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
|
// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.cms.profile.constraint;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Locale;
import netscape.security.x509.CRLExtensions;
import netscape.security.x509.CRLReasonExtension;
import netscape.security.x509.CertificateExtensions;
import netscape.security.x509.CertificateSubjectName;
import netscape.security.x509.Extension;
import netscape.security.x509.KeyUsageExtension;
import netscape.security.x509.RevocationReason;
import netscape.security.x509.X509CertImpl;
import netscape.security.x509.X509CertInfo;
import com.netscape.certsrv.apps.CMS;
import com.netscape.certsrv.authority.IAuthority;
import com.netscape.certsrv.base.EBaseException;
import com.netscape.certsrv.base.IConfigStore;
import com.netscape.certsrv.ca.ICertificateAuthority;
import com.netscape.certsrv.dbs.certdb.ICertRecord;
import com.netscape.certsrv.dbs.certdb.ICertificateRepository;
import com.netscape.certsrv.dbs.certdb.IRevocationInfo;
import com.netscape.certsrv.profile.EProfileException;
import com.netscape.certsrv.profile.ERejectException;
import com.netscape.certsrv.profile.IPolicyDefault;
import com.netscape.certsrv.profile.IProfile;
import com.netscape.certsrv.property.Descriptor;
import com.netscape.certsrv.property.IDescriptor;
import com.netscape.certsrv.request.IRequest;
import com.netscape.cms.profile.def.NoDefault;
import com.netscape.cms.profile.def.SubjectNameDefault;
import com.netscape.cms.profile.def.UserSubjectNameDefault;
/**
* This class implements the unique subject name constraint. It checks if the
* subject name in the certificate is unique in the internal database, ie, no
* two certificates have the same subject name.
*
* @version $Revision$, $Date$
*/
public class UniqueSubjectNameConstraint extends EnrollConstraint {
public static final String CONFIG_KEY_USAGE_EXTENSION_CHECKING = "enableKeyUsageExtensionChecking";
private boolean mKeyUsageExtensionChecking = true;
public UniqueSubjectNameConstraint() {
addConfigName(CONFIG_KEY_USAGE_EXTENSION_CHECKING);
}
public void init(IProfile profile, IConfigStore config)
throws EProfileException {
super.init(profile, config);
}
public IDescriptor getConfigDescriptor(Locale locale, String name) {
if (name.equals(CONFIG_KEY_USAGE_EXTENSION_CHECKING)) {
return new Descriptor(IDescriptor.BOOLEAN, null, "true",
CMS.getUserMessage(locale,
"CMS_PROFILE_CONFIG_KEY_USAGE_EXTENSION_CHECKING"));
}
return null;
}
public String getDefaultConfig(String name) {
return null;
}
/**
* Checks if the key extension in the issued certificate is the same as the
* one in the certificate template.
*/
private boolean sameKeyUsageExtension(ICertRecord rec, X509CertInfo certInfo) {
X509CertImpl impl = rec.getCertificate();
boolean bits[] = impl.getKeyUsage();
CertificateExtensions extensions = null;
try {
extensions = (CertificateExtensions) certInfo
.get(X509CertInfo.EXTENSIONS);
} catch (IOException e) {
} catch (java.security.cert.CertificateException e) {
}
KeyUsageExtension ext = null;
if (extensions == null) {
if (bits != null)
return false;
} else {
try {
ext = (KeyUsageExtension) extensions
.get(KeyUsageExtension.NAME);
} catch (IOException e) {
// extension isn't there.
}
if (ext == null) {
if (bits != null)
return false;
} else {
boolean[] InfoBits = ext.getBits();
if (InfoBits == null) {
if (bits != null)
return false;
} else {
if (bits == null)
return false;
if (InfoBits.length != bits.length) {
return false;
}
for (int i = 0; i < InfoBits.length; i++) {
if (InfoBits[i] != bits[i])
return false;
}
}
}
}
return true;
}
/**
* Validates the request. The request is not modified during the validation.
*
* Rules are as follows: If the subject name is not unique, then the request
* will be rejected unless: 1. the certificate is expired or expired_revoked
* 2. the certificate is revoked and the revocation reason is not "on hold"
* 3. the keyUsageExtension bits are different and
* enableKeyUsageExtensionChecking=true (default)
*/
public void validate(IRequest request, X509CertInfo info)
throws ERejectException {
CMS.debug("UniqueSubjectNameConstraint: validate start");
CertificateSubjectName sn = null;
IAuthority authority = (IAuthority) CMS.getSubsystem("ca");
mKeyUsageExtensionChecking = getConfigBoolean(CONFIG_KEY_USAGE_EXTENSION_CHECKING);
ICertificateRepository certdb = null;
if (authority != null && authority instanceof ICertificateAuthority) {
ICertificateAuthority ca = (ICertificateAuthority) authority;
certdb = ca.getCertificateRepository();
}
try {
sn = (CertificateSubjectName) info.get(X509CertInfo.SUBJECT);
} catch (Exception e) {
throw new ERejectException(CMS.getUserMessage(getLocale(request),
"CMS_PROFILE_SUBJECT_NAME_NOT_FOUND"));
}
String certsubjectname = null;
if (sn == null)
throw new ERejectException(CMS.getUserMessage(getLocale(request),
"CMS_PROFILE_SUBJECT_NAME_NOT_FOUND"));
else {
certsubjectname = sn.toString();
String filter = "x509Cert.subject=" + certsubjectname;
Enumeration sameSubjRecords = null;
try {
sameSubjRecords = certdb.findCertRecords(filter);
} catch (EBaseException e) {
CMS.debug("UniqueSubjectNameConstraint exception: "
+ e.toString());
}
while (sameSubjRecords != null && sameSubjRecords.hasMoreElements()) {
ICertRecord rec = (ICertRecord) sameSubjRecords.nextElement();
String status = rec.getStatus();
IRevocationInfo revocationInfo = rec.getRevocationInfo();
RevocationReason reason = null;
if (revocationInfo != null) {
CRLExtensions crlExts = revocationInfo
.getCRLEntryExtensions();
if (crlExts != null) {
Enumeration enumx = crlExts.getElements();
while (enumx.hasMoreElements()) {
Extension ext = (Extension) enumx.nextElement();
if (ext instanceof CRLReasonExtension) {
reason = ((CRLReasonExtension) ext).getReason();
}
}
}
}
if (status.equals(ICertRecord.STATUS_EXPIRED)
|| status.equals(ICertRecord.STATUS_REVOKED_EXPIRED)) {
continue;
}
if (status.equals(ICertRecord.STATUS_REVOKED) && reason != null
&& (!reason.equals(RevocationReason.CERTIFICATE_HOLD))) {
continue;
}
if (mKeyUsageExtensionChecking
&& !sameKeyUsageExtension(rec, info)) {
continue;
}
throw new ERejectException(CMS.getUserMessage(
getLocale(request),
"CMS_PROFILE_SUBJECT_NAME_NOT_UNIQUE", certsubjectname));
}
}
CMS.debug("UniqueSubjectNameConstraint: validate end");
}
public String getText(Locale locale) {
String params[] = { getConfig(CONFIG_KEY_USAGE_EXTENSION_CHECKING) };
return CMS.getUserMessage(locale,
"CMS_PROFILE_CONSTRAINT_UNIQUE_SUBJECT_NAME_TEXT", params);
}
public boolean isApplicable(IPolicyDefault def) {
if (def instanceof NoDefault)
return true;
if (def instanceof SubjectNameDefault)
return true;
if (def instanceof UserSubjectNameDefault)
return true;
return false;
}
}
|
