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Commit | Line | Data |
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f5d942e1 NTND |
1 | #include "builtin.h" |
2 | #include "commit.h" | |
3 | #include "refs.h" | |
4 | #include "pkt-line.h" | |
5 | #include "sideband.h" | |
6 | #include "run-command.h" | |
7 | #include "remote.h" | |
47a59185 | 8 | #include "connect.h" |
f5d942e1 NTND |
9 | #include "send-pack.h" |
10 | #include "quote.h" | |
11 | #include "transport.h" | |
12 | #include "version.h" | |
13eb4626 | 13 | #include "sha1-array.h" |
f5d942e1 NTND |
14 | |
15 | static int feed_object(const unsigned char *sha1, int fd, int negative) | |
16 | { | |
17 | char buf[42]; | |
18 | ||
19 | if (negative && !has_sha1_file(sha1)) | |
20 | return 1; | |
21 | ||
22 | memcpy(buf + negative, sha1_to_hex(sha1), 40); | |
23 | if (negative) | |
24 | buf[0] = '^'; | |
25 | buf[40 + negative] = '\n'; | |
26 | return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs"); | |
27 | } | |
28 | ||
29 | /* | |
30 | * Make a pack stream and spit it out into file descriptor fd | |
31 | */ | |
13eb4626 | 32 | static int pack_objects(int fd, struct ref *refs, struct sha1_array *extra, struct send_pack_args *args) |
f5d942e1 NTND |
33 | { |
34 | /* | |
35 | * The child becomes pack-objects --revs; we feed | |
36 | * the revision parameters to it via its stdin and | |
37 | * let its stdout go back to the other end. | |
38 | */ | |
39 | const char *argv[] = { | |
40 | "pack-objects", | |
41 | "--all-progress-implied", | |
42 | "--revs", | |
43 | "--stdout", | |
44 | NULL, | |
45 | NULL, | |
46 | NULL, | |
47 | NULL, | |
48 | NULL, | |
49 | }; | |
50 | struct child_process po; | |
51 | int i; | |
52 | ||
53 | i = 4; | |
54 | if (args->use_thin_pack) | |
55 | argv[i++] = "--thin"; | |
56 | if (args->use_ofs_delta) | |
57 | argv[i++] = "--delta-base-offset"; | |
58 | if (args->quiet || !args->progress) | |
59 | argv[i++] = "-q"; | |
60 | if (args->progress) | |
61 | argv[i++] = "--progress"; | |
62 | memset(&po, 0, sizeof(po)); | |
63 | po.argv = argv; | |
64 | po.in = -1; | |
65 | po.out = args->stateless_rpc ? -1 : fd; | |
66 | po.git_cmd = 1; | |
67 | if (start_command(&po)) | |
68 | die_errno("git pack-objects failed"); | |
69 | ||
70 | /* | |
71 | * We feed the pack-objects we just spawned with revision | |
72 | * parameters by writing to the pipe. | |
73 | */ | |
74 | for (i = 0; i < extra->nr; i++) | |
13eb4626 | 75 | if (!feed_object(extra->sha1[i], po.in, 1)) |
f5d942e1 NTND |
76 | break; |
77 | ||
78 | while (refs) { | |
79 | if (!is_null_sha1(refs->old_sha1) && | |
80 | !feed_object(refs->old_sha1, po.in, 1)) | |
81 | break; | |
82 | if (!is_null_sha1(refs->new_sha1) && | |
83 | !feed_object(refs->new_sha1, po.in, 0)) | |
84 | break; | |
85 | refs = refs->next; | |
86 | } | |
87 | ||
88 | close(po.in); | |
89 | ||
90 | if (args->stateless_rpc) { | |
91 | char *buf = xmalloc(LARGE_PACKET_MAX); | |
92 | while (1) { | |
93 | ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX); | |
94 | if (n <= 0) | |
95 | break; | |
96 | send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX); | |
97 | } | |
98 | free(buf); | |
99 | close(po.out); | |
100 | po.out = -1; | |
101 | } | |
102 | ||
103 | if (finish_command(&po)) | |
104 | return -1; | |
105 | return 0; | |
106 | } | |
107 | ||
108 | static int receive_status(int in, struct ref *refs) | |
109 | { | |
110 | struct ref *hint; | |
f5d942e1 | 111 | int ret = 0; |
74543a04 | 112 | char *line = packet_read_line(in, NULL); |
59556548 | 113 | if (!starts_with(line, "unpack ")) |
f5d942e1 | 114 | return error("did not receive remote status"); |
819b929d | 115 | if (strcmp(line, "unpack ok")) { |
f5d942e1 NTND |
116 | error("unpack failed: %s", line + 7); |
117 | ret = -1; | |
118 | } | |
119 | hint = NULL; | |
120 | while (1) { | |
121 | char *refname; | |
122 | char *msg; | |
74543a04 JK |
123 | line = packet_read_line(in, NULL); |
124 | if (!line) | |
f5d942e1 | 125 | break; |
59556548 | 126 | if (!starts_with(line, "ok ") && !starts_with(line, "ng ")) { |
8f9e3e49 | 127 | error("invalid ref status from remote: %s", line); |
f5d942e1 NTND |
128 | ret = -1; |
129 | break; | |
130 | } | |
131 | ||
f5d942e1 NTND |
132 | refname = line + 3; |
133 | msg = strchr(refname, ' '); | |
134 | if (msg) | |
135 | *msg++ = '\0'; | |
136 | ||
137 | /* first try searching at our hint, falling back to all refs */ | |
138 | if (hint) | |
139 | hint = find_ref_by_name(hint, refname); | |
140 | if (!hint) | |
141 | hint = find_ref_by_name(refs, refname); | |
142 | if (!hint) { | |
143 | warning("remote reported status on unknown ref: %s", | |
144 | refname); | |
145 | continue; | |
146 | } | |
147 | if (hint->status != REF_STATUS_EXPECTING_REPORT) { | |
148 | warning("remote reported status on unexpected ref: %s", | |
149 | refname); | |
150 | continue; | |
151 | } | |
152 | ||
153 | if (line[0] == 'o' && line[1] == 'k') | |
154 | hint->status = REF_STATUS_OK; | |
155 | else { | |
156 | hint->status = REF_STATUS_REMOTE_REJECT; | |
157 | ret = -1; | |
158 | } | |
159 | if (msg) | |
160 | hint->remote_status = xstrdup(msg); | |
161 | /* start our next search from the next ref */ | |
162 | hint = hint->next; | |
163 | } | |
164 | return ret; | |
165 | } | |
166 | ||
167 | static int sideband_demux(int in, int out, void *data) | |
168 | { | |
169 | int *fd = data, ret; | |
170 | #ifdef NO_PTHREADS | |
171 | close(fd[1]); | |
172 | #endif | |
173 | ret = recv_sideband("send-pack", fd[0], out); | |
174 | close(out); | |
175 | return ret; | |
176 | } | |
177 | ||
f2c681cf NTND |
178 | static int advertise_shallow_grafts_cb(const struct commit_graft *graft, void *cb) |
179 | { | |
180 | struct strbuf *sb = cb; | |
181 | if (graft->nr_parent == -1) | |
182 | packet_buf_write(sb, "shallow %s\n", sha1_to_hex(graft->sha1)); | |
183 | return 0; | |
184 | } | |
185 | ||
16a2743c | 186 | static void advertise_shallow_grafts_buf(struct strbuf *sb) |
f2c681cf NTND |
187 | { |
188 | if (!is_repository_shallow()) | |
189 | return; | |
190 | for_each_commit_graft(advertise_shallow_grafts_cb, sb); | |
191 | } | |
192 | ||
e40671a3 JH |
193 | static int ref_update_to_be_sent(const struct ref *ref, const struct send_pack_args *args) |
194 | { | |
195 | if (!ref->peer_ref && !args->send_mirror) | |
196 | return 0; | |
197 | ||
198 | /* Check for statuses set by set_ref_status_for_push() */ | |
199 | switch (ref->status) { | |
200 | case REF_STATUS_REJECT_NONFASTFORWARD: | |
201 | case REF_STATUS_REJECT_ALREADY_EXISTS: | |
202 | case REF_STATUS_REJECT_FETCH_FIRST: | |
203 | case REF_STATUS_REJECT_NEEDS_FORCE: | |
204 | case REF_STATUS_REJECT_STALE: | |
205 | case REF_STATUS_REJECT_NODELETE: | |
206 | case REF_STATUS_UPTODATE: | |
207 | return 0; | |
208 | default: | |
209 | return 1; | |
210 | } | |
211 | } | |
212 | ||
f5d942e1 NTND |
213 | int send_pack(struct send_pack_args *args, |
214 | int fd[], struct child_process *conn, | |
215 | struct ref *remote_refs, | |
13eb4626 | 216 | struct sha1_array *extra_have) |
f5d942e1 NTND |
217 | { |
218 | int in = fd[0]; | |
219 | int out = fd[1]; | |
220 | struct strbuf req_buf = STRBUF_INIT; | |
887f3533 | 221 | struct strbuf cap_buf = STRBUF_INIT; |
f5d942e1 | 222 | struct ref *ref; |
ab2b0c90 | 223 | int need_pack_data = 0; |
f5d942e1 NTND |
224 | int allow_deleting_refs = 0; |
225 | int status_report = 0; | |
226 | int use_sideband = 0; | |
227 | int quiet_supported = 0; | |
228 | int agent_supported = 0; | |
229 | unsigned cmds_sent = 0; | |
230 | int ret; | |
231 | struct async demux; | |
232 | ||
233 | /* Does the other end support the reporting? */ | |
234 | if (server_supports("report-status")) | |
235 | status_report = 1; | |
236 | if (server_supports("delete-refs")) | |
237 | allow_deleting_refs = 1; | |
238 | if (server_supports("ofs-delta")) | |
239 | args->use_ofs_delta = 1; | |
240 | if (server_supports("side-band-64k")) | |
241 | use_sideband = 1; | |
242 | if (server_supports("quiet")) | |
243 | quiet_supported = 1; | |
244 | if (server_supports("agent")) | |
245 | agent_supported = 1; | |
1ba98a79 CMN |
246 | if (server_supports("no-thin")) |
247 | args->use_thin_pack = 0; | |
f5d942e1 NTND |
248 | |
249 | if (!remote_refs) { | |
250 | fprintf(stderr, "No refs in common and none specified; doing nothing.\n" | |
251 | "Perhaps you should specify a branch such as 'master'.\n"); | |
252 | return 0; | |
253 | } | |
254 | ||
887f3533 JH |
255 | if (status_report) |
256 | strbuf_addstr(&cap_buf, " report-status"); | |
257 | if (use_sideband) | |
258 | strbuf_addstr(&cap_buf, " side-band-64k"); | |
259 | if (quiet_supported && (args->quiet || !args->progress)) | |
260 | strbuf_addstr(&cap_buf, " quiet"); | |
261 | if (agent_supported) | |
262 | strbuf_addf(&cap_buf, " agent=%s", git_user_agent_sanitized()); | |
263 | ||
621b0599 JH |
264 | /* |
265 | * NEEDSWORK: why does delete-refs have to be so specific to | |
266 | * send-pack machinery that set_ref_status_for_push() cannot | |
267 | * set this bit for us??? | |
268 | */ | |
269 | for (ref = remote_refs; ref; ref = ref->next) | |
270 | if (ref->deletion && !allow_deleting_refs) | |
271 | ref->status = REF_STATUS_REJECT_NODELETE; | |
272 | ||
5dbd7676 | 273 | if (!args->dry_run) |
f2c681cf | 274 | advertise_shallow_grafts_buf(&req_buf); |
5dbd7676 | 275 | |
f5d942e1 | 276 | /* |
b783aa71 JH |
277 | * Clear the status for each ref and see if we need to send |
278 | * the pack data. | |
f5d942e1 | 279 | */ |
f5d942e1 | 280 | for (ref = remote_refs; ref; ref = ref->next) { |
e40671a3 | 281 | if (!ref_update_to_be_sent(ref, args)) |
f5d942e1 NTND |
282 | continue; |
283 | ||
f5d942e1 | 284 | if (!ref->deletion) |
ab2b0c90 | 285 | need_pack_data = 1; |
f5d942e1 | 286 | |
b783aa71 | 287 | if (args->dry_run || !status_report) |
f5d942e1 | 288 | ref->status = REF_STATUS_OK; |
b783aa71 JH |
289 | else |
290 | ref->status = REF_STATUS_EXPECTING_REPORT; | |
291 | } | |
292 | ||
293 | /* | |
294 | * Finally, tell the other end! | |
295 | */ | |
296 | for (ref = remote_refs; ref; ref = ref->next) { | |
297 | char *old_hex, *new_hex; | |
298 | ||
299 | if (args->dry_run) | |
300 | continue; | |
301 | ||
302 | if (!ref_update_to_be_sent(ref, args)) | |
303 | continue; | |
304 | ||
305 | old_hex = sha1_to_hex(ref->old_sha1); | |
306 | new_hex = sha1_to_hex(ref->new_sha1); | |
c67072b9 | 307 | if (!cmds_sent) { |
b783aa71 JH |
308 | packet_buf_write(&req_buf, |
309 | "%s %s %s%c%s", | |
310 | old_hex, new_hex, ref->name, 0, | |
311 | cap_buf.buf); | |
c67072b9 JH |
312 | cmds_sent = 1; |
313 | } else { | |
b783aa71 JH |
314 | packet_buf_write(&req_buf, "%s %s %s", |
315 | old_hex, new_hex, ref->name); | |
c67072b9 | 316 | } |
f5d942e1 NTND |
317 | } |
318 | ||
319 | if (args->stateless_rpc) { | |
f2c681cf | 320 | if (!args->dry_run && (cmds_sent || is_repository_shallow())) { |
f5d942e1 NTND |
321 | packet_buf_flush(&req_buf); |
322 | send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX); | |
323 | } | |
324 | } else { | |
cdf4fb8e | 325 | write_or_die(out, req_buf.buf, req_buf.len); |
f5d942e1 NTND |
326 | packet_flush(out); |
327 | } | |
328 | strbuf_release(&req_buf); | |
887f3533 | 329 | strbuf_release(&cap_buf); |
f5d942e1 NTND |
330 | |
331 | if (use_sideband && cmds_sent) { | |
332 | memset(&demux, 0, sizeof(demux)); | |
333 | demux.proc = sideband_demux; | |
334 | demux.data = fd; | |
335 | demux.out = -1; | |
336 | if (start_async(&demux)) | |
337 | die("send-pack: unable to fork off sideband demultiplexer"); | |
338 | in = demux.out; | |
339 | } | |
340 | ||
ab2b0c90 | 341 | if (need_pack_data && cmds_sent) { |
f5d942e1 NTND |
342 | if (pack_objects(out, remote_refs, extra_have, args) < 0) { |
343 | for (ref = remote_refs; ref; ref = ref->next) | |
344 | ref->status = REF_STATUS_NONE; | |
345 | if (args->stateless_rpc) | |
346 | close(out); | |
347 | if (git_connection_is_socket(conn)) | |
348 | shutdown(fd[0], SHUT_WR); | |
349 | if (use_sideband) | |
350 | finish_async(&demux); | |
37cb1dd6 | 351 | fd[1] = -1; |
f5d942e1 NTND |
352 | return -1; |
353 | } | |
37cb1dd6 JL |
354 | if (!args->stateless_rpc) |
355 | /* Closed by pack_objects() via start_command() */ | |
356 | fd[1] = -1; | |
f5d942e1 NTND |
357 | } |
358 | if (args->stateless_rpc && cmds_sent) | |
359 | packet_flush(out); | |
360 | ||
361 | if (status_report && cmds_sent) | |
362 | ret = receive_status(in, remote_refs); | |
363 | else | |
364 | ret = 0; | |
365 | if (args->stateless_rpc) | |
366 | packet_flush(out); | |
367 | ||
368 | if (use_sideband && cmds_sent) { | |
369 | if (finish_async(&demux)) { | |
370 | error("error in sideband demultiplexer"); | |
371 | ret = -1; | |
372 | } | |
373 | close(demux.out); | |
374 | } | |
375 | ||
376 | if (ret < 0) | |
377 | return ret; | |
378 | ||
379 | if (args->porcelain) | |
380 | return 0; | |
381 | ||
382 | for (ref = remote_refs; ref; ref = ref->next) { | |
383 | switch (ref->status) { | |
384 | case REF_STATUS_NONE: | |
385 | case REF_STATUS_UPTODATE: | |
386 | case REF_STATUS_OK: | |
387 | break; | |
388 | default: | |
389 | return -1; | |
390 | } | |
391 | } | |
392 | return 0; | |
393 | } |