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/*
* 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
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
};
enum http_method {
UH_HTTP_MSG_GET,
UH_HTTP_MSG_POST,
UH_HTTP_MSG_HEAD,
};
extern const char *http_methods[];
enum http_version {
UH_HTTP_VER_0_9,
UH_HTTP_VER_1_0,
UH_HTTP_VER_1_1,
};
extern const char *http_versions[];
struct http_request {
enum http_method method;
enum http_version 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 rpipe;
struct uloop_fd wpipe;
struct uloop_process proc;
struct uloop_timeout timeout;
bool (*cb)(struct client *);
void *priv;
bool dispatched;
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
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