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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" |
15a1c012 | 6 | #include "run-command.h" |
6b62816c | 7 | #include "remote.h" |
f7192598 | 8 | |
96f1e58f | 9 | static char *server_capabilities; |
211b5f9e | 10 | |
2718ff09 LT |
11 | static int check_ref(const char *name, int len, unsigned int flags) |
12 | { | |
13 | if (!flags) | |
14 | return 1; | |
15 | ||
c41e20b3 | 16 | if (len < 5 || memcmp(name, "refs/", 5)) |
2718ff09 LT |
17 | return 0; |
18 | ||
19 | /* Skip the "refs/" part */ | |
20 | name += 5; | |
21 | len -= 5; | |
22 | ||
23 | /* REF_NORMAL means that we don't want the magic fake tag refs */ | |
24 | if ((flags & REF_NORMAL) && check_ref_format(name) < 0) | |
25 | return 0; | |
26 | ||
27 | /* REF_HEADS means that we want regular branch heads */ | |
28 | if ((flags & REF_HEADS) && !memcmp(name, "heads/", 6)) | |
29 | return 1; | |
30 | ||
31 | /* REF_TAGS means that we want tags */ | |
32 | if ((flags & REF_TAGS) && !memcmp(name, "tags/", 5)) | |
33 | return 1; | |
34 | ||
35 | /* All type bits clear means that we are ok with anything */ | |
36 | return !(flags & ~REF_NORMAL); | |
37 | } | |
38 | ||
4577370e DB |
39 | int check_ref_type(const struct ref *ref, int flags) |
40 | { | |
41 | return check_ref(ref->name, strlen(ref->name), flags); | |
42 | } | |
43 | ||
d1c133f5 LT |
44 | /* |
45 | * Read all the refs from the other end | |
46 | */ | |
1a7141ff | 47 | struct ref **get_remote_heads(int in, struct ref **list, |
2718ff09 LT |
48 | int nr_match, char **match, |
49 | unsigned int flags) | |
d1c133f5 LT |
50 | { |
51 | *list = NULL; | |
52 | for (;;) { | |
53 | struct ref *ref; | |
54 | unsigned char old_sha1[20]; | |
55 | static char buffer[1000]; | |
56 | char *name; | |
211b5f9e | 57 | int len, name_len; |
d1c133f5 LT |
58 | |
59 | len = packet_read_line(in, buffer, sizeof(buffer)); | |
60 | if (!len) | |
61 | break; | |
62 | if (buffer[len-1] == '\n') | |
63 | buffer[--len] = 0; | |
64 | ||
65 | if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ') | |
66 | die("protocol error: expected sha/ref, got '%s'", buffer); | |
67 | name = buffer + 41; | |
1a7141ff | 68 | |
211b5f9e JS |
69 | name_len = strlen(name); |
70 | if (len != name_len + 41) { | |
8e0f7003 | 71 | free(server_capabilities); |
9befac47 | 72 | server_capabilities = xstrdup(name + name_len + 1); |
211b5f9e JS |
73 | } |
74 | ||
2718ff09 | 75 | if (!check_ref(name, name_len, flags)) |
cfee10a7 | 76 | continue; |
d1c133f5 LT |
77 | if (nr_match && !path_match(name, nr_match, match)) |
78 | continue; | |
90446a00 | 79 | ref = alloc_ref(name_len + 1); |
e702496e | 80 | hashcpy(ref->old_sha1, old_sha1); |
90446a00 | 81 | memcpy(ref->name, buffer + 41, name_len + 1); |
d1c133f5 LT |
82 | *list = ref; |
83 | list = &ref->next; | |
84 | } | |
85 | return list; | |
86 | } | |
87 | ||
211b5f9e JS |
88 | int server_supports(const char *feature) |
89 | { | |
1f5881bb JS |
90 | return server_capabilities && |
91 | strstr(server_capabilities, feature) != NULL; | |
211b5f9e JS |
92 | } |
93 | ||
41cb7488 LT |
94 | int get_ack(int fd, unsigned char *result_sha1) |
95 | { | |
96 | static char line[1000]; | |
97 | int len = packet_read_line(fd, line, sizeof(line)); | |
98 | ||
99 | if (!len) | |
100 | die("git-fetch-pack: expected ACK/NAK, got EOF"); | |
101 | if (line[len-1] == '\n') | |
102 | line[--len] = 0; | |
103 | if (!strcmp(line, "NAK")) | |
104 | return 0; | |
cc44c765 | 105 | if (!prefixcmp(line, "ACK ")) { |
c4c86f07 JS |
106 | if (!get_sha1_hex(line+4, result_sha1)) { |
107 | if (strstr(line+45, "continue")) | |
108 | return 2; | |
41cb7488 | 109 | return 1; |
c4c86f07 | 110 | } |
41cb7488 LT |
111 | } |
112 | die("git-fetch_pack: expected ACK/NAK, got '%s'", line); | |
113 | } | |
114 | ||
013e7c7f LT |
115 | int path_match(const char *path, int nr, char **match) |
116 | { | |
117 | int i; | |
118 | int pathlen = strlen(path); | |
119 | ||
120 | for (i = 0; i < nr; i++) { | |
121 | char *s = match[i]; | |
122 | int len = strlen(s); | |
123 | ||
124 | if (!len || len > pathlen) | |
125 | continue; | |
126 | if (memcmp(path + pathlen - len, s, len)) | |
127 | continue; | |
128 | if (pathlen > len && path[pathlen - len - 1] != '/') | |
129 | continue; | |
130 | *s = 0; | |
9546010b | 131 | return (i + 1); |
013e7c7f LT |
132 | } |
133 | return 0; | |
134 | } | |
135 | ||
2386d658 LT |
136 | enum protocol { |
137 | PROTO_LOCAL = 1, | |
138 | PROTO_SSH, | |
139 | PROTO_GIT, | |
140 | }; | |
141 | ||
142 | static enum protocol get_protocol(const char *name) | |
143 | { | |
144 | if (!strcmp(name, "ssh")) | |
145 | return PROTO_SSH; | |
146 | if (!strcmp(name, "git")) | |
147 | return PROTO_GIT; | |
c05186cc LT |
148 | if (!strcmp(name, "git+ssh")) |
149 | return PROTO_SSH; | |
150 | if (!strcmp(name, "ssh+git")) | |
151 | return PROTO_SSH; | |
72a4f4b6 LT |
152 | if (!strcmp(name, "file")) |
153 | return PROTO_LOCAL; | |
2386d658 LT |
154 | die("I don't handle protocol '%s'", name); |
155 | } | |
156 | ||
5ba88448 YH |
157 | #define STR_(s) # s |
158 | #define STR(s) STR_(s) | |
2386d658 | 159 | |
49744d63 | 160 | #ifndef NO_IPV6 |
4c505f71 | 161 | |
ba505322 AR |
162 | static const char *ai_name(const struct addrinfo *ai) |
163 | { | |
164 | static char addr[INET_ADDRSTRLEN]; | |
165 | if ( AF_INET == ai->ai_family ) { | |
166 | struct sockaddr_in *in; | |
167 | in = (struct sockaddr_in *)ai->ai_addr; | |
168 | inet_ntop(ai->ai_family, &in->sin_addr, addr, sizeof(addr)); | |
169 | } else if ( AF_INET6 == ai->ai_family ) { | |
170 | struct sockaddr_in6 *in; | |
171 | in = (struct sockaddr_in6 *)ai->ai_addr; | |
172 | inet_ntop(ai->ai_family, &in->sin6_addr, addr, sizeof(addr)); | |
173 | } else { | |
174 | strcpy(addr, "(unknown)"); | |
175 | } | |
176 | return addr; | |
177 | } | |
178 | ||
5ad312be JL |
179 | /* |
180 | * Returns a connected socket() fd, or else die()s. | |
181 | */ | |
7841ce79 | 182 | static int git_tcp_connect_sock(char *host, int flags) |
2386d658 | 183 | { |
ac3bc6c1 | 184 | int sockfd = -1, saved_errno = 0; |
5ba88448 | 185 | char *colon, *end; |
554fe20d | 186 | const char *port = STR(DEFAULT_GIT_PORT); |
5ba88448 YH |
187 | struct addrinfo hints, *ai0, *ai; |
188 | int gai; | |
ba505322 | 189 | int cnt = 0; |
5ba88448 YH |
190 | |
191 | if (host[0] == '[') { | |
192 | end = strchr(host + 1, ']'); | |
193 | if (end) { | |
194 | *end = 0; | |
195 | end++; | |
196 | host++; | |
197 | } else | |
198 | end = host; | |
199 | } else | |
200 | end = host; | |
201 | colon = strchr(end, ':'); | |
202 | ||
ce6f8e7e LT |
203 | if (colon) { |
204 | *colon = 0; | |
5ba88448 | 205 | port = colon + 1; |
608d48b2 LT |
206 | if (!*port) |
207 | port = "<none>"; | |
ce6f8e7e | 208 | } |
5ba88448 YH |
209 | |
210 | memset(&hints, 0, sizeof(hints)); | |
211 | hints.ai_socktype = SOCK_STREAM; | |
212 | hints.ai_protocol = IPPROTO_TCP; | |
213 | ||
7841ce79 MT |
214 | if (flags & CONNECT_VERBOSE) |
215 | fprintf(stderr, "Looking up %s ... ", host); | |
216 | ||
5ba88448 YH |
217 | gai = getaddrinfo(host, port, &hints, &ai); |
218 | if (gai) | |
608d48b2 | 219 | die("Unable to look up %s (port %s) (%s)", host, port, gai_strerror(gai)); |
5ba88448 | 220 | |
7841ce79 MT |
221 | if (flags & CONNECT_VERBOSE) |
222 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
223 | ||
5ba88448 | 224 | for (ai0 = ai; ai; ai = ai->ai_next) { |
5ad312be JL |
225 | sockfd = socket(ai->ai_family, |
226 | ai->ai_socktype, ai->ai_protocol); | |
ac3bc6c1 PB |
227 | if (sockfd < 0) { |
228 | saved_errno = errno; | |
5ba88448 | 229 | continue; |
ac3bc6c1 | 230 | } |
5ba88448 | 231 | if (connect(sockfd, ai->ai_addr, ai->ai_addrlen) < 0) { |
ac3bc6c1 | 232 | saved_errno = errno; |
7cbf2f24 | 233 | fprintf(stderr, "%s[%d: %s]: errno=%s\n", |
ba505322 AR |
234 | host, |
235 | cnt, | |
236 | ai_name(ai), | |
ba505322 | 237 | strerror(saved_errno)); |
5ba88448 YH |
238 | close(sockfd); |
239 | sockfd = -1; | |
240 | continue; | |
2386d658 | 241 | } |
ba505322 AR |
242 | if (flags & CONNECT_VERBOSE) |
243 | fprintf(stderr, "%s ", ai_name(ai)); | |
5ba88448 | 244 | break; |
2386d658 LT |
245 | } |
246 | ||
5ba88448 | 247 | freeaddrinfo(ai0); |
2386d658 | 248 | |
2386d658 | 249 | if (sockfd < 0) |
ac3bc6c1 | 250 | die("unable to connect a socket (%s)", strerror(saved_errno)); |
5ba88448 | 251 | |
7841ce79 MT |
252 | if (flags & CONNECT_VERBOSE) |
253 | fprintf(stderr, "done.\n"); | |
254 | ||
5ad312be | 255 | return sockfd; |
2386d658 LT |
256 | } |
257 | ||
49744d63 | 258 | #else /* NO_IPV6 */ |
4c505f71 | 259 | |
5ad312be JL |
260 | /* |
261 | * Returns a connected socket() fd, or else die()s. | |
262 | */ | |
7841ce79 | 263 | static int git_tcp_connect_sock(char *host, int flags) |
4c505f71 | 264 | { |
ac3bc6c1 | 265 | int sockfd = -1, saved_errno = 0; |
4c505f71 PA |
266 | char *colon, *end; |
267 | char *port = STR(DEFAULT_GIT_PORT), *ep; | |
268 | struct hostent *he; | |
269 | struct sockaddr_in sa; | |
270 | char **ap; | |
271 | unsigned int nport; | |
ba505322 | 272 | int cnt; |
4c505f71 PA |
273 | |
274 | if (host[0] == '[') { | |
275 | end = strchr(host + 1, ']'); | |
276 | if (end) { | |
277 | *end = 0; | |
278 | end++; | |
279 | host++; | |
280 | } else | |
281 | end = host; | |
282 | } else | |
283 | end = host; | |
284 | colon = strchr(end, ':'); | |
285 | ||
286 | if (colon) { | |
287 | *colon = 0; | |
288 | port = colon + 1; | |
289 | } | |
290 | ||
7841ce79 MT |
291 | if (flags & CONNECT_VERBOSE) |
292 | fprintf(stderr, "Looking up %s ... ", host); | |
293 | ||
4c505f71 PA |
294 | he = gethostbyname(host); |
295 | if (!he) | |
296 | die("Unable to look up %s (%s)", host, hstrerror(h_errno)); | |
297 | nport = strtoul(port, &ep, 10); | |
298 | if ( ep == port || *ep ) { | |
299 | /* Not numeric */ | |
300 | struct servent *se = getservbyname(port,"tcp"); | |
301 | if ( !se ) | |
302 | die("Unknown port %s\n", port); | |
303 | nport = se->s_port; | |
304 | } | |
305 | ||
7841ce79 MT |
306 | if (flags & CONNECT_VERBOSE) |
307 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
308 | ||
ba505322 | 309 | for (cnt = 0, ap = he->h_addr_list; *ap; ap++, cnt++) { |
4c505f71 | 310 | sockfd = socket(he->h_addrtype, SOCK_STREAM, 0); |
ac3bc6c1 PB |
311 | if (sockfd < 0) { |
312 | saved_errno = errno; | |
4c505f71 | 313 | continue; |
ac3bc6c1 | 314 | } |
4c505f71 PA |
315 | |
316 | memset(&sa, 0, sizeof sa); | |
317 | sa.sin_family = he->h_addrtype; | |
6573faff | 318 | sa.sin_port = htons(nport); |
c6164218 | 319 | memcpy(&sa.sin_addr, *ap, he->h_length); |
4c505f71 PA |
320 | |
321 | if (connect(sockfd, (struct sockaddr *)&sa, sizeof sa) < 0) { | |
ac3bc6c1 | 322 | saved_errno = errno; |
7cbf2f24 | 323 | fprintf(stderr, "%s[%d: %s]: errno=%s\n", |
ba505322 AR |
324 | host, |
325 | cnt, | |
326 | inet_ntoa(*(struct in_addr *)&sa.sin_addr), | |
ba505322 | 327 | strerror(saved_errno)); |
4c505f71 PA |
328 | close(sockfd); |
329 | sockfd = -1; | |
330 | continue; | |
331 | } | |
ba505322 AR |
332 | if (flags & CONNECT_VERBOSE) |
333 | fprintf(stderr, "%s ", | |
334 | inet_ntoa(*(struct in_addr *)&sa.sin_addr)); | |
4c505f71 PA |
335 | break; |
336 | } | |
337 | ||
338 | if (sockfd < 0) | |
ac3bc6c1 | 339 | die("unable to connect a socket (%s)", strerror(saved_errno)); |
4c505f71 | 340 | |
7841ce79 MT |
341 | if (flags & CONNECT_VERBOSE) |
342 | fprintf(stderr, "done.\n"); | |
343 | ||
5ad312be JL |
344 | return sockfd; |
345 | } | |
346 | ||
347 | #endif /* NO_IPV6 */ | |
348 | ||
349 | ||
7841ce79 | 350 | static void git_tcp_connect(int fd[2], char *host, int flags) |
5ad312be | 351 | { |
7841ce79 | 352 | int sockfd = git_tcp_connect_sock(host, flags); |
5ad312be | 353 | |
4c505f71 | 354 | fd[0] = sockfd; |
ec587fde | 355 | fd[1] = dup(sockfd); |
4c505f71 PA |
356 | } |
357 | ||
4c505f71 | 358 | |
96f1e58f DR |
359 | static char *git_proxy_command; |
360 | static const char *rhost_name; | |
e814bc4d | 361 | static int rhost_len; |
f8014776 PC |
362 | |
363 | static int git_proxy_command_options(const char *var, const char *value) | |
364 | { | |
e814bc4d | 365 | if (!strcmp(var, "core.gitproxy")) { |
c3df8568 YH |
366 | const char *for_pos; |
367 | int matchlen = -1; | |
368 | int hostlen; | |
369 | ||
e814bc4d | 370 | if (git_proxy_command) |
f8014776 | 371 | return 0; |
c64b9ad0 JH |
372 | if (!value) |
373 | return config_error_nonbool(var); | |
e814bc4d JH |
374 | /* [core] |
375 | * ;# matches www.kernel.org as well | |
376 | * gitproxy = netcatter-1 for kernel.org | |
377 | * gitproxy = netcatter-2 for sample.xz | |
378 | * gitproxy = netcatter-default | |
379 | */ | |
c3df8568 | 380 | for_pos = strstr(value, " for "); |
e814bc4d JH |
381 | if (!for_pos) |
382 | /* matches everybody */ | |
383 | matchlen = strlen(value); | |
384 | else { | |
385 | hostlen = strlen(for_pos + 5); | |
386 | if (rhost_len < hostlen) | |
387 | matchlen = -1; | |
388 | else if (!strncmp(for_pos + 5, | |
389 | rhost_name + rhost_len - hostlen, | |
390 | hostlen) && | |
391 | ((rhost_len == hostlen) || | |
392 | rhost_name[rhost_len - hostlen -1] == '.')) | |
393 | matchlen = for_pos - value; | |
394 | else | |
395 | matchlen = -1; | |
396 | } | |
397 | if (0 <= matchlen) { | |
398 | /* core.gitproxy = none for kernel.org */ | |
a6080a0a | 399 | if (matchlen == 4 && |
e814bc4d JH |
400 | !memcmp(value, "none", 4)) |
401 | matchlen = 0; | |
182af834 | 402 | git_proxy_command = xmemdupz(value, matchlen); |
f8014776 | 403 | } |
e814bc4d | 404 | return 0; |
f8014776 PC |
405 | } |
406 | ||
407 | return git_default_config(var, value); | |
408 | } | |
409 | ||
e814bc4d | 410 | static int git_use_proxy(const char *host) |
f8014776 | 411 | { |
e814bc4d JH |
412 | rhost_name = host; |
413 | rhost_len = strlen(host); | |
f8014776 PC |
414 | git_proxy_command = getenv("GIT_PROXY_COMMAND"); |
415 | git_config(git_proxy_command_options); | |
e814bc4d JH |
416 | rhost_name = NULL; |
417 | return (git_proxy_command && *git_proxy_command); | |
f8014776 PC |
418 | } |
419 | ||
c78963d2 | 420 | static void git_proxy_connect(int fd[2], char *host) |
f8014776 | 421 | { |
554fe20d | 422 | const char *port = STR(DEFAULT_GIT_PORT); |
f8014776 | 423 | char *colon, *end; |
15a1c012 SP |
424 | const char *argv[4]; |
425 | struct child_process proxy; | |
f8014776 PC |
426 | |
427 | if (host[0] == '[') { | |
428 | end = strchr(host + 1, ']'); | |
429 | if (end) { | |
430 | *end = 0; | |
431 | end++; | |
432 | host++; | |
433 | } else | |
434 | end = host; | |
435 | } else | |
436 | end = host; | |
437 | colon = strchr(end, ':'); | |
438 | ||
439 | if (colon) { | |
440 | *colon = 0; | |
441 | port = colon + 1; | |
442 | } | |
443 | ||
15a1c012 SP |
444 | argv[0] = git_proxy_command; |
445 | argv[1] = host; | |
446 | argv[2] = port; | |
447 | argv[3] = NULL; | |
448 | memset(&proxy, 0, sizeof(proxy)); | |
449 | proxy.argv = argv; | |
450 | proxy.in = -1; | |
451 | proxy.out = -1; | |
452 | if (start_command(&proxy)) | |
453 | die("cannot start proxy %s", argv[0]); | |
454 | fd[0] = proxy.out; /* read from proxy stdout */ | |
455 | fd[1] = proxy.in; /* write to proxy stdin */ | |
f8014776 PC |
456 | } |
457 | ||
0f503d77 CC |
458 | #define MAX_CMD_LEN 1024 |
459 | ||
2e776665 LT |
460 | char *get_port(char *host) |
461 | { | |
462 | char *end; | |
463 | char *p = strchr(host, ':'); | |
464 | ||
465 | if (p) { | |
466 | strtol(p+1, &end, 10); | |
467 | if (*end == '\0') { | |
468 | *p = '\0'; | |
469 | return p+1; | |
470 | } | |
471 | } | |
472 | ||
473 | return NULL; | |
474 | } | |
475 | ||
fb32c917 JS |
476 | static struct child_process no_fork; |
477 | ||
f7192598 | 478 | /* |
fb32c917 JS |
479 | * This returns a dummy child_process if the transport protocol does not |
480 | * need fork(2), or a struct child_process object if it does. Once done, | |
481 | * finish the connection with finish_connect() with the value returned from | |
482 | * this function (it is safe to call finish_connect() with NULL to support | |
483 | * the former case). | |
f42a5c4e | 484 | * |
fb32c917 JS |
485 | * If it returns, the connect is successful; it just dies on errors (this |
486 | * will hopefully be changed in a libification effort, to return NULL when | |
487 | * the connection failed). | |
f7192598 | 488 | */ |
4577370e | 489 | struct child_process *git_connect(int fd[2], const char *url_orig, |
98158e9c | 490 | const char *prog, int flags) |
f7192598 | 491 | { |
4577370e | 492 | char *url = xstrdup(url_orig); |
faea9ccb | 493 | char *host, *path = url; |
356bece0 YH |
494 | char *end; |
495 | int c; | |
98158e9c | 496 | struct child_process *conn; |
faea9ccb | 497 | enum protocol protocol = PROTO_LOCAL; |
da2a95b2 | 498 | int free_path = 0; |
2e776665 | 499 | char *port = NULL; |
f364cb88 JS |
500 | const char **arg; |
501 | struct strbuf cmd; | |
faea9ccb | 502 | |
f0b7367c JH |
503 | /* Without this we cannot rely on waitpid() to tell |
504 | * what happened to our children. | |
505 | */ | |
506 | signal(SIGCHLD, SIG_DFL); | |
507 | ||
faea9ccb AE |
508 | host = strstr(url, "://"); |
509 | if(host) { | |
510 | *host = '\0'; | |
511 | protocol = get_protocol(url); | |
512 | host += 3; | |
356bece0 YH |
513 | c = '/'; |
514 | } else { | |
f7192598 | 515 | host = url; |
356bece0 YH |
516 | c = ':'; |
517 | } | |
518 | ||
519 | if (host[0] == '[') { | |
520 | end = strchr(host + 1, ']'); | |
521 | if (end) { | |
522 | *end = 0; | |
523 | end++; | |
524 | host++; | |
525 | } else | |
526 | end = host; | |
527 | } else | |
528 | end = host; | |
529 | ||
530 | path = strchr(end, c); | |
72a4f4b6 LT |
531 | if (path) { |
532 | if (c == ':') { | |
faea9ccb | 533 | protocol = PROTO_SSH; |
356bece0 | 534 | *path++ = '\0'; |
72a4f4b6 LT |
535 | } |
536 | } else | |
537 | path = end; | |
2386d658 | 538 | |
faea9ccb AE |
539 | if (!path || !*path) |
540 | die("No path specified. See 'man git-pull' for valid url syntax"); | |
541 | ||
542 | /* | |
543 | * null-terminate hostname and point path to ~ for URL's like this: | |
544 | * ssh://host.xz/~user/repo | |
545 | */ | |
546 | if (protocol != PROTO_LOCAL && host != url) { | |
547 | char *ptr = path; | |
548 | if (path[1] == '~') | |
549 | path++; | |
da2a95b2 | 550 | else { |
9befac47 | 551 | path = xstrdup(ptr); |
da2a95b2 SH |
552 | free_path = 1; |
553 | } | |
faea9ccb AE |
554 | |
555 | *ptr = '\0'; | |
556 | } | |
557 | ||
2e776665 LT |
558 | /* |
559 | * Add support for ssh port: ssh://host.xy:<port>/... | |
560 | */ | |
561 | if (protocol == PROTO_SSH && host != url) | |
562 | port = get_port(host); | |
563 | ||
f8014776 | 564 | if (protocol == PROTO_GIT) { |
5ad312be JL |
565 | /* These underlying connection commands die() if they |
566 | * cannot connect. | |
567 | */ | |
9befac47 | 568 | char *target_host = xstrdup(host); |
e814bc4d | 569 | if (git_use_proxy(host)) |
c78963d2 | 570 | git_proxy_connect(fd, host); |
da2a95b2 | 571 | else |
7841ce79 | 572 | git_tcp_connect(fd, host, flags); |
5ad312be JL |
573 | /* |
574 | * Separate original protocol components prog and path | |
575 | * from extended components with a NUL byte. | |
576 | */ | |
577 | packet_write(fd[1], | |
578 | "%s %s%chost=%s%c", | |
579 | prog, path, 0, | |
580 | target_host, 0); | |
581 | free(target_host); | |
4577370e | 582 | free(url); |
da2a95b2 SH |
583 | if (free_path) |
584 | free(path); | |
fb32c917 | 585 | return &no_fork; |
f8014776 | 586 | } |
2386d658 | 587 | |
98158e9c | 588 | conn = xcalloc(1, sizeof(*conn)); |
2e776665 | 589 | |
f364cb88 JS |
590 | strbuf_init(&cmd, MAX_CMD_LEN); |
591 | strbuf_addstr(&cmd, prog); | |
592 | strbuf_addch(&cmd, ' '); | |
593 | sq_quote_buf(&cmd, path); | |
594 | if (cmd.len >= MAX_CMD_LEN) | |
595 | die("command line too long"); | |
596 | ||
597 | conn->in = conn->out = -1; | |
598 | conn->argv = arg = xcalloc(6, sizeof(*arg)); | |
599 | if (protocol == PROTO_SSH) { | |
600 | const char *ssh = getenv("GIT_SSH"); | |
601 | if (!ssh) ssh = "ssh"; | |
602 | ||
603 | *arg++ = ssh; | |
604 | if (port) { | |
605 | *arg++ = "-p"; | |
606 | *arg++ = port; | |
4852f723 | 607 | } |
f364cb88 JS |
608 | *arg++ = host; |
609 | } | |
610 | else { | |
611 | /* remove these from the environment */ | |
612 | const char *env[] = { | |
613 | ALTERNATE_DB_ENVIRONMENT, | |
614 | DB_ENVIRONMENT, | |
615 | GIT_DIR_ENVIRONMENT, | |
616 | GIT_WORK_TREE_ENVIRONMENT, | |
617 | GRAFT_ENVIRONMENT, | |
618 | INDEX_ENVIRONMENT, | |
619 | NULL | |
620 | }; | |
621 | conn->env = env; | |
622 | *arg++ = "sh"; | |
623 | *arg++ = "-c"; | |
016fb48b | 624 | } |
f364cb88 JS |
625 | *arg++ = cmd.buf; |
626 | *arg = NULL; | |
627 | ||
628 | if (start_command(conn)) | |
629 | die("unable to fork"); | |
630 | ||
631 | fd[0] = conn->out; /* read from child's stdout */ | |
632 | fd[1] = conn->in; /* write to child's stdin */ | |
633 | strbuf_release(&cmd); | |
4577370e | 634 | free(url); |
da2a95b2 SH |
635 | if (free_path) |
636 | free(path); | |
98158e9c | 637 | return conn; |
f7192598 LT |
638 | } |
639 | ||
98158e9c | 640 | int finish_connect(struct child_process *conn) |
f7192598 | 641 | { |
f364cb88 | 642 | int code; |
fb32c917 | 643 | if (!conn || conn == &no_fork) |
f42a5c4e FBH |
644 | return 0; |
645 | ||
f364cb88 JS |
646 | code = finish_command(conn); |
647 | free(conn->argv); | |
98158e9c | 648 | free(conn); |
f364cb88 | 649 | return code; |
f7192598 | 650 | } |