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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" |
47a59185 | 8 | #include "connect.h" |
9d2e9420 | 9 | #include "url.h" |
a45b5f05 | 10 | #include "string-list.h" |
13eb4626 | 11 | #include "sha1-array.h" |
a5adaced | 12 | #include "transport.h" |
f7192598 | 13 | |
96f1e58f | 14 | static char *server_capabilities; |
5d54cffc | 15 | static const char *parse_feature_value(const char *, const char *, int *); |
211b5f9e | 16 | |
be0b3f82 | 17 | static int check_ref(const char *name, unsigned int flags) |
2718ff09 LT |
18 | { |
19 | if (!flags) | |
20 | return 1; | |
21 | ||
be0b3f82 | 22 | if (!skip_prefix(name, "refs/", &name)) |
2718ff09 LT |
23 | return 0; |
24 | ||
2718ff09 | 25 | /* REF_NORMAL means that we don't want the magic fake tag refs */ |
8d9c5010 | 26 | if ((flags & REF_NORMAL) && check_refname_format(name, 0)) |
2718ff09 LT |
27 | return 0; |
28 | ||
29 | /* REF_HEADS means that we want regular branch heads */ | |
be0b3f82 | 30 | if ((flags & REF_HEADS) && starts_with(name, "heads/")) |
2718ff09 LT |
31 | return 1; |
32 | ||
33 | /* REF_TAGS means that we want tags */ | |
be0b3f82 | 34 | if ((flags & REF_TAGS) && starts_with(name, "tags/")) |
2718ff09 LT |
35 | return 1; |
36 | ||
37 | /* All type bits clear means that we are ok with anything */ | |
38 | return !(flags & ~REF_NORMAL); | |
39 | } | |
40 | ||
4577370e DB |
41 | int check_ref_type(const struct ref *ref, int flags) |
42 | { | |
be0b3f82 | 43 | return check_ref(ref->name, flags); |
4577370e DB |
44 | } |
45 | ||
46284dd1 HV |
46 | static void die_initial_contact(int got_at_least_one_head) |
47 | { | |
48 | if (got_at_least_one_head) | |
49 | die("The remote end hung up upon initial contact"); | |
50 | else | |
51 | die("Could not read from remote repository.\n\n" | |
52 | "Please make sure you have the correct access rights\n" | |
53 | "and the repository exists."); | |
54 | } | |
55 | ||
a45b5f05 JH |
56 | static void parse_one_symref_info(struct string_list *symref, const char *val, int len) |
57 | { | |
58 | char *sym, *target; | |
59 | struct string_list_item *item; | |
60 | ||
61 | if (!len) | |
62 | return; /* just "symref" */ | |
63 | /* e.g. "symref=HEAD:refs/heads/master" */ | |
5c0b13f8 | 64 | sym = xmemdupz(val, len); |
a45b5f05 JH |
65 | target = strchr(sym, ':'); |
66 | if (!target) | |
67 | /* just "symref=something" */ | |
68 | goto reject; | |
69 | *(target++) = '\0'; | |
70 | if (check_refname_format(sym, REFNAME_ALLOW_ONELEVEL) || | |
71 | check_refname_format(target, REFNAME_ALLOW_ONELEVEL)) | |
72 | /* "symref=bogus:pair */ | |
73 | goto reject; | |
74 | item = string_list_append(symref, sym); | |
75 | item->util = target; | |
76 | return; | |
77 | reject: | |
78 | free(sym); | |
79 | return; | |
80 | } | |
81 | ||
82 | static void annotate_refs_with_symref_info(struct ref *ref) | |
83 | { | |
84 | struct string_list symref = STRING_LIST_INIT_DUP; | |
85 | const char *feature_list = server_capabilities; | |
86 | ||
87 | while (feature_list) { | |
88 | int len; | |
89 | const char *val; | |
90 | ||
91 | val = parse_feature_value(feature_list, "symref", &len); | |
92 | if (!val) | |
93 | break; | |
94 | parse_one_symref_info(&symref, val, len); | |
95 | feature_list = val + 1; | |
96 | } | |
3383e199 | 97 | string_list_sort(&symref); |
a45b5f05 JH |
98 | |
99 | for (; ref; ref = ref->next) { | |
100 | struct string_list_item *item; | |
101 | item = string_list_lookup(&symref, ref->name); | |
102 | if (!item) | |
103 | continue; | |
104 | ref->symref = xstrdup((char *)item->util); | |
105 | } | |
106 | string_list_clear(&symref, 0); | |
107 | } | |
108 | ||
d1c133f5 LT |
109 | /* |
110 | * Read all the refs from the other end | |
111 | */ | |
85edf4f5 JK |
112 | struct ref **get_remote_heads(int in, char *src_buf, size_t src_len, |
113 | struct ref **list, unsigned int flags, | |
b06dcd7d NTND |
114 | struct sha1_array *extra_have, |
115 | struct sha1_array *shallow_points) | |
d1c133f5 | 116 | { |
a45b5f05 | 117 | struct ref **orig_list = list; |
46284dd1 HV |
118 | int got_at_least_one_head = 0; |
119 | ||
d1c133f5 LT |
120 | *list = NULL; |
121 | for (;;) { | |
122 | struct ref *ref; | |
123 | unsigned char old_sha1[20]; | |
d1c133f5 | 124 | char *name; |
211b5f9e | 125 | int len, name_len; |
74543a04 | 126 | char *buffer = packet_buffer; |
ae021d87 | 127 | const char *arg; |
d1c133f5 | 128 | |
85edf4f5 | 129 | len = packet_read(in, &src_buf, &src_len, |
4981fe75 | 130 | packet_buffer, sizeof(packet_buffer), |
819b929d JK |
131 | PACKET_READ_GENTLE_ON_EOF | |
132 | PACKET_READ_CHOMP_NEWLINE); | |
46284dd1 HV |
133 | if (len < 0) |
134 | die_initial_contact(got_at_least_one_head); | |
135 | ||
d1c133f5 LT |
136 | if (!len) |
137 | break; | |
d1c133f5 | 138 | |
ae021d87 JK |
139 | if (len > 4 && skip_prefix(buffer, "ERR ", &arg)) |
140 | die("remote error: %s", arg); | |
a8073289 | 141 | |
ae021d87 JK |
142 | if (len == 48 && skip_prefix(buffer, "shallow ", &arg)) { |
143 | if (get_sha1_hex(arg, old_sha1)) | |
144 | die("protocol error: expected shallow sha-1, got '%s'", arg); | |
b06dcd7d NTND |
145 | if (!shallow_points) |
146 | die("repository on the other end cannot be shallow"); | |
147 | sha1_array_append(shallow_points, old_sha1); | |
148 | continue; | |
149 | } | |
150 | ||
d1c133f5 LT |
151 | if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ') |
152 | die("protocol error: expected sha/ref, got '%s'", buffer); | |
153 | name = buffer + 41; | |
1a7141ff | 154 | |
211b5f9e JS |
155 | name_len = strlen(name); |
156 | if (len != name_len + 41) { | |
8e0f7003 | 157 | free(server_capabilities); |
9befac47 | 158 | server_capabilities = xstrdup(name + name_len + 1); |
211b5f9e JS |
159 | } |
160 | ||
2ae7f90f | 161 | if (extra_have && !strcmp(name, ".have")) { |
13eb4626 | 162 | sha1_array_append(extra_have, old_sha1); |
40c155ff JH |
163 | continue; |
164 | } | |
165 | ||
be0b3f82 | 166 | if (!check_ref(name, flags)) |
cfee10a7 | 167 | continue; |
59c69c0c | 168 | ref = alloc_ref(buffer + 41); |
e702496e | 169 | hashcpy(ref->old_sha1, old_sha1); |
d1c133f5 LT |
170 | *list = ref; |
171 | list = &ref->next; | |
46284dd1 | 172 | got_at_least_one_head = 1; |
d1c133f5 | 173 | } |
a45b5f05 JH |
174 | |
175 | annotate_refs_with_symref_info(*orig_list); | |
176 | ||
d1c133f5 LT |
177 | return list; |
178 | } | |
179 | ||
5d54cffc | 180 | static const char *parse_feature_value(const char *feature_list, const char *feature, int *lenp) |
f47182c8 JH |
181 | { |
182 | int len; | |
183 | ||
184 | if (!feature_list) | |
185 | return NULL; | |
186 | ||
187 | len = strlen(feature); | |
188 | while (*feature_list) { | |
189 | const char *found = strstr(feature_list, feature); | |
190 | if (!found) | |
191 | return NULL; | |
94427108 JK |
192 | if (feature_list == found || isspace(found[-1])) { |
193 | const char *value = found + len; | |
194 | /* feature with no value (e.g., "thin-pack") */ | |
195 | if (!*value || isspace(*value)) { | |
196 | if (lenp) | |
197 | *lenp = 0; | |
198 | return value; | |
199 | } | |
200 | /* feature with a value (e.g., "agent=git/1.2.3") */ | |
201 | else if (*value == '=') { | |
202 | value++; | |
203 | if (lenp) | |
204 | *lenp = strcspn(value, " \t\n"); | |
205 | return value; | |
206 | } | |
207 | /* | |
208 | * otherwise we matched a substring of another feature; | |
209 | * keep looking | |
210 | */ | |
211 | } | |
f47182c8 JH |
212 | feature_list = found + 1; |
213 | } | |
214 | return NULL; | |
211b5f9e JS |
215 | } |
216 | ||
94427108 JK |
217 | int parse_feature_request(const char *feature_list, const char *feature) |
218 | { | |
219 | return !!parse_feature_value(feature_list, feature, NULL); | |
220 | } | |
221 | ||
222 | const char *server_feature_value(const char *feature, int *len) | |
223 | { | |
224 | return parse_feature_value(server_capabilities, feature, len); | |
225 | } | |
226 | ||
227 | int server_supports(const char *feature) | |
228 | { | |
229 | return !!server_feature_value(feature, NULL); | |
230 | } | |
231 | ||
2386d658 LT |
232 | enum protocol { |
233 | PROTO_LOCAL = 1, | |
c59ab2e5 | 234 | PROTO_FILE, |
2386d658 | 235 | PROTO_SSH, |
4b05548f | 236 | PROTO_GIT |
2386d658 LT |
237 | }; |
238 | ||
c59ab2e5 TB |
239 | int url_is_local_not_ssh(const char *url) |
240 | { | |
241 | const char *colon = strchr(url, ':'); | |
242 | const char *slash = strchr(url, '/'); | |
243 | return !colon || (slash && slash < colon) || | |
244 | has_dos_drive_prefix(url); | |
245 | } | |
246 | ||
5610b7c0 TB |
247 | static const char *prot_name(enum protocol protocol) |
248 | { | |
249 | switch (protocol) { | |
250 | case PROTO_LOCAL: | |
c59ab2e5 | 251 | case PROTO_FILE: |
5610b7c0 TB |
252 | return "file"; |
253 | case PROTO_SSH: | |
254 | return "ssh"; | |
255 | case PROTO_GIT: | |
256 | return "git"; | |
257 | default: | |
258 | return "unkown protocol"; | |
259 | } | |
260 | } | |
261 | ||
2386d658 LT |
262 | static enum protocol get_protocol(const char *name) |
263 | { | |
264 | if (!strcmp(name, "ssh")) | |
265 | return PROTO_SSH; | |
266 | if (!strcmp(name, "git")) | |
267 | return PROTO_GIT; | |
c05186cc LT |
268 | if (!strcmp(name, "git+ssh")) |
269 | return PROTO_SSH; | |
270 | if (!strcmp(name, "ssh+git")) | |
271 | return PROTO_SSH; | |
72a4f4b6 | 272 | if (!strcmp(name, "file")) |
c59ab2e5 | 273 | return PROTO_FILE; |
2386d658 LT |
274 | die("I don't handle protocol '%s'", name); |
275 | } | |
276 | ||
86ceb337 TB |
277 | static char *host_end(char **hoststart, int removebrackets) |
278 | { | |
279 | char *host = *hoststart; | |
280 | char *end; | |
281 | char *start = strstr(host, "@["); | |
282 | if (start) | |
283 | start++; /* Jump over '@' */ | |
284 | else | |
285 | start = host; | |
286 | if (start[0] == '[') { | |
287 | end = strchr(start + 1, ']'); | |
288 | if (end) { | |
289 | if (removebrackets) { | |
290 | *end = 0; | |
291 | memmove(start, start + 1, end - start); | |
292 | end++; | |
293 | } | |
294 | } else | |
295 | end = host; | |
296 | } else | |
297 | end = host; | |
298 | return end; | |
299 | } | |
300 | ||
5ba88448 YH |
301 | #define STR_(s) # s |
302 | #define STR(s) STR_(s) | |
2386d658 | 303 | |
72a534da ML |
304 | static void get_host_and_port(char **host, const char **port) |
305 | { | |
306 | char *colon, *end; | |
86ceb337 | 307 | end = host_end(host, 1); |
72a534da | 308 | colon = strchr(end, ':'); |
72a534da | 309 | if (colon) { |
86ceb337 TB |
310 | long portnr = strtol(colon + 1, &end, 10); |
311 | if (end != colon + 1 && *end == '\0' && 0 <= portnr && portnr < 65536) { | |
312 | *colon = 0; | |
313 | *port = colon + 1; | |
6b6c5f7a TB |
314 | } else if (!colon[1]) { |
315 | *colon = 0; | |
86ceb337 | 316 | } |
72a534da ML |
317 | } |
318 | } | |
319 | ||
e47a8583 EW |
320 | static void enable_keepalive(int sockfd) |
321 | { | |
322 | int ka = 1; | |
323 | ||
324 | if (setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &ka, sizeof(ka)) < 0) | |
325 | fprintf(stderr, "unable to set SO_KEEPALIVE on socket: %s\n", | |
326 | strerror(errno)); | |
327 | } | |
328 | ||
49744d63 | 329 | #ifndef NO_IPV6 |
4c505f71 | 330 | |
ba505322 AR |
331 | static const char *ai_name(const struct addrinfo *ai) |
332 | { | |
785a9857 BK |
333 | static char addr[NI_MAXHOST]; |
334 | if (getnameinfo(ai->ai_addr, ai->ai_addrlen, addr, sizeof(addr), NULL, 0, | |
335 | NI_NUMERICHOST) != 0) | |
ba505322 | 336 | strcpy(addr, "(unknown)"); |
785a9857 | 337 | |
ba505322 AR |
338 | return addr; |
339 | } | |
340 | ||
5ad312be JL |
341 | /* |
342 | * Returns a connected socket() fd, or else die()s. | |
343 | */ | |
7841ce79 | 344 | static int git_tcp_connect_sock(char *host, int flags) |
2386d658 | 345 | { |
63a995b6 DZ |
346 | struct strbuf error_message = STRBUF_INIT; |
347 | int sockfd = -1; | |
554fe20d | 348 | const char *port = STR(DEFAULT_GIT_PORT); |
5ba88448 YH |
349 | struct addrinfo hints, *ai0, *ai; |
350 | int gai; | |
ba505322 | 351 | int cnt = 0; |
5ba88448 | 352 | |
72a534da ML |
353 | get_host_and_port(&host, &port); |
354 | if (!*port) | |
355 | port = "<none>"; | |
5ba88448 YH |
356 | |
357 | memset(&hints, 0, sizeof(hints)); | |
358 | hints.ai_socktype = SOCK_STREAM; | |
359 | hints.ai_protocol = IPPROTO_TCP; | |
360 | ||
7841ce79 MT |
361 | if (flags & CONNECT_VERBOSE) |
362 | fprintf(stderr, "Looking up %s ... ", host); | |
363 | ||
5ba88448 YH |
364 | gai = getaddrinfo(host, port, &hints, &ai); |
365 | if (gai) | |
608d48b2 | 366 | die("Unable to look up %s (port %s) (%s)", host, port, gai_strerror(gai)); |
5ba88448 | 367 | |
7841ce79 MT |
368 | if (flags & CONNECT_VERBOSE) |
369 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
370 | ||
e08afecd | 371 | for (ai0 = ai; ai; ai = ai->ai_next, cnt++) { |
5ad312be JL |
372 | sockfd = socket(ai->ai_family, |
373 | ai->ai_socktype, ai->ai_protocol); | |
63a995b6 DZ |
374 | if ((sockfd < 0) || |
375 | (connect(sockfd, ai->ai_addr, ai->ai_addrlen) < 0)) { | |
376 | strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n", | |
377 | host, cnt, ai_name(ai), strerror(errno)); | |
378 | if (0 <= sockfd) | |
379 | close(sockfd); | |
5ba88448 YH |
380 | sockfd = -1; |
381 | continue; | |
2386d658 | 382 | } |
ba505322 AR |
383 | if (flags & CONNECT_VERBOSE) |
384 | fprintf(stderr, "%s ", ai_name(ai)); | |
5ba88448 | 385 | break; |
2386d658 LT |
386 | } |
387 | ||
5ba88448 | 388 | freeaddrinfo(ai0); |
2386d658 | 389 | |
2386d658 | 390 | if (sockfd < 0) |
63a995b6 | 391 | die("unable to connect to %s:\n%s", host, error_message.buf); |
5ba88448 | 392 | |
e47a8583 EW |
393 | enable_keepalive(sockfd); |
394 | ||
7841ce79 MT |
395 | if (flags & CONNECT_VERBOSE) |
396 | fprintf(stderr, "done.\n"); | |
397 | ||
63a995b6 DZ |
398 | strbuf_release(&error_message); |
399 | ||
5ad312be | 400 | return sockfd; |
2386d658 LT |
401 | } |
402 | ||
49744d63 | 403 | #else /* NO_IPV6 */ |
4c505f71 | 404 | |
5ad312be JL |
405 | /* |
406 | * Returns a connected socket() fd, or else die()s. | |
407 | */ | |
7841ce79 | 408 | static int git_tcp_connect_sock(char *host, int flags) |
4c505f71 | 409 | { |
7203a2d1 EFL |
410 | struct strbuf error_message = STRBUF_INIT; |
411 | int sockfd = -1; | |
72a534da ML |
412 | const char *port = STR(DEFAULT_GIT_PORT); |
413 | char *ep; | |
4c505f71 PA |
414 | struct hostent *he; |
415 | struct sockaddr_in sa; | |
416 | char **ap; | |
417 | unsigned int nport; | |
ba505322 | 418 | int cnt; |
4c505f71 | 419 | |
72a534da | 420 | get_host_and_port(&host, &port); |
4c505f71 | 421 | |
7841ce79 MT |
422 | if (flags & CONNECT_VERBOSE) |
423 | fprintf(stderr, "Looking up %s ... ", host); | |
424 | ||
4c505f71 PA |
425 | he = gethostbyname(host); |
426 | if (!he) | |
427 | die("Unable to look up %s (%s)", host, hstrerror(h_errno)); | |
428 | nport = strtoul(port, &ep, 10); | |
429 | if ( ep == port || *ep ) { | |
430 | /* Not numeric */ | |
431 | struct servent *se = getservbyname(port,"tcp"); | |
432 | if ( !se ) | |
d7530708 | 433 | die("Unknown port %s", port); |
4c505f71 PA |
434 | nport = se->s_port; |
435 | } | |
436 | ||
7841ce79 MT |
437 | if (flags & CONNECT_VERBOSE) |
438 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
439 | ||
ba505322 | 440 | for (cnt = 0, ap = he->h_addr_list; *ap; ap++, cnt++) { |
4c505f71 PA |
441 | memset(&sa, 0, sizeof sa); |
442 | sa.sin_family = he->h_addrtype; | |
6573faff | 443 | sa.sin_port = htons(nport); |
c6164218 | 444 | memcpy(&sa.sin_addr, *ap, he->h_length); |
4c505f71 | 445 | |
7203a2d1 EFL |
446 | sockfd = socket(he->h_addrtype, SOCK_STREAM, 0); |
447 | if ((sockfd < 0) || | |
448 | connect(sockfd, (struct sockaddr *)&sa, sizeof sa) < 0) { | |
449 | strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n", | |
ba505322 AR |
450 | host, |
451 | cnt, | |
452 | inet_ntoa(*(struct in_addr *)&sa.sin_addr), | |
7203a2d1 EFL |
453 | strerror(errno)); |
454 | if (0 <= sockfd) | |
455 | close(sockfd); | |
4c505f71 PA |
456 | sockfd = -1; |
457 | continue; | |
458 | } | |
ba505322 AR |
459 | if (flags & CONNECT_VERBOSE) |
460 | fprintf(stderr, "%s ", | |
461 | inet_ntoa(*(struct in_addr *)&sa.sin_addr)); | |
4c505f71 PA |
462 | break; |
463 | } | |
464 | ||
465 | if (sockfd < 0) | |
7203a2d1 | 466 | die("unable to connect to %s:\n%s", host, error_message.buf); |
4c505f71 | 467 | |
e47a8583 EW |
468 | enable_keepalive(sockfd); |
469 | ||
7841ce79 MT |
470 | if (flags & CONNECT_VERBOSE) |
471 | fprintf(stderr, "done.\n"); | |
472 | ||
5ad312be JL |
473 | return sockfd; |
474 | } | |
475 | ||
476 | #endif /* NO_IPV6 */ | |
477 | ||
478 | ||
7841ce79 | 479 | static void git_tcp_connect(int fd[2], char *host, int flags) |
5ad312be | 480 | { |
7841ce79 | 481 | int sockfd = git_tcp_connect_sock(host, flags); |
5ad312be | 482 | |
4c505f71 | 483 | fd[0] = sockfd; |
ec587fde | 484 | fd[1] = dup(sockfd); |
4c505f71 PA |
485 | } |
486 | ||
4c505f71 | 487 | |
96f1e58f | 488 | static char *git_proxy_command; |
f8014776 | 489 | |
ef90d6d4 JS |
490 | static int git_proxy_command_options(const char *var, const char *value, |
491 | void *cb) | |
f8014776 | 492 | { |
e814bc4d | 493 | if (!strcmp(var, "core.gitproxy")) { |
c3df8568 YH |
494 | const char *for_pos; |
495 | int matchlen = -1; | |
496 | int hostlen; | |
15112c95 EFL |
497 | const char *rhost_name = cb; |
498 | int rhost_len = strlen(rhost_name); | |
c3df8568 | 499 | |
e814bc4d | 500 | if (git_proxy_command) |
f8014776 | 501 | return 0; |
c64b9ad0 JH |
502 | if (!value) |
503 | return config_error_nonbool(var); | |
e814bc4d JH |
504 | /* [core] |
505 | * ;# matches www.kernel.org as well | |
506 | * gitproxy = netcatter-1 for kernel.org | |
507 | * gitproxy = netcatter-2 for sample.xz | |
508 | * gitproxy = netcatter-default | |
509 | */ | |
c3df8568 | 510 | for_pos = strstr(value, " for "); |
e814bc4d JH |
511 | if (!for_pos) |
512 | /* matches everybody */ | |
513 | matchlen = strlen(value); | |
514 | else { | |
515 | hostlen = strlen(for_pos + 5); | |
516 | if (rhost_len < hostlen) | |
517 | matchlen = -1; | |
518 | else if (!strncmp(for_pos + 5, | |
519 | rhost_name + rhost_len - hostlen, | |
520 | hostlen) && | |
521 | ((rhost_len == hostlen) || | |
522 | rhost_name[rhost_len - hostlen -1] == '.')) | |
523 | matchlen = for_pos - value; | |
524 | else | |
525 | matchlen = -1; | |
526 | } | |
527 | if (0 <= matchlen) { | |
528 | /* core.gitproxy = none for kernel.org */ | |
a6080a0a | 529 | if (matchlen == 4 && |
e814bc4d JH |
530 | !memcmp(value, "none", 4)) |
531 | matchlen = 0; | |
182af834 | 532 | git_proxy_command = xmemdupz(value, matchlen); |
f8014776 | 533 | } |
e814bc4d | 534 | return 0; |
f8014776 PC |
535 | } |
536 | ||
ef90d6d4 | 537 | return git_default_config(var, value, cb); |
f8014776 PC |
538 | } |
539 | ||
e814bc4d | 540 | static int git_use_proxy(const char *host) |
f8014776 PC |
541 | { |
542 | git_proxy_command = getenv("GIT_PROXY_COMMAND"); | |
15112c95 | 543 | git_config(git_proxy_command_options, (void*)host); |
e814bc4d | 544 | return (git_proxy_command && *git_proxy_command); |
f8014776 PC |
545 | } |
546 | ||
5cbf8246 | 547 | static struct child_process *git_proxy_connect(int fd[2], char *host) |
f8014776 | 548 | { |
554fe20d | 549 | const char *port = STR(DEFAULT_GIT_PORT); |
5cbf8246 | 550 | struct child_process *proxy; |
f8014776 | 551 | |
72a534da | 552 | get_host_and_port(&host, &port); |
f8014776 | 553 | |
483bbd4e RS |
554 | proxy = xmalloc(sizeof(*proxy)); |
555 | child_process_init(proxy); | |
1823bea1 JK |
556 | argv_array_push(&proxy->args, git_proxy_command); |
557 | argv_array_push(&proxy->args, host); | |
558 | argv_array_push(&proxy->args, port); | |
5cbf8246 JK |
559 | proxy->in = -1; |
560 | proxy->out = -1; | |
561 | if (start_command(proxy)) | |
1823bea1 | 562 | die("cannot start proxy %s", git_proxy_command); |
5cbf8246 JK |
563 | fd[0] = proxy->out; /* read from proxy stdout */ |
564 | fd[1] = proxy->in; /* write to proxy stdin */ | |
565 | return proxy; | |
f8014776 PC |
566 | } |
567 | ||
86ceb337 | 568 | static char *get_port(char *host) |
2e776665 LT |
569 | { |
570 | char *end; | |
86ceb337 TB |
571 | char *p = strchr(host, ':'); |
572 | ||
2e776665 | 573 | if (p) { |
8f148253 RS |
574 | long port = strtol(p + 1, &end, 10); |
575 | if (end != p + 1 && *end == '\0' && 0 <= port && port < 65536) { | |
86ceb337 TB |
576 | *p = '\0'; |
577 | return p+1; | |
2e776665 LT |
578 | } |
579 | } | |
580 | ||
581 | return NULL; | |
582 | } | |
583 | ||
f7192598 | 584 | /* |
cabc3c12 JS |
585 | * Extract protocol and relevant parts from the specified connection URL. |
586 | * The caller must free() the returned strings. | |
f7192598 | 587 | */ |
cabc3c12 | 588 | static enum protocol parse_connect_url(const char *url_orig, char **ret_host, |
83b05875 | 589 | char **ret_path) |
f7192598 | 590 | { |
9d2e9420 | 591 | char *url; |
8e76bf3f | 592 | char *host, *path; |
356bece0 | 593 | char *end; |
c59ab2e5 | 594 | int separator = '/'; |
faea9ccb | 595 | enum protocol protocol = PROTO_LOCAL; |
f0b7367c | 596 | |
9d2e9420 JK |
597 | if (is_url(url_orig)) |
598 | url = url_decode(url_orig); | |
599 | else | |
600 | url = xstrdup(url_orig); | |
601 | ||
faea9ccb | 602 | host = strstr(url, "://"); |
eeefa7c9 | 603 | if (host) { |
faea9ccb AE |
604 | *host = '\0'; |
605 | protocol = get_protocol(url); | |
606 | host += 3; | |
356bece0 | 607 | } else { |
f7192598 | 608 | host = url; |
c59ab2e5 TB |
609 | if (!url_is_local_not_ssh(url)) { |
610 | protocol = PROTO_SSH; | |
611 | separator = ':'; | |
612 | } | |
356bece0 YH |
613 | } |
614 | ||
9aa5053d | 615 | /* |
83b05875 TB |
616 | * Don't do destructive transforms as protocol code does |
617 | * '[]' unwrapping in get_host_and_port() | |
9aa5053d | 618 | */ |
86ceb337 | 619 | end = host_end(&host, 0); |
356bece0 | 620 | |
c59ab2e5 | 621 | if (protocol == PROTO_LOCAL) |
72a4f4b6 | 622 | path = end; |
c59ab2e5 TB |
623 | else if (protocol == PROTO_FILE && has_dos_drive_prefix(end)) |
624 | path = end; /* "file://$(pwd)" may be "file://C:/projects/repo" */ | |
625 | else | |
626 | path = strchr(end, separator); | |
2386d658 | 627 | |
faea9ccb AE |
628 | if (!path || !*path) |
629 | die("No path specified. See 'man git-pull' for valid url syntax"); | |
630 | ||
631 | /* | |
632 | * null-terminate hostname and point path to ~ for URL's like this: | |
633 | * ssh://host.xz/~user/repo | |
634 | */ | |
c59ab2e5 TB |
635 | |
636 | end = path; /* Need to \0 terminate host here */ | |
637 | if (separator == ':') | |
638 | path++; /* path starts after ':' */ | |
639 | if (protocol == PROTO_GIT || protocol == PROTO_SSH) { | |
faea9ccb AE |
640 | if (path[1] == '~') |
641 | path++; | |
faea9ccb AE |
642 | } |
643 | ||
c59ab2e5 TB |
644 | path = xstrdup(path); |
645 | *end = '\0'; | |
646 | ||
cabc3c12 | 647 | *ret_host = xstrdup(host); |
c59ab2e5 | 648 | *ret_path = path; |
cabc3c12 JS |
649 | free(url); |
650 | return protocol; | |
651 | } | |
652 | ||
d3180279 | 653 | static struct child_process no_fork = CHILD_PROCESS_INIT; |
cabc3c12 JS |
654 | |
655 | /* | |
656 | * This returns a dummy child_process if the transport protocol does not | |
657 | * need fork(2), or a struct child_process object if it does. Once done, | |
658 | * finish the connection with finish_connect() with the value returned from | |
659 | * this function (it is safe to call finish_connect() with NULL to support | |
660 | * the former case). | |
661 | * | |
662 | * If it returns, the connect is successful; it just dies on errors (this | |
663 | * will hopefully be changed in a libification effort, to return NULL when | |
664 | * the connection failed). | |
665 | */ | |
666 | struct child_process *git_connect(int fd[2], const char *url, | |
667 | const char *prog, int flags) | |
668 | { | |
a2036d7e | 669 | char *hostandport, *path; |
cabc3c12 JS |
670 | struct child_process *conn = &no_fork; |
671 | enum protocol protocol; | |
cabc3c12 JS |
672 | struct strbuf cmd = STRBUF_INIT; |
673 | ||
674 | /* Without this we cannot rely on waitpid() to tell | |
675 | * what happened to our children. | |
2e776665 | 676 | */ |
cabc3c12 | 677 | signal(SIGCHLD, SIG_DFL); |
2e776665 | 678 | |
a2036d7e | 679 | protocol = parse_connect_url(url, &hostandport, &path); |
3f55ccab | 680 | if ((flags & CONNECT_DIAG_URL) && (protocol != PROTO_SSH)) { |
5610b7c0 TB |
681 | printf("Diag: url=%s\n", url ? url : "NULL"); |
682 | printf("Diag: protocol=%s\n", prot_name(protocol)); | |
a2036d7e | 683 | printf("Diag: hostandport=%s\n", hostandport ? hostandport : "NULL"); |
5610b7c0 | 684 | printf("Diag: path=%s\n", path ? path : "NULL"); |
a2036d7e TB |
685 | conn = NULL; |
686 | } else if (protocol == PROTO_GIT) { | |
94bc83c5 JK |
687 | /* |
688 | * Set up virtual host information based on where we will | |
689 | * connect, unless the user has overridden us in | |
690 | * the environment. | |
691 | */ | |
692 | char *target_host = getenv("GIT_OVERRIDE_VIRTUAL_HOST"); | |
693 | if (target_host) | |
694 | target_host = xstrdup(target_host); | |
695 | else | |
696 | target_host = xstrdup(hostandport); | |
697 | ||
a5adaced JK |
698 | transport_check_allowed("git"); |
699 | ||
5ad312be JL |
700 | /* These underlying connection commands die() if they |
701 | * cannot connect. | |
702 | */ | |
a2036d7e TB |
703 | if (git_use_proxy(hostandport)) |
704 | conn = git_proxy_connect(fd, hostandport); | |
da2a95b2 | 705 | else |
a2036d7e | 706 | git_tcp_connect(fd, hostandport, flags); |
5ad312be JL |
707 | /* |
708 | * Separate original protocol components prog and path | |
73bb33a9 SP |
709 | * from extended host header with a NUL byte. |
710 | * | |
711 | * Note: Do not add any other headers here! Doing so | |
712 | * will cause older git-daemon servers to crash. | |
5ad312be JL |
713 | */ |
714 | packet_write(fd[1], | |
715 | "%s %s%chost=%s%c", | |
716 | prog, path, 0, | |
717 | target_host, 0); | |
718 | free(target_host); | |
a2036d7e | 719 | } else { |
483bbd4e RS |
720 | conn = xmalloc(sizeof(*conn)); |
721 | child_process_init(conn); | |
a2036d7e TB |
722 | |
723 | strbuf_addstr(&cmd, prog); | |
724 | strbuf_addch(&cmd, ' '); | |
725 | sq_quote_buf(&cmd, path); | |
726 | ||
727 | conn->in = conn->out = -1; | |
a2036d7e | 728 | if (protocol == PROTO_SSH) { |
39942766 | 729 | const char *ssh; |
baaf2337 | 730 | int putty, tortoiseplink = 0; |
a2036d7e TB |
731 | char *ssh_host = hostandport; |
732 | const char *port = NULL; | |
a5adaced | 733 | transport_check_allowed("ssh"); |
a2036d7e | 734 | get_host_and_port(&ssh_host, &port); |
a2036d7e | 735 | |
86ceb337 TB |
736 | if (!port) |
737 | port = get_port(ssh_host); | |
42da4840 | 738 | |
3f55ccab TB |
739 | if (flags & CONNECT_DIAG_URL) { |
740 | printf("Diag: url=%s\n", url ? url : "NULL"); | |
741 | printf("Diag: protocol=%s\n", prot_name(protocol)); | |
742 | printf("Diag: userandhost=%s\n", ssh_host ? ssh_host : "NULL"); | |
743 | printf("Diag: port=%s\n", port ? port : "NONE"); | |
744 | printf("Diag: path=%s\n", path ? path : "NULL"); | |
a2036d7e | 745 | |
3f55ccab TB |
746 | free(hostandport); |
747 | free(path); | |
04f20c04 | 748 | free(conn); |
3f55ccab | 749 | return NULL; |
37ee646e | 750 | } |
751 | ||
752 | ssh = getenv("GIT_SSH_COMMAND"); | |
753 | if (ssh) { | |
754 | conn->use_shell = 1; | |
755 | putty = 0; | |
3f55ccab | 756 | } else { |
baaf2337 | 757 | const char *base; |
758 | char *ssh_dup; | |
759 | ||
37ee646e | 760 | ssh = getenv("GIT_SSH"); |
761 | if (!ssh) | |
762 | ssh = "ssh"; | |
baaf2337 | 763 | |
764 | ssh_dup = xstrdup(ssh); | |
765 | base = basename(ssh_dup); | |
766 | ||
767 | tortoiseplink = !strcasecmp(base, "tortoiseplink") || | |
768 | !strcasecmp(base, "tortoiseplink.exe"); | |
769 | putty = !strcasecmp(base, "plink") || | |
770 | !strcasecmp(base, "plink.exe") || tortoiseplink; | |
771 | ||
772 | free(ssh_dup); | |
37ee646e | 773 | } |
774 | ||
775 | argv_array_push(&conn->args, ssh); | |
baaf2337 | 776 | if (tortoiseplink) |
37ee646e | 777 | argv_array_push(&conn->args, "-batch"); |
778 | if (port) { | |
779 | /* P is for PuTTY, p is for OpenSSH */ | |
780 | argv_array_push(&conn->args, putty ? "-P" : "-p"); | |
781 | argv_array_push(&conn->args, port); | |
a2036d7e | 782 | } |
37ee646e | 783 | argv_array_push(&conn->args, ssh_host); |
c049b61d | 784 | } else { |
a2036d7e TB |
785 | /* remove repo-local variables from the environment */ |
786 | conn->env = local_repo_env; | |
787 | conn->use_shell = 1; | |
a5adaced | 788 | transport_check_allowed("file"); |
4852f723 | 789 | } |
1823bea1 | 790 | argv_array_push(&conn->args, cmd.buf); |
f364cb88 | 791 | |
a2036d7e TB |
792 | if (start_command(conn)) |
793 | die("unable to fork"); | |
f364cb88 | 794 | |
a2036d7e TB |
795 | fd[0] = conn->out; /* read from child's stdout */ |
796 | fd[1] = conn->in; /* write to child's stdin */ | |
797 | strbuf_release(&cmd); | |
798 | } | |
799 | free(hostandport); | |
cabc3c12 | 800 | free(path); |
98158e9c | 801 | return conn; |
f7192598 LT |
802 | } |
803 | ||
7ffe853b JK |
804 | int git_connection_is_socket(struct child_process *conn) |
805 | { | |
806 | return conn == &no_fork; | |
807 | } | |
808 | ||
98158e9c | 809 | int finish_connect(struct child_process *conn) |
f7192598 | 810 | { |
f364cb88 | 811 | int code; |
7ffe853b | 812 | if (!conn || git_connection_is_socket(conn)) |
f42a5c4e FBH |
813 | return 0; |
814 | ||
f364cb88 | 815 | code = finish_command(conn); |
98158e9c | 816 | free(conn); |
f364cb88 | 817 | return code; |
f7192598 | 818 | } |