Makefile- acl.c
- acl.h
- acldata.c
- acldata.h
- auth.c
- auth.h
- config.c
- config.h
- configmanager.c
- configmanager.h
- error.c
- error.h
- event.c
- event.h
- event_bsd.c
- event_bsd.h
- event_linux.c
- event_linux.h
- event_solaris.c
- event_solaris.h
- func.c
- func.h
- http.c
- http.h
- httplistener.c
- httplistener.h
- httpparser.c
- httpparser.h
- httprequest.c
- httprequest.h
- keyfile_auth.c
- keyfile_auth.h
- ldap_auth.c
- ldap_auth.h
- log.c
- log.h
- main.c
- netsite.h
- objs.mk
- protocol.c
- protocol.h
- request.c
- request.h
- session.c
- session.h
- sessionhandler.c
- sessionhandler.h
- srvctrl.c
- srvctrl.h
- threadpools.c
- threadpools.h
- vfs.c
- vfs.h
- vserver.c
- vserver.h
- webserver.c
- webserver.h
- websocket.c
- websocket.h
- ws-fn.c
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2016 Olaf Wintermann. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
*/
#ifndef WEBSOCKET_H
#define WEBSOCKET_H
#include "../public/nsapi.h"
#ifdef __cplusplus
extern "C" {
#endif
#define WS_FRAMEHEADER_BUFLEN 16
typedef struct WSParser WSParser;
typedef struct WSFrame WSFrame;
// WSMessage is defined in nsapi.h
struct WSFrame {
uint8_t header_complete;
uint8_t fin;
uint8_t mask;
uint8_t opcode;
uint32_t masking_key;
uint64_t payload_length;
};
struct WSParser {
// input buffer size
const char *inbuf;
// inbuf data length
size_t length;
// current buffer position
size_t pos;
// current message or NULL
WSMessage *current;
// parser state: 0: parse frame, 1: get payload data
int state;
// current payload length
size_t cur_plen;
// current message frame
WSFrame frame;
// tmp buffer for incomplete frame header
char tmpbuf[WS_FRAMEHEADER_BUFLEN];
// length of tmpbuf
size_t tmplen;
pool_handle_t *pool;
};
/*
* creates a new websocket parser
*/
WSParser* websocket_parser(Session *sn);
/*
* puts input data into the websocket parser
* you can use websocket_get_message() after that
*/
void websocket_input(WSParser *parser, const char *data, size_t length);
/*
* tries to read a complete websocket message
* returns a pointer to an allocated WSMessage or NULL
* sets error to 1 if an error occurs, otherwise to 0
*/
WSMessage* websocket_get_message(WSParser *parser, int *error);
/*
* reads a websocket frame util begin of the payload data
* returns position of payload data or 0 if the frame header is incomplete
*/
ssize_t websocket_get_frameheader(WSFrame *frame, const char *buf, size_t len);
/*
* masks or unmasks data
* this is done by a simple xor with each element in buf and mask
*/
void websocket_mask_data(char *buf, size_t len, uint32_t mask);
#ifdef __cplusplus
}
#endif
#endif /* WEBSOCKET_H */