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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" | |
13 | ||
14 | static int feed_object(const unsigned char *sha1, int fd, int negative) | |
15 | { | |
16 | char buf[42]; | |
17 | ||
18 | if (negative && !has_sha1_file(sha1)) | |
19 | return 1; | |
20 | ||
21 | memcpy(buf + negative, sha1_to_hex(sha1), 40); | |
22 | if (negative) | |
23 | buf[0] = '^'; | |
24 | buf[40 + negative] = '\n'; | |
25 | return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs"); | |
26 | } | |
27 | ||
28 | /* | |
29 | * Make a pack stream and spit it out into file descriptor fd | |
30 | */ | |
31 | static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra, struct send_pack_args *args) | |
32 | { | |
33 | /* | |
34 | * The child becomes pack-objects --revs; we feed | |
35 | * the revision parameters to it via its stdin and | |
36 | * let its stdout go back to the other end. | |
37 | */ | |
38 | const char *argv[] = { | |
39 | "pack-objects", | |
40 | "--all-progress-implied", | |
41 | "--revs", | |
42 | "--stdout", | |
43 | NULL, | |
44 | NULL, | |
45 | NULL, | |
46 | NULL, | |
47 | NULL, | |
48 | }; | |
49 | struct child_process po; | |
50 | int i; | |
51 | ||
52 | i = 4; | |
53 | if (args->use_thin_pack) | |
54 | argv[i++] = "--thin"; | |
55 | if (args->use_ofs_delta) | |
56 | argv[i++] = "--delta-base-offset"; | |
57 | if (args->quiet || !args->progress) | |
58 | argv[i++] = "-q"; | |
59 | if (args->progress) | |
60 | argv[i++] = "--progress"; | |
61 | memset(&po, 0, sizeof(po)); | |
62 | po.argv = argv; | |
63 | po.in = -1; | |
64 | po.out = args->stateless_rpc ? -1 : fd; | |
65 | po.git_cmd = 1; | |
66 | if (start_command(&po)) | |
67 | die_errno("git pack-objects failed"); | |
68 | ||
69 | /* | |
70 | * We feed the pack-objects we just spawned with revision | |
71 | * parameters by writing to the pipe. | |
72 | */ | |
73 | for (i = 0; i < extra->nr; i++) | |
74 | if (!feed_object(extra->array[i], po.in, 1)) | |
75 | break; | |
76 | ||
77 | while (refs) { | |
78 | if (!is_null_sha1(refs->old_sha1) && | |
79 | !feed_object(refs->old_sha1, po.in, 1)) | |
80 | break; | |
81 | if (!is_null_sha1(refs->new_sha1) && | |
82 | !feed_object(refs->new_sha1, po.in, 0)) | |
83 | break; | |
84 | refs = refs->next; | |
85 | } | |
86 | ||
87 | close(po.in); | |
88 | ||
89 | if (args->stateless_rpc) { | |
90 | char *buf = xmalloc(LARGE_PACKET_MAX); | |
91 | while (1) { | |
92 | ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX); | |
93 | if (n <= 0) | |
94 | break; | |
95 | send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX); | |
96 | } | |
97 | free(buf); | |
98 | close(po.out); | |
99 | po.out = -1; | |
100 | } | |
101 | ||
102 | if (finish_command(&po)) | |
103 | return -1; | |
104 | return 0; | |
105 | } | |
106 | ||
107 | static int receive_status(int in, struct ref *refs) | |
108 | { | |
109 | struct ref *hint; | |
f5d942e1 | 110 | int ret = 0; |
74543a04 | 111 | char *line = packet_read_line(in, NULL); |
8f9e3e49 | 112 | if (prefixcmp(line, "unpack ")) |
f5d942e1 | 113 | return error("did not receive remote status"); |
819b929d | 114 | if (strcmp(line, "unpack ok")) { |
f5d942e1 NTND |
115 | error("unpack failed: %s", line + 7); |
116 | ret = -1; | |
117 | } | |
118 | hint = NULL; | |
119 | while (1) { | |
120 | char *refname; | |
121 | char *msg; | |
74543a04 JK |
122 | line = packet_read_line(in, NULL); |
123 | if (!line) | |
f5d942e1 | 124 | break; |
8f9e3e49 JK |
125 | if (prefixcmp(line, "ok ") && prefixcmp(line, "ng ")) { |
126 | error("invalid ref status from remote: %s", line); | |
f5d942e1 NTND |
127 | ret = -1; |
128 | break; | |
129 | } | |
130 | ||
f5d942e1 NTND |
131 | refname = line + 3; |
132 | msg = strchr(refname, ' '); | |
133 | if (msg) | |
134 | *msg++ = '\0'; | |
135 | ||
136 | /* first try searching at our hint, falling back to all refs */ | |
137 | if (hint) | |
138 | hint = find_ref_by_name(hint, refname); | |
139 | if (!hint) | |
140 | hint = find_ref_by_name(refs, refname); | |
141 | if (!hint) { | |
142 | warning("remote reported status on unknown ref: %s", | |
143 | refname); | |
144 | continue; | |
145 | } | |
146 | if (hint->status != REF_STATUS_EXPECTING_REPORT) { | |
147 | warning("remote reported status on unexpected ref: %s", | |
148 | refname); | |
149 | continue; | |
150 | } | |
151 | ||
152 | if (line[0] == 'o' && line[1] == 'k') | |
153 | hint->status = REF_STATUS_OK; | |
154 | else { | |
155 | hint->status = REF_STATUS_REMOTE_REJECT; | |
156 | ret = -1; | |
157 | } | |
158 | if (msg) | |
159 | hint->remote_status = xstrdup(msg); | |
160 | /* start our next search from the next ref */ | |
161 | hint = hint->next; | |
162 | } | |
163 | return ret; | |
164 | } | |
165 | ||
166 | static int sideband_demux(int in, int out, void *data) | |
167 | { | |
168 | int *fd = data, ret; | |
169 | #ifdef NO_PTHREADS | |
170 | close(fd[1]); | |
171 | #endif | |
172 | ret = recv_sideband("send-pack", fd[0], out); | |
173 | close(out); | |
174 | return ret; | |
175 | } | |
176 | ||
177 | int send_pack(struct send_pack_args *args, | |
178 | int fd[], struct child_process *conn, | |
179 | struct ref *remote_refs, | |
180 | struct extra_have_objects *extra_have) | |
181 | { | |
182 | int in = fd[0]; | |
183 | int out = fd[1]; | |
184 | struct strbuf req_buf = STRBUF_INIT; | |
185 | struct ref *ref; | |
186 | int new_refs; | |
187 | int allow_deleting_refs = 0; | |
188 | int status_report = 0; | |
189 | int use_sideband = 0; | |
190 | int quiet_supported = 0; | |
191 | int agent_supported = 0; | |
192 | unsigned cmds_sent = 0; | |
193 | int ret; | |
194 | struct async demux; | |
195 | ||
196 | /* Does the other end support the reporting? */ | |
197 | if (server_supports("report-status")) | |
198 | status_report = 1; | |
199 | if (server_supports("delete-refs")) | |
200 | allow_deleting_refs = 1; | |
201 | if (server_supports("ofs-delta")) | |
202 | args->use_ofs_delta = 1; | |
203 | if (server_supports("side-band-64k")) | |
204 | use_sideband = 1; | |
205 | if (server_supports("quiet")) | |
206 | quiet_supported = 1; | |
207 | if (server_supports("agent")) | |
208 | agent_supported = 1; | |
209 | ||
210 | if (!remote_refs) { | |
211 | fprintf(stderr, "No refs in common and none specified; doing nothing.\n" | |
212 | "Perhaps you should specify a branch such as 'master'.\n"); | |
213 | return 0; | |
214 | } | |
215 | ||
216 | /* | |
217 | * Finally, tell the other end! | |
218 | */ | |
219 | new_refs = 0; | |
220 | for (ref = remote_refs; ref; ref = ref->next) { | |
221 | if (!ref->peer_ref && !args->send_mirror) | |
222 | continue; | |
223 | ||
224 | /* Check for statuses set by set_ref_status_for_push() */ | |
225 | switch (ref->status) { | |
226 | case REF_STATUS_REJECT_NONFASTFORWARD: | |
dbfeddb1 | 227 | case REF_STATUS_REJECT_ALREADY_EXISTS: |
75e5c0dc JH |
228 | case REF_STATUS_REJECT_FETCH_FIRST: |
229 | case REF_STATUS_REJECT_NEEDS_FORCE: | |
631b5ef2 | 230 | case REF_STATUS_REJECT_STALE: |
f5d942e1 NTND |
231 | case REF_STATUS_UPTODATE: |
232 | continue; | |
233 | default: | |
234 | ; /* do nothing */ | |
235 | } | |
236 | ||
237 | if (ref->deletion && !allow_deleting_refs) { | |
238 | ref->status = REF_STATUS_REJECT_NODELETE; | |
239 | continue; | |
240 | } | |
241 | ||
242 | if (!ref->deletion) | |
243 | new_refs++; | |
244 | ||
245 | if (args->dry_run) { | |
246 | ref->status = REF_STATUS_OK; | |
247 | } else { | |
248 | char *old_hex = sha1_to_hex(ref->old_sha1); | |
249 | char *new_hex = sha1_to_hex(ref->new_sha1); | |
250 | int quiet = quiet_supported && (args->quiet || !args->progress); | |
251 | ||
252 | if (!cmds_sent && (status_report || use_sideband || | |
253 | quiet || agent_supported)) { | |
254 | packet_buf_write(&req_buf, | |
255 | "%s %s %s%c%s%s%s%s%s", | |
256 | old_hex, new_hex, ref->name, 0, | |
257 | status_report ? " report-status" : "", | |
258 | use_sideband ? " side-band-64k" : "", | |
259 | quiet ? " quiet" : "", | |
260 | agent_supported ? " agent=" : "", | |
261 | agent_supported ? git_user_agent_sanitized() : "" | |
262 | ); | |
263 | } | |
264 | else | |
265 | packet_buf_write(&req_buf, "%s %s %s", | |
266 | old_hex, new_hex, ref->name); | |
267 | ref->status = status_report ? | |
268 | REF_STATUS_EXPECTING_REPORT : | |
269 | REF_STATUS_OK; | |
270 | cmds_sent++; | |
271 | } | |
272 | } | |
273 | ||
274 | if (args->stateless_rpc) { | |
275 | if (!args->dry_run && cmds_sent) { | |
276 | packet_buf_flush(&req_buf); | |
277 | send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX); | |
278 | } | |
279 | } else { | |
cdf4fb8e | 280 | write_or_die(out, req_buf.buf, req_buf.len); |
f5d942e1 NTND |
281 | packet_flush(out); |
282 | } | |
283 | strbuf_release(&req_buf); | |
284 | ||
285 | if (use_sideband && cmds_sent) { | |
286 | memset(&demux, 0, sizeof(demux)); | |
287 | demux.proc = sideband_demux; | |
288 | demux.data = fd; | |
289 | demux.out = -1; | |
290 | if (start_async(&demux)) | |
291 | die("send-pack: unable to fork off sideband demultiplexer"); | |
292 | in = demux.out; | |
293 | } | |
294 | ||
295 | if (new_refs && cmds_sent) { | |
296 | if (pack_objects(out, remote_refs, extra_have, args) < 0) { | |
297 | for (ref = remote_refs; ref; ref = ref->next) | |
298 | ref->status = REF_STATUS_NONE; | |
299 | if (args->stateless_rpc) | |
300 | close(out); | |
301 | if (git_connection_is_socket(conn)) | |
302 | shutdown(fd[0], SHUT_WR); | |
303 | if (use_sideband) | |
304 | finish_async(&demux); | |
37cb1dd6 | 305 | fd[1] = -1; |
f5d942e1 NTND |
306 | return -1; |
307 | } | |
37cb1dd6 JL |
308 | if (!args->stateless_rpc) |
309 | /* Closed by pack_objects() via start_command() */ | |
310 | fd[1] = -1; | |
f5d942e1 NTND |
311 | } |
312 | if (args->stateless_rpc && cmds_sent) | |
313 | packet_flush(out); | |
314 | ||
315 | if (status_report && cmds_sent) | |
316 | ret = receive_status(in, remote_refs); | |
317 | else | |
318 | ret = 0; | |
319 | if (args->stateless_rpc) | |
320 | packet_flush(out); | |
321 | ||
322 | if (use_sideband && cmds_sent) { | |
323 | if (finish_async(&demux)) { | |
324 | error("error in sideband demultiplexer"); | |
325 | ret = -1; | |
326 | } | |
327 | close(demux.out); | |
328 | } | |
329 | ||
330 | if (ret < 0) | |
331 | return ret; | |
332 | ||
333 | if (args->porcelain) | |
334 | return 0; | |
335 | ||
336 | for (ref = remote_refs; ref; ref = ref->next) { | |
337 | switch (ref->status) { | |
338 | case REF_STATUS_NONE: | |
339 | case REF_STATUS_UPTODATE: | |
340 | case REF_STATUS_OK: | |
341 | break; | |
342 | default: | |
343 | return -1; | |
344 | } | |
345 | } | |
346 | return 0; | |
347 | } |