mirror of
https://github.com/servalproject/serval-dna.git
synced 2024-12-23 15:02:27 +00:00
82 lines
3.0 KiB
C
82 lines
3.0 KiB
C
/*
|
|
Serval Daemon
|
|
Copyright (C) 2012 Serval Project Inc.
|
|
|
|
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; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef _SERVALD_OVERLAY_BUFFER_H
|
|
#define _SERVALD_OVERLAY_BUFFER_H
|
|
|
|
struct overlay_buffer {
|
|
unsigned char *bytes;
|
|
|
|
// remembered position for rewinding
|
|
int checkpointLength;
|
|
|
|
// position of data read / written
|
|
int position;
|
|
|
|
// maximum allowed bytes for reading / writing
|
|
int sizeLimit;
|
|
|
|
// size of buffer
|
|
int allocSize;
|
|
|
|
// is this an allocated buffer? can it be resized? Should it be freed?
|
|
unsigned char * allocated;
|
|
|
|
// length position for later patching
|
|
int var_length_offset;
|
|
};
|
|
|
|
struct overlay_buffer *ob_new(void);
|
|
struct overlay_buffer *ob_static(unsigned char *bytes, int size);
|
|
struct overlay_buffer *ob_slice(struct overlay_buffer *b, int offset, int length);
|
|
struct overlay_buffer *ob_dup(struct overlay_buffer *b);
|
|
int ob_free(struct overlay_buffer *b);
|
|
int ob_checkpoint(struct overlay_buffer *b);
|
|
int ob_rewind(struct overlay_buffer *b);
|
|
int ob_limitsize(struct overlay_buffer *b,int bytes);
|
|
int ob_unlimitsize(struct overlay_buffer *b);
|
|
int ob_makespace(struct overlay_buffer *b,int bytes);
|
|
int ob_append_byte(struct overlay_buffer *b,unsigned char byte);
|
|
int ob_append_bytes(struct overlay_buffer *b,unsigned char *bytes,int count);
|
|
unsigned char *ob_append_space(struct overlay_buffer *b,int count);
|
|
int ob_append_ui16(struct overlay_buffer *b, uint16_t v);
|
|
int ob_append_ui32(struct overlay_buffer *b, uint32_t v);
|
|
int ob_append_packed_ui32(struct overlay_buffer *b, uint32_t v);
|
|
int ob_patch_rfs(struct overlay_buffer *b);
|
|
int ob_append_rfs(struct overlay_buffer *b,int l);
|
|
// get one byte, -ve number indicates failure
|
|
int ob_getbyte(struct overlay_buffer *b,int ofs);
|
|
// get one byte from the current position, -ve number indicates failure
|
|
int ob_get(struct overlay_buffer *b);
|
|
int ob_get_bytes(struct overlay_buffer *b, unsigned char *buff, int len);
|
|
unsigned char * ob_get_bytes_ptr(struct overlay_buffer *b, int len);
|
|
uint32_t ob_get_ui32(struct overlay_buffer *b);
|
|
uint16_t ob_get_ui16(struct overlay_buffer *b);
|
|
int ob_dump(struct overlay_buffer *b,char *desc);
|
|
int ob_set_ui16(struct overlay_buffer *b, int offset, uint16_t v);
|
|
|
|
uint32_t ob_get_packed_ui32(struct overlay_buffer *b);
|
|
|
|
// information routines
|
|
int ob_position(struct overlay_buffer *b);
|
|
int ob_limit(struct overlay_buffer *b);
|
|
int ob_remaining(struct overlay_buffer *b);
|
|
unsigned char* ob_ptr(struct overlay_buffer *b);
|
|
#endif
|