#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)

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)

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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Macros

Functions

Macro Definition Documentation

◆ ER_CLASS_APPL

◆ ER_CLASS_CTXT

◆ ER_CLASS_MASK

◆ ER_CLASS_PRIV

◆ ER_CLASS_UNIV

◆ ER_CONSTRUCT

◆ ER_PC

◆ ER_PC_MASK

◆ ER_PRIMITIVE

◆ ER_TAG_BIT_STRING

◆ ER_TAG_BOOLEAN

◆ ER_TAG_ENUMERATED

◆ ER_TAG_GENERAL_STRING

◆ ER_TAG_GENERALIZED_TIME

◆ ER_TAG_INTEGER

◆ ER_TAG_MASK

◆ ER_TAG_OBJECT_IDENTIFIER

◆ ER_TAG_OCTET_STRING

◆ ER_TAG_SEQUENCE

◆ ER_TAG_SEQUENCE_OF

Function Documentation

◆ _er_skip_length()

◆ er_get_content_length()

◆ er_read_application_tag()

◆ er_read_bit_string()

◆ er_read_BOOL()

◆ er_read_contextual_tag()

◆ er_read_enumerated()

◆ er_read_integer()

◆ er_read_integer_length()

◆ er_read_length()

◆ er_read_octet_string()

◆ er_read_sequence_tag()

◆ er_read_universal_tag()

◆ er_skip_contextual_tag()

◆ er_skip_integer()

◆ er_skip_octet_string()

◆ er_skip_sequence()

◆ er_skip_sequence_tag()

◆ er_write_application_tag()

◆ er_write_bit_string_tag()

◆ er_write_BOOL()

◆ er_write_contextual_tag()

◆ er_write_enumerated()

◆ er_write_integer()

◆ er_write_length()

◆ er_write_octet_string()

◆ er_write_octet_string_tag()

◆ er_write_sequence_tag()

◆ er_write_universal_tag()