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dnsserver.h - typedefs and prototypes dnsserver.c - RPC API and implementation methods dnsdb.c - samdb operations dnsdata.c - functions to manipulate dns structures dnsutils.c - function for serverinfo and zoneinfo structures Signed-off-by: Andrew Tridgell <tridge@samba.org>
310 lines
9.7 KiB
C
310 lines
9.7 KiB
C
/*
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Unix SMB/CIFS implementation.
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DNS Server
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Copyright (C) Amitay Isaacs 2011
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "dnsserver.h"
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#include "rpc_server/common/common.h"
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#include "dsdb/samdb/samdb.h"
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#include "lib/socket/netif.h"
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struct dnsserver_serverinfo *dnsserver_init_serverinfo(TALLOC_CTX *mem_ctx,
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struct loadparm_context *lp_ctx,
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struct ldb_context *samdb)
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{
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struct dnsserver_serverinfo *serverinfo;
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struct dcerpc_server_info *dinfo;
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struct ldb_dn *domain_dn, *forest_dn;
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struct interface *ifaces;
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int num_interfaces, i;
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serverinfo = talloc_zero(mem_ctx, struct dnsserver_serverinfo);
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if (serverinfo == NULL) {
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return NULL;
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}
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dinfo = lpcfg_dcerpc_server_info(mem_ctx, lp_ctx);
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if (dinfo) {
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serverinfo->dwVersion = (dinfo->version_build & 0x0000FFFF) << 16 |
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(dinfo->version_minor & 0x000000FF) << 8 |
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(dinfo->version_major & 0x000000FF);
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talloc_free(dinfo);
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} else {
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serverinfo->dwVersion = 0x0ECE0205; /* build, os_minor, os_major */;
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}
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serverinfo->fBootMethod = DNS_BOOT_METHOD_DIRECTORY;
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serverinfo->fAdminConfigured = 0;
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serverinfo->fAllowUpdate = 1;
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serverinfo->fDsAvailable = 1;
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serverinfo->pszServerName = talloc_asprintf(mem_ctx, "%s.%s",
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lpcfg_netbios_name(lp_ctx),
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lpcfg_dnsdomain(lp_ctx));
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domain_dn = ldb_get_default_basedn(samdb);
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forest_dn = ldb_get_root_basedn(samdb);
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serverinfo->pszDsContainer = talloc_asprintf(mem_ctx,
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"CN=MicrosoftDNS,DC=DomainDnsZones,%s",
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ldb_dn_get_linearized(domain_dn));
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serverinfo->dwDsForestVersion = dsdb_forest_functional_level(samdb);
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serverinfo->dwDsDomainVersion = dsdb_functional_level(samdb);
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serverinfo->dwDsDsaVersion = 4; /* need to do ldb search here */
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serverinfo->pszDomainName = samdb_dn_to_dns_domain(mem_ctx, domain_dn);
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serverinfo->pszForestName = samdb_dn_to_dns_domain(mem_ctx, forest_dn);
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serverinfo->pszDomainDirectoryPartition = talloc_asprintf(mem_ctx,
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"DC=DomainDnsZones,%s",
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ldb_dn_get_linearized(domain_dn));
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serverinfo->pszForestDirectoryPartition = talloc_asprintf(mem_ctx,
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"DC=ForestDnsZones,%s",
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ldb_dn_get_linearized(forest_dn));
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load_interface_list(mem_ctx, lp_ctx, &ifaces);
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num_interfaces = iface_list_count(ifaces);
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serverinfo->aipServerAddrs = talloc_zero(mem_ctx, struct IP4_ARRAY);
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if (serverinfo->aipServerAddrs) {
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serverinfo->aipServerAddrs->AddrCount = num_interfaces;
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if (num_interfaces > 0) {
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serverinfo->aipServerAddrs->AddrArray = talloc_zero_array(mem_ctx,
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unsigned int,
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num_interfaces);
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if (serverinfo->aipServerAddrs->AddrArray) {
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for (i=0; i<num_interfaces; i++) {
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serverinfo->aipServerAddrs->AddrArray[i] = inet_addr(iface_list_n_ip(ifaces, i));
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}
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} else {
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serverinfo->aipServerAddrs->AddrCount = 0;
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}
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}
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}
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talloc_free(ifaces);
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/* Assume listen addresses are same as server addresses */
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serverinfo->aipListenAddrs = serverinfo->aipServerAddrs;
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serverinfo->aipForwarders = NULL;
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serverinfo->aipLogFilter = NULL;
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serverinfo->pwszLogFilePath = NULL;
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serverinfo->dwLogLevel = 0;
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serverinfo->dwDebugLevel = 0;
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serverinfo->dwEventLogLevel = DNS_EVENT_LOG_INFORMATION_TYPE;
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serverinfo->dwLogFileMaxSize = 0;
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serverinfo->dwForwardTimeout = 3; /* seconds (default) */
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serverinfo->dwRpcProtocol = 5;
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serverinfo->dwNameCheckFlag = DNS_ALLOW_MULTIBYTE_NAMES;
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serverinfo->cAddressAnswerLimit = 0;
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serverinfo->dwRecursionRetry = 3 /* seconds (default) */;
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serverinfo->dwRecursionTimeout = 8 /* seconds (default) */;
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serverinfo->dwMaxCacheTtl = 0x00015180; /* 1 day (default) */;
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serverinfo->dwDsPollingInterval = 0xB4; /* 3 minutes (default) */;
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serverinfo->dwLocalNetPriorityNetMask = 0x000000FF;;
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serverinfo->dwScavengingInterval = 0;
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serverinfo->dwDefaultRefreshInterval = 0xA8; /* 7 days in hours */;
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serverinfo->dwDefaultNoRefreshInterval = 0xA8; /* 7 days in hours */;;
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serverinfo->dwLastScavengeTime = 0;
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serverinfo->fAutoReverseZones = 0;
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serverinfo->fAutoCacheUpdate = 0;
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serverinfo->fRecurseAfterForwarding = 0;
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serverinfo->fForwardDelegations = 1;
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serverinfo->fNoRecursion = 0;
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serverinfo->fSecureResponses = 0;
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serverinfo->fRoundRobin = 1;
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serverinfo->fLocalNetPriority = 0;
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serverinfo->fBindSecondaries = 0;
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serverinfo->fWriteAuthorityNs = 0;
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serverinfo->fStrictFileParsing = 0;
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serverinfo->fLooseWildcarding = 0 ;
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serverinfo->fDefaultAgingState = 0;
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return serverinfo;
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}
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struct dnsserver_zoneinfo *dnsserver_init_zoneinfo(struct dnsserver_zone *zone,
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struct dnsserver_serverinfo *serverinfo,
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bool is_forest)
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{
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struct dnsserver_zoneinfo *zoneinfo;
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uint32_t dp_flags;
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zoneinfo = talloc_zero(zone, struct dnsserver_zoneinfo);
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if (zoneinfo == NULL) {
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return NULL;
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}
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dp_flags = DNS_DP_ENLISTED;
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if (is_forest) {
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dp_flags |= DNS_DP_FOREST_DEFAULT;
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} else {
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dp_flags |= DNS_DP_DOMAIN_DEFAULT;
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}
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zoneinfo->Version = 0x32;
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zoneinfo->Flags = DNS_RPC_ZONE_DSINTEGRATED | DNS_RPC_ZONE_UPDATE_SECURE;
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zoneinfo->dwZoneType = DNS_ZONE_TYPE_PRIMARY;
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zoneinfo->fReverse = 0; /* We only support forward zones for now */
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zoneinfo->fAllowUpdate = DNS_ZONE_UPDATE_SECURE;
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zoneinfo->fPaused = 0;
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zoneinfo->fShutdown = 0;
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zoneinfo->fAutoCreated = 0;
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zoneinfo->fUseDatabase = 1;
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zoneinfo->pszDataFile = NULL;
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zoneinfo->aipMasters = NULL;
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zoneinfo->fSecureSecondaries = DNS_ZONE_SECSECURE_NO_XFER;
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zoneinfo->fNotifyLevel = DNS_ZONE_NOTIFY_LIST_ONLY;
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zoneinfo->aipSecondaries = NULL;
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zoneinfo->aipNotify = NULL;
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zoneinfo->fUseWins = 0;
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zoneinfo->fUseNbstat = 0;
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zoneinfo->fAging = 0;
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zoneinfo->dwNoRefreshInterval = serverinfo->dwDefaultNoRefreshInterval;
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zoneinfo->dwRefreshInterval = serverinfo->dwDefaultRefreshInterval;
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zoneinfo->dwAvailForScavengeTime = 0;
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zoneinfo->aipScavengeServers = NULL;
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zoneinfo->dwForwarderTimeout = 0;
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zoneinfo->fForwarderSlave = 0;
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zoneinfo->aipLocalMasters = NULL;
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zoneinfo->dwDpFlags = dp_flags;
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zoneinfo->pszDpFqdn = samdb_dn_to_dns_domain(zone, zone->partition_dn);
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zoneinfo->pwszZoneDn = discard_const_p(char, ldb_dn_get_linearized(zone->zone_dn));
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zoneinfo->dwLastSuccessfulSoaCheck = 0;
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zoneinfo->dwLastSuccessfulXfr = 0;
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zoneinfo->fQueuedForBackgroundLoad = 0;
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zoneinfo->fBackgroundLoadInProgress = 0;
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zoneinfo->fReadOnlyZone = 0;
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zoneinfo->dwLastXfrAttempt = 0;
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zoneinfo->dwLastXfrResult = 0;
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return zoneinfo;
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}
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struct dnsserver_zone *dnsserver_find_zone(struct dnsserver_zone *zones, const char *zone_name)
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{
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struct dnsserver_zone *z = NULL;
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for (z = zones; z; z = z->next) {
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if (strcmp(zone_name, z->name) == 0) {
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break;
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}
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}
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return z;
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}
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struct ldb_dn *dnsserver_name_to_dn(TALLOC_CTX *mem_ctx, struct dnsserver_zone *z, const char *name)
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{
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struct ldb_dn *dn;
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bool ret;
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dn = ldb_dn_copy(mem_ctx, z->zone_dn);
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if (dn == NULL) {
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return NULL;
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}
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if (strcmp(name, z->name) == 0) {
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ret = ldb_dn_add_child_fmt(dn, "DC=@");
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} else {
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ret = ldb_dn_add_child_fmt(dn, "DC=%s", name);
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}
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if (!ret) {
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talloc_free(dn);
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return NULL;
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}
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return dn;
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}
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uint32_t dnsserver_zone_to_request_filter(const char *zone_name)
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{
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uint32_t request_filter;
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if (strcmp(zone_name, "..AllZones") == 0) {
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request_filter = DNS_ZONE_REQUEST_PRIMARY
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| DNS_ZONE_REQUEST_SECONDARY
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| DNS_ZONE_REQUEST_AUTO
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| DNS_ZONE_REQUEST_FORWARD
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| DNS_ZONE_REQUEST_REVERSE
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| DNS_ZONE_REQUEST_FORWARDER
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| DNS_ZONE_REQUEST_STUB
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| DNS_ZONE_REQUEST_DS
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| DNS_ZONE_REQUEST_NON_DS
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| DNS_ZONE_REQUEST_DOMAIN_DP
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| DNS_ZONE_REQUEST_FOREST_DP
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| DNS_ZONE_REQUEST_CUSTOM_DP
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| DNS_ZONE_REQUEST_LEGACY_DP;
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} else if (strcmp(zone_name, "..AllZonesAndCache") == 0) {
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request_filter = DNS_ZONE_REQUEST_PRIMARY
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| DNS_ZONE_REQUEST_SECONDARY
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| DNS_ZONE_REQUEST_CACHE
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| DNS_ZONE_REQUEST_AUTO
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| DNS_ZONE_REQUEST_FORWARD
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| DNS_ZONE_REQUEST_REVERSE
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| DNS_ZONE_REQUEST_FORWARDER
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| DNS_ZONE_REQUEST_STUB
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| DNS_ZONE_REQUEST_DS
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| DNS_ZONE_REQUEST_NON_DS
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| DNS_ZONE_REQUEST_DOMAIN_DP
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| DNS_ZONE_REQUEST_FOREST_DP
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| DNS_ZONE_REQUEST_CUSTOM_DP
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| DNS_ZONE_REQUEST_LEGACY_DP;
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} else if (strcmp(zone_name, "..AllPrimaryZones") == 0) {
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request_filter = DNS_ZONE_REQUEST_PRIMARY;
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} else if (strcmp(zone_name, "..AllSecondaryZones") == 0) {
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request_filter = DNS_ZONE_REQUEST_SECONDARY;
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} else if (strcmp(zone_name, "..AllForwardZones") == 0) {
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request_filter = DNS_ZONE_REQUEST_FORWARD;
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} else if (strcmp(zone_name, "..AllReverseZones") == 0) {
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request_filter = DNS_ZONE_REQUEST_REVERSE;
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} else if (strcmp(zone_name, "..AllDsZones") == 0) {
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request_filter = DNS_ZONE_REQUEST_DS;
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} else if (strcmp(zone_name, "..AllNonDsZones") == 0) {
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request_filter = DNS_ZONE_REQUEST_NON_DS;
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} else if (strcmp(zone_name, "..AllPrimaryReverseZones") == 0) {
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request_filter = DNS_ZONE_REQUEST_PRIMARY
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| DNS_ZONE_REQUEST_REVERSE;
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} else if (strcmp(zone_name, "..AllPrimaryForwardZones") == 0) {
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request_filter = DNS_ZONE_REQUEST_PRIMARY
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| DNS_ZONE_REQUEST_FORWARD;
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} else if (strcmp(zone_name, "..AllSecondaryReverseZones") == 0) {
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request_filter = DNS_ZONE_REQUEST_SECONDARY
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| DNS_ZONE_REQUEST_REVERSE;
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} else if (strcmp(zone_name, "..AllSecondaryForwardZones") == 0) {
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request_filter = DNS_ZONE_REQUEST_SECONDARY
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| DNS_ZONE_REQUEST_REVERSE;
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}
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return request_filter;
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}
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