1381 lines
51 KiB
Java
1381 lines
51 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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* Copyright (c) 1996, 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.security.x509;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.Reader;
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import java.security.AccessController;
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import java.text.Normalizer;
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import java.util.*;
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import sun.security.action.GetBooleanAction;
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import sun.security.util.*;
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import sun.security.pkcs.PKCS9Attribute;
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/**
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* X.500 Attribute-Value-Assertion (AVA): an attribute, as identified by
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* some attribute ID, has some particular value. Values are as a rule ASN.1
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* printable strings. A conventional set of type IDs is recognized when
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* parsing (and generating) RFC 1779, 2253 or 4514 syntax strings.
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*
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* <P>AVAs are components of X.500 relative names. Think of them as being
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* individual fields of a database record. The attribute ID is how you
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* identify the field, and the value is part of a particular record.
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* <p>
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* Note that instances of this class are immutable.
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*
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* @see X500Name
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* @see RDN
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*
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*
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* @author David Brownell
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* @author Amit Kapoor
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* @author Hemma Prafullchandra
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*/
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public class AVA implements DerEncoder {
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private static final Debug debug = Debug.getInstance("x509", "\t[AVA]");
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// See CR 6391482: if enabled this flag preserves the old but incorrect
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// PrintableString encoding for DomainComponent. It may need to be set to
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// avoid breaking preexisting certificates generated with sun.security APIs.
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private static final boolean PRESERVE_OLD_DC_ENCODING =
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AccessController.doPrivileged(new GetBooleanAction
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("com.sun.security.preserveOldDCEncoding"));
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/**
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* DEFAULT format allows both RFC1779 and RFC2253 syntax and
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* additional keywords.
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*/
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final static int DEFAULT = 1;
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/**
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* RFC1779 specifies format according to RFC1779.
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*/
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final static int RFC1779 = 2;
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/**
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* RFC2253 specifies format according to RFC2253.
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*/
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final static int RFC2253 = 3;
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// currently not private, accessed directly from RDN
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final ObjectIdentifier oid;
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final DerValue value;
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/*
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* If the value has any of these characters in it, it must be quoted.
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* Backslash and quote characters must also be individually escaped.
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* Leading and trailing spaces, also multiple internal spaces, also
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* call for quoting the whole string.
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*/
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private static final String specialChars1779 = ",=\n+<>#;\\\"";
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/*
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* In RFC2253, if the value has any of these characters in it, it
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* must be quoted by a preceding \.
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*/
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private static final String specialChars2253 = ",=+<>#;\\\"";
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/*
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* includes special chars from RFC1779 and RFC2253, as well as ' ' from
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* RFC 4514.
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*/
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private static final String specialCharsDefault = ",=\n+<>#;\\\" ";
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private static final String escapedDefault = ",+<>;\"";
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/*
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* Values that aren't printable strings are emitted as BER-encoded
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* hex data.
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*/
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private static final String hexDigits = "0123456789ABCDEF";
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public AVA(ObjectIdentifier type, DerValue val) {
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if ((type == null) || (val == null)) {
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throw new NullPointerException();
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}
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oid = type;
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value = val;
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}
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/**
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* Parse an RFC 1779, 2253 or 4514 style AVA string: CN=fee fie foe fum
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* or perhaps with quotes. Not all defined AVA tags are supported;
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* of current note are X.400 related ones (PRMD, ADMD, etc).
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*
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* This terminates at unescaped AVA separators ("+") or RDN
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* separators (",", ";"), and removes cosmetic whitespace at the end of
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* values.
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*/
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AVA(Reader in) throws IOException {
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this(in, DEFAULT);
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}
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/**
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* Parse an RFC 1779, 2253 or 4514 style AVA string: CN=fee fie foe fum
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* or perhaps with quotes. Additional keywords can be specified in the
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* keyword/OID map.
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*
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* This terminates at unescaped AVA separators ("+") or RDN
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* separators (",", ";"), and removes cosmetic whitespace at the end of
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* values.
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*/
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AVA(Reader in, Map<String, String> keywordMap) throws IOException {
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this(in, DEFAULT, keywordMap);
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}
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/**
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* Parse an AVA string formatted according to format.
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*/
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AVA(Reader in, int format) throws IOException {
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this(in, format, Collections.<String, String>emptyMap());
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}
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/**
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* Parse an AVA string formatted according to format.
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*
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* @param in Reader containing AVA String
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* @param format parsing format
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* @param keywordMap a Map where a keyword String maps to a corresponding
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* OID String. Each AVA keyword will be mapped to the corresponding OID.
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* If an entry does not exist, it will fallback to the builtin
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* keyword/OID mapping.
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* @throws IOException if the AVA String is not valid in the specified
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* format or an OID String from the keywordMap is improperly formatted
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*/
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AVA(Reader in, int format, Map<String, String> keywordMap)
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throws IOException {
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// assume format is one of DEFAULT or RFC2253
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StringBuilder temp = new StringBuilder();
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int c;
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/*
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* First get the keyword indicating the attribute's type,
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* and map it to the appropriate OID.
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*/
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while (true) {
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c = readChar(in, "Incorrect AVA format");
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if (c == '=') {
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break;
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}
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temp.append((char)c);
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}
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oid = AVAKeyword.getOID(temp.toString(), format, keywordMap);
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/*
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* Now parse the value. "#hex", a quoted string, or a string
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* terminated by "+", ",", ";". Whitespace before or after
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* the value is stripped away unless format is RFC2253.
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*/
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temp.setLength(0);
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if (format == RFC2253) {
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// read next character
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c = in.read();
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if (c == ' ') {
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throw new IOException("Incorrect AVA RFC2253 format - " +
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"leading space must be escaped");
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}
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} else {
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// read next character skipping whitespace
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do {
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c = in.read();
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} while ((c == ' ') || (c == '\n'));
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}
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if (c == -1) {
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// empty value
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value = new DerValue("");
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return;
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}
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if (c == '#') {
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value = parseHexString(in, format);
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} else if ((c == '"') && (format != RFC2253)) {
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value = parseQuotedString(in, temp);
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} else {
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value = parseString(in, c, format, temp);
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}
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}
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/**
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* Get the ObjectIdentifier of this AVA.
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*/
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public ObjectIdentifier getObjectIdentifier() {
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return oid;
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}
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/**
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* Get the value of this AVA as a DerValue.
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*/
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public DerValue getDerValue() {
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return value;
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}
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/**
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* Get the value of this AVA as a String.
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*
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* @exception RuntimeException if we could not obtain the string form
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* (should not occur)
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*/
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public String getValueString() {
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try {
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String s = value.getAsString();
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if (s == null) {
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throw new RuntimeException("AVA string is null");
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}
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return s;
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} catch (IOException e) {
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// should not occur
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throw new RuntimeException("AVA error: " + e, e);
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}
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}
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private static DerValue parseHexString
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(Reader in, int format) throws IOException {
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int c;
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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byte b = 0;
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int cNdx = 0;
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while (true) {
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c = in.read();
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if (isTerminator(c, format)) {
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break;
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}
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// BEGIN Android-added: AVA: Support DerValue hex strings that contain ' ' or '\n'
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if (c == ' ' || c == '\n') {
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do {
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if (c != ' ' && c != '\n') {
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throw new IOException("AVA parse, invalid hex " + "digit: "+ (char)c);
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}
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c = in.read();
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} while (!isTerminator(c, format));
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break;
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}
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// END Android-added: AVA: Support DerValue hex strings that contain ' ' or '\n'
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int cVal = hexDigits.indexOf(Character.toUpperCase((char)c));
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if (cVal == -1) {
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throw new IOException("AVA parse, invalid hex " +
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"digit: "+ (char)c);
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}
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if ((cNdx % 2) == 1) {
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b = (byte)((b * 16) + (byte)(cVal));
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baos.write(b);
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} else {
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b = (byte)(cVal);
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}
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cNdx++;
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}
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// throw exception if no hex digits
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if (cNdx == 0) {
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throw new IOException("AVA parse, zero hex digits");
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}
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// throw exception if odd number of hex digits
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if (cNdx % 2 == 1) {
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throw new IOException("AVA parse, odd number of hex digits");
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}
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return new DerValue(baos.toByteArray());
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}
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private DerValue parseQuotedString
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(Reader in, StringBuilder temp) throws IOException {
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// RFC1779 specifies that an entire RDN may be enclosed in double
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// quotes. In this case the syntax is any sequence of
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// backslash-specialChar, backslash-backslash,
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// backslash-doublequote, or character other than backslash or
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// doublequote.
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int c = readChar(in, "Quoted string did not end in quote");
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List<Byte> embeddedHex = new ArrayList<Byte>();
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boolean isPrintableString = true;
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while (c != '"') {
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if (c == '\\') {
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c = readChar(in, "Quoted string did not end in quote");
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// check for embedded hex pairs
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Byte hexByte = null;
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if ((hexByte = getEmbeddedHexPair(c, in)) != null) {
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// always encode AVAs with embedded hex as UTF8
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isPrintableString = false;
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// append consecutive embedded hex
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// as single string later
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embeddedHex.add(hexByte);
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c = in.read();
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continue;
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}
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if (specialChars1779.indexOf((char)c) < 0) {
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throw new IOException
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("Invalid escaped character in AVA: " +
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(char)c);
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}
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}
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// add embedded hex bytes before next char
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if (embeddedHex.size() > 0) {
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String hexString = getEmbeddedHexString(embeddedHex);
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temp.append(hexString);
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embeddedHex.clear();
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}
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// check for non-PrintableString chars
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isPrintableString &= DerValue.isPrintableStringChar((char)c);
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temp.append((char)c);
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c = readChar(in, "Quoted string did not end in quote");
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}
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// add trailing embedded hex bytes
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if (embeddedHex.size() > 0) {
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String hexString = getEmbeddedHexString(embeddedHex);
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temp.append(hexString);
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embeddedHex.clear();
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}
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do {
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c = in.read();
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} while ((c == '\n') || (c == ' '));
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if (c != -1) {
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throw new IOException("AVA had characters other than "
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+ "whitespace after terminating quote");
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}
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// encode as PrintableString unless value contains
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// non-PrintableString chars
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if (this.oid.equals((Object)PKCS9Attribute.EMAIL_ADDRESS_OID) ||
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(this.oid.equals((Object)X500Name.DOMAIN_COMPONENT_OID) &&
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PRESERVE_OLD_DC_ENCODING == false)) {
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// EmailAddress and DomainComponent must be IA5String
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return new DerValue(DerValue.tag_IA5String,
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// Android-changed: Do not trim() DerValue strings.
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// temp.toString().trim());
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temp.toString());
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} else if (isPrintableString) {
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// Android-changed: Do not trim() DerValue strings.
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//return new DerValue(temp.toString().trim());
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return new DerValue(temp.toString());
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} else {
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return new DerValue(DerValue.tag_UTF8String,
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// Android-changed: Do not trim() DerValue strings.
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// temp.toString().trim());
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temp.toString());
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}
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}
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private DerValue parseString
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(Reader in, int c, int format, StringBuilder temp) throws IOException {
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List<Byte> embeddedHex = new ArrayList<>();
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boolean isPrintableString = true;
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boolean escape = false;
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boolean leadingChar = true;
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int spaceCount = 0;
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do {
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escape = false;
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if (c == '\\') {
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escape = true;
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c = readChar(in, "Invalid trailing backslash");
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// check for embedded hex pairs
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Byte hexByte = null;
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if ((hexByte = getEmbeddedHexPair(c, in)) != null) {
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// always encode AVAs with embedded hex as UTF8
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isPrintableString = false;
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// append consecutive embedded hex
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// as single string later
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embeddedHex.add(hexByte);
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c = in.read();
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leadingChar = false;
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continue;
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}
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// check if character was improperly escaped
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if (format == DEFAULT &&
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specialCharsDefault.indexOf((char)c) == -1) {
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throw new IOException
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("Invalid escaped character in AVA: '" +
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(char)c + "'");
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} else if (format == RFC2253) {
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if (c == ' ') {
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// only leading/trailing space can be escaped
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if (!leadingChar && !trailingSpace(in)) {
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throw new IOException
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("Invalid escaped space character " +
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"in AVA. Only a leading or trailing " +
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"space character can be escaped.");
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}
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} else if (c == '#') {
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// only leading '#' can be escaped
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if (!leadingChar) {
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throw new IOException
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("Invalid escaped '#' character in AVA. " +
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"Only a leading '#' can be escaped.");
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}
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} else if (specialChars2253.indexOf((char)c) == -1) {
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throw new IOException
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("Invalid escaped character in AVA: '" +
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(char)c + "'");
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}
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}
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} else {
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// check if character should have been escaped
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if (format == RFC2253) {
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if (specialChars2253.indexOf((char)c) != -1) {
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throw new IOException
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("Character '" + (char)c +
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"' in AVA appears without escape");
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}
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}
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// BEGIN Android-removed
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// Added in jdk860. rev/d1c04dac850d
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// If present breaks X500PrincipalTest#testIllegalInputName_07
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// else if (escapedDefault.indexOf((char)c) != -1) {
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// throw new IOException
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// ("Character '" + (char)c +
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// "' in AVA appears without escape");
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// }
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}
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// add embedded hex bytes before next char
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if (embeddedHex.size() > 0) {
|
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// add space(s) before embedded hex bytes
|
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for (int i = 0; i < spaceCount; i++) {
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temp.append(" ");
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}
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spaceCount = 0;
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String hexString = getEmbeddedHexString(embeddedHex);
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temp.append(hexString);
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embeddedHex.clear();
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}
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// check for non-PrintableString chars
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isPrintableString &= DerValue.isPrintableStringChar((char)c);
|
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if (c == ' ' && escape == false) {
|
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// do not add non-escaped spaces yet
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// (non-escaped trailing spaces are ignored)
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spaceCount++;
|
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} else {
|
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// add space(s)
|
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for (int i = 0; i < spaceCount; i++) {
|
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temp.append(" ");
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}
|
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spaceCount = 0;
|
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temp.append((char)c);
|
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}
|
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c = in.read();
|
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leadingChar = false;
|
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} while (isTerminator(c, format) == false);
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|
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if (format == RFC2253 && spaceCount > 0) {
|
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throw new IOException("Incorrect AVA RFC2253 format - " +
|
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"trailing space must be escaped");
|
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}
|
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|
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// add trailing embedded hex bytes
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if (embeddedHex.size() > 0) {
|
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String hexString = getEmbeddedHexString(embeddedHex);
|
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temp.append(hexString);
|
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embeddedHex.clear();
|
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}
|
|
|
|
// encode as PrintableString unless value contains
|
|
// non-PrintableString chars
|
|
if (this.oid.equals((Object)PKCS9Attribute.EMAIL_ADDRESS_OID) ||
|
|
(this.oid.equals((Object)X500Name.DOMAIN_COMPONENT_OID) &&
|
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PRESERVE_OLD_DC_ENCODING == false)) {
|
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// EmailAddress and DomainComponent must be IA5String
|
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return new DerValue(DerValue.tag_IA5String, temp.toString());
|
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} else if (isPrintableString) {
|
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return new DerValue(temp.toString());
|
|
} else {
|
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return new DerValue(DerValue.tag_UTF8String, temp.toString());
|
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}
|
|
}
|
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|
|
private static Byte getEmbeddedHexPair(int c1, Reader in)
|
|
throws IOException {
|
|
|
|
if (hexDigits.indexOf(Character.toUpperCase((char)c1)) >= 0) {
|
|
int c2 = readChar(in, "unexpected EOF - " +
|
|
"escaped hex value must include two valid digits");
|
|
|
|
if (hexDigits.indexOf(Character.toUpperCase((char)c2)) >= 0) {
|
|
int hi = Character.digit((char)c1, 16);
|
|
int lo = Character.digit((char)c2, 16);
|
|
return new Byte((byte)((hi<<4) + lo));
|
|
} else {
|
|
throw new IOException
|
|
("escaped hex value must include two valid digits");
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
private static String getEmbeddedHexString(List<Byte> hexList)
|
|
throws IOException {
|
|
int n = hexList.size();
|
|
byte[] hexBytes = new byte[n];
|
|
for (int i = 0; i < n; i++) {
|
|
hexBytes[i] = hexList.get(i).byteValue();
|
|
}
|
|
return new String(hexBytes, "UTF8");
|
|
}
|
|
|
|
private static boolean isTerminator(int ch, int format) {
|
|
switch (ch) {
|
|
case -1:
|
|
case '+':
|
|
case ',':
|
|
return true;
|
|
case ';':
|
|
return format != RFC2253;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
private static int readChar(Reader in, String errMsg) throws IOException {
|
|
int c = in.read();
|
|
if (c == -1) {
|
|
throw new IOException(errMsg);
|
|
}
|
|
return c;
|
|
}
|
|
|
|
private static boolean trailingSpace(Reader in) throws IOException {
|
|
|
|
boolean trailing = false;
|
|
|
|
if (!in.markSupported()) {
|
|
// oh well
|
|
return true;
|
|
} else {
|
|
// make readAheadLimit huge -
|
|
// in practice, AVA was passed a StringReader from X500Name,
|
|
// and StringReader ignores readAheadLimit anyways
|
|
in.mark(9999);
|
|
while (true) {
|
|
int nextChar = in.read();
|
|
if (nextChar == -1) {
|
|
trailing = true;
|
|
break;
|
|
} else if (nextChar == ' ') {
|
|
continue;
|
|
} else if (nextChar == '\\') {
|
|
int followingChar = in.read();
|
|
if (followingChar != ' ') {
|
|
trailing = false;
|
|
break;
|
|
}
|
|
} else {
|
|
trailing = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
in.reset();
|
|
return trailing;
|
|
}
|
|
}
|
|
|
|
AVA(DerValue derval) throws IOException {
|
|
// Individual attribute value assertions are SEQUENCE of two values.
|
|
// That'd be a "struct" outside of ASN.1.
|
|
if (derval.tag != DerValue.tag_Sequence) {
|
|
throw new IOException("AVA not a sequence");
|
|
}
|
|
oid = X500Name.intern(derval.data.getOID());
|
|
value = derval.data.getDerValue();
|
|
|
|
if (derval.data.available() != 0) {
|
|
throw new IOException("AVA, extra bytes = "
|
|
+ derval.data.available());
|
|
}
|
|
}
|
|
|
|
AVA(DerInputStream in) throws IOException {
|
|
this(in.getDerValue());
|
|
}
|
|
|
|
public boolean equals(Object obj) {
|
|
if (this == obj) {
|
|
return true;
|
|
}
|
|
if (obj instanceof AVA == false) {
|
|
return false;
|
|
}
|
|
AVA other = (AVA)obj;
|
|
return this.toRFC2253CanonicalString().equals
|
|
(other.toRFC2253CanonicalString());
|
|
}
|
|
|
|
/**
|
|
* Returns a hashcode for this AVA.
|
|
*
|
|
* @return a hashcode for this AVA.
|
|
*/
|
|
public int hashCode() {
|
|
return toRFC2253CanonicalString().hashCode();
|
|
}
|
|
|
|
/*
|
|
* AVAs are encoded as a SEQUENCE of two elements.
|
|
*/
|
|
public void encode(DerOutputStream out) throws IOException {
|
|
derEncode(out);
|
|
}
|
|
|
|
/**
|
|
* DER encode this object onto an output stream.
|
|
* Implements the <code>DerEncoder</code> interface.
|
|
*
|
|
* @param out
|
|
* the output stream on which to write the DER encoding.
|
|
*
|
|
* @exception IOException on encoding error.
|
|
*/
|
|
public void derEncode(OutputStream out) throws IOException {
|
|
DerOutputStream tmp = new DerOutputStream();
|
|
DerOutputStream tmp2 = new DerOutputStream();
|
|
|
|
tmp.putOID(oid);
|
|
value.encode(tmp);
|
|
tmp2.write(DerValue.tag_Sequence, tmp);
|
|
out.write(tmp2.toByteArray());
|
|
}
|
|
|
|
private String toKeyword(int format, Map<String, String> oidMap) {
|
|
return AVAKeyword.getKeyword(oid, format, oidMap);
|
|
}
|
|
|
|
/**
|
|
* Returns a printable form of this attribute, using RFC 1779
|
|
* syntax for individual attribute/value assertions.
|
|
*/
|
|
public String toString() {
|
|
return toKeywordValueString
|
|
(toKeyword(DEFAULT, Collections.<String, String>emptyMap()));
|
|
}
|
|
|
|
/**
|
|
* Returns a printable form of this attribute, using RFC 1779
|
|
* syntax for individual attribute/value assertions. It only
|
|
* emits standardised keywords.
|
|
*/
|
|
public String toRFC1779String() {
|
|
return toRFC1779String(Collections.<String, String>emptyMap());
|
|
}
|
|
|
|
/**
|
|
* Returns a printable form of this attribute, using RFC 1779
|
|
* syntax for individual attribute/value assertions. It
|
|
* emits standardised keywords, as well as keywords contained in the
|
|
* OID/keyword map.
|
|
*/
|
|
public String toRFC1779String(Map<String, String> oidMap) {
|
|
return toKeywordValueString(toKeyword(RFC1779, oidMap));
|
|
}
|
|
|
|
/**
|
|
* Returns a printable form of this attribute, using RFC 2253
|
|
* syntax for individual attribute/value assertions. It only
|
|
* emits standardised keywords.
|
|
*/
|
|
public String toRFC2253String() {
|
|
return toRFC2253String(Collections.<String, String>emptyMap());
|
|
}
|
|
|
|
/**
|
|
* Returns a printable form of this attribute, using RFC 2253
|
|
* syntax for individual attribute/value assertions. It
|
|
* emits standardised keywords, as well as keywords contained in the
|
|
* OID/keyword map.
|
|
*/
|
|
public String toRFC2253String(Map<String, String> oidMap) {
|
|
/*
|
|
* Section 2.3: The AttributeTypeAndValue is encoded as the string
|
|
* representation of the AttributeType, followed by an equals character
|
|
* ('=' ASCII 61), followed by the string representation of the
|
|
* AttributeValue. The encoding of the AttributeValue is given in
|
|
* section 2.4.
|
|
*/
|
|
StringBuilder typeAndValue = new StringBuilder(100);
|
|
typeAndValue.append(toKeyword(RFC2253, oidMap));
|
|
typeAndValue.append('=');
|
|
|
|
/*
|
|
* Section 2.4: Converting an AttributeValue from ASN.1 to a String.
|
|
* If the AttributeValue is of a type which does not have a string
|
|
* representation defined for it, then it is simply encoded as an
|
|
* octothorpe character ('#' ASCII 35) followed by the hexadecimal
|
|
* representation of each of the bytes of the BER encoding of the X.500
|
|
* AttributeValue. This form SHOULD be used if the AttributeType is of
|
|
* the dotted-decimal form.
|
|
*/
|
|
if ((typeAndValue.charAt(0) >= '0' && typeAndValue.charAt(0) <= '9') ||
|
|
!isDerString(value, false))
|
|
{
|
|
byte[] data = null;
|
|
try {
|
|
data = value.toByteArray();
|
|
} catch (IOException ie) {
|
|
throw new IllegalArgumentException("DER Value conversion");
|
|
}
|
|
typeAndValue.append('#');
|
|
for (int j = 0; j < data.length; j++) {
|
|
byte b = data[j];
|
|
typeAndValue.append(Character.forDigit(0xF & (b >>> 4), 16));
|
|
typeAndValue.append(Character.forDigit(0xF & b, 16));
|
|
}
|
|
} else {
|
|
/*
|
|
* 2.4 (cont): Otherwise, if the AttributeValue is of a type which
|
|
* has a string representation, the value is converted first to a
|
|
* UTF-8 string according to its syntax specification.
|
|
*
|
|
* NOTE: this implementation only emits DirectoryStrings of the
|
|
* types returned by isDerString().
|
|
*/
|
|
String valStr = null;
|
|
try {
|
|
valStr = new String(value.getDataBytes(), "UTF8");
|
|
} catch (IOException ie) {
|
|
throw new IllegalArgumentException("DER Value conversion");
|
|
}
|
|
|
|
/*
|
|
* 2.4 (cont): If the UTF-8 string does not have any of the
|
|
* following characters which need escaping, then that string can be
|
|
* used as the string representation of the value.
|
|
*
|
|
* o a space or "#" character occurring at the beginning of the
|
|
* string
|
|
* o a space character occurring at the end of the string
|
|
* o one of the characters ",", "+", """, "\", "<", ">" or ";"
|
|
*
|
|
* Implementations MAY escape other characters.
|
|
*
|
|
* NOTE: this implementation also recognizes "=" and "#" as
|
|
* characters which need escaping, and null which is escaped as
|
|
* '\00' (see RFC 4514).
|
|
*
|
|
* If a character to be escaped is one of the list shown above, then
|
|
* it is prefixed by a backslash ('\' ASCII 92).
|
|
*
|
|
* Otherwise the character to be escaped is replaced by a backslash
|
|
* and two hex digits, which form a single byte in the code of the
|
|
* character.
|
|
*/
|
|
final String escapees = ",=+<>#;\"\\";
|
|
StringBuilder sbuffer = new StringBuilder();
|
|
|
|
for (int i = 0; i < valStr.length(); i++) {
|
|
char c = valStr.charAt(i);
|
|
if (DerValue.isPrintableStringChar(c) ||
|
|
escapees.indexOf(c) >= 0) {
|
|
|
|
// escape escapees
|
|
if (escapees.indexOf(c) >= 0) {
|
|
sbuffer.append('\\');
|
|
}
|
|
|
|
// append printable/escaped char
|
|
sbuffer.append(c);
|
|
|
|
} else if (c == '\u0000') {
|
|
// escape null character
|
|
sbuffer.append("\\00");
|
|
|
|
} else if (debug != null && Debug.isOn("ava")) {
|
|
|
|
// embed non-printable/non-escaped char
|
|
// as escaped hex pairs for debugging
|
|
byte[] valueBytes = null;
|
|
try {
|
|
valueBytes = Character.toString(c).getBytes("UTF8");
|
|
} catch (IOException ie) {
|
|
throw new IllegalArgumentException
|
|
("DER Value conversion");
|
|
}
|
|
for (int j = 0; j < valueBytes.length; j++) {
|
|
sbuffer.append('\\');
|
|
char hexChar = Character.forDigit
|
|
(0xF & (valueBytes[j] >>> 4), 16);
|
|
sbuffer.append(Character.toUpperCase(hexChar));
|
|
hexChar = Character.forDigit
|
|
(0xF & (valueBytes[j]), 16);
|
|
sbuffer.append(Character.toUpperCase(hexChar));
|
|
}
|
|
} else {
|
|
|
|
// append non-printable/non-escaped char
|
|
sbuffer.append(c);
|
|
}
|
|
}
|
|
|
|
char[] chars = sbuffer.toString().toCharArray();
|
|
sbuffer = new StringBuilder();
|
|
|
|
// Find leading and trailing whitespace.
|
|
int lead; // index of first char that is not leading whitespace
|
|
for (lead = 0; lead < chars.length; lead++) {
|
|
if (chars[lead] != ' ' && chars[lead] != '\r') {
|
|
break;
|
|
}
|
|
}
|
|
int trail; // index of last char that is not trailing whitespace
|
|
for (trail = chars.length - 1; trail >= 0; trail--) {
|
|
if (chars[trail] != ' ' && chars[trail] != '\r') {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// escape leading and trailing whitespace
|
|
for (int i = 0; i < chars.length; i++) {
|
|
char c = chars[i];
|
|
if (i < lead || i > trail) {
|
|
sbuffer.append('\\');
|
|
}
|
|
sbuffer.append(c);
|
|
}
|
|
typeAndValue.append(sbuffer.toString());
|
|
}
|
|
return typeAndValue.toString();
|
|
}
|
|
|
|
public String toRFC2253CanonicalString() {
|
|
/*
|
|
* Section 2.3: The AttributeTypeAndValue is encoded as the string
|
|
* representation of the AttributeType, followed by an equals character
|
|
* ('=' ASCII 61), followed by the string representation of the
|
|
* AttributeValue. The encoding of the AttributeValue is given in
|
|
* section 2.4.
|
|
*/
|
|
StringBuilder typeAndValue = new StringBuilder(40);
|
|
typeAndValue.append
|
|
(toKeyword(RFC2253, Collections.<String, String>emptyMap()));
|
|
typeAndValue.append('=');
|
|
|
|
/*
|
|
* Section 2.4: Converting an AttributeValue from ASN.1 to a String.
|
|
* If the AttributeValue is of a type which does not have a string
|
|
* representation defined for it, then it is simply encoded as an
|
|
* octothorpe character ('#' ASCII 35) followed by the hexadecimal
|
|
* representation of each of the bytes of the BER encoding of the X.500
|
|
* AttributeValue. This form SHOULD be used if the AttributeType is of
|
|
* the dotted-decimal form.
|
|
*/
|
|
if ((typeAndValue.charAt(0) >= '0' && typeAndValue.charAt(0) <= '9') ||
|
|
// Android-changed: AVA: Support DerValue hex strings that contain ' ' or '\n'
|
|
//!isDerString(value, true))
|
|
(!isDerString(value, true) && value.tag != DerValue.tag_T61String))
|
|
{
|
|
byte[] data = null;
|
|
try {
|
|
data = value.toByteArray();
|
|
} catch (IOException ie) {
|
|
throw new IllegalArgumentException("DER Value conversion");
|
|
}
|
|
typeAndValue.append('#');
|
|
for (int j = 0; j < data.length; j++) {
|
|
byte b = data[j];
|
|
typeAndValue.append(Character.forDigit(0xF & (b >>> 4), 16));
|
|
typeAndValue.append(Character.forDigit(0xF & b, 16));
|
|
}
|
|
} else {
|
|
/*
|
|
* 2.4 (cont): Otherwise, if the AttributeValue is of a type which
|
|
* has a string representation, the value is converted first to a
|
|
* UTF-8 string according to its syntax specification.
|
|
*
|
|
* NOTE: this implementation only emits DirectoryStrings of the
|
|
* types returned by isDerString().
|
|
*/
|
|
String valStr = null;
|
|
try {
|
|
valStr = new String(value.getDataBytes(), "UTF8");
|
|
} catch (IOException ie) {
|
|
throw new IllegalArgumentException("DER Value conversion");
|
|
}
|
|
|
|
/*
|
|
* 2.4 (cont): If the UTF-8 string does not have any of the
|
|
* following characters which need escaping, then that string can be
|
|
* used as the string representation of the value.
|
|
*
|
|
* o a space or "#" character occurring at the beginning of the
|
|
* string
|
|
* o a space character occurring at the end of the string
|
|
*
|
|
* o one of the characters ",", "+", """, "\", "<", ">" or ";"
|
|
*
|
|
* If a character to be escaped is one of the list shown above, then
|
|
* it is prefixed by a backslash ('\' ASCII 92).
|
|
*
|
|
* Otherwise the character to be escaped is replaced by a backslash
|
|
* and two hex digits, which form a single byte in the code of the
|
|
* character.
|
|
*/
|
|
final String escapees = ",+<>;\"\\";
|
|
StringBuilder sbuffer = new StringBuilder();
|
|
boolean previousWhite = false;
|
|
|
|
for (int i = 0; i < valStr.length(); i++) {
|
|
char c = valStr.charAt(i);
|
|
|
|
if (DerValue.isPrintableStringChar(c) ||
|
|
escapees.indexOf(c) >= 0 ||
|
|
(i == 0 && c == '#')) {
|
|
|
|
// escape leading '#' and escapees
|
|
if ((i == 0 && c == '#') || escapees.indexOf(c) >= 0) {
|
|
sbuffer.append('\\');
|
|
}
|
|
|
|
// convert multiple whitespace to single whitespace
|
|
if (!Character.isWhitespace(c)) {
|
|
previousWhite = false;
|
|
sbuffer.append(c);
|
|
} else {
|
|
if (previousWhite == false) {
|
|
// add single whitespace
|
|
previousWhite = true;
|
|
sbuffer.append(c);
|
|
} else {
|
|
// ignore subsequent consecutive whitespace
|
|
continue;
|
|
}
|
|
}
|
|
|
|
} else if (debug != null && Debug.isOn("ava")) {
|
|
|
|
// embed non-printable/non-escaped char
|
|
// as escaped hex pairs for debugging
|
|
|
|
previousWhite = false;
|
|
|
|
byte valueBytes[] = null;
|
|
try {
|
|
valueBytes = Character.toString(c).getBytes("UTF8");
|
|
} catch (IOException ie) {
|
|
throw new IllegalArgumentException
|
|
("DER Value conversion");
|
|
}
|
|
for (int j = 0; j < valueBytes.length; j++) {
|
|
sbuffer.append('\\');
|
|
sbuffer.append(Character.forDigit
|
|
(0xF & (valueBytes[j] >>> 4), 16));
|
|
sbuffer.append(Character.forDigit
|
|
(0xF & (valueBytes[j]), 16));
|
|
}
|
|
} else {
|
|
|
|
// append non-printable/non-escaped char
|
|
|
|
previousWhite = false;
|
|
sbuffer.append(c);
|
|
}
|
|
}
|
|
|
|
// remove leading and trailing whitespace from value
|
|
typeAndValue.append(sbuffer.toString().trim());
|
|
}
|
|
|
|
String canon = typeAndValue.toString();
|
|
canon = canon.toUpperCase(Locale.US).toLowerCase(Locale.US);
|
|
return Normalizer.normalize(canon, Normalizer.Form.NFKD);
|
|
}
|
|
|
|
/*
|
|
* Return true if DerValue can be represented as a String.
|
|
*/
|
|
private static boolean isDerString(DerValue value, boolean canonical) {
|
|
if (canonical) {
|
|
switch (value.tag) {
|
|
case DerValue.tag_PrintableString:
|
|
case DerValue.tag_UTF8String:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
} else {
|
|
switch (value.tag) {
|
|
case DerValue.tag_PrintableString:
|
|
case DerValue.tag_T61String:
|
|
case DerValue.tag_IA5String:
|
|
case DerValue.tag_GeneralString:
|
|
case DerValue.tag_BMPString:
|
|
case DerValue.tag_UTF8String:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
boolean hasRFC2253Keyword() {
|
|
return AVAKeyword.hasKeyword(oid, RFC2253);
|
|
}
|
|
|
|
private String toKeywordValueString(String keyword) {
|
|
/*
|
|
* Construct the value with as little copying and garbage
|
|
* production as practical. First the keyword (mandatory),
|
|
* then the equals sign, finally the value.
|
|
*/
|
|
StringBuilder retval = new StringBuilder(40);
|
|
|
|
retval.append(keyword);
|
|
retval.append("=");
|
|
|
|
try {
|
|
String valStr = value.getAsString();
|
|
|
|
if (valStr == null) {
|
|
|
|
// rfc1779 specifies that attribute values associated
|
|
// with non-standard keyword attributes may be represented
|
|
// using the hex format below. This will be used only
|
|
// when the value is not a string type
|
|
|
|
byte data [] = value.toByteArray();
|
|
|
|
retval.append('#');
|
|
for (int i = 0; i < data.length; i++) {
|
|
retval.append(hexDigits.charAt((data [i] >> 4) & 0x0f));
|
|
retval.append(hexDigits.charAt(data [i] & 0x0f));
|
|
}
|
|
|
|
} else {
|
|
|
|
boolean quoteNeeded = false;
|
|
StringBuilder sbuffer = new StringBuilder();
|
|
boolean previousWhite = false;
|
|
final String escapees = ",+=\n<>#;\\\"";
|
|
|
|
/*
|
|
* Special characters (e.g. AVA list separators) cause strings
|
|
* to need quoting, or at least escaping. So do leading or
|
|
* trailing spaces, and multiple internal spaces.
|
|
*/
|
|
int length = valStr.length();
|
|
boolean alreadyQuoted =
|
|
(length > 1 && valStr.charAt(0) == '\"'
|
|
&& valStr.charAt(length - 1) == '\"');
|
|
|
|
for (int i = 0; i < length; i++) {
|
|
char c = valStr.charAt(i);
|
|
if (alreadyQuoted && (i == 0 || i == length - 1)) {
|
|
sbuffer.append(c);
|
|
continue;
|
|
}
|
|
if (DerValue.isPrintableStringChar(c) ||
|
|
escapees.indexOf(c) >= 0) {
|
|
|
|
// quote if leading whitespace or special chars
|
|
if (!quoteNeeded &&
|
|
((i == 0 && (c == ' ' || c == '\n')) ||
|
|
escapees.indexOf(c) >= 0)) {
|
|
quoteNeeded = true;
|
|
}
|
|
|
|
// quote if multiple internal whitespace
|
|
if (!(c == ' ' || c == '\n')) {
|
|
// escape '"' and '\'
|
|
if (c == '"' || c == '\\') {
|
|
sbuffer.append('\\');
|
|
}
|
|
previousWhite = false;
|
|
} else {
|
|
if (!quoteNeeded && previousWhite) {
|
|
quoteNeeded = true;
|
|
}
|
|
previousWhite = true;
|
|
}
|
|
|
|
sbuffer.append(c);
|
|
|
|
} else if (debug != null && Debug.isOn("ava")) {
|
|
|
|
// embed non-printable/non-escaped char
|
|
// as escaped hex pairs for debugging
|
|
|
|
previousWhite = false;
|
|
|
|
// embed escaped hex pairs
|
|
byte[] valueBytes =
|
|
Character.toString(c).getBytes("UTF8");
|
|
for (int j = 0; j < valueBytes.length; j++) {
|
|
sbuffer.append('\\');
|
|
char hexChar = Character.forDigit
|
|
(0xF & (valueBytes[j] >>> 4), 16);
|
|
sbuffer.append(Character.toUpperCase(hexChar));
|
|
hexChar = Character.forDigit
|
|
(0xF & (valueBytes[j]), 16);
|
|
sbuffer.append(Character.toUpperCase(hexChar));
|
|
}
|
|
} else {
|
|
|
|
// append non-printable/non-escaped char
|
|
|
|
previousWhite = false;
|
|
sbuffer.append(c);
|
|
}
|
|
}
|
|
|
|
// quote if trailing whitespace
|
|
if (sbuffer.length() > 0) {
|
|
char trailChar = sbuffer.charAt(sbuffer.length() - 1);
|
|
if (trailChar == ' ' || trailChar == '\n') {
|
|
quoteNeeded = true;
|
|
}
|
|
}
|
|
|
|
// Emit the string ... quote it if needed
|
|
// if string is already quoted, don't re-quote
|
|
if (!alreadyQuoted && quoteNeeded) {
|
|
retval.append("\"" + sbuffer.toString() + "\"");
|
|
} else {
|
|
retval.append(sbuffer.toString());
|
|
}
|
|
}
|
|
} catch (IOException e) {
|
|
throw new IllegalArgumentException("DER Value conversion");
|
|
}
|
|
|
|
return retval.toString();
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Helper class that allows conversion from String to ObjectIdentifier and
|
|
* vice versa according to RFC1779, RFC2253, and an augmented version of
|
|
* those standards.
|
|
*/
|
|
class AVAKeyword {
|
|
|
|
private static final Map<ObjectIdentifier,AVAKeyword> oidMap;
|
|
private static final Map<String,AVAKeyword> keywordMap;
|
|
|
|
private String keyword;
|
|
private ObjectIdentifier oid;
|
|
private boolean rfc1779Compliant, rfc2253Compliant;
|
|
|
|
private AVAKeyword(String keyword, ObjectIdentifier oid,
|
|
boolean rfc1779Compliant, boolean rfc2253Compliant) {
|
|
this.keyword = keyword;
|
|
this.oid = oid;
|
|
this.rfc1779Compliant = rfc1779Compliant;
|
|
this.rfc2253Compliant = rfc2253Compliant;
|
|
|
|
// register it
|
|
oidMap.put(oid, this);
|
|
keywordMap.put(keyword, this);
|
|
}
|
|
|
|
private boolean isCompliant(int standard) {
|
|
switch (standard) {
|
|
case AVA.RFC1779:
|
|
return rfc1779Compliant;
|
|
case AVA.RFC2253:
|
|
return rfc2253Compliant;
|
|
case AVA.DEFAULT:
|
|
return true;
|
|
default:
|
|
// should not occur, internal error
|
|
throw new IllegalArgumentException("Invalid standard " + standard);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get an object identifier representing the specified keyword (or
|
|
* string encoded object identifier) in the given standard.
|
|
*
|
|
* @param keywordMap a Map where a keyword String maps to a corresponding
|
|
* OID String. Each AVA keyword will be mapped to the corresponding OID.
|
|
* If an entry does not exist, it will fallback to the builtin
|
|
* keyword/OID mapping.
|
|
* @throws IOException If the keyword is not valid in the specified standard
|
|
* or the OID String to which a keyword maps to is improperly formatted.
|
|
*/
|
|
static ObjectIdentifier getOID
|
|
(String keyword, int standard, Map<String, String> extraKeywordMap)
|
|
throws IOException {
|
|
|
|
keyword = keyword.toUpperCase(Locale.ENGLISH);
|
|
if (standard == AVA.RFC2253) {
|
|
if (keyword.startsWith(" ") || keyword.endsWith(" ")) {
|
|
throw new IOException("Invalid leading or trailing space " +
|
|
"in keyword \"" + keyword + "\"");
|
|
}
|
|
} else {
|
|
keyword = keyword.trim();
|
|
}
|
|
|
|
// check user-specified keyword map first, then fallback to built-in
|
|
// map
|
|
String oidString = extraKeywordMap.get(keyword);
|
|
if (oidString == null) {
|
|
AVAKeyword ak = keywordMap.get(keyword);
|
|
if ((ak != null) && ak.isCompliant(standard)) {
|
|
return ak.oid;
|
|
}
|
|
} else {
|
|
return new ObjectIdentifier(oidString);
|
|
}
|
|
|
|
// no keyword found, check if OID string
|
|
if (standard == AVA.DEFAULT && keyword.startsWith("OID.")) {
|
|
keyword = keyword.substring(4);
|
|
}
|
|
|
|
boolean number = false;
|
|
if (keyword.length() != 0) {
|
|
char ch = keyword.charAt(0);
|
|
if ((ch >= '0') && (ch <= '9')) {
|
|
number = true;
|
|
}
|
|
}
|
|
if (number == false) {
|
|
throw new IOException("Invalid keyword \"" + keyword + "\"");
|
|
}
|
|
return new ObjectIdentifier(keyword);
|
|
}
|
|
|
|
/**
|
|
* Get a keyword for the given ObjectIdentifier according to standard.
|
|
* If no keyword is available, the ObjectIdentifier is encoded as a
|
|
* String.
|
|
*/
|
|
static String getKeyword(ObjectIdentifier oid, int standard) {
|
|
return getKeyword
|
|
(oid, standard, Collections.<String, String>emptyMap());
|
|
}
|
|
|
|
/**
|
|
* Get a keyword for the given ObjectIdentifier according to standard.
|
|
* Checks the extraOidMap for a keyword first, then falls back to the
|
|
* builtin/default set. If no keyword is available, the ObjectIdentifier
|
|
* is encoded as a String.
|
|
*/
|
|
static String getKeyword
|
|
(ObjectIdentifier oid, int standard, Map<String, String> extraOidMap) {
|
|
|
|
// check extraOidMap first, then fallback to built-in map
|
|
String oidString = oid.toString();
|
|
String keywordString = extraOidMap.get(oidString);
|
|
if (keywordString == null) {
|
|
AVAKeyword ak = oidMap.get(oid);
|
|
if ((ak != null) && ak.isCompliant(standard)) {
|
|
return ak.keyword;
|
|
}
|
|
} else {
|
|
if (keywordString.length() == 0) {
|
|
throw new IllegalArgumentException("keyword cannot be empty");
|
|
}
|
|
keywordString = keywordString.trim();
|
|
char c = keywordString.charAt(0);
|
|
if (c < 65 || c > 122 || (c > 90 && c < 97)) {
|
|
throw new IllegalArgumentException
|
|
("keyword does not start with letter");
|
|
}
|
|
for (int i=1; i<keywordString.length(); i++) {
|
|
c = keywordString.charAt(i);
|
|
if ((c < 65 || c > 122 || (c > 90 && c < 97)) &&
|
|
(c < 48 || c > 57) && c != '_') {
|
|
throw new IllegalArgumentException
|
|
("keyword character is not a letter, digit, or underscore");
|
|
}
|
|
}
|
|
return keywordString;
|
|
}
|
|
// no compliant keyword, use OID
|
|
if (standard == AVA.RFC2253) {
|
|
return oidString;
|
|
} else {
|
|
return "OID." + oidString;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Test if oid has an associated keyword in standard.
|
|
*/
|
|
static boolean hasKeyword(ObjectIdentifier oid, int standard) {
|
|
AVAKeyword ak = oidMap.get(oid);
|
|
if (ak == null) {
|
|
return false;
|
|
}
|
|
return ak.isCompliant(standard);
|
|
}
|
|
|
|
static {
|
|
oidMap = new HashMap<ObjectIdentifier,AVAKeyword>();
|
|
keywordMap = new HashMap<String,AVAKeyword>();
|
|
|
|
// NOTE if multiple keywords are available for one OID, order
|
|
// is significant!! Preferred *LAST*.
|
|
new AVAKeyword("CN", X500Name.commonName_oid, true, true);
|
|
new AVAKeyword("C", X500Name.countryName_oid, true, true);
|
|
new AVAKeyword("L", X500Name.localityName_oid, true, true);
|
|
new AVAKeyword("S", X500Name.stateName_oid, false, false);
|
|
new AVAKeyword("ST", X500Name.stateName_oid, true, true);
|
|
new AVAKeyword("O", X500Name.orgName_oid, true, true);
|
|
new AVAKeyword("OU", X500Name.orgUnitName_oid, true, true);
|
|
new AVAKeyword("T", X500Name.title_oid, false, false);
|
|
new AVAKeyword("IP", X500Name.ipAddress_oid, false, false);
|
|
new AVAKeyword("STREET", X500Name.streetAddress_oid,true, true);
|
|
new AVAKeyword("DC", X500Name.DOMAIN_COMPONENT_OID,
|
|
false, true);
|
|
new AVAKeyword("DNQUALIFIER", X500Name.DNQUALIFIER_OID, false, false);
|
|
new AVAKeyword("DNQ", X500Name.DNQUALIFIER_OID, false, false);
|
|
new AVAKeyword("SURNAME", X500Name.SURNAME_OID, false, false);
|
|
new AVAKeyword("GIVENNAME", X500Name.GIVENNAME_OID, false, false);
|
|
new AVAKeyword("INITIALS", X500Name.INITIALS_OID, false, false);
|
|
new AVAKeyword("GENERATION", X500Name.GENERATIONQUALIFIER_OID,
|
|
false, false);
|
|
new AVAKeyword("EMAIL", PKCS9Attribute.EMAIL_ADDRESS_OID, false, false);
|
|
new AVAKeyword("EMAILADDRESS", PKCS9Attribute.EMAIL_ADDRESS_OID,
|
|
false, false);
|
|
new AVAKeyword("UID", X500Name.userid_oid, false, true);
|
|
new AVAKeyword("SERIALNUMBER", X500Name.SERIALNUMBER_OID, false, false);
|
|
}
|
|
}
|