1 /* 2 * Copyright (c) 1995, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /* 27 * Shared source for 'java' command line tool. 28 * 29 * If JAVA_ARGS is defined, then acts as a launcher for applications. For 30 * instance, the JDK command line tools such as javac and javadoc (see 31 * makefiles for more details) are built with this program. Any arguments 32 * prefixed with '-J' will be passed directly to the 'java' command. 33 */ 34 35 /* 36 * One job of the launcher is to remove command line options which the 37 * vm does not understand and will not process. These options include 38 * options which select which style of vm is run (e.g. -client and 39 * -server) as well as options which select the data model to use. 40 * Additionally, for tools which invoke an underlying vm "-J-foo" 41 * options are turned into "-foo" options to the vm. This option 42 * filtering is handled in a number of places in the launcher, some of 43 * it in machine-dependent code. In this file, the function 44 * CheckJvmType removes vm style options and TranslateApplicationArgs 45 * removes "-J" prefixes. The CreateExecutionEnvironment function processes 46 * and removes -d<n> options. On unix, there is a possibility that the running 47 * data model may not match to the desired data model, in this case an exec is 48 * required to start the desired model. If the data models match, then 49 * ParseArguments will remove the -d<n> flags. If the data models do not match 50 * the CreateExecutionEnviroment will remove the -d<n> flags. 51 */ 52 53 54 #include "java.h" 55 56 /* 57 * A NOTE TO DEVELOPERS: For performance reasons it is important that 58 * the program image remain relatively small until after SelectVersion 59 * CreateExecutionEnvironment have finished their possibly recursive 60 * processing. Watch everything, but resist all temptations to use Java 61 * interfaces. 62 */ 63 64 #define USE_STDERR JNI_TRUE /* we usually print to stderr */ 65 #define USE_STDOUT JNI_FALSE 66 67 static jboolean printVersion = JNI_FALSE; /* print and exit */ 68 static jboolean showVersion = JNI_FALSE; /* print but continue */ 69 static jboolean printUsage = JNI_FALSE; /* print and exit*/ 70 static jboolean printTo = USE_STDERR; /* where to print version/usage */ 71 static jboolean printXUsage = JNI_FALSE; /* print and exit*/ 72 static jboolean dryRun = JNI_FALSE; /* initialize VM and exit */ 73 static char *showSettings = NULL; /* print but continue */ 74 static jboolean showResolvedModules = JNI_FALSE; 75 static jboolean listModules = JNI_FALSE; 76 static char *describeModule = NULL; 77 static jboolean validateModules = JNI_FALSE; 78 79 static const char *_program_name; 80 static const char *_launcher_name; 81 static jboolean _is_java_args = JNI_FALSE; 82 static jboolean _have_classpath = JNI_FALSE; 83 static const char *_fVersion; 84 static jboolean _wc_enabled = JNI_FALSE; 85 86 /* 87 * Entries for splash screen environment variables. 88 * putenv is performed in SelectVersion. We need 89 * them in memory until UnsetEnv, so they are made static 90 * global instead of auto local. 91 */ 92 static char* splash_file_entry = NULL; 93 static char* splash_jar_entry = NULL; 94 95 /* 96 * List of VM options to be specified when the VM is created. 97 */ 98 static JavaVMOption *options; 99 static int numOptions, maxOptions; 100 101 /* 102 * Prototypes for functions internal to launcher. 103 */ 104 static void SetClassPath(const char *s); 105 static void SetMainModule(const char *s); 106 static void SelectVersion(int argc, char **argv, char **main_class); 107 static void SetJvmEnvironment(int argc, char **argv); 108 static jboolean ParseArguments(int *pargc, char ***pargv, 109 int *pmode, char **pwhat, 110 int *pret, const char *jrepath); 111 static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv, 112 InvocationFunctions *ifn); 113 static jstring NewPlatformString(JNIEnv *env, char *s); 114 static jclass LoadMainClass(JNIEnv *env, int mode, char *name); 115 static jclass GetApplicationClass(JNIEnv *env); 116 117 static void TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv); 118 static jboolean AddApplicationOptions(int cpathc, const char **cpathv); 119 static void SetApplicationClassPath(const char**); 120 121 static void PrintJavaVersion(JNIEnv *env, jboolean extraLF); 122 static void PrintUsage(JNIEnv* env, jboolean doXUsage); 123 static void ShowSettings(JNIEnv* env, char *optString); 124 static void ShowResolvedModules(JNIEnv* env); 125 static void ListModules(JNIEnv* env); 126 static void DescribeModule(JNIEnv* env, char* optString); 127 static jboolean ValidateModules(JNIEnv* env); 128 129 static void SetPaths(int argc, char **argv); 130 131 static void DumpState(); 132 133 enum OptionKind { 134 LAUNCHER_OPTION = 0, 135 LAUNCHER_OPTION_WITH_ARGUMENT, 136 LAUNCHER_MAIN_OPTION, 137 VM_LONG_OPTION, 138 VM_LONG_OPTION_WITH_ARGUMENT, 139 VM_OPTION 140 }; 141 142 static int GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue); 143 static jboolean IsOptionWithArgument(int argc, char **argv); 144 145 /* Maximum supported entries from jvm.cfg. */ 146 #define INIT_MAX_KNOWN_VMS 10 147 148 /* Values for vmdesc.flag */ 149 enum vmdesc_flag { 150 VM_UNKNOWN = -1, 151 VM_KNOWN, 152 VM_ALIASED_TO, 153 VM_WARN, 154 VM_ERROR, 155 VM_IF_SERVER_CLASS, 156 VM_IGNORE 157 }; 158 159 struct vmdesc { 160 char *name; 161 int flag; 162 char *alias; 163 char *server_class; 164 }; 165 static struct vmdesc *knownVMs = NULL; 166 static int knownVMsCount = 0; 167 static int knownVMsLimit = 0; 168 169 static void GrowKnownVMs(int minimum); 170 static int KnownVMIndex(const char* name); 171 static void FreeKnownVMs(); 172 static jboolean IsWildCardEnabled(); 173 174 /* 175 * This reports error. VM will not be created and no usage is printed. 176 */ 177 #define REPORT_ERROR(AC_ok, AC_failure_message, AC_questionable_arg) \ 178 do { \ 179 if (!AC_ok) { \ 180 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \ 181 printUsage = JNI_FALSE; \ 182 *pret = 1; \ 183 return JNI_FALSE; \ 184 } \ 185 } while (JNI_FALSE) 186 187 #define ARG_CHECK(AC_arg_count, AC_failure_message, AC_questionable_arg) \ 188 do { \ 189 if (AC_arg_count < 1) { \ 190 JLI_ReportErrorMessage(AC_failure_message, AC_questionable_arg); \ 191 printUsage = JNI_TRUE; \ 192 *pret = 1; \ 193 return JNI_TRUE; \ 194 } \ 195 } while (JNI_FALSE) 196 197 /* 198 * Running Java code in primordial thread caused many problems. We will 199 * create a new thread to invoke JVM. See 6316197 for more information. 200 */ 201 static jlong threadStackSize = 0; /* stack size of the new thread */ 202 static jlong maxHeapSize = 0; /* max heap size */ 203 static jlong initialHeapSize = 0; /* inital heap size */ 204 205 /* 206 * A minimum -Xss stack size suitable for all platforms. 207 */ 208 #ifndef STACK_SIZE_MINIMUM 209 #define STACK_SIZE_MINIMUM (32 * KB) 210 #endif 211 212 /* 213 * Entry point. 214 */ 215 int 216 JLI_Launch(int argc, char ** argv, /* main argc, argc */ 217 int jargc, const char** jargv, /* java args */ 218 int appclassc, const char** appclassv, /* app classpath */ 219 const char* fullversion, /* full version defined */ 220 const char* dotversion, /* UNUSED dot version defined */ 221 const char* pname, /* program name */ 222 const char* lname, /* launcher name */ 223 jboolean javaargs, /* JAVA_ARGS */ 224 jboolean cpwildcard, /* classpath wildcard*/ 225 jboolean javaw, /* windows-only javaw */ 226 jint ergo /* unused */ 227 ) 228 { 229 int mode = LM_UNKNOWN; 230 char *what = NULL; 231 char *main_class = NULL; 232 int ret; 233 InvocationFunctions ifn; 234 jlong start, end; 235 char jvmpath[MAXPATHLEN]; 236 char jrepath[MAXPATHLEN]; 237 char jvmcfg[MAXPATHLEN]; 238 239 _fVersion = fullversion; 240 _launcher_name = lname; 241 _program_name = pname; 242 _is_java_args = javaargs; 243 _wc_enabled = cpwildcard; 244 245 InitLauncher(javaw); 246 DumpState(); 247 if (JLI_IsTraceLauncher()) { 248 int i; 249 printf("Command line args:\n"); 250 for (i = 0; i < argc ; i++) { 251 printf("argv[%d] = %s\n", i, argv[i]); 252 } 253 AddOption("-Dsun.java.launcher.diag=true", NULL); 254 } 255 256 /* 257 * SelectVersion() has several responsibilities: 258 * 259 * 1) Disallow specification of another JRE. With 1.9, another 260 * version of the JRE cannot be invoked. 261 * 2) Allow for a JRE version to invoke JDK 1.9 or later. Since 262 * all mJRE directives have been stripped from the request but 263 * the pre 1.9 JRE [ 1.6 thru 1.8 ], it is as if 1.9+ has been 264 * invoked from the command line. 265 */ 266 SelectVersion(argc, argv, &main_class); 267 268 CreateExecutionEnvironment(&argc, &argv, 269 jrepath, sizeof(jrepath), 270 jvmpath, sizeof(jvmpath), 271 jvmcfg, sizeof(jvmcfg)); 272 273 if (!IsJavaArgs()) { 274 SetJvmEnvironment(argc,argv); 275 } 276 277 ifn.CreateJavaVM = 0; 278 ifn.GetDefaultJavaVMInitArgs = 0; 279 280 if (JLI_IsTraceLauncher()) { 281 start = CounterGet(); 282 } 283 284 if (!LoadJavaVM(jvmpath, &ifn)) { 285 return(6); 286 } 287 288 if (JLI_IsTraceLauncher()) { 289 end = CounterGet(); 290 } 291 292 JLI_TraceLauncher("%ld micro seconds to LoadJavaVM\n", 293 (long)(jint)Counter2Micros(end-start)); 294 295 ++argv; 296 --argc; 297 298 if (IsJavaArgs()) { 299 /* Preprocess wrapper arguments */ 300 TranslateApplicationArgs(jargc, jargv, &argc, &argv); 301 if (!AddApplicationOptions(appclassc, appclassv)) { 302 return(1); 303 } 304 } else { 305 /* Set default CLASSPATH */ 306 char* cpath = getenv("CLASSPATH"); 307 if (cpath != NULL) { 308 SetClassPath(cpath); 309 } 310 } 311 312 /* Parse command line options; if the return value of 313 * ParseArguments is false, the program should exit. 314 */ 315 if (!ParseArguments(&argc, &argv, &mode, &what, &ret, jrepath)) 316 { 317 return(ret); 318 } 319 320 /* Override class path if -jar flag was specified */ 321 if (mode == LM_JAR) { 322 SetClassPath(what); /* Override class path */ 323 } 324 325 /* set the -Dsun.java.command pseudo property */ 326 SetJavaCommandLineProp(what, argc, argv); 327 328 /* Set the -Dsun.java.launcher pseudo property */ 329 SetJavaLauncherProp(); 330 331 /* set the -Dsun.java.launcher.* platform properties */ 332 SetJavaLauncherPlatformProps(); 333 334 return JVMInit(&ifn, threadStackSize, argc, argv, mode, what, ret); 335 } 336 /* 337 * Always detach the main thread so that it appears to have ended when 338 * the application's main method exits. This will invoke the 339 * uncaught exception handler machinery if main threw an 340 * exception. An uncaught exception handler cannot change the 341 * launcher's return code except by calling System.exit. 342 * 343 * Wait for all non-daemon threads to end, then destroy the VM. 344 * This will actually create a trivial new Java waiter thread 345 * named "DestroyJavaVM", but this will be seen as a different 346 * thread from the one that executed main, even though they are 347 * the same C thread. This allows mainThread.join() and 348 * mainThread.isAlive() to work as expected. 349 */ 350 #define LEAVE() \ 351 do { \ 352 if ((*vm)->DetachCurrentThread(vm) != JNI_OK) { \ 353 JLI_ReportErrorMessage(JVM_ERROR2); \ 354 ret = 1; \ 355 } \ 356 if (JNI_TRUE) { \ 357 (*vm)->DestroyJavaVM(vm); \ 358 return ret; \ 359 } \ 360 } while (JNI_FALSE) 361 362 #define CHECK_EXCEPTION_NULL_LEAVE(CENL_exception) \ 363 do { \ 364 if ((*env)->ExceptionOccurred(env)) { \ 365 JLI_ReportExceptionDescription(env); \ 366 LEAVE(); \ 367 } \ 368 if ((CENL_exception) == NULL) { \ 369 JLI_ReportErrorMessage(JNI_ERROR); \ 370 LEAVE(); \ 371 } \ 372 } while (JNI_FALSE) 373 374 #define CHECK_EXCEPTION_LEAVE(CEL_return_value) \ 375 do { \ 376 if ((*env)->ExceptionOccurred(env)) { \ 377 JLI_ReportExceptionDescription(env); \ 378 ret = (CEL_return_value); \ 379 LEAVE(); \ 380 } \ 381 } while (JNI_FALSE) 382 383 384 int JNICALL 385 JavaMain(void * _args) 386 { 387 JavaMainArgs *args = (JavaMainArgs *)_args; 388 int argc = args->argc; 389 char **argv = args->argv; 390 int mode = args->mode; 391 char *what = args->what; 392 InvocationFunctions ifn = args->ifn; 393 394 JavaVM *vm = 0; 395 JNIEnv *env = 0; 396 jclass mainClass = NULL; 397 jclass appClass = NULL; // actual application class being launched 398 jmethodID mainID; 399 jobjectArray mainArgs; 400 int ret = 0; 401 jlong start, end; 402 403 RegisterThread(); 404 405 /* Initialize the virtual machine */ 406 start = CounterGet(); 407 if (!InitializeJVM(&vm, &env, &ifn)) { 408 JLI_ReportErrorMessage(JVM_ERROR1); 409 exit(1); 410 } 411 412 if (showSettings != NULL) { 413 ShowSettings(env, showSettings); 414 CHECK_EXCEPTION_LEAVE(1); 415 } 416 417 // show resolved modules and continue 418 if (showResolvedModules) { 419 ShowResolvedModules(env); 420 CHECK_EXCEPTION_LEAVE(1); 421 } 422 423 // list observable modules, then exit 424 if (listModules) { 425 ListModules(env); 426 CHECK_EXCEPTION_LEAVE(1); 427 LEAVE(); 428 } 429 430 // describe a module, then exit 431 if (describeModule != NULL) { 432 DescribeModule(env, describeModule); 433 CHECK_EXCEPTION_LEAVE(1); 434 LEAVE(); 435 } 436 437 // validate modules on the module path, then exit 438 if (validateModules) { 439 jboolean okay = ValidateModules(env); 440 CHECK_EXCEPTION_LEAVE(1); 441 if (!okay) ret = 1; 442 LEAVE(); 443 } 444 445 if (printVersion || showVersion) { 446 PrintJavaVersion(env, showVersion); 447 CHECK_EXCEPTION_LEAVE(0); 448 if (printVersion) { 449 LEAVE(); 450 } 451 } 452 453 /* If the user specified neither a class name nor a JAR file */ 454 if (printXUsage || printUsage || what == 0 || mode == LM_UNKNOWN) { 455 PrintUsage(env, printXUsage); 456 CHECK_EXCEPTION_LEAVE(1); 457 LEAVE(); 458 } 459 460 FreeKnownVMs(); /* after last possible PrintUsage */ 461 462 if (JLI_IsTraceLauncher()) { 463 end = CounterGet(); 464 JLI_TraceLauncher("%ld micro seconds to InitializeJVM\n", 465 (long)(jint)Counter2Micros(end-start)); 466 } 467 468 /* At this stage, argc/argv have the application's arguments */ 469 if (JLI_IsTraceLauncher()){ 470 int i; 471 printf("%s is '%s'\n", launchModeNames[mode], what); 472 printf("App's argc is %d\n", argc); 473 for (i=0; i < argc; i++) { 474 printf(" argv[%2d] = '%s'\n", i, argv[i]); 475 } 476 } 477 478 ret = 1; 479 480 /* 481 * Get the application's main class. It also checks if the main 482 * method exists. 483 * 484 * See bugid 5030265. The Main-Class name has already been parsed 485 * from the manifest, but not parsed properly for UTF-8 support. 486 * Hence the code here ignores the value previously extracted and 487 * uses the pre-existing code to reextract the value. This is 488 * possibly an end of release cycle expedient. However, it has 489 * also been discovered that passing some character sets through 490 * the environment has "strange" behavior on some variants of 491 * Windows. Hence, maybe the manifest parsing code local to the 492 * launcher should never be enhanced. 493 * 494 * Hence, future work should either: 495 * 1) Correct the local parsing code and verify that the 496 * Main-Class attribute gets properly passed through 497 * all environments, 498 * 2) Remove the vestages of maintaining main_class through 499 * the environment (and remove these comments). 500 * 501 * This method also correctly handles launching existing JavaFX 502 * applications that may or may not have a Main-Class manifest entry. 503 */ 504 mainClass = LoadMainClass(env, mode, what); 505 CHECK_EXCEPTION_NULL_LEAVE(mainClass); 506 /* 507 * In some cases when launching an application that needs a helper, e.g., a 508 * JavaFX application with no main method, the mainClass will not be the 509 * applications own main class but rather a helper class. To keep things 510 * consistent in the UI we need to track and report the application main class. 511 */ 512 appClass = GetApplicationClass(env); 513 NULL_CHECK_RETURN_VALUE(appClass, -1); 514 515 /* Build platform specific argument array */ 516 mainArgs = CreateApplicationArgs(env, argv, argc); 517 CHECK_EXCEPTION_NULL_LEAVE(mainArgs); 518 519 if (dryRun) { 520 ret = 0; 521 LEAVE(); 522 } 523 524 /* 525 * PostJVMInit uses the class name as the application name for GUI purposes, 526 * for example, on OSX this sets the application name in the menu bar for 527 * both SWT and JavaFX. So we'll pass the actual application class here 528 * instead of mainClass as that may be a launcher or helper class instead 529 * of the application class. 530 */ 531 PostJVMInit(env, appClass, vm); 532 CHECK_EXCEPTION_LEAVE(1); 533 534 /* 535 * The LoadMainClass not only loads the main class, it will also ensure 536 * that the main method's signature is correct, therefore further checking 537 * is not required. The main method is invoked here so that extraneous java 538 * stacks are not in the application stack trace. 539 */ 540 mainID = (*env)->GetStaticMethodID(env, mainClass, "main", 541 "([Ljava/lang/String;)V"); 542 CHECK_EXCEPTION_NULL_LEAVE(mainID); 543 544 /* Invoke main method. */ 545 (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs); 546 547 /* 548 * The launcher's exit code (in the absence of calls to 549 * System.exit) will be non-zero if main threw an exception. 550 */ 551 ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1; 552 553 LEAVE(); 554 } 555 556 /* 557 * Test if the given name is one of the class path options. 558 */ 559 static jboolean 560 IsClassPathOption(const char* name) { 561 return JLI_StrCmp(name, "-classpath") == 0 || 562 JLI_StrCmp(name, "-cp") == 0 || 563 JLI_StrCmp(name, "--class-path") == 0; 564 } 565 566 /* 567 * Test if the given name is a launcher option taking the main entry point. 568 */ 569 static jboolean 570 IsLauncherMainOption(const char* name) { 571 return JLI_StrCmp(name, "--module") == 0 || 572 JLI_StrCmp(name, "-m") == 0; 573 } 574 575 /* 576 * Test if the given name is a white-space launcher option. 577 */ 578 static jboolean 579 IsLauncherOption(const char* name) { 580 return IsClassPathOption(name) || 581 IsLauncherMainOption(name) || 582 JLI_StrCmp(name, "--describe-module") == 0 || 583 JLI_StrCmp(name, "-d") == 0; 584 } 585 586 /* 587 * Test if the given name is a module-system white-space option that 588 * will be passed to the VM with its corresponding long-form option 589 * name and "=" delimiter. 590 */ 591 static jboolean 592 IsModuleOption(const char* name) { 593 return JLI_StrCmp(name, "--module-path") == 0 || 594 JLI_StrCmp(name, "-p") == 0 || 595 JLI_StrCmp(name, "--upgrade-module-path") == 0 || 596 JLI_StrCmp(name, "--add-modules") == 0 || 597 JLI_StrCmp(name, "--limit-modules") == 0 || 598 JLI_StrCmp(name, "--add-exports") == 0 || 599 JLI_StrCmp(name, "--add-opens") == 0 || 600 JLI_StrCmp(name, "--add-reads") == 0 || 601 JLI_StrCmp(name, "--patch-module") == 0; 602 } 603 604 static jboolean 605 IsLongFormModuleOption(const char* name) { 606 return JLI_StrCCmp(name, "--module-path=") == 0 || 607 JLI_StrCCmp(name, "--upgrade-module-path=") == 0 || 608 JLI_StrCCmp(name, "--add-modules=") == 0 || 609 JLI_StrCCmp(name, "--limit-modules=") == 0 || 610 JLI_StrCCmp(name, "--add-exports=") == 0 || 611 JLI_StrCCmp(name, "--add-reads=") == 0 || 612 JLI_StrCCmp(name, "--patch-module=") == 0; 613 } 614 615 /* 616 * Test if the given name has a white space option. 617 */ 618 jboolean 619 IsWhiteSpaceOption(const char* name) { 620 return IsModuleOption(name) || 621 IsLauncherOption(name); 622 } 623 624 /* 625 * Checks the command line options to find which JVM type was 626 * specified. If no command line option was given for the JVM type, 627 * the default type is used. The environment variable 628 * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also 629 * checked as ways of specifying which JVM type to invoke. 630 */ 631 char * 632 CheckJvmType(int *pargc, char ***argv, jboolean speculative) { 633 int i, argi; 634 int argc; 635 char **newArgv; 636 int newArgvIdx = 0; 637 int isVMType; 638 int jvmidx = -1; 639 char *jvmtype = getenv("JDK_ALTERNATE_VM"); 640 641 argc = *pargc; 642 643 /* To make things simpler we always copy the argv array */ 644 newArgv = JLI_MemAlloc((argc + 1) * sizeof(char *)); 645 646 /* The program name is always present */ 647 newArgv[newArgvIdx++] = (*argv)[0]; 648 649 for (argi = 1; argi < argc; argi++) { 650 char *arg = (*argv)[argi]; 651 isVMType = 0; 652 653 if (IsJavaArgs()) { 654 if (arg[0] != '-') { 655 newArgv[newArgvIdx++] = arg; 656 continue; 657 } 658 } else { 659 if (IsWhiteSpaceOption(arg)) { 660 newArgv[newArgvIdx++] = arg; 661 argi++; 662 if (argi < argc) { 663 newArgv[newArgvIdx++] = (*argv)[argi]; 664 } 665 continue; 666 } 667 if (arg[0] != '-') break; 668 } 669 670 /* Did the user pass an explicit VM type? */ 671 i = KnownVMIndex(arg); 672 if (i >= 0) { 673 jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */ 674 isVMType = 1; 675 *pargc = *pargc - 1; 676 } 677 678 /* Did the user specify an "alternate" VM? */ 679 else if (JLI_StrCCmp(arg, "-XXaltjvm=") == 0 || JLI_StrCCmp(arg, "-J-XXaltjvm=") == 0) { 680 isVMType = 1; 681 jvmtype = arg+((arg[1]=='X')? 10 : 12); 682 jvmidx = -1; 683 } 684 685 if (!isVMType) { 686 newArgv[newArgvIdx++] = arg; 687 } 688 } 689 690 /* 691 * Finish copying the arguments if we aborted the above loop. 692 * NOTE that if we aborted via "break" then we did NOT copy the 693 * last argument above, and in addition argi will be less than 694 * argc. 695 */ 696 while (argi < argc) { 697 newArgv[newArgvIdx++] = (*argv)[argi]; 698 argi++; 699 } 700 701 /* argv is null-terminated */ 702 newArgv[newArgvIdx] = 0; 703 704 /* Copy back argv */ 705 *argv = newArgv; 706 *pargc = newArgvIdx; 707 708 /* use the default VM type if not specified (no alias processing) */ 709 if (jvmtype == NULL) { 710 char* result = knownVMs[0].name+1; 711 JLI_TraceLauncher("Default VM: %s\n", result); 712 return result; 713 } 714 715 /* if using an alternate VM, no alias processing */ 716 if (jvmidx < 0) 717 return jvmtype; 718 719 /* Resolve aliases first */ 720 { 721 int loopCount = 0; 722 while (knownVMs[jvmidx].flag == VM_ALIASED_TO) { 723 int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias); 724 725 if (loopCount > knownVMsCount) { 726 if (!speculative) { 727 JLI_ReportErrorMessage(CFG_ERROR1); 728 exit(1); 729 } else { 730 return "ERROR"; 731 /* break; */ 732 } 733 } 734 735 if (nextIdx < 0) { 736 if (!speculative) { 737 JLI_ReportErrorMessage(CFG_ERROR2, knownVMs[jvmidx].alias); 738 exit(1); 739 } else { 740 return "ERROR"; 741 } 742 } 743 jvmidx = nextIdx; 744 jvmtype = knownVMs[jvmidx].name+1; 745 loopCount++; 746 } 747 } 748 749 switch (knownVMs[jvmidx].flag) { 750 case VM_WARN: 751 if (!speculative) { 752 JLI_ReportErrorMessage(CFG_WARN1, jvmtype, knownVMs[0].name + 1); 753 } 754 /* fall through */ 755 case VM_IGNORE: 756 jvmtype = knownVMs[jvmidx=0].name + 1; 757 /* fall through */ 758 case VM_KNOWN: 759 break; 760 case VM_ERROR: 761 if (!speculative) { 762 JLI_ReportErrorMessage(CFG_ERROR3, jvmtype); 763 exit(1); 764 } else { 765 return "ERROR"; 766 } 767 } 768 769 return jvmtype; 770 } 771 772 /* 773 * This method must be called before the VM is loaded, primarily 774 * used to parse and set any VM related options or env variables. 775 * This function is non-destructive leaving the argument list intact. 776 */ 777 static void 778 SetJvmEnvironment(int argc, char **argv) { 779 780 static const char* NMT_Env_Name = "NMT_LEVEL_"; 781 int i; 782 /* process only the launcher arguments */ 783 for (i = 0; i < argc; i++) { 784 char *arg = argv[i]; 785 /* 786 * Since this must be a VM flag we stop processing once we see 787 * an argument the launcher would not have processed beyond (such 788 * as -version or -h), or an argument that indicates the following 789 * arguments are for the application (i.e. the main class name, or 790 * the -jar argument). 791 */ 792 if (i > 0) { 793 char *prev = argv[i - 1]; 794 // skip non-dash arg preceded by class path specifiers 795 if (*arg != '-' && IsWhiteSpaceOption(prev)) { 796 continue; 797 } 798 799 if (*arg != '-' || isTerminalOpt(arg)) { 800 return; 801 } 802 } 803 /* 804 * The following case checks for "-XX:NativeMemoryTracking=value". 805 * If value is non null, an environmental variable set to this value 806 * will be created to be used by the JVM. 807 * The argument is passed to the JVM, which will check validity. 808 * The JVM is responsible for removing the env variable. 809 */ 810 if (JLI_StrCCmp(arg, "-XX:NativeMemoryTracking=") == 0) { 811 int retval; 812 // get what follows this parameter, include "=" 813 size_t pnlen = JLI_StrLen("-XX:NativeMemoryTracking="); 814 if (JLI_StrLen(arg) > pnlen) { 815 char* value = arg + pnlen; 816 size_t pbuflen = pnlen + JLI_StrLen(value) + 10; // 10 max pid digits 817 818 /* 819 * ensures that malloc successful 820 * DONT JLI_MemFree() pbuf. JLI_PutEnv() uses system call 821 * that could store the address. 822 */ 823 char * pbuf = (char*)JLI_MemAlloc(pbuflen); 824 825 JLI_Snprintf(pbuf, pbuflen, "%s%d=%s", NMT_Env_Name, JLI_GetPid(), value); 826 retval = JLI_PutEnv(pbuf); 827 if (JLI_IsTraceLauncher()) { 828 char* envName; 829 char* envBuf; 830 831 // ensures that malloc successful 832 envName = (char*)JLI_MemAlloc(pbuflen); 833 JLI_Snprintf(envName, pbuflen, "%s%d", NMT_Env_Name, JLI_GetPid()); 834 835 printf("TRACER_MARKER: NativeMemoryTracking: env var is %s\n",envName); 836 printf("TRACER_MARKER: NativeMemoryTracking: putenv arg %s\n",pbuf); 837 envBuf = getenv(envName); 838 printf("TRACER_MARKER: NativeMemoryTracking: got value %s\n",envBuf); 839 free(envName); 840 } 841 } 842 } 843 } 844 } 845 846 /* copied from HotSpot function "atomll()" */ 847 static int 848 parse_size(const char *s, jlong *result) { 849 jlong n = 0; 850 int args_read = sscanf(s, JLONG_FORMAT_SPECIFIER, &n); 851 if (args_read != 1) { 852 return 0; 853 } 854 while (*s != '\0' && *s >= '0' && *s <= '9') { 855 s++; 856 } 857 // 4705540: illegal if more characters are found after the first non-digit 858 if (JLI_StrLen(s) > 1) { 859 return 0; 860 } 861 switch (*s) { 862 case 'T': case 't': 863 *result = n * GB * KB; 864 return 1; 865 case 'G': case 'g': 866 *result = n * GB; 867 return 1; 868 case 'M': case 'm': 869 *result = n * MB; 870 return 1; 871 case 'K': case 'k': 872 *result = n * KB; 873 return 1; 874 case '\0': 875 *result = n; 876 return 1; 877 default: 878 /* Create JVM with default stack and let VM handle malformed -Xss string*/ 879 return 0; 880 } 881 } 882 883 /* 884 * Adds a new VM option with the given name and value. 885 */ 886 void 887 AddOption(char *str, void *info) 888 { 889 /* 890 * Expand options array if needed to accommodate at least one more 891 * VM option. 892 */ 893 if (numOptions >= maxOptions) { 894 if (options == 0) { 895 maxOptions = 4; 896 options = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption)); 897 } else { 898 JavaVMOption *tmp; 899 maxOptions *= 2; 900 tmp = JLI_MemAlloc(maxOptions * sizeof(JavaVMOption)); 901 memcpy(tmp, options, numOptions * sizeof(JavaVMOption)); 902 JLI_MemFree(options); 903 options = tmp; 904 } 905 } 906 options[numOptions].optionString = str; 907 options[numOptions++].extraInfo = info; 908 909 if (JLI_StrCCmp(str, "-Xss") == 0) { 910 jlong tmp; 911 if (parse_size(str + 4, &tmp)) { 912 threadStackSize = tmp; 913 /* 914 * Make sure the thread stack size is big enough that we won't get a stack 915 * overflow before the JVM startup code can check to make sure the stack 916 * is big enough. 917 */ 918 if (threadStackSize < (jlong)STACK_SIZE_MINIMUM) { 919 threadStackSize = STACK_SIZE_MINIMUM; 920 } 921 } 922 } 923 924 if (JLI_StrCCmp(str, "-Xmx") == 0) { 925 jlong tmp; 926 if (parse_size(str + 4, &tmp)) { 927 maxHeapSize = tmp; 928 } 929 } 930 931 if (JLI_StrCCmp(str, "-Xms") == 0) { 932 jlong tmp; 933 if (parse_size(str + 4, &tmp)) { 934 initialHeapSize = tmp; 935 } 936 } 937 } 938 939 static void 940 SetClassPath(const char *s) 941 { 942 char *def; 943 const char *orig = s; 944 static const char format[] = "-Djava.class.path=%s"; 945 /* 946 * usually we should not get a null pointer, but there are cases where 947 * we might just get one, in which case we simply ignore it, and let the 948 * caller deal with it 949 */ 950 if (s == NULL) 951 return; 952 s = JLI_WildcardExpandClasspath(s); 953 if (sizeof(format) - 2 + JLI_StrLen(s) < JLI_StrLen(s)) 954 // s is became corrupted after expanding wildcards 955 return; 956 def = JLI_MemAlloc(sizeof(format) 957 - 2 /* strlen("%s") */ 958 + JLI_StrLen(s)); 959 sprintf(def, format, s); 960 AddOption(def, NULL); 961 if (s != orig) 962 JLI_MemFree((char *) s); 963 _have_classpath = JNI_TRUE; 964 } 965 966 static void 967 AddLongFormOption(const char *option, const char *arg) 968 { 969 static const char format[] = "%s=%s"; 970 char *def; 971 size_t def_len; 972 973 def_len = JLI_StrLen(option) + 1 + JLI_StrLen(arg) + 1; 974 def = JLI_MemAlloc(def_len); 975 JLI_Snprintf(def, def_len, format, option, arg); 976 AddOption(def, NULL); 977 } 978 979 static void 980 SetMainModule(const char *s) 981 { 982 static const char format[] = "-Djdk.module.main=%s"; 983 char* slash = JLI_StrChr(s, '/'); 984 size_t s_len, def_len; 985 char *def; 986 987 /* value may be <module> or <module>/<mainclass> */ 988 if (slash == NULL) { 989 s_len = JLI_StrLen(s); 990 } else { 991 s_len = (size_t) (slash - s); 992 } 993 def_len = sizeof(format) 994 - 2 /* strlen("%s") */ 995 + s_len; 996 def = JLI_MemAlloc(def_len); 997 JLI_Snprintf(def, def_len, format, s); 998 AddOption(def, NULL); 999 } 1000 1001 /* 1002 * The SelectVersion() routine ensures that an appropriate version of 1003 * the JRE is running. The specification for the appropriate version 1004 * is obtained from either the manifest of a jar file (preferred) or 1005 * from command line options. 1006 * The routine also parses splash screen command line options and 1007 * passes on their values in private environment variables. 1008 */ 1009 static void 1010 SelectVersion(int argc, char **argv, char **main_class) 1011 { 1012 char *arg; 1013 char *operand; 1014 char *version = NULL; 1015 char *jre = NULL; 1016 int jarflag = 0; 1017 int headlessflag = 0; 1018 int restrict_search = -1; /* -1 implies not known */ 1019 manifest_info info; 1020 char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "="; 1021 char *splash_file_name = NULL; 1022 char *splash_jar_name = NULL; 1023 char *env_in; 1024 int res; 1025 jboolean has_arg; 1026 1027 /* 1028 * If the version has already been selected, set *main_class 1029 * with the value passed through the environment (if any) and 1030 * simply return. 1031 */ 1032 1033 /* 1034 * This environmental variable can be set by mJRE capable JREs 1035 * [ 1.5 thru 1.8 ]. All other aspects of mJRE processing have been 1036 * stripped by those JREs. This environmental variable allows 1.9+ 1037 * JREs to be started by these mJRE capable JREs. 1038 * Note that mJRE directives in the jar manifest file would have been 1039 * ignored for a JRE started by another JRE... 1040 * .. skipped for JRE 1.5 and beyond. 1041 * .. not even checked for pre 1.5. 1042 */ 1043 if ((env_in = getenv(ENV_ENTRY)) != NULL) { 1044 if (*env_in != '\0') 1045 *main_class = JLI_StringDup(env_in); 1046 return; 1047 } 1048 1049 /* 1050 * Scan through the arguments for options relevant to multiple JRE 1051 * support. Multiple JRE support existed in JRE versions 1.5 thru 1.8. 1052 * 1053 * This capability is no longer available with JRE versions 1.9 and later. 1054 * These command line options are reported as errors. 1055 */ 1056 1057 argc--; 1058 argv++; 1059 while ((arg = *argv) != 0 && *arg == '-') { 1060 has_arg = IsOptionWithArgument(argc, argv); 1061 if (JLI_StrCCmp(arg, "-version:") == 0) { 1062 JLI_ReportErrorMessage(SPC_ERROR1); 1063 } else if (JLI_StrCmp(arg, "-jre-restrict-search") == 0) { 1064 JLI_ReportErrorMessage(SPC_ERROR2); 1065 } else if (JLI_StrCmp(arg, "-jre-no-restrict-search") == 0) { 1066 JLI_ReportErrorMessage(SPC_ERROR2); 1067 } else { 1068 if (JLI_StrCmp(arg, "-jar") == 0) 1069 jarflag = 1; 1070 if (IsWhiteSpaceOption(arg)) { 1071 if (has_arg) { 1072 argc--; 1073 argv++; 1074 arg = *argv; 1075 } 1076 } 1077 1078 /* 1079 * Checking for headless toolkit option in the some way as AWT does: 1080 * "true" means true and any other value means false 1081 */ 1082 if (JLI_StrCmp(arg, "-Djava.awt.headless=true") == 0) { 1083 headlessflag = 1; 1084 } else if (JLI_StrCCmp(arg, "-Djava.awt.headless=") == 0) { 1085 headlessflag = 0; 1086 } else if (JLI_StrCCmp(arg, "-splash:") == 0) { 1087 splash_file_name = arg+8; 1088 } 1089 } 1090 argc--; 1091 argv++; 1092 } 1093 if (argc <= 0) { /* No operand? Possibly legit with -[full]version */ 1094 operand = NULL; 1095 } else { 1096 argc--; 1097 operand = *argv++; 1098 } 1099 1100 /* 1101 * If there is a jar file, read the manifest. If the jarfile can't be 1102 * read, the manifest can't be read from the jar file, or the manifest 1103 * is corrupt, issue the appropriate error messages and exit. 1104 * 1105 * Even if there isn't a jar file, construct a manifest_info structure 1106 * containing the command line information. It's a convenient way to carry 1107 * this data around. 1108 */ 1109 if (jarflag && operand) { 1110 if ((res = JLI_ParseManifest(operand, &info)) != 0) { 1111 if (res == -1) 1112 JLI_ReportErrorMessage(JAR_ERROR2, operand); 1113 else 1114 JLI_ReportErrorMessage(JAR_ERROR3, operand); 1115 exit(1); 1116 } 1117 1118 /* 1119 * Command line splash screen option should have precedence 1120 * over the manifest, so the manifest data is used only if 1121 * splash_file_name has not been initialized above during command 1122 * line parsing 1123 */ 1124 if (!headlessflag && !splash_file_name && info.splashscreen_image_file_name) { 1125 splash_file_name = info.splashscreen_image_file_name; 1126 splash_jar_name = operand; 1127 } 1128 } else { 1129 info.manifest_version = NULL; 1130 info.main_class = NULL; 1131 info.jre_version = NULL; 1132 info.jre_restrict_search = 0; 1133 } 1134 1135 /* 1136 * Passing on splash screen info in environment variables 1137 */ 1138 if (splash_file_name && !headlessflag) { 1139 char* splash_file_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_FILE_ENV_ENTRY "=")+JLI_StrLen(splash_file_name)+1); 1140 JLI_StrCpy(splash_file_entry, SPLASH_FILE_ENV_ENTRY "="); 1141 JLI_StrCat(splash_file_entry, splash_file_name); 1142 putenv(splash_file_entry); 1143 } 1144 if (splash_jar_name && !headlessflag) { 1145 char* splash_jar_entry = JLI_MemAlloc(JLI_StrLen(SPLASH_JAR_ENV_ENTRY "=")+JLI_StrLen(splash_jar_name)+1); 1146 JLI_StrCpy(splash_jar_entry, SPLASH_JAR_ENV_ENTRY "="); 1147 JLI_StrCat(splash_jar_entry, splash_jar_name); 1148 putenv(splash_jar_entry); 1149 } 1150 1151 1152 /* 1153 * "Valid" returns (other than unrecoverable errors) follow. Set 1154 * main_class as a side-effect of this routine. 1155 */ 1156 if (info.main_class != NULL) 1157 *main_class = JLI_StringDup(info.main_class); 1158 1159 if (info.jre_version == NULL) { 1160 JLI_FreeManifest(); 1161 return; 1162 } 1163 1164 } 1165 1166 /* 1167 * Test if the current argv is an option, i.e. with a leading `-` 1168 * and followed with an argument without a leading `-`. 1169 */ 1170 static jboolean 1171 IsOptionWithArgument(int argc, char** argv) { 1172 char* option; 1173 char* arg; 1174 1175 if (argc <= 1) 1176 return JNI_FALSE; 1177 1178 option = *argv; 1179 arg = *(argv+1); 1180 return *option == '-' && *arg != '-'; 1181 } 1182 1183 /* 1184 * Gets the option, and its argument if the option has an argument. 1185 * It will update *pargc, **pargv to the next option. 1186 */ 1187 static int 1188 GetOpt(int *pargc, char ***pargv, char **poption, char **pvalue) { 1189 int argc = *pargc; 1190 char** argv = *pargv; 1191 char* arg = *argv; 1192 1193 char* option = arg; 1194 char* value = NULL; 1195 char* equals = NULL; 1196 int kind = LAUNCHER_OPTION; 1197 jboolean has_arg = JNI_FALSE; 1198 1199 // check if this option may be a white-space option with an argument 1200 has_arg = IsOptionWithArgument(argc, argv); 1201 1202 argv++; --argc; 1203 if (IsLauncherOption(arg)) { 1204 if (has_arg) { 1205 value = *argv; 1206 argv++; --argc; 1207 } 1208 kind = IsLauncherMainOption(arg) ? LAUNCHER_MAIN_OPTION 1209 : LAUNCHER_OPTION_WITH_ARGUMENT; 1210 } else if (IsModuleOption(arg)) { 1211 kind = VM_LONG_OPTION_WITH_ARGUMENT; 1212 if (has_arg) { 1213 value = *argv; 1214 argv++; --argc; 1215 } 1216 1217 /* 1218 * Support short form alias 1219 */ 1220 if (JLI_StrCmp(arg, "-p") == 0) { 1221 option = "--module-path"; 1222 } 1223 1224 } else if (JLI_StrCCmp(arg, "--") == 0 && (equals = JLI_StrChr(arg, '=')) != NULL) { 1225 value = equals+1; 1226 if (JLI_StrCCmp(arg, "--describe-module=") == 0 || 1227 JLI_StrCCmp(arg, "--module=") == 0 || 1228 JLI_StrCCmp(arg, "--class-path=") == 0) { 1229 kind = LAUNCHER_OPTION_WITH_ARGUMENT; 1230 } else { 1231 kind = VM_LONG_OPTION; 1232 } 1233 } 1234 1235 *pargc = argc; 1236 *pargv = argv; 1237 *poption = option; 1238 *pvalue = value; 1239 return kind; 1240 } 1241 1242 /* 1243 * Parses command line arguments. Returns JNI_FALSE if launcher 1244 * should exit without starting vm, returns JNI_TRUE if vm needs 1245 * to be started to process given options. *pret (the launcher 1246 * process return value) is set to 0 for a normal exit. 1247 */ 1248 static jboolean 1249 ParseArguments(int *pargc, char ***pargv, 1250 int *pmode, char **pwhat, 1251 int *pret, const char *jrepath) 1252 { 1253 int argc = *pargc; 1254 char **argv = *pargv; 1255 int mode = LM_UNKNOWN; 1256 char *arg; 1257 1258 *pret = 0; 1259 1260 while ((arg = *argv) != 0 && *arg == '-') { 1261 char *option = NULL; 1262 char *value = NULL; 1263 int kind = GetOpt(&argc, &argv, &option, &value); 1264 jboolean has_arg = value != NULL && JLI_StrLen(value) > 0; 1265 jboolean has_arg_any_len = value != NULL; 1266 1267 /* 1268 * Option to set main entry point 1269 */ 1270 if (JLI_StrCmp(arg, "-jar") == 0) { 1271 ARG_CHECK(argc, ARG_ERROR2, arg); 1272 mode = LM_JAR; 1273 } else if (JLI_StrCmp(arg, "--module") == 0 || 1274 JLI_StrCCmp(arg, "--module=") == 0 || 1275 JLI_StrCmp(arg, "-m") == 0) { 1276 REPORT_ERROR (has_arg, ARG_ERROR5, arg); 1277 SetMainModule(value); 1278 mode = LM_MODULE; 1279 if (has_arg) { 1280 *pwhat = value; 1281 break; 1282 } 1283 } else if (JLI_StrCmp(arg, "--class-path") == 0 || 1284 JLI_StrCCmp(arg, "--class-path=") == 0 || 1285 JLI_StrCmp(arg, "-classpath") == 0 || 1286 JLI_StrCmp(arg, "-cp") == 0) { 1287 REPORT_ERROR (has_arg_any_len, ARG_ERROR1, arg); 1288 SetClassPath(value); 1289 mode = LM_CLASS; 1290 } else if (JLI_StrCmp(arg, "--list-modules") == 0) { 1291 listModules = JNI_TRUE; 1292 } else if (JLI_StrCmp(arg, "--show-resolved-modules") == 0) { 1293 showResolvedModules = JNI_TRUE; 1294 } else if (JLI_StrCmp(arg, "--validate-modules") == 0) { 1295 AddOption("-Djdk.module.minimumBoot=true", NULL); 1296 validateModules = JNI_TRUE; 1297 } else if (JLI_StrCmp(arg, "--describe-module") == 0 || 1298 JLI_StrCCmp(arg, "--describe-module=") == 0 || 1299 JLI_StrCmp(arg, "-d") == 0) { 1300 REPORT_ERROR (has_arg_any_len, ARG_ERROR12, arg); 1301 describeModule = value; 1302 /* 1303 * Parse white-space options 1304 */ 1305 } else if (has_arg) { 1306 if (kind == VM_LONG_OPTION) { 1307 AddOption(option, NULL); 1308 } else if (kind == VM_LONG_OPTION_WITH_ARGUMENT) { 1309 AddLongFormOption(option, value); 1310 } 1311 /* 1312 * Error missing argument 1313 */ 1314 } else if (!has_arg && (JLI_StrCmp(arg, "--module-path") == 0 || 1315 JLI_StrCmp(arg, "-p") == 0 || 1316 JLI_StrCmp(arg, "--upgrade-module-path") == 0)) { 1317 REPORT_ERROR (has_arg, ARG_ERROR4, arg); 1318 1319 } else if (!has_arg && (IsModuleOption(arg) || IsLongFormModuleOption(arg))) { 1320 REPORT_ERROR (has_arg, ARG_ERROR6, arg); 1321 /* 1322 * The following cases will cause the argument parsing to stop 1323 */ 1324 } else if (JLI_StrCmp(arg, "-help") == 0 || 1325 JLI_StrCmp(arg, "-h") == 0 || 1326 JLI_StrCmp(arg, "-?") == 0) { 1327 printUsage = JNI_TRUE; 1328 return JNI_TRUE; 1329 } else if (JLI_StrCmp(arg, "--help") == 0) { 1330 printUsage = JNI_TRUE; 1331 printTo = USE_STDOUT; 1332 return JNI_TRUE; 1333 } else if (JLI_StrCmp(arg, "-version") == 0) { 1334 printVersion = JNI_TRUE; 1335 return JNI_TRUE; 1336 } else if (JLI_StrCmp(arg, "--version") == 0) { 1337 printVersion = JNI_TRUE; 1338 printTo = USE_STDOUT; 1339 return JNI_TRUE; 1340 } else if (JLI_StrCmp(arg, "-showversion") == 0) { 1341 showVersion = JNI_TRUE; 1342 } else if (JLI_StrCmp(arg, "--show-version") == 0) { 1343 showVersion = JNI_TRUE; 1344 printTo = USE_STDOUT; 1345 } else if (JLI_StrCmp(arg, "--dry-run") == 0) { 1346 dryRun = JNI_TRUE; 1347 } else if (JLI_StrCmp(arg, "-X") == 0) { 1348 printXUsage = JNI_TRUE; 1349 return JNI_TRUE; 1350 } else if (JLI_StrCmp(arg, "--help-extra") == 0) { 1351 printXUsage = JNI_TRUE; 1352 printTo = USE_STDOUT; 1353 return JNI_TRUE; 1354 /* 1355 * The following case checks for -XshowSettings OR -XshowSetting:SUBOPT. 1356 * In the latter case, any SUBOPT value not recognized will default to "all" 1357 */ 1358 } else if (JLI_StrCmp(arg, "-XshowSettings") == 0 || 1359 JLI_StrCCmp(arg, "-XshowSettings:") == 0) { 1360 showSettings = arg; 1361 } else if (JLI_StrCmp(arg, "-Xdiag") == 0) { 1362 AddOption("-Dsun.java.launcher.diag=true", NULL); 1363 } else if (JLI_StrCmp(arg, "--show-module-resolution") == 0) { 1364 AddOption("-Djdk.module.showModuleResolution=true", NULL); 1365 /* 1366 * The following case provide backward compatibility with old-style 1367 * command line options. 1368 */ 1369 } else if (JLI_StrCmp(arg, "-fullversion") == 0) { 1370 JLI_ReportMessage("%s full version \"%s\"", _launcher_name, GetFullVersion()); 1371 return JNI_FALSE; 1372 } else if (JLI_StrCmp(arg, "--full-version") == 0) { 1373 JLI_ShowMessage("%s %s", _launcher_name, GetFullVersion()); 1374 return JNI_FALSE; 1375 } else if (JLI_StrCmp(arg, "-verbosegc") == 0) { 1376 AddOption("-verbose:gc", NULL); 1377 } else if (JLI_StrCmp(arg, "-t") == 0) { 1378 AddOption("-Xt", NULL); 1379 } else if (JLI_StrCmp(arg, "-tm") == 0) { 1380 AddOption("-Xtm", NULL); 1381 } else if (JLI_StrCmp(arg, "-debug") == 0) { 1382 AddOption("-Xdebug", NULL); 1383 } else if (JLI_StrCmp(arg, "-noclassgc") == 0) { 1384 AddOption("-Xnoclassgc", NULL); 1385 } else if (JLI_StrCmp(arg, "-Xfuture") == 0) { 1386 AddOption("-Xverify:all", NULL); 1387 } else if (JLI_StrCmp(arg, "-verify") == 0) { 1388 AddOption("-Xverify:all", NULL); 1389 } else if (JLI_StrCmp(arg, "-verifyremote") == 0) { 1390 AddOption("-Xverify:remote", NULL); 1391 } else if (JLI_StrCmp(arg, "-noverify") == 0) { 1392 AddOption("-Xverify:none", NULL); 1393 } else if (JLI_StrCCmp(arg, "-ss") == 0 || 1394 JLI_StrCCmp(arg, "-oss") == 0 || 1395 JLI_StrCCmp(arg, "-ms") == 0 || 1396 JLI_StrCCmp(arg, "-mx") == 0) { 1397 char *tmp = JLI_MemAlloc(JLI_StrLen(arg) + 6); 1398 sprintf(tmp, "-X%s", arg + 1); /* skip '-' */ 1399 AddOption(tmp, NULL); 1400 } else if (JLI_StrCmp(arg, "-checksource") == 0 || 1401 JLI_StrCmp(arg, "-cs") == 0 || 1402 JLI_StrCmp(arg, "-noasyncgc") == 0) { 1403 /* No longer supported */ 1404 JLI_ReportErrorMessage(ARG_WARN, arg); 1405 } else if (JLI_StrCCmp(arg, "-splash:") == 0) { 1406 ; /* Ignore machine independent options already handled */ 1407 } else if (ProcessPlatformOption(arg)) { 1408 ; /* Processing of platform dependent options */ 1409 } else { 1410 /* java.class.path set on the command line */ 1411 if (JLI_StrCCmp(arg, "-Djava.class.path=") == 0) { 1412 _have_classpath = JNI_TRUE; 1413 } 1414 AddOption(arg, NULL); 1415 } 1416 } 1417 1418 if (*pwhat == NULL && --argc >= 0) { 1419 *pwhat = *argv++; 1420 } 1421 1422 if (*pwhat == NULL) { 1423 /* LM_UNKNOWN okay for options that exit */ 1424 if (!listModules && !describeModule && !validateModules) { 1425 *pret = 1; 1426 } 1427 } else if (mode == LM_UNKNOWN) { 1428 /* default to LM_CLASS if -m, -jar and -cp options are 1429 * not specified */ 1430 if (!_have_classpath) { 1431 SetClassPath("."); 1432 } 1433 mode = LM_CLASS; 1434 } 1435 1436 if (argc >= 0) { 1437 *pargc = argc; 1438 *pargv = argv; 1439 } 1440 1441 *pmode = mode; 1442 1443 return JNI_TRUE; 1444 } 1445 1446 /* 1447 * Initializes the Java Virtual Machine. Also frees options array when 1448 * finished. 1449 */ 1450 static jboolean 1451 InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn) 1452 { 1453 JavaVMInitArgs args; 1454 jint r; 1455 1456 memset(&args, 0, sizeof(args)); 1457 args.version = JNI_VERSION_1_2; 1458 args.nOptions = numOptions; 1459 args.options = options; 1460 args.ignoreUnrecognized = JNI_FALSE; 1461 1462 if (JLI_IsTraceLauncher()) { 1463 int i = 0; 1464 printf("JavaVM args:\n "); 1465 printf("version 0x%08lx, ", (long)args.version); 1466 printf("ignoreUnrecognized is %s, ", 1467 args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE"); 1468 printf("nOptions is %ld\n", (long)args.nOptions); 1469 for (i = 0; i < numOptions; i++) 1470 printf(" option[%2d] = '%s'\n", 1471 i, args.options[i].optionString); 1472 } 1473 1474 r = ifn->CreateJavaVM(pvm, (void **)penv, &args); 1475 JLI_MemFree(options); 1476 return r == JNI_OK; 1477 } 1478 1479 static jclass helperClass = NULL; 1480 1481 jclass 1482 GetLauncherHelperClass(JNIEnv *env) 1483 { 1484 if (helperClass == NULL) { 1485 NULL_CHECK0(helperClass = FindBootStrapClass(env, 1486 "sun/launcher/LauncherHelper")); 1487 } 1488 return helperClass; 1489 } 1490 1491 static jmethodID makePlatformStringMID = NULL; 1492 /* 1493 * Returns a new Java string object for the specified platform string. 1494 */ 1495 static jstring 1496 NewPlatformString(JNIEnv *env, char *s) 1497 { 1498 int len = (int)JLI_StrLen(s); 1499 jbyteArray ary; 1500 jclass cls = GetLauncherHelperClass(env); 1501 NULL_CHECK0(cls); 1502 if (s == NULL) 1503 return 0; 1504 1505 ary = (*env)->NewByteArray(env, len); 1506 if (ary != 0) { 1507 jstring str = 0; 1508 (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s); 1509 if (!(*env)->ExceptionOccurred(env)) { 1510 if (makePlatformStringMID == NULL) { 1511 NULL_CHECK0(makePlatformStringMID = (*env)->GetStaticMethodID(env, 1512 cls, "makePlatformString", "(Z[B)Ljava/lang/String;")); 1513 } 1514 str = (*env)->CallStaticObjectMethod(env, cls, 1515 makePlatformStringMID, USE_STDERR, ary); 1516 (*env)->DeleteLocalRef(env, ary); 1517 return str; 1518 } 1519 } 1520 return 0; 1521 } 1522 1523 /* 1524 * Returns a new array of Java string objects for the specified 1525 * array of platform strings. 1526 */ 1527 jobjectArray 1528 NewPlatformStringArray(JNIEnv *env, char **strv, int strc) 1529 { 1530 jarray cls; 1531 jarray ary; 1532 int i; 1533 1534 NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String")); 1535 NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0)); 1536 CHECK_EXCEPTION_RETURN_VALUE(0); 1537 for (i = 0; i < strc; i++) { 1538 jstring str = NewPlatformString(env, *strv++); 1539 NULL_CHECK0(str); 1540 (*env)->SetObjectArrayElement(env, ary, i, str); 1541 (*env)->DeleteLocalRef(env, str); 1542 } 1543 return ary; 1544 } 1545 1546 /* 1547 * Loads a class and verifies that the main class is present and it is ok to 1548 * call it for more details refer to the java implementation. 1549 */ 1550 static jclass 1551 LoadMainClass(JNIEnv *env, int mode, char *name) 1552 { 1553 jmethodID mid; 1554 jstring str; 1555 jobject result; 1556 jlong start, end; 1557 jclass cls = GetLauncherHelperClass(env); 1558 NULL_CHECK0(cls); 1559 if (JLI_IsTraceLauncher()) { 1560 start = CounterGet(); 1561 } 1562 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls, 1563 "checkAndLoadMain", 1564 "(ZILjava/lang/String;)Ljava/lang/Class;")); 1565 1566 NULL_CHECK0(str = NewPlatformString(env, name)); 1567 NULL_CHECK0(result = (*env)->CallStaticObjectMethod(env, cls, mid, 1568 USE_STDERR, mode, str)); 1569 1570 if (JLI_IsTraceLauncher()) { 1571 end = CounterGet(); 1572 printf("%ld micro seconds to load main class\n", 1573 (long)(jint)Counter2Micros(end-start)); 1574 printf("----%s----\n", JLDEBUG_ENV_ENTRY); 1575 } 1576 1577 return (jclass)result; 1578 } 1579 1580 static jclass 1581 GetApplicationClass(JNIEnv *env) 1582 { 1583 jmethodID mid; 1584 jclass cls = GetLauncherHelperClass(env); 1585 NULL_CHECK0(cls); 1586 NULL_CHECK0(mid = (*env)->GetStaticMethodID(env, cls, 1587 "getApplicationClass", 1588 "()Ljava/lang/Class;")); 1589 1590 return (*env)->CallStaticObjectMethod(env, cls, mid); 1591 } 1592 1593 static char* expandWildcardOnLongOpt(char* arg) { 1594 char *p, *value; 1595 size_t optLen, valueLen; 1596 p = JLI_StrChr(arg, '='); 1597 1598 if (p == NULL || p[1] == '\0') { 1599 JLI_ReportErrorMessage(ARG_ERROR1, arg); 1600 exit(1); 1601 } 1602 p++; 1603 value = (char *) JLI_WildcardExpandClasspath(p); 1604 if (p == value) { 1605 // no wildcard 1606 return arg; 1607 } 1608 1609 optLen = p - arg; 1610 valueLen = JLI_StrLen(value); 1611 p = JLI_MemAlloc(optLen + valueLen + 1); 1612 memcpy(p, arg, optLen); 1613 memcpy(p + optLen, value, valueLen); 1614 p[optLen + valueLen] = '\0'; 1615 return p; 1616 } 1617 1618 /* 1619 * For tools, convert command line args thus: 1620 * javac -cp foo:foo/"*" -J-ms32m ... 1621 * java -ms32m -cp JLI_WildcardExpandClasspath(foo:foo/"*") ... 1622 * 1623 * Takes 4 parameters, and returns the populated arguments 1624 */ 1625 static void 1626 TranslateApplicationArgs(int jargc, const char **jargv, int *pargc, char ***pargv) 1627 { 1628 int argc = *pargc; 1629 char **argv = *pargv; 1630 int nargc = argc + jargc; 1631 char **nargv = JLI_MemAlloc((nargc + 1) * sizeof(char *)); 1632 int i; 1633 1634 *pargc = nargc; 1635 *pargv = nargv; 1636 1637 /* Copy the VM arguments (i.e. prefixed with -J) */ 1638 for (i = 0; i < jargc; i++) { 1639 const char *arg = jargv[i]; 1640 if (arg[0] == '-' && arg[1] == 'J') { 1641 *nargv++ = ((arg + 2) == NULL) ? NULL : JLI_StringDup(arg + 2); 1642 } 1643 } 1644 1645 for (i = 0; i < argc; i++) { 1646 char *arg = argv[i]; 1647 if (arg[0] == '-' && arg[1] == 'J') { 1648 if (arg[2] == '\0') { 1649 JLI_ReportErrorMessage(ARG_ERROR3); 1650 exit(1); 1651 } 1652 *nargv++ = arg + 2; 1653 } 1654 } 1655 1656 /* Copy the rest of the arguments */ 1657 for (i = 0; i < jargc ; i++) { 1658 const char *arg = jargv[i]; 1659 if (arg[0] != '-' || arg[1] != 'J') { 1660 *nargv++ = (arg == NULL) ? NULL : JLI_StringDup(arg); 1661 } 1662 } 1663 for (i = 0; i < argc; i++) { 1664 char *arg = argv[i]; 1665 if (arg[0] == '-') { 1666 if (arg[1] == 'J') 1667 continue; 1668 if (IsWildCardEnabled()) { 1669 if (IsClassPathOption(arg) && i < argc - 1) { 1670 *nargv++ = arg; 1671 *nargv++ = (char *) JLI_WildcardExpandClasspath(argv[i+1]); 1672 i++; 1673 continue; 1674 } 1675 if (JLI_StrCCmp(arg, "--class-path=") == 0) { 1676 *nargv++ = expandWildcardOnLongOpt(arg); 1677 continue; 1678 } 1679 } 1680 } 1681 *nargv++ = arg; 1682 } 1683 *nargv = 0; 1684 } 1685 1686 /* 1687 * For our tools, we try to add 3 VM options: 1688 * -Denv.class.path=<envcp> 1689 * -Dapplication.home=<apphome> 1690 * -Djava.class.path=<appcp> 1691 * <envcp> is the user's setting of CLASSPATH -- for instance the user 1692 * tells javac where to find binary classes through this environment 1693 * variable. Notice that users will be able to compile against our 1694 * tools classes (sun.tools.javac.Main) only if they explicitly add 1695 * tools.jar to CLASSPATH. 1696 * <apphome> is the directory where the application is installed. 1697 * <appcp> is the classpath to where our apps' classfiles are. 1698 */ 1699 static jboolean 1700 AddApplicationOptions(int cpathc, const char **cpathv) 1701 { 1702 char *envcp, *appcp, *apphome; 1703 char home[MAXPATHLEN]; /* application home */ 1704 char separator[] = { PATH_SEPARATOR, '\0' }; 1705 int size, i; 1706 1707 { 1708 const char *s = getenv("CLASSPATH"); 1709 if (s) { 1710 s = (char *) JLI_WildcardExpandClasspath(s); 1711 /* 40 for -Denv.class.path= */ 1712 if (JLI_StrLen(s) + 40 > JLI_StrLen(s)) { // Safeguard from overflow 1713 envcp = (char *)JLI_MemAlloc(JLI_StrLen(s) + 40); 1714 sprintf(envcp, "-Denv.class.path=%s", s); 1715 AddOption(envcp, NULL); 1716 } 1717 } 1718 } 1719 1720 if (!GetApplicationHome(home, sizeof(home))) { 1721 JLI_ReportErrorMessage(CFG_ERROR5); 1722 return JNI_FALSE; 1723 } 1724 1725 /* 40 for '-Dapplication.home=' */ 1726 apphome = (char *)JLI_MemAlloc(JLI_StrLen(home) + 40); 1727 sprintf(apphome, "-Dapplication.home=%s", home); 1728 AddOption(apphome, NULL); 1729 1730 /* How big is the application's classpath? */ 1731 if (cpathc > 0) { 1732 size = 40; /* 40: "-Djava.class.path=" */ 1733 for (i = 0; i < cpathc; i++) { 1734 size += (int)JLI_StrLen(home) + (int)JLI_StrLen(cpathv[i]) + 1; /* 1: separator */ 1735 } 1736 appcp = (char *)JLI_MemAlloc(size + 1); 1737 JLI_StrCpy(appcp, "-Djava.class.path="); 1738 for (i = 0; i < cpathc; i++) { 1739 JLI_StrCat(appcp, home); /* c:\program files\myapp */ 1740 JLI_StrCat(appcp, cpathv[i]); /* \lib\myapp.jar */ 1741 JLI_StrCat(appcp, separator); /* ; */ 1742 } 1743 appcp[JLI_StrLen(appcp)-1] = '\0'; /* remove trailing path separator */ 1744 AddOption(appcp, NULL); 1745 } 1746 return JNI_TRUE; 1747 } 1748 1749 /* 1750 * inject the -Dsun.java.command pseudo property into the args structure 1751 * this pseudo property is used in the HotSpot VM to expose the 1752 * Java class name and arguments to the main method to the VM. The 1753 * HotSpot VM uses this pseudo property to store the Java class name 1754 * (or jar file name) and the arguments to the class's main method 1755 * to the instrumentation memory region. The sun.java.command pseudo 1756 * property is not exported by HotSpot to the Java layer. 1757 */ 1758 void 1759 SetJavaCommandLineProp(char *what, int argc, char **argv) 1760 { 1761 1762 int i = 0; 1763 size_t len = 0; 1764 char* javaCommand = NULL; 1765 char* dashDstr = "-Dsun.java.command="; 1766 1767 if (what == NULL) { 1768 /* unexpected, one of these should be set. just return without 1769 * setting the property 1770 */ 1771 return; 1772 } 1773 1774 /* determine the amount of memory to allocate assuming 1775 * the individual components will be space separated 1776 */ 1777 len = JLI_StrLen(what); 1778 for (i = 0; i < argc; i++) { 1779 len += JLI_StrLen(argv[i]) + 1; 1780 } 1781 1782 /* allocate the memory */ 1783 javaCommand = (char*) JLI_MemAlloc(len + JLI_StrLen(dashDstr) + 1); 1784 1785 /* build the -D string */ 1786 *javaCommand = '\0'; 1787 JLI_StrCat(javaCommand, dashDstr); 1788 JLI_StrCat(javaCommand, what); 1789 1790 for (i = 0; i < argc; i++) { 1791 /* the components of the string are space separated. In 1792 * the case of embedded white space, the relationship of 1793 * the white space separated components to their true 1794 * positional arguments will be ambiguous. This issue may 1795 * be addressed in a future release. 1796 */ 1797 JLI_StrCat(javaCommand, " "); 1798 JLI_StrCat(javaCommand, argv[i]); 1799 } 1800 1801 AddOption(javaCommand, NULL); 1802 } 1803 1804 /* 1805 * JVM would like to know if it's created by a standard Sun launcher, or by 1806 * user native application, the following property indicates the former. 1807 */ 1808 void 1809 SetJavaLauncherProp() { 1810 AddOption("-Dsun.java.launcher=SUN_STANDARD", NULL); 1811 } 1812 1813 /* 1814 * Prints the version information from the java.version and other properties. 1815 */ 1816 static void 1817 PrintJavaVersion(JNIEnv *env, jboolean extraLF) 1818 { 1819 jclass ver; 1820 jmethodID print; 1821 1822 NULL_CHECK(ver = FindBootStrapClass(env, "java/lang/VersionProps")); 1823 NULL_CHECK(print = (*env)->GetStaticMethodID(env, 1824 ver, 1825 (extraLF == JNI_TRUE) ? "println" : "print", 1826 "(Z)V" 1827 ) 1828 ); 1829 1830 (*env)->CallStaticVoidMethod(env, ver, print, printTo); 1831 } 1832 1833 /* 1834 * Prints all the Java settings, see the java implementation for more details. 1835 */ 1836 static void 1837 ShowSettings(JNIEnv *env, char *optString) 1838 { 1839 jmethodID showSettingsID; 1840 jstring joptString; 1841 jclass cls = GetLauncherHelperClass(env); 1842 NULL_CHECK(cls); 1843 NULL_CHECK(showSettingsID = (*env)->GetStaticMethodID(env, cls, 1844 "showSettings", "(ZLjava/lang/String;JJJ)V")); 1845 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString)); 1846 (*env)->CallStaticVoidMethod(env, cls, showSettingsID, 1847 USE_STDERR, 1848 joptString, 1849 (jlong)initialHeapSize, 1850 (jlong)maxHeapSize, 1851 (jlong)threadStackSize); 1852 } 1853 1854 /** 1855 * Show resolved modules 1856 */ 1857 static void 1858 ShowResolvedModules(JNIEnv *env) 1859 { 1860 jmethodID showResolvedModulesID; 1861 jclass cls = GetLauncherHelperClass(env); 1862 NULL_CHECK(cls); 1863 NULL_CHECK(showResolvedModulesID = (*env)->GetStaticMethodID(env, cls, 1864 "showResolvedModules", "()V")); 1865 (*env)->CallStaticVoidMethod(env, cls, showResolvedModulesID); 1866 } 1867 1868 /** 1869 * List observable modules 1870 */ 1871 static void 1872 ListModules(JNIEnv *env) 1873 { 1874 jmethodID listModulesID; 1875 jclass cls = GetLauncherHelperClass(env); 1876 NULL_CHECK(cls); 1877 NULL_CHECK(listModulesID = (*env)->GetStaticMethodID(env, cls, 1878 "listModules", "()V")); 1879 (*env)->CallStaticVoidMethod(env, cls, listModulesID); 1880 } 1881 1882 /** 1883 * Describe a module 1884 */ 1885 static void 1886 DescribeModule(JNIEnv *env, char *optString) 1887 { 1888 jmethodID describeModuleID; 1889 jstring joptString = NULL; 1890 jclass cls = GetLauncherHelperClass(env); 1891 NULL_CHECK(cls); 1892 NULL_CHECK(describeModuleID = (*env)->GetStaticMethodID(env, cls, 1893 "describeModule", "(Ljava/lang/String;)V")); 1894 NULL_CHECK(joptString = (*env)->NewStringUTF(env, optString)); 1895 (*env)->CallStaticVoidMethod(env, cls, describeModuleID, joptString); 1896 } 1897 1898 /** 1899 * Validate modules 1900 */ 1901 static jboolean 1902 ValidateModules(JNIEnv *env) 1903 { 1904 jmethodID validateModulesID; 1905 jclass cls = GetLauncherHelperClass(env); 1906 NULL_CHECK_RETURN_VALUE(cls, JNI_FALSE); 1907 validateModulesID = (*env)->GetStaticMethodID(env, cls, "validateModules", "()Z"); 1908 NULL_CHECK_RETURN_VALUE(cls, JNI_FALSE); 1909 return (*env)->CallStaticBooleanMethod(env, cls, validateModulesID); 1910 } 1911 1912 /* 1913 * Prints default usage or the Xusage message, see sun.launcher.LauncherHelper.java 1914 */ 1915 static void 1916 PrintUsage(JNIEnv* env, jboolean doXUsage) 1917 { 1918 jmethodID initHelp, vmSelect, vmSynonym, printHelp, printXUsageMessage; 1919 jstring jprogname, vm1, vm2; 1920 int i; 1921 jclass cls = GetLauncherHelperClass(env); 1922 NULL_CHECK(cls); 1923 if (doXUsage) { 1924 NULL_CHECK(printXUsageMessage = (*env)->GetStaticMethodID(env, cls, 1925 "printXUsageMessage", "(Z)V")); 1926 (*env)->CallStaticVoidMethod(env, cls, printXUsageMessage, printTo); 1927 } else { 1928 NULL_CHECK(initHelp = (*env)->GetStaticMethodID(env, cls, 1929 "initHelpMessage", "(Ljava/lang/String;)V")); 1930 1931 NULL_CHECK(vmSelect = (*env)->GetStaticMethodID(env, cls, "appendVmSelectMessage", 1932 "(Ljava/lang/String;Ljava/lang/String;)V")); 1933 1934 NULL_CHECK(vmSynonym = (*env)->GetStaticMethodID(env, cls, 1935 "appendVmSynonymMessage", 1936 "(Ljava/lang/String;Ljava/lang/String;)V")); 1937 1938 NULL_CHECK(printHelp = (*env)->GetStaticMethodID(env, cls, 1939 "printHelpMessage", "(Z)V")); 1940 1941 NULL_CHECK(jprogname = (*env)->NewStringUTF(env, _program_name)); 1942 1943 /* Initialize the usage message with the usual preamble */ 1944 (*env)->CallStaticVoidMethod(env, cls, initHelp, jprogname); 1945 CHECK_EXCEPTION_RETURN(); 1946 1947 1948 /* Assemble the other variant part of the usage */ 1949 for (i=1; i<knownVMsCount; i++) { 1950 if (knownVMs[i].flag == VM_KNOWN) { 1951 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name)); 1952 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].name+1)); 1953 (*env)->CallStaticVoidMethod(env, cls, vmSelect, vm1, vm2); 1954 CHECK_EXCEPTION_RETURN(); 1955 } 1956 } 1957 for (i=1; i<knownVMsCount; i++) { 1958 if (knownVMs[i].flag == VM_ALIASED_TO) { 1959 NULL_CHECK(vm1 = (*env)->NewStringUTF(env, knownVMs[i].name)); 1960 NULL_CHECK(vm2 = (*env)->NewStringUTF(env, knownVMs[i].alias+1)); 1961 (*env)->CallStaticVoidMethod(env, cls, vmSynonym, vm1, vm2); 1962 CHECK_EXCEPTION_RETURN(); 1963 } 1964 } 1965 1966 /* Complete the usage message and print to stderr*/ 1967 (*env)->CallStaticVoidMethod(env, cls, printHelp, printTo); 1968 } 1969 return; 1970 } 1971 1972 /* 1973 * Read the jvm.cfg file and fill the knownJVMs[] array. 1974 * 1975 * The functionality of the jvm.cfg file is subject to change without 1976 * notice and the mechanism will be removed in the future. 1977 * 1978 * The lexical structure of the jvm.cfg file is as follows: 1979 * 1980 * jvmcfg := { vmLine } 1981 * vmLine := knownLine 1982 * | aliasLine 1983 * | warnLine 1984 * | ignoreLine 1985 * | errorLine 1986 * | predicateLine 1987 * | commentLine 1988 * knownLine := flag "KNOWN" EOL 1989 * warnLine := flag "WARN" EOL 1990 * ignoreLine := flag "IGNORE" EOL 1991 * errorLine := flag "ERROR" EOL 1992 * aliasLine := flag "ALIASED_TO" flag EOL 1993 * predicateLine := flag "IF_SERVER_CLASS" flag EOL 1994 * commentLine := "#" text EOL 1995 * flag := "-" identifier 1996 * 1997 * The semantics are that when someone specifies a flag on the command line: 1998 * - if the flag appears on a knownLine, then the identifier is used as 1999 * the name of the directory holding the JVM library (the name of the JVM). 2000 * - if the flag appears as the first flag on an aliasLine, the identifier 2001 * of the second flag is used as the name of the JVM. 2002 * - if the flag appears on a warnLine, the identifier is used as the 2003 * name of the JVM, but a warning is generated. 2004 * - if the flag appears on an ignoreLine, the identifier is recognized as the 2005 * name of a JVM, but the identifier is ignored and the default vm used 2006 * - if the flag appears on an errorLine, an error is generated. 2007 * - if the flag appears as the first flag on a predicateLine, and 2008 * the machine on which you are running passes the predicate indicated, 2009 * then the identifier of the second flag is used as the name of the JVM, 2010 * otherwise the identifier of the first flag is used as the name of the JVM. 2011 * If no flag is given on the command line, the first vmLine of the jvm.cfg 2012 * file determines the name of the JVM. 2013 * PredicateLines are only interpreted on first vmLine of a jvm.cfg file, 2014 * since they only make sense if someone hasn't specified the name of the 2015 * JVM on the command line. 2016 * 2017 * The intent of the jvm.cfg file is to allow several JVM libraries to 2018 * be installed in different subdirectories of a single JRE installation, 2019 * for space-savings and convenience in testing. 2020 * The intent is explicitly not to provide a full aliasing or predicate 2021 * mechanism. 2022 */ 2023 jint 2024 ReadKnownVMs(const char *jvmCfgName, jboolean speculative) 2025 { 2026 FILE *jvmCfg; 2027 char line[MAXPATHLEN+20]; 2028 int cnt = 0; 2029 int lineno = 0; 2030 jlong start, end; 2031 int vmType; 2032 char *tmpPtr; 2033 char *altVMName = NULL; 2034 char *serverClassVMName = NULL; 2035 static char *whiteSpace = " \t"; 2036 if (JLI_IsTraceLauncher()) { 2037 start = CounterGet(); 2038 } 2039 2040 jvmCfg = fopen(jvmCfgName, "r"); 2041 if (jvmCfg == NULL) { 2042 if (!speculative) { 2043 JLI_ReportErrorMessage(CFG_ERROR6, jvmCfgName); 2044 exit(1); 2045 } else { 2046 return -1; 2047 } 2048 } 2049 while (fgets(line, sizeof(line), jvmCfg) != NULL) { 2050 vmType = VM_UNKNOWN; 2051 lineno++; 2052 if (line[0] == '#') 2053 continue; 2054 if (line[0] != '-') { 2055 JLI_ReportErrorMessage(CFG_WARN2, lineno, jvmCfgName); 2056 } 2057 if (cnt >= knownVMsLimit) { 2058 GrowKnownVMs(cnt); 2059 } 2060 line[JLI_StrLen(line)-1] = '\0'; /* remove trailing newline */ 2061 tmpPtr = line + JLI_StrCSpn(line, whiteSpace); 2062 if (*tmpPtr == 0) { 2063 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName); 2064 } else { 2065 /* Null-terminate this string for JLI_StringDup below */ 2066 *tmpPtr++ = 0; 2067 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace); 2068 if (*tmpPtr == 0) { 2069 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName); 2070 } else { 2071 if (!JLI_StrCCmp(tmpPtr, "KNOWN")) { 2072 vmType = VM_KNOWN; 2073 } else if (!JLI_StrCCmp(tmpPtr, "ALIASED_TO")) { 2074 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace); 2075 if (*tmpPtr != 0) { 2076 tmpPtr += JLI_StrSpn(tmpPtr, whiteSpace); 2077 } 2078 if (*tmpPtr == 0) { 2079 JLI_ReportErrorMessage(CFG_WARN3, lineno, jvmCfgName); 2080 } else { 2081 /* Null terminate altVMName */ 2082 altVMName = tmpPtr; 2083 tmpPtr += JLI_StrCSpn(tmpPtr, whiteSpace); 2084 *tmpPtr = 0; 2085 vmType = VM_ALIASED_TO; 2086 } 2087 } else if (!JLI_StrCCmp(tmpPtr, "WARN")) { 2088 vmType = VM_WARN; 2089 } else if (!JLI_StrCCmp(tmpPtr, "IGNORE")) { 2090 vmType = VM_IGNORE; 2091 } else if (!JLI_StrCCmp(tmpPtr, "ERROR")) { 2092 vmType = VM_ERROR; 2093 } else if (!JLI_StrCCmp(tmpPtr, "IF_SERVER_CLASS")) { 2094 /* ignored */ 2095 } else { 2096 JLI_ReportErrorMessage(CFG_WARN5, lineno, &jvmCfgName[0]); 2097 vmType = VM_KNOWN; 2098 } 2099 } 2100 } 2101 2102 JLI_TraceLauncher("jvm.cfg[%d] = ->%s<-\n", cnt, line); 2103 if (vmType != VM_UNKNOWN) { 2104 knownVMs[cnt].name = JLI_StringDup(line); 2105 knownVMs[cnt].flag = vmType; 2106 switch (vmType) { 2107 default: 2108 break; 2109 case VM_ALIASED_TO: 2110 knownVMs[cnt].alias = JLI_StringDup(altVMName); 2111 JLI_TraceLauncher(" name: %s vmType: %s alias: %s\n", 2112 knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias); 2113 break; 2114 } 2115 cnt++; 2116 } 2117 } 2118 fclose(jvmCfg); 2119 knownVMsCount = cnt; 2120 2121 if (JLI_IsTraceLauncher()) { 2122 end = CounterGet(); 2123 printf("%ld micro seconds to parse jvm.cfg\n", 2124 (long)(jint)Counter2Micros(end-start)); 2125 } 2126 2127 return cnt; 2128 } 2129 2130 2131 static void 2132 GrowKnownVMs(int minimum) 2133 { 2134 struct vmdesc* newKnownVMs; 2135 int newMax; 2136 2137 newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit)); 2138 if (newMax <= minimum) { 2139 newMax = minimum; 2140 } 2141 newKnownVMs = (struct vmdesc*) JLI_MemAlloc(newMax * sizeof(struct vmdesc)); 2142 if (knownVMs != NULL) { 2143 memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc)); 2144 } 2145 JLI_MemFree(knownVMs); 2146 knownVMs = newKnownVMs; 2147 knownVMsLimit = newMax; 2148 } 2149 2150 2151 /* Returns index of VM or -1 if not found */ 2152 static int 2153 KnownVMIndex(const char* name) 2154 { 2155 int i; 2156 if (JLI_StrCCmp(name, "-J") == 0) name += 2; 2157 for (i = 0; i < knownVMsCount; i++) { 2158 if (!JLI_StrCmp(name, knownVMs[i].name)) { 2159 return i; 2160 } 2161 } 2162 return -1; 2163 } 2164 2165 static void 2166 FreeKnownVMs() 2167 { 2168 int i; 2169 for (i = 0; i < knownVMsCount; i++) { 2170 JLI_MemFree(knownVMs[i].name); 2171 knownVMs[i].name = NULL; 2172 } 2173 JLI_MemFree(knownVMs); 2174 } 2175 2176 /* 2177 * Displays the splash screen according to the jar file name 2178 * and image file names stored in environment variables 2179 */ 2180 void 2181 ShowSplashScreen() 2182 { 2183 const char *jar_name = getenv(SPLASH_JAR_ENV_ENTRY); 2184 const char *file_name = getenv(SPLASH_FILE_ENV_ENTRY); 2185 int data_size; 2186 void *image_data = NULL; 2187 float scale_factor = 1; 2188 char *scaled_splash_name = NULL; 2189 jboolean isImageScaled = JNI_FALSE; 2190 size_t maxScaledImgNameLength = 0; 2191 if (file_name == NULL){ 2192 return; 2193 } 2194 maxScaledImgNameLength = DoSplashGetScaledImgNameMaxPstfixLen(file_name); 2195 2196 scaled_splash_name = JLI_MemAlloc( 2197 maxScaledImgNameLength * sizeof(char)); 2198 isImageScaled = DoSplashGetScaledImageName(jar_name, file_name, 2199 &scale_factor, 2200 scaled_splash_name, maxScaledImgNameLength); 2201 if (jar_name) { 2202 2203 if (isImageScaled) { 2204 image_data = JLI_JarUnpackFile( 2205 jar_name, scaled_splash_name, &data_size); 2206 } 2207 2208 if (!image_data) { 2209 scale_factor = 1; 2210 image_data = JLI_JarUnpackFile( 2211 jar_name, file_name, &data_size); 2212 } 2213 if (image_data) { 2214 DoSplashInit(); 2215 DoSplashSetScaleFactor(scale_factor); 2216 DoSplashLoadMemory(image_data, data_size); 2217 JLI_MemFree(image_data); 2218 } 2219 } else { 2220 DoSplashInit(); 2221 if (isImageScaled) { 2222 DoSplashSetScaleFactor(scale_factor); 2223 DoSplashLoadFile(scaled_splash_name); 2224 } else { 2225 DoSplashLoadFile(file_name); 2226 } 2227 } 2228 JLI_MemFree(scaled_splash_name); 2229 2230 DoSplashSetFileJarName(file_name, jar_name); 2231 2232 /* 2233 * Done with all command line processing and potential re-execs so 2234 * clean up the environment. 2235 */ 2236 (void)UnsetEnv(ENV_ENTRY); 2237 (void)UnsetEnv(SPLASH_FILE_ENV_ENTRY); 2238 (void)UnsetEnv(SPLASH_JAR_ENV_ENTRY); 2239 2240 JLI_MemFree(splash_jar_entry); 2241 JLI_MemFree(splash_file_entry); 2242 2243 } 2244 2245 const char* 2246 GetFullVersion() 2247 { 2248 return _fVersion; 2249 } 2250 2251 const char* 2252 GetProgramName() 2253 { 2254 return _program_name; 2255 } 2256 2257 const char* 2258 GetLauncherName() 2259 { 2260 return _launcher_name; 2261 } 2262 2263 jboolean 2264 IsJavaArgs() 2265 { 2266 return _is_java_args; 2267 } 2268 2269 static jboolean 2270 IsWildCardEnabled() 2271 { 2272 return _wc_enabled; 2273 } 2274 2275 int 2276 ContinueInNewThread(InvocationFunctions* ifn, jlong threadStackSize, 2277 int argc, char **argv, 2278 int mode, char *what, int ret) 2279 { 2280 2281 /* 2282 * If user doesn't specify stack size, check if VM has a preference. 2283 * Note that HotSpot no longer supports JNI_VERSION_1_1 but it will 2284 * return its default stack size through the init args structure. 2285 */ 2286 if (threadStackSize == 0) { 2287 struct JDK1_1InitArgs args1_1; 2288 memset((void*)&args1_1, 0, sizeof(args1_1)); 2289 args1_1.version = JNI_VERSION_1_1; 2290 ifn->GetDefaultJavaVMInitArgs(&args1_1); /* ignore return value */ 2291 if (args1_1.javaStackSize > 0) { 2292 threadStackSize = args1_1.javaStackSize; 2293 } 2294 } 2295 2296 { /* Create a new thread to create JVM and invoke main method */ 2297 JavaMainArgs args; 2298 int rslt; 2299 2300 args.argc = argc; 2301 args.argv = argv; 2302 args.mode = mode; 2303 args.what = what; 2304 args.ifn = *ifn; 2305 2306 rslt = ContinueInNewThread0(JavaMain, threadStackSize, (void*)&args); 2307 /* If the caller has deemed there is an error we 2308 * simply return that, otherwise we return the value of 2309 * the callee 2310 */ 2311 return (ret != 0) ? ret : rslt; 2312 } 2313 } 2314 2315 static void 2316 DumpState() 2317 { 2318 if (!JLI_IsTraceLauncher()) return ; 2319 printf("Launcher state:\n"); 2320 printf("\tFirst application arg index: %d\n", JLI_GetAppArgIndex()); 2321 printf("\tdebug:%s\n", (JLI_IsTraceLauncher() == JNI_TRUE) ? "on" : "off"); 2322 printf("\tjavargs:%s\n", (_is_java_args == JNI_TRUE) ? "on" : "off"); 2323 printf("\tprogram name:%s\n", GetProgramName()); 2324 printf("\tlauncher name:%s\n", GetLauncherName()); 2325 printf("\tjavaw:%s\n", (IsJavaw() == JNI_TRUE) ? "on" : "off"); 2326 printf("\tfullversion:%s\n", GetFullVersion()); 2327 } 2328 2329 /* 2330 * A utility procedure to always print to stderr 2331 */ 2332 void 2333 JLI_ReportMessage(const char* fmt, ...) 2334 { 2335 va_list vl; 2336 va_start(vl, fmt); 2337 vfprintf(stderr, fmt, vl); 2338 fprintf(stderr, "\n"); 2339 va_end(vl); 2340 } 2341 2342 /* 2343 * A utility procedure to always print to stdout 2344 */ 2345 void 2346 JLI_ShowMessage(const char* fmt, ...) 2347 { 2348 va_list vl; 2349 va_start(vl, fmt); 2350 vfprintf(stdout, fmt, vl); 2351 fprintf(stdout, "\n"); 2352 va_end(vl); 2353 }