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Code Issues Releases Wiki Activity

Port CertificationFactory to kotlin

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This commit is contained in:
Paul Schaub 2023-06-29 18:04:09 +02:00
parent 9befc759f5
commit aa854eea0c
Signed by: vanitasvitae
GPG key ID: 62BEE9264BF17311
3 changed files with 74 additions and 126 deletions
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125
pgpainless-wot/src/main/java/org/pgpainless/wot/CertificationFactory.java
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@ -1,125 +0,0 @@
// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.wot;
import java.util.ArrayList;
import java.util.List;
import org.bouncycastle.bcpg.sig.RegularExpression;
import org.bouncycastle.bcpg.sig.TrustSignature;
import org.bouncycastle.openpgp.PGPSignature;
import org.pgpainless.signature.subpackets.SignatureSubpacketsUtil;
import org.pgpainless.wot.dijkstra.sq.CertSynopsis;
import org.pgpainless.wot.dijkstra.sq.Certification;
import org.pgpainless.wot.dijkstra.sq.Depth;
import org.pgpainless.wot.dijkstra.sq.RegexSet;
/**
* Factory class for creating {@link Certification} objects from {@link PGPSignature PGPSignatures}.
* The purpose of this class is to minimize the number of PGPainless / Bouncycastle class dependencies in wot-dijkstra.
*/
public class CertificationFactory {
/**
* Create a {@link Certification} object from a delegation signature.
*
* @param issuer signature issuer certificate
* @param target signature target certificate
* @param signature signature
* @return certification
*/
public static Certification fromDelegation(CertSynopsis issuer,
CertSynopsis target,
PGPSignature signature) {
return fromSignature(issuer, null, target, signature);
}
/**
* Create a {@link Certification} object from a certification signature.
*
* @param issuer signature issuer certificate
* @param targetUserId signature target user ID
* @param target signature target certificate
* @param signature signature
* @return certification
*/
public static Certification fromCertification(CertSynopsis issuer,
String targetUserId,
CertSynopsis target,
PGPSignature signature) {
return fromSignature(issuer, targetUserId, target, signature);
}
/**
* Create a {@link Certification} object from a signature.
*
* @param issuer signature issuer certificate
* @param targetUserId optional signature target user ID
* @param target signature target certificate
* @param signature signature
* @return certification
*/
public static Certification fromSignature(CertSynopsis issuer,
String targetUserId,
CertSynopsis target,
PGPSignature signature) {
return new Certification(
issuer,
target,
targetUserId,
SignatureSubpacketsUtil.getSignatureCreationTime(signature).getTime(),
SignatureSubpacketsUtil.getSignatureExpirationTimeAsDate(signature),
SignatureSubpacketsUtil.isExportable(signature),
getTrustAmountFrom(signature),
getTrustDepthFrom(signature),
regexSetFrom(signature));
}
/**
* Extract the trust amount from the signature.
* If the signature has no {@link TrustSignature} subpacket, return a default value of 120.
*
* @param signature signature
* @return trust amount
*/
private static int getTrustAmountFrom(PGPSignature signature) {
TrustSignature packet = SignatureSubpacketsUtil.getTrustSignature(signature);
if (packet != null) {
return packet.getTrustAmount();
}
return 120; // default value
}
/**
* Extract the trust depth from the signature.
* If the signature has no {@link TrustSignature} subpacket, return a default value of 0.
*
* @param signature signature
* @return trust depth
*/
private static Depth getTrustDepthFrom(PGPSignature signature) {
TrustSignature packet = SignatureSubpacketsUtil.getTrustSignature(signature);
if (packet != null) {
return Depth.auto(packet.getDepth());
}
return Depth.limited(0);
}
/**
* Extract a {@link RegexSet} from the signature.
* If the signature has no {@link RegularExpression} subpacket, the result will equate to a wildcard.
*
* @param signature signature
* @return regex set
*/
private static RegexSet regexSetFrom(PGPSignature signature) {
List<RegularExpression> regexList = SignatureSubpacketsUtil.getRegularExpressions(signature);
List<String> stringList = new ArrayList<>();
for (RegularExpression regex : regexList) {
stringList.add(regex.getRegex());
}
return RegexSet.fromExpressionList(stringList);
}
}

3
pgpainless-wot/src/main/java/org/pgpainless/wot/WebOfTrust.java
View file

@ -37,6 +37,7 @@ import org.pgpainless.wot.dijkstra.sq.ReferenceTime;
import org.pgpainless.wot.sugar.IterableIterator;
import org.pgpainless.wot.sugar.PrefixedIterator;
import org.pgpainless.wot.sugar.Supplier;
import org.pgpainless.wot.util.CertificationFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import pgp.cert_d.PGPCertificateDirectory;
@ -301,7 +302,7 @@ public class WebOfTrust {
boolean valid = SignatureVerifier.verifySignatureOverUserId(userId, certification,
issuerSigningKey, targetPrimaryKey, policy, referenceTime.getTimestamp());
if (valid) {
indexEdge(CertificationFactory.fromCertification(issuer, userId, target, certification));
indexEdge(CertificationFactory.fromCertification(issuer, target, userId, certification));
}
} catch (SignatureValidationException e) {
LOGGER.warn("Cannot verify signature for '" + userId + "' by " + issuerFingerprint + " on cert of " + target.getFingerprint(), e);

72
pgpainless-wot/src/main/kotlin/org/pgpainless/wot/util/CertificationFactory.kt Normal file
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@ -0,0 +1,72 @@
// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.wot.util
import org.bouncycastle.openpgp.PGPSignature
import org.pgpainless.signature.subpackets.SignatureSubpacketsUtil
import org.pgpainless.wot.dijkstra.sq.CertSynopsis
import org.pgpainless.wot.dijkstra.sq.Certification
import org.pgpainless.wot.dijkstra.sq.Depth
import org.pgpainless.wot.dijkstra.sq.RegexSet
import org.pgpainless.wot.dijkstra.sq.RegexSet.Companion.fromExpressionList
class CertificationFactory {
companion object {
@JvmStatic
fun fromDelegation(issuer: CertSynopsis,
target: CertSynopsis,
signature: PGPSignature): Certification {
return fromSignature(issuer, target, null, signature)
}
@JvmStatic
fun fromCertification(issuer: CertSynopsis,
target: CertSynopsis,
targetUserId: String,
signature: PGPSignature): Certification {
return fromSignature(issuer, target, targetUserId, signature)
}
@JvmStatic
fun fromSignature(issuer: CertSynopsis,
target: CertSynopsis,
targetUserId: String?,
signature: PGPSignature): Certification {
return Certification(
issuer,
target,
targetUserId,
SignatureSubpacketsUtil.getSignatureCreationTime(signature)!!.time,
SignatureSubpacketsUtil.getSignatureExpirationTimeAsDate(signature),
SignatureSubpacketsUtil.isExportable(signature),
getTrustAmountFrom(signature),
getTrustDepthFrom(signature),
regexSetFrom(signature))
}
@JvmStatic
private fun getTrustAmountFrom(signature: PGPSignature): Int {
val packet = SignatureSubpacketsUtil.getTrustSignature(signature)
return packet?.trustAmount ?: 120
}
@JvmStatic
private fun getTrustDepthFrom(signature: PGPSignature): Depth {
val packet = SignatureSubpacketsUtil.getTrustSignature(signature)
return if (packet != null) {
Depth.auto(packet.depth)
} else Depth.limited(0)
}
@JvmStatic
private fun regexSetFrom(signature: PGPSignature): RegexSet {
val regexList = SignatureSubpacketsUtil.getRegularExpressions(signature)
val stringList: MutableList<String> = mutableListOf()
regexList.mapTo(stringList) { it.regex }
return fromExpressionList(stringList)
}
}
}