1 /*
2 * Copyright (c) 2005, 2015, 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.net.idn.StringPrep;
36 import sun.text.normalizer.UCharacterIterator;
37
38 /**
39 * @author ram
40 *
41 * This is a dumb implementation of NFS4 profiles. It is a direct port of
42 * C code, does not use Object Oriented principles. Quick and Dirty implementation
43 * for testing.
44 */
45 public final class NFS4StringPrep {
46
47 private StringPrep nfscss = null;
48 private StringPrep nfscsi = null;
49 private StringPrep nfscis = null;
50 private StringPrep nfsmxp = null;
51 private StringPrep nfsmxs = null;
52 //singleton instance
53 private static final NFS4StringPrep prep = new NFS4StringPrep();
54
55
56 private NFS4StringPrep (){
57 ClassLoader loader = NFS4StringPrep.class.getClassLoader();
58 try{
59 InputStream nfscsiFile = loader.getResourceAsStream("nfscsi.spp");
60 nfscsi = new StringPrep(nfscsiFile);
61 nfscsiFile.close();
62
63 InputStream nfscssFile = loader.getResourceAsStream("nfscss.spp");
64 nfscss = new StringPrep(nfscssFile);
65 nfscssFile.close();
66
67 InputStream nfscisFile = loader.getResourceAsStream("nfscis.spp");
68 nfscis = new StringPrep(nfscisFile);
69 nfscisFile.close();
70
71 InputStream nfsmxpFile = loader.getResourceAsStream("nfsmxp.spp");
72 nfsmxp = new StringPrep(nfsmxpFile);
73 nfsmxpFile.close();
74
75 InputStream nfsmxsFile = loader.getResourceAsStream("nfsmxs.spp");
76 nfsmxs = new StringPrep(nfsmxsFile);
77 nfsmxsFile.close();
78 }catch(IOException e){
79 throw new RuntimeException(e.toString());
80 }
81 }
82
83 private static byte[] prepare(byte[] src, StringPrep prep)
84 throws ParseException, UnsupportedEncodingException{
85 String s = new String(src, "UTF-8");
86 UCharacterIterator iter = UCharacterIterator.getInstance(s);
87 StringBuffer out = prep.prepare(iter,StringPrep.DEFAULT);
88 return out.toString().getBytes("UTF-8");
89 }
90
91 public static byte[] cs_prepare(byte[] src, boolean isCaseSensitive)
92 throws ParseException, UnsupportedEncodingException{
93 if(isCaseSensitive == true ){
94 return prepare(src, prep.nfscss);
95 }else{
96 return prepare(src, prep.nfscsi);
97 }
98 }
99
100 public static byte[] cis_prepare(byte[] src)
101 throws IOException, ParseException, UnsupportedEncodingException{
102 return prepare(src, prep.nfscis);
103 }
104
105 /* sorted array for binary search*/
106 private static final String[] special_prefixes={
107 "ANONYMOUS",
108 "AUTHENTICATED",
109 "BATCH",
110 "DIALUP",
111 "EVERYONE",
112 "GROUP",
113 "INTERACTIVE",
114 "NETWORK",
115 "OWNER",
116 };
117
118
119 /* binary search the sorted array */
120 private static final int findStringIndex(String[] sortedArr,String target){
121
122 int left, middle, right,rc;
123
124 left =0;
125 right= sortedArr.length-1;
126
127 while(left <= right){
128 middle = (left+right)/2;
129 rc= sortedArr[middle].compareTo(target);
130
131 if(rc<0){
132 left = middle+1;
133 }else if(rc >0){
134 right = middle -1;
135 }else{
136 return middle;
137 }
138 }
139 return -1;
140 }
141 private static final char AT_SIGN = '@';
142
143 public static byte[] mixed_prepare(byte[] src)
144 throws IOException, ParseException, UnsupportedEncodingException{
145 String s = new String(src, "UTF-8");
146 int index = s.indexOf(AT_SIGN);
147 StringBuffer out = new StringBuffer();
148
149 if(index > -1){
150 /* special prefixes must not be followed by suffixes! */
151 String prefixString = s.substring(0,index);
152 int i= findStringIndex(special_prefixes, prefixString);
153 String suffixString = s.substring(index+1, s.length());
154 if(i>-1 && !suffixString.equals("")){
155 throw new ParseException("Suffix following a special index", -1);
156 }
157 UCharacterIterator prefix = UCharacterIterator.getInstance(prefixString);
158 UCharacterIterator suffix = UCharacterIterator.getInstance(suffixString);
159 out.append(prep.nfsmxp.prepare(prefix,StringPrep.DEFAULT));
160 out.append(AT_SIGN); // add the delimiter
161 out.append(prep.nfsmxs.prepare(suffix, StringPrep.DEFAULT));
162 }else{
163 UCharacterIterator iter = UCharacterIterator.getInstance(s);
164 out.append(prep.nfsmxp.prepare(iter,StringPrep.DEFAULT));
165
166 }
167 return out.toString().getBytes("UTF-8");
168 }
169
170 }