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added discover_pingback_server_uri, should dramatically speed things up
git-svn-id: http://svn.automattic.com/wordpress/trunk@1709 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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michelvaldrighi
parent
ee856b3497
commit
f6c1bcc60b
@ -638,17 +638,13 @@ function pingback($content, $post_ID) {
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// original code by Mort (http://mort.mine.nu:8080)
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$log = debug_fopen('./pingback.log', 'a');
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$post_links = array();
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debug_fwrite($log, 'BEGIN '.time()."\n");
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debug_fwrite($log, 'BEGIN '.date('YmdHis', time())."\n");
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// Variables
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$ltrs = '\w';
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$gunk = '/#~:.?+=&%@!\-';
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$punc = '.:?\-';
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$any = $ltrs.$gunk.$punc;
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$pingback_str_dquote = 'rel="pingback"';
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$pingback_str_squote = 'rel=\'pingback\'';
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$x_pingback_str = 'x-pingback: ';
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$pingback_href_original_pos = 27;
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// Step 1
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// Parsing the post, external links (if any) are stored in the $post_links array
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@ -679,78 +675,11 @@ function pingback($content, $post_ID) {
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}
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foreach ($post_links as $pagelinkedto){
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debug_fwrite($log, 'Processing -- '.$pagelinkedto."\n\n");
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$bits = parse_url($pagelinkedto);
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if (!isset($bits['host'])) {
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debug_fwrite($log, 'Couldn\'t find a hostname for '.$pagelinkedto."\n\n");
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continue;
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}
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$host = $bits['host'];
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$path = isset($bits['path']) ? $bits['path'] : '';
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if (isset($bits['query'])) {
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$path .= '?'.$bits['query'];
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}
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if (!$path) {
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$path = '/';
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}
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$port = isset($bits['port']) ? $bits['port'] : 80;
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debug_fwrite($log, "Processing -- $pagelinkedto\n");
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$pingback_server_url = discover_pingback_server_uri($pagelinkedto, 2048);
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// Try to connect to the server at $host
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$fp = fsockopen($host, $port, $errno, $errstr, 3);
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if (!$fp) {
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debug_fwrite($log, 'Couldn\'t open a connection to '.$host."\n\n");
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continue;
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}
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// Send the GET request
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$request = "GET $path HTTP/1.1\r\nHost: $host\r\nUser-Agent: WordPress/$wp_version PHP/" . phpversion() . "\r\n\r\n";
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ob_end_flush();
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fputs($fp, $request);
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// Start receiving headers and content
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$contents = '';
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$headers = '';
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$gettingHeaders = true;
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$found_pingback_server = 0;
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while (!feof($fp)) {
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$line = fgets($fp, 4096);
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if (trim($line) == '') {
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$gettingHeaders = false;
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}
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if (!$gettingHeaders) {
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$contents .= trim($line)."\n";
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$pingback_link_offset_dquote = strpos($contents, $pingback_str_dquote);
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$pingback_link_offset_squote = strpos($contents, $pingback_str_squote);
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} else {
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$headers .= trim($line)."\n";
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$x_pingback_header_offset = strpos(strtolower($headers), $x_pingback_str);
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}
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if ($x_pingback_header_offset) {
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preg_match('#x-pingback: (.+)#is', $headers, $matches);
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$pingback_server_url = trim($matches[1]);
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debug_fwrite($log, "Pingback server found from X-Pingback header @ $pingback_server_url\n");
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$found_pingback_server = 1;
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break;
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}
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if ($pingback_link_offset_dquote || $pingback_link_offset_squote) {
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$quote = ($pingback_link_offset_dquote) ? '"' : '\'';
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$pingback_link_offset = ($quote=='"') ? $pingback_link_offset_dquote : $pingback_link_offset_squote;
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$pingback_href_pos = @strpos($contents, 'href=', $pingback_link_offset);
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$pingback_href_start = $pingback_href_pos+6;
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$pingback_href_end = @strpos($contents, $quote, $pingback_href_start);
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$pingback_server_url_len = $pingback_href_end-$pingback_href_start;
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$pingback_server_url = substr($contents, $pingback_href_start, $pingback_server_url_len);
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debug_fwrite($log, "Pingback server found from Pingback <link /> tag @ $pingback_server_url\n");
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$found_pingback_server = 1;
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break;
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}
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}
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if (!$found_pingback_server) {
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debug_fwrite($log, "Pingback server not found\n\n*************************\n\n");
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@fclose($fp);
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} else {
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if($pingback_server_url) {
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// Now, the RPC call
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$method = 'pingback.ping';
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@ -778,6 +707,96 @@ function pingback($content, $post_ID) {
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debug_fclose($log);
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}
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function discover_pingback_server_uri($url, $timeout_bytes = 2048) {
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$byte_count = 0;
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$contents = '';
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$headers = '';
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$pingback_str_dquote = 'rel="pingback"';
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$pingback_str_squote = 'rel=\'pingback\'';
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$x_pingback_str = 'x-pingback: ';
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$pingback_href_original_pos = 27;
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extract(parse_url($url));
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if (!isset($host)) {
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// Not an URL. This should never happen.
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return false;
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}
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$path = (!isset($path)) ? '/' : $path;
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$path .= (isset($query)) ? '?'.$query : '';
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$port = (isset($port)) ? $port : 80;
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// Try to connect to the server at $host
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$fp = fsockopen($host, $port, $errno, $errstr, 3);
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if (!$fp) {
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// Couldn't open a connection to $host;
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return false;
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}
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// Send the GET request
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$request = "GET $path HTTP/1.1\r\nHost: $host\r\nUser-Agent: WordPress/$wp_version PHP/" . phpversion() . "\r\n\r\n";
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ob_end_flush();
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fputs($fp, $request);
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// Let's check for an X-Pingback header first
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while (!feof($fp)) {
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$line = fgets($fp, 512);
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if (trim($line) == '') {
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break;
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}
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$headers .= trim($line)."\n";
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$x_pingback_header_offset = strpos(strtolower($headers), $x_pingback_str);
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if ($x_pingback_header_offset) {
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// We got it!
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preg_match('#x-pingback: (.+)#is', $headers, $matches);
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$pingback_server_url = trim($matches[1]);
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return $pingback_server_url;
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}
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if(strpos(strtolower($headers), 'content-type: ')) {
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preg_match('#content-type: (.+)#is', $headers, $matches);
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$content_type = trim($matches[1]);
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}
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}
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if (preg_match('#(image|audio|video|model)/#is', $content_type)) {
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// Not an (x)html, sgml, or xml page, no use going further
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return false;
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}
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while (!feof($fp)) {
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$line = fgets($fp, 1024);
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$contents .= trim($line);
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$pingback_link_offset_dquote = strpos($contents, $pingback_str_dquote);
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$pingback_link_offset_squote = strpos($contents, $pingback_str_squote);
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if ($pingback_link_offset_dquote || $pingback_link_offset_squote) {
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$quote = ($pingback_link_offset_dquote) ? '"' : '\'';
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$pingback_link_offset = ($quote=='"') ? $pingback_link_offset_dquote : $pingback_link_offset_squote;
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$pingback_href_pos = @strpos($contents, 'href=', $pingback_link_offset);
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$pingback_href_start = $pingback_href_pos+6;
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$pingback_href_end = @strpos($contents, $quote, $pingback_href_start);
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$pingback_server_url_len = $pingback_href_end - $pingback_href_start;
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$pingback_server_url = substr($contents, $pingback_href_start, $pingback_server_url_len);
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// We may find rel="pingback" but an incomplete pingback URI
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if ($pingback_server_url_len > 0) {
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// We got it!
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return $pingback_server_url;
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}
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}
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$byte_count += strlen($line);
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if ($byte_count > $timeout_bytes) {
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// It's no use going further, there probably isn't any pingback
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// server to find in this file. (Prevents loading large files.)
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return false;
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}
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}
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// We didn't find anything.
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return false;
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}
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/* wp_set_comment_status:
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part of otaku42's comment moderation hack
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changes the status of a comment according to $comment_status.
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