Need URGENT help wit FTP Programming

[cpbee]

Hello,

I need help for some FTP programming. I tried some other places, but nobody could help me. So my prob is: I want to code some FTP Client, that automatically downoads some stuff from a site. The whole thing should be or is started in WinAPÎ... with raw Sockets. I mangaged to get a connection to the FTP server, also the login and password submission works fine. The problem starts with some more advanced commands. Like List and / or Retrieve. I know the commands (got them from the RFC 959) but somehow I don't get them working. If I call for the "LIST" command, it arrives at the server, but I don't get any answer.
What do I wrong? Could anybody help me with that specific problem? Does anybody know a source of FTP Client that uses Raw Sockets?

I would be very thankful if anybody could help me!!!

chris.

(Here is some code I use.. "send" sends the message and I capture the server answer with "retrv&quot.

bool TheFTP::entrPassv()
{
int pos;
//Set Current Working directory
sprintf(message,"CWD\r\n"
send(s,message,strlen(message),0);
getServerAnswer();

//Print Current Working directory
sprintf(message,"pwd\r\n"
send(s,message,strlen(message),0);
getServerAnswer();

//Set to Binary Mode
sprintf(message,"TYPE A\r\n"
send(s,message,strlen(message),0);
getServerAnswer();

//get Passive Mode IP and Port
sprintf(message,"PASV \r\n"
send(s,message,strlen(message),0);
getServerAnswer();

//get Passive Mode stuff
pos=strcspn(bf,"("
sprintf(passivePort,&bf[pos+1]);
pos=strlen(passivePort);
passivePort[pos-3]='\0';
/*
//set Passive Mode Port
sprintf(message,"PORT *********\r\n"
//strcat(message,passivePort);
//strcat(message,"\r\n"
send(s,message,strlen(message),0);
getServerAnswer();

*/
getDirList();

return true;
}

bool TheFTP::getDirList()
{

sprintf(message,"LIST\r\n"
send(s,message,strlen(message),0);

getServerAnswer();


return true;

}

 

[hnd]

Is there an Error code sent Back from the server?

Consider FTP uses 2 Channels 21 for Commands and 20 for Data.
hnd
hasso55@yahoo.com

 

[cpbee]

and how do I exactly manage that? I would appreciate your help!

Thx chris.

 

[hnd]

Each command is confirmed by an response code sent back by the FTP-Server.
For Example 200 means Command Ok.
In the first step you should check this code to find out the reason why this command is not working.

The other thing: To implement a FTP-Client look to the WinInet-API there are a lot of encapsulated Functions you could use (if you are using Windows)

What i would do: Take an ftp-client that support Command line parameters and launch it from a regular program.

In an Unix-Environment you could start it from Cron and that would need no line of writing Code.
hnd
hasso55@yahoo.com

 

[hnd]

What i forgot: in a Windows environment, you can start a FTP-Client from a Task - scheduler too.
hnd
hasso55@yahoo.com