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IB_Services.pas
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IB_Services.pas
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{***************************************************************}
{ FIBPlus - component library for direct access to Firebird and }
{ InterBase databases }
{ }
{ FIBPlus is based in part on the product }
{ Free IB Components, written by Gregory H. Deatz for }
{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
{ mailto:gdeatz@hlmdd.com }
{ }
{ Copyright (c) 1998-2007 Devrace Ltd. }
{ Written by Serge Buzadzhy (buzz@devrace.com) }
{ }
{ ------------------------------------------------------------- }
{ FIBPlus home page: http://www.fibplus.com/ }
{ FIBPlus support : http://www.devrace.com/support/ }
{ ------------------------------------------------------------- }
{ }
{ Please see the file License.txt for full license information }
{***************************************************************}
unit IB_Services;
interface
{$I FIBPlus.inc}
uses
SysUtils, Classes,
ibase, IB_Intf, IB_Externals {$IFDEF D6+}, Variants {$ELSE} ,StdFuncs {$ENDIF};
const
DefaultBufferSize = 32000;
SPBPrefix = 'isc_spb_';
SPBConstantNames: array[1..isc_spb_last_spb_constant] of AnsiString = (
'user_name',
'sys_user_name',
'sys_user_name_enc',
'password',
'password_enc',
'command_line',
'db_name',
'verbose',
'options',
'connect_timeout',
'dummy_packet_interval',
'sql_role_name',
'instance_name'
);
SPBConstantValues: array[1..isc_spb_last_spb_constant] of Integer = (
isc_spb_user_name_mapped_to_server,
isc_spb_sys_user_name_mapped_to_server,
isc_spb_sys_user_name_enc_mapped_to_server,
isc_spb_password_mapped_to_server,
isc_spb_password_enc_mapped_to_server,
isc_spb_command_line_mapped_to_server,
isc_spb_dbname_mapped_to_server,
isc_spb_verbose_mapped_to_server,
isc_spb_options_mapped_to_server,
isc_spb_connect_timeout_mapped_to_server,
isc_spb_dummy_packet_interval_mapped_to_server,
isc_spb_sql_role_name_mapped_to_server ,
isc_spb_instance_name_mapped_to_server
);
{$IFDEF INC_SERVICE_SUPPORT}
type
TProtocol = (TCP, SPX, NamedPipe, Local);
TOutputBufferOption = (ByLine, ByChunk);
TpFIBCustomService = class;
TLoginEvent = procedure(Database: TpFIBCustomService;
LoginParams: TStrings) of object;
TpFIBCustomService = class(TComponent)
private
FClientLibrary: IIBClientLibrary;
FLibraryName: string;
procedure LoadLibrary;
private
FIBLoaded: Boolean;
FParamsChanged : Boolean;
FSPB, FQuerySPB : PAnsiChar;
FSPBLength, FQuerySPBLength : Short;
// FTraceFlags: TTraceFlags;
FOnLogin: TLoginEvent;
FLoginPrompt: Boolean;
FBufferSize: Integer;
FOutputBuffer: PAnsiChar;
FQueryParams: AnsiString;
FServerName: AnsiString;
FHandle: TISC_SVC_HANDLE;
FStreamedActive : Boolean;
FOnAttach: TNotifyEvent;
FOutputBufferOption: TOutputBufferOption;
FProtocol: TProtocol;
FParams: TStrings;
// FGDSLibrary : IGDSLibrary;
function GetActive: Boolean;
function GetServiceParamBySPB(const Idx: Integer): String;
procedure SetActive(const Value: Boolean);
procedure SetBufferSize(const Value: Integer);
procedure SetParams(const Value: TStrings);
procedure SetServerName(const Value: Ansistring);
procedure SetProtocol(const Value: TProtocol);
procedure SetServiceParamBySPB(const Idx: Integer;
const Value: String);
function IndexOfSPBConst(st: String): Integer;
procedure ParamsChange(Sender: TObject);
procedure ParamsChanging(Sender: TObject);
procedure CheckServerName;
function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
function ParseString(var RunLen: Integer): Ansistring;
function ParseInteger(var RunLen: Integer): Integer;
procedure GenerateSPB(sl: TStrings; var SPB: AnsiString; var SPBLength: Short);
procedure SetLibraryName(const Value: string);
function StoredLibraryName: Boolean;
protected
procedure Loaded; override;
function Login: Boolean;
procedure CheckActive;
procedure CheckInactive;
property OutputBuffer : PAnsiChar read FOutputBuffer;
property OutputBufferOption : TOutputBufferOption read FOutputBufferOption write FOutputBufferOption;
property BufferSize : Integer read FBufferSize write SetBufferSize default DefaultBufferSize;
procedure InternalServiceQuery;
property ServiceQueryParams: AnsiString read FQueryParams write FQueryParams;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure Attach;
procedure Detach;
property Handle: TISC_SVC_HANDLE read FHandle;
property ServiceParamBySPB[const Idx: Integer]: String read GetServiceParamBySPB
write SetServiceParamBySPB;
property ClientLibrary: IIBClientLibrary read FClientLibrary;
property SSPB:PAnsiChar read FSPB;
published
property Active: Boolean read GetActive write SetActive default False;
property ServerName: Ansistring read FServerName write SetServerName;
property LibraryName:string read FLibraryName write SetLibraryName stored StoredLibraryName;
property Protocol: TProtocol read FProtocol write SetProtocol default Local;
property Params: TStrings read FParams write SetParams;
property LoginPrompt: Boolean read FLoginPrompt write FLoginPrompt default True;
// property TraceFlags: TTraceFlags read FTraceFlags write FTraceFlags;
property OnAttach: TNotifyEvent read FOnAttach write FOnAttach;
property OnLogin: TLoginEvent read FOnLogin write FOnLogin;
end;
TDatabaseInfo = class
public
NoOfAttachments: Integer;
NoOfDatabases: Integer;
DbName: array of string;
constructor Create;
destructor Destroy; override;
end;
TLicenseInfo = class
public
Key: array of string;
Id: array of string;
Desc: array of string;
LicensedUsers: Integer;
constructor Create;
destructor Destroy; override;
end;
TLicenseMaskInfo = class
public
LicenseMask: Integer;
CapabilityMask: Integer;
end;
TConfigFileData = class
public
ConfigFileValue: array of integer;
ConfigFileKey: array of integer;
constructor Create;
destructor Destroy; override;
end;
TConfigParams = class
public
ConfigFileData: TConfigFileData;
ConfigFileParams: array of string;
BaseLocation: string;
LockFileLocation: string;
MessageFileLocation: string;
SecurityDatabaseLocation: string;
constructor Create;
destructor Destroy; override;
end;
TVersionInfo = class
public
ServerVersion: String;
ServerImplementation: string;
ServiceVersion: Integer;
end;
TPropertyOption = (Database, License, LicenseMask, ConfigParameters, Version);
TPropertyOptions = set of TPropertyOption;
TpFIBServerProperties = class(TpFIBCustomService)
private
FOptions: TPropertyOptions;
FDatabaseInfo: TDatabaseInfo;
FLicenseInfo: TLicenseInfo;
FLicenseMaskInfo: TLicenseMaskInfo;
FVersionInfo: TVersionInfo;
FConfigParams: TConfigParams;
procedure ParseConfigFileData(var RunLen: Integer);
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure Fetch;
procedure FetchDatabaseInfo;
procedure FetchLicenseInfo;
procedure FetchLicenseMaskInfo;
procedure FetchConfigParams;
procedure FetchVersionInfo;
property DatabaseInfo: TDatabaseInfo read FDatabaseInfo;
property LicenseInfo: TLicenseInfo read FLicenseInfo;
property LicenseMaskInfo: TLicenseMaskInfo read FLicenseMaskInfo;
property VersionInfo: TVersionInfo read FVersionInfo;
property ConfigParams: TConfigParams read FConfigParams;
published
property Options : TPropertyOptions read FOptions write FOptions;
end;
TpFIBControlService = class (TpFIBCustomService)
private
FStartParams: AnsiString;
FStartSPB: PAnsiChar;
FStartSPBLength: Integer;
function GetIsServiceRunning: Boolean;
protected
property ServiceStartParams: AnsiString read FStartParams write FStartParams;
procedure SetServiceStartOptions; virtual;
procedure ServiceStartAddParam (Value: Ansistring; param: Integer); overload;
procedure ServiceStartAddParam (Value: Integer; param: Integer); overload;
procedure InternalServiceStart;
public
constructor Create(AOwner: TComponent); override;
procedure ServiceStart; virtual;
property IsServiceRunning : Boolean read GetIsServiceRunning;
end;
TServiceGetTextNotify = procedure (Sender: TObject; const Text: string) of object;
TpFIBControlAndQueryService = class (TpFIBControlService)
private
FEof: Boolean;
FAction: Integer;
FOnTextNotify: TServiceGetTextNotify;
procedure SetAction(Value: Integer);
protected
property Action: Integer read FAction write SetAction;
property OnTextNotify: TServiceGetTextNotify read FOnTextNotify write FOnTextNotify;
public
constructor Create (AOwner: TComponent); override;
function GetNextLine : String;
function GetNextChunk : String;
procedure ServiceStart; override;
function GetNextBuf: AnsiString;
property Eof: boolean read FEof;
published
property BufferSize;
end;
TShutdownMode = (Forced, DenyTransaction, DenyAttachment);
TpFIBConfigService = class(TpFIBControlService)
private
FDatabaseName: string;
procedure SetDatabaseName(const Value: string);
protected
public
procedure ServiceStart; override;
procedure ShutdownDatabase (Options: TShutdownMode; Wait: Integer);
procedure SetSweepInterval (Value: Integer);
procedure SetDBSqlDialect (Value: Integer);
procedure SetPageBuffers (Value: Integer);
procedure ActivateShadow;
procedure BringDatabaseOnline;
procedure SetReserveSpace (Value: Boolean);
procedure SetAsyncMode (Value: Boolean);
procedure SetReadOnly (Value: Boolean);
published
property DatabaseName: string read FDatabaseName write SetDatabaseName;
end;
TLicensingAction = (LicenseAdd, LicenseRemove);
TpFIBLicensingService = class(TpFIBControlService)
private
FID: String;
FKey: String;
FAction: TLicensingAction;
procedure SetAction(Value: TLicensingAction);
protected
procedure SetServiceStartOptions; override;
public
procedure AddLicense;
procedure RemoveLicense;
published
property Action: TLicensingAction read FAction write SetAction default LicenseAdd;
property Key: String read FKey write FKey;
property ID: String read FID write FID;
end;
TpFIBLogService = class(TpFIBControlAndQueryService)
private
protected
procedure SetServiceStartOptions; override;
public
published
property OnTextNotify;
end;
TStatOption = (DataPages, DbLog, HeaderPages, IndexPages, SystemRelations,
RecordVersions, StatTables);
TStatOptions = set of TStatOption;
TpFIBStatisticalService = class(TpFIBControlAndQueryService)
private
FDatabaseName : string;
FOptions : TStatOptions;
FTableNames : String;
procedure SetDatabaseName(const Value: string);
protected
procedure SetServiceStartOptions; override;
public
published
property DatabaseName: string read FDatabaseName write SetDatabaseName;
property Options : TStatOptions read FOptions write FOptions;
property TableNames : String read FTableNames write FTableNames;
property OnTextNotify;
end;
TpFIBBackupRestoreService = class(TpFIBControlAndQueryService)
private
FVerbose: Boolean;
protected
public
published
property Verbose : Boolean read FVerbose write FVerbose default False;
property OnTextNotify;
end;
TBackupOption = (IgnoreChecksums, IgnoreLimbo, MetadataOnly, NoGarbageCollection,
OldMetadataDesc, NonTransportable, ConvertExtTables);
TBackupOptions = set of TBackupOption;
TpFIBBackupService = class (TpFIBBackupRestoreService)
private
FDatabaseName: string;
FOptions: TBackupOptions;
FBackupFile: TStrings;
FBlockingFactor: Integer;
procedure SetBackupFile(const Value: TStrings);
protected
procedure SetServiceStartOptions; override;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
published
{ a name=value pair of filename and length }
property BackupFile: TStrings read FBackupFile write SetBackupFile;
property BlockingFactor: Integer read FBlockingFactor write FBlockingFactor;
property DatabaseName: string read FDatabaseName write FDatabaseName;
property Options : TBackupOptions read FOptions write FOptions;
end;
TRestoreOption = (DeactivateIndexes, NoShadow, NoValidityCheck, OneRelationAtATime,
Replace, CreateNewDB, UseAllSpace, ValidationCheck, OnlyMetadata,
FixFssMetadata,FixFssData
);
TRestoreOptions = set of TRestoreOption;
TpFIBRestoreService = class (TpFIBBackupRestoreService)
private
FDatabaseName: TStrings;
FBackupFile: TStrings;
FOptions: TRestoreOptions;
FPageSize: Integer;
FPageBuffers: Integer;
FFixCharset :Ansistring;
procedure SetBackupFile(const Value: TStrings);
procedure SetDatabaseName(const Value: TStrings);
protected
procedure SetServiceStartOptions; override;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
published
{ a name=value pair of filename and length }
property DatabaseName: TStrings read FDatabaseName write SetDatabaseName;
property BackupFile: TStrings read FBackupFile write SetBackupFile;
property PageSize: Integer read FPageSize write FPageSize default 4096;
property PageBuffers: Integer read FPageBuffers write FPageBuffers;
property FixCharset :Ansistring read FFixCharset write FFixCharset;
property Options : TRestoreOptions read FOptions write FOptions default [CreateNewDB];
end;
// Firebird 2.5 only
TpFIBNBackupService = class (TpFIBControlAndQueryService)
private
FDatabaseName: String;
FLevel: Integer;
FBackupFile: string;
protected
procedure SetServiceStartOptions; override;
public
constructor Create(AOwner: TComponent); override;
procedure BackUp(const DBName, BackupName:string; aLevel:integer);
published
property BackupFile: string read FBackupFile write FBackupFile;
property DatabaseName: String read FDatabaseName write FDatabaseName;
property Level: Integer read FLevel write FLevel default 0;
end;
// Firebird 2.5 only
TpFIBNRestoreService = class (TpFIBControlAndQueryService)
private
FDatabaseName: string;
FBackupFiles: TStrings;
procedure SetBackupFiles(const Value: TStrings);
protected
procedure SetServiceStartOptions; override;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure Restore(const aBackUpFiles: array of string; const DBName:string);
published
property BackupFiles: TStrings read FBackupFiles write SetBackupFiles;
property DatabaseName: String read FDatabaseName write FDatabaseName;
end;
TValidateOption = (LimboTransactions, CheckDB, IgnoreChecksum, KillShadows, MendDB,
SweepDB, ValidateDB, ValidateFull);
TValidateOptions = set of TValidateOption;
TTransactionGlobalAction = (CommitGlobal, RollbackGlobal, RecoverTwoPhaseGlobal,
NoGlobalAction);
TTransactionState = (LimboState, CommitState, RollbackState, UnknownState);
TTransactionAdvise = (CommitAdvise, RollbackAdvise, UnknownAdvise);
TServiceTransactionAction = (CommitAction, RollbackAction);
TLimboTransactionInfo = class
public
MultiDatabase: Boolean;
ID: Integer;
HostSite: String;
RemoteSite: String;
RemoteDatabasePath: String;
State: TTransactionState;
Advise: TTransactionAdvise;
Action: TServiceTransactionAction;
end;
TpFIBValidationService = class(TpFIBControlAndQueryService)
private
FDatabaseName: string;
FOptions: TValidateOptions;
FLimboTransactionInfo: array of TLimboTransactionInfo;
FGlobalAction: TTransactionGlobalAction;
procedure SetDatabaseName(const Value: string);
function GetLimboTransactionInfo(index: integer): TLimboTransactionInfo;
function GetLimboTransactionInfoCount: integer;
protected
procedure SetServiceStartOptions; override;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure FetchLimboTransactionInfo;
procedure FixLimboTransactionErrors;
property LimboTransactionInfo[Index: integer]: TLimboTransactionInfo read GetLimboTransactionInfo;
property LimboTransactionInfoCount: Integer read GetLimboTransactionInfoCount;
published
property DatabaseName: string read FDatabaseName write SetDatabaseName;
property Options: TValidateOptions read FOptions write FOptions;
property GlobalAction: TTransactionGlobalAction read FGlobalAction
write FGlobalAction;
property OnTextNotify;
end;
TUserInfo = class
public
UserName: string;
FirstName: string;
MiddleName: string;
LastName: string;
GroupID: Integer;
UserID: Integer;
end;
TSecurityAction = (ActionAddUser, ActionDeleteUser, ActionModifyUser, ActionDisplayUser);
TSecurityModifyParam = (ModifyFirstName, ModifyMiddleName, ModifyLastName, ModifyUserId,
ModifyGroupId, ModifyPassword,ModifySecAdmin);
TSecurityModifyParams = set of TSecurityModifyParam;
TpFIBSecurityService = class(TpFIBControlAndQueryService)
private
FUserID: Integer;
FGroupID: Integer;
FSecAdmin:boolean;
FFirstName: string;
FUserName: string;
FPassword: string;
FSQLRole: string;
FLastName: string;
FMiddleName: string;
FUserInfo: array of TUserInfo;
FSecurityAction: TSecurityAction;
FModifyParams: TSecurityModifyParams;
procedure ClearParams;
procedure SetSecurityAction (Value: TSecurityAction);
procedure SetFirstName (Value: String);
procedure SetMiddleName (Value: String);
procedure SetLastName (Value: String);
procedure SetPassword (Value: String);
procedure SetUserId (Value: Integer);
procedure SetGroupId (Value: Integer);
procedure SetSecAdmin(Value:boolean);
procedure FetchUserInfo;
function GetUserInfo(Index: Integer): TUserInfo;
function GetUserInfoCount: Integer;
protected
procedure Loaded; override;
procedure SetServiceStartOptions; override;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure DisplayUsers;
procedure DisplayUser(UserName: string);
procedure AddUser;
procedure DeleteUser;
procedure ModifyUser;
property UserInfo[Index: Integer]: TUserInfo read GetUserInfo;
property UserInfoCount: Integer read GetUserInfoCount;
published
property SecurityAction: TSecurityAction read FSecurityAction
write SetSecurityAction;
property SQlRole : string read FSQLRole write FSQLrole;
property UserName : string read FUserName write FUserName;
property FirstName : string read FFirstName write SetFirstName;
property MiddleName : string read FMiddleName write SetMiddleName;
property LastName : string read FLastName write SetLastName;
property UserID : Integer read FUserID write SetUserID;
property GroupID : Integer read FGroupID write SetGroupID;
property Password : string read FPassword write SetPassword;
property SecAdmin:boolean read FSecAdmin write SetSecAdmin default False;
end;
{$ENDIF}
implementation
{$IFDEF INC_SERVICE_SUPPORT}
uses
StrUtil,
{$IFNDEF NO_MONITOR}
FIBSQLMonitor,
{$ENDIF}
fib;
{ TpFIBCustomService }
procedure TpFIBCustomService.Attach;
var
SPB: AnsiString;
ConnectString: AnsiString;
begin
CheckInactive;
CheckServerName;
if FLoginPrompt and not Login then
FIBError(feOperationCancelled, [nil]);
{ Generate a new SPB if necessary }
if FParamsChanged then
begin
FParamsChanged := False;
GenerateSPB(FParams, SPB, FSPBLength);
FIBAlloc(FSPB, 0, FsPBLength);
Move(SPB[1], FSPB[0], FSPBLength);
end;
case FProtocol of
TCP: ConnectString := FServerName + ':service_mgr'; {do not localize}
SPX: ConnectString := FServerName + '@service_mgr'; {do not localize}
NamedPipe: ConnectString := '\\' + FServerName + '\service_mgr'; {do not localize}
Local: ConnectString := 'service_mgr'; {do not localize}
end;
LoadLibrary;
if Call(FClientLibrary.isc_service_attach(StatusVector, Length(ConnectString),
PAnsiChar(ConnectString), @FHandle,
FSPBLength, FSPB), False) > 0 then
begin
FHandle := nil;
IBError(FClientLibrary, Self);
end;
if Assigned(FOnAttach) then
FOnAttach(Self);
{$IFNDEF NO_MONITOR}
MonitorHook.ServiceAttach(Self);
{$ENDIF}
end;
procedure TpFIBCustomService.Loaded;
begin
inherited Loaded;
try
if FStreamedActive and (not Active) then
Attach;
except
on E:Exception do
if csDesigning in ComponentState then
begin
ShowException(E,nil);
end
else
raise;
end;
end;
function TpFIBCustomService.Login: Boolean;
var
IndexOfUser, IndexOfPassword, IndexOfRole: Integer;
Username, Password, RoleName: String;
LoginParams: TStrings;
begin
if Assigned(FOnLogin) then begin
result := True;
LoginParams := TStringList.Create;
try
LoginParams.Assign(Params);
FOnLogin(Self, LoginParams);
Params.Assign (LoginParams);
finally
LoginParams.Free;
end;
end
else
begin
IndexOfUser := IndexOfSPBConst(SPBConstantNames[isc_spb_user_name]);
if IndexOfUser <> -1 then
Username := Copy(Params[IndexOfUser],
Pos('=', Params[IndexOfUser]) + 1, {mbcs ok}
Length(Params[IndexOfUser]));
IndexOfPassword := IndexOfSPBConst(SPBConstantNames[isc_spb_password]);
if IndexOfPassword <> -1 then
Password := Copy(Params[IndexOfPassword],
Pos('=', Params[IndexOfPassword]) + 1, {mbcs ok}
Length(Params[IndexOfPassword]));
IndexOfRole:= IndexOfSPBConst(SPBConstantNames[isc_spb_sql_role_name]);
if IndexOfRole<>-1 then
RoleName := Copy(Params[IndexOfRole],
Pos('=', Params[IndexOfRole]) + 1,
Length(Params[IndexOfRole]));
// if Assigned(LoginDialogExProc) then
// result := LoginDialogExProc(serverName, Username, Password, false)
// else
// Result := false;
if not Assigned(pFIBLoginDialog) then
Result := False
else
Result := pFIBLoginDialog(ServerName, Username, Password,RoleName);
if result then
begin
IndexOfPassword := IndexOfSPBConst(SPBConstantNames[isc_spb_password]);
if IndexOfUser = -1 then
Params.Add(SPBConstantNames[isc_spb_user_name] + '=' + Username)
else
Params[IndexOfUser] := SPBConstantNames[isc_spb_user_name] +
'=' + Username;
if IndexOfPassword = -1 then
Params.Add(SPBConstantNames[isc_spb_password] + '=' + Password)
else
Params[IndexOfPassword] := SPBConstantNames[isc_spb_password] +
'=' + Password;
if IndexOfRole=-1 then
Params.Add(SPBConstantNames[isc_spb_sql_role_name] + '=' + RoleName)
else
Params[IndexOfRole] := SPBConstantNames[isc_spb_sql_role_name] +
'=' + RoleName;
end;
end;
end;
procedure TpFIBCustomService.CheckActive;
begin
if FStreamedActive and (not Active) then
Loaded;
if FHandle = nil then
FIBError(feServiceActive, [nil]);
end;
procedure TpFIBCustomService.CheckInactive;
begin
if FHandle <> nil then
FIBError(feServiceInActive, [nil]);
end;
constructor TpFIBCustomService.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FLibraryName := IBASE_DLL;
// FGDSLibrary := GetGDSLibrary;
FIBLoaded := False;
// FGDSLibrary.CheckIBLoaded;
FIBLoaded := True;
FProtocol := local;
FserverName := '';
FParams := TStringList.Create;
FParamsChanged := True;
TStringList(FParams).OnChange := ParamsChange;
TStringList(FParams).OnChanging := ParamsChanging;
FSPB := nil;
FQuerySPB := nil;
FBufferSize := DefaultBufferSize;
FHandle := nil;
FLoginPrompt := True;
// FTraceFlags := [];
FOutputbuffer := nil;
// FGDSLibrary := GetGDSLibrary;
end;
destructor TpFIBCustomService.Destroy;
begin
if FIBLoaded and Assigned(FClientLibrary) then
begin
if FHandle <> nil then
Detach;
FreeMem(FSPB);
FSPB := nil;
end;
FreeMem(FOutputBuffer);
FParams.Free;
FClientLibrary:=nil;
// FGDSLibrary := nil;
inherited Destroy;
end;
procedure TpFIBCustomService.Detach;
begin
CheckActive;
LoadLibrary;
if (Call(FClientLibrary.isc_service_detach(StatusVector, @FHandle), False) > 0) then
begin
FHandle := nil;
IBError(FClientLibrary, Self);
end
else
FHandle := nil;
{$IFNDEF NO_MONITOR}
MonitorHook.ServiceDetach(Self);
{$ENDIF}
end;
procedure TpFIBCustomService.LoadLibrary;
begin
if not Assigned(FClientLibrary) then
FClientLibrary := IB_Intf.GetClientLibrary(FLibraryName);
end;
function TpFIBCustomService.GetActive: Boolean;
begin
result := FHandle <> nil;
end;
function TpFIBCustomService.GetServiceParamBySPB(const Idx: Integer): String;
var
ConstIdx, EqualsIdx: Integer;
begin
if (Idx > 0) and (Idx <= isc_spb_last_spb_constant) then
begin
ConstIdx := IndexOfSPBConst(SPBConstantNames[Idx]);
if ConstIdx = -1 then
result := ''
else
begin
result := Params[ConstIdx];
EqualsIdx := Pos('=', result); {mbcs ok}
if EqualsIdx = 0 then
result := ''
else
result := Copy(result, EqualsIdx + 1, Length(result));
end;
end
else
result := '';
end;
procedure TpFIBCustomService.InternalServiceQuery;
begin
FQuerySPBLength := Length(FQueryParams);
if FQuerySPBLength = 0 then
FIBError(feQueryParamsError, [nil]);
FIBAlloc(FQuerySPB, 0, FQuerySPBLength);
Move(FQueryParams[1], FQuerySPB[0], FQuerySPBLength);
if (FOutputBuffer = nil) then
FIBAlloc(FOutputBuffer, 0, FBufferSize);
try
LoadLibrary;
if call(FClientLibrary.isc_service_query(StatusVector, @FHandle, nil, 0, nil,
FQuerySPBLength, FQuerySPB,
FBufferSize, FOutputBuffer), False) > 0 then
begin
FHandle := nil;
IBError(FClientLibrary, Self);
end;
finally
FreeMem(FQuerySPB);
FQuerySPB := nil;
FQuerySPBLength := 0;
FQueryParams := '';
end;
{$IFNDEF NO_MONITOR}
MonitorHook.ServiceQuery(Self);
{$ENDIF}
end;
procedure TpFIBCustomService.SetActive(const Value: Boolean);
begin
if csReading in ComponentState then
FStreamedActive := Value
else
if Value <> Active then
if Value then
Attach
else
Detach;
end;
procedure TpFIBCustomService.SetBufferSize(const Value: Integer);
begin
if (Value <> FBufferSize) then
begin
FBufferSize := Value;
if FOutputBuffer <> nil then
FIBAlloc(FOutputBuffer, 0, FBufferSize);
end;
end;
procedure TpFIBCustomService.SetParams(const Value: TStrings);
begin
FParams.Assign(Value);
end;
procedure TpFIBCustomService.SetServerName(const Value: AnsiString);
begin
if FServerName <> Value then
begin
CheckInactive;
FServerName := Value;
if (FProtocol = Local) and (FServerName <> '') then
FProtocol := TCP
else
if (FProtocol <> Local) and (FServerName = '') then
FProtocol := Local;
end;
end;
procedure TpFIBCustomService.SetProtocol(const Value: TProtocol);
begin
if FProtocol <> Value then
begin
CheckInactive;
FProtocol := Value;
if (Value = Local) then
FServerName := '';
end;
end;
procedure TpFIBCustomService.SetServiceParamBySPB(const Idx: Integer;
const Value: String);
var
ConstIdx: Integer;
begin
ConstIdx := IndexOfSPBConst(SPBConstantNames[Idx]);
if (Value = '') then
begin
if ConstIdx <> -1 then
Params.Delete(ConstIdx);
end
else
begin
if (ConstIdx = -1) then
Params.Add(SPBConstantNames[Idx] + '=' + Value)
else
Params[ConstIdx] := SPBConstantNames[Idx] + '=' + Value;
end;
end;
function TpFIBCustomService.IndexOfSPBConst(st: String): Integer;
var
i, pos_of_str: Integer;
begin
result := -1;
for i := 0 to Params.Count - 1 do
begin
pos_of_str := Pos(st, Params[i]); {mbcs ok}
if (pos_of_str = 1) or (pos_of_str = Length(SPBPrefix) + 1) then
begin
result := i;
break;
end;
end;
end;
procedure TpFIBCustomService.ParamsChange(Sender: TObject);
begin
FParamsChanged := True;
end;
procedure TpFIBCustomService.ParamsChanging(Sender: TObject);
begin
CheckInactive;
end;
procedure TpFIBCustomService.CheckServerName;
begin
if (FServerName = '') and (FProtocol <> Local) then
FIBError(feServerNameMissing, [nil]);
end;
function TpFIBCustomService.Call(ErrCode: ISC_STATUS;
RaiseError: Boolean): ISC_STATUS;
begin
result := ErrCode;
if RaiseError and (ErrCode > 0) then
IBError(FClientLibrary, Self);
end;
function TpFIBCustomService.ParseString(var RunLen: Integer): Ansistring;
var
Len: UShort;
tmp: AnsiChar;
begin
LoadLibrary;
Len := FClientLibrary.isc_vax_integer(OutputBuffer + RunLen, 2);
RunLen := RunLen + 2;
if (Len <> 0) then
begin
tmp := OutputBuffer[RunLen + Len];
OutputBuffer[RunLen + Len] := #0;
result := AnsiString(PAnsiChar(@OutputBuffer[RunLen]));
OutputBuffer[RunLen + Len] := tmp;
RunLen := RunLen + Len;
end
else
result := '';
end;
function TpFIBCustomService.ParseInteger(var RunLen: Integer): Integer;
begin
LoadLibrary;
Result := FClientLibrary.isc_vax_integer(OutputBuffer + RunLen, 4);
RunLen := RunLen + 4;
end;
{
* GenerateSPB -
* Given a string containing a textual representation
* of the Service parameters, generate a service
* parameter buffer, and return it and its length
* in SPB and SPBLength, respectively.
}
procedure TpFIBCustomService.GenerateSPB(sl: TStrings; var SPB: AnsiString;
var SPBLength: Short);
var
i, j : Integer;
SPBVal, SPBServerVal: UShort;
param_name, param_value: String;
pval: Integer;
begin
{ The SPB is initially empty, with the exception that
the SPB version must be the first byte of the string.
}
SPBLength := 2;