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Commit | Line | Data |
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731043fd | 1 | #include "git-compat-util.h" |
f7192598 | 2 | #include "cache.h" |
41cb7488 | 3 | #include "pkt-line.h" |
b10d0ec7 | 4 | #include "quote.h" |
6abf5c0c | 5 | #include "refs.h" |
f7192598 | 6 | #include <sys/wait.h> |
2386d658 LT |
7 | #include <sys/socket.h> |
8 | #include <netinet/in.h> | |
9 | #include <arpa/inet.h> | |
10 | #include <netdb.h> | |
f7192598 | 11 | |
1f5881bb | 12 | static char *server_capabilities = NULL; |
211b5f9e | 13 | |
d1c133f5 LT |
14 | /* |
15 | * Read all the refs from the other end | |
16 | */ | |
1a7141ff JH |
17 | struct ref **get_remote_heads(int in, struct ref **list, |
18 | int nr_match, char **match, int ignore_funny) | |
d1c133f5 LT |
19 | { |
20 | *list = NULL; | |
21 | for (;;) { | |
22 | struct ref *ref; | |
23 | unsigned char old_sha1[20]; | |
24 | static char buffer[1000]; | |
25 | char *name; | |
211b5f9e | 26 | int len, name_len; |
d1c133f5 LT |
27 | |
28 | len = packet_read_line(in, buffer, sizeof(buffer)); | |
29 | if (!len) | |
30 | break; | |
31 | if (buffer[len-1] == '\n') | |
32 | buffer[--len] = 0; | |
33 | ||
34 | if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ') | |
35 | die("protocol error: expected sha/ref, got '%s'", buffer); | |
36 | name = buffer + 41; | |
1a7141ff | 37 | |
211b5f9e JS |
38 | name_len = strlen(name); |
39 | if (len != name_len + 41) { | |
40 | if (server_capabilities) | |
41 | free(server_capabilities); | |
42 | server_capabilities = strdup(name + name_len + 1); | |
43 | } | |
44 | ||
cfee10a7 JH |
45 | if (ignore_funny && 45 < len && !memcmp(name, "refs/", 5) && |
46 | check_ref_format(name + 5)) | |
47 | continue; | |
48 | ||
d1c133f5 LT |
49 | if (nr_match && !path_match(name, nr_match, match)) |
50 | continue; | |
f88395ac | 51 | ref = xcalloc(1, sizeof(*ref) + len - 40); |
d1c133f5 | 52 | memcpy(ref->old_sha1, old_sha1, 20); |
d1c133f5 | 53 | memcpy(ref->name, buffer + 41, len - 40); |
d1c133f5 LT |
54 | *list = ref; |
55 | list = &ref->next; | |
56 | } | |
57 | return list; | |
58 | } | |
59 | ||
211b5f9e JS |
60 | int server_supports(const char *feature) |
61 | { | |
1f5881bb JS |
62 | return server_capabilities && |
63 | strstr(server_capabilities, feature) != NULL; | |
211b5f9e JS |
64 | } |
65 | ||
41cb7488 LT |
66 | int get_ack(int fd, unsigned char *result_sha1) |
67 | { | |
68 | static char line[1000]; | |
69 | int len = packet_read_line(fd, line, sizeof(line)); | |
70 | ||
71 | if (!len) | |
72 | die("git-fetch-pack: expected ACK/NAK, got EOF"); | |
73 | if (line[len-1] == '\n') | |
74 | line[--len] = 0; | |
75 | if (!strcmp(line, "NAK")) | |
76 | return 0; | |
da2a95b2 | 77 | if (!strncmp(line, "ACK ", 4)) { |
c4c86f07 JS |
78 | if (!get_sha1_hex(line+4, result_sha1)) { |
79 | if (strstr(line+45, "continue")) | |
80 | return 2; | |
41cb7488 | 81 | return 1; |
c4c86f07 | 82 | } |
41cb7488 LT |
83 | } |
84 | die("git-fetch_pack: expected ACK/NAK, got '%s'", line); | |
85 | } | |
86 | ||
013e7c7f LT |
87 | int path_match(const char *path, int nr, char **match) |
88 | { | |
89 | int i; | |
90 | int pathlen = strlen(path); | |
91 | ||
92 | for (i = 0; i < nr; i++) { | |
93 | char *s = match[i]; | |
94 | int len = strlen(s); | |
95 | ||
96 | if (!len || len > pathlen) | |
97 | continue; | |
98 | if (memcmp(path + pathlen - len, s, len)) | |
99 | continue; | |
100 | if (pathlen > len && path[pathlen - len - 1] != '/') | |
101 | continue; | |
102 | *s = 0; | |
9546010b | 103 | return (i + 1); |
013e7c7f LT |
104 | } |
105 | return 0; | |
106 | } | |
107 | ||
f88395ac JH |
108 | struct refspec { |
109 | char *src; | |
110 | char *dst; | |
ff27adf3 | 111 | char force; |
f88395ac JH |
112 | }; |
113 | ||
ff27adf3 JH |
114 | /* |
115 | * A:B means fast forward remote B with local A. | |
116 | * +A:B means overwrite remote B with local A. | |
117 | * +A is a shorthand for +A:A. | |
118 | * A is a shorthand for A:A. | |
119 | */ | |
f88395ac JH |
120 | static struct refspec *parse_ref_spec(int nr_refspec, char **refspec) |
121 | { | |
122 | int i; | |
ff27adf3 | 123 | struct refspec *rs = xcalloc(sizeof(*rs), (nr_refspec + 1)); |
f88395ac JH |
124 | for (i = 0; i < nr_refspec; i++) { |
125 | char *sp, *dp, *ep; | |
126 | sp = refspec[i]; | |
ff27adf3 JH |
127 | if (*sp == '+') { |
128 | rs[i].force = 1; | |
129 | sp++; | |
130 | } | |
f88395ac JH |
131 | ep = strchr(sp, ':'); |
132 | if (ep) { | |
133 | dp = ep + 1; | |
134 | *ep = 0; | |
135 | } | |
136 | else | |
137 | dp = sp; | |
138 | rs[i].src = sp; | |
139 | rs[i].dst = dp; | |
140 | } | |
141 | rs[nr_refspec].src = rs[nr_refspec].dst = NULL; | |
142 | return rs; | |
143 | } | |
144 | ||
145 | static int count_refspec_match(const char *pattern, | |
146 | struct ref *refs, | |
147 | struct ref **matched_ref) | |
148 | { | |
149 | int match; | |
150 | int patlen = strlen(pattern); | |
151 | ||
152 | for (match = 0; refs; refs = refs->next) { | |
153 | char *name = refs->name; | |
154 | int namelen = strlen(name); | |
155 | if (namelen < patlen || | |
156 | memcmp(name + namelen - patlen, pattern, patlen)) | |
157 | continue; | |
158 | if (namelen != patlen && name[namelen - patlen - 1] != '/') | |
159 | continue; | |
160 | match++; | |
161 | *matched_ref = refs; | |
162 | } | |
163 | return match; | |
164 | } | |
165 | ||
166 | static void link_dst_tail(struct ref *ref, struct ref ***tail) | |
167 | { | |
168 | **tail = ref; | |
169 | *tail = &ref->next; | |
170 | **tail = NULL; | |
171 | } | |
172 | ||
15e02b37 JH |
173 | static struct ref *try_explicit_object_name(const char *name) |
174 | { | |
175 | unsigned char sha1[20]; | |
176 | struct ref *ref; | |
177 | int len; | |
178 | if (get_sha1(name, sha1)) | |
179 | return NULL; | |
180 | len = strlen(name) + 1; | |
181 | ref = xcalloc(1, sizeof(*ref) + len); | |
182 | memcpy(ref->name, name, len); | |
183 | memcpy(ref->new_sha1, sha1, 20); | |
184 | return ref; | |
185 | } | |
186 | ||
f88395ac JH |
187 | static int match_explicit_refs(struct ref *src, struct ref *dst, |
188 | struct ref ***dst_tail, struct refspec *rs) | |
189 | { | |
190 | int i, errs; | |
191 | for (i = errs = 0; rs[i].src; i++) { | |
192 | struct ref *matched_src, *matched_dst; | |
193 | ||
194 | matched_src = matched_dst = NULL; | |
195 | switch (count_refspec_match(rs[i].src, src, &matched_src)) { | |
196 | case 1: | |
197 | break; | |
198 | case 0: | |
15e02b37 JH |
199 | /* The source could be in the get_sha1() format |
200 | * not a reference name. | |
201 | */ | |
202 | matched_src = try_explicit_object_name(rs[i].src); | |
203 | if (matched_src) | |
204 | break; | |
f88395ac | 205 | errs = 1; |
4ec99bf0 TS |
206 | error("src refspec %s does not match any.", |
207 | rs[i].src); | |
f88395ac JH |
208 | break; |
209 | default: | |
210 | errs = 1; | |
211 | error("src refspec %s matches more than one.", | |
212 | rs[i].src); | |
213 | break; | |
214 | } | |
215 | switch (count_refspec_match(rs[i].dst, dst, &matched_dst)) { | |
216 | case 1: | |
217 | break; | |
218 | case 0: | |
219 | if (!memcmp(rs[i].dst, "refs/", 5)) { | |
220 | int len = strlen(rs[i].dst) + 1; | |
221 | matched_dst = xcalloc(1, sizeof(*dst) + len); | |
222 | memcpy(matched_dst->name, rs[i].dst, len); | |
223 | link_dst_tail(matched_dst, dst_tail); | |
224 | } | |
225 | else if (!strcmp(rs[i].src, rs[i].dst) && | |
226 | matched_src) { | |
227 | /* pushing "master:master" when | |
228 | * remote does not have master yet. | |
229 | */ | |
4fa1604f | 230 | int len = strlen(matched_src->name) + 1; |
f88395ac JH |
231 | matched_dst = xcalloc(1, sizeof(*dst) + len); |
232 | memcpy(matched_dst->name, matched_src->name, | |
233 | len); | |
234 | link_dst_tail(matched_dst, dst_tail); | |
235 | } | |
236 | else { | |
237 | errs = 1; | |
238 | error("dst refspec %s does not match any " | |
239 | "existing ref on the remote and does " | |
240 | "not start with refs/.", rs[i].dst); | |
241 | } | |
242 | break; | |
243 | default: | |
244 | errs = 1; | |
245 | error("dst refspec %s matches more than one.", | |
246 | rs[i].dst); | |
247 | break; | |
248 | } | |
249 | if (errs) | |
250 | continue; | |
f88395ac JH |
251 | if (matched_dst->peer_ref) { |
252 | errs = 1; | |
253 | error("dst ref %s receives from more than one src.", | |
254 | matched_dst->name); | |
255 | } | |
ff27adf3 | 256 | else { |
f88395ac | 257 | matched_dst->peer_ref = matched_src; |
ff27adf3 JH |
258 | matched_dst->force = rs[i].force; |
259 | } | |
f88395ac JH |
260 | } |
261 | return -errs; | |
262 | } | |
263 | ||
264 | static struct ref *find_ref_by_name(struct ref *list, const char *name) | |
265 | { | |
266 | for ( ; list; list = list->next) | |
267 | if (!strcmp(list->name, name)) | |
268 | return list; | |
269 | return NULL; | |
270 | } | |
271 | ||
272 | int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail, | |
273 | int nr_refspec, char **refspec, int all) | |
274 | { | |
275 | struct refspec *rs = parse_ref_spec(nr_refspec, refspec); | |
276 | ||
277 | if (nr_refspec) | |
278 | return match_explicit_refs(src, dst, dst_tail, rs); | |
279 | ||
280 | /* pick the remainder */ | |
281 | for ( ; src; src = src->next) { | |
282 | struct ref *dst_peer; | |
283 | if (src->peer_ref) | |
284 | continue; | |
285 | dst_peer = find_ref_by_name(dst, src->name); | |
635d37af | 286 | if ((dst_peer && dst_peer->peer_ref) || (!dst_peer && !all)) |
f88395ac JH |
287 | continue; |
288 | if (!dst_peer) { | |
f88395ac JH |
289 | /* Create a new one and link it */ |
290 | int len = strlen(src->name) + 1; | |
291 | dst_peer = xcalloc(1, sizeof(*dst_peer) + len); | |
292 | memcpy(dst_peer->name, src->name, len); | |
293 | memcpy(dst_peer->new_sha1, src->new_sha1, 20); | |
294 | link_dst_tail(dst_peer, dst_tail); | |
295 | } | |
296 | dst_peer->peer_ref = src; | |
297 | } | |
298 | return 0; | |
299 | } | |
300 | ||
2386d658 LT |
301 | enum protocol { |
302 | PROTO_LOCAL = 1, | |
303 | PROTO_SSH, | |
304 | PROTO_GIT, | |
305 | }; | |
306 | ||
307 | static enum protocol get_protocol(const char *name) | |
308 | { | |
309 | if (!strcmp(name, "ssh")) | |
310 | return PROTO_SSH; | |
311 | if (!strcmp(name, "git")) | |
312 | return PROTO_GIT; | |
c05186cc LT |
313 | if (!strcmp(name, "git+ssh")) |
314 | return PROTO_SSH; | |
315 | if (!strcmp(name, "ssh+git")) | |
316 | return PROTO_SSH; | |
2386d658 LT |
317 | die("I don't handle protocol '%s'", name); |
318 | } | |
319 | ||
5ba88448 YH |
320 | #define STR_(s) # s |
321 | #define STR(s) STR_(s) | |
2386d658 | 322 | |
49744d63 | 323 | #ifndef NO_IPV6 |
4c505f71 | 324 | |
5ad312be JL |
325 | /* |
326 | * Returns a connected socket() fd, or else die()s. | |
327 | */ | |
328 | static int git_tcp_connect_sock(char *host) | |
2386d658 | 329 | { |
5ba88448 YH |
330 | int sockfd = -1; |
331 | char *colon, *end; | |
332 | char *port = STR(DEFAULT_GIT_PORT); | |
333 | struct addrinfo hints, *ai0, *ai; | |
334 | int gai; | |
335 | ||
336 | if (host[0] == '[') { | |
337 | end = strchr(host + 1, ']'); | |
338 | if (end) { | |
339 | *end = 0; | |
340 | end++; | |
341 | host++; | |
342 | } else | |
343 | end = host; | |
344 | } else | |
345 | end = host; | |
346 | colon = strchr(end, ':'); | |
347 | ||
ce6f8e7e LT |
348 | if (colon) { |
349 | *colon = 0; | |
5ba88448 | 350 | port = colon + 1; |
ce6f8e7e | 351 | } |
5ba88448 YH |
352 | |
353 | memset(&hints, 0, sizeof(hints)); | |
354 | hints.ai_socktype = SOCK_STREAM; | |
355 | hints.ai_protocol = IPPROTO_TCP; | |
356 | ||
357 | gai = getaddrinfo(host, port, &hints, &ai); | |
358 | if (gai) | |
359 | die("Unable to look up %s (%s)", host, gai_strerror(gai)); | |
360 | ||
361 | for (ai0 = ai; ai; ai = ai->ai_next) { | |
5ad312be JL |
362 | sockfd = socket(ai->ai_family, |
363 | ai->ai_socktype, ai->ai_protocol); | |
5ba88448 YH |
364 | if (sockfd < 0) |
365 | continue; | |
366 | if (connect(sockfd, ai->ai_addr, ai->ai_addrlen) < 0) { | |
367 | close(sockfd); | |
368 | sockfd = -1; | |
369 | continue; | |
2386d658 | 370 | } |
5ba88448 | 371 | break; |
2386d658 LT |
372 | } |
373 | ||
5ba88448 | 374 | freeaddrinfo(ai0); |
2386d658 | 375 | |
2386d658 | 376 | if (sockfd < 0) |
5ba88448 YH |
377 | die("unable to connect a socket (%s)", strerror(errno)); |
378 | ||
5ad312be | 379 | return sockfd; |
2386d658 LT |
380 | } |
381 | ||
49744d63 | 382 | #else /* NO_IPV6 */ |
4c505f71 | 383 | |
5ad312be JL |
384 | /* |
385 | * Returns a connected socket() fd, or else die()s. | |
386 | */ | |
387 | static int git_tcp_connect_sock(char *host) | |
4c505f71 PA |
388 | { |
389 | int sockfd = -1; | |
390 | char *colon, *end; | |
391 | char *port = STR(DEFAULT_GIT_PORT), *ep; | |
392 | struct hostent *he; | |
393 | struct sockaddr_in sa; | |
394 | char **ap; | |
395 | unsigned int nport; | |
396 | ||
397 | if (host[0] == '[') { | |
398 | end = strchr(host + 1, ']'); | |
399 | if (end) { | |
400 | *end = 0; | |
401 | end++; | |
402 | host++; | |
403 | } else | |
404 | end = host; | |
405 | } else | |
406 | end = host; | |
407 | colon = strchr(end, ':'); | |
408 | ||
409 | if (colon) { | |
410 | *colon = 0; | |
411 | port = colon + 1; | |
412 | } | |
413 | ||
4c505f71 PA |
414 | he = gethostbyname(host); |
415 | if (!he) | |
416 | die("Unable to look up %s (%s)", host, hstrerror(h_errno)); | |
417 | nport = strtoul(port, &ep, 10); | |
418 | if ( ep == port || *ep ) { | |
419 | /* Not numeric */ | |
420 | struct servent *se = getservbyname(port,"tcp"); | |
421 | if ( !se ) | |
422 | die("Unknown port %s\n", port); | |
423 | nport = se->s_port; | |
424 | } | |
425 | ||
426 | for (ap = he->h_addr_list; *ap; ap++) { | |
427 | sockfd = socket(he->h_addrtype, SOCK_STREAM, 0); | |
428 | if (sockfd < 0) | |
429 | continue; | |
430 | ||
431 | memset(&sa, 0, sizeof sa); | |
432 | sa.sin_family = he->h_addrtype; | |
6573faff | 433 | sa.sin_port = htons(nport); |
c6164218 | 434 | memcpy(&sa.sin_addr, *ap, he->h_length); |
4c505f71 PA |
435 | |
436 | if (connect(sockfd, (struct sockaddr *)&sa, sizeof sa) < 0) { | |
437 | close(sockfd); | |
438 | sockfd = -1; | |
439 | continue; | |
440 | } | |
441 | break; | |
442 | } | |
443 | ||
444 | if (sockfd < 0) | |
445 | die("unable to connect a socket (%s)", strerror(errno)); | |
446 | ||
5ad312be JL |
447 | return sockfd; |
448 | } | |
449 | ||
450 | #endif /* NO_IPV6 */ | |
451 | ||
452 | ||
453 | static void git_tcp_connect(int fd[2], | |
454 | const char *prog, char *host, char *path) | |
455 | { | |
456 | int sockfd = git_tcp_connect_sock(host); | |
457 | ||
4c505f71 PA |
458 | fd[0] = sockfd; |
459 | fd[1] = sockfd; | |
4c505f71 PA |
460 | } |
461 | ||
4c505f71 | 462 | |
f8014776 | 463 | static char *git_proxy_command = NULL; |
e814bc4d JH |
464 | static const char *rhost_name = NULL; |
465 | static int rhost_len; | |
f8014776 PC |
466 | |
467 | static int git_proxy_command_options(const char *var, const char *value) | |
468 | { | |
e814bc4d | 469 | if (!strcmp(var, "core.gitproxy")) { |
c3df8568 YH |
470 | const char *for_pos; |
471 | int matchlen = -1; | |
472 | int hostlen; | |
473 | ||
e814bc4d | 474 | if (git_proxy_command) |
f8014776 | 475 | return 0; |
e814bc4d JH |
476 | /* [core] |
477 | * ;# matches www.kernel.org as well | |
478 | * gitproxy = netcatter-1 for kernel.org | |
479 | * gitproxy = netcatter-2 for sample.xz | |
480 | * gitproxy = netcatter-default | |
481 | */ | |
c3df8568 | 482 | for_pos = strstr(value, " for "); |
e814bc4d JH |
483 | if (!for_pos) |
484 | /* matches everybody */ | |
485 | matchlen = strlen(value); | |
486 | else { | |
487 | hostlen = strlen(for_pos + 5); | |
488 | if (rhost_len < hostlen) | |
489 | matchlen = -1; | |
490 | else if (!strncmp(for_pos + 5, | |
491 | rhost_name + rhost_len - hostlen, | |
492 | hostlen) && | |
493 | ((rhost_len == hostlen) || | |
494 | rhost_name[rhost_len - hostlen -1] == '.')) | |
495 | matchlen = for_pos - value; | |
496 | else | |
497 | matchlen = -1; | |
498 | } | |
499 | if (0 <= matchlen) { | |
500 | /* core.gitproxy = none for kernel.org */ | |
501 | if (matchlen == 4 && | |
502 | !memcmp(value, "none", 4)) | |
503 | matchlen = 0; | |
504 | git_proxy_command = xmalloc(matchlen + 1); | |
505 | memcpy(git_proxy_command, value, matchlen); | |
506 | git_proxy_command[matchlen] = 0; | |
f8014776 | 507 | } |
e814bc4d | 508 | return 0; |
f8014776 PC |
509 | } |
510 | ||
511 | return git_default_config(var, value); | |
512 | } | |
513 | ||
e814bc4d | 514 | static int git_use_proxy(const char *host) |
f8014776 | 515 | { |
e814bc4d JH |
516 | rhost_name = host; |
517 | rhost_len = strlen(host); | |
f8014776 PC |
518 | git_proxy_command = getenv("GIT_PROXY_COMMAND"); |
519 | git_config(git_proxy_command_options); | |
e814bc4d JH |
520 | rhost_name = NULL; |
521 | return (git_proxy_command && *git_proxy_command); | |
f8014776 PC |
522 | } |
523 | ||
5ad312be JL |
524 | static void git_proxy_connect(int fd[2], |
525 | const char *prog, char *host, char *path) | |
f8014776 PC |
526 | { |
527 | char *port = STR(DEFAULT_GIT_PORT); | |
528 | char *colon, *end; | |
529 | int pipefd[2][2]; | |
530 | pid_t pid; | |
531 | ||
532 | if (host[0] == '[') { | |
533 | end = strchr(host + 1, ']'); | |
534 | if (end) { | |
535 | *end = 0; | |
536 | end++; | |
537 | host++; | |
538 | } else | |
539 | end = host; | |
540 | } else | |
541 | end = host; | |
542 | colon = strchr(end, ':'); | |
543 | ||
544 | if (colon) { | |
545 | *colon = 0; | |
546 | port = colon + 1; | |
547 | } | |
548 | ||
549 | if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0) | |
550 | die("unable to create pipe pair for communication"); | |
551 | pid = fork(); | |
552 | if (!pid) { | |
553 | dup2(pipefd[1][0], 0); | |
554 | dup2(pipefd[0][1], 1); | |
555 | close(pipefd[0][0]); | |
556 | close(pipefd[0][1]); | |
557 | close(pipefd[1][0]); | |
558 | close(pipefd[1][1]); | |
559 | execlp(git_proxy_command, git_proxy_command, host, port, NULL); | |
560 | die("exec failed"); | |
561 | } | |
5ad312be JL |
562 | if (pid < 0) |
563 | die("fork failed"); | |
f8014776 PC |
564 | fd[0] = pipefd[0][0]; |
565 | fd[1] = pipefd[1][1]; | |
566 | close(pipefd[0][1]); | |
567 | close(pipefd[1][0]); | |
f8014776 PC |
568 | } |
569 | ||
f7192598 LT |
570 | /* |
571 | * Yeah, yeah, fixme. Need to pass in the heads etc. | |
572 | */ | |
573 | int git_connect(int fd[2], char *url, const char *prog) | |
574 | { | |
575 | char command[1024]; | |
faea9ccb | 576 | char *host, *path = url; |
356bece0 YH |
577 | char *end; |
578 | int c; | |
f7192598 LT |
579 | int pipefd[2][2]; |
580 | pid_t pid; | |
faea9ccb | 581 | enum protocol protocol = PROTO_LOCAL; |
da2a95b2 | 582 | int free_path = 0; |
faea9ccb | 583 | |
f0b7367c JH |
584 | /* Without this we cannot rely on waitpid() to tell |
585 | * what happened to our children. | |
586 | */ | |
587 | signal(SIGCHLD, SIG_DFL); | |
588 | ||
faea9ccb AE |
589 | host = strstr(url, "://"); |
590 | if(host) { | |
591 | *host = '\0'; | |
592 | protocol = get_protocol(url); | |
593 | host += 3; | |
356bece0 YH |
594 | c = '/'; |
595 | } else { | |
f7192598 | 596 | host = url; |
356bece0 YH |
597 | c = ':'; |
598 | } | |
599 | ||
600 | if (host[0] == '[') { | |
601 | end = strchr(host + 1, ']'); | |
602 | if (end) { | |
603 | *end = 0; | |
604 | end++; | |
605 | host++; | |
606 | } else | |
607 | end = host; | |
608 | } else | |
609 | end = host; | |
610 | ||
611 | path = strchr(end, c); | |
612 | if (c == ':') { | |
613 | if (path) { | |
faea9ccb | 614 | protocol = PROTO_SSH; |
356bece0 YH |
615 | *path++ = '\0'; |
616 | } else | |
617 | path = host; | |
f7192598 | 618 | } |
2386d658 | 619 | |
faea9ccb AE |
620 | if (!path || !*path) |
621 | die("No path specified. See 'man git-pull' for valid url syntax"); | |
622 | ||
623 | /* | |
624 | * null-terminate hostname and point path to ~ for URL's like this: | |
625 | * ssh://host.xz/~user/repo | |
626 | */ | |
627 | if (protocol != PROTO_LOCAL && host != url) { | |
628 | char *ptr = path; | |
629 | if (path[1] == '~') | |
630 | path++; | |
da2a95b2 | 631 | else { |
faea9ccb | 632 | path = strdup(ptr); |
da2a95b2 SH |
633 | free_path = 1; |
634 | } | |
faea9ccb AE |
635 | |
636 | *ptr = '\0'; | |
637 | } | |
638 | ||
f8014776 | 639 | if (protocol == PROTO_GIT) { |
5ad312be JL |
640 | /* These underlying connection commands die() if they |
641 | * cannot connect. | |
642 | */ | |
643 | char *target_host = strdup(host); | |
e814bc4d | 644 | if (git_use_proxy(host)) |
5ad312be | 645 | git_proxy_connect(fd, prog, host, path); |
da2a95b2 | 646 | else |
5ad312be JL |
647 | git_tcp_connect(fd, prog, host, path); |
648 | /* | |
649 | * Separate original protocol components prog and path | |
650 | * from extended components with a NUL byte. | |
651 | */ | |
652 | packet_write(fd[1], | |
653 | "%s %s%chost=%s%c", | |
654 | prog, path, 0, | |
655 | target_host, 0); | |
656 | free(target_host); | |
da2a95b2 SH |
657 | if (free_path) |
658 | free(path); | |
5ad312be | 659 | return 0; |
f8014776 | 660 | } |
2386d658 | 661 | |
f7192598 LT |
662 | if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0) |
663 | die("unable to create pipe pair for communication"); | |
664 | pid = fork(); | |
c9bc159d PD |
665 | if (pid < 0) |
666 | die("unable to fork"); | |
f7192598 | 667 | if (!pid) { |
b10d0ec7 JH |
668 | snprintf(command, sizeof(command), "%s %s", prog, |
669 | sq_quote(path)); | |
f7192598 LT |
670 | dup2(pipefd[1][0], 0); |
671 | dup2(pipefd[0][1], 1); | |
672 | close(pipefd[0][0]); | |
673 | close(pipefd[0][1]); | |
674 | close(pipefd[1][0]); | |
675 | close(pipefd[1][1]); | |
4852f723 | 676 | if (protocol == PROTO_SSH) { |
c7c81b3a JR |
677 | const char *ssh, *ssh_basename; |
678 | ssh = getenv("GIT_SSH"); | |
679 | if (!ssh) ssh = "ssh"; | |
680 | ssh_basename = strrchr(ssh, '/'); | |
4852f723 MS |
681 | if (!ssh_basename) |
682 | ssh_basename = ssh; | |
683 | else | |
684 | ssh_basename++; | |
685 | execlp(ssh, ssh_basename, host, command, NULL); | |
686 | } | |
016fb48b MD |
687 | else { |
688 | unsetenv(ALTERNATE_DB_ENVIRONMENT); | |
689 | unsetenv(DB_ENVIRONMENT); | |
690 | unsetenv(GIT_DIR_ENVIRONMENT); | |
691 | unsetenv(GRAFT_ENVIRONMENT); | |
692 | unsetenv(INDEX_ENVIRONMENT); | |
f7192598 | 693 | execlp("sh", "sh", "-c", command, NULL); |
016fb48b | 694 | } |
f7192598 | 695 | die("exec failed"); |
016fb48b | 696 | } |
f7192598 LT |
697 | fd[0] = pipefd[0][0]; |
698 | fd[1] = pipefd[1][1]; | |
699 | close(pipefd[0][1]); | |
700 | close(pipefd[1][0]); | |
da2a95b2 SH |
701 | if (free_path) |
702 | free(path); | |
f7192598 LT |
703 | return pid; |
704 | } | |
705 | ||
706 | int finish_connect(pid_t pid) | |
707 | { | |
708 | int ret; | |
709 | ||
710 | for (;;) { | |
711 | ret = waitpid(pid, NULL, 0); | |
712 | if (!ret) | |
713 | break; | |
714 | if (errno != EINTR) | |
715 | break; | |
716 | } | |
717 | return ret; | |
718 | } |