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