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Commit | Line | Data |
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979e32fa | 1 | #include "cache.h" |
85023577 | 2 | #include "pkt-line.h" |
77cb17e9 | 3 | #include "exec_cmd.h" |
5d87dd4f JS |
4 | #include "run-command.h" |
5 | #include "strbuf.h" | |
3a3a29c1 | 6 | #include "string-list.h" |
f8ff0c06 | 7 | |
695dffe2 JS |
8 | #ifndef HOST_NAME_MAX |
9 | #define HOST_NAME_MAX 256 | |
10 | #endif | |
11 | ||
415e7b87 PW |
12 | #ifndef NI_MAXSERV |
13 | #define NI_MAXSERV 32 | |
14 | #endif | |
15 | ||
2844923d MD |
16 | #ifdef NO_INITGROUPS |
17 | #define initgroups(x, y) (0) /* nothing */ | |
18 | #endif | |
19 | ||
9048fe1c | 20 | static int log_syslog; |
f8ff0c06 | 21 | static int verbose; |
1955fabf | 22 | static int reuseaddr; |
f8ff0c06 | 23 | |
960deccb | 24 | static const char daemon_usage[] = |
1b1dd23f | 25 | "git daemon [--verbose] [--syslog] [--export-all]\n" |
62b4698e ŠN |
26 | " [--timeout=<n>] [--init-timeout=<n>] [--max-connections=<n>]\n" |
27 | " [--strict-paths] [--base-path=<path>] [--base-path-relaxed]\n" | |
28 | " [--user-path | --user-path=<path>]\n" | |
29 | " [--interpolated-path=<path>]\n" | |
9cddf56e | 30 | " [--reuseaddr] [--pid-file=<file>]\n" |
62b4698e ŠN |
31 | " [--(enable|disable|allow-override|forbid-override)=<service>]\n" |
32 | " [--inetd | [--listen=<host_or_ipaddr>] [--port=<n>]\n" | |
9cddf56e | 33 | " [--detach] [--user=<user> [--group=<group>]]\n" |
62b4698e | 34 | " [<directory>...]"; |
4ae95682 PA |
35 | |
36 | /* List of acceptable pathname prefixes */ | |
96f1e58f DR |
37 | static char **ok_paths; |
38 | static int strict_paths; | |
4ae95682 PA |
39 | |
40 | /* If this is set, git-daemon-export-ok is not required */ | |
96f1e58f | 41 | static int export_all_trees; |
f8ff0c06 | 42 | |
b21c31c9 | 43 | /* Take all paths relative to this one if non-NULL */ |
96f1e58f | 44 | static char *base_path; |
49ba83fb | 45 | static char *interpolated_path; |
73a7a656 | 46 | static int base_path_relaxed; |
49ba83fb JL |
47 | |
48 | /* Flag indicating client sent extra args. */ | |
49 | static int saw_extended_args; | |
b21c31c9 | 50 | |
603968d2 JH |
51 | /* If defined, ~user notation is allowed and the string is inserted |
52 | * after ~user/. E.g. a request to git://host/~alice/frotz would | |
53 | * go to /home/alice/pub_git/frotz with --user-path=pub_git. | |
54 | */ | |
96f1e58f | 55 | static const char *user_path; |
603968d2 | 56 | |
960deccb | 57 | /* Timeout, and initial timeout */ |
96f1e58f DR |
58 | static unsigned int timeout; |
59 | static unsigned int init_timeout; | |
f8ff0c06 | 60 | |
9d7ca667 RS |
61 | static char *hostname; |
62 | static char *canon_hostname; | |
63 | static char *ip_address; | |
64 | static char *tcp_port; | |
49ba83fb | 65 | |
9048fe1c | 66 | static void logreport(int priority, const char *err, va_list params) |
f8ff0c06 | 67 | { |
9048fe1c | 68 | if (log_syslog) { |
6a992e9e SB |
69 | char buf[1024]; |
70 | vsnprintf(buf, sizeof(buf), err, params); | |
9048fe1c | 71 | syslog(priority, "%s", buf); |
460c2010 JH |
72 | } else { |
73 | /* | |
48cfaea1 | 74 | * Since stderr is set to buffered mode, the |
6a992e9e | 75 | * logging of different processes will not overlap |
48cfaea1 | 76 | * unless they overflow the (rather big) buffers. |
6a992e9e | 77 | */ |
85e72830 | 78 | fprintf(stderr, "[%"PRIuMAX"] ", (uintmax_t)getpid()); |
6a992e9e SB |
79 | vfprintf(stderr, err, params); |
80 | fputc('\n', stderr); | |
48cfaea1 | 81 | fflush(stderr); |
6a992e9e | 82 | } |
f8ff0c06 PB |
83 | } |
84 | ||
28bea9e5 | 85 | __attribute__((format (printf, 1, 2))) |
cdda4745 | 86 | static void logerror(const char *err, ...) |
f8ff0c06 PB |
87 | { |
88 | va_list params; | |
89 | va_start(params, err); | |
9048fe1c | 90 | logreport(LOG_ERR, err, params); |
f8ff0c06 PB |
91 | va_end(params); |
92 | } | |
93 | ||
28bea9e5 | 94 | __attribute__((format (printf, 1, 2))) |
cdda4745 | 95 | static void loginfo(const char *err, ...) |
f8ff0c06 PB |
96 | { |
97 | va_list params; | |
98 | if (!verbose) | |
99 | return; | |
100 | va_start(params, err); | |
9048fe1c | 101 | logreport(LOG_INFO, err, params); |
f8ff0c06 PB |
102 | va_end(params); |
103 | } | |
a87e8be2 | 104 | |
ad8b4f56 ML |
105 | static void NORETURN daemon_die(const char *err, va_list params) |
106 | { | |
107 | logreport(LOG_ERR, err, params); | |
108 | exit(1); | |
109 | } | |
110 | ||
a47551c3 | 111 | static char *path_ok(char *directory) |
4ae95682 | 112 | { |
603968d2 | 113 | static char rpath[PATH_MAX]; |
49ba83fb | 114 | static char interp_path[PATH_MAX]; |
d79374c7 | 115 | char *path; |
49ba83fb JL |
116 | char *dir; |
117 | ||
9d7ca667 | 118 | dir = directory; |
d79374c7 | 119 | |
34b6cb8b | 120 | if (daemon_avoid_alias(dir)) { |
d79374c7 JH |
121 | logerror("'%s': aliased", dir); |
122 | return NULL; | |
123 | } | |
124 | ||
603968d2 JH |
125 | if (*dir == '~') { |
126 | if (!user_path) { | |
127 | logerror("'%s': User-path not allowed", dir); | |
128 | return NULL; | |
129 | } | |
130 | if (*user_path) { | |
131 | /* Got either "~alice" or "~alice/foo"; | |
132 | * rewrite them to "~alice/%s" or | |
133 | * "~alice/%s/foo". | |
134 | */ | |
135 | int namlen, restlen = strlen(dir); | |
136 | char *slash = strchr(dir, '/'); | |
137 | if (!slash) | |
138 | slash = dir + restlen; | |
139 | namlen = slash - dir; | |
140 | restlen -= namlen; | |
141 | loginfo("userpath <%s>, request <%s>, namlen %d, restlen %d, slash <%s>", user_path, dir, namlen, restlen, slash); | |
142 | snprintf(rpath, PATH_MAX, "%.*s/%s%.*s", | |
143 | namlen, dir, user_path, restlen, slash); | |
144 | dir = rpath; | |
145 | } | |
146 | } | |
49ba83fb | 147 | else if (interpolated_path && saw_extended_args) { |
9d7ca667 | 148 | struct strbuf expanded_path = STRBUF_INIT; |
66dbfd55 GV |
149 | struct strbuf_expand_dict_entry dict[6]; |
150 | ||
151 | dict[0].placeholder = "H"; dict[0].value = hostname; | |
152 | dict[1].placeholder = "CH"; dict[1].value = canon_hostname; | |
153 | dict[2].placeholder = "IP"; dict[2].value = ip_address; | |
154 | dict[3].placeholder = "P"; dict[3].value = tcp_port; | |
155 | dict[4].placeholder = "D"; dict[4].value = directory; | |
156 | dict[5].placeholder = NULL; dict[5].value = NULL; | |
49ba83fb JL |
157 | if (*dir != '/') { |
158 | /* Allow only absolute */ | |
159 | logerror("'%s': Non-absolute path denied (interpolated-path active)", dir); | |
160 | return NULL; | |
161 | } | |
162 | ||
9d7ca667 RS |
163 | strbuf_expand(&expanded_path, interpolated_path, |
164 | strbuf_expand_dict_cb, &dict); | |
165 | strlcpy(interp_path, expanded_path.buf, PATH_MAX); | |
166 | strbuf_release(&expanded_path); | |
49ba83fb JL |
167 | loginfo("Interpolated dir '%s'", interp_path); |
168 | ||
169 | dir = interp_path; | |
170 | } | |
603968d2 JH |
171 | else if (base_path) { |
172 | if (*dir != '/') { | |
173 | /* Allow only absolute */ | |
1fda3d55 | 174 | logerror("'%s': Non-absolute path denied (base-path active)", dir); |
b21c31c9 PB |
175 | return NULL; |
176 | } | |
49ba83fb JL |
177 | snprintf(rpath, PATH_MAX, "%s%s", base_path, dir); |
178 | dir = rpath; | |
b21c31c9 PB |
179 | } |
180 | ||
a583971f RS |
181 | path = enter_repo(dir, strict_paths); |
182 | if (!path && base_path && base_path_relaxed) { | |
73a7a656 JA |
183 | /* |
184 | * if we fail and base_path_relaxed is enabled, try without | |
185 | * prefixing the base path | |
186 | */ | |
a583971f RS |
187 | dir = directory; |
188 | path = enter_repo(dir, strict_paths); | |
189 | } | |
3e04c62d | 190 | |
4dbd1352 | 191 | if (!path) { |
05ac6b34 | 192 | logerror("'%s' does not appear to be a git repository", dir); |
4dbd1352 | 193 | return NULL; |
4ae95682 PA |
194 | } |
195 | ||
196 | if ( ok_paths && *ok_paths ) { | |
ce335fe0 | 197 | char **pp; |
4dbd1352 | 198 | int pathlen = strlen(path); |
4ae95682 | 199 | |
ce335fe0 | 200 | /* The validation is done on the paths after enter_repo |
a6080a0a | 201 | * appends optional {.git,.git/.git} and friends, but |
d79374c7 JH |
202 | * it does not use getcwd(). So if your /pub is |
203 | * a symlink to /mnt/pub, you can whitelist /pub and | |
204 | * do not have to say /mnt/pub. | |
205 | * Do not say /pub/. | |
ce335fe0 | 206 | */ |
4ae95682 PA |
207 | for ( pp = ok_paths ; *pp ; pp++ ) { |
208 | int len = strlen(*pp); | |
ce335fe0 JH |
209 | if (len <= pathlen && |
210 | !memcmp(*pp, path, len) && | |
211 | (path[len] == '\0' || | |
212 | (!strict_paths && path[len] == '/'))) | |
213 | return path; | |
4ae95682 | 214 | } |
4dbd1352 AE |
215 | } |
216 | else { | |
217 | /* be backwards compatible */ | |
218 | if (!strict_paths) | |
219 | return path; | |
4ae95682 PA |
220 | } |
221 | ||
4dbd1352 AE |
222 | logerror("'%s': not in whitelist", path); |
223 | return NULL; /* Fallthrough. Deny by default */ | |
4ae95682 | 224 | } |
a87e8be2 | 225 | |
d819e4e6 JH |
226 | typedef int (*daemon_service_fn)(void); |
227 | struct daemon_service { | |
228 | const char *name; | |
229 | const char *config_name; | |
230 | daemon_service_fn fn; | |
231 | int enabled; | |
232 | int overridable; | |
233 | }; | |
234 | ||
235 | static struct daemon_service *service_looking_at; | |
236 | static int service_enabled; | |
237 | ||
ef90d6d4 | 238 | static int git_daemon_config(const char *var, const char *value, void *cb) |
d819e4e6 | 239 | { |
cc44c765 | 240 | if (!prefixcmp(var, "daemon.") && |
d819e4e6 JH |
241 | !strcmp(var + 7, service_looking_at->config_name)) { |
242 | service_enabled = git_config_bool(var, value); | |
243 | return 0; | |
244 | } | |
245 | ||
246 | /* we are not interested in parsing any other configuration here */ | |
247 | return 0; | |
248 | } | |
249 | ||
a47551c3 | 250 | static int run_service(char *dir, struct daemon_service *service) |
a87e8be2 | 251 | { |
4dbd1352 | 252 | const char *path; |
d819e4e6 JH |
253 | int enabled = service->enabled; |
254 | ||
a47551c3 | 255 | loginfo("Request %s for '%s'", service->name, dir); |
4dbd1352 | 256 | |
d819e4e6 JH |
257 | if (!enabled && !service->overridable) { |
258 | logerror("'%s': service not enabled.", service->name); | |
259 | errno = EACCES; | |
260 | return -1; | |
261 | } | |
4ae95682 | 262 | |
a47551c3 | 263 | if (!(path = path_ok(dir))) |
a87e8be2 | 264 | return -1; |
47888f0f | 265 | |
a87e8be2 LT |
266 | /* |
267 | * Security on the cheap. | |
268 | * | |
a935c397 | 269 | * We want a readable HEAD, usable "objects" directory, and |
a87e8be2 LT |
270 | * a "git-daemon-export-ok" flag that says that the other side |
271 | * is ok with us doing this. | |
4dbd1352 AE |
272 | * |
273 | * path_ok() uses enter_repo() and does whitelist checking. | |
274 | * We only need to make sure the repository is exported. | |
a87e8be2 | 275 | */ |
4dbd1352 | 276 | |
3e04c62d | 277 | if (!export_all_trees && access("git-daemon-export-ok", F_OK)) { |
4dbd1352 | 278 | logerror("'%s': repository not exported.", path); |
3e04c62d PA |
279 | errno = EACCES; |
280 | return -1; | |
281 | } | |
282 | ||
d819e4e6 JH |
283 | if (service->overridable) { |
284 | service_looking_at = service; | |
285 | service_enabled = -1; | |
ef90d6d4 | 286 | git_config(git_daemon_config, NULL); |
d819e4e6 JH |
287 | if (0 <= service_enabled) |
288 | enabled = service_enabled; | |
289 | } | |
290 | if (!enabled) { | |
291 | logerror("'%s': service not enabled for '%s'", | |
292 | service->name, path); | |
293 | errno = EACCES; | |
294 | return -1; | |
295 | } | |
296 | ||
02d57da4 LT |
297 | /* |
298 | * We'll ignore SIGTERM from now on, we have a | |
299 | * good client. | |
300 | */ | |
301 | signal(SIGTERM, SIG_IGN); | |
302 | ||
d819e4e6 JH |
303 | return service->fn(); |
304 | } | |
305 | ||
5d87dd4f JS |
306 | static void copy_to_log(int fd) |
307 | { | |
308 | struct strbuf line = STRBUF_INIT; | |
309 | FILE *fp; | |
310 | ||
311 | fp = fdopen(fd, "r"); | |
312 | if (fp == NULL) { | |
313 | logerror("fdopen of error channel failed"); | |
314 | close(fd); | |
315 | return; | |
316 | } | |
317 | ||
318 | while (strbuf_getline(&line, fp, '\n') != EOF) { | |
319 | logerror("%s", line.buf); | |
320 | strbuf_setlen(&line, 0); | |
321 | } | |
322 | ||
323 | strbuf_release(&line); | |
324 | fclose(fp); | |
325 | } | |
326 | ||
327 | static int run_service_command(const char **argv) | |
328 | { | |
329 | struct child_process cld; | |
330 | ||
331 | memset(&cld, 0, sizeof(cld)); | |
332 | cld.argv = argv; | |
333 | cld.git_cmd = 1; | |
334 | cld.err = -1; | |
335 | if (start_command(&cld)) | |
336 | return -1; | |
337 | ||
338 | close(0); | |
339 | close(1); | |
340 | ||
341 | copy_to_log(cld.err); | |
342 | ||
343 | return finish_command(&cld); | |
344 | } | |
345 | ||
d819e4e6 JH |
346 | static int upload_pack(void) |
347 | { | |
348 | /* Timeout as string */ | |
349 | char timeout_buf[64]; | |
66dbfd55 GV |
350 | const char *argv[] = { "upload-pack", "--strict", NULL, ".", NULL }; |
351 | ||
352 | argv[2] = timeout_buf; | |
d819e4e6 | 353 | |
960deccb | 354 | snprintf(timeout_buf, sizeof timeout_buf, "--timeout=%u", timeout); |
5d87dd4f | 355 | return run_service_command(argv); |
a87e8be2 LT |
356 | } |
357 | ||
39345a21 FBH |
358 | static int upload_archive(void) |
359 | { | |
5d87dd4f JS |
360 | static const char *argv[] = { "upload-archive", ".", NULL }; |
361 | return run_service_command(argv); | |
39345a21 FBH |
362 | } |
363 | ||
4b3b1e1e LT |
364 | static int receive_pack(void) |
365 | { | |
5d87dd4f JS |
366 | static const char *argv[] = { "receive-pack", ".", NULL }; |
367 | return run_service_command(argv); | |
4b3b1e1e LT |
368 | } |
369 | ||
d819e4e6 | 370 | static struct daemon_service daemon_service[] = { |
39345a21 | 371 | { "upload-archive", "uploadarch", upload_archive, 0, 1 }, |
d819e4e6 | 372 | { "upload-pack", "uploadpack", upload_pack, 1, 1 }, |
4b3b1e1e | 373 | { "receive-pack", "receivepack", receive_pack, 0, 1 }, |
d819e4e6 JH |
374 | }; |
375 | ||
f3fa1838 JH |
376 | static void enable_service(const char *name, int ena) |
377 | { | |
d819e4e6 JH |
378 | int i; |
379 | for (i = 0; i < ARRAY_SIZE(daemon_service); i++) { | |
380 | if (!strcmp(daemon_service[i].name, name)) { | |
381 | daemon_service[i].enabled = ena; | |
382 | return; | |
383 | } | |
384 | } | |
385 | die("No such service %s", name); | |
386 | } | |
387 | ||
f3fa1838 JH |
388 | static void make_service_overridable(const char *name, int ena) |
389 | { | |
d819e4e6 JH |
390 | int i; |
391 | for (i = 0; i < ARRAY_SIZE(daemon_service); i++) { | |
392 | if (!strcmp(daemon_service[i].name, name)) { | |
393 | daemon_service[i].overridable = ena; | |
394 | return; | |
395 | } | |
396 | } | |
397 | die("No such service %s", name); | |
398 | } | |
399 | ||
6720e95b RS |
400 | static char *xstrdup_tolower(const char *str) |
401 | { | |
402 | char *p, *dup = xstrdup(str); | |
403 | for (p = dup; *p; p++) | |
404 | *p = tolower(*p); | |
405 | return dup; | |
406 | } | |
407 | ||
e8dbd76d IL |
408 | static void parse_host_and_port(char *hostport, char **host, |
409 | char **port) | |
410 | { | |
411 | if (*hostport == '[') { | |
412 | char *end; | |
413 | ||
414 | end = strchr(hostport, ']'); | |
415 | if (!end) | |
9517e6b8 | 416 | die("Invalid request ('[' without ']')"); |
e8dbd76d IL |
417 | *end = '\0'; |
418 | *host = hostport + 1; | |
419 | if (!end[1]) | |
420 | *port = NULL; | |
421 | else if (end[1] == ':') | |
422 | *port = end + 2; | |
423 | else | |
424 | die("Garbage after end of host part"); | |
425 | } else { | |
426 | *host = hostport; | |
427 | *port = strrchr(hostport, ':'); | |
428 | if (*port) { | |
e9bd3235 | 429 | **port = '\0'; |
e8dbd76d IL |
430 | ++*port; |
431 | } | |
432 | } | |
433 | } | |
434 | ||
eb30aed7 | 435 | /* |
73bb33a9 | 436 | * Read the host as supplied by the client connection. |
eb30aed7 | 437 | */ |
73bb33a9 | 438 | static void parse_host_arg(char *extra_args, int buflen) |
49ba83fb JL |
439 | { |
440 | char *val; | |
441 | int vallen; | |
442 | char *end = extra_args + buflen; | |
443 | ||
73bb33a9 | 444 | if (extra_args < end && *extra_args) { |
49ba83fb JL |
445 | saw_extended_args = 1; |
446 | if (strncasecmp("host=", extra_args, 5) == 0) { | |
447 | val = extra_args + 5; | |
448 | vallen = strlen(val) + 1; | |
449 | if (*val) { | |
eb30aed7 | 450 | /* Split <host>:<port> at colon. */ |
e8dbd76d IL |
451 | char *host; |
452 | char *port; | |
453 | parse_host_and_port(val, &host, &port); | |
dd467629 | 454 | if (port) { |
9d7ca667 RS |
455 | free(tcp_port); |
456 | tcp_port = xstrdup(port); | |
dd467629 | 457 | } |
9d7ca667 | 458 | free(hostname); |
6720e95b | 459 | hostname = xstrdup_tolower(host); |
49ba83fb | 460 | } |
eb30aed7 | 461 | |
49ba83fb JL |
462 | /* On to the next one */ |
463 | extra_args = val + vallen; | |
464 | } | |
73bb33a9 SP |
465 | if (extra_args < end && *extra_args) |
466 | die("Invalid request"); | |
49ba83fb | 467 | } |
dd467629 | 468 | |
dd467629 JL |
469 | /* |
470 | * Locate canonical hostname and its IP address. | |
471 | */ | |
6720e95b | 472 | if (hostname) { |
dd467629 | 473 | #ifndef NO_IPV6 |
dd467629 | 474 | struct addrinfo hints; |
3e8a00ae | 475 | struct addrinfo *ai; |
dd467629 JL |
476 | int gai; |
477 | static char addrbuf[HOST_NAME_MAX + 1]; | |
478 | ||
479 | memset(&hints, 0, sizeof(hints)); | |
480 | hints.ai_flags = AI_CANONNAME; | |
481 | ||
2af202be | 482 | gai = getaddrinfo(hostname, NULL, &hints, &ai); |
dd467629 | 483 | if (!gai) { |
3e8a00ae BK |
484 | struct sockaddr_in *sin_addr = (void *)ai->ai_addr; |
485 | ||
486 | inet_ntop(AF_INET, &sin_addr->sin_addr, | |
487 | addrbuf, sizeof(addrbuf)); | |
488 | free(ip_address); | |
489 | ip_address = xstrdup(addrbuf); | |
490 | ||
491 | free(canon_hostname); | |
492 | canon_hostname = xstrdup(ai->ai_canonname ? | |
493 | ai->ai_canonname : ip_address); | |
494 | ||
495 | freeaddrinfo(ai); | |
dd467629 | 496 | } |
dd467629 | 497 | #else |
dd467629 JL |
498 | struct hostent *hent; |
499 | struct sockaddr_in sa; | |
500 | char **ap; | |
501 | static char addrbuf[HOST_NAME_MAX + 1]; | |
502 | ||
9d7ca667 | 503 | hent = gethostbyname(hostname); |
dd467629 JL |
504 | |
505 | ap = hent->h_addr_list; | |
506 | memset(&sa, 0, sizeof sa); | |
507 | sa.sin_family = hent->h_addrtype; | |
508 | sa.sin_port = htons(0); | |
509 | memcpy(&sa.sin_addr, *ap, hent->h_length); | |
510 | ||
511 | inet_ntop(hent->h_addrtype, &sa.sin_addr, | |
512 | addrbuf, sizeof(addrbuf)); | |
eb30aed7 | 513 | |
9d7ca667 RS |
514 | free(canon_hostname); |
515 | canon_hostname = xstrdup(hent->h_name); | |
516 | free(ip_address); | |
517 | ip_address = xstrdup(addrbuf); | |
dd467629 | 518 | #endif |
6720e95b | 519 | } |
dd467629 JL |
520 | } |
521 | ||
522 | ||
f9c87be6 | 523 | static int execute(void) |
a87e8be2 | 524 | { |
7d80694a | 525 | static char line[1000]; |
d819e4e6 | 526 | int pktlen, len, i; |
f9c87be6 | 527 | char *addr = getenv("REMOTE_ADDR"), *port = getenv("REMOTE_PORT"); |
7d80694a | 528 | |
f9c87be6 EFL |
529 | if (addr) |
530 | loginfo("Connection from %s:%s", addr, port); | |
5b276ee4 | 531 | |
960deccb | 532 | alarm(init_timeout ? init_timeout : timeout); |
5ad312be | 533 | pktlen = packet_read_line(0, line, sizeof(line)); |
960deccb | 534 | alarm(0); |
7d80694a | 535 | |
5ad312be JL |
536 | len = strlen(line); |
537 | if (pktlen != len) | |
538 | loginfo("Extended attributes (%d bytes) exist <%.*s>", | |
539 | (int) pktlen - len, | |
540 | (int) pktlen - len, line + len + 1); | |
83543a24 | 541 | if (len && line[len-1] == '\n') { |
7d80694a | 542 | line[--len] = 0; |
83543a24 JH |
543 | pktlen--; |
544 | } | |
7d80694a | 545 | |
9d7ca667 RS |
546 | free(hostname); |
547 | free(canon_hostname); | |
548 | free(ip_address); | |
549 | free(tcp_port); | |
a47551c3 | 550 | hostname = canon_hostname = ip_address = tcp_port = NULL; |
eb30aed7 | 551 | |
d433ed0b | 552 | if (len != pktlen) |
73bb33a9 | 553 | parse_host_arg(line + len + 1, pktlen - len - 1); |
49ba83fb | 554 | |
d819e4e6 JH |
555 | for (i = 0; i < ARRAY_SIZE(daemon_service); i++) { |
556 | struct daemon_service *s = &(daemon_service[i]); | |
557 | int namelen = strlen(s->name); | |
599065a3 | 558 | if (!prefixcmp(line, "git-") && |
d819e4e6 | 559 | !strncmp(s->name, line + 4, namelen) && |
49ba83fb | 560 | line[namelen + 4] == ' ') { |
eb30aed7 JL |
561 | /* |
562 | * Note: The directory here is probably context sensitive, | |
563 | * and might depend on the actual service being performed. | |
564 | */ | |
a47551c3 | 565 | return run_service(line + namelen + 5, s); |
49ba83fb | 566 | } |
d819e4e6 | 567 | } |
a87e8be2 | 568 | |
f8ff0c06 | 569 | logerror("Protocol error: '%s'", line); |
a87e8be2 LT |
570 | return -1; |
571 | } | |
572 | ||
15515b73 EFL |
573 | static int addrcmp(const struct sockaddr_storage *s1, |
574 | const struct sockaddr_storage *s2) | |
575 | { | |
3aff874a BC |
576 | const struct sockaddr *sa1 = (const struct sockaddr*) s1; |
577 | const struct sockaddr *sa2 = (const struct sockaddr*) s2; | |
578 | ||
579 | if (sa1->sa_family != sa2->sa_family) | |
580 | return sa1->sa_family - sa2->sa_family; | |
581 | if (sa1->sa_family == AF_INET) | |
15515b73 EFL |
582 | return memcmp(&((struct sockaddr_in *)s1)->sin_addr, |
583 | &((struct sockaddr_in *)s2)->sin_addr, | |
584 | sizeof(struct in_addr)); | |
585 | #ifndef NO_IPV6 | |
3aff874a | 586 | if (sa1->sa_family == AF_INET6) |
15515b73 EFL |
587 | return memcmp(&((struct sockaddr_in6 *)s1)->sin6_addr, |
588 | &((struct sockaddr_in6 *)s2)->sin6_addr, | |
589 | sizeof(struct in6_addr)); | |
590 | #endif | |
591 | return 0; | |
592 | } | |
593 | ||
3bd62c21 | 594 | static int max_connections = 32; |
66e631de | 595 | |
3bd62c21 | 596 | static unsigned int live_children; |
66e631de | 597 | |
4d8fa916 | 598 | static struct child { |
3bd62c21 | 599 | struct child *next; |
30e15602 | 600 | struct child_process cld; |
df076bdb | 601 | struct sockaddr_storage address; |
3bd62c21 | 602 | } *firstborn; |
66e631de | 603 | |
c295cf06 | 604 | static void add_child(struct child_process *cld, struct sockaddr *addr, socklen_t addrlen) |
66e631de | 605 | { |
460c2010 JH |
606 | struct child *newborn, **cradle; |
607 | ||
460c2010 JH |
608 | newborn = xcalloc(1, sizeof(*newborn)); |
609 | live_children++; | |
30e15602 | 610 | memcpy(&newborn->cld, cld, sizeof(*cld)); |
460c2010 JH |
611 | memcpy(&newborn->address, addr, addrlen); |
612 | for (cradle = &firstborn; *cradle; cradle = &(*cradle)->next) | |
15515b73 | 613 | if (!addrcmp(&(*cradle)->address, &newborn->address)) |
460c2010 JH |
614 | break; |
615 | newborn->next = *cradle; | |
616 | *cradle = newborn; | |
66e631de LT |
617 | } |
618 | ||
66e631de LT |
619 | /* |
620 | * This gets called if the number of connections grows | |
621 | * past "max_connections". | |
622 | * | |
3bd62c21 | 623 | * We kill the newest connection from a duplicate IP. |
66e631de | 624 | */ |
3bd62c21 | 625 | static void kill_some_child(void) |
66e631de | 626 | { |
460c2010 | 627 | const struct child *blanket, *next; |
66e631de | 628 | |
460c2010 JH |
629 | if (!(blanket = firstborn)) |
630 | return; | |
695605b5 | 631 | |
460c2010 | 632 | for (; (next = blanket->next); blanket = next) |
15515b73 | 633 | if (!addrcmp(&blanket->address, &next->address)) { |
30e15602 | 634 | kill(blanket->cld.pid, SIGTERM); |
460c2010 JH |
635 | break; |
636 | } | |
a5a9126b JS |
637 | } |
638 | ||
3bd62c21 | 639 | static void check_dead_children(void) |
a87e8be2 | 640 | { |
3bd62c21 SB |
641 | int status; |
642 | pid_t pid; | |
02d57da4 | 643 | |
30e15602 EFL |
644 | struct child **cradle, *blanket; |
645 | for (cradle = &firstborn; (blanket = *cradle);) | |
646 | if ((pid = waitpid(blanket->cld.pid, &status, WNOHANG)) > 1) { | |
647 | const char *dead = ""; | |
648 | if (status) | |
649 | dead = " (with error)"; | |
650 | loginfo("[%"PRIuMAX"] Disconnected%s", (uintmax_t)pid, dead); | |
651 | ||
652 | /* remove the child */ | |
653 | *cradle = blanket->next; | |
654 | live_children--; | |
655 | free(blanket); | |
656 | } else | |
657 | cradle = &blanket->next; | |
02d57da4 LT |
658 | } |
659 | ||
30e15602 | 660 | static char **cld_argv; |
c295cf06 | 661 | static void handle(int incoming, struct sockaddr *addr, socklen_t addrlen) |
02d57da4 | 662 | { |
c2e86add | 663 | struct child_process cld = { NULL }; |
f9c87be6 EFL |
664 | char addrbuf[300] = "REMOTE_ADDR=", portbuf[300]; |
665 | char *env[] = { addrbuf, portbuf, NULL }; | |
02d57da4 | 666 | |
3bd62c21 SB |
667 | if (max_connections && live_children >= max_connections) { |
668 | kill_some_child(); | |
460c2010 | 669 | sleep(1); /* give it some time to die */ |
3bd62c21 SB |
670 | check_dead_children(); |
671 | if (live_children >= max_connections) { | |
672 | close(incoming); | |
673 | logerror("Too many children, dropping connection"); | |
674 | return; | |
675 | } | |
676 | } | |
02d57da4 | 677 | |
f9c87be6 EFL |
678 | if (addr->sa_family == AF_INET) { |
679 | struct sockaddr_in *sin_addr = (void *) addr; | |
680 | inet_ntop(addr->sa_family, &sin_addr->sin_addr, addrbuf + 12, | |
681 | sizeof(addrbuf) - 12); | |
682 | snprintf(portbuf, sizeof(portbuf), "REMOTE_PORT=%d", | |
683 | ntohs(sin_addr->sin_port)); | |
684 | #ifndef NO_IPV6 | |
685 | } else if (addr && addr->sa_family == AF_INET6) { | |
686 | struct sockaddr_in6 *sin6_addr = (void *) addr; | |
687 | ||
688 | char *buf = addrbuf + 12; | |
689 | *buf++ = '['; *buf = '\0'; /* stpcpy() is cool */ | |
690 | inet_ntop(AF_INET6, &sin6_addr->sin6_addr, buf, | |
691 | sizeof(addrbuf) - 13); | |
692 | strcat(buf, "]"); | |
693 | ||
694 | snprintf(portbuf, sizeof(portbuf), "REMOTE_PORT=%d", | |
695 | ntohs(sin6_addr->sin6_port)); | |
696 | #endif | |
697 | } | |
698 | ||
699 | cld.env = (const char **)env; | |
30e15602 EFL |
700 | cld.argv = (const char **)cld_argv; |
701 | cld.in = incoming; | |
702 | cld.out = dup(incoming); | |
a87e8be2 | 703 | |
30e15602 EFL |
704 | if (start_command(&cld)) |
705 | logerror("unable to fork"); | |
706 | else | |
707 | add_child(&cld, addr, addrlen); | |
a87e8be2 | 708 | close(incoming); |
a87e8be2 LT |
709 | } |
710 | ||
eaa94919 LT |
711 | static void child_handler(int signo) |
712 | { | |
460c2010 JH |
713 | /* |
714 | * Otherwise empty handler because systemcalls will get interrupted | |
695605b5 SB |
715 | * upon signal receipt |
716 | * SysV needs the handler to be rearmed | |
717 | */ | |
bd7b371e | 718 | signal(SIGCHLD, child_handler); |
eaa94919 LT |
719 | } |
720 | ||
1955fabf MW |
721 | static int set_reuse_addr(int sockfd) |
722 | { | |
723 | int on = 1; | |
724 | ||
725 | if (!reuseaddr) | |
726 | return 0; | |
727 | return setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, | |
728 | &on, sizeof(on)); | |
729 | } | |
730 | ||
2caa3215 AS |
731 | struct socketlist { |
732 | int *list; | |
733 | size_t nr; | |
734 | size_t alloc; | |
735 | }; | |
736 | ||
6573faff PA |
737 | #ifndef NO_IPV6 |
738 | ||
2caa3215 | 739 | static int setup_named_sock(char *listen_addr, int listen_port, struct socketlist *socklist) |
a87e8be2 | 740 | { |
2caa3215 | 741 | int socknum = 0; |
df076bdb | 742 | int maxfd = -1; |
df076bdb | 743 | char pbuf[NI_MAXSERV]; |
6573faff PA |
744 | struct addrinfo hints, *ai0, *ai; |
745 | int gai; | |
20276889 | 746 | long flags; |
df076bdb | 747 | |
dd467629 | 748 | sprintf(pbuf, "%d", listen_port); |
df076bdb YH |
749 | memset(&hints, 0, sizeof(hints)); |
750 | hints.ai_family = AF_UNSPEC; | |
751 | hints.ai_socktype = SOCK_STREAM; | |
752 | hints.ai_protocol = IPPROTO_TCP; | |
753 | hints.ai_flags = AI_PASSIVE; | |
754 | ||
dd467629 | 755 | gai = getaddrinfo(listen_addr, pbuf, &hints, &ai0); |
2caa3215 AS |
756 | if (gai) { |
757 | logerror("getaddrinfo() for %s failed: %s", listen_addr, gai_strerror(gai)); | |
758 | return 0; | |
759 | } | |
df076bdb | 760 | |
df076bdb YH |
761 | for (ai = ai0; ai; ai = ai->ai_next) { |
762 | int sockfd; | |
df076bdb YH |
763 | |
764 | sockfd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); | |
765 | if (sockfd < 0) | |
766 | continue; | |
767 | if (sockfd >= FD_SETSIZE) { | |
df0daf8a | 768 | logerror("Socket descriptor too large"); |
df076bdb YH |
769 | close(sockfd); |
770 | continue; | |
771 | } | |
772 | ||
773 | #ifdef IPV6_V6ONLY | |
774 | if (ai->ai_family == AF_INET6) { | |
775 | int on = 1; | |
776 | setsockopt(sockfd, IPPROTO_IPV6, IPV6_V6ONLY, | |
777 | &on, sizeof(on)); | |
778 | /* Note: error is not fatal */ | |
779 | } | |
780 | #endif | |
781 | ||
1955fabf MW |
782 | if (set_reuse_addr(sockfd)) { |
783 | close(sockfd); | |
0032d548 | 784 | continue; |
1955fabf MW |
785 | } |
786 | ||
df076bdb YH |
787 | if (bind(sockfd, ai->ai_addr, ai->ai_addrlen) < 0) { |
788 | close(sockfd); | |
789 | continue; /* not fatal */ | |
790 | } | |
791 | if (listen(sockfd, 5) < 0) { | |
792 | close(sockfd); | |
793 | continue; /* not fatal */ | |
794 | } | |
795 | ||
20276889 AJ |
796 | flags = fcntl(sockfd, F_GETFD, 0); |
797 | if (flags >= 0) | |
798 | fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC); | |
799 | ||
2caa3215 AS |
800 | ALLOC_GROW(socklist->list, socklist->nr + 1, socklist->alloc); |
801 | socklist->list[socklist->nr++] = sockfd; | |
802 | socknum++; | |
df076bdb | 803 | |
df076bdb YH |
804 | if (maxfd < sockfd) |
805 | maxfd = sockfd; | |
806 | } | |
807 | ||
808 | freeaddrinfo(ai0); | |
809 | ||
6573faff PA |
810 | return socknum; |
811 | } | |
812 | ||
813 | #else /* NO_IPV6 */ | |
814 | ||
2caa3215 | 815 | static int setup_named_sock(char *listen_addr, int listen_port, struct socketlist *socklist) |
6573faff PA |
816 | { |
817 | struct sockaddr_in sin; | |
818 | int sockfd; | |
20276889 | 819 | long flags; |
6573faff | 820 | |
dd467629 JL |
821 | memset(&sin, 0, sizeof sin); |
822 | sin.sin_family = AF_INET; | |
823 | sin.sin_port = htons(listen_port); | |
824 | ||
825 | if (listen_addr) { | |
826 | /* Well, host better be an IP address here. */ | |
827 | if (inet_pton(AF_INET, listen_addr, &sin.sin_addr.s_addr) <= 0) | |
828 | return 0; | |
829 | } else { | |
830 | sin.sin_addr.s_addr = htonl(INADDR_ANY); | |
831 | } | |
832 | ||
6573faff PA |
833 | sockfd = socket(AF_INET, SOCK_STREAM, 0); |
834 | if (sockfd < 0) | |
835 | return 0; | |
836 | ||
1955fabf MW |
837 | if (set_reuse_addr(sockfd)) { |
838 | close(sockfd); | |
839 | return 0; | |
840 | } | |
841 | ||
6573faff PA |
842 | if ( bind(sockfd, (struct sockaddr *)&sin, sizeof sin) < 0 ) { |
843 | close(sockfd); | |
844 | return 0; | |
845 | } | |
a87e8be2 | 846 | |
f35230fb PS |
847 | if (listen(sockfd, 5) < 0) { |
848 | close(sockfd); | |
849 | return 0; | |
850 | } | |
851 | ||
20276889 AJ |
852 | flags = fcntl(sockfd, F_GETFD, 0); |
853 | if (flags >= 0) | |
854 | fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC); | |
855 | ||
2caa3215 AS |
856 | ALLOC_GROW(socklist->list, socklist->nr + 1, socklist->alloc); |
857 | socklist->list[socklist->nr++] = sockfd; | |
f35230fb | 858 | return 1; |
6573faff PA |
859 | } |
860 | ||
861 | #endif | |
862 | ||
3a3a29c1 | 863 | static void socksetup(struct string_list *listen_addr, int listen_port, struct socketlist *socklist) |
2caa3215 | 864 | { |
3a3a29c1 AS |
865 | if (!listen_addr->nr) |
866 | setup_named_sock(NULL, listen_port, socklist); | |
867 | else { | |
868 | int i, socknum; | |
869 | for (i = 0; i < listen_addr->nr; i++) { | |
870 | socknum = setup_named_sock(listen_addr->items[i].string, | |
871 | listen_port, socklist); | |
872 | ||
873 | if (socknum == 0) | |
874 | logerror("unable to allocate any listen sockets for host %s on port %u", | |
875 | listen_addr->items[i].string, listen_port); | |
876 | } | |
877 | } | |
2caa3215 AS |
878 | } |
879 | ||
880 | static int service_loop(struct socketlist *socklist) | |
6573faff PA |
881 | { |
882 | struct pollfd *pfd; | |
883 | int i; | |
884 | ||
2caa3215 | 885 | pfd = xcalloc(socklist->nr, sizeof(struct pollfd)); |
6573faff | 886 | |
2caa3215 AS |
887 | for (i = 0; i < socklist->nr; i++) { |
888 | pfd[i].fd = socklist->list[i]; | |
6573faff PA |
889 | pfd[i].events = POLLIN; |
890 | } | |
9220282a PA |
891 | |
892 | signal(SIGCHLD, child_handler); | |
a87e8be2 LT |
893 | |
894 | for (;;) { | |
df076bdb | 895 | int i; |
6573faff | 896 | |
695605b5 SB |
897 | check_dead_children(); |
898 | ||
2caa3215 | 899 | if (poll(pfd, socklist->nr, -1) < 0) { |
1eef0b33 | 900 | if (errno != EINTR) { |
df0daf8a | 901 | logerror("Poll failed, resuming: %s", |
1eef0b33 JH |
902 | strerror(errno)); |
903 | sleep(1); | |
904 | } | |
df076bdb YH |
905 | continue; |
906 | } | |
907 | ||
2caa3215 | 908 | for (i = 0; i < socklist->nr; i++) { |
6573faff | 909 | if (pfd[i].revents & POLLIN) { |
f9c87be6 EFL |
910 | union { |
911 | struct sockaddr sa; | |
912 | struct sockaddr_in sai; | |
913 | #ifndef NO_IPV6 | |
914 | struct sockaddr_in6 sai6; | |
915 | #endif | |
916 | } ss; | |
c295cf06 | 917 | socklen_t sslen = sizeof(ss); |
f9c87be6 | 918 | int incoming = accept(pfd[i].fd, &ss.sa, &sslen); |
df076bdb YH |
919 | if (incoming < 0) { |
920 | switch (errno) { | |
921 | case EAGAIN: | |
922 | case EINTR: | |
923 | case ECONNABORTED: | |
924 | continue; | |
925 | default: | |
d824cbba | 926 | die_errno("accept returned"); |
df076bdb YH |
927 | } |
928 | } | |
f9c87be6 | 929 | handle(incoming, &ss.sa, sslen); |
a87e8be2 LT |
930 | } |
931 | } | |
a87e8be2 LT |
932 | } |
933 | } | |
934 | ||
258e93a1 ML |
935 | /* if any standard file descriptor is missing open it to /dev/null */ |
936 | static void sanitize_stdfds(void) | |
937 | { | |
938 | int fd = open("/dev/null", O_RDWR, 0); | |
939 | while (fd != -1 && fd < 2) | |
940 | fd = dup(fd); | |
941 | if (fd == -1) | |
d824cbba | 942 | die_errno("open /dev/null or dup failed"); |
258e93a1 ML |
943 | if (fd > 2) |
944 | close(fd); | |
945 | } | |
946 | ||
a666b472 EFL |
947 | #ifdef NO_POSIX_GOODIES |
948 | ||
949 | struct credentials; | |
950 | ||
951 | static void drop_privileges(struct credentials *cred) | |
952 | { | |
953 | /* nothing */ | |
954 | } | |
955 | ||
956 | static void daemonize(void) | |
957 | { | |
958 | die("--detach not supported on this platform"); | |
959 | } | |
960 | ||
961 | static struct credentials *prepare_credentials(const char *user_name, | |
962 | const char *group_name) | |
963 | { | |
964 | die("--user not supported on this platform"); | |
965 | } | |
966 | ||
967 | #else | |
968 | ||
969 | struct credentials { | |
970 | struct passwd *pass; | |
971 | gid_t gid; | |
972 | }; | |
973 | ||
974 | static void drop_privileges(struct credentials *cred) | |
975 | { | |
976 | if (cred && (initgroups(cred->pass->pw_name, cred->gid) || | |
977 | setgid (cred->gid) || setuid(cred->pass->pw_uid))) | |
978 | die("cannot drop privileges"); | |
979 | } | |
980 | ||
981 | static struct credentials *prepare_credentials(const char *user_name, | |
982 | const char *group_name) | |
983 | { | |
984 | static struct credentials c; | |
985 | ||
986 | c.pass = getpwnam(user_name); | |
987 | if (!c.pass) | |
988 | die("user not found - %s", user_name); | |
989 | ||
990 | if (!group_name) | |
991 | c.gid = c.pass->pw_gid; | |
992 | else { | |
993 | struct group *group = getgrnam(group_name); | |
994 | if (!group) | |
995 | die("group not found - %s", group_name); | |
996 | ||
997 | c.gid = group->gr_gid; | |
998 | } | |
999 | ||
1000 | return &c; | |
1001 | } | |
1002 | ||
a5262768 ML |
1003 | static void daemonize(void) |
1004 | { | |
1005 | switch (fork()) { | |
1006 | case 0: | |
1007 | break; | |
1008 | case -1: | |
d824cbba | 1009 | die_errno("fork failed"); |
a5262768 ML |
1010 | default: |
1011 | exit(0); | |
1012 | } | |
1013 | if (setsid() == -1) | |
d824cbba | 1014 | die_errno("setsid failed"); |
a5262768 ML |
1015 | close(0); |
1016 | close(1); | |
1017 | close(2); | |
1018 | sanitize_stdfds(); | |
1019 | } | |
a666b472 | 1020 | #endif |
a5262768 | 1021 | |
45ed5d7f ML |
1022 | static void store_pid(const char *path) |
1023 | { | |
1024 | FILE *f = fopen(path, "w"); | |
1025 | if (!f) | |
d824cbba | 1026 | die_errno("cannot open pid file '%s'", path); |
85e72830 | 1027 | if (fprintf(f, "%"PRIuMAX"\n", (uintmax_t) getpid()) < 0 || fclose(f) != 0) |
d824cbba | 1028 | die_errno("failed to write pid file '%s'", path); |
45ed5d7f ML |
1029 | } |
1030 | ||
a666b472 EFL |
1031 | static int serve(struct string_list *listen_addr, int listen_port, |
1032 | struct credentials *cred) | |
6573faff | 1033 | { |
2caa3215 | 1034 | struct socketlist socklist = { NULL, 0, 0 }; |
4ae22d96 | 1035 | |
2caa3215 AS |
1036 | socksetup(listen_addr, listen_port, &socklist); |
1037 | if (socklist.nr == 0) | |
3a3a29c1 AS |
1038 | die("unable to allocate any listen sockets on port %u", |
1039 | listen_port); | |
4ae22d96 | 1040 | |
a666b472 | 1041 | drop_privileges(cred); |
678dac6b | 1042 | |
2caa3215 | 1043 | return service_loop(&socklist); |
4ae22d96 | 1044 | } |
6573faff | 1045 | |
a87e8be2 LT |
1046 | int main(int argc, char **argv) |
1047 | { | |
dd467629 | 1048 | int listen_port = 0; |
3a3a29c1 | 1049 | struct string_list listen_addr = STRING_LIST_INIT_NODUP; |
30e15602 | 1050 | int serve_mode = 0, inetd_mode = 0; |
678dac6b | 1051 | const char *pid_file = NULL, *user_name = NULL, *group_name = NULL; |
a5262768 | 1052 | int detach = 0; |
a666b472 | 1053 | struct credentials *cred = NULL; |
a87e8be2 LT |
1054 | int i; |
1055 | ||
2fb3f6db SP |
1056 | git_extract_argv0_path(argv[0]); |
1057 | ||
a87e8be2 LT |
1058 | for (i = 1; i < argc; i++) { |
1059 | char *arg = argv[i]; | |
1060 | ||
cc44c765 | 1061 | if (!prefixcmp(arg, "--listen=")) { |
3a3a29c1 | 1062 | string_list_append(&listen_addr, xstrdup_tolower(arg + 9)); |
6720e95b | 1063 | continue; |
dd467629 | 1064 | } |
cc44c765 | 1065 | if (!prefixcmp(arg, "--port=")) { |
a87e8be2 LT |
1066 | char *end; |
1067 | unsigned long n; | |
1068 | n = strtoul(arg+7, &end, 0); | |
1069 | if (arg[7] && !*end) { | |
dd467629 | 1070 | listen_port = n; |
a87e8be2 LT |
1071 | continue; |
1072 | } | |
1073 | } | |
30e15602 EFL |
1074 | if (!strcmp(arg, "--serve")) { |
1075 | serve_mode = 1; | |
1076 | continue; | |
1077 | } | |
e64e1b79 LT |
1078 | if (!strcmp(arg, "--inetd")) { |
1079 | inetd_mode = 1; | |
a8883288 | 1080 | log_syslog = 1; |
e64e1b79 LT |
1081 | continue; |
1082 | } | |
f8ff0c06 PB |
1083 | if (!strcmp(arg, "--verbose")) { |
1084 | verbose = 1; | |
1085 | continue; | |
1086 | } | |
9048fe1c PB |
1087 | if (!strcmp(arg, "--syslog")) { |
1088 | log_syslog = 1; | |
9048fe1c PB |
1089 | continue; |
1090 | } | |
4ae95682 PA |
1091 | if (!strcmp(arg, "--export-all")) { |
1092 | export_all_trees = 1; | |
1093 | continue; | |
1094 | } | |
cc44c765 | 1095 | if (!prefixcmp(arg, "--timeout=")) { |
960deccb | 1096 | timeout = atoi(arg+10); |
a8883288 | 1097 | continue; |
960deccb | 1098 | } |
cc44c765 | 1099 | if (!prefixcmp(arg, "--init-timeout=")) { |
960deccb | 1100 | init_timeout = atoi(arg+15); |
a8883288 | 1101 | continue; |
960deccb | 1102 | } |
3bd62c21 SB |
1103 | if (!prefixcmp(arg, "--max-connections=")) { |
1104 | max_connections = atoi(arg+18); | |
1105 | if (max_connections < 0) | |
1106 | max_connections = 0; /* unlimited */ | |
1107 | continue; | |
1108 | } | |
4dbd1352 AE |
1109 | if (!strcmp(arg, "--strict-paths")) { |
1110 | strict_paths = 1; | |
1111 | continue; | |
1112 | } | |
cc44c765 | 1113 | if (!prefixcmp(arg, "--base-path=")) { |
b21c31c9 PB |
1114 | base_path = arg+12; |
1115 | continue; | |
1116 | } | |
73a7a656 JA |
1117 | if (!strcmp(arg, "--base-path-relaxed")) { |
1118 | base_path_relaxed = 1; | |
1119 | continue; | |
1120 | } | |
cc44c765 | 1121 | if (!prefixcmp(arg, "--interpolated-path=")) { |
49ba83fb JL |
1122 | interpolated_path = arg+20; |
1123 | continue; | |
1124 | } | |
1955fabf MW |
1125 | if (!strcmp(arg, "--reuseaddr")) { |
1126 | reuseaddr = 1; | |
1127 | continue; | |
1128 | } | |
603968d2 JH |
1129 | if (!strcmp(arg, "--user-path")) { |
1130 | user_path = ""; | |
1131 | continue; | |
1132 | } | |
cc44c765 | 1133 | if (!prefixcmp(arg, "--user-path=")) { |
603968d2 JH |
1134 | user_path = arg + 12; |
1135 | continue; | |
1136 | } | |
cc44c765 | 1137 | if (!prefixcmp(arg, "--pid-file=")) { |
45ed5d7f ML |
1138 | pid_file = arg + 11; |
1139 | continue; | |
1140 | } | |
a5262768 ML |
1141 | if (!strcmp(arg, "--detach")) { |
1142 | detach = 1; | |
1143 | log_syslog = 1; | |
1144 | continue; | |
1145 | } | |
cc44c765 | 1146 | if (!prefixcmp(arg, "--user=")) { |
678dac6b TS |
1147 | user_name = arg + 7; |
1148 | continue; | |
1149 | } | |
cc44c765 | 1150 | if (!prefixcmp(arg, "--group=")) { |
678dac6b TS |
1151 | group_name = arg + 8; |
1152 | continue; | |
1153 | } | |
cc44c765 | 1154 | if (!prefixcmp(arg, "--enable=")) { |
d819e4e6 JH |
1155 | enable_service(arg + 9, 1); |
1156 | continue; | |
1157 | } | |
cc44c765 | 1158 | if (!prefixcmp(arg, "--disable=")) { |
d819e4e6 JH |
1159 | enable_service(arg + 10, 0); |
1160 | continue; | |
1161 | } | |
cc44c765 | 1162 | if (!prefixcmp(arg, "--allow-override=")) { |
74c0cc21 | 1163 | make_service_overridable(arg + 17, 1); |
d819e4e6 JH |
1164 | continue; |
1165 | } | |
cc44c765 | 1166 | if (!prefixcmp(arg, "--forbid-override=")) { |
74c0cc21 | 1167 | make_service_overridable(arg + 18, 0); |
d819e4e6 JH |
1168 | continue; |
1169 | } | |
4ae95682 PA |
1170 | if (!strcmp(arg, "--")) { |
1171 | ok_paths = &argv[i+1]; | |
1172 | break; | |
1173 | } else if (arg[0] != '-') { | |
1174 | ok_paths = &argv[i]; | |
1175 | break; | |
1176 | } | |
e64e1b79 | 1177 | |
a87e8be2 LT |
1178 | usage(daemon_usage); |
1179 | } | |
1180 | ||
22665bba | 1181 | if (log_syslog) { |
6a992e9e | 1182 | openlog("git-daemon", LOG_PID, LOG_DAEMON); |
22665bba | 1183 | set_die_routine(daemon_die); |
460c2010 | 1184 | } else |
48196afd | 1185 | /* avoid splitting a message in the middle */ |
48cfaea1 | 1186 | setvbuf(stderr, NULL, _IOFBF, 4096); |
22665bba | 1187 | |
9cddf56e EFL |
1188 | if (inetd_mode && (detach || group_name || user_name)) |
1189 | die("--detach, --user and --group are incompatible with --inetd"); | |
678dac6b | 1190 | |
3a3a29c1 | 1191 | if (inetd_mode && (listen_port || (listen_addr.nr > 0))) |
dd467629 JL |
1192 | die("--listen= and --port= are incompatible with --inetd"); |
1193 | else if (listen_port == 0) | |
1194 | listen_port = DEFAULT_GIT_PORT; | |
1195 | ||
678dac6b TS |
1196 | if (group_name && !user_name) |
1197 | die("--group supplied without --user"); | |
1198 | ||
a666b472 EFL |
1199 | if (user_name) |
1200 | cred = prepare_credentials(user_name, group_name); | |
678dac6b | 1201 | |
ad8b4f56 ML |
1202 | if (strict_paths && (!ok_paths || !*ok_paths)) |
1203 | die("option --strict-paths requires a whitelist"); | |
1204 | ||
90b4a71c JH |
1205 | if (base_path && !is_directory(base_path)) |
1206 | die("base-path '%s' does not exist or is not a directory", | |
1207 | base_path); | |
20632071 | 1208 | |
7c3693f1 | 1209 | if (inetd_mode) { |
30e15602 EFL |
1210 | if (!freopen("/dev/null", "w", stderr)) |
1211 | die_errno("failed to redirect stderr to /dev/null"); | |
1212 | } | |
1213 | ||
f9c87be6 EFL |
1214 | if (inetd_mode || serve_mode) |
1215 | return execute(); | |
bce8230d | 1216 | |
6a992e9e | 1217 | if (detach) { |
a5262768 | 1218 | daemonize(); |
6a992e9e SB |
1219 | loginfo("Ready to rumble"); |
1220 | } | |
a5262768 ML |
1221 | else |
1222 | sanitize_stdfds(); | |
258e93a1 | 1223 | |
45ed5d7f ML |
1224 | if (pid_file) |
1225 | store_pid(pid_file); | |
1226 | ||
30e15602 EFL |
1227 | /* prepare argv for serving-processes */ |
1228 | cld_argv = xmalloc(sizeof (char *) * (argc + 2)); | |
081f84ee JN |
1229 | cld_argv[0] = argv[0]; /* git-daemon */ |
1230 | cld_argv[1] = "--serve"; | |
1231 | for (i = 1; i < argc; ++i) | |
1232 | cld_argv[i+1] = argv[i]; | |
30e15602 EFL |
1233 | cld_argv[argc+1] = NULL; |
1234 | ||
a666b472 | 1235 | return serve(&listen_addr, listen_port, cred); |
a87e8be2 | 1236 | } |