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Commit | Line | Data |
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731043fd | 1 | #include "git-compat-util.h" |
f7192598 | 2 | #include "cache.h" |
b2141fc1 | 3 | #include "config.h" |
41cb7488 | 4 | #include "pkt-line.h" |
b10d0ec7 | 5 | #include "quote.h" |
6abf5c0c | 6 | #include "refs.h" |
15a1c012 | 7 | #include "run-command.h" |
6b62816c | 8 | #include "remote.h" |
47a59185 | 9 | #include "connect.h" |
9d2e9420 | 10 | #include "url.h" |
a45b5f05 | 11 | #include "string-list.h" |
13eb4626 | 12 | #include "sha1-array.h" |
a5adaced | 13 | #include "transport.h" |
f7192598 | 14 | |
96f1e58f | 15 | static char *server_capabilities; |
5d54cffc | 16 | static const char *parse_feature_value(const char *, const char *, int *); |
211b5f9e | 17 | |
be0b3f82 | 18 | static int check_ref(const char *name, unsigned int flags) |
2718ff09 LT |
19 | { |
20 | if (!flags) | |
21 | return 1; | |
22 | ||
be0b3f82 | 23 | if (!skip_prefix(name, "refs/", &name)) |
2718ff09 LT |
24 | return 0; |
25 | ||
2718ff09 | 26 | /* REF_NORMAL means that we don't want the magic fake tag refs */ |
8d9c5010 | 27 | if ((flags & REF_NORMAL) && check_refname_format(name, 0)) |
2718ff09 LT |
28 | return 0; |
29 | ||
30 | /* REF_HEADS means that we want regular branch heads */ | |
be0b3f82 | 31 | if ((flags & REF_HEADS) && starts_with(name, "heads/")) |
2718ff09 LT |
32 | return 1; |
33 | ||
34 | /* REF_TAGS means that we want tags */ | |
be0b3f82 | 35 | if ((flags & REF_TAGS) && starts_with(name, "tags/")) |
2718ff09 LT |
36 | return 1; |
37 | ||
38 | /* All type bits clear means that we are ok with anything */ | |
39 | return !(flags & ~REF_NORMAL); | |
40 | } | |
41 | ||
4577370e DB |
42 | int check_ref_type(const struct ref *ref, int flags) |
43 | { | |
be0b3f82 | 44 | return check_ref(ref->name, flags); |
4577370e DB |
45 | } |
46 | ||
55e4f936 | 47 | static void die_initial_contact(int unexpected) |
46284dd1 | 48 | { |
55e4f936 | 49 | if (unexpected) |
f2b93b38 | 50 | die(_("The remote end hung up upon initial contact")); |
46284dd1 | 51 | else |
f2b93b38 VA |
52 | die(_("Could not read from remote repository.\n\n" |
53 | "Please make sure you have the correct access rights\n" | |
54 | "and the repository exists.")); | |
46284dd1 HV |
55 | } |
56 | ||
a45b5f05 JH |
57 | static void parse_one_symref_info(struct string_list *symref, const char *val, int len) |
58 | { | |
59 | char *sym, *target; | |
60 | struct string_list_item *item; | |
61 | ||
62 | if (!len) | |
63 | return; /* just "symref" */ | |
64 | /* e.g. "symref=HEAD:refs/heads/master" */ | |
5c0b13f8 | 65 | sym = xmemdupz(val, len); |
a45b5f05 JH |
66 | target = strchr(sym, ':'); |
67 | if (!target) | |
68 | /* just "symref=something" */ | |
69 | goto reject; | |
70 | *(target++) = '\0'; | |
71 | if (check_refname_format(sym, REFNAME_ALLOW_ONELEVEL) || | |
72 | check_refname_format(target, REFNAME_ALLOW_ONELEVEL)) | |
73 | /* "symref=bogus:pair */ | |
74 | goto reject; | |
ef4fe561 | 75 | item = string_list_append_nodup(symref, sym); |
a45b5f05 JH |
76 | item->util = target; |
77 | return; | |
78 | reject: | |
79 | free(sym); | |
80 | return; | |
81 | } | |
82 | ||
83 | static void annotate_refs_with_symref_info(struct ref *ref) | |
84 | { | |
85 | struct string_list symref = STRING_LIST_INIT_DUP; | |
86 | const char *feature_list = server_capabilities; | |
87 | ||
88 | while (feature_list) { | |
89 | int len; | |
90 | const char *val; | |
91 | ||
92 | val = parse_feature_value(feature_list, "symref", &len); | |
93 | if (!val) | |
94 | break; | |
95 | parse_one_symref_info(&symref, val, len); | |
96 | feature_list = val + 1; | |
97 | } | |
3383e199 | 98 | string_list_sort(&symref); |
a45b5f05 JH |
99 | |
100 | for (; ref; ref = ref->next) { | |
101 | struct string_list_item *item; | |
102 | item = string_list_lookup(&symref, ref->name); | |
103 | if (!item) | |
104 | continue; | |
105 | ref->symref = xstrdup((char *)item->util); | |
106 | } | |
107 | string_list_clear(&symref, 0); | |
108 | } | |
109 | ||
d1c133f5 LT |
110 | /* |
111 | * Read all the refs from the other end | |
112 | */ | |
85edf4f5 JK |
113 | struct ref **get_remote_heads(int in, char *src_buf, size_t src_len, |
114 | struct ref **list, unsigned int flags, | |
910650d2 | 115 | struct oid_array *extra_have, |
116 | struct oid_array *shallow_points) | |
d1c133f5 | 117 | { |
a45b5f05 | 118 | struct ref **orig_list = list; |
55e4f936 JN |
119 | |
120 | /* | |
121 | * A hang-up after seeing some response from the other end | |
122 | * means that it is unexpected, as we know the other end is | |
123 | * willing to talk to us. A hang-up before seeing any | |
124 | * response does not necessarily mean an ACL problem, though. | |
125 | */ | |
126 | int saw_response; | |
eb398797 | 127 | int got_dummy_ref_with_capabilities_declaration = 0; |
46284dd1 | 128 | |
d1c133f5 | 129 | *list = NULL; |
55e4f936 | 130 | for (saw_response = 0; ; saw_response = 1) { |
d1c133f5 | 131 | struct ref *ref; |
e96b16cc | 132 | struct object_id old_oid; |
d1c133f5 | 133 | char *name; |
211b5f9e | 134 | int len, name_len; |
74543a04 | 135 | char *buffer = packet_buffer; |
ae021d87 | 136 | const char *arg; |
d1c133f5 | 137 | |
85edf4f5 | 138 | len = packet_read(in, &src_buf, &src_len, |
4981fe75 | 139 | packet_buffer, sizeof(packet_buffer), |
819b929d JK |
140 | PACKET_READ_GENTLE_ON_EOF | |
141 | PACKET_READ_CHOMP_NEWLINE); | |
46284dd1 | 142 | if (len < 0) |
55e4f936 | 143 | die_initial_contact(saw_response); |
46284dd1 | 144 | |
d1c133f5 LT |
145 | if (!len) |
146 | break; | |
d1c133f5 | 147 | |
ae021d87 JK |
148 | if (len > 4 && skip_prefix(buffer, "ERR ", &arg)) |
149 | die("remote error: %s", arg); | |
a8073289 | 150 | |
e96b16cc | 151 | if (len == GIT_SHA1_HEXSZ + strlen("shallow ") && |
152 | skip_prefix(buffer, "shallow ", &arg)) { | |
153 | if (get_oid_hex(arg, &old_oid)) | |
ae021d87 | 154 | die("protocol error: expected shallow sha-1, got '%s'", arg); |
b06dcd7d NTND |
155 | if (!shallow_points) |
156 | die("repository on the other end cannot be shallow"); | |
910650d2 | 157 | oid_array_append(shallow_points, &old_oid); |
b06dcd7d NTND |
158 | continue; |
159 | } | |
160 | ||
e96b16cc | 161 | if (len < GIT_SHA1_HEXSZ + 2 || get_oid_hex(buffer, &old_oid) || |
162 | buffer[GIT_SHA1_HEXSZ] != ' ') | |
d1c133f5 | 163 | die("protocol error: expected sha/ref, got '%s'", buffer); |
e96b16cc | 164 | name = buffer + GIT_SHA1_HEXSZ + 1; |
1a7141ff | 165 | |
211b5f9e | 166 | name_len = strlen(name); |
e96b16cc | 167 | if (len != name_len + GIT_SHA1_HEXSZ + 1) { |
8e0f7003 | 168 | free(server_capabilities); |
9befac47 | 169 | server_capabilities = xstrdup(name + name_len + 1); |
211b5f9e JS |
170 | } |
171 | ||
2ae7f90f | 172 | if (extra_have && !strcmp(name, ".have")) { |
910650d2 | 173 | oid_array_append(extra_have, &old_oid); |
40c155ff JH |
174 | continue; |
175 | } | |
176 | ||
eb398797 JT |
177 | if (!strcmp(name, "capabilities^{}")) { |
178 | if (saw_response) | |
179 | die("protocol error: unexpected capabilities^{}"); | |
180 | if (got_dummy_ref_with_capabilities_declaration) | |
181 | die("protocol error: multiple capabilities^{}"); | |
182 | got_dummy_ref_with_capabilities_declaration = 1; | |
183 | continue; | |
184 | } | |
185 | ||
be0b3f82 | 186 | if (!check_ref(name, flags)) |
cfee10a7 | 187 | continue; |
eb398797 JT |
188 | |
189 | if (got_dummy_ref_with_capabilities_declaration) | |
190 | die("protocol error: unexpected ref after capabilities^{}"); | |
191 | ||
e96b16cc | 192 | ref = alloc_ref(buffer + GIT_SHA1_HEXSZ + 1); |
193 | oidcpy(&ref->old_oid, &old_oid); | |
d1c133f5 LT |
194 | *list = ref; |
195 | list = &ref->next; | |
196 | } | |
a45b5f05 JH |
197 | |
198 | annotate_refs_with_symref_info(*orig_list); | |
199 | ||
d1c133f5 LT |
200 | return list; |
201 | } | |
202 | ||
5d54cffc | 203 | static const char *parse_feature_value(const char *feature_list, const char *feature, int *lenp) |
f47182c8 JH |
204 | { |
205 | int len; | |
206 | ||
207 | if (!feature_list) | |
208 | return NULL; | |
209 | ||
210 | len = strlen(feature); | |
211 | while (*feature_list) { | |
212 | const char *found = strstr(feature_list, feature); | |
213 | if (!found) | |
214 | return NULL; | |
94427108 JK |
215 | if (feature_list == found || isspace(found[-1])) { |
216 | const char *value = found + len; | |
217 | /* feature with no value (e.g., "thin-pack") */ | |
218 | if (!*value || isspace(*value)) { | |
219 | if (lenp) | |
220 | *lenp = 0; | |
221 | return value; | |
222 | } | |
223 | /* feature with a value (e.g., "agent=git/1.2.3") */ | |
224 | else if (*value == '=') { | |
225 | value++; | |
226 | if (lenp) | |
227 | *lenp = strcspn(value, " \t\n"); | |
228 | return value; | |
229 | } | |
230 | /* | |
231 | * otherwise we matched a substring of another feature; | |
232 | * keep looking | |
233 | */ | |
234 | } | |
f47182c8 JH |
235 | feature_list = found + 1; |
236 | } | |
237 | return NULL; | |
211b5f9e JS |
238 | } |
239 | ||
94427108 JK |
240 | int parse_feature_request(const char *feature_list, const char *feature) |
241 | { | |
242 | return !!parse_feature_value(feature_list, feature, NULL); | |
243 | } | |
244 | ||
245 | const char *server_feature_value(const char *feature, int *len) | |
246 | { | |
247 | return parse_feature_value(server_capabilities, feature, len); | |
248 | } | |
249 | ||
250 | int server_supports(const char *feature) | |
251 | { | |
252 | return !!server_feature_value(feature, NULL); | |
253 | } | |
254 | ||
2386d658 LT |
255 | enum protocol { |
256 | PROTO_LOCAL = 1, | |
c59ab2e5 | 257 | PROTO_FILE, |
2386d658 | 258 | PROTO_SSH, |
4b05548f | 259 | PROTO_GIT |
2386d658 LT |
260 | }; |
261 | ||
c59ab2e5 TB |
262 | int url_is_local_not_ssh(const char *url) |
263 | { | |
264 | const char *colon = strchr(url, ':'); | |
265 | const char *slash = strchr(url, '/'); | |
266 | return !colon || (slash && slash < colon) || | |
267 | has_dos_drive_prefix(url); | |
268 | } | |
269 | ||
5610b7c0 TB |
270 | static const char *prot_name(enum protocol protocol) |
271 | { | |
272 | switch (protocol) { | |
273 | case PROTO_LOCAL: | |
c59ab2e5 | 274 | case PROTO_FILE: |
5610b7c0 TB |
275 | return "file"; |
276 | case PROTO_SSH: | |
277 | return "ssh"; | |
278 | case PROTO_GIT: | |
279 | return "git"; | |
280 | default: | |
83e6bda3 | 281 | return "unknown protocol"; |
5610b7c0 TB |
282 | } |
283 | } | |
284 | ||
2386d658 LT |
285 | static enum protocol get_protocol(const char *name) |
286 | { | |
287 | if (!strcmp(name, "ssh")) | |
288 | return PROTO_SSH; | |
289 | if (!strcmp(name, "git")) | |
290 | return PROTO_GIT; | |
07c7782c | 291 | if (!strcmp(name, "git+ssh")) /* deprecated - do not use */ |
c05186cc | 292 | return PROTO_SSH; |
07c7782c | 293 | if (!strcmp(name, "ssh+git")) /* deprecated - do not use */ |
c05186cc | 294 | return PROTO_SSH; |
72a4f4b6 | 295 | if (!strcmp(name, "file")) |
c59ab2e5 | 296 | return PROTO_FILE; |
2386d658 LT |
297 | die("I don't handle protocol '%s'", name); |
298 | } | |
299 | ||
86ceb337 TB |
300 | static char *host_end(char **hoststart, int removebrackets) |
301 | { | |
302 | char *host = *hoststart; | |
303 | char *end; | |
304 | char *start = strstr(host, "@["); | |
305 | if (start) | |
306 | start++; /* Jump over '@' */ | |
307 | else | |
308 | start = host; | |
309 | if (start[0] == '[') { | |
310 | end = strchr(start + 1, ']'); | |
311 | if (end) { | |
312 | if (removebrackets) { | |
313 | *end = 0; | |
314 | memmove(start, start + 1, end - start); | |
315 | end++; | |
316 | } | |
317 | } else | |
318 | end = host; | |
319 | } else | |
320 | end = host; | |
321 | return end; | |
322 | } | |
323 | ||
5ba88448 YH |
324 | #define STR_(s) # s |
325 | #define STR(s) STR_(s) | |
2386d658 | 326 | |
72a534da ML |
327 | static void get_host_and_port(char **host, const char **port) |
328 | { | |
329 | char *colon, *end; | |
86ceb337 | 330 | end = host_end(host, 1); |
72a534da | 331 | colon = strchr(end, ':'); |
72a534da | 332 | if (colon) { |
86ceb337 TB |
333 | long portnr = strtol(colon + 1, &end, 10); |
334 | if (end != colon + 1 && *end == '\0' && 0 <= portnr && portnr < 65536) { | |
335 | *colon = 0; | |
336 | *port = colon + 1; | |
6b6c5f7a TB |
337 | } else if (!colon[1]) { |
338 | *colon = 0; | |
86ceb337 | 339 | } |
72a534da ML |
340 | } |
341 | } | |
342 | ||
e47a8583 EW |
343 | static void enable_keepalive(int sockfd) |
344 | { | |
345 | int ka = 1; | |
346 | ||
347 | if (setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &ka, sizeof(ka)) < 0) | |
348 | fprintf(stderr, "unable to set SO_KEEPALIVE on socket: %s\n", | |
349 | strerror(errno)); | |
350 | } | |
351 | ||
49744d63 | 352 | #ifndef NO_IPV6 |
4c505f71 | 353 | |
ba505322 AR |
354 | static const char *ai_name(const struct addrinfo *ai) |
355 | { | |
785a9857 BK |
356 | static char addr[NI_MAXHOST]; |
357 | if (getnameinfo(ai->ai_addr, ai->ai_addrlen, addr, sizeof(addr), NULL, 0, | |
358 | NI_NUMERICHOST) != 0) | |
5096d490 | 359 | xsnprintf(addr, sizeof(addr), "(unknown)"); |
785a9857 | 360 | |
ba505322 AR |
361 | return addr; |
362 | } | |
363 | ||
5ad312be JL |
364 | /* |
365 | * Returns a connected socket() fd, or else die()s. | |
366 | */ | |
7841ce79 | 367 | static int git_tcp_connect_sock(char *host, int flags) |
2386d658 | 368 | { |
63a995b6 DZ |
369 | struct strbuf error_message = STRBUF_INIT; |
370 | int sockfd = -1; | |
554fe20d | 371 | const char *port = STR(DEFAULT_GIT_PORT); |
5ba88448 YH |
372 | struct addrinfo hints, *ai0, *ai; |
373 | int gai; | |
ba505322 | 374 | int cnt = 0; |
5ba88448 | 375 | |
72a534da ML |
376 | get_host_and_port(&host, &port); |
377 | if (!*port) | |
378 | port = "<none>"; | |
5ba88448 YH |
379 | |
380 | memset(&hints, 0, sizeof(hints)); | |
c915f11e EW |
381 | if (flags & CONNECT_IPV4) |
382 | hints.ai_family = AF_INET; | |
383 | else if (flags & CONNECT_IPV6) | |
384 | hints.ai_family = AF_INET6; | |
5ba88448 YH |
385 | hints.ai_socktype = SOCK_STREAM; |
386 | hints.ai_protocol = IPPROTO_TCP; | |
387 | ||
7841ce79 MT |
388 | if (flags & CONNECT_VERBOSE) |
389 | fprintf(stderr, "Looking up %s ... ", host); | |
390 | ||
5ba88448 YH |
391 | gai = getaddrinfo(host, port, &hints, &ai); |
392 | if (gai) | |
608d48b2 | 393 | die("Unable to look up %s (port %s) (%s)", host, port, gai_strerror(gai)); |
5ba88448 | 394 | |
7841ce79 MT |
395 | if (flags & CONNECT_VERBOSE) |
396 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
397 | ||
e08afecd | 398 | for (ai0 = ai; ai; ai = ai->ai_next, cnt++) { |
5ad312be JL |
399 | sockfd = socket(ai->ai_family, |
400 | ai->ai_socktype, ai->ai_protocol); | |
63a995b6 DZ |
401 | if ((sockfd < 0) || |
402 | (connect(sockfd, ai->ai_addr, ai->ai_addrlen) < 0)) { | |
403 | strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n", | |
404 | host, cnt, ai_name(ai), strerror(errno)); | |
405 | if (0 <= sockfd) | |
406 | close(sockfd); | |
5ba88448 YH |
407 | sockfd = -1; |
408 | continue; | |
2386d658 | 409 | } |
ba505322 AR |
410 | if (flags & CONNECT_VERBOSE) |
411 | fprintf(stderr, "%s ", ai_name(ai)); | |
5ba88448 | 412 | break; |
2386d658 LT |
413 | } |
414 | ||
5ba88448 | 415 | freeaddrinfo(ai0); |
2386d658 | 416 | |
2386d658 | 417 | if (sockfd < 0) |
63a995b6 | 418 | die("unable to connect to %s:\n%s", host, error_message.buf); |
5ba88448 | 419 | |
e47a8583 EW |
420 | enable_keepalive(sockfd); |
421 | ||
7841ce79 MT |
422 | if (flags & CONNECT_VERBOSE) |
423 | fprintf(stderr, "done.\n"); | |
424 | ||
63a995b6 DZ |
425 | strbuf_release(&error_message); |
426 | ||
5ad312be | 427 | return sockfd; |
2386d658 LT |
428 | } |
429 | ||
49744d63 | 430 | #else /* NO_IPV6 */ |
4c505f71 | 431 | |
5ad312be JL |
432 | /* |
433 | * Returns a connected socket() fd, or else die()s. | |
434 | */ | |
7841ce79 | 435 | static int git_tcp_connect_sock(char *host, int flags) |
4c505f71 | 436 | { |
7203a2d1 EFL |
437 | struct strbuf error_message = STRBUF_INIT; |
438 | int sockfd = -1; | |
72a534da ML |
439 | const char *port = STR(DEFAULT_GIT_PORT); |
440 | char *ep; | |
4c505f71 PA |
441 | struct hostent *he; |
442 | struct sockaddr_in sa; | |
443 | char **ap; | |
444 | unsigned int nport; | |
ba505322 | 445 | int cnt; |
4c505f71 | 446 | |
72a534da | 447 | get_host_and_port(&host, &port); |
4c505f71 | 448 | |
7841ce79 MT |
449 | if (flags & CONNECT_VERBOSE) |
450 | fprintf(stderr, "Looking up %s ... ", host); | |
451 | ||
4c505f71 PA |
452 | he = gethostbyname(host); |
453 | if (!he) | |
454 | die("Unable to look up %s (%s)", host, hstrerror(h_errno)); | |
455 | nport = strtoul(port, &ep, 10); | |
456 | if ( ep == port || *ep ) { | |
457 | /* Not numeric */ | |
458 | struct servent *se = getservbyname(port,"tcp"); | |
459 | if ( !se ) | |
d7530708 | 460 | die("Unknown port %s", port); |
4c505f71 PA |
461 | nport = se->s_port; |
462 | } | |
463 | ||
7841ce79 MT |
464 | if (flags & CONNECT_VERBOSE) |
465 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
466 | ||
ba505322 | 467 | for (cnt = 0, ap = he->h_addr_list; *ap; ap++, cnt++) { |
4c505f71 PA |
468 | memset(&sa, 0, sizeof sa); |
469 | sa.sin_family = he->h_addrtype; | |
6573faff | 470 | sa.sin_port = htons(nport); |
c6164218 | 471 | memcpy(&sa.sin_addr, *ap, he->h_length); |
4c505f71 | 472 | |
7203a2d1 EFL |
473 | sockfd = socket(he->h_addrtype, SOCK_STREAM, 0); |
474 | if ((sockfd < 0) || | |
475 | connect(sockfd, (struct sockaddr *)&sa, sizeof sa) < 0) { | |
476 | strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n", | |
ba505322 AR |
477 | host, |
478 | cnt, | |
479 | inet_ntoa(*(struct in_addr *)&sa.sin_addr), | |
7203a2d1 EFL |
480 | strerror(errno)); |
481 | if (0 <= sockfd) | |
482 | close(sockfd); | |
4c505f71 PA |
483 | sockfd = -1; |
484 | continue; | |
485 | } | |
ba505322 AR |
486 | if (flags & CONNECT_VERBOSE) |
487 | fprintf(stderr, "%s ", | |
488 | inet_ntoa(*(struct in_addr *)&sa.sin_addr)); | |
4c505f71 PA |
489 | break; |
490 | } | |
491 | ||
492 | if (sockfd < 0) | |
7203a2d1 | 493 | die("unable to connect to %s:\n%s", host, error_message.buf); |
4c505f71 | 494 | |
e47a8583 EW |
495 | enable_keepalive(sockfd); |
496 | ||
7841ce79 MT |
497 | if (flags & CONNECT_VERBOSE) |
498 | fprintf(stderr, "done.\n"); | |
499 | ||
5ad312be JL |
500 | return sockfd; |
501 | } | |
502 | ||
503 | #endif /* NO_IPV6 */ | |
504 | ||
505 | ||
7841ce79 | 506 | static void git_tcp_connect(int fd[2], char *host, int flags) |
5ad312be | 507 | { |
7841ce79 | 508 | int sockfd = git_tcp_connect_sock(host, flags); |
5ad312be | 509 | |
4c505f71 | 510 | fd[0] = sockfd; |
ec587fde | 511 | fd[1] = dup(sockfd); |
4c505f71 PA |
512 | } |
513 | ||
4c505f71 | 514 | |
96f1e58f | 515 | static char *git_proxy_command; |
f8014776 | 516 | |
ef90d6d4 JS |
517 | static int git_proxy_command_options(const char *var, const char *value, |
518 | void *cb) | |
f8014776 | 519 | { |
e814bc4d | 520 | if (!strcmp(var, "core.gitproxy")) { |
c3df8568 YH |
521 | const char *for_pos; |
522 | int matchlen = -1; | |
523 | int hostlen; | |
15112c95 EFL |
524 | const char *rhost_name = cb; |
525 | int rhost_len = strlen(rhost_name); | |
c3df8568 | 526 | |
e814bc4d | 527 | if (git_proxy_command) |
f8014776 | 528 | return 0; |
c64b9ad0 JH |
529 | if (!value) |
530 | return config_error_nonbool(var); | |
e814bc4d JH |
531 | /* [core] |
532 | * ;# matches www.kernel.org as well | |
533 | * gitproxy = netcatter-1 for kernel.org | |
534 | * gitproxy = netcatter-2 for sample.xz | |
535 | * gitproxy = netcatter-default | |
536 | */ | |
c3df8568 | 537 | for_pos = strstr(value, " for "); |
e814bc4d JH |
538 | if (!for_pos) |
539 | /* matches everybody */ | |
540 | matchlen = strlen(value); | |
541 | else { | |
542 | hostlen = strlen(for_pos + 5); | |
543 | if (rhost_len < hostlen) | |
544 | matchlen = -1; | |
545 | else if (!strncmp(for_pos + 5, | |
546 | rhost_name + rhost_len - hostlen, | |
547 | hostlen) && | |
548 | ((rhost_len == hostlen) || | |
549 | rhost_name[rhost_len - hostlen -1] == '.')) | |
550 | matchlen = for_pos - value; | |
551 | else | |
552 | matchlen = -1; | |
553 | } | |
554 | if (0 <= matchlen) { | |
555 | /* core.gitproxy = none for kernel.org */ | |
a6080a0a | 556 | if (matchlen == 4 && |
e814bc4d JH |
557 | !memcmp(value, "none", 4)) |
558 | matchlen = 0; | |
182af834 | 559 | git_proxy_command = xmemdupz(value, matchlen); |
f8014776 | 560 | } |
e814bc4d | 561 | return 0; |
f8014776 PC |
562 | } |
563 | ||
ef90d6d4 | 564 | return git_default_config(var, value, cb); |
f8014776 PC |
565 | } |
566 | ||
e814bc4d | 567 | static int git_use_proxy(const char *host) |
f8014776 PC |
568 | { |
569 | git_proxy_command = getenv("GIT_PROXY_COMMAND"); | |
15112c95 | 570 | git_config(git_proxy_command_options, (void*)host); |
e814bc4d | 571 | return (git_proxy_command && *git_proxy_command); |
f8014776 PC |
572 | } |
573 | ||
5cbf8246 | 574 | static struct child_process *git_proxy_connect(int fd[2], char *host) |
f8014776 | 575 | { |
554fe20d | 576 | const char *port = STR(DEFAULT_GIT_PORT); |
5cbf8246 | 577 | struct child_process *proxy; |
f8014776 | 578 | |
72a534da | 579 | get_host_and_port(&host, &port); |
f8014776 | 580 | |
483bbd4e RS |
581 | proxy = xmalloc(sizeof(*proxy)); |
582 | child_process_init(proxy); | |
1823bea1 JK |
583 | argv_array_push(&proxy->args, git_proxy_command); |
584 | argv_array_push(&proxy->args, host); | |
585 | argv_array_push(&proxy->args, port); | |
5cbf8246 JK |
586 | proxy->in = -1; |
587 | proxy->out = -1; | |
588 | if (start_command(proxy)) | |
1823bea1 | 589 | die("cannot start proxy %s", git_proxy_command); |
5cbf8246 JK |
590 | fd[0] = proxy->out; /* read from proxy stdout */ |
591 | fd[1] = proxy->in; /* write to proxy stdin */ | |
592 | return proxy; | |
f8014776 PC |
593 | } |
594 | ||
86ceb337 | 595 | static char *get_port(char *host) |
2e776665 LT |
596 | { |
597 | char *end; | |
86ceb337 TB |
598 | char *p = strchr(host, ':'); |
599 | ||
2e776665 | 600 | if (p) { |
8f148253 RS |
601 | long port = strtol(p + 1, &end, 10); |
602 | if (end != p + 1 && *end == '\0' && 0 <= port && port < 65536) { | |
86ceb337 TB |
603 | *p = '\0'; |
604 | return p+1; | |
2e776665 LT |
605 | } |
606 | } | |
607 | ||
608 | return NULL; | |
609 | } | |
610 | ||
f7192598 | 611 | /* |
cabc3c12 JS |
612 | * Extract protocol and relevant parts from the specified connection URL. |
613 | * The caller must free() the returned strings. | |
f7192598 | 614 | */ |
cabc3c12 | 615 | static enum protocol parse_connect_url(const char *url_orig, char **ret_host, |
83b05875 | 616 | char **ret_path) |
f7192598 | 617 | { |
9d2e9420 | 618 | char *url; |
8e76bf3f | 619 | char *host, *path; |
356bece0 | 620 | char *end; |
c59ab2e5 | 621 | int separator = '/'; |
faea9ccb | 622 | enum protocol protocol = PROTO_LOCAL; |
f0b7367c | 623 | |
9d2e9420 JK |
624 | if (is_url(url_orig)) |
625 | url = url_decode(url_orig); | |
626 | else | |
627 | url = xstrdup(url_orig); | |
628 | ||
faea9ccb | 629 | host = strstr(url, "://"); |
eeefa7c9 | 630 | if (host) { |
faea9ccb AE |
631 | *host = '\0'; |
632 | protocol = get_protocol(url); | |
633 | host += 3; | |
356bece0 | 634 | } else { |
f7192598 | 635 | host = url; |
c59ab2e5 TB |
636 | if (!url_is_local_not_ssh(url)) { |
637 | protocol = PROTO_SSH; | |
638 | separator = ':'; | |
639 | } | |
356bece0 YH |
640 | } |
641 | ||
9aa5053d | 642 | /* |
83b05875 TB |
643 | * Don't do destructive transforms as protocol code does |
644 | * '[]' unwrapping in get_host_and_port() | |
9aa5053d | 645 | */ |
86ceb337 | 646 | end = host_end(&host, 0); |
356bece0 | 647 | |
c59ab2e5 | 648 | if (protocol == PROTO_LOCAL) |
72a4f4b6 | 649 | path = end; |
c59ab2e5 TB |
650 | else if (protocol == PROTO_FILE && has_dos_drive_prefix(end)) |
651 | path = end; /* "file://$(pwd)" may be "file://C:/projects/repo" */ | |
652 | else | |
653 | path = strchr(end, separator); | |
2386d658 | 654 | |
faea9ccb AE |
655 | if (!path || !*path) |
656 | die("No path specified. See 'man git-pull' for valid url syntax"); | |
657 | ||
658 | /* | |
659 | * null-terminate hostname and point path to ~ for URL's like this: | |
660 | * ssh://host.xz/~user/repo | |
661 | */ | |
c59ab2e5 TB |
662 | |
663 | end = path; /* Need to \0 terminate host here */ | |
664 | if (separator == ':') | |
665 | path++; /* path starts after ':' */ | |
666 | if (protocol == PROTO_GIT || protocol == PROTO_SSH) { | |
faea9ccb AE |
667 | if (path[1] == '~') |
668 | path++; | |
faea9ccb AE |
669 | } |
670 | ||
c59ab2e5 TB |
671 | path = xstrdup(path); |
672 | *end = '\0'; | |
673 | ||
cabc3c12 | 674 | *ret_host = xstrdup(host); |
c59ab2e5 | 675 | *ret_path = path; |
cabc3c12 JS |
676 | free(url); |
677 | return protocol; | |
678 | } | |
679 | ||
d3180279 | 680 | static struct child_process no_fork = CHILD_PROCESS_INIT; |
cabc3c12 | 681 | |
3c8ede3f NTND |
682 | static const char *get_ssh_command(void) |
683 | { | |
684 | const char *ssh; | |
685 | ||
686 | if ((ssh = getenv("GIT_SSH_COMMAND"))) | |
687 | return ssh; | |
688 | ||
689 | if (!git_config_get_string_const("core.sshcommand", &ssh)) | |
690 | return ssh; | |
691 | ||
692 | return NULL; | |
693 | } | |
694 | ||
486c8e8c | 695 | static int override_ssh_variant(int *port_option, int *needs_batch) |
e2824e47 | 696 | { |
486c8e8c JH |
697 | char *variant; |
698 | ||
699 | variant = xstrdup_or_null(getenv("GIT_SSH_VARIANT")); | |
700 | if (!variant && | |
701 | git_config_get_string("ssh.variant", &variant)) | |
702 | return 0; | |
703 | ||
704 | if (!strcmp(variant, "plink") || !strcmp(variant, "putty")) { | |
705 | *port_option = 'P'; | |
706 | *needs_batch = 0; | |
707 | } else if (!strcmp(variant, "tortoiseplink")) { | |
708 | *port_option = 'P'; | |
709 | *needs_batch = 1; | |
710 | } else { | |
711 | *port_option = 'p'; | |
712 | *needs_batch = 0; | |
713 | } | |
714 | free(variant); | |
715 | return 1; | |
716 | } | |
717 | ||
718 | static void handle_ssh_variant(const char *ssh_command, int is_cmdline, | |
719 | int *port_option, int *needs_batch) | |
720 | { | |
721 | const char *variant; | |
e2824e47 JS |
722 | char *p = NULL; |
723 | ||
486c8e8c JH |
724 | if (override_ssh_variant(port_option, needs_batch)) |
725 | return; | |
726 | ||
727 | if (!is_cmdline) { | |
e2824e47 JS |
728 | p = xstrdup(ssh_command); |
729 | variant = basename(p); | |
730 | } else { | |
731 | const char **ssh_argv; | |
732 | ||
733 | p = xstrdup(ssh_command); | |
22e5ae5c | 734 | if (split_cmdline(p, &ssh_argv) > 0) { |
e2824e47 JS |
735 | variant = basename((char *)ssh_argv[0]); |
736 | /* | |
737 | * At this point, variant points into the buffer | |
738 | * referenced by p, hence we do not need ssh_argv | |
739 | * any longer. | |
740 | */ | |
741 | free(ssh_argv); | |
5d2993b6 JK |
742 | } else { |
743 | free(p); | |
486c8e8c | 744 | return; |
5d2993b6 | 745 | } |
e2824e47 JS |
746 | } |
747 | ||
748 | if (!strcasecmp(variant, "plink") || | |
486c8e8c | 749 | !strcasecmp(variant, "plink.exe")) |
e2824e47 JS |
750 | *port_option = 'P'; |
751 | else if (!strcasecmp(variant, "tortoiseplink") || | |
752 | !strcasecmp(variant, "tortoiseplink.exe")) { | |
753 | *port_option = 'P'; | |
754 | *needs_batch = 1; | |
755 | } | |
756 | free(p); | |
e2824e47 JS |
757 | } |
758 | ||
cabc3c12 JS |
759 | /* |
760 | * This returns a dummy child_process if the transport protocol does not | |
761 | * need fork(2), or a struct child_process object if it does. Once done, | |
762 | * finish the connection with finish_connect() with the value returned from | |
763 | * this function (it is safe to call finish_connect() with NULL to support | |
764 | * the former case). | |
765 | * | |
766 | * If it returns, the connect is successful; it just dies on errors (this | |
767 | * will hopefully be changed in a libification effort, to return NULL when | |
768 | * the connection failed). | |
769 | */ | |
770 | struct child_process *git_connect(int fd[2], const char *url, | |
771 | const char *prog, int flags) | |
772 | { | |
a2036d7e | 773 | char *hostandport, *path; |
cabc3c12 JS |
774 | struct child_process *conn = &no_fork; |
775 | enum protocol protocol; | |
cabc3c12 JS |
776 | struct strbuf cmd = STRBUF_INIT; |
777 | ||
778 | /* Without this we cannot rely on waitpid() to tell | |
779 | * what happened to our children. | |
2e776665 | 780 | */ |
cabc3c12 | 781 | signal(SIGCHLD, SIG_DFL); |
2e776665 | 782 | |
a2036d7e | 783 | protocol = parse_connect_url(url, &hostandport, &path); |
3f55ccab | 784 | if ((flags & CONNECT_DIAG_URL) && (protocol != PROTO_SSH)) { |
5610b7c0 TB |
785 | printf("Diag: url=%s\n", url ? url : "NULL"); |
786 | printf("Diag: protocol=%s\n", prot_name(protocol)); | |
a2036d7e | 787 | printf("Diag: hostandport=%s\n", hostandport ? hostandport : "NULL"); |
5610b7c0 | 788 | printf("Diag: path=%s\n", path ? path : "NULL"); |
a2036d7e TB |
789 | conn = NULL; |
790 | } else if (protocol == PROTO_GIT) { | |
94bc83c5 JK |
791 | /* |
792 | * Set up virtual host information based on where we will | |
793 | * connect, unless the user has overridden us in | |
794 | * the environment. | |
795 | */ | |
796 | char *target_host = getenv("GIT_OVERRIDE_VIRTUAL_HOST"); | |
797 | if (target_host) | |
798 | target_host = xstrdup(target_host); | |
799 | else | |
800 | target_host = xstrdup(hostandport); | |
801 | ||
a5adaced JK |
802 | transport_check_allowed("git"); |
803 | ||
5ad312be JL |
804 | /* These underlying connection commands die() if they |
805 | * cannot connect. | |
806 | */ | |
a2036d7e TB |
807 | if (git_use_proxy(hostandport)) |
808 | conn = git_proxy_connect(fd, hostandport); | |
da2a95b2 | 809 | else |
a2036d7e | 810 | git_tcp_connect(fd, hostandport, flags); |
5ad312be JL |
811 | /* |
812 | * Separate original protocol components prog and path | |
73bb33a9 SP |
813 | * from extended host header with a NUL byte. |
814 | * | |
815 | * Note: Do not add any other headers here! Doing so | |
816 | * will cause older git-daemon servers to crash. | |
5ad312be | 817 | */ |
81c634e9 | 818 | packet_write_fmt(fd[1], |
5ad312be JL |
819 | "%s %s%chost=%s%c", |
820 | prog, path, 0, | |
821 | target_host, 0); | |
822 | free(target_host); | |
a2036d7e | 823 | } else { |
483bbd4e RS |
824 | conn = xmalloc(sizeof(*conn)); |
825 | child_process_init(conn); | |
a2036d7e TB |
826 | |
827 | strbuf_addstr(&cmd, prog); | |
828 | strbuf_addch(&cmd, ' '); | |
829 | sq_quote_buf(&cmd, path); | |
830 | ||
aab40438 JK |
831 | /* remove repo-local variables from the environment */ |
832 | conn->env = local_repo_env; | |
a48b409f | 833 | conn->use_shell = 1; |
a2036d7e | 834 | conn->in = conn->out = -1; |
a2036d7e | 835 | if (protocol == PROTO_SSH) { |
39942766 | 836 | const char *ssh; |
6a4f3a9e JH |
837 | int needs_batch = 0; |
838 | int port_option = 'p'; | |
a2036d7e TB |
839 | char *ssh_host = hostandport; |
840 | const char *port = NULL; | |
a5adaced | 841 | transport_check_allowed("ssh"); |
a2036d7e | 842 | get_host_and_port(&ssh_host, &port); |
a2036d7e | 843 | |
86ceb337 TB |
844 | if (!port) |
845 | port = get_port(ssh_host); | |
42da4840 | 846 | |
3f55ccab TB |
847 | if (flags & CONNECT_DIAG_URL) { |
848 | printf("Diag: url=%s\n", url ? url : "NULL"); | |
849 | printf("Diag: protocol=%s\n", prot_name(protocol)); | |
850 | printf("Diag: userandhost=%s\n", ssh_host ? ssh_host : "NULL"); | |
851 | printf("Diag: port=%s\n", port ? port : "NONE"); | |
852 | printf("Diag: path=%s\n", path ? path : "NULL"); | |
a2036d7e | 853 | |
3f55ccab TB |
854 | free(hostandport); |
855 | free(path); | |
04f20c04 | 856 | free(conn); |
3f55ccab | 857 | return NULL; |
37ee646e | 858 | } |
859 | ||
3c8ede3f | 860 | ssh = get_ssh_command(); |
e2824e47 JS |
861 | if (ssh) |
862 | handle_ssh_variant(ssh, 1, &port_option, | |
863 | &needs_batch); | |
864 | else { | |
a48b409f JK |
865 | /* |
866 | * GIT_SSH is the no-shell version of | |
867 | * GIT_SSH_COMMAND (and must remain so for | |
868 | * historical compatibility). | |
869 | */ | |
870 | conn->use_shell = 0; | |
871 | ||
37ee646e | 872 | ssh = getenv("GIT_SSH"); |
873 | if (!ssh) | |
874 | ssh = "ssh"; | |
e2824e47 JS |
875 | else |
876 | handle_ssh_variant(ssh, 0, | |
877 | &port_option, | |
878 | &needs_batch); | |
37ee646e | 879 | } |
880 | ||
881 | argv_array_push(&conn->args, ssh); | |
c915f11e EW |
882 | if (flags & CONNECT_IPV4) |
883 | argv_array_push(&conn->args, "-4"); | |
884 | else if (flags & CONNECT_IPV6) | |
885 | argv_array_push(&conn->args, "-6"); | |
6a4f3a9e | 886 | if (needs_batch) |
37ee646e | 887 | argv_array_push(&conn->args, "-batch"); |
888 | if (port) { | |
6a4f3a9e JH |
889 | argv_array_pushf(&conn->args, |
890 | "-%c", port_option); | |
37ee646e | 891 | argv_array_push(&conn->args, port); |
a2036d7e | 892 | } |
37ee646e | 893 | argv_array_push(&conn->args, ssh_host); |
c049b61d | 894 | } else { |
a5adaced | 895 | transport_check_allowed("file"); |
4852f723 | 896 | } |
1823bea1 | 897 | argv_array_push(&conn->args, cmd.buf); |
f364cb88 | 898 | |
a2036d7e TB |
899 | if (start_command(conn)) |
900 | die("unable to fork"); | |
f364cb88 | 901 | |
a2036d7e TB |
902 | fd[0] = conn->out; /* read from child's stdout */ |
903 | fd[1] = conn->in; /* write to child's stdin */ | |
904 | strbuf_release(&cmd); | |
905 | } | |
906 | free(hostandport); | |
cabc3c12 | 907 | free(path); |
98158e9c | 908 | return conn; |
f7192598 LT |
909 | } |
910 | ||
7ffe853b JK |
911 | int git_connection_is_socket(struct child_process *conn) |
912 | { | |
913 | return conn == &no_fork; | |
914 | } | |
915 | ||
98158e9c | 916 | int finish_connect(struct child_process *conn) |
f7192598 | 917 | { |
f364cb88 | 918 | int code; |
7ffe853b | 919 | if (!conn || git_connection_is_socket(conn)) |
f42a5c4e FBH |
920 | return 0; |
921 | ||
f364cb88 | 922 | code = finish_command(conn); |
98158e9c | 923 | free(conn); |
f364cb88 | 924 | return code; |
f7192598 | 925 | } |