[tor-commits] [torsocks/master] Fix: reject IPv6 socket creation

[dgoulet at torproject.org]

commit dbed09b483170b76c531e219792060ecf0e96ca6
Author: David Goulet <dgoulet at ev0ke.net>
Date:   Thu Nov 7 20:16:51 2013 -0500

    Fix: reject IPv6 socket creation
    
    Since Tor does not yet handle IPv6 DNS resolution or traffic, simply
    reject any socket creation with AF_INET6 type.
    
    Signed-off-by: David Goulet <dgoulet at ev0ke.net>
---
 src/lib/socket.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/lib/socket.c b/src/lib/socket.c
index 8a4c0d1..dcc0444 100644
--- a/src/lib/socket.c
+++ b/src/lib/socket.c
@@ -34,6 +34,12 @@ LIBC_SOCKET_RET_TYPE tsocks_socket(LIBC_SOCKET_SIG)
 
 	switch (__type) {
 	case SOCK_STREAM:
+		if (__domain == AF_INET6) {
+			/* Tor does not handle IPv6 at the moment. Reject it. */
+			ERR("Socket is IPv6. Tor does not handle AF_INET6 connection.");
+			errno = EINVAL;
+			return -1;
+		}
 		break;
 	default:
 		if (__domain == AF_INET || __domain == AF_INET6) {