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 3efd8e31 2022-10-23 thomas 
 17 3efd8e31 2022-10-23 thomas #include <sys/queue.h>
 18 3efd8e31 2022-10-23 thomas 
 19 3efd8e31 2022-10-23 thomas #include <errno.h>
 20 3efd8e31 2022-10-23 thomas #include <event.h>
 21 3efd8e31 2022-10-23 thomas #include <fcntl.h>
 22 3efd8e31 2022-10-23 thomas #include <imsg.h>
 23 588a8092 2023-02-23 thomas #include <sha2.h>
 24 3efd8e31 2022-10-23 thomas #include <stdio.h>
 25 3efd8e31 2022-10-23 thomas #include <stdlib.h>
 26 3efd8e31 2022-10-23 thomas #include <string.h>
 27 3efd8e31 2022-10-23 thomas #include <limits.h>
 28 3efd8e31 2022-10-23 thomas #include <unistd.h>
 29 3efd8e31 2022-10-23 thomas 
 30 3efd8e31 2022-10-23 thomas #include "got_error.h"
 31 3efd8e31 2022-10-23 thomas #include "got_object.h"
 32 3efd8e31 2022-10-23 thomas #include "got_repository.h"
 33 3efd8e31 2022-10-23 thomas #include "got_path.h"
 34 3efd8e31 2022-10-23 thomas 
 35 3efd8e31 2022-10-23 thomas #include "got_lib_gitconfig.h"
 36 3efd8e31 2022-10-23 thomas #include "got_lib_delta.h"
 37 3efd8e31 2022-10-23 thomas #include "got_lib_object.h"
 38 3efd8e31 2022-10-23 thomas #include "got_lib_object_cache.h"
 39 3efd8e31 2022-10-23 thomas #include "got_lib_privsep.h"
 40 3efd8e31 2022-10-23 thomas #include "got_lib_pack.h"
 41 3efd8e31 2022-10-23 thomas #include "got_lib_repository.h"
 42 3efd8e31 2022-10-23 thomas 
 43 3efd8e31 2022-10-23 thomas static int
 44 3efd8e31 2022-10-23 thomas get_boolean_val(char *val)
 45 3efd8e31 2022-10-23 thomas {
 46 3efd8e31 2022-10-23 thomas     return (strcasecmp(val, "true") == 0 ||
 47 3efd8e31 2022-10-23 thomas 	strcasecmp(val, "on") == 0 ||
 48 3efd8e31 2022-10-23 thomas 	strcasecmp(val, "yes") == 0 ||
 49 3efd8e31 2022-10-23 thomas 	strcmp(val, "1") == 0);
 50 3efd8e31 2022-10-23 thomas }
 51 3efd8e31 2022-10-23 thomas 
 52 3efd8e31 2022-10-23 thomas const struct got_error *
 53 3efd8e31 2022-10-23 thomas got_repo_read_gitconfig(int *gitconfig_repository_format_version,
 54 3efd8e31 2022-10-23 thomas     char **gitconfig_author_name, char **gitconfig_author_email,
 55 3efd8e31 2022-10-23 thomas     struct got_remote_repo **remotes, int *nremotes,
 56 01a217a7 2023-02-07 thomas     char **gitconfig_owner, char ***extnames, char ***extvals,
 57 01a217a7 2023-02-07 thomas     int *nextensions, const char *gitconfig_path)
 58 3efd8e31 2022-10-23 thomas {
 59 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
 60 3efd8e31 2022-10-23 thomas 	struct got_gitconfig *gitconfig = NULL;
 61 3efd8e31 2022-10-23 thomas 	struct got_gitconfig_list *tags;
 62 3efd8e31 2022-10-23 thomas 	struct got_gitconfig_list_node *node;
 63 3efd8e31 2022-10-23 thomas 	int fd, i;
 64 3efd8e31 2022-10-23 thomas 	const char *author, *email, *owner;
 65 3efd8e31 2022-10-23 thomas 
 66 3efd8e31 2022-10-23 thomas 	*gitconfig_repository_format_version = 0;
 67 01a217a7 2023-02-07 thomas 	if (extnames)
 68 01a217a7 2023-02-07 thomas 		*extnames = NULL;
 69 01a217a7 2023-02-07 thomas 	if (extvals)
 70 01a217a7 2023-02-07 thomas 		*extvals = NULL;
 71 3efd8e31 2022-10-23 thomas 	if (nextensions)
 72 3efd8e31 2022-10-23 thomas 		*nextensions = 0;
 73 3efd8e31 2022-10-23 thomas 	*gitconfig_author_name = NULL;
 74 3efd8e31 2022-10-23 thomas 	*gitconfig_author_email = NULL;
 75 3efd8e31 2022-10-23 thomas 	if (remotes)
 76 3efd8e31 2022-10-23 thomas 		*remotes = NULL;
 77 3efd8e31 2022-10-23 thomas 	if (nremotes)
 78 3efd8e31 2022-10-23 thomas 		*nremotes = 0;
 79 3efd8e31 2022-10-23 thomas 	if (gitconfig_owner)
 80 3efd8e31 2022-10-23 thomas 		*gitconfig_owner = NULL;
 81 3efd8e31 2022-10-23 thomas 
 82 3efd8e31 2022-10-23 thomas 	fd = open(gitconfig_path, O_RDONLY | O_CLOEXEC);
 83 3efd8e31 2022-10-23 thomas 	if (fd == -1) {
 84 3efd8e31 2022-10-23 thomas 		if (errno == ENOENT)
 85 3efd8e31 2022-10-23 thomas 			return NULL;
 86 3efd8e31 2022-10-23 thomas 		return got_error_from_errno2("open", gitconfig_path);
 87 3efd8e31 2022-10-23 thomas 	}
 88 3efd8e31 2022-10-23 thomas 
 89 3efd8e31 2022-10-23 thomas 	err = got_gitconfig_open(&gitconfig, fd);
 90 3efd8e31 2022-10-23 thomas 	if (err)
 91 3efd8e31 2022-10-23 thomas 		goto done;
 92 3efd8e31 2022-10-23 thomas 
 93 3efd8e31 2022-10-23 thomas 	*gitconfig_repository_format_version = got_gitconfig_get_num(gitconfig,
 94 3efd8e31 2022-10-23 thomas 	    "core", "repositoryformatversion", 0);
 95 3efd8e31 2022-10-23 thomas 
 96 3efd8e31 2022-10-23 thomas 	tags = got_gitconfig_get_tag_list(gitconfig, "extensions");
 97 01a217a7 2023-02-07 thomas 	if (extnames && extvals && nextensions && tags) {
 98 3efd8e31 2022-10-23 thomas 		size_t numext = 0;
 99 3efd8e31 2022-10-23 thomas 		TAILQ_FOREACH(node, &tags->fields, link) {
100 3efd8e31 2022-10-23 thomas 			char *ext = node->field;
101 3efd8e31 2022-10-23 thomas 			char *val = got_gitconfig_get_str(gitconfig,
102 3efd8e31 2022-10-23 thomas 			    "extensions", ext);
103 3efd8e31 2022-10-23 thomas 			if (get_boolean_val(val))
104 3efd8e31 2022-10-23 thomas 				numext++;
105 3efd8e31 2022-10-23 thomas 		}
106 01a217a7 2023-02-07 thomas 		*extnames = calloc(numext, sizeof(char *));
107 01a217a7 2023-02-07 thomas 		if (*extnames == NULL) {
108 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("calloc");
109 3efd8e31 2022-10-23 thomas 			goto done;
110 3efd8e31 2022-10-23 thomas 		}
111 01a217a7 2023-02-07 thomas 		*extvals = calloc(numext, sizeof(char *));
112 01a217a7 2023-02-07 thomas 		if (*extvals == NULL) {
113 01a217a7 2023-02-07 thomas 			err = got_error_from_errno("calloc");
114 01a217a7 2023-02-07 thomas 			goto done;
115 01a217a7 2023-02-07 thomas 		}
116 3efd8e31 2022-10-23 thomas 		TAILQ_FOREACH(node, &tags->fields, link) {
117 3efd8e31 2022-10-23 thomas 			char *ext = node->field;
118 3efd8e31 2022-10-23 thomas 			char *val = got_gitconfig_get_str(gitconfig,
119 3efd8e31 2022-10-23 thomas 			    "extensions", ext);
120 3efd8e31 2022-10-23 thomas 			if (get_boolean_val(val)) {
121 01a217a7 2023-02-07 thomas 				char *extstr = NULL, *valstr = NULL;
122 01a217a7 2023-02-07 thomas 
123 01a217a7 2023-02-07 thomas 				extstr = strdup(ext);
124 3efd8e31 2022-10-23 thomas 				if (extstr == NULL) {
125 3efd8e31 2022-10-23 thomas 					err = got_error_from_errno("strdup");
126 3efd8e31 2022-10-23 thomas 					goto done;
127 3efd8e31 2022-10-23 thomas 				}
128 01a217a7 2023-02-07 thomas 				valstr = strdup(val);
129 01a217a7 2023-02-07 thomas 				if (valstr == NULL) {
130 01a217a7 2023-02-07 thomas 					err = got_error_from_errno("strdup");
131 01a217a7 2023-02-07 thomas 					goto done;
132 01a217a7 2023-02-07 thomas 				}
133 01a217a7 2023-02-07 thomas 				(*extnames)[(*nextensions)] = extstr;
134 01a217a7 2023-02-07 thomas 				(*extvals)[(*nextensions)] = valstr;
135 3efd8e31 2022-10-23 thomas 				(*nextensions)++;
136 3efd8e31 2022-10-23 thomas 			}
137 3efd8e31 2022-10-23 thomas 		}
138 3efd8e31 2022-10-23 thomas 	}
139 3efd8e31 2022-10-23 thomas 
140 3efd8e31 2022-10-23 thomas 	author = got_gitconfig_get_str(gitconfig, "user", "name");
141 3efd8e31 2022-10-23 thomas 	if (author) {
142 3efd8e31 2022-10-23 thomas 		*gitconfig_author_name = strdup(author);
143 3efd8e31 2022-10-23 thomas 		if (*gitconfig_author_name == NULL) {
144 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("strdup");
145 3efd8e31 2022-10-23 thomas 			goto done;
146 3efd8e31 2022-10-23 thomas 		}
147 3efd8e31 2022-10-23 thomas 	}
148 3efd8e31 2022-10-23 thomas 
149 3efd8e31 2022-10-23 thomas 	email = got_gitconfig_get_str(gitconfig, "user", "email");
150 3efd8e31 2022-10-23 thomas 	if (email) {
151 3efd8e31 2022-10-23 thomas 		*gitconfig_author_email = strdup(email);
152 3efd8e31 2022-10-23 thomas 		if (*gitconfig_author_email == NULL) {
153 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("strdup");
154 3efd8e31 2022-10-23 thomas 			goto done;
155 3efd8e31 2022-10-23 thomas 		}
156 3efd8e31 2022-10-23 thomas 	}
157 3efd8e31 2022-10-23 thomas 
158 3efd8e31 2022-10-23 thomas 	if (gitconfig_owner) {
159 3efd8e31 2022-10-23 thomas 		owner = got_gitconfig_get_str(gitconfig, "gotweb", "owner");
160 3efd8e31 2022-10-23 thomas 		if (owner == NULL)
161 3efd8e31 2022-10-23 thomas 			owner = got_gitconfig_get_str(gitconfig, "gitweb",
162 3efd8e31 2022-10-23 thomas 			    "owner");
163 3efd8e31 2022-10-23 thomas 		if (owner) {
164 3efd8e31 2022-10-23 thomas 			*gitconfig_owner = strdup(owner);
165 3efd8e31 2022-10-23 thomas 			if (*gitconfig_owner == 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 	}
172 3efd8e31 2022-10-23 thomas 
173 3efd8e31 2022-10-23 thomas 	if (remotes && nremotes) {
174 3efd8e31 2022-10-23 thomas 		struct got_gitconfig_list *sections;
175 3efd8e31 2022-10-23 thomas 		size_t nalloc = 0;
176 3efd8e31 2022-10-23 thomas 		err = got_gitconfig_get_section_list(&sections, gitconfig);
177 3efd8e31 2022-10-23 thomas 		if (err)
178 3efd8e31 2022-10-23 thomas 			return err;
179 3efd8e31 2022-10-23 thomas 		TAILQ_FOREACH(node, &sections->fields, link) {
180 3efd8e31 2022-10-23 thomas 			if (strncasecmp("remote \"", node->field, 8) != 0)
181 3efd8e31 2022-10-23 thomas 				continue;
182 3efd8e31 2022-10-23 thomas 			nalloc++;
183 3efd8e31 2022-10-23 thomas 		}
184 3efd8e31 2022-10-23 thomas 
185 3efd8e31 2022-10-23 thomas 		*remotes = recallocarray(NULL, 0, nalloc, sizeof(**remotes));
186 3efd8e31 2022-10-23 thomas 		if (*remotes == NULL) {
187 3efd8e31 2022-10-23 thomas 			err = got_error_from_errno("recallocarray");
188 3efd8e31 2022-10-23 thomas 			goto done;
189 3efd8e31 2022-10-23 thomas 		}
190 3efd8e31 2022-10-23 thomas 
191 3efd8e31 2022-10-23 thomas 		i = 0;
192 3efd8e31 2022-10-23 thomas 		TAILQ_FOREACH(node, &sections->fields, link) {
193 3efd8e31 2022-10-23 thomas 			struct got_remote_repo *remote;
194 3efd8e31 2022-10-23 thomas 			char *name, *end, *mirror;
195 3efd8e31 2022-10-23 thomas 			const char *fetch_url, *send_url;
196 3efd8e31 2022-10-23 thomas 
197 3efd8e31 2022-10-23 thomas 			if (strncasecmp("remote \"", node->field, 8) != 0)
198 3efd8e31 2022-10-23 thomas 				continue;
199 3efd8e31 2022-10-23 thomas 
200 3efd8e31 2022-10-23 thomas 			remote = &(*remotes)[i];
201 3efd8e31 2022-10-23 thomas 
202 3efd8e31 2022-10-23 thomas 			name = strdup(node->field + 8);
203 3efd8e31 2022-10-23 thomas 			if (name == NULL) {
204 3efd8e31 2022-10-23 thomas 				err = got_error_from_errno("strdup");
205 3efd8e31 2022-10-23 thomas 				goto done;
206 3efd8e31 2022-10-23 thomas 			}
207 3efd8e31 2022-10-23 thomas 			end = strrchr(name, '"');
208 3efd8e31 2022-10-23 thomas 			if (end)
209 3efd8e31 2022-10-23 thomas 				*end = '\0';
210 3efd8e31 2022-10-23 thomas 			remote->name = name;
211 3efd8e31 2022-10-23 thomas 
212 3efd8e31 2022-10-23 thomas 			fetch_url = got_gitconfig_get_str(gitconfig,
213 3efd8e31 2022-10-23 thomas 			    node->field, "url");
214 3efd8e31 2022-10-23 thomas 			if (fetch_url == NULL) {
215 3efd8e31 2022-10-23 thomas 				err = got_error(GOT_ERR_GITCONFIG_SYNTAX);
216 3efd8e31 2022-10-23 thomas 				free(remote->name);
217 3efd8e31 2022-10-23 thomas 				remote->name = NULL;
218 3efd8e31 2022-10-23 thomas 				goto done;
219 3efd8e31 2022-10-23 thomas 			}
220 3efd8e31 2022-10-23 thomas 			remote->fetch_url = strdup(fetch_url);
221 3efd8e31 2022-10-23 thomas 			if (remote->fetch_url == NULL) {
222 3efd8e31 2022-10-23 thomas 				err = got_error_from_errno("strdup");
223 3efd8e31 2022-10-23 thomas 				free(remote->name);
224 3efd8e31 2022-10-23 thomas 				remote->name = NULL;
225 3efd8e31 2022-10-23 thomas 				goto done;
226 3efd8e31 2022-10-23 thomas 			}
227 3efd8e31 2022-10-23 thomas 
228 3efd8e31 2022-10-23 thomas 			send_url = got_gitconfig_get_str(gitconfig,
229 3efd8e31 2022-10-23 thomas 			    node->field, "pushurl");
230 3efd8e31 2022-10-23 thomas 			if (send_url == NULL)
231 3efd8e31 2022-10-23 thomas 				send_url = got_gitconfig_get_str(gitconfig,
232 3efd8e31 2022-10-23 thomas 				    node->field, "url");
233 3efd8e31 2022-10-23 thomas 			if (send_url == NULL) {
234 3efd8e31 2022-10-23 thomas 				err = got_error(GOT_ERR_GITCONFIG_SYNTAX);
235 3efd8e31 2022-10-23 thomas 				free(remote->name);
236 3efd8e31 2022-10-23 thomas 				remote->name = NULL;
237 3efd8e31 2022-10-23 thomas 				free(remote->fetch_url);
238 3efd8e31 2022-10-23 thomas 				remote->fetch_url = NULL;
239 3efd8e31 2022-10-23 thomas 				goto done;
240 3efd8e31 2022-10-23 thomas 			}
241 3efd8e31 2022-10-23 thomas 			remote->send_url = strdup(send_url);
242 3efd8e31 2022-10-23 thomas 			if (remote->send_url == NULL) {
243 3efd8e31 2022-10-23 thomas 				err = got_error_from_errno("strdup");
244 3efd8e31 2022-10-23 thomas 				free(remote->name);
245 3efd8e31 2022-10-23 thomas 				remote->name = NULL;
246 3efd8e31 2022-10-23 thomas 				free(remote->fetch_url);
247 3efd8e31 2022-10-23 thomas 				remote->fetch_url = NULL;
248 3efd8e31 2022-10-23 thomas 				goto done;
249 3efd8e31 2022-10-23 thomas 			}
250 3efd8e31 2022-10-23 thomas 
251 3efd8e31 2022-10-23 thomas 			remote->mirror_references = 0;
252 3efd8e31 2022-10-23 thomas 			mirror = got_gitconfig_get_str(gitconfig, node->field,
253 3efd8e31 2022-10-23 thomas 			    "mirror");
254 3efd8e31 2022-10-23 thomas 			if (mirror != NULL && get_boolean_val(mirror))
255 3efd8e31 2022-10-23 thomas 				remote->mirror_references = 1;
256 3efd8e31 2022-10-23 thomas 
257 3efd8e31 2022-10-23 thomas 			i++;
258 3efd8e31 2022-10-23 thomas 			(*nremotes)++;
259 3efd8e31 2022-10-23 thomas 		}
260 3efd8e31 2022-10-23 thomas 	}
261 3efd8e31 2022-10-23 thomas done:
262 3efd8e31 2022-10-23 thomas 	if (fd != -1)
263 3efd8e31 2022-10-23 thomas 		close(fd);
264 3efd8e31 2022-10-23 thomas 	if (gitconfig)
265 3efd8e31 2022-10-23 thomas 		got_gitconfig_close(gitconfig);
266 3efd8e31 2022-10-23 thomas 	if (err) {
267 01a217a7 2023-02-07 thomas 		if (extnames && extvals && nextensions) {
268 01a217a7 2023-02-07 thomas 			for (i = 0; i < (*nextensions); i++) {
269 01a217a7 2023-02-07 thomas 				free((*extnames)[i]);
270 01a217a7 2023-02-07 thomas 				free((*extvals)[i]);
271 01a217a7 2023-02-07 thomas 			}
272 01a217a7 2023-02-07 thomas 			free(*extnames);
273 01a217a7 2023-02-07 thomas 			*extnames = NULL;
274 01a217a7 2023-02-07 thomas 			free(*extvals);
275 01a217a7 2023-02-07 thomas 			*extvals = NULL;
276 3efd8e31 2022-10-23 thomas 			*nextensions = 0;
277 3efd8e31 2022-10-23 thomas 		}
278 3efd8e31 2022-10-23 thomas 		if (remotes && nremotes) {
279 3efd8e31 2022-10-23 thomas 			for (i = 0; i < (*nremotes); i++) {
280 3efd8e31 2022-10-23 thomas 				struct got_remote_repo *remote;
281 3efd8e31 2022-10-23 thomas 				remote = &(*remotes)[i];
282 3efd8e31 2022-10-23 thomas 				free(remote->name);
283 3efd8e31 2022-10-23 thomas 				free(remote->fetch_url);
284 3efd8e31 2022-10-23 thomas 				free(remote->send_url);
285 3efd8e31 2022-10-23 thomas 			}
286 3efd8e31 2022-10-23 thomas 			free(*remotes);
287 3efd8e31 2022-10-23 thomas 			*remotes = NULL;
288 3efd8e31 2022-10-23 thomas 			*nremotes = 0;
289 3efd8e31 2022-10-23 thomas 		}
290 3efd8e31 2022-10-23 thomas 	}
291 3efd8e31 2022-10-23 thomas 	return err;
292 3efd8e31 2022-10-23 thomas }