Add API endpoint for receiving keys

Keys are now initially imported into a key_queue table, which is never
locked exclusively - allowing the API endpoint to function while the
brute forcer is running. The brute forcer moves all pending keys in the
queue to the keys table before running the actual brute forcing.

Signed-off-by: Graham <gpe@openrs2.org>

archive/src/main/kotlin/org/openrs2/archive/key/JsonKeyDownloader.kt

@@ -12,9 +12,10 @@ import java.net.http.HttpResponse
 import java.time.Duration
 
 public abstract class JsonKeyDownloader(
+    source: KeySource,
     private val client: HttpClient,
     private val jsonKeyReader: JsonKeyReader
-) : KeyDownloader {
+) : KeyDownloader(source) {
     override suspend fun download(url: String): Sequence<XteaKey> {
         val request = HttpRequest.newBuilder(URI(url))
             .GET()

archive/src/main/kotlin/org/openrs2/archive/key/KeyBruteForcer.kt

@@ -22,6 +22,88 @@ public class KeyBruteForcer @Inject constructor(
         val uncompressedChecksum: Int
     )
 
+    /*
+     * Copy XTEA keys from key_queue to keys. The queue exists so that we don't
+     * block the /keys API endpoint from working while the brute forcer is
+     * running.
+     *
+     * This has to be a different transaction as it needs to lock the keys
+     * table in EXCLUSIVE mode, but we want to downgrade that to SHARE mode as
+     * soon as possible. Locks can only be released on commit in Postgres.
+     */
+    private suspend fun assignKeyIds() {
+        database.execute { connection ->
+            connection.prepareStatement(
+                """
+                LOCK TABLE keys IN EXCLUSIVE MODE
+            """.trimIndent()
+            ).use { stmt ->
+                stmt.execute()
+            }
+
+            connection.prepareStatement(
+                """
+                CREATE TEMPORARY TABLE tmp_keys (
+                    key xtea_key NOT NULL,
+                    source key_source NOT NULL,
+                    first_seen TIMESTAMPTZ NOT NULL,
+                    last_seen TIMESTAMPTZ NOT NULL
+                ) ON COMMIT DROP
+            """.trimIndent()
+            ).use { stmt ->
+                stmt.execute()
+            }
+
+            connection.prepareStatement(
+                """
+                INSERT INTO tmp_keys (key, source, first_seen, last_seen)
+                SELECT key, source, first_seen, last_seen
+                FROM key_queue
+                FOR UPDATE SKIP LOCKED
+            """.trimIndent()
+            ).use { stmt ->
+                stmt.execute()
+            }
+
+            connection.prepareStatement(
+                """
+                INSERT INTO keys (key)
+                SELECT t.key
+                FROM tmp_keys t
+                LEFT JOIN keys k ON k.key = t.key
+                WHERE k.key IS NULL
+                ON CONFLICT DO NOTHING
+            """.trimIndent()
+            ).use { stmt ->
+                stmt.execute()
+            }
+
+            connection.prepareStatement(
+                """
+                INSERT INTO key_sources AS s (key_id, source, first_seen, last_seen)
+                SELECT k.id, t.source, t.first_seen, t.last_seen
+                FROM tmp_keys t
+                JOIN keys k ON k.key = t.key
+                ON CONFLICT (key_id, source) DO UPDATE SET
+                    first_seen = LEAST(s.first_seen, EXCLUDED.first_seen),
+                    last_seen = GREATEST(s.last_seen, EXCLUDED.last_seen)
+            """.trimIndent()
+            ).use { stmt ->
+                stmt.execute()
+            }
+
+            connection.prepareStatement(
+                """
+                DELETE FROM key_queue k
+                USING tmp_keys t
+                WHERE k.key = t.key AND k.source = t.source
+            """.trimIndent()
+            ).use { stmt ->
+                stmt.execute()
+            }
+        }
+    }
+
     /*
      * The code for writing to the containers and keys tables ensures that the
      * row IDs are allocated monotonically (by forbidding any other
@@ -64,6 +146,8 @@ public class KeyBruteForcer @Inject constructor(
      * from the tables.
      */
     public suspend fun bruteForce() {
+        assignKeyIds()
+
         database.execute { connection ->
             connection.prepareStatement(
                 """

archive/src/main/kotlin/org/openrs2/archive/key/KeyDownloader.kt

@@ -2,7 +2,9 @@ package org.openrs2.archive.key
 
 import org.openrs2.crypto.XteaKey
 
-public interface KeyDownloader {
-    public suspend fun getMissingUrls(seenUrls: Set<String>): Set<String>
-    public suspend fun download(url: String): Sequence<XteaKey>
+public abstract class KeyDownloader(
+    public val source: KeySource
+) {
+    public abstract suspend fun getMissingUrls(seenUrls: Set<String>): Set<String>
+    public abstract suspend fun download(url: String): Sequence<XteaKey>
 }

archive/src/main/kotlin/org/openrs2/archive/key/KeyImporter.kt

@@ -6,6 +6,9 @@ import org.openrs2.db.Database
 import java.nio.file.Files
 import java.nio.file.Path
 import java.sql.Connection
+import java.sql.Types
+import java.time.Instant
+import java.time.ZoneOffset
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -15,6 +18,8 @@ public class KeyImporter @Inject constructor(
     private val jsonKeyReader: JsonKeyReader,
     private val downloaders: Set<KeyDownloader>
 ) {
+    private data class Key(val key: XteaKey, val source: KeySource)
+
     public suspend fun import(path: Path) {
         val keys = mutableSetOf<XteaKey>()
 
@@ -43,10 +48,12 @@ public class KeyImporter @Inject constructor(
 
         logger.info { "Importing ${keys.size} keys" }
 
-        import(keys)
+        import(keys, KeySource.DISK)
     }
 
     public suspend fun download() {
+        val now = Instant.now()
+
         val seenUrls = database.execute { connection ->
             connection.prepareStatement(
                 """
@@ -63,12 +70,14 @@ public class KeyImporter @Inject constructor(
             }
         }
 
-        val keys = mutableSetOf<XteaKey>()
+        val keys = mutableSetOf<Key>()
         val urls = mutableSetOf<String>()
 
         for (downloader in downloaders) {
             for (url in downloader.getMissingUrls(seenUrls)) {
-                keys += downloader.download(url)
+                keys += downloader.download(url).map { key ->
+                    Key(key, downloader.source)
+                }
                 urls += url
             }
         }
@@ -89,68 +98,49 @@ public class KeyImporter @Inject constructor(
                 stmt.executeBatch()
             }
 
-            import(connection, keys)
+            import(connection, keys, now)
         }
     }
 
-    public suspend fun import(keys: Iterable<XteaKey>) {
+    public suspend fun import(keys: Iterable<XteaKey>, source: KeySource) {
+        val now = Instant.now()
+
         database.execute { connection ->
-            import(connection, keys)
+            import(connection, keys.map { key ->
+                Key(key, source)
+            }, now)
         }
     }
 
-    private fun import(connection: Connection, keys: Iterable<XteaKey>) {
-        connection.prepareStatement(
-            """
-            LOCK TABLE keys IN EXCLUSIVE MODE
-        """.trimIndent()
-        ).use { stmt ->
-            stmt.execute()
-        }
+    private fun import(connection: Connection, keys: Iterable<Key>, now: Instant) {
+        val timestamp = now.atOffset(ZoneOffset.UTC)
 
         connection.prepareStatement(
             """
-            CREATE TEMPORARY TABLE tmp_keys (
-                key xtea_key PRIMARY KEY NOT NULL
-            ) ON COMMIT DROP
-        """.trimIndent()
-        ).use { stmt ->
-            stmt.execute()
-        }
-
-        connection.prepareStatement(
-            """
-            INSERT INTO tmp_keys (key)
-            VALUES (ROW(?, ?, ?, ?))
+            INSERT INTO key_queue AS K (key, source, first_seen, last_seen)
+            VALUES (ROW(?, ?, ?, ?), ?::key_source, ?, ?)
+            ON CONFLICT (key, source) DO UPDATE SET
+                first_seen = LEAST(k.first_seen, EXCLUDED.first_seen),
+                last_seen = GREATEST(k.last_seen, EXCLUDED.last_seen)
         """.trimIndent()
         ).use { stmt ->
             for (key in keys) {
-                if (key.isZero) {
+                if (key.key.isZero) {
                     continue
                 }
 
-                stmt.setInt(1, key.k0)
-                stmt.setInt(2, key.k1)
-                stmt.setInt(3, key.k2)
-                stmt.setInt(4, key.k3)
+                stmt.setInt(1, key.key.k0)
+                stmt.setInt(2, key.key.k1)
+                stmt.setInt(3, key.key.k2)
+                stmt.setInt(4, key.key.k3)
+                stmt.setString(5, key.source.name.lowercase())
+                stmt.setObject(6, timestamp, Types.TIMESTAMP_WITH_TIMEZONE)
+                stmt.setObject(7, timestamp, Types.TIMESTAMP_WITH_TIMEZONE)
                 stmt.addBatch()
             }
 
             stmt.executeBatch()
         }
-
-        connection.prepareStatement(
-            """
-            INSERT INTO keys (key)
-            SELECT t.key
-            FROM tmp_keys t
-            LEFT JOIN keys k ON k.key = t.key
-            WHERE k.key IS NULL
-            ON CONFLICT DO NOTHING
-        """.trimIndent()
-        ).use { stmt ->
-            stmt.execute()
-        }
     }
 
     private companion object {

archive/src/main/kotlin/org/openrs2/archive/key/KeySource.kt

@@ -0,0 +1,9 @@
+package org.openrs2.archive.key
+
+public enum class KeySource {
+    API,
+    DISK,
+    OPENOSRS,
+    POLAR,
+    RUNELITE
+}

archive/src/main/kotlin/org/openrs2/archive/key/OpenOsrsKeyDownloader.kt

@@ -8,7 +8,7 @@ import javax.inject.Singleton
 public class OpenOsrsKeyDownloader @Inject constructor(
     client: HttpClient,
     jsonKeyReader: JsonKeyReader
-) : JsonKeyDownloader(client, jsonKeyReader) {
+) : JsonKeyDownloader(KeySource.OPENOSRS, client, jsonKeyReader) {
     override suspend fun getMissingUrls(seenUrls: Set<String>): Set<String> {
         return setOf(ENDPOINT)
     }

archive/src/main/kotlin/org/openrs2/archive/key/PolarKeyDownloader.kt

@@ -18,7 +18,7 @@ import javax.inject.Singleton
 public class PolarKeyDownloader @Inject constructor(
     private val client: HttpClient,
     jsonKeyReader: JsonKeyReader
-) : JsonKeyDownloader(client, jsonKeyReader) {
+) : JsonKeyDownloader(KeySource.POLAR, client, jsonKeyReader) {
     override suspend fun getMissingUrls(seenUrls: Set<String>): Set<String> {
         val request = HttpRequest.newBuilder(ENDPOINT)
             .GET()

archive/src/main/kotlin/org/openrs2/archive/key/RuneLiteKeyDownloader.kt

@@ -17,7 +17,7 @@ import javax.inject.Singleton
 public class RuneLiteKeyDownloader @Inject constructor(
     private val client: HttpClient,
     jsonKeyReader: JsonKeyReader
-) : JsonKeyDownloader(client, jsonKeyReader) {
+) : JsonKeyDownloader(KeySource.RUNELITE, client, jsonKeyReader) {
     override suspend fun getMissingUrls(seenUrls: Set<String>): Set<String> {
         val version = getVersion()
         return setOf(getXteaEndpoint(version))

archive/src/main/kotlin/org/openrs2/archive/web/KeysController.kt

@@ -1,14 +1,20 @@
 package org.openrs2.archive.web
 
 import io.ktor.application.ApplicationCall
+import io.ktor.http.HttpStatusCode
+import io.ktor.request.receive
 import io.ktor.response.respond
 import io.ktor.thymeleaf.ThymeleafContent
 import org.openrs2.archive.key.KeyExporter
+import org.openrs2.archive.key.KeyImporter
+import org.openrs2.archive.key.KeySource
+import org.openrs2.crypto.XteaKey
 import javax.inject.Inject
 import javax.inject.Singleton
 
 @Singleton
 public class KeysController @Inject constructor(
+    private val importer: KeyImporter,
     private val exporter: KeyExporter
 ) {
     public suspend fun index(call: ApplicationCall) {
@@ -17,6 +23,16 @@ public class KeysController @Inject constructor(
         call.respond(ThymeleafContent("keys/index.html", mapOf("stats" to stats, "analysis" to analysis)))
     }
 
+    public suspend fun import(call: ApplicationCall) {
+        val keys = call.receive<Array<IntArray>>().mapTo(mutableSetOf(), XteaKey::fromIntArray)
+
+        if (keys.isNotEmpty()) {
+            importer.import(keys, KeySource.API)
+        }
+
+        call.respond(HttpStatusCode.NoContent)
+    }
+
     public suspend fun exportAll(call: ApplicationCall) {
         call.respond(exporter.exportAll())
     }

archive/src/main/kotlin/org/openrs2/archive/web/WebServer.kt

@@ -13,6 +13,7 @@ import io.ktor.jackson.JacksonConverter
 import io.ktor.response.respond
 import io.ktor.response.respondRedirect
 import io.ktor.routing.get
+import io.ktor.routing.post
 import io.ktor.routing.routing
 import io.ktor.server.cio.CIO
 import io.ktor.server.engine.embeddedServer
@@ -83,6 +84,7 @@ public class WebServer @Inject constructor(
                 get("/caches/{id}/keys.zip") { cachesController.exportKeysZip(call) }
                 get("/caches/{id}/map.png") { cachesController.renderMap(call) }
                 get("/keys") { keysController.index(call) }
+                post("/keys") { keysController.import(call) }
                 get("/keys/all.json") { keysController.exportAll(call) }
                 get("/keys/valid.json") { keysController.exportValid(call) }
                 static("/static") { resources("/org/openrs2/archive/static") }

archive/src/main/resources/org/openrs2/archive/migrations/V11__keys.sql

@@ -0,0 +1,24 @@
+-- @formatter:off
+CREATE TYPE key_source AS ENUM (
+    'api',
+    'disk',
+    'openosrs',
+    'polar',
+    'runelite'
+);
+
+CREATE TABLE key_sources (
+    key_id BIGINT NOT NULL REFERENCES keys (id),
+    source key_source NOT NULL,
+    first_seen TIMESTAMPTZ NOT NULL,
+    last_seen TIMESTAMPTZ NOT NULL,
+    PRIMARY KEY (key_id, source)
+);
+
+CREATE TABLE key_queue (
+    key xtea_key NOT NULL,
+    source key_source NOT NULL,
+    first_seen TIMESTAMPTZ NOT NULL,
+    last_seen TIMESTAMPTZ NOT NULL,
+    PRIMARY KEY (key, source)
+);