| /* |
| * Copyright 2014 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.cli.net; |
| |
| /** |
| * Known values for IPv6 extension header field that can be supplied to the CLI. |
| */ |
| public enum ExtHeader { |
| /** No next header. */ |
| NOEXT((short) (1 << 0)), |
| /** Encapsulated Security Payload. */ |
| ESP((short) (1 << 1)), |
| /** Authentication header. */ |
| AUTH((short) (1 << 2)), |
| /** Destination header. */ |
| DEST((short) (1 << 3)), |
| /** Fragment header. */ |
| FRAG((short) (1 << 4)), |
| /** Router header. */ |
| ROUTE((short) (1 << 5)), |
| /** Hop-by-hop header. */ |
| HOP((short) (1 << 6)), |
| /** Unexpected repeats encountered. */ |
| UNREP((short) (1 << 7)), |
| /** Unexpected sequencing encountered. */ |
| UNSEQ((short) (1 << 8)); |
| |
| private short value; |
| |
| /** |
| * Constructs an ExtHeader with the given value. |
| * |
| * @param value value to use when this ExtHeader is seen |
| */ |
| private ExtHeader(short value) { |
| this.value = value; |
| } |
| |
| /** |
| * Gets the value to use for this ExtHeader. |
| * |
| * @return short value to use for this ExtHeader |
| */ |
| public short value() { |
| return this.value; |
| } |
| |
| /** |
| * Parse a string input that could contain an ExtHeader value. The value |
| * may appear in the string either as a known exntension header name (one of the |
| * values of this enum), or a numeric extension header value. |
| * |
| * @param input the input string to parse |
| * @return the numeric value of the parsed IPv6 extension header |
| * @throws IllegalArgumentException if the input string does not contain a |
| * value that can be parsed into an IPv6 extension header |
| */ |
| public static short parseFromString(String input) { |
| try { |
| return valueOf(input).value(); |
| } catch (IllegalArgumentException e) { |
| // The input is not a known IPv6 extension header name, let's see if |
| // it's an IPv6 extension header value (short). |
| // We parse with Short to handle unsigned values correctly. |
| try { |
| return Short.parseShort(input); |
| } catch (NumberFormatException e1) { |
| throw new IllegalArgumentException( |
| "ExtHeader value must be either a string extension header name" |
| + " or an 8-bit extension header value"); |
| } |
| } |
| } |
| } |