<?php
class HttpClient
{
// Request vars
var $host;
var $port;
var $path;
var $method;
var $postdata = '';
var $cookies = array();
var $referer;
var $accept = 'text/xml,application/xml,application/xhtml+xml,text/html,text/plain,image/png,image/jpeg,image/gif,*/*';
var $accept_encoding = 'gzip';
var $accept_language = 'en-us';
var $user_agent = 'Incutio HttpClient v0.9';
var $timeout = 20;
var $use_gzip = true;
var $persist_cookies = true;
var $persist_referers = true;
var $debug = false;
var $handle_redirects = true;
var $max_redirects = 5;
var $headers_only = false;
var $username;
var $password;
var $status;
var $headers = array();
var $content = '';
var $errormsg;
var $redirect_count = 0;
var $cookie_host = '';
function __construct($host, $port = 80)
{
$this->host = $host;
$this->port = $port;
}
function get($path, $data = false)
{
$this->path = $path;
$this->method = 'GET';
if ($data) {
$this->path .= '?' . $this->buildQueryString($data);
}
return $this->doRequest();
}
function post($path, $data)
{
$this->path = $path;
$this->method = 'POST';
$this->postdata = $this->buildQueryString($data);
return $this->doRequest();
}
function buildQueryString($data)
{
$querystring = '';
if (is_array($data)) {
foreach ($data as $key => $val) {
if (is_array($val)) {
foreach ($val as $val2) {
$querystring .= urlencode($key) . '=' . urlencode($val2) . '&';
}
} else {
$querystring .= urlencode($key) . '=' . urlencode($val) . '&';
}
}
$querystring = substr($querystring, 0, -1); // Eliminate unnecessary &
} else {
$querystring = $data;
}
return $querystring;
}
function doRequest()
{
if (!$fp = @fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout)) {
switch ($errno) {
case -3:
$this->errormsg = 'Socket creation failed (-3)';
case -4:
$this->errormsg = 'DNS lookup failure (-4)';
case -5:
$this->errormsg = 'Connection refused or timed out (-5)';
default:
$this->errormsg = 'Connection failed (' . $errno . ')';
$this->errormsg .= ' ' . $errstr;
$this->debug($this->errormsg);
}
return false;
}
socket_set_timeout($fp, $this->timeout);
$request = $this->buildRequest();
$this->debug('Request', $request);
fwrite($fp, $request);
$this->headers = array();
$this->content = '';
$this->errormsg = '';
$inHeaders = true;
$atStart = true;
while (!feof($fp)) {
$line = fgets($fp, 4096);
if ($atStart) {
$atStart = false;
if (!preg_match('/HTTP\/(\\d\\.\\d)\\s*(\\d+)\\s*(.*)/', $line, $m)) {
$this->errormsg = "Status code line invalid: " . htmlentities($line);
$this->debug($this->errormsg);
return false;
}
$http_version = $m[1];
$this->status = $m[2];
$status_string = $m[3];
$this->debug(trim($line));
continue;
}
if ($inHeaders) {
if (trim($line) == '') {
$inHeaders = false;
$this->debug('Received Headers', $this->headers);
if ($this->headers_only) {
break;
}
continue;
}
if (!preg_match('/([^:]+):\\s*(.*)/', $line, $m)) {
continue;
}
$key = strtolower(trim($m[1]));
$val = trim($m[2]);
if (isset($this->headers[$key])) {
if (is_array($this->headers[$key])) {
$this->headers[$key][] = $val;
} else {
$this->headers[$key] = array($this->headers[$key], $val);
}
} else {
$this->headers[$key] = $val;
}
continue;
}
$this->content .= $line;
}
fclose($fp);
if (isset($this->headers['content-encoding']) && $this->headers['content-encoding'] == 'gzip') {
$this->debug('Content is gzip encoded, unzipping it');
$this->content = substr($this->content, 10);
$this->content = gzinflate($this->content);
}
if ($this->persist_cookies && isset($this->headers['set-cookie']) && $this->host == $this->cookie_host) {
$cookies = $this->headers['set-cookie'];
if (!is_array($cookies)) {
$cookies = array($cookies);
}
foreach ($cookies as $cookie) {
if (preg_match('/([^=]+)=([^;]+);/', $cookie, $m)) {
$this->cookies[$m[1]] = $m[2];
}
}
$this->cookie_host = $this->host;
}
if ($this->persist_referers) {
$this->debug('Persisting referer: ' . $this->getRequestURL());
$this->referer = $this->getRequestURL();
}
if ($this->handle_redirects) {
if (++$this->redirect_count >= $this->max_redirects) {
$this->errormsg = 'Number of redirects exceeded maximum (' . $this->max_redirects . ')';
$this->debug($this->errormsg);
$this->redirect_count = 0;
return false;
}
$location = isset($this->headers['location']) ? $this->headers['location'] : '';
$uri = isset($this->headers['uri']) ? $this->headers['uri'] : '';
if ($location || $uri) {
$url = parse_url($location . $uri);
return $this->get($url['path']);
}
}
return true;
}
function buildRequest()
{
$headers = array();
$headers[] = "{$this->method} {$this->path} HTTP/1.0";
$headers[] = "Host: {$this->host}";
$headers[] = "User-Agent: {$this->user_agent}";
$headers[] = "Accept: {$this->accept}";
if ($this->use_gzip) {
$headers[] = "Accept-encoding: {$this->accept_encoding}";
}
$headers[] = "Accept-language: {$this->accept_language}";
if ($this->referer) {
$headers[] = "Referer: {$this->referer}";
}
if ($this->cookies) {
$cookie = 'Cookie: ';
foreach ($this->cookies as $key => $value) {
$cookie .= "$key=$value; ";
}
$headers[] = $cookie;
}
if ($this->username && $this->password) {
$headers[] = 'Authorization: BASIC ' . base64_encode($this->username . ':' . $this->password);
}
if ($this->postdata) {
$headers[] = 'Content-Type: application/x-www-form-urlencoded';
$headers[] = 'Content-Length: ' . strlen($this->postdata);
}
$request = implode("\r\n", $headers) . "\r\n\r\n" . $this->postdata;
return $request;
}
function getStatus()
{
return $this->status;
}
function getContent()
{
return $this->content;
}
function getHeaders()
{
return $this->headers;
}
function getHeader($header)
{
$header = strtolower($header);
if (isset($this->headers[$header])) {
return $this->headers[$header];
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