1 /*
2 * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <windows.h>
27 #include <io.h>
28 #include <process.h>
29 #include <stdlib.h>
30 #include <stdio.h>
31 #include <stdarg.h>
32 #include <string.h>
33 #include <sys/types.h>
34 #include <sys/stat.h>
35 #include <wtypes.h>
36 #include <commctrl.h>
37 #include <assert.h>
38
39 #include <jni.h>
40 #include "java.h"
41
42 #define JVM_DLL "jvm.dll"
43 #define JAVA_DLL "java.dll"
44
45 /*
46 * Prototypes.
47 */
48 static jboolean GetJVMPath(const char *jrepath, const char *jvmtype,
49 char *jvmpath, jint jvmpathsize);
50 static jboolean GetJREPath(char *path, jint pathsize);
51
52 #ifdef USE_REGISTRY_LOOKUP
53 jboolean GetPublicJREHome(char *buf, jint bufsize);
54 #endif
55
56 /* We supports warmup for UI stack that is performed in parallel
57 * to VM initialization.
58 * This helps to improve startup of UI application as warmup phase
59 * might be long due to initialization of OS or hardware resources.
60 * It is not CPU bound and therefore it does not interfere with VM init.
61 * Obviously such warmup only has sense for UI apps and therefore it needs
62 * to be explicitly requested by passing -Dsun.awt.warmup=true property
63 * (this is always the case for plugin/javaws).
64 *
65 * Implementation launches new thread after VM starts and use it to perform
66 * warmup code (platform dependent).
67 * This thread is later reused as AWT toolkit thread as graphics toolkit
68 * often assume that they are used from the same thread they were launched on.
69 *
70 * At the moment we only support warmup for D3D. It only possible on windows
71 * and only if other flags do not prohibit this (e.g. OpenGL support requested).
72 */
73 #undef ENABLE_AWT_PRELOAD
74 #ifndef JAVA_ARGS /* turn off AWT preloading for javac, jar, etc */
75 /* CR6999872: fastdebug crashes if awt library is loaded before JVM is
76 * initialized*/
77 #if !defined(DEBUG)
78 #define ENABLE_AWT_PRELOAD
79 #endif
80 #endif
81
82 #ifdef ENABLE_AWT_PRELOAD
83 /* "AWT was preloaded" flag;
84 * turned on by AWTPreload().
85 */
86 int awtPreloaded = 0;
87
88 /* Calls a function with the name specified
89 * the function must be int(*fn)(void).
90 */
91 int AWTPreload(const char *funcName);
92 /* stops AWT preloading */
93 void AWTPreloadStop();
94
95 /* D3D preloading */
96 /* -1: not initialized; 0: OFF, 1: ON */
97 int awtPreloadD3D = -1;
98 /* command line parameter to swith D3D preloading on */
99 #define PARAM_PRELOAD_D3D "-Dsun.awt.warmup"
100 /* D3D/OpenGL management parameters */
101 #define PARAM_NODDRAW "-Dsun.java2d.noddraw"
102 #define PARAM_D3D "-Dsun.java2d.d3d"
103 #define PARAM_OPENGL "-Dsun.java2d.opengl"
104 /* funtion in awt.dll (src/windows/native/sun/java2d/d3d/D3DPipelineManager.cpp) */
105 #define D3D_PRELOAD_FUNC "preloadD3D"
106
107 /* Extracts value of a parameter with the specified name
108 * from command line argument (returns pointer in the argument).
109 * Returns NULL if the argument does not contains the parameter.
110 * e.g.:
111 * GetParamValue("theParam", "theParam=value") returns pointer to "value".
112 */
113 const char * GetParamValue(const char *paramName, const char *arg) {
114 size_t nameLen = JLI_StrLen(paramName);
115 if (JLI_StrNCmp(paramName, arg, nameLen) == 0) {
116 /* arg[nameLen] is valid (may contain final NULL) */
117 if (arg[nameLen] == '=') {
118 return arg + nameLen + 1;
119 }
120 }
121 return NULL;
122 }
123
124 /* Checks if commandline argument contains property specified
125 * and analyze it as boolean property (true/false).
126 * Returns -1 if the argument does not contain the parameter;
127 * Returns 1 if the argument contains the parameter and its value is "true";
128 * Returns 0 if the argument contains the parameter and its value is "false".
129 */
130 int GetBoolParamValue(const char *paramName, const char *arg) {
131 const char * paramValue = GetParamValue(paramName, arg);
132 if (paramValue != NULL) {
133 if (JLI_StrCaseCmp(paramValue, "true") == 0) {
134 return 1;
135 }
136 if (JLI_StrCaseCmp(paramValue, "false") == 0) {
137 return 0;
138 }
139 }
140 return -1;
141 }
142 #endif /* ENABLE_AWT_PRELOAD */
143
144
145 static jboolean _isjavaw = JNI_FALSE;
146
147
148 jboolean
149 IsJavaw()
150 {
151 return _isjavaw;
152 }
153
154 /*
155 *
156 */
157 void
158 CreateExecutionEnvironment(int *pargc, char ***pargv,
159 char *jrepath, jint so_jrepath,
160 char *jvmpath, jint so_jvmpath,
161 char *jvmcfg, jint so_jvmcfg) {
162
163 char *jvmtype;
164 int i = 0;
165 char** argv = *pargv;
166
167 /* Find out where the JRE is that we will be using. */
168 if (!GetJREPath(jrepath, so_jrepath)) {
169 JLI_ReportErrorMessage(JRE_ERROR1);
170 exit(2);
171 }
172
173 JLI_Snprintf(jvmcfg, so_jvmcfg, "%s%slib%sjvm.cfg",
174 jrepath, FILESEP, FILESEP);
175
176 /* Find the specified JVM type */
177 if (ReadKnownVMs(jvmcfg, JNI_FALSE) < 1) {
178 JLI_ReportErrorMessage(CFG_ERROR7);
179 exit(1);
180 }
181
182 jvmtype = CheckJvmType(pargc, pargv, JNI_FALSE);
183 if (JLI_StrCmp(jvmtype, "ERROR") == 0) {
184 JLI_ReportErrorMessage(CFG_ERROR9);
185 exit(4);
186 }
187
188 jvmpath[0] = '\0';
189 if (!GetJVMPath(jrepath, jvmtype, jvmpath, so_jvmpath)) {
190 JLI_ReportErrorMessage(CFG_ERROR8, jvmtype, jvmpath);
191 exit(4);
192 }
193 /* If we got here, jvmpath has been correctly initialized. */
194
195 /* Check if we need preload AWT */
196 #ifdef ENABLE_AWT_PRELOAD
197 argv = *pargv;
198 for (i = 0; i < *pargc ; i++) {
199 /* Tests the "turn on" parameter only if not set yet. */
200 if (awtPreloadD3D < 0) {
201 if (GetBoolParamValue(PARAM_PRELOAD_D3D, argv[i]) == 1) {
202 awtPreloadD3D = 1;
203 }
204 }
205 /* Test parameters which can disable preloading if not already disabled. */
206 if (awtPreloadD3D != 0) {
207 if (GetBoolParamValue(PARAM_NODDRAW, argv[i]) == 1
208 || GetBoolParamValue(PARAM_D3D, argv[i]) == 0
209 || GetBoolParamValue(PARAM_OPENGL, argv[i]) == 1)
210 {
211 awtPreloadD3D = 0;
212 /* no need to test the rest of the parameters */
213 break;
214 }
215 }
216 }
217 #endif /* ENABLE_AWT_PRELOAD */
218 }
219
220
221 static jboolean
222 LoadMSVCRT()
223 {
224 // Only do this once
225 static int loaded = 0;
226 char crtpath[MAXPATHLEN];
227
228 if (!loaded) {
229 /*
230 * The Microsoft C Runtime Library needs to be loaded first. A copy is
231 * assumed to be present in the "JRE path" directory. If it is not found
232 * there (or "JRE path" fails to resolve), skip the explicit load and let
233 * nature take its course, which is likely to be a failure to execute.
234 * The makefiles will provide the correct lib contained in quotes in the
235 * macro MSVCR_DLL_NAME.
236 */
237 #ifdef MSVCR_DLL_NAME
238 if (GetJREPath(crtpath, MAXPATHLEN)) {
239 if (JLI_StrLen(crtpath) + JLI_StrLen("\\bin\\") +
240 JLI_StrLen(MSVCR_DLL_NAME) >= MAXPATHLEN) {
241 JLI_ReportErrorMessage(JRE_ERROR11);
242 return JNI_FALSE;
243 }
244 (void)JLI_StrCat(crtpath, "\\bin\\" MSVCR_DLL_NAME); /* Add crt dll */
245 JLI_TraceLauncher("CRT path is %s\n", crtpath);
246 if (_access(crtpath, 0) == 0) {
247 if (LoadLibrary(crtpath) == 0) {
248 JLI_ReportErrorMessage(DLL_ERROR4, crtpath);
249 return JNI_FALSE;
250 }
251 }
252 }
253 #endif /* MSVCR_DLL_NAME */
254 #ifdef MSVCP_DLL_NAME
255 if (GetJREPath(crtpath, MAXPATHLEN)) {
256 if (JLI_StrLen(crtpath) + JLI_StrLen("\\bin\\") +
257 JLI_StrLen(MSVCP_DLL_NAME) >= MAXPATHLEN) {
258 JLI_ReportErrorMessage(JRE_ERROR11);
259 return JNI_FALSE;
260 }
261 (void)JLI_StrCat(crtpath, "\\bin\\" MSVCP_DLL_NAME); /* Add prt dll */
262 JLI_TraceLauncher("PRT path is %s\n", crtpath);
263 if (_access(crtpath, 0) == 0) {
264 if (LoadLibrary(crtpath) == 0) {
265 JLI_ReportErrorMessage(DLL_ERROR4, crtpath);
266 return JNI_FALSE;
267 }
268 }
269 }
270 #endif /* MSVCP_DLL_NAME */
271 loaded = 1;
272 }
273 return JNI_TRUE;
274 }
275
276
277 /*
278 * Find path to JRE based on .exe's location or registry settings.
279 */
280 jboolean
281 GetJREPath(char *path, jint pathsize)
282 {
283 char javadll[MAXPATHLEN];
284 struct stat s;
285
286 if (GetApplicationHome(path, pathsize)) {
287 /* Is JRE co-located with the application? */
288 JLI_Snprintf(javadll, sizeof(javadll), "%s\\bin\\" JAVA_DLL, path);
289 if (stat(javadll, &s) == 0) {
290 JLI_TraceLauncher("JRE path is %s\n", path);
291 return JNI_TRUE;
292 }
293 /* ensure storage for path + \jre + NULL */
294 if ((JLI_StrLen(path) + 4 + 1) > (size_t) pathsize) {
295 JLI_TraceLauncher("Insufficient space to store JRE path\n");
296 return JNI_FALSE;
297 }
298 /* Does this app ship a private JRE in <apphome>\jre directory? */
299 JLI_Snprintf(javadll, sizeof (javadll), "%s\\jre\\bin\\" JAVA_DLL, path);
300 if (stat(javadll, &s) == 0) {
301 JLI_StrCat(path, "\\jre");
302 JLI_TraceLauncher("JRE path is %s\n", path);
303 return JNI_TRUE;
304 }
305 }
306
307 /* Try getting path to JRE from path to JLI.DLL */
308 if (GetApplicationHomeFromDll(path, pathsize)) {
309 JLI_Snprintf(javadll, sizeof(javadll), "%s\\bin\\" JAVA_DLL, path);
310 if (stat(javadll, &s) == 0) {
311 JLI_TraceLauncher("JRE path is %s\n", path);
312 return JNI_TRUE;
313 }
314 }
315
316 #ifdef USE_REGISTRY_LOOKUP
317 /* Lookup public JRE using Windows registry. */
318 if (GetPublicJREHome(path, pathsize)) {
319 JLI_TraceLauncher("JRE path is %s\n", path);
320 return JNI_TRUE;
321 }
322 #endif
323
324 JLI_ReportErrorMessage(JRE_ERROR8 JAVA_DLL);
325 return JNI_FALSE;
326 }
327
328 /*
329 * Given a JRE location and a JVM type, construct what the name the
330 * JVM shared library will be. Return true, if such a library
331 * exists, false otherwise.
332 */
333 static jboolean
334 GetJVMPath(const char *jrepath, const char *jvmtype,
335 char *jvmpath, jint jvmpathsize)
336 {
337 struct stat s;
338 if (JLI_StrChr(jvmtype, '/') || JLI_StrChr(jvmtype, '\\')) {
339 JLI_Snprintf(jvmpath, jvmpathsize, "%s\\" JVM_DLL, jvmtype);
340 } else {
341 JLI_Snprintf(jvmpath, jvmpathsize, "%s\\bin\\%s\\" JVM_DLL,
342 jrepath, jvmtype);
343 }
344 if (stat(jvmpath, &s) == 0) {
345 return JNI_TRUE;
346 } else {
347 return JNI_FALSE;
348 }
349 }
350
351 /*
352 * Load a jvm from "jvmpath" and initialize the invocation functions.
353 */
354 jboolean
355 LoadJavaVM(const char *jvmpath, InvocationFunctions *ifn)
356 {
357 HINSTANCE handle;
358
359 JLI_TraceLauncher("JVM path is %s\n", jvmpath);
360
361 /*
362 * The Microsoft C Runtime Library needs to be loaded first. A copy is
363 * assumed to be present in the "JRE path" directory. If it is not found
364 * there (or "JRE path" fails to resolve), skip the explicit load and let
365 * nature take its course, which is likely to be a failure to execute.
366 *
367 */
368 LoadMSVCRT();
369
370 /* Load the Java VM DLL */
371 if ((handle = LoadLibrary(jvmpath)) == 0) {
372 JLI_ReportErrorMessage(DLL_ERROR4, (char *)jvmpath);
373 return JNI_FALSE;
374 }
375
376 /* Now get the function addresses */
377 ifn->CreateJavaVM =
378 (void *)GetProcAddress(handle, "JNI_CreateJavaVM");
379 ifn->GetDefaultJavaVMInitArgs =
380 (void *)GetProcAddress(handle, "JNI_GetDefaultJavaVMInitArgs");
381 if (ifn->CreateJavaVM == 0 || ifn->GetDefaultJavaVMInitArgs == 0) {
382 JLI_ReportErrorMessage(JNI_ERROR1, (char *)jvmpath);
383 return JNI_FALSE;
384 }
385
386 return JNI_TRUE;
387 }
388
389 /*
390 * Removes the trailing file name and one sub-folder from a path.
391 * If buf is "c:\foo\bin\javac", then put "c:\foo" into buf.
392 */
393 jboolean
394 TruncatePath(char *buf)
395 {
396 char *cp;
397 *JLI_StrRChr(buf, '\\') = '\0'; /* remove .exe file name */
398 if ((cp = JLI_StrRChr(buf, '\\')) == 0) {
399 /* This happens if the application is in a drive root, and
400 * there is no bin directory. */
401 buf[0] = '\0';
402 return JNI_FALSE;
403 }
404 *cp = '\0'; /* remove the bin\ part */
405 return JNI_TRUE;
406 }
407
408 /*
409 * Retrieves the path to the JRE home by locating the executable file
410 * of the current process and then truncating the path to the executable
411 */
412 jboolean
413 GetApplicationHome(char *buf, jint bufsize)
414 {
415 GetModuleFileName(NULL, buf, bufsize);
416 return TruncatePath(buf);
417 }
418
419 /*
420 * Retrieves the path to the JRE home by locating JLI.DLL and
421 * then truncating the path to JLI.DLL
422 */
423 jboolean
424 GetApplicationHomeFromDll(char *buf, jint bufsize)
425 {
426 HMODULE module;
427 DWORD flags = GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
428 GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT;
429
430 if (GetModuleHandleEx(flags, (LPCSTR)&GetJREPath, &module) != 0) {
431 if (GetModuleFileName(module, buf, bufsize) != 0) {
432 return TruncatePath(buf);
433 }
434 }
435 return JNI_FALSE;
436 }
437
438 /*
439 * Support for doing cheap, accurate interval timing.
440 */
441 static jboolean counterAvailable = JNI_FALSE;
442 static jboolean counterInitialized = JNI_FALSE;
443 static LARGE_INTEGER counterFrequency;
444
445 jlong CounterGet()
446 {
447 LARGE_INTEGER count;
448
449 if (!counterInitialized) {
450 counterAvailable = QueryPerformanceFrequency(&counterFrequency);
451 counterInitialized = JNI_TRUE;
452 }
453 if (!counterAvailable) {
454 return 0;
455 }
456 QueryPerformanceCounter(&count);
457 return (jlong)(count.QuadPart);
458 }
459
460 jlong Counter2Micros(jlong counts)
461 {
462 if (!counterAvailable || !counterInitialized) {
463 return 0;
464 }
465 return (counts * 1000 * 1000)/counterFrequency.QuadPart;
466 }
467 /*
468 * windows snprintf does not guarantee a null terminator in the buffer,
469 * if the computed size is equal to or greater than the buffer size,
470 * as well as error conditions. This function guarantees a null terminator
471 * under all these conditions. An unreasonable buffer or size will return
472 * an error value. Under all other conditions this function will return the
473 * size of the bytes actually written minus the null terminator, similar
474 * to ansi snprintf api. Thus when calling this function the caller must
475 * ensure storage for the null terminator.
476 */
477 int
478 JLI_Snprintf(char* buffer, size_t size, const char* format, ...) {
479 int rc;
480 va_list vl;
481 if (size == 0 || buffer == NULL)
482 return -1;
483 buffer[0] = '\0';
484 va_start(vl, format);
485 rc = vsnprintf(buffer, size, format, vl);
486 va_end(vl);
487 /* force a null terminator, if something is amiss */
488 if (rc < 0) {
489 /* apply ansi semantics */
490 buffer[size - 1] = '\0';
491 return (int)size;
492 } else if (rc == size) {
493 /* force a null terminator */
494 buffer[size - 1] = '\0';
495 }
496 return rc;
497 }
498
499 static errno_t convert_to_unicode(const char* path, const wchar_t* prefix, wchar_t** wpath) {
500 int unicode_path_len;
501 size_t prefix_len, wpath_len;
502
503 /*
504 * Get required buffer size to convert to Unicode.
505 * The return value includes the terminating null character.
506 */
507 unicode_path_len = MultiByteToWideChar(CP_THREAD_ACP, MB_ERR_INVALID_CHARS,
508 path, -1, NULL, 0);
509 if (unicode_path_len == 0) {
510 return EINVAL;
511 }
512
513 prefix_len = wcslen(prefix);
514 wpath_len = prefix_len + unicode_path_len;
515 *wpath = (wchar_t*)JLI_MemAlloc(wpath_len * sizeof(wchar_t));
516 if (*wpath == NULL) {
517 return ENOMEM;
518 }
519
520 wcsncpy(*wpath, prefix, prefix_len);
521 if (MultiByteToWideChar(CP_THREAD_ACP, MB_ERR_INVALID_CHARS,
522 path, -1, &((*wpath)[prefix_len]), (int)wpath_len) == 0) {
523 JLI_MemFree(*wpath);
524 return EINVAL;
525 }
526
527 return ERROR_SUCCESS;
528 }
529
530 /* taken from hotspot and slightly adjusted for jli lib;
531 * creates a UNC/ELP path from input 'path'
532 * the return buffer is allocated in C heap and needs to be freed using
533 * JLI_MemFree by the caller.
534 */
535 static wchar_t* create_unc_path(const char* path, errno_t* err) {
536 wchar_t* wpath = NULL;
537 size_t converted_chars = 0;
538 size_t path_len = strlen(path) + 1; /* includes the terminating NULL */
539 if (path[0] == '\\' && path[1] == '\\') {
540 if (path[2] == '?' && path[3] == '\\') {
541 /* if it already has a \\?\ don't do the prefix */
542 *err = convert_to_unicode(path, L"", &wpath);
543 } else {
544 /* only UNC pathname includes double slashes here */
545 *err = convert_to_unicode(path, L"\\\\?\\UNC", &wpath);
546 }
547 } else {
548 *err = convert_to_unicode(path, L"\\\\?\\", &wpath);
549 }
550 return wpath;
551 }
552
553 int JLI_Open(const char* name, int flags) {
554 int fd;
555 if (strlen(name) < MAX_PATH) {
556 fd = _open(name, flags);
557 } else {
558 errno_t err = ERROR_SUCCESS;
559 wchar_t* wpath = create_unc_path(name, &err);
560 if (err != ERROR_SUCCESS) {
561 if (wpath != NULL) JLI_MemFree(wpath);
562 errno = err;
563 return -1;
564 }
565 fd = _wopen(wpath, flags);
566 if (fd == -1) {
567 errno = GetLastError();
568 }
569 JLI_MemFree(wpath);
570 }
571 return fd;
572 }
573
574 JNIEXPORT void JNICALL
575 JLI_ReportErrorMessage(const char* fmt, ...) {
576 va_list vl;
577 va_start(vl,fmt);
578
579 if (IsJavaw()) {
580 char *message;
581
582 /* get the length of the string we need */
583 int n = _vscprintf(fmt, vl);
584
585 message = (char *)JLI_MemAlloc(n + 1);
586 _vsnprintf(message, n, fmt, vl);
587 message[n]='\0';
588 MessageBox(NULL, message, "Java Virtual Machine Launcher",
589 (MB_OK|MB_ICONSTOP|MB_APPLMODAL));
590 JLI_MemFree(message);
591 } else {
592 vfprintf(stderr, fmt, vl);
593 fprintf(stderr, "\n");
594 }
595 va_end(vl);
596 }
597
598 /*
599 * Just like JLI_ReportErrorMessage, except that it concatenates the system
600 * error message if any, its upto the calling routine to correctly
601 * format the separation of the messages.
602 */
603 JNIEXPORT void JNICALL
604 JLI_ReportErrorMessageSys(const char *fmt, ...)
605 {
606 va_list vl;
607
608 int save_errno = errno;
609 DWORD errval;
610 jboolean freeit = JNI_FALSE;
611 char *errtext = NULL;
612
613 va_start(vl, fmt);
614
615 if ((errval = GetLastError()) != 0) { /* Platform SDK / DOS Error */
616 int n = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|
617 FORMAT_MESSAGE_IGNORE_INSERTS|FORMAT_MESSAGE_ALLOCATE_BUFFER,
618 NULL, errval, 0, (LPTSTR)&errtext, 0, NULL);
619 if (errtext == NULL || n == 0) { /* Paranoia check */
620 errtext = "";
621 n = 0;
622 } else {
623 freeit = JNI_TRUE;
624 if (n > 2) { /* Drop final CR, LF */
625 if (errtext[n - 1] == '\n') n--;
626 if (errtext[n - 1] == '\r') n--;
627 errtext[n] = '\0';
628 }
629 }
630 } else { /* C runtime error that has no corresponding DOS error code */
631 errtext = strerror(save_errno);
632 }
633
634 if (IsJavaw()) {
635 char *message;
636 int mlen;
637 /* get the length of the string we need */
638 int len = mlen = _vscprintf(fmt, vl) + 1;
639 if (freeit) {
640 mlen += (int)JLI_StrLen(errtext);
641 }
642
643 message = (char *)JLI_MemAlloc(mlen);
644 _vsnprintf(message, len, fmt, vl);
645 message[len]='\0';
646
647 if (freeit) {
648 JLI_StrCat(message, errtext);
649 }
650
651 MessageBox(NULL, message, "Java Virtual Machine Launcher",
652 (MB_OK|MB_ICONSTOP|MB_APPLMODAL));
653
654 JLI_MemFree(message);
655 } else {
656 vfprintf(stderr, fmt, vl);
657 if (freeit) {
658 fprintf(stderr, "%s", errtext);
659 }
660 }
661 if (freeit) {
662 (void)LocalFree((HLOCAL)errtext);
663 }
664 va_end(vl);
665 }
666
667 JNIEXPORT void JNICALL
668 JLI_ReportExceptionDescription(JNIEnv * env) {
669 if (IsJavaw()) {
670 /*
671 * This code should be replaced by code which opens a window with
672 * the exception detail message, for now atleast put a dialog up.
673 */
674 MessageBox(NULL, "A Java Exception has occurred.", "Java Virtual Machine Launcher",
675 (MB_OK|MB_ICONSTOP|MB_APPLMODAL));
676 } else {
677 (*env)->ExceptionDescribe(env);
678 }
679 }
680
681 /*
682 * Wrapper for platform dependent unsetenv function.
683 */
684 int
685 UnsetEnv(char *name)
686 {
687 int ret;
688 char *buf = JLI_MemAlloc(JLI_StrLen(name) + 2);
689 buf = JLI_StrCat(JLI_StrCpy(buf, name), "=");
690 ret = _putenv(buf);
691 JLI_MemFree(buf);
692 return (ret);
693 }
694
695 /* --- Splash Screen shared library support --- */
696
697 static const char* SPLASHSCREEN_SO = "\\bin\\splashscreen.dll";
698
699 static HMODULE hSplashLib = NULL;
700
701 void* SplashProcAddress(const char* name) {
702 char libraryPath[MAXPATHLEN]; /* some extra space for JLI_StrCat'ing SPLASHSCREEN_SO */
703
704 if (!GetJREPath(libraryPath, MAXPATHLEN)) {
705 return NULL;
706 }
707 if (JLI_StrLen(libraryPath)+JLI_StrLen(SPLASHSCREEN_SO) >= MAXPATHLEN) {
708 return NULL;
709 }
710 JLI_StrCat(libraryPath, SPLASHSCREEN_SO);
711
712 if (!hSplashLib) {
713 hSplashLib = LoadLibrary(libraryPath);
714 }
715 if (hSplashLib) {
716 return GetProcAddress(hSplashLib, name);
717 } else {
718 return NULL;
719 }
720 }
721
722 /*
723 * Signature adapter for _beginthreadex().
724 */
725 static unsigned __stdcall ThreadJavaMain(void* args) {
726 return (unsigned)JavaMain(args);
727 }
728
729 /*
730 * Block current thread and continue execution in a new thread.
731 */
732 int
733 CallJavaMainInNewThread(jlong stack_size, void* args) {
734 int rslt = 0;
735 unsigned thread_id;
736
737 #ifndef STACK_SIZE_PARAM_IS_A_RESERVATION
738 #define STACK_SIZE_PARAM_IS_A_RESERVATION (0x10000)
739 #endif
740
741 /*
742 * STACK_SIZE_PARAM_IS_A_RESERVATION is what we want, but it's not
743 * supported on older version of Windows. Try first with the flag; and
744 * if that fails try again without the flag. See MSDN document or HotSpot
745 * source (os_win32.cpp) for details.
746 */
747 HANDLE thread_handle =
748 (HANDLE)_beginthreadex(NULL,
749 (unsigned)stack_size,
750 ThreadJavaMain,
751 args,
752 STACK_SIZE_PARAM_IS_A_RESERVATION,
753 &thread_id);
754 if (thread_handle == NULL) {
755 thread_handle =
756 (HANDLE)_beginthreadex(NULL,
757 (unsigned)stack_size,
758 ThreadJavaMain,
759 args,
760 0,
761 &thread_id);
762 }
763
764 /* AWT preloading (AFTER main thread start) */
765 #ifdef ENABLE_AWT_PRELOAD
766 /* D3D preloading */
767 if (awtPreloadD3D != 0) {
768 char *envValue;
769 /* D3D routines checks env.var J2D_D3D if no appropriate
770 * command line params was specified
771 */
772 envValue = getenv("J2D_D3D");
773 if (envValue != NULL && JLI_StrCaseCmp(envValue, "false") == 0) {
774 awtPreloadD3D = 0;
775 }
776 /* Test that AWT preloading isn't disabled by J2D_D3D_PRELOAD env.var */
777 envValue = getenv("J2D_D3D_PRELOAD");
778 if (envValue != NULL && JLI_StrCaseCmp(envValue, "false") == 0) {
779 awtPreloadD3D = 0;
780 }
781 if (awtPreloadD3D < 0) {
782 /* If awtPreloadD3D is still undefined (-1), test
783 * if it is turned on by J2D_D3D_PRELOAD env.var.
784 * By default it's turned OFF.
785 */
786 awtPreloadD3D = 0;
787 if (envValue != NULL && JLI_StrCaseCmp(envValue, "true") == 0) {
788 awtPreloadD3D = 1;
789 }
790 }
791 }
792 if (awtPreloadD3D) {
793 AWTPreload(D3D_PRELOAD_FUNC);
794 }
795 #endif /* ENABLE_AWT_PRELOAD */
796
797 if (thread_handle) {
798 WaitForSingleObject(thread_handle, INFINITE);
799 GetExitCodeThread(thread_handle, &rslt);
800 CloseHandle(thread_handle);
801 } else {
802 rslt = JavaMain(args);
803 }
804
805 #ifdef ENABLE_AWT_PRELOAD
806 if (awtPreloaded) {
807 AWTPreloadStop();
808 }
809 #endif /* ENABLE_AWT_PRELOAD */
810
811 return rslt;
812 }
813
814 /*
815 * The implementation for finding classes from the bootstrap
816 * class loader, refer to java.h
817 */
818 static FindClassFromBootLoader_t *findBootClass = NULL;
819
820 jclass FindBootStrapClass(JNIEnv *env, const char *classname)
821 {
822 HMODULE hJvm;
823
824 if (findBootClass == NULL) {
825 hJvm = GetModuleHandle(JVM_DLL);
826 if (hJvm == NULL) return NULL;
827 /* need to use the demangled entry point */
828 findBootClass = (FindClassFromBootLoader_t *)GetProcAddress(hJvm,
829 "JVM_FindClassFromBootLoader");
830 if (findBootClass == NULL) {
831 JLI_ReportErrorMessage(DLL_ERROR4, "JVM_FindClassFromBootLoader");
832 return NULL;
833 }
834 }
835 return findBootClass(env, classname);
836 }
837
838 void
839 InitLauncher(boolean javaw)
840 {
841 INITCOMMONCONTROLSEX icx;
842
843 /*
844 * Required for javaw mode MessageBox output as well as for
845 * HotSpot -XX:+ShowMessageBoxOnError in java mode, an empty
846 * flag field is sufficient to perform the basic UI initialization.
847 */
848 memset(&icx, 0, sizeof(INITCOMMONCONTROLSEX));
849 icx.dwSize = sizeof(INITCOMMONCONTROLSEX);
850 InitCommonControlsEx(&icx);
851 _isjavaw = javaw;
852 JLI_SetTraceLauncher();
853 }
854
855
856 /* ============================== */
857 /* AWT preloading */
858 #ifdef ENABLE_AWT_PRELOAD
859
860 typedef int FnPreloadStart(void);
861 typedef void FnPreloadStop(void);
862 static FnPreloadStop *fnPreloadStop = NULL;
863 static HMODULE hPreloadAwt = NULL;
864
865 /*
866 * Starts AWT preloading
867 */
868 int AWTPreload(const char *funcName)
869 {
870 int result = -1;
871 /* load AWT library once (if several preload function should be called) */
872 if (hPreloadAwt == NULL) {
873 /* awt.dll is not loaded yet */
874 char libraryPath[MAXPATHLEN];
875 size_t jrePathLen = 0;
876 HMODULE hJava = NULL;
877 HMODULE hVerify = NULL;
878
879 while (1) {
880 /* awt.dll depends on jvm.dll & java.dll;
881 * jvm.dll is already loaded, so we need only java.dll;
882 * java.dll depends on MSVCRT lib & verify.dll.
883 */
884 if (!GetJREPath(libraryPath, MAXPATHLEN)) {
885 break;
886 }
887
888 /* save path length */
889 jrePathLen = JLI_StrLen(libraryPath);
890
891 if (jrePathLen + JLI_StrLen("\\bin\\verify.dll") >= MAXPATHLEN) {
892 /* jre path is too long, the library path will not fit there;
893 * report and abort preloading
894 */
895 JLI_ReportErrorMessage(JRE_ERROR11);
896 break;
897 }
898
899 /* load msvcrt 1st */
900 LoadMSVCRT();
901
902 /* load verify.dll */
903 JLI_StrCat(libraryPath, "\\bin\\verify.dll");
904 hVerify = LoadLibrary(libraryPath);
905 if (hVerify == NULL) {
906 break;
907 }
908
909 /* restore jrePath */
910 libraryPath[jrePathLen] = 0;
911 /* load java.dll */
912 JLI_StrCat(libraryPath, "\\bin\\" JAVA_DLL);
913 hJava = LoadLibrary(libraryPath);
914 if (hJava == NULL) {
915 break;
916 }
917
918 /* restore jrePath */
919 libraryPath[jrePathLen] = 0;
920 /* load awt.dll */
921 JLI_StrCat(libraryPath, "\\bin\\awt.dll");
922 hPreloadAwt = LoadLibrary(libraryPath);
923 if (hPreloadAwt == NULL) {
924 break;
925 }
926
927 /* get "preloadStop" func ptr */
928 fnPreloadStop = (FnPreloadStop *)GetProcAddress(hPreloadAwt, "preloadStop");
929
930 break;
931 }
932 }
933
934 if (hPreloadAwt != NULL) {
935 FnPreloadStart *fnInit = (FnPreloadStart *)GetProcAddress(hPreloadAwt, funcName);
936 if (fnInit != NULL) {
937 /* don't forget to stop preloading */
938 awtPreloaded = 1;
939
940 result = fnInit();
941 }
942 }
943
944 return result;
945 }
946
947 /*
948 * Terminates AWT preloading
949 */
950 void AWTPreloadStop() {
951 if (fnPreloadStop != NULL) {
952 fnPreloadStop();
953 }
954 }
955
956 #endif /* ENABLE_AWT_PRELOAD */
957
958 int
959 JVMInit(InvocationFunctions* ifn, jlong threadStackSize,
960 int argc, char **argv,
961 int mode, char *what, int ret)
962 {
963 ShowSplashScreen();
964 return ContinueInNewThread(ifn, threadStackSize, argc, argv, mode, what, ret);
965 }
966
967 void
968 PostJVMInit(JNIEnv *env, jclass mainClass, JavaVM *vm)
969 {
970 // stubbed out for windows and *nixes.
971 }
972
973 void
974 RegisterThread()
975 {
976 // stubbed out for windows and *nixes.
977 }
978
979 /*
980 * on windows, we return a false to indicate this option is not applicable
981 */
982 jboolean
983 ProcessPlatformOption(const char *arg)
984 {
985 return JNI_FALSE;
986 }
987
988 /*
989 * At this point we have the arguments to the application, and we need to
990 * check with original stdargs in order to compare which of these truly
991 * needs expansion. cmdtoargs will specify this if it finds a bare
992 * (unquoted) argument containing a glob character(s) ie. * or ?
993 */
994 jobjectArray
995 CreateApplicationArgs(JNIEnv *env, char **strv, int argc)
996 {
997 int i, j, idx;
998 size_t tlen;
999 jobjectArray outArray, inArray;
1000 char *arg, **nargv;
1001 jboolean needs_expansion = JNI_FALSE;
1002 jmethodID mid;
1003 int stdargc;
1004 StdArg *stdargs;
1005 int *appArgIdx;
1006 int isTool;
1007 jclass cls = GetLauncherHelperClass(env);
1008 NULL_CHECK0(cls);
1009
1010 if (argc == 0) {
1011 return NewPlatformStringArray(env, strv, argc);
1012 }
1013 // the holy grail we need to compare with.
1014 stdargs = JLI_GetStdArgs();
1015 stdargc = JLI_GetStdArgc();
1016
1017 // sanity check, this should never happen
1018 if (argc > stdargc) {
1019 JLI_TraceLauncher("Warning: app args is larger than the original, %d %d\n", argc, stdargc);
1020 JLI_TraceLauncher("passing arguments as-is.\n");
1021 return NewPlatformStringArray(env, strv, argc);
1022 }
1023
1024 // sanity check, match the args we have, to the holy grail
1025 idx = JLI_GetAppArgIndex();
1026
1027 // First arg index is NOT_FOUND
1028 if (idx < 0) {
1029 // The only allowed value should be NOT_FOUND (-1) unless another change introduces
1030 // a different negative index
1031 assert (idx == -1);
1032 JLI_TraceLauncher("Warning: first app arg index not found, %d\n", idx);
1033 JLI_TraceLauncher("passing arguments as-is.\n");
1034 return NewPlatformStringArray(env, strv, argc);
1035 }
1036
1037 isTool = (idx == 0);
1038 if (isTool) { idx++; } // skip tool name
1039 JLI_TraceLauncher("AppArgIndex: %d points to %s\n", idx, stdargs[idx].arg);
1040
1041 appArgIdx = calloc(argc, sizeof(int));
1042 for (i = idx, j = 0; i < stdargc; i++) {
1043 if (isTool) { // filter -J used by tools to pass JVM options
1044 arg = stdargs[i].arg;
1045 if (arg[0] == '-' && arg[1] == 'J') {
1046 continue;
1047 }
1048 }
1049 appArgIdx[j++] = i;
1050 }
1051 // sanity check, ensure same number of arguments for application
1052 if (j != argc) {
1053 JLI_TraceLauncher("Warning: app args count doesn't match, %d %d\n", j, argc);
1054 JLI_TraceLauncher("passing arguments as-is.\n");
1055 JLI_MemFree(appArgIdx);
1056 return NewPlatformStringArray(env, strv, argc);
1057 }
1058
1059 // make a copy of the args which will be expanded in java if required.
1060 nargv = (char **)JLI_MemAlloc(argc * sizeof(char*));
1061 for (i = 0; i < argc; i++) {
1062 jboolean arg_expand;
1063 j = appArgIdx[i];
1064 arg_expand = (JLI_StrCmp(stdargs[j].arg, strv[i]) == 0)
1065 ? stdargs[j].has_wildcard
1066 : JNI_FALSE;
1067 if (needs_expansion == JNI_FALSE)
1068 needs_expansion = arg_expand;
1069
1070 // indicator char + String + NULL terminator, the java method will strip
1071 // out the first character, the indicator character, so no matter what
1072 // we add the indicator
1073 tlen = 1 + JLI_StrLen(strv[i]) + 1;
1074 nargv[i] = (char *) JLI_MemAlloc(tlen);
1075 if (JLI_Snprintf(nargv[i], tlen, "%c%s", arg_expand ? 'T' : 'F',
1076 strv[i]) < 0) {
1077 return NULL;
1078 }
1079 JLI_TraceLauncher("%s\n", nargv[i]);
1080 }
1081
1082 if (!needs_expansion) {
1083 // clean up any allocated memory and return back the old arguments
1084 for (i = 0 ; i < argc ; i++) {
1085 JLI_MemFree(nargv[i]);
1086 }
1087 JLI_MemFree(nargv);
1088 JLI_MemFree(appArgIdx);
1089 return NewPlatformStringArray(env, strv, argc);
1090 }
1091 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1092 "expandArgs",
1093 "([Ljava/lang/String;)[Ljava/lang/String;"));
1094
1095 // expand the arguments that require expansion, the java method will strip
1096 // out the indicator character.
1097 NULL_CHECK0(inArray = NewPlatformStringArray(env, nargv, argc));
1098 outArray = (*env)->CallStaticObjectMethod(env, cls, mid, inArray);
1099 for (i = 0; i < argc; i++) {
1100 JLI_MemFree(nargv[i]);
1101 }
1102 JLI_MemFree(nargv);
1103 JLI_MemFree(appArgIdx);
1104 return outArray;
1105 }