Mercurial > hg > octave-kai > gnulib-hg
changeset 16148:3225b19f3d2d
Add a test suite for the sethostname module.
Provide a module that tests the functionality of sethostname().
* modules/sethostname-tests: New file. A test program
for the sethostname module.
* tests/test-sethostname.c: Likewise.
Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
author | Ben Walton <bwalton@artsci.utoronto.ca> |
---|---|
date | Fri, 02 Dec 2011 23:04:19 -0500 |
parents | 9b09933df0d5 |
children | 4e3101cbdf81 |
files | ChangeLog modules/sethostname-tests tests/test-sethostname.c |
diffstat | 3 files changed, 137 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2011-12-01 Ben Walton <bwalton@artsci.utoronto.ca> + + Add a test suite for the sethostname module. + * modules/sethostname-tests: New file. A test program + for the sethostname module. + * tests/test-sethostname.c: Likewise. + 2011-12-03 Bruno Haible <bruno@clisp.org> Tweak last commit.
new file mode 100644 --- /dev/null +++ b/modules/sethostname-tests @@ -0,0 +1,13 @@ +Files: +tests/signature.h +tests/test-sethostname.c +tests/macros.h + +Depends-on: +sys_types + +configure.ac: + +Makefile.am: +TESTS += test-sethostname +check_PROGRAMS += test-sethostname
new file mode 100644 --- /dev/null +++ b/tests/test-sethostname.c @@ -0,0 +1,117 @@ +/* + * Copyright (C) 2011 Free Software Foundation, Inc. + * Written by Ben Walton. + * + * 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 3 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, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +#include <unistd.h> + +#include "signature.h" +SIGNATURE_CHECK (sethostname, int, (const char *, size_t)); + +/* for HOST_NAME_MAX */ +#include <limits.h> +/* for uid_t */ +#include <sys/types.h> +/* for strlen */ +#include <string.h> + +#include <errno.h> +#include <stdio.h> + +#include "macros.h" + +#define TESTHOSTNAME "gnulib-hostname" + +/* mingw and MSVC 9 lack geteuid, so setup a value that will indicate + we don't have root privilege since we wouldn't know whether to + expect success or failure when setting a name anyway*/ +#if !HAVE_GETEUID +# define geteuid() ((uid_t) -1) +#endif + +int +main (int argc, char *argv[] _GL_UNUSED) +{ + char origname[HOST_NAME_MAX]; + char newname[HOST_NAME_MAX]; + char longname[HOST_NAME_MAX + 2]; + int rcg, rcs, i; + + /* skip the tests if we don't have root privilege. this does not + consider things like CAP_SYS_ADMIN (linux) or PRIV_SYS_ADMIN + (solaris), etc. systems without a working geteuid (mingw, MSVC + 9) will always skip this test. */ + if (geteuid() != 0) + return 0; + + /* we want to ensure we can do a get/set/get check to ensure the + change is accepted. record the current name so it can be restored + later */ + ASSERT(gethostname (origname, sizeof (origname)) == 0); + + /* try setting a valid hostname. if it fails -1/ENOSYS, we will + skip the test for long names as this is an indication we're using + the stub function that doesn't do anything on this platform. */ + rcs = sethostname (TESTHOSTNAME, strlen (TESTHOSTNAME)); + + if (rcs != 0) + { + if (rcs == -1 && errno == ENOSYS) + return 0; + else + { + printf ("error setting valid hostname.\n"); + return 1; + } + } + else + { + ASSERT (gethostname (newname, sizeof (newname)) == 0); + + /* if we don't get back what we put in, there is no need to + restore the original name as we will assume it was not + properly changed. */ + if (strcmp (newname, TESTHOSTNAME) != 0) + { + printf ("set/get comparison failed.\n"); + return 1; + } + } + + /* glibc does allow setting a zero length name, so the lower bound + needs no test. validate that we are constrained by + HOST_NAME_MAX */ + for (i = 0; i < (HOST_NAME_MAX + 1); i++) + longname[i] = 'a'; + + longname[i] = '\0'; + + rcs = sethostname ((const char *) longname, (HOST_NAME_MAX + 1)); + + if (rcs != -1) + { + /* attempt to restore the original name. */ + sethostname (origname, strlen (origname)); + printf ("expected failure when setting very long hostname.\n"); + return 1; + } + + /* restore the original name. */ + sethostname (origname, strlen (origname)); + + return 0; +}