git.joshuawise.com / netwatch.git / blame
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|---|---|---|
| 6e6d4a8b JP |
1 | /** |
| 2 | * @file | |
| 3 | * Abstract Syntax Notation One (ISO 8824, 8825) codec. | |
| 4 | */ | |
| 5 | ||
| 6 | /* | |
| 7 | * Copyright (c) 2006 Axon Digital Design B.V., The Netherlands. | |
| 8 | * All rights reserved. | |
| 9 | * | |
| 10 | * Redistribution and use in source and binary forms, with or without modification, | |
| 11 | * are permitted provided that the following conditions are met: | |
| 12 | * | |
| 13 | * 1. Redistributions of source code must retain the above copyright notice, | |
| 14 | * this list of conditions and the following disclaimer. | |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 16 | * this list of conditions and the following disclaimer in the documentation | |
| 17 | * and/or other materials provided with the distribution. | |
| 18 | * 3. The name of the author may not be used to endorse or promote products | |
| 19 | * derived from this software without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
| 22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| 23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT | |
| 24 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT | |
| 26 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
| 29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY | |
| 30 | * OF SUCH DAMAGE. | |
| 31 | * | |
| 32 | * Author: Christiaan Simons <christiaan.simons@axon.tv> | |
| 33 | */ | |
| 34 | ||
| 35 | #ifndef __LWIP_SNMP_ASN1_H__ | |
| 36 | #define __LWIP_SNMP_ASN1_H__ | |
| 37 | ||
| 38 | #include "lwip/opt.h" | |
| 39 | #include "lwip/err.h" | |
| 40 | #include "lwip/pbuf.h" | |
| 41 | #include "lwip/snmp.h" | |
| 42 | ||
| 43 | #ifdef __cplusplus | |
| 44 | extern "C" { | |
| 45 | #endif | |
| 46 | ||
| 47 | #define SNMP_ASN1_UNIV (!0x80 | !0x40) | |
| 48 | #define SNMP_ASN1_APPLIC (!0x80 | 0x40) | |
| 49 | #define SNMP_ASN1_CONTXT ( 0x80 | !0x40) | |
| 50 | ||
| 51 | #define SNMP_ASN1_CONSTR (0x20) | |
| 52 | #define SNMP_ASN1_PRIMIT (!0x20) | |
| 53 | ||
| 54 | /* universal tags */ | |
| 55 | #define SNMP_ASN1_INTEG 2 | |
| 56 | #define SNMP_ASN1_OC_STR 4 | |
| 57 | #define SNMP_ASN1_NUL 5 | |
| 58 | #define SNMP_ASN1_OBJ_ID 6 | |
| 59 | #define SNMP_ASN1_SEQ 16 | |
| 60 | ||
| 61 | /* application specific (SNMP) tags */ | |
| 62 | #define SNMP_ASN1_IPADDR 0 /* octet string size(4) */ | |
| 63 | #define SNMP_ASN1_COUNTER 1 /* u32_t */ | |
| 64 | #define SNMP_ASN1_GAUGE 2 /* u32_t */ | |
| 65 | #define SNMP_ASN1_TIMETICKS 3 /* u32_t */ | |
| 66 | #define SNMP_ASN1_OPAQUE 4 /* octet string */ | |
| 67 | ||
| 68 | /* context specific (SNMP) tags */ | |
| 69 | #define SNMP_ASN1_PDU_GET_REQ 0 | |
| 70 | #define SNMP_ASN1_PDU_GET_NEXT_REQ 1 | |
| 71 | #define SNMP_ASN1_PDU_GET_RESP 2 | |
| 72 | #define SNMP_ASN1_PDU_SET_REQ 3 | |
| 73 | #define SNMP_ASN1_PDU_TRAP 4 | |
| 74 | ||
| 75 | err_t snmp_asn1_dec_type(struct pbuf *p, u16_t ofs, u8_t *type); | |
| 76 | err_t snmp_asn1_dec_length(struct pbuf *p, u16_t ofs, u8_t *octets_used, u16_t *length); | |
| 77 | err_t snmp_asn1_dec_u32t(struct pbuf *p, u16_t ofs, u16_t len, u32_t *value); | |
| 78 | err_t snmp_asn1_dec_s32t(struct pbuf *p, u16_t ofs, u16_t len, s32_t *value); | |
| 79 | err_t snmp_asn1_dec_oid(struct pbuf *p, u16_t ofs, u16_t len, struct snmp_obj_id *oid); | |
| 80 | err_t snmp_asn1_dec_raw(struct pbuf *p, u16_t ofs, u16_t len, u16_t raw_len, u8_t *raw); | |
| 81 | ||
| 82 | void snmp_asn1_enc_length_cnt(u16_t length, u8_t *octets_needed); | |
| 83 | void snmp_asn1_enc_u32t_cnt(u32_t value, u16_t *octets_needed); | |
| 84 | void snmp_asn1_enc_s32t_cnt(s32_t value, u16_t *octets_needed); | |
| 85 | void snmp_asn1_enc_oid_cnt(u8_t ident_len, s32_t *ident, u16_t *octets_needed); | |
| 86 | err_t snmp_asn1_enc_type(struct pbuf *p, u16_t ofs, u8_t type); | |
| 87 | err_t snmp_asn1_enc_length(struct pbuf *p, u16_t ofs, u16_t length); | |
| 88 | err_t snmp_asn1_enc_u32t(struct pbuf *p, u16_t ofs, u8_t octets_needed, u32_t value); | |
| 89 | err_t snmp_asn1_enc_s32t(struct pbuf *p, u16_t ofs, u8_t octets_needed, s32_t value); | |
| 90 | err_t snmp_asn1_enc_oid(struct pbuf *p, u16_t ofs, u8_t ident_len, s32_t *ident); | |
| 91 | err_t snmp_asn1_enc_raw(struct pbuf *p, u16_t ofs, u8_t raw_len, u8_t *raw); | |
| 92 | ||
| 93 | #ifdef __cplusplus | |
| 94 | } | |
| 95 | #endif | |
| 96 | ||
| 97 | #endif /* __LWIP_SNMP_ASN1_H__ */ |