2 * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include "got_compat.h"
19 #include <sys/queue.h>
21 #include <sys/types.h>
38 #include "got_error.h"
39 #include "got_repository.h"
40 #include "got_object.h"
41 #include "got_reference.h"
44 #include "got_cancel.h"
45 #include "got_commit_graph.h"
46 #include "got_opentemp.h"
48 #include "got_lib_delta.h"
49 #include "got_lib_delta_cache.h"
50 #include "got_lib_hash.h"
51 #include "got_lib_object.h"
52 #include "got_lib_object_cache.h"
53 #include "got_lib_object_idset.h"
54 #include "got_lib_object_parse.h"
55 #include "got_lib_ratelimit.h"
56 #include "got_lib_pack.h"
57 #include "got_lib_pack_index.h"
58 #include "got_lib_repository.h"
59 #include "got_lib_poll.h"
63 #include "repo_write.h"
66 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
69 static struct repo_write {
72 struct got_repository *repo;
76 struct gotd_imsgev session_iev;
77 struct got_pathlist_head *protected_tag_namespaces;
78 struct got_pathlist_head *protected_branch_namespaces;
79 struct got_pathlist_head *protected_branches;
89 struct gotd_ref_update {
90 STAILQ_ENTRY(gotd_ref_update) entry;
91 struct got_reference *ref;
94 struct got_object_id old_id;
95 struct got_object_id new_id;
97 STAILQ_HEAD(gotd_ref_updates, gotd_ref_update);
99 static struct repo_write_client {
103 struct got_pack pack;
104 uint8_t pack_sha1[SHA1_DIGEST_LENGTH];
106 struct gotd_ref_updates ref_updates;
113 static volatile sig_atomic_t sigint_received;
114 static volatile sig_atomic_t sigterm_received;
117 catch_sigint(int signo)
123 catch_sigterm(int signo)
125 sigterm_received = 1;
128 static const struct got_error *
129 check_cancelled(void *arg)
131 if (sigint_received || sigterm_received)
132 return got_error(GOT_ERR_CANCELLED);
137 static const struct got_error *
138 send_peeled_tag_ref(struct got_reference *ref, struct got_object *obj,
139 struct imsgbuf *ibuf)
141 const struct got_error *err = NULL;
142 struct got_tag_object *tag;
144 char *peeled_refname = NULL;
145 struct got_object_id *id;
148 err = got_object_tag_open(&tag, repo_write.repo, obj);
152 if (asprintf(&peeled_refname, "%s^{}", got_ref_get_name(ref)) == -1) {
153 err = got_error_from_errno("asprintf");
157 id = got_object_tag_get_object_id(tag);
158 namelen = strlen(peeled_refname);
160 len = sizeof(struct gotd_imsg_ref) + namelen;
161 if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
162 err = got_error(GOT_ERR_NO_SPACE);
166 wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
167 repo_write.pid, len);
169 err = got_error_from_errno("imsg_create REF");
173 /* Keep in sync with struct gotd_imsg_ref definition. */
174 if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1) {
175 err = got_error_from_errno("imsg_add REF");
178 if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1) {
179 err = got_error_from_errno("imsg_add REF");
182 if (imsg_add(wbuf, peeled_refname, namelen) == -1) {
183 err = got_error_from_errno("imsg_add REF");
187 imsg_close(ibuf, wbuf);
189 got_object_tag_close(tag);
193 static const struct got_error *
194 send_ref(struct got_reference *ref, struct imsgbuf *ibuf)
196 const struct got_error *err;
197 const char *refname = got_ref_get_name(ref);
199 struct got_object_id *id = NULL;
200 struct got_object *obj = NULL;
204 namelen = strlen(refname);
206 len = sizeof(struct gotd_imsg_ref) + namelen;
207 if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
208 return got_error(GOT_ERR_NO_SPACE);
210 err = got_ref_resolve(&id, repo_write.repo, ref);
214 wbuf = imsg_create(ibuf, GOTD_IMSG_REF, PROC_REPO_WRITE,
215 repo_write.pid, len);
217 err = got_error_from_errno("imsg_create REF");
221 /* Keep in sync with struct gotd_imsg_ref definition. */
222 if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1)
223 return got_error_from_errno("imsg_add REF");
224 if (imsg_add(wbuf, &namelen, sizeof(namelen)) == -1)
225 return got_error_from_errno("imsg_add REF");
226 if (imsg_add(wbuf, refname, namelen) == -1)
227 return got_error_from_errno("imsg_add REF");
229 imsg_close(ibuf, wbuf);
231 err = got_object_open(&obj, repo_write.repo, id);
234 if (obj->type == GOT_OBJ_TYPE_TAG)
235 err = send_peeled_tag_ref(ref, obj, ibuf);
238 got_object_close(obj);
243 static const struct got_error *
244 list_refs(struct imsg *imsg)
246 const struct got_error *err;
247 struct repo_write_client *client = &repo_write_client;
248 struct got_reflist_head refs;
249 struct got_reflist_entry *re;
251 struct gotd_imsg_reflist irefs;
257 client_fd = imsg_get_fd(imsg);
259 return got_error(GOT_ERR_PRIVSEP_NO_FD);
261 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
263 return got_error(GOT_ERR_PRIVSEP_LEN);
265 if (repo_write.refs_listed) {
266 return got_error_msg(GOT_ERR_CLIENT_ID,
267 "duplicate list-refs request");
269 repo_write.refs_listed = 1;
271 client->fd = client_fd;
272 client->nref_updates = 0;
273 client->nref_del = 0;
274 client->nref_new = 0;
275 client->nref_move = 0;
277 imsg_init(&ibuf, client_fd);
279 err = got_ref_list(&refs, repo_write.repo, "",
280 got_ref_cmp_by_name, NULL);
284 memset(&irefs, 0, sizeof(irefs));
285 TAILQ_FOREACH(re, &refs, entry) {
286 struct got_object_id *id;
289 if (got_ref_is_symbolic(re->ref))
294 /* Account for a peeled tag refs. */
295 err = got_ref_resolve(&id, repo_write.repo, re->ref);
298 err = got_object_get_type(&obj_type, repo_write.repo, id);
302 if (obj_type == GOT_OBJ_TYPE_TAG)
306 if (imsg_compose(&ibuf, GOTD_IMSG_REFLIST, PROC_REPO_WRITE,
307 repo_write.pid, -1, &irefs, sizeof(irefs)) == -1) {
308 err = got_error_from_errno("imsg_compose REFLIST");
312 TAILQ_FOREACH(re, &refs, entry) {
313 if (got_ref_is_symbolic(re->ref))
315 err = send_ref(re->ref, &ibuf);
320 err = gotd_imsg_flush(&ibuf);
322 got_ref_list_free(&refs);
327 static const struct got_error *
328 validate_namespace(const char *namespace)
330 size_t len = strlen(namespace);
332 if (len < 5 || strncmp("refs/", namespace, 5) != 0 ||
333 namespace[len -1] != '/') {
334 return got_error_fmt(GOT_ERR_BAD_REF_NAME,
335 "reference namespace '%s'", namespace);
341 static const struct got_error *
342 protect_ref_namespace(const char *refname, const char *namespace)
344 const struct got_error *err;
346 err = validate_namespace(namespace);
350 if (strncmp(namespace, refname, strlen(namespace)) == 0)
351 return got_error_fmt(GOT_ERR_REFS_PROTECTED, "%s", namespace);
356 static const struct got_error *
357 verify_object_type(struct got_object_id *id, int expected_obj_type,
358 struct got_pack *pack, struct got_packidx *packidx)
360 const struct got_error *err;
361 char hex[SHA1_DIGEST_STRING_LENGTH];
362 struct got_object *obj;
366 idx = got_packidx_get_object_idx(packidx, id);
368 got_sha1_digest_to_str(id->sha1, hex, sizeof(hex));
369 return got_error_fmt(GOT_ERR_BAD_PACKFILE,
370 "object %s is missing from pack file", hex);
373 err = got_object_open_from_packfile(&obj, id, pack, packidx,
374 idx, repo_write.repo);
378 if (obj->type != expected_obj_type) {
379 got_sha1_digest_to_str(id->sha1, hex, sizeof(hex));
380 got_object_type_label(&typestr, expected_obj_type);
381 err = got_error_fmt(GOT_ERR_OBJ_TYPE,
382 "%s is not pointing at a %s object", hex, typestr);
384 got_object_close(obj);
388 static const struct got_error *
389 protect_tag_namespace(const char *namespace, struct got_pack *pack,
390 struct got_packidx *packidx, struct gotd_ref_update *ref_update)
392 const struct got_error *err;
394 err = validate_namespace(namespace);
398 if (strncmp(namespace, got_ref_get_name(ref_update->ref),
399 strlen(namespace)) != 0)
402 if (!ref_update->ref_is_new)
403 return got_error_fmt(GOT_ERR_REFS_PROTECTED, "%s", namespace);
405 return verify_object_type(&ref_update->new_id, GOT_OBJ_TYPE_TAG,
409 static const struct got_error *
410 protect_require_yca(struct got_object_id *tip_id,
411 size_t max_commits_to_traverse, struct got_pack *pack,
412 struct got_packidx *packidx, struct got_reference *ref)
414 const struct got_error *err;
417 struct got_object_id *expected_yca_id = NULL;
418 struct got_object *obj = NULL;
419 struct got_commit_object *commit = NULL;
420 char hex[SHA1_DIGEST_STRING_LENGTH];
421 const struct got_object_id_queue *parent_ids;
422 struct got_object_id_queue ids;
423 struct got_object_qid *pid, *qid;
424 struct got_object_idset *traversed_set = NULL;
425 int found_yca = 0, obj_type;
429 err = got_ref_resolve(&expected_yca_id, repo_write.repo, ref);
433 err = got_object_get_type(&obj_type, repo_write.repo, expected_yca_id);
437 if (obj_type != GOT_OBJ_TYPE_COMMIT) {
438 got_sha1_digest_to_str(expected_yca_id->sha1, hex, sizeof(hex));
439 err = got_error_fmt(GOT_ERR_OBJ_TYPE,
440 "%s is not pointing at a commit object", hex);
444 traversed_set = got_object_idset_alloc();
445 if (traversed_set == NULL) {
446 err = got_error_from_errno("got_object_idset_alloc");
450 err = got_object_qid_alloc(&qid, tip_id);
453 STAILQ_INSERT_TAIL(&ids, qid, entry);
454 while (!STAILQ_EMPTY(&ids)) {
455 err = check_cancelled(NULL);
459 qid = STAILQ_FIRST(&ids);
460 if (got_object_id_cmp(&qid->id, expected_yca_id) == 0) {
465 if (got_object_idset_num_elements(traversed_set) >=
466 max_commits_to_traverse)
469 if (got_object_idset_contains(traversed_set, &qid->id)) {
470 STAILQ_REMOVE_HEAD(&ids, entry);
471 got_object_qid_free(qid);
475 err = got_object_idset_add(traversed_set, &qid->id, NULL);
479 err = got_object_open(&obj, repo_write.repo, &qid->id);
480 if (err && err->code != GOT_ERR_NO_OBJ)
484 err = got_object_commit_open(&commit, repo_write.repo,
491 idx = got_packidx_get_object_idx(packidx, &qid->id);
493 got_sha1_digest_to_str(qid->id.sha1,
495 err = got_error_fmt(GOT_ERR_BAD_PACKFILE,
496 "object %s is missing from pack file", hex);
500 err = got_object_open_from_packfile(&obj, &qid->id,
501 pack, packidx, idx, repo_write.repo);
505 if (obj->type != GOT_OBJ_TYPE_COMMIT) {
506 got_sha1_digest_to_str(qid->id.sha1,
508 err = got_error_fmt(GOT_ERR_OBJ_TYPE,
509 "%s is not pointing at a commit object",
514 err = got_packfile_extract_object_to_mem(&buf, &len,
519 err = got_object_parse_commit(&commit, buf, len);
527 got_object_close(obj);
530 STAILQ_REMOVE_HEAD(&ids, entry);
531 got_object_qid_free(qid);
534 if (got_object_commit_get_nparents(commit) == 0)
537 parent_ids = got_object_commit_get_parent_ids(commit);
538 STAILQ_FOREACH(pid, parent_ids, entry) {
539 err = check_cancelled(NULL);
542 err = got_object_qid_alloc(&qid, &pid->id);
545 STAILQ_INSERT_TAIL(&ids, qid, entry);
548 got_object_commit_close(commit);
553 err = got_error_fmt(GOT_ERR_REF_PROTECTED, "%s",
554 got_ref_get_name(ref));
557 got_object_idset_free(traversed_set);
558 got_object_id_queue_free(&ids);
561 got_object_close(obj);
563 got_object_commit_close(commit);
564 free(expected_yca_id);
568 static const struct got_error *
569 protect_branch_namespace(const char *namespace, struct got_pack *pack,
570 struct got_packidx *packidx, struct gotd_ref_update *ref_update)
572 const struct got_error *err;
574 err = validate_namespace(namespace);
578 if (strncmp(namespace, got_ref_get_name(ref_update->ref),
579 strlen(namespace)) != 0)
582 if (ref_update->ref_is_new) {
583 return verify_object_type(&ref_update->new_id,
584 GOT_OBJ_TYPE_COMMIT, pack, packidx);
587 return protect_require_yca(&ref_update->new_id,
588 be32toh(packidx->hdr.fanout_table[0xff]), pack, packidx,
592 static const struct got_error *
593 protect_branch(const char *refname, struct got_pack *pack,
594 struct got_packidx *packidx, struct gotd_ref_update *ref_update)
596 if (strcmp(refname, got_ref_get_name(ref_update->ref)) != 0)
599 /* Always allow new branches to be created. */
600 if (ref_update->ref_is_new) {
601 return verify_object_type(&ref_update->new_id,
602 GOT_OBJ_TYPE_COMMIT, pack, packidx);
605 return protect_require_yca(&ref_update->new_id,
606 be32toh(packidx->hdr.fanout_table[0xff]), pack, packidx,
610 static const struct got_error *
611 recv_ref_update(struct imsg *imsg)
613 static const char zero_id[SHA1_DIGEST_LENGTH];
614 const struct got_error *err = NULL;
615 struct repo_write_client *client = &repo_write_client;
616 struct gotd_imsg_ref_update iref;
618 char *refname = NULL;
619 struct got_reference *ref = NULL;
620 struct got_object_id *id = NULL;
622 struct gotd_ref_update *ref_update = NULL;
624 log_debug("ref-update received");
626 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
627 if (datalen < sizeof(iref))
628 return got_error(GOT_ERR_PRIVSEP_LEN);
629 memcpy(&iref, imsg->data, sizeof(iref));
630 if (datalen != sizeof(iref) + iref.name_len)
631 return got_error(GOT_ERR_PRIVSEP_LEN);
633 imsg_init(&ibuf, client->fd);
635 refname = strndup(imsg->data + sizeof(iref), iref.name_len);
637 return got_error_from_errno("strndup");
639 ref_update = calloc(1, sizeof(*ref_update));
640 if (ref_update == NULL) {
641 err = got_error_from_errno("malloc");
645 memcpy(ref_update->old_id.sha1, iref.old_id, SHA1_DIGEST_LENGTH);
646 memcpy(ref_update->new_id.sha1, iref.new_id, SHA1_DIGEST_LENGTH);
648 err = got_ref_open(&ref, repo_write.repo, refname, 0);
650 if (err->code != GOT_ERR_NOT_REF)
652 if (memcmp(ref_update->new_id.sha1,
653 zero_id, sizeof(zero_id)) == 0) {
654 err = got_error_fmt(GOT_ERR_BAD_OBJ_ID,
658 err = got_ref_alloc(&ref, refname, &ref_update->new_id);
661 ref_update->ref_is_new = 1;
664 if (got_ref_is_symbolic(ref)) {
665 err = got_error_fmt(GOT_ERR_BAD_REF_TYPE,
666 "'%s' is a symbolic reference and cannot "
667 "be updated", got_ref_get_name(ref));
670 if (strncmp("refs/", got_ref_get_name(ref), 5) != 0) {
671 err = got_error_fmt(GOT_ERR_BAD_REF_NAME,
672 "%s: does not begin with 'refs/'",
673 got_ref_get_name(ref));
677 err = protect_ref_namespace(got_ref_get_name(ref), "refs/got/");
680 err = protect_ref_namespace(got_ref_get_name(ref), "refs/remotes/");
684 if (!ref_update->ref_is_new) {
686 * Ensure the client's idea of this update is still valid.
687 * At this point we can only return an error, to prevent
688 * the client from uploading a pack file which will likely
689 * have to be discarded.
691 err = got_ref_resolve(&id, repo_write.repo, ref);
695 if (got_object_id_cmp(id, &ref_update->old_id) != 0) {
696 err = got_error_fmt(GOT_ERR_REF_BUSY,
697 "%s has been modified by someone else "
698 "while transaction was in progress",
699 got_ref_get_name(ref));
704 gotd_imsg_send_ack(&ref_update->new_id, &ibuf, PROC_REPO_WRITE,
707 ref_update->ref = ref;
708 if (memcmp(ref_update->new_id.sha1, zero_id, sizeof(zero_id)) == 0) {
709 ref_update->delete_ref = 1;
712 STAILQ_INSERT_HEAD(&client->ref_updates, ref_update, entry);
713 client->nref_updates++;
725 static const struct got_error *
726 pack_index_progress(void *arg, uint32_t nobj_total, uint32_t nobj_indexed,
727 uint32_t nobj_loose, uint32_t nobj_resolved)
729 int p_indexed = 0, p_resolved = 0;
730 int nobj_delta = nobj_total - nobj_loose;
733 p_indexed = (nobj_indexed * 100) / nobj_total;
736 p_resolved = (nobj_resolved * 100) / nobj_delta;
738 if (p_resolved > 0) {
739 log_debug("indexing %d objects %d%%; resolving %d deltas %d%%",
740 nobj_total, p_indexed, nobj_delta, p_resolved);
742 log_debug("indexing %d objects %d%%", nobj_total, p_indexed);
747 static const struct got_error *
748 read_more_pack_stream(int infd, BUF *buf, size_t minsize)
750 const struct got_error *err = NULL;
751 uint8_t readahead[65536];
754 err = got_poll_read_full(infd, &have,
755 readahead, sizeof(readahead), minsize);
759 err = buf_append(&newlen, buf, readahead, have);
765 static const struct got_error *
766 copy_object_type_and_size(uint8_t *type, uint64_t *size, int infd, int outfd,
767 off_t *outsize, BUF *buf, size_t *buf_pos, struct got_hash *ctx)
769 const struct got_error *err = NULL;
774 off_t obj_offset = *outsize;
777 /* We do not support size values which don't fit in 64 bit. */
779 return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
780 "packfile offset %lld", (long long)obj_offset);
782 if (buf_len(buf) - *buf_pos < sizeof(sizebuf[0])) {
783 err = read_more_pack_stream(infd, buf,
789 sizebuf[i] = buf_getc(buf, *buf_pos);
790 *buf_pos += sizeof(sizebuf[i]);
793 t = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_TYPE_MASK) >>
794 GOT_PACK_OBJ_SIZE0_TYPE_MASK_SHIFT;
795 s = (sizebuf[i] & GOT_PACK_OBJ_SIZE0_VAL_MASK);
797 size_t shift = 4 + 7 * (i - 1);
798 s |= ((sizebuf[i] & GOT_PACK_OBJ_SIZE_VAL_MASK) <<
802 } while (sizebuf[i - 1] & GOT_PACK_OBJ_SIZE_MORE);
804 err = got_pack_hwrite(outfd, sizebuf, i, ctx);
814 static const struct got_error *
815 copy_ref_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
816 struct got_hash *ctx)
818 const struct got_error *err = NULL;
819 size_t remain = buf_len(buf) - *buf_pos;
821 if (remain < SHA1_DIGEST_LENGTH) {
822 err = read_more_pack_stream(infd, buf,
823 SHA1_DIGEST_LENGTH - remain);
828 err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
829 SHA1_DIGEST_LENGTH, ctx);
833 *buf_pos += SHA1_DIGEST_LENGTH;
837 static const struct got_error *
838 copy_offset_delta(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
839 struct got_hash *ctx)
841 const struct got_error *err = NULL;
845 off_t obj_offset = *outsize;
848 /* We do not support offset values which don't fit in 64 bit. */
850 return got_error_fmt(GOT_ERR_OBJ_TOO_LARGE,
851 "packfile offset %lld", (long long)obj_offset);
853 if (buf_len(buf) - *buf_pos < sizeof(offbuf[0])) {
854 err = read_more_pack_stream(infd, buf,
860 offbuf[i] = buf_getc(buf, *buf_pos);
861 *buf_pos += sizeof(offbuf[i]);
864 o = (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
868 o += (offbuf[i] & GOT_PACK_OBJ_DELTA_OFF_VAL_MASK);
871 } while (offbuf[i - 1] & GOT_PACK_OBJ_DELTA_OFF_MORE);
873 if (o < sizeof(struct got_packfile_hdr) || o > *outsize)
874 return got_error(GOT_ERR_PACK_OFFSET);
876 err = got_pack_hwrite(outfd, offbuf, i, ctx);
884 static const struct got_error *
885 copy_zstream(int infd, int outfd, off_t *outsize, BUF *buf, size_t *buf_pos,
886 struct got_hash *ctx)
888 const struct got_error *err = NULL;
892 size_t consumed_total = 0;
893 off_t zstream_offset = *outsize;
895 memset(&z, 0, sizeof(z));
899 zret = inflateInit(&z);
902 return got_error_from_errno("inflateInit");
903 if (zret == Z_MEM_ERROR) {
905 return got_error_from_errno("inflateInit");
907 return got_error_msg(GOT_ERR_DECOMPRESSION,
908 "inflateInit failed");
911 while (zret != Z_STREAM_END) {
912 size_t last_total_in, consumed;
915 * Decompress into the void. Object data will be parsed
916 * later, when the pack file is indexed. For now, we just
917 * want to locate the end of the compressed stream.
919 while (zret != Z_STREAM_END && buf_len(buf) - *buf_pos > 0) {
920 last_total_in = z.total_in;
921 z.next_in = buf_get(buf) + *buf_pos;
922 z.avail_in = buf_len(buf) - *buf_pos;
923 z.next_out = voidbuf;
924 z.avail_out = sizeof(voidbuf);
926 zret = inflate(&z, Z_SYNC_FLUSH);
927 if (zret != Z_OK && zret != Z_BUF_ERROR &&
928 zret != Z_STREAM_END) {
929 err = got_error_fmt(GOT_ERR_DECOMPRESSION,
930 "packfile offset %lld",
931 (long long)zstream_offset);
934 consumed = z.total_in - last_total_in;
936 err = got_pack_hwrite(outfd, buf_get(buf) + *buf_pos,
941 err = buf_discard(buf, *buf_pos + consumed);
946 consumed_total += consumed;
949 if (zret != Z_STREAM_END) {
950 err = read_more_pack_stream(infd, buf, 1);
957 *outsize += consumed_total;
963 static const struct got_error *
964 validate_object_type(int obj_type)
967 case GOT_OBJ_TYPE_BLOB:
968 case GOT_OBJ_TYPE_COMMIT:
969 case GOT_OBJ_TYPE_TREE:
970 case GOT_OBJ_TYPE_TAG:
971 case GOT_OBJ_TYPE_REF_DELTA:
972 case GOT_OBJ_TYPE_OFFSET_DELTA:
978 return got_error(GOT_ERR_OBJ_TYPE);
981 static const struct got_error *
982 ensure_all_objects_exist_locally(struct gotd_ref_updates *ref_updates)
984 const struct got_error *err = NULL;
985 struct gotd_ref_update *ref_update;
986 struct got_object *obj;
988 STAILQ_FOREACH(ref_update, ref_updates, entry) {
989 err = got_object_open(&obj, repo_write.repo,
990 &ref_update->new_id);
993 got_object_close(obj);
999 static const struct got_error *
1000 recv_packdata(off_t *outsize, uint32_t *nobj, uint8_t *sha1,
1001 int infd, int outfd)
1003 const struct got_error *err;
1004 struct repo_write_client *client = &repo_write_client;
1005 struct got_packfile_hdr hdr;
1008 struct got_hash ctx;
1009 uint8_t expected_sha1[SHA1_DIGEST_LENGTH];
1010 char hex[SHA1_DIGEST_STRING_LENGTH];
1012 size_t buf_pos = 0, remain;
1018 /* if only deleting references there's nothing to read */
1019 if (client->nref_updates == client->nref_del)
1022 got_hash_init(&ctx, GOT_HASH_SHA1);
1024 err = got_poll_read_full(infd, &have, &hdr, sizeof(hdr), sizeof(hdr));
1027 if (have != sizeof(hdr))
1028 return got_error_msg(GOT_ERR_BAD_PACKFILE, "short pack file");
1031 if (hdr.signature != htobe32(GOT_PACKFILE_SIGNATURE))
1032 return got_error_msg(GOT_ERR_BAD_PACKFILE,
1033 "bad packfile signature");
1034 if (hdr.version != htobe32(GOT_PACKFILE_VERSION))
1035 return got_error_msg(GOT_ERR_BAD_PACKFILE,
1036 "bad packfile version");
1038 *nobj = be32toh(hdr.nobjects);
1041 * Clients which are creating new references only
1042 * will send us an empty pack file.
1044 if (client->nref_updates > 0 &&
1045 client->nref_updates == client->nref_new)
1049 * Clients which only move existing refs will send us an empty
1050 * pack file. All referenced objects must exist locally.
1052 err = ensure_all_objects_exist_locally(&client->ref_updates);
1054 if (err->code != GOT_ERR_NO_OBJ)
1056 return got_error_msg(GOT_ERR_BAD_PACKFILE,
1057 "bad packfile with zero objects");
1060 client->nref_move = client->nref_updates;
1064 log_debug("expecting %d objects", *nobj);
1066 err = got_pack_hwrite(outfd, &hdr, sizeof(hdr), &ctx);
1070 err = buf_alloc(&buf, 65536);
1074 while (nhave != *nobj) {
1078 err = copy_object_type_and_size(&obj_type, &obj_size,
1079 infd, outfd, outsize, buf, &buf_pos, &ctx);
1083 err = validate_object_type(obj_type);
1087 if (obj_type == GOT_OBJ_TYPE_REF_DELTA) {
1088 err = copy_ref_delta(infd, outfd, outsize,
1089 buf, &buf_pos, &ctx);
1092 } else if (obj_type == GOT_OBJ_TYPE_OFFSET_DELTA) {
1093 err = copy_offset_delta(infd, outfd, outsize,
1094 buf, &buf_pos, &ctx);
1099 err = copy_zstream(infd, outfd, outsize, buf, &buf_pos, &ctx);
1106 log_debug("received %u objects", *nobj);
1108 got_hash_final(&ctx, expected_sha1);
1110 remain = buf_len(buf) - buf_pos;
1111 if (remain < SHA1_DIGEST_LENGTH) {
1112 err = read_more_pack_stream(infd, buf,
1113 SHA1_DIGEST_LENGTH - remain);
1118 got_sha1_digest_to_str(expected_sha1, hex, sizeof(hex));
1119 log_debug("expect SHA1: %s", hex);
1120 got_sha1_digest_to_str(buf_get(buf) + buf_pos, hex, sizeof(hex));
1121 log_debug("actual SHA1: %s", hex);
1123 if (memcmp(buf_get(buf) + buf_pos, expected_sha1,
1124 SHA1_DIGEST_LENGTH) != 0) {
1125 err = got_error(GOT_ERR_PACKFILE_CSUM);
1129 memcpy(sha1, expected_sha1, SHA1_DIGEST_LENGTH);
1131 w = write(outfd, expected_sha1, SHA1_DIGEST_LENGTH);
1133 err = got_error_from_errno("write");
1136 if (w != SHA1_DIGEST_LENGTH) {
1137 err = got_error(GOT_ERR_IO);
1141 *outsize += SHA1_DIGEST_LENGTH;
1143 if (fsync(outfd) == -1) {
1144 err = got_error_from_errno("fsync");
1147 if (lseek(outfd, 0L, SEEK_SET) == -1) {
1148 err = got_error_from_errno("lseek");
1156 static const struct got_error *
1157 report_pack_status(const struct got_error *unpack_err)
1159 const struct got_error *err = NULL;
1160 struct repo_write_client *client = &repo_write_client;
1161 struct gotd_imsg_packfile_status istatus;
1163 struct imsgbuf ibuf;
1164 const char *unpack_ok = "unpack ok\n";
1167 imsg_init(&ibuf, client->fd);
1170 istatus.reason_len = strlen(unpack_err->msg);
1172 istatus.reason_len = strlen(unpack_ok);
1174 len = sizeof(istatus) + istatus.reason_len;
1175 wbuf = imsg_create(&ibuf, GOTD_IMSG_PACKFILE_STATUS, PROC_REPO_WRITE,
1176 repo_write.pid, len);
1178 err = got_error_from_errno("imsg_create PACKFILE_STATUS");
1182 if (imsg_add(wbuf, &istatus, sizeof(istatus)) == -1) {
1183 err = got_error_from_errno("imsg_add PACKFILE_STATUS");
1187 if (imsg_add(wbuf, err ? err->msg : unpack_ok,
1188 istatus.reason_len) == -1) {
1189 err = got_error_from_errno("imsg_add PACKFILE_STATUS");
1193 imsg_close(&ibuf, wbuf);
1195 err = gotd_imsg_flush(&ibuf);
1201 static const struct got_error *
1202 recv_packfile(int *have_packfile, struct imsg *imsg)
1204 const struct got_error *err = NULL, *unpack_err;
1205 struct repo_write_client *client = &repo_write_client;
1206 struct gotd_imsg_recv_packfile ireq;
1207 FILE *tempfiles[3] = { NULL, NULL, NULL };
1208 struct repo_tempfile {
1211 } repo_tempfiles[3] = { { - 1, - 1 }, { - 1, - 1 }, { - 1, - 1 }, };
1214 struct imsgbuf ibuf;
1215 struct got_ratelimit rl;
1216 struct got_pack *pack = NULL;
1217 off_t pack_filesize = 0;
1220 log_debug("packfile request received");
1223 got_ratelimit_init(&rl, 2, 0);
1225 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1226 if (datalen != sizeof(ireq))
1227 return got_error(GOT_ERR_PRIVSEP_LEN);
1228 memcpy(&ireq, imsg->data, sizeof(ireq));
1230 if (client->pack_pipe == -1 || client->packidx_fd == -1)
1231 return got_error(GOT_ERR_PRIVSEP_NO_FD);
1233 imsg_init(&ibuf, client->fd);
1235 pack = &client->pack;
1236 memset(pack, 0, sizeof(*pack));
1237 pack->fd = imsg_get_fd(imsg);
1239 return got_error(GOT_ERR_PRIVSEP_NO_FD);
1241 err = got_delta_cache_alloc(&pack->delta_cache);
1245 for (i = 0; i < nitems(repo_tempfiles); i++) {
1246 struct repo_tempfile *t = &repo_tempfiles[i];
1247 err = got_repo_temp_fds_get(&t->fd, &t->idx, repo_write.repo);
1252 for (i = 0; i < nitems(tempfiles); i++) {
1256 fd = dup(repo_tempfiles[i].fd);
1258 err = got_error_from_errno("dup");
1261 f = fdopen(fd, "w+");
1263 err = got_error_from_errno("fdopen");
1270 err = gotd_imsg_flush(&ibuf);
1274 log_debug("receiving pack data");
1275 unpack_err = recv_packdata(&pack_filesize, &nobj,
1276 client->pack_sha1, client->pack_pipe, pack->fd);
1277 if (ireq.report_status) {
1278 err = report_pack_status(unpack_err);
1280 /* Git clients hang up after sending the pack file. */
1281 if (err->code == GOT_ERR_EOF)
1290 log_debug("pack data received");
1293 * Clients which are creating new references only will
1294 * send us an empty pack file.
1297 pack_filesize == sizeof(struct got_packfile_hdr) &&
1298 client->nref_updates > 0 &&
1299 client->nref_updates == client->nref_new)
1303 * Clients which are deleting references only will send
1307 client->nref_del > 0 &&
1308 client->nref_updates == client->nref_del)
1312 * Clients which only move existing refs will send us an empty
1313 * pack file. All referenced objects must exist locally.
1316 pack_filesize == sizeof(struct got_packfile_hdr) &&
1317 client->nref_move > 0 &&
1318 client->nref_updates == client->nref_move)
1321 pack->filesize = pack_filesize;
1324 log_debug("begin indexing pack (%lld bytes in size)",
1325 (long long)pack->filesize);
1326 err = got_pack_index(pack, client->packidx_fd,
1327 tempfiles[0], tempfiles[1], tempfiles[2], client->pack_sha1,
1328 pack_index_progress, NULL, &rl);
1331 log_debug("done indexing pack");
1333 if (fsync(client->packidx_fd) == -1) {
1334 err = got_error_from_errno("fsync");
1337 if (lseek(client->packidx_fd, 0L, SEEK_SET) == -1)
1338 err = got_error_from_errno("lseek");
1340 if (close(client->pack_pipe) == -1 && err == NULL)
1341 err = got_error_from_errno("close");
1342 client->pack_pipe = -1;
1343 for (i = 0; i < nitems(repo_tempfiles); i++) {
1344 struct repo_tempfile *t = &repo_tempfiles[i];
1346 got_repo_temp_fds_put(t->idx, repo_write.repo);
1348 for (i = 0; i < nitems(tempfiles); i++) {
1349 if (tempfiles[i] && fclose(tempfiles[i]) == EOF && err == NULL)
1350 err = got_error_from_errno("fclose");
1353 got_pack_close(pack);
1358 static const struct got_error *
1359 verify_packfile(void)
1361 const struct got_error *err = NULL, *close_err;
1362 struct repo_write_client *client = &repo_write_client;
1363 struct gotd_ref_update *ref_update;
1364 struct got_packidx *packidx = NULL;
1366 char *id_str = NULL;
1367 struct got_object *obj = NULL;
1368 struct got_pathlist_entry *pe;
1369 char hex[SHA1_DIGEST_STRING_LENGTH];
1371 if (STAILQ_EMPTY(&client->ref_updates)) {
1372 return got_error_msg(GOT_ERR_BAD_REQUEST,
1373 "cannot verify pack file without any ref-updates");
1376 if (client->pack.fd == -1) {
1377 return got_error_msg(GOT_ERR_BAD_REQUEST,
1378 "invalid pack file handle during pack verification");
1380 if (client->packidx_fd == -1) {
1381 return got_error_msg(GOT_ERR_BAD_REQUEST,
1382 "invalid pack index handle during pack verification");
1385 if (fstat(client->packidx_fd, &sb) == -1)
1386 return got_error_from_errno("pack index fstat");
1388 packidx = malloc(sizeof(*packidx));
1389 memset(packidx, 0, sizeof(*packidx));
1390 packidx->fd = client->packidx_fd;
1391 client->packidx_fd = -1;
1392 packidx->len = sb.st_size;
1394 err = got_packidx_init_hdr(packidx, 1, client->pack.filesize);
1398 STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1399 if (ref_update->delete_ref)
1402 TAILQ_FOREACH(pe, repo_write.protected_tag_namespaces, entry) {
1403 err = protect_tag_namespace(pe->path, &client->pack,
1404 packidx, ref_update);
1410 * Objects which already exist in our repository need
1411 * not be present in the pack file.
1413 err = got_object_open(&obj, repo_write.repo,
1414 &ref_update->new_id);
1415 if (err && err->code != GOT_ERR_NO_OBJ)
1419 got_object_close(obj);
1422 int idx = got_packidx_get_object_idx(packidx,
1423 &ref_update->new_id);
1425 got_sha1_digest_to_str(ref_update->new_id.sha1,
1427 err = got_error_fmt(GOT_ERR_BAD_PACKFILE,
1428 "object %s is missing from pack file",
1434 TAILQ_FOREACH(pe, repo_write.protected_branch_namespaces,
1436 err = protect_branch_namespace(pe->path,
1437 &client->pack, packidx, ref_update);
1441 TAILQ_FOREACH(pe, repo_write.protected_branches, entry) {
1442 err = protect_branch(pe->path, &client->pack,
1443 packidx, ref_update);
1450 close_err = got_packidx_close(packidx);
1451 if (close_err && err == NULL)
1455 got_object_close(obj);
1459 static const struct got_error *
1460 protect_refs_from_deletion(void)
1462 const struct got_error *err = NULL;
1463 struct repo_write_client *client = &repo_write_client;
1464 struct gotd_ref_update *ref_update;
1465 struct got_pathlist_entry *pe;
1466 const char *refname;
1468 STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1469 if (!ref_update->delete_ref)
1472 refname = got_ref_get_name(ref_update->ref);
1474 TAILQ_FOREACH(pe, repo_write.protected_tag_namespaces, entry) {
1475 err = protect_ref_namespace(refname, pe->path);
1480 TAILQ_FOREACH(pe, repo_write.protected_branch_namespaces,
1482 err = protect_ref_namespace(refname, pe->path);
1487 TAILQ_FOREACH(pe, repo_write.protected_branches, entry) {
1488 if (strcmp(refname, pe->path) == 0) {
1489 return got_error_fmt(GOT_ERR_REF_PROTECTED,
1498 static const struct got_error *
1499 install_packfile(struct gotd_imsgev *iev)
1501 struct repo_write_client *client = &repo_write_client;
1502 struct gotd_imsg_packfile_install inst;
1505 memset(&inst, 0, sizeof(inst));
1506 memcpy(inst.pack_sha1, client->pack_sha1, SHA1_DIGEST_LENGTH);
1508 ret = gotd_imsg_compose_event(iev, GOTD_IMSG_PACKFILE_INSTALL,
1509 PROC_REPO_WRITE, -1, &inst, sizeof(inst));
1511 return got_error_from_errno("imsg_compose PACKFILE_INSTALL");
1516 static const struct got_error *
1517 send_ref_updates_start(int nref_updates, struct gotd_imsgev *iev)
1519 struct gotd_imsg_ref_updates_start istart;
1522 memset(&istart, 0, sizeof(istart));
1523 istart.nref_updates = nref_updates;
1525 ret = gotd_imsg_compose_event(iev, GOTD_IMSG_REF_UPDATES_START,
1526 PROC_REPO_WRITE, -1, &istart, sizeof(istart));
1528 return got_error_from_errno("imsg_compose REF_UPDATES_START");
1534 static const struct got_error *
1535 send_ref_update(struct gotd_ref_update *ref_update, struct gotd_imsgev *iev)
1537 struct gotd_imsg_ref_update iref;
1538 const char *refname = got_ref_get_name(ref_update->ref);
1542 memset(&iref, 0, sizeof(iref));
1543 memcpy(iref.old_id, ref_update->old_id.sha1, SHA1_DIGEST_LENGTH);
1544 memcpy(iref.new_id, ref_update->new_id.sha1, SHA1_DIGEST_LENGTH);
1545 iref.ref_is_new = ref_update->ref_is_new;
1546 iref.delete_ref = ref_update->delete_ref;
1547 iref.name_len = strlen(refname);
1549 len = sizeof(iref) + iref.name_len;
1550 wbuf = imsg_create(&iev->ibuf, GOTD_IMSG_REF_UPDATE, PROC_REPO_WRITE,
1551 repo_write.pid, len);
1553 return got_error_from_errno("imsg_create REF_UPDATE");
1555 if (imsg_add(wbuf, &iref, sizeof(iref)) == -1)
1556 return got_error_from_errno("imsg_add REF_UPDATE");
1557 if (imsg_add(wbuf, refname, iref.name_len) == -1)
1558 return got_error_from_errno("imsg_add REF_UPDATE");
1560 imsg_close(&iev->ibuf, wbuf);
1562 gotd_imsg_event_add(iev);
1566 static const struct got_error *
1567 update_refs(struct gotd_imsgev *iev)
1569 const struct got_error *err = NULL;
1570 struct repo_write_client *client = &repo_write_client;
1571 struct gotd_ref_update *ref_update;
1573 err = send_ref_updates_start(client->nref_updates, iev);
1577 STAILQ_FOREACH(ref_update, &client->ref_updates, entry) {
1578 err = send_ref_update(ref_update, iev);
1586 static const struct got_error *
1587 receive_pack_pipe(struct imsg *imsg, struct gotd_imsgev *iev)
1589 struct repo_write_client *client = &repo_write_client;
1592 log_debug("receiving pack pipe descriptor");
1594 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1596 return got_error(GOT_ERR_PRIVSEP_LEN);
1598 if (client->pack_pipe != -1)
1599 return got_error(GOT_ERR_PRIVSEP_MSG);
1601 client->pack_pipe = imsg_get_fd(imsg);
1602 if (client->pack_pipe == -1)
1603 return got_error(GOT_ERR_PRIVSEP_NO_FD);
1608 static const struct got_error *
1609 receive_pack_idx(struct imsg *imsg, struct gotd_imsgev *iev)
1611 struct repo_write_client *client = &repo_write_client;
1614 log_debug("receiving pack index output file");
1616 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1618 return got_error(GOT_ERR_PRIVSEP_LEN);
1620 if (client->packidx_fd != -1)
1621 return got_error(GOT_ERR_PRIVSEP_MSG);
1623 client->packidx_fd = imsg_get_fd(imsg);
1624 if (client->packidx_fd == -1)
1625 return got_error(GOT_ERR_PRIVSEP_NO_FD);
1630 static const struct got_error *
1631 notify_removed_ref(const char *refname, uint8_t *sha1,
1632 struct gotd_imsgev *iev, int fd)
1634 const struct got_error *err;
1635 struct got_object_id id;
1638 memset(&id, 0, sizeof(id));
1639 memcpy(id.sha1, sha1, sizeof(id.sha1));
1641 err = got_object_id_str(&id_str, &id);
1645 dprintf(fd, "Removed %s: %s\n", refname, id_str);
1651 format_author(char *author)
1655 smallerthan = strchr(author, '<');
1656 if (smallerthan && smallerthan[1] != '\0')
1657 author = smallerthan + 1;
1658 author[strcspn(author, "@>")] = '\0';
1663 static const struct got_error *
1664 print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
1665 struct got_repository *repo, int fd)
1667 const struct got_error *err = NULL;
1668 char *id_str = NULL, *logmsg0 = NULL;
1670 char *committer = NULL, *author = NULL;
1671 time_t committer_time;
1673 err = got_object_id_str(&id_str, id);
1677 committer_time = got_object_commit_get_committer_time(commit);
1679 err = got_object_commit_get_logmsg(&logmsg0, commit);
1684 while (isspace((unsigned char)s[0]))
1687 nl = strchr(s, '\n');
1692 if (strcmp(got_object_commit_get_author(commit),
1693 got_object_commit_get_committer(commit)) != 0) {
1694 author = strdup(got_object_commit_get_author(commit));
1695 if (author == NULL) {
1696 err = got_error_from_errno("strdup");
1699 dprintf(fd, "%lld %.7s %.8s %s\n", (long long)committer_time,
1700 id_str, format_author(author), s);
1702 committer = strdup(got_object_commit_get_committer(commit));
1703 dprintf(fd, "%lld %.7s %.8s %s\n", (long long)committer_time,
1704 id_str, format_author(committer), s);
1707 if (fsync(fd) == -1 && err == NULL)
1708 err = got_error_from_errno("fsync");
1717 static const struct got_error *
1718 print_diffstat(struct got_diffstat_cb_arg *dsa, int fd)
1720 struct got_pathlist_entry *pe;
1722 TAILQ_FOREACH(pe, dsa->paths, entry) {
1723 struct got_diff_changed_path *cp = pe->data;
1724 int pad = dsa->max_path_len - pe->path_len + 1;
1726 dprintf(fd, " %c %s%*c | %*d+ %*d-\n", cp->status,
1727 pe->path, pad, ' ', dsa->add_cols + 1, cp->add,
1728 dsa->rm_cols + 1, cp->rm);
1731 "\n%d file%s changed, %d insertion%s(+), %d deletion%s(-)\n\n",
1732 dsa->nfiles, dsa->nfiles > 1 ? "s" : "", dsa->ins,
1733 dsa->ins != 1 ? "s" : "", dsa->del, dsa->del != 1 ? "s" : "");
1738 static const struct got_error *
1739 print_commit(struct got_commit_object *commit, struct got_object_id *id,
1740 struct got_repository *repo, struct got_pathlist_head *changed_paths,
1741 struct got_diffstat_cb_arg *diffstat, int fd)
1743 const struct got_error *err = NULL;
1744 char *id_str, *logmsg0, *logmsg, *line;
1745 time_t committer_time;
1746 const char *author, *committer;
1748 err = got_object_id_str(&id_str, id);
1752 dprintf(fd, "commit %s\n", id_str);
1755 dprintf(fd, "from: %s\n", got_object_commit_get_author(commit));
1756 author = got_object_commit_get_author(commit);
1757 committer = got_object_commit_get_committer(commit);
1758 if (strcmp(author, committer) != 0)
1759 dprintf(fd, "via: %s\n", committer);
1760 committer_time = got_object_commit_get_committer_time(commit);
1761 dprintf(fd, "date: %lld\n", (long long)committer_time);
1762 if (got_object_commit_get_nparents(commit) > 1) {
1763 const struct got_object_id_queue *parent_ids;
1764 struct got_object_qid *qid;
1766 parent_ids = got_object_commit_get_parent_ids(commit);
1767 STAILQ_FOREACH(qid, parent_ids, entry) {
1768 err = got_object_id_str(&id_str, &qid->id);
1771 dprintf(fd, "parent %d: %s\n", n++, id_str);
1777 err = got_object_commit_get_logmsg(&logmsg0, commit);
1781 dprintf(fd, "messagelen: %zu\n", strlen(logmsg0));
1785 line = strsep(&logmsg, "\n");
1787 dprintf(fd, " %s\n", line);
1791 err = print_diffstat(diffstat, fd);
1795 if (fsync(fd) == -1 && err == NULL)
1796 err = got_error_from_errno("fsync");
1802 static const struct got_error *
1803 get_changed_paths(struct got_pathlist_head *paths,
1804 struct got_commit_object *commit, struct got_repository *repo,
1805 struct got_diffstat_cb_arg *dsa)
1807 const struct got_error *err = NULL;
1808 struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
1809 struct got_tree_object *tree1 = NULL, *tree2 = NULL;
1810 struct got_object_qid *qid;
1811 got_diff_blob_cb cb = got_diff_tree_collect_changed_paths;
1812 FILE *f1 = repo_write.diff.f1, *f2 = repo_write.diff.f2;
1813 int fd1 = repo_write.diff.fd1, fd2 = repo_write.diff.fd2;
1816 cb = got_diff_tree_compute_diffstat;
1818 err = got_opentemp_truncate(f1);
1821 err = got_opentemp_truncate(f2);
1824 err = got_opentemp_truncatefd(fd1);
1827 err = got_opentemp_truncatefd(fd2);
1831 qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
1833 struct got_commit_object *pcommit;
1834 err = got_object_open_as_commit(&pcommit, repo,
1839 tree_id1 = got_object_id_dup(
1840 got_object_commit_get_tree_id(pcommit));
1841 if (tree_id1 == NULL) {
1842 got_object_commit_close(pcommit);
1843 return got_error_from_errno("got_object_id_dup");
1845 got_object_commit_close(pcommit);
1850 err = got_object_open_as_tree(&tree1, repo, tree_id1);
1855 tree_id2 = got_object_commit_get_tree_id(commit);
1856 err = got_object_open_as_tree(&tree2, repo, tree_id2);
1860 err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, "", "", repo,
1861 cb, dsa ? (void *)dsa : paths, dsa ? 1 : 0);
1864 got_object_tree_close(tree1);
1866 got_object_tree_close(tree2);
1871 static const struct got_error *
1872 print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
1873 struct got_repository *repo, int fd)
1875 const struct got_error *err;
1876 struct got_commit_graph *graph;
1877 struct got_object_id_queue reversed_commits;
1878 struct got_object_qid *qid;
1879 struct got_commit_object *commit = NULL;
1880 struct got_pathlist_head changed_paths;
1882 const int shortlog_threshold = 50;
1884 STAILQ_INIT(&reversed_commits);
1885 TAILQ_INIT(&changed_paths);
1887 /* XXX first-parent only for now */
1888 err = got_commit_graph_open(&graph, "/", 1);
1891 err = got_commit_graph_bfsort(graph, root_id, repo,
1892 check_cancelled, NULL);
1896 struct got_object_id id;
1898 err = got_commit_graph_iter_next(&id, graph, repo,
1899 check_cancelled, NULL);
1901 if (err->code == GOT_ERR_ITER_COMPLETED)
1906 err = got_object_open_as_commit(&commit, repo, &id);
1910 if (end_id && got_object_id_cmp(&id, end_id) == 0)
1913 err = got_object_qid_alloc(&qid, &id);
1917 STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
1919 got_object_commit_close(commit);
1925 STAILQ_FOREACH(qid, &reversed_commits, entry) {
1926 struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
1927 &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
1929 err = got_object_open_as_commit(&commit, repo, &qid->id);
1933 if (ncommits > shortlog_threshold) {
1934 err = print_commit_oneline(commit, &qid->id,
1939 err = get_changed_paths(&changed_paths, commit,
1943 err = print_commit(commit, &qid->id, repo,
1944 &changed_paths, &dsa, fd);
1946 got_object_commit_close(commit);
1948 got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
1952 got_object_commit_close(commit);
1953 while (!STAILQ_EMPTY(&reversed_commits)) {
1954 qid = STAILQ_FIRST(&reversed_commits);
1955 STAILQ_REMOVE_HEAD(&reversed_commits, entry);
1956 got_object_qid_free(qid);
1958 got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
1959 got_commit_graph_close(graph);
1963 static const struct got_error *
1964 print_tag(struct got_object_id *id,
1965 const char *refname, struct got_repository *repo, int fd)
1967 const struct got_error *err = NULL;
1968 struct got_tag_object *tag = NULL;
1969 const char *tagger = NULL;
1970 char *id_str = NULL, *tagmsg0 = NULL, *tagmsg, *line;
1973 err = got_object_open_as_tag(&tag, repo, id);
1977 tagger = got_object_tag_get_tagger(tag);
1978 tagger_time = got_object_tag_get_tagger_time(tag);
1979 err = got_object_id_str(&id_str,
1980 got_object_tag_get_object_id(tag));
1984 dprintf(fd, "tag %s\n", refname);
1985 dprintf(fd, "from: %s\n", tagger);
1986 dprintf(fd, "date: %lld\n", (long long)tagger_time);
1988 switch (got_object_tag_get_object_type(tag)) {
1989 case GOT_OBJ_TYPE_BLOB:
1990 dprintf(fd, "object: %s %s\n", GOT_OBJ_LABEL_BLOB, id_str);
1992 case GOT_OBJ_TYPE_TREE:
1993 dprintf(fd, "object: %s %s\n", GOT_OBJ_LABEL_TREE, id_str);
1995 case GOT_OBJ_TYPE_COMMIT:
1996 dprintf(fd, "object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
1998 case GOT_OBJ_TYPE_TAG:
1999 dprintf(fd, "object: %s %s\n", GOT_OBJ_LABEL_TAG, id_str);
2005 tagmsg0 = strdup(got_object_tag_get_message(tag));
2006 if (tagmsg0 == NULL) {
2007 err = got_error_from_errno("strdup");
2011 dprintf(fd, "messagelen: %zu\n", strlen(tagmsg0));
2015 line = strsep(&tagmsg, "\n");
2017 dprintf(fd, " %s\n", line);
2022 got_object_tag_close(tag);
2027 static const struct got_error *
2028 notify_changed_ref(const char *refname, uint8_t *old_sha1,
2029 uint8_t *new_sha1, struct gotd_imsgev *iev, int fd)
2031 const struct got_error *err;
2032 struct got_object_id old_id, new_id;
2033 int old_obj_type, new_obj_type;
2035 char *new_id_str = NULL;
2037 memset(&old_id, 0, sizeof(old_id));
2038 memcpy(old_id.sha1, old_sha1, sizeof(old_id.sha1));
2039 memset(&new_id, 0, sizeof(new_id));
2040 memcpy(new_id.sha1, new_sha1, sizeof(new_id.sha1));
2042 err = got_object_get_type(&old_obj_type, repo_write.repo, &old_id);
2046 err = got_object_get_type(&new_obj_type, repo_write.repo, &new_id);
2050 switch (new_obj_type) {
2051 case GOT_OBJ_TYPE_COMMIT:
2052 err = print_commits(&new_id,
2053 old_obj_type == GOT_OBJ_TYPE_COMMIT ? &old_id : NULL,
2054 repo_write.repo, fd);
2056 case GOT_OBJ_TYPE_TAG:
2057 err = print_tag(&new_id, refname, repo_write.repo, fd);
2060 err = got_object_type_label(&label, new_obj_type);
2063 err = got_object_id_str(&new_id_str, &new_id);
2066 dprintf(fd, "%s: %s object %s\n", refname, label, new_id_str);
2074 static const struct got_error *
2075 notify_created_ref(const char *refname, uint8_t *sha1,
2076 struct gotd_imsgev *iev, int fd)
2078 const struct got_error *err;
2079 struct got_object_id id;
2082 memset(&id, 0, sizeof(id));
2083 memcpy(id.sha1, sha1, sizeof(id.sha1));
2085 err = got_object_get_type(&obj_type, repo_write.repo, &id);
2089 if (obj_type == GOT_OBJ_TYPE_TAG)
2090 return print_tag(&id, refname, repo_write.repo, fd);
2092 return print_commits(&id, NULL, repo_write.repo, fd);
2095 static const struct got_error *
2096 render_notification(struct imsg *imsg, struct gotd_imsgev *iev)
2098 const struct got_error *err = NULL;
2099 struct gotd_imsg_notification_content ireq;
2100 size_t datalen, len;
2101 char *refname = NULL;
2105 fd = imsg_get_fd(imsg);
2107 return got_error(GOT_ERR_PRIVSEP_NO_FD);
2109 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2110 if (datalen < sizeof(ireq)) {
2111 err = got_error(GOT_ERR_PRIVSEP_LEN);
2115 memcpy(&ireq, imsg->data, sizeof(ireq));
2117 if (datalen != sizeof(ireq) + ireq.refname_len) {
2118 err = got_error(GOT_ERR_PRIVSEP_LEN);
2122 refname = strndup(imsg->data + sizeof(ireq), ireq.refname_len);
2123 if (refname == NULL) {
2124 err = got_error_from_errno("strndup");
2128 switch (ireq.action) {
2129 case GOTD_NOTIF_ACTION_CREATED:
2130 err = notify_created_ref(refname, ireq.new_id, iev, fd);
2132 case GOTD_NOTIF_ACTION_REMOVED:
2133 err = notify_removed_ref(refname, ireq.old_id, iev, fd);
2135 case GOTD_NOTIF_ACTION_CHANGED:
2136 err = notify_changed_ref(refname, ireq.old_id, ireq.new_id,
2143 if (fsync(fd) == -1) {
2144 err = got_error_from_errno("fsync");
2148 len = sizeof(ireq) + ireq.refname_len;
2149 wbuf = imsg_create(&iev->ibuf, GOTD_IMSG_NOTIFY, PROC_REPO_WRITE,
2150 repo_write.pid, len);
2152 err = got_error_from_errno("imsg_create REF");
2155 if (imsg_add(wbuf, &ireq, sizeof(ireq)) == -1) {
2156 err = got_error_from_errno("imsg_add NOTIFY");
2159 if (imsg_add(wbuf, refname, ireq.refname_len) == -1) {
2160 err = got_error_from_errno("imsg_add NOTIFY");
2164 imsg_close(&iev->ibuf, wbuf);
2165 gotd_imsg_event_add(iev);
2168 if (fd != -1 && close(fd) == -1 && err == NULL)
2169 err = got_error_from_errno("close");
2174 repo_write_dispatch_session(int fd, short event, void *arg)
2176 const struct got_error *err = NULL;
2177 struct gotd_imsgev *iev = arg;
2178 struct imsgbuf *ibuf = &iev->ibuf;
2180 struct repo_write_client *client = &repo_write_client;
2182 int shut = 0, have_packfile = 0;
2184 if (event & EV_READ) {
2185 if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
2186 fatal("imsg_read error");
2187 if (n == 0) /* Connection closed. */
2191 if (event & EV_WRITE) {
2192 n = msgbuf_write(&ibuf->w);
2193 if (n == -1 && errno != EAGAIN)
2194 fatal("msgbuf_write");
2195 if (n == 0) /* Connection closed. */
2200 if ((n = imsg_get(ibuf, &imsg)) == -1)
2201 fatal("%s: imsg_get error", __func__);
2202 if (n == 0) /* No more messages. */
2205 if (imsg.hdr.type != GOTD_IMSG_LIST_REFS_INTERNAL &&
2206 !repo_write.refs_listed) {
2207 err = got_error(GOT_ERR_PRIVSEP_MSG);
2211 switch (imsg.hdr.type) {
2212 case GOTD_IMSG_LIST_REFS_INTERNAL:
2213 err = list_refs(&imsg);
2215 log_warnx("ls-refs: %s", err->msg);
2217 case GOTD_IMSG_REF_UPDATE:
2218 err = recv_ref_update(&imsg);
2220 log_warnx("ref-update: %s", err->msg);
2222 case GOTD_IMSG_PACKFILE_PIPE:
2223 err = receive_pack_pipe(&imsg, iev);
2225 log_warnx("receiving pack pipe: %s", err->msg);
2229 case GOTD_IMSG_PACKIDX_FILE:
2230 err = receive_pack_idx(&imsg, iev);
2232 log_warnx("receiving pack index: %s",
2237 case GOTD_IMSG_RECV_PACKFILE:
2238 err = protect_refs_from_deletion();
2241 err = recv_packfile(&have_packfile, &imsg);
2243 log_warnx("receive packfile: %s", err->msg);
2246 if (have_packfile) {
2247 err = verify_packfile();
2249 log_warnx("verify packfile: %s",
2253 err = install_packfile(iev);
2255 log_warnx("install packfile: %s",
2260 * Ensure we re-read the pack index list
2263 repo_write.repo->pack_path_mtime.tv_sec = 0;
2264 repo_write.repo->pack_path_mtime.tv_nsec = 0;
2266 err = update_refs(iev);
2268 log_warnx("update refs: %s", err->msg);
2271 case GOTD_IMSG_NOTIFY:
2272 err = render_notification(&imsg, iev);
2274 log_warnx("render notification: %s", err->msg);
2279 log_debug("unexpected imsg %d", imsg.hdr.type);
2286 if (!shut && check_cancelled(NULL) == NULL) {
2288 gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
2289 client->id, err) == -1) {
2290 log_warnx("could not send error to parent: %s",
2293 gotd_imsg_event_add(iev);
2295 /* This pipe is dead. Remove its event handler */
2296 event_del(&iev->ev);
2297 event_loopexit(NULL);
2301 static const struct got_error *
2302 recv_connect(struct imsg *imsg)
2304 struct gotd_imsgev *iev = &repo_write.session_iev;
2307 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
2309 return got_error(GOT_ERR_PRIVSEP_LEN);
2311 if (repo_write.session_fd != -1)
2312 return got_error(GOT_ERR_PRIVSEP_MSG);
2314 repo_write.session_fd = imsg_get_fd(imsg);
2315 if (repo_write.session_fd == -1)
2316 return got_error(GOT_ERR_PRIVSEP_NO_FD);
2318 imsg_init(&iev->ibuf, repo_write.session_fd);
2319 iev->handler = repo_write_dispatch_session;
2320 iev->events = EV_READ;
2321 iev->handler_arg = NULL;
2322 event_set(&iev->ev, iev->ibuf.fd, EV_READ,
2323 repo_write_dispatch_session, iev);
2324 gotd_imsg_event_add(iev);
2330 repo_write_dispatch(int fd, short event, void *arg)
2332 const struct got_error *err = NULL;
2333 struct gotd_imsgev *iev = arg;
2334 struct imsgbuf *ibuf = &iev->ibuf;
2338 struct repo_write_client *client = &repo_write_client;
2340 if (event & EV_READ) {
2341 if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
2342 fatal("imsg_read error");
2343 if (n == 0) /* Connection closed. */
2347 if (event & EV_WRITE) {
2348 n = msgbuf_write(&ibuf->w);
2349 if (n == -1 && errno != EAGAIN)
2350 fatal("msgbuf_write");
2351 if (n == 0) /* Connection closed. */
2355 while (err == NULL && check_cancelled(NULL) == NULL) {
2356 if ((n = imsg_get(ibuf, &imsg)) == -1)
2357 fatal("%s: imsg_get", __func__);
2358 if (n == 0) /* No more messages. */
2361 switch (imsg.hdr.type) {
2362 case GOTD_IMSG_CONNECT_REPO_CHILD:
2363 err = recv_connect(&imsg);
2366 log_debug("unexpected imsg %d", imsg.hdr.type);
2373 if (!shut && check_cancelled(NULL) == NULL) {
2375 gotd_imsg_send_error_event(iev, PROC_REPO_WRITE,
2376 client->id, err) == -1) {
2377 log_warnx("could not send error to parent: %s",
2380 gotd_imsg_event_add(iev);
2382 /* This pipe is dead. Remove its event handler */
2383 event_del(&iev->ev);
2384 event_loopexit(NULL);
2389 repo_write_main(const char *title, const char *repo_path,
2390 int *pack_fds, int *temp_fds,
2391 FILE *diff_f1, FILE *diff_f2, int diff_fd1, int diff_fd2,
2392 struct got_pathlist_head *protected_tag_namespaces,
2393 struct got_pathlist_head *protected_branch_namespaces,
2394 struct got_pathlist_head *protected_branches)
2396 const struct got_error *err = NULL;
2397 struct repo_write_client *client = &repo_write_client;
2398 struct gotd_imsgev iev;
2401 client->pack_pipe = -1;
2402 client->packidx_fd = -1;
2403 client->pack.fd = -1;
2405 repo_write.title = title;
2406 repo_write.pid = getpid();
2407 repo_write.pack_fds = pack_fds;
2408 repo_write.temp_fds = temp_fds;
2409 repo_write.session_fd = -1;
2410 repo_write.session_iev.ibuf.fd = -1;
2411 repo_write.protected_tag_namespaces = protected_tag_namespaces;
2412 repo_write.protected_branch_namespaces = protected_branch_namespaces;
2413 repo_write.protected_branches = protected_branches;
2414 repo_write.diff.f1 = diff_f1;
2415 repo_write.diff.f2 = diff_f2;
2416 repo_write.diff.fd1 = diff_fd1;
2417 repo_write.diff.fd2 = diff_fd2;
2419 STAILQ_INIT(&repo_write_client.ref_updates);
2421 err = got_repo_open(&repo_write.repo, repo_path, NULL, pack_fds);
2424 if (!got_repo_is_bare(repo_write.repo)) {
2425 err = got_error_msg(GOT_ERR_NOT_GIT_REPO,
2426 "bare git repository required");
2430 got_repo_temp_fds_set(repo_write.repo, temp_fds);
2432 signal(SIGINT, catch_sigint);
2433 signal(SIGTERM, catch_sigterm);
2434 signal(SIGPIPE, SIG_IGN);
2435 signal(SIGHUP, SIG_IGN);
2437 imsg_init(&iev.ibuf, GOTD_FILENO_MSG_PIPE);
2438 iev.handler = repo_write_dispatch;
2439 iev.events = EV_READ;
2440 iev.handler_arg = NULL;
2441 event_set(&iev.ev, iev.ibuf.fd, EV_READ, repo_write_dispatch, &iev);
2442 if (gotd_imsg_compose_event(&iev, GOTD_IMSG_REPO_CHILD_READY,
2443 PROC_REPO_WRITE, -1, NULL, 0) == -1) {
2444 err = got_error_from_errno("imsg compose REPO_CHILD_READY");
2450 if (fclose(diff_f1) == EOF && err == NULL)
2451 err = got_error_from_errno("fclose");
2452 if (fclose(diff_f2) == EOF && err == NULL)
2453 err = got_error_from_errno("fclose");
2454 if (close(diff_fd1) == -1 && err == NULL)
2455 err = got_error_from_errno("close");
2456 if (close(diff_fd2) == -1 && err == NULL)
2457 err = got_error_from_errno("close");
2459 log_warnx("%s: %s", title, err->msg);
2460 repo_write_shutdown();
2464 repo_write_shutdown(void)
2466 struct repo_write_client *client = &repo_write_client;
2467 struct gotd_ref_update *ref_update;
2469 log_debug("%s: shutting down", repo_write.title);
2471 while (!STAILQ_EMPTY(&client->ref_updates)) {
2472 ref_update = STAILQ_FIRST(&client->ref_updates);
2473 STAILQ_REMOVE_HEAD(&client->ref_updates, entry);
2474 got_ref_close(ref_update->ref);
2478 got_pack_close(&client->pack);
2479 if (client->fd != -1)
2481 if (client->pack_pipe != -1)
2482 close(client->pack_pipe);
2483 if (client->packidx_fd != -1)
2484 close(client->packidx_fd);
2486 if (repo_write.repo)
2487 got_repo_close(repo_write.repo);
2488 got_repo_pack_fds_close(repo_write.pack_fds);
2489 got_repo_temp_fds_close(repo_write.temp_fds);
2490 if (repo_write.session_fd != -1)
2491 close(repo_write.session_fd);