1 /*
2 * Copyright (c) 1995, 2016, 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 char *listModules = NULL;
75
76 static const char *_program_name;
77 static const char *_launcher_name;
78 static jboolean _is_java_args = JNI_FALSE;
79 static jboolean _have_classpath = JNI_FALSE;
80 static const char *_fVersion;
81 static jboolean _wc_enabled = JNI_FALSE;
82
83 /*
84 * Entries for splash screen environment variables.
85 * putenv is performed in SelectVersion. We need
86 * them in memory until UnsetEnv, so they are made static
87 * global instead of auto local.
88 */
89 static char* splash_file_entry = NULL;
90 static char* splash_jar_entry = NULL;
91
92 /*
93 * List of VM options to be specified when the VM is created.
94 */
95 static JavaVMOption *options;
96 static int numOptions, maxOptions;
97
98 /*
99 * Prototypes for functions internal to launcher.
100 */
101 static void SetClassPath(const char *s);
102 static void SetMainModule(const char *s);
103 static void SelectVersion(int argc, char **argv, char **main_class);
104 static void SetJvmEnvironment(int argc, char **argv);
105 static jboolean ParseArguments(int *pargc, char ***pargv,
106 int *pmode, char **pwhat,
107 int *pret, const char *jrepath);
108 static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv,
109 InvocationFunctions *ifn);
110 static jstring NewPlatformString(JNIEnv *env, char *s);
111 static jclass LoadMainClass(JNIEnv *env, int mode, char *name);
112 static jclass GetApplicationClass(JNIEnv *env);
113
114 static void TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv);
115 static jboolean AddApplicationOptions(int cpathc, const char **cpathv);
116 static void SetApplicationClassPath(const char**);
117
118 static void PrintJavaVersion(JNIEnv *env, jboolean extraLF);
119 static void PrintUsage(JNIEnv* env, jboolean doXUsage);
120 static void ShowSettings(JNIEnv* env, char *optString);
121 static void ListModules(JNIEnv* env, char *optString);
122
123 static void SetPaths(int argc, char **argv);
124
125 static void DumpState();
126 static jboolean RemovableOption(char *option);
127
128 enum OptionKind {
129 LAUNCHER_OPTION = 0,
130 LAUNCHER_OPTION_WITH_ARGUMENT,
131 LAUNCHER_MAIN_OPTION,
132 VM_LONG_OPTION,
133 VM_LONG_OPTION_WITH_ARGUMENT,
134 VM_OPTION
135 };
136
137 static int GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue);
138 static jboolean IsOptionWithArgument(int argc, char **argv);
139
140 /* Maximum supported entries from jvm.cfg. */
141 #define INIT_MAX_KNOWN_VMS 10
142
143 /* Values for vmdesc.flag */
144 enum vmdesc_flag {
145 VM_UNKNOWN = -1,
146 VM_KNOWN,
147 VM_ALIASED_TO,
148 VM_WARN,
149 VM_ERROR,
150 VM_IF_SERVER_CLASS,
151 VM_IGNORE
152 };
153
154 struct vmdesc {
155 char *name;
156 int flag;
157 char *alias;
158 char *server_class;
159 };
160 static struct vmdesc *knownVMs = NULL;
161 static int knownVMsCount = 0;
162 static int knownVMsLimit = 0;
163
164 static void GrowKnownVMs(int minimum);
165 static int KnownVMIndex(const char* name);
166 static void FreeKnownVMs();
167 static jboolean IsWildCardEnabled();
168
169 /*
170 * This reports error. VM will not be created and no usage is printed.
171 */
172 #define REPORT_ERROR(AC_ok, AC_failure_message, AC_questionable_arg) \
173 do { \
174 if (!AC_ok) { \
175 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \
176 printUsage = JNI_FALSE; \
177 *pret = 1; \
178 return JNI_FALSE; \
179 } \
180 } while (JNI_FALSE)
181
182 #define ARG_CHECK(AC_arg_count, AC_failure_message, AC_questionable_arg) \
183 do { \
184 if (AC_arg_count < 1) { \
185 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \
186 printUsage = JNI_TRUE; \
187 *pret = 1; \
188 return JNI_TRUE; \
189 } \
190 } while (JNI_FALSE)
191
192 /*
193 * Running Java code in primordial thread caused many problems. We will
194 * create a new thread to invoke JVM. See 6316197 for more information.
195 */
196 static jlong threadStackSize = 0; /* stack size of the new thread */
197 static jlong maxHeapSize = 0; /* max heap size */
198 static jlong initialHeapSize = 0; /* inital heap size */
199
200 /*
201 * A minimum -Xss stack size suitable for all platforms.
202 */
203 #ifndef STACK_SIZE_MINIMUM
204 #define STACK_SIZE_MINIMUM (32 * KB)
205 #endif
206
207 /*
208 * Entry point.
209 */
210 int
211 JLI_Launch(int argc, char ** argv, /* main argc, argc */
212 int jargc, const char** jargv, /* java args */
213 int appclassc, const char** appclassv, /* app classpath */
214 const char* fullversion, /* full version defined */
215 const char* dotversion, /* UNUSED dot version defined */
216 const char* pname, /* program name */
217 const char* lname, /* launcher name */
218 jboolean javaargs, /* JAVA_ARGS */
219 jboolean cpwildcard, /* classpath wildcard*/
220 jboolean javaw, /* windows-only javaw */
221 jint ergo /* unused */
222 )
223 {
224 int mode = LM_UNKNOWN;
225 char *what = NULL;
226 char *main_class = NULL;
227 int ret;
228 InvocationFunctions ifn;
229 jlong start, end;
230 char jvmpath[MAXPATHLEN];
231 char jrepath[MAXPATHLEN];
232 char jvmcfg[MAXPATHLEN];
233
234 _fVersion = fullversion;
235 _launcher_name = lname;
236 _program_name = pname;
237 _is_java_args = javaargs;
238 _wc_enabled = cpwildcard;
239
240 InitLauncher(javaw);
241 DumpState();
242 if (JLI_IsTraceLauncher()) {
243 int i;
244 printf("Command line args:\n");
245 for (i = 0; i < argc ; i++) {
246 printf("argv[%d] = %s\n", i, argv[i]);
247 }
248 AddOption("-Dsun.java.launcher.diag=true", NULL);
249 }
250
251 /*
252 * SelectVersion() has several responsibilities:
253 *
254 * 1) Disallow specification of another JRE. With 1.9, another
255 * version of the JRE cannot be invoked.
256 * 2) Allow for a JRE version to invoke JDK 1.9 or later. Since
257 * all mJRE directives have been stripped from the request but
258 * the pre 1.9 JRE [ 1.6 thru 1.8 ], it is as if 1.9+ has been
259 * invoked from the command line.
260 */
261 SelectVersion(argc, argv, &main_class);
262
263 CreateExecutionEnvironment(&argc, &argv,
264 jrepath, sizeof(jrepath),
265 jvmpath, sizeof(jvmpath),
266 jvmcfg, sizeof(jvmcfg));
267
268 if (!IsJavaArgs()) {
269 SetJvmEnvironment(argc,argv);
270 }
271
272 ifn.CreateJavaVM = 0;
273 ifn.GetDefaultJavaVMInitArgs = 0;
274
275 if (JLI_IsTraceLauncher()) {
276 start = CounterGet();
277 }
278
279 if (!LoadJavaVM(jvmpath, &ifn)) {
280 return(6);
281 }
282
283 if (JLI_IsTraceLauncher()) {
284 end = CounterGet();
285 }
286
287 JLI_TraceLauncher("%ld micro seconds to LoadJavaVM\n",
288 (long)(jint)Counter2Micros(end-start));
289
290 ++argv;
291 --argc;
292
293 if (IsJavaArgs()) {
294 /* Preprocess wrapper arguments */
295 TranslateApplicationArgs(jargc, jargv, &argc, &argv);
296 if (!AddApplicationOptions(appclassc, appclassv)) {
297 return(1);
298 }
299 } else {
300 /* Set default CLASSPATH */
301 char* cpath = getenv("CLASSPATH");
302 if (cpath != NULL) {
303 SetClassPath(cpath);
304 }
305 }
306
307 /* Parse command line options; if the return value of
308 * ParseArguments is false, the program should exit.
309 */
310 if (!ParseArguments(&argc, &argv, &mode, &what, &ret, jrepath))
311 {
312 return(ret);
313 }
314
315 /* Override class path if -jar flag was specified */
316 if (mode == LM_JAR) {
317 SetClassPath(what); /* Override class path */
318 }
319
320 /* set the -Dsun.java.command pseudo property */
321 SetJavaCommandLineProp(what, argc, argv);
322
323 /* Set the -Dsun.java.launcher pseudo property */
324 SetJavaLauncherProp();
325
326 /* set the -Dsun.java.launcher.* platform properties */
327 SetJavaLauncherPlatformProps();
328
329 return JVMInit(&ifn, threadStackSize, argc, argv, mode, what, ret);
330 }
331 /*
332 * Always detach the main thread so that it appears to have ended when
333 * the application's main method exits. This will invoke the
334 * uncaught exception handler machinery if main threw an
335 * exception. An uncaught exception handler cannot change the
336 * launcher's return code except by calling System.exit.
337 *
338 * Wait for all non-daemon threads to end, then destroy the VM.
339 * This will actually create a trivial new Java waiter thread
340 * named "DestroyJavaVM", but this will be seen as a different
341 * thread from the one that executed main, even though they are
342 * the same C thread. This allows mainThread.join() and
343 * mainThread.isAlive() to work as expected.
344 */
345 #define LEAVE() \
346 do { \
347 if ((*vm)->DetachCurrentThread(vm) != JNI_OK) { \
348 JLI_ReportErrorMessage(JVM_ERROR2); \
349 ret = 1; \
350 } \
351 if (JNI_TRUE) { \
352 (*vm)->DestroyJavaVM(vm); \
353 return ret; \
354 } \
355 } while (JNI_FALSE)
356
357 #define CHECK_EXCEPTION_NULL_LEAVE(CENL_exception) \
358 do { \
359 if ((*env)->ExceptionOccurred(env)) { \
360 JLI_ReportExceptionDescription(env); \
361 LEAVE(); \
362 } \
363 if ((CENL_exception) == NULL) { \
364 JLI_ReportErrorMessage(JNI_ERROR); \
365 LEAVE(); \
366 } \
367 } while (JNI_FALSE)
368
369 #define CHECK_EXCEPTION_LEAVE(CEL_return_value) \
370 do { \
371 if ((*env)->ExceptionOccurred(env)) { \
372 JLI_ReportExceptionDescription(env); \
373 ret = (CEL_return_value); \
374 LEAVE(); \
375 } \
376 } while (JNI_FALSE)
377
378
379 int JNICALL
380 JavaMain(void * _args)
381 {
382 JavaMainArgs *args = (JavaMainArgs *)_args;
383 int argc = args->argc;
384 char **argv = args->argv;
385 int mode = args->mode;
386 char *what = args->what;
387 InvocationFunctions ifn = args->ifn;
388
389 JavaVM *vm = 0;
390 JNIEnv *env = 0;
391 jclass mainClass = NULL;
392 jclass appClass = NULL; // actual application class being launched
393 jmethodID mainID;
394 jobjectArray mainArgs;
395 int ret = 0;
396 jlong start, end;
397
398 RegisterThread();
399
400 /* Initialize the virtual machine */
401 start = CounterGet();
402 if (!InitializeJVM(&vm, &env, &ifn)) {
403 JLI_ReportErrorMessage(JVM_ERROR1);
404 exit(1);
405 }
406
407 if (showSettings != NULL) {
408 ShowSettings(env, showSettings);
409 CHECK_EXCEPTION_LEAVE(1);
410 }
411
412 if (listModules != NULL) {
413 ListModules(env, listModules);
414 CHECK_EXCEPTION_LEAVE(1);
415 LEAVE();
416 }
417
418 if (printVersion || showVersion) {
419 PrintJavaVersion(env, showVersion);
420 CHECK_EXCEPTION_LEAVE(0);
421 if (printVersion) {
422 LEAVE();
423 }
424 }
425
426 /* If the user specified neither a class name nor a JAR file */
427 if (printXUsage || printUsage || what == 0 || mode == LM_UNKNOWN) {
428 PrintUsage(env, printXUsage);
429 CHECK_EXCEPTION_LEAVE(1);
430 LEAVE();
431 }
432
433 FreeKnownVMs(); /* after last possible PrintUsage */
434
435 if (JLI_IsTraceLauncher()) {
436 end = CounterGet();
437 JLI_TraceLauncher("%ld micro seconds to InitializeJVM\n",
438 (long)(jint)Counter2Micros(end-start));
439 }
440
441 /* At this stage, argc/argv have the application's arguments */
442 if (JLI_IsTraceLauncher()){
443 int i;
444 printf("%s is '%s'\n", launchModeNames[mode], what);
445 printf("App's argc is %d\n", argc);
446 for (i=0; i < argc; i++) {
447 printf(" argv[%2d] = '%s'\n", i, argv[i]);
448 }
449 }
450
451 ret = 1;
452
453 /*
454 * Get the application's main class. It also checks if the main
455 * method exists.
456 *
457 * See bugid 5030265. The Main-Class name has already been parsed
458 * from the manifest, but not parsed properly for UTF-8 support.
459 * Hence the code here ignores the value previously extracted and
460 * uses the pre-existing code to reextract the value. This is
461 * possibly an end of release cycle expedient. However, it has
462 * also been discovered that passing some character sets through
463 * the environment has "strange" behavior on some variants of
464 * Windows. Hence, maybe the manifest parsing code local to the
465 * launcher should never be enhanced.
466 *
467 * Hence, future work should either:
468 * 1) Correct the local parsing code and verify that the
469 * Main-Class attribute gets properly passed through
470 * all environments,
471 * 2) Remove the vestages of maintaining main_class through
472 * the environment (and remove these comments).
473 *
474 * This method also correctly handles launching existing JavaFX
475 * applications that may or may not have a Main-Class manifest entry.
476 */
477 mainClass = LoadMainClass(env, mode, what);
478 CHECK_EXCEPTION_NULL_LEAVE(mainClass);
479 /*
480 * In some cases when launching an application that needs a helper, e.g., a
481 * JavaFX application with no main method, the mainClass will not be the
482 * applications own main class but rather a helper class. To keep things
483 * consistent in the UI we need to track and report the application main class.
484 */
485 appClass = GetApplicationClass(env);
486 NULL_CHECK_RETURN_VALUE(appClass, -1);
487
488 /* Build platform specific argument array */
489 mainArgs = CreateApplicationArgs(env, argv, argc);
490 CHECK_EXCEPTION_NULL_LEAVE(mainArgs);
491
492 if (dryRun) {
493 ret = 0;
494 LEAVE();
495 }
496
497 /*
498 * PostJVMInit uses the class name as the application name for GUI purposes,
499 * for example, on OSX this sets the application name in the menu bar for
500 * both SWT and JavaFX. So we'll pass the actual application class here
501 * instead of mainClass as that may be a launcher or helper class instead
502 * of the application class.
503 */
504 PostJVMInit(env, appClass, vm);
505 CHECK_EXCEPTION_LEAVE(1);
506
507 /*
508 * The LoadMainClass not only loads the main class, it will also ensure
509 * that the main method's signature is correct, therefore further checking
510 * is not required. The main method is invoked here so that extraneous java
511 * stacks are not in the application stack trace.
512 */
513 mainID = (*env)->GetStaticMethodID(env, mainClass, "main",
514 "([Ljava/lang/String;)V");
515 CHECK_EXCEPTION_NULL_LEAVE(mainID);
516
517 /* Invoke main method. */
518 (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs);
519
520 /*
521 * The launcher's exit code (in the absence of calls to
522 * System.exit) will be non-zero if main threw an exception.
523 */
524 ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1;
525
526 LEAVE();
527 }
528
529 /*
530 * Test if the given name is one of the class path options.
531 */
532 static jboolean
533 IsClassPathOption(const char* name) {
534 return JLI_StrCmp(name, "-classpath") == 0 ||
535 JLI_StrCmp(name, "-cp") == 0 ||
536 JLI_StrCmp(name, "--class-path") == 0;
537 }
538
539 /*
540 * Test if the given name is a launcher option taking the main entry point.
541 */
542 static jboolean
543 IsLauncherMainOption(const char* name) {
544 return JLI_StrCmp(name, "--module") == 0 ||
545 JLI_StrCmp(name, "-m") == 0;
546 }
547
548 /*
549 * Test if the given name is a white-space launcher option.
550 */
551 static jboolean
552 IsLauncherOption(const char* name) {
553 return IsClassPathOption(name) ||
554 IsLauncherMainOption(name) ||
555 JLI_StrCmp(name, "--list-modules") == 0;
556 }
557
558 /*
559 * Test if the given name is a module-system white-space option that
560 * will be passed to the VM with its corresponding long-form option
561 * name and "=" delimiter.
562 */
563 static jboolean
564 IsModuleOption(const char* name) {
565 return JLI_StrCmp(name, "--module-path") == 0 ||
566 JLI_StrCmp(name, "-p") == 0 ||
567 JLI_StrCmp(name, "--upgrade-module-path") == 0 ||
568 JLI_StrCmp(name, "--add-modules") == 0 ||
569 JLI_StrCmp(name, "--limit-modules") == 0 ||
570 JLI_StrCmp(name, "--add-exports") == 0 ||
571 JLI_StrCmp(name, "--add-opens") == 0 ||
572 JLI_StrCmp(name, "--add-reads") == 0 ||
573 JLI_StrCmp(name, "--patch-module") == 0;
574 }
575
576 static jboolean
577 IsLongFormModuleOption(const char* name) {
578 return JLI_StrCCmp(name, "--module-path=") == 0 ||
579 JLI_StrCCmp(name, "--upgrade-module-path=") == 0 ||
580 JLI_StrCCmp(name, "--add-modules=") == 0 ||
581 JLI_StrCCmp(name, "--limit-modules=") == 0 ||
582 JLI_StrCCmp(name, "--add-exports=") == 0 ||
583 JLI_StrCCmp(name, "--add-reads=") == 0 ||
584 JLI_StrCCmp(name, "--patch-module=") == 0;
585 }
586
587 /*
588 * Test if the given name has a white space option.
589 */
590 jboolean
591 IsWhiteSpaceOption(const char* name) {
592 return IsModuleOption(name) ||
593 IsLauncherOption(name);
594 }
595
596 /*
597 * Checks the command line options to find which JVM type was
598 * specified. If no command line option was given for the JVM type,
599 * the default type is used. The environment variable
600 * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also
601 * checked as ways of specifying which JVM type to invoke.
602 */
603 char *
604 CheckJvmType(int *pargc, char ***argv, jboolean speculative) {
605 int i, argi;
606 int argc;
607 char **newArgv;
608 int newArgvIdx = 0;
609 int isVMType;
610 int jvmidx = -1;
611 char *jvmtype = getenv("JDK_ALTERNATE_VM");
612
613 argc = *pargc;
614
615 /* To make things simpler we always copy the argv array */
616 newArgv = JLI_MemAlloc((argc + 1) * sizeof(char *));
617
618 /* The program name is always present */
619 newArgv[newArgvIdx++] = (*argv)[0];
620
621 for (argi = 1; argi < argc; argi++) {
622 char *arg = (*argv)[argi];
623 isVMType = 0;
624
625 if (IsJavaArgs()) {
626 if (arg[0] != '-') {
627 newArgv[newArgvIdx++] = arg;
628 continue;
629 }
630 } else {
631 if (IsWhiteSpaceOption(arg)) {
632 newArgv[newArgvIdx++] = arg;
633 argi++;
634 if (argi < argc) {
635 newArgv[newArgvIdx++] = (*argv)[argi];
636 }
637 continue;
638 }
639 if (arg[0] != '-') break;
640 }
641
642 /* Did the user pass an explicit VM type? */
643 i = KnownVMIndex(arg);
644 if (i >= 0) {
645 jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */
646 isVMType = 1;
647 *pargc = *pargc - 1;
648 }
649
650 /* Did the user specify an "alternate" VM? */
651 else if (JLI_StrCCmp(arg, "-XXaltjvm=") == 0 || JLI_StrCCmp(arg, "-J-XXaltjvm=") == 0) {
652 isVMType = 1;
653 jvmtype = arg+((arg[1]=='X')? 10 : 12);
654 jvmidx = -1;
655 }
656
657 if (!isVMType) {
658 newArgv[newArgvIdx++] = arg;
659 }
660 }
661
662 /*
663 * Finish copying the arguments if we aborted the above loop.
664 * NOTE that if we aborted via "break" then we did NOT copy the
665 * last argument above, and in addition argi will be less than
666 * argc.
667 */
668 while (argi < argc) {
669 newArgv[newArgvIdx++] = (*argv)[argi];
670 argi++;
671 }
672
673 /* argv is null-terminated */
674 newArgv[newArgvIdx] = 0;
675
676 /* Copy back argv */
677 *argv = newArgv;
678 *pargc = newArgvIdx;
679
680 /* use the default VM type if not specified (no alias processing) */
681 if (jvmtype == NULL) {
682 char* result = knownVMs[0].name+1;
683 JLI_TraceLauncher("Default VM: %s\n", result);
684 return result;
685 }
686
687 /* if using an alternate VM, no alias processing */
688 if (jvmidx < 0)
689 return jvmtype;
690
691 /* Resolve aliases first */
692 {
693 int loopCount = 0;
694 while (knownVMs[jvmidx].flag == VM_ALIASED_TO) {
695 int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias);
696
697 if (loopCount > knownVMsCount) {
698 if (!speculative) {
699 JLI_ReportErrorMessage(CFG_ERROR1);
700 exit(1);
701 } else {
702 return "ERROR";
703 /* break; */
704 }
705 }
706
707 if (nextIdx < 0) {
708 if (!speculative) {
709 JLI_ReportErrorMessage(CFG_ERROR2, knownVMs[jvmidx].alias);
710 exit(1);
711 } else {
712 return "ERROR";
713 }
714 }
715 jvmidx = nextIdx;
716 jvmtype = knownVMs[jvmidx].name+1;
717 loopCount++;
718 }
719 }
720
721 switch (knownVMs[jvmidx].flag) {
722 case VM_WARN:
723 if (!speculative) {
724 JLI_ReportErrorMessage(CFG_WARN1, jvmtype, knownVMs[0].name + 1);
725 }
726 /* fall through */
727 case VM_IGNORE:
728 jvmtype = knownVMs[jvmidx=0].name + 1;
729 /* fall through */
730 case VM_KNOWN:
731 break;
732 case VM_ERROR:
733 if (!speculative) {
734 JLI_ReportErrorMessage(CFG_ERROR3, jvmtype);
735 exit(1);
736 } else {
737 return "ERROR";
738 }
739 }
740
741 return jvmtype;
742 }
743
744 /*
745 * static void SetJvmEnvironment(int argc, char **argv);
746 * Is called just before the JVM is loaded. We can set env variables
747 * that are consumed by the JVM. This function is non-destructive,
748 * leaving the arg list intact. The first use is for the JVM flag
749 * -XX:NativeMemoryTracking=value.
750 */
751 static void
752 SetJvmEnvironment(int argc, char **argv) {
753
754 static const char* NMT_Env_Name = "NMT_LEVEL_";
755 int i;
756 for (i = 0; i < argc; i++) {
757 char *arg = argv[i];
758 /*
759 * Since this must be a VM flag we stop processing once we see
760 * an argument the launcher would not have processed beyond (such
761 * as -version or -h), or an argument that indicates the following
762 * arguments are for the application (i.e. the main class name, or
763 * the -jar argument).
764 */
765 if (i > 0) {
766 char *prev = argv[i - 1];
767 // skip non-dash arg preceded by class path specifiers
768 if (*arg != '-' && IsWhiteSpaceOption(prev)) {
769 continue;
770 }
771
772 if (*arg != '-'
773 || JLI_StrCmp(arg, "-version") == 0
774 || JLI_StrCmp(arg, "--version") == 0
775 || JLI_StrCmp(arg, "-fullversion") == 0
776 || JLI_StrCmp(arg, "--full-version") == 0
777 || JLI_StrCmp(arg, "-help") == 0
778 || JLI_StrCmp(arg, "--help") == 0
779 || JLI_StrCmp(arg, "-?") == 0
780 || JLI_StrCmp(arg, "-jar") == 0
781 || JLI_StrCmp(arg, "-X") == 0
782 || JLI_StrCmp(arg, "--help-extra") == 0) {
783 return;
784 }
785 }
786 /*
787 * The following case checks for "-XX:NativeMemoryTracking=value".
788 * If value is non null, an environmental variable set to this value
789 * will be created to be used by the JVM.
790 * The argument is passed to the JVM, which will check validity.
791 * The JVM is responsible for removing the env variable.
792 */
793 if (JLI_StrCCmp(arg, "-XX:NativeMemoryTracking=") == 0) {
794 int retval;
795 // get what follows this parameter, include "="
796 size_t pnlen = JLI_StrLen("-XX:NativeMemoryTracking=");
797 if (JLI_StrLen(arg) > pnlen) {
798 char* value = arg + pnlen;
799 size_t pbuflen = pnlen + JLI_StrLen(value) + 10; // 10 max pid digits
800
801 /*
802 * ensures that malloc successful
803 * DONT JLI_MemFree() pbuf. JLI_PutEnv() uses system call
804 * that could store the address.
805 */
806 char * pbuf = (char*)JLI_MemAlloc(pbuflen);
807
808 JLI_Snprintf(pbuf, pbuflen, "%s%d=%s", NMT_Env_Name, JLI_GetPid(), value);
809 retval = JLI_PutEnv(pbuf);
810 if (JLI_IsTraceLauncher()) {
811 char* envName;
812 char* envBuf;
813
814 // ensures that malloc successful
815 envName = (char*)JLI_MemAlloc(pbuflen);
816 JLI_Snprintf(envName, pbuflen, "%s%d", NMT_Env_Name, JLI_GetPid());
817
818 printf("TRACER_MARKER: NativeMemoryTracking: env var is %s\n",envName);
819 printf("TRACER_MARKER: NativeMemoryTracking: putenv arg %s\n",pbuf);
820 envBuf = getenv(envName);
821 printf("TRACER_MARKER: NativeMemoryTracking: got value %s\n",envBuf);
822 free(envName);
823 }
824
825 }
826
827 }
828
829 }
830 }
831
832 /* copied from HotSpot function "atomll()" */
833 static int
834 parse_size(const char *s, jlong *result) {
835 jlong n = 0;
836 int args_read = sscanf(s, JLONG_FORMAT_SPECIFIER, &n);
837 if (args_read != 1) {
838 return 0;
839 }
840 while (*s != '\0' && *s >= '0' && *s <= '9') {
841 s++;
842 }
843 // 4705540: illegal if more characters are found after the first non-digit
844 if (JLI_StrLen(s) > 1) {
845 return 0;
846 }
847 switch (*s) {
848 case 'T': case 't':
849 *result = n * GB * KB;
850 return 1;
851 case 'G': case 'g':
852 *result = n * GB;
853 return 1;
854 case 'M': case 'm':
855 *result = n * MB;
856 return 1;
857 case 'K': case 'k':
858 *result = n * KB;
859 return 1;
860 case '\0':
861 *result = n;
862 return 1;
863 default:
864 /* Create JVM with default stack and let VM handle malformed -Xss string*/
865 return 0;
866 }
867 }
868
869 /*
870 * Adds a new VM option with the given name and value.
871 */
872 void
873 AddOption(char *str, void *info)
874 {
875 /*
876 * Expand options array if needed to accommodate at least one more
877 * VM option.
878 */
879 if (numOptions >= maxOptions) {
880 if (options == 0) {
881 maxOptions = 4;
882 options = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
883 } else {
884 JavaVMOption *tmp;
885 maxOptions *= 2;
886 tmp = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
887 memcpy(tmp, options, numOptions * sizeof(JavaVMOption));
888 JLI_MemFree(options);
889 options = tmp;
890 }
891 }
892 options[numOptions].optionString = str;
893 options[numOptions++].extraInfo = info;
894
895 if (JLI_StrCCmp(str, "-Xss") == 0) {
896 jlong tmp;
897 if (parse_size(str + 4, &tmp)) {
898 threadStackSize = tmp;
899 /*
900 * Make sure the thread stack size is big enough that we won't get a stack
901 * overflow before the JVM startup code can check to make sure the stack
902 * is big enough.
903 */
904 if (threadStackSize < (jlong)STACK_SIZE_MINIMUM) {
905 threadStackSize = STACK_SIZE_MINIMUM;
906 }
907 }
908 }
909
910 if (JLI_StrCCmp(str, "-Xmx") == 0) {
911 jlong tmp;
912 if (parse_size(str + 4, &tmp)) {
913 maxHeapSize = tmp;
914 }
915 }
916
917 if (JLI_StrCCmp(str, "-Xms") == 0) {
918 jlong tmp;
919 if (parse_size(str + 4, &tmp)) {
920 initialHeapSize = tmp;
921 }
922 }
923 }
924
925 static void
926 SetClassPath(const char *s)
927 {
928 char *def;
929 const char *orig = s;
930 static const char format[] = "-Djava.class.path=%s";
931 /*
932 * usually we should not get a null pointer, but there are cases where
933 * we might just get one, in which case we simply ignore it, and let the
934 * caller deal with it
935 */
936 if (s == NULL)
937 return;
938 s = JLI_WildcardExpandClasspath(s);
939 if (sizeof(format) - 2 + JLI_StrLen(s) < JLI_StrLen(s))
940 // s is became corrupted after expanding wildcards
941 return;
942 def = JLI_MemAlloc(sizeof(format)
943 - 2 /* strlen("%s") */
944 + JLI_StrLen(s));
945 sprintf(def, format, s);
946 AddOption(def, NULL);
947 if (s != orig)
948 JLI_MemFree((char *) s);
949 _have_classpath = JNI_TRUE;
950 }
951
952 static void
953 AddLongFormOption(const char *option, const char *arg)
954 {
955 static const char format[] = "%s=%s";
956 char *def;
957 size_t def_len;
958
959 def_len = JLI_StrLen(option) + 1 + JLI_StrLen(arg) + 1;
960 def = JLI_MemAlloc(def_len);
961 JLI_Snprintf(def, def_len, format, option, arg);
962 AddOption(def, NULL);
963 }
964
965 static void
966 SetMainModule(const char *s)
967 {
968 static const char format[] = "-Djdk.module.main=%s";
969 char* slash = JLI_StrChr(s, '/');
970 size_t s_len, def_len;
971 char *def;
972
973 /* value may be <module> or <module>/<mainclass> */
974 if (slash == NULL) {
975 s_len = JLI_StrLen(s);
976 } else {
977 s_len = (size_t) (slash - s);
978 }
979 def_len = sizeof(format)
980 - 2 /* strlen("%s") */
981 + s_len;
982 def = JLI_MemAlloc(def_len);
983 JLI_Snprintf(def, def_len, format, s);
984 AddOption(def, NULL);
985 }
986
987 /*
988 * The SelectVersion() routine ensures that an appropriate version of
989 * the JRE is running. The specification for the appropriate version
990 * is obtained from either the manifest of a jar file (preferred) or
991 * from command line options.
992 * The routine also parses splash screen command line options and
993 * passes on their values in private environment variables.
994 */
995 static void
996 SelectVersion(int argc, char **argv, char **main_class)
997 {
998 char *arg;
999 char *operand;
1000 char *version = NULL;
1001 char *jre = NULL;
1002 int jarflag = 0;
1003 int headlessflag = 0;
1004 int restrict_search = -1; /* -1 implies not known */
1005 manifest_info info;
1006 char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "=";
1007 char *splash_file_name = NULL;
1008 char *splash_jar_name = NULL;
1009 char *env_in;
1010 int res;
1011 jboolean has_arg;
1012
1013 /*
1014 * If the version has already been selected, set *main_class
1015 * with the value passed through the environment (if any) and
1016 * simply return.
1017 */
1018
1019 /*
1020 * This environmental variable can be set by mJRE capable JREs
1021 * [ 1.5 thru 1.8 ]. All other aspects of mJRE processing have been
1022 * stripped by those JREs. This environmental variable allows 1.9+
1023 * JREs to be started by these mJRE capable JREs.
1024 * Note that mJRE directives in the jar manifest file would have been
1025 * ignored for a JRE started by another JRE...
1026 * .. skipped for JRE 1.5 and beyond.
1027 * .. not even checked for pre 1.5.
1028 */
1029 if ((env_in = getenv(ENV_ENTRY)) != NULL) {
1030 if (*env_in != '\0')
1031 *main_class = JLI_StringDup(env_in);
1032 return;
1033 }
1034
1035 /*
1036 * Scan through the arguments for options relevant to multiple JRE
1037 * support. Multiple JRE support existed in JRE versions 1.5 thru 1.8.
1038 *
1039 * This capability is no longer available with JRE versions 1.9 and later.
1040 * These command line options are reported as errors.
1041 */
1042
1043 argc--;
1044 argv++;
1045 while ((arg = *argv) != 0 && *arg == '-') {
1046 has_arg = IsOptionWithArgument(argc, argv);
1047 if (JLI_StrCCmp(arg, "-version:") == 0) {
1048 JLI_ReportErrorMessage(SPC_ERROR1);
1049 } else if (JLI_StrCmp(arg, "-jre-restrict-search") == 0) {
1050 JLI_ReportErrorMessage(SPC_ERROR2);
1051 } else if (JLI_StrCmp(arg, "-jre-no-restrict-search") == 0) {
1052 JLI_ReportErrorMessage(SPC_ERROR2);
1053 } else {
1054 if (JLI_StrCmp(arg, "-jar") == 0)
1055 jarflag = 1;
1056 if (IsWhiteSpaceOption(arg)) {
1057 if (has_arg) {
1058 argc--;
1059 argv++;
1060 arg = *argv;
1061 }
1062 }
1063
1064 /*
1065 * Checking for headless toolkit option in the some way as AWT does:
1066 * "true" means true and any other value means false
1067 */
1068 if (JLI_StrCmp(arg, "-Djava.awt.headless=true") == 0) {
1069 headlessflag = 1;
1070 } else if (JLI_StrCCmp(arg, "-Djava.awt.headless=") == 0) {
1071 headlessflag = 0;
1072 } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1073 splash_file_name = arg+8;
1074 }
1075 }
1076 argc--;
1077 argv++;
1078 }
1079 if (argc <= 0) { /* No operand? Possibly legit with -[full]version */
1080 operand = NULL;
1081 } else {
1082 argc--;
1083 operand = *argv++;
1084 }
1085
1086 /*
1087 * If there is a jar file, read the manifest. If the jarfile can't be
1088 * read, the manifest can't be read from the jar file, or the manifest
1089 * is corrupt, issue the appropriate error messages and exit.
1090 *
1091 * Even if there isn't a jar file, construct a manifest_info structure
1092 * containing the command line information. It's a convenient way to carry
1093 * this data around.
1094 */
1095 if (jarflag && operand) {
1096 if ((res = JLI_ParseManifest(operand, &info)) != 0) {
1097 if (res == -1)
1098 JLI_ReportErrorMessage(JAR_ERROR2, operand);
1099 else
1100 JLI_ReportErrorMessage(JAR_ERROR3, operand);
1101 exit(1);
1102 }
1103
1104 /*
1105 * Command line splash screen option should have precedence
1106 * over the manifest, so the manifest data is used only if
1107 * splash_file_name has not been initialized above during command
1108 * line parsing
1109 */
1110 if (!headlessflag && !splash_file_name && info.splashscreen_image_file_name) {
1111 splash_file_name = info.splashscreen_image_file_name;
1112 splash_jar_name = operand;
1113 }
1114 } else {
1115 info.manifest_version = NULL;
1116 info.main_class = NULL;
1117 info.jre_version = NULL;
1118 info.jre_restrict_search = 0;
1119 }
1120
1121 /*
1122 * Passing on splash screen info in environment variables
1123 */
1124 if (splash_file_name && !headlessflag) {
1125 char* splash_file_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_FILE_ENV_ENTRY "=")+JLI_StrLen(splash_file_name)+1);
1126 JLI_StrCpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "=");
1127 JLI_StrCat(splash_file_entry, splash_file_name);
1128 putenv(splash_file_entry);
1129 }
1130 if (splash_jar_name && !headlessflag) {
1131 char* splash_jar_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_JAR_ENV_ENTRY "=")+JLI_StrLen(splash_jar_name)+1);
1132 JLI_StrCpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "=");
1133 JLI_StrCat(splash_jar_entry, splash_jar_name);
1134 putenv(splash_jar_entry);
1135 }
1136
1137
1138 /*
1139 * "Valid" returns (other than unrecoverable errors) follow. Set
1140 * main_class as a side-effect of this routine.
1141 */
1142 if (info.main_class != NULL)
1143 *main_class = JLI_StringDup(info.main_class);
1144
1145 if (info.jre_version == NULL) {
1146 JLI_FreeManifest();
1147 return;
1148 }
1149
1150 }
1151
1152 /*
1153 * Test if the current argv is an option, i.e. with a leading `-`
1154 * and followed with an argument without a leading `-`.
1155 */
1156 static jboolean
1157 IsOptionWithArgument(int argc, char** argv) {
1158 char* option;
1159 char* arg;
1160
1161 if (argc <= 1)
1162 return JNI_FALSE;
1163
1164 option = *argv;
1165 arg = *(argv+1);
1166 return *option == '-' && *arg != '-';
1167 }
1168
1169 /*
1170 * Gets the option, and its argument if the option has an argument.
1171 * It will update *pargc, **pargv to the next option.
1172 */
1173 static int
1174 GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue) {
1175 int argc = *pargc;
1176 char** argv = *pargv;
1177 char* arg = *argv;
1178
1179 char* option = arg;
1180 char* value = NULL;
1181 char* equals = NULL;
1182 int kind = LAUNCHER_OPTION;
1183 jboolean has_arg = JNI_FALSE;
1184
1185 // check if this option may be a white-space option with an argument
1186 has_arg = IsOptionWithArgument(argc, argv);
1187
1188 argv++; --argc;
1189 if (IsLauncherOption(arg)) {
1190 if (has_arg) {
1191 value = *argv;
1192 argv++; --argc;
1193 }
1194 kind = IsLauncherMainOption(arg) ? LAUNCHER_MAIN_OPTION
1195 : LAUNCHER_OPTION_WITH_ARGUMENT;
1196 } else if (IsModuleOption(arg)) {
1197 kind = VM_LONG_OPTION_WITH_ARGUMENT;
1198 if (has_arg) {
1199 value = *argv;
1200 argv++; --argc;
1201 }
1202
1203 /*
1204 * Support short form alias
1205 */
1206 if (JLI_StrCmp(arg, "-p") == 0) {
1207 option = "--module-path";
1208 }
1209
1210 } else if (JLI_StrCCmp(arg, "--") == 0 && (equals = JLI_StrChr(arg, '=')) != NULL) {
1211 value = equals+1;
1212 if (JLI_StrCCmp(arg, "--list-modules=") == 0 ||
1213 JLI_StrCCmp(arg, "--module=") == 0 ||
1214 JLI_StrCCmp(arg, "--class-path=") == 0) {
1215 kind = LAUNCHER_OPTION_WITH_ARGUMENT;
1216 } else {
1217 kind = VM_LONG_OPTION;
1218 }
1219 }
1220
1221 *pargc = argc;
1222 *pargv = argv;
1223 *poption = option;
1224 *pvalue = value;
1225 return kind;
1226 }
1227
1228 /*
1229 * Parses command line arguments. Returns JNI_FALSE if launcher
1230 * should exit without starting vm, returns JNI_TRUE if vm needs
1231 * to be started to process given options. *pret (the launcher
1232 * process return value) is set to 0 for a normal exit.
1233 */
1234 static jboolean
1235 ParseArguments(int *pargc, char ***pargv,
1236 int *pmode, char **pwhat,
1237 int *pret, const char *jrepath)
1238 {
1239 int argc = *pargc;
1240 char **argv = *pargv;
1241 int mode = LM_UNKNOWN;
1242 char *arg;
1243
1244 *pret = 0;
1245
1246 while ((arg = *argv) != 0 && *arg == '-') {
1247 char *option = NULL;
1248 char *value = NULL;
1249 int kind = GetOpt(&argc, &argv, &option, &value);
1250 jboolean has_arg = value != NULL && JLI_StrLen(value) > 0;
1251
1252 /*
1253 * Option to set main entry point
1254 */
1255 if (JLI_StrCmp(arg, "-jar") == 0) {
1256 ARG_CHECK(argc, ARG_ERROR2, arg);
1257 mode = LM_JAR;
1258 } else if (JLI_StrCmp(arg, "--module") == 0 ||
1259 JLI_StrCCmp(arg, "--module=") == 0 ||
1260 JLI_StrCmp(arg, "-m") == 0) {
1261 REPORT_ERROR (has_arg, ARG_ERROR5, arg);
1262 SetMainModule(value);
1263 mode = LM_MODULE;
1264 if (has_arg) {
1265 *pwhat = value;
1266 break;
1267 }
1268 } else if (JLI_StrCmp(arg, "--class-path") == 0 ||
1269 JLI_StrCCmp(arg, "--class-path=") == 0 ||
1270 JLI_StrCmp(arg, "-classpath") == 0 ||
1271 JLI_StrCmp(arg, "-cp") == 0) {
1272 REPORT_ERROR (has_arg, ARG_ERROR1, arg);
1273 SetClassPath(value);
1274 mode = LM_CLASS;
1275 } else if (JLI_StrCmp(arg, "--list-modules") == 0 ||
1276 JLI_StrCCmp(arg, "--list-modules=") == 0) {
1277 listModules = arg;
1278
1279 // set listModules to --list-modules=<module-names> if argument is specified
1280 if (JLI_StrCmp(arg, "--list-modules") == 0 && has_arg) {
1281 static const char format[] = "%s=%s";
1282 size_t buflen = JLI_StrLen(option) + 2 + JLI_StrLen(value);
1283 listModules = JLI_MemAlloc(buflen);
1284 JLI_Snprintf(listModules, buflen, format, option, value);
1285 }
1286 return JNI_TRUE;
1287 /*
1288 * Parse white-space options
1289 */
1290 } else if (has_arg) {
1291 if (kind == VM_LONG_OPTION) {
1292 AddOption(option, NULL);
1293 } else if (kind == VM_LONG_OPTION_WITH_ARGUMENT) {
1294 AddLongFormOption(option, value);
1295 }
1296 /*
1297 * Error missing argument
1298 */
1299 } else if (!has_arg && (JLI_StrCmp(arg, "--module-path") == 0 ||
1300 JLI_StrCmp(arg, "-p") == 0 ||
1301 JLI_StrCmp(arg, "--upgrade-module-path") == 0)) {
1302 REPORT_ERROR (has_arg, ARG_ERROR4, arg);
1303
1304 } else if (!has_arg && (IsModuleOption(arg) || IsLongFormModuleOption(arg))) {
1305 REPORT_ERROR (has_arg, ARG_ERROR6, arg);
1306 /*
1307 * The following cases will cause the argument parsing to stop
1308 */
1309 } else if (JLI_StrCmp(arg, "-help") == 0 ||
1310 JLI_StrCmp(arg, "-h") == 0 ||
1311 JLI_StrCmp(arg, "-?") == 0) {
1312 printUsage = JNI_TRUE;
1313 return JNI_TRUE;
1314 } else if (JLI_StrCmp(arg, "--help") == 0) {
1315 printUsage = JNI_TRUE;
1316 printTo = USE_STDOUT;
1317 return JNI_TRUE;
1318 } else if (JLI_StrCmp(arg, "-version") == 0) {
1319 printVersion = JNI_TRUE;
1320 return JNI_TRUE;
1321 } else if (JLI_StrCmp(arg, "--version") == 0) {
1322 printVersion = JNI_TRUE;
1323 printTo = USE_STDOUT;
1324 return JNI_TRUE;
1325 } else if (JLI_StrCmp(arg, "-showversion") == 0) {
1326 showVersion = JNI_TRUE;
1327 } else if (JLI_StrCmp(arg, "--show-version") == 0) {
1328 showVersion = JNI_TRUE;
1329 printTo = USE_STDOUT;
1330 } else if (JLI_StrCmp(arg, "--dry-run") == 0) {
1331 dryRun = JNI_TRUE;
1332 } else if (JLI_StrCmp(arg, "-X") == 0) {
1333 printXUsage = JNI_TRUE;
1334 return JNI_TRUE;
1335 } else if (JLI_StrCmp(arg, "--help-extra") == 0) {
1336 printXUsage = JNI_TRUE;
1337 printTo = USE_STDOUT;
1338 return JNI_TRUE;
1339 /*
1340 * The following case checks for -XshowSettings OR -XshowSetting:SUBOPT.
1341 * In the latter case, any SUBOPT value not recognized will default to "all"
1342 */
1343 } else if (JLI_StrCmp(arg, "-XshowSettings") == 0 ||
1344 JLI_StrCCmp(arg, "-XshowSettings:") == 0) {
1345 showSettings = arg;
1346 } else if (JLI_StrCmp(arg, "-Xdiag") == 0) {
1347 AddOption("-Dsun.java.launcher.diag=true", NULL);
1348 AddOption("-Djdk.launcher.traceResolver=true", NULL);
1349 } else if (JLI_StrCmp(arg, "-Xdiag:resolver") == 0) {
1350 AddOption("-Djdk.launcher.traceResolver=true", NULL);
1351 /*
1352 * The following case provide backward compatibility with old-style
1353 * command line options.
1354 */
1355 } else if (JLI_StrCmp(arg, "-fullversion") == 0) {
1356 JLI_ReportMessage("%s full version \"%s\"", _launcher_name, GetFullVersion());
1357 return JNI_FALSE;
1358 } else if (JLI_StrCmp(arg, "--full-version") == 0) {
1359 JLI_ShowMessage("%s %s", _launcher_name, GetFullVersion());
1360 return JNI_FALSE;
1361 } else if (JLI_StrCmp(arg, "-verbosegc") == 0) {
1362 AddOption("-verbose:gc", NULL);
1363 } else if (JLI_StrCmp(arg, "-t") == 0) {
1364 AddOption("-Xt", NULL);
1365 } else if (JLI_StrCmp(arg, "-tm") == 0) {
1366 AddOption("-Xtm", NULL);
1367 } else if (JLI_StrCmp(arg, "-debug") == 0) {
1368 AddOption("-Xdebug", NULL);
1369 } else if (JLI_StrCmp(arg, "-noclassgc") == 0) {
1370 AddOption("-Xnoclassgc", NULL);
1371 } else if (JLI_StrCmp(arg, "-Xfuture") == 0) {
1372 AddOption("-Xverify:all", NULL);
1373 } else if (JLI_StrCmp(arg, "-verify") == 0) {
1374 AddOption("-Xverify:all", NULL);
1375 } else if (JLI_StrCmp(arg, "-verifyremote") == 0) {
1376 AddOption("-Xverify:remote", NULL);
1377 } else if (JLI_StrCmp(arg, "-noverify") == 0) {
1378 AddOption("-Xverify:none", NULL);
1379 } else if (JLI_StrCCmp(arg, "-ss") == 0 ||
1380 JLI_StrCCmp(arg, "-oss") == 0 ||
1381 JLI_StrCCmp(arg, "-ms") == 0 ||
1382 JLI_StrCCmp(arg, "-mx") == 0) {
1383 char *tmp = JLI_MemAlloc(JLI_StrLen(arg) + 6);
1384 sprintf(tmp, "-X%s", arg + 1); /* skip '-' */
1385 AddOption(tmp, NULL);
1386 } else if (JLI_StrCmp(arg, "-checksource") == 0 ||
1387 JLI_StrCmp(arg, "-cs") == 0 ||
1388 JLI_StrCmp(arg, "-noasyncgc") == 0) {
1389 /* No longer supported */
1390 JLI_ReportErrorMessage(ARG_WARN, arg);
1391 } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1392 ; /* Ignore machine independent options already handled */
1393 } else if (ProcessPlatformOption(arg)) {
1394 ; /* Processing of platform dependent options */
1395 } else if (RemovableOption(arg)) {
1396 ; /* Do not pass option to vm. */
1397 } else {
1398 /* java.class.path set on the command line */
1399 if (JLI_StrCCmp(arg, "-Djava.class.path=") == 0) {
1400 _have_classpath = JNI_TRUE;
1401 }
1402 AddOption(arg, NULL);
1403 }
1404 }
1405
1406 if (*pwhat == NULL && --argc >= 0) {
1407 *pwhat = *argv++;
1408 }
1409
1410 if (*pwhat == NULL) {
1411 *pret = 1;
1412 } else if (mode == LM_UNKNOWN) {
1413 /* default to LM_CLASS if -m, -jar and -cp options are
1414 * not specified */
1415 if (!_have_classpath) {
1416 SetClassPath(".");
1417 }
1418 mode = LM_CLASS;
1419 }
1420
1421 if (argc >= 0) {
1422 *pargc = argc;
1423 *pargv = argv;
1424 }
1425
1426 *pmode = mode;
1427
1428 return JNI_TRUE;
1429 }
1430
1431 /*
1432 * Initializes the Java Virtual Machine. Also frees options array when
1433 * finished.
1434 */
1435 static jboolean
1436 InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn)
1437 {
1438 JavaVMInitArgs args;
1439 jint r;
1440
1441 memset(&args, 0, sizeof(args));
1442 args.version = JNI_VERSION_1_2;
1443 args.nOptions = numOptions;
1444 args.options = options;
1445 args.ignoreUnrecognized = JNI_FALSE;
1446
1447 if (JLI_IsTraceLauncher()) {
1448 int i = 0;
1449 printf("JavaVM args:\n ");
1450 printf("version 0x%08lx, ", (long)args.version);
1451 printf("ignoreUnrecognized is %s, ",
1452 args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE");
1453 printf("nOptions is %ld\n", (long)args.nOptions);
1454 for (i = 0; i < numOptions; i++)
1455 printf(" option[%2d] = '%s'\n",
1456 i, args.options[i].optionString);
1457 }
1458
1459 r = ifn->CreateJavaVM(pvm, (void **)penv, &args);
1460 JLI_MemFree(options);
1461 return r == JNI_OK;
1462 }
1463
1464 static jclass helperClass = NULL;
1465
1466 jclass
1467 GetLauncherHelperClass(JNIEnv *env)
1468 {
1469 if (helperClass == NULL) {
1470 NULL_CHECK0(helperClass = FindBootStrapClass(env,
1471 "sun/launcher/LauncherHelper"));
1472 }
1473 return helperClass;
1474 }
1475
1476 static jmethodID makePlatformStringMID = NULL;
1477 /*
1478 * Returns a new Java string object for the specified platform string.
1479 */
1480 static jstring
1481 NewPlatformString(JNIEnv *env, char *s)
1482 {
1483 int len = (int)JLI_StrLen(s);
1484 jbyteArray ary;
1485 jclass cls = GetLauncherHelperClass(env);
1486 NULL_CHECK0(cls);
1487 if (s == NULL)
1488 return 0;
1489
1490 ary = (*env)->NewByteArray(env, len);
1491 if (ary != 0) {
1492 jstring str = 0;
1493 (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s);
1494 if (!(*env)->ExceptionOccurred(env)) {
1495 if (makePlatformStringMID == NULL) {
1496 NULL_CHECK0(makePlatformStringMID = (*env)->GetStaticMethodID(env,
1497 cls, "makePlatformString", "(Z[B)Ljava/lang/String;"));
1498 }
1499 str = (*env)->CallStaticObjectMethod(env, cls,
1500 makePlatformStringMID, USE_STDERR, ary);
1501 (*env)->DeleteLocalRef(env, ary);
1502 return str;
1503 }
1504 }
1505 return 0;
1506 }
1507
1508 /*
1509 * Returns a new array of Java string objects for the specified
1510 * array of platform strings.
1511 */
1512 jobjectArray
1513 NewPlatformStringArray(JNIEnv *env, char **strv, int strc)
1514 {
1515 jarray cls;
1516 jarray ary;
1517 int i;
1518
1519 NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String"));
1520 NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0));
1521 CHECK_EXCEPTION_RETURN_VALUE(0);
1522 for (i = 0; i < strc; i++) {
1523 jstring str = NewPlatformString(env, *strv++);
1524 NULL_CHECK0(str);
1525 (*env)->SetObjectArrayElement(env, ary, i, str);
1526 (*env)->DeleteLocalRef(env, str);
1527 }
1528 return ary;
1529 }
1530
1531 /*
1532 * Loads a class and verifies that the main class is present and it is ok to
1533 * call it for more details refer to the java implementation.
1534 */
1535 static jclass
1536 LoadMainClass(JNIEnv *env, int mode, char *name)
1537 {
1538 jmethodID mid;
1539 jstring str;
1540 jobject result;
1541 jlong start, end;
1542 jclass cls = GetLauncherHelperClass(env);
1543 NULL_CHECK0(cls);
1544 if (JLI_IsTraceLauncher()) {
1545 start = CounterGet();
1546 }
1547 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1548 "checkAndLoadMain",
1549 "(ZILjava/lang/String;)Ljava/lang/Class;"));
1550
1551 NULL_CHECK0(str = NewPlatformString(env, name));
1552 NULL_CHECK0(result = (*env)->CallStaticObjectMethod(env, cls, mid,
1553 USE_STDERR, mode, str));
1554
1555 if (JLI_IsTraceLauncher()) {
1556 end = CounterGet();
1557 printf("%ld micro seconds to load main class\n",
1558 (long)(jint)Counter2Micros(end-start));
1559 printf("----%s----\n", JLDEBUG_ENV_ENTRY);
1560 }
1561
1562 return (jclass)result;
1563 }
1564
1565 static jclass
1566 GetApplicationClass(JNIEnv *env)
1567 {
1568 jmethodID mid;
1569 jclass cls = GetLauncherHelperClass(env);
1570 NULL_CHECK0(cls);
1571 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1572 "getApplicationClass",
1573 "()Ljava/lang/Class;"));
1574
1575 return (*env)->CallStaticObjectMethod(env, cls, mid);
1576 }
1577
1578 /*
1579 * For tools, convert command line args thus:
1580 * javac -cp foo:foo/"*" -J-ms32m ...
1581 * java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ...
1582 *
1583 * Takes 4 parameters, and returns the populated arguments
1584 */
1585 static void
1586 TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv)
1587 {
1588 int argc = *pargc;
1589 char **argv = *pargv;
1590 int nargc = argc + jargc;
1591 char **nargv = JLI_MemAlloc((nargc + 1) * sizeof(char *));
1592 int i;
1593
1594 *pargc = nargc;
1595 *pargv = nargv;
1596
1597 /* Copy the VM arguments (i.e. prefixed with -J) */
1598 for (i = 0; i < jargc; i++) {
1599 const char *arg = jargv[i];
1600 if (arg[0] == '-' && arg[1] == 'J') {
1601 *nargv++ = ((arg + 2) == NULL) ? NULL : JLI_StringDup(arg + 2);
1602 }
1603 }
1604
1605 for (i = 0; i < argc; i++) {
1606 char *arg = argv[i];
1607 if (arg[0] == '-' && arg[1] == 'J') {
1608 if (arg[2] == '\0') {
1609 JLI_ReportErrorMessage(ARG_ERROR3);
1610 exit(1);
1611 }
1612 *nargv++ = arg + 2;
1613 }
1614 }
1615
1616 /* Copy the rest of the arguments */
1617 for (i = 0; i < jargc ; i++) {
1618 const char *arg = jargv[i];
1619 if (arg[0] != '-' || arg[1] != 'J') {
1620 *nargv++ = (arg == NULL) ? NULL : JLI_StringDup(arg);
1621 }
1622 }
1623 for (i = 0; i < argc; i++) {
1624 char *arg = argv[i];
1625 if (arg[0] == '-') {
1626 if (arg[1] == 'J')
1627 continue;
1628 if (IsWildCardEnabled() && arg[1] == 'c'
1629 && (JLI_StrCmp(arg, "-cp") == 0 ||
1630 JLI_StrCmp(arg, "-classpath") == 0)
1631 && i < argc - 1) {
1632 *nargv++ = arg;
1633 *nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]);
1634 i++;
1635 continue;
1636 }
1637 }
1638 *nargv++ = arg;
1639 }
1640 *nargv = 0;
1641 }
1642
1643 /*
1644 * For our tools, we try to add 3 VM options:
1645 * -Denv.class.path=<envcp>
1646 * -Dapplication.home=<apphome>
1647 * -Djava.class.path=<appcp>
1648 * <envcp> is the user's setting of CLASSPATH -- for instance the user
1649 * tells javac where to find binary classes through this environment
1650 * variable. Notice that users will be able to compile against our
1651 * tools classes (sun.tools.javac.Main) only if they explicitly add
1652 * tools.jar to CLASSPATH.
1653 * <apphome> is the directory where the application is installed.
1654 * <appcp> is the classpath to where our apps' classfiles are.
1655 */
1656 static jboolean
1657 AddApplicationOptions(int cpathc, const char **cpathv)
1658 {
1659 char *envcp, *appcp, *apphome;
1660 char home[MAXPATHLEN]; /* application home */
1661 char separator[] = { PATH_SEPARATOR, '\0' };
1662 int size, i;
1663
1664 {
1665 const char *s = getenv("CLASSPATH");
1666 if (s) {
1667 s = (char *) JLI_WildcardExpandClasspath(s);
1668 /* 40 for -Denv.class.path= */
1669 if (JLI_StrLen(s) + 40 > JLI_StrLen(s)) { // Safeguard from overflow
1670 envcp = (char *)JLI_MemAlloc(JLI_StrLen(s) + 40);
1671 sprintf(envcp, "-Denv.class.path=%s", s);
1672 AddOption(envcp, NULL);
1673 }
1674 }
1675 }
1676
1677 if (!GetApplicationHome(home, sizeof(home))) {
1678 JLI_ReportErrorMessage(CFG_ERROR5);
1679 return JNI_FALSE;
1680 }
1681
1682 /* 40 for '-Dapplication.home=' */
1683 apphome = (char *)JLI_MemAlloc(JLI_StrLen(home) + 40);
1684 sprintf(apphome, "-Dapplication.home=%s", home);
1685 AddOption(apphome, NULL);
1686
1687 /* How big is the application's classpath? */
1688 if (cpathc > 0) {
1689 size = 40; /* 40: "-Djava.class.path=" */
1690 for (i = 0; i < cpathc; i++) {
1691 size += (int)JLI_StrLen(home) + (int)JLI_StrLen(cpathv[i]) + 1; /* 1: separator */
1692 }
1693 appcp = (char *)JLI_MemAlloc(size + 1);
1694 JLI_StrCpy(appcp, "-Djava.class.path=");
1695 for (i = 0; i < cpathc; i++) {
1696 JLI_StrCat(appcp, home); /* c:\program files\myapp */
1697 JLI_StrCat(appcp, cpathv[i]); /* \lib\myapp.jar */
1698 JLI_StrCat(appcp, separator); /* ; */
1699 }
1700 appcp[JLI_StrLen(appcp)-1] = '\0'; /* remove trailing path separator */
1701 AddOption(appcp, NULL);
1702 }
1703 return JNI_TRUE;
1704 }
1705
1706 /*
1707 * inject the -Dsun.java.command pseudo property into the args structure
1708 * this pseudo property is used in the HotSpot VM to expose the
1709 * Java class name and arguments to the main method to the VM. The
1710 * HotSpot VM uses this pseudo property to store the Java class name
1711 * (or jar file name) and the arguments to the class's main method
1712 * to the instrumentation memory region. The sun.java.command pseudo
1713 * property is not exported by HotSpot to the Java layer.
1714 */
1715 void
1716 SetJavaCommandLineProp(char *what, int argc, char **argv)
1717 {
1718
1719 int i = 0;
1720 size_t len = 0;
1721 char* javaCommand = NULL;
1722 char* dashDstr = "-Dsun.java.command=";
1723
1724 if (what == NULL) {
1725 /* unexpected, one of these should be set. just return without
1726 * setting the property
1727 */
1728 return;
1729 }
1730
1731 /* determine the amount of memory to allocate assuming
1732 * the individual components will be space separated
1733 */
1734 len = JLI_StrLen(what);
1735 for (i = 0; i < argc; i++) {
1736 len += JLI_StrLen(argv[i]) + 1;
1737 }
1738
1739 /* allocate the memory */
1740 javaCommand = (char*) JLI_MemAlloc(len + JLI_StrLen(dashDstr) + 1);
1741
1742 /* build the -D string */
1743 *javaCommand = '\0';
1744 JLI_StrCat(javaCommand, dashDstr);
1745 JLI_StrCat(javaCommand, what);
1746
1747 for (i = 0; i < argc; i++) {
1748 /* the components of the string are space separated. In
1749 * the case of embedded white space, the relationship of
1750 * the white space separated components to their true
1751 * positional arguments will be ambiguous. This issue may
1752 * be addressed in a future release.
1753 */
1754 JLI_StrCat(javaCommand, " ");
1755 JLI_StrCat(javaCommand, argv[i]);
1756 }
1757
1758 AddOption(javaCommand, NULL);
1759 }
1760
1761 /*
1762 * JVM would like to know if it's created by a standard Sun launcher, or by
1763 * user native application, the following property indicates the former.
1764 */
1765 void
1766 SetJavaLauncherProp() {
1767 AddOption("-Dsun.java.launcher=SUN_STANDARD", NULL);
1768 }
1769
1770 /*
1771 * Prints the version information from the java.version and other properties.
1772 */
1773 static void
1774 PrintJavaVersion(JNIEnv *env, jboolean extraLF)
1775 {
1776 jclass ver;
1777 jmethodID print;
1778
1779 NULL_CHECK(ver = FindBootStrapClass(env, "java/lang/VersionProps"));
1780 NULL_CHECK(print = (*env)->GetStaticMethodID(env,
1781 ver,
1782 (extraLF == JNI_TRUE) ? "println" : "print",
1783 "(Z)V"
1784 )
1785 );
1786
1787 (*env)->CallStaticVoidMethod(env, ver, print, printTo);
1788 }
1789
1790 /*
1791 * Prints all the Java settings, see the java implementation for more details.
1792 */
1793 static void
1794 ShowSettings(JNIEnv *env, char *optString)
1795 {
1796 jmethodID showSettingsID;
1797 jstring joptString;
1798 jclass cls = GetLauncherHelperClass(env);
1799 NULL_CHECK(cls);
1800 NULL_CHECK(showSettingsID = (*env)->GetStaticMethodID(env, cls,
1801 "showSettings", "(ZLjava/lang/String;JJJ)V"));
1802 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1803 (*env)->CallStaticVoidMethod(env, cls, showSettingsID,
1804 USE_STDERR,
1805 joptString,
1806 (jlong)initialHeapSize,
1807 (jlong)maxHeapSize,
1808 (jlong)threadStackSize);
1809 }
1810
1811 /**
1812 * List modules supported by the runtime
1813 */
1814 static void
1815 ListModules(JNIEnv *env, char *optString)
1816 {
1817 jmethodID listModulesID;
1818 jstring joptString = NULL;
1819 jclass cls = GetLauncherHelperClass(env);
1820 NULL_CHECK(cls);
1821 NULL_CHECK(listModulesID = (*env)->GetStaticMethodID(env, cls,
1822 "listModules", "(ZLjava/lang/String;)V"));
1823 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1824 (*env)->CallStaticVoidMethod(env, cls, listModulesID,
1825 USE_STDOUT,
1826 joptString);
1827 }
1828
1829 /*
1830 * Prints default usage or the Xusage message, see sun.launcher.LauncherHelper.java
1831 */
1832 static void
1833 PrintUsage(JNIEnv* env, jboolean doXUsage)
1834 {
1835 jmethodID initHelp, vmSelect, vmSynonym, printHelp, printXUsageMessage;
1836 jstring jprogname, vm1, vm2;
1837 int i;
1838 jclass cls = GetLauncherHelperClass(env);
1839 NULL_CHECK(cls);
1840 if (doXUsage) {
1841 NULL_CHECK(printXUsageMessage = (*env)->GetStaticMethodID(env, cls,
1842 "printXUsageMessage", "(Z)V"));
1843 (*env)->CallStaticVoidMethod(env, cls, printXUsageMessage, printTo);
1844 } else {
1845 NULL_CHECK(initHelp = (*env)->GetStaticMethodID(env, cls,
1846 "initHelpMessage", "(Ljava/lang/String;)V"));
1847
1848 NULL_CHECK(vmSelect = (*env)->GetStaticMethodID(env, cls, "appendVmSelectMessage",
1849 "(Ljava/lang/String;Ljava/lang/String;)V"));
1850
1851 NULL_CHECK(vmSynonym = (*env)->GetStaticMethodID(env, cls,
1852 "appendVmSynonymMessage",
1853 "(Ljava/lang/String;Ljava/lang/String;)V"));
1854
1855 NULL_CHECK(printHelp = (*env)->GetStaticMethodID(env, cls,
1856 "printHelpMessage", "(Z)V"));
1857
1858 NULL_CHECK(jprogname = (*env)->NewStringUTF(env, _program_name));
1859
1860 /* Initialize the usage message with the usual preamble */
1861 (*env)->CallStaticVoidMethod(env, cls, initHelp, jprogname);
1862 CHECK_EXCEPTION_RETURN();
1863
1864
1865 /* Assemble the other variant part of the usage */
1866 for (i=1; i<knownVMsCount; i++) {
1867 if (knownVMs[i].flag == VM_KNOWN) {
1868 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
1869 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].name+1));
1870 (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2);
1871 CHECK_EXCEPTION_RETURN();
1872 }
1873 }
1874 for (i=1; i<knownVMsCount; i++) {
1875 if (knownVMs[i].flag == VM_ALIASED_TO) {
1876 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name));
1877 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].alias+1));
1878 (*env)->CallStaticVoidMethod(env, cls, vmSynonym, vm1, vm2);
1879 CHECK_EXCEPTION_RETURN();
1880 }
1881 }
1882
1883 /* Complete the usage message and print to stderr*/
1884 (*env)->CallStaticVoidMethod(env, cls, printHelp, printTo);
1885 }
1886 return;
1887 }
1888
1889 /*
1890 * Read the jvm.cfg file and fill the knownJVMs[] array.
1891 *
1892 * The functionality of the jvm.cfg file is subject to change without
1893 * notice and the mechanism will be removed in the future.
1894 *
1895 * The lexical structure of the jvm.cfg file is as follows:
1896 *
1897 * jvmcfg := { vmLine }
1898 * vmLine := knownLine
1899 * | aliasLine
1900 * | warnLine
1901 * | ignoreLine
1902 * | errorLine
1903 * | predicateLine
1904 * | commentLine
1905 * knownLine := flag "KNOWN" EOL
1906 * warnLine := flag "WARN" EOL
1907 * ignoreLine := flag "IGNORE" EOL
1908 * errorLine := flag "ERROR" EOL
1909 * aliasLine := flag "ALIASED_TO" flag EOL
1910 * predicateLine := flag "IF_SERVER_CLASS" flag EOL
1911 * commentLine := "#" text EOL
1912 * flag := "-" identifier
1913 *
1914 * The semantics are that when someone specifies a flag on the command line:
1915 * - if the flag appears on a knownLine, then the identifier is used as
1916 * the name of the directory holding the JVM library (the name of the JVM).
1917 * - if the flag appears as the first flag on an aliasLine, the identifier
1918 * of the second flag is used as the name of the JVM.
1919 * - if the flag appears on a warnLine, the identifier is used as the
1920 * name of the JVM, but a warning is generated.
1921 * - if the flag appears on an ignoreLine, the identifier is recognized as the
1922 * name of a JVM, but the identifier is ignored and the default vm used
1923 * - if the flag appears on an errorLine, an error is generated.
1924 * - if the flag appears as the first flag on a predicateLine, and
1925 * the machine on which you are running passes the predicate indicated,
1926 * then the identifier of the second flag is used as the name of the JVM,
1927 * otherwise the identifier of the first flag is used as the name of the JVM.
1928 * If no flag is given on the command line, the first vmLine of the jvm.cfg
1929 * file determines the name of the JVM.
1930 * PredicateLines are only interpreted on first vmLine of a jvm.cfg file,
1931 * since they only make sense if someone hasn't specified the name of the
1932 * JVM on the command line.
1933 *
1934 * The intent of the jvm.cfg file is to allow several JVM libraries to
1935 * be installed in different subdirectories of a single JRE installation,
1936 * for space-savings and convenience in testing.
1937 * The intent is explicitly not to provide a full aliasing or predicate
1938 * mechanism.
1939 */
1940 jint
1941 ReadKnownVMs(const char *jvmCfgName, jboolean speculative)
1942 {
1943 FILE *jvmCfg;
1944 char line[MAXPATHLEN+20];
1945 int cnt = 0;
1946 int lineno = 0;
1947 jlong start, end;
1948 int vmType;
1949 char *tmpPtr;
1950 char *altVMName = NULL;
1951 char *serverClassVMName = NULL;
1952 static char *whiteSpace = " \t";
1953 if (JLI_IsTraceLauncher()) {
1954 start = CounterGet();
1955 }
1956
1957 jvmCfg = fopen(jvmCfgName, "r");
1958 if (jvmCfg == NULL) {
1959 if (!speculative) {
1960 JLI_ReportErrorMessage(CFG_ERROR6, jvmCfgName);
1961 exit(1);
1962 } else {
1963 return -1;
1964 }
1965 }
1966 while (fgets(line, sizeof(line), jvmCfg) != NULL) {
1967 vmType = VM_UNKNOWN;
1968 lineno++;
1969 if (line[0] == '#')
1970 continue;
1971 if (line[0] != '-') {
1972 JLI_ReportErrorMessage(CFG_WARN2, lineno, jvmCfgName);
1973 }
1974 if (cnt >= knownVMsLimit) {
1975 GrowKnownVMs(cnt);
1976 }
1977 line[JLI_StrLen(line)-1] = '\0'; /* remove trailing newline */
1978 tmpPtr = line + JLI_StrCSpn(line, whiteSpace);
1979 if (*tmpPtr == 0) {
1980 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
1981 } else {
1982 /* Null-terminate this string for JLI_StringDup below */
1983 *tmpPtr++ = 0;
1984 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
1985 if (*tmpPtr == 0) {
1986 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
1987 } else {
1988 if (!JLI_StrCCmp(tmpPtr, "KNOWN")) {
1989 vmType = VM_KNOWN;
1990 } else if (!JLI_StrCCmp(tmpPtr, "ALIASED_TO")) {
1991 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
1992 if (*tmpPtr != 0) {
1993 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
1994 }
1995 if (*tmpPtr == 0) {
1996 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
1997 } else {
1998 /* Null terminate altVMName */
1999 altVMName = tmpPtr;
2000 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2001 *tmpPtr = 0;
2002 vmType = VM_ALIASED_TO;
2003 }
2004 } else if (!JLI_StrCCmp(tmpPtr, "WARN")) {
2005 vmType = VM_WARN;
2006 } else if (!JLI_StrCCmp(tmpPtr, "IGNORE")) {
2007 vmType = VM_IGNORE;
2008 } else if (!JLI_StrCCmp(tmpPtr, "ERROR")) {
2009 vmType = VM_ERROR;
2010 } else if (!JLI_StrCCmp(tmpPtr, "IF_SERVER_CLASS")) {
2011 /* ignored */
2012 } else {
2013 JLI_ReportErrorMessage(CFG_WARN5, lineno, &jvmCfgName[0]);
2014 vmType = VM_KNOWN;
2015 }
2016 }
2017 }
2018
2019 JLI_TraceLauncher("jvm.cfg[%d] = ->%s<-\n", cnt, line);
2020 if (vmType != VM_UNKNOWN) {
2021 knownVMs[cnt].name = JLI_StringDup(line);
2022 knownVMs[cnt].flag = vmType;
2023 switch (vmType) {
2024 default:
2025 break;
2026 case VM_ALIASED_TO:
2027 knownVMs[cnt].alias = JLI_StringDup(altVMName);
2028 JLI_TraceLauncher(" name: %s vmType: %s alias: %s\n",
2029 knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias);
2030 break;
2031 }
2032 cnt++;
2033 }
2034 }
2035 fclose(jvmCfg);
2036 knownVMsCount = cnt;
2037
2038 if (JLI_IsTraceLauncher()) {
2039 end = CounterGet();
2040 printf("%ld micro seconds to parse jvm.cfg\n",
2041 (long)(jint)Counter2Micros(end-start));
2042 }
2043
2044 return cnt;
2045 }
2046
2047
2048 static void
2049 GrowKnownVMs(int minimum)
2050 {
2051 struct vmdesc* newKnownVMs;
2052 int newMax;
2053
2054 newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit));
2055 if (newMax <= minimum) {
2056 newMax = minimum;
2057 }
2058 newKnownVMs = (struct vmdesc*) JLI_MemAlloc(newMax * sizeof(struct vmdesc));
2059 if (knownVMs != NULL) {
2060 memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc));
2061 }
2062 JLI_MemFree(knownVMs);
2063 knownVMs = newKnownVMs;
2064 knownVMsLimit = newMax;
2065 }
2066
2067
2068 /* Returns index of VM or -1 if not found */
2069 static int
2070 KnownVMIndex(const char* name)
2071 {
2072 int i;
2073 if (JLI_StrCCmp(name, "-J") == 0) name += 2;
2074 for (i = 0; i < knownVMsCount; i++) {
2075 if (!JLI_StrCmp(name, knownVMs[i].name)) {
2076 return i;
2077 }
2078 }
2079 return -1;
2080 }
2081
2082 static void
2083 FreeKnownVMs()
2084 {
2085 int i;
2086 for (i = 0; i < knownVMsCount; i++) {
2087 JLI_MemFree(knownVMs[i].name);
2088 knownVMs[i].name = NULL;
2089 }
2090 JLI_MemFree(knownVMs);
2091 }
2092
2093 /*
2094 * Displays the splash screen according to the jar file name
2095 * and image file names stored in environment variables
2096 */
2097 void
2098 ShowSplashScreen()
2099 {
2100 const char *jar_name = getenv(SPLASH_JAR_ENV_ENTRY);
2101 const char *file_name = getenv(SPLASH_FILE_ENV_ENTRY);
2102 int data_size;
2103 void *image_data = NULL;
2104 float scale_factor = 1;
2105 char *scaled_splash_name = NULL;
2106 jboolean isImageScaled = JNI_FALSE;
2107 size_t maxScaledImgNameLength = 0;
2108 if (file_name == NULL){
2109 return;
2110 }
2111 maxScaledImgNameLength = DoSplashGetScaledImgNameMaxPstfixLen(file_name);
2112
2113 scaled_splash_name = JLI_MemAlloc(
2114 maxScaledImgNameLength * sizeof(char));
2115 isImageScaled = DoSplashGetScaledImageName(jar_name, file_name,
2116 &scale_factor,
2117 scaled_splash_name, maxScaledImgNameLength);
2118 if (jar_name) {
2119
2120 if (isImageScaled) {
2121 image_data = JLI_JarUnpackFile(
2122 jar_name, scaled_splash_name, &data_size);
2123 }
2124
2125 if (!image_data) {
2126 scale_factor = 1;
2127 image_data = JLI_JarUnpackFile(
2128 jar_name, file_name, &data_size);
2129 }
2130 if (image_data) {
2131 DoSplashInit();
2132 DoSplashSetScaleFactor(scale_factor);
2133 DoSplashLoadMemory(image_data, data_size);
2134 JLI_MemFree(image_data);
2135 }
2136 } else {
2137 DoSplashInit();
2138 if (isImageScaled) {
2139 DoSplashSetScaleFactor(scale_factor);
2140 DoSplashLoadFile(scaled_splash_name);
2141 } else {
2142 DoSplashLoadFile(file_name);
2143 }
2144 }
2145 JLI_MemFree(scaled_splash_name);
2146
2147 DoSplashSetFileJarName(file_name, jar_name);
2148
2149 /*
2150 * Done with all command line processing and potential re-execs so
2151 * clean up the environment.
2152 */
2153 (void)UnsetEnv(ENV_ENTRY);
2154 (void)UnsetEnv(SPLASH_FILE_ENV_ENTRY);
2155 (void)UnsetEnv(SPLASH_JAR_ENV_ENTRY);
2156
2157 JLI_MemFree(splash_jar_entry);
2158 JLI_MemFree(splash_file_entry);
2159
2160 }
2161
2162 const char*
2163 GetFullVersion()
2164 {
2165 return _fVersion;
2166 }
2167
2168 const char*
2169 GetProgramName()
2170 {
2171 return _program_name;
2172 }
2173
2174 const char*
2175 GetLauncherName()
2176 {
2177 return _launcher_name;
2178 }
2179
2180 jboolean
2181 IsJavaArgs()
2182 {
2183 return _is_java_args;
2184 }
2185
2186 static jboolean
2187 IsWildCardEnabled()
2188 {
2189 return _wc_enabled;
2190 }
2191
2192 int
2193 ContinueInNewThread(InvocationFunctions* ifn, jlong threadStackSize,
2194 int argc, char **argv,
2195 int mode, char *what, int ret)
2196 {
2197
2198 /*
2199 * If user doesn't specify stack size, check if VM has a preference.
2200 * Note that HotSpot no longer supports JNI_VERSION_1_1 but it will
2201 * return its default stack size through the init args structure.
2202 */
2203 if (threadStackSize == 0) {
2204 struct JDK1_1InitArgs args1_1;
2205 memset((void*)&args1_1, 0, sizeof(args1_1));
2206 args1_1.version = JNI_VERSION_1_1;
2207 ifn->GetDefaultJavaVMInitArgs(&args1_1); /* ignore return value */
2208 if (args1_1.javaStackSize > 0) {
2209 threadStackSize = args1_1.javaStackSize;
2210 }
2211 }
2212
2213 { /* Create a new thread to create JVM and invoke main method */
2214 JavaMainArgs args;
2215 int rslt;
2216
2217 args.argc = argc;
2218 args.argv = argv;
2219 args.mode = mode;
2220 args.what = what;
2221 args.ifn = *ifn;
2222
2223 rslt = ContinueInNewThread0(JavaMain, threadStackSize, (void*)&args);
2224 /* If the caller has deemed there is an error we
2225 * simply return that, otherwise we return the value of
2226 * the callee
2227 */
2228 return (ret != 0) ? ret : rslt;
2229 }
2230 }
2231
2232 static void
2233 DumpState()
2234 {
2235 if (!JLI_IsTraceLauncher()) return ;
2236 printf("Launcher state:\n");
2237 printf("\tFirst application arg index: %d\n", JLI_GetAppArgIndex());
2238 printf("\tdebug:%s\n", (JLI_IsTraceLauncher() == JNI_TRUE) ? "on" : "off");
2239 printf("\tjavargs:%s\n", (_is_java_args == JNI_TRUE) ? "on" : "off");
2240 printf("\tprogram name:%s\n", GetProgramName());
2241 printf("\tlauncher name:%s\n", GetLauncherName());
2242 printf("\tjavaw:%s\n", (IsJavaw() == JNI_TRUE) ? "on" : "off");
2243 printf("\tfullversion:%s\n", GetFullVersion());
2244 }
2245
2246 /*
2247 * Return JNI_TRUE for an option string that has no effect but should
2248 * _not_ be passed on to the vm; return JNI_FALSE otherwise. On
2249 * Solaris SPARC, this screening needs to be done if:
2250 * -d32 or -d64 is passed to a binary with an unmatched data model
2251 * (the exec in CreateExecutionEnvironment removes -d<n> options and points the
2252 * exec to the proper binary). In the case of when the data model and the
2253 * requested version is matched, an exec would not occur, and these options
2254 * were erroneously passed to the vm.
2255 */
2256 jboolean
2257 RemovableOption(char * option)
2258 {
2259 /*
2260 * Unconditionally remove both -d32 and -d64 options since only
2261 * the last such options has an effect; e.g.
2262 * java -d32 -d64 -d32 -version
2263 * is equivalent to
2264 * java -d32 -version
2265 */
2266
2267 if( (JLI_StrCCmp(option, "-d32") == 0 ) ||
2268 (JLI_StrCCmp(option, "-d64") == 0 ) )
2269 return JNI_TRUE;
2270 else
2271 return JNI_FALSE;
2272 }
2273
2274 /*
2275 * A utility procedure to always print to stderr
2276 */
2277 void
2278 JLI_ReportMessage(const char* fmt, ...)
2279 {
2280 va_list vl;
2281 va_start(vl, fmt);
2282 vfprintf(stderr, fmt, vl);
2283 fprintf(stderr, "\n");
2284 va_end(vl);
2285 }
2286
2287 /*
2288 * A utility procedure to always print to stdout
2289 */
2290 void
2291 JLI_ShowMessage(const char* fmt, ...)
2292 {
2293 va_list vl;
2294 va_start(vl, fmt);
2295 vfprintf(stdout, fmt, vl);
2296 fprintf(stdout, "\n");
2297 va_end(vl);
2298 }