diff options
Diffstat (limited to 'framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/util/Validation.java')
| -rw-r--r-- | framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/util/Validation.java | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/util/Validation.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/util/Validation.java deleted file mode 100644 index 23dd1a75..00000000 --- a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/util/Validation.java +++ /dev/null @@ -1,223 +0,0 @@ -/* - * Copyright 2015 Open Networking Laboratory - * - * 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. - */ - -package org.onosproject.bgpio.util; - -import java.net.InetAddress; -import java.net.UnknownHostException; -import java.util.Arrays; - -import org.jboss.netty.buffer.ChannelBuffer; -import org.jboss.netty.buffer.ChannelBuffers; -import org.onlab.packet.IpAddress; -import org.onlab.packet.IpPrefix; -import org.onosproject.bgpio.exceptions.BgpParseException; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -import com.google.common.primitives.Ints; - -/** - * Provides methods to parse attribute header, validate length and type. - */ -public class Validation { - private static final Logger log = LoggerFactory.getLogger(Validation.class); - public static final byte FIRST_BIT = (byte) 0x80; - public static final byte SECOND_BIT = 0x40; - public static final byte THIRD_BIT = 0x20; - public static final byte FOURTH_BIT = (byte) 0x10; - public static final byte IPV4_SIZE = 4; - private boolean firstBit; - private boolean secondBit; - private boolean thirdBit; - private boolean fourthBit; - private int len; - private boolean isShort; - - /** - * Constructor to initialize parameter. - * - * @param firstBit in AttributeFlags - * @param secondBit in AttributeFlags - * @param thirdBit in AttributeFlags - * @param fourthBit in AttributeFlags - * @param len length - * @param isShort true if length is read as short otherwise false - */ - Validation(boolean firstBit, boolean secondBit, boolean thirdBit, boolean fourthBit, int len, boolean isShort) { - this.firstBit = firstBit; - this.secondBit = secondBit; - this.thirdBit = thirdBit; - this.fourthBit = fourthBit; - this.len = len; - this.isShort = isShort; - } - - /** - * Parses attribute Header. - * - * @param cb ChannelBuffer - * @return object of Validation - */ - public static Validation parseAttributeHeader(ChannelBuffer cb) { - - boolean firstBit; - boolean secondBit; - boolean thirdBit; - boolean fourthBit; - boolean isShort; - byte flags = cb.readByte(); - byte typeCode = cb.readByte(); - byte temp = flags; - //first Bit : Optional (1) or well-known (0) - firstBit = ((temp & FIRST_BIT) == FIRST_BIT); - //second Bit : Transitive (1) or non-Transitive (0) - secondBit = ((temp & SECOND_BIT) == SECOND_BIT); - //third Bit : partial (1) or complete (0) - thirdBit = ((temp & THIRD_BIT) == THIRD_BIT); - //forth Bit(Extended Length bit) : Attribute Length is 1 octects (0) or 2 octects (1) - fourthBit = ((temp & FOURTH_BIT) == FOURTH_BIT); - int len; - if (fourthBit) { - isShort = true; - short length = cb.readShort(); - len = length; - } else { - isShort = false; - byte length = cb.readByte(); - len = length; - } - return new Validation(firstBit, secondBit, thirdBit, fourthBit, len, isShort); - } - - /** - * Throws exception if length is not correct. - * - * @param errorCode Error code - * @param subErrCode Sub Error Code - * @param length erroneous length - * @throws BgpParseException for erroneous length - */ - public static void validateLen(byte errorCode, byte subErrCode, int length) throws BgpParseException { - byte[] errLen = Ints.toByteArray(length); - ChannelBuffer buffer = ChannelBuffers.dynamicBuffer(); - buffer.writeBytes(errLen); - throw new BgpParseException(errorCode, subErrCode, buffer); - } - - /** - * Throws exception if type is not correct. - * - * @param errorCode Error code - * @param subErrCode Sub Error Code - * @param type erroneous type - * @throws BgpParseException for erroneous type - */ - public static void validateType(byte errorCode, byte subErrCode, int type) throws BgpParseException { - byte[] errType = Ints.toByteArray(type); - ChannelBuffer buffer = ChannelBuffers.dynamicBuffer(); - buffer.writeBytes(errType); - throw new BgpParseException(errorCode, subErrCode, buffer); - } - - /** - * Convert byte array to InetAddress. - * - * @param length of IpAddress - * @param cb channelBuffer - * @return InetAddress - */ - public static InetAddress toInetAddress(int length, ChannelBuffer cb) { - byte[] address = new byte[length]; - cb.readBytes(address, 0, length); - InetAddress ipAddress = null; - try { - ipAddress = InetAddress.getByAddress(address); - } catch (UnknownHostException e) { - log.info("InetAddress convertion failed"); - } - return ipAddress; - } - - /** - * Returns first bit in type flags. - * - * @return first bit in type flags - */ - public boolean getFirstBit() { - return this.firstBit; - } - - /** - * Returns second bit in type flags. - * - * @return second bit in type flags - */ - public boolean getSecondBit() { - return this.secondBit; - } - - /** - * Returns third bit in type flags. - * - * @return third bit in type flags - */ - public boolean getThirdBit() { - return this.thirdBit; - } - - /** - * Returns fourth bit in type flags. - * - * @return fourth bit in type flags - */ - public boolean getFourthBit() { - return this.fourthBit; - } - - /** - * Returns attribute length. - * - * @return attribute length - */ - public int getLength() { - return this.len; - } - - /** - * Returns whether attribute length read in short or byte. - * - * @return whether attribute length read in short or byte - */ - public boolean isShort() { - return this.isShort; - } - - /** - * Converts byte array of prefix value to IpPrefix object. - * - * @param value byte array of prefix value - * @param length prefix length in bits - * @return object of IpPrefix - */ - public static IpPrefix bytesToPrefix(byte[] value, int length) { - if (value.length != IPV4_SIZE) { - value = Arrays.copyOf(value, IPV4_SIZE); - } - IpPrefix ipPrefix = IpPrefix.valueOf(IpAddress.Version.INET, value, length); - return ipPrefix; - } -}
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