001 package net.provision.soap; 002 003 import java.io.*; 004 005 import java.lang.reflect.*; 006 007 008 /** 009 * BrowserLauncher is a class that provides one static method, openURL, which opens the 010 * default web browser for the current user of the system to the given URL. It may 011 * support other protocols depending on the system -- mailto, ftp, etc. -- but that 012 * has not been rigorously tested and is not guaranteed to work. 013 * 014 * <p> 015 * Yes, this is platform-specific code, and yes, it may rely on classes on certain 016 * platforms that are not part of the standard JDK. What we're trying to do, though, 017 * is to take something that's frequently desirable but inherently platform-specific 018 * -- opening a default browser -- and allow programmers (you, for example) to do so 019 * without worrying about dropping into native code or doing anything else similarly 020 * evil. 021 * </p> 022 * 023 * <p> 024 * Anyway, this code is completely in Java and will run on all JDK 1.1-compliant 025 * systems without modification or a need for additional libraries. All classes that 026 * are required on certain platforms to allow this to run are dynamically loaded at 027 * runtime via reflection and, if not found, will not cause this to do anything other 028 * than returning an error when opening the browser. 029 * </p> 030 * 031 * <p> 032 * There are certain system requirements for this class, as it's running through 033 * Runtime.exec(), which is Java's way of making a native system call. Currently, 034 * this requires that a Macintosh have a Finder which supports the GURL event, which 035 * is true for Mac OS 8.0 and 8.1 systems that have the Internet Scripting AppleScript 036 * dictionary installed in the Scripting Additions folder in the Extensions folder 037 * (which is installed by default as far as I know under Mac OS 8.0 and 8.1), and for 038 * all Mac OS 8.5 and later systems. On Windows, it only runs under Win32 systems 039 * (Windows 95, 98, and NT 4.0, as well as later versions of all). On other systems, 040 * this drops back from the inherently platform-sensitive concept of a default browser 041 * and simply attempts to launch Netscape via a shell command. 042 * </p> 043 * 044 * <p> 045 * This code is Copyright 1999-2001 by Eric Albert (ejalbert@cs.stanford.edu) and 046 * may be redistributed or modified in any form without restrictions as long as the 047 * portion of this comment from this paragraph through the end of the comment is not 048 * removed. The author requests that he be notified of any application, applet, or 049 * other binary that makes use of this code, but that's more out of curiosity than 050 * anything and is not required. This software includes no warranty. The author is 051 * not repsonsible for any loss of data or functionality or any adverse or unexpected 052 * effects of using this software. 053 * </p> 054 * 055 * <p> 056 * Credits: <br> 057 * Steven Spencer, JavaWorld magazine (<a 058 * href="http://www.javaworld.com/javaworld/javatips/jw-javatip66.html">Java Tip 059 * 66</a>) <br> 060 * Thanks also to Ron B. Yeh, Eric Shapiro, Ben Engber, Paul Teitlebaum, Andrea 061 * Cantatore, Larry Barowski, Trevor Bedzek, Frank Miedrich, and Ron Rabakukk 062 * </p> 063 * 064 * @author Eric Albert (<a 065 * href="mailto:ejalbert@cs.stanford.edu">ejalbert@cs.stanford.edu</a>) 066 * @version 1.4b1 (Released June 20, 2001) 067 */ 068 public class BrowserLauncher { 069 /** 070 * The Java virtual machine that we are running on. Actually, in most cases we only 071 * care about the operating system, but some operating systems require us to switch 072 * on the VM. 073 */ 074 private static int jvm; 075 076 /** 077 * The browser for the system 078 */ 079 private static Object browser; 080 081 /** 082 * Caches whether any classes, methods, and fields that are not part of the JDK and 083 * need to be dynamically loaded at runtime loaded successfully. 084 * 085 * <p> 086 * Note that if this is <code>false</code>, <code>openURL()</code> will always 087 * return an IOException. 088 * </p> 089 */ 090 private static boolean loadedWithoutErrors; 091 092 /** 093 * The com.apple.mrj.MRJFileUtils class 094 */ 095 private static Class mrjFileUtilsClass; 096 097 /** 098 * The com.apple.mrj.MRJOSType class 099 */ 100 private static Class mrjOSTypeClass; 101 102 /** 103 * The com.apple.MacOS.AEDesc class 104 */ 105 private static Class aeDescClass; 106 107 /** 108 * The <init>(int) method of com.apple.MacOS.AETarget 109 */ 110 private static Constructor aeTargetConstructor; 111 112 /** 113 * The <init>(int, int, int) method of com.apple.MacOS.AppleEvent 114 */ 115 private static Constructor appleEventConstructor; 116 117 /** 118 * The <init>(String) method of com.apple.MacOS.AEDesc 119 */ 120 private static Constructor aeDescConstructor; 121 122 /** 123 * The findFolder method of com.apple.mrj.MRJFileUtils 124 */ 125 private static Method findFolder; 126 127 /** 128 * The getFileCreator method of com.apple.mrj.MRJFileUtils 129 */ 130 private static Method getFileCreator; 131 132 /** 133 * The getFileType method of com.apple.mrj.MRJFileUtils 134 */ 135 private static Method getFileType; 136 137 /** 138 * The openURL method of com.apple.mrj.MRJFileUtils 139 */ 140 private static Method openURL; 141 142 /** 143 * The makeOSType method of com.apple.MacOS.OSUtils 144 */ 145 private static Method makeOSType; 146 147 /** 148 * The putParameter method of com.apple.MacOS.AppleEvent 149 */ 150 private static Method putParameter; 151 152 /** 153 * The sendNoReply method of com.apple.MacOS.AppleEvent 154 */ 155 private static Method sendNoReply; 156 157 /** 158 * Actually an MRJOSType pointing to the System Folder on a Macintosh 159 */ 160 private static Object kSystemFolderType; 161 162 /** 163 * The keyDirectObject AppleEvent parameter type 164 */ 165 private static Integer keyDirectObject; 166 167 /** 168 * The kAutoGenerateReturnID AppleEvent code 169 */ 170 private static Integer kAutoGenerateReturnID; 171 172 /** 173 * The kAnyTransactionID AppleEvent code 174 */ 175 private static Integer kAnyTransactionID; 176 177 /** 178 * The linkage object required for JDirect 3 on Mac OS X. 179 */ 180 private static Object linkage; 181 182 /** 183 * The framework to reference on Mac OS X 184 */ 185 private static final String JDirect_MacOSX = "/System/Library/Frameworks/Carbon.framework/Frameworks/HIToolbox.framework/HIToolbox"; 186 187 /** 188 * JVM constant for MRJ 2.0 189 */ 190 private static final int MRJ_2_0 = 0; 191 192 /** 193 * JVM constant for MRJ 2.1 or later 194 */ 195 private static final int MRJ_2_1 = 1; 196 197 /** 198 * JVM constant for Java on Mac OS X 10.0 (MRJ 3.0) 199 */ 200 private static final int MRJ_3_0 = 3; 201 202 /** 203 * JVM constant for MRJ 3.1 204 */ 205 private static final int MRJ_3_1 = 4; 206 207 /** 208 * JVM constant for any Windows NT JVM 209 */ 210 private static final int WINDOWS_NT = 5; 211 212 /** 213 * JVM constant for any Windows 9x JVM 214 */ 215 private static final int WINDOWS_9x = 6; 216 217 /** 218 * JVM constant for any other platform 219 */ 220 private static final int OTHER = -1; 221 222 /** 223 * The file type of the Finder on a Macintosh. Hardcoding "Finder" would keep 224 * non-U.S. English systems from working properly. 225 */ 226 private static final String FINDER_TYPE = "FNDR"; 227 228 /** 229 * The creator code of the Finder on a Macintosh, which is needed to send 230 * AppleEvents to the application. 231 */ 232 private static final String FINDER_CREATOR = "MACS"; 233 234 /** 235 * The name for the AppleEvent type corresponding to a GetURL event. 236 */ 237 private static final String GURL_EVENT = "GURL"; 238 239 /** 240 * The first parameter that needs to be passed into Runtime.exec() to open the 241 * default web browser on Windows. 242 */ 243 private static final String FIRST_WINDOWS_PARAMETER = "/c"; 244 245 /** 246 * The second parameter for Runtime.exec() on Windows. 247 */ 248 private static final String SECOND_WINDOWS_PARAMETER = "start"; 249 250 /** 251 * The third parameter for Runtime.exec() on Windows. This is a "title" parameter 252 * that the command line expects. Setting this parameter allows URLs containing 253 * spaces to work. 254 */ 255 private static final String THIRD_WINDOWS_PARAMETER = "\"\""; 256 257 /** 258 * The shell parameters for Netscape that opens a given URL in an already-open copy 259 * of Netscape on many command-line systems. 260 */ 261 private static final String NETSCAPE_REMOTE_PARAMETER = "-remote"; 262 private static final String NETSCAPE_OPEN_PARAMETER_START = "'openURL("; 263 private static final String NETSCAPE_OPEN_PARAMETER_END = ")'"; 264 265 /** 266 * The message from any exception thrown throughout the initialization process. 267 */ 268 private static String errorMessage; 269 270 /** 271 * An initialization block that determines the operating system and loads the 272 * necessary runtime data. 273 */ 274 static { 275 loadedWithoutErrors = true; 276 277 String osName = System.getProperty("os.name"); 278 279 if(osName.startsWith("Mac OS")) { 280 String mrjVersion = System.getProperty("mrj.version"); 281 String majorMRJVersion = mrjVersion.substring(0, 3); 282 283 try { 284 double version = Double.valueOf(majorMRJVersion).doubleValue(); 285 286 if(version == 2) { 287 jvm = MRJ_2_0; 288 } else if((version >= 2.1) && (version < 3)) { 289 // Assume that all 2.x versions of MRJ work the same. MRJ 2.1 actually 290 // works via Runtime.exec() and 2.2 supports that but has an openURL() method 291 // as well that we currently ignore. 292 jvm = MRJ_2_1; 293 } else if(version == 3.0) { 294 jvm = MRJ_3_0; 295 } else if(version >= 3.1) { 296 // Assume that all 3.1 and later versions of MRJ work the same. 297 jvm = MRJ_3_1; 298 } else { 299 loadedWithoutErrors = false; 300 errorMessage = "Unsupported MRJ version: " + version; 301 } 302 } catch(NumberFormatException nfe) { 303 loadedWithoutErrors = false; 304 errorMessage = "Invalid MRJ version: " + mrjVersion; 305 } 306 } else if(osName.startsWith("Windows")) { 307 if(osName.indexOf("9") != -1) { 308 jvm = WINDOWS_9x; 309 } else { 310 jvm = WINDOWS_NT; 311 } 312 } else { 313 jvm = OTHER; 314 } 315 316 if(loadedWithoutErrors) { // if we haven't hit any errors yet 317 loadedWithoutErrors = loadClasses(); 318 } 319 } 320 321 /** 322 * This class should be never be instantiated; this just ensures so. 323 */ 324 private BrowserLauncher() { 325 } 326 327 /** 328 * Attempts to open the default web browser to the given URL. 329 * 330 * @param url The URL to open 331 * 332 * @throws IOException If the web browser could not be located or does not run 333 */ 334 public static void openURL(String url) throws IOException { 335 if(!loadedWithoutErrors) { 336 throw new IOException("Exception in finding browser: " + errorMessage); 337 } 338 339 Object browser = locateBrowser(); 340 341 if(browser == null) { 342 throw new IOException("Unable to locate browser: " + errorMessage); 343 } 344 345 switch(jvm) { 346 case MRJ_2_0: 347 348 Object aeDesc = null; 349 350 try { 351 aeDesc = aeDescConstructor.newInstance(new Object[]{ url }); 352 putParameter.invoke(browser, new Object[]{ keyDirectObject, aeDesc }); 353 sendNoReply.invoke(browser, new Object[]{ }); 354 } catch(InvocationTargetException ite) { 355 throw new IOException( 356 "InvocationTargetException while creating AEDesc: " + 357 ite.getMessage()); 358 } catch(IllegalAccessException iae) { 359 throw new IOException( 360 "IllegalAccessException while building AppleEvent: " + 361 iae.getMessage()); 362 } catch(InstantiationException ie) { 363 throw new IOException("InstantiationException while creating AEDesc: " + 364 ie.getMessage()); 365 } finally { 366 aeDesc = null; // Encourage it to get disposed if it was created 367 browser = null; // Ditto 368 } 369 370 break; 371 372 case MRJ_2_1: 373 Runtime.getRuntime().exec(new String[]{ (String)browser, url }); 374 375 break; 376 377 case MRJ_3_0: 378 379 int[] instance = new int[1]; 380 int result = ICStart(instance, 0); 381 382 if(result == 0) { 383 int[] selectionStart = new int[]{ 0 }; 384 byte[] urlBytes = url.getBytes(); 385 int[] selectionEnd = new int[]{ urlBytes.length }; 386 result = ICLaunchURL(instance[0], new byte[]{ 0 }, urlBytes, 387 urlBytes.length, selectionStart, selectionEnd); 388 389 if(result == 0) { 390 // Ignore the return value; the URL was launched successfully 391 // regardless of what happens here. 392 ICStop(instance); 393 } else { 394 throw new IOException("Unable to launch URL: " + result); 395 } 396 } else { 397 throw new IOException("Unable to create an Internet Config instance: " + 398 result); 399 } 400 401 break; 402 403 case MRJ_3_1: 404 405 try { 406 openURL.invoke(null, new Object[]{ url }); 407 } catch(InvocationTargetException ite) { 408 throw new IOException( 409 "InvocationTargetException while calling openURL: " + 410 ite.getMessage()); 411 } catch(IllegalAccessException iae) { 412 throw new IOException("IllegalAccessException while calling openURL: " + 413 iae.getMessage()); 414 } 415 416 break; 417 418 case WINDOWS_NT: 419 case WINDOWS_9x: 420 421 // Add quotes around the URL to allow ampersands and other special 422 // characters to work. 423 Process process = Runtime.getRuntime().exec(new String[]{ 424 (String)browser, FIRST_WINDOWS_PARAMETER, SECOND_WINDOWS_PARAMETER, 425 THIRD_WINDOWS_PARAMETER, '"' + url + '"' 426 }); 427 428 // This avoids a memory leak on some versions of Java on Windows. 429 // That's hinted at in <http://developer.java.sun.com/developer/qow/archive/68/>. 430 try { 431 process.waitFor(); 432 process.exitValue(); 433 } catch(InterruptedException ie) { 434 throw new IOException("InterruptedException while launching browser: " + 435 ie.getMessage()); 436 } 437 438 break; 439 440 case OTHER: 441 442 // Assume that we're on Unix and that Netscape is installed 443 // First, attempt to open the URL in a currently running session of Netscape 444 process = Runtime.getRuntime().exec(new String[]{ 445 (String)browser, NETSCAPE_REMOTE_PARAMETER, 446 447 NETSCAPE_OPEN_PARAMETER_START + url + NETSCAPE_OPEN_PARAMETER_END 448 }); 449 450 try { 451 int exitCode = process.waitFor(); 452 453 if(exitCode != 0) { // if Netscape was not open 454 Runtime.getRuntime().exec(new String[]{ (String)browser, url }); 455 } 456 } catch(InterruptedException ie) { 457 throw new IOException("InterruptedException while launching browser: " + 458 ie.getMessage()); 459 } 460 461 break; 462 463 default: 464 465 // This should never occur, but if it does, we'll try the simplest thing possible 466 Runtime.getRuntime().exec(new String[]{ (String)browser, url }); 467 468 break; 469 } 470 } 471 472 /** 473 * DOCUMENT ME! 474 * 475 * @param instance DOCUMENT ME! 476 * @param hint DOCUMENT ME! 477 * @param data DOCUMENT ME! 478 * @param len DOCUMENT ME! 479 * @param selectionStart DOCUMENT ME! 480 * @param selectionEnd DOCUMENT ME! 481 * 482 * @return DOCUMENT ME! 483 */ 484 private static native int ICLaunchURL(int instance, byte[] hint, byte[] data, 485 int len, int[] selectionStart, int[] selectionEnd); 486 487 /** 488 * Methods required for Mac OS X. The presence of native methods does not cause any 489 * problems on other platforms. 490 * 491 * @param instance DOCUMENT ME! 492 * @param signature DOCUMENT ME! 493 * 494 * @return DOCUMENT ME! 495 */ 496 private static native int ICStart(int[] instance, int signature); 497 498 /** 499 * DOCUMENT ME! 500 * 501 * @param instance DOCUMENT ME! 502 * 503 * @return DOCUMENT ME! 504 */ 505 private static native int ICStop(int[] instance); 506 507 /** 508 * Called by a static initializer to load any classes, fields, and methods required 509 * at runtime to locate the user's web browser. 510 * 511 * @return <code>true</code> if all intialization succeeded <code>false</code> 512 * if any portion of the initialization failed 513 */ 514 private static boolean loadClasses() { 515 switch(jvm) { 516 case MRJ_2_0: 517 518 try { 519 Class aeTargetClass = Class.forName("com.apple.MacOS.AETarget"); 520 Class osUtilsClass = Class.forName("com.apple.MacOS.OSUtils"); 521 Class appleEventClass = Class.forName("com.apple.MacOS.AppleEvent"); 522 Class aeClass = Class.forName("com.apple.MacOS.ae"); 523 aeDescClass = Class.forName("com.apple.MacOS.AEDesc"); 524 525 aeTargetConstructor = aeTargetClass.getDeclaredConstructor(new Class[]{ 526 int.class 527 }); 528 appleEventConstructor = appleEventClass.getDeclaredConstructor(new Class[]{ 529 int.class, int.class, aeTargetClass, int.class, int.class 530 }); 531 aeDescConstructor = aeDescClass.getDeclaredConstructor(new Class[]{ 532 String.class 533 }); 534 535 makeOSType = osUtilsClass.getDeclaredMethod("makeOSType", 536 new Class[]{ String.class }); 537 putParameter = appleEventClass.getDeclaredMethod("putParameter", 538 new Class[]{ int.class, aeDescClass }); 539 sendNoReply = appleEventClass.getDeclaredMethod("sendNoReply", 540 new Class[]{ }); 541 542 Field keyDirectObjectField = aeClass.getDeclaredField("keyDirectObject"); 543 keyDirectObject = (Integer)keyDirectObjectField.get(null); 544 545 Field autoGenerateReturnIDField = appleEventClass.getDeclaredField( 546 "kAutoGenerateReturnID"); 547 kAutoGenerateReturnID = (Integer)autoGenerateReturnIDField.get(null); 548 549 Field anyTransactionIDField = appleEventClass.getDeclaredField( 550 "kAnyTransactionID"); 551 kAnyTransactionID = (Integer)anyTransactionIDField.get(null); 552 } catch(ClassNotFoundException cnfe) { 553 errorMessage = cnfe.getMessage(); 554 555 return false; 556 } catch(NoSuchMethodException nsme) { 557 errorMessage = nsme.getMessage(); 558 559 return false; 560 } catch(NoSuchFieldException nsfe) { 561 errorMessage = nsfe.getMessage(); 562 563 return false; 564 } catch(IllegalAccessException iae) { 565 errorMessage = iae.getMessage(); 566 567 return false; 568 } 569 570 break; 571 572 case MRJ_2_1: 573 574 try { 575 mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils"); 576 mrjOSTypeClass = Class.forName("com.apple.mrj.MRJOSType"); 577 578 Field systemFolderField = mrjFileUtilsClass.getDeclaredField( 579 "kSystemFolderType"); 580 kSystemFolderType = systemFolderField.get(null); 581 findFolder = mrjFileUtilsClass.getDeclaredMethod("findFolder", 582 new Class[]{ mrjOSTypeClass }); 583 getFileCreator = mrjFileUtilsClass.getDeclaredMethod("getFileCreator", 584 new Class[]{ File.class }); 585 getFileType = mrjFileUtilsClass.getDeclaredMethod("getFileType", 586 new Class[]{ File.class }); 587 } catch(ClassNotFoundException cnfe) { 588 errorMessage = cnfe.getMessage(); 589 590 return false; 591 } catch(NoSuchFieldException nsfe) { 592 errorMessage = nsfe.getMessage(); 593 594 return false; 595 } catch(NoSuchMethodException nsme) { 596 errorMessage = nsme.getMessage(); 597 598 return false; 599 } catch(SecurityException se) { 600 errorMessage = se.getMessage(); 601 602 return false; 603 } catch(IllegalAccessException iae) { 604 errorMessage = iae.getMessage(); 605 606 return false; 607 } 608 609 break; 610 611 case MRJ_3_0: 612 613 try { 614 Class linker = Class.forName("com.apple.mrj.jdirect.Linker"); 615 Constructor constructor = linker.getConstructor(new Class[]{ Class.class }); 616 linkage = constructor.newInstance(new Object[]{ BrowserLauncher.class }); 617 } catch(ClassNotFoundException cnfe) { 618 errorMessage = cnfe.getMessage(); 619 620 return false; 621 } catch(NoSuchMethodException nsme) { 622 errorMessage = nsme.getMessage(); 623 624 return false; 625 } catch(InvocationTargetException ite) { 626 errorMessage = ite.getMessage(); 627 628 return false; 629 } catch(InstantiationException ie) { 630 errorMessage = ie.getMessage(); 631 632 return false; 633 } catch(IllegalAccessException iae) { 634 errorMessage = iae.getMessage(); 635 636 return false; 637 } 638 639 break; 640 641 case MRJ_3_1: 642 643 try { 644 mrjFileUtilsClass = Class.forName("com.apple.mrj.MRJFileUtils"); 645 openURL = mrjFileUtilsClass.getDeclaredMethod("openURL", 646 new Class[]{ String.class }); 647 } catch(ClassNotFoundException cnfe) { 648 errorMessage = cnfe.getMessage(); 649 650 return false; 651 } catch(NoSuchMethodException nsme) { 652 errorMessage = nsme.getMessage(); 653 654 return false; 655 } 656 657 break; 658 659 default: 660 break; 661 } 662 663 return true; 664 } 665 666 /** 667 * Attempts to locate the default web browser on the local system. Caches results 668 * so it only locates the browser once for each use of this class per JVM instance. 669 * 670 * @return The browser for the system. Note that this may not be what you would 671 * consider to be a standard web browser; instead, it's the application 672 * that gets called to open the default web browser. In some cases, 673 * this will be a non-String object that provides the means of calling 674 * the default browser. 675 */ 676 private static Object locateBrowser() { 677 if(browser != null) { 678 return browser; 679 } 680 681 switch(jvm) { 682 case MRJ_2_0: 683 684 try { 685 Integer finderCreatorCode = (Integer)makeOSType.invoke(null, 686 new Object[]{ FINDER_CREATOR }); 687 Object aeTarget = aeTargetConstructor.newInstance(new Object[]{ 688 finderCreatorCode 689 }); 690 Integer gurlType = (Integer)makeOSType.invoke(null, 691 new Object[]{ GURL_EVENT }); 692 Object appleEvent = appleEventConstructor.newInstance(new Object[]{ 693 gurlType, gurlType, aeTarget, kAutoGenerateReturnID, 694 kAnyTransactionID 695 }); 696 697 // Don't set browser = appleEvent because then the next time we call 698 // locateBrowser(), we'll get the same AppleEvent, to which we'll already have 699 // added the relevant parameter. Instead, regenerate the AppleEvent every time. 700 // There's probably a way to do this better; if any has any ideas, please let 701 // me know. 702 return appleEvent; 703 } catch(IllegalAccessException iae) { 704 browser = null; 705 errorMessage = iae.getMessage(); 706 707 return browser; 708 } catch(InstantiationException ie) { 709 browser = null; 710 errorMessage = ie.getMessage(); 711 712 return browser; 713 } catch(InvocationTargetException ite) { 714 browser = null; 715 errorMessage = ite.getMessage(); 716 717 return browser; 718 } 719 720 case MRJ_2_1: 721 722 File systemFolder; 723 724 try { 725 systemFolder = (File)findFolder.invoke(null, 726 new Object[]{ kSystemFolderType }); 727 } catch(IllegalArgumentException iare) { 728 browser = null; 729 errorMessage = iare.getMessage(); 730 731 return browser; 732 } catch(IllegalAccessException iae) { 733 browser = null; 734 errorMessage = iae.getMessage(); 735 736 return browser; 737 } catch(InvocationTargetException ite) { 738 browser = null; 739 errorMessage = ite.getTargetException().getClass() + ": " + 740 ite.getTargetException().getMessage(); 741 742 return browser; 743 } 744 745 String[] systemFolderFiles = systemFolder.list(); 746 747 // Avoid a FilenameFilter because that can't be stopped mid-list 748 for(int i = 0; i < systemFolderFiles.length; i++) { 749 try { 750 File file = new File(systemFolder, systemFolderFiles[i]); 751 752 if(!file.isFile()) { 753 continue; 754 } 755 756 // We're looking for a file with a creator code of 'MACS' and 757 // a type of 'FNDR'. Only requiring the type results in non-Finder 758 // applications being picked up on certain Mac OS 9 systems, 759 // especially German ones, and sending a GURL event to those 760 // applications results in a logout under Multiple Users. 761 Object fileType = getFileType.invoke(null, new Object[]{ file }); 762 763 if(FINDER_TYPE.equals(fileType.toString())) { 764 Object fileCreator = getFileCreator.invoke(null, 765 new Object[]{ file }); 766 767 if(FINDER_CREATOR.equals(fileCreator.toString())) { 768 browser = file.toString(); // Actually the Finder, but that's OK 769 770 return browser; 771 } 772 } 773 } catch(IllegalArgumentException iare) { 774 browser = browser; 775 errorMessage = iare.getMessage(); 776 777 return null; 778 } catch(IllegalAccessException iae) { 779 browser = null; 780 errorMessage = iae.getMessage(); 781 782 return browser; 783 } catch(InvocationTargetException ite) { 784 browser = null; 785 errorMessage = ite.getTargetException().getClass() + ": " + 786 ite.getTargetException().getMessage(); 787 788 return browser; 789 } 790 } 791 792 browser = null; 793 794 break; 795 796 case MRJ_3_0: 797 case MRJ_3_1: 798 browser = ""; // Return something non-null 799 800 break; 801 802 case WINDOWS_NT: 803 browser = "cmd.exe"; 804 805 break; 806 807 case WINDOWS_9x: 808 browser = "command.com"; 809 810 break; 811 812 case OTHER:default: 813 browser = "netscape"; 814 815 break; 816 } 817 818 return browser; 819 } 820 }