r6088: Add the socket_wrapper library. This is a very simple library that

redirects traffic (currently just IP traffic) over unix domain sockets
if the SOCKET_WRAPPER_DIR environment variable has been set.
Aim is to use this for the Samba4 torture suite on the buildfarm.

The socket_wrapper library can only be used if Samba was compiled with
--enable-developer.

test_rpc.sh passes against a local smbd with SOCKET_WRAPPER_DIR set.
(and ethereal showed no traffic whatsoever)

Stuff that still needs to be fixed in socketwrapper:
 - Give ENETUNREACH if target is not localhost
 - A given port number can only be used for UDP /or/ TCP, not both.
 - Perhaps allow some calls to circumvent socketwrapper (do we need DNS?)
(This used to be commit f8a63a843ccca092d9756b64e09175d37c08550a)

1 files changed, 48 insertions, 0 deletions

diff --git a/source4/lib/socket_wrapper.h b/source4/lib/socket_wrapper.h
new file mode 100644
index 0000000000..6da5a2980c
--- /dev/null
+++ b/source4/lib/socket_wrapper.h
@@ -0,0 +1,48 @@
+/* 
+   Copyright (C) Jelmer Vernooij 2005 <jelmer@samba.org>
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef __SOCKET_WRAPPER_H__
+#define __SOCKET_WRAPPER_H__
+
+int swrap_socket(int domain, int type, int protocol);
+int swrap_accept(int s, struct sockaddr *addr, socklen_t *addrlen);
+int swrap_connect(int s, const struct sockaddr *serv_addr, socklen_t addrlen);
+int swrap_bind(int s, const struct sockaddr *myaddr, socklen_t addrlen);
+int swrap_getpeername(int s, struct sockaddr *name, socklen_t *addrlen);
+int swrap_getsockname(int s, struct sockaddr *name, socklen_t *addrlen);
+int swrap_getsockopt(int s, int level, int optname, void *optval, socklen_t *optlen);
+int swrap_setsockopt(int s, int  level,  int  optname,  const  void  *optval, socklen_t optlen);
+ssize_t swrap_recvfrom(int s, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen);
+ssize_t swrap_sendto(int  s,  const  void *buf, size_t len, int flags, const struct sockaddr *to, socklen_t tolen);
+int swrap_close(int);
+
+#ifdef SOCKET_WRAPPER_REPLACE
+#define accept 				swrap_accept
+#define connect 			swrap_connect
+#define bind 				swrap_bind
+#define getpeername 		swrap_getpeername
+#define getsockname 		swrap_getsockname
+#define getsockopt 			swrap_getsockopt
+#define setsockopt 			swrap_setsockopt
+#define recvfrom 			swrap_recvfrom
+#define sendto 				swrap_sendto
+#define socket				swrap_socket
+#define close				swrap_close
+#endif
+
+#endif /* __SOCKET_WRAPPER_H__ */