summaryrefslogtreecommitdiff
path: root/package/uhttpd/src/uhttpd.h
blob: 69fe21a418824f7f2ffb237b912e7fe61f0c07a9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
/*
 * uhttpd - Tiny single-threaded httpd - Main header
 *
 *   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.
 */

#ifndef _UHTTPD_

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/select.h>
#include <sys/wait.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <linux/limits.h>
#include <netdb.h>
#include <ctype.h>
#include <errno.h>
#include <dlfcn.h>

#include <libubox/list.h>
#include <libubox/uloop.h>


#ifdef HAVE_LUA
#include <lua.h>
#endif

#ifdef HAVE_TLS
#include <openssl/ssl.h>
#endif

/* uClibc... */
#ifndef SOL_TCP
#define SOL_TCP	6
#endif

#ifdef DEBUG
#define D(...) fprintf(stderr, __VA_ARGS__)
#else
#define D(...)
#endif


#define UH_LIMIT_MSGHEAD	4096
#define UH_LIMIT_HEADERS	64

#define UH_LIMIT_CLIENTS	64

#define UH_HTTP_MSG_GET		0
#define UH_HTTP_MSG_HEAD	1
#define UH_HTTP_MSG_POST	2

#define UH_SOCK_CLIENT		0
#define UH_SOCK_SERVER		1

struct listener;
struct client;
struct interpreter;
struct http_request;
struct uh_ubus_state;

struct config {
	char docroot[PATH_MAX];
	char *realm;
	char *file;
	char *index_file;
	char *error_handler;
	int no_symlinks;
	int no_dirlists;
	int network_timeout;
	int rfc1918_filter;
	int tcp_keepalive;
	int max_requests;
#ifdef HAVE_CGI
	char *cgi_prefix;
#endif
#ifdef HAVE_LUA
	char *lua_prefix;
	char *lua_handler;
	lua_State *lua_state;
	lua_State * (*lua_init) (const struct config *conf);
	void (*lua_close) (lua_State *L);
	bool (*lua_request) (struct client *cl, lua_State *L);
#endif
#ifdef HAVE_UBUS
	char *ubus_prefix;
	char *ubus_socket;
	void *ubus_state;
	struct uh_ubus_state * (*ubus_init) (const struct config *conf);
	void (*ubus_close) (struct uh_ubus_state *state);
	bool (*ubus_request) (struct client *cl, struct uh_ubus_state *state);
#endif
#if defined(HAVE_CGI) || defined(HAVE_LUA) || defined(HAVE_UBUS)
	int script_timeout;
#endif
#ifdef HAVE_TLS
	char *cert;
	char *key;
	SSL_CTX *tls;
	SSL_CTX * (*tls_init) (void);
	int (*tls_cert) (SSL_CTX *c, const char *file);
	int (*tls_key) (SSL_CTX *c, const char *file);
	void (*tls_free) (struct listener *l);
	int (*tls_accept) (struct client *c);
	void (*tls_close) (struct client *c);
	int (*tls_recv) (struct client *c, char *buf, int len);
	int (*tls_send) (struct client *c, const char *buf, int len);
#endif
};

struct http_request {
	int	method;
	float version;
	int redirect_status;
	char *url;
	char *headers[UH_LIMIT_HEADERS];
	struct auth_realm *realm;
};

struct http_response {
	int statuscode;
	char *statusmsg;
	char *headers[UH_LIMIT_HEADERS];
};

struct listener {
	struct uloop_fd fd;
	int socket;
	int n_clients;
	struct sockaddr_in6 addr;
	struct config *conf;
#ifdef HAVE_TLS
	SSL_CTX *tls;
#endif
	struct listener *next;
};

struct client {
#ifdef HAVE_TLS
	SSL *tls;
#endif
	struct uloop_fd fd;
	struct uloop_fd pipe;
	struct uloop_process proc;
	struct uloop_timeout timeout;
	bool (*cb)(struct client *);
	void *priv;
	bool dispatched;
	bool dead;
	struct {
		char buf[UH_LIMIT_MSGHEAD];
		char *ptr;
		int len;
	} httpbuf;
	struct listener *server;
	struct http_request request;
	struct http_response response;
	struct sockaddr_in6 servaddr;
	struct sockaddr_in6 peeraddr;
	struct client *next;
};

struct client_light {
#ifdef HAVE_TLS
	SSL *tls;
#endif
	struct uloop_fd fd;
};

struct auth_realm {
	char path[PATH_MAX];
	char user[32];
	char pass[128];
	struct auth_realm *next;
};

#ifdef HAVE_CGI
struct interpreter {
	char path[PATH_MAX];
	char extn[32];
	struct interpreter *next;
};
#endif

#endif