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Commit | Line | Data |
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745f7a8c | 1 | #include "cache.h" |
a49d2834 | 2 | #include "repository.h" |
b2141fc1 | 3 | #include "config.h" |
697cc8ef | 4 | #include "lockfile.h" |
745f7a8c NTND |
5 | #include "refs.h" |
6 | #include "pkt-line.h" | |
7 | #include "commit.h" | |
8 | #include "tag.h" | |
d807c4a0 | 9 | #include "exec-cmd.h" |
745f7a8c NTND |
10 | #include "pack.h" |
11 | #include "sideband.h" | |
12 | #include "fetch-pack.h" | |
13 | #include "remote.h" | |
14 | #include "run-command.h" | |
47a59185 | 15 | #include "connect.h" |
745f7a8c NTND |
16 | #include "transport.h" |
17 | #include "version.h" | |
beea4152 | 18 | #include "sha1-array.h" |
fdb69d33 | 19 | #include "oidset.h" |
0abe14f6 | 20 | #include "packfile.h" |
cbd53a21 | 21 | #include "object-store.h" |
cf1e7c07 | 22 | #include "connected.h" |
ec062838 | 23 | #include "fetch-negotiator.h" |
1362df0d | 24 | #include "fsck.h" |
745f7a8c NTND |
25 | |
26 | static int transfer_unpack_limit = -1; | |
27 | static int fetch_unpack_limit = -1; | |
28 | static int unpack_limit = 100; | |
29 | static int prefer_ofs_delta = 1; | |
30 | static int no_done; | |
508ea882 | 31 | static int deepen_since_ok; |
a45a2600 | 32 | static int deepen_not_ok; |
745f7a8c NTND |
33 | static int fetch_fsck_objects = -1; |
34 | static int transfer_fsck_objects = -1; | |
35 | static int agent_supported; | |
640d8b72 | 36 | static int server_supports_filtering; |
6035d6aa NTND |
37 | static struct lock_file shallow_lock; |
38 | static const char *alternate_shallow_file; | |
42cc7485 | 39 | static char *negotiation_algorithm; |
1362df0d | 40 | static struct strbuf fsck_msg_types = STRBUF_INIT; |
745f7a8c | 41 | |
208acbfb | 42 | /* Remember to update object flag allocation in object.h */ |
745f7a8c | 43 | #define COMPLETE (1U << 0) |
ec062838 | 44 | #define ALTERNATE (1U << 1) |
745f7a8c NTND |
45 | |
46 | /* | |
47 | * After sending this many "have"s if we do not get any new ACK , we | |
48 | * give up traversing our history. | |
49 | */ | |
50 | #define MAX_IN_VAIN 256 | |
51 | ||
d30fe89c | 52 | static int multi_ack, use_sideband; |
7199c093 FM |
53 | /* Allow specifying sha1 if it is a ref tip. */ |
54 | #define ALLOW_TIP_SHA1 01 | |
68ee6289 FM |
55 | /* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */ |
56 | #define ALLOW_REACHABLE_SHA1 02 | |
7199c093 | 57 | static unsigned int allow_unadvertised_object_request; |
745f7a8c | 58 | |
0d789a5b NTND |
59 | __attribute__((format (printf, 2, 3))) |
60 | static inline void print_verbose(const struct fetch_pack_args *args, | |
61 | const char *fmt, ...) | |
62 | { | |
63 | va_list params; | |
64 | ||
65 | if (!args->verbose) | |
66 | return; | |
67 | ||
68 | va_start(params, fmt); | |
69 | vfprintf(stderr, fmt, params); | |
70 | va_end(params); | |
71 | fputc('\n', stderr); | |
72 | } | |
73 | ||
41a078c6 JK |
74 | struct alternate_object_cache { |
75 | struct object **items; | |
76 | size_t nr, alloc; | |
77 | }; | |
78 | ||
79 | static void cache_one_alternate(const char *refname, | |
80 | const struct object_id *oid, | |
81 | void *vcache) | |
82 | { | |
83 | struct alternate_object_cache *cache = vcache; | |
109cd76d | 84 | struct object *obj = parse_object(the_repository, oid); |
41a078c6 JK |
85 | |
86 | if (!obj || (obj->flags & ALTERNATE)) | |
87 | return; | |
88 | ||
89 | obj->flags |= ALTERNATE; | |
90 | ALLOC_GROW(cache->items, cache->nr + 1, cache->alloc); | |
91 | cache->items[cache->nr++] = obj; | |
92 | } | |
93 | ||
ec062838 JT |
94 | static void for_each_cached_alternate(struct fetch_negotiator *negotiator, |
95 | void (*cb)(struct fetch_negotiator *, | |
d30fe89c | 96 | struct object *)) |
41a078c6 JK |
97 | { |
98 | static int initialized; | |
99 | static struct alternate_object_cache cache; | |
100 | size_t i; | |
101 | ||
102 | if (!initialized) { | |
103 | for_each_alternate_ref(cache_one_alternate, &cache); | |
104 | initialized = 1; | |
105 | } | |
106 | ||
107 | for (i = 0; i < cache.nr; i++) | |
ec062838 | 108 | cb(negotiator, cache.items[i]); |
745f7a8c NTND |
109 | } |
110 | ||
ec062838 | 111 | static int rev_list_insert_ref(struct fetch_negotiator *negotiator, |
d30fe89c JT |
112 | const char *refname, |
113 | const struct object_id *oid) | |
745f7a8c | 114 | { |
a74093da SB |
115 | struct object *o = deref_tag(the_repository, |
116 | parse_object(the_repository, oid), | |
109cd76d | 117 | refname, 0); |
745f7a8c NTND |
118 | |
119 | if (o && o->type == OBJ_COMMIT) | |
ec062838 | 120 | negotiator->add_tip(negotiator, (struct commit *)o); |
745f7a8c NTND |
121 | |
122 | return 0; | |
123 | } | |
124 | ||
b1b49c6e MH |
125 | static int rev_list_insert_ref_oid(const char *refname, const struct object_id *oid, |
126 | int flag, void *cb_data) | |
745f7a8c | 127 | { |
d30fe89c | 128 | return rev_list_insert_ref(cb_data, refname, oid); |
745f7a8c NTND |
129 | } |
130 | ||
131 | enum ack_type { | |
132 | NAK = 0, | |
133 | ACK, | |
134 | ACK_continue, | |
135 | ACK_common, | |
136 | ACK_ready | |
137 | }; | |
138 | ||
139 | static void consume_shallow_list(struct fetch_pack_args *args, int fd) | |
140 | { | |
79891cb9 | 141 | if (args->stateless_rpc && args->deepen) { |
745f7a8c NTND |
142 | /* If we sent a depth we will get back "duplicate" |
143 | * shallow and unshallow commands every time there | |
144 | * is a block of have lines exchanged. | |
145 | */ | |
74543a04 JK |
146 | char *line; |
147 | while ((line = packet_read_line(fd, NULL))) { | |
59556548 | 148 | if (starts_with(line, "shallow ")) |
745f7a8c | 149 | continue; |
59556548 | 150 | if (starts_with(line, "unshallow ")) |
745f7a8c | 151 | continue; |
1dd73e20 | 152 | die(_("git fetch-pack: expected shallow list")); |
745f7a8c NTND |
153 | } |
154 | } | |
155 | } | |
156 | ||
1b283377 | 157 | static enum ack_type get_ack(int fd, struct object_id *result_oid) |
745f7a8c | 158 | { |
74543a04 JK |
159 | int len; |
160 | char *line = packet_read_line(fd, &len); | |
82e56767 | 161 | const char *arg; |
745f7a8c | 162 | |
bc9d4dc5 JK |
163 | if (!line) |
164 | die(_("git fetch-pack: expected ACK/NAK, got a flush packet")); | |
745f7a8c NTND |
165 | if (!strcmp(line, "NAK")) |
166 | return NAK; | |
82e56767 | 167 | if (skip_prefix(line, "ACK ", &arg)) { |
1b283377 | 168 | if (!get_oid_hex(arg, result_oid)) { |
82e56767 JK |
169 | arg += 40; |
170 | len -= arg - line; | |
171 | if (len < 1) | |
030e9dd6 | 172 | return ACK; |
82e56767 | 173 | if (strstr(arg, "continue")) |
745f7a8c | 174 | return ACK_continue; |
82e56767 | 175 | if (strstr(arg, "common")) |
745f7a8c | 176 | return ACK_common; |
82e56767 | 177 | if (strstr(arg, "ready")) |
745f7a8c NTND |
178 | return ACK_ready; |
179 | return ACK; | |
180 | } | |
181 | } | |
8e2c7bef JT |
182 | if (skip_prefix(line, "ERR ", &arg)) |
183 | die(_("remote error: %s"), arg); | |
dfbfb9f3 | 184 | die(_("git fetch-pack: expected ACK/NAK, got '%s'"), line); |
745f7a8c NTND |
185 | } |
186 | ||
187 | static void send_request(struct fetch_pack_args *args, | |
188 | int fd, struct strbuf *buf) | |
189 | { | |
190 | if (args->stateless_rpc) { | |
191 | send_sideband(fd, -1, buf->buf, buf->len, LARGE_PACKET_MAX); | |
192 | packet_flush(fd); | |
193 | } else | |
cdf4fb8e | 194 | write_or_die(fd, buf->buf, buf->len); |
745f7a8c NTND |
195 | } |
196 | ||
ec062838 | 197 | static void insert_one_alternate_object(struct fetch_negotiator *negotiator, |
d30fe89c | 198 | struct object *obj) |
745f7a8c | 199 | { |
ec062838 | 200 | rev_list_insert_ref(negotiator, NULL, &obj->oid); |
745f7a8c NTND |
201 | } |
202 | ||
203 | #define INITIAL_FLUSH 16 | |
204 | #define PIPESAFE_FLUSH 32 | |
da470981 | 205 | #define LARGE_FLUSH 16384 |
745f7a8c | 206 | |
685fbd32 | 207 | static int next_flush(int stateless_rpc, int count) |
745f7a8c | 208 | { |
685fbd32 | 209 | if (stateless_rpc) { |
da470981 JT |
210 | if (count < LARGE_FLUSH) |
211 | count <<= 1; | |
212 | else | |
213 | count = count * 11 / 10; | |
214 | } else { | |
215 | if (count < PIPESAFE_FLUSH) | |
216 | count <<= 1; | |
217 | else | |
218 | count += PIPESAFE_FLUSH; | |
219 | } | |
745f7a8c NTND |
220 | return count; |
221 | } | |
222 | ||
3390e42a JT |
223 | static void mark_tips(struct fetch_negotiator *negotiator, |
224 | const struct oid_array *negotiation_tips) | |
225 | { | |
226 | int i; | |
227 | ||
228 | if (!negotiation_tips) { | |
229 | for_each_ref(rev_list_insert_ref_oid, negotiator); | |
230 | return; | |
231 | } | |
232 | ||
233 | for (i = 0; i < negotiation_tips->nr; i++) | |
234 | rev_list_insert_ref(negotiator, NULL, | |
235 | &negotiation_tips->oid[i]); | |
236 | return; | |
237 | } | |
238 | ||
ec062838 | 239 | static int find_common(struct fetch_negotiator *negotiator, |
d30fe89c | 240 | struct fetch_pack_args *args, |
1b283377 | 241 | int fd[2], struct object_id *result_oid, |
745f7a8c NTND |
242 | struct ref *refs) |
243 | { | |
244 | int fetching; | |
245 | int count = 0, flushes = 0, flush_at = INITIAL_FLUSH, retval; | |
1b283377 | 246 | const struct object_id *oid; |
745f7a8c NTND |
247 | unsigned in_vain = 0; |
248 | int got_continue = 0; | |
249 | int got_ready = 0; | |
250 | struct strbuf req_buf = STRBUF_INIT; | |
251 | size_t state_len = 0; | |
252 | ||
253 | if (args->stateless_rpc && multi_ack == 1) | |
1dd73e20 | 254 | die(_("--stateless-rpc requires multi_ack_detailed")); |
745f7a8c | 255 | |
12f19a98 JT |
256 | if (!args->no_dependents) { |
257 | mark_tips(negotiator, args->negotiation_tips); | |
258 | for_each_cached_alternate(negotiator, insert_one_alternate_object); | |
259 | } | |
745f7a8c NTND |
260 | |
261 | fetching = 0; | |
262 | for ( ; refs ; refs = refs->next) { | |
1b283377 | 263 | struct object_id *remote = &refs->old_oid; |
745f7a8c NTND |
264 | const char *remote_hex; |
265 | struct object *o; | |
266 | ||
267 | /* | |
268 | * If that object is complete (i.e. it is an ancestor of a | |
269 | * local ref), we tell them we have it but do not have to | |
270 | * tell them about its ancestors, which they already know | |
271 | * about. | |
272 | * | |
273 | * We use lookup_object here because we are only | |
274 | * interested in the case we *know* the object is | |
275 | * reachable and we have already scanned it. | |
12f19a98 JT |
276 | * |
277 | * Do this only if args->no_dependents is false (if it is true, | |
278 | * we cannot trust the object flags). | |
745f7a8c | 279 | */ |
12f19a98 JT |
280 | if (!args->no_dependents && |
281 | ((o = lookup_object(the_repository, remote->hash)) != NULL) && | |
745f7a8c NTND |
282 | (o->flags & COMPLETE)) { |
283 | continue; | |
284 | } | |
285 | ||
1b283377 | 286 | remote_hex = oid_to_hex(remote); |
745f7a8c NTND |
287 | if (!fetching) { |
288 | struct strbuf c = STRBUF_INIT; | |
289 | if (multi_ack == 2) strbuf_addstr(&c, " multi_ack_detailed"); | |
290 | if (multi_ack == 1) strbuf_addstr(&c, " multi_ack"); | |
291 | if (no_done) strbuf_addstr(&c, " no-done"); | |
292 | if (use_sideband == 2) strbuf_addstr(&c, " side-band-64k"); | |
293 | if (use_sideband == 1) strbuf_addstr(&c, " side-band"); | |
cccf74e2 | 294 | if (args->deepen_relative) strbuf_addstr(&c, " deepen-relative"); |
745f7a8c NTND |
295 | if (args->use_thin_pack) strbuf_addstr(&c, " thin-pack"); |
296 | if (args->no_progress) strbuf_addstr(&c, " no-progress"); | |
297 | if (args->include_tag) strbuf_addstr(&c, " include-tag"); | |
298 | if (prefer_ofs_delta) strbuf_addstr(&c, " ofs-delta"); | |
508ea882 | 299 | if (deepen_since_ok) strbuf_addstr(&c, " deepen-since"); |
a45a2600 | 300 | if (deepen_not_ok) strbuf_addstr(&c, " deepen-not"); |
745f7a8c NTND |
301 | if (agent_supported) strbuf_addf(&c, " agent=%s", |
302 | git_user_agent_sanitized()); | |
640d8b72 JH |
303 | if (args->filter_options.choice) |
304 | strbuf_addstr(&c, " filter"); | |
745f7a8c NTND |
305 | packet_buf_write(&req_buf, "want %s%s\n", remote_hex, c.buf); |
306 | strbuf_release(&c); | |
307 | } else | |
308 | packet_buf_write(&req_buf, "want %s\n", remote_hex); | |
309 | fetching++; | |
310 | } | |
311 | ||
312 | if (!fetching) { | |
313 | strbuf_release(&req_buf); | |
314 | packet_flush(fd[1]); | |
315 | return 1; | |
316 | } | |
317 | ||
c8813487 | 318 | if (is_repository_shallow(the_repository)) |
1a30f5a2 | 319 | write_shallow_commits(&req_buf, 1, NULL); |
745f7a8c NTND |
320 | if (args->depth > 0) |
321 | packet_buf_write(&req_buf, "deepen %d", args->depth); | |
508ea882 | 322 | if (args->deepen_since) { |
dddbad72 | 323 | timestamp_t max_age = approxidate(args->deepen_since); |
cb71f8bd | 324 | packet_buf_write(&req_buf, "deepen-since %"PRItime, max_age); |
508ea882 | 325 | } |
a45a2600 NTND |
326 | if (args->deepen_not) { |
327 | int i; | |
328 | for (i = 0; i < args->deepen_not->nr; i++) { | |
329 | struct string_list_item *s = args->deepen_not->items + i; | |
330 | packet_buf_write(&req_buf, "deepen-not %s", s->string); | |
331 | } | |
332 | } | |
640d8b72 JH |
333 | if (server_supports_filtering && args->filter_options.choice) |
334 | packet_buf_write(&req_buf, "filter %s", | |
335 | args->filter_options.filter_spec); | |
745f7a8c NTND |
336 | packet_buf_flush(&req_buf); |
337 | state_len = req_buf.len; | |
338 | ||
79891cb9 | 339 | if (args->deepen) { |
74543a04 | 340 | char *line; |
ae021d87 | 341 | const char *arg; |
1b283377 | 342 | struct object_id oid; |
745f7a8c NTND |
343 | |
344 | send_request(args, fd[1], &req_buf); | |
74543a04 | 345 | while ((line = packet_read_line(fd[0], NULL))) { |
ae021d87 | 346 | if (skip_prefix(line, "shallow ", &arg)) { |
1b283377 | 347 | if (get_oid_hex(arg, &oid)) |
1dd73e20 | 348 | die(_("invalid shallow line: %s"), line); |
19143f13 | 349 | register_shallow(the_repository, &oid); |
745f7a8c NTND |
350 | continue; |
351 | } | |
ae021d87 | 352 | if (skip_prefix(line, "unshallow ", &arg)) { |
1b283377 | 353 | if (get_oid_hex(arg, &oid)) |
1dd73e20 | 354 | die(_("invalid unshallow line: %s"), line); |
5abddd1e | 355 | if (!lookup_object(the_repository, oid.hash)) |
1dd73e20 | 356 | die(_("object not found: %s"), line); |
745f7a8c | 357 | /* make sure that it is parsed as shallow */ |
109cd76d | 358 | if (!parse_object(the_repository, &oid)) |
1dd73e20 | 359 | die(_("error in object: %s"), line); |
e92b848c | 360 | if (unregister_shallow(&oid)) |
1dd73e20 | 361 | die(_("no shallow found: %s"), line); |
745f7a8c NTND |
362 | continue; |
363 | } | |
1dd73e20 | 364 | die(_("expected shallow/unshallow, got %s"), line); |
745f7a8c NTND |
365 | } |
366 | } else if (!args->stateless_rpc) | |
367 | send_request(args, fd[1], &req_buf); | |
368 | ||
369 | if (!args->stateless_rpc) { | |
370 | /* If we aren't using the stateless-rpc interface | |
371 | * we don't need to retain the headers. | |
372 | */ | |
373 | strbuf_setlen(&req_buf, 0); | |
374 | state_len = 0; | |
375 | } | |
376 | ||
377 | flushes = 0; | |
378 | retval = -1; | |
88e2f9ed JT |
379 | if (args->no_dependents) |
380 | goto done; | |
ec062838 | 381 | while ((oid = negotiator->next(negotiator))) { |
1b283377 | 382 | packet_buf_write(&req_buf, "have %s\n", oid_to_hex(oid)); |
383 | print_verbose(args, "have %s", oid_to_hex(oid)); | |
745f7a8c NTND |
384 | in_vain++; |
385 | if (flush_at <= ++count) { | |
386 | int ack; | |
387 | ||
388 | packet_buf_flush(&req_buf); | |
389 | send_request(args, fd[1], &req_buf); | |
390 | strbuf_setlen(&req_buf, state_len); | |
391 | flushes++; | |
685fbd32 | 392 | flush_at = next_flush(args->stateless_rpc, count); |
745f7a8c NTND |
393 | |
394 | /* | |
395 | * We keep one window "ahead" of the other side, and | |
396 | * will wait for an ACK only on the next one | |
397 | */ | |
398 | if (!args->stateless_rpc && count == INITIAL_FLUSH) | |
399 | continue; | |
400 | ||
401 | consume_shallow_list(args, fd[0]); | |
402 | do { | |
1b283377 | 403 | ack = get_ack(fd[0], result_oid); |
0d789a5b | 404 | if (ack) |
1dd73e20 | 405 | print_verbose(args, _("got %s %d %s"), "ack", |
1b283377 | 406 | ack, oid_to_hex(result_oid)); |
745f7a8c NTND |
407 | switch (ack) { |
408 | case ACK: | |
409 | flushes = 0; | |
410 | multi_ack = 0; | |
411 | retval = 0; | |
412 | goto done; | |
413 | case ACK_common: | |
414 | case ACK_ready: | |
415 | case ACK_continue: { | |
416 | struct commit *commit = | |
c1f5eb49 SB |
417 | lookup_commit(the_repository, |
418 | result_oid); | |
d093bc75 | 419 | int was_common; |
3a2a1dc1 | 420 | |
745f7a8c | 421 | if (!commit) |
1b283377 | 422 | die(_("invalid commit %s"), oid_to_hex(result_oid)); |
ec062838 | 423 | was_common = negotiator->ack(negotiator, commit); |
745f7a8c NTND |
424 | if (args->stateless_rpc |
425 | && ack == ACK_common | |
d093bc75 | 426 | && !was_common) { |
745f7a8c NTND |
427 | /* We need to replay the have for this object |
428 | * on the next RPC request so the peer knows | |
429 | * it is in common with us. | |
430 | */ | |
1b283377 | 431 | const char *hex = oid_to_hex(result_oid); |
745f7a8c NTND |
432 | packet_buf_write(&req_buf, "have %s\n", hex); |
433 | state_len = req_buf.len; | |
06b3d386 JT |
434 | /* |
435 | * Reset in_vain because an ack | |
436 | * for this commit has not been | |
437 | * seen. | |
438 | */ | |
439 | in_vain = 0; | |
440 | } else if (!args->stateless_rpc | |
441 | || ack != ACK_common) | |
442 | in_vain = 0; | |
745f7a8c | 443 | retval = 0; |
745f7a8c | 444 | got_continue = 1; |
21bcf6e4 | 445 | if (ack == ACK_ready) |
745f7a8c | 446 | got_ready = 1; |
745f7a8c NTND |
447 | break; |
448 | } | |
449 | } | |
450 | } while (ack); | |
451 | flushes--; | |
452 | if (got_continue && MAX_IN_VAIN < in_vain) { | |
1dd73e20 | 453 | print_verbose(args, _("giving up")); |
745f7a8c NTND |
454 | break; /* give up */ |
455 | } | |
21bcf6e4 JT |
456 | if (got_ready) |
457 | break; | |
745f7a8c NTND |
458 | } |
459 | } | |
460 | done: | |
461 | if (!got_ready || !no_done) { | |
462 | packet_buf_write(&req_buf, "done\n"); | |
463 | send_request(args, fd[1], &req_buf); | |
464 | } | |
1dd73e20 | 465 | print_verbose(args, _("done")); |
745f7a8c NTND |
466 | if (retval != 0) { |
467 | multi_ack = 0; | |
468 | flushes++; | |
469 | } | |
470 | strbuf_release(&req_buf); | |
471 | ||
ff62eca7 NTND |
472 | if (!got_ready || !no_done) |
473 | consume_shallow_list(args, fd[0]); | |
745f7a8c | 474 | while (flushes || multi_ack) { |
1b283377 | 475 | int ack = get_ack(fd[0], result_oid); |
745f7a8c | 476 | if (ack) { |
1dd73e20 | 477 | print_verbose(args, _("got %s (%d) %s"), "ack", |
1b283377 | 478 | ack, oid_to_hex(result_oid)); |
745f7a8c NTND |
479 | if (ack == ACK) |
480 | return 0; | |
481 | multi_ack = 1; | |
482 | continue; | |
483 | } | |
484 | flushes--; | |
485 | } | |
486 | /* it is no error to fetch into a completely empty repo */ | |
487 | return count ? retval : 0; | |
488 | } | |
489 | ||
490 | static struct commit_list *complete; | |
491 | ||
1b283377 | 492 | static int mark_complete(const struct object_id *oid) |
745f7a8c | 493 | { |
109cd76d | 494 | struct object *o = parse_object(the_repository, oid); |
745f7a8c NTND |
495 | |
496 | while (o && o->type == OBJ_TAG) { | |
497 | struct tag *t = (struct tag *) o; | |
498 | if (!t->tagged) | |
499 | break; /* broken repository */ | |
500 | o->flags |= COMPLETE; | |
109cd76d | 501 | o = parse_object(the_repository, &t->tagged->oid); |
745f7a8c NTND |
502 | } |
503 | if (o && o->type == OBJ_COMMIT) { | |
504 | struct commit *commit = (struct commit *)o; | |
505 | if (!(commit->object.flags & COMPLETE)) { | |
506 | commit->object.flags |= COMPLETE; | |
16445242 | 507 | commit_list_insert(commit, &complete); |
745f7a8c NTND |
508 | } |
509 | } | |
510 | return 0; | |
511 | } | |
512 | ||
f8ee4d85 MH |
513 | static int mark_complete_oid(const char *refname, const struct object_id *oid, |
514 | int flag, void *cb_data) | |
515 | { | |
1b283377 | 516 | return mark_complete(oid); |
f8ee4d85 MH |
517 | } |
518 | ||
745f7a8c | 519 | static void mark_recent_complete_commits(struct fetch_pack_args *args, |
dddbad72 | 520 | timestamp_t cutoff) |
745f7a8c NTND |
521 | { |
522 | while (complete && cutoff <= complete->item->date) { | |
1dd73e20 | 523 | print_verbose(args, _("Marking %s as complete"), |
0d789a5b | 524 | oid_to_hex(&complete->item->object.oid)); |
745f7a8c NTND |
525 | pop_most_recent_commit(&complete, COMPLETE); |
526 | } | |
527 | } | |
528 | ||
fdb69d33 JT |
529 | static void add_refs_to_oidset(struct oidset *oids, struct ref *refs) |
530 | { | |
531 | for (; refs; refs = refs->next) | |
532 | oidset_insert(oids, &refs->old_oid); | |
533 | } | |
534 | ||
535 | static int tip_oids_contain(struct oidset *tip_oids, | |
536 | struct ref *unmatched, struct ref *newlist, | |
537 | const struct object_id *id) | |
538 | { | |
539 | /* | |
540 | * Note that this only looks at the ref lists the first time it's | |
541 | * called. This works out in filter_refs() because even though it may | |
542 | * add to "newlist" between calls, the additions will always be for | |
543 | * oids that are already in the set. | |
544 | */ | |
9e6fabde | 545 | if (!tip_oids->map.map.tablesize) { |
fdb69d33 JT |
546 | add_refs_to_oidset(tip_oids, unmatched); |
547 | add_refs_to_oidset(tip_oids, newlist); | |
548 | } | |
549 | return oidset_contains(tip_oids, id); | |
550 | } | |
551 | ||
745f7a8c | 552 | static void filter_refs(struct fetch_pack_args *args, |
f2db854d JH |
553 | struct ref **refs, |
554 | struct ref **sought, int nr_sought) | |
745f7a8c NTND |
555 | { |
556 | struct ref *newlist = NULL; | |
557 | struct ref **newtail = &newlist; | |
fdb69d33 | 558 | struct ref *unmatched = NULL; |
745f7a8c | 559 | struct ref *ref, *next; |
fdb69d33 | 560 | struct oidset tip_oids = OIDSET_INIT; |
f2db854d | 561 | int i; |
745f7a8c | 562 | |
f2db854d | 563 | i = 0; |
745f7a8c NTND |
564 | for (ref = *refs; ref; ref = next) { |
565 | int keep = 0; | |
566 | next = ref->next; | |
f2db854d | 567 | |
50e19a83 | 568 | if (starts_with(ref->name, "refs/") && |
4c224081 | 569 | check_refname_format(ref->name, 0)) |
745f7a8c NTND |
570 | ; /* trash */ |
571 | else { | |
f2db854d JH |
572 | while (i < nr_sought) { |
573 | int cmp = strcmp(ref->name, sought[i]->name); | |
745f7a8c NTND |
574 | if (cmp < 0) |
575 | break; /* definitely do not have it */ | |
576 | else if (cmp == 0) { | |
577 | keep = 1; /* definitely have it */ | |
d56583de | 578 | sought[i]->match_status = REF_MATCHED; |
745f7a8c | 579 | } |
f2db854d | 580 | i++; |
745f7a8c | 581 | } |
745f7a8c | 582 | |
e9502c0a JK |
583 | if (!keep && args->fetch_all && |
584 | (!args->deepen || !starts_with(ref->name, "refs/tags/"))) | |
585 | keep = 1; | |
586 | } | |
745f7a8c NTND |
587 | |
588 | if (keep) { | |
589 | *newtail = ref; | |
590 | ref->next = NULL; | |
591 | newtail = &ref->next; | |
592 | } else { | |
fdb69d33 JT |
593 | ref->next = unmatched; |
594 | unmatched = ref; | |
745f7a8c NTND |
595 | } |
596 | } | |
597 | ||
6e7b66ee | 598 | /* Append unmatched requests to the list */ |
d56583de | 599 | for (i = 0; i < nr_sought; i++) { |
1b283377 | 600 | struct object_id oid; |
601 | const char *p; | |
b7916422 | 602 | |
d56583de MM |
603 | ref = sought[i]; |
604 | if (ref->match_status != REF_NOT_MATCHED) | |
605 | continue; | |
1b283377 | 606 | if (parse_oid_hex(ref->name, &oid, &p) || |
607 | *p != '\0' || | |
608 | oidcmp(&oid, &ref->old_oid)) | |
d56583de | 609 | continue; |
6e7b66ee | 610 | |
d56583de | 611 | if ((allow_unadvertised_object_request & |
fdb69d33 JT |
612 | (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1)) || |
613 | tip_oids_contain(&tip_oids, unmatched, newlist, | |
614 | &ref->old_oid)) { | |
d56583de | 615 | ref->match_status = REF_MATCHED; |
c3c17bf1 JK |
616 | *newtail = copy_ref(ref); |
617 | newtail = &(*newtail)->next; | |
d56583de MM |
618 | } else { |
619 | ref->match_status = REF_UNADVERTISED_NOT_ALLOWED; | |
6e7b66ee JH |
620 | } |
621 | } | |
fdb69d33 JT |
622 | |
623 | oidset_clear(&tip_oids); | |
624 | for (ref = unmatched; ref; ref = next) { | |
625 | next = ref->next; | |
626 | free(ref); | |
627 | } | |
628 | ||
745f7a8c NTND |
629 | *refs = newlist; |
630 | } | |
631 | ||
ec062838 | 632 | static void mark_alternate_complete(struct fetch_negotiator *unused, |
d30fe89c | 633 | struct object *obj) |
745f7a8c | 634 | { |
1b283377 | 635 | mark_complete(&obj->oid); |
745f7a8c NTND |
636 | } |
637 | ||
024aa469 TI |
638 | struct loose_object_iter { |
639 | struct oidset *loose_object_set; | |
640 | struct ref *refs; | |
641 | }; | |
642 | ||
643 | /* | |
644 | * If the number of refs is not larger than the number of loose objects, | |
645 | * this function stops inserting. | |
646 | */ | |
647 | static int add_loose_objects_to_set(const struct object_id *oid, | |
648 | const char *path, | |
649 | void *data) | |
650 | { | |
651 | struct loose_object_iter *iter = data; | |
652 | oidset_insert(iter->loose_object_set, oid); | |
653 | if (iter->refs == NULL) | |
654 | return 1; | |
655 | ||
656 | iter->refs = iter->refs->next; | |
657 | return 0; | |
658 | } | |
659 | ||
34c29034 JT |
660 | /* |
661 | * Mark recent commits available locally and reachable from a local ref as | |
662 | * COMPLETE. If args->no_dependents is false, also mark COMPLETE remote refs as | |
663 | * COMMON_REF (otherwise, we are not planning to participate in negotiation, and | |
664 | * thus do not need COMMON_REF marks). | |
665 | * | |
666 | * The cutoff time for recency is determined by this heuristic: it is the | |
667 | * earliest commit time of the objects in refs that are commits and that we know | |
668 | * the commit time of. | |
669 | */ | |
ec062838 | 670 | static void mark_complete_and_common_ref(struct fetch_negotiator *negotiator, |
d30fe89c | 671 | struct fetch_pack_args *args, |
34c29034 | 672 | struct ref **refs) |
745f7a8c NTND |
673 | { |
674 | struct ref *ref; | |
a1c6d7c1 | 675 | int old_save_commit_buffer = save_commit_buffer; |
dddbad72 | 676 | timestamp_t cutoff = 0; |
024aa469 TI |
677 | struct oidset loose_oid_set = OIDSET_INIT; |
678 | int use_oidset = 0; | |
679 | struct loose_object_iter iter = {&loose_oid_set, *refs}; | |
680 | ||
681 | /* Enumerate all loose objects or know refs are not so many. */ | |
682 | use_oidset = !for_each_loose_object(add_loose_objects_to_set, | |
683 | &iter, 0); | |
745f7a8c NTND |
684 | |
685 | save_commit_buffer = 0; | |
686 | ||
687 | for (ref = *refs; ref; ref = ref->next) { | |
688 | struct object *o; | |
024aa469 | 689 | unsigned int flags = OBJECT_INFO_QUICK; |
745f7a8c | 690 | |
024aa469 TI |
691 | if (use_oidset && |
692 | !oidset_contains(&loose_oid_set, &ref->old_oid)) { | |
693 | /* | |
694 | * I know this does not exist in the loose form, | |
695 | * so check if it exists in a non-loose form. | |
696 | */ | |
697 | flags |= OBJECT_INFO_IGNORE_LOOSE; | |
698 | } | |
012a1bb5 | 699 | |
024aa469 TI |
700 | if (!has_object_file_with_flags(&ref->old_oid, flags)) |
701 | continue; | |
109cd76d | 702 | o = parse_object(the_repository, &ref->old_oid); |
745f7a8c NTND |
703 | if (!o) |
704 | continue; | |
705 | ||
706 | /* We already have it -- which may mean that we were | |
707 | * in sync with the other side at some time after | |
708 | * that (it is OK if we guess wrong here). | |
709 | */ | |
710 | if (o->type == OBJ_COMMIT) { | |
711 | struct commit *commit = (struct commit *)o; | |
712 | if (!cutoff || cutoff < commit->date) | |
713 | cutoff = commit->date; | |
714 | } | |
715 | } | |
716 | ||
024aa469 TI |
717 | oidset_clear(&loose_oid_set); |
718 | ||
12f19a98 JT |
719 | if (!args->deepen) { |
720 | for_each_ref(mark_complete_oid, NULL); | |
721 | for_each_cached_alternate(NULL, mark_alternate_complete); | |
722 | commit_list_sort_by_date(&complete); | |
723 | if (cutoff) | |
724 | mark_recent_complete_commits(args, cutoff); | |
725 | } | |
745f7a8c | 726 | |
12f19a98 JT |
727 | /* |
728 | * Mark all complete remote refs as common refs. | |
729 | * Don't mark them common yet; the server has to be told so first. | |
730 | */ | |
731 | for (ref = *refs; ref; ref = ref->next) { | |
732 | struct object *o = deref_tag(the_repository, | |
733 | lookup_object(the_repository, | |
734 | ref->old_oid.hash), | |
735 | NULL, 0); | |
745f7a8c | 736 | |
12f19a98 JT |
737 | if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE)) |
738 | continue; | |
745f7a8c | 739 | |
12f19a98 JT |
740 | negotiator->known_common(negotiator, |
741 | (struct commit *)o); | |
745f7a8c NTND |
742 | } |
743 | ||
34c29034 JT |
744 | save_commit_buffer = old_save_commit_buffer; |
745 | } | |
746 | ||
747 | /* | |
748 | * Returns 1 if every object pointed to by the given remote refs is available | |
749 | * locally and reachable from a local ref, and 0 otherwise. | |
750 | */ | |
751 | static int everything_local(struct fetch_pack_args *args, | |
752 | struct ref **refs) | |
753 | { | |
754 | struct ref *ref; | |
755 | int retval; | |
745f7a8c NTND |
756 | |
757 | for (retval = 1, ref = *refs; ref ; ref = ref->next) { | |
1b283377 | 758 | const struct object_id *remote = &ref->old_oid; |
745f7a8c NTND |
759 | struct object *o; |
760 | ||
5abddd1e | 761 | o = lookup_object(the_repository, remote->hash); |
745f7a8c NTND |
762 | if (!o || !(o->flags & COMPLETE)) { |
763 | retval = 0; | |
1b283377 | 764 | print_verbose(args, "want %s (%s)", oid_to_hex(remote), |
0d789a5b | 765 | ref->name); |
745f7a8c NTND |
766 | continue; |
767 | } | |
1b283377 | 768 | print_verbose(args, _("already have %s (%s)"), oid_to_hex(remote), |
0d789a5b | 769 | ref->name); |
745f7a8c | 770 | } |
a1c6d7c1 | 771 | |
745f7a8c NTND |
772 | return retval; |
773 | } | |
774 | ||
775 | static int sideband_demux(int in, int out, void *data) | |
776 | { | |
777 | int *xd = data; | |
9ff18faf | 778 | int ret; |
745f7a8c | 779 | |
9ff18faf | 780 | ret = recv_sideband("fetch-pack", xd[0], out); |
745f7a8c NTND |
781 | close(out); |
782 | return ret; | |
783 | } | |
784 | ||
785 | static int get_pack(struct fetch_pack_args *args, | |
786 | int xd[2], char **pack_lockfile) | |
787 | { | |
788 | struct async demux; | |
745f7a8c | 789 | int do_keep = args->keep_pack; |
984a43b9 JK |
790 | const char *cmd_name; |
791 | struct pack_header header; | |
792 | int pass_header = 0; | |
d3180279 | 793 | struct child_process cmd = CHILD_PROCESS_INIT; |
c6807a40 | 794 | int ret; |
745f7a8c NTND |
795 | |
796 | memset(&demux, 0, sizeof(demux)); | |
797 | if (use_sideband) { | |
798 | /* xd[] is talking with upload-pack; subprocess reads from | |
799 | * xd[0], spits out band#2 to stderr, and feeds us band#1 | |
800 | * through demux->out. | |
801 | */ | |
802 | demux.proc = sideband_demux; | |
803 | demux.data = xd; | |
804 | demux.out = -1; | |
df857572 | 805 | demux.isolate_sigpipe = 1; |
745f7a8c | 806 | if (start_async(&demux)) |
1dd73e20 | 807 | die(_("fetch-pack: unable to fork off sideband demultiplexer")); |
745f7a8c NTND |
808 | } |
809 | else | |
810 | demux.out = xd[0]; | |
811 | ||
745f7a8c | 812 | if (!args->keep_pack && unpack_limit) { |
745f7a8c NTND |
813 | |
814 | if (read_pack_header(demux.out, &header)) | |
1dd73e20 | 815 | die(_("protocol error: bad pack header")); |
984a43b9 | 816 | pass_header = 1; |
745f7a8c NTND |
817 | if (ntohl(header.hdr_entries) < unpack_limit) |
818 | do_keep = 0; | |
819 | else | |
820 | do_keep = 1; | |
821 | } | |
822 | ||
6035d6aa | 823 | if (alternate_shallow_file) { |
984a43b9 JK |
824 | argv_array_push(&cmd.args, "--shallow-file"); |
825 | argv_array_push(&cmd.args, alternate_shallow_file); | |
6035d6aa NTND |
826 | } |
827 | ||
88e2f9ed | 828 | if (do_keep || args->from_promisor) { |
745f7a8c NTND |
829 | if (pack_lockfile) |
830 | cmd.out = -1; | |
984a43b9 JK |
831 | cmd_name = "index-pack"; |
832 | argv_array_push(&cmd.args, cmd_name); | |
833 | argv_array_push(&cmd.args, "--stdin"); | |
745f7a8c | 834 | if (!args->quiet && !args->no_progress) |
984a43b9 | 835 | argv_array_push(&cmd.args, "-v"); |
745f7a8c | 836 | if (args->use_thin_pack) |
984a43b9 | 837 | argv_array_push(&cmd.args, "--fix-thin"); |
88e2f9ed | 838 | if (do_keep && (args->lock_pack || unpack_limit)) { |
da25bdb7 | 839 | char hostname[HOST_NAME_MAX + 1]; |
5781a9a2 | 840 | if (xgethostname(hostname, sizeof(hostname))) |
984a43b9 JK |
841 | xsnprintf(hostname, sizeof(hostname), "localhost"); |
842 | argv_array_pushf(&cmd.args, | |
843 | "--keep=fetch-pack %"PRIuMAX " on %s", | |
844 | (uintmax_t)getpid(), hostname); | |
745f7a8c | 845 | } |
c6807a40 | 846 | if (args->check_self_contained_and_connected) |
984a43b9 | 847 | argv_array_push(&cmd.args, "--check-self-contained-and-connected"); |
88e2f9ed JT |
848 | if (args->from_promisor) |
849 | argv_array_push(&cmd.args, "--promisor"); | |
745f7a8c NTND |
850 | } |
851 | else { | |
984a43b9 JK |
852 | cmd_name = "unpack-objects"; |
853 | argv_array_push(&cmd.args, cmd_name); | |
745f7a8c | 854 | if (args->quiet || args->no_progress) |
984a43b9 | 855 | argv_array_push(&cmd.args, "-q"); |
c6807a40 | 856 | args->check_self_contained_and_connected = 0; |
745f7a8c | 857 | } |
984a43b9 JK |
858 | |
859 | if (pass_header) | |
860 | argv_array_pushf(&cmd.args, "--pack_header=%"PRIu32",%"PRIu32, | |
861 | ntohl(header.hdr_version), | |
862 | ntohl(header.hdr_entries)); | |
745f7a8c NTND |
863 | if (fetch_fsck_objects >= 0 |
864 | ? fetch_fsck_objects | |
865 | : transfer_fsck_objects >= 0 | |
866 | ? transfer_fsck_objects | |
98a2ea46 JT |
867 | : 0) { |
868 | if (args->from_promisor) | |
869 | /* | |
870 | * We cannot use --strict in index-pack because it | |
871 | * checks both broken objects and links, but we only | |
872 | * want to check for broken objects. | |
873 | */ | |
874 | argv_array_push(&cmd.args, "--fsck-objects"); | |
875 | else | |
1362df0d ÆAB |
876 | argv_array_pushf(&cmd.args, "--strict%s", |
877 | fsck_msg_types.buf); | |
98a2ea46 | 878 | } |
745f7a8c NTND |
879 | |
880 | cmd.in = demux.out; | |
881 | cmd.git_cmd = 1; | |
882 | if (start_command(&cmd)) | |
1dd73e20 | 883 | die(_("fetch-pack: unable to fork off %s"), cmd_name); |
745f7a8c NTND |
884 | if (do_keep && pack_lockfile) { |
885 | *pack_lockfile = index_pack_lockfile(cmd.out); | |
886 | close(cmd.out); | |
887 | } | |
888 | ||
37cb1dd6 JL |
889 | if (!use_sideband) |
890 | /* Closed by start_command() */ | |
891 | xd[0] = -1; | |
892 | ||
c6807a40 NTND |
893 | ret = finish_command(&cmd); |
894 | if (!ret || (args->check_self_contained_and_connected && ret == 1)) | |
895 | args->self_contained_and_connected = | |
896 | args->check_self_contained_and_connected && | |
897 | ret == 0; | |
898 | else | |
1dd73e20 | 899 | die(_("%s failed"), cmd_name); |
745f7a8c | 900 | if (use_sideband && finish_async(&demux)) |
1dd73e20 | 901 | die(_("error in sideband demultiplexer")); |
745f7a8c NTND |
902 | return 0; |
903 | } | |
904 | ||
f2db854d JH |
905 | static int cmp_ref_by_name(const void *a_, const void *b_) |
906 | { | |
907 | const struct ref *a = *((const struct ref **)a_); | |
908 | const struct ref *b = *((const struct ref **)b_); | |
909 | return strcmp(a->name, b->name); | |
910 | } | |
911 | ||
745f7a8c NTND |
912 | static struct ref *do_fetch_pack(struct fetch_pack_args *args, |
913 | int fd[2], | |
914 | const struct ref *orig_ref, | |
f2db854d | 915 | struct ref **sought, int nr_sought, |
beea4152 | 916 | struct shallow_info *si, |
745f7a8c NTND |
917 | char **pack_lockfile) |
918 | { | |
919 | struct ref *ref = copy_ref_list(orig_ref); | |
1b283377 | 920 | struct object_id oid; |
745f7a8c NTND |
921 | const char *agent_feature; |
922 | int agent_len; | |
ec062838 | 923 | struct fetch_negotiator negotiator; |
42cc7485 | 924 | fetch_negotiator_init(&negotiator, negotiation_algorithm); |
745f7a8c NTND |
925 | |
926 | sort_ref_list(&ref, ref_compare_name); | |
9ed0d8d6 | 927 | QSORT(sought, nr_sought, cmp_ref_by_name); |
745f7a8c | 928 | |
c8813487 | 929 | if ((args->depth > 0 || is_repository_shallow(the_repository)) && !server_supports("shallow")) |
1dd73e20 | 930 | die(_("Server does not support shallow clients")); |
a45a2600 | 931 | if (args->depth > 0 || args->deepen_since || args->deepen_not) |
79891cb9 | 932 | args->deepen = 1; |
745f7a8c | 933 | if (server_supports("multi_ack_detailed")) { |
1dd73e20 | 934 | print_verbose(args, _("Server supports multi_ack_detailed")); |
745f7a8c NTND |
935 | multi_ack = 2; |
936 | if (server_supports("no-done")) { | |
1dd73e20 | 937 | print_verbose(args, _("Server supports no-done")); |
745f7a8c NTND |
938 | if (args->stateless_rpc) |
939 | no_done = 1; | |
940 | } | |
941 | } | |
942 | else if (server_supports("multi_ack")) { | |
1dd73e20 | 943 | print_verbose(args, _("Server supports multi_ack")); |
745f7a8c NTND |
944 | multi_ack = 1; |
945 | } | |
946 | if (server_supports("side-band-64k")) { | |
1dd73e20 | 947 | print_verbose(args, _("Server supports side-band-64k")); |
745f7a8c NTND |
948 | use_sideband = 2; |
949 | } | |
950 | else if (server_supports("side-band")) { | |
1dd73e20 | 951 | print_verbose(args, _("Server supports side-band")); |
745f7a8c NTND |
952 | use_sideband = 1; |
953 | } | |
6e7b66ee | 954 | if (server_supports("allow-tip-sha1-in-want")) { |
1dd73e20 | 955 | print_verbose(args, _("Server supports allow-tip-sha1-in-want")); |
7199c093 | 956 | allow_unadvertised_object_request |= ALLOW_TIP_SHA1; |
6e7b66ee | 957 | } |
68ee6289 | 958 | if (server_supports("allow-reachable-sha1-in-want")) { |
1dd73e20 | 959 | print_verbose(args, _("Server supports allow-reachable-sha1-in-want")); |
68ee6289 FM |
960 | allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1; |
961 | } | |
745f7a8c NTND |
962 | if (!server_supports("thin-pack")) |
963 | args->use_thin_pack = 0; | |
964 | if (!server_supports("no-progress")) | |
965 | args->no_progress = 0; | |
966 | if (!server_supports("include-tag")) | |
967 | args->include_tag = 0; | |
0d789a5b | 968 | if (server_supports("ofs-delta")) |
1dd73e20 | 969 | print_verbose(args, _("Server supports ofs-delta")); |
0d789a5b | 970 | else |
745f7a8c NTND |
971 | prefer_ofs_delta = 0; |
972 | ||
640d8b72 JH |
973 | if (server_supports("filter")) { |
974 | server_supports_filtering = 1; | |
975 | print_verbose(args, _("Server supports filter")); | |
976 | } else if (args->filter_options.choice) { | |
977 | warning("filtering not recognized by server, ignoring"); | |
978 | } | |
979 | ||
745f7a8c NTND |
980 | if ((agent_feature = server_feature_value("agent", &agent_len))) { |
981 | agent_supported = 1; | |
0d789a5b | 982 | if (agent_len) |
1dd73e20 | 983 | print_verbose(args, _("Server version is %.*s"), |
0d789a5b | 984 | agent_len, agent_feature); |
745f7a8c | 985 | } |
508ea882 NTND |
986 | if (server_supports("deepen-since")) |
987 | deepen_since_ok = 1; | |
988 | else if (args->deepen_since) | |
989 | die(_("Server does not support --shallow-since")); | |
a45a2600 NTND |
990 | if (server_supports("deepen-not")) |
991 | deepen_not_ok = 1; | |
992 | else if (args->deepen_not) | |
993 | die(_("Server does not support --shallow-exclude")); | |
cccf74e2 NTND |
994 | if (!server_supports("deepen-relative") && args->deepen_relative) |
995 | die(_("Server does not support --deepen")); | |
745f7a8c | 996 | |
12f19a98 JT |
997 | if (!args->no_dependents) { |
998 | mark_complete_and_common_ref(&negotiator, args, &ref); | |
999 | filter_refs(args, &ref, sought, nr_sought); | |
1000 | if (everything_local(args, &ref)) { | |
1001 | packet_flush(fd[1]); | |
1002 | goto all_done; | |
1003 | } | |
1004 | } else { | |
1005 | filter_refs(args, &ref, sought, nr_sought); | |
745f7a8c | 1006 | } |
ec062838 | 1007 | if (find_common(&negotiator, args, fd, &oid, ref) < 0) |
745f7a8c NTND |
1008 | if (!args->keep_pack) |
1009 | /* When cloning, it is not unusual to have | |
1010 | * no common commit. | |
1011 | */ | |
1dd73e20 | 1012 | warning(_("no common commits")); |
745f7a8c NTND |
1013 | |
1014 | if (args->stateless_rpc) | |
1015 | packet_flush(fd[1]); | |
79891cb9 | 1016 | if (args->deepen) |
1a30f5a2 NTND |
1017 | setup_alternate_shallow(&shallow_lock, &alternate_shallow_file, |
1018 | NULL); | |
4820a33b | 1019 | else if (si->nr_ours || si->nr_theirs) |
beea4152 | 1020 | alternate_shallow_file = setup_temporary_shallow(si->shallow); |
6da8bdcb NTND |
1021 | else |
1022 | alternate_shallow_file = NULL; | |
745f7a8c | 1023 | if (get_pack(args, fd, pack_lockfile)) |
1dd73e20 | 1024 | die(_("git fetch-pack: fetch failed.")); |
745f7a8c NTND |
1025 | |
1026 | all_done: | |
ec062838 | 1027 | negotiator.release(&negotiator); |
745f7a8c NTND |
1028 | return ref; |
1029 | } | |
1030 | ||
f7e20501 BW |
1031 | static void add_shallow_requests(struct strbuf *req_buf, |
1032 | const struct fetch_pack_args *args) | |
1033 | { | |
00624d60 | 1034 | if (is_repository_shallow(the_repository)) |
f7e20501 BW |
1035 | write_shallow_commits(req_buf, 1, NULL); |
1036 | if (args->depth > 0) | |
1037 | packet_buf_write(req_buf, "deepen %d", args->depth); | |
1038 | if (args->deepen_since) { | |
1039 | timestamp_t max_age = approxidate(args->deepen_since); | |
1040 | packet_buf_write(req_buf, "deepen-since %"PRItime, max_age); | |
1041 | } | |
1042 | if (args->deepen_not) { | |
1043 | int i; | |
1044 | for (i = 0; i < args->deepen_not->nr; i++) { | |
1045 | struct string_list_item *s = args->deepen_not->items + i; | |
1046 | packet_buf_write(req_buf, "deepen-not %s", s->string); | |
1047 | } | |
1048 | } | |
1049 | } | |
1050 | ||
12f19a98 | 1051 | static void add_wants(int no_dependents, const struct ref *wants, struct strbuf *req_buf) |
685fbd32 | 1052 | { |
73302051 BW |
1053 | int use_ref_in_want = server_supports_feature("fetch", "ref-in-want", 0); |
1054 | ||
685fbd32 BW |
1055 | for ( ; wants ; wants = wants->next) { |
1056 | const struct object_id *remote = &wants->old_oid; | |
685fbd32 BW |
1057 | struct object *o; |
1058 | ||
1059 | /* | |
1060 | * If that object is complete (i.e. it is an ancestor of a | |
1061 | * local ref), we tell them we have it but do not have to | |
1062 | * tell them about its ancestors, which they already know | |
1063 | * about. | |
1064 | * | |
1065 | * We use lookup_object here because we are only | |
1066 | * interested in the case we *know* the object is | |
1067 | * reachable and we have already scanned it. | |
12f19a98 JT |
1068 | * |
1069 | * Do this only if args->no_dependents is false (if it is true, | |
1070 | * we cannot trust the object flags). | |
685fbd32 | 1071 | */ |
12f19a98 JT |
1072 | if (!no_dependents && |
1073 | ((o = lookup_object(the_repository, remote->hash)) != NULL) && | |
685fbd32 BW |
1074 | (o->flags & COMPLETE)) { |
1075 | continue; | |
1076 | } | |
1077 | ||
73302051 BW |
1078 | if (!use_ref_in_want || wants->exact_oid) |
1079 | packet_buf_write(req_buf, "want %s\n", oid_to_hex(remote)); | |
1080 | else | |
1081 | packet_buf_write(req_buf, "want-ref %s\n", wants->name); | |
685fbd32 BW |
1082 | } |
1083 | } | |
1084 | ||
1085 | static void add_common(struct strbuf *req_buf, struct oidset *common) | |
1086 | { | |
1087 | struct oidset_iter iter; | |
1088 | const struct object_id *oid; | |
1089 | oidset_iter_init(common, &iter); | |
1090 | ||
1091 | while ((oid = oidset_iter_next(&iter))) { | |
1092 | packet_buf_write(req_buf, "have %s\n", oid_to_hex(oid)); | |
1093 | } | |
1094 | } | |
1095 | ||
ec062838 JT |
1096 | static int add_haves(struct fetch_negotiator *negotiator, |
1097 | struct strbuf *req_buf, | |
d30fe89c | 1098 | int *haves_to_send, int *in_vain) |
685fbd32 BW |
1099 | { |
1100 | int ret = 0; | |
1101 | int haves_added = 0; | |
1102 | const struct object_id *oid; | |
1103 | ||
ec062838 | 1104 | while ((oid = negotiator->next(negotiator))) { |
685fbd32 BW |
1105 | packet_buf_write(req_buf, "have %s\n", oid_to_hex(oid)); |
1106 | if (++haves_added >= *haves_to_send) | |
1107 | break; | |
1108 | } | |
1109 | ||
1110 | *in_vain += haves_added; | |
1111 | if (!haves_added || *in_vain >= MAX_IN_VAIN) { | |
1112 | /* Send Done */ | |
1113 | packet_buf_write(req_buf, "done\n"); | |
1114 | ret = 1; | |
1115 | } | |
1116 | ||
1117 | /* Increase haves to send on next round */ | |
1118 | *haves_to_send = next_flush(1, *haves_to_send); | |
1119 | ||
1120 | return ret; | |
1121 | } | |
1122 | ||
ec062838 | 1123 | static int send_fetch_request(struct fetch_negotiator *negotiator, int fd_out, |
d30fe89c | 1124 | const struct fetch_pack_args *args, |
685fbd32 BW |
1125 | const struct ref *wants, struct oidset *common, |
1126 | int *haves_to_send, int *in_vain) | |
1127 | { | |
1128 | int ret = 0; | |
1129 | struct strbuf req_buf = STRBUF_INIT; | |
1130 | ||
1131 | if (server_supports_v2("fetch", 1)) | |
1132 | packet_buf_write(&req_buf, "command=fetch"); | |
1133 | if (server_supports_v2("agent", 0)) | |
1134 | packet_buf_write(&req_buf, "agent=%s", git_user_agent_sanitized()); | |
5e3548ef BW |
1135 | if (args->server_options && args->server_options->nr && |
1136 | server_supports_v2("server-option", 1)) { | |
1137 | int i; | |
1138 | for (i = 0; i < args->server_options->nr; i++) | |
1139 | packet_write_fmt(fd_out, "server-option=%s", | |
1140 | args->server_options->items[i].string); | |
1141 | } | |
685fbd32 BW |
1142 | |
1143 | packet_buf_delim(&req_buf); | |
1144 | if (args->use_thin_pack) | |
1145 | packet_buf_write(&req_buf, "thin-pack"); | |
1146 | if (args->no_progress) | |
1147 | packet_buf_write(&req_buf, "no-progress"); | |
1148 | if (args->include_tag) | |
1149 | packet_buf_write(&req_buf, "include-tag"); | |
1150 | if (prefer_ofs_delta) | |
1151 | packet_buf_write(&req_buf, "ofs-delta"); | |
1152 | ||
f7e20501 BW |
1153 | /* Add shallow-info and deepen request */ |
1154 | if (server_supports_feature("fetch", "shallow", 0)) | |
1155 | add_shallow_requests(&req_buf, args); | |
00624d60 | 1156 | else if (is_repository_shallow(the_repository) || args->deepen) |
f7e20501 BW |
1157 | die(_("Server does not support shallow requests")); |
1158 | ||
ba95710a JT |
1159 | /* Add filter */ |
1160 | if (server_supports_feature("fetch", "filter", 0) && | |
1161 | args->filter_options.choice) { | |
1162 | print_verbose(args, _("Server supports filter")); | |
1163 | packet_buf_write(&req_buf, "filter %s", | |
1164 | args->filter_options.filter_spec); | |
1165 | } else if (args->filter_options.choice) { | |
1166 | warning("filtering not recognized by server, ignoring"); | |
1167 | } | |
1168 | ||
685fbd32 | 1169 | /* add wants */ |
12f19a98 | 1170 | add_wants(args->no_dependents, wants, &req_buf); |
685fbd32 | 1171 | |
ba95710a JT |
1172 | if (args->no_dependents) { |
1173 | packet_buf_write(&req_buf, "done"); | |
1174 | ret = 1; | |
1175 | } else { | |
1176 | /* Add all of the common commits we've found in previous rounds */ | |
1177 | add_common(&req_buf, common); | |
685fbd32 | 1178 | |
ba95710a | 1179 | /* Add initial haves */ |
ec062838 | 1180 | ret = add_haves(negotiator, &req_buf, haves_to_send, in_vain); |
ba95710a | 1181 | } |
685fbd32 BW |
1182 | |
1183 | /* Send request */ | |
1184 | packet_buf_flush(&req_buf); | |
1185 | write_or_die(fd_out, req_buf.buf, req_buf.len); | |
1186 | ||
1187 | strbuf_release(&req_buf); | |
1188 | return ret; | |
1189 | } | |
1190 | ||
1191 | /* | |
1192 | * Processes a section header in a server's response and checks if it matches | |
1193 | * `section`. If the value of `peek` is 1, the header line will be peeked (and | |
1194 | * not consumed); if 0, the line will be consumed and the function will die if | |
1195 | * the section header doesn't match what was expected. | |
1196 | */ | |
1197 | static int process_section_header(struct packet_reader *reader, | |
1198 | const char *section, int peek) | |
1199 | { | |
1200 | int ret; | |
1201 | ||
1202 | if (packet_reader_peek(reader) != PACKET_READ_NORMAL) | |
bbb19a8b | 1203 | die(_("error reading section header '%s'"), section); |
685fbd32 BW |
1204 | |
1205 | ret = !strcmp(reader->line, section); | |
1206 | ||
1207 | if (!peek) { | |
1208 | if (!ret) | |
bbb19a8b | 1209 | die(_("expected '%s', received '%s'"), |
685fbd32 BW |
1210 | section, reader->line); |
1211 | packet_reader_read(reader); | |
1212 | } | |
1213 | ||
1214 | return ret; | |
1215 | } | |
1216 | ||
ec062838 | 1217 | static int process_acks(struct fetch_negotiator *negotiator, |
d30fe89c JT |
1218 | struct packet_reader *reader, |
1219 | struct oidset *common) | |
685fbd32 BW |
1220 | { |
1221 | /* received */ | |
1222 | int received_ready = 0; | |
1223 | int received_ack = 0; | |
1224 | ||
1225 | process_section_header(reader, "acknowledgments", 0); | |
1226 | while (packet_reader_read(reader) == PACKET_READ_NORMAL) { | |
1227 | const char *arg; | |
1228 | ||
1229 | if (!strcmp(reader->line, "NAK")) | |
1230 | continue; | |
1231 | ||
1232 | if (skip_prefix(reader->line, "ACK ", &arg)) { | |
1233 | struct object_id oid; | |
1234 | if (!get_oid_hex(arg, &oid)) { | |
1235 | struct commit *commit; | |
1236 | oidset_insert(common, &oid); | |
c1f5eb49 | 1237 | commit = lookup_commit(the_repository, &oid); |
ec062838 | 1238 | negotiator->ack(negotiator, commit); |
685fbd32 BW |
1239 | } |
1240 | continue; | |
1241 | } | |
1242 | ||
1243 | if (!strcmp(reader->line, "ready")) { | |
685fbd32 BW |
1244 | received_ready = 1; |
1245 | continue; | |
1246 | } | |
1247 | ||
bbb19a8b | 1248 | die(_("unexpected acknowledgment line: '%s'"), reader->line); |
685fbd32 BW |
1249 | } |
1250 | ||
1251 | if (reader->status != PACKET_READ_FLUSH && | |
1252 | reader->status != PACKET_READ_DELIM) | |
bbb19a8b | 1253 | die(_("error processing acks: %d"), reader->status); |
685fbd32 BW |
1254 | |
1255 | /* return 0 if no common, 1 if there are common, or 2 if ready */ | |
1256 | return received_ready ? 2 : (received_ack ? 1 : 0); | |
1257 | } | |
1258 | ||
f7e20501 BW |
1259 | static void receive_shallow_info(struct fetch_pack_args *args, |
1260 | struct packet_reader *reader) | |
1261 | { | |
1262 | process_section_header(reader, "shallow-info", 0); | |
1263 | while (packet_reader_read(reader) == PACKET_READ_NORMAL) { | |
1264 | const char *arg; | |
1265 | struct object_id oid; | |
1266 | ||
1267 | if (skip_prefix(reader->line, "shallow ", &arg)) { | |
1268 | if (get_oid_hex(arg, &oid)) | |
1269 | die(_("invalid shallow line: %s"), reader->line); | |
00624d60 | 1270 | register_shallow(the_repository, &oid); |
f7e20501 BW |
1271 | continue; |
1272 | } | |
1273 | if (skip_prefix(reader->line, "unshallow ", &arg)) { | |
1274 | if (get_oid_hex(arg, &oid)) | |
1275 | die(_("invalid unshallow line: %s"), reader->line); | |
5abddd1e | 1276 | if (!lookup_object(the_repository, oid.hash)) |
f7e20501 BW |
1277 | die(_("object not found: %s"), reader->line); |
1278 | /* make sure that it is parsed as shallow */ | |
109cd76d | 1279 | if (!parse_object(the_repository, &oid)) |
f7e20501 BW |
1280 | die(_("error in object: %s"), reader->line); |
1281 | if (unregister_shallow(&oid)) | |
1282 | die(_("no shallow found: %s"), reader->line); | |
1283 | continue; | |
1284 | } | |
1285 | die(_("expected shallow/unshallow, got %s"), reader->line); | |
1286 | } | |
1287 | ||
1288 | if (reader->status != PACKET_READ_FLUSH && | |
1289 | reader->status != PACKET_READ_DELIM) | |
bbb19a8b | 1290 | die(_("error processing shallow info: %d"), reader->status); |
f7e20501 BW |
1291 | |
1292 | setup_alternate_shallow(&shallow_lock, &alternate_shallow_file, NULL); | |
1293 | args->deepen = 1; | |
1294 | } | |
1295 | ||
e2842b39 JT |
1296 | static void receive_wanted_refs(struct packet_reader *reader, |
1297 | struct ref **sought, int nr_sought) | |
73302051 BW |
1298 | { |
1299 | process_section_header(reader, "wanted-refs", 0); | |
1300 | while (packet_reader_read(reader) == PACKET_READ_NORMAL) { | |
1301 | struct object_id oid; | |
1302 | const char *end; | |
e2842b39 | 1303 | int i; |
73302051 BW |
1304 | |
1305 | if (parse_oid_hex(reader->line, &oid, &end) || *end++ != ' ') | |
bbb19a8b | 1306 | die(_("expected wanted-ref, got '%s'"), reader->line); |
73302051 | 1307 | |
e2842b39 JT |
1308 | for (i = 0; i < nr_sought; i++) { |
1309 | if (!strcmp(end, sought[i]->name)) { | |
1310 | oidcpy(&sought[i]->old_oid, &oid); | |
73302051 BW |
1311 | break; |
1312 | } | |
1313 | } | |
1314 | ||
e2842b39 | 1315 | if (i == nr_sought) |
bbb19a8b | 1316 | die(_("unexpected wanted-ref: '%s'"), reader->line); |
73302051 BW |
1317 | } |
1318 | ||
1319 | if (reader->status != PACKET_READ_DELIM) | |
bbb19a8b | 1320 | die(_("error processing wanted refs: %d"), reader->status); |
73302051 BW |
1321 | } |
1322 | ||
685fbd32 BW |
1323 | enum fetch_state { |
1324 | FETCH_CHECK_LOCAL = 0, | |
1325 | FETCH_SEND_REQUEST, | |
1326 | FETCH_PROCESS_ACKS, | |
1327 | FETCH_GET_PACK, | |
1328 | FETCH_DONE, | |
1329 | }; | |
1330 | ||
1331 | static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args, | |
1332 | int fd[2], | |
1333 | const struct ref *orig_ref, | |
1334 | struct ref **sought, int nr_sought, | |
1335 | char **pack_lockfile) | |
1336 | { | |
1337 | struct ref *ref = copy_ref_list(orig_ref); | |
1338 | enum fetch_state state = FETCH_CHECK_LOCAL; | |
1339 | struct oidset common = OIDSET_INIT; | |
1340 | struct packet_reader reader; | |
1341 | int in_vain = 0; | |
1342 | int haves_to_send = INITIAL_FLUSH; | |
ec062838 | 1343 | struct fetch_negotiator negotiator; |
42cc7485 | 1344 | fetch_negotiator_init(&negotiator, negotiation_algorithm); |
685fbd32 BW |
1345 | packet_reader_init(&reader, fd[0], NULL, 0, |
1346 | PACKET_READ_CHOMP_NEWLINE); | |
1347 | ||
1348 | while (state != FETCH_DONE) { | |
1349 | switch (state) { | |
1350 | case FETCH_CHECK_LOCAL: | |
1351 | sort_ref_list(&ref, ref_compare_name); | |
1352 | QSORT(sought, nr_sought, cmp_ref_by_name); | |
1353 | ||
1354 | /* v2 supports these by default */ | |
1355 | allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1; | |
1356 | use_sideband = 2; | |
f7e20501 BW |
1357 | if (args->depth > 0 || args->deepen_since || args->deepen_not) |
1358 | args->deepen = 1; | |
685fbd32 | 1359 | |
685fbd32 | 1360 | /* Filter 'ref' by 'sought' and those that aren't local */ |
12f19a98 JT |
1361 | if (!args->no_dependents) { |
1362 | mark_complete_and_common_ref(&negotiator, args, &ref); | |
1363 | filter_refs(args, &ref, sought, nr_sought); | |
1364 | if (everything_local(args, &ref)) | |
1365 | state = FETCH_DONE; | |
1366 | else | |
1367 | state = FETCH_SEND_REQUEST; | |
1368 | ||
1369 | mark_tips(&negotiator, args->negotiation_tips); | |
1370 | for_each_cached_alternate(&negotiator, | |
1371 | insert_one_alternate_object); | |
1372 | } else { | |
1373 | filter_refs(args, &ref, sought, nr_sought); | |
685fbd32 | 1374 | state = FETCH_SEND_REQUEST; |
12f19a98 | 1375 | } |
685fbd32 BW |
1376 | break; |
1377 | case FETCH_SEND_REQUEST: | |
ec062838 JT |
1378 | if (send_fetch_request(&negotiator, fd[1], args, ref, |
1379 | &common, | |
685fbd32 BW |
1380 | &haves_to_send, &in_vain)) |
1381 | state = FETCH_GET_PACK; | |
1382 | else | |
1383 | state = FETCH_PROCESS_ACKS; | |
1384 | break; | |
1385 | case FETCH_PROCESS_ACKS: | |
1386 | /* Process ACKs/NAKs */ | |
ec062838 | 1387 | switch (process_acks(&negotiator, &reader, &common)) { |
685fbd32 BW |
1388 | case 2: |
1389 | state = FETCH_GET_PACK; | |
1390 | break; | |
1391 | case 1: | |
1392 | in_vain = 0; | |
1393 | /* fallthrough */ | |
1394 | default: | |
1395 | state = FETCH_SEND_REQUEST; | |
1396 | break; | |
1397 | } | |
1398 | break; | |
1399 | case FETCH_GET_PACK: | |
f7e20501 BW |
1400 | /* Check for shallow-info section */ |
1401 | if (process_section_header(&reader, "shallow-info", 1)) | |
1402 | receive_shallow_info(args, &reader); | |
1403 | ||
73302051 | 1404 | if (process_section_header(&reader, "wanted-refs", 1)) |
e2842b39 | 1405 | receive_wanted_refs(&reader, sought, nr_sought); |
73302051 | 1406 | |
685fbd32 BW |
1407 | /* get the pack */ |
1408 | process_section_header(&reader, "packfile", 0); | |
1409 | if (get_pack(args, fd, pack_lockfile)) | |
1410 | die(_("git fetch-pack: fetch failed.")); | |
1411 | ||
1412 | state = FETCH_DONE; | |
1413 | break; | |
1414 | case FETCH_DONE: | |
1415 | continue; | |
1416 | } | |
1417 | } | |
1418 | ||
ec062838 | 1419 | negotiator.release(&negotiator); |
685fbd32 BW |
1420 | oidset_clear(&common); |
1421 | return ref; | |
1422 | } | |
1423 | ||
1362df0d ÆAB |
1424 | static int fetch_pack_config_cb(const char *var, const char *value, void *cb) |
1425 | { | |
1426 | if (strcmp(var, "fetch.fsck.skiplist") == 0) { | |
1427 | const char *path; | |
1428 | ||
1429 | if (git_config_pathname(&path, var, value)) | |
1430 | return 1; | |
1431 | strbuf_addf(&fsck_msg_types, "%cskiplist=%s", | |
1432 | fsck_msg_types.len ? ',' : '=', path); | |
1433 | free((char *)path); | |
1434 | return 0; | |
1435 | } | |
1436 | ||
1437 | if (skip_prefix(var, "fetch.fsck.", &var)) { | |
1438 | if (is_valid_msg_type(var, value)) | |
1439 | strbuf_addf(&fsck_msg_types, "%c%s=%s", | |
1440 | fsck_msg_types.len ? ',' : '=', var, value); | |
1441 | else | |
1442 | warning("Skipping unknown msg id '%s'", var); | |
1443 | return 0; | |
1444 | } | |
1445 | ||
1446 | return git_default_config(var, value, cb); | |
1447 | } | |
1448 | ||
f44af51d | 1449 | static void fetch_pack_config(void) |
745f7a8c | 1450 | { |
f44af51d TA |
1451 | git_config_get_int("fetch.unpacklimit", &fetch_unpack_limit); |
1452 | git_config_get_int("transfer.unpacklimit", &transfer_unpack_limit); | |
1453 | git_config_get_bool("repack.usedeltabaseoffset", &prefer_ofs_delta); | |
1454 | git_config_get_bool("fetch.fsckobjects", &fetch_fsck_objects); | |
1455 | git_config_get_bool("transfer.fsckobjects", &transfer_fsck_objects); | |
42cc7485 JT |
1456 | git_config_get_string("fetch.negotiationalgorithm", |
1457 | &negotiation_algorithm); | |
745f7a8c | 1458 | |
1362df0d | 1459 | git_config(fetch_pack_config_cb, NULL); |
745f7a8c NTND |
1460 | } |
1461 | ||
745f7a8c NTND |
1462 | static void fetch_pack_setup(void) |
1463 | { | |
1464 | static int did_setup; | |
1465 | if (did_setup) | |
1466 | return; | |
f44af51d | 1467 | fetch_pack_config(); |
745f7a8c NTND |
1468 | if (0 <= transfer_unpack_limit) |
1469 | unpack_limit = transfer_unpack_limit; | |
1470 | else if (0 <= fetch_unpack_limit) | |
1471 | unpack_limit = fetch_unpack_limit; | |
1472 | did_setup = 1; | |
1473 | } | |
1474 | ||
f2db854d JH |
1475 | static int remove_duplicates_in_refs(struct ref **ref, int nr) |
1476 | { | |
1477 | struct string_list names = STRING_LIST_INIT_NODUP; | |
1478 | int src, dst; | |
1479 | ||
1480 | for (src = dst = 0; src < nr; src++) { | |
1481 | struct string_list_item *item; | |
1482 | item = string_list_insert(&names, ref[src]->name); | |
1483 | if (item->util) | |
1484 | continue; /* already have it */ | |
1485 | item->util = ref[src]; | |
1486 | if (src != dst) | |
1487 | ref[dst] = ref[src]; | |
1488 | dst++; | |
1489 | } | |
1490 | for (src = dst; src < nr; src++) | |
1491 | ref[src] = NULL; | |
1492 | string_list_clear(&names, 0); | |
1493 | return dst; | |
1494 | } | |
1495 | ||
beea4152 | 1496 | static void update_shallow(struct fetch_pack_args *args, |
e2842b39 | 1497 | struct ref **sought, int nr_sought, |
beea4152 | 1498 | struct shallow_info *si) |
a796ccee | 1499 | { |
910650d2 | 1500 | struct oid_array ref = OID_ARRAY_INIT; |
4820a33b | 1501 | int *status; |
beea4152 NTND |
1502 | int i; |
1503 | ||
79891cb9 | 1504 | if (args->deepen && alternate_shallow_file) { |
a796ccee | 1505 | if (*alternate_shallow_file == '\0') { /* --unshallow */ |
102de880 | 1506 | unlink_or_warn(git_path_shallow(the_repository)); |
a796ccee NTND |
1507 | rollback_lock_file(&shallow_lock); |
1508 | } else | |
1509 | commit_lock_file(&shallow_lock); | |
1510 | return; | |
1511 | } | |
beea4152 NTND |
1512 | |
1513 | if (!si->shallow || !si->shallow->nr) | |
1514 | return; | |
1515 | ||
beea4152 NTND |
1516 | if (args->cloning) { |
1517 | /* | |
1518 | * remote is shallow, but this is a clone, there are | |
1519 | * no objects in repo to worry about. Accept any | |
1520 | * shallow points that exist in the pack (iow in repo | |
1521 | * after get_pack() and reprepare_packed_git()) | |
1522 | */ | |
910650d2 | 1523 | struct oid_array extra = OID_ARRAY_INIT; |
ee3051bd | 1524 | struct object_id *oid = si->shallow->oid; |
beea4152 | 1525 | for (i = 0; i < si->shallow->nr; i++) |
ee3051bd | 1526 | if (has_object_file(&oid[i])) |
910650d2 | 1527 | oid_array_append(&extra, &oid[i]); |
beea4152 NTND |
1528 | if (extra.nr) { |
1529 | setup_alternate_shallow(&shallow_lock, | |
1530 | &alternate_shallow_file, | |
1531 | &extra); | |
1532 | commit_lock_file(&shallow_lock); | |
1533 | } | |
910650d2 | 1534 | oid_array_clear(&extra); |
beea4152 NTND |
1535 | return; |
1536 | } | |
4820a33b NTND |
1537 | |
1538 | if (!si->nr_ours && !si->nr_theirs) | |
1539 | return; | |
1540 | ||
1541 | remove_nonexistent_theirs_shallow(si); | |
4820a33b NTND |
1542 | if (!si->nr_ours && !si->nr_theirs) |
1543 | return; | |
e2842b39 JT |
1544 | for (i = 0; i < nr_sought; i++) |
1545 | oid_array_append(&ref, &sought[i]->old_oid); | |
4820a33b NTND |
1546 | si->ref = &ref; |
1547 | ||
48d25cae NTND |
1548 | if (args->update_shallow) { |
1549 | /* | |
1550 | * remote is also shallow, .git/shallow may be updated | |
1551 | * so all refs can be accepted. Make sure we only add | |
1552 | * shallow roots that are actually reachable from new | |
1553 | * refs. | |
1554 | */ | |
910650d2 | 1555 | struct oid_array extra = OID_ARRAY_INIT; |
ee3051bd | 1556 | struct object_id *oid = si->shallow->oid; |
48d25cae NTND |
1557 | assign_shallow_commits_to_refs(si, NULL, NULL); |
1558 | if (!si->nr_ours && !si->nr_theirs) { | |
910650d2 | 1559 | oid_array_clear(&ref); |
48d25cae NTND |
1560 | return; |
1561 | } | |
1562 | for (i = 0; i < si->nr_ours; i++) | |
910650d2 | 1563 | oid_array_append(&extra, &oid[si->ours[i]]); |
48d25cae | 1564 | for (i = 0; i < si->nr_theirs; i++) |
910650d2 | 1565 | oid_array_append(&extra, &oid[si->theirs[i]]); |
48d25cae NTND |
1566 | setup_alternate_shallow(&shallow_lock, |
1567 | &alternate_shallow_file, | |
1568 | &extra); | |
1569 | commit_lock_file(&shallow_lock); | |
910650d2 | 1570 | oid_array_clear(&extra); |
1571 | oid_array_clear(&ref); | |
48d25cae NTND |
1572 | return; |
1573 | } | |
1574 | ||
4820a33b NTND |
1575 | /* |
1576 | * remote is also shallow, check what ref is safe to update | |
1577 | * without updating .git/shallow | |
1578 | */ | |
e2842b39 | 1579 | status = xcalloc(nr_sought, sizeof(*status)); |
4820a33b NTND |
1580 | assign_shallow_commits_to_refs(si, NULL, status); |
1581 | if (si->nr_ours || si->nr_theirs) { | |
e2842b39 | 1582 | for (i = 0; i < nr_sought; i++) |
4820a33b | 1583 | if (status[i]) |
e2842b39 | 1584 | sought[i]->status = REF_STATUS_REJECT_SHALLOW; |
4820a33b NTND |
1585 | } |
1586 | free(status); | |
910650d2 | 1587 | oid_array_clear(&ref); |
a796ccee NTND |
1588 | } |
1589 | ||
cf1e7c07 JT |
1590 | static int iterate_ref_map(void *cb_data, struct object_id *oid) |
1591 | { | |
1592 | struct ref **rm = cb_data; | |
1593 | struct ref *ref = *rm; | |
1594 | ||
1595 | if (!ref) | |
1596 | return -1; /* end of the list */ | |
1597 | *rm = ref->next; | |
1598 | oidcpy(oid, &ref->old_oid); | |
1599 | return 0; | |
1600 | } | |
1601 | ||
745f7a8c NTND |
1602 | struct ref *fetch_pack(struct fetch_pack_args *args, |
1603 | int fd[], struct child_process *conn, | |
1604 | const struct ref *ref, | |
1605 | const char *dest, | |
f2db854d | 1606 | struct ref **sought, int nr_sought, |
910650d2 | 1607 | struct oid_array *shallow, |
685fbd32 BW |
1608 | char **pack_lockfile, |
1609 | enum protocol_version version) | |
745f7a8c | 1610 | { |
745f7a8c | 1611 | struct ref *ref_cpy; |
beea4152 | 1612 | struct shallow_info si; |
745f7a8c NTND |
1613 | |
1614 | fetch_pack_setup(); | |
f2db854d JH |
1615 | if (nr_sought) |
1616 | nr_sought = remove_duplicates_in_refs(sought, nr_sought); | |
745f7a8c | 1617 | |
4c7f9567 JT |
1618 | if (args->no_dependents && !args->filter_options.choice) { |
1619 | /* | |
1620 | * The protocol does not support requesting that only the | |
1621 | * wanted objects be sent, so approximate this by setting a | |
1622 | * "blob:none" filter if no filter is already set. This works | |
1623 | * for all object types: note that wanted blobs will still be | |
1624 | * sent because they are directly specified as a "want". | |
1625 | * | |
1626 | * NEEDSWORK: Add an option in the protocol to request that | |
1627 | * only the wanted objects be sent, and implement it. | |
1628 | */ | |
1629 | parse_list_objects_filter(&args->filter_options, "blob:none"); | |
1630 | } | |
1631 | ||
745f7a8c NTND |
1632 | if (!ref) { |
1633 | packet_flush(fd[1]); | |
1dd73e20 | 1634 | die(_("no matching remote head")); |
745f7a8c | 1635 | } |
beea4152 | 1636 | prepare_shallow_info(&si, shallow); |
685fbd32 BW |
1637 | if (version == protocol_v2) |
1638 | ref_cpy = do_fetch_pack_v2(args, fd, ref, sought, nr_sought, | |
1639 | pack_lockfile); | |
1640 | else | |
1641 | ref_cpy = do_fetch_pack(args, fd, ref, sought, nr_sought, | |
1642 | &si, pack_lockfile); | |
a49d2834 | 1643 | reprepare_packed_git(the_repository); |
cf1e7c07 JT |
1644 | |
1645 | if (!args->cloning && args->deepen) { | |
1646 | struct check_connected_options opt = CHECK_CONNECTED_INIT; | |
1647 | struct ref *iterator = ref_cpy; | |
1648 | opt.shallow_file = alternate_shallow_file; | |
1649 | if (args->deepen) | |
1650 | opt.is_deepening_fetch = 1; | |
1651 | if (check_connected(iterate_ref_map, &iterator, &opt)) { | |
1652 | error(_("remote did not send all necessary objects")); | |
1653 | free_refs(ref_cpy); | |
1654 | ref_cpy = NULL; | |
1655 | rollback_lock_file(&shallow_lock); | |
1656 | goto cleanup; | |
1657 | } | |
1658 | args->connectivity_checked = 1; | |
1659 | } | |
1660 | ||
e2842b39 | 1661 | update_shallow(args, sought, nr_sought, &si); |
cf1e7c07 | 1662 | cleanup: |
beea4152 | 1663 | clear_shallow_info(&si); |
745f7a8c NTND |
1664 | return ref_cpy; |
1665 | } | |
e860d96b MM |
1666 | |
1667 | int report_unmatched_refs(struct ref **sought, int nr_sought) | |
1668 | { | |
1669 | int i, ret = 0; | |
1670 | ||
1671 | for (i = 0; i < nr_sought; i++) { | |
d56583de | 1672 | if (!sought[i]) |
e860d96b | 1673 | continue; |
d56583de MM |
1674 | switch (sought[i]->match_status) { |
1675 | case REF_MATCHED: | |
1676 | continue; | |
1677 | case REF_NOT_MATCHED: | |
1678 | error(_("no such remote ref %s"), sought[i]->name); | |
1679 | break; | |
1680 | case REF_UNADVERTISED_NOT_ALLOWED: | |
1681 | error(_("Server does not allow request for unadvertised object %s"), | |
1682 | sought[i]->name); | |
1683 | break; | |
1684 | } | |
e860d96b MM |
1685 | ret = 1; |
1686 | } | |
1687 | return ret; | |
1688 | } |