/*
* Copyright (c) OSGi Alliance (2005, 2013). All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.osgi.framework;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Dictionary;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.security.auth.x500.X500Principal;
/**
* Framework Utility class.
*
* <p>
* This class contains utility methods which access Framework functions that may
* be useful to bundles.
*
* @since 1.3
* @ThreadSafe
* @author $Id: e93d15cef98c0e7f425f3b076d317c46ebb9a52a $
*/
public class FrameworkUtil {
/**
* FrameworkUtil objects may not be constructed.
*/
private FrameworkUtil() {
// private empty constructor to prevent construction
}
/**
* Creates a {@code Filter} object. This {@code Filter} object may be used
* to match a {@code ServiceReference} object or a {@code Dictionary}
* object.
*
* <p>
* If the filter cannot be parsed, an {@link InvalidSyntaxException} will be
* thrown with a human readable message where the filter became unparsable.
*
* <p>
* This method returns a Filter implementation which may not perform as well
* as the framework implementation-specific Filter implementation returned
* by {@link BundleContext#createFilter(String)}.
*
* @param filter The filter string.
* @return A {@code Filter} object encapsulating the filter string.
* @throws InvalidSyntaxException If {@code filter} contains an invalid
* filter string that cannot be parsed.
* @throws NullPointerException If {@code filter} is null.
*
* @see Filter
*/
public static Filter createFilter(String filter) throws InvalidSyntaxException {
return FilterImpl.newInstance(filter);
}
/**
* Match a Distinguished Name (DN) chain against a pattern. DNs can be
* matched using wildcards. A wildcard ({@code '*'} \u002A) replaces all
* possible values. Due to the structure of the DN, the comparison is more
* complicated than string-based wildcard matching.
* <p>
* A wildcard can stand for zero or more DNs in a chain, a number of
* relative distinguished names (RDNs) within a DN, or the value of a single
* RDN. The DNs in the chain and the matching pattern are canonicalized
* before processing. This means, among other things, that spaces must be
* ignored, except in values.
* <p>
* The format of a wildcard match pattern is:
*
* <pre>
* matchPattern ::= dn-match ( ';' dn-match ) *
* dn-match ::= ( '*' | rdn-match ) ( ',' rdn-match ) * | '-'
* rdn-match ::= name '=' value-match
* value-match ::= '*' | value-star
* value-star ::= < value, requires escaped '*' and '-' >
* </pre>
* <p>
* The most simple case is a single wildcard; it must match any DN. A
* wildcard can also replace the first list of RDNs of a DN. The first RDNs
* are the least significant. Such lists of matched RDNs can be empty.
* <p>
* For example, a match pattern with a wildcard that matches all DNs that
* end with RDNs of o=ACME and c=US would look like this:
*
* <pre>
* *, o=ACME, c=US
* </pre>
*
* This match pattern would match the following DNs:
*
* <pre>
* cn = Bugs Bunny, o = ACME, c = US
* ou = Carrots, cn=Daffy Duck, o=ACME, c=US
* street = 9C\, Avenue St. Drézéry, o=ACME, c=US
* dc=www, dc=acme, dc=com, o=ACME, c=US
* o=ACME, c=US
* </pre>
*
* The following DNs would not match:
*
* <pre>
* street = 9C\, Avenue St. Drézéry, o=ACME, c=FR
* dc=www, dc=acme, dc=com, c=US
* </pre>
*
* If a wildcard is used for a value of an RDN, the value must be exactly *.
* The wildcard must match any value, and no substring matching must be
* done. For example:
*
* <pre>
* cn=*,o=ACME,c=*
* </pre>
*
* This match pattern with wildcard must match the following DNs:
*
* <pre>
* cn=Bugs Bunny,o=ACME,c=US
* cn = Daffy Duck , o = ACME , c = US
* cn=Road Runner, o=ACME, c=NL
* </pre>
*
* But not:
*
* <pre>
* o=ACME, c=NL
* dc=acme.com, cn=Bugs Bunny, o=ACME, c=US
* </pre>
*
* <p>
* A match pattern may contain a chain of DN match patterns. The semicolon(
* {@code ';'} \u003B) must be used to separate DN match patterns in a
* chain. Wildcards can also be used to match against a complete DN within a
* chain.
* <p>
* The following example matches a certificate signed by Tweety Inc. in the
* US.
* </p>
*
* <pre>
* * ; ou=S & V, o=Tweety Inc., c=US
* </pre>
* <p>
* The wildcard ('*') matches zero or one DN in the chain, however,
* sometimes it is necessary to match a longer chain. The minus sign (
* {@code '-'} \u002D) represents zero or more DNs, whereas the asterisk
* only represents a single DN. For example, to match a DN where the Tweety
* Inc. is in the DN chain, use the following expression:
* </p>
*
* <pre>
* - ; *, o=Tweety Inc., c=US
* </pre>
*
* @param matchPattern The pattern against which to match the DN chain.
* @param dnChain The DN chain to match against the specified pattern. Each
* element of the chain must be of type {@code String} and use the
* format defined in <a
* href="http://www.ietf.org/rfc/rfc2253.txt">RFC 2253</a>.
* @return {@code true} If the pattern matches the DN chain; otherwise
* {@code false} is returned.
* @throws IllegalArgumentException If the specified match pattern or DN
* chain is invalid.
* @since 1.5
*/
public static boolean matchDistinguishedNameChain(String matchPattern, List<String> dnChain) {
return DNChainMatching.match(matchPattern, dnChain);
}
/**
* Return a {@code Bundle} for the specified bundle class. The returned
* {@code Bundle} is the bundle associated with the bundle class loader
* which defined the specified class.
*
* @param classFromBundle A class defined by a bundle class loader.
* @return A {@code Bundle} for the specified bundle class or {@code null}
* if the specified class was not defined by a bundle class loader.
* @since 1.5
*/
public static Bundle getBundle(final Class<?> classFromBundle) {
// We use doPriv since the caller may not have permission
// to call getClassLoader.
Object cl = AccessController.doPrivileged(new PrivilegedAction<Object>() {
public Object run() {
return classFromBundle.getClassLoader();
}
});
if (cl instanceof BundleReference) {
return ((BundleReference) cl).getBundle();
}
return null;
}
/**
* RFC 1960-based Filter. Filter objects can be created by calling the
* constructor with the desired filter string. A Filter object can be called
* numerous times to determine if the match argument matches the filter
* string that was used to create the Filter object.
*
* <p>
* The syntax of a filter string is the string representation of LDAP search
* filters as defined in RFC 1960: <i>A String Representation of LDAP Search
* Filters</i> (available at http://www.ietf.org/rfc/rfc1960.txt). It should
* be noted that RFC 2254: <i>A String Representation of LDAP Search
* Filters</i> (available at http://www.ietf.org/rfc/rfc2254.txt) supersedes
* RFC 1960 but only adds extensible matching and is not applicable for this
* API.
*
* <p>
* The string representation of an LDAP search filter is defined by the
* following grammar. It uses a prefix format.
*
* <pre>
* <filter> ::= '(' <filtercomp> ')'
* <filtercomp> ::= <and> | <or> | <not> | <item>
* <and> ::= '&' <filterlist>
* <or> ::= '|' <filterlist>
* <not> ::= '!' <filter>
* <filterlist> ::= <filter> | <filter> <filterlist>
* <item> ::= <simple> | <present> | <substring>
* <simple> ::= <attr> <filtertype> <value>
* <filtertype> ::= <equal> | <approx> | <greater> | <less>
* <equal> ::= '='
* <approx> ::= '˜='
* <greater> ::= '>='
* <less> ::= '<='
* <present> ::= <attr> '=*'
* <substring> ::= <attr> '=' <initial> <any> <final>
* <initial> ::= NULL | <value>
* <any> ::= '*' <starval>
* <starval> ::= NULL | <value> '*' <starval>
* <final> ::= NULL | <value>
* </pre>
*
* {@code <attr>} is a string representing an attribute, or key, in
* the properties objects of the registered services. Attribute names are
* not case sensitive; that is cn and CN both refer to the same attribute.
* {@code <value>} is a string representing the value, or part of one,
* of a key in the properties objects of the registered services. If a
* {@code <value>} must contain one of the characters ' {@code *}' or
* '{@code (}' or '{@code )}', these characters should be escaped by
* preceding them with the backslash '{@code \}' character. Note that
* although both the {@code <substring>} and {@code <present>}
* productions can produce the {@code 'attr=*'} construct, this construct is
* used only to denote a presence filter.
*
* <p>
* Examples of LDAP filters are:
*
* <pre>
* "(cn=Babs Jensen)"
* "(!(cn=Tim Howes))"
* "(&(" + Constants.OBJECTCLASS + "=Person)(|(sn=Jensen)(cn=Babs J*)))"
* "(o=univ*of*mich*)"
* </pre>
*
* <p>
* The approximate match ({@code ~=}) is implementation specific but should
* at least ignore case and white space differences. Optional are codes like
* soundex or other smart "closeness" comparisons.
*
* <p>
* Comparison of values is not straightforward. Strings are compared
* differently than numbers and it is possible for a key to have multiple
* values. Note that that keys in the match argument must always be strings.
* The comparison is defined by the object type of the key's value. The
* following rules apply for comparison:
*
* <blockquote>
* <TABLE BORDER=0>
* <TR>
* <TD><b>Property Value Type </b></TD>
* <TD><b>Comparison Type</b></TD>
* </TR>
* <TR>
* <TD>String</TD>
* <TD>String comparison</TD>
* </TR>
* <TR valign=top>
* <TD>Integer, Long, Float, Double, Byte, Short, BigInteger, BigDecimal</TD>
* <TD>numerical comparison</TD>
* </TR>
* <TR>
* <TD>Character</TD>
* <TD>character comparison</TD>
* </TR>
* <TR>
* <TD>Boolean</TD>
* <TD>equality comparisons only</TD>
* </TR>
* <TR>
* <TD>[] (array)</TD>
* <TD>recursively applied to values</TD>
* </TR>
* <TR>
* <TD>Collection</TD>
* <TD>recursively applied to values</TD>
* </TR>
* </TABLE>
* Note: arrays of primitives are also supported. </blockquote>
*
* A filter matches a key that has multiple values if it matches at least
* one of those values. For example,
*
* <pre>
* Dictionary d = new Hashtable();
* d.put("cn", new String[] {"a", "b", "c"});
* </pre>
*
* d will match {@code (cn=a)} and also {@code (cn=b)}
*
* <p>
* A filter component that references a key having an unrecognizable data
* type will evaluate to {@code false} .
*/
static private final class FilterImpl implements Filter {
/* filter operators */
private static final int EQUAL = 1;
private static final int APPROX = 2;
private static final int GREATER = 3;
private static final int LESS = 4;
private static final int PRESENT = 5;
private static final int SUBSTRING = 6;
private static final int AND = 7;
private static final int OR = 8;
private static final int NOT = 9;
/** filter operation */
private final int op;
/** filter attribute or null if operation AND, OR or NOT */
private final String attr;
/** filter operands */
private final Object value;
/* normalized filter string for Filter object */
private transient String filterString;
/**
* Constructs a {@link FilterImpl} object. This filter object may be
* used to match a {@link ServiceReference} or a Dictionary.
*
* <p>
* If the filter cannot be parsed, an {@link InvalidSyntaxException}
* will be thrown with a human readable message where the filter became
* unparsable.
*
* @param filterString the filter string.
* @throws InvalidSyntaxException If the filter parameter contains an
* invalid filter string that cannot be parsed.
*/
static FilterImpl newInstance(String filterString) throws InvalidSyntaxException {
return new Parser(filterString).parse();
}
FilterImpl(int operation, String attr, Object value) {
this.op = operation;
this.attr = attr;
this.value = value;
filterString = null;
}
/**
* Filter using a service's properties.
* <p>
* This {@code Filter} is executed using the keys and values of the
* referenced service's properties. The keys are looked up in a case
* insensitive manner.
*
* @param reference The reference to the service whose properties are
* used in the match.
* @return {@code true} if the service's properties match this
* {@code Filter}; {@code false} otherwise.
*/
public boolean match(ServiceReference<?> reference) {
return matches(new ServiceReferenceMap(reference));
}
/**
* Filter using a {@code Dictionary} with case insensitive key lookup.
* This {@code Filter} is executed using the specified
* {@code Dictionary}'s keys and values. The keys are looked up in a
* case insensitive manner.
*
* @param dictionary The {@code Dictionary} whose key/value pairs are
* used in the match.
* @return {@code true} if the {@code Dictionary}'s values match this
* filter; {@code false} otherwise.
* @throws IllegalArgumentException If {@code dictionary} contains case
* variants of the same key name.
*/
public boolean match(Dictionary<String, ?> dictionary) {
return matches(new CaseInsensitiveMap(dictionary));
}
/**
* Filter using a {@code Dictionary}. This {@code Filter} is executed
* using the specified {@code Dictionary}'s keys and values. The keys
* are looked up in a normal manner respecting case.
*
* @param dictionary The {@code Dictionary} whose key/value pairs are
* used in the match.
* @return {@code true} if the {@code Dictionary}'s values match this
* filter; {@code false} otherwise.
* @since 1.3
*/
public boolean matchCase(Dictionary<String, ?> dictionary) {
switch (op) {
case AND : {
FilterImpl[] filters = (FilterImpl[]) value;
for (FilterImpl f : filters) {
if (!f.matchCase(dictionary)) {
return false;
}
}
return true;
}
case OR : {
FilterImpl[] filters = (FilterImpl[]) value;
for (FilterImpl f : filters) {
if (f.matchCase(dictionary)) {
return true;
}
}
return false;
}
case NOT : {
FilterImpl filter = (FilterImpl) value;
return !filter.matchCase(dictionary);
}
case SUBSTRING :
case EQUAL :
case GREATER :
case LESS :
case APPROX : {
Object prop = (dictionary == null) ? null : dictionary.get(attr);
return compare(op, prop, value);
}
case PRESENT : {
Object prop = (dictionary == null) ? null : dictionary.get(attr);
return prop != null;
}
}
return false;
}
/**
* Filter using a {@code Map}. This {@code Filter} is executed using the
* specified {@code Map}'s keys and values. The keys are looked up in a
* normal manner respecting case.
*
* @param map The {@code Map} whose key/value pairs are used in the
* match. Maps with {@code null} key or values are not supported.
* A {@code null} value is considered not present to the filter.
* @return {@code true} if the {@code Map}'s values match this filter;
* {@code false} otherwise.
* @since 1.6
*/
public boolean matches(Map<String, ?> map) {
switch (op) {
case AND : {
FilterImpl[] filters = (FilterImpl[]) value;
for (FilterImpl f : filters) {
if (!f.matches(map)) {
return false;
}
}
return true;
}
case OR : {
FilterImpl[] filters = (FilterImpl[]) value;
for (FilterImpl f : filters) {
if (f.matches(map)) {
return true;
}
}
return false;
}
case NOT : {
FilterImpl filter = (FilterImpl) value;
return !filter.matches(map);
}
case SUBSTRING :
case EQUAL :
case GREATER :
case LESS :
case APPROX : {
Object prop = (map == null) ? null : map.get(attr);
return compare(op, prop, value);
}
case PRESENT : {
Object prop = (map == null) ? null : map.get(attr);
return prop != null;
}
}
return false;
}
/**
* Returns this {@code Filter}'s filter string.
* <p>
* The filter string is normalized by removing whitespace which does not
* affect the meaning of the filter.
*
* @return This {@code Filter}'s filter string.
*/
@Override
public String toString() {
String result = filterString;
if (result == null) {
filterString = result = normalize().toString();
}
return result;
}
/**
* Returns this {@code Filter}'s normalized filter string.
* <p>
* The filter string is normalized by removing whitespace which does not
* affect the meaning of the filter.
*
* @return This {@code Filter}'s filter string.
*/
private StringBuffer normalize() {
StringBuffer sb = new StringBuffer();
sb.append('(');
switch (op) {
case AND : {
sb.append('&');
FilterImpl[] filters = (FilterImpl[]) value;
for (FilterImpl f : filters) {
sb.append(f.normalize());
}
break;
}
case OR : {
sb.append('|');
FilterImpl[] filters = (FilterImpl[]) value;
for (FilterImpl f : filters) {
sb.append(f.normalize());
}
break;
}
case NOT : {
sb.append('!');
FilterImpl filter = (FilterImpl) value;
sb.append(filter.normalize());
break;
}
case SUBSTRING : {
sb.append(attr);
sb.append('=');
String[] substrings = (String[]) value;
for (String substr : substrings) {
if (substr == null) /* * */{
sb.append('*');
} else /* xxx */{
sb.append(encodeValue(substr));
}
}
break;
}
case EQUAL : {
sb.append(attr);
sb.append('=');
sb.append(encodeValue((String) value));
break;
}
case GREATER : {
sb.append(attr);
sb.append(">=");
sb.append(encodeValue((String) value));
break;
}
case LESS : {
sb.append(attr);
sb.append("<=");
sb.append(encodeValue((String) value));
break;
}
case APPROX : {
sb.append(attr);
sb.append("~=");
sb.append(encodeValue(approxString((String) value)));
break;
}
case PRESENT : {
sb.append(attr);
sb.append("=*");
break;
}
}
sb.append(')');
return sb;
}
/**
* Compares this {@code Filter} to another {@code Filter}.
*
* <p>
* This implementation returns the result of calling
* {@code this.toString().equals(obj.toString()}.
*
* @param obj The object to compare against this {@code Filter}.
* @return If the other object is a {@code Filter} object, then returns
* the result of calling
* {@code this.toString().equals(obj.toString()}; {@code false}
* otherwise.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof Filter)) {
return false;
}
return this.toString().equals(obj.toString());
}
/**
* Returns the hashCode for this {@code Filter}.
*
* <p>
* This implementation returns the result of calling
* {@code this.toString().hashCode()}.
*
* @return The hashCode of this {@code Filter}.
*/
@Override
public int hashCode() {
return this.toString().hashCode();
}
/**
* Encode the value string such that '(', '*', ')' and '\' are escaped.
*
* @param value unencoded value string.
* @return encoded value string.
*/
private static String encodeValue(String value) {
boolean encoded = false;
int inlen = value.length();
int outlen = inlen << 1; /* inlen 2 */
char[] output = new char[outlen];
value.getChars(0, inlen, output, inlen);
int cursor = 0;
for (int i = inlen; i < outlen; i++) {
char c = output[i];
switch (c) {
case '(' :
case '*' :
case ')' :
case '\\' : {
output[cursor] = '\\';
cursor++;
encoded = true;
break;
}
}
output[cursor] = c;
cursor++;
}
return encoded ? new String(output, 0, cursor) : value;
}
private boolean compare(int operation, Object value1, Object value2) {
if (value1 == null) {
return false;
}
if (value1 instanceof String) {
return compare_String(operation, (String) value1, value2);
}
Class<?> clazz = value1.getClass();
if (clazz.isArray()) {
Class<?> type = clazz.getComponentType();
if (type.isPrimitive()) {
return compare_PrimitiveArray(operation, type, value1, value2);
}
return compare_ObjectArray(operation, (Object[]) value1, value2);
}
if (value1 instanceof Collection<?>) {
return compare_Collection(operation, (Collection<?>) value1, value2);
}
if (value1 instanceof Integer) {
return compare_Integer(operation, ((Integer) value1).intValue(), value2);
}
if (value1 instanceof Long) {
return compare_Long(operation, ((Long) value1).longValue(), value2);
}
if (value1 instanceof Byte) {
return compare_Byte(operation, ((Byte) value1).byteValue(), value2);
}
if (value1 instanceof Short) {
return compare_Short(operation, ((Short) value1).shortValue(), value2);
}
if (value1 instanceof Character) {
return compare_Character(operation, ((Character) value1).charValue(), value2);
}
if (value1 instanceof Float) {
return compare_Float(operation, ((Float) value1).floatValue(), value2);
}
if (value1 instanceof Double) {
return compare_Double(operation, ((Double) value1).doubleValue(), value2);
}
if (value1 instanceof Boolean) {
return compare_Boolean(operation, ((Boolean) value1).booleanValue(), value2);
}
if (value1 instanceof Comparable<?>) {
@SuppressWarnings("unchecked")
Comparable<Object> comparable = (Comparable<Object>) value1;
return compare_Comparable(operation, comparable, value2);
}
return compare_Unknown(operation, value1, value2);
}
private boolean compare_Collection(int operation, Collection<?> collection, Object value2) {
for (Object value1 : collection) {
if (compare(operation, value1, value2)) {
return true;
}
}
return false;
}
private boolean compare_ObjectArray(int operation, Object[] array, Object value2) {
for (Object value1 : array) {
if (compare(operation, value1, value2)) {
return true;
}
}
return false;
}
private boolean compare_PrimitiveArray(int operation, Class<?> type, Object primarray, Object value2) {
if (Integer.TYPE.isAssignableFrom(type)) {
int[] array = (int[]) primarray;
for (int value1 : array) {
if (compare_Integer(operation, value1, value2)) {
return true;
}
}
return false;
}
if (Long.TYPE.isAssignableFrom(type)) {
long[] array = (long[]) primarray;
for (long value1 : array) {
if (compare_Long(operation, value1, value2)) {
return true;
}
}
return false;
}
if (Byte.TYPE.isAssignableFrom(type)) {
byte[] array = (byte[]) primarray;
for (byte value1 : array) {
if (compare_Byte(operation, value1, value2)) {
return true;
}
}
return false;
}
if (Short.TYPE.isAssignableFrom(type)) {
short[] array = (short[]) primarray;
for (short value1 : array) {
if (compare_Short(operation, value1, value2)) {
return true;
}
}
return false;
}
if (Character.TYPE.isAssignableFrom(type)) {
char[] array = (char[]) primarray;
for (char value1 : array) {
if (compare_Character(operation, value1, value2)) {
return true;
}
}
return false;
}
if (Float.TYPE.isAssignableFrom(type)) {
float[] array = (float[]) primarray;
for (float value1 : array) {
if (compare_Float(operation, value1, value2)) {
return true;
}
}
return false;
}
if (Double.TYPE.isAssignableFrom(type)) {
double[] array = (double[]) primarray;
for (double value1 : array) {
if (compare_Double(operation, value1, value2)) {
return true;
}
}
return false;
}
if (Boolean.TYPE.isAssignableFrom(type)) {
boolean[] array = (boolean[]) primarray;
for (boolean value1 : array) {
if (compare_Boolean(operation, value1, value2)) {
return true;
}
}
return false;
}
return false;
}
private boolean compare_String(int operation, String string, Object value2) {
switch (operation) {
case SUBSTRING : {
String[] substrings = (String[]) value2;
int pos = 0;
for (int i = 0, size = substrings.length; i < size; i++) {
String substr = substrings[i];
if (i + 1 < size) /* if this is not that last substr */{
if (substr == null) /* * */{
String substr2 = substrings[i + 1];
if (substr2 == null) /* ** */
continue; /* ignore first star */
/* xxx */
int index = string.indexOf(substr2, pos);
if (index == -1) {
return false;
}
pos = index + substr2.length();
if (i + 2 < size) // if there are more
// substrings, increment
// over the string we just
// matched; otherwise need
// to do the last substr
// check
i++;
} else /* xxx */{
int len = substr.length();
if (string.regionMatches(pos, substr, 0, len)) {
pos += len;
} else {
return false;
}
}
} else /* last substr */{
if (substr == null) /* * */{
return true;
}
/* xxx */
return string.endsWith(substr);
}
}
return true;
}
case EQUAL : {
return string.equals(value2);
}
case APPROX : {
string = approxString(string);
String string2 = approxString((String) value2);
return string.equalsIgnoreCase(string2);
}
case GREATER : {
return string.compareTo((String) value2) >= 0;
}
case LESS : {
return string.compareTo((String) value2) <= 0;
}
}
return false;
}
private boolean compare_Integer(int operation, int intval, Object value2) {
if (operation == SUBSTRING) {
return false;
}
int intval2;
try {
intval2 = Integer.parseInt(((String) value2).trim());
} catch (IllegalArgumentException e) {
return false;
}
switch (operation) {
case APPROX :
case EQUAL : {
return intval == intval2;
}
case GREATER : {
return intval >= intval2;
}
case LESS : {
return intval <= intval2;
}
}
return false;
}
private boolean compare_Long(int operation, long longval, Object value2) {
if (operation == SUBSTRING) {
return false;
}
long longval2;
try {
longval2 = Long.parseLong(((String) value2).trim());
} catch (IllegalArgumentException e) {
return false;
}
switch (operation) {
case APPROX :
case EQUAL : {
return longval == longval2;
}
case GREATER : {
return longval >= longval2;
}
case LESS : {
return longval <= longval2;
}
}
return false;
}
private boolean compare_Byte(int operation, byte byteval, Object value2) {
if (operation == SUBSTRING) {
return false;
}
byte byteval2;
try {
byteval2 = Byte.parseByte(((String) value2).trim());
} catch (IllegalArgumentException e) {
return false;
}
switch (operation) {
case APPROX :
case EQUAL : {
return byteval == byteval2;
}
case GREATER : {
return byteval >= byteval2;
}
case LESS : {
return byteval <= byteval2;
}
}
return false;
}
private boolean compare_Short(int operation, short shortval, Object value2) {
if (operation == SUBSTRING) {
return false;
}
short shortval2;
try {
shortval2 = Short.parseShort(((String) value2).trim());
} catch (IllegalArgumentException e) {
return false;
}
switch (operation) {
case APPROX :
case EQUAL : {
return shortval == shortval2;
}
case GREATER : {
return shortval >= shortval2;
}
case LESS : {
return shortval <= shortval2;
}
}
return false;
}
private boolean compare_Character(int operation, char charval, Object value2) {
if (operation == SUBSTRING) {
return false;
}
char charval2;
try {
charval2 = ((String) value2).charAt(0);
} catch (IndexOutOfBoundsException e) {
return false;
}
switch (operation) {
case EQUAL : {
return charval == charval2;
}
case APPROX : {
return (charval == charval2) || (Character.toUpperCase(charval) == Character.toUpperCase(charval2)) || (Character.toLowerCase(charval) == Character.toLowerCase(charval2));
}
case GREATER : {
return charval >= charval2;
}
case LESS : {
return charval <= charval2;
}
}
return false;
}
private boolean compare_Boolean(int operation, boolean boolval, Object value2) {
if (operation == SUBSTRING) {
return false;
}
boolean boolval2 = Boolean.valueOf(((String) value2).trim()).booleanValue();
switch (operation) {
case APPROX :
case EQUAL :
case GREATER :
case LESS : {
return boolval == boolval2;
}
}
return false;
}
private boolean compare_Float(int operation, float floatval, Object value2) {
if (operation == SUBSTRING) {
return false;
}
float floatval2;
try {
floatval2 = Float.parseFloat(((String) value2).trim());
} catch (IllegalArgumentException e) {
return false;
}
switch (operation) {
case APPROX :
case EQUAL : {
return Float.compare(floatval, floatval2) == 0;
}
case GREATER : {
return Float.compare(floatval, floatval2) >= 0;
}
case LESS : {
return Float.compare(floatval, floatval2) <= 0;
}
}
return false;
}
private boolean compare_Double(int operation, double doubleval, Object value2) {
if (operation == SUBSTRING) {
return false;
}
double doubleval2;
try {
doubleval2 = Double.parseDouble(((String) value2).trim());
} catch (IllegalArgumentException e) {
return false;
}
switch (operation) {
case APPROX :
case EQUAL : {
return Double.compare(doubleval, doubleval2) == 0;
}
case GREATER : {
return Double.compare(doubleval, doubleval2) >= 0;
}
case LESS : {
return Double.compare(doubleval, doubleval2) <= 0;
}
}
return false;
}
private static Object valueOf(Class<?> target, String value2) {
do {
Method method;
try {
method = target.getMethod("valueOf", String.class);
} catch (NoSuchMethodException e) {
break;
}
if (Modifier.isStatic(method.getModifiers()) && target.isAssignableFrom(method.getReturnType())) {
setAccessible(method);
try {
return method.invoke(null, value2.trim());
} catch (IllegalAccessException e) {
return null;
} catch (InvocationTargetException e) {
return null;
}
}
} while (false);
do {
Constructor<?> constructor;
try {
constructor = target.getConstructor(String.class);
} catch (NoSuchMethodException e) {
break;
}
setAccessible(constructor);
try {
return constructor.newInstance(value2.trim());
} catch (IllegalAccessException e) {
return null;
} catch (InvocationTargetException e) {
return null;
} catch (InstantiationException e) {
return null;
}
} while (false);
return null;
}
private static void setAccessible(AccessibleObject accessible) {
if (!accessible.isAccessible()) {
AccessController.doPrivileged(new SetAccessibleAction(accessible));
}
}
private boolean compare_Comparable(int operation, Comparable<Object> value1, Object value2) {
if (operation == SUBSTRING) {
return false;
}
value2 = valueOf(value1.getClass(), (String) value2);
if (value2 == null) {
return false;
}
try {
switch (operation) {
case APPROX :
case EQUAL : {
return value1.compareTo(value2) == 0;
}
case GREATER : {
return value1.compareTo(value2) >= 0;
}
case LESS : {
return value1.compareTo(value2) <= 0;
}
}
} catch (Exception e) {
// if the compareTo method throws an exception; return false
return false;
}
return false;
}
private boolean compare_Unknown(int operation, Object value1, Object value2) {
if (operation == SUBSTRING) {
return false;
}
value2 = valueOf(value1.getClass(), (String) value2);
if (value2 == null) {
return false;
}
try {
switch (operation) {
case APPROX :
case EQUAL :
case GREATER :
case LESS : {
return value1.equals(value2);
}
}
} catch (Exception e) {
// if the equals method throws an exception; return false
return false;
}
return false;
}
/**
* Map a string for an APPROX (~=) comparison.
*
* This implementation removes white spaces. This is the minimum
* implementation allowed by the OSGi spec.
*
* @param input Input string.
* @return String ready for APPROX comparison.
*/
private static String approxString(String input) {
boolean changed = false;
char[] output = input.toCharArray();
int cursor = 0;
for (char c : output) {
if (Character.isWhitespace(c)) {
changed = true;
continue;
}
output[cursor] = c;
cursor++;
}
return changed ? new String(output, 0, cursor) : input;
}
/**
* Parser class for OSGi filter strings. This class parses the complete
* filter string and builds a tree of Filter objects rooted at the
* parent.
*/
static private final class Parser {
private final String filterstring;
private final char[] filterChars;
private int pos;
Parser(String filterstring) {
this.filterstring = filterstring;
filterChars = filterstring.toCharArray();
pos = 0;
}
FilterImpl parse() throws InvalidSyntaxException {
FilterImpl filter;
try {
filter = parse_filter();
} catch (ArrayIndexOutOfBoundsException e) {
throw new InvalidSyntaxException("Filter ended abruptly", filterstring, e);
}
if (pos != filterChars.length) {
throw new InvalidSyntaxException("Extraneous trailing characters: " + filterstring.substring(pos), filterstring);
}
return filter;
}
private FilterImpl parse_filter() throws InvalidSyntaxException {
FilterImpl filter;
skipWhiteSpace();
if (filterChars[pos] != '(') {
throw new InvalidSyntaxException("Missing '(': " + filterstring.substring(pos), filterstring);
}
pos++;
filter = parse_filtercomp();
skipWhiteSpace();
if (filterChars[pos] != ')') {
throw new InvalidSyntaxException("Missing ')': " + filterstring.substring(pos), filterstring);
}
pos++;
skipWhiteSpace();
return filter;
}
private FilterImpl parse_filtercomp() throws InvalidSyntaxException {
skipWhiteSpace();
char c = filterChars[pos];
switch (c) {
case '&' : {
pos++;
return parse_and();
}
case '|' : {
pos++;
return parse_or();
}
case '!' : {
pos++;
return parse_not();
}
}
return parse_item();
}
private FilterImpl parse_and() throws InvalidSyntaxException {
int lookahead = pos;
skipWhiteSpace();
if (filterChars[pos] != '(') {
pos = lookahead - 1;
return parse_item();
}
List<FilterImpl> operands = new ArrayList<FilterImpl>(10);
while (filterChars[pos] == '(') {
FilterImpl child = parse_filter();
operands.add(child);
}
return new FilterImpl(FilterImpl.AND, null, operands.toArray(new FilterImpl[operands.size()]));
}
private FilterImpl parse_or() throws InvalidSyntaxException {
int lookahead = pos;
skipWhiteSpace();
if (filterChars[pos] != '(') {
pos = lookahead - 1;
return parse_item();
}
List<FilterImpl> operands = new ArrayList<FilterImpl>(10);
while (filterChars[pos] == '(') {
FilterImpl child = parse_filter();
operands.add(child);
}
return new FilterImpl(FilterImpl.OR, null, operands.toArray(new FilterImpl[operands.size()]));
}
private FilterImpl parse_not() throws InvalidSyntaxException {
int lookahead = pos;
skipWhiteSpace();
if (filterChars[pos] != '(') {
pos = lookahead - 1;
return parse_item();
}
FilterImpl child = parse_filter();
return new FilterImpl(FilterImpl.NOT, null, child);
}
private FilterImpl parse_item() throws InvalidSyntaxException {
String attr = parse_attr();
skipWhiteSpace();
switch (filterChars[pos]) {
case '~' : {
if (filterChars[pos + 1] == '=') {
pos += 2;
return new FilterImpl(FilterImpl.APPROX, attr, parse_value());
}
break;
}
case '>' : {
if (filterChars[pos + 1] == '=') {
pos += 2;
return new FilterImpl(FilterImpl.GREATER, attr, parse_value());
}
break;
}
case '<' : {
if (filterChars[pos + 1] == '=') {
pos += 2;
return new FilterImpl(FilterImpl.LESS, attr, parse_value());
}
break;
}
case '=' : {
if (filterChars[pos + 1] == '*') {
int oldpos = pos;
pos += 2;
skipWhiteSpace();
if (filterChars[pos] == ')') {
return new FilterImpl(FilterImpl.PRESENT, attr, null);
}
pos = oldpos;
}
pos++;
Object string = parse_substring();
if (string instanceof String) {
return new FilterImpl(FilterImpl.EQUAL, attr, string);
}
return new FilterImpl(FilterImpl.SUBSTRING, attr, string);
}
}
throw new InvalidSyntaxException("Invalid operator: " + filterstring.substring(pos), filterstring);
}
private String parse_attr() throws InvalidSyntaxException {
skipWhiteSpace();
int begin = pos;
int end = pos;
char c = filterChars[pos];
while (c != '~' && c != '<' && c != '>' && c != '=' && c != '(' && c != ')') {
pos++;
if (!Character.isWhitespace(c)) {
end = pos;
}
c = filterChars[pos];
}
int length = end - begin;
if (length == 0) {
throw new InvalidSyntaxException("Missing attr: " + filterstring.substring(pos), filterstring);
}
return new String(filterChars, begin, length);
}
private String parse_value() throws InvalidSyntaxException {
StringBuffer sb = new StringBuffer(filterChars.length - pos);
parseloop: while (true) {
char c = filterChars[pos];
switch (c) {
case ')' : {
break parseloop;
}
case '(' : {
throw new InvalidSyntaxException("Invalid value: " + filterstring.substring(pos), filterstring);
}
case '\\' : {
pos++;
c = filterChars[pos];
/* fall through into default */
}
default : {
sb.append(c);
pos++;
break;
}
}
}
if (sb.length() == 0) {
throw new InvalidSyntaxException("Missing value: " + filterstring.substring(pos), filterstring);
}
return sb.toString();
}
private Object parse_substring() throws InvalidSyntaxException {
StringBuffer sb = new StringBuffer(filterChars.length - pos);
List<String> operands = new ArrayList<String>(10);
parseloop: while (true) {
char c = filterChars[pos];
switch (c) {
case ')' : {
if (sb.length() > 0) {
operands.add(sb.toString());
}
break parseloop;
}
case '(' : {
throw new InvalidSyntaxException("Invalid value: " + filterstring.substring(pos), filterstring);
}
case '*' : {
if (sb.length() > 0) {
operands.add(sb.toString());
}
sb.setLength(0);
operands.add(null);
pos++;
break;
}
case '\\' : {
pos++;
c = filterChars[pos];
/* fall through into default */
}
default : {
sb.append(c);
pos++;
break;
}
}
}
int size = operands.size();
if (size == 0) {
return "";
}
if (size == 1) {
Object single = operands.get(0);
if (single != null) {
return single;
}
}
return operands.toArray(new String[size]);
}
private void skipWhiteSpace() {
for (int length = filterChars.length; (pos < length) && Character.isWhitespace(filterChars[pos]);) {
pos++;
}
}
}
}
/**
* This Map is used for case-insensitive key lookup during filter
* evaluation. This Map implementation only supports the get operation using
* a String key as no other operations are used by the Filter
* implementation.
*/
static private final class CaseInsensitiveMap extends AbstractMap<String, Object> implements Map<String, Object> {
private final Dictionary<String, ?> dictionary;
private final String[] keys;
/**
* Create a case insensitive map from the specified dictionary.
*
* @param dictionary
* @throws IllegalArgumentException If {@code dictionary} contains case
* variants of the same key name.
*/
CaseInsensitiveMap(Dictionary<String, ?> dictionary) {
if (dictionary == null) {
this.dictionary = null;
this.keys = new String[0];
return;
}
this.dictionary = dictionary;
List<String> keyList = new ArrayList<String>(dictionary.size());
for (Enumeration<?> e = dictionary.keys(); e.hasMoreElements();) {
Object k = e.nextElement();
if (k instanceof String) {
String key = (String) k;
for (String i : keyList) {
if (key.equalsIgnoreCase(i)) {
throw new IllegalArgumentException();
}
}
keyList.add(key);
}
}
this.keys = keyList.toArray(new String[keyList.size()]);
}
@Override
public Object get(Object o) {
String k = (String) o;
for (String key : keys) {
if (key.equalsIgnoreCase(k)) {
return dictionary.get(key);
}
}
return null;
}
public Set<java.util.Map.Entry<String, Object>> entrySet() {
throw new UnsupportedOperationException();
}
}
/**
* This Map is used for key lookup from a ServiceReference during filter
* evaluation. This Map implementation only supports the get operation using
* a String key as no other operations are used by the Filter
* implementation.
*/
static private final class ServiceReferenceMap extends AbstractMap<String, Object> implements Map<String, Object> {
private final ServiceReference<?> reference;
ServiceReferenceMap(ServiceReference<?> reference) {
this.reference = reference;
}
@Override
public Object get(Object key) {
if (reference == null) {
return null;
}
return reference.getProperty((String) key);
}
public Set<java.util.Map.Entry<String, Object>> entrySet() {
throw new UnsupportedOperationException();
}
}
static private final class SetAccessibleAction implements PrivilegedAction<Void> {
private final AccessibleObject accessible;
SetAccessibleAction(AccessibleObject accessible) {
this.accessible = accessible;
}
public Void run() {
accessible.setAccessible(true);
return null;
}
}
/**
* This class contains a method to match a distinguished name (DN) chain
* against and DN chain pattern.
* <p>
* The format of DNs are given in RFC 2253. We represent a signature chain
* for an X.509 certificate as a semicolon separated list of DNs. This is
* what we refer to as the DN chain. Each DN is made up of relative
* distinguished names (RDN) which in turn are made up of key value pairs.
* For example:
*
* <pre>
* cn=ben+ou=research,o=ACME,c=us;ou=Super CA,c=CA
* </pre>
*
* is made up of two DNs: "{@code cn=ben+ou=research,o=ACME,c=us} " and "
* {@code ou=Super CA,c=CA} ". The first DN is made of of three RDNs: "
* {@code cn=ben+ou=research}" and "{@code o=ACME}" and " {@code c=us}
* ". The first RDN has two name value pairs: " {@code cn=ben}" and "
* {@code ou=research}".
* <p>
* A chain pattern makes use of wildcards ('*' or '-') to match against DNs,
* and wildcards ('*') to match againts DN prefixes, and value. If a DN in a
* match pattern chain is made up of a wildcard ("*"), that wildcard will
* match zero or one DNs in the chain. If a DN in a match pattern chain is
* made up of a wildcard ("-"), that wildcard will match zero or more DNs in
* the chain. If the first RDN of a DN is the wildcard ("*"), that DN will
* match any other DN with the same suffix (the DN with the wildcard RDN
* removed). If a value of a name/value pair is a wildcard ("*"), the value
* will match any value for that name.
*/
static private final class DNChainMatching {
private static final String MINUS_WILDCARD = "-";
private static final String STAR_WILDCARD = "*";
/**
* Check the name/value pairs of the rdn against the pattern.
*
* @param rdn List of name value pairs for a given RDN.
* @param rdnPattern List of name value pattern pairs.
* @return true if the list of name value pairs match the pattern.
*/
private static boolean rdnmatch(List<?> rdn, List<?> rdnPattern) {
if (rdn.size() != rdnPattern.size()) {
return false;
}
for (int i = 0; i < rdn.size(); i++) {
String rdnNameValue = (String) rdn.get(i);
String patNameValue = (String) rdnPattern.get(i);
int rdnNameEnd = rdnNameValue.indexOf('=');
int patNameEnd = patNameValue.indexOf('=');
if (rdnNameEnd != patNameEnd || !rdnNameValue.regionMatches(0, patNameValue, 0, rdnNameEnd)) {
return false;
}
String patValue = patNameValue.substring(patNameEnd);
String rdnValue = rdnNameValue.substring(rdnNameEnd);
if (!rdnValue.equals(patValue) && !patValue.equals("=*") && !patValue.equals("=#16012a")) {
return false;
}
}
return true;
}
private static boolean dnmatch(List<?> dn, List<?> dnPattern) {
int dnStart = 0;
int patStart = 0;
int patLen = dnPattern.size();
if (patLen == 0) {
return false;
}
if (dnPattern.get(0).equals(STAR_WILDCARD)) {
patStart = 1;
patLen--;
}
if (dn.size() < patLen) {
return false;
} else {
if (dn.size() > patLen) {
if (!dnPattern.get(0).equals(STAR_WILDCARD)) {
// If the number of rdns do not match we must have a
// prefix map
return false;
}
// The rdnPattern and rdn must have the same number of
// elements
dnStart = dn.size() - patLen;
}
}
for (int i = 0; i < patLen; i++) {
if (!rdnmatch((List<?>) dn.get(i + dnStart), (List<?>) dnPattern.get(i + patStart))) {
return false;
}
}
return true;
}
/**
* Parses a distinguished name chain pattern and returns a List where
* each element represents a distinguished name (DN) in the chain of
* DNs. Each element will be either a String, if the element represents
* a wildcard ("*" or "-"), or a List representing an RDN. Each element
* in the RDN List will be a String, if the element represents a
* wildcard ("*"), or a List of Strings, each String representing a
* name/value pair in the RDN.
*
* @param pattern
* @return a list of DNs.
* @throws IllegalArgumentException
*/
private static List<Object> parseDNchainPattern(String pattern) {
if (pattern == null) {
throw new IllegalArgumentException("The pattern must not be null.");
}
List<Object> parsed = new ArrayList<Object>();
final int length = pattern.length();
char c = ';'; // start with semi-colon to detect empty pattern
for (int startIndex = skipSpaces(pattern, 0); startIndex < length;) {
int cursor = startIndex;
int endIndex = startIndex;
out: for (boolean inQuote = false; cursor < length; cursor++) {
c = pattern.charAt(cursor);
switch (c) {
case '"' :
inQuote = !inQuote;
break;
case '\\' :
cursor++; // skip the escaped char
if (cursor == length) {
throw new IllegalArgumentException("unterminated escape");
}
break;
case ';' :
if (!inQuote) {
break out; // end of pattern
}
break;
}
if (c != ' ') { // ignore trailing whitespace
endIndex = cursor + 1;
}
}
parsed.add(pattern.substring(startIndex, endIndex));
startIndex = skipSpaces(pattern, cursor + 1);
}
if (c == ';') { // last non-whitespace character was a semi-colon
throw new IllegalArgumentException("empty pattern");
}
// Now we have parsed into a list of strings, lets make List of rdn
// out of them
for (int i = 0; i < parsed.size(); i++) {
String dn = (String) parsed.get(i);
if (dn.equals(STAR_WILDCARD) || dn.equals(MINUS_WILDCARD)) {
continue;
}
List<Object> rdns = new ArrayList<Object>();
if (dn.charAt(0) == '*') {
int index = skipSpaces(dn, 1);
if (dn.charAt(index) != ',') {
throw new IllegalArgumentException("invalid wildcard prefix");
}
rdns.add(STAR_WILDCARD);
dn = new X500Principal(dn.substring(index + 1)).getName(X500Principal.CANONICAL);
} else {
dn = new X500Principal(dn).getName(X500Principal.CANONICAL);
}
// Now dn is a nice CANONICAL DN
parseDN(dn, rdns);
parsed.set(i, rdns);
}
return parsed;
}
private static List<Object> parseDNchain(List<String> chain) {
if (chain == null) {
throw new IllegalArgumentException("DN chain must not be null.");
}
List<Object> result = new ArrayList<Object>(chain.size());
// Now we parse is a list of strings, lets make List of rdn out
// of them
for (String dn : chain) {
dn = new X500Principal(dn).getName(X500Principal.CANONICAL);
// Now dn is a nice CANONICAL DN
List<Object> rdns = new ArrayList<Object>();
parseDN(dn, rdns);
result.add(rdns);
}
if (result.size() == 0) {
throw new IllegalArgumentException("empty DN chain");
}
return result;
}
/**
* Increment startIndex until the end of dnChain is hit or until it is
* the index of a non-space character.
*/
private static int skipSpaces(String dnChain, int startIndex) {
while (startIndex < dnChain.length() && dnChain.charAt(startIndex) == ' ') {
startIndex++;
}
return startIndex;
}
/**
* Takes a distinguished name in canonical form and fills in the
* rdnArray with the extracted RDNs.
*
* @param dn the distinguished name in canonical form.
* @param rdn the list to fill in with RDNs extracted from the dn
* @throws IllegalArgumentException if a formatting error is found.
*/
private static void parseDN(String dn, List<Object> rdn) {
int startIndex = 0;
char c = '\0';
List<String> nameValues = new ArrayList<String>();
while (startIndex < dn.length()) {
int endIndex;
for (endIndex = startIndex; endIndex < dn.length(); endIndex++) {
c = dn.charAt(endIndex);
if (c == ',' || c == '+') {
break;
}
if (c == '\\') {
endIndex++; // skip the escaped char
}
}
if (endIndex > dn.length()) {
throw new IllegalArgumentException("unterminated escape " + dn);
}
nameValues.add(dn.substring(startIndex, endIndex));
if (c != '+') {
rdn.add(nameValues);
if (endIndex != dn.length()) {
nameValues = new ArrayList<String>();
} else {
nameValues = null;
}
}
startIndex = endIndex + 1;
}
if (nameValues != null) {
throw new IllegalArgumentException("improperly terminated DN " + dn);
}
}
/**
* This method will return an 'index' which points to a non-wildcard DN
* or the end-of-list.
*/
private static int skipWildCards(List<Object> dnChainPattern, int dnChainPatternIndex) {
int i;
for (i = dnChainPatternIndex; i < dnChainPattern.size(); i++) {
Object dnPattern = dnChainPattern.get(i);
if (dnPattern instanceof String) {
if (!dnPattern.equals(STAR_WILDCARD) && !dnPattern.equals(MINUS_WILDCARD)) {
throw new IllegalArgumentException("expected wildcard in DN pattern");
}
// otherwise continue skipping over wild cards
} else {
if (dnPattern instanceof List<?>) {
// if its a list then we have our 'non-wildcard' DN
break;
} else {
// unknown member of the DNChainPattern
throw new IllegalArgumentException("expected String or List in DN Pattern");
}
}
}
// i either points to end-of-list, or to the first
// non-wildcard pattern after dnChainPatternIndex
return i;
}
/**
* recursively attempt to match the DNChain, and the DNChainPattern
* where DNChain is of the format: "DN;DN;DN;" and DNChainPattern is of
* the format: "DNPattern;*;DNPattern" (or combinations of this)
*/
private static boolean dnChainMatch(List<Object> dnChain, int dnChainIndex, List<Object> dnChainPattern, int dnChainPatternIndex) throws IllegalArgumentException {
if (dnChainIndex >= dnChain.size()) {
return false;
}
if (dnChainPatternIndex >= dnChainPattern.size()) {
return false;
}
// check to see what the pattern starts with
Object dnPattern = dnChainPattern.get(dnChainPatternIndex);
if (dnPattern instanceof String) {
if (!dnPattern.equals(STAR_WILDCARD) && !dnPattern.equals(MINUS_WILDCARD)) {
throw new IllegalArgumentException("expected wildcard in DN pattern");
}
// here we are processing a wild card as the first DN
// skip all wildcard DN's
if (dnPattern.equals(MINUS_WILDCARD)) {
dnChainPatternIndex = skipWildCards(dnChainPattern, dnChainPatternIndex);
} else {
dnChainPatternIndex++; // only skip the '*' wildcard
}
if (dnChainPatternIndex >= dnChainPattern.size()) {
// return true iff the wild card is '-' or if we are at the
// end of the chain
return dnPattern.equals(MINUS_WILDCARD) ? true : dnChain.size() - 1 == dnChainIndex;
}
//
// we will now recursively call to see if the rest of the
// DNChainPattern matches increasingly smaller portions of the
// rest of the DNChain
//
if (dnPattern.equals(STAR_WILDCARD)) {
// '*' option: only wildcard on 0 or 1
return dnChainMatch(dnChain, dnChainIndex, dnChainPattern, dnChainPatternIndex) || dnChainMatch(dnChain, dnChainIndex + 1, dnChainPattern, dnChainPatternIndex);
}
for (int i = dnChainIndex; i < dnChain.size(); i++) {
// '-' option: wildcard 0 or more
if (dnChainMatch(dnChain, i, dnChainPattern, dnChainPatternIndex)) {
return true;
}
}
// if we are here, then we didn't find a match.. fall through to
// failure
} else {
if (dnPattern instanceof List<?>) {
// here we have to do a deeper check for each DN in the
// pattern until we hit a wild card
do {
if (!dnmatch((List<?>) dnChain.get(dnChainIndex), (List<?>) dnPattern)) {
return false;
}
// go to the next set of DN's in both chains
dnChainIndex++;
dnChainPatternIndex++;
// if we finished the pattern then it all matched
if ((dnChainIndex >= dnChain.size()) && (dnChainPatternIndex >= dnChainPattern.size())) {
return true;
}
// if the DN Chain is finished, but the pattern isn't
// finished then if the rest of the pattern is not
// wildcard then we are done
if (dnChainIndex >= dnChain.size()) {
dnChainPatternIndex = skipWildCards(dnChainPattern, dnChainPatternIndex);
// return TRUE iff the pattern index moved past the
// list-size (implying that the rest of the pattern
// is all wildcards)
return dnChainPatternIndex >= dnChainPattern.size();
}
// if the pattern finished, but the chain continues then
// we have a mis-match
if (dnChainPatternIndex >= dnChainPattern.size()) {
return false;
}
// get the next DN Pattern
dnPattern = dnChainPattern.get(dnChainPatternIndex);
if (dnPattern instanceof String) {
if (!dnPattern.equals(STAR_WILDCARD) && !dnPattern.equals(MINUS_WILDCARD)) {
throw new IllegalArgumentException("expected wildcard in DN pattern");
}
// if the next DN is a 'wildcard', then we will
// recurse
return dnChainMatch(dnChain, dnChainIndex, dnChainPattern, dnChainPatternIndex);
} else {
if (!(dnPattern instanceof List<?>)) {
throw new IllegalArgumentException("expected String or List in DN Pattern");
}
}
// if we are here, then we will just continue to the
// match the next set of DN's from the DNChain, and the
// DNChainPattern since both are lists
} while (true);
// should never reach here?
} else {
throw new IllegalArgumentException("expected String or List in DN Pattern");
}
}
// if we get here, the the default return is 'mis-match'
return false;
}
/**
* Matches a distinguished name chain against a pattern of a
* distinguished name chain.
*
* @param dnChain
* @param pattern the pattern of distinguished name (DN) chains to match
* against the dnChain. Wildcards ("*" or "-") can be used in
* three cases:
* <ol>
* <li>As a DN. In this case, the DN will consist of just the "*"
* or "-". When "*" is used it will match zero or one DNs. When
* "-" is used it will match zero or more DNs. For example,
* "cn=me,c=US;*;cn=you" will match
* "cn=me,c=US";cn=you" and "cn=me,c=US;cn=her;cn=you". The
* pattern "cn=me,c=US;-;cn=you" will match "cn=me,c=US";cn=you"
* and "cn=me,c=US;cn=her;cn=him;cn=you".</li>
* <li>As a DN prefix. In this case, the DN must start with "*,".
* The wild card will match zero or more RDNs at the start of a
* DN. For example, "*,cn=me,c=US;cn=you" will match
* "cn=me,c=US";cn=you" and
* "ou=my org unit,o=my org,cn=me,c=US;cn=you"</li>
* <li>As a value. In this case the value of a name value pair in
* an RDN will be a "*". The wildcard will match any value for
* the given name. For example, "cn=*,c=US;cn=you" will match
* "cn=me,c=US";cn=you" and "cn=her,c=US;cn=you", but it will not
* match "ou=my org unit,c=US;cn=you". If the wildcard does not
* occur by itself in the value, it will not be used as a
* wildcard. In other words, "cn=m*,c=US;cn=you" represents the
* common name of "m*" not any common name starting with "m".</li>
* </ol>
* @return true if dnChain matches the pattern.
* @throws IllegalArgumentException
*/
static boolean match(String pattern, List<String> dnChain) {
List<Object> parsedDNChain;
List<Object> parsedDNPattern;
try {
parsedDNChain = parseDNchain(dnChain);
} catch (RuntimeException e) {
IllegalArgumentException iae = new IllegalArgumentException("Invalid DN chain: " + toString(dnChain));
iae.initCause(e);
throw iae;
}
try {
parsedDNPattern = parseDNchainPattern(pattern);
} catch (RuntimeException e) {
IllegalArgumentException iae = new IllegalArgumentException("Invalid match pattern: " + pattern);
iae.initCause(e);
throw iae;
}
return dnChainMatch(parsedDNChain, 0, parsedDNPattern, 0);
}
private static String toString(List<?> dnChain) {
if (dnChain == null) {
return null;
}
StringBuffer sb = new StringBuffer();
for (Iterator<?> iChain = dnChain.iterator(); iChain.hasNext();) {
sb.append(iChain.next());
if (iChain.hasNext()) {
sb.append("; ");
}
}
return sb.toString();
}
}
}