1 13b2bc37 2022-10-23 stsp /*
  2 13b2bc37 2022-10-23 stsp  * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
  3 13b2bc37 2022-10-23 stsp  *
  4 13b2bc37 2022-10-23 stsp  * Permission to use, copy, modify, and distribute this software for any
  5 13b2bc37 2022-10-23 stsp  * purpose with or without fee is hereby granted, provided that the above
  6 13b2bc37 2022-10-23 stsp  * copyright notice and this permission notice appear in all copies.
  7 13b2bc37 2022-10-23 stsp  *
  8 13b2bc37 2022-10-23 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 13b2bc37 2022-10-23 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 13b2bc37 2022-10-23 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 13b2bc37 2022-10-23 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 13b2bc37 2022-10-23 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 13b2bc37 2022-10-23 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 13b2bc37 2022-10-23 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 13b2bc37 2022-10-23 stsp  */
 16 13b2bc37 2022-10-23 stsp 
 17 13b2bc37 2022-10-23 stsp #include <sys/queue.h>
 18 13b2bc37 2022-10-23 stsp #include <sys/tree.h>
 19 13b2bc37 2022-10-23 stsp 
 20 13b2bc37 2022-10-23 stsp #include <errno.h>
 21 13b2bc37 2022-10-23 stsp #include <event.h>
 22 13b2bc37 2022-10-23 stsp #include <fcntl.h>
 23 13b2bc37 2022-10-23 stsp #include <imsg.h>
 24 13b2bc37 2022-10-23 stsp #include <sha1.h>
 25 5822e79e 2023-02-23 op #include <sha2.h>
 26 13b2bc37 2022-10-23 stsp #include <stdio.h>
 27 13b2bc37 2022-10-23 stsp #include <stdlib.h>
 28 13b2bc37 2022-10-23 stsp #include <string.h>
 29 13b2bc37 2022-10-23 stsp #include <limits.h>
 30 13b2bc37 2022-10-23 stsp #include <unistd.h>
 31 13b2bc37 2022-10-23 stsp 
 32 13b2bc37 2022-10-23 stsp #include "got_error.h"
 33 13b2bc37 2022-10-23 stsp #include "got_object.h"
 34 13b2bc37 2022-10-23 stsp #include "got_repository.h"
 35 13b2bc37 2022-10-23 stsp #include "got_path.h"
 36 13b2bc37 2022-10-23 stsp 
 37 13b2bc37 2022-10-23 stsp #include "got_lib_gitconfig.h"
 38 13b2bc37 2022-10-23 stsp #include "got_lib_delta.h"
 39 13b2bc37 2022-10-23 stsp #include "got_lib_object.h"
 40 13b2bc37 2022-10-23 stsp #include "got_lib_object_cache.h"
 41 13b2bc37 2022-10-23 stsp #include "got_lib_privsep.h"
 42 13b2bc37 2022-10-23 stsp #include "got_lib_pack.h"
 43 13b2bc37 2022-10-23 stsp #include "got_lib_repository.h"
 44 13b2bc37 2022-10-23 stsp 
 45 13b2bc37 2022-10-23 stsp static int
 46 13b2bc37 2022-10-23 stsp get_boolean_val(char *val)
 47 13b2bc37 2022-10-23 stsp {
 48 13b2bc37 2022-10-23 stsp     return (strcasecmp(val, "true") == 0 ||
 49 13b2bc37 2022-10-23 stsp 	strcasecmp(val, "on") == 0 ||
 50 13b2bc37 2022-10-23 stsp 	strcasecmp(val, "yes") == 0 ||
 51 13b2bc37 2022-10-23 stsp 	strcmp(val, "1") == 0);
 52 13b2bc37 2022-10-23 stsp }
 53 13b2bc37 2022-10-23 stsp 
 54 d4fbd6eb 2024-01-26 op static int
 55 d4fbd6eb 2024-01-26 op skip_node(struct got_gitconfig *gitconfig,
 56 d4fbd6eb 2024-01-26 op     struct got_gitconfig_list_node *node)
 57 d4fbd6eb 2024-01-26 op {
 58 d4fbd6eb 2024-01-26 op 	/*
 59 d4fbd6eb 2024-01-26 op 	 * Skip config nodes which do not describe remotes, and remotes
 60 d4fbd6eb 2024-01-26 op 	 * which do not have a fetch URL defined (as used by git-annex).
 61 d4fbd6eb 2024-01-26 op 	 */
 62 d4fbd6eb 2024-01-26 op 	return (strncasecmp("remote \"", node->field, 8) != 0 ||
 63 d4fbd6eb 2024-01-26 op 	    got_gitconfig_get_str(gitconfig, node->field, "url") == NULL);
 64 d4fbd6eb 2024-01-26 op }
 65 d4fbd6eb 2024-01-26 op 
 66 13b2bc37 2022-10-23 stsp const struct got_error *
 67 13b2bc37 2022-10-23 stsp got_repo_read_gitconfig(int *gitconfig_repository_format_version,
 68 13b2bc37 2022-10-23 stsp     char **gitconfig_author_name, char **gitconfig_author_email,
 69 13b2bc37 2022-10-23 stsp     struct got_remote_repo **remotes, int *nremotes,
 70 b0ac38bb 2023-02-06 mark     char **gitconfig_owner, char ***extnames, char ***extvals,
 71 b0ac38bb 2023-02-06 mark     int *nextensions, const char *gitconfig_path)
 72 13b2bc37 2022-10-23 stsp {
 73 13b2bc37 2022-10-23 stsp 	const struct got_error *err = NULL;
 74 13b2bc37 2022-10-23 stsp 	struct got_gitconfig *gitconfig = NULL;
 75 13b2bc37 2022-10-23 stsp 	struct got_gitconfig_list *tags;
 76 13b2bc37 2022-10-23 stsp 	struct got_gitconfig_list_node *node;
 77 13b2bc37 2022-10-23 stsp 	int fd, i;
 78 13b2bc37 2022-10-23 stsp 	const char *author, *email, *owner;
 79 13b2bc37 2022-10-23 stsp 
 80 13b2bc37 2022-10-23 stsp 	*gitconfig_repository_format_version = 0;
 81 b0ac38bb 2023-02-06 mark 	if (extnames)
 82 b0ac38bb 2023-02-06 mark 		*extnames = NULL;
 83 b0ac38bb 2023-02-06 mark 	if (extvals)
 84 b0ac38bb 2023-02-06 mark 		*extvals = NULL;
 85 13b2bc37 2022-10-23 stsp 	if (nextensions)
 86 13b2bc37 2022-10-23 stsp 		*nextensions = 0;
 87 13b2bc37 2022-10-23 stsp 	*gitconfig_author_name = NULL;
 88 13b2bc37 2022-10-23 stsp 	*gitconfig_author_email = NULL;
 89 13b2bc37 2022-10-23 stsp 	if (remotes)
 90 13b2bc37 2022-10-23 stsp 		*remotes = NULL;
 91 13b2bc37 2022-10-23 stsp 	if (nremotes)
 92 13b2bc37 2022-10-23 stsp 		*nremotes = 0;
 93 13b2bc37 2022-10-23 stsp 	if (gitconfig_owner)
 94 13b2bc37 2022-10-23 stsp 		*gitconfig_owner = NULL;
 95 13b2bc37 2022-10-23 stsp 
 96 13b2bc37 2022-10-23 stsp 	fd = open(gitconfig_path, O_RDONLY | O_CLOEXEC);
 97 13b2bc37 2022-10-23 stsp 	if (fd == -1) {
 98 13b2bc37 2022-10-23 stsp 		if (errno == ENOENT)
 99 13b2bc37 2022-10-23 stsp 			return NULL;
100 13b2bc37 2022-10-23 stsp 		return got_error_from_errno2("open", gitconfig_path);
101 13b2bc37 2022-10-23 stsp 	}
102 13b2bc37 2022-10-23 stsp 
103 13b2bc37 2022-10-23 stsp 	err = got_gitconfig_open(&gitconfig, fd);
104 13b2bc37 2022-10-23 stsp 	if (err)
105 13b2bc37 2022-10-23 stsp 		goto done;
106 13b2bc37 2022-10-23 stsp 
107 13b2bc37 2022-10-23 stsp 	*gitconfig_repository_format_version = got_gitconfig_get_num(gitconfig,
108 13b2bc37 2022-10-23 stsp 	    "core", "repositoryformatversion", 0);
109 13b2bc37 2022-10-23 stsp 
110 13b2bc37 2022-10-23 stsp 	tags = got_gitconfig_get_tag_list(gitconfig, "extensions");
111 b0ac38bb 2023-02-06 mark 	if (extnames && extvals && nextensions && tags) {
112 13b2bc37 2022-10-23 stsp 		size_t numext = 0;
113 13b2bc37 2022-10-23 stsp 		TAILQ_FOREACH(node, &tags->fields, link) {
114 13b2bc37 2022-10-23 stsp 			char *ext = node->field;
115 13b2bc37 2022-10-23 stsp 			char *val = got_gitconfig_get_str(gitconfig,
116 13b2bc37 2022-10-23 stsp 			    "extensions", ext);
117 13b2bc37 2022-10-23 stsp 			if (get_boolean_val(val))
118 13b2bc37 2022-10-23 stsp 				numext++;
119 13b2bc37 2022-10-23 stsp 		}
120 b0ac38bb 2023-02-06 mark 		*extnames = calloc(numext, sizeof(char *));
121 b0ac38bb 2023-02-06 mark 		if (*extnames == NULL) {
122 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("calloc");
123 13b2bc37 2022-10-23 stsp 			goto done;
124 13b2bc37 2022-10-23 stsp 		}
125 b0ac38bb 2023-02-06 mark 		*extvals = calloc(numext, sizeof(char *));
126 b0ac38bb 2023-02-06 mark 		if (*extvals == NULL) {
127 b0ac38bb 2023-02-06 mark 			err = got_error_from_errno("calloc");
128 b0ac38bb 2023-02-06 mark 			goto done;
129 b0ac38bb 2023-02-06 mark 		}
130 13b2bc37 2022-10-23 stsp 		TAILQ_FOREACH(node, &tags->fields, link) {
131 13b2bc37 2022-10-23 stsp 			char *ext = node->field;
132 13b2bc37 2022-10-23 stsp 			char *val = got_gitconfig_get_str(gitconfig,
133 13b2bc37 2022-10-23 stsp 			    "extensions", ext);
134 13b2bc37 2022-10-23 stsp 			if (get_boolean_val(val)) {
135 b0ac38bb 2023-02-06 mark 				char *extstr = NULL, *valstr = NULL;
136 b0ac38bb 2023-02-06 mark 
137 b0ac38bb 2023-02-06 mark 				extstr = strdup(ext);
138 13b2bc37 2022-10-23 stsp 				if (extstr == NULL) {
139 13b2bc37 2022-10-23 stsp 					err = got_error_from_errno("strdup");
140 13b2bc37 2022-10-23 stsp 					goto done;
141 13b2bc37 2022-10-23 stsp 				}
142 b0ac38bb 2023-02-06 mark 				valstr = strdup(val);
143 b0ac38bb 2023-02-06 mark 				if (valstr == NULL) {
144 b0ac38bb 2023-02-06 mark 					err = got_error_from_errno("strdup");
145 b0ac38bb 2023-02-06 mark 					goto done;
146 b0ac38bb 2023-02-06 mark 				}
147 b0ac38bb 2023-02-06 mark 				(*extnames)[(*nextensions)] = extstr;
148 b0ac38bb 2023-02-06 mark 				(*extvals)[(*nextensions)] = valstr;
149 13b2bc37 2022-10-23 stsp 				(*nextensions)++;
150 13b2bc37 2022-10-23 stsp 			}
151 13b2bc37 2022-10-23 stsp 		}
152 13b2bc37 2022-10-23 stsp 	}
153 13b2bc37 2022-10-23 stsp 
154 13b2bc37 2022-10-23 stsp 	author = got_gitconfig_get_str(gitconfig, "user", "name");
155 13b2bc37 2022-10-23 stsp 	if (author) {
156 13b2bc37 2022-10-23 stsp 		*gitconfig_author_name = strdup(author);
157 13b2bc37 2022-10-23 stsp 		if (*gitconfig_author_name == NULL) {
158 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("strdup");
159 13b2bc37 2022-10-23 stsp 			goto done;
160 13b2bc37 2022-10-23 stsp 		}
161 13b2bc37 2022-10-23 stsp 	}
162 13b2bc37 2022-10-23 stsp 
163 13b2bc37 2022-10-23 stsp 	email = got_gitconfig_get_str(gitconfig, "user", "email");
164 13b2bc37 2022-10-23 stsp 	if (email) {
165 13b2bc37 2022-10-23 stsp 		*gitconfig_author_email = strdup(email);
166 13b2bc37 2022-10-23 stsp 		if (*gitconfig_author_email == NULL) {
167 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("strdup");
168 13b2bc37 2022-10-23 stsp 			goto done;
169 13b2bc37 2022-10-23 stsp 		}
170 13b2bc37 2022-10-23 stsp 	}
171 13b2bc37 2022-10-23 stsp 
172 13b2bc37 2022-10-23 stsp 	if (gitconfig_owner) {
173 13b2bc37 2022-10-23 stsp 		owner = got_gitconfig_get_str(gitconfig, "gotweb", "owner");
174 13b2bc37 2022-10-23 stsp 		if (owner == NULL)
175 13b2bc37 2022-10-23 stsp 			owner = got_gitconfig_get_str(gitconfig, "gitweb",
176 13b2bc37 2022-10-23 stsp 			    "owner");
177 13b2bc37 2022-10-23 stsp 		if (owner) {
178 13b2bc37 2022-10-23 stsp 			*gitconfig_owner = strdup(owner);
179 13b2bc37 2022-10-23 stsp 			if (*gitconfig_owner == NULL) {
180 13b2bc37 2022-10-23 stsp 				err = got_error_from_errno("strdup");
181 13b2bc37 2022-10-23 stsp 				goto done;
182 13b2bc37 2022-10-23 stsp 			}
183 13b2bc37 2022-10-23 stsp 
184 13b2bc37 2022-10-23 stsp 		}
185 13b2bc37 2022-10-23 stsp 	}
186 13b2bc37 2022-10-23 stsp 
187 13b2bc37 2022-10-23 stsp 	if (remotes && nremotes) {
188 13b2bc37 2022-10-23 stsp 		struct got_gitconfig_list *sections;
189 13b2bc37 2022-10-23 stsp 		size_t nalloc = 0;
190 13b2bc37 2022-10-23 stsp 		err = got_gitconfig_get_section_list(&sections, gitconfig);
191 13b2bc37 2022-10-23 stsp 		if (err)
192 13b2bc37 2022-10-23 stsp 			return err;
193 13b2bc37 2022-10-23 stsp 		TAILQ_FOREACH(node, &sections->fields, link) {
194 d4fbd6eb 2024-01-26 op 			if (skip_node(gitconfig, node))
195 13b2bc37 2022-10-23 stsp 				continue;
196 13b2bc37 2022-10-23 stsp 			nalloc++;
197 13b2bc37 2022-10-23 stsp 		}
198 13b2bc37 2022-10-23 stsp 
199 13b2bc37 2022-10-23 stsp 		*remotes = recallocarray(NULL, 0, nalloc, sizeof(**remotes));
200 13b2bc37 2022-10-23 stsp 		if (*remotes == NULL) {
201 13b2bc37 2022-10-23 stsp 			err = got_error_from_errno("recallocarray");
202 13b2bc37 2022-10-23 stsp 			goto done;
203 13b2bc37 2022-10-23 stsp 		}
204 13b2bc37 2022-10-23 stsp 
205 13b2bc37 2022-10-23 stsp 		i = 0;
206 13b2bc37 2022-10-23 stsp 		TAILQ_FOREACH(node, &sections->fields, link) {
207 13b2bc37 2022-10-23 stsp 			struct got_remote_repo *remote;
208 13b2bc37 2022-10-23 stsp 			char *name, *end, *mirror;
209 13b2bc37 2022-10-23 stsp 			const char *fetch_url, *send_url;
210 13b2bc37 2022-10-23 stsp 
211 d4fbd6eb 2024-01-26 op 			if (skip_node(gitconfig, node) != 0)
212 13b2bc37 2022-10-23 stsp 				continue;
213 13b2bc37 2022-10-23 stsp 
214 13b2bc37 2022-10-23 stsp 			remote = &(*remotes)[i];
215 13b2bc37 2022-10-23 stsp 
216 13b2bc37 2022-10-23 stsp 			name = strdup(node->field + 8);
217 13b2bc37 2022-10-23 stsp 			if (name == NULL) {
218 13b2bc37 2022-10-23 stsp 				err = got_error_from_errno("strdup");
219 13b2bc37 2022-10-23 stsp 				goto done;
220 13b2bc37 2022-10-23 stsp 			}
221 13b2bc37 2022-10-23 stsp 			end = strrchr(name, '"');
222 13b2bc37 2022-10-23 stsp 			if (end)
223 13b2bc37 2022-10-23 stsp 				*end = '\0';
224 13b2bc37 2022-10-23 stsp 			remote->name = name;
225 13b2bc37 2022-10-23 stsp 
226 13b2bc37 2022-10-23 stsp 			fetch_url = got_gitconfig_get_str(gitconfig,
227 13b2bc37 2022-10-23 stsp 			    node->field, "url");
228 13b2bc37 2022-10-23 stsp 			remote->fetch_url = strdup(fetch_url);
229 13b2bc37 2022-10-23 stsp 			if (remote->fetch_url == NULL) {
230 13b2bc37 2022-10-23 stsp 				err = got_error_from_errno("strdup");
231 13b2bc37 2022-10-23 stsp 				free(remote->name);
232 13b2bc37 2022-10-23 stsp 				remote->name = NULL;
233 13b2bc37 2022-10-23 stsp 				goto done;
234 13b2bc37 2022-10-23 stsp 			}
235 13b2bc37 2022-10-23 stsp 
236 13b2bc37 2022-10-23 stsp 			send_url = got_gitconfig_get_str(gitconfig,
237 13b2bc37 2022-10-23 stsp 			    node->field, "pushurl");
238 13b2bc37 2022-10-23 stsp 			if (send_url == NULL)
239 13b2bc37 2022-10-23 stsp 				send_url = got_gitconfig_get_str(gitconfig,
240 13b2bc37 2022-10-23 stsp 				    node->field, "url");
241 13b2bc37 2022-10-23 stsp 			remote->send_url = strdup(send_url);
242 13b2bc37 2022-10-23 stsp 			if (remote->send_url == NULL) {
243 13b2bc37 2022-10-23 stsp 				err = got_error_from_errno("strdup");
244 13b2bc37 2022-10-23 stsp 				free(remote->name);
245 13b2bc37 2022-10-23 stsp 				remote->name = NULL;
246 13b2bc37 2022-10-23 stsp 				free(remote->fetch_url);
247 13b2bc37 2022-10-23 stsp 				remote->fetch_url = NULL;
248 13b2bc37 2022-10-23 stsp 				goto done;
249 13b2bc37 2022-10-23 stsp 			}
250 13b2bc37 2022-10-23 stsp 
251 13b2bc37 2022-10-23 stsp 			remote->mirror_references = 0;
252 13b2bc37 2022-10-23 stsp 			mirror = got_gitconfig_get_str(gitconfig, node->field,
253 13b2bc37 2022-10-23 stsp 			    "mirror");
254 13b2bc37 2022-10-23 stsp 			if (mirror != NULL && get_boolean_val(mirror))
255 13b2bc37 2022-10-23 stsp 				remote->mirror_references = 1;
256 13b2bc37 2022-10-23 stsp 
257 13b2bc37 2022-10-23 stsp 			i++;
258 13b2bc37 2022-10-23 stsp 			(*nremotes)++;
259 13b2bc37 2022-10-23 stsp 		}
260 13b2bc37 2022-10-23 stsp 	}
261 13b2bc37 2022-10-23 stsp done:
262 13b2bc37 2022-10-23 stsp 	if (fd != -1)
263 13b2bc37 2022-10-23 stsp 		close(fd);
264 13b2bc37 2022-10-23 stsp 	if (gitconfig)
265 13b2bc37 2022-10-23 stsp 		got_gitconfig_close(gitconfig);
266 13b2bc37 2022-10-23 stsp 	if (err) {
267 b0ac38bb 2023-02-06 mark 		if (extnames && extvals && nextensions) {
268 b0ac38bb 2023-02-06 mark 			for (i = 0; i < (*nextensions); i++) {
269 b0ac38bb 2023-02-06 mark 				free((*extnames)[i]);
270 b0ac38bb 2023-02-06 mark 				free((*extvals)[i]);
271 b0ac38bb 2023-02-06 mark 			}
272 b0ac38bb 2023-02-06 mark 			free(*extnames);
273 b0ac38bb 2023-02-06 mark 			*extnames = NULL;
274 b0ac38bb 2023-02-06 mark 			free(*extvals);
275 b0ac38bb 2023-02-06 mark 			*extvals = NULL;
276 13b2bc37 2022-10-23 stsp 			*nextensions = 0;
277 13b2bc37 2022-10-23 stsp 		}
278 13b2bc37 2022-10-23 stsp 		if (remotes && nremotes) {
279 13b2bc37 2022-10-23 stsp 			for (i = 0; i < (*nremotes); i++) {
280 13b2bc37 2022-10-23 stsp 				struct got_remote_repo *remote;
281 13b2bc37 2022-10-23 stsp 				remote = &(*remotes)[i];
282 13b2bc37 2022-10-23 stsp 				free(remote->name);
283 13b2bc37 2022-10-23 stsp 				free(remote->fetch_url);
284 13b2bc37 2022-10-23 stsp 				free(remote->send_url);
285 13b2bc37 2022-10-23 stsp 			}
286 13b2bc37 2022-10-23 stsp 			free(*remotes);
287 13b2bc37 2022-10-23 stsp 			*remotes = NULL;
288 13b2bc37 2022-10-23 stsp 			*nremotes = 0;
289 13b2bc37 2022-10-23 stsp 		}
290 13b2bc37 2022-10-23 stsp 	}
291 13b2bc37 2022-10-23 stsp 	return err;
292 13b2bc37 2022-10-23 stsp }