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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" |
9d2e9420 | 8 | #include "url.h" |
f7192598 | 9 | |
96f1e58f | 10 | static char *server_capabilities; |
211b5f9e | 11 | |
2718ff09 LT |
12 | static int check_ref(const char *name, int len, unsigned int flags) |
13 | { | |
14 | if (!flags) | |
15 | return 1; | |
16 | ||
c41e20b3 | 17 | if (len < 5 || memcmp(name, "refs/", 5)) |
2718ff09 LT |
18 | return 0; |
19 | ||
20 | /* Skip the "refs/" part */ | |
21 | name += 5; | |
22 | len -= 5; | |
23 | ||
24 | /* REF_NORMAL means that we don't want the magic fake tag refs */ | |
8d9c5010 | 25 | if ((flags & REF_NORMAL) && check_refname_format(name, 0)) |
2718ff09 LT |
26 | return 0; |
27 | ||
28 | /* REF_HEADS means that we want regular branch heads */ | |
29 | if ((flags & REF_HEADS) && !memcmp(name, "heads/", 6)) | |
30 | return 1; | |
31 | ||
32 | /* REF_TAGS means that we want tags */ | |
33 | if ((flags & REF_TAGS) && !memcmp(name, "tags/", 5)) | |
34 | return 1; | |
35 | ||
36 | /* All type bits clear means that we are ok with anything */ | |
37 | return !(flags & ~REF_NORMAL); | |
38 | } | |
39 | ||
4577370e DB |
40 | int check_ref_type(const struct ref *ref, int flags) |
41 | { | |
42 | return check_ref(ref->name, strlen(ref->name), flags); | |
43 | } | |
44 | ||
40c155ff JH |
45 | static void add_extra_have(struct extra_have_objects *extra, unsigned char *sha1) |
46 | { | |
47 | ALLOC_GROW(extra->array, extra->nr + 1, extra->alloc); | |
48 | hashcpy(&(extra->array[extra->nr][0]), sha1); | |
49 | extra->nr++; | |
50 | } | |
51 | ||
d1c133f5 LT |
52 | /* |
53 | * Read all the refs from the other end | |
54 | */ | |
1a7141ff | 55 | struct ref **get_remote_heads(int in, struct ref **list, |
40c155ff JH |
56 | unsigned int flags, |
57 | struct extra_have_objects *extra_have) | |
d1c133f5 LT |
58 | { |
59 | *list = NULL; | |
60 | for (;;) { | |
61 | struct ref *ref; | |
62 | unsigned char old_sha1[20]; | |
63 | static char buffer[1000]; | |
64 | char *name; | |
211b5f9e | 65 | int len, name_len; |
d1c133f5 LT |
66 | |
67 | len = packet_read_line(in, buffer, sizeof(buffer)); | |
68 | if (!len) | |
69 | break; | |
70 | if (buffer[len-1] == '\n') | |
71 | buffer[--len] = 0; | |
72 | ||
a8073289 TPW |
73 | if (len > 4 && !prefixcmp(buffer, "ERR ")) |
74 | die("remote error: %s", buffer + 4); | |
75 | ||
d1c133f5 LT |
76 | if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ') |
77 | die("protocol error: expected sha/ref, got '%s'", buffer); | |
78 | name = buffer + 41; | |
1a7141ff | 79 | |
211b5f9e JS |
80 | name_len = strlen(name); |
81 | if (len != name_len + 41) { | |
8e0f7003 | 82 | free(server_capabilities); |
9befac47 | 83 | server_capabilities = xstrdup(name + name_len + 1); |
211b5f9e JS |
84 | } |
85 | ||
40c155ff JH |
86 | if (extra_have && |
87 | name_len == 5 && !memcmp(".have", name, 5)) { | |
88 | add_extra_have(extra_have, old_sha1); | |
89 | continue; | |
90 | } | |
91 | ||
2718ff09 | 92 | if (!check_ref(name, name_len, flags)) |
cfee10a7 | 93 | continue; |
59c69c0c | 94 | ref = alloc_ref(buffer + 41); |
e702496e | 95 | hashcpy(ref->old_sha1, old_sha1); |
d1c133f5 LT |
96 | *list = ref; |
97 | list = &ref->next; | |
98 | } | |
99 | return list; | |
100 | } | |
101 | ||
211b5f9e JS |
102 | int server_supports(const char *feature) |
103 | { | |
1f5881bb JS |
104 | return server_capabilities && |
105 | strstr(server_capabilities, feature) != NULL; | |
211b5f9e JS |
106 | } |
107 | ||
2386d658 LT |
108 | enum protocol { |
109 | PROTO_LOCAL = 1, | |
110 | PROTO_SSH, | |
4b05548f | 111 | PROTO_GIT |
2386d658 LT |
112 | }; |
113 | ||
114 | static enum protocol get_protocol(const char *name) | |
115 | { | |
116 | if (!strcmp(name, "ssh")) | |
117 | return PROTO_SSH; | |
118 | if (!strcmp(name, "git")) | |
119 | return PROTO_GIT; | |
c05186cc LT |
120 | if (!strcmp(name, "git+ssh")) |
121 | return PROTO_SSH; | |
122 | if (!strcmp(name, "ssh+git")) | |
123 | return PROTO_SSH; | |
72a4f4b6 LT |
124 | if (!strcmp(name, "file")) |
125 | return PROTO_LOCAL; | |
2386d658 LT |
126 | die("I don't handle protocol '%s'", name); |
127 | } | |
128 | ||
5ba88448 YH |
129 | #define STR_(s) # s |
130 | #define STR(s) STR_(s) | |
2386d658 | 131 | |
72a534da ML |
132 | static void get_host_and_port(char **host, const char **port) |
133 | { | |
134 | char *colon, *end; | |
135 | ||
136 | if (*host[0] == '[') { | |
137 | end = strchr(*host + 1, ']'); | |
138 | if (end) { | |
139 | *end = 0; | |
140 | end++; | |
141 | (*host)++; | |
142 | } else | |
143 | end = *host; | |
144 | } else | |
145 | end = *host; | |
146 | colon = strchr(end, ':'); | |
147 | ||
148 | if (colon) { | |
149 | *colon = 0; | |
150 | *port = colon + 1; | |
151 | } | |
152 | } | |
153 | ||
e47a8583 EW |
154 | static void enable_keepalive(int sockfd) |
155 | { | |
156 | int ka = 1; | |
157 | ||
158 | if (setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &ka, sizeof(ka)) < 0) | |
159 | fprintf(stderr, "unable to set SO_KEEPALIVE on socket: %s\n", | |
160 | strerror(errno)); | |
161 | } | |
162 | ||
49744d63 | 163 | #ifndef NO_IPV6 |
4c505f71 | 164 | |
ba505322 AR |
165 | static const char *ai_name(const struct addrinfo *ai) |
166 | { | |
785a9857 BK |
167 | static char addr[NI_MAXHOST]; |
168 | if (getnameinfo(ai->ai_addr, ai->ai_addrlen, addr, sizeof(addr), NULL, 0, | |
169 | NI_NUMERICHOST) != 0) | |
ba505322 | 170 | strcpy(addr, "(unknown)"); |
785a9857 | 171 | |
ba505322 AR |
172 | return addr; |
173 | } | |
174 | ||
5ad312be JL |
175 | /* |
176 | * Returns a connected socket() fd, or else die()s. | |
177 | */ | |
7841ce79 | 178 | static int git_tcp_connect_sock(char *host, int flags) |
2386d658 | 179 | { |
63a995b6 DZ |
180 | struct strbuf error_message = STRBUF_INIT; |
181 | int sockfd = -1; | |
554fe20d | 182 | const char *port = STR(DEFAULT_GIT_PORT); |
5ba88448 YH |
183 | struct addrinfo hints, *ai0, *ai; |
184 | int gai; | |
ba505322 | 185 | int cnt = 0; |
5ba88448 | 186 | |
72a534da ML |
187 | get_host_and_port(&host, &port); |
188 | if (!*port) | |
189 | port = "<none>"; | |
5ba88448 YH |
190 | |
191 | memset(&hints, 0, sizeof(hints)); | |
192 | hints.ai_socktype = SOCK_STREAM; | |
193 | hints.ai_protocol = IPPROTO_TCP; | |
194 | ||
7841ce79 MT |
195 | if (flags & CONNECT_VERBOSE) |
196 | fprintf(stderr, "Looking up %s ... ", host); | |
197 | ||
5ba88448 YH |
198 | gai = getaddrinfo(host, port, &hints, &ai); |
199 | if (gai) | |
608d48b2 | 200 | die("Unable to look up %s (port %s) (%s)", host, port, gai_strerror(gai)); |
5ba88448 | 201 | |
7841ce79 MT |
202 | if (flags & CONNECT_VERBOSE) |
203 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
204 | ||
e08afecd | 205 | for (ai0 = ai; ai; ai = ai->ai_next, cnt++) { |
5ad312be JL |
206 | sockfd = socket(ai->ai_family, |
207 | ai->ai_socktype, ai->ai_protocol); | |
63a995b6 DZ |
208 | if ((sockfd < 0) || |
209 | (connect(sockfd, ai->ai_addr, ai->ai_addrlen) < 0)) { | |
210 | strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n", | |
211 | host, cnt, ai_name(ai), strerror(errno)); | |
212 | if (0 <= sockfd) | |
213 | close(sockfd); | |
5ba88448 YH |
214 | sockfd = -1; |
215 | continue; | |
2386d658 | 216 | } |
ba505322 AR |
217 | if (flags & CONNECT_VERBOSE) |
218 | fprintf(stderr, "%s ", ai_name(ai)); | |
5ba88448 | 219 | break; |
2386d658 LT |
220 | } |
221 | ||
5ba88448 | 222 | freeaddrinfo(ai0); |
2386d658 | 223 | |
2386d658 | 224 | if (sockfd < 0) |
63a995b6 | 225 | die("unable to connect to %s:\n%s", host, error_message.buf); |
5ba88448 | 226 | |
e47a8583 EW |
227 | enable_keepalive(sockfd); |
228 | ||
7841ce79 MT |
229 | if (flags & CONNECT_VERBOSE) |
230 | fprintf(stderr, "done.\n"); | |
231 | ||
63a995b6 DZ |
232 | strbuf_release(&error_message); |
233 | ||
5ad312be | 234 | return sockfd; |
2386d658 LT |
235 | } |
236 | ||
49744d63 | 237 | #else /* NO_IPV6 */ |
4c505f71 | 238 | |
5ad312be JL |
239 | /* |
240 | * Returns a connected socket() fd, or else die()s. | |
241 | */ | |
7841ce79 | 242 | static int git_tcp_connect_sock(char *host, int flags) |
4c505f71 | 243 | { |
7203a2d1 EFL |
244 | struct strbuf error_message = STRBUF_INIT; |
245 | int sockfd = -1; | |
72a534da ML |
246 | const char *port = STR(DEFAULT_GIT_PORT); |
247 | char *ep; | |
4c505f71 PA |
248 | struct hostent *he; |
249 | struct sockaddr_in sa; | |
250 | char **ap; | |
251 | unsigned int nport; | |
ba505322 | 252 | int cnt; |
4c505f71 | 253 | |
72a534da | 254 | get_host_and_port(&host, &port); |
4c505f71 | 255 | |
7841ce79 MT |
256 | if (flags & CONNECT_VERBOSE) |
257 | fprintf(stderr, "Looking up %s ... ", host); | |
258 | ||
4c505f71 PA |
259 | he = gethostbyname(host); |
260 | if (!he) | |
261 | die("Unable to look up %s (%s)", host, hstrerror(h_errno)); | |
262 | nport = strtoul(port, &ep, 10); | |
263 | if ( ep == port || *ep ) { | |
264 | /* Not numeric */ | |
265 | struct servent *se = getservbyname(port,"tcp"); | |
266 | if ( !se ) | |
d7530708 | 267 | die("Unknown port %s", port); |
4c505f71 PA |
268 | nport = se->s_port; |
269 | } | |
270 | ||
7841ce79 MT |
271 | if (flags & CONNECT_VERBOSE) |
272 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
273 | ||
ba505322 | 274 | for (cnt = 0, ap = he->h_addr_list; *ap; ap++, cnt++) { |
4c505f71 PA |
275 | memset(&sa, 0, sizeof sa); |
276 | sa.sin_family = he->h_addrtype; | |
6573faff | 277 | sa.sin_port = htons(nport); |
c6164218 | 278 | memcpy(&sa.sin_addr, *ap, he->h_length); |
4c505f71 | 279 | |
7203a2d1 EFL |
280 | sockfd = socket(he->h_addrtype, SOCK_STREAM, 0); |
281 | if ((sockfd < 0) || | |
282 | connect(sockfd, (struct sockaddr *)&sa, sizeof sa) < 0) { | |
283 | strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n", | |
ba505322 AR |
284 | host, |
285 | cnt, | |
286 | inet_ntoa(*(struct in_addr *)&sa.sin_addr), | |
7203a2d1 EFL |
287 | strerror(errno)); |
288 | if (0 <= sockfd) | |
289 | close(sockfd); | |
4c505f71 PA |
290 | sockfd = -1; |
291 | continue; | |
292 | } | |
ba505322 AR |
293 | if (flags & CONNECT_VERBOSE) |
294 | fprintf(stderr, "%s ", | |
295 | inet_ntoa(*(struct in_addr *)&sa.sin_addr)); | |
4c505f71 PA |
296 | break; |
297 | } | |
298 | ||
299 | if (sockfd < 0) | |
7203a2d1 | 300 | die("unable to connect to %s:\n%s", host, error_message.buf); |
4c505f71 | 301 | |
e47a8583 EW |
302 | enable_keepalive(sockfd); |
303 | ||
7841ce79 MT |
304 | if (flags & CONNECT_VERBOSE) |
305 | fprintf(stderr, "done.\n"); | |
306 | ||
5ad312be JL |
307 | return sockfd; |
308 | } | |
309 | ||
310 | #endif /* NO_IPV6 */ | |
311 | ||
312 | ||
7841ce79 | 313 | static void git_tcp_connect(int fd[2], char *host, int flags) |
5ad312be | 314 | { |
7841ce79 | 315 | int sockfd = git_tcp_connect_sock(host, flags); |
5ad312be | 316 | |
4c505f71 | 317 | fd[0] = sockfd; |
ec587fde | 318 | fd[1] = dup(sockfd); |
4c505f71 PA |
319 | } |
320 | ||
4c505f71 | 321 | |
96f1e58f | 322 | static char *git_proxy_command; |
f8014776 | 323 | |
ef90d6d4 JS |
324 | static int git_proxy_command_options(const char *var, const char *value, |
325 | void *cb) | |
f8014776 | 326 | { |
e814bc4d | 327 | if (!strcmp(var, "core.gitproxy")) { |
c3df8568 YH |
328 | const char *for_pos; |
329 | int matchlen = -1; | |
330 | int hostlen; | |
15112c95 EFL |
331 | const char *rhost_name = cb; |
332 | int rhost_len = strlen(rhost_name); | |
c3df8568 | 333 | |
e814bc4d | 334 | if (git_proxy_command) |
f8014776 | 335 | return 0; |
c64b9ad0 JH |
336 | if (!value) |
337 | return config_error_nonbool(var); | |
e814bc4d JH |
338 | /* [core] |
339 | * ;# matches www.kernel.org as well | |
340 | * gitproxy = netcatter-1 for kernel.org | |
341 | * gitproxy = netcatter-2 for sample.xz | |
342 | * gitproxy = netcatter-default | |
343 | */ | |
c3df8568 | 344 | for_pos = strstr(value, " for "); |
e814bc4d JH |
345 | if (!for_pos) |
346 | /* matches everybody */ | |
347 | matchlen = strlen(value); | |
348 | else { | |
349 | hostlen = strlen(for_pos + 5); | |
350 | if (rhost_len < hostlen) | |
351 | matchlen = -1; | |
352 | else if (!strncmp(for_pos + 5, | |
353 | rhost_name + rhost_len - hostlen, | |
354 | hostlen) && | |
355 | ((rhost_len == hostlen) || | |
356 | rhost_name[rhost_len - hostlen -1] == '.')) | |
357 | matchlen = for_pos - value; | |
358 | else | |
359 | matchlen = -1; | |
360 | } | |
361 | if (0 <= matchlen) { | |
362 | /* core.gitproxy = none for kernel.org */ | |
a6080a0a | 363 | if (matchlen == 4 && |
e814bc4d JH |
364 | !memcmp(value, "none", 4)) |
365 | matchlen = 0; | |
182af834 | 366 | git_proxy_command = xmemdupz(value, matchlen); |
f8014776 | 367 | } |
e814bc4d | 368 | return 0; |
f8014776 PC |
369 | } |
370 | ||
ef90d6d4 | 371 | return git_default_config(var, value, cb); |
f8014776 PC |
372 | } |
373 | ||
e814bc4d | 374 | static int git_use_proxy(const char *host) |
f8014776 PC |
375 | { |
376 | git_proxy_command = getenv("GIT_PROXY_COMMAND"); | |
15112c95 | 377 | git_config(git_proxy_command_options, (void*)host); |
e814bc4d | 378 | return (git_proxy_command && *git_proxy_command); |
f8014776 PC |
379 | } |
380 | ||
5cbf8246 | 381 | static struct child_process *git_proxy_connect(int fd[2], char *host) |
f8014776 | 382 | { |
554fe20d | 383 | const char *port = STR(DEFAULT_GIT_PORT); |
5cbf8246 JK |
384 | const char **argv; |
385 | struct child_process *proxy; | |
f8014776 | 386 | |
72a534da | 387 | get_host_and_port(&host, &port); |
f8014776 | 388 | |
5cbf8246 | 389 | argv = xmalloc(sizeof(*argv) * 4); |
15a1c012 SP |
390 | argv[0] = git_proxy_command; |
391 | argv[1] = host; | |
392 | argv[2] = port; | |
393 | argv[3] = NULL; | |
5cbf8246 JK |
394 | proxy = xcalloc(1, sizeof(*proxy)); |
395 | proxy->argv = argv; | |
396 | proxy->in = -1; | |
397 | proxy->out = -1; | |
398 | if (start_command(proxy)) | |
15a1c012 | 399 | die("cannot start proxy %s", argv[0]); |
5cbf8246 JK |
400 | fd[0] = proxy->out; /* read from proxy stdout */ |
401 | fd[1] = proxy->in; /* write to proxy stdin */ | |
402 | return proxy; | |
f8014776 PC |
403 | } |
404 | ||
0f503d77 CC |
405 | #define MAX_CMD_LEN 1024 |
406 | ||
2af202be | 407 | static char *get_port(char *host) |
2e776665 LT |
408 | { |
409 | char *end; | |
410 | char *p = strchr(host, ':'); | |
411 | ||
412 | if (p) { | |
8f148253 RS |
413 | long port = strtol(p + 1, &end, 10); |
414 | if (end != p + 1 && *end == '\0' && 0 <= port && port < 65536) { | |
2e776665 LT |
415 | *p = '\0'; |
416 | return p+1; | |
417 | } | |
418 | } | |
419 | ||
420 | return NULL; | |
421 | } | |
422 | ||
fb32c917 JS |
423 | static struct child_process no_fork; |
424 | ||
f7192598 | 425 | /* |
fb32c917 JS |
426 | * This returns a dummy child_process if the transport protocol does not |
427 | * need fork(2), or a struct child_process object if it does. Once done, | |
428 | * finish the connection with finish_connect() with the value returned from | |
429 | * this function (it is safe to call finish_connect() with NULL to support | |
430 | * the former case). | |
f42a5c4e | 431 | * |
fb32c917 JS |
432 | * If it returns, the connect is successful; it just dies on errors (this |
433 | * will hopefully be changed in a libification effort, to return NULL when | |
434 | * the connection failed). | |
f7192598 | 435 | */ |
4577370e | 436 | struct child_process *git_connect(int fd[2], const char *url_orig, |
98158e9c | 437 | const char *prog, int flags) |
f7192598 | 438 | { |
9d2e9420 | 439 | char *url; |
8e76bf3f | 440 | char *host, *path; |
356bece0 YH |
441 | char *end; |
442 | int c; | |
5cbf8246 | 443 | struct child_process *conn = &no_fork; |
faea9ccb | 444 | enum protocol protocol = PROTO_LOCAL; |
da2a95b2 | 445 | int free_path = 0; |
2e776665 | 446 | char *port = NULL; |
f364cb88 JS |
447 | const char **arg; |
448 | struct strbuf cmd; | |
faea9ccb | 449 | |
f0b7367c JH |
450 | /* Without this we cannot rely on waitpid() to tell |
451 | * what happened to our children. | |
452 | */ | |
453 | signal(SIGCHLD, SIG_DFL); | |
454 | ||
9d2e9420 JK |
455 | if (is_url(url_orig)) |
456 | url = url_decode(url_orig); | |
457 | else | |
458 | url = xstrdup(url_orig); | |
459 | ||
faea9ccb | 460 | host = strstr(url, "://"); |
eeefa7c9 | 461 | if (host) { |
faea9ccb AE |
462 | *host = '\0'; |
463 | protocol = get_protocol(url); | |
464 | host += 3; | |
356bece0 YH |
465 | c = '/'; |
466 | } else { | |
f7192598 | 467 | host = url; |
356bece0 YH |
468 | c = ':'; |
469 | } | |
470 | ||
9aa5053d IL |
471 | /* |
472 | * Don't do destructive transforms with git:// as that | |
9517e6b8 | 473 | * protocol code does '[]' unwrapping of its own. |
9aa5053d | 474 | */ |
356bece0 YH |
475 | if (host[0] == '[') { |
476 | end = strchr(host + 1, ']'); | |
477 | if (end) { | |
9aa5053d IL |
478 | if (protocol != PROTO_GIT) { |
479 | *end = 0; | |
480 | host++; | |
481 | } | |
356bece0 | 482 | end++; |
356bece0 YH |
483 | } else |
484 | end = host; | |
485 | } else | |
486 | end = host; | |
487 | ||
488 | path = strchr(end, c); | |
be501813 | 489 | if (path && !has_dos_drive_prefix(end)) { |
72a4f4b6 | 490 | if (c == ':') { |
faea9ccb | 491 | protocol = PROTO_SSH; |
356bece0 | 492 | *path++ = '\0'; |
72a4f4b6 LT |
493 | } |
494 | } else | |
495 | path = end; | |
2386d658 | 496 | |
faea9ccb AE |
497 | if (!path || !*path) |
498 | die("No path specified. See 'man git-pull' for valid url syntax"); | |
499 | ||
500 | /* | |
501 | * null-terminate hostname and point path to ~ for URL's like this: | |
502 | * ssh://host.xz/~user/repo | |
503 | */ | |
504 | if (protocol != PROTO_LOCAL && host != url) { | |
505 | char *ptr = path; | |
506 | if (path[1] == '~') | |
507 | path++; | |
da2a95b2 | 508 | else { |
9befac47 | 509 | path = xstrdup(ptr); |
da2a95b2 SH |
510 | free_path = 1; |
511 | } | |
faea9ccb AE |
512 | |
513 | *ptr = '\0'; | |
514 | } | |
515 | ||
2e776665 LT |
516 | /* |
517 | * Add support for ssh port: ssh://host.xy:<port>/... | |
518 | */ | |
519 | if (protocol == PROTO_SSH && host != url) | |
520 | port = get_port(host); | |
521 | ||
f8014776 | 522 | if (protocol == PROTO_GIT) { |
5ad312be JL |
523 | /* These underlying connection commands die() if they |
524 | * cannot connect. | |
525 | */ | |
9befac47 | 526 | char *target_host = xstrdup(host); |
e814bc4d | 527 | if (git_use_proxy(host)) |
5cbf8246 | 528 | conn = git_proxy_connect(fd, host); |
da2a95b2 | 529 | else |
7841ce79 | 530 | git_tcp_connect(fd, host, flags); |
5ad312be JL |
531 | /* |
532 | * Separate original protocol components prog and path | |
73bb33a9 SP |
533 | * from extended host header with a NUL byte. |
534 | * | |
535 | * Note: Do not add any other headers here! Doing so | |
536 | * will cause older git-daemon servers to crash. | |
5ad312be JL |
537 | */ |
538 | packet_write(fd[1], | |
539 | "%s %s%chost=%s%c", | |
540 | prog, path, 0, | |
541 | target_host, 0); | |
542 | free(target_host); | |
4577370e | 543 | free(url); |
da2a95b2 SH |
544 | if (free_path) |
545 | free(path); | |
5cbf8246 | 546 | return conn; |
f8014776 | 547 | } |
2386d658 | 548 | |
98158e9c | 549 | conn = xcalloc(1, sizeof(*conn)); |
2e776665 | 550 | |
f364cb88 JS |
551 | strbuf_init(&cmd, MAX_CMD_LEN); |
552 | strbuf_addstr(&cmd, prog); | |
553 | strbuf_addch(&cmd, ' '); | |
554 | sq_quote_buf(&cmd, path); | |
555 | if (cmd.len >= MAX_CMD_LEN) | |
556 | die("command line too long"); | |
557 | ||
558 | conn->in = conn->out = -1; | |
36ad53ff | 559 | conn->argv = arg = xcalloc(7, sizeof(*arg)); |
f364cb88 JS |
560 | if (protocol == PROTO_SSH) { |
561 | const char *ssh = getenv("GIT_SSH"); | |
36ad53ff | 562 | int putty = ssh && strcasestr(ssh, "plink"); |
f364cb88 JS |
563 | if (!ssh) ssh = "ssh"; |
564 | ||
565 | *arg++ = ssh; | |
36ad53ff EY |
566 | if (putty && !strcasestr(ssh, "tortoiseplink")) |
567 | *arg++ = "-batch"; | |
f364cb88 | 568 | if (port) { |
36ad53ff EY |
569 | /* P is for PuTTY, p is for OpenSSH */ |
570 | *arg++ = putty ? "-P" : "-p"; | |
f364cb88 | 571 | *arg++ = port; |
4852f723 | 572 | } |
f364cb88 JS |
573 | *arg++ = host; |
574 | } | |
575 | else { | |
48a7c1c4 GB |
576 | /* remove repo-local variables from the environment */ |
577 | conn->env = local_repo_env; | |
4cfb2a44 | 578 | conn->use_shell = 1; |
016fb48b | 579 | } |
f364cb88 JS |
580 | *arg++ = cmd.buf; |
581 | *arg = NULL; | |
582 | ||
583 | if (start_command(conn)) | |
584 | die("unable to fork"); | |
585 | ||
586 | fd[0] = conn->out; /* read from child's stdout */ | |
587 | fd[1] = conn->in; /* write to child's stdin */ | |
588 | strbuf_release(&cmd); | |
4577370e | 589 | free(url); |
da2a95b2 SH |
590 | if (free_path) |
591 | free(path); | |
98158e9c | 592 | return conn; |
f7192598 LT |
593 | } |
594 | ||
7ffe853b JK |
595 | int git_connection_is_socket(struct child_process *conn) |
596 | { | |
597 | return conn == &no_fork; | |
598 | } | |
599 | ||
98158e9c | 600 | int finish_connect(struct child_process *conn) |
f7192598 | 601 | { |
f364cb88 | 602 | int code; |
7ffe853b | 603 | if (!conn || git_connection_is_socket(conn)) |
f42a5c4e FBH |
604 | return 0; |
605 | ||
f364cb88 JS |
606 | code = finish_command(conn); |
607 | free(conn->argv); | |
98158e9c | 608 | free(conn); |
f364cb88 | 609 | return code; |
f7192598 | 610 | } |
f206063b FL |
611 | |
612 | char *git_getpass(const char *prompt) | |
613 | { | |
d3e7da89 | 614 | const char *askpass; |
f206063b FL |
615 | struct child_process pass; |
616 | const char *args[3]; | |
617 | static struct strbuf buffer = STRBUF_INIT; | |
618 | ||
619 | askpass = getenv("GIT_ASKPASS"); | |
d3e7da89 AK |
620 | if (!askpass) |
621 | askpass = askpass_program; | |
90e87b01 KF |
622 | if (!askpass) |
623 | askpass = getenv("SSH_ASKPASS"); | |
8713feb1 JS |
624 | if (!askpass || !(*askpass)) { |
625 | char *result = getpass(prompt); | |
626 | if (!result) | |
627 | die_errno("Could not read password"); | |
628 | return result; | |
629 | } | |
f206063b FL |
630 | |
631 | args[0] = askpass; | |
632 | args[1] = prompt; | |
633 | args[2] = NULL; | |
634 | ||
635 | memset(&pass, 0, sizeof(pass)); | |
636 | pass.argv = args; | |
637 | pass.out = -1; | |
638 | ||
639 | if (start_command(&pass)) | |
640 | exit(1); | |
641 | ||
642 | strbuf_reset(&buffer); | |
643 | if (strbuf_read(&buffer, pass.out, 20) < 0) | |
644 | die("failed to read password from %s\n", askpass); | |
645 | ||
646 | close(pass.out); | |
647 | ||
648 | if (finish_command(&pass)) | |
649 | exit(1); | |
650 | ||
651 | strbuf_setlen(&buffer, strcspn(buffer.buf, "\r\n")); | |
652 | ||
653 | return buffer.buf; | |
654 | } |