2 2178c42e 2018-04-22 stsp * Copyright (c) 2018 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 876c234b 2018-09-10 stsp const struct got_error *
110 ad242220 2018-09-08 stsp got_privsep_recv_imsg(struct imsg *imsg, struct imsgbuf *ibuf, size_t min_datalen)
112 e033d803 2018-04-23 stsp const struct got_error *err;
115 e033d803 2018-04-23 stsp n = imsg_get(ibuf, imsg);
116 876c234b 2018-09-10 stsp if (n == -1)
117 876c234b 2018-09-10 stsp return got_error_from_errno();
119 876c234b 2018-09-10 stsp while (n == 0) {
120 876c234b 2018-09-10 stsp err = read_imsg(ibuf);
122 876c234b 2018-09-10 stsp return err;
123 876c234b 2018-09-10 stsp n = imsg_get(ibuf, imsg);
126 fe36cf76 2018-04-23 stsp if (imsg->hdr.len < IMSG_HEADER_SIZE + min_datalen)
127 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
129 fe36cf76 2018-04-23 stsp return NULL;
132 fe36cf76 2018-04-23 stsp static const struct got_error *
133 c4eae628 2018-04-23 stsp recv_imsg_error(struct imsg *imsg, size_t datalen)
135 291624d8 2018-11-07 stsp struct got_imsg_error *ierr;
137 291624d8 2018-11-07 stsp if (datalen != sizeof(*ierr))
138 c4eae628 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
140 291624d8 2018-11-07 stsp ierr = imsg->data;
141 291624d8 2018-11-07 stsp if (ierr->code == GOT_ERR_ERRNO) {
142 c4eae628 2018-04-23 stsp static struct got_error serr;
143 c4eae628 2018-04-23 stsp serr.code = GOT_ERR_ERRNO;
144 291624d8 2018-11-07 stsp serr.msg = strerror(ierr->errno_code);
145 c4eae628 2018-04-23 stsp return &serr;
148 291624d8 2018-11-07 stsp return got_error(ierr->code);
151 2178c42e 2018-04-22 stsp /* Attempt to send an error in an imsg. Complain on stderr as a last resort. */
153 2178c42e 2018-04-22 stsp got_privsep_send_error(struct imsgbuf *ibuf, const struct got_error *err)
155 2178c42e 2018-04-22 stsp const struct got_error *poll_err;
156 2178c42e 2018-04-22 stsp struct got_imsg_error ierr;
159 2178c42e 2018-04-22 stsp ierr.code = err->code;
160 2178c42e 2018-04-22 stsp if (err->code == GOT_ERR_ERRNO)
161 2178c42e 2018-04-22 stsp ierr.errno_code = errno;
163 2178c42e 2018-04-22 stsp ierr.errno_code = 0;
164 2178c42e 2018-04-22 stsp ret = imsg_compose(ibuf, GOT_IMSG_ERROR, 0, 0, -1, &ierr, sizeof(ierr));
165 2178c42e 2018-04-22 stsp if (ret != -1) {
166 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": imsg_compose: %s\n",
167 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, strerror(errno));
171 2178c42e 2018-04-22 stsp poll_err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
172 5d43e84d 2018-04-23 stsp if (poll_err) {
173 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": poll: %s\n",
174 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, poll_err->msg);
178 2178c42e 2018-04-22 stsp ret = imsg_flush(ibuf);
179 5d43e84d 2018-04-23 stsp if (ret == -1) {
180 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": imsg_flush: %s\n",
181 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, strerror(errno));
186 e033d803 2018-04-23 stsp static const struct got_error *
187 e033d803 2018-04-23 stsp flush_imsg(struct imsgbuf *ibuf)
189 e033d803 2018-04-23 stsp const struct got_error *err;
191 e033d803 2018-04-23 stsp err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
193 e033d803 2018-04-23 stsp return err;
195 e033d803 2018-04-23 stsp if (imsg_flush(ibuf) == -1)
196 e033d803 2018-04-23 stsp return got_error_from_errno();
198 e033d803 2018-04-23 stsp return NULL;
201 ad242220 2018-09-08 stsp const struct got_error *
202 ad242220 2018-09-08 stsp got_privsep_send_stop(int fd)
204 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
205 ad242220 2018-09-08 stsp struct imsgbuf ibuf;
207 ad242220 2018-09-08 stsp imsg_init(&ibuf, fd);
209 ad242220 2018-09-08 stsp if (imsg_compose(&ibuf, GOT_IMSG_STOP, 0, 0, -1, NULL, 0) == -1)
210 ad242220 2018-09-08 stsp return got_error_from_errno();
212 ad242220 2018-09-08 stsp err = flush_imsg(&ibuf);
213 ad242220 2018-09-08 stsp imsg_clear(&ibuf);
214 ad242220 2018-09-08 stsp return err;
217 ad242220 2018-09-08 stsp const struct got_error *
218 ad242220 2018-09-08 stsp got_privsep_send_obj_req(struct imsgbuf *ibuf, int fd, struct got_object *obj)
220 ad242220 2018-09-08 stsp struct got_imsg_object iobj, *iobjp = NULL;
221 ad242220 2018-09-08 stsp size_t iobj_size = 0;
222 ad242220 2018-09-08 stsp int imsg_code = GOT_IMSG_OBJECT_REQUEST;
225 ad242220 2018-09-08 stsp switch (obj->type) {
226 ad242220 2018-09-08 stsp case GOT_OBJ_TYPE_TREE:
227 ad242220 2018-09-08 stsp imsg_code = GOT_IMSG_TREE_REQUEST;
229 ad242220 2018-09-08 stsp case GOT_OBJ_TYPE_COMMIT:
230 ad242220 2018-09-08 stsp imsg_code = GOT_IMSG_COMMIT_REQUEST;
232 55da3778 2018-09-10 stsp case GOT_OBJ_TYPE_BLOB:
233 55da3778 2018-09-10 stsp imsg_code = GOT_IMSG_BLOB_REQUEST;
236 ad242220 2018-09-08 stsp return got_error(GOT_ERR_OBJ_TYPE);
239 41fa1437 2018-11-05 stsp memcpy(iobj.id, obj->id.sha1, sizeof(iobj.id));
240 41fa1437 2018-11-05 stsp iobj.type = obj->type;
241 41fa1437 2018-11-05 stsp iobj.flags = obj->flags;
242 41fa1437 2018-11-05 stsp iobj.hdrlen = obj->hdrlen;
243 41fa1437 2018-11-05 stsp iobj.size = obj->size;
244 41fa1437 2018-11-05 stsp if (iobj.flags & GOT_OBJ_FLAG_PACKED) {
245 41fa1437 2018-11-05 stsp iobj.pack_offset = obj->pack_offset;
246 41fa1437 2018-11-05 stsp iobj.pack_idx = obj->pack_idx;
249 ad242220 2018-09-08 stsp iobjp = &iobj;
250 ad242220 2018-09-08 stsp iobj_size = sizeof(iobj);
253 ad242220 2018-09-08 stsp if (imsg_compose(ibuf, imsg_code, 0, 0, fd, iobjp, iobj_size) == -1)
254 7762fe12 2018-11-05 stsp return got_error_from_errno();
256 7762fe12 2018-11-05 stsp return flush_imsg(ibuf);
259 7762fe12 2018-11-05 stsp const struct got_error *
260 55da3778 2018-09-10 stsp got_privsep_send_blob_req(struct imsgbuf *ibuf, int infd)
262 ad242220 2018-09-08 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB_REQUEST, 0, 0, infd, NULL, 0)
264 ad242220 2018-09-08 stsp return got_error_from_errno();
266 55da3778 2018-09-10 stsp return flush_imsg(ibuf);
269 55da3778 2018-09-10 stsp const struct got_error *
270 55da3778 2018-09-10 stsp got_privsep_send_blob_outfd(struct imsgbuf *ibuf, int outfd)
272 ad242220 2018-09-08 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB_OUTFD, 0, 0, outfd, NULL, 0)
274 3840f4c9 2018-09-12 stsp return got_error_from_errno();
276 3840f4c9 2018-09-12 stsp return flush_imsg(ibuf);
279 3840f4c9 2018-09-12 stsp const struct got_error *
280 3840f4c9 2018-09-12 stsp got_privsep_send_tmpfd(struct imsgbuf *ibuf, int fd)
282 3840f4c9 2018-09-12 stsp if (imsg_compose(ibuf, GOT_IMSG_TMPFD, 0, 0, fd, NULL, 0)
284 ad242220 2018-09-08 stsp return got_error_from_errno();
286 ad242220 2018-09-08 stsp return flush_imsg(ibuf);
289 ad242220 2018-09-08 stsp const struct got_error *
290 876c234b 2018-09-10 stsp got_privsep_send_obj(struct imsgbuf *ibuf, struct got_object *obj)
292 2178c42e 2018-04-22 stsp struct got_imsg_object iobj;
294 c59b3346 2018-09-11 stsp memcpy(iobj.id, obj->id.sha1, sizeof(iobj.id));
295 2178c42e 2018-04-22 stsp iobj.type = obj->type;
296 2178c42e 2018-04-22 stsp iobj.flags = obj->flags;
297 2178c42e 2018-04-22 stsp iobj.hdrlen = obj->hdrlen;
298 2178c42e 2018-04-22 stsp iobj.size = obj->size;
299 c59b3346 2018-09-11 stsp if (iobj.flags & GOT_OBJ_FLAG_PACKED) {
300 876c234b 2018-09-10 stsp iobj.pack_offset = obj->pack_offset;
301 c59b3346 2018-09-11 stsp iobj.pack_idx = obj->pack_idx;
304 2178c42e 2018-04-22 stsp if (imsg_compose(ibuf, GOT_IMSG_OBJECT, 0, 0, -1, &iobj, sizeof(iobj))
306 2178c42e 2018-04-22 stsp return got_error_from_errno();
308 c59b3346 2018-09-11 stsp return flush_imsg(ibuf);
311 cfd633c2 2018-09-10 stsp const struct got_error *
312 cfd633c2 2018-09-10 stsp got_privsep_get_imsg_obj(struct got_object **obj, struct imsg *imsg,
313 cfd633c2 2018-09-10 stsp struct imsgbuf *ibuf)
315 cfd633c2 2018-09-10 stsp const struct got_error *err = NULL;
316 291624d8 2018-11-07 stsp struct got_imsg_object *iobj;
317 cfd633c2 2018-09-10 stsp size_t datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
319 291624d8 2018-11-07 stsp if (datalen != sizeof(*iobj))
320 cfd633c2 2018-09-10 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
321 291624d8 2018-11-07 stsp iobj = imsg->data;
323 cfd633c2 2018-09-10 stsp *obj = calloc(1, sizeof(**obj));
324 cfd633c2 2018-09-10 stsp if (*obj == NULL)
325 cfd633c2 2018-09-10 stsp return got_error_from_errno();
327 291624d8 2018-11-07 stsp memcpy((*obj)->id.sha1, iobj->id, SHA1_DIGEST_LENGTH);
328 291624d8 2018-11-07 stsp (*obj)->type = iobj->type;
329 291624d8 2018-11-07 stsp (*obj)->flags = iobj->flags;
330 291624d8 2018-11-07 stsp (*obj)->hdrlen = iobj->hdrlen;
331 291624d8 2018-11-07 stsp (*obj)->size = iobj->size;
332 c59b3346 2018-09-11 stsp /* path_packfile is handled by caller */
333 291624d8 2018-11-07 stsp if (iobj->flags & GOT_OBJ_FLAG_PACKED) {
334 291624d8 2018-11-07 stsp (*obj)->pack_offset = iobj->pack_offset;
335 291624d8 2018-11-07 stsp (*obj)->pack_idx = iobj->pack_idx;
338 876c234b 2018-09-10 stsp return err;
341 2178c42e 2018-04-22 stsp const struct got_error *
342 2178c42e 2018-04-22 stsp got_privsep_recv_obj(struct got_object **obj, struct imsgbuf *ibuf)
344 2178c42e 2018-04-22 stsp const struct got_error *err = NULL;
345 2178c42e 2018-04-22 stsp struct imsg imsg;
346 2178c42e 2018-04-22 stsp size_t datalen;
347 c4eae628 2018-04-23 stsp const size_t min_datalen =
348 c4eae628 2018-04-23 stsp MIN(sizeof(struct got_imsg_error), sizeof(struct got_imsg_object));
350 2178c42e 2018-04-22 stsp *obj = NULL;
352 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
354 2178c42e 2018-04-22 stsp return err;
356 2178c42e 2018-04-22 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
358 2178c42e 2018-04-22 stsp switch (imsg.hdr.type) {
359 2178c42e 2018-04-22 stsp case GOT_IMSG_ERROR:
360 c4eae628 2018-04-23 stsp err = recv_imsg_error(&imsg, datalen);
362 2178c42e 2018-04-22 stsp case GOT_IMSG_OBJECT:
363 cfd633c2 2018-09-10 stsp err = got_privsep_get_imsg_obj(obj, &imsg, ibuf);
366 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
370 bff6ca00 2018-04-23 stsp imsg_free(&imsg);
372 bff6ca00 2018-04-23 stsp return err;
375 c75f7264 2018-09-11 stsp static const struct got_error *
376 c75f7264 2018-09-11 stsp send_commit_logmsg(struct imsgbuf *ibuf, struct got_commit_object *commit,
377 c75f7264 2018-09-11 stsp size_t logmsg_len)
379 fa4ffeb3 2018-11-04 stsp const struct got_error *err = NULL;
380 c75f7264 2018-09-11 stsp size_t offset, remain;
382 c75f7264 2018-09-11 stsp offset = 0;
383 c75f7264 2018-09-11 stsp remain = logmsg_len;
384 c75f7264 2018-09-11 stsp while (remain > 0) {
385 c75f7264 2018-09-11 stsp size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE, remain);
387 c75f7264 2018-09-11 stsp if (imsg_compose(ibuf, GOT_IMSG_COMMIT_LOGMSG, 0, 0, -1,
388 fa4ffeb3 2018-11-04 stsp commit->logmsg + offset, n) == -1) {
389 fa4ffeb3 2018-11-04 stsp err = got_error_from_errno();
393 fa4ffeb3 2018-11-04 stsp err = flush_imsg(ibuf);
397 c75f7264 2018-09-11 stsp offset += n;
398 c75f7264 2018-09-11 stsp remain -= n;
401 fa4ffeb3 2018-11-04 stsp return err;
404 bff6ca00 2018-04-23 stsp const struct got_error *
405 068fd2bf 2018-04-24 stsp got_privsep_send_commit(struct imsgbuf *ibuf, struct got_commit_object *commit)
407 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
408 b9c33926 2018-11-07 stsp struct got_imsg_commit_object *icommit;
409 bff6ca00 2018-04-23 stsp uint8_t *buf;
410 bff6ca00 2018-04-23 stsp size_t len, total;
411 79f35eb3 2018-06-11 stsp struct got_object_qid *qid;
412 b9c33926 2018-11-07 stsp size_t author_len = strlen(commit->author);
413 b9c33926 2018-11-07 stsp size_t committer_len = strlen(commit->committer);
414 c75f7264 2018-09-11 stsp size_t logmsg_len = strlen(commit->logmsg);
416 b9c33926 2018-11-07 stsp total = sizeof(*icommit) + author_len + committer_len +
417 b9c33926 2018-11-07 stsp commit->nparents * SHA1_DIGEST_LENGTH;
419 bff6ca00 2018-04-23 stsp buf = malloc(total);
420 bff6ca00 2018-04-23 stsp if (buf == NULL)
421 bff6ca00 2018-04-23 stsp return got_error_from_errno();
423 b9c33926 2018-11-07 stsp icommit = (struct got_imsg_commit_object *)buf;
424 b9c33926 2018-11-07 stsp memcpy(icommit->tree_id, commit->tree_id->sha1, sizeof(icommit->tree_id));
425 b9c33926 2018-11-07 stsp icommit->author_len = author_len;
426 b9c33926 2018-11-07 stsp icommit->author_time = commit->author_time;
427 b9c33926 2018-11-07 stsp icommit->author_gmtoff = commit->author_gmtoff;
428 b9c33926 2018-11-07 stsp icommit->committer_len = committer_len;
429 b9c33926 2018-11-07 stsp icommit->committer_time = commit->committer_time;
430 b9c33926 2018-11-07 stsp icommit->committer_gmtoff = commit->committer_gmtoff;
431 b9c33926 2018-11-07 stsp icommit->logmsg_len = logmsg_len;
432 b9c33926 2018-11-07 stsp icommit->nparents = commit->nparents;
434 b9c33926 2018-11-07 stsp len = sizeof(*icommit);
435 b9c33926 2018-11-07 stsp memcpy(buf + len, commit->author, author_len);
436 b9c33926 2018-11-07 stsp len += author_len;
437 b9c33926 2018-11-07 stsp memcpy(buf + len, commit->committer, committer_len);
438 b9c33926 2018-11-07 stsp len += committer_len;
439 79f35eb3 2018-06-11 stsp SIMPLEQ_FOREACH(qid, &commit->parent_ids, entry) {
440 79f35eb3 2018-06-11 stsp memcpy(buf + len, qid->id, SHA1_DIGEST_LENGTH);
441 86acc566 2018-04-23 stsp len += SHA1_DIGEST_LENGTH;
444 bff6ca00 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_COMMIT, 0, 0, -1, buf, len) == -1) {
445 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
449 904df868 2018-11-04 stsp if (logmsg_len == 0 ||
450 904df868 2018-11-04 stsp logmsg_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {
451 904df868 2018-11-04 stsp err = flush_imsg(ibuf);
455 c75f7264 2018-09-11 stsp err = send_commit_logmsg(ibuf, commit, logmsg_len);
458 bff6ca00 2018-04-23 stsp return err;
461 bff6ca00 2018-04-23 stsp const struct got_error *
462 068fd2bf 2018-04-24 stsp got_privsep_recv_commit(struct got_commit_object **commit, struct imsgbuf *ibuf)
464 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
465 bff6ca00 2018-04-23 stsp struct imsg imsg;
466 291624d8 2018-11-07 stsp struct got_imsg_commit_object *icommit;
467 bff6ca00 2018-04-23 stsp size_t len, datalen;
469 bff6ca00 2018-04-23 stsp const size_t min_datalen =
470 bff6ca00 2018-04-23 stsp MIN(sizeof(struct got_imsg_error),
471 bff6ca00 2018-04-23 stsp sizeof(struct got_imsg_commit_object));
473 bff6ca00 2018-04-23 stsp *commit = NULL;
475 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, ibuf, min_datalen);
477 bff6ca00 2018-04-23 stsp return err;
479 bff6ca00 2018-04-23 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
482 bff6ca00 2018-04-23 stsp switch (imsg.hdr.type) {
483 bff6ca00 2018-04-23 stsp case GOT_IMSG_ERROR:
484 bff6ca00 2018-04-23 stsp err = recv_imsg_error(&imsg, datalen);
486 bff6ca00 2018-04-23 stsp case GOT_IMSG_COMMIT:
487 291624d8 2018-11-07 stsp if (datalen < sizeof(*icommit)) {
488 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
491 291624d8 2018-11-07 stsp icommit = imsg.data;
492 291624d8 2018-11-07 stsp if (datalen != sizeof(*icommit) + icommit->author_len +
493 291624d8 2018-11-07 stsp icommit->committer_len +
494 291624d8 2018-11-07 stsp icommit->nparents * SHA1_DIGEST_LENGTH) {
495 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
498 291624d8 2018-11-07 stsp if (icommit->nparents < 0) {
499 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
502 291624d8 2018-11-07 stsp len += sizeof(*icommit);
504 bff6ca00 2018-04-23 stsp *commit = got_object_commit_alloc_partial();
505 bff6ca00 2018-04-23 stsp if (*commit == NULL) {
506 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
510 291624d8 2018-11-07 stsp memcpy((*commit)->tree_id->sha1, icommit->tree_id,
511 86acc566 2018-04-23 stsp SHA1_DIGEST_LENGTH);
512 291624d8 2018-11-07 stsp (*commit)->author_time = icommit->author_time;
513 291624d8 2018-11-07 stsp (*commit)->author_gmtoff = icommit->author_gmtoff;
514 291624d8 2018-11-07 stsp (*commit)->committer_time = icommit->committer_time;
515 291624d8 2018-11-07 stsp (*commit)->committer_gmtoff = icommit->committer_gmtoff;
517 291624d8 2018-11-07 stsp if (icommit->author_len == 0) {
518 bff6ca00 2018-04-23 stsp (*commit)->author = strdup("");
519 bff6ca00 2018-04-23 stsp if ((*commit)->author == NULL) {
520 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
524 291624d8 2018-11-07 stsp (*commit)->author = malloc(icommit->author_len + 1);
525 bff6ca00 2018-04-23 stsp if ((*commit)->author == NULL) {
526 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
529 291624d8 2018-11-07 stsp memcpy((*commit)->author, imsg.data + len,
530 291624d8 2018-11-07 stsp icommit->author_len);
531 291624d8 2018-11-07 stsp (*commit)->author[icommit->author_len] = '\0';
533 291624d8 2018-11-07 stsp len += icommit->author_len;
535 291624d8 2018-11-07 stsp if (icommit->committer_len == 0) {
536 bff6ca00 2018-04-23 stsp (*commit)->committer = strdup("");
537 bff6ca00 2018-04-23 stsp if ((*commit)->committer == NULL) {
538 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
542 bff6ca00 2018-04-23 stsp (*commit)->committer =
543 291624d8 2018-11-07 stsp malloc(icommit->committer_len + 1);
544 bff6ca00 2018-04-23 stsp if ((*commit)->committer == NULL) {
545 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
548 291624d8 2018-11-07 stsp memcpy((*commit)->committer, imsg.data + len,
549 291624d8 2018-11-07 stsp icommit->committer_len);
550 291624d8 2018-11-07 stsp (*commit)->committer[icommit->committer_len] = '\0';
552 291624d8 2018-11-07 stsp len += icommit->committer_len;
554 291624d8 2018-11-07 stsp if (icommit->logmsg_len == 0) {
555 bff6ca00 2018-04-23 stsp (*commit)->logmsg = strdup("");
556 bff6ca00 2018-04-23 stsp if ((*commit)->logmsg == NULL) {
557 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
561 291624d8 2018-11-07 stsp size_t offset = 0, remain = icommit->logmsg_len;
563 291624d8 2018-11-07 stsp (*commit)->logmsg = malloc(icommit->logmsg_len + 1);
564 bff6ca00 2018-04-23 stsp if ((*commit)->logmsg == NULL) {
565 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
568 c75f7264 2018-09-11 stsp while (remain > 0) {
569 c75f7264 2018-09-11 stsp struct imsg imsg_log;
570 c75f7264 2018-09-11 stsp size_t n = MIN(MAX_IMSGSIZE - IMSG_HEADER_SIZE,
573 c75f7264 2018-09-11 stsp err = got_privsep_recv_imsg(&imsg_log, ibuf, n);
575 c75f7264 2018-09-11 stsp return err;
577 c75f7264 2018-09-11 stsp if (imsg_log.hdr.type != GOT_IMSG_COMMIT_LOGMSG)
578 c75f7264 2018-09-11 stsp return got_error(GOT_ERR_PRIVSEP_MSG);
580 c75f7264 2018-09-11 stsp memcpy((*commit)->logmsg + offset,
581 c75f7264 2018-09-11 stsp imsg_log.data, n);
582 c75f7264 2018-09-11 stsp imsg_free(&imsg_log);
583 c75f7264 2018-09-11 stsp offset += n;
584 c75f7264 2018-09-11 stsp remain -= n;
586 291624d8 2018-11-07 stsp (*commit)->logmsg[icommit->logmsg_len] = '\0';
589 291624d8 2018-11-07 stsp for (i = 0; i < icommit->nparents; i++) {
590 79f35eb3 2018-06-11 stsp struct got_object_qid *qid;
592 5df4932d 2018-11-05 stsp err = got_object_qid_alloc_partial(&qid);
595 291624d8 2018-11-07 stsp memcpy(qid->id, imsg.data + len +
596 291624d8 2018-11-07 stsp i * SHA1_DIGEST_LENGTH, sizeof(*qid->id));
597 7762fe12 2018-11-05 stsp SIMPLEQ_INSERT_TAIL(&(*commit)->parent_ids, qid, entry);
598 7762fe12 2018-11-05 stsp (*commit)->nparents++;
602 8c580685 2018-04-22 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
606 2178c42e 2018-04-22 stsp imsg_free(&imsg);
608 e033d803 2018-04-23 stsp return err;
611 e033d803 2018-04-23 stsp const struct got_error *
612 068fd2bf 2018-04-24 stsp got_privsep_send_tree(struct imsgbuf *ibuf, struct got_tree_object *tree)
614 e033d803 2018-04-23 stsp const struct got_error *err = NULL;
615 e033d803 2018-04-23 stsp struct got_imsg_tree_object itree;
616 e033d803 2018-04-23 stsp struct got_tree_entry *te;
617 b00c9821 2018-11-04 stsp size_t totlen;
618 6eb07a17 2018-11-04 stsp int nimsg; /* number of imsg queued in ibuf */
620 883f0469 2018-06-23 stsp itree.nentries = tree->entries.nentries;
621 e033d803 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE, 0, 0, -1, &itree, sizeof(itree))
623 e033d803 2018-04-23 stsp return got_error_from_errno();
625 b00c9821 2018-11-04 stsp totlen = sizeof(itree);
627 883f0469 2018-06-23 stsp SIMPLEQ_FOREACH(te, &tree->entries.head, entry) {
628 a58a49db 2018-11-07 stsp struct got_imsg_tree_entry *ite;
629 e033d803 2018-04-23 stsp uint8_t *buf = NULL;
630 a58a49db 2018-11-07 stsp size_t len = sizeof(*ite) + strlen(te->name);
632 e033d803 2018-04-23 stsp if (len > MAX_IMSGSIZE)
633 e033d803 2018-04-23 stsp return got_error(GOT_ERR_NO_SPACE);
636 6eb07a17 2018-11-04 stsp if (totlen + len >= MAX_IMSGSIZE - (IMSG_HEADER_SIZE * nimsg)) {
637 b00c9821 2018-11-04 stsp err = flush_imsg(ibuf);
639 b00c9821 2018-11-04 stsp return err;
643 e033d803 2018-04-23 stsp buf = malloc(len);
644 e033d803 2018-04-23 stsp if (buf == NULL)
645 e033d803 2018-04-23 stsp return got_error_from_errno();
647 a58a49db 2018-11-07 stsp ite = (struct got_imsg_tree_entry *)buf;
648 a58a49db 2018-11-07 stsp memcpy(ite->id, te->id->sha1, sizeof(ite->id));
649 a58a49db 2018-11-07 stsp ite->mode = te->mode;
650 a58a49db 2018-11-07 stsp memcpy(buf + sizeof(*ite), te->name, strlen(te->name));
652 e033d803 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE_ENTRY, 0, 0, -1,
653 e033d803 2018-04-23 stsp buf, len) == -1)
654 e033d803 2018-04-23 stsp err = got_error_from_errno();
657 e033d803 2018-04-23 stsp return err;
658 b00c9821 2018-11-04 stsp totlen += len;
661 b00c9821 2018-11-04 stsp return flush_imsg(ibuf);
664 e033d803 2018-04-23 stsp const struct got_error *
665 068fd2bf 2018-04-24 stsp got_privsep_recv_tree(struct got_tree_object **tree, struct imsgbuf *ibuf)
667 e033d803 2018-04-23 stsp const struct got_error *err = NULL;
668 e033d803 2018-04-23 stsp const size_t min_datalen =
669 e033d803 2018-04-23 stsp MIN(sizeof(struct got_imsg_error),
670 e033d803 2018-04-23 stsp sizeof(struct got_imsg_tree_object));
671 291624d8 2018-11-07 stsp struct got_imsg_tree_object *itree;
672 e033d803 2018-04-23 stsp int nentries = 0;
674 e033d803 2018-04-23 stsp *tree = NULL;
676 e033d803 2018-04-23 stsp err = read_imsg(ibuf);
680 e033d803 2018-04-23 stsp while (1) {
681 e033d803 2018-04-23 stsp struct imsg imsg;
683 e033d803 2018-04-23 stsp size_t datalen;
684 c0588d8d 2018-11-07 stsp struct got_imsg_tree_entry *ite;
685 e033d803 2018-04-23 stsp struct got_tree_entry *te = NULL;
687 e033d803 2018-04-23 stsp n = imsg_get(ibuf, &imsg);
688 e033d803 2018-04-23 stsp if (n == 0) {
689 883f0469 2018-06-23 stsp if (*tree && (*tree)->entries.nentries != nentries)
690 e033d803 2018-04-23 stsp goto get_more;
694 e033d803 2018-04-23 stsp if (imsg.hdr.len < IMSG_HEADER_SIZE + min_datalen)
695 e033d803 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
697 e033d803 2018-04-23 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
699 e033d803 2018-04-23 stsp switch (imsg.hdr.type) {
700 e033d803 2018-04-23 stsp case GOT_IMSG_ERROR:
701 e033d803 2018-04-23 stsp err = recv_imsg_error(&imsg, datalen);
703 e033d803 2018-04-23 stsp case GOT_IMSG_TREE:
704 e033d803 2018-04-23 stsp /* This message should only appear once. */
705 e033d803 2018-04-23 stsp if (*tree != NULL) {
706 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
709 291624d8 2018-11-07 stsp if (datalen != sizeof(*itree)) {
710 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
713 291624d8 2018-11-07 stsp itree = imsg.data;
714 c3b78ecc 2018-11-07 stsp *tree = malloc(sizeof(**tree));
715 e033d803 2018-04-23 stsp if (*tree == NULL) {
716 e033d803 2018-04-23 stsp err = got_error_from_errno();
719 291624d8 2018-11-07 stsp (*tree)->entries.nentries = itree->nentries;
720 883f0469 2018-06-23 stsp SIMPLEQ_INIT(&(*tree)->entries.head);
721 c3b78ecc 2018-11-07 stsp (*tree)->refcnt = 0;
723 e033d803 2018-04-23 stsp case GOT_IMSG_TREE_ENTRY:
724 e033d803 2018-04-23 stsp /* This message should be preceeded by GOT_IMSG_TREE. */
725 e033d803 2018-04-23 stsp if (*tree == NULL) {
726 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
729 c0588d8d 2018-11-07 stsp if (datalen < sizeof(*ite) || datalen > MAX_IMSGSIZE) {
730 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
734 e033d803 2018-04-23 stsp /* Remaining data contains the entry's name. */
735 c0588d8d 2018-11-07 stsp datalen -= sizeof(*ite);
736 e033d803 2018-04-23 stsp if (datalen == 0 || datalen > MAX_IMSGSIZE) {
737 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
740 c0588d8d 2018-11-07 stsp ite = imsg.data;
742 e033d803 2018-04-23 stsp te = got_alloc_tree_entry_partial();
743 e033d803 2018-04-23 stsp if (te == NULL) {
744 e033d803 2018-04-23 stsp err = got_error_from_errno();
747 e033d803 2018-04-23 stsp te->name = malloc(datalen + 1);
748 e033d803 2018-04-23 stsp if (te->name == NULL) {
750 e033d803 2018-04-23 stsp err = got_error_from_errno();
753 c0588d8d 2018-11-07 stsp memcpy(te->name, imsg.data + sizeof(*ite), datalen);
754 e033d803 2018-04-23 stsp te->name[datalen] = '\0';
756 c0588d8d 2018-11-07 stsp memcpy(te->id->sha1, ite->id, SHA1_DIGEST_LENGTH);
757 c0588d8d 2018-11-07 stsp te->mode = ite->mode;
758 883f0469 2018-06-23 stsp SIMPLEQ_INSERT_TAIL(&(*tree)->entries.head, te, entry);
759 e033d803 2018-04-23 stsp nentries++;
762 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
766 e033d803 2018-04-23 stsp imsg_free(&imsg);
769 883f0469 2018-06-23 stsp if (*tree && (*tree)->entries.nentries != nentries) {
770 1e51f5b9 2018-04-23 stsp if (err == NULL)
771 1e51f5b9 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
772 e033d803 2018-04-23 stsp got_object_tree_close(*tree);
773 e033d803 2018-04-23 stsp *tree = NULL;
776 ff6b18f8 2018-04-24 stsp return err;
779 ff6b18f8 2018-04-24 stsp const struct got_error *
780 2967a784 2018-04-24 stsp got_privsep_send_blob(struct imsgbuf *ibuf, size_t size)
782 2967a784 2018-04-24 stsp struct got_imsg_blob iblob;
784 2967a784 2018-04-24 stsp iblob.size = size;
785 ff6b18f8 2018-04-24 stsp /* Data has already been written to file descriptor. */
787 2967a784 2018-04-24 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, &iblob, sizeof(iblob))
789 ff6b18f8 2018-04-24 stsp return got_error_from_errno();
791 ff6b18f8 2018-04-24 stsp return flush_imsg(ibuf);
794 ff6b18f8 2018-04-24 stsp const struct got_error *
795 2967a784 2018-04-24 stsp got_privsep_recv_blob(size_t *size, struct imsgbuf *ibuf)
797 ff6b18f8 2018-04-24 stsp const struct got_error *err = NULL;
798 ff6b18f8 2018-04-24 stsp struct imsg imsg;
799 291624d8 2018-11-07 stsp struct got_imsg_blob *iblob;
800 ff6b18f8 2018-04-24 stsp size_t datalen;
802 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, ibuf, 0);
804 ff6b18f8 2018-04-24 stsp return err;
806 ff6b18f8 2018-04-24 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
808 ff6b18f8 2018-04-24 stsp switch (imsg.hdr.type) {
809 ff6b18f8 2018-04-24 stsp case GOT_IMSG_ERROR:
810 ff6b18f8 2018-04-24 stsp err = recv_imsg_error(&imsg, datalen);
812 ff6b18f8 2018-04-24 stsp case GOT_IMSG_BLOB:
813 291624d8 2018-11-07 stsp if (datalen != sizeof(*iblob)) {
814 ff6b18f8 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
817 291624d8 2018-11-07 stsp iblob = imsg.data;
818 291624d8 2018-11-07 stsp *size = iblob->size;
819 ff6b18f8 2018-04-24 stsp /* Data has been written to file descriptor. */
822 ff6b18f8 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
826 ff6b18f8 2018-04-24 stsp imsg_free(&imsg);
828 2178c42e 2018-04-22 stsp return err;
831 876c234b 2018-09-10 stsp const struct got_error *
832 876c234b 2018-09-10 stsp got_privsep_init_pack_child(struct imsgbuf *ibuf, struct got_pack *pack,
833 876c234b 2018-09-10 stsp struct got_packidx *packidx)
835 876c234b 2018-09-10 stsp struct got_imsg_packidx ipackidx;
836 876c234b 2018-09-10 stsp struct got_imsg_pack ipack;
839 876c234b 2018-09-10 stsp ipackidx.len = packidx->len;
840 876c234b 2018-09-10 stsp fd = dup(packidx->fd);
841 876c234b 2018-09-10 stsp if (fd == -1)
842 876c234b 2018-09-10 stsp return got_error_from_errno();
844 876c234b 2018-09-10 stsp if (imsg_compose(ibuf, GOT_IMSG_PACKIDX, 0, 0, fd, &ipackidx,
845 876c234b 2018-09-10 stsp sizeof(ipackidx)) == -1)
846 876c234b 2018-09-10 stsp return got_error_from_errno();
848 876c234b 2018-09-10 stsp if (strlcpy(ipack.path_packfile, pack->path_packfile,
849 876c234b 2018-09-10 stsp sizeof(ipack.path_packfile)) >= sizeof(ipack.path_packfile))
850 876c234b 2018-09-10 stsp return got_error(GOT_ERR_NO_SPACE);
851 876c234b 2018-09-10 stsp ipack.filesize = pack->filesize;
853 876c234b 2018-09-10 stsp fd = dup(pack->fd);
854 876c234b 2018-09-10 stsp if (fd == -1)
855 876c234b 2018-09-10 stsp return got_error_from_errno();
857 876c234b 2018-09-10 stsp if (imsg_compose(ibuf, GOT_IMSG_PACK, 0, 0, fd, &ipack, sizeof(ipack))
859 876c234b 2018-09-10 stsp return got_error_from_errno();
861 876c234b 2018-09-10 stsp return flush_imsg(ibuf);
864 876c234b 2018-09-10 stsp const struct got_error *
865 106807b4 2018-09-15 stsp got_privsep_send_packed_obj_req(struct imsgbuf *ibuf, int idx,
866 106807b4 2018-09-15 stsp struct got_object_id *id)
868 876c234b 2018-09-10 stsp struct got_imsg_packed_object iobj;
870 876c234b 2018-09-10 stsp iobj.idx = idx;
871 106807b4 2018-09-15 stsp memcpy(iobj.id, id->sha1, sizeof(iobj.id));
873 876c234b 2018-09-10 stsp if (imsg_compose(ibuf, GOT_IMSG_PACKED_OBJECT_REQUEST, 0, 0, -1,
874 876c234b 2018-09-10 stsp &iobj, sizeof(iobj)) == -1)
875 876c234b 2018-09-10 stsp return got_error_from_errno();
877 876c234b 2018-09-10 stsp return flush_imsg(ibuf);