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#include "includes.h"
#include "session.h"
#include "dbutil.h"
#include "channel.h"
#include "tcp-connect.h"
#include "runopts.h"
#ifndef DISABLE_TCP_CONNECT
/* Called upon creating a new direct tcp channel (ie we connect out to an
* address */
int newtcpdirect(struct Channel * channel) {
unsigned char* desthost = NULL;
unsigned int destport;
unsigned char* orighost = NULL;
unsigned int origport;
char portstring[NI_MAXSERV];
int sock;
int len;
int ret = DROPBEAR_FAILURE;
if (opts.nolocaltcp) {
TRACE(("leave newtcpdirect: local tcp forwarding disabled"));
goto out;
}
desthost = buf_getstring(ses.payload, &len);
if (len > MAX_HOST_LEN) {
TRACE(("leave newtcpdirect: desthost too long"));
goto out;
}
destport = buf_getint(ses.payload);
orighost = buf_getstring(ses.payload, &len);
if (len > MAX_HOST_LEN) {
TRACE(("leave newtcpdirect: orighost too long"));
goto out;
}
origport = buf_getint(ses.payload);
/* best be sure */
if (origport > 65535 || destport > 65535) {
TRACE(("leave newtcpdirect: port > 65535"));
goto out;
}
snprintf(portstring, sizeof(portstring), "%d", destport);
sock = connect_remote(desthost, portstring, 1, NULL);
if (sock < 0) {
TRACE(("leave newtcpdirect: sock failed"));
goto out;
}
ses.maxfd = MAX(ses.maxfd, sock);
/* Note that infd is actually the "outgoing" direction on the
* tcp connection, vice versa for outfd.
* We don't set outfd, that will get set after the connection's
* progress succeeds */
channel->infd = sock;
channel->initconn = 1;
ret = DROPBEAR_SUCCESS;
out:
m_free(desthost);
m_free(orighost);
TRACE(("leave newtcpdirect: ret %d", ret));
return ret;
}
#endif /* DISABLE_TCPFWD_DIRECT */
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