1 /*
2 * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 *******************************************************************************
26 * Copyright (C) 2003-2004, International Business Machines Corporation and *
27 * others. All Rights Reserved. *
28 *******************************************************************************
29 */
30 import java.io.IOException;
31 import java.io.InputStream;
32 import java.io.UnsupportedEncodingException;
33 import java.text.ParseException;
34
35 import sun.text.normalizer.ICUData;
36 import sun.net.idn.StringPrep;
37 import sun.text.normalizer.UCharacterIterator;
38
39 /**
40 * @author ram
41 *
42 * This is a dumb implementation of NFS4 profiles. It is a direct port of
43 * C code, does not use Object Oriented principles. Quick and Dirty implementation
44 * for testing.
45 */
46 public final class NFS4StringPrep {
47
48 private StringPrep nfscss = null;
49 private StringPrep nfscsi = null;
50 private StringPrep nfscis = null;
51 private StringPrep nfsmxp = null;
52 private StringPrep nfsmxs = null;
53 //singleton instance
54 private static final NFS4StringPrep prep = new NFS4StringPrep();
55
56
57 private NFS4StringPrep (){
58 ClassLoader loader = NFS4StringPrep.class.getClassLoader();
59 try{
60 InputStream nfscsiFile = loader.getResourceAsStream("nfscsi.spp");
61 nfscsi = new StringPrep(nfscsiFile);
62 nfscsiFile.close();
63
64 InputStream nfscssFile = loader.getResourceAsStream("nfscss.spp");
65 nfscss = new StringPrep(nfscssFile);
66 nfscssFile.close();
67
68 InputStream nfscisFile = loader.getResourceAsStream("nfscis.spp");
69 nfscis = new StringPrep(nfscisFile);
70 nfscisFile.close();
71
72 InputStream nfsmxpFile = loader.getResourceAsStream("nfsmxp.spp");
73 nfsmxp = new StringPrep(nfsmxpFile);
74 nfsmxpFile.close();
75
76 InputStream nfsmxsFile = loader.getResourceAsStream("nfsmxs.spp");
77 nfsmxs = new StringPrep(nfsmxsFile);
78 nfsmxsFile.close();
79 }catch(IOException e){
80 throw new RuntimeException(e.toString());
81 }
82 }
83
84 private static byte[] prepare(byte[] src, StringPrep prep)
85 throws ParseException, UnsupportedEncodingException{
86 String s = new String(src, "UTF-8");
87 UCharacterIterator iter = UCharacterIterator.getInstance(s);
88 StringBuffer out = prep.prepare(iter,StringPrep.DEFAULT);
89 return out.toString().getBytes("UTF-8");
90 }
91
92 public static byte[] cs_prepare(byte[] src, boolean isCaseSensitive)
93 throws ParseException, UnsupportedEncodingException{
94 if(isCaseSensitive == true ){
95 return prepare(src, prep.nfscss);
96 }else{
97 return prepare(src, prep.nfscsi);
98 }
99 }
100
101 public static byte[] cis_prepare(byte[] src)
102 throws IOException, ParseException, UnsupportedEncodingException{
103 return prepare(src, prep.nfscis);
104 }
105
106 /* sorted array for binary search*/
107 private static final String[] special_prefixes={
108 "ANONYMOUS",
109 "AUTHENTICATED",
110 "BATCH",
111 "DIALUP",
112 "EVERYONE",
113 "GROUP",
114 "INTERACTIVE",
115 "NETWORK",
116 "OWNER",
117 };
118
119
120 /* binary search the sorted array */
121 private static final int findStringIndex(String[] sortedArr,String target){
122
123 int left, middle, right,rc;
124
125 left =0;
126 right= sortedArr.length-1;
127
128 while(left <= right){
129 middle = (left+right)/2;
130 rc= sortedArr[middle].compareTo(target);
131
132 if(rc<0){
133 left = middle+1;
134 }else if(rc >0){
135 right = middle -1;
136 }else{
137 return middle;
138 }
139 }
140 return -1;
141 }
142 private static final char AT_SIGN = '@';
143
144 public static byte[] mixed_prepare(byte[] src)
145 throws IOException, ParseException, UnsupportedEncodingException{
146 String s = new String(src, "UTF-8");
147 int index = s.indexOf(AT_SIGN);
148 StringBuffer out = new StringBuffer();
149
150 if(index > -1){
151 /* special prefixes must not be followed by suffixes! */
152 String prefixString = s.substring(0,index);
153 int i= findStringIndex(special_prefixes, prefixString);
154 String suffixString = s.substring(index+1, s.length());
155 if(i>-1 && !suffixString.equals("")){
156 throw new ParseException("Suffix following a special index", -1);
157 }
158 UCharacterIterator prefix = UCharacterIterator.getInstance(prefixString);
159 UCharacterIterator suffix = UCharacterIterator.getInstance(suffixString);
160 out.append(prep.nfsmxp.prepare(prefix,StringPrep.DEFAULT));
161 out.append(AT_SIGN); // add the delimiter
162 out.append(prep.nfsmxs.prepare(suffix, StringPrep.DEFAULT));
163 }else{
164 UCharacterIterator iter = UCharacterIterator.getInstance(s);
165 out.append(prep.nfsmxp.prepare(iter,StringPrep.DEFAULT));
166
167 }
168 return out.toString().getBytes("UTF-8");
169 }
170
171 }