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1 /* $NetBSD: t_realpath.c,v 1.2 2012/03/27 07:54:58 njoly Exp $ */
2
3 /*-
4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Jukka Ruohonen.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: t_realpath.c,v 1.2 2012/03/27 07:54:58 njoly Exp $");
33
34 #include <sys/param.h>
35
36 #include <atf-c.h>
37 #include <fcntl.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <unistd.h>
42
43 static const struct {
44         const char *path;
45         const char *result;
46 } paths[] = {
47
48         { "/",                  "/"             },
49         { "///////",            "/"             },
50         { "",                   NULL            },
51         { "       ",            NULL            },
52         { "/      ",            NULL            },
53         { "      /",            NULL            },
54         { "/etc///",            "/etc"          },
55         { "///////etc",         "/etc"          },
56         { "/a/b/c/d/e",         NULL            },
57         { "    /usr/bin    ",   NULL            },
58         { "\\//////usr//bin",   NULL            },
59         { "//usr//bin//",       "/usr/bin"      },
60         { "//////usr//bin//",   "/usr/bin"      },
61         { "/usr/bin//////////", "/usr/bin"      },
62 };
63
64 ATF_TC(realpath_basic);
65 ATF_TC_HEAD(realpath_basic, tc)
66 {
67         atf_tc_set_md_var(tc, "descr", "A basic test of realpath(3)");
68 }
69
70 ATF_TC_BODY(realpath_basic, tc)
71 {
72         char buf[MAXPATHLEN];
73         char *ptr;
74         size_t i;
75
76         for (i = 0; i < __arraycount(paths); i++) {
77
78                 (void)memset(buf, '\0', sizeof(buf));
79
80                 ptr = realpath(paths[i].path, buf);
81
82                 if (ptr == NULL && paths[i].result == NULL)
83                         continue;
84
85                 if (ptr == NULL && paths[i].result != NULL)
86                         atf_tc_fail("realpath failed for '%s'", paths[i].path);
87
88                 if (strcmp(paths[i].result, buf) != 0)
89                         atf_tc_fail("expected '%s', got '%s'",
90                             paths[i].result, buf);
91         }
92 }
93
94 ATF_TC(realpath_huge);
95 ATF_TC_HEAD(realpath_huge, tc)
96 {
97         atf_tc_set_md_var(tc, "descr", "Test huge path with realpath(3)");
98 }
99
100 ATF_TC_BODY(realpath_huge, tc)
101 {
102         char result[MAXPATHLEN] = { 0 };
103         char buffer[MAXPATHLEN] = { 0 };
104
105         (void)memset(buffer, '/', sizeof(buffer) - 1);
106
107         ATF_CHECK(realpath(buffer, result) != NULL);
108         ATF_CHECK(strlen(result) == 1);
109         ATF_CHECK(result[0] == '/');
110 }
111
112 ATF_TC(realpath_symlink);
113 ATF_TC_HEAD(realpath_symlink, tc)
114 {
115         atf_tc_set_md_var(tc, "descr", "Test symbolic link with realpath(3)");
116 }
117
118 ATF_TC_BODY(realpath_symlink, tc)
119 {
120         char path[MAXPATHLEN] = { 0 };
121         char slnk[MAXPATHLEN] = { 0 };
122         char resb[MAXPATHLEN] = { 0 };
123         int fd;
124
125         (void)getcwd(path, sizeof(path));
126         (void)getcwd(slnk, sizeof(slnk));
127
128         (void)strlcat(path, "/realpath", sizeof(path));
129         (void)strlcat(slnk, "/symbolic", sizeof(slnk));
130
131         fd = open(path, O_RDONLY | O_CREAT, 0600);
132
133         ATF_REQUIRE(fd >= 0);
134         ATF_REQUIRE(symlink(path, slnk) == 0);
135         ATF_REQUIRE(close(fd) == 0);
136
137         ATF_REQUIRE(realpath(slnk, resb) != NULL);
138         ATF_REQUIRE(strcmp(resb, path) == 0);
139
140         ATF_REQUIRE(unlink(path) == 0);
141         ATF_REQUIRE(unlink(slnk) == 0);
142 }
143
144 ATF_TP_ADD_TCS(tp)
145 {
146
147         ATF_TP_ADD_TC(tp, realpath_basic);
148         ATF_TP_ADD_TC(tp, realpath_huge);
149         ATF_TP_ADD_TC(tp, realpath_symlink);
150
151         return atf_no_error();
152 }