|
1
19
20 package com.maverick.crypto.asn1;
21
22 import java.util.Enumeration  ;
23
24 import com.maverick.crypto.encoders.Hex;
25
26 public class ASN1Dump
27 {
28 private static String TAB = " ";
29
30
35 public static String _dumpAsString(
36 String indent,
37 DERObject obj)
38 {
39 if (obj instanceof ASN1Sequence)
40 {
41 StringBuffer buf = new StringBuffer ();
42 Enumeration e = ((ASN1Sequence)obj).getObjects();
43 String tab = indent + TAB;
44
45 buf.append(indent);
46 if (obj instanceof BERConstructedSequence)
47 {
48 buf.append("BER ConstructedSequence");
49 }
50 else if (obj instanceof DERConstructedSequence)
51 {
52 buf.append("DER ConstructedSequence");
53 }
54 else if (obj instanceof DERSequence)
55 {
56 buf.append("DER Sequence");
57 }
58 else if (obj instanceof BERSequence)
59 {
60 buf.append("BER Sequence");
61 }
62 else
63 {
64 buf.append("Sequence");
65 }
66
67 buf.append(System.getProperty("line.separator"));
68
69 while (e.hasMoreElements())
70 {
71 Object o = e.nextElement();
72
73 if (o == null || o.equals(new DERNull()))
74 {
75 buf.append(tab);
76 buf.append("NULL");
77 buf.append(System.getProperty("line.separator"));
78 }
79 else if (o instanceof DERObject)
80 {
81 buf.append(_dumpAsString(tab, (DERObject)o));
82 }
83 else
84 {
85 buf.append(_dumpAsString(tab, ((DEREncodable)o).getDERObject()));
86 }
87 }
88 return buf.toString();
89 }
90 else if (obj instanceof DERTaggedObject)
91 {
92 StringBuffer buf = new StringBuffer ();
93 String tab = indent + TAB;
94
95 buf.append(indent);
96 if (obj instanceof BERTaggedObject)
97 {
98 buf.append("BER Tagged [");
99 }
100 else
101 {
102 buf.append("Tagged [");
103 }
104
105 DERTaggedObject o = (DERTaggedObject)obj;
106
107 buf.append(Integer.toString(o.getTagNo()));
108 buf.append("]");
109
110 if (!o.isExplicit())
111 {
112 buf.append(" IMPLICIT ");
113 }
114
115 buf.append(System.getProperty("line.separator"));
116
117 if (o.isEmpty())
118 {
119 buf.append(tab);
120 buf.append("EMPTY");
121 buf.append(System.getProperty("line.separator"));
122 }
123 else
124 {
125 buf.append(_dumpAsString(tab, o.getObject()));
126 }
127
128 return buf.toString();
129 }
130 else if (obj instanceof DERConstructedSet)
131 {
132 StringBuffer buf = new StringBuffer ();
133 Enumeration e = ((ASN1Set)obj).getObjects();
134 String tab = indent + TAB;
135
136 buf.append(indent);
137 buf.append("ConstructedSet");
138 buf.append(System.getProperty("line.separator"));
139
140 while (e.hasMoreElements())
141 {
142 Object o = e.nextElement();
143
144 if (o == null)
145 {
146 buf.append(tab);
147 buf.append("NULL");
148 buf.append(System.getProperty("line.separator"));
149 }
150 else if (o instanceof DERObject)
151 {
152 buf.append(_dumpAsString(tab, (DERObject)o));
153 }
154 else
155 {
156 buf.append(_dumpAsString(tab, ((DEREncodable)o).getDERObject()));
157 }
158 }
159 return buf.toString();
160 }
161 else if (obj instanceof BERSet)
162 {
163 StringBuffer buf = new StringBuffer ();
164 Enumeration e = ((ASN1Set)obj).getObjects();
165 String tab = indent + TAB;
166
167 buf.append(indent);
168 buf.append("BER Set");
169 buf.append(System.getProperty("line.separator"));
170
171 while (e.hasMoreElements())
172 {
173 Object o = e.nextElement();
174
175 if (o == null)
176 {
177 buf.append(tab);
178 buf.append("NULL");
179 buf.append(System.getProperty("line.separator"));
180 }
181 else if (o instanceof DERObject)
182 {
183 buf.append(_dumpAsString(tab, (DERObject)o));
184 }
185 else
186 {
187 buf.append(_dumpAsString(tab, ((DEREncodable)o).getDERObject()));
188 }
189 }
190 return buf.toString();
191 }
192 else if (obj instanceof DERSet)
193 {
194 StringBuffer buf = new StringBuffer ();
195 Enumeration e = ((ASN1Set)obj).getObjects();
196 String tab = indent + TAB;
197
198 buf.append(indent);
199 buf.append("DER Set");
200 buf.append(System.getProperty("line.separator"));
201
202 while (e.hasMoreElements())
203 {
204 Object o = e.nextElement();
205
206 if (o == null)
207 {
208 buf.append(tab);
209 buf.append("NULL");
210 buf.append(System.getProperty("line.separator"));
211 }
212 else if (o instanceof DERObject)
213 {
214 buf.append(_dumpAsString(tab, (DERObject)o));
215 }
216 else
217 {
218 buf.append(_dumpAsString(tab, ((DEREncodable)o).getDERObject()));
219 }
220 }
221 return buf.toString();
222 }
223 else if (obj instanceof DERObjectIdentifier)
224 {
225 return indent + "ObjectIdentifier(" + ((DERObjectIdentifier)obj).getId() + ")" + System.getProperty("line.separator");
226 }
227 else if (obj instanceof DERBoolean)
228 {
229 return indent + "Boolean(" + ((DERBoolean)obj).isTrue() + ")" + System.getProperty("line.separator");
230 }
231 else if (obj instanceof DERInteger)
232 {
233 return indent + "Integer(" + ((DERInteger)obj).getValue() + ")" + System.getProperty("line.separator");
234 }
235 else if (obj instanceof DEROctetString)
236 {
237 return indent + obj.toString() + "[" + ((ASN1OctetString)obj).getOctets().length + "] " + System.getProperty("line.separator");
238 }
239 else if (obj instanceof DERIA5String)
240 {
241 return indent + "IA5String(" + ((DERIA5String)obj).getString() + ") " + System.getProperty("line.separator");
242 }
243 else if (obj instanceof DERPrintableString)
244 {
245 return indent + "PrintableString(" + ((DERPrintableString)obj).getString() + ") " + System.getProperty("line.separator");
246 }
247 else if (obj instanceof DERVisibleString)
248 {
249 return indent + "VisibleString(" + ((DERVisibleString)obj).getString() + ") " + System.getProperty("line.separator");
250 }
251 else if (obj instanceof DERBMPString)
252 {
253 return indent + "BMPString(" + ((DERBMPString)obj).getString() + ") " + System.getProperty("line.separator");
254 }
255 else if (obj instanceof DERT61String)
256 {
257 return indent + "T61String(" + ((DERT61String)obj).getString() + ") " + System.getProperty("line.separator");
258 }
259 else if (obj instanceof DERUTCTime)
260 {
261 return indent + "UTCTime(" + ((DERUTCTime)obj).getTime() + ") " + System.getProperty("line.separator");
262 }
263 else if (obj instanceof DERUnknownTag)
264 {
265 return indent + "Unknown " + Integer.toString(((DERUnknownTag)obj).getTag(), 16) + " " + new String (Hex.encode(((DERUnknownTag)obj).getData())) + System.getProperty("line.separator");
266 }
267 else
268 {
269 return indent + obj.toString() + System.getProperty("line.separator");
270 }
271 }
272
273
278 public static String dumpAsString(
279 Object obj)
280 {
281 if (obj instanceof DERObject)
282 {
283 return _dumpAsString("", (DERObject)obj);
284 }
285 else if (obj instanceof DEREncodable)
286 {
287 return _dumpAsString("", ((DEREncodable)obj).getDERObject());
288 }
289
290 return "unknown object type " + obj.toString();
291 }
292 }
293 |
Popular Tags |
Java API By Example, From Geeks To Geeks.