58 lines
1.4 KiB
C
58 lines
1.4 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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#include "ber.h"
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void
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ber_write_length(STREAM* s, int length)
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{
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if (length > 0x7F)
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{
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stream_write_uint8(s, 0x82);
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stream_write_uint16_be(s, length);
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}
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else
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{
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stream_write_uint8(s, length);
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}
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}
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void
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ber_write_universal_tag(STREAM* s, uint8 tag, int length)
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{
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stream_write_uint8(s, (BER_CLASS_UNIV | BER_PRIMITIVE) | (BER_TAG_MASK & tag));
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ber_write_length(s, length);
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}
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void
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ber_write_application_tag(STREAM* s, uint8 tag, int length)
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{
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if (tag > 30)
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{
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stream_write_uint8(s, (BER_CLASS_APPL | BER_CONSTRUCT) | BER_TAG_MASK);
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stream_write_uint8(s, tag);
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ber_write_length(s, length);
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}
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else
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{
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stream_write_uint8(s, (BER_CLASS_APPL | BER_CONSTRUCT) | (BER_TAG_MASK & tag));
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ber_write_length(s, length);
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}
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}
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