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 9d31a1d8 2018-03-11 stsp #include "got_error.h"
 24 9d31a1d8 2018-03-11 stsp 
 25 718b3ab0 2018-03-17 stsp #include "got_lib_path.h"
 26 1411938b 2018-02-12 stsp 
 27 4027f31a 2017-11-04 stsp int
 28 4027f31a 2017-11-04 stsp got_path_is_absolute(const char *path)
 29 4027f31a 2017-11-04 stsp {
 30 4027f31a 2017-11-04 stsp 	return path[0] == '/';
 31 4027f31a 2017-11-04 stsp }
 32 4027f31a 2017-11-04 stsp 
 33 4027f31a 2017-11-04 stsp char *
 34 4027f31a 2017-11-04 stsp got_path_get_absolute(const char *relpath) 
 35 4027f31a 2017-11-04 stsp {
 36 4027f31a 2017-11-04 stsp 	char cwd[PATH_MAX];
 37 4027f31a 2017-11-04 stsp 	char *abspath;
 38 4027f31a 2017-11-04 stsp 
 39 4027f31a 2017-11-04 stsp 	if (getcwd(cwd, sizeof(cwd)) == NULL)
 40 4027f31a 2017-11-04 stsp 		return NULL;
 41 4027f31a 2017-11-04 stsp 
 42 4027f31a 2017-11-04 stsp 	if (asprintf(&abspath, "%s/%s/", cwd, relpath) == -1)
 43 4027f31a 2017-11-04 stsp 		return NULL;
 44 4027f31a 2017-11-04 stsp 
 45 4027f31a 2017-11-04 stsp 	return abspath;
 46 4027f31a 2017-11-04 stsp }
 47 4027f31a 2017-11-04 stsp 
 48 4027f31a 2017-11-04 stsp char *
 49 4027f31a 2017-11-04 stsp got_path_normalize(const char *path)
 50 4027f31a 2017-11-04 stsp {
 51 4027f31a 2017-11-04 stsp 	char *resolved;
 52 4027f31a 2017-11-04 stsp 
 53 4027f31a 2017-11-04 stsp 	resolved = realpath(path, NULL);
 54 4027f31a 2017-11-04 stsp 	if (resolved == NULL)
 55 4027f31a 2017-11-04 stsp 		return NULL;
 56 4027f31a 2017-11-04 stsp 	
 57 4027f31a 2017-11-04 stsp 	if (!got_path_is_absolute(resolved)) {
 58 4027f31a 2017-11-04 stsp 		char *abspath = got_path_get_absolute(resolved);
 59 4027f31a 2017-11-04 stsp 		free(resolved);
 60 4027f31a 2017-11-04 stsp 		resolved = abspath;
 61 4027f31a 2017-11-04 stsp 	}
 62 4027f31a 2017-11-04 stsp 
 63 4027f31a 2017-11-04 stsp 	return resolved;
 64 4027f31a 2017-11-04 stsp }
 65 a1fd68d8 2018-01-12 stsp 
 66 9d31a1d8 2018-03-11 stsp const struct got_error *
 67 9d31a1d8 2018-03-11 stsp got_path_segment_count(int *count, const char *path)
 68 9d31a1d8 2018-03-11 stsp {
 69 9d31a1d8 2018-03-11 stsp 	char *s = strdup(path), *p;
 70 9d31a1d8 2018-03-11 stsp 
 71 9d31a1d8 2018-03-11 stsp 	*count = 0;
 72 9d31a1d8 2018-03-11 stsp 
 73 9d31a1d8 2018-03-11 stsp 	if (s == NULL)
 74 0a585a0d 2018-03-17 stsp 		return got_error_from_errno();
 75 9d31a1d8 2018-03-11 stsp 
 76 9d31a1d8 2018-03-11 stsp 	do {
 77 9d31a1d8 2018-03-11 stsp 		p = strsep(&s, "/");
 78 9d31a1d8 2018-03-11 stsp 		if (s && *s != '/')
 79 9d31a1d8 2018-03-11 stsp 			(*count)++;
 80 9d31a1d8 2018-03-11 stsp 	} while (p);
 81 9d31a1d8 2018-03-11 stsp 
 82 9d31a1d8 2018-03-11 stsp 	return NULL;
 83 9d31a1d8 2018-03-11 stsp }
 84 9d31a1d8 2018-03-11 stsp 
 85 a1fd68d8 2018-01-12 stsp FILE *
 86 a1fd68d8 2018-01-12 stsp got_opentemp(void)
 87 a1fd68d8 2018-01-12 stsp {
 88 a1fd68d8 2018-01-12 stsp 	char name[PATH_MAX];
 89 a1fd68d8 2018-01-12 stsp 	int fd;
 90 a1fd68d8 2018-01-12 stsp 	FILE *f;
 91 a1fd68d8 2018-01-12 stsp 
 92 a1fd68d8 2018-01-12 stsp 	if (strlcpy(name, "/tmp/got.XXXXXXXX", sizeof(name)) >= sizeof(name))
 93 a1fd68d8 2018-01-12 stsp 		return NULL;
 94 a1fd68d8 2018-01-12 stsp 
 95 a1fd68d8 2018-01-12 stsp 	fd = mkstemp(name);
 96 a1fd68d8 2018-01-12 stsp 	if (fd < 0)
 97 a1fd68d8 2018-01-12 stsp 		return NULL;
 98 a1fd68d8 2018-01-12 stsp 
 99 0465ef11 2018-01-13 stsp 	unlink(name);
100 a1fd68d8 2018-01-12 stsp 	f = fdopen(fd, "w+");
101 a1fd68d8 2018-01-12 stsp 	if (f == NULL) {
102 a1fd68d8 2018-01-12 stsp 		close(fd);
103 a1fd68d8 2018-01-12 stsp 		return NULL;
104 a1fd68d8 2018-01-12 stsp 	}
105 a1fd68d8 2018-01-12 stsp 
106 a1fd68d8 2018-01-12 stsp 	return f;
107 a1fd68d8 2018-01-12 stsp }
108 9d31a1d8 2018-03-11 stsp 
109 9d31a1d8 2018-03-11 stsp const struct got_error *
110 9d31a1d8 2018-03-11 stsp got_opentemp_named(char **path, FILE **outfile, const char *basepath)
111 9d31a1d8 2018-03-11 stsp {
112 9d31a1d8 2018-03-11 stsp 	const struct got_error *err = NULL;
113 25783624 2018-03-12 stsp 	int fd;
114 9d31a1d8 2018-03-11 stsp 
115 9d31a1d8 2018-03-11 stsp 	if (asprintf(path, "%s-XXXXXX", basepath) == -1) {
116 9d31a1d8 2018-03-11 stsp 		*path = NULL;
117 0a585a0d 2018-03-17 stsp 		return got_error_from_errno();
118 9d31a1d8 2018-03-11 stsp 	}
119 9d31a1d8 2018-03-11 stsp 
120 9d31a1d8 2018-03-11 stsp 	fd = mkstemp(*path);
121 9d31a1d8 2018-03-11 stsp 	if (fd == -1) {
122 9d31a1d8 2018-03-11 stsp 		err = got_error_from_errno();
123 9d31a1d8 2018-03-11 stsp 		free(*path);
124 9d31a1d8 2018-03-11 stsp 		*path = NULL;
125 9d31a1d8 2018-03-11 stsp 		return err;
126 9d31a1d8 2018-03-11 stsp 	}
127 9d31a1d8 2018-03-11 stsp 
128 9d31a1d8 2018-03-11 stsp 	*outfile = fdopen(fd, "w+");
129 9d31a1d8 2018-03-11 stsp 	if (*outfile == NULL) {
130 9d31a1d8 2018-03-11 stsp 		err = got_error_from_errno();
131 9d31a1d8 2018-03-11 stsp 		free(*path);
132 9d31a1d8 2018-03-11 stsp 		*path = NULL;
133 9d31a1d8 2018-03-11 stsp 	}
134 9d31a1d8 2018-03-11 stsp 
135 9d31a1d8 2018-03-11 stsp 	return err;
136 9d31a1d8 2018-03-11 stsp }