1 /* Test of create_pipe_in/wait_subprocess.
2 Copyright (C) 2020-2021 Free Software Foundation, Inc.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, see <https://www.gnu.org/licenses/>. */
16
17 #include <config.h>
18
19 #include "spawn-pipe.h"
20 #include "wait-process.h"
21
22 #include <errno.h>
23 #include <stdbool.h>
24 #include <stdio.h>
25 #include <string.h>
26 #include <unistd.h>
27
28 #include "macros.h"
29
30 int
main()31 main ()
32 {
33 /* Check an invocation of an executable script.
34 This should only be supported if the script has a '#!' marker; otherwise
35 it is unsecure: <https://sourceware.org/bugzilla/show_bug.cgi?id=13134>.
36 POSIX says that the execlp() and execvp() functions support executing
37 shell scripts
38 <https://pubs.opengroup.org/onlinepubs/9699919799/functions/exec.html>,
39 but this is considered an antiquated feature. */
40 int fd[1];
41 pid_t pid;
42
43 {
44 size_t i;
45
46 for (i = 0; i < 2; i++)
47 {
48 const char *progname =
49 (i == 0 ? "executable-script" : "executable-script.sh");
50 const char *prog_path =
51 (i == 0 ? SRCDIR "executable-script" : SRCDIR "executable-script.sh");
52 const char *prog_argv[2] = { prog_path, NULL };
53
54 pid = create_pipe_in (progname, prog_argv[0], prog_argv, NULL,
55 NULL, false, true, false, fd);
56 if (pid >= 0)
57 {
58 /* Wait for child. */
59 ASSERT (wait_subprocess (pid, progname, true, true, true, false,
60 NULL)
61 == 127);
62 }
63 else
64 {
65 ASSERT (pid == -1);
66 ASSERT (errno == ENOEXEC);
67 }
68 }
69 }
70
71 #if defined _WIN32 && !defined __CYGWIN__
72 /* On native Windows, scripts - even with '#!' marker - are not executable.
73 Only .bat and .cmd files are. */
74 fprintf (stderr, "Skipping test: scripts are not executable on this platform.\n");
75 return 77;
76 #else
77 {
78 const char *progname = "executable-shell-script";
79 const char *prog_path = SRCDIR "executable-shell-script";
80 const char *prog_argv[2] = { prog_path, NULL };
81
82 pid = create_pipe_in (progname, prog_argv[0], prog_argv, NULL,
83 NULL, false, true, false, fd);
84 ASSERT (pid >= 0);
85 ASSERT (fd[0] > STDERR_FILENO);
86
87 /* Get child's output. */
88 char buffer[1024];
89 FILE *fp = fdopen (fd[0], "r");
90 ASSERT (fp != NULL);
91 ASSERT (fread (buffer, 1, sizeof (buffer), fp) == 11);
92
93 /* Check the result. */
94 ASSERT (memcmp (buffer, "Halle Potta", 11) == 0);
95
96 /* Wait for child. */
97 ASSERT (wait_subprocess (pid, progname, true, false, true, true, NULL) == 0);
98
99 ASSERT (fclose (fp) == 0);
100 }
101
102 return 0;
103 #endif
104 }
105