Mercurial > dropbear
diff tcp-connect.c @ 62:20563735e8b5
just checkpointing
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Tue, 10 Aug 2004 17:09:52 +0000 |
parents | |
children | dcc43965928f |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tcp-connect.c Tue Aug 10 17:09:52 2004 +0000 @@ -0,0 +1,75 @@ +#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[6]; + 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 */