summary refs log tree commit diff
path: root/crypto/src/x509/store/X509AttrCertStoreSelector.cs
blob: 6b3c854f183c6093e6bd6ce0d2796e5be3a9b480 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
using System;
using System.Collections.Generic;

using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Utilities.Collections;
using Org.BouncyCastle.X509.Extension;

namespace Org.BouncyCastle.X509.Store
{
	/**
	* This class is an <code>Selector</code> like implementation to select
	* attribute certificates from a given set of criteria.
	*
	* @see org.bouncycastle.x509.X509AttributeCertificate
	* @see org.bouncycastle.x509.X509Store
	*/
	public class X509AttrCertStoreSelector
		: ISelector<X509V2AttributeCertificate>
	{
		// TODO: name constraints???

		private X509V2AttributeCertificate attributeCert;
		private DateTime? attributeCertificateValid;
		private AttributeCertificateHolder holder;
		private AttributeCertificateIssuer issuer;
		private BigInteger serialNumber;
		private ISet<GeneralName> targetNames = new HashSet<GeneralName>();
		private ISet<GeneralName> targetGroups = new HashSet<GeneralName>();

		public X509AttrCertStoreSelector()
		{
		}

		private X509AttrCertStoreSelector(
			X509AttrCertStoreSelector o)
		{
			this.attributeCert = o.attributeCert;
			this.attributeCertificateValid = o.attributeCertificateValid;
			this.holder = o.holder;
			this.issuer = o.issuer;
			this.serialNumber = o.serialNumber;
			this.targetGroups = new HashSet<GeneralName>(o.targetGroups);
			this.targetNames = new HashSet<GeneralName>(o.targetNames);
		}

		/// <summary>
		/// Decides if the given attribute certificate should be selected.
		/// </summary>
		/// <param name="attrCert">The attribute certificate to be checked.</param>
		/// <returns><code>true</code> if the object matches this selector.</returns>
		public bool Match(X509V2AttributeCertificate attrCert)
		{
			if (attrCert == null)
				return false;

			if (this.attributeCert != null && !this.attributeCert.Equals(attrCert))
				return false;

			if (serialNumber != null && !attrCert.SerialNumber.Equals(serialNumber))
				return false;

			if (holder != null && !attrCert.Holder.Equals(holder))
				return false;

			if (issuer != null && !attrCert.Issuer.Equals(issuer))
				return false;

			if (attributeCertificateValid != null && !attrCert.IsValid(attributeCertificateValid.Value))
				return false;

			if (targetNames.Count > 0 || targetGroups.Count > 0)
			{
				Asn1OctetString targetInfoExt = attrCert.GetExtensionValue(X509Extensions.TargetInformation);

				if (targetInfoExt != null)
				{
					TargetInformation targetinfo;
					try
					{
						targetinfo = TargetInformation.GetInstance(
							X509ExtensionUtilities.FromExtensionValue(targetInfoExt));
					}
					catch (Exception)
					{
						return false;
					}

					Targets[] targetss = targetinfo.GetTargetsObjects();

					if (targetNames.Count > 0)
					{
						bool found = false;

						for (int i = 0; i < targetss.Length && !found; i++)
						{
							Target[] targets = targetss[i].GetTargets();

							for (int j = 0; j < targets.Length; j++)
							{
								GeneralName targetName = targets[j].TargetName;

								if (targetName != null && targetNames.Contains(targetName))
								{
									found = true;
									break;
								}
							}
						}

						if (!found)
							return false;
					}

					if (targetGroups.Count > 0)
					{
						bool found = false;

						for (int i = 0; i < targetss.Length && !found; i++)
						{
							Target[] targets = targetss[i].GetTargets();

							for (int j = 0; j < targets.Length; j++)
							{
								GeneralName targetGroup = targets[j].TargetGroup;

								if (targetGroup != null && targetGroups.Contains(targetGroup))
								{
									found = true;
									break;
								}
							}
						}

						if (!found)
							return false;
					}
				}
			}

			return true;
		}

		public object Clone()
		{
			return new X509AttrCertStoreSelector(this);
		}

		/// <summary>The attribute certificate which must be matched.</summary>
		/// <remarks>If <c>null</c> is given, any will do.</remarks>
		public X509V2AttributeCertificate AttributeCert
		{
			get { return attributeCert; }
			set { this.attributeCert = value; }
		}

		/// <summary>The criteria for validity</summary>
		/// <remarks>If <c>null</c> is given any will do.</remarks>
		public DateTime? AttributeCertificateValid
		{
			get { return attributeCertificateValid; }
			set { this.attributeCertificateValid = value; }
		}

		/// <summary>The holder.</summary>
		/// <remarks>If <c>null</c> is given any will do.</remarks>
		public AttributeCertificateHolder Holder
		{
			get { return holder; }
			set { this.holder = value; }
		}

		/// <summary>The issuer.</summary>
		/// <remarks>If <c>null</c> is given any will do.</remarks>
		public AttributeCertificateIssuer Issuer
		{
			get { return issuer; }
			set { this.issuer = value; }
		}

		/// <summary>The serial number.</summary>
		/// <remarks>If <c>null</c> is given any will do.</remarks>
		public BigInteger SerialNumber
		{
			get { return serialNumber; }
			set { this.serialNumber = value; }
		}

		/**
		* Adds a target name criterion for the attribute certificate to the target
		* information extension criteria. The <code>X509AttributeCertificate</code>
		* must contain at least one of the specified target names.
		* <p>
		* Each attribute certificate may contain a target information extension
		* limiting the servers where this attribute certificate can be used. If
		* this extension is not present, the attribute certificate is not targeted
		* and may be accepted by any server.
		* </p>
		*
		* @param name The name as a GeneralName (not <code>null</code>)
		*/
		public void AddTargetName(GeneralName name)
		{
			targetNames.Add(name);
		}

		/**
		* Adds a target name criterion for the attribute certificate to the target
		* information extension criteria. The <code>X509AttributeCertificate</code>
		* must contain at least one of the specified target names.
		* <p>
		* Each attribute certificate may contain a target information extension
		* limiting the servers where this attribute certificate can be used. If
		* this extension is not present, the attribute certificate is not targeted
		* and may be accepted by any server.
		* </p>
		*
		* @param name a byte array containing the name in ASN.1 DER encoded form of a GeneralName
		* @throws IOException if a parsing error occurs.
		*/
		public void AddTargetName(byte[] name)
		{
			AddTargetName(GeneralName.GetInstance(Asn1Object.FromByteArray(name)));
		}

		/**
		* Adds a collection with target names criteria. If <code>null</code> is
		* given any will do.
		* <p>
		* The collection consists of either GeneralName objects or byte[] arrays representing
		* DER encoded GeneralName structures.
		* </p>
		* 
		* @param names A collection of target names.
		* @throws IOException if a parsing error occurs.
		* @see #AddTargetName(byte[])
		* @see #AddTargetName(GeneralName)
		*/
		public void SetTargetNames(IEnumerable<object> names)
		{
			targetNames = ExtractGeneralNames(names);
		}

		/**
		* Gets the target names. The collection consists of <code>List</code>s
		* made up of an <code>Integer</code> in the first entry and a DER encoded
		* byte array or a <code>String</code> in the second entry.
		* <p>The returned collection is immutable.</p>
		* 
		* @return The collection of target names
		* @see #setTargetNames(Collection)
		*/
		public IEnumerable<GeneralName> GetTargetNames()
		{
			return CollectionUtilities.Proxy(targetNames);
		}

		/**
		* Adds a target group criterion for the attribute certificate to the target
		* information extension criteria. The <code>X509AttributeCertificate</code>
		* must contain at least one of the specified target groups.
		* <p>
		* Each attribute certificate may contain a target information extension
		* limiting the servers where this attribute certificate can be used. If
		* this extension is not present, the attribute certificate is not targeted
		* and may be accepted by any server.
		* </p>
		*
		* @param group The group as GeneralName form (not <code>null</code>)
		*/
		public void AddTargetGroup(GeneralName group)
		{
			targetGroups.Add(group);
		}

		/**
		* Adds a target group criterion for the attribute certificate to the target
		* information extension criteria. The <code>X509AttributeCertificate</code>
		* must contain at least one of the specified target groups.
		* <p>
		* Each attribute certificate may contain a target information extension
		* limiting the servers where this attribute certificate can be used. If
		* this extension is not present, the attribute certificate is not targeted
		* and may be accepted by any server.
		* </p>
		*
		* @param name a byte array containing the group in ASN.1 DER encoded form of a GeneralName
		* @throws IOException if a parsing error occurs.
		*/
		public void AddTargetGroup(byte[] name)
		{
			AddTargetGroup(GeneralName.GetInstance(Asn1Object.FromByteArray(name)));
		}

		/**
		* Adds a collection with target groups criteria. If <code>null</code> is
		* given any will do.
		* <p>
		* The collection consists of <code>GeneralName</code> objects or <code>byte[]</code>
		* representing DER encoded GeneralNames.
		* </p>
		*
		* @param names A collection of target groups.
		* @throws IOException if a parsing error occurs.
		* @see #AddTargetGroup(byte[])
		* @see #AddTargetGroup(GeneralName)
		*/
		public void SetTargetGroups(IEnumerable<object> names)
		{
			targetGroups = ExtractGeneralNames(names);
		}

		/**
		* Gets the target groups. The collection consists of <code>List</code>s
		* made up of an <code>Integer</code> in the first entry and a DER encoded
		* byte array or a <code>String</code> in the second entry.
		* <p>The returned collection is immutable.</p>
		*
		* @return The collection of target groups.
		* @see #setTargetGroups(Collection)
		*/
		public IEnumerable<GeneralName> GetTargetGroups()
		{
			return CollectionUtilities.Proxy(targetGroups);
		}

		private ISet<GeneralName> ExtractGeneralNames(IEnumerable<object> names)
		{
			var result = new HashSet<GeneralName>();

			if (names != null)
			{
				foreach (object o in names)
				{
                    result.Add(GeneralName.GetInstance(o));
				}
			}

			return result;
		}
	}
}