diff options
Diffstat (limited to 'framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4')
8 files changed, 0 insertions, 1614 deletions
diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpFactoryVer4.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpFactoryVer4.java deleted file mode 100755 index c57832b6..00000000 --- a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpFactoryVer4.java +++ /dev/null @@ -1,58 +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.protocol.ver4; - -import org.onosproject.bgpio.protocol.BgpFactory; -import org.onosproject.bgpio.protocol.BgpKeepaliveMsg; -import org.onosproject.bgpio.protocol.BgpMessage; -import org.onosproject.bgpio.protocol.BgpMessageReader; -import org.onosproject.bgpio.protocol.BgpNotificationMsg; -import org.onosproject.bgpio.protocol.BgpOpenMsg; -import org.onosproject.bgpio.protocol.BgpVersion; - -/** - * Provides BGP Factory and returns builder classes for all objects and messages. - */ -public class BgpFactoryVer4 implements BgpFactory { - - public static final BgpFactoryVer4 INSTANCE = new BgpFactoryVer4(); - - @Override - public BgpOpenMsg.Builder openMessageBuilder() { - return new BgpOpenMsgVer4.Builder(); - } - - @Override - public BgpKeepaliveMsg.Builder keepaliveMessageBuilder() { - return new BgpKeepaliveMsgVer4.Builder(); - } - - @Override - public BgpNotificationMsg.Builder notificationMessageBuilder() { - return new BgpNotificationMsgVer4.Builder(); - } - - @Override - public BgpMessageReader<BgpMessage> getReader() { - return BgpMessageVer4.READER; - } - - @Override - public BgpVersion getVersion() { - return BgpVersion.BGP_4; - } -}
\ No newline at end of file diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpKeepaliveMsgVer4.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpKeepaliveMsgVer4.java deleted file mode 100644 index 2c141586..00000000 --- a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpKeepaliveMsgVer4.java +++ /dev/null @@ -1,157 +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.protocol.ver4; - -import org.jboss.netty.buffer.ChannelBuffer; -import org.onosproject.bgpio.exceptions.BgpParseException; -import org.onosproject.bgpio.protocol.BgpKeepaliveMsg; -import org.onosproject.bgpio.protocol.BgpMessageReader; -import org.onosproject.bgpio.protocol.BgpMessageWriter; -import org.onosproject.bgpio.types.BgpHeader; -import org.onosproject.bgpio.protocol.BgpType; -import org.onosproject.bgpio.protocol.BgpVersion; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -import com.google.common.base.MoreObjects; - -/** - * Provides BGP keep alive message. - */ -public class BgpKeepaliveMsgVer4 implements BgpKeepaliveMsg { - - /* - <Keepalive Message>::= <Common Header> - A KEEPALIVE message consists of only the message header and has a - length of 19 octets. - - 0 1 2 3 - 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | | - + + - | | - + + - | Marker | - + + - | | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | Length | Type | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - - REFERENCE : RFC 4271 - */ - - protected static final Logger log = LoggerFactory - .getLogger(BgpKeepaliveMsgVer4.class); - - private BgpHeader bgpMsgHeader; - public static final byte PACKET_VERSION = 4; - public static final int PACKET_MINIMUM_LENGTH = 19; - public static final int MARKER_LENGTH = 16; - public static final BgpType MSG_TYPE = BgpType.KEEP_ALIVE; - public static byte[] marker = new byte[] {(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, - (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, - (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, - (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff}; - - public static final BgpKeepaliveMsgVer4.Reader READER = new Reader(); - - /** - * Reader class for reading BGP keepalive message from channel buffer. - */ - static class Reader implements BgpMessageReader<BgpKeepaliveMsg> { - - @Override - public BgpKeepaliveMsg readFrom(ChannelBuffer cb, BgpHeader bgpHeader) - throws BgpParseException { - - /* bgpHeader is not required in case of keepalive message and - Header is already read and no other fields except header in keepalive message.*/ - return new BgpKeepaliveMsgVer4(); - } - } - - /** - * Default constructor. - */ - public BgpKeepaliveMsgVer4() { - } - - /** - * Builder class for BGP keepalive message. - */ - static class Builder implements BgpKeepaliveMsg.Builder { - BgpHeader bgpMsgHeader; - - @Override - public Builder setHeader(BgpHeader bgpMsgHeader) { - this.bgpMsgHeader = bgpMsgHeader; - return this; - } - - @Override - public BgpKeepaliveMsg build() { - return new BgpKeepaliveMsgVer4(); - } - } - - @Override - public void writeTo(ChannelBuffer cb) { - WRITER.write(cb, this); - } - - static final Writer WRITER = new Writer(); - - /** - * Writer class for writing the BGP keepalive message to channel buffer. - */ - static class Writer implements BgpMessageWriter<BgpKeepaliveMsgVer4> { - - @Override - public void write(ChannelBuffer cb, BgpKeepaliveMsgVer4 message) { - - // write marker - cb.writeBytes(marker, 0, MARKER_LENGTH); - - // write length of header - cb.writeShort(PACKET_MINIMUM_LENGTH); - - // write the type of message - cb.writeByte(MSG_TYPE.getType()); - } - } - - @Override - public BgpVersion getVersion() { - return BgpVersion.BGP_4; - } - - @Override - public BgpType getType() { - return MSG_TYPE; - } - - @Override - public BgpHeader getHeader() { - return this.bgpMsgHeader; - } - - @Override - public String toString() { - return MoreObjects.toStringHelper(getClass()).toString(); - } -} diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpMessageVer4.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpMessageVer4.java deleted file mode 100755 index 1c05dae4..00000000 --- a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpMessageVer4.java +++ /dev/null @@ -1,111 +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.protocol.ver4; - -import org.jboss.netty.buffer.ChannelBuffer; -import org.onosproject.bgpio.exceptions.BgpParseException; -import org.onosproject.bgpio.protocol.BgpFactories; -import org.onosproject.bgpio.protocol.BgpMessage; -import org.onosproject.bgpio.protocol.BgpMessageReader; -import org.onosproject.bgpio.types.BgpErrorType; -import org.onosproject.bgpio.types.BgpHeader; -import org.onosproject.bgpio.util.Validation; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -/** - * Provides BGP messages. - */ -public abstract class BgpMessageVer4 { - - protected static final Logger log = LoggerFactory.getLogger(BgpFactories.class); - - static final byte OPEN_MSG_TYPE = 0x1; - static final byte KEEPALIVE_MSG_TYPE = 0x4; - static final byte UPDATE_MSG_TYPE = 0x2; - static final byte NOTIFICATION_MSG_TYPE = 0x3; - static final int MINIMUM_COMMON_HEADER_LENGTH = 19; - static final int HEADER_AND_MSG_LEN = 18; - static final int MAXIMUM_PACKET_LENGTH = 4096; - - public static final BgpMessageVer4.Reader READER = new Reader(); - - /** - * Reader class for reading BGP messages from channel buffer. - * - */ - static class Reader implements BgpMessageReader<BgpMessage> { - @Override - public BgpMessage readFrom(ChannelBuffer cb, BgpHeader bgpHeader) - throws BgpParseException { - - if (cb.readableBytes() < MINIMUM_COMMON_HEADER_LENGTH) { - log.error("Packet should have minimum length."); - Validation.validateLen(BgpErrorType.MESSAGE_HEADER_ERROR, BgpErrorType.BAD_MESSAGE_LENGTH, - cb.readableBytes()); - } - if (cb.readableBytes() > MAXIMUM_PACKET_LENGTH) { - log.error("Packet length should not exceed {}.", MAXIMUM_PACKET_LENGTH); - Validation.validateLen(BgpErrorType.MESSAGE_HEADER_ERROR, BgpErrorType.BAD_MESSAGE_LENGTH, - cb.readableBytes()); - } - try { - // fixed value property version == 4 - byte[] marker = new byte[BgpHeader.MARKER_LENGTH]; - cb.readBytes(marker, 0, BgpHeader.MARKER_LENGTH); - bgpHeader.setMarker(marker); - for (int i = 0; i < BgpHeader.MARKER_LENGTH; i++) { - if (marker[i] != (byte) 0xff) { - throw new BgpParseException(BgpErrorType.MESSAGE_HEADER_ERROR, - BgpErrorType.CONNECTION_NOT_SYNCHRONIZED, null); - } - } - short length = cb.readShort(); - if (length > cb.readableBytes() + HEADER_AND_MSG_LEN) { - Validation.validateLen(BgpErrorType.MESSAGE_HEADER_ERROR, - BgpErrorType.BAD_MESSAGE_LENGTH, length); - } - bgpHeader.setLength(length); - byte type = cb.readByte(); - bgpHeader.setType(type); - log.debug("Reading update message of type " + type); - - int len = length - MINIMUM_COMMON_HEADER_LENGTH; - switch (type) { - case OPEN_MSG_TYPE: - log.debug("OPEN MESSAGE is received"); - return BgpOpenMsgVer4.READER.readFrom(cb.readBytes(len), bgpHeader); - case KEEPALIVE_MSG_TYPE: - log.debug("KEEPALIVE MESSAGE is received"); - return BgpKeepaliveMsgVer4.READER.readFrom(cb.readBytes(len), bgpHeader); - case UPDATE_MSG_TYPE: - log.debug("UPDATE MESSAGE is received"); - return BgpUpdateMsgVer4.READER.readFrom(cb.readBytes(len), bgpHeader); - case NOTIFICATION_MSG_TYPE: - log.debug("NOTIFICATION MESSAGE is received"); - return BgpNotificationMsgVer4.READER.readFrom(cb.readBytes(len), bgpHeader); - default: - Validation.validateType(BgpErrorType.MESSAGE_HEADER_ERROR, BgpErrorType.BAD_MESSAGE_TYPE, type); - return null; - } - } catch (IndexOutOfBoundsException e) { - throw new BgpParseException(BgpErrorType.MESSAGE_HEADER_ERROR, - BgpErrorType.BAD_MESSAGE_LENGTH, null); - } - } - } -}
\ No newline at end of file diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpNotificationMsgVer4.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpNotificationMsgVer4.java deleted file mode 100644 index 7243e21a..00000000 --- a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpNotificationMsgVer4.java +++ /dev/null @@ -1,265 +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.protocol.ver4; - -import org.jboss.netty.buffer.ChannelBuffer; -import org.onosproject.bgpio.exceptions.BgpParseException; -import org.onosproject.bgpio.protocol.BgpMessageReader; -import org.onosproject.bgpio.protocol.BgpMessageWriter; -import org.onosproject.bgpio.protocol.BgpNotificationMsg; -import org.onosproject.bgpio.protocol.BgpType; -import org.onosproject.bgpio.protocol.BgpVersion; -import org.onosproject.bgpio.types.BgpErrorType; -import org.onosproject.bgpio.types.BgpHeader; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -import com.google.common.base.MoreObjects; - -/** - * A NOTIFICATION message is sent when an error condition is detected. The BGP connection is closed immediately after it - * is sent. - */ -class BgpNotificationMsgVer4 implements BgpNotificationMsg { - - /* - 0 1 2 3 - 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | Error code | Error subcode | Data (variable) | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - REFERENCE : RFC 4271 - */ - - private static final Logger log = LoggerFactory.getLogger(BgpNotificationMsgVer4.class); - - static final byte PACKET_VERSION = 4; - //BGPHeader(19) + Error code(1) + Error subcode(1) - static final int TOTAL_MESSAGE_MIN_LENGTH = 21; - static final int PACKET_MINIMUM_LENGTH = 2; - static final BgpType MSG_TYPE = BgpType.NOTIFICATION; - static final byte DEFAULT_ERRORSUBCODE = 0; - static final byte[] MARKER = {(byte) 0xff, (byte) 0xff, (byte) 0xff, - (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, - (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, - (byte) 0xff, (byte) 0xff, (byte) 0xff }; - static final byte MESSAGE_TYPE = 3; - static final BgpHeader DEFAULT_MESSAGE_HEADER = new BgpHeader(MARKER, BgpHeader.DEFAULT_HEADER_LENGTH, - MESSAGE_TYPE); - - private byte errorCode; - private byte errorSubCode; - private byte[] data; - private BgpHeader bgpHeader; - public static final BgpNotificationMsgVer4.Reader READER = new Reader(); - - /** - * Initialize fields. - */ - public BgpNotificationMsgVer4() { - this.bgpHeader = null; - this.data = null; - this.errorCode = 0; - this.errorSubCode = 0; - } - - /** - * Constructor to initialize parameters. - * - * @param bgpHeader BGP Header in notification message - * @param errorCode error code - * @param errorSubCode error subcode - * @param data field - */ - public BgpNotificationMsgVer4(BgpHeader bgpHeader, byte errorCode, byte errorSubCode, byte[] data) { - this.bgpHeader = bgpHeader; - this.data = data; - this.errorCode = errorCode; - this.errorSubCode = errorSubCode; - } - - /** - * Reader reads BGP Notification Message from the channel buffer. - */ - static class Reader implements BgpMessageReader<BgpNotificationMsg> { - @Override - public BgpNotificationMsg readFrom(ChannelBuffer cb, BgpHeader bgpHeader) throws BgpParseException { - byte errorCode; - byte errorSubCode; - if (cb.readableBytes() < PACKET_MINIMUM_LENGTH) { - throw new BgpParseException("Not enough readable bytes"); - } - errorCode = cb.readByte(); - errorSubCode = cb.readByte(); - //Message Length = 21 + Data Length - int dataLength = bgpHeader.getLength() - TOTAL_MESSAGE_MIN_LENGTH; - byte[] data = new byte[dataLength]; - cb.readBytes(data, 0, dataLength); - return new BgpNotificationMsgVer4(bgpHeader, errorCode, errorSubCode, data); - } - } - - /** - * Builder class for BGP notification message. - */ - static class Builder implements BgpNotificationMsg.Builder { - private byte errorCode; - private byte errorSubCode; - private byte[] data; - private BgpHeader bgpHeader; - private boolean isErrorCodeSet = false; - private boolean isErrorSubCodeSet = false; - private boolean isBGPHeaderSet = false; - - @Override - public BgpNotificationMsg build() throws BgpParseException { - BgpHeader bgpHeader = this.isBGPHeaderSet ? this.bgpHeader : DEFAULT_MESSAGE_HEADER; - if (!this.isErrorCodeSet) { - throw new BgpParseException("Error code must be present"); - } - - byte errorSubCode = this.isErrorSubCodeSet ? this.errorSubCode : DEFAULT_ERRORSUBCODE; - return new BgpNotificationMsgVer4(bgpHeader, this.errorCode, errorSubCode, this.data); - } - - @Override - public Builder setErrorCode(byte errorCode) { - this.errorCode = errorCode; - this.isErrorCodeSet = true; - return this; - } - - @Override - public Builder setErrorSubCode(byte errorSubCode) { - this.errorSubCode = errorSubCode; - this.isErrorSubCodeSet = true; - return this; - } - - @Override - public Builder setData(byte[] data) { - if (data != null) { - this.data = data; - } - return this; - } - - @Override - public Builder setHeader(BgpHeader bgpMsgHeader) { - this.bgpHeader = bgpMsgHeader; - return this; - } - } - - @Override - public BgpVersion getVersion() { - return BgpVersion.BGP_4; - } - - @Override - public BgpType getType() { - return BgpType.NOTIFICATION; - } - - @Override - public void writeTo(ChannelBuffer cb) throws BgpParseException { - WRITER.write(cb, this); - } - - static final Writer WRITER = new Writer(); - - /** - * Writer writes BGP notification message to channel buffer. - */ - static class Writer implements BgpMessageWriter<BgpNotificationMsgVer4> { - @Override - public void write(ChannelBuffer cb, BgpNotificationMsgVer4 message) throws BgpParseException { - int msgStartIndex = cb.writerIndex(); - int headerLenIndex = message.bgpHeader.write(cb); - if (headerLenIndex <= 0) { - throw new BgpParseException(BgpErrorType.MESSAGE_HEADER_ERROR, (byte) 0, null); - } - cb.writeByte(message.errorCode); - cb.writeByte(message.errorSubCode); - if (message.data != null) { - cb.writeBytes(message.data); - } - - //Update message length field in notification message - int length = cb.writerIndex() - msgStartIndex; - cb.setShort(headerLenIndex, (short) length); - message.bgpHeader.setLength((short) length); - } - } - - @Override - public byte getErrorCode() { - return this.errorCode; - } - - /** - * Sets errorcode with specified errorcode. - * - * @param errorCode field - */ - public void setErrorCode(byte errorCode) { - this.errorCode = errorCode; - } - - @Override - public byte getErrorSubCode() { - return this.errorSubCode; - } - - /** - * Sets error subcode with specified errorSubCode. - * - * @param errorSubCode field - */ - public void setErrorSubCode(byte errorSubCode) { - this.errorSubCode = errorSubCode; - } - - @Override - public byte[] getData() { - return this.data; - } - - /** - * Sets error data with specified data. - * - * @param data field - */ - public void setData(byte[] data) { - this.data = data; - } - - @Override - public BgpHeader getHeader() { - return this.bgpHeader; - } - - @Override - public String toString() { - return MoreObjects.toStringHelper(getClass()) - .omitNullValues() - .add("bgpHeader", bgpHeader) - .add("data", data) - .add("errorCode", errorCode) - .add("errorSubCode", errorSubCode) - .toString(); - } -}
\ No newline at end of file diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpOpenMsgVer4.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpOpenMsgVer4.java deleted file mode 100644 index 359eec25..00000000 --- a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpOpenMsgVer4.java +++ /dev/null @@ -1,518 +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.protocol.ver4; - -import java.util.LinkedList; -import java.util.ListIterator; - -import org.jboss.netty.buffer.ChannelBuffer; -import org.onosproject.bgpio.exceptions.BgpParseException; -import org.onosproject.bgpio.protocol.BgpMessageReader; -import org.onosproject.bgpio.protocol.BgpMessageWriter; -import org.onosproject.bgpio.protocol.BgpOpenMsg; -import org.onosproject.bgpio.protocol.BgpType; -import org.onosproject.bgpio.protocol.BgpVersion; -import org.onosproject.bgpio.types.BgpErrorType; -import org.onosproject.bgpio.types.BgpHeader; -import org.onosproject.bgpio.types.BgpValueType; -import org.onosproject.bgpio.types.FourOctetAsNumCapabilityTlv; -import org.onosproject.bgpio.types.MultiProtocolExtnCapabilityTlv; -import org.onosproject.bgpio.util.Validation; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -import com.google.common.base.MoreObjects; - -/** - * Provides BGP open message. - */ -public class BgpOpenMsgVer4 implements BgpOpenMsg { - - /* - 0 1 2 3 - 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 - +-+-+-+-+-+-+-+-+ - | Version | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | My Autonomous System | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | Hold Time | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | BGP Identifier | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | Opt Parm Len | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | Optional Parameters (variable) | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - OPEN Message Format - REFERENCE : RFC 4271 - */ - - protected static final Logger log = LoggerFactory.getLogger(BgpOpenMsgVer4.class); - - public static final byte PACKET_VERSION = 4; - public static final int OPEN_MSG_MINIMUM_LENGTH = 10; - public static final int MSG_HEADER_LENGTH = 19; - public static final int MARKER_LENGTH = 16; - public static final int DEFAULT_HOLD_TIME = 120; - public static final short AS_TRANS = 23456; - public static final int OPT_PARA_TYPE_CAPABILITY = 2; - public static final BgpType MSG_TYPE = BgpType.OPEN; - public static final short AFI = 16388; - public static final byte SAFI = 71; - public static final byte RES = 0; - public static final int FOUR_OCTET_AS_NUM_CAPA_TYPE = 65; - public static final byte[] MARKER = new byte[]{(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, - (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, - (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff}; - public static final BgpHeader DEFAULT_OPEN_HEADER = new BgpHeader(MARKER, - (short) OPEN_MSG_MINIMUM_LENGTH, (byte) 0X01); - private BgpHeader bgpMsgHeader; - private byte version; - private short asNumber; - private short holdTime; - private int bgpId; - private boolean isLargeAsCapabilitySet; - private LinkedList<BgpValueType> capabilityTlv; - - public static final BgpOpenMsgVer4.Reader READER = new Reader(); - - /** - * reset variables. - */ - public BgpOpenMsgVer4() { - this.bgpMsgHeader = null; - this.version = 0; - this.holdTime = 0; - this.asNumber = 0; - this.bgpId = 0; - this.capabilityTlv = null; - } - - /** - * Constructor to initialize all variables of BGP Open message. - * - * @param bgpMsgHeader BGP Header in open message - * @param version BGP version in open message - * @param holdTime hold time in open message - * @param asNumber AS number in open message - * @param bgpId BGP identifier in open message - * @param capabilityTlv capabilities in open message - */ - public BgpOpenMsgVer4(BgpHeader bgpMsgHeader, byte version, short asNumber, short holdTime, - int bgpId, LinkedList<BgpValueType> capabilityTlv) { - this.bgpMsgHeader = bgpMsgHeader; - this.version = version; - this.asNumber = asNumber; - this.holdTime = holdTime; - this.bgpId = bgpId; - this.capabilityTlv = capabilityTlv; - } - - @Override - public BgpHeader getHeader() { - return this.bgpMsgHeader; - } - - @Override - public BgpVersion getVersion() { - return BgpVersion.BGP_4; - } - - @Override - public BgpType getType() { - return MSG_TYPE; - } - - @Override - public short getHoldTime() { - return this.holdTime; - } - - @Override - public short getAsNumber() { - return this.asNumber; - } - - @Override - public int getBgpId() { - return this.bgpId; - } - - @Override - public LinkedList<BgpValueType> getCapabilityTlv() { - return this.capabilityTlv; - } - - /** - * Reader class for reading BGP open message from channel buffer. - */ - public static class Reader implements BgpMessageReader<BgpOpenMsg> { - - @Override - public BgpOpenMsg readFrom(ChannelBuffer cb, BgpHeader bgpHeader) throws BgpParseException { - - byte version; - short holdTime; - short asNumber; - int bgpId; - byte optParaLen = 0; - byte optParaType; - byte capParaLen = 0; - LinkedList<BgpValueType> capabilityTlv = new LinkedList<>(); - - if (cb.readableBytes() < OPEN_MSG_MINIMUM_LENGTH) { - log.error("[readFrom] Invalid length: Packet size is less than the minimum length "); - Validation.validateLen(BgpErrorType.OPEN_MESSAGE_ERROR, BgpErrorType.BAD_MESSAGE_LENGTH, - cb.readableBytes()); - } - - // Read version - version = cb.readByte(); - if (version != PACKET_VERSION) { - log.error("[readFrom] Invalid version: " + version); - throw new BgpParseException(BgpErrorType.OPEN_MESSAGE_ERROR, - BgpErrorType.UNSUPPORTED_VERSION_NUMBER, null); - } - - // Read AS number - asNumber = cb.readShort(); - - // Read Hold timer - holdTime = cb.readShort(); - - // Read BGP Identifier - bgpId = cb.readInt(); - - // Read optional parameter length - optParaLen = cb.readByte(); - - // Read Capabilities if optional parameter length is greater than 0 - if (optParaLen != 0) { - // Read optional parameter type - optParaType = cb.readByte(); - - // Read optional parameter length - capParaLen = cb.readByte(); - - if (cb.readableBytes() < capParaLen) { - throw new BgpParseException(BgpErrorType.OPEN_MESSAGE_ERROR, (byte) 0, null); - } - - ChannelBuffer capaCb = cb.readBytes(capParaLen); - - // Parse capabilities only if optional parameter type is 2 - if ((optParaType == OPT_PARA_TYPE_CAPABILITY) && (capParaLen != 0)) { - capabilityTlv = parseCapabilityTlv(capaCb); - } else { - throw new BgpParseException(BgpErrorType.OPEN_MESSAGE_ERROR, - BgpErrorType.UNSUPPORTED_OPTIONAL_PARAMETER, null); - } - } - return new BgpOpenMsgVer4(bgpHeader, version, asNumber, holdTime, bgpId, capabilityTlv); - } - } - - /** - * Parsing capabilities. - * - * @param cb of type channel buffer - * @return capabilityTlv of open message - * @throws BgpParseException while parsing capabilities - */ - protected static LinkedList<BgpValueType> parseCapabilityTlv(ChannelBuffer cb) throws BgpParseException { - - LinkedList<BgpValueType> capabilityTlv = new LinkedList<>(); - - while (cb.readableBytes() > 0) { - BgpValueType tlv; - short type = cb.readByte(); - short length = cb.readByte(); - - switch (type) { - case FourOctetAsNumCapabilityTlv.TYPE: - log.debug("FourOctetAsNumCapabilityTlv"); - if (FourOctetAsNumCapabilityTlv.LENGTH != length) { - throw new BgpParseException("Invalid length received for FourOctetAsNumCapabilityTlv."); - } - if (length > cb.readableBytes()) { - throw new BgpParseException("Four octet as num tlv length" - + " is more than readableBytes."); - } - int as4Num = cb.readInt(); - tlv = new FourOctetAsNumCapabilityTlv(as4Num); - break; - case MultiProtocolExtnCapabilityTlv.TYPE: - log.debug("MultiProtocolExtnCapabilityTlv"); - if (MultiProtocolExtnCapabilityTlv.LENGTH != length) { - throw new BgpParseException("Invalid length received for MultiProtocolExtnCapabilityTlv."); - } - if (length > cb.readableBytes()) { - throw new BgpParseException("BGP LS tlv length is more than readableBytes."); - } - short afi = cb.readShort(); - byte res = cb.readByte(); - byte safi = cb.readByte(); - tlv = new MultiProtocolExtnCapabilityTlv(afi, res, safi); - break; - default: - log.debug("Warning: Unsupported TLV: " + type); - cb.skipBytes(length); - continue; - } - capabilityTlv.add(tlv); - } - return capabilityTlv; - } - - /** - * Builder class for BGP open message. - */ - static class Builder implements BgpOpenMsg.Builder { - - private boolean isHeaderSet = false; - private BgpHeader bgpMsgHeader; - private boolean isHoldTimeSet = false; - private short holdTime; - private boolean isAsNumSet = false; - private short asNumber; - private boolean isBgpIdSet = false; - private int bgpId; - private boolean isLargeAsCapabilityTlvSet = false; - private boolean isLsCapabilityTlvSet = false; - - LinkedList<BgpValueType> capabilityTlv = new LinkedList<>(); - - @Override - public BgpOpenMsg build() throws BgpParseException { - BgpHeader bgpMsgHeader = this.isHeaderSet ? this.bgpMsgHeader : DEFAULT_OPEN_HEADER; - short holdTime = this.isHoldTimeSet ? this.holdTime : DEFAULT_HOLD_TIME; - - if (!this.isAsNumSet) { - throw new BgpParseException("BGP AS number is not set (mandatory)"); - } - - if (!this.isBgpIdSet) { - throw new BgpParseException("BGPID is not set (mandatory)"); - } - - if (this.isLargeAsCapabilityTlvSet) { - BgpValueType tlv; - int value = this.asNumber; - tlv = new FourOctetAsNumCapabilityTlv(value); - this.capabilityTlv.add(tlv); - } - - if (this.isLsCapabilityTlvSet) { - BgpValueType tlv; - tlv = new MultiProtocolExtnCapabilityTlv(AFI, RES, SAFI); - this.capabilityTlv.add(tlv); - } - - return new BgpOpenMsgVer4(bgpMsgHeader, PACKET_VERSION, this.asNumber, holdTime, this.bgpId, - this.capabilityTlv); - } - - @Override - public Builder setHeader(BgpHeader bgpMsgHeader) { - this.bgpMsgHeader = bgpMsgHeader; - return this; - } - - @Override - public Builder setHoldTime(short holdTime) { - this.holdTime = holdTime; - this.isHoldTimeSet = true; - return this; - } - - @Override - public Builder setAsNumber(short asNumber) { - this.asNumber = asNumber; - this.isAsNumSet = true; - return this; - } - - @Override - public Builder setBgpId(int bgpId) { - this.bgpId = bgpId; - this.isBgpIdSet = true; - return this; - } - - @Override - public Builder setCapabilityTlv(LinkedList<BgpValueType> capabilityTlv) { - this.capabilityTlv = capabilityTlv; - return this; - } - - @Override - public Builder setLargeAsCapabilityTlv(boolean isLargeAsCapabilitySet) { - this.isLargeAsCapabilityTlvSet = isLargeAsCapabilitySet; - return this; - } - - @Override - public Builder setLsCapabilityTlv(boolean isLsCapabilitySet) { - this.isLsCapabilityTlvSet = isLsCapabilitySet; - return this; - } - } - - @Override - public void writeTo(ChannelBuffer cb) { - try { - WRITER.write(cb, this); - } catch (BgpParseException e) { - log.debug("[writeTo] Error: " + e.toString()); - } - } - - public static final Writer WRITER = new Writer(); - - /** - * Writer class for writing BGP open message to channel buffer. - */ - public static class Writer implements BgpMessageWriter<BgpOpenMsgVer4> { - - @Override - public void write(ChannelBuffer cb, BgpOpenMsgVer4 message) throws BgpParseException { - - int optParaLen = 0; - int as4num = 0; - - int startIndex = cb.writerIndex(); - - // write common header and get msg length index - int msgLenIndex = message.bgpMsgHeader.write(cb); - - if (msgLenIndex <= 0) { - throw new BgpParseException("Unable to write message header."); - } - - // write version in 1-octet - cb.writeByte(message.version); - - // get as4num if LS Capability is set - if (message.isLargeAsCapabilitySet) { - LinkedList<BgpValueType> capabilityTlv = message - .getCapabilityTlv(); - ListIterator<BgpValueType> listIterator = capabilityTlv - .listIterator(); - - while (listIterator.hasNext()) { - BgpValueType tlv = listIterator.next(); - if (tlv.getType() == FOUR_OCTET_AS_NUM_CAPA_TYPE) { - as4num = ((FourOctetAsNumCapabilityTlv) tlv).getInt(); - break; - } - } - } - - if ((message.isLargeAsCapabilitySet) && (as4num > 65535)) { - // write As number as AS_TRANS - cb.writeShort(AS_TRANS); - } else { - // write AS number in next 2-octet - cb.writeShort(message.asNumber); - } - - // write HoldTime in next 2-octet - cb.writeShort(message.holdTime); - - // write BGP Identifier in next 4-octet - cb.writeInt(message.bgpId); - - // store the index of Optional parameter length - int optParaLenIndex = cb.writerIndex(); - - // set optional parameter length as 0 - cb.writeByte(0); - - // Pack capability TLV - optParaLen = message.packCapabilityTlv(cb, message); - - if (optParaLen != 0) { - // Update optional parameter length - cb.setByte(optParaLenIndex, (byte) (optParaLen + 2)); //+2 for optional parameter type. - } - - // write OPEN Object Length - int length = cb.writerIndex() - startIndex; - cb.setShort(msgLenIndex, (short) length); - message.bgpMsgHeader.setLength((short) length); - } - } - - /** - * returns length of capability tlvs. - * - * @param cb of type channel buffer - * @param message of type BGPOpenMsgVer4 - * @return capParaLen of open message - */ - protected int packCapabilityTlv(ChannelBuffer cb, BgpOpenMsgVer4 message) { - int startIndex = cb.writerIndex(); - int capParaLen = 0; - int capParaLenIndex = 0; - - LinkedList<BgpValueType> capabilityTlv = message.capabilityTlv; - ListIterator<BgpValueType> listIterator = capabilityTlv.listIterator(); - - if (listIterator.hasNext()) { - // Set optional parameter type as 2 - cb.writeByte(OPT_PARA_TYPE_CAPABILITY); - - // Store the index of capability parameter length and update length at the end - capParaLenIndex = cb.writerIndex(); - - // Set capability parameter length as 0 - cb.writeByte(0); - - // Update the startIndex to know the length of capability tlv - startIndex = cb.writerIndex(); - } - - while (listIterator.hasNext()) { - BgpValueType tlv = listIterator.next(); - if (tlv == null) { - log.debug("Warning: tlv is null from CapabilityTlv list"); - continue; - } - tlv.write(cb); - } - - capParaLen = cb.writerIndex() - startIndex; - - if (capParaLen != 0) { - // Update capability parameter length - cb.setByte(capParaLenIndex, (byte) capParaLen); - } - return capParaLen; - } - - @Override - public String toString() { - return MoreObjects.toStringHelper(getClass()) - .add("bgpMsgHeader", bgpMsgHeader) - .add("version", version) - .add("holdTime", holdTime) - .add("asNumber", asNumber) - .add("bgpId", bgpId) - .add("capabilityTlv", capabilityTlv) - .toString(); - } -} diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpPathAttributes.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpPathAttributes.java deleted file mode 100644 index 13e52ca2..00000000 --- a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpPathAttributes.java +++ /dev/null @@ -1,200 +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.protocol.ver4; - -import java.util.LinkedList; -import java.util.List; - -import org.jboss.netty.buffer.ChannelBuffer; -import org.onosproject.bgpio.exceptions.BgpParseException; -import org.onosproject.bgpio.types.As4Path; -import org.onosproject.bgpio.types.AsPath; -import org.onosproject.bgpio.types.BgpErrorType; -import org.onosproject.bgpio.types.BgpValueType; -import org.onosproject.bgpio.types.LocalPref; -import org.onosproject.bgpio.types.Med; -import org.onosproject.bgpio.types.NextHop; -import org.onosproject.bgpio.types.Origin; -import org.onosproject.bgpio.types.MpReachNlri; -import org.onosproject.bgpio.types.MpUnReachNlri; -import org.onosproject.bgpio.util.UnSupportedAttribute; -import org.onosproject.bgpio.util.Validation; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -import com.google.common.base.MoreObjects; - -/** - * Provides Implementation of BGP Path Attribute. - */ -public class BgpPathAttributes { - - /* Path attribute: - <attribute type, attribute length, attribute value> - - 0 1 - 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | Attr. Flags |Attr. Type Code| - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - REFERENCE : RFC 4271 - */ - protected static final Logger log = LoggerFactory.getLogger(BgpPathAttributes.class); - - public static final int LINK_STATE_ATTRIBUTE_TYPE = 50; - public static final int MPREACHNLRI_TYPE = 14; - public static final int MPUNREACHNLRI_TYPE = 15; - - private final List<BgpValueType> pathAttribute; - - /** - * Initialize parameter. - */ - public BgpPathAttributes() { - this.pathAttribute = null; - } - - /** - * Constructor to initialize parameters for BGP path attributes. - * - * @param pathAttribute list of path attributes - */ - public BgpPathAttributes(List<BgpValueType> pathAttribute) { - this.pathAttribute = pathAttribute; - } - - /** - * Returns list of path attributes. - * - * @return list of path attributes - */ - public List<BgpValueType> pathAttributes() { - return this.pathAttribute; - } - - /** - * Reads from channelBuffer and parses BGP path attributes. - * - * @param cb channelBuffer - * @return object of BgpPathAttributes - * @throws BgpParseException while parsing BGP path attributes - */ - public static BgpPathAttributes read(ChannelBuffer cb) - throws BgpParseException { - - BgpValueType pathAttribute = null; - List<BgpValueType> pathAttributeList = new LinkedList<>(); - boolean isOrigin = false; - boolean isAsPath = false; - boolean isNextHop = false; - boolean isMpReach = false; - boolean isMpUnReach = false; - while (cb.readableBytes() > 0) { - cb.markReaderIndex(); - byte flags = cb.readByte(); - byte typeCode = cb.readByte(); - cb.resetReaderIndex(); - switch (typeCode) { - case Origin.ORIGIN_TYPE: - pathAttribute = Origin.read(cb); - isOrigin = ((Origin) pathAttribute).isOriginSet(); - break; - case AsPath.ASPATH_TYPE: - pathAttribute = AsPath.read(cb); - isAsPath = ((AsPath) pathAttribute).isaspathSet(); - break; - case As4Path.AS4PATH_TYPE: - pathAttribute = As4Path.read(cb); - break; - case NextHop.NEXTHOP_TYPE: - pathAttribute = NextHop.read(cb); - isNextHop = ((NextHop) pathAttribute).isNextHopSet(); - break; - case Med.MED_TYPE: - pathAttribute = Med.read(cb); - break; - case LocalPref.LOCAL_PREF_TYPE: - pathAttribute = LocalPref.read(cb); - break; - case MpReachNlri.MPREACHNLRI_TYPE: - pathAttribute = MpReachNlri.read(cb); - isMpReach = ((MpReachNlri) pathAttribute).isMpReachNlriSet(); - break; - case MpUnReachNlri.MPUNREACHNLRI_TYPE: - pathAttribute = MpUnReachNlri.read(cb); - isMpUnReach = ((MpUnReachNlri) pathAttribute) - .isMpUnReachNlriSet(); - break; - case LINK_STATE_ATTRIBUTE_TYPE: - //TODO: To be merged later - break; - default: - //skip bytes for unsupported attribute types - UnSupportedAttribute.read(cb); - } - pathAttributeList.add(pathAttribute); - } - - checkMandatoryAttr(isOrigin, isAsPath, isNextHop, isMpReach, isMpUnReach); - //TODO:if mp_reach or mp_unreach not present ignore the packet - return new BgpPathAttributes(pathAttributeList); - } - - /** - * Checks mandatory attributes are presents, if not present throws exception. - * - * @param isOrigin say whether origin attribute is present - * @param isAsPath say whether aspath attribute is present - * @param isNextHop say whether nexthop attribute is present - * @param isMpReach say whether mpreach attribute is present - * @param isMpUnReach say whether mpunreach attribute is present - * @throws BgpParseException if mandatory path attribute is not present - */ - public static void checkMandatoryAttr(boolean isOrigin, boolean isAsPath, - boolean isNextHop, boolean isMpReach, boolean isMpUnReach) - throws BgpParseException { - // Mandatory attributes validation not required for MP_UNREACH - if (isMpUnReach) { - return; - } - - if (!isOrigin) { - log.debug("Mandatory Attributes not Present"); - Validation.validateType(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MISSING_WELLKNOWN_ATTRIBUTE, - Origin.ORIGIN_TYPE); - } - if (!isAsPath) { - log.debug("Mandatory Attributes not Present"); - Validation.validateType(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MISSING_WELLKNOWN_ATTRIBUTE, - AsPath.ASPATH_TYPE); - } - if (!isMpUnReach && !isMpReach && !isNextHop) { - log.debug("Mandatory Attributes not Present"); - Validation.validateType(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MISSING_WELLKNOWN_ATTRIBUTE, - NextHop.NEXTHOP_TYPE); - } - } - - @Override - public String toString() { - return MoreObjects.toStringHelper(getClass()) - .add("pathAttribute", pathAttribute) - .toString(); - } -} diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpUpdateMsgVer4.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpUpdateMsgVer4.java deleted file mode 100644 index 4d6af594..00000000 --- a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpUpdateMsgVer4.java +++ /dev/null @@ -1,285 +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.protocol.ver4; - -import java.util.LinkedList; -import java.util.List; - -import org.jboss.netty.buffer.ChannelBuffer; -import org.onlab.packet.IpPrefix; -import org.onosproject.bgpio.exceptions.BgpParseException; -import org.onosproject.bgpio.protocol.BgpMessageReader; -import org.onosproject.bgpio.protocol.BgpType; -import org.onosproject.bgpio.protocol.BgpUpdateMsg; -import org.onosproject.bgpio.types.BgpErrorType; -import org.onosproject.bgpio.types.BgpHeader; -import org.onosproject.bgpio.util.Validation; -import org.onosproject.bgpio.protocol.BgpVersion; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -import com.google.common.base.MoreObjects; - -/** - * BGP Update Message: UPDATE messages are used to transfer routing information - * between BGP peers. The information in the UPDATE message is used by core to - * construct a graph - */ -public class BgpUpdateMsgVer4 implements BgpUpdateMsg { - - /* 0 1 2 3 - 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | | - + + - | | - + + - | Marker | - + + - | | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | Length | Type | - +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - | Withdrawn Routes Length (2 octets) | - +-----------------------------------------------------+ - | Withdrawn Routes (variable) | - +-----------------------------------------------------+ - | Total Path Attribute Length (2 octets) | - +-----------------------------------------------------+ - | Path Attributes (variable) | - +-----------------------------------------------------+ - | Network Layer Reachability Information (variable) | - +-----------------------------------------------------+ - REFERENCE : RFC 4271 - */ - - protected static final Logger log = LoggerFactory - .getLogger(BgpUpdateMsgVer4.class); - - public static final byte PACKET_VERSION = 4; - //Withdrawn Routes Length(2) + Total Path Attribute Length(2) - public static final int PACKET_MINIMUM_LENGTH = 4; - public static final int BYTE_IN_BITS = 8; - public static final int MIN_LEN_AFTER_WITHDRW_ROUTES = 2; - public static final int MINIMUM_COMMON_HEADER_LENGTH = 19; - public static final BgpType MSG_TYPE = BgpType.UPDATE; - public static final BgpUpdateMsgVer4.Reader READER = new Reader(); - - private List<IpPrefix> withdrawnRoutes; - private BgpPathAttributes bgpPathAttributes; - private BgpHeader bgpHeader; - private List<IpPrefix> nlri; - - /** - * Constructor to initialize parameters for BGP Update message. - * - * @param bgpHeader in Update message - * @param withdrawnRoutes withdrawn routes - * @param bgpPathAttributes BGP Path attributes - * @param nlri Network Layer Reachability Information - */ - public BgpUpdateMsgVer4(BgpHeader bgpHeader, List<IpPrefix> withdrawnRoutes, - BgpPathAttributes bgpPathAttributes, List<IpPrefix> nlri) { - this.bgpHeader = bgpHeader; - this.withdrawnRoutes = withdrawnRoutes; - this.bgpPathAttributes = bgpPathAttributes; - this.nlri = nlri; - } - - /** - * Reader reads BGP Update Message from the channel buffer. - */ - static class Reader implements BgpMessageReader<BgpUpdateMsg> { - - @Override - public BgpUpdateMsg readFrom(ChannelBuffer cb, BgpHeader bgpHeader) - throws BgpParseException { - - if (cb.readableBytes() != (bgpHeader.getLength() - MINIMUM_COMMON_HEADER_LENGTH)) { - Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.BAD_MESSAGE_LENGTH, bgpHeader.getLength()); - } - - LinkedList<IpPrefix> withDrwRoutes = new LinkedList<>(); - LinkedList<IpPrefix> nlri = new LinkedList<>(); - BgpPathAttributes bgpPathAttributes = new BgpPathAttributes(); - // Reading Withdrawn Routes Length - Short withDrwLen = cb.readShort(); - - if (cb.readableBytes() < withDrwLen) { - Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MALFORMED_ATTRIBUTE_LIST, - cb.readableBytes()); - } - ChannelBuffer tempCb = cb.readBytes(withDrwLen); - if (withDrwLen != 0) { - // Parsing WithdrawnRoutes - withDrwRoutes = parseWithdrawnRoutes(tempCb); - } - if (cb.readableBytes() < MIN_LEN_AFTER_WITHDRW_ROUTES) { - log.debug("Bgp Path Attribute len field not present"); - throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MALFORMED_ATTRIBUTE_LIST, null); - } - - // Reading Total Path Attribute Length - short totPathAttrLen = cb.readShort(); - int len = withDrwLen + totPathAttrLen + PACKET_MINIMUM_LENGTH; - if (len > bgpHeader.getLength()) { - throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MALFORMED_ATTRIBUTE_LIST, null); - } - if (totPathAttrLen != 0) { - // Parsing BGPPathAttributes - if (cb.readableBytes() < totPathAttrLen) { - Validation - .validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MALFORMED_ATTRIBUTE_LIST, - cb.readableBytes()); - } - tempCb = cb.readBytes(totPathAttrLen); - bgpPathAttributes = BgpPathAttributes.read(tempCb); - } - if (cb.readableBytes() > 0) { - // Parsing NLRI - nlri = parseNlri(cb); - } - return new BgpUpdateMsgVer4(bgpHeader, withDrwRoutes, - bgpPathAttributes, nlri); - } - } - - /** - * Parses NLRI from channel buffer. - * - * @param cb channelBuffer - * @return list of IP Prefix - * @throws BgpParseException while parsing NLRI - */ - public static LinkedList<IpPrefix> parseNlri(ChannelBuffer cb) - throws BgpParseException { - LinkedList<IpPrefix> nlri = new LinkedList<>(); - while (cb.readableBytes() > 0) { - int length = cb.readByte(); - IpPrefix ipPrefix; - if (length == 0) { - byte[] prefix = new byte[] {0}; - ipPrefix = Validation.bytesToPrefix(prefix, length); - nlri.add(ipPrefix); - } else { - int len = length / BYTE_IN_BITS; - int reminder = length % BYTE_IN_BITS; - if (reminder > 0) { - len = len + 1; - } - if (cb.readableBytes() < len) { - Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MALFORMED_ATTRIBUTE_LIST, - cb.readableBytes()); - } - byte[] prefix = new byte[len]; - cb.readBytes(prefix, 0, len); - ipPrefix = Validation.bytesToPrefix(prefix, length); - nlri.add(ipPrefix); - } - } - return nlri; - } - - /** - * Parsing withdrawn routes from channel buffer. - * - * @param cb channelBuffer - * @return list of IP prefix - * @throws BgpParseException while parsing withdrawn routes - */ - public static LinkedList<IpPrefix> parseWithdrawnRoutes(ChannelBuffer cb) - throws BgpParseException { - LinkedList<IpPrefix> withDrwRoutes = new LinkedList<>(); - while (cb.readableBytes() > 0) { - int length = cb.readByte(); - IpPrefix ipPrefix; - if (length == 0) { - byte[] prefix = new byte[] {0}; - ipPrefix = Validation.bytesToPrefix(prefix, length); - withDrwRoutes.add(ipPrefix); - } else { - int len = length / BYTE_IN_BITS; - int reminder = length % BYTE_IN_BITS; - if (reminder > 0) { - len = len + 1; - } - if (cb.readableBytes() < len) { - Validation - .validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, - BgpErrorType.MALFORMED_ATTRIBUTE_LIST, - cb.readableBytes()); - } - byte[] prefix = new byte[len]; - cb.readBytes(prefix, 0, len); - ipPrefix = Validation.bytesToPrefix(prefix, length); - withDrwRoutes.add(ipPrefix); - } - } - return withDrwRoutes; - } - - @Override - public BgpVersion getVersion() { - return BgpVersion.BGP_4; - } - - @Override - public BgpType getType() { - return BgpType.UPDATE; - } - - @Override - public void writeTo(ChannelBuffer channelBuffer) throws BgpParseException { - //Not to be implemented as of now - } - - @Override - public BgpPathAttributes bgpPathAttributes() { - return this.bgpPathAttributes; - } - - @Override - public List<IpPrefix> withdrawnRoutes() { - return withdrawnRoutes; - } - - @Override - public List<IpPrefix> nlri() { - return nlri; - } - - @Override - public BgpHeader getHeader() { - return this.bgpHeader; - } - - @Override - public String toString() { - return MoreObjects.toStringHelper(getClass()) - .omitNullValues() - .add("bgpHeader", bgpHeader) - .add("withDrawnRoutes", withdrawnRoutes) - .add("nlri", nlri) - .add("bgpPathAttributes", bgpPathAttributes) - .toString(); - } -} diff --git a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/package-info.java b/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/package-info.java deleted file mode 100755 index fb8c67c0..00000000 --- a/framework/src/onos/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/package-info.java +++ /dev/null @@ -1,20 +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. - */ - -/** - * BGP Protocol specific details of version 4. - */ -package org.onosproject.bgpio.protocol.ver4;
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