2 3efd8e31 2022-10-23 thomas * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
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.
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.
17 3efd8e31 2022-10-23 thomas #include <sys/queue.h>
18 3efd8e31 2022-10-23 thomas #include <sys/stat.h>
19 3efd8e31 2022-10-23 thomas #include <sys/types.h>
21 3efd8e31 2022-10-23 thomas #include <event.h>
22 3efd8e31 2022-10-23 thomas #include <errno.h>
23 3efd8e31 2022-10-23 thomas #include <imsg.h>
24 3efd8e31 2022-10-23 thomas #include <signal.h>
25 3efd8e31 2022-10-23 thomas #include <siphash.h>
26 3efd8e31 2022-10-23 thomas #include <stdio.h>
27 3efd8e31 2022-10-23 thomas #include <stdlib.h>
28 3efd8e31 2022-10-23 thomas #include <string.h>
29 3efd8e31 2022-10-23 thomas #include <limits.h>
30 3efd8e31 2022-10-23 thomas #include <poll.h>
31 3efd8e31 2022-10-23 thomas #include <unistd.h>
32 3efd8e31 2022-10-23 thomas #include <zlib.h>
34 3efd8e31 2022-10-23 thomas #include "buf.h"
36 3efd8e31 2022-10-23 thomas #include "got_error.h"
37 3efd8e31 2022-10-23 thomas #include "got_repository.h"
38 3efd8e31 2022-10-23 thomas #include "got_object.h"
39 3efd8e31 2022-10-23 thomas #include "got_reference.h"
40 3efd8e31 2022-10-23 thomas #include "got_path.h"
42 3efd8e31 2022-10-23 thomas #include "got_lib_delta.h"
43 3efd8e31 2022-10-23 thomas #include "got_lib_delta_cache.h"
44 b16893ba 2023-02-24 thomas #include "got_lib_hash.h"
45 3efd8e31 2022-10-23 thomas #include "got_lib_object.h"
46 3efd8e31 2022-10-23 thomas #include "got_lib_object_cache.h"
47 6d7eb4f7 2023-04-04 thomas #include "got_lib_object_idset.h"
48 6d7eb4f7 2023-04-04 thomas #include "got_lib_object_parse.h"
49 3efd8e31 2022-10-23 thomas #include "got_lib_ratelimit.h"
50 3efd8e31 2022-10-23 thomas #include "got_lib_pack.h"
51 3efd8e31 2022-10-23 thomas #include "got_lib_pack_index.h"
52 3efd8e31 2022-10-23 thomas #include "got_lib_repository.h"
53 3efd8e31 2022-10-23 thomas #include "got_lib_poll.h"
55 3efd8e31 2022-10-23 thomas #include "log.h"
56 3efd8e31 2022-10-23 thomas #include "gotd.h"
57 3efd8e31 2022-10-23 thomas #include "repo_write.h"
59 3efd8e31 2022-10-23 thomas #ifndef nitems
60 3efd8e31 2022-10-23 thomas #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
63 3efd8e31 2022-10-23 thomas static struct repo_write {
64 3efd8e31 2022-10-23 thomas pid_t pid;
65 3efd8e31 2022-10-23 thomas const char *title;
66 3efd8e31 2022-10-23 thomas struct got_repository *repo;
67 3efd8e31 2022-10-23 thomas int *pack_fds;
68 3efd8e31 2022-10-23 thomas int *temp_fds;
69 62ee7d94 2023-01-10 thomas int session_fd;
70 62ee7d94 2023-01-10 thomas struct gotd_imsgev session_iev;
71 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_tag_namespaces;
72 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_branch_namespaces;
73 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_branches;
74 3efd8e31 2022-10-23 thomas } repo_write;
76 3efd8e31 2022-10-23 thomas struct gotd_ref_update {
77 3efd8e31 2022-10-23 thomas STAILQ_ENTRY(gotd_ref_update) entry;
78 3efd8e31 2022-10-23 thomas struct got_reference *ref;
79 3efd8e31 2022-10-23 thomas int ref_is_new;
80 49563dfb 2023-01-28 thomas int delete_ref;
81 3efd8e31 2022-10-23 thomas struct got_object_id old_id;
82 3efd8e31 2022-10-23 thomas struct got_object_id new_id;
84 3efd8e31 2022-10-23 thomas STAILQ_HEAD(gotd_ref_updates, gotd_ref_update);
86 9148c8a7 2023-01-02 thomas static struct repo_write_client {
87 3efd8e31 2022-10-23 thomas uint32_t id;
89 3efd8e31 2022-10-23 thomas int pack_pipe[2];
90 3efd8e31 2022-10-23 thomas struct got_pack pack;
91 3efd8e31 2022-10-23 thomas uint8_t pack_sha1[SHA1_DIGEST_LENGTH];
92 3efd8e31 2022-10-23 thomas int packidx_fd;
93 3efd8e31 2022-10-23 thomas struct gotd_ref_updates ref_updates;
94 3efd8e31 2022-10-23 thomas int nref_updates;
95 49563dfb 2023-01-28 thomas int nref_del;
96 d98779cd 2023-01-19 thomas int nref_new;
97 9148c8a7 2023-01-02 thomas } repo_write_client;
99 3efd8e31 2022-10-23 thomas static volatile sig_atomic_t sigint_received;
100 3efd8e31 2022-10-23 thomas static volatile sig_atomic_t sigterm_received;
102 3efd8e31 2022-10-23 thomas static void
103 3efd8e31 2022-10-23 thomas catch_sigint(int signo)
105 3efd8e31 2022-10-23 thomas sigint_received = 1;
108 3efd8e31 2022-10-23 thomas static void
109 3efd8e31 2022-10-23 thomas catch_sigterm(int signo)
111 3efd8e31 2022-10-23 thomas sigterm_received = 1;
114 3efd8e31 2022-10-23 thomas static const struct got_error *
115 3efd8e31 2022-10-23 thomas check_cancelled(void *arg)
117 3efd8e31 2022-10-23 thomas if (sigint_received || sigterm_received)
118 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_CANCELLED);
120 3efd8e31 2022-10-23 thomas return NULL;
123 3efd8e31 2022-10-23 thomas static const struct got_error *
124 3efd8e31 2022-10-23 thomas send_peeled_tag_ref(struct got_reference *ref, struct got_object *obj,
125 3efd8e31 2022-10-23 thomas struct imsgbuf *ibuf)
127 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
128 3efd8e31 2022-10-23 thomas struct got_tag_object *tag;
129 3efd8e31 2022-10-23 thomas size_t namelen, len;
130 3efd8e31 2022-10-23 thomas char *peeled_refname = NULL;
131 3efd8e31 2022-10-23 thomas struct got_object_id *id;
132 3efd8e31 2022-10-23 thomas struct ibuf *wbuf;
134 3efd8e31 2022-10-23 thomas err = got_object_tag_open(&tag, repo_write.repo, obj);
136 3efd8e31 2022-10-23 thomas return err;
138 3efd8e31 2022-10-23 thomas if (asprintf(&peeled_refname, "%s^{}", got_ref_get_name(ref)) == -1) {
139 3efd8e31 2022-10-23 thomas err = got_error_from_errno("asprintf");
140 3efd8e31 2022-10-23 thomas goto done;
143 3efd8e31 2022-10-23 thomas id = got_object_tag_get_object_id(tag);
144 3efd8e31 2022-10-23 thomas namelen = strlen(peeled_refname);
146 3efd8e31 2022-10-23 thomas len = sizeof(struct gotd_imsg_ref) + namelen;
147 3efd8e31 2022-10-23 thomas if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
148 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_NO_SPACE);
149 3efd8e31 2022-10-23 thomas goto done;
152 3efd8e31 2022-10-23 thomas wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
153 3efd8e31 2022-10-23 thomas repo_write.pid, len);
154 3efd8e31 2022-10-23 thomas if (wbuf == NULL) {
155 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_create REF");
156 3efd8e31 2022-10-23 thomas goto done;
159 3efd8e31 2022-10-23 thomas /* Keep in sync with struct gotd_imsg_ref definition. */
160 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1) {
161 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_add REF");
162 3efd8e31 2022-10-23 thomas goto done;
164 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1) {
165 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_add REF");
166 3efd8e31 2022-10-23 thomas goto done;
168 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, peeled_refname, namelen) == -1) {
169 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_add REF");
170 3efd8e31 2022-10-23 thomas goto done;
173 3efd8e31 2022-10-23 thomas wbuf->fd = -1;
174 3efd8e31 2022-10-23 thomas imsg_close(ibuf, wbuf);
176 3efd8e31 2022-10-23 thomas got_object_tag_close(tag);
177 3efd8e31 2022-10-23 thomas return err;
180 3efd8e31 2022-10-23 thomas static const struct got_error *
181 3efd8e31 2022-10-23 thomas send_ref(struct got_reference *ref, struct imsgbuf *ibuf)
183 3efd8e31 2022-10-23 thomas const struct got_error *err;
184 3efd8e31 2022-10-23 thomas const char *refname = got_ref_get_name(ref);
185 3efd8e31 2022-10-23 thomas size_t namelen;
186 3efd8e31 2022-10-23 thomas struct got_object_id *id = NULL;
187 3efd8e31 2022-10-23 thomas struct got_object *obj = NULL;
188 3efd8e31 2022-10-23 thomas size_t len;
189 3efd8e31 2022-10-23 thomas struct ibuf *wbuf;
191 3efd8e31 2022-10-23 thomas namelen = strlen(refname);
193 3efd8e31 2022-10-23 thomas len = sizeof(struct gotd_imsg_ref) + namelen;
194 3efd8e31 2022-10-23 thomas if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
195 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_NO_SPACE);
197 3efd8e31 2022-10-23 thomas err = got_ref_resolve(&id, repo_write.repo, ref);
199 3efd8e31 2022-10-23 thomas return err;
201 3efd8e31 2022-10-23 thomas wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
202 3efd8e31 2022-10-23 thomas repo_write.pid, len);
203 3efd8e31 2022-10-23 thomas if (wbuf == NULL) {
204 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_create REF");
205 3efd8e31 2022-10-23 thomas goto done;
208 3efd8e31 2022-10-23 thomas /* Keep in sync with struct gotd_imsg_ref definition. */
209 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1)
210 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add REF");
211 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1)
212 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add REF");
213 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, refname, namelen) == -1)
214 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add REF");
216 3efd8e31 2022-10-23 thomas wbuf->fd = -1;
217 3efd8e31 2022-10-23 thomas imsg_close(ibuf, wbuf);
219 3efd8e31 2022-10-23 thomas err = got_object_open(&obj, repo_write.repo, id);
221 3efd8e31 2022-10-23 thomas goto done;
222 3efd8e31 2022-10-23 thomas if (obj->type == GOT_OBJ_TYPE_TAG)
223 3efd8e31 2022-10-23 thomas err = send_peeled_tag_ref(ref, obj, ibuf);
226 3efd8e31 2022-10-23 thomas got_object_close(obj);
227 3efd8e31 2022-10-23 thomas free(id);
228 3efd8e31 2022-10-23 thomas return err;
231 3efd8e31 2022-10-23 thomas static const struct got_error *
232 9148c8a7 2023-01-02 thomas list_refs(struct imsg *imsg)
234 3efd8e31 2022-10-23 thomas const struct got_error *err;
235 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
236 3efd8e31 2022-10-23 thomas struct got_reflist_head refs;
237 3efd8e31 2022-10-23 thomas struct got_reflist_entry *re;
238 3efd8e31 2022-10-23 thomas struct gotd_imsg_list_refs_internal ireq;
239 3efd8e31 2022-10-23 thomas size_t datalen;
240 3efd8e31 2022-10-23 thomas struct gotd_imsg_reflist irefs;
241 3efd8e31 2022-10-23 thomas struct imsgbuf ibuf;
242 3efd8e31 2022-10-23 thomas int client_fd = imsg->fd;
244 3efd8e31 2022-10-23 thomas TAILQ_INIT(&refs);
246 3efd8e31 2022-10-23 thomas if (client_fd == -1)
247 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
249 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
250 3efd8e31 2022-10-23 thomas if (datalen != sizeof(ireq))
251 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
252 3efd8e31 2022-10-23 thomas memcpy(&ireq, imsg->data, sizeof(ireq));
254 9148c8a7 2023-01-02 thomas if (ireq.client_id == 0)
255 9148c8a7 2023-01-02 thomas return got_error(GOT_ERR_CLIENT_ID);
256 9148c8a7 2023-01-02 thomas if (client->id != 0) {
257 9148c8a7 2023-01-02 thomas return got_error_msg(GOT_ERR_CLIENT_ID,
258 9148c8a7 2023-01-02 thomas "duplicate list-refs request");
260 9148c8a7 2023-01-02 thomas client->id = ireq.client_id;
261 9148c8a7 2023-01-02 thomas client->fd = client_fd;
262 9148c8a7 2023-01-02 thomas client->nref_updates = 0;
263 49563dfb 2023-01-28 thomas client->nref_del = 0;
264 d98779cd 2023-01-19 thomas client->nref_new = 0;
266 3efd8e31 2022-10-23 thomas imsg_init(&ibuf, client_fd);
268 3efd8e31 2022-10-23 thomas err = got_ref_list(&refs, repo_write.repo, "",
269 3efd8e31 2022-10-23 thomas got_ref_cmp_by_name, NULL);
271 3efd8e31 2022-10-23 thomas return err;
273 3efd8e31 2022-10-23 thomas memset(&irefs, 0, sizeof(irefs));
274 3efd8e31 2022-10-23 thomas TAILQ_FOREACH(re, &refs, entry) {
275 3efd8e31 2022-10-23 thomas struct got_object_id *id;
276 3efd8e31 2022-10-23 thomas int obj_type;
278 3efd8e31 2022-10-23 thomas if (got_ref_is_symbolic(re->ref))
279 3efd8e31 2022-10-23 thomas continue;
281 3efd8e31 2022-10-23 thomas irefs.nrefs++;
283 3efd8e31 2022-10-23 thomas /* Account for a peeled tag refs. */
284 3efd8e31 2022-10-23 thomas err = got_ref_resolve(&id, repo_write.repo, re->ref);
286 3efd8e31 2022-10-23 thomas goto done;
287 8652e561 2023-01-14 thomas err = got_object_get_type(&obj_type, repo_write.repo, id);
288 3efd8e31 2022-10-23 thomas free(id);
290 3efd8e31 2022-10-23 thomas goto done;
291 3efd8e31 2022-10-23 thomas if (obj_type == GOT_OBJ_TYPE_TAG)
292 3efd8e31 2022-10-23 thomas irefs.nrefs++;
295 3efd8e31 2022-10-23 thomas if (imsg_compose(&ibuf, GOTD_IMSG_REFLIST, PROC_REPO_WRITE,
296 3efd8e31 2022-10-23 thomas repo_write.pid, -1, &irefs, sizeof(irefs)) == -1) {
297 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_compose REFLIST");
298 3efd8e31 2022-10-23 thomas goto done;
301 3efd8e31 2022-10-23 thomas TAILQ_FOREACH(re, &refs, entry) {
302 3efd8e31 2022-10-23 thomas if (got_ref_is_symbolic(re->ref))
303 3efd8e31 2022-10-23 thomas continue;
304 3efd8e31 2022-10-23 thomas err = send_ref(re->ref, &ibuf);
306 3efd8e31 2022-10-23 thomas goto done;
309 3efd8e31 2022-10-23 thomas err = gotd_imsg_flush(&ibuf);
311 3efd8e31 2022-10-23 thomas got_ref_list_free(&refs);
312 3efd8e31 2022-10-23 thomas imsg_clear(&ibuf);
313 3efd8e31 2022-10-23 thomas return err;
316 3efd8e31 2022-10-23 thomas static const struct got_error *
317 6d7eb4f7 2023-04-04 thomas validate_namespace(const char *namespace)
319 3efd8e31 2022-10-23 thomas size_t len = strlen(namespace);
321 3efd8e31 2022-10-23 thomas if (len < 5 || strncmp("refs/", namespace, 5) != 0 ||
322 3efd8e31 2022-10-23 thomas namespace[len -1] != '/') {
323 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_BAD_REF_NAME,
324 3efd8e31 2022-10-23 thomas "reference namespace '%s'", namespace);
327 6d7eb4f7 2023-04-04 thomas return NULL;
330 6d7eb4f7 2023-04-04 thomas static const struct got_error *
331 6d7eb4f7 2023-04-04 thomas protect_ref_namespace(const char *refname, const char *namespace)
333 6d7eb4f7 2023-04-04 thomas const struct got_error *err;
335 6d7eb4f7 2023-04-04 thomas err = validate_namespace(namespace);
337 6d7eb4f7 2023-04-04 thomas return err;
339 6d7eb4f7 2023-04-04 thomas if (strncmp(namespace, refname, strlen(namespace)) == 0)
340 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_REFS_PROTECTED, "%s", namespace);
342 3efd8e31 2022-10-23 thomas return NULL;
345 3efd8e31 2022-10-23 thomas static const struct got_error *
346 6d7eb4f7 2023-04-04 thomas verify_object_type(struct got_object_id *id, int expected_obj_type,
347 6d7eb4f7 2023-04-04 thomas struct got_pack *pack, struct got_packidx *packidx)
349 6d7eb4f7 2023-04-04 thomas const struct got_error *err;
350 6d7eb4f7 2023-04-04 thomas char hex[SHA1_DIGEST_STRING_LENGTH];
351 6d7eb4f7 2023-04-04 thomas struct got_object *obj;
353 6d7eb4f7 2023-04-04 thomas const char *typestr;
355 6d7eb4f7 2023-04-04 thomas idx = got_packidx_get_object_idx(packidx, id);
356 6d7eb4f7 2023-04-04 thomas if (idx == -1) {
357 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(id->sha1, hex, sizeof(hex));
358 6d7eb4f7 2023-04-04 thomas return got_error_fmt(GOT_ERR_BAD_PACKFILE,
359 6d7eb4f7 2023-04-04 thomas "object %s is missing from pack file", hex);
362 6d7eb4f7 2023-04-04 thomas err = got_object_open_from_packfile(&obj, id, pack, packidx,
363 6d7eb4f7 2023-04-04 thomas idx, repo_write.repo);
365 6d7eb4f7 2023-04-04 thomas return err;
367 6d7eb4f7 2023-04-04 thomas if (obj->type != expected_obj_type) {
368 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(id->sha1, hex, sizeof(hex));
369 6d7eb4f7 2023-04-04 thomas got_object_type_label(&typestr, expected_obj_type);
370 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_OBJ_TYPE,
371 6d7eb4f7 2023-04-04 thomas "%s is not pointing at a %s object", hex, typestr);
373 6d7eb4f7 2023-04-04 thomas got_object_close(obj);
374 6d7eb4f7 2023-04-04 thomas return err;
377 6d7eb4f7 2023-04-04 thomas static const struct got_error *
378 6d7eb4f7 2023-04-04 thomas protect_tag_namespace(const char *namespace, struct got_pack *pack,
379 6d7eb4f7 2023-04-04 thomas struct got_packidx *packidx, struct gotd_ref_update *ref_update)
381 6d7eb4f7 2023-04-04 thomas const struct got_error *err;
383 6d7eb4f7 2023-04-04 thomas err = validate_namespace(namespace);
385 6d7eb4f7 2023-04-04 thomas return err;
387 6d7eb4f7 2023-04-04 thomas if (strncmp(namespace, got_ref_get_name(ref_update->ref),
388 6d7eb4f7 2023-04-04 thomas strlen(namespace)) != 0)
389 6d7eb4f7 2023-04-04 thomas return NULL;
391 6d7eb4f7 2023-04-04 thomas if (!ref_update->ref_is_new)
392 6d7eb4f7 2023-04-04 thomas return got_error_fmt(GOT_ERR_REFS_PROTECTED, "%s", namespace);
394 6d7eb4f7 2023-04-04 thomas return verify_object_type(&ref_update->new_id, GOT_OBJ_TYPE_TAG,
395 6d7eb4f7 2023-04-04 thomas pack, packidx);
398 6d7eb4f7 2023-04-04 thomas static const struct got_error *
399 6d7eb4f7 2023-04-04 thomas protect_require_yca(struct got_object_id *tip_id,
400 6d7eb4f7 2023-04-04 thomas size_t max_commits_to_traverse, struct got_pack *pack,
401 6d7eb4f7 2023-04-04 thomas struct got_packidx *packidx, struct got_reference *ref)
403 6d7eb4f7 2023-04-04 thomas const struct got_error *err;
404 6d7eb4f7 2023-04-04 thomas uint8_t *buf = NULL;
405 6d7eb4f7 2023-04-04 thomas size_t len;
406 6d7eb4f7 2023-04-04 thomas struct got_object_id *expected_yca_id = NULL;
407 6d7eb4f7 2023-04-04 thomas struct got_object *obj = NULL;
408 6d7eb4f7 2023-04-04 thomas struct got_commit_object *commit = NULL;
409 6d7eb4f7 2023-04-04 thomas char hex[SHA1_DIGEST_STRING_LENGTH];
410 6d7eb4f7 2023-04-04 thomas const struct got_object_id_queue *parent_ids;
411 6d7eb4f7 2023-04-04 thomas struct got_object_id_queue ids;
412 6d7eb4f7 2023-04-04 thomas struct got_object_qid *pid, *qid;
413 6d7eb4f7 2023-04-04 thomas struct got_object_idset *traversed_set = NULL;
414 6d7eb4f7 2023-04-04 thomas int found_yca = 0, obj_type;
416 6d7eb4f7 2023-04-04 thomas STAILQ_INIT(&ids);
418 6d7eb4f7 2023-04-04 thomas err = got_ref_resolve(&expected_yca_id, repo_write.repo, ref);
420 6d7eb4f7 2023-04-04 thomas return err;
422 6d7eb4f7 2023-04-04 thomas err = got_object_get_type(&obj_type, repo_write.repo, expected_yca_id);
424 6d7eb4f7 2023-04-04 thomas goto done;
426 6d7eb4f7 2023-04-04 thomas if (obj_type != GOT_OBJ_TYPE_COMMIT) {
427 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(expected_yca_id->sha1, hex, sizeof(hex));
428 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_OBJ_TYPE,
429 6d7eb4f7 2023-04-04 thomas "%s is not pointing at a commit object", hex);
430 6d7eb4f7 2023-04-04 thomas goto done;
433 6d7eb4f7 2023-04-04 thomas traversed_set = got_object_idset_alloc();
434 6d7eb4f7 2023-04-04 thomas if (traversed_set == NULL) {
435 6d7eb4f7 2023-04-04 thomas err = got_error_from_errno("got_object_idset_alloc");
436 6d7eb4f7 2023-04-04 thomas goto done;
439 6d7eb4f7 2023-04-04 thomas err = got_object_qid_alloc(&qid, tip_id);
441 6d7eb4f7 2023-04-04 thomas goto done;
442 6d7eb4f7 2023-04-04 thomas STAILQ_INSERT_TAIL(&ids, qid, entry);
443 6d7eb4f7 2023-04-04 thomas while (!STAILQ_EMPTY(&ids)) {
444 6d7eb4f7 2023-04-04 thomas err = check_cancelled(NULL);
448 6d7eb4f7 2023-04-04 thomas qid = STAILQ_FIRST(&ids);
449 6d7eb4f7 2023-04-04 thomas if (got_object_id_cmp(&qid->id, expected_yca_id) == 0) {
450 6d7eb4f7 2023-04-04 thomas found_yca = 1;
454 6d7eb4f7 2023-04-04 thomas if (got_object_idset_num_elements(traversed_set) >=
455 6d7eb4f7 2023-04-04 thomas max_commits_to_traverse)
458 6d7eb4f7 2023-04-04 thomas if (got_object_idset_contains(traversed_set, &qid->id)) {
459 6d7eb4f7 2023-04-04 thomas STAILQ_REMOVE_HEAD(&ids, entry);
460 6d7eb4f7 2023-04-04 thomas got_object_qid_free(qid);
461 6d7eb4f7 2023-04-04 thomas qid = NULL;
462 6d7eb4f7 2023-04-04 thomas continue;
464 6d7eb4f7 2023-04-04 thomas err = got_object_idset_add(traversed_set, &qid->id, NULL);
466 6d7eb4f7 2023-04-04 thomas goto done;
468 6d7eb4f7 2023-04-04 thomas err = got_object_open(&obj, repo_write.repo, &qid->id);
469 6d7eb4f7 2023-04-04 thomas if (err && err->code != GOT_ERR_NO_OBJ)
470 6d7eb4f7 2023-04-04 thomas goto done;
471 6d7eb4f7 2023-04-04 thomas err = NULL;
472 6d7eb4f7 2023-04-04 thomas if (obj) {
473 6d7eb4f7 2023-04-04 thomas err = got_object_commit_open(&commit, repo_write.repo,
476 6d7eb4f7 2023-04-04 thomas goto done;
480 6d7eb4f7 2023-04-04 thomas idx = got_packidx_get_object_idx(packidx, &qid->id);
481 6d7eb4f7 2023-04-04 thomas if (idx == -1) {
482 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(qid->id.sha1,
483 6d7eb4f7 2023-04-04 thomas hex, sizeof(hex));
484 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_BAD_PACKFILE,
485 6d7eb4f7 2023-04-04 thomas "object %s is missing from pack file", hex);
486 6d7eb4f7 2023-04-04 thomas goto done;
489 6d7eb4f7 2023-04-04 thomas err = got_object_open_from_packfile(&obj, &qid->id,
490 6d7eb4f7 2023-04-04 thomas pack, packidx, idx, repo_write.repo);
492 6d7eb4f7 2023-04-04 thomas goto done;
494 6d7eb4f7 2023-04-04 thomas if (obj->type != GOT_OBJ_TYPE_COMMIT) {
495 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(qid->id.sha1,
496 6d7eb4f7 2023-04-04 thomas hex, sizeof(hex));
497 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_OBJ_TYPE,
498 6d7eb4f7 2023-04-04 thomas "%s is not pointing at a commit object",
500 6d7eb4f7 2023-04-04 thomas goto done;
503 6d7eb4f7 2023-04-04 thomas err = got_packfile_extract_object_to_mem(&buf, &len,
504 6d7eb4f7 2023-04-04 thomas obj, pack);
506 6d7eb4f7 2023-04-04 thomas goto done;
508 6d7eb4f7 2023-04-04 thomas err = got_object_parse_commit(&commit, buf, len);
510 6d7eb4f7 2023-04-04 thomas goto done;
512 6d7eb4f7 2023-04-04 thomas free(buf);
513 6d7eb4f7 2023-04-04 thomas buf = NULL;
516 6d7eb4f7 2023-04-04 thomas got_object_close(obj);
517 6d7eb4f7 2023-04-04 thomas obj = NULL;
519 6d7eb4f7 2023-04-04 thomas STAILQ_REMOVE_HEAD(&ids, entry);
520 6d7eb4f7 2023-04-04 thomas got_object_qid_free(qid);
521 6d7eb4f7 2023-04-04 thomas qid = NULL;
523 6d7eb4f7 2023-04-04 thomas if (got_object_commit_get_nparents(commit) == 0)
526 6d7eb4f7 2023-04-04 thomas parent_ids = got_object_commit_get_parent_ids(commit);
527 6d7eb4f7 2023-04-04 thomas STAILQ_FOREACH(pid, parent_ids, entry) {
528 6d7eb4f7 2023-04-04 thomas err = check_cancelled(NULL);
530 6d7eb4f7 2023-04-04 thomas goto done;
531 6d7eb4f7 2023-04-04 thomas err = got_object_qid_alloc(&qid, &pid->id);
533 6d7eb4f7 2023-04-04 thomas goto done;
534 6d7eb4f7 2023-04-04 thomas STAILQ_INSERT_TAIL(&ids, qid, entry);
535 6d7eb4f7 2023-04-04 thomas qid = NULL;
537 6d7eb4f7 2023-04-04 thomas got_object_commit_close(commit);
538 6d7eb4f7 2023-04-04 thomas commit = NULL;
541 6d7eb4f7 2023-04-04 thomas if (!found_yca) {
542 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_REF_PROTECTED, "%s",
543 6d7eb4f7 2023-04-04 thomas got_ref_get_name(ref));
546 6d7eb4f7 2023-04-04 thomas got_object_idset_free(traversed_set);
547 6d7eb4f7 2023-04-04 thomas got_object_id_queue_free(&ids);
548 6d7eb4f7 2023-04-04 thomas free(buf);
550 6d7eb4f7 2023-04-04 thomas got_object_close(obj);
551 6d7eb4f7 2023-04-04 thomas if (commit)
552 6d7eb4f7 2023-04-04 thomas got_object_commit_close(commit);
553 6d7eb4f7 2023-04-04 thomas free(expected_yca_id);
554 6d7eb4f7 2023-04-04 thomas return err;
557 6d7eb4f7 2023-04-04 thomas static const struct got_error *
558 6d7eb4f7 2023-04-04 thomas protect_branch_namespace(const char *namespace, struct got_pack *pack,
559 6d7eb4f7 2023-04-04 thomas struct got_packidx *packidx, struct gotd_ref_update *ref_update)
561 6d7eb4f7 2023-04-04 thomas const struct got_error *err;
563 6d7eb4f7 2023-04-04 thomas err = validate_namespace(namespace);
565 6d7eb4f7 2023-04-04 thomas return err;
567 6d7eb4f7 2023-04-04 thomas if (strncmp(namespace, got_ref_get_name(ref_update->ref),
568 6d7eb4f7 2023-04-04 thomas strlen(namespace)) != 0)
569 6d7eb4f7 2023-04-04 thomas return NULL;
571 6d7eb4f7 2023-04-04 thomas if (ref_update->ref_is_new) {
572 6d7eb4f7 2023-04-04 thomas return verify_object_type(&ref_update->new_id,
573 6d7eb4f7 2023-04-04 thomas GOT_OBJ_TYPE_COMMIT, pack, packidx);
576 6d7eb4f7 2023-04-04 thomas return protect_require_yca(&ref_update->new_id,
577 6d7eb4f7 2023-04-04 thomas be32toh(packidx->hdr.fanout_table[0xff]), pack, packidx,
578 6d7eb4f7 2023-04-04 thomas ref_update->ref);
581 6d7eb4f7 2023-04-04 thomas static const struct got_error *
582 6d7eb4f7 2023-04-04 thomas protect_branch(const char *refname, struct got_pack *pack,
583 6d7eb4f7 2023-04-04 thomas struct got_packidx *packidx, struct gotd_ref_update *ref_update)
585 6d7eb4f7 2023-04-04 thomas if (strcmp(refname, got_ref_get_name(ref_update->ref)) != 0)
586 6d7eb4f7 2023-04-04 thomas return NULL;
588 6d7eb4f7 2023-04-04 thomas /* Always allow new branches to be created. */
589 6d7eb4f7 2023-04-04 thomas if (ref_update->ref_is_new) {
590 6d7eb4f7 2023-04-04 thomas return verify_object_type(&ref_update->new_id,
591 6d7eb4f7 2023-04-04 thomas GOT_OBJ_TYPE_COMMIT, pack, packidx);
594 6d7eb4f7 2023-04-04 thomas return protect_require_yca(&ref_update->new_id,
595 6d7eb4f7 2023-04-04 thomas be32toh(packidx->hdr.fanout_table[0xff]), pack, packidx,
596 6d7eb4f7 2023-04-04 thomas ref_update->ref);
599 6d7eb4f7 2023-04-04 thomas static const struct got_error *
600 9148c8a7 2023-01-02 thomas recv_ref_update(struct imsg *imsg)
602 49563dfb 2023-01-28 thomas static const char zero_id[SHA1_DIGEST_LENGTH];
603 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
604 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
605 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_update iref;
606 3efd8e31 2022-10-23 thomas size_t datalen;
607 3efd8e31 2022-10-23 thomas char *refname = NULL;
608 3efd8e31 2022-10-23 thomas struct got_reference *ref = NULL;
609 3efd8e31 2022-10-23 thomas struct got_object_id *id = NULL;
610 3efd8e31 2022-10-23 thomas struct imsgbuf ibuf;
611 3efd8e31 2022-10-23 thomas struct gotd_ref_update *ref_update = NULL;
613 3efd8e31 2022-10-23 thomas log_debug("ref-update received");
615 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
616 3efd8e31 2022-10-23 thomas if (datalen < sizeof(iref))
617 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
618 3efd8e31 2022-10-23 thomas memcpy(&iref, imsg->data, sizeof(iref));
619 3efd8e31 2022-10-23 thomas if (datalen != sizeof(iref) + iref.name_len)
620 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
622 9148c8a7 2023-01-02 thomas imsg_init(&ibuf, client->fd);
624 fcbb06bf 2023-01-14 thomas refname = strndup(imsg->data + sizeof(iref), iref.name_len);
625 3efd8e31 2022-10-23 thomas if (refname == NULL)
626 fcbb06bf 2023-01-14 thomas return got_error_from_errno("strndup");
628 3efd8e31 2022-10-23 thomas ref_update = calloc(1, sizeof(*ref_update));
629 3efd8e31 2022-10-23 thomas if (ref_update == NULL) {
630 3efd8e31 2022-10-23 thomas err = got_error_from_errno("malloc");
631 3efd8e31 2022-10-23 thomas goto done;
634 3efd8e31 2022-10-23 thomas memcpy(ref_update->old_id.sha1, iref.old_id, SHA1_DIGEST_LENGTH);
635 3efd8e31 2022-10-23 thomas memcpy(ref_update->new_id.sha1, iref.new_id, SHA1_DIGEST_LENGTH);
637 3efd8e31 2022-10-23 thomas err = got_ref_open(&ref, repo_write.repo, refname, 0);
638 3efd8e31 2022-10-23 thomas if (err) {
639 3efd8e31 2022-10-23 thomas if (err->code != GOT_ERR_NOT_REF)
640 3efd8e31 2022-10-23 thomas goto done;
641 6d7eb4f7 2023-04-04 thomas if (memcmp(ref_update->new_id.sha1,
642 6d7eb4f7 2023-04-04 thomas zero_id, sizeof(zero_id)) == 0) {
643 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_BAD_OBJ_ID,
644 6d7eb4f7 2023-04-04 thomas "%s", refname);
645 6d7eb4f7 2023-04-04 thomas goto done;
647 3efd8e31 2022-10-23 thomas err = got_ref_alloc(&ref, refname, &ref_update->new_id);
649 3efd8e31 2022-10-23 thomas goto done;
650 3efd8e31 2022-10-23 thomas ref_update->ref_is_new = 1;
651 d98779cd 2023-01-19 thomas client->nref_new++;
653 3efd8e31 2022-10-23 thomas if (got_ref_is_symbolic(ref)) {
654 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_BAD_REF_TYPE,
655 3efd8e31 2022-10-23 thomas "'%s' is a symbolic reference and cannot "
656 3efd8e31 2022-10-23 thomas "be updated", got_ref_get_name(ref));
657 3efd8e31 2022-10-23 thomas goto done;
659 3efd8e31 2022-10-23 thomas if (strncmp("refs/", got_ref_get_name(ref), 5) != 0) {
660 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_BAD_REF_NAME,
661 3efd8e31 2022-10-23 thomas "%s: does not begin with 'refs/'",
662 3efd8e31 2022-10-23 thomas got_ref_get_name(ref));
663 3efd8e31 2022-10-23 thomas goto done;
666 6d7eb4f7 2023-04-04 thomas err = protect_ref_namespace(got_ref_get_name(ref), "refs/got/");
668 3efd8e31 2022-10-23 thomas goto done;
669 6d7eb4f7 2023-04-04 thomas err = protect_ref_namespace(got_ref_get_name(ref), "refs/remotes/");
671 3efd8e31 2022-10-23 thomas goto done;
673 3efd8e31 2022-10-23 thomas if (!ref_update->ref_is_new) {
675 3efd8e31 2022-10-23 thomas * Ensure the client's idea of this update is still valid.
676 3efd8e31 2022-10-23 thomas * At this point we can only return an error, to prevent
677 3efd8e31 2022-10-23 thomas * the client from uploading a pack file which will likely
678 3efd8e31 2022-10-23 thomas * have to be discarded.
680 3efd8e31 2022-10-23 thomas err = got_ref_resolve(&id, repo_write.repo, ref);
682 3efd8e31 2022-10-23 thomas goto done;
684 3efd8e31 2022-10-23 thomas if (got_object_id_cmp(id, &ref_update->old_id) != 0) {
685 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_REF_BUSY,
686 3efd8e31 2022-10-23 thomas "%s has been modified by someone else "
687 3efd8e31 2022-10-23 thomas "while transaction was in progress",
688 3efd8e31 2022-10-23 thomas got_ref_get_name(ref));
689 3efd8e31 2022-10-23 thomas goto done;
693 3efd8e31 2022-10-23 thomas gotd_imsg_send_ack(&ref_update->new_id, &ibuf, PROC_REPO_WRITE,
694 3efd8e31 2022-10-23 thomas repo_write.pid);
696 3efd8e31 2022-10-23 thomas ref_update->ref = ref;
697 49563dfb 2023-01-28 thomas if (memcmp(ref_update->new_id.sha1, zero_id, sizeof(zero_id)) == 0) {
698 49563dfb 2023-01-28 thomas ref_update->delete_ref = 1;
699 49563dfb 2023-01-28 thomas client->nref_del++;
701 9148c8a7 2023-01-02 thomas STAILQ_INSERT_HEAD(&client->ref_updates, ref_update, entry);
702 9148c8a7 2023-01-02 thomas client->nref_updates++;
703 3efd8e31 2022-10-23 thomas ref = NULL;
704 3efd8e31 2022-10-23 thomas ref_update = NULL;
707 3efd8e31 2022-10-23 thomas got_ref_close(ref);
708 3efd8e31 2022-10-23 thomas free(ref_update);
709 3efd8e31 2022-10-23 thomas free(refname);
710 3efd8e31 2022-10-23 thomas free(id);
711 3efd8e31 2022-10-23 thomas return err;
714 3efd8e31 2022-10-23 thomas static const struct got_error *
715 3efd8e31 2022-10-23 thomas pack_index_progress(void *arg, uint32_t nobj_total, uint32_t nobj_indexed,
716 3efd8e31 2022-10-23 thomas uint32_t nobj_loose, uint32_t nobj_resolved)
718 3efd8e31 2022-10-23 thomas int p_indexed = 0, p_resolved = 0;
719 3efd8e31 2022-10-23 thomas int nobj_delta = nobj_total - nobj_loose;
721 3efd8e31 2022-10-23 thomas if (nobj_total > 0)
722 3efd8e31 2022-10-23 thomas p_indexed = (nobj_indexed * 100) / nobj_total;
724 3efd8e31 2022-10-23 thomas if (nobj_delta > 0)
725 3efd8e31 2022-10-23 thomas p_resolved = (nobj_resolved * 100) / nobj_delta;
727 3efd8e31 2022-10-23 thomas if (p_resolved > 0) {
728 3efd8e31 2022-10-23 thomas log_debug("indexing %d objects %d%%; resolving %d deltas %d%%",
729 3efd8e31 2022-10-23 thomas nobj_total, p_indexed, nobj_delta, p_resolved);
731 3efd8e31 2022-10-23 thomas log_debug("indexing %d objects %d%%", nobj_total, p_indexed);
733 3efd8e31 2022-10-23 thomas return NULL;
736 3efd8e31 2022-10-23 thomas static const struct got_error *
737 3efd8e31 2022-10-23 thomas read_more_pack_stream(int infd, BUF *buf, size_t minsize)
739 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
740 3efd8e31 2022-10-23 thomas uint8_t readahead[65536];
741 3efd8e31 2022-10-23 thomas size_t have, newlen;
743 3efd8e31 2022-10-23 thomas err = got_poll_read_full(infd, &have,
744 3efd8e31 2022-10-23 thomas readahead, sizeof(readahead), minsize);
746 3efd8e31 2022-10-23 thomas return err;
748 3efd8e31 2022-10-23 thomas err = buf_append(&newlen, buf, readahead, have);
750 3efd8e31 2022-10-23 thomas return err;
751 8652e561 2023-01-14 thomas return NULL;
754 3efd8e31 2022-10-23 thomas static const struct got_error *
755 3efd8e31 2022-10-23 thomas copy_object_type_and_size(uint8_t *type, uint64_t *size, int infd, int outfd,
756 b16893ba 2023-02-24 thomas off_t *outsize, BUF *buf, size_t *buf_pos, struct got_hash *ctx)
758 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
759 3efd8e31 2022-10-23 thomas uint8_t t = 0;
760 3efd8e31 2022-10-23 thomas uint64_t s = 0;
761 3efd8e31 2022-10-23 thomas uint8_t sizebuf[8];
762 3efd8e31 2022-10-23 thomas size_t i = 0;
763 3efd8e31 2022-10-23 thomas off_t obj_offset = *outsize;
766 3efd8e31 2022-10-23 thomas /* We do not support size values which don't fit in 64 bit. */
767 3efd8e31 2022-10-23 thomas if (i > 9)
768 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
769 fe3b5495 2022-10-25 thomas "packfile offset %lld", (long long)obj_offset);
771 3efd8e31 2022-10-23 thomas if (buf_len(buf) - *buf_pos < sizeof(sizebuf[0])) {
772 3efd8e31 2022-10-23 thomas err = read_more_pack_stream(infd, buf,
773 3efd8e31 2022-10-23 thomas sizeof(sizebuf[0]));
775 3efd8e31 2022-10-23 thomas return err;
778 3efd8e31 2022-10-23 thomas sizebuf[i] = buf_getc(buf, *buf_pos);
779 3efd8e31 2022-10-23 thomas *buf_pos += sizeof(sizebuf[i]);
781 3efd8e31 2022-10-23 thomas if (i == 0) {
782 3efd8e31 2022-10-23 thomas t = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
783 3efd8e31 2022-10-23 thomas GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
784 3efd8e31 2022-10-23 thomas s = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_VAL_MASK);
786 3efd8e31 2022-10-23 thomas size_t shift = 4 + 7 * (i - 1);
787 3efd8e31 2022-10-23 thomas s |= ((sizebuf[i] & GOT_PACK_OBJ_SIZE_VAL_MASK) <<
791 3efd8e31 2022-10-23 thomas } while (sizebuf[i - 1] & GOT_PACK_OBJ_SIZE_MORE);
793 3efd8e31 2022-10-23 thomas err = got_pack_hwrite(outfd, sizebuf, i, ctx);
795 3efd8e31 2022-10-23 thomas return err;
796 3efd8e31 2022-10-23 thomas *outsize += i;
798 3efd8e31 2022-10-23 thomas *type = t;
799 3efd8e31 2022-10-23 thomas *size = s;
800 3efd8e31 2022-10-23 thomas return NULL;
803 3efd8e31 2022-10-23 thomas static const struct got_error *
804 3efd8e31 2022-10-23 thomas copy_ref_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
805 b16893ba 2023-02-24 thomas struct got_hash *ctx)
807 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
808 3efd8e31 2022-10-23 thomas size_t remain = buf_len(buf) - *buf_pos;
810 3efd8e31 2022-10-23 thomas if (remain < SHA1_DIGEST_LENGTH) {
811 3efd8e31 2022-10-23 thomas err = read_more_pack_stream(infd, buf,
812 3efd8e31 2022-10-23 thomas SHA1_DIGEST_LENGTH - remain);
814 3efd8e31 2022-10-23 thomas return err;
817 3efd8e31 2022-10-23 thomas err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
818 3efd8e31 2022-10-23 thomas SHA1_DIGEST_LENGTH, ctx);
820 3efd8e31 2022-10-23 thomas return err;
822 3efd8e31 2022-10-23 thomas *buf_pos += SHA1_DIGEST_LENGTH;
823 3efd8e31 2022-10-23 thomas return NULL;
826 3efd8e31 2022-10-23 thomas static const struct got_error *
827 3efd8e31 2022-10-23 thomas copy_offset_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
828 b16893ba 2023-02-24 thomas struct got_hash *ctx)
830 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
831 3efd8e31 2022-10-23 thomas uint64_t o = 0;
832 3efd8e31 2022-10-23 thomas uint8_t offbuf[8];
833 3efd8e31 2022-10-23 thomas size_t i = 0;
834 3efd8e31 2022-10-23 thomas off_t obj_offset = *outsize;
837 3efd8e31 2022-10-23 thomas /* We do not support offset values which don't fit in 64 bit. */
838 3efd8e31 2022-10-23 thomas if (i > 8)
839 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
840 fe3b5495 2022-10-25 thomas "packfile offset %lld", (long long)obj_offset);
842 3efd8e31 2022-10-23 thomas if (buf_len(buf) - *buf_pos < sizeof(offbuf[0])) {
843 3efd8e31 2022-10-23 thomas err = read_more_pack_stream(infd, buf,
844 3efd8e31 2022-10-23 thomas sizeof(offbuf[0]));
846 3efd8e31 2022-10-23 thomas return err;
849 3efd8e31 2022-10-23 thomas offbuf[i] = buf_getc(buf, *buf_pos);
850 3efd8e31 2022-10-23 thomas *buf_pos += sizeof(offbuf[i]);
852 3efd8e31 2022-10-23 thomas if (i == 0)
853 3efd8e31 2022-10-23 thomas o = (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
857 3efd8e31 2022-10-23 thomas o += (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
860 3efd8e31 2022-10-23 thomas } while (offbuf[i - 1] & GOT_PACK_OBJ_DELTA_OFF_MORE);
862 3efd8e31 2022-10-23 thomas if (o < sizeof(struct got_packfile_hdr) || o > *outsize)
863 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PACK_OFFSET);
865 3efd8e31 2022-10-23 thomas err = got_pack_hwrite(outfd, offbuf, i, ctx);
867 3efd8e31 2022-10-23 thomas return err;
869 3efd8e31 2022-10-23 thomas *outsize += i;
870 3efd8e31 2022-10-23 thomas return NULL;
873 3efd8e31 2022-10-23 thomas static const struct got_error *
874 3efd8e31 2022-10-23 thomas copy_zstream(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
875 b16893ba 2023-02-24 thomas struct got_hash *ctx)
877 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
878 3efd8e31 2022-10-23 thomas z_stream z;
879 3efd8e31 2022-10-23 thomas int zret;
880 3efd8e31 2022-10-23 thomas char voidbuf[1024];
881 3efd8e31 2022-10-23 thomas size_t consumed_total = 0;
882 3efd8e31 2022-10-23 thomas off_t zstream_offset = *outsize;
884 3efd8e31 2022-10-23 thomas memset(&z, 0, sizeof(z));
886 3efd8e31 2022-10-23 thomas z.zalloc = Z_NULL;
887 3efd8e31 2022-10-23 thomas z.zfree = Z_NULL;
888 3efd8e31 2022-10-23 thomas zret = inflateInit(&z);
889 3efd8e31 2022-10-23 thomas if (zret != Z_OK) {
890 3efd8e31 2022-10-23 thomas if (zret == Z_ERRNO)
891 3efd8e31 2022-10-23 thomas return got_error_from_errno("inflateInit");
892 3efd8e31 2022-10-23 thomas if (zret == Z_MEM_ERROR) {
893 3efd8e31 2022-10-23 thomas errno = ENOMEM;
894 3efd8e31 2022-10-23 thomas return got_error_from_errno("inflateInit");
896 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_DECOMPRESSION,
897 3efd8e31 2022-10-23 thomas "inflateInit failed");
900 3efd8e31 2022-10-23 thomas while (zret != Z_STREAM_END) {
901 3efd8e31 2022-10-23 thomas size_t last_total_in, consumed;
904 3efd8e31 2022-10-23 thomas * Decompress into the void. Object data will be parsed
905 3efd8e31 2022-10-23 thomas * later, when the pack file is indexed. For now, we just
906 3efd8e31 2022-10-23 thomas * want to locate the end of the compressed stream.
908 3efd8e31 2022-10-23 thomas while (zret != Z_STREAM_END && buf_len(buf) - *buf_pos > 0) {
909 3efd8e31 2022-10-23 thomas last_total_in = z.total_in;
910 3efd8e31 2022-10-23 thomas z.next_in = buf_get(buf) + *buf_pos;
911 3efd8e31 2022-10-23 thomas z.avail_in = buf_len(buf) - *buf_pos;
912 3efd8e31 2022-10-23 thomas z.next_out = voidbuf;
913 3efd8e31 2022-10-23 thomas z.avail_out = sizeof(voidbuf);
915 3efd8e31 2022-10-23 thomas zret = inflate(&z, Z_SYNC_FLUSH);
916 3efd8e31 2022-10-23 thomas if (zret != Z_OK && zret != Z_BUF_ERROR &&
917 3efd8e31 2022-10-23 thomas zret != Z_STREAM_END) {
918 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_DECOMPRESSION,
919 fe3b5495 2022-10-25 thomas "packfile offset %lld",
920 fe3b5495 2022-10-25 thomas (long long)zstream_offset);
921 3efd8e31 2022-10-23 thomas goto done;
923 3efd8e31 2022-10-23 thomas consumed = z.total_in - last_total_in;
925 3efd8e31 2022-10-23 thomas err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
926 3efd8e31 2022-10-23 thomas consumed, ctx);
928 3efd8e31 2022-10-23 thomas goto done;
930 3efd8e31 2022-10-23 thomas err = buf_discard(buf, *buf_pos + consumed);
932 3efd8e31 2022-10-23 thomas goto done;
933 3efd8e31 2022-10-23 thomas *buf_pos = 0;
935 3efd8e31 2022-10-23 thomas consumed_total += consumed;
938 3efd8e31 2022-10-23 thomas if (zret != Z_STREAM_END) {
939 3efd8e31 2022-10-23 thomas err = read_more_pack_stream(infd, buf, 1);
941 3efd8e31 2022-10-23 thomas goto done;
945 3efd8e31 2022-10-23 thomas if (err == NULL)
946 3efd8e31 2022-10-23 thomas *outsize += consumed_total;
948 3efd8e31 2022-10-23 thomas inflateEnd(&z);
949 3efd8e31 2022-10-23 thomas return err;
952 3efd8e31 2022-10-23 thomas static const struct got_error *
953 3efd8e31 2022-10-23 thomas validate_object_type(int obj_type)
955 3efd8e31 2022-10-23 thomas switch (obj_type) {
956 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_BLOB:
957 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_COMMIT:
958 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_TREE:
959 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_TAG:
960 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_REF_DELTA:
961 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_OFFSET_DELTA:
962 3efd8e31 2022-10-23 thomas return NULL;
967 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_OBJ_TYPE);
970 3efd8e31 2022-10-23 thomas static const struct got_error *
971 d98779cd 2023-01-19 thomas recv_packdata(off_t *outsize, uint32_t *nobj, uint8_t *sha1,
972 d98779cd 2023-01-19 thomas int infd, int outfd)
974 3efd8e31 2022-10-23 thomas const struct got_error *err;
975 d98779cd 2023-01-19 thomas struct repo_write_client *client = &repo_write_client;
976 3efd8e31 2022-10-23 thomas struct got_packfile_hdr hdr;
977 3efd8e31 2022-10-23 thomas size_t have;
978 d98779cd 2023-01-19 thomas uint32_t nhave = 0;
979 b16893ba 2023-02-24 thomas struct got_hash ctx;
980 3efd8e31 2022-10-23 thomas uint8_t expected_sha1[SHA1_DIGEST_LENGTH];
981 3efd8e31 2022-10-23 thomas char hex[SHA1_DIGEST_STRING_LENGTH];
982 3efd8e31 2022-10-23 thomas BUF *buf = NULL;
983 3efd8e31 2022-10-23 thomas size_t buf_pos = 0, remain;
984 3efd8e31 2022-10-23 thomas ssize_t w;
986 3efd8e31 2022-10-23 thomas *outsize = 0;
987 d98779cd 2023-01-19 thomas *nobj = 0;
989 49563dfb 2023-01-28 thomas /* if only deleting references there's nothing to read */
990 49563dfb 2023-01-28 thomas if (client->nref_updates == client->nref_del)
991 49563dfb 2023-01-28 thomas return NULL;
993 b16893ba 2023-02-24 thomas got_hash_init(&ctx, GOT_HASH_SHA1);
995 3efd8e31 2022-10-23 thomas err = got_poll_read_full(infd, &have, &hdr, sizeof(hdr), sizeof(hdr));
997 3efd8e31 2022-10-23 thomas return err;
998 3efd8e31 2022-10-23 thomas if (have != sizeof(hdr))
999 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_PACKFILE, "short pack file");
1000 3efd8e31 2022-10-23 thomas *outsize += have;
1002 3efd8e31 2022-10-23 thomas if (hdr.signature != htobe32(GOT_PACKFILE_SIGNATURE))
1003 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_PACKFILE,
1004 3efd8e31 2022-10-23 thomas "bad packfile signature");
1005 3efd8e31 2022-10-23 thomas if (hdr.version != htobe32(GOT_PACKFILE_VERSION))
1006 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_PACKFILE,
1007 3efd8e31 2022-10-23 thomas "bad packfile version");
1009 d98779cd 2023-01-19 thomas *nobj = be32toh(hdr.nobjects);
1010 d98779cd 2023-01-19 thomas if (*nobj == 0) {
1012 d98779cd 2023-01-19 thomas * Clients which are creating new references only
1013 d98779cd 2023-01-19 thomas * will send us an empty pack file.
1015 d98779cd 2023-01-19 thomas if (client->nref_updates > 0 &&
1016 d98779cd 2023-01-19 thomas client->nref_updates == client->nref_new)
1017 d98779cd 2023-01-19 thomas return NULL;
1019 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_PACKFILE,
1020 3efd8e31 2022-10-23 thomas "bad packfile with zero objects");
1023 d98779cd 2023-01-19 thomas log_debug("expecting %d objects", *nobj);
1025 3efd8e31 2022-10-23 thomas err = got_pack_hwrite(outfd, &hdr, sizeof(hdr), &ctx);
1026 3efd8e31 2022-10-23 thomas if (err)
1027 3efd8e31 2022-10-23 thomas return err;
1029 3efd8e31 2022-10-23 thomas err = buf_alloc(&buf, 65536);
1030 3efd8e31 2022-10-23 thomas if (err)
1031 3efd8e31 2022-10-23 thomas return err;
1033 d98779cd 2023-01-19 thomas while (nhave != *nobj) {
1034 3efd8e31 2022-10-23 thomas uint8_t obj_type;
1035 3efd8e31 2022-10-23 thomas uint64_t obj_size;
1037 3efd8e31 2022-10-23 thomas err = copy_object_type_and_size(&obj_type, &obj_size,
1038 3efd8e31 2022-10-23 thomas infd, outfd, outsize, buf, &buf_pos, &ctx);
1039 3efd8e31 2022-10-23 thomas if (err)
1040 3efd8e31 2022-10-23 thomas goto done;
1042 3efd8e31 2022-10-23 thomas err = validate_object_type(obj_type);
1043 3efd8e31 2022-10-23 thomas if (err)
1044 3efd8e31 2022-10-23 thomas goto done;
1046 3efd8e31 2022-10-23 thomas if (obj_type == GOT_OBJ_TYPE_REF_DELTA) {
1047 3efd8e31 2022-10-23 thomas err = copy_ref_delta(infd, outfd, outsize,
1048 3efd8e31 2022-10-23 thomas buf, &buf_pos, &ctx);
1049 3efd8e31 2022-10-23 thomas if (err)
1050 3efd8e31 2022-10-23 thomas goto done;
1051 3efd8e31 2022-10-23 thomas } else if (obj_type == GOT_OBJ_TYPE_OFFSET_DELTA) {
1052 3efd8e31 2022-10-23 thomas err = copy_offset_delta(infd, outfd, outsize,
1053 3efd8e31 2022-10-23 thomas buf, &buf_pos, &ctx);
1054 3efd8e31 2022-10-23 thomas if (err)
1055 3efd8e31 2022-10-23 thomas goto done;
1058 3efd8e31 2022-10-23 thomas err = copy_zstream(infd, outfd, outsize, buf, &buf_pos, &ctx);
1059 3efd8e31 2022-10-23 thomas if (err)
1060 3efd8e31 2022-10-23 thomas goto done;
1062 3efd8e31 2022-10-23 thomas nhave++;
1065 d98779cd 2023-01-19 thomas log_debug("received %u objects", *nobj);
1067 b16893ba 2023-02-24 thomas got_hash_final(&ctx, expected_sha1);
1069 3efd8e31 2022-10-23 thomas remain = buf_len(buf) - buf_pos;
1070 3efd8e31 2022-10-23 thomas if (remain < SHA1_DIGEST_LENGTH) {
1071 3efd8e31 2022-10-23 thomas err = read_more_pack_stream(infd, buf,
1072 3efd8e31 2022-10-23 thomas SHA1_DIGEST_LENGTH - remain);
1073 3efd8e31 2022-10-23 thomas if (err)
1074 3efd8e31 2022-10-23 thomas return err;
1077 3efd8e31 2022-10-23 thomas got_sha1_digest_to_str(expected_sha1, hex, sizeof(hex));
1078 3efd8e31 2022-10-23 thomas log_debug("expect SHA1: %s", hex);
1079 3efd8e31 2022-10-23 thomas got_sha1_digest_to_str(buf_get(buf) + buf_pos, hex, sizeof(hex));
1080 3efd8e31 2022-10-23 thomas log_debug("actual SHA1: %s", hex);
1082 3efd8e31 2022-10-23 thomas if (memcmp(buf_get(buf) + buf_pos, expected_sha1,
1083 3efd8e31 2022-10-23 thomas SHA1_DIGEST_LENGTH) != 0) {
1084 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PACKFILE_CSUM);
1085 3efd8e31 2022-10-23 thomas goto done;
1088 3efd8e31 2022-10-23 thomas memcpy(sha1, expected_sha1, SHA1_DIGEST_LENGTH);
1090 3efd8e31 2022-10-23 thomas w = write(outfd, expected_sha1, SHA1_DIGEST_LENGTH);
1091 3efd8e31 2022-10-23 thomas if (w == -1) {
1092 3efd8e31 2022-10-23 thomas err = got_error_from_errno("write");
1093 3efd8e31 2022-10-23 thomas goto done;
1095 3efd8e31 2022-10-23 thomas if (w != SHA1_DIGEST_LENGTH) {
1096 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_IO);
1097 3efd8e31 2022-10-23 thomas goto done;
1100 3efd8e31 2022-10-23 thomas *outsize += SHA1_DIGEST_LENGTH;
1102 3efd8e31 2022-10-23 thomas if (fsync(outfd) == -1) {
1103 3efd8e31 2022-10-23 thomas err = got_error_from_errno("fsync");
1104 3efd8e31 2022-10-23 thomas goto done;
1106 3efd8e31 2022-10-23 thomas if (lseek(outfd, 0L, SEEK_SET) == -1) {
1107 3efd8e31 2022-10-23 thomas err = got_error_from_errno("lseek");
1108 3efd8e31 2022-10-23 thomas goto done;
1111 3efd8e31 2022-10-23 thomas buf_free(buf);
1112 3efd8e31 2022-10-23 thomas return err;
1115 3efd8e31 2022-10-23 thomas static const struct got_error *
1116 9148c8a7 2023-01-02 thomas report_pack_status(const struct got_error *unpack_err)
1118 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1119 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1120 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_status istatus;
1121 3efd8e31 2022-10-23 thomas struct ibuf *wbuf;
1122 3efd8e31 2022-10-23 thomas struct imsgbuf ibuf;
1123 3efd8e31 2022-10-23 thomas const char *unpack_ok = "unpack ok\n";
1124 3efd8e31 2022-10-23 thomas size_t len;
1126 3efd8e31 2022-10-23 thomas imsg_init(&ibuf, client->fd);
1128 3efd8e31 2022-10-23 thomas if (unpack_err)
1129 3efd8e31 2022-10-23 thomas istatus.reason_len = strlen(unpack_err->msg);
1131 3efd8e31 2022-10-23 thomas istatus.reason_len = strlen(unpack_ok);
1133 3efd8e31 2022-10-23 thomas len = sizeof(istatus) + istatus.reason_len;
1134 3efd8e31 2022-10-23 thomas wbuf = imsg_create(&ibuf, GOTD_IMSG_PACKFILE_STATUS, PROC_REPO_WRITE,
1135 3efd8e31 2022-10-23 thomas repo_write.pid, len);
1136 3efd8e31 2022-10-23 thomas if (wbuf == NULL) {
1137 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_create PACKFILE_STATUS");
1138 3efd8e31 2022-10-23 thomas goto done;
1141 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, &istatus, sizeof(istatus)) == -1) {
1142 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_add PACKFILE_STATUS");
1143 3efd8e31 2022-10-23 thomas goto done;
1146 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, err ? err->msg : unpack_ok,
1147 3efd8e31 2022-10-23 thomas istatus.reason_len) == -1) {
1148 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_add PACKFILE_STATUS");
1149 3efd8e31 2022-10-23 thomas goto done;
1152 3efd8e31 2022-10-23 thomas wbuf->fd = -1;
1153 3efd8e31 2022-10-23 thomas imsg_close(&ibuf, wbuf);
1155 3efd8e31 2022-10-23 thomas err = gotd_imsg_flush(&ibuf);
1157 3efd8e31 2022-10-23 thomas imsg_clear(&ibuf);
1158 3efd8e31 2022-10-23 thomas return err;
1161 3efd8e31 2022-10-23 thomas static const struct got_error *
1162 d98779cd 2023-01-19 thomas recv_packfile(int *have_packfile, struct imsg *imsg)
1164 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL, *unpack_err;
1165 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1166 3efd8e31 2022-10-23 thomas struct gotd_imsg_recv_packfile ireq;
1167 3efd8e31 2022-10-23 thomas FILE *tempfiles[3] = { NULL, NULL, NULL };
1168 3efd8e31 2022-10-23 thomas struct repo_tempfile {
1170 3efd8e31 2022-10-23 thomas int idx;
1171 3efd8e31 2022-10-23 thomas } repo_tempfiles[3] = { { - 1, - 1 }, { - 1, - 1 }, { - 1, - 1 }, };
1173 3efd8e31 2022-10-23 thomas size_t datalen;
1174 3efd8e31 2022-10-23 thomas struct imsgbuf ibuf;
1175 3efd8e31 2022-10-23 thomas struct got_ratelimit rl;
1176 3efd8e31 2022-10-23 thomas struct got_pack *pack = NULL;
1177 3efd8e31 2022-10-23 thomas off_t pack_filesize = 0;
1178 d98779cd 2023-01-19 thomas uint32_t nobj = 0;
1180 3efd8e31 2022-10-23 thomas log_debug("packfile request received");
1182 d98779cd 2023-01-19 thomas *have_packfile = 0;
1183 3efd8e31 2022-10-23 thomas got_ratelimit_init(&rl, 2, 0);
1185 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1186 3efd8e31 2022-10-23 thomas if (datalen != sizeof(ireq))
1187 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1188 3efd8e31 2022-10-23 thomas memcpy(&ireq, imsg->data, sizeof(ireq));
1190 9148c8a7 2023-01-02 thomas if (client->pack_pipe == -1 || client->packidx_fd == -1)
1191 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
1193 9148c8a7 2023-01-02 thomas imsg_init(&ibuf, client->fd);
1195 3efd8e31 2022-10-23 thomas if (imsg->fd == -1)
1196 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
1198 9148c8a7 2023-01-02 thomas pack = &client->pack;
1199 3efd8e31 2022-10-23 thomas memset(pack, 0, sizeof(*pack));
1200 3efd8e31 2022-10-23 thomas pack->fd = imsg->fd;
1201 3efd8e31 2022-10-23 thomas err = got_delta_cache_alloc(&pack->delta_cache);
1202 3efd8e31 2022-10-23 thomas if (err)
1203 3efd8e31 2022-10-23 thomas return err;
1205 3efd8e31 2022-10-23 thomas for (i = 0; i < nitems(repo_tempfiles); i++) {
1206 3efd8e31 2022-10-23 thomas struct repo_tempfile *t = &repo_tempfiles[i];
1207 3efd8e31 2022-10-23 thomas err = got_repo_temp_fds_get(&t->fd, &t->idx, repo_write.repo);
1208 3efd8e31 2022-10-23 thomas if (err)
1209 3efd8e31 2022-10-23 thomas goto done;
1212 3efd8e31 2022-10-23 thomas for (i = 0; i < nitems(tempfiles); i++) {
1214 3efd8e31 2022-10-23 thomas FILE *f;
1216 da2c57e4 2023-02-03 thomas fd = dup(repo_tempfiles[i].fd);
1217 3efd8e31 2022-10-23 thomas if (fd == -1) {
1218 3efd8e31 2022-10-23 thomas err = got_error_from_errno("dup");
1219 3efd8e31 2022-10-23 thomas goto done;
1221 3efd8e31 2022-10-23 thomas f = fdopen(fd, "w+");
1222 3efd8e31 2022-10-23 thomas if (f == NULL) {
1223 da2c57e4 2023-02-03 thomas err = got_error_from_errno("fdopen");
1224 3efd8e31 2022-10-23 thomas close(fd);
1225 3efd8e31 2022-10-23 thomas goto done;
1227 3efd8e31 2022-10-23 thomas tempfiles[i] = f;
1230 3efd8e31 2022-10-23 thomas /* Send pack file pipe to gotsh(1). */
1231 3efd8e31 2022-10-23 thomas if (imsg_compose(&ibuf, GOTD_IMSG_RECV_PACKFILE, PROC_REPO_WRITE,
1232 3efd8e31 2022-10-23 thomas repo_write.pid, (*client)->pack_pipe[1], NULL, 0) == -1) {
1233 3efd8e31 2022-10-23 thomas (*client)->pack_pipe[1] = -1;
1234 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_compose ACK");
1235 3efd8e31 2022-10-23 thomas if (err)
1236 3efd8e31 2022-10-23 thomas goto done;
1238 3efd8e31 2022-10-23 thomas (*client)->pack_pipe[1] = -1;
1239 3efd8e31 2022-10-23 thomas err = gotd_imsg_flush(&ibuf);
1240 3efd8e31 2022-10-23 thomas if (err)
1241 3efd8e31 2022-10-23 thomas goto done;
1243 3efd8e31 2022-10-23 thomas log_debug("receiving pack data");
1244 d98779cd 2023-01-19 thomas unpack_err = recv_packdata(&pack_filesize, &nobj,
1245 d98779cd 2023-01-19 thomas client->pack_sha1, client->pack_pipe, pack->fd);
1246 3efd8e31 2022-10-23 thomas if (ireq.report_status) {
1247 9148c8a7 2023-01-02 thomas err = report_pack_status(unpack_err);
1248 3efd8e31 2022-10-23 thomas if (err) {
1249 3efd8e31 2022-10-23 thomas /* Git clients hang up after sending the pack file. */
1250 3efd8e31 2022-10-23 thomas if (err->code == GOT_ERR_EOF)
1251 3efd8e31 2022-10-23 thomas err = NULL;
1254 3efd8e31 2022-10-23 thomas if (unpack_err)
1255 3efd8e31 2022-10-23 thomas err = unpack_err;
1256 3efd8e31 2022-10-23 thomas if (err)
1257 3efd8e31 2022-10-23 thomas goto done;
1259 3efd8e31 2022-10-23 thomas log_debug("pack data received");
1262 d98779cd 2023-01-19 thomas * Clients which are creating new references only will
1263 d98779cd 2023-01-19 thomas * send us an empty pack file.
1265 d98779cd 2023-01-19 thomas if (nobj == 0 &&
1266 d98779cd 2023-01-19 thomas pack_filesize == sizeof(struct got_packfile_hdr) &&
1267 d98779cd 2023-01-19 thomas client->nref_updates > 0 &&
1268 d98779cd 2023-01-19 thomas client->nref_updates == client->nref_new)
1269 d98779cd 2023-01-19 thomas goto done;
1272 49563dfb 2023-01-28 thomas * Clients which are deleting references only will send
1273 49563dfb 2023-01-28 thomas * no pack file.
1275 49563dfb 2023-01-28 thomas if (nobj == 0 &&
1276 49563dfb 2023-01-28 thomas client->nref_del > 0 &&
1277 49563dfb 2023-01-28 thomas client->nref_updates == client->nref_del)
1278 49563dfb 2023-01-28 thomas goto done;
1280 3efd8e31 2022-10-23 thomas pack->filesize = pack_filesize;
1281 d98779cd 2023-01-19 thomas *have_packfile = 1;
1283 66e6097f 2022-10-27 thomas log_debug("begin indexing pack (%lld bytes in size)",
1284 66e6097f 2022-10-27 thomas (long long)pack->filesize);
1285 9148c8a7 2023-01-02 thomas err = got_pack_index(pack, client->packidx_fd,
1286 9148c8a7 2023-01-02 thomas tempfiles[0], tempfiles[1], tempfiles[2], client->pack_sha1,
1287 3efd8e31 2022-10-23 thomas pack_index_progress, NULL, &rl);
1288 3efd8e31 2022-10-23 thomas if (err)
1289 3efd8e31 2022-10-23 thomas goto done;
1290 3efd8e31 2022-10-23 thomas log_debug("done indexing pack");
1292 9148c8a7 2023-01-02 thomas if (fsync(client->packidx_fd) == -1) {
1293 3efd8e31 2022-10-23 thomas err = got_error_from_errno("fsync");
1294 3efd8e31 2022-10-23 thomas goto done;
1296 9148c8a7 2023-01-02 thomas if (lseek(client->packidx_fd, 0L, SEEK_SET) == -1)
1297 3efd8e31 2022-10-23 thomas err = got_error_from_errno("lseek");
1299 9148c8a7 2023-01-02 thomas if (close(client->pack_pipe) == -1 && err == NULL)
1300 3efd8e31 2022-10-23 thomas err = got_error_from_errno("close");
1301 9148c8a7 2023-01-02 thomas client->pack_pipe = -1;
1302 3efd8e31 2022-10-23 thomas for (i = 0; i < nitems(repo_tempfiles); i++) {
1303 3efd8e31 2022-10-23 thomas struct repo_tempfile *t = &repo_tempfiles[i];
1304 3efd8e31 2022-10-23 thomas if (t->idx != -1)
1305 3efd8e31 2022-10-23 thomas got_repo_temp_fds_put(t->idx, repo_write.repo);
1307 3efd8e31 2022-10-23 thomas for (i = 0; i < nitems(tempfiles); i++) {
1308 3efd8e31 2022-10-23 thomas if (tempfiles[i] && fclose(tempfiles[i]) == EOF && err == NULL)
1309 3efd8e31 2022-10-23 thomas err = got_error_from_errno("fclose");
1311 3efd8e31 2022-10-23 thomas if (err)
1312 3efd8e31 2022-10-23 thomas got_pack_close(pack);
1313 3efd8e31 2022-10-23 thomas imsg_clear(&ibuf);
1314 3efd8e31 2022-10-23 thomas return err;
1317 3efd8e31 2022-10-23 thomas static const struct got_error *
1318 9148c8a7 2023-01-02 thomas verify_packfile(void)
1320 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL, *close_err;
1321 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1322 3efd8e31 2022-10-23 thomas struct gotd_ref_update *ref_update;
1323 3efd8e31 2022-10-23 thomas struct got_packidx *packidx = NULL;
1324 3efd8e31 2022-10-23 thomas struct stat sb;
1325 3efd8e31 2022-10-23 thomas char *id_str = NULL;
1326 6d7eb4f7 2023-04-04 thomas struct got_object *obj = NULL;
1327 6d7eb4f7 2023-04-04 thomas struct got_pathlist_entry *pe;
1328 6d7eb4f7 2023-04-04 thomas char hex[SHA1_DIGEST_STRING_LENGTH];
1330 3efd8e31 2022-10-23 thomas if (STAILQ_EMPTY(&client->ref_updates)) {
1331 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_REQUEST,
1332 3efd8e31 2022-10-23 thomas "cannot verify pack file without any ref-updates");
1335 3efd8e31 2022-10-23 thomas if (client->pack.fd == -1) {
1336 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_REQUEST,
1337 3efd8e31 2022-10-23 thomas "invalid pack file handle during pack verification");
1339 3efd8e31 2022-10-23 thomas if (client->packidx_fd == -1) {
1340 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_REQUEST,
1341 3efd8e31 2022-10-23 thomas "invalid pack index handle during pack verification");
1344 3efd8e31 2022-10-23 thomas if (fstat(client->packidx_fd, &sb) == -1)
1345 3efd8e31 2022-10-23 thomas return got_error_from_errno("pack index fstat");
1347 3efd8e31 2022-10-23 thomas packidx = malloc(sizeof(*packidx));
1348 3efd8e31 2022-10-23 thomas memset(packidx, 0, sizeof(*packidx));
1349 3efd8e31 2022-10-23 thomas packidx->fd = client->packidx_fd;
1350 3efd8e31 2022-10-23 thomas client->packidx_fd = -1;
1351 3efd8e31 2022-10-23 thomas packidx->len = sb.st_size;
1353 3efd8e31 2022-10-23 thomas err = got_packidx_init_hdr(packidx, 1, client->pack.filesize);
1354 3efd8e31 2022-10-23 thomas if (err)
1355 3efd8e31 2022-10-23 thomas return err;
1357 3efd8e31 2022-10-23 thomas STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1358 49563dfb 2023-01-28 thomas if (ref_update->delete_ref)
1359 49563dfb 2023-01-28 thomas continue;
1361 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_tag_namespaces, entry) {
1362 6d7eb4f7 2023-04-04 thomas err = protect_tag_namespace(pe->path, &client->pack,
1363 6d7eb4f7 2023-04-04 thomas packidx, ref_update);
1364 6d7eb4f7 2023-04-04 thomas if (err)
1365 6d7eb4f7 2023-04-04 thomas goto done;
1369 6d7eb4f7 2023-04-04 thomas * Objects which already exist in our repository need
1370 6d7eb4f7 2023-04-04 thomas * not be present in the pack file.
1372 6d7eb4f7 2023-04-04 thomas err = got_object_open(&obj, repo_write.repo,
1373 6d7eb4f7 2023-04-04 thomas &ref_update->new_id);
1374 6d7eb4f7 2023-04-04 thomas if (err && err->code != GOT_ERR_NO_OBJ)
1375 3efd8e31 2022-10-23 thomas goto done;
1376 6d7eb4f7 2023-04-04 thomas err = NULL;
1377 6d7eb4f7 2023-04-04 thomas if (obj) {
1378 6d7eb4f7 2023-04-04 thomas got_object_close(obj);
1379 6d7eb4f7 2023-04-04 thomas obj = NULL;
1380 6d7eb4f7 2023-04-04 thomas } else {
1381 6d7eb4f7 2023-04-04 thomas int idx = got_packidx_get_object_idx(packidx,
1382 6d7eb4f7 2023-04-04 thomas &ref_update->new_id);
1383 6d7eb4f7 2023-04-04 thomas if (idx == -1) {
1384 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(ref_update->new_id.sha1,
1385 6d7eb4f7 2023-04-04 thomas hex, sizeof(hex));
1386 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_BAD_PACKFILE,
1387 6d7eb4f7 2023-04-04 thomas "object %s is missing from pack file",
1389 6d7eb4f7 2023-04-04 thomas goto done;
1393 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_branch_namespaces,
1394 6d7eb4f7 2023-04-04 thomas entry) {
1395 6d7eb4f7 2023-04-04 thomas err = protect_branch_namespace(pe->path,
1396 6d7eb4f7 2023-04-04 thomas &client->pack, packidx, ref_update);
1397 6d7eb4f7 2023-04-04 thomas if (err)
1398 6d7eb4f7 2023-04-04 thomas goto done;
1400 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_branches, entry) {
1401 6d7eb4f7 2023-04-04 thomas err = protect_branch(pe->path, &client->pack,
1402 6d7eb4f7 2023-04-04 thomas packidx, ref_update);
1403 6d7eb4f7 2023-04-04 thomas if (err)
1404 6d7eb4f7 2023-04-04 thomas goto done;
1409 3efd8e31 2022-10-23 thomas close_err = got_packidx_close(packidx);
1410 3efd8e31 2022-10-23 thomas if (close_err && err == NULL)
1411 3efd8e31 2022-10-23 thomas err = close_err;
1412 3efd8e31 2022-10-23 thomas free(id_str);
1413 6d7eb4f7 2023-04-04 thomas if (obj)
1414 6d7eb4f7 2023-04-04 thomas got_object_close(obj);
1415 3efd8e31 2022-10-23 thomas return err;
1418 3efd8e31 2022-10-23 thomas static const struct got_error *
1419 6d7eb4f7 2023-04-04 thomas protect_refs_from_deletion(void)
1421 6d7eb4f7 2023-04-04 thomas const struct got_error *err = NULL;
1422 6d7eb4f7 2023-04-04 thomas struct repo_write_client *client = &repo_write_client;
1423 6d7eb4f7 2023-04-04 thomas struct gotd_ref_update *ref_update;
1424 6d7eb4f7 2023-04-04 thomas struct got_pathlist_entry *pe;
1425 6d7eb4f7 2023-04-04 thomas const char *refname;
1427 6d7eb4f7 2023-04-04 thomas STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1428 6d7eb4f7 2023-04-04 thomas if (!ref_update->delete_ref)
1429 6d7eb4f7 2023-04-04 thomas continue;
1431 6d7eb4f7 2023-04-04 thomas refname = got_ref_get_name(ref_update->ref);
1433 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_tag_namespaces, entry) {
1434 6d7eb4f7 2023-04-04 thomas err = protect_ref_namespace(refname, pe->path);
1435 6d7eb4f7 2023-04-04 thomas if (err)
1436 6d7eb4f7 2023-04-04 thomas return err;
1439 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_branch_namespaces,
1440 6d7eb4f7 2023-04-04 thomas entry) {
1441 6d7eb4f7 2023-04-04 thomas err = protect_ref_namespace(refname, pe->path);
1442 6d7eb4f7 2023-04-04 thomas if (err)
1443 6d7eb4f7 2023-04-04 thomas return err;
1446 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_branches, entry) {
1447 6d7eb4f7 2023-04-04 thomas if (strcmp(refname, pe->path) == 0) {
1448 6d7eb4f7 2023-04-04 thomas return got_error_fmt(GOT_ERR_REF_PROTECTED,
1449 6d7eb4f7 2023-04-04 thomas "%s", refname);
1454 6d7eb4f7 2023-04-04 thomas return NULL;
1457 6d7eb4f7 2023-04-04 thomas static const struct got_error *
1458 9148c8a7 2023-01-02 thomas install_packfile(struct gotd_imsgev *iev)
1460 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1461 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_install inst;
1462 3efd8e31 2022-10-23 thomas int ret;
1464 3efd8e31 2022-10-23 thomas memset(&inst, 0, sizeof(inst));
1465 3efd8e31 2022-10-23 thomas inst.client_id = client->id;
1466 3efd8e31 2022-10-23 thomas memcpy(inst.pack_sha1, client->pack_sha1, SHA1_DIGEST_LENGTH);
1468 3efd8e31 2022-10-23 thomas ret = gotd_imsg_compose_event(iev, GOTD_IMSG_PACKFILE_INSTALL,
1469 3efd8e31 2022-10-23 thomas PROC_REPO_WRITE, -1, &inst, sizeof(inst));
1470 3efd8e31 2022-10-23 thomas if (ret == -1)
1471 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_compose PACKFILE_INSTALL");
1473 3efd8e31 2022-10-23 thomas return NULL;
1476 3efd8e31 2022-10-23 thomas static const struct got_error *
1477 9148c8a7 2023-01-02 thomas send_ref_updates_start(int nref_updates, struct gotd_imsgev *iev)
1479 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1480 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_updates_start istart;
1481 3efd8e31 2022-10-23 thomas int ret;
1483 3efd8e31 2022-10-23 thomas memset(&istart, 0, sizeof(istart));
1484 3efd8e31 2022-10-23 thomas istart.nref_updates = nref_updates;
1485 3efd8e31 2022-10-23 thomas istart.client_id = client->id;
1487 3efd8e31 2022-10-23 thomas ret = gotd_imsg_compose_event(iev, GOTD_IMSG_REF_UPDATES_START,
1488 3efd8e31 2022-10-23 thomas PROC_REPO_WRITE, -1, &istart, sizeof(istart));
1489 3efd8e31 2022-10-23 thomas if (ret == -1)
1490 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_compose REF_UPDATES_START");
1492 3efd8e31 2022-10-23 thomas return NULL;
1496 3efd8e31 2022-10-23 thomas static const struct got_error *
1497 9148c8a7 2023-01-02 thomas send_ref_update(struct gotd_ref_update *ref_update, struct gotd_imsgev *iev)
1499 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1500 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_update iref;
1501 3efd8e31 2022-10-23 thomas const char *refname = got_ref_get_name(ref_update->ref);
1502 3efd8e31 2022-10-23 thomas struct ibuf *wbuf;
1503 3efd8e31 2022-10-23 thomas size_t len;
1505 3efd8e31 2022-10-23 thomas memset(&iref, 0, sizeof(iref));
1506 3efd8e31 2022-10-23 thomas memcpy(iref.old_id, ref_update->old_id.sha1, SHA1_DIGEST_LENGTH);
1507 3efd8e31 2022-10-23 thomas memcpy(iref.new_id, ref_update->new_id.sha1, SHA1_DIGEST_LENGTH);
1508 3efd8e31 2022-10-23 thomas iref.ref_is_new = ref_update->ref_is_new;
1509 49563dfb 2023-01-28 thomas iref.delete_ref = ref_update->delete_ref;
1510 3efd8e31 2022-10-23 thomas iref.client_id = client->id;
1511 3efd8e31 2022-10-23 thomas iref.name_len = strlen(refname);
1513 3efd8e31 2022-10-23 thomas len = sizeof(iref) + iref.name_len;
1514 3efd8e31 2022-10-23 thomas wbuf = imsg_create(&iev->ibuf, GOTD_IMSG_REF_UPDATE, PROC_REPO_WRITE,
1515 3efd8e31 2022-10-23 thomas repo_write.pid, len);
1516 3efd8e31 2022-10-23 thomas if (wbuf == NULL)
1517 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_create REF_UPDATE");
1519 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, &iref, sizeof(iref)) == -1)
1520 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add REF_UPDATE");
1521 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, refname, iref.name_len) == -1)
1522 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add REF_UPDATE");
1524 3efd8e31 2022-10-23 thomas wbuf->fd = -1;
1525 3efd8e31 2022-10-23 thomas imsg_close(&iev->ibuf, wbuf);
1527 3efd8e31 2022-10-23 thomas gotd_imsg_event_add(iev);
1528 3efd8e31 2022-10-23 thomas return NULL;
1531 3efd8e31 2022-10-23 thomas static const struct got_error *
1532 9148c8a7 2023-01-02 thomas update_refs(struct gotd_imsgev *iev)
1534 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1535 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1536 3efd8e31 2022-10-23 thomas struct gotd_ref_update *ref_update;
1538 9148c8a7 2023-01-02 thomas err = send_ref_updates_start(client->nref_updates, iev);
1539 3efd8e31 2022-10-23 thomas if (err)
1540 3efd8e31 2022-10-23 thomas return err;
1542 3efd8e31 2022-10-23 thomas STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1543 9148c8a7 2023-01-02 thomas err = send_ref_update(ref_update, iev);
1544 3efd8e31 2022-10-23 thomas if (err)
1545 3efd8e31 2022-10-23 thomas goto done;
1548 3efd8e31 2022-10-23 thomas return err;
1551 3efd8e31 2022-10-23 thomas static const struct got_error *
1552 9148c8a7 2023-01-02 thomas receive_pack_pipe(struct imsg *imsg, struct gotd_imsgev *iev)
1554 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1555 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_pipe ireq;
1556 3efd8e31 2022-10-23 thomas size_t datalen;
1558 3efd8e31 2022-10-23 thomas log_debug("receving pack pipe descriptor");
1560 3efd8e31 2022-10-23 thomas if (imsg->fd == -1)
1561 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
1563 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1564 3efd8e31 2022-10-23 thomas if (datalen != sizeof(ireq))
1565 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1566 3efd8e31 2022-10-23 thomas memcpy(&ireq, imsg->data, sizeof(ireq));
1568 9148c8a7 2023-01-02 thomas if (client->pack_pipe != -1)
1569 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_MSG);
1571 9148c8a7 2023-01-02 thomas client->pack_pipe = imsg->fd;
1572 3efd8e31 2022-10-23 thomas return NULL;
1575 3efd8e31 2022-10-23 thomas static const struct got_error *
1576 9148c8a7 2023-01-02 thomas receive_pack_idx(struct imsg *imsg, struct gotd_imsgev *iev)
1578 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1579 3efd8e31 2022-10-23 thomas struct gotd_imsg_packidx_file ireq;
1580 3efd8e31 2022-10-23 thomas size_t datalen;
1582 3efd8e31 2022-10-23 thomas log_debug("receving pack index output file");
1584 3efd8e31 2022-10-23 thomas if (imsg->fd == -1)
1585 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
1587 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1588 3efd8e31 2022-10-23 thomas if (datalen != sizeof(ireq))
1589 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1590 3efd8e31 2022-10-23 thomas memcpy(&ireq, imsg->data, sizeof(ireq));
1592 9148c8a7 2023-01-02 thomas if (client->packidx_fd != -1)
1593 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_MSG);
1595 9148c8a7 2023-01-02 thomas client->packidx_fd = imsg->fd;
1596 3efd8e31 2022-10-23 thomas return NULL;
1599 3efd8e31 2022-10-23 thomas static void
1600 62ee7d94 2023-01-10 thomas repo_write_dispatch_session(int fd, short event, void *arg)
1602 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1603 3efd8e31 2022-10-23 thomas struct gotd_imsgev *iev = arg;
1604 3efd8e31 2022-10-23 thomas struct imsgbuf *ibuf = &iev->ibuf;
1605 3efd8e31 2022-10-23 thomas struct imsg imsg;
1606 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1607 3efd8e31 2022-10-23 thomas ssize_t n;
1608 d98779cd 2023-01-19 thomas int shut = 0, have_packfile = 0;
1610 3efd8e31 2022-10-23 thomas if (event & EV_READ) {
1611 3efd8e31 2022-10-23 thomas if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1612 3efd8e31 2022-10-23 thomas fatal("imsg_read error");
1613 3efd8e31 2022-10-23 thomas if (n == 0) /* Connection closed. */
1614 3efd8e31 2022-10-23 thomas shut = 1;
1617 3efd8e31 2022-10-23 thomas if (event & EV_WRITE) {
1618 3efd8e31 2022-10-23 thomas n = msgbuf_write(&ibuf->w);
1619 3efd8e31 2022-10-23 thomas if (n == -1 && errno != EAGAIN)
1620 3efd8e31 2022-10-23 thomas fatal("msgbuf_write");
1621 3efd8e31 2022-10-23 thomas if (n == 0) /* Connection closed. */
1622 3efd8e31 2022-10-23 thomas shut = 1;
1625 3efd8e31 2022-10-23 thomas for (;;) {
1626 3efd8e31 2022-10-23 thomas if ((n = imsg_get(ibuf, &imsg)) == -1)
1627 3efd8e31 2022-10-23 thomas fatal("%s: imsg_get error", __func__);
1628 3efd8e31 2022-10-23 thomas if (n == 0) /* No more messages. */
1631 9148c8a7 2023-01-02 thomas if (imsg.hdr.type != GOTD_IMSG_LIST_REFS_INTERNAL &&
1632 9148c8a7 2023-01-02 thomas client->id == 0) {
1633 9148c8a7 2023-01-02 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
1637 3efd8e31 2022-10-23 thomas switch (imsg.hdr.type) {
1638 3efd8e31 2022-10-23 thomas case GOTD_IMSG_LIST_REFS_INTERNAL:
1639 9148c8a7 2023-01-02 thomas err = list_refs(&imsg);
1640 3efd8e31 2022-10-23 thomas if (err)
1641 42f290d4 2023-03-05 thomas log_warnx("ls-refs: %s", err->msg);
1643 3efd8e31 2022-10-23 thomas case GOTD_IMSG_REF_UPDATE:
1644 9148c8a7 2023-01-02 thomas err = recv_ref_update(&imsg);
1645 3efd8e31 2022-10-23 thomas if (err)
1646 42f290d4 2023-03-05 thomas log_warnx("ref-update: %s", err->msg);
1648 3efd8e31 2022-10-23 thomas case GOTD_IMSG_PACKFILE_PIPE:
1649 9148c8a7 2023-01-02 thomas err = receive_pack_pipe(&imsg, iev);
1650 3efd8e31 2022-10-23 thomas if (err) {
1651 42f290d4 2023-03-05 thomas log_warnx("receiving pack pipe: %s", err->msg);
1655 3efd8e31 2022-10-23 thomas case GOTD_IMSG_PACKIDX_FILE:
1656 9148c8a7 2023-01-02 thomas err = receive_pack_idx(&imsg, iev);
1657 3efd8e31 2022-10-23 thomas if (err) {
1658 42f290d4 2023-03-05 thomas log_warnx("receiving pack index: %s",
1659 42f290d4 2023-03-05 thomas err->msg);
1663 3efd8e31 2022-10-23 thomas case GOTD_IMSG_RECV_PACKFILE:
1664 6d7eb4f7 2023-04-04 thomas err = protect_refs_from_deletion();
1665 6d7eb4f7 2023-04-04 thomas if (err)
1667 d98779cd 2023-01-19 thomas err = recv_packfile(&have_packfile, &imsg);
1668 3efd8e31 2022-10-23 thomas if (err) {
1669 42f290d4 2023-03-05 thomas log_warnx("receive packfile: %s", err->msg);
1672 d98779cd 2023-01-19 thomas if (have_packfile) {
1673 d98779cd 2023-01-19 thomas err = verify_packfile();
1674 d98779cd 2023-01-19 thomas if (err) {
1675 42f290d4 2023-03-05 thomas log_warnx("verify packfile: %s",
1676 42f290d4 2023-03-05 thomas err->msg);
1679 d98779cd 2023-01-19 thomas err = install_packfile(iev);
1680 d98779cd 2023-01-19 thomas if (err) {
1681 42f290d4 2023-03-05 thomas log_warnx("install packfile: %s",
1682 42f290d4 2023-03-05 thomas err->msg);
1686 9148c8a7 2023-01-02 thomas err = update_refs(iev);
1687 3efd8e31 2022-10-23 thomas if (err) {
1688 42f290d4 2023-03-05 thomas log_warnx("update refs: %s", err->msg);
1691 62ee7d94 2023-01-10 thomas default:
1692 42f290d4 2023-03-05 thomas log_debug("unexpected imsg %d", imsg.hdr.type);
1696 62ee7d94 2023-01-10 thomas imsg_free(&imsg);
1699 62ee7d94 2023-01-10 thomas if (!shut && check_cancelled(NULL) == NULL) {
1700 62ee7d94 2023-01-10 thomas if (err &&
1701 62ee7d94 2023-01-10 thomas gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
1702 62ee7d94 2023-01-10 thomas client->id, err) == -1) {
1703 62ee7d94 2023-01-10 thomas log_warnx("could not send error to parent: %s",
1704 62ee7d94 2023-01-10 thomas err->msg);
1706 62ee7d94 2023-01-10 thomas gotd_imsg_event_add(iev);
1707 62ee7d94 2023-01-10 thomas } else {
1708 62ee7d94 2023-01-10 thomas /* This pipe is dead. Remove its event handler */
1709 62ee7d94 2023-01-10 thomas event_del(&iev->ev);
1710 62ee7d94 2023-01-10 thomas event_loopexit(NULL);
1714 62ee7d94 2023-01-10 thomas static const struct got_error *
1715 62ee7d94 2023-01-10 thomas recv_connect(struct imsg *imsg)
1717 62ee7d94 2023-01-10 thomas struct gotd_imsgev *iev = &repo_write.session_iev;
1718 62ee7d94 2023-01-10 thomas size_t datalen;
1720 62ee7d94 2023-01-10 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1721 62ee7d94 2023-01-10 thomas if (datalen != 0)
1722 62ee7d94 2023-01-10 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1723 62ee7d94 2023-01-10 thomas if (imsg->fd == -1)
1724 62ee7d94 2023-01-10 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
1726 62ee7d94 2023-01-10 thomas if (repo_write.session_fd != -1)
1727 62ee7d94 2023-01-10 thomas return got_error(GOT_ERR_PRIVSEP_MSG);
1729 62ee7d94 2023-01-10 thomas repo_write.session_fd = imsg->fd;
1731 62ee7d94 2023-01-10 thomas imsg_init(&iev->ibuf, repo_write.session_fd);
1732 62ee7d94 2023-01-10 thomas iev->handler = repo_write_dispatch_session;
1733 62ee7d94 2023-01-10 thomas iev->events = EV_READ;
1734 62ee7d94 2023-01-10 thomas iev->handler_arg = NULL;
1735 62ee7d94 2023-01-10 thomas event_set(&iev->ev, iev->ibuf.fd, EV_READ,
1736 62ee7d94 2023-01-10 thomas repo_write_dispatch_session, iev);
1737 62ee7d94 2023-01-10 thomas gotd_imsg_event_add(iev);
1739 62ee7d94 2023-01-10 thomas return NULL;
1742 62ee7d94 2023-01-10 thomas static void
1743 62ee7d94 2023-01-10 thomas repo_write_dispatch(int fd, short event, void *arg)
1745 62ee7d94 2023-01-10 thomas const struct got_error *err = NULL;
1746 62ee7d94 2023-01-10 thomas struct gotd_imsgev *iev = arg;
1747 62ee7d94 2023-01-10 thomas struct imsgbuf *ibuf = &iev->ibuf;
1748 62ee7d94 2023-01-10 thomas struct imsg imsg;
1749 62ee7d94 2023-01-10 thomas ssize_t n;
1750 62ee7d94 2023-01-10 thomas int shut = 0;
1751 62ee7d94 2023-01-10 thomas struct repo_write_client *client = &repo_write_client;
1753 62ee7d94 2023-01-10 thomas if (event & EV_READ) {
1754 62ee7d94 2023-01-10 thomas if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1755 62ee7d94 2023-01-10 thomas fatal("imsg_read error");
1756 62ee7d94 2023-01-10 thomas if (n == 0) /* Connection closed. */
1757 9148c8a7 2023-01-02 thomas shut = 1;
1760 62ee7d94 2023-01-10 thomas if (event & EV_WRITE) {
1761 62ee7d94 2023-01-10 thomas n = msgbuf_write(&ibuf->w);
1762 62ee7d94 2023-01-10 thomas if (n == -1 && errno != EAGAIN)
1763 62ee7d94 2023-01-10 thomas fatal("msgbuf_write");
1764 62ee7d94 2023-01-10 thomas if (n == 0) /* Connection closed. */
1765 62ee7d94 2023-01-10 thomas shut = 1;
1768 62ee7d94 2023-01-10 thomas while (err == NULL && check_cancelled(NULL) == NULL) {
1769 62ee7d94 2023-01-10 thomas if ((n = imsg_get(ibuf, &imsg)) == -1)
1770 62ee7d94 2023-01-10 thomas fatal("%s: imsg_get", __func__);
1771 62ee7d94 2023-01-10 thomas if (n == 0) /* No more messages. */
1774 62ee7d94 2023-01-10 thomas switch (imsg.hdr.type) {
1775 62ee7d94 2023-01-10 thomas case GOTD_IMSG_CONNECT_REPO_CHILD:
1776 62ee7d94 2023-01-10 thomas err = recv_connect(&imsg);
1778 3efd8e31 2022-10-23 thomas default:
1779 42f290d4 2023-03-05 thomas log_debug("unexpected imsg %d", imsg.hdr.type);
1783 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
1786 3efd8e31 2022-10-23 thomas if (!shut && check_cancelled(NULL) == NULL) {
1787 3efd8e31 2022-10-23 thomas if (err &&
1788 3efd8e31 2022-10-23 thomas gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
1789 9148c8a7 2023-01-02 thomas client->id, err) == -1) {
1790 3efd8e31 2022-10-23 thomas log_warnx("could not send error to parent: %s",
1791 3efd8e31 2022-10-23 thomas err->msg);
1793 3efd8e31 2022-10-23 thomas gotd_imsg_event_add(iev);
1794 3efd8e31 2022-10-23 thomas } else {
1795 3efd8e31 2022-10-23 thomas /* This pipe is dead. Remove its event handler */
1796 3efd8e31 2022-10-23 thomas event_del(&iev->ev);
1797 3efd8e31 2022-10-23 thomas event_loopexit(NULL);
1802 414e37cb 2022-12-30 thomas repo_write_main(const char *title, const char *repo_path,
1803 6d7eb4f7 2023-04-04 thomas int *pack_fds, int *temp_fds,
1804 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_tag_namespaces,
1805 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_branch_namespaces,
1806 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_branches)
1808 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1809 92db09ff 2023-02-17 thomas struct repo_write_client *client = &repo_write_client;
1810 3efd8e31 2022-10-23 thomas struct gotd_imsgev iev;
1812 92db09ff 2023-02-17 thomas client->fd = -1;
1813 92db09ff 2023-02-17 thomas client->pack_pipe = -1;
1814 92db09ff 2023-02-17 thomas client->packidx_fd = -1;
1815 92db09ff 2023-02-17 thomas client->pack.fd = -1;
1817 3efd8e31 2022-10-23 thomas repo_write.title = title;
1818 3efd8e31 2022-10-23 thomas repo_write.pid = getpid();
1819 3efd8e31 2022-10-23 thomas repo_write.pack_fds = pack_fds;
1820 3efd8e31 2022-10-23 thomas repo_write.temp_fds = temp_fds;
1821 62ee7d94 2023-01-10 thomas repo_write.session_fd = -1;
1822 62ee7d94 2023-01-10 thomas repo_write.session_iev.ibuf.fd = -1;
1823 6d7eb4f7 2023-04-04 thomas repo_write.protected_tag_namespaces = protected_tag_namespaces;
1824 6d7eb4f7 2023-04-04 thomas repo_write.protected_branch_namespaces = protected_branch_namespaces;
1825 6d7eb4f7 2023-04-04 thomas repo_write.protected_branches = protected_branches;
1827 9148c8a7 2023-01-02 thomas STAILQ_INIT(&repo_write_client.ref_updates);
1829 414e37cb 2022-12-30 thomas err = got_repo_open(&repo_write.repo, repo_path, NULL, pack_fds);
1830 3efd8e31 2022-10-23 thomas if (err)
1831 3efd8e31 2022-10-23 thomas goto done;
1832 3efd8e31 2022-10-23 thomas if (!got_repo_is_bare(repo_write.repo)) {
1833 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_NOT_GIT_REPO,
1834 3efd8e31 2022-10-23 thomas "bare git repository required");
1835 3efd8e31 2022-10-23 thomas goto done;
1838 3efd8e31 2022-10-23 thomas got_repo_temp_fds_set(repo_write.repo, temp_fds);
1840 3efd8e31 2022-10-23 thomas signal(SIGINT, catch_sigint);
1841 3efd8e31 2022-10-23 thomas signal(SIGTERM, catch_sigterm);
1842 3efd8e31 2022-10-23 thomas signal(SIGPIPE, SIG_IGN);
1843 3efd8e31 2022-10-23 thomas signal(SIGHUP, SIG_IGN);
1845 bb3a6ce9 2022-11-17 thomas imsg_init(&iev.ibuf, GOTD_FILENO_MSG_PIPE);
1846 3efd8e31 2022-10-23 thomas iev.handler = repo_write_dispatch;
1847 3efd8e31 2022-10-23 thomas iev.events = EV_READ;
1848 3efd8e31 2022-10-23 thomas iev.handler_arg = NULL;
1849 3efd8e31 2022-10-23 thomas event_set(&iev.ev, iev.ibuf.fd, EV_READ, repo_write_dispatch, &iev);
1850 85b37c72 2022-12-30 thomas if (gotd_imsg_compose_event(&iev, GOTD_IMSG_REPO_CHILD_READY,
1851 85b37c72 2022-12-30 thomas PROC_REPO_WRITE, -1, NULL, 0) == -1) {
1852 85b37c72 2022-12-30 thomas err = got_error_from_errno("imsg compose REPO_CHILD_READY");
1853 3efd8e31 2022-10-23 thomas goto done;
1856 3efd8e31 2022-10-23 thomas event_dispatch();
1858 3efd8e31 2022-10-23 thomas if (err)
1859 3efd8e31 2022-10-23 thomas log_warnx("%s: %s", title, err->msg);
1860 3efd8e31 2022-10-23 thomas repo_write_shutdown();
1864 3efd8e31 2022-10-23 thomas repo_write_shutdown(void)
1866 92db09ff 2023-02-17 thomas struct repo_write_client *client = &repo_write_client;
1867 92db09ff 2023-02-17 thomas struct gotd_ref_update *ref_update;
1869 7161c4dc 2023-03-05 thomas log_debug("shutting down");
1871 92db09ff 2023-02-17 thomas while (!STAILQ_EMPTY(&client->ref_updates)) {
1872 92db09ff 2023-02-17 thomas ref_update = STAILQ_FIRST(&client->ref_updates);
1873 92db09ff 2023-02-17 thomas STAILQ_REMOVE_HEAD(&client->ref_updates, entry);
1874 92db09ff 2023-02-17 thomas got_ref_close(ref_update->ref);
1875 92db09ff 2023-02-17 thomas free(ref_update);
1878 92db09ff 2023-02-17 thomas got_pack_close(&client->pack);
1879 92db09ff 2023-02-17 thomas if (client->fd != -1)
1880 92db09ff 2023-02-17 thomas close(client->fd);
1881 92db09ff 2023-02-17 thomas if (client->pack_pipe != -1)
1882 92db09ff 2023-02-17 thomas close(client->pack_pipe);
1883 92db09ff 2023-02-17 thomas if (client->packidx_fd != -1)
1884 92db09ff 2023-02-17 thomas close(client->packidx_fd);
1886 3efd8e31 2022-10-23 thomas if (repo_write.repo)
1887 3efd8e31 2022-10-23 thomas got_repo_close(repo_write.repo);
1888 3efd8e31 2022-10-23 thomas got_repo_pack_fds_close(repo_write.pack_fds);
1889 80536967 2022-10-30 thomas got_repo_temp_fds_close(repo_write.temp_fds);
1890 62ee7d94 2023-01-10 thomas if (repo_write.session_fd != -1)
1891 62ee7d94 2023-01-10 thomas close(repo_write.session_fd);
1892 3efd8e31 2022-10-23 thomas exit(0);
