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- /**
- * @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__ */
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