From e8495f7dbffd9ca272bbaaab0062b732cbca8f99 Mon Sep 17 00:00:00 2001
From: =?utf8?q?David=20=E2=80=98Bombe=E2=80=99=20Roden?=
 <bombe@pterodactylus.net>
Date: Fri, 8 Apr 2011 14:32:04 +0200
Subject: [PATCH] Add FCP command interface.

---
 .../pterodactylus/sone/freenet/fcp/Command.java    | 179 +++++++++++++++++++++
 1 file changed, 179 insertions(+)
 create mode 100644 src/main/java/net/pterodactylus/sone/freenet/fcp/Command.java

diff --git a/src/main/java/net/pterodactylus/sone/freenet/fcp/Command.java b/src/main/java/net/pterodactylus/sone/freenet/fcp/Command.java
new file mode 100644
index 0000000..a4284aa
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sone/freenet/fcp/Command.java
@@ -0,0 +1,179 @@
+/*
+ * Sone - Command.java - Copyright © 2011 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.freenet.fcp;
+
+import freenet.support.SimpleFieldSet;
+import freenet.support.api.Bucket;
+
+/**
+ * Implementation of an FCP interface for other clients or plugins to
+ * communicate with Sone.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public interface Command {
+
+	/**
+	 * Executes the command, returning a reply that will be sent back to the
+	 * requesting plugin.
+	 *
+	 * @param parameters
+	 *            The parameters of the comand
+	 * @param data
+	 *            The data of the command (may be {@code null})
+	 * @param accessType
+	 *            The access type
+	 * @return A reply to send back to the plugin
+	 */
+	public Reply execute(SimpleFieldSet parameters, Bucket data, AccessType accessType);
+
+	/**
+	 * The access type of the request.
+	 *
+	 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+	 */
+	public static enum AccessType {
+
+		/** Access from another plugin. */
+		DIRECT,
+
+		/** Access via restricted FCP. */
+		RESTRICTED_FCP,
+
+		/** Access via FCP with full access. */
+		FULL_FCP,
+
+	}
+
+	/**
+	 * Interface for command replies.
+	 *
+	 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+	 */
+	public static class Reply {
+
+		/** The reply parameters. */
+		private final SimpleFieldSet replyParameters;
+
+		/** The reply data, may be {@code null}. */
+		private final byte[] data;
+
+		/** The data bucket, may be {@code null}. */
+		private final Bucket bucket;
+
+		/**
+		 * Creates a new reply with the given parameters.
+		 *
+		 * @param replyParameters
+		 *            The reply parameters
+		 */
+		public Reply(SimpleFieldSet replyParameters) {
+			this(replyParameters, null, null);
+		}
+
+		/**
+		 * Creates a new reply with the given parameters.
+		 *
+		 * @param replyParameters
+		 *            The reply parameters
+		 * @param data
+		 *            The data of the reply (may be {@code null})
+		 */
+		public Reply(SimpleFieldSet replyParameters, byte[] data) {
+			this(replyParameters, data, null);
+		}
+
+		/**
+		 * Creates a new reply with the given parameters.
+		 *
+		 * @param replyParameters
+		 *            The reply parameters
+		 * @param bucket
+		 *            The bucket of the reply (may be {@code null})
+		 */
+		public Reply(SimpleFieldSet replyParameters, Bucket bucket) {
+			this(replyParameters, null, bucket);
+		}
+
+		/**
+		 * Creates a new reply with the given parameters.
+		 *
+		 * @param replyParameters
+		 *            The reply parameters
+		 * @param data
+		 *            The data of the reply (may be {@code null})
+		 * @param bucket
+		 *            The bucket of the reply (may be {@code null})
+		 */
+		private Reply(SimpleFieldSet replyParameters, byte[] data, Bucket bucket) {
+			this.replyParameters = replyParameters;
+			this.data = data;
+			this.bucket = bucket;
+		}
+
+		/**
+		 * Returns the reply parameters.
+		 *
+		 * @return The reply parameters
+		 */
+		public SimpleFieldSet getReplyParameters() {
+			return replyParameters;
+		}
+
+		/**
+		 * Returns whether the reply has reply data.
+		 *
+		 * @see #getData()
+		 * @return {@code true} if this reply has data, {@code false} otherwise
+		 */
+		public boolean hasData() {
+			return data != null;
+		}
+
+		/**
+		 * Returns the data of the reply.
+		 *
+		 * @return The data of the reply
+		 */
+		public byte[] getData() {
+			return data;
+		}
+
+		/**
+		 * Returns whether the reply has a data bucket.
+		 *
+		 * @see #getBucket()
+		 * @return {@code true} if the reply has a data bucket, {@code false}
+		 *         otherwise
+		 */
+		public boolean hasBucket() {
+			return bucket != null;
+		}
+
+		/**
+		 * Returns the data bucket of the reply.
+		 *
+		 * @return The data bucket of the reply
+		 */
+		public Bucket getBucket() {
+			return bucket;
+		}
+
+	}
+
+}
-- 
2.7.4