1 files changed, 56 insertions, 0 deletions
diff --git a/examples/SimpleVerifier.java b/examples/SimpleVerifier.java
new file mode 100644
index 0000000..6ce67a2
--- /dev/null
+++ b/examples/SimpleVerifier.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2006-2011 Christian Plattner. All rights reserved.
+ * Please refer to the LICENSE.txt for licensing details.
+ */
+import ch.ethz.ssh2.KnownHosts;
+import ch.ethz.ssh2.ServerHostKeyVerifier;
+
+class SimpleVerifier implements ServerHostKeyVerifier
+{
+	KnownHosts database;
+
+	/*
+	 * This class is being used by the UsingKnownHosts.java example.
+	 */
+	
+	public SimpleVerifier(KnownHosts database)
+	{
+		if (database == null)
+			throw new IllegalArgumentException();
+
+		this.database = database;
+	}
+
+	public boolean verifyServerHostKey(String hostname, int port, String serverHostKeyAlgorithm, byte[] serverHostKey)
+			throws Exception
+	{
+		int result = database.verifyHostkey(hostname, serverHostKeyAlgorithm, serverHostKey);
+
+		switch (result)
+		{
+		case KnownHosts.HOSTKEY_IS_OK:
+
+			return true; // We are happy
+
+		case KnownHosts.HOSTKEY_IS_NEW:
+
+			// Unknown host? Blindly accept the key and put it into the cache.
+			// Well, you definitely can do better (e.g., ask the user).
+
+			// The following call will ONLY put the key into the memory cache!
+			// To save it in a known hosts file, also call "KnownHosts.addHostkeyToFile(...)"
+			database.addHostkey(new String[] { hostname }, serverHostKeyAlgorithm, serverHostKey);
+
+			return true;
+
+		case KnownHosts.HOSTKEY_HAS_CHANGED:
+
+			// Close the connection if the hostkey has changed.
+			// Better: ask user and add new key to database.
+			return false;
+
+		default:
+			throw new IllegalStateException();
+		}
+	}
+}
+\ No newline at end of file