| /******************************************************************************* |
| * Copyright (c) 2000, 2018 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.internal; |
| |
| import java.io.*; |
| import java.lang.reflect.*; |
| import java.net.*; |
| import java.util.function.*; |
| import java.util.jar.*; |
| |
| public class Library { |
| |
| /* SWT Version - Mmmm (M=major, mmm=minor) */ |
| |
| /** |
| * SWT Major version number (must be >= 0) |
| */ |
| static int MAJOR_VERSION = 4; |
| |
| /** |
| * SWT Minor version number (must be in the range 0..999) |
| */ |
| static int MINOR_VERSION = 922; |
| |
| /** |
| * SWT revision number (must be >= 0) |
| */ |
| static int REVISION = 20; |
| |
| /** |
| * The JAVA and SWT versions |
| */ |
| public static final int JAVA_VERSION, SWT_VERSION; |
| public static final String USER_HOME; |
| |
| static final String SEPARATOR; |
| static final String DELIMITER; |
| |
| static final String JAVA_LIB_PATH = "java.library.path"; |
| static final String SWT_LIB_PATH = "swt.library.path"; |
| |
| |
| /* 64-bit support */ |
| static final boolean IS_64 = longConst() == (long /*int*/)longConst(); |
| static final String SUFFIX_64 = "-64"; //$NON-NLS-1$ |
| static final String SWT_LIB_DIR; |
| |
| static { |
| DELIMITER = System.getProperty("line.separator"); //$NON-NLS-1$ |
| SEPARATOR = File.separator; |
| USER_HOME = System.getProperty ("user.home"); |
| SWT_LIB_DIR = ".swt" + SEPARATOR + "lib" + SEPARATOR + os() + SEPARATOR + arch(); //$NON-NLS-1$ $NON-NLS-2$ |
| JAVA_VERSION = parseVersion(System.getProperty("java.version")); //$NON-NLS-1$ |
| SWT_VERSION = SWT_VERSION(MAJOR_VERSION, MINOR_VERSION); |
| } |
| |
| static String arch() { |
| String osArch = System.getProperty("os.arch"); //$NON-NLS-1$ |
| if (osArch.equals ("i386") || osArch.equals ("i686")) return "x86"; //$NON-NLS-1$ $NON-NLS-2$ $NON-NLS-3$ |
| if (osArch.equals ("amd64")) return "x86_64"; //$NON-NLS-1$ $NON-NLS-2$ |
| return osArch; |
| } |
| |
| static String os() { |
| String osName = System.getProperty("os.name"); //$NON-NLS-1$ |
| if (osName.equals ("Linux")) return "linux"; //$NON-NLS-1$ $NON-NLS-2$ |
| if (osName.equals ("AIX")) return "aix"; //$NON-NLS-1$ $NON-NLS-2$ |
| if (osName.equals ("Mac OS X")) return "macosx"; //$NON-NLS-1$ $NON-NLS-2$ |
| if (osName.startsWith ("Win")) return "win32"; //$NON-NLS-1$ $NON-NLS-2$ |
| return osName; |
| } |
| |
| static void chmod(String permision, String path) { |
| if (os().equals ("win32")) return; //$NON-NLS-1$ |
| try { |
| Runtime.getRuntime ().exec (new String []{"chmod", permision, path}).waitFor(); //$NON-NLS-1$ |
| } catch (Throwable e) {} |
| } |
| |
| /* Use method instead of in-lined constants to avoid compiler warnings */ |
| static long longConst() { |
| return 0x1FFFFFFFFL; |
| } |
| |
| static int parseVersion(String version) { |
| if (version == null) return 0; |
| int major = 0, minor = 0, micro = 0; |
| int length = version.length(), index = 0, start = 0; |
| while (index < length && Character.isDigit(version.charAt(index))) index++; |
| try { |
| if (start < length) major = Integer.parseInt(version.substring(start, index)); |
| } catch (NumberFormatException e) {} |
| start = ++index; |
| while (index < length && Character.isDigit(version.charAt(index))) index++; |
| try { |
| if (start < length) minor = Integer.parseInt(version.substring(start, index)); |
| } catch (NumberFormatException e) {} |
| start = ++index; |
| while (index < length && Character.isDigit(version.charAt(index))) index++; |
| try { |
| if (start < length) micro = Integer.parseInt(version.substring(start, index)); |
| } catch (NumberFormatException e) {} |
| return JAVA_VERSION(major, minor, micro); |
| } |
| |
| /** |
| * Returns the Java version number as an integer. |
| * |
| * @param major |
| * @param minor |
| * @param micro |
| * @return the version |
| */ |
| public static int JAVA_VERSION (int major, int minor, int micro) { |
| return (major << 16) + (minor << 8) + micro; |
| } |
| |
| /** |
| * Returns the SWT version number as an integer. |
| * |
| * @param major |
| * @param minor |
| * @return the version |
| */ |
| public static int SWT_VERSION (int major, int minor) { |
| return major * 1000 + minor; |
| } |
| |
| /** |
| * Extract file with 'mappedName' into path 'extractToFilePath'. Cleanup leftovers if extract failed. |
| * @param extractToFilePath full path of where the file is to be extacted to, inc name of file, |
| * e.g /home/USER/.swt/lib/linux/x86_64/libswt-MYLIB-gtk-4826.so |
| * @param mappedName file to be searched in jar. |
| * @return true upon success, failure if something went wrong. |
| */ |
| static boolean extract (String extractToFilePath, String mappedName, StringBuilder message) { |
| FileOutputStream os = null; |
| InputStream is = null; |
| File file = new File(extractToFilePath); |
| boolean extracted = false; |
| try { |
| if (!file.exists ()) { |
| is = Library.class.getResourceAsStream ("/" + mappedName); //$NON-NLS-1$ |
| if (is != null) { |
| extracted = true; |
| int read; |
| byte [] buffer = new byte [4096]; |
| os = new FileOutputStream (extractToFilePath); |
| while ((read = is.read (buffer)) != -1) { |
| os.write(buffer, 0, read); |
| } |
| os.close (); |
| is.close (); |
| chmod ("755", extractToFilePath); |
| return true; |
| } |
| } |
| } catch (Throwable e) { |
| try { |
| if (os != null) os.close (); |
| } catch (IOException e1) {} |
| try { |
| if (is != null) is.close (); |
| } catch (IOException e1) {} |
| if (extracted && file.exists ()) file.delete (); |
| } |
| return false; |
| } |
| |
| static boolean isLoadable () { |
| URL url = Platform.class.getClassLoader ().getResource ("org/eclipse/swt/internal/Library.class"); //$NON-NLS-1$ |
| if (!url.getProtocol ().equals ("jar")) { //$NON-NLS-1$ |
| /* SWT is presumably running in a development environment */ |
| return true; |
| } |
| |
| Attributes attributes = null; |
| try { |
| URLConnection connection = url.openConnection(); |
| if (!(connection instanceof JarURLConnection)) { |
| /* should never happen for a "jar:" url */ |
| return false; |
| } |
| JarURLConnection jc = (JarURLConnection) connection; |
| attributes = jc.getMainAttributes(); |
| } catch (IOException e) { |
| /* should never happen for a valid SWT jar with the expected manifest values */ |
| return false; |
| } |
| |
| String os = os (); |
| String arch = arch (); |
| String manifestOS = attributes.getValue ("SWT-OS"); //$NON-NLS-1$ |
| String manifestArch = attributes.getValue ("SWT-Arch"); //$NON-NLS-1$ |
| if (arch.equals (manifestArch) && os.equals (manifestOS)) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static boolean load (String libName, StringBuilder message) { |
| try { |
| if (libName.indexOf (SEPARATOR) != -1) { |
| System.load (libName); |
| } else { |
| System.loadLibrary (libName); |
| } |
| return true; |
| } catch (UnsatisfiedLinkError e) { |
| if (message.length() == 0) message.append(DELIMITER); |
| message.append('\t'); |
| message.append(e.getMessage()); |
| message.append(DELIMITER); |
| } |
| return false; |
| } |
| |
| /** |
| * Loads the shared library that matches the version of the |
| * Java code which is currently running. SWT shared libraries |
| * follow an encoding scheme where the major, minor and revision |
| * numbers are embedded in the library name and this along with |
| * <code>name</code> is used to load the library. If this fails, |
| * <code>name</code> is used in another attempt to load the library, |
| * this time ignoring the SWT version encoding scheme. |
| * |
| * @param name the name of the library to load |
| */ |
| public static void loadLibrary (String name) { |
| loadLibrary (name, true); |
| } |
| |
| /** |
| * Loads the shared library that matches the version of the |
| * Java code which is currently running. SWT shared libraries |
| * follow an encoding scheme where the major, minor and revision |
| * numbers are embedded in the library name and this along with |
| * <code>name</code> is used to load the library. If this fails, |
| * <code>name</code> is used in another attempt to load the library, |
| * this time ignoring the SWT version encoding scheme. |
| * |
| * @param name the name of the library to load |
| * @param mapName true if the name should be mapped, false otherwise |
| */ |
| public static void loadLibrary (String name, boolean mapName) { |
| String prop = System.getProperty ("sun.arch.data.model"); //$NON-NLS-1$ |
| if (prop == null) prop = System.getProperty ("com.ibm.vm.bitmode"); //$NON-NLS-1$ |
| if (prop != null) { |
| if ("32".equals (prop) && IS_64) { //$NON-NLS-1$ |
| throw new UnsatisfiedLinkError ("Cannot load 64-bit SWT libraries on 32-bit JVM"); //$NON-NLS-1$ |
| } |
| if ("64".equals (prop) && !IS_64) { //$NON-NLS-1$ |
| throw new UnsatisfiedLinkError ("Cannot load 32-bit SWT libraries on 64-bit JVM"); //$NON-NLS-1$ |
| } |
| } |
| |
| /* Compute the library name and mapped name */ |
| String libName1, libName2, mappedName1, mappedName2; |
| if (mapName) { |
| String version = getVersionString (); |
| libName1 = name + "-" + Platform.PLATFORM + "-" + version; //$NON-NLS-1$ //$NON-NLS-2$ |
| libName2 = name + "-" + Platform.PLATFORM; //$NON-NLS-1$ |
| mappedName1 = mapLibraryName (libName1); |
| mappedName2 = mapLibraryName (libName2); |
| } else { |
| libName1 = libName2 = mappedName1 = mappedName2 = name; |
| } |
| |
| StringBuilder message = new StringBuilder(); |
| |
| /* Try loading library from swt library path */ |
| String path = System.getProperty (SWT_LIB_PATH); //$NON-NLS-1$ |
| if (path != null) { |
| path = new File (path).getAbsolutePath (); |
| if (load (path + SEPARATOR + mappedName1, message)) return; |
| if (mapName && load (path + SEPARATOR + mappedName2, message)) return; |
| } |
| |
| /* Try loading library from java library path */ |
| if (load (libName1, message)) return; |
| if (mapName && load (libName2, message)) return; |
| |
| /* Try loading library from the tmp directory if swt library path is not specified. |
| * Create the tmp folder if it doesn't exist. Tmp folder looks like this: |
| * ~/.swt/lib/<platform>/<arch>/ |
| */ |
| String fileName1 = mappedName1; |
| String fileName2 = mappedName2; |
| if (path == null) { |
| path = USER_HOME; |
| File dir = new File (path, SWT_LIB_DIR); |
| if ((dir.exists () && dir.isDirectory ()) || dir.mkdirs ()) { // Create if not exist. |
| path = dir.getAbsolutePath (); |
| } else { |
| /* fall back to using the home dir directory */ |
| if (IS_64) { |
| fileName1 = mapLibraryName (libName1 + SUFFIX_64); |
| fileName2 = mapLibraryName (libName2 + SUFFIX_64); |
| } |
| } |
| if (load (path + SEPARATOR + fileName1, message)) return; |
| if (mapName && load (path + SEPARATOR + fileName2, message)) return; |
| } |
| |
| /* Try extracting and loading library from jar. */ |
| if (path != null) { |
| if (extract (path + SEPARATOR + fileName1, mappedName1, message)) { |
| load(path + SEPARATOR + fileName1, message); |
| return; |
| } |
| if (mapName && extract (path + SEPARATOR + fileName2, mappedName2, message)) { |
| load(path + SEPARATOR + fileName2, message); |
| return; |
| } |
| } |
| |
| /* Failed to find the library */ |
| throw new UnsatisfiedLinkError ("Could not load SWT library. Reasons: " + message.toString()); //$NON-NLS-1$ |
| } |
| |
| static String mapLibraryName (String libName) { |
| /* SWT libraries in the Macintosh use the extension .jnilib but the some VMs map to .dylib. */ |
| libName = System.mapLibraryName (libName); |
| String ext = ".dylib"; //$NON-NLS-1$ |
| if (libName.endsWith(ext)) { |
| libName = libName.substring(0, libName.length() - ext.length()) + ".jnilib"; //$NON-NLS-1$ |
| } |
| return libName; |
| } |
| |
| /** |
| * @return String Combined SWT version like 4826 |
| */ |
| public static String getVersionString () { |
| String version = System.getProperty ("swt.version"); //$NON-NLS-1$ |
| if (version == null) { |
| version = "" + MAJOR_VERSION; //$NON-NLS-1$ |
| /* Force 3 digits in minor version number */ |
| if (MINOR_VERSION < 10) { |
| version += "00"; //$NON-NLS-1$ |
| } else { |
| if (MINOR_VERSION < 100) version += "0"; //$NON-NLS-1$ |
| } |
| version += MINOR_VERSION; |
| /* No "r" until first revision */ |
| if (REVISION > 0) version += "r" + REVISION; //$NON-NLS-1$ |
| } |
| return version; |
| } |
| |
| |
| /** |
| * Locates a resource located either in java library path, swt library path, or attempts to extract it from inside swt.jar file. |
| * This function supports a single level subfolder, e.g SubFolder/resource. |
| * |
| * Dev note: (17/12/07) This has been developed and throughly tested on GTK. Designed to work on Cocoa/Win as well, but not tested. |
| * |
| * @param subDir 'null' or a folder name without slashes. E.g Correct: 'mysubdir', incorrect: '/subdir/'. |
| * Platform specific Slashes will be added automatically. |
| * @param resourceName e.g swt-webkitgtk |
| * @param mapResourceName true if you like platform specific mapping applied to resource name. e.g MyLib -> libMyLib-gtk-4826.so |
| */ |
| public static File findResource(String subDir, String resourceName, boolean mapResourceName){ |
| |
| //We construct a 'maybe' subdirectory path. 'Maybe' because if no subDir given, then it's an empty string "". |
| // subdir e.g: subdir |
| String maybeSubDirPath = subDir != null ? subDir + SEPARATOR : ""; // e.g: subdir/ or "" |
| String maybeSubDirPathWithPrefix = subDir != null ? SEPARATOR + maybeSubDirPath : ""; // e.g: /subdir/ or "" |
| final String finalResourceName = mapResourceName ? |
| mapLibraryName(resourceName + "-" + Platform.PLATFORM + "-" + getVersionString ()) // e.g libMyLib-gtk-3826.so |
| : resourceName; |
| |
| // 1) Look for the resource in the java/swt library path(s) |
| // This code commonly finds the resource if the swt project is a required project and the swt binary (for your platform) |
| // project is open in your workplace (found in the JAVA_LIBRARY_PATH) or if you're explicitly specified SWT_LIBRARY_PATH. |
| { |
| Function<String, File> lookForFileInPath = searchPath -> { |
| String classpath = System.getProperty(searchPath); |
| if (classpath != null){ |
| String[] paths = classpath.split(":"); |
| for (String path : paths) { |
| File file = new File(path + SEPARATOR + maybeSubDirPath + finalResourceName); |
| if (file.exists()){ |
| return file; |
| } |
| } |
| } |
| return null; |
| }; |
| File result = null; |
| for (String path : new String[] {JAVA_LIB_PATH,SWT_LIB_PATH}) { |
| result = lookForFileInPath.apply(path); |
| if (result != null) |
| return result; |
| } |
| } |
| |
| // 2) If SWT is ran as OSGI bundle (e.g inside Eclipse), then local resources are extracted to |
| // eclipse/configuration/org.eclipse.osgi/NN/N/.cp/<resource> and we're given a pointer to the file. |
| { |
| // If this is an OSGI bundle look for the resource using getResource |
| URL url = Library.class.getClassLoader().getResource(maybeSubDirPathWithPrefix + finalResourceName); |
| URLConnection connection; |
| try { |
| connection = url.openConnection(); |
| Method getFileURLMethod = connection.getClass().getMethod("getFileURL"); |
| if (getFileURLMethod != null){ |
| // This method does the actual extraction of file to: ../eclipse/configuration/org.eclipse.osgi/NN/N/.cp/<SubDir>/resource.ext |
| URL result = (URL) getFileURLMethod.invoke(connection); |
| return new File(result.toURI()); |
| } |
| } catch (Exception e) { |
| // If any exceptions are thrown the resource cannot be located this way. |
| } |
| } |
| |
| // 3) Need to try to pull the resource out of the swt.jar. |
| // Look for the resource in the user's home directory, (if already extracted in the temp swt folder. (~/.swt/lib...) |
| // Extract from the swt.jar if not there already. |
| { |
| // Developer note: |
| // To test this piece of code, you need to compile SWT into a jar and use it in a test project. E.g |
| // cd ~/git/eclipse.platform.swt.binaries/bundles/org.eclipse.swt.gtk.linux.x86_64/ |
| // mvn clean verify -Pbuild-individual-bundles -Dnative=gtk.linux.x86_64 |
| // then ./target/ will contain org.eclipse.swt.gtk.linux.x86_64-3.106.100-SNAPSHOT.jar (and it's source), |
| // you can copy those into your test swt project and test that your resource is extracted into something like ~/.swt/... |
| // Lastly, if using subDir, you need to edit the build.properties and specify the folder you wish to have included in your jar in the includes. |
| File file = new File (USER_HOME + SEPARATOR + SWT_LIB_DIR + maybeSubDirPathWithPrefix, finalResourceName); |
| if (file.exists()){ |
| return file; |
| } else { // Try to extract file from jar if not found. |
| |
| // Create temp directory if it doesn't exist |
| File tempDir = new File (USER_HOME, SWT_LIB_DIR + maybeSubDirPathWithPrefix); |
| if ((!tempDir.exists () || tempDir.isDirectory ())) { |
| tempDir.mkdirs (); |
| } |
| |
| StringBuilder message = new StringBuilder(""); |
| if (extract(file.getPath(), maybeSubDirPath + finalResourceName, message)) { |
| if (file.exists()) { |
| return file; |
| } |
| } |
| } |
| } |
| throw new UnsatisfiedLinkError("Could not find resource" + resourceName + (subDir != null ? " (in subdirectory: " + subDir + " )" : "")); |
| } |
| |
| |
| } |