<?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
*/
/**
* Socket Based FTP implementation
*
* @package PemFTP
* @subpackage Socket
* @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_sockets extends ftp_base {
function __construct($verb=FALSE, $le=FALSE) {
parent::__construct(true, $verb, $le);
}
// <!-- --------------------------------------------------------------------------------------- -->
// <!-- Private functions -->
// <!-- --------------------------------------------------------------------------------------- -->
function _settimeout($sock) {
if(!@socket_set_option($sock, SOL_SOCKET, SO_RCVTIMEO, array("sec"=>$this->_timeout, "usec"=>0))) {
$this->PushError('_connect','socket set receive timeout',socket_strerror(socket_last_error($sock)));
@socket_close($sock);
return FALSE;
}
if(!@socket_set_option($sock, SOL_SOCKET , SO_SNDTIMEO, array("sec"=>$this->_timeout, "usec"=>0))) {
$this->PushError('_connect','socket set send timeout',socket_strerror(socket_last_error($sock)));
@socket_close($sock);
return FALSE;
}
return true;
}
function _connect($host, $port) {
$this->SendMSG("Creating socket");
if(!($sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) {
$this->PushError('_connect','socket create failed',socket_strerror(socket_last_error($sock)));
return FALSE;
}
if(!$this->_settimeout($sock)) return FALSE;
$this->SendMSG("Connecting to \"".$host.":".$port."\"");
if (!($res = @socket_connect($sock, $host, $port))) {
$this->PushError('_connect','socket connect failed',socket_strerror(socket_last_error($sock)));
@socket_close($sock);
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 {
$tmp=@socket_read($this->_ftp_control_sock, 4096, PHP_BINARY_READ);
if($tmp===false) {
$go=$result=false;
$this->PushError($fnction,'Read failed', socket_strerror(socket_last_error($this->_ftp_control_sock)));
} else {
$this->_message.=$tmp;
$go = !preg_match("/^([0-9]{3})(-.+\\1)? [^".CRLF."]+".CRLF."$/Us", $this->_message, $regs);
}
} while($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;
$status=@socket_write($this->_ftp_control_sock, $cmd.CRLF);
if($status===false) {
$this->PushError($fnction,'socket write failed', socket_strerror(socket_last_error($this->stream)));
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;
$this->SendMSG("Creating data socket");
$this->_ftp_data_sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($this->_ftp_data_sock < 0) {
$this->PushError('_data_prepare','socket create failed',socket_strerror(socket_last_error($this->_ftp_data_sock)));
return FALSE;
}
if(!$this->_settimeout($this->_ftp_data_sock)) {
$this->_data_close();
return FALSE;
}
if($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.":".$this->_dataport);
if(!@socket_connect($this->_ftp_data_sock, $this->_datahost, $this->_dataport)) {
$this->PushError("_data_prepare","socket_connect", socket_strerror(socket_last_error($this->_ftp_data_sock)));
$this->_data_close();
return FALSE;
}
else $this->_ftp_temp_sock=$this->_ftp_data_sock;
} else {
if(!@socket_getsockname($this->_ftp_control_sock, $addr, $port)) {
$this->PushError("_data_prepare","cannot get control socket information", socket_strerror(socket_last_error($this->_ftp_control_sock)));
$this->_data_close();
return FALSE;
}
if(!@socket_bind($this->_ftp_data_sock,$addr)){
$this->PushError("_data_prepare","cannot bind data socket", socket_strerror(socket_last_error($this->_ftp_data_sock)));
$this->_data_close();
return FALSE;
}
if(!@socket_listen($this->_ftp_data_sock)) {
$this->PushError("_data_prepare","cannot listen data socket", socket_strerror(socket_last_error($this->_ftp_data_sock)));
$this->_data_close();
return FALSE;
}
if(!@socket_getsockname($this->_ftp_data_sock, $this->_datahost, $this->_dataport)) {
$this->PushError("_data_prepare","cannot get data socket information", socket_strerror(socket_last_error($this->_ftp_data_sock)));
$this->_data_close();
return FALSE;
}
if(!$this->_exec('PORT '.str_replace('.',',',$this->_datahost.'.'.($this->_dataport>>8).'.'.($this->_dataport&0x00FF)), "_port")) {
$this->_data_close();
return FALSE;
}
if(!$this->_checkCode()) {
$this->_data_close();
return FALSE;
}
}
return TRUE;
}
function _data_read($mode=FTP_ASCII, $fp=NULL) {
$NewLine=$this->_eol_code[$this->OS_local];
if(is_resource($fp)) $out=0;
else $out="";
if(!$this->_passive) {
$this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
$this->_ftp_temp_sock=socket_accept($this->_ftp_data_sock);
if($this->_ftp_temp_sock===FALSE) {
$this->PushError("_data_read","socket_accept", socket_strerror(socket_last_error($this->_ftp_temp_sock)));
$this->_data_close();
return FALSE;
}
}
while(($block=@socket_read($this->_ftp_temp_sock, $this->_ftp_buff_size, PHP_BINARY_READ))!==false) {
if($block==="") break;
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) {
$NewLine=$this->_eol_code[$this->OS_local];
if(is_resource($fp)) $out=0;
else $out="";
if(!$this->_passive) {
$this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
$this->_ftp_temp_sock=socket_accept($this->_ftp_data_sock);
if($this->_ftp_temp_sock===FALSE) {
$this->PushError("_data_write","socket_accept", socket_strerror(socket_last_error($this->_ftp_temp_sock)));
$this->_data_close();
return false;
}
}
if(is_resource($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=@socket_write($this->_ftp_temp_sock, $block))===FALSE) {
$this->PushError("_data_write","socket_write", socket_strerror(socket_last_error($this->_ftp_temp_sock)));
$this->_data_close();
return FALSE;
}
$block=substr($block, $t);
} while(!empty($block));
return true;
}
function _data_close() {
@socket_close($this->_ftp_temp_sock);
@socket_close($this->_ftp_data_sock);
$this->SendMSG("Disconnected data from remote host");
return TRUE;
}
function _quit() {
if($this->_connected) {
@socket_close($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.