diff options
| author | Christian Schneppe <christian@pix-art.de> | 2017-06-24 09:52:45 +0200 |
|---|---|---|
| committer | Christian Schneppe <christian@pix-art.de> | 2017-06-24 09:52:45 +0200 |
| commit | 356c7bec9c2900242b16d99968cdcd78e674dee9 (patch) | |
| tree | c44021992d825db96fcc4f84400cd63cc8d16450 /src/main/java/de/pixart/messenger/utils/IP.java | |
| parent | 8e897c3d69d65155a2fa7a4ce75bfc5bc13d7233 (diff) | |
upgrade minidns. refactored dns utils
Diffstat (limited to 'src/main/java/de/pixart/messenger/utils/IP.java')
| -rw-r--r-- | src/main/java/de/pixart/messenger/utils/IP.java | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/main/java/de/pixart/messenger/utils/IP.java b/src/main/java/de/pixart/messenger/utils/IP.java new file mode 100644 index 000000000..42f9ec553 --- /dev/null +++ b/src/main/java/de/pixart/messenger/utils/IP.java @@ -0,0 +1,22 @@ +package de.pixart.messenger.utils; + +import java.util.regex.Pattern; + +public class IP { + + private static final Pattern PATTERN_IPV4 = Pattern.compile("\\A(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z"); + private static final Pattern PATTERN_IPV6_HEX4DECCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) ::((?:[0-9A-Fa-f]{1,4}:)*)(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z"); + private static final Pattern PATTERN_IPV6_6HEX4DEC = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}:){6,6})(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}\\z"); + private static final Pattern PATTERN_IPV6_HEXCOMPRESSED = Pattern.compile("\\A((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)\\z"); + private static final Pattern PATTERN_IPV6 = Pattern.compile("\\A(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}\\z"); + + public static boolean matches(String server) { + return server != null && ( + PATTERN_IPV4.matcher(server).matches() + || PATTERN_IPV6.matcher(server).matches() + || PATTERN_IPV6_6HEX4DEC.matcher(server).matches() + || PATTERN_IPV6_HEX4DECCOMPRESSED.matcher(server).matches() + || PATTERN_IPV6_HEXCOMPRESSED.matcher(server).matches()); + } + +}
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