ONOS checkin based on commit tag e796610b1f721d02f9b0e213cf6f7790c10ecd60

Change-Id: Ife8810491034fe7becdba75dda20de4267bd15cd

1 files changed, 87 insertions, 0 deletions

diff --git a/framework/src/onos/cli/src/main/java/org/onosproject/cli/net/ExtHeader.java b/framework/src/onos/cli/src/main/java/org/onosproject/cli/net/ExtHeader.java
new file mode 100644
index 00000000..e27332e1
--- /dev/null
+++ b/framework/src/onos/cli/src/main/java/org/onosproject/cli/net/ExtHeader.java
@@ -0,0 +1,87 @@
+/*
+ * 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");
+            }
+        }
+    }
+}