/** | |
* @file | |
* Abstract Syntax Notation One (ISO 8824, 8825) codec. | |
*/ | |
/* | |
* Copyright (c) 2006 Axon Digital Design B.V., The Netherlands. | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without modification, | |
* are permitted provided that the following conditions are met: | |
* | |
* 1. Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright notice, | |
* this list of conditions and the following disclaimer in the documentation | |
* and/or other materials provided with the distribution. | |
* 3. The name of the author may not be used to endorse or promote products | |
* derived from this software without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT | |
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT | |
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY | |
* OF SUCH DAMAGE. | |
* | |
* Author: Christiaan Simons <christiaan.simons@axon.tv> | |
*/ | |
#ifndef __LWIP_SNMP_ASN1_H__ | |
#define __LWIP_SNMP_ASN1_H__ | |
#include "lwip/opt.h" | |
#include "arch/cc.h" | |
#include "lwip/err.h" | |
#include "lwip/pbuf.h" | |
#include "lwip/snmp.h" | |
#define SNMP_ASN1_UNIV (!0x80 | !0x40) | |
#define SNMP_ASN1_APPLIC (!0x80 | 0x40) | |
#define SNMP_ASN1_CONTXT ( 0x80 | !0x40) | |
#define SNMP_ASN1_CONSTR (0x20) | |
#define SNMP_ASN1_PRIMIT (!0x20) | |
/* universal tags */ | |
#define SNMP_ASN1_INTEG 2 | |
#define SNMP_ASN1_OC_STR 4 | |
#define SNMP_ASN1_NUL 5 | |
#define SNMP_ASN1_OBJ_ID 6 | |
#define SNMP_ASN1_SEQ 16 | |
/* application specific (SNMP) tags */ | |
#define SNMP_ASN1_IPADDR 0 /* octet string size(4) */ | |
#define SNMP_ASN1_COUNTER 1 /* u32_t */ | |
#define SNMP_ASN1_GAUGE 2 /* u32_t */ | |
#define SNMP_ASN1_TIMETICKS 3 /* u32_t */ | |
#define SNMP_ASN1_OPAQUE 4 /* octet string */ | |
/* context specific (SNMP) tags */ | |
#define SNMP_ASN1_PDU_GET_REQ 0 | |
#define SNMP_ASN1_PDU_GET_NEXT_REQ 1 | |
#define SNMP_ASN1_PDU_GET_RESP 2 | |
#define SNMP_ASN1_PDU_SET_REQ 3 | |
#define SNMP_ASN1_PDU_TRAP 4 | |
err_t snmp_asn1_dec_type(struct pbuf *p, u16_t ofs, u8_t *type); | |
err_t snmp_asn1_dec_length(struct pbuf *p, u16_t ofs, u8_t *octets_used, u16_t *length); | |
err_t snmp_asn1_dec_u32t(struct pbuf *p, u16_t ofs, u16_t len, u32_t *value); | |
err_t snmp_asn1_dec_s32t(struct pbuf *p, u16_t ofs, u16_t len, s32_t *value); | |
err_t snmp_asn1_dec_oid(struct pbuf *p, u16_t ofs, u16_t len, struct snmp_obj_id *oid); | |
err_t snmp_asn1_dec_raw(struct pbuf *p, u16_t ofs, u16_t len, u16_t raw_len, u8_t *raw); | |
void snmp_asn1_enc_length_cnt(u16_t length, u8_t *octets_needed); | |
void snmp_asn1_enc_u32t_cnt(u32_t value, u16_t *octets_needed); | |
void snmp_asn1_enc_s32t_cnt(s32_t value, u16_t *octets_needed); | |
void snmp_asn1_enc_oid_cnt(u8_t ident_len, s32_t *ident, u16_t *octets_needed); | |
err_t snmp_asn1_enc_type(struct pbuf *p, u16_t ofs, u8_t type); | |
err_t snmp_asn1_enc_length(struct pbuf *p, u16_t ofs, u16_t length); | |
err_t snmp_asn1_enc_u32t(struct pbuf *p, u16_t ofs, u8_t octets_needed, u32_t value); | |
err_t snmp_asn1_enc_s32t(struct pbuf *p, u16_t ofs, u8_t octets_needed, s32_t value); | |
err_t snmp_asn1_enc_oid(struct pbuf *p, u16_t ofs, u8_t ident_len, s32_t *ident); | |
err_t snmp_asn1_enc_raw(struct pbuf *p, u16_t ofs, u8_t raw_len, u8_t *raw); | |
#endif |