1 7b19e0f1 2017-11-05 stsp /*
 2 a1fd68d8 2018-01-12 stsp  * Copyright (c) 2018 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 <limits.h>
18 4027f31a 2017-11-04 stsp #include <stdlib.h>
19 4027f31a 2017-11-04 stsp #include <unistd.h>
20 4027f31a 2017-11-04 stsp #include <stdio.h>
21 4027f31a 2017-11-04 stsp #include <string.h>
22 4027f31a 2017-11-04 stsp 
23 1411938b 2018-02-12 stsp #include "got_path_priv.h"
24 1411938b 2018-02-12 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 a1fd68d8 2018-01-12 stsp 
64 a1fd68d8 2018-01-12 stsp FILE *
65 a1fd68d8 2018-01-12 stsp got_opentemp(void)
66 a1fd68d8 2018-01-12 stsp {
67 a1fd68d8 2018-01-12 stsp 	char name[PATH_MAX];
68 a1fd68d8 2018-01-12 stsp 	int fd;
69 a1fd68d8 2018-01-12 stsp 	FILE *f;
70 a1fd68d8 2018-01-12 stsp 
71 a1fd68d8 2018-01-12 stsp 	if (strlcpy(name, "/tmp/got.XXXXXXXX", sizeof(name)) >= sizeof(name))
72 a1fd68d8 2018-01-12 stsp 		return NULL;
73 a1fd68d8 2018-01-12 stsp 
74 a1fd68d8 2018-01-12 stsp 	fd = mkstemp(name);
75 a1fd68d8 2018-01-12 stsp 	if (fd < 0)
76 a1fd68d8 2018-01-12 stsp 		return NULL;
77 a1fd68d8 2018-01-12 stsp 
78 0465ef11 2018-01-13 stsp 	unlink(name);
79 a1fd68d8 2018-01-12 stsp 	f = fdopen(fd, "w+");
80 a1fd68d8 2018-01-12 stsp 	if (f == NULL) {
81 a1fd68d8 2018-01-12 stsp 		close(fd);
82 a1fd68d8 2018-01-12 stsp 		return NULL;
83 a1fd68d8 2018-01-12 stsp 	}
84 a1fd68d8 2018-01-12 stsp 
85 a1fd68d8 2018-01-12 stsp 	return f;
86 a1fd68d8 2018-01-12 stsp }