| /** |
| * @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 "lwip/err.h" |
| #include "lwip/pbuf.h" |
| #include "lwip/snmp.h" |
| |
| #if LWIP_SNMP |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #define SNMP_ASN1_UNIV (0) /* (!0x80 | !0x40) */ |
| #define SNMP_ASN1_APPLIC (0x40) /* (!0x80 | 0x40) */ |
| #define SNMP_ASN1_CONTXT (0x80) /* ( 0x80 | !0x40) */ |
| |
| #define SNMP_ASN1_CONSTR (0x20) /* ( 0x20) */ |
| #define SNMP_ASN1_PRIMIT (0) /* (!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, u16_t octets_needed, u32_t value); |
| err_t snmp_asn1_enc_s32t(struct pbuf *p, u16_t ofs, u16_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, u16_t raw_len, u8_t *raw); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* LWIP_SNMP */ |
| |
| #endif /* __LWIP_SNMP_ASN1_H__ */ |