diff options
Diffstat (limited to 'vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme')
9 files changed, 445 insertions, 0 deletions
diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/data.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/data.php new file mode 100644 index 0000000..41c49d5 --- /dev/null +++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/data.php @@ -0,0 +1,136 @@ +<?php + +/** + * Implements data: URI for base64 encoded images supported by GD. + */ +class HTMLPurifier_URIScheme_data extends HTMLPurifier_URIScheme +{ + /** + * @type bool + */ + public $browsable = true; + + /** + * @type array + */ + public $allowed_types = array( + // you better write validation code for other types if you + // decide to allow them + 'image/jpeg' => true, + 'image/gif' => true, + 'image/png' => true, + ); + // this is actually irrelevant since we only write out the path + // component + /** + * @type bool + */ + public $may_omit_host = true; + + /** + * @param HTMLPurifier_URI $uri + * @param HTMLPurifier_Config $config + * @param HTMLPurifier_Context $context + * @return bool + */ + public function doValidate(&$uri, $config, $context) + { + $result = explode(',', $uri->path, 2); + $is_base64 = false; + $charset = null; + $content_type = null; + if (count($result) == 2) { + list($metadata, $data) = $result; + // do some legwork on the metadata + $metas = explode(';', $metadata); + while (!empty($metas)) { + $cur = array_shift($metas); + if ($cur == 'base64') { + $is_base64 = true; + break; + } + if (substr($cur, 0, 8) == 'charset=') { + // doesn't match if there are arbitrary spaces, but + // whatever dude + if ($charset !== null) { + continue; + } // garbage + $charset = substr($cur, 8); // not used + } else { + if ($content_type !== null) { + continue; + } // garbage + $content_type = $cur; + } + } + } else { + $data = $result[0]; + } + if ($content_type !== null && empty($this->allowed_types[$content_type])) { + return false; + } + if ($charset !== null) { + // error; we don't allow plaintext stuff + $charset = null; + } + $data = rawurldecode($data); + if ($is_base64) { + $raw_data = base64_decode($data); + } else { + $raw_data = $data; + } + if ( strlen($raw_data) < 12 ) { + // error; exif_imagetype throws exception with small files, + // and this likely indicates a corrupt URI/failed parse anyway + return false; + } + // XXX probably want to refactor this into a general mechanism + // for filtering arbitrary content types + if (function_exists('sys_get_temp_dir')) { + $file = tempnam(sys_get_temp_dir(), ""); + } else { + $file = tempnam("/tmp", ""); + } + file_put_contents($file, $raw_data); + if (function_exists('exif_imagetype')) { + $image_code = exif_imagetype($file); + unlink($file); + } elseif (function_exists('getimagesize')) { + set_error_handler(array($this, 'muteErrorHandler')); + $info = getimagesize($file); + restore_error_handler(); + unlink($file); + if ($info == false) { + return false; + } + $image_code = $info[2]; + } else { + trigger_error("could not find exif_imagetype or getimagesize functions", E_USER_ERROR); + } + $real_content_type = image_type_to_mime_type($image_code); + if ($real_content_type != $content_type) { + // we're nice guys; if the content type is something else we + // support, change it over + if (empty($this->allowed_types[$real_content_type])) { + return false; + } + $content_type = $real_content_type; + } + // ok, it's kosher, rewrite what we need + $uri->userinfo = null; + $uri->host = null; + $uri->port = null; + $uri->fragment = null; + $uri->query = null; + $uri->path = "$content_type;base64," . base64_encode($raw_data); + return true; + } + + /** + * @param int $errno + * @param string $errstr + */ + public function muteErrorHandler($errno, $errstr) + { + } +} diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/file.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/file.php new file mode 100644 index 0000000..215be4b --- /dev/null +++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/file.php @@ -0,0 +1,44 @@ +<?php + +/** + * Validates file as defined by RFC 1630 and RFC 1738. + */ +class HTMLPurifier_URIScheme_file extends HTMLPurifier_URIScheme +{ + /** + * Generally file:// URLs are not accessible from most + * machines, so placing them as an img src is incorrect. + * @type bool + */ + public $browsable = false; + + /** + * Basically the *only* URI scheme for which this is true, since + * accessing files on the local machine is very common. In fact, + * browsers on some operating systems don't understand the + * authority, though I hear it is used on Windows to refer to + * network shares. + * @type bool + */ + public $may_omit_host = true; + + /** + * @param HTMLPurifier_URI $uri + * @param HTMLPurifier_Config $config + * @param HTMLPurifier_Context $context + * @return bool + */ + public function doValidate(&$uri, $config, $context) + { + // Authentication method is not supported + $uri->userinfo = null; + // file:// makes no provisions for accessing the resource + $uri->port = null; + // While it seems to work on Firefox, the querystring has + // no possible effect and is thus stripped. + $uri->query = null; + return true; + } +} + +// vim: et sw=4 sts=4 diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/ftp.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/ftp.php new file mode 100644 index 0000000..1eb43ee --- /dev/null +++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/ftp.php @@ -0,0 +1,58 @@ +<?php + +/** + * Validates ftp (File Transfer Protocol) URIs as defined by generic RFC 1738. + */ +class HTMLPurifier_URIScheme_ftp extends HTMLPurifier_URIScheme +{ + /** + * @type int + */ + public $default_port = 21; + + /** + * @type bool + */ + public $browsable = true; // usually + + /** + * @type bool + */ + public $hierarchical = true; + + /** + * @param HTMLPurifier_URI $uri + * @param HTMLPurifier_Config $config + * @param HTMLPurifier_Context $context + * @return bool + */ + public function doValidate(&$uri, $config, $context) + { + $uri->query = null; + + // typecode check + $semicolon_pos = strrpos($uri->path, ';'); // reverse + if ($semicolon_pos !== false) { + $type = substr($uri->path, $semicolon_pos + 1); // no semicolon + $uri->path = substr($uri->path, 0, $semicolon_pos); + $type_ret = ''; + if (strpos($type, '=') !== false) { + // figure out whether or not the declaration is correct + list($key, $typecode) = explode('=', $type, 2); + if ($key !== 'type') { + // invalid key, tack it back on encoded + $uri->path .= '%3B' . $type; + } elseif ($typecode === 'a' || $typecode === 'i' || $typecode === 'd') { + $type_ret = ";type=$typecode"; + } + } else { + $uri->path .= '%3B' . $type; + } + $uri->path = str_replace(';', '%3B', $uri->path); + $uri->path .= $type_ret; + } + return true; + } +} + +// vim: et sw=4 sts=4 diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/http.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/http.php new file mode 100644 index 0000000..ce69ec4 --- /dev/null +++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/http.php @@ -0,0 +1,36 @@ +<?php + +/** + * Validates http (HyperText Transfer Protocol) as defined by RFC 2616 + */ +class HTMLPurifier_URIScheme_http extends HTMLPurifier_URIScheme +{ + /** + * @type int + */ + public $default_port = 80; + + /** + * @type bool + */ + public $browsable = true; + + /** + * @type bool + */ + public $hierarchical = true; + + /** + * @param HTMLPurifier_URI $uri + * @param HTMLPurifier_Config $config + * @param HTMLPurifier_Context $context + * @return bool + */ + public function doValidate(&$uri, $config, $context) + { + $uri->userinfo = null; + return true; + } +} + +// vim: et sw=4 sts=4 diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/https.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/https.php new file mode 100644 index 0000000..0e96882 --- /dev/null +++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/https.php @@ -0,0 +1,18 @@ +<?php + +/** + * Validates https (Secure HTTP) according to http scheme. + */ +class HTMLPurifier_URIScheme_https extends HTMLPurifier_URIScheme_http +{ + /** + * @type int + */ + public $default_port = 443; + /** + * @type bool + */ + public $secure = true; +} + +// vim: et sw=4 sts=4 diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/mailto.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/mailto.php new file mode 100644 index 0000000..c3a6b60 --- /dev/null +++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/mailto.php @@ -0,0 +1,40 @@ +<?php + +// VERY RELAXED! Shouldn't cause problems, not even Firefox checks if the +// email is valid, but be careful! + +/** + * Validates mailto (for E-mail) according to RFC 2368 + * @todo Validate the email address + * @todo Filter allowed query parameters + */ + +class HTMLPurifier_URIScheme_mailto extends HTMLPurifier_URIScheme +{ + /** + * @type bool + */ + public $browsable = false; + + /** + * @type bool + */ + public $may_omit_host = true; + + /** + * @param HTMLPurifier_URI $uri + * @param HTMLPurifier_Config $config + * @param HTMLPurifier_Context $context + * @return bool + */ + public function doValidate(&$uri, $config, $context) + { + $uri->userinfo = null; + $uri->host = null; + $uri->port = null; + // we need to validate path against RFC 2368's addr-spec + return true; + } +} + +// vim: et sw=4 sts=4 diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/news.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/news.php new file mode 100644 index 0000000..7490927 --- /dev/null +++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/news.php @@ -0,0 +1,35 @@ +<?php + +/** + * Validates news (Usenet) as defined by generic RFC 1738 + */ +class HTMLPurifier_URIScheme_news extends HTMLPurifier_URIScheme +{ + /** + * @type bool + */ + public $browsable = false; + + /** + * @type bool + */ + public $may_omit_host = true; + + /** + * @param HTMLPurifier_URI $uri + * @param HTMLPurifier_Config $config + * @param HTMLPurifier_Context $context + * @return bool + */ + public function doValidate(&$uri, $config, $context) + { + $uri->userinfo = null; + $uri->host = null; + $uri->port = null; + $uri->query = null; + // typecode check needed on path + return true; + } +} + +// vim: et sw=4 sts=4 diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/nntp.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/nntp.php new file mode 100644 index 0000000..f211d71 --- /dev/null +++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/nntp.php @@ -0,0 +1,32 @@ +<?php + +/** + * Validates nntp (Network News Transfer Protocol) as defined by generic RFC 1738 + */ +class HTMLPurifier_URIScheme_nntp extends HTMLPurifier_URIScheme +{ + /** + * @type int + */ + public $default_port = 119; + + /** + * @type bool + */ + public $browsable = false; + + /** + * @param HTMLPurifier_URI $uri + * @param HTMLPurifier_Config $config + * @param HTMLPurifier_Context $context + * @return bool + */ + public function doValidate(&$uri, $config, $context) + { + $uri->userinfo = null; + $uri->query = null; + return true; + } +} + +// vim: et sw=4 sts=4 diff --git a/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/tel.php b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/tel.php new file mode 100644 index 0000000..8cd1933 --- /dev/null +++ b/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIScheme/tel.php @@ -0,0 +1,46 @@ +<?php + +/** + * Validates tel (for phone numbers). + * + * The relevant specifications for this protocol are RFC 3966 and RFC 5341, + * but this class takes a much simpler approach: we normalize phone + * numbers so that they only include (possibly) a leading plus, + * and then any number of digits and x'es. + */ + +class HTMLPurifier_URIScheme_tel extends HTMLPurifier_URIScheme +{ + /** + * @type bool + */ + public $browsable = false; + + /** + * @type bool + */ + public $may_omit_host = true; + + /** + * @param HTMLPurifier_URI $uri + * @param HTMLPurifier_Config $config + * @param HTMLPurifier_Context $context + * @return bool + */ + public function doValidate(&$uri, $config, $context) + { + $uri->userinfo = null; + $uri->host = null; + $uri->port = null; + + // Delete all non-numeric characters, non-x characters + // from phone number, EXCEPT for a leading plus sign. + $uri->path = preg_replace('/(?!^\+)[^\dx]/', '', + // Normalize e(x)tension to lower-case + str_replace('X', 'x', $uri->path)); + + return true; + } +} + +// vim: et sw=4 sts=4 |