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Commit | Line | Data |
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6eb996b5 DB |
1 | #include "cache.h" |
2 | #include "transport.h" | |
ae4efe19 | 3 | #include "quote.h" |
6eb996b5 DB |
4 | #include "run-command.h" |
5 | #include "commit.h" | |
6 | #include "diff.h" | |
7 | #include "revision.h" | |
ef08ef9e | 8 | #include "quote.h" |
72ff8943 | 9 | #include "remote.h" |
73b49a75 | 10 | #include "string-list.h" |
7851b1e6 | 11 | #include "thread-utils.h" |
7851b1e6 | 12 | |
bf3c523c IL |
13 | static int debug; |
14 | ||
9cba13ca | 15 | struct helper_data { |
6eb996b5 DB |
16 | const char *name; |
17 | struct child_process *helper; | |
292ce46b | 18 | FILE *out; |
ef08ef9e | 19 | unsigned fetch : 1, |
a24a32dd | 20 | import : 1, |
73b49a75 | 21 | export : 1, |
ae4efe19 | 22 | option : 1, |
fa8c097c IL |
23 | push : 1, |
24 | connect : 1, | |
25 | no_disconnect_req : 1; | |
72ff8943 DB |
26 | /* These go from remote name (as in "list") to private name */ |
27 | struct refspec *refspecs; | |
28 | int refspec_nr; | |
61b075bd IL |
29 | /* Transport options for fetch-pack/send-pack (should one of |
30 | * those be invoked). | |
31 | */ | |
32 | struct git_transport_options transport_options; | |
6eb996b5 DB |
33 | }; |
34 | ||
bf3c523c IL |
35 | static void sendline(struct helper_data *helper, struct strbuf *buffer) |
36 | { | |
37 | if (debug) | |
38 | fprintf(stderr, "Debug: Remote helper: -> %s", buffer->buf); | |
39 | if (write_in_full(helper->helper->in, buffer->buf, buffer->len) | |
40 | != buffer->len) | |
41 | die_errno("Full write to remote helper failed"); | |
42 | } | |
43 | ||
fa8c097c | 44 | static int recvline_fh(FILE *helper, struct strbuf *buffer) |
bf3c523c IL |
45 | { |
46 | strbuf_reset(buffer); | |
47 | if (debug) | |
48 | fprintf(stderr, "Debug: Remote helper: Waiting...\n"); | |
fa8c097c | 49 | if (strbuf_getline(buffer, helper, '\n') == EOF) { |
bf3c523c IL |
50 | if (debug) |
51 | fprintf(stderr, "Debug: Remote helper quit.\n"); | |
52 | exit(128); | |
53 | } | |
54 | ||
55 | if (debug) | |
56 | fprintf(stderr, "Debug: Remote helper: <- %s\n", buffer->buf); | |
57 | return 0; | |
58 | } | |
59 | ||
fa8c097c IL |
60 | static int recvline(struct helper_data *helper, struct strbuf *buffer) |
61 | { | |
62 | return recvline_fh(helper->out, buffer); | |
63 | } | |
64 | ||
bf3c523c IL |
65 | static void xchgline(struct helper_data *helper, struct strbuf *buffer) |
66 | { | |
67 | sendline(helper, buffer); | |
68 | recvline(helper, buffer); | |
69 | } | |
70 | ||
71 | static void write_constant(int fd, const char *str) | |
72 | { | |
73 | if (debug) | |
74 | fprintf(stderr, "Debug: Remote helper: -> %s", str); | |
75 | if (write_in_full(fd, str, strlen(str)) != strlen(str)) | |
76 | die_errno("Full write to remote helper failed"); | |
77 | } | |
78 | ||
c2e86add | 79 | static const char *remove_ext_force(const char *url) |
25d5cc48 IL |
80 | { |
81 | if (url) { | |
82 | const char *colon = strchr(url, ':'); | |
83 | if (colon && colon[1] == ':') | |
84 | return colon + 2; | |
85 | } | |
86 | return url; | |
87 | } | |
88 | ||
fa8c097c IL |
89 | static void do_take_over(struct transport *transport) |
90 | { | |
91 | struct helper_data *data; | |
92 | data = (struct helper_data *)transport->data; | |
93 | transport_take_over(transport, data->helper); | |
94 | fclose(data->out); | |
95 | free(data); | |
96 | } | |
97 | ||
6eb996b5 DB |
98 | static struct child_process *get_helper(struct transport *transport) |
99 | { | |
100 | struct helper_data *data = transport->data; | |
101 | struct strbuf buf = STRBUF_INIT; | |
102 | struct child_process *helper; | |
72ff8943 DB |
103 | const char **refspecs = NULL; |
104 | int refspec_nr = 0; | |
105 | int refspec_alloc = 0; | |
61b075bd | 106 | int duped; |
6b02de3b | 107 | int code; |
6eb996b5 DB |
108 | |
109 | if (data->helper) | |
110 | return data->helper; | |
111 | ||
112 | helper = xcalloc(1, sizeof(*helper)); | |
113 | helper->in = -1; | |
114 | helper->out = -1; | |
115 | helper->err = 0; | |
116 | helper->argv = xcalloc(4, sizeof(*helper->argv)); | |
6b02de3b | 117 | strbuf_addf(&buf, "git-remote-%s", data->name); |
6eb996b5 DB |
118 | helper->argv[0] = strbuf_detach(&buf, NULL); |
119 | helper->argv[1] = transport->remote->name; | |
25d5cc48 | 120 | helper->argv[2] = remove_ext_force(transport->url); |
6b02de3b IL |
121 | helper->git_cmd = 0; |
122 | helper->silent_exec_failure = 1; | |
123 | code = start_command(helper); | |
124 | if (code < 0 && errno == ENOENT) | |
125 | die("Unable to find remote helper for '%s'", data->name); | |
126 | else if (code != 0) | |
127 | exit(code); | |
128 | ||
6eb996b5 | 129 | data->helper = helper; |
fa8c097c | 130 | data->no_disconnect_req = 0; |
6eb996b5 | 131 | |
61b075bd IL |
132 | /* |
133 | * Open the output as FILE* so strbuf_getline() can be used. | |
134 | * Do this with duped fd because fclose() will close the fd, | |
135 | * and stuff like taking over will require the fd to remain. | |
61b075bd IL |
136 | */ |
137 | duped = dup(helper->out); | |
138 | if (duped < 0) | |
139 | die_errno("Can't dup helper output fd"); | |
140 | data->out = xfdopen(duped, "r"); | |
141 | ||
bf3c523c | 142 | write_constant(helper->in, "capabilities\n"); |
2d14d65c | 143 | |
6eb996b5 | 144 | while (1) { |
28ed5b35 IL |
145 | const char *capname; |
146 | int mandatory = 0; | |
bf3c523c | 147 | recvline(data, &buf); |
6eb996b5 DB |
148 | |
149 | if (!*buf.buf) | |
150 | break; | |
28ed5b35 IL |
151 | |
152 | if (*buf.buf == '*') { | |
153 | capname = buf.buf + 1; | |
154 | mandatory = 1; | |
155 | } else | |
156 | capname = buf.buf; | |
157 | ||
bf3c523c | 158 | if (debug) |
28ed5b35 IL |
159 | fprintf(stderr, "Debug: Got cap %s\n", capname); |
160 | if (!strcmp(capname, "fetch")) | |
6eb996b5 | 161 | data->fetch = 1; |
28ed5b35 | 162 | else if (!strcmp(capname, "option")) |
ef08ef9e | 163 | data->option = 1; |
28ed5b35 | 164 | else if (!strcmp(capname, "push")) |
ae4efe19 | 165 | data->push = 1; |
28ed5b35 | 166 | else if (!strcmp(capname, "import")) |
e65e91ed | 167 | data->import = 1; |
73b49a75 SR |
168 | else if (!strcmp(capname, "export")) |
169 | data->export = 1; | |
28ed5b35 | 170 | else if (!data->refspecs && !prefixcmp(capname, "refspec ")) { |
72ff8943 DB |
171 | ALLOC_GROW(refspecs, |
172 | refspec_nr + 1, | |
173 | refspec_alloc); | |
174 | refspecs[refspec_nr++] = strdup(buf.buf + strlen("refspec ")); | |
fa8c097c IL |
175 | } else if (!strcmp(capname, "connect")) { |
176 | data->connect = 1; | |
88f3b2b0 SR |
177 | } else if (!strcmp(buf.buf, "gitdir")) { |
178 | struct strbuf gitdir = STRBUF_INIT; | |
179 | strbuf_addf(&gitdir, "gitdir %s\n", get_git_dir()); | |
180 | sendline(data, &gitdir); | |
181 | strbuf_release(&gitdir); | |
28ed5b35 | 182 | } else if (mandatory) { |
9517e6b8 | 183 | die("Unknown mandatory capability %s. This remote " |
28ed5b35 IL |
184 | "helper probably needs newer version of Git.\n", |
185 | capname); | |
72ff8943 DB |
186 | } |
187 | } | |
188 | if (refspecs) { | |
189 | int i; | |
190 | data->refspec_nr = refspec_nr; | |
191 | data->refspecs = parse_fetch_refspec(refspec_nr, refspecs); | |
192 | for (i = 0; i < refspec_nr; i++) { | |
193 | free((char *)refspecs[i]); | |
194 | } | |
195 | free(refspecs); | |
6eb996b5 | 196 | } |
b962dbdc | 197 | strbuf_release(&buf); |
bf3c523c IL |
198 | if (debug) |
199 | fprintf(stderr, "Debug: Capabilities complete.\n"); | |
6eb996b5 DB |
200 | return data->helper; |
201 | } | |
202 | ||
203 | static int disconnect_helper(struct transport *transport) | |
204 | { | |
205 | struct helper_data *data = transport->data; | |
bf3c523c IL |
206 | struct strbuf buf = STRBUF_INIT; |
207 | ||
6eb996b5 | 208 | if (data->helper) { |
bf3c523c IL |
209 | if (debug) |
210 | fprintf(stderr, "Debug: Disconnecting.\n"); | |
fa8c097c IL |
211 | if (!data->no_disconnect_req) { |
212 | strbuf_addf(&buf, "\n"); | |
213 | sendline(data, &buf); | |
214 | } | |
6eb996b5 | 215 | close(data->helper->in); |
61b075bd | 216 | close(data->helper->out); |
292ce46b | 217 | fclose(data->out); |
6eb996b5 DB |
218 | finish_command(data->helper); |
219 | free((char *)data->helper->argv[0]); | |
220 | free(data->helper->argv); | |
221 | free(data->helper); | |
222 | data->helper = NULL; | |
223 | } | |
224 | return 0; | |
225 | } | |
226 | ||
ef08ef9e SP |
227 | static const char *unsupported_options[] = { |
228 | TRANS_OPT_UPLOADPACK, | |
229 | TRANS_OPT_RECEIVEPACK, | |
230 | TRANS_OPT_THIN, | |
231 | TRANS_OPT_KEEP | |
232 | }; | |
233 | static const char *boolean_options[] = { | |
234 | TRANS_OPT_THIN, | |
235 | TRANS_OPT_KEEP, | |
236 | TRANS_OPT_FOLLOWTAGS | |
237 | }; | |
238 | ||
239 | static int set_helper_option(struct transport *transport, | |
240 | const char *name, const char *value) | |
241 | { | |
242 | struct helper_data *data = transport->data; | |
ef08ef9e SP |
243 | struct strbuf buf = STRBUF_INIT; |
244 | int i, ret, is_bool = 0; | |
245 | ||
bf3c523c IL |
246 | get_helper(transport); |
247 | ||
ef08ef9e SP |
248 | if (!data->option) |
249 | return 1; | |
250 | ||
251 | for (i = 0; i < ARRAY_SIZE(unsupported_options); i++) { | |
252 | if (!strcmp(name, unsupported_options[i])) | |
253 | return 1; | |
254 | } | |
255 | ||
256 | for (i = 0; i < ARRAY_SIZE(boolean_options); i++) { | |
257 | if (!strcmp(name, boolean_options[i])) { | |
258 | is_bool = 1; | |
259 | break; | |
260 | } | |
261 | } | |
262 | ||
263 | strbuf_addf(&buf, "option %s ", name); | |
264 | if (is_bool) | |
265 | strbuf_addstr(&buf, value ? "true" : "false"); | |
266 | else | |
267 | quote_c_style(value, &buf, NULL, 0); | |
268 | strbuf_addch(&buf, '\n'); | |
269 | ||
bf3c523c | 270 | xchgline(data, &buf); |
ef08ef9e SP |
271 | |
272 | if (!strcmp(buf.buf, "ok")) | |
273 | ret = 0; | |
274 | else if (!prefixcmp(buf.buf, "error")) { | |
275 | ret = -1; | |
276 | } else if (!strcmp(buf.buf, "unsupported")) | |
277 | ret = 1; | |
278 | else { | |
279 | warning("%s unexpectedly said: '%s'", data->name, buf.buf); | |
280 | ret = 1; | |
281 | } | |
282 | strbuf_release(&buf); | |
283 | return ret; | |
284 | } | |
285 | ||
286 | static void standard_options(struct transport *t) | |
287 | { | |
288 | char buf[16]; | |
289 | int n; | |
290 | int v = t->verbose; | |
ef08ef9e | 291 | |
d01b3c02 | 292 | set_helper_option(t, "progress", t->progress ? "true" : "false"); |
ef08ef9e SP |
293 | |
294 | n = snprintf(buf, sizeof(buf), "%d", v + 1); | |
295 | if (n >= sizeof(buf)) | |
296 | die("impossibly large verbosity value"); | |
297 | set_helper_option(t, "verbosity", buf); | |
298 | } | |
299 | ||
f2a37151 DB |
300 | static int release_helper(struct transport *transport) |
301 | { | |
72ff8943 DB |
302 | struct helper_data *data = transport->data; |
303 | free_refspec(data->refspec_nr, data->refspecs); | |
304 | data->refspecs = NULL; | |
f2a37151 DB |
305 | disconnect_helper(transport); |
306 | free(transport->data); | |
307 | return 0; | |
308 | } | |
309 | ||
6eb996b5 | 310 | static int fetch_with_fetch(struct transport *transport, |
37148311 | 311 | int nr_heads, struct ref **to_fetch) |
6eb996b5 | 312 | { |
292ce46b | 313 | struct helper_data *data = transport->data; |
6eb996b5 DB |
314 | int i; |
315 | struct strbuf buf = STRBUF_INIT; | |
316 | ||
ef08ef9e SP |
317 | standard_options(transport); |
318 | ||
6eb996b5 | 319 | for (i = 0; i < nr_heads; i++) { |
1088261f | 320 | const struct ref *posn = to_fetch[i]; |
6eb996b5 DB |
321 | if (posn->status & REF_STATUS_UPTODATE) |
322 | continue; | |
2d14d65c DB |
323 | |
324 | strbuf_addf(&buf, "fetch %s %s\n", | |
325 | sha1_to_hex(posn->old_sha1), posn->name); | |
292ce46b | 326 | } |
2d14d65c | 327 | |
292ce46b | 328 | strbuf_addch(&buf, '\n'); |
bf3c523c | 329 | sendline(data, &buf); |
292ce46b SP |
330 | |
331 | while (1) { | |
bf3c523c | 332 | recvline(data, &buf); |
292ce46b SP |
333 | |
334 | if (!prefixcmp(buf.buf, "lock ")) { | |
335 | const char *name = buf.buf + 5; | |
336 | if (transport->pack_lockfile) | |
337 | warning("%s also locked %s", data->name, name); | |
338 | else | |
339 | transport->pack_lockfile = xstrdup(name); | |
340 | } | |
341 | else if (!buf.len) | |
342 | break; | |
343 | else | |
344 | warning("%s unexpectedly said: '%s'", data->name, buf.buf); | |
6eb996b5 | 345 | } |
292ce46b | 346 | strbuf_release(&buf); |
6eb996b5 DB |
347 | return 0; |
348 | } | |
349 | ||
e65e91ed DB |
350 | static int get_importer(struct transport *transport, struct child_process *fastimport) |
351 | { | |
352 | struct child_process *helper = get_helper(transport); | |
353 | memset(fastimport, 0, sizeof(*fastimport)); | |
354 | fastimport->in = helper->out; | |
355 | fastimport->argv = xcalloc(5, sizeof(*fastimport->argv)); | |
356 | fastimport->argv[0] = "fast-import"; | |
357 | fastimport->argv[1] = "--quiet"; | |
358 | ||
359 | fastimport->git_cmd = 1; | |
360 | return start_command(fastimport); | |
361 | } | |
362 | ||
73b49a75 SR |
363 | static int get_exporter(struct transport *transport, |
364 | struct child_process *fastexport, | |
365 | const char *export_marks, | |
366 | const char *import_marks, | |
367 | struct string_list *revlist_args) | |
368 | { | |
369 | struct child_process *helper = get_helper(transport); | |
370 | int argc = 0, i; | |
371 | memset(fastexport, 0, sizeof(*fastexport)); | |
372 | ||
373 | /* we need to duplicate helper->in because we want to use it after | |
374 | * fastexport is done with it. */ | |
375 | fastexport->out = dup(helper->in); | |
376 | fastexport->argv = xcalloc(4 + revlist_args->nr, sizeof(*fastexport->argv)); | |
377 | fastexport->argv[argc++] = "fast-export"; | |
378 | if (export_marks) | |
379 | fastexport->argv[argc++] = export_marks; | |
380 | if (import_marks) | |
381 | fastexport->argv[argc++] = import_marks; | |
382 | ||
383 | for (i = 0; i < revlist_args->nr; i++) | |
384 | fastexport->argv[argc++] = revlist_args->items[i].string; | |
385 | ||
386 | fastexport->git_cmd = 1; | |
387 | return start_command(fastexport); | |
388 | } | |
389 | ||
e65e91ed DB |
390 | static int fetch_with_import(struct transport *transport, |
391 | int nr_heads, struct ref **to_fetch) | |
392 | { | |
393 | struct child_process fastimport; | |
72ff8943 | 394 | struct helper_data *data = transport->data; |
e65e91ed DB |
395 | int i; |
396 | struct ref *posn; | |
397 | struct strbuf buf = STRBUF_INIT; | |
398 | ||
bf3c523c IL |
399 | get_helper(transport); |
400 | ||
e65e91ed DB |
401 | if (get_importer(transport, &fastimport)) |
402 | die("Couldn't run fast-import"); | |
403 | ||
404 | for (i = 0; i < nr_heads; i++) { | |
405 | posn = to_fetch[i]; | |
406 | if (posn->status & REF_STATUS_UPTODATE) | |
407 | continue; | |
408 | ||
409 | strbuf_addf(&buf, "import %s\n", posn->name); | |
bf3c523c | 410 | sendline(data, &buf); |
e65e91ed DB |
411 | strbuf_reset(&buf); |
412 | } | |
413 | disconnect_helper(transport); | |
414 | finish_command(&fastimport); | |
b962dbdc SR |
415 | free(fastimport.argv); |
416 | fastimport.argv = NULL; | |
e65e91ed DB |
417 | |
418 | for (i = 0; i < nr_heads; i++) { | |
72ff8943 | 419 | char *private; |
e65e91ed DB |
420 | posn = to_fetch[i]; |
421 | if (posn->status & REF_STATUS_UPTODATE) | |
422 | continue; | |
72ff8943 DB |
423 | if (data->refspecs) |
424 | private = apply_refspecs(data->refspecs, data->refspec_nr, posn->name); | |
425 | else | |
426 | private = strdup(posn->name); | |
427 | read_ref(private, posn->old_sha1); | |
428 | free(private); | |
e65e91ed | 429 | } |
b962dbdc | 430 | strbuf_release(&buf); |
e65e91ed DB |
431 | return 0; |
432 | } | |
433 | ||
fa8c097c IL |
434 | static int process_connect_service(struct transport *transport, |
435 | const char *name, const char *exec) | |
436 | { | |
437 | struct helper_data *data = transport->data; | |
438 | struct strbuf cmdbuf = STRBUF_INIT; | |
439 | struct child_process *helper; | |
440 | int r, duped, ret = 0; | |
441 | FILE *input; | |
442 | ||
443 | helper = get_helper(transport); | |
444 | ||
445 | /* | |
446 | * Yes, dup the pipe another time, as we need unbuffered version | |
447 | * of input pipe as FILE*. fclose() closes the underlying fd and | |
448 | * stream buffering only can be changed before first I/O operation | |
449 | * on it. | |
450 | */ | |
451 | duped = dup(helper->out); | |
452 | if (duped < 0) | |
453 | die_errno("Can't dup helper output fd"); | |
454 | input = xfdopen(duped, "r"); | |
455 | setvbuf(input, NULL, _IONBF, 0); | |
456 | ||
457 | /* | |
458 | * Handle --upload-pack and friends. This is fire and forget... | |
459 | * just warn if it fails. | |
460 | */ | |
461 | if (strcmp(name, exec)) { | |
462 | r = set_helper_option(transport, "servpath", exec); | |
463 | if (r > 0) | |
464 | warning("Setting remote service path not supported by protocol."); | |
465 | else if (r < 0) | |
466 | warning("Invalid remote service path."); | |
467 | } | |
468 | ||
469 | if (data->connect) | |
470 | strbuf_addf(&cmdbuf, "connect %s\n", name); | |
471 | else | |
472 | goto exit; | |
473 | ||
474 | sendline(data, &cmdbuf); | |
475 | recvline_fh(input, &cmdbuf); | |
476 | if (!strcmp(cmdbuf.buf, "")) { | |
477 | data->no_disconnect_req = 1; | |
478 | if (debug) | |
479 | fprintf(stderr, "Debug: Smart transport connection " | |
480 | "ready.\n"); | |
481 | ret = 1; | |
482 | } else if (!strcmp(cmdbuf.buf, "fallback")) { | |
483 | if (debug) | |
484 | fprintf(stderr, "Debug: Falling back to dumb " | |
485 | "transport.\n"); | |
486 | } else | |
487 | die("Unknown response to connect: %s", | |
488 | cmdbuf.buf); | |
489 | ||
490 | exit: | |
491 | fclose(input); | |
492 | return ret; | |
493 | } | |
494 | ||
495 | static int process_connect(struct transport *transport, | |
496 | int for_push) | |
497 | { | |
498 | struct helper_data *data = transport->data; | |
499 | const char *name; | |
500 | const char *exec; | |
501 | ||
502 | name = for_push ? "git-receive-pack" : "git-upload-pack"; | |
503 | if (for_push) | |
504 | exec = data->transport_options.receivepack; | |
505 | else | |
506 | exec = data->transport_options.uploadpack; | |
507 | ||
508 | return process_connect_service(transport, name, exec); | |
509 | } | |
510 | ||
b236752a IL |
511 | static int connect_helper(struct transport *transport, const char *name, |
512 | const char *exec, int fd[2]) | |
513 | { | |
514 | struct helper_data *data = transport->data; | |
515 | ||
516 | /* Get_helper so connect is inited. */ | |
517 | get_helper(transport); | |
518 | if (!data->connect) | |
519 | die("Operation not supported by protocol."); | |
520 | ||
521 | if (!process_connect_service(transport, name, exec)) | |
522 | die("Can't connect to subservice %s.", name); | |
523 | ||
524 | fd[0] = data->helper->out; | |
525 | fd[1] = data->helper->in; | |
526 | return 0; | |
527 | } | |
528 | ||
6eb996b5 | 529 | static int fetch(struct transport *transport, |
37148311 | 530 | int nr_heads, struct ref **to_fetch) |
6eb996b5 DB |
531 | { |
532 | struct helper_data *data = transport->data; | |
533 | int i, count; | |
534 | ||
fa8c097c IL |
535 | if (process_connect(transport, 0)) { |
536 | do_take_over(transport); | |
537 | return transport->fetch(transport, nr_heads, to_fetch); | |
538 | } | |
539 | ||
6eb996b5 DB |
540 | count = 0; |
541 | for (i = 0; i < nr_heads; i++) | |
542 | if (!(to_fetch[i]->status & REF_STATUS_UPTODATE)) | |
543 | count++; | |
544 | ||
545 | if (!count) | |
546 | return 0; | |
547 | ||
548 | if (data->fetch) | |
549 | return fetch_with_fetch(transport, nr_heads, to_fetch); | |
550 | ||
e65e91ed DB |
551 | if (data->import) |
552 | return fetch_with_import(transport, nr_heads, to_fetch); | |
553 | ||
6eb996b5 DB |
554 | return -1; |
555 | } | |
556 | ||
73b49a75 | 557 | static int push_refs_with_push(struct transport *transport, |
ae4efe19 SP |
558 | struct ref *remote_refs, int flags) |
559 | { | |
560 | int force_all = flags & TRANSPORT_PUSH_FORCE; | |
561 | int mirror = flags & TRANSPORT_PUSH_MIRROR; | |
562 | struct helper_data *data = transport->data; | |
563 | struct strbuf buf = STRBUF_INIT; | |
ae4efe19 SP |
564 | struct ref *ref; |
565 | ||
c0aa335c | 566 | get_helper(transport); |
ae4efe19 SP |
567 | if (!data->push) |
568 | return 1; | |
569 | ||
570 | for (ref = remote_refs; ref; ref = ref->next) { | |
20e8b465 | 571 | if (!ref->peer_ref && !mirror) |
ae4efe19 SP |
572 | continue; |
573 | ||
20e8b465 TRC |
574 | /* Check for statuses set by set_ref_status_for_push() */ |
575 | switch (ref->status) { | |
576 | case REF_STATUS_REJECT_NONFASTFORWARD: | |
577 | case REF_STATUS_UPTODATE: | |
ae4efe19 | 578 | continue; |
20e8b465 TRC |
579 | default: |
580 | ; /* do nothing */ | |
ae4efe19 SP |
581 | } |
582 | ||
583 | if (force_all) | |
584 | ref->force = 1; | |
585 | ||
586 | strbuf_addstr(&buf, "push "); | |
587 | if (!ref->deletion) { | |
588 | if (ref->force) | |
589 | strbuf_addch(&buf, '+'); | |
590 | if (ref->peer_ref) | |
591 | strbuf_addstr(&buf, ref->peer_ref->name); | |
592 | else | |
593 | strbuf_addstr(&buf, sha1_to_hex(ref->new_sha1)); | |
594 | } | |
595 | strbuf_addch(&buf, ':'); | |
596 | strbuf_addstr(&buf, ref->name); | |
597 | strbuf_addch(&buf, '\n'); | |
598 | } | |
d8f67d20 CB |
599 | if (buf.len == 0) |
600 | return 0; | |
ae4efe19 | 601 | |
ae4efe19 SP |
602 | standard_options(transport); |
603 | ||
604 | if (flags & TRANSPORT_PUSH_DRY_RUN) { | |
605 | if (set_helper_option(transport, "dry-run", "true") != 0) | |
606 | die("helper %s does not support dry-run", data->name); | |
607 | } | |
608 | ||
609 | strbuf_addch(&buf, '\n'); | |
bf3c523c | 610 | sendline(data, &buf); |
ae4efe19 SP |
611 | |
612 | ref = remote_refs; | |
613 | while (1) { | |
614 | char *refname, *msg; | |
615 | int status; | |
616 | ||
bf3c523c | 617 | recvline(data, &buf); |
ae4efe19 SP |
618 | if (!buf.len) |
619 | break; | |
620 | ||
621 | if (!prefixcmp(buf.buf, "ok ")) { | |
622 | status = REF_STATUS_OK; | |
623 | refname = buf.buf + 3; | |
624 | } else if (!prefixcmp(buf.buf, "error ")) { | |
625 | status = REF_STATUS_REMOTE_REJECT; | |
626 | refname = buf.buf + 6; | |
627 | } else | |
628 | die("expected ok/error, helper said '%s'\n", buf.buf); | |
629 | ||
630 | msg = strchr(refname, ' '); | |
631 | if (msg) { | |
632 | struct strbuf msg_buf = STRBUF_INIT; | |
633 | const char *end; | |
634 | ||
635 | *msg++ = '\0'; | |
636 | if (!unquote_c_style(&msg_buf, msg, &end)) | |
637 | msg = strbuf_detach(&msg_buf, NULL); | |
638 | else | |
639 | msg = xstrdup(msg); | |
640 | strbuf_release(&msg_buf); | |
641 | ||
642 | if (!strcmp(msg, "no match")) { | |
643 | status = REF_STATUS_NONE; | |
644 | free(msg); | |
645 | msg = NULL; | |
646 | } | |
647 | else if (!strcmp(msg, "up to date")) { | |
648 | status = REF_STATUS_UPTODATE; | |
649 | free(msg); | |
650 | msg = NULL; | |
651 | } | |
652 | else if (!strcmp(msg, "non-fast forward")) { | |
653 | status = REF_STATUS_REJECT_NONFASTFORWARD; | |
654 | free(msg); | |
655 | msg = NULL; | |
656 | } | |
657 | } | |
658 | ||
659 | if (ref) | |
660 | ref = find_ref_by_name(ref, refname); | |
661 | if (!ref) | |
662 | ref = find_ref_by_name(remote_refs, refname); | |
663 | if (!ref) { | |
664 | warning("helper reported unexpected status of %s", refname); | |
665 | continue; | |
666 | } | |
667 | ||
08d63a42 TRC |
668 | if (ref->status != REF_STATUS_NONE) { |
669 | /* | |
670 | * Earlier, the ref was marked not to be pushed, so ignore the ref | |
671 | * status reported by the remote helper if the latter is 'no match'. | |
672 | */ | |
673 | if (status == REF_STATUS_NONE) | |
674 | continue; | |
675 | } | |
676 | ||
ae4efe19 SP |
677 | ref->status = status; |
678 | ref->remote_status = msg; | |
679 | } | |
680 | strbuf_release(&buf); | |
681 | return 0; | |
682 | } | |
683 | ||
73b49a75 SR |
684 | static int push_refs_with_export(struct transport *transport, |
685 | struct ref *remote_refs, int flags) | |
686 | { | |
687 | struct ref *ref; | |
688 | struct child_process *helper, exporter; | |
689 | struct helper_data *data = transport->data; | |
690 | char *export_marks = NULL, *import_marks = NULL; | |
183113a5 | 691 | struct string_list revlist_args = STRING_LIST_INIT_NODUP; |
73b49a75 SR |
692 | struct strbuf buf = STRBUF_INIT; |
693 | ||
694 | helper = get_helper(transport); | |
695 | ||
696 | write_constant(helper->in, "export\n"); | |
697 | ||
698 | recvline(data, &buf); | |
699 | if (debug) | |
700 | fprintf(stderr, "Debug: Got export_marks '%s'\n", buf.buf); | |
701 | if (buf.len) { | |
702 | struct strbuf arg = STRBUF_INIT; | |
703 | strbuf_addstr(&arg, "--export-marks="); | |
704 | strbuf_addbuf(&arg, &buf); | |
705 | export_marks = strbuf_detach(&arg, NULL); | |
706 | } | |
707 | ||
708 | recvline(data, &buf); | |
709 | if (debug) | |
710 | fprintf(stderr, "Debug: Got import_marks '%s'\n", buf.buf); | |
711 | if (buf.len) { | |
712 | struct strbuf arg = STRBUF_INIT; | |
713 | strbuf_addstr(&arg, "--import-marks="); | |
714 | strbuf_addbuf(&arg, &buf); | |
715 | import_marks = strbuf_detach(&arg, NULL); | |
716 | } | |
717 | ||
718 | strbuf_reset(&buf); | |
719 | ||
720 | for (ref = remote_refs; ref; ref = ref->next) { | |
721 | char *private; | |
722 | unsigned char sha1[20]; | |
723 | ||
724 | if (!data->refspecs) | |
725 | continue; | |
726 | private = apply_refspecs(data->refspecs, data->refspec_nr, ref->name); | |
727 | if (private && !get_sha1(private, sha1)) { | |
728 | strbuf_addf(&buf, "^%s", private); | |
1d2f80fa | 729 | string_list_append(&revlist_args, strbuf_detach(&buf, NULL)); |
73b49a75 SR |
730 | } |
731 | ||
1d2f80fa | 732 | string_list_append(&revlist_args, ref->name); |
73b49a75 SR |
733 | |
734 | } | |
735 | ||
736 | if (get_exporter(transport, &exporter, | |
737 | export_marks, import_marks, &revlist_args)) | |
738 | die("Couldn't run fast-export"); | |
739 | ||
740 | data->no_disconnect_req = 1; | |
741 | finish_command(&exporter); | |
742 | disconnect_helper(transport); | |
743 | return 0; | |
744 | } | |
745 | ||
746 | static int push_refs(struct transport *transport, | |
747 | struct ref *remote_refs, int flags) | |
748 | { | |
749 | struct helper_data *data = transport->data; | |
750 | ||
751 | if (process_connect(transport, 1)) { | |
752 | do_take_over(transport); | |
753 | return transport->push_refs(transport, remote_refs, flags); | |
754 | } | |
755 | ||
756 | if (!remote_refs) { | |
757 | fprintf(stderr, "No refs in common and none specified; doing nothing.\n" | |
758 | "Perhaps you should specify a branch such as 'master'.\n"); | |
759 | return 0; | |
760 | } | |
761 | ||
762 | if (data->push) | |
763 | return push_refs_with_push(transport, remote_refs, flags); | |
764 | ||
765 | if (data->export) | |
766 | return push_refs_with_export(transport, remote_refs, flags); | |
767 | ||
768 | return -1; | |
769 | } | |
770 | ||
771 | ||
f8ec9167 DB |
772 | static int has_attribute(const char *attrs, const char *attr) { |
773 | int len; | |
774 | if (!attrs) | |
775 | return 0; | |
776 | ||
777 | len = strlen(attr); | |
778 | for (;;) { | |
779 | const char *space = strchrnul(attrs, ' '); | |
780 | if (len == space - attrs && !strncmp(attrs, attr, len)) | |
781 | return 1; | |
782 | if (!*space) | |
783 | return 0; | |
784 | attrs = space + 1; | |
785 | } | |
786 | } | |
787 | ||
6eb996b5 DB |
788 | static struct ref *get_refs_list(struct transport *transport, int for_push) |
789 | { | |
292ce46b | 790 | struct helper_data *data = transport->data; |
6eb996b5 DB |
791 | struct child_process *helper; |
792 | struct ref *ret = NULL; | |
793 | struct ref **tail = &ret; | |
794 | struct ref *posn; | |
795 | struct strbuf buf = STRBUF_INIT; | |
6eb996b5 DB |
796 | |
797 | helper = get_helper(transport); | |
2d14d65c | 798 | |
fa8c097c IL |
799 | if (process_connect(transport, for_push)) { |
800 | do_take_over(transport); | |
801 | return transport->get_refs_list(transport, for_push); | |
802 | } | |
803 | ||
ae4efe19 SP |
804 | if (data->push && for_push) |
805 | write_str_in_full(helper->in, "list for-push\n"); | |
806 | else | |
807 | write_str_in_full(helper->in, "list\n"); | |
6eb996b5 | 808 | |
6eb996b5 DB |
809 | while (1) { |
810 | char *eov, *eon; | |
bf3c523c | 811 | recvline(data, &buf); |
6eb996b5 DB |
812 | |
813 | if (!*buf.buf) | |
814 | break; | |
815 | ||
816 | eov = strchr(buf.buf, ' '); | |
817 | if (!eov) | |
818 | die("Malformed response in ref list: %s", buf.buf); | |
819 | eon = strchr(eov + 1, ' '); | |
820 | *eov = '\0'; | |
821 | if (eon) | |
822 | *eon = '\0'; | |
823 | *tail = alloc_ref(eov + 1); | |
824 | if (buf.buf[0] == '@') | |
825 | (*tail)->symref = xstrdup(buf.buf + 1); | |
826 | else if (buf.buf[0] != '?') | |
827 | get_sha1_hex(buf.buf, (*tail)->old_sha1); | |
f8ec9167 DB |
828 | if (eon) { |
829 | if (has_attribute(eon + 1, "unchanged")) { | |
830 | (*tail)->status |= REF_STATUS_UPTODATE; | |
831 | read_ref((*tail)->name, (*tail)->old_sha1); | |
832 | } | |
833 | } | |
6eb996b5 DB |
834 | tail = &((*tail)->next); |
835 | } | |
bf3c523c IL |
836 | if (debug) |
837 | fprintf(stderr, "Debug: Read ref listing.\n"); | |
6eb996b5 DB |
838 | strbuf_release(&buf); |
839 | ||
840 | for (posn = ret; posn; posn = posn->next) | |
841 | resolve_remote_symref(posn, ret); | |
842 | ||
843 | return ret; | |
844 | } | |
845 | ||
c9e388bb | 846 | int transport_helper_init(struct transport *transport, const char *name) |
6eb996b5 DB |
847 | { |
848 | struct helper_data *data = xcalloc(sizeof(*data), 1); | |
c9e388bb | 849 | data->name = name; |
6eb996b5 | 850 | |
bf3c523c IL |
851 | if (getenv("GIT_TRANSPORT_HELPER_DEBUG")) |
852 | debug = 1; | |
853 | ||
6eb996b5 | 854 | transport->data = data; |
ef08ef9e | 855 | transport->set_option = set_helper_option; |
6eb996b5 DB |
856 | transport->get_refs_list = get_refs_list; |
857 | transport->fetch = fetch; | |
ae4efe19 | 858 | transport->push_refs = push_refs; |
f2a37151 | 859 | transport->disconnect = release_helper; |
b236752a | 860 | transport->connect = connect_helper; |
61b075bd | 861 | transport->smart_options = &(data->transport_options); |
6eb996b5 DB |
862 | return 0; |
863 | } | |
419f37db IL |
864 | |
865 | /* | |
866 | * Linux pipes can buffer 65536 bytes at once (and most platforms can | |
867 | * buffer less), so attempt reads and writes with up to that size. | |
868 | */ | |
869 | #define BUFFERSIZE 65536 | |
870 | /* This should be enough to hold debugging message. */ | |
871 | #define PBUFFERSIZE 8192 | |
872 | ||
873 | /* Print bidirectional transfer loop debug message. */ | |
874 | static void transfer_debug(const char *fmt, ...) | |
875 | { | |
876 | va_list args; | |
877 | char msgbuf[PBUFFERSIZE]; | |
878 | static int debug_enabled = -1; | |
879 | ||
880 | if (debug_enabled < 0) | |
881 | debug_enabled = getenv("GIT_TRANSLOOP_DEBUG") ? 1 : 0; | |
882 | if (!debug_enabled) | |
883 | return; | |
884 | ||
885 | va_start(args, fmt); | |
886 | vsnprintf(msgbuf, PBUFFERSIZE, fmt, args); | |
887 | va_end(args); | |
888 | fprintf(stderr, "Transfer loop debugging: %s\n", msgbuf); | |
889 | } | |
890 | ||
891 | /* Stream state: More data may be coming in this direction. */ | |
892 | #define SSTATE_TRANSFERING 0 | |
893 | /* | |
894 | * Stream state: No more data coming in this direction, flushing rest of | |
895 | * data. | |
896 | */ | |
897 | #define SSTATE_FLUSHING 1 | |
898 | /* Stream state: Transfer in this direction finished. */ | |
899 | #define SSTATE_FINISHED 2 | |
900 | ||
901 | #define STATE_NEEDS_READING(state) ((state) <= SSTATE_TRANSFERING) | |
902 | #define STATE_NEEDS_WRITING(state) ((state) <= SSTATE_FLUSHING) | |
903 | #define STATE_NEEDS_CLOSING(state) ((state) == SSTATE_FLUSHING) | |
904 | ||
905 | /* Unidirectional transfer. */ | |
906 | struct unidirectional_transfer { | |
907 | /* Source */ | |
908 | int src; | |
909 | /* Destination */ | |
910 | int dest; | |
911 | /* Is source socket? */ | |
912 | int src_is_sock; | |
913 | /* Is destination socket? */ | |
914 | int dest_is_sock; | |
915 | /* Transfer state (TRANSFERING/FLUSHING/FINISHED) */ | |
916 | int state; | |
917 | /* Buffer. */ | |
918 | char buf[BUFFERSIZE]; | |
919 | /* Buffer used. */ | |
920 | size_t bufuse; | |
921 | /* Name of source. */ | |
922 | const char *src_name; | |
923 | /* Name of destination. */ | |
924 | const char *dest_name; | |
925 | }; | |
926 | ||
927 | /* Closes the target (for writing) if transfer has finished. */ | |
928 | static void udt_close_if_finished(struct unidirectional_transfer *t) | |
929 | { | |
930 | if (STATE_NEEDS_CLOSING(t->state) && !t->bufuse) { | |
931 | t->state = SSTATE_FINISHED; | |
932 | if (t->dest_is_sock) | |
933 | shutdown(t->dest, SHUT_WR); | |
934 | else | |
935 | close(t->dest); | |
936 | transfer_debug("Closed %s.", t->dest_name); | |
937 | } | |
938 | } | |
939 | ||
940 | /* | |
941 | * Tries to read read data from source into buffer. If buffer is full, | |
942 | * no data is read. Returns 0 on success, -1 on error. | |
943 | */ | |
944 | static int udt_do_read(struct unidirectional_transfer *t) | |
945 | { | |
946 | ssize_t bytes; | |
947 | ||
948 | if (t->bufuse == BUFFERSIZE) | |
949 | return 0; /* No space for more. */ | |
950 | ||
951 | transfer_debug("%s is readable", t->src_name); | |
952 | bytes = read(t->src, t->buf + t->bufuse, BUFFERSIZE - t->bufuse); | |
953 | if (bytes < 0 && errno != EWOULDBLOCK && errno != EAGAIN && | |
954 | errno != EINTR) { | |
955 | error("read(%s) failed: %s", t->src_name, strerror(errno)); | |
956 | return -1; | |
957 | } else if (bytes == 0) { | |
958 | transfer_debug("%s EOF (with %i bytes in buffer)", | |
959 | t->src_name, t->bufuse); | |
960 | t->state = SSTATE_FLUSHING; | |
961 | } else if (bytes > 0) { | |
962 | t->bufuse += bytes; | |
963 | transfer_debug("Read %i bytes from %s (buffer now at %i)", | |
964 | (int)bytes, t->src_name, (int)t->bufuse); | |
965 | } | |
966 | return 0; | |
967 | } | |
968 | ||
969 | /* Tries to write data from buffer into destination. If buffer is empty, | |
970 | * no data is written. Returns 0 on success, -1 on error. | |
971 | */ | |
972 | static int udt_do_write(struct unidirectional_transfer *t) | |
973 | { | |
803dbdb9 | 974 | ssize_t bytes; |
419f37db IL |
975 | |
976 | if (t->bufuse == 0) | |
977 | return 0; /* Nothing to write. */ | |
978 | ||
979 | transfer_debug("%s is writable", t->dest_name); | |
980 | bytes = write(t->dest, t->buf, t->bufuse); | |
981 | if (bytes < 0 && errno != EWOULDBLOCK && errno != EAGAIN && | |
982 | errno != EINTR) { | |
983 | error("write(%s) failed: %s", t->dest_name, strerror(errno)); | |
984 | return -1; | |
985 | } else if (bytes > 0) { | |
986 | t->bufuse -= bytes; | |
987 | if (t->bufuse) | |
988 | memmove(t->buf, t->buf + bytes, t->bufuse); | |
989 | transfer_debug("Wrote %i bytes to %s (buffer now at %i)", | |
990 | (int)bytes, t->dest_name, (int)t->bufuse); | |
991 | } | |
992 | return 0; | |
993 | } | |
994 | ||
995 | ||
996 | /* State of bidirectional transfer loop. */ | |
997 | struct bidirectional_transfer_state { | |
998 | /* Direction from program to git. */ | |
999 | struct unidirectional_transfer ptg; | |
1000 | /* Direction from git to program. */ | |
1001 | struct unidirectional_transfer gtp; | |
1002 | }; | |
1003 | ||
1004 | static void *udt_copy_task_routine(void *udt) | |
1005 | { | |
1006 | struct unidirectional_transfer *t = (struct unidirectional_transfer *)udt; | |
1007 | while (t->state != SSTATE_FINISHED) { | |
1008 | if (STATE_NEEDS_READING(t->state)) | |
1009 | if (udt_do_read(t)) | |
1010 | return NULL; | |
1011 | if (STATE_NEEDS_WRITING(t->state)) | |
1012 | if (udt_do_write(t)) | |
1013 | return NULL; | |
1014 | if (STATE_NEEDS_CLOSING(t->state)) | |
1015 | udt_close_if_finished(t); | |
1016 | } | |
1017 | return udt; /* Just some non-NULL value. */ | |
1018 | } | |
1019 | ||
1020 | #ifndef NO_PTHREADS | |
1021 | ||
1022 | /* | |
1023 | * Join thread, with apporiate errors on failure. Name is name for the | |
1024 | * thread (for error messages). Returns 0 on success, 1 on failure. | |
1025 | */ | |
1026 | static int tloop_join(pthread_t thread, const char *name) | |
1027 | { | |
1028 | int err; | |
1029 | void *tret; | |
1030 | err = pthread_join(thread, &tret); | |
1031 | if (!tret) { | |
1032 | error("%s thread failed", name); | |
1033 | return 1; | |
1034 | } | |
1035 | if (err) { | |
1036 | error("%s thread failed to join: %s", name, strerror(err)); | |
1037 | return 1; | |
1038 | } | |
1039 | return 0; | |
1040 | } | |
1041 | ||
1042 | /* | |
1043 | * Spawn the transfer tasks and then wait for them. Returns 0 on success, | |
1044 | * -1 on failure. | |
1045 | */ | |
1046 | static int tloop_spawnwait_tasks(struct bidirectional_transfer_state *s) | |
1047 | { | |
1048 | pthread_t gtp_thread; | |
1049 | pthread_t ptg_thread; | |
1050 | int err; | |
1051 | int ret = 0; | |
1052 | err = pthread_create(>p_thread, NULL, udt_copy_task_routine, | |
1053 | &s->gtp); | |
1054 | if (err) | |
1055 | die("Can't start thread for copying data: %s", strerror(err)); | |
1056 | err = pthread_create(&ptg_thread, NULL, udt_copy_task_routine, | |
1057 | &s->ptg); | |
1058 | if (err) | |
1059 | die("Can't start thread for copying data: %s", strerror(err)); | |
1060 | ||
1061 | ret |= tloop_join(gtp_thread, "Git to program copy"); | |
1062 | ret |= tloop_join(ptg_thread, "Program to git copy"); | |
1063 | return ret; | |
1064 | } | |
1065 | #else | |
1066 | ||
1067 | /* Close the source and target (for writing) for transfer. */ | |
1068 | static void udt_kill_transfer(struct unidirectional_transfer *t) | |
1069 | { | |
1070 | t->state = SSTATE_FINISHED; | |
1071 | /* | |
1072 | * Socket read end left open isn't a disaster if nobody | |
1073 | * attempts to read from it (mingw compat headers do not | |
1074 | * have SHUT_RD)... | |
1075 | * | |
1076 | * We can't fully close the socket since otherwise gtp | |
1077 | * task would first close the socket it sends data to | |
1078 | * while closing the ptg file descriptors. | |
1079 | */ | |
1080 | if (!t->src_is_sock) | |
1081 | close(t->src); | |
1082 | if (t->dest_is_sock) | |
1083 | shutdown(t->dest, SHUT_WR); | |
1084 | else | |
1085 | close(t->dest); | |
1086 | } | |
1087 | ||
1088 | /* | |
1089 | * Join process, with apporiate errors on failure. Name is name for the | |
1090 | * process (for error messages). Returns 0 on success, 1 on failure. | |
1091 | */ | |
1092 | static int tloop_join(pid_t pid, const char *name) | |
1093 | { | |
1094 | int tret; | |
1095 | if (waitpid(pid, &tret, 0) < 0) { | |
1096 | error("%s process failed to wait: %s", name, strerror(errno)); | |
1097 | return 1; | |
1098 | } | |
1099 | if (!WIFEXITED(tret) || WEXITSTATUS(tret)) { | |
1100 | error("%s process failed", name); | |
1101 | return 1; | |
1102 | } | |
1103 | return 0; | |
1104 | } | |
1105 | ||
1106 | /* | |
1107 | * Spawn the transfer tasks and then wait for them. Returns 0 on success, | |
1108 | * -1 on failure. | |
1109 | */ | |
1110 | static int tloop_spawnwait_tasks(struct bidirectional_transfer_state *s) | |
1111 | { | |
1112 | pid_t pid1, pid2; | |
1113 | int ret = 0; | |
1114 | ||
1115 | /* Fork thread #1: git to program. */ | |
1116 | pid1 = fork(); | |
1117 | if (pid1 < 0) | |
1118 | die_errno("Can't start thread for copying data"); | |
1119 | else if (pid1 == 0) { | |
1120 | udt_kill_transfer(&s->ptg); | |
1121 | exit(udt_copy_task_routine(&s->gtp) ? 0 : 1); | |
1122 | } | |
1123 | ||
1124 | /* Fork thread #2: program to git. */ | |
1125 | pid2 = fork(); | |
1126 | if (pid2 < 0) | |
1127 | die_errno("Can't start thread for copying data"); | |
1128 | else if (pid2 == 0) { | |
1129 | udt_kill_transfer(&s->gtp); | |
1130 | exit(udt_copy_task_routine(&s->ptg) ? 0 : 1); | |
1131 | } | |
1132 | ||
1133 | /* | |
1134 | * Close both streams in parent as to not interfere with | |
1135 | * end of file detection and wait for both tasks to finish. | |
1136 | */ | |
1137 | udt_kill_transfer(&s->gtp); | |
1138 | udt_kill_transfer(&s->ptg); | |
1139 | ret |= tloop_join(pid1, "Git to program copy"); | |
1140 | ret |= tloop_join(pid2, "Program to git copy"); | |
1141 | return ret; | |
1142 | } | |
1143 | #endif | |
1144 | ||
1145 | /* | |
1146 | * Copies data from stdin to output and from input to stdout simultaneously. | |
1147 | * Additionally filtering through given filter. If filter is NULL, uses | |
1148 | * identity filter. | |
1149 | */ | |
1150 | int bidirectional_transfer_loop(int input, int output) | |
1151 | { | |
1152 | struct bidirectional_transfer_state state; | |
1153 | ||
1154 | /* Fill the state fields. */ | |
1155 | state.ptg.src = input; | |
1156 | state.ptg.dest = 1; | |
1157 | state.ptg.src_is_sock = (input == output); | |
1158 | state.ptg.dest_is_sock = 0; | |
1159 | state.ptg.state = SSTATE_TRANSFERING; | |
1160 | state.ptg.bufuse = 0; | |
1161 | state.ptg.src_name = "remote input"; | |
1162 | state.ptg.dest_name = "stdout"; | |
1163 | ||
1164 | state.gtp.src = 0; | |
1165 | state.gtp.dest = output; | |
1166 | state.gtp.src_is_sock = 0; | |
1167 | state.gtp.dest_is_sock = (input == output); | |
1168 | state.gtp.state = SSTATE_TRANSFERING; | |
1169 | state.gtp.bufuse = 0; | |
1170 | state.gtp.src_name = "stdin"; | |
1171 | state.gtp.dest_name = "remote output"; | |
1172 | ||
1173 | return tloop_spawnwait_tasks(&state); | |
1174 | } |