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>
21 2178c42e 2018-04-22 stsp #include <stdio.h>
22 2178c42e 2018-04-22 stsp #include <stdlib.h>
23 2178c42e 2018-04-22 stsp #include <string.h>
24 2178c42e 2018-04-22 stsp #include <errno.h>
25 2178c42e 2018-04-22 stsp #include <stdint.h>
26 2178c42e 2018-04-22 stsp #include <poll.h>
27 2178c42e 2018-04-22 stsp #include <imsg.h>
28 2178c42e 2018-04-22 stsp #include <sha1.h>
29 2178c42e 2018-04-22 stsp #include <zlib.h>
30 788c352e 2018-06-16 stsp #include <time.h>
32 2178c42e 2018-04-22 stsp #include "got_object.h"
33 2178c42e 2018-04-22 stsp #include "got_error.h"
35 2178c42e 2018-04-22 stsp #include "got_lib_sha1.h"
36 2178c42e 2018-04-22 stsp #include "got_lib_delta.h"
37 63581804 2018-07-09 stsp #include "got_lib_inflate.h"
38 2178c42e 2018-04-22 stsp #include "got_lib_object.h"
39 a440fac0 2018-09-06 stsp #include "got_lib_object_parse.h"
40 2178c42e 2018-04-22 stsp #include "got_lib_privsep.h"
43 2178c42e 2018-04-22 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
46 2178c42e 2018-04-22 stsp static const struct got_error *
47 2178c42e 2018-04-22 stsp poll_fd(int fd, int events, int timeout)
49 2178c42e 2018-04-22 stsp struct pollfd pfd[1];
52 2178c42e 2018-04-22 stsp pfd[0].fd = fd;
53 2178c42e 2018-04-22 stsp pfd[0].events = events;
55 2178c42e 2018-04-22 stsp n = poll(pfd, 1, timeout);
56 2178c42e 2018-04-22 stsp if (n == -1)
57 2178c42e 2018-04-22 stsp return got_error_from_errno();
59 2178c42e 2018-04-22 stsp return got_error(GOT_ERR_TIMEOUT);
60 2178c42e 2018-04-22 stsp if (pfd[0].revents & (POLLERR | POLLNVAL))
61 2178c42e 2018-04-22 stsp return got_error_from_errno();
62 2178c42e 2018-04-22 stsp if (pfd[0].revents & (events | POLLHUP))
63 2178c42e 2018-04-22 stsp return NULL;
65 2178c42e 2018-04-22 stsp return got_error(GOT_ERR_INTERRUPT);
68 c4eae628 2018-04-23 stsp static const struct got_error *
69 e033d803 2018-04-23 stsp read_imsg(struct imsgbuf *ibuf)
71 fe36cf76 2018-04-23 stsp const struct got_error *err;
74 fe36cf76 2018-04-23 stsp err = poll_fd(ibuf->fd, POLLIN, INFTIM);
78 fe36cf76 2018-04-23 stsp n = imsg_read(ibuf);
79 fe36cf76 2018-04-23 stsp if (n == -1) {
80 fe36cf76 2018-04-23 stsp if (errno == EAGAIN) /* Could be a file-descriptor leak. */
81 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_NO_FD);
82 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_READ);
85 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_PIPE);
87 e033d803 2018-04-23 stsp return NULL;
90 e033d803 2018-04-23 stsp static const struct got_error *
91 e033d803 2018-04-23 stsp recv_one_imsg(struct imsg *imsg, struct imsgbuf *ibuf, size_t min_datalen)
93 e033d803 2018-04-23 stsp const struct got_error *err;
96 e033d803 2018-04-23 stsp err = read_imsg(ibuf);
100 e033d803 2018-04-23 stsp n = imsg_get(ibuf, imsg);
101 e033d803 2018-04-23 stsp if (n == 0)
102 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_READ);
104 fe36cf76 2018-04-23 stsp if (imsg->hdr.len < IMSG_HEADER_SIZE + min_datalen)
105 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
107 fe36cf76 2018-04-23 stsp return NULL;
110 fe36cf76 2018-04-23 stsp static const struct got_error *
111 c4eae628 2018-04-23 stsp recv_imsg_error(struct imsg *imsg, size_t datalen)
113 c4eae628 2018-04-23 stsp struct got_imsg_error ierr;
115 c4eae628 2018-04-23 stsp if (datalen != sizeof(ierr))
116 c4eae628 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
118 c4eae628 2018-04-23 stsp memcpy(&ierr, imsg->data, sizeof(ierr));
119 c4eae628 2018-04-23 stsp if (ierr.code == GOT_ERR_ERRNO) {
120 c4eae628 2018-04-23 stsp static struct got_error serr;
121 c4eae628 2018-04-23 stsp serr.code = GOT_ERR_ERRNO;
122 c4eae628 2018-04-23 stsp serr.msg = strerror(ierr.errno_code);
123 c4eae628 2018-04-23 stsp return &serr;
126 c4eae628 2018-04-23 stsp return got_error(ierr.code);
129 2178c42e 2018-04-22 stsp /* Attempt to send an error in an imsg. Complain on stderr as a last resort. */
131 2178c42e 2018-04-22 stsp got_privsep_send_error(struct imsgbuf *ibuf, const struct got_error *err)
133 2178c42e 2018-04-22 stsp const struct got_error *poll_err;
134 2178c42e 2018-04-22 stsp struct got_imsg_error ierr;
137 2178c42e 2018-04-22 stsp ierr.code = err->code;
138 2178c42e 2018-04-22 stsp if (err->code == GOT_ERR_ERRNO)
139 2178c42e 2018-04-22 stsp ierr.errno_code = errno;
141 2178c42e 2018-04-22 stsp ierr.errno_code = 0;
142 2178c42e 2018-04-22 stsp ret = imsg_compose(ibuf, GOT_IMSG_ERROR, 0, 0, -1, &ierr, sizeof(ierr));
143 2178c42e 2018-04-22 stsp if (ret != -1) {
144 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": imsg_compose: %s\n",
145 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, strerror(errno));
149 2178c42e 2018-04-22 stsp poll_err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
150 5d43e84d 2018-04-23 stsp if (poll_err) {
151 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": poll: %s\n",
152 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, poll_err->msg);
156 2178c42e 2018-04-22 stsp ret = imsg_flush(ibuf);
157 5d43e84d 2018-04-23 stsp if (ret == -1) {
158 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": imsg_flush: %s\n",
159 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, strerror(errno));
164 e033d803 2018-04-23 stsp static const struct got_error *
165 e033d803 2018-04-23 stsp flush_imsg(struct imsgbuf *ibuf)
167 e033d803 2018-04-23 stsp const struct got_error *err;
169 e033d803 2018-04-23 stsp err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
171 e033d803 2018-04-23 stsp return err;
173 e033d803 2018-04-23 stsp if (imsg_flush(ibuf) == -1)
174 e033d803 2018-04-23 stsp return got_error_from_errno();
176 e033d803 2018-04-23 stsp return NULL;
179 2178c42e 2018-04-22 stsp const struct got_error *
180 2178c42e 2018-04-22 stsp got_privsep_send_obj(struct imsgbuf *ibuf, struct got_object *obj, int ndeltas)
182 2178c42e 2018-04-22 stsp struct got_imsg_object iobj;
184 2178c42e 2018-04-22 stsp iobj.type = obj->type;
185 2178c42e 2018-04-22 stsp iobj.flags = obj->flags;
186 2178c42e 2018-04-22 stsp iobj.hdrlen = obj->hdrlen;
187 2178c42e 2018-04-22 stsp iobj.size = obj->size;
188 2178c42e 2018-04-22 stsp iobj.ndeltas = ndeltas;
190 2178c42e 2018-04-22 stsp if (ndeltas > 0) {
191 2178c42e 2018-04-22 stsp /* TODO: Handle deltas */
194 2178c42e 2018-04-22 stsp if (imsg_compose(ibuf, GOT_IMSG_OBJECT, 0, 0, -1, &iobj, sizeof(iobj))
196 2178c42e 2018-04-22 stsp return got_error_from_errno();
198 e033d803 2018-04-23 stsp return flush_imsg(ibuf);
201 2178c42e 2018-04-22 stsp const struct got_error *
202 2178c42e 2018-04-22 stsp got_privsep_recv_obj(struct got_object **obj, struct imsgbuf *ibuf)
204 2178c42e 2018-04-22 stsp const struct got_error *err = NULL;
205 2178c42e 2018-04-22 stsp struct imsg imsg;
206 2178c42e 2018-04-22 stsp struct got_imsg_object iobj;
207 2178c42e 2018-04-22 stsp size_t datalen;
209 c4eae628 2018-04-23 stsp const size_t min_datalen =
210 c4eae628 2018-04-23 stsp MIN(sizeof(struct got_imsg_error), sizeof(struct got_imsg_object));
212 2178c42e 2018-04-22 stsp *obj = NULL;
214 fe36cf76 2018-04-23 stsp err = recv_one_imsg(&imsg, ibuf, min_datalen);
216 2178c42e 2018-04-22 stsp return err;
218 2178c42e 2018-04-22 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
220 2178c42e 2018-04-22 stsp switch (imsg.hdr.type) {
221 2178c42e 2018-04-22 stsp case GOT_IMSG_ERROR:
222 c4eae628 2018-04-23 stsp err = recv_imsg_error(&imsg, datalen);
224 2178c42e 2018-04-22 stsp case GOT_IMSG_OBJECT:
225 2178c42e 2018-04-22 stsp if (datalen != sizeof(iobj)) {
226 2178c42e 2018-04-22 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
230 2178c42e 2018-04-22 stsp memcpy(&iobj, imsg.data, sizeof(iobj));
231 2178c42e 2018-04-22 stsp if (iobj.ndeltas < 0 ||
232 2178c42e 2018-04-22 stsp iobj.ndeltas > GOT_DELTA_CHAIN_RECURSION_MAX) {
233 2178c42e 2018-04-22 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
237 2178c42e 2018-04-22 stsp *obj = calloc(1, sizeof(**obj));
238 2178c42e 2018-04-22 stsp if (*obj == NULL) {
239 2178c42e 2018-04-22 stsp err = got_error_from_errno();
243 2178c42e 2018-04-22 stsp (*obj)->type = iobj.type;
244 2178c42e 2018-04-22 stsp (*obj)->hdrlen = iobj.hdrlen;
245 2178c42e 2018-04-22 stsp (*obj)->size = iobj.size;
246 2178c42e 2018-04-22 stsp for (i = 0; i < iobj.ndeltas; i++) {
247 2178c42e 2018-04-22 stsp /* TODO: Handle deltas */
251 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
255 bff6ca00 2018-04-23 stsp imsg_free(&imsg);
257 bff6ca00 2018-04-23 stsp return err;
260 bff6ca00 2018-04-23 stsp const struct got_error *
261 068fd2bf 2018-04-24 stsp got_privsep_send_commit(struct imsgbuf *ibuf, struct got_commit_object *commit)
263 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
264 bff6ca00 2018-04-23 stsp struct got_imsg_commit_object icommit;
265 bff6ca00 2018-04-23 stsp uint8_t *buf;
266 bff6ca00 2018-04-23 stsp size_t len, total;
267 79f35eb3 2018-06-11 stsp struct got_object_qid *qid;
269 86acc566 2018-04-23 stsp memcpy(icommit.tree_id, commit->tree_id->sha1, sizeof(icommit.tree_id));
270 bff6ca00 2018-04-23 stsp icommit.author_len = strlen(commit->author);
271 788c352e 2018-06-16 stsp memcpy(&icommit.tm_author, &commit->tm_author,
272 788c352e 2018-06-16 stsp sizeof(icommit.tm_author));
273 bff6ca00 2018-04-23 stsp icommit.committer_len = strlen(commit->committer);
274 788c352e 2018-06-16 stsp memcpy(&icommit.tm_committer, &commit->tm_committer,
275 788c352e 2018-06-16 stsp sizeof(icommit.tm_committer));
276 bff6ca00 2018-04-23 stsp icommit.logmsg_len = strlen(commit->logmsg);
277 bff6ca00 2018-04-23 stsp icommit.nparents = commit->nparents;
279 bff6ca00 2018-04-23 stsp total = sizeof(icommit) + icommit.author_len +
280 788c352e 2018-06-16 stsp icommit.committer_len + icommit.logmsg_len +
281 86acc566 2018-04-23 stsp icommit.nparents * SHA1_DIGEST_LENGTH;
282 bff6ca00 2018-04-23 stsp /* XXX TODO support very large log messages properly */
283 bff6ca00 2018-04-23 stsp if (total > MAX_IMSGSIZE)
284 bff6ca00 2018-04-23 stsp return got_error(GOT_ERR_NO_SPACE);
286 bff6ca00 2018-04-23 stsp buf = malloc(total);
287 bff6ca00 2018-04-23 stsp if (buf == NULL)
288 bff6ca00 2018-04-23 stsp return got_error_from_errno();
291 bff6ca00 2018-04-23 stsp memcpy(buf + len, &icommit, sizeof(icommit));
292 bff6ca00 2018-04-23 stsp len += sizeof(icommit);
293 bff6ca00 2018-04-23 stsp memcpy(buf + len, commit->author, icommit.author_len);
294 bff6ca00 2018-04-23 stsp len += icommit.author_len;
295 bff6ca00 2018-04-23 stsp memcpy(buf + len, commit->committer, icommit.committer_len);
296 bff6ca00 2018-04-23 stsp len += icommit.committer_len;
297 bff6ca00 2018-04-23 stsp memcpy(buf + len, commit->logmsg, icommit.logmsg_len);
298 bff6ca00 2018-04-23 stsp len += icommit.logmsg_len;
299 79f35eb3 2018-06-11 stsp SIMPLEQ_FOREACH(qid, &commit->parent_ids, entry) {
300 79f35eb3 2018-06-11 stsp memcpy(buf + len, qid->id, SHA1_DIGEST_LENGTH);
301 86acc566 2018-04-23 stsp len += SHA1_DIGEST_LENGTH;
304 bff6ca00 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_COMMIT, 0, 0, -1, buf, len) == -1) {
305 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
309 e033d803 2018-04-23 stsp err = flush_imsg(ibuf);
312 bff6ca00 2018-04-23 stsp return err;
314 bff6ca00 2018-04-23 stsp const struct got_error *
315 068fd2bf 2018-04-24 stsp got_privsep_recv_commit(struct got_commit_object **commit, struct imsgbuf *ibuf)
317 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
318 bff6ca00 2018-04-23 stsp struct imsg imsg;
319 bff6ca00 2018-04-23 stsp struct got_imsg_commit_object icommit;
320 bff6ca00 2018-04-23 stsp size_t len, datalen;
322 bff6ca00 2018-04-23 stsp const size_t min_datalen =
323 bff6ca00 2018-04-23 stsp MIN(sizeof(struct got_imsg_error),
324 bff6ca00 2018-04-23 stsp sizeof(struct got_imsg_commit_object));
325 bff6ca00 2018-04-23 stsp uint8_t *data;
327 bff6ca00 2018-04-23 stsp *commit = NULL;
329 bff6ca00 2018-04-23 stsp err = recv_one_imsg(&imsg, ibuf, min_datalen);
331 bff6ca00 2018-04-23 stsp return err;
333 bff6ca00 2018-04-23 stsp data = imsg.data;
334 bff6ca00 2018-04-23 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
337 bff6ca00 2018-04-23 stsp switch (imsg.hdr.type) {
338 bff6ca00 2018-04-23 stsp case GOT_IMSG_ERROR:
339 bff6ca00 2018-04-23 stsp err = recv_imsg_error(&imsg, datalen);
341 bff6ca00 2018-04-23 stsp case GOT_IMSG_COMMIT:
342 bff6ca00 2018-04-23 stsp if (datalen < sizeof(icommit)) {
343 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
347 bff6ca00 2018-04-23 stsp memcpy(&icommit, data, sizeof(icommit));
348 bff6ca00 2018-04-23 stsp if (datalen != sizeof(icommit) + icommit.author_len +
349 788c352e 2018-06-16 stsp icommit.committer_len + icommit.logmsg_len +
350 86acc566 2018-04-23 stsp icommit.nparents * SHA1_DIGEST_LENGTH) {
351 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
354 bff6ca00 2018-04-23 stsp if (icommit.nparents < 0) {
355 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
358 bff6ca00 2018-04-23 stsp len += sizeof(icommit);
360 bff6ca00 2018-04-23 stsp *commit = got_object_commit_alloc_partial();
361 bff6ca00 2018-04-23 stsp if (*commit == NULL) {
362 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
366 86acc566 2018-04-23 stsp memcpy((*commit)->tree_id->sha1, icommit.tree_id,
367 86acc566 2018-04-23 stsp SHA1_DIGEST_LENGTH);
368 788c352e 2018-06-16 stsp memcpy(&(*commit)->tm_author, &icommit.tm_author,
369 788c352e 2018-06-16 stsp sizeof((*commit)->tm_author));
370 788c352e 2018-06-16 stsp memcpy(&(*commit)->tm_committer, &icommit.tm_committer,
371 788c352e 2018-06-16 stsp sizeof((*commit)->tm_committer));
373 bff6ca00 2018-04-23 stsp if (icommit.author_len == 0) {
374 bff6ca00 2018-04-23 stsp (*commit)->author = strdup("");
375 bff6ca00 2018-04-23 stsp if ((*commit)->author == NULL) {
376 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
380 bff6ca00 2018-04-23 stsp (*commit)->author = malloc(icommit.author_len + 1);
381 bff6ca00 2018-04-23 stsp if ((*commit)->author == NULL) {
382 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
385 bff6ca00 2018-04-23 stsp memcpy((*commit)->author, data + len,
386 bff6ca00 2018-04-23 stsp icommit.author_len);
387 bff6ca00 2018-04-23 stsp (*commit)->author[icommit.author_len] = '\0';
389 bff6ca00 2018-04-23 stsp len += icommit.author_len;
391 bff6ca00 2018-04-23 stsp if (icommit.committer_len == 0) {
392 bff6ca00 2018-04-23 stsp (*commit)->committer = strdup("");
393 bff6ca00 2018-04-23 stsp if ((*commit)->committer == NULL) {
394 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
398 bff6ca00 2018-04-23 stsp (*commit)->committer =
399 bff6ca00 2018-04-23 stsp malloc(icommit.committer_len + 1);
400 bff6ca00 2018-04-23 stsp if ((*commit)->committer == NULL) {
401 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
404 bff6ca00 2018-04-23 stsp memcpy((*commit)->committer, data + len,
405 bff6ca00 2018-04-23 stsp icommit.committer_len);
406 bff6ca00 2018-04-23 stsp (*commit)->committer[icommit.committer_len] = '\0';
408 bff6ca00 2018-04-23 stsp len += icommit.committer_len;
410 bff6ca00 2018-04-23 stsp if (icommit.logmsg_len == 0) {
411 bff6ca00 2018-04-23 stsp (*commit)->logmsg = strdup("");
412 bff6ca00 2018-04-23 stsp if ((*commit)->logmsg == NULL) {
413 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
417 bff6ca00 2018-04-23 stsp (*commit)->logmsg = malloc(icommit.logmsg_len + 1);
418 bff6ca00 2018-04-23 stsp if ((*commit)->logmsg == NULL) {
419 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
422 bff6ca00 2018-04-23 stsp memcpy((*commit)->logmsg, data + len,
423 bff6ca00 2018-04-23 stsp icommit.logmsg_len);
424 bff6ca00 2018-04-23 stsp (*commit)->logmsg[icommit.logmsg_len] = '\0';
426 bff6ca00 2018-04-23 stsp len += icommit.logmsg_len;
428 bff6ca00 2018-04-23 stsp for (i = 0; i < icommit.nparents; i++) {
429 79f35eb3 2018-06-11 stsp struct got_object_qid *qid;
431 79f35eb3 2018-06-11 stsp qid = calloc(1, sizeof(*qid));
432 79f35eb3 2018-06-11 stsp if (qid == NULL) {
433 86acc566 2018-04-23 stsp err = got_error_from_errno();
436 79f35eb3 2018-06-11 stsp qid->id = calloc(1, sizeof(*qid->id));
437 79f35eb3 2018-06-11 stsp if (qid->id == NULL) {
438 86acc566 2018-04-23 stsp err = got_error_from_errno();
443 79f35eb3 2018-06-11 stsp memcpy(qid->id, data + len + i * SHA1_DIGEST_LENGTH,
444 79f35eb3 2018-06-11 stsp sizeof(*qid->id));
445 79f35eb3 2018-06-11 stsp SIMPLEQ_INSERT_TAIL(&(*commit)->parent_ids, qid, entry);
446 86acc566 2018-04-23 stsp (*commit)->nparents++;
450 8c580685 2018-04-22 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
454 2178c42e 2018-04-22 stsp imsg_free(&imsg);
456 e033d803 2018-04-23 stsp return err;
459 e033d803 2018-04-23 stsp const struct got_error *
460 068fd2bf 2018-04-24 stsp got_privsep_send_tree(struct imsgbuf *ibuf, struct got_tree_object *tree)
462 e033d803 2018-04-23 stsp const struct got_error *err = NULL;
463 e033d803 2018-04-23 stsp struct got_imsg_tree_object itree;
464 e033d803 2018-04-23 stsp struct got_tree_entry *te;
466 883f0469 2018-06-23 stsp itree.nentries = tree->entries.nentries;
467 e033d803 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE, 0, 0, -1, &itree, sizeof(itree))
469 e033d803 2018-04-23 stsp return got_error_from_errno();
471 e033d803 2018-04-23 stsp err = flush_imsg(ibuf);
473 e033d803 2018-04-23 stsp return err;
475 883f0469 2018-06-23 stsp SIMPLEQ_FOREACH(te, &tree->entries.head, entry) {
476 e033d803 2018-04-23 stsp struct got_imsg_tree_entry ite;
477 e033d803 2018-04-23 stsp uint8_t *buf = NULL;
478 e033d803 2018-04-23 stsp size_t len = sizeof(ite) + strlen(te->name);
480 e033d803 2018-04-23 stsp if (len > MAX_IMSGSIZE)
481 e033d803 2018-04-23 stsp return got_error(GOT_ERR_NO_SPACE);
483 e033d803 2018-04-23 stsp buf = malloc(len);
484 e033d803 2018-04-23 stsp if (buf == NULL)
485 e033d803 2018-04-23 stsp return got_error_from_errno();
487 e033d803 2018-04-23 stsp memcpy(ite.id, te->id->sha1, sizeof(ite.id));
488 e033d803 2018-04-23 stsp ite.mode = te->mode;
489 e033d803 2018-04-23 stsp memcpy(buf, &ite, sizeof(ite));
490 e033d803 2018-04-23 stsp memcpy(buf + sizeof(ite), te->name, strlen(te->name));
492 e033d803 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE_ENTRY, 0, 0, -1,
493 e033d803 2018-04-23 stsp buf, len) == -1)
494 e033d803 2018-04-23 stsp err = got_error_from_errno();
497 e033d803 2018-04-23 stsp return err;
499 e033d803 2018-04-23 stsp err = flush_imsg(ibuf);
501 e033d803 2018-04-23 stsp return err;
504 e033d803 2018-04-23 stsp return NULL;
507 e033d803 2018-04-23 stsp const struct got_error *
508 068fd2bf 2018-04-24 stsp got_privsep_recv_tree(struct got_tree_object **tree, struct imsgbuf *ibuf)
510 e033d803 2018-04-23 stsp const struct got_error *err = NULL;
511 e033d803 2018-04-23 stsp const size_t min_datalen =
512 e033d803 2018-04-23 stsp MIN(sizeof(struct got_imsg_error),
513 e033d803 2018-04-23 stsp sizeof(struct got_imsg_tree_object));
514 e033d803 2018-04-23 stsp struct got_imsg_tree_object itree = { 0 };
515 e033d803 2018-04-23 stsp int nentries = 0;
517 e033d803 2018-04-23 stsp *tree = NULL;
519 e033d803 2018-04-23 stsp err = read_imsg(ibuf);
523 e033d803 2018-04-23 stsp while (1) {
524 e033d803 2018-04-23 stsp struct imsg imsg;
526 e033d803 2018-04-23 stsp size_t datalen;
527 e033d803 2018-04-23 stsp struct got_imsg_tree_entry ite;
528 e033d803 2018-04-23 stsp struct got_tree_entry *te = NULL;
530 e033d803 2018-04-23 stsp n = imsg_get(ibuf, &imsg);
531 e033d803 2018-04-23 stsp if (n == 0) {
532 883f0469 2018-06-23 stsp if (*tree && (*tree)->entries.nentries != nentries)
533 e033d803 2018-04-23 stsp goto get_more;
537 e033d803 2018-04-23 stsp if (imsg.hdr.len < IMSG_HEADER_SIZE + min_datalen)
538 e033d803 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
540 e033d803 2018-04-23 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
542 e033d803 2018-04-23 stsp switch (imsg.hdr.type) {
543 e033d803 2018-04-23 stsp case GOT_IMSG_ERROR:
544 e033d803 2018-04-23 stsp err = recv_imsg_error(&imsg, datalen);
546 e033d803 2018-04-23 stsp case GOT_IMSG_TREE:
547 e033d803 2018-04-23 stsp /* This message should only appear once. */
548 e033d803 2018-04-23 stsp if (*tree != NULL) {
549 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
552 e033d803 2018-04-23 stsp if (datalen != sizeof(itree)) {
553 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
556 e033d803 2018-04-23 stsp memcpy(&itree, imsg.data, sizeof(itree));
557 e033d803 2018-04-23 stsp *tree = calloc(1, sizeof(**tree));
558 e033d803 2018-04-23 stsp if (*tree == NULL) {
559 e033d803 2018-04-23 stsp err = got_error_from_errno();
562 883f0469 2018-06-23 stsp (*tree)->entries.nentries = itree.nentries;
563 883f0469 2018-06-23 stsp SIMPLEQ_INIT(&(*tree)->entries.head);
565 e033d803 2018-04-23 stsp case GOT_IMSG_TREE_ENTRY:
566 e033d803 2018-04-23 stsp /* This message should be preceeded by GOT_IMSG_TREE. */
567 e033d803 2018-04-23 stsp if (*tree == NULL) {
568 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
571 e033d803 2018-04-23 stsp if (datalen < sizeof(ite) || datalen > MAX_IMSGSIZE) {
572 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
576 e033d803 2018-04-23 stsp /* Remaining data contains the entry's name. */
577 e033d803 2018-04-23 stsp datalen -= sizeof(ite);
578 e033d803 2018-04-23 stsp memcpy(&ite, imsg.data, sizeof(ite));
579 e033d803 2018-04-23 stsp if (datalen == 0 || datalen > MAX_IMSGSIZE) {
580 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
584 e033d803 2018-04-23 stsp te = got_alloc_tree_entry_partial();
585 e033d803 2018-04-23 stsp if (te == NULL) {
586 e033d803 2018-04-23 stsp err = got_error_from_errno();
589 e033d803 2018-04-23 stsp te->name = malloc(datalen + 1);
590 e033d803 2018-04-23 stsp if (te->name == NULL) {
592 e033d803 2018-04-23 stsp err = got_error_from_errno();
595 052d4dc3 2018-04-23 stsp memcpy(te->name, imsg.data + sizeof(ite), datalen);
596 e033d803 2018-04-23 stsp te->name[datalen] = '\0';
598 e033d803 2018-04-23 stsp memcpy(te->id->sha1, ite.id, SHA1_DIGEST_LENGTH);
599 e033d803 2018-04-23 stsp te->mode = ite.mode;
600 883f0469 2018-06-23 stsp SIMPLEQ_INSERT_TAIL(&(*tree)->entries.head, te, entry);
601 e033d803 2018-04-23 stsp nentries++;
604 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
608 e033d803 2018-04-23 stsp imsg_free(&imsg);
611 883f0469 2018-06-23 stsp if (*tree && (*tree)->entries.nentries != nentries) {
612 1e51f5b9 2018-04-23 stsp if (err == NULL)
613 1e51f5b9 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
614 e033d803 2018-04-23 stsp got_object_tree_close(*tree);
615 e033d803 2018-04-23 stsp *tree = NULL;
618 ff6b18f8 2018-04-24 stsp return err;
621 ff6b18f8 2018-04-24 stsp const struct got_error *
622 2967a784 2018-04-24 stsp got_privsep_send_blob(struct imsgbuf *ibuf, size_t size)
624 2967a784 2018-04-24 stsp struct got_imsg_blob iblob;
626 2967a784 2018-04-24 stsp iblob.size = size;
627 ff6b18f8 2018-04-24 stsp /* Data has already been written to file descriptor. */
629 2967a784 2018-04-24 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, &iblob, sizeof(iblob))
631 ff6b18f8 2018-04-24 stsp return got_error_from_errno();
633 ff6b18f8 2018-04-24 stsp return flush_imsg(ibuf);
636 ff6b18f8 2018-04-24 stsp const struct got_error *
637 2967a784 2018-04-24 stsp got_privsep_recv_blob(size_t *size, struct imsgbuf *ibuf)
639 ff6b18f8 2018-04-24 stsp const struct got_error *err = NULL;
640 ff6b18f8 2018-04-24 stsp struct imsg imsg;
641 2967a784 2018-04-24 stsp struct got_imsg_blob iblob;
642 ff6b18f8 2018-04-24 stsp size_t datalen;
644 ff6b18f8 2018-04-24 stsp err = recv_one_imsg(&imsg, ibuf, 0);
646 ff6b18f8 2018-04-24 stsp return err;
648 ff6b18f8 2018-04-24 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
650 ff6b18f8 2018-04-24 stsp switch (imsg.hdr.type) {
651 ff6b18f8 2018-04-24 stsp case GOT_IMSG_ERROR:
652 ff6b18f8 2018-04-24 stsp err = recv_imsg_error(&imsg, datalen);
654 ff6b18f8 2018-04-24 stsp case GOT_IMSG_BLOB:
655 2967a784 2018-04-24 stsp if (datalen != sizeof(iblob))
656 ff6b18f8 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
657 2967a784 2018-04-24 stsp memcpy(&iblob, imsg.data, sizeof(iblob));
658 2967a784 2018-04-24 stsp *size = iblob.size;
659 ff6b18f8 2018-04-24 stsp /* Data has been written to file descriptor. */
662 ff6b18f8 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
666 ff6b18f8 2018-04-24 stsp imsg_free(&imsg);
668 2178c42e 2018-04-22 stsp return err;