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 #include <sys/types.h>
 19 3efd8e31 2022-10-23 thomas 
 20 3efd8e31 2022-10-23 thomas #include <event.h>
 21 3efd8e31 2022-10-23 thomas #include <errno.h>
 22 3efd8e31 2022-10-23 thomas #include <imsg.h>
 23 3efd8e31 2022-10-23 thomas #include <signal.h>
 24 3efd8e31 2022-10-23 thomas #include <stdlib.h>
 25 3efd8e31 2022-10-23 thomas #include <limits.h>
 26 3efd8e31 2022-10-23 thomas #include <poll.h>
 27 3efd8e31 2022-10-23 thomas #include <sha1.h>
 28 3efd8e31 2022-10-23 thomas #include <siphash.h>
 29 3efd8e31 2022-10-23 thomas #include <stdio.h>
 30 3efd8e31 2022-10-23 thomas #include <string.h>
 31 3efd8e31 2022-10-23 thomas #include <unistd.h>
 32 3efd8e31 2022-10-23 thomas 
 33 3efd8e31 2022-10-23 thomas #include "got_error.h"
 34 3efd8e31 2022-10-23 thomas #include "got_cancel.h"
 35 3efd8e31 2022-10-23 thomas #include "got_object.h"
 36 3efd8e31 2022-10-23 thomas #include "got_repository.h"
 37 3efd8e31 2022-10-23 thomas #include "got_reference.h"
 38 3efd8e31 2022-10-23 thomas #include "got_repository_admin.h"
 39 3efd8e31 2022-10-23 thomas 
 40 3efd8e31 2022-10-23 thomas #include "got_lib_delta.h"
 41 3efd8e31 2022-10-23 thomas #include "got_lib_object.h"
 42 3efd8e31 2022-10-23 thomas #include "got_lib_object_idset.h"
 43 3efd8e31 2022-10-23 thomas #include "got_lib_sha1.h"
 44 3efd8e31 2022-10-23 thomas #include "got_lib_pack.h"
 45 3efd8e31 2022-10-23 thomas #include "got_lib_ratelimit.h"
 46 3efd8e31 2022-10-23 thomas #include "got_lib_pack_create.h"
 47 3efd8e31 2022-10-23 thomas #include "got_lib_poll.h"
 48 3efd8e31 2022-10-23 thomas 
 49 3efd8e31 2022-10-23 thomas #include "log.h"
 50 3efd8e31 2022-10-23 thomas #include "gotd.h"
 51 3efd8e31 2022-10-23 thomas #include "repo_read.h"
 52 3efd8e31 2022-10-23 thomas 
 53 3efd8e31 2022-10-23 thomas #ifndef nitems
 54 3efd8e31 2022-10-23 thomas #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
 55 3efd8e31 2022-10-23 thomas #endif
 56 3efd8e31 2022-10-23 thomas 
 57 3efd8e31 2022-10-23 thomas static struct repo_read {
 58 3efd8e31 2022-10-23 thomas 	pid_t pid;
 59 3efd8e31 2022-10-23 thomas 	const char *title;
 60 3efd8e31 2022-10-23 thomas 	struct got_repository *repo;
 61 3efd8e31 2022-10-23 thomas 	int *pack_fds;
 62 3efd8e31 2022-10-23 thomas 	int *temp_fds;
 63 62ee7d94 2023-01-10 thomas 	int session_fd;
 64 62ee7d94 2023-01-10 thomas 	struct gotd_imsgev session_iev;
 65 3efd8e31 2022-10-23 thomas } repo_read;
 66 3efd8e31 2022-10-23 thomas 
 67 9148c8a7 2023-01-02 thomas static struct repo_read_client {
 68 3efd8e31 2022-10-23 thomas 	uint32_t			 id;
 69 3efd8e31 2022-10-23 thomas 	int				 fd;
 70 3efd8e31 2022-10-23 thomas 	int				 delta_cache_fd;
 71 3efd8e31 2022-10-23 thomas 	int				 report_progress;
 72 cc4cc677 2022-10-28 thomas 	int				 pack_pipe;
 73 3efd8e31 2022-10-23 thomas 	struct gotd_object_id_array	 want_ids;
 74 3efd8e31 2022-10-23 thomas 	struct gotd_object_id_array	 have_ids;
 75 9148c8a7 2023-01-02 thomas } repo_read_client;
 76 3efd8e31 2022-10-23 thomas 
 77 3efd8e31 2022-10-23 thomas static volatile sig_atomic_t sigint_received;
 78 3efd8e31 2022-10-23 thomas static volatile sig_atomic_t sigterm_received;
 79 3efd8e31 2022-10-23 thomas 
 80 3efd8e31 2022-10-23 thomas static void
 81 3efd8e31 2022-10-23 thomas catch_sigint(int signo)
 82 3efd8e31 2022-10-23 thomas {
 83 3efd8e31 2022-10-23 thomas 	sigint_received = 1;
 84 3efd8e31 2022-10-23 thomas }
 85 3efd8e31 2022-10-23 thomas 
 86 3efd8e31 2022-10-23 thomas static void
 87 3efd8e31 2022-10-23 thomas catch_sigterm(int signo)
 88 3efd8e31 2022-10-23 thomas {
 89 3efd8e31 2022-10-23 thomas 	sigterm_received = 1;
 90 3efd8e31 2022-10-23 thomas }
 91 3efd8e31 2022-10-23 thomas 
 92 3efd8e31 2022-10-23 thomas static const struct got_error *
 93 3efd8e31 2022-10-23 thomas check_cancelled(void *arg)
 94 3efd8e31 2022-10-23 thomas {
 95 3efd8e31 2022-10-23 thomas 	if (sigint_received || sigterm_received)
 96 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_CANCELLED);
 97 3efd8e31 2022-10-23 thomas 
 98 3efd8e31 2022-10-23 thomas 	return NULL;
 99 3efd8e31 2022-10-23 thomas }
100 3efd8e31 2022-10-23 thomas 
101 3efd8e31 2022-10-23 thomas static const struct got_error *
102 a7e9cbc6 2022-11-08 thomas send_symref(struct got_reference *symref, struct got_object_id *target_id,
103 a7e9cbc6 2022-11-08 thomas     struct imsgbuf *ibuf)
104 3efd8e31 2022-10-23 thomas {
105 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
106 3efd8e31 2022-10-23 thomas 	struct gotd_imsg_symref isymref;
107 3efd8e31 2022-10-23 thomas 	const char *refname = got_ref_get_name(symref);
108 3efd8e31 2022-10-23 thomas 	const char *target = got_ref_get_symref_target(symref);
109 3efd8e31 2022-10-23 thomas 	size_t len;
110 3efd8e31 2022-10-23 thomas 	struct ibuf *wbuf;
111 3efd8e31 2022-10-23 thomas 
112 3efd8e31 2022-10-23 thomas 	memset(&isymref, 0, sizeof(isymref));
113 3efd8e31 2022-10-23 thomas 	isymref.name_len = strlen(refname);
114 3efd8e31 2022-10-23 thomas 	isymref.target_len = strlen(target);
115 3efd8e31 2022-10-23 thomas 	memcpy(isymref.target_id, target_id->sha1, sizeof(isymref.target_id));
116 3efd8e31 2022-10-23 thomas 
117 3efd8e31 2022-10-23 thomas 	len = sizeof(isymref) + isymref.name_len + isymref.target_len;
118 3efd8e31 2022-10-23 thomas 	if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
119 3efd8e31 2022-10-23 thomas 		err = got_error(GOT_ERR_NO_SPACE);
120 3efd8e31 2022-10-23 thomas 		goto done;
121 3efd8e31 2022-10-23 thomas 	}
122 3efd8e31 2022-10-23 thomas 
123 3efd8e31 2022-10-23 thomas 	wbuf = imsg_create(ibuf, GOTD_IMSG_SYMREF, 0, 0, len);
124 3efd8e31 2022-10-23 thomas 	if (wbuf == NULL) {
125 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("imsg_create SYMREF");
126 3efd8e31 2022-10-23 thomas 		goto done;
127 3efd8e31 2022-10-23 thomas 	}
128 3efd8e31 2022-10-23 thomas 
129 3efd8e31 2022-10-23 thomas 	if (imsg_add(wbuf, &isymref, sizeof(isymref)) == -1) {
130 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("imsg_add SYMREF");
131 3efd8e31 2022-10-23 thomas 		goto done;
132 3efd8e31 2022-10-23 thomas 	}
133 3efd8e31 2022-10-23 thomas 	if (imsg_add(wbuf, refname, isymref.name_len) == -1) {
134 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("imsg_add SYMREF");
135 3efd8e31 2022-10-23 thomas 		goto done;
136 3efd8e31 2022-10-23 thomas 	}
137 3efd8e31 2022-10-23 thomas 	if (imsg_add(wbuf, target, isymref.target_len) == -1) {
138 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("imsg_add SYMREF");
139 3efd8e31 2022-10-23 thomas 		goto done;
140 3efd8e31 2022-10-23 thomas 	}
141 3efd8e31 2022-10-23 thomas 
142 3efd8e31 2022-10-23 thomas 	wbuf->fd = -1;
143 3efd8e31 2022-10-23 thomas 	imsg_close(ibuf, wbuf);
144 3efd8e31 2022-10-23 thomas done:
145 3efd8e31 2022-10-23 thomas 	free(target_id);
146 3efd8e31 2022-10-23 thomas 	return err;
147 3efd8e31 2022-10-23 thomas }
148 3efd8e31 2022-10-23 thomas 
149 3efd8e31 2022-10-23 thomas static const struct got_error *
150 3efd8e31 2022-10-23 thomas send_peeled_tag_ref(struct got_reference *ref, struct got_object *obj,
151 3efd8e31 2022-10-23 thomas     struct imsgbuf *ibuf)
152 3efd8e31 2022-10-23 thomas {
153 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
154 3efd8e31 2022-10-23 thomas 	struct got_tag_object *tag;
155 3efd8e31 2022-10-23 thomas 	size_t namelen, len;
156 3efd8e31 2022-10-23 thomas 	char *peeled_refname = NULL;
157 3efd8e31 2022-10-23 thomas 	struct got_object_id *id;
158 3efd8e31 2022-10-23 thomas 	struct ibuf *wbuf;
159 3efd8e31 2022-10-23 thomas 
160 3efd8e31 2022-10-23 thomas 	err = got_object_tag_open(&tag, repo_read.repo, obj);
161 3efd8e31 2022-10-23 thomas 	if (err)
162 3efd8e31 2022-10-23 thomas 		return err;
163 3efd8e31 2022-10-23 thomas 
164 3efd8e31 2022-10-23 thomas 	if (asprintf(&peeled_refname, "%s^{}", got_ref_get_name(ref)) == -1) {
165 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("asprintf");
166 3efd8e31 2022-10-23 thomas 		goto done;
167 3efd8e31 2022-10-23 thomas 	}
168 3efd8e31 2022-10-23 thomas 
169 3efd8e31 2022-10-23 thomas 	id = got_object_tag_get_object_id(tag);
170 3efd8e31 2022-10-23 thomas 	namelen = strlen(peeled_refname);
171 3efd8e31 2022-10-23 thomas 
172 3efd8e31 2022-10-23 thomas 	len = sizeof(struct gotd_imsg_ref) + namelen;
173 3efd8e31 2022-10-23 thomas 	if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
174 3efd8e31 2022-10-23 thomas 		err = got_error(GOT_ERR_NO_SPACE);
175 3efd8e31 2022-10-23 thomas 		goto done;
176 3efd8e31 2022-10-23 thomas 	}
177 3efd8e31 2022-10-23 thomas 
178 3efd8e31 2022-10-23 thomas 	wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_READ,
179 3efd8e31 2022-10-23 thomas 	    repo_read.pid, len);
180 3efd8e31 2022-10-23 thomas 	if (wbuf == NULL) {
181 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("imsg_create MREF");
182 3efd8e31 2022-10-23 thomas 		goto done;
183 3efd8e31 2022-10-23 thomas 	}
184 3efd8e31 2022-10-23 thomas 
185 3efd8e31 2022-10-23 thomas 	/* Keep in sync with struct gotd_imsg_ref definition. */
186 3efd8e31 2022-10-23 thomas 	if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1) {
187 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("imsg_add REF");
188 3efd8e31 2022-10-23 thomas 		goto done;
189 3efd8e31 2022-10-23 thomas 	}
190 3efd8e31 2022-10-23 thomas 	if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1) {
191 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("imsg_add REF");
192 3efd8e31 2022-10-23 thomas 		goto done;
193 3efd8e31 2022-10-23 thomas 	}
194 3efd8e31 2022-10-23 thomas 	if (imsg_add(wbuf, peeled_refname, namelen) == -1) {
195 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("imsg_add REF");
196 3efd8e31 2022-10-23 thomas 		goto done;
197 3efd8e31 2022-10-23 thomas 	}
198 3efd8e31 2022-10-23 thomas 
199 3efd8e31 2022-10-23 thomas 	wbuf->fd = -1;
200 3efd8e31 2022-10-23 thomas 	imsg_close(ibuf, wbuf);
201 3efd8e31 2022-10-23 thomas done:
202 3efd8e31 2022-10-23 thomas 	got_object_tag_close(tag);
203 3efd8e31 2022-10-23 thomas 	return err;
204 3efd8e31 2022-10-23 thomas }
205 3efd8e31 2022-10-23 thomas 
206 3efd8e31 2022-10-23 thomas static const struct got_error *
207 3efd8e31 2022-10-23 thomas send_ref(struct got_reference *ref, struct imsgbuf *ibuf)
208 3efd8e31 2022-10-23 thomas {
209 3efd8e31 2022-10-23 thomas 	const struct got_error *err;
210 3efd8e31 2022-10-23 thomas 	const char *refname = got_ref_get_name(ref);
211 3efd8e31 2022-10-23 thomas 	size_t namelen;
212 3efd8e31 2022-10-23 thomas 	struct got_object_id *id = NULL;
213 3efd8e31 2022-10-23 thomas 	struct got_object *obj = NULL;
214 3efd8e31 2022-10-23 thomas 	size_t len;
215 3efd8e31 2022-10-23 thomas 	struct ibuf *wbuf;
216 3efd8e31 2022-10-23 thomas 
217 3efd8e31 2022-10-23 thomas 	namelen = strlen(refname);
218 3efd8e31 2022-10-23 thomas 
219 3efd8e31 2022-10-23 thomas 	len = sizeof(struct gotd_imsg_ref) + namelen;
220 3efd8e31 2022-10-23 thomas 	if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
221 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_NO_SPACE);
222 3efd8e31 2022-10-23 thomas 
223 3efd8e31 2022-10-23 thomas 	err = got_ref_resolve(&id, repo_read.repo, ref);
224 3efd8e31 2022-10-23 thomas 	if (err)
225 3efd8e31 2022-10-23 thomas 		return err;
226 3efd8e31 2022-10-23 thomas 
227 3efd8e31 2022-10-23 thomas 	wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_READ,
228 3efd8e31 2022-10-23 thomas 	    repo_read.pid, len);
229 3efd8e31 2022-10-23 thomas 	if (wbuf == NULL) {
230 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("imsg_create REF");
231 3efd8e31 2022-10-23 thomas 		goto done;
232 3efd8e31 2022-10-23 thomas 	}
233 3efd8e31 2022-10-23 thomas 
234 3efd8e31 2022-10-23 thomas 	/* Keep in sync with struct gotd_imsg_ref definition. */
235 3efd8e31 2022-10-23 thomas 	if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1)
236 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("imsg_add REF");
237 3efd8e31 2022-10-23 thomas 	if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1)
238 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("imsg_add REF");
239 3efd8e31 2022-10-23 thomas 	if (imsg_add(wbuf, refname, namelen) == -1)
240 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("imsg_add REF");
241 3efd8e31 2022-10-23 thomas 
242 3efd8e31 2022-10-23 thomas 	wbuf->fd = -1;
243 3efd8e31 2022-10-23 thomas 	imsg_close(ibuf, wbuf);
244 3efd8e31 2022-10-23 thomas 
245 3efd8e31 2022-10-23 thomas 	err = got_object_open(&obj, repo_read.repo, id);
246 3efd8e31 2022-10-23 thomas 	if (err)
247 3efd8e31 2022-10-23 thomas 		goto done;
248 3efd8e31 2022-10-23 thomas 	if (obj->type == GOT_OBJ_TYPE_TAG)
249 3efd8e31 2022-10-23 thomas 		err = send_peeled_tag_ref(ref, obj, ibuf);
250 3efd8e31 2022-10-23 thomas done:
251 3efd8e31 2022-10-23 thomas 	if (obj)
252 3efd8e31 2022-10-23 thomas 		got_object_close(obj);
253 3efd8e31 2022-10-23 thomas 	free(id);
254 3efd8e31 2022-10-23 thomas 	return err;
255 3efd8e31 2022-10-23 thomas }
256 3efd8e31 2022-10-23 thomas 
257 3efd8e31 2022-10-23 thomas static const struct got_error *
258 9148c8a7 2023-01-02 thomas list_refs(struct imsg *imsg)
259 3efd8e31 2022-10-23 thomas {
260 3efd8e31 2022-10-23 thomas 	const struct got_error *err;
261 9148c8a7 2023-01-02 thomas 	struct repo_read_client *client = &repo_read_client;
262 3efd8e31 2022-10-23 thomas 	struct got_reflist_head refs;
263 3efd8e31 2022-10-23 thomas 	struct got_reflist_entry *re;
264 3efd8e31 2022-10-23 thomas 	struct gotd_imsg_list_refs_internal ireq;
265 3efd8e31 2022-10-23 thomas 	size_t datalen;
266 3efd8e31 2022-10-23 thomas 	struct gotd_imsg_reflist irefs;
267 3efd8e31 2022-10-23 thomas 	struct imsgbuf ibuf;
268 3efd8e31 2022-10-23 thomas 	int client_fd = imsg->fd;
269 a7e9cbc6 2022-11-08 thomas 	struct got_object_id *head_target_id = NULL;
270 3efd8e31 2022-10-23 thomas 
271 3efd8e31 2022-10-23 thomas 	TAILQ_INIT(&refs);
272 3efd8e31 2022-10-23 thomas 
273 3efd8e31 2022-10-23 thomas 	if (client_fd == -1)
274 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
275 3efd8e31 2022-10-23 thomas 
276 3efd8e31 2022-10-23 thomas 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
277 3efd8e31 2022-10-23 thomas 	if (datalen != sizeof(ireq))
278 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_LEN);
279 3efd8e31 2022-10-23 thomas 	memcpy(&ireq, imsg->data, sizeof(ireq));
280 3efd8e31 2022-10-23 thomas 
281 9148c8a7 2023-01-02 thomas 	if (ireq.client_id == 0)
282 9148c8a7 2023-01-02 thomas 		return got_error(GOT_ERR_CLIENT_ID);
283 9148c8a7 2023-01-02 thomas 	if (client->id != 0) {
284 9148c8a7 2023-01-02 thomas 		return got_error_msg(GOT_ERR_CLIENT_ID,
285 9148c8a7 2023-01-02 thomas 		    "duplicate list-refs request");
286 9148c8a7 2023-01-02 thomas 	}
287 9148c8a7 2023-01-02 thomas 	client->id = ireq.client_id;
288 9148c8a7 2023-01-02 thomas 	client->fd = client_fd;
289 9148c8a7 2023-01-02 thomas 	client->delta_cache_fd = -1;
290 9148c8a7 2023-01-02 thomas 	client->pack_pipe = -1;
291 3efd8e31 2022-10-23 thomas 
292 3efd8e31 2022-10-23 thomas 	imsg_init(&ibuf, client_fd);
293 3efd8e31 2022-10-23 thomas 
294 3efd8e31 2022-10-23 thomas 	err = got_ref_list(&refs, repo_read.repo, "",
295 3efd8e31 2022-10-23 thomas 	    got_ref_cmp_by_name, NULL);
296 3efd8e31 2022-10-23 thomas 	if (err)
297 3efd8e31 2022-10-23 thomas 		return err;
298 3efd8e31 2022-10-23 thomas 
299 3efd8e31 2022-10-23 thomas 	memset(&irefs, 0, sizeof(irefs));
300 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH(re, &refs, entry) {
301 3efd8e31 2022-10-23 thomas 		struct got_object_id *id;
302 3efd8e31 2022-10-23 thomas 		int obj_type;
303 3efd8e31 2022-10-23 thomas 
304 3efd8e31 2022-10-23 thomas 		if (got_ref_is_symbolic(re->ref)) {
305 3efd8e31 2022-10-23 thomas 			const char *refname = got_ref_get_name(re->ref);
306 a7e9cbc6 2022-11-08 thomas 			if (strcmp(refname, GOT_REF_HEAD) != 0)
307 a7e9cbc6 2022-11-08 thomas 				continue;
308 a7e9cbc6 2022-11-08 thomas 			err = got_ref_resolve(&head_target_id, repo_read.repo,
309 a7e9cbc6 2022-11-08 thomas 			    re->ref);
310 a7e9cbc6 2022-11-08 thomas 			if (err) {
311 a7e9cbc6 2022-11-08 thomas 				if (err->code != GOT_ERR_NOT_REF)
312 a7e9cbc6 2022-11-08 thomas 					return err;
313 a7e9cbc6 2022-11-08 thomas 				/*
314 a7e9cbc6 2022-11-08 thomas 				 * HEAD points to a non-existent branch.
315 a7e9cbc6 2022-11-08 thomas 				 * Do not advertise it.
316 a7e9cbc6 2022-11-08 thomas 				 * Matches git-daemon's behaviour.
317 a7e9cbc6 2022-11-08 thomas 				 */
318 a7e9cbc6 2022-11-08 thomas 				head_target_id = NULL;
319 a7e9cbc6 2022-11-08 thomas 				err = NULL;
320 a7e9cbc6 2022-11-08 thomas 			} else
321 3efd8e31 2022-10-23 thomas 				irefs.nrefs++;
322 3efd8e31 2022-10-23 thomas 			continue;
323 3efd8e31 2022-10-23 thomas 		}
324 3efd8e31 2022-10-23 thomas 
325 3efd8e31 2022-10-23 thomas 		irefs.nrefs++;
326 3efd8e31 2022-10-23 thomas 
327 3efd8e31 2022-10-23 thomas 		/* Account for a peeled tag refs. */
328 3efd8e31 2022-10-23 thomas 		err = got_ref_resolve(&id, repo_read.repo, re->ref);
329 3efd8e31 2022-10-23 thomas 		if (err)
330 3efd8e31 2022-10-23 thomas 			goto done;
331 8652e561 2023-01-14 thomas 		err = got_object_get_type(&obj_type, repo_read.repo, id);
332 3efd8e31 2022-10-23 thomas 		free(id);
333 3efd8e31 2022-10-23 thomas 		if (err)
334 3efd8e31 2022-10-23 thomas 			goto done;
335 3efd8e31 2022-10-23 thomas 		if (obj_type == GOT_OBJ_TYPE_TAG)
336 3efd8e31 2022-10-23 thomas 			irefs.nrefs++;
337 3efd8e31 2022-10-23 thomas 	}
338 3efd8e31 2022-10-23 thomas 
339 3efd8e31 2022-10-23 thomas 	if (imsg_compose(&ibuf, GOTD_IMSG_REFLIST, PROC_REPO_READ,
340 3efd8e31 2022-10-23 thomas 	    repo_read.pid, -1, &irefs, sizeof(irefs)) == -1) {
341 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("imsg_compose REFLIST");
342 3efd8e31 2022-10-23 thomas 		goto done;
343 3efd8e31 2022-10-23 thomas 	}
344 3efd8e31 2022-10-23 thomas 
345 3efd8e31 2022-10-23 thomas 	/*
346 3efd8e31 2022-10-23 thomas 	 * Send the HEAD symref first. In Git-protocol versions < 2
347 3efd8e31 2022-10-23 thomas 	 * the HEAD symref must be announced on the initial line of
348 3efd8e31 2022-10-23 thomas 	 * the server's ref advertisement.
349 3efd8e31 2022-10-23 thomas 	 * For now, we do not advertise symrefs other than HEAD.
350 3efd8e31 2022-10-23 thomas 	 */
351 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH(re, &refs, entry) {
352 3efd8e31 2022-10-23 thomas 		if (!got_ref_is_symbolic(re->ref) ||
353 a7e9cbc6 2022-11-08 thomas 		    strcmp(got_ref_get_name(re->ref), GOT_REF_HEAD) != 0 ||
354 a7e9cbc6 2022-11-08 thomas 		    head_target_id == NULL)
355 3efd8e31 2022-10-23 thomas 			continue;
356 a7e9cbc6 2022-11-08 thomas 		err = send_symref(re->ref, head_target_id, &ibuf);
357 3efd8e31 2022-10-23 thomas 		if (err)
358 3efd8e31 2022-10-23 thomas 			goto done;
359 3efd8e31 2022-10-23 thomas 		break;
360 3efd8e31 2022-10-23 thomas 	}
361 3efd8e31 2022-10-23 thomas 	TAILQ_FOREACH(re, &refs, entry) {
362 3efd8e31 2022-10-23 thomas 		if (got_ref_is_symbolic(re->ref))
363 3efd8e31 2022-10-23 thomas 			continue;
364 3efd8e31 2022-10-23 thomas 		err = send_ref(re->ref, &ibuf);
365 3efd8e31 2022-10-23 thomas 		if (err)
366 3efd8e31 2022-10-23 thomas 			goto done;
367 3efd8e31 2022-10-23 thomas 	}
368 3efd8e31 2022-10-23 thomas 
369 3efd8e31 2022-10-23 thomas 	err = gotd_imsg_flush(&ibuf);
370 3efd8e31 2022-10-23 thomas done:
371 3efd8e31 2022-10-23 thomas 	got_ref_list_free(&refs);
372 3efd8e31 2022-10-23 thomas 	imsg_clear(&ibuf);
373 3efd8e31 2022-10-23 thomas 	return err;
374 3efd8e31 2022-10-23 thomas }
375 3efd8e31 2022-10-23 thomas 
376 3efd8e31 2022-10-23 thomas static const struct got_error *
377 3efd8e31 2022-10-23 thomas record_object_id(struct gotd_object_id_array *array, struct got_object_id *id)
378 3efd8e31 2022-10-23 thomas {
379 3efd8e31 2022-10-23 thomas 	const size_t alloc_chunksz = 256;
380 3efd8e31 2022-10-23 thomas 
381 3efd8e31 2022-10-23 thomas 	if (array->ids == NULL) {
382 3efd8e31 2022-10-23 thomas 		array->ids = reallocarray(NULL, alloc_chunksz,
383 3efd8e31 2022-10-23 thomas 		    sizeof(*array->ids));
384 3efd8e31 2022-10-23 thomas 		if (array->ids == NULL)
385 3efd8e31 2022-10-23 thomas 			return got_error_from_errno("reallocarray");
386 3efd8e31 2022-10-23 thomas 		array->nalloc = alloc_chunksz;
387 3efd8e31 2022-10-23 thomas 		array->nids = 0;
388 3efd8e31 2022-10-23 thomas 	} else if (array->nalloc <= array->nids) {
389 3efd8e31 2022-10-23 thomas 		struct got_object_id **new;
390 3efd8e31 2022-10-23 thomas 		new = recallocarray(array->ids, array->nalloc,
391 3efd8e31 2022-10-23 thomas 		    array->nalloc + alloc_chunksz, sizeof(*new));
392 3efd8e31 2022-10-23 thomas 		if (new == NULL)
393 3efd8e31 2022-10-23 thomas 			return got_error_from_errno("recallocarray");
394 3efd8e31 2022-10-23 thomas 		array->ids = new;
395 3efd8e31 2022-10-23 thomas 		array->nalloc += alloc_chunksz;
396 3efd8e31 2022-10-23 thomas 	}
397 3efd8e31 2022-10-23 thomas 
398 3efd8e31 2022-10-23 thomas 	array->ids[array->nids] = got_object_id_dup(id);
399 3efd8e31 2022-10-23 thomas 	if (array->ids[array->nids] == NULL)
400 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("got_object_id_dup");
401 3efd8e31 2022-10-23 thomas 	array->nids++;
402 3efd8e31 2022-10-23 thomas 	return NULL;
403 3efd8e31 2022-10-23 thomas }
404 3efd8e31 2022-10-23 thomas 
405 3efd8e31 2022-10-23 thomas static void
406 3efd8e31 2022-10-23 thomas free_object_ids(struct gotd_object_id_array *array)
407 3efd8e31 2022-10-23 thomas {
408 3efd8e31 2022-10-23 thomas 	size_t i;
409 3efd8e31 2022-10-23 thomas 
410 3efd8e31 2022-10-23 thomas 	for (i = 0; i < array->nids; i++)
411 3efd8e31 2022-10-23 thomas 		free(array->ids[i]);
412 3efd8e31 2022-10-23 thomas 	free(array->ids);
413 3efd8e31 2022-10-23 thomas 
414 3efd8e31 2022-10-23 thomas 	array->ids = NULL;
415 3efd8e31 2022-10-23 thomas 	array->nalloc = 0;
416 3efd8e31 2022-10-23 thomas 	array->nids = 0;
417 3efd8e31 2022-10-23 thomas }
418 3efd8e31 2022-10-23 thomas 
419 3efd8e31 2022-10-23 thomas static const struct got_error *
420 9148c8a7 2023-01-02 thomas recv_want(struct imsg *imsg)
421 3efd8e31 2022-10-23 thomas {
422 3efd8e31 2022-10-23 thomas 	const struct got_error *err;
423 9148c8a7 2023-01-02 thomas 	struct repo_read_client *client = &repo_read_client;
424 3efd8e31 2022-10-23 thomas 	struct gotd_imsg_want iwant;
425 3efd8e31 2022-10-23 thomas 	size_t datalen;
426 3efd8e31 2022-10-23 thomas 	char hex[SHA1_DIGEST_STRING_LENGTH];
427 3efd8e31 2022-10-23 thomas 	struct got_object_id id;
428 3efd8e31 2022-10-23 thomas 	int obj_type;
429 3efd8e31 2022-10-23 thomas 	struct imsgbuf ibuf;
430 3efd8e31 2022-10-23 thomas 
431 3efd8e31 2022-10-23 thomas 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
432 3efd8e31 2022-10-23 thomas 	if (datalen != sizeof(iwant))
433 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_LEN);
434 3efd8e31 2022-10-23 thomas 	memcpy(&iwant, imsg->data, sizeof(iwant));
435 3efd8e31 2022-10-23 thomas 
436 3efd8e31 2022-10-23 thomas 	memset(&id, 0, sizeof(id));
437 3efd8e31 2022-10-23 thomas 	memcpy(id.sha1, iwant.object_id, SHA1_DIGEST_LENGTH);
438 3efd8e31 2022-10-23 thomas 
439 3efd8e31 2022-10-23 thomas 	if (log_getverbose() > 0 &&
440 3efd8e31 2022-10-23 thomas 	    got_sha1_digest_to_str(id.sha1, hex, sizeof(hex)))
441 3efd8e31 2022-10-23 thomas 		log_debug("client wants %s", hex);
442 3efd8e31 2022-10-23 thomas 
443 9148c8a7 2023-01-02 thomas 	imsg_init(&ibuf, client->fd);
444 3efd8e31 2022-10-23 thomas 
445 3efd8e31 2022-10-23 thomas 	err = got_object_get_type(&obj_type, repo_read.repo, &id);
446 3efd8e31 2022-10-23 thomas 	if (err)
447 3efd8e31 2022-10-23 thomas 		return err;
448 3efd8e31 2022-10-23 thomas 
449 3efd8e31 2022-10-23 thomas 	if (obj_type != GOT_OBJ_TYPE_COMMIT &&
450 3efd8e31 2022-10-23 thomas 	    obj_type != GOT_OBJ_TYPE_TAG)
451 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_OBJ_TYPE);
452 3efd8e31 2022-10-23 thomas 
453 9148c8a7 2023-01-02 thomas 	err = record_object_id(&client->want_ids, &id);
454 3efd8e31 2022-10-23 thomas 	if (err)
455 3efd8e31 2022-10-23 thomas 		return err;
456 3efd8e31 2022-10-23 thomas 
457 3efd8e31 2022-10-23 thomas 	gotd_imsg_send_ack(&id, &ibuf, PROC_REPO_READ, repo_read.pid);
458 3efd8e31 2022-10-23 thomas 	imsg_clear(&ibuf);
459 3efd8e31 2022-10-23 thomas 	return err;
460 3efd8e31 2022-10-23 thomas }
461 3efd8e31 2022-10-23 thomas 
462 3efd8e31 2022-10-23 thomas static const struct got_error *
463 9148c8a7 2023-01-02 thomas recv_have(struct imsg *imsg)
464 3efd8e31 2022-10-23 thomas {
465 3efd8e31 2022-10-23 thomas 	const struct got_error *err;
466 9148c8a7 2023-01-02 thomas 	struct repo_read_client *client = &repo_read_client;
467 3efd8e31 2022-10-23 thomas 	struct gotd_imsg_have ihave;
468 3efd8e31 2022-10-23 thomas 	size_t datalen;
469 3efd8e31 2022-10-23 thomas 	char hex[SHA1_DIGEST_STRING_LENGTH];
470 3efd8e31 2022-10-23 thomas 	struct got_object_id id;
471 3efd8e31 2022-10-23 thomas 	int obj_type;
472 3efd8e31 2022-10-23 thomas 	struct imsgbuf ibuf;
473 3efd8e31 2022-10-23 thomas 
474 3efd8e31 2022-10-23 thomas 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
475 3efd8e31 2022-10-23 thomas 	if (datalen != sizeof(ihave))
476 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_LEN);
477 3efd8e31 2022-10-23 thomas 	memcpy(&ihave, imsg->data, sizeof(ihave));
478 3efd8e31 2022-10-23 thomas 
479 3efd8e31 2022-10-23 thomas 	memset(&id, 0, sizeof(id));
480 3efd8e31 2022-10-23 thomas 	memcpy(id.sha1, ihave.object_id, SHA1_DIGEST_LENGTH);
481 3efd8e31 2022-10-23 thomas 
482 3efd8e31 2022-10-23 thomas 	if (log_getverbose() > 0 &&
483 3efd8e31 2022-10-23 thomas 	    got_sha1_digest_to_str(id.sha1, hex, sizeof(hex)))
484 3efd8e31 2022-10-23 thomas 		log_debug("client has %s", hex);
485 3efd8e31 2022-10-23 thomas 
486 9148c8a7 2023-01-02 thomas 	imsg_init(&ibuf, client->fd);
487 3efd8e31 2022-10-23 thomas 
488 3efd8e31 2022-10-23 thomas 	err = got_object_get_type(&obj_type, repo_read.repo, &id);
489 3efd8e31 2022-10-23 thomas 	if (err) {
490 3efd8e31 2022-10-23 thomas 		if (err->code == GOT_ERR_NO_OBJ) {
491 3efd8e31 2022-10-23 thomas 			gotd_imsg_send_nak(&id, &ibuf,
492 3efd8e31 2022-10-23 thomas 			    PROC_REPO_READ, repo_read.pid);
493 3efd8e31 2022-10-23 thomas 			err = NULL;
494 3efd8e31 2022-10-23 thomas 		}
495 3efd8e31 2022-10-23 thomas 		goto done;
496 3efd8e31 2022-10-23 thomas 	}
497 3efd8e31 2022-10-23 thomas 
498 3efd8e31 2022-10-23 thomas 	if (obj_type != GOT_OBJ_TYPE_COMMIT &&
499 3efd8e31 2022-10-23 thomas 	    obj_type != GOT_OBJ_TYPE_TAG) {
500 3efd8e31 2022-10-23 thomas 		gotd_imsg_send_nak(&id, &ibuf, PROC_REPO_READ, repo_read.pid);
501 3efd8e31 2022-10-23 thomas 		err = got_error(GOT_ERR_OBJ_TYPE);
502 3efd8e31 2022-10-23 thomas 		goto done;
503 3efd8e31 2022-10-23 thomas 	}
504 3efd8e31 2022-10-23 thomas 
505 9148c8a7 2023-01-02 thomas 	err = record_object_id(&client->have_ids, &id);
506 3efd8e31 2022-10-23 thomas 	if (err)
507 3efd8e31 2022-10-23 thomas 		return err;
508 3efd8e31 2022-10-23 thomas 
509 3efd8e31 2022-10-23 thomas 	gotd_imsg_send_ack(&id, &ibuf, PROC_REPO_READ, repo_read.pid);
510 3efd8e31 2022-10-23 thomas done:
511 3efd8e31 2022-10-23 thomas 	imsg_clear(&ibuf);
512 3efd8e31 2022-10-23 thomas 	return err;
513 3efd8e31 2022-10-23 thomas }
514 3efd8e31 2022-10-23 thomas 
515 3efd8e31 2022-10-23 thomas struct repo_read_pack_progress_arg {
516 3efd8e31 2022-10-23 thomas 	int report_progress;
517 3efd8e31 2022-10-23 thomas 	struct imsgbuf *ibuf;
518 3efd8e31 2022-10-23 thomas 	int sent_ready;
519 3efd8e31 2022-10-23 thomas };
520 3efd8e31 2022-10-23 thomas 
521 3efd8e31 2022-10-23 thomas static const struct got_error *
522 3efd8e31 2022-10-23 thomas pack_progress(void *arg, int ncolored, int nfound, int ntrees,
523 3efd8e31 2022-10-23 thomas     off_t packfile_size, int ncommits, int nobj_total, int nobj_deltify,
524 3efd8e31 2022-10-23 thomas     int nobj_written)
525 3efd8e31 2022-10-23 thomas {
526 3efd8e31 2022-10-23 thomas 	struct repo_read_pack_progress_arg *a = arg;
527 3efd8e31 2022-10-23 thomas 	struct gotd_imsg_packfile_progress iprog;
528 3efd8e31 2022-10-23 thomas 	int ret;
529 3efd8e31 2022-10-23 thomas 
530 3efd8e31 2022-10-23 thomas 	if (!a->report_progress)
531 3efd8e31 2022-10-23 thomas 		return NULL;
532 3efd8e31 2022-10-23 thomas 	if (packfile_size > 0 && a->sent_ready)
533 3efd8e31 2022-10-23 thomas 		return NULL;
534 3efd8e31 2022-10-23 thomas 
535 3efd8e31 2022-10-23 thomas 	memset(&iprog, 0, sizeof(iprog));
536 3efd8e31 2022-10-23 thomas 	iprog.ncolored = ncolored;
537 3efd8e31 2022-10-23 thomas 	iprog.nfound = nfound;
538 3efd8e31 2022-10-23 thomas 	iprog.ntrees = ntrees;
539 3efd8e31 2022-10-23 thomas 	iprog.packfile_size = packfile_size;
540 3efd8e31 2022-10-23 thomas 	iprog.ncommits = ncommits;
541 3efd8e31 2022-10-23 thomas 	iprog.nobj_total = nobj_total;
542 3efd8e31 2022-10-23 thomas 	iprog.nobj_deltify = nobj_deltify;
543 3efd8e31 2022-10-23 thomas 	iprog.nobj_written = nobj_written;
544 3efd8e31 2022-10-23 thomas 
545 3efd8e31 2022-10-23 thomas 	/* Using synchronous writes since we are blocking the event loop. */
546 3efd8e31 2022-10-23 thomas 	if (packfile_size == 0) {
547 3efd8e31 2022-10-23 thomas 		ret = imsg_compose(a->ibuf, GOTD_IMSG_PACKFILE_PROGRESS,
548 3efd8e31 2022-10-23 thomas 		    PROC_REPO_READ, repo_read.pid, -1, &iprog, sizeof(iprog));
549 3efd8e31 2022-10-23 thomas 		if (ret == -1) {
550 3efd8e31 2022-10-23 thomas 			return got_error_from_errno("imsg compose "
551 3efd8e31 2022-10-23 thomas 			    "PACKFILE_PROGRESS");
552 8652e561 2023-01-14 thomas 		}
553 3efd8e31 2022-10-23 thomas 	} else {
554 3efd8e31 2022-10-23 thomas 		a->sent_ready = 1;
555 3efd8e31 2022-10-23 thomas 		ret = imsg_compose(a->ibuf, GOTD_IMSG_PACKFILE_READY,
556 3efd8e31 2022-10-23 thomas 		    PROC_REPO_READ, repo_read.pid, -1, &iprog, sizeof(iprog));
557 3efd8e31 2022-10-23 thomas 		if (ret == -1) {
558 3efd8e31 2022-10-23 thomas 			return got_error_from_errno("imsg compose "
559 3efd8e31 2022-10-23 thomas 			    "PACKFILE_READY");
560 3efd8e31 2022-10-23 thomas 		}
561 3efd8e31 2022-10-23 thomas 	}
562 3efd8e31 2022-10-23 thomas 
563 3efd8e31 2022-10-23 thomas 	return gotd_imsg_flush(a->ibuf);
564 3efd8e31 2022-10-23 thomas }
565 3efd8e31 2022-10-23 thomas 
566 3efd8e31 2022-10-23 thomas static const struct got_error *
567 9148c8a7 2023-01-02 thomas receive_delta_cache_fd(struct imsg *imsg,
568 3efd8e31 2022-10-23 thomas     struct gotd_imsgev *iev)
569 3efd8e31 2022-10-23 thomas {
570 9148c8a7 2023-01-02 thomas 	struct repo_read_client *client = &repo_read_client;
571 3efd8e31 2022-10-23 thomas 	struct gotd_imsg_send_packfile ireq;
572 3efd8e31 2022-10-23 thomas 	size_t datalen;
573 3efd8e31 2022-10-23 thomas 
574 3efd8e31 2022-10-23 thomas 	log_debug("receving delta cache file");
575 3efd8e31 2022-10-23 thomas 
576 3efd8e31 2022-10-23 thomas 	if (imsg->fd == -1)
577 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
578 3efd8e31 2022-10-23 thomas 
579 3efd8e31 2022-10-23 thomas 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
580 3efd8e31 2022-10-23 thomas 	if (datalen != sizeof(ireq))
581 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_LEN);
582 3efd8e31 2022-10-23 thomas 	memcpy(&ireq, imsg->data, sizeof(ireq));
583 3efd8e31 2022-10-23 thomas 
584 9148c8a7 2023-01-02 thomas 	if (client->delta_cache_fd != -1)
585 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_MSG);
586 3efd8e31 2022-10-23 thomas 
587 9148c8a7 2023-01-02 thomas 	client->delta_cache_fd = imsg->fd;
588 9148c8a7 2023-01-02 thomas 	client->report_progress = ireq.report_progress;
589 3efd8e31 2022-10-23 thomas 	return NULL;
590 3efd8e31 2022-10-23 thomas }
591 3efd8e31 2022-10-23 thomas 
592 3efd8e31 2022-10-23 thomas static const struct got_error *
593 9148c8a7 2023-01-02 thomas receive_pack_pipe(struct imsg *imsg, struct gotd_imsgev *iev)
594 3efd8e31 2022-10-23 thomas {
595 9148c8a7 2023-01-02 thomas 	struct repo_read_client *client = &repo_read_client;
596 3efd8e31 2022-10-23 thomas 	struct gotd_imsg_packfile_pipe ireq;
597 3efd8e31 2022-10-23 thomas 	size_t datalen;
598 3efd8e31 2022-10-23 thomas 
599 3efd8e31 2022-10-23 thomas 	log_debug("receving pack pipe descriptor");
600 3efd8e31 2022-10-23 thomas 
601 3efd8e31 2022-10-23 thomas 	if (imsg->fd == -1)
602 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
603 3efd8e31 2022-10-23 thomas 
604 3efd8e31 2022-10-23 thomas 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
605 3efd8e31 2022-10-23 thomas 	if (datalen != sizeof(ireq))
606 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_LEN);
607 3efd8e31 2022-10-23 thomas 	memcpy(&ireq, imsg->data, sizeof(ireq));
608 3efd8e31 2022-10-23 thomas 
609 9148c8a7 2023-01-02 thomas 	if (client->pack_pipe != -1)
610 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_MSG);
611 3efd8e31 2022-10-23 thomas 
612 9148c8a7 2023-01-02 thomas 	client->pack_pipe = imsg->fd;
613 3efd8e31 2022-10-23 thomas 	return NULL;
614 3efd8e31 2022-10-23 thomas }
615 3efd8e31 2022-10-23 thomas 
616 3efd8e31 2022-10-23 thomas static const struct got_error *
617 9148c8a7 2023-01-02 thomas send_packfile(struct imsg *imsg, struct gotd_imsgev *iev)
618 3efd8e31 2022-10-23 thomas {
619 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
620 9148c8a7 2023-01-02 thomas 	struct repo_read_client *client = &repo_read_client;
621 3efd8e31 2022-10-23 thomas 	struct gotd_imsg_packfile_done idone;
622 3efd8e31 2022-10-23 thomas 	uint8_t packsha1[SHA1_DIGEST_LENGTH];
623 3efd8e31 2022-10-23 thomas 	char hex[SHA1_DIGEST_STRING_LENGTH];
624 3efd8e31 2022-10-23 thomas 	FILE *delta_cache = NULL;
625 3efd8e31 2022-10-23 thomas 	struct imsgbuf ibuf;
626 3efd8e31 2022-10-23 thomas 	struct repo_read_pack_progress_arg pa;
627 3efd8e31 2022-10-23 thomas 	struct got_ratelimit rl;
628 3efd8e31 2022-10-23 thomas 
629 3efd8e31 2022-10-23 thomas 	log_debug("packfile request received");
630 3efd8e31 2022-10-23 thomas 
631 3efd8e31 2022-10-23 thomas 	got_ratelimit_init(&rl, 2, 0);
632 3efd8e31 2022-10-23 thomas 
633 cc4cc677 2022-10-28 thomas 	if (client->delta_cache_fd == -1 || client->pack_pipe == -1)
634 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
635 3efd8e31 2022-10-23 thomas 
636 3efd8e31 2022-10-23 thomas 	imsg_init(&ibuf, client->fd);
637 3efd8e31 2022-10-23 thomas 
638 3efd8e31 2022-10-23 thomas 	delta_cache = fdopen(client->delta_cache_fd, "w+");
639 3efd8e31 2022-10-23 thomas 	if (delta_cache == NULL) {
640 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fdopen");
641 3efd8e31 2022-10-23 thomas 		goto done;
642 3efd8e31 2022-10-23 thomas 	}
643 3efd8e31 2022-10-23 thomas 	client->delta_cache_fd = -1;
644 3efd8e31 2022-10-23 thomas 
645 3efd8e31 2022-10-23 thomas 	memset(&pa, 0, sizeof(pa));
646 3efd8e31 2022-10-23 thomas 	pa.ibuf = &ibuf;
647 3efd8e31 2022-10-23 thomas 	pa.report_progress = client->report_progress;
648 3efd8e31 2022-10-23 thomas 
649 cc4cc677 2022-10-28 thomas 	err = got_pack_create(packsha1, client->pack_pipe, delta_cache,
650 3efd8e31 2022-10-23 thomas 	    client->have_ids.ids, client->have_ids.nids,
651 3efd8e31 2022-10-23 thomas 	    client->want_ids.ids, client->want_ids.nids,
652 3efd8e31 2022-10-23 thomas 	    repo_read.repo, 0, 1, pack_progress, &pa, &rl,
653 3efd8e31 2022-10-23 thomas 	    check_cancelled, NULL);
654 3efd8e31 2022-10-23 thomas 	if (err)
655 3efd8e31 2022-10-23 thomas 		goto done;
656 8652e561 2023-01-14 thomas 
657 3efd8e31 2022-10-23 thomas 	if (log_getverbose() > 0 &&
658 3efd8e31 2022-10-23 thomas 	    got_sha1_digest_to_str(packsha1, hex, sizeof(hex)))
659 3efd8e31 2022-10-23 thomas 		log_debug("sent pack-%s.pack", hex);
660 3efd8e31 2022-10-23 thomas 
661 3efd8e31 2022-10-23 thomas 	memset(&idone, 0, sizeof(idone));
662 3efd8e31 2022-10-23 thomas 	idone.client_id = client->id;
663 3efd8e31 2022-10-23 thomas 	if (gotd_imsg_compose_event(iev, GOTD_IMSG_PACKFILE_DONE,
664 3efd8e31 2022-10-23 thomas 	    PROC_REPO_READ, -1, &idone, sizeof(idone)) == -1)
665 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("imsg compose PACKFILE_DONE");
666 3efd8e31 2022-10-23 thomas done:
667 3efd8e31 2022-10-23 thomas 	if (delta_cache != NULL && fclose(delta_cache) == EOF && err == NULL)
668 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("fclose");
669 3efd8e31 2022-10-23 thomas 	imsg_clear(&ibuf);
670 3efd8e31 2022-10-23 thomas 	return err;
671 3efd8e31 2022-10-23 thomas }
672 3efd8e31 2022-10-23 thomas 
673 3efd8e31 2022-10-23 thomas static const struct got_error *
674 3efd8e31 2022-10-23 thomas recv_disconnect(struct imsg *imsg)
675 3efd8e31 2022-10-23 thomas {
676 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
677 3efd8e31 2022-10-23 thomas 	struct gotd_imsg_disconnect idisconnect;
678 3efd8e31 2022-10-23 thomas 	size_t datalen;
679 9148c8a7 2023-01-02 thomas 	int delta_cache_fd, pack_pipe;
680 9148c8a7 2023-01-02 thomas 	struct repo_read_client *client = &repo_read_client;
681 3efd8e31 2022-10-23 thomas 
682 3efd8e31 2022-10-23 thomas 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
683 3efd8e31 2022-10-23 thomas 	if (datalen != sizeof(idisconnect))
684 3efd8e31 2022-10-23 thomas 		return got_error(GOT_ERR_PRIVSEP_LEN);
685 3efd8e31 2022-10-23 thomas 	memcpy(&idisconnect, imsg->data, sizeof(idisconnect));
686 3efd8e31 2022-10-23 thomas 
687 3efd8e31 2022-10-23 thomas 	log_debug("client disconnecting");
688 3efd8e31 2022-10-23 thomas 
689 3efd8e31 2022-10-23 thomas 	free_object_ids(&client->have_ids);
690 3efd8e31 2022-10-23 thomas 	free_object_ids(&client->want_ids);
691 9148c8a7 2023-01-02 thomas 	if (close(client->fd) == -1)
692 3efd8e31 2022-10-23 thomas 		err = got_error_from_errno("close");
693 9148c8a7 2023-01-02 thomas 	delta_cache_fd = client->delta_cache_fd;
694 3efd8e31 2022-10-23 thomas 	if (delta_cache_fd != -1 && close(delta_cache_fd) == -1 && err == NULL)
695 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("close");
696 9148c8a7 2023-01-02 thomas 	pack_pipe = client->pack_pipe;
697 cc4cc677 2022-10-28 thomas 	if (pack_pipe != -1 && close(pack_pipe) == -1 && err == NULL)
698 3efd8e31 2022-10-23 thomas 		return got_error_from_errno("close");
699 3efd8e31 2022-10-23 thomas 	return err;
700 3efd8e31 2022-10-23 thomas }
701 3efd8e31 2022-10-23 thomas 
702 3efd8e31 2022-10-23 thomas static void
703 62ee7d94 2023-01-10 thomas repo_read_dispatch_session(int fd, short event, void *arg)
704 3efd8e31 2022-10-23 thomas {
705 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
706 3efd8e31 2022-10-23 thomas 	struct gotd_imsgev *iev = arg;
707 3efd8e31 2022-10-23 thomas 	struct imsgbuf *ibuf = &iev->ibuf;
708 3efd8e31 2022-10-23 thomas 	struct imsg imsg;
709 3efd8e31 2022-10-23 thomas 	ssize_t n;
710 3efd8e31 2022-10-23 thomas 	int shut = 0;
711 9148c8a7 2023-01-02 thomas 	struct repo_read_client *client = &repo_read_client;
712 3efd8e31 2022-10-23 thomas 
713 3efd8e31 2022-10-23 thomas 	if (event & EV_READ) {
714 3efd8e31 2022-10-23 thomas 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
715 3efd8e31 2022-10-23 thomas 			fatal("imsg_read error");
716 3efd8e31 2022-10-23 thomas 		if (n == 0)	/* Connection closed. */
717 3efd8e31 2022-10-23 thomas 			shut = 1;
718 3efd8e31 2022-10-23 thomas 	}
719 3efd8e31 2022-10-23 thomas 
720 3efd8e31 2022-10-23 thomas 	if (event & EV_WRITE) {
721 3efd8e31 2022-10-23 thomas 		n = msgbuf_write(&ibuf->w);
722 3efd8e31 2022-10-23 thomas 		if (n == -1 && errno != EAGAIN)
723 3efd8e31 2022-10-23 thomas 			fatal("msgbuf_write");
724 3efd8e31 2022-10-23 thomas 		if (n == 0)	/* Connection closed. */
725 3efd8e31 2022-10-23 thomas 			shut = 1;
726 3efd8e31 2022-10-23 thomas 	}
727 3efd8e31 2022-10-23 thomas 
728 3efd8e31 2022-10-23 thomas 	while (err == NULL && check_cancelled(NULL) == NULL) {
729 3efd8e31 2022-10-23 thomas 		if ((n = imsg_get(ibuf, &imsg)) == -1)
730 3efd8e31 2022-10-23 thomas 			fatal("%s: imsg_get", __func__);
731 3efd8e31 2022-10-23 thomas 		if (n == 0)	/* No more messages. */
732 3efd8e31 2022-10-23 thomas 			break;
733 3efd8e31 2022-10-23 thomas 
734 9148c8a7 2023-01-02 thomas 		if (imsg.hdr.type != GOTD_IMSG_LIST_REFS_INTERNAL &&
735 9148c8a7 2023-01-02 thomas 		    client->id == 0) {
736 9148c8a7 2023-01-02 thomas 			err = got_error(GOT_ERR_PRIVSEP_MSG);
737 9148c8a7 2023-01-02 thomas 			break;
738 9148c8a7 2023-01-02 thomas 		}
739 9148c8a7 2023-01-02 thomas 
740 3efd8e31 2022-10-23 thomas 		switch (imsg.hdr.type) {
741 3efd8e31 2022-10-23 thomas 		case GOTD_IMSG_LIST_REFS_INTERNAL:
742 9148c8a7 2023-01-02 thomas 			err = list_refs(&imsg);
743 3efd8e31 2022-10-23 thomas 			if (err)
744 3efd8e31 2022-10-23 thomas 				log_warnx("%s: ls-refs: %s", repo_read.title,
745 3efd8e31 2022-10-23 thomas 				    err->msg);
746 3efd8e31 2022-10-23 thomas 			break;
747 3efd8e31 2022-10-23 thomas 		case GOTD_IMSG_WANT:
748 9148c8a7 2023-01-02 thomas 			err = recv_want(&imsg);
749 3efd8e31 2022-10-23 thomas 			if (err)
750 3efd8e31 2022-10-23 thomas 				log_warnx("%s: want-line: %s", repo_read.title,
751 3efd8e31 2022-10-23 thomas 				    err->msg);
752 3efd8e31 2022-10-23 thomas 			break;
753 3efd8e31 2022-10-23 thomas 		case GOTD_IMSG_HAVE:
754 9148c8a7 2023-01-02 thomas 			err = recv_have(&imsg);
755 3efd8e31 2022-10-23 thomas 			if (err)
756 3efd8e31 2022-10-23 thomas 				log_warnx("%s: have-line: %s", repo_read.title,
757 3efd8e31 2022-10-23 thomas 				    err->msg);
758 3efd8e31 2022-10-23 thomas 			break;
759 3efd8e31 2022-10-23 thomas 		case GOTD_IMSG_SEND_PACKFILE:
760 9148c8a7 2023-01-02 thomas 			err = receive_delta_cache_fd(&imsg, iev);
761 3efd8e31 2022-10-23 thomas 			if (err)
762 3efd8e31 2022-10-23 thomas 				log_warnx("%s: receiving delta cache: %s",
763 3efd8e31 2022-10-23 thomas 				    repo_read.title, err->msg);
764 3efd8e31 2022-10-23 thomas 			break;
765 3efd8e31 2022-10-23 thomas 		case GOTD_IMSG_PACKFILE_PIPE:
766 9148c8a7 2023-01-02 thomas 			err = receive_pack_pipe(&imsg, iev);
767 3efd8e31 2022-10-23 thomas 			if (err) {
768 3efd8e31 2022-10-23 thomas 				log_warnx("%s: receiving pack pipe: %s",
769 3efd8e31 2022-10-23 thomas 				    repo_read.title, err->msg);
770 3efd8e31 2022-10-23 thomas 				break;
771 3efd8e31 2022-10-23 thomas 			}
772 9148c8a7 2023-01-02 thomas 			err = send_packfile(&imsg, iev);
773 3efd8e31 2022-10-23 thomas 			if (err)
774 3efd8e31 2022-10-23 thomas 				log_warnx("%s: sending packfile: %s",
775 3efd8e31 2022-10-23 thomas 				    repo_read.title, err->msg);
776 3efd8e31 2022-10-23 thomas 			break;
777 3efd8e31 2022-10-23 thomas 		case GOTD_IMSG_DISCONNECT:
778 3efd8e31 2022-10-23 thomas 			err = recv_disconnect(&imsg);
779 3efd8e31 2022-10-23 thomas 			if (err)
780 3efd8e31 2022-10-23 thomas 				log_warnx("%s: disconnect: %s",
781 3efd8e31 2022-10-23 thomas 				    repo_read.title, err->msg);
782 62ee7d94 2023-01-10 thomas 			shut = 1;
783 62ee7d94 2023-01-10 thomas 			break;
784 62ee7d94 2023-01-10 thomas 		default:
785 62ee7d94 2023-01-10 thomas 			log_debug("%s: unexpected imsg %d", repo_read.title,
786 62ee7d94 2023-01-10 thomas 			    imsg.hdr.type);
787 62ee7d94 2023-01-10 thomas 			break;
788 62ee7d94 2023-01-10 thomas 		}
789 62ee7d94 2023-01-10 thomas 
790 62ee7d94 2023-01-10 thomas 		imsg_free(&imsg);
791 62ee7d94 2023-01-10 thomas 	}
792 62ee7d94 2023-01-10 thomas 
793 62ee7d94 2023-01-10 thomas 	if (!shut && check_cancelled(NULL) == NULL) {
794 62ee7d94 2023-01-10 thomas 		if (err &&
795 62ee7d94 2023-01-10 thomas 		    gotd_imsg_send_error_event(iev, PROC_REPO_READ,
796 62ee7d94 2023-01-10 thomas 		        client->id, err) == -1) {
797 62ee7d94 2023-01-10 thomas 			log_warnx("could not send error to parent: %s",
798 62ee7d94 2023-01-10 thomas 			    err->msg);
799 62ee7d94 2023-01-10 thomas 		}
800 62ee7d94 2023-01-10 thomas 		gotd_imsg_event_add(iev);
801 62ee7d94 2023-01-10 thomas 	} else {
802 62ee7d94 2023-01-10 thomas 		/* This pipe is dead. Remove its event handler */
803 62ee7d94 2023-01-10 thomas 		event_del(&iev->ev);
804 62ee7d94 2023-01-10 thomas 		event_loopexit(NULL);
805 62ee7d94 2023-01-10 thomas 	}
806 62ee7d94 2023-01-10 thomas }
807 62ee7d94 2023-01-10 thomas 
808 62ee7d94 2023-01-10 thomas static const struct got_error *
809 62ee7d94 2023-01-10 thomas recv_connect(struct imsg *imsg)
810 62ee7d94 2023-01-10 thomas {
811 62ee7d94 2023-01-10 thomas 	struct gotd_imsgev *iev = &repo_read.session_iev;
812 62ee7d94 2023-01-10 thomas 	size_t datalen;
813 62ee7d94 2023-01-10 thomas 
814 62ee7d94 2023-01-10 thomas 	datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
815 62ee7d94 2023-01-10 thomas 	if (datalen != 0)
816 62ee7d94 2023-01-10 thomas 		return got_error(GOT_ERR_PRIVSEP_LEN);
817 62ee7d94 2023-01-10 thomas 	if (imsg->fd == -1)
818 62ee7d94 2023-01-10 thomas 		return got_error(GOT_ERR_PRIVSEP_NO_FD);
819 62ee7d94 2023-01-10 thomas 
820 62ee7d94 2023-01-10 thomas 	if (repo_read.session_fd != -1)
821 62ee7d94 2023-01-10 thomas 		return got_error(GOT_ERR_PRIVSEP_MSG);
822 62ee7d94 2023-01-10 thomas 
823 62ee7d94 2023-01-10 thomas 	repo_read.session_fd = imsg->fd;
824 62ee7d94 2023-01-10 thomas 
825 62ee7d94 2023-01-10 thomas 	imsg_init(&iev->ibuf, repo_read.session_fd);
826 62ee7d94 2023-01-10 thomas 	iev->handler = repo_read_dispatch_session;
827 62ee7d94 2023-01-10 thomas 	iev->events = EV_READ;
828 62ee7d94 2023-01-10 thomas 	iev->handler_arg = NULL;
829 62ee7d94 2023-01-10 thomas 	event_set(&iev->ev, iev->ibuf.fd, EV_READ,
830 62ee7d94 2023-01-10 thomas 	    repo_read_dispatch_session, iev);
831 62ee7d94 2023-01-10 thomas 	gotd_imsg_event_add(iev);
832 62ee7d94 2023-01-10 thomas 
833 62ee7d94 2023-01-10 thomas 	return NULL;
834 62ee7d94 2023-01-10 thomas }
835 62ee7d94 2023-01-10 thomas 
836 62ee7d94 2023-01-10 thomas static void
837 62ee7d94 2023-01-10 thomas repo_read_dispatch(int fd, short event, void *arg)
838 62ee7d94 2023-01-10 thomas {
839 62ee7d94 2023-01-10 thomas 	const struct got_error *err = NULL;
840 62ee7d94 2023-01-10 thomas 	struct gotd_imsgev *iev = arg;
841 62ee7d94 2023-01-10 thomas 	struct imsgbuf *ibuf = &iev->ibuf;
842 62ee7d94 2023-01-10 thomas 	struct imsg imsg;
843 62ee7d94 2023-01-10 thomas 	ssize_t n;
844 62ee7d94 2023-01-10 thomas 	int shut = 0;
845 62ee7d94 2023-01-10 thomas 	struct repo_read_client *client = &repo_read_client;
846 62ee7d94 2023-01-10 thomas 
847 62ee7d94 2023-01-10 thomas 	if (event & EV_READ) {
848 62ee7d94 2023-01-10 thomas 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
849 62ee7d94 2023-01-10 thomas 			fatal("imsg_read error");
850 62ee7d94 2023-01-10 thomas 		if (n == 0)	/* Connection closed. */
851 9148c8a7 2023-01-02 thomas 			shut = 1;
852 62ee7d94 2023-01-10 thomas 	}
853 62ee7d94 2023-01-10 thomas 
854 62ee7d94 2023-01-10 thomas 	if (event & EV_WRITE) {
855 62ee7d94 2023-01-10 thomas 		n = msgbuf_write(&ibuf->w);
856 62ee7d94 2023-01-10 thomas 		if (n == -1 && errno != EAGAIN)
857 62ee7d94 2023-01-10 thomas 			fatal("msgbuf_write");
858 62ee7d94 2023-01-10 thomas 		if (n == 0)	/* Connection closed. */
859 62ee7d94 2023-01-10 thomas 			shut = 1;
860 62ee7d94 2023-01-10 thomas 	}
861 62ee7d94 2023-01-10 thomas 
862 62ee7d94 2023-01-10 thomas 	while (err == NULL && check_cancelled(NULL) == NULL) {
863 62ee7d94 2023-01-10 thomas 		if ((n = imsg_get(ibuf, &imsg)) == -1)
864 62ee7d94 2023-01-10 thomas 			fatal("%s: imsg_get", __func__);
865 62ee7d94 2023-01-10 thomas 		if (n == 0)	/* No more messages. */
866 3efd8e31 2022-10-23 thomas 			break;
867 62ee7d94 2023-01-10 thomas 
868 62ee7d94 2023-01-10 thomas 		switch (imsg.hdr.type) {
869 62ee7d94 2023-01-10 thomas 		case GOTD_IMSG_CONNECT_REPO_CHILD:
870 62ee7d94 2023-01-10 thomas 			err = recv_connect(&imsg);
871 62ee7d94 2023-01-10 thomas 			break;
872 3efd8e31 2022-10-23 thomas 		default:
873 3efd8e31 2022-10-23 thomas 			log_debug("%s: unexpected imsg %d", repo_read.title,
874 3efd8e31 2022-10-23 thomas 			    imsg.hdr.type);
875 3efd8e31 2022-10-23 thomas 			break;
876 3efd8e31 2022-10-23 thomas 		}
877 3efd8e31 2022-10-23 thomas 
878 3efd8e31 2022-10-23 thomas 		imsg_free(&imsg);
879 3efd8e31 2022-10-23 thomas 	}
880 3efd8e31 2022-10-23 thomas 
881 3efd8e31 2022-10-23 thomas 	if (!shut && check_cancelled(NULL) == NULL) {
882 3efd8e31 2022-10-23 thomas 		if (err &&
883 3efd8e31 2022-10-23 thomas 		    gotd_imsg_send_error_event(iev, PROC_REPO_READ,
884 9148c8a7 2023-01-02 thomas 		        client->id, err) == -1) {
885 3efd8e31 2022-10-23 thomas 			log_warnx("could not send error to parent: %s",
886 3efd8e31 2022-10-23 thomas 			    err->msg);
887 3efd8e31 2022-10-23 thomas 		}
888 3efd8e31 2022-10-23 thomas 		gotd_imsg_event_add(iev);
889 3efd8e31 2022-10-23 thomas 	} else {
890 3efd8e31 2022-10-23 thomas 		/* This pipe is dead. Remove its event handler */
891 3efd8e31 2022-10-23 thomas 		event_del(&iev->ev);
892 3efd8e31 2022-10-23 thomas 		event_loopexit(NULL);
893 3efd8e31 2022-10-23 thomas 	}
894 3efd8e31 2022-10-23 thomas }
895 3efd8e31 2022-10-23 thomas 
896 3efd8e31 2022-10-23 thomas void
897 414e37cb 2022-12-30 thomas repo_read_main(const char *title, const char *repo_path,
898 414e37cb 2022-12-30 thomas     int *pack_fds, int *temp_fds)
899 3efd8e31 2022-10-23 thomas {
900 3efd8e31 2022-10-23 thomas 	const struct got_error *err = NULL;
901 3efd8e31 2022-10-23 thomas 	struct gotd_imsgev iev;
902 3efd8e31 2022-10-23 thomas 
903 3efd8e31 2022-10-23 thomas 	repo_read.title = title;
904 3efd8e31 2022-10-23 thomas 	repo_read.pid = getpid();
905 3efd8e31 2022-10-23 thomas 	repo_read.pack_fds = pack_fds;
906 3efd8e31 2022-10-23 thomas 	repo_read.temp_fds = temp_fds;
907 62ee7d94 2023-01-10 thomas 	repo_read.session_fd = -1;
908 62ee7d94 2023-01-10 thomas 	repo_read.session_iev.ibuf.fd = -1;
909 3efd8e31 2022-10-23 thomas 
910 414e37cb 2022-12-30 thomas 	err = got_repo_open(&repo_read.repo, repo_path, NULL, pack_fds);
911 3efd8e31 2022-10-23 thomas 	if (err)
912 3efd8e31 2022-10-23 thomas 		goto done;
913 3efd8e31 2022-10-23 thomas 	if (!got_repo_is_bare(repo_read.repo)) {
914 3efd8e31 2022-10-23 thomas 		err = got_error_msg(GOT_ERR_NOT_GIT_REPO,
915 3efd8e31 2022-10-23 thomas 		    "bare git repository required");
916 3efd8e31 2022-10-23 thomas 		goto done;
917 3efd8e31 2022-10-23 thomas 	}
918 3efd8e31 2022-10-23 thomas 
919 3efd8e31 2022-10-23 thomas 	got_repo_temp_fds_set(repo_read.repo, temp_fds);
920 3efd8e31 2022-10-23 thomas 
921 3efd8e31 2022-10-23 thomas 	signal(SIGINT, catch_sigint);
922 3efd8e31 2022-10-23 thomas 	signal(SIGTERM, catch_sigterm);
923 3efd8e31 2022-10-23 thomas 	signal(SIGPIPE, SIG_IGN);
924 3efd8e31 2022-10-23 thomas 	signal(SIGHUP, SIG_IGN);
925 3efd8e31 2022-10-23 thomas 
926 bb3a6ce9 2022-11-17 thomas 	imsg_init(&iev.ibuf, GOTD_FILENO_MSG_PIPE);
927 3efd8e31 2022-10-23 thomas 	iev.handler = repo_read_dispatch;
928 3efd8e31 2022-10-23 thomas 	iev.events = EV_READ;
929 3efd8e31 2022-10-23 thomas 	iev.handler_arg = NULL;
930 3efd8e31 2022-10-23 thomas 	event_set(&iev.ev, iev.ibuf.fd, EV_READ, repo_read_dispatch, &iev);
931 85b37c72 2022-12-30 thomas 
932 85b37c72 2022-12-30 thomas 	if (gotd_imsg_compose_event(&iev, GOTD_IMSG_REPO_CHILD_READY,
933 85b37c72 2022-12-30 thomas 	    PROC_REPO_READ, -1, NULL, 0) == -1) {
934 85b37c72 2022-12-30 thomas 		err = got_error_from_errno("imsg compose REPO_CHILD_READY");
935 3efd8e31 2022-10-23 thomas 		goto done;
936 3efd8e31 2022-10-23 thomas 	}
937 3efd8e31 2022-10-23 thomas 
938 3efd8e31 2022-10-23 thomas 	event_dispatch();
939 3efd8e31 2022-10-23 thomas done:
940 3efd8e31 2022-10-23 thomas 	if (err)
941 3efd8e31 2022-10-23 thomas 		log_warnx("%s: %s", title, err->msg);
942 3efd8e31 2022-10-23 thomas 	repo_read_shutdown();
943 3efd8e31 2022-10-23 thomas }
944 3efd8e31 2022-10-23 thomas 
945 3efd8e31 2022-10-23 thomas void
946 3efd8e31 2022-10-23 thomas repo_read_shutdown(void)
947 3efd8e31 2022-10-23 thomas {
948 3efd8e31 2022-10-23 thomas 	log_debug("%s: shutting down", repo_read.title);
949 3efd8e31 2022-10-23 thomas 	if (repo_read.repo)
950 3efd8e31 2022-10-23 thomas 		got_repo_close(repo_read.repo);
951 3efd8e31 2022-10-23 thomas 	got_repo_pack_fds_close(repo_read.pack_fds);
952 3efd8e31 2022-10-23 thomas 	got_repo_temp_fds_close(repo_read.temp_fds);
953 62ee7d94 2023-01-10 thomas 	if (repo_read.session_fd != -1)
954 62ee7d94 2023-01-10 thomas 		close(repo_read.session_fd);
955 3efd8e31 2022-10-23 thomas 	exit(0);
956 3efd8e31 2022-10-23 thomas }