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 fde1a996 2023-08-23 thomas #include "got_compat.h"
19 3efd8e31 2022-10-23 thomas #include <sys/queue.h>
20 3efd8e31 2022-10-23 thomas #include <sys/stat.h>
21 3efd8e31 2022-10-23 thomas #include <sys/types.h>
23 3efd8e31 2022-10-23 thomas #include <event.h>
24 3efd8e31 2022-10-23 thomas #include <errno.h>
25 3efd8e31 2022-10-23 thomas #include <imsg.h>
26 3efd8e31 2022-10-23 thomas #include <signal.h>
27 3efd8e31 2022-10-23 thomas #include <stdio.h>
28 3efd8e31 2022-10-23 thomas #include <stdlib.h>
29 3efd8e31 2022-10-23 thomas #include <string.h>
30 3efd8e31 2022-10-23 thomas #include <limits.h>
31 3efd8e31 2022-10-23 thomas #include <poll.h>
32 3efd8e31 2022-10-23 thomas #include <unistd.h>
33 3efd8e31 2022-10-23 thomas #include <zlib.h>
35 3efd8e31 2022-10-23 thomas #include "buf.h"
37 3efd8e31 2022-10-23 thomas #include "got_error.h"
38 3efd8e31 2022-10-23 thomas #include "got_repository.h"
39 3efd8e31 2022-10-23 thomas #include "got_object.h"
40 3efd8e31 2022-10-23 thomas #include "got_reference.h"
41 3efd8e31 2022-10-23 thomas #include "got_path.h"
43 3efd8e31 2022-10-23 thomas #include "got_lib_delta.h"
44 3efd8e31 2022-10-23 thomas #include "got_lib_delta_cache.h"
45 b16893ba 2023-02-24 thomas #include "got_lib_hash.h"
46 3efd8e31 2022-10-23 thomas #include "got_lib_object.h"
47 3efd8e31 2022-10-23 thomas #include "got_lib_object_cache.h"
48 6d7eb4f7 2023-04-04 thomas #include "got_lib_object_idset.h"
49 6d7eb4f7 2023-04-04 thomas #include "got_lib_object_parse.h"
50 3efd8e31 2022-10-23 thomas #include "got_lib_ratelimit.h"
51 3efd8e31 2022-10-23 thomas #include "got_lib_pack.h"
52 3efd8e31 2022-10-23 thomas #include "got_lib_pack_index.h"
53 3efd8e31 2022-10-23 thomas #include "got_lib_repository.h"
54 3efd8e31 2022-10-23 thomas #include "got_lib_poll.h"
56 3efd8e31 2022-10-23 thomas #include "log.h"
57 3efd8e31 2022-10-23 thomas #include "gotd.h"
58 3efd8e31 2022-10-23 thomas #include "repo_write.h"
60 3efd8e31 2022-10-23 thomas #ifndef nitems
61 3efd8e31 2022-10-23 thomas #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
64 3efd8e31 2022-10-23 thomas static struct repo_write {
65 3efd8e31 2022-10-23 thomas pid_t pid;
66 3efd8e31 2022-10-23 thomas const char *title;
67 3efd8e31 2022-10-23 thomas struct got_repository *repo;
68 3efd8e31 2022-10-23 thomas int *pack_fds;
69 3efd8e31 2022-10-23 thomas int *temp_fds;
70 62ee7d94 2023-01-10 thomas int session_fd;
71 62ee7d94 2023-01-10 thomas struct gotd_imsgev session_iev;
72 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_tag_namespaces;
73 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_branch_namespaces;
74 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_branches;
75 3efd8e31 2022-10-23 thomas } repo_write;
77 3efd8e31 2022-10-23 thomas struct gotd_ref_update {
78 3efd8e31 2022-10-23 thomas STAILQ_ENTRY(gotd_ref_update) entry;
79 3efd8e31 2022-10-23 thomas struct got_reference *ref;
80 3efd8e31 2022-10-23 thomas int ref_is_new;
81 49563dfb 2023-01-28 thomas int delete_ref;
82 3efd8e31 2022-10-23 thomas struct got_object_id old_id;
83 3efd8e31 2022-10-23 thomas struct got_object_id new_id;
85 3efd8e31 2022-10-23 thomas STAILQ_HEAD(gotd_ref_updates, gotd_ref_update);
87 9148c8a7 2023-01-02 thomas static struct repo_write_client {
88 3efd8e31 2022-10-23 thomas uint32_t id;
90 621b8de0 2023-08-23 thomas int pack_pipe;
91 3efd8e31 2022-10-23 thomas struct got_pack pack;
92 3efd8e31 2022-10-23 thomas uint8_t pack_sha1[SHA1_DIGEST_LENGTH];
93 3efd8e31 2022-10-23 thomas int packidx_fd;
94 3efd8e31 2022-10-23 thomas struct gotd_ref_updates ref_updates;
95 3efd8e31 2022-10-23 thomas int nref_updates;
96 49563dfb 2023-01-28 thomas int nref_del;
97 d98779cd 2023-01-19 thomas int nref_new;
98 f9542c24 2023-04-14 thomas int nref_move;
99 9148c8a7 2023-01-02 thomas } repo_write_client;
101 3efd8e31 2022-10-23 thomas static volatile sig_atomic_t sigint_received;
102 3efd8e31 2022-10-23 thomas static volatile sig_atomic_t sigterm_received;
104 3efd8e31 2022-10-23 thomas static void
105 3efd8e31 2022-10-23 thomas catch_sigint(int signo)
107 3efd8e31 2022-10-23 thomas sigint_received = 1;
110 3efd8e31 2022-10-23 thomas static void
111 3efd8e31 2022-10-23 thomas catch_sigterm(int signo)
113 3efd8e31 2022-10-23 thomas sigterm_received = 1;
116 3efd8e31 2022-10-23 thomas static const struct got_error *
117 3efd8e31 2022-10-23 thomas check_cancelled(void *arg)
119 3efd8e31 2022-10-23 thomas if (sigint_received || sigterm_received)
120 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_CANCELLED);
122 3efd8e31 2022-10-23 thomas return NULL;
125 3efd8e31 2022-10-23 thomas static const struct got_error *
126 3efd8e31 2022-10-23 thomas send_peeled_tag_ref(struct got_reference *ref, struct got_object *obj,
127 3efd8e31 2022-10-23 thomas struct imsgbuf *ibuf)
129 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
130 3efd8e31 2022-10-23 thomas struct got_tag_object *tag;
131 3efd8e31 2022-10-23 thomas size_t namelen, len;
132 3efd8e31 2022-10-23 thomas char *peeled_refname = NULL;
133 3efd8e31 2022-10-23 thomas struct got_object_id *id;
134 3efd8e31 2022-10-23 thomas struct ibuf *wbuf;
136 3efd8e31 2022-10-23 thomas err = got_object_tag_open(&tag, repo_write.repo, obj);
138 3efd8e31 2022-10-23 thomas return err;
140 3efd8e31 2022-10-23 thomas if (asprintf(&peeled_refname, "%s^{}", got_ref_get_name(ref)) == -1) {
141 3efd8e31 2022-10-23 thomas err = got_error_from_errno("asprintf");
142 3efd8e31 2022-10-23 thomas goto done;
145 3efd8e31 2022-10-23 thomas id = got_object_tag_get_object_id(tag);
146 3efd8e31 2022-10-23 thomas namelen = strlen(peeled_refname);
148 3efd8e31 2022-10-23 thomas len = sizeof(struct gotd_imsg_ref) + namelen;
149 3efd8e31 2022-10-23 thomas if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
150 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_NO_SPACE);
151 3efd8e31 2022-10-23 thomas goto done;
154 3efd8e31 2022-10-23 thomas wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
155 3efd8e31 2022-10-23 thomas repo_write.pid, len);
156 3efd8e31 2022-10-23 thomas if (wbuf == NULL) {
157 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_create REF");
158 3efd8e31 2022-10-23 thomas goto done;
161 3efd8e31 2022-10-23 thomas /* Keep in sync with struct gotd_imsg_ref definition. */
162 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1) {
163 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_add REF");
164 3efd8e31 2022-10-23 thomas goto done;
166 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1) {
167 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_add REF");
168 3efd8e31 2022-10-23 thomas goto done;
170 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, peeled_refname, namelen) == -1) {
171 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_add REF");
172 3efd8e31 2022-10-23 thomas goto done;
175 3efd8e31 2022-10-23 thomas wbuf->fd = -1;
176 3efd8e31 2022-10-23 thomas imsg_close(ibuf, wbuf);
178 3efd8e31 2022-10-23 thomas got_object_tag_close(tag);
179 3efd8e31 2022-10-23 thomas return err;
182 3efd8e31 2022-10-23 thomas static const struct got_error *
183 3efd8e31 2022-10-23 thomas send_ref(struct got_reference *ref, struct imsgbuf *ibuf)
185 3efd8e31 2022-10-23 thomas const struct got_error *err;
186 3efd8e31 2022-10-23 thomas const char *refname = got_ref_get_name(ref);
187 3efd8e31 2022-10-23 thomas size_t namelen;
188 3efd8e31 2022-10-23 thomas struct got_object_id *id = NULL;
189 3efd8e31 2022-10-23 thomas struct got_object *obj = NULL;
190 3efd8e31 2022-10-23 thomas size_t len;
191 3efd8e31 2022-10-23 thomas struct ibuf *wbuf;
193 3efd8e31 2022-10-23 thomas namelen = strlen(refname);
195 3efd8e31 2022-10-23 thomas len = sizeof(struct gotd_imsg_ref) + namelen;
196 3efd8e31 2022-10-23 thomas if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
197 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_NO_SPACE);
199 3efd8e31 2022-10-23 thomas err = got_ref_resolve(&id, repo_write.repo, ref);
201 3efd8e31 2022-10-23 thomas return err;
203 3efd8e31 2022-10-23 thomas wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
204 3efd8e31 2022-10-23 thomas repo_write.pid, len);
205 3efd8e31 2022-10-23 thomas if (wbuf == NULL) {
206 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_create REF");
207 3efd8e31 2022-10-23 thomas goto done;
210 3efd8e31 2022-10-23 thomas /* Keep in sync with struct gotd_imsg_ref definition. */
211 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -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, &namelen, sizeof(namelen)) == -1)
214 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add REF");
215 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, refname, namelen) == -1)
216 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add REF");
218 3efd8e31 2022-10-23 thomas wbuf->fd = -1;
219 3efd8e31 2022-10-23 thomas imsg_close(ibuf, wbuf);
221 3efd8e31 2022-10-23 thomas err = got_object_open(&obj, repo_write.repo, id);
223 3efd8e31 2022-10-23 thomas goto done;
224 3efd8e31 2022-10-23 thomas if (obj->type == GOT_OBJ_TYPE_TAG)
225 3efd8e31 2022-10-23 thomas err = send_peeled_tag_ref(ref, obj, ibuf);
228 3efd8e31 2022-10-23 thomas got_object_close(obj);
229 3efd8e31 2022-10-23 thomas free(id);
230 3efd8e31 2022-10-23 thomas return err;
233 3efd8e31 2022-10-23 thomas static const struct got_error *
234 9148c8a7 2023-01-02 thomas list_refs(struct imsg *imsg)
236 3efd8e31 2022-10-23 thomas const struct got_error *err;
237 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
238 3efd8e31 2022-10-23 thomas struct got_reflist_head refs;
239 3efd8e31 2022-10-23 thomas struct got_reflist_entry *re;
240 3efd8e31 2022-10-23 thomas struct gotd_imsg_list_refs_internal ireq;
241 3efd8e31 2022-10-23 thomas size_t datalen;
242 3efd8e31 2022-10-23 thomas struct gotd_imsg_reflist irefs;
243 3efd8e31 2022-10-23 thomas struct imsgbuf ibuf;
244 3efd8e31 2022-10-23 thomas int client_fd = imsg->fd;
246 3efd8e31 2022-10-23 thomas TAILQ_INIT(&refs);
248 3efd8e31 2022-10-23 thomas if (client_fd == -1)
249 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
251 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
252 3efd8e31 2022-10-23 thomas if (datalen != sizeof(ireq))
253 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
254 3efd8e31 2022-10-23 thomas memcpy(&ireq, imsg->data, sizeof(ireq));
256 9148c8a7 2023-01-02 thomas if (ireq.client_id == 0)
257 9148c8a7 2023-01-02 thomas return got_error(GOT_ERR_CLIENT_ID);
258 9148c8a7 2023-01-02 thomas if (client->id != 0) {
259 9148c8a7 2023-01-02 thomas return got_error_msg(GOT_ERR_CLIENT_ID,
260 9148c8a7 2023-01-02 thomas "duplicate list-refs request");
262 9148c8a7 2023-01-02 thomas client->id = ireq.client_id;
263 9148c8a7 2023-01-02 thomas client->fd = client_fd;
264 9148c8a7 2023-01-02 thomas client->nref_updates = 0;
265 49563dfb 2023-01-28 thomas client->nref_del = 0;
266 d98779cd 2023-01-19 thomas client->nref_new = 0;
267 f9542c24 2023-04-14 thomas client->nref_move = 0;
269 3efd8e31 2022-10-23 thomas imsg_init(&ibuf, client_fd);
271 3efd8e31 2022-10-23 thomas err = got_ref_list(&refs, repo_write.repo, "",
272 3efd8e31 2022-10-23 thomas got_ref_cmp_by_name, NULL);
274 3efd8e31 2022-10-23 thomas return err;
276 3efd8e31 2022-10-23 thomas memset(&irefs, 0, sizeof(irefs));
277 3efd8e31 2022-10-23 thomas TAILQ_FOREACH(re, &refs, entry) {
278 3efd8e31 2022-10-23 thomas struct got_object_id *id;
279 3efd8e31 2022-10-23 thomas int obj_type;
281 3efd8e31 2022-10-23 thomas if (got_ref_is_symbolic(re->ref))
282 3efd8e31 2022-10-23 thomas continue;
284 3efd8e31 2022-10-23 thomas irefs.nrefs++;
286 3efd8e31 2022-10-23 thomas /* Account for a peeled tag refs. */
287 3efd8e31 2022-10-23 thomas err = got_ref_resolve(&id, repo_write.repo, re->ref);
289 3efd8e31 2022-10-23 thomas goto done;
290 8652e561 2023-01-14 thomas err = got_object_get_type(&obj_type, repo_write.repo, id);
291 3efd8e31 2022-10-23 thomas free(id);
293 3efd8e31 2022-10-23 thomas goto done;
294 3efd8e31 2022-10-23 thomas if (obj_type == GOT_OBJ_TYPE_TAG)
295 3efd8e31 2022-10-23 thomas irefs.nrefs++;
298 3efd8e31 2022-10-23 thomas if (imsg_compose(&ibuf, GOTD_IMSG_REFLIST, PROC_REPO_WRITE,
299 3efd8e31 2022-10-23 thomas repo_write.pid, -1, &irefs, sizeof(irefs)) == -1) {
300 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_compose REFLIST");
301 3efd8e31 2022-10-23 thomas goto done;
304 3efd8e31 2022-10-23 thomas TAILQ_FOREACH(re, &refs, entry) {
305 3efd8e31 2022-10-23 thomas if (got_ref_is_symbolic(re->ref))
306 3efd8e31 2022-10-23 thomas continue;
307 3efd8e31 2022-10-23 thomas err = send_ref(re->ref, &ibuf);
309 3efd8e31 2022-10-23 thomas goto done;
312 3efd8e31 2022-10-23 thomas err = gotd_imsg_flush(&ibuf);
314 3efd8e31 2022-10-23 thomas got_ref_list_free(&refs);
315 3efd8e31 2022-10-23 thomas imsg_clear(&ibuf);
316 3efd8e31 2022-10-23 thomas return err;
319 3efd8e31 2022-10-23 thomas static const struct got_error *
320 6d7eb4f7 2023-04-04 thomas validate_namespace(const char *namespace)
322 3efd8e31 2022-10-23 thomas size_t len = strlen(namespace);
324 3efd8e31 2022-10-23 thomas if (len < 5 || strncmp("refs/", namespace, 5) != 0 ||
325 3efd8e31 2022-10-23 thomas namespace[len -1] != '/') {
326 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_BAD_REF_NAME,
327 3efd8e31 2022-10-23 thomas "reference namespace '%s'", namespace);
330 6d7eb4f7 2023-04-04 thomas return NULL;
333 6d7eb4f7 2023-04-04 thomas static const struct got_error *
334 6d7eb4f7 2023-04-04 thomas protect_ref_namespace(const char *refname, const char *namespace)
336 6d7eb4f7 2023-04-04 thomas const struct got_error *err;
338 6d7eb4f7 2023-04-04 thomas err = validate_namespace(namespace);
340 6d7eb4f7 2023-04-04 thomas return err;
342 6d7eb4f7 2023-04-04 thomas if (strncmp(namespace, refname, strlen(namespace)) == 0)
343 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_REFS_PROTECTED, "%s", namespace);
345 3efd8e31 2022-10-23 thomas return NULL;
348 3efd8e31 2022-10-23 thomas static const struct got_error *
349 6d7eb4f7 2023-04-04 thomas verify_object_type(struct got_object_id *id, int expected_obj_type,
350 6d7eb4f7 2023-04-04 thomas struct got_pack *pack, struct got_packidx *packidx)
352 6d7eb4f7 2023-04-04 thomas const struct got_error *err;
353 6d7eb4f7 2023-04-04 thomas char hex[SHA1_DIGEST_STRING_LENGTH];
354 6d7eb4f7 2023-04-04 thomas struct got_object *obj;
356 6d7eb4f7 2023-04-04 thomas const char *typestr;
358 6d7eb4f7 2023-04-04 thomas idx = got_packidx_get_object_idx(packidx, id);
359 6d7eb4f7 2023-04-04 thomas if (idx == -1) {
360 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(id->sha1, hex, sizeof(hex));
361 6d7eb4f7 2023-04-04 thomas return got_error_fmt(GOT_ERR_BAD_PACKFILE,
362 6d7eb4f7 2023-04-04 thomas "object %s is missing from pack file", hex);
365 6d7eb4f7 2023-04-04 thomas err = got_object_open_from_packfile(&obj, id, pack, packidx,
366 6d7eb4f7 2023-04-04 thomas idx, repo_write.repo);
368 6d7eb4f7 2023-04-04 thomas return err;
370 6d7eb4f7 2023-04-04 thomas if (obj->type != expected_obj_type) {
371 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(id->sha1, hex, sizeof(hex));
372 6d7eb4f7 2023-04-04 thomas got_object_type_label(&typestr, expected_obj_type);
373 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_OBJ_TYPE,
374 6d7eb4f7 2023-04-04 thomas "%s is not pointing at a %s object", hex, typestr);
376 6d7eb4f7 2023-04-04 thomas got_object_close(obj);
377 6d7eb4f7 2023-04-04 thomas return err;
380 6d7eb4f7 2023-04-04 thomas static const struct got_error *
381 6d7eb4f7 2023-04-04 thomas protect_tag_namespace(const char *namespace, struct got_pack *pack,
382 6d7eb4f7 2023-04-04 thomas struct got_packidx *packidx, struct gotd_ref_update *ref_update)
384 6d7eb4f7 2023-04-04 thomas const struct got_error *err;
386 6d7eb4f7 2023-04-04 thomas err = validate_namespace(namespace);
388 6d7eb4f7 2023-04-04 thomas return err;
390 6d7eb4f7 2023-04-04 thomas if (strncmp(namespace, got_ref_get_name(ref_update->ref),
391 6d7eb4f7 2023-04-04 thomas strlen(namespace)) != 0)
392 6d7eb4f7 2023-04-04 thomas return NULL;
394 6d7eb4f7 2023-04-04 thomas if (!ref_update->ref_is_new)
395 6d7eb4f7 2023-04-04 thomas return got_error_fmt(GOT_ERR_REFS_PROTECTED, "%s", namespace);
397 6d7eb4f7 2023-04-04 thomas return verify_object_type(&ref_update->new_id, GOT_OBJ_TYPE_TAG,
398 6d7eb4f7 2023-04-04 thomas pack, packidx);
401 6d7eb4f7 2023-04-04 thomas static const struct got_error *
402 6d7eb4f7 2023-04-04 thomas protect_require_yca(struct got_object_id *tip_id,
403 6d7eb4f7 2023-04-04 thomas size_t max_commits_to_traverse, struct got_pack *pack,
404 6d7eb4f7 2023-04-04 thomas struct got_packidx *packidx, struct got_reference *ref)
406 6d7eb4f7 2023-04-04 thomas const struct got_error *err;
407 6d7eb4f7 2023-04-04 thomas uint8_t *buf = NULL;
408 6d7eb4f7 2023-04-04 thomas size_t len;
409 6d7eb4f7 2023-04-04 thomas struct got_object_id *expected_yca_id = NULL;
410 6d7eb4f7 2023-04-04 thomas struct got_object *obj = NULL;
411 6d7eb4f7 2023-04-04 thomas struct got_commit_object *commit = NULL;
412 6d7eb4f7 2023-04-04 thomas char hex[SHA1_DIGEST_STRING_LENGTH];
413 6d7eb4f7 2023-04-04 thomas const struct got_object_id_queue *parent_ids;
414 6d7eb4f7 2023-04-04 thomas struct got_object_id_queue ids;
415 6d7eb4f7 2023-04-04 thomas struct got_object_qid *pid, *qid;
416 6d7eb4f7 2023-04-04 thomas struct got_object_idset *traversed_set = NULL;
417 6d7eb4f7 2023-04-04 thomas int found_yca = 0, obj_type;
419 6d7eb4f7 2023-04-04 thomas STAILQ_INIT(&ids);
421 6d7eb4f7 2023-04-04 thomas err = got_ref_resolve(&expected_yca_id, repo_write.repo, ref);
423 6d7eb4f7 2023-04-04 thomas return err;
425 6d7eb4f7 2023-04-04 thomas err = got_object_get_type(&obj_type, repo_write.repo, expected_yca_id);
427 6d7eb4f7 2023-04-04 thomas goto done;
429 6d7eb4f7 2023-04-04 thomas if (obj_type != GOT_OBJ_TYPE_COMMIT) {
430 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(expected_yca_id->sha1, hex, sizeof(hex));
431 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_OBJ_TYPE,
432 6d7eb4f7 2023-04-04 thomas "%s is not pointing at a commit object", hex);
433 6d7eb4f7 2023-04-04 thomas goto done;
436 6d7eb4f7 2023-04-04 thomas traversed_set = got_object_idset_alloc();
437 6d7eb4f7 2023-04-04 thomas if (traversed_set == NULL) {
438 6d7eb4f7 2023-04-04 thomas err = got_error_from_errno("got_object_idset_alloc");
439 6d7eb4f7 2023-04-04 thomas goto done;
442 6d7eb4f7 2023-04-04 thomas err = got_object_qid_alloc(&qid, tip_id);
444 6d7eb4f7 2023-04-04 thomas goto done;
445 6d7eb4f7 2023-04-04 thomas STAILQ_INSERT_TAIL(&ids, qid, entry);
446 6d7eb4f7 2023-04-04 thomas while (!STAILQ_EMPTY(&ids)) {
447 6d7eb4f7 2023-04-04 thomas err = check_cancelled(NULL);
451 6d7eb4f7 2023-04-04 thomas qid = STAILQ_FIRST(&ids);
452 6d7eb4f7 2023-04-04 thomas if (got_object_id_cmp(&qid->id, expected_yca_id) == 0) {
453 6d7eb4f7 2023-04-04 thomas found_yca = 1;
457 6d7eb4f7 2023-04-04 thomas if (got_object_idset_num_elements(traversed_set) >=
458 6d7eb4f7 2023-04-04 thomas max_commits_to_traverse)
461 6d7eb4f7 2023-04-04 thomas if (got_object_idset_contains(traversed_set, &qid->id)) {
462 6d7eb4f7 2023-04-04 thomas STAILQ_REMOVE_HEAD(&ids, entry);
463 6d7eb4f7 2023-04-04 thomas got_object_qid_free(qid);
464 6d7eb4f7 2023-04-04 thomas qid = NULL;
465 6d7eb4f7 2023-04-04 thomas continue;
467 6d7eb4f7 2023-04-04 thomas err = got_object_idset_add(traversed_set, &qid->id, NULL);
469 6d7eb4f7 2023-04-04 thomas goto done;
471 6d7eb4f7 2023-04-04 thomas err = got_object_open(&obj, repo_write.repo, &qid->id);
472 6d7eb4f7 2023-04-04 thomas if (err && err->code != GOT_ERR_NO_OBJ)
473 6d7eb4f7 2023-04-04 thomas goto done;
474 6d7eb4f7 2023-04-04 thomas err = NULL;
475 6d7eb4f7 2023-04-04 thomas if (obj) {
476 6d7eb4f7 2023-04-04 thomas err = got_object_commit_open(&commit, repo_write.repo,
479 6d7eb4f7 2023-04-04 thomas goto done;
483 6d7eb4f7 2023-04-04 thomas idx = got_packidx_get_object_idx(packidx, &qid->id);
484 6d7eb4f7 2023-04-04 thomas if (idx == -1) {
485 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(qid->id.sha1,
486 6d7eb4f7 2023-04-04 thomas hex, sizeof(hex));
487 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_BAD_PACKFILE,
488 6d7eb4f7 2023-04-04 thomas "object %s is missing from pack file", hex);
489 6d7eb4f7 2023-04-04 thomas goto done;
492 6d7eb4f7 2023-04-04 thomas err = got_object_open_from_packfile(&obj, &qid->id,
493 6d7eb4f7 2023-04-04 thomas pack, packidx, idx, repo_write.repo);
495 6d7eb4f7 2023-04-04 thomas goto done;
497 6d7eb4f7 2023-04-04 thomas if (obj->type != GOT_OBJ_TYPE_COMMIT) {
498 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(qid->id.sha1,
499 6d7eb4f7 2023-04-04 thomas hex, sizeof(hex));
500 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_OBJ_TYPE,
501 6d7eb4f7 2023-04-04 thomas "%s is not pointing at a commit object",
503 6d7eb4f7 2023-04-04 thomas goto done;
506 6d7eb4f7 2023-04-04 thomas err = got_packfile_extract_object_to_mem(&buf, &len,
507 6d7eb4f7 2023-04-04 thomas obj, pack);
509 6d7eb4f7 2023-04-04 thomas goto done;
511 6d7eb4f7 2023-04-04 thomas err = got_object_parse_commit(&commit, buf, len);
513 6d7eb4f7 2023-04-04 thomas goto done;
515 6d7eb4f7 2023-04-04 thomas free(buf);
516 6d7eb4f7 2023-04-04 thomas buf = NULL;
519 6d7eb4f7 2023-04-04 thomas got_object_close(obj);
520 6d7eb4f7 2023-04-04 thomas obj = NULL;
522 6d7eb4f7 2023-04-04 thomas STAILQ_REMOVE_HEAD(&ids, entry);
523 6d7eb4f7 2023-04-04 thomas got_object_qid_free(qid);
524 6d7eb4f7 2023-04-04 thomas qid = NULL;
526 6d7eb4f7 2023-04-04 thomas if (got_object_commit_get_nparents(commit) == 0)
529 6d7eb4f7 2023-04-04 thomas parent_ids = got_object_commit_get_parent_ids(commit);
530 6d7eb4f7 2023-04-04 thomas STAILQ_FOREACH(pid, parent_ids, entry) {
531 6d7eb4f7 2023-04-04 thomas err = check_cancelled(NULL);
533 6d7eb4f7 2023-04-04 thomas goto done;
534 6d7eb4f7 2023-04-04 thomas err = got_object_qid_alloc(&qid, &pid->id);
536 6d7eb4f7 2023-04-04 thomas goto done;
537 6d7eb4f7 2023-04-04 thomas STAILQ_INSERT_TAIL(&ids, qid, entry);
538 6d7eb4f7 2023-04-04 thomas qid = NULL;
540 6d7eb4f7 2023-04-04 thomas got_object_commit_close(commit);
541 6d7eb4f7 2023-04-04 thomas commit = NULL;
544 6d7eb4f7 2023-04-04 thomas if (!found_yca) {
545 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_REF_PROTECTED, "%s",
546 6d7eb4f7 2023-04-04 thomas got_ref_get_name(ref));
549 6d7eb4f7 2023-04-04 thomas got_object_idset_free(traversed_set);
550 6d7eb4f7 2023-04-04 thomas got_object_id_queue_free(&ids);
551 6d7eb4f7 2023-04-04 thomas free(buf);
553 6d7eb4f7 2023-04-04 thomas got_object_close(obj);
554 6d7eb4f7 2023-04-04 thomas if (commit)
555 6d7eb4f7 2023-04-04 thomas got_object_commit_close(commit);
556 6d7eb4f7 2023-04-04 thomas free(expected_yca_id);
557 6d7eb4f7 2023-04-04 thomas return err;
560 6d7eb4f7 2023-04-04 thomas static const struct got_error *
561 6d7eb4f7 2023-04-04 thomas protect_branch_namespace(const char *namespace, struct got_pack *pack,
562 6d7eb4f7 2023-04-04 thomas struct got_packidx *packidx, struct gotd_ref_update *ref_update)
564 6d7eb4f7 2023-04-04 thomas const struct got_error *err;
566 6d7eb4f7 2023-04-04 thomas err = validate_namespace(namespace);
568 6d7eb4f7 2023-04-04 thomas return err;
570 6d7eb4f7 2023-04-04 thomas if (strncmp(namespace, got_ref_get_name(ref_update->ref),
571 6d7eb4f7 2023-04-04 thomas strlen(namespace)) != 0)
572 6d7eb4f7 2023-04-04 thomas return NULL;
574 6d7eb4f7 2023-04-04 thomas if (ref_update->ref_is_new) {
575 6d7eb4f7 2023-04-04 thomas return verify_object_type(&ref_update->new_id,
576 6d7eb4f7 2023-04-04 thomas GOT_OBJ_TYPE_COMMIT, pack, packidx);
579 6d7eb4f7 2023-04-04 thomas return protect_require_yca(&ref_update->new_id,
580 6d7eb4f7 2023-04-04 thomas be32toh(packidx->hdr.fanout_table[0xff]), pack, packidx,
581 6d7eb4f7 2023-04-04 thomas ref_update->ref);
584 6d7eb4f7 2023-04-04 thomas static const struct got_error *
585 6d7eb4f7 2023-04-04 thomas protect_branch(const char *refname, struct got_pack *pack,
586 6d7eb4f7 2023-04-04 thomas struct got_packidx *packidx, struct gotd_ref_update *ref_update)
588 6d7eb4f7 2023-04-04 thomas if (strcmp(refname, got_ref_get_name(ref_update->ref)) != 0)
589 6d7eb4f7 2023-04-04 thomas return NULL;
591 6d7eb4f7 2023-04-04 thomas /* Always allow new branches to be created. */
592 6d7eb4f7 2023-04-04 thomas if (ref_update->ref_is_new) {
593 6d7eb4f7 2023-04-04 thomas return verify_object_type(&ref_update->new_id,
594 6d7eb4f7 2023-04-04 thomas GOT_OBJ_TYPE_COMMIT, pack, packidx);
597 6d7eb4f7 2023-04-04 thomas return protect_require_yca(&ref_update->new_id,
598 6d7eb4f7 2023-04-04 thomas be32toh(packidx->hdr.fanout_table[0xff]), pack, packidx,
599 6d7eb4f7 2023-04-04 thomas ref_update->ref);
602 6d7eb4f7 2023-04-04 thomas static const struct got_error *
603 9148c8a7 2023-01-02 thomas recv_ref_update(struct imsg *imsg)
605 49563dfb 2023-01-28 thomas static const char zero_id[SHA1_DIGEST_LENGTH];
606 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
607 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
608 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_update iref;
609 3efd8e31 2022-10-23 thomas size_t datalen;
610 3efd8e31 2022-10-23 thomas char *refname = NULL;
611 3efd8e31 2022-10-23 thomas struct got_reference *ref = NULL;
612 3efd8e31 2022-10-23 thomas struct got_object_id *id = NULL;
613 3efd8e31 2022-10-23 thomas struct imsgbuf ibuf;
614 3efd8e31 2022-10-23 thomas struct gotd_ref_update *ref_update = NULL;
616 3efd8e31 2022-10-23 thomas log_debug("ref-update received");
618 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
619 3efd8e31 2022-10-23 thomas if (datalen < sizeof(iref))
620 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
621 3efd8e31 2022-10-23 thomas memcpy(&iref, imsg->data, sizeof(iref));
622 3efd8e31 2022-10-23 thomas if (datalen != sizeof(iref) + iref.name_len)
623 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
625 9148c8a7 2023-01-02 thomas imsg_init(&ibuf, client->fd);
627 fcbb06bf 2023-01-14 thomas refname = strndup(imsg->data + sizeof(iref), iref.name_len);
628 3efd8e31 2022-10-23 thomas if (refname == NULL)
629 fcbb06bf 2023-01-14 thomas return got_error_from_errno("strndup");
631 3efd8e31 2022-10-23 thomas ref_update = calloc(1, sizeof(*ref_update));
632 3efd8e31 2022-10-23 thomas if (ref_update == NULL) {
633 3efd8e31 2022-10-23 thomas err = got_error_from_errno("malloc");
634 3efd8e31 2022-10-23 thomas goto done;
637 3efd8e31 2022-10-23 thomas memcpy(ref_update->old_id.sha1, iref.old_id, SHA1_DIGEST_LENGTH);
638 3efd8e31 2022-10-23 thomas memcpy(ref_update->new_id.sha1, iref.new_id, SHA1_DIGEST_LENGTH);
640 3efd8e31 2022-10-23 thomas err = got_ref_open(&ref, repo_write.repo, refname, 0);
641 3efd8e31 2022-10-23 thomas if (err) {
642 3efd8e31 2022-10-23 thomas if (err->code != GOT_ERR_NOT_REF)
643 3efd8e31 2022-10-23 thomas goto done;
644 6d7eb4f7 2023-04-04 thomas if (memcmp(ref_update->new_id.sha1,
645 6d7eb4f7 2023-04-04 thomas zero_id, sizeof(zero_id)) == 0) {
646 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_BAD_OBJ_ID,
647 6d7eb4f7 2023-04-04 thomas "%s", refname);
648 6d7eb4f7 2023-04-04 thomas goto done;
650 3efd8e31 2022-10-23 thomas err = got_ref_alloc(&ref, refname, &ref_update->new_id);
652 3efd8e31 2022-10-23 thomas goto done;
653 3efd8e31 2022-10-23 thomas ref_update->ref_is_new = 1;
654 d98779cd 2023-01-19 thomas client->nref_new++;
656 3efd8e31 2022-10-23 thomas if (got_ref_is_symbolic(ref)) {
657 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_BAD_REF_TYPE,
658 3efd8e31 2022-10-23 thomas "'%s' is a symbolic reference and cannot "
659 3efd8e31 2022-10-23 thomas "be updated", got_ref_get_name(ref));
660 3efd8e31 2022-10-23 thomas goto done;
662 3efd8e31 2022-10-23 thomas if (strncmp("refs/", got_ref_get_name(ref), 5) != 0) {
663 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_BAD_REF_NAME,
664 3efd8e31 2022-10-23 thomas "%s: does not begin with 'refs/'",
665 3efd8e31 2022-10-23 thomas got_ref_get_name(ref));
666 3efd8e31 2022-10-23 thomas goto done;
669 6d7eb4f7 2023-04-04 thomas err = protect_ref_namespace(got_ref_get_name(ref), "refs/got/");
671 3efd8e31 2022-10-23 thomas goto done;
672 6d7eb4f7 2023-04-04 thomas err = protect_ref_namespace(got_ref_get_name(ref), "refs/remotes/");
674 3efd8e31 2022-10-23 thomas goto done;
676 3efd8e31 2022-10-23 thomas if (!ref_update->ref_is_new) {
678 3efd8e31 2022-10-23 thomas * Ensure the client's idea of this update is still valid.
679 3efd8e31 2022-10-23 thomas * At this point we can only return an error, to prevent
680 3efd8e31 2022-10-23 thomas * the client from uploading a pack file which will likely
681 3efd8e31 2022-10-23 thomas * have to be discarded.
683 3efd8e31 2022-10-23 thomas err = got_ref_resolve(&id, repo_write.repo, ref);
685 3efd8e31 2022-10-23 thomas goto done;
687 3efd8e31 2022-10-23 thomas if (got_object_id_cmp(id, &ref_update->old_id) != 0) {
688 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_REF_BUSY,
689 3efd8e31 2022-10-23 thomas "%s has been modified by someone else "
690 3efd8e31 2022-10-23 thomas "while transaction was in progress",
691 3efd8e31 2022-10-23 thomas got_ref_get_name(ref));
692 3efd8e31 2022-10-23 thomas goto done;
696 3efd8e31 2022-10-23 thomas gotd_imsg_send_ack(&ref_update->new_id, &ibuf, PROC_REPO_WRITE,
697 3efd8e31 2022-10-23 thomas repo_write.pid);
699 3efd8e31 2022-10-23 thomas ref_update->ref = ref;
700 49563dfb 2023-01-28 thomas if (memcmp(ref_update->new_id.sha1, zero_id, sizeof(zero_id)) == 0) {
701 49563dfb 2023-01-28 thomas ref_update->delete_ref = 1;
702 49563dfb 2023-01-28 thomas client->nref_del++;
704 9148c8a7 2023-01-02 thomas STAILQ_INSERT_HEAD(&client->ref_updates, ref_update, entry);
705 9148c8a7 2023-01-02 thomas client->nref_updates++;
706 3efd8e31 2022-10-23 thomas ref = NULL;
707 3efd8e31 2022-10-23 thomas ref_update = NULL;
710 3efd8e31 2022-10-23 thomas got_ref_close(ref);
711 3efd8e31 2022-10-23 thomas free(ref_update);
712 3efd8e31 2022-10-23 thomas free(refname);
713 3efd8e31 2022-10-23 thomas free(id);
714 3efd8e31 2022-10-23 thomas return err;
717 3efd8e31 2022-10-23 thomas static const struct got_error *
718 3efd8e31 2022-10-23 thomas pack_index_progress(void *arg, uint32_t nobj_total, uint32_t nobj_indexed,
719 3efd8e31 2022-10-23 thomas uint32_t nobj_loose, uint32_t nobj_resolved)
721 3efd8e31 2022-10-23 thomas int p_indexed = 0, p_resolved = 0;
722 3efd8e31 2022-10-23 thomas int nobj_delta = nobj_total - nobj_loose;
724 3efd8e31 2022-10-23 thomas if (nobj_total > 0)
725 3efd8e31 2022-10-23 thomas p_indexed = (nobj_indexed * 100) / nobj_total;
727 3efd8e31 2022-10-23 thomas if (nobj_delta > 0)
728 3efd8e31 2022-10-23 thomas p_resolved = (nobj_resolved * 100) / nobj_delta;
730 3efd8e31 2022-10-23 thomas if (p_resolved > 0) {
731 3efd8e31 2022-10-23 thomas log_debug("indexing %d objects %d%%; resolving %d deltas %d%%",
732 3efd8e31 2022-10-23 thomas nobj_total, p_indexed, nobj_delta, p_resolved);
734 3efd8e31 2022-10-23 thomas log_debug("indexing %d objects %d%%", nobj_total, p_indexed);
736 3efd8e31 2022-10-23 thomas return NULL;
739 3efd8e31 2022-10-23 thomas static const struct got_error *
740 3efd8e31 2022-10-23 thomas read_more_pack_stream(int infd, BUF *buf, size_t minsize)
742 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
743 3efd8e31 2022-10-23 thomas uint8_t readahead[65536];
744 3efd8e31 2022-10-23 thomas size_t have, newlen;
746 3efd8e31 2022-10-23 thomas err = got_poll_read_full(infd, &have,
747 3efd8e31 2022-10-23 thomas readahead, sizeof(readahead), minsize);
749 3efd8e31 2022-10-23 thomas return err;
751 3efd8e31 2022-10-23 thomas err = buf_append(&newlen, buf, readahead, have);
753 3efd8e31 2022-10-23 thomas return err;
754 8652e561 2023-01-14 thomas return NULL;
757 3efd8e31 2022-10-23 thomas static const struct got_error *
758 3efd8e31 2022-10-23 thomas copy_object_type_and_size(uint8_t *type, uint64_t *size, int infd, int outfd,
759 b16893ba 2023-02-24 thomas off_t *outsize, BUF *buf, size_t *buf_pos, struct got_hash *ctx)
761 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
762 3efd8e31 2022-10-23 thomas uint8_t t = 0;
763 3efd8e31 2022-10-23 thomas uint64_t s = 0;
764 3efd8e31 2022-10-23 thomas uint8_t sizebuf[8];
765 3efd8e31 2022-10-23 thomas size_t i = 0;
766 3efd8e31 2022-10-23 thomas off_t obj_offset = *outsize;
769 3efd8e31 2022-10-23 thomas /* We do not support size values which don't fit in 64 bit. */
770 3efd8e31 2022-10-23 thomas if (i > 9)
771 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
772 fe3b5495 2022-10-25 thomas "packfile offset %lld", (long long)obj_offset);
774 3efd8e31 2022-10-23 thomas if (buf_len(buf) - *buf_pos < sizeof(sizebuf[0])) {
775 3efd8e31 2022-10-23 thomas err = read_more_pack_stream(infd, buf,
776 3efd8e31 2022-10-23 thomas sizeof(sizebuf[0]));
778 3efd8e31 2022-10-23 thomas return err;
781 3efd8e31 2022-10-23 thomas sizebuf[i] = buf_getc(buf, *buf_pos);
782 3efd8e31 2022-10-23 thomas *buf_pos += sizeof(sizebuf[i]);
784 3efd8e31 2022-10-23 thomas if (i == 0) {
785 3efd8e31 2022-10-23 thomas t = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
786 3efd8e31 2022-10-23 thomas GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
787 3efd8e31 2022-10-23 thomas s = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_VAL_MASK);
789 3efd8e31 2022-10-23 thomas size_t shift = 4 + 7 * (i - 1);
790 3efd8e31 2022-10-23 thomas s |= ((sizebuf[i] & GOT_PACK_OBJ_SIZE_VAL_MASK) <<
794 3efd8e31 2022-10-23 thomas } while (sizebuf[i - 1] & GOT_PACK_OBJ_SIZE_MORE);
796 3efd8e31 2022-10-23 thomas err = got_pack_hwrite(outfd, sizebuf, i, ctx);
798 3efd8e31 2022-10-23 thomas return err;
799 3efd8e31 2022-10-23 thomas *outsize += i;
801 3efd8e31 2022-10-23 thomas *type = t;
802 3efd8e31 2022-10-23 thomas *size = s;
803 3efd8e31 2022-10-23 thomas return NULL;
806 3efd8e31 2022-10-23 thomas static const struct got_error *
807 3efd8e31 2022-10-23 thomas copy_ref_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
808 b16893ba 2023-02-24 thomas struct got_hash *ctx)
810 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
811 3efd8e31 2022-10-23 thomas size_t remain = buf_len(buf) - *buf_pos;
813 3efd8e31 2022-10-23 thomas if (remain < SHA1_DIGEST_LENGTH) {
814 3efd8e31 2022-10-23 thomas err = read_more_pack_stream(infd, buf,
815 3efd8e31 2022-10-23 thomas SHA1_DIGEST_LENGTH - remain);
817 3efd8e31 2022-10-23 thomas return err;
820 3efd8e31 2022-10-23 thomas err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
821 3efd8e31 2022-10-23 thomas SHA1_DIGEST_LENGTH, ctx);
823 3efd8e31 2022-10-23 thomas return err;
825 3efd8e31 2022-10-23 thomas *buf_pos += SHA1_DIGEST_LENGTH;
826 3efd8e31 2022-10-23 thomas return NULL;
829 3efd8e31 2022-10-23 thomas static const struct got_error *
830 3efd8e31 2022-10-23 thomas copy_offset_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
831 b16893ba 2023-02-24 thomas struct got_hash *ctx)
833 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
834 3efd8e31 2022-10-23 thomas uint64_t o = 0;
835 3efd8e31 2022-10-23 thomas uint8_t offbuf[8];
836 3efd8e31 2022-10-23 thomas size_t i = 0;
837 3efd8e31 2022-10-23 thomas off_t obj_offset = *outsize;
840 3efd8e31 2022-10-23 thomas /* We do not support offset values which don't fit in 64 bit. */
841 3efd8e31 2022-10-23 thomas if (i > 8)
842 3efd8e31 2022-10-23 thomas return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
843 fe3b5495 2022-10-25 thomas "packfile offset %lld", (long long)obj_offset);
845 3efd8e31 2022-10-23 thomas if (buf_len(buf) - *buf_pos < sizeof(offbuf[0])) {
846 3efd8e31 2022-10-23 thomas err = read_more_pack_stream(infd, buf,
847 3efd8e31 2022-10-23 thomas sizeof(offbuf[0]));
849 3efd8e31 2022-10-23 thomas return err;
852 3efd8e31 2022-10-23 thomas offbuf[i] = buf_getc(buf, *buf_pos);
853 3efd8e31 2022-10-23 thomas *buf_pos += sizeof(offbuf[i]);
855 3efd8e31 2022-10-23 thomas if (i == 0)
856 3efd8e31 2022-10-23 thomas o = (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
860 3efd8e31 2022-10-23 thomas o += (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
863 3efd8e31 2022-10-23 thomas } while (offbuf[i - 1] & GOT_PACK_OBJ_DELTA_OFF_MORE);
865 3efd8e31 2022-10-23 thomas if (o < sizeof(struct got_packfile_hdr) || o > *outsize)
866 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PACK_OFFSET);
868 3efd8e31 2022-10-23 thomas err = got_pack_hwrite(outfd, offbuf, i, ctx);
870 3efd8e31 2022-10-23 thomas return err;
872 3efd8e31 2022-10-23 thomas *outsize += i;
873 3efd8e31 2022-10-23 thomas return NULL;
876 3efd8e31 2022-10-23 thomas static const struct got_error *
877 3efd8e31 2022-10-23 thomas copy_zstream(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
878 b16893ba 2023-02-24 thomas struct got_hash *ctx)
880 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
881 3efd8e31 2022-10-23 thomas z_stream z;
882 3efd8e31 2022-10-23 thomas int zret;
883 3efd8e31 2022-10-23 thomas char voidbuf[1024];
884 3efd8e31 2022-10-23 thomas size_t consumed_total = 0;
885 3efd8e31 2022-10-23 thomas off_t zstream_offset = *outsize;
887 3efd8e31 2022-10-23 thomas memset(&z, 0, sizeof(z));
889 3efd8e31 2022-10-23 thomas z.zalloc = Z_NULL;
890 3efd8e31 2022-10-23 thomas z.zfree = Z_NULL;
891 3efd8e31 2022-10-23 thomas zret = inflateInit(&z);
892 3efd8e31 2022-10-23 thomas if (zret != Z_OK) {
893 3efd8e31 2022-10-23 thomas if (zret == Z_ERRNO)
894 3efd8e31 2022-10-23 thomas return got_error_from_errno("inflateInit");
895 3efd8e31 2022-10-23 thomas if (zret == Z_MEM_ERROR) {
896 3efd8e31 2022-10-23 thomas errno = ENOMEM;
897 3efd8e31 2022-10-23 thomas return got_error_from_errno("inflateInit");
899 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_DECOMPRESSION,
900 3efd8e31 2022-10-23 thomas "inflateInit failed");
903 3efd8e31 2022-10-23 thomas while (zret != Z_STREAM_END) {
904 3efd8e31 2022-10-23 thomas size_t last_total_in, consumed;
907 3efd8e31 2022-10-23 thomas * Decompress into the void. Object data will be parsed
908 3efd8e31 2022-10-23 thomas * later, when the pack file is indexed. For now, we just
909 3efd8e31 2022-10-23 thomas * want to locate the end of the compressed stream.
911 3efd8e31 2022-10-23 thomas while (zret != Z_STREAM_END && buf_len(buf) - *buf_pos > 0) {
912 3efd8e31 2022-10-23 thomas last_total_in = z.total_in;
913 3efd8e31 2022-10-23 thomas z.next_in = buf_get(buf) + *buf_pos;
914 3efd8e31 2022-10-23 thomas z.avail_in = buf_len(buf) - *buf_pos;
915 3efd8e31 2022-10-23 thomas z.next_out = voidbuf;
916 3efd8e31 2022-10-23 thomas z.avail_out = sizeof(voidbuf);
918 3efd8e31 2022-10-23 thomas zret = inflate(&z, Z_SYNC_FLUSH);
919 3efd8e31 2022-10-23 thomas if (zret != Z_OK && zret != Z_BUF_ERROR &&
920 3efd8e31 2022-10-23 thomas zret != Z_STREAM_END) {
921 3efd8e31 2022-10-23 thomas err = got_error_fmt(GOT_ERR_DECOMPRESSION,
922 fe3b5495 2022-10-25 thomas "packfile offset %lld",
923 fe3b5495 2022-10-25 thomas (long long)zstream_offset);
924 3efd8e31 2022-10-23 thomas goto done;
926 3efd8e31 2022-10-23 thomas consumed = z.total_in - last_total_in;
928 3efd8e31 2022-10-23 thomas err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
929 3efd8e31 2022-10-23 thomas consumed, ctx);
931 3efd8e31 2022-10-23 thomas goto done;
933 3efd8e31 2022-10-23 thomas err = buf_discard(buf, *buf_pos + consumed);
935 3efd8e31 2022-10-23 thomas goto done;
936 3efd8e31 2022-10-23 thomas *buf_pos = 0;
938 3efd8e31 2022-10-23 thomas consumed_total += consumed;
941 3efd8e31 2022-10-23 thomas if (zret != Z_STREAM_END) {
942 3efd8e31 2022-10-23 thomas err = read_more_pack_stream(infd, buf, 1);
944 3efd8e31 2022-10-23 thomas goto done;
948 3efd8e31 2022-10-23 thomas if (err == NULL)
949 3efd8e31 2022-10-23 thomas *outsize += consumed_total;
951 3efd8e31 2022-10-23 thomas inflateEnd(&z);
952 3efd8e31 2022-10-23 thomas return err;
955 3efd8e31 2022-10-23 thomas static const struct got_error *
956 3efd8e31 2022-10-23 thomas validate_object_type(int obj_type)
958 3efd8e31 2022-10-23 thomas switch (obj_type) {
959 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_BLOB:
960 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_COMMIT:
961 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_TREE:
962 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_TAG:
963 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_REF_DELTA:
964 3efd8e31 2022-10-23 thomas case GOT_OBJ_TYPE_OFFSET_DELTA:
965 3efd8e31 2022-10-23 thomas return NULL;
970 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_OBJ_TYPE);
973 3efd8e31 2022-10-23 thomas static const struct got_error *
974 f9542c24 2023-04-14 thomas ensure_all_objects_exist_locally(struct gotd_ref_updates *ref_updates)
976 f9542c24 2023-04-14 thomas const struct got_error *err = NULL;
977 f9542c24 2023-04-14 thomas struct gotd_ref_update *ref_update;
978 f9542c24 2023-04-14 thomas struct got_object *obj;
980 f9542c24 2023-04-14 thomas STAILQ_FOREACH(ref_update, ref_updates, entry) {
981 f9542c24 2023-04-14 thomas err = got_object_open(&obj, repo_write.repo,
982 f9542c24 2023-04-14 thomas &ref_update->new_id);
984 f9542c24 2023-04-14 thomas return err;
985 f9542c24 2023-04-14 thomas got_object_close(obj);
988 f9542c24 2023-04-14 thomas return NULL;
991 f9542c24 2023-04-14 thomas static const struct got_error *
992 d98779cd 2023-01-19 thomas recv_packdata(off_t *outsize, uint32_t *nobj, uint8_t *sha1,
993 d98779cd 2023-01-19 thomas int infd, int outfd)
995 3efd8e31 2022-10-23 thomas const struct got_error *err;
996 d98779cd 2023-01-19 thomas struct repo_write_client *client = &repo_write_client;
997 3efd8e31 2022-10-23 thomas struct got_packfile_hdr hdr;
998 3efd8e31 2022-10-23 thomas size_t have;
999 d98779cd 2023-01-19 thomas uint32_t nhave = 0;
1000 b16893ba 2023-02-24 thomas struct got_hash ctx;
1001 3efd8e31 2022-10-23 thomas uint8_t expected_sha1[SHA1_DIGEST_LENGTH];
1002 3efd8e31 2022-10-23 thomas char hex[SHA1_DIGEST_STRING_LENGTH];
1003 3efd8e31 2022-10-23 thomas BUF *buf = NULL;
1004 3efd8e31 2022-10-23 thomas size_t buf_pos = 0, remain;
1005 3efd8e31 2022-10-23 thomas ssize_t w;
1007 3efd8e31 2022-10-23 thomas *outsize = 0;
1008 d98779cd 2023-01-19 thomas *nobj = 0;
1010 49563dfb 2023-01-28 thomas /* if only deleting references there's nothing to read */
1011 49563dfb 2023-01-28 thomas if (client->nref_updates == client->nref_del)
1012 49563dfb 2023-01-28 thomas return NULL;
1014 b16893ba 2023-02-24 thomas got_hash_init(&ctx, GOT_HASH_SHA1);
1016 3efd8e31 2022-10-23 thomas err = got_poll_read_full(infd, &have, &hdr, sizeof(hdr), sizeof(hdr));
1017 3efd8e31 2022-10-23 thomas if (err)
1018 3efd8e31 2022-10-23 thomas return err;
1019 3efd8e31 2022-10-23 thomas if (have != sizeof(hdr))
1020 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_PACKFILE, "short pack file");
1021 3efd8e31 2022-10-23 thomas *outsize += have;
1023 3efd8e31 2022-10-23 thomas if (hdr.signature != htobe32(GOT_PACKFILE_SIGNATURE))
1024 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_PACKFILE,
1025 3efd8e31 2022-10-23 thomas "bad packfile signature");
1026 3efd8e31 2022-10-23 thomas if (hdr.version != htobe32(GOT_PACKFILE_VERSION))
1027 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_PACKFILE,
1028 3efd8e31 2022-10-23 thomas "bad packfile version");
1030 d98779cd 2023-01-19 thomas *nobj = be32toh(hdr.nobjects);
1031 d98779cd 2023-01-19 thomas if (*nobj == 0) {
1033 d98779cd 2023-01-19 thomas * Clients which are creating new references only
1034 d98779cd 2023-01-19 thomas * will send us an empty pack file.
1036 d98779cd 2023-01-19 thomas if (client->nref_updates > 0 &&
1037 d98779cd 2023-01-19 thomas client->nref_updates == client->nref_new)
1038 d98779cd 2023-01-19 thomas return NULL;
1041 f9542c24 2023-04-14 thomas * Clients which only move existing refs will send us an empty
1042 f9542c24 2023-04-14 thomas * pack file. All referenced objects must exist locally.
1044 f9542c24 2023-04-14 thomas err = ensure_all_objects_exist_locally(&client->ref_updates);
1045 f9542c24 2023-04-14 thomas if (err) {
1046 f9542c24 2023-04-14 thomas if (err->code != GOT_ERR_NO_OBJ)
1047 f9542c24 2023-04-14 thomas return err;
1048 f9542c24 2023-04-14 thomas return got_error_msg(GOT_ERR_BAD_PACKFILE,
1049 f9542c24 2023-04-14 thomas "bad packfile with zero objects");
1052 f9542c24 2023-04-14 thomas client->nref_move = client->nref_updates;
1053 f9542c24 2023-04-14 thomas return NULL;
1056 d98779cd 2023-01-19 thomas log_debug("expecting %d objects", *nobj);
1058 3efd8e31 2022-10-23 thomas err = got_pack_hwrite(outfd, &hdr, sizeof(hdr), &ctx);
1059 3efd8e31 2022-10-23 thomas if (err)
1060 3efd8e31 2022-10-23 thomas return err;
1062 3efd8e31 2022-10-23 thomas err = buf_alloc(&buf, 65536);
1063 3efd8e31 2022-10-23 thomas if (err)
1064 3efd8e31 2022-10-23 thomas return err;
1066 d98779cd 2023-01-19 thomas while (nhave != *nobj) {
1067 3efd8e31 2022-10-23 thomas uint8_t obj_type;
1068 3efd8e31 2022-10-23 thomas uint64_t obj_size;
1070 3efd8e31 2022-10-23 thomas err = copy_object_type_and_size(&obj_type, &obj_size,
1071 3efd8e31 2022-10-23 thomas infd, outfd, outsize, buf, &buf_pos, &ctx);
1072 3efd8e31 2022-10-23 thomas if (err)
1073 3efd8e31 2022-10-23 thomas goto done;
1075 3efd8e31 2022-10-23 thomas err = validate_object_type(obj_type);
1076 3efd8e31 2022-10-23 thomas if (err)
1077 3efd8e31 2022-10-23 thomas goto done;
1079 3efd8e31 2022-10-23 thomas if (obj_type == GOT_OBJ_TYPE_REF_DELTA) {
1080 3efd8e31 2022-10-23 thomas err = copy_ref_delta(infd, outfd, outsize,
1081 3efd8e31 2022-10-23 thomas buf, &buf_pos, &ctx);
1082 3efd8e31 2022-10-23 thomas if (err)
1083 3efd8e31 2022-10-23 thomas goto done;
1084 3efd8e31 2022-10-23 thomas } else if (obj_type == GOT_OBJ_TYPE_OFFSET_DELTA) {
1085 3efd8e31 2022-10-23 thomas err = copy_offset_delta(infd, outfd, outsize,
1086 3efd8e31 2022-10-23 thomas buf, &buf_pos, &ctx);
1087 3efd8e31 2022-10-23 thomas if (err)
1088 3efd8e31 2022-10-23 thomas goto done;
1091 3efd8e31 2022-10-23 thomas err = copy_zstream(infd, outfd, outsize, buf, &buf_pos, &ctx);
1092 3efd8e31 2022-10-23 thomas if (err)
1093 3efd8e31 2022-10-23 thomas goto done;
1095 3efd8e31 2022-10-23 thomas nhave++;
1098 d98779cd 2023-01-19 thomas log_debug("received %u objects", *nobj);
1100 b16893ba 2023-02-24 thomas got_hash_final(&ctx, expected_sha1);
1102 3efd8e31 2022-10-23 thomas remain = buf_len(buf) - buf_pos;
1103 3efd8e31 2022-10-23 thomas if (remain < SHA1_DIGEST_LENGTH) {
1104 3efd8e31 2022-10-23 thomas err = read_more_pack_stream(infd, buf,
1105 3efd8e31 2022-10-23 thomas SHA1_DIGEST_LENGTH - remain);
1106 3efd8e31 2022-10-23 thomas if (err)
1107 3efd8e31 2022-10-23 thomas return err;
1110 3efd8e31 2022-10-23 thomas got_sha1_digest_to_str(expected_sha1, hex, sizeof(hex));
1111 3efd8e31 2022-10-23 thomas log_debug("expect SHA1: %s", hex);
1112 3efd8e31 2022-10-23 thomas got_sha1_digest_to_str(buf_get(buf) + buf_pos, hex, sizeof(hex));
1113 3efd8e31 2022-10-23 thomas log_debug("actual SHA1: %s", hex);
1115 3efd8e31 2022-10-23 thomas if (memcmp(buf_get(buf) + buf_pos, expected_sha1,
1116 3efd8e31 2022-10-23 thomas SHA1_DIGEST_LENGTH) != 0) {
1117 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_PACKFILE_CSUM);
1118 3efd8e31 2022-10-23 thomas goto done;
1121 3efd8e31 2022-10-23 thomas memcpy(sha1, expected_sha1, SHA1_DIGEST_LENGTH);
1123 3efd8e31 2022-10-23 thomas w = write(outfd, expected_sha1, SHA1_DIGEST_LENGTH);
1124 3efd8e31 2022-10-23 thomas if (w == -1) {
1125 3efd8e31 2022-10-23 thomas err = got_error_from_errno("write");
1126 3efd8e31 2022-10-23 thomas goto done;
1128 3efd8e31 2022-10-23 thomas if (w != SHA1_DIGEST_LENGTH) {
1129 3efd8e31 2022-10-23 thomas err = got_error(GOT_ERR_IO);
1130 3efd8e31 2022-10-23 thomas goto done;
1133 3efd8e31 2022-10-23 thomas *outsize += SHA1_DIGEST_LENGTH;
1135 3efd8e31 2022-10-23 thomas if (fsync(outfd) == -1) {
1136 3efd8e31 2022-10-23 thomas err = got_error_from_errno("fsync");
1137 3efd8e31 2022-10-23 thomas goto done;
1139 3efd8e31 2022-10-23 thomas if (lseek(outfd, 0L, SEEK_SET) == -1) {
1140 3efd8e31 2022-10-23 thomas err = got_error_from_errno("lseek");
1141 3efd8e31 2022-10-23 thomas goto done;
1144 3efd8e31 2022-10-23 thomas buf_free(buf);
1145 3efd8e31 2022-10-23 thomas return err;
1148 3efd8e31 2022-10-23 thomas static const struct got_error *
1149 9148c8a7 2023-01-02 thomas report_pack_status(const struct got_error *unpack_err)
1151 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1152 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1153 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_status istatus;
1154 3efd8e31 2022-10-23 thomas struct ibuf *wbuf;
1155 3efd8e31 2022-10-23 thomas struct imsgbuf ibuf;
1156 3efd8e31 2022-10-23 thomas const char *unpack_ok = "unpack ok\n";
1157 3efd8e31 2022-10-23 thomas size_t len;
1159 3efd8e31 2022-10-23 thomas imsg_init(&ibuf, client->fd);
1161 3efd8e31 2022-10-23 thomas if (unpack_err)
1162 3efd8e31 2022-10-23 thomas istatus.reason_len = strlen(unpack_err->msg);
1164 3efd8e31 2022-10-23 thomas istatus.reason_len = strlen(unpack_ok);
1166 3efd8e31 2022-10-23 thomas len = sizeof(istatus) + istatus.reason_len;
1167 3efd8e31 2022-10-23 thomas wbuf = imsg_create(&ibuf, GOTD_IMSG_PACKFILE_STATUS, PROC_REPO_WRITE,
1168 3efd8e31 2022-10-23 thomas repo_write.pid, len);
1169 3efd8e31 2022-10-23 thomas if (wbuf == NULL) {
1170 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_create PACKFILE_STATUS");
1171 3efd8e31 2022-10-23 thomas goto done;
1174 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, &istatus, sizeof(istatus)) == -1) {
1175 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_add PACKFILE_STATUS");
1176 3efd8e31 2022-10-23 thomas goto done;
1179 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, err ? err->msg : unpack_ok,
1180 3efd8e31 2022-10-23 thomas istatus.reason_len) == -1) {
1181 3efd8e31 2022-10-23 thomas err = got_error_from_errno("imsg_add PACKFILE_STATUS");
1182 3efd8e31 2022-10-23 thomas goto done;
1185 3efd8e31 2022-10-23 thomas wbuf->fd = -1;
1186 3efd8e31 2022-10-23 thomas imsg_close(&ibuf, wbuf);
1188 3efd8e31 2022-10-23 thomas err = gotd_imsg_flush(&ibuf);
1190 3efd8e31 2022-10-23 thomas imsg_clear(&ibuf);
1191 3efd8e31 2022-10-23 thomas return err;
1194 3efd8e31 2022-10-23 thomas static const struct got_error *
1195 d98779cd 2023-01-19 thomas recv_packfile(int *have_packfile, struct imsg *imsg)
1197 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL, *unpack_err;
1198 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1199 3efd8e31 2022-10-23 thomas struct gotd_imsg_recv_packfile ireq;
1200 3efd8e31 2022-10-23 thomas FILE *tempfiles[3] = { NULL, NULL, NULL };
1201 3efd8e31 2022-10-23 thomas struct repo_tempfile {
1203 3efd8e31 2022-10-23 thomas int idx;
1204 3efd8e31 2022-10-23 thomas } repo_tempfiles[3] = { { - 1, - 1 }, { - 1, - 1 }, { - 1, - 1 }, };
1206 3efd8e31 2022-10-23 thomas size_t datalen;
1207 3efd8e31 2022-10-23 thomas struct imsgbuf ibuf;
1208 3efd8e31 2022-10-23 thomas struct got_ratelimit rl;
1209 3efd8e31 2022-10-23 thomas struct got_pack *pack = NULL;
1210 3efd8e31 2022-10-23 thomas off_t pack_filesize = 0;
1211 d98779cd 2023-01-19 thomas uint32_t nobj = 0;
1213 3efd8e31 2022-10-23 thomas log_debug("packfile request received");
1215 d98779cd 2023-01-19 thomas *have_packfile = 0;
1216 3efd8e31 2022-10-23 thomas got_ratelimit_init(&rl, 2, 0);
1218 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1219 3efd8e31 2022-10-23 thomas if (datalen != sizeof(ireq))
1220 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1221 3efd8e31 2022-10-23 thomas memcpy(&ireq, imsg->data, sizeof(ireq));
1223 9148c8a7 2023-01-02 thomas if (client->pack_pipe == -1 || client->packidx_fd == -1)
1224 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
1226 9148c8a7 2023-01-02 thomas imsg_init(&ibuf, client->fd);
1228 3efd8e31 2022-10-23 thomas if (imsg->fd == -1)
1229 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
1231 9148c8a7 2023-01-02 thomas pack = &client->pack;
1232 3efd8e31 2022-10-23 thomas memset(pack, 0, sizeof(*pack));
1233 3efd8e31 2022-10-23 thomas pack->fd = imsg->fd;
1234 3efd8e31 2022-10-23 thomas err = got_delta_cache_alloc(&pack->delta_cache);
1235 3efd8e31 2022-10-23 thomas if (err)
1236 3efd8e31 2022-10-23 thomas return err;
1238 3efd8e31 2022-10-23 thomas for (i = 0; i < nitems(repo_tempfiles); i++) {
1239 3efd8e31 2022-10-23 thomas struct repo_tempfile *t = &repo_tempfiles[i];
1240 3efd8e31 2022-10-23 thomas err = got_repo_temp_fds_get(&t->fd, &t->idx, repo_write.repo);
1241 3efd8e31 2022-10-23 thomas if (err)
1242 3efd8e31 2022-10-23 thomas goto done;
1245 3efd8e31 2022-10-23 thomas for (i = 0; i < nitems(tempfiles); i++) {
1247 3efd8e31 2022-10-23 thomas FILE *f;
1249 da2c57e4 2023-02-03 thomas fd = dup(repo_tempfiles[i].fd);
1250 3efd8e31 2022-10-23 thomas if (fd == -1) {
1251 3efd8e31 2022-10-23 thomas err = got_error_from_errno("dup");
1252 3efd8e31 2022-10-23 thomas goto done;
1254 3efd8e31 2022-10-23 thomas f = fdopen(fd, "w+");
1255 3efd8e31 2022-10-23 thomas if (f == NULL) {
1256 da2c57e4 2023-02-03 thomas err = got_error_from_errno("fdopen");
1257 3efd8e31 2022-10-23 thomas close(fd);
1258 3efd8e31 2022-10-23 thomas goto done;
1260 3efd8e31 2022-10-23 thomas tempfiles[i] = f;
1263 3efd8e31 2022-10-23 thomas err = gotd_imsg_flush(&ibuf);
1264 3efd8e31 2022-10-23 thomas if (err)
1265 3efd8e31 2022-10-23 thomas goto done;
1267 3efd8e31 2022-10-23 thomas log_debug("receiving pack data");
1268 d98779cd 2023-01-19 thomas unpack_err = recv_packdata(&pack_filesize, &nobj,
1269 d98779cd 2023-01-19 thomas client->pack_sha1, client->pack_pipe, pack->fd);
1270 3efd8e31 2022-10-23 thomas if (ireq.report_status) {
1271 9148c8a7 2023-01-02 thomas err = report_pack_status(unpack_err);
1272 3efd8e31 2022-10-23 thomas if (err) {
1273 3efd8e31 2022-10-23 thomas /* Git clients hang up after sending the pack file. */
1274 3efd8e31 2022-10-23 thomas if (err->code == GOT_ERR_EOF)
1275 3efd8e31 2022-10-23 thomas err = NULL;
1278 3efd8e31 2022-10-23 thomas if (unpack_err)
1279 3efd8e31 2022-10-23 thomas err = unpack_err;
1280 3efd8e31 2022-10-23 thomas if (err)
1281 3efd8e31 2022-10-23 thomas goto done;
1283 3efd8e31 2022-10-23 thomas log_debug("pack data received");
1286 d98779cd 2023-01-19 thomas * Clients which are creating new references only will
1287 d98779cd 2023-01-19 thomas * send us an empty pack file.
1289 d98779cd 2023-01-19 thomas if (nobj == 0 &&
1290 d98779cd 2023-01-19 thomas pack_filesize == sizeof(struct got_packfile_hdr) &&
1291 d98779cd 2023-01-19 thomas client->nref_updates > 0 &&
1292 d98779cd 2023-01-19 thomas client->nref_updates == client->nref_new)
1293 d98779cd 2023-01-19 thomas goto done;
1296 49563dfb 2023-01-28 thomas * Clients which are deleting references only will send
1297 49563dfb 2023-01-28 thomas * no pack file.
1299 49563dfb 2023-01-28 thomas if (nobj == 0 &&
1300 49563dfb 2023-01-28 thomas client->nref_del > 0 &&
1301 49563dfb 2023-01-28 thomas client->nref_updates == client->nref_del)
1302 f9542c24 2023-04-14 thomas goto done;
1305 f9542c24 2023-04-14 thomas * Clients which only move existing refs will send us an empty
1306 f9542c24 2023-04-14 thomas * pack file. All referenced objects must exist locally.
1308 f9542c24 2023-04-14 thomas if (nobj == 0 &&
1309 f9542c24 2023-04-14 thomas pack_filesize == sizeof(struct got_packfile_hdr) &&
1310 f9542c24 2023-04-14 thomas client->nref_move > 0 &&
1311 f9542c24 2023-04-14 thomas client->nref_updates == client->nref_move)
1312 49563dfb 2023-01-28 thomas goto done;
1314 3efd8e31 2022-10-23 thomas pack->filesize = pack_filesize;
1315 d98779cd 2023-01-19 thomas *have_packfile = 1;
1317 66e6097f 2022-10-27 thomas log_debug("begin indexing pack (%lld bytes in size)",
1318 66e6097f 2022-10-27 thomas (long long)pack->filesize);
1319 9148c8a7 2023-01-02 thomas err = got_pack_index(pack, client->packidx_fd,
1320 9148c8a7 2023-01-02 thomas tempfiles[0], tempfiles[1], tempfiles[2], client->pack_sha1,
1321 3efd8e31 2022-10-23 thomas pack_index_progress, NULL, &rl);
1322 3efd8e31 2022-10-23 thomas if (err)
1323 3efd8e31 2022-10-23 thomas goto done;
1324 3efd8e31 2022-10-23 thomas log_debug("done indexing pack");
1326 9148c8a7 2023-01-02 thomas if (fsync(client->packidx_fd) == -1) {
1327 3efd8e31 2022-10-23 thomas err = got_error_from_errno("fsync");
1328 3efd8e31 2022-10-23 thomas goto done;
1330 9148c8a7 2023-01-02 thomas if (lseek(client->packidx_fd, 0L, SEEK_SET) == -1)
1331 3efd8e31 2022-10-23 thomas err = got_error_from_errno("lseek");
1333 9148c8a7 2023-01-02 thomas if (close(client->pack_pipe) == -1 && err == NULL)
1334 3efd8e31 2022-10-23 thomas err = got_error_from_errno("close");
1335 9148c8a7 2023-01-02 thomas client->pack_pipe = -1;
1336 3efd8e31 2022-10-23 thomas for (i = 0; i < nitems(repo_tempfiles); i++) {
1337 3efd8e31 2022-10-23 thomas struct repo_tempfile *t = &repo_tempfiles[i];
1338 3efd8e31 2022-10-23 thomas if (t->idx != -1)
1339 3efd8e31 2022-10-23 thomas got_repo_temp_fds_put(t->idx, repo_write.repo);
1341 3efd8e31 2022-10-23 thomas for (i = 0; i < nitems(tempfiles); i++) {
1342 3efd8e31 2022-10-23 thomas if (tempfiles[i] && fclose(tempfiles[i]) == EOF && err == NULL)
1343 3efd8e31 2022-10-23 thomas err = got_error_from_errno("fclose");
1345 3efd8e31 2022-10-23 thomas if (err)
1346 3efd8e31 2022-10-23 thomas got_pack_close(pack);
1347 3efd8e31 2022-10-23 thomas imsg_clear(&ibuf);
1348 3efd8e31 2022-10-23 thomas return err;
1351 3efd8e31 2022-10-23 thomas static const struct got_error *
1352 9148c8a7 2023-01-02 thomas verify_packfile(void)
1354 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL, *close_err;
1355 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1356 3efd8e31 2022-10-23 thomas struct gotd_ref_update *ref_update;
1357 3efd8e31 2022-10-23 thomas struct got_packidx *packidx = NULL;
1358 3efd8e31 2022-10-23 thomas struct stat sb;
1359 3efd8e31 2022-10-23 thomas char *id_str = NULL;
1360 6d7eb4f7 2023-04-04 thomas struct got_object *obj = NULL;
1361 6d7eb4f7 2023-04-04 thomas struct got_pathlist_entry *pe;
1362 6d7eb4f7 2023-04-04 thomas char hex[SHA1_DIGEST_STRING_LENGTH];
1364 3efd8e31 2022-10-23 thomas if (STAILQ_EMPTY(&client->ref_updates)) {
1365 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_REQUEST,
1366 3efd8e31 2022-10-23 thomas "cannot verify pack file without any ref-updates");
1369 3efd8e31 2022-10-23 thomas if (client->pack.fd == -1) {
1370 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_REQUEST,
1371 3efd8e31 2022-10-23 thomas "invalid pack file handle during pack verification");
1373 3efd8e31 2022-10-23 thomas if (client->packidx_fd == -1) {
1374 3efd8e31 2022-10-23 thomas return got_error_msg(GOT_ERR_BAD_REQUEST,
1375 3efd8e31 2022-10-23 thomas "invalid pack index handle during pack verification");
1378 3efd8e31 2022-10-23 thomas if (fstat(client->packidx_fd, &sb) == -1)
1379 3efd8e31 2022-10-23 thomas return got_error_from_errno("pack index fstat");
1381 3efd8e31 2022-10-23 thomas packidx = malloc(sizeof(*packidx));
1382 3efd8e31 2022-10-23 thomas memset(packidx, 0, sizeof(*packidx));
1383 3efd8e31 2022-10-23 thomas packidx->fd = client->packidx_fd;
1384 3efd8e31 2022-10-23 thomas client->packidx_fd = -1;
1385 3efd8e31 2022-10-23 thomas packidx->len = sb.st_size;
1387 3efd8e31 2022-10-23 thomas err = got_packidx_init_hdr(packidx, 1, client->pack.filesize);
1388 3efd8e31 2022-10-23 thomas if (err)
1389 3efd8e31 2022-10-23 thomas return err;
1391 3efd8e31 2022-10-23 thomas STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1392 49563dfb 2023-01-28 thomas if (ref_update->delete_ref)
1393 49563dfb 2023-01-28 thomas continue;
1395 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_tag_namespaces, entry) {
1396 6d7eb4f7 2023-04-04 thomas err = protect_tag_namespace(pe->path, &client->pack,
1397 6d7eb4f7 2023-04-04 thomas packidx, ref_update);
1398 6d7eb4f7 2023-04-04 thomas if (err)
1399 6d7eb4f7 2023-04-04 thomas goto done;
1403 6d7eb4f7 2023-04-04 thomas * Objects which already exist in our repository need
1404 6d7eb4f7 2023-04-04 thomas * not be present in the pack file.
1406 6d7eb4f7 2023-04-04 thomas err = got_object_open(&obj, repo_write.repo,
1407 6d7eb4f7 2023-04-04 thomas &ref_update->new_id);
1408 6d7eb4f7 2023-04-04 thomas if (err && err->code != GOT_ERR_NO_OBJ)
1409 3efd8e31 2022-10-23 thomas goto done;
1410 6d7eb4f7 2023-04-04 thomas err = NULL;
1411 6d7eb4f7 2023-04-04 thomas if (obj) {
1412 6d7eb4f7 2023-04-04 thomas got_object_close(obj);
1413 6d7eb4f7 2023-04-04 thomas obj = NULL;
1414 6d7eb4f7 2023-04-04 thomas } else {
1415 6d7eb4f7 2023-04-04 thomas int idx = got_packidx_get_object_idx(packidx,
1416 6d7eb4f7 2023-04-04 thomas &ref_update->new_id);
1417 6d7eb4f7 2023-04-04 thomas if (idx == -1) {
1418 6d7eb4f7 2023-04-04 thomas got_sha1_digest_to_str(ref_update->new_id.sha1,
1419 6d7eb4f7 2023-04-04 thomas hex, sizeof(hex));
1420 6d7eb4f7 2023-04-04 thomas err = got_error_fmt(GOT_ERR_BAD_PACKFILE,
1421 6d7eb4f7 2023-04-04 thomas "object %s is missing from pack file",
1423 6d7eb4f7 2023-04-04 thomas goto done;
1427 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_branch_namespaces,
1428 6d7eb4f7 2023-04-04 thomas entry) {
1429 6d7eb4f7 2023-04-04 thomas err = protect_branch_namespace(pe->path,
1430 6d7eb4f7 2023-04-04 thomas &client->pack, packidx, ref_update);
1431 6d7eb4f7 2023-04-04 thomas if (err)
1432 6d7eb4f7 2023-04-04 thomas goto done;
1434 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_branches, entry) {
1435 6d7eb4f7 2023-04-04 thomas err = protect_branch(pe->path, &client->pack,
1436 6d7eb4f7 2023-04-04 thomas packidx, ref_update);
1437 6d7eb4f7 2023-04-04 thomas if (err)
1438 6d7eb4f7 2023-04-04 thomas goto done;
1443 3efd8e31 2022-10-23 thomas close_err = got_packidx_close(packidx);
1444 3efd8e31 2022-10-23 thomas if (close_err && err == NULL)
1445 3efd8e31 2022-10-23 thomas err = close_err;
1446 3efd8e31 2022-10-23 thomas free(id_str);
1447 6d7eb4f7 2023-04-04 thomas if (obj)
1448 6d7eb4f7 2023-04-04 thomas got_object_close(obj);
1449 3efd8e31 2022-10-23 thomas return err;
1452 3efd8e31 2022-10-23 thomas static const struct got_error *
1453 6d7eb4f7 2023-04-04 thomas protect_refs_from_deletion(void)
1455 6d7eb4f7 2023-04-04 thomas const struct got_error *err = NULL;
1456 6d7eb4f7 2023-04-04 thomas struct repo_write_client *client = &repo_write_client;
1457 6d7eb4f7 2023-04-04 thomas struct gotd_ref_update *ref_update;
1458 6d7eb4f7 2023-04-04 thomas struct got_pathlist_entry *pe;
1459 6d7eb4f7 2023-04-04 thomas const char *refname;
1461 6d7eb4f7 2023-04-04 thomas STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1462 6d7eb4f7 2023-04-04 thomas if (!ref_update->delete_ref)
1463 6d7eb4f7 2023-04-04 thomas continue;
1465 6d7eb4f7 2023-04-04 thomas refname = got_ref_get_name(ref_update->ref);
1467 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_tag_namespaces, entry) {
1468 6d7eb4f7 2023-04-04 thomas err = protect_ref_namespace(refname, pe->path);
1469 6d7eb4f7 2023-04-04 thomas if (err)
1470 6d7eb4f7 2023-04-04 thomas return err;
1473 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_branch_namespaces,
1474 6d7eb4f7 2023-04-04 thomas entry) {
1475 6d7eb4f7 2023-04-04 thomas err = protect_ref_namespace(refname, pe->path);
1476 6d7eb4f7 2023-04-04 thomas if (err)
1477 6d7eb4f7 2023-04-04 thomas return err;
1480 6d7eb4f7 2023-04-04 thomas TAILQ_FOREACH(pe, repo_write.protected_branches, entry) {
1481 6d7eb4f7 2023-04-04 thomas if (strcmp(refname, pe->path) == 0) {
1482 6d7eb4f7 2023-04-04 thomas return got_error_fmt(GOT_ERR_REF_PROTECTED,
1483 6d7eb4f7 2023-04-04 thomas "%s", refname);
1488 6d7eb4f7 2023-04-04 thomas return NULL;
1491 6d7eb4f7 2023-04-04 thomas static const struct got_error *
1492 9148c8a7 2023-01-02 thomas install_packfile(struct gotd_imsgev *iev)
1494 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1495 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_install inst;
1496 3efd8e31 2022-10-23 thomas int ret;
1498 3efd8e31 2022-10-23 thomas memset(&inst, 0, sizeof(inst));
1499 3efd8e31 2022-10-23 thomas inst.client_id = client->id;
1500 3efd8e31 2022-10-23 thomas memcpy(inst.pack_sha1, client->pack_sha1, SHA1_DIGEST_LENGTH);
1502 3efd8e31 2022-10-23 thomas ret = gotd_imsg_compose_event(iev, GOTD_IMSG_PACKFILE_INSTALL,
1503 3efd8e31 2022-10-23 thomas PROC_REPO_WRITE, -1, &inst, sizeof(inst));
1504 3efd8e31 2022-10-23 thomas if (ret == -1)
1505 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_compose PACKFILE_INSTALL");
1507 3efd8e31 2022-10-23 thomas return NULL;
1510 3efd8e31 2022-10-23 thomas static const struct got_error *
1511 9148c8a7 2023-01-02 thomas send_ref_updates_start(int nref_updates, struct gotd_imsgev *iev)
1513 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1514 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_updates_start istart;
1515 3efd8e31 2022-10-23 thomas int ret;
1517 3efd8e31 2022-10-23 thomas memset(&istart, 0, sizeof(istart));
1518 3efd8e31 2022-10-23 thomas istart.nref_updates = nref_updates;
1519 3efd8e31 2022-10-23 thomas istart.client_id = client->id;
1521 3efd8e31 2022-10-23 thomas ret = gotd_imsg_compose_event(iev, GOTD_IMSG_REF_UPDATES_START,
1522 3efd8e31 2022-10-23 thomas PROC_REPO_WRITE, -1, &istart, sizeof(istart));
1523 3efd8e31 2022-10-23 thomas if (ret == -1)
1524 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_compose REF_UPDATES_START");
1526 3efd8e31 2022-10-23 thomas return NULL;
1530 3efd8e31 2022-10-23 thomas static const struct got_error *
1531 9148c8a7 2023-01-02 thomas send_ref_update(struct gotd_ref_update *ref_update, struct gotd_imsgev *iev)
1533 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1534 3efd8e31 2022-10-23 thomas struct gotd_imsg_ref_update iref;
1535 3efd8e31 2022-10-23 thomas const char *refname = got_ref_get_name(ref_update->ref);
1536 3efd8e31 2022-10-23 thomas struct ibuf *wbuf;
1537 3efd8e31 2022-10-23 thomas size_t len;
1539 3efd8e31 2022-10-23 thomas memset(&iref, 0, sizeof(iref));
1540 3efd8e31 2022-10-23 thomas memcpy(iref.old_id, ref_update->old_id.sha1, SHA1_DIGEST_LENGTH);
1541 3efd8e31 2022-10-23 thomas memcpy(iref.new_id, ref_update->new_id.sha1, SHA1_DIGEST_LENGTH);
1542 3efd8e31 2022-10-23 thomas iref.ref_is_new = ref_update->ref_is_new;
1543 49563dfb 2023-01-28 thomas iref.delete_ref = ref_update->delete_ref;
1544 3efd8e31 2022-10-23 thomas iref.client_id = client->id;
1545 3efd8e31 2022-10-23 thomas iref.name_len = strlen(refname);
1547 3efd8e31 2022-10-23 thomas len = sizeof(iref) + iref.name_len;
1548 3efd8e31 2022-10-23 thomas wbuf = imsg_create(&iev->ibuf, GOTD_IMSG_REF_UPDATE, PROC_REPO_WRITE,
1549 3efd8e31 2022-10-23 thomas repo_write.pid, len);
1550 3efd8e31 2022-10-23 thomas if (wbuf == NULL)
1551 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_create REF_UPDATE");
1553 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, &iref, sizeof(iref)) == -1)
1554 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add REF_UPDATE");
1555 3efd8e31 2022-10-23 thomas if (imsg_add(wbuf, refname, iref.name_len) == -1)
1556 3efd8e31 2022-10-23 thomas return got_error_from_errno("imsg_add REF_UPDATE");
1558 3efd8e31 2022-10-23 thomas wbuf->fd = -1;
1559 3efd8e31 2022-10-23 thomas imsg_close(&iev->ibuf, wbuf);
1561 3efd8e31 2022-10-23 thomas gotd_imsg_event_add(iev);
1562 3efd8e31 2022-10-23 thomas return NULL;
1565 3efd8e31 2022-10-23 thomas static const struct got_error *
1566 9148c8a7 2023-01-02 thomas update_refs(struct gotd_imsgev *iev)
1568 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1569 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1570 3efd8e31 2022-10-23 thomas struct gotd_ref_update *ref_update;
1572 9148c8a7 2023-01-02 thomas err = send_ref_updates_start(client->nref_updates, iev);
1573 3efd8e31 2022-10-23 thomas if (err)
1574 3efd8e31 2022-10-23 thomas return err;
1576 3efd8e31 2022-10-23 thomas STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1577 9148c8a7 2023-01-02 thomas err = send_ref_update(ref_update, iev);
1578 3efd8e31 2022-10-23 thomas if (err)
1579 3efd8e31 2022-10-23 thomas goto done;
1582 3efd8e31 2022-10-23 thomas return err;
1585 3efd8e31 2022-10-23 thomas static const struct got_error *
1586 9148c8a7 2023-01-02 thomas receive_pack_pipe(struct imsg *imsg, struct gotd_imsgev *iev)
1588 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1589 3efd8e31 2022-10-23 thomas struct gotd_imsg_packfile_pipe ireq;
1590 3efd8e31 2022-10-23 thomas size_t datalen;
1592 ff553ea7 2023-04-22 thomas log_debug("receiving pack pipe descriptor");
1594 3efd8e31 2022-10-23 thomas if (imsg->fd == -1)
1595 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
1597 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1598 3efd8e31 2022-10-23 thomas if (datalen != sizeof(ireq))
1599 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1600 3efd8e31 2022-10-23 thomas memcpy(&ireq, imsg->data, sizeof(ireq));
1602 9148c8a7 2023-01-02 thomas if (client->pack_pipe != -1)
1603 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_MSG);
1605 9148c8a7 2023-01-02 thomas client->pack_pipe = imsg->fd;
1606 3efd8e31 2022-10-23 thomas return NULL;
1609 3efd8e31 2022-10-23 thomas static const struct got_error *
1610 9148c8a7 2023-01-02 thomas receive_pack_idx(struct imsg *imsg, struct gotd_imsgev *iev)
1612 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1613 3efd8e31 2022-10-23 thomas struct gotd_imsg_packidx_file ireq;
1614 3efd8e31 2022-10-23 thomas size_t datalen;
1616 ff553ea7 2023-04-22 thomas log_debug("receiving pack index output file");
1618 3efd8e31 2022-10-23 thomas if (imsg->fd == -1)
1619 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
1621 3efd8e31 2022-10-23 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1622 3efd8e31 2022-10-23 thomas if (datalen != sizeof(ireq))
1623 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1624 3efd8e31 2022-10-23 thomas memcpy(&ireq, imsg->data, sizeof(ireq));
1626 9148c8a7 2023-01-02 thomas if (client->packidx_fd != -1)
1627 3efd8e31 2022-10-23 thomas return got_error(GOT_ERR_PRIVSEP_MSG);
1629 9148c8a7 2023-01-02 thomas client->packidx_fd = imsg->fd;
1630 3efd8e31 2022-10-23 thomas return NULL;
1633 3efd8e31 2022-10-23 thomas static void
1634 62ee7d94 2023-01-10 thomas repo_write_dispatch_session(int fd, short event, void *arg)
1636 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1637 3efd8e31 2022-10-23 thomas struct gotd_imsgev *iev = arg;
1638 3efd8e31 2022-10-23 thomas struct imsgbuf *ibuf = &iev->ibuf;
1639 3efd8e31 2022-10-23 thomas struct imsg imsg;
1640 9148c8a7 2023-01-02 thomas struct repo_write_client *client = &repo_write_client;
1641 3efd8e31 2022-10-23 thomas ssize_t n;
1642 d98779cd 2023-01-19 thomas int shut = 0, have_packfile = 0;
1644 3efd8e31 2022-10-23 thomas if (event & EV_READ) {
1645 3efd8e31 2022-10-23 thomas if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1646 3efd8e31 2022-10-23 thomas fatal("imsg_read error");
1647 3efd8e31 2022-10-23 thomas if (n == 0) /* Connection closed. */
1648 3efd8e31 2022-10-23 thomas shut = 1;
1651 3efd8e31 2022-10-23 thomas if (event & EV_WRITE) {
1652 3efd8e31 2022-10-23 thomas n = msgbuf_write(&ibuf->w);
1653 3efd8e31 2022-10-23 thomas if (n == -1 && errno != EAGAIN)
1654 3efd8e31 2022-10-23 thomas fatal("msgbuf_write");
1655 3efd8e31 2022-10-23 thomas if (n == 0) /* Connection closed. */
1656 3efd8e31 2022-10-23 thomas shut = 1;
1659 3efd8e31 2022-10-23 thomas for (;;) {
1660 3efd8e31 2022-10-23 thomas if ((n = imsg_get(ibuf, &imsg)) == -1)
1661 3efd8e31 2022-10-23 thomas fatal("%s: imsg_get error", __func__);
1662 3efd8e31 2022-10-23 thomas if (n == 0) /* No more messages. */
1665 9148c8a7 2023-01-02 thomas if (imsg.hdr.type != GOTD_IMSG_LIST_REFS_INTERNAL &&
1666 9148c8a7 2023-01-02 thomas client->id == 0) {
1667 9148c8a7 2023-01-02 thomas err = got_error(GOT_ERR_PRIVSEP_MSG);
1671 3efd8e31 2022-10-23 thomas switch (imsg.hdr.type) {
1672 3efd8e31 2022-10-23 thomas case GOTD_IMSG_LIST_REFS_INTERNAL:
1673 9148c8a7 2023-01-02 thomas err = list_refs(&imsg);
1674 3efd8e31 2022-10-23 thomas if (err)
1675 42f290d4 2023-03-05 thomas log_warnx("ls-refs: %s", err->msg);
1677 3efd8e31 2022-10-23 thomas case GOTD_IMSG_REF_UPDATE:
1678 9148c8a7 2023-01-02 thomas err = recv_ref_update(&imsg);
1679 3efd8e31 2022-10-23 thomas if (err)
1680 42f290d4 2023-03-05 thomas log_warnx("ref-update: %s", err->msg);
1682 3efd8e31 2022-10-23 thomas case GOTD_IMSG_PACKFILE_PIPE:
1683 9148c8a7 2023-01-02 thomas err = receive_pack_pipe(&imsg, iev);
1684 3efd8e31 2022-10-23 thomas if (err) {
1685 42f290d4 2023-03-05 thomas log_warnx("receiving pack pipe: %s", err->msg);
1689 3efd8e31 2022-10-23 thomas case GOTD_IMSG_PACKIDX_FILE:
1690 9148c8a7 2023-01-02 thomas err = receive_pack_idx(&imsg, iev);
1691 3efd8e31 2022-10-23 thomas if (err) {
1692 42f290d4 2023-03-05 thomas log_warnx("receiving pack index: %s",
1693 42f290d4 2023-03-05 thomas err->msg);
1697 3efd8e31 2022-10-23 thomas case GOTD_IMSG_RECV_PACKFILE:
1698 6d7eb4f7 2023-04-04 thomas err = protect_refs_from_deletion();
1699 6d7eb4f7 2023-04-04 thomas if (err)
1701 d98779cd 2023-01-19 thomas err = recv_packfile(&have_packfile, &imsg);
1702 3efd8e31 2022-10-23 thomas if (err) {
1703 42f290d4 2023-03-05 thomas log_warnx("receive packfile: %s", err->msg);
1706 d98779cd 2023-01-19 thomas if (have_packfile) {
1707 d98779cd 2023-01-19 thomas err = verify_packfile();
1708 d98779cd 2023-01-19 thomas if (err) {
1709 42f290d4 2023-03-05 thomas log_warnx("verify packfile: %s",
1710 42f290d4 2023-03-05 thomas err->msg);
1713 d98779cd 2023-01-19 thomas err = install_packfile(iev);
1714 d98779cd 2023-01-19 thomas if (err) {
1715 42f290d4 2023-03-05 thomas log_warnx("install packfile: %s",
1716 42f290d4 2023-03-05 thomas err->msg);
1720 9148c8a7 2023-01-02 thomas err = update_refs(iev);
1721 3efd8e31 2022-10-23 thomas if (err) {
1722 42f290d4 2023-03-05 thomas log_warnx("update refs: %s", err->msg);
1725 62ee7d94 2023-01-10 thomas default:
1726 42f290d4 2023-03-05 thomas log_debug("unexpected imsg %d", imsg.hdr.type);
1730 62ee7d94 2023-01-10 thomas imsg_free(&imsg);
1733 62ee7d94 2023-01-10 thomas if (!shut && check_cancelled(NULL) == NULL) {
1734 62ee7d94 2023-01-10 thomas if (err &&
1735 62ee7d94 2023-01-10 thomas gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
1736 62ee7d94 2023-01-10 thomas client->id, err) == -1) {
1737 62ee7d94 2023-01-10 thomas log_warnx("could not send error to parent: %s",
1738 62ee7d94 2023-01-10 thomas err->msg);
1740 62ee7d94 2023-01-10 thomas gotd_imsg_event_add(iev);
1741 62ee7d94 2023-01-10 thomas } else {
1742 62ee7d94 2023-01-10 thomas /* This pipe is dead. Remove its event handler */
1743 62ee7d94 2023-01-10 thomas event_del(&iev->ev);
1744 62ee7d94 2023-01-10 thomas event_loopexit(NULL);
1748 62ee7d94 2023-01-10 thomas static const struct got_error *
1749 62ee7d94 2023-01-10 thomas recv_connect(struct imsg *imsg)
1751 62ee7d94 2023-01-10 thomas struct gotd_imsgev *iev = &repo_write.session_iev;
1752 62ee7d94 2023-01-10 thomas size_t datalen;
1754 62ee7d94 2023-01-10 thomas datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1755 62ee7d94 2023-01-10 thomas if (datalen != 0)
1756 62ee7d94 2023-01-10 thomas return got_error(GOT_ERR_PRIVSEP_LEN);
1757 62ee7d94 2023-01-10 thomas if (imsg->fd == -1)
1758 62ee7d94 2023-01-10 thomas return got_error(GOT_ERR_PRIVSEP_NO_FD);
1760 62ee7d94 2023-01-10 thomas if (repo_write.session_fd != -1)
1761 62ee7d94 2023-01-10 thomas return got_error(GOT_ERR_PRIVSEP_MSG);
1763 62ee7d94 2023-01-10 thomas repo_write.session_fd = imsg->fd;
1765 62ee7d94 2023-01-10 thomas imsg_init(&iev->ibuf, repo_write.session_fd);
1766 62ee7d94 2023-01-10 thomas iev->handler = repo_write_dispatch_session;
1767 62ee7d94 2023-01-10 thomas iev->events = EV_READ;
1768 62ee7d94 2023-01-10 thomas iev->handler_arg = NULL;
1769 62ee7d94 2023-01-10 thomas event_set(&iev->ev, iev->ibuf.fd, EV_READ,
1770 62ee7d94 2023-01-10 thomas repo_write_dispatch_session, iev);
1771 62ee7d94 2023-01-10 thomas gotd_imsg_event_add(iev);
1773 62ee7d94 2023-01-10 thomas return NULL;
1776 62ee7d94 2023-01-10 thomas static void
1777 62ee7d94 2023-01-10 thomas repo_write_dispatch(int fd, short event, void *arg)
1779 62ee7d94 2023-01-10 thomas const struct got_error *err = NULL;
1780 62ee7d94 2023-01-10 thomas struct gotd_imsgev *iev = arg;
1781 62ee7d94 2023-01-10 thomas struct imsgbuf *ibuf = &iev->ibuf;
1782 62ee7d94 2023-01-10 thomas struct imsg imsg;
1783 62ee7d94 2023-01-10 thomas ssize_t n;
1784 62ee7d94 2023-01-10 thomas int shut = 0;
1785 62ee7d94 2023-01-10 thomas struct repo_write_client *client = &repo_write_client;
1787 62ee7d94 2023-01-10 thomas if (event & EV_READ) {
1788 62ee7d94 2023-01-10 thomas if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
1789 62ee7d94 2023-01-10 thomas fatal("imsg_read error");
1790 62ee7d94 2023-01-10 thomas if (n == 0) /* Connection closed. */
1791 9148c8a7 2023-01-02 thomas shut = 1;
1794 62ee7d94 2023-01-10 thomas if (event & EV_WRITE) {
1795 62ee7d94 2023-01-10 thomas n = msgbuf_write(&ibuf->w);
1796 62ee7d94 2023-01-10 thomas if (n == -1 && errno != EAGAIN)
1797 62ee7d94 2023-01-10 thomas fatal("msgbuf_write");
1798 62ee7d94 2023-01-10 thomas if (n == 0) /* Connection closed. */
1799 62ee7d94 2023-01-10 thomas shut = 1;
1802 62ee7d94 2023-01-10 thomas while (err == NULL && check_cancelled(NULL) == NULL) {
1803 62ee7d94 2023-01-10 thomas if ((n = imsg_get(ibuf, &imsg)) == -1)
1804 62ee7d94 2023-01-10 thomas fatal("%s: imsg_get", __func__);
1805 62ee7d94 2023-01-10 thomas if (n == 0) /* No more messages. */
1808 62ee7d94 2023-01-10 thomas switch (imsg.hdr.type) {
1809 62ee7d94 2023-01-10 thomas case GOTD_IMSG_CONNECT_REPO_CHILD:
1810 62ee7d94 2023-01-10 thomas err = recv_connect(&imsg);
1812 3efd8e31 2022-10-23 thomas default:
1813 42f290d4 2023-03-05 thomas log_debug("unexpected imsg %d", imsg.hdr.type);
1817 3efd8e31 2022-10-23 thomas imsg_free(&imsg);
1820 3efd8e31 2022-10-23 thomas if (!shut && check_cancelled(NULL) == NULL) {
1821 3efd8e31 2022-10-23 thomas if (err &&
1822 3efd8e31 2022-10-23 thomas gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
1823 9148c8a7 2023-01-02 thomas client->id, err) == -1) {
1824 3efd8e31 2022-10-23 thomas log_warnx("could not send error to parent: %s",
1825 3efd8e31 2022-10-23 thomas err->msg);
1827 3efd8e31 2022-10-23 thomas gotd_imsg_event_add(iev);
1828 3efd8e31 2022-10-23 thomas } else {
1829 3efd8e31 2022-10-23 thomas /* This pipe is dead. Remove its event handler */
1830 3efd8e31 2022-10-23 thomas event_del(&iev->ev);
1831 3efd8e31 2022-10-23 thomas event_loopexit(NULL);
1836 414e37cb 2022-12-30 thomas repo_write_main(const char *title, const char *repo_path,
1837 6d7eb4f7 2023-04-04 thomas int *pack_fds, int *temp_fds,
1838 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_tag_namespaces,
1839 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_branch_namespaces,
1840 6d7eb4f7 2023-04-04 thomas struct got_pathlist_head *protected_branches)
1842 3efd8e31 2022-10-23 thomas const struct got_error *err = NULL;
1843 92db09ff 2023-02-17 thomas struct repo_write_client *client = &repo_write_client;
1844 3efd8e31 2022-10-23 thomas struct gotd_imsgev iev;
1846 92db09ff 2023-02-17 thomas client->fd = -1;
1847 92db09ff 2023-02-17 thomas client->pack_pipe = -1;
1848 92db09ff 2023-02-17 thomas client->packidx_fd = -1;
1849 92db09ff 2023-02-17 thomas client->pack.fd = -1;
1851 3efd8e31 2022-10-23 thomas repo_write.title = title;
1852 3efd8e31 2022-10-23 thomas repo_write.pid = getpid();
1853 3efd8e31 2022-10-23 thomas repo_write.pack_fds = pack_fds;
1854 3efd8e31 2022-10-23 thomas repo_write.temp_fds = temp_fds;
1855 62ee7d94 2023-01-10 thomas repo_write.session_fd = -1;
1856 62ee7d94 2023-01-10 thomas repo_write.session_iev.ibuf.fd = -1;
1857 6d7eb4f7 2023-04-04 thomas repo_write.protected_tag_namespaces = protected_tag_namespaces;
1858 6d7eb4f7 2023-04-04 thomas repo_write.protected_branch_namespaces = protected_branch_namespaces;
1859 6d7eb4f7 2023-04-04 thomas repo_write.protected_branches = protected_branches;
1861 9148c8a7 2023-01-02 thomas STAILQ_INIT(&repo_write_client.ref_updates);
1863 414e37cb 2022-12-30 thomas err = got_repo_open(&repo_write.repo, repo_path, NULL, pack_fds);
1864 3efd8e31 2022-10-23 thomas if (err)
1865 3efd8e31 2022-10-23 thomas goto done;
1866 3efd8e31 2022-10-23 thomas if (!got_repo_is_bare(repo_write.repo)) {
1867 3efd8e31 2022-10-23 thomas err = got_error_msg(GOT_ERR_NOT_GIT_REPO,
1868 3efd8e31 2022-10-23 thomas "bare git repository required");
1869 3efd8e31 2022-10-23 thomas goto done;
1872 3efd8e31 2022-10-23 thomas got_repo_temp_fds_set(repo_write.repo, temp_fds);
1874 3efd8e31 2022-10-23 thomas signal(SIGINT, catch_sigint);
1875 3efd8e31 2022-10-23 thomas signal(SIGTERM, catch_sigterm);
1876 3efd8e31 2022-10-23 thomas signal(SIGPIPE, SIG_IGN);
1877 3efd8e31 2022-10-23 thomas signal(SIGHUP, SIG_IGN);
1879 bb3a6ce9 2022-11-17 thomas imsg_init(&iev.ibuf, GOTD_FILENO_MSG_PIPE);
1880 3efd8e31 2022-10-23 thomas iev.handler = repo_write_dispatch;
1881 3efd8e31 2022-10-23 thomas iev.events = EV_READ;
1882 3efd8e31 2022-10-23 thomas iev.handler_arg = NULL;
1883 3efd8e31 2022-10-23 thomas event_set(&iev.ev, iev.ibuf.fd, EV_READ, repo_write_dispatch, &iev);
1884 85b37c72 2022-12-30 thomas if (gotd_imsg_compose_event(&iev, GOTD_IMSG_REPO_CHILD_READY,
1885 85b37c72 2022-12-30 thomas PROC_REPO_WRITE, -1, NULL, 0) == -1) {
1886 85b37c72 2022-12-30 thomas err = got_error_from_errno("imsg compose REPO_CHILD_READY");
1887 3efd8e31 2022-10-23 thomas goto done;
1890 3efd8e31 2022-10-23 thomas event_dispatch();
1892 3efd8e31 2022-10-23 thomas if (err)
1893 3efd8e31 2022-10-23 thomas log_warnx("%s: %s", title, err->msg);
1894 3efd8e31 2022-10-23 thomas repo_write_shutdown();
1898 3efd8e31 2022-10-23 thomas repo_write_shutdown(void)
1900 92db09ff 2023-02-17 thomas struct repo_write_client *client = &repo_write_client;
1901 92db09ff 2023-02-17 thomas struct gotd_ref_update *ref_update;
1903 7161c4dc 2023-03-05 thomas log_debug("shutting down");
1905 92db09ff 2023-02-17 thomas while (!STAILQ_EMPTY(&client->ref_updates)) {
1906 92db09ff 2023-02-17 thomas ref_update = STAILQ_FIRST(&client->ref_updates);
1907 92db09ff 2023-02-17 thomas STAILQ_REMOVE_HEAD(&client->ref_updates, entry);
1908 92db09ff 2023-02-17 thomas got_ref_close(ref_update->ref);
1909 92db09ff 2023-02-17 thomas free(ref_update);
1912 92db09ff 2023-02-17 thomas got_pack_close(&client->pack);
1913 92db09ff 2023-02-17 thomas if (client->fd != -1)
1914 92db09ff 2023-02-17 thomas close(client->fd);
1915 92db09ff 2023-02-17 thomas if (client->pack_pipe != -1)
1916 92db09ff 2023-02-17 thomas close(client->pack_pipe);
1917 92db09ff 2023-02-17 thomas if (client->packidx_fd != -1)
1918 92db09ff 2023-02-17 thomas close(client->packidx_fd);
1920 3efd8e31 2022-10-23 thomas if (repo_write.repo)
1921 3efd8e31 2022-10-23 thomas got_repo_close(repo_write.repo);
1922 3efd8e31 2022-10-23 thomas got_repo_pack_fds_close(repo_write.pack_fds);
1923 80536967 2022-10-30 thomas got_repo_temp_fds_close(repo_write.temp_fds);
1924 62ee7d94 2023-01-10 thomas if (repo_write.session_fd != -1)
1925 62ee7d94 2023-01-10 thomas close(repo_write.session_fd);
1926 3efd8e31 2022-10-23 thomas exit(0);
