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114 lines
4.2 KiB
C
114 lines
4.2 KiB
C
#ifndef _BIRD_SNMP_UTILS_H_
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#define _BIRD_SNMP_UTILS_H_
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#include "subagent.h"
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uint snmp_pkt_len(const byte *start, const byte *end);
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/*
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*
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* AgentX Variable Biding (VarBind) utils
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*
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*/
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/*
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* AgentX - Variable Binding (VarBind) type utils
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*/
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void snmp_set_varbind_type(struct agentx_varbind *vb, enum agentx_type t);
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enum agentx_type snmp_get_varbind_type(const struct agentx_varbind *vb);
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int agentx_type_size(enum agentx_type t);
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/* type Octet String */
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size_t snmp_str_size_from_len(uint len);
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size_t snmp_str_size(const char *str);
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/* type OID - Object Identifier */
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int snmp_is_oid_empty(const struct oid *oid);
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int snmp_oid_is_prefixable(const struct oid *oid);
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uint snmp_oid_size(const struct oid *o);
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size_t snmp_oid_size_from_len(uint n_subid);
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void snmp_oid_copy(struct oid *dest, const struct oid *src);
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void snmp_oid_copy2(struct oid *dest, const struct oid *src);
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int snmp_oid_compare(const struct oid *first, const struct oid *second);
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void snmp_oid_common_ancestor(const struct oid *left, const struct oid *right, struct oid *result);
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static inline int
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snmp_oid_is_prefixed(const struct oid *oid)
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{
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return LOAD_U8(oid->prefix) != 0;
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}
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/* type IPv4 */
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int snmp_valid_ip4_index(const struct oid *o, uint start);
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int snmp_valid_ip4_index_unsafe(const struct oid *o, uint start);
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void snmp_oid_ip4_index(struct oid *o, uint start, ip4_addr addr);
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/*
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* AgentX - Variable Binding (VarBind) manupulation
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*/
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uint snmp_varbind_hdr_size_from_oid(const struct oid *oid);
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uint snmp_varbind_header_size(const struct agentx_varbind *vb);
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uint snmp_varbind_size(const struct agentx_varbind *vb, uint limit);
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uint snmp_varbind_size_unsafe(const struct agentx_varbind *vb);
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size_t snmp_varbind_size_from_len(uint n_subid, enum agentx_type t, uint len);
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int snmp_test_varbind(const struct agentx_varbind *vb);
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void *snmp_varbind_data(const struct agentx_varbind *vb);
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struct oid *snmp_varbind_set_name_len(struct snmp_proto *p, struct agentx_varbind **vb, u8 len, struct snmp_pdu *c);
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void snmp_varbind_duplicate_hdr(struct snmp_proto *p, struct agentx_varbind **vb, struct snmp_pdu *c);
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/*
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* AgentX - PDU headers, types, contexts
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*/
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void snmp_session(const struct snmp_proto *p, struct agentx_header *h);
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int snmp_has_context(const struct agentx_header *h);
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void snmp_pdu_context(struct snmp_pdu *pdu, sock *sk);
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struct oid *snmp_oid_duplicate(pool *pool, const struct oid *oid);
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struct oid *snmp_oid_blank(struct snmp_proto *p);
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int snmp_test_close_reason(byte value);
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/*
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* AgentX - TX buffer manipulation
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*/
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/* Functions filling buffer a typed value */
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struct agentx_varbind *snmp_create_varbind(byte *buf, struct oid *oid);
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struct agentx_varbind *snmp_create_varbind_null(byte *buf);
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void snmp_varbind_int(struct agentx_varbind *vb, struct snmp_pdu *c, u32 val);
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void snmp_varbind_counter32(struct agentx_varbind *vb, struct snmp_pdu *c, u32 val);
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void snmp_varbind_gauge32(struct agentx_varbind *vb, struct snmp_pdu *c, s64 time);
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void snmp_varbind_ticks(struct agentx_varbind *vb, struct snmp_pdu *c, u32 val);
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void snmp_varbind_ip4(struct agentx_varbind *vb, struct snmp_pdu *c, ip4_addr addr);
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void snmp_varbind_nstr(struct agentx_varbind *vb, struct snmp_pdu *c, const char *str, uint len);
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/* Raw */
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byte *snmp_no_such_object(byte *buf, struct agentx_varbind *vb, struct oid *oid);
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byte *snmp_no_such_instance(byte *buf, struct agentx_varbind *vb, struct oid *oid);
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byte *snmp_put_str(byte *buf, const char *str);
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byte *snmp_put_nstr(byte *buf, const char *str, uint len);
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byte *snmp_put_blank(byte *buf);
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byte *snmp_put_oid(byte *buf, struct oid *oid);
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byte *snmp_put_ip4(byte *buf, ip4_addr ip4);
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byte *snmp_put_fbyte(byte *buf, u8 data);
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/*
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*
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* Helpers, Misc, Debugging
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*
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*/
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struct snmp_registration *snmp_registration_create(struct snmp_proto *p, u8 mib_class);
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int snmp_registration_match(struct snmp_registration *r, struct agentx_header *h, u8 class);
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void snmp_dump_packet(byte *pkt, uint size);
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void snmp_oid_dump(const struct oid *oid);
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void snmp_oid_log(const struct oid *oid);
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enum agentx_type snmp_search_res_to_type(enum snmp_search_res res);
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#define AGENTX_TYPE_INT_SIZE ((uint) agentx_type_size(AGENTX_INTEGER))
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#define AGENTX_TYPE_IP4_SIZE ((uint) agentx_type_size(AGENTX_IP_ADDRESS))
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#define AGENTX_TYPE_COUNTER32_SIZE ((uint) agentx_type_size(AGENTX_COUNTER_32))
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#endif
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