From 1684c8f398922065a97e7da4dac4ac6a33cc5218 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Parm=C3=A9nides=20GV?= <parmegv@sdf.org>
Date: Wed, 9 Apr 2014 16:03:55 +0200
Subject: Back to the standard "app" module.

This return to "app" instead of "bitmask_android" is due to this reading: https://developer.android.com/sdk/installing/studio-build.html#projectStructure
I'll have to tweak the final apk name in build.gradle.
---
 app/src/main/java/se/leap/openvpn/CIDRIP.java | 58 +++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 app/src/main/java/se/leap/openvpn/CIDRIP.java

(limited to 'app/src/main/java/se/leap/openvpn/CIDRIP.java')

diff --git a/app/src/main/java/se/leap/openvpn/CIDRIP.java b/app/src/main/java/se/leap/openvpn/CIDRIP.java
new file mode 100644
index 00000000..8c4b6709
--- /dev/null
+++ b/app/src/main/java/se/leap/openvpn/CIDRIP.java
@@ -0,0 +1,58 @@
+package se.leap.openvpn;
+
+class CIDRIP{
+	String mIp;
+	int len;
+	public CIDRIP(String ip, String mask){
+		mIp=ip;
+		long netmask=getInt(mask);
+
+		// Add 33. bit to ensure the loop terminates
+		netmask += 1l << 32;
+
+		int lenZeros = 0;
+		while((netmask & 0x1) == 0) {
+			lenZeros++;
+			netmask = netmask >> 1;
+		}
+		// Check if rest of netmask is only 1s
+		if(netmask != (0x1ffffffffl >> lenZeros)) {
+			// Asume no CIDR, set /32
+			len=32;
+		} else {
+			len =32 -lenZeros; 
+		}
+
+	}
+	@Override
+	public String toString() {
+		return String.format("%s/%d",mIp,len);
+	}
+
+	public boolean normalise(){
+		long ip=getInt(mIp);
+
+		long newip = ip & (0xffffffffl << (32 -len));
+		if (newip != ip){
+			mIp = String.format("%d.%d.%d.%d", (newip & 0xff000000) >> 24,(newip & 0xff0000) >> 16, (newip & 0xff00) >> 8 ,newip & 0xff);
+			return true;
+		} else {
+			return false;
+		}
+	}
+	static long getInt(String ipaddr) {
+		String[] ipt = ipaddr.split("\\.");
+		long ip=0;
+
+		ip += Long.parseLong(ipt[0])<< 24;
+		ip += Integer.parseInt(ipt[1])<< 16;
+		ip += Integer.parseInt(ipt[2])<< 8;
+		ip += Integer.parseInt(ipt[3]);
+
+		return ip;
+	}
+	public long getInt() {
+		return getInt(mIp);
+	}
+	
+}
\ No newline at end of file
-- 
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