| 1 | /* |
| 2 | * uhttpd - Tiny single-threaded httpd - Main component |
| 3 | * |
| 4 | * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org> |
| 5 | * |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | */ |
| 18 | |
| 19 | #define _XOPEN_SOURCE 500 /* crypt() */ |
| 20 | |
| 21 | #include "uhttpd.h" |
| 22 | #include "uhttpd-utils.h" |
| 23 | #include "uhttpd-file.h" |
| 24 | |
| 25 | #ifdef HAVE_CGI |
| 26 | #include "uhttpd-cgi.h" |
| 27 | #endif |
| 28 | |
| 29 | #ifdef HAVE_LUA |
| 30 | #include "uhttpd-lua.h" |
| 31 | #endif |
| 32 | |
| 33 | #ifdef HAVE_TLS |
| 34 | #include "uhttpd-tls.h" |
| 35 | #endif |
| 36 | |
| 37 | |
| 38 | const char * http_methods[] = { "GET", "POST", "HEAD", }; |
| 39 | const char * http_versions[] = { "HTTP/0.9", "HTTP/1.0", "HTTP/1.1", }; |
| 40 | |
| 41 | static int run = 1; |
| 42 | |
| 43 | static void uh_sigterm(int sig) |
| 44 | { |
| 45 | run = 0; |
| 46 | } |
| 47 | |
| 48 | static void uh_config_parse(struct config *conf) |
| 49 | { |
| 50 | FILE *c; |
| 51 | char line[512]; |
| 52 | char *col1 = NULL; |
| 53 | char *col2 = NULL; |
| 54 | char *eol = NULL; |
| 55 | |
| 56 | const char *path = conf->file ? conf->file : "/etc/httpd.conf"; |
| 57 | |
| 58 | |
| 59 | if ((c = fopen(path, "r")) != NULL) |
| 60 | { |
| 61 | memset(line, 0, sizeof(line)); |
| 62 | |
| 63 | while (fgets(line, sizeof(line) - 1, c)) |
| 64 | { |
| 65 | if ((line[0] == '/') && (strchr(line, ':') != NULL)) |
| 66 | { |
| 67 | if (!(col1 = strchr(line, ':')) || (*col1++ = 0) || |
| 68 | !(col2 = strchr(col1, ':')) || (*col2++ = 0) || |
| 69 | !(eol = strchr(col2, '\n')) || (*eol++ = 0)) |
| 70 | { |
| 71 | continue; |
| 72 | } |
| 73 | |
| 74 | if (!uh_auth_add(line, col1, col2)) |
| 75 | { |
| 76 | fprintf(stderr, |
| 77 | "Notice: No password set for user %s, ignoring " |
| 78 | "authentication on %s\n", col1, line |
| 79 | ); |
| 80 | } |
| 81 | } |
| 82 | else if (!strncmp(line, "I:", 2)) |
| 83 | { |
| 84 | if (!(col1 = strchr(line, ':')) || (*col1++ = 0) || |
| 85 | !(eol = strchr(col1, '\n')) || (*eol++ = 0)) |
| 86 | { |
| 87 | continue; |
| 88 | } |
| 89 | |
| 90 | conf->index_file = strdup(col1); |
| 91 | } |
| 92 | else if (!strncmp(line, "E404:", 5)) |
| 93 | { |
| 94 | if (!(col1 = strchr(line, ':')) || (*col1++ = 0) || |
| 95 | !(eol = strchr(col1, '\n')) || (*eol++ = 0)) |
| 96 | { |
| 97 | continue; |
| 98 | } |
| 99 | |
| 100 | conf->error_handler = strdup(col1); |
| 101 | } |
| 102 | #ifdef HAVE_CGI |
| 103 | else if ((line[0] == '*') && (strchr(line, ':') != NULL)) |
| 104 | { |
| 105 | if (!(col1 = strchr(line, '*')) || (*col1++ = 0) || |
| 106 | !(col2 = strchr(col1, ':')) || (*col2++ = 0) || |
| 107 | !(eol = strchr(col2, '\n')) || (*eol++ = 0)) |
| 108 | { |
| 109 | continue; |
| 110 | } |
| 111 | |
| 112 | if (!uh_interpreter_add(col1, col2)) |
| 113 | { |
| 114 | fprintf(stderr, |
| 115 | "Unable to add interpreter %s for extension %s: " |
| 116 | "Out of memory\n", col2, col1 |
| 117 | ); |
| 118 | } |
| 119 | } |
| 120 | #endif |
| 121 | } |
| 122 | |
| 123 | fclose(c); |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | static void uh_listener_cb(struct uloop_fd *u, unsigned int events); |
| 128 | |
| 129 | static int uh_socket_bind(const char *host, const char *port, |
| 130 | struct addrinfo *hints, int do_tls, |
| 131 | struct config *conf) |
| 132 | { |
| 133 | int sock = -1; |
| 134 | int yes = 1; |
| 135 | int status; |
| 136 | int bound = 0; |
| 137 | |
| 138 | int tcp_ka_idl, tcp_ka_int, tcp_ka_cnt; |
| 139 | |
| 140 | struct listener *l = NULL; |
| 141 | struct addrinfo *addrs = NULL, *p = NULL; |
| 142 | |
| 143 | if ((status = getaddrinfo(host, port, hints, &addrs)) != 0) |
| 144 | { |
| 145 | fprintf(stderr, "getaddrinfo(): %s\n", gai_strerror(status)); |
| 146 | } |
| 147 | |
| 148 | /* try to bind a new socket to each found address */ |
| 149 | for (p = addrs; p; p = p->ai_next) |
| 150 | { |
| 151 | /* get the socket */ |
| 152 | if ((sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == -1) |
| 153 | { |
| 154 | perror("socket()"); |
| 155 | goto error; |
| 156 | } |
| 157 | |
| 158 | /* "address already in use" */ |
| 159 | if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes))) |
| 160 | { |
| 161 | perror("setsockopt()"); |
| 162 | goto error; |
| 163 | } |
| 164 | |
| 165 | /* TCP keep-alive */ |
| 166 | if (conf->tcp_keepalive > 0) |
| 167 | { |
| 168 | tcp_ka_idl = 1; |
| 169 | tcp_ka_cnt = 3; |
| 170 | tcp_ka_int = conf->tcp_keepalive; |
| 171 | |
| 172 | if (setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, &yes, sizeof(yes)) || |
| 173 | setsockopt(sock, SOL_TCP, TCP_KEEPIDLE, &tcp_ka_idl, sizeof(tcp_ka_idl)) || |
| 174 | setsockopt(sock, SOL_TCP, TCP_KEEPINTVL, &tcp_ka_int, sizeof(tcp_ka_int)) || |
| 175 | setsockopt(sock, SOL_TCP, TCP_KEEPCNT, &tcp_ka_cnt, sizeof(tcp_ka_cnt))) |
| 176 | { |
| 177 | fprintf(stderr, "Notice: Unable to enable TCP keep-alive: %s\n", |
| 178 | strerror(errno)); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | /* required to get parallel v4 + v6 working */ |
| 183 | if (p->ai_family == AF_INET6) |
| 184 | { |
| 185 | if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &yes, sizeof(yes)) == -1) |
| 186 | { |
| 187 | perror("setsockopt()"); |
| 188 | goto error; |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | /* bind */ |
| 193 | if (bind(sock, p->ai_addr, p->ai_addrlen) == -1) |
| 194 | { |
| 195 | perror("bind()"); |
| 196 | goto error; |
| 197 | } |
| 198 | |
| 199 | /* listen */ |
| 200 | if (listen(sock, UH_LIMIT_CLIENTS) == -1) |
| 201 | { |
| 202 | perror("listen()"); |
| 203 | goto error; |
| 204 | } |
| 205 | |
| 206 | /* add listener to global list */ |
| 207 | if (!(l = uh_listener_add(sock, conf))) |
| 208 | { |
| 209 | fprintf(stderr, "uh_listener_add(): Failed to allocate memory\n"); |
| 210 | goto error; |
| 211 | } |
| 212 | |
| 213 | #ifdef HAVE_TLS |
| 214 | /* init TLS */ |
| 215 | l->tls = do_tls ? conf->tls : NULL; |
| 216 | #endif |
| 217 | |
| 218 | /* add socket to uloop */ |
| 219 | fd_cloexec(sock); |
| 220 | uh_ufd_add(&l->fd, uh_listener_cb, ULOOP_READ); |
| 221 | |
| 222 | bound++; |
| 223 | continue; |
| 224 | |
| 225 | error: |
| 226 | if (sock > 0) |
| 227 | close(sock); |
| 228 | } |
| 229 | |
| 230 | freeaddrinfo(addrs); |
| 231 | |
| 232 | return bound; |
| 233 | } |
| 234 | |
| 235 | static struct http_request * uh_http_header_parse(struct client *cl, |
| 236 | char *buffer, int buflen) |
| 237 | { |
| 238 | char *method = buffer; |
| 239 | char *path = NULL; |
| 240 | char *version = NULL; |
| 241 | |
| 242 | char *headers = NULL; |
| 243 | char *hdrname = NULL; |
| 244 | char *hdrdata = NULL; |
| 245 | |
| 246 | int i; |
| 247 | int hdrcount = 0; |
| 248 | |
| 249 | struct http_request *req = &cl->request; |
| 250 | |
| 251 | |
| 252 | /* terminate initial header line */ |
| 253 | if ((headers = strfind(buffer, buflen, "\r\n", 2)) != NULL) |
| 254 | { |
| 255 | buffer[buflen-1] = 0; |
| 256 | |
| 257 | *headers++ = 0; |
| 258 | *headers++ = 0; |
| 259 | |
| 260 | /* find request path */ |
| 261 | if ((path = strchr(buffer, ' ')) != NULL) |
| 262 | *path++ = 0; |
| 263 | |
| 264 | /* find http version */ |
| 265 | if ((path != NULL) && ((version = strchr(path, ' ')) != NULL)) |
| 266 | *version++ = 0; |
| 267 | |
| 268 | |
| 269 | /* check method */ |
| 270 | if (method && !strcmp(method, "GET")) |
| 271 | req->method = UH_HTTP_MSG_GET; |
| 272 | else if (method && !strcmp(method, "POST")) |
| 273 | req->method = UH_HTTP_MSG_POST; |
| 274 | else if (method && !strcmp(method, "HEAD")) |
| 275 | req->method = UH_HTTP_MSG_HEAD; |
| 276 | else |
| 277 | { |
| 278 | /* invalid method */ |
| 279 | uh_http_response(cl, 405, "Method Not Allowed"); |
| 280 | return NULL; |
| 281 | } |
| 282 | |
| 283 | /* check path */ |
| 284 | if (!path || !strlen(path)) |
| 285 | { |
| 286 | /* malformed request */ |
| 287 | uh_http_response(cl, 400, "Bad Request"); |
| 288 | return NULL; |
| 289 | } |
| 290 | else |
| 291 | { |
| 292 | req->url = path; |
| 293 | } |
| 294 | |
| 295 | /* check version */ |
| 296 | if (version && !strcmp(version, "HTTP/0.9")) |
| 297 | req->version = UH_HTTP_VER_0_9; |
| 298 | else if (version && !strcmp(version, "HTTP/1.0")) |
| 299 | req->version = UH_HTTP_VER_1_0; |
| 300 | else if (version && !strcmp(version, "HTTP/1.1")) |
| 301 | req->version = UH_HTTP_VER_1_1; |
| 302 | else |
| 303 | { |
| 304 | /* unsupported version */ |
| 305 | uh_http_response(cl, 400, "Bad Request"); |
| 306 | return NULL; |
| 307 | } |
| 308 | |
| 309 | D("SRV: %s %s %s\n", |
| 310 | http_methods[req->method], req->url, http_versions[req->version]); |
| 311 | |
| 312 | /* process header fields */ |
| 313 | for (i = (int)(headers - buffer); i < buflen; i++) |
| 314 | { |
| 315 | /* found eol and have name + value, push out header tuple */ |
| 316 | if (hdrname && hdrdata && (buffer[i] == '\r' || buffer[i] == '\n')) |
| 317 | { |
| 318 | buffer[i] = 0; |
| 319 | |
| 320 | /* store */ |
| 321 | if ((hdrcount + 1) < array_size(req->headers)) |
| 322 | { |
| 323 | D("SRV: HTTP: %s: %s\n", hdrname, hdrdata); |
| 324 | |
| 325 | req->headers[hdrcount++] = hdrname; |
| 326 | req->headers[hdrcount++] = hdrdata; |
| 327 | |
| 328 | hdrname = hdrdata = NULL; |
| 329 | } |
| 330 | |
| 331 | /* too large */ |
| 332 | else |
| 333 | { |
| 334 | D("SRV: HTTP: header too big (too many headers)\n"); |
| 335 | uh_http_response(cl, 413, "Request Entity Too Large"); |
| 336 | return NULL; |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | /* have name but no value and found a colon, start of value */ |
| 341 | else if (hdrname && !hdrdata && |
| 342 | ((i+1) < buflen) && (buffer[i] == ':')) |
| 343 | { |
| 344 | buffer[i] = 0; |
| 345 | hdrdata = &buffer[i+1]; |
| 346 | |
| 347 | while ((hdrdata + 1) < (buffer + buflen) && *hdrdata == ' ') |
| 348 | hdrdata++; |
| 349 | } |
| 350 | |
| 351 | /* have no name and found [A-Za-z], start of name */ |
| 352 | else if (!hdrname && isalpha(buffer[i])) |
| 353 | { |
| 354 | hdrname = &buffer[i]; |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | /* valid enough */ |
| 359 | req->redirect_status = 200; |
| 360 | return req; |
| 361 | } |
| 362 | |
| 363 | /* Malformed request */ |
| 364 | uh_http_response(cl, 400, "Bad Request"); |
| 365 | return NULL; |
| 366 | } |
| 367 | |
| 368 | |
| 369 | static struct http_request * uh_http_header_recv(struct client *cl) |
| 370 | { |
| 371 | char *bufptr = cl->httpbuf.buf; |
| 372 | char *idxptr = NULL; |
| 373 | |
| 374 | ssize_t blen = sizeof(cl->httpbuf.buf)-1; |
| 375 | ssize_t rlen = 0; |
| 376 | |
| 377 | memset(bufptr, 0, sizeof(cl->httpbuf.buf)); |
| 378 | |
| 379 | while (blen > 0) |
| 380 | { |
| 381 | /* receive data */ |
| 382 | ensure_out(rlen = uh_tcp_recv(cl, bufptr, blen)); |
| 383 | D("SRV: Client(%d) peek(%d) = %d\n", cl->fd.fd, blen, rlen); |
| 384 | |
| 385 | if (rlen <= 0) |
| 386 | { |
| 387 | D("SRV: Client(%d) dead [%s]\n", cl->fd.fd, strerror(errno)); |
| 388 | return NULL; |
| 389 | } |
| 390 | |
| 391 | blen -= rlen; |
| 392 | bufptr += rlen; |
| 393 | |
| 394 | if ((idxptr = strfind(cl->httpbuf.buf, sizeof(cl->httpbuf.buf), |
| 395 | "\r\n\r\n", 4))) |
| 396 | { |
| 397 | /* header read complete ... */ |
| 398 | cl->httpbuf.ptr = idxptr + 4; |
| 399 | cl->httpbuf.len = bufptr - cl->httpbuf.ptr; |
| 400 | |
| 401 | return uh_http_header_parse(cl, cl->httpbuf.buf, |
| 402 | (cl->httpbuf.ptr - cl->httpbuf.buf)); |
| 403 | } |
| 404 | } |
| 405 | |
| 406 | /* request entity too large */ |
| 407 | D("SRV: HTTP: header too big (buffer exceeded)\n"); |
| 408 | uh_http_response(cl, 413, "Request Entity Too Large"); |
| 409 | |
| 410 | out: |
| 411 | return NULL; |
| 412 | } |
| 413 | |
| 414 | #if defined(HAVE_LUA) || defined(HAVE_CGI) |
| 415 | static int uh_path_match(const char *prefix, const char *url) |
| 416 | { |
| 417 | if ((strstr(url, prefix) == url) && |
| 418 | ((prefix[strlen(prefix)-1] == '/') || |
| 419 | (strlen(url) == strlen(prefix)) || |
| 420 | (url[strlen(prefix)] == '/'))) |
| 421 | { |
| 422 | return 1; |
| 423 | } |
| 424 | |
| 425 | return 0; |
| 426 | } |
| 427 | #endif |
| 428 | |
| 429 | static bool uh_dispatch_request(struct client *cl, struct http_request *req) |
| 430 | { |
| 431 | struct path_info *pin; |
| 432 | struct interpreter *ipr = NULL; |
| 433 | struct config *conf = cl->server->conf; |
| 434 | |
| 435 | #ifdef HAVE_LUA |
| 436 | /* Lua request? */ |
| 437 | if (conf->lua_state && |
| 438 | uh_path_match(conf->lua_prefix, req->url)) |
| 439 | { |
| 440 | return conf->lua_request(cl, conf->lua_state); |
| 441 | } |
| 442 | else |
| 443 | #endif |
| 444 | |
| 445 | #ifdef HAVE_UBUS |
| 446 | /* ubus request? */ |
| 447 | if (conf->ubus_state && |
| 448 | uh_path_match(conf->ubus_prefix, req->url)) |
| 449 | { |
| 450 | return conf->ubus_request(cl, conf->ubus_state); |
| 451 | } |
| 452 | else |
| 453 | #endif |
| 454 | |
| 455 | /* dispatch request */ |
| 456 | if ((pin = uh_path_lookup(cl, req->url)) != NULL) |
| 457 | { |
| 458 | /* auth ok? */ |
| 459 | if (!pin->redirected && uh_auth_check(cl, req, pin)) |
| 460 | { |
| 461 | #ifdef HAVE_CGI |
| 462 | if (uh_path_match(conf->cgi_prefix, pin->name) || |
| 463 | (ipr = uh_interpreter_lookup(pin->phys)) != NULL) |
| 464 | { |
| 465 | return uh_cgi_request(cl, pin, ipr); |
| 466 | } |
| 467 | #endif |
| 468 | return uh_file_request(cl, pin); |
| 469 | } |
| 470 | } |
| 471 | |
| 472 | /* 404 - pass 1 */ |
| 473 | else |
| 474 | { |
| 475 | /* Try to invoke an error handler */ |
| 476 | if ((pin = uh_path_lookup(cl, conf->error_handler)) != NULL) |
| 477 | { |
| 478 | /* auth ok? */ |
| 479 | if (uh_auth_check(cl, req, pin)) |
| 480 | { |
| 481 | req->redirect_status = 404; |
| 482 | #ifdef HAVE_CGI |
| 483 | if (uh_path_match(conf->cgi_prefix, pin->name) || |
| 484 | (ipr = uh_interpreter_lookup(pin->phys)) != NULL) |
| 485 | { |
| 486 | return uh_cgi_request(cl, pin, ipr); |
| 487 | } |
| 488 | #endif |
| 489 | return uh_file_request(cl, pin); |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | /* 404 - pass 2 */ |
| 494 | else |
| 495 | { |
| 496 | uh_http_sendhf(cl, 404, "Not Found", "No such file or directory"); |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | return false; |
| 501 | } |
| 502 | |
| 503 | static void uh_socket_cb(struct uloop_fd *u, unsigned int events); |
| 504 | |
| 505 | static void uh_listener_cb(struct uloop_fd *u, unsigned int events) |
| 506 | { |
| 507 | int new_fd; |
| 508 | struct listener *serv; |
| 509 | struct client *cl; |
| 510 | struct config *conf; |
| 511 | |
| 512 | struct sockaddr_in6 sa; |
| 513 | socklen_t sl = sizeof(sa); |
| 514 | |
| 515 | serv = container_of(u, struct listener, fd); |
| 516 | conf = serv->conf; |
| 517 | |
| 518 | /* defer client if maximum number of requests is exceeded */ |
| 519 | if (serv->n_clients >= conf->max_requests) |
| 520 | return; |
| 521 | |
| 522 | /* handle new connections */ |
| 523 | if ((new_fd = accept(u->fd, (struct sockaddr *)&sa, &sl)) != -1) |
| 524 | { |
| 525 | D("SRV: Server(%d) accept => Client(%d)\n", u->fd, new_fd); |
| 526 | |
| 527 | /* add to global client list */ |
| 528 | if ((cl = uh_client_add(new_fd, serv, &sa)) != NULL) |
| 529 | { |
| 530 | /* add client socket to global fdset */ |
| 531 | uh_ufd_add(&cl->fd, uh_socket_cb, ULOOP_READ); |
| 532 | fd_cloexec(cl->fd.fd); |
| 533 | |
| 534 | #ifdef HAVE_TLS |
| 535 | /* setup client tls context */ |
| 536 | if (conf->tls) |
| 537 | { |
| 538 | if (conf->tls_accept(cl) < 1) |
| 539 | { |
| 540 | D("SRV: Client(%d) SSL handshake failed, drop\n", new_fd); |
| 541 | |
| 542 | /* remove from global client list */ |
| 543 | uh_client_remove(cl); |
| 544 | return; |
| 545 | } |
| 546 | } |
| 547 | #endif |
| 548 | } |
| 549 | |
| 550 | /* insufficient resources */ |
| 551 | else |
| 552 | { |
| 553 | fprintf(stderr, "uh_client_add(): Cannot allocate memory\n"); |
| 554 | close(new_fd); |
| 555 | } |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | static void uh_client_cb(struct client *cl, unsigned int events); |
| 560 | |
| 561 | static void uh_rpipe_cb(struct uloop_fd *u, unsigned int events) |
| 562 | { |
| 563 | struct client *cl = container_of(u, struct client, rpipe); |
| 564 | |
| 565 | D("SRV: Client(%d) rpipe readable\n", cl->fd.fd); |
| 566 | |
| 567 | uh_client_cb(cl, ULOOP_WRITE); |
| 568 | } |
| 569 | |
| 570 | static void uh_socket_cb(struct uloop_fd *u, unsigned int events) |
| 571 | { |
| 572 | struct client *cl = container_of(u, struct client, fd); |
| 573 | |
| 574 | D("SRV: Client(%d) socket readable\n", cl->fd.fd); |
| 575 | |
| 576 | uh_client_cb(cl, ULOOP_READ); |
| 577 | } |
| 578 | |
| 579 | static void uh_child_cb(struct uloop_process *p, int rv) |
| 580 | { |
| 581 | struct client *cl = container_of(p, struct client, proc); |
| 582 | |
| 583 | D("SRV: Client(%d) child(%d) dead\n", cl->fd.fd, cl->proc.pid); |
| 584 | |
| 585 | uh_client_cb(cl, ULOOP_READ | ULOOP_WRITE); |
| 586 | } |
| 587 | |
| 588 | static void uh_kill9_cb(struct uloop_timeout *t) |
| 589 | { |
| 590 | struct client *cl = container_of(t, struct client, timeout); |
| 591 | |
| 592 | if (!kill(cl->proc.pid, 0)) |
| 593 | { |
| 594 | D("SRV: Client(%d) child(%d) kill(SIGKILL)...\n", |
| 595 | cl->fd.fd, cl->proc.pid); |
| 596 | |
| 597 | kill(cl->proc.pid, SIGKILL); |
| 598 | } |
| 599 | } |
| 600 | |
| 601 | static void uh_timeout_cb(struct uloop_timeout *t) |
| 602 | { |
| 603 | struct client *cl = container_of(t, struct client, timeout); |
| 604 | |
| 605 | D("SRV: Client(%d) child(%d) timed out\n", cl->fd.fd, cl->proc.pid); |
| 606 | |
| 607 | if (!kill(cl->proc.pid, 0)) |
| 608 | { |
| 609 | D("SRV: Client(%d) child(%d) kill(SIGTERM)...\n", |
| 610 | cl->fd.fd, cl->proc.pid); |
| 611 | |
| 612 | kill(cl->proc.pid, SIGTERM); |
| 613 | |
| 614 | cl->timeout.cb = uh_kill9_cb; |
| 615 | uloop_timeout_set(&cl->timeout, 1000); |
| 616 | } |
| 617 | } |
| 618 | |
| 619 | static void uh_client_cb(struct client *cl, unsigned int events) |
| 620 | { |
| 621 | int i; |
| 622 | struct config *conf; |
| 623 | struct http_request *req; |
| 624 | |
| 625 | conf = cl->server->conf; |
| 626 | |
| 627 | D("SRV: Client(%d) enter callback\n", cl->fd.fd); |
| 628 | |
| 629 | /* undispatched yet */ |
| 630 | if (!cl->dispatched) |
| 631 | { |
| 632 | /* we have no headers yet and this was a write event, ignore... */ |
| 633 | if (!(events & ULOOP_READ)) |
| 634 | { |
| 635 | D("SRV: Client(%d) ignoring write event before headers\n", cl->fd.fd); |
| 636 | return; |
| 637 | } |
| 638 | |
| 639 | /* attempt to receive and parse headers */ |
| 640 | if (!(req = uh_http_header_recv(cl))) |
| 641 | { |
| 642 | D("SRV: Client(%d) failed to receive header\n", cl->fd.fd); |
| 643 | uh_client_shutdown(cl); |
| 644 | return; |
| 645 | } |
| 646 | |
| 647 | /* process expect headers */ |
| 648 | foreach_header(i, req->headers) |
| 649 | { |
| 650 | if (strcasecmp(req->headers[i], "Expect")) |
| 651 | continue; |
| 652 | |
| 653 | if (strcasecmp(req->headers[i+1], "100-continue")) |
| 654 | { |
| 655 | D("SRV: Client(%d) unknown expect header (%s)\n", |
| 656 | cl->fd.fd, req->headers[i+1]); |
| 657 | |
| 658 | uh_http_response(cl, 417, "Precondition Failed"); |
| 659 | uh_client_shutdown(cl); |
| 660 | return; |
| 661 | } |
| 662 | else |
| 663 | { |
| 664 | D("SRV: Client(%d) sending HTTP/1.1 100 Continue\n", cl->fd.fd); |
| 665 | |
| 666 | uh_http_sendf(cl, NULL, "HTTP/1.1 100 Continue\r\n\r\n"); |
| 667 | cl->httpbuf.len = 0; /* client will re-send the body */ |
| 668 | break; |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | /* RFC1918 filtering */ |
| 673 | if (conf->rfc1918_filter && |
| 674 | sa_rfc1918(&cl->peeraddr) && !sa_rfc1918(&cl->servaddr)) |
| 675 | { |
| 676 | uh_http_sendhf(cl, 403, "Forbidden", |
| 677 | "Rejected request from RFC1918 IP " |
| 678 | "to public server address"); |
| 679 | |
| 680 | uh_client_shutdown(cl); |
| 681 | return; |
| 682 | } |
| 683 | |
| 684 | /* dispatch request */ |
| 685 | if (!uh_dispatch_request(cl, req)) |
| 686 | { |
| 687 | D("SRV: Client(%d) failed to dispach request\n", cl->fd.fd); |
| 688 | uh_client_shutdown(cl); |
| 689 | return; |
| 690 | } |
| 691 | |
| 692 | /* request handler spawned a pipe, register handler */ |
| 693 | if (cl->rpipe.fd > -1) |
| 694 | { |
| 695 | D("SRV: Client(%d) pipe(%d) spawned\n", cl->fd.fd, cl->rpipe.fd); |
| 696 | |
| 697 | uh_ufd_add(&cl->rpipe, uh_rpipe_cb, ULOOP_READ); |
| 698 | } |
| 699 | |
| 700 | /* request handler spawned a child, register handler */ |
| 701 | if (cl->proc.pid) |
| 702 | { |
| 703 | D("SRV: Client(%d) child(%d) spawned\n", cl->fd.fd, cl->proc.pid); |
| 704 | |
| 705 | cl->proc.cb = uh_child_cb; |
| 706 | uloop_process_add(&cl->proc); |
| 707 | |
| 708 | cl->timeout.cb = uh_timeout_cb; |
| 709 | uloop_timeout_set(&cl->timeout, conf->script_timeout * 1000); |
| 710 | } |
| 711 | |
| 712 | /* header processing complete */ |
| 713 | D("SRV: Client(%d) dispatched\n", cl->fd.fd); |
| 714 | cl->dispatched = true; |
| 715 | } |
| 716 | |
| 717 | if (!cl->cb(cl)) |
| 718 | { |
| 719 | D("SRV: Client(%d) response callback signalized EOF\n", cl->fd.fd); |
| 720 | uh_client_shutdown(cl); |
| 721 | return; |
| 722 | } |
| 723 | } |
| 724 | |
| 725 | #ifdef HAVE_TLS |
| 726 | static inline int uh_inittls(struct config *conf) |
| 727 | { |
| 728 | /* library handle */ |
| 729 | void *lib; |
| 730 | |
| 731 | /* already loaded */ |
| 732 | if (conf->tls != NULL) |
| 733 | return 0; |
| 734 | |
| 735 | /* load TLS plugin */ |
| 736 | if (!(lib = dlopen("uhttpd_tls.so", RTLD_LAZY | RTLD_GLOBAL))) |
| 737 | { |
| 738 | fprintf(stderr, |
| 739 | "Notice: Unable to load TLS plugin - disabling SSL support! " |
| 740 | "(Reason: %s)\n", dlerror() |
| 741 | ); |
| 742 | |
| 743 | return 1; |
| 744 | } |
| 745 | else |
| 746 | { |
| 747 | /* resolve functions */ |
| 748 | if (!(conf->tls_init = dlsym(lib, "uh_tls_ctx_init")) || |
| 749 | !(conf->tls_cert = dlsym(lib, "uh_tls_ctx_cert")) || |
| 750 | !(conf->tls_key = dlsym(lib, "uh_tls_ctx_key")) || |
| 751 | !(conf->tls_free = dlsym(lib, "uh_tls_ctx_free")) || |
| 752 | !(conf->tls_accept = dlsym(lib, "uh_tls_client_accept")) || |
| 753 | !(conf->tls_close = dlsym(lib, "uh_tls_client_close")) || |
| 754 | !(conf->tls_recv = dlsym(lib, "uh_tls_client_recv")) || |
| 755 | !(conf->tls_send = dlsym(lib, "uh_tls_client_send"))) |
| 756 | { |
| 757 | fprintf(stderr, |
| 758 | "Error: Failed to lookup required symbols " |
| 759 | "in TLS plugin: %s\n", dlerror() |
| 760 | ); |
| 761 | exit(1); |
| 762 | } |
| 763 | |
| 764 | /* init SSL context */ |
| 765 | if (!(conf->tls = conf->tls_init())) |
| 766 | { |
| 767 | fprintf(stderr, "Error: Failed to initalize SSL context\n"); |
| 768 | exit(1); |
| 769 | } |
| 770 | } |
| 771 | |
| 772 | return 0; |
| 773 | } |
| 774 | #endif |
| 775 | |
| 776 | int main (int argc, char **argv) |
| 777 | { |
| 778 | /* working structs */ |
| 779 | struct addrinfo hints; |
| 780 | struct sigaction sa; |
| 781 | struct config conf; |
| 782 | |
| 783 | /* maximum file descriptor number */ |
| 784 | int cur_fd = 0; |
| 785 | |
| 786 | #ifdef HAVE_TLS |
| 787 | int tls = 0; |
| 788 | int keys = 0; |
| 789 | #endif |
| 790 | |
| 791 | int bound = 0; |
| 792 | int nofork = 0; |
| 793 | |
| 794 | /* args */ |
| 795 | int opt; |
| 796 | char addr[128]; |
| 797 | char *port = NULL; |
| 798 | |
| 799 | #if defined(HAVE_LUA) || defined(HAVE_TLS) || defined(HAVE_UBUS) |
| 800 | /* library handle */ |
| 801 | void *lib; |
| 802 | #endif |
| 803 | |
| 804 | /* handle SIGPIPE, SIGINT, SIGTERM */ |
| 805 | sa.sa_flags = 0; |
| 806 | sigemptyset(&sa.sa_mask); |
| 807 | |
| 808 | sa.sa_handler = SIG_IGN; |
| 809 | sigaction(SIGPIPE, &sa, NULL); |
| 810 | |
| 811 | sa.sa_handler = uh_sigterm; |
| 812 | sigaction(SIGINT, &sa, NULL); |
| 813 | sigaction(SIGTERM, &sa, NULL); |
| 814 | |
| 815 | /* prepare addrinfo hints */ |
| 816 | memset(&hints, 0, sizeof(hints)); |
| 817 | hints.ai_family = AF_UNSPEC; |
| 818 | hints.ai_socktype = SOCK_STREAM; |
| 819 | hints.ai_flags = AI_PASSIVE; |
| 820 | |
| 821 | /* parse args */ |
| 822 | memset(&conf, 0, sizeof(conf)); |
| 823 | |
| 824 | uloop_init(); |
| 825 | |
| 826 | while ((opt = getopt(argc, argv, |
| 827 | "fSDRC:K:E:I:p:s:h:c:l:L:d:r:m:n:x:i:t:T:A:u:U:")) > 0) |
| 828 | { |
| 829 | switch(opt) |
| 830 | { |
| 831 | /* [addr:]port */ |
| 832 | case 'p': |
| 833 | case 's': |
| 834 | memset(addr, 0, sizeof(addr)); |
| 835 | |
| 836 | if ((port = strrchr(optarg, ':')) != NULL) |
| 837 | { |
| 838 | if ((optarg[0] == '[') && (port > optarg) && (port[-1] == ']')) |
| 839 | memcpy(addr, optarg + 1, |
| 840 | min(sizeof(addr), (int)(port - optarg) - 2)); |
| 841 | else |
| 842 | memcpy(addr, optarg, |
| 843 | min(sizeof(addr), (int)(port - optarg))); |
| 844 | |
| 845 | port++; |
| 846 | } |
| 847 | else |
| 848 | { |
| 849 | port = optarg; |
| 850 | } |
| 851 | |
| 852 | #ifdef HAVE_TLS |
| 853 | if (opt == 's') |
| 854 | { |
| 855 | if (uh_inittls(&conf)) |
| 856 | { |
| 857 | fprintf(stderr, |
| 858 | "Notice: TLS support is disabled, " |
| 859 | "ignoring '-s %s'\n", optarg |
| 860 | ); |
| 861 | continue; |
| 862 | } |
| 863 | |
| 864 | tls = 1; |
| 865 | } |
| 866 | #endif |
| 867 | |
| 868 | /* bind sockets */ |
| 869 | bound += uh_socket_bind(addr[0] ? addr : NULL, port, &hints, |
| 870 | (opt == 's'), &conf); |
| 871 | break; |
| 872 | |
| 873 | #ifdef HAVE_TLS |
| 874 | /* certificate */ |
| 875 | case 'C': |
| 876 | if (!uh_inittls(&conf)) |
| 877 | { |
| 878 | if (conf.tls_cert(conf.tls, optarg) < 1) |
| 879 | { |
| 880 | fprintf(stderr, |
| 881 | "Error: Invalid certificate file given\n"); |
| 882 | exit(1); |
| 883 | } |
| 884 | |
| 885 | keys++; |
| 886 | } |
| 887 | |
| 888 | break; |
| 889 | |
| 890 | /* key */ |
| 891 | case 'K': |
| 892 | if (!uh_inittls(&conf)) |
| 893 | { |
| 894 | if (conf.tls_key(conf.tls, optarg) < 1) |
| 895 | { |
| 896 | fprintf(stderr, |
| 897 | "Error: Invalid private key file given\n"); |
| 898 | exit(1); |
| 899 | } |
| 900 | |
| 901 | keys++; |
| 902 | } |
| 903 | |
| 904 | break; |
| 905 | #else |
| 906 | case 'C': |
| 907 | case 'K': |
| 908 | fprintf(stderr, |
| 909 | "Notice: TLS support not compiled, ignoring -%c\n", |
| 910 | opt); |
| 911 | break; |
| 912 | #endif |
| 913 | |
| 914 | /* docroot */ |
| 915 | case 'h': |
| 916 | if (! realpath(optarg, conf.docroot)) |
| 917 | { |
| 918 | fprintf(stderr, "Error: Invalid directory %s: %s\n", |
| 919 | optarg, strerror(errno)); |
| 920 | exit(1); |
| 921 | } |
| 922 | break; |
| 923 | |
| 924 | /* error handler */ |
| 925 | case 'E': |
| 926 | if ((strlen(optarg) == 0) || (optarg[0] != '/')) |
| 927 | { |
| 928 | fprintf(stderr, "Error: Invalid error handler: %s\n", |
| 929 | optarg); |
| 930 | exit(1); |
| 931 | } |
| 932 | conf.error_handler = optarg; |
| 933 | break; |
| 934 | |
| 935 | /* index file */ |
| 936 | case 'I': |
| 937 | if ((strlen(optarg) == 0) || (optarg[0] == '/')) |
| 938 | { |
| 939 | fprintf(stderr, "Error: Invalid index page: %s\n", |
| 940 | optarg); |
| 941 | exit(1); |
| 942 | } |
| 943 | conf.index_file = optarg; |
| 944 | break; |
| 945 | |
| 946 | /* don't follow symlinks */ |
| 947 | case 'S': |
| 948 | conf.no_symlinks = 1; |
| 949 | break; |
| 950 | |
| 951 | /* don't list directories */ |
| 952 | case 'D': |
| 953 | conf.no_dirlists = 1; |
| 954 | break; |
| 955 | |
| 956 | case 'R': |
| 957 | conf.rfc1918_filter = 1; |
| 958 | break; |
| 959 | |
| 960 | case 'n': |
| 961 | conf.max_requests = atoi(optarg); |
| 962 | break; |
| 963 | |
| 964 | #ifdef HAVE_CGI |
| 965 | /* cgi prefix */ |
| 966 | case 'x': |
| 967 | conf.cgi_prefix = optarg; |
| 968 | break; |
| 969 | |
| 970 | /* interpreter */ |
| 971 | case 'i': |
| 972 | if ((optarg[0] == '.') && (port = strchr(optarg, '='))) |
| 973 | { |
| 974 | *port++ = 0; |
| 975 | uh_interpreter_add(optarg, port); |
| 976 | } |
| 977 | else |
| 978 | { |
| 979 | fprintf(stderr, "Error: Invalid interpreter: %s\n", |
| 980 | optarg); |
| 981 | exit(1); |
| 982 | } |
| 983 | break; |
| 984 | #else |
| 985 | case 'x': |
| 986 | case 'i': |
| 987 | fprintf(stderr, |
| 988 | "Notice: CGI support not compiled, ignoring -%c\n", |
| 989 | opt); |
| 990 | break; |
| 991 | #endif |
| 992 | |
| 993 | #ifdef HAVE_LUA |
| 994 | /* lua prefix */ |
| 995 | case 'l': |
| 996 | conf.lua_prefix = optarg; |
| 997 | break; |
| 998 | |
| 999 | /* lua handler */ |
| 1000 | case 'L': |
| 1001 | conf.lua_handler = optarg; |
| 1002 | break; |
| 1003 | #else |
| 1004 | case 'l': |
| 1005 | case 'L': |
| 1006 | fprintf(stderr, |
| 1007 | "Notice: Lua support not compiled, ignoring -%c\n", |
| 1008 | opt); |
| 1009 | break; |
| 1010 | #endif |
| 1011 | |
| 1012 | #ifdef HAVE_UBUS |
| 1013 | /* ubus prefix */ |
| 1014 | case 'u': |
| 1015 | conf.ubus_prefix = optarg; |
| 1016 | break; |
| 1017 | |
| 1018 | /* ubus socket */ |
| 1019 | case 'U': |
| 1020 | conf.ubus_socket = optarg; |
| 1021 | break; |
| 1022 | #else |
| 1023 | case 'u': |
| 1024 | case 'U': |
| 1025 | fprintf(stderr, |
| 1026 | "Notice: UBUS support not compiled, ignoring -%c\n", |
| 1027 | opt); |
| 1028 | break; |
| 1029 | #endif |
| 1030 | |
| 1031 | #if defined(HAVE_CGI) || defined(HAVE_LUA) |
| 1032 | /* script timeout */ |
| 1033 | case 't': |
| 1034 | conf.script_timeout = atoi(optarg); |
| 1035 | break; |
| 1036 | #endif |
| 1037 | |
| 1038 | /* network timeout */ |
| 1039 | case 'T': |
| 1040 | conf.network_timeout = atoi(optarg); |
| 1041 | break; |
| 1042 | |
| 1043 | /* tcp keep-alive */ |
| 1044 | case 'A': |
| 1045 | conf.tcp_keepalive = atoi(optarg); |
| 1046 | break; |
| 1047 | |
| 1048 | /* no fork */ |
| 1049 | case 'f': |
| 1050 | nofork = 1; |
| 1051 | break; |
| 1052 | |
| 1053 | /* urldecode */ |
| 1054 | case 'd': |
| 1055 | if ((port = malloc(strlen(optarg)+1)) != NULL) |
| 1056 | { |
| 1057 | /* "decode" plus to space to retain compat */ |
| 1058 | for (opt = 0; optarg[opt]; opt++) |
| 1059 | if (optarg[opt] == '+') |
| 1060 | optarg[opt] = ' '; |
| 1061 | /* opt now contains strlen(optarg) -- no need to re-scan */ |
| 1062 | memset(port, 0, opt+1); |
| 1063 | if (uh_urldecode(port, opt, optarg, opt) < 0) |
| 1064 | fprintf(stderr, "uhttpd: invalid encoding\n"); |
| 1065 | |
| 1066 | printf("%s", port); |
| 1067 | free(port); |
| 1068 | exit(0); |
| 1069 | } |
| 1070 | break; |
| 1071 | |
| 1072 | /* basic auth realm */ |
| 1073 | case 'r': |
| 1074 | conf.realm = optarg; |
| 1075 | break; |
| 1076 | |
| 1077 | /* md5 crypt */ |
| 1078 | case 'm': |
| 1079 | printf("%s\n", crypt(optarg, "$1$")); |
| 1080 | exit(0); |
| 1081 | break; |
| 1082 | |
| 1083 | /* config file */ |
| 1084 | case 'c': |
| 1085 | conf.file = optarg; |
| 1086 | break; |
| 1087 | |
| 1088 | default: |
| 1089 | fprintf(stderr, |
| 1090 | "Usage: %s -p [addr:]port [-h docroot]\n" |
| 1091 | " -f Do not fork to background\n" |
| 1092 | " -c file Configuration file, default is '/etc/httpd.conf'\n" |
| 1093 | " -p [addr:]port Bind to specified address and port, multiple allowed\n" |
| 1094 | #ifdef HAVE_TLS |
| 1095 | " -s [addr:]port Like -p but provide HTTPS on this port\n" |
| 1096 | " -C file ASN.1 server certificate file\n" |
| 1097 | " -K file ASN.1 server private key file\n" |
| 1098 | #endif |
| 1099 | " -h directory Specify the document root, default is '.'\n" |
| 1100 | " -E string Use given virtual URL as 404 error handler\n" |
| 1101 | " -I string Use given filename as index page for directories\n" |
| 1102 | " -S Do not follow symbolic links outside of the docroot\n" |
| 1103 | " -D Do not allow directory listings, send 403 instead\n" |
| 1104 | " -R Enable RFC1918 filter\n" |
| 1105 | " -n count Maximum allowed number of concurrent requests\n" |
| 1106 | #ifdef HAVE_LUA |
| 1107 | " -l string URL prefix for Lua handler, default is '/lua'\n" |
| 1108 | " -L file Lua handler script, omit to disable Lua\n" |
| 1109 | #endif |
| 1110 | #ifdef HAVE_UBUS |
| 1111 | " -u string URL prefix for HTTP/JSON handler\n" |
| 1112 | " -U file Override ubus socket path\n" |
| 1113 | #endif |
| 1114 | #ifdef HAVE_CGI |
| 1115 | " -x string URL prefix for CGI handler, default is '/cgi-bin'\n" |
| 1116 | " -i .ext=path Use interpreter at path for files with the given extension\n" |
| 1117 | #endif |
| 1118 | #if defined(HAVE_CGI) || defined(HAVE_LUA) || defined(HAVE_UBUS) |
| 1119 | " -t seconds CGI, Lua and UBUS script timeout in seconds, default is 60\n" |
| 1120 | #endif |
| 1121 | " -T seconds Network timeout in seconds, default is 30\n" |
| 1122 | " -d string URL decode given string\n" |
| 1123 | " -r string Specify basic auth realm\n" |
| 1124 | " -m string MD5 crypt given string\n" |
| 1125 | "\n", argv[0] |
| 1126 | ); |
| 1127 | |
| 1128 | exit(1); |
| 1129 | } |
| 1130 | } |
| 1131 | |
| 1132 | #ifdef HAVE_TLS |
| 1133 | if ((tls == 1) && (keys < 2)) |
| 1134 | { |
| 1135 | fprintf(stderr, "Error: Missing private key or certificate file\n"); |
| 1136 | exit(1); |
| 1137 | } |
| 1138 | #endif |
| 1139 | |
| 1140 | if (bound < 1) |
| 1141 | { |
| 1142 | fprintf(stderr, "Error: No sockets bound, unable to continue\n"); |
| 1143 | exit(1); |
| 1144 | } |
| 1145 | |
| 1146 | /* default docroot */ |
| 1147 | if (!conf.docroot[0] && !realpath(".", conf.docroot)) |
| 1148 | { |
| 1149 | fprintf(stderr, "Error: Can not determine default document root: %s\n", |
| 1150 | strerror(errno)); |
| 1151 | exit(1); |
| 1152 | } |
| 1153 | |
| 1154 | /* default realm */ |
| 1155 | if (!conf.realm) |
| 1156 | conf.realm = "Protected Area"; |
| 1157 | |
| 1158 | /* config file */ |
| 1159 | uh_config_parse(&conf); |
| 1160 | |
| 1161 | /* default max requests */ |
| 1162 | if (conf.max_requests <= 0) |
| 1163 | conf.max_requests = 3; |
| 1164 | |
| 1165 | /* default network timeout */ |
| 1166 | if (conf.network_timeout <= 0) |
| 1167 | conf.network_timeout = 30; |
| 1168 | |
| 1169 | #if defined(HAVE_CGI) || defined(HAVE_LUA) || defined(HAVE_UBUS) |
| 1170 | /* default script timeout */ |
| 1171 | if (conf.script_timeout <= 0) |
| 1172 | conf.script_timeout = 60; |
| 1173 | #endif |
| 1174 | |
| 1175 | #ifdef HAVE_CGI |
| 1176 | /* default cgi prefix */ |
| 1177 | if (!conf.cgi_prefix) |
| 1178 | conf.cgi_prefix = "/cgi-bin"; |
| 1179 | #endif |
| 1180 | |
| 1181 | #ifdef HAVE_LUA |
| 1182 | /* load Lua plugin */ |
| 1183 | if (!(lib = dlopen("uhttpd_lua.so", RTLD_LAZY | RTLD_GLOBAL))) |
| 1184 | { |
| 1185 | fprintf(stderr, |
| 1186 | "Notice: Unable to load Lua plugin - disabling Lua support! " |
| 1187 | "(Reason: %s)\n", dlerror()); |
| 1188 | } |
| 1189 | else |
| 1190 | { |
| 1191 | /* resolve functions */ |
| 1192 | if (!(conf.lua_init = dlsym(lib, "uh_lua_init")) || |
| 1193 | !(conf.lua_close = dlsym(lib, "uh_lua_close")) || |
| 1194 | !(conf.lua_request = dlsym(lib, "uh_lua_request"))) |
| 1195 | { |
| 1196 | fprintf(stderr, |
| 1197 | "Error: Failed to lookup required symbols " |
| 1198 | "in Lua plugin: %s\n", dlerror() |
| 1199 | ); |
| 1200 | exit(1); |
| 1201 | } |
| 1202 | |
| 1203 | /* init Lua runtime if handler is specified */ |
| 1204 | if (conf.lua_handler) |
| 1205 | { |
| 1206 | /* default lua prefix */ |
| 1207 | if (!conf.lua_prefix) |
| 1208 | conf.lua_prefix = "/lua"; |
| 1209 | |
| 1210 | conf.lua_state = conf.lua_init(&conf); |
| 1211 | } |
| 1212 | } |
| 1213 | #endif |
| 1214 | |
| 1215 | #ifdef HAVE_UBUS |
| 1216 | /* load ubus plugin */ |
| 1217 | if (!(lib = dlopen("uhttpd_ubus.so", RTLD_LAZY | RTLD_GLOBAL))) |
| 1218 | { |
| 1219 | fprintf(stderr, |
| 1220 | "Notice: Unable to load ubus plugin - disabling ubus support! " |
| 1221 | "(Reason: %s)\n", dlerror()); |
| 1222 | } |
| 1223 | else if (conf.ubus_prefix) |
| 1224 | { |
| 1225 | /* resolve functions */ |
| 1226 | if (!(conf.ubus_init = dlsym(lib, "uh_ubus_init")) || |
| 1227 | !(conf.ubus_close = dlsym(lib, "uh_ubus_close")) || |
| 1228 | !(conf.ubus_request = dlsym(lib, "uh_ubus_request"))) |
| 1229 | { |
| 1230 | fprintf(stderr, |
| 1231 | "Error: Failed to lookup required symbols " |
| 1232 | "in ubus plugin: %s\n", dlerror() |
| 1233 | ); |
| 1234 | exit(1); |
| 1235 | } |
| 1236 | |
| 1237 | /* initialize ubus */ |
| 1238 | conf.ubus_state = conf.ubus_init(&conf); |
| 1239 | } |
| 1240 | #endif |
| 1241 | |
| 1242 | /* fork (if not disabled) */ |
| 1243 | if (!nofork) |
| 1244 | { |
| 1245 | switch (fork()) |
| 1246 | { |
| 1247 | case -1: |
| 1248 | perror("fork()"); |
| 1249 | exit(1); |
| 1250 | |
| 1251 | case 0: |
| 1252 | /* daemon setup */ |
| 1253 | if (chdir("/")) |
| 1254 | perror("chdir()"); |
| 1255 | |
| 1256 | if ((cur_fd = open("/dev/null", O_WRONLY)) > -1) |
| 1257 | dup2(cur_fd, 0); |
| 1258 | |
| 1259 | if ((cur_fd = open("/dev/null", O_RDONLY)) > -1) |
| 1260 | dup2(cur_fd, 1); |
| 1261 | |
| 1262 | if ((cur_fd = open("/dev/null", O_RDONLY)) > -1) |
| 1263 | dup2(cur_fd, 2); |
| 1264 | |
| 1265 | break; |
| 1266 | |
| 1267 | default: |
| 1268 | exit(0); |
| 1269 | } |
| 1270 | } |
| 1271 | |
| 1272 | /* server main loop */ |
| 1273 | uloop_run(); |
| 1274 | |
| 1275 | #ifdef HAVE_LUA |
| 1276 | /* destroy the Lua state */ |
| 1277 | if (conf.lua_state != NULL) |
| 1278 | conf.lua_close(conf.lua_state); |
| 1279 | #endif |
| 1280 | |
| 1281 | #ifdef HAVE_UBUS |
| 1282 | /* destroy the ubus state */ |
| 1283 | if (conf.ubus_state != NULL) |
| 1284 | conf.ubus_close(conf.ubus_state); |
| 1285 | #endif |
| 1286 | |
| 1287 | return 0; |
| 1288 | } |
| 1289 | |
