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/* Check execvpe script argument handling.
Copyright (C) 2016-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/param.h>
static char *fname1;
static char *fname2;
static char *logname;
static void do_prepare (void);
#define PREPARE(argc, argv) do_prepare ()
static int do_test (void);
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
static void
do_prepare (void)
{
int logfd = create_temp_file ("logfile", &logname);
close (logfd);
int fd1 = create_temp_file ("testscript", &fname1);
dprintf (fd1, "echo foo $1 $2 $3 > %s\n", logname);
fchmod (fd1, 0700);
close (fd1);
int fd2 = create_temp_file ("testscript", &fname2);
dprintf (fd2, "echo foo > %s\n", logname);
fchmod (fd2, 0700);
close (fd2);
}
static int
run_script (const char *fname, char *args[])
{
/* We want to test the `execvpe' function. To do this we restart the
program with an additional parameter. */
int status;
pid_t pid = fork ();
if (pid == 0)
{
execvpe (fname, args, NULL);
puts ("Cannot exec");
exit (EXIT_FAILURE);
}
else if (pid == (pid_t) -1)
{
puts ("Cannot fork");
return 1;
}
/* Wait for the child. */
if (waitpid (pid, &status, 0) != pid)
{
puts ("Wrong child");
return 1;
}
if (WTERMSIG (status) != 0)
{
puts ("Child terminated incorrectly");
return 1;
}
return 0;
}
static int
check_output (const char *expected)
{
/* Check log output. */
FILE *arq = fopen (logname, "r");
if (arq == NULL)
{
puts ("Error opening output file");
return 1;
}
char line[128];
if (fgets (line, sizeof (line), arq) == NULL)
{
puts ("Error reading output file");
return 1;
}
fclose (arq);
if (strcmp (line, expected) != 0)
{
puts ("Output file different than expected");
return 1;
}
return 0;
}
static int
do_test (void)
{
if (setenv ("PATH", test_dir, 1) != 0)
{
puts ("setenv failed");
return 1;
}
/* First check resulting script run with some arguments results in correct
output file. */
char *args1[] = { fname1, (char*) "1", (char *) "2", (char *) "3", NULL };
if (run_script (fname1,args1))
return 1;
if (check_output ("foo 1 2 3\n"))
return 1;
/* Same as before but with an expected empty argument list. */
char *args2[] = { fname2, NULL };
if (run_script (fname2, args2))
return 1;
if (check_output ("foo\n"))
return 1;
/* Same as before but with an empty argument list. */
char *args3[] = { NULL };
if (run_script (fname2, args3))
return 1;
if (check_output ("foo\n"))
return 1;
return 0;
}
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