2 * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
3 * Copyright (c) 2020 Ori Bernstein <ori@openbsd.org>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <sys/types.h>
35 #include "got_compat.h"
37 #include "got_object.h"
38 #include "got_error.h"
40 #include "got_repository.h"
42 #include "got_lib_sha1.h"
43 #include "got_lib_delta.h"
44 #include "got_lib_inflate.h"
45 #include "got_lib_object.h"
46 #include "got_lib_object_parse.h"
47 #include "got_lib_privsep.h"
48 #include "got_lib_pack.h"
50 #include "got_privsep.h"
53 #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
57 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
60 static const struct got_error *
61 poll_fd(int fd, int events, int timeout)
69 pfd[0].events = events;
74 if (sigemptyset(&sigset) == -1)
75 return got_error_from_errno("sigemptyset");
76 if (sigaddset(&sigset, SIGWINCH) == -1)
77 return got_error_from_errno("sigaddset");
79 n = ppoll(pfd, 1, timeout == INFTIM ? NULL : &ts, &sigset);
81 return got_error_from_errno("ppoll");
83 return got_error(GOT_ERR_TIMEOUT);
84 if (pfd[0].revents & (POLLERR | POLLNVAL))
85 return got_error_from_errno("poll error");
86 if (pfd[0].revents & (events | POLLHUP))
89 return got_error(GOT_ERR_INTERRUPT);
92 static const struct got_error *
93 read_imsg(struct imsgbuf *ibuf)
95 const struct got_error *err;
98 err = poll_fd(ibuf->fd, POLLIN, INFTIM);
104 if (errno == EAGAIN) /* Could be a file-descriptor leak. */
105 return got_error(GOT_ERR_PRIVSEP_NO_FD);
106 return got_error(GOT_ERR_PRIVSEP_READ);
109 return got_error(GOT_ERR_PRIVSEP_PIPE);
114 const struct got_error *
115 got_privsep_wait_for_child(pid_t pid)
119 if (waitpid(pid, &child_status, 0) == -1)
120 return got_error_from_errno("waitpid");
122 if (!WIFEXITED(child_status))
123 return got_error(GOT_ERR_PRIVSEP_DIED);
125 if (WEXITSTATUS(child_status) != 0)
126 return got_error(GOT_ERR_PRIVSEP_EXIT);
131 static const struct got_error *
132 recv_imsg_error(struct imsg *imsg, size_t datalen)
134 struct got_imsg_error *ierr;
136 if (datalen != sizeof(*ierr))
137 return got_error(GOT_ERR_PRIVSEP_LEN);
140 if (ierr->code == GOT_ERR_ERRNO) {
141 static struct got_error serr;
142 serr.code = GOT_ERR_ERRNO;
143 serr.msg = strerror(ierr->errno_code);
147 return got_error(ierr->code);
150 const struct got_error *
151 got_privsep_recv_imsg(struct imsg *imsg, struct imsgbuf *ibuf,
154 const struct got_error *err;
157 n = imsg_get(ibuf, imsg);
159 return got_error_from_errno("imsg_get");
162 err = read_imsg(ibuf);
165 n = imsg_get(ibuf, imsg);
167 return got_error_from_errno("imsg_get");
170 if (imsg->hdr.len < IMSG_HEADER_SIZE + min_datalen)
171 return got_error(GOT_ERR_PRIVSEP_LEN);
173 if (imsg->hdr.type == GOT_IMSG_ERROR) {
174 size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
175 return recv_imsg_error(imsg, datalen);
181 /* Attempt to send an error in an imsg. Complain on stderr as a last resort. */
183 got_privsep_send_error(struct imsgbuf *ibuf, const struct got_error *err)
185 const struct got_error *poll_err;
186 struct got_imsg_error ierr;
189 ierr.code = err->code;
190 if (err->code == GOT_ERR_ERRNO)
191 ierr.errno_code = errno;
194 ret = imsg_compose(ibuf, GOT_IMSG_ERROR, 0, 0, -1, &ierr, sizeof(ierr));
196 fprintf(stderr, "%s: error %d \"%s\": imsg_compose: %s\n",
197 getprogname(), err->code, err->msg, strerror(errno));
201 poll_err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
203 fprintf(stderr, "%s: error %d \"%s\": poll: %s\n",
204 getprogname(), err->code, err->msg, poll_err->msg);
208 ret = imsg_flush(ibuf);
210 fprintf(stderr, "%s: error %d \"%s\": imsg_flush: %s\n",
211 getprogname(), err->code, err->msg, strerror(errno));
217 static const struct got_error *
218 flush_imsg(struct imsgbuf *ibuf)
220 const struct got_error *err;
222 err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
226 if (imsg_flush(ibuf) == -1) {
228 return got_error_from_errno("imsg_flush");
234 const struct got_error *
235 got_privsep_flush_imsg(struct imsgbuf *ibuf)
237 return flush_imsg(ibuf);
240 const struct got_error *
241 got_privsep_send_stop(int fd)
243 const struct got_error *err = NULL;
246 imsg_init(&ibuf, fd);
248 if (imsg_compose(&ibuf, GOT_IMSG_STOP, 0, 0, -1, NULL, 0) == -1)
249 return got_error_from_errno("imsg_compose STOP");
251 err = flush_imsg(&ibuf);
255 const struct got_error *
256 got_privsep_send_obj_req(struct imsgbuf *ibuf, int fd,
257 struct got_object_id *id)
259 if (imsg_compose(ibuf, GOT_IMSG_OBJECT_REQUEST, 0, 0, fd,
260 id, sizeof(*id)) == -1)
261 return got_error_from_errno("imsg_compose OBJECT_REQUEST");
263 return flush_imsg(ibuf);
266 const struct got_error *
267 got_privsep_send_raw_obj_req(struct imsgbuf *ibuf, int fd,
268 struct got_object_id *id)
270 if (imsg_compose(ibuf, GOT_IMSG_RAW_OBJECT_REQUEST, 0, 0, fd,
271 id, sizeof(*id)) == -1)
272 return got_error_from_errno("imsg_compose RAW_OBJECT_REQUEST");
274 return flush_imsg(ibuf);
277 const struct got_error *
278 got_privsep_send_raw_obj_outfd(struct imsgbuf *ibuf, int outfd)
280 const struct got_error *err = NULL;
282 if (imsg_compose(ibuf, GOT_IMSG_RAW_OBJECT_OUTFD, 0, 0, outfd, NULL, 0)
284 err = got_error_from_errno("imsg_compose RAW_OBJECT_OUTFD");
289 return flush_imsg(ibuf);
292 const struct got_error *
293 got_privsep_send_raw_obj(struct imsgbuf *ibuf, off_t size, size_t hdrlen,
296 const struct got_error *err = NULL;
297 struct got_imsg_raw_obj iobj;
298 size_t len = sizeof(iobj);
301 memset(&iobj, 0, sizeof(iobj));
302 iobj.hdrlen = hdrlen;
305 if (data && size + hdrlen <= GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX)
306 len += (size_t)size + hdrlen;
308 wbuf = imsg_create(ibuf, GOT_IMSG_RAW_OBJECT, 0, 0, len);
310 err = got_error_from_errno("imsg_create RAW_OBJECT");
314 if (imsg_add(wbuf, &iobj, sizeof(iobj)) == -1)
315 return got_error_from_errno("imsg_add RAW_OBJECT");
317 if (data && size + hdrlen <= GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX) {
318 if (imsg_add(wbuf, data, size + hdrlen) == -1)
319 return got_error_from_errno("imsg_add RAW_OBJECT");
323 imsg_close(ibuf, wbuf);
325 return flush_imsg(ibuf);
328 const struct got_error *
329 got_privsep_recv_raw_obj(uint8_t **outbuf, off_t *size, size_t *hdrlen,
330 struct imsgbuf *ibuf)
332 const struct got_error *err = NULL;
334 struct got_imsg_raw_obj *iobj;
339 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
343 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
345 switch (imsg.hdr.type) {
346 case GOT_IMSG_RAW_OBJECT:
347 if (datalen < sizeof(*iobj)) {
348 err = got_error(GOT_ERR_PRIVSEP_LEN);
353 *hdrlen = iobj->hdrlen;
355 if (datalen == sizeof(*iobj)) {
356 /* Data has been written to file descriptor. */
361 *size + *hdrlen > GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX) {
362 err = got_error(GOT_ERR_PRIVSEP_LEN);
366 *outbuf = malloc(*size + *hdrlen);
367 if (*outbuf == NULL) {
368 err = got_error_from_errno("malloc");
371 memcpy(*outbuf, imsg.data + sizeof(*iobj), *size + *hdrlen);
374 err = got_error(GOT_ERR_PRIVSEP_MSG);
383 const struct got_error *
384 got_privsep_send_commit_req(struct imsgbuf *ibuf, int fd,
385 struct got_object_id *id, int pack_idx)
387 const struct got_error *err = NULL;
388 struct got_imsg_packed_object iobj;
392 memset(&iobj, 0, sizeof(iobj));
393 if (pack_idx != -1) { /* commit is packed */
395 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
403 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_REQUEST, 0, 0, fd, data, len)
405 err = got_error_from_errno("imsg_compose COMMIT_REQUEST");
410 return flush_imsg(ibuf);
413 const struct got_error *
414 got_privsep_send_tree_req(struct imsgbuf *ibuf, int fd,
415 struct got_object_id *id, int pack_idx)
421 len = sizeof(struct got_imsg_packed_object);
425 wbuf = imsg_create(ibuf, GOT_IMSG_TREE_REQUEST, 0, 0, len);
427 return got_error_from_errno("imsg_create TREE_REQUEST");
429 if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1)
430 return got_error_from_errno("imsg_add TREE_REQUEST");
432 if (pack_idx != -1) { /* tree is packed */
433 if (imsg_add(wbuf, &pack_idx, sizeof(pack_idx)) == -1)
434 return got_error_from_errno("imsg_add TREE_REQUEST");
438 imsg_close(ibuf, wbuf);
440 return flush_imsg(ibuf);
443 const struct got_error *
444 got_privsep_send_tag_req(struct imsgbuf *ibuf, int fd,
445 struct got_object_id *id, int pack_idx)
447 struct got_imsg_packed_object iobj;
451 memset(&iobj, 0, sizeof(iobj));
452 if (pack_idx != -1) { /* tag is packed */
454 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
462 if (imsg_compose(ibuf, GOT_IMSG_TAG_REQUEST, 0, 0, fd, data, len)
464 return got_error_from_errno("imsg_compose TAG_REQUEST");
466 return flush_imsg(ibuf);
469 const struct got_error *
470 got_privsep_send_blob_req(struct imsgbuf *ibuf, int infd,
471 struct got_object_id *id, int pack_idx)
473 const struct got_error *err = NULL;
474 struct got_imsg_packed_object iobj;
478 memset(&iobj, 0, sizeof(iobj));
479 if (pack_idx != -1) { /* blob is packed */
481 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
489 if (imsg_compose(ibuf, GOT_IMSG_BLOB_REQUEST, 0, 0, infd, data, len)
491 err = got_error_from_errno("imsg_compose BLOB_REQUEST");
496 return flush_imsg(ibuf);
499 const struct got_error *
500 got_privsep_send_blob_outfd(struct imsgbuf *ibuf, int outfd)
502 const struct got_error *err = NULL;
504 if (imsg_compose(ibuf, GOT_IMSG_BLOB_OUTFD, 0, 0, outfd, NULL, 0)
506 err = got_error_from_errno("imsg_compose BLOB_OUTFD");
511 return flush_imsg(ibuf);
514 static const struct got_error *
515 send_fd(struct imsgbuf *ibuf, int imsg_code, int fd)
517 const struct got_error *err = NULL;
519 if (imsg_compose(ibuf, imsg_code, 0, 0, fd, NULL, 0) == -1) {
520 err = got_error_from_errno("imsg_compose TMPFD");
525 return flush_imsg(ibuf);
528 const struct got_error *
529 got_privsep_send_tmpfd(struct imsgbuf *ibuf, int fd)
531 return send_fd(ibuf, GOT_IMSG_TMPFD, fd);
534 const struct got_error *
535 got_privsep_send_obj(struct imsgbuf *ibuf, struct got_object *obj)
537 struct got_imsg_object iobj;
539 memset(&iobj, 0, sizeof(iobj));
541 memcpy(iobj.id, obj->id.sha1, sizeof(iobj.id));
542 iobj.type = obj->type;
543 iobj.flags = obj->flags;
544 iobj.hdrlen = obj->hdrlen;
545 iobj.size = obj->size;
546 if (iobj.flags & GOT_OBJ_FLAG_PACKED) {
547 iobj.pack_offset = obj->pack_offset;
548 iobj.pack_idx = obj->pack_idx;
551 if (imsg_compose(ibuf, GOT_IMSG_OBJECT, 0, 0, -1, &iobj, sizeof(iobj))
553 return got_error_from_errno("imsg_compose OBJECT");
555 return flush_imsg(ibuf);
558 const struct got_error *
559 got_privsep_send_fetch_req(struct imsgbuf *ibuf, int fd,
560 struct got_pathlist_head *have_refs, int fetch_all_branches,
561 struct got_pathlist_head *wanted_branches,
562 struct got_pathlist_head *wanted_refs, int list_refs_only, int verbosity)
564 const struct got_error *err = NULL;
567 struct got_pathlist_entry *pe;
568 struct got_imsg_fetch_request fetchreq;
570 memset(&fetchreq, 0, sizeof(fetchreq));
571 fetchreq.fetch_all_branches = fetch_all_branches;
572 fetchreq.list_refs_only = list_refs_only;
573 fetchreq.verbosity = verbosity;
574 TAILQ_FOREACH(pe, have_refs, entry)
575 fetchreq.n_have_refs++;
576 TAILQ_FOREACH(pe, wanted_branches, entry)
577 fetchreq.n_wanted_branches++;
578 TAILQ_FOREACH(pe, wanted_refs, entry)
579 fetchreq.n_wanted_refs++;
580 len = sizeof(struct got_imsg_fetch_request);
581 if (len >= MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
583 return got_error(GOT_ERR_NO_SPACE);
586 if (imsg_compose(ibuf, GOT_IMSG_FETCH_REQUEST, 0, 0, fd,
587 &fetchreq, sizeof(fetchreq)) == -1)
588 return got_error_from_errno(
589 "imsg_compose FETCH_SERVER_PROGRESS");
591 err = flush_imsg(ibuf);
598 TAILQ_FOREACH(pe, have_refs, entry) {
599 const char *name = pe->path;
600 size_t name_len = pe->path_len;
601 struct got_object_id *id = pe->data;
603 len = sizeof(struct got_imsg_fetch_have_ref) + name_len;
604 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_HAVE_REF, 0, 0, len);
606 return got_error_from_errno("imsg_create FETCH_HAVE_REF");
608 /* Keep in sync with struct got_imsg_fetch_have_ref! */
609 if (imsg_add(wbuf, id->sha1, sizeof(id->sha1)) == -1)
610 return got_error_from_errno("imsg_add FETCH_HAVE_REF");
611 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1)
612 return got_error_from_errno("imsg_add FETCH_HAVE_REF");
613 if (imsg_add(wbuf, name, name_len) == -1)
614 return got_error_from_errno("imsg_add FETCH_HAVE_REF");
617 imsg_close(ibuf, wbuf);
618 err = flush_imsg(ibuf);
623 TAILQ_FOREACH(pe, wanted_branches, entry) {
624 const char *name = pe->path;
625 size_t name_len = pe->path_len;
627 len = sizeof(struct got_imsg_fetch_wanted_branch) + name_len;
628 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_WANTED_BRANCH, 0, 0,
631 return got_error_from_errno(
632 "imsg_create FETCH_WANTED_BRANCH");
634 /* Keep in sync with struct got_imsg_fetch_wanted_branch! */
635 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1)
636 return got_error_from_errno(
637 "imsg_add FETCH_WANTED_BRANCH");
638 if (imsg_add(wbuf, name, name_len) == -1)
639 return got_error_from_errno(
640 "imsg_add FETCH_WANTED_BRANCH");
643 imsg_close(ibuf, wbuf);
644 err = flush_imsg(ibuf);
649 TAILQ_FOREACH(pe, wanted_refs, entry) {
650 const char *name = pe->path;
651 size_t name_len = pe->path_len;
653 len = sizeof(struct got_imsg_fetch_wanted_ref) + name_len;
654 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_WANTED_REF, 0, 0,
657 return got_error_from_errno(
658 "imsg_create FETCH_WANTED_REF");
660 /* Keep in sync with struct got_imsg_fetch_wanted_ref! */
661 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1)
662 return got_error_from_errno(
663 "imsg_add FETCH_WANTED_REF");
664 if (imsg_add(wbuf, name, name_len) == -1)
665 return got_error_from_errno(
666 "imsg_add FETCH_WANTED_REF");
669 imsg_close(ibuf, wbuf);
670 err = flush_imsg(ibuf);
680 const struct got_error *
681 got_privsep_send_fetch_outfd(struct imsgbuf *ibuf, int fd)
683 return send_fd(ibuf, GOT_IMSG_FETCH_OUTFD, fd);
686 const struct got_error *
687 got_privsep_recv_fetch_progress(int *done, struct got_object_id **id,
688 char **refname, struct got_pathlist_head *symrefs, char **server_progress,
689 off_t *packfile_size, uint8_t *pack_sha1, struct imsgbuf *ibuf)
691 const struct got_error *err = NULL;
694 struct got_imsg_fetch_symrefs *isymrefs = NULL;
702 *server_progress = NULL;
704 memset(pack_sha1, 0, SHA1_DIGEST_LENGTH);
706 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
710 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
711 switch (imsg.hdr.type) {
713 err = recv_imsg_error(&imsg, datalen);
715 case GOT_IMSG_FETCH_SYMREFS:
716 if (datalen < sizeof(*isymrefs)) {
717 err = got_error(GOT_ERR_PRIVSEP_LEN);
720 if (isymrefs != NULL) {
721 err = got_error(GOT_ERR_PRIVSEP_MSG);
724 isymrefs = (struct got_imsg_fetch_symrefs *)imsg.data;
725 off = sizeof(*isymrefs);
726 remain = datalen - off;
727 for (n = 0; n < isymrefs->nsymrefs; n++) {
728 struct got_imsg_fetch_symref *s;
730 if (remain < sizeof(struct got_imsg_fetch_symref)) {
731 err = got_error(GOT_ERR_PRIVSEP_LEN);
734 s = (struct got_imsg_fetch_symref *)(imsg.data + off);
736 remain -= sizeof(*s);
737 if (remain < s->name_len) {
738 err = got_error(GOT_ERR_PRIVSEP_LEN);
741 name = strndup(imsg.data + off, s->name_len);
743 err = got_error_from_errno("strndup");
747 remain -= s->name_len;
748 if (remain < s->target_len) {
749 err = got_error(GOT_ERR_PRIVSEP_LEN);
753 target = strndup(imsg.data + off, s->target_len);
754 if (target == NULL) {
755 err = got_error_from_errno("strndup");
759 off += s->target_len;
760 remain -= s->target_len;
761 err = got_pathlist_append(symrefs, name, target);
769 case GOT_IMSG_FETCH_REF:
770 if (datalen <= SHA1_DIGEST_LENGTH) {
771 err = got_error(GOT_ERR_PRIVSEP_MSG);
774 *id = malloc(sizeof(**id));
776 err = got_error_from_errno("malloc");
779 memcpy((*id)->sha1, imsg.data, SHA1_DIGEST_LENGTH);
780 *refname = strndup(imsg.data + SHA1_DIGEST_LENGTH,
781 datalen - SHA1_DIGEST_LENGTH);
782 if (*refname == NULL) {
783 err = got_error_from_errno("strndup");
787 case GOT_IMSG_FETCH_SERVER_PROGRESS:
789 err = got_error(GOT_ERR_PRIVSEP_LEN);
792 *server_progress = strndup(imsg.data, datalen);
793 if (*server_progress == NULL) {
794 err = got_error_from_errno("strndup");
797 for (i = 0; i < datalen; i++) {
798 if (!isprint((unsigned char)(*server_progress)[i]) &&
799 !isspace((unsigned char)(*server_progress)[i])) {
800 err = got_error(GOT_ERR_PRIVSEP_MSG);
801 free(*server_progress);
802 *server_progress = NULL;
807 case GOT_IMSG_FETCH_DOWNLOAD_PROGRESS:
808 if (datalen < sizeof(*packfile_size)) {
809 err = got_error(GOT_ERR_PRIVSEP_MSG);
812 memcpy(packfile_size, imsg.data, sizeof(*packfile_size));
814 case GOT_IMSG_FETCH_DONE:
815 if (datalen != SHA1_DIGEST_LENGTH) {
816 err = got_error(GOT_ERR_PRIVSEP_MSG);
819 memcpy(pack_sha1, imsg.data, SHA1_DIGEST_LENGTH);
823 err = got_error(GOT_ERR_PRIVSEP_MSG);
837 static const struct got_error *
838 send_send_ref(const char *name, size_t name_len, struct got_object_id *id,
839 int delete, struct imsgbuf *ibuf)
844 len = sizeof(struct got_imsg_send_ref) + name_len;
845 wbuf = imsg_create(ibuf, GOT_IMSG_SEND_REF, 0, 0, len);
847 return got_error_from_errno("imsg_create SEND_REF");
849 /* Keep in sync with struct got_imsg_send_ref! */
850 if (imsg_add(wbuf, id->sha1, sizeof(id->sha1)) == -1)
851 return got_error_from_errno("imsg_add SEND_REF");
852 if (imsg_add(wbuf, &delete, sizeof(delete)) == -1)
853 return got_error_from_errno("imsg_add SEND_REF");
854 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1)
855 return got_error_from_errno("imsg_add SEND_REF");
856 if (imsg_add(wbuf, name, name_len) == -1)
857 return got_error_from_errno("imsg_add SEND_REF");
860 imsg_close(ibuf, wbuf);
861 return flush_imsg(ibuf);
864 const struct got_error *
865 got_privsep_send_send_req(struct imsgbuf *ibuf, int fd,
866 struct got_pathlist_head *have_refs,
867 struct got_pathlist_head *delete_refs,
870 const struct got_error *err = NULL;
871 struct got_pathlist_entry *pe;
872 struct got_imsg_send_request sendreq;
873 struct got_object_id zero_id;
875 memset(&zero_id, 0, sizeof(zero_id));
876 memset(&sendreq, 0, sizeof(sendreq));
877 sendreq.verbosity = verbosity;
878 TAILQ_FOREACH(pe, have_refs, entry)
880 TAILQ_FOREACH(pe, delete_refs, entry)
882 if (imsg_compose(ibuf, GOT_IMSG_SEND_REQUEST, 0, 0, fd,
883 &sendreq, sizeof(sendreq)) == -1) {
884 err = got_error_from_errno(
885 "imsg_compose FETCH_SERVER_PROGRESS");
889 err = flush_imsg(ibuf);
894 TAILQ_FOREACH(pe, have_refs, entry) {
895 const char *name = pe->path;
896 size_t name_len = pe->path_len;
897 struct got_object_id *id = pe->data;
898 err = send_send_ref(name, name_len, id, 0, ibuf);
903 TAILQ_FOREACH(pe, delete_refs, entry) {
904 const char *name = pe->path;
905 size_t name_len = pe->path_len;
906 err = send_send_ref(name, name_len, &zero_id, 1, ibuf);
911 if (fd != -1 && close(fd) == -1 && err == NULL)
912 err = got_error_from_errno("close");
917 const struct got_error *
918 got_privsep_recv_send_remote_refs(struct got_pathlist_head *remote_refs,
919 struct imsgbuf *ibuf)
921 const struct got_error *err = NULL;
925 struct got_imsg_send_remote_ref iremote_ref;
926 struct got_object_id *id = NULL;
927 char *refname = NULL;
928 struct got_pathlist_entry *new;
931 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
934 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
935 switch (imsg.hdr.type) {
937 err = recv_imsg_error(&imsg, datalen);
939 case GOT_IMSG_SEND_REMOTE_REF:
940 if (datalen < sizeof(iremote_ref)) {
941 err = got_error(GOT_ERR_PRIVSEP_MSG);
944 memcpy(&iremote_ref, imsg.data, sizeof(iremote_ref));
945 if (datalen != sizeof(iremote_ref) +
946 iremote_ref.name_len) {
947 err = got_error(GOT_ERR_PRIVSEP_MSG);
950 id = malloc(sizeof(*id));
952 err = got_error_from_errno("malloc");
955 memcpy(id->sha1, iremote_ref.id, SHA1_DIGEST_LENGTH);
956 refname = strndup(imsg.data + sizeof(iremote_ref),
957 datalen - sizeof(iremote_ref));
958 if (refname == NULL) {
959 err = got_error_from_errno("strndup");
962 err = got_pathlist_insert(&new, remote_refs,
966 if (new == NULL) { /* duplicate which wasn't inserted */
973 case GOT_IMSG_SEND_PACK_REQUEST:
975 err = got_error(GOT_ERR_PRIVSEP_MSG);
978 /* got-send-pack is now waiting for a pack file. */
982 err = got_error(GOT_ERR_PRIVSEP_MSG);
993 const struct got_error *
994 got_privsep_send_packfd(struct imsgbuf *ibuf, int fd)
996 return send_fd(ibuf, GOT_IMSG_SEND_PACKFD, fd);
999 const struct got_error *
1000 got_privsep_recv_send_progress(int *done, off_t *bytes_sent,
1001 int *success, char **refname, struct imsgbuf *ibuf)
1003 const struct got_error *err = NULL;
1006 struct got_imsg_send_ref_status iref_status;
1008 /* Do not reset the current value of 'bytes_sent', it accumulates. */
1013 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1017 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1018 switch (imsg.hdr.type) {
1019 case GOT_IMSG_ERROR:
1020 err = recv_imsg_error(&imsg, datalen);
1022 case GOT_IMSG_SEND_UPLOAD_PROGRESS:
1023 if (datalen < sizeof(*bytes_sent)) {
1024 err = got_error(GOT_ERR_PRIVSEP_MSG);
1027 memcpy(bytes_sent, imsg.data, sizeof(*bytes_sent));
1029 case GOT_IMSG_SEND_REF_STATUS:
1030 if (datalen < sizeof(iref_status)) {
1031 err = got_error(GOT_ERR_PRIVSEP_MSG);
1034 memcpy(&iref_status, imsg.data, sizeof(iref_status));
1035 if (datalen != sizeof(iref_status) + iref_status.name_len) {
1036 err = got_error(GOT_ERR_PRIVSEP_MSG);
1039 *success = iref_status.success;
1040 *refname = strndup(imsg.data + sizeof(iref_status),
1041 iref_status.name_len);
1043 case GOT_IMSG_SEND_DONE:
1045 err = got_error(GOT_ERR_PRIVSEP_MSG);
1051 err = got_error(GOT_ERR_PRIVSEP_MSG);
1059 const struct got_error *
1060 got_privsep_send_index_pack_req(struct imsgbuf *ibuf, uint8_t *pack_sha1,
1063 const struct got_error *err = NULL;
1065 /* Keep in sync with struct got_imsg_index_pack_request */
1066 if (imsg_compose(ibuf, GOT_IMSG_IDXPACK_REQUEST, 0, 0, fd,
1067 pack_sha1, SHA1_DIGEST_LENGTH) == -1) {
1068 err = got_error_from_errno("imsg_compose INDEX_REQUEST");
1072 return flush_imsg(ibuf);
1075 const struct got_error *
1076 got_privsep_send_index_pack_outfd(struct imsgbuf *ibuf, int fd)
1078 return send_fd(ibuf, GOT_IMSG_IDXPACK_OUTFD, fd);
1081 const struct got_error *
1082 got_privsep_recv_index_progress(int *done, int *nobj_total,
1083 int *nobj_indexed, int *nobj_loose, int *nobj_resolved,
1084 struct imsgbuf *ibuf)
1086 const struct got_error *err = NULL;
1088 struct got_imsg_index_pack_progress *iprogress;
1096 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1100 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1101 switch (imsg.hdr.type) {
1102 case GOT_IMSG_ERROR:
1103 err = recv_imsg_error(&imsg, datalen);
1105 case GOT_IMSG_IDXPACK_PROGRESS:
1106 if (datalen < sizeof(*iprogress)) {
1107 err = got_error(GOT_ERR_PRIVSEP_LEN);
1110 iprogress = (struct got_imsg_index_pack_progress *)imsg.data;
1111 if (iprogress->nobj_total < 0 || iprogress->nobj_indexed < 0 ||
1112 iprogress->nobj_loose < 0 || iprogress->nobj_resolved < 0) {
1113 err = got_error(GOT_ERR_RANGE);
1116 *nobj_total = iprogress->nobj_total;
1117 *nobj_indexed = iprogress->nobj_indexed;
1118 *nobj_loose = iprogress->nobj_loose;
1119 *nobj_resolved = iprogress->nobj_resolved;
1121 case GOT_IMSG_IDXPACK_DONE:
1123 err = got_error(GOT_ERR_PRIVSEP_LEN);
1129 err = got_error(GOT_ERR_PRIVSEP_MSG);
1137 const struct got_error *
1138 got_privsep_get_imsg_obj(struct got_object **obj, struct imsg *imsg,
1139 struct imsgbuf *ibuf)
1141 struct got_imsg_object *iobj;
1142 size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1144 if (datalen != sizeof(*iobj))
1145 return got_error(GOT_ERR_PRIVSEP_LEN);
1148 if (iobj->pack_offset < 0)
1149 return got_error(GOT_ERR_PACK_OFFSET);
1151 *obj = calloc(1, sizeof(**obj));
1153 return got_error_from_errno("calloc");
1155 memcpy((*obj)->id.sha1, iobj->id, SHA1_DIGEST_LENGTH);
1156 (*obj)->type = iobj->type;
1157 (*obj)->flags = iobj->flags;
1158 (*obj)->hdrlen = iobj->hdrlen;
1159 (*obj)->size = iobj->size;
1160 /* path_packfile is handled by caller */
1161 if (iobj->flags & GOT_OBJ_FLAG_PACKED) {
1162 (*obj)->pack_offset = iobj->pack_offset;
1163 (*obj)->pack_idx = iobj->pack_idx;
1165 STAILQ_INIT(&(*obj)->deltas.entries);
1169 const struct got_error *
1170 got_privsep_recv_obj(struct got_object **obj, struct imsgbuf *ibuf)
1172 const struct got_error *err = NULL;
1174 const size_t min_datalen =
1175 MIN(sizeof(struct got_imsg_error), sizeof(struct got_imsg_object));
1179 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1183 switch (imsg.hdr.type) {
1184 case GOT_IMSG_OBJECT:
1185 err = got_privsep_get_imsg_obj(obj, &imsg, ibuf);
1188 err = got_error(GOT_ERR_PRIVSEP_MSG);
1197 static const struct got_error *
1198 send_commit_logmsg(struct imsgbuf *ibuf, struct got_commit_object *commit,
1201 const struct got_error *err = NULL;
1202 size_t offset, remain;
1205 remain = logmsg_len;
1206 while (remain > 0) {
1207 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain);
1209 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_LOGMSG, 0, 0, -1,
1210 commit->logmsg + offset, n) == -1) {
1211 err = got_error_from_errno("imsg_compose "
1216 err = flush_imsg(ibuf);
1227 const struct got_error *
1228 got_privsep_send_commit(struct imsgbuf *ibuf, struct got_commit_object *commit)
1230 const struct got_error *err = NULL;
1231 struct got_imsg_commit_object *icommit;
1234 struct got_object_qid *qid;
1235 size_t author_len = strlen(commit->author);
1236 size_t committer_len = strlen(commit->committer);
1237 size_t logmsg_len = strlen(commit->logmsg);
1239 total = sizeof(*icommit) + author_len + committer_len +
1240 commit->nparents * SHA1_DIGEST_LENGTH;
1242 buf = malloc(total);
1244 return got_error_from_errno("malloc");
1246 icommit = (struct got_imsg_commit_object *)buf;
1247 memcpy(icommit->tree_id, commit->tree_id->sha1,
1248 sizeof(icommit->tree_id));
1249 icommit->author_len = author_len;
1250 icommit->author_time = commit->author_time;
1251 icommit->author_gmtoff = commit->author_gmtoff;
1252 icommit->committer_len = committer_len;
1253 icommit->committer_time = commit->committer_time;
1254 icommit->committer_gmtoff = commit->committer_gmtoff;
1255 icommit->logmsg_len = logmsg_len;
1256 icommit->nparents = commit->nparents;
1258 len = sizeof(*icommit);
1259 memcpy(buf + len, commit->author, author_len);
1261 memcpy(buf + len, commit->committer, committer_len);
1262 len += committer_len;
1263 STAILQ_FOREACH(qid, &commit->parent_ids, entry) {
1264 memcpy(buf + len, &qid->id, SHA1_DIGEST_LENGTH);
1265 len += SHA1_DIGEST_LENGTH;
1268 if (imsg_compose(ibuf, GOT_IMSG_COMMIT, 0, 0, -1, buf, len) == -1) {
1269 err = got_error_from_errno("imsg_compose COMMIT");
1273 if (logmsg_len == 0 ||
1274 logmsg_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
1275 err = flush_imsg(ibuf);
1279 err = send_commit_logmsg(ibuf, commit, logmsg_len);
1285 static const struct got_error *
1286 get_commit_from_imsg(struct got_commit_object **commit,
1287 struct imsg *imsg, size_t datalen, struct imsgbuf *ibuf)
1289 const struct got_error *err = NULL;
1290 struct got_imsg_commit_object *icommit;
1294 if (datalen < sizeof(*icommit))
1295 return got_error(GOT_ERR_PRIVSEP_LEN);
1297 icommit = imsg->data;
1298 if (datalen != sizeof(*icommit) + icommit->author_len +
1299 icommit->committer_len +
1300 icommit->nparents * SHA1_DIGEST_LENGTH)
1301 return got_error(GOT_ERR_PRIVSEP_LEN);
1303 if (icommit->nparents < 0)
1304 return got_error(GOT_ERR_PRIVSEP_LEN);
1306 len += sizeof(*icommit);
1308 *commit = got_object_commit_alloc_partial();
1309 if (*commit == NULL)
1310 return got_error_from_errno(
1311 "got_object_commit_alloc_partial");
1313 memcpy((*commit)->tree_id->sha1, icommit->tree_id,
1314 SHA1_DIGEST_LENGTH);
1315 (*commit)->author_time = icommit->author_time;
1316 (*commit)->author_gmtoff = icommit->author_gmtoff;
1317 (*commit)->committer_time = icommit->committer_time;
1318 (*commit)->committer_gmtoff = icommit->committer_gmtoff;
1320 (*commit)->author = strndup(imsg->data + len, icommit->author_len);
1321 if ((*commit)->author == NULL) {
1322 err = got_error_from_errno("strndup");
1325 len += icommit->author_len;
1327 (*commit)->committer = strndup(imsg->data + len,
1328 icommit->committer_len);
1329 if ((*commit)->committer == NULL) {
1330 err = got_error_from_errno("strndup");
1333 len += icommit->committer_len;
1335 if (icommit->logmsg_len == 0) {
1336 (*commit)->logmsg = strdup("");
1337 if ((*commit)->logmsg == NULL) {
1338 err = got_error_from_errno("strdup");
1342 size_t offset = 0, remain = icommit->logmsg_len;
1344 (*commit)->logmsg = malloc(icommit->logmsg_len + 1);
1345 if ((*commit)->logmsg == NULL) {
1346 err = got_error_from_errno("malloc");
1349 while (remain > 0) {
1350 struct imsg imsg_log;
1351 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,
1354 err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
1358 if (imsg_log.hdr.type != GOT_IMSG_COMMIT_LOGMSG) {
1359 err = got_error(GOT_ERR_PRIVSEP_MSG);
1363 memcpy((*commit)->logmsg + offset,
1365 imsg_free(&imsg_log);
1369 (*commit)->logmsg[icommit->logmsg_len] = '\0';
1372 for (i = 0; i < icommit->nparents; i++) {
1373 struct got_object_qid *qid;
1375 err = got_object_qid_alloc_partial(&qid);
1378 memcpy(&qid->id, imsg->data + len +
1379 i * SHA1_DIGEST_LENGTH, sizeof(qid->id));
1380 STAILQ_INSERT_TAIL(&(*commit)->parent_ids, qid, entry);
1381 (*commit)->nparents++;
1385 got_object_commit_close(*commit);
1391 const struct got_error *
1392 got_privsep_recv_commit(struct got_commit_object **commit, struct imsgbuf *ibuf)
1394 const struct got_error *err = NULL;
1397 const size_t min_datalen =
1398 MIN(sizeof(struct got_imsg_error),
1399 sizeof(struct got_imsg_commit_object));
1403 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1407 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1409 switch (imsg.hdr.type) {
1410 case GOT_IMSG_COMMIT:
1411 err = get_commit_from_imsg(commit, &imsg, datalen, ibuf);
1414 err = got_error(GOT_ERR_PRIVSEP_MSG);
1423 static const struct got_error *
1424 send_tree_entries_batch(struct imsgbuf *ibuf,
1425 struct got_parsed_tree_entry *entries, int idx0, int idxN, size_t len)
1428 struct got_imsg_tree_entries ientries;
1431 memset(&ientries, 0, sizeof(ientries));
1433 wbuf = imsg_create(ibuf, GOT_IMSG_TREE_ENTRIES, 0, 0, len);
1435 return got_error_from_errno("imsg_create TREE_ENTRY");
1437 ientries.nentries = idxN - idx0 + 1;
1438 if (imsg_add(wbuf, &ientries, sizeof(ientries)) == -1)
1439 return got_error_from_errno("imsg_add TREE_ENTRY");
1441 for (i = idx0; i <= idxN; i++) {
1442 struct got_parsed_tree_entry *pte = &entries[i];
1444 /* Keep in sync with struct got_imsg_tree_object definition! */
1445 if (imsg_add(wbuf, pte->id, SHA1_DIGEST_LENGTH) == -1)
1446 return got_error_from_errno("imsg_add TREE_ENTRY");
1447 if (imsg_add(wbuf, &pte->mode, sizeof(pte->mode)) == -1)
1448 return got_error_from_errno("imsg_add TREE_ENTRY");
1449 if (imsg_add(wbuf, &pte->namelen, sizeof(pte->namelen)) == -1)
1450 return got_error_from_errno("imsg_add TREE_ENTRY");
1452 /* Remaining bytes are the entry's name. */
1453 if (imsg_add(wbuf, pte->name, pte->namelen) == -1)
1454 return got_error_from_errno("imsg_add TREE_ENTRY");
1458 imsg_close(ibuf, wbuf);
1462 static const struct got_error *
1463 send_tree_entries(struct imsgbuf *ibuf, struct got_parsed_tree_entry *entries,
1466 const struct got_error *err = NULL;
1468 size_t entries_len = sizeof(struct got_imsg_tree_entries);
1471 for (j = 0; j < nentries; j++) {
1472 struct got_parsed_tree_entry *pte = &entries[j];
1473 size_t len = sizeof(*pte) + pte->namelen;
1476 entries_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
1477 err = send_tree_entries_batch(ibuf, entries,
1478 i, j - 1, entries_len);
1482 entries_len = sizeof(struct got_imsg_tree_entries);
1489 err = send_tree_entries_batch(ibuf, entries, i, j - 1,
1498 const struct got_error *
1499 got_privsep_send_tree(struct imsgbuf *ibuf,
1500 struct got_parsed_tree_entry *entries, int nentries)
1502 const struct got_error *err = NULL;
1503 struct got_imsg_tree_object itree;
1505 memset(&itree, 0, sizeof(itree));
1506 itree.nentries = nentries;
1507 if (imsg_compose(ibuf, GOT_IMSG_TREE, 0, 0, -1, &itree, sizeof(itree))
1509 return got_error_from_errno("imsg_compose TREE");
1511 err = send_tree_entries(ibuf, entries, nentries);
1515 return flush_imsg(ibuf);
1519 static const struct got_error *
1520 recv_tree_entries(void *data, size_t datalen, struct got_tree_object *tree,
1523 const struct got_error *err = NULL;
1524 struct got_imsg_tree_entries *ientries;
1525 struct got_tree_entry *te;
1529 if (datalen <= sizeof(*ientries) ||
1530 datalen > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
1531 return got_error(GOT_ERR_PRIVSEP_LEN);
1533 ientries = (struct got_imsg_tree_entries *)data;
1534 if (ientries->nentries > INT_MAX) {
1535 return got_error_msg(GOT_ERR_NO_SPACE,
1536 "too many tree entries");
1539 te_offset = sizeof(*ientries);
1540 for (i = 0; i < ientries->nentries; i++) {
1541 struct got_imsg_tree_entry ite;
1542 const char *te_name;
1543 uint8_t *buf = (uint8_t *)data + te_offset;
1545 if (te_offset >= datalen) {
1546 err = got_error(GOT_ERR_PRIVSEP_LEN);
1550 /* Might not be aligned, size is ~32 bytes. */
1551 memcpy(&ite, buf, sizeof(ite));
1553 if (ite.namelen >= sizeof(te->name)) {
1554 err = got_error(GOT_ERR_PRIVSEP_LEN);
1557 if (te_offset + sizeof(ite) + ite.namelen > datalen) {
1558 err = got_error(GOT_ERR_PRIVSEP_LEN);
1562 if (*nentries >= tree->nentries) {
1563 err = got_error(GOT_ERR_PRIVSEP_LEN);
1566 te = &tree->entries[*nentries];
1567 te_name = buf + sizeof(ite);
1568 memcpy(te->name, te_name, ite.namelen);
1569 te->name[ite.namelen] = '\0';
1570 memcpy(te->id.sha1, ite.id, SHA1_DIGEST_LENGTH);
1571 te->mode = ite.mode;
1572 te->idx = *nentries;
1575 te_offset += sizeof(ite) + ite.namelen;
1581 const struct got_error *
1582 got_privsep_recv_tree(struct got_tree_object **tree, struct imsgbuf *ibuf)
1584 const struct got_error *err = NULL;
1585 const size_t min_datalen =
1586 MIN(sizeof(struct got_imsg_error),
1587 sizeof(struct got_imsg_tree_object));
1588 struct got_imsg_tree_object *itree;
1593 err = read_imsg(ibuf);
1602 n = imsg_get(ibuf, &imsg);
1605 if (nentries < (*tree)->nentries) {
1606 err = read_imsg(ibuf);
1613 err = got_error(GOT_ERR_PRIVSEP_MSG);
1618 if (imsg.hdr.len < IMSG_HEADER_SIZE + min_datalen) {
1620 err = got_error(GOT_ERR_PRIVSEP_LEN);
1624 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1626 switch (imsg.hdr.type) {
1627 case GOT_IMSG_ERROR:
1628 err = recv_imsg_error(&imsg, datalen);
1631 /* This message should only appear once. */
1632 if (*tree != NULL) {
1633 err = got_error(GOT_ERR_PRIVSEP_MSG);
1636 if (datalen != sizeof(*itree)) {
1637 err = got_error(GOT_ERR_PRIVSEP_LEN);
1641 if (itree->nentries < 0) {
1642 err = got_error(GOT_ERR_PRIVSEP_LEN);
1645 *tree = malloc(sizeof(**tree));
1646 if (*tree == NULL) {
1647 err = got_error_from_errno("malloc");
1650 (*tree)->entries = calloc(itree->nentries,
1651 sizeof(struct got_tree_entry));
1652 if ((*tree)->entries == NULL) {
1653 err = got_error_from_errno("malloc");
1658 (*tree)->nentries = itree->nentries;
1659 (*tree)->refcnt = 0;
1661 case GOT_IMSG_TREE_ENTRIES:
1662 /* This message should be preceeded by GOT_IMSG_TREE. */
1663 if (*tree == NULL) {
1664 err = got_error(GOT_ERR_PRIVSEP_MSG);
1667 err = recv_tree_entries(imsg.data, datalen,
1671 err = got_error(GOT_ERR_PRIVSEP_MSG);
1680 if (*tree && (*tree)->nentries != nentries) {
1682 err = got_error(GOT_ERR_PRIVSEP_LEN);
1683 got_object_tree_close(*tree);
1690 const struct got_error *
1691 got_privsep_send_blob(struct imsgbuf *ibuf, size_t size, size_t hdrlen,
1692 const uint8_t *data)
1694 struct got_imsg_blob iblob;
1696 memset(&iblob, 0, sizeof(iblob));
1698 iblob.hdrlen = hdrlen;
1703 if (size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX)
1704 return got_error(GOT_ERR_NO_SPACE);
1706 buf = malloc(sizeof(iblob) + size);
1708 return got_error_from_errno("malloc");
1710 memcpy(buf, &iblob, sizeof(iblob));
1711 memcpy(buf + sizeof(iblob), data, size);
1712 if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, buf,
1713 sizeof(iblob) + size) == -1) {
1715 return got_error_from_errno("imsg_compose BLOB");
1719 /* Data has already been written to file descriptor. */
1720 if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, &iblob,
1721 sizeof(iblob)) == -1)
1722 return got_error_from_errno("imsg_compose BLOB");
1726 return flush_imsg(ibuf);
1729 const struct got_error *
1730 got_privsep_recv_blob(uint8_t **outbuf, size_t *size, size_t *hdrlen,
1731 struct imsgbuf *ibuf)
1733 const struct got_error *err = NULL;
1735 struct got_imsg_blob *iblob;
1740 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1744 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1746 switch (imsg.hdr.type) {
1748 if (datalen < sizeof(*iblob)) {
1749 err = got_error(GOT_ERR_PRIVSEP_LEN);
1753 *size = iblob->size;
1754 *hdrlen = iblob->hdrlen;
1756 if (datalen == sizeof(*iblob)) {
1757 /* Data has been written to file descriptor. */
1761 if (*size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX ||
1762 *size > datalen + sizeof(*iblob)) {
1763 err = got_error(GOT_ERR_PRIVSEP_LEN);
1767 *outbuf = malloc(*size);
1768 if (*outbuf == NULL) {
1769 err = got_error_from_errno("malloc");
1772 memcpy(*outbuf, imsg.data + sizeof(*iblob), *size);
1775 err = got_error(GOT_ERR_PRIVSEP_MSG);
1784 static const struct got_error *
1785 send_tagmsg(struct imsgbuf *ibuf, struct got_tag_object *tag, size_t tagmsg_len)
1787 const struct got_error *err = NULL;
1788 size_t offset, remain;
1791 remain = tagmsg_len;
1792 while (remain > 0) {
1793 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain);
1795 if (imsg_compose(ibuf, GOT_IMSG_TAG_TAGMSG, 0, 0, -1,
1796 tag->tagmsg + offset, n) == -1) {
1797 err = got_error_from_errno("imsg_compose TAG_TAGMSG");
1801 err = flush_imsg(ibuf);
1812 const struct got_error *
1813 got_privsep_send_tag(struct imsgbuf *ibuf, struct got_tag_object *tag)
1815 const struct got_error *err = NULL;
1816 struct got_imsg_tag_object *itag;
1819 size_t tag_len = strlen(tag->tag);
1820 size_t tagger_len = strlen(tag->tagger);
1821 size_t tagmsg_len = strlen(tag->tagmsg);
1823 total = sizeof(*itag) + tag_len + tagger_len + tagmsg_len;
1825 buf = malloc(total);
1827 return got_error_from_errno("malloc");
1829 itag = (struct got_imsg_tag_object *)buf;
1830 memcpy(itag->id, tag->id.sha1, sizeof(itag->id));
1831 itag->obj_type = tag->obj_type;
1832 itag->tag_len = tag_len;
1833 itag->tagger_len = tagger_len;
1834 itag->tagger_time = tag->tagger_time;
1835 itag->tagger_gmtoff = tag->tagger_gmtoff;
1836 itag->tagmsg_len = tagmsg_len;
1838 len = sizeof(*itag);
1839 memcpy(buf + len, tag->tag, tag_len);
1841 memcpy(buf + len, tag->tagger, tagger_len);
1844 if (imsg_compose(ibuf, GOT_IMSG_TAG, 0, 0, -1, buf, len) == -1) {
1845 err = got_error_from_errno("imsg_compose TAG");
1849 if (tagmsg_len == 0 ||
1850 tagmsg_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
1851 err = flush_imsg(ibuf);
1855 err = send_tagmsg(ibuf, tag, tagmsg_len);
1861 const struct got_error *
1862 got_privsep_recv_tag(struct got_tag_object **tag, struct imsgbuf *ibuf)
1864 const struct got_error *err = NULL;
1866 struct got_imsg_tag_object *itag;
1867 size_t len, datalen;
1868 const size_t min_datalen =
1869 MIN(sizeof(struct got_imsg_error),
1870 sizeof(struct got_imsg_tag_object));
1874 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1878 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1881 switch (imsg.hdr.type) {
1883 if (datalen < sizeof(*itag)) {
1884 err = got_error(GOT_ERR_PRIVSEP_LEN);
1888 if (datalen != sizeof(*itag) + itag->tag_len +
1890 err = got_error(GOT_ERR_PRIVSEP_LEN);
1893 len += sizeof(*itag);
1895 *tag = calloc(1, sizeof(**tag));
1897 err = got_error_from_errno("calloc");
1901 memcpy((*tag)->id.sha1, itag->id, SHA1_DIGEST_LENGTH);
1903 (*tag)->tag = strndup(imsg.data + len, itag->tag_len);
1904 if ((*tag)->tag == NULL) {
1905 err = got_error_from_errno("strndup");
1908 len += itag->tag_len;
1910 (*tag)->obj_type = itag->obj_type;
1911 (*tag)->tagger_time = itag->tagger_time;
1912 (*tag)->tagger_gmtoff = itag->tagger_gmtoff;
1914 (*tag)->tagger = strndup(imsg.data + len, itag->tagger_len);
1915 if ((*tag)->tagger == NULL) {
1916 err = got_error_from_errno("strndup");
1919 len += itag->tagger_len;
1921 if (itag->tagmsg_len == 0) {
1922 (*tag)->tagmsg = strdup("");
1923 if ((*tag)->tagmsg == NULL) {
1924 err = got_error_from_errno("strdup");
1928 size_t offset = 0, remain = itag->tagmsg_len;
1930 (*tag)->tagmsg = malloc(itag->tagmsg_len + 1);
1931 if ((*tag)->tagmsg == NULL) {
1932 err = got_error_from_errno("malloc");
1935 while (remain > 0) {
1936 struct imsg imsg_log;
1937 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,
1940 err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
1944 if (imsg_log.hdr.type != GOT_IMSG_TAG_TAGMSG)
1945 return got_error(GOT_ERR_PRIVSEP_MSG);
1947 memcpy((*tag)->tagmsg + offset, imsg_log.data,
1949 imsg_free(&imsg_log);
1953 (*tag)->tagmsg[itag->tagmsg_len] = '\0';
1958 err = got_error(GOT_ERR_PRIVSEP_MSG);
1967 const struct got_error *
1968 got_privsep_init_pack_child(struct imsgbuf *ibuf, struct got_pack *pack,
1969 struct got_packidx *packidx)
1971 const struct got_error *err = NULL;
1972 struct got_imsg_packidx ipackidx;
1973 struct got_imsg_pack ipack;
1976 memset(&ipackidx, 0, sizeof(ipackidx));
1977 memset(&ipack, 0, sizeof(ipack));
1979 ipackidx.len = packidx->len;
1980 ipackidx.packfile_size = pack->filesize;
1981 fd = dup(packidx->fd);
1983 return got_error_from_errno("dup");
1985 if (imsg_compose(ibuf, GOT_IMSG_PACKIDX, 0, 0, fd, &ipackidx,
1986 sizeof(ipackidx)) == -1) {
1987 err = got_error_from_errno("imsg_compose PACKIDX");
1992 if (strlcpy(ipack.path_packfile, pack->path_packfile,
1993 sizeof(ipack.path_packfile)) >= sizeof(ipack.path_packfile))
1994 return got_error(GOT_ERR_NO_SPACE);
1995 ipack.filesize = pack->filesize;
1999 return got_error_from_errno("dup");
2001 if (imsg_compose(ibuf, GOT_IMSG_PACK, 0, 0, fd, &ipack, sizeof(ipack))
2003 err = got_error_from_errno("imsg_compose PACK");
2008 return flush_imsg(ibuf);
2011 const struct got_error *
2012 got_privsep_send_packed_obj_req(struct imsgbuf *ibuf, int idx,
2013 struct got_object_id *id)
2015 struct got_imsg_packed_object iobj;
2017 memset(&iobj, 0, sizeof(iobj));
2019 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
2021 if (imsg_compose(ibuf, GOT_IMSG_PACKED_OBJECT_REQUEST, 0, 0, -1,
2022 &iobj, sizeof(iobj)) == -1)
2023 return got_error_from_errno("imsg_compose "
2024 "PACKED_OBJECT_REQUEST");
2026 return flush_imsg(ibuf);
2029 const struct got_error *
2030 got_privsep_send_packed_raw_obj_req(struct imsgbuf *ibuf, int idx,
2031 struct got_object_id *id)
2033 struct got_imsg_packed_object iobj;
2035 memset(&iobj, 0, sizeof(iobj));
2037 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
2039 if (imsg_compose(ibuf, GOT_IMSG_PACKED_RAW_OBJECT_REQUEST, 0, 0, -1,
2040 &iobj, sizeof(iobj)) == -1)
2041 return got_error_from_errno("imsg_compose "
2042 "PACKED_OBJECT_REQUEST");
2044 return flush_imsg(ibuf);
2047 const struct got_error *
2048 got_privsep_send_gitconfig_parse_req(struct imsgbuf *ibuf, int fd)
2050 const struct got_error *err = NULL;
2052 if (imsg_compose(ibuf, GOT_IMSG_GITCONFIG_PARSE_REQUEST, 0, 0, fd,
2054 err = got_error_from_errno("imsg_compose "
2055 "GITCONFIG_PARSE_REQUEST");
2060 return flush_imsg(ibuf);
2063 const struct got_error *
2064 got_privsep_send_gitconfig_repository_format_version_req(struct imsgbuf *ibuf)
2066 if (imsg_compose(ibuf,
2067 GOT_IMSG_GITCONFIG_REPOSITORY_FORMAT_VERSION_REQUEST, 0, 0, -1,
2069 return got_error_from_errno("imsg_compose "
2070 "GITCONFIG_REPOSITORY_FORMAT_VERSION_REQUEST");
2072 return flush_imsg(ibuf);
2075 const struct got_error *
2076 got_privsep_send_gitconfig_repository_extensions_req(struct imsgbuf *ibuf)
2078 if (imsg_compose(ibuf,
2079 GOT_IMSG_GITCONFIG_REPOSITORY_EXTENSIONS_REQUEST, 0, 0, -1,
2081 return got_error_from_errno("imsg_compose "
2082 "GITCONFIG_REPOSITORY_EXTENSIONS_REQUEST");
2084 return flush_imsg(ibuf);
2088 const struct got_error *
2089 got_privsep_send_gitconfig_author_name_req(struct imsgbuf *ibuf)
2091 if (imsg_compose(ibuf,
2092 GOT_IMSG_GITCONFIG_AUTHOR_NAME_REQUEST, 0, 0, -1, NULL, 0) == -1)
2093 return got_error_from_errno("imsg_compose "
2094 "GITCONFIG_AUTHOR_NAME_REQUEST");
2096 return flush_imsg(ibuf);
2099 const struct got_error *
2100 got_privsep_send_gitconfig_author_email_req(struct imsgbuf *ibuf)
2102 if (imsg_compose(ibuf,
2103 GOT_IMSG_GITCONFIG_AUTHOR_EMAIL_REQUEST, 0, 0, -1, NULL, 0) == -1)
2104 return got_error_from_errno("imsg_compose "
2105 "GITCONFIG_AUTHOR_EMAIL_REQUEST");
2107 return flush_imsg(ibuf);
2110 const struct got_error *
2111 got_privsep_send_gitconfig_remotes_req(struct imsgbuf *ibuf)
2113 if (imsg_compose(ibuf,
2114 GOT_IMSG_GITCONFIG_REMOTES_REQUEST, 0, 0, -1, NULL, 0) == -1)
2115 return got_error_from_errno("imsg_compose "
2116 "GITCONFIG_REMOTE_REQUEST");
2118 return flush_imsg(ibuf);
2121 const struct got_error *
2122 got_privsep_send_gitconfig_owner_req(struct imsgbuf *ibuf)
2124 if (imsg_compose(ibuf,
2125 GOT_IMSG_GITCONFIG_OWNER_REQUEST, 0, 0, -1, NULL, 0) == -1)
2126 return got_error_from_errno("imsg_compose "
2127 "GITCONFIG_OWNER_REQUEST");
2129 return flush_imsg(ibuf);
2132 const struct got_error *
2133 got_privsep_recv_gitconfig_str(char **str, struct imsgbuf *ibuf)
2135 const struct got_error *err = NULL;
2141 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
2144 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2146 switch (imsg.hdr.type) {
2147 case GOT_IMSG_GITCONFIG_STR_VAL:
2150 /* datalen does not include terminating \0 */
2151 *str = malloc(datalen + 1);
2153 err = got_error_from_errno("malloc");
2156 memcpy(*str, imsg.data, datalen);
2157 (*str)[datalen] = '\0';
2160 err = got_error(GOT_ERR_PRIVSEP_MSG);
2168 const struct got_error *
2169 got_privsep_recv_gitconfig_int(int *val, struct imsgbuf *ibuf)
2171 const struct got_error *err = NULL;
2174 const size_t min_datalen =
2175 MIN(sizeof(struct got_imsg_error), sizeof(int));
2179 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2182 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2184 switch (imsg.hdr.type) {
2185 case GOT_IMSG_GITCONFIG_INT_VAL:
2186 if (datalen != sizeof(*val)) {
2187 err = got_error(GOT_ERR_PRIVSEP_LEN);
2190 memcpy(val, imsg.data, sizeof(*val));
2193 err = got_error(GOT_ERR_PRIVSEP_MSG);
2202 free_remote_data(struct got_remote_repo *remote)
2207 free(remote->fetch_url);
2208 free(remote->send_url);
2209 for (i = 0; i < remote->nfetch_branches; i++)
2210 free(remote->fetch_branches[i]);
2211 free(remote->fetch_branches);
2212 for (i = 0; i < remote->nsend_branches; i++)
2213 free(remote->send_branches[i]);
2214 free(remote->send_branches);
2215 for (i = 0; i < remote->nfetch_refs; i++)
2216 free(remote->fetch_refs[i]);
2217 free(remote->fetch_refs);
2220 const struct got_error *
2221 got_privsep_recv_gitconfig_remotes(struct got_remote_repo **remotes,
2222 int *nremotes, struct imsgbuf *ibuf)
2224 const struct got_error *err = NULL;
2227 struct got_imsg_remotes iremotes;
2228 struct got_imsg_remote iremote;
2232 iremotes.nremotes = 0;
2234 err = got_privsep_recv_imsg(&imsg, ibuf, sizeof(iremotes));
2237 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2239 switch (imsg.hdr.type) {
2240 case GOT_IMSG_GITCONFIG_REMOTES:
2241 if (datalen != sizeof(iremotes)) {
2242 err = got_error(GOT_ERR_PRIVSEP_LEN);
2245 memcpy(&iremotes, imsg.data, sizeof(iremotes));
2246 if (iremotes.nremotes == 0) {
2253 return got_error(GOT_ERR_PRIVSEP_MSG);
2258 *remotes = recallocarray(NULL, 0, iremotes.nremotes, sizeof(**remotes));
2259 if (*remotes == NULL)
2260 return got_error_from_errno("recallocarray");
2262 while (*nremotes < iremotes.nremotes) {
2263 struct got_remote_repo *remote;
2265 err = got_privsep_recv_imsg(&imsg, ibuf, sizeof(iremote));
2268 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2270 switch (imsg.hdr.type) {
2271 case GOT_IMSG_GITCONFIG_REMOTE:
2272 remote = &(*remotes)[*nremotes];
2273 memset(remote, 0, sizeof(*remote));
2274 if (datalen < sizeof(iremote)) {
2275 err = got_error(GOT_ERR_PRIVSEP_LEN);
2278 memcpy(&iremote, imsg.data, sizeof(iremote));
2279 if (iremote.name_len == 0 ||
2280 iremote.fetch_url_len == 0 ||
2281 iremote.send_url_len == 0 ||
2282 (sizeof(iremote) + iremote.name_len +
2283 iremote.fetch_url_len + iremote.send_url_len) > datalen) {
2284 err = got_error(GOT_ERR_PRIVSEP_LEN);
2287 remote->name = strndup(imsg.data + sizeof(iremote),
2289 if (remote->name == NULL) {
2290 err = got_error_from_errno("strndup");
2293 remote->fetch_url = strndup(imsg.data + sizeof(iremote) +
2294 iremote.name_len, iremote.fetch_url_len);
2295 if (remote->fetch_url == NULL) {
2296 err = got_error_from_errno("strndup");
2297 free_remote_data(remote);
2300 remote->send_url = strndup(imsg.data + sizeof(iremote) +
2301 iremote.name_len + iremote.fetch_url_len,
2302 iremote.send_url_len);
2303 if (remote->send_url == NULL) {
2304 err = got_error_from_errno("strndup");
2305 free_remote_data(remote);
2308 remote->mirror_references = iremote.mirror_references;
2309 remote->fetch_all_branches = iremote.fetch_all_branches;
2310 remote->nfetch_branches = 0;
2311 remote->fetch_branches = NULL;
2312 remote->nsend_branches = 0;
2313 remote->send_branches = NULL;
2314 remote->nfetch_refs = 0;
2315 remote->fetch_refs = NULL;
2319 err = got_error(GOT_ERR_PRIVSEP_MSG);
2330 for (i = 0; i < *nremotes; i++)
2331 free_remote_data(&(*remotes)[i]);
2339 const struct got_error *
2340 got_privsep_send_gotconfig_parse_req(struct imsgbuf *ibuf, int fd)
2342 const struct got_error *err = NULL;
2344 if (imsg_compose(ibuf, GOT_IMSG_GOTCONFIG_PARSE_REQUEST, 0, 0, fd,
2346 err = got_error_from_errno("imsg_compose "
2347 "GOTCONFIG_PARSE_REQUEST");
2352 return flush_imsg(ibuf);
2355 const struct got_error *
2356 got_privsep_send_gotconfig_author_req(struct imsgbuf *ibuf)
2358 if (imsg_compose(ibuf,
2359 GOT_IMSG_GOTCONFIG_AUTHOR_REQUEST, 0, 0, -1, NULL, 0) == -1)
2360 return got_error_from_errno("imsg_compose "
2361 "GOTCONFIG_AUTHOR_REQUEST");
2363 return flush_imsg(ibuf);
2366 const struct got_error *
2367 got_privsep_send_gotconfig_remotes_req(struct imsgbuf *ibuf)
2369 if (imsg_compose(ibuf,
2370 GOT_IMSG_GOTCONFIG_REMOTES_REQUEST, 0, 0, -1, NULL, 0) == -1)
2371 return got_error_from_errno("imsg_compose "
2372 "GOTCONFIG_REMOTE_REQUEST");
2374 return flush_imsg(ibuf);
2377 const struct got_error *
2378 got_privsep_recv_gotconfig_str(char **str, struct imsgbuf *ibuf)
2380 const struct got_error *err = NULL;
2386 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
2389 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2391 switch (imsg.hdr.type) {
2392 case GOT_IMSG_ERROR:
2393 err = recv_imsg_error(&imsg, datalen);
2395 case GOT_IMSG_GOTCONFIG_STR_VAL:
2398 /* datalen does not include terminating \0 */
2399 *str = malloc(datalen + 1);
2401 err = got_error_from_errno("malloc");
2404 memcpy(*str, imsg.data, datalen);
2405 (*str)[datalen] = '\0';
2408 err = got_error(GOT_ERR_PRIVSEP_MSG);
2416 const struct got_error *
2417 got_privsep_recv_gotconfig_remotes(struct got_remote_repo **remotes,
2418 int *nremotes, struct imsgbuf *ibuf)
2420 const struct got_error *err = NULL;
2423 struct got_imsg_remotes iremotes;
2424 struct got_imsg_remote iremote;
2425 const size_t min_datalen =
2426 MIN(sizeof(struct got_imsg_error), sizeof(iremotes));
2430 iremotes.nremotes = 0;
2432 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2435 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2437 switch (imsg.hdr.type) {
2438 case GOT_IMSG_ERROR:
2439 err = recv_imsg_error(&imsg, datalen);
2441 case GOT_IMSG_GOTCONFIG_REMOTES:
2442 if (datalen != sizeof(iremotes)) {
2443 err = got_error(GOT_ERR_PRIVSEP_LEN);
2446 memcpy(&iremotes, imsg.data, sizeof(iremotes));
2447 if (iremotes.nremotes < 0) {
2448 err = got_error(GOT_ERR_PRIVSEP_LEN);
2451 if (iremotes.nremotes == 0) {
2458 return got_error(GOT_ERR_PRIVSEP_MSG);
2463 *remotes = recallocarray(NULL, 0, iremotes.nremotes, sizeof(**remotes));
2464 if (*remotes == NULL)
2465 return got_error_from_errno("recallocarray");
2467 while (*nremotes < iremotes.nremotes) {
2468 struct got_remote_repo *remote;
2469 const size_t min_datalen =
2470 MIN(sizeof(struct got_imsg_error), sizeof(iremote));
2473 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2476 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2478 switch (imsg.hdr.type) {
2479 case GOT_IMSG_ERROR:
2480 err = recv_imsg_error(&imsg, datalen);
2482 case GOT_IMSG_GOTCONFIG_REMOTE:
2483 remote = &(*remotes)[*nremotes];
2484 memset(remote, 0, sizeof(*remote));
2485 if (datalen < sizeof(iremote)) {
2486 err = got_error(GOT_ERR_PRIVSEP_LEN);
2489 memcpy(&iremote, imsg.data, sizeof(iremote));
2490 if (iremote.name_len == 0 ||
2491 (iremote.fetch_url_len == 0 &&
2492 iremote.send_url_len == 0) ||
2493 (sizeof(iremote) + iremote.name_len +
2494 iremote.fetch_url_len + iremote.send_url_len) >
2496 err = got_error(GOT_ERR_PRIVSEP_LEN);
2499 remote->name = strndup(imsg.data + sizeof(iremote),
2501 if (remote->name == NULL) {
2502 err = got_error_from_errno("strndup");
2505 remote->fetch_url = strndup(imsg.data +
2506 sizeof(iremote) + iremote.name_len,
2507 iremote.fetch_url_len);
2508 if (remote->fetch_url == NULL) {
2509 err = got_error_from_errno("strndup");
2510 free_remote_data(remote);
2513 remote->send_url = strndup(imsg.data +
2514 sizeof(iremote) + iremote.name_len +
2515 iremote.fetch_url_len, iremote.send_url_len);
2516 if (remote->send_url == NULL) {
2517 err = got_error_from_errno("strndup");
2518 free_remote_data(remote);
2521 remote->mirror_references = iremote.mirror_references;
2522 remote->fetch_all_branches = iremote.fetch_all_branches;
2523 if (iremote.nfetch_branches > 0) {
2524 remote->fetch_branches = recallocarray(NULL, 0,
2525 iremote.nfetch_branches, sizeof(char *));
2526 if (remote->fetch_branches == NULL) {
2527 err = got_error_from_errno("calloc");
2528 free_remote_data(remote);
2532 remote->nfetch_branches = 0;
2533 for (i = 0; i < iremote.nfetch_branches; i++) {
2535 err = got_privsep_recv_gotconfig_str(&branch,
2538 free_remote_data(remote);
2541 remote->fetch_branches[i] = branch;
2542 remote->nfetch_branches++;
2544 if (iremote.nsend_branches > 0) {
2545 remote->send_branches = recallocarray(NULL, 0,
2546 iremote.nsend_branches, sizeof(char *));
2547 if (remote->send_branches == NULL) {
2548 err = got_error_from_errno("calloc");
2549 free_remote_data(remote);
2553 remote->nsend_branches = 0;
2554 for (i = 0; i < iremote.nsend_branches; i++) {
2556 err = got_privsep_recv_gotconfig_str(&branch,
2559 free_remote_data(remote);
2562 remote->send_branches[i] = branch;
2563 remote->nsend_branches++;
2565 if (iremote.nfetch_refs > 0) {
2566 remote->fetch_refs = recallocarray(NULL, 0,
2567 iremote.nfetch_refs, sizeof(char *));
2568 if (remote->fetch_refs == NULL) {
2569 err = got_error_from_errno("calloc");
2570 free_remote_data(remote);
2574 remote->nfetch_refs = 0;
2575 for (i = 0; i < iremote.nfetch_refs; i++) {
2577 err = got_privsep_recv_gotconfig_str(&ref,
2580 free_remote_data(remote);
2583 remote->fetch_refs[i] = ref;
2584 remote->nfetch_refs++;
2589 err = got_error(GOT_ERR_PRIVSEP_MSG);
2600 for (i = 0; i < *nremotes; i++)
2601 free_remote_data(&(*remotes)[i]);
2609 const struct got_error *
2610 got_privsep_send_commit_traversal_request(struct imsgbuf *ibuf,
2611 struct got_object_id *id, int idx, const char *path)
2614 size_t path_len = strlen(path) + 1;
2616 wbuf = imsg_create(ibuf, GOT_IMSG_COMMIT_TRAVERSAL_REQUEST, 0, 0,
2617 sizeof(struct got_imsg_commit_traversal_request) + path_len);
2619 return got_error_from_errno(
2620 "imsg_create COMMIT_TRAVERSAL_REQUEST");
2621 if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1)
2622 return got_error_from_errno("imsg_add "
2623 "COMMIT_TRAVERSAL_REQUEST");
2624 if (imsg_add(wbuf, &idx, sizeof(idx)) == -1)
2625 return got_error_from_errno("imsg_add "
2626 "COMMIT_TRAVERSAL_REQUEST");
2627 if (imsg_add(wbuf, path, path_len) == -1)
2628 return got_error_from_errno("imsg_add "
2629 "COMMIT_TRAVERSAL_REQUEST");
2632 imsg_close(ibuf, wbuf);
2634 return flush_imsg(ibuf);
2637 const struct got_error *
2638 got_privsep_recv_traversed_commits(struct got_commit_object **changed_commit,
2639 struct got_object_id **changed_commit_id,
2640 struct got_object_id_queue *commit_ids, struct imsgbuf *ibuf)
2642 const struct got_error *err = NULL;
2644 struct got_imsg_traversed_commits *icommits;
2648 *changed_commit = NULL;
2649 *changed_commit_id = NULL;
2652 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
2656 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2657 switch (imsg.hdr.type) {
2658 case GOT_IMSG_TRAVERSED_COMMITS:
2659 icommits = imsg.data;
2660 if (datalen != sizeof(*icommits) +
2661 icommits->ncommits * SHA1_DIGEST_LENGTH) {
2662 err = got_error(GOT_ERR_PRIVSEP_LEN);
2665 for (i = 0; i < icommits->ncommits; i++) {
2666 struct got_object_qid *qid;
2667 uint8_t *sha1 = (uint8_t *)imsg.data +
2668 sizeof(*icommits) + i * SHA1_DIGEST_LENGTH;
2669 err = got_object_qid_alloc_partial(&qid);
2672 memcpy(qid->id.sha1, sha1, SHA1_DIGEST_LENGTH);
2673 STAILQ_INSERT_TAIL(commit_ids, qid, entry);
2675 /* The last commit may contain a change. */
2676 if (i == icommits->ncommits - 1) {
2677 *changed_commit_id =
2678 got_object_id_dup(&qid->id);
2679 if (*changed_commit_id == NULL) {
2680 err = got_error_from_errno(
2681 "got_object_id_dup");
2687 case GOT_IMSG_COMMIT:
2688 if (*changed_commit_id == NULL) {
2689 err = got_error(GOT_ERR_PRIVSEP_MSG);
2692 err = get_commit_from_imsg(changed_commit, &imsg,
2695 case GOT_IMSG_COMMIT_TRAVERSAL_DONE:
2699 err = got_error(GOT_ERR_PRIVSEP_MSG);
2709 got_object_id_queue_free(commit_ids);
2713 const struct got_error *
2714 got_privsep_send_enumerated_tree(size_t *totlen, struct imsgbuf *ibuf,
2715 struct got_object_id *tree_id, const char *path,
2716 struct got_parsed_tree_entry *entries, int nentries)
2718 const struct got_error *err = NULL;
2720 size_t path_len = strlen(path);
2723 msglen = sizeof(struct got_imsg_enumerated_tree) + path_len;
2724 wbuf = imsg_create(ibuf, GOT_IMSG_ENUMERATED_TREE, 0, 0, msglen);
2726 return got_error_from_errno("imsg_create ENUMERATED_TREE");
2728 if (imsg_add(wbuf, tree_id->sha1, SHA1_DIGEST_LENGTH) == -1)
2729 return got_error_from_errno("imsg_add ENUMERATED_TREE");
2730 if (imsg_add(wbuf, &nentries, sizeof(nentries)) == -1)
2731 return got_error_from_errno("imsg_add ENUMERATED_TREE");
2732 if (imsg_add(wbuf, path, path_len) == -1)
2733 return got_error_from_errno("imsg_add ENUMERATED_TREE");
2736 imsg_close(ibuf, wbuf);
2739 err = send_tree_entries(ibuf, entries, nentries);
2744 return flush_imsg(ibuf);
2747 const struct got_error *
2748 got_privsep_send_object_enumeration_request(struct imsgbuf *ibuf)
2750 if (imsg_compose(ibuf, GOT_IMSG_OBJECT_ENUMERATION_REQUEST,
2751 0, 0, -1, NULL, 0) == -1)
2752 return got_error_from_errno("imsg_compose "
2753 "OBJECT_ENUMERATION_REQUEST");
2755 return flush_imsg(ibuf);
2758 const struct got_error *
2759 got_privsep_send_object_enumeration_done(struct imsgbuf *ibuf)
2761 if (imsg_compose(ibuf, GOT_IMSG_OBJECT_ENUMERATION_DONE,
2762 0, 0, -1, NULL, 0) == -1)
2763 return got_error_from_errno("imsg_compose "
2764 "OBJECT_ENUMERATION_DONE");
2766 return flush_imsg(ibuf);
2769 const struct got_error *
2770 got_privsep_send_object_enumeration_incomplete(struct imsgbuf *ibuf)
2772 if (imsg_compose(ibuf, GOT_IMSG_OBJECT_ENUMERATION_INCOMPLETE,
2773 0, 0, -1, NULL, 0) == -1)
2774 return got_error_from_errno("imsg_compose "
2775 "OBJECT_ENUMERATION_INCOMPLETE");
2777 return flush_imsg(ibuf);
2780 const struct got_error *
2781 got_privsep_send_enumerated_commit(struct imsgbuf *ibuf,
2782 struct got_object_id *id, time_t mtime)
2786 wbuf = imsg_create(ibuf, GOT_IMSG_ENUMERATED_COMMIT, 0, 0,
2787 sizeof(struct got_imsg_enumerated_commit) + SHA1_DIGEST_LENGTH);
2789 return got_error_from_errno("imsg_create ENUMERATED_COMMIT");
2791 /* Keep in sync with struct got_imsg_enumerated_commit! */
2792 if (imsg_add(wbuf, id, SHA1_DIGEST_LENGTH) == -1)
2793 return got_error_from_errno("imsg_add ENUMERATED_COMMIT");
2794 if (imsg_add(wbuf, &mtime, sizeof(mtime)) == -1)
2795 return got_error_from_errno("imsg_add ENUMERATED_COMMIT");
2798 imsg_close(ibuf, wbuf);
2799 /* Don't flush yet, tree entries or ENUMERATION_DONE will follow. */
2803 const struct got_error *
2804 got_privsep_recv_enumerated_objects(int *found_all_objects,
2805 struct imsgbuf *ibuf,
2806 got_object_enumerate_commit_cb cb_commit,
2807 got_object_enumerate_tree_cb cb_tree, void *cb_arg,
2808 struct got_repository *repo)
2810 const struct got_error *err = NULL;
2812 struct got_imsg_enumerated_commit *icommit = NULL;
2813 struct got_object_id commit_id;
2814 int have_commit = 0;
2816 struct got_tree_object tree;
2817 struct got_imsg_enumerated_tree *itree;
2818 struct got_object_id tree_id;
2819 char *path = NULL, *canon_path = NULL;
2820 size_t datalen, path_len;
2824 *found_all_objects = 0;
2825 memset(&tree, 0, sizeof(tree));
2828 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
2832 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2833 switch (imsg.hdr.type) {
2834 case GOT_IMSG_ENUMERATED_COMMIT:
2835 if (have_commit && nentries != -1) {
2836 err = got_error(GOT_ERR_PRIVSEP_MSG);
2839 if (datalen != sizeof(*icommit)) {
2840 err = got_error(GOT_ERR_PRIVSEP_LEN);
2843 icommit = (struct got_imsg_enumerated_commit *)imsg.data;
2844 memcpy(commit_id.sha1, icommit->id, SHA1_DIGEST_LENGTH);
2845 mtime = icommit->mtime;
2848 case GOT_IMSG_ENUMERATED_TREE:
2849 /* Should be preceeded by GOT_IMSG_ENUMERATED_COMMIT. */
2851 err = got_error(GOT_ERR_PRIVSEP_MSG);
2854 if (datalen < sizeof(*itree)) {
2855 err = got_error(GOT_ERR_PRIVSEP_LEN);
2859 path_len = datalen - sizeof(*itree);
2860 if (path_len == 0) {
2861 err = got_error(GOT_ERR_PRIVSEP_LEN);
2864 memcpy(tree_id.sha1, itree->id, sizeof(tree_id.sha1));
2866 path = malloc(path_len + 1);
2868 err = got_error_from_errno("malloc");
2872 canon_path = malloc(path_len + 1);
2873 if (canon_path == NULL) {
2874 err = got_error_from_errno("malloc");
2877 memcpy(path, (uint8_t *)imsg.data + sizeof(*itree),
2879 path[path_len] = '\0';
2880 if (!got_path_is_absolute(path)) {
2881 err = got_error(GOT_ERR_BAD_PATH);
2884 if (got_path_is_root_dir(path)) {
2885 /* XXX check what got_canonpath() does wrong */
2886 canon_path[0] = '/';
2887 canon_path[1] = '\0';
2889 err = got_canonpath(path, canon_path,
2894 if (strcmp(path, canon_path) != 0) {
2895 err = got_error(GOT_ERR_BAD_PATH);
2898 if (nentries != -1) {
2899 err = got_error(GOT_ERR_PRIVSEP_MSG);
2902 if (itree->nentries < -1) {
2903 err = got_error(GOT_ERR_PRIVSEP_MSG);
2906 if (itree->nentries == -1) {
2907 /* Tree was not found in pack file. */
2908 err = cb_tree(cb_arg, NULL, mtime, &tree_id,
2912 if (itree->nentries > INT_MAX) {
2913 err = got_error(GOT_ERR_PRIVSEP_LEN);
2916 tree.entries = calloc(itree->nentries,
2917 sizeof(struct got_tree_entry));
2918 if (tree.entries == NULL) {
2919 err = got_error_from_errno("calloc");
2922 if (itree->nentries == 0) {
2923 err = cb_tree(cb_arg, &tree, mtime, &tree_id,
2928 /* Prepare for next tree. */
2930 memset(&tree, 0, sizeof(tree));
2933 tree.nentries = itree->nentries;
2937 case GOT_IMSG_TREE_ENTRIES:
2938 /* Should be preceeded by GOT_IMSG_ENUMERATED_TREE. */
2939 if (nentries <= -1) {
2940 err = got_error(GOT_ERR_PRIVSEP_MSG);
2943 err = recv_tree_entries(imsg.data, datalen,
2947 if (tree.nentries == nentries) {
2948 err = cb_tree(cb_arg, &tree, mtime, &tree_id,
2953 /* Prepare for next tree. */
2955 memset(&tree, 0, sizeof(tree));
2959 case GOT_IMSG_TREE_ENUMERATION_DONE:
2960 /* All trees have been found and traversed. */
2961 if (!have_commit || path == NULL || nentries != -1) {
2962 err = got_error(GOT_ERR_PRIVSEP_MSG);
2965 err = cb_commit(cb_arg, mtime, &commit_id, repo);
2970 case GOT_IMSG_OBJECT_ENUMERATION_DONE:
2971 *found_all_objects = 1;
2974 case GOT_IMSG_OBJECT_ENUMERATION_INCOMPLETE:
2978 err = got_error(GOT_ERR_PRIVSEP_MSG);
2993 const struct got_error *
2994 got_privsep_send_raw_delta_req(struct imsgbuf *ibuf, int idx,
2995 struct got_object_id *id)
2997 struct got_imsg_raw_delta_request dreq;
2999 memset(&dreq, 0, sizeof(dreq));
3001 memcpy(dreq.id, id->sha1, SHA1_DIGEST_LENGTH);
3003 if (imsg_compose(ibuf, GOT_IMSG_RAW_DELTA_REQUEST, 0, 0, -1,
3004 &dreq, sizeof(dreq)) == -1)
3005 return got_error_from_errno("imsg_compose RAW_DELTA_REQUEST");
3007 return flush_imsg(ibuf);
3010 const struct got_error *
3011 got_privsep_send_raw_delta_outfd(struct imsgbuf *ibuf, int fd)
3013 return send_fd(ibuf, GOT_IMSG_RAW_DELTA_OUTFD, fd);
3016 const struct got_error *
3017 got_privsep_send_raw_delta(struct imsgbuf *ibuf, uint64_t base_size,
3018 uint64_t result_size, off_t delta_size, off_t delta_compressed_size,
3019 off_t delta_offset, off_t delta_out_offset, struct got_object_id *base_id)
3021 struct got_imsg_raw_delta idelta;
3024 memset(&idelta, 0, sizeof(idelta));
3025 idelta.base_size = base_size;
3026 idelta.result_size = result_size;
3027 idelta.delta_size = delta_size;
3028 idelta.delta_compressed_size = delta_compressed_size;
3029 idelta.delta_offset = delta_offset;
3030 idelta.delta_out_offset = delta_out_offset;
3031 memcpy(idelta.base_id, base_id->sha1, SHA1_DIGEST_LENGTH);
3033 ret = imsg_compose(ibuf, GOT_IMSG_RAW_DELTA, 0, 0, -1,
3034 &idelta, sizeof(idelta));
3036 return got_error_from_errno("imsg_compose RAW_DELTA");
3038 return flush_imsg(ibuf);
3041 const struct got_error *
3042 got_privsep_recv_raw_delta(uint64_t *base_size, uint64_t *result_size,
3043 off_t *delta_size, off_t *delta_compressed_size, off_t *delta_offset,
3044 off_t *delta_out_offset, struct got_object_id **base_id, struct imsgbuf *ibuf)
3046 const struct got_error *err = NULL;
3048 struct got_imsg_raw_delta *delta;
3054 *delta_compressed_size = 0;
3056 *delta_out_offset = 0;
3059 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
3063 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
3065 switch (imsg.hdr.type) {
3066 case GOT_IMSG_RAW_DELTA:
3067 if (datalen != sizeof(*delta)) {
3068 err = got_error(GOT_ERR_PRIVSEP_LEN);
3072 *base_size = delta->base_size;
3073 *result_size = delta->result_size;
3074 *delta_size = delta->delta_size;
3075 *delta_compressed_size = delta->delta_compressed_size;
3076 *delta_offset = delta->delta_offset;
3077 *delta_out_offset = delta->delta_out_offset;
3078 *base_id = calloc(1, sizeof(**base_id));
3079 if (*base_id == NULL) {
3080 err = got_error_from_errno("malloc");
3083 memcpy((*base_id)->sha1, delta->base_id, SHA1_DIGEST_LENGTH);
3086 err = got_error(GOT_ERR_PRIVSEP_MSG);
3099 static const struct got_error *
3100 send_idlist(struct imsgbuf *ibuf, struct got_object_id **ids, size_t nids)
3102 const struct got_error *err = NULL;
3103 struct got_imsg_object_idlist idlist;
3107 memset(&idlist, 0, sizeof(idlist));
3109 if (nids > GOT_IMSG_OBJ_ID_LIST_MAX_NIDS)
3110 return got_error(GOT_ERR_NO_SPACE);
3112 wbuf = imsg_create(ibuf, GOT_IMSG_OBJ_ID_LIST, 0, 0,
3113 sizeof(idlist) + nids * sizeof(**ids));
3115 err = got_error_from_errno("imsg_create OBJ_ID_LIST");
3120 if (imsg_add(wbuf, &idlist, sizeof(idlist)) == -1)
3121 return got_error_from_errno("imsg_add OBJ_ID_LIST");
3123 for (i = 0; i < nids; i++) {
3124 struct got_object_id *id = ids[i];
3125 if (imsg_add(wbuf, id, sizeof(*id)) == -1)
3126 return got_error_from_errno("imsg_add OBJ_ID_LIST");
3130 imsg_close(ibuf, wbuf);
3132 return flush_imsg(ibuf);
3135 const struct got_error *
3136 got_privsep_send_object_idlist(struct imsgbuf *ibuf,
3137 struct got_object_id **ids, size_t nids)
3139 const struct got_error *err = NULL;
3140 struct got_object_id *idlist[GOT_IMSG_OBJ_ID_LIST_MAX_NIDS];
3143 for (i = 0; i < nids; i++) {
3144 idlist[i % nitems(idlist)] = ids[i];
3146 if (queued >= nitems(idlist)) {
3147 err = send_idlist(ibuf, idlist, queued);
3155 err = send_idlist(ibuf, idlist, queued);
3163 const struct got_error *
3164 got_privsep_send_object_idlist_done(struct imsgbuf *ibuf)
3166 if (imsg_compose(ibuf, GOT_IMSG_OBJ_ID_LIST_DONE, 0, 0, -1, NULL, 0)
3168 return got_error_from_errno("imsg_compose OBJ_ID_LIST_DONE");
3170 return flush_imsg(ibuf);
3173 const struct got_error *
3174 got_privsep_recv_object_idlist(int *done, struct got_object_id **ids,
3175 size_t *nids, struct imsgbuf *ibuf)
3177 const struct got_error *err = NULL;
3179 struct got_imsg_object_idlist *idlist;
3186 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
3190 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
3191 switch (imsg.hdr.type) {
3192 case GOT_IMSG_OBJ_ID_LIST:
3193 if (datalen < sizeof(*idlist)) {
3194 err = got_error(GOT_ERR_PRIVSEP_LEN);
3198 if (idlist->nids > GOT_IMSG_OBJ_ID_LIST_MAX_NIDS ||
3199 idlist->nids * sizeof(**ids) > datalen - sizeof(*idlist)) {
3200 err = got_error(GOT_ERR_PRIVSEP_LEN);
3203 *nids = idlist->nids;
3204 *ids = calloc(*nids, sizeof(**ids));
3206 err = got_error_from_errno("calloc");
3209 memcpy(*ids, (uint8_t *)imsg.data + sizeof(*idlist),
3210 *nids * sizeof(**ids));
3212 case GOT_IMSG_OBJ_ID_LIST_DONE:
3216 err = got_error(GOT_ERR_PRIVSEP_MSG);
3225 const struct got_error *
3226 got_privsep_send_delta_reuse_req(struct imsgbuf *ibuf)
3228 if (imsg_compose(ibuf, GOT_IMSG_DELTA_REUSE_REQUEST, 0, 0, -1, NULL, 0)
3230 return got_error_from_errno("imsg_compose DELTA_REUSE_REQUEST");
3232 return flush_imsg(ibuf);
3235 const struct got_error *
3236 got_privsep_send_reused_deltas(struct imsgbuf *ibuf,
3237 struct got_imsg_reused_delta *deltas, size_t ndeltas)
3239 const struct got_error *err = NULL;
3241 struct got_imsg_reused_deltas ideltas;
3244 memset(&ideltas, 0, sizeof(ideltas));
3246 if (ndeltas > GOT_IMSG_REUSED_DELTAS_MAX_NDELTAS)
3247 return got_error(GOT_ERR_NO_SPACE);
3249 wbuf = imsg_create(ibuf, GOT_IMSG_REUSED_DELTAS, 0, 0,
3250 sizeof(ideltas) + ndeltas * sizeof(*deltas));
3252 err = got_error_from_errno("imsg_create REUSED_DELTAS");
3256 ideltas.ndeltas = ndeltas;
3257 if (imsg_add(wbuf, &ideltas, sizeof(ideltas)) == -1)
3258 return got_error_from_errno("imsg_add REUSED_DELTAS");
3260 for (i = 0; i < ndeltas; i++) {
3261 struct got_imsg_reused_delta *delta = &deltas[i];
3262 if (imsg_add(wbuf, delta, sizeof(*delta)) == -1)
3263 return got_error_from_errno("imsg_add REUSED_DELTAS");
3267 imsg_close(ibuf, wbuf);
3269 return flush_imsg(ibuf);
3272 const struct got_error *
3273 got_privsep_send_reused_deltas_done(struct imsgbuf *ibuf)
3275 if (imsg_compose(ibuf, GOT_IMSG_DELTA_REUSE_DONE, 0, 0, -1, NULL, 0)
3277 return got_error_from_errno("imsg_compose DELTA_REUSE_DONE");
3279 return flush_imsg(ibuf);
3282 const struct got_error *
3283 got_privsep_recv_reused_deltas(int *done, struct got_imsg_reused_delta *deltas,
3284 size_t *ndeltas, struct imsgbuf *ibuf)
3286 const struct got_error *err = NULL;
3288 struct got_imsg_reused_deltas *ideltas;
3294 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
3298 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
3299 switch (imsg.hdr.type) {
3300 case GOT_IMSG_REUSED_DELTAS:
3301 if (datalen < sizeof(*ideltas)) {
3302 err = got_error(GOT_ERR_PRIVSEP_LEN);
3305 ideltas = imsg.data;
3306 if (ideltas->ndeltas > GOT_IMSG_OBJ_ID_LIST_MAX_NIDS ||
3307 ideltas->ndeltas * sizeof(*deltas) >
3308 datalen - sizeof(*ideltas)) {
3309 err = got_error(GOT_ERR_PRIVSEP_LEN);
3312 *ndeltas = ideltas->ndeltas;
3313 memcpy(deltas, (uint8_t *)imsg.data + sizeof(*ideltas),
3314 *ndeltas * sizeof(*deltas));
3316 case GOT_IMSG_DELTA_REUSE_DONE:
3320 err = got_error(GOT_ERR_PRIVSEP_MSG);
3329 const struct got_error *
3330 got_privsep_unveil_exec_helpers(void)
3332 const char *helpers[] = {
3333 GOT_PATH_PROG_READ_PACK,
3334 GOT_PATH_PROG_READ_OBJECT,
3335 GOT_PATH_PROG_READ_COMMIT,
3336 GOT_PATH_PROG_READ_TREE,
3337 GOT_PATH_PROG_READ_BLOB,
3338 GOT_PATH_PROG_READ_TAG,
3339 GOT_PATH_PROG_READ_GITCONFIG,
3340 GOT_PATH_PROG_READ_GOTCONFIG,
3341 GOT_PATH_PROG_READ_PATCH,
3342 GOT_PATH_PROG_FETCH_PACK,
3343 GOT_PATH_PROG_INDEX_PACK,
3344 GOT_PATH_PROG_SEND_PACK,
3348 for (i = 0; i < nitems(helpers); i++) {
3349 if (unveil(helpers[i], "x") == 0)
3351 return got_error_from_errno2("unveil", helpers[i]);
3358 got_privsep_exec_child(int imsg_fds[2], const char *path, const char *repo_path)
3360 if (close(imsg_fds[0]) == -1) {
3361 fprintf(stderr, "%s: %s\n", getprogname(), strerror(errno));
3365 if (dup2(imsg_fds[1], GOT_IMSG_FD_CHILD) == -1) {
3366 fprintf(stderr, "%s: %s\n", getprogname(), strerror(errno));
3370 closefrom(GOT_IMSG_FD_CHILD + 1);
3372 if (execl(path, path, repo_path, (char *)NULL) == -1) {
3373 fprintf(stderr, "%s: %s: %s\n", getprogname(), path,