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Bruno Haible
8f88d159d4
* tests/**/*.[hc]: Use streq instead of STREQ. * tests/macros.h (STREQ): Remove macro. * modules/*-tests (Dependencies): Add streq.
105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
/* Test the getusershell, setusershell, endusershell functions.
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Copyright (C) 2024-2026 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation, either version 3 of the License,
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or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Collin Funk <collin.funk1@gmail.com>, 2024. */
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#include <config.h>
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/* Specification. */
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#include <unistd.h>
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#include "signature.h"
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SIGNATURE_CHECK (getusershell, char *, (void));
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SIGNATURE_CHECK (setusershell, void, (void));
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SIGNATURE_CHECK (endusershell, void, (void));
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "macros.h"
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/* The shell names in the order they appear in '/etc/shells'. */
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static char **shells = NULL;
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static size_t shell_count = 0;
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/* Prepare the shells array. */
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static void
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first_pass (void)
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{
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char *ptr;
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size_t i = 0;
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/* Avoid reallocation. */
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shell_count = 16;
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shells = malloc (shell_count * sizeof (char *));
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ASSERT (shells != NULL);
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for (; (ptr = getusershell ()); ++i)
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{
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/* Make sure comments and empty lines are ignored. */
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ASSERT (ptr[0] != '#');
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ASSERT (ptr[0] != '\0');
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if (i >= shell_count)
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{
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shell_count *= 2;
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shells = realloc (shells, shell_count * sizeof (char *));
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ASSERT (shells != NULL);
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}
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shells[i] = strdup (ptr);
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ASSERT (shells[i] != NULL);
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}
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shell_count = i;
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}
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/* Assuming that '/etc/shells' does not change during the duration of this
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test, check that setusershell puts us back at the start of the file. */
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static void
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second_pass (void)
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{
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char *ptr;
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/* Return to the start of the file. */
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setusershell ();
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/* Make sure order is preserved. */
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for (size_t i = 0; i < shell_count; ++i)
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{
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ptr = getusershell ();
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ASSERT (ptr != NULL);
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ASSERT (streq (ptr, shells[i]));
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printf ("%s\n", ptr);
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free (shells[i]);
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}
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/* End of file. */
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ASSERT (getusershell () == NULL);
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/* Clean up. */
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free (shells);
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endusershell ();
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}
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int
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main (void)
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{
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first_pass ();
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second_pass ();
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return test_exit_status;
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}
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