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Apple Network Setup manual OTCfgClosePrefs, OTCfgGetPrefsSize

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OTCfgClosePrefs

C H A P T E R 3

Network Setup Reference

OTCfgClosePrefs

Closes an entity.

OSStatus OTCCfgClosePrefs (CfgEntityAccessID accessID);

accessID On input, a value of type CfgEntityAccessID (page 100), obtained by previously calling OTCfgOpenPrefs (page 84), that identiﬁes the entity that is to be closed.

function result A value of noErr indicates that OTCfgClosePrefs returned successfully. For a list of other possible result codes, see “Result Codes” (page 110).

DISCUSSION

The OTCfgClosePrefs function closes the speciﬁed entity.

OTCfgGetPrefsSize

Gets the size of a preference.

OSStatus OTCCfgGetPrefsSize (CfgEntityAccessID accessID.

OSType prefsType,

ByteCount * length);

accessID	On input, a value of type CfgEntityAccessID (page 100),
	obtained by previously calling OTCfgOpenPrefs (page 84), that
	identiﬁes the entity containing the preference whose size is to be
	obtained.
prefsType	On input, a value of type prefsType that identiﬁes the type of
	the preference whose size is to be obtained.
length	On input, a pointer to a value of type ByteCount. On output,
	length contains the size in bytes of the preference speciﬁed by
	prefsType.

Network Setup Functions

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Apple Network Setup manual OTCfgClosePrefs, OTCfgGetPrefsSize

Contents

Network Setup I N S I D E M A C I N T O S H Apple Computer, Inc 2000 Apple Computer, Inc. All rights reserved About Network Setup ContentsUsing Network Setup About This ManualChapter Network Setup ReferenceGlossary Index Chapter 4 Network Setup Protocol Structures and Data TypesPage Using Network Setup About Network SetupFigures, Tables, and Listings ChapterPage Conventions Used in This Manual About This ManualInside AppleTalk, Second Edition For More InformationInside Macintosh Networking with Open Transport Open Transport Advanced Client Programming, available atNetwork Setup Architecture About Network SetupThe architecture shown in Figure 1-1 had a number of drawbacks The following key points are to be taken from Figure Inside the Network Setup Library Inside the Network Setup Library About Network Setup Figure 1-4 Structure of the Network Setup LibraryHigh-level framework Mid-level database OTCfgDatabase Structure Network Setup Database FundamentalsDatabase Structure Example Figure 1-5 Sample organization of the default area About Network Setup18 Network Setup Database Fundamentals LocalTalk for Printer AppleTalk networkork protocol entityDatabase Operations Figure 1-6 shows this process diagrammatically Preference Coherency Legacy IssuesLegacy Synchronization Algorithm Version Network Setup Version HistoryMac OS version 24 Network Setup Version History About Network SetupC H A P T E R Opening and Closing the Network Setup Database Using Network SetupOpening the Database for Reading Using Network Setup Listing 2-1 Opening the database for reading Opening the Database for Writing26 Opening and Closing the Network Setup Database Opening and Closing the Network Setup Database Using Network SetupListing 2-2 Opening the database for writing Closing the Database After Writing Closing the Database After ReadingOpening and Closing the Network Setup Database Using Network SetupListing 2-4 Closing the database after writing err = OTCfgCommitAreaModificationsdbRef, readArea, writeAreaListing All Entities Working with Entitiesstatic OSStatus MyGetEntitiesListCfgDatabaseRef dbRef, CfgAreaID area kCfgClassAnyEntity and kCfgTypeAnyEntity, respectivelyOSType entityClass OSType entityType CfgEntityRef **entityRefs CfgEntityInfo **entityInfos32 Working with Entities Using Network SetupThe next routine, shown in Listing 2-6, opens the database for reading, gets the entity references for all of the TCP/IP network connection entities in the default area using the MyGetEntitiesList routine in Listing 2-5, and prints their user-visible names. This routine calls a routine, MyGetEntityUserVisibleName, which hasn’t been documented yet. It is shown in Listing 2-9 in the section “Reading and Writing Preferences” page Finding an Active Entity Reading and Writing PreferencesUsing Network Setup Reading Fixed-size PreferencesListing 2-7 Reading a ﬁxed-size preference Reading and Writing PreferencesThe sample shown in Listing 2-7, which opens and closes the entity before reading each preference, is implemented in an inefﬁcient manner for the sake of clarity. If you are reading multiple preferences, it is more efﬁcient to open the entity once. Then read the preferences by calling OTCfgGetPrefs or OTCfgSetPrefs multiple times and close the entity when you’re done assertdbRef != nil assertentity != nil assertname != nil Reading Variable-size Preferences38 Reading and Writing Preferences Using Network SetupWriting Preferences Iterating the Preferences in an Entity Reading and Writing Preferences Using Network SetupWorking with Sets Finding the Active Set Entity The MyFindActiveSet routine in Listing 2-13 implements the ﬁrst two steps. It starts by getting a list of all of the set entities by calling the MyGetEntitiesList routine Listing 2-5. Then MyFindActiveSet iterates through all of the set entities, reading the kOTCfgSetsStructPref preference of each set entity. That preference maps to the CfgSetsStruct structure, which contains an fFlags member. One bit of the fFlags member, kOTCfgSetsFlagActiveMask, indicates whether this set entity is the active set entity. If it is, the routine breaks out of the loop and returns the set’s entity reference to the caller breaks out of the loop and returns the found entity Listing 2-14 Finding the active entity of a given class and type Using Network Setup46 Working with Sets Listing 2-15 Finding the active TCP/IP entity Using Network SetupWorking with Sets Areas and Sets TCP/IP Notes Protocol-speciﬁc Topicsaccess the preference in its packed format Protocol-speciﬁc Topics Using Network Setupcursor = UInt8 * packedPref 52 Protocol-speciﬁc Topics Using Network SetupUInt8 *cursor Remote Access Notes OTCfgRemoteClientLocks page Modem NotesNotes for Third Parties Network Setup and Third-party Protocol StacksStoring Third-party Preferences in Apple Entities 56 Notes for Third Parties Using Network SetupC H A P T E R Network Setup Functions Network Setup ReferenceOpening and Closing the Network Setup Database OTCfgCloseDatabase OTCfgOpenDatabaseManaging Areas OTCfgGetCurrentArea OTCfgOpenArea OTCfgSetCurrentAreaOTCfgCloseArea function result OTCfgBeginAreaModiﬁcationsfunction result OTCfgCommitAreaModiﬁcationsOTCfgIsSameAreaID OTCfgAbortAreaModiﬁcationsfunction result OTCfgAbortAreaModifications returns kCfgErrAreaNotFoundfunction result OTCfgGetAreaNamefunction result OTCfgSetAreaNameOTCfgGetAreasList OTCfgGetAreasCountfunction result function result that are available. On output, itemCount points to the number offunction result OTCfgCreateAreafunction result OTCfgDuplicateAreaOTCfgDeleteArea Managing EntitiesOTCfgGetEntitiesCount OTCfgGetEntitiesList entityType On input, a value of type CfgEntityType that speciﬁes the type that is to be matched. To specify all types, set entityType to kCfgTypeAnyEntity. For a list of possible types, see “Entity Classes and Types” page OTCfgCreateEntity OTCfgIsSameEntityReffunction result On input, a value of type CfgDatabaseRef page 98 thatOTCfgDuplicateEntity OTCfgDeleteEntityfunction result const CfgEntityRef* entityRef, const CfgEntityRef* newEntityRefOTCfgGetEntityLogicalName function result None OTCfgGetEntityNamefunction result OTCfgSetEntityNameOTCfgChangeEntityArea OTCfgGetEntityAreafunction result function result None Managing Preferencesfunction result OTCfgOpenPrefsOTCfgGetPrefsSize OTCfgClosePrefsfunction result OTCfgGetPrefsvoid* data, ByteCount length function result OTCfgSetPrefsconst void* data, ByteCount length OTCfgGetPrefsTOCCount OTCfgGetPrefsTOC OTCfgDeletePrefs OTCfgGetDefaultOTCfgGetTemplate function result Preference UtilitiesOTCfgDecrypt OTCfgEncryptOTCfgInstallNotiﬁer Installing and Removing a Notiﬁcation Callbackfunction result On input, a value of type CfgDatabaseRef page 98 thatOTCfgRemoveNotiﬁer Application-Deﬁned Routinesfunction result Notiﬁcation Callback Routine Network Setup Structures and Data TypesCfgAreaID CfgDatabaseRefCfgEntityInfo CfgEntityRefField descriptions CfgPrefsHeader CfgEntityAccessIDCfgSetsStruct CfgResourceLocatorFlags for this set. For possible values, see the enumeration CfgSetsVector CfgSetsElementEntity Classes and Types Network Setup ConstantsWildcard Classes and Types Per-connection Preference Types Common Preference TypesGlobal Preference Types Backward Compatibility Preference Types Set Entity Preference TypesGlobal Backward Compatibility Preference Types OTCfgUserMode Preference Invalid Area IDResult Codes Protocol Structures Network Setup Protocol Structures and Data TypesTCP/IP Structures OTCfgTCPInterfacesUnpacked modulekMaxModuleNameSize OTCfgTCPInterfacesPackedPart OTCfgTCPInterfacesPackedpartsizeofOTCfgTCPInterfacesPackedPart OTCfgTCPDHCPLeaseInfo OTCfgTCPLocks OTCfgTCPDNSServersListlockLocalDomainName lockAdminDomainNamelockDNSServersList Set to TRUE to lock the “Router address” text ﬁeld OTCfgTCPRoutersListEntry OTCfgTCPRoutersListOTCfgTCPRoutersListEntry page 119 structures OTCfgTCPSearchList OTCfgTCPSearchDomainsOTCfgTCPUnloadAttr Apple Remote Access Structures OTCfgRemoteApplication OTCfgRemoteAlternateAddressOTCfgRemoteARAP useVerboseLogLock OTCfgRemoteClientLocksregUserOrGuestLock The “Allow error correction and compression in modem” OTCfgRemoteConnect OTCfgRemoteClientMiscconnectAutomatically canInteractallowModemDataCompression issueConnectedRemindersOTCfgRemotePPPConnectScript If Notification Manager reminders are enabled, the number isAssisted to 1 to use Dial Assist. When isAssisted is set to OTCfgRemoteDialAssistadditionalPtr OTCfgRemoteDialingmade. Only valid if dialMode is not kOTCfgRemoteRedialNone OTCfgRemoteIPCP lowerLayerName36 OTCfgRemoteLCPkOTCfgRemoteAcceptedVersion. When reading the version OTCfgRemoteLogOptions OTCfgRemotePasswordconfigCount OTCfgRemoteServerconfigIDs1 struct OTCfgRemoteServerPort OTCfgRemoteServerPortOTCfgRemoteNetworkProtocol serialLayerNamekMaxProviderNameSizeAccess mode flags. For possible values, see the OTCfgRemoteTerminalNetwork Setup Protocol Structures and Data Types Must be TRUEOTCfgRemoteUserMode OTCfgRemoteX25 OTCfgModemGeneral Modem StructuresOTCfgModemApplication OTCfgModemLocks AppleTalk Structures OTCfgATalkGeneral OTCfgATalkGeneralAARP fMaxConsecutiveDataPackets OTCfgATalkGeneralADSPPage OTCfgATalkGeneralASP fDefaultRetryInterval OTCfgATalkGeneralATPfDefaultReleaseTimer Network Setup Protocol Structures and Data Types OTCfgATalkGeneralDDPProtocol Structures fMyZonekZIPMaxZoneLength+1The maximum amount of data that packets of this protocol OTCfgATalkGeneralNBP fDefaultTickleInterval OTCfgATalkGeneralPAPfDefaultTickleRetries fDefaultPAPEOMEnabledOTCfgATalkGeneralZIP OTCfgATalkLocks Constant descriptions kOTCfgATalkPortLockMask OTCfgATalkNetworkArchitectureOTCfgATalkPortDeviceType Infrared StructuresOTCfgIRGeneral Protocol Constants and Other Data TypesNetwork Setup Protocol Structures and Data Types TCP/IP Constants and Other Data Types“AppleTalk Constants and Other Data Types” page “Infrared Constants and Other Data Types” pagekDontShutDownOnARPCollisionMask = Masks for the kOTCfgProtocolOptionsPref Preference0x0002 0x0004OTCfgTCPConﬁgMethod ARA Per-Connection Preferences Types Apple Remote Access Constants and Other Data TypesThe preference type for the OTCfgRemoteARAP page 124 structure Network Setup Protocol Structures and Data TypesThe preference type for the OTCfgRemoteDialing page 131 structure The preference type for the OTCfgRemoteClientLocks page 125 structureThe preference type for the OTCfgRemoteConnect page 127 structure OTCfgRemotePPPConnectScript ARA Global Preference TypesOTCfgRemoteProtocol OTCfgRemoteDialMode OTCfgRemoteLogLevelOTCfgRemoteNetworkProtocol OTCfgRemoteAnswerModeModem Constants and Other Data Types OTCfgRemoteNetAccessModeOTCfgModemDialingToneMode Modem Global Preference TypesPer-connection AppleTalk Preference Types AppleTalk Constants and Other Data TypesGlobal AppleTalk Preference Types Infrared Constants and Other Data TypesOTCfgIRPortSetting Glossary maximum transmission unit MTU The maximum number of bytes in a packet media access control address The six-byte Transmission Control Protocol/Internet Protocol A connection-oriented transport-layer Internet protocol that provides reliable full-duplex data transmission Index Page notiﬁcation routine installing 94 removing named areas network connection entities 16 Network Setuplegacy preference ﬁles mid-level database 15 modem constants 170 multihoming 12Page setting entity names 81 structures set entities 16 active, number of 43 usingTCP/IP constants 160 preferences temporary area 20 third-party developers 55 type, entityI N D E