2 f8a36e22 2021-08-26 stsp * Copyright (c) 2019 Ori Bernstein <ori@openbsd.org>
3 f8a36e22 2021-08-26 stsp * Copyright (c) 2021 Stefan Sperling <stsp@openbsd.org>
5 f8a36e22 2021-08-26 stsp * Permission to use, copy, modify, and distribute this software for any
6 f8a36e22 2021-08-26 stsp * purpose with or without fee is hereby granted, provided that the above
7 f8a36e22 2021-08-26 stsp * copyright notice and this permission notice appear in all copies.
9 f8a36e22 2021-08-26 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 f8a36e22 2021-08-26 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 f8a36e22 2021-08-26 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 f8a36e22 2021-08-26 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 f8a36e22 2021-08-26 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 f8a36e22 2021-08-26 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 f8a36e22 2021-08-26 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 f8a36e22 2021-08-26 stsp #include <sys/types.h>
19 f8a36e22 2021-08-26 stsp #include <sys/queue.h>
20 f8a36e22 2021-08-26 stsp #include <sys/uio.h>
21 f8a36e22 2021-08-26 stsp #include <sys/time.h>
22 f8a36e22 2021-08-26 stsp #include <sys/stat.h>
24 f8a36e22 2021-08-26 stsp #include <stdint.h>
25 f8a36e22 2021-08-26 stsp #include <errno.h>
26 f8a36e22 2021-08-26 stsp #include <imsg.h>
27 f8a36e22 2021-08-26 stsp #include <limits.h>
28 f8a36e22 2021-08-26 stsp #include <signal.h>
29 f8a36e22 2021-08-26 stsp #include <stdio.h>
30 f8a36e22 2021-08-26 stsp #include <stdlib.h>
31 f8a36e22 2021-08-26 stsp #include <string.h>
32 f8a36e22 2021-08-26 stsp #include <ctype.h>
33 f8a36e22 2021-08-26 stsp #include <sha1.h>
34 5822e79e 2023-02-23 op #include <sha2.h>
35 f8a36e22 2021-08-26 stsp #include <fcntl.h>
36 f8a36e22 2021-08-26 stsp #include <unistd.h>
37 f8a36e22 2021-08-26 stsp #include <zlib.h>
38 f8a36e22 2021-08-26 stsp #include <err.h>
40 f8a36e22 2021-08-26 stsp #include "got_error.h"
41 f8a36e22 2021-08-26 stsp #include "got_object.h"
42 f8a36e22 2021-08-26 stsp #include "got_path.h"
43 f8a36e22 2021-08-26 stsp #include "got_version.h"
44 f8a36e22 2021-08-26 stsp #include "got_fetch.h"
45 f8a36e22 2021-08-26 stsp #include "got_reference.h"
47 53bf0b54 2023-02-23 op #include "got_lib_hash.h"
48 f8a36e22 2021-08-26 stsp #include "got_lib_delta.h"
49 f8a36e22 2021-08-26 stsp #include "got_lib_object.h"
50 f8a36e22 2021-08-26 stsp #include "got_lib_object_parse.h"
51 f8a36e22 2021-08-26 stsp #include "got_lib_privsep.h"
52 f8a36e22 2021-08-26 stsp #include "got_lib_pack.h"
53 f024663d 2021-09-05 stsp #include "got_lib_pkt.h"
54 bd3d9e54 2021-09-05 stsp #include "got_lib_gitproto.h"
55 bed00385 2022-02-23 stsp #include "got_lib_ratelimit.h"
56 15f404b1 2022-10-31 stsp #include "got_lib_poll.h"
58 f8a36e22 2021-08-26 stsp #ifndef nitems
59 f8a36e22 2021-08-26 stsp #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
62 f8a36e22 2021-08-26 stsp struct got_object *indexed;
63 f8a36e22 2021-08-26 stsp static int chattygot;
65 f8a36e22 2021-08-26 stsp static const struct got_capability got_capabilities[] = {
66 f8a36e22 2021-08-26 stsp { GOT_CAPA_AGENT, "got/" GOT_VERSION_STR },
67 f8a36e22 2021-08-26 stsp { GOT_CAPA_OFS_DELTA, NULL },
69 f8a36e22 2021-08-26 stsp { GOT_CAPA_SIDE_BAND_64K, NULL },
71 f8a36e22 2021-08-26 stsp { GOT_CAPA_REPORT_STATUS, NULL },
72 f8a36e22 2021-08-26 stsp { GOT_CAPA_DELETE_REFS, NULL },
75 f8a36e22 2021-08-26 stsp static const struct got_error *
76 bed00385 2022-02-23 stsp send_upload_progress(struct imsgbuf *ibuf, off_t bytes,
77 bed00385 2022-02-23 stsp struct got_ratelimit *rl)
79 bed00385 2022-02-23 stsp const struct got_error *err = NULL;
80 bed00385 2022-02-23 stsp int elapsed = 0;
83 bed00385 2022-02-23 stsp err = got_ratelimit_check(&elapsed, rl);
84 bed00385 2022-02-23 stsp if (err || !elapsed)
88 f8a36e22 2021-08-26 stsp if (imsg_compose(ibuf, GOT_IMSG_SEND_UPLOAD_PROGRESS, 0, 0, -1,
89 f8a36e22 2021-08-26 stsp &bytes, sizeof(bytes)) == -1)
90 f8a36e22 2021-08-26 stsp return got_error_from_errno(
91 f8a36e22 2021-08-26 stsp "imsg_compose SEND_UPLOAD_PROGRESS");
93 f8a36e22 2021-08-26 stsp return got_privsep_flush_imsg(ibuf);
96 f8a36e22 2021-08-26 stsp static const struct got_error *
97 f8a36e22 2021-08-26 stsp send_pack_request(struct imsgbuf *ibuf)
99 f8a36e22 2021-08-26 stsp if (imsg_compose(ibuf, GOT_IMSG_SEND_PACK_REQUEST, 0, 0, -1,
100 f8a36e22 2021-08-26 stsp NULL, 0) == -1)
101 f8a36e22 2021-08-26 stsp return got_error_from_errno("imsg_compose SEND_PACK_REQUEST");
102 f8a36e22 2021-08-26 stsp return got_privsep_flush_imsg(ibuf);
105 f8a36e22 2021-08-26 stsp static const struct got_error *
106 f8a36e22 2021-08-26 stsp send_done(struct imsgbuf *ibuf)
108 f8a36e22 2021-08-26 stsp if (imsg_compose(ibuf, GOT_IMSG_SEND_DONE, 0, 0, -1, NULL, 0) == -1)
109 f8a36e22 2021-08-26 stsp return got_error_from_errno("imsg_compose SEND_DONE");
110 f8a36e22 2021-08-26 stsp return got_privsep_flush_imsg(ibuf);
113 f8a36e22 2021-08-26 stsp static const struct got_error *
114 f8a36e22 2021-08-26 stsp recv_packfd(int *packfd, struct imsgbuf *ibuf)
116 f8a36e22 2021-08-26 stsp const struct got_error *err;
117 f8a36e22 2021-08-26 stsp struct imsg imsg;
119 f8a36e22 2021-08-26 stsp *packfd = -1;
121 f8a36e22 2021-08-26 stsp err = got_privsep_recv_imsg(&imsg, ibuf, 0);
123 f8a36e22 2021-08-26 stsp return err;
125 f8a36e22 2021-08-26 stsp if (imsg.hdr.type == GOT_IMSG_STOP) {
126 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_CANCELLED);
130 f8a36e22 2021-08-26 stsp if (imsg.hdr.type != GOT_IMSG_SEND_PACKFD) {
131 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
135 f8a36e22 2021-08-26 stsp if (imsg.hdr.len - IMSG_HEADER_SIZE != 0) {
136 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
140 f8a36e22 2021-08-26 stsp *packfd = imsg.fd;
142 f8a36e22 2021-08-26 stsp imsg_free(&imsg);
143 f8a36e22 2021-08-26 stsp return err;
146 f8a36e22 2021-08-26 stsp static const struct got_error *
147 f8a36e22 2021-08-26 stsp send_pack_file(int sendfd, int packfd, struct imsgbuf *ibuf)
149 f8a36e22 2021-08-26 stsp const struct got_error *err;
150 f8a36e22 2021-08-26 stsp unsigned char buf[8192];
152 f8a36e22 2021-08-26 stsp off_t wtotal = 0;
153 bed00385 2022-02-23 stsp struct got_ratelimit rl;
155 f8a36e22 2021-08-26 stsp if (lseek(packfd, 0L, SEEK_SET) == -1)
156 f8a36e22 2021-08-26 stsp return got_error_from_errno("lseek");
158 bed00385 2022-02-23 stsp got_ratelimit_init(&rl, 0, 500);
161 f8a36e22 2021-08-26 stsp r = read(packfd, buf, sizeof(buf));
162 f8a36e22 2021-08-26 stsp if (r == -1)
163 f8a36e22 2021-08-26 stsp return got_error_from_errno("read");
164 f8a36e22 2021-08-26 stsp if (r == 0)
166 15f404b1 2022-10-31 stsp err = got_poll_write_full(sendfd, buf, r);
168 15f404b1 2022-10-31 stsp return NULL;
169 15f404b1 2022-10-31 stsp wtotal += r;
170 bed00385 2022-02-23 stsp err = send_upload_progress(ibuf, wtotal, &rl);
172 f8a36e22 2021-08-26 stsp return err;
175 bed00385 2022-02-23 stsp return send_upload_progress(ibuf, wtotal, NULL);
178 f8a36e22 2021-08-26 stsp static const struct got_error *
179 f8a36e22 2021-08-26 stsp send_error(const char *buf, size_t len)
181 f8a36e22 2021-08-26 stsp static char msg[1024];
184 f8a36e22 2021-08-26 stsp for (i = 0; i < len && i < sizeof(msg) - 1; i++) {
185 99fd9ff4 2022-11-17 op if (!isprint((unsigned char)buf[i]))
186 f8a36e22 2021-08-26 stsp return got_error_msg(GOT_ERR_BAD_PACKET,
187 f8a36e22 2021-08-26 stsp "non-printable error message received from server");
188 f8a36e22 2021-08-26 stsp msg[i] = buf[i];
190 f8a36e22 2021-08-26 stsp msg[i] = '\0';
191 f8a36e22 2021-08-26 stsp return got_error_msg(GOT_ERR_SEND_FAILED, msg);
194 f8a36e22 2021-08-26 stsp static const struct got_error *
195 f8a36e22 2021-08-26 stsp send_their_ref(struct imsgbuf *ibuf, struct got_object_id *refid,
196 f8a36e22 2021-08-26 stsp const char *refname)
198 f8a36e22 2021-08-26 stsp struct ibuf *wbuf;
199 f8a36e22 2021-08-26 stsp size_t len, reflen = strlen(refname);
201 f8a36e22 2021-08-26 stsp len = sizeof(struct got_imsg_send_remote_ref) + reflen;
202 f8a36e22 2021-08-26 stsp if (len >= MAX_IMSGSIZE - IMSG_HEADER_SIZE)
203 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
205 f8a36e22 2021-08-26 stsp wbuf = imsg_create(ibuf, GOT_IMSG_SEND_REMOTE_REF, 0, 0, len);
206 f8a36e22 2021-08-26 stsp if (wbuf == NULL)
207 f8a36e22 2021-08-26 stsp return got_error_from_errno("imsg_create SEND_REMOTE_REF");
209 f8a36e22 2021-08-26 stsp /* Keep in sync with struct got_imsg_send_remote_ref definition! */
210 427f294c 2023-02-01 op if (imsg_add(wbuf, refid, sizeof(*refid)) == -1)
211 1453347d 2022-05-19 stsp return got_error_from_errno("imsg_add SEND_REMOTE_REF");
212 1453347d 2022-05-19 stsp if (imsg_add(wbuf, &reflen, sizeof(reflen)) == -1)
213 1453347d 2022-05-19 stsp return got_error_from_errno("imsg_add SEND_REMOTE_REF");
214 1453347d 2022-05-19 stsp if (imsg_add(wbuf, refname, reflen) == -1)
215 1453347d 2022-05-19 stsp return got_error_from_errno("imsg_add SEND_REMOTE_REF");
217 f8a36e22 2021-08-26 stsp wbuf->fd = -1;
218 f8a36e22 2021-08-26 stsp imsg_close(ibuf, wbuf);
219 f8a36e22 2021-08-26 stsp return got_privsep_flush_imsg(ibuf);
222 f8a36e22 2021-08-26 stsp static const struct got_error *
223 f8a36e22 2021-08-26 stsp send_ref_status(struct imsgbuf *ibuf, const char *refname, int success,
224 f8a36e22 2021-08-26 stsp struct got_pathlist_head *refs, struct got_pathlist_head *delete_refs)
226 f8a36e22 2021-08-26 stsp struct ibuf *wbuf;
227 6242c45b 2022-11-14 op size_t i, len, reflen, errmsglen = 0;
228 f8a36e22 2021-08-26 stsp struct got_pathlist_entry *pe;
229 f8a36e22 2021-08-26 stsp int ref_valid = 0;
230 6242c45b 2022-11-14 op char *eol, *sp;
231 6242c45b 2022-11-14 op const char *errmsg = "";
233 f8a36e22 2021-08-26 stsp eol = strchr(refname, '\n');
234 f8a36e22 2021-08-26 stsp if (eol == NULL) {
235 f8a36e22 2021-08-26 stsp return got_error_msg(GOT_ERR_BAD_PACKET,
236 f8a36e22 2021-08-26 stsp "unexpected message from server");
238 f8a36e22 2021-08-26 stsp *eol = '\0';
240 6242c45b 2022-11-14 op sp = strchr(refname, ' ');
241 6242c45b 2022-11-14 op if (sp != NULL) {
242 6242c45b 2022-11-14 op *sp++ = '\0';
244 6242c45b 2022-11-14 op errmsglen = strlen(errmsg);
246 6242c45b 2022-11-14 op for (i = 0; i < errmsglen; ++i) {
247 6242c45b 2022-11-14 op if (!isprint((unsigned char)errmsg[i])) {
248 6242c45b 2022-11-14 op return got_error_msg(GOT_ERR_BAD_PACKET,
249 6242c45b 2022-11-14 op "non-printable error message received "
250 6242c45b 2022-11-14 op "from the server");
255 6242c45b 2022-11-14 op reflen = strlen(refname);
256 6242c45b 2022-11-14 op if (!got_ref_name_is_valid(refname)) {
257 6242c45b 2022-11-14 op return got_error_msg(GOT_ERR_BAD_PACKET,
258 6242c45b 2022-11-14 op "unexpected message from server");
261 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(pe, refs, entry) {
262 f8a36e22 2021-08-26 stsp if (strcmp(refname, pe->path) == 0) {
263 f8a36e22 2021-08-26 stsp ref_valid = 1;
267 f8a36e22 2021-08-26 stsp if (!ref_valid) {
268 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(pe, delete_refs, entry) {
269 f8a36e22 2021-08-26 stsp if (strcmp(refname, pe->path) == 0) {
270 f8a36e22 2021-08-26 stsp ref_valid = 1;
275 f8a36e22 2021-08-26 stsp if (!ref_valid) {
276 f8a36e22 2021-08-26 stsp return got_error_msg(GOT_ERR_BAD_PACKET,
277 f8a36e22 2021-08-26 stsp "unexpected message from server");
280 6242c45b 2022-11-14 op len = sizeof(struct got_imsg_send_ref_status) + reflen + errmsglen;
281 f8a36e22 2021-08-26 stsp if (len >= MAX_IMSGSIZE - IMSG_HEADER_SIZE)
282 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
284 f8a36e22 2021-08-26 stsp wbuf = imsg_create(ibuf, GOT_IMSG_SEND_REF_STATUS,
285 f8a36e22 2021-08-26 stsp 0, 0, len);
286 f8a36e22 2021-08-26 stsp if (wbuf == NULL)
287 f8a36e22 2021-08-26 stsp return got_error_from_errno("imsg_create SEND_REF_STATUS");
289 f8a36e22 2021-08-26 stsp /* Keep in sync with struct got_imsg_send_ref_status definition! */
290 1453347d 2022-05-19 stsp if (imsg_add(wbuf, &success, sizeof(success)) == -1)
291 1453347d 2022-05-19 stsp return got_error_from_errno("imsg_add SEND_REF_STATUS");
292 1453347d 2022-05-19 stsp if (imsg_add(wbuf, &reflen, sizeof(reflen)) == -1)
293 1453347d 2022-05-19 stsp return got_error_from_errno("imsg_add SEND_REF_STATUS");
294 6242c45b 2022-11-14 op if (imsg_add(wbuf, &errmsglen, sizeof(errmsglen)) == -1)
295 6242c45b 2022-11-14 op return got_error_from_errno("imsg_add SEND_REF_STATUS");
296 1453347d 2022-05-19 stsp if (imsg_add(wbuf, refname, reflen) == -1)
297 1453347d 2022-05-19 stsp return got_error_from_errno("imsg_add SEND_REF_STATUS");
298 6242c45b 2022-11-14 op if (imsg_add(wbuf, errmsg, errmsglen) == -1)
299 6242c45b 2022-11-14 op return got_error_from_errno("imsg_add SEND_REF_STATUS");
301 f8a36e22 2021-08-26 stsp wbuf->fd = -1;
302 f8a36e22 2021-08-26 stsp imsg_close(ibuf, wbuf);
303 f8a36e22 2021-08-26 stsp return got_privsep_flush_imsg(ibuf);
306 f8a36e22 2021-08-26 stsp static const struct got_error *
307 f8a36e22 2021-08-26 stsp describe_refchange(int *n, int *sent_my_capabilites,
308 f8a36e22 2021-08-26 stsp const char *my_capabilities, char *buf, size_t bufsize,
309 f8a36e22 2021-08-26 stsp const char *refname, const char *old_hashstr, const char *new_hashstr)
311 f8a36e22 2021-08-26 stsp *n = snprintf(buf, bufsize, "%s %s %s",
312 f8a36e22 2021-08-26 stsp old_hashstr, new_hashstr, refname);
313 438d0cc3 2022-08-16 op if (*n < 0 || (size_t)*n >= bufsize)
314 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
317 f8a36e22 2021-08-26 stsp * We must announce our capabilities along with the first
318 f8a36e22 2021-08-26 stsp * reference. Unfortunately, the protocol requires an embedded
319 f8a36e22 2021-08-26 stsp * NUL as a separator between reference name and capabilities,
320 f8a36e22 2021-08-26 stsp * which we have to deal with here.
321 f8a36e22 2021-08-26 stsp * It also requires a linefeed for terminating packet data.
323 f8a36e22 2021-08-26 stsp if (!*sent_my_capabilites && my_capabilities != NULL) {
325 f8a36e22 2021-08-26 stsp if (*n >= bufsize - 1)
326 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
327 f8a36e22 2021-08-26 stsp m = snprintf(buf + *n + 1, /* offset after '\0' */
328 f8a36e22 2021-08-26 stsp bufsize - (*n + 1), "%s\n", my_capabilities);
329 438d0cc3 2022-08-16 op if (m < 0 || *n + m >= bufsize)
330 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
332 f8a36e22 2021-08-26 stsp *sent_my_capabilites = 1;
334 f8a36e22 2021-08-26 stsp *n = strlcat(buf, "\n", bufsize);
335 f8a36e22 2021-08-26 stsp if (*n >= bufsize)
336 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
339 f8a36e22 2021-08-26 stsp return NULL;
342 f8a36e22 2021-08-26 stsp static const struct got_error *
343 f8a36e22 2021-08-26 stsp send_pack(int fd, struct got_pathlist_head *refs,
344 f8a36e22 2021-08-26 stsp struct got_pathlist_head *delete_refs, struct imsgbuf *ibuf)
346 f8a36e22 2021-08-26 stsp const struct got_error *err = NULL;
347 77d7d3bb 2021-09-05 stsp char buf[GOT_PKT_MAX];
348 d58ddaf3 2022-03-17 naddy const unsigned char zero_id[SHA1_DIGEST_LENGTH] = { 0 };
349 f8a36e22 2021-08-26 stsp char old_hashstr[SHA1_DIGEST_STRING_LENGTH];
350 f8a36e22 2021-08-26 stsp char new_hashstr[SHA1_DIGEST_STRING_LENGTH];
351 f8a36e22 2021-08-26 stsp struct got_pathlist_head their_refs;
352 f8a36e22 2021-08-26 stsp int is_firstpkt = 1;
353 f8a36e22 2021-08-26 stsp int n, nsent = 0;
354 f8a36e22 2021-08-26 stsp int packfd = -1;
355 f8a36e22 2021-08-26 stsp char *id_str = NULL, *refname = NULL;
356 f8a36e22 2021-08-26 stsp struct got_object_id *id = NULL;
357 f8a36e22 2021-08-26 stsp char *server_capabilities = NULL, *my_capabilities = NULL;
358 f8a36e22 2021-08-26 stsp struct got_pathlist_entry *pe;
359 f8a36e22 2021-08-26 stsp int sent_my_capabilites = 0;
361 f8a36e22 2021-08-26 stsp TAILQ_INIT(&their_refs);
363 f8a36e22 2021-08-26 stsp if (TAILQ_EMPTY(refs) && TAILQ_EMPTY(delete_refs))
364 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_SEND_EMPTY);
366 f8a36e22 2021-08-26 stsp while (1) {
367 f024663d 2021-09-05 stsp err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
370 f8a36e22 2021-08-26 stsp if (n == 0)
372 f8a36e22 2021-08-26 stsp if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
373 f8a36e22 2021-08-26 stsp err = send_error(&buf[4], n - 4);
376 e99d9267 2021-10-07 stsp free(id_str);
377 e99d9267 2021-10-07 stsp free(refname);
378 bd3d9e54 2021-09-05 stsp err = got_gitproto_parse_refline(&id_str, &refname,
379 bd3d9e54 2021-09-05 stsp &server_capabilities, buf, n);
382 f8a36e22 2021-08-26 stsp if (is_firstpkt) {
383 110104b6 2022-11-07 stsp if (server_capabilities == NULL) {
384 110104b6 2022-11-07 stsp server_capabilities = strdup("");
385 110104b6 2022-11-07 stsp if (server_capabilities == NULL) {
386 110104b6 2022-11-07 stsp err = got_error_from_errno("strdup");
390 f8a36e22 2021-08-26 stsp if (chattygot && server_capabilities[0] != '\0')
391 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: server capabilities: %s\n",
392 f8a36e22 2021-08-26 stsp getprogname(), server_capabilities);
393 bd3d9e54 2021-09-05 stsp err = got_gitproto_match_capabilities(&my_capabilities,
394 bd3d9e54 2021-09-05 stsp NULL, server_capabilities, got_capabilities,
395 bd3d9e54 2021-09-05 stsp nitems(got_capabilities));
398 f8a36e22 2021-08-26 stsp if (chattygot)
399 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: my capabilities:%s\n",
400 110104b6 2022-11-07 stsp getprogname(),
401 110104b6 2022-11-07 stsp my_capabilities ? my_capabilities : "");
402 f8a36e22 2021-08-26 stsp is_firstpkt = 0;
404 f8a36e22 2021-08-26 stsp if (strstr(refname, "^{}")) {
405 f8a36e22 2021-08-26 stsp if (chattygot) {
406 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: ignoring %s\n",
407 f8a36e22 2021-08-26 stsp getprogname(), refname);
412 f8a36e22 2021-08-26 stsp id = malloc(sizeof(*id));
413 f8a36e22 2021-08-26 stsp if (id == NULL) {
414 f8a36e22 2021-08-26 stsp err = got_error_from_errno("malloc");
417 87a3ab84 2023-02-23 op if (!got_parse_object_id(id, id_str, GOT_HASH_SHA1)) {
418 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_BAD_OBJ_ID_STR);
421 f8a36e22 2021-08-26 stsp err = send_their_ref(ibuf, id, refname);
425 f8a36e22 2021-08-26 stsp err = got_pathlist_append(&their_refs, refname, id);
426 eff56850 2022-07-21 florian if (err)
427 eff56850 2022-07-21 florian goto done;
429 f8a36e22 2021-08-26 stsp if (chattygot)
430 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: remote has %s %s\n",
431 f8a36e22 2021-08-26 stsp getprogname(), refname, id_str);
432 f8a36e22 2021-08-26 stsp free(id_str);
433 f8a36e22 2021-08-26 stsp id_str = NULL;
434 f8a36e22 2021-08-26 stsp refname = NULL; /* do not free; owned by their_refs */
435 f8a36e22 2021-08-26 stsp id = NULL; /* do not free; owned by their_refs */
438 f8a36e22 2021-08-26 stsp if (!TAILQ_EMPTY(delete_refs)) {
439 f8a36e22 2021-08-26 stsp if (my_capabilities == NULL ||
440 f8a36e22 2021-08-26 stsp strstr(my_capabilities, GOT_CAPA_DELETE_REFS) == NULL) {
441 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_CAPA_DELETE_REFS);
446 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(pe, delete_refs, entry) {
447 f8a36e22 2021-08-26 stsp const char *refname = pe->path;
448 f8a36e22 2021-08-26 stsp struct got_pathlist_entry *their_pe;
449 f8a36e22 2021-08-26 stsp struct got_object_id *their_id = NULL;
451 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(their_pe, &their_refs, entry) {
452 f8a36e22 2021-08-26 stsp const char *their_refname = their_pe->path;
453 f8a36e22 2021-08-26 stsp if (got_path_cmp(refname, their_refname,
454 f8a36e22 2021-08-26 stsp strlen(refname), strlen(their_refname)) == 0) {
455 f8a36e22 2021-08-26 stsp their_id = their_pe->data;
459 f8a36e22 2021-08-26 stsp if (their_id == NULL) {
460 f8a36e22 2021-08-26 stsp err = got_error_fmt(GOT_ERR_NOT_REF,
461 f8a36e22 2021-08-26 stsp "%s does not exist in remote repository",
466 f8a36e22 2021-08-26 stsp got_sha1_digest_to_str(their_id->sha1, old_hashstr,
467 f8a36e22 2021-08-26 stsp sizeof(old_hashstr));
468 f8a36e22 2021-08-26 stsp got_sha1_digest_to_str(zero_id, new_hashstr,
469 f8a36e22 2021-08-26 stsp sizeof(new_hashstr));
470 f8a36e22 2021-08-26 stsp err = describe_refchange(&n, &sent_my_capabilites,
471 f8a36e22 2021-08-26 stsp my_capabilities, buf, sizeof(buf), refname,
472 f8a36e22 2021-08-26 stsp old_hashstr, new_hashstr);
475 f024663d 2021-09-05 stsp err = got_pkt_writepkt(fd, buf, n, chattygot);
478 f8a36e22 2021-08-26 stsp if (chattygot) {
479 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: deleting %s %s\n",
480 f8a36e22 2021-08-26 stsp getprogname(), refname, old_hashstr);
485 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(pe, refs, entry) {
486 f8a36e22 2021-08-26 stsp const char *refname = pe->path;
487 f8a36e22 2021-08-26 stsp struct got_object_id *id = pe->data;
488 f8a36e22 2021-08-26 stsp struct got_object_id *their_id = NULL;
489 f8a36e22 2021-08-26 stsp struct got_pathlist_entry *their_pe;
491 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(their_pe, &their_refs, entry) {
492 f8a36e22 2021-08-26 stsp const char *their_refname = their_pe->path;
493 f8a36e22 2021-08-26 stsp if (got_path_cmp(refname, their_refname,
494 f8a36e22 2021-08-26 stsp strlen(refname), strlen(their_refname)) == 0) {
495 f8a36e22 2021-08-26 stsp their_id = their_pe->data;
499 f8a36e22 2021-08-26 stsp if (their_id) {
500 f8a36e22 2021-08-26 stsp if (got_object_id_cmp(id, their_id) == 0) {
501 f8a36e22 2021-08-26 stsp if (chattygot) {
502 f8a36e22 2021-08-26 stsp fprintf(stderr,
503 f8a36e22 2021-08-26 stsp "%s: no change for %s\n",
504 f8a36e22 2021-08-26 stsp getprogname(), refname);
508 f8a36e22 2021-08-26 stsp got_sha1_digest_to_str(their_id->sha1, old_hashstr,
509 f8a36e22 2021-08-26 stsp sizeof(old_hashstr));
511 f8a36e22 2021-08-26 stsp got_sha1_digest_to_str(zero_id, old_hashstr,
512 f8a36e22 2021-08-26 stsp sizeof(old_hashstr));
514 f8a36e22 2021-08-26 stsp got_sha1_digest_to_str(id->sha1, new_hashstr,
515 f8a36e22 2021-08-26 stsp sizeof(new_hashstr));
516 f8a36e22 2021-08-26 stsp err = describe_refchange(&n, &sent_my_capabilites,
517 f8a36e22 2021-08-26 stsp my_capabilities, buf, sizeof(buf), refname,
518 f8a36e22 2021-08-26 stsp old_hashstr, new_hashstr);
521 f024663d 2021-09-05 stsp err = got_pkt_writepkt(fd, buf, n, chattygot);
524 f8a36e22 2021-08-26 stsp if (chattygot) {
525 f8a36e22 2021-08-26 stsp if (their_id) {
526 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: updating %s %s -> %s\n",
527 f8a36e22 2021-08-26 stsp getprogname(), refname, old_hashstr,
528 f8a36e22 2021-08-26 stsp new_hashstr);
530 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: creating %s %s\n",
531 f8a36e22 2021-08-26 stsp getprogname(), refname, new_hashstr);
536 f024663d 2021-09-05 stsp err = got_pkt_flushpkt(fd, chattygot);
540 f8a36e22 2021-08-26 stsp err = send_pack_request(ibuf);
544 f8a36e22 2021-08-26 stsp err = recv_packfd(&packfd, ibuf);
548 27b75514 2021-08-28 stsp if (packfd != -1) {
549 27b75514 2021-08-28 stsp err = send_pack_file(fd, packfd, ibuf);
554 f024663d 2021-09-05 stsp err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
557 f8a36e22 2021-08-26 stsp if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
558 f8a36e22 2021-08-26 stsp err = send_error(&buf[4], n - 4);
560 f8a36e22 2021-08-26 stsp } else if (n < 10 || strncmp(buf, "unpack ok\n", 10) != 0) {
561 f8a36e22 2021-08-26 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
562 f8a36e22 2021-08-26 stsp "unexpected message from server");
566 f8a36e22 2021-08-26 stsp while (nsent > 0) {
567 f024663d 2021-09-05 stsp err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
570 f8a36e22 2021-08-26 stsp if (n < 3) {
571 f8a36e22 2021-08-26 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
572 f8a36e22 2021-08-26 stsp "unexpected message from server");
574 13b2bc37 2022-10-23 stsp } else if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
575 13b2bc37 2022-10-23 stsp err = send_error(&buf[4], n - 4);
577 f8a36e22 2021-08-26 stsp } else if (strncmp(buf, "ok ", 3) == 0) {
578 f8a36e22 2021-08-26 stsp err = send_ref_status(ibuf, buf + 3, 1,
579 abc59930 2021-09-05 naddy refs, delete_refs);
582 f8a36e22 2021-08-26 stsp } else if (strncmp(buf, "ng ", 3) == 0) {
583 f8a36e22 2021-08-26 stsp err = send_ref_status(ibuf, buf + 3, 0,
584 f8a36e22 2021-08-26 stsp refs, delete_refs);
588 f8a36e22 2021-08-26 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
589 f8a36e22 2021-08-26 stsp "unexpected message from server");
595 f8a36e22 2021-08-26 stsp err = send_done(ibuf);
597 d8bacb93 2023-01-10 mark got_pathlist_free(&their_refs, GOT_PATHLIST_FREE_ALL);
598 f8a36e22 2021-08-26 stsp free(id_str);
600 f8a36e22 2021-08-26 stsp free(refname);
601 f8a36e22 2021-08-26 stsp free(server_capabilities);
602 f8a36e22 2021-08-26 stsp return err;
606 f8a36e22 2021-08-26 stsp main(int argc, char **argv)
608 f8a36e22 2021-08-26 stsp const struct got_error *err = NULL;
609 9114dd43 2023-01-10 mark int sendfd = -1;
610 f8a36e22 2021-08-26 stsp struct imsgbuf ibuf;
611 f8a36e22 2021-08-26 stsp struct imsg imsg;
612 f8a36e22 2021-08-26 stsp struct got_pathlist_head refs;
613 f8a36e22 2021-08-26 stsp struct got_pathlist_head delete_refs;
614 f8a36e22 2021-08-26 stsp struct got_imsg_send_request send_req;
615 f8a36e22 2021-08-26 stsp struct got_imsg_send_ref href;
616 030daac8 2021-09-25 stsp size_t datalen, i;
618 f8a36e22 2021-08-26 stsp static int attached;
619 f8a36e22 2021-08-26 stsp while (!attached)
623 f8a36e22 2021-08-26 stsp TAILQ_INIT(&refs);
624 f8a36e22 2021-08-26 stsp TAILQ_INIT(&delete_refs);
626 f8a36e22 2021-08-26 stsp imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
627 f8a36e22 2021-08-26 stsp #ifndef PROFILE
628 f8a36e22 2021-08-26 stsp /* revoke access to most system calls */
629 f8a36e22 2021-08-26 stsp if (pledge("stdio recvfd", NULL) == -1) {
630 f8a36e22 2021-08-26 stsp err = got_error_from_errno("pledge");
631 f8a36e22 2021-08-26 stsp got_privsep_send_error(&ibuf, err);
635 f8a36e22 2021-08-26 stsp if ((err = got_privsep_recv_imsg(&imsg, &ibuf, 0)) != 0) {
636 f8a36e22 2021-08-26 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
637 f8a36e22 2021-08-26 stsp err = NULL;
640 f8a36e22 2021-08-26 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
642 f8a36e22 2021-08-26 stsp if (imsg.hdr.type != GOT_IMSG_SEND_REQUEST) {
643 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
646 f8a36e22 2021-08-26 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
647 f8a36e22 2021-08-26 stsp if (datalen < sizeof(send_req)) {
648 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
651 f8a36e22 2021-08-26 stsp memcpy(&send_req, imsg.data, sizeof(send_req));
652 f8a36e22 2021-08-26 stsp sendfd = imsg.fd;
653 f8a36e22 2021-08-26 stsp imsg_free(&imsg);
655 f8a36e22 2021-08-26 stsp if (send_req.verbosity > 0)
656 f8a36e22 2021-08-26 stsp chattygot += send_req.verbosity;
658 f8a36e22 2021-08-26 stsp for (i = 0; i < send_req.nrefs; i++) {
659 f8a36e22 2021-08-26 stsp struct got_object_id *id;
660 f8a36e22 2021-08-26 stsp char *refname;
662 f8a36e22 2021-08-26 stsp if ((err = got_privsep_recv_imsg(&imsg, &ibuf, 0)) != 0) {
663 f8a36e22 2021-08-26 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
664 f8a36e22 2021-08-26 stsp err = NULL;
667 f8a36e22 2021-08-26 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
669 f8a36e22 2021-08-26 stsp if (imsg.hdr.type != GOT_IMSG_SEND_REF) {
670 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
673 f8a36e22 2021-08-26 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
674 f8a36e22 2021-08-26 stsp if (datalen < sizeof(href)) {
675 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
678 f8a36e22 2021-08-26 stsp memcpy(&href, imsg.data, sizeof(href));
679 f8a36e22 2021-08-26 stsp if (datalen - sizeof(href) < href.name_len) {
680 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
683 f8a36e22 2021-08-26 stsp refname = malloc(href.name_len + 1);
684 f8a36e22 2021-08-26 stsp if (refname == NULL) {
685 f8a36e22 2021-08-26 stsp err = got_error_from_errno("malloc");
688 f8a36e22 2021-08-26 stsp memcpy(refname, imsg.data + sizeof(href), href.name_len);
689 f8a36e22 2021-08-26 stsp refname[href.name_len] = '\0';
692 f8a36e22 2021-08-26 stsp * Prevent sending of references that won't make any
693 f8a36e22 2021-08-26 stsp * sense outside the local repository's context.
695 f8a36e22 2021-08-26 stsp if (strncmp(refname, "refs/got/", 9) == 0 ||
696 f8a36e22 2021-08-26 stsp strncmp(refname, "refs/remotes/", 13) == 0) {
697 f8a36e22 2021-08-26 stsp err = got_error_fmt(GOT_ERR_SEND_BAD_REF,
698 f8a36e22 2021-08-26 stsp "%s", refname);
702 f8a36e22 2021-08-26 stsp id = malloc(sizeof(*id));
703 f8a36e22 2021-08-26 stsp if (id == NULL) {
704 f8a36e22 2021-08-26 stsp free(refname);
705 f8a36e22 2021-08-26 stsp err = got_error_from_errno("malloc");
708 5eb14fb9 2023-02-01 op memcpy(id, &href.id, sizeof(*id));
709 f8a36e22 2021-08-26 stsp if (href.delete)
710 f8a36e22 2021-08-26 stsp err = got_pathlist_append(&delete_refs, refname, id);
712 f8a36e22 2021-08-26 stsp err = got_pathlist_append(&refs, refname, id);
714 f8a36e22 2021-08-26 stsp free(refname);
719 f8a36e22 2021-08-26 stsp imsg_free(&imsg);
722 f8a36e22 2021-08-26 stsp err = send_pack(sendfd, &refs, &delete_refs, &ibuf);
724 d8bacb93 2023-01-10 mark got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
725 d8bacb93 2023-01-10 mark got_pathlist_free(&delete_refs, GOT_PATHLIST_FREE_ALL);
726 f8a36e22 2021-08-26 stsp if (sendfd != -1 && close(sendfd) == -1 && err == NULL)
727 f8a36e22 2021-08-26 stsp err = got_error_from_errno("close");
728 f8a36e22 2021-08-26 stsp if (err != NULL && err->code != GOT_ERR_CANCELLED) {
729 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
730 f8a36e22 2021-08-26 stsp got_privsep_send_error(&ibuf, err);
