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 8b925c6c 2022-07-16 thomas #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 <limits.h>
27 f8a36e22 2021-08-26 stsp #include <signal.h>
28 f8a36e22 2021-08-26 stsp #include <stdio.h>
29 f8a36e22 2021-08-26 stsp #include <stdlib.h>
30 f8a36e22 2021-08-26 stsp #include <string.h>
31 f8a36e22 2021-08-26 stsp #include <ctype.h>
32 f8a36e22 2021-08-26 stsp #include <fcntl.h>
33 f8a36e22 2021-08-26 stsp #include <unistd.h>
34 f8a36e22 2021-08-26 stsp #include <zlib.h>
35 f8a36e22 2021-08-26 stsp #include <err.h>
37 f8a36e22 2021-08-26 stsp #include "got_error.h"
38 f8a36e22 2021-08-26 stsp #include "got_object.h"
39 f8a36e22 2021-08-26 stsp #include "got_path.h"
40 f8a36e22 2021-08-26 stsp #include "got_version.h"
41 f8a36e22 2021-08-26 stsp #include "got_fetch.h"
42 f8a36e22 2021-08-26 stsp #include "got_reference.h"
44 be288a59 2023-02-23 thomas #include "got_lib_hash.h"
45 f8a36e22 2021-08-26 stsp #include "got_lib_delta.h"
46 f8a36e22 2021-08-26 stsp #include "got_lib_object.h"
47 f8a36e22 2021-08-26 stsp #include "got_lib_object_parse.h"
48 f8a36e22 2021-08-26 stsp #include "got_lib_privsep.h"
49 f8a36e22 2021-08-26 stsp #include "got_lib_pack.h"
50 f024663d 2021-09-05 stsp #include "got_lib_pkt.h"
51 bd3d9e54 2021-09-05 stsp #include "got_lib_gitproto.h"
52 b7e51f67 2022-02-23 thomas #include "got_lib_ratelimit.h"
53 c0876f4c 2022-10-31 thomas #include "got_lib_poll.h"
55 f8a36e22 2021-08-26 stsp #ifndef nitems
56 f8a36e22 2021-08-26 stsp #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
59 f8a36e22 2021-08-26 stsp struct got_object *indexed;
60 f8a36e22 2021-08-26 stsp static int chattygot;
62 f8a36e22 2021-08-26 stsp static const struct got_capability got_capabilities[] = {
63 f8a36e22 2021-08-26 stsp { GOT_CAPA_AGENT, "got/" GOT_VERSION_STR },
64 f8a36e22 2021-08-26 stsp { GOT_CAPA_OFS_DELTA, NULL },
66 f8a36e22 2021-08-26 stsp { GOT_CAPA_SIDE_BAND_64K, NULL },
68 f8a36e22 2021-08-26 stsp { GOT_CAPA_REPORT_STATUS, NULL },
69 f8a36e22 2021-08-26 stsp { GOT_CAPA_DELETE_REFS, NULL },
72 f8a36e22 2021-08-26 stsp static const struct got_error *
73 b7e51f67 2022-02-23 thomas send_upload_progress(struct imsgbuf *ibuf, off_t bytes,
74 b7e51f67 2022-02-23 thomas struct got_ratelimit *rl)
76 b7e51f67 2022-02-23 thomas const struct got_error *err = NULL;
77 b7e51f67 2022-02-23 thomas int elapsed = 0;
80 b7e51f67 2022-02-23 thomas err = got_ratelimit_check(&elapsed, rl);
81 b7e51f67 2022-02-23 thomas if (err || !elapsed)
82 b7e51f67 2022-02-23 thomas return err;
85 f8a36e22 2021-08-26 stsp if (imsg_compose(ibuf, GOT_IMSG_SEND_UPLOAD_PROGRESS, 0, 0, -1,
86 f8a36e22 2021-08-26 stsp &bytes, sizeof(bytes)) == -1)
87 f8a36e22 2021-08-26 stsp return got_error_from_errno(
88 f8a36e22 2021-08-26 stsp "imsg_compose SEND_UPLOAD_PROGRESS");
90 f8a36e22 2021-08-26 stsp return got_privsep_flush_imsg(ibuf);
93 f8a36e22 2021-08-26 stsp static const struct got_error *
94 f8a36e22 2021-08-26 stsp send_pack_request(struct imsgbuf *ibuf)
96 f8a36e22 2021-08-26 stsp if (imsg_compose(ibuf, GOT_IMSG_SEND_PACK_REQUEST, 0, 0, -1,
97 f8a36e22 2021-08-26 stsp NULL, 0) == -1)
98 f8a36e22 2021-08-26 stsp return got_error_from_errno("imsg_compose SEND_PACK_REQUEST");
99 f8a36e22 2021-08-26 stsp return got_privsep_flush_imsg(ibuf);
102 f8a36e22 2021-08-26 stsp static const struct got_error *
103 f8a36e22 2021-08-26 stsp send_done(struct imsgbuf *ibuf)
105 f8a36e22 2021-08-26 stsp if (imsg_compose(ibuf, GOT_IMSG_SEND_DONE, 0, 0, -1, NULL, 0) == -1)
106 f8a36e22 2021-08-26 stsp return got_error_from_errno("imsg_compose SEND_DONE");
107 f8a36e22 2021-08-26 stsp return got_privsep_flush_imsg(ibuf);
110 f8a36e22 2021-08-26 stsp static const struct got_error *
111 f8a36e22 2021-08-26 stsp recv_packfd(int *packfd, struct imsgbuf *ibuf)
113 f8a36e22 2021-08-26 stsp const struct got_error *err;
114 f8a36e22 2021-08-26 stsp struct imsg imsg;
116 f8a36e22 2021-08-26 stsp *packfd = -1;
118 f8a36e22 2021-08-26 stsp err = got_privsep_recv_imsg(&imsg, ibuf, 0);
120 f8a36e22 2021-08-26 stsp return err;
122 f8a36e22 2021-08-26 stsp if (imsg.hdr.type == GOT_IMSG_STOP) {
123 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_CANCELLED);
127 f8a36e22 2021-08-26 stsp if (imsg.hdr.type != GOT_IMSG_SEND_PACKFD) {
128 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
132 f8a36e22 2021-08-26 stsp if (imsg.hdr.len - IMSG_HEADER_SIZE != 0) {
133 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
137 f8a36e22 2021-08-26 stsp *packfd = imsg.fd;
139 f8a36e22 2021-08-26 stsp imsg_free(&imsg);
140 f8a36e22 2021-08-26 stsp return err;
143 f8a36e22 2021-08-26 stsp static const struct got_error *
144 f8a36e22 2021-08-26 stsp send_pack_file(int sendfd, int packfd, struct imsgbuf *ibuf)
146 f8a36e22 2021-08-26 stsp const struct got_error *err;
147 f8a36e22 2021-08-26 stsp unsigned char buf[8192];
148 c0876f4c 2022-10-31 thomas ssize_t r;
149 f8a36e22 2021-08-26 stsp off_t wtotal = 0;
150 b7e51f67 2022-02-23 thomas struct got_ratelimit rl;
152 f8a36e22 2021-08-26 stsp if (lseek(packfd, 0L, SEEK_SET) == -1)
153 f8a36e22 2021-08-26 stsp return got_error_from_errno("lseek");
155 b7e51f67 2022-02-23 thomas got_ratelimit_init(&rl, 0, 500);
158 f8a36e22 2021-08-26 stsp r = read(packfd, buf, sizeof(buf));
159 f8a36e22 2021-08-26 stsp if (r == -1)
160 f8a36e22 2021-08-26 stsp return got_error_from_errno("read");
161 f8a36e22 2021-08-26 stsp if (r == 0)
163 c0876f4c 2022-10-31 thomas err = got_poll_write_full(sendfd, buf, r);
165 c0876f4c 2022-10-31 thomas return NULL;
166 c0876f4c 2022-10-31 thomas wtotal += r;
167 b7e51f67 2022-02-23 thomas err = send_upload_progress(ibuf, wtotal, &rl);
169 f8a36e22 2021-08-26 stsp return err;
172 b7e51f67 2022-02-23 thomas return send_upload_progress(ibuf, wtotal, NULL);
175 f8a36e22 2021-08-26 stsp static const struct got_error *
176 f8a36e22 2021-08-26 stsp send_error(const char *buf, size_t len)
178 f8a36e22 2021-08-26 stsp static char msg[1024];
181 f8a36e22 2021-08-26 stsp for (i = 0; i < len && i < sizeof(msg) - 1; i++) {
182 6771d425 2022-11-17 thomas if (!isprint((unsigned char)buf[i]))
183 f8a36e22 2021-08-26 stsp return got_error_msg(GOT_ERR_BAD_PACKET,
184 f8a36e22 2021-08-26 stsp "non-printable error message received from server");
185 f8a36e22 2021-08-26 stsp msg[i] = buf[i];
187 f8a36e22 2021-08-26 stsp msg[i] = '\0';
188 f8a36e22 2021-08-26 stsp return got_error_msg(GOT_ERR_SEND_FAILED, msg);
191 f8a36e22 2021-08-26 stsp static const struct got_error *
192 f8a36e22 2021-08-26 stsp send_their_ref(struct imsgbuf *ibuf, struct got_object_id *refid,
193 f8a36e22 2021-08-26 stsp const char *refname)
195 f8a36e22 2021-08-26 stsp struct ibuf *wbuf;
196 f8a36e22 2021-08-26 stsp size_t len, reflen = strlen(refname);
198 f8a36e22 2021-08-26 stsp len = sizeof(struct got_imsg_send_remote_ref) + reflen;
199 f8a36e22 2021-08-26 stsp if (len >= MAX_IMSGSIZE - IMSG_HEADER_SIZE)
200 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
202 f8a36e22 2021-08-26 stsp wbuf = imsg_create(ibuf, GOT_IMSG_SEND_REMOTE_REF, 0, 0, len);
203 f8a36e22 2021-08-26 stsp if (wbuf == NULL)
204 f8a36e22 2021-08-26 stsp return got_error_from_errno("imsg_create SEND_REMOTE_REF");
206 f8a36e22 2021-08-26 stsp /* Keep in sync with struct got_imsg_send_remote_ref definition! */
207 0f23036a 2023-02-03 thomas if (imsg_add(wbuf, refid, sizeof(*refid)) == -1)
208 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add SEND_REMOTE_REF");
209 e9f1a409 2022-05-19 thomas if (imsg_add(wbuf, &reflen, sizeof(reflen)) == -1)
210 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add SEND_REMOTE_REF");
211 e9f1a409 2022-05-19 thomas if (imsg_add(wbuf, refname, reflen) == -1)
212 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add SEND_REMOTE_REF");
214 f8a36e22 2021-08-26 stsp wbuf->fd = -1;
215 f8a36e22 2021-08-26 stsp imsg_close(ibuf, wbuf);
216 f8a36e22 2021-08-26 stsp return got_privsep_flush_imsg(ibuf);
219 f8a36e22 2021-08-26 stsp static const struct got_error *
220 f8a36e22 2021-08-26 stsp send_ref_status(struct imsgbuf *ibuf, const char *refname, int success,
221 f8a36e22 2021-08-26 stsp struct got_pathlist_head *refs, struct got_pathlist_head *delete_refs)
223 f8a36e22 2021-08-26 stsp struct ibuf *wbuf;
224 3fe5d0fe 2022-11-17 thomas size_t i, len, reflen, errmsglen = 0;
225 f8a36e22 2021-08-26 stsp struct got_pathlist_entry *pe;
226 f8a36e22 2021-08-26 stsp int ref_valid = 0;
227 3fe5d0fe 2022-11-17 thomas char *eol, *sp;
228 3fe5d0fe 2022-11-17 thomas const char *errmsg = "";
230 f8a36e22 2021-08-26 stsp eol = strchr(refname, '\n');
231 f8a36e22 2021-08-26 stsp if (eol == NULL) {
232 f8a36e22 2021-08-26 stsp return got_error_msg(GOT_ERR_BAD_PACKET,
233 f8a36e22 2021-08-26 stsp "unexpected message from server");
235 f8a36e22 2021-08-26 stsp *eol = '\0';
237 3fe5d0fe 2022-11-17 thomas sp = strchr(refname, ' ');
238 3fe5d0fe 2022-11-17 thomas if (sp != NULL) {
239 3fe5d0fe 2022-11-17 thomas *sp++ = '\0';
240 3fe5d0fe 2022-11-17 thomas errmsg = sp;
241 3fe5d0fe 2022-11-17 thomas errmsglen = strlen(errmsg);
243 3fe5d0fe 2022-11-17 thomas for (i = 0; i < errmsglen; ++i) {
244 3fe5d0fe 2022-11-17 thomas if (!isprint((unsigned char)errmsg[i])) {
245 3fe5d0fe 2022-11-17 thomas return got_error_msg(GOT_ERR_BAD_PACKET,
246 3fe5d0fe 2022-11-17 thomas "non-printable error message received "
247 3fe5d0fe 2022-11-17 thomas "from the server");
252 3fe5d0fe 2022-11-17 thomas reflen = strlen(refname);
253 3fe5d0fe 2022-11-17 thomas if (!got_ref_name_is_valid(refname)) {
254 3fe5d0fe 2022-11-17 thomas return got_error_msg(GOT_ERR_BAD_PACKET,
255 3fe5d0fe 2022-11-17 thomas "unexpected message from server");
258 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(pe, refs, entry) {
259 f8a36e22 2021-08-26 stsp if (strcmp(refname, pe->path) == 0) {
260 f8a36e22 2021-08-26 stsp ref_valid = 1;
264 f8a36e22 2021-08-26 stsp if (!ref_valid) {
265 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(pe, delete_refs, entry) {
266 f8a36e22 2021-08-26 stsp if (strcmp(refname, pe->path) == 0) {
267 f8a36e22 2021-08-26 stsp ref_valid = 1;
272 f8a36e22 2021-08-26 stsp if (!ref_valid) {
273 f8a36e22 2021-08-26 stsp return got_error_msg(GOT_ERR_BAD_PACKET,
274 f8a36e22 2021-08-26 stsp "unexpected message from server");
277 3fe5d0fe 2022-11-17 thomas len = sizeof(struct got_imsg_send_ref_status) + reflen + errmsglen;
278 f8a36e22 2021-08-26 stsp if (len >= MAX_IMSGSIZE - IMSG_HEADER_SIZE)
279 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
281 f8a36e22 2021-08-26 stsp wbuf = imsg_create(ibuf, GOT_IMSG_SEND_REF_STATUS,
282 f8a36e22 2021-08-26 stsp 0, 0, len);
283 f8a36e22 2021-08-26 stsp if (wbuf == NULL)
284 f8a36e22 2021-08-26 stsp return got_error_from_errno("imsg_create SEND_REF_STATUS");
286 f8a36e22 2021-08-26 stsp /* Keep in sync with struct got_imsg_send_ref_status definition! */
287 e9f1a409 2022-05-19 thomas if (imsg_add(wbuf, &success, sizeof(success)) == -1)
288 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add SEND_REF_STATUS");
289 e9f1a409 2022-05-19 thomas if (imsg_add(wbuf, &reflen, sizeof(reflen)) == -1)
290 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add SEND_REF_STATUS");
291 3fe5d0fe 2022-11-17 thomas if (imsg_add(wbuf, &errmsglen, sizeof(errmsglen)) == -1)
292 3fe5d0fe 2022-11-17 thomas return got_error_from_errno("imsg_add SEND_REF_STATUS");
293 e9f1a409 2022-05-19 thomas if (imsg_add(wbuf, refname, reflen) == -1)
294 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add SEND_REF_STATUS");
295 3fe5d0fe 2022-11-17 thomas if (imsg_add(wbuf, errmsg, errmsglen) == -1)
296 3fe5d0fe 2022-11-17 thomas return got_error_from_errno("imsg_add SEND_REF_STATUS");
298 f8a36e22 2021-08-26 stsp wbuf->fd = -1;
299 f8a36e22 2021-08-26 stsp imsg_close(ibuf, wbuf);
300 f8a36e22 2021-08-26 stsp return got_privsep_flush_imsg(ibuf);
303 f8a36e22 2021-08-26 stsp static const struct got_error *
304 f8a36e22 2021-08-26 stsp describe_refchange(int *n, int *sent_my_capabilites,
305 f8a36e22 2021-08-26 stsp const char *my_capabilities, char *buf, size_t bufsize,
306 f8a36e22 2021-08-26 stsp const char *refname, const char *old_hashstr, const char *new_hashstr)
308 f8a36e22 2021-08-26 stsp *n = snprintf(buf, bufsize, "%s %s %s",
309 f8a36e22 2021-08-26 stsp old_hashstr, new_hashstr, refname);
310 717a78d4 2022-08-16 thomas if (*n < 0 || (size_t)*n >= bufsize)
311 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
314 f8a36e22 2021-08-26 stsp * We must announce our capabilities along with the first
315 f8a36e22 2021-08-26 stsp * reference. Unfortunately, the protocol requires an embedded
316 f8a36e22 2021-08-26 stsp * NUL as a separator between reference name and capabilities,
317 f8a36e22 2021-08-26 stsp * which we have to deal with here.
318 f8a36e22 2021-08-26 stsp * It also requires a linefeed for terminating packet data.
320 f8a36e22 2021-08-26 stsp if (!*sent_my_capabilites && my_capabilities != NULL) {
322 f8a36e22 2021-08-26 stsp if (*n >= bufsize - 1)
323 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
324 f8a36e22 2021-08-26 stsp m = snprintf(buf + *n + 1, /* offset after '\0' */
325 f8a36e22 2021-08-26 stsp bufsize - (*n + 1), "%s\n", my_capabilities);
326 717a78d4 2022-08-16 thomas if (m < 0 || *n + m >= bufsize)
327 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
329 f8a36e22 2021-08-26 stsp *sent_my_capabilites = 1;
331 f8a36e22 2021-08-26 stsp *n = strlcat(buf, "\n", bufsize);
332 f8a36e22 2021-08-26 stsp if (*n >= bufsize)
333 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_NO_SPACE);
336 f8a36e22 2021-08-26 stsp return NULL;
339 f8a36e22 2021-08-26 stsp static const struct got_error *
340 f8a36e22 2021-08-26 stsp send_pack(int fd, struct got_pathlist_head *refs,
341 f8a36e22 2021-08-26 stsp struct got_pathlist_head *delete_refs, struct imsgbuf *ibuf)
343 f8a36e22 2021-08-26 stsp const struct got_error *err = NULL;
344 77d7d3bb 2021-09-05 stsp char buf[GOT_PKT_MAX];
345 fa8129f7 2022-03-22 thomas const unsigned char zero_id[SHA1_DIGEST_LENGTH] = { 0 };
346 f8a36e22 2021-08-26 stsp char old_hashstr[SHA1_DIGEST_STRING_LENGTH];
347 f8a36e22 2021-08-26 stsp char new_hashstr[SHA1_DIGEST_STRING_LENGTH];
348 f8a36e22 2021-08-26 stsp struct got_pathlist_head their_refs;
349 f8a36e22 2021-08-26 stsp int is_firstpkt = 1;
350 f8a36e22 2021-08-26 stsp int n, nsent = 0;
351 f8a36e22 2021-08-26 stsp int packfd = -1;
352 f8a36e22 2021-08-26 stsp char *id_str = NULL, *refname = NULL;
353 f8a36e22 2021-08-26 stsp struct got_object_id *id = NULL;
354 f8a36e22 2021-08-26 stsp char *server_capabilities = NULL, *my_capabilities = NULL;
355 f8a36e22 2021-08-26 stsp struct got_pathlist_entry *pe;
356 f8a36e22 2021-08-26 stsp int sent_my_capabilites = 0;
358 f8a36e22 2021-08-26 stsp TAILQ_INIT(&their_refs);
360 f8a36e22 2021-08-26 stsp if (TAILQ_EMPTY(refs) && TAILQ_EMPTY(delete_refs))
361 f8a36e22 2021-08-26 stsp return got_error(GOT_ERR_SEND_EMPTY);
363 f8a36e22 2021-08-26 stsp while (1) {
364 f024663d 2021-09-05 stsp err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
367 f8a36e22 2021-08-26 stsp if (n == 0)
369 f8a36e22 2021-08-26 stsp if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
370 f8a36e22 2021-08-26 stsp err = send_error(&buf[4], n - 4);
373 35add24a 2021-10-08 thomas free(id_str);
374 35add24a 2021-10-08 thomas free(refname);
375 bd3d9e54 2021-09-05 stsp err = got_gitproto_parse_refline(&id_str, &refname,
376 bd3d9e54 2021-09-05 stsp &server_capabilities, buf, n);
379 f8a36e22 2021-08-26 stsp if (is_firstpkt) {
380 e2809997 2022-11-07 thomas if (server_capabilities == NULL) {
381 e2809997 2022-11-07 thomas server_capabilities = strdup("");
382 e2809997 2022-11-07 thomas if (server_capabilities == NULL) {
383 e2809997 2022-11-07 thomas err = got_error_from_errno("strdup");
384 e2809997 2022-11-07 thomas goto done;
387 f8a36e22 2021-08-26 stsp if (chattygot && server_capabilities[0] != '\0')
388 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: server capabilities: %s\n",
389 f8a36e22 2021-08-26 stsp getprogname(), server_capabilities);
390 bd3d9e54 2021-09-05 stsp err = got_gitproto_match_capabilities(&my_capabilities,
391 bd3d9e54 2021-09-05 stsp NULL, server_capabilities, got_capabilities,
392 bd3d9e54 2021-09-05 stsp nitems(got_capabilities));
395 f8a36e22 2021-08-26 stsp if (chattygot)
396 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: my capabilities:%s\n",
397 e2809997 2022-11-07 thomas getprogname(),
398 e2809997 2022-11-07 thomas my_capabilities ? my_capabilities : "");
399 f8a36e22 2021-08-26 stsp is_firstpkt = 0;
401 f8a36e22 2021-08-26 stsp if (strstr(refname, "^{}")) {
402 f8a36e22 2021-08-26 stsp if (chattygot) {
403 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: ignoring %s\n",
404 f8a36e22 2021-08-26 stsp getprogname(), refname);
409 f8a36e22 2021-08-26 stsp id = malloc(sizeof(*id));
410 f8a36e22 2021-08-26 stsp if (id == NULL) {
411 f8a36e22 2021-08-26 stsp err = got_error_from_errno("malloc");
414 c8ae092d 2023-02-23 thomas if (!got_parse_object_id(id, id_str, GOT_HASH_SHA1)) {
415 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_BAD_OBJ_ID_STR);
418 f8a36e22 2021-08-26 stsp err = send_their_ref(ibuf, id, refname);
422 f8a36e22 2021-08-26 stsp err = got_pathlist_append(&their_refs, refname, id);
424 17c93e37 2022-07-21 thomas goto done;
426 f8a36e22 2021-08-26 stsp if (chattygot)
427 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: remote has %s %s\n",
428 f8a36e22 2021-08-26 stsp getprogname(), refname, id_str);
429 f8a36e22 2021-08-26 stsp free(id_str);
430 f8a36e22 2021-08-26 stsp id_str = NULL;
431 f8a36e22 2021-08-26 stsp refname = NULL; /* do not free; owned by their_refs */
432 f8a36e22 2021-08-26 stsp id = NULL; /* do not free; owned by their_refs */
435 f8a36e22 2021-08-26 stsp if (!TAILQ_EMPTY(delete_refs)) {
436 f8a36e22 2021-08-26 stsp if (my_capabilities == NULL ||
437 f8a36e22 2021-08-26 stsp strstr(my_capabilities, GOT_CAPA_DELETE_REFS) == NULL) {
438 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_CAPA_DELETE_REFS);
443 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(pe, delete_refs, entry) {
444 f8a36e22 2021-08-26 stsp const char *refname = pe->path;
445 f8a36e22 2021-08-26 stsp struct got_pathlist_entry *their_pe;
446 f8a36e22 2021-08-26 stsp struct got_object_id *their_id = NULL;
448 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(their_pe, &their_refs, entry) {
449 f8a36e22 2021-08-26 stsp const char *their_refname = their_pe->path;
450 f8a36e22 2021-08-26 stsp if (got_path_cmp(refname, their_refname,
451 f8a36e22 2021-08-26 stsp strlen(refname), strlen(their_refname)) == 0) {
452 f8a36e22 2021-08-26 stsp their_id = their_pe->data;
456 f8a36e22 2021-08-26 stsp if (their_id == NULL) {
457 f8a36e22 2021-08-26 stsp err = got_error_fmt(GOT_ERR_NOT_REF,
458 f8a36e22 2021-08-26 stsp "%s does not exist in remote repository",
463 f8a36e22 2021-08-26 stsp got_sha1_digest_to_str(their_id->sha1, old_hashstr,
464 f8a36e22 2021-08-26 stsp sizeof(old_hashstr));
465 f8a36e22 2021-08-26 stsp got_sha1_digest_to_str(zero_id, new_hashstr,
466 f8a36e22 2021-08-26 stsp sizeof(new_hashstr));
467 f8a36e22 2021-08-26 stsp err = describe_refchange(&n, &sent_my_capabilites,
468 f8a36e22 2021-08-26 stsp my_capabilities, buf, sizeof(buf), refname,
469 f8a36e22 2021-08-26 stsp old_hashstr, new_hashstr);
472 f024663d 2021-09-05 stsp err = got_pkt_writepkt(fd, buf, n, chattygot);
475 f8a36e22 2021-08-26 stsp if (chattygot) {
476 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: deleting %s %s\n",
477 f8a36e22 2021-08-26 stsp getprogname(), refname, old_hashstr);
482 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(pe, refs, entry) {
483 f8a36e22 2021-08-26 stsp const char *refname = pe->path;
484 f8a36e22 2021-08-26 stsp struct got_object_id *id = pe->data;
485 f8a36e22 2021-08-26 stsp struct got_object_id *their_id = NULL;
486 f8a36e22 2021-08-26 stsp struct got_pathlist_entry *their_pe;
488 f8a36e22 2021-08-26 stsp TAILQ_FOREACH(their_pe, &their_refs, entry) {
489 f8a36e22 2021-08-26 stsp const char *their_refname = their_pe->path;
490 f8a36e22 2021-08-26 stsp if (got_path_cmp(refname, their_refname,
491 f8a36e22 2021-08-26 stsp strlen(refname), strlen(their_refname)) == 0) {
492 f8a36e22 2021-08-26 stsp their_id = their_pe->data;
496 f8a36e22 2021-08-26 stsp if (their_id) {
497 f8a36e22 2021-08-26 stsp if (got_object_id_cmp(id, their_id) == 0) {
498 f8a36e22 2021-08-26 stsp if (chattygot) {
499 f8a36e22 2021-08-26 stsp fprintf(stderr,
500 f8a36e22 2021-08-26 stsp "%s: no change for %s\n",
501 f8a36e22 2021-08-26 stsp getprogname(), refname);
505 f8a36e22 2021-08-26 stsp got_sha1_digest_to_str(their_id->sha1, old_hashstr,
506 f8a36e22 2021-08-26 stsp sizeof(old_hashstr));
508 f8a36e22 2021-08-26 stsp got_sha1_digest_to_str(zero_id, old_hashstr,
509 f8a36e22 2021-08-26 stsp sizeof(old_hashstr));
511 f8a36e22 2021-08-26 stsp got_sha1_digest_to_str(id->sha1, new_hashstr,
512 f8a36e22 2021-08-26 stsp sizeof(new_hashstr));
513 f8a36e22 2021-08-26 stsp err = describe_refchange(&n, &sent_my_capabilites,
514 f8a36e22 2021-08-26 stsp my_capabilities, buf, sizeof(buf), refname,
515 f8a36e22 2021-08-26 stsp old_hashstr, new_hashstr);
518 f024663d 2021-09-05 stsp err = got_pkt_writepkt(fd, buf, n, chattygot);
521 f8a36e22 2021-08-26 stsp if (chattygot) {
522 f8a36e22 2021-08-26 stsp if (their_id) {
523 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: updating %s %s -> %s\n",
524 f8a36e22 2021-08-26 stsp getprogname(), refname, old_hashstr,
525 f8a36e22 2021-08-26 stsp new_hashstr);
527 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: creating %s %s\n",
528 f8a36e22 2021-08-26 stsp getprogname(), refname, new_hashstr);
533 f024663d 2021-09-05 stsp err = got_pkt_flushpkt(fd, chattygot);
537 f8a36e22 2021-08-26 stsp err = send_pack_request(ibuf);
541 f8a36e22 2021-08-26 stsp err = recv_packfd(&packfd, ibuf);
545 27b75514 2021-08-28 stsp if (packfd != -1) {
546 27b75514 2021-08-28 stsp err = send_pack_file(fd, packfd, ibuf);
551 f024663d 2021-09-05 stsp err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
554 f8a36e22 2021-08-26 stsp if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
555 f8a36e22 2021-08-26 stsp err = send_error(&buf[4], n - 4);
557 f8a36e22 2021-08-26 stsp } else if (n < 10 || strncmp(buf, "unpack ok\n", 10) != 0) {
558 f8a36e22 2021-08-26 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
559 f8a36e22 2021-08-26 stsp "unexpected message from server");
563 f8a36e22 2021-08-26 stsp while (nsent > 0) {
564 f024663d 2021-09-05 stsp err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
567 f8a36e22 2021-08-26 stsp if (n < 3) {
568 f8a36e22 2021-08-26 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
569 f8a36e22 2021-08-26 stsp "unexpected message from server");
571 3efd8e31 2022-10-23 thomas } else if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
572 3efd8e31 2022-10-23 thomas err = send_error(&buf[4], n - 4);
573 3efd8e31 2022-10-23 thomas goto done;
574 f8a36e22 2021-08-26 stsp } else if (strncmp(buf, "ok ", 3) == 0) {
575 f8a36e22 2021-08-26 stsp err = send_ref_status(ibuf, buf + 3, 1,
576 abc59930 2021-09-05 naddy refs, delete_refs);
579 f8a36e22 2021-08-26 stsp } else if (strncmp(buf, "ng ", 3) == 0) {
580 f8a36e22 2021-08-26 stsp err = send_ref_status(ibuf, buf + 3, 0,
581 f8a36e22 2021-08-26 stsp refs, delete_refs);
585 f8a36e22 2021-08-26 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
586 f8a36e22 2021-08-26 stsp "unexpected message from server");
592 f8a36e22 2021-08-26 stsp err = send_done(ibuf);
594 21c2d8be 2023-01-10 thomas got_pathlist_free(&their_refs, GOT_PATHLIST_FREE_ALL);
595 f8a36e22 2021-08-26 stsp free(id_str);
597 f8a36e22 2021-08-26 stsp free(refname);
598 f8a36e22 2021-08-26 stsp free(server_capabilities);
599 f8a36e22 2021-08-26 stsp return err;
603 f8a36e22 2021-08-26 stsp main(int argc, char **argv)
605 f8a36e22 2021-08-26 stsp const struct got_error *err = NULL;
606 d639f28b 2023-01-10 thomas int sendfd = -1;
607 f8a36e22 2021-08-26 stsp struct imsgbuf ibuf;
608 f8a36e22 2021-08-26 stsp struct imsg imsg;
609 f8a36e22 2021-08-26 stsp struct got_pathlist_head refs;
610 f8a36e22 2021-08-26 stsp struct got_pathlist_head delete_refs;
611 f8a36e22 2021-08-26 stsp struct got_imsg_send_request send_req;
612 f8a36e22 2021-08-26 stsp struct got_imsg_send_ref href;
613 01bb5a15 2021-09-25 thomas.ad size_t datalen, i;
615 f8a36e22 2021-08-26 stsp static int attached;
616 f8a36e22 2021-08-26 stsp while (!attached)
620 f8a36e22 2021-08-26 stsp TAILQ_INIT(&refs);
621 f8a36e22 2021-08-26 stsp TAILQ_INIT(&delete_refs);
623 f8a36e22 2021-08-26 stsp imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
624 f8a36e22 2021-08-26 stsp #ifndef PROFILE
625 f8a36e22 2021-08-26 stsp /* revoke access to most system calls */
626 f8a36e22 2021-08-26 stsp if (pledge("stdio recvfd", NULL) == -1) {
627 f8a36e22 2021-08-26 stsp err = got_error_from_errno("pledge");
628 f8a36e22 2021-08-26 stsp got_privsep_send_error(&ibuf, err);
632 97799ccd 2022-02-06 thomas /* revoke fs access */
633 97799ccd 2022-02-06 thomas if (landlock_no_fs() == -1) {
634 97799ccd 2022-02-06 thomas err = got_error_from_errno("landlock_no_fs");
635 97799ccd 2022-02-06 thomas got_privsep_send_error(&ibuf, err);
636 97799ccd 2022-02-06 thomas return 1;
638 5d120ea8 2022-06-23 op if (cap_enter() == -1) {
639 5d120ea8 2022-06-23 op err = got_error_from_errno("cap_enter");
640 5d120ea8 2022-06-23 op got_privsep_send_error(&ibuf, err);
644 f8a36e22 2021-08-26 stsp if ((err = got_privsep_recv_imsg(&imsg, &ibuf, 0)) != 0) {
645 f8a36e22 2021-08-26 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
646 f8a36e22 2021-08-26 stsp err = NULL;
649 f8a36e22 2021-08-26 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
651 f8a36e22 2021-08-26 stsp if (imsg.hdr.type != GOT_IMSG_SEND_REQUEST) {
652 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
655 f8a36e22 2021-08-26 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
656 f8a36e22 2021-08-26 stsp if (datalen < sizeof(send_req)) {
657 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
660 f8a36e22 2021-08-26 stsp memcpy(&send_req, imsg.data, sizeof(send_req));
661 f8a36e22 2021-08-26 stsp sendfd = imsg.fd;
662 f8a36e22 2021-08-26 stsp imsg_free(&imsg);
664 f8a36e22 2021-08-26 stsp if (send_req.verbosity > 0)
665 f8a36e22 2021-08-26 stsp chattygot += send_req.verbosity;
667 f8a36e22 2021-08-26 stsp for (i = 0; i < send_req.nrefs; i++) {
668 f8a36e22 2021-08-26 stsp struct got_object_id *id;
669 f8a36e22 2021-08-26 stsp char *refname;
671 f8a36e22 2021-08-26 stsp if ((err = got_privsep_recv_imsg(&imsg, &ibuf, 0)) != 0) {
672 f8a36e22 2021-08-26 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
673 f8a36e22 2021-08-26 stsp err = NULL;
676 f8a36e22 2021-08-26 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
678 f8a36e22 2021-08-26 stsp if (imsg.hdr.type != GOT_IMSG_SEND_REF) {
679 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
682 f8a36e22 2021-08-26 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
683 f8a36e22 2021-08-26 stsp if (datalen < sizeof(href)) {
684 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
687 f8a36e22 2021-08-26 stsp memcpy(&href, imsg.data, sizeof(href));
688 f8a36e22 2021-08-26 stsp if (datalen - sizeof(href) < href.name_len) {
689 f8a36e22 2021-08-26 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
692 f8a36e22 2021-08-26 stsp refname = malloc(href.name_len + 1);
693 f8a36e22 2021-08-26 stsp if (refname == NULL) {
694 f8a36e22 2021-08-26 stsp err = got_error_from_errno("malloc");
697 f8a36e22 2021-08-26 stsp memcpy(refname, imsg.data + sizeof(href), href.name_len);
698 f8a36e22 2021-08-26 stsp refname[href.name_len] = '\0';
701 f8a36e22 2021-08-26 stsp * Prevent sending of references that won't make any
702 f8a36e22 2021-08-26 stsp * sense outside the local repository's context.
704 f8a36e22 2021-08-26 stsp if (strncmp(refname, "refs/got/", 9) == 0 ||
705 f8a36e22 2021-08-26 stsp strncmp(refname, "refs/remotes/", 13) == 0) {
706 f8a36e22 2021-08-26 stsp err = got_error_fmt(GOT_ERR_SEND_BAD_REF,
707 f8a36e22 2021-08-26 stsp "%s", refname);
711 f8a36e22 2021-08-26 stsp id = malloc(sizeof(*id));
712 f8a36e22 2021-08-26 stsp if (id == NULL) {
713 f8a36e22 2021-08-26 stsp free(refname);
714 f8a36e22 2021-08-26 stsp err = got_error_from_errno("malloc");
717 ea58e974 2023-02-03 thomas memcpy(id, &href.id, sizeof(*id));
718 f8a36e22 2021-08-26 stsp if (href.delete)
719 f8a36e22 2021-08-26 stsp err = got_pathlist_append(&delete_refs, refname, id);
721 f8a36e22 2021-08-26 stsp err = got_pathlist_append(&refs, refname, id);
723 f8a36e22 2021-08-26 stsp free(refname);
728 f8a36e22 2021-08-26 stsp imsg_free(&imsg);
731 f8a36e22 2021-08-26 stsp err = send_pack(sendfd, &refs, &delete_refs, &ibuf);
733 21c2d8be 2023-01-10 thomas got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
734 21c2d8be 2023-01-10 thomas got_pathlist_free(&delete_refs, GOT_PATHLIST_FREE_ALL);
735 f8a36e22 2021-08-26 stsp if (sendfd != -1 && close(sendfd) == -1 && err == NULL)
736 f8a36e22 2021-08-26 stsp err = got_error_from_errno("close");
737 f8a36e22 2021-08-26 stsp if (err != NULL && err->code != GOT_ERR_CANCELLED) {
738 f8a36e22 2021-08-26 stsp fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
739 f8a36e22 2021-08-26 stsp got_privsep_send_error(&ibuf, err);
