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chromium / external / github.com / git / git / refs/tags/v1.9-rc2 / . / daemon.c
blob: 503e03906c5c7f921e4d67a53835f771ea695d0c [file] [log] [blame]
Randal L. Schwartz979e32f2005-10-25 23:29:09[diff] [blame]1#include "cache.h"
Junio C Hamano85023572006-12-19 22:34:12[diff] [blame]2#include "pkt-line.h"
Michal Ostrowski77cb17e2006-01-11 02:12:17[diff] [blame]3#include "exec_cmd.h"
Johannes Sixt5d87dd42009-06-14 20:38:51[diff] [blame]4#include "run-command.h"
5#include "strbuf.h"
Alexander Sulfrian3a3a29c2010-08-30 11:30:51[diff] [blame]6#include "string-list.h"
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]7
Johannes Schindelin695dffe2006-09-28 10:00:35[diff] [blame]8#ifndef HOST_NAME_MAX
9#define HOST_NAME_MAX 256
10#endif
11
Markus Duft28449232010-10-27 08:39:52[diff] [blame]12#ifdef NO_INITGROUPS
13#define initgroups(x, y) (0) /* nothing */
14#endif
15
Petr Baudis9048fe12005-09-24 14:13:01[diff] [blame]16static int log_syslog;
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]17static int verbose;
Mark Wooding1955fab2006-02-03 20:27:04[diff] [blame]18static int reuseaddr;
Jeff Kingd5570f42011-10-14 21:19:21[diff] [blame]19static int informative_errors;
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]20
H. Peter Anvin960decc2005-10-19 21:27:01[diff] [blame]21static const char daemon_usage[] =
Stephan Beyer1b1dd232008-07-13 13:36:15[diff] [blame]22"git daemon [--verbose] [--syslog] [--export-all]\n"
Štěpán Němec62b46982010-10-08 17:31:15[diff] [blame]23" [--timeout=<n>] [--init-timeout=<n>] [--max-connections=<n>]\n"
24" [--strict-paths] [--base-path=<path>] [--base-path-relaxed]\n"
25" [--user-path | --user-path=<path>]\n"
26" [--interpolated-path=<path>]\n"
Erik Faye-Lund9cddf562010-11-04 01:35:23[diff] [blame]27" [--reuseaddr] [--pid-file=<file>]\n"
Štěpán Němec62b46982010-10-08 17:31:15[diff] [blame]28" [--(enable|disable|allow-override|forbid-override)=<service>]\n"
Junio C Hamano93741e42012-08-14 18:37:51[diff] [blame]29" [--access-hook=<path>]\n"
Štěpán Němec62b46982010-10-08 17:31:15[diff] [blame]30" [--inetd | [--listen=<host_or_ipaddr>] [--port=<n>]\n"
Erik Faye-Lund9cddf562010-11-04 01:35:23[diff] [blame]31" [--detach] [--user=<user> [--group=<group>]]\n"
Štěpán Němec62b46982010-10-08 17:31:15[diff] [blame]32" [<directory>...]";
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]33
34/* List of acceptable pathname prefixes */
David Rientjes96f1e582006-08-15 17:23:48[diff] [blame]35static char **ok_paths;
36static int strict_paths;
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]37
38/* If this is set, git-daemon-export-ok is not required */
David Rientjes96f1e582006-08-15 17:23:48[diff] [blame]39static int export_all_trees;
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]40
Petr Baudisb21c31c2005-12-23 01:27:40[diff] [blame]41/* Take all paths relative to this one if non-NULL */
David Rientjes96f1e582006-08-15 17:23:48[diff] [blame]42static char *base_path;
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]43static char *interpolated_path;
Jens Axboe73a7a652007-07-27 21:00:29[diff] [blame]44static int base_path_relaxed;
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]45
46/* Flag indicating client sent extra args. */
47static int saw_extended_args;
Petr Baudisb21c31c2005-12-23 01:27:40[diff] [blame]48
Junio C Hamano603968d2006-02-05 06:27:29[diff] [blame]49/* If defined, ~user notation is allowed and the string is inserted
50 * after ~user/. E.g. a request to git://host/~alice/frotz would
51 * go to /home/alice/pub_git/frotz with --user-path=pub_git.
52 */
David Rientjes96f1e582006-08-15 17:23:48[diff] [blame]53static const char *user_path;
Junio C Hamano603968d2006-02-05 06:27:29[diff] [blame]54
H. Peter Anvin960decc2005-10-19 21:27:01[diff] [blame]55/* Timeout, and initial timeout */
David Rientjes96f1e582006-08-15 17:23:48[diff] [blame]56static unsigned int timeout;
57static unsigned int init_timeout;
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]58
René Scharfe9d7ca662008-11-22 23:15:01[diff] [blame]59static char *hostname;
60static char *canon_hostname;
61static char *ip_address;
62static char *tcp_port;
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]63
Petr Baudis9048fe12005-09-24 14:13:01[diff] [blame]64static void logreport(int priority, const char *err, va_list params)
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]65{
Petr Baudis9048fe12005-09-24 14:13:01[diff] [blame]66 if (log_syslog) {
Stephen R. van den Berg6a992e92008-08-14 18:02:20[diff] [blame]67 char buf[1024];
68 vsnprintf(buf, sizeof(buf), err, params);
Petr Baudis9048fe12005-09-24 14:13:01[diff] [blame]69 syslog(priority, "%s", buf);
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]70 } else {
71 /*
Erik Faye-Lund48cfaea2010-11-04 01:35:17[diff] [blame]72 * Since stderr is set to buffered mode, the
Stephen R. van den Berg6a992e92008-08-14 18:02:20[diff] [blame]73 * logging of different processes will not overlap
Erik Faye-Lund48cfaea2010-11-04 01:35:17[diff] [blame]74 * unless they overflow the (rather big) buffers.
Stephen R. van den Berg6a992e92008-08-14 18:02:20[diff] [blame]75 */
David Soria Parra85e72832008-08-31 12:09:39[diff] [blame]76 fprintf(stderr, "[%"PRIuMAX"] ", (uintmax_t)getpid());
Stephen R. van den Berg6a992e92008-08-14 18:02:20[diff] [blame]77 vfprintf(stderr, err, params);
78 fputc('\n', stderr);
Erik Faye-Lund48cfaea2010-11-04 01:35:17[diff] [blame]79 fflush(stderr);
Stephen R. van den Berg6a992e92008-08-14 18:02:20[diff] [blame]80 }
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]81}
82
Tarmigan Casebolt28bea9e2009-11-14 21:33:13[diff] [blame]83__attribute__((format (printf, 1, 2)))
Pavel Roskincdda4742005-09-29 20:53:14[diff] [blame]84static void logerror(const char *err, ...)
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]85{
86 va_list params;
87 va_start(params, err);
Petr Baudis9048fe12005-09-24 14:13:01[diff] [blame]88 logreport(LOG_ERR, err, params);
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]89 va_end(params);
90}
91
Tarmigan Casebolt28bea9e2009-11-14 21:33:13[diff] [blame]92__attribute__((format (printf, 1, 2)))
Pavel Roskincdda4742005-09-29 20:53:14[diff] [blame]93static void loginfo(const char *err, ...)
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]94{
95 va_list params;
96 if (!verbose)
97 return;
98 va_start(params, err);
Petr Baudis9048fe12005-09-24 14:13:01[diff] [blame]99 logreport(LOG_INFO, err, params);
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]100 va_end(params);
101}
102
Matthias Lederhoferad8b4f52006-07-13 10:02:29[diff] [blame]103static void NORETURN daemon_die(const char *err, va_list params)
104{
105 logreport(LOG_ERR, err, params);
106 exit(1);
107}
108
Erik Faye-Lund1c64b482011-10-04 20:02:00[diff] [blame]109static const char *path_ok(char *directory)
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]110{
Junio C Hamano603968d2006-02-05 06:27:29[diff] [blame]111 static char rpath[PATH_MAX];
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]112 static char interp_path[PATH_MAX];
Erik Faye-Lund1c64b482011-10-04 20:02:00[diff] [blame]113 const char *path;
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]114 char *dir;
115
René Scharfe9d7ca662008-11-22 23:15:01[diff] [blame]116 dir = directory;
Junio C Hamanod79374c2005-12-03 09:45:57[diff] [blame]117
Shawn O. Pearce34b6cb82009-11-09 19:26:43[diff] [blame]118 if (daemon_avoid_alias(dir)) {
Junio C Hamanod79374c2005-12-03 09:45:57[diff] [blame]119 logerror("'%s': aliased", dir);
120 return NULL;
121 }
122
Junio C Hamano603968d2006-02-05 06:27:29[diff] [blame]123 if (*dir == '~') {
124 if (!user_path) {
125 logerror("'%s': User-path not allowed", dir);
126 return NULL;
127 }
128 if (*user_path) {
129 /* Got either "~alice" or "~alice/foo";
130 * rewrite them to "~alice/%s" or
131 * "~alice/%s/foo".
132 */
133 int namlen, restlen = strlen(dir);
134 char *slash = strchr(dir, '/');
135 if (!slash)
136 slash = dir + restlen;
137 namlen = slash - dir;
138 restlen -= namlen;
139 loginfo("userpath <%s>, request <%s>, namlen %d, restlen %d, slash <%s>", user_path, dir, namlen, restlen, slash);
140 snprintf(rpath, PATH_MAX, "%.*s/%s%.*s",
141 namlen, dir, user_path, restlen, slash);
142 dir = rpath;
143 }
144 }
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]145 else if (interpolated_path && saw_extended_args) {
René Scharfe9d7ca662008-11-22 23:15:01[diff] [blame]146 struct strbuf expanded_path = STRBUF_INIT;
Gary V. Vaughan66dbfd52010-05-14 09:31:33[diff] [blame]147 struct strbuf_expand_dict_entry dict[6];
René Scharfe9d7ca662008-11-22 23:15:01[diff] [blame]148
Gary V. Vaughan66dbfd52010-05-14 09:31:33[diff] [blame]149 dict[0].placeholder = "H"; dict[0].value = hostname;
150 dict[1].placeholder = "CH"; dict[1].value = canon_hostname;
151 dict[2].placeholder = "IP"; dict[2].value = ip_address;
152 dict[3].placeholder = "P"; dict[3].value = tcp_port;
153 dict[4].placeholder = "D"; dict[4].value = directory;
154 dict[5].placeholder = NULL; dict[5].value = NULL;
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]155 if (*dir != '/') {
156 /* Allow only absolute */
157 logerror("'%s': Non-absolute path denied (interpolated-path active)", dir);
158 return NULL;
159 }
160
René Scharfe9d7ca662008-11-22 23:15:01[diff] [blame]161 strbuf_expand(&expanded_path, interpolated_path,
162 strbuf_expand_dict_cb, &dict);
163 strlcpy(interp_path, expanded_path.buf, PATH_MAX);
164 strbuf_release(&expanded_path);
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]165 loginfo("Interpolated dir '%s'", interp_path);
166
167 dir = interp_path;
168 }
Junio C Hamano603968d2006-02-05 06:27:29[diff] [blame]169 else if (base_path) {
170 if (*dir != '/') {
171 /* Allow only absolute */
Mark Wooding1fda3d52006-02-03 20:27:02[diff] [blame]172 logerror("'%s': Non-absolute path denied (base-path active)", dir);
Petr Baudisb21c31c2005-12-23 01:27:40[diff] [blame]173 return NULL;
174 }
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]175 snprintf(rpath, PATH_MAX, "%s%s", base_path, dir);
176 dir = rpath;
Petr Baudisb21c31c2005-12-23 01:27:40[diff] [blame]177 }
178
René Scharfea5839712008-12-26 10:01:57[diff] [blame]179 path = enter_repo(dir, strict_paths);
180 if (!path && base_path && base_path_relaxed) {
Jens Axboe73a7a652007-07-27 21:00:29[diff] [blame]181 /*
182 * if we fail and base_path_relaxed is enabled, try without
183 * prefixing the base path
184 */
René Scharfea5839712008-12-26 10:01:57[diff] [blame]185 dir = directory;
186 path = enter_repo(dir, strict_paths);
187 }
H. Peter Anvin3e04c622005-10-19 01:26:52[diff] [blame]188
Andreas Ericsson4dbd1352005-11-17 19:37:14[diff] [blame]189 if (!path) {
Jeff King05ac6b32009-03-04 08:32:29[diff] [blame]190 logerror("'%s' does not appear to be a git repository", dir);
Andreas Ericsson4dbd1352005-11-17 19:37:14[diff] [blame]191 return NULL;
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]192 }
193
194 if ( ok_paths && *ok_paths ) {
Junio C Hamanoce335fe2005-11-21 09:21:18[diff] [blame]195 char **pp;
Andreas Ericsson4dbd1352005-11-17 19:37:14[diff] [blame]196 int pathlen = strlen(path);
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]197
Junio C Hamanoce335fe2005-11-21 09:21:18[diff] [blame]198 /* The validation is done on the paths after enter_repo
Junio C Hamanoa6080a02007-06-07 07:04:01[diff] [blame]199 * appends optional {.git,.git/.git} and friends, but
Junio C Hamanod79374c2005-12-03 09:45:57[diff] [blame]200 * it does not use getcwd(). So if your /pub is
201 * a symlink to /mnt/pub, you can whitelist /pub and
202 * do not have to say /mnt/pub.
203 * Do not say /pub/.
Junio C Hamanoce335fe2005-11-21 09:21:18[diff] [blame]204 */
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]205 for ( pp = ok_paths ; *pp ; pp++ ) {
206 int len = strlen(*pp);
Junio C Hamanoce335fe2005-11-21 09:21:18[diff] [blame]207 if (len <= pathlen &&
208 !memcmp(*pp, path, len) &&
209 (path[len] == '\0' ||
210 (!strict_paths && path[len] == '/')))
211 return path;
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]212 }
Andreas Ericsson4dbd1352005-11-17 19:37:14[diff] [blame]213 }
214 else {
215 /* be backwards compatible */
216 if (!strict_paths)
217 return path;
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]218 }
219
Andreas Ericsson4dbd1352005-11-17 19:37:14[diff] [blame]220 logerror("'%s': not in whitelist", path);
221 return NULL; /* Fallthrough. Deny by default */
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]222}
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]223
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]224typedef int (*daemon_service_fn)(void);
225struct daemon_service {
226 const char *name;
227 const char *config_name;
228 daemon_service_fn fn;
229 int enabled;
230 int overridable;
231};
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]232
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]233static struct daemon_service *service_looking_at;
234static int service_enabled;
235
Johannes Schindelinef90d6d2008-05-14 17:46:53[diff] [blame]236static int git_daemon_config(const char *var, const char *value, void *cb)
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]237{
Christian Couder59556542013-11-30 20:55:40[diff] [blame]238 if (starts_with(var, "daemon.") &&
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]239 !strcmp(var + 7, service_looking_at->config_name)) {
240 service_enabled = git_config_bool(var, value);
241 return 0;
242 }
243
244 /* we are not interested in parsing any other configuration here */
245 return 0;
246}
247
Jeff Kingd5570f42011-10-14 21:19:21[diff] [blame]248static int daemon_error(const char *dir, const char *msg)
249{
250 if (!informative_errors)
251 msg = "access denied or repository not exported";
252 packet_write(1, "ERR %s: %s", msg, dir);
253 return -1;
254}
255
Junio C Hamano93741e42012-08-14 18:37:51[diff] [blame]256static char *access_hook;
257
258static int run_access_hook(struct daemon_service *service, const char *dir, const char *path)
259{
260 struct child_process child;
261 struct strbuf buf = STRBUF_INIT;
262 const char *argv[8];
263 const char **arg = argv;
264 char *eol;
265 int seen_errors = 0;
266
267#define STRARG(x) ((x) ? (x) : "")
268 *arg++ = access_hook;
269 *arg++ = service->name;
270 *arg++ = path;
271 *arg++ = STRARG(hostname);
272 *arg++ = STRARG(canon_hostname);
273 *arg++ = STRARG(ip_address);
274 *arg++ = STRARG(tcp_port);
275 *arg = NULL;
276#undef STRARG
277
278 memset(&child, 0, sizeof(child));
279 child.use_shell = 1;
280 child.argv = argv;
281 child.no_stdin = 1;
282 child.no_stderr = 1;
283 child.out = -1;
284 if (start_command(&child)) {
285 logerror("daemon access hook '%s' failed to start",
286 access_hook);
287 goto error_return;
288 }
289 if (strbuf_read(&buf, child.out, 0) < 0) {
290 logerror("failed to read from pipe to daemon access hook '%s'",
291 access_hook);
292 strbuf_reset(&buf);
293 seen_errors = 1;
294 }
295 if (close(child.out) < 0) {
296 logerror("failed to close pipe to daemon access hook '%s'",
297 access_hook);
298 seen_errors = 1;
299 }
300 if (finish_command(&child))
301 seen_errors = 1;
302
303 if (!seen_errors) {
304 strbuf_release(&buf);
305 return 0;
306 }
307
308error_return:
309 strbuf_ltrim(&buf);
310 if (!buf.len)
311 strbuf_addstr(&buf, "service rejected");
312 eol = strchr(buf.buf, '\n');
313 if (eol)
314 *eol = '\0';
315 errno = EACCES;
316 daemon_error(dir, buf.buf);
317 strbuf_release(&buf);
318 return -1;
319}
320
René Scharfea47551c2008-11-22 23:21:52[diff] [blame]321static int run_service(char *dir, struct daemon_service *service)
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]322{
323 const char *path;
324 int enabled = service->enabled;
325
René Scharfea47551c2008-11-22 23:21:52[diff] [blame]326 loginfo("Request %s for '%s'", service->name, dir);
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]327
328 if (!enabled && !service->overridable) {
329 logerror("'%s': service not enabled.", service->name);
330 errno = EACCES;
Jeff Kingd5570f42011-10-14 21:19:21[diff] [blame]331 return daemon_error(dir, "service not enabled");
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]332 }
Andreas Ericsson4dbd1352005-11-17 19:37:14[diff] [blame]333
René Scharfea47551c2008-11-22 23:21:52[diff] [blame]334 if (!(path = path_ok(dir)))
Jeff Kingd5570f42011-10-14 21:19:21[diff] [blame]335 return daemon_error(dir, "no such repository");
H. Peter Anvin47888f02005-09-27 15:49:40[diff] [blame]336
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]337 /*
338 * Security on the cheap.
339 *
Junio C Hamanoa935c392005-10-21 06:19:36[diff] [blame]340 * We want a readable HEAD, usable "objects" directory, and
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]341 * a "git-daemon-export-ok" flag that says that the other side
342 * is ok with us doing this.
Andreas Ericsson4dbd1352005-11-17 19:37:14[diff] [blame]343 *
344 * path_ok() uses enter_repo() and does whitelist checking.
345 * We only need to make sure the repository is exported.
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]346 */
Andreas Ericsson4dbd1352005-11-17 19:37:14[diff] [blame]347
H. Peter Anvin3e04c622005-10-19 01:26:52[diff] [blame]348 if (!export_all_trees && access("git-daemon-export-ok", F_OK)) {
Andreas Ericsson4dbd1352005-11-17 19:37:14[diff] [blame]349 logerror("'%s': repository not exported.", path);
H. Peter Anvin3e04c622005-10-19 01:26:52[diff] [blame]350 errno = EACCES;
Jeff Kingd5570f42011-10-14 21:19:21[diff] [blame]351 return daemon_error(dir, "repository not exported");
H. Peter Anvin3e04c622005-10-19 01:26:52[diff] [blame]352 }
353
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]354 if (service->overridable) {
355 service_looking_at = service;
356 service_enabled = -1;
Johannes Schindelinef90d6d2008-05-14 17:46:53[diff] [blame]357 git_config(git_daemon_config, NULL);
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]358 if (0 <= service_enabled)
359 enabled = service_enabled;
360 }
361 if (!enabled) {
362 logerror("'%s': service not enabled for '%s'",
363 service->name, path);
364 errno = EACCES;
Jeff Kingd5570f42011-10-14 21:19:21[diff] [blame]365 return daemon_error(dir, "service not enabled");
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]366 }
367
Linus Torvalds02d57da2005-07-16 05:53:31[diff] [blame]368 /*
Junio C Hamano93741e42012-08-14 18:37:51[diff] [blame]369 * Optionally, a hook can choose to deny access to the
370 * repository depending on the phase of the moon.
371 */
372 if (access_hook && run_access_hook(service, dir, path))
373 return -1;
374
375 /*
Linus Torvalds02d57da2005-07-16 05:53:31[diff] [blame]376 * We'll ignore SIGTERM from now on, we have a
377 * good client.
378 */
379 signal(SIGTERM, SIG_IGN);
380
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]381 return service->fn();
382}
383
Johannes Sixt5d87dd42009-06-14 20:38:51[diff] [blame]384static void copy_to_log(int fd)
385{
386 struct strbuf line = STRBUF_INIT;
387 FILE *fp;
388
389 fp = fdopen(fd, "r");
390 if (fp == NULL) {
391 logerror("fdopen of error channel failed");
392 close(fd);
393 return;
394 }
395
396 while (strbuf_getline(&line, fp, '\n') != EOF) {
397 logerror("%s", line.buf);
398 strbuf_setlen(&line, 0);
399 }
400
401 strbuf_release(&line);
402 fclose(fp);
403}
404
405static int run_service_command(const char **argv)
406{
407 struct child_process cld;
408
409 memset(&cld, 0, sizeof(cld));
410 cld.argv = argv;
411 cld.git_cmd = 1;
412 cld.err = -1;
413 if (start_command(&cld))
414 return -1;
415
416 close(0);
417 close(1);
418
419 copy_to_log(cld.err);
420
421 return finish_command(&cld);
422}
423
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]424static int upload_pack(void)
425{
426 /* Timeout as string */
427 char timeout_buf[64];
Gary V. Vaughan66dbfd52010-05-14 09:31:33[diff] [blame]428 const char *argv[] = { "upload-pack", "--strict", NULL, ".", NULL };
429
430 argv[2] = timeout_buf;
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]431
H. Peter Anvin960decc2005-10-19 21:27:01[diff] [blame]432 snprintf(timeout_buf, sizeof timeout_buf, "--timeout=%u", timeout);
Johannes Sixt5d87dd42009-06-14 20:38:51[diff] [blame]433 return run_service_command(argv);
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]434}
435
Franck Bui-Huu39345a22006-09-07 13:12:05[diff] [blame]436static int upload_archive(void)
437{
Johannes Sixt5d87dd42009-06-14 20:38:51[diff] [blame]438 static const char *argv[] = { "upload-archive", ".", NULL };
439 return run_service_command(argv);
Franck Bui-Huu39345a22006-09-07 13:12:05[diff] [blame]440}
441
Linus Torvalds4b3b1e12007-01-21 19:04:13[diff] [blame]442static int receive_pack(void)
443{
Johannes Sixt5d87dd42009-06-14 20:38:51[diff] [blame]444 static const char *argv[] = { "receive-pack", ".", NULL };
445 return run_service_command(argv);
Linus Torvalds4b3b1e12007-01-21 19:04:13[diff] [blame]446}
447
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]448static struct daemon_service daemon_service[] = {
Franck Bui-Huu39345a22006-09-07 13:12:05[diff] [blame]449 { "upload-archive", "uploadarch", upload_archive, 0, 1 },
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]450 { "upload-pack", "uploadpack", upload_pack, 1, 1 },
Linus Torvalds4b3b1e12007-01-21 19:04:13[diff] [blame]451 { "receive-pack", "receivepack", receive_pack, 0, 1 },
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]452};
453
Junio C Hamanof3fa1832007-11-08 23:35:32[diff] [blame]454static void enable_service(const char *name, int ena)
455{
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]456 int i;
457 for (i = 0; i < ARRAY_SIZE(daemon_service); i++) {
458 if (!strcmp(daemon_service[i].name, name)) {
459 daemon_service[i].enabled = ena;
460 return;
461 }
462 }
463 die("No such service %s", name);
464}
465
Junio C Hamanof3fa1832007-11-08 23:35:32[diff] [blame]466static void make_service_overridable(const char *name, int ena)
467{
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]468 int i;
469 for (i = 0; i < ARRAY_SIZE(daemon_service); i++) {
470 if (!strcmp(daemon_service[i].name, name)) {
471 daemon_service[i].overridable = ena;
472 return;
473 }
474 }
475 die("No such service %s", name);
476}
477
René Scharfe6720e952008-12-26 10:12:15[diff] [blame]478static char *xstrdup_tolower(const char *str)
479{
480 char *p, *dup = xstrdup(str);
481 for (p = dup; *p; p++)
482 *p = tolower(*p);
483 return dup;
484}
485
Ilari Liusvaarae8dbd762010-01-26 18:24:41[diff] [blame]486static void parse_host_and_port(char *hostport, char **host,
487 char **port)
488{
489 if (*hostport == '[') {
490 char *end;
491
492 end = strchr(hostport, ']');
493 if (!end)
Junio C Hamano9517e6b2010-02-04 05:23:18[diff] [blame]494 die("Invalid request ('[' without ']')");
Ilari Liusvaarae8dbd762010-01-26 18:24:41[diff] [blame]495 *end = '\0';
496 *host = hostport + 1;
497 if (!end[1])
498 *port = NULL;
499 else if (end[1] == ':')
500 *port = end + 2;
501 else
502 die("Garbage after end of host part");
503 } else {
504 *host = hostport;
505 *port = strrchr(hostport, ':');
506 if (*port) {
Imre Deake9bd3232010-03-20 02:23:58[diff] [blame]507 **port = '\0';
Ilari Liusvaarae8dbd762010-01-26 18:24:41[diff] [blame]508 ++*port;
509 }
510 }
511}
512
Jon Loeligereb30aed2006-09-27 16:16:10[diff] [blame]513/*
Shawn O. Pearce73bb33a2009-06-05 01:33:32[diff] [blame]514 * Read the host as supplied by the client connection.
Jon Loeligereb30aed2006-09-27 16:16:10[diff] [blame]515 */
Shawn O. Pearce73bb33a2009-06-05 01:33:32[diff] [blame]516static void parse_host_arg(char *extra_args, int buflen)
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]517{
518 char *val;
519 int vallen;
520 char *end = extra_args + buflen;
521
Shawn O. Pearce73bb33a2009-06-05 01:33:32[diff] [blame]522 if (extra_args < end && *extra_args) {
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]523 saw_extended_args = 1;
524 if (strncasecmp("host=", extra_args, 5) == 0) {
525 val = extra_args + 5;
526 vallen = strlen(val) + 1;
527 if (*val) {
Jon Loeligereb30aed2006-09-27 16:16:10[diff] [blame]528 /* Split <host>:<port> at colon. */
Ilari Liusvaarae8dbd762010-01-26 18:24:41[diff] [blame]529 char *host;
530 char *port;
531 parse_host_and_port(val, &host, &port);
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]532 if (port) {
René Scharfe9d7ca662008-11-22 23:15:01[diff] [blame]533 free(tcp_port);
534 tcp_port = xstrdup(port);
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]535 }
René Scharfe9d7ca662008-11-22 23:15:01[diff] [blame]536 free(hostname);
René Scharfe6720e952008-12-26 10:12:15[diff] [blame]537 hostname = xstrdup_tolower(host);
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]538 }
Jon Loeligereb30aed2006-09-27 16:16:10[diff] [blame]539
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]540 /* On to the next one */
541 extra_args = val + vallen;
542 }
Shawn O. Pearce73bb33a2009-06-05 01:33:32[diff] [blame]543 if (extra_args < end && *extra_args)
544 die("Invalid request");
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]545 }
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]546
547 /*
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]548 * Locate canonical hostname and its IP address.
549 */
René Scharfe6720e952008-12-26 10:12:15[diff] [blame]550 if (hostname) {
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]551#ifndef NO_IPV6
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]552 struct addrinfo hints;
Benjamin Kramer3e8a00a2009-04-27 13:59:49[diff] [blame]553 struct addrinfo *ai;
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]554 int gai;
555 static char addrbuf[HOST_NAME_MAX + 1];
556
557 memset(&hints, 0, sizeof(hints));
558 hints.ai_flags = AI_CANONNAME;
559
Linus Torvalds2af202b2009-06-18 17:28:43[diff] [blame]560 gai = getaddrinfo(hostname, NULL, &hints, &ai);
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]561 if (!gai) {
Benjamin Kramer3e8a00a2009-04-27 13:59:49[diff] [blame]562 struct sockaddr_in *sin_addr = (void *)ai->ai_addr;
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]563
Benjamin Kramer3e8a00a2009-04-27 13:59:49[diff] [blame]564 inet_ntop(AF_INET, &sin_addr->sin_addr,
565 addrbuf, sizeof(addrbuf));
566 free(ip_address);
567 ip_address = xstrdup(addrbuf);
568
569 free(canon_hostname);
570 canon_hostname = xstrdup(ai->ai_canonname ?
571 ai->ai_canonname : ip_address);
572
573 freeaddrinfo(ai);
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]574 }
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]575#else
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]576 struct hostent *hent;
577 struct sockaddr_in sa;
578 char **ap;
579 static char addrbuf[HOST_NAME_MAX + 1];
580
René Scharfe9d7ca662008-11-22 23:15:01[diff] [blame]581 hent = gethostbyname(hostname);
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]582
583 ap = hent->h_addr_list;
584 memset(&sa, 0, sizeof sa);
585 sa.sin_family = hent->h_addrtype;
586 sa.sin_port = htons(0);
587 memcpy(&sa.sin_addr, *ap, hent->h_length);
588
589 inet_ntop(hent->h_addrtype, &sa.sin_addr,
590 addrbuf, sizeof(addrbuf));
Jon Loeligereb30aed2006-09-27 16:16:10[diff] [blame]591
René Scharfe9d7ca662008-11-22 23:15:01[diff] [blame]592 free(canon_hostname);
593 canon_hostname = xstrdup(hent->h_name);
594 free(ip_address);
595 ip_address = xstrdup(addrbuf);
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]596#endif
René Scharfe6720e952008-12-26 10:12:15[diff] [blame]597 }
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]598}
599
600
Erik Faye-Lundf9c87be2010-11-04 01:35:19[diff] [blame]601static int execute(void)
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]602{
Jeff King74543a02013-02-20 20:02:57[diff] [blame]603 char *line = packet_buffer;
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]604 int pktlen, len, i;
Erik Faye-Lundf9c87be2010-11-04 01:35:19[diff] [blame]605 char *addr = getenv("REMOTE_ADDR"), *port = getenv("REMOTE_PORT");
Linus Torvalds7d806942005-07-15 16:27:05[diff] [blame]606
Erik Faye-Lundf9c87be2010-11-04 01:35:19[diff] [blame]607 if (addr)
608 loginfo("Connection from %s:%s", addr, port);
David Woodhouse5b276ee2006-06-20 14:38:13[diff] [blame]609
H. Peter Anvin960decc2005-10-19 21:27:01[diff] [blame]610 alarm(init_timeout ? init_timeout : timeout);
Jeff King4981fe72013-02-23 22:31:34[diff] [blame]611 pktlen = packet_read(0, NULL, NULL, packet_buffer, sizeof(packet_buffer), 0);
H. Peter Anvin960decc2005-10-19 21:27:01[diff] [blame]612 alarm(0);
Linus Torvalds7d806942005-07-15 16:27:05[diff] [blame]613
Jon Loeliger5ad312b2006-06-07 03:58:41[diff] [blame]614 len = strlen(line);
615 if (pktlen != len)
616 loginfo("Extended attributes (%d bytes) exist <%.*s>",
617 (int) pktlen - len,
618 (int) pktlen - len, line + len + 1);
Junio C Hamano83543a22006-10-24 01:26:05[diff] [blame]619 if (len && line[len-1] == '\n') {
Linus Torvalds7d806942005-07-15 16:27:05[diff] [blame]620 line[--len] = 0;
Junio C Hamano83543a22006-10-24 01:26:05[diff] [blame]621 pktlen--;
622 }
Linus Torvalds7d806942005-07-15 16:27:05[diff] [blame]623
René Scharfe9d7ca662008-11-22 23:15:01[diff] [blame]624 free(hostname);
625 free(canon_hostname);
626 free(ip_address);
627 free(tcp_port);
René Scharfea47551c2008-11-22 23:21:52[diff] [blame]628 hostname = canon_hostname = ip_address = tcp_port = NULL;
Jon Loeligereb30aed2006-09-27 16:16:10[diff] [blame]629
René Scharfed433ed02008-11-22 23:19:09[diff] [blame]630 if (len != pktlen)
Shawn O. Pearce73bb33a2009-06-05 01:33:32[diff] [blame]631 parse_host_arg(line + len + 1, pktlen - len - 1);
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]632
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]633 for (i = 0; i < ARRAY_SIZE(daemon_service); i++) {
634 struct daemon_service *s = &(daemon_service[i]);
635 int namelen = strlen(s->name);
Christian Couder59556542013-11-30 20:55:40[diff] [blame]636 if (starts_with(line, "git-") &&
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]637 !strncmp(s->name, line + 4, namelen) &&
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]638 line[namelen + 4] == ' ') {
Jon Loeligereb30aed2006-09-27 16:16:10[diff] [blame]639 /*
640 * Note: The directory here is probably context sensitive,
641 * and might depend on the actual service being performed.
642 */
René Scharfea47551c2008-11-22 23:21:52[diff] [blame]643 return run_service(line + namelen + 5, s);
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]644 }
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]645 }
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]646
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]647 logerror("Protocol error: '%s'", line);
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]648 return -1;
649}
650
Erik Faye-Lund15515b72010-01-09 14:13:28[diff] [blame]651static int addrcmp(const struct sockaddr_storage *s1,
652 const struct sockaddr_storage *s2)
653{
Brandon Casey3aff8742010-03-15 22:10:06[diff] [blame]654 const struct sockaddr *sa1 = (const struct sockaddr*) s1;
655 const struct sockaddr *sa2 = (const struct sockaddr*) s2;
656
657 if (sa1->sa_family != sa2->sa_family)
658 return sa1->sa_family - sa2->sa_family;
659 if (sa1->sa_family == AF_INET)
Erik Faye-Lund15515b72010-01-09 14:13:28[diff] [blame]660 return memcmp(&((struct sockaddr_in *)s1)->sin_addr,
661 &((struct sockaddr_in *)s2)->sin_addr,
662 sizeof(struct in_addr));
663#ifndef NO_IPV6
Brandon Casey3aff8742010-03-15 22:10:06[diff] [blame]664 if (sa1->sa_family == AF_INET6)
Erik Faye-Lund15515b72010-01-09 14:13:28[diff] [blame]665 return memcmp(&((struct sockaddr_in6 *)s1)->sin6_addr,
666 &((struct sockaddr_in6 *)s2)->sin6_addr,
667 sizeof(struct in6_addr));
668#endif
669 return 0;
670}
671
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]672static int max_connections = 32;
Linus Torvalds66e631d2005-07-16 04:51:57[diff] [blame]673
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]674static unsigned int live_children;
Linus Torvalds66e631d2005-07-16 04:51:57[diff] [blame]675
Linus Torvalds4d8fa912005-08-01 19:11:53[diff] [blame]676static struct child {
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]677 struct child *next;
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]678 struct child_process cld;
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]679 struct sockaddr_storage address;
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]680} *firstborn;
Linus Torvalds66e631d2005-07-16 04:51:57[diff] [blame]681
Erik Faye-Lundc295cf02010-11-04 01:35:22[diff] [blame]682static void add_child(struct child_process *cld, struct sockaddr *addr, socklen_t addrlen)
Linus Torvalds66e631d2005-07-16 04:51:57[diff] [blame]683{
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]684 struct child *newborn, **cradle;
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]685
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]686 newborn = xcalloc(1, sizeof(*newborn));
687 live_children++;
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]688 memcpy(&newborn->cld, cld, sizeof(*cld));
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]689 memcpy(&newborn->address, addr, addrlen);
690 for (cradle = &firstborn; *cradle; cradle = &(*cradle)->next)
Erik Faye-Lund15515b72010-01-09 14:13:28[diff] [blame]691 if (!addrcmp(&(*cradle)->address, &newborn->address))
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]692 break;
693 newborn->next = *cradle;
694 *cradle = newborn;
Linus Torvalds66e631d2005-07-16 04:51:57[diff] [blame]695}
696
Linus Torvalds66e631d2005-07-16 04:51:57[diff] [blame]697/*
698 * This gets called if the number of connections grows
699 * past "max_connections".
700 *
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]701 * We kill the newest connection from a duplicate IP.
Linus Torvalds66e631d2005-07-16 04:51:57[diff] [blame]702 */
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]703static void kill_some_child(void)
Linus Torvalds66e631d2005-07-16 04:51:57[diff] [blame]704{
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]705 const struct child *blanket, *next;
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]706
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]707 if (!(blanket = firstborn))
708 return;
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]709
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]710 for (; (next = blanket->next); blanket = next)
Erik Faye-Lund15515b72010-01-09 14:13:28[diff] [blame]711 if (!addrcmp(&blanket->address, &next->address)) {
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]712 kill(blanket->cld.pid, SIGTERM);
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]713 break;
714 }
Linus Torvalds66e631d2005-07-16 04:51:57[diff] [blame]715}
716
Johannes Schindelina5a91262008-07-03 15:27:24[diff] [blame]717static void check_dead_children(void)
718{
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]719 int status;
720 pid_t pid;
Johannes Schindelina5a91262008-07-03 15:27:24[diff] [blame]721
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]722 struct child **cradle, *blanket;
723 for (cradle = &firstborn; (blanket = *cradle);)
724 if ((pid = waitpid(blanket->cld.pid, &status, WNOHANG)) > 1) {
725 const char *dead = "";
726 if (status)
727 dead = " (with error)";
728 loginfo("[%"PRIuMAX"] Disconnected%s", (uintmax_t)pid, dead);
729
730 /* remove the child */
731 *cradle = blanket->next;
732 live_children--;
733 free(blanket);
734 } else
735 cradle = &blanket->next;
Linus Torvalds02d57da2005-07-16 05:53:31[diff] [blame]736}
737
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]738static char **cld_argv;
Erik Faye-Lundc295cf02010-11-04 01:35:22[diff] [blame]739static void handle(int incoming, struct sockaddr *addr, socklen_t addrlen)
Linus Torvalds02d57da2005-07-16 05:53:31[diff] [blame]740{
Stephen Boydc2e86ad2011-03-22 07:51:05[diff] [blame]741 struct child_process cld = { NULL };
Erik Faye-Lundf9c87be2010-11-04 01:35:19[diff] [blame]742 char addrbuf[300] = "REMOTE_ADDR=", portbuf[300];
743 char *env[] = { addrbuf, portbuf, NULL };
Linus Torvalds02d57da2005-07-16 05:53:31[diff] [blame]744
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]745 if (max_connections && live_children >= max_connections) {
746 kill_some_child();
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]747 sleep(1); /* give it some time to die */
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]748 check_dead_children();
749 if (live_children >= max_connections) {
750 close(incoming);
751 logerror("Too many children, dropping connection");
Linus Torvalds02d57da2005-07-16 05:53:31[diff] [blame]752 return;
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]753 }
754 }
Linus Torvalds02d57da2005-07-16 05:53:31[diff] [blame]755
Erik Faye-Lundf9c87be2010-11-04 01:35:19[diff] [blame]756 if (addr->sa_family == AF_INET) {
757 struct sockaddr_in *sin_addr = (void *) addr;
758 inet_ntop(addr->sa_family, &sin_addr->sin_addr, addrbuf + 12,
759 sizeof(addrbuf) - 12);
760 snprintf(portbuf, sizeof(portbuf), "REMOTE_PORT=%d",
761 ntohs(sin_addr->sin_port));
762#ifndef NO_IPV6
Stefan Beller5d9cfa22013-07-14 21:35:46[diff] [blame]763 } else if (addr->sa_family == AF_INET6) {
Erik Faye-Lundf9c87be2010-11-04 01:35:19[diff] [blame]764 struct sockaddr_in6 *sin6_addr = (void *) addr;
765
766 char *buf = addrbuf + 12;
767 *buf++ = '['; *buf = '\0'; /* stpcpy() is cool */
768 inet_ntop(AF_INET6, &sin6_addr->sin6_addr, buf,
769 sizeof(addrbuf) - 13);
770 strcat(buf, "]");
771
772 snprintf(portbuf, sizeof(portbuf), "REMOTE_PORT=%d",
773 ntohs(sin6_addr->sin6_port));
774#endif
775 }
776
777 cld.env = (const char **)env;
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]778 cld.argv = (const char **)cld_argv;
779 cld.in = incoming;
780 cld.out = dup(incoming);
Linus Torvalds02d57da2005-07-16 05:53:31[diff] [blame]781
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]782 if (start_command(&cld))
783 logerror("unable to fork");
784 else
785 add_child(&cld, addr, addrlen);
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]786 close(incoming);
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]787}
788
Linus Torvaldseaa94912005-07-16 03:42:28[diff] [blame]789static void child_handler(int signo)
790{
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]791 /*
792 * Otherwise empty handler because systemcalls will get interrupted
Stephen R. van den Berg695605b2008-08-14 18:02:20[diff] [blame]793 * upon signal receipt
794 * SysV needs the handler to be rearmed
795 */
Stephen R. van den Bergbd7b3712008-08-12 19:36:13[diff] [blame]796 signal(SIGCHLD, child_handler);
Linus Torvaldseaa94912005-07-16 03:42:28[diff] [blame]797}
798
Mark Wooding1955fab2006-02-03 20:27:04[diff] [blame]799static int set_reuse_addr(int sockfd)
800{
801 int on = 1;
802
803 if (!reuseaddr)
804 return 0;
805 return setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR,
806 &on, sizeof(on));
807}
808
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]809struct socketlist {
810 int *list;
811 size_t nr;
812 size_t alloc;
813};
814
Nguyễn Thái Ngọc Duy089d82e2011-10-03 19:13:28[diff] [blame]815static const char *ip2str(int family, struct sockaddr *sin, socklen_t len)
816{
817#ifdef NO_IPV6
818 static char ip[INET_ADDRSTRLEN];
819#else
820 static char ip[INET6_ADDRSTRLEN];
821#endif
822
823 switch (family) {
824#ifndef NO_IPV6
825 case AF_INET6:
826 inet_ntop(family, &((struct sockaddr_in6*)sin)->sin6_addr, ip, len);
827 break;
828#endif
829 case AF_INET:
830 inet_ntop(family, &((struct sockaddr_in*)sin)->sin_addr, ip, len);
831 break;
832 default:
833 strcpy(ip, "<unknown>");
834 }
835 return ip;
836}
837
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]838#ifndef NO_IPV6
839
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]840static int setup_named_sock(char *listen_addr, int listen_port, struct socketlist *socklist)
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]841{
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]842 int socknum = 0;
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]843 int maxfd = -1;
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]844 char pbuf[NI_MAXSERV];
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]845 struct addrinfo hints, *ai0, *ai;
846 int gai;
Alexandre Julliard20276882007-02-14 17:10:26[diff] [blame]847 long flags;
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]848
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]849 sprintf(pbuf, "%d", listen_port);
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]850 memset(&hints, 0, sizeof(hints));
851 hints.ai_family = AF_UNSPEC;
852 hints.ai_socktype = SOCK_STREAM;
853 hints.ai_protocol = IPPROTO_TCP;
854 hints.ai_flags = AI_PASSIVE;
855
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]856 gai = getaddrinfo(listen_addr, pbuf, &hints, &ai0);
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]857 if (gai) {
858 logerror("getaddrinfo() for %s failed: %s", listen_addr, gai_strerror(gai));
859 return 0;
860 }
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]861
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]862 for (ai = ai0; ai; ai = ai->ai_next) {
863 int sockfd;
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]864
865 sockfd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
866 if (sockfd < 0)
867 continue;
868 if (sockfd >= FD_SETSIZE) {
Stephen R. van den Bergdf0daf82008-08-14 18:02:20[diff] [blame]869 logerror("Socket descriptor too large");
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]870 close(sockfd);
871 continue;
872 }
873
874#ifdef IPV6_V6ONLY
875 if (ai->ai_family == AF_INET6) {
876 int on = 1;
877 setsockopt(sockfd, IPPROTO_IPV6, IPV6_V6ONLY,
878 &on, sizeof(on));
879 /* Note: error is not fatal */
880 }
881#endif
882
Mark Wooding1955fab2006-02-03 20:27:04[diff] [blame]883 if (set_reuse_addr(sockfd)) {
Nguyễn Thái Ngọc Duy089d82e2011-10-03 19:13:28[diff] [blame]884 logerror("Could not set SO_REUSEADDR: %s", strerror(errno));
Mark Wooding1955fab2006-02-03 20:27:04[diff] [blame]885 close(sockfd);
Serge E. Hallyn0032d542006-04-18 13:11:06[diff] [blame]886 continue;
Mark Wooding1955fab2006-02-03 20:27:04[diff] [blame]887 }
888
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]889 if (bind(sockfd, ai->ai_addr, ai->ai_addrlen) < 0) {
Nguyễn Thái Ngọc Duy089d82e2011-10-03 19:13:28[diff] [blame]890 logerror("Could not bind to %s: %s",
891 ip2str(ai->ai_family, ai->ai_addr, ai->ai_addrlen),
892 strerror(errno));
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]893 close(sockfd);
894 continue; /* not fatal */
895 }
896 if (listen(sockfd, 5) < 0) {
Nguyễn Thái Ngọc Duy089d82e2011-10-03 19:13:28[diff] [blame]897 logerror("Could not listen to %s: %s",
898 ip2str(ai->ai_family, ai->ai_addr, ai->ai_addrlen),
899 strerror(errno));
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]900 close(sockfd);
901 continue; /* not fatal */
902 }
903
Alexandre Julliard20276882007-02-14 17:10:26[diff] [blame]904 flags = fcntl(sockfd, F_GETFD, 0);
905 if (flags >= 0)
906 fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC);
907
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]908 ALLOC_GROW(socklist->list, socklist->nr + 1, socklist->alloc);
909 socklist->list[socklist->nr++] = sockfd;
910 socknum++;
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]911
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]912 if (maxfd < sockfd)
913 maxfd = sockfd;
914 }
915
916 freeaddrinfo(ai0);
917
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]918 return socknum;
919}
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]920
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]921#else /* NO_IPV6 */
922
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]923static int setup_named_sock(char *listen_addr, int listen_port, struct socketlist *socklist)
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]924{
925 struct sockaddr_in sin;
926 int sockfd;
Alexandre Julliard20276882007-02-14 17:10:26[diff] [blame]927 long flags;
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]928
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]929 memset(&sin, 0, sizeof sin);
930 sin.sin_family = AF_INET;
931 sin.sin_port = htons(listen_port);
932
933 if (listen_addr) {
934 /* Well, host better be an IP address here. */
935 if (inet_pton(AF_INET, listen_addr, &sin.sin_addr.s_addr) <= 0)
936 return 0;
937 } else {
938 sin.sin_addr.s_addr = htonl(INADDR_ANY);
939 }
940
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]941 sockfd = socket(AF_INET, SOCK_STREAM, 0);
942 if (sockfd < 0)
943 return 0;
944
Mark Wooding1955fab2006-02-03 20:27:04[diff] [blame]945 if (set_reuse_addr(sockfd)) {
Nguyễn Thái Ngọc Duy089d82e2011-10-03 19:13:28[diff] [blame]946 logerror("Could not set SO_REUSEADDR: %s", strerror(errno));
Mark Wooding1955fab2006-02-03 20:27:04[diff] [blame]947 close(sockfd);
948 return 0;
949 }
950
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]951 if ( bind(sockfd, (struct sockaddr *)&sin, sizeof sin) < 0 ) {
Nguyễn Thái Ngọc Duy089d82e2011-10-03 19:13:28[diff] [blame]952 logerror("Could not listen to %s: %s",
953 ip2str(AF_INET, (struct sockaddr *)&sin, sizeof(sin)),
954 strerror(errno));
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]955 close(sockfd);
956 return 0;
957 }
958
Paul Sericef35230f2005-11-21 17:07:23[diff] [blame]959 if (listen(sockfd, 5) < 0) {
Nguyễn Thái Ngọc Duy089d82e2011-10-03 19:13:28[diff] [blame]960 logerror("Could not listen to %s: %s",
961 ip2str(AF_INET, (struct sockaddr *)&sin, sizeof(sin)),
962 strerror(errno));
Paul Sericef35230f2005-11-21 17:07:23[diff] [blame]963 close(sockfd);
964 return 0;
965 }
966
Alexandre Julliard20276882007-02-14 17:10:26[diff] [blame]967 flags = fcntl(sockfd, F_GETFD, 0);
968 if (flags >= 0)
969 fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC);
970
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]971 ALLOC_GROW(socklist->list, socklist->nr + 1, socklist->alloc);
972 socklist->list[socklist->nr++] = sockfd;
Paul Sericef35230f2005-11-21 17:07:23[diff] [blame]973 return 1;
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]974}
975
976#endif
977
Alexander Sulfrian3a3a29c2010-08-30 11:30:51[diff] [blame]978static void socksetup(struct string_list *listen_addr, int listen_port, struct socketlist *socklist)
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]979{
Alexander Sulfrian3a3a29c2010-08-30 11:30:51[diff] [blame]980 if (!listen_addr->nr)
981 setup_named_sock(NULL, listen_port, socklist);
982 else {
983 int i, socknum;
984 for (i = 0; i < listen_addr->nr; i++) {
985 socknum = setup_named_sock(listen_addr->items[i].string,
986 listen_port, socklist);
987
988 if (socknum == 0)
989 logerror("unable to allocate any listen sockets for host %s on port %u",
990 listen_addr->items[i].string, listen_port);
991 }
992 }
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]993}
994
995static int service_loop(struct socketlist *socklist)
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]996{
997 struct pollfd *pfd;
998 int i;
999
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]1000 pfd = xcalloc(socklist->nr, sizeof(struct pollfd));
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]1001
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]1002 for (i = 0; i < socklist->nr; i++) {
1003 pfd[i].fd = socklist->list[i];
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]1004 pfd[i].events = POLLIN;
1005 }
H. Peter Anvin92202822005-09-30 18:01:57[diff] [blame]1006
1007 signal(SIGCHLD, child_handler);
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]1008
1009 for (;;) {
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]1010 int i;
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]1011
Stephen R. van den Berg695605b2008-08-14 18:02:20[diff] [blame]1012 check_dead_children();
1013
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]1014 if (poll(pfd, socklist->nr, -1) < 0) {
Junio C Hamano1eef0b32005-07-26 20:26:52[diff] [blame]1015 if (errno != EINTR) {
Stephen R. van den Bergdf0daf82008-08-14 18:02:20[diff] [blame]1016 logerror("Poll failed, resuming: %s",
Junio C Hamano1eef0b32005-07-26 20:26:52[diff] [blame]1017 strerror(errno));
1018 sleep(1);
1019 }
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]1020 continue;
1021 }
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]1022
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]1023 for (i = 0; i < socklist->nr; i++) {
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]1024 if (pfd[i].revents & POLLIN) {
Erik Faye-Lundf9c87be2010-11-04 01:35:19[diff] [blame]1025 union {
1026 struct sockaddr sa;
1027 struct sockaddr_in sai;
1028#ifndef NO_IPV6
1029 struct sockaddr_in6 sai6;
1030#endif
1031 } ss;
Erik Faye-Lundc295cf02010-11-04 01:35:22[diff] [blame]1032 socklen_t sslen = sizeof(ss);
Erik Faye-Lundf9c87be2010-11-04 01:35:19[diff] [blame]1033 int incoming = accept(pfd[i].fd, &ss.sa, &sslen);
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]1034 if (incoming < 0) {
1035 switch (errno) {
1036 case EAGAIN:
1037 case EINTR:
1038 case ECONNABORTED:
1039 continue;
1040 default:
Thomas Rastd824cbb2009-06-27 15:58:46[diff] [blame]1041 die_errno("accept returned");
YOSHIFUJI Hideakidf076bd2005-07-23 08:24:59[diff] [blame]1042 }
1043 }
Erik Faye-Lundf9c87be2010-11-04 01:35:19[diff] [blame]1044 handle(incoming, &ss.sa, sslen);
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]1045 }
1046 }
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]1047 }
1048}
1049
Erik Faye-Lunda666b472010-11-04 01:35:24[diff] [blame]1050#ifdef NO_POSIX_GOODIES
1051
1052struct credentials;
1053
1054static void drop_privileges(struct credentials *cred)
1055{
1056 /* nothing */
1057}
1058
1059static void daemonize(void)
1060{
1061 die("--detach not supported on this platform");
1062}
1063
1064static struct credentials *prepare_credentials(const char *user_name,
1065 const char *group_name)
1066{
1067 die("--user not supported on this platform");
1068}
1069
1070#else
1071
1072struct credentials {
1073 struct passwd *pass;
1074 gid_t gid;
1075};
1076
1077static void drop_privileges(struct credentials *cred)
1078{
1079 if (cred && (initgroups(cred->pass->pw_name, cred->gid) ||
1080 setgid (cred->gid) || setuid(cred->pass->pw_uid)))
1081 die("cannot drop privileges");
1082}
1083
1084static struct credentials *prepare_credentials(const char *user_name,
1085 const char *group_name)
1086{
1087 static struct credentials c;
1088
1089 c.pass = getpwnam(user_name);
1090 if (!c.pass)
1091 die("user not found - %s", user_name);
1092
1093 if (!group_name)
1094 c.gid = c.pass->pw_gid;
1095 else {
1096 struct group *group = getgrnam(group_name);
1097 if (!group)
1098 die("group not found - %s", group_name);
1099
1100 c.gid = group->gr_gid;
1101 }
1102
1103 return &c;
1104}
1105
Matthias Lederhofera5262762006-07-13 16:47:13[diff] [blame]1106static void daemonize(void)
1107{
1108 switch (fork()) {
1109 case 0:
1110 break;
1111 case -1:
Thomas Rastd824cbb2009-06-27 15:58:46[diff] [blame]1112 die_errno("fork failed");
Matthias Lederhofera5262762006-07-13 16:47:13[diff] [blame]1113 default:
1114 exit(0);
1115 }
1116 if (setsid() == -1)
Thomas Rastd824cbb2009-06-27 15:58:46[diff] [blame]1117 die_errno("setsid failed");
Matthias Lederhofera5262762006-07-13 16:47:13[diff] [blame]1118 close(0);
1119 close(1);
1120 close(2);
1121 sanitize_stdfds();
1122}
Erik Faye-Lunda666b472010-11-04 01:35:24[diff] [blame]1123#endif
Matthias Lederhofera5262762006-07-13 16:47:13[diff] [blame]1124
Matthias Lederhofer45ed5d72006-07-13 10:18:08[diff] [blame]1125static void store_pid(const char *path)
1126{
1127 FILE *f = fopen(path, "w");
1128 if (!f)
Thomas Rastd824cbb2009-06-27 15:58:46[diff] [blame]1129 die_errno("cannot open pid file '%s'", path);
David Soria Parra85e72832008-08-31 12:09:39[diff] [blame]1130 if (fprintf(f, "%"PRIuMAX"\n", (uintmax_t) getpid()) < 0 || fclose(f) != 0)
Thomas Rastd824cbb2009-06-27 15:58:46[diff] [blame]1131 die_errno("failed to write pid file '%s'", path);
Matthias Lederhofer45ed5d72006-07-13 10:18:08[diff] [blame]1132}
1133
Erik Faye-Lunda666b472010-11-04 01:35:24[diff] [blame]1134static int serve(struct string_list *listen_addr, int listen_port,
1135 struct credentials *cred)
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]1136{
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]1137 struct socketlist socklist = { NULL, 0, 0 };
Junio C Hamano4ae22d92005-10-21 06:21:50[diff] [blame]1138
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]1139 socksetup(listen_addr, listen_port, &socklist);
1140 if (socklist.nr == 0)
Alexander Sulfrian3a3a29c2010-08-30 11:30:51[diff] [blame]1141 die("unable to allocate any listen sockets on port %u",
1142 listen_port);
Junio C Hamano4ae22d92005-10-21 06:21:50[diff] [blame]1143
Erik Faye-Lunda666b472010-11-04 01:35:24[diff] [blame]1144 drop_privileges(cred);
Tilman Sauerbeck678dac62006-08-22 17:37:41[diff] [blame]1145
Clemens Buchacherf6a34cf2012-01-07 11:42:46[diff] [blame]1146 loginfo("Ready to rumble");
1147
Alexander Sulfrian2caa3212010-08-30 11:30:50[diff] [blame]1148 return service_loop(&socklist);
Junio C Hamano4ae22d92005-10-21 06:21:50[diff] [blame]1149}
Peter Anvin6573faf2005-09-29 00:26:44[diff] [blame]1150
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]1151int main(int argc, char **argv)
1152{
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]1153 int listen_port = 0;
Alexander Sulfrian3a3a29c2010-08-30 11:30:51[diff] [blame]1154 struct string_list listen_addr = STRING_LIST_INIT_NODUP;
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]1155 int serve_mode = 0, inetd_mode = 0;
Tilman Sauerbeck678dac62006-08-22 17:37:41[diff] [blame]1156 const char *pid_file = NULL, *user_name = NULL, *group_name = NULL;
Matthias Lederhofera5262762006-07-13 16:47:13[diff] [blame]1157 int detach = 0;
Erik Faye-Lunda666b472010-11-04 01:35:24[diff] [blame]1158 struct credentials *cred = NULL;
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]1159 int i;
1160
Ævar Arnfjörð Bjarmason5e9637c2011-11-17 23:14:42[diff] [blame]1161 git_setup_gettext();
1162
Steffen Prohaska2fb3f6d2009-01-18 12:00:12[diff] [blame]1163 git_extract_argv0_path(argv[0]);
1164
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]1165 for (i = 1; i < argc; i++) {
1166 char *arg = argv[i];
1167
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1168 if (starts_with(arg, "--listen=")) {
Alexander Sulfrian3a3a29c2010-08-30 11:30:51[diff] [blame]1169 string_list_append(&listen_addr, xstrdup_tolower(arg + 9));
René Scharfe6720e952008-12-26 10:12:15[diff] [blame]1170 continue;
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]1171 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1172 if (starts_with(arg, "--port=")) {
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]1173 char *end;
1174 unsigned long n;
1175 n = strtoul(arg+7, &end, 0);
1176 if (arg[7] && !*end) {
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]1177 listen_port = n;
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]1178 continue;
1179 }
1180 }
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]1181 if (!strcmp(arg, "--serve")) {
1182 serve_mode = 1;
1183 continue;
1184 }
Linus Torvaldse64e1b72005-07-15 16:32:16[diff] [blame]1185 if (!strcmp(arg, "--inetd")) {
1186 inetd_mode = 1;
Andreas Ericssona8883282005-11-16 23:38:29[diff] [blame]1187 log_syslog = 1;
Linus Torvaldse64e1b72005-07-15 16:32:16[diff] [blame]1188 continue;
1189 }
Petr Baudisf8ff0c02005-09-22 09:25:28[diff] [blame]1190 if (!strcmp(arg, "--verbose")) {
1191 verbose = 1;
1192 continue;
1193 }
Petr Baudis9048fe12005-09-24 14:13:01[diff] [blame]1194 if (!strcmp(arg, "--syslog")) {
1195 log_syslog = 1;
Petr Baudis9048fe12005-09-24 14:13:01[diff] [blame]1196 continue;
1197 }
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]1198 if (!strcmp(arg, "--export-all")) {
1199 export_all_trees = 1;
1200 continue;
1201 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1202 if (starts_with(arg, "--access-hook=")) {
Junio C Hamano93741e42012-08-14 18:37:51[diff] [blame]1203 access_hook = arg + 14;
1204 continue;
1205 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1206 if (starts_with(arg, "--timeout=")) {
H. Peter Anvin960decc2005-10-19 21:27:01[diff] [blame]1207 timeout = atoi(arg+10);
Andreas Ericssona8883282005-11-16 23:38:29[diff] [blame]1208 continue;
H. Peter Anvin960decc2005-10-19 21:27:01[diff] [blame]1209 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1210 if (starts_with(arg, "--init-timeout=")) {
H. Peter Anvin960decc2005-10-19 21:27:01[diff] [blame]1211 init_timeout = atoi(arg+15);
Andreas Ericssona8883282005-11-16 23:38:29[diff] [blame]1212 continue;
H. Peter Anvin960decc2005-10-19 21:27:01[diff] [blame]1213 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1214 if (starts_with(arg, "--max-connections=")) {
Stephen R. van den Berg3bd62c22008-08-14 18:02:20[diff] [blame]1215 max_connections = atoi(arg+18);
1216 if (max_connections < 0)
1217 max_connections = 0; /* unlimited */
1218 continue;
1219 }
Andreas Ericsson4dbd1352005-11-17 19:37:14[diff] [blame]1220 if (!strcmp(arg, "--strict-paths")) {
1221 strict_paths = 1;
1222 continue;
1223 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1224 if (starts_with(arg, "--base-path=")) {
Petr Baudisb21c31c2005-12-23 01:27:40[diff] [blame]1225 base_path = arg+12;
1226 continue;
1227 }
Jens Axboe73a7a652007-07-27 21:00:29[diff] [blame]1228 if (!strcmp(arg, "--base-path-relaxed")) {
1229 base_path_relaxed = 1;
1230 continue;
1231 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1232 if (starts_with(arg, "--interpolated-path=")) {
Jon Loeliger49ba83f2006-09-20 01:31:51[diff] [blame]1233 interpolated_path = arg+20;
1234 continue;
1235 }
Mark Wooding1955fab2006-02-03 20:27:04[diff] [blame]1236 if (!strcmp(arg, "--reuseaddr")) {
1237 reuseaddr = 1;
1238 continue;
1239 }
Junio C Hamano603968d2006-02-05 06:27:29[diff] [blame]1240 if (!strcmp(arg, "--user-path")) {
1241 user_path = "";
1242 continue;
1243 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1244 if (starts_with(arg, "--user-path=")) {
Junio C Hamano603968d2006-02-05 06:27:29[diff] [blame]1245 user_path = arg + 12;
1246 continue;
1247 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1248 if (starts_with(arg, "--pid-file=")) {
Matthias Lederhofer45ed5d72006-07-13 10:18:08[diff] [blame]1249 pid_file = arg + 11;
1250 continue;
1251 }
Matthias Lederhofera5262762006-07-13 16:47:13[diff] [blame]1252 if (!strcmp(arg, "--detach")) {
1253 detach = 1;
1254 log_syslog = 1;
1255 continue;
1256 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1257 if (starts_with(arg, "--user=")) {
Tilman Sauerbeck678dac62006-08-22 17:37:41[diff] [blame]1258 user_name = arg + 7;
1259 continue;
1260 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1261 if (starts_with(arg, "--group=")) {
Tilman Sauerbeck678dac62006-08-22 17:37:41[diff] [blame]1262 group_name = arg + 8;
1263 continue;
1264 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1265 if (starts_with(arg, "--enable=")) {
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]1266 enable_service(arg + 9, 1);
1267 continue;
1268 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1269 if (starts_with(arg, "--disable=")) {
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]1270 enable_service(arg + 10, 0);
1271 continue;
1272 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1273 if (starts_with(arg, "--allow-override=")) {
Junio C Hamano74c0cc22006-08-21 02:03:50[diff] [blame]1274 make_service_overridable(arg + 17, 1);
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]1275 continue;
1276 }
Christian Couder59556542013-11-30 20:55:40[diff] [blame]1277 if (starts_with(arg, "--forbid-override=")) {
Junio C Hamano74c0cc22006-08-21 02:03:50[diff] [blame]1278 make_service_overridable(arg + 18, 0);
Junio C Hamanod819e4e2006-08-21 02:03:13[diff] [blame]1279 continue;
1280 }
Nguyễn Thái Ngọc Duy82246b72013-12-20 10:53:52[diff] [blame]1281 if (!strcmp(arg, "--informative-errors")) {
Jeff Kingd5570f42011-10-14 21:19:21[diff] [blame]1282 informative_errors = 1;
1283 continue;
1284 }
Nguyễn Thái Ngọc Duy82246b72013-12-20 10:53:52[diff] [blame]1285 if (!strcmp(arg, "--no-informative-errors")) {
Jeff Kingd5570f42011-10-14 21:19:21[diff] [blame]1286 informative_errors = 0;
1287 continue;
1288 }
H. Peter Anvin4ae95682005-09-27 02:10:55[diff] [blame]1289 if (!strcmp(arg, "--")) {
1290 ok_paths = &argv[i+1];
1291 break;
1292 } else if (arg[0] != '-') {
1293 ok_paths = &argv[i];
1294 break;
1295 }
Linus Torvaldse64e1b72005-07-15 16:32:16[diff] [blame]1296
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]1297 usage(daemon_usage);
1298 }
1299
Johannes Sixt22665bb2008-02-25 13:25:20[diff] [blame]1300 if (log_syslog) {
Stephen R. van den Berg6a992e92008-08-14 18:02:20[diff] [blame]1301 openlog("git-daemon", LOG_PID, LOG_DAEMON);
Johannes Sixt22665bb2008-02-25 13:25:20[diff] [blame]1302 set_die_routine(daemon_die);
Junio C Hamano460c2012008-08-24 20:27:10[diff] [blame]1303 } else
Junio C Hamano48196af2008-09-04 03:33:29[diff] [blame]1304 /* avoid splitting a message in the middle */
Erik Faye-Lund48cfaea2010-11-04 01:35:17[diff] [blame]1305 setvbuf(stderr, NULL, _IOFBF, 4096);
Johannes Sixt22665bb2008-02-25 13:25:20[diff] [blame]1306
Erik Faye-Lund9cddf562010-11-04 01:35:23[diff] [blame]1307 if (inetd_mode && (detach || group_name || user_name))
1308 die("--detach, --user and --group are incompatible with --inetd");
Tilman Sauerbeck678dac62006-08-22 17:37:41[diff] [blame]1309
Alexander Sulfrian3a3a29c2010-08-30 11:30:51[diff] [blame]1310 if (inetd_mode && (listen_port || (listen_addr.nr > 0)))
Jon Loeligerdd467622006-09-26 14:47:43[diff] [blame]1311 die("--listen= and --port= are incompatible with --inetd");
1312 else if (listen_port == 0)
1313 listen_port = DEFAULT_GIT_PORT;
1314
Tilman Sauerbeck678dac62006-08-22 17:37:41[diff] [blame]1315 if (group_name && !user_name)
1316 die("--group supplied without --user");
1317
Erik Faye-Lunda666b472010-11-04 01:35:24[diff] [blame]1318 if (user_name)
1319 cred = prepare_credentials(user_name, group_name);
Tilman Sauerbeck678dac62006-08-22 17:37:41[diff] [blame]1320
Matthias Lederhoferad8b4f52006-07-13 10:02:29[diff] [blame]1321 if (strict_paths && (!ok_paths || !*ok_paths))
1322 die("option --strict-paths requires a whitelist");
1323
Junio C Hamano90b4a712008-09-09 08:27:07[diff] [blame]1324 if (base_path && !is_directory(base_path))
1325 die("base-path '%s' does not exist or is not a directory",
1326 base_path);
Johannes Sixt20632072008-02-26 12:00:55[diff] [blame]1327
lars.doelle@on-line.de7c3693f2005-09-08 01:50:01[diff] [blame]1328 if (inetd_mode) {
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]1329 if (!freopen("/dev/null", "w", stderr))
1330 die_errno("failed to redirect stderr to /dev/null");
1331 }
1332
Erik Faye-Lundf9c87be2010-11-04 01:35:19[diff] [blame]1333 if (inetd_mode || serve_mode)
1334 return execute();
Andreas Ericssonbce82302005-11-14 16:41:01[diff] [blame]1335
Clemens Buchacherf6a34cf2012-01-07 11:42:46[diff] [blame]1336 if (detach)
Matthias Lederhofera5262762006-07-13 16:47:13[diff] [blame]1337 daemonize();
Matthias Lederhofera5262762006-07-13 16:47:13[diff] [blame]1338 else
1339 sanitize_stdfds();
Matthias Lederhofer258e93a2006-07-13 16:32:11[diff] [blame]1340
Matthias Lederhofer45ed5d72006-07-13 10:18:08[diff] [blame]1341 if (pid_file)
1342 store_pid(pid_file);
1343
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]1344 /* prepare argv for serving-processes */
1345 cld_argv = xmalloc(sizeof (char *) * (argc + 2));
Jonathan Nieder081f84e2011-01-04 04:04:46[diff] [blame]1346 cld_argv[0] = argv[0]; /* git-daemon */
1347 cld_argv[1] = "--serve";
1348 for (i = 1; i < argc; ++i)
1349 cld_argv[i+1] = argv[i];
Erik Faye-Lund30e15602010-11-04 01:35:16[diff] [blame]1350 cld_argv[argc+1] = NULL;
1351
Erik Faye-Lunda666b472010-11-04 01:35:24[diff] [blame]1352 return serve(&listen_addr, listen_port, cred);
Linus Torvaldsa87e8be2005-07-14 02:45:26[diff] [blame]1353}