From 6a015d337d6a786adb319c3f9de7b9b7e9ae80bb Mon Sep 17 00:00:00 2001 From: cyberta Date: Tue, 21 Jan 2020 16:10:59 -0600 Subject: implement no-dns fallback using okhttp's Dns interface --- .../se/leap/bitmaskclient/utils/IPAddress.java | 117 +++++++++++++++++++++ 1 file changed, 117 insertions(+) create mode 100644 app/src/main/java/se/leap/bitmaskclient/utils/IPAddress.java (limited to 'app/src/main/java/se/leap/bitmaskclient/utils/IPAddress.java') diff --git a/app/src/main/java/se/leap/bitmaskclient/utils/IPAddress.java b/app/src/main/java/se/leap/bitmaskclient/utils/IPAddress.java new file mode 100644 index 00000000..8b419a2c --- /dev/null +++ b/app/src/main/java/se/leap/bitmaskclient/utils/IPAddress.java @@ -0,0 +1,117 @@ +package se.leap.bitmaskclient.utils; + +/* + * Copyright (C) 2006-2008 Alfresco Software Limited. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + + * As a special exception to the terms and conditions of version 2.0 of + * the GPL, you may redistribute this Program in connection with Free/Libre + * and Open Source Software ("FLOSS") applications as described in Alfresco's + * FLOSS exception. You should have recieved a copy of the text describing + * the FLOSS exception, and it is also available here: + * http://www.alfresco.com/legal/licensing" + */ + +//package net.gqu.utils; + +import java.util.StringTokenizer; + +/** + * TCP/IP Address Utility Class + * + * @author gkspencer + */ +public class IPAddress { + + + /** + * Convert a TCP/IP address string into a byte array + * + * @param addr String + * @return byte[] + */ + public final static byte[] asBytes(String addr) { + + // Convert the TCP/IP address string to an integer value + + int ipInt = parseNumericAddress(addr); + if ( ipInt == 0) + return null; + + // Convert to bytes + + byte[] ipByts = new byte[4]; + + ipByts[3] = (byte) (ipInt & 0xFF); + ipByts[2] = (byte) ((ipInt >> 8) & 0xFF); + ipByts[1] = (byte) ((ipInt >> 16) & 0xFF); + ipByts[0] = (byte) ((ipInt >> 24) & 0xFF); + + // Return the TCP/IP bytes + + return ipByts; + } + /** + * Check if the specified address is a valid numeric TCP/IP address and return as an integer value + * + * @param ipaddr String + * @return int + */ + public final static int parseNumericAddress(String ipaddr) { + + // Check if the string is valid + + if ( ipaddr == null || ipaddr.length() < 7 || ipaddr.length() > 15) + return 0; + + // Check the address string, should be n.n.n.n format + + StringTokenizer token = new StringTokenizer(ipaddr,"."); + if ( token.countTokens() != 4) + return 0; + + int ipInt = 0; + + while ( token.hasMoreTokens()) { + + // Get the current token and convert to an integer value + + String ipNum = token.nextToken(); + + try { + + // Validate the current address part + + int ipVal = Integer.valueOf(ipNum).intValue(); + if ( ipVal < 0 || ipVal > 255) + return 0; + + // Add to the integer address + + ipInt = (ipInt << 8) + ipVal; + } + catch (NumberFormatException ex) { + return 0; + } + } + + // Return the integer address + + return ipInt; + } + + +} \ No newline at end of file -- cgit v1.2.3 From db12765763840d9202b39afd1f69ea0e62925dac Mon Sep 17 00:00:00 2001 From: cyberta Date: Tue, 21 Jan 2020 17:19:38 -0600 Subject: remove lint warnings --- .../se/leap/bitmaskclient/utils/IPAddress.java | 29 ++++++---------------- 1 file changed, 7 insertions(+), 22 deletions(-) (limited to 'app/src/main/java/se/leap/bitmaskclient/utils/IPAddress.java') diff --git a/app/src/main/java/se/leap/bitmaskclient/utils/IPAddress.java b/app/src/main/java/se/leap/bitmaskclient/utils/IPAddress.java index 8b419a2c..2e3ef596 100644 --- a/app/src/main/java/se/leap/bitmaskclient/utils/IPAddress.java +++ b/app/src/main/java/se/leap/bitmaskclient/utils/IPAddress.java @@ -25,8 +25,6 @@ package se.leap.bitmaskclient.utils; * http://www.alfresco.com/legal/licensing" */ -//package net.gqu.utils; - import java.util.StringTokenizer; /** @@ -43,16 +41,14 @@ public class IPAddress { * @param addr String * @return byte[] */ - public final static byte[] asBytes(String addr) { + public static byte[] asBytes(String addr) { // Convert the TCP/IP address string to an integer value - int ipInt = parseNumericAddress(addr); - if ( ipInt == 0) + if (ipInt == 0) return null; // Convert to bytes - byte[] ipByts = new byte[4]; ipByts[3] = (byte) (ipInt & 0xFF); @@ -61,7 +57,6 @@ public class IPAddress { ipByts[0] = (byte) ((ipInt >> 24) & 0xFF); // Return the TCP/IP bytes - return ipByts; } /** @@ -70,37 +65,30 @@ public class IPAddress { * @param ipaddr String * @return int */ - public final static int parseNumericAddress(String ipaddr) { + private static int parseNumericAddress(String ipaddr) { // Check if the string is valid - - if ( ipaddr == null || ipaddr.length() < 7 || ipaddr.length() > 15) + if (ipaddr == null || ipaddr.length() < 7 || ipaddr.length() > 15) return 0; // Check the address string, should be n.n.n.n format - StringTokenizer token = new StringTokenizer(ipaddr,"."); - if ( token.countTokens() != 4) + if (token.countTokens() != 4) return 0; int ipInt = 0; - - while ( token.hasMoreTokens()) { + while (token.hasMoreTokens()) { // Get the current token and convert to an integer value - String ipNum = token.nextToken(); try { - // Validate the current address part - int ipVal = Integer.valueOf(ipNum).intValue(); - if ( ipVal < 0 || ipVal > 255) + if (ipVal < 0 || ipVal > 255) return 0; // Add to the integer address - ipInt = (ipInt << 8) + ipVal; } catch (NumberFormatException ex) { @@ -109,9 +97,6 @@ public class IPAddress { } // Return the integer address - return ipInt; } - - } \ No newline at end of file -- cgit v1.2.3