2 13b2bc37 2022-10-23 stsp * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
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.
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.
17 13b2bc37 2022-10-23 stsp #include <sys/queue.h>
18 13b2bc37 2022-10-23 stsp #include <sys/stat.h>
19 13b2bc37 2022-10-23 stsp #include <sys/tree.h>
20 13b2bc37 2022-10-23 stsp #include <sys/types.h>
22 13b2bc37 2022-10-23 stsp #include <event.h>
23 13b2bc37 2022-10-23 stsp #include <errno.h>
24 13b2bc37 2022-10-23 stsp #include <imsg.h>
25 13b2bc37 2022-10-23 stsp #include <signal.h>
26 13b2bc37 2022-10-23 stsp #include <siphash.h>
27 13b2bc37 2022-10-23 stsp #include <stdio.h>
28 13b2bc37 2022-10-23 stsp #include <stdlib.h>
29 13b2bc37 2022-10-23 stsp #include <string.h>
30 13b2bc37 2022-10-23 stsp #include <limits.h>
31 13b2bc37 2022-10-23 stsp #include <poll.h>
32 13b2bc37 2022-10-23 stsp #include <sha1.h>
33 13b2bc37 2022-10-23 stsp #include <unistd.h>
34 13b2bc37 2022-10-23 stsp #include <zlib.h>
36 13b2bc37 2022-10-23 stsp #include "buf.h"
38 13b2bc37 2022-10-23 stsp #include "got_error.h"
39 13b2bc37 2022-10-23 stsp #include "got_repository.h"
40 13b2bc37 2022-10-23 stsp #include "got_object.h"
41 13b2bc37 2022-10-23 stsp #include "got_reference.h"
42 13b2bc37 2022-10-23 stsp #include "got_path.h"
44 13b2bc37 2022-10-23 stsp #include "got_lib_delta.h"
45 13b2bc37 2022-10-23 stsp #include "got_lib_delta_cache.h"
46 13b2bc37 2022-10-23 stsp #include "got_lib_object.h"
47 13b2bc37 2022-10-23 stsp #include "got_lib_object_cache.h"
48 13b2bc37 2022-10-23 stsp #include "got_lib_ratelimit.h"
49 13b2bc37 2022-10-23 stsp #include "got_lib_pack.h"
50 13b2bc37 2022-10-23 stsp #include "got_lib_pack_index.h"
51 13b2bc37 2022-10-23 stsp #include "got_lib_repository.h"
52 13b2bc37 2022-10-23 stsp #include "got_lib_poll.h"
54 13b2bc37 2022-10-23 stsp #include "got_lib_sha1.h" /* XXX temp include for debugging */
56 13b2bc37 2022-10-23 stsp #include "log.h"
57 13b2bc37 2022-10-23 stsp #include "gotd.h"
58 13b2bc37 2022-10-23 stsp #include "repo_write.h"
60 13b2bc37 2022-10-23 stsp #ifndef nitems
61 13b2bc37 2022-10-23 stsp #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
64 13b2bc37 2022-10-23 stsp static struct repo_write {
66 13b2bc37 2022-10-23 stsp const char *title;
67 13b2bc37 2022-10-23 stsp struct got_repository *repo;
68 13b2bc37 2022-10-23 stsp int *pack_fds;
69 13b2bc37 2022-10-23 stsp int *temp_fds;
70 13b2bc37 2022-10-23 stsp } repo_write;
72 13b2bc37 2022-10-23 stsp struct gotd_ref_update {
73 13b2bc37 2022-10-23 stsp STAILQ_ENTRY(gotd_ref_update) entry;
74 13b2bc37 2022-10-23 stsp struct got_reference *ref;
75 13b2bc37 2022-10-23 stsp int ref_is_new;
76 13b2bc37 2022-10-23 stsp struct got_object_id old_id;
77 13b2bc37 2022-10-23 stsp struct got_object_id new_id;
79 13b2bc37 2022-10-23 stsp STAILQ_HEAD(gotd_ref_updates, gotd_ref_update);
81 13b2bc37 2022-10-23 stsp struct repo_write_client {
82 13b2bc37 2022-10-23 stsp STAILQ_ENTRY(repo_write_client) entry;
83 13b2bc37 2022-10-23 stsp uint32_t id;
85 13b2bc37 2022-10-23 stsp int pack_pipe[2];
86 13b2bc37 2022-10-23 stsp struct got_pack pack;
87 13b2bc37 2022-10-23 stsp uint8_t pack_sha1[SHA1_DIGEST_LENGTH];
88 13b2bc37 2022-10-23 stsp int packidx_fd;
89 13b2bc37 2022-10-23 stsp struct gotd_ref_updates ref_updates;
90 13b2bc37 2022-10-23 stsp int nref_updates;
92 13b2bc37 2022-10-23 stsp STAILQ_HEAD(repo_write_clients, repo_write_client);
94 13b2bc37 2022-10-23 stsp static struct repo_write_clients repo_write_clients[GOTD_CLIENT_TABLE_SIZE];
95 13b2bc37 2022-10-23 stsp static SIPHASH_KEY clients_hash_key;
97 13b2bc37 2022-10-23 stsp static uint64_t
98 13b2bc37 2022-10-23 stsp client_hash(uint32_t client_id)
100 13b2bc37 2022-10-23 stsp return SipHash24(&clients_hash_key, &client_id, sizeof(client_id));
103 13b2bc37 2022-10-23 stsp static void
104 13b2bc37 2022-10-23 stsp add_client(struct repo_write_client *client, uint32_t client_id, int fd)
106 13b2bc37 2022-10-23 stsp uint64_t slot;
108 13b2bc37 2022-10-23 stsp client->id = client_id;
109 13b2bc37 2022-10-23 stsp client->fd = fd;
110 13b2bc37 2022-10-23 stsp client->pack_pipe[0] = -1;
111 13b2bc37 2022-10-23 stsp client->pack_pipe[1] = -1;
112 13b2bc37 2022-10-23 stsp client->packidx_fd = -1;
113 13b2bc37 2022-10-23 stsp STAILQ_INIT(&client->ref_updates);
114 13b2bc37 2022-10-23 stsp client->nref_updates = 0;
115 13b2bc37 2022-10-23 stsp slot = client_hash(client->id) % nitems(repo_write_clients);
116 13b2bc37 2022-10-23 stsp STAILQ_INSERT_HEAD(&repo_write_clients[slot], client, entry);
119 13b2bc37 2022-10-23 stsp static struct repo_write_client *
120 13b2bc37 2022-10-23 stsp find_client(uint32_t client_id)
122 13b2bc37 2022-10-23 stsp uint64_t slot;
123 13b2bc37 2022-10-23 stsp struct repo_write_client *c;
125 13b2bc37 2022-10-23 stsp slot = client_hash(client_id) % nitems(repo_write_clients);
126 13b2bc37 2022-10-23 stsp STAILQ_FOREACH(c, &repo_write_clients[slot], entry) {
127 13b2bc37 2022-10-23 stsp if (c->id == client_id)
131 13b2bc37 2022-10-23 stsp return NULL;
134 13b2bc37 2022-10-23 stsp static volatile sig_atomic_t sigint_received;
135 13b2bc37 2022-10-23 stsp static volatile sig_atomic_t sigterm_received;
137 13b2bc37 2022-10-23 stsp static void
138 13b2bc37 2022-10-23 stsp catch_sigint(int signo)
140 13b2bc37 2022-10-23 stsp sigint_received = 1;
143 13b2bc37 2022-10-23 stsp static void
144 13b2bc37 2022-10-23 stsp catch_sigterm(int signo)
146 13b2bc37 2022-10-23 stsp sigterm_received = 1;
149 13b2bc37 2022-10-23 stsp static const struct got_error *
150 13b2bc37 2022-10-23 stsp check_cancelled(void *arg)
152 13b2bc37 2022-10-23 stsp if (sigint_received || sigterm_received)
153 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_CANCELLED);
155 13b2bc37 2022-10-23 stsp return NULL;
158 13b2bc37 2022-10-23 stsp static const struct got_error *
159 13b2bc37 2022-10-23 stsp send_peeled_tag_ref(struct got_reference *ref, struct got_object *obj,
160 13b2bc37 2022-10-23 stsp struct imsgbuf *ibuf)
162 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
163 13b2bc37 2022-10-23 stsp struct got_tag_object *tag;
164 13b2bc37 2022-10-23 stsp size_t namelen, len;
165 13b2bc37 2022-10-23 stsp char *peeled_refname = NULL;
166 13b2bc37 2022-10-23 stsp struct got_object_id *id;
167 13b2bc37 2022-10-23 stsp struct ibuf *wbuf;
169 13b2bc37 2022-10-23 stsp err = got_object_tag_open(&tag, repo_write.repo, obj);
171 13b2bc37 2022-10-23 stsp return err;
173 13b2bc37 2022-10-23 stsp if (asprintf(&peeled_refname, "%s^{}", got_ref_get_name(ref)) == -1) {
174 13b2bc37 2022-10-23 stsp err = got_error_from_errno("asprintf");
178 13b2bc37 2022-10-23 stsp id = got_object_tag_get_object_id(tag);
179 13b2bc37 2022-10-23 stsp namelen = strlen(peeled_refname);
181 13b2bc37 2022-10-23 stsp len = sizeof(struct gotd_imsg_ref) + namelen;
182 13b2bc37 2022-10-23 stsp if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
183 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_NO_SPACE);
187 13b2bc37 2022-10-23 stsp wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
188 13b2bc37 2022-10-23 stsp repo_write.pid, len);
189 13b2bc37 2022-10-23 stsp if (wbuf == NULL) {
190 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg_create REF");
194 13b2bc37 2022-10-23 stsp /* Keep in sync with struct gotd_imsg_ref definition. */
195 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1) {
196 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg_add REF");
199 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1) {
200 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg_add REF");
203 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, peeled_refname, namelen) == -1) {
204 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg_add REF");
208 13b2bc37 2022-10-23 stsp wbuf->fd = -1;
209 13b2bc37 2022-10-23 stsp imsg_close(ibuf, wbuf);
211 13b2bc37 2022-10-23 stsp got_object_tag_close(tag);
212 13b2bc37 2022-10-23 stsp return err;
215 13b2bc37 2022-10-23 stsp static const struct got_error *
216 13b2bc37 2022-10-23 stsp send_ref(struct got_reference *ref, struct imsgbuf *ibuf)
218 13b2bc37 2022-10-23 stsp const struct got_error *err;
219 13b2bc37 2022-10-23 stsp const char *refname = got_ref_get_name(ref);
220 13b2bc37 2022-10-23 stsp size_t namelen;
221 13b2bc37 2022-10-23 stsp struct got_object_id *id = NULL;
222 13b2bc37 2022-10-23 stsp struct got_object *obj = NULL;
223 13b2bc37 2022-10-23 stsp size_t len;
224 13b2bc37 2022-10-23 stsp struct ibuf *wbuf;
226 13b2bc37 2022-10-23 stsp namelen = strlen(refname);
228 13b2bc37 2022-10-23 stsp len = sizeof(struct gotd_imsg_ref) + namelen;
229 13b2bc37 2022-10-23 stsp if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
230 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_NO_SPACE);
232 13b2bc37 2022-10-23 stsp err = got_ref_resolve(&id, repo_write.repo, ref);
234 13b2bc37 2022-10-23 stsp return err;
236 13b2bc37 2022-10-23 stsp wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
237 13b2bc37 2022-10-23 stsp repo_write.pid, len);
238 13b2bc37 2022-10-23 stsp if (wbuf == NULL) {
239 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg_create REF");
243 13b2bc37 2022-10-23 stsp /* Keep in sync with struct gotd_imsg_ref definition. */
244 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1)
245 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_add REF");
246 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1)
247 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_add REF");
248 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, refname, namelen) == -1)
249 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_add REF");
251 13b2bc37 2022-10-23 stsp wbuf->fd = -1;
252 13b2bc37 2022-10-23 stsp imsg_close(ibuf, wbuf);
254 13b2bc37 2022-10-23 stsp err = got_object_open(&obj, repo_write.repo, id);
257 13b2bc37 2022-10-23 stsp if (obj->type == GOT_OBJ_TYPE_TAG)
258 13b2bc37 2022-10-23 stsp err = send_peeled_tag_ref(ref, obj, ibuf);
261 13b2bc37 2022-10-23 stsp got_object_close(obj);
263 13b2bc37 2022-10-23 stsp return err;
266 13b2bc37 2022-10-23 stsp static const struct got_error *
267 13b2bc37 2022-10-23 stsp list_refs(struct repo_write_client **client, struct imsg *imsg)
269 13b2bc37 2022-10-23 stsp const struct got_error *err;
270 13b2bc37 2022-10-23 stsp struct got_reflist_head refs;
271 13b2bc37 2022-10-23 stsp struct got_reflist_entry *re;
272 13b2bc37 2022-10-23 stsp struct gotd_imsg_list_refs_internal ireq;
273 13b2bc37 2022-10-23 stsp size_t datalen;
274 13b2bc37 2022-10-23 stsp struct gotd_imsg_reflist irefs;
275 13b2bc37 2022-10-23 stsp struct imsgbuf ibuf;
276 13b2bc37 2022-10-23 stsp int client_fd = imsg->fd;
278 13b2bc37 2022-10-23 stsp TAILQ_INIT(&refs);
280 13b2bc37 2022-10-23 stsp if (client_fd == -1)
281 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_NO_FD);
283 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
284 13b2bc37 2022-10-23 stsp if (datalen != sizeof(ireq))
285 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
286 13b2bc37 2022-10-23 stsp memcpy(&ireq, imsg->data, sizeof(ireq));
288 13b2bc37 2022-10-23 stsp *client = find_client(ireq.client_id);
289 13b2bc37 2022-10-23 stsp if (*client)
290 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_CLIENT_ID, "duplicate client ID");
292 13b2bc37 2022-10-23 stsp *client = calloc(1, sizeof(**client));
293 13b2bc37 2022-10-23 stsp if (*client == NULL)
294 13b2bc37 2022-10-23 stsp return got_error_from_errno("calloc");
295 13b2bc37 2022-10-23 stsp add_client(*client, ireq.client_id, client_fd);
297 13b2bc37 2022-10-23 stsp imsg_init(&ibuf, client_fd);
299 13b2bc37 2022-10-23 stsp err = got_ref_list(&refs, repo_write.repo, "",
300 13b2bc37 2022-10-23 stsp got_ref_cmp_by_name, NULL);
302 13b2bc37 2022-10-23 stsp return err;
304 13b2bc37 2022-10-23 stsp memset(&irefs, 0, sizeof(irefs));
305 13b2bc37 2022-10-23 stsp TAILQ_FOREACH(re, &refs, entry) {
306 13b2bc37 2022-10-23 stsp struct got_object_id *id;
307 13b2bc37 2022-10-23 stsp int obj_type;
309 13b2bc37 2022-10-23 stsp if (got_ref_is_symbolic(re->ref))
312 13b2bc37 2022-10-23 stsp irefs.nrefs++;
314 13b2bc37 2022-10-23 stsp /* Account for a peeled tag refs. */
315 13b2bc37 2022-10-23 stsp err = got_ref_resolve(&id, repo_write.repo, re->ref);
318 13b2bc37 2022-10-23 stsp err = got_object_get_type(&obj_type, repo_write.repo, id);
322 13b2bc37 2022-10-23 stsp if (obj_type == GOT_OBJ_TYPE_TAG)
323 13b2bc37 2022-10-23 stsp irefs.nrefs++;
326 13b2bc37 2022-10-23 stsp if (imsg_compose(&ibuf, GOTD_IMSG_REFLIST, PROC_REPO_WRITE,
327 13b2bc37 2022-10-23 stsp repo_write.pid, -1, &irefs, sizeof(irefs)) == -1) {
328 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg_compose REFLIST");
332 13b2bc37 2022-10-23 stsp TAILQ_FOREACH(re, &refs, entry) {
333 13b2bc37 2022-10-23 stsp if (got_ref_is_symbolic(re->ref))
335 13b2bc37 2022-10-23 stsp err = send_ref(re->ref, &ibuf);
340 13b2bc37 2022-10-23 stsp err = gotd_imsg_flush(&ibuf);
342 13b2bc37 2022-10-23 stsp got_ref_list_free(&refs);
343 13b2bc37 2022-10-23 stsp imsg_clear(&ibuf);
344 13b2bc37 2022-10-23 stsp return err;
347 13b2bc37 2022-10-23 stsp static const struct got_error *
348 13b2bc37 2022-10-23 stsp protect_ref_namespace(struct got_reference *ref, const char *namespace)
350 13b2bc37 2022-10-23 stsp size_t len = strlen(namespace);
352 13b2bc37 2022-10-23 stsp if (len < 5 || strncmp("refs/", namespace, 5) != 0 ||
353 13b2bc37 2022-10-23 stsp namespace[len -1] != '/') {
354 13b2bc37 2022-10-23 stsp return got_error_fmt(GOT_ERR_BAD_REF_NAME,
355 13b2bc37 2022-10-23 stsp "reference namespace '%s'", namespace);
358 13b2bc37 2022-10-23 stsp if (strncmp(namespace, got_ref_get_name(ref), len) == 0)
359 13b2bc37 2022-10-23 stsp return got_error_fmt(GOT_ERR_REFS_PROTECTED, "%s", namespace);
361 13b2bc37 2022-10-23 stsp return NULL;
364 13b2bc37 2022-10-23 stsp static const struct got_error *
365 13b2bc37 2022-10-23 stsp recv_ref_update(struct repo_write_client **client, struct imsg *imsg)
367 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
368 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update iref;
369 13b2bc37 2022-10-23 stsp size_t datalen;
370 13b2bc37 2022-10-23 stsp char *refname = NULL;
371 13b2bc37 2022-10-23 stsp struct got_reference *ref = NULL;
372 13b2bc37 2022-10-23 stsp struct got_object_id *id = NULL;
373 13b2bc37 2022-10-23 stsp struct imsgbuf ibuf;
374 13b2bc37 2022-10-23 stsp struct gotd_ref_update *ref_update = NULL;
376 13b2bc37 2022-10-23 stsp log_debug("ref-update received");
378 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
379 13b2bc37 2022-10-23 stsp if (datalen < sizeof(iref))
380 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
381 13b2bc37 2022-10-23 stsp memcpy(&iref, imsg->data, sizeof(iref));
382 13b2bc37 2022-10-23 stsp if (datalen != sizeof(iref) + iref.name_len)
383 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
385 13b2bc37 2022-10-23 stsp *client = find_client(iref.client_id);
386 13b2bc37 2022-10-23 stsp if (*client == NULL)
387 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_CLIENT_ID);
389 13b2bc37 2022-10-23 stsp imsg_init(&ibuf, (*client)->fd);
391 13b2bc37 2022-10-23 stsp refname = malloc(iref.name_len + 1);
392 13b2bc37 2022-10-23 stsp if (refname == NULL)
393 13b2bc37 2022-10-23 stsp return got_error_from_errno("malloc");
394 13b2bc37 2022-10-23 stsp memcpy(refname, imsg->data + sizeof(iref), iref.name_len);
395 13b2bc37 2022-10-23 stsp refname[iref.name_len] = '\0';
397 13b2bc37 2022-10-23 stsp ref_update = calloc(1, sizeof(*ref_update));
398 13b2bc37 2022-10-23 stsp if (ref_update == NULL) {
399 13b2bc37 2022-10-23 stsp err = got_error_from_errno("malloc");
403 13b2bc37 2022-10-23 stsp memcpy(ref_update->old_id.sha1, iref.old_id, SHA1_DIGEST_LENGTH);
404 13b2bc37 2022-10-23 stsp memcpy(ref_update->new_id.sha1, iref.new_id, SHA1_DIGEST_LENGTH);
406 13b2bc37 2022-10-23 stsp err = got_ref_open(&ref, repo_write.repo, refname, 0);
408 13b2bc37 2022-10-23 stsp if (err->code != GOT_ERR_NOT_REF)
410 13b2bc37 2022-10-23 stsp err = got_ref_alloc(&ref, refname, &ref_update->new_id);
413 13b2bc37 2022-10-23 stsp ref_update->ref_is_new = 1;
415 13b2bc37 2022-10-23 stsp if (got_ref_is_symbolic(ref)) {
416 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_BAD_REF_TYPE,
417 13b2bc37 2022-10-23 stsp "'%s' is a symbolic reference and cannot "
418 13b2bc37 2022-10-23 stsp "be updated", got_ref_get_name(ref));
421 13b2bc37 2022-10-23 stsp if (strncmp("refs/", got_ref_get_name(ref), 5) != 0) {
422 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_BAD_REF_NAME,
423 13b2bc37 2022-10-23 stsp "%s: does not begin with 'refs/'",
424 13b2bc37 2022-10-23 stsp got_ref_get_name(ref));
428 13b2bc37 2022-10-23 stsp err = protect_ref_namespace(ref, "refs/got/");
431 13b2bc37 2022-10-23 stsp err = protect_ref_namespace(ref, "refs/remotes/");
435 13b2bc37 2022-10-23 stsp if (!ref_update->ref_is_new) {
437 13b2bc37 2022-10-23 stsp * Ensure the client's idea of this update is still valid.
438 13b2bc37 2022-10-23 stsp * At this point we can only return an error, to prevent
439 13b2bc37 2022-10-23 stsp * the client from uploading a pack file which will likely
440 13b2bc37 2022-10-23 stsp * have to be discarded.
442 13b2bc37 2022-10-23 stsp err = got_ref_resolve(&id, repo_write.repo, ref);
446 13b2bc37 2022-10-23 stsp if (got_object_id_cmp(id, &ref_update->old_id) != 0) {
447 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_REF_BUSY,
448 13b2bc37 2022-10-23 stsp "%s has been modified by someone else "
449 13b2bc37 2022-10-23 stsp "while transaction was in progress",
450 13b2bc37 2022-10-23 stsp got_ref_get_name(ref));
455 13b2bc37 2022-10-23 stsp gotd_imsg_send_ack(&ref_update->new_id, &ibuf, PROC_REPO_WRITE,
456 13b2bc37 2022-10-23 stsp repo_write.pid);
458 13b2bc37 2022-10-23 stsp ref_update->ref = ref;
459 13b2bc37 2022-10-23 stsp STAILQ_INSERT_HEAD(&(*client)->ref_updates, ref_update, entry);
460 13b2bc37 2022-10-23 stsp (*client)->nref_updates++;
461 13b2bc37 2022-10-23 stsp ref = NULL;
462 13b2bc37 2022-10-23 stsp ref_update = NULL;
465 13b2bc37 2022-10-23 stsp got_ref_close(ref);
466 13b2bc37 2022-10-23 stsp free(ref_update);
467 13b2bc37 2022-10-23 stsp free(refname);
469 13b2bc37 2022-10-23 stsp return err;
472 13b2bc37 2022-10-23 stsp static const struct got_error *
473 13b2bc37 2022-10-23 stsp pack_index_progress(void *arg, uint32_t nobj_total, uint32_t nobj_indexed,
474 13b2bc37 2022-10-23 stsp uint32_t nobj_loose, uint32_t nobj_resolved)
476 13b2bc37 2022-10-23 stsp int p_indexed = 0, p_resolved = 0;
477 13b2bc37 2022-10-23 stsp int nobj_delta = nobj_total - nobj_loose;
479 13b2bc37 2022-10-23 stsp if (nobj_total > 0)
480 13b2bc37 2022-10-23 stsp p_indexed = (nobj_indexed * 100) / nobj_total;
482 13b2bc37 2022-10-23 stsp if (nobj_delta > 0)
483 13b2bc37 2022-10-23 stsp p_resolved = (nobj_resolved * 100) / nobj_delta;
485 13b2bc37 2022-10-23 stsp if (p_resolved > 0) {
486 13b2bc37 2022-10-23 stsp log_debug("indexing %d objects %d%%; resolving %d deltas %d%%",
487 13b2bc37 2022-10-23 stsp nobj_total, p_indexed, nobj_delta, p_resolved);
489 13b2bc37 2022-10-23 stsp log_debug("indexing %d objects %d%%", nobj_total, p_indexed);
491 13b2bc37 2022-10-23 stsp return NULL;
494 13b2bc37 2022-10-23 stsp static const struct got_error *
495 13b2bc37 2022-10-23 stsp read_more_pack_stream(int infd, BUF *buf, size_t minsize)
497 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
498 13b2bc37 2022-10-23 stsp uint8_t readahead[65536];
499 13b2bc37 2022-10-23 stsp size_t have, newlen;
501 13b2bc37 2022-10-23 stsp err = got_poll_read_full(infd, &have,
502 13b2bc37 2022-10-23 stsp readahead, sizeof(readahead), minsize);
504 13b2bc37 2022-10-23 stsp return err;
506 13b2bc37 2022-10-23 stsp err = buf_append(&newlen, buf, readahead, have);
508 13b2bc37 2022-10-23 stsp return err;
509 13b2bc37 2022-10-23 stsp return NULL;
512 13b2bc37 2022-10-23 stsp static const struct got_error *
513 13b2bc37 2022-10-23 stsp copy_object_type_and_size(uint8_t *type, uint64_t *size, int infd, int outfd,
514 13b2bc37 2022-10-23 stsp off_t *outsize, BUF *buf, size_t *buf_pos, SHA1_CTX *ctx)
516 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
517 13b2bc37 2022-10-23 stsp uint8_t t = 0;
518 13b2bc37 2022-10-23 stsp uint64_t s = 0;
519 13b2bc37 2022-10-23 stsp uint8_t sizebuf[8];
520 13b2bc37 2022-10-23 stsp size_t i = 0;
521 13b2bc37 2022-10-23 stsp off_t obj_offset = *outsize;
524 13b2bc37 2022-10-23 stsp /* We do not support size values which don't fit in 64 bit. */
526 13b2bc37 2022-10-23 stsp return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
527 13b2bc37 2022-10-23 stsp "packfile offset %llu", obj_offset);
529 13b2bc37 2022-10-23 stsp if (buf_len(buf) - *buf_pos < sizeof(sizebuf[0])) {
530 13b2bc37 2022-10-23 stsp err = read_more_pack_stream(infd, buf,
531 13b2bc37 2022-10-23 stsp sizeof(sizebuf[0]));
533 13b2bc37 2022-10-23 stsp return err;
536 13b2bc37 2022-10-23 stsp sizebuf[i] = buf_getc(buf, *buf_pos);
537 13b2bc37 2022-10-23 stsp *buf_pos += sizeof(sizebuf[i]);
539 13b2bc37 2022-10-23 stsp if (i == 0) {
540 13b2bc37 2022-10-23 stsp t = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
541 13b2bc37 2022-10-23 stsp GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
542 13b2bc37 2022-10-23 stsp s = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_VAL_MASK);
544 13b2bc37 2022-10-23 stsp size_t shift = 4 + 7 * (i - 1);
545 13b2bc37 2022-10-23 stsp s |= ((sizebuf[i] & GOT_PACK_OBJ_SIZE_VAL_MASK) <<
549 13b2bc37 2022-10-23 stsp } while (sizebuf[i - 1] & GOT_PACK_OBJ_SIZE_MORE);
551 13b2bc37 2022-10-23 stsp err = got_pack_hwrite(outfd, sizebuf, i, ctx);
553 13b2bc37 2022-10-23 stsp return err;
554 13b2bc37 2022-10-23 stsp *outsize += i;
558 13b2bc37 2022-10-23 stsp return NULL;
561 13b2bc37 2022-10-23 stsp static const struct got_error *
562 13b2bc37 2022-10-23 stsp copy_ref_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
563 13b2bc37 2022-10-23 stsp SHA1_CTX *ctx)
565 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
566 13b2bc37 2022-10-23 stsp size_t remain = buf_len(buf) - *buf_pos;
568 13b2bc37 2022-10-23 stsp if (remain < SHA1_DIGEST_LENGTH) {
569 13b2bc37 2022-10-23 stsp err = read_more_pack_stream(infd, buf,
570 13b2bc37 2022-10-23 stsp SHA1_DIGEST_LENGTH - remain);
572 13b2bc37 2022-10-23 stsp return err;
575 13b2bc37 2022-10-23 stsp err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
576 13b2bc37 2022-10-23 stsp SHA1_DIGEST_LENGTH, ctx);
578 13b2bc37 2022-10-23 stsp return err;
580 13b2bc37 2022-10-23 stsp *buf_pos += SHA1_DIGEST_LENGTH;
581 13b2bc37 2022-10-23 stsp return NULL;
584 13b2bc37 2022-10-23 stsp static const struct got_error *
585 13b2bc37 2022-10-23 stsp copy_offset_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
586 13b2bc37 2022-10-23 stsp SHA1_CTX *ctx)
588 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
589 13b2bc37 2022-10-23 stsp uint64_t o = 0;
590 13b2bc37 2022-10-23 stsp uint8_t offbuf[8];
591 13b2bc37 2022-10-23 stsp size_t i = 0;
592 13b2bc37 2022-10-23 stsp off_t obj_offset = *outsize;
595 13b2bc37 2022-10-23 stsp /* We do not support offset values which don't fit in 64 bit. */
597 13b2bc37 2022-10-23 stsp return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
598 13b2bc37 2022-10-23 stsp "packfile offset %llu", obj_offset);
600 13b2bc37 2022-10-23 stsp if (buf_len(buf) - *buf_pos < sizeof(offbuf[0])) {
601 13b2bc37 2022-10-23 stsp err = read_more_pack_stream(infd, buf,
602 13b2bc37 2022-10-23 stsp sizeof(offbuf[0]));
604 13b2bc37 2022-10-23 stsp return err;
607 13b2bc37 2022-10-23 stsp offbuf[i] = buf_getc(buf, *buf_pos);
608 13b2bc37 2022-10-23 stsp *buf_pos += sizeof(offbuf[i]);
610 13b2bc37 2022-10-23 stsp if (i == 0)
611 13b2bc37 2022-10-23 stsp o = (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
615 13b2bc37 2022-10-23 stsp o += (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
618 13b2bc37 2022-10-23 stsp } while (offbuf[i - 1] & GOT_PACK_OBJ_DELTA_OFF_MORE);
620 13b2bc37 2022-10-23 stsp if (o < sizeof(struct got_packfile_hdr) || o > *outsize)
621 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PACK_OFFSET);
623 13b2bc37 2022-10-23 stsp err = got_pack_hwrite(outfd, offbuf, i, ctx);
625 13b2bc37 2022-10-23 stsp return err;
627 13b2bc37 2022-10-23 stsp *outsize += i;
628 13b2bc37 2022-10-23 stsp return NULL;
631 13b2bc37 2022-10-23 stsp static const struct got_error *
632 13b2bc37 2022-10-23 stsp copy_zstream(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
633 13b2bc37 2022-10-23 stsp SHA1_CTX *ctx)
635 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
636 13b2bc37 2022-10-23 stsp z_stream z;
638 13b2bc37 2022-10-23 stsp char voidbuf[1024];
639 13b2bc37 2022-10-23 stsp size_t consumed_total = 0;
640 13b2bc37 2022-10-23 stsp off_t zstream_offset = *outsize;
642 13b2bc37 2022-10-23 stsp memset(&z, 0, sizeof(z));
644 13b2bc37 2022-10-23 stsp z.zalloc = Z_NULL;
645 13b2bc37 2022-10-23 stsp z.zfree = Z_NULL;
646 13b2bc37 2022-10-23 stsp zret = inflateInit(&z);
647 13b2bc37 2022-10-23 stsp if (zret != Z_OK) {
648 13b2bc37 2022-10-23 stsp if (zret == Z_ERRNO)
649 13b2bc37 2022-10-23 stsp return got_error_from_errno("inflateInit");
650 13b2bc37 2022-10-23 stsp if (zret == Z_MEM_ERROR) {
651 13b2bc37 2022-10-23 stsp errno = ENOMEM;
652 13b2bc37 2022-10-23 stsp return got_error_from_errno("inflateInit");
654 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_DECOMPRESSION,
655 13b2bc37 2022-10-23 stsp "inflateInit failed");
658 13b2bc37 2022-10-23 stsp while (zret != Z_STREAM_END) {
659 13b2bc37 2022-10-23 stsp size_t last_total_in, consumed;
662 13b2bc37 2022-10-23 stsp * Decompress into the void. Object data will be parsed
663 13b2bc37 2022-10-23 stsp * later, when the pack file is indexed. For now, we just
664 13b2bc37 2022-10-23 stsp * want to locate the end of the compressed stream.
666 13b2bc37 2022-10-23 stsp while (zret != Z_STREAM_END && buf_len(buf) - *buf_pos > 0) {
667 13b2bc37 2022-10-23 stsp last_total_in = z.total_in;
668 13b2bc37 2022-10-23 stsp z.next_in = buf_get(buf) + *buf_pos;
669 13b2bc37 2022-10-23 stsp z.avail_in = buf_len(buf) - *buf_pos;
670 13b2bc37 2022-10-23 stsp z.next_out = voidbuf;
671 13b2bc37 2022-10-23 stsp z.avail_out = sizeof(voidbuf);
673 13b2bc37 2022-10-23 stsp zret = inflate(&z, Z_SYNC_FLUSH);
674 13b2bc37 2022-10-23 stsp if (zret != Z_OK && zret != Z_BUF_ERROR &&
675 13b2bc37 2022-10-23 stsp zret != Z_STREAM_END) {
676 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_DECOMPRESSION,
677 13b2bc37 2022-10-23 stsp "packfile offset %llu", zstream_offset);
680 13b2bc37 2022-10-23 stsp consumed = z.total_in - last_total_in;
682 13b2bc37 2022-10-23 stsp err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
683 13b2bc37 2022-10-23 stsp consumed, ctx);
687 13b2bc37 2022-10-23 stsp err = buf_discard(buf, *buf_pos + consumed);
690 13b2bc37 2022-10-23 stsp *buf_pos = 0;
692 13b2bc37 2022-10-23 stsp consumed_total += consumed;
695 13b2bc37 2022-10-23 stsp if (zret != Z_STREAM_END) {
696 13b2bc37 2022-10-23 stsp err = read_more_pack_stream(infd, buf, 1);
702 13b2bc37 2022-10-23 stsp if (err == NULL)
703 13b2bc37 2022-10-23 stsp *outsize += consumed_total;
705 13b2bc37 2022-10-23 stsp inflateEnd(&z);
706 13b2bc37 2022-10-23 stsp return err;
709 13b2bc37 2022-10-23 stsp static const struct got_error *
710 13b2bc37 2022-10-23 stsp validate_object_type(int obj_type)
712 13b2bc37 2022-10-23 stsp switch (obj_type) {
713 13b2bc37 2022-10-23 stsp case GOT_OBJ_TYPE_BLOB:
714 13b2bc37 2022-10-23 stsp case GOT_OBJ_TYPE_COMMIT:
715 13b2bc37 2022-10-23 stsp case GOT_OBJ_TYPE_TREE:
716 13b2bc37 2022-10-23 stsp case GOT_OBJ_TYPE_TAG:
717 13b2bc37 2022-10-23 stsp case GOT_OBJ_TYPE_REF_DELTA:
718 13b2bc37 2022-10-23 stsp case GOT_OBJ_TYPE_OFFSET_DELTA:
719 13b2bc37 2022-10-23 stsp return NULL;
724 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_OBJ_TYPE);
727 13b2bc37 2022-10-23 stsp static const struct got_error *
728 13b2bc37 2022-10-23 stsp recv_packdata(off_t *outsize, uint8_t *sha1, int infd, int outfd)
730 13b2bc37 2022-10-23 stsp const struct got_error *err;
731 13b2bc37 2022-10-23 stsp struct got_packfile_hdr hdr;
732 13b2bc37 2022-10-23 stsp size_t have;
733 13b2bc37 2022-10-23 stsp uint32_t nobj, nhave = 0;
734 13b2bc37 2022-10-23 stsp SHA1_CTX ctx;
735 13b2bc37 2022-10-23 stsp uint8_t expected_sha1[SHA1_DIGEST_LENGTH];
736 13b2bc37 2022-10-23 stsp char hex[SHA1_DIGEST_STRING_LENGTH];
737 13b2bc37 2022-10-23 stsp BUF *buf = NULL;
738 13b2bc37 2022-10-23 stsp size_t buf_pos = 0, remain;
741 13b2bc37 2022-10-23 stsp *outsize = 0;
742 13b2bc37 2022-10-23 stsp SHA1Init(&ctx);
744 13b2bc37 2022-10-23 stsp err = got_poll_read_full(infd, &have, &hdr, sizeof(hdr), sizeof(hdr));
746 13b2bc37 2022-10-23 stsp return err;
747 13b2bc37 2022-10-23 stsp if (have != sizeof(hdr))
748 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_BAD_PACKFILE, "short pack file");
749 13b2bc37 2022-10-23 stsp *outsize += have;
751 13b2bc37 2022-10-23 stsp if (hdr.signature != htobe32(GOT_PACKFILE_SIGNATURE))
752 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_BAD_PACKFILE,
753 13b2bc37 2022-10-23 stsp "bad packfile signature");
754 13b2bc37 2022-10-23 stsp if (hdr.version != htobe32(GOT_PACKFILE_VERSION))
755 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_BAD_PACKFILE,
756 13b2bc37 2022-10-23 stsp "bad packfile version");
758 13b2bc37 2022-10-23 stsp nobj = be32toh(hdr.nobjects);
759 13b2bc37 2022-10-23 stsp if (nobj == 0)
760 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_BAD_PACKFILE,
761 13b2bc37 2022-10-23 stsp "bad packfile with zero objects");
763 13b2bc37 2022-10-23 stsp log_debug("expecting %d objects", nobj);
765 13b2bc37 2022-10-23 stsp err = got_pack_hwrite(outfd, &hdr, sizeof(hdr), &ctx);
767 13b2bc37 2022-10-23 stsp return err;
769 13b2bc37 2022-10-23 stsp err = buf_alloc(&buf, 65536);
771 13b2bc37 2022-10-23 stsp return err;
773 13b2bc37 2022-10-23 stsp while (nhave != nobj) {
774 13b2bc37 2022-10-23 stsp uint8_t obj_type;
775 13b2bc37 2022-10-23 stsp uint64_t obj_size;
777 13b2bc37 2022-10-23 stsp err = copy_object_type_and_size(&obj_type, &obj_size,
778 13b2bc37 2022-10-23 stsp infd, outfd, outsize, buf, &buf_pos, &ctx);
782 13b2bc37 2022-10-23 stsp err = validate_object_type(obj_type);
786 13b2bc37 2022-10-23 stsp if (obj_type == GOT_OBJ_TYPE_REF_DELTA) {
787 13b2bc37 2022-10-23 stsp err = copy_ref_delta(infd, outfd, outsize,
788 13b2bc37 2022-10-23 stsp buf, &buf_pos, &ctx);
791 13b2bc37 2022-10-23 stsp } else if (obj_type == GOT_OBJ_TYPE_OFFSET_DELTA) {
792 13b2bc37 2022-10-23 stsp err = copy_offset_delta(infd, outfd, outsize,
793 13b2bc37 2022-10-23 stsp buf, &buf_pos, &ctx);
798 13b2bc37 2022-10-23 stsp err = copy_zstream(infd, outfd, outsize, buf, &buf_pos, &ctx);
805 13b2bc37 2022-10-23 stsp log_debug("received %u objects", nobj);
807 13b2bc37 2022-10-23 stsp SHA1Final(expected_sha1, &ctx);
809 13b2bc37 2022-10-23 stsp remain = buf_len(buf) - buf_pos;
810 13b2bc37 2022-10-23 stsp if (remain < SHA1_DIGEST_LENGTH) {
811 13b2bc37 2022-10-23 stsp err = read_more_pack_stream(infd, buf,
812 13b2bc37 2022-10-23 stsp SHA1_DIGEST_LENGTH - remain);
814 13b2bc37 2022-10-23 stsp return err;
817 13b2bc37 2022-10-23 stsp got_sha1_digest_to_str(expected_sha1, hex, sizeof(hex));
818 13b2bc37 2022-10-23 stsp log_debug("expect SHA1: %s", hex);
819 13b2bc37 2022-10-23 stsp got_sha1_digest_to_str(buf_get(buf) + buf_pos, hex, sizeof(hex));
820 13b2bc37 2022-10-23 stsp log_debug("actual SHA1: %s", hex);
822 13b2bc37 2022-10-23 stsp if (memcmp(buf_get(buf) + buf_pos, expected_sha1,
823 13b2bc37 2022-10-23 stsp SHA1_DIGEST_LENGTH) != 0) {
824 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_PACKFILE_CSUM);
828 13b2bc37 2022-10-23 stsp memcpy(sha1, expected_sha1, SHA1_DIGEST_LENGTH);
830 13b2bc37 2022-10-23 stsp w = write(outfd, expected_sha1, SHA1_DIGEST_LENGTH);
831 13b2bc37 2022-10-23 stsp if (w == -1) {
832 13b2bc37 2022-10-23 stsp err = got_error_from_errno("write");
835 13b2bc37 2022-10-23 stsp if (w != SHA1_DIGEST_LENGTH) {
836 13b2bc37 2022-10-23 stsp err = got_error(GOT_ERR_IO);
840 13b2bc37 2022-10-23 stsp *outsize += SHA1_DIGEST_LENGTH;
842 13b2bc37 2022-10-23 stsp if (fsync(outfd) == -1) {
843 13b2bc37 2022-10-23 stsp err = got_error_from_errno("fsync");
846 13b2bc37 2022-10-23 stsp if (lseek(outfd, 0L, SEEK_SET) == -1) {
847 13b2bc37 2022-10-23 stsp err = got_error_from_errno("lseek");
851 13b2bc37 2022-10-23 stsp buf_free(buf);
852 13b2bc37 2022-10-23 stsp return err;
855 13b2bc37 2022-10-23 stsp static const struct got_error *
856 13b2bc37 2022-10-23 stsp report_pack_status(struct repo_write_client *client,
857 13b2bc37 2022-10-23 stsp const struct got_error *unpack_err)
859 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
860 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_status istatus;
861 13b2bc37 2022-10-23 stsp struct ibuf *wbuf;
862 13b2bc37 2022-10-23 stsp struct imsgbuf ibuf;
863 13b2bc37 2022-10-23 stsp const char *unpack_ok = "unpack ok\n";
864 13b2bc37 2022-10-23 stsp size_t len;
866 13b2bc37 2022-10-23 stsp imsg_init(&ibuf, client->fd);
868 13b2bc37 2022-10-23 stsp if (unpack_err)
869 13b2bc37 2022-10-23 stsp istatus.reason_len = strlen(unpack_err->msg);
871 13b2bc37 2022-10-23 stsp istatus.reason_len = strlen(unpack_ok);
873 13b2bc37 2022-10-23 stsp len = sizeof(istatus) + istatus.reason_len;
874 13b2bc37 2022-10-23 stsp wbuf = imsg_create(&ibuf, GOTD_IMSG_PACKFILE_STATUS, PROC_REPO_WRITE,
875 13b2bc37 2022-10-23 stsp repo_write.pid, len);
876 13b2bc37 2022-10-23 stsp if (wbuf == NULL) {
877 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg_create PACKFILE_STATUS");
881 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, &istatus, sizeof(istatus)) == -1) {
882 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg_add PACKFILE_STATUS");
886 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, err ? err->msg : unpack_ok,
887 13b2bc37 2022-10-23 stsp istatus.reason_len) == -1) {
888 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg_add PACKFILE_STATUS");
892 13b2bc37 2022-10-23 stsp wbuf->fd = -1;
893 13b2bc37 2022-10-23 stsp imsg_close(&ibuf, wbuf);
895 13b2bc37 2022-10-23 stsp err = gotd_imsg_flush(&ibuf);
897 13b2bc37 2022-10-23 stsp imsg_clear(&ibuf);
898 13b2bc37 2022-10-23 stsp return err;
901 13b2bc37 2022-10-23 stsp static const struct got_error *
902 13b2bc37 2022-10-23 stsp recv_packfile(struct repo_write_client **client, struct imsg *imsg)
904 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL, *unpack_err;
905 13b2bc37 2022-10-23 stsp struct gotd_imsg_recv_packfile ireq;
906 13b2bc37 2022-10-23 stsp FILE *tempfiles[3] = { NULL, NULL, NULL };
907 13b2bc37 2022-10-23 stsp struct repo_tempfile {
910 13b2bc37 2022-10-23 stsp } repo_tempfiles[3] = { { - 1, - 1 }, { - 1, - 1 }, { - 1, - 1 }, };
912 13b2bc37 2022-10-23 stsp size_t datalen;
913 13b2bc37 2022-10-23 stsp struct imsgbuf ibuf;
914 13b2bc37 2022-10-23 stsp struct got_ratelimit rl;
915 13b2bc37 2022-10-23 stsp struct got_pack *pack = NULL;
916 13b2bc37 2022-10-23 stsp off_t pack_filesize = 0;
918 13b2bc37 2022-10-23 stsp log_debug("packfile request received");
920 13b2bc37 2022-10-23 stsp got_ratelimit_init(&rl, 2, 0);
922 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
923 13b2bc37 2022-10-23 stsp if (datalen != sizeof(ireq))
924 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
925 13b2bc37 2022-10-23 stsp memcpy(&ireq, imsg->data, sizeof(ireq));
927 13b2bc37 2022-10-23 stsp *client = find_client(ireq.client_id);
928 13b2bc37 2022-10-23 stsp if (*client == NULL || STAILQ_EMPTY(&(*client)->ref_updates))
929 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_CLIENT_ID);
931 13b2bc37 2022-10-23 stsp if ((*client)->pack_pipe[0] == -1 ||
932 13b2bc37 2022-10-23 stsp (*client)->pack_pipe[1] == -1 ||
933 13b2bc37 2022-10-23 stsp (*client)->packidx_fd == -1)
934 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_NO_FD);
936 13b2bc37 2022-10-23 stsp imsg_init(&ibuf, (*client)->fd);
938 13b2bc37 2022-10-23 stsp if (imsg->fd == -1)
939 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_NO_FD);
941 13b2bc37 2022-10-23 stsp pack = &(*client)->pack;
942 13b2bc37 2022-10-23 stsp memset(pack, 0, sizeof(*pack));
943 13b2bc37 2022-10-23 stsp pack->fd = imsg->fd;
944 13b2bc37 2022-10-23 stsp err = got_delta_cache_alloc(&pack->delta_cache);
946 13b2bc37 2022-10-23 stsp return err;
948 13b2bc37 2022-10-23 stsp for (i = 0; i < nitems(repo_tempfiles); i++) {
949 13b2bc37 2022-10-23 stsp struct repo_tempfile *t = &repo_tempfiles[i];
950 13b2bc37 2022-10-23 stsp err = got_repo_temp_fds_get(&t->fd, &t->idx, repo_write.repo);
955 13b2bc37 2022-10-23 stsp for (i = 0; i < nitems(tempfiles); i++) {
956 13b2bc37 2022-10-23 stsp int fd = dup(repo_tempfiles[i].fd);
958 13b2bc37 2022-10-23 stsp if (fd == -1) {
959 13b2bc37 2022-10-23 stsp err = got_error_from_errno("dup");
962 13b2bc37 2022-10-23 stsp f = fdopen(fd, "w+");
963 13b2bc37 2022-10-23 stsp if (f == NULL) {
964 13b2bc37 2022-10-23 stsp err = got_error_from_errno("dup");
968 13b2bc37 2022-10-23 stsp tempfiles[i] = f;
971 13b2bc37 2022-10-23 stsp /* Send pack file pipe to gotsh(1). */
972 13b2bc37 2022-10-23 stsp if (imsg_compose(&ibuf, GOTD_IMSG_RECV_PACKFILE, PROC_REPO_WRITE,
973 13b2bc37 2022-10-23 stsp repo_write.pid, (*client)->pack_pipe[1], NULL, 0) == -1) {
974 13b2bc37 2022-10-23 stsp (*client)->pack_pipe[1] = -1;
975 13b2bc37 2022-10-23 stsp err = got_error_from_errno("imsg_compose ACK");
979 13b2bc37 2022-10-23 stsp (*client)->pack_pipe[1] = -1;
980 13b2bc37 2022-10-23 stsp err = gotd_imsg_flush(&ibuf);
984 13b2bc37 2022-10-23 stsp log_debug("receiving pack data");
985 13b2bc37 2022-10-23 stsp unpack_err = recv_packdata(&pack_filesize, (*client)->pack_sha1,
986 13b2bc37 2022-10-23 stsp (*client)->pack_pipe[0], pack->fd);
987 13b2bc37 2022-10-23 stsp if (ireq.report_status) {
988 13b2bc37 2022-10-23 stsp err = report_pack_status(*client, unpack_err);
990 13b2bc37 2022-10-23 stsp /* Git clients hang up after sending the pack file. */
991 13b2bc37 2022-10-23 stsp if (err->code == GOT_ERR_EOF)
992 13b2bc37 2022-10-23 stsp err = NULL;
995 13b2bc37 2022-10-23 stsp if (unpack_err)
996 13b2bc37 2022-10-23 stsp err = unpack_err;
1000 13b2bc37 2022-10-23 stsp log_debug("pack data received");
1002 13b2bc37 2022-10-23 stsp /* XXX size_t vs off_t, both should be off_t */
1003 13b2bc37 2022-10-23 stsp if (pack_filesize >= SIZE_MAX) {
1004 13b2bc37 2022-10-23 stsp err = got_error_msg(GOT_ERR_BAD_PACKFILE,
1005 13b2bc37 2022-10-23 stsp "pack file too large");
1006 13b2bc37 2022-10-23 stsp goto done;
1008 13b2bc37 2022-10-23 stsp pack->filesize = pack_filesize;
1010 13b2bc37 2022-10-23 stsp log_debug("begin indexing pack (%zu bytes in size)", pack->filesize);
1011 13b2bc37 2022-10-23 stsp err = got_pack_index(pack, (*client)->packidx_fd,
1012 13b2bc37 2022-10-23 stsp tempfiles[0], tempfiles[1], tempfiles[2], (*client)->pack_sha1,
1013 13b2bc37 2022-10-23 stsp pack_index_progress, NULL, &rl);
1015 13b2bc37 2022-10-23 stsp goto done;
1016 13b2bc37 2022-10-23 stsp log_debug("done indexing pack");
1018 13b2bc37 2022-10-23 stsp if (fsync((*client)->packidx_fd) == -1) {
1019 13b2bc37 2022-10-23 stsp err = got_error_from_errno("fsync");
1020 13b2bc37 2022-10-23 stsp goto done;
1022 13b2bc37 2022-10-23 stsp if (lseek((*client)->packidx_fd, 0L, SEEK_SET) == -1)
1023 13b2bc37 2022-10-23 stsp err = got_error_from_errno("lseek");
1025 13b2bc37 2022-10-23 stsp if (close((*client)->pack_pipe[0]) == -1 && err == NULL)
1026 13b2bc37 2022-10-23 stsp err = got_error_from_errno("close");
1027 13b2bc37 2022-10-23 stsp (*client)->pack_pipe[0] = -1;
1028 13b2bc37 2022-10-23 stsp for (i = 0; i < nitems(repo_tempfiles); i++) {
1029 13b2bc37 2022-10-23 stsp struct repo_tempfile *t = &repo_tempfiles[i];
1030 13b2bc37 2022-10-23 stsp if (t->idx != -1)
1031 13b2bc37 2022-10-23 stsp got_repo_temp_fds_put(t->idx, repo_write.repo);
1033 13b2bc37 2022-10-23 stsp for (i = 0; i < nitems(tempfiles); i++) {
1034 13b2bc37 2022-10-23 stsp if (tempfiles[i] && fclose(tempfiles[i]) == EOF && err == NULL)
1035 13b2bc37 2022-10-23 stsp err = got_error_from_errno("fclose");
1038 13b2bc37 2022-10-23 stsp got_pack_close(pack);
1039 13b2bc37 2022-10-23 stsp imsg_clear(&ibuf);
1040 13b2bc37 2022-10-23 stsp return err;
1043 13b2bc37 2022-10-23 stsp static const struct got_error *
1044 13b2bc37 2022-10-23 stsp verify_packfile(struct repo_write_client *client)
1046 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL, *close_err;
1047 13b2bc37 2022-10-23 stsp struct gotd_ref_update *ref_update;
1048 13b2bc37 2022-10-23 stsp struct got_packidx *packidx = NULL;
1049 13b2bc37 2022-10-23 stsp struct stat sb;
1050 13b2bc37 2022-10-23 stsp char *id_str = NULL;
1051 13b2bc37 2022-10-23 stsp int idx = -1;
1053 13b2bc37 2022-10-23 stsp if (STAILQ_EMPTY(&client->ref_updates)) {
1054 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_BAD_REQUEST,
1055 13b2bc37 2022-10-23 stsp "cannot verify pack file without any ref-updates");
1058 13b2bc37 2022-10-23 stsp if (client->pack.fd == -1) {
1059 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_BAD_REQUEST,
1060 13b2bc37 2022-10-23 stsp "invalid pack file handle during pack verification");
1062 13b2bc37 2022-10-23 stsp if (client->packidx_fd == -1) {
1063 13b2bc37 2022-10-23 stsp return got_error_msg(GOT_ERR_BAD_REQUEST,
1064 13b2bc37 2022-10-23 stsp "invalid pack index handle during pack verification");
1067 13b2bc37 2022-10-23 stsp if (fstat(client->packidx_fd, &sb) == -1)
1068 13b2bc37 2022-10-23 stsp return got_error_from_errno("pack index fstat");
1070 13b2bc37 2022-10-23 stsp packidx = malloc(sizeof(*packidx));
1071 13b2bc37 2022-10-23 stsp memset(packidx, 0, sizeof(*packidx));
1072 13b2bc37 2022-10-23 stsp packidx->fd = client->packidx_fd;
1073 13b2bc37 2022-10-23 stsp client->packidx_fd = -1;
1074 13b2bc37 2022-10-23 stsp packidx->len = sb.st_size;
1076 13b2bc37 2022-10-23 stsp err = got_packidx_init_hdr(packidx, 1, client->pack.filesize);
1078 13b2bc37 2022-10-23 stsp return err;
1080 13b2bc37 2022-10-23 stsp STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1081 13b2bc37 2022-10-23 stsp err = got_object_id_str(&id_str, &ref_update->new_id);
1083 13b2bc37 2022-10-23 stsp goto done;
1085 13b2bc37 2022-10-23 stsp idx = got_packidx_get_object_idx(packidx, &ref_update->new_id);
1086 13b2bc37 2022-10-23 stsp if (idx == -1) {
1087 13b2bc37 2022-10-23 stsp err = got_error_fmt(GOT_ERR_BAD_PACKFILE,
1088 13b2bc37 2022-10-23 stsp "advertised object %s is missing from pack file",
1090 13b2bc37 2022-10-23 stsp goto done;
1095 13b2bc37 2022-10-23 stsp close_err = got_packidx_close(packidx);
1096 13b2bc37 2022-10-23 stsp if (close_err && err == NULL)
1097 13b2bc37 2022-10-23 stsp err = close_err;
1098 13b2bc37 2022-10-23 stsp free(id_str);
1099 13b2bc37 2022-10-23 stsp return err;
1102 13b2bc37 2022-10-23 stsp static const struct got_error *
1103 13b2bc37 2022-10-23 stsp install_packfile(struct repo_write_client *client, struct gotd_imsgev *iev)
1105 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_install inst;
1108 13b2bc37 2022-10-23 stsp memset(&inst, 0, sizeof(inst));
1109 13b2bc37 2022-10-23 stsp inst.client_id = client->id;
1110 13b2bc37 2022-10-23 stsp memcpy(inst.pack_sha1, client->pack_sha1, SHA1_DIGEST_LENGTH);
1112 13b2bc37 2022-10-23 stsp ret = gotd_imsg_compose_event(iev, GOTD_IMSG_PACKFILE_INSTALL,
1113 13b2bc37 2022-10-23 stsp PROC_REPO_WRITE, -1, &inst, sizeof(inst));
1114 13b2bc37 2022-10-23 stsp if (ret == -1)
1115 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_compose PACKFILE_INSTALL");
1117 13b2bc37 2022-10-23 stsp return NULL;
1120 13b2bc37 2022-10-23 stsp static const struct got_error *
1121 13b2bc37 2022-10-23 stsp send_ref_updates_start(struct repo_write_client *client, int nref_updates,
1122 13b2bc37 2022-10-23 stsp struct gotd_imsgev *iev)
1124 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_updates_start istart;
1127 13b2bc37 2022-10-23 stsp memset(&istart, 0, sizeof(istart));
1128 13b2bc37 2022-10-23 stsp istart.nref_updates = nref_updates;
1129 13b2bc37 2022-10-23 stsp istart.client_id = client->id;
1131 13b2bc37 2022-10-23 stsp ret = gotd_imsg_compose_event(iev, GOTD_IMSG_REF_UPDATES_START,
1132 13b2bc37 2022-10-23 stsp PROC_REPO_WRITE, -1, &istart, sizeof(istart));
1133 13b2bc37 2022-10-23 stsp if (ret == -1)
1134 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_compose REF_UPDATES_START");
1136 13b2bc37 2022-10-23 stsp return NULL;
1140 13b2bc37 2022-10-23 stsp static const struct got_error *
1141 13b2bc37 2022-10-23 stsp send_ref_update(struct repo_write_client *client,
1142 13b2bc37 2022-10-23 stsp struct gotd_ref_update *ref_update, struct gotd_imsgev *iev)
1144 13b2bc37 2022-10-23 stsp struct gotd_imsg_ref_update iref;
1145 13b2bc37 2022-10-23 stsp const char *refname = got_ref_get_name(ref_update->ref);
1146 13b2bc37 2022-10-23 stsp struct ibuf *wbuf;
1147 13b2bc37 2022-10-23 stsp size_t len;
1149 13b2bc37 2022-10-23 stsp memset(&iref, 0, sizeof(iref));
1150 13b2bc37 2022-10-23 stsp memcpy(iref.old_id, ref_update->old_id.sha1, SHA1_DIGEST_LENGTH);
1151 13b2bc37 2022-10-23 stsp memcpy(iref.new_id, ref_update->new_id.sha1, SHA1_DIGEST_LENGTH);
1152 13b2bc37 2022-10-23 stsp iref.ref_is_new = ref_update->ref_is_new;
1153 13b2bc37 2022-10-23 stsp iref.client_id = client->id;
1154 13b2bc37 2022-10-23 stsp iref.name_len = strlen(refname);
1156 13b2bc37 2022-10-23 stsp len = sizeof(iref) + iref.name_len;
1157 13b2bc37 2022-10-23 stsp wbuf = imsg_create(&iev->ibuf, GOTD_IMSG_REF_UPDATE, PROC_REPO_WRITE,
1158 13b2bc37 2022-10-23 stsp repo_write.pid, len);
1159 13b2bc37 2022-10-23 stsp if (wbuf == NULL)
1160 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_create REF_UPDATE");
1162 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, &iref, sizeof(iref)) == -1)
1163 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_add REF_UPDATE");
1164 13b2bc37 2022-10-23 stsp if (imsg_add(wbuf, refname, iref.name_len) == -1)
1165 13b2bc37 2022-10-23 stsp return got_error_from_errno("imsg_add REF_UPDATE");
1167 13b2bc37 2022-10-23 stsp wbuf->fd = -1;
1168 13b2bc37 2022-10-23 stsp imsg_close(&iev->ibuf, wbuf);
1170 13b2bc37 2022-10-23 stsp gotd_imsg_event_add(iev);
1171 13b2bc37 2022-10-23 stsp return NULL;
1174 13b2bc37 2022-10-23 stsp static const struct got_error *
1175 13b2bc37 2022-10-23 stsp update_refs(struct repo_write_client *client, struct gotd_imsgev *iev)
1177 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
1178 13b2bc37 2022-10-23 stsp struct gotd_ref_update *ref_update;
1180 13b2bc37 2022-10-23 stsp err = send_ref_updates_start(client, client->nref_updates, iev);
1182 13b2bc37 2022-10-23 stsp return err;
1184 13b2bc37 2022-10-23 stsp STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1185 13b2bc37 2022-10-23 stsp err = send_ref_update(client, ref_update, iev);
1187 13b2bc37 2022-10-23 stsp goto done;
1190 13b2bc37 2022-10-23 stsp return err;
1193 13b2bc37 2022-10-23 stsp static const struct got_error *
1194 13b2bc37 2022-10-23 stsp recv_disconnect(struct imsg *imsg)
1196 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
1197 13b2bc37 2022-10-23 stsp struct gotd_imsg_disconnect idisconnect;
1198 13b2bc37 2022-10-23 stsp size_t datalen;
1199 13b2bc37 2022-10-23 stsp int client_fd = -1, pipe0 = -1, pipe1 = - 1, idxfd = -1;
1200 13b2bc37 2022-10-23 stsp struct repo_write_client *client = NULL;
1201 13b2bc37 2022-10-23 stsp uint64_t slot;
1203 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1204 13b2bc37 2022-10-23 stsp if (datalen != sizeof(idisconnect))
1205 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
1206 13b2bc37 2022-10-23 stsp memcpy(&idisconnect, imsg->data, sizeof(idisconnect));
1208 13b2bc37 2022-10-23 stsp log_debug("client disconnecting");
1210 13b2bc37 2022-10-23 stsp client = find_client(idisconnect.client_id);
1211 13b2bc37 2022-10-23 stsp if (client == NULL)
1212 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_CLIENT_ID);
1214 13b2bc37 2022-10-23 stsp slot = client_hash(client->id) % nitems(repo_write_clients);
1215 13b2bc37 2022-10-23 stsp STAILQ_REMOVE(&repo_write_clients[slot], client, repo_write_client,
1217 13b2bc37 2022-10-23 stsp while (!STAILQ_EMPTY(&client->ref_updates)) {
1218 13b2bc37 2022-10-23 stsp struct gotd_ref_update *ref_update;
1219 13b2bc37 2022-10-23 stsp ref_update = STAILQ_FIRST(&client->ref_updates);
1220 13b2bc37 2022-10-23 stsp STAILQ_REMOVE_HEAD(&client->ref_updates, entry);
1221 13b2bc37 2022-10-23 stsp got_ref_close(ref_update->ref);
1222 13b2bc37 2022-10-23 stsp free(ref_update);
1224 13b2bc37 2022-10-23 stsp err = got_pack_close(&client->pack);
1225 13b2bc37 2022-10-23 stsp client_fd = client->fd;
1226 13b2bc37 2022-10-23 stsp pipe0 = client->pack_pipe[0];
1227 13b2bc37 2022-10-23 stsp pipe1 = client->pack_pipe[1];
1228 13b2bc37 2022-10-23 stsp idxfd = client->packidx_fd;
1229 13b2bc37 2022-10-23 stsp free(client);
1230 13b2bc37 2022-10-23 stsp if (client_fd != -1 && close(client_fd) == -1)
1231 13b2bc37 2022-10-23 stsp err = got_error_from_errno("close");
1232 13b2bc37 2022-10-23 stsp if (pipe0 != -1 && close(pipe0) == -1 && err == NULL)
1233 13b2bc37 2022-10-23 stsp err = got_error_from_errno("close");
1234 13b2bc37 2022-10-23 stsp if (pipe1 != -1 && close(pipe1) == -1 && err == NULL)
1235 13b2bc37 2022-10-23 stsp err = got_error_from_errno("close");
1236 13b2bc37 2022-10-23 stsp if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
1237 13b2bc37 2022-10-23 stsp err = got_error_from_errno("close");
1238 13b2bc37 2022-10-23 stsp return err;
1241 13b2bc37 2022-10-23 stsp static const struct got_error *
1242 13b2bc37 2022-10-23 stsp receive_pack_pipe(struct repo_write_client **client, struct imsg *imsg,
1243 13b2bc37 2022-10-23 stsp struct gotd_imsgev *iev)
1245 13b2bc37 2022-10-23 stsp struct gotd_imsg_packfile_pipe ireq;
1246 13b2bc37 2022-10-23 stsp size_t datalen;
1248 13b2bc37 2022-10-23 stsp log_debug("receving pack pipe descriptor");
1250 13b2bc37 2022-10-23 stsp if (imsg->fd == -1)
1251 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_NO_FD);
1253 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1254 13b2bc37 2022-10-23 stsp if (datalen != sizeof(ireq))
1255 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
1256 13b2bc37 2022-10-23 stsp memcpy(&ireq, imsg->data, sizeof(ireq));
1258 13b2bc37 2022-10-23 stsp *client = find_client(ireq.client_id);
1259 13b2bc37 2022-10-23 stsp if (*client == NULL)
1260 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_CLIENT_ID);
1261 13b2bc37 2022-10-23 stsp if ((*client)->pack_pipe[1] != -1)
1262 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_MSG);
1264 13b2bc37 2022-10-23 stsp if ((*client)->pack_pipe[0] == -1)
1265 13b2bc37 2022-10-23 stsp (*client)->pack_pipe[0] = imsg->fd;
1267 13b2bc37 2022-10-23 stsp (*client)->pack_pipe[1] = imsg->fd;
1269 13b2bc37 2022-10-23 stsp return NULL;
1272 13b2bc37 2022-10-23 stsp static const struct got_error *
1273 13b2bc37 2022-10-23 stsp receive_pack_idx(struct repo_write_client **client, struct imsg *imsg,
1274 13b2bc37 2022-10-23 stsp struct gotd_imsgev *iev)
1276 13b2bc37 2022-10-23 stsp struct gotd_imsg_packidx_file ireq;
1277 13b2bc37 2022-10-23 stsp size_t datalen;
1279 13b2bc37 2022-10-23 stsp log_debug("receving pack index output file");
1281 13b2bc37 2022-10-23 stsp if (imsg->fd == -1)
1282 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_NO_FD);
1284 13b2bc37 2022-10-23 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1285 13b2bc37 2022-10-23 stsp if (datalen != sizeof(ireq))
1286 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
1287 13b2bc37 2022-10-23 stsp memcpy(&ireq, imsg->data, sizeof(ireq));
1289 13b2bc37 2022-10-23 stsp *client = find_client(ireq.client_id);
1290 13b2bc37 2022-10-23 stsp if (*client == NULL)
1291 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_CLIENT_ID);
1292 13b2bc37 2022-10-23 stsp if ((*client)->packidx_fd != -1)
1293 13b2bc37 2022-10-23 stsp return got_error(GOT_ERR_PRIVSEP_MSG);
1295 13b2bc37 2022-10-23 stsp (*client)->packidx_fd = imsg->fd;
1296 13b2bc37 2022-10-23 stsp return NULL;
1299 13b2bc37 2022-10-23 stsp static void
1300 13b2bc37 2022-10-23 stsp repo_write_dispatch(int fd, short event, void *arg)
1302 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
1303 13b2bc37 2022-10-23 stsp struct gotd_imsgev *iev = arg;
1304 13b2bc37 2022-10-23 stsp struct imsgbuf *ibuf = &iev->ibuf;
1305 13b2bc37 2022-10-23 stsp struct imsg imsg;
1306 13b2bc37 2022-10-23 stsp struct repo_write_client *client = NULL;
1307 13b2bc37 2022-10-23 stsp ssize_t n;
1308 13b2bc37 2022-10-23 stsp int shut = 0;
1310 13b2bc37 2022-10-23 stsp if (event & EV_READ) {
1311 13b2bc37 2022-10-23 stsp if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1312 13b2bc37 2022-10-23 stsp fatal("imsg_read error");
1313 13b2bc37 2022-10-23 stsp if (n == 0) /* Connection closed. */
1317 13b2bc37 2022-10-23 stsp if (event & EV_WRITE) {
1318 13b2bc37 2022-10-23 stsp n = msgbuf_write(&ibuf->w);
1319 13b2bc37 2022-10-23 stsp if (n == -1 && errno != EAGAIN)
1320 13b2bc37 2022-10-23 stsp fatal("msgbuf_write");
1321 13b2bc37 2022-10-23 stsp if (n == 0) /* Connection closed. */
1325 13b2bc37 2022-10-23 stsp for (;;) {
1326 13b2bc37 2022-10-23 stsp if ((n = imsg_get(ibuf, &imsg)) == -1)
1327 13b2bc37 2022-10-23 stsp fatal("%s: imsg_get error", __func__);
1328 13b2bc37 2022-10-23 stsp if (n == 0) /* No more messages. */
1331 13b2bc37 2022-10-23 stsp switch (imsg.hdr.type) {
1332 13b2bc37 2022-10-23 stsp case GOTD_IMSG_LIST_REFS_INTERNAL:
1333 13b2bc37 2022-10-23 stsp err = list_refs(&client, &imsg);
1335 13b2bc37 2022-10-23 stsp log_warnx("%s: ls-refs: %s", repo_write.title,
1336 13b2bc37 2022-10-23 stsp err->msg);
1338 13b2bc37 2022-10-23 stsp case GOTD_IMSG_REF_UPDATE:
1339 13b2bc37 2022-10-23 stsp err = recv_ref_update(&client, &imsg);
1341 13b2bc37 2022-10-23 stsp log_warnx("%s: ref-update: %s",
1342 13b2bc37 2022-10-23 stsp repo_write.title, err->msg);
1344 13b2bc37 2022-10-23 stsp case GOTD_IMSG_PACKFILE_PIPE:
1345 13b2bc37 2022-10-23 stsp err = receive_pack_pipe(&client, &imsg, iev);
1346 13b2bc37 2022-10-23 stsp if (err) {
1347 13b2bc37 2022-10-23 stsp log_warnx("%s: receiving pack pipe: %s",
1348 13b2bc37 2022-10-23 stsp repo_write.title, err->msg);
1352 13b2bc37 2022-10-23 stsp case GOTD_IMSG_PACKIDX_FILE:
1353 13b2bc37 2022-10-23 stsp err = receive_pack_idx(&client, &imsg, iev);
1354 13b2bc37 2022-10-23 stsp if (err) {
1355 13b2bc37 2022-10-23 stsp log_warnx("%s: receiving pack index: %s",
1356 13b2bc37 2022-10-23 stsp repo_write.title, err->msg);
1360 13b2bc37 2022-10-23 stsp case GOTD_IMSG_RECV_PACKFILE:
1361 13b2bc37 2022-10-23 stsp err = recv_packfile(&client, &imsg);
1362 13b2bc37 2022-10-23 stsp if (err) {
1363 13b2bc37 2022-10-23 stsp log_warnx("%s: receive packfile: %s",
1364 13b2bc37 2022-10-23 stsp repo_write.title, err->msg);
1367 13b2bc37 2022-10-23 stsp err = verify_packfile(client);
1368 13b2bc37 2022-10-23 stsp if (err) {
1369 13b2bc37 2022-10-23 stsp log_warnx("%s: verify packfile: %s",
1370 13b2bc37 2022-10-23 stsp repo_write.title, err->msg);
1373 13b2bc37 2022-10-23 stsp err = install_packfile(client, iev);
1374 13b2bc37 2022-10-23 stsp if (err) {
1375 13b2bc37 2022-10-23 stsp log_warnx("%s: install packfile: %s",
1376 13b2bc37 2022-10-23 stsp repo_write.title, err->msg);
1379 13b2bc37 2022-10-23 stsp err = update_refs(client, iev);
1380 13b2bc37 2022-10-23 stsp if (err) {
1381 13b2bc37 2022-10-23 stsp log_warnx("%s: update refs: %s",
1382 13b2bc37 2022-10-23 stsp repo_write.title, err->msg);
1385 13b2bc37 2022-10-23 stsp case GOTD_IMSG_DISCONNECT:
1386 13b2bc37 2022-10-23 stsp err = recv_disconnect(&imsg);
1388 13b2bc37 2022-10-23 stsp log_warnx("%s: disconnect: %s",
1389 13b2bc37 2022-10-23 stsp repo_write.title, err->msg);
1392 13b2bc37 2022-10-23 stsp log_debug("%s: unexpected imsg %d", repo_write.title,
1393 13b2bc37 2022-10-23 stsp imsg.hdr.type);
1397 13b2bc37 2022-10-23 stsp imsg_free(&imsg);
1400 13b2bc37 2022-10-23 stsp if (!shut && check_cancelled(NULL) == NULL) {
1401 13b2bc37 2022-10-23 stsp if (err &&
1402 13b2bc37 2022-10-23 stsp gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
1403 13b2bc37 2022-10-23 stsp client ? client->id : 0, err) == -1) {
1404 13b2bc37 2022-10-23 stsp log_warnx("could not send error to parent: %s",
1405 13b2bc37 2022-10-23 stsp err->msg);
1407 13b2bc37 2022-10-23 stsp gotd_imsg_event_add(iev);
1409 13b2bc37 2022-10-23 stsp /* This pipe is dead. Remove its event handler */
1410 13b2bc37 2022-10-23 stsp event_del(&iev->ev);
1411 13b2bc37 2022-10-23 stsp event_loopexit(NULL);
1416 13b2bc37 2022-10-23 stsp repo_write_main(const char *title, int *pack_fds, int *temp_fds)
1418 13b2bc37 2022-10-23 stsp const struct got_error *err = NULL;
1419 13b2bc37 2022-10-23 stsp struct gotd_imsgev iev;
1421 13b2bc37 2022-10-23 stsp repo_write.title = title;
1422 13b2bc37 2022-10-23 stsp repo_write.pid = getpid();
1423 13b2bc37 2022-10-23 stsp repo_write.pack_fds = pack_fds;
1424 13b2bc37 2022-10-23 stsp repo_write.temp_fds = temp_fds;
1426 13b2bc37 2022-10-23 stsp arc4random_buf(&clients_hash_key, sizeof(clients_hash_key));
1429 13b2bc37 2022-10-23 stsp * Open a repository in the root directory.
1430 13b2bc37 2022-10-23 stsp * We are already in chroot at this point.
1432 13b2bc37 2022-10-23 stsp err = got_repo_open(&repo_write.repo, "/", NULL, pack_fds);
1434 13b2bc37 2022-10-23 stsp goto done;
1435 13b2bc37 2022-10-23 stsp if (!got_repo_is_bare(repo_write.repo)) {
1436 13b2bc37 2022-10-23 stsp err = got_error_msg(GOT_ERR_NOT_GIT_REPO,
1437 13b2bc37 2022-10-23 stsp "bare git repository required");
1438 13b2bc37 2022-10-23 stsp goto done;
1441 13b2bc37 2022-10-23 stsp got_repo_temp_fds_set(repo_write.repo, temp_fds);
1443 13b2bc37 2022-10-23 stsp signal(SIGINT, catch_sigint);
1444 13b2bc37 2022-10-23 stsp signal(SIGTERM, catch_sigterm);
1445 13b2bc37 2022-10-23 stsp signal(SIGPIPE, SIG_IGN);
1446 13b2bc37 2022-10-23 stsp signal(SIGHUP, SIG_IGN);
1448 13b2bc37 2022-10-23 stsp imsg_init(&iev.ibuf, GOTD_SOCK_FILENO);
1449 13b2bc37 2022-10-23 stsp iev.handler = repo_write_dispatch;
1450 13b2bc37 2022-10-23 stsp iev.events = EV_READ;
1451 13b2bc37 2022-10-23 stsp iev.handler_arg = NULL;
1452 13b2bc37 2022-10-23 stsp event_set(&iev.ev, iev.ibuf.fd, EV_READ, repo_write_dispatch, &iev);
1453 13b2bc37 2022-10-23 stsp if (event_add(&iev.ev, NULL) == -1) {
1454 13b2bc37 2022-10-23 stsp err = got_error_from_errno("event_add");
1455 13b2bc37 2022-10-23 stsp goto done;
1458 13b2bc37 2022-10-23 stsp event_dispatch();
1461 13b2bc37 2022-10-23 stsp log_warnx("%s: %s", title, err->msg);
1462 13b2bc37 2022-10-23 stsp repo_write_shutdown();
1466 13b2bc37 2022-10-23 stsp repo_write_shutdown(void)
1468 13b2bc37 2022-10-23 stsp log_debug("%s: shutting down", repo_write.title);
1469 13b2bc37 2022-10-23 stsp if (repo_write.repo)
1470 13b2bc37 2022-10-23 stsp got_repo_close(repo_write.repo);
1471 13b2bc37 2022-10-23 stsp got_repo_pack_fds_close(repo_write.pack_fds);
1472 13b2bc37 2022-10-23 stsp got_repo_temp_fds_close(repo_write.pack_fds);