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