84 lines
3.1 KiB
C
84 lines
3.1 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Client
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* ASN.1 Basic Encoding Rules (BER)
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*
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* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __BER_H
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#define __BER_H
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#include <freerdp/types.h>
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#include <freerdp/utils/stream.h>
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/* BER type */
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/* Class - bits 8 and 7 */
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#define BER_CLASS_MASK 0xC0
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#define BER_CLASS_UNIV 0x00 /* 0 0 */
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#define BER_CLASS_APPL 0x40 /* 0 1 */
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#define BER_CLASS_CTXT 0x80 /* 1 0 */
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#define BER_CLASS_PRIV 0xC0 /* 1 1 */
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/* P/C - bit 6 */
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#define BER_PC_MASK 0x20
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#define BER_PRIMITIVE 0x00 /* 0 */
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#define BER_CONSTRUCT 0x20 /* 1 */
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/* Tag - bits 5 to 1 */
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#define BER_TAG_MASK 0x1F
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#define BER_TAG_BOOLEAN 0x01
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#define BER_TAG_INTEGER 0x02
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#define BER_TAG_BIT_STRING 0x03
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#define BER_TAG_OCTET_STRING 0x04
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#define BER_TAG_OBJECT_IDENFIER 0x06
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#define BER_TAG_ENUMERATED 0x0A
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#define BER_TAG_SEQUENCE 0x10
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#define BER_TAG_SEQUENCE_OF 0x10
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#define BER_PC(_pc) (_pc ? BER_CONSTRUCT : BER_PRIMITIVE)
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void ber_read_length(STREAM* s, int* length);
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int ber_write_length(STREAM* s, int length);
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int _ber_skip_length(int length);
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int ber_get_content_length(int length);
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boolean ber_read_universal_tag(STREAM* s, uint8 tag, boolean pc);
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void ber_write_universal_tag(STREAM* s, uint8 tag, boolean pc);
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boolean ber_read_application_tag(STREAM* s, uint8 tag, int* length);
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void ber_write_application_tag(STREAM* s, uint8 tag, int length);
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boolean ber_read_application_tag(STREAM* s, uint8 tag, int* length);
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boolean ber_read_enumerated(STREAM* s, uint8* enumerated, uint8 count);
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void ber_write_enumerated(STREAM* s, uint8 enumerated, uint8 count);
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boolean ber_read_contextual_tag(STREAM* s, uint8 tag, int* length, boolean pc);
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int ber_write_contextual_tag(STREAM* s, uint8 tag, int length, boolean pc);
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int ber_skip_contextual_tag(int length);
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boolean ber_read_sequence_tag(STREAM* s, int* length);
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int ber_write_sequence_tag(STREAM* s, int length);
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int ber_skip_sequence(int length);
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int ber_skip_sequence_tag(int length);
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boolean ber_read_bit_string(STREAM* s, int* length, uint8* padding);
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boolean ber_read_octet_string(STREAM* s, int* length);
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void ber_write_octet_string(STREAM* s, uint8* oct_str, int length);
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int ber_write_octet_string_tag(STREAM* s, int length);
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int ber_skip_octet_string(int length);
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boolean ber_read_boolean(STREAM* s, boolean* value);
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void ber_write_boolean(STREAM* s, boolean value);
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boolean ber_read_integer(STREAM* s, uint32* value);
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int ber_write_integer(STREAM* s, uint32 value);
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boolean ber_read_integer_length(STREAM* s, int* length);
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int ber_skip_integer(uint32 value);
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#endif /* __BER_H */
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