Bug Summary

File:libexec/got-read-gitconfig/../../lib/privsep.c
Warning:line 1960, column 8
Array access (via field 'refs') results in a null pointer dereference

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd6.9 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name privsep.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/local/lib/clang/11.1.0 -I /home/ben/Projects/got/libexec/got-read-gitconfig/../../include -I /home/ben/Projects/got/libexec/got-read-gitconfig/../../lib -D GOT_LIBEXECDIR=/home/ben/bin -D GOT_VERSION=0.53-current -internal-isystem /usr/local/lib/clang/11.1.0/include -internal-externc-isystem /usr/include -O0 -fdebug-compilation-dir /home/ben/Projects/got/libexec/got-read-gitconfig/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /home/ben/Projects/got/scan/2021-05-28-230913-68537-1 -x c /home/ben/Projects/got/libexec/got-read-gitconfig/../../lib/privsep.c
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(*__errno()).h>
30#include <stdint.h>
31#include <poll.h>
32#include <imsg.h>
33#include <sha1.h>
34#include <unistd.h>
35#include <zlib.h>
36#include <time.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_sha1.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_privsep.h"
49#include "got_lib_pack.h"
50
51#ifndef MIN
52#define MIN(_a,_b)((_a) < (_b) ? (_a) : (_b)) ((_a) < (_b) ? (_a) : (_b))
53#endif
54
55#ifndef nitems
56#define nitems(_a)(sizeof((_a)) / sizeof((_a)[0])) (sizeof((_a)) / sizeof((_a)[0]))
57#endif
58
59static const struct got_error *
60poll_fd(int fd, int events, int timeout)
61{
62 struct pollfd pfd[1];
63 struct timespec ts;
64 sigset_t sigset;
65 int n;
66
67 pfd[0].fd = fd;
68 pfd[0].events = events;
69
70 ts.tv_sec = timeout;
71 ts.tv_nsec = 0;
72
73 if (sigemptyset(&sigset) == -1)
74 return got_error_from_errno("sigemptyset");
75 if (sigaddset(&sigset, SIGWINCH28) == -1)
76 return got_error_from_errno("sigaddset");
77
78 n = ppoll(pfd, 1, timeout == INFTIM(-1) ? NULL((void *)0) : &ts, &sigset);
79 if (n == -1)
80 return got_error_from_errno("ppoll");
81 if (n == 0)
82 return got_error(GOT_ERR_TIMEOUT33);
83 if (pfd[0].revents & (POLLERR0x0008 | POLLNVAL0x0020))
84 return got_error_from_errno("poll error");
85 if (pfd[0].revents & (events | POLLHUP0x0010))
86 return NULL((void *)0);
87
88 return got_error(GOT_ERR_INTERRUPT34);
89}
90
91static const struct got_error *
92read_imsg(struct imsgbuf *ibuf)
93{
94 const struct got_error *err;
95 size_t n;
96
97 err = poll_fd(ibuf->fd, POLLIN0x0001, INFTIM(-1));
98 if (err)
99 return err;
100
101 n = imsg_read(ibuf);
102 if (n == -1) {
103 if (errno(*__errno()) == EAGAIN35) /* Could be a file-descriptor leak. */
104 return got_error(GOT_ERR_PRIVSEP_NO_FD38);
105 return got_error(GOT_ERR_PRIVSEP_READ35);
106 }
107 if (n == 0)
108 return got_error(GOT_ERR_PRIVSEP_PIPE37);
109
110 return NULL((void *)0);
111}
112
113const struct got_error *
114got_privsep_wait_for_child(pid_t pid)
115{
116 int child_status;
117
118 if (waitpid(pid, &child_status, 0) == -1)
119 return got_error_from_errno("waitpid");
120
121 if (!WIFEXITED(child_status)(((child_status) & 0177) == 0))
122 return got_error(GOT_ERR_PRIVSEP_DIED40);
123
124 if (WEXITSTATUS(child_status)(int)(((unsigned)(child_status) >> 8) & 0xff) != 0)
125 return got_error(GOT_ERR_PRIVSEP_EXIT41);
126
127 return NULL((void *)0);
128}
129
130static const struct got_error *
131recv_imsg_error(struct imsg *imsg, size_t datalen)
132{
133 struct got_imsg_error *ierr;
134
135 if (datalen != sizeof(*ierr))
136 return got_error(GOT_ERR_PRIVSEP_LEN36);
137
138 ierr = imsg->data;
139 if (ierr->code == GOT_ERR_ERRNO1) {
140 static struct got_error serr;
141 serr.code = GOT_ERR_ERRNO1;
142 serr.msg = strerror(ierr->errno_code);
143 return &serr;
144 }
145
146 return got_error(ierr->code);
147}
148
149const struct got_error *
150got_privsep_recv_imsg(struct imsg *imsg, struct imsgbuf *ibuf,
151 size_t min_datalen)
152{
153 const struct got_error *err;
154 ssize_t n;
155
156 n = imsg_get(ibuf, imsg);
157 if (n == -1)
158 return got_error_from_errno("imsg_get");
159
160 while (n == 0) {
161 err = read_imsg(ibuf);
162 if (err)
163 return err;
164 n = imsg_get(ibuf, imsg);
165 if (n == -1)
166 return got_error_from_errno("imsg_get");
167 }
168
169 if (imsg->hdr.len < IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + min_datalen)
170 return got_error(GOT_ERR_PRIVSEP_LEN36);
171
172 if (imsg->hdr.type == GOT_IMSG_ERROR) {
173 size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
174 return recv_imsg_error(imsg, datalen);
175 }
176
177 return NULL((void *)0);
178}
179
180/* Attempt to send an error in an imsg. Complain on stderr as a last resort. */
181void
182got_privsep_send_error(struct imsgbuf *ibuf, const struct got_error *err)
183{
184 const struct got_error *poll_err;
185 struct got_imsg_error ierr;
186 int ret;
187
188 ierr.code = err->code;
189 if (err->code == GOT_ERR_ERRNO1)
190 ierr.errno_code = errno(*__errno());
191 else
192 ierr.errno_code = 0;
193 ret = imsg_compose(ibuf, GOT_IMSG_ERROR, 0, 0, -1, &ierr, sizeof(ierr));
194 if (ret == -1) {
195 fprintf(stderr(&__sF[2]), "%s: error %d \"%s\": imsg_compose: %s\n",
196 getprogname(), err->code, err->msg, strerror(errno(*__errno())));
197 return;
198 }
199
200 poll_err = poll_fd(ibuf->fd, POLLOUT0x0004, INFTIM(-1));
201 if (poll_err) {
202 fprintf(stderr(&__sF[2]), "%s: error %d \"%s\": poll: %s\n",
203 getprogname(), err->code, err->msg, poll_err->msg);
204 return;
205 }
206
207 ret = imsg_flush(ibuf);
208 if (ret == -1) {
209 fprintf(stderr(&__sF[2]), "%s: error %d \"%s\": imsg_flush: %s\n",
210 getprogname(), err->code, err->msg, strerror(errno(*__errno())));
211 return;
212 }
213}
214
215static const struct got_error *
216flush_imsg(struct imsgbuf *ibuf)
217{
218 const struct got_error *err;
219
220 err = poll_fd(ibuf->fd, POLLOUT0x0004, INFTIM(-1));
221 if (err)
222 return err;
223
224 if (imsg_flush(ibuf) == -1)
225 return got_error_from_errno("imsg_flush");
226
227 return NULL((void *)0);
228}
229
230const struct got_error *
231got_privsep_flush_imsg(struct imsgbuf *ibuf)
232{
233 return flush_imsg(ibuf);
234}
235
236const struct got_error *
237got_privsep_send_stop(int fd)
238{
239 const struct got_error *err = NULL((void *)0);
240 struct imsgbuf ibuf;
241
242 imsg_init(&ibuf, fd);
243
244 if (imsg_compose(&ibuf, GOT_IMSG_STOP, 0, 0, -1, NULL((void *)0), 0) == -1)
245 return got_error_from_errno("imsg_compose STOP");
246
247 err = flush_imsg(&ibuf);
248 imsg_clear(&ibuf);
249 return err;
250}
251
252const struct got_error *
253got_privsep_send_obj_req(struct imsgbuf *ibuf, int fd)
254{
255 if (imsg_compose(ibuf, GOT_IMSG_OBJECT_REQUEST, 0, 0, fd, NULL((void *)0), 0)
256 == -1)
257 return got_error_from_errno("imsg_compose OBJECT_REQUEST");
258
259 return flush_imsg(ibuf);
260}
261
262const struct got_error *
263got_privsep_send_raw_obj_req(struct imsgbuf *ibuf, int fd)
264{
265 if (imsg_compose(ibuf, GOT_IMSG_RAW_OBJECT_REQUEST, 0, 0, fd, NULL((void *)0), 0)
266 == -1)
267 return got_error_from_errno("imsg_compose RAW_OBJECT_REQUEST");
268
269 return flush_imsg(ibuf);
270}
271
272const struct got_error *
273got_privsep_send_raw_obj_outfd(struct imsgbuf *ibuf, int outfd)
274{
275 const struct got_error *err = NULL((void *)0);
276
277 if (imsg_compose(ibuf, GOT_IMSG_RAW_OBJECT_OUTFD, 0, 0, outfd, NULL((void *)0), 0)
278 == -1) {
279 err = got_error_from_errno("imsg_compose RAW_OBJECT_OUTFD");
280 close(outfd);
281 return err;
282 }
283
284 return flush_imsg(ibuf);
285}
286
287const struct got_error *
288got_privsep_send_raw_obj(struct imsgbuf *ibuf, off_t size, size_t hdrlen,
289 uint8_t *data)
290{
291 const struct got_error *err = NULL((void *)0);
292 struct got_imsg_raw_obj iobj;
293 size_t len = sizeof(iobj);
294 struct ibuf *wbuf;
295
296 iobj.hdrlen = hdrlen;
297 iobj.size = size;
298
299 if (data && size <= GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX(16384 - sizeof(struct imsg_hdr) - sizeof(struct got_imsg_raw_obj
)))
300 len += (size_t)size;
301
302 wbuf = imsg_create(ibuf, GOT_IMSG_RAW_OBJECT, 0, 0, len);
303 if (wbuf == NULL((void *)0)) {
304 err = got_error_from_errno("imsg_create RAW_OBJECT");
305 return err;
306 }
307
308 if (imsg_add(wbuf, &iobj, sizeof(iobj)) == -1) {
309 err = got_error_from_errno("imsg_add RAW_OBJECT");
310 ibuf_free(wbuf);
311 return err;
312 }
313
314 if (data && size <= GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX(16384 - sizeof(struct imsg_hdr) - sizeof(struct got_imsg_raw_obj
))) {
315 if (imsg_add(wbuf, data, size) == -1) {
316 err = got_error_from_errno("imsg_add RAW_OBJECT");
317 ibuf_free(wbuf);
318 return err;
319 }
320 }
321
322 wbuf->fd = -1;
323 imsg_close(ibuf, wbuf);
324
325 return flush_imsg(ibuf);
326}
327
328const struct got_error *
329got_privsep_recv_raw_obj(uint8_t **outbuf, off_t *size, size_t *hdrlen,
330 struct imsgbuf *ibuf)
331{
332 const struct got_error *err = NULL((void *)0);
333 struct imsg imsg;
334 struct got_imsg_raw_obj *iobj;
335 size_t datalen;
336
337 *outbuf = NULL((void *)0);
338
339 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
340 if (err)
341 return err;
342
343 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
344
345 switch (imsg.hdr.type) {
346 case GOT_IMSG_RAW_OBJECT:
347 if (datalen < sizeof(*iobj)) {
348 err = got_error(GOT_ERR_PRIVSEP_LEN36);
349 break;
350 }
351 iobj = imsg.data;
352 *size = iobj->size;
353 *hdrlen = iobj->hdrlen;
354
355 if (datalen == sizeof(*iobj)) {
356 /* Data has been written to file descriptor. */
357 break;
358 }
359
360 if (*size > GOT_PRIVSEP_INLINE_OBJECT_DATA_MAX(16384 - sizeof(struct imsg_hdr) - sizeof(struct got_imsg_raw_obj
))) {
361 err = got_error(GOT_ERR_PRIVSEP_LEN36);
362 break;
363 }
364
365 *outbuf = malloc(*size);
366 if (*outbuf == NULL((void *)0)) {
367 err = got_error_from_errno("malloc");
368 break;
369 }
370 memcpy(*outbuf, imsg.data + sizeof(*iobj), *size);
371 break;
372 default:
373 err = got_error(GOT_ERR_PRIVSEP_MSG39);
374 break;
375 }
376
377 imsg_free(&imsg);
378
379 return err;
380}
381
382const struct got_error *
383got_privsep_send_commit_req(struct imsgbuf *ibuf, int fd,
384 struct got_object_id *id, int pack_idx)
385{
386 const struct got_error *err = NULL((void *)0);
387 struct got_imsg_packed_object iobj, *iobjp;
388 size_t len;
389
390 if (id) { /* commit is packed */
391 iobj.idx = pack_idx;
392 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
393 iobjp = &iobj;
394 len = sizeof(iobj);
395 } else {
396 iobjp = NULL((void *)0);
397 len = 0;
398 }
399
400 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_REQUEST, 0, 0, fd, iobjp, len)
401 == -1) {
402 err = got_error_from_errno("imsg_compose COMMIT_REQUEST");
403 close(fd);
404 return err;
405 }
406
407 return flush_imsg(ibuf);
408}
409
410const struct got_error *
411got_privsep_send_tree_req(struct imsgbuf *ibuf, int fd,
412 struct got_object_id *id, int pack_idx)
413{
414 const struct got_error *err = NULL((void *)0);
415 struct ibuf *wbuf;
416 size_t len = id ? sizeof(struct got_imsg_packed_object) : 0;
417
418 wbuf = imsg_create(ibuf, GOT_IMSG_TREE_REQUEST, 0, 0, len);
419 if (wbuf == NULL((void *)0))
420 return got_error_from_errno("imsg_create TREE_REQUEST");
421
422 if (id) { /* tree is packed */
423 if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH20) == -1) {
424 err = got_error_from_errno("imsg_add TREE_ENTRY");
425 ibuf_free(wbuf);
426 return err;
427 }
428
429 if (imsg_add(wbuf, &pack_idx, sizeof(pack_idx)) == -1) {
430 err = got_error_from_errno("imsg_add TREE_ENTRY");
431 ibuf_free(wbuf);
432 return err;
433 }
434 }
435
436 wbuf->fd = fd;
437 imsg_close(ibuf, wbuf);
438
439 return flush_imsg(ibuf);
440}
441
442const struct got_error *
443got_privsep_send_tag_req(struct imsgbuf *ibuf, int fd,
444 struct got_object_id *id, int pack_idx)
445{
446 struct got_imsg_packed_object iobj, *iobjp;
447 size_t len;
448
449 if (id) { /* tag is packed */
450 iobj.idx = pack_idx;
451 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
452 iobjp = &iobj;
453 len = sizeof(iobj);
454 } else {
455 iobjp = NULL((void *)0);
456 len = 0;
457 }
458
459 if (imsg_compose(ibuf, GOT_IMSG_TAG_REQUEST, 0, 0, fd, iobjp, len)
460 == -1)
461 return got_error_from_errno("imsg_compose TAG_REQUEST");
462
463 return flush_imsg(ibuf);
464}
465
466const struct got_error *
467got_privsep_send_blob_req(struct imsgbuf *ibuf, int infd,
468 struct got_object_id *id, int pack_idx)
469{
470 const struct got_error *err = NULL((void *)0);
471 struct got_imsg_packed_object iobj, *iobjp;
472 size_t len;
473
474 if (id) { /* blob is packed */
475 iobj.idx = pack_idx;
476 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
477 iobjp = &iobj;
478 len = sizeof(iobj);
479 } else {
480 iobjp = NULL((void *)0);
481 len = 0;
482 }
483
484 if (imsg_compose(ibuf, GOT_IMSG_BLOB_REQUEST, 0, 0, infd, iobjp, len)
485 == -1) {
486 err = got_error_from_errno("imsg_compose BLOB_REQUEST");
487 close(infd);
488 return err;
489 }
490
491 return flush_imsg(ibuf);
492}
493
494const struct got_error *
495got_privsep_send_blob_outfd(struct imsgbuf *ibuf, int outfd)
496{
497 const struct got_error *err = NULL((void *)0);
498
499 if (imsg_compose(ibuf, GOT_IMSG_BLOB_OUTFD, 0, 0, outfd, NULL((void *)0), 0)
500 == -1) {
501 err = got_error_from_errno("imsg_compose BLOB_OUTFD");
502 close(outfd);
503 return err;
504 }
505
506 return flush_imsg(ibuf);
507}
508
509static const struct got_error *
510send_fd(struct imsgbuf *ibuf, int imsg_code, int fd)
511{
512 const struct got_error *err = NULL((void *)0);
513
514 if (imsg_compose(ibuf, imsg_code, 0, 0, fd, NULL((void *)0), 0) == -1) {
515 err = got_error_from_errno("imsg_compose TMPFD");
516 close(fd);
517 return err;
518 }
519
520 return flush_imsg(ibuf);
521}
522
523const struct got_error *
524got_privsep_send_tmpfd(struct imsgbuf *ibuf, int fd)
525{
526 return send_fd(ibuf, GOT_IMSG_TMPFD, fd);
527}
528
529const struct got_error *
530got_privsep_send_obj(struct imsgbuf *ibuf, struct got_object *obj)
531{
532 struct got_imsg_object iobj;
533
534 memcpy(iobj.id, obj->id.sha1, sizeof(iobj.id));
535 iobj.type = obj->type;
536 iobj.flags = obj->flags;
537 iobj.hdrlen = obj->hdrlen;
538 iobj.size = obj->size;
539 if (iobj.flags & GOT_OBJ_FLAG_PACKED0x01) {
540 iobj.pack_offset = obj->pack_offset;
541 iobj.pack_idx = obj->pack_idx;
542 }
543
544 if (imsg_compose(ibuf, GOT_IMSG_OBJECT, 0, 0, -1, &iobj, sizeof(iobj))
545 == -1)
546 return got_error_from_errno("imsg_compose OBJECT");
547
548 return flush_imsg(ibuf);
549}
550
551const struct got_error *
552got_privsep_send_fetch_req(struct imsgbuf *ibuf, int fd,
553 struct got_pathlist_head *have_refs, int fetch_all_branches,
554 struct got_pathlist_head *wanted_branches,
555 struct got_pathlist_head *wanted_refs, int list_refs_only, int verbosity)
556{
557 const struct got_error *err = NULL((void *)0);
558 struct ibuf *wbuf;
559 size_t len;
560 struct got_pathlist_entry *pe;
561 struct got_imsg_fetch_request fetchreq;
562
563 memset(&fetchreq, 0, sizeof(fetchreq));
564 fetchreq.fetch_all_branches = fetch_all_branches;
565 fetchreq.list_refs_only = list_refs_only;
566 fetchreq.verbosity = verbosity;
567 TAILQ_FOREACH(pe, have_refs, entry)for((pe) = ((have_refs)->tqh_first); (pe) != ((void *)0); (
pe) = ((pe)->entry.tqe_next))
568 fetchreq.n_have_refs++;
569 TAILQ_FOREACH(pe, wanted_branches, entry)for((pe) = ((wanted_branches)->tqh_first); (pe) != ((void *
)0); (pe) = ((pe)->entry.tqe_next))
570 fetchreq.n_wanted_branches++;
571 TAILQ_FOREACH(pe, wanted_refs, entry)for((pe) = ((wanted_refs)->tqh_first); (pe) != ((void *)0)
; (pe) = ((pe)->entry.tqe_next))
572 fetchreq.n_wanted_refs++;
573 len = sizeof(struct got_imsg_fetch_request);
574 if (len >= MAX_IMSGSIZE16384 - IMSG_HEADER_SIZEsizeof(struct imsg_hdr)) {
575 close(fd);
576 return got_error(GOT_ERR_NO_SPACE9);
577 }
578
579 if (imsg_compose(ibuf, GOT_IMSG_FETCH_REQUEST, 0, 0, fd,
580 &fetchreq, sizeof(fetchreq)) == -1)
581 return got_error_from_errno(
582 "imsg_compose FETCH_SERVER_PROGRESS");
583
584 err = flush_imsg(ibuf);
585 if (err) {
586 close(fd);
587 return err;
588 }
589 fd = -1;
590
591 TAILQ_FOREACH(pe, have_refs, entry)for((pe) = ((have_refs)->tqh_first); (pe) != ((void *)0); (
pe) = ((pe)->entry.tqe_next)) {
592 const char *name = pe->path;
593 size_t name_len = pe->path_len;
594 struct got_object_id *id = pe->data;
595
596 len = sizeof(struct got_imsg_fetch_have_ref) + name_len;
597 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_HAVE_REF, 0, 0, len);
598 if (wbuf == NULL((void *)0))
599 return got_error_from_errno("imsg_create FETCH_HAVE_REF");
600
601 /* Keep in sync with struct got_imsg_fetch_have_ref! */
602 if (imsg_add(wbuf, id->sha1, sizeof(id->sha1)) == -1) {
603 err = got_error_from_errno("imsg_add FETCH_HAVE_REF");
604 ibuf_free(wbuf);
605 return err;
606 }
607 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1) {
608 err = got_error_from_errno("imsg_add FETCH_HAVE_REF");
609 ibuf_free(wbuf);
610 return err;
611 }
612 if (imsg_add(wbuf, name, name_len) == -1) {
613 err = got_error_from_errno("imsg_add FETCH_HAVE_REF");
614 ibuf_free(wbuf);
615 return err;
616 }
617
618 wbuf->fd = -1;
619 imsg_close(ibuf, wbuf);
620 err = flush_imsg(ibuf);
621 if (err)
622 return err;
623 }
624
625 TAILQ_FOREACH(pe, wanted_branches, entry)for((pe) = ((wanted_branches)->tqh_first); (pe) != ((void *
)0); (pe) = ((pe)->entry.tqe_next)) {
626 const char *name = pe->path;
627 size_t name_len = pe->path_len;
628
629 len = sizeof(struct got_imsg_fetch_wanted_branch) + name_len;
630 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_WANTED_BRANCH, 0, 0,
631 len);
632 if (wbuf == NULL((void *)0))
633 return got_error_from_errno(
634 "imsg_create FETCH_WANTED_BRANCH");
635
636 /* Keep in sync with struct got_imsg_fetch_wanted_branch! */
637 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1) {
638 err = got_error_from_errno(
639 "imsg_add FETCH_WANTED_BRANCH");
640 ibuf_free(wbuf);
641 return err;
642 }
643 if (imsg_add(wbuf, name, name_len) == -1) {
644 err = got_error_from_errno(
645 "imsg_add FETCH_WANTED_BRANCH");
646 ibuf_free(wbuf);
647 return err;
648 }
649
650 wbuf->fd = -1;
651 imsg_close(ibuf, wbuf);
652 err = flush_imsg(ibuf);
653 if (err)
654 return err;
655 }
656
657 TAILQ_FOREACH(pe, wanted_refs, entry)for((pe) = ((wanted_refs)->tqh_first); (pe) != ((void *)0)
; (pe) = ((pe)->entry.tqe_next)) {
658 const char *name = pe->path;
659 size_t name_len = pe->path_len;
660
661 len = sizeof(struct got_imsg_fetch_wanted_ref) + name_len;
662 wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_WANTED_REF, 0, 0,
663 len);
664 if (wbuf == NULL((void *)0))
665 return got_error_from_errno(
666 "imsg_create FETCH_WANTED_REF");
667
668 /* Keep in sync with struct got_imsg_fetch_wanted_ref! */
669 if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1) {
670 err = got_error_from_errno(
671 "imsg_add FETCH_WANTED_REF");
672 ibuf_free(wbuf);
673 return err;
674 }
675 if (imsg_add(wbuf, name, name_len) == -1) {
676 err = got_error_from_errno(
677 "imsg_add FETCH_WANTED_REF");
678 ibuf_free(wbuf);
679 return err;
680 }
681
682 wbuf->fd = -1;
683 imsg_close(ibuf, wbuf);
684 err = flush_imsg(ibuf);
685 if (err)
686 return err;
687 }
688
689
690 return NULL((void *)0);
691
692}
693
694const struct got_error *
695got_privsep_send_fetch_outfd(struct imsgbuf *ibuf, int fd)
696{
697 return send_fd(ibuf, GOT_IMSG_FETCH_OUTFD, fd);
698}
699
700const struct got_error *
701got_privsep_recv_fetch_progress(int *done, struct got_object_id **id,
702 char **refname, struct got_pathlist_head *symrefs, char **server_progress,
703 off_t *packfile_size, uint8_t *pack_sha1, struct imsgbuf *ibuf)
704{
705 const struct got_error *err = NULL((void *)0);
706 struct imsg imsg;
707 size_t datalen;
708 struct got_imsg_fetch_symrefs *isymrefs = NULL((void *)0);
709 size_t n, remain;
710 off_t off;
711 int i;
712
713 *done = 0;
714 *id = NULL((void *)0);
715 *refname = NULL((void *)0);
716 *server_progress = NULL((void *)0);
717 *packfile_size = 0;
718 memset(pack_sha1, 0, SHA1_DIGEST_LENGTH20);
719
720 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
721 if (err)
722 return err;
723
724 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
725 switch (imsg.hdr.type) {
726 case GOT_IMSG_ERROR:
727 if (datalen < sizeof(struct got_imsg_error)) {
728 err = got_error(GOT_ERR_PRIVSEP_LEN36);
729 break;
730 }
731 err = recv_imsg_error(&imsg, datalen);
732 break;
733 case GOT_IMSG_FETCH_SYMREFS:
734 if (datalen < sizeof(*isymrefs)) {
735 err = got_error(GOT_ERR_PRIVSEP_LEN36);
736 break;
737 }
738 if (isymrefs != NULL((void *)0)) {
739 err = got_error(GOT_ERR_PRIVSEP_MSG39);
740 break;
741 }
742 isymrefs = (struct got_imsg_fetch_symrefs *)imsg.data;
743 off = sizeof(*isymrefs);
744 remain = datalen - off;
745 for (n = 0; n < isymrefs->nsymrefs; n++) {
746 struct got_imsg_fetch_symref *s;
747 char *name, *target;
748 if (remain < sizeof(struct got_imsg_fetch_symref)) {
749 err = got_error(GOT_ERR_PRIVSEP_LEN36);
750 goto done;
751 }
752 s = (struct got_imsg_fetch_symref *)(imsg.data + off);
753 off += sizeof(*s);
754 remain -= sizeof(*s);
755 if (remain < s->name_len) {
756 err = got_error(GOT_ERR_PRIVSEP_LEN36);
757 goto done;
758 }
759 name = strndup(imsg.data + off, s->name_len);
760 if (name == NULL((void *)0)) {
761 err = got_error_from_errno("strndup");
762 goto done;
763 }
764 off += s->name_len;
765 remain -= s->name_len;
766 if (remain < s->target_len) {
767 err = got_error(GOT_ERR_PRIVSEP_LEN36);
768 free(name);
769 goto done;
770 }
771 target = strndup(imsg.data + off, s->target_len);
772 if (target == NULL((void *)0)) {
773 err = got_error_from_errno("strndup");
774 free(name);
775 goto done;
776 }
777 off += s->target_len;
778 remain -= s->target_len;
779 err = got_pathlist_append(symrefs, name, target);
780 if (err) {
781 free(name);
782 free(target);
783 goto done;
784 }
785 }
786 break;
787 case GOT_IMSG_FETCH_REF:
788 if (datalen <= SHA1_DIGEST_LENGTH20) {
789 err = got_error(GOT_ERR_PRIVSEP_MSG39);
790 break;
791 }
792 *id = malloc(sizeof(**id));
793 if (*id == NULL((void *)0)) {
794 err = got_error_from_errno("malloc");
795 break;
796 }
797 memcpy((*id)->sha1, imsg.data, SHA1_DIGEST_LENGTH20);
798 *refname = strndup(imsg.data + SHA1_DIGEST_LENGTH20,
799 datalen - SHA1_DIGEST_LENGTH20);
800 if (*refname == NULL((void *)0)) {
801 err = got_error_from_errno("strndup");
802 break;
803 }
804 break;
805 case GOT_IMSG_FETCH_SERVER_PROGRESS:
806 if (datalen == 0) {
807 err = got_error(GOT_ERR_PRIVSEP_LEN36);
808 break;
809 }
810 *server_progress = strndup(imsg.data, datalen);
811 if (*server_progress == NULL((void *)0)) {
812 err = got_error_from_errno("strndup");
813 break;
814 }
815 for (i = 0; i < datalen; i++) {
816 if (!isprint((unsigned char)(*server_progress)[i]) &&
817 !isspace((unsigned char)(*server_progress)[i])) {
818 err = got_error(GOT_ERR_PRIVSEP_MSG39);
819 free(*server_progress);
820 *server_progress = NULL((void *)0);
821 goto done;
822 }
823 }
824 break;
825 case GOT_IMSG_FETCH_DOWNLOAD_PROGRESS:
826 if (datalen < sizeof(*packfile_size)) {
827 err = got_error(GOT_ERR_PRIVSEP_MSG39);
828 break;
829 }
830 memcpy(packfile_size, imsg.data, sizeof(*packfile_size));
831 break;
832 case GOT_IMSG_FETCH_DONE:
833 if (datalen != SHA1_DIGEST_LENGTH20) {
834 err = got_error(GOT_ERR_PRIVSEP_MSG39);
835 break;
836 }
837 memcpy(pack_sha1, imsg.data, SHA1_DIGEST_LENGTH20);
838 *done = 1;
839 break;
840 default:
841 err = got_error(GOT_ERR_PRIVSEP_MSG39);
842 break;
843 }
844done:
845 if (err) {
846 free(*id);
847 *id = NULL((void *)0);
848 free(*refname);
849 *refname = NULL((void *)0);
850 }
851 imsg_free(&imsg);
852 return err;
853}
854
855const struct got_error *
856got_privsep_send_index_pack_req(struct imsgbuf *ibuf, uint8_t *pack_sha1,
857 int fd)
858{
859 const struct got_error *err = NULL((void *)0);
860
861 /* Keep in sync with struct got_imsg_index_pack_request */
862 if (imsg_compose(ibuf, GOT_IMSG_IDXPACK_REQUEST, 0, 0, fd,
863 pack_sha1, SHA1_DIGEST_LENGTH20) == -1) {
864 err = got_error_from_errno("imsg_compose INDEX_REQUEST");
865 close(fd);
866 return err;
867 }
868 return flush_imsg(ibuf);
869}
870
871const struct got_error *
872got_privsep_send_index_pack_outfd(struct imsgbuf *ibuf, int fd)
873{
874 return send_fd(ibuf, GOT_IMSG_IDXPACK_OUTFD, fd);
875}
876
877const struct got_error *
878got_privsep_recv_index_progress(int *done, int *nobj_total,
879 int *nobj_indexed, int *nobj_loose, int *nobj_resolved,
880 struct imsgbuf *ibuf)
881{
882 const struct got_error *err = NULL((void *)0);
883 struct imsg imsg;
884 struct got_imsg_index_pack_progress *iprogress;
885 size_t datalen;
886
887 *done = 0;
888 *nobj_total = 0;
889 *nobj_indexed = 0;
890 *nobj_resolved = 0;
891
892 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
893 if (err)
894 return err;
895
896 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
897 switch (imsg.hdr.type) {
898 case GOT_IMSG_ERROR:
899 if (datalen < sizeof(struct got_imsg_error)) {
900 err = got_error(GOT_ERR_PRIVSEP_LEN36);
901 break;
902 }
903 err = recv_imsg_error(&imsg, datalen);
904 break;
905 case GOT_IMSG_IDXPACK_PROGRESS:
906 if (datalen < sizeof(*iprogress)) {
907 err = got_error(GOT_ERR_PRIVSEP_LEN36);
908 break;
909 }
910 iprogress = (struct got_imsg_index_pack_progress *)imsg.data;
911 *nobj_total = iprogress->nobj_total;
912 *nobj_indexed = iprogress->nobj_indexed;
913 *nobj_loose = iprogress->nobj_loose;
914 *nobj_resolved = iprogress->nobj_resolved;
915 break;
916 case GOT_IMSG_IDXPACK_DONE:
917 if (datalen != 0) {
918 err = got_error(GOT_ERR_PRIVSEP_LEN36);
919 break;
920 }
921 *done = 1;
922 break;
923 default:
924 err = got_error(GOT_ERR_PRIVSEP_MSG39);
925 break;
926 }
927
928 imsg_free(&imsg);
929 return err;
930}
931
932const struct got_error *
933got_privsep_get_imsg_obj(struct got_object **obj, struct imsg *imsg,
934 struct imsgbuf *ibuf)
935{
936 const struct got_error *err = NULL((void *)0);
937 struct got_imsg_object *iobj;
938 size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
939
940 if (datalen != sizeof(*iobj))
941 return got_error(GOT_ERR_PRIVSEP_LEN36);
942 iobj = imsg->data;
943
944 *obj = calloc(1, sizeof(**obj));
945 if (*obj == NULL((void *)0))
946 return got_error_from_errno("calloc");
947
948 memcpy((*obj)->id.sha1, iobj->id, SHA1_DIGEST_LENGTH20);
949 (*obj)->type = iobj->type;
950 (*obj)->flags = iobj->flags;
951 (*obj)->hdrlen = iobj->hdrlen;
952 (*obj)->size = iobj->size;
953 /* path_packfile is handled by caller */
954 if (iobj->flags & GOT_OBJ_FLAG_PACKED0x01) {
955 (*obj)->pack_offset = iobj->pack_offset;
956 (*obj)->pack_idx = iobj->pack_idx;
957 }
958
959 return err;
960}
961
962const struct got_error *
963got_privsep_recv_obj(struct got_object **obj, struct imsgbuf *ibuf)
964{
965 const struct got_error *err = NULL((void *)0);
966 struct imsg imsg;
967 const size_t min_datalen =
968 MIN(sizeof(struct got_imsg_error), sizeof(struct got_imsg_object))((sizeof(struct got_imsg_error)) < (sizeof(struct got_imsg_object
)) ? (sizeof(struct got_imsg_error)) : (sizeof(struct got_imsg_object
)));
969
970 *obj = NULL((void *)0);
971
972 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
973 if (err)
974 return err;
975
976 switch (imsg.hdr.type) {
977 case GOT_IMSG_OBJECT:
978 err = got_privsep_get_imsg_obj(obj, &imsg, ibuf);
979 break;
980 default:
981 err = got_error(GOT_ERR_PRIVSEP_MSG39);
982 break;
983 }
984
985 imsg_free(&imsg);
986
987 return err;
988}
989
990static const struct got_error *
991send_commit_logmsg(struct imsgbuf *ibuf, struct got_commit_object *commit,
992 size_t logmsg_len)
993{
994 const struct got_error *err = NULL((void *)0);
995 size_t offset, remain;
996
997 offset = 0;
998 remain = logmsg_len;
999 while (remain > 0) {
1000 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain)((16384 - sizeof(struct imsg_hdr)) < (remain) ? (16384 - sizeof
(struct imsg_hdr)) : (remain));
1001
1002 if (imsg_compose(ibuf, GOT_IMSG_COMMIT_LOGMSG, 0, 0, -1,
1003 commit->logmsg + offset, n) == -1) {
1004 err = got_error_from_errno("imsg_compose "
1005 "COMMIT_LOGMSG");
1006 break;
1007 }
1008
1009 err = flush_imsg(ibuf);
1010 if (err)
1011 break;
1012
1013 offset += n;
1014 remain -= n;
1015 }
1016
1017 return err;
1018}
1019
1020const struct got_error *
1021got_privsep_send_commit(struct imsgbuf *ibuf, struct got_commit_object *commit)
1022{
1023 const struct got_error *err = NULL((void *)0);
1024 struct got_imsg_commit_object *icommit;
1025 uint8_t *buf;
1026 size_t len, total;
1027 struct got_object_qid *qid;
1028 size_t author_len = strlen(commit->author);
1029 size_t committer_len = strlen(commit->committer);
1030 size_t logmsg_len = strlen(commit->logmsg);
1031
1032 total = sizeof(*icommit) + author_len + committer_len +
1033 commit->nparents * SHA1_DIGEST_LENGTH20;
1034
1035 buf = malloc(total);
1036 if (buf == NULL((void *)0))
1037 return got_error_from_errno("malloc");
1038
1039 icommit = (struct got_imsg_commit_object *)buf;
1040 memcpy(icommit->tree_id, commit->tree_id->sha1,
1041 sizeof(icommit->tree_id));
1042 icommit->author_len = author_len;
1043 icommit->author_time = commit->author_time;
1044 icommit->author_gmtoff = commit->author_gmtoff;
1045 icommit->committer_len = committer_len;
1046 icommit->committer_time = commit->committer_time;
1047 icommit->committer_gmtoff = commit->committer_gmtoff;
1048 icommit->logmsg_len = logmsg_len;
1049 icommit->nparents = commit->nparents;
1050
1051 len = sizeof(*icommit);
1052 memcpy(buf + len, commit->author, author_len);
1053 len += author_len;
1054 memcpy(buf + len, commit->committer, committer_len);
1055 len += committer_len;
1056 SIMPLEQ_FOREACH(qid, &commit->parent_ids, entry)for((qid) = ((&commit->parent_ids)->sqh_first); (qid
) != ((void *)0); (qid) = ((qid)->entry.sqe_next)) {
1057 memcpy(buf + len, qid->id, SHA1_DIGEST_LENGTH20);
1058 len += SHA1_DIGEST_LENGTH20;
1059 }
1060
1061 if (imsg_compose(ibuf, GOT_IMSG_COMMIT, 0, 0, -1, buf, len) == -1) {
1062 err = got_error_from_errno("imsg_compose COMMIT");
1063 goto done;
1064 }
1065
1066 if (logmsg_len == 0 ||
1067 logmsg_len + len > MAX_IMSGSIZE16384 - IMSG_HEADER_SIZEsizeof(struct imsg_hdr)) {
1068 err = flush_imsg(ibuf);
1069 if (err)
1070 goto done;
1071 }
1072 err = send_commit_logmsg(ibuf, commit, logmsg_len);
1073done:
1074 free(buf);
1075 return err;
1076}
1077
1078static const struct got_error *
1079get_commit_from_imsg(struct got_commit_object **commit,
1080 struct imsg *imsg, size_t datalen, struct imsgbuf *ibuf)
1081{
1082 const struct got_error *err = NULL((void *)0);
1083 struct got_imsg_commit_object *icommit;
1084 size_t len = 0;
1085 int i;
1086
1087 if (datalen < sizeof(*icommit))
1088 return got_error(GOT_ERR_PRIVSEP_LEN36);
1089
1090 icommit = imsg->data;
1091 if (datalen != sizeof(*icommit) + icommit->author_len +
1092 icommit->committer_len +
1093 icommit->nparents * SHA1_DIGEST_LENGTH20)
1094 return got_error(GOT_ERR_PRIVSEP_LEN36);
1095
1096 if (icommit->nparents < 0)
1097 return got_error(GOT_ERR_PRIVSEP_LEN36);
1098
1099 len += sizeof(*icommit);
1100
1101 *commit = got_object_commit_alloc_partial();
1102 if (*commit == NULL((void *)0))
1103 return got_error_from_errno(
1104 "got_object_commit_alloc_partial");
1105
1106 memcpy((*commit)->tree_id->sha1, icommit->tree_id,
1107 SHA1_DIGEST_LENGTH20);
1108 (*commit)->author_time = icommit->author_time;
1109 (*commit)->author_gmtoff = icommit->author_gmtoff;
1110 (*commit)->committer_time = icommit->committer_time;
1111 (*commit)->committer_gmtoff = icommit->committer_gmtoff;
1112
1113 if (icommit->author_len == 0) {
1114 (*commit)->author = strdup("");
1115 if ((*commit)->author == NULL((void *)0)) {
1116 err = got_error_from_errno("strdup");
1117 goto done;
1118 }
1119 } else {
1120 (*commit)->author = malloc(icommit->author_len + 1);
1121 if ((*commit)->author == NULL((void *)0)) {
1122 err = got_error_from_errno("malloc");
1123 goto done;
1124 }
1125 memcpy((*commit)->author, imsg->data + len,
1126 icommit->author_len);
1127 (*commit)->author[icommit->author_len] = '\0';
1128 }
1129 len += icommit->author_len;
1130
1131 if (icommit->committer_len == 0) {
1132 (*commit)->committer = strdup("");
1133 if ((*commit)->committer == NULL((void *)0)) {
1134 err = got_error_from_errno("strdup");
1135 goto done;
1136 }
1137 } else {
1138 (*commit)->committer =
1139 malloc(icommit->committer_len + 1);
1140 if ((*commit)->committer == NULL((void *)0)) {
1141 err = got_error_from_errno("malloc");
1142 goto done;
1143 }
1144 memcpy((*commit)->committer, imsg->data + len,
1145 icommit->committer_len);
1146 (*commit)->committer[icommit->committer_len] = '\0';
1147 }
1148 len += icommit->committer_len;
1149
1150 if (icommit->logmsg_len == 0) {
1151 (*commit)->logmsg = strdup("");
1152 if ((*commit)->logmsg == NULL((void *)0)) {
1153 err = got_error_from_errno("strdup");
1154 goto done;
1155 }
1156 } else {
1157 size_t offset = 0, remain = icommit->logmsg_len;
1158
1159 (*commit)->logmsg = malloc(icommit->logmsg_len + 1);
1160 if ((*commit)->logmsg == NULL((void *)0)) {
1161 err = got_error_from_errno("malloc");
1162 goto done;
1163 }
1164 while (remain > 0) {
1165 struct imsg imsg_log;
1166 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,((16384 - sizeof(struct imsg_hdr)) < (remain) ? (16384 - sizeof
(struct imsg_hdr)) : (remain))
1167 remain)((16384 - sizeof(struct imsg_hdr)) < (remain) ? (16384 - sizeof
(struct imsg_hdr)) : (remain));
1168
1169 err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
1170 if (err)
1171 goto done;
1172
1173 if (imsg_log.hdr.type != GOT_IMSG_COMMIT_LOGMSG) {
1174 err = got_error(GOT_ERR_PRIVSEP_MSG39);
1175 goto done;
1176 }
1177
1178 memcpy((*commit)->logmsg + offset,
1179 imsg_log.data, n);
1180 imsg_free(&imsg_log);
1181 offset += n;
1182 remain -= n;
1183 }
1184 (*commit)->logmsg[icommit->logmsg_len] = '\0';
1185 }
1186
1187 for (i = 0; i < icommit->nparents; i++) {
1188 struct got_object_qid *qid;
1189
1190 err = got_object_qid_alloc_partial(&qid);
1191 if (err)
1192 break;
1193 memcpy(qid->id, imsg->data + len +
1194 i * SHA1_DIGEST_LENGTH20, sizeof(*qid->id));
1195 SIMPLEQ_INSERT_TAIL(&(*commit)->parent_ids, qid, entry)do { (qid)->entry.sqe_next = ((void *)0); *(&(*commit)
->parent_ids)->sqh_last = (qid); (&(*commit)->parent_ids
)->sqh_last = &(qid)->entry.sqe_next; } while (0);
1196 (*commit)->nparents++;
1197 }
1198done:
1199 if (err) {
1200 got_object_commit_close(*commit);
1201 *commit = NULL((void *)0);
1202 }
1203 return err;
1204}
1205
1206const struct got_error *
1207got_privsep_recv_commit(struct got_commit_object **commit, struct imsgbuf *ibuf)
1208{
1209 const struct got_error *err = NULL((void *)0);
1210 struct imsg imsg;
1211 size_t datalen;
1212 const size_t min_datalen =
1213 MIN(sizeof(struct got_imsg_error),((sizeof(struct got_imsg_error)) < (sizeof(struct got_imsg_commit_object
)) ? (sizeof(struct got_imsg_error)) : (sizeof(struct got_imsg_commit_object
)))
1214 sizeof(struct got_imsg_commit_object))((sizeof(struct got_imsg_error)) < (sizeof(struct got_imsg_commit_object
)) ? (sizeof(struct got_imsg_error)) : (sizeof(struct got_imsg_commit_object
)));
1215
1216 *commit = NULL((void *)0);
1217
1218 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1219 if (err)
1220 return err;
1221
1222 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
1223
1224 switch (imsg.hdr.type) {
1225 case GOT_IMSG_COMMIT:
1226 err = get_commit_from_imsg(commit, &imsg, datalen, ibuf);
1227 break;
1228 default:
1229 err = got_error(GOT_ERR_PRIVSEP_MSG39);
1230 break;
1231 }
1232
1233 imsg_free(&imsg);
1234
1235 return err;
1236}
1237
1238const struct got_error *
1239got_privsep_send_tree(struct imsgbuf *ibuf, struct got_pathlist_head *entries,
1240 int nentries)
1241{
1242 const struct got_error *err = NULL((void *)0);
1243 struct got_imsg_tree_object itree;
1244 struct got_pathlist_entry *pe;
1245 size_t totlen;
1246 int nimsg; /* number of imsg queued in ibuf */
1247
1248 itree.nentries = nentries;
1249 if (imsg_compose(ibuf, GOT_IMSG_TREE, 0, 0, -1, &itree, sizeof(itree))
1250 == -1)
1251 return got_error_from_errno("imsg_compose TREE");
1252
1253 totlen = sizeof(itree);
1254 nimsg = 1;
1255 TAILQ_FOREACH(pe, entries, entry)for((pe) = ((entries)->tqh_first); (pe) != ((void *)0); (pe
) = ((pe)->entry.tqe_next)) {
1256 const char *name = pe->path;
1257 struct got_parsed_tree_entry *pte = pe->data;
1258 struct ibuf *wbuf;
1259 size_t namelen = strlen(name);
1260 size_t len = sizeof(struct got_imsg_tree_entry) + namelen;
1261
1262 if (len > MAX_IMSGSIZE16384)
1263 return got_error(GOT_ERR_NO_SPACE9);
1264
1265 nimsg++;
1266 if (totlen + len >= MAX_IMSGSIZE16384 - (IMSG_HEADER_SIZEsizeof(struct imsg_hdr) * nimsg)) {
1267 err = flush_imsg(ibuf);
1268 if (err)
1269 return err;
1270 nimsg = 0;
1271 }
1272
1273 wbuf = imsg_create(ibuf, GOT_IMSG_TREE_ENTRY, 0, 0, len);
1274 if (wbuf == NULL((void *)0))
1275 return got_error_from_errno("imsg_create TREE_ENTRY");
1276
1277 /* Keep in sync with struct got_imsg_tree_object definition! */
1278 if (imsg_add(wbuf, pte->id, SHA1_DIGEST_LENGTH20) == -1) {
1279 err = got_error_from_errno("imsg_add TREE_ENTRY");
1280 ibuf_free(wbuf);
1281 return err;
1282 }
1283 if (imsg_add(wbuf, &pte->mode, sizeof(pte->mode)) == -1) {
1284 err = got_error_from_errno("imsg_add TREE_ENTRY");
1285 ibuf_free(wbuf);
1286 return err;
1287 }
1288
1289 if (imsg_add(wbuf, name, namelen) == -1) {
1290 err = got_error_from_errno("imsg_add TREE_ENTRY");
1291 ibuf_free(wbuf);
1292 return err;
1293 }
1294
1295 wbuf->fd = -1;
1296 imsg_close(ibuf, wbuf);
1297
1298 totlen += len;
1299 }
1300
1301 return flush_imsg(ibuf);
1302}
1303
1304const struct got_error *
1305got_privsep_recv_tree(struct got_tree_object **tree, struct imsgbuf *ibuf)
1306{
1307 const struct got_error *err = NULL((void *)0);
1308 const size_t min_datalen =
1309 MIN(sizeof(struct got_imsg_error),((sizeof(struct got_imsg_error)) < (sizeof(struct got_imsg_tree_object
)) ? (sizeof(struct got_imsg_error)) : (sizeof(struct got_imsg_tree_object
)))
1310 sizeof(struct got_imsg_tree_object))((sizeof(struct got_imsg_error)) < (sizeof(struct got_imsg_tree_object
)) ? (sizeof(struct got_imsg_error)) : (sizeof(struct got_imsg_tree_object
)));
1311 struct got_imsg_tree_object *itree;
1312 int nentries = 0;
1313
1314 *tree = NULL((void *)0);
1315get_more:
1316 err = read_imsg(ibuf);
1317 if (err)
1318 goto done;
1319
1320 for (;;) {
1321 struct imsg imsg;
1322 size_t n;
1323 size_t datalen;
1324 struct got_imsg_tree_entry *ite;
1325 struct got_tree_entry *te = NULL((void *)0);
1326
1327 n = imsg_get(ibuf, &imsg);
1328 if (n == 0) {
1329 if (*tree && (*tree)->nentries != nentries)
1330 goto get_more;
1331 break;
1332 }
1333
1334 if (imsg.hdr.len < IMSG_HEADER_SIZEsizeof(struct imsg_hdr) + min_datalen) {
1335 imsg_free(&imsg);
1336 err = got_error(GOT_ERR_PRIVSEP_LEN36);
1337 break;
1338 }
1339
1340 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
1341
1342 switch (imsg.hdr.type) {
1343 case GOT_IMSG_ERROR:
1344 err = recv_imsg_error(&imsg, datalen);
1345 break;
1346 case GOT_IMSG_TREE:
1347 /* This message should only appear once. */
1348 if (*tree != NULL((void *)0)) {
1349 err = got_error(GOT_ERR_PRIVSEP_MSG39);
1350 break;
1351 }
1352 if (datalen != sizeof(*itree)) {
1353 err = got_error(GOT_ERR_PRIVSEP_LEN36);
1354 break;
1355 }
1356 itree = imsg.data;
1357 *tree = malloc(sizeof(**tree));
1358 if (*tree == NULL((void *)0)) {
1359 err = got_error_from_errno("malloc");
1360 break;
1361 }
1362 (*tree)->entries = calloc(itree->nentries,
1363 sizeof(struct got_tree_entry));
1364 if ((*tree)->entries == NULL((void *)0)) {
1365 err = got_error_from_errno("malloc");
1366 break;
1367 }
1368 (*tree)->nentries = itree->nentries;
1369 (*tree)->refcnt = 0;
1370 break;
1371 case GOT_IMSG_TREE_ENTRY:
1372 /* This message should be preceeded by GOT_IMSG_TREE. */
1373 if (*tree == NULL((void *)0)) {
1374 err = got_error(GOT_ERR_PRIVSEP_MSG39);
1375 break;
1376 }
1377 if (datalen < sizeof(*ite) || datalen > MAX_IMSGSIZE16384) {
1378 err = got_error(GOT_ERR_PRIVSEP_LEN36);
1379 break;
1380 }
1381
1382 /* Remaining data contains the entry's name. */
1383 datalen -= sizeof(*ite);
1384 if (datalen == 0 || datalen > MAX_IMSGSIZE16384) {
1385 err = got_error(GOT_ERR_PRIVSEP_LEN36);
1386 break;
1387 }
1388 ite = imsg.data;
1389
1390 if (datalen + 1 > sizeof(te->name)) {
1391 err = got_error(GOT_ERR_NO_SPACE9);
1392 break;
1393 }
1394 te = &(*tree)->entries[nentries];
1395 memcpy(te->name, imsg.data + sizeof(*ite), datalen);
1396 te->name[datalen] = '\0';
1397
1398 memcpy(te->id.sha1, ite->id, SHA1_DIGEST_LENGTH20);
1399 te->mode = ite->mode;
1400 te->idx = nentries;
1401 nentries++;
1402 break;
1403 default:
1404 err = got_error(GOT_ERR_PRIVSEP_MSG39);
1405 break;
1406 }
1407
1408 imsg_free(&imsg);
1409 if (err)
1410 break;
1411 }
1412done:
1413 if (*tree && (*tree)->nentries != nentries) {
1414 if (err == NULL((void *)0))
1415 err = got_error(GOT_ERR_PRIVSEP_LEN36);
1416 got_object_tree_close(*tree);
1417 *tree = NULL((void *)0);
1418 }
1419
1420 return err;
1421}
1422
1423const struct got_error *
1424got_privsep_send_blob(struct imsgbuf *ibuf, size_t size, size_t hdrlen,
1425 const uint8_t *data)
1426{
1427 struct got_imsg_blob iblob;
1428
1429 iblob.size = size;
1430 iblob.hdrlen = hdrlen;
1431
1432 if (data) {
1433 uint8_t *buf;
1434
1435 if (size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX(16384 - sizeof(struct imsg_hdr) - sizeof(struct got_imsg_blob
)))
1436 return got_error(GOT_ERR_NO_SPACE9);
1437
1438 buf = malloc(sizeof(iblob) + size);
1439 if (buf == NULL((void *)0))
1440 return got_error_from_errno("malloc");
1441
1442 memcpy(buf, &iblob, sizeof(iblob));
1443 memcpy(buf + sizeof(iblob), data, size);
1444 if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, buf,
1445 sizeof(iblob) + size) == -1) {
1446 free(buf);
1447 return got_error_from_errno("imsg_compose BLOB");
1448 }
1449 free(buf);
1450 } else {
1451 /* Data has already been written to file descriptor. */
1452 if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, &iblob,
1453 sizeof(iblob)) == -1)
1454 return got_error_from_errno("imsg_compose BLOB");
1455 }
1456
1457
1458 return flush_imsg(ibuf);
1459}
1460
1461const struct got_error *
1462got_privsep_recv_blob(uint8_t **outbuf, size_t *size, size_t *hdrlen,
1463 struct imsgbuf *ibuf)
1464{
1465 const struct got_error *err = NULL((void *)0);
1466 struct imsg imsg;
1467 struct got_imsg_blob *iblob;
1468 size_t datalen;
1469
1470 *outbuf = NULL((void *)0);
1471
1472 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
1473 if (err)
1474 return err;
1475
1476 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
1477
1478 switch (imsg.hdr.type) {
1479 case GOT_IMSG_BLOB:
1480 if (datalen < sizeof(*iblob)) {
1481 err = got_error(GOT_ERR_PRIVSEP_LEN36);
1482 break;
1483 }
1484 iblob = imsg.data;
1485 *size = iblob->size;
1486 *hdrlen = iblob->hdrlen;
1487
1488 if (datalen == sizeof(*iblob)) {
1489 /* Data has been written to file descriptor. */
1490 break;
1491 }
1492
1493 if (*size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX(16384 - sizeof(struct imsg_hdr) - sizeof(struct got_imsg_blob
))) {
1494 err = got_error(GOT_ERR_PRIVSEP_LEN36);
1495 break;
1496 }
1497
1498 *outbuf = malloc(*size);
1499 if (*outbuf == NULL((void *)0)) {
1500 err = got_error_from_errno("malloc");
1501 break;
1502 }
1503 memcpy(*outbuf, imsg.data + sizeof(*iblob), *size);
1504 break;
1505 default:
1506 err = got_error(GOT_ERR_PRIVSEP_MSG39);
1507 break;
1508 }
1509
1510 imsg_free(&imsg);
1511
1512 return err;
1513}
1514
1515static const struct got_error *
1516send_tagmsg(struct imsgbuf *ibuf, struct got_tag_object *tag, size_t tagmsg_len)
1517{
1518 const struct got_error *err = NULL((void *)0);
1519 size_t offset, remain;
1520
1521 offset = 0;
1522 remain = tagmsg_len;
1523 while (remain > 0) {
1524 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain)((16384 - sizeof(struct imsg_hdr)) < (remain) ? (16384 - sizeof
(struct imsg_hdr)) : (remain));
1525
1526 if (imsg_compose(ibuf, GOT_IMSG_TAG_TAGMSG, 0, 0, -1,
1527 tag->tagmsg + offset, n) == -1) {
1528 err = got_error_from_errno("imsg_compose TAG_TAGMSG");
1529 break;
1530 }
1531
1532 err = flush_imsg(ibuf);
1533 if (err)
1534 break;
1535
1536 offset += n;
1537 remain -= n;
1538 }
1539
1540 return err;
1541}
1542
1543const struct got_error *
1544got_privsep_send_tag(struct imsgbuf *ibuf, struct got_tag_object *tag)
1545{
1546 const struct got_error *err = NULL((void *)0);
1547 struct got_imsg_tag_object *itag;
1548 uint8_t *buf;
1549 size_t len, total;
1550 size_t tag_len = strlen(tag->tag);
1551 size_t tagger_len = strlen(tag->tagger);
1552 size_t tagmsg_len = strlen(tag->tagmsg);
1553
1554 total = sizeof(*itag) + tag_len + tagger_len + tagmsg_len;
1555
1556 buf = malloc(total);
1557 if (buf == NULL((void *)0))
1558 return got_error_from_errno("malloc");
1559
1560 itag = (struct got_imsg_tag_object *)buf;
1561 memcpy(itag->id, tag->id.sha1, sizeof(itag->id));
1562 itag->obj_type = tag->obj_type;
1563 itag->tag_len = tag_len;
1564 itag->tagger_len = tagger_len;
1565 itag->tagger_time = tag->tagger_time;
1566 itag->tagger_gmtoff = tag->tagger_gmtoff;
1567 itag->tagmsg_len = tagmsg_len;
1568
1569 len = sizeof(*itag);
1570 memcpy(buf + len, tag->tag, tag_len);
1571 len += tag_len;
1572 memcpy(buf + len, tag->tagger, tagger_len);
1573 len += tagger_len;
1574
1575 if (imsg_compose(ibuf, GOT_IMSG_TAG, 0, 0, -1, buf, len) == -1) {
1576 err = got_error_from_errno("imsg_compose TAG");
1577 goto done;
1578 }
1579
1580 if (tagmsg_len == 0 ||
1581 tagmsg_len + len > MAX_IMSGSIZE16384 - IMSG_HEADER_SIZEsizeof(struct imsg_hdr)) {
1582 err = flush_imsg(ibuf);
1583 if (err)
1584 goto done;
1585 }
1586 err = send_tagmsg(ibuf, tag, tagmsg_len);
1587done:
1588 free(buf);
1589 return err;
1590}
1591
1592const struct got_error *
1593got_privsep_recv_tag(struct got_tag_object **tag, struct imsgbuf *ibuf)
1594{
1595 const struct got_error *err = NULL((void *)0);
1596 struct imsg imsg;
1597 struct got_imsg_tag_object *itag;
1598 size_t len, datalen;
1599 const size_t min_datalen =
1600 MIN(sizeof(struct got_imsg_error),((sizeof(struct got_imsg_error)) < (sizeof(struct got_imsg_tag_object
)) ? (sizeof(struct got_imsg_error)) : (sizeof(struct got_imsg_tag_object
)))
1601 sizeof(struct got_imsg_tag_object))((sizeof(struct got_imsg_error)) < (sizeof(struct got_imsg_tag_object
)) ? (sizeof(struct got_imsg_error)) : (sizeof(struct got_imsg_tag_object
)));
1602
1603 *tag = NULL((void *)0);
1604
1605 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1606 if (err)
1607 return err;
1608
1609 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
1610 len = 0;
1611
1612 switch (imsg.hdr.type) {
1613 case GOT_IMSG_TAG:
1614 if (datalen < sizeof(*itag)) {
1615 err = got_error(GOT_ERR_PRIVSEP_LEN36);
1616 break;
1617 }
1618 itag = imsg.data;
1619 if (datalen != sizeof(*itag) + itag->tag_len +
1620 itag->tagger_len) {
1621 err = got_error(GOT_ERR_PRIVSEP_LEN36);
1622 break;
1623 }
1624 len += sizeof(*itag);
1625
1626 *tag = calloc(1, sizeof(**tag));
1627 if (*tag == NULL((void *)0)) {
1628 err = got_error_from_errno("calloc");
1629 break;
1630 }
1631
1632 memcpy((*tag)->id.sha1, itag->id, SHA1_DIGEST_LENGTH20);
1633
1634 if (itag->tag_len == 0) {
1635 (*tag)->tag = strdup("");
1636 if ((*tag)->tag == NULL((void *)0)) {
1637 err = got_error_from_errno("strdup");
1638 break;
1639 }
1640 } else {
1641 (*tag)->tag = malloc(itag->tag_len + 1);
1642 if ((*tag)->tag == NULL((void *)0)) {
1643 err = got_error_from_errno("malloc");
1644 break;
1645 }
1646 memcpy((*tag)->tag, imsg.data + len,
1647 itag->tag_len);
1648 (*tag)->tag[itag->tag_len] = '\0';
1649 }
1650 len += itag->tag_len;
1651
1652 (*tag)->obj_type = itag->obj_type;
1653 (*tag)->tagger_time = itag->tagger_time;
1654 (*tag)->tagger_gmtoff = itag->tagger_gmtoff;
1655
1656 if (itag->tagger_len == 0) {
1657 (*tag)->tagger = strdup("");
1658 if ((*tag)->tagger == NULL((void *)0)) {
1659 err = got_error_from_errno("strdup");
1660 break;
1661 }
1662 } else {
1663 (*tag)->tagger = malloc(itag->tagger_len + 1);
1664 if ((*tag)->tagger == NULL((void *)0)) {
1665 err = got_error_from_errno("malloc");
1666 break;
1667 }
1668 memcpy((*tag)->tagger, imsg.data + len,
1669 itag->tagger_len);
1670 (*tag)->tagger[itag->tagger_len] = '\0';
1671 }
1672 len += itag->tagger_len;
1673
1674 if (itag->tagmsg_len == 0) {
1675 (*tag)->tagmsg = strdup("");
1676 if ((*tag)->tagmsg == NULL((void *)0)) {
1677 err = got_error_from_errno("strdup");
1678 break;
1679 }
1680 } else {
1681 size_t offset = 0, remain = itag->tagmsg_len;
1682
1683 (*tag)->tagmsg = malloc(itag->tagmsg_len + 1);
1684 if ((*tag)->tagmsg == NULL((void *)0)) {
1685 err = got_error_from_errno("malloc");
1686 break;
1687 }
1688 while (remain > 0) {
1689 struct imsg imsg_log;
1690 size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,((16384 - sizeof(struct imsg_hdr)) < (remain) ? (16384 - sizeof
(struct imsg_hdr)) : (remain))
1691 remain)((16384 - sizeof(struct imsg_hdr)) < (remain) ? (16384 - sizeof
(struct imsg_hdr)) : (remain));
1692
1693 err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
1694 if (err)
1695 return err;
1696
1697 if (imsg_log.hdr.type != GOT_IMSG_TAG_TAGMSG)
1698 return got_error(GOT_ERR_PRIVSEP_MSG39);
1699
1700 memcpy((*tag)->tagmsg + offset, imsg_log.data,
1701 n);
1702 imsg_free(&imsg_log);
1703 offset += n;
1704 remain -= n;
1705 }
1706 (*tag)->tagmsg[itag->tagmsg_len] = '\0';
1707 }
1708
1709 break;
1710 default:
1711 err = got_error(GOT_ERR_PRIVSEP_MSG39);
1712 break;
1713 }
1714
1715 imsg_free(&imsg);
1716
1717 return err;
1718}
1719
1720const struct got_error *
1721got_privsep_init_pack_child(struct imsgbuf *ibuf, struct got_pack *pack,
1722 struct got_packidx *packidx)
1723{
1724 const struct got_error *err = NULL((void *)0);
1725 struct got_imsg_packidx ipackidx;
1726 struct got_imsg_pack ipack;
1727 int fd;
1728
1729 ipackidx.len = packidx->len;
1730 fd = dup(packidx->fd);
1731 if (fd == -1)
1732 return got_error_from_errno("dup");
1733
1734 if (imsg_compose(ibuf, GOT_IMSG_PACKIDX, 0, 0, fd, &ipackidx,
1735 sizeof(ipackidx)) == -1) {
1736 err = got_error_from_errno("imsg_compose PACKIDX");
1737 close(fd);
1738 return err;
1739 }
1740
1741 if (strlcpy(ipack.path_packfile, pack->path_packfile,
1742 sizeof(ipack.path_packfile)) >= sizeof(ipack.path_packfile))
1743 return got_error(GOT_ERR_NO_SPACE9);
1744 ipack.filesize = pack->filesize;
1745
1746 fd = dup(pack->fd);
1747 if (fd == -1)
1748 return got_error_from_errno("dup");
1749
1750 if (imsg_compose(ibuf, GOT_IMSG_PACK, 0, 0, fd, &ipack, sizeof(ipack))
1751 == -1) {
1752 err = got_error_from_errno("imsg_compose PACK");
1753 close(fd);
1754 return err;
1755 }
1756
1757 return flush_imsg(ibuf);
1758}
1759
1760const struct got_error *
1761got_privsep_send_packed_obj_req(struct imsgbuf *ibuf, int idx,
1762 struct got_object_id *id)
1763{
1764 struct got_imsg_packed_object iobj;
1765
1766 iobj.idx = idx;
1767 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
1768
1769 if (imsg_compose(ibuf, GOT_IMSG_PACKED_OBJECT_REQUEST, 0, 0, -1,
1770 &iobj, sizeof(iobj)) == -1)
1771 return got_error_from_errno("imsg_compose "
1772 "PACKED_OBJECT_REQUEST");
1773
1774 return flush_imsg(ibuf);
1775}
1776
1777const struct got_error *
1778got_privsep_send_packed_raw_obj_req(struct imsgbuf *ibuf, int idx,
1779 struct got_object_id *id)
1780{
1781 struct got_imsg_packed_object iobj;
1782
1783 iobj.idx = idx;
1784 memcpy(iobj.id, id->sha1, sizeof(iobj.id));
1785
1786 if (imsg_compose(ibuf, GOT_IMSG_PACKED_RAW_OBJECT_REQUEST, 0, 0, -1,
1787 &iobj, sizeof(iobj)) == -1)
1788 return got_error_from_errno("imsg_compose "
1789 "PACKED_OBJECT_REQUEST");
1790
1791 return flush_imsg(ibuf);
1792}
1793
1794const struct got_error *
1795got_privsep_send_gitconfig_parse_req(struct imsgbuf *ibuf, int fd)
1796{
1797 const struct got_error *err = NULL((void *)0);
1798
1799 if (imsg_compose(ibuf, GOT_IMSG_GITCONFIG_PARSE_REQUEST, 0, 0, fd,
1800 NULL((void *)0), 0) == -1) {
1801 err = got_error_from_errno("imsg_compose "
1802 "GITCONFIG_PARSE_REQUEST");
1803 close(fd);
1804 return err;
1805 }
1806
1807 return flush_imsg(ibuf);
1808}
1809
1810const struct got_error *
1811got_privsep_send_gitconfig_repository_format_version_req(struct imsgbuf *ibuf)
1812{
1813 if (imsg_compose(ibuf,
1814 GOT_IMSG_GITCONFIG_REPOSITORY_FORMAT_VERSION_REQUEST, 0, 0, -1,
1815 NULL((void *)0), 0) == -1)
1816 return got_error_from_errno("imsg_compose "
1817 "GITCONFIG_REPOSITORY_FORMAT_VERSION_REQUEST");
1818
1819 return flush_imsg(ibuf);
1820}
1821
1822const struct got_error *
1823got_privsep_send_gitconfig_repository_extensions_req(struct imsgbuf *ibuf)
1824{
1825 if (imsg_compose(ibuf,
1826 GOT_IMSG_GITCONFIG_REPOSITORY_EXTENSIONS_REQUEST, 0, 0, -1,
1827 NULL((void *)0), 0) == -1)
1828 return got_error_from_errno("imsg_compose "
1829 "GITCONFIG_REPOSITORY_EXTENSIONS_REQUEST");
1830
1831 return flush_imsg(ibuf);
1832}
1833
1834
1835const struct got_error *
1836got_privsep_send_gitconfig_author_name_req(struct imsgbuf *ibuf)
1837{
1838 if (imsg_compose(ibuf,
1839 GOT_IMSG_GITCONFIG_AUTHOR_NAME_REQUEST, 0, 0, -1, NULL((void *)0), 0) == -1)
1840 return got_error_from_errno("imsg_compose "
1841 "GITCONFIG_AUTHOR_NAME_REQUEST");
1842
1843 return flush_imsg(ibuf);
1844}
1845
1846const struct got_error *
1847got_privsep_send_gitconfig_author_email_req(struct imsgbuf *ibuf)
1848{
1849 if (imsg_compose(ibuf,
1850 GOT_IMSG_GITCONFIG_AUTHOR_EMAIL_REQUEST, 0, 0, -1, NULL((void *)0), 0) == -1)
1851 return got_error_from_errno("imsg_compose "
1852 "GITCONFIG_AUTHOR_EMAIL_REQUEST");
1853
1854 return flush_imsg(ibuf);
1855}
1856
1857const struct got_error *
1858got_privsep_send_gitconfig_remotes_req(struct imsgbuf *ibuf)
1859{
1860 if (imsg_compose(ibuf,
1861 GOT_IMSG_GITCONFIG_REMOTES_REQUEST, 0, 0, -1, NULL((void *)0), 0) == -1)
1862 return got_error_from_errno("imsg_compose "
1863 "GITCONFIG_REMOTE_REQUEST");
1864
1865 return flush_imsg(ibuf);
1866}
1867
1868const struct got_error *
1869got_privsep_send_gitconfig_owner_req(struct imsgbuf *ibuf)
1870{
1871 if (imsg_compose(ibuf,
1872 GOT_IMSG_GITCONFIG_OWNER_REQUEST, 0, 0, -1, NULL((void *)0), 0) == -1)
1873 return got_error_from_errno("imsg_compose "
1874 "GITCONFIG_OWNER_REQUEST");
1875
1876 return flush_imsg(ibuf);
1877}
1878
1879const struct got_error *
1880got_privsep_recv_gitconfig_str(char **str, struct imsgbuf *ibuf)
1881{
1882 const struct got_error *err = NULL((void *)0);
1883 struct imsg imsg;
1884 size_t datalen;
1885 const size_t min_datalen = 0;
1886
1887 *str = NULL((void *)0);
1888
1889 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1890 if (err)
1891 return err;
1892 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
1893
1894 switch (imsg.hdr.type) {
1895 case GOT_IMSG_GITCONFIG_STR_VAL:
1896 if (datalen == 0)
1897 break;
1898 /* datalen does not include terminating \0 */
1899 *str = malloc(datalen + 1);
1900 if (*str == NULL((void *)0)) {
1901 err = got_error_from_errno("malloc");
1902 break;
1903 }
1904 memcpy(*str, imsg.data, datalen);
1905 (*str)[datalen] = '\0';
1906 break;
1907 default:
1908 err = got_error(GOT_ERR_PRIVSEP_MSG39);
1909 break;
1910 }
1911
1912 imsg_free(&imsg);
1913 return err;
1914}
1915
1916const struct got_error *
1917got_privsep_recv_gitconfig_int(int *val, struct imsgbuf *ibuf)
1918{
1919 const struct got_error *err = NULL((void *)0);
1920 struct imsg imsg;
1921 size_t datalen;
1922 const size_t min_datalen =
1923 MIN(sizeof(struct got_imsg_error), sizeof(int))((sizeof(struct got_imsg_error)) < (sizeof(int)) ? (sizeof
(struct got_imsg_error)) : (sizeof(int)));
1924
1925 *val = 0;
1926
1927 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1928 if (err)
1929 return err;
1930 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
1931
1932 switch (imsg.hdr.type) {
1933 case GOT_IMSG_GITCONFIG_INT_VAL:
1934 if (datalen != sizeof(*val)) {
1935 err = got_error(GOT_ERR_PRIVSEP_LEN36);
1936 break;
1937 }
1938 memcpy(val, imsg.data, sizeof(*val));
1939 break;
1940 default:
1941 err = got_error(GOT_ERR_PRIVSEP_MSG39);
1942 break;
1943 }
1944
1945 imsg_free(&imsg);
1946 return err;
1947}
1948
1949static void
1950free_remote_data(struct got_remote_repo *remote)
1951{
1952 int i;
1953
1954 free(remote->name);
1955 free(remote->url);
1956 for (i = 0; i < remote->nbranches; i++)
37
←
Loop condition is false. Execution continues on line 1958
→
1957 free(remote->branches[i]);
1958 free(remote->branches);
1959 for (i = 0; i < remote->nrefs; i++)
38
←
Assuming 'i' is < field 'nrefs'
→
39
←
Loop condition is true. Entering loop body
→
1960 free(remote->refs[i]);
40
←
Array access (via field 'refs') results in a null pointer dereference
1961 free(remote->refs);
1962}
1963
1964const struct got_error *
1965got_privsep_recv_gitconfig_remotes(struct got_remote_repo **remotes,
1966 int *nremotes, struct imsgbuf *ibuf)
1967{
1968 const struct got_error *err = NULL((void *)0);
1969 struct imsg imsg;
1970 size_t datalen;
1971 struct got_imsg_remotes iremotes;
1972 struct got_imsg_remote iremote;
1973
1974 *remotes = NULL((void *)0);
1975 *nremotes = 0;
1976 iremotes.nremotes = 0;
1977
1978 err = got_privsep_recv_imsg(&imsg, ibuf, sizeof(iremotes));
1979 if (err)
1980 return err;
1981 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
1982
1983 switch (imsg.hdr.type) {
1984 case GOT_IMSG_GITCONFIG_REMOTES:
1985 if (datalen != sizeof(iremotes)) {
1986 err = got_error(GOT_ERR_PRIVSEP_LEN36);
1987 break;
1988 }
1989 memcpy(&iremotes, imsg.data, sizeof(iremotes));
1990 if (iremotes.nremotes == 0) {
1991 imsg_free(&imsg);
1992 return NULL((void *)0);
1993 }
1994 break;
1995 default:
1996 imsg_free(&imsg);
1997 return got_error(GOT_ERR_PRIVSEP_MSG39);
1998 }
1999
2000 imsg_free(&imsg);
2001
2002 *remotes = recallocarray(NULL((void *)0), 0, iremotes.nremotes, sizeof(**remotes));
2003 if (*remotes == NULL((void *)0))
2004 return got_error_from_errno("recallocarray");
2005
2006 while (*nremotes < iremotes.nremotes) {
2007 struct got_remote_repo *remote;
2008
2009 err = got_privsep_recv_imsg(&imsg, ibuf, sizeof(iremote));
2010 if (err)
2011 break;
2012 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
2013
2014 switch (imsg.hdr.type) {
2015 case GOT_IMSG_GITCONFIG_REMOTE:
2016 remote = &(*remotes)[*nremotes];
2017 memset(remote, 0, sizeof(*remote));
2018 if (datalen < sizeof(iremote)) {
2019 err = got_error(GOT_ERR_PRIVSEP_LEN36);
2020 break;
2021 }
2022 memcpy(&iremote, imsg.data, sizeof(iremote));
2023 if (iremote.name_len == 0 || iremote.url_len == 0 ||
2024 (sizeof(iremote) + iremote.name_len +
2025 iremote.url_len) > datalen) {
2026 err = got_error(GOT_ERR_PRIVSEP_LEN36);
2027 break;
2028 }
2029 remote->name = strndup(imsg.data + sizeof(iremote),
2030 iremote.name_len);
2031 if (remote->name == NULL((void *)0)) {
2032 err = got_error_from_errno("strndup");
2033 break;
2034 }
2035 remote->url = strndup(imsg.data + sizeof(iremote) +
2036 iremote.name_len, iremote.url_len);
2037 if (remote->url == NULL((void *)0)) {
2038 err = got_error_from_errno("strndup");
2039 free_remote_data(remote);
2040 break;
2041 }
2042 remote->mirror_references = iremote.mirror_references;
2043 remote->fetch_all_branches = iremote.fetch_all_branches;
2044 remote->nbranches = 0;
2045 remote->branches = NULL((void *)0);
2046 remote->nrefs = 0;
2047 remote->refs = NULL((void *)0);
2048 (*nremotes)++;
2049 break;
2050 default:
2051 err = got_error(GOT_ERR_PRIVSEP_MSG39);
2052 break;
2053 }
2054
2055 imsg_free(&imsg);
2056 if (err)
2057 break;
2058 }
2059
2060 if (err) {
2061 int i;
2062 for (i = 0; i < *nremotes; i++)
2063 free_remote_data(&(*remotes)[i]);
2064 free(*remotes);
2065 *remotes = NULL((void *)0);
2066 *nremotes = 0;
2067 }
2068 return err;
2069}
2070
2071const struct got_error *
2072got_privsep_send_gotconfig_parse_req(struct imsgbuf *ibuf, int fd)
2073{
2074 const struct got_error *err = NULL((void *)0);
2075
2076 if (imsg_compose(ibuf, GOT_IMSG_GOTCONFIG_PARSE_REQUEST, 0, 0, fd,
2077 NULL((void *)0), 0) == -1) {
2078 err = got_error_from_errno("imsg_compose "
2079 "GOTCONFIG_PARSE_REQUEST");
2080 close(fd);
2081 return err;
2082 }
2083
2084 return flush_imsg(ibuf);
2085}
2086
2087const struct got_error *
2088got_privsep_send_gotconfig_author_req(struct imsgbuf *ibuf)
2089{
2090 if (imsg_compose(ibuf,
2091 GOT_IMSG_GOTCONFIG_AUTHOR_REQUEST, 0, 0, -1, NULL((void *)0), 0) == -1)
2092 return got_error_from_errno("imsg_compose "
2093 "GOTCONFIG_AUTHOR_REQUEST");
2094
2095 return flush_imsg(ibuf);
2096}
2097
2098const struct got_error *
2099got_privsep_send_gotconfig_remotes_req(struct imsgbuf *ibuf)
2100{
2101 if (imsg_compose(ibuf,
2102 GOT_IMSG_GOTCONFIG_REMOTES_REQUEST, 0, 0, -1, NULL((void *)0), 0) == -1)
2103 return got_error_from_errno("imsg_compose "
2104 "GOTCONFIG_REMOTE_REQUEST");
2105
2106 return flush_imsg(ibuf);
2107}
2108
2109const struct got_error *
2110got_privsep_recv_gotconfig_str(char **str, struct imsgbuf *ibuf)
2111{
2112 const struct got_error *err = NULL((void *)0);
2113 struct imsg imsg;
2114 size_t datalen;
2115 const size_t min_datalen = 0;
2116
2117 *str = NULL((void *)0);
2118
2119 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2120 if (err)
2121 return err;
2122 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
2123
2124 switch (imsg.hdr.type) {
2125 case GOT_IMSG_ERROR:
2126 if (datalen < sizeof(struct got_imsg_error)) {
2127 err = got_error(GOT_ERR_PRIVSEP_LEN36);
2128 break;
2129 }
2130 err = recv_imsg_error(&imsg, datalen);
2131 break;
2132 case GOT_IMSG_GOTCONFIG_STR_VAL:
2133 if (datalen == 0)
2134 break;
2135 /* datalen does not include terminating \0 */
2136 *str = malloc(datalen + 1);
2137 if (*str == NULL((void *)0)) {
2138 err = got_error_from_errno("malloc");
2139 break;
2140 }
2141 memcpy(*str, imsg.data, datalen);
2142 (*str)[datalen] = '\0';
2143 break;
2144 default:
2145 err = got_error(GOT_ERR_PRIVSEP_MSG39);
2146 break;
2147 }
2148
2149 imsg_free(&imsg);
2150 return err;
2151}
2152
2153
2154const struct got_error *
2155got_privsep_recv_gotconfig_remotes(struct got_remote_repo **remotes,
2156 int *nremotes, struct imsgbuf *ibuf)
2157{
2158 const struct got_error *err = NULL((void *)0);
2159 struct imsg imsg;
2160 size_t datalen;
2161 struct got_imsg_remotes iremotes;
2162 struct got_imsg_remote iremote;
2163 const size_t min_datalen =
2164 MIN(sizeof(struct got_imsg_error), sizeof(iremotes))((sizeof(struct got_imsg_error)) < (sizeof(iremotes)) ? (sizeof
(struct got_imsg_error)) : (sizeof(iremotes)));
1
'?' condition is false
→
2165
2166 *remotes = NULL((void *)0);
2167 *nremotes = 0;
2168 iremotes.nremotes = 0;
2169
2170 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2171 if (err)
2
←
Assuming 'err' is null
→
3
←
Taking false branch
→
2172 return err;
2173 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
2174
2175 switch (imsg.hdr.type) {
4
←
Control jumps to 'case GOT_IMSG_GOTCONFIG_REMOTES:' at line 2183
→
2176 case GOT_IMSG_ERROR:
2177 if (datalen < sizeof(struct got_imsg_error)) {
2178 err = got_error(GOT_ERR_PRIVSEP_LEN36);
2179 break;
2180 }
2181 err = recv_imsg_error(&imsg, datalen);
2182 break;
2183 case GOT_IMSG_GOTCONFIG_REMOTES:
2184 if (datalen != sizeof(iremotes)) {
5
←
Assuming the condition is false
→
6
←
Taking false branch
→
2185 err = got_error(GOT_ERR_PRIVSEP_LEN36);
2186 break;
2187 }
2188 memcpy(&iremotes, imsg.data, sizeof(iremotes));
2189 if (iremotes.nremotes == 0) {
7
←
Assuming field 'nremotes' is not equal to 0
→
8
←
Taking false branch
→
2190 imsg_free(&imsg);
2191 return NULL((void *)0);
2192 }
2193 break;
9
←
 Execution continues on line 2199
→
2194 default:
2195 imsg_free(&imsg);
2196 return got_error(GOT_ERR_PRIVSEP_MSG39);
2197 }
2198
2199 imsg_free(&imsg);
2200
2201 *remotes = recallocarray(NULL((void *)0), 0, iremotes.nremotes, sizeof(**remotes));
2202 if (*remotes == NULL((void *)0))
10
←
Assuming the condition is false
→
11
←
Taking false branch
→
2203 return got_error_from_errno("recallocarray");
2204
2205 while (*nremotes < iremotes.nremotes) {
12
←
Assuming the condition is true
→
13
←
Loop condition is true. Entering loop body
→
2206 struct got_remote_repo *remote;
2207 const size_t min_datalen =
2208 MIN(sizeof(struct got_imsg_error), sizeof(iremote))((sizeof(struct got_imsg_error)) < (sizeof(iremote)) ? (sizeof
(struct got_imsg_error)) : (sizeof(iremote)));
14
←
'?' condition is true
→
2209 int i;
2210
2211 err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
2212 if (err)
15
←
Assuming 'err' is null
→
16
←
Taking false branch
→
2213 break;
2214 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
2215
2216 switch (imsg.hdr.type) {
17
←
Control jumps to 'case GOT_IMSG_GOTCONFIG_REMOTE:' at line 2224
→
2217 case GOT_IMSG_ERROR:
2218 if (datalen < sizeof(struct got_imsg_error)) {
2219 err = got_error(GOT_ERR_PRIVSEP_LEN36);
2220 break;
2221 }
2222 err = recv_imsg_error(&imsg, datalen);
2223 break;
2224 case GOT_IMSG_GOTCONFIG_REMOTE:
2225 remote = &(*remotes)[*nremotes];
2226 memset(remote, 0, sizeof(*remote));
2227 if (datalen < sizeof(iremote)) {
18
←
Assuming the condition is false
→
19
←
Taking false branch
→
2228 err = got_error(GOT_ERR_PRIVSEP_LEN36);
2229 break;
2230 }
2231 memcpy(&iremote, imsg.data, sizeof(iremote));
2232 if (iremote.name_len == 0 || iremote.url_len == 0 ||
20
←
Assuming field 'name_len' is not equal to 0
→
21
←
Assuming field 'url_len' is not equal to 0
→
23
←
Taking false branch
→
2233 (sizeof(iremote) + iremote.name_len +
22
←
Assuming the condition is false
→
2234 iremote.url_len) > datalen) {
2235 err = got_error(GOT_ERR_PRIVSEP_LEN36);
2236 break;
2237 }
2238 remote->name = strndup(imsg.data + sizeof(iremote),
2239 iremote.name_len);
2240 if (remote->name == NULL((void *)0)) {
24
←
Assuming field 'name' is not equal to NULL
→
25
←
Taking false branch
→
2241 err = got_error_from_errno("strndup");
2242 break;
2243 }
2244 remote->url = strndup(imsg.data + sizeof(iremote) +
2245 iremote.name_len, iremote.url_len);
2246 if (remote->url == NULL((void *)0)) {
26
←
Assuming field 'url' is not equal to NULL
→
27
←
Taking false branch
→
2247 err = got_error_from_errno("strndup");
2248 free_remote_data(remote);
2249 break;
2250 }
2251 remote->mirror_references = iremote.mirror_references;
2252 remote->fetch_all_branches = iremote.fetch_all_branches;
2253 if (iremote.nbranches > 0) {
28
←
Assuming field 'nbranches' is <= 0
→
29
←
Taking false branch
→
2254 remote->branches = recallocarray(NULL((void *)0), 0,
2255 iremote.nbranches, sizeof(char *));
2256 if (remote->branches == NULL((void *)0)) {
2257 err = got_error_from_errno("calloc");
2258 free_remote_data(remote);
2259 break;
2260 }
2261 }
2262 remote->nbranches = 0;
2263 for (i = 0; i
29.1
'i' is >= field 'nbranches'
 < iremote.nbranches; i++) {
30
←
Loop condition is false. Execution continues on line 2274
→
2264 char *branch;
2265 err = got_privsep_recv_gotconfig_str(&branch,
2266 ibuf);
2267 if (err) {
2268 free_remote_data(remote);
2269 goto done;
2270 }
2271 remote->branches[i] = branch;
2272 remote->nbranches++;
2273 }
2274 if (iremote.nrefs > 0) {
31
←
Assuming field 'nrefs' is > 0
→
32
←
Taking true branch
→
2275 remote->refs = recallocarray(NULL((void *)0), 0,
33
←
Value assigned to field 'refs'
→
2276 iremote.nrefs, sizeof(char *));
2277 if (remote->refs == NULL((void *)0)) {
34
←
Assuming field 'refs' is equal to NULL
→
35
←
Taking true branch
→
2278 err = got_error_from_errno("calloc");
2279 free_remote_data(remote);
36
←
Calling 'free_remote_data'
→
2280 break;
2281 }
2282 }
2283 remote->nrefs = 0;
2284 for (i = 0; i < iremote.nrefs; i++) {
2285 char *ref;
2286 err = got_privsep_recv_gotconfig_str(&ref,
2287 ibuf);
2288 if (err) {
2289 free_remote_data(remote);
2290 goto done;
2291 }
2292 remote->refs[i] = ref;
2293 remote->nrefs++;
2294 }
2295 (*nremotes)++;
2296 break;
2297 default:
2298 err = got_error(GOT_ERR_PRIVSEP_MSG39);
2299 break;
2300 }
2301
2302 imsg_free(&imsg);
2303 if (err)
2304 break;
2305 }
2306done:
2307 if (err) {
2308 int i;
2309 for (i = 0; i < *nremotes; i++)
2310 free_remote_data(&(*remotes)[i]);
2311 free(*remotes);
2312 *remotes = NULL((void *)0);
2313 *nremotes = 0;
2314 }
2315 return err;
2316}
2317
2318const struct got_error *
2319got_privsep_send_commit_traversal_request(struct imsgbuf *ibuf,
2320 struct got_object_id *id, int idx, const char *path)
2321{
2322 const struct got_error *err = NULL((void *)0);
2323 struct ibuf *wbuf;
2324 size_t path_len = strlen(path) + 1;
2325
2326 wbuf = imsg_create(ibuf, GOT_IMSG_COMMIT_TRAVERSAL_REQUEST, 0, 0,
2327 sizeof(struct got_imsg_commit_traversal_request) + path_len);
2328 if (wbuf == NULL((void *)0))
2329 return got_error_from_errno(
2330 "imsg_create COMMIT_TRAVERSAL_REQUEST");
2331 if (imsg_add(wbuf, id->sha1, SHA1_DIGEST_LENGTH20) == -1) {
2332 err = got_error_from_errno("imsg_add COMMIT_TRAVERSAL_REQUEST");
2333 ibuf_free(wbuf);
2334 return err;
2335 }
2336 if (imsg_add(wbuf, &idx, sizeof(idx)) == -1) {
2337 err = got_error_from_errno("imsg_add COMMIT_TRAVERSAL_REQUEST");
2338 ibuf_free(wbuf);
2339 return err;
2340 }
2341 if (imsg_add(wbuf, path, path_len) == -1) {
2342 err = got_error_from_errno("imsg_add COMMIT_TRAVERSAL_REQUEST");
2343 ibuf_free(wbuf);
2344 return err;
2345 }
2346
2347 wbuf->fd = -1;
2348 imsg_close(ibuf, wbuf);
2349
2350 return flush_imsg(ibuf);
2351}
2352
2353const struct got_error *
2354got_privsep_recv_traversed_commits(struct got_commit_object **changed_commit,
2355 struct got_object_id **changed_commit_id,
2356 struct got_object_id_queue *commit_ids, struct imsgbuf *ibuf)
2357{
2358 const struct got_error *err = NULL((void *)0);
2359 struct imsg imsg;
2360 struct got_imsg_traversed_commits *icommits;
2361 size_t datalen;
2362 int i, done = 0;
2363
2364 *changed_commit = NULL((void *)0);
2365 *changed_commit_id = NULL((void *)0);
2366
2367 while (!done) {
2368 err = got_privsep_recv_imsg(&imsg, ibuf, 0);
2369 if (err)
2370 return err;
2371
2372 datalen = imsg.hdr.len - IMSG_HEADER_SIZEsizeof(struct imsg_hdr);
2373 switch (imsg.hdr.type) {
2374 case GOT_IMSG_TRAVERSED_COMMITS:
2375 icommits = imsg.data;
2376 if (datalen != sizeof(*icommits) +
2377 icommits->ncommits * SHA1_DIGEST_LENGTH20) {
2378 err = got_error(GOT_ERR_PRIVSEP_LEN36);
2379 break;
2380 }
2381 for (i = 0; i < icommits->ncommits; i++) {
2382 struct got_object_qid *qid;
2383 uint8_t *sha1 = (uint8_t *)imsg.data +
2384 sizeof(*icommits) + i * SHA1_DIGEST_LENGTH20;
2385 err = got_object_qid_alloc_partial(&qid);
2386 if (err)
2387 break;
2388 memcpy(qid->id->sha1, sha1, SHA1_DIGEST_LENGTH20);
2389 SIMPLEQ_INSERT_TAIL(commit_ids, qid, entry)do { (qid)->entry.sqe_next = ((void *)0); *(commit_ids)->
sqh_last = (qid); (commit_ids)->sqh_last = &(qid)->
entry.sqe_next; } while (0);
2390
2391 /* The last commit may contain a change. */
2392 if (i == icommits->ncommits - 1) {
2393 *changed_commit_id =
2394 got_object_id_dup(qid->id);
2395 if (*changed_commit_id == NULL((void *)0)) {
2396 err = got_error_from_errno(
2397 "got_object_id_dup");
2398 break;
2399 }
2400 }
2401 }
2402 break;
2403 case GOT_IMSG_COMMIT:
2404 if (*changed_commit_id == NULL((void *)0)) {
2405 err = got_error(GOT_ERR_PRIVSEP_MSG39);
2406 break;
2407 }
2408 err = get_commit_from_imsg(changed_commit, &imsg,
2409 datalen, ibuf);
2410 break;
2411 case GOT_IMSG_COMMIT_TRAVERSAL_DONE:
2412 done = 1;
2413 break;
2414 default:
2415 err = got_error(GOT_ERR_PRIVSEP_MSG39);
2416 break;
2417 }
2418
2419 imsg_free(&imsg);
2420 if (err)
2421 break;
2422 }
2423
2424 if (err)
2425 got_object_id_queue_free(commit_ids);
2426 return err;
2427}
2428
2429const struct got_error *
2430got_privsep_unveil_exec_helpers(void)
2431{
2432 const char *helpers[] = {
2433 GOT_PATH_PROG_READ_PACK"/home/ben/bin" "/" "got-read-pack",
2434 GOT_PATH_PROG_READ_OBJECT"/home/ben/bin" "/" "got-read-object",
2435 GOT_PATH_PROG_READ_COMMIT"/home/ben/bin" "/" "got-read-commit",
2436 GOT_PATH_PROG_READ_TREE"/home/ben/bin" "/" "got-read-tree",
2437 GOT_PATH_PROG_READ_BLOB"/home/ben/bin" "/" "got-read-blob",
2438 GOT_PATH_PROG_READ_TAG"/home/ben/bin" "/" "got-read-tag",
2439 GOT_PATH_PROG_READ_GITCONFIG"/home/ben/bin" "/" "got-read-gitconfig",
2440 GOT_PATH_PROG_READ_GOTCONFIG"/home/ben/bin" "/" "got-read-gotconfig",
2441 GOT_PATH_PROG_FETCH_PACK"/home/ben/bin" "/" "got-fetch-pack",
2442 GOT_PATH_PROG_INDEX_PACK"/home/ben/bin" "/" "got-index-pack",
2443 };
2444 size_t i;
2445
2446 for (i = 0; i < nitems(helpers)(sizeof((helpers)) / sizeof((helpers)[0])); i++) {
2447 if (unveil(helpers[i], "x") == 0)
2448 continue;
2449 return got_error_from_errno2("unveil", helpers[i]);
2450 }
2451
2452 return NULL((void *)0);
2453}
2454
2455void
2456got_privsep_exec_child(int imsg_fds[2], const char *path, const char *repo_path)
2457{
2458 if (close(imsg_fds[0]) == -1) {
2459 fprintf(stderr(&__sF[2]), "%s: %s\n", getprogname(), strerror(errno(*__errno())));
2460 _exit(1);
2461 }
2462
2463 if (dup2(imsg_fds[1], GOT_IMSG_FD_CHILD(2 + 1)) == -1) {
2464 fprintf(stderr(&__sF[2]), "%s: %s\n", getprogname(), strerror(errno(*__errno())));
2465 _exit(1);
2466 }
2467 if (closefrom(GOT_IMSG_FD_CHILD(2 + 1) + 1) == -1) {
2468 fprintf(stderr(&__sF[2]), "%s: %s\n", getprogname(), strerror(errno(*__errno())));
2469 _exit(1);
2470 }
2471
2472 if (execl(path, path, repo_path, (char *)NULL((void *)0)) == -1) {
2473 fprintf(stderr(&__sF[2]), "%s: %s: %s\n", getprogname(), path,
2474 strerror(errno(*__errno())));
2475 _exit(1);
2476 }
2477}