osd-contiki/apps/httpd-ws/httpd-ws.h
Joakim Eriksson 51b73127e9 * Simple JSON parser and generator.
* Simple HTTP webservice with support for both receiving and sending HTTP requests.
* json-ws example that optionally push sensor data to COSM over IPv6.
2012-06-12 16:42:16 +02:00

126 lines
4.4 KiB
C

/*
* Copyright (c) 2010-2012, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*/
/**
* \file
* A simple webserver for web services
* \author
* Adam Dunkels <adam@sics.se>
* Niclas Finne <nfi@sics.se>
* Joakim Eriksson <joakime@sics.se>
*/
#ifndef __HTTPD_WS_H__
#define __HTTPD_WS_H__
#include "contiki-net.h"
#ifndef WEBSERVER_CONF_CFS_PATHLEN
#define HTTPD_PATHLEN 80
#else /* WEBSERVER_CONF_CFS_CONNS */
#define HTTPD_PATHLEN WEBSERVER_CONF_CFS_PATHLEN
#endif /* WEBSERVER_CONF_CFS_CONNS */
#ifndef WEBSERVER_CONF_INBUF_SIZE
#define HTTPD_INBUF_SIZE (HTTPD_PATHLEN + 90)
#else /* WEBSERVER_CONF_INBUF_SIZE */
#define HTTPD_INBUF_SIZE WEBSERVER_CONF_INBUF_SIZE
#endif /* WEBSERVER_CONF_INBUF_SIZE */
#if HTTPD_INBUF_SIZE < UIP_TCP_MSS || HTTPD_INBUF_SIZE < UIP_RECEIVE_WINDOW
#error HTTPD_INBUF_SIZE is too small. Must be at least a TCP window in size.
#endif
#ifndef WEBSERVER_CONF_OUTBUF_SIZE
#define HTTPD_OUTBUF_SIZE (UIP_TCP_MSS + 20)
#else /* WEBSERVER_CONF_OUTBUF_SIZE */
#define HTTPD_OUTBUF_SIZE WEBSERVER_CONF_OUTBUF_SIZE
#endif /* WEBSERVER_CONF_OUTBUF_SIZE */
struct httpd_ws_state;
typedef char (* httpd_ws_script_t)(struct httpd_ws_state *s);
typedef int (* httpd_ws_output_headers_t)(struct httpd_ws_state *s,
char *buffer, int buf_size,
int index);
#define HTTPD_WS_GET 1
#define HTTPD_WS_POST 2
#define HTTPD_WS_PUT 3
#define HTTPD_WS_RESPONSE 4
#define HTTPD_WS_STATE_UNUSED 0
#define HTTPD_WS_STATE_INPUT 1
#define HTTPD_WS_STATE_OUTPUT 2
#define HTTPD_WS_STATE_REQUEST_OUTPUT 3
#define HTTPD_WS_STATE_REQUEST_INPUT 4
struct httpd_ws_state {
struct timer timer;
struct psock sin, sout;
struct pt outputpt;
char inputbuf[HTTPD_INBUF_SIZE];
char filename[HTTPD_PATHLEN];
const char *content_type;
uint16_t content_len;
char outbuf[HTTPD_OUTBUF_SIZE];
uint16_t outbuf_pos;
char state;
char request_type;
int response_index;
httpd_ws_output_headers_t output_extra_headers;
httpd_ws_script_t script;
#ifdef HTTPD_WS_CONF_USER_STATE
HTTPD_WS_CONF_USER_STATE;
#endif
};
void httpd_ws_init(void);
void httpd_ws_appcall(void *state);
struct httpd_ws_state *httpd_ws_request(char request_type,
const char *host_ip,
const char *host_hdr,
uint16_t port,
const char *file,
const char *content_type,
uint16_t content_len,
httpd_ws_script_t generator);
#define SEND_STRING(s, str, len) PSOCK_SEND((s), (uint8_t *)(str), (len))
httpd_ws_script_t httpd_ws_get_script(struct httpd_ws_state *s);
PROCESS_NAME(httpd_ws_process);
#endif /* __HTTPD_WS_H__ */