341 lines
8.4 KiB
C
341 lines
8.4 KiB
C
/*
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* Copyright (c) 2001-2003
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* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
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* All rights reserved.
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*
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* Author: Harti Brandt <harti@freebsd.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Begemot: bsnmp/snmpd/snmpd.h,v 1.24 2004/08/06 08:47:13 brandt Exp $
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*
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* Private SNMPd data and functions.
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*/
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#ifdef USE_LIBBEGEMOT
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#include <rpoll.h>
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#else
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#include <isc/eventlib.h>
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#endif
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#define PATH_SYSCONFIG "/etc:/usr/etc:/usr/local/etc"
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#ifdef USE_LIBBEGEMOT
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#define evTimerID int
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#define evFileID int
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#endif
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/*************************************************************
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*
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* Communities
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*/
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struct community {
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struct lmodule *owner; /* who created the community */
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u_int private;/* private name for the module */
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u_int value; /* value of this community */
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u_char * string; /* the community string */
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const u_char * descr; /* description */
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TAILQ_ENTRY(community) link;
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struct asn_oid index;
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};
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/* list of all known communities */
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extern TAILQ_HEAD(community_list, community) community_list;
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/*************************************************************
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*
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* Request IDs.
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*/
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struct idrange {
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u_int type; /* type id */
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int32_t base; /* base of this range */
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int32_t size; /* size of this range */
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int32_t next; /* generator */
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struct lmodule *owner; /* owner module */
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TAILQ_ENTRY(idrange) link;
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};
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/* list of all known ranges */
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extern TAILQ_HEAD(idrange_list, idrange) idrange_list;
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/* identifier generator */
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extern u_int next_idrange;
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/* request id generator for traps */
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extern u_int trap_reqid;
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/*************************************************************
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*
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* Timers
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*/
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struct timer {
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void (*func)(void *);/* user function */
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void *udata; /* user data */
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evTimerID id; /* timer id */
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struct lmodule *owner; /* owner of the timer */
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LIST_ENTRY(timer) link;
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};
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/* list of all current timers */
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extern LIST_HEAD(timer_list, timer) timer_list;
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/*************************************************************
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*
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* File descriptors
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*/
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struct fdesc {
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int fd; /* the file descriptor */
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void (*func)(int, void *);/* user function */
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void *udata; /* user data */
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evFileID id; /* file id */
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struct lmodule *owner; /* owner module of the file */
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LIST_ENTRY(fdesc) link;
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};
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/* list of all current selected files */
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extern LIST_HEAD(fdesc_list, fdesc) fdesc_list;
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/*************************************************************
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*
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* Loadable modules
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*/
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# define LM_SECTION_MAX 14
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struct lmodule {
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char section[LM_SECTION_MAX + 1]; /* and index */
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char *path;
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u_int flags;
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void *handle;
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const struct snmp_module *config;
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TAILQ_ENTRY(lmodule) link;
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TAILQ_ENTRY(lmodule) start;
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struct asn_oid index;
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};
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#define LM_STARTED 0x0001
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#define LM_ONSTARTLIST 0x0002
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extern TAILQ_HEAD(lmodules, lmodule) lmodules;
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struct lmodule *lm_load(const char *, const char *);
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void lm_unload(struct lmodule *);
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void lm_start(struct lmodule *);
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/*************************************************************
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*
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* SNMP ports
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*/
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/*
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* Common input stuff
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*/
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struct port_input {
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int fd; /* socket */
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void *id; /* evSelect handle */
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int stream : 1; /* stream socket */
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int cred : 1; /* want credentials */
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struct sockaddr *peer; /* last received packet */
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socklen_t peerlen;
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int priv : 1; /* peer is privileged */
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u_char *buf; /* receive buffer */
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size_t buflen; /* buffer length */
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size_t length; /* received length */
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size_t consumed; /* how many bytes used */
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};
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struct tport {
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struct asn_oid index; /* table index of this tp point */
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TAILQ_ENTRY(tport) link; /* table link */
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struct transport *transport; /* who handles this */
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};
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TAILQ_HEAD(tport_list, tport);
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int snmpd_input(struct port_input *, struct tport *);
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void snmpd_input_close(struct port_input *);
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/*
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* Transport domain
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*/
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#define TRANS_NAMELEN 64
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struct transport_def {
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const char *name; /* name of this transport */
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struct asn_oid id; /* OBJID of this transport */
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int (*start)(void);
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int (*stop)(int);
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void (*close_port)(struct tport *);
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int (*init_port)(struct tport *);
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ssize_t (*send)(struct tport *, const u_char *, size_t,
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const struct sockaddr *, size_t);
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};
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struct transport {
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struct asn_oid index; /* transport table index */
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TAILQ_ENTRY(transport) link; /* ... and link */
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u_int or_index; /* registration index */
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struct tport_list table; /* list of open ports */
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const struct transport_def *vtab;
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};
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TAILQ_HEAD(transport_list, transport);
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extern struct transport_list transport_list;
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void trans_insert_port(struct transport *, struct tport *);
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void trans_remove_port(struct tport *);
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struct tport *trans_find_port(struct transport *,
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const struct asn_oid *, u_int);
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struct tport *trans_next_port(struct transport *,
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const struct asn_oid *, u_int);
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struct tport *trans_first_port(struct transport *);
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struct tport *trans_iter_port(struct transport *,
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int (*)(struct tport *, intptr_t), intptr_t);
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int trans_register(const struct transport_def *, struct transport **);
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int trans_unregister(struct transport *);
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/*************************************************************
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*
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* SNMPd scalar configuration.
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*/
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struct snmpd {
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/* transmit buffer size */
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u_int32_t txbuf;
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/* receive buffer size */
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u_int32_t rxbuf;
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/* disable community table */
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int comm_dis;
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/* authentication traps */
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int auth_traps;
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/* source address for V1 traps */
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u_char trap1addr[4];
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/* version enable flags */
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uint32_t version_enable;
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};
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extern struct snmpd snmpd;
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#define VERS_ENABLE_V1 0x00000001
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#define VERS_ENABLE_V2C 0x00000002
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#define VERS_ENABLE_V3 0x00000004
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#define VERS_ENABLE_ALL (VERS_ENABLE_V1 | VERS_ENABLE_V2C | VERS_ENABLE_V3)
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/*
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* The debug group
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*/
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struct debug {
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u_int dump_pdus;
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u_int logpri;
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u_int evdebug;
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};
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extern struct debug debug;
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/*
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* SNMPd statistics table
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*/
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struct snmpd_stats {
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u_int32_t inPkts; /* total packets received */
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u_int32_t inBadVersions; /* unknown version number */
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u_int32_t inASNParseErrs; /* fatal parse errors */
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u_int32_t inBadCommunityNames;
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u_int32_t inBadCommunityUses;
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u_int32_t proxyDrops; /* dropped by proxy function */
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u_int32_t silentDrops;
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u_int32_t inBadPduTypes;
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u_int32_t inTooLong;
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u_int32_t noTxbuf;
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u_int32_t noRxbuf;
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};
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extern struct snmpd_stats snmpd_stats;
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/*
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* SNMPd Engine
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*/
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extern struct snmp_engine snmpd_engine;
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/*
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* OR Table
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*/
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struct objres {
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TAILQ_ENTRY(objres) link;
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u_int index;
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struct asn_oid oid; /* the resource OID */
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char descr[256];
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u_int32_t uptime;
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struct lmodule *module;
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};
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TAILQ_HEAD(objres_list, objres);
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extern struct objres_list objres_list;
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/*
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* Trap Sink Table
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*/
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struct trapsink {
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TAILQ_ENTRY(trapsink) link;
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struct asn_oid index;
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u_int status;
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int socket;
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u_char comm[SNMP_COMMUNITY_MAXLEN];
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int version;
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};
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enum {
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TRAPSINK_ACTIVE = 1,
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TRAPSINK_NOT_IN_SERVICE = 2,
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TRAPSINK_NOT_READY = 3,
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TRAPSINK_DESTROY = 6,
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TRAPSINK_V1 = 1,
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TRAPSINK_V2 = 2,
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};
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TAILQ_HEAD(trapsink_list, trapsink);
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extern struct trapsink_list trapsink_list;
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extern const char *syspath;
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/* snmpSerialNo */
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extern int32_t snmp_serial_no;
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int init_actvals(void);
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extern char engine_file[];
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int init_snmpd_engine(void);
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int set_snmpd_engine(void);
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int read_config(const char *, struct lmodule *);
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int define_macro(const char *name, const char *value);
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#define LOG_ASN1_ERRORS 0x10000000
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#define LOG_SNMP_ERRORS 0x20000000
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