Date: Mon, 20 Dec 2010 17:13:15 +0000 (UTC) From: Shteryana Shopova <syrinx@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r216594 - in head: contrib/bsnmp/lib contrib/bsnmp/snmp_target contrib/bsnmp/snmp_usm contrib/bsnmp/snmp_vacm contrib/bsnmp/snmpd lib/libbsnmp/libbsnmp usr.sbin/bsnmpd/bsnmpd usr.sbin/b... Message-ID: <201012201713.oBKHDFZ0069286@svn.freebsd.org>
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Author: syrinx Date: Mon Dec 20 17:13:14 2010 New Revision: 216594 URL: http://svn.freebsd.org/changeset/base/216594 Log: Bring in a SNMP module that allows configuration of SNMPv3 Notification targets. Sponsored by: The FreeBSD Foundation Reviewed by: philip Approved by: philip Added: head/contrib/bsnmp/lib/tc.def (contents, props changed) head/contrib/bsnmp/snmp_target/ head/contrib/bsnmp/snmp_target/snmp_target.3 (contents, props changed) head/contrib/bsnmp/snmp_target/target_snmp.c (contents, props changed) head/contrib/bsnmp/snmp_target/target_tree.def (contents, props changed) head/usr.sbin/bsnmpd/modules/snmp_target/ head/usr.sbin/bsnmpd/modules/snmp_target/Makefile (contents, props changed) Modified: head/contrib/bsnmp/lib/bsnmplib.3 head/contrib/bsnmp/lib/snmp.c head/contrib/bsnmp/lib/snmp.h head/contrib/bsnmp/lib/snmpagent.c head/contrib/bsnmp/lib/snmpclient.c head/contrib/bsnmp/lib/snmppriv.h head/contrib/bsnmp/snmp_usm/snmp_usm.3 head/contrib/bsnmp/snmp_usm/usm_tree.def head/contrib/bsnmp/snmp_vacm/vacm_tree.def head/contrib/bsnmp/snmpd/main.c head/contrib/bsnmp/snmpd/snmpmod.3 head/contrib/bsnmp/snmpd/snmpmod.h head/contrib/bsnmp/snmpd/trap.c head/contrib/bsnmp/snmpd/tree.def head/lib/libbsnmp/libbsnmp/Makefile head/usr.sbin/bsnmpd/bsnmpd/Makefile head/usr.sbin/bsnmpd/modules/Makefile head/usr.sbin/bsnmpd/modules/snmp_bridge/bridge_tree.def head/usr.sbin/bsnmpd/modules/snmp_wlan/wlan_tree.def Modified: head/contrib/bsnmp/lib/bsnmplib.3 ============================================================================== --- head/contrib/bsnmp/lib/bsnmplib.3 Mon Dec 20 17:08:22 2010 (r216593) +++ head/contrib/bsnmp/lib/bsnmplib.3 Mon Dec 20 17:13:14 2010 (r216594) @@ -37,7 +37,7 @@ .\" .\" $Begemot: bsnmp/lib/bsnmplib.3,v 1.9 2005/10/04 08:46:51 brandt_h Exp $ .\" -.Dd September 9, 2010 +.Dd December 19, 2010 .Dt BSNMPLIB 3 .Os .Sh NAME @@ -50,6 +50,7 @@ .Nm snmp_pdu_decode_header , .Nm snmp_pdu_decode_scoped , .Nm snmp_pdu_decode_secmode , +.Nm snmp_pdu_init_secparams , .Nm snmp_pdu_dump , .Nm snmp_passwd_to_keys , .Nm snmp_get_local_keys , @@ -83,6 +84,8 @@ Begemot SNMP library .Ft enum snmp_code .Fn snmp_pdu_decode_secmode "struct asn_buf *buf" "struct snmp_pdu *pdu" .Ft void +.Fn snmp_pdu_init_secparams "struct snmp_pdu *pdu" +.Ft void .Fn snmp_pdu_dump "const struct snmp_pdu *pdu" .Ft enum snmp_code .Fn snmp_passwd_to_keys "struct snmp_user *user" "char *passwd" @@ -175,12 +178,18 @@ This structure represents an SNMP engine Architecture described in RFC 3411. .Pp .Bd -literal -offset indent -#define SNMP_USM_NAME_SIZ (32 + 1) +#define SNMP_ADM_STR32_SIZ (32 + 1) #define SNMP_AUTH_KEY_SIZ 40 #define SNMP_PRIV_KEY_SIZ 32 +enum snmp_usm_level { + SNMP_noAuthNoPriv = 1, + SNMP_authNoPriv = 2, + SNMP_authPriv = 3 +}; + struct snmp_user { - char sec_name[SNMP_USM_NAME_SIZ]; + char sec_name[SNMP_ADM_STR32_SIZ]; enum snmp_authentication auth_proto; enum snmp_privacy priv_proto; uint8_t auth_key[SNMP_AUTH_KEY_SIZ]; @@ -230,7 +239,9 @@ contain the authentication and privacy k #define SNMP_MSG_PRIV_FLAG 0x2 #define SNMP_MSG_REPORT_FLAG 0x4 -#define SNMP_SECMODEL_USM 3 +#define SNMP_MPM_SNMP_V1 0 +#define SNMP_MPM_SNMP_V2c 1 +#define SNMP_MPM_SNMP_V3 3 struct snmp_pdu { char community[SNMP_COMMUNITY_MAXLEN + 1]; @@ -296,7 +307,17 @@ and is the type of the PDU. .Fa security_model is the security model used for SNMPv3 PDUs. The only supported -value currently is 3 (User-based Security Model). +value currently is 3 (User-based Security Model). Additional values for any, +unknown, SNMPv1 and SNMPv2c security models are also enumerated +.Bd -literal -offset indent +enum snmp_secmodel { + SNMP_SECMODEL_ANY = 0, + SNMP_SECMODEL_SNMPv1 = 1, + SNMP_SECMODEL_SNMPv2c = 2, + SNMP_SECMODEL_USM = 3, + SNMP_SECMODEL_UNKNOWN +}; +.Ed .Pp The function .Fn snmp_value_free @@ -366,6 +387,13 @@ if the PDU is encrypted, decrypts the PD If successfull, a plain text scoped PDU is stored in the buffer. .Pp The function +.Fn snmp_pdu_init_secparams +calculates the initialization vector for the privacy protocol in use before +the PDU pointed to by +.Fa pdu +may be encrypted or decrypted. +.Pp +The function .Fn snmp_pdu_dump dumps the PDU in a human readable form by calling .Fn snmp_printf . Modified: head/contrib/bsnmp/lib/snmp.c ============================================================================== --- head/contrib/bsnmp/lib/snmp.c Mon Dec 20 17:08:22 2010 (r216593) +++ head/contrib/bsnmp/lib/snmp.c Mon Dec 20 17:13:14 2010 (r216594) @@ -764,6 +764,7 @@ snmp_pdu_encode_header(struct asn_buf *b if (pdu->type != SNMP_PDU_RESPONSE && pdu->type != SNMP_PDU_TRAP && + pdu->type != SNMP_PDU_TRAP2 && pdu->type != SNMP_PDU_REPORT) pdu->flags |= SNMP_MSG_REPORT_FLAG; @@ -1176,23 +1177,19 @@ snmp_value_copy(struct snmp_value *to, c } void -snmp_pdu_init_secparams(struct snmp_pdu *pdu, struct snmp_engine *eng, - struct snmp_user *user) +snmp_pdu_init_secparams(struct snmp_pdu *pdu) { int32_t rval; - memcpy(&pdu->engine, eng, sizeof(pdu->engine)); - memcpy(&pdu->user, user, sizeof(pdu->user)); - - if (user->auth_proto != SNMP_AUTH_NOAUTH) + if (pdu->user.auth_proto != SNMP_AUTH_NOAUTH) pdu->flags |= SNMP_MSG_AUTH_FLAG; - switch (user->priv_proto) { + switch (pdu->user.priv_proto) { case SNMP_PRIV_DES: - memcpy(pdu->msg_salt, &eng->engine_boots, - sizeof(eng->engine_boots)); + memcpy(pdu->msg_salt, &pdu->engine.engine_boots, + sizeof(pdu->engine.engine_boots)); rval = random(); - memcpy(pdu->msg_salt + sizeof(eng->engine_boots), &rval, + memcpy(pdu->msg_salt + sizeof(pdu->engine.engine_boots), &rval, sizeof(int32_t)); pdu->flags |= SNMP_MSG_PRIV_FLAG; break; Modified: head/contrib/bsnmp/lib/snmp.h ============================================================================== --- head/contrib/bsnmp/lib/snmp.h Mon Dec 20 17:08:22 2010 (r216593) +++ head/contrib/bsnmp/lib/snmp.h Mon Dec 20 17:13:14 2010 (r216594) @@ -89,6 +89,10 @@ enum snmp_version { SNMP_V3, }; +#define SNMP_MPM_SNMP_V1 0 +#define SNMP_MPM_SNMP_V2c 1 +#define SNMP_MPM_SNMP_V3 3 + #define SNMP_ADM_STR32_SIZ (32 + 1) #define SNMP_AUTH_KEY_SIZ 40 #define SNMP_PRIV_KEY_SIZ 32 @@ -255,6 +259,7 @@ int snmp_value_parse(const char *, enum int snmp_value_copy(struct snmp_value *, const struct snmp_value *); void snmp_pdu_free(struct snmp_pdu *); +void snmp_pdu_init_secparams(struct snmp_pdu *); enum snmp_code snmp_pdu_decode(struct asn_buf *b, struct snmp_pdu *pdu, int32_t *); enum snmp_code snmp_pdu_decode_header(struct asn_buf *, struct snmp_pdu *); enum snmp_code snmp_pdu_decode_scoped(struct asn_buf *, struct snmp_pdu *, int32_t *); Modified: head/contrib/bsnmp/lib/snmpagent.c ============================================================================== --- head/contrib/bsnmp/lib/snmpagent.c Mon Dec 20 17:08:22 2010 (r216593) +++ head/contrib/bsnmp/lib/snmpagent.c Mon Dec 20 17:13:14 2010 (r216594) @@ -178,7 +178,9 @@ snmp_pdu_create_response(struct snmp_pdu if (resp->version != SNMP_V3) return; - snmp_pdu_init_secparams(resp, &pdu->engine, &pdu->user); + memcpy(&resp->engine, &pdu->engine, sizeof(pdu->engine)); + memcpy(&resp->user, &pdu->user, sizeof(pdu->user)); + snmp_pdu_init_secparams(resp); resp->identifier = pdu->identifier; resp->security_model = pdu->security_model; resp->context_engine_len = pdu->context_engine_len; Modified: head/contrib/bsnmp/lib/snmpclient.c ============================================================================== --- head/contrib/bsnmp/lib/snmpclient.c Mon Dec 20 17:08:22 2010 (r216593) +++ head/contrib/bsnmp/lib/snmpclient.c Mon Dec 20 17:13:14 2010 (r216594) @@ -1160,10 +1160,11 @@ snmp_pdu_create(struct snmp_pdu *pdu, u_ pdu->flags = 0; pdu->security_model = snmp_client.security_model; - if (snmp_client.security_model == SNMP_SECMODEL_USM) - snmp_pdu_init_secparams(pdu, &snmp_client.engine, - &snmp_client.user); - else + if (snmp_client.security_model == SNMP_SECMODEL_USM) { + memcpy(&pdu->engine, &snmp_client.engine, sizeof(pdu->engine)); + memcpy(&pdu->user, &snmp_client.user, sizeof(pdu->user)); + snmp_pdu_init_secparams(pdu); + } else seterr(&snmp_client, "unknown security model"); if (snmp_client.clen > 0) { @@ -1440,9 +1441,11 @@ snmp_receive_packet(struct snmp_pdu *pdu abuf.asn_len = ret; memset(pdu, 0, sizeof(*pdu)); - if (snmp_client.security_model == SNMP_SECMODEL_USM) - snmp_pdu_init_secparams(pdu, &snmp_client.engine, - &snmp_client.user); + if (snmp_client.security_model == SNMP_SECMODEL_USM) { + memcpy(&pdu->engine, &snmp_client.engine, sizeof(pdu->engine)); + memcpy(&pdu->user, &snmp_client.user, sizeof(pdu->user)); + snmp_pdu_init_secparams(pdu); + } if (SNMP_CODE_OK != (ret = snmp_pdu_decode(&abuf, pdu, &ip))) { seterr(&snmp_client, "snmp_decode_pdu: failed %d", ret); Modified: head/contrib/bsnmp/lib/snmppriv.h ============================================================================== --- head/contrib/bsnmp/lib/snmppriv.h Mon Dec 20 17:08:22 2010 (r216593) +++ head/contrib/bsnmp/lib/snmppriv.h Mon Dec 20 17:13:14 2010 (r216594) @@ -38,9 +38,6 @@ enum snmp_code snmp_fix_encoding(struct enum asn_err snmp_parse_pdus_hdr(struct asn_buf *b, struct snmp_pdu *pdu, asn_len_t *lenp); -void snmp_pdu_init_secparams(struct snmp_pdu *, struct snmp_engine *, - struct snmp_user *); - enum snmp_code snmp_pdu_calc_digest(const struct snmp_pdu *, uint8_t *); enum snmp_code snmp_pdu_encrypt(const struct snmp_pdu *); enum snmp_code snmp_pdu_decrypt(const struct snmp_pdu *); Added: head/contrib/bsnmp/lib/tc.def ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/contrib/bsnmp/lib/tc.def Mon Dec 20 17:13:14 2010 (r216594) @@ -0,0 +1,40 @@ +#- +# Copyright (C) 2010 The FreeBSD Foundation +# All rights reserved. +# +# This software was developed by Shteryana Sotirova Shopova under +# sponsorship from the FreeBSD Foundation. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ +# + +typedef RowStatus ENUM ( + 1 active + 2 notInService + 3 notReady + 4 createAndGo + 5 createAndWait + 6 destroy +) + Added: head/contrib/bsnmp/snmp_target/snmp_target.3 ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/contrib/bsnmp/snmp_target/snmp_target.3 Mon Dec 20 17:13:14 2010 (r216594) @@ -0,0 +1,204 @@ +.\"- +.\" Copyright (C) 2010 The FreeBSD Foundation +.\" All rights reserved. +.\" +.\" This documentation was written by Shteryana Sotirova Shopova under +.\" sponsorship from the FreeBSD Foundation. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd December 16, 2010 +.Dt SNMP_TARGET 3 +.Os +.Sh NAME +.Nm snmp_target +.Nd "Target addresses and notifications module for +.Xr bsnmpd 1 +.Sh LIBRARY +.Pq begemotSnmpdModulePath."target" = "/usr/lib/snmp_target.so" +.Sh DESCRIPTION +The +.Nm snmp_target +module implements SNMPv3 Management Target MIB and basic functionality from +Notification MIB as defined in RFC 3413. The module is used to manage the +internal list of SNMPv3 notification target addresses in +.Nm bsnmpd +and their associated transport and encapsulation parameters. +The module must be loaded for +.Nm bsnmpd +to send SNMPv3 Trap-PDUs to the configured notification target addresses. +.Sh IMPLEMENTATION NOTES +A short description of the objects implemented in the module follows. +.Bl -tag -width "XXXXXXXXX" +.It Va snmpTargetSpinLock +An advisory lock used to coordinate several Command Generator Applications when +altering the SNMP Target addresses and their associated parameters. +.It Va snmpTargetAddrTable +The table contains the transport addresses to be used in generation of SNMP +messages. +The table contains the following objects +.Bl -tag -width ".It Va snmpTargetAddrName" +.It Va snmpTargetAddrName +A unique local identifier used as entry key. Not accessible for GET or SET +operations. +.It Va snmpTargetAddrTDomain +The transport domain of the target address. Currently only UDP over IPv4 is +supported and any attempt to SET the value of this object will return an +"inconsistentValue" error. Additional transport domains will be supported +in future via the object definitions in TRANSPORT-ADDRESS-MIB (RFC 3419). +.It Va snmpTargetAddrTAddress +The transport address of this entry interpreted within the context of the value +of +.Va snmpTargetAddrTDomain . +For UDP over IPv4, this is a 6-byte long octetstring, with the first 4 bytes +representing the IPv4 address and the last 2 bytes the UDP port number in +network-byte order. +.It Va snmpTargetAddrTimeout +The value of this object is only relevant when the receiver of the SNMP +message is to send an acknowledgment that the message was received, i.e +for SNMP notifications it is relevant if the notification is SNMP Inform +rather than SNMP Trap. Currently +.Nm bsnmpd +supports only SNMP Trap notifications, so the value of this object is +meaningless. +.It Va snmpTargetAddrRetryCount +As with +.Va snmpTargetAddrTimeout +the value of this object currently is meaningless. +.It Va snmpTargetAddrTagList +A list of human-readable tag values used to select target addresses for a +particular operation. Recognized ASCII delimiting characters between tags are +space (0x20), tab (0x20), carriage return (0xOD) and line feed (0x0A). +.It Va snmpTargetAddrParams +The value of this object contains the value of a key in snmpTargetParamsTable +containing SNMP parameters used when generating messages to this transport +address. +.It Va snmpTargetAddrStorageType +This column always has either of two values. Entries created via +.Nm bsnmpd's +configuration file always have this column set to readOnly (5) and +it is not possible to modify those entries. Entries created by Command Generator +Applications always have this column set to volatile(2) and such entries are +lost when the module is restarted. A SET operation on this column is not +allowed. +.It Va snmpTargetAddrRowStatus +This column is used to create new target address entries or delete existing ones +from the table. +.El +.It Va snmpTargetParamsTable +The table contains the target information to be used in generation of SNMP +messages. +The table contains the following objects +.Bl -tag -width ".It Va snmpTargetParamsName" +.It Va snmpTargetParamsName +A unique local identifier used as entry key. Not accessible for GET or SET +operations. +.It Va snmpTargetParamsMPModel +The Message Processing Model to be used when generating SNMP PDUs using this +entry. Supported values are 0 for SNMPv1, 1 for SNMPv2c and 3 for SNMPv3. +.It Va snmpTargetParamsSecurityModel +The Security Model to be used when generating SNMP PDUs using this entry. +Supported values are 1 for SNMPv1, 2 for SNMPv2c and 3 for SNMPv3 User-Based +Security Model. +.It Va snmpTargetParamsSecurityName +The securityName which identifies the Principal on whose behalf SNMP PDUs +will be generated using this entry. For SNMPv1 and SNMPv2c this is the +name of a community configured in +.Nm bsnmpd , +and for SNMPv3 USM, this is the name of an existing user configured via the +.Nm snmp_usm +module. +.It Va snmpTargetParamsSecurityLevel +The Security Level to be used when generating SNMP PDUs using this entry. +Supported values are noAuthNoPriv(1) for plain-text PDUs with no authentication, +authNoPriv(2) for authenticated plain-text PDUs and authPriv(3) for encrypted +PDUs. +.It Va snmpTargetParamsStorageType +As with +.Va snmpTargetAddrStorageType +this column always has either of two values. Entries created via +.Nm bsnmpd's +configuration file always have this column set to readOnly (5), while entries +created by Command Generator Applications always have this column set to +volatile(2). A SET operation on this column is not allowed. +.It Va snmpTargetParamsRowStatus +This column is used to create new target address parameters entries or delete +existing ones from the table. +.El +.It Va snmpNotifyTable +The table is used to select the management targets which should receive SNMP +notifications. +The table contains the following objects +.Bl -tag -width ".It Va snmpNotifyName" +.It Va snmpNotifyName +A unique local identifier used as entry key. Not accessible for GET or SET +operations. +.It Va snmpNotifyTag +This object contains a single tag value used to select target addresses from +the +.Va snmpTargetAddrTable +to which the notifications will be send. +.It Va snmpNotifyType +The type of SNMP notifications that will be send to the target addresses +matching the corresponding +.Va snmpNotifyTag . +Possible values are Trap (1) or Inform (2). Currently only SNMP Traps are +supported and any attempt to SET the value of this object will return an +"inconsistentValue" error. +.It Va snmpNotifyStorageType +Again this column always has either of two values. Entries created via +.Nm bsnmpd's +configuration file always have this column set to readOnly (5), while entries +created by Command Generator Applications always have this column set to +volatile(2). A SET operation on this column is not allowed. +.It Va snmpNotifyRowStatus +This column is used to create new notification target entries or delete existing +ones from the table. +.El +.El +.Pp +The +.Va snmpNotifyFilterProfileTable +and +.Va snmpNotifyFilterTable +tables from the SNMP-NOTIFICATION-MIB are not supported by the module. +Notification filtering is supported via the +.Xr snmp_vacm 3 +module instead. +.Sh FILES +.Bl -tag -width "XXXXXXXXX" +.It Pa /usr/share/snmp/defs/target_tree.def +The description of the MIB tree implemented by +.Nm . +.El +.Sh SEE ALSO +.Xr bsnmpd 1 , +.Xr gensnmptree 1 , +.Xr snmpmod 3 , +.Xr snmp_usm 3 , +.Xr snmp_vacm 3 +.Sh STANDARDS +IETF RFC 3413 +.Sh AUTHORS +.An Shteryana Shopova Aq syrinx@FreeBSD.org Added: head/contrib/bsnmp/snmp_target/target_snmp.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/contrib/bsnmp/snmp_target/target_snmp.c Mon Dec 20 17:13:14 2010 (r216594) @@ -0,0 +1,837 @@ +/*- + * Copyright (c) 2010 The FreeBSD Foundation + * All rights reserved. + * + * This software was developed by Shteryana Sotirova Shopova under + * sponsorship from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ +#include <sys/queue.h> +#include <sys/types.h> + +#include <errno.h> +#include <stdarg.h> +#include <stdlib.h> +#include <stdio.h> +#include <stdint.h> +#include <string.h> +#include <syslog.h> + +#include "asn1.h" +#include "snmp.h" +#include "snmpmod.h" + +#include "target_tree.h" +#include "target_oid.h" + +static struct lmodule *target_module; +/* For the registration. */ +static const struct asn_oid oid_target = OIDX_snmpTargetMIB; +static const struct asn_oid oid_notification = OIDX_snmpNotificationMIB; + +static uint reg_target; +static uint reg_notification; + +static int32_t target_lock; + +static const struct asn_oid oid_udp_domain = OIDX_snmpUDPDomain; + +/* + * Internal datastructures and forward declarations. + */ +static void target_append_index(struct asn_oid *, uint, + const char *); +static int target_decode_index(const struct asn_oid *, uint, + char *); +static struct target_address *target_get_address(const struct asn_oid *, + uint); +static struct target_address *target_get_next_address(const struct asn_oid *, + uint); +static struct target_param *target_get_param(const struct asn_oid *, + uint); +static struct target_param *target_get_next_param(const struct asn_oid *, + uint); +static struct target_notify *target_get_notify(const struct asn_oid *, + uint); +static struct target_notify *target_get_next_notify(const struct asn_oid *, + uint); + +int +op_snmp_target(struct snmp_context *ctx __unused, struct snmp_value *val, + uint32_t sub, uint32_t iidx __unused, enum snmp_op op) +{ + struct snmpd_target_stats *ctx_stats; + + if (val->var.subs[sub - 1] == LEAF_snmpTargetSpinLock) { + switch (op) { + case SNMP_OP_GET: + if (++target_lock == INT32_MAX) + target_lock = 0; + val->v.integer = target_lock; + break; + case SNMP_OP_GETNEXT: + abort(); + case SNMP_OP_SET: + if (val->v.integer != target_lock) + return (SNMP_ERR_INCONS_VALUE); + break; + case SNMP_OP_ROLLBACK: + /* FALLTHROUGH */ + case SNMP_OP_COMMIT: + break; + } + return (SNMP_ERR_NOERROR); + } else if (op == SNMP_OP_SET) + return (SNMP_ERR_NOT_WRITEABLE); + + if ((ctx_stats = bsnmpd_get_target_stats()) == NULL) + return (SNMP_ERR_GENERR); + + if (op == SNMP_OP_GET) { + switch (val->var.subs[sub - 1]) { + case LEAF_snmpUnavailableContexts: + val->v.uint32 = ctx_stats->unavail_contexts; + break; + case LEAF_snmpUnknownContexts: + val->v.uint32 = ctx_stats->unknown_contexts; + break; + default: + return (SNMP_ERR_NOSUCHNAME); + } + return (SNMP_ERR_NOERROR); + } + abort(); +} + +int +op_snmp_target_addrs(struct snmp_context *ctx __unused, struct snmp_value *val, + uint32_t sub, uint32_t iidx __unused, enum snmp_op op) +{ + char aname[SNMP_ADM_STR32_SIZ]; + struct target_address *addrs; + + switch (op) { + case SNMP_OP_GET: + if ((addrs = target_get_address(&val->var, sub)) == NULL) + return (SNMP_ERR_NOSUCHNAME); + break; + + case SNMP_OP_GETNEXT: + if ((addrs = target_get_next_address(&val->var, sub)) == NULL) + return (SNMP_ERR_NOSUCHNAME); + target_append_index(&val->var, sub, addrs->name); + break; + + case SNMP_OP_SET: + if ((addrs = target_get_address(&val->var, sub)) == NULL && + (val->var.subs[sub - 1] != LEAF_snmpTargetAddrRowStatus || + val->v.integer != RowStatus_createAndWait)) + return (SNMP_ERR_NOSUCHNAME); + + if (addrs != NULL) { + if (community != COMM_INITIALIZE && + addrs->type == StorageType_readOnly) + return (SNMP_ERR_NOT_WRITEABLE); + if (addrs->status == RowStatus_active && + val->v.integer != RowStatus_destroy) + return (SNMP_ERR_INCONS_VALUE); + } + + switch (val->var.subs[sub - 1]) { + case LEAF_snmpTargetAddrTDomain: + return (SNMP_ERR_INCONS_VALUE); + case LEAF_snmpTargetAddrTAddress: + if (val->v.octetstring.len != SNMP_UDP_ADDR_SIZ) + return (SNMP_ERR_INCONS_VALUE); + ctx->scratch->ptr1 = malloc(SNMP_UDP_ADDR_SIZ); + if (ctx->scratch->ptr1 == NULL) + return (SNMP_ERR_GENERR); + memcpy(ctx->scratch->ptr1, addrs->address, + SNMP_UDP_ADDR_SIZ); + memcpy(addrs->address, val->v.octetstring.octets, + SNMP_UDP_ADDR_SIZ); + break; + + case LEAF_snmpTargetAddrTagList: + if (val->v.octetstring.len >= SNMP_TAG_SIZ) + return (SNMP_ERR_INCONS_VALUE); + ctx->scratch->int1 = strlen(addrs->taglist) + 1; + ctx->scratch->ptr1 = malloc(ctx->scratch->int1); + if (ctx->scratch->ptr1 == NULL) + return (SNMP_ERR_GENERR); + strlcpy(ctx->scratch->ptr1, addrs->taglist, + ctx->scratch->int1); + memcpy(addrs->taglist, val->v.octetstring.octets, + val->v.octetstring.len); + addrs->taglist[val->v.octetstring.len] = '\0'; + break; + + case LEAF_snmpTargetAddrParams: + if (val->v.octetstring.len >= SNMP_ADM_STR32_SIZ) + return (SNMP_ERR_INCONS_VALUE); + ctx->scratch->int1 = strlen(addrs->paramname) + 1; + ctx->scratch->ptr1 = malloc(ctx->scratch->int1); + if (ctx->scratch->ptr1 == NULL) + return (SNMP_ERR_GENERR); + strlcpy(ctx->scratch->ptr1, addrs->paramname, + ctx->scratch->int1); + memcpy(addrs->paramname, val->v.octetstring.octets, + val->v.octetstring.len); + addrs->paramname[val->v.octetstring.len] = '\0'; + break; + + case LEAF_snmpTargetAddrRetryCount: + ctx->scratch->int1 = addrs->retry; + addrs->retry = val->v.integer; + break; + + case LEAF_snmpTargetAddrTimeout: + ctx->scratch->int1 = addrs->timeout; + addrs->timeout = val->v.integer / 10; + break; + + case LEAF_snmpTargetAddrStorageType: + return (SNMP_ERR_INCONS_VALUE); + + case LEAF_snmpTargetAddrRowStatus: + if (addrs != NULL) { + if (val->v.integer != RowStatus_active && + val->v.integer != RowStatus_destroy) + return (SNMP_ERR_INCONS_VALUE); + if (val->v.integer == RowStatus_active && + (addrs->address[0] == 0 || + strlen(addrs->taglist) == 0 || + strlen(addrs->paramname) == 0)) + return (SNMP_ERR_INCONS_VALUE); + ctx->scratch->int1 = addrs->status; + addrs->status = val->v.integer; + return (SNMP_ERR_NOERROR); + } + if (val->v.integer != RowStatus_createAndWait || + target_decode_index(&val->var, sub, aname) < 0) + return (SNMP_ERR_INCONS_VALUE); + if ((addrs = target_new_address(aname)) == NULL) + return (SNMP_ERR_GENERR); + addrs->status = RowStatus_destroy; + if (community != COMM_INITIALIZE) + addrs->type = StorageType_volatile; + else + addrs->type = StorageType_readOnly; + break; + } + return (SNMP_ERR_NOERROR); + + case SNMP_OP_COMMIT: + switch (val->var.subs[sub - 1]) { + case LEAF_snmpTargetAddrTAddress: + case LEAF_snmpTargetAddrTagList: + case LEAF_snmpTargetAddrParams: + free(ctx->scratch->ptr1); + break; + case LEAF_snmpTargetAddrRowStatus: + if ((addrs = target_get_address(&val->var, sub)) == NULL) + return (SNMP_ERR_GENERR); + if (val->v.integer == RowStatus_destroy) + return (target_delete_address(addrs)); + else if (val->v.integer == RowStatus_active) + return (target_activate_address(addrs)); + break; + default: + break; + } + return (SNMP_ERR_NOERROR); + + case SNMP_OP_ROLLBACK: + if ((addrs = target_get_address(&val->var, sub)) == NULL) + return (SNMP_ERR_GENERR); + + switch (val->var.subs[sub - 1]) { + case LEAF_snmpTargetAddrTAddress: + memcpy(addrs->address, ctx->scratch->ptr1, + SNMP_UDP_ADDR_SIZ); + free(ctx->scratch->ptr1); + break; + + case LEAF_snmpTargetAddrTagList: + strlcpy(addrs->taglist, ctx->scratch->ptr1, + ctx->scratch->int1); + free(ctx->scratch->ptr1); + break; + + case LEAF_snmpTargetAddrParams: + strlcpy(addrs->paramname, ctx->scratch->ptr1, + ctx->scratch->int1); + free(ctx->scratch->ptr1); + break; + + case LEAF_snmpTargetAddrRetryCount: + addrs->retry = ctx->scratch->int1; + break; + + case LEAF_snmpTargetAddrTimeout: + addrs->timeout = ctx->scratch->int1; + break; + + case LEAF_snmpTargetAddrRowStatus: + if (ctx->scratch->int1 == RowStatus_destroy) + return (target_delete_address(addrs)); + break; + default: + break; + } + + default: + abort(); + } + + switch (val->var.subs[sub - 1]) { + case LEAF_snmpTargetAddrTDomain: + return (oid_get(val, &oid_udp_domain)); + case LEAF_snmpTargetAddrTAddress: + return (string_get(val, addrs->address, SNMP_UDP_ADDR_SIZ)); + case LEAF_snmpTargetAddrTimeout: + val->v.integer = addrs->timeout; + break; + case LEAF_snmpTargetAddrRetryCount: + val->v.integer = addrs->retry; + break; + case LEAF_snmpTargetAddrTagList: + return (string_get(val, addrs->taglist, -1)); + case LEAF_snmpTargetAddrParams: + return (string_get(val, addrs->paramname, -1)); + case LEAF_snmpTargetAddrStorageType: + val->v.integer = addrs->type; + break; + case LEAF_snmpTargetAddrRowStatus: + val->v.integer = addrs->status; + break; + default: + abort(); + } + + return (SNMP_ERR_NOERROR); +} + +int +op_snmp_target_params(struct snmp_context *ctx __unused, struct snmp_value *val, + uint32_t sub, uint32_t iidx __unused, enum snmp_op op) +{ + char pname[SNMP_ADM_STR32_SIZ]; + struct target_param *param; + + switch (op) { + case SNMP_OP_GET: + if ((param = target_get_param(&val->var, sub)) == NULL) + return (SNMP_ERR_NOSUCHNAME); + break; + + case SNMP_OP_GETNEXT: + if ((param = target_get_next_param(&val->var, sub)) == NULL) + return (SNMP_ERR_NOSUCHNAME); + target_append_index(&val->var, sub, param->name); + break; + + case SNMP_OP_SET: + if ((param = target_get_param(&val->var, sub)) == NULL && + (val->var.subs[sub - 1] != LEAF_snmpTargetParamsRowStatus || + val->v.integer != RowStatus_createAndWait)) + return (SNMP_ERR_NOSUCHNAME); + + if (param != NULL) { + if (community != COMM_INITIALIZE && + param->type == StorageType_readOnly) + return (SNMP_ERR_NOT_WRITEABLE); + if (param->status == RowStatus_active && + val->v.integer != RowStatus_destroy) + return (SNMP_ERR_INCONS_VALUE); + } + + switch (val->var.subs[sub - 1]) { + case LEAF_snmpTargetParamsMPModel: + if (val->v.integer != SNMP_MPM_SNMP_V1 && + val->v.integer != SNMP_MPM_SNMP_V2c && + val->v.integer != SNMP_MPM_SNMP_V3) + return (SNMP_ERR_INCONS_VALUE); + ctx->scratch->int1 = param->mpmodel; + param->mpmodel = val->v.integer; + break; + + case LEAF_snmpTargetParamsSecurityModel: + if (val->v.integer != SNMP_SECMODEL_SNMPv1 && + val->v.integer != SNMP_SECMODEL_SNMPv2c && + val->v.integer != SNMP_SECMODEL_USM) + return (SNMP_ERR_INCONS_VALUE); + ctx->scratch->int1 = param->sec_model; + param->sec_model = val->v.integer; + break; + + case LEAF_snmpTargetParamsSecurityName: + if (val->v.octetstring.len >= SNMP_ADM_STR32_SIZ) + return (SNMP_ERR_INCONS_VALUE); + ctx->scratch->int1 = strlen(param->secname) + 1; + ctx->scratch->ptr1 = malloc(ctx->scratch->int1); + if (ctx->scratch->ptr1 == NULL) + return (SNMP_ERR_GENERR); + strlcpy(ctx->scratch->ptr1, param->secname, + ctx->scratch->int1); + memcpy(param->secname, val->v.octetstring.octets, + val->v.octetstring.len); + param->secname[val->v.octetstring.len] = '\0'; + break; + + case LEAF_snmpTargetParamsSecurityLevel: + if (val->v.integer != SNMP_noAuthNoPriv && + val->v.integer != SNMP_authNoPriv && + val->v.integer != SNMP_authPriv) + return (SNMP_ERR_INCONS_VALUE); + ctx->scratch->int1 = param->sec_level; + param->sec_level = val->v.integer; + break; + + case LEAF_snmpTargetParamsStorageType: + return (SNMP_ERR_INCONS_VALUE); + + case LEAF_snmpTargetParamsRowStatus: + if (param != NULL) { + if (val->v.integer != RowStatus_active && + val->v.integer != RowStatus_destroy) + return (SNMP_ERR_INCONS_VALUE); + if (val->v.integer == RowStatus_active && + (param->sec_model == 0 || + param->sec_level == 0 || + strlen(param->secname) == 0)) + return (SNMP_ERR_INCONS_VALUE); + ctx->scratch->int1 = param->status; + param->status = val->v.integer; + return (SNMP_ERR_NOERROR); + } + if (val->v.integer != RowStatus_createAndWait || + target_decode_index(&val->var, sub, pname) < 0) + return (SNMP_ERR_INCONS_VALUE); + if ((param = target_new_param(pname)) == NULL) + return (SNMP_ERR_GENERR); + param->status = RowStatus_destroy; + if (community != COMM_INITIALIZE) + param->type = StorageType_volatile; + else + param->type = StorageType_readOnly; + break; + } + return (SNMP_ERR_NOERROR); + + case SNMP_OP_COMMIT: + switch (val->var.subs[sub - 1]) { + case LEAF_snmpTargetParamsSecurityName: + free(ctx->scratch->ptr1); + break; + case LEAF_snmpTargetParamsRowStatus: + if ((param = target_get_param(&val->var, sub)) == NULL) + return (SNMP_ERR_GENERR); + if (val->v.integer == RowStatus_destroy) + return (target_delete_param(param)); + break; + default: + break; + } + return (SNMP_ERR_NOERROR); + + case SNMP_OP_ROLLBACK: + if ((param = target_get_param(&val->var, sub)) == NULL && + (val->var.subs[sub - 1] != LEAF_snmpTargetParamsRowStatus || + val->v.integer != RowStatus_createAndWait)) + return (SNMP_ERR_GENERR); + switch (val->var.subs[sub - 1]) { + case LEAF_snmpTargetParamsMPModel: + param->mpmodel = ctx->scratch->int1; + break; + case LEAF_snmpTargetParamsSecurityModel: + param->sec_model = ctx->scratch->int1; + break; + case LEAF_snmpTargetParamsSecurityName: + strlcpy(param->secname, ctx->scratch->ptr1, + sizeof(param->secname)); + free(ctx->scratch->ptr1); + break; + case LEAF_snmpTargetParamsSecurityLevel: + param->sec_level = ctx->scratch->int1; + break; + case LEAF_snmpTargetParamsRowStatus: + if (ctx->scratch->int1 == RowStatus_destroy) + return (target_delete_param(param)); + break; + default: + break; + } + + return (SNMP_ERR_NOERROR); + + default: + abort(); + } + + switch (val->var.subs[sub - 1]) { + case LEAF_snmpTargetParamsMPModel: + val->v.integer = param->mpmodel; + break; + case LEAF_snmpTargetParamsSecurityModel: + val->v.integer = param->sec_model; + break; + case LEAF_snmpTargetParamsSecurityName: + return (string_get(val, param->secname, -1)); + case LEAF_snmpTargetParamsSecurityLevel: + val->v.integer = param->sec_level; + break; + case LEAF_snmpTargetParamsStorageType: + val->v.integer = param->type; + break; + case LEAF_snmpTargetParamsRowStatus: + val->v.integer = param->status; + break; + default: + abort(); + } + + return (SNMP_ERR_NOERROR); +} + +int +op_snmp_notify(struct snmp_context *ctx __unused, struct snmp_value *val, + uint32_t sub, uint32_t iidx __unused, enum snmp_op op) +{ + char nname[SNMP_ADM_STR32_SIZ]; + struct target_notify *notify; + + switch (op) { + case SNMP_OP_GET: + if ((notify = target_get_notify(&val->var, sub)) == NULL) + return (SNMP_ERR_NOSUCHNAME); + break; + + case SNMP_OP_GETNEXT: + if ((notify = target_get_next_notify(&val->var, sub)) == NULL) + return (SNMP_ERR_NOSUCHNAME); + target_append_index(&val->var, sub, notify->name); *** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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