X-Git-Url: https://git.nmode.ca/signal-cli/blobdiff_plain/5859e7b9f78b5d8963c56c66b75530ee3f094bee..27d9424f1e7f607ac2dfad5b2164d065ffb79ef7:/src/main/java/org/asamk/textsecure/JsonPreKeyStore.java

diff --git a/src/main/java/org/asamk/textsecure/JsonPreKeyStore.java b/src/main/java/org/asamk/textsecure/JsonPreKeyStore.java
new file mode 100644
index 00000000..9688cf3e
--- /dev/null
+++ b/src/main/java/org/asamk/textsecure/JsonPreKeyStore.java
@@ -0,0 +1,97 @@
+package org.asamk.textsecure;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.*;
+import org.whispersystems.libaxolotl.InvalidKeyIdException;
+import org.whispersystems.libaxolotl.state.PreKeyRecord;
+import org.whispersystems.libaxolotl.state.PreKeyStore;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+class JsonPreKeyStore implements PreKeyStore {
+
+    private final Map<Integer, byte[]> store = new HashMap<>();
+
+
+    public JsonPreKeyStore() {
+
+    }
+
+    public void addPreKeys(Map<Integer, byte[]> preKeys) {
+        store.putAll(preKeys);
+    }
+
+    @Override
+    public PreKeyRecord loadPreKey(int preKeyId) throws InvalidKeyIdException {
+        try {
+            if (!store.containsKey(preKeyId)) {
+                throw new InvalidKeyIdException("No such prekeyrecord!");
+            }
+
+            return new PreKeyRecord(store.get(preKeyId));
+        } catch (IOException e) {
+            throw new AssertionError(e);
+        }
+    }
+
+    @Override
+    public void storePreKey(int preKeyId, PreKeyRecord record) {
+        store.put(preKeyId, record.serialize());
+    }
+
+    @Override
+    public boolean containsPreKey(int preKeyId) {
+        return store.containsKey(preKeyId);
+    }
+
+    @Override
+    public void removePreKey(int preKeyId) {
+        store.remove(preKeyId);
+    }
+
+    public static class JsonPreKeyStoreDeserializer extends JsonDeserializer<JsonPreKeyStore> {
+
+        @Override
+        public JsonPreKeyStore deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
+            JsonNode node = jsonParser.getCodec().readTree(jsonParser);
+
+
+            Map<Integer, byte[]> preKeyMap = new HashMap<>();
+            if (node.isArray()) {
+                for (JsonNode preKey : node) {
+                    Integer preKeyId = preKey.get("id").asInt();
+                    try {
+                        preKeyMap.put(preKeyId, Base64.decode(preKey.get("record").asText()));
+                    } catch (IOException e) {
+                        System.out.println(String.format("Error while decoding prekey for: %s", preKeyId));
+                    }
+                }
+            }
+
+            JsonPreKeyStore keyStore = new JsonPreKeyStore();
+            keyStore.addPreKeys(preKeyMap);
+
+            return keyStore;
+
+        }
+    }
+
+    public static class JsonPreKeyStoreSerializer extends JsonSerializer<JsonPreKeyStore> {
+
+        @Override
+        public void serialize(JsonPreKeyStore jsonPreKeyStore, JsonGenerator json, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
+            json.writeStartArray();
+            for (Map.Entry<Integer, byte[]> preKey : jsonPreKeyStore.store.entrySet()) {
+                json.writeStartObject();
+                json.writeNumberField("id", preKey.getKey());
+                json.writeStringField("record", Base64.encodeBytes(preKey.getValue()));
+                json.writeEndObject();
+            }
+            json.writeEndArray();
+        }
+    }
+}