Commit 9a9a0ae5 authored by Evan Prodromou's avatar Evan Prodromou

add cURL client with HEAD method

parent bb4b0706
n<?php
/**
* Laconica, the distributed open-source microblogging tool
*
* Utility class for wrapping Curl
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category HTTP
* @package Laconica
* @author Evan Prodromou <evan@status.net>
* @copyright 2009 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
if (!defined('STATUSNET')) {
exit(1);
}
define(CURLCLIENT_VERSION, "0.1");
/**
* Wrapper for Curl
*
* Makes Curl HTTP client calls within our HTTPClient framework
*
* @category HTTP
* @package Laconica
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
class CurlClient extends HTTPClient
{
function __construct()
{
}
function head($url, $headers=null)
{
$ch = curl_init($url);
$this->setup($ch);
curl_setopt_array($ch,
array(CURLOPT_NOBODY => true));
$result = curl_exec($ch);
return $this->parseResults($result);
}
function setup($ch)
{
curl_setopt_array($ch,
array(CURLOPT_USERAGENT, $this->userAgent(),
CURLOPT_HEADER => true,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => $headers));
}
function userAgent()
{
$version = curl_version();
return parent::userAgent() . " CurlClient/".CURLCLIENT_VERSION . " cURL/" . $version['version'];
}
function parseResults($results)
{
$resp = new HTTPResponse();
$lines = explode("\r\n", $results);
if (preg_match("#^HTTP/1.[01] (\d\d\d) .+$#", $lines[0], $match)) {
$resp->code = $match[1];
} else {
throw Exception("Bad format: initial line is not HTTP status line");
}
$lastk = null;
for ($i = 1; $i < count($lines); $i++) {
$l =& $lines[$i];
if (mb_strlen($l) == 0) {
$resp->body = implode("\r\n", array_slice($lines, $i + 1));
break;
}
if (preg_match("#^(\S+):\s+(.*)$#", $l, $match)) {
$k = $match[1];
$v = $match[2];
if (array_key_exists($k, $resp->headers)) {
if (is_array($resp->headers[$k])) {
$resp->headers[$k][] = $v;
} else {
$resp->headers[$k] = array($resp->headers[$k], $v);
}
} else {
$resp->headers[$k] = $v;
}
$lastk = $k;
} else if (preg_match("#^\s+(.*)$#", $l, $match)) {
// continuation line
if (is_null($lastk)) {
throw Exception("Bad format: initial whitespace in headers");
}
$h =& $resp->headers[$lastk];
if (is_array($h)) {
$n = count($h);
$h[$n-1] .= $match[1];
} else {
$h .= $match[1];
}
}
}
return $resp;
}
}
......@@ -47,9 +47,9 @@ if (!defined('STATUSNET')) {
class HTTPResponse
{
var $code = null;
var $headers = null;
var $body = null;
public $code = null;
public $headers = null;
public $body = null;
}
/**
......
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