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17515512: JanRain php-openid library included, normalization fix
git-svn-id: http://xe-core.googlecode.com/svn/sandbox@5137 201d5d3c-b55e-5fd7-737f-ddc643e51545
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219 changed files with 41415 additions and 10 deletions
243
modules/member/php-openid-1.2.3/Auth/OpenID/TrustRoot.php
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243
modules/member/php-openid-1.2.3/Auth/OpenID/TrustRoot.php
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<?php
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/**
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* Functions for dealing with OpenID trust roots
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*
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* PHP versions 4 and 5
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*
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* LICENSE: See the COPYING file included in this distribution.
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*
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* @package OpenID
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* @author JanRain, Inc. <openid@janrain.com>
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* @copyright 2005 Janrain, Inc.
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* @license http://www.gnu.org/copyleft/lesser.html LGPL
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*/
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/**
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* A regular expression that matches a domain ending in a top-level domains.
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* Used in checking trust roots for sanity.
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*
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* @access private
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*/
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define('Auth_OpenID___TLDs',
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'/\.(com|edu|gov|int|mil|net|org|biz|info|name|museum|coop|aero|ac|' .
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'ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|az|ba|bb|bd|be|bf|bg|' .
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'bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|' .
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'cm|cn|co|cr|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|' .
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'fi|fj|fk|fm|fo|fr|ga|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|' .
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'gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|' .
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'ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|' .
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'ma|mc|md|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|' .
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'nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|' .
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'ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|' .
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'so|sr|st|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|' .
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'ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)$/');
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/**
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* A wrapper for trust-root related functions
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*/
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class Auth_OpenID_TrustRoot {
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/**
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* Parse a URL into its trust_root parts.
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*
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* @static
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*
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* @access private
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*
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* @param string $trust_root The url to parse
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*
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* @return mixed $parsed Either an associative array of trust root
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* parts or false if parsing failed.
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*/
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function _parse($trust_root)
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{
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$parts = @parse_url($trust_root);
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if ($parts === false) {
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return false;
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}
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$required_parts = array('scheme', 'host');
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$forbidden_parts = array('user', 'pass', 'fragment');
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$keys = array_keys($parts);
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if (array_intersect($keys, $required_parts) != $required_parts) {
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return false;
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}
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if (array_intersect($keys, $forbidden_parts) != array()) {
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return false;
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}
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// Return false if the original trust root value has more than
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// one port specification.
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if (preg_match("/:\/\/[^:]+(:\d+){2,}(\/|$)/", $trust_root)) {
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return false;
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}
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$scheme = strtolower($parts['scheme']);
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$allowed_schemes = array('http', 'https');
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if (!in_array($scheme, $allowed_schemes)) {
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return false;
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}
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$parts['scheme'] = $scheme;
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$host = strtolower($parts['host']);
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$hostparts = explode('*', $host);
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switch (count($hostparts)) {
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case 1:
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$parts['wildcard'] = false;
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break;
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case 2:
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if ($hostparts[0] ||
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($hostparts[1] && substr($hostparts[1], 0, 1) != '.')) {
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return false;
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}
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$host = $hostparts[1];
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$parts['wildcard'] = true;
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break;
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default:
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return false;
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}
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if (strpos($host, ':') !== false) {
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return false;
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}
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$parts['host'] = $host;
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if (isset($parts['path'])) {
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$path = strtolower($parts['path']);
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if (substr($path, -1) != '/') {
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$path .= '/';
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}
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} else {
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$path = '/';
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}
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$parts['path'] = $path;
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if (!isset($parts['port'])) {
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$parts['port'] = false;
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}
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return $parts;
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}
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/**
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* Is this trust root sane?
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*
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* A trust root is sane if it is syntactically valid and it has a
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* reasonable domain name. Specifically, the domain name must be
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* more than one level below a standard TLD or more than two
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* levels below a two-letter tld.
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*
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* For example, '*.com' is not a sane trust root, but '*.foo.com'
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* is. '*.co.uk' is not sane, but '*.bbc.co.uk' is.
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*
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* This check is not always correct, but it attempts to err on the
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* side of marking sane trust roots insane instead of marking
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* insane trust roots sane. For example, 'kink.fm' is marked as
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* insane even though it "should" (for some meaning of should) be
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* marked sane.
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*
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* This function should be used when creating OpenID servers to
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* alert the users of the server when a consumer attempts to get
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* the user to accept a suspicious trust root.
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*
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* @static
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* @param string $trust_root The trust root to check
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* @return bool $sanity Whether the trust root looks OK
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*/
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function isSane($trust_root)
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{
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$parts = Auth_OpenID_TrustRoot::_parse($trust_root);
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if ($parts === false) {
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return false;
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}
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// Localhost is a special case
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if ($parts['host'] == 'localhost') {
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return true;
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}
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// Get the top-level domain of the host. If it is not a valid TLD,
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// it's not sane.
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preg_match(Auth_OpenID___TLDs, $parts['host'], $matches);
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if (!$matches) {
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return false;
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}
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$tld = $matches[1];
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// Require at least two levels of specificity for non-country
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// tlds and three levels for country tlds.
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$elements = explode('.', $parts['host']);
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$n = count($elements);
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if ($parts['wildcard']) {
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$n -= 1;
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}
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if (strlen($tld) == 2) {
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$n -= 1;
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}
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if ($n <= 1) {
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return false;
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}
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return true;
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}
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/**
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* Does this URL match the given trust root?
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*
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* Return whether the URL falls under the given trust root. This
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* does not check whether the trust root is sane. If the URL or
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* trust root do not parse, this function will return false.
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*
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* @param string $trust_root The trust root to match against
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*
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* @param string $url The URL to check
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*
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* @return bool $matches Whether the URL matches against the
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* trust root
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*/
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function match($trust_root, $url)
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{
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$trust_root_parsed = Auth_OpenID_TrustRoot::_parse($trust_root);
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$url_parsed = Auth_OpenID_TrustRoot::_parse($url);
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if (!$trust_root_parsed || !$url_parsed) {
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return false;
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}
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// Check hosts matching
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if ($url_parsed['wildcard']) {
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return false;
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}
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if ($trust_root_parsed['wildcard']) {
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$host_tail = $trust_root_parsed['host'];
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$host = $url_parsed['host'];
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if ($host_tail &&
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substr($host, -(strlen($host_tail))) != $host_tail &&
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substr($host_tail, 1) != $host) {
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return false;
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}
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} else {
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if ($trust_root_parsed['host'] != $url_parsed['host']) {
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return false;
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}
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}
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// Check path and query matching
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$base_path = $trust_root_parsed['path'];
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$path = $url_parsed['path'];
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if (!isset($trust_root_parsed['query'])) {
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if (substr($path, 0, strlen($base_path)) != $base_path) {
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return false;
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}
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} else {
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$base_query = $trust_root_parsed['query'];
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$query = @$url_parsed['query'];
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$qplus = substr($query, 0, strlen($base_query) + 1);
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$bqplus = $base_query . '&';
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if ($base_path != $path ||
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($base_query != $query && $qplus != $bqplus)) {
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return false;
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}
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}
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// The port and scheme need to match exactly
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return ($trust_root_parsed['scheme'] == $url_parsed['scheme'] &&
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$url_parsed['port'] === $trust_root_parsed['port']);
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}
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}
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?>
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