diff options
Diffstat (limited to 'vendor/fguillot/picofeed/lib/PicoFeed/Filter/Attribute.php')
m--------- | vendor/fguillot/picofeed | 0 | ||||
-rw-r--r-- | vendor/fguillot/picofeed/lib/PicoFeed/Filter/Attribute.php | 658 |
2 files changed, 0 insertions, 658 deletions
diff --git a/vendor/fguillot/picofeed b/vendor/fguillot/picofeed new file mode 160000 +Subproject 0a1d0d3950f7f047dc8fb1d80aa6296e15f306d diff --git a/vendor/fguillot/picofeed/lib/PicoFeed/Filter/Attribute.php b/vendor/fguillot/picofeed/lib/PicoFeed/Filter/Attribute.php deleted file mode 100644 index 5948dec35..000000000 --- a/vendor/fguillot/picofeed/lib/PicoFeed/Filter/Attribute.php +++ /dev/null @@ -1,658 +0,0 @@ -<?php - -namespace PicoFeed\Filter; - -use \PicoFeed\Client\Url; - -/** - * Attribute Filter class - * - * @author Frederic Guillot - * @package Filter - */ -class Attribute -{ - /** - * Image proxy url - * - * @access private - * @var string - */ - private $image_proxy_url = ''; - - /** - * Image proxy callback - * - * @access private - * @var \Closure|null - */ - private $image_proxy_callback = null; - - /** - * Tags and attribute whitelist - * - * @access private - * @var array - */ - private $attribute_whitelist = array( - 'audio' => array('controls', 'src'), - 'video' => array('poster', 'controls', 'height', 'width', 'src'), - 'source' => array('src', 'type'), - 'dt' => array(), - 'dd' => array(), - 'dl' => array(), - 'table' => array(), - 'caption' => array(), - 'tr' => array(), - 'th' => array(), - 'td' => array(), - 'tbody' => array(), - 'thead' => array(), - 'h2' => array(), - 'h3' => array(), - 'h4' => array(), - 'h5' => array(), - 'h6' => array(), - 'strong' => array(), - 'em' => array(), - 'code' => array(), - 'pre' => array(), - 'blockquote' => array(), - 'p' => array(), - 'ul' => array(), - 'li' => array(), - 'ol' => array(), - 'br' => array(), - 'del' => array(), - 'a' => array('href'), - 'img' => array('src', 'title', 'alt'), - 'figure' => array(), - 'figcaption' => array(), - 'cite' => array(), - 'time' => array('datetime'), - 'abbr' => array('title'), - 'iframe' => array('width', 'height', 'frameborder', 'src'), - 'q' => array('cite') - ); - - /** - * Scheme whitelist - * - * For a complete list go to http://en.wikipedia.org/wiki/URI_scheme - * - * @access private - * @var array - */ - private $scheme_whitelist = array( - 'bitcoin:', - 'callto:', - 'ed2k://', - 'facetime://', - 'feed:', - 'ftp://', - 'geo:', - 'git://', - 'http://', - 'https://', - 'irc://', - 'irc6://', - 'ircs://', - 'jabber:', - 'magnet:', - 'mailto:', - 'nntp://', - 'rtmp://', - 'sftp://', - 'sip:', - 'sips:', - 'skype:', - 'smb://', - 'sms:', - 'spotify:', - 'ssh:', - 'steam:', - 'svn://', - 'tel:', - ); - - /** - * Iframe source whitelist, everything else is ignored - * - * @access private - * @var array - */ - private $iframe_whitelist = array( - 'http://www.youtube.com', - 'https://www.youtube.com', - 'http://player.vimeo.com', - 'https://player.vimeo.com', - 'http://www.dailymotion.com', - 'https://www.dailymotion.com', - ); - - /** - * Blacklisted resources - * - * @access private - * @var array - */ - private $media_blacklist = array( - 'api.flattr.com', - 'feeds.feedburner.com', - 'share.feedsportal.com', - 'da.feedsportal.com', - 'rss.feedsportal.com', - 'res.feedsportal.com', - 'res1.feedsportal.com', - 'res2.feedsportal.com', - 'res3.feedsportal.com', - 'pi.feedsportal.com', - 'rss.nytimes.com', - 'feeds.wordpress.com', - 'stats.wordpress.com', - 'rss.cnn.com', - 'twitter.com/home?status=', - 'twitter.com/share', - 'twitter_icon_large.png', - 'www.facebook.com/sharer.php', - 'facebook_icon_large.png', - 'plus.google.com/share', - 'www.gstatic.com/images/icons/gplus-16.png', - 'www.gstatic.com/images/icons/gplus-32.png', - 'www.gstatic.com/images/icons/gplus-64.png', - ); - - /** - * Attributes used for external resources - * - * @access private - * @var array - */ - private $media_attributes = array( - 'src', - 'href', - 'poster', - ); - - /** - * Attributes that must be integer - * - * @access private - * @var array - */ - private $integer_attributes = array( - 'width', - 'height', - 'frameborder', - ); - - /** - * Mandatory attributes for specified tags - * - * @access private - * @var array - */ - private $required_attributes = array( - 'a' => array('href'), - 'img' => array('src'), - 'iframe' => array('src'), - 'audio' => array('src'), - 'source' => array('src'), - ); - - /** - * Add attributes to specified tags - * - * @access private - * @var array - */ - private $add_attributes = array( - 'a' => array('rel' => 'noreferrer', 'target' => '_blank') - ); - - /** - * List of filters to apply - * - * @access private - * @var array - */ - private $filters = array( - 'filterEmptyAttribute', - 'filterAllowedAttribute', - 'filterIntegerAttribute', - 'rewriteAbsoluteUrl', - 'filterIframeAttribute', - 'filterBlacklistResourceAttribute', - 'filterProtocolUrlAttribute', - 'rewriteImageProxyUrl', - ); - - /** - * Add attributes to specified tags - * - * @access private - * @var \PicoFeed\Client\Url - */ - private $website; - - /** - * Constructor - * - * @access public - * @param \PicoFeed\Client\Url $website Website url instance - */ - public function __construct(Url $website) - { - $this->website = $website; - } - - /** - * Apply filters to the attributes list - * - * @access public - * @param string $tag Tag name - * @param array $attributes Attributes dictionary - * @return array Filtered attributes - */ - public function filter($tag, array $attributes) - { - foreach ($attributes as $attribute => &$value) { - foreach ($this->filters as $filter) { - if (! $this->$filter($tag, $attribute, $value)) { - unset($attributes[$attribute]); - break; - } - } - } - - return $attributes; - } - - /** - * Return true if the value is not empty (remove empty attributes) - * - * @access public - * @param string $tag Tag name - * @param string $attribute Atttribute name - * @param string $value Atttribute value - * @return boolean - */ - public function filterEmptyAttribute($tag, $attribute, $value) - { - return $value !== ''; - } - - /** - * Return true if the value is allowed (remove not allowed attributes) - * - * @access public - * @param string $tag Tag name - * @param string $attribute Atttribute name - * @param string $value Atttribute value - * @return boolean - */ - public function filterAllowedAttribute($tag, $attribute, $value) - { - return isset($this->attribute_whitelist[$tag]) && in_array($attribute, $this->attribute_whitelist[$tag]); - } - - /** - * Return true if the value is not integer (remove attributes that should have an integer value) - * - * @access public - * @param string $tag Tag name - * @param string $attribute Atttribute name - * @param string $value Atttribute value - * @return boolean - */ - public function filterIntegerAttribute($tag, $attribute, $value) - { - if (in_array($attribute, $this->integer_attributes)) { - return ctype_digit($value); - } - - return true; - } - - /** - * Return true if the iframe source is allowed (remove not allowed iframe) - * - * @access public - * @param string $tag Tag name - * @param string $attribute Atttribute name - * @param string $value Atttribute value - * @return boolean - */ - public function filterIframeAttribute($tag, $attribute, $value) - { - if ($tag === 'iframe' && $attribute === 'src') { - - foreach ($this->iframe_whitelist as $url) { - if (strpos($value, $url) === 0) { - return true; - } - } - - return false; - } - - return true; - } - - /** - * Return true if the resource is not blacklisted (remove blacklisted resource attributes) - * - * @access public - * @param string $tag Tag name - * @param string $attribute Atttribute name - * @param string $value Atttribute value - * @return boolean - */ - public function filterBlacklistResourceAttribute($tag, $attribute, $value) - { - if ($this->isResource($attribute) && $this->isBlacklistedMedia($value)) { - return false; - } - - return true; - } - - /** - * Convert all relative links to absolute url - * - * @access public - * @param string $tag Tag name - * @param string $attribute Atttribute name - * @param string $value Atttribute value - * @return boolean - */ - public function rewriteAbsoluteUrl($tag, $attribute, &$value) - { - if ($this->isResource($attribute)) { - $value = Url::resolve($value, $this->website); - } - - return true; - } - - /** - * Rewrite image url to use with a proxy - * - * @access public - * @param string $tag Tag name - * @param string $attribute Atttribute name - * @param string $value Atttribute value - * @return boolean - */ - public function rewriteImageProxyUrl($tag, $attribute, &$value) - { - if ($tag === 'img' && $attribute === 'src') { - - if ($this->image_proxy_url) { - $value = sprintf($this->image_proxy_url, urlencode($value)); - } - else if (is_callable($this->image_proxy_callback)) { - $value = call_user_func($this->image_proxy_callback, $value); - } - } - - return true; - } - - /** - * Return true if the scheme is authorized - * - * @access public - * @param string $tag Tag name - * @param string $attribute Atttribute name - * @param string $value Atttribute value - * @return boolean - */ - public function filterProtocolUrlAttribute($tag, $attribute, $value) - { - if ($this->isResource($attribute) && ! $this->isAllowedProtocol($value)) { - return false; - } - - return true; - } - - /** - * Automatically add/override some attributes for specific tags - * - * @access public - * @param string $tag Tag name - * @param array $attributes Atttributes list - * @return array - */ - public function addAttributes($tag, array $attributes) - { - if (isset($this->add_attributes[$tag])) { - $attributes += $this->add_attributes[$tag]; - } - - return $attributes; - } - - /** - * Return true if all required attributes are present - * - * @access public - * @param string $tag Tag name - * @param array $attributes Atttributes list - * @return boolean - */ - public function hasRequiredAttributes($tag, array $attributes) - { - if (isset($this->required_attributes[$tag])) { - - foreach ($this->required_attributes[$tag] as $attribute) { - if (! isset($attributes[$attribute])) { - return false; - } - } - } - - return true; - } - - /** - * Check if an attribute name is an external resource - * - * @access public - * @param string $attribute Attribute name - * @return boolean - */ - public function isResource($attribute) - { - return in_array($attribute, $this->media_attributes); - } - - /** - * Detect if the protocol is allowed or not - * - * @access public - * @param string $value Attribute value - * @return boolean - */ - public function isAllowedProtocol($value) - { - foreach ($this->scheme_whitelist as $protocol) { - - if (strpos($value, $protocol) === 0) { - return true; - } - } - - return false; - } - - /** - * Detect if an url is blacklisted - * - * @access public - * @param string $resource Attribute value (URL) - * @return boolean - */ - public function isBlacklistedMedia($resource) - { - foreach ($this->media_blacklist as $name) { - - if (strpos($resource, $name) !== false) { - return true; - } - } - - return false; - } - - /** - * Convert the attribute list to html - * - * @access public - * @param array $attributes Attributes - * @return string - */ - public function toHtml(array $attributes) - { - $html = array(); - - foreach ($attributes as $attribute => $value) { - $html[] = sprintf('%s="%s"', $attribute, Filter::escape($value)); - } - - return implode(' ', $html); - } - - /** - * Set whitelisted tags and attributes for each tag - * - * @access public - * @param array $values List of tags: ['video' => ['src', 'cover'], 'img' => ['src']] - * @return Attribute - */ - public function setWhitelistedAttributes(array $values) - { - $this->attribute_whitelist = $values ?: $this->attribute_whitelist; - return $this; - } - - /** - * Set scheme whitelist - * - * @access public - * @param array $values List of scheme: ['http://', 'ftp://'] - * @return Attribute - */ - public function setSchemeWhitelist(array $values) - { - $this->scheme_whitelist = $values ?: $this->scheme_whitelist; - return $this; - } - - /** - * Set media attributes (used to load external resources) - * - * @access public - * @param array $values List of values: ['src', 'href'] - * @return Attribute - */ - public function setMediaAttributes(array $values) - { - $this->media_attributes = $values ?: $this->media_attributes; - return $this; - } - - /** - * Set blacklisted external resources - * - * @access public - * @param array $values List of tags: ['http://google.com/', '...'] - * @return Attribute - */ - public function setMediaBlacklist(array $values) - { - $this->media_blacklist = $values ?: $this->media_blacklist; - return $this; - } - - /** - * Set mandatory attributes for whitelisted tags - * - * @access public - * @param array $values List of tags: ['img' => 'src'] - * @return Attribute - */ - public function setRequiredAttributes(array $values) - { - $this->required_attributes = $values ?: $this->required_attributes; - return $this; - } - - /** - * Set attributes to automatically to specific tags - * - * @access public - * @param array $values List of tags: ['a' => 'target="_blank"'] - * @return Attribute - */ - public function setAttributeOverrides(array $values) - { - $this->add_attributes = $values ?: $this->add_attributes; - return $this; - } - - /** - * Set attributes that must be an integer - * - * @access public - * @param array $values List of tags: ['width', 'height'] - * @return Attribute - */ - public function setIntegerAttributes(array $values) - { - $this->integer_attributes = $values ?: $this->integer_attributes; - return $this; - } - - /** - * Set allowed iframe resources - * - * @access public - * @param array $values List of tags: ['http://www.youtube.com'] - * @return Attribute - */ - public function setIframeWhitelist(array $values) - { - $this->iframe_whitelist = $values ?: $this->iframe_whitelist; - return $this; - } - - /** - * Set image proxy URL - * - * The original image url will be urlencoded - * - * @access public - * @param string $url Proxy URL - * @return Attribute - */ - public function setImageProxyUrl($url) - { - $this->image_proxy_url = $url ?: $this->image_proxy_url; - return $this; - } - - /** - * Set image proxy callback - * - * @access public - * @param \Closure $callback - * @return Attribute - */ - public function setImageProxyCallback($callback) - { - $this->image_proxy_callback = $callback ?: $this->image_proxy_callback; - return $this; - } -} |