2 * Copyright (c) 2018, 2019, 2020 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 <sys/types.h>
18 #include <sys/queue.h>
34 #include "got_error.h"
35 #include "got_object.h"
38 #include "got_lib_delta.h"
39 #include "got_lib_delta_cache.h"
40 #include "got_lib_object.h"
41 #include "got_lib_object_cache.h"
42 #include "got_lib_object_parse.h"
43 #include "got_lib_object_idset.h"
44 #include "got_lib_privsep.h"
45 #include "got_lib_pack.h"
47 static volatile sig_atomic_t sigint_received;
50 catch_sigint(int signo)
55 static const struct got_error *
56 open_object(struct got_object **obj, struct got_pack *pack,
57 struct got_packidx *packidx, int idx, struct got_object_id *id,
58 struct got_object_cache *objcache)
60 const struct got_error *err;
62 err = got_packfile_open_object(obj, pack, packidx, idx, id);
67 err = got_object_cache_add(objcache, id, *obj);
69 if (err->code == GOT_ERR_OBJ_EXISTS ||
70 err->code == GOT_ERR_OBJ_TOO_LARGE)
78 static const struct got_error *
79 object_request(struct imsg *imsg, struct imsgbuf *ibuf, struct got_pack *pack,
80 struct got_packidx *packidx, struct got_object_cache *objcache)
82 const struct got_error *err = NULL;
83 struct got_imsg_packed_object iobj;
84 struct got_object *obj;
85 struct got_object_id id;
88 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
89 if (datalen != sizeof(iobj))
90 return got_error(GOT_ERR_PRIVSEP_LEN);
91 memcpy(&iobj, imsg->data, sizeof(iobj));
92 memcpy(id.sha1, iobj.id, SHA1_DIGEST_LENGTH);
94 obj = got_object_cache_get(objcache, &id);
98 err = open_object(&obj, pack, packidx, iobj.idx, &id,
104 err = got_privsep_send_obj(ibuf, obj);
106 got_object_close(obj);
110 static const struct got_error *
111 open_commit(struct got_commit_object **commit, struct got_pack *pack,
112 struct got_packidx *packidx, int obj_idx, struct got_object_id *id,
113 struct got_object_cache *objcache)
115 const struct got_error *err = NULL;
116 struct got_object *obj = NULL;
122 obj = got_object_cache_get(objcache, id);
126 err = open_object(&obj, pack, packidx, obj_idx, id,
132 err = got_packfile_extract_object_to_mem(&buf, &len, obj, pack);
138 err = got_object_parse_commit(commit, buf, len);
140 got_object_close(obj);
145 static const struct got_error *
146 commit_request(struct imsg *imsg, struct imsgbuf *ibuf, struct got_pack *pack,
147 struct got_packidx *packidx, struct got_object_cache *objcache)
149 const struct got_error *err = NULL;
150 struct got_imsg_packed_object iobj;
151 struct got_commit_object *commit = NULL;
152 struct got_object_id id;
155 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
156 if (datalen != sizeof(iobj))
157 return got_error(GOT_ERR_PRIVSEP_LEN);
158 memcpy(&iobj, imsg->data, sizeof(iobj));
159 memcpy(id.sha1, iobj.id, SHA1_DIGEST_LENGTH);
161 err = open_commit(&commit, pack, packidx, iobj.idx, &id, objcache);
165 err = got_privsep_send_commit(ibuf, commit);
168 got_object_commit_close(commit);
170 if (err->code == GOT_ERR_PRIVSEP_PIPE)
173 got_privsep_send_error(ibuf, err);
179 static const struct got_error *
180 open_tree(uint8_t **buf, struct got_parsed_tree_entry **entries, int *nentries,
181 struct got_pack *pack, struct got_packidx *packidx, int obj_idx,
182 struct got_object_id *id, struct got_object_cache *objcache)
184 const struct got_error *err = NULL;
185 struct got_object *obj = NULL;
191 obj = got_object_cache_get(objcache, id);
195 err = open_object(&obj, pack, packidx, obj_idx, id,
201 err = got_packfile_extract_object_to_mem(buf, &len, obj, pack);
207 err = got_object_parse_tree(entries, nentries, *buf, len);
209 got_object_close(obj);
217 static const struct got_error *
218 tree_request(struct imsg *imsg, struct imsgbuf *ibuf, struct got_pack *pack,
219 struct got_packidx *packidx, struct got_object_cache *objcache)
221 const struct got_error *err = NULL;
222 struct got_imsg_packed_object iobj;
223 struct got_parsed_tree_entry *entries = NULL;
226 struct got_object_id id;
229 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
230 if (datalen != sizeof(iobj))
231 return got_error(GOT_ERR_PRIVSEP_LEN);
232 memcpy(&iobj, imsg->data, sizeof(iobj));
233 memcpy(id.sha1, iobj.id, SHA1_DIGEST_LENGTH);
235 err = open_tree(&buf, &entries, &nentries, pack, packidx, iobj.idx,
240 err = got_privsep_send_tree(ibuf, entries, nentries);
244 if (err->code == GOT_ERR_PRIVSEP_PIPE)
247 got_privsep_send_error(ibuf, err);
253 static const struct got_error *
254 receive_file(FILE **f, struct imsgbuf *ibuf, uint32_t imsg_code)
256 const struct got_error *err;
260 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
264 if (imsg.hdr.type != imsg_code) {
265 err = got_error(GOT_ERR_PRIVSEP_MSG);
269 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
271 err = got_error(GOT_ERR_PRIVSEP_LEN);
275 err = got_error(GOT_ERR_PRIVSEP_NO_FD);
279 *f = fdopen(imsg.fd, "w+");
281 err = got_error_from_errno("fdopen");
290 static const struct got_error *
291 receive_tempfile(FILE **f, const char *mode, struct imsg *imsg,
292 struct imsgbuf *ibuf)
296 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
298 return got_error(GOT_ERR_PRIVSEP_LEN);
301 return got_error(GOT_ERR_PRIVSEP_NO_FD);
303 *f = fdopen(imsg->fd, mode);
305 return got_error_from_errno("fdopen");
311 static const struct got_error *
312 blob_request(struct imsg *imsg, struct imsgbuf *ibuf, struct got_pack *pack,
313 struct got_packidx *packidx, struct got_object_cache *objcache,
314 FILE *basefile, FILE *accumfile)
316 const struct got_error *err = NULL;
317 struct got_imsg_packed_object iobj;
318 struct got_object *obj = NULL;
319 FILE *outfile = NULL;
320 struct got_object_id id;
325 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
326 if (datalen != sizeof(iobj))
327 return got_error(GOT_ERR_PRIVSEP_LEN);
328 memcpy(&iobj, imsg->data, sizeof(iobj));
329 memcpy(id.sha1, iobj.id, SHA1_DIGEST_LENGTH);
331 obj = got_object_cache_get(objcache, &id);
335 err = open_object(&obj, pack, packidx, iobj.idx, &id,
341 err = receive_file(&outfile, ibuf, GOT_IMSG_BLOB_OUTFD);
345 if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
346 err = got_pack_get_max_delta_object_size(&blob_size, obj, pack);
350 blob_size = obj->size;
352 if (blob_size <= GOT_PRIVSEP_INLINE_BLOB_DATA_MAX)
353 err = got_packfile_extract_object_to_mem(&buf, &obj->size,
356 err = got_packfile_extract_object(pack, obj, outfile, basefile,
361 err = got_privsep_send_blob(ibuf, obj->size, obj->hdrlen, buf);
364 if (outfile && fclose(outfile) == EOF && err == NULL)
365 err = got_error_from_errno("fclose");
366 got_object_close(obj);
367 if (err && err->code != GOT_ERR_PRIVSEP_PIPE)
368 got_privsep_send_error(ibuf, err);
373 static const struct got_error *
374 tag_request(struct imsg *imsg, struct imsgbuf *ibuf, struct got_pack *pack,
375 struct got_packidx *packidx, struct got_object_cache *objcache)
377 const struct got_error *err = NULL;
378 struct got_imsg_packed_object iobj;
379 struct got_object *obj = NULL;
380 struct got_tag_object *tag = NULL;
383 struct got_object_id id;
386 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
387 if (datalen != sizeof(iobj))
388 return got_error(GOT_ERR_PRIVSEP_LEN);
389 memcpy(&iobj, imsg->data, sizeof(iobj));
390 memcpy(id.sha1, iobj.id, SHA1_DIGEST_LENGTH);
392 obj = got_object_cache_get(objcache, &id);
396 err = open_object(&obj, pack, packidx, iobj.idx, &id,
402 err = got_packfile_extract_object_to_mem(&buf, &len, obj, pack);
407 err = got_object_parse_tag(&tag, buf, len);
411 err = got_privsep_send_tag(ibuf, tag);
414 got_object_close(obj);
416 got_object_tag_close(tag);
418 if (err->code == GOT_ERR_PRIVSEP_PIPE)
421 got_privsep_send_error(ibuf, err);
427 static struct got_parsed_tree_entry *
428 find_entry_by_name(struct got_parsed_tree_entry *entries, int nentries,
429 const char *name, size_t len)
431 struct got_parsed_tree_entry *pte;
434 /* Note that tree entries are sorted in strncmp() order. */
435 for (i = 0; i < nentries; i++) {
437 cmp = strncmp(pte->name, name, len);
442 if (pte->name[len] == '\0')
448 static const struct got_error *
449 tree_path_changed(int *changed, uint8_t **buf1, uint8_t **buf2,
450 struct got_parsed_tree_entry **entries1, int *nentries1,
451 struct got_parsed_tree_entry **entries2, int *nentries2,
452 const char *path, struct got_pack *pack, struct got_packidx *packidx,
453 struct imsgbuf *ibuf, struct got_object_cache *objcache)
455 const struct got_error *err = NULL;
456 struct got_parsed_tree_entry *pte1 = NULL, *pte2 = NULL;
462 /* We not do support comparing the root path. */
463 if (got_path_is_root_dir(path))
464 return got_error_path(path, GOT_ERR_BAD_PATH);
479 pte1 = find_entry_by_name(*entries1, *nentries1, seg, seglen);
481 err = got_error(GOT_ERR_NO_OBJ);
485 pte2 = find_entry_by_name(*entries2, *nentries2, seg, seglen);
491 if (pte1->mode != pte2->mode) {
496 if (memcmp(pte1->id, pte2->id, SHA1_DIGEST_LENGTH) == 0) {
501 if (*s == '\0') { /* final path element */
510 struct got_object_id id1, id2;
513 memcpy(id1.sha1, pte1->id, SHA1_DIGEST_LENGTH);
514 idx = got_packidx_get_object_idx(packidx, &id1);
516 err = got_error_no_obj(&id1);
523 err = open_tree(buf1, entries1, nentries1, pack,
524 packidx, idx, &id1, objcache);
529 memcpy(id2.sha1, pte2->id, SHA1_DIGEST_LENGTH);
530 idx = got_packidx_get_object_idx(packidx, &id2);
532 err = got_error_no_obj(&id2);
539 err = open_tree(buf2, entries2, nentries2, pack,
540 packidx, idx, &id2, objcache);
550 static const struct got_error *
551 send_traversed_commits(struct got_object_id *commit_ids, size_t ncommits,
552 struct imsgbuf *ibuf)
557 wbuf = imsg_create(ibuf, GOT_IMSG_TRAVERSED_COMMITS, 0, 0,
558 sizeof(struct got_imsg_traversed_commits) +
559 ncommits * SHA1_DIGEST_LENGTH);
561 return got_error_from_errno("imsg_create TRAVERSED_COMMITS");
563 if (imsg_add(wbuf, &ncommits, sizeof(ncommits)) == -1)
564 return got_error_from_errno("imsg_add TRAVERSED_COMMITS");
566 for (i = 0; i < ncommits; i++) {
567 struct got_object_id *id = &commit_ids[i];
568 if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1) {
569 return got_error_from_errno(
570 "imsg_add TRAVERSED_COMMITS");
575 imsg_close(ibuf, wbuf);
577 return got_privsep_flush_imsg(ibuf);
580 static const struct got_error *
581 send_commit_traversal_done(struct imsgbuf *ibuf)
583 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_TRAVERSAL_DONE, 0, 0, -1,
585 return got_error_from_errno("imsg_compose TRAVERSAL_DONE");
587 return got_privsep_flush_imsg(ibuf);
591 static const struct got_error *
592 commit_traversal_request(struct imsg *imsg, struct imsgbuf *ibuf,
593 struct got_pack *pack, struct got_packidx *packidx,
594 struct got_object_cache *objcache)
596 const struct got_error *err = NULL;
597 struct got_imsg_packed_object iobj;
598 struct got_object_qid *pid;
599 struct got_commit_object *commit = NULL, *pcommit = NULL;
600 struct got_parsed_tree_entry *entries = NULL, *pentries = NULL;
601 int nentries = 0, pnentries = 0;
602 struct got_object_id id;
603 size_t datalen, path_len;
605 const int min_alloc = 64;
606 int changed = 0, ncommits = 0, nallocated = 0;
607 struct got_object_id *commit_ids = NULL;
609 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
610 if (datalen < sizeof(iobj))
611 return got_error(GOT_ERR_PRIVSEP_LEN);
612 memcpy(&iobj, imsg->data, sizeof(iobj));
613 memcpy(id.sha1, iobj.id, SHA1_DIGEST_LENGTH);
615 path_len = datalen - sizeof(iobj) - 1;
617 return got_error(GOT_ERR_PRIVSEP_LEN);
619 path = imsg->data + sizeof(iobj);
620 if (path[path_len] != '\0')
621 return got_error(GOT_ERR_PRIVSEP_LEN);
624 nallocated = min_alloc;
625 commit_ids = reallocarray(NULL, nallocated, sizeof(*commit_ids));
626 if (commit_ids == NULL)
627 return got_error_from_errno("reallocarray");
630 const size_t max_datalen = MAX_IMSGSIZE - IMSG_HEADER_SIZE;
633 if (sigint_received) {
634 err = got_error(GOT_ERR_CANCELLED);
638 if (commit == NULL) {
639 idx = got_packidx_get_object_idx(packidx, &id);
642 err = open_commit(&commit, pack, packidx,
645 if (err->code != GOT_ERR_NO_OBJ)
652 if (sizeof(struct got_imsg_traversed_commits) +
653 ncommits * SHA1_DIGEST_LENGTH >= max_datalen) {
654 err = send_traversed_commits(commit_ids, ncommits,
661 if (ncommits > nallocated) {
662 struct got_object_id *new;
663 nallocated += min_alloc;
664 new = reallocarray(commit_ids, nallocated,
665 sizeof(*commit_ids));
667 err = got_error_from_errno("reallocarray");
672 memcpy(commit_ids[ncommits - 1].sha1, id.sha1,
675 pid = STAILQ_FIRST(&commit->parent_ids);
679 idx = got_packidx_get_object_idx(packidx, &pid->id);
683 err = open_commit(&pcommit, pack, packidx, idx, &pid->id,
686 if (err->code != GOT_ERR_NO_OBJ)
692 if (path[0] == '/' && path[1] == '\0') {
693 if (got_object_id_cmp(pcommit->tree_id,
694 commit->tree_id) != 0) {
700 uint8_t *buf = NULL, *pbuf = NULL;
702 idx = got_packidx_get_object_idx(packidx,
706 pidx = got_packidx_get_object_idx(packidx,
711 err = open_tree(&buf, &entries, &nentries, pack,
712 packidx, idx, commit->tree_id, objcache);
715 err = open_tree(&pbuf, &pentries, &pnentries, pack,
716 packidx, pidx, pcommit->tree_id, objcache);
722 err = tree_path_changed(&changed, &buf, &pbuf,
723 &entries, &nentries, &pentries, &pnentries, path,
724 pack, packidx, ibuf, objcache);
735 if (err->code != GOT_ERR_NO_OBJ)
743 memcpy(id.sha1, pid->id.sha1, SHA1_DIGEST_LENGTH);
744 got_object_commit_close(commit);
751 err = send_traversed_commits(commit_ids, ncommits, ibuf);
756 err = got_privsep_send_commit(ibuf, commit);
761 err = send_commit_traversal_done(ibuf);
765 got_object_commit_close(commit);
767 got_object_commit_close(pcommit);
771 if (err->code == GOT_ERR_PRIVSEP_PIPE)
774 got_privsep_send_error(ibuf, err);
780 static const struct got_error *
781 raw_object_request(struct imsg *imsg, struct imsgbuf *ibuf,
782 struct got_pack *pack, struct got_packidx *packidx,
783 struct got_object_cache *objcache, FILE *basefile, FILE *accumfile)
785 const struct got_error *err = NULL;
788 FILE *outfile = NULL;
789 struct got_imsg_packed_object iobj;
790 struct got_object *obj;
791 struct got_object_id id;
794 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
795 if (datalen != sizeof(iobj))
796 return got_error(GOT_ERR_PRIVSEP_LEN);
797 memcpy(&iobj, imsg->data, sizeof(iobj));
798 memcpy(id.sha1, iobj.id, SHA1_DIGEST_LENGTH);
800 obj = got_object_cache_get(objcache, &id);
804 err = open_object(&obj, pack, packidx, iobj.idx, &id,
810 err = receive_file(&outfile, ibuf, GOT_IMSG_RAW_OBJECT_OUTFD);
814 if (obj->flags & GOT_OBJ_FLAG_DELTIFIED) {
815 err = got_pack_get_max_delta_object_size(&size, obj, pack);
821 if (size <= GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX)
822 err = got_packfile_extract_object_to_mem(&buf, &obj->size,
825 err = got_packfile_extract_object(pack, obj, outfile, basefile,
830 err = got_privsep_send_raw_obj(ibuf, obj->size, obj->hdrlen, buf);
833 if (outfile && fclose(outfile) == EOF && err == NULL)
834 err = got_error_from_errno("fclose");
835 got_object_close(obj);
836 if (err && err->code != GOT_ERR_PRIVSEP_PIPE)
837 got_privsep_send_error(ibuf, err);
842 static const struct got_error *
843 get_base_object_id(struct got_object_id *base_id, struct got_packidx *packidx,
846 const struct got_error *err;
849 err = got_packidx_get_offset_idx(&idx, packidx, base_offset);
853 return got_error(GOT_ERR_BAD_PACKIDX);
855 return got_packidx_get_object_id(base_id, packidx, idx);
858 static const struct got_error *
859 raw_delta_request(struct imsg *imsg, struct imsgbuf *ibuf,
860 FILE *delta_outfile, struct got_pack *pack,
861 struct got_packidx *packidx)
863 const struct got_error *err = NULL;
864 struct got_imsg_raw_delta_request req;
865 size_t datalen, delta_size, delta_compressed_size;
867 uint8_t *delta_buf = NULL;
868 struct got_object_id id, base_id;
869 off_t base_offset, delta_out_offset = 0;
870 uint64_t base_size = 0, result_size = 0;
873 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
874 if (datalen != sizeof(req))
875 return got_error(GOT_ERR_PRIVSEP_LEN);
876 memcpy(&req, imsg->data, sizeof(req));
877 memcpy(id.sha1, req.id, SHA1_DIGEST_LENGTH);
881 err = got_packfile_extract_raw_delta(&delta_buf, &delta_size,
882 &delta_compressed_size, &delta_offset, &base_offset, &base_id,
883 &base_size, &result_size, pack, packidx, req.idx);
888 * If this is an offset delta we must determine the base
889 * object ID ourselves.
891 if (base_offset != 0) {
892 err = get_base_object_id(&base_id, packidx, base_offset);
897 delta_out_offset = ftello(delta_outfile);
898 w = fwrite(delta_buf, 1, delta_compressed_size, delta_outfile);
899 if (w != delta_compressed_size) {
900 err = got_ferror(delta_outfile, GOT_ERR_IO);
903 if (fflush(delta_outfile) == -1) {
904 err = got_error_from_errno("fflush");
908 err = got_privsep_send_raw_delta(ibuf, base_size, result_size,
909 delta_size, delta_compressed_size, delta_offset, delta_out_offset,
916 struct search_deltas_arg {
917 struct imsgbuf *ibuf;
918 struct got_packidx *packidx;
919 struct got_pack *pack;
920 struct got_object_idset *idset;
922 struct got_imsg_reused_delta deltas[GOT_IMSG_REUSED_DELTAS_MAX_NDELTAS];
926 static const struct got_error *
927 search_delta_for_object(struct got_object_id *id, void *data, void *arg)
929 const struct got_error *err;
930 struct search_deltas_arg *a = arg;
932 uint8_t *delta_buf = NULL;
933 uint64_t base_size, result_size;
934 size_t delta_size, delta_compressed_size;
935 off_t delta_offset, base_offset;
936 struct got_object_id base_id;
939 return got_error(GOT_ERR_CANCELLED);
941 obj_idx = got_packidx_get_object_idx(a->packidx, id);
943 return NULL; /* object not present in our pack file */
945 err = got_packfile_extract_raw_delta(&delta_buf, &delta_size,
946 &delta_compressed_size, &delta_offset, &base_offset, &base_id,
947 &base_size, &result_size, a->pack, a->packidx, obj_idx);
949 if (err->code == GOT_ERR_OBJ_TYPE)
950 return NULL; /* object not stored as a delta */
955 * If this is an offset delta we must determine the base
956 * object ID ourselves.
958 if (base_offset != 0) {
959 err = get_base_object_id(&base_id, a->packidx, base_offset);
964 if (got_object_idset_contains(a->idset, &base_id)) {
965 struct got_imsg_reused_delta *delta;
966 off_t delta_out_offset = ftello(a->delta_outfile);
969 w = fwrite(delta_buf, 1, delta_compressed_size,
971 if (w != delta_compressed_size) {
972 err = got_ferror(a->delta_outfile, GOT_ERR_IO);
976 delta = &a->deltas[a->ndeltas++];
977 memcpy(&delta->id, id, sizeof(delta->id));
978 memcpy(&delta->base_id, &base_id, sizeof(delta->base_id));
979 delta->base_size = base_size;
980 delta->result_size = result_size;
981 delta->delta_size = delta_size;
982 delta->delta_compressed_size = delta_compressed_size;
983 delta->delta_offset = delta_offset;
984 delta->delta_out_offset = delta_out_offset;
986 if (a->ndeltas >= GOT_IMSG_REUSED_DELTAS_MAX_NDELTAS) {
987 err = got_privsep_send_reused_deltas(a->ibuf,
988 a->deltas, a->ndeltas);
999 static const struct got_error *
1000 recv_object_ids(struct got_object_idset *idset, struct imsgbuf *ibuf)
1002 const struct got_error *err = NULL;
1004 struct got_object_id *ids;
1008 err = got_privsep_recv_object_idlist(&done, &ids, &nids, ibuf);
1011 for (i = 0; i < nids; i++) {
1012 err = got_object_idset_add(idset, &ids[i], NULL);
1024 static const struct got_error *
1025 delta_reuse_request(struct imsg *imsg, struct imsgbuf *ibuf,
1026 FILE *delta_outfile, struct got_pack *pack, struct got_packidx *packidx)
1028 const struct got_error *err = NULL;
1029 struct got_object_idset *idset;
1030 struct search_deltas_arg sda;
1032 idset = got_object_idset_alloc();
1034 return got_error_from_errno("got_object_idset_alloc");
1036 err = recv_object_ids(idset, ibuf);
1040 memset(&sda, 0, sizeof(sda));
1044 sda.packidx = packidx;
1045 sda.delta_outfile = delta_outfile;
1046 err = got_object_idset_for_each(idset, search_delta_for_object, &sda);
1050 if (sda.ndeltas > 0) {
1051 err = got_privsep_send_reused_deltas(ibuf, sda.deltas,
1057 if (fflush(delta_outfile) == -1) {
1058 err = got_error_from_errno("fflush");
1062 err = got_privsep_send_reused_deltas_done(ibuf);
1064 got_object_idset_free(idset);
1068 static const struct got_error *
1069 receive_packidx(struct got_packidx **packidx, struct imsgbuf *ibuf)
1071 const struct got_error *err = NULL;
1073 struct got_imsg_packidx ipackidx;
1075 struct got_packidx *p;
1079 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1083 p = calloc(1, sizeof(*p));
1085 err = got_error_from_errno("calloc");
1089 if (imsg.hdr.type != GOT_IMSG_PACKIDX) {
1090 err = got_error(GOT_ERR_PRIVSEP_MSG);
1094 if (imsg.fd == -1) {
1095 err = got_error(GOT_ERR_PRIVSEP_NO_FD);
1099 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1100 if (datalen != sizeof(ipackidx)) {
1101 err = got_error(GOT_ERR_PRIVSEP_LEN);
1104 memcpy(&ipackidx, imsg.data, sizeof(ipackidx));
1106 p->len = ipackidx.len;
1107 p->fd = dup(imsg.fd);
1109 err = got_error_from_errno("dup");
1112 if (lseek(p->fd, 0, SEEK_SET) == -1) {
1113 err = got_error_from_errno("lseek");
1117 #ifndef GOT_PACK_NO_MMAP
1118 p->map = mmap(NULL, p->len, PROT_READ, MAP_PRIVATE, p->fd, 0);
1119 if (p->map == MAP_FAILED)
1120 p->map = NULL; /* fall back to read(2) */
1122 err = got_packidx_init_hdr(p, 1, ipackidx.packfile_size);
1127 got_packidx_close(p);
1134 static const struct got_error *
1135 receive_pack(struct got_pack **packp, struct imsgbuf *ibuf)
1137 const struct got_error *err = NULL;
1139 struct got_imsg_pack ipack;
1141 struct got_pack *pack;
1145 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1149 pack = calloc(1, sizeof(*pack));
1151 err = got_error_from_errno("calloc");
1155 if (imsg.hdr.type != GOT_IMSG_PACK) {
1156 err = got_error(GOT_ERR_PRIVSEP_MSG);
1160 if (imsg.fd == -1) {
1161 err = got_error(GOT_ERR_PRIVSEP_NO_FD);
1165 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1166 if (datalen != sizeof(ipack)) {
1167 err = got_error(GOT_ERR_PRIVSEP_LEN);
1170 memcpy(&ipack, imsg.data, sizeof(ipack));
1172 pack->filesize = ipack.filesize;
1173 pack->fd = dup(imsg.fd);
1174 if (pack->fd == -1) {
1175 err = got_error_from_errno("dup");
1178 if (lseek(pack->fd, 0, SEEK_SET) == -1) {
1179 err = got_error_from_errno("lseek");
1182 pack->path_packfile = strdup(ipack.path_packfile);
1183 if (pack->path_packfile == NULL) {
1184 err = got_error_from_errno("strdup");
1188 pack->delta_cache = got_delta_cache_alloc(100,
1189 GOT_DELTA_RESULT_SIZE_CACHED_MAX);
1190 if (pack->delta_cache == NULL) {
1191 err = got_error_from_errno("got_delta_cache_alloc");
1195 #ifndef GOT_PACK_NO_MMAP
1196 pack->map = mmap(NULL, pack->filesize, PROT_READ, MAP_PRIVATE,
1198 if (pack->map == MAP_FAILED)
1199 pack->map = NULL; /* fall back to read(2) */
1213 main(int argc, char *argv[])
1215 const struct got_error *err = NULL;
1216 struct imsgbuf ibuf;
1218 struct got_packidx *packidx = NULL;
1219 struct got_pack *pack = NULL;
1220 struct got_object_cache objcache;
1221 FILE *basefile = NULL, *accumfile = NULL, *delta_outfile = NULL;
1223 //static int attached;
1224 //while (!attached) sleep(1);
1226 signal(SIGINT, catch_sigint);
1228 imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
1230 err = got_object_cache_init(&objcache, GOT_OBJECT_CACHE_TYPE_OBJ);
1232 err = got_error_from_errno("got_object_cache_init");
1233 got_privsep_send_error(&ibuf, err);
1238 /* revoke access to most system calls */
1239 if (pledge("stdio recvfd", NULL) == -1) {
1240 err = got_error_from_errno("pledge");
1241 got_privsep_send_error(&ibuf, err);
1246 err = receive_packidx(&packidx, &ibuf);
1248 got_privsep_send_error(&ibuf, err);
1252 err = receive_pack(&pack, &ibuf);
1254 got_privsep_send_error(&ibuf, err);
1261 if (sigint_received) {
1262 err = got_error(GOT_ERR_CANCELLED);
1266 err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
1268 if (err->code == GOT_ERR_PRIVSEP_PIPE)
1273 if (imsg.hdr.type == GOT_IMSG_STOP)
1276 switch (imsg.hdr.type) {
1277 case GOT_IMSG_TMPFD:
1278 if (basefile == NULL) {
1279 err = receive_tempfile(&basefile, "w+",
1281 } else if (accumfile == NULL) {
1282 err = receive_tempfile(&accumfile, "w+",
1285 err = got_error(GOT_ERR_PRIVSEP_MSG);
1287 case GOT_IMSG_PACKED_OBJECT_REQUEST:
1288 err = object_request(&imsg, &ibuf, pack, packidx,
1291 case GOT_IMSG_PACKED_RAW_OBJECT_REQUEST:
1292 if (basefile == NULL || accumfile == NULL) {
1293 err = got_error(GOT_ERR_PRIVSEP_MSG);
1296 err = raw_object_request(&imsg, &ibuf, pack, packidx,
1297 &objcache, basefile, accumfile);
1299 case GOT_IMSG_RAW_DELTA_OUTFD:
1300 if (delta_outfile != NULL) {
1301 err = got_error(GOT_ERR_PRIVSEP_MSG);
1304 err = receive_tempfile(&delta_outfile, "w",
1307 case GOT_IMSG_RAW_DELTA_REQUEST:
1308 if (delta_outfile == NULL) {
1309 err = got_error(GOT_ERR_PRIVSEP_NO_FD);
1312 err = raw_delta_request(&imsg, &ibuf, delta_outfile,
1315 case GOT_IMSG_DELTA_REUSE_REQUEST:
1316 if (delta_outfile == NULL) {
1317 err = got_error(GOT_ERR_PRIVSEP_NO_FD);
1320 err = delta_reuse_request(&imsg, &ibuf,
1321 delta_outfile, pack, packidx);
1323 case GOT_IMSG_COMMIT_REQUEST:
1324 err = commit_request(&imsg, &ibuf, pack, packidx,
1327 case GOT_IMSG_TREE_REQUEST:
1328 err = tree_request(&imsg, &ibuf, pack, packidx,
1331 case GOT_IMSG_BLOB_REQUEST:
1332 if (basefile == NULL || accumfile == NULL) {
1333 err = got_error(GOT_ERR_PRIVSEP_MSG);
1336 err = blob_request(&imsg, &ibuf, pack, packidx,
1337 &objcache, basefile, accumfile);
1339 case GOT_IMSG_TAG_REQUEST:
1340 err = tag_request(&imsg, &ibuf, pack, packidx,
1343 case GOT_IMSG_COMMIT_TRAVERSAL_REQUEST:
1344 err = commit_traversal_request(&imsg, &ibuf, pack,
1345 packidx, &objcache);
1348 err = got_error(GOT_ERR_PRIVSEP_MSG);
1352 if (imsg.fd != -1 && close(imsg.fd) == -1 && err == NULL)
1353 err = got_error_from_errno("close");
1360 got_packidx_close(packidx);
1362 got_pack_close(pack);
1363 got_object_cache_close(&objcache);
1365 if (basefile && fclose(basefile) == EOF && err == NULL)
1366 err = got_error_from_errno("fclose");
1367 if (accumfile && fclose(accumfile) == EOF && err == NULL)
1368 err = got_error_from_errno("fclose");
1369 if (delta_outfile && fclose(delta_outfile) == EOF && err == NULL)
1370 err = got_error_from_errno("fclose");
1372 if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
1373 fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
1374 got_privsep_send_error(&ibuf, err);
1377 if (close(GOT_IMSG_FD_CHILD) == -1 && err == NULL)
1378 err = got_error_from_errno("close");