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86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/*
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* Copyright (C) 2012-2024 Red Hat, Inc. All Rights Reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Written by David Howells (dhowells@redhat.com)
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*/
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#ifndef __ASN1_BER_BYTECODE_H
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#define __ASN1_BER_BYTECODE_H
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#include <aic_common.h>
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#include <asn1.h>
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typedef int (*asn1_action_t)(void *context, const void *value, size_t vlen);
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struct asn1_decoder {
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const unsigned char *machine;
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size_t machlen;
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const asn1_action_t *actions;
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};
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enum asn1_opcode {
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/* The tag-matching ops come first and the odd-numbered slots
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* are for OR_SKIP ops.
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*/
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#define ASN1_OP_MATCH__SKIP 0x01
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#define ASN1_OP_MATCH__ACT 0x02
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#define ASN1_OP_MATCH__JUMP 0x04
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#define ASN1_OP_MATCH__ANY 0x08
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#define ASN1_OP_MATCH__COND 0x10
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ASN1_OP_MATCH = 0x00,
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ASN1_OP_MATCH_OR_SKIP = 0x01,
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ASN1_OP_MATCH_ACT = 0x02,
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ASN1_OP_MATCH_ACT_OR_SKIP = 0x03,
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ASN1_OP_MATCH_JUMP = 0x04,
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ASN1_OP_MATCH_JUMP_OR_SKIP = 0x05,
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ASN1_OP_MATCH_ANY = 0x08,
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ASN1_OP_MATCH_ANY_OR_SKIP = 0x09,
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ASN1_OP_MATCH_ANY_ACT = 0x0a,
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ASN1_OP_MATCH_ANY_ACT_OR_SKIP = 0x0b,
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/* Everything before here matches unconditionally */
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ASN1_OP_COND_MATCH_OR_SKIP = 0x11,
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ASN1_OP_COND_MATCH_ACT_OR_SKIP = 0x13,
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ASN1_OP_COND_MATCH_JUMP_OR_SKIP = 0x15,
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ASN1_OP_COND_MATCH_ANY = 0x18,
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ASN1_OP_COND_MATCH_ANY_OR_SKIP = 0x19,
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ASN1_OP_COND_MATCH_ANY_ACT = 0x1a,
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ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP = 0x1b,
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/* Everything before here will want a tag from the data */
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#define ASN1_OP__MATCHES_TAG ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP
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/* These are here to help fill up space */
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ASN1_OP_COND_FAIL = 0x1c,
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ASN1_OP_COMPLETE = 0x1d,
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ASN1_OP_ACT = 0x1e,
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ASN1_OP_MAYBE_ACT = 0x1f,
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/* The following eight have bit 0 -> SET, 1 -> OF, 2 -> ACT */
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ASN1_OP_END_SEQ = 0x20,
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ASN1_OP_END_SET = 0x21,
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ASN1_OP_END_SEQ_OF = 0x22,
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ASN1_OP_END_SET_OF = 0x23,
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ASN1_OP_END_SEQ_ACT = 0x24,
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ASN1_OP_END_SET_ACT = 0x25,
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ASN1_OP_END_SEQ_OF_ACT = 0x26,
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ASN1_OP_END_SET_OF_ACT = 0x27,
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#define ASN1_OP_END__SET 0x01
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#define ASN1_OP_END__OF 0x02
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#define ASN1_OP_END__ACT 0x04
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ASN1_OP_RETURN = 0x28,
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ASN1_OP__NR
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};
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#define _tag(CLASS, CP, TAG) ((ASN1_##CLASS << 6) | (ASN1_##CP << 5) | ASN1_##TAG)
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#define _tagn(CLASS, CP, TAG) ((ASN1_##CLASS << 6) | (ASN1_##CP << 5) | TAG)
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#define _jump_target(N) (N)
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#define _action(N) (N)
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#endif /* __ASN1_BER_BYTECODE_H */
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