2022-08-02 14:04:25 +00:00
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#ifndef _BIRD_SNMP_SUBAGENT_H_
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#define _BIRD_SNMP_SUBAGENT_H_
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2022-08-10 15:31:32 +00:00
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#include "nest/bird.h"
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#include "snmp.h"
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2022-08-02 14:04:25 +00:00
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2022-08-10 15:31:32 +00:00
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void snmp_start_subagent(struct snmp_proto *p);
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void snmp_stop_subagent(struct snmp_proto *p);
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2022-09-06 16:04:29 +00:00
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void snmp_ping(struct snmp_proto *p);
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#define AGENTX_VERSION 1
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2022-11-05 15:29:00 +00:00
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#define SNMP_STATE_START 0
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#define SNMP_STATE_BGP 1
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#define SNMP_STATE_INVALID 2
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2023-09-04 11:51:29 +00:00
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#define SNMP_ISO 1 /* last of oid .1 */
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#define SNMP_ORG 3 /* last of oid .1.3 */
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#define SNMP_DOD 6 /* last of oid .1.3.6 */
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#define SNMP_INTERNET 1 /* last of oid .1.3.6.1 */
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#define SNMP_MGMT 2 /* last of oid .1.3.6.1.2 */
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#define SNMP_MIB_2 1 /* last of oid .1.3.6.1.2.1 */
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#define SNMP_OSPF_MIB 14 /* part of oid .1.3.6.1.2.1.14 */
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#define SNMP_BGP4_MIB 15 /* part of oid .1.3.6.1.2.1.15 */
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#define SNMP_OSPFv3_MIB 192 /* part of oid .1.3.6.1.2.1.192 */
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extern u32 snmp_internet[4];
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2022-09-06 16:04:29 +00:00
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2023-09-11 11:06:20 +00:00
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#define SNMP_DEFAULT_CONTEXT 0
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2022-11-05 15:29:00 +00:00
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enum SNMP_CLASSES {
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SNMP_CLASS_INVALID = 0,
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SNMP_CLASS_BGP = 1,
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SNMP_CLASS_OSPF,
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SNMP_CLASS_END,
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};
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2022-09-06 16:04:29 +00:00
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enum agentx_type {
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2022-09-20 12:28:57 +00:00
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AGENTX_INTEGER = 2,
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AGENTX_OCTET_STRING = 4,
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AGENTX_NULL = 5,
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AGENTX_OBJECT_ID = 6,
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AGENTX_IP_ADDRESS = 64,
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AGENTX_COUNTER_32 = 65,
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AGENTX_GAUGE_32 = 66,
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AGENTX_TIME_TICKS = 67,
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AGENTX_OPAQUE = 68,
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AGENTX_COUNTER_64 = 70,
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AGENTX_NO_SUCH_OBJECT = 128,
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AGENTX_NO_SUCH_INSTANCE = 129,
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AGENTX_END_OF_MIB_VIEW = 130,
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2024-01-10 11:21:46 +00:00
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AGENTX_INVALID = -1,
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2022-09-06 16:04:29 +00:00
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} PACKED;
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2022-08-10 15:31:32 +00:00
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2023-07-26 12:02:23 +00:00
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enum snmp_search_res {
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SNMP_SEARCH_OK = 0,
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SNMP_SEARCH_NO_OBJECT = 1,
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SNMP_SEARCH_NO_INSTANCE = 2,
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SNMP_SEARCH_END_OF_VIEW = 3,
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};
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2022-09-06 16:04:29 +00:00
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#define AGENTX_ADMIN_STOP 1
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#define AGENTX_ADMIN_START 2
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2022-08-10 15:31:32 +00:00
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#define AGENTX_PRIORITY 127
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2023-09-11 11:06:20 +00:00
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#define SNMP_REGISTER_TREE 0
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#define SNMP_REGISTER_INSTANCE 1
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2023-11-15 11:37:10 +00:00
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enum agentx_flags {
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AGENTX_FLAG_BLANK = 0x00,
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AGENTX_FLAG_INSTANCE_REGISTRATION = 0x01,
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AGENTX_FLAG_NEW_INDEX = 0x02,
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AGENTX_FLAG_ANY_INDEX = 0x04,
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AGENTX_NON_DEFAULT_CONTEXT = 0x08,
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AGENTX_NETWORK_BYTE_ORDER = 0x10,
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} PACKED;
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#define AGENTX_FLAGS_MASK (AGENTX_FLAG_INSTANCE_REGISTRATION \
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| AGENTX_FLAG_NEW_INDEX \
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| AGENTX_FLAG_ANY_INDEX \
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| AGENTX_NON_DEFAULT_CONTEXT \
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| AGENTX_NETWORK_BYTE_ORDER)
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// TODO - make me compile time option
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2022-09-06 16:04:29 +00:00
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#define SNMP_NATIVE
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2023-11-15 11:37:10 +00:00
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#if !(defined(SNMP_NATIVE) || defined(SNMP_NETWORK_BYTE_ORDER))
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# error "SNMP: currently support only native byte order or network byte order."
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#endif
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#if defined(SNMP_NATIVE) && defined(SNMP_NETWORK_BYTE_ORDER) && !defined(CPU_BIG_ENDIAN)
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# error "SNMP: couldn't use both native byte order and network byte order " \
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"(big endian) on little endian machine."
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#endif
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#if (defined(SNMP_NATIVE) && defined(CPU_BIG_ENDIAN)) || defined(SNMP_NETWORK_BYTE_ORDER)
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#define SNMP_ORDER AGENTX_NETWORK_BYTE_ORDER
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#else
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#define SNMP_ORDER 0
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#endif
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2022-09-06 16:04:29 +00:00
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#ifdef SNMP_NATIVE
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2023-07-26 12:02:23 +00:00
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#define STORE_U32(dest, val) ((dest) = (u32) (val))
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#define STORE_U16(dest, val) ((dest) = (u16) (val))
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#define STORE_U8(dest, val) ((dest) = (u8) (val))
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#define STORE_PTR(ptr, val) (*((u32 *) (ptr)) = (u32) (val))
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2023-11-15 11:37:10 +00:00
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#define LOAD_U32(src) *((u32 *) &(src))
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#define LOAD_U16(src) *((u16 *) &(src))
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#define LOAD_U8(src) *((u8 *) &(src))
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#define LOAD_PTR(ptr) *((u32 *) (ptr))
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#endif
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#if defined(SNMP_NETWORK_BYTE_ORDER) && (!defined(SNMP_NATIVE) || defined(CPU_BIG_ENDIAN))
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2023-07-26 12:02:23 +00:00
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#define STORE_U32(dest, val) put_u32(&(dest), (val))
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#define STORE_U16(dest, val) put_u16(&(dest), (val))
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#define STORE_U8(dest, val) put_u8(&(dest), (val))
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#define STORE_PTR(ptr, val) put_u32(ptr, val)
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2022-09-06 16:04:29 +00:00
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2023-11-15 11:37:10 +00:00
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#define LOAD_U32(src) get_u32(&(src))
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#define LOAD_U16(src) get_u16(&(src))
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#define LOAD_U8(src) get_u8(&(src))
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#define LOAD_PTR(src) get_u32(ptr)
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2022-09-06 16:04:29 +00:00
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#endif
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2023-11-15 11:37:10 +00:00
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#define LOAD_STR(/* byte * */buf, str, length) ({ \
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length = LOAD_PTR(buf); \
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2023-09-11 11:06:20 +00:00
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length > 0 ? (str = buf + 4) : (str = NULL); })
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2023-11-15 11:37:10 +00:00
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#define COPY_STR(proto, buf, str, length) ({ \
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length = LOAD_PTR(buf); \
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2023-10-18 16:06:24 +00:00
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/*log(L_INFO "LOAD_STR(), %p %u", proto->pool, length + 1); */ \
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2023-10-18 14:51:21 +00:00
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str = mb_alloc(proto->pool, length + 1); \
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2023-09-11 11:06:20 +00:00
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memcpy(str, buf+4, length); \
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2023-07-26 12:30:34 +00:00
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str[length] = '\0'; /* set term. char */ \
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2023-09-11 11:06:20 +00:00
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buf += 4 + snmp_str_size_from_len(length); })
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2023-11-15 11:37:10 +00:00
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#define SNMP_PUT_OID(buf, size, oid) \
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2023-08-08 17:00:54 +00:00
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({ \
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struct agentx_varbind *vb = (void *) buf; \
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2023-11-15 11:37:10 +00:00
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SNMP_FILL_VARBIND(vb, oid); \
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2023-07-26 12:02:23 +00:00
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})
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2023-11-15 11:37:10 +00:00
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#define SNMP_FILL_VARBIND(vb, oid) \
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snmp_oid_copy(&(vb)->name, (oid)), snmp_oid_size((oid))
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2023-08-08 17:00:54 +00:00
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2022-08-10 15:31:32 +00:00
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struct agentx_header {
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u8 version;
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u8 type;
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u8 flags;
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2024-01-23 23:23:31 +00:00
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u8 reserved; /* always zero filled */
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2023-07-26 12:30:34 +00:00
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u32 session_id; /* AgentX sessionID established by Open-PDU */
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u32 transaction_id; /* last transactionID seen/used */
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u32 packet_id; /* last packetID seen/used */
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2023-10-18 11:30:14 +00:00
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u32 payload; /* payload_length of the packet without header */
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2022-08-10 15:31:32 +00:00
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};
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2024-01-10 11:21:46 +00:00
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#define AGENTX_HEADER_SIZE 20
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STATIC_ASSERT(AGENTX_HEADER_SIZE == sizeof(struct agentx_header));
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2022-08-10 15:31:32 +00:00
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struct oid {
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u8 n_subid;
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u8 prefix;
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u8 include;
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2024-01-23 23:23:31 +00:00
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u8 reserved; /* always zero filled */
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2022-09-06 16:04:29 +00:00
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u32 ids[];
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2022-08-10 15:31:32 +00:00
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};
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struct agentx_varbind {
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u16 type;
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2024-01-23 23:23:31 +00:00
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u16 reserved; /* always zero filled */
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2022-08-10 15:31:32 +00:00
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/* oid part */
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struct oid name;
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2023-11-15 10:29:19 +00:00
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/* AgentX variable binding data optionaly here */
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2022-08-10 15:31:32 +00:00
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};
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struct agentx_search_range {
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2024-01-10 11:21:46 +00:00
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struct oid *start;
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struct oid *end;
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};
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/* AgentX Octet String */
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struct agentx_octet_str {
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u32 length;
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byte data[0];
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2022-08-10 15:31:32 +00:00
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};
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2022-11-15 15:29:03 +00:00
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struct agentx_getbulk {
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u16 non_repeaters;
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u16 max_repetitions;
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};
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2022-08-10 15:31:32 +00:00
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struct agentx_response {
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struct agentx_header h;
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u32 uptime;
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2023-07-26 12:30:34 +00:00
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u16 error;
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2022-08-10 15:31:32 +00:00
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u16 index;
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};
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2024-01-10 11:21:46 +00:00
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STATIC_ASSERT(4 + 2 + 2 + AGENTX_HEADER_SIZE == sizeof(struct agentx_response));
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2022-09-06 16:04:29 +00:00
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struct agentx_close_pdu {
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struct agentx_header h;
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u8 reason;
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2024-01-23 23:23:31 +00:00
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u8 reserved1; /* reserved u24 */
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u16 reserved2; /* whole u24 is always zero filled */
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2022-09-06 16:04:29 +00:00
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};
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2023-09-11 11:06:20 +00:00
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struct agentx_un_register_hdr {
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2022-09-06 16:04:29 +00:00
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u8 timeout;
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u8 priority;
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u8 range_subid;
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2024-01-23 23:23:31 +00:00
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u8 reserved; /* always zero filled */
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2022-09-06 16:04:29 +00:00
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};
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2022-08-10 15:31:32 +00:00
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2022-11-19 22:00:02 +00:00
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struct agentx_bulk_state {
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struct agentx_getbulk getbulk;
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u16 index;
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u16 repetition;
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2023-10-18 11:30:14 +00:00
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u32 repeaters;
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2022-11-19 22:00:02 +00:00
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};
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2023-11-08 09:55:42 +00:00
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enum agentx_pdu_types {
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AGENTX_OPEN_PDU = 1, /* agentx-Open-PDU */
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AGENTX_CLOSE_PDU = 2, /* agentx-Close-PDU */
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AGENTX_REGISTER_PDU = 3, /* agentx-Regiter-PDU */
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AGENTX_UNREGISTER_PDU = 4, /* agentx-Unregister-PDU */
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AGENTX_GET_PDU = 5, /* agentx-Get-PDU */
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AGENTX_GET_NEXT_PDU = 6, /* agentx-GetNext-PDU */
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AGENTX_GET_BULK_PDU = 7, /* agentx-GetBulk-PDU */
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AGENTX_TEST_SET_PDU = 8, /* agentx-TestSet-PDU */
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AGENTX_COMMIT_SET_PDU = 9, /* agentx-CommitSet-PDU */
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AGENTX_UNDO_SET_PDU = 10, /* agentx-UndoSet-PDU */
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AGENTX_CLEANUP_SET_PDU = 11, /* agentx-CleanupSet-PDU */
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AGENTX_NOTIFY_PDU = 12, /* agentx-Notify-PDU */
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AGENTX_PING_PDU = 13, /* agentx-Ping-PDU */
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AGENTX_INDEX_ALLOCATE_PDU = 14, /* agentx-IndexAllocate-PDU */
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AGENTX_INDEX_DEALLOCATE_PDU = 15, /* agentx-IndexDeallocate-PDU */
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AGENTX_ADD_AGENT_CAPS_PDU = 16, /* agentx-AddAgentCaps-PDU */
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AGENTX_REMOVE_AGENT_CAPS_PDU = 17, /* agentx-RemoveAgentCaps-PDU */
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AGENTX_RESPONSE_PDU = 18, /* agentx-Response-PDU */
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2022-08-10 15:31:32 +00:00
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} PACKED;
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2023-11-08 09:55:42 +00:00
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/* agentx-Close-PDU close reasons */
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2022-08-10 15:31:32 +00:00
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enum agentx_close_reasons {
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AGENTX_CLOSE_OTHER = 1,
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AGENTX_CLOSE_PARSE_ERROR = 2,
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AGENTX_CLOSE_PROTOCOL_ERROR = 3,
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AGENTX_CLOSE_TIMEOUTS = 4,
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AGENTX_CLOSE_SHUTDOWN = 5,
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AGENTX_CLOSE_BY_MANAGER = 6,
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} PACKED;
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2023-11-08 09:55:42 +00:00
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/* agentx-Response-PDU - result errors */
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enum agentx_response_errs {
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/* response error to both Administrative and SNMP messages */
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AGENTX_RES_NO_ERROR = 0, /* noAgentXError */
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/* response errors to SNMP messages */
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AGENTX_RES_GEN_ERROR = 5, /* genError */
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AGENTX_RES_NO_ACCESS = 6, /* noAccess */
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AGENTX_RES_WRONG_TYPE = 7, /* wrongType */
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AGENTX_RES_WRONG_LENGTH = 8, /* wrongLength */
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AGENTX_RES_WRONG_ENCODING = 9, /* wrongEncoding */
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AGENTX_RES_WRONG_VALUE = 10, /* wrongValue*/
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AGENTX_RES_NO_CREATION = 11, /* noCreation */
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AGENTX_RES_INCONSISTENT_VALUE = 12, /* inconsistentValue */
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AGENTX_RES_RESOURCE_UNAVAILABLE = 13, /* resourceUnavailable */
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AGENTX_RES_COMMIT_FAILED = 14, /* commitFailed */
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AGENTX_RES_UNDO_FAILED = 15, /* undoFailed */
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AGENTX_RES_NOT_WRITABLE = 17, /* notWritable */
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AGENTX_RES_INCONSISTENT_NAME = 18, /* inconsistentName */
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/* response error to Administrative messages */
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AGENTX_RES_OPEN_FAILED = 256, /* openFailed */
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AGENTX_RES_NOT_OPEN = 257, /* notOpen */
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AGENTX_RES_INDEX_WRONG_TYPE = 258, /* indexWrongType */
|
|
|
|
AGENTX_RES_INDEX_ALREADY_ALLOC = 259, /* indexAlreadyAlloc */
|
|
|
|
AGENTX_RES_INDEX_NONE_AVAIL = 260, /* indexNoneAvail */
|
|
|
|
AGENTX_RES_NOT_ALLOCATED = 261, /* notAllocated */
|
|
|
|
AGENTX_RES_UNSUPPORTED_CONTEXT = 262, /* unsupportedContext */
|
|
|
|
AGENTX_RES_DUPLICATE_REGISTER = 263, /* duplicateRegister */
|
|
|
|
AGENTX_RES_UNKNOWN_REGISTER = 264, /* unknownRegister */
|
|
|
|
AGENTX_RES_UNKNOWN_AGENT_CAPS = 265, /* unknownAgentCaps */
|
|
|
|
AGENTX_RES_PARSE_ERROR = 266, /* parseError */
|
|
|
|
AGENTX_RES_REQUEST_DENIED = 267, /* requestDenied */
|
|
|
|
AGENTX_RES_PROCESSING_ERR = 268, /* processingError */
|
2022-08-10 15:31:32 +00:00
|
|
|
} PACKED;
|
|
|
|
|
2024-01-10 11:21:46 +00:00
|
|
|
/* SNMP PDU TX-buffer info */
|
2023-09-11 11:06:20 +00:00
|
|
|
struct snmp_pdu {
|
2023-07-26 12:02:23 +00:00
|
|
|
byte *buffer; /* pointer to buffer */
|
|
|
|
uint size; /* unused space in buffer */
|
2023-11-08 09:55:42 +00:00
|
|
|
enum agentx_response_errs error; /* storage for result of current action */
|
|
|
|
u32 index; /* index on which the error was found */
|
2023-07-26 12:02:23 +00:00
|
|
|
};
|
|
|
|
|
2024-01-10 11:21:46 +00:00
|
|
|
struct snmp_packet_info {
|
|
|
|
node n;
|
|
|
|
u8 type; // enum type
|
|
|
|
u32 session_id;
|
|
|
|
u32 transaction_id;
|
|
|
|
u32 packet_id;
|
|
|
|
void *data;
|
|
|
|
};
|
|
|
|
|
2023-11-08 09:55:42 +00:00
|
|
|
#if 0
|
2023-07-26 12:02:23 +00:00
|
|
|
struct agentx_alloc_context {
|
|
|
|
u8 is_instance; /* flag INSTANCE_REGISTRATION */
|
|
|
|
u8 new_index; /* flag NEW_INDEX */
|
|
|
|
u8 any_index; /* flag ANY_INDEX */
|
|
|
|
char *context; /* context to allocate in */
|
|
|
|
uint clen; /* length of context string */
|
|
|
|
};
|
2023-11-08 09:55:42 +00:00
|
|
|
#endif
|
2023-07-26 12:02:23 +00:00
|
|
|
|
2022-08-10 15:31:32 +00:00
|
|
|
int snmp_rx(sock *sk, uint size);
|
2022-12-17 17:16:19 +00:00
|
|
|
int snmp_rx_stop(sock *sk, uint size);
|
|
|
|
void snmp_down(struct snmp_proto *p);
|
2023-09-11 11:06:20 +00:00
|
|
|
void snmp_register(struct snmp_proto *p, struct oid *oid, uint index, uint len, u8 is_instance, uint contid);
|
|
|
|
void snmp_unregister(struct snmp_proto *p, struct oid *oid, uint index, uint len, uint contid);
|
2023-09-04 12:01:08 +00:00
|
|
|
void snmp_notify_pdu(struct snmp_proto *p, struct oid *oid, void *data, uint size, int include_uptime);
|
2022-11-05 15:29:00 +00:00
|
|
|
|
2023-09-11 11:06:20 +00:00
|
|
|
void snmp_manage_tbuf(struct snmp_proto *p, struct snmp_pdu *c);
|
2023-07-26 12:02:23 +00:00
|
|
|
|
2023-11-15 11:37:10 +00:00
|
|
|
struct oid *snmp_prefixize(struct snmp_proto *p, const struct oid *o);
|
2023-07-26 12:02:23 +00:00
|
|
|
u8 snmp_get_mib_class(const struct oid *oid);
|
|
|
|
|
2023-11-15 14:03:55 +00:00
|
|
|
void snmp_register_mibs(struct snmp_proto *p);
|
|
|
|
void snmp_bgp_start(struct snmp_proto *p);
|
|
|
|
|
2023-09-04 11:53:45 +00:00
|
|
|
|
2022-12-10 12:22:37 +00:00
|
|
|
// debug wrapper
|
2023-10-18 16:06:24 +00:00
|
|
|
#if 0
|
2022-12-10 12:22:37 +00:00
|
|
|
#define snmp_log(...) log(L_INFO "snmp " __VA_ARGS__)
|
2023-10-18 16:06:24 +00:00
|
|
|
#else
|
|
|
|
#define snmp_log(...) do { } while(0)
|
|
|
|
#endif
|
2022-12-10 12:22:37 +00:00
|
|
|
|
2022-08-02 14:04:25 +00:00
|
|
|
#endif
|