2 * uhttpd - Tiny single-threaded httpd
4 * Copyright (C) 2010-2013 Jo-Philipp Wich <xm@subsignal.org>
5 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 #include <netinet/in.h>
27 #include <libubox/list.h>
28 #include <libubox/uloop.h>
29 #include <libubox/ustream.h>
30 #include <libubox/blob.h>
31 #include <libubox/utils.h>
34 #include <json-c/json.h>
37 #include <libubox/ustream-ssl.h>
42 #define UH_LIMIT_CLIENTS 64
44 #define __enum_header(_name, _val) HDR_##_name,
45 #define __blobmsg_header(_name, _val) [HDR_##_name] = { .name = #_val, .type = BLOBMSG_TYPE_STRING },
50 struct list_head list
;
56 struct list_head list
;
66 const char *error_handler
;
67 const char *cgi_prefix
;
68 const char *cgi_docroot_path
;
70 const char *ubus_prefix
;
71 const char *ubus_socket
;
78 int max_script_requests
;
85 struct list_head cgi_alias
;
86 struct list_head lua_prefix
;
90 struct list_head list
;
112 enum http_user_agent
{
124 struct http_request
{
125 enum http_method method
;
126 enum http_version version
;
127 enum http_user_agent ua
;
131 bool connection_close
;
132 bool disable_chunked
;
133 uint8_t transfer_chunked
;
134 const struct auth_realm
*realm
;
143 CLIENT_STATE_CLEANUP
,
147 struct list_head list
;
160 const struct interpreter
*ip
;
169 struct ustream_fd sfd
;
170 struct uloop_process proc
;
171 struct uloop_timeout timeout
;
181 void (*header_cb
)(struct relay
*r
, const char *name
, const char *value
);
182 void (*header_end
)(struct relay
*r
);
183 void (*close
)(struct relay
*r
, int ret
);
186 struct dispatch_proc
{
187 struct uloop_timeout timeout
;
189 struct uloop_fd wrfd
;
195 struct dispatch_handler
{
196 struct list_head list
;
199 bool (*check_url
)(const char *url
);
200 bool (*check_path
)(struct path_info
*pi
, const char *url
);
201 void (*handle_request
)(struct client
*cl
, char *url
, struct path_info
*pi
);
205 struct dispatch_ubus
{
206 struct ubus_request req
;
208 struct uloop_timeout timeout
;
209 struct json_tokener
*jstok
;
210 struct json_object
*jsobj
;
211 struct json_object
*jsobj_cur
;
225 int (*data_send
)(struct client
*cl
, const char *data
, int len
);
226 void (*data_done
)(struct client
*cl
);
227 void (*write_cb
)(struct client
*cl
);
228 void (*close_fds
)(struct client
*cl
);
229 void (*free
)(struct client
*cl
);
232 void (*req_free
)(struct client
*cl
);
239 struct blob_attr
**hdr
;
242 struct dispatch_proc proc
;
244 struct dispatch_ubus ubus
;
250 struct list_head list
;
255 struct ustream_fd sfd
;
257 struct ustream_ssl ssl
;
259 struct uloop_timeout timeout
;
262 enum client_state state
;
266 struct http_request request
;
267 struct uh_addr srv_addr
, peer_addr
;
270 struct blob_buf hdr_response
;
271 struct dispatch dispatch
;
274 extern char uh_buf
[4096];
275 extern int n_clients
;
276 extern struct config conf
;
277 extern const char * const http_versions
[];
278 extern const char * const http_methods
[];
279 extern struct dispatch_handler cgi_dispatch
;
281 void uh_index_add(const char *filename
);
283 bool uh_accept_client(int fd
, bool tls
);
285 void uh_unblock_listeners(void);
286 void uh_setup_listeners(void);
287 int uh_socket_bind(const char *host
, const char *port
, bool tls
);
289 int uh_first_tls_port(int family
);
291 bool uh_use_chunked(struct client
*cl
);
292 void uh_chunk_write(struct client
*cl
, const void *data
, int len
);
293 void uh_chunk_vprintf(struct client
*cl
, const char *format
, va_list arg
);
296 uh_chunk_printf(struct client
*cl
, const char *format
, ...);
298 void uh_chunk_eof(struct client
*cl
);
299 void uh_request_done(struct client
*cl
);
301 void uh_http_header(struct client
*cl
, int code
, const char *summary
);
303 uh_client_error(struct client
*cl
, int code
, const char *summary
, const char *fmt
, ...);
305 void uh_handle_request(struct client
*cl
);
306 void client_poll_post_data(struct client
*cl
);
307 void uh_client_read_cb(struct client
*cl
);
308 void uh_client_notify_state(struct client
*cl
);
310 void uh_auth_add(const char *path
, const char *user
, const char *pass
);
311 bool uh_auth_check(struct client
*cl
, const char *path
, const char *auth
,
312 char **uptr
, char **pptr
);
314 void uh_close_listen_fds(void);
315 void uh_close_fds(void);
317 void uh_interpreter_add(const char *ext
, const char *path
);
318 void uh_dispatch_add(struct dispatch_handler
*d
);
320 void uh_relay_open(struct client
*cl
, struct relay
*r
, int fd
, int pid
);
321 void uh_relay_close(struct relay
*r
, int ret
);
322 void uh_relay_free(struct relay
*r
);
323 void uh_relay_kill(struct client
*cl
, struct relay
*r
);
325 struct env_var
*uh_get_process_vars(struct client
*cl
, struct path_info
*pi
);
326 bool uh_create_process(struct client
*cl
, struct path_info
*pi
, char *url
,
327 void (*cb
)(struct client
*cl
, struct path_info
*pi
, char *url
));
329 int uh_plugin_init(const char *name
);
330 void uh_plugin_post_init(void);
332 int uh_handler_add(const char *file
);
333 int uh_handler_run(struct client
*cl
, char **url
, bool fallback
);
335 struct path_info
*uh_path_lookup(struct client
*cl
, const char *url
);
337 static inline void uh_client_ref(struct client
*cl
)
342 static inline void uh_client_unref(struct client
*cl
)
347 if (cl
->state
== CLIENT_STATE_CLEANUP
)
348 ustream_state_change(cl
->us
);