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chromium / external / github.com / git / git / refs/tags/v2.1.1 / . / connect.c
blob: 5047402a1aade7a443f55999550ae4542189ef01 [file] [log] [blame]
Jason Riedy731043f2006-01-25 20:38:36[diff] [blame]1#include "git-compat-util.h"
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]2#include "cache.h"
Linus Torvalds41cb7482005-07-05 22:44:09[diff] [blame]3#include "pkt-line.h"
Junio C Hamanob10d0ec2005-07-08 07:02:52[diff] [blame]4#include "quote.h"
Junio C Hamano6abf5c02005-10-16 07:25:26[diff] [blame]5#include "refs.h"
Shawn O. Pearce15a1c0122007-03-12 23:00:19[diff] [blame]6#include "run-command.h"
Daniel Barkalow6b628162007-05-12 15:45:59[diff] [blame]7#include "remote.h"
Junio C Hamano47a59182013-07-08 20:56:53[diff] [blame]8#include "connect.h"
Jeff King9d2e9422010-05-23 09:19:44[diff] [blame]9#include "url.h"
Junio C Hamanoa45b5f02013-09-18 02:10:31[diff] [blame]10#include "string-list.h"
Nguyễn ThĂĄi Ngọc Duy13eb4622013-12-05 13:02:29[diff] [blame]11#include "sha1-array.h"
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]12
David Rientjes96f1e582006-08-15 17:23:48[diff] [blame]13static char *server_capabilities;
Junio C Hamano5d54cff2013-09-17 23:29:28[diff] [blame]14static const char *parse_feature_value(const char *, const char *, int *);
Johannes Schindelin211b5f92005-10-28 02:48:54[diff] [blame]15
Linus Torvalds2718ff02006-07-04 19:29:10[diff] [blame]16static int check_ref(const char *name, int len, unsigned int flags)
17{
18 if (!flags)
19 return 1;
20
Andy Whitcroftc41e20b2006-09-05 19:00:17[diff] [blame]21 if (len < 5 || memcmp(name, "refs/", 5))
Linus Torvalds2718ff02006-07-04 19:29:10[diff] [blame]22 return 0;
23
24 /* Skip the "refs/" part */
25 name += 5;
26 len -= 5;
27
28 /* REF_NORMAL means that we don't want the magic fake tag refs */
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]29 if ((flags & REF_NORMAL) && check_refname_format(name, 0))
Linus Torvalds2718ff02006-07-04 19:29:10[diff] [blame]30 return 0;
31
32 /* REF_HEADS means that we want regular branch heads */
33 if ((flags & REF_HEADS) && !memcmp(name, "heads/", 6))
34 return 1;
35
36 /* REF_TAGS means that we want tags */
37 if ((flags & REF_TAGS) && !memcmp(name, "tags/", 5))
38 return 1;
39
40 /* All type bits clear means that we are ok with anything */
41 return !(flags & ~REF_NORMAL);
42}
43
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]44int check_ref_type(const struct ref *ref, int flags)
45{
46 return check_ref(ref->name, strlen(ref->name), flags);
47}
48
Heiko Voigt46284dd2012-06-19 18:24:50[diff] [blame]49static void die_initial_contact(int got_at_least_one_head)
50{
51 if (got_at_least_one_head)
52 die("The remote end hung up upon initial contact");
53 else
54 die("Could not read from remote repository.\n\n"
55 "Please make sure you have the correct access rights\n"
56 "and the repository exists.");
57}
58
Junio C Hamanoa45b5f02013-09-18 02:10:31[diff] [blame]59static void parse_one_symref_info(struct string_list *symref, const char *val, int len)
60{
61 char *sym, *target;
62 struct string_list_item *item;
63
64 if (!len)
65 return; /* just "symref" */
66 /* e.g. "symref=HEAD:refs/heads/master" */
René Scharfe5c0b13f2014-07-19 15:35:34[diff] [blame]67 sym = xmemdupz(val, len);
Junio C Hamanoa45b5f02013-09-18 02:10:31[diff] [blame]68 target = strchr(sym, ':');
69 if (!target)
70 /* just "symref=something" */
71 goto reject;
72 *(target++) = '\0';
73 if (check_refname_format(sym, REFNAME_ALLOW_ONELEVEL) ||
74 check_refname_format(target, REFNAME_ALLOW_ONELEVEL))
75 /* "symref=bogus:pair */
76 goto reject;
77 item = string_list_append(symref, sym);
78 item->util = target;
79 return;
80reject:
81 free(sym);
82 return;
83}
84
85static void annotate_refs_with_symref_info(struct ref *ref)
86{
87 struct string_list symref = STRING_LIST_INIT_DUP;
88 const char *feature_list = server_capabilities;
89
90 while (feature_list) {
91 int len;
92 const char *val;
93
94 val = parse_feature_value(feature_list, "symref", &len);
95 if (!val)
96 break;
97 parse_one_symref_info(&symref, val, len);
98 feature_list = val + 1;
99 }
100 sort_string_list(&symref);
101
102 for (; ref; ref = ref->next) {
103 struct string_list_item *item;
104 item = string_list_lookup(&symref, ref->name);
105 if (!item)
106 continue;
107 ref->symref = xstrdup((char *)item->util);
108 }
109 string_list_clear(&symref, 0);
110}
111
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]112/*
113 * Read all the refs from the other end
114 */
Jeff King85edf4f2013-02-20 20:06:45[diff] [blame]115struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
116 struct ref **list, unsigned int flags,
Nguyễn ThĂĄi Ngọc Duyb06dcd72013-12-05 13:02:33[diff] [blame]117 struct sha1_array *extra_have,
118 struct sha1_array *shallow_points)
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]119{
Junio C Hamanoa45b5f02013-09-18 02:10:31[diff] [blame]120 struct ref **orig_list = list;
Heiko Voigt46284dd2012-06-19 18:24:50[diff] [blame]121 int got_at_least_one_head = 0;
122
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]123 *list = NULL;
124 for (;;) {
125 struct ref *ref;
126 unsigned char old_sha1[20];
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]127 char *name;
Johannes Schindelin211b5f92005-10-28 02:48:54[diff] [blame]128 int len, name_len;
Jeff King74543a02013-02-20 20:02:57[diff] [blame]129 char *buffer = packet_buffer;
Jeff Kingae021d82014-06-18 19:47:50[diff] [blame]130 const char *arg;
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]131
Jeff King85edf4f2013-02-20 20:06:45[diff] [blame]132 len = packet_read(in, &src_buf, &src_len,
Jeff King4981fe72013-02-23 22:31:34[diff] [blame]133 packet_buffer, sizeof(packet_buffer),
Jeff King819b9292013-02-20 20:02:28[diff] [blame]134 PACKET_READ_GENTLE_ON_EOF |
135 PACKET_READ_CHOMP_NEWLINE);
Heiko Voigt46284dd2012-06-19 18:24:50[diff] [blame]136 if (len < 0)
137 die_initial_contact(got_at_least_one_head);
138
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]139 if (!len)
140 break;
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]141
Jeff Kingae021d82014-06-18 19:47:50[diff] [blame]142 if (len > 4 && skip_prefix(buffer, "ERR ", &arg))
143 die("remote error: %s", arg);
Tom Preston-Wernera8073282008-11-01 18:44:45[diff] [blame]144
Jeff Kingae021d82014-06-18 19:47:50[diff] [blame]145 if (len == 48 && skip_prefix(buffer, "shallow ", &arg)) {
146 if (get_sha1_hex(arg, old_sha1))
147 die("protocol error: expected shallow sha-1, got '%s'", arg);
Nguyễn ThĂĄi Ngọc Duyb06dcd72013-12-05 13:02:33[diff] [blame]148 if (!shallow_points)
149 die("repository on the other end cannot be shallow");
150 sha1_array_append(shallow_points, old_sha1);
151 continue;
152 }
153
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]154 if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ')
155 die("protocol error: expected sha/ref, got '%s'", buffer);
156 name = buffer + 41;
Junio C Hamano1a7141f2005-10-14 01:57:40[diff] [blame]157
Johannes Schindelin211b5f92005-10-28 02:48:54[diff] [blame]158 name_len = strlen(name);
159 if (len != name_len + 41) {
Jim Meyering8e0f7002008-01-31 17:26:32[diff] [blame]160 free(server_capabilities);
Shawn Pearce9befac42006-09-02 04:16:31[diff] [blame]161 server_capabilities = xstrdup(name + name_len + 1);
Johannes Schindelin211b5f92005-10-28 02:48:54[diff] [blame]162 }
163
Junio C Hamano40c155f2008-09-09 08:27:09[diff] [blame]164 if (extra_have &&
165 name_len == 5 && !memcmp(".have", name, 5)) {
Nguyễn ThĂĄi Ngọc Duy13eb4622013-12-05 13:02:29[diff] [blame]166 sha1_array_append(extra_have, old_sha1);
Junio C Hamano40c155f2008-09-09 08:27:09[diff] [blame]167 continue;
168 }
169
Linus Torvalds2718ff02006-07-04 19:29:10[diff] [blame]170 if (!check_ref(name, name_len, flags))
Junio C Hamanocfee10a2005-12-26 07:18:37[diff] [blame]171 continue;
René Scharfe59c69c02008-10-18 08:44:18[diff] [blame]172 ref = alloc_ref(buffer + 41);
Shawn Pearcee7024962006-08-23 06:49:00[diff] [blame]173 hashcpy(ref->old_sha1, old_sha1);
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]174 *list = ref;
175 list = &ref->next;
Heiko Voigt46284dd2012-06-19 18:24:50[diff] [blame]176 got_at_least_one_head = 1;
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]177 }
Junio C Hamanoa45b5f02013-09-18 02:10:31[diff] [blame]178
179 annotate_refs_with_symref_info(*orig_list);
180
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]181 return list;
182}
183
Junio C Hamano5d54cff2013-09-17 23:29:28[diff] [blame]184static const char *parse_feature_value(const char *feature_list, const char *feature, int *lenp)
Junio C Hamanof47182c2012-01-08 21:06:19[diff] [blame]185{
186 int len;
187
188 if (!feature_list)
189 return NULL;
190
191 len = strlen(feature);
192 while (*feature_list) {
193 const char *found = strstr(feature_list, feature);
194 if (!found)
195 return NULL;
Jeff King94427102012-08-14 01:59:27[diff] [blame]196 if (feature_list == found || isspace(found[-1])) {
197 const char *value = found + len;
198 /* feature with no value (e.g., "thin-pack") */
199 if (!*value || isspace(*value)) {
200 if (lenp)
201 *lenp = 0;
202 return value;
203 }
204 /* feature with a value (e.g., "agent=git/1.2.3") */
205 else if (*value == '=') {
206 value++;
207 if (lenp)
208 *lenp = strcspn(value, " \t\n");
209 return value;
210 }
211 /*
212 * otherwise we matched a substring of another feature;
213 * keep looking
214 */
215 }
Junio C Hamanof47182c2012-01-08 21:06:19[diff] [blame]216 feature_list = found + 1;
217 }
218 return NULL;
Johannes Schindelin211b5f92005-10-28 02:48:54[diff] [blame]219}
220
Jeff King94427102012-08-14 01:59:27[diff] [blame]221int parse_feature_request(const char *feature_list, const char *feature)
222{
223 return !!parse_feature_value(feature_list, feature, NULL);
224}
225
226const char *server_feature_value(const char *feature, int *len)
227{
228 return parse_feature_value(server_capabilities, feature, len);
229}
230
231int server_supports(const char *feature)
232{
233 return !!server_feature_value(feature, NULL);
234}
235
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]236enum protocol {
237 PROTO_LOCAL = 1,
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]238 PROTO_FILE,
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]239 PROTO_SSH,
Gary V. Vaughan4b055482010-05-14 09:31:35[diff] [blame]240 PROTO_GIT
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]241};
242
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]243int url_is_local_not_ssh(const char *url)
244{
245 const char *colon = strchr(url, ':');
246 const char *slash = strchr(url, '/');
247 return !colon || (slash && slash < colon) ||
248 has_dos_drive_prefix(url);
249}
250
Torsten Bögershausen5610b7c2013-11-28 19:49:17[diff] [blame]251static const char *prot_name(enum protocol protocol)
252{
253 switch (protocol) {
254 case PROTO_LOCAL:
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]255 case PROTO_FILE:
Torsten Bögershausen5610b7c2013-11-28 19:49:17[diff] [blame]256 return "file";
257 case PROTO_SSH:
258 return "ssh";
259 case PROTO_GIT:
260 return "git";
261 default:
262 return "unkown protocol";
263 }
264}
265
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]266static enum protocol get_protocol(const char *name)
267{
268 if (!strcmp(name, "ssh"))
269 return PROTO_SSH;
270 if (!strcmp(name, "git"))
271 return PROTO_GIT;
Linus Torvaldsc05186c2005-10-15 00:14:56[diff] [blame]272 if (!strcmp(name, "git+ssh"))
273 return PROTO_SSH;
274 if (!strcmp(name, "ssh+git"))
275 return PROTO_SSH;
Linus Torvalds72a4f4b2007-08-01 17:03:37[diff] [blame]276 if (!strcmp(name, "file"))
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]277 return PROTO_FILE;
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]278 die("I don't handle protocol '%s'", name);
279}
280
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]281#define STR_(s) # s
282#define STR(s) STR_(s)
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]283
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]284static void get_host_and_port(char **host, const char **port)
285{
286 char *colon, *end;
287
288 if (*host[0] == '[') {
289 end = strchr(*host + 1, ']');
290 if (end) {
291 *end = 0;
292 end++;
293 (*host)++;
294 } else
295 end = *host;
296 } else
297 end = *host;
298 colon = strchr(end, ':');
299
300 if (colon) {
301 *colon = 0;
302 *port = colon + 1;
303 }
304}
305
Eric Wonge47a8582011-12-06 04:39:36[diff] [blame]306static void enable_keepalive(int sockfd)
307{
308 int ka = 1;
309
310 if (setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &ka, sizeof(ka)) < 0)
311 fprintf(stderr, "unable to set SO_KEEPALIVE on socket: %s\n",
312 strerror(errno));
313}
314
hpa49744d62005-09-28 23:52:21[diff] [blame]315#ifndef NO_IPV6
hpa4c505f72005-09-28 23:37:58[diff] [blame]316
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]317static const char *ai_name(const struct addrinfo *ai)
318{
Benjamin Kramer785a9852009-04-24 12:16:41[diff] [blame]319 static char addr[NI_MAXHOST];
320 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, addr, sizeof(addr), NULL, 0,
321 NI_NUMERICHOST) != 0)
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]322 strcpy(addr, "(unknown)");
Benjamin Kramer785a9852009-04-24 12:16:41[diff] [blame]323
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]324 return addr;
325}
326
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]327/*
328 * Returns a connected socket() fd, or else die()s.
329 */
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]330static int git_tcp_connect_sock(char *host, int flags)
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]331{
Dave Zarzycki63a995b2011-07-12 16:28:34[diff] [blame]332 struct strbuf error_message = STRBUF_INIT;
333 int sockfd = -1;
Timo Hirvonen554fe202006-06-28 09:04:39[diff] [blame]334 const char *port = STR(DEFAULT_GIT_PORT);
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]335 struct addrinfo hints, *ai0, *ai;
336 int gai;
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]337 int cnt = 0;
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]338
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]339 get_host_and_port(&host, &port);
340 if (!*port)
341 port = "<none>";
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]342
343 memset(&hints, 0, sizeof(hints));
344 hints.ai_socktype = SOCK_STREAM;
345 hints.ai_protocol = IPPROTO_TCP;
346
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]347 if (flags & CONNECT_VERBOSE)
348 fprintf(stderr, "Looking up %s ... ", host);
349
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]350 gai = getaddrinfo(host, port, &hints, &ai);
351 if (gai)
Linus Torvalds608d48b2007-03-27 16:50:20[diff] [blame]352 die("Unable to look up %s (port %s) (%s)", host, port, gai_strerror(gai));
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]353
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]354 if (flags & CONNECT_VERBOSE)
355 fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port);
356
Erik Faye-Lunde08afec2011-08-01 11:16:09[diff] [blame]357 for (ai0 = ai; ai; ai = ai->ai_next, cnt++) {
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]358 sockfd = socket(ai->ai_family,
359 ai->ai_socktype, ai->ai_protocol);
Dave Zarzycki63a995b2011-07-12 16:28:34[diff] [blame]360 if ((sockfd < 0) ||
361 (connect(sockfd, ai->ai_addr, ai->ai_addrlen) < 0)) {
362 strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n",
363 host, cnt, ai_name(ai), strerror(errno));
364 if (0 <= sockfd)
365 close(sockfd);
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]366 sockfd = -1;
367 continue;
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]368 }
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]369 if (flags & CONNECT_VERBOSE)
370 fprintf(stderr, "%s ", ai_name(ai));
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]371 break;
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]372 }
373
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]374 freeaddrinfo(ai0);
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]375
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]376 if (sockfd < 0)
Dave Zarzycki63a995b2011-07-12 16:28:34[diff] [blame]377 die("unable to connect to %s:\n%s", host, error_message.buf);
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]378
Eric Wonge47a8582011-12-06 04:39:36[diff] [blame]379 enable_keepalive(sockfd);
380
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]381 if (flags & CONNECT_VERBOSE)
382 fprintf(stderr, "done.\n");
383
Dave Zarzycki63a995b2011-07-12 16:28:34[diff] [blame]384 strbuf_release(&error_message);
385
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]386 return sockfd;
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]387}
388
hpa49744d62005-09-28 23:52:21[diff] [blame]389#else /* NO_IPV6 */
hpa4c505f72005-09-28 23:37:58[diff] [blame]390
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]391/*
392 * Returns a connected socket() fd, or else die()s.
393 */
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]394static int git_tcp_connect_sock(char *host, int flags)
hpa4c505f72005-09-28 23:37:58[diff] [blame]395{
Erik Faye-Lund7203a2d2011-08-01 11:16:10[diff] [blame]396 struct strbuf error_message = STRBUF_INIT;
397 int sockfd = -1;
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]398 const char *port = STR(DEFAULT_GIT_PORT);
399 char *ep;
hpa4c505f72005-09-28 23:37:58[diff] [blame]400 struct hostent *he;
401 struct sockaddr_in sa;
402 char **ap;
403 unsigned int nport;
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]404 int cnt;
hpa4c505f72005-09-28 23:37:58[diff] [blame]405
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]406 get_host_and_port(&host, &port);
hpa4c505f72005-09-28 23:37:58[diff] [blame]407
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]408 if (flags & CONNECT_VERBOSE)
409 fprintf(stderr, "Looking up %s ... ", host);
410
hpa4c505f72005-09-28 23:37:58[diff] [blame]411 he = gethostbyname(host);
412 if (!he)
413 die("Unable to look up %s (%s)", host, hstrerror(h_errno));
414 nport = strtoul(port, &ep, 10);
415 if ( ep == port || *ep ) {
416 /* Not numeric */
417 struct servent *se = getservbyname(port,"tcp");
418 if ( !se )
Alexander Potashevd7530702009-01-04 18:38:41[diff] [blame]419 die("Unknown port %s", port);
hpa4c505f72005-09-28 23:37:58[diff] [blame]420 nport = se->s_port;
421 }
422
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]423 if (flags & CONNECT_VERBOSE)
424 fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port);
425
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]426 for (cnt = 0, ap = he->h_addr_list; *ap; ap++, cnt++) {
hpa4c505f72005-09-28 23:37:58[diff] [blame]427 memset(&sa, 0, sizeof sa);
428 sa.sin_family = he->h_addrtype;
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]429 sa.sin_port = htons(nport);
Paul Sericec6164212005-11-22 13:54:23[diff] [blame]430 memcpy(&sa.sin_addr, *ap, he->h_length);
hpa4c505f72005-09-28 23:37:58[diff] [blame]431
Erik Faye-Lund7203a2d2011-08-01 11:16:10[diff] [blame]432 sockfd = socket(he->h_addrtype, SOCK_STREAM, 0);
433 if ((sockfd < 0) ||
434 connect(sockfd, (struct sockaddr *)&sa, sizeof sa) < 0) {
435 strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n",
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]436 host,
437 cnt,
438 inet_ntoa(*(struct in_addr *)&sa.sin_addr),
Erik Faye-Lund7203a2d2011-08-01 11:16:10[diff] [blame]439 strerror(errno));
440 if (0 <= sockfd)
441 close(sockfd);
hpa4c505f72005-09-28 23:37:58[diff] [blame]442 sockfd = -1;
443 continue;
444 }
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]445 if (flags & CONNECT_VERBOSE)
446 fprintf(stderr, "%s ",
447 inet_ntoa(*(struct in_addr *)&sa.sin_addr));
hpa4c505f72005-09-28 23:37:58[diff] [blame]448 break;
449 }
450
451 if (sockfd < 0)
Erik Faye-Lund7203a2d2011-08-01 11:16:10[diff] [blame]452 die("unable to connect to %s:\n%s", host, error_message.buf);
hpa4c505f72005-09-28 23:37:58[diff] [blame]453
Eric Wonge47a8582011-12-06 04:39:36[diff] [blame]454 enable_keepalive(sockfd);
455
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]456 if (flags & CONNECT_VERBOSE)
457 fprintf(stderr, "done.\n");
458
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]459 return sockfd;
hpa4c505f72005-09-28 23:37:58[diff] [blame]460}
461
hpa49744d62005-09-28 23:52:21[diff] [blame]462#endif /* NO_IPV6 */
hpa4c505f72005-09-28 23:37:58[diff] [blame]463
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]464
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]465static void git_tcp_connect(int fd[2], char *host, int flags)
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]466{
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]467 int sockfd = git_tcp_connect_sock(host, flags);
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]468
469 fd[0] = sockfd;
Junio C Hamanoec587fd2007-01-22 01:10:51[diff] [blame]470 fd[1] = dup(sockfd);
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]471}
472
473
David Rientjes96f1e582006-08-15 17:23:48[diff] [blame]474static char *git_proxy_command;
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]475
Johannes Schindelinef90d6d2008-05-14 17:46:53[diff] [blame]476static int git_proxy_command_options(const char *var, const char *value,
477 void *cb)
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]478{
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]479 if (!strcmp(var, "core.gitproxy")) {
YOSHIFUJI Hideaki / ć‰è—€è‹±æ˜Žc3df8562005-11-22 03:18:23[diff] [blame]480 const char *for_pos;
481 int matchlen = -1;
482 int hostlen;
Erik Faye-Lund15112c92009-03-11 02:38:12[diff] [blame]483 const char *rhost_name = cb;
484 int rhost_len = strlen(rhost_name);
YOSHIFUJI Hideaki / ć‰è—€è‹±æ˜Žc3df8562005-11-22 03:18:23[diff] [blame]485
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]486 if (git_proxy_command)
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]487 return 0;
Junio C Hamanoc64b9ad2008-02-11 18:52:15[diff] [blame]488 if (!value)
489 return config_error_nonbool(var);
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]490 /* [core]
491 * ;# matches www.kernel.org as well
492 * gitproxy = netcatter-1 for kernel.org
493 * gitproxy = netcatter-2 for sample.xz
494 * gitproxy = netcatter-default
495 */
YOSHIFUJI Hideaki / ć‰è—€è‹±æ˜Žc3df8562005-11-22 03:18:23[diff] [blame]496 for_pos = strstr(value, " for ");
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]497 if (!for_pos)
498 /* matches everybody */
499 matchlen = strlen(value);
500 else {
501 hostlen = strlen(for_pos + 5);
502 if (rhost_len < hostlen)
503 matchlen = -1;
504 else if (!strncmp(for_pos + 5,
505 rhost_name + rhost_len - hostlen,
506 hostlen) &&
507 ((rhost_len == hostlen) ||
508 rhost_name[rhost_len - hostlen -1] == '.'))
509 matchlen = for_pos - value;
510 else
511 matchlen = -1;
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]512 }
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]513 if (0 <= matchlen) {
514 /* core.gitproxy = none for kernel.org */
Junio C Hamanoa6080a02007-06-07 07:04:01[diff] [blame]515 if (matchlen == 4 &&
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]516 !memcmp(value, "none", 4))
517 matchlen = 0;
Pierre Habouzit182af832007-09-15 22:32:36[diff] [blame]518 git_proxy_command = xmemdupz(value, matchlen);
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]519 }
520 return 0;
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]521 }
522
Johannes Schindelinef90d6d2008-05-14 17:46:53[diff] [blame]523 return git_default_config(var, value, cb);
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]524}
525
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]526static int git_use_proxy(const char *host)
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]527{
528 git_proxy_command = getenv("GIT_PROXY_COMMAND");
Erik Faye-Lund15112c92009-03-11 02:38:12[diff] [blame]529 git_config(git_proxy_command_options, (void*)host);
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]530 return (git_proxy_command && *git_proxy_command);
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]531}
532
Jeff King5cbf8242011-05-16 06:46:07[diff] [blame]533static struct child_process *git_proxy_connect(int fd[2], char *host)
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]534{
Timo Hirvonen554fe202006-06-28 09:04:39[diff] [blame]535 const char *port = STR(DEFAULT_GIT_PORT);
Jeff King5cbf8242011-05-16 06:46:07[diff] [blame]536 struct child_process *proxy;
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]537
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]538 get_host_and_port(&host, &port);
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]539
Jeff King5cbf8242011-05-16 06:46:07[diff] [blame]540 proxy = xcalloc(1, sizeof(*proxy));
Jeff King1823bea2014-05-15 08:34:09[diff] [blame]541 argv_array_push(&proxy->args, git_proxy_command);
542 argv_array_push(&proxy->args, host);
543 argv_array_push(&proxy->args, port);
Jeff King5cbf8242011-05-16 06:46:07[diff] [blame]544 proxy->in = -1;
545 proxy->out = -1;
546 if (start_command(proxy))
Jeff King1823bea2014-05-15 08:34:09[diff] [blame]547 die("cannot start proxy %s", git_proxy_command);
Jeff King5cbf8242011-05-16 06:46:07[diff] [blame]548 fd[0] = proxy->out; /* read from proxy stdout */
549 fd[1] = proxy->in; /* write to proxy stdin */
550 return proxy;
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]551}
552
Torsten Bögershausen83b05872013-11-28 19:49:54[diff] [blame]553static const char *get_port_numeric(const char *p)
Luben Tuikov2e776662007-09-01 09:36:31[diff] [blame]554{
555 char *end;
Luben Tuikov2e776662007-09-01 09:36:31[diff] [blame]556 if (p) {
René Scharfe8f148252008-12-21 01:12:11[diff] [blame]557 long port = strtol(p + 1, &end, 10);
558 if (end != p + 1 && *end == '\0' && 0 <= port && port < 65536) {
Torsten Bögershausen83b05872013-11-28 19:49:54[diff] [blame]559 return p;
Luben Tuikov2e776662007-09-01 09:36:31[diff] [blame]560 }
561 }
562
563 return NULL;
564}
565
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]566/*
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]567 * Extract protocol and relevant parts from the specified connection URL.
568 * The caller must free() the returned strings.
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]569 */
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]570static enum protocol parse_connect_url(const char *url_orig, char **ret_host,
Torsten Bögershausen83b05872013-11-28 19:49:54[diff] [blame]571 char **ret_path)
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]572{
Jeff King9d2e9422010-05-23 09:19:44[diff] [blame]573 char *url;
Benjamin Kramer8e76bf32009-03-13 12:51:33[diff] [blame]574 char *host, *path;
YOSHIFUJI Hideaki / ć‰è—€è‹±æ˜Ž356bece2005-12-21 10:23:42[diff] [blame]575 char *end;
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]576 int separator = '/';
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]577 enum protocol protocol = PROTO_LOCAL;
Junio C Hamanof0b73672006-06-20 01:25:21[diff] [blame]578
Jeff King9d2e9422010-05-23 09:19:44[diff] [blame]579 if (is_url(url_orig))
580 url = url_decode(url_orig);
581 else
582 url = xstrdup(url_orig);
583
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]584 host = strstr(url, "://");
Brian Gianforcaroeeefa7c2009-09-01 05:35:10[diff] [blame]585 if (host) {
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]586 *host = '\0';
587 protocol = get_protocol(url);
588 host += 3;
YOSHIFUJI Hideaki / ć‰è—€è‹±æ˜Ž356bece2005-12-21 10:23:42[diff] [blame]589 } else {
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]590 host = url;
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]591 if (!url_is_local_not_ssh(url)) {
592 protocol = PROTO_SSH;
593 separator = ':';
594 }
YOSHIFUJI Hideaki / ć‰è—€è‹±æ˜Ž356bece2005-12-21 10:23:42[diff] [blame]595 }
596
Ilari Liusvaara9aa50532010-01-26 18:24:42[diff] [blame]597 /*
Torsten Bögershausen83b05872013-11-28 19:49:54[diff] [blame]598 * Don't do destructive transforms as protocol code does
599 * '[]' unwrapping in get_host_and_port()
Ilari Liusvaara9aa50532010-01-26 18:24:42[diff] [blame]600 */
YOSHIFUJI Hideaki / ć‰è—€è‹±æ˜Ž356bece2005-12-21 10:23:42[diff] [blame]601 if (host[0] == '[') {
602 end = strchr(host + 1, ']');
603 if (end) {
YOSHIFUJI Hideaki / ć‰è—€è‹±æ˜Ž356bece2005-12-21 10:23:42[diff] [blame]604 end++;
YOSHIFUJI Hideaki / ć‰è—€è‹±æ˜Ž356bece2005-12-21 10:23:42[diff] [blame]605 } else
606 end = host;
607 } else
608 end = host;
609
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]610 if (protocol == PROTO_LOCAL)
Linus Torvalds72a4f4b2007-08-01 17:03:37[diff] [blame]611 path = end;
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]612 else if (protocol == PROTO_FILE && has_dos_drive_prefix(end))
613 path = end; /* "file://$(pwd)" may be "file://C:/projects/repo" */
614 else
615 path = strchr(end, separator);
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]616
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]617 if (!path || !*path)
618 die("No path specified. See 'man git-pull' for valid url syntax");
619
620 /*
621 * null-terminate hostname and point path to ~ for URL's like this:
622 * ssh://host.xz/~user/repo
623 */
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]624
625 end = path; /* Need to \0 terminate host here */
626 if (separator == ':')
627 path++; /* path starts after ':' */
628 if (protocol == PROTO_GIT || protocol == PROTO_SSH) {
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]629 if (path[1] == '~')
630 path++;
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]631 }
632
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]633 path = xstrdup(path);
634 *end = '\0';
635
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]636 *ret_host = xstrdup(host);
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]637 *ret_path = path;
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]638 free(url);
639 return protocol;
640}
641
Johannes Schindelinfb32c912008-02-10 03:06:57[diff] [blame]642static struct child_process no_fork;
643
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]644/*
Johannes Schindelinfb32c912008-02-10 03:06:57[diff] [blame]645 * This returns a dummy child_process if the transport protocol does not
646 * need fork(2), or a struct child_process object if it does. Once done,
647 * finish the connection with finish_connect() with the value returned from
648 * this function (it is safe to call finish_connect() with NULL to support
649 * the former case).
Franck Bui-Huuf42a5c42006-09-12 09:00:13[diff] [blame]650 *
Johannes Schindelinfb32c912008-02-10 03:06:57[diff] [blame]651 * If it returns, the connect is successful; it just dies on errors (this
652 * will hopefully be changed in a libification effort, to return NULL when
653 * the connection failed).
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]654 */
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]655struct child_process *git_connect(int fd[2], const char *url,
Johannes Sixt98158e92007-10-19 19:47:53[diff] [blame]656 const char *prog, int flags)
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]657{
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]658 char *hostandport, *path;
Jeff King5cbf8242011-05-16 06:46:07[diff] [blame]659 struct child_process *conn = &no_fork;
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]660 enum protocol protocol;
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]661 struct strbuf cmd = STRBUF_INIT;
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]662
Junio C Hamanof0b73672006-06-20 01:25:21[diff] [blame]663 /* Without this we cannot rely on waitpid() to tell
664 * what happened to our children.
665 */
666 signal(SIGCHLD, SIG_DFL);
667
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]668 protocol = parse_connect_url(url, &hostandport, &path);
Torsten Bögershausen5610b7c2013-11-28 19:49:17[diff] [blame]669 if (flags & CONNECT_DIAG_URL) {
670 printf("Diag: url=%s\n", url ? url : "NULL");
671 printf("Diag: protocol=%s\n", prot_name(protocol));
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]672 printf("Diag: hostandport=%s\n", hostandport ? hostandport : "NULL");
Torsten Bögershausen5610b7c2013-11-28 19:49:17[diff] [blame]673 printf("Diag: path=%s\n", path ? path : "NULL");
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]674 conn = NULL;
675 } else if (protocol == PROTO_GIT) {
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]676 /* These underlying connection commands die() if they
677 * cannot connect.
678 */
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]679 char *target_host = xstrdup(hostandport);
680 if (git_use_proxy(hostandport))
681 conn = git_proxy_connect(fd, hostandport);
Serge E. Hallynda2a95b2006-04-17 15:14:47[diff] [blame]682 else
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]683 git_tcp_connect(fd, hostandport, flags);
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]684 /*
685 * Separate original protocol components prog and path
Shawn O. Pearce73bb33a2009-06-05 01:33:32[diff] [blame]686 * from extended host header with a NUL byte.
687 *
688 * Note: Do not add any other headers here! Doing so
689 * will cause older git-daemon servers to crash.
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]690 */
691 packet_write(fd[1],
692 "%s %s%chost=%s%c",
693 prog, path, 0,
694 target_host, 0);
695 free(target_host);
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]696 } else {
697 conn = xcalloc(1, sizeof(*conn));
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]698
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]699 strbuf_addstr(&cmd, prog);
700 strbuf_addch(&cmd, ' ');
701 sq_quote_buf(&cmd, path);
Christian Couder0f503d72006-09-11 05:04:50[diff] [blame]702
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]703 conn->in = conn->out = -1;
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]704 if (protocol == PROTO_SSH) {
705 const char *ssh = getenv("GIT_SSH");
706 int putty = ssh && strcasestr(ssh, "plink");
707 char *ssh_host = hostandport;
708 const char *port = NULL;
709 get_host_and_port(&ssh_host, &port);
710 port = get_port_numeric(port);
Christian Couder0f503d72006-09-11 05:04:50[diff] [blame]711
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]712 if (!ssh) ssh = "ssh";
Luben Tuikov2e776662007-09-01 09:36:31[diff] [blame]713
Jeff King1823bea2014-05-15 08:34:09[diff] [blame]714 argv_array_push(&conn->args, ssh);
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]715 if (putty && !strcasestr(ssh, "tortoiseplink"))
Jeff King1823bea2014-05-15 08:34:09[diff] [blame]716 argv_array_push(&conn->args, "-batch");
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]717 if (port) {
718 /* P is for PuTTY, p is for OpenSSH */
Jeff King1823bea2014-05-15 08:34:09[diff] [blame]719 argv_array_push(&conn->args, putty ? "-P" : "-p");
720 argv_array_push(&conn->args, port);
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]721 }
Jeff King1823bea2014-05-15 08:34:09[diff] [blame]722 argv_array_push(&conn->args, ssh_host);
Nguyễn ThĂĄi Ngọc Duyc049b612014-03-13 11:45:31[diff] [blame]723 } else {
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]724 /* remove repo-local variables from the environment */
725 conn->env = local_repo_env;
726 conn->use_shell = 1;
Martin Sivak4852f722005-08-03 15:15:42[diff] [blame]727 }
Jeff King1823bea2014-05-15 08:34:09[diff] [blame]728 argv_array_push(&conn->args, cmd.buf);
Johannes Sixtf364cb82007-10-19 19:47:54[diff] [blame]729
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]730 if (start_command(conn))
731 die("unable to fork");
Johannes Sixtf364cb82007-10-19 19:47:54[diff] [blame]732
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]733 fd[0] = conn->out; /* read from child's stdout */
734 fd[1] = conn->in; /* write to child's stdin */
735 strbuf_release(&cmd);
736 }
737 free(hostandport);
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]738 free(path);
Johannes Sixt98158e92007-10-19 19:47:53[diff] [blame]739 return conn;
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]740}
741
Jeff King7ffe8532011-05-16 06:52:11[diff] [blame]742int git_connection_is_socket(struct child_process *conn)
743{
744 return conn == &no_fork;
745}
746
Johannes Sixt98158e92007-10-19 19:47:53[diff] [blame]747int finish_connect(struct child_process *conn)
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]748{
Johannes Sixtf364cb82007-10-19 19:47:54[diff] [blame]749 int code;
Jeff King7ffe8532011-05-16 06:52:11[diff] [blame]750 if (!conn || git_connection_is_socket(conn))
Franck Bui-Huuf42a5c42006-09-12 09:00:13[diff] [blame]751 return 0;
752
Johannes Sixtf364cb82007-10-19 19:47:54[diff] [blame]753 code = finish_command(conn);
Johannes Sixt98158e92007-10-19 19:47:53[diff] [blame]754 free(conn);
Johannes Sixtf364cb82007-10-19 19:47:54[diff] [blame]755 return code;
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]756}