mirror of
https://github.com/esiur/esiur-dart.git
synced 2025-05-06 12:02:57 +00:00
728 lines
21 KiB
Dart
728 lines
21 KiB
Dart
/*
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Copyright (c) 2019 Ahmed Kh. Zamil
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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import '../../Data/DC.dart';
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import '../../Data/Guid.dart';
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import 'IIPPacketAction.dart';
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import 'IIPPacketCommand.dart';
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import 'IIPPacketEvent.dart';
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import 'IIPPacketReport.dart';
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import '../../Data/Codec.dart';
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import '../../Data/DataType.dart';
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class IIPPacket
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{
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int report;
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int command;
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int action;
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int event;
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int previousCommand;
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int previousAction;
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int previousEvent;
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int resourceId;
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int newResourceId;
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int childId;
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int storeId;
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int resourceAge;
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DC content;
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int errorCode;
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String errorMessage;
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String className ;
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String resourceLink ;
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Guid classId ;
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int methodIndex ;
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String methodName;
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int callbackId ;
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int progressValue;
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int progressMax ;
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DateTime fromDate ;
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DateTime toDate;
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int fromAge;
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int toAge;
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int _dataLengthNeeded;
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int _originalOffset;
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bool _notEnough(int offset, int ends, int needed)
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{
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if (offset + needed > ends)
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{
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//dataLengthNeeded = needed - (ends - offset);
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_dataLengthNeeded = needed - (ends - _originalOffset);
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return true;
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}
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else
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return false;
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}
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int parse(DC data, int offset, int ends)
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{
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_originalOffset = offset;
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if (_notEnough(offset, ends, 1))
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return -_dataLengthNeeded;
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previousCommand = command;
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command = (data[offset] >> 6);
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if (command == IIPPacketCommand.Event)
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{
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event = (data[offset++] & 0x3f);
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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}
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else if (command == IIPPacketCommand.Report)
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{
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report = (data[offset++] & 0x3f);
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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callbackId = data.getUint32(offset);
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offset += 4;
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}
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else
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{
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previousAction = action;
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action = (data[offset++] & 0x3f);
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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callbackId = data.getUint32(offset);
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offset += 4;
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}
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if (command == IIPPacketCommand.Event)
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{
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if (event == IIPPacketEvent.ResourceReassigned)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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newResourceId = data.getUint32( offset);
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offset += 4;
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}
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else if (event == IIPPacketEvent.ResourceDestroyed)
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{
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// nothing to parse
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}
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else if (event == IIPPacketEvent.ChildAdded
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|| event == IIPPacketEvent.ChildRemoved)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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childId = data.getUint32(offset);
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offset += 4;
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}
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else if(event == IIPPacketEvent.Renamed)
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{
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if (_notEnough(offset, ends, 2))
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return -_dataLengthNeeded;
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var cl = data.getUint16(offset);
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offset += 2;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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content = data.clip(offset, cl);
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offset += cl;
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}
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else if (event == IIPPacketEvent.PropertyUpdated)
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{
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if (_notEnough(offset, ends, 2))
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return -_dataLengthNeeded;
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methodIndex = data[offset++];
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var dt = data[offset++];
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var size = DataType.size(dt);
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if (size < 0)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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var cl = data.getUint32( offset);
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offset += 4;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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content = data.clip( offset - 5, cl + 5);
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offset += cl;
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}
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else
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{
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if (_notEnough(offset, ends, size))
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return -_dataLengthNeeded;
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content = data.clip(offset - 1, size + 1);
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offset += size;
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}
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}
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else if (event == IIPPacketEvent.EventOccurred)
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{
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if (_notEnough(offset, ends, 5))
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return -_dataLengthNeeded;
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methodIndex = data[offset++];
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var cl = data.getUint32( offset);
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offset += 4;
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content = data.clip(offset, cl);
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offset += cl;
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}
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// Attribute
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else if (event == IIPPacketEvent.AttributesUpdated)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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var cl = data.getUint32(offset);
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offset += 4;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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content = data.clip(offset, cl);
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offset += cl;
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}
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}
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else if (command == IIPPacketCommand.Request)
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{
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if (action == IIPPacketAction.AttachResource)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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}
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else if (action == IIPPacketAction.ReattachResource)
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{
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if (_notEnough(offset, ends, 12))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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resourceAge = data.getUint64(offset);
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offset += 8;
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}
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else if (action == IIPPacketAction.DetachResource)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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}
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else if (action == IIPPacketAction.CreateResource)
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{
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if (_notEnough(offset, ends, 12))
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return -_dataLengthNeeded;
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storeId = data.getUint32(offset);
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offset += 4;
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resourceId = data.getUint32(offset);
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offset += 4;
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var cl = data.getUint32(offset);
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offset += 4;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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content = data.clip(offset, cl);
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}
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else if (action == IIPPacketAction.DeleteResource)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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}
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else if (action == IIPPacketAction.AddChild
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|| action == IIPPacketAction.RemoveChild)
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{
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if (_notEnough(offset, ends, 8))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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childId = data.getUint32(offset);
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offset += 4;
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}
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else if (action == IIPPacketAction.RenameResource)
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{
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if (_notEnough(offset, ends, 6))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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var cl = data.getUint16(offset);
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offset += 2;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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content = data.clip(offset, cl);
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offset += cl;
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}
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else if (action == IIPPacketAction.TemplateFromClassName)
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{
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if (_notEnough(offset, ends, 1))
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return -_dataLengthNeeded;
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var cl = data[offset++];
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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className = data.getString(offset, cl);
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offset += cl;
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}
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else if (action == IIPPacketAction.TemplateFromClassId)
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{
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if (_notEnough(offset, ends, 16))
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return -_dataLengthNeeded;
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classId = data.getGuid(offset);
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offset += 16;
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}
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else if (action == IIPPacketAction.TemplateFromResourceId)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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}
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else if (action == IIPPacketAction.QueryLink)
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{
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if (_notEnough(offset, ends, 2))
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return -_dataLengthNeeded;
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var cl = data.getUint16(offset);
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offset += 2;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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resourceLink = data.getString(offset, cl);
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offset += cl;
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}
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else if (action == IIPPacketAction.ResourceChildren
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|| action == IIPPacketAction.ResourceParents)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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}
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else if (action == IIPPacketAction.ResourceHistory)
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{
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if (_notEnough(offset, ends, 20))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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fromDate = data.getDateTime(offset);
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offset += 8;
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toDate = data.getDateTime(offset);
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offset += 8;
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}
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else if (action == IIPPacketAction.InvokeFunctionArrayArguments
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|| action == IIPPacketAction.InvokeFunctionNamedArguments)
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{
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if (_notEnough(offset, ends, 9))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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methodIndex = data[offset++];
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var cl = data.getUint32(offset);
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offset += 4;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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content = data.clip(offset, cl);
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offset += cl;
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}
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else if (action == IIPPacketAction.GetProperty)
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{
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if (_notEnough(offset, ends, 5))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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methodIndex = data[offset++];
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}
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else if (action == IIPPacketAction.GetPropertyIfModified)
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{
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if (_notEnough(offset, ends, 9))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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methodIndex = data[offset++];
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resourceAge = data.getUint64(offset);
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offset += 8;
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}
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else if (action == IIPPacketAction.SetProperty)
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{
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if (_notEnough(offset, ends, 6))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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methodIndex = data[offset++];
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var dt = data[offset++];
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var size = DataType.size(dt);
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if (size < 0)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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var cl = data.getUint32(offset);
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offset += 4;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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content = data.clip(offset-5, cl + 5);
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offset += cl;
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}
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else
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{
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if (_notEnough(offset, ends, size))
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return -_dataLengthNeeded;
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content = data.clip(offset-1, size + 1);
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offset += size;
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}
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}
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// Attributes
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else if (action == IIPPacketAction.UpdateAllAttributes
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|| action == IIPPacketAction.GetAttributes
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|| action == IIPPacketAction.UpdateAttributes
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|| action == IIPPacketAction.ClearAttributes)
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{
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if (_notEnough(offset, ends, 8))
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return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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var cl = data.getUint32(offset);
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offset += 4;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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content = data.clip(offset, cl);
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offset += cl;
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}
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}
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else if (command == IIPPacketCommand.Reply)
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{
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if (action == IIPPacketAction.AttachResource
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|| action == IIPPacketAction.ReattachResource)
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{
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if (_notEnough(offset, ends, 26))
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return -_dataLengthNeeded;
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classId = data.getGuid(offset);
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offset += 16;
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resourceAge = data.getUint64(offset);
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offset += 8;
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var cl = data.getUint16(offset);
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offset += 2;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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resourceLink = data.getString(offset, cl);
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offset += cl;
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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cl = data.getUint32(offset);
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offset += 4;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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content = data.clip(offset, cl);
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offset += cl;
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}
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else if (action == IIPPacketAction.DetachResource)
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{
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// nothing to do
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}
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else if (action == IIPPacketAction.CreateResource)
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{
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if (_notEnough(offset, ends, 20))
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return -_dataLengthNeeded;
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//ClassId = data.GetGuid(offset);
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//offset += 16;
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resourceId = data.getUint32(offset);
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offset += 4;
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}
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else if (action == IIPPacketAction.DetachResource)
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{
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// nothing to do
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}
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// Inquire
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else if (action == IIPPacketAction.TemplateFromClassName
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|| action == IIPPacketAction.TemplateFromClassId
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|| action == IIPPacketAction.TemplateFromResourceId
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|| action == IIPPacketAction.QueryLink
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|| action == IIPPacketAction.ResourceChildren
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|| action == IIPPacketAction.ResourceParents
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|| action == IIPPacketAction.ResourceHistory
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// Attribute
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|| action == IIPPacketAction.GetAllAttributes
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|| action == IIPPacketAction.GetAttributes)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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var cl = data.getUint32(offset);
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offset += 4;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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content = data.clip(offset, cl);
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offset += cl;
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}
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else if (action == IIPPacketAction.InvokeFunctionArrayArguments
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|| action == IIPPacketAction.InvokeFunctionNamedArguments
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|| action == IIPPacketAction.GetProperty
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|| action == IIPPacketAction.GetPropertyIfModified)
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{
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if (_notEnough(offset, ends, 1))
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return -_dataLengthNeeded;
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var dt = data[offset++];
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var size = DataType.size(dt);
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if (size < 0)
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{
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if (_notEnough(offset, ends, 4))
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return -_dataLengthNeeded;
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var cl = data.getUint32(offset);
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offset += 4;
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if (_notEnough(offset, ends, cl))
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return -_dataLengthNeeded;
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content = data.clip(offset - 5, cl + 5);
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offset += cl;
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}
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else
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{
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if (_notEnough(offset, ends, size))
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return -_dataLengthNeeded;
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content = data.clip(offset - 1, size + 1);
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offset += size;
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|
}
|
|
}
|
|
else if (action == IIPPacketAction.SetProperty)
|
|
{
|
|
// nothing to do
|
|
}
|
|
}
|
|
else if (command == IIPPacketCommand.Report)
|
|
{
|
|
if (report == IIPPacketReport.ManagementError)
|
|
{
|
|
if (_notEnough(offset, ends, 2))
|
|
return -_dataLengthNeeded;
|
|
|
|
errorCode = data.getUint16(offset);
|
|
offset += 2;
|
|
}
|
|
else if (report == IIPPacketReport.ExecutionError)
|
|
{
|
|
if (_notEnough(offset, ends, 2))
|
|
return -_dataLengthNeeded;
|
|
|
|
errorCode = data.getUint16(offset);
|
|
offset += 2;
|
|
|
|
if (_notEnough(offset, ends, 2))
|
|
return -_dataLengthNeeded;
|
|
|
|
var cl = data.getUint16(offset);
|
|
offset += 2;
|
|
|
|
if (_notEnough(offset, ends, cl))
|
|
return -_dataLengthNeeded;
|
|
|
|
errorMessage = data.getString(offset, cl);
|
|
offset += cl;
|
|
}
|
|
else if (report == IIPPacketReport.ProgressReport)
|
|
{
|
|
if (_notEnough(offset, ends, 8))
|
|
return -_dataLengthNeeded;
|
|
|
|
progressValue = data.getInt32(offset);
|
|
offset += 4;
|
|
progressMax = data.getInt32(offset);
|
|
offset += 4;
|
|
}
|
|
else if (report == IIPPacketReport.ChunkStream)
|
|
{
|
|
if (_notEnough(offset, ends, 1))
|
|
return -_dataLengthNeeded;
|
|
|
|
var dt = data[offset++];
|
|
var size = DataType.size(dt);
|
|
|
|
if (size < 0)
|
|
{
|
|
if (_notEnough(offset, ends, 4))
|
|
return -_dataLengthNeeded;
|
|
|
|
var cl = data.getUint32(offset);
|
|
offset += 4;
|
|
|
|
if (_notEnough(offset, ends, cl))
|
|
return -_dataLengthNeeded;
|
|
|
|
content = data.clip(offset - 5, cl + 5);
|
|
offset += cl;
|
|
}
|
|
else
|
|
{
|
|
if (_notEnough(offset, ends, size))
|
|
return -_dataLengthNeeded;
|
|
|
|
content = data.clip(offset - 1, size + 1);
|
|
offset += size;
|
|
}
|
|
}
|
|
}
|
|
|
|
return offset - _originalOffset;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
toString()
|
|
{
|
|
var rt = command.toString();
|
|
|
|
if (command == IIPPacketCommand.Event)
|
|
{
|
|
rt += " " + event.toString();
|
|
}
|
|
else if (command == IIPPacketCommand.Request)
|
|
{
|
|
rt += " " + action.toString();
|
|
if (action == IIPPacketAction.AttachResource)
|
|
{
|
|
rt += " CID: " + callbackId.toString() + " RID: " + resourceId.toString();
|
|
}
|
|
}
|
|
else if (command == IIPPacketCommand.Reply)
|
|
rt += " " + action.toString();
|
|
else if (command == IIPPacketCommand.Report)
|
|
rt += " " + report.toString();
|
|
|
|
return rt;
|
|
}
|
|
|
|
}
|