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apps/snmp.h
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1 /**
2  * @file
3  * SNMP server main API - start and basic configuration
4  */
5 
6 /*
7  * Copyright (c) 2001, 2002 Leon Woestenberg <leon.woestenberg@axon.tv>
8  * Copyright (c) 2001, 2002 Axon Digital Design B.V., The Netherlands.
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without modification,
12  * are permitted provided that the following conditions are met:
13  *
14  * 1. Redistributions of source code must retain the above copyright notice,
15  * this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright notice,
17  * this list of conditions and the following disclaimer in the documentation
18  * and/or other materials provided with the distribution.
19  * 3. The name of the author may not be used to endorse or promote products
20  * derived from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
25  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
27  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
30  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
31  * OF SUCH DAMAGE.
32  *
33  * This file is part of the lwIP TCP/IP stack.
34  *
35  * Author: Leon Woestenberg <leon.woestenberg@axon.tv>
36  * Martin Hentschel <info@cl-soft.de>
37  *
38  */
39 #ifndef LWIP_HDR_APPS_SNMP_H
40 #define LWIP_HDR_APPS_SNMP_H
41 
42 #include "lwip/apps/snmp_opts.h"
43 
44 #ifdef __cplusplus
45 extern "C" {
46 #endif
47 
48 #if LWIP_SNMP /* don't build if not configured for use in lwipopts.h */
49 
50 #include "lwip/err.h"
51 #include "lwip/apps/snmp_core.h"
52 
53 /** SNMP variable binding descriptor (publically needed for traps) */
54 struct snmp_varbind
55 {
56  /** pointer to next varbind, NULL for last in list */
57  struct snmp_varbind *next;
58  /** pointer to previous varbind, NULL for first in list */
59  struct snmp_varbind *prev;
60 
61  /** object identifier */
62  struct snmp_obj_id oid;
63 
64  /** value ASN1 type */
65  u8_t type;
66  /** object value length */
67  u16_t value_len;
68  /** object value */
69  void *value;
70 };
71 
72 /**
73  * @ingroup snmp_core
74  * Agent setup, start listening to port 161.
75  */
76 void snmp_init(void);
77 void snmp_set_mibs(const struct snmp_mib **mibs, u8_t num_mibs);
78 
79 void snmp_set_device_enterprise_oid(const struct snmp_obj_id* device_enterprise_oid);
80 const struct snmp_obj_id* snmp_get_device_enterprise_oid(void);
81 
82 void snmp_trap_dst_enable(u8_t dst_idx, u8_t enable);
83 void snmp_trap_dst_ip_set(u8_t dst_idx, const ip_addr_t *dst);
84 
85 /** Generic trap: cold start */
86 #define SNMP_GENTRAP_COLDSTART 0
87 /** Generic trap: warm start */
88 #define SNMP_GENTRAP_WARMSTART 1
89 /** Generic trap: link down */
90 #define SNMP_GENTRAP_LINKDOWN 2
91 /** Generic trap: link up */
92 #define SNMP_GENTRAP_LINKUP 3
93 /** Generic trap: authentication failure */
94 #define SNMP_GENTRAP_AUTH_FAILURE 4
95 /** Generic trap: EGP neighbor lost */
96 #define SNMP_GENTRAP_EGP_NEIGHBOR_LOSS 5
97 /** Generic trap: enterprise specific */
98 #define SNMP_GENTRAP_ENTERPRISE_SPECIFIC 6
99 
100 err_t snmp_send_trap_generic(s32_t generic_trap);
101 err_t snmp_send_trap_specific(s32_t specific_trap, struct snmp_varbind *varbinds);
102 err_t snmp_send_trap(const struct snmp_obj_id* oid, s32_t generic_trap, s32_t specific_trap, struct snmp_varbind *varbinds);
103 
104 #define SNMP_AUTH_TRAPS_DISABLED 0
105 #define SNMP_AUTH_TRAPS_ENABLED 1
106 void snmp_set_auth_traps_enabled(u8_t enable);
107 u8_t snmp_get_auth_traps_enabled(void);
108 
109 u8_t snmp_v1_enabled(void);
110 u8_t snmp_v2c_enabled(void);
111 u8_t snmp_v3_enabled(void);
112 void snmp_v1_enable(u8_t enable);
113 void snmp_v2c_enable(u8_t enable);
114 void snmp_v3_enable(u8_t enable);
115 
116 const char * snmp_get_community(void);
117 const char * snmp_get_community_write(void);
118 const char * snmp_get_community_trap(void);
119 void snmp_set_community(const char * const community);
120 void snmp_set_community_write(const char * const community);
121 void snmp_set_community_trap(const char * const community);
122 
123 void snmp_coldstart_trap(void);
124 void snmp_authfail_trap(void);
125 
126 typedef void (*snmp_write_callback_fct)(const u32_t* oid, u8_t oid_len, void* callback_arg);
127 void snmp_set_write_callback(snmp_write_callback_fct write_callback, void* callback_arg);
128 
129 #endif /* LWIP_SNMP */
130 
131 #ifdef __cplusplus
132 }
133 #endif
134 
135 #endif /* LWIP_HDR_APPS_SNMP_H */
snmp_core.h
SNMP core API for implementing MIBs.
err.h
lwIP Error codes
snmp_opts.h
SNMP server options list.
nsapi_addr
IP address structure for passing IP addresses by value.
Definition: nsapi_types.h:235
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