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d42eed4a | 1 | /* Check for use-after-free in clntudp_call (bug 21115). |
688903eb | 2 | Copyright (C) 2017-2018 Free Software Foundation, Inc. |
d42eed4a FW |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <netinet/in.h> | |
20 | #include <rpc/clnt.h> | |
21 | #include <rpc/svc.h> | |
22 | #include <support/check.h> | |
23 | #include <support/namespace.h> | |
24 | #include <support/xsocket.h> | |
25 | #include <unistd.h> | |
26 | ||
27 | static int | |
28 | do_test (void) | |
29 | { | |
30 | support_become_root (); | |
31 | support_enter_network_namespace (); | |
32 | ||
33 | /* Obtain a likely-unused port number. */ | |
34 | struct sockaddr_in sin = | |
35 | { | |
36 | .sin_family = AF_INET, | |
37 | .sin_addr.s_addr = htonl (INADDR_LOOPBACK), | |
38 | }; | |
39 | { | |
40 | int fd = xsocket (AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0); | |
41 | xbind (fd, (struct sockaddr *) &sin, sizeof (sin)); | |
42 | socklen_t sinlen = sizeof (sin); | |
43 | xgetsockname (fd, (struct sockaddr *) &sin, &sinlen); | |
44 | /* Close the socket, so that we will receive an error below. */ | |
45 | close (fd); | |
46 | } | |
47 | ||
48 | int sock = RPC_ANYSOCK; | |
49 | CLIENT *clnt = clntudp_create | |
50 | (&sin, 1, 2, (struct timeval) { 1, 0 }, &sock); | |
51 | TEST_VERIFY_EXIT (clnt != NULL); | |
52 | TEST_VERIFY (clnt_call (clnt, 3, | |
53 | (xdrproc_t) xdr_void, NULL, | |
54 | (xdrproc_t) xdr_void, NULL, | |
55 | ((struct timeval) { 3, 0 })) | |
56 | == RPC_CANTRECV); | |
57 | clnt_destroy (clnt); | |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
62 | #include <support/test-driver.c> |