question about php and socket and ftp

[Anon]

How to write a ftp client use socket of php?

I even try it,but I met a trouble for it,this is my code:

<?php
$fp = fsockopen("wg", 21, &$errno, &$errstr, 10);
if(!$fp) {
echo "$errstr ($errno)<br>\n";
} else {

    echo fgets($fp,256);
    echo "<br>";

   fputs($fp,"USER wg1\r\n");
    echo fgets($fp,256);
    echo "<br>";

    $ret=fputs($fp,"PASS \r\n");
    echo fgets($fp,256);
    echo "<br>";

    $ret=fputs($fp,"TYPE I\r\n");
    echo fgets($fp,256);
    echo "<br>";

    $ret=fputs($fp,"REST 100\r\n");
    echo fgets($fp,256);
    echo "<br>";

    $ret=fputs($fp,"REST 0\r\n");
    echo fgets($fp,256);
    echo "<br>";

    $ret=fputs($fp,"pwd\r\n");
    echo fgets($fp,256);
    echo "<br>";

    $ret=fputs($fp,"TYPE A\r\n");
    echo fgets($fp,256);
    echo "<br>";

    $ret=fputs($fp,"PASV\r\n");
    echo fgets($fp,256);
    echo "<br>";

    $ret=fputs($fp,"LIST\r\n");
    echo fgets($fp,256);
    echo "<br>";

    echo fgets($fp,256);
    echo "<br>";

    $ret=fclose($fp);

}
?>

the result is:

220 wg Microsoft FTP Service (Version 5.0).
331 Password required for wg1.
230-Hello,This is Wg's FTP Server
230 User wg1 logged in.
200 Type set to I.
350 Restarting at 100.
350 Restarting at 0.
257 "/" is current directory.
200 Type set to A.
227 Entering Passive Mode (61,137,154,75,14,176).
425 Can't open data connection.

and my question:
I send command in order:USER PASS TYPE REST PWD,all is OK,then I send command:LIST,the error is appear,what'error in my code?When I use CuteFtp to test my FTP server,It's OK¡£I have thinked it 3 days,but I didn't find the solution.Do you give me a tip?
thanks and Merry Christmas!

[Anon]

I can give you a tip: use PHP's builtin FTP functions. :-)

[Anon]

I have use it,but the function:ftp_put¡¢ftp_get only can upload or download one file per time,and it can't support resume,so I use socket to make a ftp client for resume.
How do you think about resume of upload and download in PHP?

[Anon]

Why are you entering pasv mode? I thought this was only useful for sending data streams back and forth between two remote server!! And if I am right, I don't see any need in using passive mode. Try taking it out and then ls'ing(not LIST'ing).

when I tried to run your commands from ftp non-interactive session I got the following:

ftp> quote pasv
227 Entering Passive Mode (xxx,xxx,xxx,xxx,xxx,120)
ftp> quote list
Connection closed by remote host.
ftp>

AND if I didn't go into pasv mode but tried to run the LIST command I got:

ftp> quote LIST
425 Can't build data connection: Connection refused.
ftp>

Now, if I simply did this connection the way I would in any regular ftp session things worked fine:

ftp> ls
200 PORT command successful.
150 Opening ASCII mode data connection for 'file list'.
.cshrc
.login
.login_conf
...

So, I would take the pasv out of there. And I would only use QUOTE when absolutely needed.

[Anon]

Jim:
Thanks.

Maybe that's my mistake that use pasv,and I used "ls" in FTP command line,it worked well certainly,but it can't work in socket in php,I have work in interactive so I must in this session.that 's my problem,and the order of command is simulate to the order of CuteFtp,that is cuteFTP 's work log:

STATUS:> Connecting to wg
STATUS:> Connecting to wg (ip = 127.0.0.1)
STATUS:> Socket connected. Waiting for welcome message...
220 wg Microsoft FTP Service (Version 5.0).
STATUS:> Connected. Authenticating...
COMMAND:> USER anonymous
331 Anonymous access allowed, send identity (e-mail name) as password.
COMMAND:> PASS ********
230-Hello,This is Wg's FTP Server
230 Anonymous user logged in.
STATUS:> Login successful
COMMAND:> TYPE I
200 Type set to I.
COMMAND:> REST 100
350 Restarting at 100.
STATUS:> This site can resume broken downloads
COMMAND:> REST 0
350 Restarting at 0.
COMMAND:> pwd
257 "/" is current directory.
COMMAND:> TYPE A
200 Type set to A.
STATUS:> Retrieving directory listing...
COMMAND:> PORT 127,0,0,1,12,67
200 PORT command successful.
COMMAND:> LIST
150 Opening ASCII mode data connection for /bin/ls.
226 Transfer complete.
STATUS:> Received 201 bytes Ok.
STATUS:> Time: 0:00:01, Efficiency: 0.20 KBytes/s (201 bytes/s)

STATUS:> Done.

It's command order is :USER anonymous ¡¢PASS ********¡¢TYPE I¡¢REST 100¡¢REST 0¡¢ pwd¡¢TYPE A¡¢PORT 127,0,0,1,12,67¡¢£¨LIST£¡£¡£¡£©£¬My command is the same to it and the result is right except "LIST",WHY? Dont't The cuteFtp work under interactive session?Which is my error code?

Jim wrote:

Why are you entering pasv mode? I thought this was only useful for sending data streams back and forth between two remote server!! And if I am right, I don't see any need in using passive mode. Try taking it out and then ls'ing(not LIST'ing).

when I tried to run your commands from ftp non-interactive session I got the following:

ftp> quote pasv
227 Entering Passive Mode (xxx,xxx,xxx,xxx,xxx,120)
ftp> quote list
Connection closed by remote host.
ftp>

AND if I didn't go into pasv mode but tried to run the LIST command I got:

ftp> quote LIST
425 Can't build data connection: Connection refused.
ftp>

Now, if I simply did this connection the way I would in any regular ftp session things worked fine:

ftp> ls
200 PORT command successful.
150 Opening ASCII mode data connection for 'file list'.
.cshrc
.login
.login_conf
...

So, I would take the pasv out of there. And I would only use QUOTE when absolutely needed.