ubus: remove session api from plugin and check access via ubus call to let other...
[project/uhttpd.git] / main.c
diff --git a/main.c b/main.c
index 09c66c4..ebc123c 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,22 +1,25 @@
 /*
  * uhttpd - Tiny single-threaded httpd
  *
- *   Copyright (C) 2010-2012 Jo-Philipp Wich <xm@subsignal.org>
- *   Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *   Copyright (C) 2010-2013 Jo-Philipp Wich <xm@subsignal.org>
+ *   Copyright (C) 2013 Felix Fietkau <nbd@openwrt.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
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
  *
- *      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.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#define _BSD_SOURCE
+#define _GNU_SOURCE
+#define _XOPEN_SOURCE  700
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <libubox/usock.h>
 
 #include "uhttpd.h"
+#include "tls.h"
 
+char uh_buf[4096];
 
 static int run_server(void)
 {
        uloop_init();
        uh_setup_listeners();
+       uh_plugin_post_init();
        uloop_run();
 
        return 0;
@@ -79,20 +85,14 @@ static void uh_config_parse(void)
 
                        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
-                               );
+                       uh_interpreter_add(col1, col2);
                }
-#endif
        }
 
        fclose(c);
@@ -132,7 +132,8 @@ static int usage(const char *name)
                "       -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"
+               "       -n count        Maximum allowed number of concurrent script requests\n"
+               "       -N count        Maximum allowed number of concurrent connections\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"
@@ -141,14 +142,11 @@ static int usage(const char *name)
                "       -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"
+               "       -k seconds              HTTP keepalive timeout\n"
                "       -d string       URL decode given string\n"
                "       -r string       Specify basic auth realm\n"
                "       -m string       MD5 crypt given string\n"
@@ -159,9 +157,14 @@ static int usage(const char *name)
 
 static void init_defaults(void)
 {
+       conf.script_timeout = 60;
        conf.network_timeout = 30;
-       conf.http_keepalive = 0; /* fixme */
-       conf.max_requests = 3;
+       conf.http_keepalive = 20;
+       conf.max_script_requests = 3;
+       conf.max_connections = 100;
+       conf.realm = "Protected Area";
+       conf.cgi_prefix = "/cgi-bin";
+       conf.cgi_path = "/sbin:/usr/sbin:/bin:/usr/bin";
 
        uh_index_add("index.html");
        uh_index_add("index.htm");
@@ -169,6 +172,21 @@ static void init_defaults(void)
        uh_index_add("default.htm");
 }
 
+static void fixup_prefix(char *str)
+{
+       int len;
+
+       if (!str || !str[0])
+               return;
+
+       len = strlen(str) - 1;
+
+       while (len > 0 && str[len] == '/')
+               len--;
+
+       str[len + 1] = 0;
+}
+
 int main(int argc, char **argv)
 {
        bool nofork = false;
@@ -177,26 +195,50 @@ int main(int argc, char **argv)
        int cur_fd;
        int bound = 0;
 
+#ifdef HAVE_TLS
+       int n_tls = 0;
+       const char *tls_key = NULL, *tls_crt = NULL;
+#endif
+
+       BUILD_BUG_ON(sizeof(uh_buf) < PATH_MAX);
+
+       uh_dispatch_add(&cgi_dispatch);
        init_defaults();
        signal(SIGPIPE, SIG_IGN);
 
-       while ((ch = getopt(argc, argv, "fSDRC:K:E:I:p:s:h:c:l:L:d:r:m:n:x:i:t:T:A:u:U:")) != -1) {
-               bool tls = false;
-
+       while ((ch = getopt(argc, argv, "fSDRC:K:E:I:p:s:h:c:l:L:d:r:m:n:N:x:i:t:k:T:A:u:U:")) != -1) {
                switch(ch) {
+#ifdef HAVE_TLS
+               case 'C':
+                       tls_crt = optarg;
+                       break;
+
+               case 'K':
+                       tls_key = optarg;
+                       break;
+
                case 's':
-                       tls = true;
+                       n_tls++;
                        /* fall through */
+#else
+               case 'C':
+               case 'K':
+               case 's':
+                       fprintf(stderr, "uhttpd: TLS support not compiled, "
+                                       "ignoring -%c\n", opt);
+                       break;
+#endif
                case 'p':
-                       bound += add_listener_arg(optarg, tls);
+                       bound += add_listener_arg(optarg, (ch == 's'));
                        break;
 
                case 'h':
-                       if (!realpath(optarg, conf.docroot)) {
+                       if (!realpath(optarg, uh_buf)) {
                                fprintf(stderr, "Error: Invalid directory %s: %s\n",
                                                optarg, strerror(errno));
                                exit(1);
                        }
+                       conf.docroot = strdup(uh_buf);
                        break;
 
                case 'E':
@@ -230,7 +272,28 @@ int main(int argc, char **argv)
                        break;
 
                case 'n':
-                       conf.max_requests = atoi(optarg);
+                       conf.max_script_requests = atoi(optarg);
+                       break;
+
+               case 'N':
+                       conf.max_connections = atoi(optarg);
+                       break;
+
+               case 'x':
+                       fixup_prefix(optarg);
+                       conf.cgi_prefix = optarg;
+                       break;
+
+               case 'i':
+                       port = strchr(optarg, '=');
+                       if (optarg[0] != '.' || !port) {
+                               fprintf(stderr, "Error: Invalid interpreter: %s\n",
+                                               optarg);
+                               exit(1);
+                       }
+
+                       *port++ = 0;
+                       uh_interpreter_add(optarg, port);
                        break;
 
                case 't':
@@ -241,6 +304,10 @@ int main(int argc, char **argv)
                        conf.network_timeout = atoi(optarg);
                        break;
 
+               case 'k':
+                       conf.http_keepalive = atoi(optarg);
+                       break;
+
                case 'A':
                        conf.tcp_keepalive = atoi(optarg);
                        break;
@@ -284,6 +351,36 @@ int main(int argc, char **argv)
                        conf.file = optarg;
                        break;
 
+#ifdef HAVE_LUA
+               case 'l':
+                       conf.lua_prefix = optarg;
+                       break;
+
+               case 'L':
+                       conf.lua_handler = optarg;
+                       break;
+#else
+               case 'l':
+               case 'L':
+                       fprintf(stderr, "uhttpd: Lua support not compiled, "
+                                       "ignoring -%c\n", opt);
+                       break;
+#endif
+#ifdef HAVE_UBUS
+               case 'u':
+                       conf.ubus_prefix = optarg;
+                       break;
+
+               case 'U':
+                       conf.ubus_socket = optarg;
+                       break;
+#else
+               case 'u':
+               case 'U':
+                       fprintf(stderr, "uhttpd: UBUS support not compiled, "
+                                       "ignoring -%c\n", opt);
+                       break;
+#endif
                default:
                        return usage(argv[0]);
                }
@@ -296,6 +393,34 @@ int main(int argc, char **argv)
                return 1;
        }
 
+#ifdef HAVE_TLS
+       if (n_tls) {
+               if (!tls_crt || !tls_key) {
+                       fprintf(stderr, "Please specify a certificate and "
+                                       "a key file to enable SSL support\n");
+                       return 1;
+               }
+
+               if (uh_tls_init(tls_key, tls_crt))
+                   return 1;
+       }
+#endif
+
+#ifdef HAVE_LUA
+       if (conf.lua_handler || conf.lua_prefix) {
+               if (!conf.lua_handler || !conf.lua_prefix) {
+                       fprintf(stderr, "Need handler and prefix to enable Lua support\n");
+                       return 1;
+               }
+               if (uh_plugin_init("uhttpd_lua.so"))
+                       return 1;
+       }
+#endif
+#ifdef HAVE_UBUS
+       if (conf.ubus_prefix && uh_plugin_init("uhttpd_ubus.so"))
+               return 1;
+#endif
+
        /* fork (if not disabled) */
        if (!nofork) {
                switch (fork()) {