1 7b19e0f1 2017-11-05 stsp /*
  2 5d56da81 2019-01-13 stsp  * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
  3 e6eac3b8 2018-06-17 stsp  * Copyright (c) 2015 Theo de Raadt <deraadt@openbsd.org>
  4 7b19e0f1 2017-11-05 stsp  *
  5 7b19e0f1 2017-11-05 stsp  * Permission to use, copy, modify, and distribute this software for any
  6 7b19e0f1 2017-11-05 stsp  * purpose with or without fee is hereby granted, provided that the above
  7 7b19e0f1 2017-11-05 stsp  * copyright notice and this permission notice appear in all copies.
  8 7b19e0f1 2017-11-05 stsp  *
  9 7b19e0f1 2017-11-05 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 10 7b19e0f1 2017-11-05 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 11 7b19e0f1 2017-11-05 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 12 7b19e0f1 2017-11-05 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 13 7b19e0f1 2017-11-05 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 14 7b19e0f1 2017-11-05 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 15 7b19e0f1 2017-11-05 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 16 7b19e0f1 2017-11-05 stsp  */
 17 7b19e0f1 2017-11-05 stsp 
 18 e08cc72d 2019-02-05 stsp #include <sys/queue.h>
 19 0cd1c46a 2019-03-11 stsp #include <sys/stat.h>
 20 e08cc72d 2019-02-05 stsp 
 21 0cd1c46a 2019-03-11 stsp #include <errno.h>
 22 4027f31a 2017-11-04 stsp #include <limits.h>
 23 0cd1c46a 2019-03-11 stsp #include <libgen.h>
 24 4027f31a 2017-11-04 stsp #include <stdlib.h>
 25 4027f31a 2017-11-04 stsp #include <unistd.h>
 26 4027f31a 2017-11-04 stsp #include <stdio.h>
 27 4027f31a 2017-11-04 stsp #include <string.h>
 28 3c45a30a 2019-05-12 jcs #include <dirent.h>
 29 4027f31a 2017-11-04 stsp 
 30 9d31a1d8 2018-03-11 stsp #include "got_error.h"
 31 324d37e7 2019-05-11 stsp #include "got_path.h"
 32 1411938b 2018-02-12 stsp 
 33 e0159033 2019-01-08 stsp #ifndef MIN
 34 e0159033 2019-01-08 stsp #define	MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
 35 e0159033 2019-01-08 stsp #endif
 36 e0159033 2019-01-08 stsp 
 37 4027f31a 2017-11-04 stsp int
 38 4027f31a 2017-11-04 stsp got_path_is_absolute(const char *path)
 39 4027f31a 2017-11-04 stsp {
 40 4027f31a 2017-11-04 stsp 	return path[0] == '/';
 41 4027f31a 2017-11-04 stsp }
 42 4027f31a 2017-11-04 stsp 
 43 4027f31a 2017-11-04 stsp char *
 44 4027f31a 2017-11-04 stsp got_path_get_absolute(const char *relpath) 
 45 4027f31a 2017-11-04 stsp {
 46 4027f31a 2017-11-04 stsp 	char cwd[PATH_MAX];
 47 4027f31a 2017-11-04 stsp 	char *abspath;
 48 4027f31a 2017-11-04 stsp 
 49 4027f31a 2017-11-04 stsp 	if (getcwd(cwd, sizeof(cwd)) == NULL)
 50 4027f31a 2017-11-04 stsp 		return NULL;
 51 4027f31a 2017-11-04 stsp 
 52 4027f31a 2017-11-04 stsp 	if (asprintf(&abspath, "%s/%s/", cwd, relpath) == -1)
 53 4027f31a 2017-11-04 stsp 		return NULL;
 54 4027f31a 2017-11-04 stsp 
 55 4027f31a 2017-11-04 stsp 	return abspath;
 56 4027f31a 2017-11-04 stsp }
 57 4027f31a 2017-11-04 stsp 
 58 4027f31a 2017-11-04 stsp char *
 59 4027f31a 2017-11-04 stsp got_path_normalize(const char *path)
 60 4027f31a 2017-11-04 stsp {
 61 4027f31a 2017-11-04 stsp 	char *resolved;
 62 4027f31a 2017-11-04 stsp 
 63 4027f31a 2017-11-04 stsp 	resolved = realpath(path, NULL);
 64 4027f31a 2017-11-04 stsp 	if (resolved == NULL)
 65 4027f31a 2017-11-04 stsp 		return NULL;
 66 4027f31a 2017-11-04 stsp 	
 67 4027f31a 2017-11-04 stsp 	if (!got_path_is_absolute(resolved)) {
 68 4027f31a 2017-11-04 stsp 		char *abspath = got_path_get_absolute(resolved);
 69 4027f31a 2017-11-04 stsp 		free(resolved);
 70 4027f31a 2017-11-04 stsp 		resolved = abspath;
 71 4027f31a 2017-11-04 stsp 	}
 72 4027f31a 2017-11-04 stsp 
 73 4027f31a 2017-11-04 stsp 	return resolved;
 74 4027f31a 2017-11-04 stsp }
 75 e6eac3b8 2018-06-17 stsp 
 76 f7d20e89 2018-06-17 stsp /* based on canonpath() from kern_pledge.c */
 77 f7d20e89 2018-06-17 stsp const struct got_error *
 78 e6eac3b8 2018-06-17 stsp got_canonpath(const char *input, char *buf, size_t bufsize)
 79 e6eac3b8 2018-06-17 stsp {
 80 e6eac3b8 2018-06-17 stsp 	const char *p;
 81 e6eac3b8 2018-06-17 stsp 	char *q;
 82 e6eac3b8 2018-06-17 stsp 
 83 e6eac3b8 2018-06-17 stsp 	/* can't canon relative paths, don't bother */
 84 e6eac3b8 2018-06-17 stsp 	if (!got_path_is_absolute(input)) {
 85 e6eac3b8 2018-06-17 stsp 		if (strlcpy(buf, input, bufsize) >= bufsize)
 86 f7d20e89 2018-06-17 stsp 			return got_error(GOT_ERR_NO_SPACE);
 87 f7d20e89 2018-06-17 stsp 		return NULL;
 88 e6eac3b8 2018-06-17 stsp 	}
 89 e6eac3b8 2018-06-17 stsp 
 90 e6eac3b8 2018-06-17 stsp 	p = input;
 91 e6eac3b8 2018-06-17 stsp 	q = buf;
 92 e6eac3b8 2018-06-17 stsp 	while (*p && (q - buf < bufsize)) {
 93 e6eac3b8 2018-06-17 stsp 		if (p[0] == '/' && (p[1] == '/' || p[1] == '\0')) {
 94 e6eac3b8 2018-06-17 stsp 			p += 1;
 95 e6eac3b8 2018-06-17 stsp 
 96 e6eac3b8 2018-06-17 stsp 		} else if (p[0] == '/' && p[1] == '.' &&
 97 e6eac3b8 2018-06-17 stsp 		    (p[2] == '/' || p[2] == '\0')) {
 98 e6eac3b8 2018-06-17 stsp 			p += 2;
 99 e6eac3b8 2018-06-17 stsp 
100 e6eac3b8 2018-06-17 stsp 		} else if (p[0] == '/' && p[1] == '.' && p[2] == '.' &&
101 e6eac3b8 2018-06-17 stsp 		    (p[3] == '/' || p[3] == '\0')) {
102 e6eac3b8 2018-06-17 stsp 			p += 3;
103 e6eac3b8 2018-06-17 stsp 			if (q != buf)	/* "/../" at start of buf */
104 e6eac3b8 2018-06-17 stsp 				while (*--q != '/')
105 e6eac3b8 2018-06-17 stsp 					continue;
106 e6eac3b8 2018-06-17 stsp 
107 e6eac3b8 2018-06-17 stsp 		} else {
108 e6eac3b8 2018-06-17 stsp 			*q++ = *p++;
109 e6eac3b8 2018-06-17 stsp 		}
110 e6eac3b8 2018-06-17 stsp 	}
111 e6eac3b8 2018-06-17 stsp 	if ((*p == '\0') && (q - buf < bufsize)) {
112 e6eac3b8 2018-06-17 stsp 		*q = 0;
113 f7d20e89 2018-06-17 stsp 		return NULL;
114 e6eac3b8 2018-06-17 stsp 	} else
115 f7d20e89 2018-06-17 stsp 		return got_error(GOT_ERR_NO_SPACE);
116 e6eac3b8 2018-06-17 stsp }
117 04ca23f4 2018-07-16 stsp 
118 04ca23f4 2018-07-16 stsp const struct got_error *
119 04ca23f4 2018-07-16 stsp got_path_skip_common_ancestor(char **child, const char *parent_abspath,
120 04ca23f4 2018-07-16 stsp     const char *abspath)
121 04ca23f4 2018-07-16 stsp {
122 04ca23f4 2018-07-16 stsp 	const struct got_error *err = NULL;
123 04ca23f4 2018-07-16 stsp 	size_t len_parent, len, bufsize;
124 db5ba8ed 2019-03-26 stsp 
125 db5ba8ed 2019-03-26 stsp 	*child = NULL;
126 04ca23f4 2018-07-16 stsp 
127 04ca23f4 2018-07-16 stsp 	len_parent = strlen(parent_abspath);
128 04ca23f4 2018-07-16 stsp 	len = strlen(abspath);
129 04ca23f4 2018-07-16 stsp 	if (len_parent >= len)
130 04ca23f4 2018-07-16 stsp 		return got_error(GOT_ERR_BAD_PATH);
131 04ca23f4 2018-07-16 stsp 	if (strncmp(parent_abspath, abspath, len_parent) != 0)
132 04ca23f4 2018-07-16 stsp 		return got_error(GOT_ERR_BAD_PATH);
133 eb4304b9 2019-05-09 stsp 	if (!got_path_is_root_dir(parent_abspath) && abspath[len_parent] != '/')
134 04ca23f4 2018-07-16 stsp 		return got_error(GOT_ERR_BAD_PATH);
135 5e3ce57a 2019-03-26 stsp 	while (abspath[len_parent] == '/')
136 5e3ce57a 2019-03-26 stsp 		abspath++;
137 04ca23f4 2018-07-16 stsp 	bufsize = len - len_parent + 1;
138 04ca23f4 2018-07-16 stsp 	*child = malloc(bufsize);
139 04ca23f4 2018-07-16 stsp 	if (*child == NULL)
140 230a42bd 2019-05-11 jcs 		return got_error_prefix_errno("malloc");
141 04ca23f4 2018-07-16 stsp 	if (strlcpy(*child, abspath + len_parent, bufsize) >= bufsize) {
142 230a42bd 2019-05-11 jcs 		err = got_error_prefix_errno("strlcpy");
143 04ca23f4 2018-07-16 stsp 		free(*child);
144 04ca23f4 2018-07-16 stsp 		*child = NULL;
145 04ca23f4 2018-07-16 stsp 		return err;
146 04ca23f4 2018-07-16 stsp 	}
147 04ca23f4 2018-07-16 stsp 	return NULL;
148 04ca23f4 2018-07-16 stsp }
149 31cedeaf 2018-09-15 stsp 
150 31cedeaf 2018-09-15 stsp int
151 31cedeaf 2018-09-15 stsp got_path_is_root_dir(const char *path)
152 31cedeaf 2018-09-15 stsp {
153 31cedeaf 2018-09-15 stsp 	return (path[0] == '/' && path[1] == '\0');
154 a129376b 2019-03-28 stsp }
155 a129376b 2019-03-28 stsp 
156 a129376b 2019-03-28 stsp int
157 a129376b 2019-03-28 stsp got_path_is_current_dir(const char *path)
158 a129376b 2019-03-28 stsp {
159 a129376b 2019-03-28 stsp 	return (path[0] == '.' && path[1] == '\0');
160 31cedeaf 2018-09-15 stsp }
161 e0159033 2019-01-08 stsp 
162 e0159033 2019-01-08 stsp int
163 8da9e5f4 2019-01-12 stsp got_path_is_child(const char *child, const char *parent, size_t parent_len)
164 8da9e5f4 2019-01-12 stsp {
165 eb4304b9 2019-05-09 stsp 	if (parent_len == 0 || got_path_is_root_dir(parent))
166 8da9e5f4 2019-01-12 stsp 		return 1;
167 8da9e5f4 2019-01-12 stsp 
168 8da9e5f4 2019-01-12 stsp 	if (strncmp(parent, child, parent_len) != 0)
169 8da9e5f4 2019-01-12 stsp 		return 0;
170 8da9e5f4 2019-01-12 stsp 	if (child[parent_len] != '/')
171 8da9e5f4 2019-01-12 stsp 		return 0;
172 8da9e5f4 2019-01-12 stsp 
173 8da9e5f4 2019-01-12 stsp 	return 1;
174 8da9e5f4 2019-01-12 stsp }
175 8da9e5f4 2019-01-12 stsp 
176 8da9e5f4 2019-01-12 stsp int
177 1beed999 2019-01-12 stsp got_path_cmp(const char *path1, const char *path2)
178 e0159033 2019-01-08 stsp {
179 e0159033 2019-01-08 stsp 	size_t len1 = strlen(path1);
180 e0159033 2019-01-08 stsp 	size_t len2 = strlen(path2);
181 e0159033 2019-01-08 stsp 	size_t min_len = MIN(len1, len2);
182 e0159033 2019-01-08 stsp 	size_t i = 0;
183 e0159033 2019-01-08 stsp 
184 e08cc72d 2019-02-05 stsp 	/* Leading directory separators are insignificant. */
185 e08cc72d 2019-02-05 stsp 	while (path1[0] == '/')
186 e08cc72d 2019-02-05 stsp 		path1++;
187 e08cc72d 2019-02-05 stsp 	while (path2[0] == '/')
188 e08cc72d 2019-02-05 stsp 		path2++;
189 e08cc72d 2019-02-05 stsp 
190 e08cc72d 2019-02-05 stsp 	len1 = strlen(path1);
191 e08cc72d 2019-02-05 stsp 	len2 = strlen(path2);
192 e08cc72d 2019-02-05 stsp 	min_len = MIN(len1, len2);
193 e08cc72d 2019-02-05 stsp 
194 e0159033 2019-01-08 stsp 	/* Skip over common prefix. */
195 e0159033 2019-01-08 stsp 	while (i < min_len && path1[i] == path2[i])
196 e0159033 2019-01-08 stsp 		i++;
197 e0159033 2019-01-08 stsp 
198 e08cc72d 2019-02-05 stsp 	/* Are the paths exactly equal (besides path separators)? */
199 e0159033 2019-01-08 stsp 	if (len1 == len2 && i >= min_len)
200 e0159033 2019-01-08 stsp 		return 0;
201 e0159033 2019-01-08 stsp 
202 e08cc72d 2019-02-05 stsp 	/* Skip over redundant trailing path seperators. */
203 e08cc72d 2019-02-05 stsp 	while (path1[i] == '/' && path1[i + 1] == '/')
204 e08cc72d 2019-02-05 stsp 		path1++;
205 e08cc72d 2019-02-05 stsp 	while (path2[i] == '/' && path2[i + 1] == '/')
206 e08cc72d 2019-02-05 stsp 		path2++;
207 e08cc72d 2019-02-05 stsp 
208 e08cc72d 2019-02-05 stsp 	/* Trailing path separators are insignificant. */
209 e08cc72d 2019-02-05 stsp 	if (path1[i] == '/' && path1[i + 1] == '\0' && path2[i] == '\0')
210 e08cc72d 2019-02-05 stsp 		return 0;
211 e08cc72d 2019-02-05 stsp 	if (path2[i] == '/' && path2[i + 1] == '\0' && path1[i] == '\0')
212 e08cc72d 2019-02-05 stsp 		return 0;
213 e08cc72d 2019-02-05 stsp 
214 e0159033 2019-01-08 stsp 	/* Order children in subdirectories directly after their parents. */
215 e0159033 2019-01-08 stsp 	if (path1[i] == '/' && path2[i] == '\0')
216 e0159033 2019-01-08 stsp 		return 1;
217 e0159033 2019-01-08 stsp 	if (path2[i] == '/' && path1[i] == '\0')
218 e0159033 2019-01-08 stsp 		return -1;
219 e08cc72d 2019-02-05 stsp 	if (path1[i] == '/' && path2[i] != '\0')
220 e0159033 2019-01-08 stsp 		return -1;
221 e08cc72d 2019-02-05 stsp 	if (path2[i] == '/' && path1[i] != '\0')
222 e0159033 2019-01-08 stsp 		return 1;
223 e0159033 2019-01-08 stsp 
224 e0159033 2019-01-08 stsp 	/* Next character following the common prefix determines order. */
225 e0159033 2019-01-08 stsp 	return (unsigned char)path1[i] < (unsigned char)path2[i] ? -1 : 1;
226 e0159033 2019-01-08 stsp }
227 e08cc72d 2019-02-05 stsp 
228 e08cc72d 2019-02-05 stsp const struct got_error *
229 7e5c804b 2019-02-05 stsp got_pathlist_insert(struct got_pathlist_entry **inserted,
230 3d8df59c 2019-02-05 stsp     struct got_pathlist_head *pathlist, const char *path, void *data)
231 e08cc72d 2019-02-05 stsp {
232 e08cc72d 2019-02-05 stsp 	struct got_pathlist_entry *new, *pe;
233 7e5c804b 2019-02-05 stsp 
234 7e5c804b 2019-02-05 stsp 	if (inserted)
235 7e5c804b 2019-02-05 stsp 		*inserted = NULL;
236 e08cc72d 2019-02-05 stsp 
237 e08cc72d 2019-02-05 stsp 	new = malloc(sizeof(*new));
238 e08cc72d 2019-02-05 stsp 	if (new == NULL)
239 230a42bd 2019-05-11 jcs 		return got_error_prefix_errno("malloc");
240 e08cc72d 2019-02-05 stsp 	new->path = path;
241 3d8df59c 2019-02-05 stsp 	new->data = data;
242 e08cc72d 2019-02-05 stsp 
243 e08cc72d 2019-02-05 stsp 	/*
244 e08cc72d 2019-02-05 stsp 	 * Many callers will provide paths in a somewhat sorted order while
245 e08cc72d 2019-02-05 stsp 	 * constructing a path list from inputs such as tree objects or
246 e08cc72d 2019-02-05 stsp 	 * dirents. Iterating backwards from the tail of the list should
247 e08cc72d 2019-02-05 stsp 	 * be more efficient than traversing through the entire list each
248 e08cc72d 2019-02-05 stsp 	 * time an element is inserted.
249 e08cc72d 2019-02-05 stsp 	 */
250 e08cc72d 2019-02-05 stsp 	pe = TAILQ_LAST(pathlist, got_pathlist_head);
251 e08cc72d 2019-02-05 stsp 	while (pe) {
252 e08cc72d 2019-02-05 stsp 		int cmp = got_path_cmp(pe->path, path);
253 e08cc72d 2019-02-05 stsp 		if (cmp == 0) {
254 e08cc72d 2019-02-05 stsp 			free(new); /* duplicate */
255 e08cc72d 2019-02-05 stsp 			return NULL;
256 e08cc72d 2019-02-05 stsp 		} else if (cmp < 0) {
257 e08cc72d 2019-02-05 stsp 			TAILQ_INSERT_AFTER(pathlist, pe, new, entry);
258 7e5c804b 2019-02-05 stsp 			if (inserted)
259 7e5c804b 2019-02-05 stsp 				*inserted = new;
260 e08cc72d 2019-02-05 stsp 			return NULL;
261 e08cc72d 2019-02-05 stsp 		}
262 e08cc72d 2019-02-05 stsp 		pe = TAILQ_PREV(pe, got_pathlist_head, entry);
263 e08cc72d 2019-02-05 stsp 	}
264 e08cc72d 2019-02-05 stsp 
265 e08cc72d 2019-02-05 stsp 	TAILQ_INSERT_HEAD(pathlist, new, entry);
266 7e5c804b 2019-02-05 stsp 	if (inserted)
267 7e5c804b 2019-02-05 stsp 		*inserted = new;
268 e08cc72d 2019-02-05 stsp 	return NULL;
269 e08cc72d 2019-02-05 stsp }
270 e08cc72d 2019-02-05 stsp 
271 e08cc72d 2019-02-05 stsp void
272 e08cc72d 2019-02-05 stsp got_pathlist_free(struct got_pathlist_head *pathlist)
273 e08cc72d 2019-02-05 stsp {
274 e08cc72d 2019-02-05 stsp 	struct got_pathlist_entry *pe;
275 e08cc72d 2019-02-05 stsp 
276 e08cc72d 2019-02-05 stsp 	while ((pe = TAILQ_FIRST(pathlist)) != NULL) {
277 e08cc72d 2019-02-05 stsp 		TAILQ_REMOVE(pathlist, pe, entry);
278 e08cc72d 2019-02-05 stsp 		free(pe);
279 0cd1c46a 2019-03-11 stsp 	}
280 0cd1c46a 2019-03-11 stsp }
281 0cd1c46a 2019-03-11 stsp 
282 0cd1c46a 2019-03-11 stsp static const struct got_error *
283 0cd1c46a 2019-03-11 stsp make_parent_dirs(const char *abspath)
284 0cd1c46a 2019-03-11 stsp {
285 0cd1c46a 2019-03-11 stsp 	const struct got_error *err = NULL;
286 d1667f0d 2019-03-11 stsp 	char *parent;
287 0cd1c46a 2019-03-11 stsp 
288 d1667f0d 2019-03-11 stsp 	err = got_path_dirname(&parent, abspath);
289 d1667f0d 2019-03-11 stsp 	if (err)
290 d1667f0d 2019-03-11 stsp 		return err;
291 0cd1c46a 2019-03-11 stsp 
292 0cd1c46a 2019-03-11 stsp 	if (mkdir(parent, GOT_DEFAULT_DIR_MODE) == -1) {
293 0cd1c46a 2019-03-11 stsp 		if (errno == ENOENT) {
294 0cd1c46a 2019-03-11 stsp 			err = make_parent_dirs(parent);
295 0cd1c46a 2019-03-11 stsp 			if (err)
296 5e1c9f23 2019-03-11 stsp 				goto done;
297 5e1c9f23 2019-03-11 stsp 			if (mkdir(parent, GOT_DEFAULT_DIR_MODE) == -1) {
298 230a42bd 2019-05-11 jcs 				err = got_error_prefix_errno2("mkdir", parent);
299 5e1c9f23 2019-03-11 stsp 				goto done;
300 5e1c9f23 2019-03-11 stsp 			}
301 0cd1c46a 2019-03-11 stsp 		} else
302 230a42bd 2019-05-11 jcs 			err = got_error_prefix_errno2("mkdir", parent);
303 e08cc72d 2019-02-05 stsp 	}
304 5e1c9f23 2019-03-11 stsp done:
305 5e1c9f23 2019-03-11 stsp 	free(parent);
306 0cd1c46a 2019-03-11 stsp 	return err;
307 e08cc72d 2019-02-05 stsp }
308 0cd1c46a 2019-03-11 stsp 
309 0cd1c46a 2019-03-11 stsp const struct got_error *
310 0cd1c46a 2019-03-11 stsp got_path_mkdir(const char *abspath)
311 0cd1c46a 2019-03-11 stsp {
312 0cd1c46a 2019-03-11 stsp 	const struct got_error *err = NULL;
313 0cd1c46a 2019-03-11 stsp 
314 0cd1c46a 2019-03-11 stsp 	if (mkdir(abspath, GOT_DEFAULT_DIR_MODE) == -1) {
315 ddcd8544 2019-03-11 stsp 		if (errno == ENOENT) {
316 0cd1c46a 2019-03-11 stsp 			err = make_parent_dirs(abspath);
317 0cd1c46a 2019-03-11 stsp 			if (err)
318 0cd1c46a 2019-03-11 stsp 				goto done;
319 0cd1c46a 2019-03-11 stsp 			if (mkdir(abspath, GOT_DEFAULT_DIR_MODE) == -1)
320 230a42bd 2019-05-11 jcs 				err = got_error_prefix_errno2("mkdir", abspath);
321 0cd1c46a 2019-03-11 stsp 		} else
322 230a42bd 2019-05-11 jcs 			err = got_error_prefix_errno2("mkdir", abspath);
323 0cd1c46a 2019-03-11 stsp 	}
324 0cd1c46a 2019-03-11 stsp 
325 0cd1c46a 2019-03-11 stsp done:
326 0cd1c46a 2019-03-11 stsp 	return err;
327 3c45a30a 2019-05-12 jcs }
328 3c45a30a 2019-05-12 jcs 
329 3c45a30a 2019-05-12 jcs int
330 280f921b 2019-05-12 stsp got_path_dir_is_empty(const char *dir)
331 3c45a30a 2019-05-12 jcs {
332 3c45a30a 2019-05-12 jcs 	DIR *d;
333 3c45a30a 2019-05-12 jcs 	struct dirent *dent;
334 3c45a30a 2019-05-12 jcs 	int empty = 1;
335 3c45a30a 2019-05-12 jcs 
336 3c45a30a 2019-05-12 jcs 	d = opendir(dir);
337 3c45a30a 2019-05-12 jcs 	if (d == NULL)
338 3c45a30a 2019-05-12 jcs 		return 1;
339 3c45a30a 2019-05-12 jcs 
340 3c45a30a 2019-05-12 jcs 	while ((dent = readdir(d)) != NULL) {
341 3c45a30a 2019-05-12 jcs 		if (strcmp(dent->d_name, ".") == 0 ||
342 3c45a30a 2019-05-12 jcs 		    strcmp(dent->d_name, "..") == 0)
343 3c45a30a 2019-05-12 jcs 			continue;
344 3c45a30a 2019-05-12 jcs 
345 3c45a30a 2019-05-12 jcs 		empty = 0;
346 3c45a30a 2019-05-12 jcs 		break;
347 3c45a30a 2019-05-12 jcs 	}
348 3c45a30a 2019-05-12 jcs 
349 7f2a8dc2 2019-05-12 stsp 	closedir(d);
350 3c45a30a 2019-05-12 jcs 	return empty;
351 d1667f0d 2019-03-11 stsp }
352 d1667f0d 2019-03-11 stsp 
353 d1667f0d 2019-03-11 stsp const struct got_error *
354 d1667f0d 2019-03-11 stsp got_path_dirname(char **parent, const char *path)
355 d1667f0d 2019-03-11 stsp {
356 d1667f0d 2019-03-11 stsp 	char *p;
357 d1667f0d 2019-03-11 stsp 
358 d1667f0d 2019-03-11 stsp 	p = dirname(path);
359 d1667f0d 2019-03-11 stsp 	if (p == NULL)
360 230a42bd 2019-05-11 jcs 		return got_error_prefix_errno2("dirname", path);
361 d1667f0d 2019-03-11 stsp 
362 d1667f0d 2019-03-11 stsp 	if (p[0] == '.' && p[1] == '\0')
363 d1667f0d 2019-03-11 stsp 		return got_error(GOT_ERR_BAD_PATH);
364 d1667f0d 2019-03-11 stsp 
365 d1667f0d 2019-03-11 stsp 	*parent = strdup(p);
366 d1667f0d 2019-03-11 stsp 	if (*parent == NULL)
367 230a42bd 2019-05-11 jcs 		return got_error_prefix_errno("strdup");
368 d1667f0d 2019-03-11 stsp 
369 d1667f0d 2019-03-11 stsp 	return NULL;
370 0cd1c46a 2019-03-11 stsp }
371 72151b04 2019-05-11 stsp 
372 72151b04 2019-05-11 stsp void
373 72151b04 2019-05-11 stsp got_path_strip_trailing_slashes(char *path)
374 72151b04 2019-05-11 stsp {
375 72151b04 2019-05-11 stsp 	int x;
376 72151b04 2019-05-11 stsp 
377 72151b04 2019-05-11 stsp 	while (path[x = strlen(path) - 1] == '/')
378 72151b04 2019-05-11 stsp 		path[x] = '\0';
379 72151b04 2019-05-11 stsp }