2 5d56da81 2019-01-13 stsp * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
4 2178c42e 2018-04-22 stsp * Permission to use, copy, modify, and distribute this software for any
5 2178c42e 2018-04-22 stsp * purpose with or without fee is hereby granted, provided that the above
6 2178c42e 2018-04-22 stsp * copyright notice and this permission notice appear in all copies.
8 2178c42e 2018-04-22 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 2178c42e 2018-04-22 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 2178c42e 2018-04-22 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 2178c42e 2018-04-22 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 2178c42e 2018-04-22 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 2178c42e 2018-04-22 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 2178c42e 2018-04-22 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 2178c42e 2018-04-22 stsp #include <sys/types.h>
18 2178c42e 2018-04-22 stsp #include <sys/queue.h>
19 2178c42e 2018-04-22 stsp #include <sys/uio.h>
20 876c234b 2018-09-10 stsp #include <sys/syslimits.h>
21 876c234b 2018-09-10 stsp #include <sys/wait.h>
23 2178c42e 2018-04-22 stsp #include <stdio.h>
24 2178c42e 2018-04-22 stsp #include <stdlib.h>
25 2178c42e 2018-04-22 stsp #include <string.h>
26 2178c42e 2018-04-22 stsp #include <errno.h>
27 2178c42e 2018-04-22 stsp #include <stdint.h>
28 2178c42e 2018-04-22 stsp #include <poll.h>
29 2178c42e 2018-04-22 stsp #include <imsg.h>
30 2178c42e 2018-04-22 stsp #include <sha1.h>
31 2178c42e 2018-04-22 stsp #include <zlib.h>
32 788c352e 2018-06-16 stsp #include <time.h>
34 2178c42e 2018-04-22 stsp #include "got_object.h"
35 2178c42e 2018-04-22 stsp #include "got_error.h"
37 2178c42e 2018-04-22 stsp #include "got_lib_sha1.h"
38 2178c42e 2018-04-22 stsp #include "got_lib_delta.h"
39 63581804 2018-07-09 stsp #include "got_lib_inflate.h"
40 2178c42e 2018-04-22 stsp #include "got_lib_object.h"
41 a440fac0 2018-09-06 stsp #include "got_lib_object_parse.h"
42 2178c42e 2018-04-22 stsp #include "got_lib_privsep.h"
43 876c234b 2018-09-10 stsp #include "got_lib_pack.h"
46 2178c42e 2018-04-22 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
49 c39c25dd 2019-08-09 stsp #ifndef nitems
50 c39c25dd 2019-08-09 stsp #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
53 2178c42e 2018-04-22 stsp static const struct got_error *
54 2178c42e 2018-04-22 stsp poll_fd(int fd, int events, int timeout)
56 2178c42e 2018-04-22 stsp struct pollfd pfd[1];
59 2178c42e 2018-04-22 stsp pfd[0].fd = fd;
60 2178c42e 2018-04-22 stsp pfd[0].events = events;
62 2178c42e 2018-04-22 stsp n = poll(pfd, 1, timeout);
63 2178c42e 2018-04-22 stsp if (n == -1)
64 638f9024 2019-05-13 stsp return got_error_from_errno("poll");
66 2178c42e 2018-04-22 stsp return got_error(GOT_ERR_TIMEOUT);
67 2178c42e 2018-04-22 stsp if (pfd[0].revents & (POLLERR | POLLNVAL))
68 638f9024 2019-05-13 stsp return got_error_from_errno("poll error");
69 2178c42e 2018-04-22 stsp if (pfd[0].revents & (events | POLLHUP))
70 2178c42e 2018-04-22 stsp return NULL;
72 2178c42e 2018-04-22 stsp return got_error(GOT_ERR_INTERRUPT);
75 c4eae628 2018-04-23 stsp static const struct got_error *
76 e033d803 2018-04-23 stsp read_imsg(struct imsgbuf *ibuf)
78 fe36cf76 2018-04-23 stsp const struct got_error *err;
81 fe36cf76 2018-04-23 stsp err = poll_fd(ibuf->fd, POLLIN, INFTIM);
85 fe36cf76 2018-04-23 stsp n = imsg_read(ibuf);
86 fe36cf76 2018-04-23 stsp if (n == -1) {
87 fe36cf76 2018-04-23 stsp if (errno == EAGAIN) /* Could be a file-descriptor leak. */
88 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_NO_FD);
89 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_READ);
92 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_PIPE);
94 e033d803 2018-04-23 stsp return NULL;
97 ad242220 2018-09-08 stsp const struct got_error *
98 876c234b 2018-09-10 stsp got_privsep_wait_for_child(pid_t pid)
100 876c234b 2018-09-10 stsp int child_status;
102 2cb49fa8 2019-05-10 stsp if (waitpid(pid, &child_status, 0) == -1)
103 638f9024 2019-05-13 stsp return got_error_from_errno("waitpid");
105 876c234b 2018-09-10 stsp if (!WIFEXITED(child_status))
106 876c234b 2018-09-10 stsp return got_error(GOT_ERR_PRIVSEP_DIED);
108 876c234b 2018-09-10 stsp if (WEXITSTATUS(child_status) != 0)
109 876c234b 2018-09-10 stsp return got_error(GOT_ERR_PRIVSEP_EXIT);
111 876c234b 2018-09-10 stsp return NULL;
114 73b7854a 2018-11-11 stsp static const struct got_error *
115 73b7854a 2018-11-11 stsp recv_imsg_error(struct imsg *imsg, size_t datalen)
117 73b7854a 2018-11-11 stsp struct got_imsg_error *ierr;
119 73b7854a 2018-11-11 stsp if (datalen != sizeof(*ierr))
120 73b7854a 2018-11-11 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
122 73b7854a 2018-11-11 stsp ierr = imsg->data;
123 73b7854a 2018-11-11 stsp if (ierr->code == GOT_ERR_ERRNO) {
124 73b7854a 2018-11-11 stsp static struct got_error serr;
125 73b7854a 2018-11-11 stsp serr.code = GOT_ERR_ERRNO;
126 73b7854a 2018-11-11 stsp serr.msg = strerror(ierr->errno_code);
127 73b7854a 2018-11-11 stsp return &serr;
130 73b7854a 2018-11-11 stsp return got_error(ierr->code);
133 876c234b 2018-09-10 stsp const struct got_error *
134 46de5bfd 2018-11-11 stsp got_privsep_recv_imsg(struct imsg *imsg, struct imsgbuf *ibuf,
135 46de5bfd 2018-11-11 stsp size_t min_datalen)
137 e033d803 2018-04-23 stsp const struct got_error *err;
140 e033d803 2018-04-23 stsp n = imsg_get(ibuf, imsg);
141 876c234b 2018-09-10 stsp if (n == -1)
142 638f9024 2019-05-13 stsp return got_error_from_errno("imsg_get");
144 876c234b 2018-09-10 stsp while (n == 0) {
145 876c234b 2018-09-10 stsp err = read_imsg(ibuf);
147 876c234b 2018-09-10 stsp return err;
148 876c234b 2018-09-10 stsp n = imsg_get(ibuf, imsg);
151 fe36cf76 2018-04-23 stsp if (imsg->hdr.len < IMSG_HEADER_SIZE + min_datalen)
152 c4eae628 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
154 73b7854a 2018-11-11 stsp if (imsg->hdr.type == GOT_IMSG_ERROR) {
155 73b7854a 2018-11-11 stsp size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
156 73b7854a 2018-11-11 stsp return recv_imsg_error(imsg, datalen);
159 73b7854a 2018-11-11 stsp return NULL;
162 2178c42e 2018-04-22 stsp /* Attempt to send an error in an imsg. Complain on stderr as a last resort. */
164 2178c42e 2018-04-22 stsp got_privsep_send_error(struct imsgbuf *ibuf, const struct got_error *err)
166 2178c42e 2018-04-22 stsp const struct got_error *poll_err;
167 2178c42e 2018-04-22 stsp struct got_imsg_error ierr;
170 2178c42e 2018-04-22 stsp ierr.code = err->code;
171 2178c42e 2018-04-22 stsp if (err->code == GOT_ERR_ERRNO)
172 2178c42e 2018-04-22 stsp ierr.errno_code = errno;
174 2178c42e 2018-04-22 stsp ierr.errno_code = 0;
175 2178c42e 2018-04-22 stsp ret = imsg_compose(ibuf, GOT_IMSG_ERROR, 0, 0, -1, &ierr, sizeof(ierr));
176 e93cd828 2018-11-11 stsp if (ret == -1) {
177 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": imsg_compose: %s\n",
178 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, strerror(errno));
182 2178c42e 2018-04-22 stsp poll_err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
183 5d43e84d 2018-04-23 stsp if (poll_err) {
184 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": poll: %s\n",
185 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, poll_err->msg);
189 2178c42e 2018-04-22 stsp ret = imsg_flush(ibuf);
190 5d43e84d 2018-04-23 stsp if (ret == -1) {
191 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": imsg_flush: %s\n",
192 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, strerror(errno));
197 e033d803 2018-04-23 stsp static const struct got_error *
198 e033d803 2018-04-23 stsp flush_imsg(struct imsgbuf *ibuf)
200 e033d803 2018-04-23 stsp const struct got_error *err;
202 e033d803 2018-04-23 stsp err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
204 e033d803 2018-04-23 stsp return err;
206 e033d803 2018-04-23 stsp if (imsg_flush(ibuf) == -1)
207 638f9024 2019-05-13 stsp return got_error_from_errno("imsg_flush");
209 e033d803 2018-04-23 stsp return NULL;
212 ad242220 2018-09-08 stsp const struct got_error *
213 ad242220 2018-09-08 stsp got_privsep_send_stop(int fd)
215 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
216 ad242220 2018-09-08 stsp struct imsgbuf ibuf;
218 ad242220 2018-09-08 stsp imsg_init(&ibuf, fd);
220 ad242220 2018-09-08 stsp if (imsg_compose(&ibuf, GOT_IMSG_STOP, 0, 0, -1, NULL, 0) == -1)
221 638f9024 2019-05-13 stsp return got_error_from_errno("imsg_compose STOP");
223 ad242220 2018-09-08 stsp err = flush_imsg(&ibuf);
224 ad242220 2018-09-08 stsp imsg_clear(&ibuf);
225 ad242220 2018-09-08 stsp return err;
228 ad242220 2018-09-08 stsp const struct got_error *
229 aea5f015 2018-12-24 stsp got_privsep_send_obj_req(struct imsgbuf *ibuf, int fd)
231 aea5f015 2018-12-24 stsp if (imsg_compose(ibuf, GOT_IMSG_OBJECT_REQUEST, 0, 0, fd, NULL, 0)
233 638f9024 2019-05-13 stsp return got_error_from_errno("imsg_compose OBJECT_REQUEST");
235 1785f84a 2018-12-23 stsp return flush_imsg(ibuf);
238 1785f84a 2018-12-23 stsp const struct got_error *
239 1785f84a 2018-12-23 stsp got_privsep_send_commit_req(struct imsgbuf *ibuf, int fd,
240 1785f84a 2018-12-23 stsp struct got_object_id *id, int pack_idx)
242 41496140 2019-02-21 stsp const struct got_error *err = NULL;
243 1785f84a 2018-12-23 stsp struct got_imsg_packed_object iobj, *iobjp;
244 1785f84a 2018-12-23 stsp size_t len;
246 1785f84a 2018-12-23 stsp if (id) { /* commit is packed */
247 1785f84a 2018-12-23 stsp iobj.idx = pack_idx;
248 1785f84a 2018-12-23 stsp memcpy(iobj.id, id->sha1, sizeof(iobj.id));
249 1785f84a 2018-12-23 stsp iobjp = &iobj;
250 1785f84a 2018-12-23 stsp len = sizeof(iobj);
252 1785f84a 2018-12-23 stsp iobjp = NULL;
256 1785f84a 2018-12-23 stsp if (imsg_compose(ibuf, GOT_IMSG_COMMIT_REQUEST, 0, 0, fd, iobjp, len)
258 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose COMMIT_REQUEST");
260 41496140 2019-02-21 stsp return err;
263 13c729f7 2018-12-24 stsp return flush_imsg(ibuf);
266 13c729f7 2018-12-24 stsp const struct got_error *
267 13c729f7 2018-12-24 stsp got_privsep_send_tree_req(struct imsgbuf *ibuf, int fd,
268 13c729f7 2018-12-24 stsp struct got_object_id *id, int pack_idx)
270 41496140 2019-02-21 stsp const struct got_error *err = NULL;
271 13c729f7 2018-12-24 stsp struct got_imsg_packed_object iobj, *iobjp;
272 13c729f7 2018-12-24 stsp size_t len;
274 13c729f7 2018-12-24 stsp if (id) { /* tree is packed */
275 13c729f7 2018-12-24 stsp iobj.idx = pack_idx;
276 13c729f7 2018-12-24 stsp memcpy(iobj.id, id->sha1, sizeof(iobj.id));
277 13c729f7 2018-12-24 stsp iobjp = &iobj;
278 13c729f7 2018-12-24 stsp len = sizeof(iobj);
280 13c729f7 2018-12-24 stsp iobjp = NULL;
284 13c729f7 2018-12-24 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE_REQUEST, 0, 0, fd, iobjp, len)
286 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose TREE_REQUEST");
288 41496140 2019-02-21 stsp return err;
291 268f7291 2018-12-24 stsp return flush_imsg(ibuf);
294 268f7291 2018-12-24 stsp const struct got_error *
295 268f7291 2018-12-24 stsp got_privsep_send_tag_req(struct imsgbuf *ibuf, int fd,
296 268f7291 2018-12-24 stsp struct got_object_id *id, int pack_idx)
298 268f7291 2018-12-24 stsp struct got_imsg_packed_object iobj, *iobjp;
299 268f7291 2018-12-24 stsp size_t len;
301 268f7291 2018-12-24 stsp if (id) { /* tag is packed */
302 268f7291 2018-12-24 stsp iobj.idx = pack_idx;
303 268f7291 2018-12-24 stsp memcpy(iobj.id, id->sha1, sizeof(iobj.id));
304 268f7291 2018-12-24 stsp iobjp = &iobj;
305 268f7291 2018-12-24 stsp len = sizeof(iobj);
307 268f7291 2018-12-24 stsp iobjp = NULL;
311 268f7291 2018-12-24 stsp if (imsg_compose(ibuf, GOT_IMSG_TAG_REQUEST, 0, 0, fd, iobjp, len)
313 638f9024 2019-05-13 stsp return got_error_from_errno("imsg_compose TAG_REQUEST");
315 7762fe12 2018-11-05 stsp return flush_imsg(ibuf);
318 7762fe12 2018-11-05 stsp const struct got_error *
319 ebc55e2d 2018-12-24 stsp got_privsep_send_blob_req(struct imsgbuf *ibuf, int infd,
320 ebc55e2d 2018-12-24 stsp struct got_object_id *id, int pack_idx)
322 41496140 2019-02-21 stsp const struct got_error *err = NULL;
323 ebc55e2d 2018-12-24 stsp struct got_imsg_packed_object iobj, *iobjp;
324 ebc55e2d 2018-12-24 stsp size_t len;
326 ebc55e2d 2018-12-24 stsp if (id) { /* blob is packed */
327 ebc55e2d 2018-12-24 stsp iobj.idx = pack_idx;
328 ebc55e2d 2018-12-24 stsp memcpy(iobj.id, id->sha1, sizeof(iobj.id));
329 ebc55e2d 2018-12-24 stsp iobjp = &iobj;
330 ebc55e2d 2018-12-24 stsp len = sizeof(iobj);
332 ebc55e2d 2018-12-24 stsp iobjp = NULL;
336 ebc55e2d 2018-12-24 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB_REQUEST, 0, 0, infd, iobjp, len)
338 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose BLOB_REQUEST");
339 41496140 2019-02-21 stsp close(infd);
340 41496140 2019-02-21 stsp return err;
343 55da3778 2018-09-10 stsp return flush_imsg(ibuf);
346 55da3778 2018-09-10 stsp const struct got_error *
347 55da3778 2018-09-10 stsp got_privsep_send_blob_outfd(struct imsgbuf *ibuf, int outfd)
349 41496140 2019-02-21 stsp const struct got_error *err = NULL;
351 ad242220 2018-09-08 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB_OUTFD, 0, 0, outfd, NULL, 0)
353 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose BLOB_OUTFD");
354 41496140 2019-02-21 stsp close(outfd);
355 41496140 2019-02-21 stsp return err;
358 3840f4c9 2018-09-12 stsp return flush_imsg(ibuf);
361 3840f4c9 2018-09-12 stsp const struct got_error *
362 3840f4c9 2018-09-12 stsp got_privsep_send_tmpfd(struct imsgbuf *ibuf, int fd)
364 41496140 2019-02-21 stsp const struct got_error *err = NULL;
366 3840f4c9 2018-09-12 stsp if (imsg_compose(ibuf, GOT_IMSG_TMPFD, 0, 0, fd, NULL, 0)
368 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose TMPFD");
370 41496140 2019-02-21 stsp return err;
373 ad242220 2018-09-08 stsp return flush_imsg(ibuf);
376 ad242220 2018-09-08 stsp const struct got_error *
377 876c234b 2018-09-10 stsp got_privsep_send_obj(struct imsgbuf *ibuf, struct got_object *obj)
379 2178c42e 2018-04-22 stsp struct got_imsg_object iobj;
381 c59b3346 2018-09-11 stsp memcpy(iobj.id, obj->id.sha1, sizeof(iobj.id));
382 2178c42e 2018-04-22 stsp iobj.type = obj->type;
383 2178c42e 2018-04-22 stsp iobj.flags = obj->flags;
384 2178c42e 2018-04-22 stsp iobj.hdrlen = obj->hdrlen;
385 2178c42e 2018-04-22 stsp iobj.size = obj->size;
386 c59b3346 2018-09-11 stsp if (iobj.flags & GOT_OBJ_FLAG_PACKED) {
387 876c234b 2018-09-10 stsp iobj.pack_offset = obj->pack_offset;
388 c59b3346 2018-09-11 stsp iobj.pack_idx = obj->pack_idx;
391 2178c42e 2018-04-22 stsp if (imsg_compose(ibuf, GOT_IMSG_OBJECT, 0, 0, -1, &iobj, sizeof(iobj))
393 638f9024 2019-05-13 stsp return got_error_from_errno("imsg_compose OBJECT");
395 c59b3346 2018-09-11 stsp return flush_imsg(ibuf);
398 cfd633c2 2018-09-10 stsp const struct got_error *
399 cfd633c2 2018-09-10 stsp got_privsep_get_imsg_obj(struct got_object **obj, struct imsg *imsg,
400 cfd633c2 2018-09-10 stsp struct imsgbuf *ibuf)
402 cfd633c2 2018-09-10 stsp const struct got_error *err = NULL;
403 291624d8 2018-11-07 stsp struct got_imsg_object *iobj;
404 cfd633c2 2018-09-10 stsp size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
406 291624d8 2018-11-07 stsp if (datalen != sizeof(*iobj))
407 cfd633c2 2018-09-10 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
408 291624d8 2018-11-07 stsp iobj = imsg->data;
410 cfd633c2 2018-09-10 stsp *obj = calloc(1, sizeof(**obj));
411 cfd633c2 2018-09-10 stsp if (*obj == NULL)
412 638f9024 2019-05-13 stsp return got_error_from_errno("calloc");
414 291624d8 2018-11-07 stsp memcpy((*obj)->id.sha1, iobj->id, SHA1_DIGEST_LENGTH);
415 291624d8 2018-11-07 stsp (*obj)->type = iobj->type;
416 291624d8 2018-11-07 stsp (*obj)->flags = iobj->flags;
417 291624d8 2018-11-07 stsp (*obj)->hdrlen = iobj->hdrlen;
418 291624d8 2018-11-07 stsp (*obj)->size = iobj->size;
419 c59b3346 2018-09-11 stsp /* path_packfile is handled by caller */
420 291624d8 2018-11-07 stsp if (iobj->flags & GOT_OBJ_FLAG_PACKED) {
421 291624d8 2018-11-07 stsp (*obj)->pack_offset = iobj->pack_offset;
422 291624d8 2018-11-07 stsp (*obj)->pack_idx = iobj->pack_idx;
425 876c234b 2018-09-10 stsp return err;
428 2178c42e 2018-04-22 stsp const struct got_error *
429 2178c42e 2018-04-22 stsp got_privsep_recv_obj(struct got_object **obj, struct imsgbuf *ibuf)
431 2178c42e 2018-04-22 stsp const struct got_error *err = NULL;
432 2178c42e 2018-04-22 stsp struct imsg imsg;
433 2178c42e 2018-04-22 stsp size_t datalen;
434 c4eae628 2018-04-23 stsp const size_t min_datalen =
435 c4eae628 2018-04-23 stsp MIN(sizeof(struct got_imsg_error), sizeof(struct got_imsg_object));
437 2178c42e 2018-04-22 stsp *obj = NULL;
439 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
441 2178c42e 2018-04-22 stsp return err;
443 2178c42e 2018-04-22 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
445 2178c42e 2018-04-22 stsp switch (imsg.hdr.type) {
446 2178c42e 2018-04-22 stsp case GOT_IMSG_OBJECT:
447 cfd633c2 2018-09-10 stsp err = got_privsep_get_imsg_obj(obj, &imsg, ibuf);
450 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
454 bff6ca00 2018-04-23 stsp imsg_free(&imsg);
456 bff6ca00 2018-04-23 stsp return err;
459 c75f7264 2018-09-11 stsp static const struct got_error *
460 c75f7264 2018-09-11 stsp send_commit_logmsg(struct imsgbuf *ibuf, struct got_commit_object *commit,
461 c75f7264 2018-09-11 stsp size_t logmsg_len)
463 fa4ffeb3 2018-11-04 stsp const struct got_error *err = NULL;
464 c75f7264 2018-09-11 stsp size_t offset, remain;
466 c75f7264 2018-09-11 stsp offset = 0;
467 c75f7264 2018-09-11 stsp remain = logmsg_len;
468 c75f7264 2018-09-11 stsp while (remain > 0) {
469 c75f7264 2018-09-11 stsp size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain);
471 c75f7264 2018-09-11 stsp if (imsg_compose(ibuf, GOT_IMSG_COMMIT_LOGMSG, 0, 0, -1,
472 fa4ffeb3 2018-11-04 stsp commit->logmsg + offset, n) == -1) {
473 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose "
474 230a42bd 2019-05-11 jcs "COMMIT_LOGMSG");
478 fa4ffeb3 2018-11-04 stsp err = flush_imsg(ibuf);
482 c75f7264 2018-09-11 stsp offset += n;
483 c75f7264 2018-09-11 stsp remain -= n;
486 fa4ffeb3 2018-11-04 stsp return err;
489 bff6ca00 2018-04-23 stsp const struct got_error *
490 068fd2bf 2018-04-24 stsp got_privsep_send_commit(struct imsgbuf *ibuf, struct got_commit_object *commit)
492 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
493 b9c33926 2018-11-07 stsp struct got_imsg_commit_object *icommit;
494 bff6ca00 2018-04-23 stsp uint8_t *buf;
495 bff6ca00 2018-04-23 stsp size_t len, total;
496 79f35eb3 2018-06-11 stsp struct got_object_qid *qid;
497 b9c33926 2018-11-07 stsp size_t author_len = strlen(commit->author);
498 b9c33926 2018-11-07 stsp size_t committer_len = strlen(commit->committer);
499 c75f7264 2018-09-11 stsp size_t logmsg_len = strlen(commit->logmsg);
501 b9c33926 2018-11-07 stsp total = sizeof(*icommit) + author_len + committer_len +
502 b9c33926 2018-11-07 stsp commit->nparents * SHA1_DIGEST_LENGTH;
504 bff6ca00 2018-04-23 stsp buf = malloc(total);
505 bff6ca00 2018-04-23 stsp if (buf == NULL)
506 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
508 b9c33926 2018-11-07 stsp icommit = (struct got_imsg_commit_object *)buf;
509 a7403916 2018-12-24 stsp memcpy(icommit->tree_id, commit->tree_id->sha1,
510 a7403916 2018-12-24 stsp sizeof(icommit->tree_id));
511 b9c33926 2018-11-07 stsp icommit->author_len = author_len;
512 b9c33926 2018-11-07 stsp icommit->author_time = commit->author_time;
513 b9c33926 2018-11-07 stsp icommit->author_gmtoff = commit->author_gmtoff;
514 b9c33926 2018-11-07 stsp icommit->committer_len = committer_len;
515 b9c33926 2018-11-07 stsp icommit->committer_time = commit->committer_time;
516 b9c33926 2018-11-07 stsp icommit->committer_gmtoff = commit->committer_gmtoff;
517 b9c33926 2018-11-07 stsp icommit->logmsg_len = logmsg_len;
518 b9c33926 2018-11-07 stsp icommit->nparents = commit->nparents;
520 b9c33926 2018-11-07 stsp len = sizeof(*icommit);
521 b9c33926 2018-11-07 stsp memcpy(buf + len, commit->author, author_len);
522 b9c33926 2018-11-07 stsp len += author_len;
523 b9c33926 2018-11-07 stsp memcpy(buf + len, commit->committer, committer_len);
524 b9c33926 2018-11-07 stsp len += committer_len;
525 79f35eb3 2018-06-11 stsp SIMPLEQ_FOREACH(qid, &commit->parent_ids, entry) {
526 79f35eb3 2018-06-11 stsp memcpy(buf + len, qid->id, SHA1_DIGEST_LENGTH);
527 86acc566 2018-04-23 stsp len += SHA1_DIGEST_LENGTH;
530 bff6ca00 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_COMMIT, 0, 0, -1, buf, len) == -1) {
531 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose COMMIT");
535 904df868 2018-11-04 stsp if (logmsg_len == 0 ||
536 904df868 2018-11-04 stsp logmsg_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
537 904df868 2018-11-04 stsp err = flush_imsg(ibuf);
541 c75f7264 2018-09-11 stsp err = send_commit_logmsg(ibuf, commit, logmsg_len);
544 bff6ca00 2018-04-23 stsp return err;
547 bff6ca00 2018-04-23 stsp const struct got_error *
548 068fd2bf 2018-04-24 stsp got_privsep_recv_commit(struct got_commit_object **commit, struct imsgbuf *ibuf)
550 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
551 bff6ca00 2018-04-23 stsp struct imsg imsg;
552 291624d8 2018-11-07 stsp struct got_imsg_commit_object *icommit;
553 bff6ca00 2018-04-23 stsp size_t len, datalen;
555 bff6ca00 2018-04-23 stsp const size_t min_datalen =
556 bff6ca00 2018-04-23 stsp MIN(sizeof(struct got_imsg_error),
557 bff6ca00 2018-04-23 stsp sizeof(struct got_imsg_commit_object));
559 bff6ca00 2018-04-23 stsp *commit = NULL;
561 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
563 bff6ca00 2018-04-23 stsp return err;
565 bff6ca00 2018-04-23 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
568 bff6ca00 2018-04-23 stsp switch (imsg.hdr.type) {
569 bff6ca00 2018-04-23 stsp case GOT_IMSG_COMMIT:
570 291624d8 2018-11-07 stsp if (datalen < sizeof(*icommit)) {
571 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
574 291624d8 2018-11-07 stsp icommit = imsg.data;
575 291624d8 2018-11-07 stsp if (datalen != sizeof(*icommit) + icommit->author_len +
576 291624d8 2018-11-07 stsp icommit->committer_len +
577 291624d8 2018-11-07 stsp icommit->nparents * SHA1_DIGEST_LENGTH) {
578 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
581 291624d8 2018-11-07 stsp if (icommit->nparents < 0) {
582 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
585 291624d8 2018-11-07 stsp len += sizeof(*icommit);
587 bff6ca00 2018-04-23 stsp *commit = got_object_commit_alloc_partial();
588 bff6ca00 2018-04-23 stsp if (*commit == NULL) {
589 638f9024 2019-05-13 stsp err = got_error_from_errno(
590 230a42bd 2019-05-11 jcs "got_object_commit_alloc_partial");
594 291624d8 2018-11-07 stsp memcpy((*commit)->tree_id->sha1, icommit->tree_id,
595 86acc566 2018-04-23 stsp SHA1_DIGEST_LENGTH);
596 291624d8 2018-11-07 stsp (*commit)->author_time = icommit->author_time;
597 291624d8 2018-11-07 stsp (*commit)->author_gmtoff = icommit->author_gmtoff;
598 291624d8 2018-11-07 stsp (*commit)->committer_time = icommit->committer_time;
599 291624d8 2018-11-07 stsp (*commit)->committer_gmtoff = icommit->committer_gmtoff;
601 291624d8 2018-11-07 stsp if (icommit->author_len == 0) {
602 bff6ca00 2018-04-23 stsp (*commit)->author = strdup("");
603 bff6ca00 2018-04-23 stsp if ((*commit)->author == NULL) {
604 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
608 291624d8 2018-11-07 stsp (*commit)->author = malloc(icommit->author_len + 1);
609 bff6ca00 2018-04-23 stsp if ((*commit)->author == NULL) {
610 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
613 291624d8 2018-11-07 stsp memcpy((*commit)->author, imsg.data + len,
614 291624d8 2018-11-07 stsp icommit->author_len);
615 291624d8 2018-11-07 stsp (*commit)->author[icommit->author_len] = '\0';
617 291624d8 2018-11-07 stsp len += icommit->author_len;
619 291624d8 2018-11-07 stsp if (icommit->committer_len == 0) {
620 bff6ca00 2018-04-23 stsp (*commit)->committer = strdup("");
621 bff6ca00 2018-04-23 stsp if ((*commit)->committer == NULL) {
622 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
626 bff6ca00 2018-04-23 stsp (*commit)->committer =
627 291624d8 2018-11-07 stsp malloc(icommit->committer_len + 1);
628 bff6ca00 2018-04-23 stsp if ((*commit)->committer == NULL) {
629 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
632 291624d8 2018-11-07 stsp memcpy((*commit)->committer, imsg.data + len,
633 291624d8 2018-11-07 stsp icommit->committer_len);
634 291624d8 2018-11-07 stsp (*commit)->committer[icommit->committer_len] = '\0';
636 291624d8 2018-11-07 stsp len += icommit->committer_len;
638 291624d8 2018-11-07 stsp if (icommit->logmsg_len == 0) {
639 bff6ca00 2018-04-23 stsp (*commit)->logmsg = strdup("");
640 bff6ca00 2018-04-23 stsp if ((*commit)->logmsg == NULL) {
641 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
645 291624d8 2018-11-07 stsp size_t offset = 0, remain = icommit->logmsg_len;
647 291624d8 2018-11-07 stsp (*commit)->logmsg = malloc(icommit->logmsg_len + 1);
648 bff6ca00 2018-04-23 stsp if ((*commit)->logmsg == NULL) {
649 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
652 c75f7264 2018-09-11 stsp while (remain > 0) {
653 c75f7264 2018-09-11 stsp struct imsg imsg_log;
654 c75f7264 2018-09-11 stsp size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,
657 c75f7264 2018-09-11 stsp err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
659 c75f7264 2018-09-11 stsp return err;
661 c75f7264 2018-09-11 stsp if (imsg_log.hdr.type != GOT_IMSG_COMMIT_LOGMSG)
662 c75f7264 2018-09-11 stsp return got_error(GOT_ERR_PRIVSEP_MSG);
664 c75f7264 2018-09-11 stsp memcpy((*commit)->logmsg + offset,
665 c75f7264 2018-09-11 stsp imsg_log.data, n);
666 c75f7264 2018-09-11 stsp imsg_free(&imsg_log);
667 c75f7264 2018-09-11 stsp offset += n;
668 c75f7264 2018-09-11 stsp remain -= n;
670 291624d8 2018-11-07 stsp (*commit)->logmsg[icommit->logmsg_len] = '\0';
673 291624d8 2018-11-07 stsp for (i = 0; i < icommit->nparents; i++) {
674 79f35eb3 2018-06-11 stsp struct got_object_qid *qid;
676 5df4932d 2018-11-05 stsp err = got_object_qid_alloc_partial(&qid);
679 291624d8 2018-11-07 stsp memcpy(qid->id, imsg.data + len +
680 291624d8 2018-11-07 stsp i * SHA1_DIGEST_LENGTH, sizeof(*qid->id));
681 7762fe12 2018-11-05 stsp SIMPLEQ_INSERT_TAIL(&(*commit)->parent_ids, qid, entry);
682 7762fe12 2018-11-05 stsp (*commit)->nparents++;
686 8c580685 2018-04-22 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
690 2178c42e 2018-04-22 stsp imsg_free(&imsg);
692 e033d803 2018-04-23 stsp return err;
695 e033d803 2018-04-23 stsp const struct got_error *
696 068fd2bf 2018-04-24 stsp got_privsep_send_tree(struct imsgbuf *ibuf, struct got_tree_object *tree)
698 e033d803 2018-04-23 stsp const struct got_error *err = NULL;
699 e033d803 2018-04-23 stsp struct got_imsg_tree_object itree;
700 e033d803 2018-04-23 stsp struct got_tree_entry *te;
701 b00c9821 2018-11-04 stsp size_t totlen;
702 6eb07a17 2018-11-04 stsp int nimsg; /* number of imsg queued in ibuf */
704 883f0469 2018-06-23 stsp itree.nentries = tree->entries.nentries;
705 e033d803 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE, 0, 0, -1, &itree, sizeof(itree))
707 638f9024 2019-05-13 stsp return got_error_from_errno("imsg_compose TREE");
709 b00c9821 2018-11-04 stsp totlen = sizeof(itree);
711 883f0469 2018-06-23 stsp SIMPLEQ_FOREACH(te, &tree->entries.head, entry) {
712 a58a49db 2018-11-07 stsp struct got_imsg_tree_entry *ite;
713 e033d803 2018-04-23 stsp uint8_t *buf = NULL;
714 a58a49db 2018-11-07 stsp size_t len = sizeof(*ite) + strlen(te->name);
716 e033d803 2018-04-23 stsp if (len > MAX_IMSGSIZE)
717 e033d803 2018-04-23 stsp return got_error(GOT_ERR_NO_SPACE);
720 6eb07a17 2018-11-04 stsp if (totlen + len >= MAX_IMSGSIZE - (IMSG_HEADER_SIZE * nimsg)) {
721 b00c9821 2018-11-04 stsp err = flush_imsg(ibuf);
723 b00c9821 2018-11-04 stsp return err;
727 e033d803 2018-04-23 stsp buf = malloc(len);
728 e033d803 2018-04-23 stsp if (buf == NULL)
729 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
731 a58a49db 2018-11-07 stsp ite = (struct got_imsg_tree_entry *)buf;
732 a58a49db 2018-11-07 stsp memcpy(ite->id, te->id->sha1, sizeof(ite->id));
733 a58a49db 2018-11-07 stsp ite->mode = te->mode;
734 a58a49db 2018-11-07 stsp memcpy(buf + sizeof(*ite), te->name, strlen(te->name));
736 e033d803 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE_ENTRY, 0, 0, -1,
737 e033d803 2018-04-23 stsp buf, len) == -1)
738 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose TREE_ENTRY");
741 e033d803 2018-04-23 stsp return err;
742 b00c9821 2018-11-04 stsp totlen += len;
745 b00c9821 2018-11-04 stsp return flush_imsg(ibuf);
748 e033d803 2018-04-23 stsp const struct got_error *
749 068fd2bf 2018-04-24 stsp got_privsep_recv_tree(struct got_tree_object **tree, struct imsgbuf *ibuf)
751 e033d803 2018-04-23 stsp const struct got_error *err = NULL;
752 e033d803 2018-04-23 stsp const size_t min_datalen =
753 e033d803 2018-04-23 stsp MIN(sizeof(struct got_imsg_error),
754 e033d803 2018-04-23 stsp sizeof(struct got_imsg_tree_object));
755 291624d8 2018-11-07 stsp struct got_imsg_tree_object *itree;
756 e033d803 2018-04-23 stsp int nentries = 0;
758 e033d803 2018-04-23 stsp *tree = NULL;
760 e033d803 2018-04-23 stsp err = read_imsg(ibuf);
765 e033d803 2018-04-23 stsp struct imsg imsg;
767 e033d803 2018-04-23 stsp size_t datalen;
768 c0588d8d 2018-11-07 stsp struct got_imsg_tree_entry *ite;
769 e033d803 2018-04-23 stsp struct got_tree_entry *te = NULL;
771 e033d803 2018-04-23 stsp n = imsg_get(ibuf, &imsg);
772 e033d803 2018-04-23 stsp if (n == 0) {
773 883f0469 2018-06-23 stsp if (*tree && (*tree)->entries.nentries != nentries)
774 e033d803 2018-04-23 stsp goto get_more;
778 e033d803 2018-04-23 stsp if (imsg.hdr.len < IMSG_HEADER_SIZE + min_datalen)
779 e033d803 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
781 e033d803 2018-04-23 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
783 e033d803 2018-04-23 stsp switch (imsg.hdr.type) {
784 e033d803 2018-04-23 stsp case GOT_IMSG_ERROR:
785 e033d803 2018-04-23 stsp err = recv_imsg_error(&imsg, datalen);
787 e033d803 2018-04-23 stsp case GOT_IMSG_TREE:
788 e033d803 2018-04-23 stsp /* This message should only appear once. */
789 e033d803 2018-04-23 stsp if (*tree != NULL) {
790 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
793 291624d8 2018-11-07 stsp if (datalen != sizeof(*itree)) {
794 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
797 291624d8 2018-11-07 stsp itree = imsg.data;
798 c3b78ecc 2018-11-07 stsp *tree = malloc(sizeof(**tree));
799 e033d803 2018-04-23 stsp if (*tree == NULL) {
800 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
803 291624d8 2018-11-07 stsp (*tree)->entries.nentries = itree->nentries;
804 883f0469 2018-06-23 stsp SIMPLEQ_INIT(&(*tree)->entries.head);
805 c3b78ecc 2018-11-07 stsp (*tree)->refcnt = 0;
807 e033d803 2018-04-23 stsp case GOT_IMSG_TREE_ENTRY:
808 e033d803 2018-04-23 stsp /* This message should be preceeded by GOT_IMSG_TREE. */
809 e033d803 2018-04-23 stsp if (*tree == NULL) {
810 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
813 c0588d8d 2018-11-07 stsp if (datalen < sizeof(*ite) || datalen > MAX_IMSGSIZE) {
814 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
818 e033d803 2018-04-23 stsp /* Remaining data contains the entry's name. */
819 c0588d8d 2018-11-07 stsp datalen -= sizeof(*ite);
820 e033d803 2018-04-23 stsp if (datalen == 0 || datalen > MAX_IMSGSIZE) {
821 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
824 c0588d8d 2018-11-07 stsp ite = imsg.data;
826 e033d803 2018-04-23 stsp te = got_alloc_tree_entry_partial();
827 e033d803 2018-04-23 stsp if (te == NULL) {
828 638f9024 2019-05-13 stsp err = got_error_from_errno(
829 230a42bd 2019-05-11 jcs "got_alloc_tree_entry_partial");
832 e033d803 2018-04-23 stsp te->name = malloc(datalen + 1);
833 e033d803 2018-04-23 stsp if (te->name == NULL) {
835 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
838 c0588d8d 2018-11-07 stsp memcpy(te->name, imsg.data + sizeof(*ite), datalen);
839 e033d803 2018-04-23 stsp te->name[datalen] = '\0';
841 c0588d8d 2018-11-07 stsp memcpy(te->id->sha1, ite->id, SHA1_DIGEST_LENGTH);
842 c0588d8d 2018-11-07 stsp te->mode = ite->mode;
843 883f0469 2018-06-23 stsp SIMPLEQ_INSERT_TAIL(&(*tree)->entries.head, te, entry);
844 e033d803 2018-04-23 stsp nentries++;
847 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
851 e033d803 2018-04-23 stsp imsg_free(&imsg);
854 883f0469 2018-06-23 stsp if (*tree && (*tree)->entries.nentries != nentries) {
855 1e51f5b9 2018-04-23 stsp if (err == NULL)
856 1e51f5b9 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
857 e033d803 2018-04-23 stsp got_object_tree_close(*tree);
858 e033d803 2018-04-23 stsp *tree = NULL;
861 ff6b18f8 2018-04-24 stsp return err;
864 ff6b18f8 2018-04-24 stsp const struct got_error *
865 ac544f8c 2019-01-13 stsp got_privsep_send_blob(struct imsgbuf *ibuf, size_t size, size_t hdrlen,
866 ac544f8c 2019-01-13 stsp const uint8_t *data)
868 2967a784 2018-04-24 stsp struct got_imsg_blob iblob;
870 2967a784 2018-04-24 stsp iblob.size = size;
871 ebc55e2d 2018-12-24 stsp iblob.hdrlen = hdrlen;
873 ac544f8c 2019-01-13 stsp if (data) {
874 ac544f8c 2019-01-13 stsp uint8_t *buf;
876 ac544f8c 2019-01-13 stsp if (size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX)
877 ac544f8c 2019-01-13 stsp return got_error(GOT_ERR_NO_SPACE);
879 ac544f8c 2019-01-13 stsp buf = malloc(sizeof(iblob) + size);
880 ac544f8c 2019-01-13 stsp if (buf == NULL)
881 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
883 ac544f8c 2019-01-13 stsp memcpy(buf, &iblob, sizeof(iblob));
884 ac544f8c 2019-01-13 stsp memcpy(buf + sizeof(iblob), data, size);
885 ac544f8c 2019-01-13 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, buf,
886 ac544f8c 2019-01-13 stsp sizeof(iblob) + size) == -1) {
888 638f9024 2019-05-13 stsp return got_error_from_errno("imsg_compose BLOB");
892 ac544f8c 2019-01-13 stsp /* Data has already been written to file descriptor. */
893 ac544f8c 2019-01-13 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, &iblob,
894 ac544f8c 2019-01-13 stsp sizeof(iblob)) == -1)
895 638f9024 2019-05-13 stsp return got_error_from_errno("imsg_compose BLOB");
899 ff6b18f8 2018-04-24 stsp return flush_imsg(ibuf);
902 ff6b18f8 2018-04-24 stsp const struct got_error *
903 ac544f8c 2019-01-13 stsp got_privsep_recv_blob(uint8_t **outbuf, size_t *size, size_t *hdrlen,
904 ac544f8c 2019-01-13 stsp struct imsgbuf *ibuf)
906 ff6b18f8 2018-04-24 stsp const struct got_error *err = NULL;
907 ff6b18f8 2018-04-24 stsp struct imsg imsg;
908 291624d8 2018-11-07 stsp struct got_imsg_blob *iblob;
909 ff6b18f8 2018-04-24 stsp size_t datalen;
911 ac544f8c 2019-01-13 stsp *outbuf = NULL;
913 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, ibuf, 0);
915 ff6b18f8 2018-04-24 stsp return err;
917 ff6b18f8 2018-04-24 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
919 ff6b18f8 2018-04-24 stsp switch (imsg.hdr.type) {
920 ff6b18f8 2018-04-24 stsp case GOT_IMSG_BLOB:
921 ac544f8c 2019-01-13 stsp if (datalen < sizeof(*iblob)) {
922 ff6b18f8 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
925 291624d8 2018-11-07 stsp iblob = imsg.data;
926 291624d8 2018-11-07 stsp *size = iblob->size;
927 ebc55e2d 2018-12-24 stsp *hdrlen = iblob->hdrlen;
929 ac544f8c 2019-01-13 stsp if (datalen == sizeof(*iblob)) {
930 ac544f8c 2019-01-13 stsp /* Data has been written to file descriptor. */
934 ac544f8c 2019-01-13 stsp if (*size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX) {
935 ac544f8c 2019-01-13 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
939 ac544f8c 2019-01-13 stsp *outbuf = malloc(*size);
940 ac544f8c 2019-01-13 stsp if (*outbuf == NULL) {
941 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
944 ac544f8c 2019-01-13 stsp memcpy(*outbuf, imsg.data + sizeof(*iblob), *size);
947 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
951 f4a881ce 2018-11-17 stsp imsg_free(&imsg);
953 f4a881ce 2018-11-17 stsp return err;
956 f4a881ce 2018-11-17 stsp static const struct got_error *
957 f4a881ce 2018-11-17 stsp send_tagmsg(struct imsgbuf *ibuf, struct got_tag_object *tag, size_t tagmsg_len)
959 f4a881ce 2018-11-17 stsp const struct got_error *err = NULL;
960 f4a881ce 2018-11-17 stsp size_t offset, remain;
962 f4a881ce 2018-11-17 stsp offset = 0;
963 f4a881ce 2018-11-17 stsp remain = tagmsg_len;
964 f4a881ce 2018-11-17 stsp while (remain > 0) {
965 f4a881ce 2018-11-17 stsp size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain);
967 f4a881ce 2018-11-17 stsp if (imsg_compose(ibuf, GOT_IMSG_TAG_TAGMSG, 0, 0, -1,
968 f4a881ce 2018-11-17 stsp tag->tagmsg + offset, n) == -1) {
969 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose TAG_TAGMSG");
973 f4a881ce 2018-11-17 stsp err = flush_imsg(ibuf);
977 f4a881ce 2018-11-17 stsp offset += n;
978 f4a881ce 2018-11-17 stsp remain -= n;
981 f4a881ce 2018-11-17 stsp return err;
984 f4a881ce 2018-11-17 stsp const struct got_error *
985 f4a881ce 2018-11-17 stsp got_privsep_send_tag(struct imsgbuf *ibuf, struct got_tag_object *tag)
987 f4a881ce 2018-11-17 stsp const struct got_error *err = NULL;
988 f4a881ce 2018-11-17 stsp struct got_imsg_tag_object *itag;
989 f4a881ce 2018-11-17 stsp uint8_t *buf;
990 f4a881ce 2018-11-17 stsp size_t len, total;
991 f4a881ce 2018-11-17 stsp size_t tag_len = strlen(tag->tag);
992 f4a881ce 2018-11-17 stsp size_t tagger_len = strlen(tag->tagger);
993 f4a881ce 2018-11-17 stsp size_t tagmsg_len = strlen(tag->tagmsg);
995 f4a881ce 2018-11-17 stsp total = sizeof(*itag) + tag_len + tagger_len + tagmsg_len;
997 f4a881ce 2018-11-17 stsp buf = malloc(total);
998 f4a881ce 2018-11-17 stsp if (buf == NULL)
999 638f9024 2019-05-13 stsp return got_error_from_errno("malloc");
1001 f4a881ce 2018-11-17 stsp itag = (struct got_imsg_tag_object *)buf;
1002 f4a881ce 2018-11-17 stsp memcpy(itag->id, tag->id.sha1, sizeof(itag->id));
1003 f4a881ce 2018-11-17 stsp itag->obj_type = tag->obj_type;
1004 f4a881ce 2018-11-17 stsp itag->tag_len = tag_len;
1005 f4a881ce 2018-11-17 stsp itag->tagger_len = tagger_len;
1006 f4a881ce 2018-11-17 stsp itag->tagger_time = tag->tagger_time;
1007 f4a881ce 2018-11-17 stsp itag->tagger_gmtoff = tag->tagger_gmtoff;
1008 f4a881ce 2018-11-17 stsp itag->tagmsg_len = tagmsg_len;
1010 f4a881ce 2018-11-17 stsp len = sizeof(*itag);
1011 f4a881ce 2018-11-17 stsp memcpy(buf + len, tag->tag, tag_len);
1012 f4a881ce 2018-11-17 stsp len += tag_len;
1013 f4a881ce 2018-11-17 stsp memcpy(buf + len, tag->tagger, tagger_len);
1014 f4a881ce 2018-11-17 stsp len += tagger_len;
1016 f4a881ce 2018-11-17 stsp if (imsg_compose(ibuf, GOT_IMSG_TAG, 0, 0, -1, buf, len) == -1) {
1017 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose TAG");
1018 f4a881ce 2018-11-17 stsp goto done;
1021 f4a881ce 2018-11-17 stsp if (tagmsg_len == 0 ||
1022 f4a881ce 2018-11-17 stsp tagmsg_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
1023 f4a881ce 2018-11-17 stsp err = flush_imsg(ibuf);
1025 f4a881ce 2018-11-17 stsp goto done;
1027 f4a881ce 2018-11-17 stsp err = send_tagmsg(ibuf, tag, tagmsg_len);
1029 f4a881ce 2018-11-17 stsp free(buf);
1030 f4a881ce 2018-11-17 stsp return err;
1033 f4a881ce 2018-11-17 stsp const struct got_error *
1034 f4a881ce 2018-11-17 stsp got_privsep_recv_tag(struct got_tag_object **tag, struct imsgbuf *ibuf)
1036 f4a881ce 2018-11-17 stsp const struct got_error *err = NULL;
1037 f4a881ce 2018-11-17 stsp struct imsg imsg;
1038 f4a881ce 2018-11-17 stsp struct got_imsg_tag_object *itag;
1039 f4a881ce 2018-11-17 stsp size_t len, datalen;
1040 f4a881ce 2018-11-17 stsp const size_t min_datalen =
1041 f4a881ce 2018-11-17 stsp MIN(sizeof(struct got_imsg_error),
1042 f4a881ce 2018-11-17 stsp sizeof(struct got_imsg_tag_object));
1044 f4a881ce 2018-11-17 stsp *tag = NULL;
1046 f4a881ce 2018-11-17 stsp err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1048 f4a881ce 2018-11-17 stsp return err;
1050 f4a881ce 2018-11-17 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1053 f4a881ce 2018-11-17 stsp switch (imsg.hdr.type) {
1054 f4a881ce 2018-11-17 stsp case GOT_IMSG_TAG:
1055 f4a881ce 2018-11-17 stsp if (datalen < sizeof(*itag)) {
1056 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
1059 f4a881ce 2018-11-17 stsp itag = imsg.data;
1060 f4a881ce 2018-11-17 stsp if (datalen != sizeof(*itag) + itag->tag_len +
1061 f4a881ce 2018-11-17 stsp itag->tagger_len) {
1062 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
1065 f4a881ce 2018-11-17 stsp len += sizeof(*itag);
1067 f4a881ce 2018-11-17 stsp *tag = calloc(1, sizeof(**tag));
1068 f4a881ce 2018-11-17 stsp if (*tag == NULL) {
1069 638f9024 2019-05-13 stsp err = got_error_from_errno("calloc");
1073 f4a881ce 2018-11-17 stsp memcpy((*tag)->id.sha1, itag->id, SHA1_DIGEST_LENGTH);
1075 f4a881ce 2018-11-17 stsp if (itag->tag_len == 0) {
1076 f4a881ce 2018-11-17 stsp (*tag)->tag = strdup("");
1077 f4a881ce 2018-11-17 stsp if ((*tag)->tag == NULL) {
1078 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
1082 f4a881ce 2018-11-17 stsp (*tag)->tag = malloc(itag->tag_len + 1);
1083 f4a881ce 2018-11-17 stsp if ((*tag)->tag == NULL) {
1084 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
1087 f4a881ce 2018-11-17 stsp memcpy((*tag)->tag, imsg.data + len,
1088 f4a881ce 2018-11-17 stsp itag->tag_len);
1089 f4a881ce 2018-11-17 stsp (*tag)->tag[itag->tag_len] = '\0';
1091 f4a881ce 2018-11-17 stsp len += itag->tag_len;
1093 f4a881ce 2018-11-17 stsp (*tag)->obj_type = itag->obj_type;
1094 f4a881ce 2018-11-17 stsp (*tag)->tagger_time = itag->tagger_time;
1095 f4a881ce 2018-11-17 stsp (*tag)->tagger_gmtoff = itag->tagger_gmtoff;
1097 f4a881ce 2018-11-17 stsp if (itag->tagger_len == 0) {
1098 f4a881ce 2018-11-17 stsp (*tag)->tagger = strdup("");
1099 f4a881ce 2018-11-17 stsp if ((*tag)->tagger == NULL) {
1100 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
1104 f4a881ce 2018-11-17 stsp (*tag)->tagger = malloc(itag->tagger_len + 1);
1105 f4a881ce 2018-11-17 stsp if ((*tag)->tagger == NULL) {
1106 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
1109 f4a881ce 2018-11-17 stsp memcpy((*tag)->tagger, imsg.data + len,
1110 f4a881ce 2018-11-17 stsp itag->tagger_len);
1111 f4a881ce 2018-11-17 stsp (*tag)->tagger[itag->tagger_len] = '\0';
1113 f4a881ce 2018-11-17 stsp len += itag->tagger_len;
1115 f4a881ce 2018-11-17 stsp if (itag->tagmsg_len == 0) {
1116 f4a881ce 2018-11-17 stsp (*tag)->tagmsg = strdup("");
1117 f4a881ce 2018-11-17 stsp if ((*tag)->tagmsg == NULL) {
1118 638f9024 2019-05-13 stsp err = got_error_from_errno("strdup");
1122 f4a881ce 2018-11-17 stsp size_t offset = 0, remain = itag->tagmsg_len;
1124 f4a881ce 2018-11-17 stsp (*tag)->tagmsg = malloc(itag->tagmsg_len + 1);
1125 f4a881ce 2018-11-17 stsp if ((*tag)->tagmsg == NULL) {
1126 638f9024 2019-05-13 stsp err = got_error_from_errno("malloc");
1129 f4a881ce 2018-11-17 stsp while (remain > 0) {
1130 f4a881ce 2018-11-17 stsp struct imsg imsg_log;
1131 f4a881ce 2018-11-17 stsp size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,
1134 f4a881ce 2018-11-17 stsp err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
1136 f4a881ce 2018-11-17 stsp return err;
1138 f4a881ce 2018-11-17 stsp if (imsg_log.hdr.type != GOT_IMSG_TAG_TAGMSG)
1139 f4a881ce 2018-11-17 stsp return got_error(GOT_ERR_PRIVSEP_MSG);
1141 f4a881ce 2018-11-17 stsp memcpy((*tag)->tagmsg + offset, imsg_log.data,
1143 f4a881ce 2018-11-17 stsp imsg_free(&imsg_log);
1144 f4a881ce 2018-11-17 stsp offset += n;
1145 f4a881ce 2018-11-17 stsp remain -= n;
1147 f4a881ce 2018-11-17 stsp (*tag)->tagmsg[itag->tagmsg_len] = '\0';
1152 ff6b18f8 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
1156 ff6b18f8 2018-04-24 stsp imsg_free(&imsg);
1158 2178c42e 2018-04-22 stsp return err;
1161 876c234b 2018-09-10 stsp const struct got_error *
1162 876c234b 2018-09-10 stsp got_privsep_init_pack_child(struct imsgbuf *ibuf, struct got_pack *pack,
1163 876c234b 2018-09-10 stsp struct got_packidx *packidx)
1165 41496140 2019-02-21 stsp const struct got_error *err = NULL;
1166 876c234b 2018-09-10 stsp struct got_imsg_packidx ipackidx;
1167 876c234b 2018-09-10 stsp struct got_imsg_pack ipack;
1170 876c234b 2018-09-10 stsp ipackidx.len = packidx->len;
1171 876c234b 2018-09-10 stsp fd = dup(packidx->fd);
1172 876c234b 2018-09-10 stsp if (fd == -1)
1173 638f9024 2019-05-13 stsp return got_error_from_errno("dup");
1175 876c234b 2018-09-10 stsp if (imsg_compose(ibuf, GOT_IMSG_PACKIDX, 0, 0, fd, &ipackidx,
1176 41496140 2019-02-21 stsp sizeof(ipackidx)) == -1) {
1177 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose PACKIDX");
1178 41496140 2019-02-21 stsp close(fd);
1179 41496140 2019-02-21 stsp return err;
1182 876c234b 2018-09-10 stsp if (strlcpy(ipack.path_packfile, pack->path_packfile,
1183 876c234b 2018-09-10 stsp sizeof(ipack.path_packfile)) >= sizeof(ipack.path_packfile))
1184 876c234b 2018-09-10 stsp return got_error(GOT_ERR_NO_SPACE);
1185 876c234b 2018-09-10 stsp ipack.filesize = pack->filesize;
1187 876c234b 2018-09-10 stsp fd = dup(pack->fd);
1188 876c234b 2018-09-10 stsp if (fd == -1)
1189 638f9024 2019-05-13 stsp return got_error_from_errno("dup");
1191 876c234b 2018-09-10 stsp if (imsg_compose(ibuf, GOT_IMSG_PACK, 0, 0, fd, &ipack, sizeof(ipack))
1193 638f9024 2019-05-13 stsp err = got_error_from_errno("imsg_compose PACK");
1194 41496140 2019-02-21 stsp close(fd);
1195 41496140 2019-02-21 stsp return err;
1198 876c234b 2018-09-10 stsp return flush_imsg(ibuf);
1201 876c234b 2018-09-10 stsp const struct got_error *
1202 106807b4 2018-09-15 stsp got_privsep_send_packed_obj_req(struct imsgbuf *ibuf, int idx,
1203 106807b4 2018-09-15 stsp struct got_object_id *id)
1205 876c234b 2018-09-10 stsp struct got_imsg_packed_object iobj;
1207 876c234b 2018-09-10 stsp iobj.idx = idx;
1208 106807b4 2018-09-15 stsp memcpy(iobj.id, id->sha1, sizeof(iobj.id));
1210 876c234b 2018-09-10 stsp if (imsg_compose(ibuf, GOT_IMSG_PACKED_OBJECT_REQUEST, 0, 0, -1,
1211 876c234b 2018-09-10 stsp &iobj, sizeof(iobj)) == -1)
1212 638f9024 2019-05-13 stsp return got_error_from_errno("imsg_compose "
1213 230a42bd 2019-05-11 jcs "PACKED_OBJECT_REQUEST");
1215 876c234b 2018-09-10 stsp return flush_imsg(ibuf);
1218 63219cd2 2019-01-04 stsp const struct got_error *
1219 63219cd2 2019-01-04 stsp got_privsep_unveil_exec_helpers(void)
1221 c39c25dd 2019-08-09 stsp const char *helpers[] = {
1222 c39c25dd 2019-08-09 stsp GOT_PATH_PROG_READ_PACK,
1223 c39c25dd 2019-08-09 stsp GOT_PATH_PROG_READ_OBJECT,
1224 c39c25dd 2019-08-09 stsp GOT_PATH_PROG_READ_COMMIT,
1225 c39c25dd 2019-08-09 stsp GOT_PATH_PROG_READ_TREE,
1226 c39c25dd 2019-08-09 stsp GOT_PATH_PROG_READ_BLOB,
1227 c39c25dd 2019-08-09 stsp GOT_PATH_PROG_READ_TAG,
1231 c39c25dd 2019-08-09 stsp for (i = 0; i < nitems(helpers); i++) {
1232 c39c25dd 2019-08-09 stsp if (unveil(helpers[i], "x") == 0)
1234 c39c25dd 2019-08-09 stsp return got_error_from_errno2("unveil", helpers[i]);
1237 63219cd2 2019-01-04 stsp return NULL;
