Merge branch 'traccar:master' into master

3 files changed, 224 insertions, 0 deletions

diff --git a/src/main/java/org/traccar/api/signature/CryptoManager.java b/src/main/java/org/traccar/api/signature/CryptoManager.java
new file mode 100644
index 000000000..71f56e0fb
--- /dev/null
+++ b/src/main/java/org/traccar/api/signature/CryptoManager.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2022 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.api.signature;
+
+import org.traccar.storage.Storage;
+import org.traccar.storage.StorageException;
+import org.traccar.storage.query.Columns;
+import org.traccar.storage.query.Request;
+
+import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
+import java.security.GeneralSecurityException;
+import java.security.KeyFactory;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.PrivateKey;
+import java.security.PublicKey;
+import java.security.SecureRandom;
+import java.security.Signature;
+import java.security.spec.ECGenParameterSpec;
+import java.security.spec.PKCS8EncodedKeySpec;
+import java.security.spec.X509EncodedKeySpec;
+
+@Singleton
+public class CryptoManager {
+
+    private final Storage storage;
+
+    private PublicKey publicKey;
+    private PrivateKey privateKey;
+
+    @Inject
+    public CryptoManager(Storage storage) {
+        this.storage = storage;
+    }
+
+    public byte[] sign(byte[] data) throws GeneralSecurityException, StorageException {
+        if (privateKey == null) {
+            initializeKeys();
+        }
+        Signature signature = Signature.getInstance("SHA256withECDSA");
+        signature.initSign(privateKey);
+        signature.update(data);
+        byte[] block = signature.sign();
+        byte[] combined = new byte[1 + block.length + data.length];
+        combined[0] = (byte) block.length;
+        System.arraycopy(block, 0, combined, 1, block.length);
+        System.arraycopy(data, 0, combined, 1 + block.length, data.length);
+        return combined;
+    }
+
+    public byte[] verify(byte[] data) throws GeneralSecurityException, StorageException {
+        if (publicKey == null) {
+            initializeKeys();
+        }
+        Signature signature = Signature.getInstance("SHA256withECDSA");
+        signature.initVerify(publicKey);
+        int length = data[0];
+        byte[] originalData = new byte[data.length - 1 - length];
+        System.arraycopy(data, 1 + length, originalData, 0, originalData.length);
+        signature.update(originalData);
+        if (!signature.verify(data, 1, length)) {
+            throw new SecurityException("Invalid signature");
+        }
+        return originalData;
+    }
+
+    private void initializeKeys() throws StorageException, GeneralSecurityException {
+        KeystoreModel model = storage.getObject(KeystoreModel.class, new Request(new Columns.All()));
+        if (model != null) {
+            publicKey = KeyFactory.getInstance("EC")
+                    .generatePublic(new X509EncodedKeySpec(model.getPublicKey()));
+            privateKey = KeyFactory.getInstance("EC")
+                    .generatePrivate(new PKCS8EncodedKeySpec(model.getPrivateKey()));
+        } else {
+            KeyPairGenerator generator = KeyPairGenerator.getInstance("EC");
+            generator.initialize(new ECGenParameterSpec("secp256r1"), new SecureRandom());
+            KeyPair pair = generator.generateKeyPair();
+
+            publicKey = pair.getPublic();
+            privateKey = pair.getPrivate();
+
+            model = new KeystoreModel();
+            model.setPublicKey(publicKey.getEncoded());
+            model.setPrivateKey(privateKey.getEncoded());
+            storage.addObject(model, new Request(new Columns.Exclude("id")));
+        }
+    }
+
+}
diff --git a/src/main/java/org/traccar/api/signature/KeystoreModel.java b/src/main/java/org/traccar/api/signature/KeystoreModel.java
new file mode 100644
index 000000000..7f3140e81
--- /dev/null
+++ b/src/main/java/org/traccar/api/signature/KeystoreModel.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2022 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.api.signature;
+
+import org.traccar.model.BaseModel;
+import org.traccar.storage.StorageName;
+
+@StorageName("tc_keystore")
+public class KeystoreModel extends BaseModel {
+
+    private byte[] publicKey;
+
+    public byte[] getPublicKey() {
+        return publicKey;
+    }
+
+    public void setPublicKey(byte[] publicKey) {
+        this.publicKey = publicKey;
+    }
+
+    private byte[] privateKey;
+
+    public byte[] getPrivateKey() {
+        return privateKey;
+    }
+
+    public void setPrivateKey(byte[] privateKey) {
+        this.privateKey = privateKey;
+    }
+
+}
diff --git a/src/main/java/org/traccar/api/signature/TokenManager.java b/src/main/java/org/traccar/api/signature/TokenManager.java
new file mode 100644
index 000000000..3019e12b9
--- /dev/null
+++ b/src/main/java/org/traccar/api/signature/TokenManager.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2022 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.api.signature;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.commons.codec.binary.Base64;
+import org.traccar.storage.StorageException;
+
+import jakarta.inject.Inject;
+import jakarta.inject.Singleton;
+import java.io.IOException;
+import java.security.GeneralSecurityException;
+import java.util.Date;
+import java.util.concurrent.TimeUnit;
+
+@Singleton
+public class TokenManager {
+
+    private static final int DEFAULT_EXPIRATION_DAYS = 7;
+
+    private final ObjectMapper objectMapper;
+    private final CryptoManager cryptoManager;
+
+    public static class Data {
+        @JsonProperty("u")
+        private long userId;
+        @JsonProperty("e")
+        private Date expiration;
+    }
+
+    @Inject
+    public TokenManager(ObjectMapper objectMapper, CryptoManager cryptoManager) {
+        this.objectMapper = objectMapper;
+        this.cryptoManager = cryptoManager;
+    }
+
+    public String generateToken(long userId) throws IOException, GeneralSecurityException, StorageException {
+        return generateToken(userId, null);
+    }
+
+    public String generateToken(
+            long userId, Date expiration) throws IOException, GeneralSecurityException, StorageException {
+        Data data = new Data();
+        data.userId = userId;
+        if (expiration != null) {
+            data.expiration = expiration;
+        } else {
+            data.expiration = new Date(System.currentTimeMillis() + TimeUnit.DAYS.toMillis(DEFAULT_EXPIRATION_DAYS));
+        }
+        byte[] encoded = objectMapper.writeValueAsBytes(data);
+        return Base64.encodeBase64URLSafeString(cryptoManager.sign(encoded));
+    }
+
+    public long verifyToken(String token) throws IOException, GeneralSecurityException, StorageException {
+        byte[] encoded = cryptoManager.verify(Base64.decodeBase64(token));
+        Data data = objectMapper.readValue(encoded, Data.class);
+        if (data.expiration.before(new Date())) {
+            throw new SecurityException("Token has expired");
+        }
+        return data.userId;
+    }
+
+}