X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=datarouter-node%2Fsrc%2Fmain%2Fjava%2Forg%2Fonap%2Fdmaap%2Fdatarouter%2Fnode%2FSubnetMatcher.java;fp=datarouter-node%2Fsrc%2Fmain%2Fjava%2Forg%2Fonap%2Fdmaap%2Fdatarouter%2Fnode%2FSubnetMatcher.java;h=2e83e222b4bf9733c19a08e31047c5c7afa49ddd;hb=1841cb5d8da7b21996f8faad9d24f858e6ce8a41;hp=f353d513020644ed5cadd422dab54a8347f2fe2d;hpb=4261823d84c2b911b68cdf4cb4dc3be429ebe285;p=dmaap%2Fdatarouter.git diff --git a/datarouter-node/src/main/java/org/onap/dmaap/datarouter/node/SubnetMatcher.java b/datarouter-node/src/main/java/org/onap/dmaap/datarouter/node/SubnetMatcher.java index f353d513..2e83e222 100644 --- a/datarouter-node/src/main/java/org/onap/dmaap/datarouter/node/SubnetMatcher.java +++ b/datarouter-node/src/main/java/org/onap/dmaap/datarouter/node/SubnetMatcher.java @@ -1,71 +1,75 @@ -/******************************************************************************* - * ============LICENSE_START================================================== - * * org.onap.dmaap - * * =========================================================================== - * * Copyright © 2017 AT&T Intellectual Property. All rights reserved. - * * =========================================================================== - * * Licensed under the Apache License, Version 2.0 (the "License"); - * * you may not use this file except in compliance with the License. - * * You may obtain a copy of the License at - * * - * * http://www.apache.org/licenses/LICENSE-2.0 - * * - * * Unless required by applicable law or agreed to in writing, software - * * distributed under the License is distributed on an "AS IS" BASIS, - * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * * See the License for the specific language governing permissions and - * * limitations under the License. - * * ============LICENSE_END==================================================== - * * - * * ECOMP is a trademark and service mark of AT&T Intellectual Property. - * * - ******************************************************************************/ - - -package org.onap.dmaap.datarouter.node; - -import java.net.*; - -/** - * Compare IP addresses as byte arrays to a subnet specified as a CIDR - */ -public class SubnetMatcher { - private byte[] sn; - private int len; - private int mask; - /** - * Construct a subnet matcher given a CIDR - * @param subnet The CIDR to match - */ - public SubnetMatcher(String subnet) { - int i = subnet.lastIndexOf('/'); - if (i == -1) { - sn = NodeUtils.getInetAddress(subnet); - len = sn.length; - } else { - len = Integer.parseInt(subnet.substring(i + 1)); - sn = NodeUtils.getInetAddress(subnet.substring(0, i)); - mask = ((0xff00) >> (len % 8)) & 0xff; - len /= 8; - } - } - /** - * Is the IP address in the CIDR? - * @param addr the IP address as bytes in network byte order - * @return true if the IP address matches. - */ - public boolean matches(byte[] addr) { - if (addr.length != sn.length) { - return(false); - } - for (int i = 0; i < len; i++) { - if (addr[i] != sn[i]) { - return(false); - } - } - if (mask != 0 && ((addr[len] ^ sn[len]) & mask) != 0) { - return(false); - } - return(true); - } -} +/******************************************************************************* + * ============LICENSE_START================================================== + * * org.onap.dmaap + * * =========================================================================== + * * Copyright © 2017 AT&T Intellectual Property. All rights reserved. + * * =========================================================================== + * * Licensed under the Apache License, Version 2.0 (the "License"); + * * you may not use this file except in compliance with the License. + * * You may obtain a copy of the License at + * * + * * http://www.apache.org/licenses/LICENSE-2.0 + * * + * * Unless required by applicable law or agreed to in writing, software + * * distributed under the License is distributed on an "AS IS" BASIS, + * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * * See the License for the specific language governing permissions and + * * limitations under the License. + * * ============LICENSE_END==================================================== + * * + * * ECOMP is a trademark and service mark of AT&T Intellectual Property. + * * + ******************************************************************************/ + + +package org.onap.dmaap.datarouter.node; + +import java.net.*; + +/** + * Compare IP addresses as byte arrays to a subnet specified as a CIDR + */ +public class SubnetMatcher { + private byte[] sn; + private int len; + private int mask; + + /** + * Construct a subnet matcher given a CIDR + * + * @param subnet The CIDR to match + */ + public SubnetMatcher(String subnet) { + int i = subnet.lastIndexOf('/'); + if (i == -1) { + sn = NodeUtils.getInetAddress(subnet); + len = sn.length; + } else { + len = Integer.parseInt(subnet.substring(i + 1)); + sn = NodeUtils.getInetAddress(subnet.substring(0, i)); + mask = ((0xff00) >> (len % 8)) & 0xff; + len /= 8; + } + } + + /** + * Is the IP address in the CIDR? + * + * @param addr the IP address as bytes in network byte order + * @return true if the IP address matches. + */ + public boolean matches(byte[] addr) { + if (addr.length != sn.length) { + return (false); + } + for (int i = 0; i < len; i++) { + if (addr[i] != sn[i]) { + return (false); + } + } + if (mask != 0 && ((addr[len] ^ sn[len]) & mask) != 0) { + return (false); + } + return (true); + } +}