From 69a95e89c8a306713bbe719ce23f49e7536774be Mon Sep 17 00:00:00 2001
From: =?utf8?q?David=20=E2=80=98Bombe=E2=80=99=20Roden?=
 <bombe@pterodactylus.net>
Date: Sat, 18 Apr 2020 16:14:41 +0200
Subject: [PATCH] =?utf8?q?=F0=9F=9A=A7=20Try=20to=20only=20allow=20identit?=
 =?utf8?q?ies=20that=20have=20no=20or=20positive=20trust?=
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Content-Type: text/plain; charset=utf8
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---
 .../pterodactylus/sone/freenet/wot/Identity.java   |  2 ++
 .../sone/freenet/wot/DefaultIdentity.kt            |  8 +++++++-
 .../sone/freenet/wot/IdentityManagerImpl.kt        | 22 ++++++++++++++++++++--
 3 files changed, 29 insertions(+), 3 deletions(-)

diff --git a/src/main/java/net/pterodactylus/sone/freenet/wot/Identity.java b/src/main/java/net/pterodactylus/sone/freenet/wot/Identity.java
index 63bceb1..e6f4f62 100644
--- a/src/main/java/net/pterodactylus/sone/freenet/wot/Identity.java
+++ b/src/main/java/net/pterodactylus/sone/freenet/wot/Identity.java
@@ -131,6 +131,8 @@ public interface Identity {
 	 */
 	public Identity removeProperty(String name);
 
+	Map<OwnIdentity, Trust> getTrust();
+
 	/**
 	 * Retrieves the trust that this identity receives from the given own
 	 * identity. If this identity is not in the own identity’s trust tree, a
diff --git a/src/main/kotlin/net/pterodactylus/sone/freenet/wot/DefaultIdentity.kt b/src/main/kotlin/net/pterodactylus/sone/freenet/wot/DefaultIdentity.kt
index 6097916..88527b3 100644
--- a/src/main/kotlin/net/pterodactylus/sone/freenet/wot/DefaultIdentity.kt
+++ b/src/main/kotlin/net/pterodactylus/sone/freenet/wot/DefaultIdentity.kt
@@ -17,7 +17,9 @@
 
 package net.pterodactylus.sone.freenet.wot
 
-import java.util.Collections.*
+import java.util.Collections.synchronizedMap
+import java.util.Collections.synchronizedSet
+import kotlin.collections.set
 
 /**
  * A Web of Trust identity.
@@ -77,6 +79,10 @@ open class DefaultIdentity(private val id: String, private val nickname: String?
 		}
 	}
 
+	override fun getTrust(): Map<OwnIdentity, Trust> = synchronized(trustCache) {
+		trustCache.toMap()
+	}
+
 	override fun getTrust(ownIdentity: OwnIdentity) = synchronized(trustCache) {
 		trustCache[ownIdentity]
 	}
diff --git a/src/main/kotlin/net/pterodactylus/sone/freenet/wot/IdentityManagerImpl.kt b/src/main/kotlin/net/pterodactylus/sone/freenet/wot/IdentityManagerImpl.kt
index f0e08d4..676278d 100644
--- a/src/main/kotlin/net/pterodactylus/sone/freenet/wot/IdentityManagerImpl.kt
+++ b/src/main/kotlin/net/pterodactylus/sone/freenet/wot/IdentityManagerImpl.kt
@@ -58,9 +58,20 @@ class IdentityManagerImpl @Inject constructor(
 			try {
 				val currentIdentities = identityLoader.loadIdentities()
 
-				val onlyTrustedByAll = currentIdentities.mapValues { (ownIdentity, trustedIdentities) ->
+				val identitiesWithTrust = currentIdentities.values.flatten()
+						.groupBy { it.id }
+						.mapValues { (_, identities) ->
+							identities.reduce { accIdentity, identity ->
+								identity.trust.forEach { (ownIdentity: OwnIdentity?, trust: Trust?) ->
+									accIdentity.setTrust(ownIdentity, trust)
+								}
+								accIdentity
+							}
+						}
+
+				val onlyTrustedByAll = currentIdentities.mapValues { (_, trustedIdentities) ->
 					trustedIdentities.filter { trustedIdentity ->
-						currentIdentities.filterValues { it.isNotEmpty() }.all { trustedIdentity in it.value }
+						identitiesWithTrust[trustedIdentity.id]!!.trust.all { it.value.hasZeroOrPositiveTrust() }
 					}
 				}
 				logger.log(Level.FINE, "Reduced (${currentIdentities.size},(${currentIdentities.values.joinToString { it.size.toString() }})) identities to (${onlyTrustedByAll.size},(${onlyTrustedByAll.values.joinToString { it.size.toString() }})).")
@@ -96,3 +107,10 @@ private fun notThrowing(action: () -> Unit): Boolean =
 		} catch (e: Exception) {
 			false
 		}
+
+private fun Trust.hasZeroOrPositiveTrust() =
+		if (explicit == null) {
+			implicit == null || implicit >= 0
+		} else {
+			explicit >= 0
+		}
-- 
2.7.4