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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/* ASN.1 BER/DER/CER parsing state machine internal definitions3 *4 * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.5 * Written by David Howells (dhowells@redhat.com)6 */7 8#ifndef _LINUX_ASN1_BER_BYTECODE_H9#define _LINUX_ASN1_BER_BYTECODE_H10 11#ifdef __KERNEL__12#include <linux/types.h>13#endif14#include <linux/asn1.h>15 16typedef int (*asn1_action_t)(void *context,17 size_t hdrlen, /* In case of ANY type */18 unsigned char tag, /* In case of ANY type */19 const void *value, size_t vlen);20 21struct asn1_decoder {22 const unsigned char *machine;23 size_t machlen;24 const asn1_action_t *actions;25};26 27enum asn1_opcode {28 /* The tag-matching ops come first and the odd-numbered slots29 * are for OR_SKIP ops.30 */31#define ASN1_OP_MATCH__SKIP 0x0132#define ASN1_OP_MATCH__ACT 0x0233#define ASN1_OP_MATCH__JUMP 0x0434#define ASN1_OP_MATCH__ANY 0x0835#define ASN1_OP_MATCH__COND 0x1036 37 ASN1_OP_MATCH = 0x00,38 ASN1_OP_MATCH_OR_SKIP = 0x01,39 ASN1_OP_MATCH_ACT = 0x02,40 ASN1_OP_MATCH_ACT_OR_SKIP = 0x03,41 ASN1_OP_MATCH_JUMP = 0x04,42 ASN1_OP_MATCH_JUMP_OR_SKIP = 0x05,43 ASN1_OP_MATCH_ANY = 0x08,44 ASN1_OP_MATCH_ANY_OR_SKIP = 0x09,45 ASN1_OP_MATCH_ANY_ACT = 0x0a,46 ASN1_OP_MATCH_ANY_ACT_OR_SKIP = 0x0b,47 /* Everything before here matches unconditionally */48 49 ASN1_OP_COND_MATCH_OR_SKIP = 0x11,50 ASN1_OP_COND_MATCH_ACT_OR_SKIP = 0x13,51 ASN1_OP_COND_MATCH_JUMP_OR_SKIP = 0x15,52 ASN1_OP_COND_MATCH_ANY = 0x18,53 ASN1_OP_COND_MATCH_ANY_OR_SKIP = 0x19,54 ASN1_OP_COND_MATCH_ANY_ACT = 0x1a,55 ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP = 0x1b,56 57 /* Everything before here will want a tag from the data */58#define ASN1_OP__MATCHES_TAG ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP59 60 /* These are here to help fill up space */61 ASN1_OP_COND_FAIL = 0x1c,62 ASN1_OP_COMPLETE = 0x1d,63 ASN1_OP_ACT = 0x1e,64 ASN1_OP_MAYBE_ACT = 0x1f,65 66 /* The following eight have bit 0 -> SET, 1 -> OF, 2 -> ACT */67 ASN1_OP_END_SEQ = 0x20,68 ASN1_OP_END_SET = 0x21,69 ASN1_OP_END_SEQ_OF = 0x22,70 ASN1_OP_END_SET_OF = 0x23,71 ASN1_OP_END_SEQ_ACT = 0x24,72 ASN1_OP_END_SET_ACT = 0x25,73 ASN1_OP_END_SEQ_OF_ACT = 0x26,74 ASN1_OP_END_SET_OF_ACT = 0x27,75#define ASN1_OP_END__SET 0x0176#define ASN1_OP_END__OF 0x0277#define ASN1_OP_END__ACT 0x0478 79 ASN1_OP_RETURN = 0x28,80 81 ASN1_OP__NR82};83 84#define _tag(CLASS, CP, TAG) ((ASN1_##CLASS << 6) | (ASN1_##CP << 5) | ASN1_##TAG)85#define _tagn(CLASS, CP, TAG) ((ASN1_##CLASS << 6) | (ASN1_##CP << 5) | TAG)86#define _jump_target(N) (N)87#define _action(N) (N)88 89#endif /* _LINUX_ASN1_BER_BYTECODE_H */90