CachePermissionsTest.java revision 3261
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0N/A
0N/A/**
0N/A * @test
0N/A * @bug 6684104
0N/A * @summary Test verifies that ImageIO checks all permissions required for
0N/A * the file cache usage:
0N/A *
0N/A * no policy file: No security restrictions.
0N/A * Expected result: ImageIO creates file-cached stream.
0N/A *
0N/A * w.policy: the case when we have read and write permissions
0N/A * for java.io.temp directory but have only write permission
0N/A * for a temp file.
0N/A * Expected result: ImageIO create a memory-cached stream
0N/A * image output stream.
0N/A *
0N/A * rw.policy: the case when we have read and write permissions
0N/A * for java.io.temp directory but have only read and write
0N/A * permission for a temp cache file.
0N/A * Expected result: ImageIO creates a memory-cached stream
0N/A * because temporary cache file can not be deleted.
0N/A *
0N/A * rwd.policy: the case when we have read and write permissions
0N/A * for java.io.temp directory and have all required permissions
0N/A * (read, write, and delete) for a temporary cache file.
0N/A * Expected result: ImageIO creates file-cached stream.
0N/A *
0N/A * -Djava.security.debug=access can be used to verify file permissions.
0N/A *
0N/A * @run main CachePermissionsTest true
0N/A * @run main/othervm CachePermissionsTest false w.policy
0N/A * @run main/othervm CachePermissionsTest false rw.policy
0N/A * @run main/othervm CachePermissionsTest true rwd.policy
0N/A */
0N/A
0N/Aimport java.io.File;
0N/Aimport java.io.IOException;
0N/Aimport java.io.ByteArrayOutputStream;
0N/Aimport javax.imageio.stream.ImageOutputStream;
0N/A
0N/Aimport javax.imageio.ImageIO;
public class CachePermissionsTest {
public static void main(String[] args) {
boolean isFileCacheExpected =
Boolean.valueOf(args[0]).booleanValue();
System.out.println("Is file cache expected: " + isFileCacheExpected);
ImageIO.setUseCache(true);
System.out.println("java.io.tmpdir is " + System.getProperty("java.io.tmpdir"));
if (args.length > 1) {
String testsrc = System.getProperty("test.src", ".");
String policy = testsrc + File.separator + args[1];
System.out.println("Policy file: " + policy);
System.setProperty("java.security.policy", policy);
System.out.println("Install security manager...");
System.setSecurityManager(new SecurityManager());
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
boolean isFileCache = ios.isCachedFile();
System.out.println("Is file cache used: " + isFileCache);
if (isFileCache !=isFileCacheExpected) {
System.out.println("WARNING: file chace usage is not as expected!");
}
System.out.println("Verify data writing...");
for (int i = 0; i < 8192; i++) {
ios.writeInt(i);
}
System.out.println("Verify data reading...");
ios.seek(0L);
for (int i = 0; i < 8192; i++) {
int j = ios.readInt();
if (i != j) {
throw new RuntimeException("Wrong data in the stream " + j + " instead of " + i);
}
}
System.out.println("Verify stream closing...");
ios.close();
} catch (IOException e) {
/*
* Something went wrong?
*/
throw new RuntimeException("Test FAILED.", e);
} catch (SecurityException e) {
/*
* We do not expect security execptions here:
* we there are any security restrition, ImageIO
* should swith to memory-cached streams, instead
* of using file cache.
*/
throw new RuntimeException("Test FAILED.", e);
}
}
}