Add support to authorization basic http header in alternative to cook…

…ie and java session.

Modification to allow traccar api stateless.

src/org/traccar/helper/Authorization.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2015 Anton Tananaev ([email protected])
+ *
+ * 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.helper;
+
+import java.util.Base64;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.StringTokenizer;
+
+public final class Authorization {
+
+    private Authorization() {
+    }
+
+    public static final String HEADER = "Authorization";
+    public static final String SCHEME = "Basic";
+    public static final String REGEX = SCHEME + " ";
+    public static final String REPLACEMENT = "";
+    public static final String TOKENIZER = ":";
+    public static final String USERNAME = "username";
+    public static final String PASSWORD = "password";
+
+    public static Map<String, String> parse(String authorization) {
+        Map<String, String> authMap = new HashMap<>();
+        final String encodedUsernameAndPassword = authorization.replaceFirst(REGEX, REPLACEMENT);
+        String usernameAndPassword = new String(Base64.getDecoder().decode(encodedUsernameAndPassword));
+        final StringTokenizer tokenizer = new StringTokenizer(usernameAndPassword, TOKENIZER);
+        authMap.put(USERNAME, tokenizer.nextToken());
+        authMap.put(PASSWORD, tokenizer.nextToken());
+        return authMap;
+    }
+}

src/org/traccar/web/BaseServlet.java

@@ -20,13 +20,17 @@
 import java.io.IOException;
 import java.io.Writer;
 import java.security.AccessControlException;
+import java.util.Map;
 import javax.json.Json;
 import javax.json.JsonObjectBuilder;
 import javax.json.JsonStructure;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import org.traccar.Context;
+import org.traccar.helper.Authorization;
+import org.traccar.model.User;
 
 public abstract class BaseServlet extends HttpServlet {
 
@@ -57,7 +61,15 @@ protected final void service(
     protected abstract boolean handle(
             String command, HttpServletRequest req, HttpServletResponse resp) throws Exception;
 
-    public long getUserId(HttpServletRequest req) {
+    public long getUserId(HttpServletRequest req) throws Exception  {
+        String authorization = req.getHeader(Authorization.HEADER);
+        if (authorization != null && !authorization.isEmpty()) {
+            Map<String, String> authMap = Authorization.parse(authorization);
+            User user = Context.getDataManager().login(authMap.get(Authorization.USERNAME), authMap.get(Authorization.PASSWORD));
+            if (user != null) {
+                return user.getId();
+            }
+        }
         Long userId = (Long) req.getSession().getAttribute(USER_KEY);
         if (userId == null) {
             throw new AccessControlException("User not logged in");