04d1781439
This patch adds a new table begemotSnmpdTransInetTable that uses the InetAddressType textual convention and can be used to create listening ports for IPv4, IPv6, zoned IPv6 and based on DNS names. It also supports future extension beyond UDP by adding a protocol identifier to the table index. In order to support this gensnmptree had to be modified. Submitted by: harti MFC after: 1 month Relnotes: yes Differential Revision: https://reviews.freebsd.org/D16654
347 lines
8.7 KiB
C
347 lines
8.7 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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void snmpd_input_init(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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ssize_t (*recv)(struct tport *, struct port_input *);
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/** send via a multi-socket port */
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ssize_t (*send2)(struct tport *, const u_char *, size_t,
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struct port_input *);
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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 + 1];
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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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void update_snmpd_engine_time(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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