Sanitize all JSON strings

AC-2018-10-9-1, AC-2018-10-9-2, AC-2018-10-9-3, AC-2018-10-9-4

2 files changed, 47 insertions, 0 deletions

diff --git a/src/org/traccar/Context.java b/src/org/traccar/Context.java
index 287e5c753..51c67bd0a 100644
--- a/src/org/traccar/Context.java
+++ b/src/org/traccar/Context.java
@@ -64,6 +64,7 @@ import org.traccar.geocoder.OpenCageGeocoder;
 import org.traccar.geocoder.Geocoder;
 import org.traccar.geolocation.UnwiredGeolocationProvider;
 import org.traccar.helper.Log;
+import org.traccar.helper.SanitizerModule;
 import org.traccar.model.Attribute;
 import org.traccar.model.BaseModel;
 import org.traccar.model.Calendar;
@@ -366,6 +367,7 @@ public final class Context {
         }
 
         objectMapper = new ObjectMapper();
+        objectMapper.registerModule(new SanitizerModule());
         objectMapper.registerModule(new JSR353Module());
         objectMapper.setConfig(
                 objectMapper.getSerializationConfig().without(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS));
diff --git a/src/org/traccar/helper/SanitizerModule.java b/src/org/traccar/helper/SanitizerModule.java
new file mode 100644
index 000000000..af9ac5c2b
--- /dev/null
+++ b/src/org/traccar/helper/SanitizerModule.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2018 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.helper;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+import org.owasp.encoder.Encode;
+
+import java.io.IOException;
+
+public class SanitizerModule extends SimpleModule {
+
+    public static class SanitizerSerializer extends StdSerializer<String> {
+
+        protected SanitizerSerializer() {
+            super(String.class);
+        }
+
+        @Override
+        public void serialize(String value, JsonGenerator gen, SerializerProvider provider) throws IOException {
+            gen.writeString(Encode.forHtml(value));
+        }
+
+    }
+
+    public SanitizerModule() {
+        addSerializer(new SanitizerSerializer());
+    }
+
+}