1b4d0d230SThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 24520c6a4SDavid Howells /* ASN.1 BER/DER/CER parsing state machine internal definitions 34520c6a4SDavid Howells * 44520c6a4SDavid Howells * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. 54520c6a4SDavid Howells * Written by David Howells (dhowells@redhat.com) 64520c6a4SDavid Howells */ 74520c6a4SDavid Howells 84520c6a4SDavid Howells #ifndef _LINUX_ASN1_BER_BYTECODE_H 94520c6a4SDavid Howells #define _LINUX_ASN1_BER_BYTECODE_H 104520c6a4SDavid Howells 114520c6a4SDavid Howells #ifdef __KERNEL__ 124520c6a4SDavid Howells #include <linux/types.h> 134520c6a4SDavid Howells #endif 144520c6a4SDavid Howells #include <linux/asn1.h> 154520c6a4SDavid Howells 164520c6a4SDavid Howells typedef int (*asn1_action_t)(void *context, 174520c6a4SDavid Howells size_t hdrlen, /* In case of ANY type */ 184520c6a4SDavid Howells unsigned char tag, /* In case of ANY type */ 194520c6a4SDavid Howells const void *value, size_t vlen); 204520c6a4SDavid Howells 214520c6a4SDavid Howells struct asn1_decoder { 224520c6a4SDavid Howells const unsigned char *machine; 234520c6a4SDavid Howells size_t machlen; 244520c6a4SDavid Howells const asn1_action_t *actions; 254520c6a4SDavid Howells }; 264520c6a4SDavid Howells 274520c6a4SDavid Howells enum asn1_opcode { 284520c6a4SDavid Howells /* The tag-matching ops come first and the odd-numbered slots 294520c6a4SDavid Howells * are for OR_SKIP ops. 304520c6a4SDavid Howells */ 314520c6a4SDavid Howells #define ASN1_OP_MATCH__SKIP 0x01 324520c6a4SDavid Howells #define ASN1_OP_MATCH__ACT 0x02 334520c6a4SDavid Howells #define ASN1_OP_MATCH__JUMP 0x04 344520c6a4SDavid Howells #define ASN1_OP_MATCH__ANY 0x08 354520c6a4SDavid Howells #define ASN1_OP_MATCH__COND 0x10 364520c6a4SDavid Howells 374520c6a4SDavid Howells ASN1_OP_MATCH = 0x00, 384520c6a4SDavid Howells ASN1_OP_MATCH_OR_SKIP = 0x01, 394520c6a4SDavid Howells ASN1_OP_MATCH_ACT = 0x02, 404520c6a4SDavid Howells ASN1_OP_MATCH_ACT_OR_SKIP = 0x03, 414520c6a4SDavid Howells ASN1_OP_MATCH_JUMP = 0x04, 424520c6a4SDavid Howells ASN1_OP_MATCH_JUMP_OR_SKIP = 0x05, 434520c6a4SDavid Howells ASN1_OP_MATCH_ANY = 0x08, 44233ce79dSDavid Howells ASN1_OP_MATCH_ANY_OR_SKIP = 0x09, 454520c6a4SDavid Howells ASN1_OP_MATCH_ANY_ACT = 0x0a, 46233ce79dSDavid Howells ASN1_OP_MATCH_ANY_ACT_OR_SKIP = 0x0b, 474520c6a4SDavid Howells /* Everything before here matches unconditionally */ 484520c6a4SDavid Howells 494520c6a4SDavid Howells ASN1_OP_COND_MATCH_OR_SKIP = 0x11, 504520c6a4SDavid Howells ASN1_OP_COND_MATCH_ACT_OR_SKIP = 0x13, 514520c6a4SDavid Howells ASN1_OP_COND_MATCH_JUMP_OR_SKIP = 0x15, 524520c6a4SDavid Howells ASN1_OP_COND_MATCH_ANY = 0x18, 53233ce79dSDavid Howells ASN1_OP_COND_MATCH_ANY_OR_SKIP = 0x19, 544520c6a4SDavid Howells ASN1_OP_COND_MATCH_ANY_ACT = 0x1a, 55233ce79dSDavid Howells ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP = 0x1b, 564520c6a4SDavid Howells 574520c6a4SDavid Howells /* Everything before here will want a tag from the data */ 58233ce79dSDavid Howells #define ASN1_OP__MATCHES_TAG ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP 594520c6a4SDavid Howells 604520c6a4SDavid Howells /* These are here to help fill up space */ 61233ce79dSDavid Howells ASN1_OP_COND_FAIL = 0x1c, 62233ce79dSDavid Howells ASN1_OP_COMPLETE = 0x1d, 63233ce79dSDavid Howells ASN1_OP_ACT = 0x1e, 64233ce79dSDavid Howells ASN1_OP_MAYBE_ACT = 0x1f, 654520c6a4SDavid Howells 664520c6a4SDavid Howells /* The following eight have bit 0 -> SET, 1 -> OF, 2 -> ACT */ 674520c6a4SDavid Howells ASN1_OP_END_SEQ = 0x20, 684520c6a4SDavid Howells ASN1_OP_END_SET = 0x21, 694520c6a4SDavid Howells ASN1_OP_END_SEQ_OF = 0x22, 704520c6a4SDavid Howells ASN1_OP_END_SET_OF = 0x23, 714520c6a4SDavid Howells ASN1_OP_END_SEQ_ACT = 0x24, 724520c6a4SDavid Howells ASN1_OP_END_SET_ACT = 0x25, 734520c6a4SDavid Howells ASN1_OP_END_SEQ_OF_ACT = 0x26, 744520c6a4SDavid Howells ASN1_OP_END_SET_OF_ACT = 0x27, 754520c6a4SDavid Howells #define ASN1_OP_END__SET 0x01 764520c6a4SDavid Howells #define ASN1_OP_END__OF 0x02 774520c6a4SDavid Howells #define ASN1_OP_END__ACT 0x04 784520c6a4SDavid Howells 79233ce79dSDavid Howells ASN1_OP_RETURN = 0x28, 80233ce79dSDavid Howells 814520c6a4SDavid Howells ASN1_OP__NR 824520c6a4SDavid Howells }; 834520c6a4SDavid Howells 844520c6a4SDavid Howells #define _tag(CLASS, CP, TAG) ((ASN1_##CLASS << 6) | (ASN1_##CP << 5) | ASN1_##TAG) 854520c6a4SDavid Howells #define _tagn(CLASS, CP, TAG) ((ASN1_##CLASS << 6) | (ASN1_##CP << 5) | TAG) 864520c6a4SDavid Howells #define _jump_target(N) (N) 874520c6a4SDavid Howells #define _action(N) (N) 884520c6a4SDavid Howells 894520c6a4SDavid Howells #endif /* _LINUX_ASN1_BER_BYTECODE_H */ 90