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portable: HOST_NAME_MAX
[got-portable.git] / lib / privsep.c
blobd56e19fc2744b0f22deaf1ece97b29a917c4747d
1 /*
2 * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
3 * Copyright (c) 2020 Ori Bernstein <ori@openbsd.org>
4 *
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.
8 *
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.
16 */
17
18 #include <sys/types.h>
19 #include <sys/queue.h>
20 #include <sys/uio.h>
21 #include <sys/wait.h>
22
23 #include <ctype.h>
24 #include <limits.h>
25 #include <signal.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29 #include <errno.h>
30 #include <stdint.h>
31 #include <poll.h>
32 #include <imsg.h>
33 #include <unistd.h>
34 #include <zlib.h>
35
36 #include "got_compat.h"
37
38 #include "got_object.h"
39 #include "got_error.h"
40 #include "got_path.h"
41 #include "got_repository.h"
42
43 #include "got_lib_hash.h"
44 #include "got_lib_delta.h"
45 #include "got_lib_inflate.h"
46 #include "got_lib_object.h"
47 #include "got_lib_object_parse.h"
48 #include "got_lib_object_qid.h"
49 #include "got_lib_privsep.h"
50 #include "got_lib_pack.h"
51 #include "got_lib_poll.h"
52
53 #include "got_privsep.h"
54
55 #ifndef MIN
56 #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
57 #endif
58
59 #ifndef nitems
60 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
61 #endif
62
63 static const struct got_error *
64 read_imsg(struct imsgbuf *ibuf)
65 {
66 const struct got_error *err;
67 size_t n;
68
69 err = got_poll_fd(ibuf->fd, POLLIN, INFTIM);
70 if (err) {
71 if (err->code == GOT_ERR_EOF)
72 return got_error(GOT_ERR_PRIVSEP_PIPE);
73 return err;
74 }
75
76 n = imsg_read(ibuf);
77 if (n == -1) {
78 if (errno == EAGAIN) /* Could be a file-descriptor leak. */
79 return got_error(GOT_ERR_PRIVSEP_NO_FD);
80 return got_error(GOT_ERR_PRIVSEP_READ);
81 }
82 if (n == 0)
83 return got_error(GOT_ERR_PRIVSEP_PIPE);
84
85 return NULL;
86 }
87
88 const struct got_error *
89 got_privsep_wait_for_child(pid_t pid)
90 {
91 int child_status;
92
93 if (waitpid(pid, &child_status, 0) == -1)
94 return got_error_from_errno("waitpid");
95
96 if (!WIFEXITED(child_status))
97 return got_error(GOT_ERR_PRIVSEP_DIED);
98
99 if (WEXITSTATUS(child_status) != 0)
100 return got_error(GOT_ERR_PRIVSEP_EXIT);
101
102 return NULL;
103 }
104
105 static const struct got_error *
106 recv_imsg_error(struct imsg *imsg, size_t datalen)
107 {
108 struct got_imsg_error *ierr;
109
110 if (datalen != sizeof(*ierr))
111 return got_error(GOT_ERR_PRIVSEP_LEN);
112
113 ierr = imsg->data;
114 if (ierr->code == GOT_ERR_ERRNO) {
115 static struct got_error serr;
116 serr.code = GOT_ERR_ERRNO;
117 serr.msg = strerror(ierr->errno_code);
118 return &serr;
119 }
120
121 return got_error(ierr->code);
122 }
123
124 const struct got_error *
125 got_privsep_recv_imsg(struct imsg *imsg, struct imsgbuf *ibuf,
126 size_t min_datalen)
127 {
128 const struct got_error *err;
129 ssize_t n;
130
131 n = imsg_get(ibuf, imsg);
132 if (n == -1)
133 return got_error_from_errno("imsg_get");
134
135 while (n == 0) {
136 err = read_imsg(ibuf);
137 if (err)
138 return err;
139 n = imsg_get(ibuf, imsg);
140 if (n == -1)
141 return got_error_from_errno("imsg_get");
142 }
143
144 if (imsg->hdr.len < IMSG_HEADER_SIZE + min_datalen)
145 return got_error(GOT_ERR_PRIVSEP_LEN);
146
147 if (imsg->hdr.type == GOT_IMSG_ERROR) {
148 size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
149 return recv_imsg_error(imsg, datalen);
150 }
151
152 return NULL;
153 }
154
155 /* Attempt to send an error in an imsg. Complain on stderr as a last resort. */
156 void
157 got_privsep_send_error(struct imsgbuf *ibuf, const struct got_error *err)
158 {
159 const struct got_error *poll_err;
160 struct got_imsg_error ierr;
161 int ret;
162
163 ierr.code = err->code;
164 if (err->code == GOT_ERR_ERRNO)
165 ierr.errno_code = errno;
166 else
167 ierr.errno_code = 0;
168 ret = imsg_compose(ibuf, GOT_IMSG_ERROR, 0, 0, -1, &ierr, sizeof(ierr));
169 if (ret == -1) {
170 fprintf(stderr, "%s: error %d \"%s\": imsg_compose: %s\n",
171 getprogname(), err->code, err->msg, strerror(errno));
172 return;
173 }
174
175 poll_err = got_poll_fd(ibuf->fd, POLLOUT, INFTIM);
176 if (poll_err) {
177 fprintf(stderr, "%s: error %d \"%s\": poll: %s\n",
178 getprogname(), err->code, err->msg, poll_err->msg);
179 return;
180 }
181
182 ret = imsg_flush(ibuf);
183 if (ret == -1) {
184 fprintf(stderr, "%s: error %d \"%s\": imsg_flush: %s\n",
185 getprogname(), err->code, err->msg, strerror(errno));
186 imsg_clear(ibuf);
187 return;
188 }
189 }
190
191 static const struct got_error *
192 flush_imsg(struct imsgbuf *ibuf)
193 {
194 const struct got_error *err;
195
196 err = got_poll_fd(ibuf->fd, POLLOUT, INFTIM);
197 if (err)
198 return err;
199
200 if (imsg_flush(ibuf) == -1) {
201 imsg_clear(ibuf);
202 return got_error_from_errno("imsg_flush");
203 }
204
205 return NULL;
206 }
207
208 const struct got_error *
209 got_privsep_flush_imsg(struct imsgbuf *ibuf)
210 {
211 return flush_imsg(ibuf);
212 }
213
214 const struct got_error *
215 got_privsep_send_stop(int fd)
216 {
217 const struct got_error *err = NULL;
218 struct imsgbuf ibuf;
219
220 imsg_init(&ibuf, fd);
221
222 if (imsg_compose(&ibuf, GOT_IMSG_STOP, 0, 0, -1, NULL, 0) == -1)
223 return got_error_from_errno("imsg_compose STOP");
224
225 err = flush_imsg(&ibuf);
226 return err;
227 }
228
229 const struct got_error *
230 got_privsep_send_obj_req(struct imsgbuf *ibuf, int fd,
231 struct got_object_id *id)
232 {
233 if (imsg_compose(ibuf, GOT_IMSG_OBJECT_REQUEST, 0, 0, fd,
234 id, sizeof(*id)) == -1)
235 return got_error_from_errno("imsg_compose OBJECT_REQUEST");
236
237 return flush_imsg(ibuf);
238 }
239
240 const struct got_error *
241 got_privsep_send_raw_obj_req(struct imsgbuf *ibuf, int fd,
242 struct got_object_id *id)
243 {
244 if (imsg_compose(ibuf, GOT_IMSG_RAW_OBJECT_REQUEST, 0, 0, fd,
245 id, sizeof(*id)) == -1)
246 return got_error_from_errno("imsg_compose RAW_OBJECT_REQUEST");
247
248 return flush_imsg(ibuf);
249 }
250
251 const struct got_error *
252 got_privsep_send_raw_obj_outfd(struct imsgbuf *ibuf, int outfd)
253 {
254 const struct got_error *err = NULL;
255
256 if (imsg_compose(ibuf, GOT_IMSG_RAW_OBJECT_OUTFD, 0, 0, outfd, NULL, 0)
257 == -1) {
258 err = got_error_from_errno("imsg_compose RAW_OBJECT_OUTFD");
259 close(outfd);
260 return err;
261 }
262
263 return flush_imsg(ibuf);
264 }
265
266 const struct got_error *
267 got_privsep_send_raw_obj(struct imsgbuf *ibuf, off_t size, size_t hdrlen,
268 uint8_t *data)
269 {
270 const struct got_error *err = NULL;
271 struct got_imsg_raw_obj iobj;
272 size_t len = sizeof(iobj);
273 struct ibuf *wbuf;
274
275 memset(&iobj, 0, sizeof(iobj));
276 iobj.hdrlen = hdrlen;
277 iobj.size = size;
278
279 if (data && size + hdrlen <= GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX)
280 len += (size_t)size + hdrlen;
281
282 wbuf = imsg_create(ibuf, GOT_IMSG_RAW_OBJECT, 0, 0, len);
283 if (wbuf == NULL) {
284 err = got_error_from_errno("imsg_create RAW_OBJECT");
285 return err;
286 }
287
288 if (imsg_add(wbuf, &iobj, sizeof(iobj)) == -1)
289 return got_error_from_errno("imsg_add RAW_OBJECT");
290
291 if (data && size + hdrlen <= GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX) {
292 if (imsg_add(wbuf, data, size + hdrlen) == -1)
293 return got_error_from_errno("imsg_add RAW_OBJECT");
294 }
295
296 wbuf->fd = -1;
297 imsg_close(ibuf, wbuf);
298
299 return flush_imsg(ibuf);
300 }
301
302 const struct got_error *
303 got_privsep_recv_raw_obj(uint8_t **outbuf, off_t *size, size_t *hdrlen,
304 struct imsgbuf *ibuf)
305 {
306 const struct got_error *err = NULL;
307 struct imsg imsg;
308 struct got_imsg_raw_obj *iobj;
309 size_t datalen;
310
311 *outbuf = NULL;
312
313 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
314 if (err)
315 return err;
316
317 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
318
319 switch (imsg.hdr.type) {
320 case GOT_IMSG_RAW_OBJECT:
321 if (datalen < sizeof(*iobj)) {
322 err = got_error(GOT_ERR_PRIVSEP_LEN);
323 break;
324 }
325 iobj = imsg.data;
326 *size = iobj->size;
327 *hdrlen = iobj->hdrlen;
328
329 if (datalen == sizeof(*iobj)) {
330 /* Data has been written to file descriptor. */
331 break;
332 }
333
334 if (*size < 0 ||
335 *size + *hdrlen > GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX) {
336 err = got_error(GOT_ERR_PRIVSEP_LEN);
337 break;
338 }
339
340 *outbuf = malloc(*size + *hdrlen);
341 if (*outbuf == NULL) {
342 err = got_error_from_errno("malloc");
343 break;
344 }
345 memcpy(*outbuf, imsg.data + sizeof(*iobj), *size + *hdrlen);
346 break;
347 default:
348 err = got_error(GOT_ERR_PRIVSEP_MSG);
349 break;
350 }
351
352 imsg_free(&imsg);
353
354 return err;
355 }
356
357 const struct got_error *
358 got_privsep_send_commit_req(struct imsgbuf *ibuf, int fd,
359 struct got_object_id *id, int pack_idx)
360 {
361 const struct got_error *err = NULL;
362 struct got_imsg_packed_object iobj;
363 void *data;
364 size_t len;
365
366 memset(&iobj, 0, sizeof(iobj));
367 if (pack_idx != -1) { /* commit is packed */
368 iobj.idx = pack_idx;
369 memcpy(&iobj.id, id, sizeof(iobj.id));
370 data = &iobj;
371 len = sizeof(iobj);
372 } else {
373 data = id;
374 len = sizeof(*id);
375 }
376
377 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_REQUEST, 0, 0, fd, data, len)
378 == -1) {
379 err = got_error_from_errno("imsg_compose COMMIT_REQUEST");
380 close(fd);
381 return err;
382 }
383
384 return flush_imsg(ibuf);
385 }
386
387 const struct got_error *
388 got_privsep_send_tree_req(struct imsgbuf *ibuf, int fd,
389 struct got_object_id *id, int pack_idx)
390 {
391 struct ibuf *wbuf;
392 size_t len;
393
394 if (pack_idx != -1)
395 len = sizeof(struct got_imsg_packed_object);
396 else
397 len = sizeof(*id);
398
399 wbuf = imsg_create(ibuf, GOT_IMSG_TREE_REQUEST, 0, 0, len);
400 if (wbuf == NULL)
401 return got_error_from_errno("imsg_create TREE_REQUEST");
402
403 if (imsg_add(wbuf, id, sizeof(*id)) == -1)
404 return got_error_from_errno("imsg_add TREE_REQUEST");
405
406 if (pack_idx != -1) { /* tree is packed */
407 if (imsg_add(wbuf, &pack_idx, sizeof(pack_idx)) == -1)
408 return got_error_from_errno("imsg_add TREE_REQUEST");
409 }
410
411 wbuf->fd = fd;
412 imsg_close(ibuf, wbuf);
413
414 return flush_imsg(ibuf);
415 }
416
417 const struct got_error *
418 got_privsep_send_tag_req(struct imsgbuf *ibuf, int fd,
419 struct got_object_id *id, int pack_idx)
420 {
421 struct got_imsg_packed_object iobj;
422 void *data;
423 size_t len;
424
425 memset(&iobj, 0, sizeof(iobj));
426 if (pack_idx != -1) { /* tag is packed */
427 iobj.idx = pack_idx;
428 memcpy(&iobj.id, id, sizeof(iobj.id));
429 data = &iobj;
430 len = sizeof(iobj);
431 } else {
432 data = id;
433 len = sizeof(*id);
434 }
435
436 if (imsg_compose(ibuf, GOT_IMSG_TAG_REQUEST, 0, 0, fd, data, len)
437 == -1)
438 return got_error_from_errno("imsg_compose TAG_REQUEST");
439
440 return flush_imsg(ibuf);
441 }
442
443 const struct got_error *
444 got_privsep_send_blob_req(struct imsgbuf *ibuf, int infd,
445 struct got_object_id *id, int pack_idx)
446 {
447 const struct got_error *err = NULL;
448 struct got_imsg_packed_object iobj;
449 void *data;
450 size_t len;
451
452 memset(&iobj, 0, sizeof(iobj));
453 if (pack_idx != -1) { /* blob is packed */
454 iobj.idx = pack_idx;
455 memcpy(&iobj.id, id, sizeof(iobj.id));
456 data = &iobj;
457 len = sizeof(iobj);
458 } else {
459 data = id;
460 len = sizeof(*id);
461 }
462
463 if (imsg_compose(ibuf, GOT_IMSG_BLOB_REQUEST, 0, 0, infd, data, len)
464 == -1) {
465 err = got_error_from_errno("imsg_compose BLOB_REQUEST");
466 close(infd);
467 return err;
468 }
469
470 return flush_imsg(ibuf);
471 }
472
473 const struct got_error *
474 got_privsep_send_blob_outfd(struct imsgbuf *ibuf, int outfd)
475 {
476 const struct got_error *err = NULL;
477
478 if (imsg_compose(ibuf, GOT_IMSG_BLOB_OUTFD, 0, 0, outfd, NULL, 0)
479 == -1) {
480 err = got_error_from_errno("imsg_compose BLOB_OUTFD");
481 close(outfd);
482 return err;
483 }
484
485 return flush_imsg(ibuf);
486 }
487
488 static const struct got_error *
489 send_fd(struct imsgbuf *ibuf, int imsg_code, int fd)
490 {
491 const struct got_error *err = NULL;
492
493 if (imsg_compose(ibuf, imsg_code, 0, 0, fd, NULL, 0) == -1) {
494 err = got_error_from_errno("imsg_compose TMPFD");
495 close(fd);
496 return err;
497 }
498
499 return flush_imsg(ibuf);
500 }
501
502 const struct got_error *
503 got_privsep_send_tmpfd(struct imsgbuf *ibuf, int fd)
504 {
505 return send_fd(ibuf, GOT_IMSG_TMPFD, fd);
506 }
507
508 const struct got_error *
509 got_privsep_send_obj(struct imsgbuf *ibuf, struct got_object *obj)
510 {
511 struct got_imsg_object iobj;
512
513 memset(&iobj, 0, sizeof(iobj));
514
515 memcpy(&iobj.id, &obj->id, sizeof(iobj.id));
516 iobj.type = obj->type;
517 iobj.flags = obj->flags;
518 iobj.hdrlen = obj->hdrlen;
519 iobj.size = obj->size;
520 if (iobj.flags & GOT_OBJ_FLAG_PACKED) {
521 iobj.pack_offset = obj->pack_offset;
522 iobj.pack_idx = obj->pack_idx;
523 }
524
525 if (imsg_compose(ibuf, GOT_IMSG_OBJECT, 0, 0, -1, &iobj, sizeof(iobj))
526 == -1)
527 return got_error_from_errno("imsg_compose OBJECT");
528
529 return flush_imsg(ibuf);
530 }
531
532 const struct got_error *
533 got_privsep_send_fetch_req(struct imsgbuf *ibuf, int fd,
534 struct got_pathlist_head *have_refs, int fetch_all_branches,
535 struct got_pathlist_head *wanted_branches,
536 struct got_pathlist_head *wanted_refs, int list_refs_only,
537 const char *worktree_branch, const char *remote_head,
538 int no_head, int verbosity)
539 {
540 const struct got_error *err = NULL;
541 struct ibuf *wbuf;
542 struct got_pathlist_entry *pe;
543 struct got_imsg_fetch_request fetchreq;
544 size_t remote_head_len, worktree_branch_len, len = sizeof(fetchreq);
545
546 if (worktree_branch) {
547 worktree_branch_len = strlen(worktree_branch);
548 len += worktree_branch_len;
549 }
550 if (remote_head) {
551 remote_head_len = strlen(remote_head);
552 len += remote_head_len;
553 }
554
555 if (len >= MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
556 close(fd);
557 return got_error(GOT_ERR_NO_SPACE);
558 }
559
560 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_REQUEST, 0, 0, len);
561 if (wbuf == NULL)
562 return got_error_from_errno("imsg_create FETCH_HAVE_REF");
563
564 memset(&fetchreq, 0, sizeof(fetchreq));
565 fetchreq.no_head = no_head;
566 fetchreq.fetch_all_branches = fetch_all_branches;
567 fetchreq.list_refs_only = list_refs_only;
568 fetchreq.verbosity = verbosity;
569 if (worktree_branch != NULL)
570 fetchreq.worktree_branch_len = worktree_branch_len;
571 if (remote_head != NULL)
572 fetchreq.remote_head_len = remote_head_len;
573 TAILQ_FOREACH(pe, have_refs, entry)
574 fetchreq.n_have_refs++;
575 TAILQ_FOREACH(pe, wanted_branches, entry)
576 fetchreq.n_wanted_branches++;
577 TAILQ_FOREACH(pe, wanted_refs, entry)
578 fetchreq.n_wanted_refs++;
579 if (imsg_add(wbuf, &fetchreq, sizeof(fetchreq)) == -1)
580 return got_error_from_errno("imsg_add FETCH_REQUEST");
581 if (worktree_branch) {
582 if (imsg_add(wbuf, worktree_branch, worktree_branch_len) == -1)
583 return got_error_from_errno("imsg_add FETCH_REQUEST");
584 }
585 if (remote_head) {
586 if (imsg_add(wbuf, remote_head, remote_head_len) == -1)
587 return got_error_from_errno("imsg_add FETCH_REQUEST");
588 }
589 wbuf->fd = fd;
590 imsg_close(ibuf, wbuf);
591
592 err = flush_imsg(ibuf);
593 if (err) {
594 close(fd);
595 return err;
596 }
597 fd = -1;
598
599 TAILQ_FOREACH(pe, have_refs, entry) {
600 const char *name = pe->path;
601 size_t name_len = pe->path_len;
602 struct got_object_id *id = pe->data;
603
604 len = sizeof(struct got_imsg_fetch_have_ref) + name_len;
605 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_HAVE_REF, 0, 0, len);
606 if (wbuf == NULL)
607 return got_error_from_errno("imsg_create FETCH_HAVE_REF");
608
609 /* Keep in sync with struct got_imsg_fetch_have_ref! */
610 if (imsg_add(wbuf, id, sizeof(*id)) == -1)
611 return got_error_from_errno("imsg_add FETCH_HAVE_REF");
612 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1)
613 return got_error_from_errno("imsg_add FETCH_HAVE_REF");
614 if (imsg_add(wbuf, name, name_len) == -1)
615 return got_error_from_errno("imsg_add FETCH_HAVE_REF");
616
617 wbuf->fd = -1;
618 imsg_close(ibuf, wbuf);
619 err = flush_imsg(ibuf);
620 if (err)
621 return err;
622 }
623
624 TAILQ_FOREACH(pe, wanted_branches, entry) {
625 const char *name = pe->path;
626 size_t name_len = pe->path_len;
627
628 len = sizeof(struct got_imsg_fetch_wanted_branch) + name_len;
629 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_WANTED_BRANCH, 0, 0,
630 len);
631 if (wbuf == NULL)
632 return got_error_from_errno(
633 "imsg_create FETCH_WANTED_BRANCH");
634
635 /* Keep in sync with struct got_imsg_fetch_wanted_branch! */
636 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1)
637 return got_error_from_errno(
638 "imsg_add FETCH_WANTED_BRANCH");
639 if (imsg_add(wbuf, name, name_len) == -1)
640 return got_error_from_errno(
641 "imsg_add FETCH_WANTED_BRANCH");
642
643 wbuf->fd = -1;
644 imsg_close(ibuf, wbuf);
645 err = flush_imsg(ibuf);
646 if (err)
647 return err;
648 }
649
650 TAILQ_FOREACH(pe, wanted_refs, entry) {
651 const char *name = pe->path;
652 size_t name_len = pe->path_len;
653
654 len = sizeof(struct got_imsg_fetch_wanted_ref) + name_len;
655 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_WANTED_REF, 0, 0,
656 len);
657 if (wbuf == NULL)
658 return got_error_from_errno(
659 "imsg_create FETCH_WANTED_REF");
660
661 /* Keep in sync with struct got_imsg_fetch_wanted_ref! */
662 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1)
663 return got_error_from_errno(
664 "imsg_add FETCH_WANTED_REF");
665 if (imsg_add(wbuf, name, name_len) == -1)
666 return got_error_from_errno(
667 "imsg_add FETCH_WANTED_REF");
668
669 wbuf->fd = -1;
670 imsg_close(ibuf, wbuf);
671 err = flush_imsg(ibuf);
672 if (err)
673 return err;
674 }
675
676
677 return NULL;
678
679 }
680
681 const struct got_error *
682 got_privsep_send_fetch_outfd(struct imsgbuf *ibuf, int fd)
683 {
684 return send_fd(ibuf, GOT_IMSG_FETCH_OUTFD, fd);
685 }
686
687 const struct got_error *
688 got_privsep_recv_fetch_progress(int *done, struct got_object_id **id,
689 char **refname, struct got_pathlist_head *symrefs, char **server_progress,
690 off_t *packfile_size, uint8_t *pack_sha1, struct imsgbuf *ibuf)
691 {
692 const struct got_error *err = NULL;
693 struct imsg imsg;
694 size_t datalen;
695 struct got_imsg_fetch_symrefs *isymrefs = NULL;
696 size_t n, remain;
697 off_t off;
698 int i;
699
700 *done = 0;
701 *id = NULL;
702 *refname = NULL;
703 *server_progress = NULL;
704 *packfile_size = 0;
705 memset(pack_sha1, 0, SHA1_DIGEST_LENGTH);
706
707 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
708 if (err)
709 return err;
710
711 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
712 switch (imsg.hdr.type) {
713 case GOT_IMSG_FETCH_SYMREFS:
714 if (datalen < sizeof(*isymrefs)) {
715 err = got_error(GOT_ERR_PRIVSEP_LEN);
716 break;
717 }
718 if (isymrefs != NULL) {
719 err = got_error(GOT_ERR_PRIVSEP_MSG);
720 break;
721 }
722 isymrefs = (struct got_imsg_fetch_symrefs *)imsg.data;
723 off = sizeof(*isymrefs);
724 remain = datalen - off;
725 for (n = 0; n < isymrefs->nsymrefs; n++) {
726 struct got_imsg_fetch_symref *s;
727 char *name, *target;
728 if (remain < sizeof(struct got_imsg_fetch_symref)) {
729 err = got_error(GOT_ERR_PRIVSEP_LEN);
730 goto done;
731 }
732 s = (struct got_imsg_fetch_symref *)(imsg.data + off);
733 off += sizeof(*s);
734 remain -= sizeof(*s);
735 if (remain < s->name_len) {
736 err = got_error(GOT_ERR_PRIVSEP_LEN);
737 goto done;
738 }
739 name = strndup(imsg.data + off, s->name_len);
740 if (name == NULL) {
741 err = got_error_from_errno("strndup");
742 goto done;
743 }
744 off += s->name_len;
745 remain -= s->name_len;
746 if (remain < s->target_len) {
747 err = got_error(GOT_ERR_PRIVSEP_LEN);
748 free(name);
749 goto done;
750 }
751 target = strndup(imsg.data + off, s->target_len);
752 if (target == NULL) {
753 err = got_error_from_errno("strndup");
754 free(name);
755 goto done;
756 }
757 off += s->target_len;
758 remain -= s->target_len;
759 err = got_pathlist_append(symrefs, name, target);
760 if (err) {
761 free(name);
762 free(target);
763 goto done;
764 }
765 }
766 break;
767 case GOT_IMSG_FETCH_REF:
768 if (datalen <= sizeof(**id)) {
769 err = got_error(GOT_ERR_PRIVSEP_MSG);
770 break;
771 }
772 *id = malloc(sizeof(**id));
773 if (*id == NULL) {
774 err = got_error_from_errno("malloc");
775 break;
776 }
777 memcpy(*id, imsg.data, sizeof(**id));
778 *refname = strndup(imsg.data + sizeof(**id),
779 datalen - sizeof(**id));
780 if (*refname == NULL) {
781 err = got_error_from_errno("strndup");
782 break;
783 }
784 break;
785 case GOT_IMSG_FETCH_SERVER_PROGRESS:
786 if (datalen == 0) {
787 err = got_error(GOT_ERR_PRIVSEP_LEN);
788 break;
789 }
790 *server_progress = strndup(imsg.data, datalen);
791 if (*server_progress == NULL) {
792 err = got_error_from_errno("strndup");
793 break;
794 }
795 for (i = 0; i < datalen; i++) {
796 if (!isprint((unsigned char)(*server_progress)[i]) &&
797 !isspace((unsigned char)(*server_progress)[i])) {
798 err = got_error(GOT_ERR_PRIVSEP_MSG);
799 free(*server_progress);
800 *server_progress = NULL;
801 goto done;
802 }
803 }
804 break;
805 case GOT_IMSG_FETCH_DOWNLOAD_PROGRESS:
806 if (datalen < sizeof(*packfile_size)) {
807 err = got_error(GOT_ERR_PRIVSEP_MSG);
808 break;
809 }
810 memcpy(packfile_size, imsg.data, sizeof(*packfile_size));
811 break;
812 case GOT_IMSG_FETCH_DONE:
813 if (datalen != SHA1_DIGEST_LENGTH) {
814 err = got_error(GOT_ERR_PRIVSEP_MSG);
815 break;
816 }
817 memcpy(pack_sha1, imsg.data, SHA1_DIGEST_LENGTH);
818 *done = 1;
819 break;
820 default:
821 err = got_error(GOT_ERR_PRIVSEP_MSG);
822 break;
823 }
824 done:
825 if (err) {
826 free(*id);
827 *id = NULL;
828 free(*refname);
829 *refname = NULL;
830 }
831 imsg_free(&imsg);
832 return err;
833 }
834
835 static const struct got_error *
836 send_send_ref(const char *name, size_t name_len, struct got_object_id *id,
837 int delete, struct imsgbuf *ibuf)
838 {
839 size_t len;
840 struct ibuf *wbuf;
841
842 len = sizeof(struct got_imsg_send_ref) + name_len;
843 wbuf = imsg_create(ibuf, GOT_IMSG_SEND_REF, 0, 0, len);
844 if (wbuf == NULL)
845 return got_error_from_errno("imsg_create SEND_REF");
846
847 /* Keep in sync with struct got_imsg_send_ref! */
848 if (imsg_add(wbuf, id, sizeof(*id)) == -1)
849 return got_error_from_errno("imsg_add SEND_REF");
850 if (imsg_add(wbuf, &delete, sizeof(delete)) == -1)
851 return got_error_from_errno("imsg_add SEND_REF");
852 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1)
853 return got_error_from_errno("imsg_add SEND_REF");
854 if (imsg_add(wbuf, name, name_len) == -1)
855 return got_error_from_errno("imsg_add SEND_REF");
856
857 wbuf->fd = -1;
858 imsg_close(ibuf, wbuf);
859 return flush_imsg(ibuf);
860 }
861
862 const struct got_error *
863 got_privsep_send_send_req(struct imsgbuf *ibuf, int fd,
864 struct got_pathlist_head *have_refs,
865 struct got_pathlist_head *delete_refs,
866 int verbosity)
867 {
868 const struct got_error *err = NULL;
869 struct got_pathlist_entry *pe;
870 struct got_imsg_send_request sendreq;
871 struct got_object_id zero_id;
872
873 memset(&zero_id, 0, sizeof(zero_id));
874 memset(&sendreq, 0, sizeof(sendreq));
875 sendreq.verbosity = verbosity;
876 TAILQ_FOREACH(pe, have_refs, entry)
877 sendreq.nrefs++;
878 TAILQ_FOREACH(pe, delete_refs, entry)
879 sendreq.nrefs++;
880 if (imsg_compose(ibuf, GOT_IMSG_SEND_REQUEST, 0, 0, fd,
881 &sendreq, sizeof(sendreq)) == -1) {
882 err = got_error_from_errno(
883 "imsg_compose FETCH_SERVER_PROGRESS");
884 goto done;
885 }
886
887 err = flush_imsg(ibuf);
888 if (err)
889 goto done;
890 fd = -1;
891
892 TAILQ_FOREACH(pe, have_refs, entry) {
893 const char *name = pe->path;
894 size_t name_len = pe->path_len;
895 struct got_object_id *id = pe->data;
896 err = send_send_ref(name, name_len, id, 0, ibuf);
897 if (err)
898 goto done;
899 }
900
901 TAILQ_FOREACH(pe, delete_refs, entry) {
902 const char *name = pe->path;
903 size_t name_len = pe->path_len;
904 err = send_send_ref(name, name_len, &zero_id, 1, ibuf);
905 if (err)
906 goto done;
907 }
908 done:
909 if (fd != -1 && close(fd) == -1 && err == NULL)
910 err = got_error_from_errno("close");
911 return err;
912
913 }
914
915 const struct got_error *
916 got_privsep_recv_send_remote_refs(struct got_pathlist_head *remote_refs,
917 struct imsgbuf *ibuf)
918 {
919 const struct got_error *err = NULL;
920 struct imsg imsg;
921 size_t datalen;
922 int done = 0;
923 struct got_imsg_send_remote_ref iremote_ref;
924 struct got_object_id *id = NULL;
925 char *refname = NULL;
926 struct got_pathlist_entry *new;
927
928 while (!done) {
929 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
930 if (err)
931 return err;
932 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
933 switch (imsg.hdr.type) {
934 case GOT_IMSG_SEND_REMOTE_REF:
935 if (datalen < sizeof(iremote_ref)) {
936 err = got_error(GOT_ERR_PRIVSEP_MSG);
937 goto done;
938 }
939 memcpy(&iremote_ref, imsg.data, sizeof(iremote_ref));
940 if (datalen != sizeof(iremote_ref) +
941 iremote_ref.name_len) {
942 err = got_error(GOT_ERR_PRIVSEP_MSG);
943 goto done;
944 }
945 id = malloc(sizeof(*id));
946 if (id == NULL) {
947 err = got_error_from_errno("malloc");
948 goto done;
949 }
950 memcpy(id, &iremote_ref.id, sizeof(*id));
951 refname = strndup(imsg.data + sizeof(iremote_ref),
952 datalen - sizeof(iremote_ref));
953 if (refname == NULL) {
954 err = got_error_from_errno("strndup");
955 goto done;
956 }
957 err = got_pathlist_insert(&new, remote_refs,
958 refname, id);
959 if (err)
960 goto done;
961 if (new == NULL) { /* duplicate which wasn't inserted */
962 free(id);
963 free(refname);
964 }
965 id = NULL;
966 refname = NULL;
967 break;
968 case GOT_IMSG_SEND_PACK_REQUEST:
969 if (datalen != 0) {
970 err = got_error(GOT_ERR_PRIVSEP_MSG);
971 goto done;
972 }
973 /* got-send-pack is now waiting for a pack file. */
974 done = 1;
975 break;
976 default:
977 err = got_error(GOT_ERR_PRIVSEP_MSG);
978 break;
979 }
980 }
981 done:
982 free(id);
983 free(refname);
984 imsg_free(&imsg);
985 return err;
986 }
987
988 const struct got_error *
989 got_privsep_send_packfd(struct imsgbuf *ibuf, int fd)
990 {
991 return send_fd(ibuf, GOT_IMSG_SEND_PACKFD, fd);
992 }
993
994 const struct got_error *
995 got_privsep_recv_send_progress(int *done, off_t *bytes_sent,
996 int *success, char **refname, char **errmsg, struct imsgbuf *ibuf)
997 {
998 const struct got_error *err = NULL;
999 struct imsg imsg;
1000 size_t datalen;
1001 struct got_imsg_send_ref_status iref_status;
1002
1003 /* Do not reset the current value of 'bytes_sent', it accumulates. */
1004 *done = 0;
1005 *success = 0;
1006 *refname = NULL;
1007 *errmsg = NULL;
1008
1009 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1010 if (err)
1011 return err;
1012
1013 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1014 switch (imsg.hdr.type) {
1015 case GOT_IMSG_SEND_UPLOAD_PROGRESS:
1016 if (datalen < sizeof(*bytes_sent)) {
1017 err = got_error(GOT_ERR_PRIVSEP_MSG);
1018 break;
1019 }
1020 memcpy(bytes_sent, imsg.data, sizeof(*bytes_sent));
1021 break;
1022 case GOT_IMSG_SEND_REF_STATUS:
1023 if (datalen < sizeof(iref_status)) {
1024 err = got_error(GOT_ERR_PRIVSEP_MSG);
1025 break;
1026 }
1027 memcpy(&iref_status, imsg.data, sizeof(iref_status));
1028 if (datalen != sizeof(iref_status) + iref_status.name_len +
1029 iref_status.errmsg_len) {
1030 err = got_error(GOT_ERR_PRIVSEP_MSG);
1031 break;
1032 }
1033 *success = iref_status.success;
1034 *refname = strndup(imsg.data + sizeof(iref_status),
1035 iref_status.name_len);
1036
1037 if (iref_status.errmsg_len != 0)
1038 *errmsg = strndup(imsg.data + sizeof(iref_status) +
1039 iref_status.name_len, iref_status.errmsg_len);
1040 break;
1041 case GOT_IMSG_SEND_DONE:
1042 if (datalen != 0) {
1043 err = got_error(GOT_ERR_PRIVSEP_MSG);
1044 break;
1045 }
1046 *done = 1;
1047 break;
1048 default:
1049 err = got_error(GOT_ERR_PRIVSEP_MSG);
1050 break;
1051 }
1052
1053 imsg_free(&imsg);
1054 return err;
1055 }
1056
1057 const struct got_error *
1058 got_privsep_send_index_pack_req(struct imsgbuf *ibuf, uint8_t *pack_sha1,
1059 int fd)
1060 {
1061 const struct got_error *err = NULL;
1062
1063 /* Keep in sync with struct got_imsg_index_pack_request */
1064 if (imsg_compose(ibuf, GOT_IMSG_IDXPACK_REQUEST, 0, 0, fd,
1065 pack_sha1, SHA1_DIGEST_LENGTH) == -1) {
1066 err = got_error_from_errno("imsg_compose INDEX_REQUEST");
1067 close(fd);
1068 return err;
1069 }
1070 return flush_imsg(ibuf);
1071 }
1072
1073 const struct got_error *
1074 got_privsep_send_index_pack_outfd(struct imsgbuf *ibuf, int fd)
1075 {
1076 return send_fd(ibuf, GOT_IMSG_IDXPACK_OUTFD, fd);
1077 }
1078
1079 const struct got_error *
1080 got_privsep_recv_index_progress(int *done, int *nobj_total,
1081 int *nobj_indexed, int *nobj_loose, int *nobj_resolved,
1082 struct imsgbuf *ibuf)
1083 {
1084 const struct got_error *err = NULL;
1085 struct imsg imsg;
1086 struct got_imsg_index_pack_progress *iprogress;
1087 size_t datalen;
1088
1089 *done = 0;
1090 *nobj_total = 0;
1091 *nobj_indexed = 0;
1092 *nobj_resolved = 0;
1093
1094 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1095 if (err)
1096 return err;
1097
1098 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1099 switch (imsg.hdr.type) {
1100 case GOT_IMSG_IDXPACK_PROGRESS:
1101 if (datalen < sizeof(*iprogress)) {
1102 err = got_error(GOT_ERR_PRIVSEP_LEN);
1103 break;
1104 }
1105 iprogress = (struct got_imsg_index_pack_progress *)imsg.data;
1106 if (iprogress->nobj_total < 0 || iprogress->nobj_indexed < 0 ||
1107 iprogress->nobj_loose < 0 || iprogress->nobj_resolved < 0) {
1108 err = got_error(GOT_ERR_RANGE);
1109 break;
1110 }
1111 *nobj_total = iprogress->nobj_total;
1112 *nobj_indexed = iprogress->nobj_indexed;
1113 *nobj_loose = iprogress->nobj_loose;
1114 *nobj_resolved = iprogress->nobj_resolved;
1115 break;
1116 case GOT_IMSG_IDXPACK_DONE:
1117 if (datalen != 0) {
1118 err = got_error(GOT_ERR_PRIVSEP_LEN);
1119 break;
1120 }
1121 *done = 1;
1122 break;
1123 default:
1124 err = got_error(GOT_ERR_PRIVSEP_MSG);
1125 break;
1126 }
1127
1128 imsg_free(&imsg);
1129 return err;
1130 }
1131
1132 const struct got_error *
1133 got_privsep_get_imsg_obj(struct got_object **obj, struct imsg *imsg,
1134 struct imsgbuf *ibuf)
1135 {
1136 struct got_imsg_object *iobj;
1137 size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
1138
1139 if (datalen != sizeof(*iobj))
1140 return got_error(GOT_ERR_PRIVSEP_LEN);
1141 iobj = imsg->data;
1142
1143 if (iobj->pack_offset < 0)
1144 return got_error(GOT_ERR_PACK_OFFSET);
1145
1146 *obj = calloc(1, sizeof(**obj));
1147 if (*obj == NULL)
1148 return got_error_from_errno("calloc");
1149
1150 memcpy(&(*obj)->id, &iobj->id, sizeof(iobj->id));
1151 (*obj)->type = iobj->type;
1152 (*obj)->flags = iobj->flags;
1153 (*obj)->hdrlen = iobj->hdrlen;
1154 (*obj)->size = iobj->size;
1155 /* path_packfile is handled by caller */
1156 if (iobj->flags & GOT_OBJ_FLAG_PACKED) {
1157 (*obj)->pack_offset = iobj->pack_offset;
1158 (*obj)->pack_idx = iobj->pack_idx;
1159 }
1160 STAILQ_INIT(&(*obj)->deltas.entries);
1161 return NULL;
1162 }
1163
1164 const struct got_error *
1165 got_privsep_recv_obj(struct got_object **obj, struct imsgbuf *ibuf)
1166 {
1167 const struct got_error *err = NULL;
1168 struct imsg imsg;
1169 const size_t min_datalen =
1170 MIN(sizeof(struct got_imsg_error), sizeof(struct got_imsg_object));
1171
1172 *obj = NULL;
1173
1174 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1175 if (err)
1176 return err;
1177
1178 switch (imsg.hdr.type) {
1179 case GOT_IMSG_OBJECT:
1180 err = got_privsep_get_imsg_obj(obj, &imsg, ibuf);
1181 break;
1182 default:
1183 err = got_error(GOT_ERR_PRIVSEP_MSG);
1184 break;
1185 }
1186
1187 imsg_free(&imsg);
1188
1189 return err;
1190 }
1191
1192 static const struct got_error *
1193 send_commit_logmsg(struct imsgbuf *ibuf, struct got_commit_object *commit,
1194 size_t logmsg_len)
1195 {
1196 const struct got_error *err = NULL;
1197 size_t offset, remain;
1198
1199 offset = 0;
1200 remain = logmsg_len;
1201 while (remain > 0) {
1202 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain);
1203
1204 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_LOGMSG, 0, 0, -1,
1205 commit->logmsg + offset, n) == -1) {
1206 err = got_error_from_errno("imsg_compose "
1207 "COMMIT_LOGMSG");
1208 break;
1209 }
1210
1211 err = flush_imsg(ibuf);
1212 if (err)
1213 break;
1214
1215 offset += n;
1216 remain -= n;
1217 }
1218
1219 return err;
1220 }
1221
1222 const struct got_error *
1223 got_privsep_send_commit(struct imsgbuf *ibuf, struct got_commit_object *commit)
1224 {
1225 const struct got_error *err = NULL;
1226 struct got_imsg_commit_object *icommit;
1227 uint8_t *buf;
1228 size_t len, total;
1229 struct got_object_qid *qid;
1230 size_t author_len = strlen(commit->author);
1231 size_t committer_len = strlen(commit->committer);
1232 size_t logmsg_len = strlen(commit->logmsg);
1233
1234 total = sizeof(*icommit) + author_len + committer_len +
1235 commit->nparents * sizeof(struct got_object_id);
1236
1237 buf = malloc(total);
1238 if (buf == NULL)
1239 return got_error_from_errno("malloc");
1240
1241 icommit = (struct got_imsg_commit_object *)buf;
1242 memcpy(&icommit->tree_id, commit->tree_id, sizeof(icommit->tree_id));
1243 icommit->author_len = author_len;
1244 icommit->author_time = commit->author_time;
1245 icommit->author_gmtoff = commit->author_gmtoff;
1246 icommit->committer_len = committer_len;
1247 icommit->committer_time = commit->committer_time;
1248 icommit->committer_gmtoff = commit->committer_gmtoff;
1249 icommit->logmsg_len = logmsg_len;
1250 icommit->nparents = commit->nparents;
1251
1252 len = sizeof(*icommit);
1253 memcpy(buf + len, commit->author, author_len);
1254 len += author_len;
1255 memcpy(buf + len, commit->committer, committer_len);
1256 len += committer_len;
1257 STAILQ_FOREACH(qid, &commit->parent_ids, entry) {
1258 memcpy(buf + len, &qid->id, sizeof(qid->id));
1259 len += sizeof(qid->id);
1260 }
1261
1262 if (imsg_compose(ibuf, GOT_IMSG_COMMIT, 0, 0, -1, buf, len) == -1) {
1263 err = got_error_from_errno("imsg_compose COMMIT");
1264 goto done;
1265 }
1266
1267 if (logmsg_len == 0 ||
1268 logmsg_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
1269 err = flush_imsg(ibuf);
1270 if (err)
1271 goto done;
1272 }
1273 err = send_commit_logmsg(ibuf, commit, logmsg_len);
1274 done:
1275 free(buf);
1276 return err;
1277 }
1278
1279 static const struct got_error *
1280 get_commit_from_imsg(struct got_commit_object **commit,
1281 struct imsg *imsg, size_t datalen, struct imsgbuf *ibuf)
1282 {
1283 const struct got_error *err = NULL;
1284 struct got_imsg_commit_object *icommit;
1285 size_t len = 0;
1286 int i;
1287
1288 if (datalen < sizeof(*icommit))
1289 return got_error(GOT_ERR_PRIVSEP_LEN);
1290
1291 icommit = imsg->data;
1292 if (datalen != sizeof(*icommit) + icommit->author_len +
1293 icommit->committer_len +
1294 icommit->nparents * sizeof(struct got_object_id))
1295 return got_error(GOT_ERR_PRIVSEP_LEN);
1296
1297 if (icommit->nparents < 0)
1298 return got_error(GOT_ERR_PRIVSEP_LEN);
1299
1300 len += sizeof(*icommit);
1301
1302 *commit = got_object_commit_alloc_partial();
1303 if (*commit == NULL)
1304 return got_error_from_errno(
1305 "got_object_commit_alloc_partial");
1306
1307 memcpy((*commit)->tree_id, &icommit->tree_id,
1308 sizeof(icommit->tree_id));
1309 (*commit)->author_time = icommit->author_time;
1310 (*commit)->author_gmtoff = icommit->author_gmtoff;
1311 (*commit)->committer_time = icommit->committer_time;
1312 (*commit)->committer_gmtoff = icommit->committer_gmtoff;
1313
1314 (*commit)->author = strndup(imsg->data + len, icommit->author_len);
1315 if ((*commit)->author == NULL) {
1316 err = got_error_from_errno("strndup");
1317 goto done;
1318 }
1319 len += icommit->author_len;
1320
1321 (*commit)->committer = strndup(imsg->data + len,
1322 icommit->committer_len);
1323 if ((*commit)->committer == NULL) {
1324 err = got_error_from_errno("strndup");
1325 goto done;
1326 }
1327 len += icommit->committer_len;
1328
1329 if (icommit->logmsg_len == 0) {
1330 (*commit)->logmsg = strdup("");
1331 if ((*commit)->logmsg == NULL) {
1332 err = got_error_from_errno("strdup");
1333 goto done;
1334 }
1335 } else {
1336 size_t offset = 0, remain = icommit->logmsg_len;
1337
1338 (*commit)->logmsg = malloc(icommit->logmsg_len + 1);
1339 if ((*commit)->logmsg == NULL) {
1340 err = got_error_from_errno("malloc");
1341 goto done;
1342 }
1343 while (remain > 0) {
1344 struct imsg imsg_log;
1345 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,
1346 remain);
1347
1348 err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
1349 if (err)
1350 goto done;
1351
1352 if (imsg_log.hdr.type != GOT_IMSG_COMMIT_LOGMSG) {
1353 err = got_error(GOT_ERR_PRIVSEP_MSG);
1354 goto done;
1355 }
1356
1357 memcpy((*commit)->logmsg + offset,
1358 imsg_log.data, n);
1359 imsg_free(&imsg_log);
1360 offset += n;
1361 remain -= n;
1362 }
1363 (*commit)->logmsg[icommit->logmsg_len] = '\0';
1364 }
1365
1366 for (i = 0; i < icommit->nparents; i++) {
1367 struct got_object_qid *qid;
1368
1369 err = got_object_qid_alloc_partial(&qid);
1370 if (err)
1371 break;
1372 memcpy(&qid->id, imsg->data + len +
1373 i * sizeof(qid->id), sizeof(qid->id));
1374 STAILQ_INSERT_TAIL(&(*commit)->parent_ids, qid, entry);
1375 (*commit)->nparents++;
1376 }
1377 done:
1378 if (err) {
1379 got_object_commit_close(*commit);
1380 *commit = NULL;
1381 }
1382 return err;
1383 }
1384
1385 const struct got_error *
1386 got_privsep_recv_commit(struct got_commit_object **commit, struct imsgbuf *ibuf)
1387 {
1388 const struct got_error *err = NULL;
1389 struct imsg imsg;
1390 size_t datalen;
1391 const size_t min_datalen =
1392 MIN(sizeof(struct got_imsg_error),
1393 sizeof(struct got_imsg_commit_object));
1394
1395 *commit = NULL;
1396
1397 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1398 if (err)
1399 return err;
1400
1401 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1402
1403 switch (imsg.hdr.type) {
1404 case GOT_IMSG_COMMIT:
1405 err = get_commit_from_imsg(commit, &imsg, datalen, ibuf);
1406 break;
1407 default:
1408 err = got_error(GOT_ERR_PRIVSEP_MSG);
1409 break;
1410 }
1411
1412 imsg_free(&imsg);
1413
1414 return err;
1415 }
1416
1417 static const struct got_error *
1418 send_tree_entries_batch(struct imsgbuf *ibuf,
1419 struct got_parsed_tree_entry *entries, int idx0, int idxN, size_t len)
1420 {
1421 struct ibuf *wbuf;
1422 struct got_imsg_tree_entries ientries;
1423 int i;
1424
1425 memset(&ientries, 0, sizeof(ientries));
1426
1427 wbuf = imsg_create(ibuf, GOT_IMSG_TREE_ENTRIES, 0, 0, len);
1428 if (wbuf == NULL)
1429 return got_error_from_errno("imsg_create TREE_ENTRY");
1430
1431 ientries.nentries = idxN - idx0 + 1;
1432 if (imsg_add(wbuf, &ientries, sizeof(ientries)) == -1)
1433 return got_error_from_errno("imsg_add TREE_ENTRY");
1434
1435 for (i = idx0; i <= idxN; i++) {
1436 struct got_parsed_tree_entry *pte = &entries[i];
1437
1438 /* Keep in sync with struct got_imsg_tree_entry definition! */
1439 if (imsg_add(wbuf, pte->id, SHA1_DIGEST_LENGTH) == -1)
1440 return got_error_from_errno("imsg_add TREE_ENTRY");
1441 if (imsg_add(wbuf, &pte->mode, sizeof(pte->mode)) == -1)
1442 return got_error_from_errno("imsg_add TREE_ENTRY");
1443 if (imsg_add(wbuf, &pte->namelen, sizeof(pte->namelen)) == -1)
1444 return got_error_from_errno("imsg_add TREE_ENTRY");
1445
1446 /* Remaining bytes are the entry's name. */
1447 if (imsg_add(wbuf, pte->name, pte->namelen) == -1)
1448 return got_error_from_errno("imsg_add TREE_ENTRY");
1449 }
1450
1451 wbuf->fd = -1;
1452 imsg_close(ibuf, wbuf);
1453 return NULL;
1454 }
1455
1456 static const struct got_error *
1457 send_tree_entries(struct imsgbuf *ibuf, struct got_parsed_tree_entry *entries,
1458 int nentries)
1459 {
1460 const struct got_error *err = NULL;
1461 int i, j;
1462 size_t entries_len = sizeof(struct got_imsg_tree_entries);
1463
1464 i = 0;
1465 for (j = 0; j < nentries; j++) {
1466 struct got_parsed_tree_entry *pte = &entries[j];
1467 size_t len = sizeof(struct got_imsg_tree_entry) + pte->namelen;
1468
1469 if (j > 0 &&
1470 entries_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
1471 err = send_tree_entries_batch(ibuf, entries,
1472 i, j - 1, entries_len);
1473 if (err)
1474 return err;
1475 i = j;
1476 entries_len = sizeof(struct got_imsg_tree_entries);
1477 }
1478
1479 entries_len += len;
1480 }
1481
1482 if (j > 0) {
1483 err = send_tree_entries_batch(ibuf, entries, i, j - 1,
1484 entries_len);
1485 if (err)
1486 return err;
1487 }
1488
1489 return NULL;
1490 }
1491
1492 const struct got_error *
1493 got_privsep_send_tree(struct imsgbuf *ibuf,
1494 struct got_parsed_tree_entry *entries, int nentries)
1495 {
1496 const struct got_error *err = NULL;
1497 struct got_imsg_tree_object itree;
1498
1499 memset(&itree, 0, sizeof(itree));
1500 itree.nentries = nentries;
1501 if (imsg_compose(ibuf, GOT_IMSG_TREE, 0, 0, -1, &itree, sizeof(itree))
1502 == -1)
1503 return got_error_from_errno("imsg_compose TREE");
1504
1505 err = send_tree_entries(ibuf, entries, nentries);
1506 if (err)
1507 return err;
1508
1509 return flush_imsg(ibuf);
1510 }
1511
1512
1513 static const struct got_error *
1514 recv_tree_entries(void *data, size_t datalen, struct got_tree_object *tree,
1515 int *nentries)
1516 {
1517 const struct got_error *err = NULL;
1518 struct got_imsg_tree_entries *ientries;
1519 struct got_tree_entry *te;
1520 size_t te_offset;
1521 size_t i;
1522
1523 if (datalen <= sizeof(*ientries) ||
1524 datalen > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
1525 return got_error(GOT_ERR_PRIVSEP_LEN);
1526
1527 ientries = (struct got_imsg_tree_entries *)data;
1528 if (ientries->nentries > INT_MAX) {
1529 return got_error_msg(GOT_ERR_NO_SPACE,
1530 "too many tree entries");
1531 }
1532
1533 te_offset = sizeof(*ientries);
1534 for (i = 0; i < ientries->nentries; i++) {
1535 struct got_imsg_tree_entry ite;
1536 const char *te_name;
1537 uint8_t *buf = (uint8_t *)data + te_offset;
1538
1539 if (te_offset >= datalen) {
1540 err = got_error(GOT_ERR_PRIVSEP_LEN);
1541 break;
1542 }
1543
1544 /* Might not be aligned, size is ~32 bytes. */
1545 memcpy(&ite, buf, sizeof(ite));
1546
1547 if (ite.namelen >= sizeof(te->name)) {
1548 err = got_error(GOT_ERR_PRIVSEP_LEN);
1549 break;
1550 }
1551 if (te_offset + sizeof(ite) + ite.namelen > datalen) {
1552 err = got_error(GOT_ERR_PRIVSEP_LEN);
1553 break;
1554 }
1555
1556 if (*nentries >= tree->nentries) {
1557 err = got_error(GOT_ERR_PRIVSEP_LEN);
1558 break;
1559 }
1560 te = &tree->entries[*nentries];
1561 te_name = buf + sizeof(ite);
1562 memcpy(te->name, te_name, ite.namelen);
1563 te->name[ite.namelen] = '\0';
1564 memcpy(te->id.sha1, ite.id, SHA1_DIGEST_LENGTH);
1565 te->mode = ite.mode;
1566 te->idx = *nentries;
1567 (*nentries)++;
1568
1569 te_offset += sizeof(ite) + ite.namelen;
1570 }
1571
1572 return err;
1573 }
1574
1575 const struct got_error *
1576 got_privsep_recv_tree(struct got_tree_object **tree, struct imsgbuf *ibuf)
1577 {
1578 const struct got_error *err = NULL;
1579 const size_t min_datalen =
1580 MIN(sizeof(struct got_imsg_error),
1581 sizeof(struct got_imsg_tree_object));
1582 struct got_imsg_tree_object *itree;
1583 int nentries = 0;
1584
1585 *tree = NULL;
1586
1587 while (*tree == NULL || nentries < (*tree)->nentries) {
1588 struct imsg imsg;
1589 size_t datalen;
1590
1591 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1592 if (err)
1593 break;
1594
1595 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1596
1597 switch (imsg.hdr.type) {
1598 case GOT_IMSG_TREE:
1599 /* This message should only appear once. */
1600 if (*tree != NULL) {
1601 err = got_error(GOT_ERR_PRIVSEP_MSG);
1602 break;
1603 }
1604 if (datalen != sizeof(*itree)) {
1605 err = got_error(GOT_ERR_PRIVSEP_LEN);
1606 break;
1607 }
1608 itree = imsg.data;
1609 if (itree->nentries < 0) {
1610 err = got_error(GOT_ERR_PRIVSEP_LEN);
1611 break;
1612 }
1613 *tree = malloc(sizeof(**tree));
1614 if (*tree == NULL) {
1615 err = got_error_from_errno("malloc");
1616 break;
1617 }
1618 (*tree)->entries = calloc(itree->nentries,
1619 sizeof(struct got_tree_entry));
1620 if ((*tree)->entries == NULL) {
1621 err = got_error_from_errno("malloc");
1622 free(*tree);
1623 *tree = NULL;
1624 break;
1625 }
1626 (*tree)->nentries = itree->nentries;
1627 (*tree)->refcnt = 0;
1628 break;
1629 case GOT_IMSG_TREE_ENTRIES:
1630 /* This message should be preceeded by GOT_IMSG_TREE. */
1631 if (*tree == NULL) {
1632 err = got_error(GOT_ERR_PRIVSEP_MSG);
1633 break;
1634 }
1635 err = recv_tree_entries(imsg.data, datalen,
1636 *tree, &nentries);
1637 break;
1638 default:
1639 err = got_error(GOT_ERR_PRIVSEP_MSG);
1640 break;
1641 }
1642
1643 imsg_free(&imsg);
1644 if (err)
1645 break;
1646 }
1647
1648 if (*tree && (*tree)->nentries != nentries) {
1649 if (err == NULL)
1650 err = got_error(GOT_ERR_PRIVSEP_LEN);
1651 got_object_tree_close(*tree);
1652 *tree = NULL;
1653 }
1654
1655 return err;
1656 }
1657
1658 const struct got_error *
1659 got_privsep_send_blob(struct imsgbuf *ibuf, size_t size, size_t hdrlen,
1660 const uint8_t *data)
1661 {
1662 struct got_imsg_blob iblob;
1663
1664 memset(&iblob, 0, sizeof(iblob));
1665 iblob.size = size;
1666 iblob.hdrlen = hdrlen;
1667
1668 if (data) {
1669 uint8_t *buf;
1670
1671 if (size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX)
1672 return got_error(GOT_ERR_NO_SPACE);
1673
1674 buf = malloc(sizeof(iblob) + size);
1675 if (buf == NULL)
1676 return got_error_from_errno("malloc");
1677
1678 memcpy(buf, &iblob, sizeof(iblob));
1679 memcpy(buf + sizeof(iblob), data, size);
1680 if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, buf,
1681 sizeof(iblob) + size) == -1) {
1682 free(buf);
1683 return got_error_from_errno("imsg_compose BLOB");
1684 }
1685 free(buf);
1686 } else {
1687 /* Data has already been written to file descriptor. */
1688 if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, &iblob,
1689 sizeof(iblob)) == -1)
1690 return got_error_from_errno("imsg_compose BLOB");
1691 }
1692
1693
1694 return flush_imsg(ibuf);
1695 }
1696
1697 const struct got_error *
1698 got_privsep_recv_blob(uint8_t **outbuf, size_t *size, size_t *hdrlen,
1699 struct imsgbuf *ibuf)
1700 {
1701 const struct got_error *err = NULL;
1702 struct imsg imsg;
1703 struct got_imsg_blob *iblob;
1704 size_t datalen;
1705
1706 *outbuf = NULL;
1707
1708 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1709 if (err)
1710 return err;
1711
1712 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1713
1714 switch (imsg.hdr.type) {
1715 case GOT_IMSG_BLOB:
1716 if (datalen < sizeof(*iblob)) {
1717 err = got_error(GOT_ERR_PRIVSEP_LEN);
1718 break;
1719 }
1720 iblob = imsg.data;
1721 *size = iblob->size;
1722 *hdrlen = iblob->hdrlen;
1723
1724 if (datalen == sizeof(*iblob)) {
1725 /* Data has been written to file descriptor. */
1726 break;
1727 }
1728
1729 if (*size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX ||
1730 *size > datalen + sizeof(*iblob)) {
1731 err = got_error(GOT_ERR_PRIVSEP_LEN);
1732 break;
1733 }
1734
1735 *outbuf = malloc(*size);
1736 if (*outbuf == NULL) {
1737 err = got_error_from_errno("malloc");
1738 break;
1739 }
1740 memcpy(*outbuf, imsg.data + sizeof(*iblob), *size);
1741 break;
1742 default:
1743 err = got_error(GOT_ERR_PRIVSEP_MSG);
1744 break;
1745 }
1746
1747 imsg_free(&imsg);
1748
1749 return err;
1750 }
1751
1752 static const struct got_error *
1753 send_tagmsg(struct imsgbuf *ibuf, struct got_tag_object *tag, size_t tagmsg_len)
1754 {
1755 const struct got_error *err = NULL;
1756 size_t offset, remain;
1757
1758 offset = 0;
1759 remain = tagmsg_len;
1760 while (remain > 0) {
1761 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain);
1762
1763 if (imsg_compose(ibuf, GOT_IMSG_TAG_TAGMSG, 0, 0, -1,
1764 tag->tagmsg + offset, n) == -1) {
1765 err = got_error_from_errno("imsg_compose TAG_TAGMSG");
1766 break;
1767 }
1768
1769 err = flush_imsg(ibuf);
1770 if (err)
1771 break;
1772
1773 offset += n;
1774 remain -= n;
1775 }
1776
1777 return err;
1778 }
1779
1780 const struct got_error *
1781 got_privsep_send_tag(struct imsgbuf *ibuf, struct got_tag_object *tag)
1782 {
1783 const struct got_error *err = NULL;
1784 struct got_imsg_tag_object *itag;
1785 uint8_t *buf;
1786 size_t len, total;
1787 size_t tag_len = strlen(tag->tag);
1788 size_t tagger_len = strlen(tag->tagger);
1789 size_t tagmsg_len = strlen(tag->tagmsg);
1790
1791 total = sizeof(*itag) + tag_len + tagger_len + tagmsg_len;
1792
1793 buf = malloc(total);
1794 if (buf == NULL)
1795 return got_error_from_errno("malloc");
1796
1797 itag = (struct got_imsg_tag_object *)buf;
1798 memcpy(&itag->id, &tag->id, sizeof(itag->id));
1799 itag->obj_type = tag->obj_type;
1800 itag->tag_len = tag_len;
1801 itag->tagger_len = tagger_len;
1802 itag->tagger_time = tag->tagger_time;
1803 itag->tagger_gmtoff = tag->tagger_gmtoff;
1804 itag->tagmsg_len = tagmsg_len;
1805
1806 len = sizeof(*itag);
1807 memcpy(buf + len, tag->tag, tag_len);
1808 len += tag_len;
1809 memcpy(buf + len, tag->tagger, tagger_len);
1810 len += tagger_len;
1811
1812 if (imsg_compose(ibuf, GOT_IMSG_TAG, 0, 0, -1, buf, len) == -1) {
1813 err = got_error_from_errno("imsg_compose TAG");
1814 goto done;
1815 }
1816
1817 if (tagmsg_len == 0 ||
1818 tagmsg_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
1819 err = flush_imsg(ibuf);
1820 if (err)
1821 goto done;
1822 }
1823 err = send_tagmsg(ibuf, tag, tagmsg_len);
1824 done:
1825 free(buf);
1826 return err;
1827 }
1828
1829 const struct got_error *
1830 got_privsep_recv_tag(struct got_tag_object **tag, struct imsgbuf *ibuf)
1831 {
1832 const struct got_error *err = NULL;
1833 struct imsg imsg;
1834 struct got_imsg_tag_object *itag;
1835 size_t len, datalen;
1836 const size_t min_datalen =
1837 MIN(sizeof(struct got_imsg_error),
1838 sizeof(struct got_imsg_tag_object));
1839
1840 *tag = NULL;
1841
1842 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1843 if (err)
1844 return err;
1845
1846 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1847 len = 0;
1848
1849 switch (imsg.hdr.type) {
1850 case GOT_IMSG_TAG:
1851 if (datalen < sizeof(*itag)) {
1852 err = got_error(GOT_ERR_PRIVSEP_LEN);
1853 break;
1854 }
1855 itag = imsg.data;
1856 if (datalen != sizeof(*itag) + itag->tag_len +
1857 itag->tagger_len) {
1858 err = got_error(GOT_ERR_PRIVSEP_LEN);
1859 break;
1860 }
1861 len += sizeof(*itag);
1862
1863 *tag = calloc(1, sizeof(**tag));
1864 if (*tag == NULL) {
1865 err = got_error_from_errno("calloc");
1866 break;
1867 }
1868
1869 memcpy(&(*tag)->id, &itag->id, sizeof(itag->id));
1870
1871 (*tag)->tag = strndup(imsg.data + len, itag->tag_len);
1872 if ((*tag)->tag == NULL) {
1873 err = got_error_from_errno("strndup");
1874 break;
1875 }
1876 len += itag->tag_len;
1877
1878 (*tag)->obj_type = itag->obj_type;
1879 (*tag)->tagger_time = itag->tagger_time;
1880 (*tag)->tagger_gmtoff = itag->tagger_gmtoff;
1881
1882 (*tag)->tagger = strndup(imsg.data + len, itag->tagger_len);
1883 if ((*tag)->tagger == NULL) {
1884 err = got_error_from_errno("strndup");
1885 break;
1886 }
1887 len += itag->tagger_len;
1888
1889 if (itag->tagmsg_len == 0) {
1890 (*tag)->tagmsg = strdup("");
1891 if ((*tag)->tagmsg == NULL) {
1892 err = got_error_from_errno("strdup");
1893 break;
1894 }
1895 } else {
1896 size_t offset = 0, remain = itag->tagmsg_len;
1897
1898 (*tag)->tagmsg = malloc(itag->tagmsg_len + 1);
1899 if ((*tag)->tagmsg == NULL) {
1900 err = got_error_from_errno("malloc");
1901 break;
1902 }
1903 while (remain > 0) {
1904 struct imsg imsg_log;
1905 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,
1906 remain);
1907
1908 err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
1909 if (err)
1910 return err;
1911
1912 if (imsg_log.hdr.type != GOT_IMSG_TAG_TAGMSG)
1913 return got_error(GOT_ERR_PRIVSEP_MSG);
1914
1915 memcpy((*tag)->tagmsg + offset, imsg_log.data,
1916 n);
1917 imsg_free(&imsg_log);
1918 offset += n;
1919 remain -= n;
1920 }
1921 (*tag)->tagmsg[itag->tagmsg_len] = '\0';
1922 }
1923
1924 break;
1925 default:
1926 err = got_error(GOT_ERR_PRIVSEP_MSG);
1927 break;
1928 }
1929
1930 imsg_free(&imsg);
1931
1932 return err;
1933 }
1934
1935 const struct got_error *
1936 got_privsep_init_pack_child(struct imsgbuf *ibuf, struct got_pack *pack,
1937 struct got_packidx *packidx)
1938 {
1939 const struct got_error *err = NULL;
1940 struct got_imsg_packidx ipackidx;
1941 struct got_imsg_pack ipack;
1942 int fd;
1943
1944 memset(&ipackidx, 0, sizeof(ipackidx));
1945 memset(&ipack, 0, sizeof(ipack));
1946
1947 ipackidx.len = packidx->len;
1948 ipackidx.packfile_size = pack->filesize;
1949 fd = dup(packidx->fd);
1950 if (fd == -1)
1951 return got_error_from_errno("dup");
1952
1953 if (imsg_compose(ibuf, GOT_IMSG_PACKIDX, 0, 0, fd, &ipackidx,
1954 sizeof(ipackidx)) == -1) {
1955 err = got_error_from_errno("imsg_compose PACKIDX");
1956 close(fd);
1957 return err;
1958 }
1959
1960 if (strlcpy(ipack.path_packfile, pack->path_packfile,
1961 sizeof(ipack.path_packfile)) >= sizeof(ipack.path_packfile))
1962 return got_error(GOT_ERR_NO_SPACE);
1963 ipack.filesize = pack->filesize;
1964
1965 fd = dup(pack->fd);
1966 if (fd == -1)
1967 return got_error_from_errno("dup");
1968
1969 if (imsg_compose(ibuf, GOT_IMSG_PACK, 0, 0, fd, &ipack, sizeof(ipack))
1970 == -1) {
1971 err = got_error_from_errno("imsg_compose PACK");
1972 close(fd);
1973 return err;
1974 }
1975
1976 return flush_imsg(ibuf);
1977 }
1978
1979 const struct got_error *
1980 got_privsep_send_packed_obj_req(struct imsgbuf *ibuf, int idx,
1981 struct got_object_id *id)
1982 {
1983 struct got_imsg_packed_object iobj;
1984
1985 memset(&iobj, 0, sizeof(iobj));
1986 iobj.idx = idx;
1987 memcpy(&iobj.id, id, sizeof(iobj.id));
1988
1989 if (imsg_compose(ibuf, GOT_IMSG_PACKED_OBJECT_REQUEST, 0, 0, -1,
1990 &iobj, sizeof(iobj)) == -1)
1991 return got_error_from_errno("imsg_compose "
1992 "PACKED_OBJECT_REQUEST");
1993
1994 return flush_imsg(ibuf);
1995 }
1996
1997 const struct got_error *
1998 got_privsep_send_packed_raw_obj_req(struct imsgbuf *ibuf, int idx,
1999 struct got_object_id *id)
2000 {
2001 struct got_imsg_packed_object iobj;
2002
2003 memset(&iobj, 0, sizeof(iobj));
2004 iobj.idx = idx;
2005 memcpy(&iobj.id, id, sizeof(iobj.id));
2006
2007 if (imsg_compose(ibuf, GOT_IMSG_PACKED_RAW_OBJECT_REQUEST, 0, 0, -1,
2008 &iobj, sizeof(iobj)) == -1)
2009 return got_error_from_errno("imsg_compose "
2010 "PACKED_OBJECT_REQUEST");
2011
2012 return flush_imsg(ibuf);
2013 }
2014
2015 const struct got_error *
2016 got_privsep_send_gitconfig_parse_req(struct imsgbuf *ibuf, int fd)
2017 {
2018 const struct got_error *err = NULL;
2019
2020 if (imsg_compose(ibuf, GOT_IMSG_GITCONFIG_PARSE_REQUEST, 0, 0, fd,
2021 NULL, 0) == -1) {
2022 err = got_error_from_errno("imsg_compose "
2023 "GITCONFIG_PARSE_REQUEST");
2024 close(fd);
2025 return err;
2026 }
2027
2028 return flush_imsg(ibuf);
2029 }
2030
2031 const struct got_error *
2032 got_privsep_send_gitconfig_repository_format_version_req(struct imsgbuf *ibuf)
2033 {
2034 if (imsg_compose(ibuf,
2035 GOT_IMSG_GITCONFIG_REPOSITORY_FORMAT_VERSION_REQUEST, 0, 0, -1,
2036 NULL, 0) == -1)
2037 return got_error_from_errno("imsg_compose "
2038 "GITCONFIG_REPOSITORY_FORMAT_VERSION_REQUEST");
2039
2040 return flush_imsg(ibuf);
2041 }
2042
2043 const struct got_error *
2044 got_privsep_send_gitconfig_repository_extensions_req(struct imsgbuf *ibuf)
2045 {
2046 if (imsg_compose(ibuf,
2047 GOT_IMSG_GITCONFIG_REPOSITORY_EXTENSIONS_REQUEST, 0, 0, -1,
2048 NULL, 0) == -1)
2049 return got_error_from_errno("imsg_compose "
2050 "GITCONFIG_REPOSITORY_EXTENSIONS_REQUEST");
2051
2052 return flush_imsg(ibuf);
2053 }
2054
2055
2056 const struct got_error *
2057 got_privsep_send_gitconfig_author_name_req(struct imsgbuf *ibuf)
2058 {
2059 if (imsg_compose(ibuf,
2060 GOT_IMSG_GITCONFIG_AUTHOR_NAME_REQUEST, 0, 0, -1, NULL, 0) == -1)
2061 return got_error_from_errno("imsg_compose "
2062 "GITCONFIG_AUTHOR_NAME_REQUEST");
2063
2064 return flush_imsg(ibuf);
2065 }
2066
2067 const struct got_error *
2068 got_privsep_send_gitconfig_author_email_req(struct imsgbuf *ibuf)
2069 {
2070 if (imsg_compose(ibuf,
2071 GOT_IMSG_GITCONFIG_AUTHOR_EMAIL_REQUEST, 0, 0, -1, NULL, 0) == -1)
2072 return got_error_from_errno("imsg_compose "
2073 "GITCONFIG_AUTHOR_EMAIL_REQUEST");
2074
2075 return flush_imsg(ibuf);
2076 }
2077
2078 const struct got_error *
2079 got_privsep_send_gitconfig_remotes_req(struct imsgbuf *ibuf)
2080 {
2081 if (imsg_compose(ibuf,
2082 GOT_IMSG_GITCONFIG_REMOTES_REQUEST, 0, 0, -1, NULL, 0) == -1)
2083 return got_error_from_errno("imsg_compose "
2084 "GITCONFIG_REMOTE_REQUEST");
2085
2086 return flush_imsg(ibuf);
2087 }
2088
2089 const struct got_error *
2090 got_privsep_send_gitconfig_owner_req(struct imsgbuf *ibuf)
2091 {
2092 if (imsg_compose(ibuf,
2093 GOT_IMSG_GITCONFIG_OWNER_REQUEST, 0, 0, -1, NULL, 0) == -1)
2094 return got_error_from_errno("imsg_compose "
2095 "GITCONFIG_OWNER_REQUEST");
2096
2097 return flush_imsg(ibuf);
2098 }
2099
2100 const struct got_error *
2101 got_privsep_recv_gitconfig_str(char **str, struct imsgbuf *ibuf)
2102 {
2103 const struct got_error *err = NULL;
2104 struct imsg imsg;
2105 size_t datalen;
2106
2107 *str = NULL;
2108
2109 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
2110 if (err)
2111 return err;
2112 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2113
2114 switch (imsg.hdr.type) {
2115 case GOT_IMSG_GITCONFIG_STR_VAL:
2116 if (datalen == 0)
2117 break;
2118 *str = strndup(imsg.data, datalen);
2119 if (*str == NULL) {
2120 err = got_error_from_errno("strndup");
2121 break;
2122 }
2123 break;
2124 default:
2125 err = got_error(GOT_ERR_PRIVSEP_MSG);
2126 break;
2127 }
2128
2129 imsg_free(&imsg);
2130 return err;
2131 }
2132
2133 const struct got_error *
2134 got_privsep_recv_gitconfig_pair(char **key, char **val, struct imsgbuf *ibuf)
2135 {
2136 const struct got_error *err = NULL;
2137 struct got_imsg_gitconfig_pair p;
2138 struct imsg imsg;
2139 size_t datalen;
2140 uint8_t *data;
2141
2142 *key = *val = NULL;
2143
2144 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
2145 if (err)
2146 return err;
2147
2148 data = imsg.data;
2149 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2150
2151 if (imsg.hdr.type != GOT_IMSG_GITCONFIG_PAIR) {
2152 err = got_error(GOT_ERR_PRIVSEP_MSG);
2153 goto done;
2154 }
2155
2156 if (datalen < sizeof(p)) {
2157 err = got_error(GOT_ERR_PRIVSEP_LEN);
2158 goto done;
2159 }
2160
2161 memcpy(&p, data, sizeof(p));
2162 data += sizeof(p);
2163
2164 if (datalen != sizeof(p) + p.klen + p.vlen) {
2165 err = got_error(GOT_ERR_PRIVSEP_LEN);
2166 goto done;
2167 }
2168
2169 *key = strndup(data, p.klen);
2170 if (*key == NULL) {
2171 err = got_error_from_errno("strndup");
2172 goto done;
2173 }
2174 data += p.klen;
2175
2176 *val = strndup(data, p.vlen);
2177 if (*val == NULL) {
2178 err = got_error_from_errno("strndup");
2179 goto done;
2180 }
2181
2182 done:
2183 imsg_free(&imsg);
2184 return err;
2185 }
2186
2187 const struct got_error *
2188 got_privsep_recv_gitconfig_int(int *val, struct imsgbuf *ibuf)
2189 {
2190 const struct got_error *err = NULL;
2191 struct imsg imsg;
2192 size_t datalen;
2193 const size_t min_datalen =
2194 MIN(sizeof(struct got_imsg_error), sizeof(int));
2195
2196 *val = 0;
2197
2198 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2199 if (err)
2200 return err;
2201 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2202
2203 switch (imsg.hdr.type) {
2204 case GOT_IMSG_GITCONFIG_INT_VAL:
2205 if (datalen != sizeof(*val)) {
2206 err = got_error(GOT_ERR_PRIVSEP_LEN);
2207 break;
2208 }
2209 memcpy(val, imsg.data, sizeof(*val));
2210 break;
2211 default:
2212 err = got_error(GOT_ERR_PRIVSEP_MSG);
2213 break;
2214 }
2215
2216 imsg_free(&imsg);
2217 return err;
2218 }
2219
2220 static void
2221 free_remote_data(struct got_remote_repo *remote)
2222 {
2223 int i;
2224
2225 free(remote->name);
2226 free(remote->fetch_url);
2227 free(remote->send_url);
2228 for (i = 0; i < remote->nfetch_branches; i++)
2229 free(remote->fetch_branches[i]);
2230 free(remote->fetch_branches);
2231 for (i = 0; i < remote->nsend_branches; i++)
2232 free(remote->send_branches[i]);
2233 free(remote->send_branches);
2234 for (i = 0; i < remote->nfetch_refs; i++)
2235 free(remote->fetch_refs[i]);
2236 free(remote->fetch_refs);
2237 }
2238
2239 const struct got_error *
2240 got_privsep_recv_gitconfig_remotes(struct got_remote_repo **remotes,
2241 int *nremotes, struct imsgbuf *ibuf)
2242 {
2243 const struct got_error *err = NULL;
2244 struct imsg imsg;
2245 size_t datalen;
2246 struct got_imsg_remotes iremotes;
2247 struct got_imsg_remote iremote;
2248
2249 *remotes = NULL;
2250 *nremotes = 0;
2251 iremotes.nremotes = 0;
2252
2253 err = got_privsep_recv_imsg(&imsg, ibuf, sizeof(iremotes));
2254 if (err)
2255 return err;
2256 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2257
2258 switch (imsg.hdr.type) {
2259 case GOT_IMSG_GITCONFIG_REMOTES:
2260 if (datalen != sizeof(iremotes)) {
2261 err = got_error(GOT_ERR_PRIVSEP_LEN);
2262 break;
2263 }
2264 memcpy(&iremotes, imsg.data, sizeof(iremotes));
2265 if (iremotes.nremotes == 0) {
2266 imsg_free(&imsg);
2267 return NULL;
2268 }
2269 break;
2270 default:
2271 imsg_free(&imsg);
2272 return got_error(GOT_ERR_PRIVSEP_MSG);
2273 }
2274
2275 imsg_free(&imsg);
2276
2277 *remotes = recallocarray(NULL, 0, iremotes.nremotes, sizeof(**remotes));
2278 if (*remotes == NULL)
2279 return got_error_from_errno("recallocarray");
2280
2281 while (*nremotes < iremotes.nremotes) {
2282 struct got_remote_repo *remote;
2283
2284 err = got_privsep_recv_imsg(&imsg, ibuf, sizeof(iremote));
2285 if (err)
2286 break;
2287 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2288
2289 switch (imsg.hdr.type) {
2290 case GOT_IMSG_GITCONFIG_REMOTE:
2291 remote = &(*remotes)[*nremotes];
2292 memset(remote, 0, sizeof(*remote));
2293 if (datalen < sizeof(iremote)) {
2294 err = got_error(GOT_ERR_PRIVSEP_LEN);
2295 break;
2296 }
2297 memcpy(&iremote, imsg.data, sizeof(iremote));
2298 if (iremote.name_len == 0 ||
2299 iremote.fetch_url_len == 0 ||
2300 iremote.send_url_len == 0 ||
2301 (sizeof(iremote) + iremote.name_len +
2302 iremote.fetch_url_len + iremote.send_url_len) > datalen) {
2303 err = got_error(GOT_ERR_PRIVSEP_LEN);
2304 break;
2305 }
2306 remote->name = strndup(imsg.data + sizeof(iremote),
2307 iremote.name_len);
2308 if (remote->name == NULL) {
2309 err = got_error_from_errno("strndup");
2310 break;
2311 }
2312 remote->fetch_url = strndup(imsg.data + sizeof(iremote) +
2313 iremote.name_len, iremote.fetch_url_len);
2314 if (remote->fetch_url == NULL) {
2315 err = got_error_from_errno("strndup");
2316 free_remote_data(remote);
2317 break;
2318 }
2319 remote->send_url = strndup(imsg.data + sizeof(iremote) +
2320 iremote.name_len + iremote.fetch_url_len,
2321 iremote.send_url_len);
2322 if (remote->send_url == NULL) {
2323 err = got_error_from_errno("strndup");
2324 free_remote_data(remote);
2325 break;
2326 }
2327 remote->mirror_references = iremote.mirror_references;
2328 remote->fetch_all_branches = iremote.fetch_all_branches;
2329 remote->nfetch_branches = 0;
2330 remote->fetch_branches = NULL;
2331 remote->nsend_branches = 0;
2332 remote->send_branches = NULL;
2333 remote->nfetch_refs = 0;
2334 remote->fetch_refs = NULL;
2335 (*nremotes)++;
2336 break;
2337 default:
2338 err = got_error(GOT_ERR_PRIVSEP_MSG);
2339 break;
2340 }
2341
2342 imsg_free(&imsg);
2343 if (err)
2344 break;
2345 }
2346
2347 if (err) {
2348 int i;
2349 for (i = 0; i < *nremotes; i++)
2350 free_remote_data(&(*remotes)[i]);
2351 free(*remotes);
2352 *remotes = NULL;
2353 *nremotes = 0;
2354 }
2355 return err;
2356 }
2357
2358 const struct got_error *
2359 got_privsep_send_gotconfig_parse_req(struct imsgbuf *ibuf, int fd)
2360 {
2361 const struct got_error *err = NULL;
2362
2363 if (imsg_compose(ibuf, GOT_IMSG_GOTCONFIG_PARSE_REQUEST, 0, 0, fd,
2364 NULL, 0) == -1) {
2365 err = got_error_from_errno("imsg_compose "
2366 "GOTCONFIG_PARSE_REQUEST");
2367 close(fd);
2368 return err;
2369 }
2370
2371 return flush_imsg(ibuf);
2372 }
2373
2374 const struct got_error *
2375 got_privsep_send_gotconfig_author_req(struct imsgbuf *ibuf)
2376 {
2377 if (imsg_compose(ibuf,
2378 GOT_IMSG_GOTCONFIG_AUTHOR_REQUEST, 0, 0, -1, NULL, 0) == -1)
2379 return got_error_from_errno("imsg_compose "
2380 "GOTCONFIG_AUTHOR_REQUEST");
2381
2382 return flush_imsg(ibuf);
2383 }
2384
2385 const struct got_error *
2386 got_privsep_send_gotconfig_allowed_signers_req(struct imsgbuf *ibuf)
2387 {
2388 if (imsg_compose(ibuf,
2389 GOT_IMSG_GOTCONFIG_ALLOWEDSIGNERS_REQUEST, 0, 0, -1, NULL, 0) == -1)
2390 return got_error_from_errno("imsg_compose "
2391 "GOTCONFIG_ALLOWEDSIGNERS_REQUEST");
2392
2393 return flush_imsg(ibuf);
2394 }
2395
2396 const struct got_error *
2397 got_privsep_send_gotconfig_revoked_signers_req(struct imsgbuf *ibuf)
2398 {
2399 if (imsg_compose(ibuf,
2400 GOT_IMSG_GOTCONFIG_REVOKEDSIGNERS_REQUEST, 0, 0, -1, NULL, 0) == -1)
2401 return got_error_from_errno("imsg_compose "
2402 "GOTCONFIG_REVOKEDSIGNERS_REQUEST");
2403
2404 return flush_imsg(ibuf);
2405 }
2406
2407 const struct got_error *
2408 got_privsep_send_gotconfig_signer_id_req(struct imsgbuf *ibuf)
2409 {
2410 if (imsg_compose(ibuf,
2411 GOT_IMSG_GOTCONFIG_SIGNERID_REQUEST, 0, 0, -1, NULL, 0) == -1)
2412 return got_error_from_errno("imsg_compose "
2413 "GOTCONFIG_SIGNERID_REQUEST");
2414
2415 return flush_imsg(ibuf);
2416 }
2417
2418 const struct got_error *
2419 got_privsep_send_gotconfig_remotes_req(struct imsgbuf *ibuf)
2420 {
2421 if (imsg_compose(ibuf,
2422 GOT_IMSG_GOTCONFIG_REMOTES_REQUEST, 0, 0, -1, NULL, 0) == -1)
2423 return got_error_from_errno("imsg_compose "
2424 "GOTCONFIG_REMOTE_REQUEST");
2425
2426 return flush_imsg(ibuf);
2427 }
2428
2429 const struct got_error *
2430 got_privsep_recv_gotconfig_str(char **str, struct imsgbuf *ibuf)
2431 {
2432 const struct got_error *err = NULL;
2433 struct imsg imsg;
2434 size_t datalen;
2435
2436 *str = NULL;
2437
2438 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
2439 if (err)
2440 return err;
2441 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2442
2443 switch (imsg.hdr.type) {
2444 case GOT_IMSG_GOTCONFIG_STR_VAL:
2445 if (datalen == 0)
2446 break;
2447 *str = strndup(imsg.data, datalen);
2448 if (*str == NULL) {
2449 err = got_error_from_errno("strndup");
2450 break;
2451 }
2452 break;
2453 default:
2454 err = got_error(GOT_ERR_PRIVSEP_MSG);
2455 break;
2456 }
2457
2458 imsg_free(&imsg);
2459 return err;
2460 }
2461
2462 const struct got_error *
2463 got_privsep_recv_gotconfig_remotes(struct got_remote_repo **remotes,
2464 int *nremotes, struct imsgbuf *ibuf)
2465 {
2466 const struct got_error *err = NULL;
2467 struct imsg imsg;
2468 size_t datalen;
2469 struct got_imsg_remotes iremotes;
2470 struct got_imsg_remote iremote;
2471 const size_t min_datalen =
2472 MIN(sizeof(struct got_imsg_error), sizeof(iremotes));
2473
2474 *remotes = NULL;
2475 *nremotes = 0;
2476 iremotes.nremotes = 0;
2477
2478 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2479 if (err)
2480 return err;
2481 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2482
2483 switch (imsg.hdr.type) {
2484 case GOT_IMSG_GOTCONFIG_REMOTES:
2485 if (datalen != sizeof(iremotes)) {
2486 err = got_error(GOT_ERR_PRIVSEP_LEN);
2487 break;
2488 }
2489 memcpy(&iremotes, imsg.data, sizeof(iremotes));
2490 if (iremotes.nremotes < 0) {
2491 err = got_error(GOT_ERR_PRIVSEP_LEN);
2492 break;
2493 }
2494 if (iremotes.nremotes == 0) {
2495 imsg_free(&imsg);
2496 return NULL;
2497 }
2498 break;
2499 default:
2500 imsg_free(&imsg);
2501 return got_error(GOT_ERR_PRIVSEP_MSG);
2502 }
2503
2504 imsg_free(&imsg);
2505
2506 *remotes = recallocarray(NULL, 0, iremotes.nremotes, sizeof(**remotes));
2507 if (*remotes == NULL)
2508 return got_error_from_errno("recallocarray");
2509
2510 while (*nremotes < iremotes.nremotes) {
2511 struct got_remote_repo *remote;
2512 const size_t min_datalen =
2513 MIN(sizeof(struct got_imsg_error), sizeof(iremote));
2514 int i;
2515
2516 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2517 if (err)
2518 break;
2519 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2520
2521 switch (imsg.hdr.type) {
2522 case GOT_IMSG_GOTCONFIG_REMOTE:
2523 remote = &(*remotes)[*nremotes];
2524 memset(remote, 0, sizeof(*remote));
2525 if (datalen < sizeof(iremote)) {
2526 err = got_error(GOT_ERR_PRIVSEP_LEN);
2527 break;
2528 }
2529 memcpy(&iremote, imsg.data, sizeof(iremote));
2530 if (iremote.name_len == 0 ||
2531 (iremote.fetch_url_len == 0 &&
2532 iremote.send_url_len == 0) ||
2533 (sizeof(iremote) + iremote.name_len +
2534 iremote.fetch_url_len + iremote.send_url_len) >
2535 datalen) {
2536 err = got_error(GOT_ERR_PRIVSEP_LEN);
2537 break;
2538 }
2539 remote->name = strndup(imsg.data + sizeof(iremote),
2540 iremote.name_len);
2541 if (remote->name == NULL) {
2542 err = got_error_from_errno("strndup");
2543 break;
2544 }
2545 remote->fetch_url = strndup(imsg.data +
2546 sizeof(iremote) + iremote.name_len,
2547 iremote.fetch_url_len);
2548 if (remote->fetch_url == NULL) {
2549 err = got_error_from_errno("strndup");
2550 free_remote_data(remote);
2551 break;
2552 }
2553 remote->send_url = strndup(imsg.data +
2554 sizeof(iremote) + iremote.name_len +
2555 iremote.fetch_url_len, iremote.send_url_len);
2556 if (remote->send_url == NULL) {
2557 err = got_error_from_errno("strndup");
2558 free_remote_data(remote);
2559 break;
2560 }
2561 remote->mirror_references = iremote.mirror_references;
2562 remote->fetch_all_branches = iremote.fetch_all_branches;
2563 if (iremote.nfetch_branches > 0) {
2564 remote->fetch_branches = recallocarray(NULL, 0,
2565 iremote.nfetch_branches, sizeof(char *));
2566 if (remote->fetch_branches == NULL) {
2567 err = got_error_from_errno("calloc");
2568 free_remote_data(remote);
2569 break;
2570 }
2571 }
2572 remote->nfetch_branches = 0;
2573 for (i = 0; i < iremote.nfetch_branches; i++) {
2574 char *branch;
2575 err = got_privsep_recv_gotconfig_str(&branch,
2576 ibuf);
2577 if (err) {
2578 free_remote_data(remote);
2579 goto done;
2580 }
2581 remote->fetch_branches[i] = branch;
2582 remote->nfetch_branches++;
2583 }
2584 if (iremote.nsend_branches > 0) {
2585 remote->send_branches = recallocarray(NULL, 0,
2586 iremote.nsend_branches, sizeof(char *));
2587 if (remote->send_branches == NULL) {
2588 err = got_error_from_errno("calloc");
2589 free_remote_data(remote);
2590 break;
2591 }
2592 }
2593 remote->nsend_branches = 0;
2594 for (i = 0; i < iremote.nsend_branches; i++) {
2595 char *branch;
2596 err = got_privsep_recv_gotconfig_str(&branch,
2597 ibuf);
2598 if (err) {
2599 free_remote_data(remote);
2600 goto done;
2601 }
2602 remote->send_branches[i] = branch;
2603 remote->nsend_branches++;
2604 }
2605 if (iremote.nfetch_refs > 0) {
2606 remote->fetch_refs = recallocarray(NULL, 0,
2607 iremote.nfetch_refs, sizeof(char *));
2608 if (remote->fetch_refs == NULL) {
2609 err = got_error_from_errno("calloc");
2610 free_remote_data(remote);
2611 break;
2612 }
2613 }
2614 remote->nfetch_refs = 0;
2615 for (i = 0; i < iremote.nfetch_refs; i++) {
2616 char *ref;
2617 err = got_privsep_recv_gotconfig_str(&ref,
2618 ibuf);
2619 if (err) {
2620 free_remote_data(remote);
2621 goto done;
2622 }
2623 remote->fetch_refs[i] = ref;
2624 remote->nfetch_refs++;
2625 }
2626 (*nremotes)++;
2627 break;
2628 default:
2629 err = got_error(GOT_ERR_PRIVSEP_MSG);
2630 break;
2631 }
2632
2633 imsg_free(&imsg);
2634 if (err)
2635 break;
2636 }
2637 done:
2638 if (err) {
2639 int i;
2640 for (i = 0; i < *nremotes; i++)
2641 free_remote_data(&(*remotes)[i]);
2642 free(*remotes);
2643 *remotes = NULL;
2644 *nremotes = 0;
2645 }
2646 return err;
2647 }
2648
2649 const struct got_error *
2650 got_privsep_send_commit_traversal_request(struct imsgbuf *ibuf,
2651 struct got_object_id *id, int idx, const char *path)
2652 {
2653 struct ibuf *wbuf;
2654 size_t path_len = strlen(path);
2655
2656 wbuf = imsg_create(ibuf, GOT_IMSG_COMMIT_TRAVERSAL_REQUEST, 0, 0,
2657 sizeof(struct got_imsg_commit_traversal_request) + path_len);
2658 if (wbuf == NULL)
2659 return got_error_from_errno(
2660 "imsg_create COMMIT_TRAVERSAL_REQUEST");
2661 /*
2662 * Keep in sync with struct got_imsg_commit_traversal_request
2663 * and struct got_imsg_packed_object.
2664 */
2665 if (imsg_add(wbuf, id, sizeof(*id)) == -1)
2666 return got_error_from_errno("imsg_add "
2667 "COMMIT_TRAVERSAL_REQUEST");
2668 if (imsg_add(wbuf, &idx, sizeof(idx)) == -1)
2669 return got_error_from_errno("imsg_add "
2670 "COMMIT_TRAVERSAL_REQUEST");
2671 if (imsg_add(wbuf, &path_len, sizeof(path_len)) == -1)
2672 return got_error_from_errno("imsg_add "
2673 "COMMIT_TRAVERSAL_REQUEST");
2674 if (imsg_add(wbuf, path, path_len) == -1)
2675 return got_error_from_errno("imsg_add "
2676 "COMMIT_TRAVERSAL_REQUEST");
2677
2678 wbuf->fd = -1;
2679 imsg_close(ibuf, wbuf);
2680
2681 return flush_imsg(ibuf);
2682 }
2683
2684 const struct got_error *
2685 got_privsep_recv_traversed_commits(struct got_commit_object **changed_commit,
2686 struct got_object_id **changed_commit_id,
2687 struct got_object_id_queue *commit_ids, struct imsgbuf *ibuf)
2688 {
2689 const struct got_error *err = NULL;
2690 struct imsg imsg;
2691 struct got_imsg_traversed_commits *icommits;
2692 struct got_object_id *ids;
2693 size_t datalen;
2694 int i, done = 0;
2695
2696 *changed_commit = NULL;
2697 *changed_commit_id = NULL;
2698
2699 while (!done) {
2700 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
2701 if (err)
2702 return err;
2703
2704 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2705 switch (imsg.hdr.type) {
2706 case GOT_IMSG_TRAVERSED_COMMITS:
2707 icommits = imsg.data;
2708 if (datalen != sizeof(*icommits) +
2709 icommits->ncommits * sizeof(*ids)) {
2710 err = got_error(GOT_ERR_PRIVSEP_LEN);
2711 break;
2712 }
2713 ids = imsg.data + sizeof(*icommits);
2714 for (i = 0; i < icommits->ncommits; i++) {
2715 struct got_object_qid *qid;
2716
2717 err = got_object_qid_alloc_partial(&qid);
2718 if (err)
2719 break;
2720 memcpy(&qid->id, &ids[i], sizeof(ids[i]));
2721 STAILQ_INSERT_TAIL(commit_ids, qid, entry);
2722
2723 /* The last commit may contain a change. */
2724 if (i == icommits->ncommits - 1) {
2725 *changed_commit_id =
2726 got_object_id_dup(&qid->id);
2727 if (*changed_commit_id == NULL) {
2728 err = got_error_from_errno(
2729 "got_object_id_dup");
2730 break;
2731 }
2732 }
2733 }
2734 break;
2735 case GOT_IMSG_COMMIT:
2736 if (*changed_commit_id == NULL) {
2737 err = got_error(GOT_ERR_PRIVSEP_MSG);
2738 break;
2739 }
2740 err = get_commit_from_imsg(changed_commit, &imsg,
2741 datalen, ibuf);
2742 break;
2743 case GOT_IMSG_COMMIT_TRAVERSAL_DONE:
2744 done = 1;
2745 break;
2746 default:
2747 err = got_error(GOT_ERR_PRIVSEP_MSG);
2748 break;
2749 }
2750
2751 imsg_free(&imsg);
2752 if (err)
2753 break;
2754 }
2755
2756 if (err)
2757 got_object_id_queue_free(commit_ids);
2758 return err;
2759 }
2760
2761 const struct got_error *
2762 got_privsep_send_enumerated_tree(size_t *totlen, struct imsgbuf *ibuf,
2763 struct got_object_id *tree_id, const char *path,
2764 struct got_parsed_tree_entry *entries, int nentries)
2765 {
2766 const struct got_error *err = NULL;
2767 struct ibuf *wbuf;
2768 size_t path_len = strlen(path);
2769 size_t msglen;
2770
2771 msglen = sizeof(struct got_imsg_enumerated_tree) + path_len;
2772 wbuf = imsg_create(ibuf, GOT_IMSG_ENUMERATED_TREE, 0, 0, msglen);
2773 if (wbuf == NULL)
2774 return got_error_from_errno("imsg_create ENUMERATED_TREE");
2775
2776 if (imsg_add(wbuf, tree_id->sha1, SHA1_DIGEST_LENGTH) == -1)
2777 return got_error_from_errno("imsg_add ENUMERATED_TREE");
2778 if (imsg_add(wbuf, &nentries, sizeof(nentries)) == -1)
2779 return got_error_from_errno("imsg_add ENUMERATED_TREE");
2780 if (imsg_add(wbuf, path, path_len) == -1)
2781 return got_error_from_errno("imsg_add ENUMERATED_TREE");
2782
2783 wbuf->fd = -1;
2784 imsg_close(ibuf, wbuf);
2785
2786 if (entries) {
2787 err = send_tree_entries(ibuf, entries, nentries);
2788 if (err)
2789 return err;
2790 }
2791
2792 return flush_imsg(ibuf);
2793 }
2794
2795 const struct got_error *
2796 got_privsep_send_object_enumeration_request(struct imsgbuf *ibuf)
2797 {
2798 if (imsg_compose(ibuf, GOT_IMSG_OBJECT_ENUMERATION_REQUEST,
2799 0, 0, -1, NULL, 0) == -1)
2800 return got_error_from_errno("imsg_compose "
2801 "OBJECT_ENUMERATION_REQUEST");
2802
2803 return flush_imsg(ibuf);
2804 }
2805
2806 const struct got_error *
2807 got_privsep_send_object_enumeration_done(struct imsgbuf *ibuf)
2808 {
2809 if (imsg_compose(ibuf, GOT_IMSG_OBJECT_ENUMERATION_DONE,
2810 0, 0, -1, NULL, 0) == -1)
2811 return got_error_from_errno("imsg_compose "
2812 "OBJECT_ENUMERATION_DONE");
2813
2814 return flush_imsg(ibuf);
2815 }
2816
2817 const struct got_error *
2818 got_privsep_send_object_enumeration_incomplete(struct imsgbuf *ibuf)
2819 {
2820 if (imsg_compose(ibuf, GOT_IMSG_OBJECT_ENUMERATION_INCOMPLETE,
2821 0, 0, -1, NULL, 0) == -1)
2822 return got_error_from_errno("imsg_compose "
2823 "OBJECT_ENUMERATION_INCOMPLETE");
2824
2825 return flush_imsg(ibuf);
2826 }
2827
2828 const struct got_error *
2829 got_privsep_send_enumerated_commit(struct imsgbuf *ibuf,
2830 struct got_object_id *id, time_t mtime)
2831 {
2832 struct ibuf *wbuf;
2833
2834 wbuf = imsg_create(ibuf, GOT_IMSG_ENUMERATED_COMMIT, 0, 0,
2835 sizeof(struct got_imsg_enumerated_commit) + SHA1_DIGEST_LENGTH);
2836 if (wbuf == NULL)
2837 return got_error_from_errno("imsg_create ENUMERATED_COMMIT");
2838
2839 /* Keep in sync with struct got_imsg_enumerated_commit! */
2840 if (imsg_add(wbuf, id, SHA1_DIGEST_LENGTH) == -1)
2841 return got_error_from_errno("imsg_add ENUMERATED_COMMIT");
2842 if (imsg_add(wbuf, &mtime, sizeof(mtime)) == -1)
2843 return got_error_from_errno("imsg_add ENUMERATED_COMMIT");
2844
2845 wbuf->fd = -1;
2846 imsg_close(ibuf, wbuf);
2847 /* Don't flush yet, tree entries or ENUMERATION_DONE will follow. */
2848 return NULL;
2849 }
2850
2851 const struct got_error *
2852 got_privsep_recv_enumerated_objects(int *found_all_objects,
2853 struct imsgbuf *ibuf,
2854 got_object_enumerate_commit_cb cb_commit,
2855 got_object_enumerate_tree_cb cb_tree, void *cb_arg,
2856 struct got_repository *repo)
2857 {
2858 const struct got_error *err = NULL;
2859 struct imsg imsg;
2860 struct got_imsg_enumerated_commit *icommit = NULL;
2861 struct got_object_id commit_id;
2862 int have_commit = 0;
2863 time_t mtime = 0;
2864 struct got_tree_object tree;
2865 struct got_imsg_enumerated_tree *itree;
2866 struct got_object_id tree_id;
2867 char *path = NULL, *canon_path = NULL;
2868 size_t datalen, path_len;
2869 int nentries = -1;
2870 int done = 0;
2871
2872 *found_all_objects = 0;
2873 memset(&tree, 0, sizeof(tree));
2874
2875 while (!done) {
2876 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
2877 if (err)
2878 break;
2879
2880 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
2881 switch (imsg.hdr.type) {
2882 case GOT_IMSG_ENUMERATED_COMMIT:
2883 if (have_commit && nentries != -1) {
2884 err = got_error(GOT_ERR_PRIVSEP_MSG);
2885 break;
2886 }
2887 if (datalen != sizeof(*icommit)) {
2888 err = got_error(GOT_ERR_PRIVSEP_LEN);
2889 break;
2890 }
2891 icommit = (struct got_imsg_enumerated_commit *)imsg.data;
2892 memcpy(commit_id.sha1, icommit->id, SHA1_DIGEST_LENGTH);
2893 mtime = icommit->mtime;
2894 have_commit = 1;
2895 break;
2896 case GOT_IMSG_ENUMERATED_TREE:
2897 /* Should be preceeded by GOT_IMSG_ENUMERATED_COMMIT. */
2898 if (!have_commit) {
2899 err = got_error(GOT_ERR_PRIVSEP_MSG);
2900 break;
2901 }
2902 if (datalen < sizeof(*itree)) {
2903 err = got_error(GOT_ERR_PRIVSEP_LEN);
2904 break;
2905 }
2906 itree = imsg.data;
2907 path_len = datalen - sizeof(*itree);
2908 if (path_len == 0) {
2909 err = got_error(GOT_ERR_PRIVSEP_LEN);
2910 break;
2911 }
2912 memcpy(tree_id.sha1, itree->id, sizeof(tree_id.sha1));
2913 free(path);
2914 path = strndup(imsg.data + sizeof(*itree), path_len);
2915 if (path == NULL) {
2916 err = got_error_from_errno("strndup");
2917 break;
2918 }
2919 free(canon_path);
2920 canon_path = malloc(path_len + 1);
2921 if (canon_path == NULL) {
2922 err = got_error_from_errno("malloc");
2923 break;
2924 }
2925 if (!got_path_is_absolute(path)) {
2926 err = got_error(GOT_ERR_BAD_PATH);
2927 break;
2928 }
2929 if (got_path_is_root_dir(path)) {
2930 /* XXX check what got_canonpath() does wrong */
2931 canon_path[0] = '/';
2932 canon_path[1] = '\0';
2933 } else {
2934 err = got_canonpath(path, canon_path,
2935 path_len + 1);
2936 if (err)
2937 break;
2938 }
2939 if (strcmp(path, canon_path) != 0) {
2940 err = got_error(GOT_ERR_BAD_PATH);
2941 break;
2942 }
2943 if (nentries != -1) {
2944 err = got_error(GOT_ERR_PRIVSEP_MSG);
2945 break;
2946 }
2947 if (itree->nentries < -1) {
2948 err = got_error(GOT_ERR_PRIVSEP_MSG);
2949 break;
2950 }
2951 if (itree->nentries == -1) {
2952 /* Tree was not found in pack file. */
2953 err = cb_tree(cb_arg, NULL, mtime, &tree_id,
2954 path, repo);
2955 break;
2956 }
2957 if (itree->nentries > INT_MAX) {
2958 err = got_error(GOT_ERR_PRIVSEP_LEN);
2959 break;
2960 }
2961 tree.entries = calloc(itree->nentries,
2962 sizeof(struct got_tree_entry));
2963 if (tree.entries == NULL) {
2964 err = got_error_from_errno("calloc");
2965 break;
2966 }
2967 if (itree->nentries == 0) {
2968 err = cb_tree(cb_arg, &tree, mtime, &tree_id,
2969 path, repo);
2970 if (err)
2971 break;
2972
2973 /* Prepare for next tree. */
2974 free(tree.entries);
2975 memset(&tree, 0, sizeof(tree));
2976 nentries = -1;
2977 } else {
2978 tree.nentries = itree->nentries;
2979 nentries = 0;
2980 }
2981 break;
2982 case GOT_IMSG_TREE_ENTRIES:
2983 /* Should be preceeded by GOT_IMSG_ENUMERATED_TREE. */
2984 if (nentries <= -1) {
2985 err = got_error(GOT_ERR_PRIVSEP_MSG);
2986 break;
2987 }
2988 err = recv_tree_entries(imsg.data, datalen,
2989 &tree, &nentries);
2990 if (err)
2991 break;
2992 if (tree.nentries == nentries) {
2993 err = cb_tree(cb_arg, &tree, mtime, &tree_id,
2994 path, repo);
2995 if (err)
2996 break;
2997
2998 /* Prepare for next tree. */
2999 free(tree.entries);
3000 memset(&tree, 0, sizeof(tree));
3001 nentries = -1;
3002 }
3003 break;
3004 case GOT_IMSG_TREE_ENUMERATION_DONE:
3005 /* All trees have been found and traversed. */
3006 if (!have_commit || path == NULL || nentries != -1) {
3007 err = got_error(GOT_ERR_PRIVSEP_MSG);
3008 break;
3009 }
3010 err = cb_commit(cb_arg, mtime, &commit_id, repo);
3011 if (err)
3012 break;
3013 have_commit = 0;
3014 break;
3015 case GOT_IMSG_OBJECT_ENUMERATION_DONE:
3016 *found_all_objects = 1;
3017 done = 1;
3018 break;
3019 case GOT_IMSG_OBJECT_ENUMERATION_INCOMPLETE:
3020 done = 1;
3021 break;
3022 default:
3023 err = got_error(GOT_ERR_PRIVSEP_MSG);
3024 break;
3025 }
3026
3027 imsg_free(&imsg);
3028 if (err)
3029 break;
3030 }
3031
3032 free(path);
3033 free(canon_path);
3034 free(tree.entries);
3035 return err;
3036 }
3037
3038 const struct got_error *
3039 got_privsep_send_raw_delta_req(struct imsgbuf *ibuf, int idx,
3040 struct got_object_id *id)
3041 {
3042 struct got_imsg_raw_delta_request dreq;
3043
3044 memset(&dreq, 0, sizeof(dreq));
3045 dreq.idx = idx;
3046 memcpy(&dreq.id, id, sizeof(dreq.id));
3047
3048 if (imsg_compose(ibuf, GOT_IMSG_RAW_DELTA_REQUEST, 0, 0, -1,
3049 &dreq, sizeof(dreq)) == -1)
3050 return got_error_from_errno("imsg_compose RAW_DELTA_REQUEST");
3051
3052 return flush_imsg(ibuf);
3053 }
3054
3055 const struct got_error *
3056 got_privsep_send_raw_delta_outfd(struct imsgbuf *ibuf, int fd)
3057 {
3058 return send_fd(ibuf, GOT_IMSG_RAW_DELTA_OUTFD, fd);
3059 }
3060
3061 const struct got_error *
3062 got_privsep_send_raw_delta(struct imsgbuf *ibuf, uint64_t base_size,
3063 uint64_t result_size, off_t delta_size, off_t delta_compressed_size,
3064 off_t delta_offset, off_t delta_out_offset, struct got_object_id *base_id)
3065 {
3066 struct got_imsg_raw_delta idelta;
3067 int ret;
3068
3069 memset(&idelta, 0, sizeof(idelta));
3070 idelta.base_size = base_size;
3071 idelta.result_size = result_size;
3072 idelta.delta_size = delta_size;
3073 idelta.delta_compressed_size = delta_compressed_size;
3074 idelta.delta_offset = delta_offset;
3075 idelta.delta_out_offset = delta_out_offset;
3076 memcpy(&idelta.base_id, &base_id, sizeof(idelta.base_id));
3077
3078 ret = imsg_compose(ibuf, GOT_IMSG_RAW_DELTA, 0, 0, -1,
3079 &idelta, sizeof(idelta));
3080 if (ret == -1)
3081 return got_error_from_errno("imsg_compose RAW_DELTA");
3082
3083 return flush_imsg(ibuf);
3084 }
3085
3086 const struct got_error *
3087 got_privsep_recv_raw_delta(uint64_t *base_size, uint64_t *result_size,
3088 off_t *delta_size, off_t *delta_compressed_size, off_t *delta_offset,
3089 off_t *delta_out_offset, struct got_object_id **base_id,
3090 struct imsgbuf *ibuf)
3091 {
3092 const struct got_error *err = NULL;
3093 struct imsg imsg;
3094 struct got_imsg_raw_delta *delta;
3095 size_t datalen;
3096
3097 *base_size = 0;
3098 *result_size = 0;
3099 *delta_size = 0;
3100 *delta_compressed_size = 0;
3101 *delta_offset = 0;
3102 *delta_out_offset = 0;
3103 *base_id = NULL;
3104
3105 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
3106 if (err)
3107 return err;
3108
3109 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
3110
3111 switch (imsg.hdr.type) {
3112 case GOT_IMSG_RAW_DELTA:
3113 if (datalen != sizeof(*delta)) {
3114 err = got_error(GOT_ERR_PRIVSEP_LEN);
3115 break;
3116 }
3117 delta = imsg.data;
3118 *base_size = delta->base_size;
3119 *result_size = delta->result_size;
3120 *delta_size = delta->delta_size;
3121 *delta_compressed_size = delta->delta_compressed_size;
3122 *delta_offset = delta->delta_offset;
3123 *delta_out_offset = delta->delta_out_offset;
3124 *base_id = calloc(1, sizeof(**base_id));
3125 if (*base_id == NULL) {
3126 err = got_error_from_errno("malloc");
3127 break;
3128 }
3129 memcpy(*base_id, &delta->base_id, sizeof(**base_id));
3130 break;
3131 default:
3132 err = got_error(GOT_ERR_PRIVSEP_MSG);
3133 break;
3134 }
3135
3136 imsg_free(&imsg);
3137
3138 if (err) {
3139 free(*base_id);
3140 *base_id = NULL;
3141 }
3142 return err;
3143 }
3144
3145 static const struct got_error *
3146 send_idlist(struct imsgbuf *ibuf, struct got_object_id **ids, size_t nids)
3147 {
3148 const struct got_error *err = NULL;
3149 struct got_imsg_object_idlist idlist;
3150 struct ibuf *wbuf;
3151 size_t i;
3152
3153 memset(&idlist, 0, sizeof(idlist));
3154
3155 if (nids > GOT_IMSG_OBJ_ID_LIST_MAX_NIDS)
3156 return got_error(GOT_ERR_NO_SPACE);
3157
3158 wbuf = imsg_create(ibuf, GOT_IMSG_OBJ_ID_LIST, 0, 0,
3159 sizeof(idlist) + nids * sizeof(**ids));
3160 if (wbuf == NULL) {
3161 err = got_error_from_errno("imsg_create OBJ_ID_LIST");
3162 return err;
3163 }
3164
3165 idlist.nids = nids;
3166 if (imsg_add(wbuf, &idlist, sizeof(idlist)) == -1)
3167 return got_error_from_errno("imsg_add OBJ_ID_LIST");
3168
3169 for (i = 0; i < nids; i++) {
3170 struct got_object_id *id = ids[i];
3171 if (imsg_add(wbuf, id, sizeof(*id)) == -1)
3172 return got_error_from_errno("imsg_add OBJ_ID_LIST");
3173 }
3174
3175 wbuf->fd = -1;
3176 imsg_close(ibuf, wbuf);
3177
3178 return flush_imsg(ibuf);
3179 }
3180
3181 const struct got_error *
3182 got_privsep_send_object_idlist(struct imsgbuf *ibuf,
3183 struct got_object_id **ids, size_t nids)
3184 {
3185 const struct got_error *err = NULL;
3186 struct got_object_id *idlist[GOT_IMSG_OBJ_ID_LIST_MAX_NIDS];
3187 int i, queued = 0;
3188
3189 for (i = 0; i < nids; i++) {
3190 idlist[i % nitems(idlist)] = ids[i];
3191 queued++;
3192 if (queued >= nitems(idlist)) {
3193 err = send_idlist(ibuf, idlist, queued);
3194 if (err)
3195 return err;
3196 queued = 0;
3197 }
3198 }
3199
3200 if (queued > 0) {
3201 err = send_idlist(ibuf, idlist, queued);
3202 if (err)
3203 return err;
3204 }
3205
3206 return NULL;
3207 }
3208
3209 const struct got_error *
3210 got_privsep_send_object_idlist_done(struct imsgbuf *ibuf)
3211 {
3212 if (imsg_compose(ibuf, GOT_IMSG_OBJ_ID_LIST_DONE, 0, 0, -1, NULL, 0)
3213 == -1)
3214 return got_error_from_errno("imsg_compose OBJ_ID_LIST_DONE");
3215
3216 return flush_imsg(ibuf);
3217 }
3218
3219 const struct got_error *
3220 got_privsep_recv_object_idlist(int *done, struct got_object_id **ids,
3221 size_t *nids, struct imsgbuf *ibuf)
3222 {
3223 const struct got_error *err = NULL;
3224 struct imsg imsg;
3225 struct got_imsg_object_idlist *idlist;
3226 size_t datalen;
3227
3228 *ids = NULL;
3229 *done = 0;
3230 *nids = 0;
3231
3232 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
3233 if (err)
3234 return err;
3235
3236 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
3237 switch (imsg.hdr.type) {
3238 case GOT_IMSG_OBJ_ID_LIST:
3239 if (datalen < sizeof(*idlist)) {
3240 err = got_error(GOT_ERR_PRIVSEP_LEN);
3241 break;
3242 }
3243 idlist = imsg.data;
3244 if (idlist->nids > GOT_IMSG_OBJ_ID_LIST_MAX_NIDS ||
3245 idlist->nids * sizeof(**ids) > datalen - sizeof(*idlist)) {
3246 err = got_error(GOT_ERR_PRIVSEP_LEN);
3247 break;
3248 }
3249 *nids = idlist->nids;
3250 *ids = calloc(*nids, sizeof(**ids));
3251 if (*ids == NULL) {
3252 err = got_error_from_errno("calloc");
3253 break;
3254 }
3255 memcpy(*ids, (uint8_t *)imsg.data + sizeof(*idlist),
3256 *nids * sizeof(**ids));
3257 break;
3258 case GOT_IMSG_OBJ_ID_LIST_DONE:
3259 *done = 1;
3260 break;
3261 default:
3262 err = got_error(GOT_ERR_PRIVSEP_MSG);
3263 break;
3264 }
3265
3266 imsg_free(&imsg);
3267
3268 return err;
3269 }
3270
3271 const struct got_error *
3272 got_privsep_send_delta_reuse_req(struct imsgbuf *ibuf)
3273 {
3274 if (imsg_compose(ibuf, GOT_IMSG_DELTA_REUSE_REQUEST, 0, 0, -1, NULL, 0)
3275 == -1)
3276 return got_error_from_errno("imsg_compose DELTA_REUSE_REQUEST");
3277
3278 return flush_imsg(ibuf);
3279 }
3280
3281 const struct got_error *
3282 got_privsep_send_reused_deltas(struct imsgbuf *ibuf,
3283 struct got_imsg_reused_delta *deltas, size_t ndeltas)
3284 {
3285 const struct got_error *err = NULL;
3286 struct ibuf *wbuf;
3287 struct got_imsg_reused_deltas ideltas;
3288 size_t i;
3289
3290 memset(&ideltas, 0, sizeof(ideltas));
3291
3292 if (ndeltas > GOT_IMSG_REUSED_DELTAS_MAX_NDELTAS)
3293 return got_error(GOT_ERR_NO_SPACE);
3294
3295 wbuf = imsg_create(ibuf, GOT_IMSG_REUSED_DELTAS, 0, 0,
3296 sizeof(ideltas) + ndeltas * sizeof(*deltas));
3297 if (wbuf == NULL) {
3298 err = got_error_from_errno("imsg_create REUSED_DELTAS");
3299 return err;
3300 }
3301
3302 ideltas.ndeltas = ndeltas;
3303 if (imsg_add(wbuf, &ideltas, sizeof(ideltas)) == -1)
3304 return got_error_from_errno("imsg_add REUSED_DELTAS");
3305
3306 for (i = 0; i < ndeltas; i++) {
3307 struct got_imsg_reused_delta *delta = &deltas[i];
3308 if (imsg_add(wbuf, delta, sizeof(*delta)) == -1)
3309 return got_error_from_errno("imsg_add REUSED_DELTAS");
3310 }
3311
3312 wbuf->fd = -1;
3313 imsg_close(ibuf, wbuf);
3314
3315 return flush_imsg(ibuf);
3316 }
3317
3318 const struct got_error *
3319 got_privsep_send_reused_deltas_done(struct imsgbuf *ibuf)
3320 {
3321 if (imsg_compose(ibuf, GOT_IMSG_DELTA_REUSE_DONE, 0, 0, -1, NULL, 0)
3322 == -1)
3323 return got_error_from_errno("imsg_compose DELTA_REUSE_DONE");
3324
3325 return flush_imsg(ibuf);
3326 }
3327
3328 const struct got_error *
3329 got_privsep_recv_reused_deltas(int *done, struct got_imsg_reused_delta *deltas,
3330 size_t *ndeltas, struct imsgbuf *ibuf)
3331 {
3332 const struct got_error *err = NULL;
3333 struct imsg imsg;
3334 struct got_imsg_reused_deltas *ideltas;
3335 size_t datalen;
3336
3337 *done = 0;
3338 *ndeltas = 0;
3339
3340 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
3341 if (err)
3342 return err;
3343
3344 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
3345 switch (imsg.hdr.type) {
3346 case GOT_IMSG_REUSED_DELTAS:
3347 if (datalen < sizeof(*ideltas)) {
3348 err = got_error(GOT_ERR_PRIVSEP_LEN);
3349 break;
3350 }
3351 ideltas = imsg.data;
3352 if (ideltas->ndeltas > GOT_IMSG_OBJ_ID_LIST_MAX_NIDS ||
3353 ideltas->ndeltas * sizeof(*deltas) >
3354 datalen - sizeof(*ideltas)) {
3355 err = got_error(GOT_ERR_PRIVSEP_LEN);
3356 break;
3357 }
3358 *ndeltas = ideltas->ndeltas;
3359 memcpy(deltas, (uint8_t *)imsg.data + sizeof(*ideltas),
3360 *ndeltas * sizeof(*deltas));
3361 break;
3362 case GOT_IMSG_DELTA_REUSE_DONE:
3363 *done = 1;
3364 break;
3365 default:
3366 err = got_error(GOT_ERR_PRIVSEP_MSG);
3367 break;
3368 }
3369
3370 imsg_free(&imsg);
3371
3372 return err;
3373 }
3374
3375 const struct got_error *
3376 got_privsep_init_commit_painting(struct imsgbuf *ibuf)
3377 {
3378 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_PAINTING_INIT,
3379 0, 0, -1, NULL, 0)
3380 == -1)
3381 return got_error_from_errno("imsg_compose "
3382 "COMMIT_PAINTING_INIT");
3383
3384 return flush_imsg(ibuf);
3385 }
3386
3387 const struct got_error *
3388 got_privsep_send_painting_request(struct imsgbuf *ibuf, int idx,
3389 struct got_object_id *id, intptr_t color)
3390 {
3391 struct got_imsg_commit_painting_request ireq;
3392
3393 memset(&ireq, 0, sizeof(ireq));
3394 memcpy(&ireq.id, id, sizeof(ireq.id));
3395 ireq.idx = idx;
3396 ireq.color = color;
3397
3398 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_PAINTING_REQUEST, 0, 0, -1,
3399 &ireq, sizeof(ireq)) == -1)
3400 return got_error_from_errno("imsg_compose "
3401 "COMMIT_PAINTING_REQUEST");
3402
3403 return flush_imsg(ibuf);
3404 }
3405
3406 static const struct got_error *
3407 send_painted_commits(struct got_object_id_queue *ids, int *nids,
3408 size_t remain, int present_in_pack, struct imsgbuf *ibuf)
3409 {
3410 const struct got_error *err = NULL;
3411 struct ibuf *wbuf = NULL;
3412 struct got_object_qid *qid;
3413 size_t msglen;
3414 int ncommits;
3415 intptr_t color;
3416
3417 msglen = MIN(remain, MAX_IMSGSIZE - IMSG_HEADER_SIZE);
3418 ncommits = (msglen - sizeof(struct got_imsg_painted_commits)) /
3419 sizeof(struct got_imsg_painted_commit);
3420
3421 wbuf = imsg_create(ibuf, GOT_IMSG_PAINTED_COMMITS, 0, 0, msglen);
3422 if (wbuf == NULL) {
3423 err = got_error_from_errno("imsg_create PAINTED_COMMITS");
3424 return err;
3425 }
3426
3427 /* Keep in sync with struct got_imsg_painted_commits! */
3428 if (imsg_add(wbuf, &ncommits, sizeof(ncommits)) == -1)
3429 return got_error_from_errno("imsg_add PAINTED_COMMITS");
3430 if (imsg_add(wbuf, &present_in_pack, sizeof(present_in_pack)) == -1)
3431 return got_error_from_errno("imsg_add PAINTED_COMMITS");
3432
3433 while (ncommits > 0) {
3434 qid = STAILQ_FIRST(ids);
3435 STAILQ_REMOVE_HEAD(ids, entry);
3436 ncommits--;
3437 (*nids)--;
3438 color = (intptr_t)qid->data;
3439
3440 /* Keep in sync with struct got_imsg_painted_commit! */
3441 if (imsg_add(wbuf, qid->id.sha1, SHA1_DIGEST_LENGTH) == -1)
3442 return got_error_from_errno("imsg_add PAINTED_COMMITS");
3443 if (imsg_add(wbuf, &color, sizeof(color)) == -1)
3444 return got_error_from_errno("imsg_add PAINTED_COMMITS");
3445
3446 got_object_qid_free(qid);
3447 }
3448
3449 wbuf->fd = -1;
3450 imsg_close(ibuf, wbuf);
3451
3452 return flush_imsg(ibuf);
3453 }
3454
3455 const struct got_error *
3456 got_privsep_send_painted_commits(struct imsgbuf *ibuf,
3457 struct got_object_id_queue *ids, int *nids,
3458 int present_in_pack, int flush)
3459 {
3460 const struct got_error *err;
3461 size_t remain;
3462
3463 if (*nids <= 0)
3464 return NULL;
3465
3466 do {
3467 remain = (sizeof(struct got_imsg_painted_commits)) +
3468 *nids * sizeof(struct got_imsg_painted_commit);
3469 if (flush || remain >= MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
3470 err = send_painted_commits(ids, nids, remain,
3471 present_in_pack, ibuf);
3472 if (err)
3473 return err;
3474 }
3475 } while (flush && *nids > 0);
3476
3477 return NULL;
3478 }
3479
3480 const struct got_error *
3481 got_privsep_send_painting_commits_done(struct imsgbuf *ibuf)
3482 {
3483 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_PAINTING_DONE,
3484 0, 0, -1, NULL, 0)
3485 == -1)
3486 return got_error_from_errno("imsg_compose "
3487 "COMMIT_PAINTING_DONE");
3488
3489 return flush_imsg(ibuf);
3490 }
3491
3492 const struct got_error *
3493 got_privsep_recv_painted_commits(struct got_object_id_queue *new_ids,
3494 got_privsep_recv_painted_commit_cb cb, void *cb_arg, struct imsgbuf *ibuf)
3495 {
3496 const struct got_error *err = NULL;
3497 struct imsg imsg;
3498 struct got_imsg_painted_commits icommits;
3499 struct got_imsg_painted_commit icommit;
3500 size_t datalen;
3501 int i;
3502
3503 for (;;) {
3504 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
3505 if (err)
3506 return err;
3507
3508 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
3509 if (imsg.hdr.type == GOT_IMSG_COMMIT_PAINTING_DONE)
3510 break;
3511 if (imsg.hdr.type != GOT_IMSG_PAINTED_COMMITS)
3512 return got_error(GOT_ERR_PRIVSEP_MSG);
3513
3514 if (datalen < sizeof(icommits))
3515 return got_error(GOT_ERR_PRIVSEP_LEN);
3516 memcpy(&icommits, imsg.data, sizeof(icommits));
3517 if (icommits.ncommits * sizeof(icommit) < icommits.ncommits ||
3518 datalen < sizeof(icommits) +
3519 icommits.ncommits * sizeof(icommit))
3520 return got_error(GOT_ERR_PRIVSEP_LEN);
3521
3522 for (i = 0; i < icommits.ncommits; i++) {
3523 memcpy(&icommit,
3524 (uint8_t *)imsg.data + sizeof(icommits) + i * sizeof(icommit),
3525 sizeof(icommit));
3526
3527 if (icommits.present_in_pack) {
3528 struct got_object_id id;
3529 memcpy(id.sha1, icommit.id, SHA1_DIGEST_LENGTH);
3530 err = cb(cb_arg, &id, icommit.color);
3531 if (err)
3532 break;
3533 } else {
3534 struct got_object_qid *qid;
3535 err = got_object_qid_alloc_partial(&qid);
3536 if (err)
3537 break;
3538 memcpy(qid->id.sha1, icommit.id,
3539 SHA1_DIGEST_LENGTH);
3540 qid->data = (void *)icommit.color;
3541 STAILQ_INSERT_TAIL(new_ids, qid, entry);
3542 }
3543 }
3544
3545 imsg_free(&imsg);
3546 }
3547
3548 return err;
3549 }
3550
3551 const struct got_error *
3552 got_privsep_unveil_exec_helpers(void)
3553 {
3554 const char *helpers[] = {
3555 GOT_PATH_PROG_READ_PACK,
3556 GOT_PATH_PROG_READ_OBJECT,
3557 GOT_PATH_PROG_READ_COMMIT,
3558 GOT_PATH_PROG_READ_TREE,
3559 GOT_PATH_PROG_READ_BLOB,
3560 GOT_PATH_PROG_READ_TAG,
3561 GOT_PATH_PROG_READ_GITCONFIG,
3562 GOT_PATH_PROG_READ_GOTCONFIG,
3563 GOT_PATH_PROG_READ_PATCH,
3564 GOT_PATH_PROG_FETCH_PACK,
3565 GOT_PATH_PROG_INDEX_PACK,
3566 GOT_PATH_PROG_SEND_PACK,
3567 };
3568 size_t i;
3569
3570 for (i = 0; i < nitems(helpers); i++) {
3571 if (unveil(helpers[i], "x") == 0)
3572 continue;
3573 return got_error_from_errno2("unveil", helpers[i]);
3574 }
3575
3576 return NULL;
3577 }
3578
3579 void
3580 got_privsep_exec_child(int imsg_fds[2], const char *path, const char *repo_path)
3581 {
3582 if (close(imsg_fds[0]) == -1) {
3583 fprintf(stderr, "%s: %s\n", getprogname(), strerror(errno));
3584 _exit(1);
3585 }
3586
3587 if (dup2(imsg_fds[1], GOT_IMSG_FD_CHILD) == -1) {
3588 fprintf(stderr, "%s: %s\n", getprogname(), strerror(errno));
3589 _exit(1);
3590 }
3591
3592 closefrom(GOT_IMSG_FD_CHILD + 1);
3593
3594 if (execl(path, path, repo_path, (char *)NULL) == -1) {
3595 fprintf(stderr, "%s: %s: %s\n", getprogname(), path,
3596 strerror(errno));
3597 _exit(1);
3598 }
3599 }
portable version of Game of Trees