2 * uhttpd - Tiny single-threaded httpd
4 * Copyright (C) 2010-2012 Jo-Philipp Wich <xm@subsignal.org>
5 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
20 #include <sys/types.h>
21 #include <sys/socket.h>
22 #include <netinet/in.h>
29 #include <libubox/usock.h>
34 static int run_server(void)
43 static void uh_config_parse(void)
45 const char *path = conf.file;
53 path = "/etc/httpd.conf";
59 memset(line, 0, sizeof(line));
61 while (fgets(line, sizeof(line) - 1, c)) {
62 if ((line[0] == '/') && (strchr(line, ':') != NULL)) {
63 if (!(col1 = strchr(line, ':')) || (*col1++ = 0) ||
64 !(col2 = strchr(col1, ':')) || (*col2++ = 0) ||
65 !(eol = strchr(col2, '\n')) || (*eol++ = 0))
68 uh_auth_add(line, col1, col2);
69 } else if (!strncmp(line, "I:", 2)) {
70 if (!(col1 = strchr(line, ':')) || (*col1++ = 0) ||
71 !(eol = strchr(col1, '\n')) || (*eol++ = 0))
74 uh_index_add(strdup(col1));
75 } else if (!strncmp(line, "E404:", 5)) {
76 if (!(col1 = strchr(line, ':')) || (*col1++ = 0) ||
77 !(eol = strchr(col1, '\n')) || (*eol++ = 0))
80 conf.error_handler = strdup(col1);
83 else if ((line[0] == '*') && (strchr(line, ':') != NULL)) {
84 if (!(col1 = strchr(line, '*')) || (*col1++ = 0) ||
85 !(col2 = strchr(col1, ':')) || (*col2++ = 0) ||
86 !(eol = strchr(col2, '\n')) || (*eol++ = 0))
89 if (!uh_interpreter_add(col1, col2))
91 "Unable to add interpreter %s for extension %s: "
92 "Out of memory\n", col2, col1
101 static int add_listener_arg(char *arg, bool tls)
107 s = strrchr(arg, ':');
114 return uh_socket_bind(host, port, tls);
117 static int usage(const char *name)
120 "Usage: %s -p [addr:]port -h docroot\n"
121 " -f Do not fork to background\n"
122 " -c file Configuration file, default is '/etc/httpd.conf'\n"
123 " -p [addr:]port Bind to specified address and port, multiple allowed\n"
125 " -s [addr:]port Like -p but provide HTTPS on this port\n"
126 " -C file ASN.1 server certificate file\n"
127 " -K file ASN.1 server private key file\n"
129 " -h directory Specify the document root, default is '.'\n"
130 " -E string Use given virtual URL as 404 error handler\n"
131 " -I string Use given filename as index for directories, multiple allowed\n"
132 " -S Do not follow symbolic links outside of the docroot\n"
133 " -D Do not allow directory listings, send 403 instead\n"
134 " -R Enable RFC1918 filter\n"
135 " -n count Maximum allowed number of concurrent requests\n"
137 " -l string URL prefix for Lua handler, default is '/lua'\n"
138 " -L file Lua handler script, omit to disable Lua\n"
141 " -u string URL prefix for HTTP/JSON handler\n"
142 " -U file Override ubus socket path\n"
145 " -x string URL prefix for CGI handler, default is '/cgi-bin'\n"
146 " -i .ext=path Use interpreter at path for files with the given extension\n"
148 #if defined(HAVE_CGI) || defined(HAVE_LUA) || defined(HAVE_UBUS)
149 " -t seconds CGI, Lua and UBUS script timeout in seconds, default is 60\n"
151 " -T seconds Network timeout in seconds, default is 30\n"
152 " -d string URL decode given string\n"
153 " -r string Specify basic auth realm\n"
154 " -m string MD5 crypt given string\n"
160 static void init_defaults(void)
162 conf.script_timeout = 60;
163 conf.network_timeout = 30;
164 conf.http_keepalive = 0; /* fixme */
165 conf.max_requests = 3;
166 conf.realm = "Protected Area";
167 conf.cgi_prefix = "/cgi-bin";
169 uh_index_add("index.html");
170 uh_index_add("index.htm");
171 uh_index_add("default.html");
172 uh_index_add("default.htm");
175 int main(int argc, char **argv)
184 signal(SIGPIPE, SIG_IGN);
186 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) {
194 bound += add_listener_arg(optarg, tls);
198 if (!realpath(optarg, conf.docroot)) {
199 fprintf(stderr, "Error: Invalid directory %s: %s\n",
200 optarg, strerror(errno));
206 if (optarg[0] != '/') {
207 fprintf(stderr, "Error: Invalid error handler: %s\n",
211 conf.error_handler = optarg;
215 if (optarg[0] == '/') {
216 fprintf(stderr, "Error: Invalid index page: %s\n",
220 uh_index_add(optarg);
224 conf.no_symlinks = 1;
228 conf.no_dirlists = 1;
232 conf.rfc1918_filter = 1;
236 conf.max_requests = atoi(optarg);
240 conf.script_timeout = atoi(optarg);
244 conf.network_timeout = atoi(optarg);
248 conf.tcp_keepalive = atoi(optarg);
256 port = alloca(strlen(optarg) + 1);
260 /* "decode" plus to space to retain compat */
261 for (opt = 0; optarg[opt]; opt++)
262 if (optarg[opt] == '+')
265 /* opt now contains strlen(optarg) -- no need to re-scan */
266 if (uh_urldecode(port, opt, optarg, opt) < 0) {
267 fprintf(stderr, "uhttpd: invalid encoding\n");
274 /* basic auth realm */
281 printf("%s\n", crypt(optarg, "$1$"));
291 return usage(argv[0]);
298 fprintf(stderr, "Error: No sockets bound, unable to continue\n");
302 /* fork (if not disabled) */
314 cur_fd = open("/dev/null", O_WRONLY);