1 /* Test for processing of invalid shadow entries. [BZ #18724]
2 Copyright (C) 2015-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <errno.h>
20 #include <shadow.h>
21 #include <stdbool.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25
26 static bool errors;
27
28 static void
29 check (struct spwd p, const char *expected)
30 {
31 char *buf;
32 size_t buf_size;
33 FILE *f = open_memstream (&buf, &buf_size);
34
35 if (f == NULL)
36 {
37 printf ("open_memstream: %m\n");
38 errors = true;
39 return;
40 }
41
42 int ret = putspent (&p, f);
43
44 if (expected == NULL)
45 {
46 if (ret == -1)
47 {
48 if (errno != EINVAL)
49 {
50 printf ("putspent: unexpected error code: %m\n");
51 errors = true;
52 }
53 }
54 else
55 {
56 printf ("putspent: unexpected success (\"%s\")\n", p.sp_namp);
57 errors = true;
58 }
59 }
60 else
61 {
62 /* Expect success. */
63 size_t expected_length = strlen (expected);
64 if (ret == 0)
65 {
66 long written = ftell (f);
67
68 if (written <= 0 || fflush (f) < 0)
69 {
70 printf ("stream error: %m\n");
71 errors = true;
72 }
73 else if (buf[written - 1] != '\n')
74 {
75 printf ("FAILED: \"%s\" without newline\n", expected);
76 errors = true;
77 }
78 else if (strncmp (buf, expected, written - 1) != 0
79 || written - 1 != expected_length)
80 {
81 printf ("FAILED: \"%s\" (%ld), expected \"%s\" (%zu)\n",
82 buf, written - 1, expected, expected_length);
83 errors = true;
84 }
85 }
86 else
87 {
88 printf ("FAILED: putspent (expected \"%s\"): %m\n", expected);
89 errors = true;
90 }
91 }
92
93 fclose (f);
94 free (buf);
95 }
96
97 static int
98 do_test (void)
99 {
100 check ((struct spwd) {
101 .sp_namp = (char *) "root",
102 },
103 "root::0:0:0:0:0:0:0");
104 check ((struct spwd) {
105 .sp_namp = (char *) "root",
106 .sp_pwdp = (char *) "password",
107 },
108 "root:password:0:0:0:0:0:0:0");
109 check ((struct spwd) {
110 .sp_namp = (char *) "root",
111 .sp_pwdp = (char *) "password",
112 .sp_lstchg = -1,
113 .sp_min = -1,
114 .sp_max = -1,
115 .sp_warn = -1,
116 .sp_inact = -1,
117 .sp_expire = -1,
118 .sp_flag = -1
119 },
120 "root:password:::::::");
121 check ((struct spwd) {
122 .sp_namp = (char *) "root",
123 .sp_pwdp = (char *) "password",
124 .sp_lstchg = 1,
125 .sp_min = 2,
126 .sp_max = 3,
127 .sp_warn = 4,
128 .sp_inact = 5,
129 .sp_expire = 6,
130 .sp_flag = 7
131 },
132 "root:password:1:2:3:4:5:6:7");
133
134 /* Bad values. */
135 {
136 static const char *const bad_strings[] = {
137 ":",
138 "\n",
139 ":bad",
140 "\nbad",
141 "b:ad",
142 "b\nad",
143 "bad:",
144 "bad\n",
145 "b:a\nd",
146 NULL
147 };
148 for (const char *const *bad = bad_strings; *bad != NULL; ++bad)
149 {
150 check ((struct spwd) {
151 .sp_namp = (char *) *bad,
152 }, NULL);
153 check ((struct spwd) {
154 .sp_namp = (char *) "root",
155 .sp_pwdp = (char *) *bad,
156 }, NULL);
157 }
158 }
159
160 return errors;
161 }
162
163 #define TEST_FUNCTION do_test ()
164 #include "../test-skeleton.c"