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