From dfde473ef88f8be7873385b1ff3357c1f79afe73 Mon Sep 17 00:00:00 2001
From: Andreas Fitzek <andreas.fitzek@iaik.tugraz.at>
Date: Thu, 26 Mar 2015 10:04:08 +0100
Subject: added Whitelist for external configuration overwrites

---
 .../pdfas/web/helper/ConfigurationOverwrite.java   | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/helper/ConfigurationOverwrite.java

(limited to 'pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/helper/ConfigurationOverwrite.java')

diff --git a/pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/helper/ConfigurationOverwrite.java b/pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/helper/ConfigurationOverwrite.java
new file mode 100644
index 00000000..3bf20bf4
--- /dev/null
+++ b/pdf-as-web/src/main/java/at/gv/egiz/pdfas/web/helper/ConfigurationOverwrite.java
@@ -0,0 +1,35 @@
+package at.gv.egiz.pdfas.web.helper;
+
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.gv.egiz.pdfas.lib.api.Configuration;
+import at.gv.egiz.pdfas.web.config.WebConfiguration;
+
+public class ConfigurationOverwrite {
+
+	private static final Logger logger = LoggerFactory
+			.getLogger(ConfigurationOverwrite.class);
+
+	public static void overwriteConfiguration(Map<String, String> overwrite,
+			Configuration config) {
+		if (WebConfiguration.isAllowExtOverwrite() && overwrite != null && config != null) {
+			Iterator<Entry<String, String>> entryIt = overwrite.entrySet()
+					.iterator();
+			while (entryIt.hasNext()) {
+				Entry<String, String> entry = entryIt.next();
+				if (WebConfiguration.isOverwriteAllowed(entry.getKey())) {
+					config.setValue(entry.getKey(), entry.getValue());
+				} else {
+					logger.warn(
+							"External component tried to overwrite cfg {}. This is not in the whitelist!",
+							entry.getKey());
+				}
+			}
+		}
+	}
+}
-- 
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