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"
51 #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
55 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
58 static const struct got_error *
59 poll_fd(int fd, int events, int timeout)
67 pfd[0].events = events;
72 if (sigemptyset(&sigset) == -1)
73 return got_error_from_errno("sigemptyset");
74 if (sigaddset(&sigset, SIGWINCH) == -1)
75 return got_error_from_errno("sigaddset");
77 n = ppoll(pfd, 1, timeout == INFTIM ? NULL : &ts, &sigset);
79 return got_error_from_errno("ppoll");
81 return got_error(GOT_ERR_TIMEOUT);
82 if (pfd[0].revents & (POLLERR | POLLNVAL))
83 return got_error_from_errno("poll error");
84 if (pfd[0].revents & (events | POLLHUP))
87 return got_error(GOT_ERR_INTERRUPT);
90 static const struct got_error *
91 read_imsg(struct imsgbuf *ibuf)
93 const struct got_error *err;
96 err = poll_fd(ibuf->fd, POLLIN, INFTIM);
102 if (errno == EAGAIN) /* Could be a file-descriptor leak. */
103 return got_error(GOT_ERR_PRIVSEP_NO_FD);
104 return got_error(GOT_ERR_PRIVSEP_READ);
107 return got_error(GOT_ERR_PRIVSEP_PIPE);
112 const struct got_error *
113 got_privsep_wait_for_child(pid_t pid)
117 if (waitpid(pid, &child_status, 0) == -1)
118 return got_error_from_errno("waitpid");
120 if (!WIFEXITED(child_status))
121 return got_error(GOT_ERR_PRIVSEP_DIED);
123 if (WEXITSTATUS(child_status) != 0)
124 return got_error(GOT_ERR_PRIVSEP_EXIT);
129 static const struct got_error *
130 recv_imsg_error(struct imsg *imsg, size_t datalen)
132 struct got_imsg_error *ierr;
134 if (datalen != sizeof(*ierr))
135 return got_error(GOT_ERR_PRIVSEP_LEN);
138 if (ierr->code == GOT_ERR_ERRNO) {
139 static struct got_error serr;
140 serr.code = GOT_ERR_ERRNO;
141 serr.msg = strerror(ierr->errno_code);
145 return got_error(ierr->code);
148 const struct got_error *
149 got_privsep_recv_imsg(struct imsg *imsg, struct imsgbuf *ibuf,
152 const struct got_error *err;
155 n = imsg_get(ibuf, imsg);
157 return got_error_from_errno("imsg_get");
160 err = read_imsg(ibuf);
163 n = imsg_get(ibuf, imsg);
165 return got_error_from_errno("imsg_get");
168 if (imsg->hdr.len < IMSG_HEADER_SIZE + min_datalen)
169 return got_error(GOT_ERR_PRIVSEP_LEN);
171 if (imsg->hdr.type == GOT_IMSG_ERROR) {
172 size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
173 return recv_imsg_error(imsg, datalen);
179 /* Attempt to send an error in an imsg. Complain on stderr as a last resort. */
181 got_privsep_send_error(struct imsgbuf *ibuf, const struct got_error *err)
183 const struct got_error *poll_err;
184 struct got_imsg_error ierr;
187 ierr.code = err->code;
188 if (err->code == GOT_ERR_ERRNO)
189 ierr.errno_code = errno;
192 ret = imsg_compose(ibuf, GOT_IMSG_ERROR, 0, 0, -1, &ierr, sizeof(ierr));
194 fprintf(stderr, "%s: error %d \"%s\": imsg_compose: %s\n",
195 getprogname(), err->code, err->msg, strerror(errno));
199 poll_err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
201 fprintf(stderr, "%s: error %d \"%s\": poll: %s\n",
202 getprogname(), err->code, err->msg, poll_err->msg);
206 ret = imsg_flush(ibuf);
208 fprintf(stderr, "%s: error %d \"%s\": imsg_flush: %s\n",
209 getprogname(), err->code, err->msg, strerror(errno));
214 static const struct got_error *
215 flush_imsg(struct imsgbuf *ibuf)
217 const struct got_error *err;
219 err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
223 if (imsg_flush(ibuf) == -1)
224 return got_error_from_errno("imsg_flush");
229 const struct got_error *
230 got_privsep_flush_imsg(struct imsgbuf *ibuf)
232 return flush_imsg(ibuf);
235 const struct got_error *
236 got_privsep_send_stop(int fd)
238 const struct got_error *err = NULL;
241 imsg_init(&ibuf, fd);
243 if (imsg_compose(&ibuf, GOT_IMSG_STOP, 0, 0, -1, NULL, 0) == -1)
244 return got_error_from_errno("imsg_compose STOP");
246 err = flush_imsg(&ibuf);
251 const struct got_error *
252 got_privsep_send_obj_req(struct imsgbuf *ibuf, int fd,
253 struct got_object_id *id)
255 if (imsg_compose(ibuf, GOT_IMSG_OBJECT_REQUEST, 0, 0, fd,
256 id, sizeof(*id)) == -1)
257 return got_error_from_errno("imsg_compose OBJECT_REQUEST");
259 return flush_imsg(ibuf);
262 const struct got_error *
263 got_privsep_send_raw_obj_req(struct imsgbuf *ibuf, int fd,
264 struct got_object_id *id)
266 if (imsg_compose(ibuf, GOT_IMSG_RAW_OBJECT_REQUEST, 0, 0, fd,
267 id, sizeof(*id)) == -1)
268 return got_error_from_errno("imsg_compose RAW_OBJECT_REQUEST");
270 return flush_imsg(ibuf);
273 const struct got_error *
274 got_privsep_send_raw_obj_outfd(struct imsgbuf *ibuf, int outfd)
276 const struct got_error *err = NULL;
278 if (imsg_compose(ibuf, GOT_IMSG_RAW_OBJECT_OUTFD, 0, 0, outfd, NULL, 0)
280 err = got_error_from_errno("imsg_compose RAW_OBJECT_OUTFD");
285 return flush_imsg(ibuf);
288 const struct got_error *
289 got_privsep_send_raw_obj(struct imsgbuf *ibuf, off_t size, size_t hdrlen,
292 const struct got_error *err = NULL;
293 struct got_imsg_raw_obj iobj;
294 size_t len = sizeof(iobj);
297 iobj.hdrlen = hdrlen;
300 if (data && size + hdrlen <= GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX)
301 len += (size_t)size + hdrlen;
303 wbuf = imsg_create(ibuf, GOT_IMSG_RAW_OBJECT, 0, 0, len);
305 err = got_error_from_errno("imsg_create RAW_OBJECT");
309 if (imsg_add(wbuf, &iobj, sizeof(iobj)) == -1) {
310 err = got_error_from_errno("imsg_add RAW_OBJECT");
315 if (data && size + hdrlen <= GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX) {
316 if (imsg_add(wbuf, data, size + hdrlen) == -1) {
317 err = got_error_from_errno("imsg_add RAW_OBJECT");
324 imsg_close(ibuf, wbuf);
326 return flush_imsg(ibuf);
329 const struct got_error *
330 got_privsep_recv_raw_obj(uint8_t **outbuf, off_t *size, size_t *hdrlen,
331 struct imsgbuf *ibuf)
333 const struct got_error *err = NULL;
335 struct got_imsg_raw_obj *iobj;
340 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
344 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
346 switch (imsg.hdr.type) {
347 case GOT_IMSG_RAW_OBJECT:
348 if (datalen < sizeof(*iobj)) {
349 err = got_error(GOT_ERR_PRIVSEP_LEN);
354 *hdrlen = iobj->hdrlen;
356 if (datalen == sizeof(*iobj)) {
357 /* Data has been written to file descriptor. */
361 if (*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 if (pack_idx != -1) { /* commit is packed */
394 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
402 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_REQUEST, 0, 0, fd, data, len)
404 err = got_error_from_errno("imsg_compose COMMIT_REQUEST");
409 return flush_imsg(ibuf);
412 const struct got_error *
413 got_privsep_send_tree_req(struct imsgbuf *ibuf, int fd,
414 struct got_object_id *id, int pack_idx)
416 const struct got_error *err = NULL;
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 err = got_error_from_errno("imsg_add TREE_ENTRY");
435 if (pack_idx != -1) { /* tree is packed */
436 if (imsg_add(wbuf, &pack_idx, sizeof(pack_idx)) == -1) {
437 err = got_error_from_errno("imsg_add TREE_ENTRY");
444 imsg_close(ibuf, wbuf);
446 return flush_imsg(ibuf);
449 const struct got_error *
450 got_privsep_send_tag_req(struct imsgbuf *ibuf, int fd,
451 struct got_object_id *id, int pack_idx)
453 struct got_imsg_packed_object iobj;
457 if (pack_idx != -1) { /* tag is packed */
459 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
467 if (imsg_compose(ibuf, GOT_IMSG_TAG_REQUEST, 0, 0, fd, data, len)
469 return got_error_from_errno("imsg_compose TAG_REQUEST");
471 return flush_imsg(ibuf);
474 const struct got_error *
475 got_privsep_send_blob_req(struct imsgbuf *ibuf, int infd,
476 struct got_object_id *id, int pack_idx)
478 const struct got_error *err = NULL;
479 struct got_imsg_packed_object iobj;
483 if (pack_idx != -1) { /* blob is packed */
485 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
493 if (imsg_compose(ibuf, GOT_IMSG_BLOB_REQUEST, 0, 0, infd, data, len)
495 err = got_error_from_errno("imsg_compose BLOB_REQUEST");
500 return flush_imsg(ibuf);
503 const struct got_error *
504 got_privsep_send_blob_outfd(struct imsgbuf *ibuf, int outfd)
506 const struct got_error *err = NULL;
508 if (imsg_compose(ibuf, GOT_IMSG_BLOB_OUTFD, 0, 0, outfd, NULL, 0)
510 err = got_error_from_errno("imsg_compose BLOB_OUTFD");
515 return flush_imsg(ibuf);
518 static const struct got_error *
519 send_fd(struct imsgbuf *ibuf, int imsg_code, int fd)
521 const struct got_error *err = NULL;
523 if (imsg_compose(ibuf, imsg_code, 0, 0, fd, NULL, 0) == -1) {
524 err = got_error_from_errno("imsg_compose TMPFD");
529 return flush_imsg(ibuf);
532 const struct got_error *
533 got_privsep_send_tmpfd(struct imsgbuf *ibuf, int fd)
535 return send_fd(ibuf, GOT_IMSG_TMPFD, fd);
538 const struct got_error *
539 got_privsep_send_obj(struct imsgbuf *ibuf, struct got_object *obj)
541 struct got_imsg_object iobj;
543 memcpy(iobj.id, obj->id.sha1, sizeof(iobj.id));
544 iobj.type = obj->type;
545 iobj.flags = obj->flags;
546 iobj.hdrlen = obj->hdrlen;
547 iobj.size = obj->size;
548 if (iobj.flags & GOT_OBJ_FLAG_PACKED) {
549 iobj.pack_offset = obj->pack_offset;
550 iobj.pack_idx = obj->pack_idx;
553 if (imsg_compose(ibuf, GOT_IMSG_OBJECT, 0, 0, -1, &iobj, sizeof(iobj))
555 return got_error_from_errno("imsg_compose OBJECT");
557 return flush_imsg(ibuf);
560 const struct got_error *
561 got_privsep_send_fetch_req(struct imsgbuf *ibuf, int fd,
562 struct got_pathlist_head *have_refs, int fetch_all_branches,
563 struct got_pathlist_head *wanted_branches,
564 struct got_pathlist_head *wanted_refs, int list_refs_only, int verbosity)
566 const struct got_error *err = NULL;
569 struct got_pathlist_entry *pe;
570 struct got_imsg_fetch_request fetchreq;
572 memset(&fetchreq, 0, sizeof(fetchreq));
573 fetchreq.fetch_all_branches = fetch_all_branches;
574 fetchreq.list_refs_only = list_refs_only;
575 fetchreq.verbosity = verbosity;
576 TAILQ_FOREACH(pe, have_refs, entry)
577 fetchreq.n_have_refs++;
578 TAILQ_FOREACH(pe, wanted_branches, entry)
579 fetchreq.n_wanted_branches++;
580 TAILQ_FOREACH(pe, wanted_refs, entry)
581 fetchreq.n_wanted_refs++;
582 len = sizeof(struct got_imsg_fetch_request);
583 if (len >= MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
585 return got_error(GOT_ERR_NO_SPACE);
588 if (imsg_compose(ibuf, GOT_IMSG_FETCH_REQUEST, 0, 0, fd,
589 &fetchreq, sizeof(fetchreq)) == -1)
590 return got_error_from_errno(
591 "imsg_compose FETCH_SERVER_PROGRESS");
593 err = flush_imsg(ibuf);
600 TAILQ_FOREACH(pe, have_refs, entry) {
601 const char *name = pe->path;
602 size_t name_len = pe->path_len;
603 struct got_object_id *id = pe->data;
605 len = sizeof(struct got_imsg_fetch_have_ref) + name_len;
606 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_HAVE_REF, 0, 0, len);
608 return got_error_from_errno("imsg_create FETCH_HAVE_REF");
610 /* Keep in sync with struct got_imsg_fetch_have_ref! */
611 if (imsg_add(wbuf, id->sha1, sizeof(id->sha1)) == -1) {
612 err = got_error_from_errno("imsg_add FETCH_HAVE_REF");
616 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1) {
617 err = got_error_from_errno("imsg_add FETCH_HAVE_REF");
621 if (imsg_add(wbuf, name, name_len) == -1) {
622 err = got_error_from_errno("imsg_add FETCH_HAVE_REF");
628 imsg_close(ibuf, wbuf);
629 err = flush_imsg(ibuf);
634 TAILQ_FOREACH(pe, wanted_branches, entry) {
635 const char *name = pe->path;
636 size_t name_len = pe->path_len;
638 len = sizeof(struct got_imsg_fetch_wanted_branch) + name_len;
639 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_WANTED_BRANCH, 0, 0,
642 return got_error_from_errno(
643 "imsg_create FETCH_WANTED_BRANCH");
645 /* Keep in sync with struct got_imsg_fetch_wanted_branch! */
646 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1) {
647 err = got_error_from_errno(
648 "imsg_add FETCH_WANTED_BRANCH");
652 if (imsg_add(wbuf, name, name_len) == -1) {
653 err = got_error_from_errno(
654 "imsg_add FETCH_WANTED_BRANCH");
660 imsg_close(ibuf, wbuf);
661 err = flush_imsg(ibuf);
666 TAILQ_FOREACH(pe, wanted_refs, entry) {
667 const char *name = pe->path;
668 size_t name_len = pe->path_len;
670 len = sizeof(struct got_imsg_fetch_wanted_ref) + name_len;
671 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_WANTED_REF, 0, 0,
674 return got_error_from_errno(
675 "imsg_create FETCH_WANTED_REF");
677 /* Keep in sync with struct got_imsg_fetch_wanted_ref! */
678 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1) {
679 err = got_error_from_errno(
680 "imsg_add FETCH_WANTED_REF");
684 if (imsg_add(wbuf, name, name_len) == -1) {
685 err = got_error_from_errno(
686 "imsg_add FETCH_WANTED_REF");
692 imsg_close(ibuf, wbuf);
693 err = flush_imsg(ibuf);
703 const struct got_error *
704 got_privsep_send_fetch_outfd(struct imsgbuf *ibuf, int fd)
706 return send_fd(ibuf, GOT_IMSG_FETCH_OUTFD, fd);
709 const struct got_error *
710 got_privsep_recv_fetch_progress(int *done, struct got_object_id **id,
711 char **refname, struct got_pathlist_head *symrefs, char **server_progress,
712 off_t *packfile_size, uint8_t *pack_sha1, struct imsgbuf *ibuf)
714 const struct got_error *err = NULL;
717 struct got_imsg_fetch_symrefs *isymrefs = NULL;
725 *server_progress = NULL;
727 memset(pack_sha1, 0, SHA1_DIGEST_LENGTH);
729 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
733 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
734 switch (imsg.hdr.type) {
736 if (datalen < sizeof(struct got_imsg_error)) {
737 err = got_error(GOT_ERR_PRIVSEP_LEN);
740 err = recv_imsg_error(&imsg, datalen);
742 case GOT_IMSG_FETCH_SYMREFS:
743 if (datalen < sizeof(*isymrefs)) {
744 err = got_error(GOT_ERR_PRIVSEP_LEN);
747 if (isymrefs != NULL) {
748 err = got_error(GOT_ERR_PRIVSEP_MSG);
751 isymrefs = (struct got_imsg_fetch_symrefs *)imsg.data;
752 off = sizeof(*isymrefs);
753 remain = datalen - off;
754 for (n = 0; n < isymrefs->nsymrefs; n++) {
755 struct got_imsg_fetch_symref *s;
757 if (remain < sizeof(struct got_imsg_fetch_symref)) {
758 err = got_error(GOT_ERR_PRIVSEP_LEN);
761 s = (struct got_imsg_fetch_symref *)(imsg.data + off);
763 remain -= sizeof(*s);
764 if (remain < s->name_len) {
765 err = got_error(GOT_ERR_PRIVSEP_LEN);
768 name = strndup(imsg.data + off, s->name_len);
770 err = got_error_from_errno("strndup");
774 remain -= s->name_len;
775 if (remain < s->target_len) {
776 err = got_error(GOT_ERR_PRIVSEP_LEN);
780 target = strndup(imsg.data + off, s->target_len);
781 if (target == NULL) {
782 err = got_error_from_errno("strndup");
786 off += s->target_len;
787 remain -= s->target_len;
788 err = got_pathlist_append(symrefs, name, target);
796 case GOT_IMSG_FETCH_REF:
797 if (datalen <= SHA1_DIGEST_LENGTH) {
798 err = got_error(GOT_ERR_PRIVSEP_MSG);
801 *id = malloc(sizeof(**id));
803 err = got_error_from_errno("malloc");
806 memcpy((*id)->sha1, imsg.data, SHA1_DIGEST_LENGTH);
807 *refname = strndup(imsg.data + SHA1_DIGEST_LENGTH,
808 datalen - SHA1_DIGEST_LENGTH);
809 if (*refname == NULL) {
810 err = got_error_from_errno("strndup");
814 case GOT_IMSG_FETCH_SERVER_PROGRESS:
816 err = got_error(GOT_ERR_PRIVSEP_LEN);
819 *server_progress = strndup(imsg.data, datalen);
820 if (*server_progress == NULL) {
821 err = got_error_from_errno("strndup");
824 for (i = 0; i < datalen; i++) {
825 if (!isprint((unsigned char)(*server_progress)[i]) &&
826 !isspace((unsigned char)(*server_progress)[i])) {
827 err = got_error(GOT_ERR_PRIVSEP_MSG);
828 free(*server_progress);
829 *server_progress = NULL;
834 case GOT_IMSG_FETCH_DOWNLOAD_PROGRESS:
835 if (datalen < sizeof(*packfile_size)) {
836 err = got_error(GOT_ERR_PRIVSEP_MSG);
839 memcpy(packfile_size, imsg.data, sizeof(*packfile_size));
841 case GOT_IMSG_FETCH_DONE:
842 if (datalen != SHA1_DIGEST_LENGTH) {
843 err = got_error(GOT_ERR_PRIVSEP_MSG);
846 memcpy(pack_sha1, imsg.data, SHA1_DIGEST_LENGTH);
850 err = got_error(GOT_ERR_PRIVSEP_MSG);
864 static const struct got_error *
865 send_send_ref(const char *name, size_t name_len, struct got_object_id *id,
866 int delete, struct imsgbuf *ibuf)
868 const struct got_error *err = NULL;
872 len = sizeof(struct got_imsg_send_ref) + name_len;
873 wbuf = imsg_create(ibuf, GOT_IMSG_SEND_REF, 0, 0, len);
875 return got_error_from_errno("imsg_create SEND_REF");
877 /* Keep in sync with struct got_imsg_send_ref! */
878 if (imsg_add(wbuf, id->sha1, sizeof(id->sha1)) == -1) {
879 err = got_error_from_errno("imsg_add SEND_REF");
883 if (imsg_add(wbuf, &delete, sizeof(delete)) == -1) {
884 err = got_error_from_errno("imsg_add SEND_REF");
888 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1) {
889 err = got_error_from_errno("imsg_add SEND_REF");
893 if (imsg_add(wbuf, name, name_len) == -1) {
894 err = got_error_from_errno("imsg_add SEND_REF");
900 imsg_close(ibuf, wbuf);
901 return flush_imsg(ibuf);
904 const struct got_error *
905 got_privsep_send_send_req(struct imsgbuf *ibuf, int fd,
906 struct got_pathlist_head *have_refs,
907 struct got_pathlist_head *delete_refs,
910 const struct got_error *err = NULL;
911 struct got_pathlist_entry *pe;
912 struct got_imsg_send_request sendreq;
913 struct got_object_id zero_id;
915 memset(&zero_id, 0, sizeof(zero_id));
916 memset(&sendreq, 0, sizeof(sendreq));
917 sendreq.verbosity = verbosity;
918 TAILQ_FOREACH(pe, have_refs, entry)
920 TAILQ_FOREACH(pe, delete_refs, entry)
922 if (imsg_compose(ibuf, GOT_IMSG_SEND_REQUEST, 0, 0, fd,
923 &sendreq, sizeof(sendreq)) == -1) {
924 err = got_error_from_errno(
925 "imsg_compose FETCH_SERVER_PROGRESS");
929 err = flush_imsg(ibuf);
934 TAILQ_FOREACH(pe, have_refs, entry) {
935 const char *name = pe->path;
936 size_t name_len = pe->path_len;
937 struct got_object_id *id = pe->data;
938 err = send_send_ref(name, name_len, id, 0, ibuf);
943 TAILQ_FOREACH(pe, delete_refs, entry) {
944 const char *name = pe->path;
945 size_t name_len = pe->path_len;
946 err = send_send_ref(name, name_len, &zero_id, 1, ibuf);
951 if (fd != -1 && close(fd) == -1 && err == NULL)
952 err = got_error_from_errno("close");
957 const struct got_error *
958 got_privsep_recv_send_remote_refs(struct got_pathlist_head *remote_refs,
959 struct imsgbuf *ibuf)
961 const struct got_error *err = NULL;
965 struct got_imsg_send_remote_ref iremote_ref;
966 struct got_object_id *id = NULL;
967 char *refname = NULL;
968 struct got_pathlist_entry *new;
971 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
974 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
975 switch (imsg.hdr.type) {
977 if (datalen < sizeof(struct got_imsg_error)) {
978 err = got_error(GOT_ERR_PRIVSEP_LEN);
981 err = recv_imsg_error(&imsg, datalen);
983 case GOT_IMSG_SEND_REMOTE_REF:
984 if (datalen < sizeof(iremote_ref)) {
985 err = got_error(GOT_ERR_PRIVSEP_MSG);
988 memcpy(&iremote_ref, imsg.data, sizeof(iremote_ref));
989 if (datalen != sizeof(iremote_ref) +
990 iremote_ref.name_len) {
991 err = got_error(GOT_ERR_PRIVSEP_MSG);
994 id = malloc(sizeof(*id));
996 err = got_error_from_errno("malloc");
999 memcpy(id->sha1, iremote_ref.id, SHA1_DIGEST_LENGTH);
1000 refname = strndup(imsg.data + sizeof(iremote_ref),
1001 datalen - sizeof(iremote_ref));
1002 if (refname == NULL) {
1003 err = got_error_from_errno("strndup");
1006 err = got_pathlist_insert(&new, remote_refs,
1010 if (new == NULL) { /* duplicate which wasn't inserted */
1017 case GOT_IMSG_SEND_PACK_REQUEST:
1019 err = got_error(GOT_ERR_PRIVSEP_MSG);
1022 /* got-send-pack is now waiting for a pack file. */
1026 err = got_error(GOT_ERR_PRIVSEP_MSG);
1037 const struct got_error *
1038 got_privsep_send_packfd(struct imsgbuf *ibuf, int fd)
1040 return send_fd(ibuf, GOT_IMSG_SEND_PACKFD, fd);
1043 const struct got_error *
1044 got_privsep_recv_send_progress(int *done, off_t *bytes_sent,
1045 int *success, char **refname, struct imsgbuf *ibuf)
1047 const struct got_error *err = NULL;
1050 struct got_imsg_send_ref_status iref_status;
1052 /* Do not reset the current value of 'bytes_sent', it accumulates. */
1057 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1061 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1062 switch (imsg.hdr.type) {
1063 case GOT_IMSG_ERROR:
1064 if (datalen < sizeof(struct got_imsg_error)) {
1065 err = got_error(GOT_ERR_PRIVSEP_LEN);
1068 err = recv_imsg_error(&imsg, datalen);
1070 case GOT_IMSG_SEND_UPLOAD_PROGRESS:
1071 if (datalen < sizeof(*bytes_sent)) {
1072 err = got_error(GOT_ERR_PRIVSEP_MSG);
1075 memcpy(bytes_sent, imsg.data, sizeof(*bytes_sent));
1077 case GOT_IMSG_SEND_REF_STATUS:
1078 if (datalen < sizeof(iref_status)) {
1079 err = got_error(GOT_ERR_PRIVSEP_MSG);
1082 memcpy(&iref_status, imsg.data, sizeof(iref_status));
1083 if (datalen != sizeof(iref_status) + iref_status.name_len) {
1084 err = got_error(GOT_ERR_PRIVSEP_MSG);
1087 *success = iref_status.success;
1088 *refname = strndup(imsg.data + sizeof(iref_status),
1089 iref_status.name_len);
1091 case GOT_IMSG_SEND_DONE:
1093 err = got_error(GOT_ERR_PRIVSEP_MSG);
1099 err = got_error(GOT_ERR_PRIVSEP_MSG);
1107 const struct got_error *
1108 got_privsep_send_index_pack_req(struct imsgbuf *ibuf, uint8_t *pack_sha1,
1111 const struct got_error *err = NULL;
1113 /* Keep in sync with struct got_imsg_index_pack_request */
1114 if (imsg_compose(ibuf, GOT_IMSG_IDXPACK_REQUEST, 0, 0, fd,
1115 pack_sha1, SHA1_DIGEST_LENGTH) == -1) {
1116 err = got_error_from_errno("imsg_compose INDEX_REQUEST");
1120 return flush_imsg(ibuf);
1123 const struct got_error *
1124 got_privsep_send_index_pack_outfd(struct imsgbuf *ibuf, int fd)
1126 return send_fd(ibuf, GOT_IMSG_IDXPACK_OUTFD, fd);
1129 const struct got_error *
1130 got_privsep_recv_index_progress(int *done, int *nobj_total,
1131 int *nobj_indexed, int *nobj_loose, int *nobj_resolved,
1132 struct imsgbuf *ibuf)
1134 const struct got_error *err = NULL;
1136 struct got_imsg_index_pack_progress *iprogress;
1144 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1148 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1149 switch (imsg.hdr.type) {
1150 case GOT_IMSG_ERROR:
1151 if (datalen < sizeof(struct got_imsg_error)) {
1152 err = got_error(GOT_ERR_PRIVSEP_LEN);
1155 err = recv_imsg_error(&imsg, datalen);
1157 case GOT_IMSG_IDXPACK_PROGRESS:
1158 if (datalen < sizeof(*iprogress)) {
1159 err = got_error(GOT_ERR_PRIVSEP_LEN);
1162 iprogress = (struct got_imsg_index_pack_progress *)imsg.data;
1163 *nobj_total = iprogress->nobj_total;
1164 *nobj_indexed = iprogress->nobj_indexed;
1165 *nobj_loose = iprogress->nobj_loose;
1166 *nobj_resolved = iprogress->nobj_resolved;
1168 case GOT_IMSG_IDXPACK_DONE:
1170 err = got_error(GOT_ERR_PRIVSEP_LEN);
1176 err = got_error(GOT_ERR_PRIVSEP_MSG);
1184 const struct got_error *
1185 got_privsep_get_imsg_obj(struct got_object **obj, struct imsg *imsg,
1186 struct imsgbuf *ibuf)
1188 const struct got_error *err = NULL;
1189 struct got_imsg_object *iobj;
1190 size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1192 if (datalen != sizeof(*iobj))
1193 return got_error(GOT_ERR_PRIVSEP_LEN);
1196 *obj = calloc(1, sizeof(**obj));
1198 return got_error_from_errno("calloc");
1200 memcpy((*obj)->id.sha1, iobj->id, SHA1_DIGEST_LENGTH);
1201 (*obj)->type = iobj->type;
1202 (*obj)->flags = iobj->flags;
1203 (*obj)->hdrlen = iobj->hdrlen;
1204 (*obj)->size = iobj->size;
1205 /* path_packfile is handled by caller */
1206 if (iobj->flags & GOT_OBJ_FLAG_PACKED) {
1207 (*obj)->pack_offset = iobj->pack_offset;
1208 (*obj)->pack_idx = iobj->pack_idx;
1214 const struct got_error *
1215 got_privsep_recv_obj(struct got_object **obj, struct imsgbuf *ibuf)
1217 const struct got_error *err = NULL;
1219 const size_t min_datalen =
1220 MIN(sizeof(struct got_imsg_error), sizeof(struct got_imsg_object));
1224 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1228 switch (imsg.hdr.type) {
1229 case GOT_IMSG_OBJECT:
1230 err = got_privsep_get_imsg_obj(obj, &imsg, ibuf);
1233 err = got_error(GOT_ERR_PRIVSEP_MSG);
1242 static const struct got_error *
1243 send_commit_logmsg(struct imsgbuf *ibuf, struct got_commit_object *commit,
1246 const struct got_error *err = NULL;
1247 size_t offset, remain;
1250 remain = logmsg_len;
1251 while (remain > 0) {
1252 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain);
1254 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_LOGMSG, 0, 0, -1,
1255 commit->logmsg + offset, n) == -1) {
1256 err = got_error_from_errno("imsg_compose "
1261 err = flush_imsg(ibuf);
1272 const struct got_error *
1273 got_privsep_send_commit(struct imsgbuf *ibuf, struct got_commit_object *commit)
1275 const struct got_error *err = NULL;
1276 struct got_imsg_commit_object *icommit;
1279 struct got_object_qid *qid;
1280 size_t author_len = strlen(commit->author);
1281 size_t committer_len = strlen(commit->committer);
1282 size_t logmsg_len = strlen(commit->logmsg);
1284 total = sizeof(*icommit) + author_len + committer_len +
1285 commit->nparents * SHA1_DIGEST_LENGTH;
1287 buf = malloc(total);
1289 return got_error_from_errno("malloc");
1291 icommit = (struct got_imsg_commit_object *)buf;
1292 memcpy(icommit->tree_id, commit->tree_id->sha1,
1293 sizeof(icommit->tree_id));
1294 icommit->author_len = author_len;
1295 icommit->author_time = commit->author_time;
1296 icommit->author_gmtoff = commit->author_gmtoff;
1297 icommit->committer_len = committer_len;
1298 icommit->committer_time = commit->committer_time;
1299 icommit->committer_gmtoff = commit->committer_gmtoff;
1300 icommit->logmsg_len = logmsg_len;
1301 icommit->nparents = commit->nparents;
1303 len = sizeof(*icommit);
1304 memcpy(buf + len, commit->author, author_len);
1306 memcpy(buf + len, commit->committer, committer_len);
1307 len += committer_len;
1308 STAILQ_FOREACH(qid, &commit->parent_ids, entry) {
1309 memcpy(buf + len, qid->id, SHA1_DIGEST_LENGTH);
1310 len += SHA1_DIGEST_LENGTH;
1313 if (imsg_compose(ibuf, GOT_IMSG_COMMIT, 0, 0, -1, buf, len) == -1) {
1314 err = got_error_from_errno("imsg_compose COMMIT");
1318 if (logmsg_len == 0 ||
1319 logmsg_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
1320 err = flush_imsg(ibuf);
1324 err = send_commit_logmsg(ibuf, commit, logmsg_len);
1330 static const struct got_error *
1331 get_commit_from_imsg(struct got_commit_object **commit,
1332 struct imsg *imsg, size_t datalen, struct imsgbuf *ibuf)
1334 const struct got_error *err = NULL;
1335 struct got_imsg_commit_object *icommit;
1339 if (datalen < sizeof(*icommit))
1340 return got_error(GOT_ERR_PRIVSEP_LEN);
1342 icommit = imsg->data;
1343 if (datalen != sizeof(*icommit) + icommit->author_len +
1344 icommit->committer_len +
1345 icommit->nparents * SHA1_DIGEST_LENGTH)
1346 return got_error(GOT_ERR_PRIVSEP_LEN);
1348 if (icommit->nparents < 0)
1349 return got_error(GOT_ERR_PRIVSEP_LEN);
1351 len += sizeof(*icommit);
1353 *commit = got_object_commit_alloc_partial();
1354 if (*commit == NULL)
1355 return got_error_from_errno(
1356 "got_object_commit_alloc_partial");
1358 memcpy((*commit)->tree_id->sha1, icommit->tree_id,
1359 SHA1_DIGEST_LENGTH);
1360 (*commit)->author_time = icommit->author_time;
1361 (*commit)->author_gmtoff = icommit->author_gmtoff;
1362 (*commit)->committer_time = icommit->committer_time;
1363 (*commit)->committer_gmtoff = icommit->committer_gmtoff;
1365 if (icommit->author_len == 0) {
1366 (*commit)->author = strdup("");
1367 if ((*commit)->author == NULL) {
1368 err = got_error_from_errno("strdup");
1372 (*commit)->author = malloc(icommit->author_len + 1);
1373 if ((*commit)->author == NULL) {
1374 err = got_error_from_errno("malloc");
1377 memcpy((*commit)->author, imsg->data + len,
1378 icommit->author_len);
1379 (*commit)->author[icommit->author_len] = '\0';
1381 len += icommit->author_len;
1383 if (icommit->committer_len == 0) {
1384 (*commit)->committer = strdup("");
1385 if ((*commit)->committer == NULL) {
1386 err = got_error_from_errno("strdup");
1390 (*commit)->committer =
1391 malloc(icommit->committer_len + 1);
1392 if ((*commit)->committer == NULL) {
1393 err = got_error_from_errno("malloc");
1396 memcpy((*commit)->committer, imsg->data + len,
1397 icommit->committer_len);
1398 (*commit)->committer[icommit->committer_len] = '\0';
1400 len += icommit->committer_len;
1402 if (icommit->logmsg_len == 0) {
1403 (*commit)->logmsg = strdup("");
1404 if ((*commit)->logmsg == NULL) {
1405 err = got_error_from_errno("strdup");
1409 size_t offset = 0, remain = icommit->logmsg_len;
1411 (*commit)->logmsg = malloc(icommit->logmsg_len + 1);
1412 if ((*commit)->logmsg == NULL) {
1413 err = got_error_from_errno("malloc");
1416 while (remain > 0) {
1417 struct imsg imsg_log;
1418 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,
1421 err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
1425 if (imsg_log.hdr.type != GOT_IMSG_COMMIT_LOGMSG) {
1426 err = got_error(GOT_ERR_PRIVSEP_MSG);
1430 memcpy((*commit)->logmsg + offset,
1432 imsg_free(&imsg_log);
1436 (*commit)->logmsg[icommit->logmsg_len] = '\0';
1439 for (i = 0; i < icommit->nparents; i++) {
1440 struct got_object_qid *qid;
1442 err = got_object_qid_alloc_partial(&qid);
1445 memcpy(qid->id, imsg->data + len +
1446 i * SHA1_DIGEST_LENGTH, sizeof(*qid->id));
1447 STAILQ_INSERT_TAIL(&(*commit)->parent_ids, qid, entry);
1448 (*commit)->nparents++;
1452 got_object_commit_close(*commit);
1458 const struct got_error *
1459 got_privsep_recv_commit(struct got_commit_object **commit, struct imsgbuf *ibuf)
1461 const struct got_error *err = NULL;
1464 const size_t min_datalen =
1465 MIN(sizeof(struct got_imsg_error),
1466 sizeof(struct got_imsg_commit_object));
1470 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1474 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1476 switch (imsg.hdr.type) {
1477 case GOT_IMSG_COMMIT:
1478 err = get_commit_from_imsg(commit, &imsg, datalen, ibuf);
1481 err = got_error(GOT_ERR_PRIVSEP_MSG);
1490 const struct got_error *
1491 got_privsep_send_tree(struct imsgbuf *ibuf, struct got_pathlist_head *entries,
1494 const struct got_error *err = NULL;
1495 struct got_imsg_tree_object itree;
1496 struct got_pathlist_entry *pe;
1498 int nimsg; /* number of imsg queued in ibuf */
1500 itree.nentries = nentries;
1501 if (imsg_compose(ibuf, GOT_IMSG_TREE, 0, 0, -1, &itree, sizeof(itree))
1503 return got_error_from_errno("imsg_compose TREE");
1505 totlen = sizeof(itree);
1507 TAILQ_FOREACH(pe, entries, entry) {
1508 const char *name = pe->path;
1509 struct got_parsed_tree_entry *pte = pe->data;
1511 size_t namelen = strlen(name);
1512 size_t len = sizeof(struct got_imsg_tree_entry) + namelen;
1514 if (len > MAX_IMSGSIZE)
1515 return got_error(GOT_ERR_NO_SPACE);
1518 if (totlen + len >= MAX_IMSGSIZE - (IMSG_HEADER_SIZE * nimsg)) {
1519 err = flush_imsg(ibuf);
1525 wbuf = imsg_create(ibuf, GOT_IMSG_TREE_ENTRY, 0, 0, len);
1527 return got_error_from_errno("imsg_create TREE_ENTRY");
1529 /* Keep in sync with struct got_imsg_tree_object definition! */
1530 if (imsg_add(wbuf, pte->id, SHA1_DIGEST_LENGTH) == -1) {
1531 err = got_error_from_errno("imsg_add TREE_ENTRY");
1535 if (imsg_add(wbuf, &pte->mode, sizeof(pte->mode)) == -1) {
1536 err = got_error_from_errno("imsg_add TREE_ENTRY");
1541 if (imsg_add(wbuf, name, namelen) == -1) {
1542 err = got_error_from_errno("imsg_add TREE_ENTRY");
1548 imsg_close(ibuf, wbuf);
1553 return flush_imsg(ibuf);
1556 const struct got_error *
1557 got_privsep_recv_tree(struct got_tree_object **tree, struct imsgbuf *ibuf)
1559 const struct got_error *err = NULL;
1560 const size_t min_datalen =
1561 MIN(sizeof(struct got_imsg_error),
1562 sizeof(struct got_imsg_tree_object));
1563 struct got_imsg_tree_object *itree;
1568 err = read_imsg(ibuf);
1576 struct got_imsg_tree_entry *ite;
1577 struct got_tree_entry *te = NULL;
1579 n = imsg_get(ibuf, &imsg);
1581 if (*tree && (*tree)->nentries != nentries)
1586 if (imsg.hdr.len < IMSG_HEADER_SIZE + min_datalen) {
1588 err = got_error(GOT_ERR_PRIVSEP_LEN);
1592 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1594 switch (imsg.hdr.type) {
1595 case GOT_IMSG_ERROR:
1596 err = recv_imsg_error(&imsg, datalen);
1599 /* This message should only appear once. */
1600 if (*tree != NULL) {
1601 err = got_error(GOT_ERR_PRIVSEP_MSG);
1604 if (datalen != sizeof(*itree)) {
1605 err = got_error(GOT_ERR_PRIVSEP_LEN);
1609 *tree = malloc(sizeof(**tree));
1610 if (*tree == NULL) {
1611 err = got_error_from_errno("malloc");
1614 (*tree)->entries = calloc(itree->nentries,
1615 sizeof(struct got_tree_entry));
1616 if ((*tree)->entries == NULL) {
1617 err = got_error_from_errno("malloc");
1620 (*tree)->nentries = itree->nentries;
1621 (*tree)->refcnt = 0;
1623 case GOT_IMSG_TREE_ENTRY:
1624 /* This message should be preceeded by GOT_IMSG_TREE. */
1625 if (*tree == NULL) {
1626 err = got_error(GOT_ERR_PRIVSEP_MSG);
1629 if (datalen < sizeof(*ite) || datalen > MAX_IMSGSIZE) {
1630 err = got_error(GOT_ERR_PRIVSEP_LEN);
1634 /* Remaining data contains the entry's name. */
1635 datalen -= sizeof(*ite);
1636 if (datalen == 0 || datalen > MAX_IMSGSIZE) {
1637 err = got_error(GOT_ERR_PRIVSEP_LEN);
1642 if (datalen + 1 > sizeof(te->name)) {
1643 err = got_error(GOT_ERR_NO_SPACE);
1646 te = &(*tree)->entries[nentries];
1647 memcpy(te->name, imsg.data + sizeof(*ite), datalen);
1648 te->name[datalen] = '\0';
1650 memcpy(te->id.sha1, ite->id, SHA1_DIGEST_LENGTH);
1651 te->mode = ite->mode;
1656 err = got_error(GOT_ERR_PRIVSEP_MSG);
1665 if (*tree && (*tree)->nentries != nentries) {
1667 err = got_error(GOT_ERR_PRIVSEP_LEN);
1668 got_object_tree_close(*tree);
1675 const struct got_error *
1676 got_privsep_send_blob(struct imsgbuf *ibuf, size_t size, size_t hdrlen,
1677 const uint8_t *data)
1679 struct got_imsg_blob iblob;
1682 iblob.hdrlen = hdrlen;
1687 if (size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX)
1688 return got_error(GOT_ERR_NO_SPACE);
1690 buf = malloc(sizeof(iblob) + size);
1692 return got_error_from_errno("malloc");
1694 memcpy(buf, &iblob, sizeof(iblob));
1695 memcpy(buf + sizeof(iblob), data, size);
1696 if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, buf,
1697 sizeof(iblob) + size) == -1) {
1699 return got_error_from_errno("imsg_compose BLOB");
1703 /* Data has already been written to file descriptor. */
1704 if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, &iblob,
1705 sizeof(iblob)) == -1)
1706 return got_error_from_errno("imsg_compose BLOB");
1710 return flush_imsg(ibuf);
1713 const struct got_error *
1714 got_privsep_recv_blob(uint8_t **outbuf, size_t *size, size_t *hdrlen,
1715 struct imsgbuf *ibuf)
1717 const struct got_error *err = NULL;
1719 struct got_imsg_blob *iblob;
1724 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1728 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1730 switch (imsg.hdr.type) {
1732 if (datalen < sizeof(*iblob)) {
1733 err = got_error(GOT_ERR_PRIVSEP_LEN);
1737 *size = iblob->size;
1738 *hdrlen = iblob->hdrlen;
1740 if (datalen == sizeof(*iblob)) {
1741 /* Data has been written to file descriptor. */
1745 if (*size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX) {
1746 err = got_error(GOT_ERR_PRIVSEP_LEN);
1750 *outbuf = malloc(*size);
1751 if (*outbuf == NULL) {
1752 err = got_error_from_errno("malloc");
1755 memcpy(*outbuf, imsg.data + sizeof(*iblob), *size);
1758 err = got_error(GOT_ERR_PRIVSEP_MSG);
1767 static const struct got_error *
1768 send_tagmsg(struct imsgbuf *ibuf, struct got_tag_object *tag, size_t tagmsg_len)
1770 const struct got_error *err = NULL;
1771 size_t offset, remain;
1774 remain = tagmsg_len;
1775 while (remain > 0) {
1776 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain);
1778 if (imsg_compose(ibuf, GOT_IMSG_TAG_TAGMSG, 0, 0, -1,
1779 tag->tagmsg + offset, n) == -1) {
1780 err = got_error_from_errno("imsg_compose TAG_TAGMSG");
1784 err = flush_imsg(ibuf);
1795 const struct got_error *
1796 got_privsep_send_tag(struct imsgbuf *ibuf, struct got_tag_object *tag)
1798 const struct got_error *err = NULL;
1799 struct got_imsg_tag_object *itag;
1802 size_t tag_len = strlen(tag->tag);
1803 size_t tagger_len = strlen(tag->tagger);
1804 size_t tagmsg_len = strlen(tag->tagmsg);
1806 total = sizeof(*itag) + tag_len + tagger_len + tagmsg_len;
1808 buf = malloc(total);
1810 return got_error_from_errno("malloc");
1812 itag = (struct got_imsg_tag_object *)buf;
1813 memcpy(itag->id, tag->id.sha1, sizeof(itag->id));
1814 itag->obj_type = tag->obj_type;
1815 itag->tag_len = tag_len;
1816 itag->tagger_len = tagger_len;
1817 itag->tagger_time = tag->tagger_time;
1818 itag->tagger_gmtoff = tag->tagger_gmtoff;
1819 itag->tagmsg_len = tagmsg_len;
1821 len = sizeof(*itag);
1822 memcpy(buf + len, tag->tag, tag_len);
1824 memcpy(buf + len, tag->tagger, tagger_len);
1827 if (imsg_compose(ibuf, GOT_IMSG_TAG, 0, 0, -1, buf, len) == -1) {
1828 err = got_error_from_errno("imsg_compose TAG");
1832 if (tagmsg_len == 0 ||
1833 tagmsg_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
1834 err = flush_imsg(ibuf);
1838 err = send_tagmsg(ibuf, tag, tagmsg_len);
1844 const struct got_error *
1845 got_privsep_recv_tag(struct got_tag_object **tag, struct imsgbuf *ibuf)
1847 const struct got_error *err = NULL;
1849 struct got_imsg_tag_object *itag;
1850 size_t len, datalen;
1851 const size_t min_datalen =
1852 MIN(sizeof(struct got_imsg_error),
1853 sizeof(struct got_imsg_tag_object));
1857 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1861 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1864 switch (imsg.hdr.type) {
1866 if (datalen < sizeof(*itag)) {
1867 err = got_error(GOT_ERR_PRIVSEP_LEN);
1871 if (datalen != sizeof(*itag) + itag->tag_len +
1873 err = got_error(GOT_ERR_PRIVSEP_LEN);
1876 len += sizeof(*itag);
1878 *tag = calloc(1, sizeof(**tag));
1880 err = got_error_from_errno("calloc");
1884 memcpy((*tag)->id.sha1, itag->id, SHA1_DIGEST_LENGTH);
1886 if (itag->tag_len == 0) {
1887 (*tag)->tag = strdup("");
1888 if ((*tag)->tag == NULL) {
1889 err = got_error_from_errno("strdup");
1893 (*tag)->tag = malloc(itag->tag_len + 1);
1894 if ((*tag)->tag == NULL) {
1895 err = got_error_from_errno("malloc");
1898 memcpy((*tag)->tag, imsg.data + len,
1900 (*tag)->tag[itag->tag_len] = '\0';
1902 len += itag->tag_len;
1904 (*tag)->obj_type = itag->obj_type;
1905 (*tag)->tagger_time = itag->tagger_time;
1906 (*tag)->tagger_gmtoff = itag->tagger_gmtoff;
1908 if (itag->tagger_len == 0) {
1909 (*tag)->tagger = strdup("");
1910 if ((*tag)->tagger == NULL) {
1911 err = got_error_from_errno("strdup");
1915 (*tag)->tagger = malloc(itag->tagger_len + 1);
1916 if ((*tag)->tagger == NULL) {
1917 err = got_error_from_errno("malloc");
1920 memcpy((*tag)->tagger, imsg.data + len,
1922 (*tag)->tagger[itag->tagger_len] = '\0';
1924 len += itag->tagger_len;
1926 if (itag->tagmsg_len == 0) {
1927 (*tag)->tagmsg = strdup("");
1928 if ((*tag)->tagmsg == NULL) {
1929 err = got_error_from_errno("strdup");
1933 size_t offset = 0, remain = itag->tagmsg_len;
1935 (*tag)->tagmsg = malloc(itag->tagmsg_len + 1);
1936 if ((*tag)->tagmsg == NULL) {
1937 err = got_error_from_errno("malloc");
1940 while (remain > 0) {
1941 struct imsg imsg_log;
1942 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,
1945 err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
1949 if (imsg_log.hdr.type != GOT_IMSG_TAG_TAGMSG)
1950 return got_error(GOT_ERR_PRIVSEP_MSG);
1952 memcpy((*tag)->tagmsg + offset, imsg_log.data,
1954 imsg_free(&imsg_log);
1958 (*tag)->tagmsg[itag->tagmsg_len] = '\0';
1963 err = got_error(GOT_ERR_PRIVSEP_MSG);
1972 const struct got_error *
1973 got_privsep_init_pack_child(struct imsgbuf *ibuf, struct got_pack *pack,
1974 struct got_packidx *packidx)
1976 const struct got_error *err = NULL;
1977 struct got_imsg_packidx ipackidx;
1978 struct got_imsg_pack ipack;
1981 ipackidx.len = packidx->len;
1982 ipackidx.packfile_size = pack->filesize;
1983 fd = dup(packidx->fd);
1985 return got_error_from_errno("dup");
1987 if (imsg_compose(ibuf, GOT_IMSG_PACKIDX, 0, 0, fd, &ipackidx,
1988 sizeof(ipackidx)) == -1) {
1989 err = got_error_from_errno("imsg_compose PACKIDX");
1994 if (strlcpy(ipack.path_packfile, pack->path_packfile,
1995 sizeof(ipack.path_packfile)) >= sizeof(ipack.path_packfile))
1996 return got_error(GOT_ERR_NO_SPACE);
1997 ipack.filesize = pack->filesize;
2001 return got_error_from_errno("dup");
2003 if (imsg_compose(ibuf, GOT_IMSG_PACK, 0, 0, fd, &ipack, sizeof(ipack))
2005 err = got_error_from_errno("imsg_compose PACK");
2010 return flush_imsg(ibuf);
2013 const struct got_error *
2014 got_privsep_send_packed_obj_req(struct imsgbuf *ibuf, int idx,
2015 struct got_object_id *id)
2017 struct got_imsg_packed_object iobj;
2020 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
2022 if (imsg_compose(ibuf, GOT_IMSG_PACKED_OBJECT_REQUEST, 0, 0, -1,
2023 &iobj, sizeof(iobj)) == -1)
2024 return got_error_from_errno("imsg_compose "
2025 "PACKED_OBJECT_REQUEST");
2027 return flush_imsg(ibuf);
2030 const struct got_error *
2031 got_privsep_send_packed_raw_obj_req(struct imsgbuf *ibuf, int idx,
2032 struct got_object_id *id)
2034 struct got_imsg_packed_object 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;
2138 const size_t min_datalen = 0;
2142 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2145 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2147 switch (imsg.hdr.type) {
2148 case GOT_IMSG_GITCONFIG_STR_VAL:
2151 /* datalen does not include terminating \0 */
2152 *str = malloc(datalen + 1);
2154 err = got_error_from_errno("malloc");
2157 memcpy(*str, imsg.data, datalen);
2158 (*str)[datalen] = '\0';
2161 err = got_error(GOT_ERR_PRIVSEP_MSG);
2169 const struct got_error *
2170 got_privsep_recv_gitconfig_int(int *val, struct imsgbuf *ibuf)
2172 const struct got_error *err = NULL;
2175 const size_t min_datalen =
2176 MIN(sizeof(struct got_imsg_error), sizeof(int));
2180 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2183 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2185 switch (imsg.hdr.type) {
2186 case GOT_IMSG_GITCONFIG_INT_VAL:
2187 if (datalen != sizeof(*val)) {
2188 err = got_error(GOT_ERR_PRIVSEP_LEN);
2191 memcpy(val, imsg.data, sizeof(*val));
2194 err = got_error(GOT_ERR_PRIVSEP_MSG);
2203 free_remote_data(struct got_remote_repo *remote)
2208 free(remote->fetch_url);
2209 free(remote->send_url);
2210 for (i = 0; i < remote->nfetch_branches; i++)
2211 free(remote->fetch_branches[i]);
2212 free(remote->fetch_branches);
2213 for (i = 0; i < remote->nsend_branches; i++)
2214 free(remote->send_branches[i]);
2215 free(remote->send_branches);
2216 for (i = 0; i < remote->nfetch_refs; i++)
2217 free(remote->fetch_refs[i]);
2218 free(remote->fetch_refs);
2221 const struct got_error *
2222 got_privsep_recv_gitconfig_remotes(struct got_remote_repo **remotes,
2223 int *nremotes, struct imsgbuf *ibuf)
2225 const struct got_error *err = NULL;
2228 struct got_imsg_remotes iremotes;
2229 struct got_imsg_remote iremote;
2233 iremotes.nremotes = 0;
2235 err = got_privsep_recv_imsg(&imsg, ibuf, sizeof(iremotes));
2238 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2240 switch (imsg.hdr.type) {
2241 case GOT_IMSG_GITCONFIG_REMOTES:
2242 if (datalen != sizeof(iremotes)) {
2243 err = got_error(GOT_ERR_PRIVSEP_LEN);
2246 memcpy(&iremotes, imsg.data, sizeof(iremotes));
2247 if (iremotes.nremotes == 0) {
2254 return got_error(GOT_ERR_PRIVSEP_MSG);
2259 *remotes = recallocarray(NULL, 0, iremotes.nremotes, sizeof(**remotes));
2260 if (*remotes == NULL)
2261 return got_error_from_errno("recallocarray");
2263 while (*nremotes < iremotes.nremotes) {
2264 struct got_remote_repo *remote;
2266 err = got_privsep_recv_imsg(&imsg, ibuf, sizeof(iremote));
2269 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2271 switch (imsg.hdr.type) {
2272 case GOT_IMSG_GITCONFIG_REMOTE:
2273 remote = &(*remotes)[*nremotes];
2274 memset(remote, 0, sizeof(*remote));
2275 if (datalen < sizeof(iremote)) {
2276 err = got_error(GOT_ERR_PRIVSEP_LEN);
2279 memcpy(&iremote, imsg.data, sizeof(iremote));
2280 if (iremote.name_len == 0 ||
2281 iremote.fetch_url_len == 0 ||
2282 iremote.send_url_len == 0 ||
2283 (sizeof(iremote) + iremote.name_len +
2284 iremote.fetch_url_len + iremote.send_url_len) > datalen) {
2285 err = got_error(GOT_ERR_PRIVSEP_LEN);
2288 remote->name = strndup(imsg.data + sizeof(iremote),
2290 if (remote->name == NULL) {
2291 err = got_error_from_errno("strndup");
2294 remote->fetch_url = strndup(imsg.data + sizeof(iremote) +
2295 iremote.name_len, iremote.fetch_url_len);
2296 if (remote->fetch_url == NULL) {
2297 err = got_error_from_errno("strndup");
2298 free_remote_data(remote);
2301 remote->send_url = strndup(imsg.data + sizeof(iremote) +
2302 iremote.name_len + iremote.fetch_url_len,
2303 iremote.send_url_len);
2304 if (remote->send_url == NULL) {
2305 err = got_error_from_errno("strndup");
2306 free_remote_data(remote);
2309 remote->mirror_references = iremote.mirror_references;
2310 remote->fetch_all_branches = iremote.fetch_all_branches;
2311 remote->nfetch_branches = 0;
2312 remote->fetch_branches = NULL;
2313 remote->nsend_branches = 0;
2314 remote->send_branches = NULL;
2315 remote->nfetch_refs = 0;
2316 remote->fetch_refs = NULL;
2320 err = got_error(GOT_ERR_PRIVSEP_MSG);
2331 for (i = 0; i < *nremotes; i++)
2332 free_remote_data(&(*remotes)[i]);
2340 const struct got_error *
2341 got_privsep_send_gotconfig_parse_req(struct imsgbuf *ibuf, int fd)
2343 const struct got_error *err = NULL;
2345 if (imsg_compose(ibuf, GOT_IMSG_GOTCONFIG_PARSE_REQUEST, 0, 0, fd,
2347 err = got_error_from_errno("imsg_compose "
2348 "GOTCONFIG_PARSE_REQUEST");
2353 return flush_imsg(ibuf);
2356 const struct got_error *
2357 got_privsep_send_gotconfig_author_req(struct imsgbuf *ibuf)
2359 if (imsg_compose(ibuf,
2360 GOT_IMSG_GOTCONFIG_AUTHOR_REQUEST, 0, 0, -1, NULL, 0) == -1)
2361 return got_error_from_errno("imsg_compose "
2362 "GOTCONFIG_AUTHOR_REQUEST");
2364 return flush_imsg(ibuf);
2367 const struct got_error *
2368 got_privsep_send_gotconfig_remotes_req(struct imsgbuf *ibuf)
2370 if (imsg_compose(ibuf,
2371 GOT_IMSG_GOTCONFIG_REMOTES_REQUEST, 0, 0, -1, NULL, 0) == -1)
2372 return got_error_from_errno("imsg_compose "
2373 "GOTCONFIG_REMOTE_REQUEST");
2375 return flush_imsg(ibuf);
2378 const struct got_error *
2379 got_privsep_recv_gotconfig_str(char **str, struct imsgbuf *ibuf)
2381 const struct got_error *err = NULL;
2384 const size_t min_datalen = 0;
2388 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2391 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2393 switch (imsg.hdr.type) {
2394 case GOT_IMSG_ERROR:
2395 if (datalen < sizeof(struct got_imsg_error)) {
2396 err = got_error(GOT_ERR_PRIVSEP_LEN);
2399 err = recv_imsg_error(&imsg, datalen);
2401 case GOT_IMSG_GOTCONFIG_STR_VAL:
2404 /* datalen does not include terminating \0 */
2405 *str = malloc(datalen + 1);
2407 err = got_error_from_errno("malloc");
2410 memcpy(*str, imsg.data, datalen);
2411 (*str)[datalen] = '\0';
2414 err = got_error(GOT_ERR_PRIVSEP_MSG);
2422 const struct got_error *
2423 got_privsep_recv_gotconfig_remotes(struct got_remote_repo **remotes,
2424 int *nremotes, struct imsgbuf *ibuf)
2426 const struct got_error *err = NULL;
2429 struct got_imsg_remotes iremotes;
2430 struct got_imsg_remote iremote;
2431 const size_t min_datalen =
2432 MIN(sizeof(struct got_imsg_error), sizeof(iremotes));
2436 iremotes.nremotes = 0;
2438 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2441 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2443 switch (imsg.hdr.type) {
2444 case GOT_IMSG_ERROR:
2445 if (datalen < sizeof(struct got_imsg_error)) {
2446 err = got_error(GOT_ERR_PRIVSEP_LEN);
2449 err = recv_imsg_error(&imsg, datalen);
2451 case GOT_IMSG_GOTCONFIG_REMOTES:
2452 if (datalen != sizeof(iremotes)) {
2453 err = got_error(GOT_ERR_PRIVSEP_LEN);
2456 memcpy(&iremotes, imsg.data, sizeof(iremotes));
2457 if (iremotes.nremotes == 0) {
2464 return got_error(GOT_ERR_PRIVSEP_MSG);
2469 *remotes = recallocarray(NULL, 0, iremotes.nremotes, sizeof(**remotes));
2470 if (*remotes == NULL)
2471 return got_error_from_errno("recallocarray");
2473 while (*nremotes < iremotes.nremotes) {
2474 struct got_remote_repo *remote;
2475 const size_t min_datalen =
2476 MIN(sizeof(struct got_imsg_error), sizeof(iremote));
2479 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2482 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2484 switch (imsg.hdr.type) {
2485 case GOT_IMSG_ERROR:
2486 if (datalen < sizeof(struct got_imsg_error)) {
2487 err = got_error(GOT_ERR_PRIVSEP_LEN);
2490 err = recv_imsg_error(&imsg, datalen);
2492 case GOT_IMSG_GOTCONFIG_REMOTE:
2493 remote = &(*remotes)[*nremotes];
2494 memset(remote, 0, sizeof(*remote));
2495 if (datalen < sizeof(iremote)) {
2496 err = got_error(GOT_ERR_PRIVSEP_LEN);
2499 memcpy(&iremote, imsg.data, sizeof(iremote));
2500 if (iremote.name_len == 0 ||
2501 (iremote.fetch_url_len == 0 &&
2502 iremote.send_url_len == 0) ||
2503 (sizeof(iremote) + iremote.name_len +
2504 iremote.fetch_url_len + iremote.send_url_len) >
2506 err = got_error(GOT_ERR_PRIVSEP_LEN);
2509 remote->name = strndup(imsg.data + sizeof(iremote),
2511 if (remote->name == NULL) {
2512 err = got_error_from_errno("strndup");
2515 remote->fetch_url = strndup(imsg.data +
2516 sizeof(iremote) + iremote.name_len,
2517 iremote.fetch_url_len);
2518 if (remote->fetch_url == NULL) {
2519 err = got_error_from_errno("strndup");
2520 free_remote_data(remote);
2523 remote->send_url = strndup(imsg.data +
2524 sizeof(iremote) + iremote.name_len +
2525 iremote.fetch_url_len, iremote.send_url_len);
2526 if (remote->send_url == NULL) {
2527 err = got_error_from_errno("strndup");
2528 free_remote_data(remote);
2531 remote->mirror_references = iremote.mirror_references;
2532 remote->fetch_all_branches = iremote.fetch_all_branches;
2533 if (iremote.nfetch_branches > 0) {
2534 remote->fetch_branches = recallocarray(NULL, 0,
2535 iremote.nfetch_branches, sizeof(char *));
2536 if (remote->fetch_branches == NULL) {
2537 err = got_error_from_errno("calloc");
2538 free_remote_data(remote);
2542 remote->nfetch_branches = 0;
2543 for (i = 0; i < iremote.nfetch_branches; i++) {
2545 err = got_privsep_recv_gotconfig_str(&branch,
2548 free_remote_data(remote);
2551 remote->fetch_branches[i] = branch;
2552 remote->nfetch_branches++;
2554 if (iremote.nsend_branches > 0) {
2555 remote->send_branches = recallocarray(NULL, 0,
2556 iremote.nsend_branches, sizeof(char *));
2557 if (remote->send_branches == NULL) {
2558 err = got_error_from_errno("calloc");
2559 free_remote_data(remote);
2563 remote->nsend_branches = 0;
2564 for (i = 0; i < iremote.nsend_branches; i++) {
2566 err = got_privsep_recv_gotconfig_str(&branch,
2569 free_remote_data(remote);
2572 remote->send_branches[i] = branch;
2573 remote->nsend_branches++;
2575 if (iremote.nfetch_refs > 0) {
2576 remote->fetch_refs = recallocarray(NULL, 0,
2577 iremote.nfetch_refs, sizeof(char *));
2578 if (remote->fetch_refs == NULL) {
2579 err = got_error_from_errno("calloc");
2580 free_remote_data(remote);
2584 remote->nfetch_refs = 0;
2585 for (i = 0; i < iremote.nfetch_refs; i++) {
2587 err = got_privsep_recv_gotconfig_str(&ref,
2590 free_remote_data(remote);
2593 remote->fetch_refs[i] = ref;
2594 remote->nfetch_refs++;
2599 err = got_error(GOT_ERR_PRIVSEP_MSG);
2610 for (i = 0; i < *nremotes; i++)
2611 free_remote_data(&(*remotes)[i]);
2619 const struct got_error *
2620 got_privsep_send_commit_traversal_request(struct imsgbuf *ibuf,
2621 struct got_object_id *id, int idx, const char *path)
2623 const struct got_error *err = NULL;
2625 size_t path_len = strlen(path) + 1;
2627 wbuf = imsg_create(ibuf, GOT_IMSG_COMMIT_TRAVERSAL_REQUEST, 0, 0,
2628 sizeof(struct got_imsg_commit_traversal_request) + path_len);
2630 return got_error_from_errno(
2631 "imsg_create COMMIT_TRAVERSAL_REQUEST");
2632 if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH) == -1) {
2633 err = got_error_from_errno("imsg_add COMMIT_TRAVERSAL_REQUEST");
2637 if (imsg_add(wbuf, &idx, sizeof(idx)) == -1) {
2638 err = got_error_from_errno("imsg_add COMMIT_TRAVERSAL_REQUEST");
2642 if (imsg_add(wbuf, path, path_len) == -1) {
2643 err = got_error_from_errno("imsg_add COMMIT_TRAVERSAL_REQUEST");
2649 imsg_close(ibuf, wbuf);
2651 return flush_imsg(ibuf);
2654 const struct got_error *
2655 got_privsep_recv_traversed_commits(struct got_commit_object **changed_commit,
2656 struct got_object_id **changed_commit_id,
2657 struct got_object_id_queue *commit_ids, struct imsgbuf *ibuf)
2659 const struct got_error *err = NULL;
2661 struct got_imsg_traversed_commits *icommits;
2665 *changed_commit = NULL;
2666 *changed_commit_id = NULL;
2669 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
2673 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2674 switch (imsg.hdr.type) {
2675 case GOT_IMSG_TRAVERSED_COMMITS:
2676 icommits = imsg.data;
2677 if (datalen != sizeof(*icommits) +
2678 icommits->ncommits * SHA1_DIGEST_LENGTH) {
2679 err = got_error(GOT_ERR_PRIVSEP_LEN);
2682 for (i = 0; i < icommits->ncommits; i++) {
2683 struct got_object_qid *qid;
2684 uint8_t *sha1 = (uint8_t *)imsg.data +
2685 sizeof(*icommits) + i * SHA1_DIGEST_LENGTH;
2686 err = got_object_qid_alloc_partial(&qid);
2689 memcpy(qid->id->sha1, sha1, SHA1_DIGEST_LENGTH);
2690 STAILQ_INSERT_TAIL(commit_ids, qid, entry);
2692 /* The last commit may contain a change. */
2693 if (i == icommits->ncommits - 1) {
2694 *changed_commit_id =
2695 got_object_id_dup(qid->id);
2696 if (*changed_commit_id == NULL) {
2697 err = got_error_from_errno(
2698 "got_object_id_dup");
2704 case GOT_IMSG_COMMIT:
2705 if (*changed_commit_id == NULL) {
2706 err = got_error(GOT_ERR_PRIVSEP_MSG);
2709 err = get_commit_from_imsg(changed_commit, &imsg,
2712 case GOT_IMSG_COMMIT_TRAVERSAL_DONE:
2716 err = got_error(GOT_ERR_PRIVSEP_MSG);
2726 got_object_id_queue_free(commit_ids);
2730 const struct got_error *
2731 got_privsep_unveil_exec_helpers(void)
2733 const char *helpers[] = {
2734 GOT_PATH_PROG_READ_PACK,
2735 GOT_PATH_PROG_READ_OBJECT,
2736 GOT_PATH_PROG_READ_COMMIT,
2737 GOT_PATH_PROG_READ_TREE,
2738 GOT_PATH_PROG_READ_BLOB,
2739 GOT_PATH_PROG_READ_TAG,
2740 GOT_PATH_PROG_READ_GITCONFIG,
2741 GOT_PATH_PROG_READ_GOTCONFIG,
2742 GOT_PATH_PROG_FETCH_PACK,
2743 GOT_PATH_PROG_INDEX_PACK,
2744 GOT_PATH_PROG_SEND_PACK,
2748 for (i = 0; i < nitems(helpers); i++) {
2749 if (unveil(helpers[i], "x") == 0)
2751 return got_error_from_errno2("unveil", helpers[i]);
2758 got_privsep_exec_child(int imsg_fds[2], const char *path, const char *repo_path)
2760 if (close(imsg_fds[0]) == -1) {
2761 fprintf(stderr, "%s: %s\n", getprogname(), strerror(errno));
2765 if (dup2(imsg_fds[1], GOT_IMSG_FD_CHILD) == -1) {
2766 fprintf(stderr, "%s: %s\n", getprogname(), strerror(errno));
2769 if (closefrom(GOT_IMSG_FD_CHILD + 1) == -1) {
2770 fprintf(stderr, "%s: %s\n", getprogname(), strerror(errno));
2774 if (execl(path, path, repo_path, (char *)NULL) == -1) {
2775 fprintf(stderr, "%s: %s: %s\n", getprogname(), path,