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Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +07001#include "builtin.h"
Brandon Williamsb2141fc2017-06-14 11:07:36 -07002#include "config.h"
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +07003#include "commit.h"
4#include "refs.h"
Stefan Bellercbd53a22018-05-15 16:42:15 -07005#include "object-store.h"
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +07006#include "pkt-line.h"
7#include "sideband.h"
8#include "run-command.h"
9#include "remote.h"
Junio C Hamano47a59182013-07-08 13:56:53 -070010#include "connect.h"
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070011#include "send-pack.h"
12#include "quote.h"
13#include "transport.h"
14#include "version.h"
Nguyễn Thái Ngọc Duy13eb4622013-12-05 20:02:29 +070015#include "sha1-array.h"
Junio C Hamanoa85b3772014-09-12 11:17:07 -070016#include "gpg-interface.h"
Dave Borowitz30261092015-08-19 11:26:46 -040017#include "cache.h"
18
19int option_parse_push_signed(const struct option *opt,
20 const char *arg, int unset)
21{
22 if (unset) {
23 *(int *)(opt->value) = SEND_PACK_PUSH_CERT_NEVER;
24 return 0;
25 }
26 switch (git_parse_maybe_bool(arg)) {
27 case 1:
28 *(int *)(opt->value) = SEND_PACK_PUSH_CERT_ALWAYS;
29 return 0;
30 case 0:
31 *(int *)(opt->value) = SEND_PACK_PUSH_CERT_NEVER;
32 return 0;
33 }
34 if (!strcasecmp("if-asked", arg)) {
35 *(int *)(opt->value) = SEND_PACK_PUSH_CERT_IF_ASKED;
36 return 0;
37 }
38 die("bad %s argument: %s", opt->long_name, arg);
39}
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070040
brian m. carlson246d7402018-03-12 02:27:32 +000041static void feed_object(const struct object_id *oid, FILE *fh, int negative)
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070042{
Jonathan Tand8bc1a52019-10-08 11:37:39 -070043 if (negative &&
Jeff King5cf7a172019-11-27 07:32:11 -050044 !has_object_file_with_flags(oid,
45 OBJECT_INFO_SKIP_FETCH_OBJECT |
46 OBJECT_INFO_QUICK))
Jeff Kingf0bca722016-06-08 15:42:16 -040047 return;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070048
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070049 if (negative)
Jeff Kingf0bca722016-06-08 15:42:16 -040050 putc('^', fh);
brian m. carlson246d7402018-03-12 02:27:32 +000051 fputs(oid_to_hex(oid), fh);
Jeff Kingf0bca722016-06-08 15:42:16 -040052 putc('\n', fh);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070053}
54
55/*
56 * Make a pack stream and spit it out into file descriptor fd
57 */
brian m. carlson910650d2017-03-31 01:40:00 +000058static int pack_objects(int fd, struct ref *refs, struct oid_array *extra, struct send_pack_args *args)
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070059{
60 /*
61 * The child becomes pack-objects --revs; we feed
62 * the revision parameters to it via its stdin and
63 * let its stdout go back to the other end.
64 */
René Scharfed3180272014-08-19 21:09:35 +020065 struct child_process po = CHILD_PROCESS_INIT;
Jeff Kingf0bca722016-06-08 15:42:16 -040066 FILE *po_in;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070067 int i;
Jeff Kingd1a13d32017-03-07 08:39:48 -050068 int rc;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070069
René Scharfea923e052017-12-22 09:14:10 +010070 argv_array_push(&po.args, "pack-objects");
71 argv_array_push(&po.args, "--all-progress-implied");
72 argv_array_push(&po.args, "--revs");
73 argv_array_push(&po.args, "--stdout");
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070074 if (args->use_thin_pack)
René Scharfea923e052017-12-22 09:14:10 +010075 argv_array_push(&po.args, "--thin");
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070076 if (args->use_ofs_delta)
René Scharfea923e052017-12-22 09:14:10 +010077 argv_array_push(&po.args, "--delta-base-offset");
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070078 if (args->quiet || !args->progress)
René Scharfea923e052017-12-22 09:14:10 +010079 argv_array_push(&po.args, "-q");
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070080 if (args->progress)
René Scharfea923e052017-12-22 09:14:10 +010081 argv_array_push(&po.args, "--progress");
Stefan Bellerc8813482018-05-17 15:51:46 -070082 if (is_repository_shallow(the_repository))
René Scharfea923e052017-12-22 09:14:10 +010083 argv_array_push(&po.args, "--shallow");
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070084 po.in = -1;
85 po.out = args->stateless_rpc ? -1 : fd;
86 po.git_cmd = 1;
87 if (start_command(&po))
88 die_errno("git pack-objects failed");
89
90 /*
91 * We feed the pack-objects we just spawned with revision
92 * parameters by writing to the pipe.
93 */
Jeff Kingf0bca722016-06-08 15:42:16 -040094 po_in = xfdopen(po.in, "w");
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070095 for (i = 0; i < extra->nr; i++)
brian m. carlson246d7402018-03-12 02:27:32 +000096 feed_object(&extra->oid[i], po_in, 1);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +070097
98 while (refs) {
Jeff Kingf0bca722016-06-08 15:42:16 -040099 if (!is_null_oid(&refs->old_oid))
brian m. carlson246d7402018-03-12 02:27:32 +0000100 feed_object(&refs->old_oid, po_in, 1);
Jeff Kingf0bca722016-06-08 15:42:16 -0400101 if (!is_null_oid(&refs->new_oid))
brian m. carlson246d7402018-03-12 02:27:32 +0000102 feed_object(&refs->new_oid, po_in, 0);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700103 refs = refs->next;
104 }
105
Jeff Kingf0bca722016-06-08 15:42:16 -0400106 fflush(po_in);
107 if (ferror(po_in))
108 die_errno("error writing to pack-objects");
109 fclose(po_in);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700110
111 if (args->stateless_rpc) {
112 char *buf = xmalloc(LARGE_PACKET_MAX);
113 while (1) {
114 ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX);
115 if (n <= 0)
116 break;
117 send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX);
118 }
119 free(buf);
120 close(po.out);
121 po.out = -1;
122 }
123
Jeff Kingd1a13d32017-03-07 08:39:48 -0500124 rc = finish_command(&po);
125 if (rc) {
126 /*
127 * For a normal non-zero exit, we assume pack-objects wrote
128 * something useful to stderr. For death by signal, though,
129 * we should mention it to the user. The exception is SIGPIPE
Ville Skyttä64127572017-06-25 13:20:41 +0300130 * (141), because that's a normal occurrence if the remote end
Jeff Kingd1a13d32017-03-07 08:39:48 -0500131 * hangs up (and we'll report that by trying to read the unpack
132 * status).
133 */
134 if (rc > 128 && rc != 141)
135 error("pack-objects died of signal %d", rc - 128);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700136 return -1;
Jeff Kingd1a13d32017-03-07 08:39:48 -0500137 }
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700138 return 0;
139}
140
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800141static int receive_unpack_status(struct packet_reader *reader)
Jeff King7c39df22017-03-07 08:35:57 -0500142{
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800143 if (packet_reader_read(reader) != PACKET_READ_NORMAL)
Jon Simonsbb1356d2018-02-08 13:47:50 -0500144 return error(_("unexpected flush packet while reading remote unpack status"));
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800145 if (!skip_prefix(reader->line, "unpack ", &reader->line))
146 return error(_("unable to parse remote unpack status: %s"), reader->line);
147 if (strcmp(reader->line, "ok"))
148 return error(_("remote unpack failed: %s"), reader->line);
Jeff King7c39df22017-03-07 08:35:57 -0500149 return 0;
150}
151
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800152static int receive_status(struct packet_reader *reader, struct ref *refs)
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700153{
154 struct ref *hint;
Jeff King7c39df22017-03-07 08:35:57 -0500155 int ret;
156
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700157 hint = NULL;
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800158 ret = receive_unpack_status(reader);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700159 while (1) {
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800160 const char *refname;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700161 char *msg;
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800162 if (packet_reader_read(reader) != PACKET_READ_NORMAL)
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700163 break;
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800164 if (!starts_with(reader->line, "ok ") && !starts_with(reader->line, "ng ")) {
165 error("invalid ref status from remote: %s", reader->line);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700166 ret = -1;
167 break;
168 }
169
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800170 refname = reader->line + 3;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700171 msg = strchr(refname, ' ');
172 if (msg)
173 *msg++ = '\0';
174
175 /* first try searching at our hint, falling back to all refs */
176 if (hint)
177 hint = find_ref_by_name(hint, refname);
178 if (!hint)
179 hint = find_ref_by_name(refs, refname);
180 if (!hint) {
181 warning("remote reported status on unknown ref: %s",
182 refname);
183 continue;
184 }
185 if (hint->status != REF_STATUS_EXPECTING_REPORT) {
186 warning("remote reported status on unexpected ref: %s",
187 refname);
188 continue;
189 }
190
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800191 if (reader->line[0] == 'o' && reader->line[1] == 'k')
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700192 hint->status = REF_STATUS_OK;
193 else {
194 hint->status = REF_STATUS_REMOTE_REJECT;
195 ret = -1;
196 }
Junio C Hamano13092a92016-10-12 11:20:23 -0700197 hint->remote_status = xstrdup_or_null(msg);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700198 /* start our next search from the next ref */
199 hint = hint->next;
200 }
201 return ret;
202}
203
204static int sideband_demux(int in, int out, void *data)
205{
206 int *fd = data, ret;
Nguyễn Thái Ngọc Duyc0e40a22018-11-03 09:48:39 +0100207 if (async_with_fork())
208 close(fd[1]);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700209 ret = recv_sideband("send-pack", fd[0], out);
210 close(out);
211 return ret;
212}
213
Nguyễn Thái Ngọc Duyf2c681c2013-12-05 20:02:52 +0700214static int advertise_shallow_grafts_cb(const struct commit_graft *graft, void *cb)
215{
216 struct strbuf *sb = cb;
217 if (graft->nr_parent == -1)
brian m. carlson7683e2e2015-03-13 23:39:34 +0000218 packet_buf_write(sb, "shallow %s\n", oid_to_hex(&graft->oid));
Nguyễn Thái Ngọc Duyf2c681c2013-12-05 20:02:52 +0700219 return 0;
220}
221
Ramsay Jones16a27432014-01-05 23:55:01 +0000222static void advertise_shallow_grafts_buf(struct strbuf *sb)
Nguyễn Thái Ngọc Duyf2c681c2013-12-05 20:02:52 +0700223{
Stefan Bellerc8813482018-05-17 15:51:46 -0700224 if (!is_repository_shallow(the_repository))
Nguyễn Thái Ngọc Duyf2c681c2013-12-05 20:02:52 +0700225 return;
226 for_each_commit_graft(advertise_shallow_grafts_cb, sb);
227}
228
Stefan Beller7582e932015-01-07 19:23:21 -0800229#define CHECK_REF_NO_PUSH -1
230#define CHECK_REF_STATUS_REJECTED -2
231#define CHECK_REF_UPTODATE -3
232static int check_to_send_update(const struct ref *ref, const struct send_pack_args *args)
Junio C Hamanoe40671a2014-08-12 15:40:00 -0700233{
234 if (!ref->peer_ref && !args->send_mirror)
Stefan Beller7582e932015-01-07 19:23:21 -0800235 return CHECK_REF_NO_PUSH;
Junio C Hamanoe40671a2014-08-12 15:40:00 -0700236
237 /* Check for statuses set by set_ref_status_for_push() */
238 switch (ref->status) {
239 case REF_STATUS_REJECT_NONFASTFORWARD:
240 case REF_STATUS_REJECT_ALREADY_EXISTS:
241 case REF_STATUS_REJECT_FETCH_FIRST:
242 case REF_STATUS_REJECT_NEEDS_FORCE:
243 case REF_STATUS_REJECT_STALE:
244 case REF_STATUS_REJECT_NODELETE:
Stefan Beller7582e932015-01-07 19:23:21 -0800245 return CHECK_REF_STATUS_REJECTED;
Junio C Hamanoe40671a2014-08-12 15:40:00 -0700246 case REF_STATUS_UPTODATE:
Stefan Beller7582e932015-01-07 19:23:21 -0800247 return CHECK_REF_UPTODATE;
Junio C Hamanoe40671a2014-08-12 15:40:00 -0700248 default:
Stefan Beller7582e932015-01-07 19:23:21 -0800249 return 0;
Junio C Hamanoe40671a2014-08-12 15:40:00 -0700250 }
251}
252
Junio C Hamanoa85b3772014-09-12 11:17:07 -0700253/*
254 * the beginning of the next line, or the end of buffer.
255 *
256 * NEEDSWORK: perhaps move this to git-compat-util.h or somewhere and
257 * convert many similar uses found by "git grep -A4 memchr".
258 */
259static const char *next_line(const char *line, size_t len)
260{
261 const char *nl = memchr(line, '\n', len);
262 if (!nl)
263 return line + len; /* incomplete line */
264 return nl + 1;
265}
266
Junio C Hamano20a75582014-08-18 13:46:58 -0700267static int generate_push_cert(struct strbuf *req_buf,
268 const struct ref *remote_refs,
269 struct send_pack_args *args,
Junio C Hamanob89363e2014-08-21 16:45:30 -0700270 const char *cap_string,
271 const char *push_cert_nonce)
Junio C Hamanoa85b3772014-09-12 11:17:07 -0700272{
273 const struct ref *ref;
Stefan Bellerf6a4e612016-07-14 14:49:47 -0700274 struct string_list_item *item;
Junio C Hamanoa85b3772014-09-12 11:17:07 -0700275 char *signing_key = xstrdup(get_signing_key());
276 const char *cp, *np;
277 struct strbuf cert = STRBUF_INIT;
278 int update_seen = 0;
279
René Scharfe02962d32016-07-30 19:36:23 +0200280 strbuf_addstr(&cert, "certificate version 0.1\n");
Junio C Hamanofb06b522014-10-08 13:05:15 -0700281 strbuf_addf(&cert, "pusher %s ", signing_key);
282 datestamp(&cert);
283 strbuf_addch(&cert, '\n');
Junio C Hamano9be89162014-08-22 18:15:24 -0700284 if (args->url && *args->url) {
285 char *anon_url = transport_anonymize_url(args->url);
286 strbuf_addf(&cert, "pushee %s\n", anon_url);
287 free(anon_url);
288 }
Junio C Hamanob89363e2014-08-21 16:45:30 -0700289 if (push_cert_nonce[0])
290 strbuf_addf(&cert, "nonce %s\n", push_cert_nonce);
Stefan Bellerf6a4e612016-07-14 14:49:47 -0700291 if (args->push_options)
292 for_each_string_list_item(item, args->push_options)
293 strbuf_addf(&cert, "push-option %s\n", item->string);
Junio C Hamanoa85b3772014-09-12 11:17:07 -0700294 strbuf_addstr(&cert, "\n");
295
296 for (ref = remote_refs; ref; ref = ref->next) {
Stefan Beller7582e932015-01-07 19:23:21 -0800297 if (check_to_send_update(ref, args) < 0)
Junio C Hamanoa85b3772014-09-12 11:17:07 -0700298 continue;
299 update_seen = 1;
300 strbuf_addf(&cert, "%s %s %s\n",
brian m. carlsonf4e54d02015-11-10 02:22:20 +0000301 oid_to_hex(&ref->old_oid),
302 oid_to_hex(&ref->new_oid),
Junio C Hamanoa85b3772014-09-12 11:17:07 -0700303 ref->name);
304 }
305 if (!update_seen)
306 goto free_return;
307
308 if (sign_buffer(&cert, &cert, signing_key))
309 die(_("failed to sign the push certificate"));
310
Junio C Hamano20a75582014-08-18 13:46:58 -0700311 packet_buf_write(req_buf, "push-cert%c%s", 0, cap_string);
Junio C Hamanoa85b3772014-09-12 11:17:07 -0700312 for (cp = cert.buf; cp < cert.buf + cert.len; cp = np) {
313 np = next_line(cp, cert.buf + cert.len - cp);
314 packet_buf_write(req_buf,
315 "%.*s", (int)(np - cp), cp);
316 }
317 packet_buf_write(req_buf, "push-cert-end\n");
318
319free_return:
320 free(signing_key);
321 strbuf_release(&cert);
Junio C Hamano20a75582014-08-18 13:46:58 -0700322 return update_seen;
Junio C Hamanoa85b3772014-09-12 11:17:07 -0700323}
324
Ronnie Sahlberg4ff17f12015-01-07 19:23:22 -0800325
326static int atomic_push_failure(struct send_pack_args *args,
327 struct ref *remote_refs,
328 struct ref *failing_ref)
329{
330 struct ref *ref;
331 /* Mark other refs as failed */
332 for (ref = remote_refs; ref; ref = ref->next) {
333 if (!ref->peer_ref && !args->send_mirror)
334 continue;
335
336 switch (ref->status) {
337 case REF_STATUS_EXPECTING_REPORT:
338 ref->status = REF_STATUS_ATOMIC_PUSH_FAILED;
339 continue;
340 default:
341 break; /* do nothing */
342 }
343 }
344 return error("atomic push failed for ref %s. status: %d\n",
345 failing_ref->name, failing_ref->status);
346}
347
Junio C Hamanoafcb6ee2015-04-01 18:00:36 -0700348#define NONCE_LEN_LIMIT 256
349
350static void reject_invalid_nonce(const char *nonce, int len)
351{
352 int i = 0;
353
354 if (NONCE_LEN_LIMIT <= len)
355 die("the receiving end asked to sign an invalid nonce <%.*s>",
356 len, nonce);
357
358 for (i = 0; i < len; i++) {
359 int ch = nonce[i] & 0xFF;
360 if (isalnum(ch) ||
361 ch == '-' || ch == '.' ||
362 ch == '/' || ch == '+' ||
363 ch == '=' || ch == '_')
364 continue;
365 die("the receiving end asked to sign an invalid nonce <%.*s>",
366 len, nonce);
367 }
368}
369
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700370int send_pack(struct send_pack_args *args,
371 int fd[], struct child_process *conn,
372 struct ref *remote_refs,
brian m. carlson910650d2017-03-31 01:40:00 +0000373 struct oid_array *extra_have)
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700374{
375 int in = fd[0];
376 int out = fd[1];
377 struct strbuf req_buf = STRBUF_INIT;
Junio C Hamano887f3532014-08-15 11:37:01 -0700378 struct strbuf cap_buf = STRBUF_INIT;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700379 struct ref *ref;
Junio C Hamanoab2b0c92014-08-15 12:23:51 -0700380 int need_pack_data = 0;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700381 int allow_deleting_refs = 0;
382 int status_report = 0;
383 int use_sideband = 0;
384 int quiet_supported = 0;
385 int agent_supported = 0;
Ronnie Sahlberg4ff17f12015-01-07 19:23:22 -0800386 int use_atomic = 0;
387 int atomic_supported = 0;
Stefan Bellerf6a4e612016-07-14 14:49:47 -0700388 int use_push_options = 0;
389 int push_options_supported = 0;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700390 unsigned cmds_sent = 0;
391 int ret;
392 struct async demux;
Junio C Hamanob89363e2014-08-21 16:45:30 -0700393 const char *push_cert_nonce = NULL;
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800394 struct packet_reader reader;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700395
396 /* Does the other end support the reporting? */
397 if (server_supports("report-status"))
398 status_report = 1;
399 if (server_supports("delete-refs"))
400 allow_deleting_refs = 1;
401 if (server_supports("ofs-delta"))
402 args->use_ofs_delta = 1;
403 if (server_supports("side-band-64k"))
404 use_sideband = 1;
405 if (server_supports("quiet"))
406 quiet_supported = 1;
407 if (server_supports("agent"))
408 agent_supported = 1;
Carlos Martín Nieto1ba98a72013-11-23 17:07:55 +0100409 if (server_supports("no-thin"))
410 args->use_thin_pack = 0;
Ronnie Sahlberg4ff17f12015-01-07 19:23:22 -0800411 if (server_supports("atomic"))
412 atomic_supported = 1;
Stefan Bellerf6a4e612016-07-14 14:49:47 -0700413 if (server_supports("push-options"))
414 push_options_supported = 1;
Junio C Hamanob89363e2014-08-21 16:45:30 -0700415
Dave Borowitz30261092015-08-19 11:26:46 -0400416 if (args->push_cert != SEND_PACK_PUSH_CERT_NEVER) {
417 int len;
Junio C Hamanob89363e2014-08-21 16:45:30 -0700418 push_cert_nonce = server_feature_value("push-cert", &len);
Dave Borowitz30261092015-08-19 11:26:46 -0400419 if (push_cert_nonce) {
420 reject_invalid_nonce(push_cert_nonce, len);
421 push_cert_nonce = xmemdupz(push_cert_nonce, len);
422 } else if (args->push_cert == SEND_PACK_PUSH_CERT_ALWAYS) {
Junio C Hamanob89363e2014-08-21 16:45:30 -0700423 die(_("the receiving end does not support --signed push"));
Dave Borowitz30261092015-08-19 11:26:46 -0400424 } else if (args->push_cert == SEND_PACK_PUSH_CERT_IF_ASKED) {
425 warning(_("not sending a push certificate since the"
426 " receiving end does not support --signed"
427 " push"));
428 }
Junio C Hamanob89363e2014-08-21 16:45:30 -0700429 }
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700430
431 if (!remote_refs) {
432 fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
433 "Perhaps you should specify a branch such as 'master'.\n");
434 return 0;
435 }
Ronnie Sahlberg4ff17f12015-01-07 19:23:22 -0800436 if (args->atomic && !atomic_supported)
Ralf Thielowc8b8f222015-04-02 19:28:48 +0200437 die(_("the receiving end does not support --atomic push"));
Ronnie Sahlberg4ff17f12015-01-07 19:23:22 -0800438
439 use_atomic = atomic_supported && args->atomic;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700440
Stefan Bellerf6a4e612016-07-14 14:49:47 -0700441 if (args->push_options && !push_options_supported)
442 die(_("the receiving end does not support push options"));
443
444 use_push_options = push_options_supported && args->push_options;
445
Junio C Hamano887f3532014-08-15 11:37:01 -0700446 if (status_report)
447 strbuf_addstr(&cap_buf, " report-status");
448 if (use_sideband)
449 strbuf_addstr(&cap_buf, " side-band-64k");
450 if (quiet_supported && (args->quiet || !args->progress))
451 strbuf_addstr(&cap_buf, " quiet");
Ronnie Sahlberg4ff17f12015-01-07 19:23:22 -0800452 if (use_atomic)
453 strbuf_addstr(&cap_buf, " atomic");
Stefan Bellerf6a4e612016-07-14 14:49:47 -0700454 if (use_push_options)
455 strbuf_addstr(&cap_buf, " push-options");
Junio C Hamano887f3532014-08-15 11:37:01 -0700456 if (agent_supported)
457 strbuf_addf(&cap_buf, " agent=%s", git_user_agent_sanitized());
458
Junio C Hamano621b0592014-08-12 15:04:17 -0700459 /*
460 * NEEDSWORK: why does delete-refs have to be so specific to
461 * send-pack machinery that set_ref_status_for_push() cannot
462 * set this bit for us???
463 */
464 for (ref = remote_refs; ref; ref = ref->next)
465 if (ref->deletion && !allow_deleting_refs)
466 ref->status = REF_STATUS_REJECT_NODELETE;
467
Nguyễn Thái Ngọc Duy5dbd7672013-12-05 20:02:44 +0700468 if (!args->dry_run)
Nguyễn Thái Ngọc Duyf2c681c2013-12-05 20:02:52 +0700469 advertise_shallow_grafts_buf(&req_buf);
Nguyễn Thái Ngọc Duy5dbd7672013-12-05 20:02:44 +0700470
Dave Borowitz30261092015-08-19 11:26:46 -0400471 if (!args->dry_run && push_cert_nonce)
Junio C Hamano20a75582014-08-18 13:46:58 -0700472 cmds_sent = generate_push_cert(&req_buf, remote_refs, args,
Junio C Hamanob89363e2014-08-21 16:45:30 -0700473 cap_buf.buf, push_cert_nonce);
Junio C Hamanoa85b3772014-09-12 11:17:07 -0700474
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700475 /*
Junio C Hamanob783aa72014-08-15 12:29:42 -0700476 * Clear the status for each ref and see if we need to send
477 * the pack data.
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700478 */
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700479 for (ref = remote_refs; ref; ref = ref->next) {
Ronnie Sahlberg4ff17f12015-01-07 19:23:22 -0800480 switch (check_to_send_update(ref, args)) {
481 case 0: /* no error */
482 break;
483 case CHECK_REF_STATUS_REJECTED:
484 /*
485 * When we know the server would reject a ref update if
486 * we were to send it and we're trying to send the refs
487 * atomically, abort the whole operation.
488 */
Rene Scharfe872d6512017-08-30 20:00:28 +0200489 if (use_atomic) {
490 strbuf_release(&req_buf);
491 strbuf_release(&cap_buf);
Ronnie Sahlberg4ff17f12015-01-07 19:23:22 -0800492 return atomic_push_failure(args, remote_refs, ref);
Rene Scharfe872d6512017-08-30 20:00:28 +0200493 }
Jeff King1cf01a32017-09-21 02:25:41 -0400494 /* else fallthrough */
Ronnie Sahlberg4ff17f12015-01-07 19:23:22 -0800495 default:
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700496 continue;
Ronnie Sahlberg4ff17f12015-01-07 19:23:22 -0800497 }
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700498 if (!ref->deletion)
Junio C Hamanoab2b0c92014-08-15 12:23:51 -0700499 need_pack_data = 1;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700500
Junio C Hamanob783aa72014-08-15 12:29:42 -0700501 if (args->dry_run || !status_report)
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700502 ref->status = REF_STATUS_OK;
Junio C Hamanob783aa72014-08-15 12:29:42 -0700503 else
504 ref->status = REF_STATUS_EXPECTING_REPORT;
505 }
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700506
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700507 /*
508 * Finally, tell the other end!
509 */
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700510 for (ref = remote_refs; ref; ref = ref->next) {
Junio C Hamanob783aa72014-08-15 12:29:42 -0700511 char *old_hex, *new_hex;
512
Dave Borowitz30261092015-08-19 11:26:46 -0400513 if (args->dry_run || push_cert_nonce)
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700514 continue;
515
Stefan Beller7582e932015-01-07 19:23:21 -0800516 if (check_to_send_update(ref, args) < 0)
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700517 continue;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700518
brian m. carlsonf4e54d02015-11-10 02:22:20 +0000519 old_hex = oid_to_hex(&ref->old_oid);
520 new_hex = oid_to_hex(&ref->new_oid);
Junio C Hamanoc67072b2014-08-19 13:02:19 -0700521 if (!cmds_sent) {
Junio C Hamanob783aa72014-08-15 12:29:42 -0700522 packet_buf_write(&req_buf,
523 "%s %s %s%c%s",
524 old_hex, new_hex, ref->name, 0,
525 cap_buf.buf);
Junio C Hamanoc67072b2014-08-19 13:02:19 -0700526 cmds_sent = 1;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700527 } else {
Junio C Hamanob783aa72014-08-15 12:29:42 -0700528 packet_buf_write(&req_buf, "%s %s %s",
529 old_hex, new_hex, ref->name);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700530 }
531 }
532
Brandon Williamseb7b9742017-03-22 15:21:59 -0700533 if (use_push_options) {
534 struct string_list_item *item;
535
536 packet_buf_flush(&req_buf);
537 for_each_string_list_item(item, args->push_options)
538 packet_buf_write(&req_buf, "%s", item->string);
539 }
540
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700541 if (args->stateless_rpc) {
Stefan Bellerc8813482018-05-17 15:51:46 -0700542 if (!args->dry_run && (cmds_sent || is_repository_shallow(the_repository))) {
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700543 packet_buf_flush(&req_buf);
544 send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX);
545 }
546 } else {
Jeff Kingcdf4fb82013-02-20 15:01:56 -0500547 write_or_die(out, req_buf.buf, req_buf.len);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700548 packet_flush(out);
549 }
550 strbuf_release(&req_buf);
Junio C Hamano887f3532014-08-15 11:37:01 -0700551 strbuf_release(&cap_buf);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700552
553 if (use_sideband && cmds_sent) {
554 memset(&demux, 0, sizeof(demux));
555 demux.proc = sideband_demux;
556 demux.data = fd;
557 demux.out = -1;
Jeff King3e8b06d2016-04-19 18:50:17 -0400558 demux.isolate_sigpipe = 1;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700559 if (start_async(&demux))
560 die("send-pack: unable to fork off sideband demultiplexer");
561 in = demux.out;
562 }
563
Masaya Suzuki2d103c32018-12-29 13:19:15 -0800564 packet_reader_init(&reader, in, NULL, 0,
565 PACKET_READ_CHOMP_NEWLINE |
566 PACKET_READ_DIE_ON_ERR_PACKET);
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800567
Junio C Hamanoab2b0c92014-08-15 12:23:51 -0700568 if (need_pack_data && cmds_sent) {
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700569 if (pack_objects(out, remote_refs, extra_have, args) < 0) {
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700570 if (args->stateless_rpc)
571 close(out);
572 if (git_connection_is_socket(conn))
573 shutdown(fd[0], SHUT_WR);
Jeff Kingba69f922017-03-07 08:38:51 -0500574
575 /*
576 * Do not even bother with the return value; we know we
Jeff Kingad7a4032019-11-12 21:07:19 -0500577 * are failing, and just want the error() side effects,
578 * as well as marking refs with their remote status (if
579 * we get one).
Jeff Kingba69f922017-03-07 08:38:51 -0500580 */
581 if (status_report)
Jeff Kingad7a4032019-11-12 21:07:19 -0500582 receive_status(&reader, remote_refs);
Jeff Kingba69f922017-03-07 08:38:51 -0500583
Jeff King739cf492016-04-19 18:45:17 -0400584 if (use_sideband) {
585 close(demux.out);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700586 finish_async(&demux);
Jeff King739cf492016-04-19 18:45:17 -0400587 }
Jens Lindstrom37cb1dd2013-10-22 15:36:02 +0200588 fd[1] = -1;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700589 return -1;
590 }
Jens Lindstrom37cb1dd2013-10-22 15:36:02 +0200591 if (!args->stateless_rpc)
592 /* Closed by pack_objects() via start_command() */
593 fd[1] = -1;
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700594 }
595 if (args->stateless_rpc && cmds_sent)
596 packet_flush(out);
597
598 if (status_report && cmds_sent)
Masaya Suzuki01f9ec62018-12-29 13:19:14 -0800599 ret = receive_status(&reader, remote_refs);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700600 else
601 ret = 0;
602 if (args->stateless_rpc)
603 packet_flush(out);
604
605 if (use_sideband && cmds_sent) {
Jeff King739cf492016-04-19 18:45:17 -0400606 close(demux.out);
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700607 if (finish_async(&demux)) {
608 error("error in sideband demultiplexer");
609 ret = -1;
610 }
Nguyễn Thái Ngọc Duyf5d942e2012-10-26 22:53:53 +0700611 }
612
613 if (ret < 0)
614 return ret;
615
616 if (args->porcelain)
617 return 0;
618
619 for (ref = remote_refs; ref; ref = ref->next) {
620 switch (ref->status) {
621 case REF_STATUS_NONE:
622 case REF_STATUS_UPTODATE:
623 case REF_STATUS_OK:
624 break;
625 default:
626 return -1;
627 }
628 }
629 return 0;
630}