/** * Copyright 2010 JogAmp Community. All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, are * permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this list of * conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, this list * of conditions and the following disclaimer in the documentation and/or other materials * provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * The views and conclusions contained in the software and documentation are those of the * authors and should not be interpreted as representing official policies, either expressed * or implied, of JogAmp Community. */ package com.jogamp.common.util; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.Closeable; import java.io.File; import java.io.FileOutputStream; import java.io.FilePermission; import java.io.FileWriter; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.PrintStream; import java.lang.reflect.Constructor; import java.net.URISyntaxException; import java.net.URL; import java.net.URLConnection; import java.nio.ByteBuffer; import java.util.regex.Pattern; import jogamp.common.Debug; import jogamp.common.os.AndroidUtils; import jogamp.common.os.PlatformPropsImpl; import com.jogamp.common.net.AssetURLContext; import com.jogamp.common.net.Uri; import com.jogamp.common.nio.Buffers; import com.jogamp.common.os.MachineDescription; import com.jogamp.common.os.Platform; public class IOUtil { public static final boolean DEBUG = Debug.debug("IOUtil"); /** Std. temporary directory property key java.io.tmpdir. */ private static final String java_io_tmpdir_propkey = "java.io.tmpdir"; private static final String user_home_propkey = "user.home"; private static final String XDG_CACHE_HOME_envkey = "XDG_CACHE_HOME"; /** Subdirectory within platform's temporary root directory where all JogAmp related temp files are being stored: {@code jogamp} */ public static final String tmpSubDir = "jogamp"; private IOUtil() {} /** * Since usage of {@link java.io.FileOutputStream} is considered security critical, * we need to check it's availability for each use. *

* In case a SecurityManager is installed, privileged access is required. *

* * @return the constructor of {@link java.io.FileOutputStream} if available and * no SecurityManager is installed or privileged access is granted. * Otherwise null. * */ private static final Constructor getFOSCtor() { Constructor _fosCtor; Throwable _t; try { _fosCtor = ReflectionUtil.getConstructor("java.io.FileOutputStream", new Class[] { File.class }, true, IOUtil.class.getClassLoader()); _t = null; } catch (final Throwable t) { _fosCtor = null; _t = t; } if(DEBUG) { System.err.println("IOUtil: java.io.FileOutputStream available: "+(null != _fosCtor)); if(null!=_t) { _t.printStackTrace(); } } return _fosCtor; } /*** * * STREAM COPY STUFF * */ /** * Copy the specified URL resource to the specified output file. The total * number of bytes written is returned. Both streams are closed upon completion. * * @param conn the open URLConnection * @param outFile the destination * @return * @throws IOException */ public static int copyURLConn2File(final URLConnection conn, final File outFile) throws IOException { conn.connect(); // redundant int totalNumBytes = 0; final InputStream in = new BufferedInputStream(conn.getInputStream()); try { totalNumBytes = copyStream2File(in, outFile, conn.getContentLength()); } finally { in.close(); } return totalNumBytes; } /** * Copy the specified input stream to the specified output file. The total * number of bytes written is returned. Both streams are closed upon completion. * * @param in the source * @param outFile the destination * @param totalNumBytes informal number of expected bytes, maybe used for user feedback while processing. -1 if unknown * @return * @throws IOException */ public static int copyStream2File(final InputStream in, final File outFile, int totalNumBytes) throws IOException { final OutputStream out = new BufferedOutputStream(new FileOutputStream(outFile)); try { totalNumBytes = copyStream2Stream(in, out, totalNumBytes); } finally { out.close(); } return totalNumBytes; } /** * Copy the specified input stream to the specified output stream. The total * number of bytes written is returned. * * @param in the source * @param out the destination * @param totalNumBytes informal number of expected bytes, maybe used for user feedback while processing. -1 if unknown * @return * @throws IOException */ public static int copyStream2Stream(final InputStream in, final OutputStream out, final int totalNumBytes) throws IOException { return copyStream2Stream(Platform.getMachineDescription().pageSizeInBytes(), in, out, totalNumBytes); } /** * Copy the specified input stream to the specified output stream. The total * number of bytes written is returned. * * @param bufferSize the intermediate buffer size, should be {@link MachineDescription#pageSizeInBytes()} for best performance. * @param in the source * @param out the destination * @param totalNumBytes informal number of expected bytes, maybe used for user feedback while processing. -1 if unknown * @return * @throws IOException */ public static int copyStream2Stream(final int bufferSize, final InputStream in, final OutputStream out, final int totalNumBytes) throws IOException { final byte[] buf = new byte[bufferSize]; int numBytes = 0; while (true) { int count; if ((count = in.read(buf)) == -1) { break; } out.write(buf, 0, count); numBytes += count; } return numBytes; } /** * Copy the specified input stream to a byte array, which is being returned. */ public static byte[] copyStream2ByteArray(InputStream stream) throws IOException { if( !(stream instanceof BufferedInputStream) ) { stream = new BufferedInputStream(stream); } int totalRead = 0; int avail = stream.available(); byte[] data = new byte[avail]; int numRead = 0; do { if (totalRead + avail > data.length) { final byte[] newData = new byte[totalRead + avail]; System.arraycopy(data, 0, newData, 0, totalRead); data = newData; } numRead = stream.read(data, totalRead, avail); if (numRead >= 0) { totalRead += numRead; } avail = stream.available(); } while (avail > 0 && numRead >= 0); // just in case the announced avail > totalRead if (totalRead != data.length) { final byte[] newData = new byte[totalRead]; System.arraycopy(data, 0, newData, 0, totalRead); data = newData; } return data; } /** * Copy the specified input stream to a NIO ByteBuffer w/ native byte order, which is being returned. *

The implementation creates the ByteBuffer w/ {@link #copyStream2ByteArray(InputStream)}'s returned byte array.

* * @param stream input stream, which will be wrapped into a BufferedInputStream, if not already done. */ public static ByteBuffer copyStream2ByteBuffer(final InputStream stream) throws IOException { return copyStream2ByteBuffer(stream, -1); } /** * Copy the specified input stream to a NIO ByteBuffer w/ native byte order, which is being returned. *

The implementation creates the ByteBuffer w/ {@link #copyStream2ByteArray(InputStream)}'s returned byte array.

* * @param stream input stream, which will be wrapped into a BufferedInputStream, if not already done. * @param initialCapacity initial buffer capacity in bytes, if > available bytes */ public static ByteBuffer copyStream2ByteBuffer(InputStream stream, int initialCapacity) throws IOException { if( !(stream instanceof BufferedInputStream) ) { stream = new BufferedInputStream(stream); } int avail = stream.available(); if( initialCapacity < avail ) { initialCapacity = avail; } final MachineDescription machine = Platform.getMachineDescription(); ByteBuffer data = Buffers.newDirectByteBuffer( machine.pageAlignedSize( initialCapacity ) ); final byte[] chunk = new byte[machine.pageSizeInBytes()]; int chunk2Read = Math.min(machine.pageSizeInBytes(), avail); int numRead = 0; do { if (avail > data.remaining()) { final ByteBuffer newData = Buffers.newDirectByteBuffer( machine.pageAlignedSize(data.position() + avail) ); newData.put(data); data = newData; } numRead = stream.read(chunk, 0, chunk2Read); if (numRead > 0) { data.put(chunk, 0, numRead); } avail = stream.available(); chunk2Read = Math.min(machine.pageSizeInBytes(), avail); } while ( numRead > 0 ); // EOS: -1 == numRead, EOF maybe reached earlier w/ 0 == numRead data.flip(); return data; } /*** * * RESOURCE / FILE NAME STUFF * */ private static final Pattern patternSingleBS = Pattern.compile("\\\\{1}"); /** * * @param path * @param startWithSlash * @param endWithSlash * @return * @throws URISyntaxException if path is empty or has no parent directory available while resolving ../ */ public static String slashify(final String path, final boolean startWithSlash, final boolean endWithSlash) throws URISyntaxException { String p = patternSingleBS.matcher(path).replaceAll("/"); if (startWithSlash && !p.startsWith("/")) { p = "/" + p; } if (endWithSlash && !p.endsWith("/")) { p = p + "/"; } return cleanPathString(p); } /** * Returns the lowercase suffix of the given file name (the text * after the last '.' in the file name). Returns null if the file * name has no suffix. Only operates on the given file name; * performs no I/O operations. * * @param file name of the file * @return lowercase suffix of the file name * @throws NullPointerException if file is null */ public static String getFileSuffix(final File file) { return getFileSuffix(file.getName()); } /** * Returns the lowercase suffix of the given file name (the text * after the last '.' in the file name). Returns null if the file * name has no suffix. Only operates on the given file name; * performs no I/O operations. * * @param filename name of the file * @return lowercase suffix of the file name * @throws NullPointerException if filename is null */ public static String getFileSuffix(final String filename) { final int lastDot = filename.lastIndexOf('.'); if (lastDot < 0) { return null; } return toLowerCase(filename.substring(lastDot + 1)); } private static String toLowerCase(final String arg) { if (arg == null) { return null; } return arg.toLowerCase(); } /*** * @param file * @param allowOverwrite * @return outputStream The resulting output stream * @throws IOException if the file already exists and allowOverwrite is false, * the class {@link java.io.FileOutputStream} is not accessible or * the user does not have sufficient rights to access the local filesystem. */ public static FileOutputStream getFileOutputStream(final File file, final boolean allowOverwrite) throws IOException { final Constructor fosCtor = getFOSCtor(); if(null == fosCtor) { throw new IOException("Cannot open file (" + file + ") for writing, FileOutputStream feature not available."); } if (file.exists() && !allowOverwrite) { throw new IOException("File already exists (" + file + ") and overwrite=false"); } try { return (FileOutputStream) fosCtor.newInstance(new Object[] { file }); } catch (final Exception e) { throw new IOException("error opening " + file + " for write. ", e); } } public static String getClassFileName(final String clazzBinName) { // or return clazzBinName.replace('.', File.separatorChar) + ".class"; ? return clazzBinName.replace('.', '/') + ".class"; } /** * @param clazzBinName com.jogamp.common.util.cache.TempJarCache * @param cl ClassLoader to locate the JarFile * @return jar:file:/usr/local/projects/JOGL/gluegen/build-x86_64/gluegen-rt.jar!/com/jogamp/common/util/cache/TempJarCache.class * @throws IOException if the jar file could not been found by the ClassLoader */ public static URL getClassURL(final String clazzBinName, final ClassLoader cl) throws IOException { final URL url = cl.getResource(getClassFileName(clazzBinName)); if(null == url) { throw new IOException("Cannot not find: "+clazzBinName); } return url; } /** * Returns the basename of the given fname w/o directory part * @throws URISyntaxException if path is empty or has no parent directory available while resolving ../ */ public static String getBasename(String fname) throws URISyntaxException { fname = slashify(fname, false /* startWithSlash */, false /* endWithSlash */); final int lios = fname.lastIndexOf('/'); // strip off dirname if(lios>=0) { fname = fname.substring(lios+1); } return fname; } /** * Returns unified '/' dirname including the last '/' * @throws URISyntaxException if path is empty or has no parent directory available while resolving ../ */ public static String getDirname(String fname) throws URISyntaxException { fname = slashify(fname, false /* startWithSlash */, false /* endWithSlash */); final int lios = fname.lastIndexOf('/'); // strip off dirname if(lios>=0) { fname = fname.substring(0, lios+1); } return fname; } /*** * * RESOURCE LOCATION STUFF * */ /** * Helper compound associating a class instance and resource paths * to be {@link #resolve(int) resolved} at a later time. */ public static class ClassResources { /** Class instance used to {@link #resolve(int)} the {@link #resourcePaths}. */ public final Class contextCL; /** Resource paths, see {@link #resolve(int)}. */ public final String[] resourcePaths; /** Returns the number of resources, i.e. resourcePaths.length. */ public final int resourceCount() { return resourcePaths.length; } /** * @param contextCL class instance to {@link #resolve(int)} {@link #resourcePaths}. * @param resourcePaths array of strings denominating multiple resource paths. None shall be null. */ public ClassResources(final Class contextCL, final String[] resourcePaths) { for(int i=resourcePaths.length-1; i>=0; i--) { if( null == resourcePaths[i] ) { throw new IllegalArgumentException("resourcePath["+i+"] is null"); } } this.contextCL = contextCL; this.resourcePaths = resourcePaths; } /** * Resolving one of the {@link #resourcePaths} indexed by uriIndex using {@link #contextCL} and {@link IOUtil#getResource(Class, String)}. * @throws ArrayIndexOutOfBoundsException if uriIndex is < 0 or >= {@link #resourceCount()}. */ public URLConnection resolve(final int uriIndex) throws ArrayIndexOutOfBoundsException { return getResource(contextCL, resourcePaths[uriIndex]); } } /** * Locating a resource using {@link #getResource(String, ClassLoader)}: * * *

* Returns the resolved and open URLConnection or null if not found. *

* * @see #getResource(String, ClassLoader) * @see ClassLoader#getResource(String) * @see ClassLoader#getSystemResource(String) */ public static URLConnection getResource(final Class context, final String resourcePath) { if(null == resourcePath) { return null; } final ClassLoader contextCL = (null!=context)?context.getClassLoader():IOUtil.class.getClassLoader(); URLConnection conn = null; if(null != context) { // scoping the path within the class's package final String className = context.getName().replace('.', '/'); final int lastSlash = className.lastIndexOf('/'); if (lastSlash >= 0) { final String pkgName = className.substring(0, lastSlash + 1); conn = getResource(pkgName + resourcePath, contextCL); if(DEBUG) { System.err.println("IOUtil: found <"+resourcePath+"> within class package <"+pkgName+"> of given class <"+context.getName()+">: "+(null!=conn)); } } } else if(DEBUG) { System.err.println("IOUtil: null context"); } if(null == conn) { conn = getResource(resourcePath, contextCL); if(DEBUG) { System.err.println("IOUtil: found <"+resourcePath+"> by classloader: "+(null!=conn)); } } return conn; } /** * Locating a resource using the ClassLoader's facilities. *

* Returns the resolved and connected URLConnection or null if not found. *

* * @see ClassLoader#getResource(String) * @see ClassLoader#getSystemResource(String) * @see URL#URL(String) * @see File#File(String) */ public static URLConnection getResource(final String resourcePath, final ClassLoader cl) { if(null == resourcePath) { return null; } if(DEBUG) { System.err.println("IOUtil: locating <"+resourcePath+">, has cl: "+(null!=cl)); } if(resourcePath.startsWith(AssetURLContext.asset_protocol_prefix)) { try { return AssetURLContext.createURL(resourcePath, cl).openConnection(); } catch (final IOException ioe) { if(DEBUG) { System.err.println("IOUtil: Caught Exception:"); ioe.printStackTrace(); } return null; } } else { try { return AssetURLContext.resolve(resourcePath, cl); } catch (final IOException ioe) { if(DEBUG) { System.err.println("IOUtil: Caught Exception:"); ioe.printStackTrace(); } } } return null; } /** * Generates a path for the 'relativeFile' relative to the 'baseLocation'. * * @param baseLocation denotes a directory * @param relativeFile denotes a relative file to the baseLocation * @throws URISyntaxException if path is empty or has no parent directory available while resolving ../ */ public static String getRelativeOf(final File baseLocation, final String relativeFile) throws URISyntaxException { if(null == relativeFile) { return null; } if (baseLocation != null) { final File file = new File(baseLocation, relativeFile); // Handle things on Windows return slashify(file.getPath(), false /* startWithSlash */, false /* endWithSlash */); } return null; } /** * @param path assuming a slashified path beginning with "/" as it's root directory, either denotes a file or directory. * @return parent of path * @throws URISyntaxException if path is empty or has no parent directory available */ public static String getParentOf(final String path) throws URISyntaxException { final int pl = null!=path ? path.length() : 0; if(pl == 0) { throw new IllegalArgumentException("path is empty <"+path+">"); } final int e = path.lastIndexOf("/"); if( e < 0 ) { throw new URISyntaxException(path, "path contains no '/'"); } if( e == 0 ) { // path is root directory throw new URISyntaxException(path, "path has no parents"); } if( e < pl - 1 ) { // path is file, return it's parent directory return path.substring(0, e+1); } final int j = path.lastIndexOf("!") + 1; // '!' Separates JARFile entry -> local start of path // path is a directory .. final int p = path.lastIndexOf("/", e-1); if( p >= j) { return path.substring(0, p+1); } throw new URISyntaxException(path, "parent of path contains no '/'"); } /** * @param path assuming a slashified path beginning with "/" as it's root directory, either denotes a file or directory. * @return clean path string where ../ and ./ is resolved. * @throws URISyntaxException if path is empty or has no parent directory available while resolving ../ */ public static String cleanPathString(String path) throws URISyntaxException { int idx; while ( ( idx = path.indexOf("../") ) >= 0 ) { path = getParentOf(path.substring(0, idx)) + path.substring(idx+3); } while ( ( idx = path.indexOf("./") ) >= 0 ) { path = path.substring(0, idx) + path.substring(idx+2); } return path; } public static final Pattern patternSpaceEnc = Pattern.compile("%20"); /** * If uri is a file scheme * implementation returns {@link Uri#toFile()}.{@link File#getPath()}. *

* Otherwise it returns the {@link URI#toASCIIString()} encoded URI. *

*/ public static String getUriFilePathOrASCII(final Uri uri) { if( uri.isFileScheme() ) { return uri.toFile().getPath(); } else { return uri.toASCIIString().get(); } } /** * Returns the connected URLConnection, or null if not url is not available */ public static URLConnection openURL(final URL url) { return openURL(url, "."); } /** * Returns the connected URLConnection, or null if not url is not available */ public static URLConnection openURL(final URL url, final String dbgmsg) { if(null!=url) { try { final URLConnection c = url.openConnection(); c.connect(); // redundant if(DEBUG) { System.err.println("IOUtil: urlExists("+url+") ["+dbgmsg+"] - true"); } return c; } catch (final IOException ioe) { if(DEBUG) { System.err.println("IOUtil: urlExists("+url+") ["+dbgmsg+"] - false - "+ioe.getClass().getSimpleName()+": "+ioe.getMessage()); ioe.printStackTrace(); } } } else if(DEBUG) { System.err.println("IOUtil: no url - urlExists(null) ["+dbgmsg+"]"); } return null; } private static String getShellSuffix() { switch(PlatformPropsImpl.OS_TYPE) { case WINDOWS: return ".bat"; default: return ".sh"; } } private static String getShellCode() { switch(PlatformPropsImpl.OS_TYPE) { case WINDOWS: return "echo off"+PlatformPropsImpl.NEWLINE; default: return null; } } private static boolean getOSHasNoexecFS() { switch(PlatformPropsImpl.OS_TYPE) { case OPENKODE: return false; default: return true; } } /** * @see Free-Desktop - XDG Base Directory Specification */ private static boolean getOSHasFreeDesktopXDG() { switch(PlatformPropsImpl.OS_TYPE) { case ANDROID: case MACOS: case WINDOWS: case OPENKODE: return false; default: return true; } } /** * Test whether {@code file} exists and matches the given requirements * * @param file * @param shallBeDir * @param shallBeWritable * @return */ public static boolean testFile(final File file, final boolean shallBeDir, final boolean shallBeWritable) { if (!file.exists()) { if(DEBUG) { System.err.println("IOUtil.testFile: <"+file.getAbsolutePath()+">: does not exist"); } return false; } if (shallBeDir && !file.isDirectory()) { if(DEBUG) { System.err.println("IOUtil.testFile: <"+file.getAbsolutePath()+">: is not a directory"); } return false; } if (shallBeWritable && !file.canWrite()) { if(DEBUG) { System.err.println("IOUtil.testFile: <"+file.getAbsolutePath()+">: is not writable"); } return false; } return true; } public static class StreamMonitor implements Runnable { private final InputStream[] istreams; private final PrintStream ostream; private final String prefix; public StreamMonitor(final InputStream[] streams, final PrintStream ostream, final String prefix) { this.istreams = streams; this.ostream = ostream; this.prefix = prefix; new Thread(this, "StreamMonitor-"+Thread.currentThread().getName()).start(); } @Override public void run() { final byte[] buffer = new byte[4096]; try { int numRead; do { numRead = 0; for(int i=0; i 0) { if( null != ostream ) { if( null != prefix ) { ostream.write(prefix.getBytes()); } ostream.write(buffer, 0, numReadI); } numRead += numReadI; } } if( null != ostream ) { ostream.flush(); } } while (numRead >= 0); } catch (final IOException e) { for(int i=0; i *
  • exists, and
    • *
  • is a directory, and
    • *
  • is writeable, and
    • *
  • files can be executed from the directory
    • * * * @throws SecurityException if file creation and process execution is not allowed within the current security context * @param dir */ public static boolean testDirExec(final File dir) throws SecurityException { if (!testFile(dir, true, true)) { if(DEBUG) { System.err.println("IOUtil.testDirExec: <"+dir.getAbsolutePath()+">: Not writeable dir"); } return false; } if(!getOSHasNoexecFS()) { if(DEBUG) { System.err.println("IOUtil.testDirExec: <"+dir.getAbsolutePath()+">: Always executable"); } return true; } final long t0 = DEBUG ? System.currentTimeMillis() : 0; File exetst; try { exetst = File.createTempFile("jogamp_exe_tst", getShellSuffix(), dir); } catch (final SecurityException se) { throw se; // fwd Security exception } catch (final IOException e) { if(DEBUG) { e.printStackTrace(); } return false; } final long t1 = DEBUG ? System.currentTimeMillis() : 0; int res = -1; if(exetst.setExecutable(true /* exec */, true /* ownerOnly */)) { final String shellCode = getShellCode(); try { if( isStringSet(shellCode) ) { final FileWriter fout = new FileWriter(exetst); fout.write(shellCode); fout.close(); } final Process pr = Runtime.getRuntime().exec(exetst.getCanonicalPath()); /** * Disable StreamMonitor, which throttles exec-test performance a lot! * * if( isStringSet(shellCode) ) { new StreamMonitor(new InputStream[] { pr.getInputStream(), pr.getErrorStream() }, System.err, "Exe-Tst: "); } */ pr.waitFor() ; res = pr.exitValue(); } catch (final SecurityException se) { throw se; // fwd Security exception } catch (final Throwable t) { res = -2; if(DEBUG) { System.err.println("IOUtil.testDirExec: <"+exetst.getAbsolutePath()+">: Caught "+t.getClass().getSimpleName()+": "+t.getMessage()); // t.printStackTrace(); } } } final long t2 = DEBUG ? System.currentTimeMillis() : 0; exetst.delete(); if( DEBUG) { System.err.println("IOUtil.testDirExec(): <"+dir.getAbsolutePath()+">: res "+res); System.err.println("IOUtil.testDirExec(): total "+(t2-t0)+"ms, create "+(t1-t0)+"ms, execute "+(t2-t1)+"ms"); } return 0 == res; } private static File testDirImpl(final File dir, final boolean create, final boolean executable, final String dbgMsg) throws SecurityException { final File res; if (create && !dir.exists()) { dir.mkdirs(); } if( executable ) { res = testDirExec(dir) ? dir : null; } else { res = testFile(dir, true, true) ? dir : null; } if(DEBUG) { System.err.println("IOUtil.testDirImpl("+dbgMsg+"): <"+dir.getAbsolutePath()+">, create "+create+", exec "+executable+": "+(null != res)); } return res; } /** * Returns the directory {@code dir}, which is processed and tested as described below. *
      *
    1. If {@code create} is {@code true} and the directory does not exist yet, it is created incl. all sub-directories.
      2. *
    2. If {@code dirName} exists, but is not a directory, {@code null} is being returned.
      3. *
    3. If the directory does not exist or is not writeable, {@code null} is being returned.
      4. *
    4. If {@code executable} is {@code true} and files cannot be executed from the directory, {@code null} is being returned.
      5. *
    * * @param dir the directory to process * @param create true if the directory shall be created if not existing * @param executable true if the user intents to launch executables from the temporary directory, otherwise false. * @throws SecurityException if file creation and process execution is not allowed within the current security context */ public static File testDir(final File dir, final boolean create, final boolean executable) throws SecurityException { return testDirImpl(dir, create, executable, "testDir"); } private static boolean isStringSet(final String s) { return null != s && 0 < s.length(); } /** * This methods finds [and creates] an available temporary sub-directory: * 
               File tmpBaseDir = null;
           if(null != testDir(tmpRoot, true, executable)) { // check tmpRoot first
               for(int i = 0; null == tmpBaseDir && i<=9999; i++) {
                   final String tmpDirSuffix = String.format("_%04d", i); // 4 digits for iteration
                   tmpBaseDir = testDir(new File(tmpRoot, tmpSubDirPrefix+tmpDirSuffix), true, executable);
               }
           } else {
               tmpBaseDir = null;
           }
           return tmpBaseDir;
     *
    *

    * The iteration through [0000-9999] ensures that the code is multi-user save. *

    * @param tmpRoot * @param executable * @param dbgMsg * @param tmpDirPrefix * @return a temporary directory, writable by this user * @throws SecurityException */ private static File getSubTempDir(final File tmpRoot, final String tmpSubDirPrefix, final boolean executable, final String dbgMsg) throws SecurityException { File tmpBaseDir = null; if(null != testDirImpl(tmpRoot, true /* create */, executable, dbgMsg)) { // check tmpRoot first for(int i = 0; null == tmpBaseDir && i<=9999; i++) { final String tmpDirSuffix = String.format("_%04d", i); // 4 digits for iteration tmpBaseDir = testDirImpl(new File(tmpRoot, tmpSubDirPrefix+tmpDirSuffix), true /* create */, executable, dbgMsg); } } return tmpBaseDir; } private static File getFile(final String fname) { if( isStringSet(fname) ) { return new File(fname); } else { return null; } } /** * Returns a platform independent writable directory for temporary files * consisting of the platform's {@code temp-root} + {@link #tmpSubDir}, * e.g. {@code /tmp/jogamp_0000/}. *

    * On standard Java the {@code temp-root} folder is specified by java.io.tempdir. *

    *

    * On Android the {@code temp-root} folder is relative to the applications local folder * (see {@link Context#getDir(String, int)}) is returned, if * the Android application/activity has registered it's Application Context * via {@link jogamp.common.os.android.StaticContext.StaticContext#init(Context, ClassLoader) StaticContext.init(..)}. * This allows using the temp folder w/o the need for sdcard * access, which would be the java.io.tempdir location on Android! *

    *

    * In case {@code temp-root} is the users home folder, * a dot is being prepended to {@link #tmpSubDir}, i.e.: {@code /home/user/.jogamp_0000/}. *

    * @param executable true if the user intents to launch executables from the temporary directory, otherwise false. * @throws RuntimeException if no temporary directory could be determined * @throws SecurityException if access to java.io.tmpdir is not allowed within the current security context * * @see PropertyAccess#getProperty(String, boolean) * @see Context#getDir(String, int) */ public static File getTempDir(final boolean executable) throws SecurityException, RuntimeException { if(!tempRootSet) { // volatile: ok synchronized(IOUtil.class) { if(!tempRootSet) { tempRootSet = true; { final File ctxTempDir = AndroidUtils.getTempRoot(); // null if ( !Android || no android-ctx ) if(null != ctxTempDir) { tempRootNoexec = getSubTempDir(ctxTempDir, tmpSubDir, false /* executable, see below */, "Android.ctxTemp"); tempRootExec = tempRootNoexec; // FIXME: Android temp root is always executable (?) return tempRootExec; } } final File java_io_tmpdir = getFile( PropertyAccess.getProperty(java_io_tmpdir_propkey, false) ); if(DEBUG) { System.err.println("IOUtil.getTempRoot(): tempX1 <"+java_io_tmpdir+">, used "+(null!=java_io_tmpdir)); } final File user_tmpdir; // only if diff than java_io_tmpdir { String __user_tmpdir = System.getenv("TMPDIR"); if( !isStringSet(__user_tmpdir) ) { __user_tmpdir = System.getenv("TEMP"); } final File _user_tmpdir = getFile(__user_tmpdir); if( null != _user_tmpdir && !_user_tmpdir.equals(java_io_tmpdir) ) { user_tmpdir = _user_tmpdir; } else { user_tmpdir = null; } if(DEBUG) { System.err.println("IOUtil.getTempRoot(): tempX3 <"+_user_tmpdir+">, used "+(null!=user_tmpdir)); } } final File user_home = getFile( PropertyAccess.getProperty(user_home_propkey, false) ); if(DEBUG) { System.err.println("IOUtil.getTempRoot(): tempX4 <"+user_home+">, used "+(null!=user_home)); } final File xdg_cache_home; { String __xdg_cache_home; if( getOSHasFreeDesktopXDG() ) { __xdg_cache_home = System.getenv(XDG_CACHE_HOME_envkey); if( !isStringSet(__xdg_cache_home) && null != user_home ) { __xdg_cache_home = user_home.getAbsolutePath() + File.separator + ".cache" ; // default } } else { __xdg_cache_home = null; } final File _xdg_cache_home = getFile(__xdg_cache_home); if( null != _xdg_cache_home && !_xdg_cache_home.equals(java_io_tmpdir) ) { xdg_cache_home = _xdg_cache_home; } else { xdg_cache_home = null; } if(DEBUG) { System.err.println("IOUtil.getTempRoot(): tempX2 <"+_xdg_cache_home+">, used "+(null!=xdg_cache_home)); } } // 1) java.io.tmpdir/jogamp if( null == tempRootExec && null != java_io_tmpdir ) { if( Platform.OSType.MACOS == PlatformPropsImpl.OS_TYPE ) { // Bug 865: Safari >= 6.1 [OSX] May employ xattr on 'com.apple.quarantine' on 'PluginProcess.app' // We attempt to fix this issue _after_ gluegen native lib is loaded, see JarUtil.fixNativeLibAttribs(File). tempRootExec = getSubTempDir(java_io_tmpdir, tmpSubDir, false /* executable */, "tempX1"); } else { tempRootExec = getSubTempDir(java_io_tmpdir, tmpSubDir, true /* executable */, "tempX1"); } } // 2) $XDG_CACHE_HOME/jogamp if( null == tempRootExec && null != xdg_cache_home ) { tempRootExec = getSubTempDir(xdg_cache_home, tmpSubDir, true /* executable */, "tempX2"); } // 3) $TMPDIR/jogamp if( null == tempRootExec && null != user_tmpdir ) { tempRootExec = getSubTempDir(user_tmpdir, tmpSubDir, true /* executable */, "tempX3"); } // 4) $HOME/.jogamp if( null == tempRootExec && null != user_home ) { tempRootExec = getSubTempDir(user_home, "." + tmpSubDir, true /* executable */, "tempX4"); } if( null != tempRootExec ) { tempRootNoexec = tempRootExec; } else { // 1) java.io.tmpdir/jogamp if( null == tempRootNoexec && null != java_io_tmpdir ) { tempRootNoexec = getSubTempDir(java_io_tmpdir, tmpSubDir, false /* executable */, "temp01"); } // 2) $XDG_CACHE_HOME/jogamp if( null == tempRootNoexec && null != xdg_cache_home ) { tempRootNoexec = getSubTempDir(xdg_cache_home, tmpSubDir, false /* executable */, "temp02"); } // 3) $TMPDIR/jogamp if( null == tempRootNoexec && null != user_tmpdir ) { tempRootNoexec = getSubTempDir(user_tmpdir, tmpSubDir, false /* executable */, "temp03"); } // 4) $HOME/.jogamp if( null == tempRootNoexec && null != user_home ) { tempRootNoexec = getSubTempDir(user_home, "." + tmpSubDir, false /* executable */, "temp04"); } } if(DEBUG) { final String tempRootExecAbsPath = null != tempRootExec ? tempRootExec.getAbsolutePath() : null; final String tempRootNoexecAbsPath = null != tempRootNoexec ? tempRootNoexec.getAbsolutePath() : null; System.err.println("IOUtil.getTempRoot(): temp dirs: exec: "+tempRootExecAbsPath+", noexec: "+tempRootNoexecAbsPath); } } } } final File r = executable ? tempRootExec : tempRootNoexec ; if(null == r) { throw new RuntimeException("Could not determine a temporary directory"); } final FilePermission fp = new FilePermission(r.getAbsolutePath(), "read,write,delete"); SecurityUtil.checkPermission(fp); return r; } private static File tempRootExec = null; // writeable and executable private static File tempRootNoexec = null; // writeable, maybe executable private static volatile boolean tempRootSet = false; /** * Utilizing {@link File#createTempFile(String, String, File)} using * {@link #getTempDir(boolean)} as the directory parameter, ie. location * of the root temp folder. * * @see File#createTempFile(String, String) * @see File#createTempFile(String, String, File) * @see #getTempDir(boolean) * * @param prefix * @param suffix * @param executable true if the temporary root folder needs to hold executable files, otherwise false. * @return * @throws IllegalArgumentException * @throws IOException * @throws SecurityException */ public static File createTempFile(final String prefix, final String suffix, final boolean executable) throws IllegalArgumentException, IOException, SecurityException { return File.createTempFile( prefix, suffix, getTempDir(executable) ); } public static void close(final Closeable stream, final boolean throwRuntimeException) throws RuntimeException { if(null != stream) { try { stream.close(); } catch (final IOException e) { if(throwRuntimeException) { throw new RuntimeException(e); } else if(DEBUG) { System.err.println("Caught Exception: "); e.printStackTrace(); } } } } }