Re: Need help.

[Aris Adamantiadis <aris@xxxxxxxxxxxx>]

Hello Taras,

I am sorry the documentation let you think it would be so easy... In 
fact channel_open_forward only does half the work, this is connecting 
to a remote host:port from the ssh server and stream it into a channel. 
However the port binding and the select loop (to verify if data is 
arriving and dispatching it) is unfortunately up to you.

Looking at the select_loop in sample.c would be a good start-up for 
you, even if we should consider writing a working example in the 
examples directory. The functionnality you expected may be available in 
the 0.5 release.

Andreas, Maybe we should make clear into the documentation about what I 
just stated above. I also only see online documentation for the 0.4.0 
branch when the stable branch is still 0.3.x. Could you have a look ?
Regards,

Aris

Taras Halturin a écrit :
> Hi all!
>
> i'm trying to use libssh for the port forwarding and it doesnt work for 
> me :(. I need to forward remote port to the local host like this:
> ssh -L 22222:localhost:8222 fantom@xxxxxxxxxxxxx
>
> here is the code:
>
>     static gboolean
>     do_open_channel (gchar *username, gchar *password, gchar *remote,
>                      guint remote_port, guint local_port)
>     {
>      SSH_SESSION *ssh = ssh_new();
>      SSH_OPTIONS *opts = ssh_options_new();
>      CHANNEL *ch = NULL;
>
>      ssh_options_set_port (opts, 22);
>      ssh_options_set_host (opts, remote);
>     ssh_set_options (ssh, opts);
>
>     if (ssh_connect(ssh) != SSH_OK)
>     {
>     g_warning ("Error at connection :%s\n",ssh_get_error (ssh));
>     return FALSE;
>     }
>
>     ssh_is_server_known(ssh);
>
>     if (ssh_userauth_autopubkey(ssh) != SSH_AUTH_SUCCESS)
>     {
>     g_warning ("Authenticating with pubkey: %s\n",ssh_get_error(ssh));
>     if (ssh_userauth_password (ssh, username, password) != SSH_AUTH_SUCCESS)
>     {
>     g_warning ("Authentication with password failed: %s\n",ssh_get_error
>     (ssh));
>     return FALSE;
>     }
>     }
>
>     ch = channel_new (ssh);
>
>     if (channel_open_forward (ch, remote, remote_port, "127.0.0.1",
>     local_port) != SSH_OK)
>     {
>     g_warning ("Error when opening forward:%s\n", ssh_get_error (ssh));
>     return FALSE;
>     }
>
>     g_debug ("Chanel is forwarded");
>
>     return TRUE;
>     //channel_close(channel);
>     //channel_free(channel);
>     //ssh_disconnect(ssh);
>     }
>
>
> i'm calling this func with args:
>
> do_open_channel ("fantom","megapass", "myremote.host", 8222, 22222);
>
> No errors happend, "Chanel is forwarded" has printed, but i can't see 
> the listener on the 22222 port. What is wrong? Could somebody help me?
>
> WBR
>
> Taras Halturin.