I needed my blog to ping/trackback, but in order to do that I needed a function that would discover the correct pingback url for me …
I stumbled uppon:
[url]http://www.tellinya.com/read/2007/10/02/173.html[/url]
[url]http://blog.5ubliminal.com/posts/elhttpclient-evolution-php-curl-http/[/url]
http://www.phpbb.com/community/viewtopic.php?f=70&t=1188835&start=0
And I altered the findXmlRpc function a bit ..
What it does is that it will read the headers send and try to get the x-pingback or pingback header. If that fails it will try a regexp to find a link such as:[code:1:aa2d611070] link rel=”pingback” href=”http://blog.yoursite.com/xmlrpc.php”[/code:1:aa2d611070]
This method has proven itself to many blogs including wordpress based websites!
So here we go:
[b:aa2d611070]Call:[/b:aa2d611070]
[code:1:aa2d611070]$xmlrpc = findXmlRpc($url);
if($xmlrpc === false)
{
// No target url found, bummer 🙁
}
else
{
// do your stuff here
}[/code:1:aa2d611070]
[b:aa2d611070]Class plus function:[/b:aa2d611070]
Direct download: http://www.ramonfincken.com/uploads/topic120.txt
[code:1:aa2d611070]//—————————————————————–
//– Copyright 5ubliminal 2008. (5ubliminal.com)
// http://www.tellinya.com/art2/39/
// You can do anything with it except selling it or claiming it.
// Copyright notice must remain intact and links are appreciated!
// http://www.tellinya.com/read/2007/10/02/173.html
// functions eHttpClient && findXmlRpc slightly modified by Ramon Fincken
// http://www.ramonfincken.com
// http://www.ramonfincken.com/permalink/topic120.html
//—————————————————————–
class eHttpClient {
//–
var $httpRecvHeaders = “”;
var $authUserName = “”;
var $authPassword = “”;
var $cookieJar = “”;
var $selfDestroyCookies = true;
var $curl;
//–
function eHttpClient() {
$this->__construct();
}
function __construct() {
$this->curl = curl_init();
$this->cookieJar = tempnam(’/tmp’, ‘cookie’);
//– If you decide to use persistent cookies UNCOMMENT next line
//$this->cookieJar = str_replace(’\’,’/’,dirname(__FILE__).’/cookies.curl.txt’);
$this->_initCurl();
}
function __destruct() {
curl_close($this->curl);
//– If you decide to use persistent cookies COMMENT next line
unlink($this->cookieJar);
}
function getCookieJar() {
return $this->cookieJar;
}
//– Add your own setting to internal cURL instance
function configCurl($option, $value) {
return curl_setopt($this->curl, $option, $value);
}
//– Enable of disable redirects
function setRedirects($follow = true) {
return $this->configCurl(CURLOPT_FOLLOWLOCATION, $follow);
}
function setTimeout($timeout = 30) {
return $this->configCurl(CURLOPT_TIMEOUT, $timeout);
}
//– Explicitly ask cURL you don’t need the body
function getBody($enable = 1) {
return $this->configCurl(CURLOPT_NOBODY, !$enable);
}
//– Set the refererURL … referer spam 🙂
function setReferer($referer = false) {
return $this->configCurl(CURLOPT_REFERER, $referer);
}
//– Internal … DO NOT USE
function _initCurl() {
$this->configCurl(CURLINFO_HEADER_OUT, 1);
$this->configCurl(CURLOPT_SSL_VERIFYPEER, 0);
$this->configCurl(CURLOPT_SSL_VERIFYHOST, 0);
$this->configCurl(CURLOPT_RETURNTRANSFER, 1);
$this->configCurl(CURLOPT_HEADER, 1);
$this->configCurl(CURLOPT_MUTE, 0);
$this->configCurl(CURLOPT_AUTOREFERER, 1);
$this->configCurl(CURLOPT_FORBID_REUSE, 1);
$this->configCurl(CURLOPT_FRESH_CONNECT, 1);
$this->configCurl(CURLOPT_COOKIEFILE, $this->cookieJar);
$this->configCurl(CURLOPT_COOKIEJAR, $this->cookieJar);
$this->setUserAgent(“ie”);
//$this->setRedirects();
}
//– Predefined values of your own
function setUserAgent($ua) {
if ($ua == “gg”)
$httpUserAgent = “Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)”;
elseif ($ua == “ms”) $httpUserAgent = “msnbot/1.0 (+http://search.msn.com/msnbot.htm)”;
elseif ($ua == “yh”) $httpUserAgent = “Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)”;
elseif ($ua == “ie”) $httpUserAgent = “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; en)”;
elseif ($ua == “ff”) $httpUserAgent = “Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.8.1.8) Gecko/20071008 Firefox/2.0.0.8”;
else
$httpUserAgent = $ua;
return $this->configCurl(CURLOPT_USERAGENT, $httpUserAgent);
}
//– Private … Do Not Use!
function _prepare($verb, $url, $headers, $sysheaders = NULL) {
//–
if ((isset ($sysheaders) && !is_array($sysheaders)) || !isset ($sysheaders)) {
$sysheaders = array ();
}
if ((isset ($headers) && !is_array($headers)) || !isset ($headers)) {
$headers = array ();
}
//–
if (is_array($headers) && count($headers)) {
foreach ($headers as $key => $header) {
if (preg_match(“/([^:]+):s?(.+)?/i”, $header, $pcs)) {
$headers[$pcs[1]] = $pcs[2];
unset ($headers[$key]);
}
}
unset ($headers[“Content-Type”]);
unset ($headers[“Content-Length”]);
}
//–
$this->configCurl(CURLOPT_CUSTOMREQUEST, $verb);
$this->configCurl(CURLOPT_URL, $url);
if (strlen($this->authPassword) && strlen($this->authPassword)) {
$loginInfo = sprintf(“%s:%s”, $this->authUserName, $this->authPassword);
$this->configCurl(CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
$this->configCurl(CURLOPT_USERPWD, $loginInfo);
}
$sendHeaders = $headers;
if (count($sysheaders)) {
$sendHeaders = array_merge($sendHeaders, $sysheaders);
}
$rawHeaders = array (
“Connection: close”
);
if (count($sendHeaders)) {
foreach ($sendHeaders as $key => $vals) {
if (!is_array($vals)) {
array_push($rawHeaders, $key . “: ” . $vals);
continue;
}
$vals = array_unique($vals);
foreach ($vals as $val) {
array_push($rawHeaders, $key . “: ” . $val);
}
}
}
$this->configCurl(CURLOPT_HTTPHEADER, $rawHeaders);
$this->httpRecvHeaders = array ();
}
//– Get a URL. $getdata is an associated array that contains query string variables
//– used with http_build_query
function get($url, $getdata, $headers) {
if ((isset ($getdata) && !is_array($getdata)) || !isset ($getdata)) {
$getdata = array ();
}
if (count($getdata) && ($getdata != false)) {
$getdata = http_build_query($getdata);
$url .= (!strchr($url, ‘?’) ? “?” : “&”) . $getdata;
}
//– nogenius pointed out a bug that was fixed here
//– I forgot to clear content-length after using a post and future gets failed
$this->configCurl(CURLOPT_POSTFIELDS, null);
$this->configCurl(CURLOPT_POSTFIELDSIZE, 0);
$this->_prepare(“GET”, $url, $headers);
return $this->_fetchHtml();
}
//– Get a URL. $getdata is an associated array that contains query string variables
//– used with http_build_query. We use HEAD verb here.
function head($url, $getdata, $headers) {
if ((isset ($getdata) && !is_array($getdata)) || !isset ($getdata)) {
$getdata = array ();
}
if (count($getdata) && ($getdata != false)) {
$getdata = http_build_query($getdata);
$url .= (!strchr($url, ‘?’) ? “?” : “&”) . $getdata;
}
$this->_prepare(“HEAD”, $url, $headers);
return $this->_fetchHtml();
}
//– Get a URL. $getdata is an associated array that contains query string variables
//– used with http_build_query. We use POST verb here.
function post($url, $postdata, $headers, $type = “application/x-www-form-urlencoded”) {
$sendHeaders = array ();
if (is_array($postdata)) {
$postdata = http_build_query($postdata);
$contentType = “application/x-www-form-urlencoded”;
} else {
$contentType = $type;
}
//–
$this->configCurl(CURLOPT_POSTFIELDS, $postdata);
$this->configCurl(CURLOPT_POSTFIELDSIZE, strlen($postdata));
//–
$sendHeaders[“Content-Type”] = $contentType;
$sendHeaders[“Content-Length”] = strlen($postdata);
//– The Class is right not the user!
$this->_prepare(“POST”, $url, $headers, $sendHeaders);
return $this->_fetchHtml();
}
//– Internal … DO NOT USE!
function _parseHeaders($headers) {
if (is_string($headers))
$headers = preg_split(“/[rn]+/”, $headers);
$hdret = array (
“Raw” => array ()
);
$httpinf = $headers[0];
$hdret[’HTTP’] = $httpinf;
array_splice($headers, 0, 1);
foreach ($headers as $hdr) {
$hdr = trim($hdr);
if (!strlen($hdr))
continue;
if (!preg_match(“/([^:]+):(.*)/”, $hdr, $pcs)) {
array_push($hdret[’Raw’], $hdr);
continue;
}
$key = trim($pcs[1]);
$val = trim($pcs[2]);
if (isset ($hdret[$key])) {
if (!is_array($hdret[$key]))
$hdret[$key] = array (
$hdret[$key]
);
array_push($hdret[$key], $val);
} else {
$hdret[$key] = $val;
}
}
if (!count($hdret[’Raw’]))
unset ($hdret[’Raw’]);
return $hdret;
}
//– Internal … DO NOT USE!
function _fetchHtml() {
$html = curl_exec($this->curl);
$inf = $this->getInfo();
$reqsize = $this->getInfo(CURLINFO_HEADER_SIZE);
$req = substr($html, 0, $reqsize);
$req = str_replace(“r”, “”, $req);
$lines = explode(“n”, $req);
$pos = 0;
$reqbkt = array ();
$this->httpRecvHeaders = array ();
while (count($lines)) {
$line = $lines[0];
array_splice($lines, 0, 1);
if (strlen($line) == 0) {
if (!count($reqbkt))
continue;
array_push($this->httpRecvHeaders, $reqbkt);
$reqbkt = array ();
continue;
}
if (!count($reqbkt)) {
if (preg_match(“/^[^s]+s([0-9]+)s.*$/i”, $line, $pcs)) {
$reqbkt[’HTTP’] = $pcs[1];
continue;
}
}
if (!preg_match(“/^([^s:]+):s?(.*)$/i”, $line, $pcs))
continue;
$reqbkt[trim($pcs[1])] = trim($pcs[2]);
}
return substr($html, $reqsize);
}
//– Get the CURL info
function getInfo($cfg = NULL) {
if (!isset ($cfg))
return curl_getinfo($this->curl);
return curl_getinfo($this->curl, $cfg);
}
//– Get Received headers. In case of redirects you will find more then one.
function getHeaders() {
return $this->httpRecvHeaders;
}
//– Get last header. In case of redirects you will find last one.
function getHeader() {
$hdr = array_pop($this->httpRecvHeaders);
array_push($this->httpRecvHeaders, $hdr);
return $hdr;
}
//– Get the exact sent headers … good for debugging
function getSentHeaders() {
$sentHeaders = curl_getinfo($this->curl, CURLINFO_HEADER_OUT);
return $this->_parseHeaders($sentHeaders);
}
//– HTTP AUTH data for … cPanel or WordTracker Login 🙂
function setAuth($user, $pass) {
if (func_num_args() == 0) {
return $this->resetAuth();
}
if (!strlen($user) || !strlen($pass))
return;
$this->authUserName = $user;
$this->authPassword = $pass;
}
//– Clear HTTP Auth Data
function resetAuth() {
$this->authUserName = “”;
$this->authPassword = “”;
}
//– For more info comment form is below. If you like it … link back 🙂
};
//—————————————————————–
// This is the autodiscovery of XMLRPC client. Cannot be used alone. Needs eHttpClient class !
// functions eHttpClient && findXmlRpc slightly modified by Ramon Fincken
// http://www.ramonfincken.com
// http://www.ramonfincken.com/permalink/topic120.html
function findXmlRpc($target) {
$hc = new eHttpClient();
$html = $hc->get($target, 0, 1);
$hdr = $hc->getHeader();
if (isset ($hdr[’X-Pingback’])) return $hdr[’X-Pingback’];
// Backup header
if (isset ($header[’x-pingback’]))
return $header[’x-pingback’];
$pingback_str_dquote = ‘rel=”pingback”’;
$pingback_str_squote = ‘rel=’pingback”;
/** @todo Should use Filter Extension or custom preg_match instead. */
$parsed_url = parse_url($target);
if (!isset ($parsed_url[’host’])) // Not an URL. This should never happen.
return false;
// Not an (x)html, sgml, or xml page, no use going further.
if (isset ($header[’content-type’]) && preg_match(’#(image|audio|video|model)/#is’, $header[’content-type’]))
return false;
$contents = $html;
$pingback_link_offset_dquote = strpos($contents, $pingback_str_dquote);
$pingback_link_offset_squote = strpos($contents, $pingback_str_squote);
if ($pingback_link_offset_dquote || $pingback_link_offset_squote) {
$quote = ($pingback_link_offset_dquote) ? ‘”’ : ”’;
$pingback_link_offset = ($quote == ‘”’) ? $pingback_link_offset_dquote : $pingback_link_offset_squote;
$pingback_href_pos = @ strpos($contents, ‘href=’, $pingback_link_offset);
$pingback_href_start = $pingback_href_pos +6;
$pingback_href_end = @ strpos($contents, $quote, $pingback_href_start);
$pingback_server_url_len = $pingback_href_end – $pingback_href_start;
$pingback_server_url = substr($contents, $pingback_href_start, $pingback_server_url_len);
// We may find rel=”pingback” but an incomplete pingback URL
if ($pingback_server_url_len > 0) { // We got it!
return $pingback_server_url;
}
}
return false;
}[/code:1:aa2d611070]
[b:aa2d611070]Related topic for phpbb3:[/b:aa2d611070]
http://www.phpbb.com/community/viewtopic.php?f=70&t=1188835&start=0
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