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 2178c42e 2018-04-22 stsp static const struct got_error *
50 2178c42e 2018-04-22 stsp poll_fd(int fd, int events, int timeout)
52 2178c42e 2018-04-22 stsp struct pollfd pfd[1];
55 2178c42e 2018-04-22 stsp pfd[0].fd = fd;
56 2178c42e 2018-04-22 stsp pfd[0].events = events;
58 2178c42e 2018-04-22 stsp n = poll(pfd, 1, timeout);
59 2178c42e 2018-04-22 stsp if (n == -1)
60 2178c42e 2018-04-22 stsp return got_error_from_errno();
62 2178c42e 2018-04-22 stsp return got_error(GOT_ERR_TIMEOUT);
63 2178c42e 2018-04-22 stsp if (pfd[0].revents & (POLLERR | POLLNVAL))
64 2178c42e 2018-04-22 stsp return got_error_from_errno();
65 2178c42e 2018-04-22 stsp if (pfd[0].revents & (events | POLLHUP))
66 2178c42e 2018-04-22 stsp return NULL;
68 2178c42e 2018-04-22 stsp return got_error(GOT_ERR_INTERRUPT);
71 c4eae628 2018-04-23 stsp static const struct got_error *
72 e033d803 2018-04-23 stsp read_imsg(struct imsgbuf *ibuf)
74 fe36cf76 2018-04-23 stsp const struct got_error *err;
77 fe36cf76 2018-04-23 stsp err = poll_fd(ibuf->fd, POLLIN, INFTIM);
81 fe36cf76 2018-04-23 stsp n = imsg_read(ibuf);
82 fe36cf76 2018-04-23 stsp if (n == -1) {
83 fe36cf76 2018-04-23 stsp if (errno == EAGAIN) /* Could be a file-descriptor leak. */
84 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_NO_FD);
85 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_READ);
88 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_PIPE);
90 e033d803 2018-04-23 stsp return NULL;
93 ad242220 2018-09-08 stsp const struct got_error *
94 876c234b 2018-09-10 stsp got_privsep_wait_for_child(pid_t pid)
96 876c234b 2018-09-10 stsp int child_status;
98 876c234b 2018-09-10 stsp waitpid(pid, &child_status, 0);
100 876c234b 2018-09-10 stsp if (!WIFEXITED(child_status))
101 876c234b 2018-09-10 stsp return got_error(GOT_ERR_PRIVSEP_DIED);
103 876c234b 2018-09-10 stsp if (WEXITSTATUS(child_status) != 0)
104 876c234b 2018-09-10 stsp return got_error(GOT_ERR_PRIVSEP_EXIT);
106 876c234b 2018-09-10 stsp return NULL;
109 73b7854a 2018-11-11 stsp static const struct got_error *
110 73b7854a 2018-11-11 stsp recv_imsg_error(struct imsg *imsg, size_t datalen)
112 73b7854a 2018-11-11 stsp struct got_imsg_error *ierr;
114 73b7854a 2018-11-11 stsp if (datalen != sizeof(*ierr))
115 73b7854a 2018-11-11 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
117 73b7854a 2018-11-11 stsp ierr = imsg->data;
118 73b7854a 2018-11-11 stsp if (ierr->code == GOT_ERR_ERRNO) {
119 73b7854a 2018-11-11 stsp static struct got_error serr;
120 73b7854a 2018-11-11 stsp serr.code = GOT_ERR_ERRNO;
121 73b7854a 2018-11-11 stsp serr.msg = strerror(ierr->errno_code);
122 73b7854a 2018-11-11 stsp return &serr;
125 73b7854a 2018-11-11 stsp return got_error(ierr->code);
128 876c234b 2018-09-10 stsp const struct got_error *
129 46de5bfd 2018-11-11 stsp got_privsep_recv_imsg(struct imsg *imsg, struct imsgbuf *ibuf,
130 46de5bfd 2018-11-11 stsp size_t min_datalen)
132 e033d803 2018-04-23 stsp const struct got_error *err;
135 e033d803 2018-04-23 stsp n = imsg_get(ibuf, imsg);
136 876c234b 2018-09-10 stsp if (n == -1)
137 876c234b 2018-09-10 stsp return got_error_from_errno();
139 876c234b 2018-09-10 stsp while (n == 0) {
140 876c234b 2018-09-10 stsp err = read_imsg(ibuf);
142 876c234b 2018-09-10 stsp return err;
143 876c234b 2018-09-10 stsp n = imsg_get(ibuf, imsg);
146 fe36cf76 2018-04-23 stsp if (imsg->hdr.len < IMSG_HEADER_SIZE + min_datalen)
147 c4eae628 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
149 73b7854a 2018-11-11 stsp if (imsg->hdr.type == GOT_IMSG_ERROR) {
150 73b7854a 2018-11-11 stsp size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
151 73b7854a 2018-11-11 stsp return recv_imsg_error(imsg, datalen);
154 73b7854a 2018-11-11 stsp return NULL;
157 2178c42e 2018-04-22 stsp /* Attempt to send an error in an imsg. Complain on stderr as a last resort. */
159 2178c42e 2018-04-22 stsp got_privsep_send_error(struct imsgbuf *ibuf, const struct got_error *err)
161 2178c42e 2018-04-22 stsp const struct got_error *poll_err;
162 2178c42e 2018-04-22 stsp struct got_imsg_error ierr;
165 2178c42e 2018-04-22 stsp ierr.code = err->code;
166 2178c42e 2018-04-22 stsp if (err->code == GOT_ERR_ERRNO)
167 2178c42e 2018-04-22 stsp ierr.errno_code = errno;
169 2178c42e 2018-04-22 stsp ierr.errno_code = 0;
170 2178c42e 2018-04-22 stsp ret = imsg_compose(ibuf, GOT_IMSG_ERROR, 0, 0, -1, &ierr, sizeof(ierr));
171 e93cd828 2018-11-11 stsp if (ret == -1) {
172 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": imsg_compose: %s\n",
173 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, strerror(errno));
177 2178c42e 2018-04-22 stsp poll_err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
178 5d43e84d 2018-04-23 stsp if (poll_err) {
179 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": poll: %s\n",
180 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, poll_err->msg);
184 2178c42e 2018-04-22 stsp ret = imsg_flush(ibuf);
185 5d43e84d 2018-04-23 stsp if (ret == -1) {
186 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": imsg_flush: %s\n",
187 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, strerror(errno));
192 e033d803 2018-04-23 stsp static const struct got_error *
193 e033d803 2018-04-23 stsp flush_imsg(struct imsgbuf *ibuf)
195 e033d803 2018-04-23 stsp const struct got_error *err;
197 e033d803 2018-04-23 stsp err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
199 e033d803 2018-04-23 stsp return err;
201 e033d803 2018-04-23 stsp if (imsg_flush(ibuf) == -1)
202 e033d803 2018-04-23 stsp return got_error_from_errno();
204 e033d803 2018-04-23 stsp return NULL;
207 ad242220 2018-09-08 stsp const struct got_error *
208 ad242220 2018-09-08 stsp got_privsep_send_stop(int fd)
210 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
211 ad242220 2018-09-08 stsp struct imsgbuf ibuf;
213 ad242220 2018-09-08 stsp imsg_init(&ibuf, fd);
215 ad242220 2018-09-08 stsp if (imsg_compose(&ibuf, GOT_IMSG_STOP, 0, 0, -1, NULL, 0) == -1)
216 ad242220 2018-09-08 stsp return got_error_from_errno();
218 ad242220 2018-09-08 stsp err = flush_imsg(&ibuf);
219 ad242220 2018-09-08 stsp imsg_clear(&ibuf);
220 ad242220 2018-09-08 stsp return err;
223 ad242220 2018-09-08 stsp const struct got_error *
224 aea5f015 2018-12-24 stsp got_privsep_send_obj_req(struct imsgbuf *ibuf, int fd)
226 aea5f015 2018-12-24 stsp if (imsg_compose(ibuf, GOT_IMSG_OBJECT_REQUEST, 0, 0, fd, NULL, 0)
228 1785f84a 2018-12-23 stsp return got_error_from_errno();
230 1785f84a 2018-12-23 stsp return flush_imsg(ibuf);
233 1785f84a 2018-12-23 stsp const struct got_error *
234 1785f84a 2018-12-23 stsp got_privsep_send_commit_req(struct imsgbuf *ibuf, int fd,
235 1785f84a 2018-12-23 stsp struct got_object_id *id, int pack_idx)
237 41496140 2019-02-21 stsp const struct got_error *err = NULL;
238 1785f84a 2018-12-23 stsp struct got_imsg_packed_object iobj, *iobjp;
239 1785f84a 2018-12-23 stsp size_t len;
241 1785f84a 2018-12-23 stsp if (id) { /* commit is packed */
242 1785f84a 2018-12-23 stsp iobj.idx = pack_idx;
243 1785f84a 2018-12-23 stsp memcpy(iobj.id, id->sha1, sizeof(iobj.id));
244 1785f84a 2018-12-23 stsp iobjp = &iobj;
245 1785f84a 2018-12-23 stsp len = sizeof(iobj);
247 1785f84a 2018-12-23 stsp iobjp = NULL;
251 1785f84a 2018-12-23 stsp if (imsg_compose(ibuf, GOT_IMSG_COMMIT_REQUEST, 0, 0, fd, iobjp, len)
253 41496140 2019-02-21 stsp err = got_error_from_errno();
255 41496140 2019-02-21 stsp return err;
258 13c729f7 2018-12-24 stsp return flush_imsg(ibuf);
261 13c729f7 2018-12-24 stsp const struct got_error *
262 13c729f7 2018-12-24 stsp got_privsep_send_tree_req(struct imsgbuf *ibuf, int fd,
263 13c729f7 2018-12-24 stsp struct got_object_id *id, int pack_idx)
265 41496140 2019-02-21 stsp const struct got_error *err = NULL;
266 13c729f7 2018-12-24 stsp struct got_imsg_packed_object iobj, *iobjp;
267 13c729f7 2018-12-24 stsp size_t len;
269 13c729f7 2018-12-24 stsp if (id) { /* tree is packed */
270 13c729f7 2018-12-24 stsp iobj.idx = pack_idx;
271 13c729f7 2018-12-24 stsp memcpy(iobj.id, id->sha1, sizeof(iobj.id));
272 13c729f7 2018-12-24 stsp iobjp = &iobj;
273 13c729f7 2018-12-24 stsp len = sizeof(iobj);
275 13c729f7 2018-12-24 stsp iobjp = NULL;
279 13c729f7 2018-12-24 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE_REQUEST, 0, 0, fd, iobjp, len)
281 41496140 2019-02-21 stsp err = got_error_from_errno();
283 41496140 2019-02-21 stsp return err;
286 268f7291 2018-12-24 stsp return flush_imsg(ibuf);
289 268f7291 2018-12-24 stsp const struct got_error *
290 268f7291 2018-12-24 stsp got_privsep_send_tag_req(struct imsgbuf *ibuf, int fd,
291 268f7291 2018-12-24 stsp struct got_object_id *id, int pack_idx)
293 268f7291 2018-12-24 stsp struct got_imsg_packed_object iobj, *iobjp;
294 268f7291 2018-12-24 stsp size_t len;
296 268f7291 2018-12-24 stsp if (id) { /* tag is packed */
297 268f7291 2018-12-24 stsp iobj.idx = pack_idx;
298 268f7291 2018-12-24 stsp memcpy(iobj.id, id->sha1, sizeof(iobj.id));
299 268f7291 2018-12-24 stsp iobjp = &iobj;
300 268f7291 2018-12-24 stsp len = sizeof(iobj);
302 268f7291 2018-12-24 stsp iobjp = NULL;
306 268f7291 2018-12-24 stsp if (imsg_compose(ibuf, GOT_IMSG_TAG_REQUEST, 0, 0, fd, iobjp, len)
308 7762fe12 2018-11-05 stsp return got_error_from_errno();
310 7762fe12 2018-11-05 stsp return flush_imsg(ibuf);
313 7762fe12 2018-11-05 stsp const struct got_error *
314 ebc55e2d 2018-12-24 stsp got_privsep_send_blob_req(struct imsgbuf *ibuf, int infd,
315 ebc55e2d 2018-12-24 stsp struct got_object_id *id, int pack_idx)
317 41496140 2019-02-21 stsp const struct got_error *err = NULL;
318 ebc55e2d 2018-12-24 stsp struct got_imsg_packed_object iobj, *iobjp;
319 ebc55e2d 2018-12-24 stsp size_t len;
321 ebc55e2d 2018-12-24 stsp if (id) { /* blob is packed */
322 ebc55e2d 2018-12-24 stsp iobj.idx = pack_idx;
323 ebc55e2d 2018-12-24 stsp memcpy(iobj.id, id->sha1, sizeof(iobj.id));
324 ebc55e2d 2018-12-24 stsp iobjp = &iobj;
325 ebc55e2d 2018-12-24 stsp len = sizeof(iobj);
327 ebc55e2d 2018-12-24 stsp iobjp = NULL;
331 ebc55e2d 2018-12-24 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB_REQUEST, 0, 0, infd, iobjp, len)
333 41496140 2019-02-21 stsp err = got_error_from_errno();
334 41496140 2019-02-21 stsp close(infd);
335 41496140 2019-02-21 stsp return err;
338 55da3778 2018-09-10 stsp return flush_imsg(ibuf);
341 55da3778 2018-09-10 stsp const struct got_error *
342 55da3778 2018-09-10 stsp got_privsep_send_blob_outfd(struct imsgbuf *ibuf, int outfd)
344 41496140 2019-02-21 stsp const struct got_error *err = NULL;
346 ad242220 2018-09-08 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB_OUTFD, 0, 0, outfd, NULL, 0)
348 41496140 2019-02-21 stsp err = got_error_from_errno();
349 41496140 2019-02-21 stsp close(outfd);
350 41496140 2019-02-21 stsp return err;
353 3840f4c9 2018-09-12 stsp return flush_imsg(ibuf);
356 3840f4c9 2018-09-12 stsp const struct got_error *
357 3840f4c9 2018-09-12 stsp got_privsep_send_tmpfd(struct imsgbuf *ibuf, int fd)
359 41496140 2019-02-21 stsp const struct got_error *err = NULL;
361 3840f4c9 2018-09-12 stsp if (imsg_compose(ibuf, GOT_IMSG_TMPFD, 0, 0, fd, NULL, 0)
363 41496140 2019-02-21 stsp err = got_error_from_errno();
365 41496140 2019-02-21 stsp return err;
368 ad242220 2018-09-08 stsp return flush_imsg(ibuf);
371 ad242220 2018-09-08 stsp const struct got_error *
372 876c234b 2018-09-10 stsp got_privsep_send_obj(struct imsgbuf *ibuf, struct got_object *obj)
374 2178c42e 2018-04-22 stsp struct got_imsg_object iobj;
376 c59b3346 2018-09-11 stsp memcpy(iobj.id, obj->id.sha1, sizeof(iobj.id));
377 2178c42e 2018-04-22 stsp iobj.type = obj->type;
378 2178c42e 2018-04-22 stsp iobj.flags = obj->flags;
379 2178c42e 2018-04-22 stsp iobj.hdrlen = obj->hdrlen;
380 2178c42e 2018-04-22 stsp iobj.size = obj->size;
381 c59b3346 2018-09-11 stsp if (iobj.flags & GOT_OBJ_FLAG_PACKED) {
382 876c234b 2018-09-10 stsp iobj.pack_offset = obj->pack_offset;
383 c59b3346 2018-09-11 stsp iobj.pack_idx = obj->pack_idx;
386 2178c42e 2018-04-22 stsp if (imsg_compose(ibuf, GOT_IMSG_OBJECT, 0, 0, -1, &iobj, sizeof(iobj))
388 2178c42e 2018-04-22 stsp return got_error_from_errno();
390 c59b3346 2018-09-11 stsp return flush_imsg(ibuf);
393 cfd633c2 2018-09-10 stsp const struct got_error *
394 cfd633c2 2018-09-10 stsp got_privsep_get_imsg_obj(struct got_object **obj, struct imsg *imsg,
395 cfd633c2 2018-09-10 stsp struct imsgbuf *ibuf)
397 cfd633c2 2018-09-10 stsp const struct got_error *err = NULL;
398 291624d8 2018-11-07 stsp struct got_imsg_object *iobj;
399 cfd633c2 2018-09-10 stsp size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
401 291624d8 2018-11-07 stsp if (datalen != sizeof(*iobj))
402 cfd633c2 2018-09-10 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
403 291624d8 2018-11-07 stsp iobj = imsg->data;
405 cfd633c2 2018-09-10 stsp *obj = calloc(1, sizeof(**obj));
406 cfd633c2 2018-09-10 stsp if (*obj == NULL)
407 cfd633c2 2018-09-10 stsp return got_error_from_errno();
409 291624d8 2018-11-07 stsp memcpy((*obj)->id.sha1, iobj->id, SHA1_DIGEST_LENGTH);
410 291624d8 2018-11-07 stsp (*obj)->type = iobj->type;
411 291624d8 2018-11-07 stsp (*obj)->flags = iobj->flags;
412 291624d8 2018-11-07 stsp (*obj)->hdrlen = iobj->hdrlen;
413 291624d8 2018-11-07 stsp (*obj)->size = iobj->size;
414 c59b3346 2018-09-11 stsp /* path_packfile is handled by caller */
415 291624d8 2018-11-07 stsp if (iobj->flags & GOT_OBJ_FLAG_PACKED) {
416 291624d8 2018-11-07 stsp (*obj)->pack_offset = iobj->pack_offset;
417 291624d8 2018-11-07 stsp (*obj)->pack_idx = iobj->pack_idx;
420 876c234b 2018-09-10 stsp return err;
423 2178c42e 2018-04-22 stsp const struct got_error *
424 2178c42e 2018-04-22 stsp got_privsep_recv_obj(struct got_object **obj, struct imsgbuf *ibuf)
426 2178c42e 2018-04-22 stsp const struct got_error *err = NULL;
427 2178c42e 2018-04-22 stsp struct imsg imsg;
428 2178c42e 2018-04-22 stsp size_t datalen;
429 c4eae628 2018-04-23 stsp const size_t min_datalen =
430 c4eae628 2018-04-23 stsp MIN(sizeof(struct got_imsg_error), sizeof(struct got_imsg_object));
432 2178c42e 2018-04-22 stsp *obj = NULL;
434 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
436 2178c42e 2018-04-22 stsp return err;
438 2178c42e 2018-04-22 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
440 2178c42e 2018-04-22 stsp switch (imsg.hdr.type) {
441 2178c42e 2018-04-22 stsp case GOT_IMSG_OBJECT:
442 cfd633c2 2018-09-10 stsp err = got_privsep_get_imsg_obj(obj, &imsg, ibuf);
445 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
449 bff6ca00 2018-04-23 stsp imsg_free(&imsg);
451 bff6ca00 2018-04-23 stsp return err;
454 c75f7264 2018-09-11 stsp static const struct got_error *
455 c75f7264 2018-09-11 stsp send_commit_logmsg(struct imsgbuf *ibuf, struct got_commit_object *commit,
456 c75f7264 2018-09-11 stsp size_t logmsg_len)
458 fa4ffeb3 2018-11-04 stsp const struct got_error *err = NULL;
459 c75f7264 2018-09-11 stsp size_t offset, remain;
461 c75f7264 2018-09-11 stsp offset = 0;
462 c75f7264 2018-09-11 stsp remain = logmsg_len;
463 c75f7264 2018-09-11 stsp while (remain > 0) {
464 c75f7264 2018-09-11 stsp size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain);
466 c75f7264 2018-09-11 stsp if (imsg_compose(ibuf, GOT_IMSG_COMMIT_LOGMSG, 0, 0, -1,
467 fa4ffeb3 2018-11-04 stsp commit->logmsg + offset, n) == -1) {
468 fa4ffeb3 2018-11-04 stsp err = got_error_from_errno();
472 fa4ffeb3 2018-11-04 stsp err = flush_imsg(ibuf);
476 c75f7264 2018-09-11 stsp offset += n;
477 c75f7264 2018-09-11 stsp remain -= n;
480 fa4ffeb3 2018-11-04 stsp return err;
483 bff6ca00 2018-04-23 stsp const struct got_error *
484 068fd2bf 2018-04-24 stsp got_privsep_send_commit(struct imsgbuf *ibuf, struct got_commit_object *commit)
486 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
487 b9c33926 2018-11-07 stsp struct got_imsg_commit_object *icommit;
488 bff6ca00 2018-04-23 stsp uint8_t *buf;
489 bff6ca00 2018-04-23 stsp size_t len, total;
490 79f35eb3 2018-06-11 stsp struct got_object_qid *qid;
491 b9c33926 2018-11-07 stsp size_t author_len = strlen(commit->author);
492 b9c33926 2018-11-07 stsp size_t committer_len = strlen(commit->committer);
493 c75f7264 2018-09-11 stsp size_t logmsg_len = strlen(commit->logmsg);
495 b9c33926 2018-11-07 stsp total = sizeof(*icommit) + author_len + committer_len +
496 b9c33926 2018-11-07 stsp commit->nparents * SHA1_DIGEST_LENGTH;
498 bff6ca00 2018-04-23 stsp buf = malloc(total);
499 bff6ca00 2018-04-23 stsp if (buf == NULL)
500 bff6ca00 2018-04-23 stsp return got_error_from_errno();
502 b9c33926 2018-11-07 stsp icommit = (struct got_imsg_commit_object *)buf;
503 a7403916 2018-12-24 stsp memcpy(icommit->tree_id, commit->tree_id->sha1,
504 a7403916 2018-12-24 stsp sizeof(icommit->tree_id));
505 b9c33926 2018-11-07 stsp icommit->author_len = author_len;
506 b9c33926 2018-11-07 stsp icommit->author_time = commit->author_time;
507 b9c33926 2018-11-07 stsp icommit->author_gmtoff = commit->author_gmtoff;
508 b9c33926 2018-11-07 stsp icommit->committer_len = committer_len;
509 b9c33926 2018-11-07 stsp icommit->committer_time = commit->committer_time;
510 b9c33926 2018-11-07 stsp icommit->committer_gmtoff = commit->committer_gmtoff;
511 b9c33926 2018-11-07 stsp icommit->logmsg_len = logmsg_len;
512 b9c33926 2018-11-07 stsp icommit->nparents = commit->nparents;
514 b9c33926 2018-11-07 stsp len = sizeof(*icommit);
515 b9c33926 2018-11-07 stsp memcpy(buf + len, commit->author, author_len);
516 b9c33926 2018-11-07 stsp len += author_len;
517 b9c33926 2018-11-07 stsp memcpy(buf + len, commit->committer, committer_len);
518 b9c33926 2018-11-07 stsp len += committer_len;
519 79f35eb3 2018-06-11 stsp SIMPLEQ_FOREACH(qid, &commit->parent_ids, entry) {
520 79f35eb3 2018-06-11 stsp memcpy(buf + len, qid->id, SHA1_DIGEST_LENGTH);
521 86acc566 2018-04-23 stsp len += SHA1_DIGEST_LENGTH;
524 bff6ca00 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_COMMIT, 0, 0, -1, buf, len) == -1) {
525 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
529 904df868 2018-11-04 stsp if (logmsg_len == 0 ||
530 904df868 2018-11-04 stsp logmsg_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
531 904df868 2018-11-04 stsp err = flush_imsg(ibuf);
535 c75f7264 2018-09-11 stsp err = send_commit_logmsg(ibuf, commit, logmsg_len);
538 bff6ca00 2018-04-23 stsp return err;
541 bff6ca00 2018-04-23 stsp const struct got_error *
542 068fd2bf 2018-04-24 stsp got_privsep_recv_commit(struct got_commit_object **commit, struct imsgbuf *ibuf)
544 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
545 bff6ca00 2018-04-23 stsp struct imsg imsg;
546 291624d8 2018-11-07 stsp struct got_imsg_commit_object *icommit;
547 bff6ca00 2018-04-23 stsp size_t len, datalen;
549 bff6ca00 2018-04-23 stsp const size_t min_datalen =
550 bff6ca00 2018-04-23 stsp MIN(sizeof(struct got_imsg_error),
551 bff6ca00 2018-04-23 stsp sizeof(struct got_imsg_commit_object));
553 bff6ca00 2018-04-23 stsp *commit = NULL;
555 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
557 bff6ca00 2018-04-23 stsp return err;
559 bff6ca00 2018-04-23 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
562 bff6ca00 2018-04-23 stsp switch (imsg.hdr.type) {
563 bff6ca00 2018-04-23 stsp case GOT_IMSG_COMMIT:
564 291624d8 2018-11-07 stsp if (datalen < sizeof(*icommit)) {
565 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
568 291624d8 2018-11-07 stsp icommit = imsg.data;
569 291624d8 2018-11-07 stsp if (datalen != sizeof(*icommit) + icommit->author_len +
570 291624d8 2018-11-07 stsp icommit->committer_len +
571 291624d8 2018-11-07 stsp icommit->nparents * SHA1_DIGEST_LENGTH) {
572 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
575 291624d8 2018-11-07 stsp if (icommit->nparents < 0) {
576 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
579 291624d8 2018-11-07 stsp len += sizeof(*icommit);
581 bff6ca00 2018-04-23 stsp *commit = got_object_commit_alloc_partial();
582 bff6ca00 2018-04-23 stsp if (*commit == NULL) {
583 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
587 291624d8 2018-11-07 stsp memcpy((*commit)->tree_id->sha1, icommit->tree_id,
588 86acc566 2018-04-23 stsp SHA1_DIGEST_LENGTH);
589 291624d8 2018-11-07 stsp (*commit)->author_time = icommit->author_time;
590 291624d8 2018-11-07 stsp (*commit)->author_gmtoff = icommit->author_gmtoff;
591 291624d8 2018-11-07 stsp (*commit)->committer_time = icommit->committer_time;
592 291624d8 2018-11-07 stsp (*commit)->committer_gmtoff = icommit->committer_gmtoff;
594 291624d8 2018-11-07 stsp if (icommit->author_len == 0) {
595 bff6ca00 2018-04-23 stsp (*commit)->author = strdup("");
596 bff6ca00 2018-04-23 stsp if ((*commit)->author == NULL) {
597 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
601 291624d8 2018-11-07 stsp (*commit)->author = malloc(icommit->author_len + 1);
602 bff6ca00 2018-04-23 stsp if ((*commit)->author == NULL) {
603 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
606 291624d8 2018-11-07 stsp memcpy((*commit)->author, imsg.data + len,
607 291624d8 2018-11-07 stsp icommit->author_len);
608 291624d8 2018-11-07 stsp (*commit)->author[icommit->author_len] = '\0';
610 291624d8 2018-11-07 stsp len += icommit->author_len;
612 291624d8 2018-11-07 stsp if (icommit->committer_len == 0) {
613 bff6ca00 2018-04-23 stsp (*commit)->committer = strdup("");
614 bff6ca00 2018-04-23 stsp if ((*commit)->committer == NULL) {
615 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
619 bff6ca00 2018-04-23 stsp (*commit)->committer =
620 291624d8 2018-11-07 stsp malloc(icommit->committer_len + 1);
621 bff6ca00 2018-04-23 stsp if ((*commit)->committer == NULL) {
622 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
625 291624d8 2018-11-07 stsp memcpy((*commit)->committer, imsg.data + len,
626 291624d8 2018-11-07 stsp icommit->committer_len);
627 291624d8 2018-11-07 stsp (*commit)->committer[icommit->committer_len] = '\0';
629 291624d8 2018-11-07 stsp len += icommit->committer_len;
631 291624d8 2018-11-07 stsp if (icommit->logmsg_len == 0) {
632 bff6ca00 2018-04-23 stsp (*commit)->logmsg = strdup("");
633 bff6ca00 2018-04-23 stsp if ((*commit)->logmsg == NULL) {
634 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
638 291624d8 2018-11-07 stsp size_t offset = 0, remain = icommit->logmsg_len;
640 291624d8 2018-11-07 stsp (*commit)->logmsg = malloc(icommit->logmsg_len + 1);
641 bff6ca00 2018-04-23 stsp if ((*commit)->logmsg == NULL) {
642 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
645 c75f7264 2018-09-11 stsp while (remain > 0) {
646 c75f7264 2018-09-11 stsp struct imsg imsg_log;
647 c75f7264 2018-09-11 stsp size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,
650 c75f7264 2018-09-11 stsp err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
652 c75f7264 2018-09-11 stsp return err;
654 c75f7264 2018-09-11 stsp if (imsg_log.hdr.type != GOT_IMSG_COMMIT_LOGMSG)
655 c75f7264 2018-09-11 stsp return got_error(GOT_ERR_PRIVSEP_MSG);
657 c75f7264 2018-09-11 stsp memcpy((*commit)->logmsg + offset,
658 c75f7264 2018-09-11 stsp imsg_log.data, n);
659 c75f7264 2018-09-11 stsp imsg_free(&imsg_log);
660 c75f7264 2018-09-11 stsp offset += n;
661 c75f7264 2018-09-11 stsp remain -= n;
663 291624d8 2018-11-07 stsp (*commit)->logmsg[icommit->logmsg_len] = '\0';
666 291624d8 2018-11-07 stsp for (i = 0; i < icommit->nparents; i++) {
667 79f35eb3 2018-06-11 stsp struct got_object_qid *qid;
669 5df4932d 2018-11-05 stsp err = got_object_qid_alloc_partial(&qid);
672 291624d8 2018-11-07 stsp memcpy(qid->id, imsg.data + len +
673 291624d8 2018-11-07 stsp i * SHA1_DIGEST_LENGTH, sizeof(*qid->id));
674 7762fe12 2018-11-05 stsp SIMPLEQ_INSERT_TAIL(&(*commit)->parent_ids, qid, entry);
675 7762fe12 2018-11-05 stsp (*commit)->nparents++;
679 8c580685 2018-04-22 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
683 2178c42e 2018-04-22 stsp imsg_free(&imsg);
685 e033d803 2018-04-23 stsp return err;
688 e033d803 2018-04-23 stsp const struct got_error *
689 068fd2bf 2018-04-24 stsp got_privsep_send_tree(struct imsgbuf *ibuf, struct got_tree_object *tree)
691 e033d803 2018-04-23 stsp const struct got_error *err = NULL;
692 e033d803 2018-04-23 stsp struct got_imsg_tree_object itree;
693 e033d803 2018-04-23 stsp struct got_tree_entry *te;
694 b00c9821 2018-11-04 stsp size_t totlen;
695 6eb07a17 2018-11-04 stsp int nimsg; /* number of imsg queued in ibuf */
697 883f0469 2018-06-23 stsp itree.nentries = tree->entries.nentries;
698 e033d803 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE, 0, 0, -1, &itree, sizeof(itree))
700 e033d803 2018-04-23 stsp return got_error_from_errno();
702 b00c9821 2018-11-04 stsp totlen = sizeof(itree);
704 883f0469 2018-06-23 stsp SIMPLEQ_FOREACH(te, &tree->entries.head, entry) {
705 a58a49db 2018-11-07 stsp struct got_imsg_tree_entry *ite;
706 e033d803 2018-04-23 stsp uint8_t *buf = NULL;
707 a58a49db 2018-11-07 stsp size_t len = sizeof(*ite) + strlen(te->name);
709 e033d803 2018-04-23 stsp if (len > MAX_IMSGSIZE)
710 e033d803 2018-04-23 stsp return got_error(GOT_ERR_NO_SPACE);
713 6eb07a17 2018-11-04 stsp if (totlen + len >= MAX_IMSGSIZE - (IMSG_HEADER_SIZE * nimsg)) {
714 b00c9821 2018-11-04 stsp err = flush_imsg(ibuf);
716 b00c9821 2018-11-04 stsp return err;
720 e033d803 2018-04-23 stsp buf = malloc(len);
721 e033d803 2018-04-23 stsp if (buf == NULL)
722 e033d803 2018-04-23 stsp return got_error_from_errno();
724 a58a49db 2018-11-07 stsp ite = (struct got_imsg_tree_entry *)buf;
725 a58a49db 2018-11-07 stsp memcpy(ite->id, te->id->sha1, sizeof(ite->id));
726 a58a49db 2018-11-07 stsp ite->mode = te->mode;
727 a58a49db 2018-11-07 stsp memcpy(buf + sizeof(*ite), te->name, strlen(te->name));
729 e033d803 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE_ENTRY, 0, 0, -1,
730 e033d803 2018-04-23 stsp buf, len) == -1)
731 e033d803 2018-04-23 stsp err = got_error_from_errno();
734 e033d803 2018-04-23 stsp return err;
735 b00c9821 2018-11-04 stsp totlen += len;
738 b00c9821 2018-11-04 stsp return flush_imsg(ibuf);
741 e033d803 2018-04-23 stsp const struct got_error *
742 068fd2bf 2018-04-24 stsp got_privsep_recv_tree(struct got_tree_object **tree, struct imsgbuf *ibuf)
744 e033d803 2018-04-23 stsp const struct got_error *err = NULL;
745 e033d803 2018-04-23 stsp const size_t min_datalen =
746 e033d803 2018-04-23 stsp MIN(sizeof(struct got_imsg_error),
747 e033d803 2018-04-23 stsp sizeof(struct got_imsg_tree_object));
748 291624d8 2018-11-07 stsp struct got_imsg_tree_object *itree;
749 e033d803 2018-04-23 stsp int nentries = 0;
751 e033d803 2018-04-23 stsp *tree = NULL;
753 e033d803 2018-04-23 stsp err = read_imsg(ibuf);
757 e033d803 2018-04-23 stsp while (1) {
758 e033d803 2018-04-23 stsp struct imsg imsg;
760 e033d803 2018-04-23 stsp size_t datalen;
761 c0588d8d 2018-11-07 stsp struct got_imsg_tree_entry *ite;
762 e033d803 2018-04-23 stsp struct got_tree_entry *te = NULL;
764 e033d803 2018-04-23 stsp n = imsg_get(ibuf, &imsg);
765 e033d803 2018-04-23 stsp if (n == 0) {
766 883f0469 2018-06-23 stsp if (*tree && (*tree)->entries.nentries != nentries)
767 e033d803 2018-04-23 stsp goto get_more;
771 e033d803 2018-04-23 stsp if (imsg.hdr.len < IMSG_HEADER_SIZE + min_datalen)
772 e033d803 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
774 e033d803 2018-04-23 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
776 e033d803 2018-04-23 stsp switch (imsg.hdr.type) {
777 e033d803 2018-04-23 stsp case GOT_IMSG_ERROR:
778 e033d803 2018-04-23 stsp err = recv_imsg_error(&imsg, datalen);
780 e033d803 2018-04-23 stsp case GOT_IMSG_TREE:
781 e033d803 2018-04-23 stsp /* This message should only appear once. */
782 e033d803 2018-04-23 stsp if (*tree != NULL) {
783 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
786 291624d8 2018-11-07 stsp if (datalen != sizeof(*itree)) {
787 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
790 291624d8 2018-11-07 stsp itree = imsg.data;
791 c3b78ecc 2018-11-07 stsp *tree = malloc(sizeof(**tree));
792 e033d803 2018-04-23 stsp if (*tree == NULL) {
793 e033d803 2018-04-23 stsp err = got_error_from_errno();
796 291624d8 2018-11-07 stsp (*tree)->entries.nentries = itree->nentries;
797 883f0469 2018-06-23 stsp SIMPLEQ_INIT(&(*tree)->entries.head);
798 c3b78ecc 2018-11-07 stsp (*tree)->refcnt = 0;
800 e033d803 2018-04-23 stsp case GOT_IMSG_TREE_ENTRY:
801 e033d803 2018-04-23 stsp /* This message should be preceeded by GOT_IMSG_TREE. */
802 e033d803 2018-04-23 stsp if (*tree == NULL) {
803 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
806 c0588d8d 2018-11-07 stsp if (datalen < sizeof(*ite) || datalen > MAX_IMSGSIZE) {
807 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
811 e033d803 2018-04-23 stsp /* Remaining data contains the entry's name. */
812 c0588d8d 2018-11-07 stsp datalen -= sizeof(*ite);
813 e033d803 2018-04-23 stsp if (datalen == 0 || datalen > MAX_IMSGSIZE) {
814 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
817 c0588d8d 2018-11-07 stsp ite = imsg.data;
819 e033d803 2018-04-23 stsp te = got_alloc_tree_entry_partial();
820 e033d803 2018-04-23 stsp if (te == NULL) {
821 e033d803 2018-04-23 stsp err = got_error_from_errno();
824 e033d803 2018-04-23 stsp te->name = malloc(datalen + 1);
825 e033d803 2018-04-23 stsp if (te->name == NULL) {
827 e033d803 2018-04-23 stsp err = got_error_from_errno();
830 c0588d8d 2018-11-07 stsp memcpy(te->name, imsg.data + sizeof(*ite), datalen);
831 e033d803 2018-04-23 stsp te->name[datalen] = '\0';
833 c0588d8d 2018-11-07 stsp memcpy(te->id->sha1, ite->id, SHA1_DIGEST_LENGTH);
834 c0588d8d 2018-11-07 stsp te->mode = ite->mode;
835 883f0469 2018-06-23 stsp SIMPLEQ_INSERT_TAIL(&(*tree)->entries.head, te, entry);
836 e033d803 2018-04-23 stsp nentries++;
839 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
843 e033d803 2018-04-23 stsp imsg_free(&imsg);
846 883f0469 2018-06-23 stsp if (*tree && (*tree)->entries.nentries != nentries) {
847 1e51f5b9 2018-04-23 stsp if (err == NULL)
848 1e51f5b9 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
849 e033d803 2018-04-23 stsp got_object_tree_close(*tree);
850 e033d803 2018-04-23 stsp *tree = NULL;
853 ff6b18f8 2018-04-24 stsp return err;
856 ff6b18f8 2018-04-24 stsp const struct got_error *
857 ac544f8c 2019-01-13 stsp got_privsep_send_blob(struct imsgbuf *ibuf, size_t size, size_t hdrlen,
858 ac544f8c 2019-01-13 stsp const uint8_t *data)
860 2967a784 2018-04-24 stsp struct got_imsg_blob iblob;
862 2967a784 2018-04-24 stsp iblob.size = size;
863 ebc55e2d 2018-12-24 stsp iblob.hdrlen = hdrlen;
865 ac544f8c 2019-01-13 stsp if (data) {
866 ac544f8c 2019-01-13 stsp uint8_t *buf;
868 ac544f8c 2019-01-13 stsp if (size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX)
869 ac544f8c 2019-01-13 stsp return got_error(GOT_ERR_NO_SPACE);
871 ac544f8c 2019-01-13 stsp buf = malloc(sizeof(iblob) + size);
872 ac544f8c 2019-01-13 stsp if (buf == NULL)
873 ac544f8c 2019-01-13 stsp return got_error_from_errno();
875 ac544f8c 2019-01-13 stsp memcpy(buf, &iblob, sizeof(iblob));
876 ac544f8c 2019-01-13 stsp memcpy(buf + sizeof(iblob), data, size);
877 ac544f8c 2019-01-13 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, buf,
878 ac544f8c 2019-01-13 stsp sizeof(iblob) + size) == -1) {
880 ac544f8c 2019-01-13 stsp return got_error_from_errno();
884 ac544f8c 2019-01-13 stsp /* Data has already been written to file descriptor. */
885 ac544f8c 2019-01-13 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, &iblob,
886 ac544f8c 2019-01-13 stsp sizeof(iblob)) == -1)
887 ac544f8c 2019-01-13 stsp return got_error_from_errno();
891 ff6b18f8 2018-04-24 stsp return flush_imsg(ibuf);
894 ff6b18f8 2018-04-24 stsp const struct got_error *
895 ac544f8c 2019-01-13 stsp got_privsep_recv_blob(uint8_t **outbuf, size_t *size, size_t *hdrlen,
896 ac544f8c 2019-01-13 stsp struct imsgbuf *ibuf)
898 ff6b18f8 2018-04-24 stsp const struct got_error *err = NULL;
899 ff6b18f8 2018-04-24 stsp struct imsg imsg;
900 291624d8 2018-11-07 stsp struct got_imsg_blob *iblob;
901 ff6b18f8 2018-04-24 stsp size_t datalen;
903 ac544f8c 2019-01-13 stsp *outbuf = NULL;
905 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, ibuf, 0);
907 ff6b18f8 2018-04-24 stsp return err;
909 ff6b18f8 2018-04-24 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
911 ff6b18f8 2018-04-24 stsp switch (imsg.hdr.type) {
912 ff6b18f8 2018-04-24 stsp case GOT_IMSG_BLOB:
913 ac544f8c 2019-01-13 stsp if (datalen < sizeof(*iblob)) {
914 ff6b18f8 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
917 291624d8 2018-11-07 stsp iblob = imsg.data;
918 291624d8 2018-11-07 stsp *size = iblob->size;
919 ebc55e2d 2018-12-24 stsp *hdrlen = iblob->hdrlen;
921 ac544f8c 2019-01-13 stsp if (datalen == sizeof(*iblob)) {
922 ac544f8c 2019-01-13 stsp /* Data has been written to file descriptor. */
926 ac544f8c 2019-01-13 stsp if (*size > GOT_PRIVSEP_INLINE_BLOB_DATA_MAX) {
927 ac544f8c 2019-01-13 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
931 ac544f8c 2019-01-13 stsp *outbuf = malloc(*size);
932 ac544f8c 2019-01-13 stsp if (*outbuf == NULL) {
933 ac544f8c 2019-01-13 stsp err = got_error_from_errno();
936 ac544f8c 2019-01-13 stsp memcpy(*outbuf, imsg.data + sizeof(*iblob), *size);
939 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
943 f4a881ce 2018-11-17 stsp imsg_free(&imsg);
945 f4a881ce 2018-11-17 stsp return err;
948 f4a881ce 2018-11-17 stsp static const struct got_error *
949 f4a881ce 2018-11-17 stsp send_tagmsg(struct imsgbuf *ibuf, struct got_tag_object *tag, size_t tagmsg_len)
951 f4a881ce 2018-11-17 stsp const struct got_error *err = NULL;
952 f4a881ce 2018-11-17 stsp size_t offset, remain;
954 f4a881ce 2018-11-17 stsp offset = 0;
955 f4a881ce 2018-11-17 stsp remain = tagmsg_len;
956 f4a881ce 2018-11-17 stsp while (remain > 0) {
957 f4a881ce 2018-11-17 stsp size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain);
959 f4a881ce 2018-11-17 stsp if (imsg_compose(ibuf, GOT_IMSG_TAG_TAGMSG, 0, 0, -1,
960 f4a881ce 2018-11-17 stsp tag->tagmsg + offset, n) == -1) {
961 f4a881ce 2018-11-17 stsp err = got_error_from_errno();
965 f4a881ce 2018-11-17 stsp err = flush_imsg(ibuf);
969 f4a881ce 2018-11-17 stsp offset += n;
970 f4a881ce 2018-11-17 stsp remain -= n;
973 f4a881ce 2018-11-17 stsp return err;
976 f4a881ce 2018-11-17 stsp const struct got_error *
977 f4a881ce 2018-11-17 stsp got_privsep_send_tag(struct imsgbuf *ibuf, struct got_tag_object *tag)
979 f4a881ce 2018-11-17 stsp const struct got_error *err = NULL;
980 f4a881ce 2018-11-17 stsp struct got_imsg_tag_object *itag;
981 f4a881ce 2018-11-17 stsp uint8_t *buf;
982 f4a881ce 2018-11-17 stsp size_t len, total;
983 f4a881ce 2018-11-17 stsp size_t tag_len = strlen(tag->tag);
984 f4a881ce 2018-11-17 stsp size_t tagger_len = strlen(tag->tagger);
985 f4a881ce 2018-11-17 stsp size_t tagmsg_len = strlen(tag->tagmsg);
987 f4a881ce 2018-11-17 stsp total = sizeof(*itag) + tag_len + tagger_len + tagmsg_len;
989 f4a881ce 2018-11-17 stsp buf = malloc(total);
990 f4a881ce 2018-11-17 stsp if (buf == NULL)
991 f4a881ce 2018-11-17 stsp return got_error_from_errno();
993 f4a881ce 2018-11-17 stsp itag = (struct got_imsg_tag_object *)buf;
994 f4a881ce 2018-11-17 stsp memcpy(itag->id, tag->id.sha1, sizeof(itag->id));
995 f4a881ce 2018-11-17 stsp itag->obj_type = tag->obj_type;
996 f4a881ce 2018-11-17 stsp itag->tag_len = tag_len;
997 f4a881ce 2018-11-17 stsp itag->tagger_len = tagger_len;
998 f4a881ce 2018-11-17 stsp itag->tagger_time = tag->tagger_time;
999 f4a881ce 2018-11-17 stsp itag->tagger_gmtoff = tag->tagger_gmtoff;
1000 f4a881ce 2018-11-17 stsp itag->tagmsg_len = tagmsg_len;
1002 f4a881ce 2018-11-17 stsp len = sizeof(*itag);
1003 f4a881ce 2018-11-17 stsp memcpy(buf + len, tag->tag, tag_len);
1004 f4a881ce 2018-11-17 stsp len += tag_len;
1005 f4a881ce 2018-11-17 stsp memcpy(buf + len, tag->tagger, tagger_len);
1006 f4a881ce 2018-11-17 stsp len += tagger_len;
1008 f4a881ce 2018-11-17 stsp if (imsg_compose(ibuf, GOT_IMSG_TAG, 0, 0, -1, buf, len) == -1) {
1009 f4a881ce 2018-11-17 stsp err = got_error_from_errno();
1010 f4a881ce 2018-11-17 stsp goto done;
1013 f4a881ce 2018-11-17 stsp if (tagmsg_len == 0 ||
1014 f4a881ce 2018-11-17 stsp tagmsg_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
1015 f4a881ce 2018-11-17 stsp err = flush_imsg(ibuf);
1017 f4a881ce 2018-11-17 stsp goto done;
1019 f4a881ce 2018-11-17 stsp err = send_tagmsg(ibuf, tag, tagmsg_len);
1021 f4a881ce 2018-11-17 stsp free(buf);
1022 f4a881ce 2018-11-17 stsp return err;
1025 f4a881ce 2018-11-17 stsp const struct got_error *
1026 f4a881ce 2018-11-17 stsp got_privsep_recv_tag(struct got_tag_object **tag, struct imsgbuf *ibuf)
1028 f4a881ce 2018-11-17 stsp const struct got_error *err = NULL;
1029 f4a881ce 2018-11-17 stsp struct imsg imsg;
1030 f4a881ce 2018-11-17 stsp struct got_imsg_tag_object *itag;
1031 f4a881ce 2018-11-17 stsp size_t len, datalen;
1032 f4a881ce 2018-11-17 stsp const size_t min_datalen =
1033 f4a881ce 2018-11-17 stsp MIN(sizeof(struct got_imsg_error),
1034 f4a881ce 2018-11-17 stsp sizeof(struct got_imsg_tag_object));
1036 f4a881ce 2018-11-17 stsp *tag = NULL;
1038 f4a881ce 2018-11-17 stsp err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
1040 f4a881ce 2018-11-17 stsp return err;
1042 f4a881ce 2018-11-17 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1045 f4a881ce 2018-11-17 stsp switch (imsg.hdr.type) {
1046 f4a881ce 2018-11-17 stsp case GOT_IMSG_TAG:
1047 f4a881ce 2018-11-17 stsp if (datalen < sizeof(*itag)) {
1048 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
1051 f4a881ce 2018-11-17 stsp itag = imsg.data;
1052 f4a881ce 2018-11-17 stsp if (datalen != sizeof(*itag) + itag->tag_len +
1053 f4a881ce 2018-11-17 stsp itag->tagger_len) {
1054 f4a881ce 2018-11-17 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
1057 f4a881ce 2018-11-17 stsp len += sizeof(*itag);
1059 f4a881ce 2018-11-17 stsp *tag = calloc(1, sizeof(**tag));
1060 f4a881ce 2018-11-17 stsp if (*tag == NULL) {
1061 f4a881ce 2018-11-17 stsp err = got_error_from_errno();
1065 f4a881ce 2018-11-17 stsp memcpy((*tag)->id.sha1, itag->id, SHA1_DIGEST_LENGTH);
1067 f4a881ce 2018-11-17 stsp if (itag->tag_len == 0) {
1068 f4a881ce 2018-11-17 stsp (*tag)->tag = strdup("");
1069 f4a881ce 2018-11-17 stsp if ((*tag)->tag == NULL) {
1070 f4a881ce 2018-11-17 stsp err = got_error_from_errno();
1074 f4a881ce 2018-11-17 stsp (*tag)->tag = malloc(itag->tag_len + 1);
1075 f4a881ce 2018-11-17 stsp if ((*tag)->tag == NULL) {
1076 f4a881ce 2018-11-17 stsp err = got_error_from_errno();
1079 f4a881ce 2018-11-17 stsp memcpy((*tag)->tag, imsg.data + len,
1080 f4a881ce 2018-11-17 stsp itag->tag_len);
1081 f4a881ce 2018-11-17 stsp (*tag)->tag[itag->tag_len] = '\0';
1083 f4a881ce 2018-11-17 stsp len += itag->tag_len;
1085 f4a881ce 2018-11-17 stsp (*tag)->obj_type = itag->obj_type;
1086 f4a881ce 2018-11-17 stsp (*tag)->tagger_time = itag->tagger_time;
1087 f4a881ce 2018-11-17 stsp (*tag)->tagger_gmtoff = itag->tagger_gmtoff;
1089 f4a881ce 2018-11-17 stsp if (itag->tagger_len == 0) {
1090 f4a881ce 2018-11-17 stsp (*tag)->tagger = strdup("");
1091 f4a881ce 2018-11-17 stsp if ((*tag)->tagger == NULL) {
1092 f4a881ce 2018-11-17 stsp err = got_error_from_errno();
1096 f4a881ce 2018-11-17 stsp (*tag)->tagger = malloc(itag->tagger_len + 1);
1097 f4a881ce 2018-11-17 stsp if ((*tag)->tagger == NULL) {
1098 f4a881ce 2018-11-17 stsp err = got_error_from_errno();
1101 f4a881ce 2018-11-17 stsp memcpy((*tag)->tagger, imsg.data + len,
1102 f4a881ce 2018-11-17 stsp itag->tagger_len);
1103 f4a881ce 2018-11-17 stsp (*tag)->tagger[itag->tagger_len] = '\0';
1105 f4a881ce 2018-11-17 stsp len += itag->tagger_len;
1107 f4a881ce 2018-11-17 stsp if (itag->tagmsg_len == 0) {
1108 f4a881ce 2018-11-17 stsp (*tag)->tagmsg = strdup("");
1109 f4a881ce 2018-11-17 stsp if ((*tag)->tagmsg == NULL) {
1110 f4a881ce 2018-11-17 stsp err = got_error_from_errno();
1114 f4a881ce 2018-11-17 stsp size_t offset = 0, remain = itag->tagmsg_len;
1116 f4a881ce 2018-11-17 stsp (*tag)->tagmsg = malloc(itag->tagmsg_len + 1);
1117 f4a881ce 2018-11-17 stsp if ((*tag)->tagmsg == NULL) {
1118 f4a881ce 2018-11-17 stsp err = got_error_from_errno();
1121 f4a881ce 2018-11-17 stsp while (remain > 0) {
1122 f4a881ce 2018-11-17 stsp struct imsg imsg_log;
1123 f4a881ce 2018-11-17 stsp size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,
1126 f4a881ce 2018-11-17 stsp err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
1128 f4a881ce 2018-11-17 stsp return err;
1130 f4a881ce 2018-11-17 stsp if (imsg_log.hdr.type != GOT_IMSG_TAG_TAGMSG)
1131 f4a881ce 2018-11-17 stsp return got_error(GOT_ERR_PRIVSEP_MSG);
1133 f4a881ce 2018-11-17 stsp memcpy((*tag)->tagmsg + offset, imsg_log.data,
1135 f4a881ce 2018-11-17 stsp imsg_free(&imsg_log);
1136 f4a881ce 2018-11-17 stsp offset += n;
1137 f4a881ce 2018-11-17 stsp remain -= n;
1139 f4a881ce 2018-11-17 stsp (*tag)->tagmsg[itag->tagmsg_len] = '\0';
1144 ff6b18f8 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
1148 ff6b18f8 2018-04-24 stsp imsg_free(&imsg);
1150 2178c42e 2018-04-22 stsp return err;
1153 876c234b 2018-09-10 stsp const struct got_error *
1154 876c234b 2018-09-10 stsp got_privsep_init_pack_child(struct imsgbuf *ibuf, struct got_pack *pack,
1155 876c234b 2018-09-10 stsp struct got_packidx *packidx)
1157 41496140 2019-02-21 stsp const struct got_error *err = NULL;
1158 876c234b 2018-09-10 stsp struct got_imsg_packidx ipackidx;
1159 876c234b 2018-09-10 stsp struct got_imsg_pack ipack;
1162 876c234b 2018-09-10 stsp ipackidx.len = packidx->len;
1163 876c234b 2018-09-10 stsp fd = dup(packidx->fd);
1164 876c234b 2018-09-10 stsp if (fd == -1)
1165 876c234b 2018-09-10 stsp return got_error_from_errno();
1167 876c234b 2018-09-10 stsp if (imsg_compose(ibuf, GOT_IMSG_PACKIDX, 0, 0, fd, &ipackidx,
1168 41496140 2019-02-21 stsp sizeof(ipackidx)) == -1) {
1169 41496140 2019-02-21 stsp err = got_error_from_errno();
1170 41496140 2019-02-21 stsp close(fd);
1171 41496140 2019-02-21 stsp return err;
1174 876c234b 2018-09-10 stsp if (strlcpy(ipack.path_packfile, pack->path_packfile,
1175 876c234b 2018-09-10 stsp sizeof(ipack.path_packfile)) >= sizeof(ipack.path_packfile))
1176 876c234b 2018-09-10 stsp return got_error(GOT_ERR_NO_SPACE);
1177 876c234b 2018-09-10 stsp ipack.filesize = pack->filesize;
1179 876c234b 2018-09-10 stsp fd = dup(pack->fd);
1180 876c234b 2018-09-10 stsp if (fd == -1)
1181 876c234b 2018-09-10 stsp return got_error_from_errno();
1183 876c234b 2018-09-10 stsp if (imsg_compose(ibuf, GOT_IMSG_PACK, 0, 0, fd, &ipack, sizeof(ipack))
1185 41496140 2019-02-21 stsp err = got_error_from_errno();
1186 41496140 2019-02-21 stsp close(fd);
1187 41496140 2019-02-21 stsp return err;
1190 876c234b 2018-09-10 stsp return flush_imsg(ibuf);
1193 876c234b 2018-09-10 stsp const struct got_error *
1194 106807b4 2018-09-15 stsp got_privsep_send_packed_obj_req(struct imsgbuf *ibuf, int idx,
1195 106807b4 2018-09-15 stsp struct got_object_id *id)
1197 876c234b 2018-09-10 stsp struct got_imsg_packed_object iobj;
1199 876c234b 2018-09-10 stsp iobj.idx = idx;
1200 106807b4 2018-09-15 stsp memcpy(iobj.id, id->sha1, sizeof(iobj.id));
1202 876c234b 2018-09-10 stsp if (imsg_compose(ibuf, GOT_IMSG_PACKED_OBJECT_REQUEST, 0, 0, -1,
1203 876c234b 2018-09-10 stsp &iobj, sizeof(iobj)) == -1)
1204 876c234b 2018-09-10 stsp return got_error_from_errno();
1206 876c234b 2018-09-10 stsp return flush_imsg(ibuf);
1209 63219cd2 2019-01-04 stsp const struct got_error *
1210 63219cd2 2019-01-04 stsp got_privsep_unveil_exec_helpers(void)
1212 63219cd2 2019-01-04 stsp if (unveil(GOT_PATH_PROG_READ_PACK, "x") != 0 ||
1213 63219cd2 2019-01-04 stsp unveil(GOT_PATH_PROG_READ_OBJECT, "x") != 0 ||
1214 63219cd2 2019-01-04 stsp unveil(GOT_PATH_PROG_READ_COMMIT, "x") != 0 ||
1215 63219cd2 2019-01-04 stsp unveil(GOT_PATH_PROG_READ_TREE, "x") != 0 ||
1216 63219cd2 2019-01-04 stsp unveil(GOT_PATH_PROG_READ_BLOB, "x") != 0 ||
1217 63219cd2 2019-01-04 stsp unveil(GOT_PATH_PROG_READ_TAG, "x") != 0)
1218 63219cd2 2019-01-04 stsp return got_error_from_errno();
1220 63219cd2 2019-01-04 stsp return NULL;
