| 1 | /* |
| 2 | ashd - A Sane HTTP Daemon |
| 3 | Copyright (C) 2008 Fredrik Tolf <fredrik@dolda2000.com> |
| 4 | |
| 5 | This program is free software: you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation, either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | |
| 19 | #include <stdlib.h> |
| 20 | #include <stdio.h> |
| 21 | #include <string.h> |
| 22 | #include <unistd.h> |
| 23 | #include <signal.h> |
| 24 | #include <errno.h> |
| 25 | #include <ctype.h> |
| 26 | #include <regex.h> |
| 27 | #include <limits.h> |
| 28 | #include <sys/wait.h> |
| 29 | |
| 30 | #ifdef HAVE_CONFIG_H |
| 31 | #include <config.h> |
| 32 | #endif |
| 33 | #include <utils.h> |
| 34 | #include <log.h> |
| 35 | #include <req.h> |
| 36 | #include <proc.h> |
| 37 | #include <resp.h> |
| 38 | #include <cf.h> |
| 39 | |
| 40 | #define PAT_REST 0 |
| 41 | #define PAT_URL 1 |
| 42 | #define PAT_METHOD 2 |
| 43 | #define PAT_HEADER 3 |
| 44 | #define PAT_ALL 4 |
| 45 | |
| 46 | #define PATFL_MSS 1 |
| 47 | #define PATFL_UNQ 2 |
| 48 | |
| 49 | struct config { |
| 50 | struct child *children; |
| 51 | struct pattern *patterns; |
| 52 | }; |
| 53 | |
| 54 | struct rule { |
| 55 | int type; |
| 56 | int fl; |
| 57 | char *header; |
| 58 | regex_t *pattern; |
| 59 | }; |
| 60 | |
| 61 | struct headmod { |
| 62 | struct headmod *next; |
| 63 | char *name, *value; |
| 64 | }; |
| 65 | |
| 66 | struct pattern { |
| 67 | struct pattern *next; |
| 68 | struct headmod *headers; |
| 69 | char *childnm; |
| 70 | struct rule **rules; |
| 71 | char *restpat; |
| 72 | int prio; |
| 73 | }; |
| 74 | |
| 75 | static struct config *gconfig, *lconfig; |
| 76 | static volatile int reload = 0; |
| 77 | |
| 78 | static void freepattern(struct pattern *pat) |
| 79 | { |
| 80 | struct rule **rule; |
| 81 | struct headmod *head; |
| 82 | |
| 83 | for(rule = pat->rules; *rule; rule++) { |
| 84 | if((*rule)->header != NULL) |
| 85 | free((*rule)->header); |
| 86 | if((*rule)->pattern != NULL) { |
| 87 | regfree((*rule)->pattern); |
| 88 | free((*rule)->pattern); |
| 89 | } |
| 90 | free(*rule); |
| 91 | } |
| 92 | while((head = pat->headers) != NULL) { |
| 93 | pat->headers = head->next; |
| 94 | free(head->name); |
| 95 | free(head->value); |
| 96 | free(head); |
| 97 | } |
| 98 | if(pat->childnm != NULL) |
| 99 | free(pat->childnm); |
| 100 | free(pat); |
| 101 | } |
| 102 | |
| 103 | static void freeconfig(struct config *cf) |
| 104 | { |
| 105 | struct child *ch, *nch; |
| 106 | struct pattern *pat, *npat; |
| 107 | |
| 108 | for(ch = cf->children; ch != NULL; ch = nch) { |
| 109 | nch = ch->next; |
| 110 | freechild(ch); |
| 111 | } |
| 112 | for(pat = cf->patterns; pat != NULL; pat = npat) { |
| 113 | npat = pat->next; |
| 114 | freepattern(pat); |
| 115 | } |
| 116 | free(cf); |
| 117 | } |
| 118 | |
| 119 | static struct child *getchild(struct config *cf, char *name) |
| 120 | { |
| 121 | struct child *ch; |
| 122 | |
| 123 | for(ch = cf->children; ch; ch = ch->next) { |
| 124 | if(!strcmp(ch->name, name)) |
| 125 | break; |
| 126 | } |
| 127 | return(ch); |
| 128 | } |
| 129 | |
| 130 | static struct rule *newrule(struct pattern *pat) |
| 131 | { |
| 132 | int i; |
| 133 | struct rule *rule; |
| 134 | |
| 135 | for(i = 0; pat->rules[i]; i++); |
| 136 | pat->rules = srealloc(pat->rules, sizeof(*pat->rules) * (i + 2)); |
| 137 | rule = pat->rules[i] = szmalloc(sizeof(*rule)); |
| 138 | pat->rules[i + 1] = NULL; |
| 139 | return(rule); |
| 140 | } |
| 141 | |
| 142 | static struct pattern *newpattern(void) |
| 143 | { |
| 144 | struct pattern *pat; |
| 145 | |
| 146 | omalloc(pat); |
| 147 | pat->rules = szmalloc(sizeof(*pat->rules)); |
| 148 | return(pat); |
| 149 | } |
| 150 | |
| 151 | static regex_t *regalloc(char *regex, int flags) |
| 152 | { |
| 153 | regex_t *ret; |
| 154 | int res; |
| 155 | char errbuf[256]; |
| 156 | |
| 157 | omalloc(ret); |
| 158 | if((res = regcomp(ret, regex, flags | REG_EXTENDED)) != 0) { |
| 159 | regerror(res, ret, errbuf, sizeof(errbuf)); |
| 160 | flog(LOG_WARNING, "%s: %s", regex, errbuf); |
| 161 | free(ret); |
| 162 | return(NULL); |
| 163 | } |
| 164 | return(ret); |
| 165 | } |
| 166 | |
| 167 | static struct pattern *parsepattern(struct cfstate *s) |
| 168 | { |
| 169 | struct pattern *pat; |
| 170 | int sl; |
| 171 | struct rule *rule; |
| 172 | struct headmod *head; |
| 173 | regex_t *regex; |
| 174 | int rxfl; |
| 175 | |
| 176 | if(!strcmp(s->argv[0], "match")) { |
| 177 | s->expstart = 1; |
| 178 | pat = newpattern(); |
| 179 | } else { |
| 180 | return(NULL); |
| 181 | } |
| 182 | |
| 183 | sl = s->lno; |
| 184 | while(1) { |
| 185 | getcfline(s); |
| 186 | if(!strcmp(s->argv[0], "point") || |
| 187 | !strcmp(s->argv[0], "url") || |
| 188 | !strcmp(s->argv[0], "method")) { |
| 189 | if(s->argc < 2) { |
| 190 | flog(LOG_WARNING, "%s:%i: missing pattern for `%s' match", s->file, s->lno, s->argv[0]); |
| 191 | continue; |
| 192 | } |
| 193 | rxfl = 0; |
| 194 | if(s->argc >= 3) { |
| 195 | if(strchr(s->argv[2], 'i')) |
| 196 | rxfl |= REG_ICASE; |
| 197 | } |
| 198 | if((regex = regalloc(s->argv[1], rxfl)) == NULL) { |
| 199 | flog(LOG_WARNING, "%s:%i: invalid regex for `%s' match", s->file, s->lno, s->argv[0]); |
| 200 | continue; |
| 201 | } |
| 202 | rule = newrule(pat); |
| 203 | if(!strcmp(s->argv[0], "point")) |
| 204 | rule->type = PAT_REST; |
| 205 | else if(!strcmp(s->argv[0], "url")) |
| 206 | rule->type = PAT_URL; |
| 207 | else if(!strcmp(s->argv[0], "method")) |
| 208 | rule->type = PAT_METHOD; |
| 209 | rule->pattern = regex; |
| 210 | if(s->argc >= 3) { |
| 211 | if(strchr(s->argv[2], 's')) |
| 212 | rule->fl |= PATFL_MSS; |
| 213 | if(strchr(s->argv[2], 'q')) |
| 214 | rule->fl |= PATFL_UNQ; |
| 215 | } |
| 216 | } else if(!strcmp(s->argv[0], "header")) { |
| 217 | if(s->argc < 3) { |
| 218 | flog(LOG_WARNING, "%s:%i: missing header name or pattern for `header' match", s->file, s->lno); |
| 219 | continue; |
| 220 | } |
| 221 | rxfl = 0; |
| 222 | if(s->argc >= 4) { |
| 223 | if(strchr(s->argv[3], 'i')) |
| 224 | rxfl |= REG_ICASE; |
| 225 | } |
| 226 | if((regex = regalloc(s->argv[2], rxfl)) == NULL) { |
| 227 | flog(LOG_WARNING, "%s:%i: invalid regex for `header' match", s->file, s->lno); |
| 228 | continue; |
| 229 | } |
| 230 | rule = newrule(pat); |
| 231 | rule->type = PAT_HEADER; |
| 232 | rule->header = sstrdup(s->argv[1]); |
| 233 | rule->pattern = regex; |
| 234 | if(s->argc >= 4) { |
| 235 | if(strchr(s->argv[3], 's')) |
| 236 | rule->fl |= PATFL_MSS; |
| 237 | } |
| 238 | } else if(!strcmp(s->argv[0], "all")) { |
| 239 | newrule(pat)->type = PAT_ALL; |
| 240 | } else if(!strcmp(s->argv[0], "default")) { |
| 241 | newrule(pat)->type = PAT_ALL; |
| 242 | pat->prio = -10; |
| 243 | } else if(!strcmp(s->argv[0], "order") || !strcmp(s->argv[0], "priority")) { |
| 244 | if(s->argc < 2) { |
| 245 | flog(LOG_WARNING, "%s:%i: missing specification for `%s' directive", s->file, s->lno, s->argv[0]); |
| 246 | continue; |
| 247 | } |
| 248 | pat->prio = atoi(s->argv[1]); |
| 249 | } else if(!strcmp(s->argv[0], "handler")) { |
| 250 | if(s->argc < 2) { |
| 251 | flog(LOG_WARNING, "%s:%i: missing child name for `handler' directive", s->file, s->lno); |
| 252 | continue; |
| 253 | } |
| 254 | if(pat->childnm != NULL) |
| 255 | free(pat->childnm); |
| 256 | pat->childnm = sstrdup(s->argv[1]); |
| 257 | } else if(!strcmp(s->argv[0], "restpat")) { |
| 258 | if(s->argc < 2) { |
| 259 | flog(LOG_WARNING, "%s:%i: missing pattern for `restpat' directive", s->file, s->lno); |
| 260 | continue; |
| 261 | } |
| 262 | if(pat->restpat != NULL) |
| 263 | free(pat->restpat); |
| 264 | pat->restpat = sstrdup(s->argv[1]); |
| 265 | } else if(!strcmp(s->argv[0], "set") || !strcmp(s->argv[0], "xset")) { |
| 266 | if(s->argc < 3) { |
| 267 | flog(LOG_WARNING, "%s:%i: missing header name or pattern for `%s' directive", s->file, s->lno, s->argv[0]); |
| 268 | continue; |
| 269 | } |
| 270 | omalloc(head); |
| 271 | if(!strcmp(s->argv[0], "xset")) |
| 272 | head->name = sprintf2("X-Ash-%s", s->argv[1]); |
| 273 | else |
| 274 | head->name = sstrdup(s->argv[1]); |
| 275 | head->value = sstrdup(s->argv[2]); |
| 276 | head->next = pat->headers; |
| 277 | pat->headers = head; |
| 278 | } else if(!strcmp(s->argv[0], "end") || !strcmp(s->argv[0], "eof")) { |
| 279 | break; |
| 280 | } else { |
| 281 | flog(LOG_WARNING, "%s:%i: unknown directive `%s' in pattern declaration", s->file, s->lno, s->argv[0]); |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | if(pat->rules[0] == NULL) { |
| 286 | flog(LOG_WARNING, "%s:%i: missing rules in match declaration", s->file, sl); |
| 287 | freepattern(pat); |
| 288 | return(NULL); |
| 289 | } |
| 290 | if(pat->childnm == NULL) { |
| 291 | flog(LOG_WARNING, "%s:%i: missing handler in match declaration", s->file, sl); |
| 292 | freepattern(pat); |
| 293 | return(NULL); |
| 294 | } |
| 295 | return(pat); |
| 296 | } |
| 297 | |
| 298 | static struct config *readconfig(char *filename) |
| 299 | { |
| 300 | struct cfstate *s; |
| 301 | struct config *cf; |
| 302 | struct child *ch; |
| 303 | struct pattern *pat; |
| 304 | FILE *in; |
| 305 | |
| 306 | if((in = fopen(filename, "r")) == NULL) { |
| 307 | flog(LOG_WARNING, "%s: %s", filename, strerror(errno)); |
| 308 | return(NULL); |
| 309 | } |
| 310 | s = mkcfparser(in, filename); |
| 311 | omalloc(cf); |
| 312 | |
| 313 | while(1) { |
| 314 | getcfline(s); |
| 315 | if((ch = parsechild(s)) != NULL) { |
| 316 | ch->next = cf->children; |
| 317 | cf->children = ch; |
| 318 | } else if((pat = parsepattern(s)) != NULL) { |
| 319 | pat->next = cf->patterns; |
| 320 | cf->patterns = pat; |
| 321 | } else if(!strcmp(s->argv[0], "eof")) { |
| 322 | break; |
| 323 | } else { |
| 324 | flog(LOG_WARNING, "%s:%i: unknown directive `%s'", s->file, s->lno, s->argv[0]); |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | freecfparser(s); |
| 329 | fclose(in); |
| 330 | return(cf); |
| 331 | } |
| 332 | |
| 333 | static void exprestpat(struct hthead *req, struct pattern *pat, char **mstr) |
| 334 | { |
| 335 | char *p, *p2, *hdr; |
| 336 | int mc; |
| 337 | struct charbuf buf; |
| 338 | |
| 339 | if(mstr == NULL) |
| 340 | mc = 0; |
| 341 | else |
| 342 | for(mc = 0; mstr[mc]; mc++); |
| 343 | bufinit(buf); |
| 344 | for(p = pat->restpat; *p; ) { |
| 345 | if(*p == '$') { |
| 346 | p++; |
| 347 | if((*p >= '0') && (*p <= '9')) { |
| 348 | if(*p - '0' < mc) |
| 349 | bufcatstr(buf, mstr[*p - '0']); |
| 350 | p++; |
| 351 | } else if(*p == '_') { |
| 352 | bufcatstr(buf, req->rest); |
| 353 | p++; |
| 354 | } else if(*p == '$') { |
| 355 | bufadd(buf, '$'); |
| 356 | p++; |
| 357 | } else if(*p == '{') { |
| 358 | if((p2 = strchr(p, '}')) == NULL) { |
| 359 | p++; |
| 360 | } else { |
| 361 | hdr = getheader(req, sprintf3("%.*s", p2 - p - 1, p + 1)); |
| 362 | if(hdr) |
| 363 | bufcatstr(buf, hdr); |
| 364 | } |
| 365 | } else if(!*p) { |
| 366 | } |
| 367 | } else { |
| 368 | bufadd(buf, *(p++)); |
| 369 | } |
| 370 | } |
| 371 | bufadd(buf, 0); |
| 372 | replrest(req, buf.b); |
| 373 | buffree(buf); |
| 374 | } |
| 375 | |
| 376 | static void qoffsets(char *buf, int *obuf, char *pstr, int unquote) |
| 377 | { |
| 378 | int i, o, d1, d2; |
| 379 | |
| 380 | if(unquote) { |
| 381 | i = o = 0; |
| 382 | while(pstr[i]) { |
| 383 | obuf[o] = i; |
| 384 | if((pstr[i] == '%') && ((d1 = hexdigit(pstr[i + 1])) >= 0) && ((d2 = hexdigit(pstr[i + 2])) >= 0)) { |
| 385 | buf[o] = (d1 << 4) | d2; |
| 386 | i += 3; |
| 387 | } else { |
| 388 | buf[o] = pstr[i]; |
| 389 | i++; |
| 390 | } |
| 391 | o++; |
| 392 | } |
| 393 | buf[o] = 0; |
| 394 | obuf[o] = i; |
| 395 | } else { |
| 396 | for(i = 0; pstr[i]; i++) { |
| 397 | buf[i] = pstr[i]; |
| 398 | obuf[i] = i; |
| 399 | } |
| 400 | buf[i] = 0; |
| 401 | obuf[i] = i; |
| 402 | } |
| 403 | } |
| 404 | |
| 405 | struct match { |
| 406 | struct pattern *pat; |
| 407 | char **mstr; |
| 408 | int rmo; |
| 409 | }; |
| 410 | |
| 411 | static void freematch(struct match *match) |
| 412 | { |
| 413 | freeca(match->mstr); |
| 414 | free(match); |
| 415 | } |
| 416 | |
| 417 | static struct match *findmatch(struct config *cf, struct hthead *req, struct match *match) |
| 418 | { |
| 419 | int i, o; |
| 420 | struct pattern *pat; |
| 421 | struct rule *rule; |
| 422 | int rmo; |
| 423 | regex_t *rx; |
| 424 | char *pstr; |
| 425 | char **mstr; |
| 426 | regmatch_t gr[10]; |
| 427 | |
| 428 | mstr = NULL; |
| 429 | for(pat = cf->patterns; pat != NULL; pat = pat->next) { |
| 430 | if(match && (pat->prio <= match->pat->prio)) |
| 431 | continue; |
| 432 | rmo = -1; |
| 433 | for(i = 0; (rule = pat->rules[i]) != NULL; i++) { |
| 434 | rx = NULL; |
| 435 | if(rule->type == PAT_REST) { |
| 436 | rx = rule->pattern; |
| 437 | pstr = req->rest; |
| 438 | } else if(rule->type == PAT_URL) { |
| 439 | rx = rule->pattern; |
| 440 | pstr = req->url; |
| 441 | } else if(rule->type == PAT_METHOD) { |
| 442 | rx = rule->pattern; |
| 443 | pstr = req->method; |
| 444 | } else if(rule->type == PAT_HEADER) { |
| 445 | rx = rule->pattern; |
| 446 | if(!(pstr = getheader(req, rule->header))) |
| 447 | break; |
| 448 | } |
| 449 | if(rx != NULL) { |
| 450 | char pbuf[strlen(pstr) + 1]; |
| 451 | int obuf[strlen(pstr) + 1]; |
| 452 | qoffsets(pbuf, obuf, pstr, !!(rule->fl & PATFL_UNQ)); |
| 453 | if(regexec(rx, pbuf, 10, gr, 0)) |
| 454 | break; |
| 455 | else if(rule->type == PAT_REST) |
| 456 | rmo = obuf[gr[0].rm_eo]; |
| 457 | if(rule->fl & PATFL_MSS) { |
| 458 | if(mstr) { |
| 459 | flog(LOG_WARNING, "two pattern rules marked with `s' flag found (for handler %s)", pat->childnm); |
| 460 | freeca(mstr); |
| 461 | } |
| 462 | for(o = 0; o < 10; o++) { |
| 463 | if(gr[o].rm_so < 0) |
| 464 | break; |
| 465 | } |
| 466 | mstr = szmalloc((o + 1) * sizeof(*mstr)); |
| 467 | for(o = 0; o < 10; o++) { |
| 468 | if(gr[o].rm_so < 0) |
| 469 | break; |
| 470 | mstr[o] = smalloc(obuf[gr[o].rm_eo] - obuf[gr[o].rm_so] + 1); |
| 471 | memcpy(mstr[o], pstr + obuf[gr[o].rm_so], obuf[gr[o].rm_eo] - obuf[gr[o].rm_so]); |
| 472 | mstr[o][obuf[gr[o].rm_eo] - obuf[gr[o].rm_so]] = 0; |
| 473 | } |
| 474 | } |
| 475 | } else if(rule->type == PAT_ALL) { |
| 476 | } |
| 477 | } |
| 478 | if(!rule) { |
| 479 | if(match) |
| 480 | freematch(match); |
| 481 | omalloc(match); |
| 482 | match->pat = pat; |
| 483 | match->mstr = mstr; |
| 484 | match->rmo = rmo; |
| 485 | } |
| 486 | } |
| 487 | return(match); |
| 488 | } |
| 489 | |
| 490 | static void execmatch(struct hthead *req, struct match *match) |
| 491 | { |
| 492 | struct headmod *head; |
| 493 | |
| 494 | if(match->pat->restpat) |
| 495 | exprestpat(req, match->pat, match->mstr); |
| 496 | else if(match->rmo != -1) |
| 497 | replrest(req, req->rest + match->rmo); |
| 498 | for(head = match->pat->headers; head != NULL; head = head->next) { |
| 499 | headrmheader(req, head->name); |
| 500 | headappheader(req, head->name, head->value); |
| 501 | } |
| 502 | } |
| 503 | |
| 504 | static void childerror(struct hthead *req, int fd) |
| 505 | { |
| 506 | if(errno == EAGAIN) |
| 507 | simpleerror(fd, 500, "Server Error", "The request handler is overloaded."); |
| 508 | else |
| 509 | simpleerror(fd, 500, "Server Error", "The request handler crashed."); |
| 510 | } |
| 511 | |
| 512 | static void serve(struct hthead *req, int fd) |
| 513 | { |
| 514 | struct match *match; |
| 515 | struct child *ch; |
| 516 | |
| 517 | match = NULL; |
| 518 | match = findmatch(lconfig, req, match); |
| 519 | if(gconfig != NULL) |
| 520 | match = findmatch(gconfig, req, match); |
| 521 | if(match == NULL) { |
| 522 | simpleerror(fd, 404, "Not Found", "The requested resource could not be found on this server."); |
| 523 | return; |
| 524 | } |
| 525 | ch = NULL; |
| 526 | if(ch == NULL) |
| 527 | ch = getchild(lconfig, match->pat->childnm); |
| 528 | if((ch == NULL) && (gconfig != NULL)) |
| 529 | ch = getchild(gconfig, match->pat->childnm); |
| 530 | if(ch == NULL) { |
| 531 | flog(LOG_ERR, "child %s requested, but was not declared", match->pat->childnm); |
| 532 | simpleerror(fd, 500, "Configuration Error", "The server is erroneously configured. Handler %s was requested, but not declared.", match->pat->childnm); |
| 533 | freematch(match); |
| 534 | return; |
| 535 | } |
| 536 | |
| 537 | execmatch(req, match); |
| 538 | if(childhandle(ch, req, fd, NULL, NULL)) |
| 539 | childerror(req, fd); |
| 540 | freematch(match); |
| 541 | } |
| 542 | |
| 543 | static void reloadconf(char *nm) |
| 544 | { |
| 545 | struct config *cf; |
| 546 | |
| 547 | if((cf = readconfig(nm)) == NULL) { |
| 548 | flog(LOG_WARNING, "could not reload configuration file `%s'", nm); |
| 549 | return; |
| 550 | } |
| 551 | mergechildren(cf->children, lconfig->children); |
| 552 | freeconfig(lconfig); |
| 553 | lconfig = cf; |
| 554 | } |
| 555 | |
| 556 | static void chldhandler(int sig) |
| 557 | { |
| 558 | pid_t pid; |
| 559 | int st; |
| 560 | |
| 561 | while((pid = waitpid(-1, &st, WNOHANG)) > 0) { |
| 562 | if(WCOREDUMP(st)) |
| 563 | flog(LOG_WARNING, "child process %i dumped core", pid); |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | static void sighandler(int sig) |
| 568 | { |
| 569 | if(sig == SIGHUP) |
| 570 | reload = 1; |
| 571 | } |
| 572 | |
| 573 | static void usage(FILE *out) |
| 574 | { |
| 575 | fprintf(out, "usage: patplex [-hN] CONFIGFILE\n"); |
| 576 | } |
| 577 | |
| 578 | int main(int argc, char **argv) |
| 579 | { |
| 580 | int c; |
| 581 | int nodef; |
| 582 | char *gcf, *lcf; |
| 583 | struct hthead *req; |
| 584 | int fd; |
| 585 | |
| 586 | nodef = 0; |
| 587 | while((c = getopt(argc, argv, "hN")) >= 0) { |
| 588 | switch(c) { |
| 589 | case 'h': |
| 590 | usage(stdout); |
| 591 | exit(0); |
| 592 | case 'N': |
| 593 | nodef = 1; |
| 594 | break; |
| 595 | default: |
| 596 | usage(stderr); |
| 597 | exit(1); |
| 598 | } |
| 599 | } |
| 600 | if(argc - optind < 1) { |
| 601 | usage(stderr); |
| 602 | exit(1); |
| 603 | } |
| 604 | if(!nodef) { |
| 605 | if((gcf = findstdconf("ashd/patplex.rc")) != NULL) { |
| 606 | gconfig = readconfig(gcf); |
| 607 | free(gcf); |
| 608 | } |
| 609 | } |
| 610 | if((strchr(lcf = argv[optind], '/')) == NULL) { |
| 611 | if((lcf = findstdconf(sprintf3("ashd/%s", lcf))) == NULL) { |
| 612 | flog(LOG_ERR, "could not find requested configuration file `%s'", argv[optind]); |
| 613 | exit(1); |
| 614 | } |
| 615 | } |
| 616 | if((lconfig = readconfig(lcf)) == NULL) { |
| 617 | flog(LOG_ERR, "could not read `%s'", lcf); |
| 618 | exit(1); |
| 619 | } |
| 620 | signal(SIGCHLD, chldhandler); |
| 621 | signal(SIGHUP, sighandler); |
| 622 | signal(SIGPIPE, sighandler); |
| 623 | while(1) { |
| 624 | if(reload) { |
| 625 | reloadconf(lcf); |
| 626 | reload = 0; |
| 627 | } |
| 628 | if((fd = recvreq(0, &req)) < 0) { |
| 629 | if(errno == EINTR) |
| 630 | continue; |
| 631 | if(errno != 0) |
| 632 | flog(LOG_ERR, "recvreq: %s", strerror(errno)); |
| 633 | break; |
| 634 | } |
| 635 | serve(req, fd); |
| 636 | freehthead(req); |
| 637 | close(fd); |
| 638 | } |
| 639 | return(0); |
| 640 | } |