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<?php
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/* $Id: microid.module,v 1.1 2007/09/11 12:18:26 digitalspaghetti Exp $ */
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/**
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* @file
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* The MicroID Module generates a microid class and meta tag
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* See the specs for MicroID at http://microid.org
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* See this module in action at http://digitalspaghetti.me.uk
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*/
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function microid_help($section=''){
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$output = '';
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switch ($section){
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case "admin/help#microid":
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$output = '<p>'. t("This module creates a MicroID and embeds it in users posts."). '</p>';
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break;
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case "admin/modules#description":
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$output = '<p>'. t("This module creates a MicroID and embeds it in users posts."). '</p>';
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break;
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}
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return $output;
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}
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function microid_perm(){
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return array('access content');
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}
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/**
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* function microid_genhash($email, $url)
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* This function generates the hash from
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* The users email and profile_homepage
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*/
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function generate($identity, $service, $algorithm = 'sha1', $legacy = false) {
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$microid = "";
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// add uritypes and algorithm if not using legacy mode
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if (!$legacy) {
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$microid .= substr($identity, 0, strpos($identity, ':')) . "+" .
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substr($service, 0, strpos($service, ':')) . ":" .
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strtolower($algorithm) . ":";
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}
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// try message digest engine
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if (function_exists('hash')) {
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if (in_array(strtolower($algorithm), hash_algos())) {
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return $microid .= hash($algorithm, hash($algorithm, $identity) . hash($algorithm, $service));
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}
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}
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// try mhash engine
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if (function_exists('mhash')) {
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$hash_method = @constant('MHASH_' . strtoupper($algorithm));
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if ($hash_method != null) {
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$identity_hash = bin2hex(mhash($hash_method, $identity));
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$service_hash = bin2hex(mhash($hash_method, $service));
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return $microid .= bin2hex(mhash($hash_method, $identity_hash . $service_hash));
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}
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}
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// direct string function
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if (function_exists($algorithm)) {
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return $microid .= $algorithm($algorithm($identity) . $algorithm($service));
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}
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error_log("MicroID: unable to find adequate function for algorithm '$algorithm'");
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}
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function microid_nodeapi(&$node, $op, $teaser = NULL, $page = NULL){
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switch($op) {
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case 'load':
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$nauthor = user_load(array('uid' => $node->uid));
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return array('user_email' => $nauthor->mail);
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break;
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case 'view':
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//watchdog('DS','<pre>'. print_r($node,true) .'</pre>');
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$hashurl = "http://" . $_SERVER["SERVER_NAME"] . "/node/" . $node->nid;
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$email = $node->user_email;
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$hash = generate($email, $hashurl);
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if ($page && !$teaser){
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drupal_set_html_head('<meta name="microid" content="mailto' . $hash . '" />');
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}
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drupal_add_js('$(function(){$("#node-' . $node->nid . '").addClass("microid-mailto' . $hash . '")});', 'inline');
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break;
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}
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}
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/*function microid_comment($a1 = NULL, $op){
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switch($op) {
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case 'load':
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$cauthor = user_load(array('uid' => $comment->uid));
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return array('user_email' => $cauthor->email, 'user_homepage' => $cauthor->profile_homepage);
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break;
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case 'view':
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if ($comment->uid > 0){
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$hash = microid_genhash($comment->user_email, $comment->user_homepage);
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drupal_add_js('$(function(){$("a[@id*=comment]").addClass("microid-' . $hash . '")});', 'inline');
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}
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break;
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}
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}*/
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