2 93658fb9 2020-03-18 stsp * Copyright (c) 2019 Ori Bernstein <ori@openbsd.org>
4 93658fb9 2020-03-18 stsp * Permission to use, copy, modify, and distribute this software for any
5 93658fb9 2020-03-18 stsp * purpose with or without fee is hereby granted, provided that the above
6 93658fb9 2020-03-18 stsp * copyright notice and this permission notice appear in all copies.
8 93658fb9 2020-03-18 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 93658fb9 2020-03-18 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 93658fb9 2020-03-18 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 93658fb9 2020-03-18 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 93658fb9 2020-03-18 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 93658fb9 2020-03-18 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 93658fb9 2020-03-18 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 d9b944c7 2023-03-08 thomas #include "got_compat.h"
19 93658fb9 2020-03-18 stsp #include <sys/types.h>
20 8b925c6c 2022-07-16 thomas #include <sys/queue.h>
21 93658fb9 2020-03-18 stsp #include <sys/uio.h>
22 93658fb9 2020-03-18 stsp #include <sys/time.h>
23 93658fb9 2020-03-18 stsp #include <sys/stat.h>
25 93658fb9 2020-03-18 stsp #include <stdint.h>
26 93658fb9 2020-03-18 stsp #include <errno.h>
27 93658fb9 2020-03-18 stsp #include <limits.h>
28 93658fb9 2020-03-18 stsp #include <signal.h>
29 93658fb9 2020-03-18 stsp #include <stdio.h>
30 93658fb9 2020-03-18 stsp #include <stdlib.h>
31 93658fb9 2020-03-18 stsp #include <string.h>
32 93658fb9 2020-03-18 stsp #include <ctype.h>
33 93658fb9 2020-03-18 stsp #include <fcntl.h>
34 81a12da5 2020-09-09 naddy #include <unistd.h>
35 93658fb9 2020-03-18 stsp #include <zlib.h>
36 93658fb9 2020-03-18 stsp #include <err.h>
38 93658fb9 2020-03-18 stsp #include "got_error.h"
39 93658fb9 2020-03-18 stsp #include "got_object.h"
40 abe0f35f 2020-03-18 stsp #include "got_path.h"
41 8a29a085 2020-03-18 stsp #include "got_version.h"
42 f1c6967f 2020-03-19 stsp #include "got_fetch.h"
43 659e7fbd 2020-03-20 stsp #include "got_reference.h"
45 be288a59 2023-02-23 thomas #include "got_lib_hash.h"
46 93658fb9 2020-03-18 stsp #include "got_lib_delta.h"
47 93658fb9 2020-03-18 stsp #include "got_lib_object.h"
48 93658fb9 2020-03-18 stsp #include "got_lib_object_parse.h"
49 93658fb9 2020-03-18 stsp #include "got_lib_privsep.h"
50 0872c0b0 2020-03-18 stsp #include "got_lib_pack.h"
51 f024663d 2021-09-05 stsp #include "got_lib_pkt.h"
52 bd3d9e54 2021-09-05 stsp #include "got_lib_gitproto.h"
53 b637eb2e 2022-02-23 thomas #include "got_lib_ratelimit.h"
55 9439b99a 2022-10-30 thomas #ifndef MIN
56 9439b99a 2022-10-30 thomas #define MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
59 8a29a085 2020-03-18 stsp #ifndef nitems
60 8a29a085 2020-03-18 stsp #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
63 93658fb9 2020-03-18 stsp struct got_object *indexed;
64 858b0dfb 2020-03-20 stsp static int chattygot;
66 bd3d9e54 2021-09-05 stsp static const struct got_capability got_capabilities[] = {
67 bd3d9e54 2021-09-05 stsp { GOT_CAPA_AGENT, "got/" GOT_VERSION_STR },
68 bd3d9e54 2021-09-05 stsp { GOT_CAPA_OFS_DELTA, NULL },
69 bd3d9e54 2021-09-05 stsp { GOT_CAPA_SIDE_BAND_64K, NULL },
73 7848a0e1 2020-03-19 stsp match_remote_ref(struct got_pathlist_head *have_refs,
74 9d0a7ee3 2023-02-07 thomas struct got_object_id *my_id, const char *refname)
76 33501562 2020-03-18 stsp struct got_pathlist_entry *pe;
78 7848a0e1 2020-03-19 stsp /* XXX zero-hash signifies we don't have this ref;
79 7848a0e1 2020-03-19 stsp * we should use a flag instead */
80 7848a0e1 2020-03-19 stsp memset(my_id, 0, sizeof(*my_id));
82 33501562 2020-03-18 stsp TAILQ_FOREACH(pe, have_refs, entry) {
83 7848a0e1 2020-03-19 stsp struct got_object_id *id = pe->data;
84 b6b86fd1 2022-08-30 thomas if (strcmp(pe->path, refname) == 0) {
85 7848a0e1 2020-03-19 stsp memcpy(my_id, id, sizeof(*my_id));
92 659e7fbd 2020-03-20 stsp match_branch(const char *branch, const char *wanted_branch)
94 659e7fbd 2020-03-20 stsp if (strncmp(branch, "refs/heads/", 11) != 0)
97 659e7fbd 2020-03-20 stsp if (strncmp(wanted_branch, "refs/heads/", 11) == 0)
98 659e7fbd 2020-03-20 stsp wanted_branch += 11;
100 659e7fbd 2020-03-20 stsp return (strcmp(branch + 11, wanted_branch) == 0);
104 0e4002ca 2020-03-21 stsp match_wanted_ref(const char *refname, const char *wanted_ref)
106 0e4002ca 2020-03-21 stsp if (strncmp(refname, "refs/", 5) != 0)
108 0e4002ca 2020-03-21 stsp refname += 5;
111 0e4002ca 2020-03-21 stsp * Prevent fetching of references that won't make any
112 0e4002ca 2020-03-21 stsp * sense outside of the remote repository's context.
114 0e4002ca 2020-03-21 stsp if (strncmp(refname, "got/", 4) == 0)
116 0e4002ca 2020-03-21 stsp if (strncmp(refname, "remotes/", 8) == 0)
119 0e4002ca 2020-03-21 stsp if (strncmp(wanted_ref, "refs/", 5) == 0)
120 0e4002ca 2020-03-21 stsp wanted_ref += 5;
122 0e4002ca 2020-03-21 stsp /* Allow prefix match. */
123 0e4002ca 2020-03-21 stsp if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
126 0e4002ca 2020-03-21 stsp /* Allow exact match. */
127 0e4002ca 2020-03-21 stsp return (strcmp(refname, wanted_ref) == 0);
130 abe0f35f 2020-03-18 stsp static const struct got_error *
131 e70bf110 2020-03-22 stsp send_fetch_server_progress(struct imsgbuf *ibuf, const char *msg, size_t msglen)
133 e70bf110 2020-03-22 stsp if (msglen > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
134 e70bf110 2020-03-22 stsp return got_error(GOT_ERR_NO_SPACE);
136 e70bf110 2020-03-22 stsp if (msglen == 0)
137 e70bf110 2020-03-22 stsp return NULL;
139 e70bf110 2020-03-22 stsp if (imsg_compose(ibuf, GOT_IMSG_FETCH_SERVER_PROGRESS, 0, 0, -1,
140 e70bf110 2020-03-22 stsp msg, msglen) == -1)
141 e70bf110 2020-03-22 stsp return got_error_from_errno(
142 e70bf110 2020-03-22 stsp "imsg_compose FETCH_SERVER_PROGRESS");
144 e70bf110 2020-03-22 stsp return got_privsep_flush_imsg(ibuf);
147 531c3985 2020-03-18 stsp static const struct got_error *
148 b637eb2e 2022-02-23 thomas send_fetch_download_progress(struct imsgbuf *ibuf, off_t bytes,
149 b637eb2e 2022-02-23 thomas struct got_ratelimit *rl)
151 b637eb2e 2022-02-23 thomas const struct got_error *err;
152 b637eb2e 2022-02-23 thomas int elapsed = 0;
154 b637eb2e 2022-02-23 thomas if (rl) {
155 b637eb2e 2022-02-23 thomas err = got_ratelimit_check(&elapsed, rl);
156 b637eb2e 2022-02-23 thomas if (err || !elapsed)
157 b637eb2e 2022-02-23 thomas return err;
160 e70bf110 2020-03-22 stsp if (imsg_compose(ibuf, GOT_IMSG_FETCH_DOWNLOAD_PROGRESS, 0, 0, -1,
161 e70bf110 2020-03-22 stsp &bytes, sizeof(bytes)) == -1)
162 e70bf110 2020-03-22 stsp return got_error_from_errno(
163 e70bf110 2020-03-22 stsp "imsg_compose FETCH_DOWNLOAD_PROGRESS");
165 e70bf110 2020-03-22 stsp return got_privsep_flush_imsg(ibuf);
168 e70bf110 2020-03-22 stsp static const struct got_error *
169 1d72a2a0 2020-03-24 stsp send_fetch_done(struct imsgbuf *ibuf, uint8_t *pack_sha1)
171 e70bf110 2020-03-22 stsp if (imsg_compose(ibuf, GOT_IMSG_FETCH_DONE, 0, 0, -1,
172 1d72a2a0 2020-03-24 stsp pack_sha1, SHA1_DIGEST_LENGTH) == -1)
173 e70bf110 2020-03-22 stsp return got_error_from_errno("imsg_compose FETCH");
174 e70bf110 2020-03-22 stsp return got_privsep_flush_imsg(ibuf);
177 e70bf110 2020-03-22 stsp static const struct got_error *
178 531c3985 2020-03-18 stsp fetch_progress(struct imsgbuf *ibuf, const char *buf, size_t len)
182 531c3985 2020-03-18 stsp if (len == 0)
183 531c3985 2020-03-18 stsp return NULL;
186 531c3985 2020-03-18 stsp * Truncate messages which exceed the maximum imsg payload size.
187 531c3985 2020-03-18 stsp * Server may send up to 64k.
189 531c3985 2020-03-18 stsp if (len > MAX_IMSGSIZE - IMSG_HEADER_SIZE)
190 531c3985 2020-03-18 stsp len = MAX_IMSGSIZE - IMSG_HEADER_SIZE;
192 531c3985 2020-03-18 stsp /* Only allow printable ASCII. */
193 531c3985 2020-03-18 stsp for (i = 0; i < len; i++) {
194 531c3985 2020-03-18 stsp if (isprint((unsigned char)buf[i]) ||
195 531c3985 2020-03-18 stsp isspace((unsigned char)buf[i]))
197 531c3985 2020-03-18 stsp return got_error_msg(GOT_ERR_BAD_PACKET,
198 531c3985 2020-03-18 stsp "non-printable progress message received from server");
201 e70bf110 2020-03-22 stsp return send_fetch_server_progress(ibuf, buf, len);
204 8a29a085 2020-03-18 stsp static const struct got_error *
205 531c3985 2020-03-18 stsp fetch_error(const char *buf, size_t len)
207 531c3985 2020-03-18 stsp static char msg[1024];
210 531c3985 2020-03-18 stsp for (i = 0; i < len && i < sizeof(msg) - 1; i++) {
211 6771d425 2022-11-17 thomas if (!isprint((unsigned char)buf[i]))
212 531c3985 2020-03-18 stsp return got_error_msg(GOT_ERR_BAD_PACKET,
213 531c3985 2020-03-18 stsp "non-printable error message received from server");
214 531c3985 2020-03-18 stsp msg[i] = buf[i];
216 531c3985 2020-03-18 stsp msg[i] = '\0';
217 531c3985 2020-03-18 stsp return got_error_msg(GOT_ERR_FETCH_FAILED, msg);
220 531c3985 2020-03-18 stsp static const struct got_error *
221 e70bf110 2020-03-22 stsp send_fetch_symrefs(struct imsgbuf *ibuf, struct got_pathlist_head *symrefs)
223 e70bf110 2020-03-22 stsp struct ibuf *wbuf;
224 e70bf110 2020-03-22 stsp size_t len, nsymrefs = 0;
225 e70bf110 2020-03-22 stsp struct got_pathlist_entry *pe;
227 e70bf110 2020-03-22 stsp len = sizeof(struct got_imsg_fetch_symrefs);
228 e70bf110 2020-03-22 stsp TAILQ_FOREACH(pe, symrefs, entry) {
229 e70bf110 2020-03-22 stsp const char *target = pe->data;
230 e70bf110 2020-03-22 stsp len += sizeof(struct got_imsg_fetch_symref) +
231 e70bf110 2020-03-22 stsp pe->path_len + strlen(target);
232 e70bf110 2020-03-22 stsp nsymrefs++;
235 e70bf110 2020-03-22 stsp if (len >= MAX_IMSGSIZE - IMSG_HEADER_SIZE)
236 e70bf110 2020-03-22 stsp return got_error(GOT_ERR_NO_SPACE);
238 e70bf110 2020-03-22 stsp wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_SYMREFS, 0, 0, len);
239 e70bf110 2020-03-22 stsp if (wbuf == NULL)
240 e70bf110 2020-03-22 stsp return got_error_from_errno("imsg_create FETCH_SYMREFS");
242 e70bf110 2020-03-22 stsp /* Keep in sync with struct got_imsg_fetch_symrefs definition! */
243 e9f1a409 2022-05-19 thomas if (imsg_add(wbuf, &nsymrefs, sizeof(nsymrefs)) == -1)
244 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add FETCH_SYMREFS");
246 e70bf110 2020-03-22 stsp TAILQ_FOREACH(pe, symrefs, entry) {
247 e70bf110 2020-03-22 stsp const char *name = pe->path;
248 e70bf110 2020-03-22 stsp size_t name_len = pe->path_len;
249 e70bf110 2020-03-22 stsp const char *target = pe->data;
250 e70bf110 2020-03-22 stsp size_t target_len = strlen(target);
252 e70bf110 2020-03-22 stsp /* Keep in sync with struct got_imsg_fetch_symref definition! */
253 e9f1a409 2022-05-19 thomas if (imsg_add(wbuf, &name_len, sizeof(name_len)) == -1)
254 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add FETCH_SYMREFS");
255 e9f1a409 2022-05-19 thomas if (imsg_add(wbuf, &target_len, sizeof(target_len)) == -1)
256 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add FETCH_SYMREFS");
257 e9f1a409 2022-05-19 thomas if (imsg_add(wbuf, name, name_len) == -1)
258 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add FETCH_SYMREFS");
259 e9f1a409 2022-05-19 thomas if (imsg_add(wbuf, target, target_len) == -1)
260 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add FETCH_SYMREFS");
263 e70bf110 2020-03-22 stsp wbuf->fd = -1;
264 e70bf110 2020-03-22 stsp imsg_close(ibuf, wbuf);
265 e70bf110 2020-03-22 stsp return got_privsep_flush_imsg(ibuf);
268 e70bf110 2020-03-22 stsp static const struct got_error *
269 e70bf110 2020-03-22 stsp send_fetch_ref(struct imsgbuf *ibuf, struct got_object_id *refid,
270 e70bf110 2020-03-22 stsp const char *refname)
272 e70bf110 2020-03-22 stsp struct ibuf *wbuf;
273 e70bf110 2020-03-22 stsp size_t len, reflen = strlen(refname);
275 e70bf110 2020-03-22 stsp len = sizeof(struct got_imsg_fetch_ref) + reflen;
276 e70bf110 2020-03-22 stsp if (len >= MAX_IMSGSIZE - IMSG_HEADER_SIZE)
277 e70bf110 2020-03-22 stsp return got_error(GOT_ERR_NO_SPACE);
279 e70bf110 2020-03-22 stsp wbuf = imsg_create(ibuf, GOT_IMSG_FETCH_REF, 0, 0, len);
280 e70bf110 2020-03-22 stsp if (wbuf == NULL)
281 e70bf110 2020-03-22 stsp return got_error_from_errno("imsg_create FETCH_REF");
283 e70bf110 2020-03-22 stsp /* Keep in sync with struct got_imsg_fetch_ref definition! */
284 9228a15c 2023-02-03 thomas if (imsg_add(wbuf, refid, sizeof(*refid)) == -1)
285 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add FETCH_REF");
286 e9f1a409 2022-05-19 thomas if (imsg_add(wbuf, refname, reflen) == -1)
287 e9f1a409 2022-05-19 thomas return got_error_from_errno("imsg_add FETCH_REF");
289 e70bf110 2020-03-22 stsp wbuf->fd = -1;
290 e70bf110 2020-03-22 stsp imsg_close(ibuf, wbuf);
291 e70bf110 2020-03-22 stsp return got_privsep_flush_imsg(ibuf);
294 9d0a7ee3 2023-02-07 thomas static const struct got_error *
295 9d0a7ee3 2023-02-07 thomas fetch_ref(struct imsgbuf *ibuf, struct got_pathlist_head *have_refs,
296 9d0a7ee3 2023-02-07 thomas struct got_object_id *have, struct got_object_id *want,
297 9d0a7ee3 2023-02-07 thomas const char *refname, const char *id_str)
299 9d0a7ee3 2023-02-07 thomas const struct got_error *err;
300 9d0a7ee3 2023-02-07 thomas char *theirs = NULL, *mine = NULL;
302 c8ae092d 2023-02-23 thomas if (!got_parse_object_id(want, id_str, GOT_HASH_SHA1)) {
303 9d0a7ee3 2023-02-07 thomas err = got_error(GOT_ERR_BAD_OBJ_ID_STR);
304 9d0a7ee3 2023-02-07 thomas goto done;
307 9d0a7ee3 2023-02-07 thomas match_remote_ref(have_refs, have, refname);
308 9d0a7ee3 2023-02-07 thomas err = send_fetch_ref(ibuf, want, refname);
310 9d0a7ee3 2023-02-07 thomas goto done;
312 9d0a7ee3 2023-02-07 thomas if (chattygot)
313 9d0a7ee3 2023-02-07 thomas fprintf(stderr, "%s: %s will be fetched\n",
314 9d0a7ee3 2023-02-07 thomas getprogname(), refname);
315 9d0a7ee3 2023-02-07 thomas if (chattygot > 1) {
316 9d0a7ee3 2023-02-07 thomas err = got_object_id_str(&theirs, want);
318 9d0a7ee3 2023-02-07 thomas goto done;
319 9d0a7ee3 2023-02-07 thomas err = got_object_id_str(&mine, have);
321 9d0a7ee3 2023-02-07 thomas goto done;
322 9d0a7ee3 2023-02-07 thomas fprintf(stderr, "%s: remote: %s\n%s: local: %s\n",
323 9d0a7ee3 2023-02-07 thomas getprogname(), theirs, getprogname(), mine);
326 9d0a7ee3 2023-02-07 thomas free(theirs);
327 9d0a7ee3 2023-02-07 thomas free(mine);
328 9d0a7ee3 2023-02-07 thomas return err;
331 e70bf110 2020-03-22 stsp static const struct got_error *
332 1d72a2a0 2020-03-24 stsp fetch_pack(int fd, int packfd, uint8_t *pack_sha1,
333 659e7fbd 2020-03-20 stsp struct got_pathlist_head *have_refs, int fetch_all_branches,
334 0e4002ca 2020-03-21 stsp struct got_pathlist_head *wanted_branches,
335 0e4002ca 2020-03-21 stsp struct got_pathlist_head *wanted_refs, int list_refs_only,
336 7abf1863 2023-02-20 thomas const char *worktree_branch, const char *remote_head,
337 7abf1863 2023-02-20 thomas int no_head, struct imsgbuf *ibuf)
339 9ff10419 2020-03-18 stsp const struct got_error *err = NULL;
340 77d7d3bb 2021-09-05 stsp char buf[GOT_PKT_MAX];
341 93658fb9 2020-03-18 stsp char hashstr[SHA1_DIGEST_STRING_LENGTH];
342 93658fb9 2020-03-18 stsp struct got_object_id *have, *want;
343 8a29a085 2020-03-18 stsp int is_firstpkt = 1, nref = 0, refsz = 16;
344 7848a0e1 2020-03-19 stsp int i, n, nwant = 0, nhave = 0, acked = 0;
345 5672d305 2020-03-18 stsp off_t packsz = 0, last_reported_packsz = 0;
346 7917d6d5 2023-02-17 thomas char *id_str = NULL, *default_id_str = NULL, *refname = NULL;
347 00cd0e0a 2020-03-18 stsp char *server_capabilities = NULL, *my_capabilities = NULL;
348 659e7fbd 2020-03-20 stsp const char *default_branch = NULL;
349 abe0f35f 2020-03-18 stsp struct got_pathlist_head symrefs;
350 abe0f35f 2020-03-18 stsp struct got_pathlist_entry *pe;
351 406106ee 2020-03-20 stsp int sent_my_capabilites = 0, have_sidebands = 0;
352 7917d6d5 2023-02-17 thomas int found_branch = 0;
353 b16893ba 2023-02-24 thomas struct got_hash ctx;
354 dc671e91 2020-03-24 stsp uint8_t sha1_buf[SHA1_DIGEST_LENGTH];
355 dc671e91 2020-03-24 stsp size_t sha1_buf_len = 0;
357 b637eb2e 2022-02-23 thomas struct got_ratelimit rl;
359 abe0f35f 2020-03-18 stsp TAILQ_INIT(&symrefs);
360 b16893ba 2023-02-24 thomas got_hash_init(&ctx, GOT_HASH_SHA1);
361 b637eb2e 2022-02-23 thomas got_ratelimit_init(&rl, 0, 500);
363 93658fb9 2020-03-18 stsp have = malloc(refsz * sizeof(have[0]));
364 9ff10419 2020-03-18 stsp if (have == NULL)
365 9ff10419 2020-03-18 stsp return got_error_from_errno("malloc");
366 93658fb9 2020-03-18 stsp want = malloc(refsz * sizeof(want[0]));
367 9ff10419 2020-03-18 stsp if (want == NULL) {
368 9ff10419 2020-03-18 stsp err = got_error_from_errno("malloc");
371 9ff10419 2020-03-18 stsp while (1) {
372 f024663d 2021-09-05 stsp err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
375 9ff10419 2020-03-18 stsp if (n == 0)
377 a6f88e33 2020-03-18 stsp if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
378 531c3985 2020-03-18 stsp err = fetch_error(&buf[4], n - 4);
381 35add24a 2021-10-08 thomas free(id_str);
382 35add24a 2021-10-08 thomas free(refname);
383 bd3d9e54 2021-09-05 stsp err = got_gitproto_parse_refline(&id_str, &refname,
384 bd3d9e54 2021-09-05 stsp &server_capabilities, buf, n);
388 9d0a7ee3 2023-02-07 thomas if (refsz == nref + 1) {
389 84073f62 2023-02-07 thomas struct got_object_id *h, *w;
391 9d0a7ee3 2023-02-07 thomas refsz *= 2;
392 84073f62 2023-02-07 thomas h = reallocarray(have, refsz, sizeof(have[0]));
393 84073f62 2023-02-07 thomas if (h == NULL) {
394 9d0a7ee3 2023-02-07 thomas err = got_error_from_errno("reallocarray");
395 9d0a7ee3 2023-02-07 thomas goto done;
397 84073f62 2023-02-07 thomas have = h;
398 84073f62 2023-02-07 thomas w = reallocarray(want, refsz, sizeof(want[0]));
399 84073f62 2023-02-07 thomas if (w == NULL) {
400 9d0a7ee3 2023-02-07 thomas err = got_error_from_errno("reallocarray");
401 9d0a7ee3 2023-02-07 thomas goto done;
403 84073f62 2023-02-07 thomas want = w;
406 8a29a085 2020-03-18 stsp if (is_firstpkt) {
407 858b0dfb 2020-03-20 stsp if (chattygot && server_capabilities[0] != '\0')
408 858b0dfb 2020-03-20 stsp fprintf(stderr, "%s: server capabilities: %s\n",
409 858b0dfb 2020-03-20 stsp getprogname(), server_capabilities);
410 bd3d9e54 2021-09-05 stsp err = got_gitproto_match_capabilities(&my_capabilities,
411 bd3d9e54 2021-09-05 stsp &symrefs, server_capabilities,
412 bd3d9e54 2021-09-05 stsp got_capabilities, nitems(got_capabilities));
415 858b0dfb 2020-03-20 stsp if (chattygot)
416 2690194b 2020-03-21 stsp fprintf(stderr, "%s: my capabilities:%s\n",
417 a90356f7 2021-08-26 stsp getprogname(), my_capabilities != NULL ?
418 a90356f7 2021-08-26 stsp my_capabilities : "");
419 e70bf110 2020-03-22 stsp err = send_fetch_symrefs(ibuf, &symrefs);
422 7848a0e1 2020-03-19 stsp is_firstpkt = 0;
423 659e7fbd 2020-03-20 stsp if (!fetch_all_branches) {
424 659e7fbd 2020-03-20 stsp TAILQ_FOREACH(pe, &symrefs, entry) {
425 659e7fbd 2020-03-20 stsp const char *name = pe->path;
426 659e7fbd 2020-03-20 stsp const char *symref_target = pe->data;
427 659e7fbd 2020-03-20 stsp if (strcmp(name, GOT_REF_HEAD) != 0)
429 659e7fbd 2020-03-20 stsp default_branch = symref_target;
433 c22ed3f5 2022-11-08 thomas if (default_branch)
434 c22ed3f5 2022-11-08 thomas continue;
436 2690194b 2020-03-21 stsp if (strstr(refname, "^{}")) {
437 2690194b 2020-03-21 stsp if (chattygot) {
438 2690194b 2020-03-21 stsp fprintf(stderr, "%s: ignoring %s\n",
439 2690194b 2020-03-21 stsp getprogname(), refname);
443 7917d6d5 2023-02-17 thomas if (default_branch && default_id_str == NULL &&
444 7917d6d5 2023-02-17 thomas strcmp(refname, default_branch) == 0) {
445 7917d6d5 2023-02-17 thomas default_id_str = strdup(id_str);
446 7917d6d5 2023-02-17 thomas if (default_id_str == NULL) {
447 7917d6d5 2023-02-17 thomas err = got_error_from_errno("strdup");
452 9d0a7ee3 2023-02-07 thomas if (list_refs_only || strncmp(refname, "refs/tags/", 10) == 0) {
453 9d0a7ee3 2023-02-07 thomas err = fetch_ref(ibuf, have_refs, &have[nref],
454 9d0a7ee3 2023-02-07 thomas &want[nref], refname, id_str);
458 9d0a7ee3 2023-02-07 thomas } else if (strncmp(refname, "refs/heads/", 11) == 0) {
459 9d0a7ee3 2023-02-07 thomas if (fetch_all_branches) {
460 9d0a7ee3 2023-02-07 thomas err = fetch_ref(ibuf, have_refs, &have[nref],
461 9d0a7ee3 2023-02-07 thomas &want[nref], refname, id_str);
463 9d0a7ee3 2023-02-07 thomas goto done;
465 7917d6d5 2023-02-17 thomas found_branch = 1;
466 9d0a7ee3 2023-02-07 thomas continue;
468 9d0a7ee3 2023-02-07 thomas TAILQ_FOREACH(pe, wanted_branches, entry) {
469 9d0a7ee3 2023-02-07 thomas if (match_branch(refname, pe->path))
472 9d0a7ee3 2023-02-07 thomas if (pe != NULL || (worktree_branch != NULL &&
473 9d0a7ee3 2023-02-07 thomas match_branch(refname, worktree_branch))) {
474 9d0a7ee3 2023-02-07 thomas err = fetch_ref(ibuf, have_refs, &have[nref],
475 9d0a7ee3 2023-02-07 thomas &want[nref], refname, id_str);
477 9d0a7ee3 2023-02-07 thomas goto done;
479 7917d6d5 2023-02-17 thomas found_branch = 1;
480 9d0a7ee3 2023-02-07 thomas } else if (chattygot) {
481 9d0a7ee3 2023-02-07 thomas fprintf(stderr, "%s: ignoring %s\n",
482 9d0a7ee3 2023-02-07 thomas getprogname(), refname);
485 9d0a7ee3 2023-02-07 thomas TAILQ_FOREACH(pe, wanted_refs, entry) {
486 9d0a7ee3 2023-02-07 thomas if (match_wanted_ref(refname, pe->path))
489 9d0a7ee3 2023-02-07 thomas if (pe != NULL) {
490 9d0a7ee3 2023-02-07 thomas err = fetch_ref(ibuf, have_refs, &have[nref],
491 9d0a7ee3 2023-02-07 thomas &want[nref], refname, id_str);
493 9d0a7ee3 2023-02-07 thomas goto done;
495 9d0a7ee3 2023-02-07 thomas } else if (chattygot) {
496 9d0a7ee3 2023-02-07 thomas fprintf(stderr, "%s: ignoring %s\n",
497 9d0a7ee3 2023-02-07 thomas getprogname(), refname);
502 41b0de12 2020-03-21 stsp if (list_refs_only)
506 7abf1863 2023-02-20 thomas * If -b was not used and either none of the requested branches
507 7abf1863 2023-02-20 thomas * (got.conf, worktree) were found or the client already has the
508 7abf1863 2023-02-20 thomas * remote HEAD symref but its target changed, fetch remote's HEAD.
510 7abf1863 2023-02-20 thomas if (!no_head && default_branch && default_id_str &&
511 7917d6d5 2023-02-17 thomas strncmp(default_branch, "refs/heads/", 11) == 0) {
512 7abf1863 2023-02-20 thomas int remote_head_changed = 0;
514 7abf1863 2023-02-20 thomas if (remote_head) {
515 7abf1863 2023-02-20 thomas if (strcmp(remote_head, default_branch + 11) != 0)
516 7abf1863 2023-02-20 thomas remote_head_changed = 1;
519 7abf1863 2023-02-20 thomas if (!found_branch || remote_head_changed) {
520 7abf1863 2023-02-20 thomas err = fetch_ref(ibuf, have_refs, &have[nref],
521 7abf1863 2023-02-20 thomas &want[nref], default_branch, default_id_str);
523 7abf1863 2023-02-20 thomas goto done;
528 9d0a7ee3 2023-02-07 thomas /* Abort if we haven't found anything to fetch. */
529 9d0a7ee3 2023-02-07 thomas if (nref == 0) {
530 d392cc0a 2023-02-17 thomas struct got_pathlist_entry *pe;
531 d392cc0a 2023-02-17 thomas static char msg[PATH_MAX + 33];
533 d392cc0a 2023-02-17 thomas pe = TAILQ_FIRST(wanted_branches);
534 d392cc0a 2023-02-17 thomas if (pe) {
535 d392cc0a 2023-02-17 thomas snprintf(msg, sizeof(msg),
536 d392cc0a 2023-02-17 thomas "branch \"%s\" not found on server", pe->path);
537 d392cc0a 2023-02-17 thomas err = got_error_msg(GOT_ERR_FETCH_NO_BRANCH, msg);
538 d392cc0a 2023-02-17 thomas goto done;
541 d392cc0a 2023-02-17 thomas pe = TAILQ_FIRST(wanted_refs);
542 d392cc0a 2023-02-17 thomas if (pe) {
543 d392cc0a 2023-02-17 thomas snprintf(msg, sizeof(msg),
544 d392cc0a 2023-02-17 thomas "reference \"%s\" not found on server", pe->path);
545 d392cc0a 2023-02-17 thomas err = got_error_msg(GOT_ERR_FETCH_NO_BRANCH, msg);
546 d392cc0a 2023-02-17 thomas goto done;
549 659e7fbd 2020-03-20 stsp err = got_error(GOT_ERR_FETCH_NO_BRANCH);
553 cf875574 2020-03-18 stsp for (i = 0; i < nref; i++) {
554 93658fb9 2020-03-18 stsp if (got_object_id_cmp(&have[i], &want[i]) == 0)
556 93658fb9 2020-03-18 stsp got_sha1_digest_to_str(want[i].sha1, hashstr, sizeof(hashstr));
557 406106ee 2020-03-20 stsp n = snprintf(buf, sizeof(buf), "want %s%s\n", hashstr,
558 a90356f7 2021-08-26 stsp sent_my_capabilites || my_capabilities == NULL ?
559 a90356f7 2021-08-26 stsp "" : my_capabilities);
560 717a78d4 2022-08-16 thomas if (n < 0 || (size_t)n >= sizeof(buf)) {
561 9ff10419 2020-03-18 stsp err = got_error(GOT_ERR_NO_SPACE);
564 f024663d 2021-09-05 stsp err = got_pkt_writepkt(fd, buf, n, chattygot);
567 858b0dfb 2020-03-20 stsp sent_my_capabilites = 1;
570 f024663d 2021-09-05 stsp err = got_pkt_flushpkt(fd, chattygot);
574 3c912d14 2020-03-19 stsp if (nwant == 0)
577 ea83355f 2021-10-08 thomas TAILQ_FOREACH(pe, have_refs, entry) {
578 ea83355f 2021-10-08 thomas struct got_object_id *id = pe->data;
579 ea83355f 2021-10-08 thomas got_sha1_digest_to_str(id->sha1, hashstr, sizeof(hashstr));
580 93658fb9 2020-03-18 stsp n = snprintf(buf, sizeof(buf), "have %s\n", hashstr);
581 717a78d4 2022-08-16 thomas if (n < 0 || (size_t)n >= sizeof(buf)) {
582 9ff10419 2020-03-18 stsp err = got_error(GOT_ERR_NO_SPACE);
585 f024663d 2021-09-05 stsp err = got_pkt_writepkt(fd, buf, n, chattygot);
591 c12ab9ad 2023-02-21 thomas n = strlcpy(buf, "done\n", sizeof(buf));
592 c12ab9ad 2023-02-21 thomas err = got_pkt_writepkt(fd, buf, n, chattygot);
594 c12ab9ad 2023-02-21 thomas goto done;
596 7848a0e1 2020-03-19 stsp while (nhave > 0 && !acked) {
597 7848a0e1 2020-03-19 stsp struct got_object_id common_id;
599 7848a0e1 2020-03-19 stsp /* The server should ACK the object IDs we need. */
600 f024663d 2021-09-05 stsp err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
603 7848a0e1 2020-03-19 stsp if (n >= 4 && strncmp(buf, "ERR ", 4) == 0) {
604 7848a0e1 2020-03-19 stsp err = fetch_error(&buf[4], n - 4);
607 7848a0e1 2020-03-19 stsp if (n >= 4 && strncmp(buf, "NAK\n", 4) == 0) {
609 c12ab9ad 2023-02-21 thomas * Server could not find a common ancestor.
610 c12ab9ad 2023-02-21 thomas * Perhaps it is an out-of-date mirror, or there
611 c12ab9ad 2023-02-21 thomas * is a repository with unrelated history.
615 7848a0e1 2020-03-19 stsp if (n < 4 + SHA1_DIGEST_STRING_LENGTH ||
616 7848a0e1 2020-03-19 stsp strncmp(buf, "ACK ", 4) != 0) {
617 7848a0e1 2020-03-19 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
618 7848a0e1 2020-03-19 stsp "unexpected message from server");
621 c8ae092d 2023-02-23 thomas if (!got_parse_object_id(&common_id, buf + 4,
622 c8ae092d 2023-02-23 thomas GOT_HASH_SHA1)) {
623 7848a0e1 2020-03-19 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
624 7848a0e1 2020-03-19 stsp "bad object ID in ACK packet from server");
630 7848a0e1 2020-03-19 stsp if (nhave == 0) {
631 f024663d 2021-09-05 stsp err = got_pkt_readpkt(&n, fd, buf, sizeof(buf), chattygot);
634 7848a0e1 2020-03-19 stsp if (n != 4 || strncmp(buf, "NAK\n", n) != 0) {
635 7848a0e1 2020-03-19 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
636 7848a0e1 2020-03-19 stsp "unexpected message from server");
641 858b0dfb 2020-03-20 stsp if (chattygot)
642 858b0dfb 2020-03-20 stsp fprintf(stderr, "%s: fetching...\n", getprogname());
644 531c3985 2020-03-18 stsp if (my_capabilities != NULL &&
645 531c3985 2020-03-18 stsp strstr(my_capabilities, GOT_CAPA_SIDE_BAND_64K) != NULL)
646 531c3985 2020-03-18 stsp have_sidebands = 1;
648 9ff10419 2020-03-18 stsp while (1) {
649 dc671e91 2020-03-24 stsp ssize_t r = 0;
650 531c3985 2020-03-18 stsp int datalen = -1;
652 531c3985 2020-03-18 stsp if (have_sidebands) {
653 f024663d 2021-09-05 stsp err = got_pkt_readhdr(&datalen, fd, chattygot);
656 531c3985 2020-03-18 stsp if (datalen <= 0)
659 531c3985 2020-03-18 stsp /* Read sideband channel ID (one byte). */
660 531c3985 2020-03-18 stsp r = read(fd, buf, 1);
661 531c3985 2020-03-18 stsp if (r == -1) {
662 531c3985 2020-03-18 stsp err = got_error_from_errno("read");
665 531c3985 2020-03-18 stsp if (r != 1) {
666 531c3985 2020-03-18 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
667 531c3985 2020-03-18 stsp "short packet");
670 531c3985 2020-03-18 stsp if (datalen > sizeof(buf) - 5) {
671 531c3985 2020-03-18 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
672 531c3985 2020-03-18 stsp "bad packet length");
675 531c3985 2020-03-18 stsp datalen--; /* sideband ID has been read */
676 531c3985 2020-03-18 stsp if (buf[0] == GOT_SIDEBAND_PACKFILE_DATA) {
677 531c3985 2020-03-18 stsp /* Read packfile data. */
678 f024663d 2021-09-05 stsp err = got_pkt_readn(&r, fd, buf, datalen);
681 531c3985 2020-03-18 stsp if (r != datalen) {
682 531c3985 2020-03-18 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
683 531c3985 2020-03-18 stsp "packet too short");
686 531c3985 2020-03-18 stsp } else if (buf[0] == GOT_SIDEBAND_PROGRESS_INFO) {
687 f024663d 2021-09-05 stsp err = got_pkt_readn(&r, fd, buf, datalen);
690 531c3985 2020-03-18 stsp if (r != datalen) {
691 531c3985 2020-03-18 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
692 531c3985 2020-03-18 stsp "packet too short");
695 531c3985 2020-03-18 stsp err = fetch_progress(ibuf, buf, r);
699 531c3985 2020-03-18 stsp } else if (buf[0] == GOT_SIDEBAND_ERROR_INFO) {
700 f024663d 2021-09-05 stsp err = got_pkt_readn(&r, fd, buf, datalen);
703 531c3985 2020-03-18 stsp if (r != datalen) {
704 531c3985 2020-03-18 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
705 531c3985 2020-03-18 stsp "packet too short");
708 531c3985 2020-03-18 stsp err = fetch_error(buf, r);
710 98f64f14 2021-01-05 stsp } else if (buf[0] == 'A') {
711 f024663d 2021-09-05 stsp err = got_pkt_readn(&r, fd, buf, datalen);
714 98f64f14 2021-01-05 stsp if (r != datalen) {
715 98f64f14 2021-01-05 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
716 98f64f14 2021-01-05 stsp "packet too short");
720 98f64f14 2021-01-05 stsp * Git server responds with ACK after 'done'
721 98f64f14 2021-01-05 stsp * even though multi_ack is disabled?!?
723 98f64f14 2021-01-05 stsp buf[r] = '\0';
724 98f64f14 2021-01-05 stsp if (strncmp(buf, "CK ", 3) == 0)
725 98f64f14 2021-01-05 stsp continue; /* ignore */
726 98f64f14 2021-01-05 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
727 98f64f14 2021-01-05 stsp "unexpected message from server");
730 531c3985 2020-03-18 stsp err = got_error_msg(GOT_ERR_BAD_PACKET,
731 531c3985 2020-03-18 stsp "unknown side-band received from server");
735 531c3985 2020-03-18 stsp /* No sideband channel. Every byte is packfile data. */
736 f024663d 2021-09-05 stsp err = got_pkt_readn(&r, fd, buf, sizeof buf);
739 531c3985 2020-03-18 stsp if (r <= 0)
744 dc671e91 2020-03-24 stsp * An expected SHA1 checksum sits at the end of the pack file.
745 dc671e91 2020-03-24 stsp * Since we don't know the file size ahead of time we have to
746 dc671e91 2020-03-24 stsp * keep SHA1_DIGEST_LENGTH bytes buffered and avoid mixing
747 dc671e91 2020-03-24 stsp * those bytes into our SHA1 checksum computation until we
748 dc671e91 2020-03-24 stsp * know for sure that additional pack file data bytes follow.
750 dc671e91 2020-03-24 stsp * We can assume r > 0 since otherwise the loop would exit.
752 dc671e91 2020-03-24 stsp if (r < SHA1_DIGEST_LENGTH) {
753 dc671e91 2020-03-24 stsp if (sha1_buf_len < SHA1_DIGEST_LENGTH) {
755 dc671e91 2020-03-24 stsp * If there's enough buffered + read data to
756 dc671e91 2020-03-24 stsp * fill up the buffer then shift a sufficient
757 dc671e91 2020-03-24 stsp * amount of bytes out at the front to make
758 dc671e91 2020-03-24 stsp * room, mixing those bytes into the checksum.
760 9439b99a 2022-10-30 thomas if (sha1_buf_len > 0 &&
761 dc671e91 2020-03-24 stsp sha1_buf_len + r > SHA1_DIGEST_LENGTH) {
762 9439b99a 2022-10-30 thomas size_t nshift = MIN(sha1_buf_len + r -
763 9439b99a 2022-10-30 thomas SHA1_DIGEST_LENGTH, sha1_buf_len);
764 b16893ba 2023-02-24 thomas got_hash_update(&ctx, sha1_buf,
766 9439b99a 2022-10-30 thomas memmove(sha1_buf, sha1_buf + nshift,
767 9439b99a 2022-10-30 thomas sha1_buf_len - nshift);
768 9439b99a 2022-10-30 thomas sha1_buf_len -= nshift;
771 dc671e91 2020-03-24 stsp /* Buffer potential checksum bytes. */
772 dc671e91 2020-03-24 stsp memcpy(sha1_buf + sha1_buf_len, buf, r);
773 dc671e91 2020-03-24 stsp sha1_buf_len += r;
776 dc671e91 2020-03-24 stsp * Mix in previously buffered bytes which
777 dc671e91 2020-03-24 stsp * are not part of the checksum after all.
779 b16893ba 2023-02-24 thomas got_hash_update(&ctx, sha1_buf, r);
781 dc671e91 2020-03-24 stsp /* Update potential checksum buffer. */
782 dc671e91 2020-03-24 stsp memmove(sha1_buf, sha1_buf + r,
783 dc671e91 2020-03-24 stsp sha1_buf_len - r);
784 dc671e91 2020-03-24 stsp memcpy(sha1_buf + sha1_buf_len - r, buf, r);
787 dc671e91 2020-03-24 stsp /* Mix in any previously buffered bytes. */
788 b16893ba 2023-02-24 thomas got_hash_update(&ctx, sha1_buf, sha1_buf_len);
790 dc671e91 2020-03-24 stsp /* Mix in bytes read minus potential checksum bytes. */
791 b16893ba 2023-02-24 thomas got_hash_update(&ctx, buf, r - SHA1_DIGEST_LENGTH);
793 dc671e91 2020-03-24 stsp /* Buffer potential checksum bytes. */
794 dc671e91 2020-03-24 stsp memcpy(sha1_buf, buf + r - SHA1_DIGEST_LENGTH,
795 dc671e91 2020-03-24 stsp SHA1_DIGEST_LENGTH);
796 dc671e91 2020-03-24 stsp sha1_buf_len = SHA1_DIGEST_LENGTH;
799 531c3985 2020-03-18 stsp /* Write packfile data to temporary pack file. */
800 fe53745c 2020-03-18 stsp w = write(packfd, buf, r);
801 9ff10419 2020-03-18 stsp if (w == -1) {
802 9ff10419 2020-03-18 stsp err = got_error_from_errno("write");
805 fe53745c 2020-03-18 stsp if (w != r) {
806 9ff10419 2020-03-18 stsp err = got_error(GOT_ERR_IO);
809 531c3985 2020-03-18 stsp packsz += w;
811 5672d305 2020-03-18 stsp /* Don't send too many progress privsep messages. */
812 5672d305 2020-03-18 stsp if (packsz > last_reported_packsz + 1024) {
813 b637eb2e 2022-02-23 thomas err = send_fetch_download_progress(ibuf, packsz, &rl);
816 5672d305 2020-03-18 stsp last_reported_packsz = packsz;
819 b637eb2e 2022-02-23 thomas err = send_fetch_download_progress(ibuf, packsz, NULL);
823 b16893ba 2023-02-24 thomas got_hash_final(&ctx, pack_sha1);
824 dc671e91 2020-03-24 stsp if (sha1_buf_len != SHA1_DIGEST_LENGTH ||
825 dc671e91 2020-03-24 stsp memcmp(pack_sha1, sha1_buf, sha1_buf_len) != 0) {
826 dc671e91 2020-03-24 stsp err = got_error_msg(GOT_ERR_BAD_PACKFILE,
827 dc671e91 2020-03-24 stsp "pack file checksum mismatch");
830 21c2d8be 2023-01-10 thomas got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
831 9ff10419 2020-03-18 stsp free(have);
832 9ff10419 2020-03-18 stsp free(want);
833 00cd0e0a 2020-03-18 stsp free(id_str);
834 7917d6d5 2023-02-17 thomas free(default_id_str);
835 00cd0e0a 2020-03-18 stsp free(refname);
836 00cd0e0a 2020-03-18 stsp free(server_capabilities);
837 8f2d01a6 2020-03-18 stsp return err;
842 93658fb9 2020-03-18 stsp main(int argc, char **argv)
844 93658fb9 2020-03-18 stsp const struct got_error *err = NULL;
845 d639f28b 2023-01-10 thomas int fetchfd = -1, packfd = -1;
846 1d72a2a0 2020-03-24 stsp uint8_t pack_sha1[SHA1_DIGEST_LENGTH];
847 93658fb9 2020-03-18 stsp struct imsgbuf ibuf;
848 93658fb9 2020-03-18 stsp struct imsg imsg;
849 33501562 2020-03-18 stsp struct got_pathlist_head have_refs;
850 4ba14133 2020-03-20 stsp struct got_pathlist_head wanted_branches;
851 0e4002ca 2020-03-21 stsp struct got_pathlist_head wanted_refs;
852 4ba14133 2020-03-20 stsp struct got_imsg_fetch_request fetch_req;
853 659e7fbd 2020-03-20 stsp struct got_imsg_fetch_have_ref href;
854 4ba14133 2020-03-20 stsp struct got_imsg_fetch_wanted_branch wbranch;
855 0e4002ca 2020-03-21 stsp struct got_imsg_fetch_wanted_ref wref;
856 01bb5a15 2021-09-25 thomas.ad size_t datalen, i;
857 7abf1863 2023-02-20 thomas char *remote_head = NULL, *worktree_branch = NULL;
859 7848a0e1 2020-03-19 stsp static int attached;
860 7848a0e1 2020-03-19 stsp while (!attached)
864 33501562 2020-03-18 stsp TAILQ_INIT(&have_refs);
865 4ba14133 2020-03-20 stsp TAILQ_INIT(&wanted_branches);
866 0e4002ca 2020-03-21 stsp TAILQ_INIT(&wanted_refs);
868 93658fb9 2020-03-18 stsp imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
869 ffb5f621 2020-03-18 stsp #ifndef PROFILE
870 ffb5f621 2020-03-18 stsp /* revoke access to most system calls */
871 ffb5f621 2020-03-18 stsp if (pledge("stdio recvfd", NULL) == -1) {
872 ffb5f621 2020-03-18 stsp err = got_error_from_errno("pledge");
873 ffb5f621 2020-03-18 stsp got_privsep_send_error(&ibuf, err);
877 97799ccd 2022-02-06 thomas /* revoke fs access */
878 97799ccd 2022-02-06 thomas if (landlock_no_fs() == -1) {
879 97799ccd 2022-02-06 thomas err = got_error_from_errno("landlock_no_fs");
880 97799ccd 2022-02-06 thomas got_privsep_send_error(&ibuf, err);
881 97799ccd 2022-02-06 thomas return 1;
883 5d120ea8 2022-06-23 op if (cap_enter() == -1) {
884 5d120ea8 2022-06-23 op err = got_error_from_errno("cap_enter");
885 5d120ea8 2022-06-23 op got_privsep_send_error(&ibuf, err);
889 9ca26ac3 2021-08-06 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
891 93658fb9 2020-03-18 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
892 93658fb9 2020-03-18 stsp err = NULL;
895 93658fb9 2020-03-18 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
897 93658fb9 2020-03-18 stsp if (imsg.hdr.type != GOT_IMSG_FETCH_REQUEST) {
898 93658fb9 2020-03-18 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
901 33501562 2020-03-18 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
902 4ba14133 2020-03-20 stsp if (datalen < sizeof(fetch_req)) {
903 93658fb9 2020-03-18 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
906 4ba14133 2020-03-20 stsp memcpy(&fetch_req, imsg.data, sizeof(fetch_req));
907 4ba14133 2020-03-20 stsp fetchfd = imsg.fd;
909 9d0a7ee3 2023-02-07 thomas if (datalen != sizeof(fetch_req) +
910 7abf1863 2023-02-20 thomas fetch_req.worktree_branch_len + fetch_req.remote_head_len) {
911 9d0a7ee3 2023-02-07 thomas err = got_error(GOT_ERR_PRIVSEP_LEN);
912 9d0a7ee3 2023-02-07 thomas goto done;
915 9d0a7ee3 2023-02-07 thomas if (fetch_req.worktree_branch_len != 0) {
916 9d0a7ee3 2023-02-07 thomas worktree_branch = strndup(imsg.data +
917 9d0a7ee3 2023-02-07 thomas sizeof(fetch_req), fetch_req.worktree_branch_len);
918 9d0a7ee3 2023-02-07 thomas if (worktree_branch == NULL) {
919 7abf1863 2023-02-20 thomas err = got_error_from_errno("strndup");
920 7abf1863 2023-02-20 thomas goto done;
924 7abf1863 2023-02-20 thomas if (fetch_req.remote_head_len != 0) {
925 7abf1863 2023-02-20 thomas remote_head = strndup(imsg.data + sizeof(fetch_req) +
926 7abf1863 2023-02-20 thomas fetch_req.worktree_branch_len, fetch_req.remote_head_len);
927 7abf1863 2023-02-20 thomas if (remote_head == NULL) {
928 9d0a7ee3 2023-02-07 thomas err = got_error_from_errno("strndup");
929 9d0a7ee3 2023-02-07 thomas goto done;
933 4ba14133 2020-03-20 stsp imsg_free(&imsg);
935 2690194b 2020-03-21 stsp if (fetch_req.verbosity > 0)
936 2690194b 2020-03-21 stsp chattygot += fetch_req.verbosity;
938 4ba14133 2020-03-20 stsp for (i = 0; i < fetch_req.n_have_refs; i++) {
939 7848a0e1 2020-03-19 stsp struct got_object_id *id;
940 7848a0e1 2020-03-19 stsp char *refname;
942 9ca26ac3 2021-08-06 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
944 4ba14133 2020-03-20 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
945 4ba14133 2020-03-20 stsp err = NULL;
948 4ba14133 2020-03-20 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
950 4ba14133 2020-03-20 stsp if (imsg.hdr.type != GOT_IMSG_FETCH_HAVE_REF) {
951 4ba14133 2020-03-20 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
954 4ba14133 2020-03-20 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
955 4ba14133 2020-03-20 stsp if (datalen < sizeof(href)) {
956 659e7fbd 2020-03-20 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
959 4ba14133 2020-03-20 stsp memcpy(&href, imsg.data, sizeof(href));
960 4ba14133 2020-03-20 stsp if (datalen - sizeof(href) < href.name_len) {
961 7848a0e1 2020-03-19 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
964 fcbb06bf 2023-01-14 thomas refname = strndup(imsg.data + sizeof(href), href.name_len);
965 7848a0e1 2020-03-19 stsp if (refname == NULL) {
966 fcbb06bf 2023-01-14 thomas err = got_error_from_errno("strndup");
970 7848a0e1 2020-03-19 stsp id = malloc(sizeof(*id));
971 7848a0e1 2020-03-19 stsp if (id == NULL) {
972 7848a0e1 2020-03-19 stsp free(refname);
973 7848a0e1 2020-03-19 stsp err = got_error_from_errno("malloc");
976 f9f54468 2023-02-03 thomas memcpy(id, &href.id, sizeof(*id));
977 7848a0e1 2020-03-19 stsp err = got_pathlist_append(&have_refs, refname, id);
979 7848a0e1 2020-03-19 stsp free(refname);
984 4ba14133 2020-03-20 stsp imsg_free(&imsg);
987 4ba14133 2020-03-20 stsp for (i = 0; i < fetch_req.n_wanted_branches; i++) {
988 4ba14133 2020-03-20 stsp char *refname;
990 9ca26ac3 2021-08-06 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
992 4ba14133 2020-03-20 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
993 4ba14133 2020-03-20 stsp err = NULL;
996 4ba14133 2020-03-20 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
998 4ba14133 2020-03-20 stsp if (imsg.hdr.type != GOT_IMSG_FETCH_WANTED_BRANCH) {
999 4ba14133 2020-03-20 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
1000 4ba14133 2020-03-20 stsp goto done;
1002 4ba14133 2020-03-20 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1003 4ba14133 2020-03-20 stsp if (datalen < sizeof(wbranch)) {
1004 4ba14133 2020-03-20 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
1005 4ba14133 2020-03-20 stsp goto done;
1007 4ba14133 2020-03-20 stsp memcpy(&wbranch, imsg.data, sizeof(wbranch));
1008 4ba14133 2020-03-20 stsp if (datalen - sizeof(wbranch) < wbranch.name_len) {
1009 4ba14133 2020-03-20 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
1010 4ba14133 2020-03-20 stsp goto done;
1012 fcbb06bf 2023-01-14 thomas refname = strndup(imsg.data + sizeof(wbranch),
1013 fcbb06bf 2023-01-14 thomas wbranch.name_len);
1014 4ba14133 2020-03-20 stsp if (refname == NULL) {
1015 fcbb06bf 2023-01-14 thomas err = got_error_from_errno("strndup");
1016 4ba14133 2020-03-20 stsp goto done;
1019 4ba14133 2020-03-20 stsp err = got_pathlist_append(&wanted_branches, refname, NULL);
1020 4ba14133 2020-03-20 stsp if (err) {
1021 4ba14133 2020-03-20 stsp free(refname);
1022 4ba14133 2020-03-20 stsp goto done;
1025 4ba14133 2020-03-20 stsp imsg_free(&imsg);
1028 0e4002ca 2020-03-21 stsp for (i = 0; i < fetch_req.n_wanted_refs; i++) {
1029 0e4002ca 2020-03-21 stsp char *refname;
1031 9ca26ac3 2021-08-06 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
1032 9ca26ac3 2021-08-06 stsp if (err) {
1033 0e4002ca 2020-03-21 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
1034 0e4002ca 2020-03-21 stsp err = NULL;
1035 0e4002ca 2020-03-21 stsp goto done;
1037 0e4002ca 2020-03-21 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
1038 0e4002ca 2020-03-21 stsp goto done;
1039 0e4002ca 2020-03-21 stsp if (imsg.hdr.type != GOT_IMSG_FETCH_WANTED_REF) {
1040 0e4002ca 2020-03-21 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
1041 0e4002ca 2020-03-21 stsp goto done;
1043 0e4002ca 2020-03-21 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1044 0e4002ca 2020-03-21 stsp if (datalen < sizeof(wref)) {
1045 0e4002ca 2020-03-21 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
1046 0e4002ca 2020-03-21 stsp goto done;
1048 0e4002ca 2020-03-21 stsp memcpy(&wref, imsg.data, sizeof(wref));
1049 0e4002ca 2020-03-21 stsp if (datalen - sizeof(wref) < wref.name_len) {
1050 0e4002ca 2020-03-21 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
1051 0e4002ca 2020-03-21 stsp goto done;
1053 fcbb06bf 2023-01-14 thomas refname = strndup(imsg.data + sizeof(wref), wref.name_len);
1054 0e4002ca 2020-03-21 stsp if (refname == NULL) {
1055 fcbb06bf 2023-01-14 thomas err = got_error_from_errno("strndup");
1056 0e4002ca 2020-03-21 stsp goto done;
1059 0e4002ca 2020-03-21 stsp err = got_pathlist_append(&wanted_refs, refname, NULL);
1060 0e4002ca 2020-03-21 stsp if (err) {
1061 0e4002ca 2020-03-21 stsp free(refname);
1062 0e4002ca 2020-03-21 stsp goto done;
1065 0e4002ca 2020-03-21 stsp imsg_free(&imsg);
1068 9ca26ac3 2021-08-06 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
1069 9ca26ac3 2021-08-06 stsp if (err) {
1070 93658fb9 2020-03-18 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
1071 93658fb9 2020-03-18 stsp err = NULL;
1072 93658fb9 2020-03-18 stsp goto done;
1074 93658fb9 2020-03-18 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
1075 93658fb9 2020-03-18 stsp goto done;
1076 f826addf 2020-03-18 stsp if (imsg.hdr.type != GOT_IMSG_FETCH_OUTFD) {
1077 93658fb9 2020-03-18 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
1078 93658fb9 2020-03-18 stsp goto done;
1080 93658fb9 2020-03-18 stsp if (imsg.hdr.len - IMSG_HEADER_SIZE != 0) {
1081 93658fb9 2020-03-18 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
1082 93658fb9 2020-03-18 stsp goto done;
1084 93658fb9 2020-03-18 stsp packfd = imsg.fd;
1086 1d72a2a0 2020-03-24 stsp err = fetch_pack(fetchfd, packfd, pack_sha1, &have_refs,
1087 41b0de12 2020-03-21 stsp fetch_req.fetch_all_branches, &wanted_branches,
1088 9d0a7ee3 2023-02-07 thomas &wanted_refs, fetch_req.list_refs_only,
1089 7abf1863 2023-02-20 thomas worktree_branch, remote_head, fetch_req.no_head, &ibuf);
1091 9d0a7ee3 2023-02-07 thomas free(worktree_branch);
1092 7abf1863 2023-02-20 thomas free(remote_head);
1093 21c2d8be 2023-01-10 thomas got_pathlist_free(&have_refs, GOT_PATHLIST_FREE_ALL);
1094 21c2d8be 2023-01-10 thomas got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_PATH);
1095 0bec957e 2020-03-21 stsp if (fetchfd != -1 && close(fetchfd) == -1 && err == NULL)
1096 0bec957e 2020-03-21 stsp err = got_error_from_errno("close");
1097 9ff10419 2020-03-18 stsp if (packfd != -1 && close(packfd) == -1 && err == NULL)
1098 9ff10419 2020-03-18 stsp err = got_error_from_errno("close");
1099 9ff10419 2020-03-18 stsp if (err != NULL)
1100 93658fb9 2020-03-18 stsp got_privsep_send_error(&ibuf, err);
1102 1d72a2a0 2020-03-24 stsp err = send_fetch_done(&ibuf, pack_sha1);
1103 cf875574 2020-03-18 stsp if (err != NULL) {
1104 93658fb9 2020-03-18 stsp fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
1105 93658fb9 2020-03-18 stsp got_privsep_send_error(&ibuf, err);
