3 files changed, 45 insertions, 1 deletions

diff --git a/src/main/java/org/traccar/api/resource/SessionResource.java b/src/main/java/org/traccar/api/resource/SessionResource.java
index fd331c766..e3c5d457f 100644
--- a/src/main/java/org/traccar/api/resource/SessionResource.java
+++ b/src/main/java/org/traccar/api/resource/SessionResource.java
@@ -18,6 +18,7 @@ package org.traccar.api.resource;
 import org.traccar.Context;
 import org.traccar.api.BaseResource;
 import org.traccar.helper.DataConverter;
+import org.traccar.helper.ServletHelper;
 import org.traccar.helper.LogAction;
 import org.traccar.model.User;
 
@@ -106,6 +107,7 @@ public class SessionResource extends BaseResource {
             LogAction.login(user.getId());
             return user;
         } else {
+            LogAction.failedLogin(ServletHelper.retrieveRemoteAddress(request));
             throw new WebApplicationException(Response.status(Response.Status.UNAUTHORIZED).build());
         }
     }
diff --git a/src/main/java/org/traccar/helper/LogAction.java b/src/main/java/org/traccar/helper/LogAction.java
index db13337b8..21fe4c3fa 100644
--- a/src/main/java/org/traccar/helper/LogAction.java
+++ b/src/main/java/org/traccar/helper/LogAction.java
@@ -38,12 +38,14 @@ public final class LogAction {
 
     private static final String ACTION_LOGIN = "login";
     private static final String ACTION_LOGOUT = "logout";
+    private static final String ACTION_FAILED_LOGIN_NO_IP = "Failed Login Attempt. IP address: failed to retrieve";
 
     private static final String ACTION_DEVICE_ACCUMULATORS = "resetDeviceAccumulators";
 
     private static final String PATTERN_OBJECT = "user: %d, action: %s, object: %s, id: %d";
     private static final String PATTERN_LINK = "user: %d, action: %s, owner: %s, id: %d, property: %s, id: %d";
     private static final String PATTERN_LOGIN = "user: %d, action: %s";
+    private static final String PATTERN_FAILED_LOGIN = "Failed Login Attempt. IP address: %s";
     private static final String PATTERN_DEVICE_ACCUMULATORS = "user: %d, action: %s, deviceId: %d";
 
     public static void create(long userId, BaseModel object) {
@@ -74,6 +76,18 @@ public final class LogAction {
         logLoginAction(ACTION_LOGOUT, userId);
     }
 
+    public static void failedLogin(String ipAddress) {
+
+        if (ipAddress == null || ipAddress.isEmpty()) {
+            LOGGER.info(ACTION_FAILED_LOGIN_NO_IP);
+        } else {
+            LOGGER.info(String.format(
+                    PATTERN_FAILED_LOGIN, ipAddress));
+        }
+
+    }
+
+
     public static void resetDeviceAccumulators(long userId, long deviceId) {
         LOGGER.info(String.format(
                 PATTERN_DEVICE_ACCUMULATORS, userId, ACTION_DEVICE_ACCUMULATORS, deviceId));
@@ -85,7 +99,7 @@ public final class LogAction {
     }
 
     private static void logLinkAction(String action, long userId,
-            Class<?> owner, long ownerId, Class<?> property, long propertyId) {
+                                      Class<?> owner, long ownerId, Class<?> property, long propertyId) {
         LOGGER.info(String.format(
                 PATTERN_LINK, userId, action,
                 Introspector.decapitalize(owner.getSimpleName()), ownerId,
diff --git a/src/main/java/org/traccar/helper/ServletHelper.java b/src/main/java/org/traccar/helper/ServletHelper.java
new file mode 100644
index 000000000..f951d17c0
--- /dev/null
+++ b/src/main/java/org/traccar/helper/ServletHelper.java
@@ -0,0 +1,28 @@
+package org.traccar.helper;
+
+import javax.servlet.http.HttpServletRequest;
+
+
+public final class ServletHelper {
+
+
+    private ServletHelper() {
+    }
+
+    public static String retrieveRemoteAddress(HttpServletRequest request) {
+
+        if (request != null) {
+            String ipAddress = request.getHeader("X-FORWARDED-FOR");
+
+            if (ipAddress != null && !ipAddress.isEmpty()) {
+                return ipAddress.substring(0, ipAddress.indexOf(",")); //Removes the additional data
+            } else {
+                ipAddress = request.getRemoteAddr();
+                return ipAddress;
+            }
+
+        } else {
+            return null;
+        }
+    }
+}