1 | /* Test for processing of invalid passwd entries. [BZ #18724] |
2 | Copyright (C) 2015-2022 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 <pwd.h> |
21 | #include <stdbool.h> |
22 | #include <stdio.h> |
23 | #include <string.h> |
24 | #include <stdlib.h> |
25 | |
26 | static bool errors; |
27 | |
28 | static void |
29 | check (struct passwd p, const char *expected) |
30 | { |
31 | char *buf; |
32 | size_t buf_size; |
33 | FILE *f = open_memstream (bufloc: &buf, sizeloc: &buf_size); |
34 | |
35 | if (f == NULL) |
36 | { |
37 | printf (format: "open_memstream: %m\n" ); |
38 | errors = true; |
39 | return; |
40 | } |
41 | |
42 | int ret = putpwent (p: &p, f: f); |
43 | |
44 | if (expected == NULL) |
45 | { |
46 | if (ret == -1) |
47 | { |
48 | if (errno != EINVAL) |
49 | { |
50 | printf (format: "putpwent: unexpected error code: %m\n" ); |
51 | errors = true; |
52 | } |
53 | } |
54 | else |
55 | { |
56 | printf (format: "putpwent: unexpected success (\"%s\")\n" , p.pw_name); |
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 (stream: f); |
67 | |
68 | if (written <= 0 || fflush (f) < 0) |
69 | { |
70 | printf (format: "stream error: %m\n" ); |
71 | errors = true; |
72 | } |
73 | else if (buf[written - 1] != '\n') |
74 | { |
75 | printf (format: "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 (format: "FAILED: \"%s\" (%ld), expected \"%s\" (%zu)\n" , |
82 | buf, written - 1, expected, expected_length); |
83 | errors = true; |
84 | } |
85 | } |
86 | else |
87 | { |
88 | printf (format: "FAILED: putpwent (expected \"%s\"): %m\n" , expected); |
89 | errors = true; |
90 | } |
91 | } |
92 | |
93 | fclose (f); |
94 | free (ptr: buf); |
95 | } |
96 | |
97 | static int |
98 | do_test (void) |
99 | { |
100 | check (p: (struct passwd) { |
101 | .pw_name = (char *) "root" , |
102 | }, |
103 | expected: "root::0:0:::" ); |
104 | check (p: (struct passwd) { |
105 | .pw_name = (char *) "root" , |
106 | .pw_passwd = (char *) "password" , |
107 | }, |
108 | expected: "root:password:0:0:::" ); |
109 | check (p: (struct passwd) { |
110 | .pw_name = (char *) "root" , |
111 | .pw_passwd = (char *) "password" , |
112 | .pw_uid = 12, |
113 | .pw_gid = 34, |
114 | .pw_gecos = (char *) "gecos" , |
115 | .pw_dir = (char *) "home" , |
116 | .pw_shell = (char *) "shell" , |
117 | }, |
118 | expected: "root:password:12:34:gecos:home:shell" ); |
119 | check (p: (struct passwd) { |
120 | .pw_name = (char *) "root" , |
121 | .pw_passwd = (char *) "password" , |
122 | .pw_uid = 12, |
123 | .pw_gid = 34, |
124 | .pw_gecos = (char *) ":ge\n:cos\n" , |
125 | .pw_dir = (char *) "home" , |
126 | .pw_shell = (char *) "shell" , |
127 | }, |
128 | expected: "root:password:12:34: ge cos :home:shell" ); |
129 | |
130 | /* Bad values. */ |
131 | { |
132 | static const char *const bad_strings[] = { |
133 | ":" , |
134 | "\n" , |
135 | ":bad" , |
136 | "\nbad" , |
137 | "b:ad" , |
138 | "b\nad" , |
139 | "bad:" , |
140 | "bad\n" , |
141 | "b:a\nd" , |
142 | NULL |
143 | }; |
144 | for (const char *const *bad = bad_strings; *bad != NULL; ++bad) |
145 | { |
146 | check (p: (struct passwd) { |
147 | .pw_name = (char *) *bad, |
148 | }, NULL); |
149 | check (p: (struct passwd) { |
150 | .pw_name = (char *) "root" , |
151 | .pw_passwd = (char *) *bad, |
152 | }, NULL); |
153 | check (p: (struct passwd) { |
154 | .pw_name = (char *) "root" , |
155 | .pw_dir = (char *) *bad, |
156 | }, NULL); |
157 | check (p: (struct passwd) { |
158 | .pw_name = (char *) "root" , |
159 | .pw_shell = (char *) *bad, |
160 | }, NULL); |
161 | } |
162 | } |
163 | |
164 | return errors > 0; |
165 | } |
166 | |
167 | #define TEST_FUNCTION do_test () |
168 | #include "../test-skeleton.c" |
169 | |