From ae88bca92407d571b73ee0eadd4ac65338b5ba20 Mon Sep 17 00:00:00 2001
From: Graham <gpe@openrs2.org>
Date: Sat, 27 Mar 2021 10:03:03 +0000
Subject: [PATCH] Add ent command for analysing the randomness of keys

Signed-off-by: Graham <gpe@openrs2.org>
---
 .../org/openrs2/archive/key/EntCommand.kt     | 32 ++++++++++++++++
 .../org/openrs2/archive/key/KeyCommand.kt     |  1 +
 .../org/openrs2/archive/key/KeyExporter.kt    | 38 +++++++++++++++++++
 3 files changed, 71 insertions(+)
 create mode 100644 archive/src/main/kotlin/org/openrs2/archive/key/EntCommand.kt
 create mode 100644 archive/src/main/kotlin/org/openrs2/archive/key/KeyExporter.kt

diff --git a/archive/src/main/kotlin/org/openrs2/archive/key/EntCommand.kt b/archive/src/main/kotlin/org/openrs2/archive/key/EntCommand.kt
new file mode 100644
index 0000000000..5a375c0efe
--- /dev/null
+++ b/archive/src/main/kotlin/org/openrs2/archive/key/EntCommand.kt
@@ -0,0 +1,32 @@
+package org.openrs2.archive.key
+
+import com.github.ajalt.clikt.core.CliktCommand
+import com.google.inject.Guice
+import kotlinx.coroutines.runBlocking
+import org.openrs2.archive.ArchiveModule
+import org.openrs2.inject.CloseableInjector
+import java.io.BufferedOutputStream
+import java.io.DataOutputStream
+
+public class EntCommand : CliktCommand(name = "ent") {
+    override fun run(): Unit = runBlocking {
+        CloseableInjector(Guice.createInjector(ArchiveModule)).use { injector ->
+            val exporter = injector.getInstance(KeyExporter::class.java)
+            val keys = exporter.exportValid()
+
+            val process = ProcessBuilder("ent")
+                .redirectOutput(ProcessBuilder.Redirect.INHERIT)
+                .redirectError(ProcessBuilder.Redirect.INHERIT)
+                .start()
+
+            DataOutputStream(BufferedOutputStream(process.outputStream)).use { out ->
+                for (key in keys) {
+                    out.writeInt(key.k0)
+                    out.writeInt(key.k1)
+                    out.writeInt(key.k2)
+                    out.writeInt(key.k3)
+                }
+            }
+        }
+    }
+}
diff --git a/archive/src/main/kotlin/org/openrs2/archive/key/KeyCommand.kt b/archive/src/main/kotlin/org/openrs2/archive/key/KeyCommand.kt
index 0efce58f5b..d905a3b862 100644
--- a/archive/src/main/kotlin/org/openrs2/archive/key/KeyCommand.kt
+++ b/archive/src/main/kotlin/org/openrs2/archive/key/KeyCommand.kt
@@ -8,6 +8,7 @@ public class KeyCommand : NoOpCliktCommand(name = "key") {
         subcommands(
             BruteForceCommand(),
             DownloadCommand(),
+            EntCommand(),
             ImportCommand()
         )
     }
diff --git a/archive/src/main/kotlin/org/openrs2/archive/key/KeyExporter.kt b/archive/src/main/kotlin/org/openrs2/archive/key/KeyExporter.kt
new file mode 100644
index 0000000000..10188f06e5
--- /dev/null
+++ b/archive/src/main/kotlin/org/openrs2/archive/key/KeyExporter.kt
@@ -0,0 +1,38 @@
+package org.openrs2.archive.key
+
+import org.openrs2.crypto.XteaKey
+import org.openrs2.db.Database
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+public class KeyExporter @Inject constructor(
+    private val database: Database
+) {
+    public suspend fun exportValid(): List<XteaKey> {
+        return database.execute { connection ->
+            connection.prepareStatement(
+                """
+                SELECT (k.key).k0, (k.key).k1, (k.key).k2, (k.key).k3
+                FROM keys k
+                JOIN containers c ON c.key_id = k.id
+                ORDER BY k.id ASC
+            """.trimIndent()
+            ).use { stmt ->
+                stmt.executeQuery().use { rows ->
+                    val keys = mutableListOf<XteaKey>()
+
+                    while (rows.next()) {
+                        val k0 = rows.getInt(1)
+                        val k1 = rows.getInt(2)
+                        val k2 = rows.getInt(3)
+                        val k3 = rows.getInt(4)
+                        keys += XteaKey(k0, k1, k2, k3)
+                    }
+
+                    keys
+                }
+            }
+        }
+    }
+}