decode.c File Reference

#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <assert.h>
#include <limits.h>
#include "common.h"
#include "bits.h"
#include "dwg.h"
#include "hash.h"
#include "decode.h"
#include "print.h"
#include "free.h"
#include "dynapi.h"
#include "logging.h"
#include "dec_macros.h"
#include "template.spec"
#include "header.spec"
#include "auxheader.spec"
#include "summaryinfo.spec"
#include "2ndheader.spec"
#include "objfreespace.spec"
#include "appinfo.spec"
#include "filedeplist.spec"
#include "security.spec"
#include "revhistory.spec"
#include "acds.spec"
#include "r2004_file_header.spec"
#include "common_entity_data.spec"
#include "common_object_handle_data.spec"
#include "header_variables.spec"
#include "common_entity_handle_data.spec"
#include "dwg.spec"
#include "classes.inc"

Data Structures
union	_encrypted_section_header

Macros
#define	_DEFAULT_SOURCE   1
#define	_BSD_SOURCE   1
#define	_GNU_SOURCE   1 /* for memmem on linux */
#define	_USE_BSD   1
#define	IS_DECODER
#define	DWG_LOGLEVEL   loglevel
#define	MAX_HEADER_SIZE   2048
#define	LOG_POS   LOG_RPOS
#define	CMP(f, type)
#define	DECODE_PRER13_SENTINEL(ID)    error |= decode_preR13_sentinel (ID, #ID, dat, dwg)

Typedefs
typedef union _encrypted_section_header	encrypted_section_header

Functions
int	dwg_decode (Bit_Chain *restrict dat, Dwg_Data *restrict dwg)
Dwg_Object_Ref *	dwg_find_objectref (const Dwg_Data *restrict dwg, const Dwg_Object *restrict obj)
void	dwg_resolve_objectrefs_silent (Dwg_Data *restrict dwg)
void	bfr_read (void *restrict dst, BITCODE_RC *restrict *restrict src, size_t size)
void	bfr_read_32 (void *restrict dst, BITCODE_RC *restrict *restrict src, size_t size)
void	bfr_read_64 (void *restrict dst, BITCODE_RC *restrict *restrict src, size_t size)
uint32_t	dwg_section_page_checksum (const uint32_t seed, Bit_Chain *restrict dat, int32_t size)
unsigned int	section_max_decomp_size (const Dwg_Data *dwg, const Dwg_Section_Type id)
void	decrypt_R2004_header (BITCODE_RC *restrict dest, const BITCODE_RC *restrict src, size_t size)
int	dwg_decode_eed (Bit_Chain *restrict dat, Dwg_Object_Object *restrict obj)
int	obj_handle_stream (Bit_Chain *restrict dat, Dwg_Object *restrict obj, Bit_Chain *restrict hdl_dat)
Dwg_Object_Ref *	dwg_new_ref (Dwg_Data *restrict dwg)
Dwg_Object_Ref *	dwg_decode_handleref (Bit_Chain *restrict dat, Dwg_Object *restrict obj, Dwg_Data *restrict dwg)
Dwg_Object_Ref *	dwg_decode_handleref_with_code (Bit_Chain *restrict dat, Dwg_Object *restrict obj, Dwg_Data *restrict dwg, unsigned int code)
int	dwg_decode_header_variables (Bit_Chain *dat, Bit_Chain *hdl_dat, Bit_Chain *str_dat, Dwg_Data *restrict dwg)
void	dwg_free_xdata_resbuf (Dwg_Resbuf *rbuf)
int	dwg_add_object (Dwg_Data *restrict dwg)
int	dwg_decode_add_object (Dwg_Data *restrict dwg, Bit_Chain *dat, Bit_Chain *hdl_dat, size_t address)
int	dwg_decode_unknown_bits (Bit_Chain *restrict dat, Dwg_Object *restrict obj)
int	dwg_decode_unknown_rest (Bit_Chain *restrict dat, Dwg_Object *restrict obj)
char *	dwg_dim_blockname (Dwg_Data *restrict dwg, const Dwg_Object *restrict obj)
int	dwg_validate_INSERT (Dwg_Object *restrict obj)
int	dwg_validate_POLYLINE (Dwg_Object *restrict obj)
int	dwg_fixup_BLOCKS_entities (Dwg_Data *restrict dwg)
void	dxf_3dsolid_revisionguid (Dwg_Entity__3DSOLID *_obj)
int	decode_preR13_DIMENSION (Bit_Chain *restrict dat, Dwg_Object *restrict obj)
int	decode_preR13_sentinel (const Dwg_Sentinel sentinel, const char *restrict sentinel_name, Bit_Chain *restrict dat, Dwg_Data *restrict dwg)
int	decode_r11_auxheader (Bit_Chain *restrict dat, Dwg_Data *restrict dwg)
int	decode_preR13_entities (BITCODE_RL start, BITCODE_RL end, unsigned num_entities, BITCODE_RL size, Bit_Chain *restrict dat, Dwg_Data *restrict dwg, const EntitySectionIndexR11 entity_section)

Macro Definition Documentation

_BSD_SOURCE

#define _BSD_SOURCE   1

_DEFAULT_SOURCE

#define _DEFAULT_SOURCE   1

_GNU_SOURCE

#define _GNU_SOURCE   1 /* for memmem on linux */

_USE_BSD

#define _USE_BSD   1

CMP

#define CMP	(		f,
			type
	)

Value:

  if (tbl->f != f)                                                            \
  LOG_ERROR ("decode_preR13_section_chk %s %s", tbl->name, #f)

DECODE_PRER13_SENTINEL

#define DECODE_PRER13_SENTINEL

(

ID

)

error |= decode_preR13_sentinel (ID, #ID, dat, dwg)

DWG_LOGLEVEL

#define DWG_LOGLEVEL   loglevel

IS_DECODER

#define IS_DECODER

LOG_POS

#define LOG_POS   LOG_RPOS

MAX_HEADER_SIZE

#define MAX_HEADER_SIZE   2048

Typedef Documentation

encrypted_section_header

typedef union _encrypted_section_header encrypted_section_header

Function Documentation

bfr_read()

void bfr_read	(	void *restrict	dst,
		BITCODE_RC *restrict *restrict	src,
		size_t	size
	)

bfr_read_32()

void bfr_read_32	(	void *restrict	dst,
		BITCODE_RC *restrict *restrict	src,
		size_t	size
	)

bfr_read_64()

void bfr_read_64	(	void *restrict	dst,
		BITCODE_RC *restrict *restrict	src,
		size_t	size
	)

decode_preR13_DIMENSION()

int decode_preR13_DIMENSION	(	Bit_Chain *restrict	dat,
		Dwg_Object *restrict	obj
	)

decode_preR13_entities()

int decode_preR13_entities	(	BITCODE_RL	start,
		BITCODE_RL	end,
		unsigned	num_entities,
		BITCODE_RL	size,
		Bit_Chain *restrict	dat,
		Dwg_Data *restrict	dwg,
		const EntitySectionIndexR11	entity_section
	)

decode_preR13_sentinel()

int decode_preR13_sentinel	(	const Dwg_Sentinel	sentinel,
		const char *restrict	sentinel_name,
		Bit_Chain *restrict	dat,
		Dwg_Data *restrict	dwg
	)

decode_r11_auxheader()

int decode_r11_auxheader	(	Bit_Chain *restrict	dat,
		Dwg_Data *restrict	dwg
	)

decrypt_R2004_header()

void decrypt_R2004_header	(	BITCODE_RC *restrict	dest,
		const BITCODE_RC *restrict	src,
		size_t	size
	)

dwg_add_object()

int dwg_add_object

(

Dwg_Data *restrict

dwg

)

Adds a new empty obj to the dwg->object[] array. The new object is at &dwg->object[dwg->num_objects-1].

Returns 0 or some error codes on success. Returns -1 if the dwg->object pool was re-alloced, i.e. pointers within are invalidated. Returns DWG_ERR_OUTOFMEM otherwise.

dwg_decode()

int dwg_decode	(	Bit_Chain *restrict	dat,
		Dwg_Data *restrict	dwg
	)

dwg_decode returns 0 on success.

everything in dwg is cleared and then either read from dat, or set to a default.

dwg_decode_add_object()

int dwg_decode_add_object	(	Dwg_Data *restrict	dwg,
		Bit_Chain *	dat,
		Bit_Chain *	hdl_dat,
		size_t	address
	)

Adds an object to the DWG (i.e. dwg->object[dwg->num_objects]) Returns 0 or some error codes on success. Returns -1 if the dwg->object pool was re-alloced. Returns some DWG_ERR_* otherwise.

dwg_decode_eed()

int dwg_decode_eed	(	Bit_Chain *restrict	dat,
		Dwg_Object_Object *restrict	obj
	)

dwg_decode_handleref()

Dwg_Object_Ref* dwg_decode_handleref	(	Bit_Chain *restrict	dat,
		Dwg_Object *restrict	obj,
		Dwg_Data *restrict	dwg
	)

dwg_decode_handleref_with_code()

Dwg_Object_Ref* dwg_decode_handleref_with_code	(	Bit_Chain *restrict	dat,
		Dwg_Object *restrict	obj,
		Dwg_Data *restrict	dwg,
		unsigned int	code
	)

code: TYPEDOBJHANDLE: 2 Soft owner 3 Hard owner 4 Soft pointer 5 Hard pointer OFFSETOBJHANDLE for soft owners or pointers: 6 ref + 1 8 ref - 1 a ref + offset c ref - offset e ??

dwg_decode_header_variables()

int dwg_decode_header_variables	(	Bit_Chain *	dat,
		Bit_Chain *	hdl_dat,
		Bit_Chain *	str_dat,
		Dwg_Data *restrict	dwg
	)

dwg_decode_unknown_bits()

int dwg_decode_unknown_bits	(	Bit_Chain *restrict	dat,
		Dwg_Object *restrict	obj
	)

dwg_decode_unknown Container to hold a unknown class entity, see classes.inc Every DEBUGGING class holds a bits array, a bitsize, and the handle and string stream offsets. It starts after the common_entity|object_data until and goes until the end of final padding, to the CRC. (obj->common_size/8 .. obj->size)

dwg_decode_unknown_rest()

int dwg_decode_unknown_rest	(	Bit_Chain *restrict	dat,
		Dwg_Object *restrict	obj
	)

dwg_dim_blockname()

char* dwg_dim_blockname	(	Dwg_Data *restrict	dwg,
		const Dwg_Object *restrict	obj
	)

dwg_find_objectref()

Dwg_Object_Ref* dwg_find_objectref	(	const Dwg_Data *restrict	dwg,
		const Dwg_Object *restrict	obj
	)

dwg_fixup_BLOCKS_entities()

int dwg_fixup_BLOCKS_entities

(

Dwg_Data *restrict

dwg

)

dwg_free_xdata_resbuf()

void dwg_free_xdata_resbuf

(

Dwg_Resbuf *

rbuf

)

dwg_new_ref()

Dwg_Object_Ref* dwg_new_ref

(

Dwg_Data *restrict

dwg

)

Add the empty ref to the DWG (freshly malloc'ed), or NULL.

dwg_resolve_objectrefs_silent()

void dwg_resolve_objectrefs_silent

(

Dwg_Data *restrict

dwg

)

dwg_section_page_checksum()

uint32_t dwg_section_page_checksum	(	const uint32_t	seed,
		Bit_Chain *restrict	dat,
		int32_t	size
	)

dwg_validate_INSERT()

int dwg_validate_INSERT

(

Dwg_Object *restrict

obj

)

dwg_validate_POLYLINE()

int dwg_validate_POLYLINE

(

Dwg_Object *restrict

obj

)

dxf_3dsolid_revisionguid()

void dxf_3dsolid_revisionguid

(

Dwg_Entity__3DSOLID *

_obj

)

obj_handle_stream()

int obj_handle_stream	(	Bit_Chain *restrict	dat,
		Dwg_Object *restrict	obj,
		Bit_Chain *restrict	hdl_dat
	)

section_max_decomp_size()

unsigned int section_max_decomp_size	(	const Dwg_Data *	dwg,
		const Dwg_Section_Type	id
	)