Mercurial > dropbear
comparison cli-chansession.c @ 296:6b41e2cbf071 dbclient-netcat-alike
A hack to make dbclient to tcp forwarding netcat style.
eg
./dbclient -i testkey -L 1234:remotehost:remoteport tunnelhost
will ssh to tunnelhost (using testkey, there's no way to ask for a password)
and then tcpfwd to remotehost:remoteport on stdin/stdout.
There's no way to give a cmdline password, so -i for a keyfile will have to do.
Yet another reason for agent forwarding.
The 1234 is a dummy var, I think it has to be a valid portnumber though.
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Tue, 21 Mar 2006 16:16:41 +0000 |
| parents | 84925eceeb13 |
| children | d4f32c3443ac |
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| 295:03f65e461915 | 296:6b41e2cbf071 |
|---|---|
| 365 | 365 |
| 366 } | 366 } |
| 367 | 367 |
| 368 void cli_send_chansess_request() { | 368 void cli_send_chansess_request() { |
| 369 | 369 |
| 370 unsigned int port = 0; | |
| 371 unsigned char* addr = NULL; | |
| 372 unsigned char* ipstring = "127.0.0.1"; | |
| 373 unsigned char* portstring = "22"; | |
| 374 | |
| 375 /* hack hack */ | |
| 376 static const struct ChanType cli_chan_tcphack = { | |
| 377 0, /* sepfds */ | |
| 378 "direct-tcpip", | |
| 379 NULL, | |
| 380 NULL, | |
| 381 NULL, | |
| 382 cli_closechansess | |
| 383 }; | |
| 384 | |
| 370 TRACE(("enter cli_send_chansess_request")) | 385 TRACE(("enter cli_send_chansess_request")) |
| 371 if (send_msg_channel_open_init(STDIN_FILENO, &clichansess) | 386 if (send_msg_channel_open_init(STDIN_FILENO, &cli_chan_tcphack) |
| 372 == DROPBEAR_FAILURE) { | 387 == DROPBEAR_FAILURE) { |
| 373 dropbear_exit("Couldn't open initial channel"); | 388 dropbear_exit("Couldn't open initial channel"); |
| 374 } | 389 } |
| 375 | 390 |
| 376 /* No special channel request data */ | 391 if (cli_opts.localfwds == NULL) { |
| 392 dropbear_exit("You need to give a \"-L ignored:host:port\" option with this hacked up dbclient."); | |
| 393 } | |
| 394 | |
| 395 addr = cli_opts.localfwds->connectaddr; | |
| 396 port = cli_opts.localfwds->connectport; | |
| 397 | |
| 398 buf_putstring(ses.writepayload, addr, strlen(addr)); | |
| 399 buf_putint(ses.writepayload, port); | |
| 400 | |
| 401 /* originator ip */ | |
| 402 buf_putstring(ses.writepayload, ipstring, strlen(ipstring)); | |
| 403 /* originator port */ | |
| 404 buf_putint(ses.writepayload, atol(portstring)); | |
| 405 | |
| 377 encrypt_packet(); | 406 encrypt_packet(); |
| 378 TRACE(("leave cli_send_chansess_request")) | 407 TRACE(("leave cli_send_chansess_request")) |
| 379 | 408 |
| 380 } | 409 } |
| 410 | |
| 411 #if 0 | |
| 412 while (cli_opts.localfwds != NULL) { | |
| 413 ret = cli_localtcp(cli_opts.localfwds->listenport, | |
| 414 cli_opts.localfwds->connectaddr, | |
| 415 cli_opts.localfwds->connectport); | |
| 416 if (ret == DROPBEAR_FAILURE) { | |
| 417 dropbear_log(LOG_WARNING, "Failed local port forward %d:%s:%d", | |
| 418 cli_opts.localfwds->listenport, | |
| 419 cli_opts.localfwds->connectaddr, | |
| 420 cli_opts.localfwds->connectport); | |
| 421 #endif |