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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 | ||
5ba88448 YH |
276 | #define STR_(s) # s |
277 | #define STR(s) STR_(s) | |
2386d658 | 278 | |
72a534da ML |
279 | static void get_host_and_port(char **host, const char **port) |
280 | { | |
281 | char *colon, *end; | |
282 | ||
283 | if (*host[0] == '[') { | |
284 | end = strchr(*host + 1, ']'); | |
285 | if (end) { | |
286 | *end = 0; | |
287 | end++; | |
288 | (*host)++; | |
289 | } else | |
290 | end = *host; | |
291 | } else | |
292 | end = *host; | |
293 | colon = strchr(end, ':'); | |
294 | ||
295 | if (colon) { | |
296 | *colon = 0; | |
297 | *port = colon + 1; | |
298 | } | |
299 | } | |
300 | ||
e47a8583 EW |
301 | static void enable_keepalive(int sockfd) |
302 | { | |
303 | int ka = 1; | |
304 | ||
305 | if (setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &ka, sizeof(ka)) < 0) | |
306 | fprintf(stderr, "unable to set SO_KEEPALIVE on socket: %s\n", | |
307 | strerror(errno)); | |
308 | } | |
309 | ||
49744d63 | 310 | #ifndef NO_IPV6 |
4c505f71 | 311 | |
ba505322 AR |
312 | static const char *ai_name(const struct addrinfo *ai) |
313 | { | |
785a9857 BK |
314 | static char addr[NI_MAXHOST]; |
315 | if (getnameinfo(ai->ai_addr, ai->ai_addrlen, addr, sizeof(addr), NULL, 0, | |
316 | NI_NUMERICHOST) != 0) | |
ba505322 | 317 | strcpy(addr, "(unknown)"); |
785a9857 | 318 | |
ba505322 AR |
319 | return addr; |
320 | } | |
321 | ||
5ad312be JL |
322 | /* |
323 | * Returns a connected socket() fd, or else die()s. | |
324 | */ | |
7841ce79 | 325 | static int git_tcp_connect_sock(char *host, int flags) |
2386d658 | 326 | { |
63a995b6 DZ |
327 | struct strbuf error_message = STRBUF_INIT; |
328 | int sockfd = -1; | |
554fe20d | 329 | const char *port = STR(DEFAULT_GIT_PORT); |
5ba88448 YH |
330 | struct addrinfo hints, *ai0, *ai; |
331 | int gai; | |
ba505322 | 332 | int cnt = 0; |
5ba88448 | 333 | |
72a534da ML |
334 | get_host_and_port(&host, &port); |
335 | if (!*port) | |
336 | port = "<none>"; | |
5ba88448 YH |
337 | |
338 | memset(&hints, 0, sizeof(hints)); | |
339 | hints.ai_socktype = SOCK_STREAM; | |
340 | hints.ai_protocol = IPPROTO_TCP; | |
341 | ||
7841ce79 MT |
342 | if (flags & CONNECT_VERBOSE) |
343 | fprintf(stderr, "Looking up %s ... ", host); | |
344 | ||
5ba88448 YH |
345 | gai = getaddrinfo(host, port, &hints, &ai); |
346 | if (gai) | |
608d48b2 | 347 | die("Unable to look up %s (port %s) (%s)", host, port, gai_strerror(gai)); |
5ba88448 | 348 | |
7841ce79 MT |
349 | if (flags & CONNECT_VERBOSE) |
350 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
351 | ||
e08afecd | 352 | for (ai0 = ai; ai; ai = ai->ai_next, cnt++) { |
5ad312be JL |
353 | sockfd = socket(ai->ai_family, |
354 | ai->ai_socktype, ai->ai_protocol); | |
63a995b6 DZ |
355 | if ((sockfd < 0) || |
356 | (connect(sockfd, ai->ai_addr, ai->ai_addrlen) < 0)) { | |
357 | strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n", | |
358 | host, cnt, ai_name(ai), strerror(errno)); | |
359 | if (0 <= sockfd) | |
360 | close(sockfd); | |
5ba88448 YH |
361 | sockfd = -1; |
362 | continue; | |
2386d658 | 363 | } |
ba505322 AR |
364 | if (flags & CONNECT_VERBOSE) |
365 | fprintf(stderr, "%s ", ai_name(ai)); | |
5ba88448 | 366 | break; |
2386d658 LT |
367 | } |
368 | ||
5ba88448 | 369 | freeaddrinfo(ai0); |
2386d658 | 370 | |
2386d658 | 371 | if (sockfd < 0) |
63a995b6 | 372 | die("unable to connect to %s:\n%s", host, error_message.buf); |
5ba88448 | 373 | |
e47a8583 EW |
374 | enable_keepalive(sockfd); |
375 | ||
7841ce79 MT |
376 | if (flags & CONNECT_VERBOSE) |
377 | fprintf(stderr, "done.\n"); | |
378 | ||
63a995b6 DZ |
379 | strbuf_release(&error_message); |
380 | ||
5ad312be | 381 | return sockfd; |
2386d658 LT |
382 | } |
383 | ||
49744d63 | 384 | #else /* NO_IPV6 */ |
4c505f71 | 385 | |
5ad312be JL |
386 | /* |
387 | * Returns a connected socket() fd, or else die()s. | |
388 | */ | |
7841ce79 | 389 | static int git_tcp_connect_sock(char *host, int flags) |
4c505f71 | 390 | { |
7203a2d1 EFL |
391 | struct strbuf error_message = STRBUF_INIT; |
392 | int sockfd = -1; | |
72a534da ML |
393 | const char *port = STR(DEFAULT_GIT_PORT); |
394 | char *ep; | |
4c505f71 PA |
395 | struct hostent *he; |
396 | struct sockaddr_in sa; | |
397 | char **ap; | |
398 | unsigned int nport; | |
ba505322 | 399 | int cnt; |
4c505f71 | 400 | |
72a534da | 401 | get_host_and_port(&host, &port); |
4c505f71 | 402 | |
7841ce79 MT |
403 | if (flags & CONNECT_VERBOSE) |
404 | fprintf(stderr, "Looking up %s ... ", host); | |
405 | ||
4c505f71 PA |
406 | he = gethostbyname(host); |
407 | if (!he) | |
408 | die("Unable to look up %s (%s)", host, hstrerror(h_errno)); | |
409 | nport = strtoul(port, &ep, 10); | |
410 | if ( ep == port || *ep ) { | |
411 | /* Not numeric */ | |
412 | struct servent *se = getservbyname(port,"tcp"); | |
413 | if ( !se ) | |
d7530708 | 414 | die("Unknown port %s", port); |
4c505f71 PA |
415 | nport = se->s_port; |
416 | } | |
417 | ||
7841ce79 MT |
418 | if (flags & CONNECT_VERBOSE) |
419 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
420 | ||
ba505322 | 421 | for (cnt = 0, ap = he->h_addr_list; *ap; ap++, cnt++) { |
4c505f71 PA |
422 | memset(&sa, 0, sizeof sa); |
423 | sa.sin_family = he->h_addrtype; | |
6573faff | 424 | sa.sin_port = htons(nport); |
c6164218 | 425 | memcpy(&sa.sin_addr, *ap, he->h_length); |
4c505f71 | 426 | |
7203a2d1 EFL |
427 | sockfd = socket(he->h_addrtype, SOCK_STREAM, 0); |
428 | if ((sockfd < 0) || | |
429 | connect(sockfd, (struct sockaddr *)&sa, sizeof sa) < 0) { | |
430 | strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n", | |
ba505322 AR |
431 | host, |
432 | cnt, | |
433 | inet_ntoa(*(struct in_addr *)&sa.sin_addr), | |
7203a2d1 EFL |
434 | strerror(errno)); |
435 | if (0 <= sockfd) | |
436 | close(sockfd); | |
4c505f71 PA |
437 | sockfd = -1; |
438 | continue; | |
439 | } | |
ba505322 AR |
440 | if (flags & CONNECT_VERBOSE) |
441 | fprintf(stderr, "%s ", | |
442 | inet_ntoa(*(struct in_addr *)&sa.sin_addr)); | |
4c505f71 PA |
443 | break; |
444 | } | |
445 | ||
446 | if (sockfd < 0) | |
7203a2d1 | 447 | die("unable to connect to %s:\n%s", host, error_message.buf); |
4c505f71 | 448 | |
e47a8583 EW |
449 | enable_keepalive(sockfd); |
450 | ||
7841ce79 MT |
451 | if (flags & CONNECT_VERBOSE) |
452 | fprintf(stderr, "done.\n"); | |
453 | ||
5ad312be JL |
454 | return sockfd; |
455 | } | |
456 | ||
457 | #endif /* NO_IPV6 */ | |
458 | ||
459 | ||
7841ce79 | 460 | static void git_tcp_connect(int fd[2], char *host, int flags) |
5ad312be | 461 | { |
7841ce79 | 462 | int sockfd = git_tcp_connect_sock(host, flags); |
5ad312be | 463 | |
4c505f71 | 464 | fd[0] = sockfd; |
ec587fde | 465 | fd[1] = dup(sockfd); |
4c505f71 PA |
466 | } |
467 | ||
4c505f71 | 468 | |
96f1e58f | 469 | static char *git_proxy_command; |
f8014776 | 470 | |
ef90d6d4 JS |
471 | static int git_proxy_command_options(const char *var, const char *value, |
472 | void *cb) | |
f8014776 | 473 | { |
e814bc4d | 474 | if (!strcmp(var, "core.gitproxy")) { |
c3df8568 YH |
475 | const char *for_pos; |
476 | int matchlen = -1; | |
477 | int hostlen; | |
15112c95 EFL |
478 | const char *rhost_name = cb; |
479 | int rhost_len = strlen(rhost_name); | |
c3df8568 | 480 | |
e814bc4d | 481 | if (git_proxy_command) |
f8014776 | 482 | return 0; |
c64b9ad0 JH |
483 | if (!value) |
484 | return config_error_nonbool(var); | |
e814bc4d JH |
485 | /* [core] |
486 | * ;# matches www.kernel.org as well | |
487 | * gitproxy = netcatter-1 for kernel.org | |
488 | * gitproxy = netcatter-2 for sample.xz | |
489 | * gitproxy = netcatter-default | |
490 | */ | |
c3df8568 | 491 | for_pos = strstr(value, " for "); |
e814bc4d JH |
492 | if (!for_pos) |
493 | /* matches everybody */ | |
494 | matchlen = strlen(value); | |
495 | else { | |
496 | hostlen = strlen(for_pos + 5); | |
497 | if (rhost_len < hostlen) | |
498 | matchlen = -1; | |
499 | else if (!strncmp(for_pos + 5, | |
500 | rhost_name + rhost_len - hostlen, | |
501 | hostlen) && | |
502 | ((rhost_len == hostlen) || | |
503 | rhost_name[rhost_len - hostlen -1] == '.')) | |
504 | matchlen = for_pos - value; | |
505 | else | |
506 | matchlen = -1; | |
507 | } | |
508 | if (0 <= matchlen) { | |
509 | /* core.gitproxy = none for kernel.org */ | |
a6080a0a | 510 | if (matchlen == 4 && |
e814bc4d JH |
511 | !memcmp(value, "none", 4)) |
512 | matchlen = 0; | |
182af834 | 513 | git_proxy_command = xmemdupz(value, matchlen); |
f8014776 | 514 | } |
e814bc4d | 515 | return 0; |
f8014776 PC |
516 | } |
517 | ||
ef90d6d4 | 518 | return git_default_config(var, value, cb); |
f8014776 PC |
519 | } |
520 | ||
e814bc4d | 521 | static int git_use_proxy(const char *host) |
f8014776 PC |
522 | { |
523 | git_proxy_command = getenv("GIT_PROXY_COMMAND"); | |
15112c95 | 524 | git_config(git_proxy_command_options, (void*)host); |
e814bc4d | 525 | return (git_proxy_command && *git_proxy_command); |
f8014776 PC |
526 | } |
527 | ||
5cbf8246 | 528 | static struct child_process *git_proxy_connect(int fd[2], char *host) |
f8014776 | 529 | { |
554fe20d | 530 | const char *port = STR(DEFAULT_GIT_PORT); |
5cbf8246 | 531 | struct child_process *proxy; |
f8014776 | 532 | |
72a534da | 533 | get_host_and_port(&host, &port); |
f8014776 | 534 | |
483bbd4e RS |
535 | proxy = xmalloc(sizeof(*proxy)); |
536 | child_process_init(proxy); | |
1823bea1 JK |
537 | argv_array_push(&proxy->args, git_proxy_command); |
538 | argv_array_push(&proxy->args, host); | |
539 | argv_array_push(&proxy->args, port); | |
5cbf8246 JK |
540 | proxy->in = -1; |
541 | proxy->out = -1; | |
542 | if (start_command(proxy)) | |
1823bea1 | 543 | die("cannot start proxy %s", git_proxy_command); |
5cbf8246 JK |
544 | fd[0] = proxy->out; /* read from proxy stdout */ |
545 | fd[1] = proxy->in; /* write to proxy stdin */ | |
546 | return proxy; | |
f8014776 PC |
547 | } |
548 | ||
83b05875 | 549 | static const char *get_port_numeric(const char *p) |
2e776665 LT |
550 | { |
551 | char *end; | |
2e776665 | 552 | if (p) { |
8f148253 RS |
553 | long port = strtol(p + 1, &end, 10); |
554 | if (end != p + 1 && *end == '\0' && 0 <= port && port < 65536) { | |
83b05875 | 555 | return p; |
2e776665 LT |
556 | } |
557 | } | |
558 | ||
559 | return NULL; | |
560 | } | |
561 | ||
f7192598 | 562 | /* |
cabc3c12 JS |
563 | * Extract protocol and relevant parts from the specified connection URL. |
564 | * The caller must free() the returned strings. | |
f7192598 | 565 | */ |
cabc3c12 | 566 | static enum protocol parse_connect_url(const char *url_orig, char **ret_host, |
83b05875 | 567 | char **ret_path) |
f7192598 | 568 | { |
9d2e9420 | 569 | char *url; |
8e76bf3f | 570 | char *host, *path; |
356bece0 | 571 | char *end; |
c59ab2e5 | 572 | int separator = '/'; |
faea9ccb | 573 | enum protocol protocol = PROTO_LOCAL; |
f0b7367c | 574 | |
9d2e9420 JK |
575 | if (is_url(url_orig)) |
576 | url = url_decode(url_orig); | |
577 | else | |
578 | url = xstrdup(url_orig); | |
579 | ||
faea9ccb | 580 | host = strstr(url, "://"); |
eeefa7c9 | 581 | if (host) { |
faea9ccb AE |
582 | *host = '\0'; |
583 | protocol = get_protocol(url); | |
584 | host += 3; | |
356bece0 | 585 | } else { |
f7192598 | 586 | host = url; |
c59ab2e5 TB |
587 | if (!url_is_local_not_ssh(url)) { |
588 | protocol = PROTO_SSH; | |
589 | separator = ':'; | |
590 | } | |
356bece0 YH |
591 | } |
592 | ||
9aa5053d | 593 | /* |
83b05875 TB |
594 | * Don't do destructive transforms as protocol code does |
595 | * '[]' unwrapping in get_host_and_port() | |
9aa5053d | 596 | */ |
356bece0 YH |
597 | if (host[0] == '[') { |
598 | end = strchr(host + 1, ']'); | |
599 | if (end) { | |
356bece0 | 600 | end++; |
356bece0 YH |
601 | } else |
602 | end = host; | |
603 | } else | |
604 | end = host; | |
605 | ||
c59ab2e5 | 606 | if (protocol == PROTO_LOCAL) |
72a4f4b6 | 607 | path = end; |
c59ab2e5 TB |
608 | else if (protocol == PROTO_FILE && has_dos_drive_prefix(end)) |
609 | path = end; /* "file://$(pwd)" may be "file://C:/projects/repo" */ | |
610 | else | |
611 | path = strchr(end, separator); | |
2386d658 | 612 | |
faea9ccb AE |
613 | if (!path || !*path) |
614 | die("No path specified. See 'man git-pull' for valid url syntax"); | |
615 | ||
616 | /* | |
617 | * null-terminate hostname and point path to ~ for URL's like this: | |
618 | * ssh://host.xz/~user/repo | |
619 | */ | |
c59ab2e5 TB |
620 | |
621 | end = path; /* Need to \0 terminate host here */ | |
622 | if (separator == ':') | |
623 | path++; /* path starts after ':' */ | |
624 | if (protocol == PROTO_GIT || protocol == PROTO_SSH) { | |
faea9ccb AE |
625 | if (path[1] == '~') |
626 | path++; | |
faea9ccb AE |
627 | } |
628 | ||
c59ab2e5 TB |
629 | path = xstrdup(path); |
630 | *end = '\0'; | |
631 | ||
cabc3c12 | 632 | *ret_host = xstrdup(host); |
c59ab2e5 | 633 | *ret_path = path; |
cabc3c12 JS |
634 | free(url); |
635 | return protocol; | |
636 | } | |
637 | ||
d3180279 | 638 | static struct child_process no_fork = CHILD_PROCESS_INIT; |
cabc3c12 JS |
639 | |
640 | /* | |
641 | * This returns a dummy child_process if the transport protocol does not | |
642 | * need fork(2), or a struct child_process object if it does. Once done, | |
643 | * finish the connection with finish_connect() with the value returned from | |
644 | * this function (it is safe to call finish_connect() with NULL to support | |
645 | * the former case). | |
646 | * | |
647 | * If it returns, the connect is successful; it just dies on errors (this | |
648 | * will hopefully be changed in a libification effort, to return NULL when | |
649 | * the connection failed). | |
650 | */ | |
651 | struct child_process *git_connect(int fd[2], const char *url, | |
652 | const char *prog, int flags) | |
653 | { | |
a2036d7e | 654 | char *hostandport, *path; |
cabc3c12 JS |
655 | struct child_process *conn = &no_fork; |
656 | enum protocol protocol; | |
cabc3c12 JS |
657 | struct strbuf cmd = STRBUF_INIT; |
658 | ||
659 | /* Without this we cannot rely on waitpid() to tell | |
660 | * what happened to our children. | |
2e776665 | 661 | */ |
cabc3c12 | 662 | signal(SIGCHLD, SIG_DFL); |
2e776665 | 663 | |
a2036d7e | 664 | protocol = parse_connect_url(url, &hostandport, &path); |
5610b7c0 TB |
665 | if (flags & CONNECT_DIAG_URL) { |
666 | printf("Diag: url=%s\n", url ? url : "NULL"); | |
667 | printf("Diag: protocol=%s\n", prot_name(protocol)); | |
a2036d7e | 668 | printf("Diag: hostandport=%s\n", hostandport ? hostandport : "NULL"); |
5610b7c0 | 669 | printf("Diag: path=%s\n", path ? path : "NULL"); |
a2036d7e TB |
670 | conn = NULL; |
671 | } else if (protocol == PROTO_GIT) { | |
94bc83c5 JK |
672 | /* |
673 | * Set up virtual host information based on where we will | |
674 | * connect, unless the user has overridden us in | |
675 | * the environment. | |
676 | */ | |
677 | char *target_host = getenv("GIT_OVERRIDE_VIRTUAL_HOST"); | |
678 | if (target_host) | |
679 | target_host = xstrdup(target_host); | |
680 | else | |
681 | target_host = xstrdup(hostandport); | |
682 | ||
5ad312be JL |
683 | /* These underlying connection commands die() if they |
684 | * cannot connect. | |
685 | */ | |
a2036d7e TB |
686 | if (git_use_proxy(hostandport)) |
687 | conn = git_proxy_connect(fd, hostandport); | |
da2a95b2 | 688 | else |
a2036d7e | 689 | git_tcp_connect(fd, hostandport, flags); |
5ad312be JL |
690 | /* |
691 | * Separate original protocol components prog and path | |
73bb33a9 SP |
692 | * from extended host header with a NUL byte. |
693 | * | |
694 | * Note: Do not add any other headers here! Doing so | |
695 | * will cause older git-daemon servers to crash. | |
5ad312be JL |
696 | */ |
697 | packet_write(fd[1], | |
698 | "%s %s%chost=%s%c", | |
699 | prog, path, 0, | |
700 | target_host, 0); | |
701 | free(target_host); | |
a2036d7e | 702 | } else { |
483bbd4e RS |
703 | conn = xmalloc(sizeof(*conn)); |
704 | child_process_init(conn); | |
a2036d7e TB |
705 | |
706 | strbuf_addstr(&cmd, prog); | |
707 | strbuf_addch(&cmd, ' '); | |
708 | sq_quote_buf(&cmd, path); | |
709 | ||
710 | conn->in = conn->out = -1; | |
a2036d7e | 711 | if (protocol == PROTO_SSH) { |
39942766 TQ |
712 | const char *ssh; |
713 | int putty; | |
a2036d7e TB |
714 | char *ssh_host = hostandport; |
715 | const char *port = NULL; | |
716 | get_host_and_port(&ssh_host, &port); | |
717 | port = get_port_numeric(port); | |
718 | ||
39942766 TQ |
719 | ssh = getenv("GIT_SSH_COMMAND"); |
720 | if (ssh) { | |
721 | conn->use_shell = 1; | |
722 | putty = 0; | |
723 | } else { | |
724 | ssh = getenv("GIT_SSH"); | |
725 | if (!ssh) | |
726 | ssh = "ssh"; | |
727 | putty = !!strcasestr(ssh, "plink"); | |
728 | } | |
a2036d7e | 729 | |
1823bea1 | 730 | argv_array_push(&conn->args, ssh); |
a2036d7e | 731 | if (putty && !strcasestr(ssh, "tortoiseplink")) |
1823bea1 | 732 | argv_array_push(&conn->args, "-batch"); |
a2036d7e TB |
733 | if (port) { |
734 | /* P is for PuTTY, p is for OpenSSH */ | |
1823bea1 JK |
735 | argv_array_push(&conn->args, putty ? "-P" : "-p"); |
736 | argv_array_push(&conn->args, port); | |
a2036d7e | 737 | } |
1823bea1 | 738 | argv_array_push(&conn->args, ssh_host); |
c049b61d | 739 | } else { |
a2036d7e TB |
740 | /* remove repo-local variables from the environment */ |
741 | conn->env = local_repo_env; | |
742 | conn->use_shell = 1; | |
4852f723 | 743 | } |
1823bea1 | 744 | argv_array_push(&conn->args, cmd.buf); |
f364cb88 | 745 | |
a2036d7e TB |
746 | if (start_command(conn)) |
747 | die("unable to fork"); | |
f364cb88 | 748 | |
a2036d7e TB |
749 | fd[0] = conn->out; /* read from child's stdout */ |
750 | fd[1] = conn->in; /* write to child's stdin */ | |
751 | strbuf_release(&cmd); | |
752 | } | |
753 | free(hostandport); | |
cabc3c12 | 754 | free(path); |
98158e9c | 755 | return conn; |
f7192598 LT |
756 | } |
757 | ||
7ffe853b JK |
758 | int git_connection_is_socket(struct child_process *conn) |
759 | { | |
760 | return conn == &no_fork; | |
761 | } | |
762 | ||
98158e9c | 763 | int finish_connect(struct child_process *conn) |
f7192598 | 764 | { |
f364cb88 | 765 | int code; |
7ffe853b | 766 | if (!conn || git_connection_is_socket(conn)) |
f42a5c4e FBH |
767 | return 0; |
768 | ||
f364cb88 | 769 | code = finish_command(conn); |
98158e9c | 770 | free(conn); |
f364cb88 | 771 | return code; |
f7192598 | 772 | } |