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root/public/ibx/trunk/runtime/IBIntf.pas
Revision: 27
Committed: Tue Apr 14 13:10:23 2015 UTC (9 years ago) by tony
Content type: text/x-pascal
File size: 22180 byte(s)
Log Message:
Committing updates for Release R1-2-3

File Contents

# Content
1 {************************************************************************}
2 { }
3 { Borland Delphi Visual Component Library }
4 { InterBase Express core components }
5 { }
6 { Copyright (c) 1998-2000 Inprise Corporation }
7 { }
8 { InterBase Express is based in part on the product }
9 { Free IB Components, written by Gregory H. Deatz for }
10 { Hoagland, Longo, Moran, Dunst & Doukas Company. }
11 { Free IB Components is used under license. }
12 { }
13 { The contents of this file are subject to the InterBase }
14 { Public License Version 1.0 (the "License"); you may not }
15 { use this file except in compliance with the License. You }
16 { may obtain a copy of the License at http://www.Inprise.com/IPL.html }
17 { Software distributed under the License is distributed on }
18 { an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
19 { express or implied. See the License for the specific language }
20 { governing rights and limitations under the License. }
21 { The Original Code was created by InterBase Software Corporation }
22 { and its successors. }
23 { Portions created by Inprise Corporation are Copyright (C) Inprise }
24 { Corporation. All Rights Reserved. }
25 { Contributor(s): Jeff Overcash }
26 { }
27 { IBX For Lazarus (Firebird Express) }
28 { Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
29 { Portions created by MWA Software are copyright McCallum Whyman }
30 { Associates Ltd 2011 }
31 { }
32 {************************************************************************}
33
34 unit IBIntf;
35
36 {$Mode Delphi}
37
38 interface
39
40 uses
41 {$IFDEF WINDOWS }
42 Windows,
43 {$ELSE}
44 unix,
45 {$ENDIF}
46 IBHeader,IBExternals;
47
48 var
49 BLOB_get: TBLOB_get;
50 BLOB_put: TBLOB_put;
51 isc_sqlcode: Tisc_sqlcode;
52 isc_sql_interprete: Tisc_sql_interprete;
53 isc_interprete: Tisc_interprete;
54 isc_vax_integer: Tisc_vax_integer;
55 isc_portable_integer: Tisc_portable_integer;
56 isc_blob_info: Tisc_blob_info;
57 isc_open_blob2: Tisc_open_blob2;
58 isc_close_blob: Tisc_close_blob;
59 isc_get_segment: Tisc_get_segment;
60 isc_put_segment: Tisc_put_segment;
61 isc_create_blob2: Tisc_create_blob2;
62 isc_service_attach: Tisc_service_attach;
63 isc_service_detach: Tisc_service_detach;
64 isc_service_query: Tisc_service_query;
65 isc_service_start: Tisc_service_start;
66 isc_decode_date: Tisc_decode_date;
67 isc_decode_sql_date: Tisc_decode_sql_date;
68 isc_decode_sql_time: Tisc_decode_sql_time;
69 isc_decode_timestamp: Tisc_decode_timestamp;
70 isc_encode_date: Tisc_encode_date;
71 isc_encode_sql_date: Tisc_encode_sql_date;
72 isc_encode_sql_time: Tisc_encode_sql_time;
73 isc_encode_timestamp: Tisc_encode_timestamp;
74 isc_dsql_free_statement: Tisc_dsql_free_statement;
75 isc_dsql_execute2: Tisc_dsql_execute2;
76 isc_dsql_execute: Tisc_dsql_execute;
77 isc_dsql_set_cursor_name: Tisc_dsql_set_cursor_name;
78 isc_dsql_fetch: Tisc_dsql_fetch;
79 isc_dsql_sql_info: Tisc_dsql_sql_info;
80 isc_dsql_alloc_statement2: Tisc_dsql_alloc_statement2;
81 isc_dsql_prepare: Tisc_dsql_prepare;
82 isc_dsql_describe_bind: Tisc_dsql_describe_bind;
83 isc_dsql_describe: Tisc_dsql_describe;
84 isc_dsql_execute_immediate: Tisc_dsql_execute_immediate;
85 isc_drop_database: Tisc_drop_database;
86 isc_detach_database: Tisc_detach_database;
87 isc_attach_database: Tisc_attach_database;
88 isc_database_info: Tisc_database_info;
89 isc_start_multiple: Tisc_start_multiple;
90 isc_commit_transaction: Tisc_commit_transaction;
91 isc_commit_retaining: Tisc_commit_retaining;
92 isc_rollback_transaction: Tisc_rollback_transaction;
93 isc_rollback_retaining: Tisc_rollback_retaining;
94 isc_cancel_events: Tisc_cancel_events;
95 isc_que_events: Tisc_que_events;
96 isc_event_counts: Tisc_event_counts;
97 isc_event_block: Tisc_event_block;
98 isc_free: Tisc_free;
99 isc_add_user : Tisc_add_user;
100 isc_delete_user: Tisc_delete_user;
101 isc_modify_user: Tisc_modify_user;
102
103
104 { Library Initialization }
105 procedure LoadIBLibrary;
106 procedure FreeIBLibrary;
107 function TryIBLoad: Boolean;
108 procedure CheckIBLoaded;
109
110 { Stubs for 6.0 only functions }
111 function isc_rollback_retaining_stub(status_vector : PISC_STATUS;
112 tran_handle : PISC_TR_HANDLE):
113 ISC_STATUS; {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
114 function isc_service_attach_stub(status_vector : PISC_STATUS;
115 isc_arg2 : UShort;
116 isc_arg3 : PChar;
117 service_handle : PISC_SVC_HANDLE;
118 isc_arg5 : UShort;
119 isc_arg6 : PChar):
120 ISC_STATUS; {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
121 function isc_service_detach_stub(status_vector : PISC_STATUS;
122 service_handle : PISC_SVC_HANDLE):
123 ISC_STATUS; {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
124 function isc_service_query_stub(status_vector : PISC_STATUS;
125 service_handle : PISC_SVC_HANDLE;
126 recv_handle : PISC_SVC_HANDLE;
127 isc_arg4 : UShort;
128 isc_arg5 : PChar;
129 isc_arg6 : UShort;
130 isc_arg7 : PChar;
131 isc_arg8 : UShort;
132 isc_arg9 : PChar):
133 ISC_STATUS; {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
134 function isc_service_start_stub(status_vector : PISC_STATUS;
135 service_handle : PISC_SVC_HANDLE;
136 recv_handle : PISC_SVC_HANDLE;
137 isc_arg4 : UShort;
138 isc_arg5 : PChar):
139 ISC_STATUS; {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
140
141 procedure isc_encode_sql_date_stub(tm_date : PCTimeStructure;
142 ib_date : PISC_DATE);
143 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
144
145 procedure isc_encode_sql_time_stub(tm_date : PCTimeStructure;
146 ib_time : PISC_TIME);
147 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
148
149 procedure isc_encode_timestamp_stub(tm_date : PCTimeStructure;
150 ib_timestamp : PISC_TIMESTAMP);
151 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
152
153 procedure isc_decode_sql_date_stub(ib_date : PISC_DATE;
154 tm_date : PCTimeStructure);
155 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
156
157 procedure isc_decode_sql_time_stub(ib_time : PISC_TIME;
158 tm_date : PCTimeStructure);
159 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
160
161 procedure isc_decode_timestamp_stub(ib_timestamp : PISC_TIMESTAMP;
162 tm_date : PCTimeStructure);
163 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
164
165
166 var IBServiceAPIPresent: boolean;
167
168 type
169 TOnGetLibraryName = procedure(var libname: string);
170
171 const
172 OnGetLibraryName: TOnGetLibraryName = nil;
173
174
175 implementation
176
177 uses Sysutils, IB, Dynlibs, Classes
178 {$IFDEF WINDOWS}
179 ,Forms, Registry
180 {$ENDIF}
181 ;
182
183 var
184 IBLibrary: TLibHandle;
185
186 procedure LoadIBLibrary;
187
188 function GetProcAddr(ProcName: PChar): Pointer;
189 begin
190 Result := GetProcAddress(IBLibrary, ProcName);
191 if not Assigned(Result) then
192 raise Exception.Create('Unable to load Firebird Client Library');
193 end;
194 {$IFDEF UNIX }
195 function FindLibrary(LibNameList: string): TLibHandle;
196 var LibNames: TStringList;
197 i: integer;
198 begin
199 Result := NilHandle;
200 LibNames := TStringList.Create;
201 try
202 LibNames.Delimiter := ':';
203 LibNames.StrictDelimiter := true;
204 LibNames.DelimitedText := LibNameList; {Split list on semi-colon}
205 for i := 0 to LibNames.Count - 1 do
206 begin
207 Result := LoadLibrary(LibNames[i]);
208 if Result <> NilHandle then Exit;
209 end;
210 finally
211 LibNames.Free;
212 end;
213 end;
214
215 function InternalLoadLibrary: TLibHandle;
216 var LibName: string;
217 begin
218 //Use default unless FBLIB overrides
219 LibName := GetEnvironmentVariable('FBLIB');
220 if LibName = '' then
221 begin
222 if assigned(OnGetLibraryName) then
223 OnGetLibraryName(LibName)
224 else
225 LibName := FIREBIRD_SO2;
226 end;
227 Result := FindLibrary(LibName);
228 {$IFDEF DARWIN}
229 if Result = NilHandle then
230 begin
231 {See http://paulbeachsblog.blogspot.co.uk/2008/03/where-is-libfbclientdylib-on-macosx.html
232 Try loading direct from Firebird Framework}
233
234 LibName := '/Library/Frameworks/Firebird.framework/Firebird';
235 Result := LoadLibrary(LibName);
236 end
237 {$ENDIF}
238 end;
239 {$ENDIF}
240 {$IFDEF WINDOWS}
241 function InternalLoadLibrary: TLibHandle;
242 var InstallDir: string;
243 dllPathName: string;
244 begin
245 if assigned(OnGetLibraryName) then
246 begin
247 OnGetLibraryName(dllPathName);
248 Result := LoadLibrary(dllPathName);
249 Exit
250 end;
251
252 //First look for Firebird Embedded Server in installation dir
253 InstallDir := ExtractFilePath(Application.ExeName);
254 if FileExists(InstallDir + FIREBIRD_EMBEDDED) then
255 begin
256 dllPathName := InstallDir + FIREBIRD_EMBEDDED;
257 Result := LoadLibrary(dllPathName)
258 end
259 else
260 //Otherwise look for Firebird Client in installation dir
261 if FileExists(InstallDir + FIREBIRD_CLIENT) then
262 begin
263 //assume firebird.conf and firebird.msg in same dir
264 SetEnvironmentVariable('FIREBIRD',PChar(InstallDir));
265 dllPathName := InstallDir +FIREBIRD_CLIENT;
266 Result := LoadLibrary(dllPathName)
267 end
268 else
269 //Use Registry key if it exists to locate library
270 begin
271 with TRegistry.Create do
272 try
273 RootKey := HKEY_LOCAL_MACHINE;
274 if OpenKey('SOFTWARE\Firebird Project\Firebird Server\Instances',false) then
275 begin
276 if ValueExists('DefaultInstance') then
277 begin
278 dllPathName := ReadString('DefaultInstance') + 'bin' + DirectorySeparator + FIREBIRD_CLIENT;
279 if FileExists(dllPathName) then
280 begin
281 Result := LoadLibrary(dllPathName);
282 Exit
283 end
284 end
285 end
286 finally
287 Free
288 end;
289
290 //Otherwise see if Firebird client is in path
291 //and rely on registry for location of firebird.conf and firebird.msg
292 Result := LoadLibrary(FIREBIRD_CLIENT);
293 if Result <= HINSTANCE_ERROR then
294 //well maybe InterBase is present...
295 Result := LoadLibrary(IBASE_DLL);
296 end
297 end;
298 {$ENDIF}
299
300 begin
301 IBLibrary := InternalLoadLibrary;
302 if (IBLibrary <> NilHandle) then
303 begin
304 BLOB_get := GetProcAddr('BLOB_get'); {do not localize}
305 BLOB_put := GetProcAddr('BLOB_put'); {do not localize}
306 isc_sqlcode := GetProcAddr('isc_sqlcode'); {do not localize}
307 isc_sql_interprete := GetProcAddr('isc_sql_interprete'); {do not localize}
308 isc_interprete := GetProcAddr('isc_interprete'); {do not localize}
309 isc_vax_integer := GetProcAddr('isc_vax_integer'); {do not localize}
310 isc_portable_integer := GetProcAddr('isc_portable_integer'); {do not localize}
311 isc_blob_info := GetProcAddr('isc_blob_info'); {do not localize}
312 isc_open_blob2 := GetProcAddr('isc_open_blob2'); {do not localize}
313 isc_close_blob := GetProcAddr('isc_close_blob'); {do not localize}
314 isc_get_segment := GetProcAddr('isc_get_segment'); {do not localize}
315 isc_put_segment := GetProcAddr('isc_put_segment'); {do not localize}
316 isc_create_blob2 := GetProcAddr('isc_create_blob2'); {do not localize}
317 isc_decode_date := GetProcAddr('isc_decode_date'); {do not localize}
318 isc_encode_date := GetProcAddr('isc_encode_date'); {do not localize}
319 isc_dsql_free_statement := GetProcAddr('isc_dsql_free_statement'); {do not localize}
320 isc_dsql_execute2 := GetProcAddr('isc_dsql_execute2'); {do not localize}
321 isc_dsql_execute := GetProcAddr('isc_dsql_execute'); {do not localize}
322 isc_dsql_set_cursor_name := GetProcAddr('isc_dsql_set_cursor_name'); {do not localize}
323 isc_dsql_fetch := GetProcAddr('isc_dsql_fetch'); {do not localize}
324 isc_dsql_sql_info := GetProcAddr('isc_dsql_sql_info'); {do not localize}
325 isc_dsql_alloc_statement2 := GetProcAddr('isc_dsql_alloc_statement2'); {do not localize}
326 isc_dsql_prepare := GetProcAddr('isc_dsql_prepare'); {do not localize}
327 isc_dsql_describe_bind := GetProcAddr('isc_dsql_describe_bind'); {do not localize}
328 isc_dsql_describe := GetProcAddr('isc_dsql_describe'); {do not localize}
329 isc_dsql_execute_immediate := GetProcAddr('isc_dsql_execute_immediate'); {do not localize}
330 isc_drop_database := GetProcAddr('isc_drop_database'); {do not localize}
331 isc_detach_database := GetProcAddr('isc_detach_database'); {do not localize}
332 isc_attach_database := GetProcAddr('isc_attach_database'); {do not localize}
333 isc_database_info := GetProcAddr('isc_database_info'); {do not localize}
334 isc_start_multiple := GetProcAddr('isc_start_multiple'); {do not localize}
335 isc_commit_transaction := GetProcAddr('isc_commit_transaction'); {do not localize}
336 isc_commit_retaining := GetProcAddr('isc_commit_retaining'); {do not localize}
337 isc_rollback_transaction := GetProcAddr('isc_rollback_transaction'); {do not localize}
338 isc_cancel_events := GetProcAddr('isc_cancel_events'); {do not localize}
339 isc_que_events := GetProcAddr('isc_que_events'); {do not localize}
340 isc_event_counts := GetProcAddr('isc_event_counts'); {do not localize}
341 isc_event_block := GetProcAddr('isc_event_block'); {do not localize}
342 isc_free := GetProcAddr('isc_free'); {do not localize}
343 isc_add_user := GetProcAddr('isc_add_user'); {do not localize}
344 isc_delete_user := GetProcAddr('isc_delete_user'); {do not localize}
345 isc_modify_user := GetProcAddr('isc_modify_user'); {do not localize}
346
347 IBServiceAPIPresent := true;
348 isc_rollback_retaining := GetProcAddress(IBLibrary, 'isc_rollback_retaining'); {do not localize}
349 if Assigned(isc_rollback_retaining) then
350 begin
351 isc_service_attach := GetProcAddr('isc_service_attach'); {do not localize}
352 isc_service_detach := GetProcAddr('isc_service_detach'); {do not localize}
353 isc_service_query := GetProcAddr('isc_service_query'); {do not localize}
354 isc_service_start := GetProcAddr('isc_service_start'); {do not localize}
355 isc_decode_sql_date := GetProcAddr('isc_decode_sql_date'); {do not localize}
356 isc_decode_sql_time := GetProcAddr('isc_decode_sql_time'); {do not localize}
357 isc_decode_timestamp := GetProcAddr('isc_decode_timestamp'); {do not localize}
358 isc_encode_sql_date := GetProcAddr('isc_encode_sql_date'); {do not localize}
359 isc_encode_sql_time := GetProcAddr('isc_encode_sql_time'); {do not localize}
360 isc_encode_timestamp := GetProcAddr('isc_encode_timestamp'); {do not localize}
361 end else
362 begin
363 IBServiceAPIPresent := false;
364 isc_rollback_retaining := isc_rollback_retaining_stub;
365 isc_service_attach := isc_service_attach_stub;
366 isc_service_detach := isc_service_detach_stub;
367 isc_service_query := isc_service_query_stub;
368 isc_service_start := isc_service_start_stub;
369 isc_decode_sql_date := isc_decode_sql_date_stub;
370 isc_decode_sql_time := isc_decode_sql_time_stub;
371 isc_decode_timestamp := isc_decode_timestamp_stub;
372 isc_encode_sql_date := isc_encode_sql_date_stub;
373 isc_encode_sql_time := isc_encode_sql_time_stub;
374 isc_encode_timestamp := isc_encode_timestamp_stub;
375 end;
376 end;
377 end;
378
379 procedure FreeIBLibrary;
380 begin
381 if IBLibrary <> NilHandle then
382 begin
383 FreeLibrary(IBLibrary);
384 IBLibrary := 0;
385 end;
386 end;
387
388 function TryIBLoad: Boolean;
389 begin
390 if (IBLibrary = NilHandle) then
391 LoadIBLibrary;
392 if (IBLibrary = NilHandle) then
393 result := False
394 else
395 result := True;
396 end;
397
398 procedure CheckIBLoaded;
399 begin
400 if not TryIBLoad then
401 IBError(ibxeInterBaseMissing, [nil]);
402 end;
403
404
405 function isc_rollback_retaining_stub(status_vector : PISC_STATUS;
406 tran_handle : PISC_TR_HANDLE):
407 ISC_STATUS; {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
408 begin
409 Result := 0;
410 IBError(ibxeIB60feature, ['isc_rollback_retaining']); {do not localize}
411 end;
412
413 function isc_service_attach_stub(status_vector : PISC_STATUS;
414 isc_arg2 : UShort;
415 isc_arg3 : PChar;
416 service_handle : PISC_SVC_HANDLE;
417 isc_arg5 : UShort;
418 isc_arg6 : PChar):
419 ISC_STATUS; {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
420 begin
421 Result := 0;
422 IBError(ibxeIB60feature, ['isc_service_attach']); {do not localize}
423 end;
424
425 function isc_service_detach_stub(status_vector : PISC_STATUS;
426 service_handle : PISC_SVC_HANDLE):
427 ISC_STATUS; {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
428 begin
429 Result := 0;
430 IBError(ibxeIB60feature, ['isc_service_detach']); {do not localize}
431 end;
432
433 function isc_service_query_stub(status_vector : PISC_STATUS;
434 service_handle : PISC_SVC_HANDLE;
435 recv_handle : PISC_SVC_HANDLE;
436 isc_arg4 : UShort;
437 isc_arg5 : PChar;
438 isc_arg6 : UShort;
439 isc_arg7 : PChar;
440 isc_arg8 : UShort;
441 isc_arg9 : PChar):
442 ISC_STATUS; {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
443 begin
444 Result := 0;
445 IBError(ibxeIB60feature, ['isc_service_query']); {do not localize}
446 end;
447
448 function isc_service_start_stub(status_vector : PISC_STATUS;
449 service_handle : PISC_SVC_HANDLE;
450 recv_handle : PISC_SVC_HANDLE;
451 isc_arg4 : UShort;
452 isc_arg5 : PChar):
453 ISC_STATUS; {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
454 begin
455 Result := 0;
456 IBError(ibxeIB60feature, ['isc_service_start']); {do not localize}
457 end;
458
459 procedure isc_encode_sql_date_stub(tm_date : PCTimeStructure;
460 ib_date : PISC_DATE);
461 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
462 begin
463 IBError(ibxeIB60feature, ['isc_encode_sql_date']); {do not localize}
464 end;
465
466 procedure isc_encode_sql_time_stub(tm_date : PCTimeStructure;
467 ib_time : PISC_TIME);
468 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
469 begin
470 IBError(ibxeIB60feature, ['isc_encode_sql_time']); {do not localize}
471 end;
472
473 procedure isc_encode_timestamp_stub(tm_date : PCTimeStructure;
474 ib_timestamp : PISC_TIMESTAMP);
475 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
476 begin
477 IBError(ibxeIB60feature, ['isc_encode_sql_timestamp']); {do not localize}
478 end;
479
480 procedure isc_decode_sql_date_stub(ib_date : PISC_DATE;
481 tm_date : PCTimeStructure);
482 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
483 begin
484 IBError(ibxeIB60feature, ['isc_decode_sql_date']); {do not localize}
485 end;
486
487 procedure isc_decode_sql_time_stub(ib_time : PISC_TIME;
488 tm_date : PCTimeStructure);
489 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
490 begin
491 IBError(ibxeIB60feature, ['isc_decode_sql_time']); {do not localize}
492 end;
493
494 procedure isc_decode_timestamp_stub(ib_timestamp : PISC_TIMESTAMP;
495 tm_date : PCTimeStructure);
496 {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
497 begin
498 IBError(ibxeIB60feature, ['isc_decode_timestamp']); {do not localize}
499 end;
500 initialization
501
502 finalization
503 FreeIBLibrary;
504 end.