<?php
/**
* PemFTP - An Ftp implementation in pure PHP
*
* @package PemFTP
* @since 2.5.0
*
* @version 1.0
* @copyright Alexey Dotsenko
* @author Alexey Dotsenko
* @link https://www.phpclasses.org/package/1743-PHP-FTP-client-in-pure-PHP.html
* @license LGPL https://opensource.org/licenses/lgpl-license.html
*/
/**
* FTP implementation using fsockopen to connect.
*
* @package PemFTP
* @subpackage Pure
* @since 2.5.0
*
* @version 1.0
* @copyright Alexey Dotsenko
* @author Alexey Dotsenko
* @link https://www.phpclasses.org/package/1743-PHP-FTP-client-in-pure-PHP.html
* @license LGPL https://opensource.org/licenses/lgpl-license.html
*/
class ftp_pure extends ftp_base {
function __construct($verb=FALSE, $le=FALSE) {
parent::__construct(false, $verb, $le);
}
// <!-- --------------------------------------------------------------------------------------- -->
// <!-- Private functions -->
// <!-- --------------------------------------------------------------------------------------- -->
function _settimeout($sock) {
if(!@stream_set_timeout($sock, $this->_timeout)) {
$this->PushError('_settimeout','socket set send timeout');
$this->_quit();
return FALSE;
}
return TRUE;
}
function _connect($host, $port) {
$this->SendMSG("Creating socket");
$sock = @fsockopen($host, $port, $errno, $errstr, $this->_timeout);
if (!$sock) {
$this->PushError('_connect','socket connect failed', $errstr." (".$errno.")");
return FALSE;
}
$this->_connected=true;
return $sock;
}
function _readmsg($fnction="_readmsg"){
if(!$this->_connected) {
$this->PushError($fnction, 'Connect first');
return FALSE;
}
$result=true;
$this->_message="";
$this->_code=0;
$go=true;
do {
$tmp=@fgets($this->_ftp_control_sock, 512);
if($tmp===false) {
$go=$result=false;
$this->PushError($fnction,'Read failed');
} else {
$this->_message.=$tmp;
if(preg_match("/^([0-9]{3})(-(.*[".CRLF."]{1,2})+\\1)? [^".CRLF."]+[".CRLF."]{1,2}$/", $this->_message, $regs)) $go=false;
}
} while($go);
if($this->LocalEcho) echo "GET < ".rtrim($this->_message, CRLF).CRLF;
$this->_code=(int)$regs[1];
return $result;
}
function _exec($cmd, $fnction="_exec") {
if(!$this->_ready) {
$this->PushError($fnction,'Connect first');
return FALSE;
}
if($this->LocalEcho) echo "PUT > ",$cmd,CRLF;
$status=@fputs($this->_ftp_control_sock, $cmd.CRLF);
if($status===false) {
$this->PushError($fnction,'socket write failed');
return FALSE;
}
$this->_lastaction=time();
if(!$this->_readmsg($fnction)) return FALSE;
return TRUE;
}
function _data_prepare($mode=FTP_ASCII) {
if(!$this->_settype($mode)) return FALSE;
if($this->_passive) {
if(!$this->_exec("PASV", "pasv")) {
$this->_data_close();
return FALSE;
}
if(!$this->_checkCode()) {
$this->_data_close();
return FALSE;
}
$ip_port = explode(",", preg_replace("/^.+ \\(?([0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+)\\)?.*$/s", "\\1", $this->_message));
$this->_datahost=$ip_port[0].".".$ip_port[1].".".$ip_port[2].".".$ip_port[3];
$this->_dataport=(((int)$ip_port[4])<<8) + ((int)$ip_port[5]);
$this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
$this->_ftp_data_sock=@fsockopen($this->_datahost, $this->_dataport, $errno, $errstr, $this->_timeout);
if(!$this->_ftp_data_sock) {
$this->PushError("_data_prepare","fsockopen fails", $errstr." (".$errno.")");
$this->_data_close();
return FALSE;
}
else $this->_ftp_data_sock;
} else {
$this->SendMSG("Only passive connections available!");
return FALSE;
}
return TRUE;
}
function _data_read($mode=FTP_ASCII, $fp=NULL) {
if(is_resource($fp)) $out=0;
else $out="";
if(!$this->_passive) {
$this->SendMSG("Only passive connections available!");
return FALSE;
}
while (!feof($this->_ftp_data_sock)) {
$block=fread($this->_ftp_data_sock, $this->_ftp_buff_size);
if($mode!=FTP_BINARY) $block=preg_replace("/\r\n|\r|\n/", $this->_eol_code[$this->OS_local], $block);
if(is_resource($fp)) $out+=fwrite($fp, $block, strlen($block));
else $out.=$block;
}
return $out;
}
function _data_write($mode=FTP_ASCII, $fp=NULL) {
if(is_resource($fp)) $out=0;
else $out="";
if(!$this->_passive) {
$this->SendMSG("Only passive connections available!");
return FALSE;
}
if(is_resource($fp)) {
while(!feof($fp)) {
$block=fread($fp, $this->_ftp_buff_size);
if(!$this->_data_write_block($mode, $block)) return false;
}
} elseif(!$this->_data_write_block($mode, $fp)) return false;
return TRUE;
}
function _data_write_block($mode, $block) {
if($mode!=FTP_BINARY) $block=preg_replace("/\r\n|\r|\n/", $this->_eol_code[$this->OS_remote], $block);
do {
if(($t=@fwrite($this->_ftp_data_sock, $block))===FALSE) {
$this->PushError("_data_write","Can't write to socket");
return FALSE;
}
$block=substr($block, $t);
} while(!empty($block));
return true;
}
function _data_close() {
@fclose($this->_ftp_data_sock);
$this->SendMSG("Disconnected data from remote host");
return TRUE;
}
function _quit($force=FALSE) {
if($this->_connected or $force) {
@fclose($this->_ftp_control_sock);
$this->_connected=false;
$this->SendMSG("Socket closed");
}
}
}
?>
ما بقاش الذكاء الاصطناعي مجرد خيال علمي أو تطور مستنيينه في المستقبل… لأ، ده بقى واقع عايشينه كل يوم، وبيأثر بشكل مباشر على شغلنا، ومهاراتنا، وحتى على الوظايف نفسها. في الفيديو ده، هنتكلم عن إزاي الذكاء الاصطناعي قلب موازين سوق العمل، إيه المهن اللي بدأت تختفي، وإيه اللي طلع جديد، وإزاي نجهز نفسنا للمستقبل اللي بدأ خلاص.