projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 4520c6a4 DH |
1 | /* ASN.1 BER/DER/CER parsing state machine internal definitions |
| 2 | * | |
| 3 | * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. | |
| 4 | * Written by David Howells (dhowells@redhat.com) | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public Licence | |
| 8 | * as published by the Free Software Foundation; either version | |
| 9 | * 2 of the Licence, or (at your option) any later version. | |
| 10 | */ | |
| 11 | ||
| 12 | #ifndef _LINUX_ASN1_BER_BYTECODE_H | |
| 13 | #define _LINUX_ASN1_BER_BYTECODE_H | |
| 14 | ||
| 15 | #ifdef __KERNEL__ | |
| 16 | #include <linux/types.h> | |
| 17 | #endif | |
| 18 | #include <linux/asn1.h> | |
| 19 | ||
| 20 | typedef int (*asn1_action_t)(void *context, | |
| 21 | size_t hdrlen, /* In case of ANY type */ | |
| 22 | unsigned char tag, /* In case of ANY type */ | |
| 23 | const void *value, size_t vlen); | |
| 24 | ||
| 25 | struct asn1_decoder { | |
| 26 | const unsigned char *machine; | |
| 27 | size_t machlen; | |
| 28 | const asn1_action_t *actions; | |
| 29 | }; | |
| 30 | ||
| 31 | enum asn1_opcode { | |
| 32 | /* The tag-matching ops come first and the odd-numbered slots | |
| 33 | * are for OR_SKIP ops. | |
| 34 | */ | |
| 35 | #define ASN1_OP_MATCH__SKIP 0x01 | |
| 36 | #define ASN1_OP_MATCH__ACT 0x02 | |
| 37 | #define ASN1_OP_MATCH__JUMP 0x04 | |
| 38 | #define ASN1_OP_MATCH__ANY 0x08 | |
| 39 | #define ASN1_OP_MATCH__COND 0x10 | |
| 40 | ||
| 41 | ASN1_OP_MATCH = 0x00, | |
| 42 | ASN1_OP_MATCH_OR_SKIP = 0x01, | |
| 43 | ASN1_OP_MATCH_ACT = 0x02, | |
| 44 | ASN1_OP_MATCH_ACT_OR_SKIP = 0x03, | |
| 45 | ASN1_OP_MATCH_JUMP = 0x04, | |
| 46 | ASN1_OP_MATCH_JUMP_OR_SKIP = 0x05, | |
| 47 | ASN1_OP_MATCH_ANY = 0x08, | |
| 233ce79d | 48 | ASN1_OP_MATCH_ANY_OR_SKIP = 0x09, |
| 4520c6a4 | 49 | ASN1_OP_MATCH_ANY_ACT = 0x0a, |
| 233ce79d | 50 | ASN1_OP_MATCH_ANY_ACT_OR_SKIP = 0x0b, |
| 4520c6a4 DH |
51 | /* Everything before here matches unconditionally */ |
| 52 | ||
| 53 | ASN1_OP_COND_MATCH_OR_SKIP = 0x11, | |
| 54 | ASN1_OP_COND_MATCH_ACT_OR_SKIP = 0x13, | |
| 55 | ASN1_OP_COND_MATCH_JUMP_OR_SKIP = 0x15, | |
| 56 | ASN1_OP_COND_MATCH_ANY = 0x18, | |
| 233ce79d | 57 | ASN1_OP_COND_MATCH_ANY_OR_SKIP = 0x19, |
| 4520c6a4 | 58 | ASN1_OP_COND_MATCH_ANY_ACT = 0x1a, |
| 233ce79d | 59 | ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP = 0x1b, |
| 4520c6a4 DH |
60 | |
| 61 | /* Everything before here will want a tag from the data */ | |
| 233ce79d | 62 | #define ASN1_OP__MATCHES_TAG ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP |
| 4520c6a4 DH |
63 | |
| 64 | /* These are here to help fill up space */ | |
| 233ce79d DH |
65 | ASN1_OP_COND_FAIL = 0x1c, |
| 66 | ASN1_OP_COMPLETE = 0x1d, | |
| 67 | ASN1_OP_ACT = 0x1e, | |
| 68 | ASN1_OP_MAYBE_ACT = 0x1f, | |
| 4520c6a4 DH |
69 | |
| 70 | /* The following eight have bit 0 -> SET, 1 -> OF, 2 -> ACT */ | |
| 71 | ASN1_OP_END_SEQ = 0x20, | |
| 72 | ASN1_OP_END_SET = 0x21, | |
| 73 | ASN1_OP_END_SEQ_OF = 0x22, | |
| 74 | ASN1_OP_END_SET_OF = 0x23, | |
| 75 | ASN1_OP_END_SEQ_ACT = 0x24, | |
| 76 | ASN1_OP_END_SET_ACT = 0x25, | |
| 77 | ASN1_OP_END_SEQ_OF_ACT = 0x26, | |
| 78 | ASN1_OP_END_SET_OF_ACT = 0x27, | |
| 79 | #define ASN1_OP_END__SET 0x01 | |
| 80 | #define ASN1_OP_END__OF 0x02 | |
| 81 | #define ASN1_OP_END__ACT 0x04 | |
| 82 | ||
| 233ce79d DH |
83 | ASN1_OP_RETURN = 0x28, |
| 84 | ||
| 4520c6a4 DH |
85 | ASN1_OP__NR |
| 86 | }; | |
| 87 | ||
| 88 | #define _tag(CLASS, CP, TAG) ((ASN1_##CLASS << 6) | (ASN1_##CP << 5) | ASN1_##TAG) | |
| 89 | #define _tagn(CLASS, CP, TAG) ((ASN1_##CLASS << 6) | (ASN1_##CP << 5) | TAG) | |
| 90 | #define _jump_target(N) (N) | |
| 91 | #define _action(N) (N) | |
| 92 | ||
| 93 | #endif /* _LINUX_ASN1_BER_BYTECODE_H */ |