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91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/* Copyright (C) 2012-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* Test that secure_getenv works by invoking the test as a SGID
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program with a group ID from the supplementary group list. This
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test can fail spuriously if the user is not a member of a suitable
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supplementary group. */
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <support/check.h>
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#include <support/support.h>
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#include <support/capture_subprocess.h>
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#include <support/test-driver.h>
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static char MAGIC_ARGUMENT[] = "run-actual-test";
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static int
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do_test (void)
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{
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if (getenv ("PATH") == NULL)
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{
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printf ("PATH not set\n");
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exit (1);
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}
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if (secure_getenv ("PATH") == NULL)
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{
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printf ("PATH not set according to secure_getenv\n");
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exit (1);
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}
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if (strcmp (getenv ("PATH"), secure_getenv ("PATH")) != 0)
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{
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printf ("PATH mismatch (%s, %s)\n",
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getenv ("PATH"), secure_getenv ("PATH"));
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exit (1);
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}
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int status = support_capture_subprogram_self_sgid (MAGIC_ARGUMENT);
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if (WEXITSTATUS (status) == EXIT_UNSUPPORTED)
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return EXIT_UNSUPPORTED;
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if (!WIFEXITED (status))
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FAIL_EXIT1 ("Unexpected exit status %d from child process\n", status);
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return 0;
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}
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static void
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alternative_main (int argc, char **argv)
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{
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if (argc == 2 && strcmp (argv[1], MAGIC_ARGUMENT) == 0)
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{
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if (getgid () == getegid ())
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/* This can happen if the file system is mounted nosuid. */
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FAIL_UNSUPPORTED ("SGID failed: GID and EGID match (%jd)\n",
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(intmax_t) getgid ());
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if (getenv ("PATH") == NULL)
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FAIL_EXIT (3, "PATH variable not present\n");
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if (secure_getenv ("PATH") != NULL)
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FAIL_EXIT (4, "PATH variable not filtered out\n");
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exit (EXIT_SUCCESS);
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}
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}
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#define PREPARE alternative_main
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#include <support/test-driver.c>
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