1 /*
   2  * Copyright (c) 1995, 2018, 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 #include "jni.h"
  56 
  57 /*
  58  * A NOTE TO DEVELOPERS: For performance reasons it is important that
  59  * the program image remain relatively small until after SelectVersion
  60  * CreateExecutionEnvironment have finished their possibly recursive
  61  * processing. Watch everything, but resist all temptations to use Java
  62  * interfaces.
  63  */
  64 
  65 #define USE_STDERR JNI_TRUE     /* we usually print to stderr */
  66 #define USE_STDOUT JNI_FALSE
  67 
  68 static jboolean printVersion = JNI_FALSE; /* print and exit */
  69 static jboolean showVersion = JNI_FALSE;  /* print but continue */
  70 static jboolean printUsage = JNI_FALSE;   /* print and exit*/
  71 static jboolean printTo = USE_STDERR;     /* where to print version/usage */
  72 static jboolean printXUsage = JNI_FALSE;  /* print and exit*/
  73 static jboolean dryRun = JNI_FALSE;       /* initialize VM and exit */
  74 static char     *showSettings = NULL;     /* print but continue */
  75 static jboolean showResolvedModules = JNI_FALSE;
  76 static jboolean listModules = JNI_FALSE;
  77 static char     *describeModule = NULL;
  78 static jboolean validateModules = JNI_FALSE;
  79 
  80 static const char *_program_name;
  81 static const char *_launcher_name;
  82 static jboolean _is_java_args = JNI_FALSE;
  83 static jboolean _have_classpath = JNI_FALSE;
  84 static const char *_fVersion;
  85 static jboolean _wc_enabled = JNI_FALSE;
  86 
  87 /*
  88  * Entries for splash screen environment variables.
  89  * putenv is performed in SelectVersion. We need
  90  * them in memory until UnsetEnv, so they are made static
  91  * global instead of auto local.
  92  */
  93 static char* splash_file_entry = NULL;
  94 static char* splash_jar_entry = NULL;
  95 
  96 /*
  97  * List of VM options to be specified when the VM is created.
  98  */
  99 static JavaVMOption *options;
 100 static int numOptions, maxOptions;
 101 
 102 /*
 103  * Prototypes for functions internal to launcher.
 104  */
 105 static void SetClassPath(const char *s);
 106 static void SetMainModule(const char *s);
 107 static void SelectVersion(int argc, char **argv, char **main_class);
 108 static void SetJvmEnvironment(int argc, char **argv);
 109 static jboolean ParseArguments(int *pargc, char ***pargv,
 110                                int *pmode, char **pwhat,
 111                                int *pret, const char *jrepath);
 112 static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv,
 113                               InvocationFunctions *ifn);
 114 static jstring NewPlatformString(JNIEnv *env, char *s);
 115 static jclass LoadMainClass(JNIEnv *env, int mode, char *name);
 116 static jclass GetApplicationClass(JNIEnv *env);
 117 
 118 static void TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv);
 119 static jboolean AddApplicationOptions(int cpathc, const char **cpathv);
 120 static void SetApplicationClassPath(const char**);
 121 
 122 static void PrintJavaVersion(JNIEnv *env, jboolean extraLF);
 123 static void PrintUsage(JNIEnv* env, jboolean doXUsage);
 124 static void ShowSettings(JNIEnv* env, char *optString);
 125 static void ShowResolvedModules(JNIEnv* env);
 126 static void ListModules(JNIEnv* env);
 127 static void DescribeModule(JNIEnv* env, char* optString);
 128 static jboolean ValidateModules(JNIEnv* env);
 129 
 130 static void SetPaths(int argc, char **argv);
 131 
 132 static void DumpState();
 133 
 134 enum OptionKind {
 135     LAUNCHER_OPTION = 0,
 136     LAUNCHER_OPTION_WITH_ARGUMENT,
 137     LAUNCHER_MAIN_OPTION,
 138     VM_LONG_OPTION,
 139     VM_LONG_OPTION_WITH_ARGUMENT,
 140     VM_OPTION
 141 };
 142 
 143 static int GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue);
 144 static jboolean IsOptionWithArgument(int argc, char **argv);
 145 
 146 /* Maximum supported entries from jvm.cfg. */
 147 #define INIT_MAX_KNOWN_VMS      10
 148 
 149 /* Values for vmdesc.flag */
 150 enum vmdesc_flag {
 151     VM_UNKNOWN = -1,
 152     VM_KNOWN,
 153     VM_ALIASED_TO,
 154     VM_WARN,
 155     VM_ERROR,
 156     VM_IF_SERVER_CLASS,
 157     VM_IGNORE
 158 };
 159 
 160 struct vmdesc {
 161     char *name;
 162     int flag;
 163     char *alias;
 164     char *server_class;
 165 };
 166 static struct vmdesc *knownVMs = NULL;
 167 static int knownVMsCount = 0;
 168 static int knownVMsLimit = 0;
 169 
 170 static void GrowKnownVMs(int minimum);
 171 static int  KnownVMIndex(const char* name);
 172 static void FreeKnownVMs();
 173 static jboolean IsWildCardEnabled();
 174 
 175 
 176 #define SOURCE_LAUNCHER_MAIN_ENTRY "jdk.compiler/com.sun.tools.javac.launcher.Main"
 177 
 178 /*
 179  * This reports error.  VM will not be created and no usage is printed.
 180  */
 181 #define REPORT_ERROR(AC_ok, AC_failure_message, AC_questionable_arg) \
 182     do { \
 183         if (!AC_ok) { \
 184             JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \
 185             printUsage = JNI_FALSE; \
 186             *pret = 1; \
 187             return JNI_FALSE; \
 188         } \
 189     } while (JNI_FALSE)
 190 
 191 #define ARG_CHECK(AC_arg_count, AC_failure_message, AC_questionable_arg) \
 192     do { \
 193         if (AC_arg_count < 1) { \
 194             JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \
 195             printUsage = JNI_TRUE; \
 196             *pret = 1; \
 197             return JNI_TRUE; \
 198         } \
 199     } while (JNI_FALSE)
 200 
 201 /*
 202  * Running Java code in primordial thread caused many problems. We will
 203  * create a new thread to invoke JVM. See 6316197 for more information.
 204  */
 205 static jlong threadStackSize    = 0;  /* stack size of the new thread */
 206 static jlong maxHeapSize        = 0;  /* max heap size */
 207 static jlong initialHeapSize    = 0;  /* inital heap size */
 208 
 209 /*
 210  * A minimum -Xss stack size suitable for all platforms.
 211  */
 212 #ifndef STACK_SIZE_MINIMUM
 213 #define STACK_SIZE_MINIMUM (64 * KB)
 214 #endif
 215 
 216 /*
 217  * Entry point.
 218  */
 219 JNIEXPORT int JNICALL
 220 JLI_Launch(int argc, char ** argv,              /* main argc, argv */
 221         int jargc, const char** jargv,          /* java args */
 222         int appclassc, const char** appclassv,  /* app classpath */
 223         const char* fullversion,                /* full version defined */
 224         const char* dotversion,                 /* UNUSED dot version defined */
 225         const char* pname,                      /* program name */
 226         const char* lname,                      /* launcher name */
 227         jboolean javaargs,                      /* JAVA_ARGS */
 228         jboolean cpwildcard,                    /* classpath wildcard*/
 229         jboolean javaw,                         /* windows-only javaw */
 230         jint ergo                               /* unused */
 231 )
 232 {
 233     int mode = LM_UNKNOWN;
 234     char *what = NULL;
 235     char *main_class = NULL;
 236     int ret;
 237     InvocationFunctions ifn;
 238     jlong start, end;
 239     char jvmpath[MAXPATHLEN];
 240     char jrepath[MAXPATHLEN];
 241     char jvmcfg[MAXPATHLEN];
 242 
 243     _fVersion = fullversion;
 244     _launcher_name = lname;
 245     _program_name = pname;
 246     _is_java_args = javaargs;
 247     _wc_enabled = cpwildcard;
 248 
 249     InitLauncher(javaw);
 250     DumpState();
 251     if (JLI_IsTraceLauncher()) {
 252         int i;
 253         printf("Java args:\n");
 254         for (i = 0; i < jargc ; i++) {
 255             printf("jargv[%d] = %s\n", i, jargv[i]);
 256         }
 257         printf("Command line args:\n");
 258         for (i = 0; i < argc ; i++) {
 259             printf("argv[%d] = %s\n", i, argv[i]);
 260         }
 261         AddOption("-Dsun.java.launcher.diag=true", NULL);
 262     }
 263 
 264     /*
 265      * SelectVersion() has several responsibilities:
 266      *
 267      *  1) Disallow specification of another JRE.  With 1.9, another
 268      *     version of the JRE cannot be invoked.
 269      *  2) Allow for a JRE version to invoke JDK 1.9 or later.  Since
 270      *     all mJRE directives have been stripped from the request but
 271      *     the pre 1.9 JRE [ 1.6 thru 1.8 ], it is as if 1.9+ has been
 272      *     invoked from the command line.
 273      */
 274     SelectVersion(argc, argv, &main_class);
 275 
 276     CreateExecutionEnvironment(&argc, &argv,
 277                                jrepath, sizeof(jrepath),
 278                                jvmpath, sizeof(jvmpath),
 279                                jvmcfg,  sizeof(jvmcfg));
 280 
 281     if (!IsJavaArgs()) {
 282         SetJvmEnvironment(argc,argv);
 283     }
 284 
 285     ifn.CreateJavaVM = 0;
 286     ifn.GetDefaultJavaVMInitArgs = 0;
 287 
 288     if (JLI_IsTraceLauncher()) {
 289         start = CounterGet();
 290     }
 291 
 292     if (!LoadJavaVM(jvmpath, &ifn)) {
 293         return(6);
 294     }
 295 
 296     if (JLI_IsTraceLauncher()) {
 297         end   = CounterGet();
 298     }
 299 
 300     JLI_TraceLauncher("%ld micro seconds to LoadJavaVM\n",
 301              (long)(jint)Counter2Micros(end-start));
 302 
 303     ++argv;
 304     --argc;
 305 
 306     if (IsJavaArgs()) {
 307         /* Preprocess wrapper arguments */
 308         TranslateApplicationArgs(jargc, jargv, &argc, &argv);
 309         if (!AddApplicationOptions(appclassc, appclassv)) {
 310             return(1);
 311         }
 312     } else {
 313         /* Set default CLASSPATH */
 314         char* cpath = getenv("CLASSPATH");
 315         if (cpath != NULL) {
 316             SetClassPath(cpath);
 317         }
 318     }
 319 
 320     /* Parse command line options; if the return value of
 321      * ParseArguments is false, the program should exit.
 322      */
 323     if (!ParseArguments(&argc, &argv, &mode, &what, &ret, jrepath)) {
 324         return(ret);
 325     }
 326 
 327     /* Override class path if -jar flag was specified */
 328     if (mode == LM_JAR) {
 329         SetClassPath(what);     /* Override class path */
 330     }
 331 
 332     /* set the -Dsun.java.command pseudo property */
 333     SetJavaCommandLineProp(what, argc, argv);
 334 
 335     /* Set the -Dsun.java.launcher pseudo property */
 336     SetJavaLauncherProp();
 337 
 338     /* set the -Dsun.java.launcher.* platform properties */
 339     SetJavaLauncherPlatformProps();
 340 
 341     return JVMInit(&ifn, threadStackSize, argc, argv, mode, what, ret);
 342 }
 343 /*
 344  * Always detach the main thread so that it appears to have ended when
 345  * the application's main method exits.  This will invoke the
 346  * uncaught exception handler machinery if main threw an
 347  * exception.  An uncaught exception handler cannot change the
 348  * launcher's return code except by calling System.exit.
 349  *
 350  * Wait for all non-daemon threads to end, then destroy the VM.
 351  * This will actually create a trivial new Java waiter thread
 352  * named "DestroyJavaVM", but this will be seen as a different
 353  * thread from the one that executed main, even though they are
 354  * the same C thread.  This allows mainThread.join() and
 355  * mainThread.isAlive() to work as expected.
 356  */
 357 #define LEAVE() \
 358     do { \
 359         if ((*vm)->DetachCurrentThread(vm) != JNI_OK) { \
 360             JLI_ReportErrorMessage(JVM_ERROR2); \
 361             ret = 1; \
 362         } \
 363         if (JNI_TRUE) { \
 364             (*vm)->DestroyJavaVM(vm); \
 365             return ret; \
 366         } \
 367     } while (JNI_FALSE)
 368 
 369 #define CHECK_EXCEPTION_NULL_LEAVE(CENL_exception) \
 370     do { \
 371         if ((*env)->ExceptionOccurred(env)) { \
 372             JLI_ReportExceptionDescription(env); \
 373             LEAVE(); \
 374         } \
 375         if ((CENL_exception) == NULL) { \
 376             JLI_ReportErrorMessage(JNI_ERROR); \
 377             LEAVE(); \
 378         } \
 379     } while (JNI_FALSE)
 380 
 381 #define CHECK_EXCEPTION_LEAVE(CEL_return_value) \
 382     do { \
 383         if ((*env)->ExceptionOccurred(env)) { \
 384             JLI_ReportExceptionDescription(env); \
 385             ret = (CEL_return_value); \
 386             LEAVE(); \
 387         } \
 388     } while (JNI_FALSE)
 389 
 390 
 391 int JNICALL
 392 JavaMain(void * _args)
 393 {
 394     JavaMainArgs *args = (JavaMainArgs *)_args;
 395     int argc = args->argc;
 396     char **argv = args->argv;
 397     int mode = args->mode;
 398     char *what = args->what;
 399     InvocationFunctions ifn = args->ifn;
 400 
 401     JavaVM *vm = 0;
 402     JNIEnv *env = 0;
 403     jclass mainClass = NULL;
 404     jclass appClass = NULL; // actual application class being launched
 405     jmethodID mainID;
 406     jobjectArray mainArgs;
 407     int ret = 0;
 408     jlong start, end;
 409 
 410     RegisterThread();
 411 
 412     /* Initialize the virtual machine */
 413     start = CounterGet();
 414     if (!InitializeJVM(&vm, &env, &ifn)) {
 415         JLI_ReportErrorMessage(JVM_ERROR1);
 416         exit(1);
 417     }
 418 
 419     if (showSettings != NULL) {
 420         ShowSettings(env, showSettings);
 421         CHECK_EXCEPTION_LEAVE(1);
 422     }
 423 
 424     // show resolved modules and continue
 425     if (showResolvedModules) {
 426         ShowResolvedModules(env);
 427         CHECK_EXCEPTION_LEAVE(1);
 428     }
 429 
 430     // list observable modules, then exit
 431     if (listModules) {
 432         ListModules(env);
 433         CHECK_EXCEPTION_LEAVE(1);
 434         LEAVE();
 435     }
 436 
 437     // describe a module, then exit
 438     if (describeModule != NULL) {
 439         DescribeModule(env, describeModule);
 440         CHECK_EXCEPTION_LEAVE(1);
 441         LEAVE();
 442     }
 443 
 444     // validate modules on the module path, then exit
 445     if (validateModules) {
 446         jboolean okay = ValidateModules(env);
 447         CHECK_EXCEPTION_LEAVE(1);
 448         if (!okay) ret = 1;
 449         LEAVE();
 450     }
 451 
 452     if (printVersion || showVersion) {
 453         PrintJavaVersion(env, showVersion);
 454         CHECK_EXCEPTION_LEAVE(0);
 455         if (printVersion) {
 456             LEAVE();
 457         }
 458     }
 459 
 460     /* If the user specified neither a class name nor a JAR file */
 461     if (printXUsage || printUsage || what == 0 || mode == LM_UNKNOWN) {
 462         PrintUsage(env, printXUsage);
 463         CHECK_EXCEPTION_LEAVE(1);
 464         LEAVE();
 465     }
 466 
 467     FreeKnownVMs(); /* after last possible PrintUsage */
 468 
 469     if (JLI_IsTraceLauncher()) {
 470         end = CounterGet();
 471         JLI_TraceLauncher("%ld micro seconds to InitializeJVM\n",
 472                (long)(jint)Counter2Micros(end-start));
 473     }
 474 
 475     /* At this stage, argc/argv have the application's arguments */
 476     if (JLI_IsTraceLauncher()){
 477         int i;
 478         printf("%s is '%s'\n", launchModeNames[mode], what);
 479         printf("App's argc is %d\n", argc);
 480         for (i=0; i < argc; i++) {
 481             printf("    argv[%2d] = '%s'\n", i, argv[i]);
 482         }
 483     }
 484 
 485     ret = 1;
 486 
 487     /*
 488      * Get the application's main class. It also checks if the main
 489      * method exists.
 490      *
 491      * See bugid 5030265.  The Main-Class name has already been parsed
 492      * from the manifest, but not parsed properly for UTF-8 support.
 493      * Hence the code here ignores the value previously extracted and
 494      * uses the pre-existing code to reextract the value.  This is
 495      * possibly an end of release cycle expedient.  However, it has
 496      * also been discovered that passing some character sets through
 497      * the environment has "strange" behavior on some variants of
 498      * Windows.  Hence, maybe the manifest parsing code local to the
 499      * launcher should never be enhanced.
 500      *
 501      * Hence, future work should either:
 502      *     1)   Correct the local parsing code and verify that the
 503      *          Main-Class attribute gets properly passed through
 504      *          all environments,
 505      *     2)   Remove the vestages of maintaining main_class through
 506      *          the environment (and remove these comments).
 507      *
 508      * This method also correctly handles launching existing JavaFX
 509      * applications that may or may not have a Main-Class manifest entry.
 510      */
 511     mainClass = LoadMainClass(env, mode, what);
 512     CHECK_EXCEPTION_NULL_LEAVE(mainClass);
 513     /*
 514      * In some cases when launching an application that needs a helper, e.g., a
 515      * JavaFX application with no main method, the mainClass will not be the
 516      * applications own main class but rather a helper class. To keep things
 517      * consistent in the UI we need to track and report the application main class.
 518      */
 519     appClass = GetApplicationClass(env);
 520     NULL_CHECK_RETURN_VALUE(appClass, -1);
 521 
 522     /* Build platform specific argument array */
 523     mainArgs = CreateApplicationArgs(env, argv, argc);
 524     CHECK_EXCEPTION_NULL_LEAVE(mainArgs);
 525 
 526     if (dryRun) {
 527         ret = 0;
 528         LEAVE();
 529     }
 530 
 531     /*
 532      * PostJVMInit uses the class name as the application name for GUI purposes,
 533      * for example, on OSX this sets the application name in the menu bar for
 534      * both SWT and JavaFX. So we'll pass the actual application class here
 535      * instead of mainClass as that may be a launcher or helper class instead
 536      * of the application class.
 537      */
 538     PostJVMInit(env, appClass, vm);
 539     CHECK_EXCEPTION_LEAVE(1);
 540 
 541     /*
 542      * The LoadMainClass not only loads the main class, it will also ensure
 543      * that the main method's signature is correct, therefore further checking
 544      * is not required. The main method is invoked here so that extraneous java
 545      * stacks are not in the application stack trace.
 546      */
 547     mainID = (*env)->GetStaticMethodID(env, mainClass, "main",
 548                                        "([Ljava/lang/String;)V");
 549     CHECK_EXCEPTION_NULL_LEAVE(mainID);
 550 
 551     /* Invoke main method. */
 552     (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs);
 553 
 554     /*
 555      * The launcher's exit code (in the absence of calls to
 556      * System.exit) will be non-zero if main threw an exception.
 557      */
 558     ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1;
 559 
 560     LEAVE();
 561 }
 562 
 563 /*
 564  * Test if the given name is one of the class path options.
 565  */
 566 static jboolean
 567 IsClassPathOption(const char* name) {
 568     return JLI_StrCmp(name, "-classpath") == 0 ||
 569            JLI_StrCmp(name, "-cp") == 0 ||
 570            JLI_StrCmp(name, "--class-path") == 0;
 571 }
 572 
 573 /*
 574  * Test if the given name is a launcher option taking the main entry point.
 575  */
 576 static jboolean
 577 IsLauncherMainOption(const char* name) {
 578     return JLI_StrCmp(name, "--module") == 0 ||
 579            JLI_StrCmp(name, "-m") == 0;
 580 }
 581 
 582 /*
 583  * Test if the given name is a white-space launcher option.
 584  */
 585 static jboolean
 586 IsLauncherOption(const char* name) {
 587     return IsClassPathOption(name) ||
 588            IsLauncherMainOption(name) ||
 589            JLI_StrCmp(name, "--describe-module") == 0 ||
 590            JLI_StrCmp(name, "-d") == 0 ||
 591            JLI_StrCmp(name, "--source") == 0;
 592 }
 593 
 594 /*
 595  * Test if the given name is a module-system white-space option that
 596  * will be passed to the VM with its corresponding long-form option
 597  * name and "=" delimiter.
 598  */
 599 static jboolean
 600 IsModuleOption(const char* name) {
 601     return JLI_StrCmp(name, "--module-path") == 0 ||
 602            JLI_StrCmp(name, "-p") == 0 ||
 603            JLI_StrCmp(name, "--upgrade-module-path") == 0 ||
 604            JLI_StrCmp(name, "--add-modules") == 0 ||
 605            JLI_StrCmp(name, "--limit-modules") == 0 ||
 606            JLI_StrCmp(name, "--add-exports") == 0 ||
 607            JLI_StrCmp(name, "--add-opens") == 0 ||
 608            JLI_StrCmp(name, "--add-reads") == 0 ||
 609            JLI_StrCmp(name, "--patch-module") == 0;
 610 }
 611 
 612 static jboolean
 613 IsLongFormModuleOption(const char* name) {
 614     return JLI_StrCCmp(name, "--module-path=") == 0 ||
 615            JLI_StrCCmp(name, "--upgrade-module-path=") == 0 ||
 616            JLI_StrCCmp(name, "--add-modules=") == 0 ||
 617            JLI_StrCCmp(name, "--limit-modules=") == 0 ||
 618            JLI_StrCCmp(name, "--add-exports=") == 0 ||
 619            JLI_StrCCmp(name, "--add-reads=") == 0 ||
 620            JLI_StrCCmp(name, "--patch-module=") == 0;
 621 }
 622 
 623 /*
 624  * Test if the given name has a white space option.
 625  */
 626 jboolean
 627 IsWhiteSpaceOption(const char* name) {
 628     return IsModuleOption(name) ||
 629            IsLauncherOption(name);
 630 }
 631 
 632 /*
 633  * Check if it is OK to set the mode.
 634  * If the mode was previously set, and should not be changed,
 635  * a fatal error is reported.
 636  */
 637 static int
 638 checkMode(int mode, int newMode, const char *arg) {
 639     if (mode == LM_SOURCE) {
 640         JLI_ReportErrorMessage(ARG_ERROR14, arg);
 641         exit(1);
 642     }
 643     return newMode;
 644 }
 645 
 646 /*
 647  * Test if an arg identifies a source file.
 648  */
 649 jboolean
 650 IsSourceFile(const char *arg) {
 651     struct stat st;
 652     return (JLI_HasSuffix(arg, ".java") && stat(arg, &st) == 0);
 653 }
 654 
 655 /*
 656  * Checks the command line options to find which JVM type was
 657  * specified.  If no command line option was given for the JVM type,
 658  * the default type is used.  The environment variable
 659  * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also
 660  * checked as ways of specifying which JVM type to invoke.
 661  */
 662 char *
 663 CheckJvmType(int *pargc, char ***argv, jboolean speculative) {
 664     int i, argi;
 665     int argc;
 666     char **newArgv;
 667     int newArgvIdx = 0;
 668     int isVMType;
 669     int jvmidx = -1;
 670     char *jvmtype = getenv("JDK_ALTERNATE_VM");
 671 
 672     argc = *pargc;
 673 
 674     /* To make things simpler we always copy the argv array */
 675     newArgv = JLI_MemAlloc((argc + 1) * sizeof(char *));
 676 
 677     /* The program name is always present */
 678     newArgv[newArgvIdx++] = (*argv)[0];
 679 
 680     for (argi = 1; argi < argc; argi++) {
 681         char *arg = (*argv)[argi];
 682         isVMType = 0;
 683 
 684         if (IsJavaArgs()) {
 685             if (arg[0] != '-') {
 686                 newArgv[newArgvIdx++] = arg;
 687                 continue;
 688             }
 689         } else {
 690             if (IsWhiteSpaceOption(arg)) {
 691                 newArgv[newArgvIdx++] = arg;
 692                 argi++;
 693                 if (argi < argc) {
 694                     newArgv[newArgvIdx++] = (*argv)[argi];
 695                 }
 696                 continue;
 697             }
 698             if (arg[0] != '-') break;
 699         }
 700 
 701         /* Did the user pass an explicit VM type? */
 702         i = KnownVMIndex(arg);
 703         if (i >= 0) {
 704             jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */
 705             isVMType = 1;
 706             *pargc = *pargc - 1;
 707         }
 708 
 709         /* Did the user specify an "alternate" VM? */
 710         else if (JLI_StrCCmp(arg, "-XXaltjvm=") == 0 || JLI_StrCCmp(arg, "-J-XXaltjvm=") == 0) {
 711             isVMType = 1;
 712             jvmtype = arg+((arg[1]=='X')? 10 : 12);
 713             jvmidx = -1;
 714         }
 715 
 716         if (!isVMType) {
 717             newArgv[newArgvIdx++] = arg;
 718         }
 719     }
 720 
 721     /*
 722      * Finish copying the arguments if we aborted the above loop.
 723      * NOTE that if we aborted via "break" then we did NOT copy the
 724      * last argument above, and in addition argi will be less than
 725      * argc.
 726      */
 727     while (argi < argc) {
 728         newArgv[newArgvIdx++] = (*argv)[argi];
 729         argi++;
 730     }
 731 
 732     /* argv is null-terminated */
 733     newArgv[newArgvIdx] = 0;
 734 
 735     /* Copy back argv */
 736     *argv = newArgv;
 737     *pargc = newArgvIdx;
 738 
 739     /* use the default VM type if not specified (no alias processing) */
 740     if (jvmtype == NULL) {
 741       char* result = knownVMs[0].name+1;
 742       JLI_TraceLauncher("Default VM: %s\n", result);
 743       return result;
 744     }
 745 
 746     /* if using an alternate VM, no alias processing */
 747     if (jvmidx < 0)
 748       return jvmtype;
 749 
 750     /* Resolve aliases first */
 751     {
 752       int loopCount = 0;
 753       while (knownVMs[jvmidx].flag == VM_ALIASED_TO) {
 754         int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias);
 755 
 756         if (loopCount > knownVMsCount) {
 757           if (!speculative) {
 758             JLI_ReportErrorMessage(CFG_ERROR1);
 759             exit(1);
 760           } else {
 761             return "ERROR";
 762             /* break; */
 763           }
 764         }
 765 
 766         if (nextIdx < 0) {
 767           if (!speculative) {
 768             JLI_ReportErrorMessage(CFG_ERROR2, knownVMs[jvmidx].alias);
 769             exit(1);
 770           } else {
 771             return "ERROR";
 772           }
 773         }
 774         jvmidx = nextIdx;
 775         jvmtype = knownVMs[jvmidx].name+1;
 776         loopCount++;
 777       }
 778     }
 779 
 780     switch (knownVMs[jvmidx].flag) {
 781     case VM_WARN:
 782         if (!speculative) {
 783             JLI_ReportErrorMessage(CFG_WARN1, jvmtype, knownVMs[0].name + 1);
 784         }
 785         /* fall through */
 786     case VM_IGNORE:
 787         jvmtype = knownVMs[jvmidx=0].name + 1;
 788         /* fall through */
 789     case VM_KNOWN:
 790         break;
 791     case VM_ERROR:
 792         if (!speculative) {
 793             JLI_ReportErrorMessage(CFG_ERROR3, jvmtype);
 794             exit(1);
 795         } else {
 796             return "ERROR";
 797         }
 798     }
 799 
 800     return jvmtype;
 801 }
 802 
 803 /*
 804  * This method must be called before the VM is loaded, primarily
 805  * used to parse and set any VM related options or env variables.
 806  * This function is non-destructive leaving the argument list intact.
 807  */
 808 static void
 809 SetJvmEnvironment(int argc, char **argv) {
 810 
 811     static const char*  NMT_Env_Name    = "NMT_LEVEL_";
 812     int i;
 813     /* process only the launcher arguments */
 814     for (i = 0; i < argc; i++) {
 815         char *arg = argv[i];
 816         /*
 817          * Since this must be a VM flag we stop processing once we see
 818          * an argument the launcher would not have processed beyond (such
 819          * as -version or -h), or an argument that indicates the following
 820          * arguments are for the application (i.e. the main class name, or
 821          * the -jar argument).
 822          */
 823         if (i > 0) {
 824             char *prev = argv[i - 1];
 825             // skip non-dash arg preceded by class path specifiers
 826             if (*arg != '-' && IsWhiteSpaceOption(prev)) {
 827                 continue;
 828             }
 829 
 830             if (*arg != '-' || isTerminalOpt(arg)) {
 831                 return;
 832             }
 833         }
 834         /*
 835          * The following case checks for "-XX:NativeMemoryTracking=value".
 836          * If value is non null, an environmental variable set to this value
 837          * will be created to be used by the JVM.
 838          * The argument is passed to the JVM, which will check validity.
 839          * The JVM is responsible for removing the env variable.
 840          */
 841         if (JLI_StrCCmp(arg, "-XX:NativeMemoryTracking=") == 0) {
 842             int retval;
 843             // get what follows this parameter, include "="
 844             size_t pnlen = JLI_StrLen("-XX:NativeMemoryTracking=");
 845             if (JLI_StrLen(arg) > pnlen) {
 846                 char* value = arg + pnlen;
 847                 size_t pbuflen = pnlen + JLI_StrLen(value) + 10; // 10 max pid digits
 848 
 849                 /*
 850                  * ensures that malloc successful
 851                  * DONT JLI_MemFree() pbuf.  JLI_PutEnv() uses system call
 852                  *   that could store the address.
 853                  */
 854                 char * pbuf = (char*)JLI_MemAlloc(pbuflen);
 855 
 856                 JLI_Snprintf(pbuf, pbuflen, "%s%d=%s", NMT_Env_Name, JLI_GetPid(), value);
 857                 retval = JLI_PutEnv(pbuf);
 858                 if (JLI_IsTraceLauncher()) {
 859                     char* envName;
 860                     char* envBuf;
 861 
 862                     // ensures that malloc successful
 863                     envName = (char*)JLI_MemAlloc(pbuflen);
 864                     JLI_Snprintf(envName, pbuflen, "%s%d", NMT_Env_Name, JLI_GetPid());
 865 
 866                     printf("TRACER_MARKER: NativeMemoryTracking: env var is %s\n",envName);
 867                     printf("TRACER_MARKER: NativeMemoryTracking: putenv arg %s\n",pbuf);
 868                     envBuf = getenv(envName);
 869                     printf("TRACER_MARKER: NativeMemoryTracking: got value %s\n",envBuf);
 870                     free(envName);
 871                 }
 872             }
 873         }
 874     }
 875 }
 876 
 877 /* copied from HotSpot function "atomll()" */
 878 static int
 879 parse_size(const char *s, jlong *result) {
 880   jlong n = 0;
 881   int args_read = sscanf(s, JLONG_FORMAT_SPECIFIER, &n);
 882   if (args_read != 1) {
 883     return 0;
 884   }
 885   while (*s != '\0' && *s >= '0' && *s <= '9') {
 886     s++;
 887   }
 888   // 4705540: illegal if more characters are found after the first non-digit
 889   if (JLI_StrLen(s) > 1) {
 890     return 0;
 891   }
 892   switch (*s) {
 893     case 'T': case 't':
 894       *result = n * GB * KB;
 895       return 1;
 896     case 'G': case 'g':
 897       *result = n * GB;
 898       return 1;
 899     case 'M': case 'm':
 900       *result = n * MB;
 901       return 1;
 902     case 'K': case 'k':
 903       *result = n * KB;
 904       return 1;
 905     case '\0':
 906       *result = n;
 907       return 1;
 908     default:
 909       /* Create JVM with default stack and let VM handle malformed -Xss string*/
 910       return 0;
 911   }
 912 }
 913 
 914 /*
 915  * Adds a new VM option with the given name and value.
 916  */
 917 void
 918 AddOption(char *str, void *info)
 919 {
 920     /*
 921      * Expand options array if needed to accommodate at least one more
 922      * VM option.
 923      */
 924     if (numOptions >= maxOptions) {
 925         if (options == 0) {
 926             maxOptions = 4;
 927             options = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
 928         } else {
 929             JavaVMOption *tmp;
 930             maxOptions *= 2;
 931             tmp = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption));
 932             memcpy(tmp, options, numOptions * sizeof(JavaVMOption));
 933             JLI_MemFree(options);
 934             options = tmp;
 935         }
 936     }
 937     options[numOptions].optionString = str;
 938     options[numOptions++].extraInfo = info;
 939 
 940     if (JLI_StrCCmp(str, "-Xss") == 0) {
 941         jlong tmp;
 942         if (parse_size(str + 4, &tmp)) {
 943             threadStackSize = tmp;
 944             /*
 945              * Make sure the thread stack size is big enough that we won't get a stack
 946              * overflow before the JVM startup code can check to make sure the stack
 947              * is big enough.
 948              */
 949             if (threadStackSize < (jlong)STACK_SIZE_MINIMUM) {
 950                 threadStackSize = STACK_SIZE_MINIMUM;
 951             }
 952         }
 953     }
 954 
 955     if (JLI_StrCCmp(str, "-Xmx") == 0) {
 956         jlong tmp;
 957         if (parse_size(str + 4, &tmp)) {
 958             maxHeapSize = tmp;
 959         }
 960     }
 961 
 962     if (JLI_StrCCmp(str, "-Xms") == 0) {
 963         jlong tmp;
 964         if (parse_size(str + 4, &tmp)) {
 965            initialHeapSize = tmp;
 966         }
 967     }
 968 }
 969 
 970 static void
 971 SetClassPath(const char *s)
 972 {
 973     char *def;
 974     const char *orig = s;
 975     static const char format[] = "-Djava.class.path=%s";
 976     /*
 977      * usually we should not get a null pointer, but there are cases where
 978      * we might just get one, in which case we simply ignore it, and let the
 979      * caller deal with it
 980      */
 981     if (s == NULL)
 982         return;
 983     s = JLI_WildcardExpandClasspath(s);
 984     if (sizeof(format) - 2 + JLI_StrLen(s) < JLI_StrLen(s))
 985         // s is became corrupted after expanding wildcards
 986         return;
 987     def = JLI_MemAlloc(sizeof(format)
 988                        - 2 /* strlen("%s") */
 989                        + JLI_StrLen(s));
 990     sprintf(def, format, s);
 991     AddOption(def, NULL);
 992     if (s != orig)
 993         JLI_MemFree((char *) s);
 994     _have_classpath = JNI_TRUE;
 995 }
 996 
 997 static void
 998 AddLongFormOption(const char *option, const char *arg)
 999 {
1000     static const char format[] = "%s=%s";
1001     char *def;
1002     size_t def_len;
1003 
1004     def_len = JLI_StrLen(option) + 1 + JLI_StrLen(arg) + 1;
1005     def = JLI_MemAlloc(def_len);
1006     JLI_Snprintf(def, def_len, format, option, arg);
1007     AddOption(def, NULL);
1008 }
1009 
1010 static void
1011 SetMainModule(const char *s)
1012 {
1013     static const char format[] = "-Djdk.module.main=%s";
1014     char* slash = JLI_StrChr(s, '/');
1015     size_t s_len, def_len;
1016     char *def;
1017 
1018     /* value may be <module> or <module>/<mainclass> */
1019     if (slash == NULL) {
1020         s_len = JLI_StrLen(s);
1021     } else {
1022         s_len = (size_t) (slash - s);
1023     }
1024     def_len = sizeof(format)
1025                - 2 /* strlen("%s") */
1026                + s_len;
1027     def = JLI_MemAlloc(def_len);
1028     JLI_Snprintf(def, def_len, format, s);
1029     AddOption(def, NULL);
1030 }
1031 
1032 /*
1033  * The SelectVersion() routine ensures that an appropriate version of
1034  * the JRE is running.  The specification for the appropriate version
1035  * is obtained from either the manifest of a jar file (preferred) or
1036  * from command line options.
1037  * The routine also parses splash screen command line options and
1038  * passes on their values in private environment variables.
1039  */
1040 static void
1041 SelectVersion(int argc, char **argv, char **main_class)
1042 {
1043     char    *arg;
1044     char    *operand;
1045     char    *version = NULL;
1046     char    *jre = NULL;
1047     int     jarflag = 0;
1048     int     headlessflag = 0;
1049     int     restrict_search = -1;               /* -1 implies not known */
1050     manifest_info info;
1051     char    env_entry[MAXNAMELEN + 24] = ENV_ENTRY "=";
1052     char    *splash_file_name = NULL;
1053     char    *splash_jar_name = NULL;
1054     char    *env_in;
1055     int     res;
1056     jboolean has_arg;
1057 
1058     /*
1059      * If the version has already been selected, set *main_class
1060      * with the value passed through the environment (if any) and
1061      * simply return.
1062      */
1063 
1064     /*
1065      * This environmental variable can be set by mJRE capable JREs
1066      * [ 1.5 thru 1.8 ].  All other aspects of mJRE processing have been
1067      * stripped by those JREs.  This environmental variable allows 1.9+
1068      * JREs to be started by these mJRE capable JREs.
1069      * Note that mJRE directives in the jar manifest file would have been
1070      * ignored for a JRE started by another JRE...
1071      * .. skipped for JRE 1.5 and beyond.
1072      * .. not even checked for pre 1.5.
1073      */
1074     if ((env_in = getenv(ENV_ENTRY)) != NULL) {
1075         if (*env_in != '\0')
1076             *main_class = JLI_StringDup(env_in);
1077         return;
1078     }
1079 
1080     /*
1081      * Scan through the arguments for options relevant to multiple JRE
1082      * support.  Multiple JRE support existed in JRE versions 1.5 thru 1.8.
1083      *
1084      * This capability is no longer available with JRE versions 1.9 and later.
1085      * These command line options are reported as errors.
1086      */
1087 
1088     argc--;
1089     argv++;
1090     while ((arg = *argv) != 0 && *arg == '-') {
1091         has_arg = IsOptionWithArgument(argc, argv);
1092         if (JLI_StrCCmp(arg, "-version:") == 0) {
1093             JLI_ReportErrorMessage(SPC_ERROR1);
1094         } else if (JLI_StrCmp(arg, "-jre-restrict-search") == 0) {
1095             JLI_ReportErrorMessage(SPC_ERROR2);
1096         } else if (JLI_StrCmp(arg, "-jre-no-restrict-search") == 0) {
1097             JLI_ReportErrorMessage(SPC_ERROR2);
1098         } else {
1099             if (JLI_StrCmp(arg, "-jar") == 0)
1100                 jarflag = 1;
1101             if (IsWhiteSpaceOption(arg)) {
1102                 if (has_arg) {
1103                     argc--;
1104                     argv++;
1105                     arg = *argv;
1106                 }
1107             }
1108 
1109             /*
1110              * Checking for headless toolkit option in the some way as AWT does:
1111              * "true" means true and any other value means false
1112              */
1113             if (JLI_StrCmp(arg, "-Djava.awt.headless=true") == 0) {
1114                 headlessflag = 1;
1115             } else if (JLI_StrCCmp(arg, "-Djava.awt.headless=") == 0) {
1116                 headlessflag = 0;
1117             } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1118                 splash_file_name = arg+8;
1119             }
1120         }
1121         argc--;
1122         argv++;
1123     }
1124     if (argc <= 0) {    /* No operand? Possibly legit with -[full]version */
1125         operand = NULL;
1126     } else {
1127         argc--;
1128         operand = *argv++;
1129     }
1130 
1131     /*
1132      * If there is a jar file, read the manifest. If the jarfile can't be
1133      * read, the manifest can't be read from the jar file, or the manifest
1134      * is corrupt, issue the appropriate error messages and exit.
1135      *
1136      * Even if there isn't a jar file, construct a manifest_info structure
1137      * containing the command line information.  It's a convenient way to carry
1138      * this data around.
1139      */
1140     if (jarflag && operand) {
1141         if ((res = JLI_ParseManifest(operand, &info)) != 0) {
1142             if (res == -1)
1143                 JLI_ReportErrorMessage(JAR_ERROR2, operand);
1144             else
1145                 JLI_ReportErrorMessage(JAR_ERROR3, operand);
1146             exit(1);
1147         }
1148 
1149         /*
1150          * Command line splash screen option should have precedence
1151          * over the manifest, so the manifest data is used only if
1152          * splash_file_name has not been initialized above during command
1153          * line parsing
1154          */
1155         if (!headlessflag && !splash_file_name && info.splashscreen_image_file_name) {
1156             splash_file_name = info.splashscreen_image_file_name;
1157             splash_jar_name = operand;
1158         }
1159     } else {
1160         info.manifest_version = NULL;
1161         info.main_class = NULL;
1162         info.jre_version = NULL;
1163         info.jre_restrict_search = 0;
1164     }
1165 
1166     /*
1167      * Passing on splash screen info in environment variables
1168      */
1169     if (splash_file_name && !headlessflag) {
1170         char* splash_file_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_FILE_ENV_ENTRY "=")+JLI_StrLen(splash_file_name)+1);
1171         JLI_StrCpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "=");
1172         JLI_StrCat(splash_file_entry, splash_file_name);
1173         putenv(splash_file_entry);
1174     }
1175     if (splash_jar_name && !headlessflag) {
1176         char* splash_jar_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_JAR_ENV_ENTRY "=")+JLI_StrLen(splash_jar_name)+1);
1177         JLI_StrCpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "=");
1178         JLI_StrCat(splash_jar_entry, splash_jar_name);
1179         putenv(splash_jar_entry);
1180     }
1181 
1182 
1183     /*
1184      * "Valid" returns (other than unrecoverable errors) follow.  Set
1185      * main_class as a side-effect of this routine.
1186      */
1187     if (info.main_class != NULL)
1188         *main_class = JLI_StringDup(info.main_class);
1189 
1190     if (info.jre_version == NULL) {
1191         JLI_FreeManifest();
1192         return;
1193     }
1194 
1195 }
1196 
1197 /*
1198  * Test if the current argv is an option, i.e. with a leading `-`
1199  * and followed with an argument without a leading `-`.
1200  */
1201 static jboolean
1202 IsOptionWithArgument(int argc, char** argv) {
1203     char* option;
1204     char* arg;
1205 
1206     if (argc <= 1)
1207         return JNI_FALSE;
1208 
1209     option = *argv;
1210     arg = *(argv+1);
1211     return *option == '-' && *arg != '-';
1212 }
1213 
1214 /*
1215  * Gets the option, and its argument if the option has an argument.
1216  * It will update *pargc, **pargv to the next option.
1217  */
1218 static int
1219 GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue) {
1220     int argc = *pargc;
1221     char** argv = *pargv;
1222     char* arg = *argv;
1223 
1224     char* option = arg;
1225     char* value = NULL;
1226     char* equals = NULL;
1227     int kind = LAUNCHER_OPTION;
1228     jboolean has_arg = JNI_FALSE;
1229 
1230     // check if this option may be a white-space option with an argument
1231     has_arg = IsOptionWithArgument(argc, argv);
1232 
1233     argv++; --argc;
1234     if (IsLauncherOption(arg)) {
1235         if (has_arg) {
1236             value = *argv;
1237             argv++; --argc;
1238         }
1239         kind = IsLauncherMainOption(arg) ? LAUNCHER_MAIN_OPTION
1240                                          : LAUNCHER_OPTION_WITH_ARGUMENT;
1241     } else if (IsModuleOption(arg)) {
1242         kind = VM_LONG_OPTION_WITH_ARGUMENT;
1243         if (has_arg) {
1244             value = *argv;
1245             argv++; --argc;
1246         }
1247 
1248         /*
1249          * Support short form alias
1250          */
1251         if (JLI_StrCmp(arg, "-p") == 0) {
1252             option = "--module-path";
1253         }
1254 
1255     } else if (JLI_StrCCmp(arg, "--") == 0 && (equals = JLI_StrChr(arg, '=')) != NULL) {
1256         value = equals+1;
1257         if (JLI_StrCCmp(arg, "--describe-module=") == 0 ||
1258             JLI_StrCCmp(arg, "--module=") == 0 ||
1259             JLI_StrCCmp(arg, "--class-path=") == 0||
1260             JLI_StrCCmp(arg, "--source=") == 0) {
1261             kind = LAUNCHER_OPTION_WITH_ARGUMENT;
1262         } else {
1263             kind = VM_LONG_OPTION;
1264         }
1265     }
1266 
1267     *pargc = argc;
1268     *pargv = argv;
1269     *poption = option;
1270     *pvalue = value;
1271     return kind;
1272 }
1273 
1274 /*
1275  * Parses command line arguments.  Returns JNI_FALSE if launcher
1276  * should exit without starting vm, returns JNI_TRUE if vm needs
1277  * to be started to process given options.  *pret (the launcher
1278  * process return value) is set to 0 for a normal exit.
1279  */
1280 static jboolean
1281 ParseArguments(int *pargc, char ***pargv,
1282                int *pmode, char **pwhat,
1283                int *pret, const char *jrepath)
1284 {
1285     int argc = *pargc;
1286     char **argv = *pargv;
1287     int mode = LM_UNKNOWN;
1288     char *arg;
1289 
1290     *pret = 0;
1291 
1292     while ((arg = *argv) != 0 && *arg == '-') {
1293         char *option = NULL;
1294         char *value = NULL;
1295         int kind = GetOpt(&argc, &argv, &option, &value);
1296         jboolean has_arg = value != NULL && JLI_StrLen(value) > 0;
1297         jboolean has_arg_any_len = value != NULL;
1298 
1299 /*
1300  * Option to set main entry point
1301  */
1302         if (JLI_StrCmp(arg, "-jar") == 0) {
1303             ARG_CHECK(argc, ARG_ERROR2, arg);
1304             mode = checkMode(mode, LM_JAR, arg);
1305         } else if (JLI_StrCmp(arg, "--module") == 0 ||
1306                    JLI_StrCCmp(arg, "--module=") == 0 ||
1307                    JLI_StrCmp(arg, "-m") == 0) {
1308             REPORT_ERROR (has_arg, ARG_ERROR5, arg);
1309             SetMainModule(value);
1310             mode = checkMode(mode, LM_MODULE, arg);
1311             if (has_arg) {
1312                *pwhat = value;
1313                 break;
1314             }
1315         } else if (JLI_StrCmp(arg, "--source") == 0 ||
1316                    JLI_StrCCmp(arg, "--source=") == 0) {
1317             REPORT_ERROR (has_arg, ARG_ERROR13, arg);
1318             mode = LM_SOURCE;
1319             if (has_arg) {
1320                 const char *prop = "-Djdk.internal.javac.source=";
1321                 size_t size = JLI_StrLen(prop) + JLI_StrLen(value) + 1;
1322                 char *propValue = (char *)JLI_MemAlloc(size);
1323                 JLI_Snprintf(propValue, size, "%s%s", prop, value);
1324                 AddOption(propValue, NULL);
1325             }
1326         } else if (JLI_StrCmp(arg, "--class-path") == 0 ||
1327                    JLI_StrCCmp(arg, "--class-path=") == 0 ||
1328                    JLI_StrCmp(arg, "-classpath") == 0 ||
1329                    JLI_StrCmp(arg, "-cp") == 0) {
1330             REPORT_ERROR (has_arg_any_len, ARG_ERROR1, arg);
1331             SetClassPath(value);
1332             mode = LM_CLASS;
1333         } else if (JLI_StrCmp(arg, "--list-modules") == 0) {
1334             listModules = JNI_TRUE;
1335         } else if (JLI_StrCmp(arg, "--show-resolved-modules") == 0) {
1336             showResolvedModules = JNI_TRUE;
1337         } else if (JLI_StrCmp(arg, "--validate-modules") == 0) {
1338             AddOption("-Djdk.module.validation=true", NULL);
1339             validateModules = JNI_TRUE;
1340         } else if (JLI_StrCmp(arg, "--describe-module") == 0 ||
1341                    JLI_StrCCmp(arg, "--describe-module=") == 0 ||
1342                    JLI_StrCmp(arg, "-d") == 0) {
1343             REPORT_ERROR (has_arg_any_len, ARG_ERROR12, arg);
1344             describeModule = value;
1345 /*
1346  * Parse white-space options
1347  */
1348         } else if (has_arg) {
1349             if (kind == VM_LONG_OPTION) {
1350                 AddOption(option, NULL);
1351             } else if (kind == VM_LONG_OPTION_WITH_ARGUMENT) {
1352                 AddLongFormOption(option, value);
1353             }
1354 /*
1355  * Error missing argument
1356  */
1357         } else if (!has_arg && (JLI_StrCmp(arg, "--module-path") == 0 ||
1358                                 JLI_StrCmp(arg, "-p") == 0 ||
1359                                 JLI_StrCmp(arg, "--upgrade-module-path") == 0)) {
1360             REPORT_ERROR (has_arg, ARG_ERROR4, arg);
1361 
1362         } else if (!has_arg && (IsModuleOption(arg) || IsLongFormModuleOption(arg))) {
1363             REPORT_ERROR (has_arg, ARG_ERROR6, arg);
1364 /*
1365  * The following cases will cause the argument parsing to stop
1366  */
1367         } else if (JLI_StrCmp(arg, "-help") == 0 ||
1368                    JLI_StrCmp(arg, "-h") == 0 ||
1369                    JLI_StrCmp(arg, "-?") == 0) {
1370             printUsage = JNI_TRUE;
1371             return JNI_TRUE;
1372         } else if (JLI_StrCmp(arg, "--help") == 0) {
1373             printUsage = JNI_TRUE;
1374             printTo = USE_STDOUT;
1375             return JNI_TRUE;
1376         } else if (JLI_StrCmp(arg, "-version") == 0) {
1377             printVersion = JNI_TRUE;
1378             return JNI_TRUE;
1379         } else if (JLI_StrCmp(arg, "--version") == 0) {
1380             printVersion = JNI_TRUE;
1381             printTo = USE_STDOUT;
1382             return JNI_TRUE;
1383         } else if (JLI_StrCmp(arg, "-showversion") == 0) {
1384             showVersion = JNI_TRUE;
1385         } else if (JLI_StrCmp(arg, "--show-version") == 0) {
1386             showVersion = JNI_TRUE;
1387             printTo = USE_STDOUT;
1388         } else if (JLI_StrCmp(arg, "--dry-run") == 0) {
1389             dryRun = JNI_TRUE;
1390         } else if (JLI_StrCmp(arg, "-X") == 0) {
1391             printXUsage = JNI_TRUE;
1392             return JNI_TRUE;
1393         } else if (JLI_StrCmp(arg, "--help-extra") == 0) {
1394             printXUsage = JNI_TRUE;
1395             printTo = USE_STDOUT;
1396             return JNI_TRUE;
1397 /*
1398  * The following case checks for -XshowSettings OR -XshowSetting:SUBOPT.
1399  * In the latter case, any SUBOPT value not recognized will default to "all"
1400  */
1401         } else if (JLI_StrCmp(arg, "-XshowSettings") == 0 ||
1402                    JLI_StrCCmp(arg, "-XshowSettings:") == 0) {
1403             showSettings = arg;
1404         } else if (JLI_StrCmp(arg, "-Xdiag") == 0) {
1405             AddOption("-Dsun.java.launcher.diag=true", NULL);
1406         } else if (JLI_StrCmp(arg, "--show-module-resolution") == 0) {
1407             AddOption("-Djdk.module.showModuleResolution=true", NULL);
1408 /*
1409  * The following case provide backward compatibility with old-style
1410  * command line options.
1411  */
1412         } else if (JLI_StrCmp(arg, "-fullversion") == 0) {
1413             JLI_ReportMessage("%s full version \"%s\"", _launcher_name, GetFullVersion());
1414             return JNI_FALSE;
1415         } else if (JLI_StrCmp(arg, "--full-version") == 0) {
1416             JLI_ShowMessage("%s %s", _launcher_name, GetFullVersion());
1417             return JNI_FALSE;
1418         } else if (JLI_StrCmp(arg, "-verbosegc") == 0) {
1419             AddOption("-verbose:gc", NULL);
1420         } else if (JLI_StrCmp(arg, "-t") == 0) {
1421             AddOption("-Xt", NULL);
1422         } else if (JLI_StrCmp(arg, "-tm") == 0) {
1423             AddOption("-Xtm", NULL);
1424         } else if (JLI_StrCmp(arg, "-debug") == 0) {
1425             AddOption("-Xdebug", NULL);
1426         } else if (JLI_StrCmp(arg, "-noclassgc") == 0) {
1427             AddOption("-Xnoclassgc", NULL);
1428         } else if (JLI_StrCmp(arg, "-Xfuture") == 0) {
1429             AddOption("-Xverify:all", NULL);
1430         } else if (JLI_StrCmp(arg, "-verify") == 0) {
1431             AddOption("-Xverify:all", NULL);
1432         } else if (JLI_StrCmp(arg, "-verifyremote") == 0) {
1433             AddOption("-Xverify:remote", NULL);
1434         } else if (JLI_StrCmp(arg, "-noverify") == 0) {
1435             AddOption("-Xverify:none", NULL);
1436         } else if (JLI_StrCCmp(arg, "-ss") == 0 ||
1437                    JLI_StrCCmp(arg, "-oss") == 0 ||
1438                    JLI_StrCCmp(arg, "-ms") == 0 ||
1439                    JLI_StrCCmp(arg, "-mx") == 0) {
1440             char *tmp = JLI_MemAlloc(JLI_StrLen(arg) + 6);
1441             sprintf(tmp, "-X%s", arg + 1); /* skip '-' */
1442             AddOption(tmp, NULL);
1443         } else if (JLI_StrCmp(arg, "-checksource") == 0 ||
1444                    JLI_StrCmp(arg, "-cs") == 0 ||
1445                    JLI_StrCmp(arg, "-noasyncgc") == 0) {
1446             /* No longer supported */
1447             JLI_ReportErrorMessage(ARG_WARN, arg);
1448         } else if (JLI_StrCCmp(arg, "-splash:") == 0) {
1449             ; /* Ignore machine independent options already handled */
1450         } else if (ProcessPlatformOption(arg)) {
1451             ; /* Processing of platform dependent options */
1452         } else {
1453             /* java.class.path set on the command line */
1454             if (JLI_StrCCmp(arg, "-Djava.class.path=") == 0) {
1455                 _have_classpath = JNI_TRUE;
1456             }
1457             AddOption(arg, NULL);
1458         }
1459     }
1460 
1461     if (*pwhat == NULL && --argc >= 0) {
1462         *pwhat = *argv++;
1463     }
1464 
1465     if (*pwhat == NULL) {
1466         /* LM_UNKNOWN okay for options that exit */
1467         if (!listModules && !describeModule && !validateModules) {
1468             *pret = 1;
1469         }
1470     } else if (mode == LM_UNKNOWN) {
1471         /* default to LM_CLASS if -m, -jar and -cp options are
1472          * not specified */
1473         if (!_have_classpath) {
1474             SetClassPath(".");
1475         }
1476         mode = IsSourceFile(arg) ? LM_SOURCE : LM_CLASS;
1477     } else if (mode == LM_CLASS && IsSourceFile(arg)) {
1478         /* override LM_CLASS mode if given a source file */
1479         mode = LM_SOURCE;
1480     }
1481 
1482     if (mode == LM_SOURCE) {
1483         AddOption("--add-modules=ALL-DEFAULT", NULL);
1484         *pwhat = SOURCE_LAUNCHER_MAIN_ENTRY;
1485         // adjust (argc, argv) so that the name of the source file
1486         // is included in the args passed to the source launcher
1487         // main entry class
1488         *pargc = argc + 1;
1489         *pargv = argv - 1;
1490     } else {
1491         if (argc >= 0) {
1492             *pargc = argc;
1493             *pargv = argv;
1494         }
1495     }
1496 
1497     *pmode = mode;
1498 
1499     return JNI_TRUE;
1500 }
1501 
1502 /*
1503  * Initializes the Java Virtual Machine. Also frees options array when
1504  * finished.
1505  */
1506 static jboolean
1507 InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn)
1508 {
1509     JavaVMInitArgs args;
1510     jint r;
1511 
1512     memset(&args, 0, sizeof(args));
1513     args.version  = JNI_VERSION_1_2;
1514     args.nOptions = numOptions;
1515     args.options  = options;
1516     args.ignoreUnrecognized = JNI_FALSE;
1517 
1518     if (JLI_IsTraceLauncher()) {
1519         int i = 0;
1520         printf("JavaVM args:\n    ");
1521         printf("version 0x%08lx, ", (long)args.version);
1522         printf("ignoreUnrecognized is %s, ",
1523                args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE");
1524         printf("nOptions is %ld\n", (long)args.nOptions);
1525         for (i = 0; i < numOptions; i++)
1526             printf("    option[%2d] = '%s'\n",
1527                    i, args.options[i].optionString);
1528     }
1529 
1530     r = ifn->CreateJavaVM(pvm, (void **)penv, &args);
1531     JLI_MemFree(options);
1532     return r == JNI_OK;
1533 }
1534 
1535 static jclass helperClass = NULL;
1536 
1537 jclass
1538 GetLauncherHelperClass(JNIEnv *env)
1539 {
1540     if (helperClass == NULL) {
1541         NULL_CHECK0(helperClass = FindBootStrapClass(env,
1542                 "sun/launcher/LauncherHelper"));
1543     }
1544     return helperClass;
1545 }
1546 
1547 static jmethodID makePlatformStringMID = NULL;
1548 /*
1549  * Returns a new Java string object for the specified platform string.
1550  */
1551 static jstring
1552 NewPlatformString(JNIEnv *env, char *s)
1553 {
1554     int len = (int)JLI_StrLen(s);
1555     jbyteArray ary;
1556     jclass cls = GetLauncherHelperClass(env);
1557     NULL_CHECK0(cls);
1558     if (s == NULL)
1559         return 0;
1560 
1561     ary = (*env)->NewByteArray(env, len);
1562     if (ary != 0) {
1563         jstring str = 0;
1564         (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s);
1565         if (!(*env)->ExceptionOccurred(env)) {
1566             if (makePlatformStringMID == NULL) {
1567                 NULL_CHECK0(makePlatformStringMID = (*env)->GetStaticMethodID(env,
1568                         cls, "makePlatformString", "(Z[B)Ljava/lang/String;"));
1569             }
1570             str = (*env)->CallStaticObjectMethod(env, cls,
1571                     makePlatformStringMID, USE_STDERR, ary);
1572             CHECK_EXCEPTION_RETURN_VALUE(0);
1573             (*env)->DeleteLocalRef(env, ary);
1574             return str;
1575         }
1576     }
1577     return 0;
1578 }
1579 
1580 /*
1581  * Returns a new array of Java string objects for the specified
1582  * array of platform strings.
1583  */
1584 jobjectArray
1585 NewPlatformStringArray(JNIEnv *env, char **strv, int strc)
1586 {
1587     jarray cls;
1588     jarray ary;
1589     int i;
1590 
1591     NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String"));
1592     NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0));
1593     CHECK_EXCEPTION_RETURN_VALUE(0);
1594     for (i = 0; i < strc; i++) {
1595         jstring str = NewPlatformString(env, *strv++);
1596         NULL_CHECK0(str);
1597         (*env)->SetObjectArrayElement(env, ary, i, str);
1598         (*env)->DeleteLocalRef(env, str);
1599     }
1600     return ary;
1601 }
1602 
1603 /*
1604  * Loads a class and verifies that the main class is present and it is ok to
1605  * call it for more details refer to the java implementation.
1606  */
1607 static jclass
1608 LoadMainClass(JNIEnv *env, int mode, char *name)
1609 {
1610     jmethodID mid;
1611     jstring str;
1612     jobject result;
1613     jlong start, end;
1614     jclass cls = GetLauncherHelperClass(env);
1615     NULL_CHECK0(cls);
1616     if (JLI_IsTraceLauncher()) {
1617         start = CounterGet();
1618     }
1619     NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1620                 "checkAndLoadMain",
1621                 "(ZILjava/lang/String;)Ljava/lang/Class;"));
1622 
1623     NULL_CHECK0(str = NewPlatformString(env, name));
1624     NULL_CHECK0(result = (*env)->CallStaticObjectMethod(env, cls, mid,
1625                                                         USE_STDERR, mode, str));
1626 
1627     if (JLI_IsTraceLauncher()) {
1628         end   = CounterGet();
1629         printf("%ld micro seconds to load main class\n",
1630                (long)(jint)Counter2Micros(end-start));
1631         printf("----%s----\n", JLDEBUG_ENV_ENTRY);
1632     }
1633 
1634     return (jclass)result;
1635 }
1636 
1637 static jclass
1638 GetApplicationClass(JNIEnv *env)
1639 {
1640     jmethodID mid;
1641     jclass appClass;
1642     jclass cls = GetLauncherHelperClass(env);
1643     NULL_CHECK0(cls);
1644     NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls,
1645                 "getApplicationClass",
1646                 "()Ljava/lang/Class;"));
1647 
1648     appClass = (*env)->CallStaticObjectMethod(env, cls, mid);
1649     CHECK_EXCEPTION_RETURN_VALUE(0);
1650     return appClass;
1651 }
1652 
1653 static char* expandWildcardOnLongOpt(char* arg) {
1654     char *p, *value;
1655     size_t optLen, valueLen;
1656     p = JLI_StrChr(arg, '=');
1657 
1658     if (p == NULL || p[1] == '\0') {
1659         JLI_ReportErrorMessage(ARG_ERROR1, arg);
1660         exit(1);
1661     }
1662     p++;
1663     value = (char *) JLI_WildcardExpandClasspath(p);
1664     if (p == value) {
1665         // no wildcard
1666         return arg;
1667     }
1668 
1669     optLen = p - arg;
1670     valueLen = JLI_StrLen(value);
1671     p = JLI_MemAlloc(optLen + valueLen + 1);
1672     memcpy(p, arg, optLen);
1673     memcpy(p + optLen, value, valueLen);
1674     p[optLen + valueLen] = '\0';
1675     return p;
1676 }
1677 
1678 /*
1679  * For tools, convert command line args thus:
1680  *   javac -cp foo:foo/"*" -J-ms32m ...
1681  *   java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ...
1682  *
1683  * Takes 4 parameters, and returns the populated arguments
1684  */
1685 static void
1686 TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv)
1687 {
1688     int argc = *pargc;
1689     char **argv = *pargv;
1690     int nargc = argc + jargc;
1691     char **nargv = JLI_MemAlloc((nargc + 1) * sizeof(char *));
1692     int i;
1693 
1694     *pargc = nargc;
1695     *pargv = nargv;
1696 
1697     /* Copy the VM arguments (i.e. prefixed with -J) */
1698     for (i = 0; i < jargc; i++) {
1699         const char *arg = jargv[i];
1700         if (arg[0] == '-' && arg[1] == 'J') {
1701             *nargv++ = ((arg + 2) == NULL) ? NULL : JLI_StringDup(arg + 2);
1702         }
1703     }
1704 
1705     for (i = 0; i < argc; i++) {
1706         char *arg = argv[i];
1707         if (arg[0] == '-' && arg[1] == 'J') {
1708             if (arg[2] == '\0') {
1709                 JLI_ReportErrorMessage(ARG_ERROR3);
1710                 exit(1);
1711             }
1712             *nargv++ = arg + 2;
1713         }
1714     }
1715 
1716     /* Copy the rest of the arguments */
1717     for (i = 0; i < jargc ; i++) {
1718         const char *arg = jargv[i];
1719         if (arg[0] != '-' || arg[1] != 'J') {
1720             *nargv++ = (arg == NULL) ? NULL : JLI_StringDup(arg);
1721         }
1722     }
1723     for (i = 0; i < argc; i++) {
1724         char *arg = argv[i];
1725         if (arg[0] == '-') {
1726             if (arg[1] == 'J')
1727                 continue;
1728             if (IsWildCardEnabled()) {
1729                 if (IsClassPathOption(arg) && i < argc - 1) {
1730                     *nargv++ = arg;
1731                     *nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]);
1732                     i++;
1733                     continue;
1734                 }
1735                 if (JLI_StrCCmp(arg, "--class-path=") == 0) {
1736                     *nargv++ = expandWildcardOnLongOpt(arg);
1737                     continue;
1738                 }
1739             }
1740         }
1741         *nargv++ = arg;
1742     }
1743     *nargv = 0;
1744 }
1745 
1746 /*
1747  * For our tools, we try to add 3 VM options:
1748  *      -Denv.class.path=<envcp>
1749  *      -Dapplication.home=<apphome>
1750  *      -Djava.class.path=<appcp>
1751  * <envcp>   is the user's setting of CLASSPATH -- for instance the user
1752  *           tells javac where to find binary classes through this environment
1753  *           variable.  Notice that users will be able to compile against our
1754  *           tools classes (sun.tools.javac.Main) only if they explicitly add
1755  *           tools.jar to CLASSPATH.
1756  * <apphome> is the directory where the application is installed.
1757  * <appcp>   is the classpath to where our apps' classfiles are.
1758  */
1759 static jboolean
1760 AddApplicationOptions(int cpathc, const char **cpathv)
1761 {
1762     char *envcp, *appcp, *apphome;
1763     char home[MAXPATHLEN]; /* application home */
1764     char separator[] = { PATH_SEPARATOR, '\0' };
1765     int size, i;
1766 
1767     {
1768         const char *s = getenv("CLASSPATH");
1769         if (s) {
1770             s = (char *) JLI_WildcardExpandClasspath(s);
1771             /* 40 for -Denv.class.path= */
1772             if (JLI_StrLen(s) + 40 > JLI_StrLen(s)) { // Safeguard from overflow
1773                 envcp = (char *)JLI_MemAlloc(JLI_StrLen(s) + 40);
1774                 sprintf(envcp, "-Denv.class.path=%s", s);
1775                 AddOption(envcp, NULL);
1776             }
1777         }
1778     }
1779 
1780     if (!GetApplicationHome(home, sizeof(home))) {
1781         JLI_ReportErrorMessage(CFG_ERROR5);
1782         return JNI_FALSE;
1783     }
1784 
1785     /* 40 for '-Dapplication.home=' */
1786     apphome = (char *)JLI_MemAlloc(JLI_StrLen(home) + 40);
1787     sprintf(apphome, "-Dapplication.home=%s", home);
1788     AddOption(apphome, NULL);
1789 
1790     /* How big is the application's classpath? */
1791     if (cpathc > 0) {
1792         size = 40;                                 /* 40: "-Djava.class.path=" */
1793         for (i = 0; i < cpathc; i++) {
1794             size += (int)JLI_StrLen(home) + (int)JLI_StrLen(cpathv[i]) + 1; /* 1: separator */
1795         }
1796         appcp = (char *)JLI_MemAlloc(size + 1);
1797         JLI_StrCpy(appcp, "-Djava.class.path=");
1798         for (i = 0; i < cpathc; i++) {
1799             JLI_StrCat(appcp, home);                        /* c:\program files\myapp */
1800             JLI_StrCat(appcp, cpathv[i]);           /* \lib\myapp.jar         */
1801             JLI_StrCat(appcp, separator);           /* ;                      */
1802         }
1803         appcp[JLI_StrLen(appcp)-1] = '\0';  /* remove trailing path separator */
1804         AddOption(appcp, NULL);
1805     }
1806     return JNI_TRUE;
1807 }
1808 
1809 /*
1810  * inject the -Dsun.java.command pseudo property into the args structure
1811  * this pseudo property is used in the HotSpot VM to expose the
1812  * Java class name and arguments to the main method to the VM. The
1813  * HotSpot VM uses this pseudo property to store the Java class name
1814  * (or jar file name) and the arguments to the class's main method
1815  * to the instrumentation memory region. The sun.java.command pseudo
1816  * property is not exported by HotSpot to the Java layer.
1817  */
1818 void
1819 SetJavaCommandLineProp(char *what, int argc, char **argv)
1820 {
1821 
1822     int i = 0;
1823     size_t len = 0;
1824     char* javaCommand = NULL;
1825     char* dashDstr = "-Dsun.java.command=";
1826 
1827     if (what == NULL) {
1828         /* unexpected, one of these should be set. just return without
1829          * setting the property
1830          */
1831         return;
1832     }
1833 
1834     /* determine the amount of memory to allocate assuming
1835      * the individual components will be space separated
1836      */
1837     len = JLI_StrLen(what);
1838     for (i = 0; i < argc; i++) {
1839         len += JLI_StrLen(argv[i]) + 1;
1840     }
1841 
1842     /* allocate the memory */
1843     javaCommand = (char*) JLI_MemAlloc(len + JLI_StrLen(dashDstr) + 1);
1844 
1845     /* build the -D string */
1846     *javaCommand = '\0';
1847     JLI_StrCat(javaCommand, dashDstr);
1848     JLI_StrCat(javaCommand, what);
1849 
1850     for (i = 0; i < argc; i++) {
1851         /* the components of the string are space separated. In
1852          * the case of embedded white space, the relationship of
1853          * the white space separated components to their true
1854          * positional arguments will be ambiguous. This issue may
1855          * be addressed in a future release.
1856          */
1857         JLI_StrCat(javaCommand, " ");
1858         JLI_StrCat(javaCommand, argv[i]);
1859     }
1860 
1861     AddOption(javaCommand, NULL);
1862 }
1863 
1864 /*
1865  * JVM would like to know if it's created by a standard Sun launcher, or by
1866  * user native application, the following property indicates the former.
1867  */
1868 void
1869 SetJavaLauncherProp() {
1870   AddOption("-Dsun.java.launcher=SUN_STANDARD", NULL);
1871 }
1872 
1873 /*
1874  * Prints the version information from the java.version and other properties.
1875  */
1876 static void
1877 PrintJavaVersion(JNIEnv *env, jboolean extraLF)
1878 {
1879     jclass ver;
1880     jmethodID print;
1881 
1882     NULL_CHECK(ver = FindBootStrapClass(env, "java/lang/VersionProps"));
1883     NULL_CHECK(print = (*env)->GetStaticMethodID(env,
1884                                                  ver,
1885                                                  (extraLF == JNI_TRUE) ? "println" : "print",
1886                                                  "(Z)V"
1887                                                  )
1888               );
1889 
1890     (*env)->CallStaticVoidMethod(env, ver, print, printTo);
1891 }
1892 
1893 /*
1894  * Prints all the Java settings, see the java implementation for more details.
1895  */
1896 static void
1897 ShowSettings(JNIEnv *env, char *optString)
1898 {
1899     jmethodID showSettingsID;
1900     jstring joptString;
1901     jclass cls = GetLauncherHelperClass(env);
1902     NULL_CHECK(cls);
1903     NULL_CHECK(showSettingsID = (*env)->GetStaticMethodID(env, cls,
1904             "showSettings", "(ZLjava/lang/String;JJJ)V"));
1905     NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1906     (*env)->CallStaticVoidMethod(env, cls, showSettingsID,
1907                                  USE_STDERR,
1908                                  joptString,
1909                                  (jlong)initialHeapSize,
1910                                  (jlong)maxHeapSize,
1911                                  (jlong)threadStackSize);
1912 }
1913 
1914 /**
1915  * Show resolved modules
1916  */
1917 static void
1918 ShowResolvedModules(JNIEnv *env)
1919 {
1920     jmethodID showResolvedModulesID;
1921     jclass cls = GetLauncherHelperClass(env);
1922     NULL_CHECK(cls);
1923     NULL_CHECK(showResolvedModulesID = (*env)->GetStaticMethodID(env, cls,
1924             "showResolvedModules", "()V"));
1925     (*env)->CallStaticVoidMethod(env, cls, showResolvedModulesID);
1926 }
1927 
1928 /**
1929  * List observable modules
1930  */
1931 static void
1932 ListModules(JNIEnv *env)
1933 {
1934     jmethodID listModulesID;
1935     jclass cls = GetLauncherHelperClass(env);
1936     NULL_CHECK(cls);
1937     NULL_CHECK(listModulesID = (*env)->GetStaticMethodID(env, cls,
1938             "listModules", "()V"));
1939     (*env)->CallStaticVoidMethod(env, cls, listModulesID);
1940 }
1941 
1942 /**
1943  * Describe a module
1944  */
1945 static void
1946 DescribeModule(JNIEnv *env, char *optString)
1947 {
1948     jmethodID describeModuleID;
1949     jstring joptString = NULL;
1950     jclass cls = GetLauncherHelperClass(env);
1951     NULL_CHECK(cls);
1952     NULL_CHECK(describeModuleID = (*env)->GetStaticMethodID(env, cls,
1953             "describeModule", "(Ljava/lang/String;)V"));
1954     NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString));
1955     (*env)->CallStaticVoidMethod(env, cls, describeModuleID, joptString);
1956 }
1957 
1958 /**
1959  * Validate modules
1960  */
1961 static jboolean
1962 ValidateModules(JNIEnv *env)
1963 {
1964     jmethodID validateModulesID;
1965     jclass cls = GetLauncherHelperClass(env);
1966     NULL_CHECK_RETURN_VALUE(cls, JNI_FALSE);
1967     validateModulesID = (*env)->GetStaticMethodID(env, cls, "validateModules", "()Z");
1968     NULL_CHECK_RETURN_VALUE(cls, JNI_FALSE);
1969     return (*env)->CallStaticBooleanMethod(env, cls, validateModulesID);
1970 }
1971 
1972 /*
1973  * Prints default usage or the Xusage message, see sun.launcher.LauncherHelper.java
1974  */
1975 static void
1976 PrintUsage(JNIEnv* env, jboolean doXUsage)
1977 {
1978   jmethodID initHelp, vmSelect, vmSynonym, printHelp, printXUsageMessage;
1979   jstring jprogname, vm1, vm2;
1980   int i;
1981   jclass cls = GetLauncherHelperClass(env);
1982   NULL_CHECK(cls);
1983   if (doXUsage) {
1984     NULL_CHECK(printXUsageMessage = (*env)->GetStaticMethodID(env, cls,
1985                                         "printXUsageMessage", "(Z)V"));
1986     (*env)->CallStaticVoidMethod(env, cls, printXUsageMessage, printTo);
1987   } else {
1988     NULL_CHECK(initHelp = (*env)->GetStaticMethodID(env, cls,
1989                                         "initHelpMessage", "(Ljava/lang/String;)V"));
1990 
1991     NULL_CHECK(vmSelect = (*env)->GetStaticMethodID(env, cls, "appendVmSelectMessage",
1992                                         "(Ljava/lang/String;Ljava/lang/String;)V"));
1993 
1994     NULL_CHECK(vmSynonym = (*env)->GetStaticMethodID(env, cls,
1995                                         "appendVmSynonymMessage",
1996                                         "(Ljava/lang/String;Ljava/lang/String;)V"));
1997 
1998     NULL_CHECK(printHelp = (*env)->GetStaticMethodID(env, cls,
1999                                         "printHelpMessage", "(Z)V"));
2000 
2001     NULL_CHECK(jprogname = (*env)->NewStringUTF(env, _program_name));
2002 
2003     /* Initialize the usage message with the usual preamble */
2004     (*env)->CallStaticVoidMethod(env, cls, initHelp, jprogname);
2005     CHECK_EXCEPTION_RETURN();
2006 
2007 
2008     /* Assemble the other variant part of the usage */
2009     for (i=1; i<knownVMsCount; i++) {
2010       if (knownVMs[i].flag == VM_KNOWN) {
2011         NULL_CHECK(vm1 =  (*env)->NewStringUTF(env, knownVMs[i].name));
2012         NULL_CHECK(vm2 =  (*env)->NewStringUTF(env, knownVMs[i].name+1));
2013         (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2);
2014         CHECK_EXCEPTION_RETURN();
2015       }
2016     }
2017     for (i=1; i<knownVMsCount; i++) {
2018       if (knownVMs[i].flag == VM_ALIASED_TO) {
2019         NULL_CHECK(vm1 =  (*env)->NewStringUTF(env, knownVMs[i].name));
2020         NULL_CHECK(vm2 =  (*env)->NewStringUTF(env, knownVMs[i].alias+1));
2021         (*env)->CallStaticVoidMethod(env, cls, vmSynonym, vm1, vm2);
2022         CHECK_EXCEPTION_RETURN();
2023       }
2024     }
2025 
2026     /* Complete the usage message and print to stderr*/
2027     (*env)->CallStaticVoidMethod(env, cls, printHelp, printTo);
2028   }
2029   return;
2030 }
2031 
2032 /*
2033  * Read the jvm.cfg file and fill the knownJVMs[] array.
2034  *
2035  * The functionality of the jvm.cfg file is subject to change without
2036  * notice and the mechanism will be removed in the future.
2037  *
2038  * The lexical structure of the jvm.cfg file is as follows:
2039  *
2040  *     jvmcfg         :=  { vmLine }
2041  *     vmLine         :=  knownLine
2042  *                    |   aliasLine
2043  *                    |   warnLine
2044  *                    |   ignoreLine
2045  *                    |   errorLine
2046  *                    |   predicateLine
2047  *                    |   commentLine
2048  *     knownLine      :=  flag  "KNOWN"                  EOL
2049  *     warnLine       :=  flag  "WARN"                   EOL
2050  *     ignoreLine     :=  flag  "IGNORE"                 EOL
2051  *     errorLine      :=  flag  "ERROR"                  EOL
2052  *     aliasLine      :=  flag  "ALIASED_TO"       flag  EOL
2053  *     predicateLine  :=  flag  "IF_SERVER_CLASS"  flag  EOL
2054  *     commentLine    :=  "#" text                       EOL
2055  *     flag           :=  "-" identifier
2056  *
2057  * The semantics are that when someone specifies a flag on the command line:
2058  * - if the flag appears on a knownLine, then the identifier is used as
2059  *   the name of the directory holding the JVM library (the name of the JVM).
2060  * - if the flag appears as the first flag on an aliasLine, the identifier
2061  *   of the second flag is used as the name of the JVM.
2062  * - if the flag appears on a warnLine, the identifier is used as the
2063  *   name of the JVM, but a warning is generated.
2064  * - if the flag appears on an ignoreLine, the identifier is recognized as the
2065  *   name of a JVM, but the identifier is ignored and the default vm used
2066  * - if the flag appears on an errorLine, an error is generated.
2067  * - if the flag appears as the first flag on a predicateLine, and
2068  *   the machine on which you are running passes the predicate indicated,
2069  *   then the identifier of the second flag is used as the name of the JVM,
2070  *   otherwise the identifier of the first flag is used as the name of the JVM.
2071  * If no flag is given on the command line, the first vmLine of the jvm.cfg
2072  * file determines the name of the JVM.
2073  * PredicateLines are only interpreted on first vmLine of a jvm.cfg file,
2074  * since they only make sense if someone hasn't specified the name of the
2075  * JVM on the command line.
2076  *
2077  * The intent of the jvm.cfg file is to allow several JVM libraries to
2078  * be installed in different subdirectories of a single JRE installation,
2079  * for space-savings and convenience in testing.
2080  * The intent is explicitly not to provide a full aliasing or predicate
2081  * mechanism.
2082  */
2083 jint
2084 ReadKnownVMs(const char *jvmCfgName, jboolean speculative)
2085 {
2086     FILE *jvmCfg;
2087     char line[MAXPATHLEN+20];
2088     int cnt = 0;
2089     int lineno = 0;
2090     jlong start, end;
2091     int vmType;
2092     char *tmpPtr;
2093     char *altVMName = NULL;
2094     char *serverClassVMName = NULL;
2095     static char *whiteSpace = " \t";
2096     if (JLI_IsTraceLauncher()) {
2097         start = CounterGet();
2098     }
2099 
2100     jvmCfg = fopen(jvmCfgName, "r");
2101     if (jvmCfg == NULL) {
2102       if (!speculative) {
2103         JLI_ReportErrorMessage(CFG_ERROR6, jvmCfgName);
2104         exit(1);
2105       } else {
2106         return -1;
2107       }
2108     }
2109     while (fgets(line, sizeof(line), jvmCfg) != NULL) {
2110         vmType = VM_UNKNOWN;
2111         lineno++;
2112         if (line[0] == '#')
2113             continue;
2114         if (line[0] != '-') {
2115             JLI_ReportErrorMessage(CFG_WARN2, lineno, jvmCfgName);
2116         }
2117         if (cnt >= knownVMsLimit) {
2118             GrowKnownVMs(cnt);
2119         }
2120         line[JLI_StrLen(line)-1] = '\0'; /* remove trailing newline */
2121         tmpPtr = line + JLI_StrCSpn(line, whiteSpace);
2122         if (*tmpPtr == 0) {
2123             JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
2124         } else {
2125             /* Null-terminate this string for JLI_StringDup below */
2126             *tmpPtr++ = 0;
2127             tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
2128             if (*tmpPtr == 0) {
2129                 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
2130             } else {
2131                 if (!JLI_StrCCmp(tmpPtr, "KNOWN")) {
2132                     vmType = VM_KNOWN;
2133                 } else if (!JLI_StrCCmp(tmpPtr, "ALIASED_TO")) {
2134                     tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2135                     if (*tmpPtr != 0) {
2136                         tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace);
2137                     }
2138                     if (*tmpPtr == 0) {
2139                         JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName);
2140                     } else {
2141                         /* Null terminate altVMName */
2142                         altVMName = tmpPtr;
2143                         tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace);
2144                         *tmpPtr = 0;
2145                         vmType = VM_ALIASED_TO;
2146                     }
2147                 } else if (!JLI_StrCCmp(tmpPtr, "WARN")) {
2148                     vmType = VM_WARN;
2149                 } else if (!JLI_StrCCmp(tmpPtr, "IGNORE")) {
2150                     vmType = VM_IGNORE;
2151                 } else if (!JLI_StrCCmp(tmpPtr, "ERROR")) {
2152                     vmType = VM_ERROR;
2153                 } else if (!JLI_StrCCmp(tmpPtr, "IF_SERVER_CLASS")) {
2154                     /* ignored */
2155                 } else {
2156                     JLI_ReportErrorMessage(CFG_WARN5, lineno, &jvmCfgName[0]);
2157                     vmType = VM_KNOWN;
2158                 }
2159             }
2160         }
2161 
2162         JLI_TraceLauncher("jvm.cfg[%d] = ->%s<-\n", cnt, line);
2163         if (vmType != VM_UNKNOWN) {
2164             knownVMs[cnt].name = JLI_StringDup(line);
2165             knownVMs[cnt].flag = vmType;
2166             switch (vmType) {
2167             default:
2168                 break;
2169             case VM_ALIASED_TO:
2170                 knownVMs[cnt].alias = JLI_StringDup(altVMName);
2171                 JLI_TraceLauncher("    name: %s  vmType: %s  alias: %s\n",
2172                    knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias);
2173                 break;
2174             }
2175             cnt++;
2176         }
2177     }
2178     fclose(jvmCfg);
2179     knownVMsCount = cnt;
2180 
2181     if (JLI_IsTraceLauncher()) {
2182         end   = CounterGet();
2183         printf("%ld micro seconds to parse jvm.cfg\n",
2184                (long)(jint)Counter2Micros(end-start));
2185     }
2186 
2187     return cnt;
2188 }
2189 
2190 
2191 static void
2192 GrowKnownVMs(int minimum)
2193 {
2194     struct vmdesc* newKnownVMs;
2195     int newMax;
2196 
2197     newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit));
2198     if (newMax <= minimum) {
2199         newMax = minimum;
2200     }
2201     newKnownVMs = (struct vmdesc*) JLI_MemAlloc(newMax * sizeof(struct vmdesc));
2202     if (knownVMs != NULL) {
2203         memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc));
2204     }
2205     JLI_MemFree(knownVMs);
2206     knownVMs = newKnownVMs;
2207     knownVMsLimit = newMax;
2208 }
2209 
2210 
2211 /* Returns index of VM or -1 if not found */
2212 static int
2213 KnownVMIndex(const char* name)
2214 {
2215     int i;
2216     if (JLI_StrCCmp(name, "-J") == 0) name += 2;
2217     for (i = 0; i < knownVMsCount; i++) {
2218         if (!JLI_StrCmp(name, knownVMs[i].name)) {
2219             return i;
2220         }
2221     }
2222     return -1;
2223 }
2224 
2225 static void
2226 FreeKnownVMs()
2227 {
2228     int i;
2229     for (i = 0; i < knownVMsCount; i++) {
2230         JLI_MemFree(knownVMs[i].name);
2231         knownVMs[i].name = NULL;
2232     }
2233     JLI_MemFree(knownVMs);
2234 }
2235 
2236 /*
2237  * Displays the splash screen according to the jar file name
2238  * and image file names stored in environment variables
2239  */
2240 void
2241 ShowSplashScreen()
2242 {
2243     const char *jar_name = getenv(SPLASH_JAR_ENV_ENTRY);
2244     const char *file_name = getenv(SPLASH_FILE_ENV_ENTRY);
2245     int data_size;
2246     void *image_data = NULL;
2247     float scale_factor = 1;
2248     char *scaled_splash_name = NULL;
2249     jboolean isImageScaled = JNI_FALSE;
2250     size_t maxScaledImgNameLength = 0;
2251     if (file_name == NULL){
2252         return;
2253     }
2254     maxScaledImgNameLength = DoSplashGetScaledImgNameMaxPstfixLen(file_name);
2255 
2256     scaled_splash_name = JLI_MemAlloc(
2257                             maxScaledImgNameLength * sizeof(char));
2258     isImageScaled = DoSplashGetScaledImageName(jar_name, file_name,
2259                             &scale_factor,
2260                             scaled_splash_name, maxScaledImgNameLength);
2261     if (jar_name) {
2262 
2263         if (isImageScaled) {
2264             image_data = JLI_JarUnpackFile(
2265                     jar_name, scaled_splash_name, &data_size);
2266         }
2267 
2268         if (!image_data) {
2269             scale_factor = 1;
2270             image_data = JLI_JarUnpackFile(
2271                             jar_name, file_name, &data_size);
2272         }
2273         if (image_data) {
2274             DoSplashInit();
2275             DoSplashSetScaleFactor(scale_factor);
2276             DoSplashLoadMemory(image_data, data_size);
2277             JLI_MemFree(image_data);
2278         }
2279     } else {
2280         DoSplashInit();
2281         if (isImageScaled) {
2282             DoSplashSetScaleFactor(scale_factor);
2283             DoSplashLoadFile(scaled_splash_name);
2284         } else {
2285             DoSplashLoadFile(file_name);
2286         }
2287     }
2288     JLI_MemFree(scaled_splash_name);
2289 
2290     DoSplashSetFileJarName(file_name, jar_name);
2291 
2292     /*
2293      * Done with all command line processing and potential re-execs so
2294      * clean up the environment.
2295      */
2296     (void)UnsetEnv(ENV_ENTRY);
2297     (void)UnsetEnv(SPLASH_FILE_ENV_ENTRY);
2298     (void)UnsetEnv(SPLASH_JAR_ENV_ENTRY);
2299 
2300     JLI_MemFree(splash_jar_entry);
2301     JLI_MemFree(splash_file_entry);
2302 
2303 }
2304 
2305 const char*
2306 GetFullVersion()
2307 {
2308     return _fVersion;
2309 }
2310 
2311 const char*
2312 GetProgramName()
2313 {
2314     return _program_name;
2315 }
2316 
2317 const char*
2318 GetLauncherName()
2319 {
2320     return _launcher_name;
2321 }
2322 
2323 jboolean
2324 IsJavaArgs()
2325 {
2326     return _is_java_args;
2327 }
2328 
2329 static jboolean
2330 IsWildCardEnabled()
2331 {
2332     return _wc_enabled;
2333 }
2334 
2335 int
2336 ContinueInNewThread(InvocationFunctions* ifn, jlong threadStackSize,
2337                     int argc, char **argv,
2338                     int mode, char *what, int ret)
2339 {
2340 
2341     /*
2342      * If user doesn't specify stack size, check if VM has a preference.
2343      * Note that HotSpot no longer supports JNI_VERSION_1_1 but it will
2344      * return its default stack size through the init args structure.
2345      */
2346     if (threadStackSize == 0) {
2347       struct JDK1_1InitArgs args1_1;
2348       memset((void*)&args1_1, 0, sizeof(args1_1));
2349       args1_1.version = JNI_VERSION_1_1;
2350       ifn->GetDefaultJavaVMInitArgs(&args1_1);  /* ignore return value */
2351       if (args1_1.javaStackSize > 0) {
2352          threadStackSize = args1_1.javaStackSize;
2353       }
2354     }
2355 
2356     { /* Create a new thread to create JVM and invoke main method */
2357       JavaMainArgs args;
2358       int rslt;
2359 
2360       args.argc = argc;
2361       args.argv = argv;
2362       args.mode = mode;
2363       args.what = what;
2364       args.ifn = *ifn;
2365 
2366       rslt = ContinueInNewThread0(JavaMain, threadStackSize, (void*)&args);
2367       /* If the caller has deemed there is an error we
2368        * simply return that, otherwise we return the value of
2369        * the callee
2370        */
2371       return (ret != 0) ? ret : rslt;
2372     }
2373 }
2374 
2375 static void
2376 DumpState()
2377 {
2378     if (!JLI_IsTraceLauncher()) return ;
2379     printf("Launcher state:\n");
2380     printf("\tFirst application arg index: %d\n", JLI_GetAppArgIndex());
2381     printf("\tdebug:%s\n", (JLI_IsTraceLauncher() == JNI_TRUE) ? "on" : "off");
2382     printf("\tjavargs:%s\n", (_is_java_args == JNI_TRUE) ? "on" : "off");
2383     printf("\tprogram name:%s\n", GetProgramName());
2384     printf("\tlauncher name:%s\n", GetLauncherName());
2385     printf("\tjavaw:%s\n", (IsJavaw() == JNI_TRUE) ? "on" : "off");
2386     printf("\tfullversion:%s\n", GetFullVersion());
2387 }
2388 
2389 /*
2390  * A utility procedure to always print to stderr
2391  */
2392 JNIEXPORT void JNICALL
2393 JLI_ReportMessage(const char* fmt, ...)
2394 {
2395     va_list vl;
2396     va_start(vl, fmt);
2397     vfprintf(stderr, fmt, vl);
2398     fprintf(stderr, "\n");
2399     va_end(vl);
2400 }
2401 
2402 /*
2403  * A utility procedure to always print to stdout
2404  */
2405 void
2406 JLI_ShowMessage(const char* fmt, ...)
2407 {
2408     va_list vl;
2409     va_start(vl, fmt);
2410     vfprintf(stdout, fmt, vl);
2411     fprintf(stdout, "\n");
2412     va_end(vl);
2413 }