1 /*
2 * Copyright (c) 1995, 2017, 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 /*
27 * Shared source for 'java' command line tool.
28 *
29 * If JAVA_ARGS is defined, then acts as a launcher for applications. For
30 * instance, the JDK command line tools such as javac and javadoc (see
31 * makefiles for more details) are built with this program. Any arguments
32 * prefixed with '-J' will be passed directly to the 'java' command.
33 */
34
35 /*
36 * One job of the launcher is to remove command line options which the
37 * vm does not understand and will not process. These options include
38 * options which select which style of vm is run (e.g. -client and
39 * -server) as well as options which select the data model to use.
40 * Additionally, for tools which invoke an underlying vm "-J-foo"
41 * options are turned into "-foo" options to the vm. This option
42 * filtering is handled in a number of places in the launcher, some of
43 * it in machine-dependent code. In this file, the function
44 * CheckJvmType removes vm style options and TranslateApplicationArgs
45 * removes "-J" prefixes. The CreateExecutionEnvironment function processes
46 * and removes -d<n> options. On unix, there is a possibility that the running
47 * data model may not match to the desired data model, in this case an exec is
48 * required to start the desired model. If the data models match, then
49 * ParseArguments will remove the -d<n> flags. If the data models do not match
50 * the CreateExecutionEnviroment will remove the -d<n> flags.
51 */
52
53
54 #include "java.h"
55
56 /*
57 * A NOTE TO DEVELOPERS: For performance reasons it is important that
58 * the program image remain relatively small until after SelectVersion
59 * CreateExecutionEnvironment have finished their possibly recursive
60 * processing. Watch everything, but resist all temptations to use Java
61 * interfaces.
62 */
63
64 #define USE_STDERR JNI_TRUE /* we usually print to stderr */
65 #define USE_STDOUT JNI_FALSE
66
67 static jboolean printVersion = JNI_FALSE; /* print and exit */
68 static jboolean showVersion = JNI_FALSE; /* print but continue */
69 static jboolean printUsage = JNI_FALSE; /* print and exit*/
70 static jboolean printTo = USE_STDERR; /* where to print version/usage */
71 static jboolean printXUsage = JNI_FALSE; /* print and exit*/
72 static jboolean dryRun = JNI_FALSE; /* initialize VM and exit */
73 static char *showSettings = NULL; /* print but continue */
74 static jboolean showResolvedModules = JNI_FALSE;
75 static jboolean listModules = JNI_FALSE;
76 static char *describeModule = NULL;
77 static jboolean validateModules = JNI_FALSE;
78
79 static const char *_program_name;
80 static const char *_launcher_name;
81 static jboolean _is_java_args = JNI_FALSE;
82 static jboolean _have_classpath = JNI_FALSE;
83 static const char *_fVersion;
84 static jboolean _wc_enabled = JNI_FALSE;
85
86 /*
87 * Entries for splash screen environment variables.
88 * putenv is performed in SelectVersion. We need
89 * them in memory until UnsetEnv, so they are made static
90 * global instead of auto local.
91 */
92 static char* splash_file_entry = NULL;
93 static char* splash_jar_entry = NULL;
94
95 /*
96 * List of VM options to be specified when the VM is created.
97 */
98 static JavaVMOption *options;
99 static int numOptions, maxOptions;
100
101 /*
102 * Prototypes for functions internal to launcher.
103 */
104 static void SetClassPath(const char *s);
105 static void SetMainModule(const char *s);
106 static void SelectVersion(int argc, char **argv, char **main_class);
107 static void SetJvmEnvironment(int argc, char **argv);
108 static jboolean ParseArguments(int *pargc, char ***pargv,
109 int *pmode, char **pwhat,
110 int *pret, const char *jrepath);
111 static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv,
112 InvocationFunctions *ifn);
113 static jstring NewPlatformString(JNIEnv *env, char *s);
114 static jclass LoadMainClass(JNIEnv *env, int mode, char *name);
115 static jclass GetApplicationClass(JNIEnv *env);
116
117 static void TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv);
118 static jboolean AddApplicationOptions(int cpathc, const char **cpathv);
119 static void SetApplicationClassPath(const char**);
120
121 static void PrintJavaVersion(JNIEnv *env, jboolean extraLF);
122 static void PrintUsage(JNIEnv* env, jboolean doXUsage);
123 static void ShowSettings(JNIEnv* env, char *optString);
124 static void ShowResolvedModules(JNIEnv* env);
125 static void ListModules(JNIEnv* env);
126 static void DescribeModule(JNIEnv* env, char* optString);
127 static jboolean ValidateModules(JNIEnv* env);
128
129 static void SetPaths(int argc, char **argv);
130
131 static void DumpState();
132
133 enum OptionKind {
134 LAUNCHER_OPTION = 0,
135 LAUNCHER_OPTION_WITH_ARGUMENT,
136 LAUNCHER_MAIN_OPTION,
137 VM_LONG_OPTION,
138 VM_LONG_OPTION_WITH_ARGUMENT,
139 VM_OPTION
140 };
141
142 static int GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue);
143 static jboolean IsOptionWithArgument(int argc, char **argv);
144
145 /* Maximum supported entries from jvm.cfg. */
146 #define INIT_MAX_KNOWN_VMS 10
147
148 /* Values for vmdesc.flag */
149 enum vmdesc_flag {
150 VM_UNKNOWN = -1,
151 VM_KNOWN,
152 VM_ALIASED_TO,
153 VM_WARN,
154 VM_ERROR,
155 VM_IF_SERVER_CLASS,
156 VM_IGNORE
157 };
158
159 struct vmdesc {
160 char *name;
161 int flag;
162 char *alias;
163 char *server_class;
164 };
165 static struct vmdesc *knownVMs = NULL;
166 static int knownVMsCount = 0;
167 static int knownVMsLimit = 0;
168
169 static void GrowKnownVMs(int minimum);
170 static int KnownVMIndex(const char* name);
171 static void FreeKnownVMs();
172 static jboolean IsWildCardEnabled();
173
174 /*
175 * This reports error. VM will not be created and no usage is printed.
176 */
177 #define REPORT_ERROR(AC_ok, AC_failure_message, AC_questionable_arg) \
178 do { \
179 if (!AC_ok) { \
180 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \
181 printUsage = JNI_FALSE; \
182 *pret = 1; \
183 return JNI_FALSE; \
184 } \
185 } while (JNI_FALSE)
186
187 #define ARG_CHECK(AC_arg_count, AC_failure_message, AC_questionable_arg) \
188 do { \
189 if (AC_arg_count < 1) { \
190 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \
191 printUsage = JNI_TRUE; \
192 *pret = 1; \
193 return JNI_TRUE; \
194 } \
195 } while (JNI_FALSE)
196
197 /*
198 * Running Java code in primordial thread caused many problems. We will
199 * create a new thread to invoke JVM. See 6316197 for more information.
200 */
201 static jlong threadStackSize = 0; /* stack size of the new thread */
202 static jlong maxHeapSize = 0; /* max heap size */
203 static jlong initialHeapSize = 0; /* inital heap size */
204
205 /*
206 * A minimum -Xss stack size suitable for all platforms.
207 */
208 #ifndef STACK_SIZE_MINIMUM
209 #define STACK_SIZE_MINIMUM (32 * KB)
210 #endif
211
212 /*
213 * Entry point.
214 */
215 int
216 JLI_Launch(int argc, char ** argv, /* main argc, argc */
217 int jargc, const char** jargv, /* java args */
218 int appclassc, const char** appclassv, /* app classpath */
219 const char* fullversion, /* full version defined */
220 const char* dotversion, /* UNUSED dot version defined */
221 const char* pname, /* program name */
222 const char* lname, /* launcher name */
223 jboolean javaargs, /* JAVA_ARGS */
224 jboolean cpwildcard, /* classpath wildcard*/
225 jboolean javaw, /* windows-only javaw */
226 jint ergo /* unused */
227 )
228 {
229 int mode = LM_UNKNOWN;
230 char *what = NULL;
231 char *main_class = NULL;
232 int ret;
233 InvocationFunctions ifn;
234 jlong start, end;
235 char jvmpath[MAXPATHLEN];
236 char jrepath[MAXPATHLEN];
237 char jvmcfg[MAXPATHLEN];
238
239 _fVersion = fullversion;
240 _launcher_name = lname;
241 _program_name = pname;
242 _is_java_args = javaargs;
243 _wc_enabled = cpwildcard;
244
245 InitLauncher(javaw);
246 DumpState();
247 if (JLI_IsTraceLauncher()) {
248 int i;
249 printf("Command line args:\n");
250 for (i = 0; i < argc ; i++) {
251 printf("argv[%d] = %s\n", i, argv[i]);
252 }
253 AddOption("-Dsun.java.launcher.diag=true", NULL);
254 }
255
256 /*
257 * SelectVersion() has several responsibilities:
258 *
259 * 1) Disallow specification of another JRE. With 1.9, another
260 * version of the JRE cannot be invoked.
261 * 2) Allow for a JRE version to invoke JDK 1.9 or later. Since
262 * all mJRE directives have been stripped from the request but
263 * the pre 1.9 JRE [ 1.6 thru 1.8 ], it is as if 1.9+ has been
264 * invoked from the command line.
265 */
266 SelectVersion(argc, argv, &main_class);
267
268 CreateExecutionEnvironment(&argc, &argv,
269 jrepath, sizeof(jrepath),
270 jvmpath, sizeof(jvmpath),
271 jvmcfg, sizeof(jvmcfg));
272
273 if (!IsJavaArgs()) {
274 SetJvmEnvironment(argc,argv);
275 }
276
277 ifn.CreateJavaVM = 0;
278 ifn.GetDefaultJavaVMInitArgs = 0;
279
280 if (JLI_IsTraceLauncher()) {
281 start = CounterGet();
282 }
283
284 if (!LoadJavaVM(jvmpath, &ifn)) {
285 return(6);
286 }
287
288 if (JLI_IsTraceLauncher()) {
289 end = CounterGet();
290 }
291
292 JLI_TraceLauncher("%ld micro seconds to LoadJavaVM\n",
293 (long)(jint)Counter2Micros(end-start));
294
295 ++argv;
296 --argc;
297
298 if (IsJavaArgs()) {
299 /* Preprocess wrapper arguments */
300 TranslateApplicationArgs(jargc, jargv, &argc, &argv);
301 if (!AddApplicationOptions(appclassc, appclassv)) {
302 return(1);
303 }
304 } else {
305 /* Set default CLASSPATH */
306 char* cpath = getenv("CLASSPATH");
307 if (cpath != NULL) {
308 SetClassPath(cpath);
309 }
310 }
311
312 /* Parse command line options; if the return value of
313 * ParseArguments is false, the program should exit.
314 */
315 if (!ParseArguments(&argc, &argv, &mode, &what, &ret, jrepath))
316 {
317 return(ret);
318 }
319
320 /* Override class path if -jar flag was specified */
321 if (mode == LM_JAR) {
322 SetClassPath(what); /* Override class path */
323 }
324
325 /* set the -Dsun.java.command pseudo property */
326 SetJavaCommandLineProp(what, argc, argv);
327
328 /* Set the -Dsun.java.launcher pseudo property */
329 SetJavaLauncherProp();
330
331 /* set the -Dsun.java.launcher.* platform properties */
332 SetJavaLauncherPlatformProps();
333
334 return JVMInit(&ifn, threadStackSize, argc, argv, mode, what, ret);
335 }
336 /*
337 * Always detach the main thread so that it appears to have ended when
338 * the application's main method exits. This will invoke the
339 * uncaught exception handler machinery if main threw an
340 * exception. An uncaught exception handler cannot change the
341 * launcher's return code except by calling System.exit.
342 *
343 * Wait for all non-daemon threads to end, then destroy the VM.
344 * This will actually create a trivial new Java waiter thread
345 * named "DestroyJavaVM", but this will be seen as a different
346 * thread from the one that executed main, even though they are
347 * the same C thread. This allows mainThread.join() and
348 * mainThread.isAlive() to work as expected.
349 */
350 #define LEAVE() \
351 do { \
352 if ((*vm)->DetachCurrentThread(vm) != JNI_OK) { \
353 JLI_ReportErrorMessage(JVM_ERROR2); \
354 ret = 1; \
355 } \
356 if (JNI_TRUE) { \
357 (*vm)->DestroyJavaVM(vm); \
358 return ret; \
359 } \
360 } while (JNI_FALSE)
361
362 #define CHECK_EXCEPTION_NULL_LEAVE(CENL_exception) \
363 do { \
364 if ((*env)->ExceptionOccurred(env)) { \
365 JLI_ReportExceptionDescription(env); \
366 LEAVE(); \
367 } \
368 if ((CENL_exception) == NULL) { \
369 JLI_ReportErrorMessage(JNI_ERROR); \
370 LEAVE(); \
371 } \
372 } while (JNI_FALSE)
373
374 #define CHECK_EXCEPTION_LEAVE(CEL_return_value) \
375 do { \
376 if ((*env)->ExceptionOccurred(env)) { \
377 JLI_ReportExceptionDescription(env); \
378 ret = (CEL_return_value); \
379 LEAVE(); \
380 } \
381 } while (JNI_FALSE)
382
383
384 int JNICALL
385 JavaMain(void * _args)
386 {
387 JavaMainArgs *args = (JavaMainArgs *)_args;
388 int argc = args->argc;
389 char **argv = args->argv;
390 int mode = args->mode;
391 char *what = args->what;
392 InvocationFunctions ifn = args->ifn;
393
394 JavaVM *vm = 0;
395 JNIEnv *env = 0;
396 jclass mainClass = NULL;
397 jclass appClass = NULL; // actual application class being launched
398 jmethodID mainID;
399 jobjectArray mainArgs;
400 int ret = 0;
401 jlong start, end;
402
403 RegisterThread();
404
405 /* Initialize the virtual machine */
406 start = CounterGet();
407 if (!InitializeJVM(&vm, &env, &ifn)) {
408 JLI_ReportErrorMessage(JVM_ERROR1);
409 exit(1);
410 }
411
412 if (showSettings != NULL) {
413 ShowSettings(env, showSettings);
414 CHECK_EXCEPTION_LEAVE(1);
415 }
416
417 // show resolved modules and continue
418 if (showResolvedModules) {
419 ShowResolvedModules(env);
420 CHECK_EXCEPTION_LEAVE(1);
421 }
422
423 // list observable modules, then exit
424 if (listModules) {
425 ListModules(env);
426 CHECK_EXCEPTION_LEAVE(1);
427 LEAVE();
428 }
429
430 // describe a module, then exit
431 if (describeModule != NULL) {
432 DescribeModule(env, describeModule);
433 CHECK_EXCEPTION_LEAVE(1);
434 LEAVE();
435 }
436
437 // validate modules on the module path, then exit
438 if (validateModules) {
439 jboolean okay = ValidateModules(env);
440 CHECK_EXCEPTION_LEAVE(1);
441 if (!okay) ret = 1;
442 LEAVE();
443 }
444
445 if (printVersion || showVersion) {
446 PrintJavaVersion(env, showVersion);
447 CHECK_EXCEPTION_LEAVE(0);
448 if (printVersion) {
449 LEAVE();
450 }
451 }
452
453 /* If the user specified neither a class name nor a JAR file */
454 if (printXUsage || printUsage || what == 0 || mode == LM_UNKNOWN) {
455 PrintUsage(env, printXUsage);
456 CHECK_EXCEPTION_LEAVE(1);
457 LEAVE();
458 }
459
460 FreeKnownVMs(); /* after last possible PrintUsage */
461
462 if (JLI_IsTraceLauncher()) {
463 end = CounterGet();
464 JLI_TraceLauncher("%ld micro seconds to InitializeJVM\n",
465 (long)(jint)Counter2Micros(end-start));
466 }
467
468 /* At this stage, argc/argv have the application's arguments */
469 if (JLI_IsTraceLauncher()){
470 int i;
471 printf("%s is '%s'\n", launchModeNames[mode], what);
472 printf("App's argc is %d\n", argc);
473 for (i=0; i < argc; i++) {
474 printf(" argv[%2d] = '%s'\n", i, argv[i]);
475 }
476 }
477
478 ret = 1;
479
480 /*
481 * Get the application's main class. It also checks if the main
482 * method exists.
483 *
484 * See bugid 5030265. The Main-Class name has already been parsed
485 * from the manifest, but not parsed properly for UTF-8 support.
486 * Hence the code here ignores the value previously extracted and
487 * uses the pre-existing code to reextract the value. This is
488 * possibly an end of release cycle expedient. However, it has
489 * also been discovered that passing some character sets through
490 * the environment has "strange" behavior on some variants of
491 * Windows. Hence, maybe the manifest parsing code local to the
492 * launcher should never be enhanced.
493 *
494 * Hence, future work should either:
495 * 1) Correct the local parsing code and verify that the
496 * Main-Class attribute gets properly passed through
497 * all environments,
498 * 2) Remove the vestages of maintaining main_class through
499 * the environment (and remove these comments).
500 *
501 * This method also correctly handles launching existing JavaFX
502 * applications that may or may not have a Main-Class manifest entry.
503 */
504 mainClass = LoadMainClass(env, mode, what);
505 CHECK_EXCEPTION_NULL_LEAVE(mainClass);
506 /*
507 * In some cases when launching an application that needs a helper, e.g., a
508 * JavaFX application with no main method, the mainClass will not be the
509 * applications own main class but rather a helper class. To keep things
510 * consistent in the UI we need to track and report the application main class.
511 */
512 appClass = GetApplicationClass(env);
513 NULL_CHECK_RETURN_VALUE(appClass, -1);
514
515 /* Build platform specific argument array */
516 mainArgs = CreateApplicationArgs(env, argv, argc);
517 CHECK_EXCEPTION_NULL_LEAVE(mainArgs);
518
519 if (dryRun) {
520 ret = 0;
521 LEAVE();
522 }
523
524 /*
525 * PostJVMInit uses the class name as the application name for GUI purposes,
526 * for example, on OSX this sets the application name in the menu bar for
527 * both SWT and JavaFX. So we'll pass the actual application class here
528 * instead of mainClass as that may be a launcher or helper class instead
529 * of the application class.
530 */
531 PostJVMInit(env, appClass, vm);
532 CHECK_EXCEPTION_LEAVE(1);
533
534 /*
535 * The LoadMainClass not only loads the main class, it will also ensure
536 * that the main method's signature is correct, therefore further checking
537 * is not required. The main method is invoked here so that extraneous java
538 * stacks are not in the application stack trace.
539 */
540 mainID = (*env)->GetStaticMethodID(env, mainClass, "main",
541 "([Ljava/lang/String;)V");
542 CHECK_EXCEPTION_NULL_LEAVE(mainID);
543
544 /* Invoke main method. */
545 (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs);
546
547 /*
548 * The launcher's exit code (in the absence of calls to
549 * System.exit) will be non-zero if main threw an exception.
550 */
551 ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1;
552
553 LEAVE();
554 }
555
556 /*
557 * Test if the given name is one of the class path options.
558 */
559 static jboolean
560 IsClassPathOption(const char* name) {
561 return JLI_StrCmp(name, "-classpath") == 0 ||
562 JLI_StrCmp(name, "-cp") == 0 ||
563 JLI_StrCmp(name, "--class-path") == 0;
564 }
565
566 /*
567 * Test if the given name is a launcher option taking the main entry point.
568 */
569 static jboolean
570 IsLauncherMainOption(const char* name) {
571 return JLI_StrCmp(name, "--module") == 0 ||
572 JLI_StrCmp(name, "-m") == 0;
573 }
574
575 /*
576 * Test if the given name is a white-space launcher option.
577 */
578 static jboolean
579 IsLauncherOption(const char* name) {
580 return IsClassPathOption(name) ||
581 IsLauncherMainOption(name) ||
582 JLI_StrCmp(name, "--describe-module") == 0 ||
583 JLI_StrCmp(name, "-d") == 0;
584 }
585
586 /*
587 * Test if the given name is a module-system white-space option that
588 * will be passed to the VM with its corresponding long-form option
589 * name and "=" delimiter.
590 */
591 static jboolean
592 IsModuleOption(const char* name) {
593 return JLI_StrCmp(name, "--module-path") == 0 ||
594 JLI_StrCmp(name, "-p") == 0 ||
595 JLI_StrCmp(name, "--upgrade-module-path") == 0 ||
596 JLI_StrCmp(name, "--add-modules") == 0 ||
597 JLI_StrCmp(name, "--limit-modules") == 0 ||
598 JLI_StrCmp(name, "--add-exports") == 0 ||
599 JLI_StrCmp(name, "--add-opens") == 0 ||
600 JLI_StrCmp(name, "--add-reads") == 0 ||
601 JLI_StrCmp(name, "--patch-module") == 0;
602 }
603
604 static jboolean
605 IsLongFormModuleOption(const char* name) {
606 return JLI_StrCCmp(name, "--module-path=") == 0 ||
607 JLI_StrCCmp(name, "--upgrade-module-path=") == 0 ||
608 JLI_StrCCmp(name, "--add-modules=") == 0 ||
609 JLI_StrCCmp(name, "--limit-modules=") == 0 ||
610 JLI_StrCCmp(name, "--add-exports=") == 0 ||
611 JLI_StrCCmp(name, "--add-reads=") == 0 ||
612 JLI_StrCCmp(name, "--patch-module=") == 0;
613 }
614
615 /*
616 * Test if the given name has a white space option.
617 */
618 jboolean
619 IsWhiteSpaceOption(const char* name) {
620 return IsModuleOption(name) ||
621 IsLauncherOption(name);
622 }
623
624 /*
625 * Checks the command line options to find which JVM type was
626 * specified. If no command line option was given for the JVM type,
627 * the default type is used. The environment variable
628 * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also
629 * checked as ways of specifying which JVM type to invoke.
630 */
631 char *
632 CheckJvmType(int *pargc, char ***argv, jboolean speculative) {
633 int i, argi;
634 int argc;
635 char **newArgv;
636 int newArgvIdx = 0;
637 int isVMType;
638 int jvmidx = -1;
639 char *jvmtype = getenv("JDK_ALTERNATE_VM");
640
641 argc = *pargc;
642
643 /* To make things simpler we always copy the argv array */
644 newArgv = JLI_MemAlloc((argc + 1) * sizeof(char *));
645
646 /* The program name is always present */
647 newArgv[newArgvIdx++] = (*argv)[0];
648
649 for (argi = 1; argi < argc; argi++) {
650 char *arg = (*argv)[argi];
651 isVMType = 0;
652
653 if (IsJavaArgs()) {
654 if (arg[0] != '-') {
655 newArgv[newArgvIdx++] = arg;
656 continue;
657 }
658 } else {
659 if (IsWhiteSpaceOption(arg)) {
660 newArgv[newArgvIdx++] = arg;
661 argi++;
662 if (argi < argc) {
663 newArgv[newArgvIdx++] = (*argv)[argi];
664 }
665 continue;
666 }
667 if (arg[0] != '-') break;
668 }
669
670 /* Did the user pass an explicit VM type? */
671 i = KnownVMIndex(arg);
672 if (i >= 0) {
673 jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */
674 isVMType = 1;
675 *pargc = *pargc - 1;
676 }
677
678 /* Did the user specify an "alternate" VM? */
679 else if (JLI_StrCCmp(arg, "-XXaltjvm=") == 0 || JLI_StrCCmp(arg, "-J-XXaltjvm=") == 0) {
680 isVMType = 1;
681 jvmtype = arg+((arg[1]=='X')? 10 : 12);
682 jvmidx = -1;
683 }
684
685 if (!isVMType) {
686 newArgv[newArgvIdx++] = arg;
687 }
688 }
689
690 /*
691 * Finish copying the arguments if we aborted the above loop.
692 * NOTE that if we aborted via "break" then we did NOT copy the
693 * last argument above, and in addition argi will be less than
694 * argc.
695 */
696 while (argi < argc) {
697 newArgv[newArgvIdx++] = (*argv)[argi];
698 argi++;
699 }
700
701 /* argv is null-terminated */
702 newArgv[newArgvIdx] = 0;
703
704 /* Copy back argv */
705 *argv = newArgv;
706 *pargc = newArgvIdx;
707
708 /* use the default VM type if not specified (no alias processing) */
709 if (jvmtype == NULL) {
710 char* result = knownVMs[0].name+1;
711 JLI_TraceLauncher("Default VM: %s\n", result);
712 return result;
713 }
714
715 /* if using an alternate VM, no alias processing */
716 if (jvmidx < 0)
717 return jvmtype;
718
719 /* Resolve aliases first */
720 {
721 int loopCount = 0;
722 while (knownVMs[jvmidx].flag == VM_ALIASED_TO) {
723 int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias);
724
725 if (loopCount > knownVMsCount) {
726 if (!speculative) {
727 JLI_ReportErrorMessage(CFG_ERROR1);
728 exit(1);
729 } else {
730 return "ERROR";
731 /* break; */
732 }
733 }
734
735 if (nextIdx < 0) {
736 if (!speculative) {
737 JLI_ReportErrorMessage(CFG_ERROR2, knownVMs[jvmidx].alias);
738 exit(1);
739 } else {
740 return "ERROR";
741 }
742 }
743 jvmidx = nextIdx;
744 jvmtype = knownVMs[jvmidx].name+1;
745 loopCount++;
746 }
747 }
748
749 switch (knownVMs[jvmidx].flag) {
750 case VM_WARN:
751 if (!speculative) {
752 JLI_ReportErrorMessage(CFG_WARN1, jvmtype, knownVMs[0].name + 1);
753 }
754 /* fall through */
755 case VM_IGNORE:
756 jvmtype = knownVMs[jvmidx=0].name + 1;
757 /* fall through */
758 case VM_KNOWN:
759 break;
760 case VM_ERROR:
761 if (!speculative) {
762 JLI_ReportErrorMessage(CFG_ERROR3, jvmtype);
763 exit(1);
764 } else {
765 return "ERROR";
766 }
767 }
768
769 return jvmtype;
770 }
771
772 /*
773 * This method must be called before the VM is loaded, primarily
774 * used to parse and set any VM related options or env variables.
775 * This function is non-destructive leaving the argument list intact.
776 */
777 static void
778 SetJvmEnvironment(int argc, char **argv) {
779
780 static const char* NMT_Env_Name = "NMT_LEVEL_";
781 int i;
782 /* process only the launcher arguments */
783 for (i = 0; i < argc; i++) {
784 char *arg = argv[i];
785 /*
786 * Since this must be a VM flag we stop processing once we see
787 * an argument the launcher would not have processed beyond (such
788 * as -version or -h), or an argument that indicates the following
789 * arguments are for the application (i.e. the main class name, or
790 * the -jar argument).
791 */
792 if (i > 0) {
793 char *prev = argv[i - 1];
794 // skip non-dash arg preceded by class path specifiers
795 if (*arg != '-' && IsWhiteSpaceOption(prev)) {
796 continue;
797 }
798
799 if (*arg != '-' || isTerminalOpt(arg)) {
800 return;
801 }
802 }
803 /*
804 * The following case checks for "-XX:NativeMemoryTracking=value".
805 * If value is non null, an environmental variable set to this value
806 * will be created to be used by the JVM.
807 * The argument is passed to the JVM, which will check validity.
808 * The JVM is responsible for removing the env variable.
809 */
810 if (JLI_StrCCmp(arg, "-XX:NativeMemoryTracking=") == 0) {
811 int retval;
812 // get what follows this parameter, include "="
813 size_t pnlen = JLI_StrLen("-XX:NativeMemoryTracking=");
814 if (JLI_StrLen(arg) > pnlen) {
815 char* value = arg + pnlen;
816 size_t pbuflen = pnlen + JLI_StrLen(value) + 10; // 10 max pid digits
817
818 /*
819 * ensures that malloc successful
820 * DONT JLI_MemFree() pbuf. JLI_PutEnv() uses system call
821 * that could store the address.
822 */
823 char * pbuf = (char*)JLI_MemAlloc(pbuflen);
824
825 JLI_Snprintf(pbuf, pbuflen, "%s%d=%s", NMT_Env_Name, JLI_GetPid(), value);
826 retval = JLI_PutEnv(pbuf);
827 if (JLI_IsTraceLauncher()) {
828 char* envName;
829 char* envBuf;
830
831 // ensures that malloc successful
832 envName = (char*)JLI_MemAlloc(pbuflen);
833 JLI_Snprintf(envName, pbuflen, "%s%d", NMT_Env_Name, JLI_GetPid());
834
835 printf("TRACER_MARKER: NativeMemoryTracking: env var is %s\n",envName);
836 printf("TRACER_MARKER: NativeMemoryTracking: putenv arg %s\n",pbuf);
837 envBuf = getenv(envName);
838 printf("TRACER_MARKER: NativeMemoryTracking: got value %s\n",envBuf);
839 free(envName);
840 }
841 }
842 }
843 }
844 }
845
846 /* copied from HotSpot function "atomll()" */
847 static int
848 parse_size(const char *s, jlong *result) {
849 jlong n = 0;
850 int args_read = sscanf(s, JLONG_FORMAT_SPECIFIER, &n);
851 if (args_read != 1) {
852 return 0;
853 }
854 while (*s != '\0' && *s >= '0' && *s <= '9') {
855 s++;
856 }
857 // 4705540: illegal if more characters are found after the first non-digit
858 if (JLI_StrLen(s) > 1) {
859 return 0;
860 }
861 switch (*s) {
862 case 'T': case 't':
863 *result = n * GB * KB;
864 return 1;
865 case 'G': case 'g':
866 *result = n * GB;
867 return 1;
868 case 'M': case 'm':
869 *result = n * MB;
870 return 1;
871 case 'K': case 'k':
872 *result = n * KB;
873 return 1;
874 case '\0':
875 *result = n;
876 return 1;
877 default:
878 /* Create JVM with default stack and let VM handle malformed -Xss string*/
879 return 0;
880 }
881 }
882
883 /*
884 * Adds a new VM option with the given name and value.
885 */
886 void
887 AddOption(char *str, void *info)
888 {
889 /*
890 * Expand options array if needed to accommodate at least one more
891 * VM option.
892 */
893 if (numOptions >= maxOptions) {
894 if (options == 0) {
895 maxOptions = 4;
896 options = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
897 } else {
898 JavaVMOption *tmp;
899 maxOptions *= 2;
900 tmp = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
901 memcpy(tmp, options, numOptions * sizeof(JavaVMOption));
902 JLI_MemFree(options);
903 options = tmp;
904 }
905 }
906 options[numOptions].optionString = str;
907 options[numOptions++].extraInfo = info;
908
909 if (JLI_StrCCmp(str, "-Xss") == 0) {
910 jlong tmp;
911 if (parse_size(str + 4, &tmp)) {
912 threadStackSize = tmp;
913 /*
914 * Make sure the thread stack size is big enough that we won't get a stack
915 * overflow before the JVM startup code can check to make sure the stack
916 * is big enough.
917 */
918 if (threadStackSize < (jlong)STACK_SIZE_MINIMUM) {
919 threadStackSize = STACK_SIZE_MINIMUM;
920 }
921 }
922 }
923
924 if (JLI_StrCCmp(str, "-Xmx") == 0) {
925 jlong tmp;
926 if (parse_size(str + 4, &tmp)) {
927 maxHeapSize = tmp;
928 }
929 }
930
931 if (JLI_StrCCmp(str, "-Xms") == 0) {
932 jlong tmp;
933 if (parse_size(str + 4, &tmp)) {
934 initialHeapSize = tmp;
935 }
936 }
937 }
938
939 static void
940 SetClassPath(const char *s)
941 {
942 char *def;
943 const char *orig = s;
944 static const char format[] = "-Djava.class.path=%s";
945 /*
946 * usually we should not get a null pointer, but there are cases where
947 * we might just get one, in which case we simply ignore it, and let the
948 * caller deal with it
949 */
950 if (s == NULL)
951 return;
952 s = JLI_WildcardExpandClasspath(s);
953 if (sizeof(format) - 2 + JLI_StrLen(s) < JLI_StrLen(s))
954 // s is became corrupted after expanding wildcards
955 return;
956 def = JLI_MemAlloc(sizeof(format)
957 - 2 /* strlen("%s") */
958 + JLI_StrLen(s));
959 sprintf(def, format, s);
960 AddOption(def, NULL);
961 if (s != orig)
962 JLI_MemFree((char *) s);
963 _have_classpath = JNI_TRUE;
964 }
965
966 static void
967 AddLongFormOption(const char *option, const char *arg)
968 {
969 static const char format[] = "%s=%s";
970 char *def;
971 size_t def_len;
972
973 def_len = JLI_StrLen(option) + 1 + JLI_StrLen(arg) + 1;
974 def = JLI_MemAlloc(def_len);
975 JLI_Snprintf(def, def_len, format, option, arg);
976 AddOption(def, NULL);
977 }
978
979 static void
980 SetMainModule(const char *s)
981 {
982 static const char format[] = "-Djdk.module.main=%s";
983 char* slash = JLI_StrChr(s, '/');
984 size_t s_len, def_len;
985 char *def;
986
987 /* value may be <module> or <module>/<mainclass> */
988 if (slash == NULL) {
989 s_len = JLI_StrLen(s);
990 } else {
991 s_len = (size_t) (slash - s);
992 }
993 def_len = sizeof(format)
994 - 2 /* strlen("%s") */
995 + s_len;
996 def = JLI_MemAlloc(def_len);
997 JLI_Snprintf(def, def_len, format, s);
998 AddOption(def, NULL);
999 }
1000
1001 /*
1002 * The SelectVersion() routine ensures that an appropriate version of
1003 * the JRE is running. The specification for the appropriate version
1004 * is obtained from either the manifest of a jar file (preferred) or
1005 * from command line options.
1006 * The routine also parses splash screen command line options and
1007 * passes on their values in private environment variables.
1008 */
1009 static void
1010 SelectVersion(int argc, char **argv, char **main_class)
1011 {
1012 char *arg;
1013 char *operand;
1014 char *version = NULL;
1015 char *jre = NULL;
1016 int jarflag = 0;
1017 int headlessflag = 0;
1018 int restrict_search = -1; /* -1 implies not known */
1019 manifest_info info;
1020 char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "=";
1021 char *splash_file_name = NULL;
1022 char *splash_jar_name = NULL;
1023 char *env_in;
1024 int res;
1025 jboolean has_arg;
1026
1027 /*
1028 * If the version has already been selected, set *main_class
1029 * with the value passed through the environment (if any) and
1030 * simply return.
1031 */
1032
1033 /*
1034 * This environmental variable can be set by mJRE capable JREs
1035 * [ 1.5 thru 1.8 ]. All other aspects of mJRE processing have been
1036 * stripped by those JREs. This environmental variable allows 1.9+
1037 * JREs to be started by these mJRE capable JREs.
1038 * Note that mJRE directives in the jar manifest file would have been
1039 * ignored for a JRE started by another JRE...
1040 * .. skipped for JRE 1.5 and beyond.
1041 * .. not even checked for pre 1.5.
1042 */
1043 if ((env_in = getenv(ENV_ENTRY)) != NULL) {
1044 if (*env_in != '\0')
1045 *main_class = JLI_StringDup(env_in);
1046 return;
1047 }
1048
1049 /*
1050 * Scan through the arguments for options relevant to multiple JRE
1051 * support. Multiple JRE support existed in JRE versions 1.5 thru 1.8.
1052 *
1053 * This capability is no longer available with JRE versions 1.9 and later.
1054 * These command line options are reported as errors.
1055 */
1056
1057 argc--;
1058 argv++;
1059 while ((arg = *argv) != 0 && *arg == '-') {
1060 has_arg = IsOptionWithArgument(argc, argv);
1061 if (JLI_StrCCmp(arg, "-version:") == 0) {
1062 JLI_ReportErrorMessage(SPC_ERROR1);
1063 } else if (JLI_StrCmp(arg, "-jre-restrict-search") == 0) {
1064 JLI_ReportErrorMessage(SPC_ERROR2);
1065 } else if (JLI_StrCmp(arg, "-jre-no-restrict-search") == 0) {
1066 JLI_ReportErrorMessage(SPC_ERROR2);
1067 } else {
1068 if (JLI_StrCmp(arg, "-jar") == 0)
1069 jarflag = 1;
1070 if (IsWhiteSpaceOption(arg)) {
1071 if (has_arg) {
1072 argc--;
1073 argv++;
1074 arg = *argv;
1075 }
1076 }
1077
1078 /*
1079 * Checking for headless toolkit option in the some way as AWT does:
1080 * "true" means true and any other value means false
1081 */
1082 if (JLI_StrCmp(arg, "-Djava.awt.headless=true") == 0) {
1083 headlessflag = 1;
1084 } else if (JLI_StrCCmp(arg, "-Djava.awt.headless=") == 0) {
1085 headlessflag = 0;
1086 } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1087 splash_file_name = arg+8;
1088 }
1089 }
1090 argc--;
1091 argv++;
1092 }
1093 if (argc <= 0) { /* No operand? Possibly legit with -[full]version */
1094 operand = NULL;
1095 } else {
1096 argc--;
1097 operand = *argv++;
1098 }
1099
1100 /*
1101 * If there is a jar file, read the manifest. If the jarfile can't be
1102 * read, the manifest can't be read from the jar file, or the manifest
1103 * is corrupt, issue the appropriate error messages and exit.
1104 *
1105 * Even if there isn't a jar file, construct a manifest_info structure
1106 * containing the command line information. It's a convenient way to carry
1107 * this data around.
1108 */
1109 if (jarflag && operand) {
1110 if ((res = JLI_ParseManifest(operand, &info)) != 0) {
1111 if (res == -1)
1112 JLI_ReportErrorMessage(JAR_ERROR2, operand);
1113 else
1114 JLI_ReportErrorMessage(JAR_ERROR3, operand);
1115 exit(1);
1116 }
1117
1118 /*
1119 * Command line splash screen option should have precedence
1120 * over the manifest, so the manifest data is used only if
1121 * splash_file_name has not been initialized above during command
1122 * line parsing
1123 */
1124 if (!headlessflag && !splash_file_name && info.splashscreen_image_file_name) {
1125 splash_file_name = info.splashscreen_image_file_name;
1126 splash_jar_name = operand;
1127 }
1128 } else {
1129 info.manifest_version = NULL;
1130 info.main_class = NULL;
1131 info.jre_version = NULL;
1132 info.jre_restrict_search = 0;
1133 }
1134
1135 /*
1136 * Passing on splash screen info in environment variables
1137 */
1138 if (splash_file_name && !headlessflag) {
1139 char* splash_file_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_FILE_ENV_ENTRY "=")+JLI_StrLen(splash_file_name)+1);
1140 JLI_StrCpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "=");
1141 JLI_StrCat(splash_file_entry, splash_file_name);
1142 putenv(splash_file_entry);
1143 }
1144 if (splash_jar_name && !headlessflag) {
1145 char* splash_jar_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_JAR_ENV_ENTRY "=")+JLI_StrLen(splash_jar_name)+1);
1146 JLI_StrCpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "=");
1147 JLI_StrCat(splash_jar_entry, splash_jar_name);
1148 putenv(splash_jar_entry);
1149 }
1150
1151
1152 /*
1153 * "Valid" returns (other than unrecoverable errors) follow. Set
1154 * main_class as a side-effect of this routine.
1155 */
1156 if (info.main_class != NULL)
1157 *main_class = JLI_StringDup(info.main_class);
1158
1159 if (info.jre_version == NULL) {
1160 JLI_FreeManifest();
1161 return;
1162 }
1163
1164 }
1165
1166 /*
1167 * Test if the current argv is an option, i.e. with a leading `-`
1168 * and followed with an argument without a leading `-`.
1169 */
1170 static jboolean
1171 IsOptionWithArgument(int argc, char** argv) {
1172 char* option;
1173 char* arg;
1174
1175 if (argc <= 1)
1176 return JNI_FALSE;
1177
1178 option = *argv;
1179 arg = *(argv+1);
1180 return *option == '-' && *arg != '-';
1181 }
1182
1183 /*
1184 * Gets the option, and its argument if the option has an argument.
1185 * It will update *pargc, **pargv to the next option.
1186 */
1187 static int
1188 GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue) {
1189 int argc = *pargc;
1190 char** argv = *pargv;
1191 char* arg = *argv;
1192
1193 char* option = arg;
1194 char* value = NULL;
1195 char* equals = NULL;
1196 int kind = LAUNCHER_OPTION;
1197 jboolean has_arg = JNI_FALSE;
1198
1199 // check if this option may be a white-space option with an argument
1200 has_arg = IsOptionWithArgument(argc, argv);
1201
1202 argv++; --argc;
1203 if (IsLauncherOption(arg)) {
1204 if (has_arg) {
1205 value = *argv;
1206 argv++; --argc;
1207 }
1208 kind = IsLauncherMainOption(arg) ? LAUNCHER_MAIN_OPTION
1209 : LAUNCHER_OPTION_WITH_ARGUMENT;
1210 } else if (IsModuleOption(arg)) {
1211 kind = VM_LONG_OPTION_WITH_ARGUMENT;
1212 if (has_arg) {
1213 value = *argv;
1214 argv++; --argc;
1215 }
1216
1217 /*
1218 * Support short form alias
1219 */
1220 if (JLI_StrCmp(arg, "-p") == 0) {
1221 option = "--module-path";
1222 }
1223
1224 } else if (JLI_StrCCmp(arg, "--") == 0 && (equals = JLI_StrChr(arg, '=')) != NULL) {
1225 value = equals+1;
1226 if (JLI_StrCCmp(arg, "--describe-module=") == 0 ||
1227 JLI_StrCCmp(arg, "--module=") == 0 ||
1228 JLI_StrCCmp(arg, "--class-path=") == 0) {
1229 kind = LAUNCHER_OPTION_WITH_ARGUMENT;
1230 } else {
1231 kind = VM_LONG_OPTION;
1232 }
1233 }
1234
1235 *pargc = argc;
1236 *pargv = argv;
1237 *poption = option;
1238 *pvalue = value;
1239 return kind;
1240 }
1241
1242 /*
1243 * Parses command line arguments. Returns JNI_FALSE if launcher
1244 * should exit without starting vm, returns JNI_TRUE if vm needs
1245 * to be started to process given options. *pret (the launcher
1246 * process return value) is set to 0 for a normal exit.
1247 */
1248 static jboolean
1249 ParseArguments(int *pargc, char ***pargv,
1250 int *pmode, char **pwhat,
1251 int *pret, const char *jrepath)
1252 {
1253 int argc = *pargc;
1254 char **argv = *pargv;
1255 int mode = LM_UNKNOWN;
1256 char *arg;
1257
1258 *pret = 0;
1259
1260 while ((arg = *argv) != 0 && *arg == '-') {
1261 char *option = NULL;
1262 char *value = NULL;
1263 int kind = GetOpt(&argc, &argv, &option, &value);
1264 jboolean has_arg = value != NULL && JLI_StrLen(value) > 0;
1265 jboolean has_arg_any_len = value != NULL;
1266
1267 /*
1268 * Option to set main entry point
1269 */
1270 if (JLI_StrCmp(arg, "-jar") == 0) {
1271 ARG_CHECK(argc, ARG_ERROR2, arg);
1272 mode = LM_JAR;
1273 } else if (JLI_StrCmp(arg, "--module") == 0 ||
1274 JLI_StrCCmp(arg, "--module=") == 0 ||
1275 JLI_StrCmp(arg, "-m") == 0) {
1276 REPORT_ERROR (has_arg, ARG_ERROR5, arg);
1277 SetMainModule(value);
1278 mode = LM_MODULE;
1279 if (has_arg) {
1280 *pwhat = value;
1281 break;
1282 }
1283 } else if (JLI_StrCmp(arg, "--class-path") == 0 ||
1284 JLI_StrCCmp(arg, "--class-path=") == 0 ||
1285 JLI_StrCmp(arg, "-classpath") == 0 ||
1286 JLI_StrCmp(arg, "-cp") == 0) {
1287 REPORT_ERROR (has_arg_any_len, ARG_ERROR1, arg);
1288 SetClassPath(value);
1289 mode = LM_CLASS;
1290 } else if (JLI_StrCmp(arg, "--list-modules") == 0) {
1291 listModules = JNI_TRUE;
1292 } else if (JLI_StrCmp(arg, "--show-resolved-modules") == 0) {
1293 showResolvedModules = JNI_TRUE;
1294 } else if (JLI_StrCmp(arg, "--validate-modules") == 0) {
1295 AddOption("-Djdk.module.minimumBoot=true", NULL);
1296 validateModules = JNI_TRUE;
1297 } else if (JLI_StrCmp(arg, "--describe-module") == 0 ||
1298 JLI_StrCCmp(arg, "--describe-module=") == 0 ||
1299 JLI_StrCmp(arg, "-d") == 0) {
1300 REPORT_ERROR (has_arg_any_len, ARG_ERROR12, arg);
1301 describeModule = value;
1302 /*
1303 * Parse white-space options
1304 */
1305 } else if (has_arg) {
1306 if (kind == VM_LONG_OPTION) {
1307 AddOption(option, NULL);
1308 } else if (kind == VM_LONG_OPTION_WITH_ARGUMENT) {
1309 AddLongFormOption(option, value);
1310 }
1311 /*
1312 * Error missing argument
1313 */
1314 } else if (!has_arg && (JLI_StrCmp(arg, "--module-path") == 0 ||
1315 JLI_StrCmp(arg, "-p") == 0 ||
1316 JLI_StrCmp(arg, "--upgrade-module-path") == 0)) {
1317 REPORT_ERROR (has_arg, ARG_ERROR4, arg);
1318
1319 } else if (!has_arg && (IsModuleOption(arg) || IsLongFormModuleOption(arg))) {
1320 REPORT_ERROR (has_arg, ARG_ERROR6, arg);
1321 /*
1322 * The following cases will cause the argument parsing to stop
1323 */
1324 } else if (JLI_StrCmp(arg, "-help") == 0 ||
1325 JLI_StrCmp(arg, "-h") == 0 ||
1326 JLI_StrCmp(arg, "-?") == 0) {
1327 printUsage = JNI_TRUE;
1328 return JNI_TRUE;
1329 } else if (JLI_StrCmp(arg, "--help") == 0) {
1330 printUsage = JNI_TRUE;
1331 printTo = USE_STDOUT;
1332 return JNI_TRUE;
1333 } else if (JLI_StrCmp(arg, "-version") == 0) {
1334 printVersion = JNI_TRUE;
1335 return JNI_TRUE;
1336 } else if (JLI_StrCmp(arg, "--version") == 0) {
1337 printVersion = JNI_TRUE;
1338 printTo = USE_STDOUT;
1339 return JNI_TRUE;
1340 } else if (JLI_StrCmp(arg, "-showversion") == 0) {
1341 showVersion = JNI_TRUE;
1342 } else if (JLI_StrCmp(arg, "--show-version") == 0) {
1343 showVersion = JNI_TRUE;
1344 printTo = USE_STDOUT;
1345 } else if (JLI_StrCmp(arg, "--dry-run") == 0) {
1346 dryRun = JNI_TRUE;
1347 } else if (JLI_StrCmp(arg, "-X") == 0) {
1348 printXUsage = JNI_TRUE;
1349 return JNI_TRUE;
1350 } else if (JLI_StrCmp(arg, "--help-extra") == 0) {
1351 printXUsage = JNI_TRUE;
1352 printTo = USE_STDOUT;
1353 return JNI_TRUE;
1354 /*
1355 * The following case checks for -XshowSettings OR -XshowSetting:SUBOPT.
1356 * In the latter case, any SUBOPT value not recognized will default to "all"
1357 */
1358 } else if (JLI_StrCmp(arg, "-XshowSettings") == 0 ||
1359 JLI_StrCCmp(arg, "-XshowSettings:") == 0) {
1360 showSettings = arg;
1361 } else if (JLI_StrCmp(arg, "-Xdiag") == 0) {
1362 AddOption("-Dsun.java.launcher.diag=true", NULL);
1363 } else if (JLI_StrCmp(arg, "--show-module-resolution") == 0) {
1364 AddOption("-Djdk.module.showModuleResolution=true", NULL);
1365 /*
1366 * The following case provide backward compatibility with old-style
1367 * command line options.
1368 */
1369 } else if (JLI_StrCmp(arg, "-fullversion") == 0) {
1370 JLI_ReportMessage("%s full version \"%s\"", _launcher_name, GetFullVersion());
1371 return JNI_FALSE;
1372 } else if (JLI_StrCmp(arg, "--full-version") == 0) {
1373 JLI_ShowMessage("%s %s", _launcher_name, GetFullVersion());
1374 return JNI_FALSE;
1375 } else if (JLI_StrCmp(arg, "-verbosegc") == 0) {
1376 AddOption("-verbose:gc", NULL);
1377 } else if (JLI_StrCmp(arg, "-t") == 0) {
1378 AddOption("-Xt", NULL);
1379 } else if (JLI_StrCmp(arg, "-tm") == 0) {
1380 AddOption("-Xtm", NULL);
1381 } else if (JLI_StrCmp(arg, "-debug") == 0) {
1382 AddOption("-Xdebug", NULL);
1383 } else if (JLI_StrCmp(arg, "-noclassgc") == 0) {
1384 AddOption("-Xnoclassgc", NULL);
1385 } else if (JLI_StrCmp(arg, "-Xfuture") == 0) {
1386 AddOption("-Xverify:all", NULL);
1387 } else if (JLI_StrCmp(arg, "-verify") == 0) {
1388 AddOption("-Xverify:all", NULL);
1389 } else if (JLI_StrCmp(arg, "-verifyremote") == 0) {
1390 AddOption("-Xverify:remote", NULL);
1391 } else if (JLI_StrCmp(arg, "-noverify") == 0) {
1392 AddOption("-Xverify:none", NULL);
1393 } else if (JLI_StrCCmp(arg, "-ss") == 0 ||
1394 JLI_StrCCmp(arg, "-oss") == 0 ||
1395 JLI_StrCCmp(arg, "-ms") == 0 ||
1396 JLI_StrCCmp(arg, "-mx") == 0) {
1397 char *tmp = JLI_MemAlloc(JLI_StrLen(arg) + 6);
1398 sprintf(tmp, "-X%s", arg + 1); /* skip '-' */
1399 AddOption(tmp, NULL);
1400 } else if (JLI_StrCmp(arg, "-checksource") == 0 ||
1401 JLI_StrCmp(arg, "-cs") == 0 ||
1402 JLI_StrCmp(arg, "-noasyncgc") == 0) {
1403 /* No longer supported */
1404 JLI_ReportErrorMessage(ARG_WARN, arg);
1405 } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1406 ; /* Ignore machine independent options already handled */
1407 } else if (ProcessPlatformOption(arg)) {
1408 ; /* Processing of platform dependent options */
1409 } else {
1410 /* java.class.path set on the command line */
1411 if (JLI_StrCCmp(arg, "-Djava.class.path=") == 0) {
1412 _have_classpath = JNI_TRUE;
1413 }
1414 AddOption(arg, NULL);
1415 }
1416 }
1417
1418 if (*pwhat == NULL && --argc >= 0) {
1419 *pwhat = *argv++;
1420 }
1421
1422 if (*pwhat == NULL) {
1423 /* LM_UNKNOWN okay for options that exit */
1424 if (!listModules && !describeModule && !validateModules) {
1425 *pret = 1;
1426 }
1427 } else if (mode == LM_UNKNOWN) {
1428 /* default to LM_CLASS if -m, -jar and -cp options are
1429 * not specified */
1430 if (!_have_classpath) {
1431 SetClassPath(".");
1432 }
1433 mode = LM_CLASS;
1434 }
1435
1436 if (argc >= 0) {
1437 *pargc = argc;
1438 *pargv = argv;
1439 }
1440
1441 *pmode = mode;
1442
1443 return JNI_TRUE;
1444 }
1445
1446 /*
1447 * Initializes the Java Virtual Machine. Also frees options array when
1448 * finished.
1449 */
1450 static jboolean
1451 InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn)
1452 {
1453 JavaVMInitArgs args;
1454 jint r;
1455
1456 memset(&args, 0, sizeof(args));
1457 args.version = JNI_VERSION_1_2;
1458 args.nOptions = numOptions;
1459 args.options = options;
1460 args.ignoreUnrecognized = JNI_FALSE;
1461
1462 if (JLI_IsTraceLauncher()) {
1463 int i = 0;
1464 printf("JavaVM args:\n ");
1465 printf("version 0x%08lx, ", (long)args.version);
1466 printf("ignoreUnrecognized is %s, ",
1467 args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE");
1468 printf("nOptions is %ld\n", (long)args.nOptions);
1469 for (i = 0; i < numOptions; i++)
1470 printf(" option[%2d] = '%s'\n",
1471 i, args.options[i].optionString);
1472 }
1473
1474 r = ifn->CreateJavaVM(pvm, (void **)penv, &args);
1475 JLI_MemFree(options);
1476 return r == JNI_OK;
1477 }
1478
1479 static jclass helperClass = NULL;
1480
1481 jclass
1482 GetLauncherHelperClass(JNIEnv *env)
1483 {
1484 if (helperClass == NULL) {
1485 NULL_CHECK0(helperClass = FindBootStrapClass(env,
1486 "sun/launcher/LauncherHelper"));
1487 }
1488 return helperClass;
1489 }
1490
1491 static jmethodID makePlatformStringMID = NULL;
1492 /*
1493 * Returns a new Java string object for the specified platform string.
1494 */
1495 static jstring
1496 NewPlatformString(JNIEnv *env, char *s)
1497 {
1498 int len = (int)JLI_StrLen(s);
1499 jbyteArray ary;
1500 jclass cls = GetLauncherHelperClass(env);
1501 NULL_CHECK0(cls);
1502 if (s == NULL)
1503 return 0;
1504
1505 ary = (*env)->NewByteArray(env, len);
1506 if (ary != 0) {
1507 jstring str = 0;
1508 (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s);
1509 if (!(*env)->ExceptionOccurred(env)) {
1510 if (makePlatformStringMID == NULL) {
1511 NULL_CHECK0(makePlatformStringMID = (*env)->GetStaticMethodID(env,
1512 cls, "makePlatformString", "(Z[B)Ljava/lang/String;"));
1513 }
1514 str = (*env)->CallStaticObjectMethod(env, cls,
1515 makePlatformStringMID, USE_STDERR, ary);
1516 (*env)->DeleteLocalRef(env, ary);
1517 return str;
1518 }
1519 }
1520 return 0;
1521 }
1522
1523 /*
1524 * Returns a new array of Java string objects for the specified
1525 * array of platform strings.
1526 */
1527 jobjectArray
1528 NewPlatformStringArray(JNIEnv *env, char **strv, int strc)
1529 {
1530 jarray cls;
1531 jarray ary;
1532 int i;
1533
1534 NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String"));
1535 NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0));
1536 CHECK_EXCEPTION_RETURN_VALUE(0);
1537 for (i = 0; i < strc; i++) {
1538 jstring str = NewPlatformString(env, *strv++);
1539 NULL_CHECK0(str);
1540 (*env)->SetObjectArrayElement(env, ary, i, str);
1541 (*env)->DeleteLocalRef(env, str);
1542 }
1543 return ary;
1544 }
1545
1546 /*
1547 * Loads a class and verifies that the main class is present and it is ok to
1548 * call it for more details refer to the java implementation.
1549 */
1550 static jclass
1551 LoadMainClass(JNIEnv *env, int mode, char *name)
1552 {
1553 jmethodID mid;
1554 jstring str;
1555 jobject result;
1556 jlong start, end;
1557 jclass cls = GetLauncherHelperClass(env);
1558 NULL_CHECK0(cls);
1559 if (JLI_IsTraceLauncher()) {
1560 start = CounterGet();
1561 }
1562 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1563 "checkAndLoadMain",
1564 "(ZILjava/lang/String;)Ljava/lang/Class;"));
1565
1566 NULL_CHECK0(str = NewPlatformString(env, name));
1567 NULL_CHECK0(result = (*env)->CallStaticObjectMethod(env, cls, mid,
1568 USE_STDERR, mode, str));
1569
1570 if (JLI_IsTraceLauncher()) {
1571 end = CounterGet();
1572 printf("%ld micro seconds to load main class\n",
1573 (long)(jint)Counter2Micros(end-start));
1574 printf("----%s----\n", JLDEBUG_ENV_ENTRY);
1575 }
1576
1577 return (jclass)result;
1578 }
1579
1580 static jclass
1581 GetApplicationClass(JNIEnv *env)
1582 {
1583 jmethodID mid;
1584 jclass cls = GetLauncherHelperClass(env);
1585 NULL_CHECK0(cls);
1586 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1587 "getApplicationClass",
1588 "()Ljava/lang/Class;"));
1589
1590 return (*env)->CallStaticObjectMethod(env, cls, mid);
1591 }
1592
1593 static char* expandWildcardOnLongOpt(char* arg) {
1594 char *p, *value;
1595 size_t optLen, valueLen;
1596 p = JLI_StrChr(arg, '=');
1597
1598 if (p == NULL || p[1] == '\0') {
1599 JLI_ReportErrorMessage(ARG_ERROR1, arg);
1600 exit(1);
1601 }
1602 p++;
1603 value = (char *) JLI_WildcardExpandClasspath(p);
1604 if (p == value) {
1605 // no wildcard
1606 return arg;
1607 }
1608
1609 optLen = p - arg;
1610 valueLen = JLI_StrLen(value);
1611 p = JLI_MemAlloc(optLen + valueLen + 1);
1612 memcpy(p, arg, optLen);
1613 memcpy(p + optLen, value, valueLen);
1614 p[optLen + valueLen] = '\0';
1615 return p;
1616 }
1617
1618 /*
1619 * For tools, convert command line args thus:
1620 * javac -cp foo:foo/"*" -J-ms32m ...
1621 * java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ...
1622 *
1623 * Takes 4 parameters, and returns the populated arguments
1624 */
1625 static void
1626 TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv)
1627 {
1628 int argc = *pargc;
1629 char **argv = *pargv;
1630 int nargc = argc + jargc;
1631 char **nargv = JLI_MemAlloc((nargc + 1) * sizeof(char *));
1632 int i;
1633
1634 *pargc = nargc;
1635 *pargv = nargv;
1636
1637 /* Copy the VM arguments (i.e. prefixed with -J) */
1638 for (i = 0; i < jargc; i++) {
1639 const char *arg = jargv[i];
1640 if (arg[0] == '-' && arg[1] == 'J') {
1641 *nargv++ = ((arg + 2) == NULL) ? NULL : JLI_StringDup(arg + 2);
1642 }
1643 }
1644
1645 for (i = 0; i < argc; i++) {
1646 char *arg = argv[i];
1647 if (arg[0] == '-' && arg[1] == 'J') {
1648 if (arg[2] == '\0') {
1649 JLI_ReportErrorMessage(ARG_ERROR3);
1650 exit(1);
1651 }
1652 *nargv++ = arg + 2;
1653 }
1654 }
1655
1656 /* Copy the rest of the arguments */
1657 for (i = 0; i < jargc ; i++) {
1658 const char *arg = jargv[i];
1659 if (arg[0] != '-' || arg[1] != 'J') {
1660 *nargv++ = (arg == NULL) ? NULL : JLI_StringDup(arg);
1661 }
1662 }
1663 for (i = 0; i < argc; i++) {
1664 char *arg = argv[i];
1665 if (arg[0] == '-') {
1666 if (arg[1] == 'J')
1667 continue;
1668 if (IsWildCardEnabled()) {
1669 if (IsClassPathOption(arg) && i < argc - 1) {
1670 *nargv++ = arg;
1671 *nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]);
1672 i++;
1673 continue;
1674 }
1675 if (JLI_StrCCmp(arg, "--class-path=") == 0) {
1676 *nargv++ = expandWildcardOnLongOpt(arg);
1677 continue;
1678 }
1679 }
1680 }
1681 *nargv++ = arg;
1682 }
1683 *nargv = 0;
1684 }
1685
1686 /*
1687 * For our tools, we try to add 3 VM options:
1688 * -Denv.class.path=<envcp>
1689 * -Dapplication.home=<apphome>
1690 * -Djava.class.path=<appcp>
1691 * <envcp> is the user's setting of CLASSPATH -- for instance the user
1692 * tells javac where to find binary classes through this environment
1693 * variable. Notice that users will be able to compile against our
1694 * tools classes (sun.tools.javac.Main) only if they explicitly add
1695 * tools.jar to CLASSPATH.
1696 * <apphome> is the directory where the application is installed.
1697 * <appcp> is the classpath to where our apps' classfiles are.
1698 */
1699 static jboolean
1700 AddApplicationOptions(int cpathc, const char **cpathv)
1701 {
1702 char *envcp, *appcp, *apphome;
1703 char home[MAXPATHLEN]; /* application home */
1704 char separator[] = { PATH_SEPARATOR, '\0' };
1705 int size, i;
1706
1707 {
1708 const char *s = getenv("CLASSPATH");
1709 if (s) {
1710 s = (char *) JLI_WildcardExpandClasspath(s);
1711 /* 40 for -Denv.class.path= */
1712 if (JLI_StrLen(s) + 40 > JLI_StrLen(s)) { // Safeguard from overflow
1713 envcp = (char *)JLI_MemAlloc(JLI_StrLen(s) + 40);
1714 sprintf(envcp, "-Denv.class.path=%s", s);
1715 AddOption(envcp, NULL);
1716 }
1717 }
1718 }
1719
1720 if (!GetApplicationHome(home, sizeof(home))) {
1721 JLI_ReportErrorMessage(CFG_ERROR5);
1722 return JNI_FALSE;
1723 }
1724
1725 /* 40 for '-Dapplication.home=' */
1726 apphome = (char *)JLI_MemAlloc(JLI_StrLen(home) + 40);
1727 sprintf(apphome, "-Dapplication.home=%s", home);
1728 AddOption(apphome, NULL);
1729
1730 /* How big is the application's classpath? */
1731 if (cpathc > 0) {
1732 size = 40; /* 40: "-Djava.class.path=" */
1733 for (i = 0; i < cpathc; i++) {
1734 size += (int)JLI_StrLen(home) + (int)JLI_StrLen(cpathv[i]) + 1; /* 1: separator */
1735 }
1736 appcp = (char *)JLI_MemAlloc(size + 1);
1737 JLI_StrCpy(appcp, "-Djava.class.path=");
1738 for (i = 0; i < cpathc; i++) {
1739 JLI_StrCat(appcp, home); /* c:\program files\myapp */
1740 JLI_StrCat(appcp, cpathv[i]); /* \lib\myapp.jar */
1741 JLI_StrCat(appcp, separator); /* ; */
1742 }
1743 appcp[JLI_StrLen(appcp)-1] = '\0'; /* remove trailing path separator */
1744 AddOption(appcp, NULL);
1745 }
1746 return JNI_TRUE;
1747 }
1748
1749 /*
1750 * inject the -Dsun.java.command pseudo property into the args structure
1751 * this pseudo property is used in the HotSpot VM to expose the
1752 * Java class name and arguments to the main method to the VM. The
1753 * HotSpot VM uses this pseudo property to store the Java class name
1754 * (or jar file name) and the arguments to the class's main method
1755 * to the instrumentation memory region. The sun.java.command pseudo
1756 * property is not exported by HotSpot to the Java layer.
1757 */
1758 void
1759 SetJavaCommandLineProp(char *what, int argc, char **argv)
1760 {
1761
1762 int i = 0;
1763 size_t len = 0;
1764 char* javaCommand = NULL;
1765 char* dashDstr = "-Dsun.java.command=";
1766
1767 if (what == NULL) {
1768 /* unexpected, one of these should be set. just return without
1769 * setting the property
1770 */
1771 return;
1772 }
1773
1774 /* determine the amount of memory to allocate assuming
1775 * the individual components will be space separated
1776 */
1777 len = JLI_StrLen(what);
1778 for (i = 0; i < argc; i++) {
1779 len += JLI_StrLen(argv[i]) + 1;
1780 }
1781
1782 /* allocate the memory */
1783 javaCommand = (char*) JLI_MemAlloc(len + JLI_StrLen(dashDstr) + 1);
1784
1785 /* build the -D string */
1786 *javaCommand = '\0';
1787 JLI_StrCat(javaCommand, dashDstr);
1788 JLI_StrCat(javaCommand, what);
1789
1790 for (i = 0; i < argc; i++) {
1791 /* the components of the string are space separated. In
1792 * the case of embedded white space, the relationship of
1793 * the white space separated components to their true
1794 * positional arguments will be ambiguous. This issue may
1795 * be addressed in a future release.
1796 */
1797 JLI_StrCat(javaCommand, " ");
1798 JLI_StrCat(javaCommand, argv[i]);
1799 }
1800
1801 AddOption(javaCommand, NULL);
1802 }
1803
1804 /*
1805 * JVM would like to know if it's created by a standard Sun launcher, or by
1806 * user native application, the following property indicates the former.
1807 */
1808 void
1809 SetJavaLauncherProp() {
1810 AddOption("-Dsun.java.launcher=SUN_STANDARD", NULL);
1811 }
1812
1813 /*
1814 * Prints the version information from the java.version and other properties.
1815 */
1816 static void
1817 PrintJavaVersion(JNIEnv *env, jboolean extraLF)
1818 {
1819 jclass ver;
1820 jmethodID print;
1821
1822 NULL_CHECK(ver = FindBootStrapClass(env, "java/lang/VersionProps"));
1823 NULL_CHECK(print = (*env)->GetStaticMethodID(env,
1824 ver,
1825 (extraLF == JNI_TRUE) ? "println" : "print",
1826 "(Z)V"
1827 )
1828 );
1829
1830 (*env)->CallStaticVoidMethod(env, ver, print, printTo);
1831 }
1832
1833 /*
1834 * Prints all the Java settings, see the java implementation for more details.
1835 */
1836 static void
1837 ShowSettings(JNIEnv *env, char *optString)
1838 {
1839 jmethodID showSettingsID;
1840 jstring joptString;
1841 jclass cls = GetLauncherHelperClass(env);
1842 NULL_CHECK(cls);
1843 NULL_CHECK(showSettingsID = (*env)->GetStaticMethodID(env, cls,
1844 "showSettings", "(ZLjava/lang/String;JJJ)V"));
1845 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1846 (*env)->CallStaticVoidMethod(env, cls, showSettingsID,
1847 USE_STDERR,
1848 joptString,
1849 (jlong)initialHeapSize,
1850 (jlong)maxHeapSize,
1851 (jlong)threadStackSize);
1852 }
1853
1854 /**
1855 * Show resolved modules
1856 */
1857 static void
1858 ShowResolvedModules(JNIEnv *env)
1859 {
1860 jmethodID showResolvedModulesID;
1861 jclass cls = GetLauncherHelperClass(env);
1862 NULL_CHECK(cls);
1863 NULL_CHECK(showResolvedModulesID = (*env)->GetStaticMethodID(env, cls,
1864 "showResolvedModules", "()V"));
1865 (*env)->CallStaticVoidMethod(env, cls, showResolvedModulesID);
1866 }
1867
1868 /**
1869 * List observable modules
1870 */
1871 static void
1872 ListModules(JNIEnv *env)
1873 {
1874 jmethodID listModulesID;
1875 jclass cls = GetLauncherHelperClass(env);
1876 NULL_CHECK(cls);
1877 NULL_CHECK(listModulesID = (*env)->GetStaticMethodID(env, cls,
1878 "listModules", "()V"));
1879 (*env)->CallStaticVoidMethod(env, cls, listModulesID);
1880 }
1881
1882 /**
1883 * Describe a module
1884 */
1885 static void
1886 DescribeModule(JNIEnv *env, char *optString)
1887 {
1888 jmethodID describeModuleID;
1889 jstring joptString = NULL;
1890 jclass cls = GetLauncherHelperClass(env);
1891 NULL_CHECK(cls);
1892 NULL_CHECK(describeModuleID = (*env)->GetStaticMethodID(env, cls,
1893 "describeModule", "(Ljava/lang/String;)V"));
1894 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1895 (*env)->CallStaticVoidMethod(env, cls, describeModuleID, joptString);
1896 }
1897
1898 /**
1899 * Validate modules
1900 */
1901 static jboolean
1902 ValidateModules(JNIEnv *env)
1903 {
1904 jmethodID validateModulesID;
1905 jclass cls = GetLauncherHelperClass(env);
1906 NULL_CHECK_RETURN_VALUE(cls, JNI_FALSE);
1907 validateModulesID = (*env)->GetStaticMethodID(env, cls, "validateModules", "()Z");
1908 NULL_CHECK_RETURN_VALUE(cls, JNI_FALSE);
1909 return (*env)->CallStaticBooleanMethod(env, cls, validateModulesID);
1910 }
1911
1912 /*
1913 * Prints default usage or the Xusage message, see sun.launcher.LauncherHelper.java
1914 */
1915 static void
1916 PrintUsage(JNIEnv* env, jboolean doXUsage)
1917 {
1918 jmethodID initHelp, vmSelect, vmSynonym, printHelp, printXUsageMessage;
1919 jstring jprogname, vm1, vm2;
1920 int i;
1921 jclass cls = GetLauncherHelperClass(env);
1922 NULL_CHECK(cls);
1923 if (doXUsage) {
1924 NULL_CHECK(printXUsageMessage = (*env)->GetStaticMethodID(env, cls,
1925 "printXUsageMessage", "(Z)V"));
1926 (*env)->CallStaticVoidMethod(env, cls, printXUsageMessage, printTo);
1927 } else {
1928 NULL_CHECK(initHelp = (*env)->GetStaticMethodID(env, cls,
1929 "initHelpMessage", "(Ljava/lang/String;)V"));
1930
1931 NULL_CHECK(vmSelect = (*env)->GetStaticMethodID(env, cls, "appendVmSelectMessage",
1932 "(Ljava/lang/String;Ljava/lang/String;)V"));
1933
1934 NULL_CHECK(vmSynonym = (*env)->GetStaticMethodID(env, cls,
1935 "appendVmSynonymMessage",
1936 "(Ljava/lang/String;Ljava/lang/String;)V"));
1937
1938 NULL_CHECK(printHelp = (*env)->GetStaticMethodID(env, cls,
1939 "printHelpMessage", "(Z)V"));
1940
1941 NULL_CHECK(jprogname = (*env)->NewStringUTF(env, _program_name));
1942
1943 /* Initialize the usage message with the usual preamble */
1944 (*env)->CallStaticVoidMethod(env, cls, initHelp, jprogname);
1945 CHECK_EXCEPTION_RETURN();
1946
1947
1948 /* Assemble the other variant part of the usage */
1949 for (i=1; i<knownVMsCount; i++) {
1950 if (knownVMs[i].flag == VM_KNOWN) {
1951 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
1952 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].name+1));
1953 (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2);
1954 CHECK_EXCEPTION_RETURN();
1955 }
1956 }
1957 for (i=1; i<knownVMsCount; i++) {
1958 if (knownVMs[i].flag == VM_ALIASED_TO) {
1959 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
1960 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].alias+1));
1961 (*env)->CallStaticVoidMethod(env, cls, vmSynonym, vm1, vm2);
1962 CHECK_EXCEPTION_RETURN();
1963 }
1964 }
1965
1966 /* Complete the usage message and print to stderr*/
1967 (*env)->CallStaticVoidMethod(env, cls, printHelp, printTo);
1968 }
1969 return;
1970 }
1971
1972 /*
1973 * Read the jvm.cfg file and fill the knownJVMs[] array.
1974 *
1975 * The functionality of the jvm.cfg file is subject to change without
1976 * notice and the mechanism will be removed in the future.
1977 *
1978 * The lexical structure of the jvm.cfg file is as follows:
1979 *
1980 * jvmcfg := { vmLine }
1981 * vmLine := knownLine
1982 * | aliasLine
1983 * | warnLine
1984 * | ignoreLine
1985 * | errorLine
1986 * | predicateLine
1987 * | commentLine
1988 * knownLine := flag "KNOWN" EOL
1989 * warnLine := flag "WARN" EOL
1990 * ignoreLine := flag "IGNORE" EOL
1991 * errorLine := flag "ERROR" EOL
1992 * aliasLine := flag "ALIASED_TO" flag EOL
1993 * predicateLine := flag "IF_SERVER_CLASS" flag EOL
1994 * commentLine := "#" text EOL
1995 * flag := "-" identifier
1996 *
1997 * The semantics are that when someone specifies a flag on the command line:
1998 * - if the flag appears on a knownLine, then the identifier is used as
1999 * the name of the directory holding the JVM library (the name of the JVM).
2000 * - if the flag appears as the first flag on an aliasLine, the identifier
2001 * of the second flag is used as the name of the JVM.
2002 * - if the flag appears on a warnLine, the identifier is used as the
2003 * name of the JVM, but a warning is generated.
2004 * - if the flag appears on an ignoreLine, the identifier is recognized as the
2005 * name of a JVM, but the identifier is ignored and the default vm used
2006 * - if the flag appears on an errorLine, an error is generated.
2007 * - if the flag appears as the first flag on a predicateLine, and
2008 * the machine on which you are running passes the predicate indicated,
2009 * then the identifier of the second flag is used as the name of the JVM,
2010 * otherwise the identifier of the first flag is used as the name of the JVM.
2011 * If no flag is given on the command line, the first vmLine of the jvm.cfg
2012 * file determines the name of the JVM.
2013 * PredicateLines are only interpreted on first vmLine of a jvm.cfg file,
2014 * since they only make sense if someone hasn't specified the name of the
2015 * JVM on the command line.
2016 *
2017 * The intent of the jvm.cfg file is to allow several JVM libraries to
2018 * be installed in different subdirectories of a single JRE installation,
2019 * for space-savings and convenience in testing.
2020 * The intent is explicitly not to provide a full aliasing or predicate
2021 * mechanism.
2022 */
2023 jint
2024 ReadKnownVMs(const char *jvmCfgName, jboolean speculative)
2025 {
2026 FILE *jvmCfg;
2027 char line[MAXPATHLEN+20];
2028 int cnt = 0;
2029 int lineno = 0;
2030 jlong start, end;
2031 int vmType;
2032 char *tmpPtr;
2033 char *altVMName = NULL;
2034 char *serverClassVMName = NULL;
2035 static char *whiteSpace = " \t";
2036 if (JLI_IsTraceLauncher()) {
2037 start = CounterGet();
2038 }
2039
2040 jvmCfg = fopen(jvmCfgName, "r");
2041 if (jvmCfg == NULL) {
2042 if (!speculative) {
2043 JLI_ReportErrorMessage(CFG_ERROR6, jvmCfgName);
2044 exit(1);
2045 } else {
2046 return -1;
2047 }
2048 }
2049 while (fgets(line, sizeof(line), jvmCfg) != NULL) {
2050 vmType = VM_UNKNOWN;
2051 lineno++;
2052 if (line[0] == '#')
2053 continue;
2054 if (line[0] != '-') {
2055 JLI_ReportErrorMessage(CFG_WARN2, lineno, jvmCfgName);
2056 }
2057 if (cnt >= knownVMsLimit) {
2058 GrowKnownVMs(cnt);
2059 }
2060 line[JLI_StrLen(line)-1] = '\0'; /* remove trailing newline */
2061 tmpPtr = line + JLI_StrCSpn(line, whiteSpace);
2062 if (*tmpPtr == 0) {
2063 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
2064 } else {
2065 /* Null-terminate this string for JLI_StringDup below */
2066 *tmpPtr++ = 0;
2067 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
2068 if (*tmpPtr == 0) {
2069 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
2070 } else {
2071 if (!JLI_StrCCmp(tmpPtr, "KNOWN")) {
2072 vmType = VM_KNOWN;
2073 } else if (!JLI_StrCCmp(tmpPtr, "ALIASED_TO")) {
2074 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2075 if (*tmpPtr != 0) {
2076 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
2077 }
2078 if (*tmpPtr == 0) {
2079 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
2080 } else {
2081 /* Null terminate altVMName */
2082 altVMName = tmpPtr;
2083 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2084 *tmpPtr = 0;
2085 vmType = VM_ALIASED_TO;
2086 }
2087 } else if (!JLI_StrCCmp(tmpPtr, "WARN")) {
2088 vmType = VM_WARN;
2089 } else if (!JLI_StrCCmp(tmpPtr, "IGNORE")) {
2090 vmType = VM_IGNORE;
2091 } else if (!JLI_StrCCmp(tmpPtr, "ERROR")) {
2092 vmType = VM_ERROR;
2093 } else if (!JLI_StrCCmp(tmpPtr, "IF_SERVER_CLASS")) {
2094 /* ignored */
2095 } else {
2096 JLI_ReportErrorMessage(CFG_WARN5, lineno, &jvmCfgName[0]);
2097 vmType = VM_KNOWN;
2098 }
2099 }
2100 }
2101
2102 JLI_TraceLauncher("jvm.cfg[%d] = ->%s<-\n", cnt, line);
2103 if (vmType != VM_UNKNOWN) {
2104 knownVMs[cnt].name = JLI_StringDup(line);
2105 knownVMs[cnt].flag = vmType;
2106 switch (vmType) {
2107 default:
2108 break;
2109 case VM_ALIASED_TO:
2110 knownVMs[cnt].alias = JLI_StringDup(altVMName);
2111 JLI_TraceLauncher(" name: %s vmType: %s alias: %s\n",
2112 knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias);
2113 break;
2114 }
2115 cnt++;
2116 }
2117 }
2118 fclose(jvmCfg);
2119 knownVMsCount = cnt;
2120
2121 if (JLI_IsTraceLauncher()) {
2122 end = CounterGet();
2123 printf("%ld micro seconds to parse jvm.cfg\n",
2124 (long)(jint)Counter2Micros(end-start));
2125 }
2126
2127 return cnt;
2128 }
2129
2130
2131 static void
2132 GrowKnownVMs(int minimum)
2133 {
2134 struct vmdesc* newKnownVMs;
2135 int newMax;
2136
2137 newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit));
2138 if (newMax <= minimum) {
2139 newMax = minimum;
2140 }
2141 newKnownVMs = (struct vmdesc*) JLI_MemAlloc(newMax * sizeof(struct vmdesc));
2142 if (knownVMs != NULL) {
2143 memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc));
2144 }
2145 JLI_MemFree(knownVMs);
2146 knownVMs = newKnownVMs;
2147 knownVMsLimit = newMax;
2148 }
2149
2150
2151 /* Returns index of VM or -1 if not found */
2152 static int
2153 KnownVMIndex(const char* name)
2154 {
2155 int i;
2156 if (JLI_StrCCmp(name, "-J") == 0) name += 2;
2157 for (i = 0; i < knownVMsCount; i++) {
2158 if (!JLI_StrCmp(name, knownVMs[i].name)) {
2159 return i;
2160 }
2161 }
2162 return -1;
2163 }
2164
2165 static void
2166 FreeKnownVMs()
2167 {
2168 int i;
2169 for (i = 0; i < knownVMsCount; i++) {
2170 JLI_MemFree(knownVMs[i].name);
2171 knownVMs[i].name = NULL;
2172 }
2173 JLI_MemFree(knownVMs);
2174 }
2175
2176 /*
2177 * Displays the splash screen according to the jar file name
2178 * and image file names stored in environment variables
2179 */
2180 void
2181 ShowSplashScreen()
2182 {
2183 const char *jar_name = getenv(SPLASH_JAR_ENV_ENTRY);
2184 const char *file_name = getenv(SPLASH_FILE_ENV_ENTRY);
2185 int data_size;
2186 void *image_data = NULL;
2187 float scale_factor = 1;
2188 char *scaled_splash_name = NULL;
2189 jboolean isImageScaled = JNI_FALSE;
2190 size_t maxScaledImgNameLength = 0;
2191 if (file_name == NULL){
2192 return;
2193 }
2194 maxScaledImgNameLength = DoSplashGetScaledImgNameMaxPstfixLen(file_name);
2195
2196 scaled_splash_name = JLI_MemAlloc(
2197 maxScaledImgNameLength * sizeof(char));
2198 isImageScaled = DoSplashGetScaledImageName(jar_name, file_name,
2199 &scale_factor,
2200 scaled_splash_name, maxScaledImgNameLength);
2201 if (jar_name) {
2202
2203 if (isImageScaled) {
2204 image_data = JLI_JarUnpackFile(
2205 jar_name, scaled_splash_name, &data_size);
2206 }
2207
2208 if (!image_data) {
2209 scale_factor = 1;
2210 image_data = JLI_JarUnpackFile(
2211 jar_name, file_name, &data_size);
2212 }
2213 if (image_data) {
2214 DoSplashInit();
2215 DoSplashSetScaleFactor(scale_factor);
2216 DoSplashLoadMemory(image_data, data_size);
2217 JLI_MemFree(image_data);
2218 }
2219 } else {
2220 DoSplashInit();
2221 if (isImageScaled) {
2222 DoSplashSetScaleFactor(scale_factor);
2223 DoSplashLoadFile(scaled_splash_name);
2224 } else {
2225 DoSplashLoadFile(file_name);
2226 }
2227 }
2228 JLI_MemFree(scaled_splash_name);
2229
2230 DoSplashSetFileJarName(file_name, jar_name);
2231
2232 /*
2233 * Done with all command line processing and potential re-execs so
2234 * clean up the environment.
2235 */
2236 (void)UnsetEnv(ENV_ENTRY);
2237 (void)UnsetEnv(SPLASH_FILE_ENV_ENTRY);
2238 (void)UnsetEnv(SPLASH_JAR_ENV_ENTRY);
2239
2240 JLI_MemFree(splash_jar_entry);
2241 JLI_MemFree(splash_file_entry);
2242
2243 }
2244
2245 const char*
2246 GetFullVersion()
2247 {
2248 return _fVersion;
2249 }
2250
2251 const char*
2252 GetProgramName()
2253 {
2254 return _program_name;
2255 }
2256
2257 const char*
2258 GetLauncherName()
2259 {
2260 return _launcher_name;
2261 }
2262
2263 jboolean
2264 IsJavaArgs()
2265 {
2266 return _is_java_args;
2267 }
2268
2269 static jboolean
2270 IsWildCardEnabled()
2271 {
2272 return _wc_enabled;
2273 }
2274
2275 int
2276 ContinueInNewThread(InvocationFunctions* ifn, jlong threadStackSize,
2277 int argc, char **argv,
2278 int mode, char *what, int ret)
2279 {
2280
2281 /*
2282 * If user doesn't specify stack size, check if VM has a preference.
2283 * Note that HotSpot no longer supports JNI_VERSION_1_1 but it will
2284 * return its default stack size through the init args structure.
2285 */
2286 if (threadStackSize == 0) {
2287 struct JDK1_1InitArgs args1_1;
2288 memset((void*)&args1_1, 0, sizeof(args1_1));
2289 args1_1.version = JNI_VERSION_1_1;
2290 ifn->GetDefaultJavaVMInitArgs(&args1_1); /* ignore return value */
2291 if (args1_1.javaStackSize > 0) {
2292 threadStackSize = args1_1.javaStackSize;
2293 }
2294 }
2295
2296 { /* Create a new thread to create JVM and invoke main method */
2297 JavaMainArgs args;
2298 int rslt;
2299
2300 args.argc = argc;
2301 args.argv = argv;
2302 args.mode = mode;
2303 args.what = what;
2304 args.ifn = *ifn;
2305
2306 rslt = ContinueInNewThread0(JavaMain, threadStackSize, (void*)&args);
2307 /* If the caller has deemed there is an error we
2308 * simply return that, otherwise we return the value of
2309 * the callee
2310 */
2311 return (ret != 0) ? ret : rslt;
2312 }
2313 }
2314
2315 static void
2316 DumpState()
2317 {
2318 if (!JLI_IsTraceLauncher()) return ;
2319 printf("Launcher state:\n");
2320 printf("\tFirst application arg index: %d\n", JLI_GetAppArgIndex());
2321 printf("\tdebug:%s\n", (JLI_IsTraceLauncher() == JNI_TRUE) ? "on" : "off");
2322 printf("\tjavargs:%s\n", (_is_java_args == JNI_TRUE) ? "on" : "off");
2323 printf("\tprogram name:%s\n", GetProgramName());
2324 printf("\tlauncher name:%s\n", GetLauncherName());
2325 printf("\tjavaw:%s\n", (IsJavaw() == JNI_TRUE) ? "on" : "off");
2326 printf("\tfullversion:%s\n", GetFullVersion());
2327 }
2328
2329 /*
2330 * A utility procedure to always print to stderr
2331 */
2332 void
2333 JLI_ReportMessage(const char* fmt, ...)
2334 {
2335 va_list vl;
2336 va_start(vl, fmt);
2337 vfprintf(stderr, fmt, vl);
2338 fprintf(stderr, "\n");
2339 va_end(vl);
2340 }
2341
2342 /*
2343 * A utility procedure to always print to stdout
2344 */
2345 void
2346 JLI_ShowMessage(const char* fmt, ...)
2347 {
2348 va_list vl;
2349 va_start(vl, fmt);
2350 vfprintf(stdout, fmt, vl);
2351 fprintf(stdout, "\n");
2352 va_end(vl);
2353 }