| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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 rdpclient.clip; |
| |
| import streamer.BaseElement; |
| import streamer.ByteBuffer; |
| import streamer.Element; |
| import streamer.Link; |
| import streamer.Pipeline; |
| import streamer.PipelineImpl; |
| import streamer.debug.MockSink; |
| import streamer.debug.MockSource; |
| |
| public class ServerClipboardCapabilitiesPDU extends BaseElement { |
| |
| /** |
| * General capability set. |
| */ |
| public static final int CB_CAPSTYPE_GENERAL = 0x1; |
| |
| /** |
| * The Long Format Name variant of the Format List PDU is supported for |
| * exchanging updated format names. If this flag is not set, the Short Format |
| * Name variant MUST be used. If this flag is set by both protocol endpoints, |
| * then the Long Format Name variant MUST be used. |
| */ |
| public static final int CB_USE_LONG_FORMAT_NAMES = 0x00000002; |
| |
| /** |
| * File copy and paste using stream-based operations are supported using the |
| * File Contents Request PDU and File Contents Response PDU. |
| */ |
| public static final int CB_STREAM_FILECLIP_ENABLED = 0x00000004; |
| |
| /** |
| * Indicates that any description of files to copy and paste MUST NOT include |
| * the source path of the files. |
| */ |
| public static final int CB_FILECLIP_NO_FILE_PATHS = 0x00000008; |
| |
| /** |
| * Locking and unlocking of File Stream data on the clipboard is supported |
| * using the Lock Clipboard Data PDU and Unlock Clipboard Data PDU. |
| */ |
| public static final int CB_CAN_LOCK_CLIPDATA = 0x00000010; |
| |
| protected ClipboardState state; |
| |
| public ServerClipboardCapabilitiesPDU(String id, ClipboardState state) { |
| super(id); |
| this.state = state; |
| } |
| |
| @Override |
| public void handleData(ByteBuffer buf, Link link) { |
| if (verbose) |
| System.out.println("[" + this + "] INFO: Data received: " + buf + "."); |
| |
| // 0x01, 0x00, // CLIPRDR_CAPS::cCapabilitiesSets = 1 |
| int cCapabilitiesSets = buf.readUnsignedShortLE(); |
| |
| // 0x00, 0x00, // CLIPRDR_CAPS::pad1 |
| buf.skipBytes(2); |
| |
| // Parse all capability sets |
| for (int capabilitySet = 0; capabilitySet < cCapabilitiesSets; capabilitySet++) { |
| // 0x01, 0x00, // CLIPRDR_CAPS_SET::capabilitySetType = |
| // CB_CAPSTYPE_GENERAL (1) |
| int capabilitySetType = buf.readUnsignedShortLE(); |
| |
| // 0x0c, 0x00, // CLIPRDR_CAPS_SET::lengthCapability = 0x0c = 12 bytes |
| int lengthCapability = buf.readUnsignedShortLE(); |
| |
| // parse capability set |
| switch (capabilitySetType) { |
| case CB_CAPSTYPE_GENERAL: |
| parseGeneralCapabilitySet(buf.readBytes(lengthCapability - 4)); |
| break; |
| default: |
| // Ignore |
| // throw new RuntimeException("Unknown capability set type: " + |
| // capabilitySetType + ". Expected value: CB_CAPSTYPE_GENERAL (1)."); |
| } |
| } |
| |
| buf.unref(); |
| } |
| |
| protected void parseGeneralCapabilitySet(ByteBuffer buf) { |
| // 0x02, 0x00, 0x00, 0x00, // CLIPRDR_GENERAL_CAPABILITY::version = |
| // CB_CAPS_VERSION_2 (2) |
| // long version = buf.readUnsignedIntLE(); |
| buf.skipBytes(4); |
| |
| // 0x0e, 0x00, 0x00, 0x00, // CLIPRDR_GENERAL_CAPABILITY::capabilityFlags |
| // = 0x0000000e = 0x02 |0x04 |0x08 = CB_USE_LONG_FORMAT_NAMES | |
| // CB_STREAM_FILECLIP_ENABLED | CB_FILECLIP_NO_FILE_PATHS |
| int flags = buf.readSignedIntLE(); |
| |
| if ((flags & CB_USE_LONG_FORMAT_NAMES) == CB_USE_LONG_FORMAT_NAMES) { |
| state.serverUseLongFormatNames = true; |
| if (verbose) |
| System.out.println("[" + this + "] INFO: Server can use long format names for clipboard data."); |
| } |
| |
| if ((flags & CB_STREAM_FILECLIP_ENABLED) == CB_STREAM_FILECLIP_ENABLED) { |
| state.serverStreamFileClipEnabled = true; |
| if (verbose) |
| System.out.println("[" + this + "] INFO: Server supports stream based file clipboard operations."); |
| } |
| |
| if ((flags & CB_FILECLIP_NO_FILE_PATHS) == CB_FILECLIP_NO_FILE_PATHS) { |
| state.serverFileClipNoFilePaths = true; |
| if (verbose) |
| System.out.println("[" + this |
| + "] INFO: Server Indicates that any description of files to copy and paste MUST NOT include the source path of the files."); |
| } |
| |
| if ((flags & CB_CAN_LOCK_CLIPDATA) == CB_CAN_LOCK_CLIPDATA) { |
| state.serverCanLockClipdata = true; |
| if (verbose) |
| System.out.println("[" + this + "] INFO: Server can lock and unlock file streams on the clipboard."); |
| } |
| |
| } |
| |
| /** |
| * Example. |
| */ |
| public static void main(String[] args) { |
| // System.setProperty("streamer.Link.debug", "true"); |
| System.setProperty("streamer.Element.debug", "true"); |
| // System.setProperty("streamer.Pipeline.debug", "true"); |
| |
| /* @formatter:off */ |
| byte[] packet = new byte[] { |
| 0x07, 0x00, // CLIPRDR_HEADER::msgType = CB_CLIP_CAPS (7) |
| 0x00, 0x00, // CLIPRDR_HEADER::msgFlags = 0 |
| 0x10, 0x00, 0x00, 0x00, // CLIPRDR_HEADER::dataLen = 0x10 = 16 bytes |
| 0x01, 0x00, // CLIPRDR_CAPS::cCapabilitiesSets = 1 |
| 0x00, 0x00, // CLIPRDR_CAPS::pad1 |
| 0x01, 0x00, // CLIPRDR_CAPS_SET::capabilitySetType = CB_CAPSTYPE_GENERAL (1) |
| 0x0c, 0x00, // CLIPRDR_CAPS_SET::lengthCapability = 0x0c = 12 bytes |
| 0x02, 0x00, 0x00, 0x00, // CLIPRDR_GENERAL_CAPABILITY::version = CB_CAPS_VERSION_2 (2) |
| 0x0e, 0x00, 0x00, 0x00, // CLIPRDR_GENERAL_CAPABILITY::capabilityFlags = 0x0000000e = 0x02 |0x04 |0x08 = CB_USE_LONG_FORMAT_NAMES | CB_STREAM_FILECLIP_ENABLED | CB_FILECLIP_NO_FILE_PATHS |
| }; |
| /* @formatter:on */ |
| |
| MockSource source = new MockSource("source", ByteBuffer.convertByteArraysToByteBuffers(packet)); |
| Element router = new ServerClipRdrChannelRouter("router"); |
| ClipboardState state = new ClipboardState(); |
| Element clip_cap = new ServerClipboardCapabilitiesPDU("clip_cap", state); |
| Element sink = new MockSink("sink", new ByteBuffer[] {}); |
| |
| Pipeline pipeline = new PipelineImpl("test"); |
| pipeline.add(source, router, clip_cap, sink); |
| pipeline.link("source", "router >clipboard_capabilities", "clip_cap", "sink"); |
| pipeline.runMainLoop("source", STDOUT, false, false); |
| |
| // Check state |
| if (!state.serverUseLongFormatNames || !state.serverStreamFileClipEnabled || !state.serverFileClipNoFilePaths || state.serverCanLockClipdata) |
| throw new RuntimeException("Server clipboard capabilities packet parsed incorrectly."); |
| |
| } |
| |
| } |