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/*
MySecureShell permit to add restriction to modified sftp-server
when using MySecureShell as shell.
Copyright (C) 2007-2014 MySecureShell Team
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation (version 2)
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _BUFFER_H_
#define _BUFFER_H_
#include "Sftp.h"
typedef struct sBuffer
{
unsigned char *data;
u_int32_t length;
u_int32_t read;
u_int32_t size;
u_int32_t fastClean;
} tBuffer;
#define DEFAULT_GROW 256
#define BufferHandleSize 6 //sizeof(int32) + 1 char + '\0'
/*@null@*/ tBuffer *BufferNew();
void BufferClean(tBuffer *b);
void BufferDelete(tBuffer *b);
void BufferGrow(tBuffer *b, u_int32_t toAdd);
void BufferReadData(tBuffer *b, u_int32_t size);
void BufferPutInt8(tBuffer *b, u_int8_t nb);
void BufferPutInt16(tBuffer *b, u_int16_t nb);
void BufferPutInt32(tBuffer *b, u_int32_t nb);
void BufferPutInt64(tBuffer *b, u_int64_t nb);
void BufferPutHandle(tBuffer *b, int h);
void BufferPutString(tBuffer *b, const char *data);
void BufferPutRawData(tBuffer *b, const void *data, u_int32_t size);
u_int8_t BufferGetInt8(tBuffer *b);
u_int32_t BufferGetInt32(tBuffer *b);
u_int64_t BufferGetInt64(tBuffer *b);
int BufferGetHandle(tBuffer *b);
char *BufferGetString(tBuffer *b);
char *BufferGetData(tBuffer *b, u_int32_t *size);
#define BufferSetFastClean(_D, _STATE) (_D)->fastClean = _STATE
#define BufferEnsureFreeCapacity(_D, _INT32) { if (((_D)->length + _INT32) > (_D)->size) BufferGrow(_D, _INT32); }
#define BufferPutData(_D, _DATA, _SIZE) { BufferPutInt32(_D, _SIZE); BufferPutRawData(_D, _DATA, _SIZE); }
#define BufferPutPacket(_D, _S) BufferPutData((_D), (_S)->data, (_S)->length)
#define BufferPutInt8FAST(_D, _INT8) (_D)->data[(_D)->length++] = _INT8;
#define BufferGetInt8FAST(_D) (u_int8_t )(_D)->data[(_D)->read++]
#define BufferGetReadPointer(_D) &(_D)->data[(_D)->read]
#define BufferIncrCurrentReadPosition(_D, _V) (_D)->read += _V
#define BufferGetWritePointer(_D) &(_D)->data[(_D)->length]
#define BufferGetCurrentWritePosition(_D) (_D)->length
#define BufferSetCurrentWritePosition(_D, _V) (_D)->length = _V
#define BufferIncrCurrentWritePosition(_D, _V) (_D)->length += _V
#endif //_BUFFER_H_
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