2 * Copyright (c) 2019 Ori Bernstein <ori@openbsd.org>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <sys/types.h>
18 #include <sys/queue.h>
38 #include "got_error.h"
39 #include "got_object.h"
41 #include "got_version.h"
42 #include "got_fetch.h"
43 #include "got_reference.h"
45 #include "got_lib_sha1.h"
46 #include "got_lib_delta.h"
47 #include "got_lib_object.h"
48 #include "got_lib_object_parse.h"
49 #include "got_lib_privsep.h"
50 #include "got_lib_pack.h"
51 #include "got_lib_pkt.h"
52 #include "got_lib_gitproto.h"
53 #include "got_lib_ratelimit.h"
56 #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
60 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
63 struct got_object *indexed;
66 static const struct got_capability got_capabilities[] = {
67 { GOT_CAPA_AGENT, "got/" GOT_VERSION_STR },
68 { GOT_CAPA_OFS_DELTA, NULL },
69 { GOT_CAPA_SIDE_BAND_64K, NULL },
73 match_remote_ref(struct got_pathlist_head *have_refs,
74 struct got_object_id *my_id, const char *refname)
76 struct got_pathlist_entry *pe;
78 /* XXX zero-hash signifies we don't have this ref;
79 * we should use a flag instead */
80 memset(my_id, 0, sizeof(*my_id));
82 TAILQ_FOREACH(pe, have_refs, entry) {
83 struct got_object_id *id = pe->data;
84 if (strcmp(pe->path, refname) == 0) {
85 memcpy(my_id, id, sizeof(*my_id));
92 match_branch(const char *branch, const char *wanted_branch)
94 if (strncmp(branch, "refs/heads/", 11) != 0)
97 if (strncmp(wanted_branch, "refs/heads/", 11) == 0)
100 return (strcmp(branch + 11, wanted_branch) == 0);
104 match_wanted_ref(const char *refname, const char *wanted_ref)
106 if (strncmp(refname, "refs/", 5) != 0)
111 * Prevent fetching of references that won't make any
112 * sense outside of the remote repository's context.
114 if (strncmp(refname, "got/", 4) == 0)
116 if (strncmp(refname, "remotes/", 8) == 0)
119 if (strncmp(wanted_ref, "refs/", 5) == 0)
122 /* Allow prefix match. */
123 if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
126 /* Allow exact match. */
127 return (strcmp(refname, wanted_ref) == 0);
130 static const struct got_error *
131 send_fetch_server_progress(struct imsgbuf *ibuf, const char *msg, size_t msglen)
133 if (msglen > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
134 return got_error(GOT_ERR_NO_SPACE);
139 if (imsg_compose(ibuf, GOT_IMSG_FETCH_SERVER_PROGRESS, 0, 0, -1,
141 return got_error_from_errno(
142 "imsg_compose FETCH_SERVER_PROGRESS");
144 return got_privsep_flush_imsg(ibuf);
147 static const struct got_error *
148 send_fetch_download_progress(struct imsgbuf *ibuf, off_t bytes,
149 struct got_ratelimit *rl)
151 const struct got_error *err;
155 err = got_ratelimit_check(&elapsed, rl);
160 if (imsg_compose(ibuf, GOT_IMSG_FETCH_DOWNLOAD_PROGRESS, 0, 0, -1,
161 &bytes, sizeof(bytes)) == -1)
162 return got_error_from_errno(
163 "imsg_compose FETCH_DOWNLOAD_PROGRESS");
165 return got_privsep_flush_imsg(ibuf);
168 static const struct got_error *
169 send_fetch_done(struct imsgbuf *ibuf, uint8_t *pack_sha1)
171 if (imsg_compose(ibuf, GOT_IMSG_FETCH_DONE, 0, 0, -1,
172 pack_sha1, SHA1_DIGEST_LENGTH) == -1)
173 return got_error_from_errno("imsg_compose FETCH");
174 return got_privsep_flush_imsg(ibuf);
177 static const struct got_error *
178 fetch_progress(struct imsgbuf *ibuf, const char *buf, size_t len)
186 * Truncate messages which exceed the maximum imsg payload size.
187 * Server may send up to 64k.
189 if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
190 len = MAX_IMSGSIZE - IMSG_HEADER_SIZE;
192 /* Only allow printable ASCII. */
193 for (i = 0; i < len; i++) {
194 if (isprint((unsigned char)buf[i]) ||
195 isspace((unsigned char)buf[i]))
197 return got_error_msg(GOT_ERR_BAD_PACKET,
198 "non-printable progress message received from server");
201 return send_fetch_server_progress(ibuf, buf, len);
204 static const struct got_error *
205 fetch_error(const char *buf, size_t len)
207 static char msg[1024];
210 for (i = 0; i < len && i < sizeof(msg) - 1; i++) {
211 if (!isprint((unsigned char)buf[i]))
212 return got_error_msg(GOT_ERR_BAD_PACKET,
213 "non-printable error message received from server");
217 return got_error_msg(GOT_ERR_FETCH_FAILED, msg);
220 static const struct got_error *
221 send_fetch_symrefs(struct imsgbuf *ibuf, struct got_pathlist_head *symrefs)
224 size_t len, nsymrefs = 0;
225 struct got_pathlist_entry *pe;
227 len = sizeof(struct got_imsg_fetch_symrefs);
228 TAILQ_FOREACH(pe, symrefs, entry) {
229 const char *target = pe->data;
230 len += sizeof(struct got_imsg_fetch_symref) +
231 pe->path_len + strlen(target);
235 if (len >= MAX_IMSGSIZE - IMSG_HEADER_SIZE)
236 return got_error(GOT_ERR_NO_SPACE);
238 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_SYMREFS, 0, 0, len);
240 return got_error_from_errno("imsg_create FETCH_SYMREFS");
242 /* Keep in sync with struct got_imsg_fetch_symrefs definition! */
243 if (imsg_add(wbuf, &nsymrefs, sizeof(nsymrefs)) == -1)
244 return got_error_from_errno("imsg_add FETCH_SYMREFS");
246 TAILQ_FOREACH(pe, symrefs, entry) {
247 const char *name = pe->path;
248 size_t name_len = pe->path_len;
249 const char *target = pe->data;
250 size_t target_len = strlen(target);
252 /* Keep in sync with struct got_imsg_fetch_symref definition! */
253 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1)
254 return got_error_from_errno("imsg_add FETCH_SYMREFS");
255 if (imsg_add(wbuf, &target_len, sizeof(target_len)) == -1)
256 return got_error_from_errno("imsg_add FETCH_SYMREFS");
257 if (imsg_add(wbuf, name, name_len) == -1)
258 return got_error_from_errno("imsg_add FETCH_SYMREFS");
259 if (imsg_add(wbuf, target, target_len) == -1)
260 return got_error_from_errno("imsg_add FETCH_SYMREFS");
264 imsg_close(ibuf, wbuf);
265 return got_privsep_flush_imsg(ibuf);
268 static const struct got_error *
269 send_fetch_ref(struct imsgbuf *ibuf, struct got_object_id *refid,
273 size_t len, reflen = strlen(refname);
275 len = sizeof(struct got_imsg_fetch_ref) + reflen;
276 if (len >= MAX_IMSGSIZE - IMSG_HEADER_SIZE)
277 return got_error(GOT_ERR_NO_SPACE);
279 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_REF, 0, 0, len);
281 return got_error_from_errno("imsg_create FETCH_REF");
283 /* Keep in sync with struct got_imsg_fetch_ref definition! */
284 if (imsg_add(wbuf, refid, sizeof(*refid)) == -1)
285 return got_error_from_errno("imsg_add FETCH_REF");
286 if (imsg_add(wbuf, refname, reflen) == -1)
287 return got_error_from_errno("imsg_add FETCH_REF");
290 imsg_close(ibuf, wbuf);
291 return got_privsep_flush_imsg(ibuf);
294 static const struct got_error *
295 fetch_ref(struct imsgbuf *ibuf, struct got_pathlist_head *have_refs,
296 struct got_object_id *have, struct got_object_id *want,
297 const char *refname, const char *id_str)
299 const struct got_error *err;
300 char *theirs = NULL, *mine = NULL;
302 if (!got_parse_sha1_digest(want->sha1, id_str)) {
303 err = got_error(GOT_ERR_BAD_OBJ_ID_STR);
307 match_remote_ref(have_refs, have, refname);
308 err = send_fetch_ref(ibuf, want, refname);
313 fprintf(stderr, "%s: %s will be fetched\n",
314 getprogname(), refname);
316 err = got_object_id_str(&theirs, want);
319 err = got_object_id_str(&mine, have);
322 fprintf(stderr, "%s: remote: %s\n%s: local: %s\n",
323 getprogname(), theirs, getprogname(), mine);
331 static const struct got_error *
332 fetch_pack(int fd, int packfd, uint8_t *pack_sha1,
333 struct got_pathlist_head *have_refs, int fetch_all_branches,
334 struct got_pathlist_head *wanted_branches,
335 struct got_pathlist_head *wanted_refs, int list_refs_only,
336 const char *worktree_branch, const char *remote_head,
337 int no_head, struct imsgbuf *ibuf)
339 const struct got_error *err = NULL;
340 char buf[GOT_PKT_MAX];
341 char hashstr[SHA1_DIGEST_STRING_LENGTH];
342 struct got_object_id *have, *want;
343 int is_firstpkt = 1, nref = 0, refsz = 16;
344 int i, n, nwant = 0, nhave = 0, acked = 0;
345 off_t packsz = 0, last_reported_packsz = 0;
346 char *id_str = NULL, *default_id_str = NULL, *refname = NULL;
347 char *server_capabilities = NULL, *my_capabilities = NULL;
348 const char *default_branch = NULL;
349 struct got_pathlist_head symrefs;
350 struct got_pathlist_entry *pe;
351 int sent_my_capabilites = 0, have_sidebands = 0;
352 int found_branch = 0;
354 uint8_t sha1_buf[SHA1_DIGEST_LENGTH];
355 size_t sha1_buf_len = 0;
357 struct got_ratelimit rl;
359 TAILQ_INIT(&symrefs);
361 got_ratelimit_init(&rl, 0, 500);
363 have = malloc(refsz * sizeof(have[0]));
365 return got_error_from_errno("malloc");
366 want = malloc(refsz * sizeof(want[0]));
368 err = got_error_from_errno("malloc");
372 err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
377 if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
378 err = fetch_error(&buf[4], n - 4);
383 err = got_gitproto_parse_refline(&id_str, &refname,
384 &server_capabilities, buf, n);
388 if (refsz == nref + 1) {
389 struct got_object_id *h, *w;
392 h = reallocarray(have, refsz, sizeof(have[0]));
394 err = got_error_from_errno("reallocarray");
398 w = reallocarray(want, refsz, sizeof(want[0]));
400 err = got_error_from_errno("reallocarray");
407 if (chattygot && server_capabilities[0] != '\0')
408 fprintf(stderr, "%s: server capabilities: %s\n",
409 getprogname(), server_capabilities);
410 err = got_gitproto_match_capabilities(&my_capabilities,
411 &symrefs, server_capabilities,
412 got_capabilities, nitems(got_capabilities));
416 fprintf(stderr, "%s: my capabilities:%s\n",
417 getprogname(), my_capabilities != NULL ?
418 my_capabilities : "");
419 err = send_fetch_symrefs(ibuf, &symrefs);
423 if (!fetch_all_branches) {
424 TAILQ_FOREACH(pe, &symrefs, entry) {
425 const char *name = pe->path;
426 const char *symref_target = pe->data;
427 if (strcmp(name, GOT_REF_HEAD) != 0)
429 default_branch = symref_target;
436 if (strstr(refname, "^{}")) {
438 fprintf(stderr, "%s: ignoring %s\n",
439 getprogname(), refname);
443 if (default_branch && default_id_str == NULL &&
444 strcmp(refname, default_branch) == 0) {
445 default_id_str = strdup(id_str);
446 if (default_id_str == NULL) {
447 err = got_error_from_errno("strdup");
452 if (list_refs_only || strncmp(refname, "refs/tags/", 10) == 0) {
453 err = fetch_ref(ibuf, have_refs, &have[nref],
454 &want[nref], refname, id_str);
458 } else if (strncmp(refname, "refs/heads/", 11) == 0) {
459 if (fetch_all_branches) {
460 err = fetch_ref(ibuf, have_refs, &have[nref],
461 &want[nref], refname, id_str);
468 TAILQ_FOREACH(pe, wanted_branches, entry) {
469 if (match_branch(refname, pe->path))
472 if (pe != NULL || (worktree_branch != NULL &&
473 match_branch(refname, worktree_branch))) {
474 err = fetch_ref(ibuf, have_refs, &have[nref],
475 &want[nref], refname, id_str);
480 } else if (chattygot) {
481 fprintf(stderr, "%s: ignoring %s\n",
482 getprogname(), refname);
485 TAILQ_FOREACH(pe, wanted_refs, entry) {
486 if (match_wanted_ref(refname, pe->path))
490 err = fetch_ref(ibuf, have_refs, &have[nref],
491 &want[nref], refname, id_str);
495 } else if (chattygot) {
496 fprintf(stderr, "%s: ignoring %s\n",
497 getprogname(), refname);
506 * If -b was not used and either none of the requested branches
507 * (got.conf, worktree) were found or the client already has the
508 * remote HEAD symref but its target changed, fetch remote's HEAD.
510 if (!no_head && default_branch && default_id_str &&
511 strncmp(default_branch, "refs/heads/", 11) == 0) {
512 int remote_head_changed = 0;
515 if (strcmp(remote_head, default_branch + 11) != 0)
516 remote_head_changed = 1;
519 if (!found_branch || remote_head_changed) {
520 err = fetch_ref(ibuf, have_refs, &have[nref],
521 &want[nref], default_branch, default_id_str);
528 /* Abort if we haven't found anything to fetch. */
530 struct got_pathlist_entry *pe;
531 static char msg[PATH_MAX + 33];
533 pe = TAILQ_FIRST(wanted_branches);
535 snprintf(msg, sizeof(msg),
536 "branch \"%s\" not found on server", pe->path);
537 err = got_error_msg(GOT_ERR_FETCH_NO_BRANCH, msg);
541 pe = TAILQ_FIRST(wanted_refs);
543 snprintf(msg, sizeof(msg),
544 "reference \"%s\" not found on server", pe->path);
545 err = got_error_msg(GOT_ERR_FETCH_NO_BRANCH, msg);
549 err = got_error(GOT_ERR_FETCH_NO_BRANCH);
553 for (i = 0; i < nref; i++) {
554 if (got_object_id_cmp(&have[i], &want[i]) == 0)
556 got_sha1_digest_to_str(want[i].sha1, hashstr, sizeof(hashstr));
557 n = snprintf(buf, sizeof(buf), "want %s%s\n", hashstr,
558 sent_my_capabilites || my_capabilities == NULL ?
559 "" : my_capabilities);
560 if (n < 0 || (size_t)n >= sizeof(buf)) {
561 err = got_error(GOT_ERR_NO_SPACE);
564 err = got_pkt_writepkt(fd, buf, n, chattygot);
567 sent_my_capabilites = 1;
570 err = got_pkt_flushpkt(fd, chattygot);
577 TAILQ_FOREACH(pe, have_refs, entry) {
578 struct got_object_id *id = pe->data;
579 got_sha1_digest_to_str(id->sha1, hashstr, sizeof(hashstr));
580 n = snprintf(buf, sizeof(buf), "have %s\n", hashstr);
581 if (n < 0 || (size_t)n >= sizeof(buf)) {
582 err = got_error(GOT_ERR_NO_SPACE);
585 err = got_pkt_writepkt(fd, buf, n, chattygot);
591 while (nhave > 0 && !acked) {
592 struct got_object_id common_id;
594 /* The server should ACK the object IDs we need. */
595 err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
598 if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
599 err = fetch_error(&buf[4], n - 4);
602 if (n >= 4 && strncmp(buf, "NAK\n", 4) == 0) {
603 /* Server has not located our objects yet. */
606 if (n < 4 + SHA1_DIGEST_STRING_LENGTH ||
607 strncmp(buf, "ACK ", 4) != 0) {
608 err = got_error_msg(GOT_ERR_BAD_PACKET,
609 "unexpected message from server");
612 if (!got_parse_sha1_digest(common_id.sha1, buf + 4)) {
613 err = got_error_msg(GOT_ERR_BAD_PACKET,
614 "bad object ID in ACK packet from server");
620 n = strlcpy(buf, "done\n", sizeof(buf));
621 err = got_pkt_writepkt(fd, buf, n, chattygot);
626 err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
629 if (n != 4 || strncmp(buf, "NAK\n", n) != 0) {
630 err = got_error_msg(GOT_ERR_BAD_PACKET,
631 "unexpected message from server");
637 fprintf(stderr, "%s: fetching...\n", getprogname());
639 if (my_capabilities != NULL &&
640 strstr(my_capabilities, GOT_CAPA_SIDE_BAND_64K) != NULL)
647 if (have_sidebands) {
648 err = got_pkt_readhdr(&datalen, fd, chattygot);
654 /* Read sideband channel ID (one byte). */
655 r = read(fd, buf, 1);
657 err = got_error_from_errno("read");
661 err = got_error_msg(GOT_ERR_BAD_PACKET,
665 if (datalen > sizeof(buf) - 5) {
666 err = got_error_msg(GOT_ERR_BAD_PACKET,
667 "bad packet length");
670 datalen--; /* sideband ID has been read */
671 if (buf[0] == GOT_SIDEBAND_PACKFILE_DATA) {
672 /* Read packfile data. */
673 err = got_pkt_readn(&r, fd, buf, datalen);
677 err = got_error_msg(GOT_ERR_BAD_PACKET,
681 } else if (buf[0] == GOT_SIDEBAND_PROGRESS_INFO) {
682 err = got_pkt_readn(&r, fd, buf, datalen);
686 err = got_error_msg(GOT_ERR_BAD_PACKET,
690 err = fetch_progress(ibuf, buf, r);
694 } else if (buf[0] == GOT_SIDEBAND_ERROR_INFO) {
695 err = got_pkt_readn(&r, fd, buf, datalen);
699 err = got_error_msg(GOT_ERR_BAD_PACKET,
703 err = fetch_error(buf, r);
705 } else if (buf[0] == 'A') {
706 err = got_pkt_readn(&r, fd, buf, datalen);
710 err = got_error_msg(GOT_ERR_BAD_PACKET,
715 * Git server responds with ACK after 'done'
716 * even though multi_ack is disabled?!?
719 if (strncmp(buf, "CK ", 3) == 0)
720 continue; /* ignore */
721 err = got_error_msg(GOT_ERR_BAD_PACKET,
722 "unexpected message from server");
725 err = got_error_msg(GOT_ERR_BAD_PACKET,
726 "unknown side-band received from server");
730 /* No sideband channel. Every byte is packfile data. */
731 err = got_pkt_readn(&r, fd, buf, sizeof buf);
739 * An expected SHA1 checksum sits at the end of the pack file.
740 * Since we don't know the file size ahead of time we have to
741 * keep SHA1_DIGEST_LENGTH bytes buffered and avoid mixing
742 * those bytes into our SHA1 checksum computation until we
743 * know for sure that additional pack file data bytes follow.
745 * We can assume r > 0 since otherwise the loop would exit.
747 if (r < SHA1_DIGEST_LENGTH) {
748 if (sha1_buf_len < SHA1_DIGEST_LENGTH) {
750 * If there's enough buffered + read data to
751 * fill up the buffer then shift a sufficient
752 * amount of bytes out at the front to make
753 * room, mixing those bytes into the checksum.
755 if (sha1_buf_len > 0 &&
756 sha1_buf_len + r > SHA1_DIGEST_LENGTH) {
757 size_t nshift = MIN(sha1_buf_len + r -
758 SHA1_DIGEST_LENGTH, sha1_buf_len);
759 SHA1Update(&sha1_ctx, sha1_buf, nshift);
760 memmove(sha1_buf, sha1_buf + nshift,
761 sha1_buf_len - nshift);
762 sha1_buf_len -= nshift;
765 /* Buffer potential checksum bytes. */
766 memcpy(sha1_buf + sha1_buf_len, buf, r);
770 * Mix in previously buffered bytes which
771 * are not part of the checksum after all.
773 SHA1Update(&sha1_ctx, sha1_buf, r);
775 /* Update potential checksum buffer. */
776 memmove(sha1_buf, sha1_buf + r,
778 memcpy(sha1_buf + sha1_buf_len - r, buf, r);
781 /* Mix in any previously buffered bytes. */
782 SHA1Update(&sha1_ctx, sha1_buf, sha1_buf_len);
784 /* Mix in bytes read minus potential checksum bytes. */
785 SHA1Update(&sha1_ctx, buf, r - SHA1_DIGEST_LENGTH);
787 /* Buffer potential checksum bytes. */
788 memcpy(sha1_buf, buf + r - SHA1_DIGEST_LENGTH,
790 sha1_buf_len = SHA1_DIGEST_LENGTH;
793 /* Write packfile data to temporary pack file. */
794 w = write(packfd, buf, r);
796 err = got_error_from_errno("write");
800 err = got_error(GOT_ERR_IO);
805 /* Don't send too many progress privsep messages. */
806 if (packsz > last_reported_packsz + 1024) {
807 err = send_fetch_download_progress(ibuf, packsz, &rl);
810 last_reported_packsz = packsz;
813 err = send_fetch_download_progress(ibuf, packsz, NULL);
817 SHA1Final(pack_sha1, &sha1_ctx);
818 if (sha1_buf_len != SHA1_DIGEST_LENGTH ||
819 memcmp(pack_sha1, sha1_buf, sha1_buf_len) != 0) {
820 err = got_error_msg(GOT_ERR_BAD_PACKFILE,
821 "pack file checksum mismatch");
824 got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
828 free(default_id_str);
830 free(server_capabilities);
836 main(int argc, char **argv)
838 const struct got_error *err = NULL;
839 int fetchfd = -1, packfd = -1;
840 uint8_t pack_sha1[SHA1_DIGEST_LENGTH];
843 struct got_pathlist_head have_refs;
844 struct got_pathlist_head wanted_branches;
845 struct got_pathlist_head wanted_refs;
846 struct got_imsg_fetch_request fetch_req;
847 struct got_imsg_fetch_have_ref href;
848 struct got_imsg_fetch_wanted_branch wbranch;
849 struct got_imsg_fetch_wanted_ref wref;
851 char *remote_head = NULL, *worktree_branch = NULL;
858 TAILQ_INIT(&have_refs);
859 TAILQ_INIT(&wanted_branches);
860 TAILQ_INIT(&wanted_refs);
862 imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
864 /* revoke access to most system calls */
865 if (pledge("stdio recvfd", NULL) == -1) {
866 err = got_error_from_errno("pledge");
867 got_privsep_send_error(&ibuf, err);
871 err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
873 if (err->code == GOT_ERR_PRIVSEP_PIPE)
877 if (imsg.hdr.type == GOT_IMSG_STOP)
879 if (imsg.hdr.type != GOT_IMSG_FETCH_REQUEST) {
880 err = got_error(GOT_ERR_PRIVSEP_MSG);
883 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
884 if (datalen < sizeof(fetch_req)) {
885 err = got_error(GOT_ERR_PRIVSEP_LEN);
888 memcpy(&fetch_req, imsg.data, sizeof(fetch_req));
891 if (datalen != sizeof(fetch_req) +
892 fetch_req.worktree_branch_len + fetch_req.remote_head_len) {
893 err = got_error(GOT_ERR_PRIVSEP_LEN);
897 if (fetch_req.worktree_branch_len != 0) {
898 worktree_branch = strndup(imsg.data +
899 sizeof(fetch_req), fetch_req.worktree_branch_len);
900 if (worktree_branch == NULL) {
901 err = got_error_from_errno("strndup");
906 if (fetch_req.remote_head_len != 0) {
907 remote_head = strndup(imsg.data + sizeof(fetch_req) +
908 fetch_req.worktree_branch_len, fetch_req.remote_head_len);
909 if (remote_head == NULL) {
910 err = got_error_from_errno("strndup");
917 if (fetch_req.verbosity > 0)
918 chattygot += fetch_req.verbosity;
920 for (i = 0; i < fetch_req.n_have_refs; i++) {
921 struct got_object_id *id;
924 err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
926 if (err->code == GOT_ERR_PRIVSEP_PIPE)
930 if (imsg.hdr.type == GOT_IMSG_STOP)
932 if (imsg.hdr.type != GOT_IMSG_FETCH_HAVE_REF) {
933 err = got_error(GOT_ERR_PRIVSEP_MSG);
936 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
937 if (datalen < sizeof(href)) {
938 err = got_error(GOT_ERR_PRIVSEP_LEN);
941 memcpy(&href, imsg.data, sizeof(href));
942 if (datalen - sizeof(href) < href.name_len) {
943 err = got_error(GOT_ERR_PRIVSEP_LEN);
946 refname = strndup(imsg.data + sizeof(href), href.name_len);
947 if (refname == NULL) {
948 err = got_error_from_errno("strndup");
952 id = malloc(sizeof(*id));
955 err = got_error_from_errno("malloc");
958 memcpy(id, &href.id, sizeof(*id));
959 err = got_pathlist_append(&have_refs, refname, id);
969 for (i = 0; i < fetch_req.n_wanted_branches; i++) {
972 err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
974 if (err->code == GOT_ERR_PRIVSEP_PIPE)
978 if (imsg.hdr.type == GOT_IMSG_STOP)
980 if (imsg.hdr.type != GOT_IMSG_FETCH_WANTED_BRANCH) {
981 err = got_error(GOT_ERR_PRIVSEP_MSG);
984 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
985 if (datalen < sizeof(wbranch)) {
986 err = got_error(GOT_ERR_PRIVSEP_LEN);
989 memcpy(&wbranch, imsg.data, sizeof(wbranch));
990 if (datalen - sizeof(wbranch) < wbranch.name_len) {
991 err = got_error(GOT_ERR_PRIVSEP_LEN);
994 refname = strndup(imsg.data + sizeof(wbranch),
996 if (refname == NULL) {
997 err = got_error_from_errno("strndup");
1001 err = got_pathlist_append(&wanted_branches, refname, NULL);
1010 for (i = 0; i < fetch_req.n_wanted_refs; i++) {
1013 err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
1015 if (err->code == GOT_ERR_PRIVSEP_PIPE)
1019 if (imsg.hdr.type == GOT_IMSG_STOP)
1021 if (imsg.hdr.type != GOT_IMSG_FETCH_WANTED_REF) {
1022 err = got_error(GOT_ERR_PRIVSEP_MSG);
1025 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1026 if (datalen < sizeof(wref)) {
1027 err = got_error(GOT_ERR_PRIVSEP_LEN);
1030 memcpy(&wref, imsg.data, sizeof(wref));
1031 if (datalen - sizeof(wref) < wref.name_len) {
1032 err = got_error(GOT_ERR_PRIVSEP_LEN);
1035 refname = strndup(imsg.data + sizeof(wref), wref.name_len);
1036 if (refname == NULL) {
1037 err = got_error_from_errno("strndup");
1041 err = got_pathlist_append(&wanted_refs, refname, NULL);
1050 err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
1052 if (err->code == GOT_ERR_PRIVSEP_PIPE)
1056 if (imsg.hdr.type == GOT_IMSG_STOP)
1058 if (imsg.hdr.type != GOT_IMSG_FETCH_OUTFD) {
1059 err = got_error(GOT_ERR_PRIVSEP_MSG);
1062 if (imsg.hdr.len - IMSG_HEADER_SIZE != 0) {
1063 err = got_error(GOT_ERR_PRIVSEP_LEN);
1068 err = fetch_pack(fetchfd, packfd, pack_sha1, &have_refs,
1069 fetch_req.fetch_all_branches, &wanted_branches,
1070 &wanted_refs, fetch_req.list_refs_only,
1071 worktree_branch, remote_head, fetch_req.no_head, &ibuf);
1073 free(worktree_branch);
1075 got_pathlist_free(&have_refs, GOT_PATHLIST_FREE_ALL);
1076 got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_PATH);
1077 if (fetchfd != -1 && close(fetchfd) == -1 && err == NULL)
1078 err = got_error_from_errno("close");
1079 if (packfd != -1 && close(packfd) == -1 && err == NULL)
1080 err = got_error_from_errno("close");
1082 got_privsep_send_error(&ibuf, err);
1084 err = send_fetch_done(&ibuf, pack_sha1);
1086 fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
1087 got_privsep_send_error(&ibuf, err);