composer 更新

include/vendor/alibabacloud/credentials/src/Credential/CredentialModel.php

@@ -0,0 +1,125 @@
+<?php
+
+// This file is auto-generated, don't edit it. Thanks.
+namespace AlibabaCloud\Credentials\Credential;
+
+use AlibabaCloud\Tea\Model;
+
+class CredentialModel extends Model
+{
+    public function validate()
+    {
+    }
+    public function toMap()
+    {
+        $res = [];
+        if (null !== $this->accessKeyId) {
+            $res['accessKeyId'] = $this->accessKeyId;
+        }
+        if (null !== $this->accessKeySecret) {
+            $res['accessKeySecret'] = $this->accessKeySecret;
+        }
+        if (null !== $this->securityToken) {
+            $res['securityToken'] = $this->securityToken;
+        }
+        if (null !== $this->bearerToken) {
+            $res['bearerToken'] = $this->bearerToken;
+        }
+        if (null !== $this->type) {
+            $res['type'] = $this->type;
+        }
+        return $res;
+    }
+    /**
+     * @param array $map
+     * @return CredentialModel
+     */
+    public static function fromMap($map = [])
+    {
+        $model = new self();
+        if (isset($map['accessKeyId'])) {
+            $model->accessKeyId = $map['accessKeyId'];
+        }
+        if (isset($map['accessKeySecret'])) {
+            $model->accessKeySecret = $map['accessKeySecret'];
+        }
+        if (isset($map['securityToken'])) {
+            $model->securityToken = $map['securityToken'];
+        }
+        if (isset($map['bearerToken'])) {
+            $model->bearerToken = $map['bearerToken'];
+        }
+        if (isset($map['type'])) {
+            $model->type = $map['type'];
+        }
+        return $model;
+    }
+    /**
+     * @description accesskey id
+     * @var string
+     */
+    public $accessKeyId;
+
+    /**
+     * @description accesskey secret
+     * @var string
+     */
+    public $accessKeySecret;
+
+    /**
+     * @description security token
+     * @var string
+     */
+    public $securityToken;
+
+    /**
+     * @description bearer token
+     * @var string
+     */
+    public $bearerToken;
+
+    /**
+     * @description type
+     * @example access_key
+     * @var string
+     */
+    public $type;
+
+    /**
+     * @return string
+     */
+    public function getAccessKeyId()
+    {
+        return $this->accessKeyId;
+    }
+
+    /**
+     * @return string
+     */
+    public function getAccessKeySecret()
+    {
+        return $this->accessKeySecret;
+    }
+
+    /**
+     * @return string
+     */
+    public function getSecurityToken()
+    {
+        return $this->securityToken;
+    }
+
+    /**
+     * @return string
+     */
+    public function getBearerToken()
+    {
+        return $this->bearerToken;
+    }
+
+    public function getType()
+    {
+        return $this->type;
+    }
+
+}

include/vendor/alibabacloud/credentials/src/CredentialsProviderWrap.php

@@ -0,0 +1,75 @@
+<?php
+
+namespace AlibabaCloud\Credentials;
+
+use AlibabaCloud\Credentials\Credential\CredentialModel;
+use AlibabaCloud\Credentials\Providers\CredentialsProvider;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class CredentialsProviderWrap
+ * 
+ * @package AlibabaCloud\Credentials
+ */
+class CredentialsProviderWrap implements CredentialsInterface
+{
+    /**
+     * @var string
+     */
+    private $typeName;
+
+    /**
+     * @var CredentialsProvider
+     */
+    private $credentialsProvider;
+
+    /**
+     * CLIProfileCredentialsProvider constructor.
+     *
+     * @param string $typeName
+     * @param CredentialsProvider $credentialsProvider
+     */
+    public function __construct($typeName, $credentialsProvider)
+    {
+        $this->typeName = $typeName;
+        $this->credentialsProvider = $credentialsProvider;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getCredential()
+    {
+        $credentials = $this->credentialsProvider->getCredentials();
+        return new CredentialModel([
+            'accessKeyId' => $credentials->getAccessKeyId(),
+            'accessKeySecret' => $credentials->getAccessKeySecret(),
+            'securityToken' => $credentials->getSecurityToken(),
+            'type' => $this->typeName,
+        ]);
+    }
+
+    /**
+     * @param string $name
+     * @param array  $arguments
+     *
+     * @return mixed
+     */
+    public function __call($name, $arguments)
+    {
+        return $this->credentialsProvider->$name($arguments);
+    }
+
+    public function __toString()
+    {
+        return "credentialsProviderWrap#$this->typeName";
+    }
+
+    /**
+     * @return ShaHmac1Signature
+     */
+    public function getSignature()
+    {
+        return null;
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/CLIProfileCredentialsProvider.php

@@ -0,0 +1,179 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\Utils\Helper;
+use RuntimeException;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class CLIProfileCredentialsProvider
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class CLIProfileCredentialsProvider implements CredentialsProvider
+{
+
+    /**
+     * @var string
+     */
+    private $profileName;
+
+    /**
+     * @var CredentialsProvider
+     */
+    private $credentialsProvider;
+
+
+    /**
+     * CLIProfileCredentialsProvider constructor.
+     *
+     * @param array $params
+     */
+    public function __construct(array $params = [])
+    {
+        $this->filterProfileName($params);
+    }
+
+    private function filterProfileName(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_PROFILE')) {
+            $this->profileName = Helper::env('ALIBABA_CLOUD_PROFILE');
+        }
+
+        if (isset($params['profileName'])) {
+            $this->profileName = $params['profileName'];
+        }
+    }
+
+    /**
+     * @return bool
+     */
+    private function shouldReloadCredentialsProvider()
+    {
+        if (is_null($this->credentialsProvider)) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * @return CredentialsProvider
+     */
+    protected function reloadCredentialsProvider($profileFile, $profileName)
+    {
+        if (!Helper::inOpenBasedir($profileFile)) {
+            throw new RuntimeException('Unable to open credentials file: ' . $profileFile);
+        }
+
+        if (!\is_readable($profileFile) || !\is_file($profileFile)) {
+            throw new RuntimeException('Credentials file is not readable: ' . $profileFile);
+        }
+
+        $jsonContent = \file_get_contents($profileFile);
+        $fileArray = json_decode($jsonContent, true);
+
+        if (\is_array($fileArray) && !empty($fileArray)) {
+            if (is_null($profileName) || $profileName === '') {
+                $profileName = $fileArray['current'];
+            }
+            if (isset($fileArray['profiles'])) {
+                foreach ($fileArray['profiles'] as $profile) {
+                    if (Helper::unsetReturnNull($profile, 'name') === $profileName) {
+                        switch (Helper::unsetReturnNull($profile, 'mode')) {
+                            case 'AK':
+                                return new StaticAKCredentialsProvider([
+                                    'accessKeyId' => Helper::unsetReturnNull($profile, 'access_key_id'),
+                                    'accessKeySecret' => Helper::unsetReturnNull($profile, 'access_key_secret'),
+                                ]);
+                            case 'RamRoleArn':
+                                $innerProvider = new StaticAKCredentialsProvider([
+                                    'accessKeyId' => Helper::unsetReturnNull($profile, 'access_key_id'),
+                                    'accessKeySecret' => Helper::unsetReturnNull($profile, 'access_key_secret'),
+                                ]);
+                                return new RamRoleArnCredentialsProvider([
+                                    'credentialsProvider' => $innerProvider,
+                                    'roleArn' => Helper::unsetReturnNull($profile, 'ram_role_arn'),
+                                    'roleSessionName' => Helper::unsetReturnNull($profile, 'ram_session_name'),
+                                    'durationSeconds' => Helper::unsetReturnNull($profile, 'expired_seconds'),
+                                    'stsRegionId' => Helper::unsetReturnNull($profile, 'sts_region'),
+                                ]);
+                            case 'EcsRamRole':
+                                return new EcsRamRoleCredentialsProvider([
+                                    'roleName' => Helper::unsetReturnNull($profile, 'ram_role_name'),
+                                ]);
+                            case 'OIDC':
+                                return new OIDCRoleArnCredentialsProvider([
+                                    'roleArn' => Helper::unsetReturnNull($profile, 'ram_role_arn'),
+                                    'oidcProviderArn' => Helper::unsetReturnNull($profile, 'oidc_provider_arn'),
+                                    'oidcTokenFilePath' => Helper::unsetReturnNull($profile, 'oidc_token_file'),
+                                    'roleSessionName' => Helper::unsetReturnNull($profile, 'ram_session_name'),
+                                    'durationSeconds' => Helper::unsetReturnNull($profile, 'expired_seconds'),
+                                    'stsRegionId' => Helper::unsetReturnNull($profile, 'sts_region'),
+                                ]);
+                            case 'ChainableRamRoleArn':
+                                $previousProvider = $this->reloadCredentialsProvider($profileFile, Helper::unsetReturnNull($profile, 'source_profile'));
+                                return new RamRoleArnCredentialsProvider([
+                                    'credentialsProvider' => $previousProvider,
+                                    'roleArn' => Helper::unsetReturnNull($profile, 'ram_role_arn'),
+                                    'roleSessionName' => Helper::unsetReturnNull($profile, 'ram_session_name'),
+                                    'durationSeconds' => Helper::unsetReturnNull($profile, 'expired_seconds'),
+                                    'stsRegionId' => Helper::unsetReturnNull($profile, 'sts_region'),
+                                ]);
+                            default:
+                                throw new RuntimeException('Unsupported credential mode from CLI credentials file: ' . Helper::unsetReturnNull($profile, 'mode'));
+                        }
+                    }
+                }
+            }
+        }
+        throw new RuntimeException('Failed to get credential from CLI credentials file: ' . $profileFile);
+    }
+    /**
+     * Get credential.
+     *
+     * @return Credentials
+     * @throws RuntimeException
+     */
+    public function getCredentials()
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_CLI_PROFILE_DISABLED') && Helper::env('ALIBABA_CLOUD_CLI_PROFILE_DISABLED') === true) {
+            throw new RuntimeException('CLI credentials file is disabled');
+        }
+        $cliProfileFile = self::getDefaultFile();
+        if ($this->shouldReloadCredentialsProvider()) {
+            $this->credentialsProvider = $this->reloadCredentialsProvider($cliProfileFile, $this->profileName);
+        }
+
+        $credentials = $this->credentialsProvider->getCredentials();
+        return new Credentials([
+            'accessKeyId' => $credentials->getAccessKeyId(),
+            'accessKeySecret' => $credentials->getAccessKeySecret(),
+            'securityToken' => $credentials->getSecurityToken(),
+            'providerName' => $this->getProviderName() . '/' . $this->credentialsProvider->getProviderName(),
+        ]);
+    }
+
+    /**
+     * Get the default credential file.
+     *
+     * @return string
+     */
+    private function getDefaultFile()
+    {
+        return Helper::getHomeDirectory() .
+            DIRECTORY_SEPARATOR .
+            '.aliyun' .
+            DIRECTORY_SEPARATOR .
+            'config.json';
+    }
+
+    /**
+     * @return string
+     */
+    public function getProviderName()
+    {
+        return 'cli_profile';
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/Credentials.php

@@ -0,0 +1,87 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class Credentials
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class Credentials
+{
+
+    /**
+     * @var string
+     */
+    private $accessKeyId;
+
+    /**
+     * @var string
+     */
+    private $accessKeySecret;
+
+    /**
+     * @var string
+     */
+    private $securityToken;
+
+    /**
+     * @var int
+     */
+    private $expiration;
+
+    /**
+     * @var int
+     */
+    private $providerName;
+
+    public function __construct($config = [])
+    {
+        if (!empty($config)) {
+            foreach ($config as $k => $v) {
+                $this->{$k} = $v;
+            }
+        }
+    }
+
+    /**
+     * @return string
+     */
+    public function getAccessKeyId()
+    {
+        return $this->accessKeyId;
+    }
+
+    /**
+     * @return string
+     */
+    public function getAccessKeySecret()
+    {
+        return $this->accessKeySecret;
+    }
+
+    /**
+     * @return string
+     */
+    public function getSecurityToken()
+    {
+        return $this->securityToken;
+    }
+
+    /**
+     * @return int
+     */
+    public function getExpiration()
+    {
+        return $this->expiration;
+    }
+
+    /**
+     * @return string
+     */
+    public function getProviderName()
+    {
+        return $this->providerName;
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/CredentialsProvider.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Interface CredentialsInterface
+ *
+ * @codeCoverageIgnore
+ */
+interface CredentialsProvider
+{
+
+    /**
+     * @return Credentials
+     */
+    public function getCredentials();
+
+    /**
+     * @return string
+     */
+    public function getProviderName();
+}

include/vendor/alibabacloud/credentials/src/Providers/DefaultCredentialsProvider.php

@@ -0,0 +1,177 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\Utils\Filter;
+use AlibabaCloud\Credentials\Utils\Helper;
+use InvalidArgumentException;
+use RuntimeException;
+use Exception;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class DefaultCredentialsProvider
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class DefaultCredentialsProvider implements CredentialsProvider
+{
+
+    /**
+     * @var array
+     */
+    private static $defaultProviders = [];
+
+    /**
+     * @var bool
+     */
+    private $reuseLastProviderEnabled;
+
+    /**
+     * @var CredentialsProvider
+     */
+    private $lastUsedCredentialsProvider;
+
+    /**
+     * @var array
+     */
+    private static $customChain = [];
+
+    /**
+     * DefaultCredentialsProvider constructor.
+     * @param array $params
+     */
+    public function __construct(array $params = [])
+    {
+        $this->filterReuseLastProviderEnabled($params);
+        $this->createDefaultChain();
+        Filter::reuseLastProviderEnabled($this->reuseLastProviderEnabled);
+    }
+
+    private function filterReuseLastProviderEnabled(array $params)
+    {
+        $this->reuseLastProviderEnabled = true;
+        if (isset($params['reuseLastProviderEnabled'])) {
+            $this->reuseLastProviderEnabled = $params['reuseLastProviderEnabled'];
+        }
+    }
+
+    private function createDefaultChain()
+    {
+        self::$defaultProviders = [
+            new EnvironmentVariableCredentialsProvider(),
+        ];
+        if (
+            Helper::envNotEmpty('ALIBABA_CLOUD_ROLE_ARN')
+            && Helper::envNotEmpty('ALIBABA_CLOUD_OIDC_PROVIDER_ARN')
+            && Helper::envNotEmpty('ALIBABA_CLOUD_OIDC_TOKEN_FILE')
+        ) {
+            array_push(
+                self::$defaultProviders,
+                new OIDCRoleArnCredentialsProvider()
+            );
+        }
+        array_push(
+            self::$defaultProviders,
+            new CLIProfileCredentialsProvider()
+        );
+        array_push(
+            self::$defaultProviders,
+            new ProfileCredentialsProvider()
+        );
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ECS_METADATA')) {
+            array_push(
+                self::$defaultProviders,
+                new EcsRamRoleCredentialsProvider()
+            );
+        }
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_CREDENTIALS_URI')) {
+            array_push(
+                self::$defaultProviders,
+                new URLCredentialsProvider()
+            );
+        }
+    }
+
+    /**
+     * @param CredentialsProvider ...$providers
+     */
+    public static function set(...$providers)
+    {
+        if (empty($providers)) {
+            throw new InvalidArgumentException('No providers in chain');
+        }
+
+        foreach ($providers as $provider) {
+            if (!$provider instanceof CredentialsProvider) {
+                throw new InvalidArgumentException('Providers must all be CredentialsProvider');
+            }
+        }
+
+        self::$customChain = $providers;
+    }
+
+    /**
+     * @return bool
+     */
+    public static function hasCustomChain()
+    {
+        return (bool) self::$customChain;
+    }
+
+    public static function flush()
+    {
+        self::$customChain = [];
+    }
+
+    /**
+     * Get credential.
+     *
+     * @return Credentials
+     * @throws RuntimeException
+     */
+    public function getCredentials()
+    {
+        if ($this->reuseLastProviderEnabled && !is_null($this->lastUsedCredentialsProvider)) {
+            $credentials = $this->lastUsedCredentialsProvider->getCredentials();
+            return new Credentials([
+                'accessKeyId' => $credentials->getAccessKeyId(),
+                'accessKeySecret' => $credentials->getAccessKeySecret(),
+                'securityToken' => $credentials->getSecurityToken(),
+                'providerName' => $this->getProviderName() . '/' . $this->lastUsedCredentialsProvider->getProviderName(),
+            ]);
+        }
+
+        $providerChain = array_merge(
+            self::$customChain,
+            self::$defaultProviders
+        );
+
+        $exceptionMessages = [];
+
+        foreach ($providerChain as $provider) {
+            try {
+                $credentials = $provider->getCredentials();
+                $this->lastUsedCredentialsProvider = $provider;
+                return new Credentials([
+                    'accessKeyId' => $credentials->getAccessKeyId(),
+                    'accessKeySecret' => $credentials->getAccessKeySecret(),
+                    'securityToken' => $credentials->getSecurityToken(),
+                    'providerName' => $this->getProviderName() . '/' . $provider->getProviderName(),
+                ]);
+            } catch (Exception $exception) {
+                array_push($exceptionMessages, basename(str_replace('\\', '/', get_class($provider))) . ': ' . $exception->getMessage());
+            }
+        }
+        throw new RuntimeException('Unable to load credentials from any of the providers in the chain: ' . implode(', ', $exceptionMessages));
+
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getProviderName()
+    {
+        return "default";
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/EcsRamRoleCredentialsProvider.php

@@ -0,0 +1,256 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\Utils\Helper;
+use AlibabaCloud\Credentials\Utils\Filter;
+use AlibabaCloud\Credentials\Request\Request;
+use GuzzleHttp\Exception\GuzzleException;
+use InvalidArgumentException;
+use RuntimeException;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class EcsRamRoleCredentialsProvider
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class EcsRamRoleCredentialsProvider extends SessionCredentialsProvider
+{
+
+    /**
+     * @var string
+     */
+    private $metadataHost = 'http://100.100.100.200';
+
+    /**
+     * @var string
+     */
+    private $ecsUri = '/latest/meta-data/ram/security-credentials/';
+
+    /**
+     * @var string
+     */
+    private $metadataTokenUri = '/latest/api/token';
+
+    /**
+     * @var string
+     */
+    private $roleName;
+
+    /**
+     * @var boolean
+     */
+    private $disableIMDSv1 = false;
+
+    /**
+     * @var int
+     */
+    private $metadataTokenDuration = 21600;
+
+    /**
+     * @var int
+     */
+    private $connectTimeout = 5;
+
+    /**
+     * @var int
+     */
+    private $readTimeout = 5;
+
+
+    /**
+     * EcsRamRoleCredentialsProvider constructor.
+     *
+     * @param array $params
+     * @param array $options
+     */
+    public function __construct(array $params = [], array $options = [])
+    {
+        $this->filterOptions($options);
+        $this->filterRoleName($params);
+        $this->filterDisableECSIMDSv1($params);
+        Filter::roleName($this->roleName);
+        Filter::disableIMDSv1($this->disableIMDSv1);
+    }
+
+    private function filterOptions(array $options)
+    {
+        if (isset($options['connectTimeout'])) {
+            $this->connectTimeout = $options['connectTimeout'];
+        }
+
+        if (isset($options['readTimeout'])) {
+            $this->readTimeout = $options['readTimeout'];
+        }
+
+        Filter::timeout($this->connectTimeout, $this->readTimeout);
+    }
+
+    private function filterRoleName(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ECS_METADATA')) {
+            $this->roleName = Helper::env('ALIBABA_CLOUD_ECS_METADATA');
+        }
+
+        if (isset($params['roleName'])) {
+            $this->roleName = $params['roleName'];
+        }
+
+        if (is_null($this->roleName) || $this->roleName === '') {
+            $this->roleName = $this->getRoleNameFromMeta();
+        }
+    }
+
+    private function filterDisableECSIMDSv1($params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_IMDSV1_DISABLED')) {
+            $this->disableIMDSv1 = Helper::env('ALIBABA_CLOUD_IMDSV1_DISABLED') === true ? true : false;
+        }
+
+        if (isset($params['disableIMDSv1'])) {
+            $this->disableIMDSv1 = $params['disableIMDSv1'];
+        }
+    }
+
+    /**
+     * Get credentials by request.
+     *
+     * @return array
+     * @throws InvalidArgumentException
+     * @throws RuntimeException
+     * @throws GuzzleException
+     */
+    public function refreshCredentials()
+    {
+        $url = $this->metadataHost . $this->ecsUri . $this->roleName;
+        $options = Request::commonOptions();
+        $options['read_timeout'] = $this->readTimeout;
+        $options['connect_timeout'] = $this->connectTimeout;
+
+        $metadataToken = $this->getMetadataToken();
+        if (!is_null($metadataToken)) {
+            $options['headers']['X-aliyun-ecs-metadata-token'] = $metadataToken;
+        }
+
+        $result = Request::createClient()->request('GET', $url, $options);
+
+        if ($result->getStatusCode() === 404) {
+            throw new InvalidArgumentException('The role was not found in the instance' . (string) $result);
+        }
+
+        if ($result->getStatusCode() !== 200) {
+            throw new RuntimeException('Error refreshing credentials from IMDS, statusCode: ' . $result->getStatusCode() . ', result: ' . (string) $result);
+        }
+
+        $credentials = $result->toArray();
+
+        if (!isset($credentials['AccessKeyId']) || !isset($credentials['AccessKeySecret']) || !isset($credentials['SecurityToken'])) {
+            throw new RuntimeException('Error retrieving credentials from IMDS result:' . $result->toJson());
+        }
+
+        if (!isset($credentials['Code']) || $credentials['Code'] !== 'Success') {
+            throw new RuntimeException('Error retrieving credentials from IMDS result, Code is not Success:' . $result->toJson());
+        }
+
+        return $credentials;
+    }
+
+    /**
+     * @return string
+     * @throws InvalidArgumentException
+     * @throws RuntimeException
+     * @throws GuzzleException
+     */
+    private function getRoleNameFromMeta()
+    {
+        $options = Request::commonOptions();
+        $options['read_timeout'] = $this->readTimeout;
+        $options['connect_timeout'] = $this->connectTimeout;
+
+        $metadataToken = $this->getMetadataToken();
+        if (!is_null($metadataToken)) {
+            $options['headers']['X-aliyun-ecs-metadata-token'] = $metadataToken;
+        }
+
+        $result = Request::createClient()->request(
+            'GET',
+            'http://100.100.100.200/latest/meta-data/ram/security-credentials/',
+            $options
+        );
+
+        if ($result->getStatusCode() === 404) {
+            throw new InvalidArgumentException('The role name was not found in the instance' . (string) $result);
+        }
+
+        if ($result->getStatusCode() !== 200) {
+            throw new RuntimeException('Error retrieving role name from result: ' . (string) $result);
+        }
+
+        $role_name = (string) $result;
+        if (!$role_name) {
+            throw new RuntimeException('Error retrieving role name from result is empty');
+        }
+
+        return $role_name;
+    }
+
+    /**
+     * Get metadata token by request.
+     *
+     * @return string
+     * @throws RuntimeException
+     * @throws GuzzleException
+     */
+    private function getMetadataToken()
+    {
+        $url = $this->metadataHost . $this->metadataTokenUri;
+        $options = Request::commonOptions();
+        $options['read_timeout'] = $this->readTimeout;
+        $options['connect_timeout'] = $this->connectTimeout;
+        $options['headers']['X-aliyun-ecs-metadata-token-ttl-seconds'] = $this->metadataTokenDuration;
+
+        $result = Request::createClient()->request('PUT', $url, $options);
+
+        if ($result->getStatusCode() != 200) {
+            if ($this->disableIMDSv1) {
+                throw new RuntimeException('Failed to get token from ECS Metadata Service. HttpCode= ' . $result->getStatusCode());
+            }
+            return null;
+        }
+        return (string) $result;
+    }
+
+
+    /**
+     * @return string
+     */
+    public function key()
+    {
+        return 'ecs_ram_role#roleName#' . $this->roleName;
+    }
+
+    /**
+     * @return string
+     */
+    public function getProviderName()
+    {
+        return 'ecs_ram_role';
+    }
+
+    /**
+     * @return string
+     */
+    public function getRoleName()
+    {
+        return $this->roleName;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isDisableIMDSv1()
+    {
+        return $this->disableIMDSv1;
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/EnvironmentVariableCredentialsProvider.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\Utils\Helper;
+use InvalidArgumentException;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class EnvironmentVariableCredentialsProvider
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class EnvironmentVariableCredentialsProvider implements CredentialsProvider
+{
+    /**
+     * EnvironmentVariableCredentialsProvider constructor.
+     */
+    public function __construct()
+    {
+    }
+
+    /**
+     * Get credential.
+     *
+     * @return Credentials
+     * @throws InvalidArgumentException
+     */
+    public function getCredentials()
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_ID')) {
+            $accessKeyId = Helper::env('ALIBABA_CLOUD_ACCESS_KEY_ID');
+        } else {
+            throw new InvalidArgumentException('Access key ID must be specified via environment variable (ALIBABA_CLOUD_ACCESS_KEY_ID)');
+        }
+
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_SECRET')) {
+            $accessKeySecret = Helper::env('ALIBABA_CLOUD_ACCESS_KEY_SECRET');
+        } else {
+            throw new InvalidArgumentException('Access key Secret must be specified via environment variable (ALIBABA_CLOUD_ACCESS_KEY_SECRET)');
+        }
+
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_SECURITY_TOKEN')) {
+            $securityToken = Helper::env('ALIBABA_CLOUD_SECURITY_TOKEN');
+        }
+        return new Credentials([
+            'accessKeyId' => $accessKeyId,
+            'accessKeySecret' => $accessKeySecret,
+            'securityToken' => $securityToken,
+            'providerName' => $this->getProviderName(),
+        ]);
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getProviderName()
+    {
+        return "env";
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/OIDCRoleArnCredentialsProvider.php

@@ -0,0 +1,257 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\Utils\Helper;
+use AlibabaCloud\Credentials\Utils\Filter;
+use AlibabaCloud\Credentials\Request\Request;
+use GuzzleHttp\Psr7\Uri;
+use GuzzleHttp\Exception\GuzzleException;
+use InvalidArgumentException;
+use RuntimeException;
+use Exception;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class OIDCRoleArnCredentialsProvider
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class OIDCRoleArnCredentialsProvider extends SessionCredentialsProvider
+{
+
+    /**
+     * @var string
+     */
+    private $roleArn;
+
+    /**
+     * @var string
+     */
+    private $oidcProviderArn;
+
+    /**
+     * @var string
+     */
+    private $oidcTokenFilePath;
+
+    /**
+     * @var string
+     */
+    private $roleSessionName;
+
+    /**
+     * @description role session expiration
+     * @example 3600
+     * @var int
+     */
+    private $durationSeconds = 3600;
+
+    /**
+     * @var string
+     */
+    private $policy;
+
+    /**
+     * @var string
+     */
+    private $stsEndpoint;
+
+    /**
+     * @var int
+     */
+    private $connectTimeout = 5;
+
+    /**
+     * @var int
+     */
+    private $readTimeout = 5;
+
+    /**
+     * OIDCRoleArnCredentialsProvider constructor.
+     *
+     * @param array $params
+     * @param array $options
+     */
+    public function __construct(array $params = [], array $options = [])
+    {
+        $this->filterOptions($options);
+        $this->filterRoleArn($params);
+        $this->filterOIDCProviderArn($params);
+        $this->filterOIDCTokenFilePath($params);
+        $this->filterRoleSessionName($params);
+        $this->filterDurationSeconds($params);
+        $this->filterPolicy($params);
+        $this->filterSTSEndpoint($params);
+    }
+
+    private function filterRoleArn(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ROLE_ARN')) {
+            $this->roleArn = Helper::env('ALIBABA_CLOUD_ROLE_ARN');
+        }
+
+        if (isset($params['roleArn'])) {
+            $this->roleArn = $params['roleArn'];
+        }
+
+        Filter::roleArn($this->roleArn);
+    }
+
+    private function filterOIDCProviderArn(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_OIDC_PROVIDER_ARN')) {
+            $this->oidcProviderArn = Helper::env('ALIBABA_CLOUD_OIDC_PROVIDER_ARN');
+        }
+
+        if (isset($params['oidcProviderArn'])) {
+            $this->oidcProviderArn = $params['oidcProviderArn'];
+        }
+
+        Filter::oidcProviderArn($this->oidcProviderArn);
+    }
+
+    private function filterOIDCTokenFilePath(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_OIDC_TOKEN_FILE')) {
+            $this->oidcTokenFilePath = Helper::env('ALIBABA_CLOUD_OIDC_TOKEN_FILE');
+        }
+
+        if (isset($params['oidcTokenFilePath'])) {
+            $this->oidcTokenFilePath = $params['oidcTokenFilePath'];
+        }
+
+        Filter::oidcTokenFilePath($this->oidcTokenFilePath);
+    }
+
+    private function filterRoleSessionName(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ROLE_SESSION_NAME')) {
+            $this->roleSessionName = Helper::env('ALIBABA_CLOUD_ROLE_SESSION_NAME');
+        }
+
+        if (isset($params['roleSessionName'])) {
+            $this->roleSessionName = $params['roleSessionName'];
+        }
+
+        if (is_null($this->roleSessionName) || $this->roleSessionName === '') {
+            $this->roleSessionName = 'phpSdkRoleSessionName';
+        }
+    }
+
+    private function filterDurationSeconds(array $params)
+    {
+        if (isset($params['durationSeconds'])) {
+            if (is_int($params['durationSeconds'])) {
+                $this->durationSeconds = $params['durationSeconds'];
+            }
+        }
+        if ($this->durationSeconds < 900) {
+            throw new InvalidArgumentException('Role session expiration should be in the range of 900s - max session duration');
+        }
+    }
+
+    private function filterPolicy(array $params)
+    {
+        if (isset($params['policy'])) {
+            if (is_string($params['policy'])) {
+                $this->policy = $params['policy'];
+            }
+
+            if (is_array($params['policy'])) {
+                $this->policy = json_encode($params['policy']);
+            }
+        }
+    }
+
+    private function filterSTSEndpoint(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_STS_REGION')) {
+            $this->stsEndpoint = 'sts' . Helper::env('ALIBABA_CLOUD_STS_REGION') . '.aliyuncs.com';
+        }
+
+        if (isset($params['stsRegionId'])) {
+            $this->stsEndpoint = 'sts' . $params['stsRegionId'] . '.aliyuncs.com';
+        }
+
+        if (isset($params['stsEndpoint'])) {
+            $this->stsEndpoint = $params['stsEndpoint'];
+        }
+
+        if (is_null($this->stsEndpoint) || $this->stsEndpoint === '') {
+            $this->stsEndpoint = 'sts.aliyuncs.com';
+        }
+    }
+
+    private function filterOptions(array $options)
+    {
+        if (isset($options['connectTimeout'])) {
+            $this->connectTimeout = $options['connectTimeout'];
+        }
+
+        if (isset($options['readTimeout'])) {
+            $this->readTimeout = $options['readTimeout'];
+        }
+
+        Filter::timeout($this->connectTimeout, $this->readTimeout);
+    }
+
+    /**
+     * Get credentials by request.
+     *
+     * @return array
+     * @throws RuntimeException
+     * @throws GuzzleException
+     */
+    public function refreshCredentials()
+    {
+        $options = Request::commonOptions();
+        $options['read_timeout'] = $this->readTimeout;
+        $options['connect_timeout'] = $this->connectTimeout;
+
+        $options['query']['Action'] = 'AssumeRoleWithOIDC';
+        $options['query']['Version'] = '2015-04-01';
+        $options['query']['Format'] = 'JSON';
+        $options['query']['Timestamp'] = gmdate('Y-m-d\TH:i:s\Z');
+        $options['query']['RoleArn'] = $this->roleArn;
+        $options['query']['OIDCProviderArn'] = $this->oidcProviderArn;
+        try {
+            $oidcToken = file_get_contents($this->oidcTokenFilePath);
+            $options['query']['OIDCToken'] = $oidcToken;
+        } catch (Exception $exception) {
+            throw new InvalidArgumentException($exception->getMessage());
+        }
+        $options['query']['RoleSessionName'] = $this->roleSessionName;
+        $options['query']['DurationSeconds'] = (string) $this->durationSeconds;
+        if (!is_null($this->policy)) {
+            $options['query']['Policy'] = $this->policy;
+        }
+
+        $url = (new Uri())->withScheme('https')->withHost($this->stsEndpoint);
+
+        $result = Request::createClient()->request('POST', $url, $options);
+
+        if ($result->getStatusCode() !== 200) {
+            throw new RuntimeException('Error refreshing credentials from OIDC, statusCode: ' . $result->getStatusCode() . ', result: ' . (string) $result);
+        }
+
+        $json = $result->toArray();
+        $credentials = $json['Credentials'];
+
+        if (!isset($credentials['AccessKeyId']) || !isset($credentials['AccessKeySecret']) || !isset($credentials['SecurityToken'])) {
+            throw new RuntimeException('Error retrieving credentials from OIDC result:' . $result->toJson());
+        }
+
+        return $credentials;
+    }
+
+    public function key()
+    {
+        return 'oidc_role_arn#roleArn#' . $this->roleArn . '#oidcProviderArn#' . $this->oidcProviderArn . '#roleSessionName#' . $this->roleSessionName;
+    }
+
+    public function getProviderName()
+    {
+        return 'oidc_role_arn';
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/ProfileCredentialsProvider.php

@@ -0,0 +1,188 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\Utils\Helper;
+use RuntimeException;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class ProfileCredentialsProvider
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class ProfileCredentialsProvider implements CredentialsProvider
+{
+
+    /**
+     * @var string
+     */
+    private $profileName;
+
+    /**
+     * @var string
+     */
+    private $profileFile;
+
+    /**
+     * @var CredentialsProvider
+     */
+    private $credentialsProvider;
+
+
+    /**
+     * ProfileCredentialsProvider constructor.
+     *
+     * @param array $params
+     */
+    public function __construct(array $params = [])
+    {
+        $this->filterProfileName($params);
+        $this->filterProfileFile();
+    }
+
+    private function filterProfileName(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_PROFILE')) {
+            $this->profileName = Helper::env('ALIBABA_CLOUD_PROFILE');
+        }
+
+        if (isset($params['profileName'])) {
+            $this->profileName = $params['profileName'];
+        }
+
+        if (is_null($this->profileName) || $this->profileName === '') {
+            $this->profileName = 'default';
+        }
+    }
+
+    private function filterProfileFile()
+    {
+        $this->profileFile = Helper::envNotEmpty('ALIBABA_CLOUD_CREDENTIALS_FILE');
+
+        if (!$this->profileFile) {
+            $this->profileFile = self::getDefaultFile();
+        }
+    }
+
+    /**
+     * @return bool
+     */
+    private function shouldReloadCredentialsProvider()
+    {
+        if (is_null($this->credentialsProvider)) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * @return CredentialsProvider
+     */
+    private function reloadCredentialsProvider($profileFile, $profileName)
+    {
+        if (!Helper::inOpenBasedir($profileFile)) {
+            throw new RuntimeException('Unable to open credentials file: ' . $profileFile);
+        }
+
+        if (!\is_readable($profileFile) || !\is_file($profileFile)) {
+            throw new RuntimeException('Credentials file is not readable: ' . $profileFile);
+        }
+
+        $fileArray = \parse_ini_file($profileFile, true);
+
+        if (\is_array($fileArray) && !empty($fileArray)) {
+            $credentialsConfigures = [];
+            foreach (\array_change_key_case($fileArray) as $name => $configures) {
+                if ($name === $profileName) {
+                    $credentialsConfigures = $configures;
+                    break;
+                }
+            }
+            if (\is_array($credentialsConfigures) && !empty($credentialsConfigures)) {
+                switch (Helper::unsetReturnNull($credentialsConfigures, 'type')) {
+                    case 'access_key':
+                        return new StaticAKCredentialsProvider([
+                            'accessKeyId' => Helper::unsetReturnNull($credentialsConfigures, 'access_key_id'),
+                            'accessKeySecret' => Helper::unsetReturnNull($credentialsConfigures, 'access_key_secret'),
+                        ]);
+                    case 'ram_role_arn':
+                        $innerProvider = new StaticAKCredentialsProvider([
+                            'accessKeyId' => Helper::unsetReturnNull($credentialsConfigures, 'access_key_id'),
+                            'accessKeySecret' => Helper::unsetReturnNull($credentialsConfigures, 'access_key_secret'),
+                        ]);
+                        return new RamRoleArnCredentialsProvider([
+                            'credentialsProvider' => $innerProvider,
+                            'roleArn' => Helper::unsetReturnNull($credentialsConfigures, 'role_arn'),
+                            'roleSessionName' => Helper::unsetReturnNull($credentialsConfigures, 'role_session_name'),
+                            'policy' => Helper::unsetReturnNull($credentialsConfigures, 'policy'),
+                        ]);
+                    case 'ecs_ram_role':
+                        return new EcsRamRoleCredentialsProvider([
+                            'roleName' => Helper::unsetReturnNull($credentialsConfigures, 'role_name'),
+                        ]);
+                    case 'oidc_role_arn':
+                        return new OIDCRoleArnCredentialsProvider([
+                            'roleArn' => Helper::unsetReturnNull($credentialsConfigures, 'role_arn'),
+                            'oidcProviderArn' => Helper::unsetReturnNull($credentialsConfigures, 'oidc_provider_arn'),
+                            'oidcTokenFilePath' => Helper::unsetReturnNull($credentialsConfigures, 'oidc_token_file_path'),
+                            'roleSessionName' => Helper::unsetReturnNull($credentialsConfigures, 'role_session_name'),
+                            'policy' => Helper::unsetReturnNull($credentialsConfigures, 'policy'),
+                        ]);
+                    case 'rsa_key_pair':
+                        return new RsaKeyPairCredentialsProvider([
+                            'publicKeyId' => Helper::unsetReturnNull($credentialsConfigures, 'public_key_id'),
+                            'privateKeyFile' => Helper::unsetReturnNull($credentialsConfigures, 'private_key_file'),
+                        ]);
+                    default:
+                        throw new RuntimeException('Unsupported credential type from credentials file: ' . Helper::unsetReturnNull($credentialsConfigures, 'type'));
+                }
+            }
+        }
+        throw new RuntimeException('Failed to get credential from credentials file: ' . $profileFile);
+    }
+    /**
+     * Get credential.
+     *
+     * @return Credentials
+     * @throws RuntimeException
+     */
+    public function getCredentials()
+    {
+        if ($this->shouldReloadCredentialsProvider()) {
+            $this->credentialsProvider = $this->reloadCredentialsProvider($this->profileFile, $this->profileName);
+        }
+
+        $credentials = $this->credentialsProvider->getCredentials();
+        return new Credentials([
+            'accessKeyId' => $credentials->getAccessKeyId(),
+            'accessKeySecret' => $credentials->getAccessKeySecret(),
+            'securityToken' => $credentials->getSecurityToken(),
+            'providerName' => $this->getProviderName() . '/' . $this->credentialsProvider->getProviderName(),
+        ]);
+
+    }
+
+    /**
+     * Get the default credential file.
+     *
+     * @return string
+     */
+    private function getDefaultFile()
+    {
+        return Helper::getHomeDirectory() .
+            DIRECTORY_SEPARATOR .
+            '.alibabacloud' .
+            DIRECTORY_SEPARATOR .
+            'credentials';
+    }
+
+    /**
+     * @return string
+     */
+    public function getProviderName()
+    {
+        return 'profile';
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/RamRoleArnCredentialsProvider.php

@@ -0,0 +1,310 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\Utils\Helper;
+use AlibabaCloud\Credentials\Utils\Filter;
+use AlibabaCloud\Credentials\Request\Request;
+use GuzzleHttp\Psr7\Uri;
+use GuzzleHttp\Exception\GuzzleException;
+use InvalidArgumentException;
+use RuntimeException;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class RamRoleArnCredentialsProvider
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class RamRoleArnCredentialsProvider extends SessionCredentialsProvider
+{
+
+    /**
+     * @var CredentialsProvider
+     */
+    private $credentialsProvider;
+
+    /**
+     * @var string
+     */
+    private $roleArn;
+
+    /**
+     * @var string
+     */
+    private $roleSessionName;
+
+    /**
+     * @description role session expiration
+     * @example 3600
+     * @var int
+     */
+    private $durationSeconds = 3600;
+
+    /**
+     * @var string
+     */
+    private $externalId;
+
+    /**
+     * @var string
+     */
+    private $policy;
+
+    /**
+     * @var string
+     */
+    private $stsEndpoint;
+
+    /**
+     * @var int
+     */
+    private $connectTimeout = 5;
+
+    /**
+     * @var int
+     */
+    private $readTimeout = 5;
+
+    /**
+     * RamRoleArnCredentialsProvider constructor.
+     *
+     * @param array $params
+     * @param array $options
+     */
+    public function __construct(array $params = [], array $options = [])
+    {
+        $this->filterOptions($options);
+        $this->filterCredentials($params);
+        $this->filterRoleArn($params);
+        $this->filterRoleSessionName($params);
+        $this->filterDurationSeconds($params);
+        $this->filterPolicy($params);
+        $this->filterExternalId($params);
+        $this->filterSTSEndpoint($params);
+    }
+
+    private function filterRoleArn(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ROLE_ARN')) {
+            $this->roleArn = Helper::env('ALIBABA_CLOUD_ROLE_ARN');
+        }
+
+        if (isset($params['roleArn'])) {
+            $this->roleArn = $params['roleArn'];
+        }
+
+        Filter::roleArn($this->roleArn);
+    }
+
+    private function filterRoleSessionName(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ROLE_SESSION_NAME')) {
+            $this->roleSessionName = Helper::env('ALIBABA_CLOUD_ROLE_SESSION_NAME');
+        }
+
+        if (isset($params['roleSessionName'])) {
+            $this->roleSessionName = $params['roleSessionName'];
+        }
+
+        if (is_null($this->roleSessionName) || $this->roleSessionName === '') {
+            $this->roleSessionName = 'phpSdkRoleSessionName';
+        }
+    }
+
+    private function filterDurationSeconds(array $params)
+    {
+        if (isset($params['durationSeconds'])) {
+            if (is_int($params['durationSeconds'])) {
+                $this->durationSeconds = $params['durationSeconds'];
+            }
+        }
+        if ($this->durationSeconds < 900) {
+            throw new InvalidArgumentException('Role session expiration should be in the range of 900s - max session duration');
+        }
+    }
+
+    private function filterPolicy(array $params)
+    {
+        if (isset($params['policy'])) {
+            if (is_string($params['policy'])) {
+                $this->policy = $params['policy'];
+            }
+
+            if (is_array($params['policy'])) {
+                $this->policy = json_encode($params['policy']);
+            }
+        }
+    }
+
+    private function filterExternalId(array $params)
+    {
+        if (isset($params['externalId'])) {
+            if (is_string($params['externalId'])) {
+                $this->externalId = $params['externalId'];
+            }
+        }
+    }
+
+    private function filterSTSEndpoint(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_STS_REGION')) {
+            $this->stsEndpoint = 'sts.' . Helper::env('ALIBABA_CLOUD_STS_REGION') . '.aliyuncs.com';
+        }
+
+        if (isset($params['stsRegionId'])) {
+            $this->stsEndpoint = 'sts.' . $params['stsRegionId'] . '.aliyuncs.com';
+        }
+
+        if (isset($params['stsEndpoint'])) {
+            $this->stsEndpoint = $params['stsEndpoint'];
+        }
+
+        if (is_null($this->stsEndpoint) || $this->stsEndpoint === '') {
+            $this->stsEndpoint = 'sts.aliyuncs.com';
+        }
+    }
+
+    private function filterCredentials(array $params)
+    {
+        if (isset($params['credentialsProvider'])) {
+            if (!($params['credentialsProvider'] instanceof CredentialsProvider)) {
+                throw new InvalidArgumentException('Invalid credentialsProvider option for ram_role_arn');
+            }
+            $this->credentialsProvider = $params['credentialsProvider'];
+        } else if (isset($params['accessKeyId']) && isset($params['accessKeySecret']) && isset($params['securityToken'])) {
+            Filter::accessKey($params['accessKeyId'], $params['accessKeySecret']);
+            Filter::securityToken($params['securityToken']);
+            $this->credentialsProvider = new StaticSTSCredentialsProvider($params);
+        } else if (isset($params['accessKeyId']) && isset($params['accessKeySecret'])) {
+            Filter::accessKey($params['accessKeyId'], $params['accessKeySecret']);
+            $this->credentialsProvider = new StaticAKCredentialsProvider($params);
+        } else {
+            throw new InvalidArgumentException('Missing required credentials option for ram_role_arn');
+        }
+    }
+
+    private function filterOptions(array $options)
+    {
+        if (isset($options['connectTimeout'])) {
+            $this->connectTimeout = $options['connectTimeout'];
+        }
+
+        if (isset($options['readTimeout'])) {
+            $this->readTimeout = $options['readTimeout'];
+        }
+
+        Filter::timeout($this->connectTimeout, $this->readTimeout);
+    }
+
+    /**
+     * Get credentials by request.
+     *
+     * @return array
+     * @throws RuntimeException
+     * @throws GuzzleException
+     */
+    public function refreshCredentials()
+    {
+        $options = Request::commonOptions();
+        $options['read_timeout'] = $this->readTimeout;
+        $options['connect_timeout'] = $this->connectTimeout;
+
+        $options['query']['Action'] = 'AssumeRole';
+        $options['query']['Version'] = '2015-04-01';
+        $options['query']['Format'] = 'JSON';
+        $options['query']['Timestamp'] = gmdate('Y-m-d\TH:i:s\Z');
+        $options['query']['SignatureMethod'] = 'HMAC-SHA1';
+        $options['query']['SignatureVersion'] = '1.0';
+        $options['query']['SignatureNonce'] = Request::uuid(json_encode($options['query']));
+        $options['query']['RoleArn'] = $this->roleArn;
+        $options['query']['RoleSessionName'] = $this->roleSessionName;
+        $options['query']['DurationSeconds'] = (string) $this->durationSeconds;
+        if (!is_null($this->policy) && $this->policy !== '') {
+            $options['query']['Policy'] = $this->policy;
+        }
+        if (!is_null($this->externalId) && $this->externalId !== '') {
+            $options['query']['ExternalId'] = $this->externalId;
+        }
+
+        $sessionCredentials = $this->credentialsProvider->getCredentials();
+        $options['query']['AccessKeyId'] = $sessionCredentials->getAccessKeyId();
+        if (!is_null($sessionCredentials->getSecurityToken())) {
+            $options['query']['SecurityToken'] = $sessionCredentials->getSecurityToken();
+        }
+        $options['query']['Signature'] = Request::shaHmac1sign(
+            Request::signString('GET', $options['query']),
+            $sessionCredentials->getAccessKeySecret() . '&'
+        );
+
+        $url = (new Uri())->withScheme('https')->withHost($this->stsEndpoint);
+
+        $result = Request::createClient()->request('GET', $url, $options);
+
+        if ($result->getStatusCode() !== 200) {
+            throw new RuntimeException('Error refreshing credentials from RamRoleArn, statusCode: ' . $result->getStatusCode() . ', result: ' . (string) $result);
+        }
+
+        $json = $result->toArray();
+        $credentials = $json['Credentials'];
+
+        if (!isset($credentials['AccessKeyId']) || !isset($credentials['AccessKeySecret']) || !isset($credentials['SecurityToken'])) {
+            throw new RuntimeException('Error retrieving credentials from RamRoleArn result:' . $result->toJson());
+        }
+
+        return $credentials;
+    }
+
+    public function key()
+    {
+        $credentials = $this->credentialsProvider->getCredentials();
+        return 'ram_role_arn#credential#' . $credentials->getAccessKeyId() . '#roleArn#' . $this->roleArn . '#roleSessionName#' . $this->roleSessionName;
+    }
+
+    public function getProviderName()
+    {
+        return 'ram_role_arn/' . $this->credentialsProvider->getProviderName();
+    }
+
+    /**
+     * @return string
+     */
+    public function getRoleArn()
+    {
+        return $this->roleArn;
+    }
+
+    /**
+     * @return string
+     */
+    public function getRoleSessionName()
+    {
+        return $this->roleSessionName;
+    }
+
+    /**
+     * @return string
+     */
+    public function getPolicy()
+    {
+        return $this->policy;
+    }
+
+    /**
+     * @deprecated
+     * @return string
+     */
+    public function getOriginalAccessKeyId()
+    {
+        return $this->credentialsProvider->getCredentials()->getAccessKeyId();
+    }
+
+    /**
+     * @deprecated
+     * @return string
+     */
+    public function getOriginalAccessKeySecret()
+    {
+        return $this->credentialsProvider->getCredentials()->getAccessKeySecret();
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/RsaKeyPairCredentialsProvider.php

@@ -0,0 +1,193 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\Utils\Helper;
+use AlibabaCloud\Credentials\Utils\Filter;
+use AlibabaCloud\Credentials\Request\Request;
+use GuzzleHttp\Psr7\Uri;
+use GuzzleHttp\Exception\GuzzleException;
+
+use InvalidArgumentException;
+use RuntimeException;
+use Exception;
+
+/**
+ * @internal This class is intended for internal use within the package.
+ * Class RsaKeyPairCredentialsProvider
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class RsaKeyPairCredentialsProvider extends SessionCredentialsProvider
+{
+
+    /**
+     * @var string
+     */
+    private $publicKeyId;
+
+    /**
+     * @var string
+     */
+    private $privateKey;
+
+    /**
+     * @description role session expiration
+     * @example 3600
+     * @var int
+     */
+    private $durationSeconds = 3600;
+
+    /**
+     * @var string
+     */
+    private $stsEndpoint;
+
+    /**
+     * @var int
+     */
+    private $connectTimeout = 5;
+
+    /**
+     * @var int
+     */
+    private $readTimeout = 5;
+
+    /**
+     * RsaKeyPairCredentialsProvider constructor.
+     *
+     * @param array $params
+     * @param array $options
+     */
+    public function __construct(array $params = [], array $options = [])
+    {
+        $this->filterOptions($options);
+        $this->filterDurationSeconds($params);
+        $this->filterSTSEndpoint($params);
+        $this->publicKeyId = isset($params['publicKeyId']) ? $params['publicKeyId'] : null;
+        $privateKeyFile = isset($params['privateKeyFile']) ? $params['privateKeyFile'] : null;
+        Filter::publicKeyId($this->publicKeyId);
+        Filter::privateKeyFile($privateKeyFile);
+
+        try {
+            $this->privateKey = file_get_contents($privateKeyFile);
+        } catch (Exception $exception) {
+            throw new InvalidArgumentException($exception->getMessage());
+        }
+    }
+
+    private function filterOptions(array $options)
+    {
+        if (isset($options['connectTimeout'])) {
+            $this->connectTimeout = $options['connectTimeout'];
+        }
+
+        if (isset($options['readTimeout'])) {
+            $this->readTimeout = $options['readTimeout'];
+        }
+
+        Filter::timeout($this->connectTimeout, $this->readTimeout);
+    }
+
+    private function filterDurationSeconds(array $params)
+    {
+        if (isset($params['durationSeconds'])) {
+            if (is_int($params['durationSeconds'])) {
+                $this->durationSeconds = $params['durationSeconds'];
+            }
+        }
+        if ($this->durationSeconds < 900) {
+            throw new InvalidArgumentException('Role session expiration should be in the range of 900s - max session duration');
+        }
+    }
+
+    private function filterSTSEndpoint(array $params)
+    {
+        if (isset($params['stsEndpoint'])) {
+            $this->stsEndpoint = $params['stsEndpoint'];
+        }
+
+        if (is_null($this->stsEndpoint) || $this->stsEndpoint === '') {
+            $this->stsEndpoint = 'sts.ap-northeast-1.aliyuncs.com';
+        }
+    }
+
+
+    /**
+     * Get credentials by request.
+     *
+     * @return array
+     * @throws RuntimeException
+     * @throws GuzzleException
+     */
+    public function refreshCredentials()
+    {
+        $options = Request::commonOptions();
+        $options['read_timeout'] = $this->readTimeout;
+        $options['connect_timeout'] = $this->connectTimeout;
+
+        $options['query']['Action'] = 'GenerateSessionAccessKey';
+        $options['query']['Version'] = '2015-04-01';
+        $options['query']['Format'] = 'JSON';
+        $options['query']['Timestamp'] = gmdate('Y-m-d\TH:i:s\Z');
+        $options['query']['SignatureMethod'] = 'SHA256withRSA';
+        $options['query']['SignatureType'] = 'PRIVATEKEY';
+        $options['query']['SignatureVersion'] = '1.0';
+        $options['query']['SignatureNonce'] = Request::uuid(json_encode($options['query']));
+        $options['query']['DurationSeconds'] = (string) $this->durationSeconds;
+        $options['query']['AccessKeyId'] = $this->publicKeyId;
+        $options['query']['Signature'] = Request::shaHmac256WithRsasign(
+            Request::signString('GET', $options['query']),
+            $this->privateKey
+        );
+
+        $url = (new Uri())->withScheme('https')->withHost($this->stsEndpoint);
+
+        $result = Request::createClient()->request('GET', $url, $options);
+
+        if ($result->getStatusCode() !== 200) {
+            throw new RuntimeException('Error refreshing credentials from RsaKeyPair, statusCode: ' . $result->getStatusCode() . ', result: ' . (string) $result);
+        }
+
+        $json = $result->toArray();
+
+        if (!isset($json['SessionAccessKey']['SessionAccessKeyId']) || !isset($json['SessionAccessKey']['SessionAccessKeySecret'])) {
+            throw new RuntimeException('Error retrieving credentials from RsaKeyPair result:' . $result->toJson());
+        }
+
+        $credentials = [];
+        $credentials['AccessKeyId'] = $json['SessionAccessKey']['SessionAccessKeyId'];
+        $credentials['AccessKeySecret'] = $json['SessionAccessKey']['SessionAccessKeySecret'];
+        $credentials['Expiration'] = $json['SessionAccessKey']['Expiration'];
+        $credentials['SecurityToken'] = null;
+
+
+        return $credentials;
+    }
+
+    public function key()
+    {
+        return 'rsa_key_pair#publicKeyId#' . $this->publicKeyId;
+    }
+
+    public function getProviderName()
+    {
+        return 'rsa_key_pair';
+    }
+
+    /**
+     * @return string
+     */
+    public function getPublicKeyId()
+    {
+        return $this->publicKeyId;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getPrivateKey()
+    {
+        return $this->privateKey;
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/SessionCredentialsProvider.php

@@ -0,0 +1,86 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+abstract class SessionCredentialsProvider implements CredentialsProvider
+{
+    /**
+     * @var array
+     */
+    protected static $credentialsCache = [];
+
+    /**
+     * Expiration time slot for temporary security credentials.
+     *
+     * @var int
+     */
+    protected $expirationSlot = 180;
+
+    /**
+     * @var string
+     */
+    protected $error = 'Result contains no credentials';
+
+    /**
+     * Get the credentials from the cache in the validity period.
+     *
+     * @return array|null
+     */
+    protected function getCredentialsInCache()
+    {
+        if (isset(self::$credentialsCache[$this->key()])) {
+            $result = self::$credentialsCache[$this->key()];
+            if (\strtotime($result['Expiration']) - \time() >= $this->expirationSlot) {
+                return $result;
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Cache credentials.
+     *
+     * @param array $credential
+     */
+    protected function cache(array $credential)
+    {
+        self::$credentialsCache[$this->key()] = $credential;
+    }
+
+    /**
+     * Get credential.
+     *
+     * @return Credentials
+     */
+    public function getCredentials()
+    {
+        $credentials = $this->getCredentialsInCache();
+
+        if ($credentials === null) {
+            $credentials = $this->refreshCredentials();
+            $this->cache($credentials);
+        }
+
+        return new Credentials([
+            'accessKeyId' => $credentials['AccessKeyId'],
+            'accessKeySecret' => $credentials['AccessKeySecret'],
+            'securityToken' => $credentials['SecurityToken'],
+            'expiration' => \strtotime($credentials['Expiration']),
+            'providerName' => $this->getProviderName(),
+        ]);
+    }
+
+
+    /**
+     * @return array
+     */
+    abstract function refreshCredentials();
+
+    /**
+     * Get the toString of the credentials provider as the key.
+     *
+     * @return string
+     */
+    abstract function key();
+}

include/vendor/alibabacloud/credentials/src/Providers/StaticAKCredentialsProvider.php

@@ -0,0 +1,78 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\Utils\Helper;
+use AlibabaCloud\Credentials\Utils\Filter;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class StaticAKCredentialsProvider
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class StaticAKCredentialsProvider implements CredentialsProvider
+{
+
+    /**
+     * @var string
+     */
+    private $accessKeyId;
+
+    /**
+     * @var string
+     */
+    private $accessKeySecret;
+
+    /**
+     * StaticAKCredentialsProvider constructor.
+     *
+     * @param array $params
+     */
+    public function __construct(array $params = [])
+    {
+        $this->filterAK($params);
+    }
+
+    private function filterAK(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_ID')) {
+            $this->accessKeyId =  Helper::env('ALIBABA_CLOUD_ACCESS_KEY_ID');
+        }
+
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_SECRET')) {
+            $this->accessKeySecret =  Helper::env('ALIBABA_CLOUD_ACCESS_KEY_SECRET');
+        }
+
+        if (isset($params['accessKeyId'])) {
+            $this->accessKeyId = $params['accessKeyId'];
+        }
+        if (isset($params['accessKeySecret'])) {
+            $this->accessKeySecret = $params['accessKeySecret'];
+        }
+
+        Filter::accessKey($this->accessKeyId, $this->accessKeySecret);
+    }
+
+    /**
+     * Get credential.
+     *
+     * @return Credentials
+     */
+    public function getCredentials()
+    {
+        return new Credentials([
+            'accessKeyId' => $this->accessKeyId,
+            'accessKeySecret' => $this->accessKeySecret,
+            'providerName' => $this->getProviderName(),
+        ]);
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getProviderName()
+    {
+        return "static_ak";
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/StaticSTSCredentialsProvider.php

@@ -0,0 +1,92 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\Utils\Helper;
+use AlibabaCloud\Credentials\Utils\Filter;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class StaticSTSCredentialsProvider
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class StaticSTSCredentialsProvider implements CredentialsProvider
+{
+
+    /**
+     * @var string
+     */
+    private $accessKeyId;
+
+    /**
+     * @var string
+     */
+    private $accessKeySecret;
+
+    /**
+     * @var string
+     */
+    private $securityToken;
+
+    /**
+     * StaticSTSCredentialsProvider constructor.
+     *
+     * @param array $params
+     */
+    public function __construct(array $params = [])
+    {
+        $this->filterSTS($params);
+    }
+
+    private function filterSTS(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_ID')) {
+            $this->accessKeyId = Helper::env('ALIBABA_CLOUD_ACCESS_KEY_ID');
+        }
+
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_ACCESS_KEY_SECRET')) {
+            $this->accessKeySecret = Helper::env('ALIBABA_CLOUD_ACCESS_KEY_SECRET');
+        }
+
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_SECURITY_TOKEN')) {
+            $this->securityToken = Helper::env('ALIBABA_CLOUD_SECURITY_TOKEN');
+        }
+
+        if (isset($params['accessKeyId'])) {
+            $this->accessKeyId = $params['accessKeyId'];
+        }
+        if (isset($params['accessKeySecret'])) {
+            $this->accessKeySecret = $params['accessKeySecret'];
+        }
+        if (isset($params['securityToken'])) {
+            $this->securityToken = $params['securityToken'];
+        }
+
+        Filter::accessKey($this->accessKeyId, $this->accessKeySecret);
+        Filter::securityToken($this->securityToken);
+    }
+
+    /**
+     * Get credential.
+     *
+     * @return Credentials
+     */
+    public function getCredentials()
+    {
+        return new Credentials([
+            'accessKeyId' => $this->accessKeyId,
+            'accessKeySecret' => $this->accessKeySecret,
+            'securityToken' => $this->securityToken,
+            'providerName' => $this->getProviderName(),
+        ]);
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getProviderName()
+    {
+        return "static_sts";
+    }
+}

include/vendor/alibabacloud/credentials/src/Providers/URLCredentialsProvider.php

@@ -0,0 +1,119 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Providers;
+
+use AlibabaCloud\Credentials\Utils\Helper;
+use AlibabaCloud\Credentials\Utils\Filter;
+use AlibabaCloud\Credentials\Request\Request;
+use GuzzleHttp\Exception\GuzzleException;
+use InvalidArgumentException;
+use RuntimeException;
+
+/**
+ * @internal This class is intended for internal use within the package. 
+ * Class URLCredentialsProvider
+ *
+ * @package AlibabaCloud\Credentials\Providers
+ */
+class URLCredentialsProvider extends SessionCredentialsProvider
+{
+
+    /**
+     * @var string
+     */
+    private $credentialsURI;
+
+    /**
+     * @var int
+     */
+    private $connectTimeout = 5;
+
+    /**
+     * @var int
+     */
+    private $readTimeout = 5;
+
+    /**
+     * URLCredentialsProvider constructor.
+     *
+     * @param array $params
+     * @param array $options
+     */
+    public function __construct(array $params = [], array $options = [])
+    {
+        $this->filterOptions($options);
+        $this->filterCredentialsURI($params);
+    }
+
+    private function filterOptions(array $options)
+    {
+        if (isset($options['connectTimeout'])) {
+            $this->connectTimeout = $options['connectTimeout'];
+        }
+
+        if (isset($options['readTimeout'])) {
+            $this->readTimeout = $options['readTimeout'];
+        }
+
+        Filter::timeout($this->connectTimeout, $this->readTimeout);
+    }
+
+    private function filterCredentialsURI(array $params)
+    {
+        if (Helper::envNotEmpty('ALIBABA_CLOUD_CREDENTIALS_URI')) {
+            $this->credentialsURI = Helper::env('ALIBABA_CLOUD_CREDENTIALS_URI');
+        }
+
+        if (isset($params['credentialsURI'])) {
+            $this->credentialsURI = $params['credentialsURI'];
+        }
+
+        Filter::credentialsURI($this->credentialsURI);
+    }
+
+    /**
+     * Get credentials by request.
+     *
+     * @return array
+     * @throws InvalidArgumentException
+     * @throws RuntimeException
+     * @throws GuzzleException
+     */
+    public function refreshCredentials()
+    {
+        $options = Request::commonOptions();
+        $options['read_timeout'] = $this->readTimeout;
+        $options['connect_timeout'] = $this->connectTimeout;
+
+        $result = Request::createClient()->request('GET', $this->credentialsURI, $options);
+
+        if ($result->getStatusCode() !== 200) {
+            throw new RuntimeException('Error refreshing credentials from credentialsURI, statusCode: ' . $result->getStatusCode() . ', result: ' . (string) $result);
+        }
+
+        $credentials = $result->toArray();
+
+        if (!isset($credentials['AccessKeyId']) || !isset($credentials['AccessKeySecret']) || !isset($credentials['SecurityToken']) || !isset($credentials['Expiration'])) {
+            throw new RuntimeException('Error retrieving credentials from credentialsURI result:' . $result->toJson());
+        }
+
+        return $credentials;
+    }
+
+
+    /**
+     * @return string
+     */
+    public function key()
+    {
+        return 'credential_uri#' . $this->credentialsURI;
+    }
+
+    /**
+     * @return string
+     */
+    public function getProviderName()
+    {
+        return 'credential_uri';
+    }
+}

include/vendor/alibabacloud/credentials/src/Utils/Filter.php

@@ -0,0 +1,233 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Utils;
+
+use InvalidArgumentException;
+
+/**
+ * Class Filter
+ *
+ * @package AlibabaCloud\Credentials\Utils
+ */
+class Filter
+{
+
+    /**
+     * @param $name
+     *
+     * @codeCoverageIgnore
+     * @return string
+     */
+    public static function credentialName($name)
+    {
+        if (!is_string($name)) {
+            throw new InvalidArgumentException('Name must be a string');
+        }
+
+        if ($name === '') {
+            throw new InvalidArgumentException('Name cannot be empty');
+        }
+
+        return $name;
+    }
+
+    /**
+     * @param $bearerToken
+     *
+     * @return mixed
+     * @throws InvalidArgumentException
+     */
+    public static function bearerToken($bearerToken)
+    {
+        if (!is_string($bearerToken)) {
+            throw new InvalidArgumentException('bearerToken must be a string');
+        }
+
+        if ($bearerToken === '') {
+            throw new InvalidArgumentException('bearerToken cannot be empty');
+        }
+
+        return $bearerToken;
+    }
+
+    /**
+     * @param $publicKeyId
+     *
+     * @return mixed
+     */
+    public static function publicKeyId($publicKeyId)
+    {
+        if (!is_string($publicKeyId)) {
+            throw new InvalidArgumentException('publicKeyId must be a string');
+        }
+
+        if ($publicKeyId === '') {
+            throw new InvalidArgumentException('publicKeyId cannot be empty');
+        }
+
+        return $publicKeyId;
+    }
+
+    /**
+     * @param $privateKeyFile
+     *
+     * @return mixed
+     */
+    public static function privateKeyFile($privateKeyFile)
+    {
+        if (!is_string($privateKeyFile)) {
+            throw new InvalidArgumentException('privateKeyFile must be a string');
+        }
+
+        if ($privateKeyFile === '') {
+            throw new InvalidArgumentException('privateKeyFile cannot be empty');
+        }
+
+        return $privateKeyFile;
+    }
+
+    /**
+     * @param string|null $roleName
+     */
+    public static function roleName($roleName)
+    {
+        if ($roleName === null) {
+            return;
+        }
+
+        if (!is_string($roleName)) {
+            throw new InvalidArgumentException('roleName must be a string');
+        }
+
+        if ($roleName === '') {
+            throw new InvalidArgumentException('roleName cannot be empty');
+        }
+    }
+
+    /**
+     * @param boolean|null $disableIMDSv1
+     */
+    public static function disableIMDSv1($disableIMDSv1)
+    {
+        if (!is_bool($disableIMDSv1)) {
+            throw new InvalidArgumentException('disableIMDSv1 must be a boolean');
+        }
+    }
+
+
+    /**
+     * @param string|null $roleArn
+     */
+    public static function roleArn($roleArn)
+    {
+        if (is_null($roleArn) || $roleArn === '') {
+            throw new InvalidArgumentException('roleArn cannot be empty');
+        }
+    }
+
+    /**
+     * @param string|null $roleArn
+     */
+    public static function oidcProviderArn($oidcProviderArn)
+    {
+        if (is_null($oidcProviderArn) || $oidcProviderArn === '') {
+            throw new InvalidArgumentException('oidcProviderArn cannot be empty');
+        }
+    }
+
+    /**
+     * @param string|null $roleArn
+     */
+    public static function oidcTokenFilePath($oidcTokenFilePath)
+    {
+        if (is_null($oidcTokenFilePath) || $oidcTokenFilePath === '') {
+            throw new InvalidArgumentException('oidcTokenFilePath cannot be empty');
+        }
+    }
+
+    /**
+     * @param string $accessKeyId
+     * @param string $accessKeySecret
+     */
+    public static function accessKey($accessKeyId, $accessKeySecret)
+    {
+        if (!is_string($accessKeyId)) {
+            throw new InvalidArgumentException('accessKeyId must be a string');
+        }
+
+        if ($accessKeyId === '') {
+            throw new InvalidArgumentException('accessKeyId cannot be empty');
+        }
+
+        if (!is_string($accessKeySecret)) {
+            throw new InvalidArgumentException('accessKeySecret must be a string');
+        }
+
+        if ($accessKeySecret === '') {
+            throw new InvalidArgumentException('accessKeySecret cannot be empty');
+        }
+    }
+
+    /**
+     * @param string $securityToken
+     */
+    public static function securityToken($securityToken)
+    {
+        if (!is_string($securityToken)) {
+            throw new InvalidArgumentException('securityToken must be a string');
+        }
+
+        if ($securityToken === '') {
+            throw new InvalidArgumentException('securityToken cannot be empty');
+        }
+    }
+
+    /**
+     * @param int $expiration
+     */
+    public static function expiration($expiration)
+    {
+        if (!is_int($expiration)) {
+            throw new InvalidArgumentException('expiration must be a int');
+        }
+    }
+
+    /**
+     * @param int $connectTimeout
+     * @param int $readTimeout
+     */
+    public static function timeout($connectTimeout, $readTimeout)
+    {
+        if (!is_int($connectTimeout)) {
+            throw new InvalidArgumentException('connectTimeout must be a int');
+        }
+
+        if (!is_int($readTimeout)) {
+            throw new InvalidArgumentException('readTimeout must be a int');
+        }
+    }
+
+    /**
+     * @param string|null $credentialsURI
+     */
+    public static function credentialsURI($credentialsURI)
+    {
+        if (!is_string($credentialsURI)) {
+            throw new InvalidArgumentException('credentialsURI must be a string');
+        }
+
+        if ($credentialsURI === '') {
+            throw new InvalidArgumentException('credentialsURI cannot be empty');
+        }
+    }
+
+    /**
+     * @param boolean|null $reuseLastProviderEnabled
+     */
+    public static function reuseLastProviderEnabled($reuseLastProviderEnabled)
+    {
+        if (!is_bool($reuseLastProviderEnabled)) {
+            throw new InvalidArgumentException('reuseLastProviderEnabled must be a boolean');
+        }
+    }
+}

include/vendor/alibabacloud/credentials/src/Utils/Helper.php

@@ -0,0 +1,251 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Utils;
+
+use AlibabaCloud\Credentials\Credential;
+use org\bovigo\vfs\vfsStream;
+use Closure;
+
+/**
+ * Class Helper
+ *
+ * @package AlibabaCloud\Credentials\Utils
+ */
+class Helper
+{
+    /**
+     * @param array $arrays
+     *
+     * @return array
+     */
+    public static function merge(array $arrays)
+    {
+        $result = [];
+        foreach ($arrays as $array) {
+            foreach ($array as $key => $value) {
+                if (is_int($key)) {
+                    $result[] = $value;
+                    continue;
+                }
+
+                if (isset($result[$key]) && is_array($result[$key])) {
+                    $result[$key] = self::merge(
+                        [$result[$key], $value]
+                    );
+                    continue;
+                }
+
+                $result[$key] = $value;
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * @param      $filename
+     *
+     * @return bool
+     */
+    public static function inOpenBasedir($filename)
+    {
+        $open_basedir = ini_get('open_basedir');
+        if (!$open_basedir) {
+            return true;
+        }
+        if (0 === strpos($filename, vfsStream::SCHEME)) {
+            // 虚拟文件忽略
+            return true;
+        }
+
+        $dirs = explode(PATH_SEPARATOR, $open_basedir);
+
+        return empty($dirs) || self::inDir($filename, $dirs);
+    }
+
+    /**
+     * @param string $filename
+     * @param array  $dirs
+     *
+     * @return bool
+     */
+    public static function inDir($filename, array $dirs)
+    {
+        foreach ($dirs as $dir) {
+            if ($dir[strlen($dir) - 1] !== DIRECTORY_SEPARATOR) {
+                $dir .= DIRECTORY_SEPARATOR;
+            }
+
+            if (0 === strpos($filename, $dir)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * @return bool
+     */
+    public static function isWindows()
+    {
+        return PATH_SEPARATOR === ';';
+    }
+
+    /**
+     * @param $key
+     *
+     * @return bool|mixed
+     */
+    public static function envNotEmpty($key)
+    {
+        $value = self::env($key, false);
+        if ($value) {
+            return $value;
+        }
+
+        return false;
+    }
+
+    /**
+     * Gets the value of an environment variable.
+     *
+     * @param string $key
+     * @param mixed  $default
+     *
+     * @return mixed
+     */
+    public static function env($key, $default = null)
+    {
+        $value = getenv($key);
+
+        if ($value === false) {
+            return self::value($default);
+        }
+
+        if (self::envSubstr($value)) {
+            return substr($value, 1, -1);
+        }
+
+        return self::envConversion($value);
+    }
+
+    /**
+     * Return the default value of the given value.
+     *
+     * @param mixed $value
+     *
+     * @return mixed
+     */
+    public static function value($value)
+    {
+        return $value instanceof Closure ? $value() : $value;
+    }
+
+    /**
+     * @param $value
+     *
+     * @return bool
+     */
+    public static function envSubstr($value)
+    {
+        return ($valueLength = strlen($value)) > 1
+            && strpos($value, '"') === 0
+            && $value[$valueLength - 1] === '"';
+    }
+
+    /**
+     * @param $value
+     *
+     * @return bool|string|null
+     */
+    public static function envConversion($value)
+    {
+        $key = strtolower($value);
+
+        if ($key === 'null' || $key === '(null)') {
+            return null;
+        }
+
+        $list = [
+            'true'    => true,
+            '(true)'  => true,
+            'false'   => false,
+            '(false)' => false,
+            'empty'   => '',
+            '(empty)' => '',
+        ];
+
+        return isset($list[$key]) ? $list[$key] : $value;
+    }
+
+    /**
+     * Gets the environment's HOME directory.
+     *
+     * @return null|string
+     */
+    public static function getHomeDirectory()
+    {
+        if (getenv('HOME')) {
+            return getenv('HOME');
+        }
+
+        return (getenv('HOMEDRIVE') && getenv('HOMEPATH'))
+            ? getenv('HOMEDRIVE') . getenv('HOMEPATH')
+            : null;
+    }
+
+    /**
+     * @param mixed ...$parameters
+     *
+     * @codeCoverageIgnore
+     */
+    public static function dd(...$parameters)
+    {
+        dump(...$parameters);
+        exit;
+    }
+
+    /**
+     * Snake to camel case.
+     *
+     * @param string $str
+     *
+     * @return string
+     */
+    public static function snakeToCamelCase($str)
+    {
+        $components = explode('_', $str);
+        $camelCaseStr = $components[0];
+        for ($i = 1; $i < count($components); $i++) {
+            $camelCaseStr .= ucfirst($components[$i]);
+        }
+        return $camelCaseStr;
+    }
+
+    /**
+     * Get user agent.
+     *
+     * @param string $userAgent
+     *
+     * @return string
+     */
+    public static function getUserAgent()
+    {
+        return sprintf('AlibabaCloud (%s; %s) PHP/%s Credentials/%s TeaDSL/1', PHP_OS, \PHP_SAPI, PHP_VERSION, Credential::VERSION);
+    }
+
+    /**
+     * @param array $arrays
+     * @param string $key
+     *
+     * @return mix
+     */
+    public static function unsetReturnNull(array $arrays, $key)
+    {
+        if(isset($arrays[$key])) {
+            return $arrays[$key];
+        }
+        return null;
+    }
+}

include/vendor/alibabacloud/credentials/src/Utils/MockTrait.php

@@ -0,0 +1,120 @@
+<?php
+
+namespace AlibabaCloud\Credentials\Utils;
+
+use Exception;
+use GuzzleHttp\Exception\RequestException;
+use GuzzleHttp\Handler\MockHandler;
+use GuzzleHttp\Psr7\Response;
+use GuzzleHttp\Middleware;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * Trait MockTrait
+ *
+ * @package AlibabaCloud\Credentials\Utils
+ */
+trait MockTrait
+{
+    /**
+     * @var array
+     */
+    private static $mockQueue = [];
+
+    /**
+     * @var array
+     */
+    private static $history = [];
+
+    /**
+     * @var MockHandler
+     */
+    private static $mock;
+
+    /**
+     * @param integer             $status
+     * @param array               $headers
+     * @param array|string|object $body
+     */
+    public static function mockResponse($status = 200, array $headers = [], $body = null)
+    {
+        if (is_array($body) || is_object($body)) {
+            $body = json_encode($body);
+        }
+
+        self::$mockQueue[] = new Response($status, $headers, $body);
+        self::createHandlerStack();
+    }
+
+    private static function createHandlerStack()
+    {
+        self::$mock = new MockHandler(self::$mockQueue);
+    }
+
+    /**
+     * @return MockHandler
+     */
+    public static function getHandlerHistory()
+    {
+         return Middleware::history(self::$history);
+    }
+
+    /**
+     * @param string                 $message
+     * @param RequestInterface       $request
+     * @param ResponseInterface|null $response
+     * @param Exception|null         $previous
+     * @param array                  $handlerContext
+     */
+    public static function mockRequestException(
+        $message,
+        RequestInterface $request,
+        ResponseInterface $response = null,
+        Exception $previous = null,
+        array $handlerContext = []
+    ) {
+        self::$mockQueue[] = new RequestException(
+            $message,
+            $request,
+            $response,
+            $previous,
+            $handlerContext
+        );
+
+        self::createHandlerStack();
+    }
+
+    /**
+     * @return void
+     */
+    public static function cancelMock()
+    {
+        self::$mockQueue = [];
+        self::$mock      = null;
+    }
+
+    /**
+     * @return bool
+     */
+    public static function hasMock()
+    {
+        return (bool)self::$mockQueue;
+    }
+
+    /**
+     * @return MockHandler
+     */
+    public static function getMock()
+    {
+        return self::$mock;
+    }
+
+    /**
+     * @return array
+     */
+    public static function getHistroy()
+    {
+        return self::$history;
+    }
+}

include/vendor/alibabacloud/tea-utils/src/Utils/ExtendsParameters.php

@@ -0,0 +1,38 @@
+<?php
+
+// This file is auto-generated, don't edit it. Thanks.
+namespace AlibabaCloud\Tea\Utils\Utils;
+
+use AlibabaCloud\Tea\Model;
+
+class ExtendsParameters extends Model {
+    public function validate() {}
+    public function toMap() {
+        $res = [];
+        if (null !== $this->headers) {
+            $res['headers'] = $this->headers;
+        }
+        if (null !== $this->queries) {
+            $res['queries'] = $this->queries;
+        }
+        return $res;
+    }
+    /**
+     * @param array $map
+     * @return ExtendsParameters
+     */
+    public static function fromMap($map = []) {
+        $model = new self();
+        if(isset($map['headers'])){
+            $model->headers = $map['headers'];
+        }
+        if(isset($map['queries'])){
+            $model->queries = $map['queries'];
+        }
+        return $model;
+    }
+    public $headers;
+
+    public $queries;
+
+}

include/vendor/aliyuncs/oss-sdk-php/tests/OSS/Tests/OssClientPresignTest.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace OSS\Tests;
+
+use OSS\Core\OssException;
+use OSS\Credentials\StaticCredentialsProvider;
+use OSS\Http\RequestCore;
+use OSS\Http\ResponseCore;
+use OSS\OssClient;
+
+require_once __DIR__ . DIRECTORY_SEPARATOR . 'TestOssClientBase.php';
+
+
+class OssClientPresignTest extends TestOssClientBase
+{
+    protected $stsOssClient;
+
+    public function testObjectWithSignV1()
+    {
+        $config = array(
+            'signatureVersion' => OssClient::OSS_SIGNATURE_VERSION_V1
+        );
+        $this->bucket = Common::getBucketName() . '-' . time();
+        $this->ossClient = Common::getOssClient($config);
+        $this->ossClient->createBucket($this->bucket);
+        Common::waitMetaSync();
+
+        $object = "a.file";
+        $this->ossClient->putObject($this->bucket, $object, "hi oss");
+        $timeout = 3600;
+        $options = array(
+            "response-content-disposition" => "inline"
+        );
+        try {
+            $signedUrl = $this->ossClient->signUrl($this->bucket, $object, $timeout, OssClient::OSS_HTTP_GET, $options);
+        } catch (OssException $e) {
+            $this->assertFalse(true);
+        }
+        $this->assertStringContainsString("response-content-disposition=inline", $signedUrl);
+        $options = array(
+            "response-content-disposition" => "attachment",
+        );
+
+        try {
+            $signedUrl = $this->ossClient->signUrl($this->bucket, $object, $timeout, OssClient::OSS_HTTP_GET, $options);
+        } catch (OssException $e) {
+            $this->assertFalse(true);
+        }
+        $this->assertStringContainsString("response-content-disposition=attachment", $signedUrl);
+
+        $httpCore = new RequestCore($signedUrl);
+        $httpCore->set_body("");
+        $httpCore->set_method("GET");
+        $httpCore->connect_timeout = 10;
+        $httpCore->timeout = 10;
+        $httpCore->add_header("Content-Type", "");
+        $httpCore->send_request();
+        $this->assertEquals(200, $httpCore->response_code);        
+    }
+
+    protected function tearDown(): void
+    {
+        $this->ossClient->deleteObject($this->bucket, "a.file");
+        parent::tearDown();
+    }
+
+    protected function setUp(): void
+    {
+    }
+}

include/vendor/ezyang/htmlpurifier/CREDITS

@@ -0,0 +1,9 @@
+
+CREDITS
+
+Almost everything written by Edward Z. Yang (Ambush Commander).  Lots of thanks
+to the DevNetwork Community for their help (see docs/ref-devnetwork.html for
+more details), Feyd especially (namely IPv6 and optimization).  Thanks to RSnake
+for letting me package his fantastic XSS cheatsheet for a smoketest.
+
+    vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/LICENSE

@@ -0,0 +1,504 @@
+		  GNU LESSER GENERAL PUBLIC LICENSE
+		       Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the Lesser GPL.  It also counts
+ as the successor of the GNU Library Public License, version 2, hence
+ the version number 2.1.]
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+  This license, the Lesser General Public License, applies to some
+specially designated software packages--typically libraries--of the
+Free Software Foundation and other authors who decide to use it.  You
+can use it too, but we suggest you first think carefully about whether
+this license or the ordinary General Public License is the better
+strategy to use in any particular case, based on the explanations below.
+
+  When we speak of free software, we are referring to freedom of use,
+not price.  Our General Public Licenses are designed to make sure that
+you have the freedom to distribute copies of free software (and charge
+for this service if you wish); that you receive source code or can get
+it if you want it; that you can change the software and use pieces of
+it in new free programs; and that you are informed that you can do
+these things.
+
+  To protect your rights, we need to make restrictions that forbid
+distributors to deny you these rights or to ask you to surrender these
+rights.  These restrictions translate to certain responsibilities for
+you if you distribute copies of the library or if you modify it.
+
+  For example, if you distribute copies of the library, whether gratis
+or for a fee, you must give the recipients all the rights that we gave
+you.  You must make sure that they, too, receive or can get the source
+code.  If you link other code with the library, you must provide
+complete object files to the recipients, so that they can relink them
+with the library after making changes to the library and recompiling
+it.  And you must show them these terms so they know their rights.
+
+  We protect your rights with a two-step method: (1) we copyright the
+library, and (2) we offer you this license, which gives you legal
+permission to copy, distribute and/or modify the library.
+
+  To protect each distributor, we want to make it very clear that
+there is no warranty for the free library.  Also, if the library is
+modified by someone else and passed on, the recipients should know
+that what they have is not the original version, so that the original
+author's reputation will not be affected by problems that might be
+introduced by others.
+
+  Finally, software patents pose a constant threat to the existence of
+any free program.  We wish to make sure that a company cannot
+effectively restrict the users of a free program by obtaining a
+restrictive license from a patent holder.  Therefore, we insist that
+any patent license obtained for a version of the library must be
+consistent with the full freedom of use specified in this license.
+
+  Most GNU software, including some libraries, is covered by the
+ordinary GNU General Public License.  This license, the GNU Lesser
+General Public License, applies to certain designated libraries, and
+is quite different from the ordinary General Public License.  We use
+this license for certain libraries in order to permit linking those
+libraries into non-free programs.
+
+  When a program is linked with a library, whether statically or using
+a shared library, the combination of the two is legally speaking a
+combined work, a derivative of the original library.  The ordinary
+General Public License therefore permits such linking only if the
+entire combination fits its criteria of freedom.  The Lesser General
+Public License permits more lax criteria for linking other code with
+the library.
+
+  We call this license the "Lesser" General Public License because it
+does Less to protect the user's freedom than the ordinary General
+Public License.  It also provides other free software developers Less
+of an advantage over competing non-free programs.  These disadvantages
+are the reason we use the ordinary General Public License for many
+libraries.  However, the Lesser license provides advantages in certain
+special circumstances.
+
+  For example, on rare occasions, there may be a special need to
+encourage the widest possible use of a certain library, so that it becomes
+a de-facto standard.  To achieve this, non-free programs must be
+allowed to use the library.  A more frequent case is that a free
+library does the same job as widely used non-free libraries.  In this
+case, there is little to gain by limiting the free library to free
+software only, so we use the Lesser General Public License.
+
+  In other cases, permission to use a particular library in non-free
+programs enables a greater number of people to use a large body of
+free software.  For example, permission to use the GNU C Library in
+non-free programs enables many more people to use the whole GNU
+operating system, as well as its variant, the GNU/Linux operating
+system.
+
+  Although the Lesser General Public License is Less protective of the
+users' freedom, it does ensure that the user of a program that is
+linked with the Library has the freedom and the wherewithal to run
+that program using a modified version of the Library.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.  Pay close attention to the difference between a
+"work based on the library" and a "work that uses the library".  The
+former contains code derived from the library, whereas the latter must
+be combined with the library in order to run.
+
+		  GNU LESSER GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License Agreement applies to any software library or other
+program which contains a notice placed by the copyright holder or
+other authorized party saying it may be distributed under the terms of
+this Lesser General Public License (also called "this License").
+Each licensee is addressed as "you".
+
+  A "library" means a collection of software functions and/or data
+prepared so as to be conveniently linked with application programs
+(which use some of those functions and data) to form executables.
+
+  The "Library", below, refers to any such software library or work
+which has been distributed under these terms.  A "work based on the
+Library" means either the Library or any derivative work under
+copyright law: that is to say, a work containing the Library or a
+portion of it, either verbatim or with modifications and/or translated
+straightforwardly into another language.  (Hereinafter, translation is
+included without limitation in the term "modification".)
+
+  "Source code" for a work means the preferred form of the work for
+making modifications to it.  For a library, complete source code means
+all the source code for all modules it contains, plus any associated
+interface definition files, plus the scripts used to control compilation
+and installation of the library.
+
+  Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running a program using the Library is not restricted, and output from
+such a program is covered only if its contents constitute a work based
+on the Library (independent of the use of the Library in a tool for
+writing it).  Whether that is true depends on what the Library does
+and what the program that uses the Library does.
+
+  1. You may copy and distribute verbatim copies of the Library's
+complete source code as you receive it, in any medium, provided that
+you conspicuously and appropriately publish on each copy an
+appropriate copyright notice and disclaimer of warranty; keep intact
+all the notices that refer to this License and to the absence of any
+warranty; and distribute a copy of this License along with the
+Library.
+
+  You may charge a fee for the physical act of transferring a copy,
+and you may at your option offer warranty protection in exchange for a
+fee.
+
+  2. You may modify your copy or copies of the Library or any portion
+of it, thus forming a work based on the Library, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) The modified work must itself be a software library.
+
+    b) You must cause the files modified to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    c) You must cause the whole of the work to be licensed at no
+    charge to all third parties under the terms of this License.
+
+    d) If a facility in the modified Library refers to a function or a
+    table of data to be supplied by an application program that uses
+    the facility, other than as an argument passed when the facility
+    is invoked, then you must make a good faith effort to ensure that,
+    in the event an application does not supply such function or
+    table, the facility still operates, and performs whatever part of
+    its purpose remains meaningful.
+
+    (For example, a function in a library to compute square roots has
+    a purpose that is entirely well-defined independent of the
+    application.  Therefore, Subsection 2d requires that any
+    application-supplied function or table used by this function must
+    be optional: if the application does not supply it, the square
+    root function must still compute square roots.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Library,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Library, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote
+it.
+
+Thus, it is not the intent of this section to claim rights or contest
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+
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+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!
+
+    vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/README.md

@@ -0,0 +1,29 @@
+HTML Purifier [![Build Status](https://github.com/ezyang/htmlpurifier/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/ezyang/htmlpurifier/actions/workflows/ci.yml)
+=============
+
+HTML Purifier is an HTML filtering solution that uses a unique combination
+of robust whitelists and aggressive parsing to ensure that not only are
+XSS attacks thwarted, but the resulting HTML is standards compliant.
+
+HTML Purifier is oriented towards richly formatted documents from
+untrusted sources that require CSS and a full tag-set.  This library can
+be configured to accept a more restrictive set of tags, but it won't be
+as efficient as more bare-bones parsers. It will, however, do the job
+right, which may be more important.
+
+Places to go:
+
+* See INSTALL for a quick installation guide
+* See docs/ for developer-oriented documentation, code examples and
+  an in-depth installation guide.
+* See WYSIWYG for information on editors like TinyMCE and FCKeditor
+
+HTML Purifier can be found on the web at: [http://htmlpurifier.org/](http://htmlpurifier.org/)
+
+## Installation
+
+Package available on [Composer](https://packagist.org/packages/ezyang/htmlpurifier).
+
+If you're using Composer to manage dependencies, you can use
+
+    $ composer require ezyang/htmlpurifier

include/vendor/ezyang/htmlpurifier/VERSION

@@ -0,0 +1 @@
+4.18.0

include/vendor/ezyang/htmlpurifier/composer.json

@@ -0,0 +1,45 @@
+{
+    "name": "ezyang/htmlpurifier",
+    "description": "Standards compliant HTML filter written in PHP",
+    "type": "library",
+    "keywords": ["html"],
+    "homepage": "http://htmlpurifier.org/",
+    "license": "LGPL-2.1-or-later",
+    "authors": [
+        {
+            "name": "Edward Z. Yang",
+            "email": "admin@htmlpurifier.org",
+            "homepage": "http://ezyang.com"
+        }
+    ],
+    "require": {
+        "php": "~5.6.0 || ~7.0.0 || ~7.1.0 || ~7.2.0 || ~7.3.0 || ~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0"
+    },
+    "require-dev": {
+        "cerdic/css-tidy": "^1.7 || ^2.0",
+        "simpletest/simpletest": "dev-master"
+    },
+    "autoload": {
+        "psr-0": { "HTMLPurifier": "library/" },
+        "files": ["library/HTMLPurifier.composer.php"],
+        "exclude-from-classmap": [
+            "/library/HTMLPurifier/Language/"
+        ]
+    },
+    "suggest": {
+        "cerdic/css-tidy": "If you want to use the filter 'Filter.ExtractStyleBlocks'.",
+        "ext-iconv": "Converts text to and from non-UTF-8 encodings",
+        "ext-bcmath": "Used for unit conversion and imagecrash protection",
+        "ext-tidy": "Used for pretty-printing HTML"
+    },
+    "config": {
+        "sort-packages": true
+    },
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "https://github.com/ezyang/simpletest.git",
+            "no-api": true
+        }
+    ]
+}

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier.auto.php

@@ -0,0 +1,11 @@
+<?php
+
+/**
+ * This is a stub include that automatically configures the include path.
+ */
+
+set_include_path(dirname(__FILE__) . PATH_SEPARATOR . get_include_path() );
+require_once 'HTMLPurifier/Bootstrap.php';
+require_once 'HTMLPurifier.autoload.php';
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload-legacy.php

@@ -0,0 +1,14 @@
+<?php
+
+/**
+ * @file
+ * Legacy autoloader for systems lacking spl_autoload_register
+ *
+ */
+
+spl_autoload_register(function($class)
+{
+     return HTMLPurifier_Bootstrap::autoload($class);
+});
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier.autoload.php

@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * @file
+ * Convenience file that registers autoload handler for HTML Purifier.
+ * It also does some sanity checks.
+ */
+
+if (function_exists('spl_autoload_register') && function_exists('spl_autoload_unregister')) {
+    // We need unregister for our pre-registering functionality
+    HTMLPurifier_Bootstrap::registerAutoload();
+    if (function_exists('__autoload')) {
+        // Be polite and ensure that userland autoload gets retained
+        spl_autoload_register('__autoload');
+    }
+} elseif (!function_exists('__autoload')) {
+    require dirname(__FILE__) . '/HTMLPurifier.autoload-legacy.php';
+}
+
+// phpcs:ignore PHPCompatibility.IniDirectives.RemovedIniDirectives.zend_ze1_compatibility_modeRemoved
+if (ini_get('zend.ze1_compatibility_mode')) {
+    trigger_error("HTML Purifier is not compatible with zend.ze1_compatibility_mode; please turn it off", E_USER_ERROR);
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier.composer.php

@@ -0,0 +1,4 @@
+<?php
+if (!defined('HTMLPURIFIER_PREFIX')) {
+    define('HTMLPURIFIER_PREFIX', dirname(__FILE__));
+}

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier.func.php

@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * @file
+ * Defines a function wrapper for HTML Purifier for quick use.
+ * @note ''HTMLPurifier()'' is NOT the same as ''new HTMLPurifier()''
+ */
+
+/**
+ * Purify HTML.
+ * @param string $html String HTML to purify
+ * @param mixed $config Configuration to use, can be any value accepted by
+ *        HTMLPurifier_Config::create()
+ * @return string
+ */
+function HTMLPurifier($html, $config = null)
+{
+    static $purifier = false;
+    if (!$purifier) {
+        $purifier = new HTMLPurifier();
+    }
+    return $purifier->purify($html, $config);
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier.includes.php

@@ -0,0 +1,236 @@
+<?php
+
+/**
+ * @file
+ * This file was auto-generated by generate-includes.php and includes all of
+ * the core files required by HTML Purifier. Use this if performance is a
+ * primary concern and you are using an opcode cache. PLEASE DO NOT EDIT THIS
+ * FILE, changes will be overwritten the next time the script is run.
+ *
+ * @version 4.18.0
+ *
+ * @warning
+ *      You must *not* include any other HTML Purifier files before this file,
+ *      because 'require' not 'require_once' is used.
+ *
+ * @warning
+ *      This file requires that the include path contains the HTML Purifier
+ *      library directory; this is not auto-set.
+ */
+
+require 'HTMLPurifier.php';
+require 'HTMLPurifier/Arborize.php';
+require 'HTMLPurifier/AttrCollections.php';
+require 'HTMLPurifier/AttrDef.php';
+require 'HTMLPurifier/AttrTransform.php';
+require 'HTMLPurifier/AttrTypes.php';
+require 'HTMLPurifier/AttrValidator.php';
+require 'HTMLPurifier/Bootstrap.php';
+require 'HTMLPurifier/Definition.php';
+require 'HTMLPurifier/CSSDefinition.php';
+require 'HTMLPurifier/ChildDef.php';
+require 'HTMLPurifier/Config.php';
+require 'HTMLPurifier/ConfigSchema.php';
+require 'HTMLPurifier/ContentSets.php';
+require 'HTMLPurifier/Context.php';
+require 'HTMLPurifier/DefinitionCache.php';
+require 'HTMLPurifier/DefinitionCacheFactory.php';
+require 'HTMLPurifier/Doctype.php';
+require 'HTMLPurifier/DoctypeRegistry.php';
+require 'HTMLPurifier/ElementDef.php';
+require 'HTMLPurifier/Encoder.php';
+require 'HTMLPurifier/EntityLookup.php';
+require 'HTMLPurifier/EntityParser.php';
+require 'HTMLPurifier/ErrorCollector.php';
+require 'HTMLPurifier/ErrorStruct.php';
+require 'HTMLPurifier/Exception.php';
+require 'HTMLPurifier/Filter.php';
+require 'HTMLPurifier/Generator.php';
+require 'HTMLPurifier/HTMLDefinition.php';
+require 'HTMLPurifier/HTMLModule.php';
+require 'HTMLPurifier/HTMLModuleManager.php';
+require 'HTMLPurifier/IDAccumulator.php';
+require 'HTMLPurifier/Injector.php';
+require 'HTMLPurifier/Language.php';
+require 'HTMLPurifier/LanguageFactory.php';
+require 'HTMLPurifier/Length.php';
+require 'HTMLPurifier/Lexer.php';
+require 'HTMLPurifier/Node.php';
+require 'HTMLPurifier/PercentEncoder.php';
+require 'HTMLPurifier/PropertyList.php';
+require 'HTMLPurifier/PropertyListIterator.php';
+require 'HTMLPurifier/Queue.php';
+require 'HTMLPurifier/Strategy.php';
+require 'HTMLPurifier/StringHash.php';
+require 'HTMLPurifier/StringHashParser.php';
+require 'HTMLPurifier/TagTransform.php';
+require 'HTMLPurifier/Token.php';
+require 'HTMLPurifier/TokenFactory.php';
+require 'HTMLPurifier/URI.php';
+require 'HTMLPurifier/URIDefinition.php';
+require 'HTMLPurifier/URIFilter.php';
+require 'HTMLPurifier/URIParser.php';
+require 'HTMLPurifier/URIScheme.php';
+require 'HTMLPurifier/URISchemeRegistry.php';
+require 'HTMLPurifier/UnitConverter.php';
+require 'HTMLPurifier/VarParser.php';
+require 'HTMLPurifier/VarParserException.php';
+require 'HTMLPurifier/Zipper.php';
+require 'HTMLPurifier/AttrDef/CSS.php';
+require 'HTMLPurifier/AttrDef/Clone.php';
+require 'HTMLPurifier/AttrDef/Enum.php';
+require 'HTMLPurifier/AttrDef/Integer.php';
+require 'HTMLPurifier/AttrDef/Lang.php';
+require 'HTMLPurifier/AttrDef/Switch.php';
+require 'HTMLPurifier/AttrDef/Text.php';
+require 'HTMLPurifier/AttrDef/URI.php';
+require 'HTMLPurifier/AttrDef/CSS/Number.php';
+require 'HTMLPurifier/AttrDef/CSS/AlphaValue.php';
+require 'HTMLPurifier/AttrDef/CSS/Background.php';
+require 'HTMLPurifier/AttrDef/CSS/BackgroundPosition.php';
+require 'HTMLPurifier/AttrDef/CSS/Border.php';
+require 'HTMLPurifier/AttrDef/CSS/Color.php';
+require 'HTMLPurifier/AttrDef/CSS/Composite.php';
+require 'HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php';
+require 'HTMLPurifier/AttrDef/CSS/Filter.php';
+require 'HTMLPurifier/AttrDef/CSS/Font.php';
+require 'HTMLPurifier/AttrDef/CSS/FontFamily.php';
+require 'HTMLPurifier/AttrDef/CSS/Ident.php';
+require 'HTMLPurifier/AttrDef/CSS/ImportantDecorator.php';
+require 'HTMLPurifier/AttrDef/CSS/Length.php';
+require 'HTMLPurifier/AttrDef/CSS/ListStyle.php';
+require 'HTMLPurifier/AttrDef/CSS/Multiple.php';
+require 'HTMLPurifier/AttrDef/CSS/Percentage.php';
+require 'HTMLPurifier/AttrDef/CSS/Ratio.php';
+require 'HTMLPurifier/AttrDef/CSS/TextDecoration.php';
+require 'HTMLPurifier/AttrDef/CSS/URI.php';
+require 'HTMLPurifier/AttrDef/HTML/Bool.php';
+require 'HTMLPurifier/AttrDef/HTML/Nmtokens.php';
+require 'HTMLPurifier/AttrDef/HTML/Class.php';
+require 'HTMLPurifier/AttrDef/HTML/Color.php';
+require 'HTMLPurifier/AttrDef/HTML/ContentEditable.php';
+require 'HTMLPurifier/AttrDef/HTML/FrameTarget.php';
+require 'HTMLPurifier/AttrDef/HTML/ID.php';
+require 'HTMLPurifier/AttrDef/HTML/Pixels.php';
+require 'HTMLPurifier/AttrDef/HTML/Length.php';
+require 'HTMLPurifier/AttrDef/HTML/LinkTypes.php';
+require 'HTMLPurifier/AttrDef/HTML/MultiLength.php';
+require 'HTMLPurifier/AttrDef/URI/Email.php';
+require 'HTMLPurifier/AttrDef/URI/Host.php';
+require 'HTMLPurifier/AttrDef/URI/IPv4.php';
+require 'HTMLPurifier/AttrDef/URI/IPv6.php';
+require 'HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php';
+require 'HTMLPurifier/AttrTransform/Background.php';
+require 'HTMLPurifier/AttrTransform/BdoDir.php';
+require 'HTMLPurifier/AttrTransform/BgColor.php';
+require 'HTMLPurifier/AttrTransform/BoolToCSS.php';
+require 'HTMLPurifier/AttrTransform/Border.php';
+require 'HTMLPurifier/AttrTransform/EnumToCSS.php';
+require 'HTMLPurifier/AttrTransform/ImgRequired.php';
+require 'HTMLPurifier/AttrTransform/ImgSpace.php';
+require 'HTMLPurifier/AttrTransform/Input.php';
+require 'HTMLPurifier/AttrTransform/Lang.php';
+require 'HTMLPurifier/AttrTransform/Length.php';
+require 'HTMLPurifier/AttrTransform/Name.php';
+require 'HTMLPurifier/AttrTransform/NameSync.php';
+require 'HTMLPurifier/AttrTransform/Nofollow.php';
+require 'HTMLPurifier/AttrTransform/SafeEmbed.php';
+require 'HTMLPurifier/AttrTransform/SafeObject.php';
+require 'HTMLPurifier/AttrTransform/SafeParam.php';
+require 'HTMLPurifier/AttrTransform/ScriptRequired.php';
+require 'HTMLPurifier/AttrTransform/TargetBlank.php';
+require 'HTMLPurifier/AttrTransform/TargetNoopener.php';
+require 'HTMLPurifier/AttrTransform/TargetNoreferrer.php';
+require 'HTMLPurifier/AttrTransform/Textarea.php';
+require 'HTMLPurifier/ChildDef/Chameleon.php';
+require 'HTMLPurifier/ChildDef/Custom.php';
+require 'HTMLPurifier/ChildDef/Empty.php';
+require 'HTMLPurifier/ChildDef/List.php';
+require 'HTMLPurifier/ChildDef/Required.php';
+require 'HTMLPurifier/ChildDef/Optional.php';
+require 'HTMLPurifier/ChildDef/StrictBlockquote.php';
+require 'HTMLPurifier/ChildDef/Table.php';
+require 'HTMLPurifier/DefinitionCache/Decorator.php';
+require 'HTMLPurifier/DefinitionCache/Null.php';
+require 'HTMLPurifier/DefinitionCache/Serializer.php';
+require 'HTMLPurifier/DefinitionCache/Decorator/Cleanup.php';
+require 'HTMLPurifier/DefinitionCache/Decorator/Memory.php';
+require 'HTMLPurifier/HTMLModule/Bdo.php';
+require 'HTMLPurifier/HTMLModule/CommonAttributes.php';
+require 'HTMLPurifier/HTMLModule/Edit.php';
+require 'HTMLPurifier/HTMLModule/Forms.php';
+require 'HTMLPurifier/HTMLModule/Hypertext.php';
+require 'HTMLPurifier/HTMLModule/Iframe.php';
+require 'HTMLPurifier/HTMLModule/Image.php';
+require 'HTMLPurifier/HTMLModule/Legacy.php';
+require 'HTMLPurifier/HTMLModule/List.php';
+require 'HTMLPurifier/HTMLModule/Name.php';
+require 'HTMLPurifier/HTMLModule/Nofollow.php';
+require 'HTMLPurifier/HTMLModule/NonXMLCommonAttributes.php';
+require 'HTMLPurifier/HTMLModule/Object.php';
+require 'HTMLPurifier/HTMLModule/Presentation.php';
+require 'HTMLPurifier/HTMLModule/Proprietary.php';
+require 'HTMLPurifier/HTMLModule/Ruby.php';
+require 'HTMLPurifier/HTMLModule/SafeEmbed.php';
+require 'HTMLPurifier/HTMLModule/SafeObject.php';
+require 'HTMLPurifier/HTMLModule/SafeScripting.php';
+require 'HTMLPurifier/HTMLModule/Scripting.php';
+require 'HTMLPurifier/HTMLModule/StyleAttribute.php';
+require 'HTMLPurifier/HTMLModule/Tables.php';
+require 'HTMLPurifier/HTMLModule/Target.php';
+require 'HTMLPurifier/HTMLModule/TargetBlank.php';
+require 'HTMLPurifier/HTMLModule/TargetNoopener.php';
+require 'HTMLPurifier/HTMLModule/TargetNoreferrer.php';
+require 'HTMLPurifier/HTMLModule/Text.php';
+require 'HTMLPurifier/HTMLModule/Tidy.php';
+require 'HTMLPurifier/HTMLModule/XMLCommonAttributes.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Name.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Proprietary.php';
+require 'HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Strict.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Transitional.php';
+require 'HTMLPurifier/HTMLModule/Tidy/XHTML.php';
+require 'HTMLPurifier/Injector/AutoParagraph.php';
+require 'HTMLPurifier/Injector/DisplayLinkURI.php';
+require 'HTMLPurifier/Injector/Linkify.php';
+require 'HTMLPurifier/Injector/PurifierLinkify.php';
+require 'HTMLPurifier/Injector/RemoveEmpty.php';
+require 'HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php';
+require 'HTMLPurifier/Injector/SafeObject.php';
+require 'HTMLPurifier/Lexer/DOMLex.php';
+require 'HTMLPurifier/Lexer/DirectLex.php';
+require 'HTMLPurifier/Node/Comment.php';
+require 'HTMLPurifier/Node/Element.php';
+require 'HTMLPurifier/Node/Text.php';
+require 'HTMLPurifier/Strategy/Composite.php';
+require 'HTMLPurifier/Strategy/Core.php';
+require 'HTMLPurifier/Strategy/FixNesting.php';
+require 'HTMLPurifier/Strategy/MakeWellFormed.php';
+require 'HTMLPurifier/Strategy/RemoveForeignElements.php';
+require 'HTMLPurifier/Strategy/ValidateAttributes.php';
+require 'HTMLPurifier/TagTransform/Font.php';
+require 'HTMLPurifier/TagTransform/Simple.php';
+require 'HTMLPurifier/Token/Comment.php';
+require 'HTMLPurifier/Token/Tag.php';
+require 'HTMLPurifier/Token/Empty.php';
+require 'HTMLPurifier/Token/End.php';
+require 'HTMLPurifier/Token/Start.php';
+require 'HTMLPurifier/Token/Text.php';
+require 'HTMLPurifier/URIFilter/DisableExternal.php';
+require 'HTMLPurifier/URIFilter/DisableExternalResources.php';
+require 'HTMLPurifier/URIFilter/DisableResources.php';
+require 'HTMLPurifier/URIFilter/HostBlacklist.php';
+require 'HTMLPurifier/URIFilter/MakeAbsolute.php';
+require 'HTMLPurifier/URIFilter/Munge.php';
+require 'HTMLPurifier/URIFilter/SafeIframe.php';
+require 'HTMLPurifier/URIScheme/data.php';
+require 'HTMLPurifier/URIScheme/file.php';
+require 'HTMLPurifier/URIScheme/ftp.php';
+require 'HTMLPurifier/URIScheme/http.php';
+require 'HTMLPurifier/URIScheme/https.php';
+require 'HTMLPurifier/URIScheme/mailto.php';
+require 'HTMLPurifier/URIScheme/news.php';
+require 'HTMLPurifier/URIScheme/nntp.php';
+require 'HTMLPurifier/URIScheme/tel.php';
+require 'HTMLPurifier/VarParser/Flexible.php';
+require 'HTMLPurifier/VarParser/Native.php';

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier.kses.php

@@ -0,0 +1,30 @@
+<?php
+
+/**
+ * @file
+ * Emulation layer for code that used kses(), substituting in HTML Purifier.
+ */
+
+require_once dirname(__FILE__) . '/HTMLPurifier.auto.php';
+
+function kses($string, $allowed_html, $allowed_protocols = null)
+{
+    $config = HTMLPurifier_Config::createDefault();
+    $allowed_elements = array();
+    $allowed_attributes = array();
+    foreach ($allowed_html as $element => $attributes) {
+        $allowed_elements[$element] = true;
+        foreach ($attributes as $attribute => $x) {
+            $allowed_attributes["$element.$attribute"] = true;
+        }
+    }
+    $config->set('HTML.AllowedElements', $allowed_elements);
+    $config->set('HTML.AllowedAttributes', $allowed_attributes);
+    if ($allowed_protocols !== null) {
+        $config->set('URI.AllowedSchemes', $allowed_protocols);
+    }
+    $purifier = new HTMLPurifier($config);
+    return $purifier->purify($string);
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier.path.php

@@ -0,0 +1,11 @@
+<?php
+
+/**
+ * @file
+ * Convenience stub file that adds HTML Purifier's library file to the path
+ * without any other side-effects.
+ */
+
+set_include_path(dirname(__FILE__) . PATH_SEPARATOR . get_include_path() );
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier.php

@@ -0,0 +1,297 @@
+<?php
+
+/*! @mainpage
+ *
+ * HTML Purifier is an HTML filter that will take an arbitrary snippet of
+ * HTML and rigorously test, validate and filter it into a version that
+ * is safe for output onto webpages. It achieves this by:
+ *
+ *  -# Lexing (parsing into tokens) the document,
+ *  -# Executing various strategies on the tokens:
+ *      -# Removing all elements not in the whitelist,
+ *      -# Making the tokens well-formed,
+ *      -# Fixing the nesting of the nodes, and
+ *      -# Validating attributes of the nodes; and
+ *  -# Generating HTML from the purified tokens.
+ *
+ * However, most users will only need to interface with the HTMLPurifier
+ * and HTMLPurifier_Config.
+ */
+
+/*
+    HTML Purifier 4.18.0 - Standards Compliant HTML Filtering
+    Copyright (C) 2006-2008 Edward Z. Yang
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/**
+ * Facade that coordinates HTML Purifier's subsystems in order to purify HTML.
+ *
+ * @note There are several points in which configuration can be specified
+ *       for HTML Purifier.  The precedence of these (from lowest to
+ *       highest) is as follows:
+ *          -# Instance: new HTMLPurifier($config)
+ *          -# Invocation: purify($html, $config)
+ *       These configurations are entirely independent of each other and
+ *       are *not* merged (this behavior may change in the future).
+ *
+ * @todo We need an easier way to inject strategies using the configuration
+ *       object.
+ */
+class HTMLPurifier
+{
+
+    /**
+     * Version of HTML Purifier.
+     * @type string
+     */
+    public $version = '4.18.0';
+
+    /**
+     * Constant with version of HTML Purifier.
+     */
+    const VERSION = '4.18.0';
+
+    /**
+     * Global configuration object.
+     * @type HTMLPurifier_Config
+     */
+    public $config;
+
+    /**
+     * Array of extra filter objects to run on HTML,
+     * for backwards compatibility.
+     * @type HTMLPurifier_Filter[]
+     */
+    private $filters = array();
+
+    /**
+     * Single instance of HTML Purifier.
+     * @type HTMLPurifier
+     */
+    private static $instance;
+
+    /**
+     * @type HTMLPurifier_Strategy_Core
+     */
+    protected $strategy;
+
+    /**
+     * @type HTMLPurifier_Generator
+     */
+    protected $generator;
+
+    /**
+     * Resultant context of last run purification.
+     * Is an array of contexts if the last called method was purifyArray().
+     * @type HTMLPurifier_Context
+     */
+    public $context;
+
+    /**
+     * Initializes the purifier.
+     *
+     * @param HTMLPurifier_Config|mixed $config Optional HTMLPurifier_Config object
+     *                for all instances of the purifier, if omitted, a default
+     *                configuration is supplied (which can be overridden on a
+     *                per-use basis).
+     *                The parameter can also be any type that
+     *                HTMLPurifier_Config::create() supports.
+     */
+    public function __construct($config = null)
+    {
+        $this->config = HTMLPurifier_Config::create($config);
+        $this->strategy = new HTMLPurifier_Strategy_Core();
+    }
+
+    /**
+     * Adds a filter to process the output. First come first serve
+     *
+     * @param HTMLPurifier_Filter $filter HTMLPurifier_Filter object
+     */
+    public function addFilter($filter)
+    {
+        trigger_error(
+            'HTMLPurifier->addFilter() is deprecated, use configuration directives' .
+            ' in the Filter namespace or Filter.Custom',
+            E_USER_WARNING
+        );
+        $this->filters[] = $filter;
+    }
+
+    /**
+     * Filters an HTML snippet/document to be XSS-free and standards-compliant.
+     *
+     * @param string $html String of HTML to purify
+     * @param HTMLPurifier_Config $config Config object for this operation,
+     *                if omitted, defaults to the config object specified during this
+     *                object's construction. The parameter can also be any type
+     *                that HTMLPurifier_Config::create() supports.
+     *
+     * @return string Purified HTML
+     */
+    public function purify($html, $config = null)
+    {
+        // :TODO: make the config merge in, instead of replace
+        $config = $config ? HTMLPurifier_Config::create($config) : $this->config;
+
+        // implementation is partially environment dependant, partially
+        // configuration dependant
+        $lexer = HTMLPurifier_Lexer::create($config);
+
+        $context = new HTMLPurifier_Context();
+
+        // setup HTML generator
+        $this->generator = new HTMLPurifier_Generator($config, $context);
+        $context->register('Generator', $this->generator);
+
+        // set up global context variables
+        if ($config->get('Core.CollectErrors')) {
+            // may get moved out if other facilities use it
+            $language_factory = HTMLPurifier_LanguageFactory::instance();
+            $language = $language_factory->create($config, $context);
+            $context->register('Locale', $language);
+
+            $error_collector = new HTMLPurifier_ErrorCollector($context);
+            $context->register('ErrorCollector', $error_collector);
+        }
+
+        // setup id_accumulator context, necessary due to the fact that
+        // AttrValidator can be called from many places
+        $id_accumulator = HTMLPurifier_IDAccumulator::build($config, $context);
+        $context->register('IDAccumulator', $id_accumulator);
+
+        $html = HTMLPurifier_Encoder::convertToUTF8($html, $config, $context);
+
+        // setup filters
+        $filter_flags = $config->getBatch('Filter');
+        $custom_filters = $filter_flags['Custom'];
+        unset($filter_flags['Custom']);
+        $filters = array();
+        foreach ($filter_flags as $filter => $flag) {
+            if (!$flag) {
+                continue;
+            }
+            if (strpos($filter, '.') !== false) {
+                continue;
+            }
+            $class = "HTMLPurifier_Filter_$filter";
+            $filters[] = new $class;
+        }
+        foreach ($custom_filters as $filter) {
+            // maybe "HTMLPurifier_Filter_$filter", but be consistent with AutoFormat
+            $filters[] = $filter;
+        }
+        $filters = array_merge($filters, $this->filters);
+        // maybe prepare(), but later
+
+        for ($i = 0, $filter_size = count($filters); $i < $filter_size; $i++) {
+            $html = $filters[$i]->preFilter($html, $config, $context);
+        }
+
+        // purified HTML
+        $html =
+            $this->generator->generateFromTokens(
+                // list of tokens
+                $this->strategy->execute(
+                    // list of un-purified tokens
+                    $lexer->tokenizeHTML(
+                        // un-purified HTML
+                        $html,
+                        $config,
+                        $context
+                    ),
+                    $config,
+                    $context
+                )
+            );
+
+        for ($i = $filter_size - 1; $i >= 0; $i--) {
+            $html = $filters[$i]->postFilter($html, $config, $context);
+        }
+
+        $html = HTMLPurifier_Encoder::convertFromUTF8($html, $config, $context);
+        $this->context =& $context;
+        return $html;
+    }
+
+    /**
+     * Filters an array of HTML snippets
+     *
+     * @param string[] $array_of_html Array of html snippets
+     * @param HTMLPurifier_Config $config Optional config object for this operation.
+     *                See HTMLPurifier::purify() for more details.
+     *
+     * @return string[] Array of purified HTML
+     */
+    public function purifyArray($array_of_html, $config = null)
+    {
+        $context_array = array();
+        $array = array();
+        foreach($array_of_html as $key=>$value){
+            if (is_array($value)) {
+                $array[$key] = $this->purifyArray($value, $config);
+            } else {
+                $array[$key] = $this->purify($value, $config);
+            }
+            $context_array[$key] = $this->context;
+        }
+        $this->context = $context_array;
+        return $array;
+    }
+
+    /**
+     * Singleton for enforcing just one HTML Purifier in your system
+     *
+     * @param HTMLPurifier|HTMLPurifier_Config $prototype Optional prototype
+     *                   HTMLPurifier instance to overload singleton with,
+     *                   or HTMLPurifier_Config instance to configure the
+     *                   generated version with.
+     *
+     * @return HTMLPurifier
+     */
+    public static function instance($prototype = null)
+    {
+        if (!self::$instance || $prototype) {
+            if ($prototype instanceof HTMLPurifier) {
+                self::$instance = $prototype;
+            } elseif ($prototype) {
+                self::$instance = new HTMLPurifier($prototype);
+            } else {
+                self::$instance = new HTMLPurifier();
+            }
+        }
+        return self::$instance;
+    }
+
+    /**
+     * Singleton for enforcing just one HTML Purifier in your system
+     *
+     * @param HTMLPurifier|HTMLPurifier_Config $prototype Optional prototype
+     *                   HTMLPurifier instance to overload singleton with,
+     *                   or HTMLPurifier_Config instance to configure the
+     *                   generated version with.
+     *
+     * @return HTMLPurifier
+     * @note Backwards compatibility, see instance()
+     */
+    public static function getInstance($prototype = null)
+    {
+        return HTMLPurifier::instance($prototype);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier.safe-includes.php

@@ -0,0 +1,230 @@
+<?php
+
+/**
+ * @file
+ * This file was auto-generated by generate-includes.php and includes all of
+ * the core files required by HTML Purifier. This is a convenience stub that
+ * includes all files using dirname(__FILE__) and require_once. PLEASE DO NOT
+ * EDIT THIS FILE, changes will be overwritten the next time the script is run.
+ *
+ * Changes to include_path are not necessary.
+ */
+
+$__dir = dirname(__FILE__);
+
+require_once $__dir . '/HTMLPurifier.php';
+require_once $__dir . '/HTMLPurifier/Arborize.php';
+require_once $__dir . '/HTMLPurifier/AttrCollections.php';
+require_once $__dir . '/HTMLPurifier/AttrDef.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform.php';
+require_once $__dir . '/HTMLPurifier/AttrTypes.php';
+require_once $__dir . '/HTMLPurifier/AttrValidator.php';
+require_once $__dir . '/HTMLPurifier/Bootstrap.php';
+require_once $__dir . '/HTMLPurifier/Definition.php';
+require_once $__dir . '/HTMLPurifier/CSSDefinition.php';
+require_once $__dir . '/HTMLPurifier/ChildDef.php';
+require_once $__dir . '/HTMLPurifier/Config.php';
+require_once $__dir . '/HTMLPurifier/ConfigSchema.php';
+require_once $__dir . '/HTMLPurifier/ContentSets.php';
+require_once $__dir . '/HTMLPurifier/Context.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCacheFactory.php';
+require_once $__dir . '/HTMLPurifier/Doctype.php';
+require_once $__dir . '/HTMLPurifier/DoctypeRegistry.php';
+require_once $__dir . '/HTMLPurifier/ElementDef.php';
+require_once $__dir . '/HTMLPurifier/Encoder.php';
+require_once $__dir . '/HTMLPurifier/EntityLookup.php';
+require_once $__dir . '/HTMLPurifier/EntityParser.php';
+require_once $__dir . '/HTMLPurifier/ErrorCollector.php';
+require_once $__dir . '/HTMLPurifier/ErrorStruct.php';
+require_once $__dir . '/HTMLPurifier/Exception.php';
+require_once $__dir . '/HTMLPurifier/Filter.php';
+require_once $__dir . '/HTMLPurifier/Generator.php';
+require_once $__dir . '/HTMLPurifier/HTMLDefinition.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule.php';
+require_once $__dir . '/HTMLPurifier/HTMLModuleManager.php';
+require_once $__dir . '/HTMLPurifier/IDAccumulator.php';
+require_once $__dir . '/HTMLPurifier/Injector.php';
+require_once $__dir . '/HTMLPurifier/Language.php';
+require_once $__dir . '/HTMLPurifier/LanguageFactory.php';
+require_once $__dir . '/HTMLPurifier/Length.php';
+require_once $__dir . '/HTMLPurifier/Lexer.php';
+require_once $__dir . '/HTMLPurifier/Node.php';
+require_once $__dir . '/HTMLPurifier/PercentEncoder.php';
+require_once $__dir . '/HTMLPurifier/PropertyList.php';
+require_once $__dir . '/HTMLPurifier/PropertyListIterator.php';
+require_once $__dir . '/HTMLPurifier/Queue.php';
+require_once $__dir . '/HTMLPurifier/Strategy.php';
+require_once $__dir . '/HTMLPurifier/StringHash.php';
+require_once $__dir . '/HTMLPurifier/StringHashParser.php';
+require_once $__dir . '/HTMLPurifier/TagTransform.php';
+require_once $__dir . '/HTMLPurifier/Token.php';
+require_once $__dir . '/HTMLPurifier/TokenFactory.php';
+require_once $__dir . '/HTMLPurifier/URI.php';
+require_once $__dir . '/HTMLPurifier/URIDefinition.php';
+require_once $__dir . '/HTMLPurifier/URIFilter.php';
+require_once $__dir . '/HTMLPurifier/URIParser.php';
+require_once $__dir . '/HTMLPurifier/URIScheme.php';
+require_once $__dir . '/HTMLPurifier/URISchemeRegistry.php';
+require_once $__dir . '/HTMLPurifier/UnitConverter.php';
+require_once $__dir . '/HTMLPurifier/VarParser.php';
+require_once $__dir . '/HTMLPurifier/VarParserException.php';
+require_once $__dir . '/HTMLPurifier/Zipper.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Clone.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Enum.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Integer.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Lang.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Switch.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Text.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Number.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/AlphaValue.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Background.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Border.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Color.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Composite.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Filter.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Font.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/FontFamily.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Ident.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Length.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/ListStyle.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Multiple.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Percentage.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Ratio.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/TextDecoration.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/URI.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Bool.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Nmtokens.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Class.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Color.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/ContentEditable.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/FrameTarget.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/ID.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Pixels.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Length.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/LinkTypes.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/MultiLength.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/Email.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/Host.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/IPv4.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/IPv6.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Background.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/BdoDir.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/BgColor.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/BoolToCSS.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Border.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/EnumToCSS.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/ImgRequired.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/ImgSpace.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Input.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Lang.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Length.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Name.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/NameSync.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Nofollow.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/SafeEmbed.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/SafeObject.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/SafeParam.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/ScriptRequired.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/TargetBlank.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/TargetNoopener.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/TargetNoreferrer.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Textarea.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Chameleon.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Custom.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Empty.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/List.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Required.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Optional.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/StrictBlockquote.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Table.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Null.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Serializer.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator/Cleanup.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator/Memory.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Bdo.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/CommonAttributes.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Edit.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Forms.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Hypertext.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Iframe.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Image.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Legacy.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/List.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Name.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Nofollow.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/NonXMLCommonAttributes.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Object.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Presentation.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Proprietary.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Ruby.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/SafeEmbed.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/SafeObject.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/SafeScripting.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Scripting.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/StyleAttribute.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tables.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Target.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/TargetBlank.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/TargetNoopener.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/TargetNoreferrer.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Text.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/XMLCommonAttributes.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Name.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Proprietary.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Strict.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Transitional.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/XHTML.php';
+require_once $__dir . '/HTMLPurifier/Injector/AutoParagraph.php';
+require_once $__dir . '/HTMLPurifier/Injector/DisplayLinkURI.php';
+require_once $__dir . '/HTMLPurifier/Injector/Linkify.php';
+require_once $__dir . '/HTMLPurifier/Injector/PurifierLinkify.php';
+require_once $__dir . '/HTMLPurifier/Injector/RemoveEmpty.php';
+require_once $__dir . '/HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php';
+require_once $__dir . '/HTMLPurifier/Injector/SafeObject.php';
+require_once $__dir . '/HTMLPurifier/Lexer/DOMLex.php';
+require_once $__dir . '/HTMLPurifier/Lexer/DirectLex.php';
+require_once $__dir . '/HTMLPurifier/Node/Comment.php';
+require_once $__dir . '/HTMLPurifier/Node/Element.php';
+require_once $__dir . '/HTMLPurifier/Node/Text.php';
+require_once $__dir . '/HTMLPurifier/Strategy/Composite.php';
+require_once $__dir . '/HTMLPurifier/Strategy/Core.php';
+require_once $__dir . '/HTMLPurifier/Strategy/FixNesting.php';
+require_once $__dir . '/HTMLPurifier/Strategy/MakeWellFormed.php';
+require_once $__dir . '/HTMLPurifier/Strategy/RemoveForeignElements.php';
+require_once $__dir . '/HTMLPurifier/Strategy/ValidateAttributes.php';
+require_once $__dir . '/HTMLPurifier/TagTransform/Font.php';
+require_once $__dir . '/HTMLPurifier/TagTransform/Simple.php';
+require_once $__dir . '/HTMLPurifier/Token/Comment.php';
+require_once $__dir . '/HTMLPurifier/Token/Tag.php';
+require_once $__dir . '/HTMLPurifier/Token/Empty.php';
+require_once $__dir . '/HTMLPurifier/Token/End.php';
+require_once $__dir . '/HTMLPurifier/Token/Start.php';
+require_once $__dir . '/HTMLPurifier/Token/Text.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/DisableExternal.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/DisableExternalResources.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/DisableResources.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/HostBlacklist.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/MakeAbsolute.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/Munge.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/SafeIframe.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/data.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/file.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/ftp.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/http.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/https.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/mailto.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/news.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/nntp.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/tel.php';
+require_once $__dir . '/HTMLPurifier/VarParser/Flexible.php';
+require_once $__dir . '/HTMLPurifier/VarParser/Native.php';

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Arborize.php

@@ -0,0 +1,71 @@
+<?php
+
+/**
+ * Converts a stream of HTMLPurifier_Token into an HTMLPurifier_Node,
+ * and back again.
+ *
+ * @note This transformation is not an equivalence.  We mutate the input
+ * token stream to make it so; see all [MUT] markers in code.
+ */
+class HTMLPurifier_Arborize
+{
+    public static function arborize($tokens, $config, $context) {
+        $definition = $config->getHTMLDefinition();
+        $parent = new HTMLPurifier_Token_Start($definition->info_parent);
+        $stack = array($parent->toNode());
+        foreach ($tokens as $token) {
+            $token->skip = null; // [MUT]
+            $token->carryover = null; // [MUT]
+            if ($token instanceof HTMLPurifier_Token_End) {
+                $token->start = null; // [MUT]
+                $r = array_pop($stack);
+                //assert($r->name === $token->name);
+                //assert(empty($token->attr));
+                $r->endCol = $token->col;
+                $r->endLine = $token->line;
+                $r->endArmor = $token->armor;
+                continue;
+            }
+            $node = $token->toNode();
+            $stack[count($stack)-1]->children[] = $node;
+            if ($token instanceof HTMLPurifier_Token_Start) {
+                $stack[] = $node;
+            }
+        }
+        //assert(count($stack) == 1);
+        return $stack[0];
+    }
+
+    public static function flatten($node, $config, $context) {
+        $level = 0;
+        $nodes = array($level => new HTMLPurifier_Queue(array($node)));
+        $closingTokens = array();
+        $tokens = array();
+        do {
+            while (!$nodes[$level]->isEmpty()) {
+                $node = $nodes[$level]->shift(); // FIFO
+                list($start, $end) = $node->toTokenPair();
+                if ($level > 0) {
+                    $tokens[] = $start;
+                }
+                if ($end !== NULL) {
+                    $closingTokens[$level][] = $end;
+                }
+                if ($node instanceof HTMLPurifier_Node_Element) {
+                    $level++;
+                    $nodes[$level] = new HTMLPurifier_Queue();
+                    foreach ($node->children as $childNode) {
+                        $nodes[$level]->push($childNode);
+                    }
+                }
+            }
+            $level--;
+            if ($level && isset($closingTokens[$level])) {
+                while ($token = array_pop($closingTokens[$level])) {
+                    $tokens[] = $token;
+                }
+            }
+        } while ($level > 0);
+        return $tokens;
+    }
+}

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrCollections.php

@@ -0,0 +1,148 @@
+<?php
+
+/**
+ * Defines common attribute collections that modules reference
+ */
+
+class HTMLPurifier_AttrCollections
+{
+
+    /**
+     * Associative array of attribute collections, indexed by name.
+     * @type array
+     */
+    public $info = array();
+
+    /**
+     * Performs all expansions on internal data for use by other inclusions
+     * It also collects all attribute collection extensions from
+     * modules
+     * @param HTMLPurifier_AttrTypes $attr_types HTMLPurifier_AttrTypes instance
+     * @param HTMLPurifier_HTMLModule[] $modules Hash array of HTMLPurifier_HTMLModule members
+     */
+    public function __construct($attr_types, $modules)
+    {
+        $this->doConstruct($attr_types, $modules);
+    }
+
+    public function doConstruct($attr_types, $modules)
+    {
+        // load extensions from the modules
+        foreach ($modules as $module) {
+            foreach ($module->attr_collections as $coll_i => $coll) {
+                if (!isset($this->info[$coll_i])) {
+                    $this->info[$coll_i] = array();
+                }
+                foreach ($coll as $attr_i => $attr) {
+                    if ($attr_i === 0 && isset($this->info[$coll_i][$attr_i])) {
+                        // merge in includes
+                        $this->info[$coll_i][$attr_i] = array_merge(
+                            $this->info[$coll_i][$attr_i],
+                            $attr
+                        );
+                        continue;
+                    }
+                    $this->info[$coll_i][$attr_i] = $attr;
+                }
+            }
+        }
+        // perform internal expansions and inclusions
+        foreach ($this->info as $name => $attr) {
+            // merge attribute collections that include others
+            $this->performInclusions($this->info[$name]);
+            // replace string identifiers with actual attribute objects
+            $this->expandIdentifiers($this->info[$name], $attr_types);
+        }
+    }
+
+    /**
+     * Takes a reference to an attribute associative array and performs
+     * all inclusions specified by the zero index.
+     * @param array &$attr Reference to attribute array
+     */
+    public function performInclusions(&$attr)
+    {
+        if (!isset($attr[0])) {
+            return;
+        }
+        $merge = $attr[0];
+        $seen  = array(); // recursion guard
+        // loop through all the inclusions
+        for ($i = 0; isset($merge[$i]); $i++) {
+            if (isset($seen[$merge[$i]])) {
+                continue;
+            }
+            $seen[$merge[$i]] = true;
+            // foreach attribute of the inclusion, copy it over
+            if (!isset($this->info[$merge[$i]])) {
+                continue;
+            }
+            foreach ($this->info[$merge[$i]] as $key => $value) {
+                if (isset($attr[$key])) {
+                    continue;
+                } // also catches more inclusions
+                $attr[$key] = $value;
+            }
+            if (isset($this->info[$merge[$i]][0])) {
+                // recursion
+                $merge = array_merge($merge, $this->info[$merge[$i]][0]);
+            }
+        }
+        unset($attr[0]);
+    }
+
+    /**
+     * Expands all string identifiers in an attribute array by replacing
+     * them with the appropriate values inside HTMLPurifier_AttrTypes
+     * @param array &$attr Reference to attribute array
+     * @param HTMLPurifier_AttrTypes $attr_types HTMLPurifier_AttrTypes instance
+     */
+    public function expandIdentifiers(&$attr, $attr_types)
+    {
+        // because foreach will process new elements we add, make sure we
+        // skip duplicates
+        $processed = array();
+
+        foreach ($attr as $def_i => $def) {
+            // skip inclusions
+            if ($def_i === 0) {
+                continue;
+            }
+
+            if (isset($processed[$def_i])) {
+                continue;
+            }
+
+            // determine whether or not attribute is required
+            if ($required = (strpos($def_i, '*') !== false)) {
+                // rename the definition
+                unset($attr[$def_i]);
+                $def_i = trim($def_i, '*');
+                $attr[$def_i] = $def;
+            }
+
+            $processed[$def_i] = true;
+
+            // if we've already got a literal object, move on
+            if (is_object($def)) {
+                // preserve previous required
+                $attr[$def_i]->required = ($required || $attr[$def_i]->required);
+                continue;
+            }
+
+            if ($def === false) {
+                unset($attr[$def_i]);
+                continue;
+            }
+
+            if ($t = $attr_types->get($def)) {
+                $attr[$def_i] = $t;
+                $attr[$def_i]->required = $required;
+            } else {
+                unset($attr[$def_i]);
+            }
+        }
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef.php

@@ -0,0 +1,144 @@
+<?php
+
+/**
+ * Base class for all validating attribute definitions.
+ *
+ * This family of classes forms the core for not only HTML attribute validation,
+ * but also any sort of string that needs to be validated or cleaned (which
+ * means CSS properties and composite definitions are defined here too).
+ * Besides defining (through code) what precisely makes the string valid,
+ * subclasses are also responsible for cleaning the code if possible.
+ */
+
+abstract class HTMLPurifier_AttrDef
+{
+
+    /**
+     * Tells us whether or not an HTML attribute is minimized.
+     * Has no meaning in other contexts.
+     * @type bool
+     */
+    public $minimized = false;
+
+    /**
+     * Tells us whether or not an HTML attribute is required.
+     * Has no meaning in other contexts
+     * @type bool
+     */
+    public $required = false;
+
+    /**
+     * Validates and cleans passed string according to a definition.
+     *
+     * @param string $string String to be validated and cleaned.
+     * @param HTMLPurifier_Config $config Mandatory HTMLPurifier_Config object.
+     * @param HTMLPurifier_Context $context Mandatory HTMLPurifier_Context object.
+     */
+    abstract public function validate($string, $config, $context);
+
+    /**
+     * Convenience method that parses a string as if it were CDATA.
+     *
+     * This method process a string in the manner specified at
+     * <http://www.w3.org/TR/html4/types.html#h-6.2> by removing
+     * leading and trailing whitespace, ignoring line feeds, and replacing
+     * carriage returns and tabs with spaces.  While most useful for HTML
+     * attributes specified as CDATA, it can also be applied to most CSS
+     * values.
+     *
+     * @note This method is not entirely standards compliant, as trim() removes
+     *       more types of whitespace than specified in the spec. In practice,
+     *       this is rarely a problem, as those extra characters usually have
+     *       already been removed by HTMLPurifier_Encoder.
+     *
+     * @warning This processing is inconsistent with XML's whitespace handling
+     *          as specified by section 3.3.3 and referenced XHTML 1.0 section
+     *          4.7.  However, note that we are NOT necessarily
+     *          parsing XML, thus, this behavior may still be correct. We
+     *          assume that newlines have been normalized.
+     */
+    public function parseCDATA($string)
+    {
+        $string = trim($string);
+        $string = str_replace(array("\n", "\t", "\r"), ' ', $string);
+        return $string;
+    }
+
+    /**
+     * Factory method for creating this class from a string.
+     * @param string $string String construction info
+     * @return HTMLPurifier_AttrDef Created AttrDef object corresponding to $string
+     */
+    public function make($string)
+    {
+        // default implementation, return a flyweight of this object.
+        // If $string has an effect on the returned object (i.e. you
+        // need to overload this method), it is best
+        // to clone or instantiate new copies. (Instantiation is safer.)
+        return $this;
+    }
+
+    /**
+     * Removes spaces from rgb(0, 0, 0) so that shorthand CSS properties work
+     * properly. THIS IS A HACK!
+     * @param string $string a CSS colour definition
+     * @return string
+     */
+    protected function mungeRgb($string)
+    {
+        $p = '\s*(\d+(\.\d+)?([%]?))\s*';
+
+        if (preg_match('/(rgba|hsla)\(/', $string)) {
+            return preg_replace('/(rgba|hsla)\('.$p.','.$p.','.$p.','.$p.'\)/', '\1(\2,\5,\8,\11)', $string);
+        }
+
+        return preg_replace('/(rgb|hsl)\('.$p.','.$p.','.$p.'\)/', '\1(\2,\5,\8)', $string);
+    }
+
+    /**
+     * Parses a possibly escaped CSS string and returns the "pure"
+     * version of it.
+     */
+    protected function expandCSSEscape($string)
+    {
+        // flexibly parse it
+        $ret = '';
+        for ($i = 0, $c = strlen($string); $i < $c; $i++) {
+            if ($string[$i] === '\\') {
+                $i++;
+                if ($i >= $c) {
+                    $ret .= '\\';
+                    break;
+                }
+                if (ctype_xdigit($string[$i])) {
+                    $code = $string[$i];
+                    for ($a = 1, $i++; $i < $c && $a < 6; $i++, $a++) {
+                        if (!ctype_xdigit($string[$i])) {
+                            break;
+                        }
+                        $code .= $string[$i];
+                    }
+                    // We have to be extremely careful when adding
+                    // new characters, to make sure we're not breaking
+                    // the encoding.
+                    $char = HTMLPurifier_Encoder::unichr(hexdec($code));
+                    if (HTMLPurifier_Encoder::cleanUTF8($char) === '') {
+                        continue;
+                    }
+                    $ret .= $char;
+                    if ($i < $c && trim($string[$i]) !== '') {
+                        $i--;
+                    }
+                    continue;
+                }
+                if ($string[$i] === "\n") {
+                    continue;
+                }
+            }
+            $ret .= $string[$i];
+        }
+        return $ret;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS.php

@@ -0,0 +1,140 @@
+<?php
+
+/**
+ * Validates the HTML attribute style, otherwise known as CSS.
+ * @note We don't implement the whole CSS specification, so it might be
+ *       difficult to reuse this component in the context of validating
+ *       actual stylesheet declarations.
+ * @note If we were really serious about validating the CSS, we would
+ *       tokenize the styles and then parse the tokens. Obviously, we
+ *       are not doing that. Doing that could seriously harm performance,
+ *       but would make these components a lot more viable for a CSS
+ *       filtering solution.
+ */
+class HTMLPurifier_AttrDef_CSS extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @param string $css
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($css, $config, $context)
+    {
+        $css = $this->parseCDATA($css);
+
+        $definition = $config->getCSSDefinition();
+        $allow_duplicates = $config->get("CSS.AllowDuplicates");
+
+        $universal_attrdef = new HTMLPurifier_AttrDef_Enum(
+            array(
+                'initial',
+                'inherit',
+                'unset',
+            )
+        );
+
+        // According to the CSS2.1 spec, the places where a
+        // non-delimiting semicolon can appear are in strings
+        // escape sequences.   So here is some dumb hack to
+        // handle quotes.
+        $len = strlen($css);
+        $accum = "";
+        $declarations = array();
+        $quoted = false;
+        for ($i = 0; $i < $len; $i++) {
+            $c = strcspn($css, ";'\"", $i);
+            $accum .= substr($css, $i, $c);
+            $i += $c;
+            if ($i == $len) break;
+            $d = $css[$i];
+            if ($quoted) {
+                $accum .= $d;
+                if ($d == $quoted) {
+                    $quoted = false;
+                }
+            } else {
+                if ($d == ";") {
+                    $declarations[] = $accum;
+                    $accum = "";
+                } else {
+                    $accum .= $d;
+                    $quoted = $d;
+                }
+            }
+        }
+        if ($accum != "") $declarations[] = $accum;
+
+        $propvalues = array();
+        $new_declarations = '';
+
+        /**
+         * Name of the current CSS property being validated.
+         */
+        $property = false;
+        $context->register('CurrentCSSProperty', $property);
+
+        foreach ($declarations as $declaration) {
+            if (!$declaration) {
+                continue;
+            }
+            if (!strpos($declaration, ':')) {
+                continue;
+            }
+            list($property, $value) = explode(':', $declaration, 2);
+            $property = trim($property);
+            $value = trim($value);
+            $ok = false;
+            do {
+                if (isset($definition->info[$property])) {
+                    $ok = true;
+                    break;
+                }
+                if (ctype_lower($property)) {
+                    break;
+                }
+                $property = strtolower($property);
+                if (isset($definition->info[$property])) {
+                    $ok = true;
+                    break;
+                }
+            } while (0);
+            if (!$ok) {
+                continue;
+            }
+            $result = $universal_attrdef->validate($value, $config, $context);
+            if ($result === false) {
+                $result = $definition->info[$property]->validate(
+                    $value,
+                    $config,
+                    $context
+                );
+            }
+            if ($result === false) {
+                continue;
+            }
+            if ($allow_duplicates) {
+                $new_declarations .= "$property:$result;";
+            } else {
+                $propvalues[$property] = $result;
+            }
+        }
+
+        $context->destroy('CurrentCSSProperty');
+
+        // procedure does not write the new CSS simultaneously, so it's
+        // slightly inefficient, but it's the only way of getting rid of
+        // duplicates. Perhaps config to optimize it, but not now.
+
+        foreach ($propvalues as $prop => $value) {
+            $new_declarations .= "$prop:$value;";
+        }
+
+        return $new_declarations ? $new_declarations : false;
+
+    }
+
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/AlphaValue.php

@@ -0,0 +1,34 @@
+<?php
+
+class HTMLPurifier_AttrDef_CSS_AlphaValue extends HTMLPurifier_AttrDef_CSS_Number
+{
+
+    public function __construct()
+    {
+        parent::__construct(false); // opacity is non-negative, but we will clamp it
+    }
+
+    /**
+     * @param string $number
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return string
+     */
+    public function validate($number, $config, $context)
+    {
+        $result = parent::validate($number, $config, $context);
+        if ($result === false) {
+            return $result;
+        }
+        $float = (float)$result;
+        if ($float < 0.0) {
+            $result = '0';
+        }
+        if ($float > 1.0) {
+            $result = '1';
+        }
+        return $result;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Background.php

@@ -0,0 +1,113 @@
+<?php
+
+/**
+ * Validates shorthand CSS property background.
+ * @warning Does not support url tokens that have internal spaces.
+ */
+class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * Local copy of component validators.
+     * @type HTMLPurifier_AttrDef[]
+     * @note See HTMLPurifier_AttrDef_Font::$info for a similar impl.
+     */
+    protected $info;
+
+    /**
+     * @param HTMLPurifier_Config $config
+     */
+    public function __construct($config)
+    {
+        $def = $config->getCSSDefinition();
+        $this->info['background-color'] = $def->info['background-color'];
+        $this->info['background-image'] = $def->info['background-image'];
+        $this->info['background-repeat'] = $def->info['background-repeat'];
+        $this->info['background-attachment'] = $def->info['background-attachment'];
+        $this->info['background-position'] = $def->info['background-position'];
+        $this->info['background-size'] = $def->info['background-size'];
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        // regular pre-processing
+        $string = $this->parseCDATA($string);
+        if ($string === '') {
+            return false;
+        }
+
+        // munge rgb() decl if necessary
+        $string = $this->mungeRgb($string);
+
+        // assumes URI doesn't have spaces in it
+        $bits = explode(' ', $string); // bits to process
+
+        $caught = array();
+        $caught['color'] = false;
+        $caught['image'] = false;
+        $caught['repeat'] = false;
+        $caught['attachment'] = false;
+        $caught['position'] = false;
+        $caught['size'] = false;
+
+        $i = 0; // number of catches
+
+        foreach ($bits as $bit) {
+            if ($bit === '') {
+                continue;
+            }
+            foreach ($caught as $key => $status) {
+                if ($key != 'position') {
+                    if ($status !== false) {
+                        continue;
+                    }
+                    $r = $this->info['background-' . $key]->validate($bit, $config, $context);
+                } else {
+                    $r = $bit;
+                }
+                if ($r === false) {
+                    continue;
+                }
+                if ($key == 'position') {
+                    if ($caught[$key] === false) {
+                        $caught[$key] = '';
+                    }
+                    $caught[$key] .= $r . ' ';
+                } else {
+                    $caught[$key] = $r;
+                }
+                $i++;
+                break;
+            }
+        }
+
+        if (!$i) {
+            return false;
+        }
+        if ($caught['position'] !== false) {
+            $caught['position'] = $this->info['background-position']->
+                validate($caught['position'], $config, $context);
+        }
+
+        $ret = array();
+        foreach ($caught as $value) {
+            if ($value === false) {
+                continue;
+            }
+            $ret[] = $value;
+        }
+
+        if (empty($ret)) {
+            return false;
+        }
+        return implode(' ', $ret);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php

@@ -0,0 +1,157 @@
+<?php
+
+/* W3C says:
+    [ // adjective and number must be in correct order, even if
+      // you could switch them without introducing ambiguity.
+      // some browsers support that syntax
+        [
+            <percentage> | <length> | left | center | right
+        ]
+        [
+            <percentage> | <length> | top | center | bottom
+        ]?
+    ] |
+    [ // this signifies that the vertical and horizontal adjectives
+      // can be arbitrarily ordered, however, there can only be two,
+      // one of each, or none at all
+        [
+            left | center | right
+        ] ||
+        [
+            top | center | bottom
+        ]
+    ]
+    top, left = 0%
+    center, (none) = 50%
+    bottom, right = 100%
+*/
+
+/* QuirksMode says:
+    keyword + length/percentage must be ordered correctly, as per W3C
+
+    Internet Explorer and Opera, however, support arbitrary ordering. We
+    should fix it up.
+
+    Minor issue though, not strictly necessary.
+*/
+
+// control freaks may appreciate the ability to convert these to
+// percentages or something, but it's not necessary
+
+/**
+ * Validates the value of background-position.
+ */
+class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @type HTMLPurifier_AttrDef_CSS_Length
+     */
+    protected $length;
+
+    /**
+     * @type HTMLPurifier_AttrDef_CSS_Percentage
+     */
+    protected $percentage;
+
+    public function __construct()
+    {
+        $this->length = new HTMLPurifier_AttrDef_CSS_Length();
+        $this->percentage = new HTMLPurifier_AttrDef_CSS_Percentage();
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = $this->parseCDATA($string);
+        $bits = explode(' ', $string);
+
+        $keywords = array();
+        $keywords['h'] = false; // left, right
+        $keywords['v'] = false; // top, bottom
+        $keywords['ch'] = false; // center (first word)
+        $keywords['cv'] = false; // center (second word)
+        $measures = array();
+
+        $i = 0;
+
+        $lookup = array(
+            'top' => 'v',
+            'bottom' => 'v',
+            'left' => 'h',
+            'right' => 'h',
+            'center' => 'c'
+        );
+
+        foreach ($bits as $bit) {
+            if ($bit === '') {
+                continue;
+            }
+
+            // test for keyword
+            $lbit = ctype_lower($bit) ? $bit : strtolower($bit);
+            if (isset($lookup[$lbit])) {
+                $status = $lookup[$lbit];
+                if ($status == 'c') {
+                    if ($i == 0) {
+                        $status = 'ch';
+                    } else {
+                        $status = 'cv';
+                    }
+                }
+                $keywords[$status] = $lbit;
+                $i++;
+            }
+
+            // test for length
+            $r = $this->length->validate($bit, $config, $context);
+            if ($r !== false) {
+                $measures[] = $r;
+                $i++;
+            }
+
+            // test for percentage
+            $r = $this->percentage->validate($bit, $config, $context);
+            if ($r !== false) {
+                $measures[] = $r;
+                $i++;
+            }
+        }
+
+        if (!$i) {
+            return false;
+        } // no valid values were caught
+
+        $ret = array();
+
+        // first keyword
+        if ($keywords['h']) {
+            $ret[] = $keywords['h'];
+        } elseif ($keywords['ch']) {
+            $ret[] = $keywords['ch'];
+            $keywords['cv'] = false; // prevent re-use: center = center center
+        } elseif (count($measures)) {
+            $ret[] = array_shift($measures);
+        }
+
+        if ($keywords['v']) {
+            $ret[] = $keywords['v'];
+        } elseif ($keywords['cv']) {
+            $ret[] = $keywords['cv'];
+        } elseif (count($measures)) {
+            $ret[] = array_shift($measures);
+        }
+
+        if (empty($ret)) {
+            return false;
+        }
+        return implode(' ', $ret);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Border.php

@@ -0,0 +1,56 @@
+<?php
+
+/**
+ * Validates the border property as defined by CSS.
+ */
+class HTMLPurifier_AttrDef_CSS_Border extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * Local copy of properties this property is shorthand for.
+     * @type HTMLPurifier_AttrDef[]
+     */
+    protected $info = array();
+
+    /**
+     * @param HTMLPurifier_Config $config
+     */
+    public function __construct($config)
+    {
+        $def = $config->getCSSDefinition();
+        $this->info['border-width'] = $def->info['border-width'];
+        $this->info['border-style'] = $def->info['border-style'];
+        $this->info['border-top-color'] = $def->info['border-top-color'];
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = $this->parseCDATA($string);
+        $string = $this->mungeRgb($string);
+        $bits = explode(' ', $string);
+        $done = array(); // segments we've finished
+        $ret = ''; // return value
+        foreach ($bits as $bit) {
+            foreach ($this->info as $propname => $validator) {
+                if (isset($done[$propname])) {
+                    continue;
+                }
+                $r = $validator->validate($bit, $config, $context);
+                if ($r !== false) {
+                    $ret .= $r . ' ';
+                    $done[$propname] = true;
+                    break;
+                }
+            }
+        }
+        return rtrim($ret);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Color.php

@@ -0,0 +1,161 @@
+<?php
+
+/**
+ * Validates Color as defined by CSS.
+ */
+class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @type HTMLPurifier_AttrDef_CSS_AlphaValue
+     */
+    protected $alpha;
+
+    public function __construct()
+    {
+        $this->alpha = new HTMLPurifier_AttrDef_CSS_AlphaValue();
+    }
+
+    /**
+     * @param string $color
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($color, $config, $context)
+    {
+        static $colors = null;
+        if ($colors === null) {
+            $colors = $config->get('Core.ColorKeywords');
+        }
+
+        $color = trim($color);
+        if ($color === '') {
+            return false;
+        }
+
+        $lower = strtolower($color);
+        if (isset($colors[$lower])) {
+            return $colors[$lower];
+        }
+
+        if (preg_match('#(rgb|rgba|hsl|hsla)\(#', $color, $matches) === 1) {
+            $length = strlen($color);
+            if (strpos($color, ')') !== $length - 1) {
+                return false;
+            }
+
+            // get used function : rgb, rgba, hsl or hsla
+            $function = $matches[1];
+
+            $parameters_size = 3;
+            $alpha_channel = false;
+            if (substr($function, -1) === 'a') {
+                $parameters_size = 4;
+                $alpha_channel = true;
+            }
+
+            /*
+             * Allowed types for values :
+             * parameter_position => [type => max_value]
+             */
+            $allowed_types = array(
+                1 => array('percentage' => 100, 'integer' => 255),
+                2 => array('percentage' => 100, 'integer' => 255),
+                3 => array('percentage' => 100, 'integer' => 255),
+            );
+            $allow_different_types = false;
+
+            if (strpos($function, 'hsl') !== false) {
+                $allowed_types = array(
+                    1 => array('integer' => 360),
+                    2 => array('percentage' => 100),
+                    3 => array('percentage' => 100),
+                );
+                $allow_different_types = true;
+            }
+
+            $values = trim(str_replace($function, '', $color), ' ()');
+
+            $parts = explode(',', $values);
+            if (count($parts) !== $parameters_size) {
+                return false;
+            }
+
+            $type = false;
+            $new_parts = array();
+            $i = 0;
+
+            foreach ($parts as $part) {
+                $i++;
+                $part = trim($part);
+
+                if ($part === '') {
+                    return false;
+                }
+
+                // different check for alpha channel
+                if ($alpha_channel === true && $i === count($parts)) {
+                    $result = $this->alpha->validate($part, $config, $context);
+
+                    if ($result === false) {
+                        return false;
+                    }
+
+                    $new_parts[] = (string)$result;
+                    continue;
+                }
+
+                if (substr($part, -1) === '%') {
+                    $current_type = 'percentage';
+                } else {
+                    $current_type = 'integer';
+                }
+
+                if (!array_key_exists($current_type, $allowed_types[$i])) {
+                    return false;
+                }
+
+                if (!$type) {
+                    $type = $current_type;
+                }
+
+                if ($allow_different_types === false && $type != $current_type) {
+                    return false;
+                }
+
+                $max_value = $allowed_types[$i][$current_type];
+
+                if ($current_type == 'integer') {
+                    // Return value between range 0 -> $max_value
+                    $new_parts[] = (int)max(min($part, $max_value), 0);
+                } elseif ($current_type == 'percentage') {
+                    $new_parts[] = (float)max(min(rtrim($part, '%'), $max_value), 0) . '%';
+                }
+            }
+
+            $new_values = implode(',', $new_parts);
+
+            $color = $function . '(' . $new_values . ')';
+        } else {
+            // hexadecimal handling
+            if ($color[0] === '#') {
+                $hex = substr($color, 1);
+            } else {
+                $hex = $color;
+                $color = '#' . $color;
+            }
+            $length = strlen($hex);
+            if ($length !== 3 && $length !== 6) {
+                return false;
+            }
+            if (!ctype_xdigit($hex)) {
+                return false;
+            }
+        }
+        return $color;
+    }
+
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Composite.php

@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * Allows multiple validators to attempt to validate attribute.
+ *
+ * Composite is just what it sounds like: a composite of many validators.
+ * This means that multiple HTMLPurifier_AttrDef objects will have a whack
+ * at the string.  If one of them passes, that's what is returned.  This is
+ * especially useful for CSS values, which often are a choice between
+ * an enumerated set of predefined values or a flexible data type.
+ */
+class HTMLPurifier_AttrDef_CSS_Composite extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * List of objects that may process strings.
+     * @type HTMLPurifier_AttrDef[]
+     * @todo Make protected
+     */
+    public $defs;
+
+    /**
+     * @param HTMLPurifier_AttrDef[] $defs List of HTMLPurifier_AttrDef objects
+     */
+    public function __construct($defs)
+    {
+        $this->defs = $defs;
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        foreach ($this->defs as $i => $def) {
+            $result = $this->defs[$i]->validate($string, $config, $context);
+            if ($result !== false) {
+                return $result;
+            }
+        }
+        return false;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php

@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * Decorator which enables CSS properties to be disabled for specific elements.
+ */
+class HTMLPurifier_AttrDef_CSS_DenyElementDecorator extends HTMLPurifier_AttrDef
+{
+    /**
+     * @type HTMLPurifier_AttrDef
+     */
+    public $def;
+    /**
+     * @type string
+     */
+    public $element;
+
+    /**
+     * @param HTMLPurifier_AttrDef $def Definition to wrap
+     * @param string $element Element to deny
+     */
+    public function __construct($def, $element)
+    {
+        $this->def = $def;
+        $this->element = $element;
+    }
+
+    /**
+     * Checks if CurrentToken is set and equal to $this->element
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $token = $context->get('CurrentToken', true);
+        if ($token && $token->name == $this->element) {
+            return false;
+        }
+        return $this->def->validate($string, $config, $context);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Filter.php

@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * Microsoft's proprietary filter: CSS property
+ * @note Currently supports the alpha filter. In the future, this will
+ *       probably need an extensible framework
+ */
+class HTMLPurifier_AttrDef_CSS_Filter extends HTMLPurifier_AttrDef
+{
+    /**
+     * @type HTMLPurifier_AttrDef_Integer
+     */
+    protected $intValidator;
+
+    public function __construct()
+    {
+        $this->intValidator = new HTMLPurifier_AttrDef_Integer();
+    }
+
+    /**
+     * @param string $value
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($value, $config, $context)
+    {
+        $value = $this->parseCDATA($value);
+        if ($value === 'none') {
+            return $value;
+        }
+        // if we looped this we could support multiple filters
+        $function_length = strcspn($value, '(');
+        $function = trim(substr($value, 0, $function_length));
+        if ($function !== 'alpha' &&
+            $function !== 'Alpha' &&
+            $function !== 'progid:DXImageTransform.Microsoft.Alpha'
+        ) {
+            return false;
+        }
+        $cursor = $function_length + 1;
+        $parameters_length = strcspn($value, ')', $cursor);
+        $parameters = substr($value, $cursor, $parameters_length);
+        $params = explode(',', $parameters);
+        $ret_params = array();
+        $lookup = array();
+        foreach ($params as $param) {
+            list($key, $value) = explode('=', $param);
+            $key = trim($key);
+            $value = trim($value);
+            if (isset($lookup[$key])) {
+                continue;
+            }
+            if ($key !== 'opacity') {
+                continue;
+            }
+            $value = $this->intValidator->validate($value, $config, $context);
+            if ($value === false) {
+                continue;
+            }
+            $int = (int)$value;
+            if ($int > 100) {
+                $value = '100';
+            }
+            if ($int < 0) {
+                $value = '0';
+            }
+            $ret_params[] = "$key=$value";
+            $lookup[$key] = true;
+        }
+        $ret_parameters = implode(',', $ret_params);
+        $ret_function = "$function($ret_parameters)";
+        return $ret_function;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Font.php

@@ -0,0 +1,176 @@
+<?php
+
+/**
+ * Validates shorthand CSS property font.
+ */
+class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * Local copy of validators
+     * @type HTMLPurifier_AttrDef[]
+     * @note If we moved specific CSS property definitions to their own
+     *       classes instead of having them be assembled at run time by
+     *       CSSDefinition, this wouldn't be necessary.  We'd instantiate
+     *       our own copies.
+     */
+    protected $info = array();
+
+    /**
+     * @param HTMLPurifier_Config $config
+     */
+    public function __construct($config)
+    {
+        $def = $config->getCSSDefinition();
+        $this->info['font-style'] = $def->info['font-style'];
+        $this->info['font-variant'] = $def->info['font-variant'];
+        $this->info['font-weight'] = $def->info['font-weight'];
+        $this->info['font-size'] = $def->info['font-size'];
+        $this->info['line-height'] = $def->info['line-height'];
+        $this->info['font-family'] = $def->info['font-family'];
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        static $system_fonts = array(
+            'caption' => true,
+            'icon' => true,
+            'menu' => true,
+            'message-box' => true,
+            'small-caption' => true,
+            'status-bar' => true
+        );
+
+        // regular pre-processing
+        $string = $this->parseCDATA($string);
+        if ($string === '') {
+            return false;
+        }
+
+        // check if it's one of the keywords
+        $lowercase_string = strtolower($string);
+        if (isset($system_fonts[$lowercase_string])) {
+            return $lowercase_string;
+        }
+
+        $bits = explode(' ', $string); // bits to process
+        $stage = 0; // this indicates what we're looking for
+        $caught = array(); // which stage 0 properties have we caught?
+        $stage_1 = array('font-style', 'font-variant', 'font-weight');
+        $final = ''; // output
+
+        for ($i = 0, $size = count($bits); $i < $size; $i++) {
+            if ($bits[$i] === '') {
+                continue;
+            }
+            switch ($stage) {
+                case 0: // attempting to catch font-style, font-variant or font-weight
+                    foreach ($stage_1 as $validator_name) {
+                        if (isset($caught[$validator_name])) {
+                            continue;
+                        }
+                        $r = $this->info[$validator_name]->validate(
+                            $bits[$i],
+                            $config,
+                            $context
+                        );
+                        if ($r !== false) {
+                            $final .= $r . ' ';
+                            $caught[$validator_name] = true;
+                            break;
+                        }
+                    }
+                    // all three caught, continue on
+                    if (count($caught) >= 3) {
+                        $stage = 1;
+                    }
+                    if ($r !== false) {
+                        break;
+                    }
+                case 1: // attempting to catch font-size and perhaps line-height
+                    $found_slash = false;
+                    if (strpos($bits[$i], '/') !== false) {
+                        list($font_size, $line_height) =
+                            explode('/', $bits[$i]);
+                        if ($line_height === '') {
+                            // ooh, there's a space after the slash!
+                            $line_height = false;
+                            $found_slash = true;
+                        }
+                    } else {
+                        $font_size = $bits[$i];
+                        $line_height = false;
+                    }
+                    $r = $this->info['font-size']->validate(
+                        $font_size,
+                        $config,
+                        $context
+                    );
+                    if ($r !== false) {
+                        $final .= $r;
+                        // attempt to catch line-height
+                        if ($line_height === false) {
+                            // we need to scroll forward
+                            for ($j = $i + 1; $j < $size; $j++) {
+                                if ($bits[$j] === '') {
+                                    continue;
+                                }
+                                if ($bits[$j] === '/') {
+                                    if ($found_slash) {
+                                        return false;
+                                    } else {
+                                        $found_slash = true;
+                                        continue;
+                                    }
+                                }
+                                $line_height = $bits[$j];
+                                break;
+                            }
+                        } else {
+                            // slash already found
+                            $found_slash = true;
+                            $j = $i;
+                        }
+                        if ($found_slash) {
+                            $i = $j;
+                            $r = $this->info['line-height']->validate(
+                                $line_height,
+                                $config,
+                                $context
+                            );
+                            if ($r !== false) {
+                                $final .= '/' . $r;
+                            }
+                        }
+                        $final .= ' ';
+                        $stage = 2;
+                        break;
+                    }
+                    return false;
+                case 2: // attempting to catch font-family
+                    $font_family =
+                        implode(' ', array_slice($bits, $i, $size - $i));
+                    $r = $this->info['font-family']->validate(
+                        $font_family,
+                        $config,
+                        $context
+                    );
+                    if ($r !== false) {
+                        $final .= $r . ' ';
+                        // processing completed successfully
+                        return rtrim($final);
+                    }
+                    return false;
+            }
+        }
+        return false;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/FontFamily.php

@@ -0,0 +1,217 @@
+<?php
+
+/**
+ * Validates a font family list according to CSS spec
+ */
+class HTMLPurifier_AttrDef_CSS_FontFamily extends HTMLPurifier_AttrDef
+{
+
+    protected $mask = null;
+
+    public function __construct()
+    {
+        // Lowercase letters
+        $l = range('a', 'z');
+        // Uppercase letters
+        $u = range('A', 'Z');
+        // Digits
+        $d = range('0', '9');
+        // Special bytes used by UTF-8
+        $b = array_map('chr', range(0x80, 0xFF));
+        // All valid characters for the mask
+        $c = array_merge($l, $u, $d, $b);
+        // Concatenate all valid characters into a string 
+        // Use '_- ' as an initial value
+        $this->mask = array_reduce($c, function ($carry, $value) {
+            return $carry . $value;
+        }, '_- ');
+
+        /*
+            PHP's internal strcspn implementation is
+            O(length of string * length of mask), making it inefficient
+            for large masks.  However, it's still faster than
+            preg_match 8)
+          for (p = s1;;) {
+            spanp = s2;
+            do {
+              if (*spanp == c || p == s1_end) {
+                return p - s1;
+              }
+            } while (spanp++ < (s2_end - 1));
+            c = *++p;
+          }
+         */
+        // possible optimization: invert the mask.
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        static $generic_names = array(
+            'serif' => true,
+            'sans-serif' => true,
+            'monospace' => true,
+            'fantasy' => true,
+            'cursive' => true
+        );
+        $allowed_fonts = $config->get('CSS.AllowedFonts');
+
+        // assume that no font names contain commas in them
+        $fonts = explode(',', $string);
+        $final = '';
+        foreach ($fonts as $font) {
+            $font = trim($font);
+            if ($font === '') {
+                continue;
+            }
+            // match a generic name
+            if (isset($generic_names[$font])) {
+                if ($allowed_fonts === null || isset($allowed_fonts[$font])) {
+                    $final .= $font . ', ';
+                }
+                continue;
+            }
+            // match a quoted name
+            if ($font[0] === '"' || $font[0] === "'") {
+                $length = strlen($font);
+                if ($length <= 2) {
+                    continue;
+                }
+                $quote = $font[0];
+                if ($font[$length - 1] !== $quote) {
+                    continue;
+                }
+                $font = substr($font, 1, $length - 2);
+            }
+
+            $font = $this->expandCSSEscape($font);
+
+            // $font is a pure representation of the font name
+
+            if ($allowed_fonts !== null && !isset($allowed_fonts[$font])) {
+                continue;
+            }
+
+            if (ctype_alnum($font) && $font !== '') {
+                // very simple font, allow it in unharmed
+                $final .= $font . ', ';
+                continue;
+            }
+
+            // bugger out on whitespace.  form feed (0C) really
+            // shouldn't show up regardless
+            $font = str_replace(array("\n", "\t", "\r", "\x0C"), ' ', $font);
+
+            // Here, there are various classes of characters which need
+            // to be treated differently:
+            //  - Alphanumeric characters are essentially safe.  We
+            //    handled these above.
+            //  - Spaces require quoting, though most parsers will do
+            //    the right thing if there aren't any characters that
+            //    can be misinterpreted
+            //  - Dashes rarely occur, but they fairly unproblematic
+            //    for parsing/rendering purposes.
+            //  The above characters cover the majority of Western font
+            //  names.
+            //  - Arbitrary Unicode characters not in ASCII.  Because
+            //    most parsers give little thought to Unicode, treatment
+            //    of these codepoints is basically uniform, even for
+            //    punctuation-like codepoints.  These characters can
+            //    show up in non-Western pages and are supported by most
+            //    major browsers, for example: "ＭＳ 明朝" is a
+            //    legitimate font-name
+            //    <http://ja.wikipedia.org/wiki/MS_明朝>.  See
+            //    the CSS3 spec for more examples:
+            //    <http://www.w3.org/TR/2011/WD-css3-fonts-20110324/localizedfamilynames.png>
+            //    You can see live samples of these on the Internet:
+            //    <http://www.google.co.jp/search?q=font-family+ＭＳ+明朝|ゴシック>
+            //    However, most of these fonts have ASCII equivalents:
+            //    for example, 'MS Mincho', and it's considered
+            //    professional to use ASCII font names instead of
+            //    Unicode font names.  Thanks Takeshi Terada for
+            //    providing this information.
+            //  The following characters, to my knowledge, have not been
+            //  used to name font names.
+            //  - Single quote.  While theoretically you might find a
+            //    font name that has a single quote in its name (serving
+            //    as an apostrophe, e.g. Dave's Scribble), I haven't
+            //    been able to find any actual examples of this.
+            //    Internet Explorer's cssText translation (which I
+            //    believe is invoked by innerHTML) normalizes any
+            //    quoting to single quotes, and fails to escape single
+            //    quotes.  (Note that this is not IE's behavior for all
+            //    CSS properties, just some sort of special casing for
+            //    font-family).  So a single quote *cannot* be used
+            //    safely in the font-family context if there will be an
+            //    innerHTML/cssText translation.  Note that Firefox 3.x
+            //    does this too.
+            //  - Double quote.  In IE, these get normalized to
+            //    single-quotes, no matter what the encoding.  (Fun
+            //    fact, in IE8, the 'content' CSS property gained
+            //    support, where they special cased to preserve encoded
+            //    double quotes, but still translate unadorned double
+            //    quotes into single quotes.)  So, because their
+            //    fixpoint behavior is identical to single quotes, they
+            //    cannot be allowed either.  Firefox 3.x displays
+            //    single-quote style behavior.
+            //  - Backslashes are reduced by one (so \\ -> \) every
+            //    iteration, so they cannot be used safely.  This shows
+            //    up in IE7, IE8 and FF3
+            //  - Semicolons, commas and backticks are handled properly.
+            //  - The rest of the ASCII punctuation is handled properly.
+            // We haven't checked what browsers do to unadorned
+            // versions, but this is not important as long as the
+            // browser doesn't /remove/ surrounding quotes (as IE does
+            // for HTML).
+            //
+            // With these results in hand, we conclude that there are
+            // various levels of safety:
+            //  - Paranoid: alphanumeric, spaces and dashes(?)
+            //  - International: Paranoid + non-ASCII Unicode
+            //  - Edgy: Everything except quotes, backslashes
+            //  - NoJS: Standards compliance, e.g. sod IE. Note that
+            //    with some judicious character escaping (since certain
+            //    types of escaping doesn't work) this is theoretically
+            //    OK as long as innerHTML/cssText is not called.
+            // We believe that international is a reasonable default
+            // (that we will implement now), and once we do more
+            // extensive research, we may feel comfortable with dropping
+            // it down to edgy.
+
+            // Edgy: alphanumeric, spaces, dashes, underscores and Unicode.  Use of
+            // str(c)spn assumes that the string was already well formed
+            // Unicode (which of course it is).
+            if (strspn($font, $this->mask) !== strlen($font)) {
+                continue;
+            }
+
+            // Historical:
+            // In the absence of innerHTML/cssText, these ugly
+            // transforms don't pose a security risk (as \\ and \"
+            // might--these escapes are not supported by most browsers).
+            // We could try to be clever and use single-quote wrapping
+            // when there is a double quote present, but I have choosen
+            // not to implement that.  (NOTE: you can reduce the amount
+            // of escapes by one depending on what quoting style you use)
+            // $font = str_replace('\\', '\\5C ', $font);
+            // $font = str_replace('"',  '\\22 ', $font);
+            // $font = str_replace("'",  '\\27 ', $font);
+
+            // font possibly with spaces, requires quoting
+            $final .= "'$font', ";
+        }
+        $final = rtrim($final, ', ');
+        if ($final === '') {
+            return false;
+        }
+        return $final;
+    }
+
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Ident.php

@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * Validates based on {ident} CSS grammar production
+ */
+class HTMLPurifier_AttrDef_CSS_Ident extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = trim($string);
+
+        // early abort: '' and '0' (strings that convert to false) are invalid
+        if (!$string) {
+            return false;
+        }
+
+        $pattern = '/^(-?[A-Za-z_][A-Za-z_\-0-9]*)$/';
+        if (!preg_match($pattern, $string)) {
+            return false;
+        }
+        return $string;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php

@@ -0,0 +1,56 @@
+<?php
+
+/**
+ * Decorator which enables !important to be used in CSS values.
+ */
+class HTMLPurifier_AttrDef_CSS_ImportantDecorator extends HTMLPurifier_AttrDef
+{
+    /**
+     * @type HTMLPurifier_AttrDef
+     */
+    public $def;
+    /**
+     * @type bool
+     */
+    public $allow;
+
+    /**
+     * @param HTMLPurifier_AttrDef $def Definition to wrap
+     * @param bool $allow Whether or not to allow !important
+     */
+    public function __construct($def, $allow = false)
+    {
+        $this->def = $def;
+        $this->allow = $allow;
+    }
+
+    /**
+     * Intercepts and removes !important if necessary
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        // test for ! and important tokens
+        $string = trim($string);
+        $is_important = false;
+        // :TODO: optimization: test directly for !important and ! important
+        if (strlen($string) >= 9 && substr($string, -9) === 'important') {
+            $temp = rtrim(substr($string, 0, -9));
+            // use a temp, because we might want to restore important
+            if (strlen($temp) >= 1 && substr($temp, -1) === '!') {
+                $string = rtrim(substr($temp, 0, -1));
+                $is_important = true;
+            }
+        }
+        $string = $this->def->validate($string, $config, $context);
+        if ($this->allow && $is_important) {
+            $string .= ' !important';
+        }
+        return $string;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Length.php

@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * Represents a Length as defined by CSS.
+ */
+class HTMLPurifier_AttrDef_CSS_Length extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @type HTMLPurifier_Length|string
+     */
+    protected $min;
+
+    /**
+     * @type HTMLPurifier_Length|string
+     */
+    protected $max;
+
+    /**
+     * @param HTMLPurifier_Length|string $min Minimum length, or null for no bound. String is also acceptable.
+     * @param HTMLPurifier_Length|string $max Maximum length, or null for no bound. String is also acceptable.
+     */
+    public function __construct($min = null, $max = null)
+    {
+        $this->min = $min !== null ? HTMLPurifier_Length::make($min) : null;
+        $this->max = $max !== null ? HTMLPurifier_Length::make($max) : null;
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = $this->parseCDATA($string);
+
+        // Optimizations
+        if ($string === '') {
+            return false;
+        }
+        if ($string === '0') {
+            return '0';
+        }
+        if (strlen($string) === 1) {
+            return false;
+        }
+
+        $length = HTMLPurifier_Length::make($string);
+        if (!$length->isValid()) {
+            return false;
+        }
+
+        if ($this->min) {
+            $c = $length->compareTo($this->min);
+            if ($c === false) {
+                return false;
+            }
+            if ($c < 0) {
+                return false;
+            }
+        }
+        if ($this->max) {
+            $c = $length->compareTo($this->max);
+            if ($c === false) {
+                return false;
+            }
+            if ($c > 0) {
+                return false;
+            }
+        }
+        return $length->toString();
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/ListStyle.php

@@ -0,0 +1,112 @@
+<?php
+
+/**
+ * Validates shorthand CSS property list-style.
+ * @warning Does not support url tokens that have internal spaces.
+ */
+class HTMLPurifier_AttrDef_CSS_ListStyle extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * Local copy of validators.
+     * @type HTMLPurifier_AttrDef[]
+     * @note See HTMLPurifier_AttrDef_CSS_Font::$info for a similar impl.
+     */
+    protected $info;
+
+    /**
+     * @param HTMLPurifier_Config $config
+     */
+    public function __construct($config)
+    {
+        $def = $config->getCSSDefinition();
+        $this->info['list-style-type'] = $def->info['list-style-type'];
+        $this->info['list-style-position'] = $def->info['list-style-position'];
+        $this->info['list-style-image'] = $def->info['list-style-image'];
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        // regular pre-processing
+        $string = $this->parseCDATA($string);
+        if ($string === '') {
+            return false;
+        }
+
+        // assumes URI doesn't have spaces in it
+        $bits = explode(' ', strtolower($string)); // bits to process
+
+        $caught = array();
+        $caught['type'] = false;
+        $caught['position'] = false;
+        $caught['image'] = false;
+
+        $i = 0; // number of catches
+        $none = false;
+
+        foreach ($bits as $bit) {
+            if ($i >= 3) {
+                return;
+            } // optimization bit
+            if ($bit === '') {
+                continue;
+            }
+            foreach ($caught as $key => $status) {
+                if ($status !== false) {
+                    continue;
+                }
+                $r = $this->info['list-style-' . $key]->validate($bit, $config, $context);
+                if ($r === false) {
+                    continue;
+                }
+                if ($r === 'none') {
+                    if ($none) {
+                        continue;
+                    } else {
+                        $none = true;
+                    }
+                    if ($key == 'image') {
+                        continue;
+                    }
+                }
+                $caught[$key] = $r;
+                $i++;
+                break;
+            }
+        }
+
+        if (!$i) {
+            return false;
+        }
+
+        $ret = array();
+
+        // construct type
+        if ($caught['type']) {
+            $ret[] = $caught['type'];
+        }
+
+        // construct image
+        if ($caught['image']) {
+            $ret[] = $caught['image'];
+        }
+
+        // construct position
+        if ($caught['position']) {
+            $ret[] = $caught['position'];
+        }
+
+        if (empty($ret)) {
+            return false;
+        }
+        return implode(' ', $ret);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Multiple.php

@@ -0,0 +1,71 @@
+<?php
+
+/**
+ * Framework class for strings that involve multiple values.
+ *
+ * Certain CSS properties such as border-width and margin allow multiple
+ * lengths to be specified.  This class can take a vanilla border-width
+ * definition and multiply it, usually into a max of four.
+ *
+ * @note Even though the CSS specification isn't clear about it, inherit
+ *       can only be used alone: it will never manifest as part of a multi
+ *       shorthand declaration.  Thus, this class does not allow inherit.
+ */
+class HTMLPurifier_AttrDef_CSS_Multiple extends HTMLPurifier_AttrDef
+{
+    /**
+     * Instance of component definition to defer validation to.
+     * @type HTMLPurifier_AttrDef
+     * @todo Make protected
+     */
+    public $single;
+
+    /**
+     * Max number of values allowed.
+     * @todo Make protected
+     */
+    public $max;
+
+    /**
+     * @param HTMLPurifier_AttrDef $single HTMLPurifier_AttrDef to multiply
+     * @param int $max Max number of values allowed (usually four)
+     */
+    public function __construct($single, $max = 4)
+    {
+        $this->single = $single;
+        $this->max = $max;
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = $this->mungeRgb($this->parseCDATA($string));
+        if ($string === '') {
+            return false;
+        }
+        $parts = explode(' ', $string); // parseCDATA replaced \r, \t and \n
+        $length = count($parts);
+        $final = '';
+        for ($i = 0, $num = 0; $i < $length && $num < $this->max; $i++) {
+            if (ctype_space($parts[$i])) {
+                continue;
+            }
+            $result = $this->single->validate($parts[$i], $config, $context);
+            if ($result !== false) {
+                $final .= $result . ' ';
+                $num++;
+            }
+        }
+        if ($final === '') {
+            return false;
+        }
+        return rtrim($final);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Number.php

@@ -0,0 +1,90 @@
+<?php
+
+/**
+ * Validates a number as defined by the CSS spec.
+ */
+class HTMLPurifier_AttrDef_CSS_Number extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * Indicates whether or not only positive values are allowed.
+     * @type bool
+     */
+    protected $non_negative = false;
+
+    /**
+     * @param bool $non_negative indicates whether negatives are forbidden
+     */
+    public function __construct($non_negative = false)
+    {
+        $this->non_negative = $non_negative;
+    }
+
+    /**
+     * @param string $number
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return string|bool
+     * @warning Some contexts do not pass $config, $context. These
+     *          variables should not be used without checking HTMLPurifier_Length
+     */
+    public function validate($number, $config, $context)
+    {
+        $number = $this->parseCDATA($number);
+
+        if ($number === '') {
+            return false;
+        }
+        if ($number === '0') {
+            return '0';
+        }
+
+        $sign = '';
+        switch ($number[0]) {
+            case '-':
+                if ($this->non_negative) {
+                    return false;
+                }
+                $sign = '-';
+            case '+':
+                $number = substr($number, 1);
+        }
+
+        if (ctype_digit($number)) {
+            $number = ltrim($number, '0');
+            return $number ? $sign . $number : '0';
+        }
+
+        // Period is the only non-numeric character allowed
+        if (strpos($number, '.') === false) {
+            return false;
+        }
+
+        list($left, $right) = explode('.', $number, 2);
+
+        if ($left === '' && $right === '') {
+            return false;
+        }
+        if ($left !== '' && !ctype_digit($left)) {
+            return false;
+        }
+
+        // Remove leading zeros until positive number or a zero stays left
+        if (ltrim($left, '0') != '') {
+            $left = ltrim($left, '0');
+        } else {
+            $left = '0';
+        }
+
+        $right = rtrim($right, '0');
+
+        if ($right === '') {
+            return $left ? $sign . $left : '0';
+        } elseif (!ctype_digit($right)) {
+            return false;
+        }
+        return $sign . $left . '.' . $right;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Percentage.php

@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * Validates a Percentage as defined by the CSS spec.
+ */
+class HTMLPurifier_AttrDef_CSS_Percentage extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * Instance to defer number validation to.
+     * @type HTMLPurifier_AttrDef_CSS_Number
+     */
+    protected $number_def;
+
+    /**
+     * @param bool $non_negative Whether to forbid negative values
+     */
+    public function __construct($non_negative = false)
+    {
+        $this->number_def = new HTMLPurifier_AttrDef_CSS_Number($non_negative);
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = $this->parseCDATA($string);
+
+        if ($string === '') {
+            return false;
+        }
+        $length = strlen($string);
+        if ($length === 1) {
+            return false;
+        }
+        if ($string[$length - 1] !== '%') {
+            return false;
+        }
+
+        $number = substr($string, 0, $length - 1);
+        $number = $this->number_def->validate($number, $config, $context);
+
+        if ($number === false) {
+            return false;
+        }
+        return "$number%";
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Ratio.php

@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * Validates a ratio as defined by the CSS spec.
+ */
+class HTMLPurifier_AttrDef_CSS_Ratio extends HTMLPurifier_AttrDef
+{
+    /**
+     * @param   string               $ratio   Ratio to validate
+     * @param   HTMLPurifier_Config  $config  Configuration options
+     * @param   HTMLPurifier_Context $context Context
+     *
+     * @return  string|boolean
+     *
+     * @warning Some contexts do not pass $config, $context. These
+     *          variables should not be used without checking HTMLPurifier_Length
+     */
+    public function validate($ratio, $config, $context)
+    {
+        $ratio = $this->parseCDATA($ratio);
+
+        $parts = explode('/', $ratio, 2);
+        $length = count($parts);
+
+        if ($length < 1 || $length > 2) {
+            return false;
+        }
+
+        $num = new \HTMLPurifier_AttrDef_CSS_Number();
+
+        if ($length === 1) {
+            return $num->validate($parts[0], $config, $context);
+        }
+
+        $num1 = $num->validate($parts[0], $config, $context);
+        $num2 = $num->validate($parts[1], $config, $context);
+
+        if ($num1 === false || $num2 === false) {
+            return false;
+        }
+
+        return $num1 . '/' . $num2;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/TextDecoration.php

@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * Validates the value for the CSS property text-decoration
+ * @note This class could be generalized into a version that acts sort of
+ *       like Enum except you can compound the allowed values.
+ */
+class HTMLPurifier_AttrDef_CSS_TextDecoration extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        static $allowed_values = array(
+            'line-through' => true,
+            'overline' => true,
+            'underline' => true,
+        );
+
+        $string = strtolower($this->parseCDATA($string));
+
+        if ($string === 'none') {
+            return $string;
+        }
+
+        $parts = explode(' ', $string);
+        $final = '';
+        foreach ($parts as $part) {
+            if (isset($allowed_values[$part])) {
+                $final .= $part . ' ';
+            }
+        }
+        $final = rtrim($final);
+        if ($final === '') {
+            return false;
+        }
+        return $final;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/URI.php

@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * Validates a URI in CSS syntax, which uses url('http://example.com')
+ * @note While theoretically speaking a URI in a CSS document could
+ *       be non-embedded, as of CSS2 there is no such usage so we're
+ *       generalizing it. This may need to be changed in the future.
+ * @warning Since HTMLPurifier_AttrDef_CSS blindly uses semicolons as
+ *          the separator, you cannot put a literal semicolon in
+ *          in the URI. Try percent encoding it, in that case.
+ */
+class HTMLPurifier_AttrDef_CSS_URI extends HTMLPurifier_AttrDef_URI
+{
+
+    public function __construct()
+    {
+        parent::__construct(true); // always embedded
+    }
+
+    /**
+     * @param string $uri_string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($uri_string, $config, $context)
+    {
+        // parse the URI out of the string and then pass it onto
+        // the parent object
+
+        $uri_string = $this->parseCDATA($uri_string);
+        if (strpos($uri_string, 'url(') !== 0) {
+            return false;
+        }
+        $uri_string = substr($uri_string, 4);
+        if (strlen($uri_string) == 0) {
+            return false;
+        }
+        $new_length = strlen($uri_string) - 1;
+        if ($uri_string[$new_length] != ')') {
+            return false;
+        }
+        $uri = trim(substr($uri_string, 0, $new_length));
+
+        if (!empty($uri) && ($uri[0] == "'" || $uri[0] == '"')) {
+            $quote = $uri[0];
+            $new_length = strlen($uri) - 1;
+            if ($uri[$new_length] !== $quote) {
+                return false;
+            }
+            $uri = substr($uri, 1, $new_length - 1);
+        }
+
+        $uri = $this->expandCSSEscape($uri);
+
+        $result = parent::validate($uri, $config, $context);
+
+        if ($result === false) {
+            return false;
+        }
+
+        // extra sanity check; should have been done by URI
+        $result = str_replace(array('"', "\\", "\n", "\x0c", "\r"), "", $result);
+
+        // suspicious characters are ()'; we're going to percent encode
+        // them for safety.
+        $result = str_replace(array('(', ')', "'"), array('%28', '%29', '%27'), $result);
+
+        // there's an extra bug where ampersands lose their escaping on
+        // an innerHTML cycle, so a very unlucky query parameter could
+        // then change the meaning of the URL.  Unfortunately, there's
+        // not much we can do about that...
+        return "url(\"$result\")";
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Clone.php

@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * Dummy AttrDef that mimics another AttrDef, BUT it generates clones
+ * with make.
+ */
+class HTMLPurifier_AttrDef_Clone extends HTMLPurifier_AttrDef
+{
+    /**
+     * What we're cloning.
+     * @type HTMLPurifier_AttrDef
+     */
+    protected $clone;
+
+    /**
+     * @param HTMLPurifier_AttrDef $clone
+     */
+    public function __construct($clone)
+    {
+        $this->clone = $clone;
+    }
+
+    /**
+     * @param string $v
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($v, $config, $context)
+    {
+        return $this->clone->validate($v, $config, $context);
+    }
+
+    /**
+     * @param string $string
+     * @return HTMLPurifier_AttrDef
+     */
+    public function make($string)
+    {
+        return clone $this->clone;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Enum.php

@@ -0,0 +1,73 @@
+<?php
+
+// Enum = Enumerated
+/**
+ * Validates a keyword against a list of valid values.
+ * @warning The case-insensitive compare of this function uses PHP's
+ *          built-in strtolower and ctype_lower functions, which may
+ *          cause problems with international comparisons
+ */
+class HTMLPurifier_AttrDef_Enum extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * Lookup table of valid values.
+     * @type array
+     * @todo Make protected
+     */
+    public $valid_values = array();
+
+    /**
+     * Bool indicating whether or not enumeration is case sensitive.
+     * @note In general this is always case insensitive.
+     */
+    protected $case_sensitive = false; // values according to W3C spec
+
+    /**
+     * @param array $valid_values List of valid values
+     * @param bool $case_sensitive Whether or not case sensitive
+     */
+    public function __construct($valid_values = array(), $case_sensitive = false)
+    {
+        $this->valid_values = array_flip($valid_values);
+        $this->case_sensitive = $case_sensitive;
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = trim($string);
+        if (!$this->case_sensitive) {
+            // we may want to do full case-insensitive libraries
+            $string = ctype_lower($string) ? $string : strtolower($string);
+        }
+        $result = isset($this->valid_values[$string]);
+
+        return $result ? $string : false;
+    }
+
+    /**
+     * @param string $string In form of comma-delimited list of case-insensitive
+     *      valid values. Example: "foo,bar,baz". Prepend "s:" to make
+     *      case sensitive
+     * @return HTMLPurifier_AttrDef_Enum
+     */
+    public function make($string)
+    {
+        if (strlen($string) > 2 && $string[0] == 's' && $string[1] == ':') {
+            $string = substr($string, 2);
+            $sensitive = true;
+        } else {
+            $sensitive = false;
+        }
+        $values = explode(',', $string);
+        return new HTMLPurifier_AttrDef_Enum($values, $sensitive);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Bool.php

@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * Validates a boolean attribute
+ */
+class HTMLPurifier_AttrDef_HTML_Bool extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @type string
+     */
+    protected $name;
+
+    /**
+     * @type bool
+     */
+    public $minimized = true;
+
+    /**
+     * @param bool|string $name
+     */
+    public function __construct($name = false)
+    {
+        $this->name = $name;
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        return $this->name;
+    }
+
+    /**
+     * @param string $string Name of attribute
+     * @return HTMLPurifier_AttrDef_HTML_Bool
+     */
+    public function make($string)
+    {
+        return new HTMLPurifier_AttrDef_HTML_Bool($string);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Class.php

@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * Implements special behavior for class attribute (normally NMTOKENS)
+ */
+class HTMLPurifier_AttrDef_HTML_Class extends HTMLPurifier_AttrDef_HTML_Nmtokens
+{
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    protected function split($string, $config, $context)
+    {
+        // really, this twiddle should be lazy loaded
+        $name = $config->getDefinition('HTML')->doctype->name;
+        if ($name == "XHTML 1.1" || $name == "XHTML 2.0") {
+            return parent::split($string, $config, $context);
+        } else {
+            return preg_split('/\s+/', $string);
+        }
+    }
+
+    /**
+     * @param array $tokens
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    protected function filter($tokens, $config, $context)
+    {
+        $allowed = $config->get('Attr.AllowedClasses');
+        $forbidden = $config->get('Attr.ForbiddenClasses');
+        $ret = array();
+        foreach ($tokens as $token) {
+            if (($allowed === null || isset($allowed[$token])) &&
+                !isset($forbidden[$token]) &&
+                // We need this O(n) check because of PHP's array
+                // implementation that casts -0 to 0.
+                !in_array($token, $ret, true)
+            ) {
+                $ret[] = $token;
+            }
+        }
+        return $ret;
+    }
+}

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Color.php

@@ -0,0 +1,51 @@
+<?php
+
+/**
+ * Validates a color according to the HTML spec.
+ */
+class HTMLPurifier_AttrDef_HTML_Color extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        static $colors = null;
+        if ($colors === null) {
+            $colors = $config->get('Core.ColorKeywords');
+        }
+
+        $string = trim($string);
+
+        if (empty($string)) {
+            return false;
+        }
+        $lower = strtolower($string);
+        if (isset($colors[$lower])) {
+            return $colors[$lower];
+        }
+        if ($string[0] === '#') {
+            $hex = substr($string, 1);
+        } else {
+            $hex = $string;
+        }
+
+        $length = strlen($hex);
+        if ($length !== 3 && $length !== 6) {
+            return false;
+        }
+        if (!ctype_xdigit($hex)) {
+            return false;
+        }
+        if ($length === 3) {
+            $hex = $hex[0] . $hex[0] . $hex[1] . $hex[1] . $hex[2] . $hex[2];
+        }
+        return "#$hex";
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/ContentEditable.php

@@ -0,0 +1,16 @@
+<?php
+
+class HTMLPurifier_AttrDef_HTML_ContentEditable extends HTMLPurifier_AttrDef
+{
+    public function validate($string, $config, $context)
+    {
+        $allowed = array('false');
+        if ($config->get('HTML.Trusted')) {
+            $allowed = array('', 'true', 'false');
+        }
+
+        $enum = new HTMLPurifier_AttrDef_Enum($allowed);
+
+        return $enum->validate($string, $config, $context);
+    }
+}

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/FrameTarget.php

@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * Special-case enum attribute definition that lazy loads allowed frame targets
+ */
+class HTMLPurifier_AttrDef_HTML_FrameTarget extends HTMLPurifier_AttrDef_Enum
+{
+
+    /**
+     * @type array
+     */
+    public $valid_values = false; // uninitialized value
+
+    /**
+     * @type bool
+     */
+    protected $case_sensitive = false;
+
+    public function __construct()
+    {
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        if ($this->valid_values === false) {
+            $this->valid_values = $config->get('Attr.AllowedFrameTargets');
+        }
+        return parent::validate($string, $config, $context);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/ID.php

@@ -0,0 +1,113 @@
+<?php
+
+/**
+ * Validates the HTML attribute ID.
+ * @warning Even though this is the id processor, it
+ *          will ignore the directive Attr:IDBlacklist, since it will only
+ *          go according to the ID accumulator. Since the accumulator is
+ *          automatically generated, it will have already absorbed the
+ *          blacklist. If you're hacking around, make sure you use load()!
+ */
+
+class HTMLPurifier_AttrDef_HTML_ID extends HTMLPurifier_AttrDef
+{
+
+    // selector is NOT a valid thing to use for IDREFs, because IDREFs
+    // *must* target IDs that exist, whereas selector #ids do not.
+
+    /**
+     * Determines whether or not we're validating an ID in a CSS
+     * selector context.
+     * @type bool
+     */
+    protected $selector;
+
+    /**
+     * @param bool $selector
+     */
+    public function __construct($selector = false)
+    {
+        $this->selector = $selector;
+    }
+
+    /**
+     * @param string $id
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($id, $config, $context)
+    {
+        if (!$this->selector && !$config->get('Attr.EnableID')) {
+            return false;
+        }
+
+        $id = trim($id); // trim it first
+
+        if ($id === '') {
+            return false;
+        }
+
+        $prefix = $config->get('Attr.IDPrefix');
+        if ($prefix !== '') {
+            $prefix .= $config->get('Attr.IDPrefixLocal');
+            // prevent re-appending the prefix
+            if (strpos($id, $prefix) !== 0) {
+                $id = $prefix . $id;
+            }
+        } elseif ($config->get('Attr.IDPrefixLocal') !== '') {
+            trigger_error(
+                '%Attr.IDPrefixLocal cannot be used unless ' .
+                '%Attr.IDPrefix is set',
+                E_USER_WARNING
+            );
+        }
+
+        if (!$this->selector) {
+            $id_accumulator =& $context->get('IDAccumulator');
+            if (isset($id_accumulator->ids[$id])) {
+                return false;
+            }
+        }
+
+        // we purposely avoid using regex, hopefully this is faster
+
+        if ($config->get('Attr.ID.HTML5') === true) {
+            if (preg_match('/[\t\n\x0b\x0c ]/', $id)) {
+                return false;
+            }
+        } else {
+            if (ctype_alpha($id)) {
+                // OK
+            } else {
+                if (!ctype_alpha(@$id[0])) {
+                    return false;
+                }
+                // primitive style of regexps, I suppose
+                $trim = trim(
+                    $id,
+                    'A..Za..z0..9:-._'
+                );
+                if ($trim !== '') {
+                    return false;
+                }
+            }
+        }
+
+        $regexp = $config->get('Attr.IDBlacklistRegexp');
+        if ($regexp && preg_match($regexp, $id)) {
+            return false;
+        }
+
+        if (!$this->selector) {
+            $id_accumulator->add($id);
+        }
+
+        // if no change was made to the ID, return the result
+        // else, return the new id if stripping whitespace made it
+        //     valid, or return false.
+        return $id;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Length.php

@@ -0,0 +1,56 @@
+<?php
+
+/**
+ * Validates the HTML type length (not to be confused with CSS's length).
+ *
+ * This accepts integer pixels or percentages as lengths for certain
+ * HTML attributes.
+ */
+
+class HTMLPurifier_AttrDef_HTML_Length extends HTMLPurifier_AttrDef_HTML_Pixels
+{
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = trim($string);
+        if ($string === '') {
+            return false;
+        }
+
+        $parent_result = parent::validate($string, $config, $context);
+        if ($parent_result !== false) {
+            return $parent_result;
+        }
+
+        $length = strlen($string);
+        $last_char = $string[$length - 1];
+
+        if ($last_char !== '%') {
+            return false;
+        }
+
+        $points = substr($string, 0, $length - 1);
+
+        if (!is_numeric($points)) {
+            return false;
+        }
+
+        $points = (int)$points;
+
+        if ($points < 0) {
+            return '0%';
+        }
+        if ($points > 100) {
+            return '100%';
+        }
+        return ((string)$points) . '%';
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/LinkTypes.php

@@ -0,0 +1,72 @@
+<?php
+
+/**
+ * Validates a rel/rev link attribute against a directive of allowed values
+ * @note We cannot use Enum because link types allow multiple
+ *       values.
+ * @note Assumes link types are ASCII text
+ */
+class HTMLPurifier_AttrDef_HTML_LinkTypes extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * Name config attribute to pull.
+     * @type string
+     */
+    protected $name;
+
+    /**
+     * @param string $name
+     */
+    public function __construct($name)
+    {
+        $configLookup = array(
+            'rel' => 'AllowedRel',
+            'rev' => 'AllowedRev'
+        );
+        if (!isset($configLookup[$name])) {
+            trigger_error(
+                'Unrecognized attribute name for link ' .
+                'relationship.',
+                E_USER_ERROR
+            );
+            return;
+        }
+        $this->name = $configLookup[$name];
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $allowed = $config->get('Attr.' . $this->name);
+        if (empty($allowed)) {
+            return false;
+        }
+
+        $string = $this->parseCDATA($string);
+        $parts = explode(' ', $string);
+
+        // lookup to prevent duplicates
+        $ret_lookup = array();
+        foreach ($parts as $part) {
+            $part = strtolower(trim($part));
+            if (!isset($allowed[$part])) {
+                continue;
+            }
+            $ret_lookup[$part] = true;
+        }
+
+        if (empty($ret_lookup)) {
+            return false;
+        }
+        $string = implode(' ', array_keys($ret_lookup));
+        return $string;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/MultiLength.php

@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * Validates a MultiLength as defined by the HTML spec.
+ *
+ * A multilength is either a integer (pixel count), a percentage, or
+ * a relative number.
+ */
+class HTMLPurifier_AttrDef_HTML_MultiLength extends HTMLPurifier_AttrDef_HTML_Length
+{
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = trim($string);
+        if ($string === '') {
+            return false;
+        }
+
+        $parent_result = parent::validate($string, $config, $context);
+        if ($parent_result !== false) {
+            return $parent_result;
+        }
+
+        $length = strlen($string);
+        $last_char = $string[$length - 1];
+
+        if ($last_char !== '*') {
+            return false;
+        }
+
+        $int = substr($string, 0, $length - 1);
+
+        if ($int == '') {
+            return '*';
+        }
+        if (!is_numeric($int)) {
+            return false;
+        }
+
+        $int = (int)$int;
+        if ($int < 0) {
+            return false;
+        }
+        if ($int == 0) {
+            return '0';
+        }
+        if ($int == 1) {
+            return '*';
+        }
+        return ((string)$int) . '*';
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Nmtokens.php

@@ -0,0 +1,70 @@
+<?php
+
+/**
+ * Validates contents based on NMTOKENS attribute type.
+ */
+class HTMLPurifier_AttrDef_HTML_Nmtokens extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = trim($string);
+
+        // early abort: '' and '0' (strings that convert to false) are invalid
+        if (!$string) {
+            return false;
+        }
+
+        $tokens = $this->split($string, $config, $context);
+        $tokens = $this->filter($tokens, $config, $context);
+        if (empty($tokens)) {
+            return false;
+        }
+        return implode(' ', $tokens);
+    }
+
+    /**
+     * Splits a space separated list of tokens into its constituent parts.
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    protected function split($string, $config, $context)
+    {
+        // OPTIMIZABLE!
+        // do the preg_match, capture all subpatterns for reformulation
+
+        // we don't support U+00A1 and up codepoints or
+        // escaping because I don't know how to do that with regexps
+        // and plus it would complicate optimization efforts (you never
+        // see that anyway).
+        $pattern = '/(?:(?<=\s)|\A)' . // look behind for space or string start
+            '((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)' .
+            '(?:(?=\s)|\z)/'; // look ahead for space or string end
+        preg_match_all($pattern, $string, $matches);
+        return $matches[1];
+    }
+
+    /**
+     * Template method for removing certain tokens based on arbitrary criteria.
+     * @note If we wanted to be really functional, we'd do an array_filter
+     *       with a callback. But... we're not.
+     * @param array $tokens
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    protected function filter($tokens, $config, $context)
+    {
+        return $tokens;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Pixels.php

@@ -0,0 +1,76 @@
+<?php
+
+/**
+ * Validates an integer representation of pixels according to the HTML spec.
+ */
+class HTMLPurifier_AttrDef_HTML_Pixels extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @type int
+     */
+    protected $max;
+
+    /**
+     * @param int $max
+     */
+    public function __construct($max = null)
+    {
+        $this->max = $max;
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = trim($string);
+        if ($string === '0') {
+            return $string;
+        }
+        if ($string === '') {
+            return false;
+        }
+        $length = strlen($string);
+        if (substr($string, $length - 2) == 'px') {
+            $string = substr($string, 0, $length - 2);
+        }
+        if (!is_numeric($string)) {
+            return false;
+        }
+        $int = (int)$string;
+
+        if ($int < 0) {
+            return '0';
+        }
+
+        // upper-bound value, extremely high values can
+        // crash operating systems, see <http://ha.ckers.org/imagecrash.html>
+        // WARNING, above link WILL crash you if you're using Windows
+
+        if ($this->max !== null && $int > $this->max) {
+            return (string)$this->max;
+        }
+        return (string)$int;
+    }
+
+    /**
+     * @param string $string
+     * @return HTMLPurifier_AttrDef
+     */
+    public function make($string)
+    {
+        if ($string === '') {
+            $max = null;
+        } else {
+            $max = (int)$string;
+        }
+        $class = get_class($this);
+        return new $class($max);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Integer.php

@@ -0,0 +1,91 @@
+<?php
+
+/**
+ * Validates an integer.
+ * @note While this class was modeled off the CSS definition, no currently
+ *       allowed CSS uses this type.  The properties that do are: widows,
+ *       orphans, z-index, counter-increment, counter-reset.  Some of the
+ *       HTML attributes, however, find use for a non-negative version of this.
+ */
+class HTMLPurifier_AttrDef_Integer extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * Whether or not negative values are allowed.
+     * @type bool
+     */
+    protected $negative = true;
+
+    /**
+     * Whether or not zero is allowed.
+     * @type bool
+     */
+    protected $zero = true;
+
+    /**
+     * Whether or not positive values are allowed.
+     * @type bool
+     */
+    protected $positive = true;
+
+    /**
+     * @param $negative Bool indicating whether or not negative values are allowed
+     * @param $zero Bool indicating whether or not zero is allowed
+     * @param $positive Bool indicating whether or not positive values are allowed
+     */
+    public function __construct($negative = true, $zero = true, $positive = true)
+    {
+        $this->negative = $negative;
+        $this->zero = $zero;
+        $this->positive = $positive;
+    }
+
+    /**
+     * @param string $integer
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($integer, $config, $context)
+    {
+        $integer = $this->parseCDATA($integer);
+        if ($integer === '') {
+            return false;
+        }
+
+        // we could possibly simply typecast it to integer, but there are
+        // certain fringe cases that must not return an integer.
+
+        // clip leading sign
+        if ($this->negative && $integer[0] === '-') {
+            $digits = substr($integer, 1);
+            if ($digits === '0') {
+                $integer = '0';
+            } // rm minus sign for zero
+        } elseif ($this->positive && $integer[0] === '+') {
+            $digits = $integer = substr($integer, 1); // rm unnecessary plus
+        } else {
+            $digits = $integer;
+        }
+
+        // test if it's numeric
+        if (!ctype_digit($digits)) {
+            return false;
+        }
+
+        // perform scope tests
+        if (!$this->zero && $integer == 0) {
+            return false;
+        }
+        if (!$this->positive && $integer > 0) {
+            return false;
+        }
+        if (!$this->negative && $integer < 0) {
+            return false;
+        }
+
+        return $integer;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Lang.php

@@ -0,0 +1,86 @@
+<?php
+
+/**
+ * Validates the HTML attribute lang, effectively a language code.
+ * @note Built according to RFC 3066, which obsoleted RFC 1766
+ */
+class HTMLPurifier_AttrDef_Lang extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $string = trim($string);
+        if (!$string) {
+            return false;
+        }
+
+        $subtags = explode('-', $string);
+        $num_subtags = count($subtags);
+
+        if ($num_subtags == 0) { // sanity check
+            return false;
+        }
+
+        // process primary subtag : $subtags[0]
+        $length = strlen($subtags[0]);
+        switch ($length) {
+            case 0:
+                return false;
+            case 1:
+                if (!($subtags[0] == 'x' || $subtags[0] == 'i')) {
+                    return false;
+                }
+                break;
+            case 2:
+            case 3:
+                if (!ctype_alpha($subtags[0])) {
+                    return false;
+                } elseif (!ctype_lower($subtags[0])) {
+                    $subtags[0] = strtolower($subtags[0]);
+                }
+                break;
+            default:
+                return false;
+        }
+
+        $new_string = $subtags[0];
+        if ($num_subtags == 1) {
+            return $new_string;
+        }
+
+        // process second subtag : $subtags[1]
+        $length = strlen($subtags[1]);
+        if ($length == 0 || ($length == 1 && $subtags[1] != 'x') || $length > 8 || !ctype_alnum($subtags[1])) {
+            return $new_string;
+        }
+        if (!ctype_lower($subtags[1])) {
+            $subtags[1] = strtolower($subtags[1]);
+        }
+
+        $new_string .= '-' . $subtags[1];
+        if ($num_subtags == 2) {
+            return $new_string;
+        }
+
+        // process all other subtags, index 2 and up
+        for ($i = 2; $i < $num_subtags; $i++) {
+            $length = strlen($subtags[$i]);
+            if ($length == 0 || $length > 8 || !ctype_alnum($subtags[$i])) {
+                return $new_string;
+            }
+            if (!ctype_lower($subtags[$i])) {
+                $subtags[$i] = strtolower($subtags[$i]);
+            }
+            $new_string .= '-' . $subtags[$i];
+        }
+        return $new_string;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Switch.php

@@ -0,0 +1,53 @@
+<?php
+
+/**
+ * Decorator that, depending on a token, switches between two definitions.
+ */
+class HTMLPurifier_AttrDef_Switch
+{
+
+    /**
+     * @type string
+     */
+    protected $tag;
+
+    /**
+     * @type HTMLPurifier_AttrDef
+     */
+    protected $withTag;
+
+    /**
+     * @type HTMLPurifier_AttrDef
+     */
+    protected $withoutTag;
+
+    /**
+     * @param string $tag Tag name to switch upon
+     * @param HTMLPurifier_AttrDef $with_tag Call if token matches tag
+     * @param HTMLPurifier_AttrDef $without_tag Call if token doesn't match, or there is no token
+     */
+    public function __construct($tag, $with_tag, $without_tag)
+    {
+        $this->tag = $tag;
+        $this->withTag = $with_tag;
+        $this->withoutTag = $without_tag;
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $token = $context->get('CurrentToken', true);
+        if (!$token || $token->name !== $this->tag) {
+            return $this->withoutTag->validate($string, $config, $context);
+        } else {
+            return $this->withTag->validate($string, $config, $context);
+        }
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/Text.php

@@ -0,0 +1,21 @@
+<?php
+
+/**
+ * Validates arbitrary text according to the HTML spec.
+ */
+class HTMLPurifier_AttrDef_Text extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        return $this->parseCDATA($string);
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI.php

@@ -0,0 +1,111 @@
+<?php
+
+/**
+ * Validates a URI as defined by RFC 3986.
+ * @note Scheme-specific mechanics deferred to HTMLPurifier_URIScheme
+ */
+class HTMLPurifier_AttrDef_URI extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * @type HTMLPurifier_URIParser
+     */
+    protected $parser;
+
+    /**
+     * @type bool
+     */
+    protected $embedsResource;
+
+    /**
+     * @param bool $embeds_resource Does the URI here result in an extra HTTP request?
+     */
+    public function __construct($embeds_resource = false)
+    {
+        $this->parser = new HTMLPurifier_URIParser();
+        $this->embedsResource = (bool)$embeds_resource;
+    }
+
+    /**
+     * @param string $string
+     * @return HTMLPurifier_AttrDef_URI
+     */
+    public function make($string)
+    {
+        $embeds = ($string === 'embedded');
+        return new HTMLPurifier_AttrDef_URI($embeds);
+    }
+
+    /**
+     * @param string $uri
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($uri, $config, $context)
+    {
+        if ($config->get('URI.Disable')) {
+            return false;
+        }
+
+        $uri = $this->parseCDATA($uri);
+
+        // parse the URI
+        $uri = $this->parser->parse($uri);
+        if ($uri === false) {
+            return false;
+        }
+
+        // add embedded flag to context for validators
+        $context->register('EmbeddedURI', $this->embedsResource);
+
+        $ok = false;
+        do {
+
+            // generic validation
+            $result = $uri->validate($config, $context);
+            if (!$result) {
+                break;
+            }
+
+            // chained filtering
+            $uri_def = $config->getDefinition('URI');
+            $result = $uri_def->filter($uri, $config, $context);
+            if (!$result) {
+                break;
+            }
+
+            // scheme-specific validation
+            $scheme_obj = $uri->getSchemeObj($config, $context);
+            if (!$scheme_obj) {
+                break;
+            }
+            if ($this->embedsResource && !$scheme_obj->browsable) {
+                break;
+            }
+            $result = $scheme_obj->validate($uri, $config, $context);
+            if (!$result) {
+                break;
+            }
+
+            // Post chained filtering
+            $result = $uri_def->postFilter($uri, $config, $context);
+            if (!$result) {
+                break;
+            }
+
+            // survived gauntlet
+            $ok = true;
+
+        } while (false);
+
+        $context->destroy('EmbeddedURI');
+        if (!$ok) {
+            return false;
+        }
+        // back to string
+        return $uri->toString();
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/Email.php

@@ -0,0 +1,20 @@
+<?php
+
+abstract class HTMLPurifier_AttrDef_URI_Email extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * Unpacks a mailbox into its display-name and address
+     * @param string $string
+     * @return mixed
+     */
+    public function unpack($string)
+    {
+        // needs to be implemented
+    }
+
+}
+
+// sub-implementations
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php

@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Primitive email validation class based on the regexp found at
+ * http://www.regular-expressions.info/email.html
+ */
+class HTMLPurifier_AttrDef_URI_Email_SimpleCheck extends HTMLPurifier_AttrDef_URI_Email
+{
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        // no support for named mailboxes i.e. "Bob <bob@example.com>"
+        // that needs more percent encoding to be done
+        if ($string == '') {
+            return false;
+        }
+        $string = trim($string);
+        $result = preg_match('/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i', $string);
+        return $result ? $string : false;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/Host.php

@@ -0,0 +1,136 @@
+<?php
+
+/**
+ * Validates a host according to the IPv4, IPv6 and DNS (future) specifications.
+ */
+class HTMLPurifier_AttrDef_URI_Host extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * IPv4 sub-validator.
+     * @type HTMLPurifier_AttrDef_URI_IPv4
+     */
+    protected $ipv4;
+
+    /**
+     * IPv6 sub-validator.
+     * @type HTMLPurifier_AttrDef_URI_IPv6
+     */
+    protected $ipv6;
+
+    public function __construct()
+    {
+        $this->ipv4 = new HTMLPurifier_AttrDef_URI_IPv4();
+        $this->ipv6 = new HTMLPurifier_AttrDef_URI_IPv6();
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $length = strlen($string);
+        // empty hostname is OK; it's usually semantically equivalent:
+        // the default host as defined by a URI scheme is used:
+        //
+        //      If the URI scheme defines a default for host, then that
+        //      default applies when the host subcomponent is undefined
+        //      or when the registered name is empty (zero length).
+        if ($string === '') {
+            return '';
+        }
+        if ($length > 1 && $string[0] === '[' && $string[$length - 1] === ']') {
+            //IPv6
+            $ip = substr($string, 1, $length - 2);
+            $valid = $this->ipv6->validate($ip, $config, $context);
+            if ($valid === false) {
+                return false;
+            }
+            return '[' . $valid . ']';
+        }
+
+        // need to do checks on unusual encodings too
+        $ipv4 = $this->ipv4->validate($string, $config, $context);
+        if ($ipv4 !== false) {
+            return $ipv4;
+        }
+
+        // A regular domain name.
+
+        // This doesn't match I18N domain names, but we don't have proper IRI support,
+        // so force users to insert Punycode.
+
+        // Underscores defined as Unreserved Characters in RFC 3986 are
+        // allowed in a URI. There are cases where we want to consider a
+        // URI containing "_" such as "_dmarc.example.com".
+        // Underscores are not allowed in the default. If you want to
+        // allow it, set Core.AllowHostnameUnderscore to true.
+        $underscore = $config->get('Core.AllowHostnameUnderscore') ? '_' : '';
+
+        // Based off of RFC 1738, but amended so that
+        // as per RFC 3696, the top label need only not be all numeric.
+        // The productions describing this are:
+        $a   = '[a-z]';     // alpha
+        $an  = "[a-z0-9$underscore]";  // alphanum
+        $and = "[a-z0-9-$underscore]"; // alphanum | "-"
+        // domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
+        $domainlabel = "$an(?:$and*$an)?";
+        // AMENDED as per RFC 3696
+        // toplabel    = alphanum | alphanum *( alphanum | "-" ) alphanum
+        //      side condition: not all numeric
+        $toplabel = "$an(?:$and*$an)?";
+        // hostname    = *( domainlabel "." ) toplabel [ "." ]
+        if (preg_match("/^(?:$domainlabel\.)*($toplabel)\.?$/i", $string, $matches)) {
+            if (!ctype_digit($matches[1])) {
+                return $string;
+            }
+        }
+
+        // PHP 5.3 and later support this functionality natively
+        if (function_exists('idn_to_ascii')) {
+            if (defined('IDNA_NONTRANSITIONAL_TO_ASCII') && defined('INTL_IDNA_VARIANT_UTS46')) {
+                $string = idn_to_ascii($string, IDNA_NONTRANSITIONAL_TO_ASCII, INTL_IDNA_VARIANT_UTS46);
+            } else {
+                $string = idn_to_ascii($string);
+            }
+
+        // If we have Net_IDNA2 support, we can support IRIs by
+        // punycoding them. (This is the most portable thing to do,
+        // since otherwise we have to assume browsers support
+        } elseif ($config->get('Core.EnableIDNA') && class_exists('Net_IDNA2')) {
+            $idna = new Net_IDNA2(array('encoding' => 'utf8', 'overlong' => false, 'strict' => true));
+            // we need to encode each period separately
+            $parts = explode('.', $string);
+            try {
+                $new_parts = array();
+                foreach ($parts as $part) {
+                    $encodable = false;
+                    for ($i = 0, $c = strlen($part); $i < $c; $i++) {
+                        if (ord($part[$i]) > 0x7a) {
+                            $encodable = true;
+                            break;
+                        }
+                    }
+                    if (!$encodable) {
+                        $new_parts[] = $part;
+                    } else {
+                        $new_parts[] = $idna->encode($part);
+                    }
+                }
+                $string = implode('.', $new_parts);
+            } catch (Exception $e) {
+                // XXX error reporting
+            }
+        }
+        // Try again
+        if (preg_match("/^($domainlabel\.)*$toplabel\.?$/i", $string)) {
+            return $string;
+        }
+        return false;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv4.php

@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * Validates an IPv4 address
+ * @author Feyd @ forums.devnetwork.net (public domain)
+ */
+class HTMLPurifier_AttrDef_URI_IPv4 extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * IPv4 regex, protected so that IPv6 can reuse it.
+     * @type string
+     */
+    protected $ip4;
+
+    /**
+     * @param string $aIP
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($aIP, $config, $context)
+    {
+        if (!$this->ip4) {
+            $this->_loadRegex();
+        }
+
+        if (preg_match('#^' . $this->ip4 . '$#s', $aIP)) {
+            return $aIP;
+        }
+        return false;
+    }
+
+    /**
+     * Lazy load function to prevent regex from being stuffed in
+     * cache.
+     */
+    protected function _loadRegex()
+    {
+        $oct = '(?:25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])'; // 0-255
+        $this->ip4 = "(?:{$oct}\\.{$oct}\\.{$oct}\\.{$oct})";
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/URI/IPv6.php

@@ -0,0 +1,89 @@
+<?php
+
+/**
+ * Validates an IPv6 address.
+ * @author Feyd @ forums.devnetwork.net (public domain)
+ * @note This function requires brackets to have been removed from address
+ *       in URI.
+ */
+class HTMLPurifier_AttrDef_URI_IPv6 extends HTMLPurifier_AttrDef_URI_IPv4
+{
+
+    /**
+     * @param string $aIP
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($aIP, $config, $context)
+    {
+        if (!$this->ip4) {
+            $this->_loadRegex();
+        }
+
+        $original = $aIP;
+
+        $hex = '[0-9a-fA-F]';
+        $blk = '(?:' . $hex . '{1,4})';
+        $pre = '(?:/(?:12[0-8]|1[0-1][0-9]|[1-9][0-9]|[0-9]))'; // /0 - /128
+
+        //      prefix check
+        if (strpos($aIP, '/') !== false) {
+            if (preg_match('#' . $pre . '$#s', $aIP, $find)) {
+                $aIP = substr($aIP, 0, 0 - strlen($find[0]));
+                unset($find);
+            } else {
+                return false;
+            }
+        }
+
+        //      IPv4-compatiblity check
+        if (preg_match('#(?<=:' . ')' . $this->ip4 . '$#s', $aIP, $find)) {
+            $aIP = substr($aIP, 0, 0 - strlen($find[0]));
+            $ip = explode('.', $find[0]);
+            $ip = array_map('dechex', $ip);
+            $aIP .= $ip[0] . $ip[1] . ':' . $ip[2] . $ip[3];
+            unset($find, $ip);
+        }
+
+        //      compression check
+        $aIP = explode('::', $aIP);
+        $c = count($aIP);
+        if ($c > 2) {
+            return false;
+        } elseif ($c == 2) {
+            list($first, $second) = $aIP;
+            $first = explode(':', $first);
+            $second = explode(':', $second);
+
+            if (count($first) + count($second) > 8) {
+                return false;
+            }
+
+            while (count($first) < 8) {
+                array_push($first, '0');
+            }
+
+            array_splice($first, 8 - count($second), 8, $second);
+            $aIP = $first;
+            unset($first, $second);
+        } else {
+            $aIP = explode(':', $aIP[0]);
+        }
+        $c = count($aIP);
+
+        if ($c != 8) {
+            return false;
+        }
+
+        //      All the pieces should be 16-bit hex strings. Are they?
+        foreach ($aIP as $piece) {
+            if (!preg_match('#^[0-9a-fA-F]{4}$#s', sprintf('%04s', $piece))) {
+                return false;
+            }
+        }
+        return $original;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform.php

@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * Processes an entire attribute array for corrections needing multiple values.
+ *
+ * Occasionally, a certain attribute will need to be removed and popped onto
+ * another value.  Instead of creating a complex return syntax for
+ * HTMLPurifier_AttrDef, we just pass the whole attribute array to a
+ * specialized object and have that do the special work.  That is the
+ * family of HTMLPurifier_AttrTransform.
+ *
+ * An attribute transformation can be assigned to run before or after
+ * HTMLPurifier_AttrDef validation.  See HTMLPurifier_HTMLDefinition for
+ * more details.
+ */
+
+abstract class HTMLPurifier_AttrTransform
+{
+
+    /**
+     * Abstract: makes changes to the attributes dependent on multiple values.
+     *
+     * @param array $attr Assoc array of attributes, usually from
+     *              HTMLPurifier_Token_Tag::$attr
+     * @param HTMLPurifier_Config $config Mandatory HTMLPurifier_Config object.
+     * @param HTMLPurifier_Context $context Mandatory HTMLPurifier_Context object
+     * @return array Processed attribute array.
+     */
+    abstract public function transform($attr, $config, $context);
+
+    /**
+     * Prepends CSS properties to the style attribute, creating the
+     * attribute if it doesn't exist.
+     * @param array &$attr Attribute array to process (passed by reference)
+     * @param string $css CSS to prepend
+     */
+    public function prependCSS(&$attr, $css)
+    {
+        $attr['style'] = isset($attr['style']) ? $attr['style'] : '';
+        $attr['style'] = $css . $attr['style'];
+    }
+
+    /**
+     * Retrieves and removes an attribute
+     * @param array &$attr Attribute array to process (passed by reference)
+     * @param mixed $key Key of attribute to confiscate
+     * @return mixed
+     */
+    public function confiscateAttr(&$attr, $key)
+    {
+        if (!isset($attr[$key])) {
+            return null;
+        }
+        $value = $attr[$key];
+        unset($attr[$key]);
+        return $value;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Background.php

@@ -0,0 +1,28 @@
+<?php
+
+/**
+ * Pre-transform that changes proprietary background attribute to CSS.
+ */
+class HTMLPurifier_AttrTransform_Background extends HTMLPurifier_AttrTransform
+{
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        if (!isset($attr['background'])) {
+            return $attr;
+        }
+
+        $background = $this->confiscateAttr($attr, 'background');
+        // some validation should happen here
+
+        $this->prependCSS($attr, "background-image:url($background);");
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/BdoDir.php

@@ -0,0 +1,27 @@
+<?php
+
+// this MUST be placed in post, as it assumes that any value in dir is valid
+
+/**
+ * Post-trasnform that ensures that bdo tags have the dir attribute set.
+ */
+class HTMLPurifier_AttrTransform_BdoDir extends HTMLPurifier_AttrTransform
+{
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        if (isset($attr['dir'])) {
+            return $attr;
+        }
+        $attr['dir'] = $config->get('Attr.DefaultTextDir');
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/BgColor.php

@@ -0,0 +1,28 @@
+<?php
+
+/**
+ * Pre-transform that changes deprecated bgcolor attribute to CSS.
+ */
+class HTMLPurifier_AttrTransform_BgColor extends HTMLPurifier_AttrTransform
+{
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        if (!isset($attr['bgcolor'])) {
+            return $attr;
+        }
+
+        $bgcolor = $this->confiscateAttr($attr, 'bgcolor');
+        // some validation should happen here
+
+        $this->prependCSS($attr, "background-color:$bgcolor;");
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/BoolToCSS.php

@@ -0,0 +1,47 @@
+<?php
+
+/**
+ * Pre-transform that changes converts a boolean attribute to fixed CSS
+ */
+class HTMLPurifier_AttrTransform_BoolToCSS extends HTMLPurifier_AttrTransform
+{
+    /**
+     * Name of boolean attribute that is trigger.
+     * @type string
+     */
+    protected $attr;
+
+    /**
+     * CSS declarations to add to style, needs trailing semicolon.
+     * @type string
+     */
+    protected $css;
+
+    /**
+     * @param string $attr attribute name to convert from
+     * @param string $css CSS declarations to add to style (needs semicolon)
+     */
+    public function __construct($attr, $css)
+    {
+        $this->attr = $attr;
+        $this->css = $css;
+    }
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        if (!isset($attr[$this->attr])) {
+            return $attr;
+        }
+        unset($attr[$this->attr]);
+        $this->prependCSS($attr, $this->css);
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Border.php

@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * Pre-transform that changes deprecated border attribute to CSS.
+ */
+class HTMLPurifier_AttrTransform_Border extends HTMLPurifier_AttrTransform
+{
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        if (!isset($attr['border'])) {
+            return $attr;
+        }
+        $border_width = $this->confiscateAttr($attr, 'border');
+        // some validation should happen here
+        $this->prependCSS($attr, "border:{$border_width}px solid;");
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/EnumToCSS.php

@@ -0,0 +1,68 @@
+<?php
+
+/**
+ * Generic pre-transform that converts an attribute with a fixed number of
+ * values (enumerated) to CSS.
+ */
+class HTMLPurifier_AttrTransform_EnumToCSS extends HTMLPurifier_AttrTransform
+{
+    /**
+     * Name of attribute to transform from.
+     * @type string
+     */
+    protected $attr;
+
+    /**
+     * Lookup array of attribute values to CSS.
+     * @type array
+     */
+    protected $enumToCSS = array();
+
+    /**
+     * Case sensitivity of the matching.
+     * @type bool
+     * @warning Currently can only be guaranteed to work with ASCII
+     *          values.
+     */
+    protected $caseSensitive = false;
+
+    /**
+     * @param string $attr Attribute name to transform from
+     * @param array $enum_to_css Lookup array of attribute values to CSS
+     * @param bool $case_sensitive Case sensitivity indicator, default false
+     */
+    public function __construct($attr, $enum_to_css, $case_sensitive = false)
+    {
+        $this->attr = $attr;
+        $this->enumToCSS = $enum_to_css;
+        $this->caseSensitive = (bool)$case_sensitive;
+    }
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        if (!isset($attr[$this->attr])) {
+            return $attr;
+        }
+
+        $value = trim($attr[$this->attr]);
+        unset($attr[$this->attr]);
+
+        if (!$this->caseSensitive) {
+            $value = strtolower($value);
+        }
+
+        if (!isset($this->enumToCSS[$value])) {
+            return $attr;
+        }
+        $this->prependCSS($attr, $this->enumToCSS[$value]);
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/ImgRequired.php

@@ -0,0 +1,47 @@
+<?php
+
+// must be called POST validation
+
+/**
+ * Transform that supplies default values for the src and alt attributes
+ * in img tags, as well as prevents the img tag from being removed
+ * because of a missing alt tag. This needs to be registered as both
+ * a pre and post attribute transform.
+ */
+class HTMLPurifier_AttrTransform_ImgRequired extends HTMLPurifier_AttrTransform
+{
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        $src = true;
+        if (!isset($attr['src'])) {
+            if ($config->get('Core.RemoveInvalidImg')) {
+                return $attr;
+            }
+            $attr['src'] = $config->get('Attr.DefaultInvalidImage');
+            $src = false;
+        }
+
+        if (!isset($attr['alt'])) {
+            if ($src) {
+                $alt = $config->get('Attr.DefaultImageAlt');
+                if ($alt === null) {
+                    $attr['alt'] = basename($attr['src']);
+                } else {
+                    $attr['alt'] = $alt;
+                }
+            } else {
+                $attr['alt'] = $config->get('Attr.DefaultInvalidImageAlt');
+            }
+        }
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/ImgSpace.php

@@ -0,0 +1,61 @@
+<?php
+
+/**
+ * Pre-transform that changes deprecated hspace and vspace attributes to CSS
+ */
+class HTMLPurifier_AttrTransform_ImgSpace extends HTMLPurifier_AttrTransform
+{
+    /**
+     * @type string
+     */
+    protected $attr;
+
+    /**
+     * @type array
+     */
+    protected $css = array(
+        'hspace' => array('left', 'right'),
+        'vspace' => array('top', 'bottom')
+    );
+
+    /**
+     * @param string $attr
+     */
+    public function __construct($attr)
+    {
+        $this->attr = $attr;
+        if (!isset($this->css[$attr])) {
+            trigger_error(htmlspecialchars($attr) . ' is not valid space attribute');
+        }
+    }
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        if (!isset($attr[$this->attr])) {
+            return $attr;
+        }
+
+        $width = $this->confiscateAttr($attr, $this->attr);
+        // some validation could happen here
+
+        if (!isset($this->css[$this->attr])) {
+            return $attr;
+        }
+
+        $style = '';
+        foreach ($this->css[$this->attr] as $suffix) {
+            $property = "margin-$suffix";
+            $style .= "$property:{$width}px;";
+        }
+        $this->prependCSS($attr, $style);
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Input.php

@@ -0,0 +1,56 @@
+<?php
+
+/**
+ * Performs miscellaneous cross attribute validation and filtering for
+ * input elements. This is meant to be a post-transform.
+ */
+class HTMLPurifier_AttrTransform_Input extends HTMLPurifier_AttrTransform
+{
+    /**
+     * @type HTMLPurifier_AttrDef_HTML_Pixels
+     */
+    protected $pixels;
+
+    public function __construct()
+    {
+        $this->pixels = new HTMLPurifier_AttrDef_HTML_Pixels();
+    }
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        if (!isset($attr['type'])) {
+            $t = 'text';
+        } else {
+            $t = strtolower($attr['type']);
+        }
+        if (isset($attr['checked']) && $t !== 'radio' && $t !== 'checkbox') {
+            unset($attr['checked']);
+        }
+        if (isset($attr['maxlength']) && $t !== 'text' && $t !== 'password') {
+            unset($attr['maxlength']);
+        }
+        if (isset($attr['size']) && $t !== 'text' && $t !== 'password') {
+            $result = $this->pixels->validate($attr['size'], $config, $context);
+            if ($result === false) {
+                unset($attr['size']);
+            } else {
+                $attr['size'] = $result;
+            }
+        }
+        if (isset($attr['src']) && $t !== 'image') {
+            unset($attr['src']);
+        }
+        if (!isset($attr['value']) && ($t === 'radio' || $t === 'checkbox')) {
+            $attr['value'] = '';
+        }
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Lang.php

@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * Post-transform that copies lang's value to xml:lang (and vice-versa)
+ * @note Theoretically speaking, this could be a pre-transform, but putting
+ *       post is more efficient.
+ */
+class HTMLPurifier_AttrTransform_Lang extends HTMLPurifier_AttrTransform
+{
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        $lang = isset($attr['lang']) ? $attr['lang'] : false;
+        $xml_lang = isset($attr['xml:lang']) ? $attr['xml:lang'] : false;
+
+        if ($lang !== false && $xml_lang === false) {
+            $attr['xml:lang'] = $lang;
+        } elseif ($xml_lang !== false) {
+            $attr['lang'] = $xml_lang;
+        }
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Length.php

@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * Class for handling width/height length attribute transformations to CSS
+ */
+class HTMLPurifier_AttrTransform_Length extends HTMLPurifier_AttrTransform
+{
+
+    /**
+     * @type string
+     */
+    protected $name;
+
+    /**
+     * @type string
+     */
+    protected $cssName;
+
+    public function __construct($name, $css_name = null)
+    {
+        $this->name = $name;
+        $this->cssName = $css_name ? $css_name : $name;
+    }
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        if (!isset($attr[$this->name])) {
+            return $attr;
+        }
+        $length = $this->confiscateAttr($attr, $this->name);
+        if (ctype_digit($length)) {
+            $length .= 'px';
+        }
+        $this->prependCSS($attr, $this->cssName . ":$length;");
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Name.php

@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * Pre-transform that changes deprecated name attribute to ID if necessary
+ */
+class HTMLPurifier_AttrTransform_Name extends HTMLPurifier_AttrTransform
+{
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        // Abort early if we're using relaxed definition of name
+        if ($config->get('HTML.Attr.Name.UseCDATA')) {
+            return $attr;
+        }
+        if (!isset($attr['name'])) {
+            return $attr;
+        }
+        $id = $this->confiscateAttr($attr, 'name');
+        if (isset($attr['id'])) {
+            return $attr;
+        }
+        $attr['id'] = $id;
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/NameSync.php

@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * Post-transform that performs validation to the name attribute; if
+ * it is present with an equivalent id attribute, it is passed through;
+ * otherwise validation is performed.
+ */
+class HTMLPurifier_AttrTransform_NameSync extends HTMLPurifier_AttrTransform
+{
+
+    /**
+     * @type HTMLPurifier_AttrDef_HTML_ID
+     */
+    public $idDef;
+
+    public function __construct()
+    {
+        $this->idDef = new HTMLPurifier_AttrDef_HTML_ID();
+    }
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        if (!isset($attr['name'])) {
+            return $attr;
+        }
+        $name = $attr['name'];
+        if (isset($attr['id']) && $attr['id'] === $name) {
+            return $attr;
+        }
+        $result = $this->idDef->validate($name, $config, $context);
+        if ($result === false) {
+            unset($attr['name']);
+        } else {
+            $attr['name'] = $result;
+        }
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Nofollow.php

@@ -0,0 +1,52 @@
+<?php
+
+// must be called POST validation
+
+/**
+ * Adds rel="nofollow" to all outbound links.  This transform is
+ * only attached if Attr.Nofollow is TRUE.
+ */
+class HTMLPurifier_AttrTransform_Nofollow extends HTMLPurifier_AttrTransform
+{
+    /**
+     * @type HTMLPurifier_URIParser
+     */
+    private $parser;
+
+    public function __construct()
+    {
+        $this->parser = new HTMLPurifier_URIParser();
+    }
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        if (!isset($attr['href'])) {
+            return $attr;
+        }
+
+        // XXX Kind of inefficient
+        $url = $this->parser->parse($attr['href']);
+        $scheme = $url->getSchemeObj($config, $context);
+
+        if ($scheme->browsable && !$url->isLocal($config, $context)) {
+            if (isset($attr['rel'])) {
+                $rels = explode(' ', $attr['rel']);
+                if (!in_array('nofollow', $rels)) {
+                    $rels[] = 'nofollow';
+                }
+                $attr['rel'] = implode(' ', $rels);
+            } else {
+                $attr['rel'] = 'nofollow';
+            }
+        }
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4

include/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/SafeEmbed.php

@@ -0,0 +1,25 @@
+<?php
+
+class HTMLPurifier_AttrTransform_SafeEmbed extends HTMLPurifier_AttrTransform
+{
+    /**
+     * @type string
+     */
+    public $name = "SafeEmbed";
+
+    /**
+     * @param array $attr
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return array
+     */
+    public function transform($attr, $config, $context)
+    {
+        $attr['allowscriptaccess'] = 'never';
+        $attr['allownetworking'] = 'internal';
+        $attr['type'] = 'application/x-shockwave-flash';
+        return $attr;
+    }
+}
+
+// vim: et sw=4 sts=4