[tor-commits] [torsocks/master] Fix: accept{4} wrappers to accept addr to NULL

[dgoulet at torproject.org]

commit 67d9b1a4620445bfb271d64a7799ef22487fabfa
Author: David Goulet <dgoulet at ev0ke.net>
Date:   Tue Jun 14 10:40:18 2016 -0400

    Fix: accept{4} wrappers to accept addr to NULL
    
    The accept(2) man page specifies that addr can be a NULL pointer for both
    accept() and accept4().
    
    This has been reported in
    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=811266
    
    Signed-off-by: David Goulet <dgoulet at ev0ke.net>
---
 src/lib/accept.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/src/lib/accept.c b/src/lib/accept.c
index 21714cb..80434fc 100644
--- a/src/lib/accept.c
+++ b/src/lib/accept.c
@@ -37,11 +37,6 @@ LIBC_ACCEPT_RET_TYPE tsocks_accept(LIBC_ACCEPT_SIG)
 		goto libc_call;
 	}
 
-	if (!addr) {
-		errno = EFAULT;
-		goto error;
-	}
-
 	sa_len = sizeof(sa);
 
 	ret = getsockname(sockfd, &sa, &sa_len);
@@ -61,11 +56,10 @@ LIBC_ACCEPT_RET_TYPE tsocks_accept(LIBC_ACCEPT_SIG)
 	/* Inbound localhost connections are allowed. */
 	ret = utils_sockaddr_is_localhost(&sa);
 	if (!ret) {
-
 		/*
 		 * Accept is completely denied here since this means that the
-		 * application can accept inbound connections on non localhost that are
-		 * obviously NOT handled by the Tor network thus reject this call.
+		 * application can accept inbound connections on non localhost that
+		 * are obviously NOT handled by the Tor network thus reject this call.
 		 */
 		DBG("[accept] Non localhost inbound connection are not allowed.");
 		errno = EPERM;
@@ -111,11 +105,6 @@ LIBC_ACCEPT4_RET_TYPE tsocks_accept4(LIBC_ACCEPT4_SIG)
 		goto libc_call;
 	}
 
-	if (!addr) {
-		errno = EFAULT;
-		goto error;
-	}
-
 	sa_len = sizeof(sa);
 
 	ret = getsockname(sockfd, &sa, &sa_len);