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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 | ||
6eb996b5 DB |
15 | struct helper_data |
16 | { | |
17 | const char *name; | |
18 | struct child_process *helper; | |
292ce46b | 19 | FILE *out; |
ef08ef9e | 20 | unsigned fetch : 1, |
a24a32dd | 21 | import : 1, |
73b49a75 | 22 | export : 1, |
ae4efe19 | 23 | option : 1, |
fa8c097c IL |
24 | push : 1, |
25 | connect : 1, | |
26 | no_disconnect_req : 1; | |
72ff8943 DB |
27 | /* These go from remote name (as in "list") to private name */ |
28 | struct refspec *refspecs; | |
29 | int refspec_nr; | |
61b075bd IL |
30 | /* Transport options for fetch-pack/send-pack (should one of |
31 | * those be invoked). | |
32 | */ | |
33 | struct git_transport_options transport_options; | |
6eb996b5 DB |
34 | }; |
35 | ||
bf3c523c IL |
36 | static void sendline(struct helper_data *helper, struct strbuf *buffer) |
37 | { | |
38 | if (debug) | |
39 | fprintf(stderr, "Debug: Remote helper: -> %s", buffer->buf); | |
40 | if (write_in_full(helper->helper->in, buffer->buf, buffer->len) | |
41 | != buffer->len) | |
42 | die_errno("Full write to remote helper failed"); | |
43 | } | |
44 | ||
fa8c097c | 45 | static int recvline_fh(FILE *helper, struct strbuf *buffer) |
bf3c523c IL |
46 | { |
47 | strbuf_reset(buffer); | |
48 | if (debug) | |
49 | fprintf(stderr, "Debug: Remote helper: Waiting...\n"); | |
fa8c097c | 50 | if (strbuf_getline(buffer, helper, '\n') == EOF) { |
bf3c523c IL |
51 | if (debug) |
52 | fprintf(stderr, "Debug: Remote helper quit.\n"); | |
53 | exit(128); | |
54 | } | |
55 | ||
56 | if (debug) | |
57 | fprintf(stderr, "Debug: Remote helper: <- %s\n", buffer->buf); | |
58 | return 0; | |
59 | } | |
60 | ||
fa8c097c IL |
61 | static int recvline(struct helper_data *helper, struct strbuf *buffer) |
62 | { | |
63 | return recvline_fh(helper->out, buffer); | |
64 | } | |
65 | ||
bf3c523c IL |
66 | static void xchgline(struct helper_data *helper, struct strbuf *buffer) |
67 | { | |
68 | sendline(helper, buffer); | |
69 | recvline(helper, buffer); | |
70 | } | |
71 | ||
72 | static void write_constant(int fd, const char *str) | |
73 | { | |
74 | if (debug) | |
75 | fprintf(stderr, "Debug: Remote helper: -> %s", str); | |
76 | if (write_in_full(fd, str, strlen(str)) != strlen(str)) | |
77 | die_errno("Full write to remote helper failed"); | |
78 | } | |
79 | ||
25d5cc48 IL |
80 | const char *remove_ext_force(const char *url) |
81 | { | |
82 | if (url) { | |
83 | const char *colon = strchr(url, ':'); | |
84 | if (colon && colon[1] == ':') | |
85 | return colon + 2; | |
86 | } | |
87 | return url; | |
88 | } | |
89 | ||
fa8c097c IL |
90 | static void do_take_over(struct transport *transport) |
91 | { | |
92 | struct helper_data *data; | |
93 | data = (struct helper_data *)transport->data; | |
94 | transport_take_over(transport, data->helper); | |
95 | fclose(data->out); | |
96 | free(data); | |
97 | } | |
98 | ||
6eb996b5 DB |
99 | static struct child_process *get_helper(struct transport *transport) |
100 | { | |
101 | struct helper_data *data = transport->data; | |
102 | struct strbuf buf = STRBUF_INIT; | |
103 | struct child_process *helper; | |
72ff8943 DB |
104 | const char **refspecs = NULL; |
105 | int refspec_nr = 0; | |
106 | int refspec_alloc = 0; | |
61b075bd | 107 | int duped; |
6b02de3b | 108 | int code; |
6eb996b5 DB |
109 | |
110 | if (data->helper) | |
111 | return data->helper; | |
112 | ||
113 | helper = xcalloc(1, sizeof(*helper)); | |
114 | helper->in = -1; | |
115 | helper->out = -1; | |
116 | helper->err = 0; | |
117 | helper->argv = xcalloc(4, sizeof(*helper->argv)); | |
6b02de3b | 118 | strbuf_addf(&buf, "git-remote-%s", data->name); |
6eb996b5 DB |
119 | helper->argv[0] = strbuf_detach(&buf, NULL); |
120 | helper->argv[1] = transport->remote->name; | |
25d5cc48 | 121 | helper->argv[2] = remove_ext_force(transport->url); |
6b02de3b IL |
122 | helper->git_cmd = 0; |
123 | helper->silent_exec_failure = 1; | |
124 | code = start_command(helper); | |
125 | if (code < 0 && errno == ENOENT) | |
126 | die("Unable to find remote helper for '%s'", data->name); | |
127 | else if (code != 0) | |
128 | exit(code); | |
129 | ||
6eb996b5 | 130 | data->helper = helper; |
fa8c097c | 131 | data->no_disconnect_req = 0; |
6eb996b5 | 132 | |
61b075bd IL |
133 | /* |
134 | * Open the output as FILE* so strbuf_getline() can be used. | |
135 | * Do this with duped fd because fclose() will close the fd, | |
136 | * and stuff like taking over will require the fd to remain. | |
61b075bd IL |
137 | */ |
138 | duped = dup(helper->out); | |
139 | if (duped < 0) | |
140 | die_errno("Can't dup helper output fd"); | |
141 | data->out = xfdopen(duped, "r"); | |
142 | ||
bf3c523c | 143 | write_constant(helper->in, "capabilities\n"); |
2d14d65c | 144 | |
6eb996b5 | 145 | while (1) { |
28ed5b35 IL |
146 | const char *capname; |
147 | int mandatory = 0; | |
bf3c523c | 148 | recvline(data, &buf); |
6eb996b5 DB |
149 | |
150 | if (!*buf.buf) | |
151 | break; | |
28ed5b35 IL |
152 | |
153 | if (*buf.buf == '*') { | |
154 | capname = buf.buf + 1; | |
155 | mandatory = 1; | |
156 | } else | |
157 | capname = buf.buf; | |
158 | ||
bf3c523c | 159 | if (debug) |
28ed5b35 IL |
160 | fprintf(stderr, "Debug: Got cap %s\n", capname); |
161 | if (!strcmp(capname, "fetch")) | |
6eb996b5 | 162 | data->fetch = 1; |
28ed5b35 | 163 | else if (!strcmp(capname, "option")) |
ef08ef9e | 164 | data->option = 1; |
28ed5b35 | 165 | else if (!strcmp(capname, "push")) |
ae4efe19 | 166 | data->push = 1; |
28ed5b35 | 167 | else if (!strcmp(capname, "import")) |
e65e91ed | 168 | data->import = 1; |
73b49a75 SR |
169 | else if (!strcmp(capname, "export")) |
170 | data->export = 1; | |
28ed5b35 | 171 | else if (!data->refspecs && !prefixcmp(capname, "refspec ")) { |
72ff8943 DB |
172 | ALLOC_GROW(refspecs, |
173 | refspec_nr + 1, | |
174 | refspec_alloc); | |
175 | refspecs[refspec_nr++] = strdup(buf.buf + strlen("refspec ")); | |
fa8c097c IL |
176 | } else if (!strcmp(capname, "connect")) { |
177 | data->connect = 1; | |
88f3b2b0 SR |
178 | } else if (!strcmp(buf.buf, "gitdir")) { |
179 | struct strbuf gitdir = STRBUF_INIT; | |
180 | strbuf_addf(&gitdir, "gitdir %s\n", get_git_dir()); | |
181 | sendline(data, &gitdir); | |
182 | strbuf_release(&gitdir); | |
28ed5b35 | 183 | } else if (mandatory) { |
9517e6b8 | 184 | die("Unknown mandatory capability %s. This remote " |
28ed5b35 IL |
185 | "helper probably needs newer version of Git.\n", |
186 | capname); | |
72ff8943 DB |
187 | } |
188 | } | |
189 | if (refspecs) { | |
190 | int i; | |
191 | data->refspec_nr = refspec_nr; | |
192 | data->refspecs = parse_fetch_refspec(refspec_nr, refspecs); | |
193 | for (i = 0; i < refspec_nr; i++) { | |
194 | free((char *)refspecs[i]); | |
195 | } | |
196 | free(refspecs); | |
6eb996b5 | 197 | } |
b962dbdc | 198 | strbuf_release(&buf); |
bf3c523c IL |
199 | if (debug) |
200 | fprintf(stderr, "Debug: Capabilities complete.\n"); | |
6eb996b5 DB |
201 | return data->helper; |
202 | } | |
203 | ||
204 | static int disconnect_helper(struct transport *transport) | |
205 | { | |
206 | struct helper_data *data = transport->data; | |
bf3c523c IL |
207 | struct strbuf buf = STRBUF_INIT; |
208 | ||
6eb996b5 | 209 | if (data->helper) { |
bf3c523c IL |
210 | if (debug) |
211 | fprintf(stderr, "Debug: Disconnecting.\n"); | |
fa8c097c IL |
212 | if (!data->no_disconnect_req) { |
213 | strbuf_addf(&buf, "\n"); | |
214 | sendline(data, &buf); | |
215 | } | |
6eb996b5 | 216 | close(data->helper->in); |
61b075bd | 217 | close(data->helper->out); |
292ce46b | 218 | fclose(data->out); |
6eb996b5 DB |
219 | finish_command(data->helper); |
220 | free((char *)data->helper->argv[0]); | |
221 | free(data->helper->argv); | |
222 | free(data->helper); | |
223 | data->helper = NULL; | |
224 | } | |
225 | return 0; | |
226 | } | |
227 | ||
ef08ef9e SP |
228 | static const char *unsupported_options[] = { |
229 | TRANS_OPT_UPLOADPACK, | |
230 | TRANS_OPT_RECEIVEPACK, | |
231 | TRANS_OPT_THIN, | |
232 | TRANS_OPT_KEEP | |
233 | }; | |
234 | static const char *boolean_options[] = { | |
235 | TRANS_OPT_THIN, | |
236 | TRANS_OPT_KEEP, | |
237 | TRANS_OPT_FOLLOWTAGS | |
238 | }; | |
239 | ||
240 | static int set_helper_option(struct transport *transport, | |
241 | const char *name, const char *value) | |
242 | { | |
243 | struct helper_data *data = transport->data; | |
ef08ef9e SP |
244 | struct strbuf buf = STRBUF_INIT; |
245 | int i, ret, is_bool = 0; | |
246 | ||
bf3c523c IL |
247 | get_helper(transport); |
248 | ||
ef08ef9e SP |
249 | if (!data->option) |
250 | return 1; | |
251 | ||
252 | for (i = 0; i < ARRAY_SIZE(unsupported_options); i++) { | |
253 | if (!strcmp(name, unsupported_options[i])) | |
254 | return 1; | |
255 | } | |
256 | ||
257 | for (i = 0; i < ARRAY_SIZE(boolean_options); i++) { | |
258 | if (!strcmp(name, boolean_options[i])) { | |
259 | is_bool = 1; | |
260 | break; | |
261 | } | |
262 | } | |
263 | ||
264 | strbuf_addf(&buf, "option %s ", name); | |
265 | if (is_bool) | |
266 | strbuf_addstr(&buf, value ? "true" : "false"); | |
267 | else | |
268 | quote_c_style(value, &buf, NULL, 0); | |
269 | strbuf_addch(&buf, '\n'); | |
270 | ||
bf3c523c | 271 | xchgline(data, &buf); |
ef08ef9e SP |
272 | |
273 | if (!strcmp(buf.buf, "ok")) | |
274 | ret = 0; | |
275 | else if (!prefixcmp(buf.buf, "error")) { | |
276 | ret = -1; | |
277 | } else if (!strcmp(buf.buf, "unsupported")) | |
278 | ret = 1; | |
279 | else { | |
280 | warning("%s unexpectedly said: '%s'", data->name, buf.buf); | |
281 | ret = 1; | |
282 | } | |
283 | strbuf_release(&buf); | |
284 | return ret; | |
285 | } | |
286 | ||
287 | static void standard_options(struct transport *t) | |
288 | { | |
289 | char buf[16]; | |
290 | int n; | |
291 | int v = t->verbose; | |
ef08ef9e | 292 | |
d01b3c02 | 293 | set_helper_option(t, "progress", t->progress ? "true" : "false"); |
ef08ef9e SP |
294 | |
295 | n = snprintf(buf, sizeof(buf), "%d", v + 1); | |
296 | if (n >= sizeof(buf)) | |
297 | die("impossibly large verbosity value"); | |
298 | set_helper_option(t, "verbosity", buf); | |
299 | } | |
300 | ||
f2a37151 DB |
301 | static int release_helper(struct transport *transport) |
302 | { | |
72ff8943 DB |
303 | struct helper_data *data = transport->data; |
304 | free_refspec(data->refspec_nr, data->refspecs); | |
305 | data->refspecs = NULL; | |
f2a37151 DB |
306 | disconnect_helper(transport); |
307 | free(transport->data); | |
308 | return 0; | |
309 | } | |
310 | ||
6eb996b5 | 311 | static int fetch_with_fetch(struct transport *transport, |
37148311 | 312 | int nr_heads, struct ref **to_fetch) |
6eb996b5 | 313 | { |
292ce46b | 314 | struct helper_data *data = transport->data; |
6eb996b5 DB |
315 | int i; |
316 | struct strbuf buf = STRBUF_INIT; | |
317 | ||
ef08ef9e SP |
318 | standard_options(transport); |
319 | ||
6eb996b5 | 320 | for (i = 0; i < nr_heads; i++) { |
1088261f | 321 | const struct ref *posn = to_fetch[i]; |
6eb996b5 DB |
322 | if (posn->status & REF_STATUS_UPTODATE) |
323 | continue; | |
2d14d65c DB |
324 | |
325 | strbuf_addf(&buf, "fetch %s %s\n", | |
326 | sha1_to_hex(posn->old_sha1), posn->name); | |
292ce46b | 327 | } |
2d14d65c | 328 | |
292ce46b | 329 | strbuf_addch(&buf, '\n'); |
bf3c523c | 330 | sendline(data, &buf); |
292ce46b SP |
331 | |
332 | while (1) { | |
bf3c523c | 333 | recvline(data, &buf); |
292ce46b SP |
334 | |
335 | if (!prefixcmp(buf.buf, "lock ")) { | |
336 | const char *name = buf.buf + 5; | |
337 | if (transport->pack_lockfile) | |
338 | warning("%s also locked %s", data->name, name); | |
339 | else | |
340 | transport->pack_lockfile = xstrdup(name); | |
341 | } | |
342 | else if (!buf.len) | |
343 | break; | |
344 | else | |
345 | warning("%s unexpectedly said: '%s'", data->name, buf.buf); | |
6eb996b5 | 346 | } |
292ce46b | 347 | strbuf_release(&buf); |
6eb996b5 DB |
348 | return 0; |
349 | } | |
350 | ||
e65e91ed DB |
351 | static int get_importer(struct transport *transport, struct child_process *fastimport) |
352 | { | |
353 | struct child_process *helper = get_helper(transport); | |
354 | memset(fastimport, 0, sizeof(*fastimport)); | |
355 | fastimport->in = helper->out; | |
356 | fastimport->argv = xcalloc(5, sizeof(*fastimport->argv)); | |
357 | fastimport->argv[0] = "fast-import"; | |
358 | fastimport->argv[1] = "--quiet"; | |
359 | ||
360 | fastimport->git_cmd = 1; | |
361 | return start_command(fastimport); | |
362 | } | |
363 | ||
73b49a75 SR |
364 | static int get_exporter(struct transport *transport, |
365 | struct child_process *fastexport, | |
366 | const char *export_marks, | |
367 | const char *import_marks, | |
368 | struct string_list *revlist_args) | |
369 | { | |
370 | struct child_process *helper = get_helper(transport); | |
371 | int argc = 0, i; | |
372 | memset(fastexport, 0, sizeof(*fastexport)); | |
373 | ||
374 | /* we need to duplicate helper->in because we want to use it after | |
375 | * fastexport is done with it. */ | |
376 | fastexport->out = dup(helper->in); | |
377 | fastexport->argv = xcalloc(4 + revlist_args->nr, sizeof(*fastexport->argv)); | |
378 | fastexport->argv[argc++] = "fast-export"; | |
379 | if (export_marks) | |
380 | fastexport->argv[argc++] = export_marks; | |
381 | if (import_marks) | |
382 | fastexport->argv[argc++] = import_marks; | |
383 | ||
384 | for (i = 0; i < revlist_args->nr; i++) | |
385 | fastexport->argv[argc++] = revlist_args->items[i].string; | |
386 | ||
387 | fastexport->git_cmd = 1; | |
388 | return start_command(fastexport); | |
389 | } | |
390 | ||
e65e91ed DB |
391 | static int fetch_with_import(struct transport *transport, |
392 | int nr_heads, struct ref **to_fetch) | |
393 | { | |
394 | struct child_process fastimport; | |
72ff8943 | 395 | struct helper_data *data = transport->data; |
e65e91ed DB |
396 | int i; |
397 | struct ref *posn; | |
398 | struct strbuf buf = STRBUF_INIT; | |
399 | ||
bf3c523c IL |
400 | get_helper(transport); |
401 | ||
e65e91ed DB |
402 | if (get_importer(transport, &fastimport)) |
403 | die("Couldn't run fast-import"); | |
404 | ||
405 | for (i = 0; i < nr_heads; i++) { | |
406 | posn = to_fetch[i]; | |
407 | if (posn->status & REF_STATUS_UPTODATE) | |
408 | continue; | |
409 | ||
410 | strbuf_addf(&buf, "import %s\n", posn->name); | |
bf3c523c | 411 | sendline(data, &buf); |
e65e91ed DB |
412 | strbuf_reset(&buf); |
413 | } | |
414 | disconnect_helper(transport); | |
415 | finish_command(&fastimport); | |
b962dbdc SR |
416 | free(fastimport.argv); |
417 | fastimport.argv = NULL; | |
e65e91ed DB |
418 | |
419 | for (i = 0; i < nr_heads; i++) { | |
72ff8943 | 420 | char *private; |
e65e91ed DB |
421 | posn = to_fetch[i]; |
422 | if (posn->status & REF_STATUS_UPTODATE) | |
423 | continue; | |
72ff8943 DB |
424 | if (data->refspecs) |
425 | private = apply_refspecs(data->refspecs, data->refspec_nr, posn->name); | |
426 | else | |
427 | private = strdup(posn->name); | |
428 | read_ref(private, posn->old_sha1); | |
429 | free(private); | |
e65e91ed | 430 | } |
b962dbdc | 431 | strbuf_release(&buf); |
e65e91ed DB |
432 | return 0; |
433 | } | |
434 | ||
fa8c097c IL |
435 | static int process_connect_service(struct transport *transport, |
436 | const char *name, const char *exec) | |
437 | { | |
438 | struct helper_data *data = transport->data; | |
439 | struct strbuf cmdbuf = STRBUF_INIT; | |
440 | struct child_process *helper; | |
441 | int r, duped, ret = 0; | |
442 | FILE *input; | |
443 | ||
444 | helper = get_helper(transport); | |
445 | ||
446 | /* | |
447 | * Yes, dup the pipe another time, as we need unbuffered version | |
448 | * of input pipe as FILE*. fclose() closes the underlying fd and | |
449 | * stream buffering only can be changed before first I/O operation | |
450 | * on it. | |
451 | */ | |
452 | duped = dup(helper->out); | |
453 | if (duped < 0) | |
454 | die_errno("Can't dup helper output fd"); | |
455 | input = xfdopen(duped, "r"); | |
456 | setvbuf(input, NULL, _IONBF, 0); | |
457 | ||
458 | /* | |
459 | * Handle --upload-pack and friends. This is fire and forget... | |
460 | * just warn if it fails. | |
461 | */ | |
462 | if (strcmp(name, exec)) { | |
463 | r = set_helper_option(transport, "servpath", exec); | |
464 | if (r > 0) | |
465 | warning("Setting remote service path not supported by protocol."); | |
466 | else if (r < 0) | |
467 | warning("Invalid remote service path."); | |
468 | } | |
469 | ||
470 | if (data->connect) | |
471 | strbuf_addf(&cmdbuf, "connect %s\n", name); | |
472 | else | |
473 | goto exit; | |
474 | ||
475 | sendline(data, &cmdbuf); | |
476 | recvline_fh(input, &cmdbuf); | |
477 | if (!strcmp(cmdbuf.buf, "")) { | |
478 | data->no_disconnect_req = 1; | |
479 | if (debug) | |
480 | fprintf(stderr, "Debug: Smart transport connection " | |
481 | "ready.\n"); | |
482 | ret = 1; | |
483 | } else if (!strcmp(cmdbuf.buf, "fallback")) { | |
484 | if (debug) | |
485 | fprintf(stderr, "Debug: Falling back to dumb " | |
486 | "transport.\n"); | |
487 | } else | |
488 | die("Unknown response to connect: %s", | |
489 | cmdbuf.buf); | |
490 | ||
491 | exit: | |
492 | fclose(input); | |
493 | return ret; | |
494 | } | |
495 | ||
496 | static int process_connect(struct transport *transport, | |
497 | int for_push) | |
498 | { | |
499 | struct helper_data *data = transport->data; | |
500 | const char *name; | |
501 | const char *exec; | |
502 | ||
503 | name = for_push ? "git-receive-pack" : "git-upload-pack"; | |
504 | if (for_push) | |
505 | exec = data->transport_options.receivepack; | |
506 | else | |
507 | exec = data->transport_options.uploadpack; | |
508 | ||
509 | return process_connect_service(transport, name, exec); | |
510 | } | |
511 | ||
b236752a IL |
512 | static int connect_helper(struct transport *transport, const char *name, |
513 | const char *exec, int fd[2]) | |
514 | { | |
515 | struct helper_data *data = transport->data; | |
516 | ||
517 | /* Get_helper so connect is inited. */ | |
518 | get_helper(transport); | |
519 | if (!data->connect) | |
520 | die("Operation not supported by protocol."); | |
521 | ||
522 | if (!process_connect_service(transport, name, exec)) | |
523 | die("Can't connect to subservice %s.", name); | |
524 | ||
525 | fd[0] = data->helper->out; | |
526 | fd[1] = data->helper->in; | |
527 | return 0; | |
528 | } | |
529 | ||
6eb996b5 | 530 | static int fetch(struct transport *transport, |
37148311 | 531 | int nr_heads, struct ref **to_fetch) |
6eb996b5 DB |
532 | { |
533 | struct helper_data *data = transport->data; | |
534 | int i, count; | |
535 | ||
fa8c097c IL |
536 | if (process_connect(transport, 0)) { |
537 | do_take_over(transport); | |
538 | return transport->fetch(transport, nr_heads, to_fetch); | |
539 | } | |
540 | ||
6eb996b5 DB |
541 | count = 0; |
542 | for (i = 0; i < nr_heads; i++) | |
543 | if (!(to_fetch[i]->status & REF_STATUS_UPTODATE)) | |
544 | count++; | |
545 | ||
546 | if (!count) | |
547 | return 0; | |
548 | ||
549 | if (data->fetch) | |
550 | return fetch_with_fetch(transport, nr_heads, to_fetch); | |
551 | ||
e65e91ed DB |
552 | if (data->import) |
553 | return fetch_with_import(transport, nr_heads, to_fetch); | |
554 | ||
6eb996b5 DB |
555 | return -1; |
556 | } | |
557 | ||
73b49a75 | 558 | static int push_refs_with_push(struct transport *transport, |
ae4efe19 SP |
559 | struct ref *remote_refs, int flags) |
560 | { | |
561 | int force_all = flags & TRANSPORT_PUSH_FORCE; | |
562 | int mirror = flags & TRANSPORT_PUSH_MIRROR; | |
563 | struct helper_data *data = transport->data; | |
564 | struct strbuf buf = STRBUF_INIT; | |
565 | struct child_process *helper; | |
566 | struct ref *ref; | |
567 | ||
ae4efe19 SP |
568 | helper = get_helper(transport); |
569 | if (!data->push) | |
570 | return 1; | |
571 | ||
572 | for (ref = remote_refs; ref; ref = ref->next) { | |
20e8b465 | 573 | if (!ref->peer_ref && !mirror) |
ae4efe19 SP |
574 | continue; |
575 | ||
20e8b465 TRC |
576 | /* Check for statuses set by set_ref_status_for_push() */ |
577 | switch (ref->status) { | |
578 | case REF_STATUS_REJECT_NONFASTFORWARD: | |
579 | case REF_STATUS_UPTODATE: | |
ae4efe19 | 580 | continue; |
20e8b465 TRC |
581 | default: |
582 | ; /* do nothing */ | |
ae4efe19 SP |
583 | } |
584 | ||
585 | if (force_all) | |
586 | ref->force = 1; | |
587 | ||
588 | strbuf_addstr(&buf, "push "); | |
589 | if (!ref->deletion) { | |
590 | if (ref->force) | |
591 | strbuf_addch(&buf, '+'); | |
592 | if (ref->peer_ref) | |
593 | strbuf_addstr(&buf, ref->peer_ref->name); | |
594 | else | |
595 | strbuf_addstr(&buf, sha1_to_hex(ref->new_sha1)); | |
596 | } | |
597 | strbuf_addch(&buf, ':'); | |
598 | strbuf_addstr(&buf, ref->name); | |
599 | strbuf_addch(&buf, '\n'); | |
600 | } | |
d8f67d20 CB |
601 | if (buf.len == 0) |
602 | return 0; | |
ae4efe19 | 603 | |
ae4efe19 SP |
604 | standard_options(transport); |
605 | ||
606 | if (flags & TRANSPORT_PUSH_DRY_RUN) { | |
607 | if (set_helper_option(transport, "dry-run", "true") != 0) | |
608 | die("helper %s does not support dry-run", data->name); | |
609 | } | |
610 | ||
611 | strbuf_addch(&buf, '\n'); | |
bf3c523c | 612 | sendline(data, &buf); |
ae4efe19 SP |
613 | |
614 | ref = remote_refs; | |
615 | while (1) { | |
616 | char *refname, *msg; | |
617 | int status; | |
618 | ||
bf3c523c | 619 | recvline(data, &buf); |
ae4efe19 SP |
620 | if (!buf.len) |
621 | break; | |
622 | ||
623 | if (!prefixcmp(buf.buf, "ok ")) { | |
624 | status = REF_STATUS_OK; | |
625 | refname = buf.buf + 3; | |
626 | } else if (!prefixcmp(buf.buf, "error ")) { | |
627 | status = REF_STATUS_REMOTE_REJECT; | |
628 | refname = buf.buf + 6; | |
629 | } else | |
630 | die("expected ok/error, helper said '%s'\n", buf.buf); | |
631 | ||
632 | msg = strchr(refname, ' '); | |
633 | if (msg) { | |
634 | struct strbuf msg_buf = STRBUF_INIT; | |
635 | const char *end; | |
636 | ||
637 | *msg++ = '\0'; | |
638 | if (!unquote_c_style(&msg_buf, msg, &end)) | |
639 | msg = strbuf_detach(&msg_buf, NULL); | |
640 | else | |
641 | msg = xstrdup(msg); | |
642 | strbuf_release(&msg_buf); | |
643 | ||
644 | if (!strcmp(msg, "no match")) { | |
645 | status = REF_STATUS_NONE; | |
646 | free(msg); | |
647 | msg = NULL; | |
648 | } | |
649 | else if (!strcmp(msg, "up to date")) { | |
650 | status = REF_STATUS_UPTODATE; | |
651 | free(msg); | |
652 | msg = NULL; | |
653 | } | |
654 | else if (!strcmp(msg, "non-fast forward")) { | |
655 | status = REF_STATUS_REJECT_NONFASTFORWARD; | |
656 | free(msg); | |
657 | msg = NULL; | |
658 | } | |
659 | } | |
660 | ||
661 | if (ref) | |
662 | ref = find_ref_by_name(ref, refname); | |
663 | if (!ref) | |
664 | ref = find_ref_by_name(remote_refs, refname); | |
665 | if (!ref) { | |
666 | warning("helper reported unexpected status of %s", refname); | |
667 | continue; | |
668 | } | |
669 | ||
08d63a42 TRC |
670 | if (ref->status != REF_STATUS_NONE) { |
671 | /* | |
672 | * Earlier, the ref was marked not to be pushed, so ignore the ref | |
673 | * status reported by the remote helper if the latter is 'no match'. | |
674 | */ | |
675 | if (status == REF_STATUS_NONE) | |
676 | continue; | |
677 | } | |
678 | ||
ae4efe19 SP |
679 | ref->status = status; |
680 | ref->remote_status = msg; | |
681 | } | |
682 | strbuf_release(&buf); | |
683 | return 0; | |
684 | } | |
685 | ||
73b49a75 SR |
686 | static int push_refs_with_export(struct transport *transport, |
687 | struct ref *remote_refs, int flags) | |
688 | { | |
689 | struct ref *ref; | |
690 | struct child_process *helper, exporter; | |
691 | struct helper_data *data = transport->data; | |
692 | char *export_marks = NULL, *import_marks = NULL; | |
183113a5 | 693 | struct string_list revlist_args = STRING_LIST_INIT_NODUP; |
73b49a75 SR |
694 | struct strbuf buf = STRBUF_INIT; |
695 | ||
696 | helper = get_helper(transport); | |
697 | ||
698 | write_constant(helper->in, "export\n"); | |
699 | ||
700 | recvline(data, &buf); | |
701 | if (debug) | |
702 | fprintf(stderr, "Debug: Got export_marks '%s'\n", buf.buf); | |
703 | if (buf.len) { | |
704 | struct strbuf arg = STRBUF_INIT; | |
705 | strbuf_addstr(&arg, "--export-marks="); | |
706 | strbuf_addbuf(&arg, &buf); | |
707 | export_marks = strbuf_detach(&arg, NULL); | |
708 | } | |
709 | ||
710 | recvline(data, &buf); | |
711 | if (debug) | |
712 | fprintf(stderr, "Debug: Got import_marks '%s'\n", buf.buf); | |
713 | if (buf.len) { | |
714 | struct strbuf arg = STRBUF_INIT; | |
715 | strbuf_addstr(&arg, "--import-marks="); | |
716 | strbuf_addbuf(&arg, &buf); | |
717 | import_marks = strbuf_detach(&arg, NULL); | |
718 | } | |
719 | ||
720 | strbuf_reset(&buf); | |
721 | ||
722 | for (ref = remote_refs; ref; ref = ref->next) { | |
723 | char *private; | |
724 | unsigned char sha1[20]; | |
725 | ||
726 | if (!data->refspecs) | |
727 | continue; | |
728 | private = apply_refspecs(data->refspecs, data->refspec_nr, ref->name); | |
729 | if (private && !get_sha1(private, sha1)) { | |
730 | strbuf_addf(&buf, "^%s", private); | |
1d2f80fa | 731 | string_list_append(&revlist_args, strbuf_detach(&buf, NULL)); |
73b49a75 SR |
732 | } |
733 | ||
1d2f80fa | 734 | string_list_append(&revlist_args, ref->name); |
73b49a75 SR |
735 | |
736 | } | |
737 | ||
738 | if (get_exporter(transport, &exporter, | |
739 | export_marks, import_marks, &revlist_args)) | |
740 | die("Couldn't run fast-export"); | |
741 | ||
742 | data->no_disconnect_req = 1; | |
743 | finish_command(&exporter); | |
744 | disconnect_helper(transport); | |
745 | return 0; | |
746 | } | |
747 | ||
748 | static int push_refs(struct transport *transport, | |
749 | struct ref *remote_refs, int flags) | |
750 | { | |
751 | struct helper_data *data = transport->data; | |
752 | ||
753 | if (process_connect(transport, 1)) { | |
754 | do_take_over(transport); | |
755 | return transport->push_refs(transport, remote_refs, flags); | |
756 | } | |
757 | ||
758 | if (!remote_refs) { | |
759 | fprintf(stderr, "No refs in common and none specified; doing nothing.\n" | |
760 | "Perhaps you should specify a branch such as 'master'.\n"); | |
761 | return 0; | |
762 | } | |
763 | ||
764 | if (data->push) | |
765 | return push_refs_with_push(transport, remote_refs, flags); | |
766 | ||
767 | if (data->export) | |
768 | return push_refs_with_export(transport, remote_refs, flags); | |
769 | ||
770 | return -1; | |
771 | } | |
772 | ||
773 | ||
f8ec9167 DB |
774 | static int has_attribute(const char *attrs, const char *attr) { |
775 | int len; | |
776 | if (!attrs) | |
777 | return 0; | |
778 | ||
779 | len = strlen(attr); | |
780 | for (;;) { | |
781 | const char *space = strchrnul(attrs, ' '); | |
782 | if (len == space - attrs && !strncmp(attrs, attr, len)) | |
783 | return 1; | |
784 | if (!*space) | |
785 | return 0; | |
786 | attrs = space + 1; | |
787 | } | |
788 | } | |
789 | ||
6eb996b5 DB |
790 | static struct ref *get_refs_list(struct transport *transport, int for_push) |
791 | { | |
292ce46b | 792 | struct helper_data *data = transport->data; |
6eb996b5 DB |
793 | struct child_process *helper; |
794 | struct ref *ret = NULL; | |
795 | struct ref **tail = &ret; | |
796 | struct ref *posn; | |
797 | struct strbuf buf = STRBUF_INIT; | |
6eb996b5 DB |
798 | |
799 | helper = get_helper(transport); | |
2d14d65c | 800 | |
fa8c097c IL |
801 | if (process_connect(transport, for_push)) { |
802 | do_take_over(transport); | |
803 | return transport->get_refs_list(transport, for_push); | |
804 | } | |
805 | ||
ae4efe19 SP |
806 | if (data->push && for_push) |
807 | write_str_in_full(helper->in, "list for-push\n"); | |
808 | else | |
809 | write_str_in_full(helper->in, "list\n"); | |
6eb996b5 | 810 | |
6eb996b5 DB |
811 | while (1) { |
812 | char *eov, *eon; | |
bf3c523c | 813 | recvline(data, &buf); |
6eb996b5 DB |
814 | |
815 | if (!*buf.buf) | |
816 | break; | |
817 | ||
818 | eov = strchr(buf.buf, ' '); | |
819 | if (!eov) | |
820 | die("Malformed response in ref list: %s", buf.buf); | |
821 | eon = strchr(eov + 1, ' '); | |
822 | *eov = '\0'; | |
823 | if (eon) | |
824 | *eon = '\0'; | |
825 | *tail = alloc_ref(eov + 1); | |
826 | if (buf.buf[0] == '@') | |
827 | (*tail)->symref = xstrdup(buf.buf + 1); | |
828 | else if (buf.buf[0] != '?') | |
829 | get_sha1_hex(buf.buf, (*tail)->old_sha1); | |
f8ec9167 DB |
830 | if (eon) { |
831 | if (has_attribute(eon + 1, "unchanged")) { | |
832 | (*tail)->status |= REF_STATUS_UPTODATE; | |
833 | read_ref((*tail)->name, (*tail)->old_sha1); | |
834 | } | |
835 | } | |
6eb996b5 DB |
836 | tail = &((*tail)->next); |
837 | } | |
bf3c523c IL |
838 | if (debug) |
839 | fprintf(stderr, "Debug: Read ref listing.\n"); | |
6eb996b5 DB |
840 | strbuf_release(&buf); |
841 | ||
842 | for (posn = ret; posn; posn = posn->next) | |
843 | resolve_remote_symref(posn, ret); | |
844 | ||
845 | return ret; | |
846 | } | |
847 | ||
c9e388bb | 848 | int transport_helper_init(struct transport *transport, const char *name) |
6eb996b5 DB |
849 | { |
850 | struct helper_data *data = xcalloc(sizeof(*data), 1); | |
c9e388bb | 851 | data->name = name; |
6eb996b5 | 852 | |
bf3c523c IL |
853 | if (getenv("GIT_TRANSPORT_HELPER_DEBUG")) |
854 | debug = 1; | |
855 | ||
6eb996b5 | 856 | transport->data = data; |
ef08ef9e | 857 | transport->set_option = set_helper_option; |
6eb996b5 DB |
858 | transport->get_refs_list = get_refs_list; |
859 | transport->fetch = fetch; | |
ae4efe19 | 860 | transport->push_refs = push_refs; |
f2a37151 | 861 | transport->disconnect = release_helper; |
b236752a | 862 | transport->connect = connect_helper; |
61b075bd | 863 | transport->smart_options = &(data->transport_options); |
6eb996b5 DB |
864 | return 0; |
865 | } | |
419f37db IL |
866 | |
867 | /* | |
868 | * Linux pipes can buffer 65536 bytes at once (and most platforms can | |
869 | * buffer less), so attempt reads and writes with up to that size. | |
870 | */ | |
871 | #define BUFFERSIZE 65536 | |
872 | /* This should be enough to hold debugging message. */ | |
873 | #define PBUFFERSIZE 8192 | |
874 | ||
875 | /* Print bidirectional transfer loop debug message. */ | |
876 | static void transfer_debug(const char *fmt, ...) | |
877 | { | |
878 | va_list args; | |
879 | char msgbuf[PBUFFERSIZE]; | |
880 | static int debug_enabled = -1; | |
881 | ||
882 | if (debug_enabled < 0) | |
883 | debug_enabled = getenv("GIT_TRANSLOOP_DEBUG") ? 1 : 0; | |
884 | if (!debug_enabled) | |
885 | return; | |
886 | ||
887 | va_start(args, fmt); | |
888 | vsnprintf(msgbuf, PBUFFERSIZE, fmt, args); | |
889 | va_end(args); | |
890 | fprintf(stderr, "Transfer loop debugging: %s\n", msgbuf); | |
891 | } | |
892 | ||
893 | /* Stream state: More data may be coming in this direction. */ | |
894 | #define SSTATE_TRANSFERING 0 | |
895 | /* | |
896 | * Stream state: No more data coming in this direction, flushing rest of | |
897 | * data. | |
898 | */ | |
899 | #define SSTATE_FLUSHING 1 | |
900 | /* Stream state: Transfer in this direction finished. */ | |
901 | #define SSTATE_FINISHED 2 | |
902 | ||
903 | #define STATE_NEEDS_READING(state) ((state) <= SSTATE_TRANSFERING) | |
904 | #define STATE_NEEDS_WRITING(state) ((state) <= SSTATE_FLUSHING) | |
905 | #define STATE_NEEDS_CLOSING(state) ((state) == SSTATE_FLUSHING) | |
906 | ||
907 | /* Unidirectional transfer. */ | |
908 | struct unidirectional_transfer { | |
909 | /* Source */ | |
910 | int src; | |
911 | /* Destination */ | |
912 | int dest; | |
913 | /* Is source socket? */ | |
914 | int src_is_sock; | |
915 | /* Is destination socket? */ | |
916 | int dest_is_sock; | |
917 | /* Transfer state (TRANSFERING/FLUSHING/FINISHED) */ | |
918 | int state; | |
919 | /* Buffer. */ | |
920 | char buf[BUFFERSIZE]; | |
921 | /* Buffer used. */ | |
922 | size_t bufuse; | |
923 | /* Name of source. */ | |
924 | const char *src_name; | |
925 | /* Name of destination. */ | |
926 | const char *dest_name; | |
927 | }; | |
928 | ||
929 | /* Closes the target (for writing) if transfer has finished. */ | |
930 | static void udt_close_if_finished(struct unidirectional_transfer *t) | |
931 | { | |
932 | if (STATE_NEEDS_CLOSING(t->state) && !t->bufuse) { | |
933 | t->state = SSTATE_FINISHED; | |
934 | if (t->dest_is_sock) | |
935 | shutdown(t->dest, SHUT_WR); | |
936 | else | |
937 | close(t->dest); | |
938 | transfer_debug("Closed %s.", t->dest_name); | |
939 | } | |
940 | } | |
941 | ||
942 | /* | |
943 | * Tries to read read data from source into buffer. If buffer is full, | |
944 | * no data is read. Returns 0 on success, -1 on error. | |
945 | */ | |
946 | static int udt_do_read(struct unidirectional_transfer *t) | |
947 | { | |
948 | ssize_t bytes; | |
949 | ||
950 | if (t->bufuse == BUFFERSIZE) | |
951 | return 0; /* No space for more. */ | |
952 | ||
953 | transfer_debug("%s is readable", t->src_name); | |
954 | bytes = read(t->src, t->buf + t->bufuse, BUFFERSIZE - t->bufuse); | |
955 | if (bytes < 0 && errno != EWOULDBLOCK && errno != EAGAIN && | |
956 | errno != EINTR) { | |
957 | error("read(%s) failed: %s", t->src_name, strerror(errno)); | |
958 | return -1; | |
959 | } else if (bytes == 0) { | |
960 | transfer_debug("%s EOF (with %i bytes in buffer)", | |
961 | t->src_name, t->bufuse); | |
962 | t->state = SSTATE_FLUSHING; | |
963 | } else if (bytes > 0) { | |
964 | t->bufuse += bytes; | |
965 | transfer_debug("Read %i bytes from %s (buffer now at %i)", | |
966 | (int)bytes, t->src_name, (int)t->bufuse); | |
967 | } | |
968 | return 0; | |
969 | } | |
970 | ||
971 | /* Tries to write data from buffer into destination. If buffer is empty, | |
972 | * no data is written. Returns 0 on success, -1 on error. | |
973 | */ | |
974 | static int udt_do_write(struct unidirectional_transfer *t) | |
975 | { | |
976 | size_t bytes; | |
977 | ||
978 | if (t->bufuse == 0) | |
979 | return 0; /* Nothing to write. */ | |
980 | ||
981 | transfer_debug("%s is writable", t->dest_name); | |
982 | bytes = write(t->dest, t->buf, t->bufuse); | |
983 | if (bytes < 0 && errno != EWOULDBLOCK && errno != EAGAIN && | |
984 | errno != EINTR) { | |
985 | error("write(%s) failed: %s", t->dest_name, strerror(errno)); | |
986 | return -1; | |
987 | } else if (bytes > 0) { | |
988 | t->bufuse -= bytes; | |
989 | if (t->bufuse) | |
990 | memmove(t->buf, t->buf + bytes, t->bufuse); | |
991 | transfer_debug("Wrote %i bytes to %s (buffer now at %i)", | |
992 | (int)bytes, t->dest_name, (int)t->bufuse); | |
993 | } | |
994 | return 0; | |
995 | } | |
996 | ||
997 | ||
998 | /* State of bidirectional transfer loop. */ | |
999 | struct bidirectional_transfer_state { | |
1000 | /* Direction from program to git. */ | |
1001 | struct unidirectional_transfer ptg; | |
1002 | /* Direction from git to program. */ | |
1003 | struct unidirectional_transfer gtp; | |
1004 | }; | |
1005 | ||
1006 | static void *udt_copy_task_routine(void *udt) | |
1007 | { | |
1008 | struct unidirectional_transfer *t = (struct unidirectional_transfer *)udt; | |
1009 | while (t->state != SSTATE_FINISHED) { | |
1010 | if (STATE_NEEDS_READING(t->state)) | |
1011 | if (udt_do_read(t)) | |
1012 | return NULL; | |
1013 | if (STATE_NEEDS_WRITING(t->state)) | |
1014 | if (udt_do_write(t)) | |
1015 | return NULL; | |
1016 | if (STATE_NEEDS_CLOSING(t->state)) | |
1017 | udt_close_if_finished(t); | |
1018 | } | |
1019 | return udt; /* Just some non-NULL value. */ | |
1020 | } | |
1021 | ||
1022 | #ifndef NO_PTHREADS | |
1023 | ||
1024 | /* | |
1025 | * Join thread, with apporiate errors on failure. Name is name for the | |
1026 | * thread (for error messages). Returns 0 on success, 1 on failure. | |
1027 | */ | |
1028 | static int tloop_join(pthread_t thread, const char *name) | |
1029 | { | |
1030 | int err; | |
1031 | void *tret; | |
1032 | err = pthread_join(thread, &tret); | |
1033 | if (!tret) { | |
1034 | error("%s thread failed", name); | |
1035 | return 1; | |
1036 | } | |
1037 | if (err) { | |
1038 | error("%s thread failed to join: %s", name, strerror(err)); | |
1039 | return 1; | |
1040 | } | |
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | /* | |
1045 | * Spawn the transfer tasks and then wait for them. Returns 0 on success, | |
1046 | * -1 on failure. | |
1047 | */ | |
1048 | static int tloop_spawnwait_tasks(struct bidirectional_transfer_state *s) | |
1049 | { | |
1050 | pthread_t gtp_thread; | |
1051 | pthread_t ptg_thread; | |
1052 | int err; | |
1053 | int ret = 0; | |
1054 | err = pthread_create(>p_thread, NULL, udt_copy_task_routine, | |
1055 | &s->gtp); | |
1056 | if (err) | |
1057 | die("Can't start thread for copying data: %s", strerror(err)); | |
1058 | err = pthread_create(&ptg_thread, NULL, udt_copy_task_routine, | |
1059 | &s->ptg); | |
1060 | if (err) | |
1061 | die("Can't start thread for copying data: %s", strerror(err)); | |
1062 | ||
1063 | ret |= tloop_join(gtp_thread, "Git to program copy"); | |
1064 | ret |= tloop_join(ptg_thread, "Program to git copy"); | |
1065 | return ret; | |
1066 | } | |
1067 | #else | |
1068 | ||
1069 | /* Close the source and target (for writing) for transfer. */ | |
1070 | static void udt_kill_transfer(struct unidirectional_transfer *t) | |
1071 | { | |
1072 | t->state = SSTATE_FINISHED; | |
1073 | /* | |
1074 | * Socket read end left open isn't a disaster if nobody | |
1075 | * attempts to read from it (mingw compat headers do not | |
1076 | * have SHUT_RD)... | |
1077 | * | |
1078 | * We can't fully close the socket since otherwise gtp | |
1079 | * task would first close the socket it sends data to | |
1080 | * while closing the ptg file descriptors. | |
1081 | */ | |
1082 | if (!t->src_is_sock) | |
1083 | close(t->src); | |
1084 | if (t->dest_is_sock) | |
1085 | shutdown(t->dest, SHUT_WR); | |
1086 | else | |
1087 | close(t->dest); | |
1088 | } | |
1089 | ||
1090 | /* | |
1091 | * Join process, with apporiate errors on failure. Name is name for the | |
1092 | * process (for error messages). Returns 0 on success, 1 on failure. | |
1093 | */ | |
1094 | static int tloop_join(pid_t pid, const char *name) | |
1095 | { | |
1096 | int tret; | |
1097 | if (waitpid(pid, &tret, 0) < 0) { | |
1098 | error("%s process failed to wait: %s", name, strerror(errno)); | |
1099 | return 1; | |
1100 | } | |
1101 | if (!WIFEXITED(tret) || WEXITSTATUS(tret)) { | |
1102 | error("%s process failed", name); | |
1103 | return 1; | |
1104 | } | |
1105 | return 0; | |
1106 | } | |
1107 | ||
1108 | /* | |
1109 | * Spawn the transfer tasks and then wait for them. Returns 0 on success, | |
1110 | * -1 on failure. | |
1111 | */ | |
1112 | static int tloop_spawnwait_tasks(struct bidirectional_transfer_state *s) | |
1113 | { | |
1114 | pid_t pid1, pid2; | |
1115 | int ret = 0; | |
1116 | ||
1117 | /* Fork thread #1: git to program. */ | |
1118 | pid1 = fork(); | |
1119 | if (pid1 < 0) | |
1120 | die_errno("Can't start thread for copying data"); | |
1121 | else if (pid1 == 0) { | |
1122 | udt_kill_transfer(&s->ptg); | |
1123 | exit(udt_copy_task_routine(&s->gtp) ? 0 : 1); | |
1124 | } | |
1125 | ||
1126 | /* Fork thread #2: program to git. */ | |
1127 | pid2 = fork(); | |
1128 | if (pid2 < 0) | |
1129 | die_errno("Can't start thread for copying data"); | |
1130 | else if (pid2 == 0) { | |
1131 | udt_kill_transfer(&s->gtp); | |
1132 | exit(udt_copy_task_routine(&s->ptg) ? 0 : 1); | |
1133 | } | |
1134 | ||
1135 | /* | |
1136 | * Close both streams in parent as to not interfere with | |
1137 | * end of file detection and wait for both tasks to finish. | |
1138 | */ | |
1139 | udt_kill_transfer(&s->gtp); | |
1140 | udt_kill_transfer(&s->ptg); | |
1141 | ret |= tloop_join(pid1, "Git to program copy"); | |
1142 | ret |= tloop_join(pid2, "Program to git copy"); | |
1143 | return ret; | |
1144 | } | |
1145 | #endif | |
1146 | ||
1147 | /* | |
1148 | * Copies data from stdin to output and from input to stdout simultaneously. | |
1149 | * Additionally filtering through given filter. If filter is NULL, uses | |
1150 | * identity filter. | |
1151 | */ | |
1152 | int bidirectional_transfer_loop(int input, int output) | |
1153 | { | |
1154 | struct bidirectional_transfer_state state; | |
1155 | ||
1156 | /* Fill the state fields. */ | |
1157 | state.ptg.src = input; | |
1158 | state.ptg.dest = 1; | |
1159 | state.ptg.src_is_sock = (input == output); | |
1160 | state.ptg.dest_is_sock = 0; | |
1161 | state.ptg.state = SSTATE_TRANSFERING; | |
1162 | state.ptg.bufuse = 0; | |
1163 | state.ptg.src_name = "remote input"; | |
1164 | state.ptg.dest_name = "stdout"; | |
1165 | ||
1166 | state.gtp.src = 0; | |
1167 | state.gtp.dest = output; | |
1168 | state.gtp.src_is_sock = 0; | |
1169 | state.gtp.dest_is_sock = (input == output); | |
1170 | state.gtp.state = SSTATE_TRANSFERING; | |
1171 | state.gtp.bufuse = 0; | |
1172 | state.gtp.src_name = "stdin"; | |
1173 | state.gtp.dest_name = "remote output"; | |
1174 | ||
1175 | return tloop_spawnwait_tasks(&state); | |
1176 | } |