1 files changed, 95 insertions, 0 deletions
diff --git a/src/org.gluster.storage.management.core/src/org/gluster/storage/management/core/utils/ValidationUtil.java b/src/org.gluster.storage.management.core/src/org/gluster/storage/management/core/utils/ValidationUtil.java
new file mode 100644
index 00000000..55659d3c
--- /dev/null
+++ b/src/org.gluster.storage.management.core/src/org/gluster/storage/management/core/utils/ValidationUtil.java
@@ -0,0 +1,95 @@
+package org.gluster.storage.management.core.utils;
+
+import java.util.regex.Pattern;
+
+public class ValidationUtil {
+
+	// Access control may contains IP with wild card(*), hostname and/or multiple ip/hostnames
+	public static boolean isValidAccessControl(String ac) {
+		String access[] = ac.split(",");
+		String ip;
+		boolean isValidAccessControl = true;
+		for (int i = 0; i < access.length && isValidAccessControl; i++) {
+			ip = access[i].trim();
+			isValidAccessControl = (isValidIpWithWC(ip) || isValidHostName(ip));
+		}
+		return isValidAccessControl;
+	}
+
+	public static String getInvalidIpOrHostname(String ac) {
+		String access[] = ac.split(",");
+		String ip;
+		boolean isValidAccessControl = true;
+		for (int i = 0; i < access.length && isValidAccessControl; i++) {
+			ip = access[i].trim();
+			if (!(isValidIpWithWC(ip) || isValidHostName(ip))) {
+				return access[i];
+			}
+		}
+		return "";
+	}
+	
+	public static boolean isValidIpWithWC(String ip) {
+		String ipAddress[] = ip.split("\\.");
+		boolean isValid = true;
+
+		if (ip.equals("0.0.0.0") || ip.equals("255.255.255.255")) { // Invalidate the special ip's
+			isValid = false;
+		}
+
+		int iterator=ipAddress.length-1;
+		
+		if (ipAddress.length <= 4 && ipAddress[ipAddress.length - 1].equals("*")) {
+			iterator = ipAddress.length - 2;
+		} else if (ipAddress.length < 4 || ipAddress.length > 4 ){
+			isValid = false;
+			iterator = ipAddress.length - 1;
+		}
+
+		for (int i = 0; i <= iterator && isValid; i++) {
+			if (ipAddress[i].equals("*")) {
+				isValid = (i == ipAddress.length - 1) ? isValid : false;
+			} else {
+				isValid = isValidIpQuad(ipAddress[i]);
+			}
+		}
+		return isValid;
+	}
+
+	public static boolean isValidIp(String ip) {
+		String ipAddress[] = ip.split("\\.");
+		boolean isValid = true;
+
+		if (ip.equals("0.0.0.0") || ip.equals("255.255.255.255")) { // Invalidate the special ip's
+			isValid = false;
+		}
+		if (ipAddress.length < 4) {
+			isValid = false;
+		}
+		for (int i = 0; i < ipAddress.length && isValid; i++) {
+			isValid = isValidIpQuad(ipAddress[i]);
+		}
+		return isValid;
+	}
+
+	private static boolean isValidIpQuad(String ipQuad) {
+		Pattern pattern = Pattern.compile("([01]?\\d\\d?|2[0-4]\\d|25[0-5])");
+		return pattern.matcher(ipQuad).matches();
+	}
+
+	public static boolean isValidHostName(String hostName) {
+		Pattern pattern = Pattern
+				.compile("^(([a-zA-Z]|[a-zA-Z][a-zA-Z0-9\\-]*[a-zA-Z0-9])\\.)*([A-Za-z]|[A-Za-z][A-Za-z0-9\\-]*[A-Za-z0-9])$");
+		return pattern.matcher(hostName).matches();
+	}
+
+	public static void main(String[] argv) {
+		String ip = "0.0.0.0";
+		// System.out.println("Is valid ip (" + ip + ")? " + isValidIp(ip));
+		String hostName = "myhost.q";
+		// System.out.println(isValidHostName(hostName));
+		// System.out.println(isValidHostName(hostName));
+		System.out.println(isValidAccessControl(hostName));
+	}
+
+}