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Diffstat (limited to 'core/java/android/net/IpPrefix.java')
| -rw-r--r-- | core/java/android/net/IpPrefix.java | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/core/java/android/net/IpPrefix.java b/core/java/android/net/IpPrefix.java index b268986..6b4f2d5 100644 --- a/core/java/android/net/IpPrefix.java +++ b/core/java/android/net/IpPrefix.java @@ -170,6 +170,21 @@ public final class IpPrefix implements Parcelable { } /** + * Determines whether the prefix contains the specified address. + * + * @param address An {@link InetAddress} to test. + * @return {@code true} if the prefix covers the given address. + */ + public boolean contains(InetAddress address) { + byte[] addrBytes = (address == null) ? null : address.getAddress(); + if (addrBytes == null || addrBytes.length != this.address.length) { + return false; + } + NetworkUtils.maskRawAddress(addrBytes, prefixLength); + return Arrays.equals(this.address, addrBytes); + } + + /** * Returns a string representation of this {@code IpPrefix}. * * @return a string such as {@code "192.0.2.0/24"} or {@code "2001:db8:1:2::/64"}. |