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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 | } | |
96 | sort_string_list(&symref); | |
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 | ||
40c155ff JH |
160 | if (extra_have && |
161 | name_len == 5 && !memcmp(".have", name, 5)) { | |
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 | ||
5ba88448 YH |
277 | #define STR_(s) # s |
278 | #define STR(s) STR_(s) | |
2386d658 | 279 | |
72a534da ML |
280 | static void get_host_and_port(char **host, const char **port) |
281 | { | |
282 | char *colon, *end; | |
283 | ||
284 | if (*host[0] == '[') { | |
285 | end = strchr(*host + 1, ']'); | |
286 | if (end) { | |
287 | *end = 0; | |
288 | end++; | |
289 | (*host)++; | |
290 | } else | |
291 | end = *host; | |
292 | } else | |
293 | end = *host; | |
294 | colon = strchr(end, ':'); | |
295 | ||
296 | if (colon) { | |
297 | *colon = 0; | |
298 | *port = colon + 1; | |
299 | } | |
300 | } | |
301 | ||
e47a8583 EW |
302 | static void enable_keepalive(int sockfd) |
303 | { | |
304 | int ka = 1; | |
305 | ||
306 | if (setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &ka, sizeof(ka)) < 0) | |
307 | fprintf(stderr, "unable to set SO_KEEPALIVE on socket: %s\n", | |
308 | strerror(errno)); | |
309 | } | |
310 | ||
49744d63 | 311 | #ifndef NO_IPV6 |
4c505f71 | 312 | |
ba505322 AR |
313 | static const char *ai_name(const struct addrinfo *ai) |
314 | { | |
785a9857 BK |
315 | static char addr[NI_MAXHOST]; |
316 | if (getnameinfo(ai->ai_addr, ai->ai_addrlen, addr, sizeof(addr), NULL, 0, | |
317 | NI_NUMERICHOST) != 0) | |
ba505322 | 318 | strcpy(addr, "(unknown)"); |
785a9857 | 319 | |
ba505322 AR |
320 | return addr; |
321 | } | |
322 | ||
5ad312be JL |
323 | /* |
324 | * Returns a connected socket() fd, or else die()s. | |
325 | */ | |
7841ce79 | 326 | static int git_tcp_connect_sock(char *host, int flags) |
2386d658 | 327 | { |
63a995b6 DZ |
328 | struct strbuf error_message = STRBUF_INIT; |
329 | int sockfd = -1; | |
554fe20d | 330 | const char *port = STR(DEFAULT_GIT_PORT); |
5ba88448 YH |
331 | struct addrinfo hints, *ai0, *ai; |
332 | int gai; | |
ba505322 | 333 | int cnt = 0; |
5ba88448 | 334 | |
72a534da ML |
335 | get_host_and_port(&host, &port); |
336 | if (!*port) | |
337 | port = "<none>"; | |
5ba88448 YH |
338 | |
339 | memset(&hints, 0, sizeof(hints)); | |
340 | hints.ai_socktype = SOCK_STREAM; | |
341 | hints.ai_protocol = IPPROTO_TCP; | |
342 | ||
7841ce79 MT |
343 | if (flags & CONNECT_VERBOSE) |
344 | fprintf(stderr, "Looking up %s ... ", host); | |
345 | ||
5ba88448 YH |
346 | gai = getaddrinfo(host, port, &hints, &ai); |
347 | if (gai) | |
608d48b2 | 348 | die("Unable to look up %s (port %s) (%s)", host, port, gai_strerror(gai)); |
5ba88448 | 349 | |
7841ce79 MT |
350 | if (flags & CONNECT_VERBOSE) |
351 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
352 | ||
e08afecd | 353 | for (ai0 = ai; ai; ai = ai->ai_next, cnt++) { |
5ad312be JL |
354 | sockfd = socket(ai->ai_family, |
355 | ai->ai_socktype, ai->ai_protocol); | |
63a995b6 DZ |
356 | if ((sockfd < 0) || |
357 | (connect(sockfd, ai->ai_addr, ai->ai_addrlen) < 0)) { | |
358 | strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n", | |
359 | host, cnt, ai_name(ai), strerror(errno)); | |
360 | if (0 <= sockfd) | |
361 | close(sockfd); | |
5ba88448 YH |
362 | sockfd = -1; |
363 | continue; | |
2386d658 | 364 | } |
ba505322 AR |
365 | if (flags & CONNECT_VERBOSE) |
366 | fprintf(stderr, "%s ", ai_name(ai)); | |
5ba88448 | 367 | break; |
2386d658 LT |
368 | } |
369 | ||
5ba88448 | 370 | freeaddrinfo(ai0); |
2386d658 | 371 | |
2386d658 | 372 | if (sockfd < 0) |
63a995b6 | 373 | die("unable to connect to %s:\n%s", host, error_message.buf); |
5ba88448 | 374 | |
e47a8583 EW |
375 | enable_keepalive(sockfd); |
376 | ||
7841ce79 MT |
377 | if (flags & CONNECT_VERBOSE) |
378 | fprintf(stderr, "done.\n"); | |
379 | ||
63a995b6 DZ |
380 | strbuf_release(&error_message); |
381 | ||
5ad312be | 382 | return sockfd; |
2386d658 LT |
383 | } |
384 | ||
49744d63 | 385 | #else /* NO_IPV6 */ |
4c505f71 | 386 | |
5ad312be JL |
387 | /* |
388 | * Returns a connected socket() fd, or else die()s. | |
389 | */ | |
7841ce79 | 390 | static int git_tcp_connect_sock(char *host, int flags) |
4c505f71 | 391 | { |
7203a2d1 EFL |
392 | struct strbuf error_message = STRBUF_INIT; |
393 | int sockfd = -1; | |
72a534da ML |
394 | const char *port = STR(DEFAULT_GIT_PORT); |
395 | char *ep; | |
4c505f71 PA |
396 | struct hostent *he; |
397 | struct sockaddr_in sa; | |
398 | char **ap; | |
399 | unsigned int nport; | |
ba505322 | 400 | int cnt; |
4c505f71 | 401 | |
72a534da | 402 | get_host_and_port(&host, &port); |
4c505f71 | 403 | |
7841ce79 MT |
404 | if (flags & CONNECT_VERBOSE) |
405 | fprintf(stderr, "Looking up %s ... ", host); | |
406 | ||
4c505f71 PA |
407 | he = gethostbyname(host); |
408 | if (!he) | |
409 | die("Unable to look up %s (%s)", host, hstrerror(h_errno)); | |
410 | nport = strtoul(port, &ep, 10); | |
411 | if ( ep == port || *ep ) { | |
412 | /* Not numeric */ | |
413 | struct servent *se = getservbyname(port,"tcp"); | |
414 | if ( !se ) | |
d7530708 | 415 | die("Unknown port %s", port); |
4c505f71 PA |
416 | nport = se->s_port; |
417 | } | |
418 | ||
7841ce79 MT |
419 | if (flags & CONNECT_VERBOSE) |
420 | fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port); | |
421 | ||
ba505322 | 422 | for (cnt = 0, ap = he->h_addr_list; *ap; ap++, cnt++) { |
4c505f71 PA |
423 | memset(&sa, 0, sizeof sa); |
424 | sa.sin_family = he->h_addrtype; | |
6573faff | 425 | sa.sin_port = htons(nport); |
c6164218 | 426 | memcpy(&sa.sin_addr, *ap, he->h_length); |
4c505f71 | 427 | |
7203a2d1 EFL |
428 | sockfd = socket(he->h_addrtype, SOCK_STREAM, 0); |
429 | if ((sockfd < 0) || | |
430 | connect(sockfd, (struct sockaddr *)&sa, sizeof sa) < 0) { | |
431 | strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n", | |
ba505322 AR |
432 | host, |
433 | cnt, | |
434 | inet_ntoa(*(struct in_addr *)&sa.sin_addr), | |
7203a2d1 EFL |
435 | strerror(errno)); |
436 | if (0 <= sockfd) | |
437 | close(sockfd); | |
4c505f71 PA |
438 | sockfd = -1; |
439 | continue; | |
440 | } | |
ba505322 AR |
441 | if (flags & CONNECT_VERBOSE) |
442 | fprintf(stderr, "%s ", | |
443 | inet_ntoa(*(struct in_addr *)&sa.sin_addr)); | |
4c505f71 PA |
444 | break; |
445 | } | |
446 | ||
447 | if (sockfd < 0) | |
7203a2d1 | 448 | die("unable to connect to %s:\n%s", host, error_message.buf); |
4c505f71 | 449 | |
e47a8583 EW |
450 | enable_keepalive(sockfd); |
451 | ||
7841ce79 MT |
452 | if (flags & CONNECT_VERBOSE) |
453 | fprintf(stderr, "done.\n"); | |
454 | ||
5ad312be JL |
455 | return sockfd; |
456 | } | |
457 | ||
458 | #endif /* NO_IPV6 */ | |
459 | ||
460 | ||
7841ce79 | 461 | static void git_tcp_connect(int fd[2], char *host, int flags) |
5ad312be | 462 | { |
7841ce79 | 463 | int sockfd = git_tcp_connect_sock(host, flags); |
5ad312be | 464 | |
4c505f71 | 465 | fd[0] = sockfd; |
ec587fde | 466 | fd[1] = dup(sockfd); |
4c505f71 PA |
467 | } |
468 | ||
4c505f71 | 469 | |
96f1e58f | 470 | static char *git_proxy_command; |
f8014776 | 471 | |
ef90d6d4 JS |
472 | static int git_proxy_command_options(const char *var, const char *value, |
473 | void *cb) | |
f8014776 | 474 | { |
e814bc4d | 475 | if (!strcmp(var, "core.gitproxy")) { |
c3df8568 YH |
476 | const char *for_pos; |
477 | int matchlen = -1; | |
478 | int hostlen; | |
15112c95 EFL |
479 | const char *rhost_name = cb; |
480 | int rhost_len = strlen(rhost_name); | |
c3df8568 | 481 | |
e814bc4d | 482 | if (git_proxy_command) |
f8014776 | 483 | return 0; |
c64b9ad0 JH |
484 | if (!value) |
485 | return config_error_nonbool(var); | |
e814bc4d JH |
486 | /* [core] |
487 | * ;# matches www.kernel.org as well | |
488 | * gitproxy = netcatter-1 for kernel.org | |
489 | * gitproxy = netcatter-2 for sample.xz | |
490 | * gitproxy = netcatter-default | |
491 | */ | |
c3df8568 | 492 | for_pos = strstr(value, " for "); |
e814bc4d JH |
493 | if (!for_pos) |
494 | /* matches everybody */ | |
495 | matchlen = strlen(value); | |
496 | else { | |
497 | hostlen = strlen(for_pos + 5); | |
498 | if (rhost_len < hostlen) | |
499 | matchlen = -1; | |
500 | else if (!strncmp(for_pos + 5, | |
501 | rhost_name + rhost_len - hostlen, | |
502 | hostlen) && | |
503 | ((rhost_len == hostlen) || | |
504 | rhost_name[rhost_len - hostlen -1] == '.')) | |
505 | matchlen = for_pos - value; | |
506 | else | |
507 | matchlen = -1; | |
508 | } | |
509 | if (0 <= matchlen) { | |
510 | /* core.gitproxy = none for kernel.org */ | |
a6080a0a | 511 | if (matchlen == 4 && |
e814bc4d JH |
512 | !memcmp(value, "none", 4)) |
513 | matchlen = 0; | |
182af834 | 514 | git_proxy_command = xmemdupz(value, matchlen); |
f8014776 | 515 | } |
e814bc4d | 516 | return 0; |
f8014776 PC |
517 | } |
518 | ||
ef90d6d4 | 519 | return git_default_config(var, value, cb); |
f8014776 PC |
520 | } |
521 | ||
e814bc4d | 522 | static int git_use_proxy(const char *host) |
f8014776 PC |
523 | { |
524 | git_proxy_command = getenv("GIT_PROXY_COMMAND"); | |
15112c95 | 525 | git_config(git_proxy_command_options, (void*)host); |
e814bc4d | 526 | return (git_proxy_command && *git_proxy_command); |
f8014776 PC |
527 | } |
528 | ||
5cbf8246 | 529 | static struct child_process *git_proxy_connect(int fd[2], char *host) |
f8014776 | 530 | { |
554fe20d | 531 | const char *port = STR(DEFAULT_GIT_PORT); |
5cbf8246 | 532 | struct child_process *proxy; |
f8014776 | 533 | |
72a534da | 534 | get_host_and_port(&host, &port); |
f8014776 | 535 | |
483bbd4e RS |
536 | proxy = xmalloc(sizeof(*proxy)); |
537 | child_process_init(proxy); | |
1823bea1 JK |
538 | argv_array_push(&proxy->args, git_proxy_command); |
539 | argv_array_push(&proxy->args, host); | |
540 | argv_array_push(&proxy->args, port); | |
5cbf8246 JK |
541 | proxy->in = -1; |
542 | proxy->out = -1; | |
543 | if (start_command(proxy)) | |
1823bea1 | 544 | die("cannot start proxy %s", git_proxy_command); |
5cbf8246 JK |
545 | fd[0] = proxy->out; /* read from proxy stdout */ |
546 | fd[1] = proxy->in; /* write to proxy stdin */ | |
547 | return proxy; | |
f8014776 PC |
548 | } |
549 | ||
83b05875 | 550 | static const char *get_port_numeric(const char *p) |
2e776665 LT |
551 | { |
552 | char *end; | |
2e776665 | 553 | if (p) { |
8f148253 RS |
554 | long port = strtol(p + 1, &end, 10); |
555 | if (end != p + 1 && *end == '\0' && 0 <= port && port < 65536) { | |
83b05875 | 556 | return p; |
2e776665 LT |
557 | } |
558 | } | |
559 | ||
560 | return NULL; | |
561 | } | |
562 | ||
f7192598 | 563 | /* |
cabc3c12 JS |
564 | * Extract protocol and relevant parts from the specified connection URL. |
565 | * The caller must free() the returned strings. | |
f7192598 | 566 | */ |
cabc3c12 | 567 | static enum protocol parse_connect_url(const char *url_orig, char **ret_host, |
83b05875 | 568 | char **ret_path) |
f7192598 | 569 | { |
9d2e9420 | 570 | char *url; |
8e76bf3f | 571 | char *host, *path; |
356bece0 | 572 | char *end; |
c59ab2e5 | 573 | int separator = '/'; |
faea9ccb | 574 | enum protocol protocol = PROTO_LOCAL; |
f0b7367c | 575 | |
9d2e9420 JK |
576 | if (is_url(url_orig)) |
577 | url = url_decode(url_orig); | |
578 | else | |
579 | url = xstrdup(url_orig); | |
580 | ||
faea9ccb | 581 | host = strstr(url, "://"); |
eeefa7c9 | 582 | if (host) { |
faea9ccb AE |
583 | *host = '\0'; |
584 | protocol = get_protocol(url); | |
585 | host += 3; | |
356bece0 | 586 | } else { |
f7192598 | 587 | host = url; |
c59ab2e5 TB |
588 | if (!url_is_local_not_ssh(url)) { |
589 | protocol = PROTO_SSH; | |
590 | separator = ':'; | |
591 | } | |
356bece0 YH |
592 | } |
593 | ||
9aa5053d | 594 | /* |
83b05875 TB |
595 | * Don't do destructive transforms as protocol code does |
596 | * '[]' unwrapping in get_host_and_port() | |
9aa5053d | 597 | */ |
356bece0 YH |
598 | if (host[0] == '[') { |
599 | end = strchr(host + 1, ']'); | |
600 | if (end) { | |
356bece0 | 601 | end++; |
356bece0 YH |
602 | } else |
603 | end = host; | |
604 | } else | |
605 | end = host; | |
606 | ||
c59ab2e5 | 607 | if (protocol == PROTO_LOCAL) |
72a4f4b6 | 608 | path = end; |
c59ab2e5 TB |
609 | else if (protocol == PROTO_FILE && has_dos_drive_prefix(end)) |
610 | path = end; /* "file://$(pwd)" may be "file://C:/projects/repo" */ | |
611 | else | |
612 | path = strchr(end, separator); | |
2386d658 | 613 | |
faea9ccb AE |
614 | if (!path || !*path) |
615 | die("No path specified. See 'man git-pull' for valid url syntax"); | |
616 | ||
617 | /* | |
618 | * null-terminate hostname and point path to ~ for URL's like this: | |
619 | * ssh://host.xz/~user/repo | |
620 | */ | |
c59ab2e5 TB |
621 | |
622 | end = path; /* Need to \0 terminate host here */ | |
623 | if (separator == ':') | |
624 | path++; /* path starts after ':' */ | |
625 | if (protocol == PROTO_GIT || protocol == PROTO_SSH) { | |
faea9ccb AE |
626 | if (path[1] == '~') |
627 | path++; | |
faea9ccb AE |
628 | } |
629 | ||
c59ab2e5 TB |
630 | path = xstrdup(path); |
631 | *end = '\0'; | |
632 | ||
cabc3c12 | 633 | *ret_host = xstrdup(host); |
c59ab2e5 | 634 | *ret_path = path; |
cabc3c12 JS |
635 | free(url); |
636 | return protocol; | |
637 | } | |
638 | ||
d3180279 | 639 | static struct child_process no_fork = CHILD_PROCESS_INIT; |
cabc3c12 JS |
640 | |
641 | /* | |
642 | * This returns a dummy child_process if the transport protocol does not | |
643 | * need fork(2), or a struct child_process object if it does. Once done, | |
644 | * finish the connection with finish_connect() with the value returned from | |
645 | * this function (it is safe to call finish_connect() with NULL to support | |
646 | * the former case). | |
647 | * | |
648 | * If it returns, the connect is successful; it just dies on errors (this | |
649 | * will hopefully be changed in a libification effort, to return NULL when | |
650 | * the connection failed). | |
651 | */ | |
652 | struct child_process *git_connect(int fd[2], const char *url, | |
653 | const char *prog, int flags) | |
654 | { | |
a2036d7e | 655 | char *hostandport, *path; |
cabc3c12 JS |
656 | struct child_process *conn = &no_fork; |
657 | enum protocol protocol; | |
cabc3c12 JS |
658 | struct strbuf cmd = STRBUF_INIT; |
659 | ||
660 | /* Without this we cannot rely on waitpid() to tell | |
661 | * what happened to our children. | |
2e776665 | 662 | */ |
cabc3c12 | 663 | signal(SIGCHLD, SIG_DFL); |
2e776665 | 664 | |
a2036d7e | 665 | protocol = parse_connect_url(url, &hostandport, &path); |
5610b7c0 TB |
666 | if (flags & CONNECT_DIAG_URL) { |
667 | printf("Diag: url=%s\n", url ? url : "NULL"); | |
668 | printf("Diag: protocol=%s\n", prot_name(protocol)); | |
a2036d7e | 669 | printf("Diag: hostandport=%s\n", hostandport ? hostandport : "NULL"); |
5610b7c0 | 670 | printf("Diag: path=%s\n", path ? path : "NULL"); |
a2036d7e TB |
671 | conn = NULL; |
672 | } else if (protocol == PROTO_GIT) { | |
5ad312be JL |
673 | /* These underlying connection commands die() if they |
674 | * cannot connect. | |
675 | */ | |
a2036d7e TB |
676 | char *target_host = xstrdup(hostandport); |
677 | if (git_use_proxy(hostandport)) | |
678 | conn = git_proxy_connect(fd, hostandport); | |
da2a95b2 | 679 | else |
a2036d7e | 680 | git_tcp_connect(fd, hostandport, flags); |
5ad312be JL |
681 | /* |
682 | * Separate original protocol components prog and path | |
73bb33a9 SP |
683 | * from extended host header with a NUL byte. |
684 | * | |
685 | * Note: Do not add any other headers here! Doing so | |
686 | * will cause older git-daemon servers to crash. | |
5ad312be JL |
687 | */ |
688 | packet_write(fd[1], | |
689 | "%s %s%chost=%s%c", | |
690 | prog, path, 0, | |
691 | target_host, 0); | |
692 | free(target_host); | |
a2036d7e | 693 | } else { |
483bbd4e RS |
694 | conn = xmalloc(sizeof(*conn)); |
695 | child_process_init(conn); | |
a2036d7e TB |
696 | |
697 | strbuf_addstr(&cmd, prog); | |
698 | strbuf_addch(&cmd, ' '); | |
699 | sq_quote_buf(&cmd, path); | |
700 | ||
701 | conn->in = conn->out = -1; | |
a2036d7e TB |
702 | if (protocol == PROTO_SSH) { |
703 | const char *ssh = getenv("GIT_SSH"); | |
704 | int putty = ssh && strcasestr(ssh, "plink"); | |
705 | char *ssh_host = hostandport; | |
706 | const char *port = NULL; | |
707 | get_host_and_port(&ssh_host, &port); | |
708 | port = get_port_numeric(port); | |
709 | ||
710 | if (!ssh) ssh = "ssh"; | |
711 | ||
1823bea1 | 712 | argv_array_push(&conn->args, ssh); |
a2036d7e | 713 | if (putty && !strcasestr(ssh, "tortoiseplink")) |
1823bea1 | 714 | argv_array_push(&conn->args, "-batch"); |
a2036d7e TB |
715 | if (port) { |
716 | /* P is for PuTTY, p is for OpenSSH */ | |
1823bea1 JK |
717 | argv_array_push(&conn->args, putty ? "-P" : "-p"); |
718 | argv_array_push(&conn->args, port); | |
a2036d7e | 719 | } |
1823bea1 | 720 | argv_array_push(&conn->args, ssh_host); |
c049b61d | 721 | } else { |
a2036d7e TB |
722 | /* remove repo-local variables from the environment */ |
723 | conn->env = local_repo_env; | |
724 | conn->use_shell = 1; | |
4852f723 | 725 | } |
1823bea1 | 726 | argv_array_push(&conn->args, cmd.buf); |
f364cb88 | 727 | |
a2036d7e TB |
728 | if (start_command(conn)) |
729 | die("unable to fork"); | |
f364cb88 | 730 | |
a2036d7e TB |
731 | fd[0] = conn->out; /* read from child's stdout */ |
732 | fd[1] = conn->in; /* write to child's stdin */ | |
733 | strbuf_release(&cmd); | |
734 | } | |
735 | free(hostandport); | |
cabc3c12 | 736 | free(path); |
98158e9c | 737 | return conn; |
f7192598 LT |
738 | } |
739 | ||
7ffe853b JK |
740 | int git_connection_is_socket(struct child_process *conn) |
741 | { | |
742 | return conn == &no_fork; | |
743 | } | |
744 | ||
98158e9c | 745 | int finish_connect(struct child_process *conn) |
f7192598 | 746 | { |
f364cb88 | 747 | int code; |
7ffe853b | 748 | if (!conn || git_connection_is_socket(conn)) |
f42a5c4e FBH |
749 | return 0; |
750 | ||
f364cb88 | 751 | code = finish_command(conn); |
98158e9c | 752 | free(conn); |
f364cb88 | 753 | return code; |
f7192598 | 754 | } |