Skip to main content
aboutsummaryrefslogtreecommitdiffstats
blob: 73a394344b638a81941b2c78b01a965b02e34af1 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at 
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Kevin Cornell (Rational Software Corporation)
 *     Holger Voormann - fix for bug 384950 (http://eclip.se/384950)
 *******************************************************************************/

#include "eclipseOS.h"
#include "eclipseUtil.h"
#include "eclipseCommon.h"
#include "eclipseJNI.h"
#include "eclipseShm.h"

#include <windows.h>
#include <commctrl.h>
#include <process.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>

#ifdef __MINGW32__
#include <stdlib.h>
#endif

extern HWND topWindow;

/* Global Variables */
_TCHAR*  defaultVM     = _T("javaw.exe");
_TCHAR*  consoleVM     = _T("java.exe");
_TCHAR*  vmLibrary 	   = _T("jvm.dll");
_TCHAR*  shippedVMDir  = _T("jre\\bin\\");

/* Define local variables for communicating with running eclipse instance. */
static HANDLE	mutex;
static UINT		findWindowTimeout = 1000;
static UINT_PTR findWindowTimerId = 97;
static UINT		timerCount = 0;
static UINT		openFileTimeout = 60;
static _TCHAR**	openFilePath;

/* Define the window system arguments for the Java VM. */
static _TCHAR*  argVM[] = { NULL };

/* Define local variables for running the JVM and detecting its exit. */
static HANDLE  jvmProcess     = 0;
static JavaResults* jvmResults = NULL;
static UINT    jvmExitTimeout = 100;
static UINT_PTR jvmExitTimerId = 99;

static void CALLBACK findWindowProc(HWND hwnd, UINT message, UINT idTimer, DWORD dwTime);
static void CALLBACK  detectJvmExit( HWND hwnd, UINT uMsg, UINT id, DWORD dwTime );
static _TCHAR* checkVMRegistryKey(HKEY jrekey, _TCHAR* subKeyName);
static void adjustSearchPath( _TCHAR * vmLibrary );
static _TCHAR* findLib( _TCHAR* command );

/* define default locations in which to find the jvm shared library
 * these are paths relative to the java exe, the shared library is
 * for example jvmLocations[0] + dirSeparator + vmLibrary */
#define MAX_LOCATION_LENGTH 25 /* none of the jvmLocations strings should be longer than this */ 
static const _TCHAR* jvmLocations [] = { _T("j9vm"), _T("..\\jre\\bin\\j9vm"),
										 _T("client"), _T("..\\jre\\bin\\client"), 
										 _T("server"), _T("..\\jre\\bin\\server"),
										 _T("classic"), _T("..\\jre\\bin\\classic"),
										 _T("jrockit"), _T("..\\jre\\bin\\jrockit"),
								 		 NULL };

/* for detecting sun vms */
typedef struct {
	WORD language;
	WORD codepage;
} TRANSLATIONS;

#define PRODUCT_VERSION_KEY _T_ECLIPSE("\\StringFileInfo\\%04x%04x\\ProductVersion")

static void sendOpenFileMessage(HWND window) {
	_TCHAR* id;
	UINT msg;
	int index = 0;
	int size = 0;
	DWORD wParam;
#ifdef WIN64
	DWORDLONG lParam;
#else
	DWORD lParam;
#endif

	/* what's the longest path? */
	while (openFilePath[index] != NULL) {
		int length = _tcslen(openFilePath[index++]);
		if (size <= length)
			size = length + 1;
	}

	createSharedData(&id, size * sizeof(_TCHAR));
	_stscanf(id, _T_ECLIPSE("%lx_%lx"), &wParam, &lParam);
	msg = RegisterWindowMessage(_T("SWT_OPENDOC"));

	index = 0;
	for(index = 0; openFilePath[index] != NULL; index++) {
		/* SendMessage does not return until the message has been processed */
		setSharedData(id, openFilePath[index]);
		SendMessage(window, msg, wParam, lParam);
	}
	destroySharedData(id);
	free(id);
	SetForegroundWindow(window);
}

static HWND findSWTMessageWindow() {
	HWND window = NULL;
	_TCHAR *windowTitle, *windowPrefix, *name;

	windowPrefix = _T("SWT_Window_");
	name = getOfficialName();
	windowTitle = malloc((_tcslen(windowPrefix) + _tcslen(name) + 1) * sizeof(_TCHAR));
	_stprintf(windowTitle, _T_ECLIPSE("%s%s"), windowPrefix, name);
	window = FindWindow(NULL, windowTitle);
	free(windowTitle);
	return window;
}

static void CALLBACK findWindowProc(HWND hwnd, UINT message, UINT idTimer, DWORD dwTime) {
	HWND window = findSWTMessageWindow();
	if (window != NULL) {
		sendOpenFileMessage(window);
		ReleaseMutex(mutex);
		CloseHandle(mutex);
		KillTimer(hwnd, findWindowTimerId);
		return;
	}
	
	/* no window yet, set timer to try again later */
	if (timerCount++ >= openFileTimeout) {
		KillTimer(hwnd, findWindowTimerId);
		ReleaseMutex(mutex);
		CloseHandle(mutex);
	}
}

/* return > 0 if we successfully send a message to another eclipse instance */
int reuseWorkbench(_TCHAR** filePath, int timeout) {
	_TCHAR*   mutexPrefix = _T("SWT_Mutex_");
	_TCHAR*   mutexName, *name;
	DWORD 	  lock;
	HWND 	  window = NULL;

	/* store for later */
	openFilePath = filePath;
	openFileTimeout = timeout;
	
	name = getOfficialName();
	mutexName = malloc((_tcslen(mutexPrefix) + _tcslen(name)  + 1) * sizeof(_TCHAR));
	_stprintf(mutexName, _T_ECLIPSE("%s%s"), mutexPrefix, name);
	mutex = CreateMutex(NULL, FALSE, mutexName);
	free(mutexName);
	if (mutex == NULL) return -1;
	
	//wait for timeout seconds
	lock = WaitForSingleObject(mutex, timeout * 1000);
	if (lock != WAIT_OBJECT_0) {
		/* failed to get the lock before timeout, We won't be reusing an existing eclipse. */
		CloseHandle(mutex);
		return 0;
	}
	
	/* we have the mutex, look for the SWT window */
	window = findSWTMessageWindow();
	if (window != NULL) {
		sendOpenFileMessage(window);
		ReleaseMutex(mutex);
		CloseHandle(mutex);
		return 1; /* success! */
	} 
	
	/* no window, set a timer to look again later */
	if (initWindowSystem(0, NULL, 0) == 0)
		SetTimer( topWindow, findWindowTimerId, findWindowTimeout, findWindowProc );
	
	return 0;
}

/* Show the Splash Window
 *
 * Open the bitmap, insert into the splash window and display it.
 *
 */
int showSplash( const _TCHAR* featureImage )
{
	static int splashing = 0;
    HBITMAP hBitmap = 0;
    BITMAP  bmp;
    HDC     hDC;
    int     depth;
    int     x, y;
    int     width, height;
    int     dpiX, scaledWidth, scaledHeight;

	if(splashing) {
		/*splash screen is already showing, do nothing */
		return 0;
	}
	if (featureImage == NULL)
		return -1;
	
	/* if Java was started first and is calling back to show the splash, we might not
	 * have initialized the window system yet
	 */
	initWindowSystem(0, NULL, 1);
	
    /* Load the bitmap for the feature. */
    hDC = GetDC( NULL);
    depth = GetDeviceCaps( hDC, BITSPIXEL ) * GetDeviceCaps( hDC, PLANES);

    /* fetch screen DPI and round it to 100% multiples, 
    this implementation needs to be kept in sync with org.eclipse.swt.internal.DPIUtil#setDeviceZoom(int) */
	dpiX = GetDeviceCaps ( hDC, LOGPIXELSX );
	dpiX = ((int)((dpiX + 24) / 96 )) * 96;

    ReleaseDC(NULL, hDC);
    if (featureImage != NULL)
    	hBitmap = LoadImage(NULL, featureImage, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);

    /* If the bitmap could not be found, return an error. */
    if (hBitmap == 0)
    	return ERROR_FILE_NOT_FOUND;
    
	GetObject(hBitmap, sizeof(BITMAP), &bmp);

	/* reload scaled up image when zoom > 100% */
    if (dpiX > 96) {
    	/* calculate scaled-up bounds */
    	scaledWidth = dpiX * bmp.bmWidth / 96;
        scaledHeight = dpiX * bmp.bmHeight / 96;

		hBitmap = LoadImage(NULL, featureImage, IMAGE_BITMAP, scaledWidth, scaledHeight, LR_LOADFROMFILE);

		/* If the bitmap could not be found, return an error. */
		if (hBitmap == 0)
			return ERROR_FILE_NOT_FOUND;

		GetObject(hBitmap, sizeof(BITMAP), &bmp);
    }

    /* figure out position */
    width = GetSystemMetrics (SM_CXSCREEN);
    height = GetSystemMetrics (SM_CYSCREEN);
    x = (width - bmp.bmWidth) / 2;
    y = (height - bmp.bmHeight) / 2;

	/* Centre the splash window and display it. */
    SetWindowPos (topWindow, 0, x, y, bmp.bmWidth, bmp.bmHeight, SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE);
    SendMessage( topWindow, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM) hBitmap );
    ShowWindow( topWindow, SW_SHOW );
    BringWindowToTop( topWindow );
	splashing = 1;
	
    /* Process messages */
	dispatchMessages();
	return 0;
}

void dispatchMessages() {
	MSG     msg;
	
	if(topWindow == 0)
		return;
	while (PeekMessage( &msg, NULL, 0, 0, PM_REMOVE))
   	{
		TranslateMessage( &msg );
		DispatchMessage( &msg );
	}
}

jlong getSplashHandle() {
	return (jlong)topWindow;
}

void takeDownSplash() {
	if(topWindow != NULL) {
		DestroyWindow(topWindow);
		dispatchMessages();
		topWindow = 0;
	}
}

/* Get the window system specific VM args */
_TCHAR** getArgVM( _TCHAR *vm )
{
	return argVM;
}

/* Local functions */

_TCHAR * findVMLibrary( _TCHAR* command ) {
	_TCHAR* lib = findLib(command);
	if( lib != NULL ) {
		adjustSearchPath(lib);
	}
	return lib;
}

void adjustSearchPath( _TCHAR* vmLib ){
	_TCHAR ** paths;
	_TCHAR* cwd = NULL;
	_TCHAR * path = NULL, *newPath = NULL;
	_TCHAR * c;
	int i, length;
	int needAdjust = 0, freePath = 0;
	
	paths = getVMLibrarySearchPath(vmLib);
	
	/* bug 325902 - add current working dir to the end of the search path */
	length = GetCurrentDirectory(0, NULL);
	cwd = malloc((length + 1)* sizeof(_TCHAR));
	GetCurrentDirectory(length, cwd);
	cwd[length - 1] = pathSeparator;
	cwd[length] = 0;
	
	/* first call to GetEnvironmentVariable tells us how big to make the buffer */
	length = GetEnvironmentVariable(_T_ECLIPSE("PATH"), path, 0);
	if (length > 0) {
		_TCHAR* current [] = { cwd, NULL };
		path = malloc(length * sizeof(_TCHAR));
		GetEnvironmentVariable(_T_ECLIPSE("PATH"), path, length);
		needAdjust = !containsPaths(path, paths) || !containsPaths(path, current);
		freePath = 1;
	} else {
		path = _T_ECLIPSE("");
		freePath = 0;
		needAdjust = 1;
	}
	
	if (needAdjust) {
		c = concatStrings(paths);
		newPath = malloc((_tcslen(c) + length + 1 + _tcslen(cwd) + 1) * sizeof(_TCHAR));
		_stprintf(newPath, _T_ECLIPSE("%s%s%c%s"), c, path, pathSeparator, cwd);
		SetEnvironmentVariable( _T_ECLIPSE("PATH"), newPath);
		free(c);
		free(newPath);
	}
	
	for (i = 0; paths[i] != NULL; i++)
		free(paths[i]);
	free(paths);
	free(cwd);
	if (freePath)
		free(path);
}
/*
 * Find the VM shared library starting from the java executable 
 */
static _TCHAR* findLib( _TCHAR* command ) {
	int i, j;
	size_t pathLength;	
	struct _stat stats;
	_TCHAR * path;				/* path to resulting jvm shared library */
	_TCHAR * location;			/* points to begining of jvmLocations section of path */
	
	/* for looking in the registry */
	HKEY jreKey = NULL;
	DWORD length = MAX_PATH;
	_TCHAR keyName[MAX_PATH];
	_TCHAR * jreKeyName;		
	
	if (command != NULL) {
		location = lastDirSeparator( command ) + 1;
		
		/*check first to see if command already points to the library */
		if (isVMLibrary(command)) {
			if (_tstat( command, &stats ) == 0 && (stats.st_mode & S_IFREG) != 0)
				return command; 	/* exists */
			return NULL; /* doesn't exist */
		}
		
		pathLength = (size_t) (location - command);
		path = malloc((pathLength + MAX_LOCATION_LENGTH + 1 + _tcslen(vmLibrary) + 1) * sizeof(_TCHAR));
		_tcsncpy(path, command, pathLength);
		location = &path[pathLength];
		 
		/* 
		 * We are trying base/jvmLocations[*]/vmLibrary
		 * where base is the directory containing the given java command, normally jre/bin
		 */
		i = -1;
		while(jvmLocations[++i] != NULL) {
			_stprintf(location, _T_ECLIPSE("%s%c%s"), jvmLocations[i], dirSeparator, vmLibrary);
			if (_tstat( path, &stats ) == 0 && (stats.st_mode & S_IFREG) != 0)
			{	/* found it */
				return path;
			}
		}
		
		/* if command is eclipse/jre, don't look in registry */
		 location = malloc( (_tcslen( getProgramDir() ) + _tcslen( shippedVMDir ) + 1) * sizeof(_TCHAR) );
        _stprintf( location, _T_ECLIPSE("%s%s"), getProgramDir(), shippedVMDir );
        if( _tcsncmp(command, location, _tcslen(location)) == 0) {
        	free(location);
        	return NULL;
        }
        free(location);
	}
	
	/* Not found yet, try the registry, we will use the first vm >= 1.6 */
	jreKeyName = _T("Software\\JavaSoft\\Java Runtime Environment");
	if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, jreKeyName, 0, KEY_READ, &jreKey) == ERROR_SUCCESS) {
		if(RegQueryValueEx(jreKey, _T_ECLIPSE("CurrentVersion"), NULL, NULL, (void*)&keyName, &length) == ERROR_SUCCESS) {
			path = checkVMRegistryKey(jreKey, keyName);
			if (path != NULL) {
				RegCloseKey(jreKey);
				return path;
			}
		}
		j = 0;
		length = MAX_PATH;
		while (RegEnumKeyEx(jreKey, j++, keyName, &length, 0, 0, 0, 0) == ERROR_SUCCESS) {  
			/*look for a 1.6+ vm*/
			if( _tcsncmp(_T("1.6"), keyName, 3) <= 0 ) {
				path = checkVMRegistryKey(jreKey, keyName);
				if (path != NULL) {
					RegCloseKey(jreKey);
					return path;
				}
			}
		}
		RegCloseKey(jreKey);
	}
	return NULL;
}

/*
 * Read the subKeyName subKey of jreKey and look to see if it has a Value 
 * "RuntimeLib" which points to a jvm library we can use 
 * 
 * Does not close jreKey
 */
static _TCHAR* checkVMRegistryKey(HKEY jreKey, _TCHAR* subKeyName) {
	_TCHAR value[MAX_PATH];
	HKEY subKey = NULL;
	DWORD length = MAX_PATH;
	_TCHAR *result = NULL;
	struct _stat stats;
	
	if(RegOpenKeyEx(jreKey, subKeyName, 0, KEY_READ, &subKey) == ERROR_SUCCESS) {				
		/*The RuntimeLib value should point to the library we want*/
		if(RegQueryValueEx(subKey, _T("RuntimeLib"), NULL, NULL, (void*)&value, &length) == ERROR_SUCCESS) {
			if (_tstat( value, &stats ) == 0 && (stats.st_mode & S_IFREG) != 0)
			{	/*library exists*/
				result = _tcsdup(value);
			}
		}
		RegCloseKey(subKey);
	}
	return result;
}

static _TCHAR* buildCommandLine( _TCHAR* program, _TCHAR* args[] )
{
	int   index, slash;
	size_t length = 0;
	_TCHAR *commandLine, *ch, *space;

	/*
	* Build the command line. Any argument with spaces must be in
	* double quotes in the command line. 
	*/
	if(program != NULL) 
		length = _tcslen(program) + 1;
	for (index = 0; args[index] != NULL; index++)
	{
		/* String length plus space character */
		length += _tcslen( args[ index ] ) + 1;
		/* Quotes + potential escaping '\' */
		if (_tcschr( args[ index ], _T(' ') ) != NULL) length += 3;
	}
	
	commandLine = ch = malloc ( (length + 1) * sizeof(_TCHAR) );
	if (program != NULL) {
		_tcscpy(ch, program);
		ch += _tcslen(program);
		*ch++ = _T(' ');
	}
	for (index = 0; args[index] != NULL; index++)
	{
		space = _tcschr( args[ index ], _T(' '));
		if (space != NULL) *ch++ = _T('\"');
		_tcscpy( ch, args[index] );
		ch += _tcslen( args[index] );
		if (space != NULL) {
			if ( *(ch - 1) == _T('\\') ) {
				/* escape a trailing unescaped '\' or it will escape our closing '"' and mess things up */
				slash = 1;
				while ( *(ch - 1 - slash) == _T('\\')) slash++;
				if (slash % 2) *ch++ = _T('\\');
			}
			*ch++ = _T('\"');
		}
		*ch++ = _T(' ');
	}
	*ch = _T('\0');
	return commandLine;
}
void restartLauncher( _TCHAR* program, _TCHAR* args[] )
{
	_TCHAR* commandLine = buildCommandLine(program, args);
	
	{
	STARTUPINFO    si;
    PROCESS_INFORMATION  pi;
    GetStartupInfo(&si);
    if (CreateProcess(NULL, commandLine, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi)) {
    	CloseHandle( pi.hThread );
    }   
	}
	free(commandLine);
}

JavaResults* launchJavaVM( _TCHAR* args[] )
{
	MSG msg;
	_TCHAR* commandLine;
	jvmProcess = 0;
	commandLine = buildCommandLine(NULL, args);
	jvmResults = malloc(sizeof(JavaResults));
	memset(jvmResults, 0, sizeof(JavaResults));
	
	/*
	* Start the Java virtual machine. Use CreateProcess() instead of spawnv()
	* otherwise the arguments cannot be freed since spawnv() segments fault.
	*/
	{
	STARTUPINFO    si;
    PROCESS_INFORMATION  pi;
    GetStartupInfo(&si);
    if (CreateProcess(NULL, commandLine, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi)) {
    	CloseHandle( pi.hThread );
    	jvmProcess = pi.hProcess;
    } else {
    	jvmResults->launchResult = errno;
    }
	}

	free( commandLine );

	if (jvmProcess > 0)
	{
        /* Set a timer to detect JVM process termination. */
        SetTimer( topWindow, jvmExitTimerId, jvmExitTimeout, detectJvmExit );

    	/* Process messages until the JVM terminates.
    	   This launcher process must continue to process events until the JVM exits
    	   or else Windows 2K will hang if the desktop properties (e.g., background) are
    	   changed by the user. Windows does a SendMessage() to every top level window
    	   process, which blocks the caller until the process responds. */
   		while (jvmProcess != 0)
   		{
   			GetMessage( &msg, NULL, 0, 0 );
			TranslateMessage( &msg );
			DispatchMessage( &msg );
		}

		/* Kill the timer. */
        KillTimer( topWindow, jvmExitTimerId );
	}

	/* Return the exit code from the JVM. */
	return jvmResults;
}

/* Detect JVM Process Termination */
static void CALLBACK detectJvmExit( HWND hwnd, UINT uMsg, UINT id, DWORD dwTime )
{
    DWORD   exitCode;

    /* If the JVM process has terminated */
    if (!GetExitCodeProcess( (HANDLE)jvmProcess, &exitCode ) ||
    		 exitCode != STILL_ACTIVE)
    {
    	/* Save the JVM exit code. This should cause the loop in launchJavaVM() to exit. */
        jvmResults->runResult = exitCode;
        jvmProcess = 0;
    }
}

void processVMArgs(_TCHAR **vmargs[] ) {
	/* nothing yet */
}

JavaResults* startJavaVM( _TCHAR* libPath, _TCHAR* vmArgs[], _TCHAR* progArgs[], _TCHAR* jarFile )
{
	return startJavaJNI(libPath, vmArgs, progArgs, jarFile);
}

/* returns 1 if the JVM version is >= 9, 0 otherwise */
int isModularVM( _TCHAR * javaVM, _TCHAR * jniLib ) {
	_TCHAR *vm = (jniLib != NULL) ? jniLib : javaVM;
	int result = 0;
	DWORD infoSize;
	DWORD handle;
	void * info;
	
	_TCHAR *versionKey, *version, *majorVersion = NULL;
	int versionSize;
	
	if (vm == NULL)
		return 0;
	
	infoSize = GetFileVersionInfoSize(vm, &handle);
	if (infoSize > 0) {
		info = malloc(infoSize);
		if (GetFileVersionInfo(vm, 0,  infoSize, info)) {
			TRANSLATIONS * translations;
			int translationsSize;
			VerQueryValue(info,  _T_ECLIPSE("\\VarFileInfo\\Translation"), (void *) &translations, &translationsSize);

			/* this size is only right because %04x is 4 characters */
			versionKey = malloc((_tcslen(PRODUCT_VERSION_KEY) + 1) * sizeof(_TCHAR));
				_stprintf(versionKey, PRODUCT_VERSION_KEY, translations[0].language, translations[0].codepage);
				VerQueryValue(info, versionKey, (void *)&version, &versionSize);
				if (versionSize >= 1) {
					majorVersion = _tcstok(version, ".-");
					if ((majorVersion != NULL) && (_tcstol(majorVersion, NULL, 10) >= 9)) {
						result = 1;
					}
				}
			free(versionKey);
		}
		free(info);
	}
	return result;
}

Back to the top