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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" |
49ba83fb | 4 | #include "interpolate.h" |
f8ff0c06 | 5 | |
85023577 JH |
6 | #include <syslog.h> |
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 | ||
9048fe1c | 16 | static int log_syslog; |
f8ff0c06 | 17 | static int verbose; |
1955fabf | 18 | static int reuseaddr; |
f8ff0c06 | 19 | |
960deccb | 20 | static const char daemon_usage[] = |
1b1dd23f | 21 | "git daemon [--verbose] [--syslog] [--export-all]\n" |
3bd62c21 SB |
22 | " [--timeout=n] [--init-timeout=n] [--max-connections=n]\n" |
23 | " [--strict-paths] [--base-path=path] [--base-path-relaxed]\n" | |
73a7a656 | 24 | " [--user-path | --user-path=path]\n" |
49ba83fb | 25 | " [--interpolated-path=path]\n" |
678dac6b | 26 | " [--reuseaddr] [--detach] [--pid-file=file]\n" |
d9edcbd6 | 27 | " [--[enable|disable|allow-override|forbid-override]=service]\n" |
dd467629 JL |
28 | " [--inetd | [--listen=host_or_ipaddr] [--port=n]\n" |
29 | " [--user=user [--group=group]]\n" | |
30 | " [directory...]"; | |
4ae95682 PA |
31 | |
32 | /* List of acceptable pathname prefixes */ | |
96f1e58f DR |
33 | static char **ok_paths; |
34 | static int strict_paths; | |
4ae95682 PA |
35 | |
36 | /* If this is set, git-daemon-export-ok is not required */ | |
96f1e58f | 37 | static int export_all_trees; |
f8ff0c06 | 38 | |
b21c31c9 | 39 | /* Take all paths relative to this one if non-NULL */ |
96f1e58f | 40 | static char *base_path; |
49ba83fb | 41 | static char *interpolated_path; |
73a7a656 | 42 | static int base_path_relaxed; |
49ba83fb JL |
43 | |
44 | /* Flag indicating client sent extra args. */ | |
45 | static int saw_extended_args; | |
b21c31c9 | 46 | |
603968d2 JH |
47 | /* If defined, ~user notation is allowed and the string is inserted |
48 | * after ~user/. E.g. a request to git://host/~alice/frotz would | |
49 | * go to /home/alice/pub_git/frotz with --user-path=pub_git. | |
50 | */ | |
96f1e58f | 51 | static const char *user_path; |
603968d2 | 52 | |
960deccb | 53 | /* Timeout, and initial timeout */ |
96f1e58f DR |
54 | static unsigned int timeout; |
55 | static unsigned int init_timeout; | |
f8ff0c06 | 56 | |
49ba83fb JL |
57 | /* |
58 | * Static table for now. Ugh. | |
59 | * Feel free to make dynamic as needed. | |
60 | */ | |
61 | #define INTERP_SLOT_HOST (0) | |
dd467629 JL |
62 | #define INTERP_SLOT_CANON_HOST (1) |
63 | #define INTERP_SLOT_IP (2) | |
64 | #define INTERP_SLOT_PORT (3) | |
65 | #define INTERP_SLOT_DIR (4) | |
66 | #define INTERP_SLOT_PERCENT (5) | |
49ba83fb JL |
67 | |
68 | static struct interp interp_table[] = { | |
69 | { "%H", 0}, | |
dd467629 JL |
70 | { "%CH", 0}, |
71 | { "%IP", 0}, | |
72 | { "%P", 0}, | |
49ba83fb | 73 | { "%D", 0}, |
eb30aed7 | 74 | { "%%", 0}, |
49ba83fb JL |
75 | }; |
76 | ||
77 | ||
9048fe1c | 78 | static void logreport(int priority, const char *err, va_list params) |
f8ff0c06 | 79 | { |
9048fe1c | 80 | if (log_syslog) { |
6a992e9e SB |
81 | char buf[1024]; |
82 | vsnprintf(buf, sizeof(buf), err, params); | |
9048fe1c | 83 | syslog(priority, "%s", buf); |
460c2010 JH |
84 | } else { |
85 | /* | |
86 | * Since stderr is set to linebuffered mode, the | |
6a992e9e SB |
87 | * logging of different processes will not overlap |
88 | */ | |
85e72830 | 89 | fprintf(stderr, "[%"PRIuMAX"] ", (uintmax_t)getpid()); |
6a992e9e SB |
90 | vfprintf(stderr, err, params); |
91 | fputc('\n', stderr); | |
92 | } | |
f8ff0c06 PB |
93 | } |
94 | ||
cdda4745 | 95 | static void logerror(const char *err, ...) |
f8ff0c06 PB |
96 | { |
97 | va_list params; | |
98 | va_start(params, err); | |
9048fe1c | 99 | logreport(LOG_ERR, err, params); |
f8ff0c06 PB |
100 | va_end(params); |
101 | } | |
102 | ||
cdda4745 | 103 | static void loginfo(const char *err, ...) |
f8ff0c06 PB |
104 | { |
105 | va_list params; | |
106 | if (!verbose) | |
107 | return; | |
108 | va_start(params, err); | |
9048fe1c | 109 | logreport(LOG_INFO, err, params); |
f8ff0c06 PB |
110 | va_end(params); |
111 | } | |
a87e8be2 | 112 | |
ad8b4f56 ML |
113 | static void NORETURN daemon_die(const char *err, va_list params) |
114 | { | |
115 | logreport(LOG_ERR, err, params); | |
116 | exit(1); | |
117 | } | |
118 | ||
d79374c7 JH |
119 | static int avoid_alias(char *p) |
120 | { | |
121 | int sl, ndot; | |
122 | ||
a6080a0a | 123 | /* |
d79374c7 JH |
124 | * This resurrects the belts and suspenders paranoia check by HPA |
125 | * done in <435560F7.4080006@zytor.com> thread, now enter_repo() | |
126 | * does not do getcwd() based path canonicalizations. | |
127 | * | |
128 | * sl becomes true immediately after seeing '/' and continues to | |
129 | * be true as long as dots continue after that without intervening | |
130 | * non-dot character. | |
131 | */ | |
132 | if (!p || (*p != '/' && *p != '~')) | |
133 | return -1; | |
134 | sl = 1; ndot = 0; | |
135 | p++; | |
136 | ||
137 | while (1) { | |
138 | char ch = *p++; | |
139 | if (sl) { | |
140 | if (ch == '.') | |
141 | ndot++; | |
142 | else if (ch == '/') { | |
143 | if (ndot < 3) | |
144 | /* reject //, /./ and /../ */ | |
145 | return -1; | |
146 | ndot = 0; | |
147 | } | |
148 | else if (ch == 0) { | |
149 | if (0 < ndot && ndot < 3) | |
150 | /* reject /.$ and /..$ */ | |
151 | return -1; | |
152 | return 0; | |
153 | } | |
154 | else | |
155 | sl = ndot = 0; | |
156 | } | |
157 | else if (ch == 0) | |
158 | return 0; | |
159 | else if (ch == '/') { | |
160 | sl = 1; | |
161 | ndot = 0; | |
162 | } | |
163 | } | |
164 | } | |
165 | ||
49ba83fb | 166 | static char *path_ok(struct interp *itable) |
4ae95682 | 167 | { |
603968d2 | 168 | static char rpath[PATH_MAX]; |
49ba83fb | 169 | static char interp_path[PATH_MAX]; |
73a7a656 | 170 | int retried_path = 0; |
d79374c7 | 171 | char *path; |
49ba83fb JL |
172 | char *dir; |
173 | ||
174 | dir = itable[INTERP_SLOT_DIR].value; | |
d79374c7 JH |
175 | |
176 | if (avoid_alias(dir)) { | |
177 | logerror("'%s': aliased", dir); | |
178 | return NULL; | |
179 | } | |
180 | ||
603968d2 JH |
181 | if (*dir == '~') { |
182 | if (!user_path) { | |
183 | logerror("'%s': User-path not allowed", dir); | |
184 | return NULL; | |
185 | } | |
186 | if (*user_path) { | |
187 | /* Got either "~alice" or "~alice/foo"; | |
188 | * rewrite them to "~alice/%s" or | |
189 | * "~alice/%s/foo". | |
190 | */ | |
191 | int namlen, restlen = strlen(dir); | |
192 | char *slash = strchr(dir, '/'); | |
193 | if (!slash) | |
194 | slash = dir + restlen; | |
195 | namlen = slash - dir; | |
196 | restlen -= namlen; | |
197 | loginfo("userpath <%s>, request <%s>, namlen %d, restlen %d, slash <%s>", user_path, dir, namlen, restlen, slash); | |
198 | snprintf(rpath, PATH_MAX, "%.*s/%s%.*s", | |
199 | namlen, dir, user_path, restlen, slash); | |
200 | dir = rpath; | |
201 | } | |
202 | } | |
49ba83fb JL |
203 | else if (interpolated_path && saw_extended_args) { |
204 | if (*dir != '/') { | |
205 | /* Allow only absolute */ | |
206 | logerror("'%s': Non-absolute path denied (interpolated-path active)", dir); | |
207 | return NULL; | |
208 | } | |
209 | ||
210 | interpolate(interp_path, PATH_MAX, interpolated_path, | |
211 | interp_table, ARRAY_SIZE(interp_table)); | |
212 | loginfo("Interpolated dir '%s'", interp_path); | |
213 | ||
214 | dir = interp_path; | |
215 | } | |
603968d2 JH |
216 | else if (base_path) { |
217 | if (*dir != '/') { | |
218 | /* Allow only absolute */ | |
1fda3d55 | 219 | logerror("'%s': Non-absolute path denied (base-path active)", dir); |
b21c31c9 PB |
220 | return NULL; |
221 | } | |
49ba83fb JL |
222 | snprintf(rpath, PATH_MAX, "%s%s", base_path, dir); |
223 | dir = rpath; | |
b21c31c9 PB |
224 | } |
225 | ||
73a7a656 JA |
226 | do { |
227 | path = enter_repo(dir, strict_paths); | |
228 | if (path) | |
229 | break; | |
230 | ||
231 | /* | |
232 | * if we fail and base_path_relaxed is enabled, try without | |
233 | * prefixing the base path | |
234 | */ | |
235 | if (base_path && base_path_relaxed && !retried_path) { | |
236 | dir = itable[INTERP_SLOT_DIR].value; | |
237 | retried_path = 1; | |
238 | continue; | |
239 | } | |
240 | break; | |
241 | } while (1); | |
3e04c62d | 242 | |
4dbd1352 AE |
243 | if (!path) { |
244 | logerror("'%s': unable to chdir or not a git archive", dir); | |
245 | return NULL; | |
4ae95682 PA |
246 | } |
247 | ||
248 | if ( ok_paths && *ok_paths ) { | |
ce335fe0 | 249 | char **pp; |
4dbd1352 | 250 | int pathlen = strlen(path); |
4ae95682 | 251 | |
ce335fe0 | 252 | /* The validation is done on the paths after enter_repo |
a6080a0a | 253 | * appends optional {.git,.git/.git} and friends, but |
d79374c7 JH |
254 | * it does not use getcwd(). So if your /pub is |
255 | * a symlink to /mnt/pub, you can whitelist /pub and | |
256 | * do not have to say /mnt/pub. | |
257 | * Do not say /pub/. | |
ce335fe0 | 258 | */ |
4ae95682 PA |
259 | for ( pp = ok_paths ; *pp ; pp++ ) { |
260 | int len = strlen(*pp); | |
ce335fe0 JH |
261 | if (len <= pathlen && |
262 | !memcmp(*pp, path, len) && | |
263 | (path[len] == '\0' || | |
264 | (!strict_paths && path[len] == '/'))) | |
265 | return path; | |
4ae95682 | 266 | } |
4dbd1352 AE |
267 | } |
268 | else { | |
269 | /* be backwards compatible */ | |
270 | if (!strict_paths) | |
271 | return path; | |
4ae95682 PA |
272 | } |
273 | ||
4dbd1352 AE |
274 | logerror("'%s': not in whitelist", path); |
275 | return NULL; /* Fallthrough. Deny by default */ | |
4ae95682 | 276 | } |
a87e8be2 | 277 | |
d819e4e6 JH |
278 | typedef int (*daemon_service_fn)(void); |
279 | struct daemon_service { | |
280 | const char *name; | |
281 | const char *config_name; | |
282 | daemon_service_fn fn; | |
283 | int enabled; | |
284 | int overridable; | |
285 | }; | |
286 | ||
287 | static struct daemon_service *service_looking_at; | |
288 | static int service_enabled; | |
289 | ||
ef90d6d4 | 290 | static int git_daemon_config(const char *var, const char *value, void *cb) |
d819e4e6 | 291 | { |
cc44c765 | 292 | if (!prefixcmp(var, "daemon.") && |
d819e4e6 JH |
293 | !strcmp(var + 7, service_looking_at->config_name)) { |
294 | service_enabled = git_config_bool(var, value); | |
295 | return 0; | |
296 | } | |
297 | ||
298 | /* we are not interested in parsing any other configuration here */ | |
299 | return 0; | |
300 | } | |
301 | ||
49ba83fb | 302 | static int run_service(struct interp *itable, struct daemon_service *service) |
a87e8be2 | 303 | { |
4dbd1352 | 304 | const char *path; |
d819e4e6 JH |
305 | int enabled = service->enabled; |
306 | ||
49ba83fb JL |
307 | loginfo("Request %s for '%s'", |
308 | service->name, | |
309 | itable[INTERP_SLOT_DIR].value); | |
4dbd1352 | 310 | |
d819e4e6 JH |
311 | if (!enabled && !service->overridable) { |
312 | logerror("'%s': service not enabled.", service->name); | |
313 | errno = EACCES; | |
314 | return -1; | |
315 | } | |
4ae95682 | 316 | |
49ba83fb | 317 | if (!(path = path_ok(itable))) |
a87e8be2 | 318 | return -1; |
47888f0f | 319 | |
a87e8be2 LT |
320 | /* |
321 | * Security on the cheap. | |
322 | * | |
a935c397 | 323 | * We want a readable HEAD, usable "objects" directory, and |
a87e8be2 LT |
324 | * a "git-daemon-export-ok" flag that says that the other side |
325 | * is ok with us doing this. | |
4dbd1352 AE |
326 | * |
327 | * path_ok() uses enter_repo() and does whitelist checking. | |
328 | * We only need to make sure the repository is exported. | |
a87e8be2 | 329 | */ |
4dbd1352 | 330 | |
3e04c62d | 331 | if (!export_all_trees && access("git-daemon-export-ok", F_OK)) { |
4dbd1352 | 332 | logerror("'%s': repository not exported.", path); |
3e04c62d PA |
333 | errno = EACCES; |
334 | return -1; | |
335 | } | |
336 | ||
d819e4e6 JH |
337 | if (service->overridable) { |
338 | service_looking_at = service; | |
339 | service_enabled = -1; | |
ef90d6d4 | 340 | git_config(git_daemon_config, NULL); |
d819e4e6 JH |
341 | if (0 <= service_enabled) |
342 | enabled = service_enabled; | |
343 | } | |
344 | if (!enabled) { | |
345 | logerror("'%s': service not enabled for '%s'", | |
346 | service->name, path); | |
347 | errno = EACCES; | |
348 | return -1; | |
349 | } | |
350 | ||
02d57da4 LT |
351 | /* |
352 | * We'll ignore SIGTERM from now on, we have a | |
353 | * good client. | |
354 | */ | |
355 | signal(SIGTERM, SIG_IGN); | |
356 | ||
d819e4e6 JH |
357 | return service->fn(); |
358 | } | |
359 | ||
360 | static int upload_pack(void) | |
361 | { | |
362 | /* Timeout as string */ | |
363 | char timeout_buf[64]; | |
364 | ||
960deccb PA |
365 | snprintf(timeout_buf, sizeof timeout_buf, "--timeout=%u", timeout); |
366 | ||
a87e8be2 | 367 | /* git-upload-pack only ever reads stuff, so this is safe */ |
77cb17e9 | 368 | execl_git_cmd("upload-pack", "--strict", timeout_buf, ".", NULL); |
a87e8be2 LT |
369 | return -1; |
370 | } | |
371 | ||
39345a21 FBH |
372 | static int upload_archive(void) |
373 | { | |
374 | execl_git_cmd("upload-archive", ".", NULL); | |
375 | return -1; | |
376 | } | |
377 | ||
4b3b1e1e LT |
378 | static int receive_pack(void) |
379 | { | |
380 | execl_git_cmd("receive-pack", ".", NULL); | |
381 | return -1; | |
382 | } | |
383 | ||
d819e4e6 | 384 | static struct daemon_service daemon_service[] = { |
39345a21 | 385 | { "upload-archive", "uploadarch", upload_archive, 0, 1 }, |
d819e4e6 | 386 | { "upload-pack", "uploadpack", upload_pack, 1, 1 }, |
4b3b1e1e | 387 | { "receive-pack", "receivepack", receive_pack, 0, 1 }, |
d819e4e6 JH |
388 | }; |
389 | ||
f3fa1838 JH |
390 | static void enable_service(const char *name, int ena) |
391 | { | |
d819e4e6 JH |
392 | int i; |
393 | for (i = 0; i < ARRAY_SIZE(daemon_service); i++) { | |
394 | if (!strcmp(daemon_service[i].name, name)) { | |
395 | daemon_service[i].enabled = ena; | |
396 | return; | |
397 | } | |
398 | } | |
399 | die("No such service %s", name); | |
400 | } | |
401 | ||
f3fa1838 JH |
402 | static void make_service_overridable(const char *name, int ena) |
403 | { | |
d819e4e6 JH |
404 | int i; |
405 | for (i = 0; i < ARRAY_SIZE(daemon_service); i++) { | |
406 | if (!strcmp(daemon_service[i].name, name)) { | |
407 | daemon_service[i].overridable = ena; | |
408 | return; | |
409 | } | |
410 | } | |
411 | die("No such service %s", name); | |
412 | } | |
413 | ||
eb30aed7 JL |
414 | /* |
415 | * Separate the "extra args" information as supplied by the client connection. | |
3dff5379 | 416 | * Any resulting data is squirreled away in the given interpolation table. |
eb30aed7 JL |
417 | */ |
418 | static void parse_extra_args(struct interp *table, char *extra_args, int buflen) | |
49ba83fb JL |
419 | { |
420 | char *val; | |
421 | int vallen; | |
422 | char *end = extra_args + buflen; | |
423 | ||
424 | while (extra_args < end && *extra_args) { | |
425 | saw_extended_args = 1; | |
426 | if (strncasecmp("host=", extra_args, 5) == 0) { | |
427 | val = extra_args + 5; | |
428 | vallen = strlen(val) + 1; | |
429 | if (*val) { | |
eb30aed7 JL |
430 | /* Split <host>:<port> at colon. */ |
431 | char *host = val; | |
432 | char *port = strrchr(host, ':'); | |
dd467629 JL |
433 | if (port) { |
434 | *port = 0; | |
435 | port++; | |
eb30aed7 | 436 | interp_set_entry(table, INTERP_SLOT_PORT, port); |
dd467629 | 437 | } |
eb30aed7 | 438 | interp_set_entry(table, INTERP_SLOT_HOST, host); |
49ba83fb | 439 | } |
eb30aed7 | 440 | |
49ba83fb JL |
441 | /* On to the next one */ |
442 | extra_args = val + vallen; | |
443 | } | |
444 | } | |
445 | } | |
446 | ||
52fae7de | 447 | static void fill_in_extra_table_entries(struct interp *itable) |
dd467629 JL |
448 | { |
449 | char *hp; | |
dd467629 JL |
450 | |
451 | /* | |
452 | * Replace literal host with lowercase-ized hostname. | |
453 | */ | |
454 | hp = interp_table[INTERP_SLOT_HOST].value; | |
83543a24 JH |
455 | if (!hp) |
456 | return; | |
dd467629 JL |
457 | for ( ; *hp; hp++) |
458 | *hp = tolower(*hp); | |
459 | ||
460 | /* | |
461 | * Locate canonical hostname and its IP address. | |
462 | */ | |
463 | #ifndef NO_IPV6 | |
464 | { | |
465 | struct addrinfo hints; | |
466 | struct addrinfo *ai, *ai0; | |
467 | int gai; | |
468 | static char addrbuf[HOST_NAME_MAX + 1]; | |
469 | ||
470 | memset(&hints, 0, sizeof(hints)); | |
471 | hints.ai_flags = AI_CANONNAME; | |
472 | ||
473 | gai = getaddrinfo(interp_table[INTERP_SLOT_HOST].value, 0, &hints, &ai0); | |
474 | if (!gai) { | |
475 | for (ai = ai0; ai; ai = ai->ai_next) { | |
476 | struct sockaddr_in *sin_addr = (void *)ai->ai_addr; | |
477 | ||
dd467629 JL |
478 | inet_ntop(AF_INET, &sin_addr->sin_addr, |
479 | addrbuf, sizeof(addrbuf)); | |
eb30aed7 JL |
480 | interp_set_entry(interp_table, |
481 | INTERP_SLOT_CANON_HOST, ai->ai_canonname); | |
482 | interp_set_entry(interp_table, | |
483 | INTERP_SLOT_IP, addrbuf); | |
dd467629 JL |
484 | break; |
485 | } | |
486 | freeaddrinfo(ai0); | |
487 | } | |
488 | } | |
489 | #else | |
490 | { | |
491 | struct hostent *hent; | |
492 | struct sockaddr_in sa; | |
493 | char **ap; | |
494 | static char addrbuf[HOST_NAME_MAX + 1]; | |
495 | ||
496 | hent = gethostbyname(interp_table[INTERP_SLOT_HOST].value); | |
dd467629 JL |
497 | |
498 | ap = hent->h_addr_list; | |
499 | memset(&sa, 0, sizeof sa); | |
500 | sa.sin_family = hent->h_addrtype; | |
501 | sa.sin_port = htons(0); | |
502 | memcpy(&sa.sin_addr, *ap, hent->h_length); | |
503 | ||
504 | inet_ntop(hent->h_addrtype, &sa.sin_addr, | |
505 | addrbuf, sizeof(addrbuf)); | |
eb30aed7 JL |
506 | |
507 | interp_set_entry(interp_table, INTERP_SLOT_CANON_HOST, hent->h_name); | |
508 | interp_set_entry(interp_table, INTERP_SLOT_IP, addrbuf); | |
dd467629 JL |
509 | } |
510 | #endif | |
dd467629 JL |
511 | } |
512 | ||
513 | ||
5b276ee4 | 514 | static int execute(struct sockaddr *addr) |
a87e8be2 | 515 | { |
7d80694a | 516 | static char line[1000]; |
d819e4e6 | 517 | int pktlen, len, i; |
7d80694a | 518 | |
5b276ee4 DW |
519 | if (addr) { |
520 | char addrbuf[256] = ""; | |
521 | int port = -1; | |
522 | ||
523 | if (addr->sa_family == AF_INET) { | |
524 | struct sockaddr_in *sin_addr = (void *) addr; | |
525 | inet_ntop(addr->sa_family, &sin_addr->sin_addr, addrbuf, sizeof(addrbuf)); | |
c67359be | 526 | port = ntohs(sin_addr->sin_port); |
5b276ee4 DW |
527 | #ifndef NO_IPV6 |
528 | } else if (addr && addr->sa_family == AF_INET6) { | |
529 | struct sockaddr_in6 *sin6_addr = (void *) addr; | |
530 | ||
531 | char *buf = addrbuf; | |
532 | *buf++ = '['; *buf = '\0'; /* stpcpy() is cool */ | |
533 | inet_ntop(AF_INET6, &sin6_addr->sin6_addr, buf, sizeof(addrbuf) - 1); | |
534 | strcat(buf, "]"); | |
535 | ||
c67359be | 536 | port = ntohs(sin6_addr->sin6_port); |
5b276ee4 DW |
537 | #endif |
538 | } | |
539 | loginfo("Connection from %s:%d", addrbuf, port); | |
540 | } | |
541 | ||
960deccb | 542 | alarm(init_timeout ? init_timeout : timeout); |
5ad312be | 543 | pktlen = packet_read_line(0, line, sizeof(line)); |
960deccb | 544 | alarm(0); |
7d80694a | 545 | |
5ad312be JL |
546 | len = strlen(line); |
547 | if (pktlen != len) | |
548 | loginfo("Extended attributes (%d bytes) exist <%.*s>", | |
549 | (int) pktlen - len, | |
550 | (int) pktlen - len, line + len + 1); | |
83543a24 | 551 | if (len && line[len-1] == '\n') { |
7d80694a | 552 | line[--len] = 0; |
83543a24 JH |
553 | pktlen--; |
554 | } | |
7d80694a | 555 | |
eb30aed7 JL |
556 | /* |
557 | * Initialize the path interpolation table for this connection. | |
558 | */ | |
559 | interp_clear_table(interp_table, ARRAY_SIZE(interp_table)); | |
560 | interp_set_entry(interp_table, INTERP_SLOT_PERCENT, "%"); | |
561 | ||
dd467629 | 562 | if (len != pktlen) { |
eb30aed7 | 563 | parse_extra_args(interp_table, line + len + 1, pktlen - len - 1); |
dd467629 JL |
564 | fill_in_extra_table_entries(interp_table); |
565 | } | |
49ba83fb | 566 | |
d819e4e6 JH |
567 | for (i = 0; i < ARRAY_SIZE(daemon_service); i++) { |
568 | struct daemon_service *s = &(daemon_service[i]); | |
569 | int namelen = strlen(s->name); | |
599065a3 | 570 | if (!prefixcmp(line, "git-") && |
d819e4e6 | 571 | !strncmp(s->name, line + 4, namelen) && |
49ba83fb | 572 | line[namelen + 4] == ' ') { |
eb30aed7 JL |
573 | /* |
574 | * Note: The directory here is probably context sensitive, | |
575 | * and might depend on the actual service being performed. | |
576 | */ | |
577 | interp_set_entry(interp_table, | |
578 | INTERP_SLOT_DIR, line + namelen + 5); | |
49ba83fb JL |
579 | return run_service(interp_table, s); |
580 | } | |
d819e4e6 | 581 | } |
a87e8be2 | 582 | |
f8ff0c06 | 583 | logerror("Protocol error: '%s'", line); |
a87e8be2 LT |
584 | return -1; |
585 | } | |
586 | ||
3bd62c21 | 587 | static int max_connections = 32; |
66e631de | 588 | |
3bd62c21 | 589 | static unsigned int live_children; |
66e631de | 590 | |
4d8fa916 | 591 | static struct child { |
3bd62c21 | 592 | struct child *next; |
66e631de | 593 | pid_t pid; |
df076bdb | 594 | struct sockaddr_storage address; |
3bd62c21 | 595 | } *firstborn; |
66e631de | 596 | |
3bd62c21 | 597 | static void add_child(pid_t pid, struct sockaddr *addr, int addrlen) |
66e631de | 598 | { |
460c2010 JH |
599 | struct child *newborn, **cradle; |
600 | ||
601 | /* | |
602 | * This must be xcalloc() -- we'll compare the whole sockaddr_storage | |
603 | * but individual address may be shorter. | |
604 | */ | |
605 | newborn = xcalloc(1, sizeof(*newborn)); | |
606 | live_children++; | |
607 | newborn->pid = pid; | |
608 | memcpy(&newborn->address, addr, addrlen); | |
609 | for (cradle = &firstborn; *cradle; cradle = &(*cradle)->next) | |
610 | if (!memcmp(&(*cradle)->address, &newborn->address, | |
611 | sizeof(newborn->address))) | |
612 | break; | |
613 | newborn->next = *cradle; | |
614 | *cradle = newborn; | |
66e631de LT |
615 | } |
616 | ||
3bd62c21 | 617 | static void remove_child(pid_t pid) |
66e631de | 618 | { |
3bd62c21 | 619 | struct child **cradle, *blanket; |
66e631de | 620 | |
3bd62c21 SB |
621 | for (cradle = &firstborn; (blanket = *cradle); cradle = &blanket->next) |
622 | if (blanket->pid == pid) { | |
623 | *cradle = blanket->next; | |
624 | live_children--; | |
625 | free(blanket); | |
626 | break; | |
627 | } | |
66e631de LT |
628 | } |
629 | ||
630 | /* | |
631 | * This gets called if the number of connections grows | |
632 | * past "max_connections". | |
633 | * | |
3bd62c21 | 634 | * We kill the newest connection from a duplicate IP. |
66e631de | 635 | */ |
3bd62c21 | 636 | static void kill_some_child(void) |
66e631de | 637 | { |
460c2010 | 638 | const struct child *blanket, *next; |
66e631de | 639 | |
460c2010 JH |
640 | if (!(blanket = firstborn)) |
641 | return; | |
695605b5 | 642 | |
460c2010 JH |
643 | for (; (next = blanket->next); blanket = next) |
644 | if (!memcmp(&blanket->address, &next->address, | |
645 | sizeof(next->address))) { | |
646 | kill(blanket->pid, SIGTERM); | |
647 | break; | |
648 | } | |
a5a9126b JS |
649 | } |
650 | ||
3bd62c21 | 651 | static void check_dead_children(void) |
a87e8be2 | 652 | { |
3bd62c21 SB |
653 | int status; |
654 | pid_t pid; | |
02d57da4 | 655 | |
460c2010 | 656 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { |
3bd62c21 SB |
657 | const char *dead = ""; |
658 | remove_child(pid); | |
460c2010 | 659 | if (!WIFEXITED(status) || (WEXITSTATUS(status) > 0)) |
3bd62c21 | 660 | dead = " (with error)"; |
85e72830 | 661 | loginfo("[%"PRIuMAX"] Disconnected%s", (uintmax_t)pid, dead); |
02d57da4 LT |
662 | } |
663 | } | |
664 | ||
7fa09084 | 665 | static void handle(int incoming, struct sockaddr *addr, int addrlen) |
02d57da4 | 666 | { |
3bd62c21 | 667 | pid_t pid; |
02d57da4 | 668 | |
3bd62c21 SB |
669 | if (max_connections && live_children >= max_connections) { |
670 | kill_some_child(); | |
460c2010 | 671 | sleep(1); /* give it some time to die */ |
3bd62c21 SB |
672 | check_dead_children(); |
673 | if (live_children >= max_connections) { | |
674 | close(incoming); | |
675 | logerror("Too many children, dropping connection"); | |
676 | return; | |
677 | } | |
678 | } | |
02d57da4 | 679 | |
3bd62c21 | 680 | if ((pid = fork())) { |
02d57da4 | 681 | close(incoming); |
3bd62c21 SB |
682 | if (pid < 0) { |
683 | logerror("Couldn't fork %s", strerror(errno)); | |
02d57da4 | 684 | return; |
3bd62c21 | 685 | } |
02d57da4 | 686 | |
3bd62c21 | 687 | add_child(pid, addr, addrlen); |
a87e8be2 LT |
688 | return; |
689 | } | |
690 | ||
691 | dup2(incoming, 0); | |
692 | dup2(incoming, 1); | |
693 | close(incoming); | |
f8ff0c06 | 694 | |
5b276ee4 | 695 | exit(execute(addr)); |
a87e8be2 LT |
696 | } |
697 | ||
eaa94919 LT |
698 | static void child_handler(int signo) |
699 | { | |
460c2010 JH |
700 | /* |
701 | * Otherwise empty handler because systemcalls will get interrupted | |
695605b5 SB |
702 | * upon signal receipt |
703 | * SysV needs the handler to be rearmed | |
704 | */ | |
bd7b371e | 705 | signal(SIGCHLD, child_handler); |
eaa94919 LT |
706 | } |
707 | ||
1955fabf MW |
708 | static int set_reuse_addr(int sockfd) |
709 | { | |
710 | int on = 1; | |
711 | ||
712 | if (!reuseaddr) | |
713 | return 0; | |
714 | return setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, | |
715 | &on, sizeof(on)); | |
716 | } | |
717 | ||
6573faff PA |
718 | #ifndef NO_IPV6 |
719 | ||
dd467629 | 720 | static int socksetup(char *listen_addr, int listen_port, int **socklist_p) |
a87e8be2 | 721 | { |
df076bdb YH |
722 | int socknum = 0, *socklist = NULL; |
723 | int maxfd = -1; | |
df076bdb | 724 | char pbuf[NI_MAXSERV]; |
6573faff PA |
725 | struct addrinfo hints, *ai0, *ai; |
726 | int gai; | |
20276889 | 727 | long flags; |
df076bdb | 728 | |
dd467629 | 729 | sprintf(pbuf, "%d", listen_port); |
df076bdb YH |
730 | memset(&hints, 0, sizeof(hints)); |
731 | hints.ai_family = AF_UNSPEC; | |
732 | hints.ai_socktype = SOCK_STREAM; | |
733 | hints.ai_protocol = IPPROTO_TCP; | |
734 | hints.ai_flags = AI_PASSIVE; | |
735 | ||
dd467629 | 736 | gai = getaddrinfo(listen_addr, pbuf, &hints, &ai0); |
df076bdb YH |
737 | if (gai) |
738 | die("getaddrinfo() failed: %s\n", gai_strerror(gai)); | |
739 | ||
df076bdb YH |
740 | for (ai = ai0; ai; ai = ai->ai_next) { |
741 | int sockfd; | |
df076bdb YH |
742 | |
743 | sockfd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); | |
744 | if (sockfd < 0) | |
745 | continue; | |
746 | if (sockfd >= FD_SETSIZE) { | |
df0daf8a | 747 | logerror("Socket descriptor too large"); |
df076bdb YH |
748 | close(sockfd); |
749 | continue; | |
750 | } | |
751 | ||
752 | #ifdef IPV6_V6ONLY | |
753 | if (ai->ai_family == AF_INET6) { | |
754 | int on = 1; | |
755 | setsockopt(sockfd, IPPROTO_IPV6, IPV6_V6ONLY, | |
756 | &on, sizeof(on)); | |
757 | /* Note: error is not fatal */ | |
758 | } | |
759 | #endif | |
760 | ||
1955fabf MW |
761 | if (set_reuse_addr(sockfd)) { |
762 | close(sockfd); | |
0032d548 | 763 | continue; |
1955fabf MW |
764 | } |
765 | ||
df076bdb YH |
766 | if (bind(sockfd, ai->ai_addr, ai->ai_addrlen) < 0) { |
767 | close(sockfd); | |
768 | continue; /* not fatal */ | |
769 | } | |
770 | if (listen(sockfd, 5) < 0) { | |
771 | close(sockfd); | |
772 | continue; /* not fatal */ | |
773 | } | |
774 | ||
20276889 AJ |
775 | flags = fcntl(sockfd, F_GETFD, 0); |
776 | if (flags >= 0) | |
777 | fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC); | |
778 | ||
83572c1a | 779 | socklist = xrealloc(socklist, sizeof(int) * (socknum + 1)); |
df076bdb YH |
780 | socklist[socknum++] = sockfd; |
781 | ||
df076bdb YH |
782 | if (maxfd < sockfd) |
783 | maxfd = sockfd; | |
784 | } | |
785 | ||
786 | freeaddrinfo(ai0); | |
787 | ||
6573faff PA |
788 | *socklist_p = socklist; |
789 | return socknum; | |
790 | } | |
791 | ||
792 | #else /* NO_IPV6 */ | |
793 | ||
100690b6 | 794 | static int socksetup(char *listen_addr, int listen_port, int **socklist_p) |
6573faff PA |
795 | { |
796 | struct sockaddr_in sin; | |
797 | int sockfd; | |
20276889 | 798 | long flags; |
6573faff | 799 | |
dd467629 JL |
800 | memset(&sin, 0, sizeof sin); |
801 | sin.sin_family = AF_INET; | |
802 | sin.sin_port = htons(listen_port); | |
803 | ||
804 | if (listen_addr) { | |
805 | /* Well, host better be an IP address here. */ | |
806 | if (inet_pton(AF_INET, listen_addr, &sin.sin_addr.s_addr) <= 0) | |
807 | return 0; | |
808 | } else { | |
809 | sin.sin_addr.s_addr = htonl(INADDR_ANY); | |
810 | } | |
811 | ||
6573faff PA |
812 | sockfd = socket(AF_INET, SOCK_STREAM, 0); |
813 | if (sockfd < 0) | |
814 | return 0; | |
815 | ||
1955fabf MW |
816 | if (set_reuse_addr(sockfd)) { |
817 | close(sockfd); | |
818 | return 0; | |
819 | } | |
820 | ||
6573faff PA |
821 | if ( bind(sockfd, (struct sockaddr *)&sin, sizeof sin) < 0 ) { |
822 | close(sockfd); | |
823 | return 0; | |
824 | } | |
a87e8be2 | 825 | |
f35230fb PS |
826 | if (listen(sockfd, 5) < 0) { |
827 | close(sockfd); | |
828 | return 0; | |
829 | } | |
830 | ||
20276889 AJ |
831 | flags = fcntl(sockfd, F_GETFD, 0); |
832 | if (flags >= 0) | |
833 | fcntl(sockfd, F_SETFD, flags | FD_CLOEXEC); | |
834 | ||
1b4713fb | 835 | *socklist_p = xmalloc(sizeof(int)); |
6573faff | 836 | **socklist_p = sockfd; |
f35230fb | 837 | return 1; |
6573faff PA |
838 | } |
839 | ||
840 | #endif | |
841 | ||
842 | static int service_loop(int socknum, int *socklist) | |
843 | { | |
844 | struct pollfd *pfd; | |
845 | int i; | |
846 | ||
695605b5 | 847 | pfd = xcalloc(socknum, sizeof(struct pollfd)); |
6573faff PA |
848 | |
849 | for (i = 0; i < socknum; i++) { | |
850 | pfd[i].fd = socklist[i]; | |
851 | pfd[i].events = POLLIN; | |
852 | } | |
9220282a PA |
853 | |
854 | signal(SIGCHLD, child_handler); | |
a87e8be2 LT |
855 | |
856 | for (;;) { | |
df076bdb | 857 | int i; |
6573faff | 858 | |
695605b5 SB |
859 | check_dead_children(); |
860 | ||
861 | if (poll(pfd, socknum, -1) < 0) { | |
1eef0b33 | 862 | if (errno != EINTR) { |
df0daf8a | 863 | logerror("Poll failed, resuming: %s", |
1eef0b33 JH |
864 | strerror(errno)); |
865 | sleep(1); | |
866 | } | |
df076bdb YH |
867 | continue; |
868 | } | |
869 | ||
870 | for (i = 0; i < socknum; i++) { | |
6573faff | 871 | if (pfd[i].revents & POLLIN) { |
df076bdb | 872 | struct sockaddr_storage ss; |
7626e49e | 873 | unsigned int sslen = sizeof(ss); |
6573faff | 874 | int incoming = accept(pfd[i].fd, (struct sockaddr *)&ss, &sslen); |
df076bdb YH |
875 | if (incoming < 0) { |
876 | switch (errno) { | |
877 | case EAGAIN: | |
878 | case EINTR: | |
879 | case ECONNABORTED: | |
880 | continue; | |
881 | default: | |
882 | die("accept returned %s", strerror(errno)); | |
883 | } | |
884 | } | |
885 | handle(incoming, (struct sockaddr *)&ss, sslen); | |
a87e8be2 LT |
886 | } |
887 | } | |
a87e8be2 LT |
888 | } |
889 | } | |
890 | ||
258e93a1 ML |
891 | /* if any standard file descriptor is missing open it to /dev/null */ |
892 | static void sanitize_stdfds(void) | |
893 | { | |
894 | int fd = open("/dev/null", O_RDWR, 0); | |
895 | while (fd != -1 && fd < 2) | |
896 | fd = dup(fd); | |
897 | if (fd == -1) | |
898 | die("open /dev/null or dup failed: %s", strerror(errno)); | |
899 | if (fd > 2) | |
900 | close(fd); | |
901 | } | |
902 | ||
a5262768 ML |
903 | static void daemonize(void) |
904 | { | |
905 | switch (fork()) { | |
906 | case 0: | |
907 | break; | |
908 | case -1: | |
909 | die("fork failed: %s", strerror(errno)); | |
910 | default: | |
911 | exit(0); | |
912 | } | |
913 | if (setsid() == -1) | |
914 | die("setsid failed: %s", strerror(errno)); | |
915 | close(0); | |
916 | close(1); | |
917 | close(2); | |
918 | sanitize_stdfds(); | |
919 | } | |
920 | ||
45ed5d7f ML |
921 | static void store_pid(const char *path) |
922 | { | |
923 | FILE *f = fopen(path, "w"); | |
924 | if (!f) | |
925 | die("cannot open pid file %s: %s", path, strerror(errno)); | |
85e72830 | 926 | if (fprintf(f, "%"PRIuMAX"\n", (uintmax_t) getpid()) < 0 || fclose(f) != 0) |
bc4e7d03 | 927 | die("failed to write pid file %s: %s", path, strerror(errno)); |
45ed5d7f ML |
928 | } |
929 | ||
dd467629 | 930 | static int serve(char *listen_addr, int listen_port, struct passwd *pass, gid_t gid) |
6573faff PA |
931 | { |
932 | int socknum, *socklist; | |
4ae22d96 | 933 | |
dd467629 | 934 | socknum = socksetup(listen_addr, listen_port, &socklist); |
6573faff | 935 | if (socknum == 0) |
dd467629 JL |
936 | die("unable to allocate any listen sockets on host %s port %u", |
937 | listen_addr, listen_port); | |
4ae22d96 | 938 | |
678dac6b TS |
939 | if (pass && gid && |
940 | (initgroups(pass->pw_name, gid) || setgid (gid) || | |
941 | setuid(pass->pw_uid))) | |
942 | die("cannot drop privileges"); | |
943 | ||
6573faff | 944 | return service_loop(socknum, socklist); |
4ae22d96 | 945 | } |
6573faff | 946 | |
a87e8be2 LT |
947 | int main(int argc, char **argv) |
948 | { | |
dd467629 JL |
949 | int listen_port = 0; |
950 | char *listen_addr = NULL; | |
e64e1b79 | 951 | int inetd_mode = 0; |
678dac6b | 952 | const char *pid_file = NULL, *user_name = NULL, *group_name = NULL; |
a5262768 | 953 | int detach = 0; |
678dac6b TS |
954 | struct passwd *pass = NULL; |
955 | struct group *group; | |
956 | gid_t gid = 0; | |
a87e8be2 LT |
957 | int i; |
958 | ||
959 | for (i = 1; i < argc; i++) { | |
960 | char *arg = argv[i]; | |
961 | ||
cc44c765 | 962 | if (!prefixcmp(arg, "--listen=")) { |
dd467629 JL |
963 | char *p = arg + 9; |
964 | char *ph = listen_addr = xmalloc(strlen(arg + 9) + 1); | |
965 | while (*p) | |
966 | *ph++ = tolower(*p++); | |
967 | *ph = 0; | |
968 | continue; | |
969 | } | |
cc44c765 | 970 | if (!prefixcmp(arg, "--port=")) { |
a87e8be2 LT |
971 | char *end; |
972 | unsigned long n; | |
973 | n = strtoul(arg+7, &end, 0); | |
974 | if (arg[7] && !*end) { | |
dd467629 | 975 | listen_port = n; |
a87e8be2 LT |
976 | continue; |
977 | } | |
978 | } | |
e64e1b79 LT |
979 | if (!strcmp(arg, "--inetd")) { |
980 | inetd_mode = 1; | |
a8883288 | 981 | log_syslog = 1; |
e64e1b79 LT |
982 | continue; |
983 | } | |
f8ff0c06 PB |
984 | if (!strcmp(arg, "--verbose")) { |
985 | verbose = 1; | |
986 | continue; | |
987 | } | |
9048fe1c PB |
988 | if (!strcmp(arg, "--syslog")) { |
989 | log_syslog = 1; | |
9048fe1c PB |
990 | continue; |
991 | } | |
4ae95682 PA |
992 | if (!strcmp(arg, "--export-all")) { |
993 | export_all_trees = 1; | |
994 | continue; | |
995 | } | |
cc44c765 | 996 | if (!prefixcmp(arg, "--timeout=")) { |
960deccb | 997 | timeout = atoi(arg+10); |
a8883288 | 998 | continue; |
960deccb | 999 | } |
cc44c765 | 1000 | if (!prefixcmp(arg, "--init-timeout=")) { |
960deccb | 1001 | init_timeout = atoi(arg+15); |
a8883288 | 1002 | continue; |
960deccb | 1003 | } |
3bd62c21 SB |
1004 | if (!prefixcmp(arg, "--max-connections=")) { |
1005 | max_connections = atoi(arg+18); | |
1006 | if (max_connections < 0) | |
1007 | max_connections = 0; /* unlimited */ | |
1008 | continue; | |
1009 | } | |
4dbd1352 AE |
1010 | if (!strcmp(arg, "--strict-paths")) { |
1011 | strict_paths = 1; | |
1012 | continue; | |
1013 | } | |
cc44c765 | 1014 | if (!prefixcmp(arg, "--base-path=")) { |
b21c31c9 PB |
1015 | base_path = arg+12; |
1016 | continue; | |
1017 | } | |
73a7a656 JA |
1018 | if (!strcmp(arg, "--base-path-relaxed")) { |
1019 | base_path_relaxed = 1; | |
1020 | continue; | |
1021 | } | |
cc44c765 | 1022 | if (!prefixcmp(arg, "--interpolated-path=")) { |
49ba83fb JL |
1023 | interpolated_path = arg+20; |
1024 | continue; | |
1025 | } | |
1955fabf MW |
1026 | if (!strcmp(arg, "--reuseaddr")) { |
1027 | reuseaddr = 1; | |
1028 | continue; | |
1029 | } | |
603968d2 JH |
1030 | if (!strcmp(arg, "--user-path")) { |
1031 | user_path = ""; | |
1032 | continue; | |
1033 | } | |
cc44c765 | 1034 | if (!prefixcmp(arg, "--user-path=")) { |
603968d2 JH |
1035 | user_path = arg + 12; |
1036 | continue; | |
1037 | } | |
cc44c765 | 1038 | if (!prefixcmp(arg, "--pid-file=")) { |
45ed5d7f ML |
1039 | pid_file = arg + 11; |
1040 | continue; | |
1041 | } | |
a5262768 ML |
1042 | if (!strcmp(arg, "--detach")) { |
1043 | detach = 1; | |
1044 | log_syslog = 1; | |
1045 | continue; | |
1046 | } | |
cc44c765 | 1047 | if (!prefixcmp(arg, "--user=")) { |
678dac6b TS |
1048 | user_name = arg + 7; |
1049 | continue; | |
1050 | } | |
cc44c765 | 1051 | if (!prefixcmp(arg, "--group=")) { |
678dac6b TS |
1052 | group_name = arg + 8; |
1053 | continue; | |
1054 | } | |
cc44c765 | 1055 | if (!prefixcmp(arg, "--enable=")) { |
d819e4e6 JH |
1056 | enable_service(arg + 9, 1); |
1057 | continue; | |
1058 | } | |
cc44c765 | 1059 | if (!prefixcmp(arg, "--disable=")) { |
d819e4e6 JH |
1060 | enable_service(arg + 10, 0); |
1061 | continue; | |
1062 | } | |
cc44c765 | 1063 | if (!prefixcmp(arg, "--allow-override=")) { |
74c0cc21 | 1064 | make_service_overridable(arg + 17, 1); |
d819e4e6 JH |
1065 | continue; |
1066 | } | |
cc44c765 | 1067 | if (!prefixcmp(arg, "--forbid-override=")) { |
74c0cc21 | 1068 | make_service_overridable(arg + 18, 0); |
d819e4e6 JH |
1069 | continue; |
1070 | } | |
4ae95682 PA |
1071 | if (!strcmp(arg, "--")) { |
1072 | ok_paths = &argv[i+1]; | |
1073 | break; | |
1074 | } else if (arg[0] != '-') { | |
1075 | ok_paths = &argv[i]; | |
1076 | break; | |
1077 | } | |
e64e1b79 | 1078 | |
a87e8be2 LT |
1079 | usage(daemon_usage); |
1080 | } | |
1081 | ||
22665bba | 1082 | if (log_syslog) { |
6a992e9e | 1083 | openlog("git-daemon", LOG_PID, LOG_DAEMON); |
22665bba | 1084 | set_die_routine(daemon_die); |
460c2010 | 1085 | } else |
6a992e9e | 1086 | setlinebuf(stderr); /* avoid splitting a message in the middle */ |
22665bba | 1087 | |
678dac6b TS |
1088 | if (inetd_mode && (group_name || user_name)) |
1089 | die("--user and --group are incompatible with --inetd"); | |
1090 | ||
dd467629 JL |
1091 | if (inetd_mode && (listen_port || listen_addr)) |
1092 | die("--listen= and --port= are incompatible with --inetd"); | |
1093 | else if (listen_port == 0) | |
1094 | listen_port = DEFAULT_GIT_PORT; | |
1095 | ||
678dac6b TS |
1096 | if (group_name && !user_name) |
1097 | die("--group supplied without --user"); | |
1098 | ||
1099 | if (user_name) { | |
1100 | pass = getpwnam(user_name); | |
1101 | if (!pass) | |
1102 | die("user not found - %s", user_name); | |
1103 | ||
1104 | if (!group_name) | |
1105 | gid = pass->pw_gid; | |
1106 | else { | |
1107 | group = getgrnam(group_name); | |
1108 | if (!group) | |
1109 | die("group not found - %s", group_name); | |
1110 | ||
1111 | gid = group->gr_gid; | |
1112 | } | |
1113 | } | |
1114 | ||
ad8b4f56 ML |
1115 | if (strict_paths && (!ok_paths || !*ok_paths)) |
1116 | die("option --strict-paths requires a whitelist"); | |
1117 | ||
20632071 JS |
1118 | if (base_path) { |
1119 | struct stat st; | |
1120 | ||
1121 | if (stat(base_path, &st) || !S_ISDIR(st.st_mode)) | |
1122 | die("base-path '%s' does not exist or " | |
1123 | "is not a directory", base_path); | |
1124 | } | |
1125 | ||
7c3693f1 | 1126 | if (inetd_mode) { |
5b276ee4 DW |
1127 | struct sockaddr_storage ss; |
1128 | struct sockaddr *peer = (struct sockaddr *)&ss; | |
1129 | socklen_t slen = sizeof(ss); | |
1130 | ||
ba0012c3 | 1131 | freopen("/dev/null", "w", stderr); |
5b276ee4 DW |
1132 | |
1133 | if (getpeername(0, peer, &slen)) | |
1134 | peer = NULL; | |
1135 | ||
1136 | return execute(peer); | |
7c3693f1 | 1137 | } |
bce8230d | 1138 | |
6a992e9e | 1139 | if (detach) { |
a5262768 | 1140 | daemonize(); |
6a992e9e SB |
1141 | loginfo("Ready to rumble"); |
1142 | } | |
a5262768 ML |
1143 | else |
1144 | sanitize_stdfds(); | |
258e93a1 | 1145 | |
45ed5d7f ML |
1146 | if (pid_file) |
1147 | store_pid(pid_file); | |
1148 | ||
dd467629 | 1149 | return serve(listen_addr, listen_port, pass, gid); |
a87e8be2 | 1150 | } |