1 7b19e0f1 2017-11-05 stsp /*
 2 7b19e0f1 2017-11-05 stsp  * Copyright (c) 2017 Stefan Sperling <stsp@openbsd.org>
 3 7b19e0f1 2017-11-05 stsp  *
 4 7b19e0f1 2017-11-05 stsp  * Permission to use, copy, modify, and distribute this software for any
 5 7b19e0f1 2017-11-05 stsp  * purpose with or without fee is hereby granted, provided that the above
 6 7b19e0f1 2017-11-05 stsp  * copyright notice and this permission notice appear in all copies.
 7 7b19e0f1 2017-11-05 stsp  *
 8 7b19e0f1 2017-11-05 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 7b19e0f1 2017-11-05 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 7b19e0f1 2017-11-05 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 7b19e0f1 2017-11-05 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 7b19e0f1 2017-11-05 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 7b19e0f1 2017-11-05 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 7b19e0f1 2017-11-05 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 7b19e0f1 2017-11-05 stsp  */
16 7b19e0f1 2017-11-05 stsp 
17 4027f31a 2017-11-04 stsp /* #include <sys/syslimits.h> */
18 4027f31a 2017-11-04 stsp 
19 4027f31a 2017-11-04 stsp #include <limits.h>
20 4027f31a 2017-11-04 stsp #include <stdlib.h>
21 4027f31a 2017-11-04 stsp #include <unistd.h>
22 4027f31a 2017-11-04 stsp #include <stdio.h>
23 4027f31a 2017-11-04 stsp #include <string.h>
24 4027f31a 2017-11-04 stsp 
25 4027f31a 2017-11-04 stsp int
26 4027f31a 2017-11-04 stsp got_path_is_absolute(const char *path)
27 4027f31a 2017-11-04 stsp {
28 4027f31a 2017-11-04 stsp 	return path[0] == '/';
29 4027f31a 2017-11-04 stsp }
30 4027f31a 2017-11-04 stsp 
31 4027f31a 2017-11-04 stsp char *
32 4027f31a 2017-11-04 stsp got_path_get_absolute(const char *relpath) 
33 4027f31a 2017-11-04 stsp {
34 4027f31a 2017-11-04 stsp 	char cwd[PATH_MAX];
35 4027f31a 2017-11-04 stsp 	char *abspath;
36 4027f31a 2017-11-04 stsp 
37 4027f31a 2017-11-04 stsp 	if (getcwd(cwd, sizeof(cwd)) == NULL)
38 4027f31a 2017-11-04 stsp 		return NULL;
39 4027f31a 2017-11-04 stsp 
40 4027f31a 2017-11-04 stsp 	if (asprintf(&abspath, "%s/%s/", cwd, relpath) == -1)
41 4027f31a 2017-11-04 stsp 		return NULL;
42 4027f31a 2017-11-04 stsp 
43 4027f31a 2017-11-04 stsp 	return abspath;
44 4027f31a 2017-11-04 stsp }
45 4027f31a 2017-11-04 stsp 
46 4027f31a 2017-11-04 stsp char *
47 4027f31a 2017-11-04 stsp got_path_normalize(const char *path)
48 4027f31a 2017-11-04 stsp {
49 4027f31a 2017-11-04 stsp 	char *resolved;
50 4027f31a 2017-11-04 stsp 
51 4027f31a 2017-11-04 stsp 	resolved = realpath(path, NULL);
52 4027f31a 2017-11-04 stsp 	if (resolved == NULL)
53 4027f31a 2017-11-04 stsp 		return NULL;
54 4027f31a 2017-11-04 stsp 	
55 4027f31a 2017-11-04 stsp 	if (!got_path_is_absolute(resolved)) {
56 4027f31a 2017-11-04 stsp 		char *abspath = got_path_get_absolute(resolved);
57 4027f31a 2017-11-04 stsp 		free(resolved);
58 4027f31a 2017-11-04 stsp 		resolved = abspath;
59 4027f31a 2017-11-04 stsp 	}
60 4027f31a 2017-11-04 stsp 
61 4027f31a 2017-11-04 stsp 	return resolved;
62 4027f31a 2017-11-04 stsp }
63 4027f31a 2017-11-04 stsp 
64 4027f31a 2017-11-04 stsp int
65 4027f31a 2017-11-04 stsp got_path_is_normalized(const char *path)
66 4027f31a 2017-11-04 stsp {
67 4027f31a 2017-11-04 stsp 	char *normpath;
68 4027f31a 2017-11-04 stsp 	int ret;
69 4027f31a 2017-11-04 stsp 
70 4027f31a 2017-11-04 stsp 	normpath = got_path_normalize(path);
71 4027f31a 2017-11-04 stsp 	ret = (strcmp(normpath, path) == 0);
72 4027f31a 2017-11-04 stsp 	free(normpath);
73 4027f31a 2017-11-04 stsp 
74 4027f31a 2017-11-04 stsp 	return ret;
75 4027f31a 2017-11-04 stsp }