1 3efd8e31 2022-10-23 thomas /*
  2 3efd8e31 2022-10-23 thomas  * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
  3 3efd8e31 2022-10-23 thomas  *
  4 3efd8e31 2022-10-23 thomas  * Permission to use, copy, modify, and distribute this software for any
  5 3efd8e31 2022-10-23 thomas  * purpose with or without fee is hereby granted, provided that the above
  6 3efd8e31 2022-10-23 thomas  * copyright notice and this permission notice appear in all copies.
  7 3efd8e31 2022-10-23 thomas  *
  8 3efd8e31 2022-10-23 thomas  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 3efd8e31 2022-10-23 thomas  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 3efd8e31 2022-10-23 thomas  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 3efd8e31 2022-10-23 thomas  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 3efd8e31 2022-10-23 thomas  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 3efd8e31 2022-10-23 thomas  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 3efd8e31 2022-10-23 thomas  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 3efd8e31 2022-10-23 thomas  */
 16 4efc8dcb 2023-08-29 thomas 
 17 4efc8dcb 2023-08-29 thomas #include "got_compat.h"
 18 3efd8e31 2022-10-23 thomas 
 19 3efd8e31 2022-10-23 thomas #include <sys/queue.h>
 20 3efd8e31 2022-10-23 thomas 
 21 3efd8e31 2022-10-23 thomas #include <errno.h>
 22 3efd8e31 2022-10-23 thomas #include <event.h>
 23 3efd8e31 2022-10-23 thomas #include <fcntl.h>
 24 3efd8e31 2022-10-23 thomas #include <imsg.h>
 25 3efd8e31 2022-10-23 thomas #include <stdio.h>
 26 3efd8e31 2022-10-23 thomas #include <stdlib.h>
 27 3efd8e31 2022-10-23 thomas #include <string.h>
 28 3efd8e31 2022-10-23 thomas #include <limits.h>
 29 3efd8e31 2022-10-23 thomas #include <unistd.h>
 30 3efd8e31 2022-10-23 thomas 
 31 3efd8e31 2022-10-23 thomas #include "got_error.h"
 32 3efd8e31 2022-10-23 thomas #include "got_object.h"
 33 3efd8e31 2022-10-23 thomas #include "got_repository.h"
 34 3efd8e31 2022-10-23 thomas #include "got_path.h"
 35 3efd8e31 2022-10-23 thomas 
 36 3efd8e31 2022-10-23 thomas #include "got_lib_gitconfig.h"
 37 3efd8e31 2022-10-23 thomas #include "got_lib_delta.h"
 38 3efd8e31 2022-10-23 thomas #include "got_lib_object.h"
 39 3efd8e31 2022-10-23 thomas #include "got_lib_object_cache.h"
 40 3efd8e31 2022-10-23 thomas #include "got_lib_privsep.h"
 41 3efd8e31 2022-10-23 thomas #include "got_lib_pack.h"
 42 3efd8e31 2022-10-23 thomas #include "got_lib_repository.h"
 43 3efd8e31 2022-10-23 thomas 
 44 3efd8e31 2022-10-23 thomas static int
 45 3efd8e31 2022-10-23 thomas get_boolean_val(char *val)
 46 3efd8e31 2022-10-23 thomas {
 47 3efd8e31 2022-10-23 thomas     return (strcasecmp(val, "true") == 0 ||
 48 3efd8e31 2022-10-23 thomas 	strcasecmp(val, "on") == 0 ||
 49 3efd8e31 2022-10-23 thomas 	strcasecmp(val, "yes") == 0 ||
 50 3efd8e31 2022-10-23 thomas 	strcmp(val, "1") == 0);
 51 3efd8e31 2022-10-23 thomas }
 52 3efd8e31 2022-10-23 thomas 
 53 99e30d93 2024-01-31 thomas static int
 54 99e30d93 2024-01-31 thomas skip_node(struct got_gitconfig *gitconfig,
 55 99e30d93 2024-01-31 thomas     struct got_gitconfig_list_node *node)
 56 99e30d93 2024-01-31 thomas {
 57 99e30d93 2024-01-31 thomas 	/*
 58 99e30d93 2024-01-31 thomas 	 * Skip config nodes which do not describe remotes, and remotes
 59 99e30d93 2024-01-31 thomas 	 * which do not have a fetch URL defined (as used by git-annex).
 60 99e30d93 2024-01-31 thomas 	 */
 61 99e30d93 2024-01-31 thomas 	return (strncasecmp("remote \"", node->field, 8) != 0 ||
 62 99e30d93 2024-01-31 thomas 	    got_gitconfig_get_str(gitconfig, node->field, "url") == NULL);
 63 99e30d93 2024-01-31 thomas }
 64 99e30d93 2024-01-31 thomas 
 65 3efd8e31 2022-10-23 thomas const struct got_error *
 66 3efd8e31 2022-10-23 thomas got_repo_read_gitconfig(int *gitconfig_repository_format_version,
 67 3efd8e31 2022-10-23 thomas     char **gitconfig_author_name, char **gitconfig_author_email,
 68 3efd8e31 2022-10-23 thomas     struct got_remote_repo **remotes, int *nremotes,
 69 01a217a7 2023-02-07 thomas     char **gitconfig_owner, char ***extnames, char ***extvals,
 70 01a217a7 2023-02-07 thomas     int *nextensions, const char *gitconfig_path)
 71 3efd8e31 2022-10-23 thomas {
 72 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
 73 3efd8e31 2022-10-23 thomas 	struct got_gitconfig *gitconfig = NULL;
 74 3efd8e31 2022-10-23 thomas 	struct got_gitconfig_list *tags;
 75 3efd8e31 2022-10-23 thomas 	struct got_gitconfig_list_node *node;
 76 3efd8e31 2022-10-23 thomas 	int fd, i;
 77 3efd8e31 2022-10-23 thomas 	const char *author, *email, *owner;
 78 3efd8e31 2022-10-23 thomas 
 79 3efd8e31 2022-10-23 thomas 	*gitconfig_repository_format_version = 0;
 80 01a217a7 2023-02-07 thomas 	if (extnames)
 81 01a217a7 2023-02-07 thomas 		*extnames = NULL;
 82 01a217a7 2023-02-07 thomas 	if (extvals)
 83 01a217a7 2023-02-07 thomas 		*extvals = NULL;
 84 3efd8e31 2022-10-23 thomas 	if (nextensions)
 85 3efd8e31 2022-10-23 thomas 		*nextensions = 0;
 86 3efd8e31 2022-10-23 thomas 	*gitconfig_author_name = NULL;
 87 3efd8e31 2022-10-23 thomas 	*gitconfig_author_email = NULL;
 88 3efd8e31 2022-10-23 thomas 	if (remotes)
 89 3efd8e31 2022-10-23 thomas 		*remotes = NULL;
 90 3efd8e31 2022-10-23 thomas 	if (nremotes)
 91 3efd8e31 2022-10-23 thomas 		*nremotes = 0;
 92 3efd8e31 2022-10-23 thomas 	if (gitconfig_owner)
 93 3efd8e31 2022-10-23 thomas 		*gitconfig_owner = NULL;
 94 3efd8e31 2022-10-23 thomas 
 95 3efd8e31 2022-10-23 thomas 	fd = open(gitconfig_path, O_RDONLY | O_CLOEXEC);
 96 3efd8e31 2022-10-23 thomas 	if (fd == -1) {
 97 3efd8e31 2022-10-23 thomas 		if (errno == ENOENT)
 98 3efd8e31 2022-10-23 thomas 			return NULL;
 99 3efd8e31 2022-10-23 thomas 		return got_error_from_errno2("open", gitconfig_path);
100 3efd8e31 2022-10-23 thomas 	}
101 3efd8e31 2022-10-23 thomas 
102 3efd8e31 2022-10-23 thomas 	err = got_gitconfig_open(&gitconfig, fd);
103 3efd8e31 2022-10-23 thomas 	if (err)
104 3efd8e31 2022-10-23 thomas 		goto done;
105 3efd8e31 2022-10-23 thomas 
106 3efd8e31 2022-10-23 thomas 	*gitconfig_repository_format_version = got_gitconfig_get_num(gitconfig,
107 3efd8e31 2022-10-23 thomas 	    "core", "repositoryformatversion", 0);
108 3efd8e31 2022-10-23 thomas 
109 3efd8e31 2022-10-23 thomas 	tags = got_gitconfig_get_tag_list(gitconfig, "extensions");
110 01a217a7 2023-02-07 thomas 	if (extnames && extvals && nextensions && tags) {
111 3efd8e31 2022-10-23 thomas 		size_t numext = 0;
112 3efd8e31 2022-10-23 thomas 		TAILQ_FOREACH(node, &tags->fields, link) {
113 3efd8e31 2022-10-23 thomas 			char *ext = node->field;
114 3efd8e31 2022-10-23 thomas 			char *val = got_gitconfig_get_str(gitconfig,
115 3efd8e31 2022-10-23 thomas 			    "extensions", ext);
116 3efd8e31 2022-10-23 thomas 			if (get_boolean_val(val))
117 3efd8e31 2022-10-23 thomas 				numext++;
118 3efd8e31 2022-10-23 thomas 		}
119 01a217a7 2023-02-07 thomas 		*extnames = calloc(numext, sizeof(char *));
120 01a217a7 2023-02-07 thomas 		if (*extnames == NULL) {
121 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("calloc");
122 3efd8e31 2022-10-23 thomas 			goto done;
123 3efd8e31 2022-10-23 thomas 		}
124 01a217a7 2023-02-07 thomas 		*extvals = calloc(numext, sizeof(char *));
125 01a217a7 2023-02-07 thomas 		if (*extvals == NULL) {
126 01a217a7 2023-02-07 thomas 			err = got_error_from_errno("calloc");
127 01a217a7 2023-02-07 thomas 			goto done;
128 01a217a7 2023-02-07 thomas 		}
129 3efd8e31 2022-10-23 thomas 		TAILQ_FOREACH(node, &tags->fields, link) {
130 3efd8e31 2022-10-23 thomas 			char *ext = node->field;
131 3efd8e31 2022-10-23 thomas 			char *val = got_gitconfig_get_str(gitconfig,
132 3efd8e31 2022-10-23 thomas 			    "extensions", ext);
133 3efd8e31 2022-10-23 thomas 			if (get_boolean_val(val)) {
134 01a217a7 2023-02-07 thomas 				char *extstr = NULL, *valstr = NULL;
135 01a217a7 2023-02-07 thomas 
136 01a217a7 2023-02-07 thomas 				extstr = strdup(ext);
137 3efd8e31 2022-10-23 thomas 				if (extstr == NULL) {
138 3efd8e31 2022-10-23 thomas 					err = got_error_from_errno("strdup");
139 3efd8e31 2022-10-23 thomas 					goto done;
140 3efd8e31 2022-10-23 thomas 				}
141 01a217a7 2023-02-07 thomas 				valstr = strdup(val);
142 01a217a7 2023-02-07 thomas 				if (valstr == NULL) {
143 01a217a7 2023-02-07 thomas 					err = got_error_from_errno("strdup");
144 01a217a7 2023-02-07 thomas 					goto done;
145 01a217a7 2023-02-07 thomas 				}
146 01a217a7 2023-02-07 thomas 				(*extnames)[(*nextensions)] = extstr;
147 01a217a7 2023-02-07 thomas 				(*extvals)[(*nextensions)] = valstr;
148 3efd8e31 2022-10-23 thomas 				(*nextensions)++;
149 3efd8e31 2022-10-23 thomas 			}
150 3efd8e31 2022-10-23 thomas 		}
151 3efd8e31 2022-10-23 thomas 	}
152 3efd8e31 2022-10-23 thomas 
153 3efd8e31 2022-10-23 thomas 	author = got_gitconfig_get_str(gitconfig, "user", "name");
154 3efd8e31 2022-10-23 thomas 	if (author) {
155 3efd8e31 2022-10-23 thomas 		*gitconfig_author_name = strdup(author);
156 3efd8e31 2022-10-23 thomas 		if (*gitconfig_author_name == NULL) {
157 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("strdup");
158 3efd8e31 2022-10-23 thomas 			goto done;
159 3efd8e31 2022-10-23 thomas 		}
160 3efd8e31 2022-10-23 thomas 	}
161 3efd8e31 2022-10-23 thomas 
162 3efd8e31 2022-10-23 thomas 	email = got_gitconfig_get_str(gitconfig, "user", "email");
163 3efd8e31 2022-10-23 thomas 	if (email) {
164 3efd8e31 2022-10-23 thomas 		*gitconfig_author_email = strdup(email);
165 3efd8e31 2022-10-23 thomas 		if (*gitconfig_author_email == NULL) {
166 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("strdup");
167 3efd8e31 2022-10-23 thomas 			goto done;
168 3efd8e31 2022-10-23 thomas 		}
169 3efd8e31 2022-10-23 thomas 	}
170 3efd8e31 2022-10-23 thomas 
171 3efd8e31 2022-10-23 thomas 	if (gitconfig_owner) {
172 3efd8e31 2022-10-23 thomas 		owner = got_gitconfig_get_str(gitconfig, "gotweb", "owner");
173 3efd8e31 2022-10-23 thomas 		if (owner == NULL)
174 3efd8e31 2022-10-23 thomas 			owner = got_gitconfig_get_str(gitconfig, "gitweb",
175 3efd8e31 2022-10-23 thomas 			    "owner");
176 3efd8e31 2022-10-23 thomas 		if (owner) {
177 3efd8e31 2022-10-23 thomas 			*gitconfig_owner = strdup(owner);
178 3efd8e31 2022-10-23 thomas 			if (*gitconfig_owner == NULL) {
179 3efd8e31 2022-10-23 thomas 				err = got_error_from_errno("strdup");
180 3efd8e31 2022-10-23 thomas 				goto done;
181 3efd8e31 2022-10-23 thomas 			}
182 3efd8e31 2022-10-23 thomas 
183 3efd8e31 2022-10-23 thomas 		}
184 3efd8e31 2022-10-23 thomas 	}
185 3efd8e31 2022-10-23 thomas 
186 3efd8e31 2022-10-23 thomas 	if (remotes && nremotes) {
187 3efd8e31 2022-10-23 thomas 		struct got_gitconfig_list *sections;
188 3efd8e31 2022-10-23 thomas 		size_t nalloc = 0;
189 3efd8e31 2022-10-23 thomas 		err = got_gitconfig_get_section_list(&sections, gitconfig);
190 3efd8e31 2022-10-23 thomas 		if (err)
191 3efd8e31 2022-10-23 thomas 			return err;
192 3efd8e31 2022-10-23 thomas 		TAILQ_FOREACH(node, &sections->fields, link) {
193 99e30d93 2024-01-31 thomas 			if (skip_node(gitconfig, node))
194 3efd8e31 2022-10-23 thomas 				continue;
195 3efd8e31 2022-10-23 thomas 			nalloc++;
196 3efd8e31 2022-10-23 thomas 		}
197 3efd8e31 2022-10-23 thomas 
198 3efd8e31 2022-10-23 thomas 		*remotes = recallocarray(NULL, 0, nalloc, sizeof(**remotes));
199 3efd8e31 2022-10-23 thomas 		if (*remotes == NULL) {
200 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("recallocarray");
201 3efd8e31 2022-10-23 thomas 			goto done;
202 3efd8e31 2022-10-23 thomas 		}
203 3efd8e31 2022-10-23 thomas 
204 3efd8e31 2022-10-23 thomas 		i = 0;
205 3efd8e31 2022-10-23 thomas 		TAILQ_FOREACH(node, &sections->fields, link) {
206 3efd8e31 2022-10-23 thomas 			struct got_remote_repo *remote;
207 3efd8e31 2022-10-23 thomas 			char *name, *end, *mirror;
208 3efd8e31 2022-10-23 thomas 			const char *fetch_url, *send_url;
209 3efd8e31 2022-10-23 thomas 
210 99e30d93 2024-01-31 thomas 			if (skip_node(gitconfig, node) != 0)
211 3efd8e31 2022-10-23 thomas 				continue;
212 3efd8e31 2022-10-23 thomas 
213 3efd8e31 2022-10-23 thomas 			remote = &(*remotes)[i];
214 3efd8e31 2022-10-23 thomas 
215 3efd8e31 2022-10-23 thomas 			name = strdup(node->field + 8);
216 3efd8e31 2022-10-23 thomas 			if (name == NULL) {
217 3efd8e31 2022-10-23 thomas 				err = got_error_from_errno("strdup");
218 3efd8e31 2022-10-23 thomas 				goto done;
219 3efd8e31 2022-10-23 thomas 			}
220 3efd8e31 2022-10-23 thomas 			end = strrchr(name, '"');
221 3efd8e31 2022-10-23 thomas 			if (end)
222 3efd8e31 2022-10-23 thomas 				*end = '\0';
223 3efd8e31 2022-10-23 thomas 			remote->name = name;
224 3efd8e31 2022-10-23 thomas 
225 3efd8e31 2022-10-23 thomas 			fetch_url = got_gitconfig_get_str(gitconfig,
226 3efd8e31 2022-10-23 thomas 			    node->field, "url");
227 3efd8e31 2022-10-23 thomas 			remote->fetch_url = strdup(fetch_url);
228 3efd8e31 2022-10-23 thomas 			if (remote->fetch_url == NULL) {
229 3efd8e31 2022-10-23 thomas 				err = got_error_from_errno("strdup");
230 3efd8e31 2022-10-23 thomas 				free(remote->name);
231 3efd8e31 2022-10-23 thomas 				remote->name = NULL;
232 3efd8e31 2022-10-23 thomas 				goto done;
233 3efd8e31 2022-10-23 thomas 			}
234 3efd8e31 2022-10-23 thomas 
235 3efd8e31 2022-10-23 thomas 			send_url = got_gitconfig_get_str(gitconfig,
236 3efd8e31 2022-10-23 thomas 			    node->field, "pushurl");
237 3efd8e31 2022-10-23 thomas 			if (send_url == NULL)
238 3efd8e31 2022-10-23 thomas 				send_url = got_gitconfig_get_str(gitconfig,
239 3efd8e31 2022-10-23 thomas 				    node->field, "url");
240 3efd8e31 2022-10-23 thomas 			remote->send_url = strdup(send_url);
241 3efd8e31 2022-10-23 thomas 			if (remote->send_url == NULL) {
242 3efd8e31 2022-10-23 thomas 				err = got_error_from_errno("strdup");
243 3efd8e31 2022-10-23 thomas 				free(remote->name);
244 3efd8e31 2022-10-23 thomas 				remote->name = NULL;
245 3efd8e31 2022-10-23 thomas 				free(remote->fetch_url);
246 3efd8e31 2022-10-23 thomas 				remote->fetch_url = NULL;
247 3efd8e31 2022-10-23 thomas 				goto done;
248 3efd8e31 2022-10-23 thomas 			}
249 3efd8e31 2022-10-23 thomas 
250 3efd8e31 2022-10-23 thomas 			remote->mirror_references = 0;
251 3efd8e31 2022-10-23 thomas 			mirror = got_gitconfig_get_str(gitconfig, node->field,
252 3efd8e31 2022-10-23 thomas 			    "mirror");
253 3efd8e31 2022-10-23 thomas 			if (mirror != NULL && get_boolean_val(mirror))
254 3efd8e31 2022-10-23 thomas 				remote->mirror_references = 1;
255 3efd8e31 2022-10-23 thomas 
256 3efd8e31 2022-10-23 thomas 			i++;
257 3efd8e31 2022-10-23 thomas 			(*nremotes)++;
258 3efd8e31 2022-10-23 thomas 		}
259 3efd8e31 2022-10-23 thomas 	}
260 3efd8e31 2022-10-23 thomas done:
261 3efd8e31 2022-10-23 thomas 	if (fd != -1)
262 3efd8e31 2022-10-23 thomas 		close(fd);
263 3efd8e31 2022-10-23 thomas 	if (gitconfig)
264 3efd8e31 2022-10-23 thomas 		got_gitconfig_close(gitconfig);
265 3efd8e31 2022-10-23 thomas 	if (err) {
266 01a217a7 2023-02-07 thomas 		if (extnames && extvals && nextensions) {
267 01a217a7 2023-02-07 thomas 			for (i = 0; i < (*nextensions); i++) {
268 01a217a7 2023-02-07 thomas 				free((*extnames)[i]);
269 01a217a7 2023-02-07 thomas 				free((*extvals)[i]);
270 01a217a7 2023-02-07 thomas 			}
271 01a217a7 2023-02-07 thomas 			free(*extnames);
272 01a217a7 2023-02-07 thomas 			*extnames = NULL;
273 01a217a7 2023-02-07 thomas 			free(*extvals);
274 01a217a7 2023-02-07 thomas 			*extvals = NULL;
275 3efd8e31 2022-10-23 thomas 			*nextensions = 0;
276 3efd8e31 2022-10-23 thomas 		}
277 3efd8e31 2022-10-23 thomas 		if (remotes && nremotes) {
278 3efd8e31 2022-10-23 thomas 			for (i = 0; i < (*nremotes); i++) {
279 3efd8e31 2022-10-23 thomas 				struct got_remote_repo *remote;
280 3efd8e31 2022-10-23 thomas 				remote = &(*remotes)[i];
281 3efd8e31 2022-10-23 thomas 				free(remote->name);
282 3efd8e31 2022-10-23 thomas 				free(remote->fetch_url);
283 3efd8e31 2022-10-23 thomas 				free(remote->send_url);
284 3efd8e31 2022-10-23 thomas 			}
285 3efd8e31 2022-10-23 thomas 			free(*remotes);
286 3efd8e31 2022-10-23 thomas 			*remotes = NULL;
287 3efd8e31 2022-10-23 thomas 			*nremotes = 0;
288 3efd8e31 2022-10-23 thomas 		}
289 3efd8e31 2022-10-23 thomas 	}
290 3efd8e31 2022-10-23 thomas 	return err;
291 3efd8e31 2022-10-23 thomas }