From adc613d8011af7c508050badb1272e8326554c39 Mon Sep 17 00:00:00 2001
From: Harsh Shandilya <me@msfjarvis.dev>
Date: Mon, 9 Mar 2020 19:00:14 +0530
Subject: Migrate tunnel related classes to tunnel/ Gradle module

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>
---
 .../java/com/wireguard/config/InetAddresses.java   | 71 ++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 tunnel/src/main/java/com/wireguard/config/InetAddresses.java

(limited to 'tunnel/src/main/java/com/wireguard/config/InetAddresses.java')

diff --git a/tunnel/src/main/java/com/wireguard/config/InetAddresses.java b/tunnel/src/main/java/com/wireguard/config/InetAddresses.java
new file mode 100644
index 00000000..5303e27f
--- /dev/null
+++ b/tunnel/src/main/java/com/wireguard/config/InetAddresses.java
@@ -0,0 +1,71 @@
+/*
+ * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package com.wireguard.config;
+
+import java.lang.reflect.Method;
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.regex.Pattern;
+
+import javax.annotation.Nullable;
+
+/**
+ * Utility methods for creating instances of {@link InetAddress}.
+ */
+public final class InetAddresses {
+    @Nullable private static final Method PARSER_METHOD;
+    private static final Pattern WONT_TOUCH_RESOLVER = Pattern.compile("^(((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:)))(%.+)?)|((?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))$");
+
+    static {
+        Method m = null;
+        try {
+            if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.Q)
+                // noinspection JavaReflectionMemberAccess
+                m = InetAddress.class.getMethod("parseNumericAddress", String.class);
+        } catch (final Exception ignored) {
+        }
+        PARSER_METHOD = m;
+    }
+
+    private InetAddresses() { }
+
+    /**
+     * Parses a numeric IPv4 or IPv6 address without performing any DNS lookups.
+     *
+     * @param address a string representing the IP address
+     * @return an instance of {@link Inet4Address} or {@link Inet6Address}, as appropriate
+     */
+    public static InetAddress parse(final String address) throws ParseException {
+        if (address.isEmpty())
+            throw new ParseException(InetAddress.class, address, "Empty address");
+        try {
+            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.Q)
+                return android.net.InetAddresses.parseNumericAddress(address);
+            else if (PARSER_METHOD != null)
+                return (InetAddress) PARSER_METHOD.invoke(null, address);
+            else
+                throw new NoSuchMethodException("parseNumericAddress");
+        } catch (final IllegalArgumentException e) {
+            throw new ParseException(InetAddress.class, address, e);
+        } catch (final Exception e) {
+            final Throwable cause = e.getCause();
+            // Re-throw parsing exceptions with the original type, as callers might try to catch
+            // them. On the other hand, callers cannot be expected to handle reflection failures.
+            if (cause instanceof IllegalArgumentException)
+                throw new ParseException(InetAddress.class, address, cause);
+            try {
+                if (WONT_TOUCH_RESOLVER.matcher(address).matches())
+                    return InetAddress.getByName(address);
+                else
+                    throw new ParseException(InetAddress.class, address, "Not an IP address");
+            } catch (final UnknownHostException f) {
+                throw new ParseException(InetAddress.class, address, f);
+            }
+        }
+    }
+}
-- 
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