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Diffstat (limited to 'pki/base/common/src/com/netscape/cms/policy/extensions/PolicyConstraintsExt.java')
| -rw-r--r-- | pki/base/common/src/com/netscape/cms/policy/extensions/PolicyConstraintsExt.java | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/pki/base/common/src/com/netscape/cms/policy/extensions/PolicyConstraintsExt.java b/pki/base/common/src/com/netscape/cms/policy/extensions/PolicyConstraintsExt.java new file mode 100644 index 000000000..4396a09dd --- /dev/null +++ b/pki/base/common/src/com/netscape/cms/policy/extensions/PolicyConstraintsExt.java @@ -0,0 +1,282 @@ +// --- 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.policy.extensions; + + +import java.util.*; +import java.io.*; +import java.security.cert.*; +import com.netscape.certsrv.request.IRequest; +import com.netscape.certsrv.request.PolicyResult; +import com.netscape.certsrv.policy.*; +import com.netscape.certsrv.base.*; +import com.netscape.certsrv.ca.*; +import com.netscape.certsrv.apps.*; +import com.netscape.certsrv.logging.ILogger; +import netscape.security.x509.*; +import netscape.security.util.*; +import com.netscape.cms.policy.APolicyRule; + + +/** + * Policy Constraints Extension Policy + * Adds the policy constraints extension to (CA) certificates. + * Filtering of CA certificates is done through predicates. + * <P> + * <PRE> + * NOTE: The Policy Framework has been replaced by the Profile Framework. + * </PRE> + * <P> + * + * @deprecated + * @version $Revision$, $Date$ + */ +public class PolicyConstraintsExt extends APolicyRule + implements IEnrollmentPolicy, IExtendedPluginInfo { + protected static final String PROP_CRITICAL = "critical"; + protected static final String + PROP_REQ_EXPLICIT_POLICY = "reqExplicitPolicy"; + protected static final String + PROP_INHIBIT_POLICY_MAPPING = "inhibitPolicyMapping"; + + protected static final boolean DEF_CRITICAL = false; + protected static final int DEF_REQ_EXPLICIT_POLICY = -1; // not set + protected static final int DEF_INHIBIT_POLICY_MAPPING = -1; // not set + + protected boolean mEnabled = false; + protected IConfigStore mConfig = null; + + protected boolean mCritical = DEF_CRITICAL; + protected int mReqExplicitPolicy = DEF_REQ_EXPLICIT_POLICY; + protected int mInhibitPolicyMapping = DEF_INHIBIT_POLICY_MAPPING; + protected PolicyConstraintsExtension mPolicyConstraintsExtension = null; + + protected Vector mInstanceParams = new Vector(); + + protected static Vector mDefaultParams = new Vector(); + static { + mDefaultParams.addElement(PROP_CRITICAL + "=" + DEF_CRITICAL); + mDefaultParams.addElement( + PROP_REQ_EXPLICIT_POLICY + "=" + DEF_REQ_EXPLICIT_POLICY); + mDefaultParams.addElement( + PROP_INHIBIT_POLICY_MAPPING + "=" + DEF_INHIBIT_POLICY_MAPPING); + } + + public PolicyConstraintsExt() { + NAME = "PolicyConstriantsExt"; + DESC = "Sets Policy Constraints Extension on subordinate CA certs"; + } + + /** + * Initializes this policy rule. + * <P> + * + * The entries may be of the form: + * + * ca.Policy.rule.<ruleName>.predicate=certType==ca + * ca.Policy.rule.<ruleName>.implName= + * ca.Policy.rule.<ruleName>.enable=true + * + * @param config The config store reference + */ + public void init(ISubsystem owner, IConfigStore config) + throws EBaseException { + mConfig = config; + + // XXX should do do this ? + // if CA does not allow subordinate CAs by way of basic constraints, + // this policy always rejects + /***** + ICertAuthority certAuthority = (ICertAuthority) + ((GenericPolicyProcessor)owner).mAuthority; + if (certAuthority instanceof ICertificateAuthority) { + CertificateChain caChain = certAuthority.getCACertChain(); + X509Certificate caCert = null; + // Note that in RA the chain could be null if CA was not up when + // RA was started. In that case just set the length to -1 and let + // CA reject if it does not allow any subordinate CA certs. + if (caChain != null) { + caCert = caChain.getFirstCertificate(); + if (caCert != null) + mCAPathLen = caCert.getBasicConstraints(); + } + } + ****/ + + mEnabled = mConfig.getBoolean( + IPolicyProcessor.PROP_ENABLE, false); + mCritical = mConfig.getBoolean(PROP_CRITICAL, DEF_CRITICAL); + + mReqExplicitPolicy = mConfig.getInteger( + PROP_REQ_EXPLICIT_POLICY, DEF_REQ_EXPLICIT_POLICY); + mInhibitPolicyMapping = mConfig.getInteger( + PROP_INHIBIT_POLICY_MAPPING, DEF_INHIBIT_POLICY_MAPPING); + + if (mReqExplicitPolicy < -1) + mReqExplicitPolicy = -1; + if (mInhibitPolicyMapping < -1) + mInhibitPolicyMapping = -1; + + // create instance of policy constraings extension + try { + mPolicyConstraintsExtension = + new PolicyConstraintsExtension(mCritical, + mReqExplicitPolicy, mInhibitPolicyMapping); + CMS.debug( + "PolicyConstraintsExt: Created Policy Constraints Extension: " + + mPolicyConstraintsExtension); + } catch (IOException e) { + log(ILogger.LL_FAILURE, + CMS.getLogMessage("POLICY_ERROR_CANT_INIT_POLICY_CONST_EXT", e.toString())); + throw new EBaseException( + CMS.getUserMessage("CMS_BASE_INTERNAL_ERROR", + "Could not init Policy Constraints Extension. Error: " + e)); + } + + // form instance params + mInstanceParams.addElement(PROP_CRITICAL + "=" + mCritical); + mInstanceParams.addElement( + PROP_REQ_EXPLICIT_POLICY + "=" + mReqExplicitPolicy); + mInstanceParams.addElement( + PROP_INHIBIT_POLICY_MAPPING + "=" + mInhibitPolicyMapping); + } + + /** + * Adds Policy Constraints Extension to a (CA) certificate. + * + * If a Policy constraints Extension is already there, accept it if + * it's been approved by agent, else replace it. + * + * @param req The request on which to apply policy. + * @return The policy result object. + */ + public PolicyResult apply(IRequest req) { + // if extension hasn't been properly configured reject requests until + // it has been resolved (or disabled). + if (mPolicyConstraintsExtension == null) { + return PolicyResult.ACCEPTED; + } + + // get certInfo from request. + X509CertInfo[] ci = + req.getExtDataInCertInfoArray(IRequest.CERT_INFO); + + if (ci == null || ci[0] == null) { + setError(req, CMS.getUserMessage("CMS_POLICY_NO_CERT_INFO"), NAME); + return PolicyResult.REJECTED; + } + + for (int i = 0; i < ci.length; i++) { + PolicyResult certRes = applyCert(req, ci[i]); + + if (certRes == PolicyResult.REJECTED) + return certRes; + } + return PolicyResult.ACCEPTED; + } + + public PolicyResult applyCert(IRequest req, X509CertInfo certInfo) { + + // check if name constraints extension already exists. + // if not agent approved, replace name constraints extension with ours. + // else ignore. + try { + PolicyConstraintsExtension policyConstraintsExt = null; + CertificateExtensions extensions = (CertificateExtensions) + certInfo.get(X509CertInfo.EXTENSIONS); + + try { + if (extensions != null) { + policyConstraintsExt = (PolicyConstraintsExtension) + extensions.get(PolicyConstraintsExtension.NAME); + } + } catch (IOException e) { + // extension isn't there. + } + + if (policyConstraintsExt != null) { + if (agentApproved(req)) { + return PolicyResult.ACCEPTED; + } else { + extensions.delete(PolicyConstraintsExtension.NAME); + } + } + + if (extensions == null) { + certInfo.set(X509CertInfo.VERSION, + new CertificateVersion(CertificateVersion.V3)); + extensions = new CertificateExtensions(); + certInfo.set(X509CertInfo.EXTENSIONS, extensions); + } + extensions.set( + "PolicyConstriantsExt", mPolicyConstraintsExtension); + CMS.debug("PolicyConstraintsExt: added our policy constraints extension"); + return PolicyResult.ACCEPTED; + } catch (IOException e) { + log(ILogger.LL_FAILURE, + CMS.getLogMessage("POLICY_ERROR_CANT_PROCESS_POLICY_CONST_EXT", e.toString())); + setError(req, CMS.getUserMessage("CMS_POLICY_UNEXPECTED_POLICY_ERROR"), + NAME, e.getMessage()); + return PolicyResult.REJECTED; + } catch (CertificateException e) { + log(ILogger.LL_FAILURE, CMS.getLogMessage("CA_CERT_INFO_ERROR", e.toString())); + setError(req, CMS.getUserMessage("CMS_POLICY_UNEXPECTED_POLICY_ERROR"), + NAME, "Certificate Info Error"); + return PolicyResult.REJECTED; + } + } + + /** + * Return configured parameters for a policy rule instance. + * + * @return nvPairs A Vector of name/value pairs. + */ + public Vector getInstanceParams() { + return mInstanceParams; + } + + /** + * Return default parameters for a policy implementation. + * + * @return nvPairs A Vector of name/value pairs. + */ + public Vector getDefaultParams() { + return mDefaultParams; + } + + /** + * gets plugin info for pretty console edit displays. + */ + public String[] getExtendedPluginInfo(Locale locale) { + mInstanceParams.addElement(PROP_CRITICAL + "=" + mCritical); + mInstanceParams.addElement( + PROP_REQ_EXPLICIT_POLICY + "=" + mReqExplicitPolicy); + mInstanceParams.addElement( + PROP_INHIBIT_POLICY_MAPPING + "=" + mInhibitPolicyMapping); + + String[] params = { + PROP_CRITICAL + ";boolean;RFC 2459 recommendation: may be critical or non-critical.", + PROP_REQ_EXPLICIT_POLICY + ";integer;Number of addional certificates that may appear in the path before an explicit policy is required. If less than 0 this field is unset in the extension.", + PROP_INHIBIT_POLICY_MAPPING + ";integer;Number of addional certificates that may appear in the path before policy mapping is no longer permitted. If less than 0 this field is unset in the extension.", + IExtendedPluginInfo.HELP_TOKEN + ";configuration-policyrules-policyconstraints" + }; + + return params; + } +} + |