egroupware/phpgwapi/inc/class.network.inc.php

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<?php
/**************************************************************************\
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* phpGroupWare API - Network *
* This file written by Mark Peters <skeeter@phpgroupware.org> *
* Handles opening network socket connections, taking proxy into account *
* Copyright (C) 2000, 2001 Mark Peters *
* -------------------------------------------------------------------------*
* This library is part of the phpGroupWare API *
* http://www.phpgroupware.org/api *
* ------------------------------------------------------------------------ *
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* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, *
* or any later version. *
* This library 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 Lesser General Public License for more details. *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
\**************************************************************************/
/* $Id$ */
class network
{
var $socket;
var $addcrlf = TRUE;
var $error;
var $errorset = 0;
function network($addcrlf=true)
{
$this->errorset = 0;
$this->set_addcrlf($addcrlf);
}
function set_addcrlf($value)
{
$this->addcrlf = $value;
}
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function add_crlf($str)
{
if($this->addcrlf) {
$str .= "\r\n";
}
return $str;
}
function set_error($code,$msg,$desc)
{
$this->error = array("code","msg","desc");
$this->error["code"] = $code;
$this->error["msg"] = $msg;
$this->error["desc"] = $desc;
// $this->close_port();
$this->errorset = 1;
return 0;
}
function open_port($server,$port,$timeout=15)
{
global $phpgw_info;
switch($port) {
case 80:
case 443:
if((isset($phpgw_info["server"]["httpproxy_server"]) && $phpgw_info["server"]["httpproxy_server"]) &&
(isset($phpgw_info["server"]["httpproxy_port"]) && $phpgw_info["server"]["httpproxy_port"])) {
$server = $phpgw_info["server"]["httpproxy_server"];
$port = (int)$phpgw_info["server"]["httpproxy_port"];
}
break;
}
if(floor(phpversion()) == 4)
$this->socket = fsockopen($server,$port,&$errcode,&$errmsg,$timeout);
else
$this->socket = fsockopen($server,$port,&$errcode,&$errmsg);
if (!$this->socket) {
return $this->set_error("Error","$errcode:$errmsg","Connection to $server:$port failed - could not open socket.");
} else {
return 1;
}
}
function close_port()
{
return fclose($this->socket);
}
function read_port()
{
return fgets($this->socket, 1024);
}
function bs_read_port($bytes)
{
return fread($this->socket, $bytes);
}
function write_port($str)
{
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$ok = fputs($this->socket,$this->add_crlf($str));
if (!$ok)
{
return $this->set_error("Error","Connection Lost","lost connection to server");
} else {
return 1;
}
}
function bs_write_port($str,$bytes=0)
{
if ($bytes)
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$ok = fwrite($this->socket,$this->add_crlf($str),$bytes);
else
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$ok = fwrite($this->socket,$this->add_crlf($str));
if (!$ok)
{
return $this->set_error("Error","Connection Lost","lost connection to server");
} else {
return 1;
}
}
function msg2socket($str,$expected_response,$response)
{
if(!$this->socket && substr($expected_response,1,1) == "+") {
return $this->set_error("521",
"socket does not exist",
"The required socket does not exist. The settings for your mail server may be wrong.");
}
if (!$this->write_port($str)) {
if(substr($expected_response,1,1) == "+") {
return $this->set_error("420",
"lost connection",
"Lost connection to pop server.");
} else {
return 0;
}
}
$response = $this->read_port();
if (!ereg(strtoupper($expected_response),strtoupper($response))) {
if(substr($expected_response,1,1) == "+") {
return $this->set_error("550",
"",
"");
}
$pos = strpos(" ",$response);
return $this->set_error(substr($response,0,$pos),
"invalid response($expected_response)",
substr($response,($pos + 1),(strlen($response)-$pos)));
} else {
return 1;
}
}
// return contents of a web url as an array or false if timeout
function gethttpsocketfile($file)
{
global $phpgw_info;
$server = str_replace("http://","",$file);
$file = strstr($server,"/");
$server = str_replace("$file","",$server);
if ($phpgw_info["server"]["httpproxy_server"]) {
if ($this->open_port($server,80, 15)) {
if (! $this->write_port("GET http://" . $server . $file . " HTTP/1.0\n\n")) {
return False;
}
$i = 0;
while ($line = $this->read_port()) {
if (feof($this->socket)) {
break;
}
$lines[] = $line;
$i++;
}
$this->close_port();
return $lines;
} else {
return False;
}
} else {
if ($this->open_port($server, 80, 15)) {
if (!$this->write_port("GET $file HTTP/1.0\nHost: $server\n\n")) {
return 0;
}
while ($line = $this->read_port()) {
$lines[] = $line;
}
$this->close_port();
return $lines;
} else {
return 0;
}
}
}
}