src/share/classes/java/util/jar/JarFile.java
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*** 61,72 ****
private SoftReference<Manifest> manRef;
private JarEntry manEntry;
private JarVerifier jv;
private boolean jvInitialized;
private boolean verify;
! private boolean computedHasClassPathAttribute;
private boolean hasClassPathAttribute;
// Set up JavaUtilJarAccess in SharedSecrets
static {
SharedSecrets.setJavaUtilJarAccess(new JavaUtilJarAccessImpl());
}
--- 61,77 ----
private SoftReference<Manifest> manRef;
private JarEntry manEntry;
private JarVerifier jv;
private boolean jvInitialized;
private boolean verify;
!
! // indicates if Class-Path attribute present (only valid if hasCheckedSpecialAttributes true)
private boolean hasClassPathAttribute;
+ // indicates if Profile attribute present (only valid if hasCheckedSpecialAttributes true)
+ private boolean hasProfileAttribute;
+ // true if manifest checked for special attributes
+ private volatile boolean hasCheckedSpecialAttributes;
// Set up JavaUtilJarAccess in SharedSecrets
static {
SharedSecrets.setJavaUtilJarAccess(new JavaUtilJarAccessImpl());
}
*** 419,449 ****
(JarEntry) ze : getJarEntry(ze.getName()),
super.getInputStream(ze),
jv);
}
! // Statics for hand-coded Boyer-Moore search in hasClassPathAttribute()
// The bad character shift for "class-path"
! private static int[] lastOcc;
// The good suffix shift for "class-path"
! private static int[] optoSft;
! // Initialize the shift arrays to search for "class-path"
! private static char[] src = {'c','l','a','s','s','-','p','a','t','h'};
static {
! lastOcc = new int[128];
! optoSft = new int[10];
! lastOcc[(int)'c']=1;
! lastOcc[(int)'l']=2;
! lastOcc[(int)'s']=5;
! lastOcc[(int)'-']=6;
! lastOcc[(int)'p']=7;
! lastOcc[(int)'a']=8;
! lastOcc[(int)'t']=9;
! lastOcc[(int)'h']=10;
for (int i=0; i<9; i++)
! optoSft[i]=10;
! optoSft[9]=1;
}
private JarEntry getManEntry() {
if (manEntry == null) {
// First look up manifest entry using standard name
--- 424,472 ----
(JarEntry) ze : getJarEntry(ze.getName()),
super.getInputStream(ze),
jv);
}
! // Statics for hand-coded Boyer-Moore search
! private static final char[] CLASSPATH_CHARS = {'c','l','a','s','s','-','p','a','t','h'};
! private static final char[] PROFILE_CHARS = { 'p', 'r', 'o', 'f', 'i', 'l', 'e' };
// The bad character shift for "class-path"
! private static final int[] CLASSPATH_LASTOCC;
// The good suffix shift for "class-path"
! private static final int[] CLASSPATH_OPTOSFT;
! // The bad character shift for "profile"
! private static final int[] PROFILE_LASTOCC;
! // The good suffix shift for "profile"
! private static final int[] PROFILE_OPTOSFT;
!
static {
! CLASSPATH_LASTOCC = new int[128];
! CLASSPATH_OPTOSFT = new int[10];
! CLASSPATH_LASTOCC[(int)'c'] = 1;
! CLASSPATH_LASTOCC[(int)'l'] = 2;
! CLASSPATH_LASTOCC[(int)'s'] = 5;
! CLASSPATH_LASTOCC[(int)'-'] = 6;
! CLASSPATH_LASTOCC[(int)'p'] = 7;
! CLASSPATH_LASTOCC[(int)'a'] = 8;
! CLASSPATH_LASTOCC[(int)'t'] = 9;
! CLASSPATH_LASTOCC[(int)'h'] = 10;
for (int i=0; i<9; i++)
! CLASSPATH_OPTOSFT[i] = 10;
! CLASSPATH_OPTOSFT[9]=1;
!
! PROFILE_LASTOCC = new int[128];
! PROFILE_OPTOSFT = new int[7];
! PROFILE_LASTOCC[(int)'p'] = 1;
! PROFILE_LASTOCC[(int)'r'] = 2;
! PROFILE_LASTOCC[(int)'o'] = 3;
! PROFILE_LASTOCC[(int)'f'] = 4;
! PROFILE_LASTOCC[(int)'i'] = 5;
! PROFILE_LASTOCC[(int)'l'] = 6;
! PROFILE_LASTOCC[(int)'e'] = 7;
! for (int i=0; i<6; i++)
! PROFILE_OPTOSFT[i] = 7;
! PROFILE_OPTOSFT[6] = 1;
}
private JarEntry getManEntry() {
if (manEntry == null) {
// First look up manifest entry using standard name
*** 464,538 ****
}
}
return manEntry;
}
! // Returns true iff this jar file has a manifest with a class path
! // attribute. Returns false if there is no manifest or the manifest
! // does not contain a "Class-Path" attribute. Currently exported to
! // core libraries via sun.misc.SharedSecrets.
boolean hasClassPathAttribute() throws IOException {
! if (computedHasClassPathAttribute) {
return hasClassPathAttribute;
}
! hasClassPathAttribute = false;
! if (!isKnownToNotHaveClassPathAttribute()) {
! JarEntry manEntry = getManEntry();
! if (manEntry != null) {
! byte[] b = new byte[(int)manEntry.getSize()];
! try (DataInputStream dis = new DataInputStream(
! super.getInputStream(manEntry))) {
! dis.readFully(b, 0, b.length);
}
! int last = b.length - src.length;
int i = 0;
next:
while (i<=last) {
! for (int j=9; j>=0; j--) {
char c = (char) b[i+j];
c = (((c-'A')|('Z'-c)) >= 0) ? (char)(c + 32) : c;
if (c != src[j]) {
i += Math.max(j + 1 - lastOcc[c&0x7F], optoSft[j]);
continue next;
}
}
! hasClassPathAttribute = true;
! break;
}
}
}
! computedHasClassPathAttribute = true;
! return hasClassPathAttribute;
}
private static String javaHome;
! private static String[] jarNames;
! private boolean isKnownToNotHaveClassPathAttribute() {
// Optimize away even scanning of manifest for jar files we
// deliver which don't have a class-path attribute. If one of
// these jars is changed to include such an attribute this code
// must be changed.
if (javaHome == null) {
javaHome = AccessController.doPrivileged(
new GetPropertyAction("java.home"));
}
if (jarNames == null) {
! String[] names = new String[10];
String fileSep = File.separator;
int i = 0;
names[i++] = fileSep + "rt.jar";
- names[i++] = fileSep + "sunrsasign.jar";
names[i++] = fileSep + "jsse.jar";
names[i++] = fileSep + "jce.jar";
names[i++] = fileSep + "charsets.jar";
names[i++] = fileSep + "dnsns.jar";
! names[i++] = fileSep + "ldapsec.jar";
names[i++] = fileSep + "localedata.jar";
names[i++] = fileSep + "sunjce_provider.jar";
names[i++] = fileSep + "sunpkcs11.jar";
jarNames = names;
}
String name = getName();
String localJavaHome = javaHome;
--- 487,587 ----
}
}
return manEntry;
}
! /**
! * Returns {@code true} iff this JAR file has a manifest with the
! * Class-Path attribute
! */
boolean hasClassPathAttribute() throws IOException {
! checkForSpecialAttributes();
return hasClassPathAttribute;
}
! /**
! * Returns {@code true} iff this JAR file has a manifest with the
! * Profile attribute
! */
! boolean hasProfileAttribute() throws IOException {
! checkForSpecialAttributes();
! return hasProfileAttribute;
}
! /**
! * Returns true if the pattern {@code src} is found in {@code b}.
! * The {@code lastOcc} and {@code optoSft} arrays are the precomputed
! * bad character and good suffix shifts.
! */
! private boolean match(char[] src, byte[] b, int[] lastOcc, int[] optoSft) {
! int len = src.length;
! int last = b.length - len;
int i = 0;
next:
while (i<=last) {
! for (int j=(len-1); j>=0; j--) {
char c = (char) b[i+j];
c = (((c-'A')|('Z'-c)) >= 0) ? (char)(c + 32) : c;
if (c != src[j]) {
i += Math.max(j + 1 - lastOcc[c&0x7F], optoSft[j]);
continue next;
}
}
! return true;
}
+ return false;
}
+
+ /**
+ * On first invocation, check if the JAR file has the Class-Path
+ * and/or Profile attributes. A no-op on subsequent calls.
+ */
+ private void checkForSpecialAttributes() throws IOException {
+ if (hasCheckedSpecialAttributes) return;
+ if (!isKnownNotToHaveSpecialAttributes()) {
+ JarEntry manEntry = getManEntry();
+ if (manEntry != null) {
+ byte[] b = new byte[(int)manEntry.getSize()];
+ try (DataInputStream dis = new DataInputStream(
+ super.getInputStream(manEntry))) {
+ dis.readFully(b, 0, b.length);
}
! if (match(CLASSPATH_CHARS, b, CLASSPATH_LASTOCC, CLASSPATH_OPTOSFT))
! hasClassPathAttribute = true;
! if (match(PROFILE_CHARS, b, PROFILE_LASTOCC, PROFILE_OPTOSFT))
! hasProfileAttribute = true;
! }
! }
! hasCheckedSpecialAttributes = true;
}
private static String javaHome;
! private static volatile String[] jarNames;
! private boolean isKnownNotToHaveSpecialAttributes() {
// Optimize away even scanning of manifest for jar files we
// deliver which don't have a class-path attribute. If one of
// these jars is changed to include such an attribute this code
// must be changed.
if (javaHome == null) {
javaHome = AccessController.doPrivileged(
new GetPropertyAction("java.home"));
}
if (jarNames == null) {
! String[] names = new String[11];
String fileSep = File.separator;
int i = 0;
names[i++] = fileSep + "rt.jar";
names[i++] = fileSep + "jsse.jar";
names[i++] = fileSep + "jce.jar";
names[i++] = fileSep + "charsets.jar";
names[i++] = fileSep + "dnsns.jar";
! names[i++] = fileSep + "zipfs.jar";
names[i++] = fileSep + "localedata.jar";
+ names[i++] = fileSep = "cldrdata.jar";
names[i++] = fileSep + "sunjce_provider.jar";
names[i++] = fileSep + "sunpkcs11.jar";
+ names[i++] = fileSep + "sunec.jar";
jarNames = names;
}
String name = getName();
String localJavaHome = javaHome;