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8235361: JAR Class-Path no longer accepts relative URLs encoding absolute Windows paths (e.g "/C:/...")

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Reviewed-by: alanb, mchung
This commit is contained in:
Brent Christian 2019-12-10 11:56:26 -08:00
parent eec0e71c04
commit 4627488e74
2 changed files with 24 additions and 19 deletions
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24
src/java.base/share/classes/jdk/internal/loader/URLClassPath.java
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@ -1125,27 +1125,21 @@ public class URLClassPath {
/**
* Attempt to return a file URL by resolving input against a base file
* URL. The input is an absolute or relative file URL that encodes a
* file path.
*
* @apiNote Nonsensical input such as a Windows file path with a drive
* letter cannot be disambiguated from an absolute URL so will be rejected
* (by returning null) by this method.
*
* URL.
* @return the resolved URL or null if the input is an absolute URL with
* a scheme other than file (ignoring case)
* @throws MalformedURLException
*/
static URL tryResolveFile(URL base, String input) throws MalformedURLException {
int index = input.indexOf(':');
boolean isFile;
if (index >= 0) {
String scheme = input.substring(0, index);
isFile = "file".equalsIgnoreCase(scheme);
} else {
isFile = true;
URL retVal = new URL(base, input);
if (input.indexOf(':') >= 0 &&
!"file".equalsIgnoreCase(retVal.getProtocol())) {
// 'input' contains a ':', which might be a scheme, or might be
// a Windows drive letter. If the protocol for the resolved URL
// isn't "file:", it should be ignored.
return null;
}
return (isFile) ? new URL(base, input) : null;
return retVal;
}
/**

19
test/jdk/jdk/internal/loader/URLClassPath/JarClassPathFileEntry.java
View File

@ -33,8 +33,8 @@ import jdk.test.lib.compiler.InMemoryJavaCompiler;
/*
* @test
* @bug 8216401
* @summary Test loading of JAR Class-Path entry with file: scheme
* @bug 8216401 8235361
* @summary Test classloading via JAR Class-Path entries
* @library /test/lib
*
* @run main/othervm JarClassPathFileEntry
@ -52,6 +52,19 @@ public class JarClassPathFileEntry {
private final static Path CONTEXT_JAR_PATH = Paths.get(TEST_CLASSES, "Context.jar");
public static void main(String[] args) throws Throwable {
String fileScheme = "file:" + (IS_WINDOWS ? toUnixPath(OTHER_JAR_PATH.toString())
: OTHER_JAR_PATH.toString());
doTest(fileScheme);
if (IS_WINDOWS) {
// Relative URL encoding of absolute path, e.g. /C:\\path\\to\\file.jar
String driveLetter = "/" + OTHER_JAR_PATH;
doTest(driveLetter);
}
}
/* Load a class from Other.jar via the given Class-Path entry */
private static void doTest(String classPathEntry) throws Throwable {
// Create Other.class in OTHER_DIR, off the default classpath
byte klassbuf[] = InMemoryJavaCompiler.compile("Other",
"public class Other {}");
@ -72,8 +85,6 @@ public class JarClassPathFileEntry {
Attributes attrs = mf.getMainAttributes();
attrs.put(Attributes.Name.MANIFEST_VERSION, "1.0");
String classPathEntry = "file:" + (IS_WINDOWS ? toUnixPath(OTHER_JAR_PATH.toString())
: OTHER_JAR_PATH.toString());
attrs.put(Attributes.Name.CLASS_PATH, classPathEntry);
System.out.println("Creating Context.jar with Class-Path: " + classPathEntry);