2 * uhttpd - Tiny single-threaded httpd - Main component
4 * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
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
10 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 #define _XOPEN_SOURCE 500 /* crypt() */
22 #include "uhttpd-utils.h"
23 #include "uhttpd-file.h"
26 #include "uhttpd-cgi.h"
30 #include "uhttpd-lua.h"
34 #include "uhttpd-tls.h"
40 static void uh_sigterm(int sig)
45 static void uh_config_parse(struct config *conf)
53 const char *path = conf->file ? conf->file : "/etc/httpd.conf";
56 if ((c = fopen(path, "r")) != NULL)
58 memset(line, 0, sizeof(line));
60 while (fgets(line, sizeof(line) - 1, c))
62 if ((line[0] == '/') && (strchr(line, ':') != NULL))
64 if (!(col1 = strchr(line, ':')) || (*col1++ = 0) ||
65 !(col2 = strchr(col1, ':')) || (*col2++ = 0) ||
66 !(eol = strchr(col2, '\n')) || (*eol++ = 0))
71 if (!uh_auth_add(line, col1, col2))
74 "Notice: No password set for user %s, ignoring "
75 "authentication on %s\n", col1, line
79 else if (!strncmp(line, "I:", 2))
81 if (!(col1 = strchr(line, ':')) || (*col1++ = 0) ||
82 !(eol = strchr(col1, '\n')) || (*eol++ = 0))
87 conf->index_file = strdup(col1);
89 else if (!strncmp(line, "E404:", 5))
91 if (!(col1 = strchr(line, ':')) || (*col1++ = 0) ||
92 !(eol = strchr(col1, '\n')) || (*eol++ = 0))
97 conf->error_handler = strdup(col1);
100 else if ((line[0] == '*') && (strchr(line, ':') != NULL))
102 if (!(col1 = strchr(line, '*')) || (*col1++ = 0) ||
103 !(col2 = strchr(col1, ':')) || (*col2++ = 0) ||
104 !(eol = strchr(col2, '\n')) || (*eol++ = 0))
109 if (!uh_interpreter_add(col1, col2))
112 "Unable to add interpreter %s for extension %s: "
113 "Out of memory\n", col2, col1
124 static void uh_listener_cb(struct uloop_fd *u, unsigned int events);
126 static int uh_socket_bind(fd_set *serv_fds, int *max_fd,
127 const char *host, const char *port,
128 struct addrinfo *hints, int do_tls,
136 int tcp_ka_idl, tcp_ka_int, tcp_ka_cnt;
138 struct listener *l = NULL;
139 struct addrinfo *addrs = NULL, *p = NULL;
141 if ((status = getaddrinfo(host, port, hints, &addrs)) != 0)
143 fprintf(stderr, "getaddrinfo(): %s\n", gai_strerror(status));
146 /* try to bind a new socket to each found address */
147 for (p = addrs; p; p = p->ai_next)
150 if ((sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == -1)
156 /* "address already in use" */
157 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)))
159 perror("setsockopt()");
164 if (conf->tcp_keepalive > 0)
168 tcp_ka_int = conf->tcp_keepalive;
170 if (setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, &yes, sizeof(yes)) ||
171 setsockopt(sock, SOL_TCP, TCP_KEEPIDLE, &tcp_ka_idl, sizeof(tcp_ka_idl)) ||
172 setsockopt(sock, SOL_TCP, TCP_KEEPINTVL, &tcp_ka_int, sizeof(tcp_ka_int)) ||
173 setsockopt(sock, SOL_TCP, TCP_KEEPCNT, &tcp_ka_cnt, sizeof(tcp_ka_cnt)))
175 fprintf(stderr, "Notice: Unable to enable TCP keep-alive: %s\n",
180 /* required to get parallel v4 + v6 working */
181 if (p->ai_family == AF_INET6)
183 if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &yes, sizeof(yes)) == -1)
185 perror("setsockopt()");
191 if (bind(sock, p->ai_addr, p->ai_addrlen) == -1)
198 if (listen(sock, UH_LIMIT_CLIENTS) == -1)
204 /* add listener to global list */
205 if (!(l = uh_listener_add(sock, conf)))
207 fprintf(stderr, "uh_listener_add(): Failed to allocate memory\n");
213 l->tls = do_tls ? conf->tls : NULL;
216 /* add socket to server fd set */
217 FD_SET(sock, serv_fds);
219 *max_fd = max(*max_fd, sock);
221 l->fd.cb = uh_listener_cb;
222 uloop_fd_add(&l->fd, ULOOP_READ | ULOOP_WRITE);
237 static struct http_request * uh_http_header_parse(struct client *cl,
238 char *buffer, int buflen)
240 char *method = buffer;
242 char *version = NULL;
244 char *headers = NULL;
245 char *hdrname = NULL;
246 char *hdrdata = NULL;
251 struct http_request *req = &cl->request;
254 /* terminate initial header line */
255 if ((headers = strfind(buffer, buflen, "\r\n", 2)) != NULL)
257 buffer[buflen-1] = 0;
262 /* find request path */
263 if ((path = strchr(buffer, ' ')) != NULL)
266 /* find http version */
267 if ((path != NULL) && ((version = strchr(path, ' ')) != NULL))
272 if (strcmp(method, "GET") && strcmp(method, "HEAD") && strcmp(method, "POST"))
275 uh_http_response(cl, 405, "Method Not Allowed");
283 req->method = UH_HTTP_MSG_GET;
287 req->method = UH_HTTP_MSG_HEAD;
291 req->method = UH_HTTP_MSG_POST;
297 if (!path || !strlen(path))
299 /* malformed request */
300 uh_http_response(cl, 400, "Bad Request");
309 if ((version == NULL) || (strcmp(version, "HTTP/0.9") &&
310 strcmp(version, "HTTP/1.0") && strcmp(version, "HTTP/1.1")))
312 /* unsupported version */
313 uh_http_response(cl, 400, "Bad Request");
318 req->version = strtof(&version[5], NULL);
321 D("SRV: %s %s HTTP/%.1f\n",
322 (req->method == UH_HTTP_MSG_POST) ? "POST" :
323 (req->method == UH_HTTP_MSG_GET) ? "GET" : "HEAD",
324 req->url, req->version);
326 /* process header fields */
327 for (i = (int)(headers - buffer); i < buflen; i++)
329 /* found eol and have name + value, push out header tuple */
330 if (hdrname && hdrdata && (buffer[i] == '\r' || buffer[i] == '\n'))
335 if ((hdrcount + 1) < array_size(req->headers))
337 D("SRV: HTTP: %s: %s\n", hdrname, hdrdata);
339 req->headers[hdrcount++] = hdrname;
340 req->headers[hdrcount++] = hdrdata;
342 hdrname = hdrdata = NULL;
348 D("SRV: HTTP: header too big (too many headers)\n");
349 uh_http_response(cl, 413, "Request Entity Too Large");
354 /* have name but no value and found a colon, start of value */
355 else if (hdrname && !hdrdata &&
356 ((i+1) < buflen) && (buffer[i] == ':'))
359 hdrdata = &buffer[i+1];
361 while ((hdrdata + 1) < (buffer + buflen) && *hdrdata == ' ')
365 /* have no name and found [A-Za-z], start of name */
366 else if (!hdrname && isalpha(buffer[i]))
368 hdrname = &buffer[i];
373 req->redirect_status = 200;
377 /* Malformed request */
378 uh_http_response(cl, 400, "Bad Request");
383 static struct http_request * uh_http_header_recv(struct client *cl)
385 char *bufptr = cl->httpbuf.buf;
388 ssize_t blen = sizeof(cl->httpbuf.buf)-1;
391 memset(bufptr, 0, sizeof(cl->httpbuf.buf));
396 ensure_out(rlen = uh_tcp_recv(cl, bufptr, blen));
397 D("SRV: Client(%d) peek(%d) = %d\n", cl->fd.fd, blen, rlen);
401 D("SRV: Client(%d) dead [%s]\n", cl->fd.fd, strerror(errno));
408 if ((idxptr = strfind(cl->httpbuf.buf, sizeof(cl->httpbuf.buf),
411 /* header read complete ... */
412 cl->httpbuf.ptr = idxptr + 4;
413 cl->httpbuf.len = bufptr - cl->httpbuf.ptr;
415 return uh_http_header_parse(cl, cl->httpbuf.buf,
416 (cl->httpbuf.ptr - cl->httpbuf.buf));
420 /* request entity too large */
421 D("SRV: HTTP: header too big (buffer exceeded)\n");
422 uh_http_response(cl, 413, "Request Entity Too Large");
428 #if defined(HAVE_LUA) || defined(HAVE_CGI)
429 static int uh_path_match(const char *prefix, const char *url)
431 if ((strstr(url, prefix) == url) &&
432 ((prefix[strlen(prefix)-1] == '/') ||
433 (strlen(url) == strlen(prefix)) ||
434 (url[strlen(prefix)] == '/')))
443 static bool uh_dispatch_request(struct client *cl, struct http_request *req)
445 struct path_info *pin;
446 struct interpreter *ipr = NULL;
447 struct config *conf = cl->server->conf;
451 if (conf->lua_state &&
452 uh_path_match(conf->lua_prefix, req->url))
454 return conf->lua_request(cl, conf->lua_state);
461 if (conf->ubus_state &&
462 uh_path_match(conf->ubus_prefix, req->url))
464 return conf->ubus_request(cl, conf->ubus_state);
469 /* dispatch request */
470 if ((pin = uh_path_lookup(cl, req->url)) != NULL)
473 if (!pin->redirected && uh_auth_check(cl, req, pin))
476 if (uh_path_match(conf->cgi_prefix, pin->name) ||
477 (ipr = uh_interpreter_lookup(pin->phys)) != NULL)
479 return uh_cgi_request(cl, pin, ipr);
482 return uh_file_request(cl, pin);
489 /* Try to invoke an error handler */
490 if ((pin = uh_path_lookup(cl, conf->error_handler)) != NULL)
493 if (uh_auth_check(cl, req, pin))
495 req->redirect_status = 404;
497 if (uh_path_match(conf->cgi_prefix, pin->name) ||
498 (ipr = uh_interpreter_lookup(pin->phys)) != NULL)
500 return uh_cgi_request(cl, pin, ipr);
503 return uh_file_request(cl, pin);
510 uh_http_sendhf(cl, 404, "Not Found", "No such file or directory");
517 static void uh_client_cb(struct uloop_fd *u, unsigned int events);
519 static void uh_listener_cb(struct uloop_fd *u, unsigned int events)
522 struct listener *serv;
526 serv = container_of(u, struct listener, fd);
529 /* defer client if maximum number of requests is exceeded */
530 if (serv->n_clients >= conf->max_requests)
533 /* handle new connections */
534 if ((new_fd = accept(u->fd, NULL, 0)) != -1)
536 D("SRV: Server(%d) accept => Client(%d)\n", u->fd, new_fd);
538 /* add to global client list */
539 if ((cl = uh_client_add(new_fd, serv)) != NULL)
541 /* add client socket to global fdset */
542 uloop_fd_add(&cl->fd, ULOOP_READ | ULOOP_WRITE);
545 /* setup client tls context */
548 if (conf->tls_accept(cl) < 1)
550 D("SRV: Client(%d) SSL handshake failed, drop\n", new_fd);
552 /* remove from global client list */
553 uh_client_remove(cl);
559 cl->fd.cb = uh_client_cb;
563 /* insufficient resources */
566 fprintf(stderr, "uh_client_add(): Cannot allocate memory\n");
572 static void uh_child_cb(struct uloop_process *p, int rv)
574 struct client *cl = container_of(p, struct client, proc);
576 D("SRV: Client(%d) child(%d) is dead\n", cl->fd.fd, cl->proc.pid);
580 uh_client_cb(&cl->fd, ULOOP_READ | ULOOP_WRITE);
583 static void uh_kill9_cb(struct uloop_timeout *t)
585 struct client *cl = container_of(t, struct client, timeout);
587 if (!kill(cl->proc.pid, 0))
589 D("SRV: Client(%d) child(%d) kill(SIGKILL)...\n",
590 cl->fd.fd, cl->proc.pid);
592 kill(cl->proc.pid, SIGKILL);
596 static void uh_timeout_cb(struct uloop_timeout *t)
598 struct client *cl = container_of(t, struct client, timeout);
600 D("SRV: Client(%d) child(%d) timed out\n", cl->fd.fd, cl->proc.pid);
602 if (!kill(cl->proc.pid, 0))
604 D("SRV: Client(%d) child(%d) kill(SIGTERM)...\n",
605 cl->fd.fd, cl->proc.pid);
607 kill(cl->proc.pid, SIGTERM);
609 cl->timeout.cb = uh_kill9_cb;
610 uloop_timeout_set(&cl->timeout, 1000);
614 static void uh_client_cb(struct uloop_fd *u, unsigned int events)
619 struct http_request *req;
621 cl = container_of(u, struct client, fd);
622 conf = cl->server->conf;
624 D("SRV: Client(%d) enter callback\n", u->fd);
626 /* undispatched yet */
629 /* we have no headers yet and this was a write event, ignore... */
630 if (!(events & ULOOP_READ))
632 D("SRV: Client(%d) ignoring write event before headers\n", u->fd);
636 /* attempt to receive and parse headers */
637 if (!(req = uh_http_header_recv(cl)))
639 D("SRV: Client(%d) failed to receive header\n", u->fd);
640 uh_client_shutdown(cl);
644 /* process expect headers */
645 foreach_header(i, req->headers)
647 if (strcasecmp(req->headers[i], "Expect"))
650 if (strcasecmp(req->headers[i+1], "100-continue"))
652 D("SRV: Client(%d) unknown expect header (%s)\n",
653 u->fd, req->headers[i+1]);
655 uh_http_response(cl, 417, "Precondition Failed");
656 uh_client_shutdown(cl);
661 D("SRV: Client(%d) sending HTTP/1.1 100 Continue\n", u->fd);
663 uh_http_sendf(cl, NULL, "HTTP/1.1 100 Continue\r\n\r\n");
664 cl->httpbuf.len = 0; /* client will re-send the body */
669 /* RFC1918 filtering */
670 if (conf->rfc1918_filter &&
671 sa_rfc1918(&cl->peeraddr) && !sa_rfc1918(&cl->servaddr))
673 uh_http_sendhf(cl, 403, "Forbidden",
674 "Rejected request from RFC1918 IP "
675 "to public server address");
677 uh_client_shutdown(cl);
681 /* dispatch request */
682 if (!uh_dispatch_request(cl, req))
684 D("SRV: Client(%d) failed to dispach request\n", u->fd);
685 uh_client_shutdown(cl);
689 /* request handler spawned a child, register handler */
692 D("SRV: Client(%d) child(%d) spawned\n", u->fd, cl->proc.pid);
694 cl->proc.cb = uh_child_cb;
695 uloop_process_add(&cl->proc);
697 cl->timeout.cb = uh_timeout_cb;
698 uloop_timeout_set(&cl->timeout, conf->script_timeout * 1000);
701 /* header processing complete */
702 D("SRV: Client(%d) dispatched\n", u->fd);
703 cl->dispatched = true;
709 D("SRV: Client(%d) response callback signalized EOF\n", u->fd);
710 uh_client_shutdown(cl);
716 static inline int uh_inittls(struct config *conf)
722 if (conf->tls != NULL)
725 /* load TLS plugin */
726 if (!(lib = dlopen("uhttpd_tls.so", RTLD_LAZY | RTLD_GLOBAL)))
729 "Notice: Unable to load TLS plugin - disabling SSL support! "
730 "(Reason: %s)\n", dlerror()
737 /* resolve functions */
738 if (!(conf->tls_init = dlsym(lib, "uh_tls_ctx_init")) ||
739 !(conf->tls_cert = dlsym(lib, "uh_tls_ctx_cert")) ||
740 !(conf->tls_key = dlsym(lib, "uh_tls_ctx_key")) ||
741 !(conf->tls_free = dlsym(lib, "uh_tls_ctx_free")) ||
742 !(conf->tls_accept = dlsym(lib, "uh_tls_client_accept")) ||
743 !(conf->tls_close = dlsym(lib, "uh_tls_client_close")) ||
744 !(conf->tls_recv = dlsym(lib, "uh_tls_client_recv")) ||
745 !(conf->tls_send = dlsym(lib, "uh_tls_client_send")))
748 "Error: Failed to lookup required symbols "
749 "in TLS plugin: %s\n", dlerror()
754 /* init SSL context */
755 if (!(conf->tls = conf->tls_init()))
757 fprintf(stderr, "Error: Failed to initalize SSL context\n");
766 int main (int argc, char **argv)
768 /* master file descriptor list */
771 /* working structs */
772 struct addrinfo hints;
776 /* maximum file descriptor number */
777 int cur_fd, max_fd = 0;
799 /* handle SIGPIPE, SIGINT, SIGTERM */
801 sigemptyset(&sa.sa_mask);
803 sa.sa_handler = SIG_IGN;
804 sigaction(SIGPIPE, &sa, NULL);
806 sa.sa_handler = uh_sigterm;
807 sigaction(SIGINT, &sa, NULL);
808 sigaction(SIGTERM, &sa, NULL);
810 /* prepare addrinfo hints */
811 memset(&hints, 0, sizeof(hints));
812 hints.ai_family = AF_UNSPEC;
813 hints.ai_socktype = SOCK_STREAM;
814 hints.ai_flags = AI_PASSIVE;
817 memset(&conf, 0, sizeof(conf));
818 memset(bind, 0, sizeof(bind));
822 while ((opt = getopt(argc, argv,
823 "fSDRC:K:E:I:p:s:h:c:l:L:d:r:m:n:x:i:t:T:A:u:U:")) > 0)
830 if ((port = strrchr(optarg, ':')) != NULL)
832 if ((optarg[0] == '[') && (port > optarg) && (port[-1] == ']'))
833 memcpy(bind, optarg + 1,
834 min(sizeof(bind), (int)(port - optarg) - 2));
837 min(sizeof(bind), (int)(port - optarg)));
849 if (uh_inittls(&conf))
852 "Notice: TLS support is disabled, "
853 "ignoring '-s %s'\n", optarg
863 bound += uh_socket_bind(&serv_fds, &max_fd,
864 bind[0] ? bind : NULL,
865 port, &hints, (opt == 's'), &conf);
867 memset(bind, 0, sizeof(bind));
873 if (!uh_inittls(&conf))
875 if (conf.tls_cert(conf.tls, optarg) < 1)
878 "Error: Invalid certificate file given\n");
889 if (!uh_inittls(&conf))
891 if (conf.tls_key(conf.tls, optarg) < 1)
894 "Error: Invalid private key file given\n");
906 if (! realpath(optarg, conf.docroot))
908 fprintf(stderr, "Error: Invalid directory %s: %s\n",
909 optarg, strerror(errno));
916 if ((strlen(optarg) == 0) || (optarg[0] != '/'))
918 fprintf(stderr, "Error: Invalid error handler: %s\n",
922 conf.error_handler = optarg;
927 if ((strlen(optarg) == 0) || (optarg[0] == '/'))
929 fprintf(stderr, "Error: Invalid index page: %s\n",
933 conf.index_file = optarg;
936 /* don't follow symlinks */
938 conf.no_symlinks = 1;
941 /* don't list directories */
943 conf.no_dirlists = 1;
947 conf.rfc1918_filter = 1;
951 conf.max_requests = atoi(optarg);
957 conf.cgi_prefix = optarg;
962 if ((optarg[0] == '.') && (port = strchr(optarg, '=')))
965 uh_interpreter_add(optarg, port);
969 fprintf(stderr, "Error: Invalid interpreter: %s\n",
979 conf.lua_prefix = optarg;
984 conf.lua_handler = optarg;
991 conf.ubus_prefix = optarg;
996 conf.ubus_socket = optarg;
1000 #if defined(HAVE_CGI) || defined(HAVE_LUA)
1001 /* script timeout */
1003 conf.script_timeout = atoi(optarg);
1007 /* network timeout */
1009 conf.network_timeout = atoi(optarg);
1012 /* tcp keep-alive */
1014 conf.tcp_keepalive = atoi(optarg);
1024 if ((port = malloc(strlen(optarg)+1)) != NULL)
1026 /* "decode" plus to space to retain compat */
1027 for (opt = 0; optarg[opt]; opt++)
1028 if (optarg[opt] == '+')
1030 /* opt now contains strlen(optarg) -- no need to re-scan */
1031 memset(port, 0, opt+1);
1032 if (uh_urldecode(port, opt, optarg, opt) < 0)
1033 fprintf(stderr, "uhttpd: invalid encoding\n");
1041 /* basic auth realm */
1043 conf.realm = optarg;
1048 printf("%s\n", crypt(optarg, "$1$"));
1059 "Usage: %s -p [addr:]port [-h docroot]\n"
1060 " -f Do not fork to background\n"
1061 " -c file Configuration file, default is '/etc/httpd.conf'\n"
1062 " -p [addr:]port Bind to specified address and port, multiple allowed\n"
1064 " -s [addr:]port Like -p but provide HTTPS on this port\n"
1065 " -C file ASN.1 server certificate file\n"
1066 " -K file ASN.1 server private key file\n"
1068 " -h directory Specify the document root, default is '.'\n"
1069 " -E string Use given virtual URL as 404 error handler\n"
1070 " -I string Use given filename as index page for directories\n"
1071 " -S Do not follow symbolic links outside of the docroot\n"
1072 " -D Do not allow directory listings, send 403 instead\n"
1073 " -R Enable RFC1918 filter\n"
1074 " -n count Maximum allowed number of concurrent requests\n"
1076 " -l string URL prefix for Lua handler, default is '/lua'\n"
1077 " -L file Lua handler script, omit to disable Lua\n"
1080 " -u string URL prefix for HTTP/JSON handler, default is '/ubus'\n"
1081 " -U file Override ubus socket path\n"
1084 " -x string URL prefix for CGI handler, default is '/cgi-bin'\n"
1085 " -i .ext=path Use interpreter at path for files with the given extension\n"
1087 #if defined(HAVE_CGI) || defined(HAVE_LUA) || defined(HAVE_UBUS)
1088 " -t seconds CGI, Lua and UBUS script timeout in seconds, default is 60\n"
1090 " -T seconds Network timeout in seconds, default is 30\n"
1091 " -d string URL decode given string\n"
1092 " -r string Specify basic auth realm\n"
1093 " -m string MD5 crypt given string\n"
1102 if ((tls == 1) && (keys < 2))
1104 fprintf(stderr, "Error: Missing private key or certificate file\n");
1111 fprintf(stderr, "Error: No sockets bound, unable to continue\n");
1115 /* default docroot */
1116 if (!conf.docroot[0] && !realpath(".", conf.docroot))
1118 fprintf(stderr, "Error: Can not determine default document root: %s\n",
1125 conf.realm = "Protected Area";
1128 uh_config_parse(&conf);
1130 /* default max requests */
1131 if (conf.max_requests <= 0)
1132 conf.max_requests = 3;
1134 /* default network timeout */
1135 if (conf.network_timeout <= 0)
1136 conf.network_timeout = 30;
1138 #if defined(HAVE_CGI) || defined(HAVE_LUA) || defined(HAVE_UBUS)
1139 /* default script timeout */
1140 if (conf.script_timeout <= 0)
1141 conf.script_timeout = 60;
1145 /* default cgi prefix */
1146 if (!conf.cgi_prefix)
1147 conf.cgi_prefix = "/cgi-bin";
1151 /* load Lua plugin */
1152 if (!(lib = dlopen("uhttpd_lua.so", RTLD_LAZY | RTLD_GLOBAL)))
1155 "Notice: Unable to load Lua plugin - disabling Lua support! "
1156 "(Reason: %s)\n", dlerror());
1160 /* resolve functions */
1161 if (!(conf.lua_init = dlsym(lib, "uh_lua_init")) ||
1162 !(conf.lua_close = dlsym(lib, "uh_lua_close")) ||
1163 !(conf.lua_request = dlsym(lib, "uh_lua_request")))
1166 "Error: Failed to lookup required symbols "
1167 "in Lua plugin: %s\n", dlerror()
1172 /* init Lua runtime if handler is specified */
1173 if (conf.lua_handler)
1175 /* default lua prefix */
1176 if (!conf.lua_prefix)
1177 conf.lua_prefix = "/lua";
1179 conf.lua_state = conf.lua_init(&conf);
1185 /* load ubus plugin */
1186 if (!(lib = dlopen("uhttpd_ubus.so", RTLD_LAZY | RTLD_GLOBAL)))
1189 "Notice: Unable to load ubus plugin - disabling ubus support! "
1190 "(Reason: %s)\n", dlerror());
1194 /* resolve functions */
1195 if (!(conf.ubus_init = dlsym(lib, "uh_ubus_init")) ||
1196 !(conf.ubus_close = dlsym(lib, "uh_ubus_close")) ||
1197 !(conf.ubus_request = dlsym(lib, "uh_ubus_request")))
1200 "Error: Failed to lookup required symbols "
1201 "in ubus plugin: %s\n", dlerror()
1206 /* default ubus prefix */
1207 if (!conf.ubus_prefix)
1208 conf.ubus_prefix = "/ubus";
1210 conf.ubus_state = conf.ubus_init(&conf);
1214 /* fork (if not disabled) */
1228 if ((cur_fd = open("/dev/null", O_WRONLY)) > -1)
1231 if ((cur_fd = open("/dev/null", O_RDONLY)) > -1)
1234 if ((cur_fd = open("/dev/null", O_RDONLY)) > -1)
1244 /* server main loop */
1248 /* destroy the Lua state */
1249 if (conf.lua_state != NULL)
1250 conf.lua_close(conf.lua_state);
1254 /* destroy the ubus state */
1255 if (conf.ubus_state != NULL)
1256 conf.ubus_close(conf.ubus_state);