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chromium / external / github.com / git / git / refs/tags/v2.7.6 / . / connect.c
blob: d77d39771b6c5101abe14df1e078af2a02ce8ace [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 Thái Ngọc Duy13eb4622013-12-05 13:02:29[diff] [blame]11#include "sha1-array.h"
Jeff Kinga5adace2015-09-16 17:12:52[diff] [blame]12#include "transport.h"
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]13
David Rientjes96f1e582006-08-15 17:23:48[diff] [blame]14static char *server_capabilities;
Junio C Hamano5d54cff2013-09-17 23:29:28[diff] [blame]15static const char *parse_feature_value(const char *, const char *, int *);
Johannes Schindelin211b5f92005-10-28 02:48:54[diff] [blame]16
René Scharfebe0b3f82014-08-30 09:46:54[diff] [blame]17static int check_ref(const char *name, unsigned int flags)
Linus Torvalds2718ff02006-07-04 19:29:10[diff] [blame]18{
19 if (!flags)
20 return 1;
21
René Scharfebe0b3f82014-08-30 09:46:54[diff] [blame]22 if (!skip_prefix(name, "refs/", &name))
Linus Torvalds2718ff02006-07-04 19:29:10[diff] [blame]23 return 0;
24
Linus Torvalds2718ff02006-07-04 19:29:10[diff] [blame]25 /* REF_NORMAL means that we don't want the magic fake tag refs */
Michael Haggerty8d9c5012011-09-15 21:10:25[diff] [blame]26 if ((flags & REF_NORMAL) && check_refname_format(name, 0))
Linus Torvalds2718ff02006-07-04 19:29:10[diff] [blame]27 return 0;
28
29 /* REF_HEADS means that we want regular branch heads */
René Scharfebe0b3f82014-08-30 09:46:54[diff] [blame]30 if ((flags & REF_HEADS) && starts_with(name, "heads/"))
Linus Torvalds2718ff02006-07-04 19:29:10[diff] [blame]31 return 1;
32
33 /* REF_TAGS means that we want tags */
René Scharfebe0b3f82014-08-30 09:46:54[diff] [blame]34 if ((flags & REF_TAGS) && starts_with(name, "tags/"))
Linus Torvalds2718ff02006-07-04 19:29:10[diff] [blame]35 return 1;
36
37 /* All type bits clear means that we are ok with anything */
38 return !(flags & ~REF_NORMAL);
39}
40
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]41int check_ref_type(const struct ref *ref, int flags)
42{
René Scharfebe0b3f82014-08-30 09:46:54[diff] [blame]43 return check_ref(ref->name, flags);
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]44}
45
Heiko Voigt46284dd2012-06-19 18:24:50[diff] [blame]46static void die_initial_contact(int got_at_least_one_head)
47{
48 if (got_at_least_one_head)
49 die("The remote end hung up upon initial contact");
50 else
51 die("Could not read from remote repository.\n\n"
52 "Please make sure you have the correct access rights\n"
53 "and the repository exists.");
54}
55
Junio C Hamanoa45b5f02013-09-18 02:10:31[diff] [blame]56static void parse_one_symref_info(struct string_list *symref, const char *val, int len)
57{
58 char *sym, *target;
59 struct string_list_item *item;
60
61 if (!len)
62 return; /* just "symref" */
63 /* e.g. "symref=HEAD:refs/heads/master" */
René Scharfe5c0b13f2014-07-19 15:35:34[diff] [blame]64 sym = xmemdupz(val, len);
Junio C Hamanoa45b5f02013-09-18 02:10:31[diff] [blame]65 target = strchr(sym, ':');
66 if (!target)
67 /* just "symref=something" */
68 goto reject;
69 *(target++) = '\0';
70 if (check_refname_format(sym, REFNAME_ALLOW_ONELEVEL) ||
71 check_refname_format(target, REFNAME_ALLOW_ONELEVEL))
72 /* "symref=bogus:pair */
73 goto reject;
74 item = string_list_append(symref, sym);
75 item->util = target;
76 return;
77reject:
78 free(sym);
79 return;
80}
81
82static void annotate_refs_with_symref_info(struct ref *ref)
83{
84 struct string_list symref = STRING_LIST_INIT_DUP;
85 const char *feature_list = server_capabilities;
86
87 while (feature_list) {
88 int len;
89 const char *val;
90
91 val = parse_feature_value(feature_list, "symref", &len);
92 if (!val)
93 break;
94 parse_one_symref_info(&symref, val, len);
95 feature_list = val + 1;
96 }
Michael Haggerty3383e192014-11-25 08:02:35[diff] [blame]97 string_list_sort(&symref);
Junio C Hamanoa45b5f02013-09-18 02:10:31[diff] [blame]98
99 for (; ref; ref = ref->next) {
100 struct string_list_item *item;
101 item = string_list_lookup(&symref, ref->name);
102 if (!item)
103 continue;
104 ref->symref = xstrdup((char *)item->util);
105 }
106 string_list_clear(&symref, 0);
107}
108
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]109/*
110 * Read all the refs from the other end
111 */
Jeff King85edf4f2013-02-20 20:06:45[diff] [blame]112struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
113 struct ref **list, unsigned int flags,
Nguyễn Thái Ngọc Duyb06dcd72013-12-05 13:02:33[diff] [blame]114 struct sha1_array *extra_have,
115 struct sha1_array *shallow_points)
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]116{
Junio C Hamanoa45b5f02013-09-18 02:10:31[diff] [blame]117 struct ref **orig_list = list;
Heiko Voigt46284dd2012-06-19 18:24:50[diff] [blame]118 int got_at_least_one_head = 0;
119
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]120 *list = NULL;
121 for (;;) {
122 struct ref *ref;
brian m. carlsone96b16c2015-11-10 02:22:23[diff] [blame]123 struct object_id old_oid;
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]124 char *name;
Johannes Schindelin211b5f92005-10-28 02:48:54[diff] [blame]125 int len, name_len;
Jeff King74543a02013-02-20 20:02:57[diff] [blame]126 char *buffer = packet_buffer;
Jeff Kingae021d82014-06-18 19:47:50[diff] [blame]127 const char *arg;
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]128
Jeff King85edf4f2013-02-20 20:06:45[diff] [blame]129 len = packet_read(in, &src_buf, &src_len,
Jeff King4981fe72013-02-23 22:31:34[diff] [blame]130 packet_buffer, sizeof(packet_buffer),
Jeff King819b9292013-02-20 20:02:28[diff] [blame]131 PACKET_READ_GENTLE_ON_EOF |
132 PACKET_READ_CHOMP_NEWLINE);
Heiko Voigt46284dd2012-06-19 18:24:50[diff] [blame]133 if (len < 0)
134 die_initial_contact(got_at_least_one_head);
135
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]136 if (!len)
137 break;
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]138
Jeff Kingae021d82014-06-18 19:47:50[diff] [blame]139 if (len > 4 && skip_prefix(buffer, "ERR ", &arg))
140 die("remote error: %s", arg);
Tom Preston-Wernera8073282008-11-01 18:44:45[diff] [blame]141
brian m. carlsone96b16c2015-11-10 02:22:23[diff] [blame]142 if (len == GIT_SHA1_HEXSZ + strlen("shallow ") &&
143 skip_prefix(buffer, "shallow ", &arg)) {
144 if (get_oid_hex(arg, &old_oid))
Jeff Kingae021d82014-06-18 19:47:50[diff] [blame]145 die("protocol error: expected shallow sha-1, got '%s'", arg);
Nguyễn Thái Ngọc Duyb06dcd72013-12-05 13:02:33[diff] [blame]146 if (!shallow_points)
147 die("repository on the other end cannot be shallow");
brian m. carlsone96b16c2015-11-10 02:22:23[diff] [blame]148 sha1_array_append(shallow_points, old_oid.hash);
Nguyễn Thái Ngọc Duyb06dcd72013-12-05 13:02:33[diff] [blame]149 continue;
150 }
151
brian m. carlsone96b16c2015-11-10 02:22:23[diff] [blame]152 if (len < GIT_SHA1_HEXSZ + 2 || get_oid_hex(buffer, &old_oid) ||
153 buffer[GIT_SHA1_HEXSZ] != ' ')
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]154 die("protocol error: expected sha/ref, got '%s'", buffer);
brian m. carlsone96b16c2015-11-10 02:22:23[diff] [blame]155 name = buffer + GIT_SHA1_HEXSZ + 1;
Junio C Hamano1a7141f2005-10-14 01:57:40[diff] [blame]156
Johannes Schindelin211b5f92005-10-28 02:48:54[diff] [blame]157 name_len = strlen(name);
brian m. carlsone96b16c2015-11-10 02:22:23[diff] [blame]158 if (len != name_len + GIT_SHA1_HEXSZ + 1) {
Jim Meyering8e0f7002008-01-31 17:26:32[diff] [blame]159 free(server_capabilities);
Shawn Pearce9befac42006-09-02 04:16:31[diff] [blame]160 server_capabilities = xstrdup(name + name_len + 1);
Johannes Schindelin211b5f92005-10-28 02:48:54[diff] [blame]161 }
162
René Scharfe2ae7f902015-02-21 19:49:58[diff] [blame]163 if (extra_have && !strcmp(name, ".have")) {
brian m. carlsone96b16c2015-11-10 02:22:23[diff] [blame]164 sha1_array_append(extra_have, old_oid.hash);
Junio C Hamano40c155f2008-09-09 08:27:09[diff] [blame]165 continue;
166 }
167
René Scharfebe0b3f82014-08-30 09:46:54[diff] [blame]168 if (!check_ref(name, flags))
Junio C Hamanocfee10a2005-12-26 07:18:37[diff] [blame]169 continue;
brian m. carlsone96b16c2015-11-10 02:22:23[diff] [blame]170 ref = alloc_ref(buffer + GIT_SHA1_HEXSZ + 1);
171 oidcpy(&ref->old_oid, &old_oid);
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]172 *list = ref;
173 list = &ref->next;
Heiko Voigt46284dd2012-06-19 18:24:50[diff] [blame]174 got_at_least_one_head = 1;
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]175 }
Junio C Hamanoa45b5f02013-09-18 02:10:31[diff] [blame]176
177 annotate_refs_with_symref_info(*orig_list);
178
Linus Torvaldsd1c133f2005-07-16 20:55:50[diff] [blame]179 return list;
180}
181
Junio C Hamano5d54cff2013-09-17 23:29:28[diff] [blame]182static const char *parse_feature_value(const char *feature_list, const char *feature, int *lenp)
Junio C Hamanof47182c2012-01-08 21:06:19[diff] [blame]183{
184 int len;
185
186 if (!feature_list)
187 return NULL;
188
189 len = strlen(feature);
190 while (*feature_list) {
191 const char *found = strstr(feature_list, feature);
192 if (!found)
193 return NULL;
Jeff King94427102012-08-14 01:59:27[diff] [blame]194 if (feature_list == found || isspace(found[-1])) {
195 const char *value = found + len;
196 /* feature with no value (e.g., "thin-pack") */
197 if (!*value || isspace(*value)) {
198 if (lenp)
199 *lenp = 0;
200 return value;
201 }
202 /* feature with a value (e.g., "agent=git/1.2.3") */
203 else if (*value == '=') {
204 value++;
205 if (lenp)
206 *lenp = strcspn(value, " \t\n");
207 return value;
208 }
209 /*
210 * otherwise we matched a substring of another feature;
211 * keep looking
212 */
213 }
Junio C Hamanof47182c2012-01-08 21:06:19[diff] [blame]214 feature_list = found + 1;
215 }
216 return NULL;
Johannes Schindelin211b5f92005-10-28 02:48:54[diff] [blame]217}
218
Jeff King94427102012-08-14 01:59:27[diff] [blame]219int parse_feature_request(const char *feature_list, const char *feature)
220{
221 return !!parse_feature_value(feature_list, feature, NULL);
222}
223
224const char *server_feature_value(const char *feature, int *len)
225{
226 return parse_feature_value(server_capabilities, feature, len);
227}
228
229int server_supports(const char *feature)
230{
231 return !!server_feature_value(feature, NULL);
232}
233
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]234enum protocol {
235 PROTO_LOCAL = 1,
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]236 PROTO_FILE,
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]237 PROTO_SSH,
Gary V. Vaughan4b055482010-05-14 09:31:35[diff] [blame]238 PROTO_GIT
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]239};
240
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]241int url_is_local_not_ssh(const char *url)
242{
243 const char *colon = strchr(url, ':');
244 const char *slash = strchr(url, '/');
245 return !colon || (slash && slash < colon) ||
246 has_dos_drive_prefix(url);
247}
248
Torsten Bögershausen5610b7c2013-11-28 19:49:17[diff] [blame]249static const char *prot_name(enum protocol protocol)
250{
251 switch (protocol) {
252 case PROTO_LOCAL:
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]253 case PROTO_FILE:
Torsten Bögershausen5610b7c2013-11-28 19:49:17[diff] [blame]254 return "file";
255 case PROTO_SSH:
256 return "ssh";
257 case PROTO_GIT:
258 return "git";
259 default:
Tobias Klauser83e6bda2015-09-24 12:44:49[diff] [blame]260 return "unknown protocol";
Torsten Bögershausen5610b7c2013-11-28 19:49:17[diff] [blame]261 }
262}
263
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]264static enum protocol get_protocol(const char *name)
265{
266 if (!strcmp(name, "ssh"))
267 return PROTO_SSH;
268 if (!strcmp(name, "git"))
269 return PROTO_GIT;
Linus Torvaldsc05186c2005-10-15 00:14:56[diff] [blame]270 if (!strcmp(name, "git+ssh"))
271 return PROTO_SSH;
272 if (!strcmp(name, "ssh+git"))
273 return PROTO_SSH;
Linus Torvalds72a4f4b2007-08-01 17:03:37[diff] [blame]274 if (!strcmp(name, "file"))
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]275 return PROTO_FILE;
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]276 die("I don't handle protocol '%s'", name);
277}
278
Torsten Bögershausen86ceb332015-02-21 15:52:48[diff] [blame]279static char *host_end(char **hoststart, int removebrackets)
280{
281 char *host = *hoststart;
282 char *end;
283 char *start = strstr(host, "@[");
284 if (start)
285 start++; /* Jump over '@' */
286 else
287 start = host;
288 if (start[0] == '[') {
289 end = strchr(start + 1, ']');
290 if (end) {
291 if (removebrackets) {
292 *end = 0;
293 memmove(start, start + 1, end - start);
294 end++;
295 }
296 } else
297 end = host;
298 } else
299 end = host;
300 return end;
301}
302
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]303#define STR_(s) # s
304#define STR(s) STR_(s)
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]305
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]306static void get_host_and_port(char **host, const char **port)
307{
308 char *colon, *end;
Torsten Bögershausen86ceb332015-02-21 15:52:48[diff] [blame]309 end = host_end(host, 1);
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]310 colon = strchr(end, ':');
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]311 if (colon) {
Torsten Bögershausen86ceb332015-02-21 15:52:48[diff] [blame]312 long portnr = strtol(colon + 1, &end, 10);
313 if (end != colon + 1 && *end == '\0' && 0 <= portnr && portnr < 65536) {
314 *colon = 0;
315 *port = colon + 1;
Torsten Bögershausen6b6c5f72015-04-07 20:03:25[diff] [blame]316 } else if (!colon[1]) {
317 *colon = 0;
Torsten Bögershausen86ceb332015-02-21 15:52:48[diff] [blame]318 }
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]319 }
320}
321
Eric Wonge47a8582011-12-06 04:39:36[diff] [blame]322static void enable_keepalive(int sockfd)
323{
324 int ka = 1;
325
326 if (setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &ka, sizeof(ka)) < 0)
327 fprintf(stderr, "unable to set SO_KEEPALIVE on socket: %s\n",
328 strerror(errno));
329}
330
hpa49744d62005-09-28 23:52:21[diff] [blame]331#ifndef NO_IPV6
hpa4c505f72005-09-28 23:37:58[diff] [blame]332
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]333static const char *ai_name(const struct addrinfo *ai)
334{
Benjamin Kramer785a9852009-04-24 12:16:41[diff] [blame]335 static char addr[NI_MAXHOST];
336 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, addr, sizeof(addr), NULL, 0,
337 NI_NUMERICHOST) != 0)
Jeff King5096d492015-09-24 21:06:08[diff] [blame]338 xsnprintf(addr, sizeof(addr), "(unknown)");
Benjamin Kramer785a9852009-04-24 12:16:41[diff] [blame]339
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]340 return addr;
341}
342
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]343/*
344 * Returns a connected socket() fd, or else die()s.
345 */
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]346static int git_tcp_connect_sock(char *host, int flags)
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]347{
Dave Zarzycki63a995b2011-07-12 16:28:34[diff] [blame]348 struct strbuf error_message = STRBUF_INIT;
349 int sockfd = -1;
Timo Hirvonen554fe202006-06-28 09:04:39[diff] [blame]350 const char *port = STR(DEFAULT_GIT_PORT);
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]351 struct addrinfo hints, *ai0, *ai;
352 int gai;
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]353 int cnt = 0;
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]354
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]355 get_host_and_port(&host, &port);
356 if (!*port)
357 port = "<none>";
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]358
359 memset(&hints, 0, sizeof(hints));
360 hints.ai_socktype = SOCK_STREAM;
361 hints.ai_protocol = IPPROTO_TCP;
362
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]363 if (flags & CONNECT_VERBOSE)
364 fprintf(stderr, "Looking up %s ... ", host);
365
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]366 gai = getaddrinfo(host, port, &hints, &ai);
367 if (gai)
Linus Torvalds608d48b2007-03-27 16:50:20[diff] [blame]368 die("Unable to look up %s (port %s) (%s)", host, port, gai_strerror(gai));
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]369
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]370 if (flags & CONNECT_VERBOSE)
371 fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port);
372
Erik Faye-Lunde08afec2011-08-01 11:16:09[diff] [blame]373 for (ai0 = ai; ai; ai = ai->ai_next, cnt++) {
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]374 sockfd = socket(ai->ai_family,
375 ai->ai_socktype, ai->ai_protocol);
Dave Zarzycki63a995b2011-07-12 16:28:34[diff] [blame]376 if ((sockfd < 0) ||
377 (connect(sockfd, ai->ai_addr, ai->ai_addrlen) < 0)) {
378 strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n",
379 host, cnt, ai_name(ai), strerror(errno));
380 if (0 <= sockfd)
381 close(sockfd);
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]382 sockfd = -1;
383 continue;
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]384 }
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]385 if (flags & CONNECT_VERBOSE)
386 fprintf(stderr, "%s ", ai_name(ai));
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]387 break;
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]388 }
389
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]390 freeaddrinfo(ai0);
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]391
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]392 if (sockfd < 0)
Dave Zarzycki63a995b2011-07-12 16:28:34[diff] [blame]393 die("unable to connect to %s:\n%s", host, error_message.buf);
YOSHIFUJI Hideaki5ba88442005-07-21 13:10:36[diff] [blame]394
Eric Wonge47a8582011-12-06 04:39:36[diff] [blame]395 enable_keepalive(sockfd);
396
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]397 if (flags & CONNECT_VERBOSE)
398 fprintf(stderr, "done.\n");
399
Dave Zarzycki63a995b2011-07-12 16:28:34[diff] [blame]400 strbuf_release(&error_message);
401
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]402 return sockfd;
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]403}
404
hpa49744d62005-09-28 23:52:21[diff] [blame]405#else /* NO_IPV6 */
hpa4c505f72005-09-28 23:37:58[diff] [blame]406
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]407/*
408 * Returns a connected socket() fd, or else die()s.
409 */
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]410static int git_tcp_connect_sock(char *host, int flags)
hpa4c505f72005-09-28 23:37:58[diff] [blame]411{
Erik Faye-Lund7203a2d2011-08-01 11:16:10[diff] [blame]412 struct strbuf error_message = STRBUF_INIT;
413 int sockfd = -1;
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]414 const char *port = STR(DEFAULT_GIT_PORT);
415 char *ep;
hpa4c505f72005-09-28 23:37:58[diff] [blame]416 struct hostent *he;
417 struct sockaddr_in sa;
418 char **ap;
419 unsigned int nport;
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]420 int cnt;
hpa4c505f72005-09-28 23:37:58[diff] [blame]421
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]422 get_host_and_port(&host, &port);
hpa4c505f72005-09-28 23:37:58[diff] [blame]423
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]424 if (flags & CONNECT_VERBOSE)
425 fprintf(stderr, "Looking up %s ... ", host);
426
hpa4c505f72005-09-28 23:37:58[diff] [blame]427 he = gethostbyname(host);
428 if (!he)
429 die("Unable to look up %s (%s)", host, hstrerror(h_errno));
430 nport = strtoul(port, &ep, 10);
431 if ( ep == port || *ep ) {
432 /* Not numeric */
433 struct servent *se = getservbyname(port,"tcp");
434 if ( !se )
Alexander Potashevd7530702009-01-04 18:38:41[diff] [blame]435 die("Unknown port %s", port);
hpa4c505f72005-09-28 23:37:58[diff] [blame]436 nport = se->s_port;
437 }
438
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]439 if (flags & CONNECT_VERBOSE)
440 fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port);
441
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]442 for (cnt = 0, ap = he->h_addr_list; *ap; ap++, cnt++) {
hpa4c505f72005-09-28 23:37:58[diff] [blame]443 memset(&sa, 0, sizeof sa);
444 sa.sin_family = he->h_addrtype;
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]445 sa.sin_port = htons(nport);
Paul Sericec6164212005-11-22 13:54:23[diff] [blame]446 memcpy(&sa.sin_addr, *ap, he->h_length);
hpa4c505f72005-09-28 23:37:58[diff] [blame]447
Erik Faye-Lund7203a2d2011-08-01 11:16:10[diff] [blame]448 sockfd = socket(he->h_addrtype, SOCK_STREAM, 0);
449 if ((sockfd < 0) ||
450 connect(sockfd, (struct sockaddr *)&sa, sizeof sa) < 0) {
451 strbuf_addf(&error_message, "%s[%d: %s]: errno=%s\n",
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]452 host,
453 cnt,
454 inet_ntoa(*(struct in_addr *)&sa.sin_addr),
Erik Faye-Lund7203a2d2011-08-01 11:16:10[diff] [blame]455 strerror(errno));
456 if (0 <= sockfd)
457 close(sockfd);
hpa4c505f72005-09-28 23:37:58[diff] [blame]458 sockfd = -1;
459 continue;
460 }
Alex Riesenba505322007-05-23 21:34:27[diff] [blame]461 if (flags & CONNECT_VERBOSE)
462 fprintf(stderr, "%s ",
463 inet_ntoa(*(struct in_addr *)&sa.sin_addr));
hpa4c505f72005-09-28 23:37:58[diff] [blame]464 break;
465 }
466
467 if (sockfd < 0)
Erik Faye-Lund7203a2d2011-08-01 11:16:10[diff] [blame]468 die("unable to connect to %s:\n%s", host, error_message.buf);
hpa4c505f72005-09-28 23:37:58[diff] [blame]469
Eric Wonge47a8582011-12-06 04:39:36[diff] [blame]470 enable_keepalive(sockfd);
471
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]472 if (flags & CONNECT_VERBOSE)
473 fprintf(stderr, "done.\n");
474
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]475 return sockfd;
hpa4c505f72005-09-28 23:37:58[diff] [blame]476}
477
hpa49744d62005-09-28 23:52:21[diff] [blame]478#endif /* NO_IPV6 */
hpa4c505f72005-09-28 23:37:58[diff] [blame]479
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]480
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]481static void git_tcp_connect(int fd[2], char *host, int flags)
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]482{
Michael S. Tsirkin7841ce72007-05-16 17:09:41[diff] [blame]483 int sockfd = git_tcp_connect_sock(host, flags);
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]484
485 fd[0] = sockfd;
Junio C Hamanoec587fd2007-01-22 01:10:51[diff] [blame]486 fd[1] = dup(sockfd);
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]487}
488
489
David Rientjes96f1e582006-08-15 17:23:48[diff] [blame]490static char *git_proxy_command;
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]491
Johannes Schindelinef90d6d2008-05-14 17:46:53[diff] [blame]492static int git_proxy_command_options(const char *var, const char *value,
493 void *cb)
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]494{
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]495 if (!strcmp(var, "core.gitproxy")) {
YOSHIFUJI Hideaki / 吉藤英明c3df8562005-11-22 03:18:23[diff] [blame]496 const char *for_pos;
497 int matchlen = -1;
498 int hostlen;
Erik Faye-Lund15112c92009-03-11 02:38:12[diff] [blame]499 const char *rhost_name = cb;
500 int rhost_len = strlen(rhost_name);
YOSHIFUJI Hideaki / 吉藤英明c3df8562005-11-22 03:18:23[diff] [blame]501
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]502 if (git_proxy_command)
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]503 return 0;
Junio C Hamanoc64b9ad2008-02-11 18:52:15[diff] [blame]504 if (!value)
505 return config_error_nonbool(var);
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]506 /* [core]
507 * ;# matches www.kernel.org as well
508 * gitproxy = netcatter-1 for kernel.org
509 * gitproxy = netcatter-2 for sample.xz
510 * gitproxy = netcatter-default
511 */
YOSHIFUJI Hideaki / 吉藤英明c3df8562005-11-22 03:18:23[diff] [blame]512 for_pos = strstr(value, " for ");
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]513 if (!for_pos)
514 /* matches everybody */
515 matchlen = strlen(value);
516 else {
517 hostlen = strlen(for_pos + 5);
518 if (rhost_len < hostlen)
519 matchlen = -1;
520 else if (!strncmp(for_pos + 5,
521 rhost_name + rhost_len - hostlen,
522 hostlen) &&
523 ((rhost_len == hostlen) ||
524 rhost_name[rhost_len - hostlen -1] == '.'))
525 matchlen = for_pos - value;
526 else
527 matchlen = -1;
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]528 }
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]529 if (0 <= matchlen) {
530 /* core.gitproxy = none for kernel.org */
Junio C Hamanoa6080a02007-06-07 07:04:01[diff] [blame]531 if (matchlen == 4 &&
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]532 !memcmp(value, "none", 4))
533 matchlen = 0;
Pierre Habouzit182af832007-09-15 22:32:36[diff] [blame]534 git_proxy_command = xmemdupz(value, matchlen);
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]535 }
536 return 0;
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]537 }
538
Johannes Schindelinef90d6d2008-05-14 17:46:53[diff] [blame]539 return git_default_config(var, value, cb);
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]540}
541
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]542static int git_use_proxy(const char *host)
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]543{
544 git_proxy_command = getenv("GIT_PROXY_COMMAND");
Erik Faye-Lund15112c92009-03-11 02:38:12[diff] [blame]545 git_config(git_proxy_command_options, (void*)host);
Junio C Hamanoe814bc42005-11-19 11:48:56[diff] [blame]546 return (git_proxy_command && *git_proxy_command);
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]547}
548
Jeff King5cbf8242011-05-16 06:46:07[diff] [blame]549static struct child_process *git_proxy_connect(int fd[2], char *host)
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]550{
Timo Hirvonen554fe202006-06-28 09:04:39[diff] [blame]551 const char *port = STR(DEFAULT_GIT_PORT);
Jeff King5cbf8242011-05-16 06:46:07[diff] [blame]552 struct child_process *proxy;
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]553
Michael Lukashov72a534d2010-02-17 20:56:02[diff] [blame]554 get_host_and_port(&host, &port);
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]555
Jeff King3be4cf02017-07-28 19:26:50[diff] [blame]556 if (looks_like_command_line_option(host))
557 die("strange hostname '%s' blocked", host);
558 if (looks_like_command_line_option(port))
559 die("strange port '%s' blocked", port);
560
René Scharfe483bbd42014-08-19 19:10:48[diff] [blame]561 proxy = xmalloc(sizeof(*proxy));
562 child_process_init(proxy);
Jeff King1823bea2014-05-15 08:34:09[diff] [blame]563 argv_array_push(&proxy->args, git_proxy_command);
564 argv_array_push(&proxy->args, host);
565 argv_array_push(&proxy->args, port);
Jeff King5cbf8242011-05-16 06:46:07[diff] [blame]566 proxy->in = -1;
567 proxy->out = -1;
568 if (start_command(proxy))
Jeff King1823bea2014-05-15 08:34:09[diff] [blame]569 die("cannot start proxy %s", git_proxy_command);
Jeff King5cbf8242011-05-16 06:46:07[diff] [blame]570 fd[0] = proxy->out; /* read from proxy stdout */
571 fd[1] = proxy->in; /* write to proxy stdin */
572 return proxy;
Paul Collinsf8014772005-11-04 14:57:16[diff] [blame]573}
574
Torsten Bögershausen86ceb332015-02-21 15:52:48[diff] [blame]575static char *get_port(char *host)
Luben Tuikov2e776662007-09-01 09:36:31[diff] [blame]576{
577 char *end;
Torsten Bögershausen86ceb332015-02-21 15:52:48[diff] [blame]578 char *p = strchr(host, ':');
579
Luben Tuikov2e776662007-09-01 09:36:31[diff] [blame]580 if (p) {
René Scharfe8f148252008-12-21 01:12:11[diff] [blame]581 long port = strtol(p + 1, &end, 10);
582 if (end != p + 1 && *end == '\0' && 0 <= port && port < 65536) {
Torsten Bögershausen86ceb332015-02-21 15:52:48[diff] [blame]583 *p = '\0';
584 return p+1;
Luben Tuikov2e776662007-09-01 09:36:31[diff] [blame]585 }
586 }
587
588 return NULL;
589}
590
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]591/*
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]592 * Extract protocol and relevant parts from the specified connection URL.
593 * The caller must free() the returned strings.
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]594 */
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]595static enum protocol parse_connect_url(const char *url_orig, char **ret_host,
Torsten Bögershausen83b05872013-11-28 19:49:54[diff] [blame]596 char **ret_path)
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]597{
Jeff King9d2e9422010-05-23 09:19:44[diff] [blame]598 char *url;
Benjamin Kramer8e76bf32009-03-13 12:51:33[diff] [blame]599 char *host, *path;
YOSHIFUJI Hideaki / 吉藤英明356bece2005-12-21 10:23:42[diff] [blame]600 char *end;
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]601 int separator = '/';
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]602 enum protocol protocol = PROTO_LOCAL;
Junio C Hamanof0b73672006-06-20 01:25:21[diff] [blame]603
Jeff King9d2e9422010-05-23 09:19:44[diff] [blame]604 if (is_url(url_orig))
605 url = url_decode(url_orig);
606 else
607 url = xstrdup(url_orig);
608
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]609 host = strstr(url, "://");
Brian Gianforcaroeeefa7c2009-09-01 05:35:10[diff] [blame]610 if (host) {
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]611 *host = '\0';
612 protocol = get_protocol(url);
613 host += 3;
YOSHIFUJI Hideaki / 吉藤英明356bece2005-12-21 10:23:42[diff] [blame]614 } else {
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]615 host = url;
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]616 if (!url_is_local_not_ssh(url)) {
617 protocol = PROTO_SSH;
618 separator = ':';
619 }
YOSHIFUJI Hideaki / 吉藤英明356bece2005-12-21 10:23:42[diff] [blame]620 }
621
Ilari Liusvaara9aa50532010-01-26 18:24:42[diff] [blame]622 /*
Torsten Bögershausen83b05872013-11-28 19:49:54[diff] [blame]623 * Don't do destructive transforms as protocol code does
624 * '[]' unwrapping in get_host_and_port()
Ilari Liusvaara9aa50532010-01-26 18:24:42[diff] [blame]625 */
Torsten Bögershausen86ceb332015-02-21 15:52:48[diff] [blame]626 end = host_end(&host, 0);
YOSHIFUJI Hideaki / 吉藤英明356bece2005-12-21 10:23:42[diff] [blame]627
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]628 if (protocol == PROTO_LOCAL)
Linus Torvalds72a4f4b2007-08-01 17:03:37[diff] [blame]629 path = end;
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]630 else if (protocol == PROTO_FILE && has_dos_drive_prefix(end))
631 path = end; /* "file://$(pwd)" may be "file://C:/projects/repo" */
632 else
633 path = strchr(end, separator);
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]634
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]635 if (!path || !*path)
636 die("No path specified. See 'man git-pull' for valid url syntax");
637
638 /*
639 * null-terminate hostname and point path to ~ for URL's like this:
640 * ssh://host.xz/~user/repo
641 */
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]642
643 end = path; /* Need to \0 terminate host here */
644 if (separator == ':')
645 path++; /* path starts after ':' */
646 if (protocol == PROTO_GIT || protocol == PROTO_SSH) {
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]647 if (path[1] == '~')
648 path++;
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]649 }
650
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]651 path = xstrdup(path);
652 *end = '\0';
653
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]654 *ret_host = xstrdup(host);
Torsten Bögershausenc59ab2e2013-11-28 19:50:03[diff] [blame]655 *ret_path = path;
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]656 free(url);
657 return protocol;
658}
659
René Scharfed3180272014-08-19 19:09:35[diff] [blame]660static struct child_process no_fork = CHILD_PROCESS_INIT;
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]661
Johannes Schindelinfb32c912008-02-10 03:06:57[diff] [blame]662/*
663 * This returns a dummy child_process if the transport protocol does not
664 * need fork(2), or a struct child_process object if it does. Once done,
665 * finish the connection with finish_connect() with the value returned from
666 * this function (it is safe to call finish_connect() with NULL to support
Franck Bui-Huuf42a5c42006-09-12 09:00:13[diff] [blame]667 * the former case).
Johannes Schindelinfb32c912008-02-10 03:06:57[diff] [blame]668 *
669 * If it returns, the connect is successful; it just dies on errors (this
670 * will hopefully be changed in a libification effort, to return NULL when
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]671 * the connection failed).
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]672 */
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]673struct child_process *git_connect(int fd[2], const char *url,
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]674 const char *prog, int flags)
Daniel Barkalow45773702007-10-30 01:05:40[diff] [blame]675{
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]676 char *hostandport, *path;
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]677 struct child_process *conn = &no_fork;
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]678 enum protocol protocol;
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]679 struct strbuf cmd = STRBUF_INIT;
Junio C Hamanof0b73672006-06-20 01:25:21[diff] [blame]680
681 /* Without this we cannot rely on waitpid() to tell
682 * what happened to our children.
683 */
684 signal(SIGCHLD, SIG_DFL);
Andreas Ericssonfaea9cc2005-11-17 19:37:14[diff] [blame]685
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]686 protocol = parse_connect_url(url, &hostandport, &path);
Torsten Bögershausen3f55cca2015-02-21 15:52:55[diff] [blame]687 if ((flags & CONNECT_DIAG_URL) && (protocol != PROTO_SSH)) {
Torsten Bögershausen5610b7c2013-11-28 19:49:17[diff] [blame]688 printf("Diag: url=%s\n", url ? url : "NULL");
689 printf("Diag: protocol=%s\n", prot_name(protocol));
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]690 printf("Diag: hostandport=%s\n", hostandport ? hostandport : "NULL");
Torsten Bögershausen5610b7c2013-11-28 19:49:17[diff] [blame]691 printf("Diag: path=%s\n", path ? path : "NULL");
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]692 conn = NULL;
693 } else if (protocol == PROTO_GIT) {
Jeff King94bc83c2015-02-17 08:37:35[diff] [blame]694 /*
695 * Set up virtual host information based on where we will
696 * connect, unless the user has overridden us in
697 * the environment.
698 */
699 char *target_host = getenv("GIT_OVERRIDE_VIRTUAL_HOST");
700 if (target_host)
701 target_host = xstrdup(target_host);
702 else
703 target_host = xstrdup(hostandport);
704
Jeff Kinga5adace2015-09-16 17:12:52[diff] [blame]705 transport_check_allowed("git");
706
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]707 /* These underlying connection commands die() if they
708 * cannot connect.
709 */
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]710 if (git_use_proxy(hostandport))
711 conn = git_proxy_connect(fd, hostandport);
Serge E. Hallynda2a95b2006-04-17 15:14:47[diff] [blame]712 else
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]713 git_tcp_connect(fd, hostandport, flags);
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]714 /*
715 * Separate original protocol components prog and path
Shawn O. Pearce73bb33a2009-06-05 01:33:32[diff] [blame]716 * from extended host header with a NUL byte.
717 *
718 * Note: Do not add any other headers here! Doing so
719 * will cause older git-daemon servers to crash.
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]720 */
721 packet_write(fd[1],
722 "%s %s%chost=%s%c",
723 prog, path, 0,
724 target_host, 0);
725 free(target_host);
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]726 } else {
René Scharfe483bbd42014-08-19 19:10:48[diff] [blame]727 conn = xmalloc(sizeof(*conn));
728 child_process_init(conn);
Linus Torvalds2386d652005-07-14 01:46:20[diff] [blame]729
Jeff Kingaeeb2d42017-07-28 19:28:55[diff] [blame]730 if (looks_like_command_line_option(path))
731 die("strange pathname '%s' blocked", path);
732
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]733 strbuf_addstr(&cmd, prog);
734 strbuf_addch(&cmd, ' ');
735 sq_quote_buf(&cmd, path);
Christian Couder0f503d72006-09-11 05:04:50[diff] [blame]736
Jeff Kingaab40432015-09-04 22:40:08[diff] [blame]737 /* remove repo-local variables from the environment */
738 conn->env = local_repo_env;
Jeff Kinga48b4092015-09-08 08:33:14[diff] [blame]739 conn->use_shell = 1;
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]740 conn->in = conn->out = -1;
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]741 if (protocol == PROTO_SSH) {
Thomas Quinot39942762014-11-09 22:42:32[diff] [blame]742 const char *ssh;
Jeff Kinga48b4092015-09-08 08:33:14[diff] [blame]743 int putty = 0, tortoiseplink = 0;
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]744 char *ssh_host = hostandport;
745 const char *port = NULL;
Jeff Kinga5adace2015-09-16 17:12:52[diff] [blame]746 transport_check_allowed("ssh");
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]747 get_host_and_port(&ssh_host, &port);
Christian Couder0f503d72006-09-11 05:04:50[diff] [blame]748
Torsten Bögershausen86ceb332015-02-21 15:52:48[diff] [blame]749 if (!port)
750 port = get_port(ssh_host);
Junio C Hamano42da4842015-03-05 20:45:44[diff] [blame]751
Torsten Bögershausen3f55cca2015-02-21 15:52:55[diff] [blame]752 if (flags & CONNECT_DIAG_URL) {
753 printf("Diag: url=%s\n", url ? url : "NULL");
754 printf("Diag: protocol=%s\n", prot_name(protocol));
755 printf("Diag: userandhost=%s\n", ssh_host ? ssh_host : "NULL");
756 printf("Diag: port=%s\n", port ? port : "NONE");
757 printf("Diag: path=%s\n", path ? path : "NULL");
Christian Couder0f503d72006-09-11 05:04:50[diff] [blame]758
Torsten Bögershausen3f55cca2015-02-21 15:52:55[diff] [blame]759 free(hostandport);
760 free(path);
Stefan Beller04f20c02015-03-09 16:58:22[diff] [blame]761 free(conn);
Torsten Bögershausen3f55cca2015-02-21 15:52:55[diff] [blame]762 return NULL;
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]763 }
brian m. carlson37ee6462015-04-26 20:30:10[diff] [blame]764
Jeff King2491f772017-07-28 19:25:45[diff] [blame]765 if (looks_like_command_line_option(ssh_host))
Junio C Hamano820d7652017-07-26 17:24:20[diff] [blame]766 die("strange hostname '%s' blocked", ssh_host);
767
brian m. carlson37ee6462015-04-26 20:30:10[diff] [blame]768 ssh = getenv("GIT_SSH_COMMAND");
Jeff Kinga48b4092015-09-08 08:33:14[diff] [blame]769 if (!ssh) {
brian m. carlsonbaaf2332015-04-26 20:30:12[diff] [blame]770 const char *base;
771 char *ssh_dup;
772
Jeff Kinga48b4092015-09-08 08:33:14[diff] [blame]773 /*
774 * GIT_SSH is the no-shell version of
775 * GIT_SSH_COMMAND (and must remain so for
776 * historical compatibility).
777 */
778 conn->use_shell = 0;
779
brian m. carlson37ee6462015-04-26 20:30:10[diff] [blame]780 ssh = getenv("GIT_SSH");
781 if (!ssh)
782 ssh = "ssh";
brian m. carlsonbaaf2332015-04-26 20:30:12[diff] [blame]783
784 ssh_dup = xstrdup(ssh);
785 base = basename(ssh_dup);
786
787 tortoiseplink = !strcasecmp(base, "tortoiseplink") ||
788 !strcasecmp(base, "tortoiseplink.exe");
Jeff Kinga48b4092015-09-08 08:33:14[diff] [blame]789 putty = tortoiseplink ||
790 !strcasecmp(base, "plink") ||
791 !strcasecmp(base, "plink.exe");
brian m. carlsonbaaf2332015-04-26 20:30:12[diff] [blame]792
793 free(ssh_dup);
brian m. carlson37ee6462015-04-26 20:30:10[diff] [blame]794 }
795
796 argv_array_push(&conn->args, ssh);
brian m. carlsonbaaf2332015-04-26 20:30:12[diff] [blame]797 if (tortoiseplink)
brian m. carlson37ee6462015-04-26 20:30:10[diff] [blame]798 argv_array_push(&conn->args, "-batch");
799 if (port) {
800 /* P is for PuTTY, p is for OpenSSH */
801 argv_array_push(&conn->args, putty ? "-P" : "-p");
802 argv_array_push(&conn->args, port);
803 }
804 argv_array_push(&conn->args, ssh_host);
Nguyễn Thái Ngọc Duyc049b612014-03-13 11:45:31[diff] [blame]805 } else {
Jeff Kinga5adace2015-09-16 17:12:52[diff] [blame]806 transport_check_allowed("file");
Martin Sivak4852f722005-08-03 15:15:42[diff] [blame]807 }
Jeff King1823bea2014-05-15 08:34:09[diff] [blame]808 argv_array_push(&conn->args, cmd.buf);
Johannes Sixtf364cb82007-10-19 19:47:54[diff] [blame]809
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]810 if (start_command(conn))
811 die("unable to fork");
Johannes Sixtf364cb82007-10-19 19:47:54[diff] [blame]812
Torsten Bögershausena2036d72013-11-28 19:50:15[diff] [blame]813 fd[0] = conn->out; /* read from child's stdout */
814 fd[1] = conn->in; /* write to child's stdin */
815 strbuf_release(&cmd);
816 }
817 free(hostandport);
Johannes Sixtcabc3c12013-11-28 19:49:01[diff] [blame]818 free(path);
Johannes Sixt98158e92007-10-19 19:47:53[diff] [blame]819 return conn;
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]820}
821
Jeff King7ffe8532011-05-16 06:52:11[diff] [blame]822int git_connection_is_socket(struct child_process *conn)
823{
824 return conn == &no_fork;
825}
826
Johannes Sixt98158e92007-10-19 19:47:53[diff] [blame]827int finish_connect(struct child_process *conn)
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]828{
Johannes Sixtf364cb82007-10-19 19:47:54[diff] [blame]829 int code;
Jeff King7ffe8532011-05-16 06:52:11[diff] [blame]830 if (!conn || git_connection_is_socket(conn))
Franck Bui-Huuf42a5c42006-09-12 09:00:13[diff] [blame]831 return 0;
832
Johannes Sixtf364cb82007-10-19 19:47:54[diff] [blame]833 code = finish_command(conn);
Johannes Sixt98158e92007-10-19 19:47:53[diff] [blame]834 free(conn);
Johannes Sixtf364cb82007-10-19 19:47:54[diff] [blame]835 return code;
Linus Torvaldsf7192592005-07-04 18:57:58[diff] [blame]836}