diff options
| author | Angelos D. Keromytis <angelos@cvs.openbsd.org> | 1998-02-28 03:39:59 +0000 |
|---|---|---|
| committer | Angelos D. Keromytis <angelos@cvs.openbsd.org> | 1998-02-28 03:39:59 +0000 |
| commit | 262293116abe08f018916660cb8435e3f56fe679 (patch) | |
| tree | a5ad7729b9ef11144e5eaf6ea661ce4e8912ac81 /sys/netinet/tcp_usrreq.c | |
| parent | 48d3dba576d9a3c4f87e56e191bd848b13edb13d (diff) | |
Another shot at disallowing TCP connections to 255.255.255.255,
0.0.0.0 and any local broadcast addresses. Tested.
Diffstat (limited to 'sys/netinet/tcp_usrreq.c')
| -rw-r--r-- | sys/netinet/tcp_usrreq.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c index 6956fc9c7a7..2b89813c071 100644 --- a/sys/netinet/tcp_usrreq.c +++ b/sys/netinet/tcp_usrreq.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tcp_usrreq.c,v 1.19 1998/02/25 23:44:58 deraadt Exp $ */ +/* $OpenBSD: tcp_usrreq.c,v 1.20 1998/02/28 03:39:58 angelos Exp $ */ /* $NetBSD: tcp_usrreq.c,v 1.20 1996/02/13 23:44:16 christos Exp $ */ /* @@ -90,6 +90,7 @@ tcp_usrreq(so, req, m, nam, control) int req; struct mbuf *m, *nam, *control; { + struct sockaddr_in *sin; register struct inpcb *inp; register struct tcpcb *tp = NULL; int s; @@ -189,6 +190,15 @@ tcp_usrreq(so, req, m, nam, control) * Send initial segment on connection. */ case PRU_CONNECT: + sin = mtod(nam, struct sockaddr_in *); + + /* Trying to connect to some broadcast address */ + if (in_broadcast(sin->sin_addr, NULL)) + { + error = EINVAL; + break; + } + if (inp->inp_lport == 0) { error = in_pcbbind(inp, NULL); if (error) @@ -197,6 +207,7 @@ tcp_usrreq(so, req, m, nam, control) error = in_pcbconnect(inp, nam); if (error) break; + tp->t_template = tcp_template(tp); if (tp->t_template == 0) { in_pcbdisconnect(inp); |