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/*
* uhttpd - Tiny single-threaded httpd - Main header
*
* Copyright (C) 2010-2012 Jo-Philipp Wich <xm@subsignal.org>
* Copyright (C) 2012 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
*
* 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_H
#define __UHTTPD_H
#include <netinet/in.h>
#include <limits.h>
#include <dirent.h>
#include <libubox/list.h>
#include <libubox/uloop.h>
#include <libubox/ustream.h>
#include <libubox/blob.h>
#include <libubox/utils.h>
#include "utils.h"
#define UH_LIMIT_CLIENTS 64
#define __enum_header(_name) HDR_##_name,
#define __blobmsg_header(_name) [HDR_##_name] = { .name = #_name, .type = BLOBMSG_TYPE_STRING },
struct client;
struct config {
const char *docroot;
const char *realm;
const char *file;
const char *error_handler;
const char *cgi_prefix;
const char *cgi_path;
int no_symlinks;
int no_dirlists;
int network_timeout;
int rfc1918_filter;
int tcp_keepalive;
int max_requests;
int http_keepalive;
int script_timeout;
};
struct auth_realm {
struct list_head list;
const char *path;
const char *user;
const char *pass;
};
enum http_method {
UH_HTTP_MSG_GET,
UH_HTTP_MSG_POST,
UH_HTTP_MSG_HEAD,
};
enum http_version {
UH_HTTP_VER_0_9,
UH_HTTP_VER_1_0,
UH_HTTP_VER_1_1,
};
struct http_request {
enum http_method method;
enum http_version version;
bool expect_cont;
int redirect_status;
const char *url;
const struct auth_realm *realm;
};
enum client_state {
CLIENT_STATE_INIT,
CLIENT_STATE_HEADER,
CLIENT_STATE_DATA,
CLIENT_STATE_DONE,
CLIENT_STATE_CLOSE,
};
struct interpreter {
struct list_head list;
const char *path;
const char *ext;
};
struct path_info {
const char *root;
const char *phys;
const char *name;
const char *info;
const char *query;
const char *auth;
bool redirected;
struct stat stat;
const struct interpreter *ip;
};
struct env_var {
const char *name;
const char *value;
};
struct relay {
struct ustream_fd sfd;
struct uloop_process proc;
struct client *cl;
bool process_done;
int ret;
int header_ofs;
void (*header_cb)(struct relay *r, const char *name, const char *value);
void (*header_end)(struct relay *r);
void (*close)(struct relay *r, int ret);
};
struct dispatch_handler {
struct list_head list;
bool (*check_url)(const char *url);
bool (*check_path)(struct path_info *pi, const char *url);
void (*handle_request)(struct client *cl, const char *url, struct path_info *pi);
};
struct dispatch {
void (*write_cb)(struct client *cl);
void (*close_fds)(struct client *cl);
void (*free)(struct client *cl);
union {
struct {
struct blob_attr **hdr;
int fd;
} file;
struct {
struct blob_buf hdr;
struct relay r;
int status_code;
char *status_msg;
} proc;
};
};
struct client {
struct list_head list;
int id;
struct ustream *us;
struct ustream_fd sfd;
#ifdef HAVE_TLS
struct ustream_ssl stream_ssl;
#endif
struct uloop_timeout timeout;
enum client_state state;
struct http_request request;
struct uh_addr srv_addr, peer_addr;
struct blob_buf hdr;
struct dispatch dispatch;
};
extern char uh_buf[4096];
extern int n_clients;
extern struct config conf;
extern const char * const http_versions[];
extern const char * const http_methods[];
extern struct dispatch_handler cgi_dispatch;
void uh_index_add(const char *filename);
void uh_accept_client(int fd);
void uh_unblock_listeners(void);
void uh_setup_listeners(void);
int uh_socket_bind(const char *host, const char *port, bool tls);
bool uh_use_chunked(struct client *cl);
void uh_chunk_write(struct client *cl, const void *data, int len);
void uh_chunk_vprintf(struct client *cl, const char *format, va_list arg);
void __printf(2, 3)
uh_chunk_printf(struct client *cl, const char *format, ...);
void uh_chunk_eof(struct client *cl);
void uh_request_done(struct client *cl);
void uh_http_header(struct client *cl, int code, const char *summary);
void __printf(4, 5)
uh_client_error(struct client *cl, int code, const char *summary, const char *fmt, ...);
void uh_handle_request(struct client *cl);
void uh_auth_add(const char *path, const char *user, const char *pass);
bool uh_auth_check(struct client *cl, struct path_info *pi);
void uh_close_listen_fds(void);
void uh_close_fds(void);
void uh_interpreter_add(const char *ext, const char *path);
void uh_dispatch_add(struct dispatch_handler *d);
void uh_relay_open(struct client *cl, struct relay *r, int fd, int pid);
void uh_relay_close(struct relay *r, int ret);
void uh_relay_free(struct relay *r);
struct env_var *uh_get_process_vars(struct client *cl, struct path_info *pi);
bool uh_create_process(struct client *cl, struct path_info *pi,
void (*cb)(struct client *cl, struct path_info *pi, int fd));
#endif
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