1 /* 2 * Copyright (c) 1999, 2010, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 /* 26 * Gamma (Hotspot internal engineering test) launcher based on 1.6.0-b28 JDK, 27 * search "GAMMA" for gamma specific changes. 28 * 29 * GAMMA: gamma launcher is much simpler than regular java launcher in that 30 * JVM is either statically linked in or it is installed in the 31 * same directory where the launcher exists, so we don't have to 32 * worry about choosing the right JVM based on command line flag, jar 33 * file and/or ergonomics. Intead of removing unused logic from source 34 * they are commented out with #ifndef GAMMA, hopefully it'll be easier 35 * to maintain this file in sync with regular JDK launcher. 36 */ 37 38 /* 39 * Shared source for 'java' command line tool. 40 * 41 * If JAVA_ARGS is defined, then acts as a launcher for applications. For 42 * instance, the JDK command line tools such as javac and javadoc (see 43 * makefiles for more details) are built with this program. Any arguments 44 * prefixed with '-J' will be passed directly to the 'java' command. 45 */ 46 47 #ifdef GAMMA 48 # ifdef JAVA_ARGS 49 # error Do NOT define JAVA_ARGS when building gamma launcher 50 # endif 51 # if !defined(LINK_INTO_AOUT) && !defined(LINK_INTO_LIBJVM) 52 # error Either LINK_INTO_AOUT or LINK_INTO_LIBJVM must be defined 53 # endif 54 #endif 55 56 /* 57 * One job of the launcher is to remove command line options which the 58 * vm does not understand and will not process. These options include 59 * options which select which style of vm is run (e.g. -client and 60 * -server) as well as options which select the data model to use. 61 * Additionally, for tools which invoke an underlying vm "-J-foo" 62 * options are turned into "-foo" options to the vm. This option 63 * filtering is handled in a number of places in the launcher, some of 64 * it in machine-dependent code. In this file, the function 65 * CheckJVMType removes vm style options and TranslateDashJArgs 66 * removes "-J" prefixes. On unix platforms, the 67 * CreateExecutionEnvironment function from the unix java_md.c file 68 * processes and removes -d<n> options. However, in case 69 * CreateExecutionEnvironment does not need to exec because 70 * LD_LIBRARY_PATH is set acceptably and the data model does not need 71 * to be changed, ParseArguments will screen out the redundant -d<n> 72 * options and prevent them from being passed to the vm; this is done 73 * by using the machine-dependent call 74 * RemovableMachineDependentOption. 75 */ 76 77 #include <stdio.h> 78 #include <stdlib.h> 79 #include <string.h> 80 81 #include <jni.h> 82 #include "java.h" 83 84 #ifndef GAMMA 85 #include "manifest_info.h" 86 #include "version_comp.h" 87 #endif 88 89 #ifndef FULL_VERSION 90 #define FULL_VERSION JDK_MAJOR_VERSION "." JDK_MINOR_VERSION 91 #endif 92 93 /* 94 * The following environment variable is used to influence the behavior 95 * of the jre exec'd through the SelectVersion routine. The command line 96 * options which specify the version are not passed to the exec'd version, 97 * because that jre may be an older version which wouldn't recognize them. 98 * This environment variable is known to this (and later) version and serves 99 * to suppress the version selection code. This is not only for efficiency, 100 * but also for correctness, since any command line options have been 101 * removed which would cause any value found in the manifest to be used. 102 * This would be incorrect because the command line options are defined 103 * to take precedence. 104 * 105 * The value associated with this environment variable is the MainClass 106 * name from within the executable jar file (if any). This is strictly a 107 * performance enhancement to avoid re-reading the jar file manifest. 108 * 109 * A NOTE TO DEVELOPERS: For performance reasons it is important that 110 * the program image remain relatively small until after SelectVersion 111 * CreateExecutionEnvironment have finished their possibly recursive 112 * processing. Watch everything, but resist all temptations to use Java 113 * interfaces. 114 */ 115 #define ENV_ENTRY "_JAVA_VERSION_SET" 116 117 static jboolean printVersion = JNI_FALSE; /* print and exit */ 118 static jboolean showVersion = JNI_FALSE; /* print but continue */ 119 static char *progname; 120 jboolean _launcher_debug = JNI_FALSE; 121 122 /* 123 * List of VM options to be specified when the VM is created. 124 */ 125 static JavaVMOption *options; 126 static int numOptions, maxOptions; 127 128 /* 129 * Prototypes for functions internal to launcher. 130 */ 131 static void AddOption(char *str, void *info); 132 static void SetClassPath(char *s); 133 static void SelectVersion(int argc, char **argv, char **main_class); 134 static jboolean ParseArguments(int *pargc, char ***pargv, char **pjarfile, 135 char **pclassname, int *pret); 136 static jboolean InitializeJVM(JavaVM **pvm, JNIEnv **penv, 137 InvocationFunctions *ifn); 138 static jstring NewPlatformString(JNIEnv *env, char *s); 139 static jobjectArray NewPlatformStringArray(JNIEnv *env, char **strv, int strc); 140 static jclass LoadClass(JNIEnv *env, char *name); 141 static jstring GetMainClassName(JNIEnv *env, char *jarname); 142 static void SetJavaCommandLineProp(char* classname, char* jarfile, int argc, char** argv); 143 #ifdef GAMMA 144 static void SetJavaLauncherProp(void); 145 #endif 146 147 #ifdef JAVA_ARGS 148 static void TranslateDashJArgs(int *pargc, char ***pargv); 149 static jboolean AddApplicationOptions(void); 150 #endif 151 152 static void PrintJavaVersion(JNIEnv *env); 153 static void PrintUsage(void); 154 static jint PrintXUsage(void); 155 156 static void SetPaths(int argc, char **argv); 157 158 /* Maximum supported entries from jvm.cfg. */ 159 #define INIT_MAX_KNOWN_VMS 10 160 /* Values for vmdesc.flag */ 161 #define VM_UNKNOWN -1 162 #define VM_KNOWN 0 163 #define VM_ALIASED_TO 1 164 #define VM_WARN 2 165 #define VM_ERROR 3 166 #define VM_IF_SERVER_CLASS 4 167 #define VM_IGNORE 5 168 struct vmdesc { 169 char *name; 170 int flag; 171 char *alias; 172 char *server_class; 173 }; 174 static struct vmdesc *knownVMs = NULL; 175 static int knownVMsCount = 0; 176 static int knownVMsLimit = 0; 177 178 static void GrowKnownVMs(); 179 static int KnownVMIndex(const char* name); 180 static void FreeKnownVMs(); 181 182 jboolean ServerClassMachine(); 183 184 /* flag which if set suppresses error messages from the launcher */ 185 static int noExitErrorMessage = 0; 186 187 /* 188 * Entry point. 189 */ 190 int 191 main(int argc, char ** argv) 192 { 193 JavaVM *vm = 0; 194 JNIEnv *env = 0; 195 char *jarfile = 0; 196 char *classname = 0; 197 char *s = 0; 198 char *main_class = NULL; 199 jstring mainClassName; 200 jclass mainClass; 201 jmethodID mainID; 202 jobjectArray mainArgs; 203 int ret; 204 InvocationFunctions ifn; 205 jlong start, end; 206 char jrepath[MAXPATHLEN], jvmpath[MAXPATHLEN]; 207 char ** original_argv = argv; 208 209 /* 210 * Error message to print or display; by default the message will 211 * only be displayed in a window. 212 */ 213 char * message = "Fatal exception occurred. Program will exit."; 214 jboolean messageDest = JNI_FALSE; 215 216 if (getenv("_JAVA_LAUNCHER_DEBUG") != 0) { 217 _launcher_debug = JNI_TRUE; 218 printf("----_JAVA_LAUNCHER_DEBUG----\n"); 219 } 220 221 #ifndef GAMMA 222 /* 223 * Make sure the specified version of the JRE is running. 224 * 225 * There are three things to note about the SelectVersion() routine: 226 * 1) If the version running isn't correct, this routine doesn't 227 * return (either the correct version has been exec'd or an error 228 * was issued). 229 * 2) Argc and Argv in this scope are *not* altered by this routine. 230 * It is the responsibility of subsequent code to ignore the 231 * arguments handled by this routine. 232 * 3) As a side-effect, the variable "main_class" is guaranteed to 233 * be set (if it should ever be set). This isn't exactly the 234 * poster child for structured programming, but it is a small 235 * price to pay for not processing a jar file operand twice. 236 * (Note: This side effect has been disabled. See comment on 237 * bugid 5030265 below.) 238 */ 239 SelectVersion(argc, argv, &main_class); 240 #endif /* ifndef GAMMA */ 241 242 /* copy original argv */ 243 { 244 int i; 245 original_argv = (char**)MemAlloc(sizeof(char*)*(argc+1)); 246 for(i = 0; i < argc+1; i++) 247 original_argv[i] = argv[i]; 248 } 249 250 CreateExecutionEnvironment(&argc, &argv, 251 jrepath, sizeof(jrepath), 252 jvmpath, sizeof(jvmpath), 253 original_argv); 254 ifn.CreateJavaVM = 0; 255 ifn.GetDefaultJavaVMInitArgs = 0; 256 257 if (_launcher_debug) 258 start = CounterGet(); 259 if (!LoadJavaVM(jvmpath, &ifn)) { 260 exit(6); 261 } 262 if (_launcher_debug) { 263 end = CounterGet(); 264 printf("%ld micro seconds to LoadJavaVM\n", 265 (long)(jint)Counter2Micros(end-start)); 266 } 267 268 #ifdef JAVA_ARGS /* javac, jar and friends. */ 269 progname = "java"; 270 #else /* java, oldjava, javaw and friends */ 271 #ifdef PROGNAME 272 progname = PROGNAME; 273 #else 274 progname = *argv; 275 if ((s = strrchr(progname, FILE_SEPARATOR)) != 0) { 276 progname = s + 1; 277 } 278 #endif /* PROGNAME */ 279 #endif /* JAVA_ARGS */ 280 ++argv; 281 --argc; 282 283 #ifdef JAVA_ARGS 284 /* Preprocess wrapper arguments */ 285 TranslateDashJArgs(&argc, &argv); 286 if (!AddApplicationOptions()) { 287 exit(1); 288 } 289 #endif 290 291 /* Set default CLASSPATH */ 292 if ((s = getenv("CLASSPATH")) == 0) { 293 s = "."; 294 } 295 #ifndef JAVA_ARGS 296 SetClassPath(s); 297 #endif 298 299 /* 300 * Parse command line options; if the return value of 301 * ParseArguments is false, the program should exit. 302 */ 303 if (!ParseArguments(&argc, &argv, &jarfile, &classname, &ret)) { 304 exit(ret); 305 } 306 307 /* Override class path if -jar flag was specified */ 308 if (jarfile != 0) { 309 SetClassPath(jarfile); 310 } 311 312 /* set the -Dsun.java.command pseudo property */ 313 SetJavaCommandLineProp(classname, jarfile, argc, argv); 314 315 #ifdef GAMMA 316 /* Set the -Dsun.java.launcher pseudo property */ 317 SetJavaLauncherProp(); 318 #endif 319 320 /* 321 * Done with all command line processing and potential re-execs so 322 * clean up the environment. 323 */ 324 (void)UnsetEnv(ENV_ENTRY); 325 326 /* Initialize the virtual machine */ 327 328 if (_launcher_debug) 329 start = CounterGet(); 330 if (!InitializeJVM(&vm, &env, &ifn)) { 331 ReportErrorMessage("Could not create the Java virtual machine.", 332 JNI_TRUE); 333 exit(1); 334 } 335 336 if (printVersion || showVersion) { 337 PrintJavaVersion(env); 338 if ((*env)->ExceptionOccurred(env)) { 339 ReportExceptionDescription(env); 340 goto leave; 341 } 342 if (printVersion) { 343 ret = 0; 344 message = NULL; 345 goto leave; 346 } 347 if (showVersion) { 348 fprintf(stderr, "\n"); 349 } 350 } 351 352 /* If the user specified neither a class name nor a JAR file */ 353 if (jarfile == 0 && classname == 0) { 354 PrintUsage(); 355 message = NULL; 356 goto leave; 357 } 358 359 #ifndef GAMMA 360 FreeKnownVMs(); /* after last possible PrintUsage() */ 361 #endif 362 363 if (_launcher_debug) { 364 end = CounterGet(); 365 printf("%ld micro seconds to InitializeJVM\n", 366 (long)(jint)Counter2Micros(end-start)); 367 } 368 369 /* At this stage, argc/argv have the applications' arguments */ 370 if (_launcher_debug) { 371 int i = 0; 372 printf("Main-Class is '%s'\n", classname ? classname : ""); 373 printf("Apps' argc is %d\n", argc); 374 for (; i < argc; i++) { 375 printf(" argv[%2d] = '%s'\n", i, argv[i]); 376 } 377 } 378 379 ret = 1; 380 381 /* 382 * Get the application's main class. 383 * 384 * See bugid 5030265. The Main-Class name has already been parsed 385 * from the manifest, but not parsed properly for UTF-8 support. 386 * Hence the code here ignores the value previously extracted and 387 * uses the pre-existing code to reextract the value. This is 388 * possibly an end of release cycle expedient. However, it has 389 * also been discovered that passing some character sets through 390 * the environment has "strange" behavior on some variants of 391 * Windows. Hence, maybe the manifest parsing code local to the 392 * launcher should never be enhanced. 393 * 394 * Hence, future work should either: 395 * 1) Correct the local parsing code and verify that the 396 * Main-Class attribute gets properly passed through 397 * all environments, 398 * 2) Remove the vestages of maintaining main_class through 399 * the environment (and remove these comments). 400 */ 401 if (jarfile != 0) { 402 mainClassName = GetMainClassName(env, jarfile); 403 if ((*env)->ExceptionOccurred(env)) { 404 ReportExceptionDescription(env); 405 goto leave; 406 } 407 if (mainClassName == NULL) { 408 const char * format = "Failed to load Main-Class manifest " 409 "attribute from\n%s"; 410 message = (char*)MemAlloc((strlen(format) + strlen(jarfile)) * 411 sizeof(char)); 412 sprintf(message, format, jarfile); 413 messageDest = JNI_TRUE; 414 goto leave; 415 } 416 classname = (char *)(*env)->GetStringUTFChars(env, mainClassName, 0); 417 if (classname == NULL) { 418 ReportExceptionDescription(env); 419 goto leave; 420 } 421 mainClass = LoadClass(env, classname); 422 if(mainClass == NULL) { /* exception occurred */ 423 ReportExceptionDescription(env); 424 message = "Could not find the main class. Program will exit."; 425 goto leave; 426 } 427 (*env)->ReleaseStringUTFChars(env, mainClassName, classname); 428 } else { 429 mainClassName = NewPlatformString(env, classname); 430 if (mainClassName == NULL) { 431 const char * format = "Failed to load Main Class: %s"; 432 message = (char *)MemAlloc((strlen(format) + strlen(classname)) * 433 sizeof(char) ); 434 sprintf(message, format, classname); 435 messageDest = JNI_TRUE; 436 goto leave; 437 } 438 classname = (char *)(*env)->GetStringUTFChars(env, mainClassName, 0); 439 if (classname == NULL) { 440 ReportExceptionDescription(env); 441 goto leave; 442 } 443 mainClass = LoadClass(env, classname); 444 if(mainClass == NULL) { /* exception occurred */ 445 ReportExceptionDescription(env); 446 message = "Could not find the main class. Program will exit."; 447 goto leave; 448 } 449 (*env)->ReleaseStringUTFChars(env, mainClassName, classname); 450 } 451 452 /* Get the application's main method */ 453 mainID = (*env)->GetStaticMethodID(env, mainClass, "main", 454 "([Ljava/lang/String;)V"); 455 if (mainID == NULL) { 456 if ((*env)->ExceptionOccurred(env)) { 457 ReportExceptionDescription(env); 458 } else { 459 message = "No main method found in specified class."; 460 messageDest = JNI_TRUE; 461 } 462 goto leave; 463 } 464 465 { /* Make sure the main method is public */ 466 jint mods; 467 jmethodID mid; 468 jobject obj = (*env)->ToReflectedMethod(env, mainClass, 469 mainID, JNI_TRUE); 470 471 if( obj == NULL) { /* exception occurred */ 472 ReportExceptionDescription(env); 473 goto leave; 474 } 475 476 mid = 477 (*env)->GetMethodID(env, 478 (*env)->GetObjectClass(env, obj), 479 "getModifiers", "()I"); 480 if ((*env)->ExceptionOccurred(env)) { 481 ReportExceptionDescription(env); 482 goto leave; 483 } 484 485 mods = (*env)->CallIntMethod(env, obj, mid); 486 if ((mods & 1) == 0) { /* if (!Modifier.isPublic(mods)) ... */ 487 message = "Main method not public."; 488 messageDest = JNI_TRUE; 489 goto leave; 490 } 491 } 492 493 /* Build argument array */ 494 mainArgs = NewPlatformStringArray(env, argv, argc); 495 if (mainArgs == NULL) { 496 ReportExceptionDescription(env); 497 goto leave; 498 } 499 500 /* Invoke main method. */ 501 (*env)->CallStaticVoidMethod(env, mainClass, mainID, mainArgs); 502 503 /* 504 * The launcher's exit code (in the absence of calls to 505 * System.exit) will be non-zero if main threw an exception. 506 */ 507 ret = (*env)->ExceptionOccurred(env) == NULL ? 0 : 1; 508 509 /* 510 * Detach the main thread so that it appears to have ended when 511 * the application's main method exits. This will invoke the 512 * uncaught exception handler machinery if main threw an 513 * exception. An uncaught exception handler cannot change the 514 * launcher's return code except by calling System.exit. 515 */ 516 if ((*vm)->DetachCurrentThread(vm) != 0) { 517 message = "Could not detach main thread."; 518 messageDest = JNI_TRUE; 519 ret = 1; 520 goto leave; 521 } 522 523 message = NULL; 524 525 leave: 526 /* 527 * Wait for all non-daemon threads to end, then destroy the VM. 528 * This will actually create a trivial new Java waiter thread 529 * named "DestroyJavaVM", but this will be seen as a different 530 * thread from the one that executed main, even though they are 531 * the same C thread. This allows mainThread.join() and 532 * mainThread.isAlive() to work as expected. 533 */ 534 (*vm)->DestroyJavaVM(vm); 535 536 if(message != NULL && !noExitErrorMessage) 537 ReportErrorMessage(message, messageDest); 538 return ret; 539 } 540 541 542 #ifndef GAMMA 543 /* 544 * Checks the command line options to find which JVM type was 545 * specified. If no command line option was given for the JVM type, 546 * the default type is used. The environment variable 547 * JDK_ALTERNATE_VM and the command line option -XXaltjvm= are also 548 * checked as ways of specifying which JVM type to invoke. 549 */ 550 char * 551 CheckJvmType(int *pargc, char ***argv, jboolean speculative) { 552 int i, argi; 553 int argc; 554 char **newArgv; 555 int newArgvIdx = 0; 556 int isVMType; 557 int jvmidx = -1; 558 char *jvmtype = getenv("JDK_ALTERNATE_VM"); 559 560 argc = *pargc; 561 562 /* To make things simpler we always copy the argv array */ 563 newArgv = MemAlloc((argc + 1) * sizeof(char *)); 564 565 /* The program name is always present */ 566 newArgv[newArgvIdx++] = (*argv)[0]; 567 568 for (argi = 1; argi < argc; argi++) { 569 char *arg = (*argv)[argi]; 570 isVMType = 0; 571 572 #ifdef JAVA_ARGS 573 if (arg[0] != '-') { 574 newArgv[newArgvIdx++] = arg; 575 continue; 576 } 577 #else 578 if (strcmp(arg, "-classpath") == 0 || 579 strcmp(arg, "-cp") == 0) { 580 newArgv[newArgvIdx++] = arg; 581 argi++; 582 if (argi < argc) { 583 newArgv[newArgvIdx++] = (*argv)[argi]; 584 } 585 continue; 586 } 587 if (arg[0] != '-') break; 588 #endif 589 590 /* Did the user pass an explicit VM type? */ 591 i = KnownVMIndex(arg); 592 if (i >= 0) { 593 jvmtype = knownVMs[jvmidx = i].name + 1; /* skip the - */ 594 isVMType = 1; 595 *pargc = *pargc - 1; 596 } 597 598 /* Did the user specify an "alternate" VM? */ 599 else if (strncmp(arg, "-XXaltjvm=", 10) == 0 || strncmp(arg, "-J-XXaltjvm=", 12) == 0) { 600 isVMType = 1; 601 jvmtype = arg+((arg[1]=='X')? 10 : 12); 602 jvmidx = -1; 603 } 604 605 if (!isVMType) { 606 newArgv[newArgvIdx++] = arg; 607 } 608 } 609 610 /* 611 * Finish copying the arguments if we aborted the above loop. 612 * NOTE that if we aborted via "break" then we did NOT copy the 613 * last argument above, and in addition argi will be less than 614 * argc. 615 */ 616 while (argi < argc) { 617 newArgv[newArgvIdx++] = (*argv)[argi]; 618 argi++; 619 } 620 621 /* argv is null-terminated */ 622 newArgv[newArgvIdx] = 0; 623 624 /* Copy back argv */ 625 *argv = newArgv; 626 *pargc = newArgvIdx; 627 628 /* use the default VM type if not specified (no alias processing) */ 629 if (jvmtype == NULL) { 630 char* result = knownVMs[0].name+1; 631 /* Use a different VM type if we are on a server class machine? */ 632 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) && 633 (ServerClassMachine() == JNI_TRUE)) { 634 result = knownVMs[0].server_class+1; 635 } 636 if (_launcher_debug) { 637 printf("Default VM: %s\n", result); 638 } 639 return result; 640 } 641 642 /* if using an alternate VM, no alias processing */ 643 if (jvmidx < 0) 644 return jvmtype; 645 646 /* Resolve aliases first */ 647 { 648 int loopCount = 0; 649 while (knownVMs[jvmidx].flag == VM_ALIASED_TO) { 650 int nextIdx = KnownVMIndex(knownVMs[jvmidx].alias); 651 652 if (loopCount > knownVMsCount) { 653 if (!speculative) { 654 ReportErrorMessage("Error: Corrupt jvm.cfg file; cycle in alias list.", 655 JNI_TRUE); 656 exit(1); 657 } else { 658 return "ERROR"; 659 /* break; */ 660 } 661 } 662 663 if (nextIdx < 0) { 664 if (!speculative) { 665 ReportErrorMessage2("Error: Unable to resolve VM alias %s", 666 knownVMs[jvmidx].alias, JNI_TRUE); 667 exit(1); 668 } else { 669 return "ERROR"; 670 } 671 } 672 jvmidx = nextIdx; 673 jvmtype = knownVMs[jvmidx].name+1; 674 loopCount++; 675 } 676 } 677 678 switch (knownVMs[jvmidx].flag) { 679 case VM_WARN: 680 if (!speculative) { 681 fprintf(stderr, "Warning: %s VM not supported; %s VM will be used\n", 682 jvmtype, knownVMs[0].name + 1); 683 } 684 /* fall through */ 685 case VM_IGNORE: 686 jvmtype = knownVMs[jvmidx=0].name + 1; 687 /* fall through */ 688 case VM_KNOWN: 689 break; 690 case VM_ERROR: 691 if (!speculative) { 692 ReportErrorMessage2("Error: %s VM not supported", jvmtype, JNI_TRUE); 693 exit(1); 694 } else { 695 return "ERROR"; 696 } 697 } 698 699 return jvmtype; 700 } 701 #endif /* ifndef GAMMA */ 702 703 /* 704 * Adds a new VM option with the given given name and value. 705 */ 706 static void 707 AddOption(char *str, void *info) 708 { 709 /* 710 * Expand options array if needed to accommodate at least one more 711 * VM option. 712 */ 713 if (numOptions >= maxOptions) { 714 if (options == 0) { 715 maxOptions = 4; 716 options = MemAlloc(maxOptions * sizeof(JavaVMOption)); 717 } else { 718 JavaVMOption *tmp; 719 maxOptions *= 2; 720 tmp = MemAlloc(maxOptions * sizeof(JavaVMOption)); 721 memcpy(tmp, options, numOptions * sizeof(JavaVMOption)); 722 free(options); 723 options = tmp; 724 } 725 } 726 options[numOptions].optionString = str; 727 options[numOptions++].extraInfo = info; 728 } 729 730 static void 731 SetClassPath(char *s) 732 { 733 char *def = MemAlloc(strlen(s) + 40); 734 sprintf(def, "-Djava.class.path=%s", s); 735 AddOption(def, NULL); 736 } 737 738 #ifndef GAMMA 739 /* 740 * The SelectVersion() routine ensures that an appropriate version of 741 * the JRE is running. The specification for the appropriate version 742 * is obtained from either the manifest of a jar file (preferred) or 743 * from command line options. 744 */ 745 static void 746 SelectVersion(int argc, char **argv, char **main_class) 747 { 748 char *arg; 749 char **new_argv; 750 char **new_argp; 751 char *operand; 752 char *version = NULL; 753 char *jre = NULL; 754 int jarflag = 0; 755 int restrict_search = -1; /* -1 implies not known */ 756 manifest_info info; 757 char env_entry[MAXNAMELEN + 24] = ENV_ENTRY "="; 758 char *env_in; 759 int res; 760 761 /* 762 * If the version has already been selected, set *main_class 763 * with the value passed through the environment (if any) and 764 * simply return. 765 */ 766 if ((env_in = getenv(ENV_ENTRY)) != NULL) { 767 if (*env_in != '\0') 768 *main_class = strdup(env_in); 769 return; 770 } 771 772 /* 773 * Scan through the arguments for options relevant to multiple JRE 774 * support. For reference, the command line syntax is defined as: 775 * 776 * SYNOPSIS 777 * java [options] class [argument...] 778 * 779 * java [options] -jar file.jar [argument...] 780 * 781 * As the scan is performed, make a copy of the argument list with 782 * the version specification options (new to 1.5) removed, so that 783 * a version less than 1.5 can be exec'd. 784 */ 785 new_argv = MemAlloc((argc + 1) * sizeof(char*)); 786 new_argv[0] = argv[0]; 787 new_argp = &new_argv[1]; 788 argc--; 789 argv++; 790 while ((arg = *argv) != 0 && *arg == '-') { 791 if (strncmp(arg, "-version:", 9) == 0) { 792 version = arg + 9; 793 } else if (strcmp(arg, "-jre-restrict-search") == 0) { 794 restrict_search = 1; 795 } else if (strcmp(arg, "-no-jre-restrict-search") == 0) { 796 restrict_search = 0; 797 } else { 798 if (strcmp(arg, "-jar") == 0) 799 jarflag = 1; 800 /* deal with "unfortunate" classpath syntax */ 801 if ((strcmp(arg, "-classpath") == 0 || strcmp(arg, "-cp") == 0) && 802 (argc >= 2)) { 803 *new_argp++ = arg; 804 argc--; 805 argv++; 806 arg = *argv; 807 } 808 *new_argp++ = arg; 809 } 810 argc--; 811 argv++; 812 } 813 if (argc <= 0) { /* No operand? Possibly legit with -[full]version */ 814 operand = NULL; 815 } else { 816 argc--; 817 *new_argp++ = operand = *argv++; 818 } 819 while (argc-- > 0) /* Copy over [argument...] */ 820 *new_argp++ = *argv++; 821 *new_argp = NULL; 822 823 /* 824 * If there is a jar file, read the manifest. If the jarfile can't be 825 * read, the manifest can't be read from the jar file, or the manifest 826 * is corrupt, issue the appropriate error messages and exit. 827 * 828 * Even if there isn't a jar file, construct a manifest_info structure 829 * containing the command line information. It's a convenient way to carry 830 * this data around. 831 */ 832 if (jarflag && operand) { 833 if ((res = parse_manifest(operand, &info)) != 0) { 834 if (res == -1) 835 ReportErrorMessage2("Unable to access jarfile %s", 836 operand, JNI_TRUE); 837 else 838 ReportErrorMessage2("Invalid or corrupt jarfile %s", 839 operand, JNI_TRUE); 840 exit(1); 841 } 842 } else { 843 info.manifest_version = NULL; 844 info.main_class = NULL; 845 info.jre_version = NULL; 846 info.jre_restrict_search = 0; 847 } 848 849 /* 850 * The JRE-Version and JRE-Restrict-Search values (if any) from the 851 * manifest are overwritten by any specified on the command line. 852 */ 853 if (version != NULL) 854 info.jre_version = version; 855 if (restrict_search != -1) 856 info.jre_restrict_search = restrict_search; 857 858 /* 859 * "Valid" returns (other than unrecoverable errors) follow. Set 860 * main_class as a side-effect of this routine. 861 */ 862 if (info.main_class != NULL) 863 *main_class = strdup(info.main_class); 864 865 /* 866 * If no version selection information is found either on the command 867 * line or in the manifest, simply return. 868 */ 869 if (info.jre_version == NULL) { 870 free_manifest(); 871 free(new_argv); 872 return; 873 } 874 875 /* 876 * Check for correct syntax of the version specification (JSR 56). 877 */ 878 if (!valid_version_string(info.jre_version)) { 879 ReportErrorMessage2("Syntax error in version specification \"%s\"", 880 info.jre_version, JNI_TRUE); 881 exit(1); 882 } 883 884 /* 885 * Find the appropriate JVM on the system. Just to be as forgiving as 886 * possible, if the standard algorithms don't locate an appropriate 887 * jre, check to see if the one running will satisfy the requirements. 888 * This can happen on systems which haven't been set-up for multiple 889 * JRE support. 890 */ 891 jre = LocateJRE(&info); 892 if (_launcher_debug) 893 printf("JRE-Version = %s, JRE-Restrict-Search = %s Selected = %s\n", 894 (info.jre_version?info.jre_version:"null"), 895 (info.jre_restrict_search?"true":"false"), (jre?jre:"null")); 896 if (jre == NULL) { 897 if (acceptable_release(FULL_VERSION, info.jre_version)) { 898 free_manifest(); 899 free(new_argv); 900 return; 901 } else { 902 ReportErrorMessage2( 903 "Unable to locate JRE meeting specification \"%s\"", 904 info.jre_version, JNI_TRUE); 905 exit(1); 906 } 907 } 908 909 /* 910 * If I'm not the chosen one, exec the chosen one. Returning from 911 * ExecJRE indicates that I am indeed the chosen one. 912 * 913 * The private environment variable _JAVA_VERSION_SET is used to 914 * prevent the chosen one from re-reading the manifest file and 915 * using the values found within to override the (potential) command 916 * line flags stripped from argv (because the target may not 917 * understand them). Passing the MainClass value is an optimization 918 * to avoid locating, expanding and parsing the manifest extra 919 * times. 920 */ 921 if (info.main_class != NULL) 922 (void)strcat(env_entry, info.main_class); 923 (void)putenv(env_entry); 924 ExecJRE(jre, new_argv); 925 free_manifest(); 926 free(new_argv); 927 return; 928 } 929 #endif /* ifndef GAMMA */ 930 931 /* 932 * Parses command line arguments. Returns JNI_FALSE if launcher 933 * should exit without starting vm (e.g. certain version and usage 934 * options); returns JNI_TRUE if vm needs to be started to process 935 * given options. *pret (the launcher process return value) is set to 936 * 0 for a normal exit. 937 */ 938 static jboolean 939 ParseArguments(int *pargc, char ***pargv, char **pjarfile, 940 char **pclassname, int *pret) 941 { 942 int argc = *pargc; 943 char **argv = *pargv; 944 jboolean jarflag = JNI_FALSE; 945 char *arg; 946 947 *pret = 1; 948 while ((arg = *argv) != 0 && *arg == '-') { 949 argv++; --argc; 950 if (strcmp(arg, "-classpath") == 0 || strcmp(arg, "-cp") == 0) { 951 if (argc < 1) { 952 ReportErrorMessage2("%s requires class path specification", 953 arg, JNI_TRUE); 954 PrintUsage(); 955 return JNI_FALSE; 956 } 957 SetClassPath(*argv); 958 argv++; --argc; 959 } else if (strcmp(arg, "-jar") == 0) { 960 jarflag = JNI_TRUE; 961 } else if (strcmp(arg, "-help") == 0 || 962 strcmp(arg, "-h") == 0 || 963 strcmp(arg, "-?") == 0) { 964 PrintUsage(); 965 *pret = 0; 966 return JNI_FALSE; 967 } else if (strcmp(arg, "-version") == 0) { 968 printVersion = JNI_TRUE; 969 return JNI_TRUE; 970 } else if (strcmp(arg, "-showversion") == 0) { 971 showVersion = JNI_TRUE; 972 } else if (strcmp(arg, "-X") == 0) { 973 *pret = PrintXUsage(); 974 return JNI_FALSE; 975 /* 976 * The following case provide backward compatibility with old-style 977 * command line options. 978 */ 979 } else if (strcmp(arg, "-fullversion") == 0) { 980 fprintf(stderr, "%s full version \"%s\"\n", progname, 981 FULL_VERSION); 982 *pret = 0; 983 return JNI_FALSE; 984 } else if (strcmp(arg, "-verbosegc") == 0) { 985 AddOption("-verbose:gc", NULL); 986 } else if (strcmp(arg, "-t") == 0) { 987 AddOption("-Xt", NULL); 988 } else if (strcmp(arg, "-tm") == 0) { 989 AddOption("-Xtm", NULL); 990 } else if (strcmp(arg, "-debug") == 0) { 991 AddOption("-Xdebug", NULL); 992 } else if (strcmp(arg, "-noclassgc") == 0) { 993 AddOption("-Xnoclassgc", NULL); 994 } else if (strcmp(arg, "-Xfuture") == 0) { 995 AddOption("-Xverify:all", NULL); 996 } else if (strcmp(arg, "-verify") == 0) { 997 AddOption("-Xverify:all", NULL); 998 } else if (strcmp(arg, "-verifyremote") == 0) { 999 AddOption("-Xverify:remote", NULL); 1000 } else if (strcmp(arg, "-noverify") == 0) { 1001 AddOption("-Xverify:none", NULL); 1002 } else if (strcmp(arg, "-XXsuppressExitMessage") == 0) { 1003 noExitErrorMessage = 1; 1004 } else if (strncmp(arg, "-prof", 5) == 0) { 1005 char *p = arg + 5; 1006 char *tmp = MemAlloc(strlen(arg) + 50); 1007 if (*p) { 1008 sprintf(tmp, "-Xrunhprof:cpu=old,file=%s", p + 1); 1009 } else { 1010 sprintf(tmp, "-Xrunhprof:cpu=old,file=java.prof"); 1011 } 1012 AddOption(tmp, NULL); 1013 } else if (strncmp(arg, "-ss", 3) == 0 || 1014 strncmp(arg, "-oss", 4) == 0 || 1015 strncmp(arg, "-ms", 3) == 0 || 1016 strncmp(arg, "-mx", 3) == 0) { 1017 char *tmp = MemAlloc(strlen(arg) + 6); 1018 sprintf(tmp, "-X%s", arg + 1); /* skip '-' */ 1019 AddOption(tmp, NULL); 1020 } else if (strcmp(arg, "-checksource") == 0 || 1021 strcmp(arg, "-cs") == 0 || 1022 strcmp(arg, "-noasyncgc") == 0) { 1023 /* No longer supported */ 1024 fprintf(stderr, 1025 "Warning: %s option is no longer supported.\n", 1026 arg); 1027 } else if (strncmp(arg, "-version:", 9) == 0 || 1028 strcmp(arg, "-no-jre-restrict-search") == 0 || 1029 strcmp(arg, "-jre-restrict-search") == 0) { 1030 ; /* Ignore machine independent options already handled */ 1031 } else if (RemovableMachineDependentOption(arg) ) { 1032 ; /* Do not pass option to vm. */ 1033 } 1034 else { 1035 AddOption(arg, NULL); 1036 } 1037 } 1038 1039 if (--argc >= 0) { 1040 if (jarflag) { 1041 *pjarfile = *argv++; 1042 *pclassname = 0; 1043 } else { 1044 *pjarfile = 0; 1045 *pclassname = *argv++; 1046 } 1047 *pargc = argc; 1048 *pargv = argv; 1049 } 1050 1051 return JNI_TRUE; 1052 } 1053 1054 /* 1055 * Initializes the Java Virtual Machine. Also frees options array when 1056 * finished. 1057 */ 1058 static jboolean 1059 InitializeJVM(JavaVM **pvm, JNIEnv **penv, InvocationFunctions *ifn) 1060 { 1061 JavaVMInitArgs args; 1062 jint r; 1063 1064 memset(&args, 0, sizeof(args)); 1065 args.version = JNI_VERSION_1_2; 1066 args.nOptions = numOptions; 1067 args.options = options; 1068 args.ignoreUnrecognized = JNI_FALSE; 1069 1070 if (_launcher_debug) { 1071 int i = 0; 1072 printf("JavaVM args:\n "); 1073 printf("version 0x%08lx, ", (long)args.version); 1074 printf("ignoreUnrecognized is %s, ", 1075 args.ignoreUnrecognized ? "JNI_TRUE" : "JNI_FALSE"); 1076 printf("nOptions is %ld\n", (long)args.nOptions); 1077 for (i = 0; i < numOptions; i++) 1078 printf(" option[%2d] = '%s'\n", 1079 i, args.options[i].optionString); 1080 } 1081 1082 r = ifn->CreateJavaVM(pvm, (void **)penv, &args); 1083 free(options); 1084 return r == JNI_OK; 1085 } 1086 1087 1088 #define NULL_CHECK0(e) if ((e) == 0) return 0 1089 #define NULL_CHECK(e) if ((e) == 0) return 1090 1091 /* 1092 * Returns a pointer to a block of at least 'size' bytes of memory. 1093 * Prints error message and exits if the memory could not be allocated. 1094 */ 1095 void * 1096 MemAlloc(size_t size) 1097 { 1098 void *p = malloc(size); 1099 if (p == 0) { 1100 perror("malloc"); 1101 exit(1); 1102 } 1103 return p; 1104 } 1105 1106 static jstring platformEncoding = NULL; 1107 static jstring getPlatformEncoding(JNIEnv *env) { 1108 if (platformEncoding == NULL) { 1109 jstring propname = (*env)->NewStringUTF(env, "sun.jnu.encoding"); 1110 if (propname) { 1111 jclass cls; 1112 jmethodID mid; 1113 NULL_CHECK0 (cls = FindBootStrapClass(env, "java/lang/System")); 1114 NULL_CHECK0 (mid = (*env)->GetStaticMethodID( 1115 env, cls, 1116 "getProperty", 1117 "(Ljava/lang/String;)Ljava/lang/String;")); 1118 platformEncoding = (*env)->CallStaticObjectMethod ( 1119 env, cls, mid, propname); 1120 } 1121 } 1122 return platformEncoding; 1123 } 1124 1125 static jboolean isEncodingSupported(JNIEnv *env, jstring enc) { 1126 jclass cls; 1127 jmethodID mid; 1128 NULL_CHECK0 (cls = FindBootStrapClass(env, "java/nio/charset/Charset")); 1129 NULL_CHECK0 (mid = (*env)->GetStaticMethodID( 1130 env, cls, 1131 "isSupported", 1132 "(Ljava/lang/String;)Z")); 1133 return (*env)->CallStaticBooleanMethod (env, cls, mid, enc); 1134 } 1135 1136 /* 1137 * Returns a new Java string object for the specified platform string. 1138 */ 1139 static jstring 1140 NewPlatformString(JNIEnv *env, char *s) 1141 { 1142 int len = (int)strlen(s); 1143 jclass cls; 1144 jmethodID mid; 1145 jbyteArray ary; 1146 jstring enc; 1147 1148 if (s == NULL) 1149 return 0; 1150 enc = getPlatformEncoding(env); 1151 1152 ary = (*env)->NewByteArray(env, len); 1153 if (ary != 0) { 1154 jstring str = 0; 1155 (*env)->SetByteArrayRegion(env, ary, 0, len, (jbyte *)s); 1156 if (!(*env)->ExceptionOccurred(env)) { 1157 #ifdef GAMMA 1158 /* We support running JVM with older JDK, so here we have to deal */ 1159 /* with the case that sun.jnu.encoding is undefined (enc == NULL) */ 1160 if (enc != NULL && isEncodingSupported(env, enc) == JNI_TRUE) { 1161 #else 1162 if (isEncodingSupported(env, enc) == JNI_TRUE) { 1163 #endif 1164 NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String")); 1165 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>", 1166 "([BLjava/lang/String;)V")); 1167 str = (*env)->NewObject(env, cls, mid, ary, enc); 1168 } else { 1169 /*If the encoding specified in sun.jnu.encoding is not 1170 endorsed by "Charset.isSupported" we have to fall back 1171 to use String(byte[]) explicitly here without specifying 1172 the encoding name, in which the StringCoding class will 1173 pickup the iso-8859-1 as the fallback converter for us. 1174 */ 1175 NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String")); 1176 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>", 1177 "([B)V")); 1178 str = (*env)->NewObject(env, cls, mid, ary); 1179 } 1180 (*env)->DeleteLocalRef(env, ary); 1181 return str; 1182 } 1183 } 1184 return 0; 1185 } 1186 1187 /* 1188 * Returns a new array of Java string objects for the specified 1189 * array of platform strings. 1190 */ 1191 static jobjectArray 1192 NewPlatformStringArray(JNIEnv *env, char **strv, int strc) 1193 { 1194 jarray cls; 1195 jarray ary; 1196 int i; 1197 1198 NULL_CHECK0(cls = FindBootStrapClass(env, "java/lang/String")); 1199 NULL_CHECK0(ary = (*env)->NewObjectArray(env, strc, cls, 0)); 1200 for (i = 0; i < strc; i++) { 1201 jstring str = NewPlatformString(env, *strv++); 1202 NULL_CHECK0(str); 1203 (*env)->SetObjectArrayElement(env, ary, i, str); 1204 (*env)->DeleteLocalRef(env, str); 1205 } 1206 return ary; 1207 } 1208 1209 /* 1210 * Loads a class, convert the '.' to '/'. 1211 */ 1212 static jclass 1213 LoadClass(JNIEnv *env, char *name) 1214 { 1215 char *buf = MemAlloc(strlen(name) + 1); 1216 char *s = buf, *t = name, c; 1217 jclass cls; 1218 jlong start, end; 1219 1220 if (_launcher_debug) 1221 start = CounterGet(); 1222 1223 do { 1224 c = *t++; 1225 *s++ = (c == '.') ? '/' : c; 1226 } while (c != '\0'); 1227 // use the application class loader for main-class 1228 cls = (*env)->FindClass(env, buf); 1229 free(buf); 1230 1231 if (_launcher_debug) { 1232 end = CounterGet(); 1233 printf("%ld micro seconds to load main class\n", 1234 (long)(jint)Counter2Micros(end-start)); 1235 printf("----_JAVA_LAUNCHER_DEBUG----\n"); 1236 } 1237 1238 return cls; 1239 } 1240 1241 1242 /* 1243 * Returns the main class name for the specified jar file. 1244 */ 1245 static jstring 1246 GetMainClassName(JNIEnv *env, char *jarname) 1247 { 1248 #define MAIN_CLASS "Main-Class" 1249 jclass cls; 1250 jmethodID mid; 1251 jobject jar, man, attr; 1252 jstring str, result = 0; 1253 1254 NULL_CHECK0(cls = FindBootStrapClass(env, "java/util/jar/JarFile")); 1255 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "<init>", 1256 "(Ljava/lang/String;)V")); 1257 NULL_CHECK0(str = NewPlatformString(env, jarname)); 1258 NULL_CHECK0(jar = (*env)->NewObject(env, cls, mid, str)); 1259 NULL_CHECK0(mid = (*env)->GetMethodID(env, cls, "getManifest", 1260 "()Ljava/util/jar/Manifest;")); 1261 man = (*env)->CallObjectMethod(env, jar, mid); 1262 if (man != 0) { 1263 NULL_CHECK0(mid = (*env)->GetMethodID(env, 1264 (*env)->GetObjectClass(env, man), 1265 "getMainAttributes", 1266 "()Ljava/util/jar/Attributes;")); 1267 attr = (*env)->CallObjectMethod(env, man, mid); 1268 if (attr != 0) { 1269 NULL_CHECK0(mid = (*env)->GetMethodID(env, 1270 (*env)->GetObjectClass(env, attr), 1271 "getValue", 1272 "(Ljava/lang/String;)Ljava/lang/String;")); 1273 NULL_CHECK0(str = NewPlatformString(env, MAIN_CLASS)); 1274 result = (*env)->CallObjectMethod(env, attr, mid, str); 1275 } 1276 } 1277 return result; 1278 } 1279 1280 #ifdef JAVA_ARGS 1281 static char *java_args[] = JAVA_ARGS; 1282 static char *app_classpath[] = APP_CLASSPATH; 1283 1284 /* 1285 * For tools convert 'javac -J-ms32m' to 'java -ms32m ...' 1286 */ 1287 static void 1288 TranslateDashJArgs(int *pargc, char ***pargv) 1289 { 1290 const int NUM_ARGS = (sizeof(java_args) / sizeof(char *)); 1291 int argc = *pargc; 1292 char **argv = *pargv; 1293 int nargc = argc + NUM_ARGS; 1294 char **nargv = MemAlloc((nargc + 1) * sizeof(char *)); 1295 int i; 1296 1297 *pargc = nargc; 1298 *pargv = nargv; 1299 1300 /* Copy the VM arguments (i.e. prefixed with -J) */ 1301 for (i = 0; i < NUM_ARGS; i++) { 1302 char *arg = java_args[i]; 1303 if (arg[0] == '-' && arg[1] == 'J') { 1304 *nargv++ = arg + 2; 1305 } 1306 } 1307 1308 for (i = 0; i < argc; i++) { 1309 char *arg = argv[i]; 1310 if (arg[0] == '-' && arg[1] == 'J') { 1311 if (arg[2] == '\0') { 1312 ReportErrorMessage("Error: the -J option should not be " 1313 "followed by a space.", JNI_TRUE); 1314 exit(1); 1315 } 1316 *nargv++ = arg + 2; 1317 } 1318 } 1319 1320 /* Copy the rest of the arguments */ 1321 for (i = 0; i < NUM_ARGS; i++) { 1322 char *arg = java_args[i]; 1323 if (arg[0] != '-' || arg[1] != 'J') { 1324 *nargv++ = arg; 1325 } 1326 } 1327 for (i = 0; i < argc; i++) { 1328 char *arg = argv[i]; 1329 if (arg[0] != '-' || arg[1] != 'J') { 1330 *nargv++ = arg; 1331 } 1332 } 1333 *nargv = 0; 1334 } 1335 1336 /* 1337 * For our tools, we try to add 3 VM options: 1338 * -Denv.class.path=<envcp> 1339 * -Dapplication.home=<apphome> 1340 * -Djava.class.path=<appcp> 1341 * <envcp> is the user's setting of CLASSPATH -- for instance the user 1342 * tells javac where to find binary classes through this environment 1343 * variable. Notice that users will be able to compile against our 1344 * tools classes (sun.tools.javac.Main) only if they explicitly add 1345 * tools.jar to CLASSPATH. 1346 * <apphome> is the directory where the application is installed. 1347 * <appcp> is the classpath to where our apps' classfiles are. 1348 */ 1349 static jboolean 1350 AddApplicationOptions() 1351 { 1352 const int NUM_APP_CLASSPATH = (sizeof(app_classpath) / sizeof(char *)); 1353 char *s, *envcp, *appcp, *apphome; 1354 char home[MAXPATHLEN]; /* application home */ 1355 char separator[] = { PATH_SEPARATOR, '\0' }; 1356 int size, i; 1357 int strlenHome; 1358 1359 s = getenv("CLASSPATH"); 1360 if (s) { 1361 /* 40 for -Denv.class.path= */ 1362 envcp = (char *)MemAlloc(strlen(s) + 40); 1363 sprintf(envcp, "-Denv.class.path=%s", s); 1364 AddOption(envcp, NULL); 1365 } 1366 1367 if (!GetApplicationHome(home, sizeof(home))) { 1368 ReportErrorMessage("Can't determine application home", JNI_TRUE); 1369 return JNI_FALSE; 1370 } 1371 1372 /* 40 for '-Dapplication.home=' */ 1373 apphome = (char *)MemAlloc(strlen(home) + 40); 1374 sprintf(apphome, "-Dapplication.home=%s", home); 1375 AddOption(apphome, NULL); 1376 1377 /* How big is the application's classpath? */ 1378 size = 40; /* 40: "-Djava.class.path=" */ 1379 strlenHome = (int)strlen(home); 1380 for (i = 0; i < NUM_APP_CLASSPATH; i++) { 1381 size += strlenHome + (int)strlen(app_classpath[i]) + 1; /* 1: separator */ 1382 } 1383 appcp = (char *)MemAlloc(size + 1); 1384 strcpy(appcp, "-Djava.class.path="); 1385 for (i = 0; i < NUM_APP_CLASSPATH; i++) { 1386 strcat(appcp, home); /* c:\program files\myapp */ 1387 strcat(appcp, app_classpath[i]); /* \lib\myapp.jar */ 1388 strcat(appcp, separator); /* ; */ 1389 } 1390 appcp[strlen(appcp)-1] = '\0'; /* remove trailing path separator */ 1391 AddOption(appcp, NULL); 1392 return JNI_TRUE; 1393 } 1394 #endif 1395 1396 /* 1397 * inject the -Dsun.java.command pseudo property into the args structure 1398 * this pseudo property is used in the HotSpot VM to expose the 1399 * Java class name and arguments to the main method to the VM. The 1400 * HotSpot VM uses this pseudo property to store the Java class name 1401 * (or jar file name) and the arguments to the class's main method 1402 * to the instrumentation memory region. The sun.java.command pseudo 1403 * property is not exported by HotSpot to the Java layer. 1404 */ 1405 void 1406 SetJavaCommandLineProp(char *classname, char *jarfile, 1407 int argc, char **argv) 1408 { 1409 1410 int i = 0; 1411 size_t len = 0; 1412 char* javaCommand = NULL; 1413 char* dashDstr = "-Dsun.java.command="; 1414 1415 if (classname == NULL && jarfile == NULL) { 1416 /* unexpected, one of these should be set. just return without 1417 * setting the property 1418 */ 1419 return; 1420 } 1421 1422 /* if the class name is not set, then use the jarfile name */ 1423 if (classname == NULL) { 1424 classname = jarfile; 1425 } 1426 1427 /* determine the amount of memory to allocate assuming 1428 * the individual components will be space separated 1429 */ 1430 len = strlen(classname); 1431 for (i = 0; i < argc; i++) { 1432 len += strlen(argv[i]) + 1; 1433 } 1434 1435 /* allocate the memory */ 1436 javaCommand = (char*) MemAlloc(len + strlen(dashDstr) + 1); 1437 1438 /* build the -D string */ 1439 *javaCommand = '\0'; 1440 strcat(javaCommand, dashDstr); 1441 strcat(javaCommand, classname); 1442 1443 for (i = 0; i < argc; i++) { 1444 /* the components of the string are space separated. In 1445 * the case of embedded white space, the relationship of 1446 * the white space separated components to their true 1447 * positional arguments will be ambiguous. This issue may 1448 * be addressed in a future release. 1449 */ 1450 strcat(javaCommand, " "); 1451 strcat(javaCommand, argv[i]); 1452 } 1453 1454 AddOption(javaCommand, NULL); 1455 } 1456 1457 /* 1458 * JVM wants to know launcher type, so tell it. 1459 */ 1460 #ifdef GAMMA 1461 void SetJavaLauncherProp() { 1462 AddOption("-Dsun.java.launcher=" LAUNCHER_TYPE, NULL); 1463 } 1464 #endif 1465 1466 /* 1467 * Prints the version information from the java.version and other properties. 1468 */ 1469 static void 1470 PrintJavaVersion(JNIEnv *env) 1471 { 1472 jclass ver; 1473 jmethodID print; 1474 1475 NULL_CHECK(ver = FindBootStrapClass(env, "sun/misc/Version")); 1476 NULL_CHECK(print = (*env)->GetStaticMethodID(env, ver, "print", "()V")); 1477 1478 (*env)->CallStaticVoidMethod(env, ver, print); 1479 } 1480 1481 /* 1482 * Prints default usage message. 1483 */ 1484 static void 1485 PrintUsage(void) 1486 { 1487 int i; 1488 1489 fprintf(stdout, 1490 "Usage: %s [-options] class [args...]\n" 1491 " (to execute a class)\n" 1492 " or %s [-options] -jar jarfile [args...]\n" 1493 " (to execute a jar file)\n" 1494 "\n" 1495 "where options include:\n", 1496 progname, 1497 progname); 1498 1499 #ifndef GAMMA 1500 PrintMachineDependentOptions(); 1501 1502 if ((knownVMs[0].flag == VM_KNOWN) || 1503 (knownVMs[0].flag == VM_IF_SERVER_CLASS)) { 1504 fprintf(stdout, " %s\t to select the \"%s\" VM\n", 1505 knownVMs[0].name, knownVMs[0].name+1); 1506 } 1507 for (i=1; i<knownVMsCount; i++) { 1508 if (knownVMs[i].flag == VM_KNOWN) 1509 fprintf(stdout, " %s\t to select the \"%s\" VM\n", 1510 knownVMs[i].name, knownVMs[i].name+1); 1511 } 1512 for (i=1; i<knownVMsCount; i++) { 1513 if (knownVMs[i].flag == VM_ALIASED_TO) 1514 fprintf(stdout, " %s\t is a synonym for " 1515 "the \"%s\" VM [deprecated]\n", 1516 knownVMs[i].name, knownVMs[i].alias+1); 1517 } 1518 1519 /* The first known VM is the default */ 1520 { 1521 const char* defaultVM = knownVMs[0].name+1; 1522 const char* punctuation = "."; 1523 const char* reason = ""; 1524 if ((knownVMs[0].flag == VM_IF_SERVER_CLASS) && 1525 (ServerClassMachine() == JNI_TRUE)) { 1526 defaultVM = knownVMs[0].server_class+1; 1527 punctuation = ", "; 1528 reason = "because you are running on a server-class machine.\n"; 1529 } 1530 fprintf(stdout, " The default VM is %s%s\n", 1531 defaultVM, punctuation); 1532 fprintf(stdout, " %s\n", 1533 reason); 1534 } 1535 #endif /* ifndef GAMMA */ 1536 1537 fprintf(stdout, 1538 " -cp <class search path of directories and zip/jar files>\n" 1539 " -classpath <class search path of directories and zip/jar files>\n" 1540 " A %c separated list of directories, JAR archives,\n" 1541 " and ZIP archives to search for class files.\n" 1542 " -D<name>=<value>\n" 1543 " set a system property\n" 1544 " -verbose[:class|gc|jni]\n" 1545 " enable verbose output\n" 1546 " -version print product version and exit\n" 1547 " -version:<value>\n" 1548 " require the specified version to run\n" 1549 " -showversion print product version and continue\n" 1550 " -jre-restrict-search | -jre-no-restrict-search\n" 1551 " include/exclude user private JREs in the version search\n" 1552 " -? -help print this help message\n" 1553 " -X print help on non-standard options\n" 1554 " -ea[:<packagename>...|:<classname>]\n" 1555 " -enableassertions[:<packagename>...|:<classname>]\n" 1556 " enable assertions\n" 1557 " -da[:<packagename>...|:<classname>]\n" 1558 " -disableassertions[:<packagename>...|:<classname>]\n" 1559 " disable assertions\n" 1560 " -esa | -enablesystemassertions\n" 1561 " enable system assertions\n" 1562 " -dsa | -disablesystemassertions\n" 1563 " disable system assertions\n" 1564 " -agentlib:<libname>[=<options>]\n" 1565 " load native agent library <libname>, e.g. -agentlib:hprof\n" 1566 " see also, -agentlib:jdwp=help and -agentlib:hprof=help\n" 1567 " -agentpath:<pathname>[=<options>]\n" 1568 " load native agent library by full pathname\n" 1569 " -javaagent:<jarpath>[=<options>]\n" 1570 " load Java programming language agent, see java.lang.instrument\n" 1571 1572 ,PATH_SEPARATOR); 1573 } 1574 1575 /* 1576 * Print usage message for -X options. 1577 */ 1578 static jint 1579 PrintXUsage(void) 1580 { 1581 char path[MAXPATHLEN]; 1582 char buf[128]; 1583 size_t n; 1584 FILE *fp; 1585 1586 GetXUsagePath(path, sizeof(path)); 1587 fp = fopen(path, "r"); 1588 if (fp == 0) { 1589 fprintf(stderr, "Can't open %s\n", path); 1590 return 1; 1591 } 1592 while ((n = fread(buf, 1, sizeof(buf), fp)) != 0) { 1593 fwrite(buf, 1, n, stdout); 1594 } 1595 fclose(fp); 1596 return 0; 1597 } 1598 1599 #ifndef GAMMA 1600 1601 /* 1602 * Read the jvm.cfg file and fill the knownJVMs[] array. 1603 * 1604 * The functionality of the jvm.cfg file is subject to change without 1605 * notice and the mechanism will be removed in the future. 1606 * 1607 * The lexical structure of the jvm.cfg file is as follows: 1608 * 1609 * jvmcfg := { vmLine } 1610 * vmLine := knownLine 1611 * | aliasLine 1612 * | warnLine 1613 * | ignoreLine 1614 * | errorLine 1615 * | predicateLine 1616 * | commentLine 1617 * knownLine := flag "KNOWN" EOL 1618 * warnLine := flag "WARN" EOL 1619 * ignoreLine := flag "IGNORE" EOL 1620 * errorLine := flag "ERROR" EOL 1621 * aliasLine := flag "ALIASED_TO" flag EOL 1622 * predicateLine := flag "IF_SERVER_CLASS" flag EOL 1623 * commentLine := "#" text EOL 1624 * flag := "-" identifier 1625 * 1626 * The semantics are that when someone specifies a flag on the command line: 1627 * - if the flag appears on a knownLine, then the identifier is used as 1628 * the name of the directory holding the JVM library (the name of the JVM). 1629 * - if the flag appears as the first flag on an aliasLine, the identifier 1630 * of the second flag is used as the name of the JVM. 1631 * - if the flag appears on a warnLine, the identifier is used as the 1632 * name of the JVM, but a warning is generated. 1633 * - if the flag appears on an ignoreLine, the identifier is recognized as the 1634 * name of a JVM, but the identifier is ignored and the default vm used 1635 * - if the flag appears on an errorLine, an error is generated. 1636 * - if the flag appears as the first flag on a predicateLine, and 1637 * the machine on which you are running passes the predicate indicated, 1638 * then the identifier of the second flag is used as the name of the JVM, 1639 * otherwise the identifier of the first flag is used as the name of the JVM. 1640 * If no flag is given on the command line, the first vmLine of the jvm.cfg 1641 * file determines the name of the JVM. 1642 * PredicateLines are only interpreted on first vmLine of a jvm.cfg file, 1643 * since they only make sense if someone hasn't specified the name of the 1644 * JVM on the command line. 1645 * 1646 * The intent of the jvm.cfg file is to allow several JVM libraries to 1647 * be installed in different subdirectories of a single JRE installation, 1648 * for space-savings and convenience in testing. 1649 * The intent is explicitly not to provide a full aliasing or predicate 1650 * mechanism. 1651 */ 1652 jint 1653 ReadKnownVMs(const char *jrepath, char * arch, jboolean speculative) 1654 { 1655 FILE *jvmCfg; 1656 char jvmCfgName[MAXPATHLEN+20]; 1657 char line[MAXPATHLEN+20]; 1658 int cnt = 0; 1659 int lineno = 0; 1660 jlong start, end; 1661 int vmType; 1662 char *tmpPtr; 1663 char *altVMName; 1664 char *serverClassVMName; 1665 static char *whiteSpace = " \t"; 1666 if (_launcher_debug) { 1667 start = CounterGet(); 1668 } 1669 1670 strcpy(jvmCfgName, jrepath); 1671 strcat(jvmCfgName, FILESEP "lib" FILESEP); 1672 strcat(jvmCfgName, arch); 1673 strcat(jvmCfgName, FILESEP "jvm.cfg"); 1674 1675 jvmCfg = fopen(jvmCfgName, "r"); 1676 if (jvmCfg == NULL) { 1677 if (!speculative) { 1678 ReportErrorMessage2("Error: could not open `%s'", jvmCfgName, 1679 JNI_TRUE); 1680 exit(1); 1681 } else { 1682 return -1; 1683 } 1684 } 1685 while (fgets(line, sizeof(line), jvmCfg) != NULL) { 1686 vmType = VM_UNKNOWN; 1687 lineno++; 1688 if (line[0] == '#') 1689 continue; 1690 if (line[0] != '-') { 1691 fprintf(stderr, "Warning: no leading - on line %d of `%s'\n", 1692 lineno, jvmCfgName); 1693 } 1694 if (cnt >= knownVMsLimit) { 1695 GrowKnownVMs(cnt); 1696 } 1697 line[strlen(line)-1] = '\0'; /* remove trailing newline */ 1698 tmpPtr = line + strcspn(line, whiteSpace); 1699 if (*tmpPtr == 0) { 1700 fprintf(stderr, "Warning: missing VM type on line %d of `%s'\n", 1701 lineno, jvmCfgName); 1702 } else { 1703 /* Null-terminate this string for strdup below */ 1704 *tmpPtr++ = 0; 1705 tmpPtr += strspn(tmpPtr, whiteSpace); 1706 if (*tmpPtr == 0) { 1707 fprintf(stderr, "Warning: missing VM type on line %d of `%s'\n", 1708 lineno, jvmCfgName); 1709 } else { 1710 if (!strncmp(tmpPtr, "KNOWN", strlen("KNOWN"))) { 1711 vmType = VM_KNOWN; 1712 } else if (!strncmp(tmpPtr, "ALIASED_TO", strlen("ALIASED_TO"))) { 1713 tmpPtr += strcspn(tmpPtr, whiteSpace); 1714 if (*tmpPtr != 0) { 1715 tmpPtr += strspn(tmpPtr, whiteSpace); 1716 } 1717 if (*tmpPtr == 0) { 1718 fprintf(stderr, "Warning: missing VM alias on line %d of `%s'\n", 1719 lineno, jvmCfgName); 1720 } else { 1721 /* Null terminate altVMName */ 1722 altVMName = tmpPtr; 1723 tmpPtr += strcspn(tmpPtr, whiteSpace); 1724 *tmpPtr = 0; 1725 vmType = VM_ALIASED_TO; 1726 } 1727 } else if (!strncmp(tmpPtr, "WARN", strlen("WARN"))) { 1728 vmType = VM_WARN; 1729 } else if (!strncmp(tmpPtr, "IGNORE", strlen("IGNORE"))) { 1730 vmType = VM_IGNORE; 1731 } else if (!strncmp(tmpPtr, "ERROR", strlen("ERROR"))) { 1732 vmType = VM_ERROR; 1733 } else if (!strncmp(tmpPtr, 1734 "IF_SERVER_CLASS", 1735 strlen("IF_SERVER_CLASS"))) { 1736 tmpPtr += strcspn(tmpPtr, whiteSpace); 1737 if (*tmpPtr != 0) { 1738 tmpPtr += strspn(tmpPtr, whiteSpace); 1739 } 1740 if (*tmpPtr == 0) { 1741 fprintf(stderr, "Warning: missing server class VM on line %d of `%s'\n", 1742 lineno, jvmCfgName); 1743 } else { 1744 /* Null terminate server class VM name */ 1745 serverClassVMName = tmpPtr; 1746 tmpPtr += strcspn(tmpPtr, whiteSpace); 1747 *tmpPtr = 0; 1748 vmType = VM_IF_SERVER_CLASS; 1749 } 1750 } else { 1751 fprintf(stderr, "Warning: unknown VM type on line %d of `%s'\n", 1752 lineno, &jvmCfgName[0]); 1753 vmType = VM_KNOWN; 1754 } 1755 } 1756 } 1757 1758 if (_launcher_debug) 1759 printf("jvm.cfg[%d] = ->%s<-\n", cnt, line); 1760 if (vmType != VM_UNKNOWN) { 1761 knownVMs[cnt].name = strdup(line); 1762 knownVMs[cnt].flag = vmType; 1763 switch (vmType) { 1764 default: 1765 break; 1766 case VM_ALIASED_TO: 1767 knownVMs[cnt].alias = strdup(altVMName); 1768 if (_launcher_debug) { 1769 printf(" name: %s vmType: %s alias: %s\n", 1770 knownVMs[cnt].name, "VM_ALIASED_TO", knownVMs[cnt].alias); 1771 } 1772 break; 1773 case VM_IF_SERVER_CLASS: 1774 knownVMs[cnt].server_class = strdup(serverClassVMName); 1775 if (_launcher_debug) { 1776 printf(" name: %s vmType: %s server_class: %s\n", 1777 knownVMs[cnt].name, "VM_IF_SERVER_CLASS", knownVMs[cnt].server_class); 1778 } 1779 break; 1780 } 1781 cnt++; 1782 } 1783 } 1784 fclose(jvmCfg); 1785 knownVMsCount = cnt; 1786 1787 if (_launcher_debug) { 1788 end = CounterGet(); 1789 printf("%ld micro seconds to parse jvm.cfg\n", 1790 (long)(jint)Counter2Micros(end-start)); 1791 } 1792 1793 return cnt; 1794 } 1795 1796 1797 static void 1798 GrowKnownVMs(int minimum) 1799 { 1800 struct vmdesc* newKnownVMs; 1801 int newMax; 1802 1803 newMax = (knownVMsLimit == 0 ? INIT_MAX_KNOWN_VMS : (2 * knownVMsLimit)); 1804 if (newMax <= minimum) { 1805 newMax = minimum; 1806 } 1807 newKnownVMs = (struct vmdesc*) MemAlloc(newMax * sizeof(struct vmdesc)); 1808 if (knownVMs != NULL) { 1809 memcpy(newKnownVMs, knownVMs, knownVMsLimit * sizeof(struct vmdesc)); 1810 } 1811 free(knownVMs); 1812 knownVMs = newKnownVMs; 1813 knownVMsLimit = newMax; 1814 } 1815 1816 1817 /* Returns index of VM or -1 if not found */ 1818 static int 1819 KnownVMIndex(const char* name) 1820 { 1821 int i; 1822 if (strncmp(name, "-J", 2) == 0) name += 2; 1823 for (i = 0; i < knownVMsCount; i++) { 1824 if (!strcmp(name, knownVMs[i].name)) { 1825 return i; 1826 } 1827 } 1828 return -1; 1829 } 1830 1831 static void 1832 FreeKnownVMs() 1833 { 1834 int i; 1835 for (i = 0; i < knownVMsCount; i++) { 1836 free(knownVMs[i].name); 1837 knownVMs[i].name = NULL; 1838 } 1839 free(knownVMs); 1840 } 1841 1842 #endif /* ifndef GAMMA */