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 2178c42e 2018-04-22 stsp #include "got_lib_privsep.h"
42 2178c42e 2018-04-22 stsp #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
45 2178c42e 2018-04-22 stsp static const struct got_error *
46 2178c42e 2018-04-22 stsp poll_fd(int fd, int events, int timeout)
48 2178c42e 2018-04-22 stsp struct pollfd pfd[1];
51 2178c42e 2018-04-22 stsp pfd[0].fd = fd;
52 2178c42e 2018-04-22 stsp pfd[0].events = events;
54 2178c42e 2018-04-22 stsp n = poll(pfd, 1, timeout);
55 2178c42e 2018-04-22 stsp if (n == -1)
56 2178c42e 2018-04-22 stsp return got_error_from_errno();
58 2178c42e 2018-04-22 stsp return got_error(GOT_ERR_TIMEOUT);
59 2178c42e 2018-04-22 stsp if (pfd[0].revents & (POLLERR | POLLNVAL))
60 2178c42e 2018-04-22 stsp return got_error_from_errno();
61 2178c42e 2018-04-22 stsp if (pfd[0].revents & (events | POLLHUP))
62 2178c42e 2018-04-22 stsp return NULL;
64 2178c42e 2018-04-22 stsp return got_error(GOT_ERR_INTERRUPT);
67 c4eae628 2018-04-23 stsp static const struct got_error *
68 e033d803 2018-04-23 stsp read_imsg(struct imsgbuf *ibuf)
70 fe36cf76 2018-04-23 stsp const struct got_error *err;
73 fe36cf76 2018-04-23 stsp err = poll_fd(ibuf->fd, POLLIN, INFTIM);
77 fe36cf76 2018-04-23 stsp n = imsg_read(ibuf);
78 fe36cf76 2018-04-23 stsp if (n == -1) {
79 fe36cf76 2018-04-23 stsp if (errno == EAGAIN) /* Could be a file-descriptor leak. */
80 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_NO_FD);
81 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_READ);
84 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_PIPE);
86 e033d803 2018-04-23 stsp return NULL;
89 e033d803 2018-04-23 stsp static const struct got_error *
90 e033d803 2018-04-23 stsp recv_one_imsg(struct imsg *imsg, struct imsgbuf *ibuf, size_t min_datalen)
92 e033d803 2018-04-23 stsp const struct got_error *err;
95 e033d803 2018-04-23 stsp err = read_imsg(ibuf);
99 e033d803 2018-04-23 stsp n = imsg_get(ibuf, imsg);
100 e033d803 2018-04-23 stsp if (n == 0)
101 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_READ);
103 fe36cf76 2018-04-23 stsp if (imsg->hdr.len < IMSG_HEADER_SIZE + min_datalen)
104 fe36cf76 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
106 fe36cf76 2018-04-23 stsp return NULL;
109 fe36cf76 2018-04-23 stsp static const struct got_error *
110 c4eae628 2018-04-23 stsp recv_imsg_error(struct imsg *imsg, size_t datalen)
112 c4eae628 2018-04-23 stsp struct got_imsg_error ierr;
114 c4eae628 2018-04-23 stsp if (datalen != sizeof(ierr))
115 c4eae628 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
117 c4eae628 2018-04-23 stsp memcpy(&ierr, imsg->data, sizeof(ierr));
118 c4eae628 2018-04-23 stsp if (ierr.code == GOT_ERR_ERRNO) {
119 c4eae628 2018-04-23 stsp static struct got_error serr;
120 c4eae628 2018-04-23 stsp serr.code = GOT_ERR_ERRNO;
121 c4eae628 2018-04-23 stsp serr.msg = strerror(ierr.errno_code);
122 c4eae628 2018-04-23 stsp return &serr;
125 c4eae628 2018-04-23 stsp return got_error(ierr.code);
128 2178c42e 2018-04-22 stsp /* Attempt to send an error in an imsg. Complain on stderr as a last resort. */
130 2178c42e 2018-04-22 stsp got_privsep_send_error(struct imsgbuf *ibuf, const struct got_error *err)
132 2178c42e 2018-04-22 stsp const struct got_error *poll_err;
133 2178c42e 2018-04-22 stsp struct got_imsg_error ierr;
136 2178c42e 2018-04-22 stsp ierr.code = err->code;
137 2178c42e 2018-04-22 stsp if (err->code == GOT_ERR_ERRNO)
138 2178c42e 2018-04-22 stsp ierr.errno_code = errno;
140 2178c42e 2018-04-22 stsp ierr.errno_code = 0;
141 2178c42e 2018-04-22 stsp ret = imsg_compose(ibuf, GOT_IMSG_ERROR, 0, 0, -1, &ierr, sizeof(ierr));
142 2178c42e 2018-04-22 stsp if (ret != -1) {
143 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": imsg_compose: %s\n",
144 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, strerror(errno));
148 2178c42e 2018-04-22 stsp poll_err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
149 5d43e84d 2018-04-23 stsp if (poll_err) {
150 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": poll: %s\n",
151 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, poll_err->msg);
155 2178c42e 2018-04-22 stsp ret = imsg_flush(ibuf);
156 5d43e84d 2018-04-23 stsp if (ret == -1) {
157 2178c42e 2018-04-22 stsp fprintf(stderr, "%s: error %d \"%s\": imsg_flush: %s\n",
158 2178c42e 2018-04-22 stsp getprogname(), err->code, err->msg, strerror(errno));
163 e033d803 2018-04-23 stsp static const struct got_error *
164 e033d803 2018-04-23 stsp flush_imsg(struct imsgbuf *ibuf)
166 e033d803 2018-04-23 stsp const struct got_error *err;
168 e033d803 2018-04-23 stsp err = poll_fd(ibuf->fd, POLLOUT, INFTIM);
170 e033d803 2018-04-23 stsp return err;
172 e033d803 2018-04-23 stsp if (imsg_flush(ibuf) == -1)
173 e033d803 2018-04-23 stsp return got_error_from_errno();
175 e033d803 2018-04-23 stsp return NULL;
178 2178c42e 2018-04-22 stsp const struct got_error *
179 2178c42e 2018-04-22 stsp got_privsep_send_obj(struct imsgbuf *ibuf, struct got_object *obj, int ndeltas)
181 2178c42e 2018-04-22 stsp struct got_imsg_object iobj;
183 2178c42e 2018-04-22 stsp iobj.type = obj->type;
184 2178c42e 2018-04-22 stsp iobj.flags = obj->flags;
185 2178c42e 2018-04-22 stsp iobj.hdrlen = obj->hdrlen;
186 2178c42e 2018-04-22 stsp iobj.size = obj->size;
187 2178c42e 2018-04-22 stsp iobj.ndeltas = ndeltas;
189 2178c42e 2018-04-22 stsp if (ndeltas > 0) {
190 2178c42e 2018-04-22 stsp /* TODO: Handle deltas */
193 2178c42e 2018-04-22 stsp if (imsg_compose(ibuf, GOT_IMSG_OBJECT, 0, 0, -1, &iobj, sizeof(iobj))
195 2178c42e 2018-04-22 stsp return got_error_from_errno();
197 e033d803 2018-04-23 stsp return flush_imsg(ibuf);
200 2178c42e 2018-04-22 stsp const struct got_error *
201 2178c42e 2018-04-22 stsp got_privsep_recv_obj(struct got_object **obj, struct imsgbuf *ibuf)
203 2178c42e 2018-04-22 stsp const struct got_error *err = NULL;
204 2178c42e 2018-04-22 stsp struct imsg imsg;
205 2178c42e 2018-04-22 stsp struct got_imsg_object iobj;
206 2178c42e 2018-04-22 stsp size_t datalen;
208 c4eae628 2018-04-23 stsp const size_t min_datalen =
209 c4eae628 2018-04-23 stsp MIN(sizeof(struct got_imsg_error), sizeof(struct got_imsg_object));
211 2178c42e 2018-04-22 stsp *obj = NULL;
213 fe36cf76 2018-04-23 stsp err = recv_one_imsg(&imsg, ibuf, min_datalen);
215 2178c42e 2018-04-22 stsp return err;
217 2178c42e 2018-04-22 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
219 2178c42e 2018-04-22 stsp switch (imsg.hdr.type) {
220 2178c42e 2018-04-22 stsp case GOT_IMSG_ERROR:
221 c4eae628 2018-04-23 stsp err = recv_imsg_error(&imsg, datalen);
223 2178c42e 2018-04-22 stsp case GOT_IMSG_OBJECT:
224 2178c42e 2018-04-22 stsp if (datalen != sizeof(iobj)) {
225 2178c42e 2018-04-22 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
229 2178c42e 2018-04-22 stsp memcpy(&iobj, imsg.data, sizeof(iobj));
230 2178c42e 2018-04-22 stsp if (iobj.ndeltas < 0 ||
231 2178c42e 2018-04-22 stsp iobj.ndeltas > GOT_DELTA_CHAIN_RECURSION_MAX) {
232 2178c42e 2018-04-22 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
236 2178c42e 2018-04-22 stsp *obj = calloc(1, sizeof(**obj));
237 2178c42e 2018-04-22 stsp if (*obj == NULL) {
238 2178c42e 2018-04-22 stsp err = got_error_from_errno();
242 2178c42e 2018-04-22 stsp (*obj)->type = iobj.type;
243 2178c42e 2018-04-22 stsp (*obj)->hdrlen = iobj.hdrlen;
244 2178c42e 2018-04-22 stsp (*obj)->size = iobj.size;
245 2178c42e 2018-04-22 stsp for (i = 0; i < iobj.ndeltas; i++) {
246 2178c42e 2018-04-22 stsp /* TODO: Handle deltas */
250 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
254 bff6ca00 2018-04-23 stsp imsg_free(&imsg);
256 bff6ca00 2018-04-23 stsp return err;
259 bff6ca00 2018-04-23 stsp const struct got_error *
260 068fd2bf 2018-04-24 stsp got_privsep_send_commit(struct imsgbuf *ibuf, struct got_commit_object *commit)
262 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
263 bff6ca00 2018-04-23 stsp struct got_imsg_commit_object icommit;
264 bff6ca00 2018-04-23 stsp uint8_t *buf;
265 bff6ca00 2018-04-23 stsp size_t len, total;
266 79f35eb3 2018-06-11 stsp struct got_object_qid *qid;
268 86acc566 2018-04-23 stsp memcpy(icommit.tree_id, commit->tree_id->sha1, sizeof(icommit.tree_id));
269 bff6ca00 2018-04-23 stsp icommit.author_len = strlen(commit->author);
270 788c352e 2018-06-16 stsp memcpy(&icommit.tm_author, &commit->tm_author,
271 788c352e 2018-06-16 stsp sizeof(icommit.tm_author));
272 bff6ca00 2018-04-23 stsp icommit.committer_len = strlen(commit->committer);
273 788c352e 2018-06-16 stsp memcpy(&icommit.tm_committer, &commit->tm_committer,
274 788c352e 2018-06-16 stsp sizeof(icommit.tm_committer));
275 bff6ca00 2018-04-23 stsp icommit.logmsg_len = strlen(commit->logmsg);
276 bff6ca00 2018-04-23 stsp icommit.nparents = commit->nparents;
278 bff6ca00 2018-04-23 stsp total = sizeof(icommit) + icommit.author_len +
279 788c352e 2018-06-16 stsp icommit.committer_len + icommit.logmsg_len +
280 86acc566 2018-04-23 stsp icommit.nparents * SHA1_DIGEST_LENGTH;
281 bff6ca00 2018-04-23 stsp /* XXX TODO support very large log messages properly */
282 bff6ca00 2018-04-23 stsp if (total > MAX_IMSGSIZE)
283 bff6ca00 2018-04-23 stsp return got_error(GOT_ERR_NO_SPACE);
285 bff6ca00 2018-04-23 stsp buf = malloc(total);
286 bff6ca00 2018-04-23 stsp if (buf == NULL)
287 bff6ca00 2018-04-23 stsp return got_error_from_errno();
290 bff6ca00 2018-04-23 stsp memcpy(buf + len, &icommit, sizeof(icommit));
291 bff6ca00 2018-04-23 stsp len += sizeof(icommit);
292 bff6ca00 2018-04-23 stsp memcpy(buf + len, commit->author, icommit.author_len);
293 bff6ca00 2018-04-23 stsp len += icommit.author_len;
294 bff6ca00 2018-04-23 stsp memcpy(buf + len, commit->committer, icommit.committer_len);
295 bff6ca00 2018-04-23 stsp len += icommit.committer_len;
296 bff6ca00 2018-04-23 stsp memcpy(buf + len, commit->logmsg, icommit.logmsg_len);
297 bff6ca00 2018-04-23 stsp len += icommit.logmsg_len;
298 79f35eb3 2018-06-11 stsp SIMPLEQ_FOREACH(qid, &commit->parent_ids, entry) {
299 79f35eb3 2018-06-11 stsp memcpy(buf + len, qid->id, SHA1_DIGEST_LENGTH);
300 86acc566 2018-04-23 stsp len += SHA1_DIGEST_LENGTH;
303 bff6ca00 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_COMMIT, 0, 0, -1, buf, len) == -1) {
304 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
308 e033d803 2018-04-23 stsp err = flush_imsg(ibuf);
311 bff6ca00 2018-04-23 stsp return err;
313 bff6ca00 2018-04-23 stsp const struct got_error *
314 068fd2bf 2018-04-24 stsp got_privsep_recv_commit(struct got_commit_object **commit, struct imsgbuf *ibuf)
316 bff6ca00 2018-04-23 stsp const struct got_error *err = NULL;
317 bff6ca00 2018-04-23 stsp struct imsg imsg;
318 bff6ca00 2018-04-23 stsp struct got_imsg_commit_object icommit;
319 bff6ca00 2018-04-23 stsp size_t len, datalen;
321 bff6ca00 2018-04-23 stsp const size_t min_datalen =
322 bff6ca00 2018-04-23 stsp MIN(sizeof(struct got_imsg_error),
323 bff6ca00 2018-04-23 stsp sizeof(struct got_imsg_commit_object));
324 bff6ca00 2018-04-23 stsp uint8_t *data;
326 bff6ca00 2018-04-23 stsp *commit = NULL;
328 bff6ca00 2018-04-23 stsp err = recv_one_imsg(&imsg, ibuf, min_datalen);
330 bff6ca00 2018-04-23 stsp return err;
332 bff6ca00 2018-04-23 stsp data = imsg.data;
333 bff6ca00 2018-04-23 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
336 bff6ca00 2018-04-23 stsp switch (imsg.hdr.type) {
337 bff6ca00 2018-04-23 stsp case GOT_IMSG_ERROR:
338 bff6ca00 2018-04-23 stsp err = recv_imsg_error(&imsg, datalen);
340 bff6ca00 2018-04-23 stsp case GOT_IMSG_COMMIT:
341 bff6ca00 2018-04-23 stsp if (datalen < sizeof(icommit)) {
342 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
346 bff6ca00 2018-04-23 stsp memcpy(&icommit, data, sizeof(icommit));
347 bff6ca00 2018-04-23 stsp if (datalen != sizeof(icommit) + icommit.author_len +
348 788c352e 2018-06-16 stsp icommit.committer_len + icommit.logmsg_len +
349 86acc566 2018-04-23 stsp icommit.nparents * SHA1_DIGEST_LENGTH) {
350 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
353 bff6ca00 2018-04-23 stsp if (icommit.nparents < 0) {
354 bff6ca00 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
357 bff6ca00 2018-04-23 stsp len += sizeof(icommit);
359 bff6ca00 2018-04-23 stsp *commit = got_object_commit_alloc_partial();
360 bff6ca00 2018-04-23 stsp if (*commit == NULL) {
361 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
365 86acc566 2018-04-23 stsp memcpy((*commit)->tree_id->sha1, icommit.tree_id,
366 86acc566 2018-04-23 stsp SHA1_DIGEST_LENGTH);
367 788c352e 2018-06-16 stsp memcpy(&(*commit)->tm_author, &icommit.tm_author,
368 788c352e 2018-06-16 stsp sizeof((*commit)->tm_author));
369 788c352e 2018-06-16 stsp memcpy(&(*commit)->tm_committer, &icommit.tm_committer,
370 788c352e 2018-06-16 stsp sizeof((*commit)->tm_committer));
372 bff6ca00 2018-04-23 stsp if (icommit.author_len == 0) {
373 bff6ca00 2018-04-23 stsp (*commit)->author = strdup("");
374 bff6ca00 2018-04-23 stsp if ((*commit)->author == NULL) {
375 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
379 bff6ca00 2018-04-23 stsp (*commit)->author = malloc(icommit.author_len + 1);
380 bff6ca00 2018-04-23 stsp if ((*commit)->author == NULL) {
381 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
384 bff6ca00 2018-04-23 stsp memcpy((*commit)->author, data + len,
385 bff6ca00 2018-04-23 stsp icommit.author_len);
386 bff6ca00 2018-04-23 stsp (*commit)->author[icommit.author_len] = '\0';
388 bff6ca00 2018-04-23 stsp len += icommit.author_len;
390 bff6ca00 2018-04-23 stsp if (icommit.committer_len == 0) {
391 bff6ca00 2018-04-23 stsp (*commit)->committer = strdup("");
392 bff6ca00 2018-04-23 stsp if ((*commit)->committer == NULL) {
393 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
397 bff6ca00 2018-04-23 stsp (*commit)->committer =
398 bff6ca00 2018-04-23 stsp malloc(icommit.committer_len + 1);
399 bff6ca00 2018-04-23 stsp if ((*commit)->committer == NULL) {
400 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
403 bff6ca00 2018-04-23 stsp memcpy((*commit)->committer, data + len,
404 bff6ca00 2018-04-23 stsp icommit.committer_len);
405 bff6ca00 2018-04-23 stsp (*commit)->committer[icommit.committer_len] = '\0';
407 bff6ca00 2018-04-23 stsp len += icommit.committer_len;
409 bff6ca00 2018-04-23 stsp if (icommit.logmsg_len == 0) {
410 bff6ca00 2018-04-23 stsp (*commit)->logmsg = strdup("");
411 bff6ca00 2018-04-23 stsp if ((*commit)->logmsg == NULL) {
412 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
416 bff6ca00 2018-04-23 stsp (*commit)->logmsg = malloc(icommit.logmsg_len + 1);
417 bff6ca00 2018-04-23 stsp if ((*commit)->logmsg == NULL) {
418 bff6ca00 2018-04-23 stsp err = got_error_from_errno();
421 bff6ca00 2018-04-23 stsp memcpy((*commit)->logmsg, data + len,
422 bff6ca00 2018-04-23 stsp icommit.logmsg_len);
423 bff6ca00 2018-04-23 stsp (*commit)->logmsg[icommit.logmsg_len] = '\0';
425 bff6ca00 2018-04-23 stsp len += icommit.logmsg_len;
427 bff6ca00 2018-04-23 stsp for (i = 0; i < icommit.nparents; i++) {
428 79f35eb3 2018-06-11 stsp struct got_object_qid *qid;
430 79f35eb3 2018-06-11 stsp qid = calloc(1, sizeof(*qid));
431 79f35eb3 2018-06-11 stsp if (qid == NULL) {
432 86acc566 2018-04-23 stsp err = got_error_from_errno();
435 79f35eb3 2018-06-11 stsp qid->id = calloc(1, sizeof(*qid->id));
436 79f35eb3 2018-06-11 stsp if (qid->id == NULL) {
437 86acc566 2018-04-23 stsp err = got_error_from_errno();
442 79f35eb3 2018-06-11 stsp memcpy(qid->id, data + len + i * SHA1_DIGEST_LENGTH,
443 79f35eb3 2018-06-11 stsp sizeof(*qid->id));
444 79f35eb3 2018-06-11 stsp SIMPLEQ_INSERT_TAIL(&(*commit)->parent_ids, qid, entry);
445 86acc566 2018-04-23 stsp (*commit)->nparents++;
449 8c580685 2018-04-22 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
453 2178c42e 2018-04-22 stsp imsg_free(&imsg);
455 e033d803 2018-04-23 stsp return err;
458 e033d803 2018-04-23 stsp const struct got_error *
459 068fd2bf 2018-04-24 stsp got_privsep_send_tree(struct imsgbuf *ibuf, struct got_tree_object *tree)
461 e033d803 2018-04-23 stsp const struct got_error *err = NULL;
462 e033d803 2018-04-23 stsp struct got_imsg_tree_object itree;
463 e033d803 2018-04-23 stsp struct got_tree_entry *te;
465 883f0469 2018-06-23 stsp itree.nentries = tree->entries.nentries;
466 e033d803 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE, 0, 0, -1, &itree, sizeof(itree))
468 e033d803 2018-04-23 stsp return got_error_from_errno();
470 e033d803 2018-04-23 stsp err = flush_imsg(ibuf);
472 e033d803 2018-04-23 stsp return err;
474 883f0469 2018-06-23 stsp SIMPLEQ_FOREACH(te, &tree->entries.head, entry) {
475 e033d803 2018-04-23 stsp struct got_imsg_tree_entry ite;
476 e033d803 2018-04-23 stsp uint8_t *buf = NULL;
477 e033d803 2018-04-23 stsp size_t len = sizeof(ite) + strlen(te->name);
479 e033d803 2018-04-23 stsp if (len > MAX_IMSGSIZE)
480 e033d803 2018-04-23 stsp return got_error(GOT_ERR_NO_SPACE);
482 e033d803 2018-04-23 stsp buf = malloc(len);
483 e033d803 2018-04-23 stsp if (buf == NULL)
484 e033d803 2018-04-23 stsp return got_error_from_errno();
486 e033d803 2018-04-23 stsp memcpy(ite.id, te->id->sha1, sizeof(ite.id));
487 e033d803 2018-04-23 stsp ite.mode = te->mode;
488 e033d803 2018-04-23 stsp memcpy(buf, &ite, sizeof(ite));
489 e033d803 2018-04-23 stsp memcpy(buf + sizeof(ite), te->name, strlen(te->name));
491 e033d803 2018-04-23 stsp if (imsg_compose(ibuf, GOT_IMSG_TREE_ENTRY, 0, 0, -1,
492 e033d803 2018-04-23 stsp buf, len) == -1)
493 e033d803 2018-04-23 stsp err = got_error_from_errno();
496 e033d803 2018-04-23 stsp return err;
498 e033d803 2018-04-23 stsp err = flush_imsg(ibuf);
500 e033d803 2018-04-23 stsp return err;
503 e033d803 2018-04-23 stsp return NULL;
506 e033d803 2018-04-23 stsp const struct got_error *
507 068fd2bf 2018-04-24 stsp got_privsep_recv_tree(struct got_tree_object **tree, struct imsgbuf *ibuf)
509 e033d803 2018-04-23 stsp const struct got_error *err = NULL;
510 e033d803 2018-04-23 stsp const size_t min_datalen =
511 e033d803 2018-04-23 stsp MIN(sizeof(struct got_imsg_error),
512 e033d803 2018-04-23 stsp sizeof(struct got_imsg_tree_object));
513 e033d803 2018-04-23 stsp struct got_imsg_tree_object itree = { 0 };
514 e033d803 2018-04-23 stsp int nentries = 0;
516 e033d803 2018-04-23 stsp *tree = NULL;
518 e033d803 2018-04-23 stsp err = read_imsg(ibuf);
522 e033d803 2018-04-23 stsp while (1) {
523 e033d803 2018-04-23 stsp struct imsg imsg;
525 e033d803 2018-04-23 stsp size_t datalen;
526 e033d803 2018-04-23 stsp struct got_imsg_tree_entry ite;
527 e033d803 2018-04-23 stsp struct got_tree_entry *te = NULL;
529 e033d803 2018-04-23 stsp n = imsg_get(ibuf, &imsg);
530 e033d803 2018-04-23 stsp if (n == 0) {
531 883f0469 2018-06-23 stsp if (*tree && (*tree)->entries.nentries != nentries)
532 e033d803 2018-04-23 stsp goto get_more;
536 e033d803 2018-04-23 stsp if (imsg.hdr.len < IMSG_HEADER_SIZE + min_datalen)
537 e033d803 2018-04-23 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
539 e033d803 2018-04-23 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
541 e033d803 2018-04-23 stsp switch (imsg.hdr.type) {
542 e033d803 2018-04-23 stsp case GOT_IMSG_ERROR:
543 e033d803 2018-04-23 stsp err = recv_imsg_error(&imsg, datalen);
545 e033d803 2018-04-23 stsp case GOT_IMSG_TREE:
546 e033d803 2018-04-23 stsp /* This message should only appear once. */
547 e033d803 2018-04-23 stsp if (*tree != NULL) {
548 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
551 e033d803 2018-04-23 stsp if (datalen != sizeof(itree)) {
552 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
555 e033d803 2018-04-23 stsp memcpy(&itree, imsg.data, sizeof(itree));
556 e033d803 2018-04-23 stsp *tree = calloc(1, sizeof(**tree));
557 e033d803 2018-04-23 stsp if (*tree == NULL) {
558 e033d803 2018-04-23 stsp err = got_error_from_errno();
561 883f0469 2018-06-23 stsp (*tree)->entries.nentries = itree.nentries;
562 883f0469 2018-06-23 stsp SIMPLEQ_INIT(&(*tree)->entries.head);
564 e033d803 2018-04-23 stsp case GOT_IMSG_TREE_ENTRY:
565 e033d803 2018-04-23 stsp /* This message should be preceeded by GOT_IMSG_TREE. */
566 e033d803 2018-04-23 stsp if (*tree == NULL) {
567 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
570 e033d803 2018-04-23 stsp if (datalen < sizeof(ite) || datalen > MAX_IMSGSIZE) {
571 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
575 e033d803 2018-04-23 stsp /* Remaining data contains the entry's name. */
576 e033d803 2018-04-23 stsp datalen -= sizeof(ite);
577 e033d803 2018-04-23 stsp memcpy(&ite, imsg.data, sizeof(ite));
578 e033d803 2018-04-23 stsp if (datalen == 0 || datalen > MAX_IMSGSIZE) {
579 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
583 e033d803 2018-04-23 stsp te = got_alloc_tree_entry_partial();
584 e033d803 2018-04-23 stsp if (te == NULL) {
585 e033d803 2018-04-23 stsp err = got_error_from_errno();
588 e033d803 2018-04-23 stsp te->name = malloc(datalen + 1);
589 e033d803 2018-04-23 stsp if (te->name == NULL) {
591 e033d803 2018-04-23 stsp err = got_error_from_errno();
594 052d4dc3 2018-04-23 stsp memcpy(te->name, imsg.data + sizeof(ite), datalen);
595 e033d803 2018-04-23 stsp te->name[datalen] = '\0';
597 e033d803 2018-04-23 stsp memcpy(te->id->sha1, ite.id, SHA1_DIGEST_LENGTH);
598 e033d803 2018-04-23 stsp te->mode = ite.mode;
599 883f0469 2018-06-23 stsp SIMPLEQ_INSERT_TAIL(&(*tree)->entries.head, te, entry);
600 e033d803 2018-04-23 stsp nentries++;
603 e033d803 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
607 e033d803 2018-04-23 stsp imsg_free(&imsg);
610 883f0469 2018-06-23 stsp if (*tree && (*tree)->entries.nentries != nentries) {
611 1e51f5b9 2018-04-23 stsp if (err == NULL)
612 1e51f5b9 2018-04-23 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
613 e033d803 2018-04-23 stsp got_object_tree_close(*tree);
614 e033d803 2018-04-23 stsp *tree = NULL;
617 ff6b18f8 2018-04-24 stsp return err;
620 ff6b18f8 2018-04-24 stsp const struct got_error *
621 2967a784 2018-04-24 stsp got_privsep_send_blob(struct imsgbuf *ibuf, size_t size)
623 2967a784 2018-04-24 stsp struct got_imsg_blob iblob;
625 2967a784 2018-04-24 stsp iblob.size = size;
626 ff6b18f8 2018-04-24 stsp /* Data has already been written to file descriptor. */
628 2967a784 2018-04-24 stsp if (imsg_compose(ibuf, GOT_IMSG_BLOB, 0, 0, -1, &iblob, sizeof(iblob))
630 ff6b18f8 2018-04-24 stsp return got_error_from_errno();
632 ff6b18f8 2018-04-24 stsp return flush_imsg(ibuf);
635 ff6b18f8 2018-04-24 stsp const struct got_error *
636 2967a784 2018-04-24 stsp got_privsep_recv_blob(size_t *size, struct imsgbuf *ibuf)
638 ff6b18f8 2018-04-24 stsp const struct got_error *err = NULL;
639 ff6b18f8 2018-04-24 stsp struct imsg imsg;
640 2967a784 2018-04-24 stsp struct got_imsg_blob iblob;
641 ff6b18f8 2018-04-24 stsp size_t datalen;
643 ff6b18f8 2018-04-24 stsp err = recv_one_imsg(&imsg, ibuf, 0);
645 ff6b18f8 2018-04-24 stsp return err;
647 ff6b18f8 2018-04-24 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
649 ff6b18f8 2018-04-24 stsp switch (imsg.hdr.type) {
650 ff6b18f8 2018-04-24 stsp case GOT_IMSG_ERROR:
651 ff6b18f8 2018-04-24 stsp err = recv_imsg_error(&imsg, datalen);
653 ff6b18f8 2018-04-24 stsp case GOT_IMSG_BLOB:
654 2967a784 2018-04-24 stsp if (datalen != sizeof(iblob))
655 ff6b18f8 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
656 2967a784 2018-04-24 stsp memcpy(&iblob, imsg.data, sizeof(iblob));
657 2967a784 2018-04-24 stsp *size = iblob.size;
658 ff6b18f8 2018-04-24 stsp /* Data has been written to file descriptor. */
661 ff6b18f8 2018-04-24 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
665 ff6b18f8 2018-04-24 stsp imsg_free(&imsg);
667 2178c42e 2018-04-22 stsp return err;