er.h File Reference

#include <freerdp/api.h>
#include <freerdp/types.h>
#include <winpr/stream.h>

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Macros
#define	ER_CLASS_MASK   0xC0
#define	ER_CLASS_UNIV   0x00 /* 0 0 */
#define	ER_CLASS_APPL   0x40 /* 0 1 */
#define	ER_CLASS_CTXT   0x80 /* 1 0 */
#define	ER_CLASS_PRIV   0xC0 /* 1 1 */
#define	ER_PC_MASK   0x20
#define	ER_PRIMITIVE   0x00 /* 0 */
#define	ER_CONSTRUCT   0x20 /* 1 */
#define	ER_TAG_MASK   0x1F
#define	ER_TAG_BOOLEAN   0x01
#define	ER_TAG_INTEGER   0x02
#define	ER_TAG_BIT_STRING   0x03
#define	ER_TAG_OCTET_STRING   0x04
#define	ER_TAG_OBJECT_IDENTIFIER   0x06
#define	ER_TAG_ENUMERATED   0x0A
#define	ER_TAG_SEQUENCE   0x10
#define	ER_TAG_SEQUENCE_OF   0x10
#define	ER_TAG_GENERAL_STRING   0x1B
#define	ER_TAG_GENERALIZED_TIME   0x18
#define	ER_PC(_pc)   (_pc ? ER_CONSTRUCT : ER_PRIMITIVE)

Functions
FREERDP_API void	er_read_length (wStream *s, int *length)
FREERDP_API int	er_write_length (wStream *s, int length, BOOL flag)
FREERDP_API int	_er_skip_length (int length)
FREERDP_API int	er_get_content_length (int length)
FREERDP_API BOOL	er_read_universal_tag (wStream *s, BYTE tag, BOOL pc)
FREERDP_API void	er_write_universal_tag (wStream *s, BYTE tag, BOOL pc)
FREERDP_API BOOL	er_read_application_tag (wStream *s, BYTE tag, int *length)
FREERDP_API void	er_write_application_tag (wStream *s, BYTE tag, int length, BOOL flag)
FREERDP_API BOOL	er_read_enumerated (wStream *s, BYTE *enumerated, BYTE count)
FREERDP_API void	er_write_enumerated (wStream *s, BYTE enumerated, BYTE count, BOOL flag)
FREERDP_API BOOL	er_read_contextual_tag (wStream *s, BYTE tag, int *length, BOOL pc)
FREERDP_API int	er_write_contextual_tag (wStream *s, BYTE tag, int length, BOOL pc, BOOL flag)
FREERDP_API int	er_skip_contextual_tag (int length)
FREERDP_API BOOL	er_read_sequence_tag (wStream *s, int *length)
FREERDP_API int	er_write_sequence_tag (wStream *s, int length, BOOL flag)
FREERDP_API int	er_skip_sequence (int length)
FREERDP_API int	er_skip_sequence_tag (int length)
FREERDP_API BOOL	er_read_bit_string (wStream *s, int *length, BYTE *padding)
FREERDP_API BOOL	er_write_bit_string_tag (wStream *s, UINT32 length, BYTE padding, BOOL flag)
FREERDP_API BOOL	er_read_octet_string (wStream *s, int *length)
FREERDP_API void	er_write_octet_string (wStream *s, BYTE *oct_str, int length, BOOL flag)
FREERDP_API int	er_write_octet_string_tag (wStream *s, int length, BOOL flag)
FREERDP_API int	er_skip_octet_string (int length)
FREERDP_API BOOL	er_read_BOOL (wStream *s, BOOL *value)
FREERDP_API void	er_write_BOOL (wStream *s, BOOL value)
FREERDP_API BOOL	er_read_integer (wStream *s, UINT32 *value)
FREERDP_API int	er_write_integer (wStream *s, INT32 value)
FREERDP_API BOOL	er_read_integer_length (wStream *s, int *length)
FREERDP_API int	er_skip_integer (INT32 value)

Macro Definition Documentation

ER_CLASS_APPL

#define ER_CLASS_APPL   0x40 /* 0 1 */

ER_CLASS_CTXT

#define ER_CLASS_CTXT   0x80 /* 1 0 */

ER_CLASS_MASK

#define ER_CLASS_MASK   0xC0

FreeRDP: A Remote Desktop Protocol Implementation ASN.1 Encoding Rules (BER/DER common functions)

Copyright 2011 Marc-Andre Moreau marca.nosp@m.ndre.nosp@m..more.nosp@m.au@g.nosp@m.mail..nosp@m.com Modified by Jiten Pathy

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

ER_CLASS_PRIV

#define ER_CLASS_PRIV   0xC0 /* 1 1 */

ER_CLASS_UNIV

#define ER_CLASS_UNIV   0x00 /* 0 0 */

ER_CONSTRUCT

#define ER_CONSTRUCT   0x20 /* 1 */

ER_PC

#define ER_PC

(

_pc

)

(_pc ? ER_CONSTRUCT : ER_PRIMITIVE)

ER_PC_MASK

#define ER_PC_MASK   0x20

ER_PRIMITIVE

#define ER_PRIMITIVE   0x00 /* 0 */

ER_TAG_BIT_STRING

#define ER_TAG_BIT_STRING   0x03

ER_TAG_BOOLEAN

#define ER_TAG_BOOLEAN   0x01

ER_TAG_ENUMERATED

#define ER_TAG_ENUMERATED   0x0A

ER_TAG_GENERAL_STRING

#define ER_TAG_GENERAL_STRING   0x1B

ER_TAG_GENERALIZED_TIME

#define ER_TAG_GENERALIZED_TIME   0x18

ER_TAG_INTEGER

#define ER_TAG_INTEGER   0x02

ER_TAG_MASK

#define ER_TAG_MASK   0x1F

ER_TAG_OBJECT_IDENTIFIER

#define ER_TAG_OBJECT_IDENTIFIER   0x06

ER_TAG_OCTET_STRING

#define ER_TAG_OCTET_STRING   0x04

ER_TAG_SEQUENCE

#define ER_TAG_SEQUENCE   0x10

ER_TAG_SEQUENCE_OF

#define ER_TAG_SEQUENCE_OF   0x10

Function Documentation

_er_skip_length()

FREERDP_API int _er_skip_length

(

int

length

)

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er_get_content_length()

FREERDP_API int er_get_content_length

(

int

length

)

er_read_application_tag()

FREERDP_API BOOL er_read_application_tag	(	wStream *	s,
		BYTE	tag,
		int *	length
	)

Read er Application tag.

Parameters

s	stream
tag	er application-defined tag
length	length

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er_read_bit_string()

FREERDP_API BOOL er_read_bit_string	(	wStream *	s,
		int *	length,
		BYTE *	padding
	)

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er_read_BOOL()

FREERDP_API BOOL er_read_BOOL	(	wStream *	s,
		BOOL *	value
	)

Read a er BOOLEAN

Parameters

s	A pointer to the stream to read from
value	A pointer to read the data to

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er_read_contextual_tag()

FREERDP_API BOOL er_read_contextual_tag	(	wStream *	s,
		BYTE	tag,
		int *	length,
		BOOL	pc
	)

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er_read_enumerated()

FREERDP_API BOOL er_read_enumerated	(	wStream *	s,
		BYTE *	enumerated,
		BYTE	count
	)

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er_read_integer()

FREERDP_API BOOL er_read_integer	(	wStream *	s,
		UINT32 *	value
	)

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er_read_integer_length()

FREERDP_API BOOL er_read_integer_length	(	wStream *	s,
		int *	length
	)

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er_read_length()

FREERDP_API void er_read_length	(	wStream *	s,
		int *	length
	)

FreeRDP: A Remote Desktop Protocol Implementation ASN.1 Encoding Rules (BER/DER common functions)

Copyright 2011 Marc-Andre Moreau marca.nosp@m.ndre.nosp@m..more.nosp@m.au@g.nosp@m.mail..nosp@m.com Modified by Jiten Pathy

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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er_read_octet_string()

FREERDP_API BOOL er_read_octet_string	(	wStream *	s,
		int *	length
	)

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er_read_sequence_tag()

FREERDP_API BOOL er_read_sequence_tag	(	wStream *	s,
		int *	length
	)

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er_read_universal_tag()

FREERDP_API BOOL er_read_universal_tag	(	wStream *	s,
		BYTE	tag,
		BOOL	pc
	)

Read er Universal tag.

Parameters

s	A pointer to the stream to write to
tag	er universally-defined tag

Returns

TRUE for success

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er_skip_contextual_tag()

FREERDP_API int er_skip_contextual_tag

(

int

length

)

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er_skip_integer()

FREERDP_API int er_skip_integer

(

INT32

value

)

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er_skip_octet_string()

FREERDP_API int er_skip_octet_string

(

int

length

)

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er_skip_sequence()

FREERDP_API int er_skip_sequence

(

int

length

)

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er_skip_sequence_tag()

FREERDP_API int er_skip_sequence_tag

(

int

length

)

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er_write_application_tag()

FREERDP_API void er_write_application_tag	(	wStream *	s,
		BYTE	tag,
		int	length,
		BOOL	flag
	)

Write er Application tag.

Parameters

s	stream
tag	er application-defined tag
length	length

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er_write_bit_string_tag()

FREERDP_API BOOL er_write_bit_string_tag	(	wStream *	s,
		UINT32	length,
		BYTE	padding,
		BOOL	flag
	)

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er_write_BOOL()

FREERDP_API void er_write_BOOL	(	wStream *	s,
		BOOL	value
	)

Write a er BOOLEAN

Parameters

s	A pointer to the stream to write to
value	The value to write

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er_write_contextual_tag()

FREERDP_API int er_write_contextual_tag	(	wStream *	s,
		BYTE	tag,
		int	length,
		BOOL	pc,
		BOOL	flag
	)

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er_write_enumerated()

FREERDP_API void er_write_enumerated	(	wStream *	s,
		BYTE	enumerated,
		BYTE	count,
		BOOL	flag
	)

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er_write_integer()

FREERDP_API int er_write_integer	(	wStream *	s,
		INT32	value
	)

Write a er INTEGER

Parameters

s	A pointer to the stream to write to
value	the value to write

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er_write_length()

FREERDP_API int er_write_length	(	wStream *	s,
		int	length,
		BOOL	flag
	)

Write er length.

Parameters

s	stream
length	length

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er_write_octet_string()

FREERDP_API void er_write_octet_string	(	wStream *	s,
		BYTE *	oct_str,
		int	length,
		BOOL	flag
	)

Write a er OCTET_STRING

Parameters

s	stream
oct_str	octet string
length	string length

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er_write_octet_string_tag()

FREERDP_API int er_write_octet_string_tag	(	wStream *	s,
		int	length,
		BOOL	flag
	)

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er_write_sequence_tag()

FREERDP_API int er_write_sequence_tag	(	wStream *	s,
		int	length,
		BOOL	flag
	)

Write er SEQUENCE tag.

Parameters

s	stream
length	length

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er_write_universal_tag()

FREERDP_API void er_write_universal_tag	(	wStream *	s,
		BYTE	tag,
		BOOL	pc
	)

Write er Universal tag.

Parameters

s	stream
tag	er universally-defined tag
pc	primitive (FALSE) or constructed (TRUE)

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