| /* -*- Mode: C; tab-width: 4 -*- |
| * |
| * Copyright (c) 2002-2003 Apple Computer, Inc. All rights reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| |
| Change History (most recent first): |
| |
| $Log: uDNS.h,v $ |
| Revision 1.93 2008/09/24 23:48:05 cheshire |
| Don't need to pass whole ServiceRecordSet reference to GetServiceTarget; |
| it only needs to access the embedded SRV member of the set |
| |
| Revision 1.92 2008/06/19 23:42:03 mcguire |
| <rdar://problem/4206534> Use all configured DNS servers |
| |
| Revision 1.91 2008/06/19 01:20:50 mcguire |
| <rdar://problem/4206534> Use all configured DNS servers |
| |
| Revision 1.90 2007/12/22 02:25:30 cheshire |
| <rdar://problem/5661128> Records and Services sometimes not re-registering on wake from sleep |
| |
| Revision 1.89 2007/12/15 01:12:27 cheshire |
| <rdar://problem/5526796> Need to remove active LLQs from server upon question cancellation, on sleep, and on shutdown |
| |
| Revision 1.88 2007/10/25 20:06:13 cheshire |
| Don't try to do SOA queries using private DNS (TLS over TCP) queries |
| |
| Revision 1.87 2007/10/24 22:40:06 cheshire |
| Renamed: RecordRegistrationCallback -> RecordRegistrationGotZoneData |
| Renamed: ServiceRegistrationZoneDataComplete -> ServiceRegistrationGotZoneData |
| |
| Revision 1.86 2007/10/18 23:06:42 cheshire |
| <rdar://problem/5519458> BTMM: Machines don't appear in the sidebar on wake from sleep |
| Additional fixes and refinements |
| |
| Revision 1.85 2007/10/18 20:23:17 cheshire |
| Moved SuspendLLQs into mDNS.c, since it's only called from one place |
| |
| Revision 1.84 2007/10/17 22:49:54 cheshire |
| <rdar://problem/5519458> BTMM: Machines don't appear in the sidebar on wake from sleep |
| |
| Revision 1.83 2007/10/17 22:37:23 cheshire |
| <rdar://problem/5536979> BTMM: Need to create NAT port mapping for receiving LLQ events |
| |
| Revision 1.82 2007/10/17 21:53:51 cheshire |
| Improved debugging messages; renamed startLLQHandshakeCallback to LLQGotZoneData |
| |
| Revision 1.81 2007/10/16 21:16:50 cheshire |
| Get rid of unused uDNS_Sleep() routine |
| |
| Revision 1.80 2007/10/16 20:59:41 cheshire |
| Export SuspendLLQs/SleepServiceRegistrations/SleepRecordRegistrations so they're callable from other files |
| |
| Revision 1.79 2007/09/20 01:13:19 cheshire |
| Export CacheGroupForName so it's callable from other files |
| |
| Revision 1.78 2007/09/14 21:26:09 cheshire |
| <rdar://problem/5482627> BTMM: Need to manually avoid port conflicts when using UPnP gateways |
| |
| Revision 1.77 2007/09/12 23:03:08 cheshire |
| <rdar://problem/5476978> DNSServiceNATPortMappingCreate callback not giving correct interface index |
| |
| Revision 1.76 2007/09/12 19:22:19 cheshire |
| Variable renaming in preparation for upcoming fixes e.g. priv/pub renamed to intport/extport |
| Made NAT Traversal packet handlers take typed data instead of anonymous "mDNSu8 *" byte pointers |
| |
| Revision 1.75 2007/08/28 23:53:21 cheshire |
| Rename serviceRegistrationCallback -> ServiceRegistrationZoneDataComplete |
| |
| Revision 1.74 2007/08/24 00:15:20 cheshire |
| Renamed GetAuthInfoForName() to GetAuthInfoForName_internal() to make it clear that it may only be called with the lock held |
| |
| Revision 1.73 2007/08/01 03:09:22 cheshire |
| <rdar://problem/5344587> BTMM: Create NAT port mapping for autotunnel port |
| |
| Revision 1.72 2007/08/01 00:04:13 cheshire |
| <rdar://problem/5261696> Crash in tcpKQSocketCallback |
| Half-open TCP connections were not being cancelled properly |
| |
| Revision 1.71 2007/07/30 23:31:26 cheshire |
| Code for respecting TTL received in uDNS responses should exclude LLQ-type responses |
| |
| Revision 1.70 2007/07/27 20:52:29 cheshire |
| Made uDNS_recvLLQResponse() return tri-state result: LLQ_Not, LLQ_First, or LLQ_Events |
| |
| Revision 1.69 2007/07/27 19:30:40 cheshire |
| Changed mDNSQuestionCallback parameter from mDNSBool to QC_result, |
| to properly reflect tri-state nature of the possible responses |
| |
| Revision 1.68 2007/07/27 18:38:56 cheshire |
| Rename "uDNS_CheckQuery" to more informative "uDNS_CheckCurrentQuestion" |
| |
| Revision 1.67 2007/07/20 23:11:12 cheshire |
| Fix code layout |
| |
| Revision 1.66 2007/07/16 23:54:48 cheshire |
| <rdar://problem/5338850> Crash when removing or changing DNS keys |
| |
| Revision 1.65 2007/07/16 20:14:22 vazquez |
| <rdar://problem/3867231> LegacyNATTraversal: Need complete rewrite |
| |
| Revision 1.64 2007/07/11 02:53:36 cheshire |
| <rdar://problem/5303807> Register IPv6-only hostname and don't create port mappings for AutoTunnel services |
| Add ServiceRecordSet parameter in GetServiceTarget |
| |
| Revision 1.63 2007/06/29 00:09:24 vazquez |
| <rdar://problem/5301908> Clean up NAT state machine (necessary for 6 other fixes) |
| |
| Revision 1.62 2007/05/14 23:53:00 cheshire |
| Export mDNS_StartQuery_internal and mDNS_StopQuery_internal so they can be called from uDNS.c |
| |
| Revision 1.61 2007/05/07 20:43:45 cheshire |
| <rdar://problem/4241419> Reduce the number of queries and announcements |
| |
| Revision 1.60 2007/05/04 21:46:10 cheshire |
| Get rid of uDNS_Close (synonym for uDNS_Sleep) |
| |
| Revision 1.59 2007/05/03 22:40:38 cheshire |
| <rdar://problem/4669229> mDNSResponder ignores bogus null target in SRV record |
| |
| Revision 1.58 2007/05/02 22:21:33 cheshire |
| <rdar://problem/5167331> RegisterRecord and RegisterService need to cancel StartGetZoneData |
| |
| Revision 1.57 2007/04/27 19:28:02 cheshire |
| Any code that calls StartGetZoneData needs to keep a handle to the structure, so |
| it can cancel it if necessary. (First noticed as a crash in Apple Remote Desktop |
| -- it would start a query and then quickly cancel it, and then when |
| StartGetZoneData completed, it had a dangling pointer and crashed.) |
| |
| Revision 1.56 2007/04/25 02:14:38 cheshire |
| <rdar://problem/4246187> uDNS: Identical client queries should reference a single shared core query |
| Additional fixes to make LLQs work properly |
| |
| Revision 1.55 2007/04/22 06:02:03 cheshire |
| <rdar://problem/4615977> Query should immediately return failure when no server |
| |
| Revision 1.54 2007/04/04 21:48:53 cheshire |
| <rdar://problem/4720694> Combine unicast authoritative answer list with multicast list |
| |
| Revision 1.53 2007/03/28 15:56:37 cheshire |
| <rdar://problem/5085774> Add listing of NAT port mapping and GetAddrInfo requests in SIGINFO output |
| |
| Revision 1.52 2007/02/28 01:44:26 cheshire |
| <rdar://problem/5027863> Byte order bugs in uDNS.c, uds_daemon.c, dnssd_clientstub.c |
| |
| Revision 1.51 2007/01/27 03:34:27 cheshire |
| Made GetZoneData use standard queries (and cached results); |
| eliminated GetZoneData_Callback() packet response handler |
| |
| Revision 1.50 2007/01/19 21:17:32 cheshire |
| StartLLQPolling needs to call SetNextQueryTime() to cause query to be done in a timely fashion |
| |
| Revision 1.49 2007/01/17 21:35:31 cheshire |
| For clarity, rename zoneData_t field "isPrivate" to "zonePrivate" |
| |
| Revision 1.48 2007/01/10 22:51:57 cheshire |
| <rdar://problem/4917539> Add support for one-shot private queries as well as long-lived private queries |
| |
| Revision 1.47 2007/01/05 08:30:43 cheshire |
| Trim excessive "$Log" checkin history from before 2006 |
| (checkin history still available via "cvs log ..." of course) |
| |
| Revision 1.46 2007/01/04 01:41:47 cheshire |
| Use _dns-update-tls/_dns-query-tls/_dns-llq-tls instead of creating a new "_tls" subdomain |
| |
| Revision 1.45 2006/12/22 20:59:49 cheshire |
| <rdar://problem/4742742> Read *all* DNS keys from keychain, |
| not just key for the system-wide default registration domain |
| |
| Revision 1.44 2006/12/20 04:07:35 cheshire |
| Remove uDNS_info substructure from AuthRecord_struct |
| |
| Revision 1.43 2006/12/16 01:58:32 cheshire |
| <rdar://problem/4720673> uDNS: Need to start caching unicast records |
| |
| Revision 1.42 2006/11/30 23:07:56 herscher |
| <rdar://problem/4765644> uDNS: Sync up with Lighthouse changes for Private DNS |
| |
| Revision 1.41 2006/11/18 05:01:30 cheshire |
| Preliminary support for unifying the uDNS and mDNS code, |
| including caching of uDNS answers |
| |
| Revision 1.40 2006/11/10 07:44:04 herscher |
| <rdar://problem/4825493> Fix Daemon locking failures while toggling BTMM |
| |
| Revision 1.39 2006/10/20 05:35:05 herscher |
| <rdar://problem/4720713> uDNS: Merge unicast active question list with multicast list. |
| |
| Revision 1.38 2006/09/26 01:54:02 herscher |
| <rdar://problem/4245016> NAT Port Mapping API (for both NAT-PMP and UPnP Gateway Protocol) |
| |
| Revision 1.37 2006/09/15 21:20:15 cheshire |
| Remove uDNS_info substructure from mDNS_struct |
| |
| Revision 1.36 2006/08/14 23:24:23 cheshire |
| Re-licensed mDNSResponder daemon source code under Apache License, Version 2.0 |
| |
| Revision 1.35 2006/07/30 05:45:36 cheshire |
| <rdar://problem/4304215> Eliminate MIN_UCAST_PERIODIC_EXEC |
| |
| Revision 1.34 2006/07/15 02:01:29 cheshire |
| <rdar://problem/4472014> Add Private DNS client functionality to mDNSResponder |
| Fix broken "empty string" browsing |
| |
| Revision 1.33 2006/07/05 22:53:28 cheshire |
| <rdar://problem/4472014> Add Private DNS client functionality to mDNSResponder |
| |
| */ |
| |
| #ifndef __UDNS_H_ |
| #define __UDNS_H_ |
| |
| #include "mDNSEmbeddedAPI.h" |
| #include "DNSCommon.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #define RESTART_GOODBYE_DELAY (6 * mDNSPlatformOneSecond) // delay after restarting LLQ before nuking previous known answers (avoids flutter if we restart before we have networking up) |
| #define INIT_UCAST_POLL_INTERVAL (3 * mDNSPlatformOneSecond) // this interval is used after send failures on network transitions |
| // which typically heal quickly, so we start agressively and exponentially back off |
| #define MAX_UCAST_POLL_INTERVAL (60 * 60 * mDNSPlatformOneSecond) |
| //#define MAX_UCAST_POLL_INTERVAL (1 * 60 * mDNSPlatformOneSecond) |
| #define LLQ_POLL_INTERVAL (15 * 60 * mDNSPlatformOneSecond) // Polling interval for zones w/ an advertised LLQ port (ie not static zones) if LLQ fails due to NAT, etc. |
| #define RESPONSE_WINDOW (60 * mDNSPlatformOneSecond) // require server responses within one minute of request |
| #define MAX_UCAST_UNANSWERED_QUERIES 2 // the number of unanswered queries from any one uDNS server before trying another server |
| #define DNSSERVER_PENALTY_TIME (60 * mDNSPlatformOneSecond) // number of seconds for which new questions don't pick this server |
| |
| #define DEFAULT_UPDATE_LEASE 7200 |
| |
| #define QuestionIntervalStep 3 |
| #define QuestionIntervalStep2 (QuestionIntervalStep*QuestionIntervalStep) |
| #define QuestionIntervalStep3 (QuestionIntervalStep*QuestionIntervalStep*QuestionIntervalStep) |
| #define InitialQuestionInterval ((mDNSPlatformOneSecond + QuestionIntervalStep-1) / QuestionIntervalStep) |
| |
| // Entry points into unicast-specific routines |
| |
| extern void LLQGotZoneData(mDNS *const m, mStatus err, const ZoneData *zoneInfo); |
| extern void startLLQHandshake(mDNS *m, DNSQuestion *q); |
| extern void sendLLQRefresh(mDNS *m, DNSQuestion *q); |
| |
| extern void SleepServiceRegistrations(mDNS *m); |
| extern void SleepRecordRegistrations(mDNS *m); |
| |
| // uDNS_UpdateRecord |
| // following fields must be set, and the update validated, upon entry. |
| // rr->NewRData |
| // rr->newrdlength |
| // rr->UpdateCallback |
| |
| extern mStatus uDNS_AddRecordToService(mDNS *const m, ServiceRecordSet *sr, ExtraResourceRecord *extra); |
| extern mStatus uDNS_UpdateRecord(mDNS *m, AuthRecord *rr); |
| |
| extern void SetNextQueryTime(mDNS *const m, const DNSQuestion *const q); |
| extern CacheGroup *CacheGroupForName(const mDNS *const m, const mDNSu32 slot, const mDNSu32 namehash, const domainname *const name); |
| extern mStatus mDNS_Register_internal(mDNS *const m, AuthRecord *const rr); |
| // mDNS_Dereg_normal is used for most calls to mDNS_Deregister_internal |
| // mDNS_Dereg_conflict is used to indicate that this record is being forcibly deregistered because of a conflict |
| // mDNS_Dereg_repeat is used when cleaning up, for records that may have already been forcibly deregistered |
| typedef enum { mDNS_Dereg_normal, mDNS_Dereg_conflict, mDNS_Dereg_repeat } mDNS_Dereg_type; |
| extern mStatus mDNS_Deregister_internal(mDNS *const m, AuthRecord *const rr, mDNS_Dereg_type drt); |
| extern mStatus mDNS_StartQuery_internal(mDNS *const m, DNSQuestion *const question); |
| extern mStatus mDNS_StopQuery_internal(mDNS *const m, DNSQuestion *const question); |
| extern mStatus mDNS_StartNATOperation_internal(mDNS *const m, NATTraversalInfo *traversal); |
| |
| extern void RecordRegistrationGotZoneData(mDNS *const m, mStatus err, const ZoneData *zoneData); |
| extern mStatus uDNS_DeregisterRecord(mDNS *const m, AuthRecord *const rr); |
| |
| extern void ServiceRegistrationGotZoneData(mDNS *const m, mStatus err, const ZoneData *result); |
| extern const domainname *GetServiceTarget(mDNS *m, AuthRecord *const rr); |
| extern mStatus uDNS_DeregisterService(mDNS *const m, ServiceRecordSet *srs); |
| |
| extern void uDNS_CheckCurrentQuestion(mDNS *const m); |
| |
| // integer fields of msg header must be in HOST byte order before calling this routine |
| extern void uDNS_ReceiveMsg(mDNS *const m, DNSMessage *const msg, const mDNSu8 *const end, |
| const mDNSAddr *const srcaddr, const mDNSIPPort srcport); |
| |
| // returns time of next scheduled event |
| extern void uDNS_Execute(mDNS *const m); |
| extern void ResetDNSServerPenalties(mDNS *m); |
| |
| extern mStatus uDNS_SetupDNSConfig(mDNS *const m); |
| extern mStatus uDNS_RegisterSearchDomains(mDNS *const m); |
| |
| typedef enum |
| { |
| uDNS_LLQ_Not = 0, // Normal uDNS answer: Flush any stale records from cache, and respect record TTL |
| uDNS_LLQ_Ignore, // LLQ initial challenge packet: ignore -- has no useful records for us |
| uDNS_LLQ_Entire, // LLQ initial set of answers: Flush any stale records from cache, but assume TTL is 2 x LLQ refresh interval |
| uDNS_LLQ_Events // LLQ event packet: don't flush cache; assume TTL is 2 x LLQ refresh interval |
| } uDNS_LLQType; |
| |
| extern uDNS_LLQType uDNS_recvLLQResponse(mDNS *const m, const DNSMessage *const msg, const mDNSu8 *const end, const mDNSAddr *const srcaddr, const mDNSIPPort srcport); |
| extern DomainAuthInfo *GetAuthInfoForName_internal(mDNS *m, const domainname *const name); |
| extern DomainAuthInfo *GetAuthInfoForQuestion(mDNS *m, const DNSQuestion *const q); |
| extern void DisposeTCPConn(struct tcpInfo_t *tcp); |
| |
| // NAT traversal |
| extern void uDNS_ReceiveNATPMPPacket(mDNS *m, const mDNSInterfaceID InterfaceID, mDNSu8 *pkt, mDNSu16 len); // Called for each received NAT-PMP packet |
| extern void natTraversalHandleAddressReply(mDNS *const m, mDNSu16 err, mDNSv4Addr ExtAddr); |
| extern void natTraversalHandlePortMapReply(mDNS *const m, NATTraversalInfo *n, const mDNSInterfaceID InterfaceID, mDNSu16 err, mDNSIPPort extport, mDNSu32 lease); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif // __UDNS_H_ |
