diff options
Diffstat (limited to 'package/uhttpd/src/uhttpd.c')
| -rw-r--r-- | package/uhttpd/src/uhttpd.c | 1288 |
1 files changed, 0 insertions, 1288 deletions
diff --git a/package/uhttpd/src/uhttpd.c b/package/uhttpd/src/uhttpd.c deleted file mode 100644 index 1efcbf0f51..0000000000 --- a/package/uhttpd/src/uhttpd.c +++ /dev/null @@ -1,1288 +0,0 @@ -/* - * uhttpd - Tiny single-threaded httpd - Main component - * - * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org> - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#define _XOPEN_SOURCE 500 /* crypt() */ - -#include "uhttpd.h" -#include "uhttpd-utils.h" -#include "uhttpd-file.h" - -#ifdef HAVE_CGI -#include "uhttpd-cgi.h" -#endif - -#ifdef HAVE_LUA -#include "uhttpd-lua.h" -#endif - -#ifdef HAVE_TLS -#include "uhttpd-tls.h" -#endif - - -const char * http_methods[] = { "GET", "POST", "HEAD", }; -const char * http_versions[] = { "HTTP/0.9", "HTTP/1.0", "HTTP/1.1", }; - -static int run = 1; - -static void uh_sigterm(int sig) -{ - run = 0; -} - -static void uh_config_parse(struct config *conf) -{ - FILE *c; - char line[512]; - char *col1 = NULL; - char *col2 = NULL; - char *eol = NULL; - - const char *path = conf->file ? conf->file : "/etc/httpd.conf"; - - - if ((c = fopen(path, "r")) != NULL) - { - memset(line, 0, sizeof(line)); - - while (fgets(line, sizeof(line) - 1, c)) - { - if ((line[0] == '/') && (strchr(line, ':') != NULL)) - { - if (!(col1 = strchr(line, ':')) || (*col1++ = 0) || - !(col2 = strchr(col1, ':')) || (*col2++ = 0) || - !(eol = strchr(col2, '\n')) || (*eol++ = 0)) - { - continue; - } - - if (!uh_auth_add(line, col1, col2)) - { - fprintf(stderr, - "Notice: No password set for user %s, ignoring " - "authentication on %s\n", col1, line - ); - } - } - else if (!strncmp(line, "I:", 2)) - { - if (!(col1 = strchr(line, ':')) || (*col1++ = 0) || - !(eol = strchr(col1, '\n')) || (*eol++ = 0)) - { - continue; - } - - conf->index_file = strdup(col1); - } - else if (!strncmp(line, "E404:", 5)) - { - if (!(col1 = strchr(line, ':')) || (*col1++ = 0) || - !(eol = strchr(col1, '\n')) || (*eol++ = 0)) - { - continue; - } - - conf->error_handler = strdup(col1); - } -#ifdef HAVE_CGI - else if ((line[0] == '*') && (strchr(line, ':') != NULL)) - { - if (!(col1 = strchr(line, '*')) || (*col1++ = 0) || - !(col2 = strchr(col1, ':')) || (*col2++ = 0) || - !(eol = strchr(col2, '\n')) || (*eol++ = 0)) - { - continue; - } - - if (!uh_interpreter_add(col1, col2)) - { - fprintf(stderr, - "Unable to add interpreter %s for extension %s: " - "Out of memory\n", col2, col1 - ); - } - } -#endif - } - - fclose(c); - } -} - -static void uh_listener_cb(struct uloop_fd *u, unsigned int events); - -static int uh_socket_bind(const char *host, const char *port, - struct addrinfo *hints, int do_tls, - struct config *conf) -{ - int sock = -1; - int yes = 1; - int status; - int bound = 0; - - int tcp_ka_idl, tcp_ka_int, tcp_ka_cnt; - - struct listener *l = NULL; - struct addrinfo *addrs = NULL, *p = NULL; - - if ((status = getaddrinfo(host, port, hints, &addrs)) != 0) - { - fprintf(stderr, "getaddrinfo(): %s\n", gai_strerror(status)); - } - - /* try to bind a new socket to each found address */ - for (p = addrs; p; p = p->ai_next) - { - /* get the socket */ - if ((sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == -1) - { - perror("socket()"); - goto error; - } - - /* "address already in use" */ - if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes))) - { - perror("setsockopt()"); - goto error; - } - - /* TCP keep-alive */ - if (conf->tcp_keepalive > 0) - { - tcp_ka_idl = 1; - tcp_ka_cnt = 3; - tcp_ka_int = conf->tcp_keepalive; - - if (setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, &yes, sizeof(yes)) || - setsockopt(sock, SOL_TCP, TCP_KEEPIDLE, &tcp_ka_idl, sizeof(tcp_ka_idl)) || - setsockopt(sock, SOL_TCP, TCP_KEEPINTVL, &tcp_ka_int, sizeof(tcp_ka_int)) || - setsockopt(sock, SOL_TCP, TCP_KEEPCNT, &tcp_ka_cnt, sizeof(tcp_ka_cnt))) - { - fprintf(stderr, "Notice: Unable to enable TCP keep-alive: %s\n", - strerror(errno)); - } - } - - /* required to get parallel v4 + v6 working */ - if (p->ai_family == AF_INET6) - { - if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &yes, sizeof(yes)) == -1) - { - perror("setsockopt()"); - goto error; - } - } - - /* bind */ - if (bind(sock, p->ai_addr, p->ai_addrlen) == -1) - { - perror("bind()"); - goto error; - } - - /* listen */ - if (listen(sock, UH_LIMIT_CLIENTS) == -1) - { - perror("listen()"); - goto error; - } - - /* add listener to global list */ - if (!(l = uh_listener_add(sock, conf))) - { - fprintf(stderr, "uh_listener_add(): Failed to allocate memory\n"); - goto error; - } - -#ifdef HAVE_TLS - /* init TLS */ - l->tls = do_tls ? conf->tls : NULL; -#endif - - /* add socket to uloop */ - fd_cloexec(sock); - uh_ufd_add(&l->fd, uh_listener_cb, ULOOP_READ); - - bound++; - continue; - - error: - if (sock > 0) - close(sock); - } - - freeaddrinfo(addrs); - - return bound; -} - -static struct http_request * uh_http_header_parse(struct client *cl, - char *buffer, int buflen) -{ - char *method = buffer; - char *path = NULL; - char *version = NULL; - - char *headers = NULL; - char *hdrname = NULL; - char *hdrdata = NULL; - - int i; - int hdrcount = 0; - - struct http_request *req = &cl->request; - - - /* terminate initial header line */ - if ((headers = strfind(buffer, buflen, "\r\n", 2)) != NULL) - { - buffer[buflen-1] = 0; - - *headers++ = 0; - *headers++ = 0; - - /* find request path */ - if ((path = strchr(buffer, ' ')) != NULL) - *path++ = 0; - - /* find http version */ - if ((path != NULL) && ((version = strchr(path, ' ')) != NULL)) - *version++ = 0; - - - /* check method */ - if (method && !strcmp(method, "GET")) - req->method = UH_HTTP_MSG_GET; - else if (method && !strcmp(method, "POST")) - req->method = UH_HTTP_MSG_POST; - else if (method && !strcmp(method, "HEAD")) - req->method = UH_HTTP_MSG_HEAD; - else - { - /* invalid method */ - uh_http_response(cl, 405, "Method Not Allowed"); - return NULL; - } - - /* check path */ - if (!path || !strlen(path)) - { - /* malformed request */ - uh_http_response(cl, 400, "Bad Request"); - return NULL; - } - else - { - req->url = path; - } - - /* check version */ - if (version && !strcmp(version, "HTTP/0.9")) - req->version = UH_HTTP_VER_0_9; - else if (version && !strcmp(version, "HTTP/1.0")) - req->version = UH_HTTP_VER_1_0; - else if (version && !strcmp(version, "HTTP/1.1")) - req->version = UH_HTTP_VER_1_1; - else - { - /* unsupported version */ - uh_http_response(cl, 400, "Bad Request"); - return NULL; - } - - D("SRV: %s %s %s\n", - http_methods[req->method], req->url, http_versions[req->version]); - - /* process header fields */ - for (i = (int)(headers - buffer); i < buflen; i++) - { - /* found eol and have name + value, push out header tuple */ - if (hdrname && hdrdata && (buffer[i] == '\r' || buffer[i] == '\n')) - { - buffer[i] = 0; - - /* store */ - if ((hdrcount + 1) < array_size(req->headers)) - { - D("SRV: HTTP: %s: %s\n", hdrname, hdrdata); - - req->headers[hdrcount++] = hdrname; - req->headers[hdrcount++] = hdrdata; - - hdrname = hdrdata = NULL; - } - - /* too large */ - else - { - D("SRV: HTTP: header too big (too many headers)\n"); - uh_http_response(cl, 413, "Request Entity Too Large"); - return NULL; - } - } - - /* have name but no value and found a colon, start of value */ - else if (hdrname && !hdrdata && - ((i+1) < buflen) && (buffer[i] == ':')) - { - buffer[i] = 0; - hdrdata = &buffer[i+1]; - - while ((hdrdata + 1) < (buffer + buflen) && *hdrdata == ' ') - hdrdata++; - } - - /* have no name and found [A-Za-z], start of name */ - else if (!hdrname && isalpha(buffer[i])) - { - hdrname = &buffer[i]; - } - } - - /* valid enough */ - req->redirect_status = 200; - return req; - } - - /* Malformed request */ - uh_http_response(cl, 400, "Bad Request"); - return NULL; -} - - -static struct http_request * uh_http_header_recv(struct client *cl) -{ - char *bufptr = cl->httpbuf.buf; - char *idxptr = NULL; - - ssize_t blen = sizeof(cl->httpbuf.buf)-1; - ssize_t rlen = 0; - - memset(bufptr, 0, sizeof(cl->httpbuf.buf)); - - while (blen > 0) - { - /* receive data */ - ensure_out(rlen = uh_tcp_recv(cl, bufptr, blen)); - D("SRV: Client(%d) peek(%d) = %d\n", cl->fd.fd, blen, rlen); - - if (rlen <= 0) - { - D("SRV: Client(%d) dead [%s]\n", cl->fd.fd, strerror(errno)); - return NULL; - } - - blen -= rlen; - bufptr += rlen; - - if ((idxptr = strfind(cl->httpbuf.buf, sizeof(cl->httpbuf.buf), - "\r\n\r\n", 4))) - { - /* header read complete ... */ - cl->httpbuf.ptr = idxptr + 4; - cl->httpbuf.len = bufptr - cl->httpbuf.ptr; - - return uh_http_header_parse(cl, cl->httpbuf.buf, - (cl->httpbuf.ptr - cl->httpbuf.buf)); - } - } - - /* request entity too large */ - D("SRV: HTTP: header too big (buffer exceeded)\n"); - uh_http_response(cl, 413, "Request Entity Too Large"); - -out: - return NULL; -} - -#if defined(HAVE_LUA) || defined(HAVE_CGI) -static int uh_path_match(const char *prefix, const char *url) -{ - if ((strstr(url, prefix) == url) && - ((prefix[strlen(prefix)-1] == '/') || - (strlen(url) == strlen(prefix)) || - (url[strlen(prefix)] == '/'))) - { - return 1; - } - - return 0; -} -#endif - -static bool uh_dispatch_request(struct client *cl, struct http_request *req) -{ - struct path_info *pin; - struct interpreter *ipr = NULL; - struct config *conf = cl->server->conf; - -#ifdef HAVE_LUA - /* Lua request? */ - if (conf->lua_state && - uh_path_match(conf->lua_prefix, req->url)) - { - return conf->lua_request(cl, conf->lua_state); - } - else -#endif - -#ifdef HAVE_UBUS - /* ubus request? */ - if (conf->ubus_state && - uh_path_match(conf->ubus_prefix, req->url)) - { - return conf->ubus_request(cl, conf->ubus_state); - } - else -#endif - - /* dispatch request */ - if ((pin = uh_path_lookup(cl, req->url)) != NULL) - { - /* auth ok? */ - if (!pin->redirected && uh_auth_check(cl, req, pin)) - { -#ifdef HAVE_CGI - if (uh_path_match(conf->cgi_prefix, pin->name) || - (ipr = uh_interpreter_lookup(pin->phys)) != NULL) - { - return uh_cgi_request(cl, pin, ipr); - } -#endif - return uh_file_request(cl, pin); - } - } - - /* 404 - pass 1 */ - else - { - /* Try to invoke an error handler */ - if ((pin = uh_path_lookup(cl, conf->error_handler)) != NULL) - { - /* auth ok? */ - if (uh_auth_check(cl, req, pin)) - { - req->redirect_status = 404; -#ifdef HAVE_CGI - if (uh_path_match(conf->cgi_prefix, pin->name) || - (ipr = uh_interpreter_lookup(pin->phys)) != NULL) - { - return uh_cgi_request(cl, pin, ipr); - } -#endif - return uh_file_request(cl, pin); - } - } - - /* 404 - pass 2 */ - else - { - uh_http_sendhf(cl, 404, "Not Found", "No such file or directory"); - } - } - - return false; -} - -static void uh_socket_cb(struct uloop_fd *u, unsigned int events); - -static void uh_listener_cb(struct uloop_fd *u, unsigned int events) -{ - int new_fd; - struct listener *serv; - struct client *cl; - struct config *conf; - - struct sockaddr_in6 sa; - socklen_t sl = sizeof(sa); - - serv = container_of(u, struct listener, fd); - conf = serv->conf; - - /* defer client if maximum number of requests is exceeded */ - if (serv->n_clients >= conf->max_requests) - return; - - /* handle new connections */ - if ((new_fd = accept(u->fd, (struct sockaddr *)&sa, &sl)) != -1) - { - D("SRV: Server(%d) accept => Client(%d)\n", u->fd, new_fd); - - /* add to global client list */ - if ((cl = uh_client_add(new_fd, serv, &sa)) != NULL) - { - /* add client socket to global fdset */ - uh_ufd_add(&cl->fd, uh_socket_cb, ULOOP_READ); - fd_cloexec(cl->fd.fd); - -#ifdef HAVE_TLS - /* setup client tls context */ - if (conf->tls) - { - if (conf->tls_accept(cl) < 1) - { - D("SRV: Client(%d) SSL handshake failed, drop\n", new_fd); - - /* remove from global client list */ - uh_client_remove(cl); - return; - } - } -#endif - } - - /* insufficient resources */ - else - { - fprintf(stderr, "uh_client_add(): Cannot allocate memory\n"); - close(new_fd); - } - } -} - -static void uh_client_cb(struct client *cl, unsigned int events); - -static void uh_rpipe_cb(struct uloop_fd *u, unsigned int events) -{ - struct client *cl = container_of(u, struct client, rpipe); - - D("SRV: Client(%d) rpipe readable\n", cl->fd.fd); - - uh_client_cb(cl, ULOOP_WRITE); -} - -static void uh_socket_cb(struct uloop_fd *u, unsigned int events) -{ - struct client *cl = container_of(u, struct client, fd); - - D("SRV: Client(%d) socket readable\n", cl->fd.fd); - - uh_client_cb(cl, ULOOP_READ); -} - -static void uh_child_cb(struct uloop_process *p, int rv) -{ - struct client *cl = container_of(p, struct client, proc); - - D("SRV: Client(%d) child(%d) dead\n", cl->fd.fd, cl->proc.pid); - - uh_client_cb(cl, ULOOP_READ | ULOOP_WRITE); -} - -static void uh_kill9_cb(struct uloop_timeout *t) -{ - struct client *cl = container_of(t, struct client, timeout); - - if (!kill(cl->proc.pid, 0)) - { - D("SRV: Client(%d) child(%d) kill(SIGKILL)...\n", - cl->fd.fd, cl->proc.pid); - - kill(cl->proc.pid, SIGKILL); - } -} - -static void uh_timeout_cb(struct uloop_timeout *t) -{ - struct client *cl = container_of(t, struct client, timeout); - - D("SRV: Client(%d) child(%d) timed out\n", cl->fd.fd, cl->proc.pid); - - if (!kill(cl->proc.pid, 0)) - { - D("SRV: Client(%d) child(%d) kill(SIGTERM)...\n", - cl->fd.fd, cl->proc.pid); - - kill(cl->proc.pid, SIGTERM); - - cl->timeout.cb = uh_kill9_cb; - uloop_timeout_set(&cl->timeout, 1000); - } -} - -static void uh_client_cb(struct client *cl, unsigned int events) -{ - int i; - struct config *conf; - struct http_request *req; - - conf = cl->server->conf; - - D("SRV: Client(%d) enter callback\n", cl->fd.fd); - - /* undispatched yet */ - if (!cl->dispatched) - { - /* we have no headers yet and this was a write event, ignore... */ - if (!(events & ULOOP_READ)) - { - D("SRV: Client(%d) ignoring write event before headers\n", cl->fd.fd); - return; - } - - /* attempt to receive and parse headers */ - if (!(req = uh_http_header_recv(cl))) - { - D("SRV: Client(%d) failed to receive header\n", cl->fd.fd); - uh_client_shutdown(cl); - return; - } - - /* process expect headers */ - foreach_header(i, req->headers) - { - if (strcasecmp(req->headers[i], "Expect")) - continue; - - if (strcasecmp(req->headers[i+1], "100-continue")) - { - D("SRV: Client(%d) unknown expect header (%s)\n", - cl->fd.fd, req->headers[i+1]); - - uh_http_response(cl, 417, "Precondition Failed"); - uh_client_shutdown(cl); - return; - } - else - { - D("SRV: Client(%d) sending HTTP/1.1 100 Continue\n", cl->fd.fd); - - uh_http_sendf(cl, NULL, "HTTP/1.1 100 Continue\r\n\r\n"); - cl->httpbuf.len = 0; /* client will re-send the body */ - break; - } - } - - /* RFC1918 filtering */ - if (conf->rfc1918_filter && - sa_rfc1918(&cl->peeraddr) && !sa_rfc1918(&cl->servaddr)) - { - uh_http_sendhf(cl, 403, "Forbidden", - "Rejected request from RFC1918 IP " - "to public server address"); - - uh_client_shutdown(cl); - return; - } - - /* dispatch request */ - if (!uh_dispatch_request(cl, req)) - { - D("SRV: Client(%d) failed to dispach request\n", cl->fd.fd); - uh_client_shutdown(cl); - return; - } - - /* request handler spawned a pipe, register handler */ - if (cl->rpipe.fd > -1) - { - D("SRV: Client(%d) pipe(%d) spawned\n", cl->fd.fd, cl->rpipe.fd); - - uh_ufd_add(&cl->rpipe, uh_rpipe_cb, ULOOP_READ); - } - - /* request handler spawned a child, register handler */ - if (cl->proc.pid) - { - D("SRV: Client(%d) child(%d) spawned\n", cl->fd.fd, cl->proc.pid); - - cl->proc.cb = uh_child_cb; - uloop_process_add(&cl->proc); - - cl->timeout.cb = uh_timeout_cb; - uloop_timeout_set(&cl->timeout, conf->script_timeout * 1000); - } - - /* header processing complete */ - D("SRV: Client(%d) dispatched\n", cl->fd.fd); - cl->dispatched = true; - } - - if (!cl->cb(cl)) - { - D("SRV: Client(%d) response callback signalized EOF\n", cl->fd.fd); - uh_client_shutdown(cl); - return; - } -} - -#ifdef HAVE_TLS -static inline int uh_inittls(struct config *conf) -{ - /* library handle */ - void *lib; - - /* already loaded */ - if (conf->tls != NULL) - return 0; - - /* load TLS plugin */ - if (!(lib = dlopen("uhttpd_tls.so", RTLD_LAZY | RTLD_GLOBAL))) - { - fprintf(stderr, - "Notice: Unable to load TLS plugin - disabling SSL support! " - "(Reason: %s)\n", dlerror() - ); - - return 1; - } - else - { - /* resolve functions */ - if (!(conf->tls_init = dlsym(lib, "uh_tls_ctx_init")) || - !(conf->tls_cert = dlsym(lib, "uh_tls_ctx_cert")) || - !(conf->tls_key = dlsym(lib, "uh_tls_ctx_key")) || - !(conf->tls_free = dlsym(lib, "uh_tls_ctx_free")) || - !(conf->tls_accept = dlsym(lib, "uh_tls_client_accept")) || - !(conf->tls_close = dlsym(lib, "uh_tls_client_close")) || - !(conf->tls_recv = dlsym(lib, "uh_tls_client_recv")) || - !(conf->tls_send = dlsym(lib, "uh_tls_client_send"))) - { - fprintf(stderr, - "Error: Failed to lookup required symbols " - "in TLS plugin: %s\n", dlerror() - ); - exit(1); - } - - /* init SSL context */ - if (!(conf->tls = conf->tls_init())) - { - fprintf(stderr, "Error: Failed to initalize SSL context\n"); - exit(1); - } - } - - return 0; -} -#endif - -int main (int argc, char **argv) -{ - /* working structs */ - struct addrinfo hints; - struct sigaction sa; - struct config conf; - - /* maximum file descriptor number */ - int cur_fd = 0; - -#ifdef HAVE_TLS - int tls = 0; - int keys = 0; -#endif - - int bound = 0; - int nofork = 0; - - /* args */ - int opt; - char addr[128]; - char *port = NULL; - -#if defined(HAVE_LUA) || defined(HAVE_TLS) || defined(HAVE_UBUS) - /* library handle */ - void *lib; -#endif - - /* handle SIGPIPE, SIGINT, SIGTERM */ - sa.sa_flags = 0; - sigemptyset(&sa.sa_mask); - - sa.sa_handler = SIG_IGN; - sigaction(SIGPIPE, &sa, NULL); - - sa.sa_handler = uh_sigterm; - sigaction(SIGINT, &sa, NULL); - sigaction(SIGTERM, &sa, NULL); - - /* prepare addrinfo hints */ - memset(&hints, 0, sizeof(hints)); - hints.ai_family = AF_UNSPEC; - hints.ai_socktype = SOCK_STREAM; - hints.ai_flags = AI_PASSIVE; - - /* parse args */ - memset(&conf, 0, sizeof(conf)); - - uloop_init(); - - while ((opt = getopt(argc, argv, - "fSDRC:K:E:I:p:s:h:c:l:L:d:r:m:n:x:i:t:T:A:u:U:")) > 0) - { - switch(opt) - { - /* [addr:]port */ - case 'p': - case 's': - memset(addr, 0, sizeof(addr)); - - if ((port = strrchr(optarg, ':')) != NULL) - { - if ((optarg[0] == '[') && (port > optarg) && (port[-1] == ']')) - memcpy(addr, optarg + 1, - min(sizeof(addr), (int)(port - optarg) - 2)); - else - memcpy(addr, optarg, - min(sizeof(addr), (int)(port - optarg))); - - port++; - } - else - { - port = optarg; - } - -#ifdef HAVE_TLS - if (opt == 's') - { - if (uh_inittls(&conf)) - { - fprintf(stderr, - "Notice: TLS support is disabled, " - "ignoring '-s %s'\n", optarg - ); - continue; - } - - tls = 1; - } -#endif - - /* bind sockets */ - bound += uh_socket_bind(addr[0] ? addr : NULL, port, &hints, - (opt == 's'), &conf); - break; - -#ifdef HAVE_TLS - /* certificate */ - case 'C': - if (!uh_inittls(&conf)) - { - if (conf.tls_cert(conf.tls, optarg) < 1) - { - fprintf(stderr, - "Error: Invalid certificate file given\n"); - exit(1); - } - - keys++; - } - - break; - - /* key */ - case 'K': - if (!uh_inittls(&conf)) - { - if (conf.tls_key(conf.tls, optarg) < 1) - { - fprintf(stderr, - "Error: Invalid private key file given\n"); - exit(1); - } - - keys++; - } - - break; -#else - case 'C': - case 'K': - fprintf(stderr, - "Notice: TLS support not compiled, ignoring -%c\n", - opt); - break; -#endif - - /* docroot */ - case 'h': - if (! realpath(optarg, conf.docroot)) - { - fprintf(stderr, "Error: Invalid directory %s: %s\n", - optarg, strerror(errno)); - exit(1); - } - break; - - /* error handler */ - case 'E': - if ((strlen(optarg) == 0) || (optarg[0] != '/')) - { - fprintf(stderr, "Error: Invalid error handler: %s\n", - optarg); - exit(1); - } - conf.error_handler = optarg; - break; - - /* index file */ - case 'I': - if ((strlen(optarg) == 0) || (optarg[0] == '/')) - { - fprintf(stderr, "Error: Invalid index page: %s\n", - optarg); - exit(1); - } - conf.index_file = optarg; - break; - - /* don't follow symlinks */ - case 'S': - conf.no_symlinks = 1; - break; - - /* don't list directories */ - case 'D': - conf.no_dirlists = 1; - break; - - case 'R': - conf.rfc1918_filter = 1; - break; - - case 'n': - conf.max_requests = atoi(optarg); - break; - -#ifdef HAVE_CGI - /* cgi prefix */ - case 'x': - conf.cgi_prefix = optarg; - break; - - /* interpreter */ - case 'i': - if ((optarg[0] == '.') && (port = strchr(optarg, '='))) - { - *port++ = 0; - uh_interpreter_add(optarg, port); - } - else - { - fprintf(stderr, "Error: Invalid interpreter: %s\n", - optarg); - exit(1); - } - break; -#else - case 'x': - case 'i': - fprintf(stderr, - "Notice: CGI support not compiled, ignoring -%c\n", - opt); - break; -#endif - -#ifdef HAVE_LUA - /* lua prefix */ - case 'l': - conf.lua_prefix = optarg; - break; - - /* lua handler */ - case 'L': - conf.lua_handler = optarg; - break; -#else - case 'l': - case 'L': - fprintf(stderr, - "Notice: Lua support not compiled, ignoring -%c\n", - opt); - break; -#endif - -#ifdef HAVE_UBUS - /* ubus prefix */ - case 'u': - conf.ubus_prefix = optarg; - break; - - /* ubus socket */ - case 'U': - conf.ubus_socket = optarg; - break; -#else - case 'u': - case 'U': - fprintf(stderr, - "Notice: UBUS support not compiled, ignoring -%c\n", - opt); - break; -#endif - -#if defined(HAVE_CGI) || defined(HAVE_LUA) - /* script timeout */ - case 't': - conf.script_timeout = atoi(optarg); - break; -#endif - - /* network timeout */ - case 'T': - conf.network_timeout = atoi(optarg); - break; - - /* tcp keep-alive */ - case 'A': - conf.tcp_keepalive = atoi(optarg); - break; - - /* no fork */ - case 'f': - nofork = 1; - break; - - /* urldecode */ - case 'd': - if ((port = malloc(strlen(optarg)+1)) != NULL) - { - /* "decode" plus to space to retain compat */ - for (opt = 0; optarg[opt]; opt++) - if (optarg[opt] == '+') - optarg[opt] = ' '; - /* opt now contains strlen(optarg) -- no need to re-scan */ - memset(port, 0, opt+1); - if (uh_urldecode(port, opt, optarg, opt) < 0) - fprintf(stderr, "uhttpd: invalid encoding\n"); - - printf("%s", port); - free(port); - exit(0); - } - break; - - /* basic auth realm */ - case 'r': - conf.realm = optarg; - break; - - /* md5 crypt */ - case 'm': - printf("%s\n", crypt(optarg, "$1$")); - exit(0); - break; - - /* config file */ - case 'c': - conf.file = optarg; - break; - - default: - fprintf(stderr, - "Usage: %s -p [addr:]port [-h docroot]\n" - " -f Do not fork to background\n" - " -c file Configuration file, default is '/etc/httpd.conf'\n" - " -p [addr:]port Bind to specified address and port, multiple allowed\n" -#ifdef HAVE_TLS - " -s [addr:]port Like -p but provide HTTPS on this port\n" - " -C file ASN.1 server certificate file\n" - " -K file ASN.1 server private key file\n" -#endif - " -h directory Specify the document root, default is '.'\n" - " -E string Use given virtual URL as 404 error handler\n" - " -I string Use given filename as index page for directories\n" - " -S Do not follow symbolic links outside of the docroot\n" - " -D Do not allow directory listings, send 403 instead\n" - " -R Enable RFC1918 filter\n" - " -n count Maximum allowed number of concurrent requests\n" -#ifdef HAVE_LUA - " -l string URL prefix for Lua handler, default is '/lua'\n" - " -L file Lua handler script, omit to disable Lua\n" -#endif -#ifdef HAVE_UBUS - " -u string URL prefix for HTTP/JSON handler\n" - " -U file Override ubus socket path\n" -#endif -#ifdef HAVE_CGI - " -x string URL prefix for CGI handler, default is '/cgi-bin'\n" - " -i .ext=path Use interpreter at path for files with the given extension\n" -#endif -#if defined(HAVE_CGI) || defined(HAVE_LUA) || defined(HAVE_UBUS) - " -t seconds CGI, Lua and UBUS script timeout in seconds, default is 60\n" -#endif - " -T seconds Network timeout in seconds, default is 30\n" - " -d string URL decode given string\n" - " -r string Specify basic auth realm\n" - " -m string MD5 crypt given string\n" - "\n", argv[0] - ); - - exit(1); - } - } - -#ifdef HAVE_TLS - if ((tls == 1) && (keys < 2)) - { - fprintf(stderr, "Error: Missing private key or certificate file\n"); - exit(1); - } -#endif - - if (bound < 1) - { - fprintf(stderr, "Error: No sockets bound, unable to continue\n"); - exit(1); - } - - /* default docroot */ - if (!conf.docroot[0] && !realpath(".", conf.docroot)) - { - fprintf(stderr, "Error: Can not determine default document root: %s\n", - strerror(errno)); - exit(1); - } - - /* default realm */ - if (!conf.realm) - conf.realm = "Protected Area"; - - /* config file */ - uh_config_parse(&conf); - - /* default max requests */ - if (conf.max_requests <= 0) - conf.max_requests = 3; - - /* default network timeout */ - if (conf.network_timeout <= 0) - conf.network_timeout = 30; - -#if defined(HAVE_CGI) || defined(HAVE_LUA) || defined(HAVE_UBUS) - /* default script timeout */ - if (conf.script_timeout <= 0) - conf.script_timeout = 60; -#endif - -#ifdef HAVE_CGI - /* default cgi prefix */ - if (!conf.cgi_prefix) - conf.cgi_prefix = "/cgi-bin"; -#endif - -#ifdef HAVE_LUA - /* load Lua plugin */ - if (!(lib = dlopen("uhttpd_lua.so", RTLD_LAZY | RTLD_GLOBAL))) - { - fprintf(stderr, - "Notice: Unable to load Lua plugin - disabling Lua support! " - "(Reason: %s)\n", dlerror()); - } - else - { - /* resolve functions */ - if (!(conf.lua_init = dlsym(lib, "uh_lua_init")) || - !(conf.lua_close = dlsym(lib, "uh_lua_close")) || - !(conf.lua_request = dlsym(lib, "uh_lua_request"))) - { - fprintf(stderr, - "Error: Failed to lookup required symbols " - "in Lua plugin: %s\n", dlerror() - ); - exit(1); - } - - /* init Lua runtime if handler is specified */ - if (conf.lua_handler) - { - /* default lua prefix */ - if (!conf.lua_prefix) - conf.lua_prefix = "/lua"; - - conf.lua_state = conf.lua_init(&conf); - } - } -#endif - -#ifdef HAVE_UBUS - /* load ubus plugin */ - if (!(lib = dlopen("uhttpd_ubus.so", RTLD_LAZY | RTLD_GLOBAL))) - { - fprintf(stderr, - "Notice: Unable to load ubus plugin - disabling ubus support! " - "(Reason: %s)\n", dlerror()); - } - else if (conf.ubus_prefix) - { - /* resolve functions */ - if (!(conf.ubus_init = dlsym(lib, "uh_ubus_init")) || - !(conf.ubus_close = dlsym(lib, "uh_ubus_close")) || - !(conf.ubus_request = dlsym(lib, "uh_ubus_request"))) - { - fprintf(stderr, - "Error: Failed to lookup required symbols " - "in ubus plugin: %s\n", dlerror() - ); - exit(1); - } - - /* initialize ubus */ - conf.ubus_state = conf.ubus_init(&conf); - } -#endif - - /* fork (if not disabled) */ - if (!nofork) - { - switch (fork()) - { - case -1: - perror("fork()"); - exit(1); - - case 0: - /* daemon setup */ - if (chdir("/")) - perror("chdir()"); - - if ((cur_fd = open("/dev/null", O_WRONLY)) > -1) - dup2(cur_fd, 0); - - if ((cur_fd = open("/dev/null", O_RDONLY)) > -1) - dup2(cur_fd, 1); - - if ((cur_fd = open("/dev/null", O_RDONLY)) > -1) - dup2(cur_fd, 2); - - break; - - default: - exit(0); - } - } - - /* server main loop */ - uloop_run(); - -#ifdef HAVE_LUA - /* destroy the Lua state */ - if (conf.lua_state != NULL) - conf.lua_close(conf.lua_state); -#endif - -#ifdef HAVE_UBUS - /* destroy the ubus state */ - if (conf.ubus_state != NULL) - conf.ubus_close(conf.ubus_state); -#endif - - return 0; -} |