mirror of
https://github.com/esiur/esiur-dart.git
synced 2025-05-06 04:02:57 +00:00
514 lines
16 KiB
Dart
514 lines
16 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/TransmissionType.dart';
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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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class IIPPacket {
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int report = 0;
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int command = 0;
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int action = 0;
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int event = 0;
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int previousCommand = 0;
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int previousAction = 0;
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int previousEvent = 0;
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int resourceId = 0;
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int newResourceId = 0;
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int childId = 0;
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int storeId = 0;
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int resourceAge = 0;
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//DC content = DC(0);
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int errorCode = 0;
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String errorMessage = "";
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String className = "";
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String resourceLink = "";
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Guid classId = Guid(DC(0));
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int methodIndex = 0;
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String methodName = "";
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int callbackId = 0;
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int progressValue = 0;
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int progressMax = 0;
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DateTime fromDate = DateTime(2000);
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DateTime toDate = DateTime(2000);
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int fromAge = 0;
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int toAge = 0;
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String resourceName = "";
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TransmissionType? dataType;
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int _dataLengthNeeded = 0;
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int _originalOffset = 0;
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bool _notEnough(int offset, int ends, int needed) {
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if (offset + needed > ends) {
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_dataLengthNeeded = needed - (ends - offset);
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//_dataLengthNeeded = (needed - (ends - offset)) + (offset - _originalOffset);
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return true;
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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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_originalOffset = offset;
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if (_notEnough(offset, ends, 1)) 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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event = (data[offset++] & 0x3f);
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if (_notEnough(offset, ends, 4)) return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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} else if (command == IIPPacketCommand.Report) {
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report = (data[offset++] & 0x3f);
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if (_notEnough(offset, ends, 4)) return -_dataLengthNeeded;
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callbackId = data.getUint32(offset);
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offset += 4;
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} else {
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previousAction = action;
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action = (data[offset++] & 0x3f);
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if (_notEnough(offset, ends, 4)) 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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if (event == IIPPacketEvent.ResourceReassigned) {
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if (_notEnough(offset, ends, 4)) return -_dataLengthNeeded;
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newResourceId = data.getUint32(offset);
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offset += 4;
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} else if (event == IIPPacketEvent.ResourceDestroyed) {
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// nothing to parse
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} else if (event == IIPPacketEvent.ChildAdded ||
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event == IIPPacketEvent.ChildRemoved) {
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if (_notEnough(offset, ends, 4)) return -_dataLengthNeeded;
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childId = data.getUint32(offset);
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offset += 4;
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} else if (event == IIPPacketEvent.Renamed) {
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if (_notEnough(offset, ends, 2)) 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)) return -_dataLengthNeeded;
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resourceName = data.getString(offset, cl);
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offset += cl;
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} else if (event == IIPPacketEvent.PropertyUpdated ||
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event == IIPPacketEvent.EventOccurred) {
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if (_notEnough(offset, ends, 2)) return -_dataLengthNeeded;
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methodIndex = data[offset++];
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var parsed = TransmissionType.parse(data, offset, ends);
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if (parsed.type == null) return -parsed.size;
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dataType = parsed.type;
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offset += parsed.size;
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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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// 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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// Attribute
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else if (event == IIPPacketEvent.AttributesUpdated) {
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if (_notEnough(offset, ends, 4)) 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)) return -_dataLengthNeeded;
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//@TODO: fix this
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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 (command == IIPPacketCommand.Request) {
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if (action == IIPPacketAction.AttachResource) {
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if (_notEnough(offset, ends, 4)) return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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} else if (action == IIPPacketAction.ReattachResource) {
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if (_notEnough(offset, ends, 12)) 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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} else if (action == IIPPacketAction.DetachResource) {
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if (_notEnough(offset, ends, 4)) return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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} else if (action == IIPPacketAction.CreateResource) {
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if (_notEnough(offset, ends, 12)) 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)) return -_dataLengthNeeded;
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//@TODO: fix this
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//content = data.clip(offset, cl);
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} else if (action == IIPPacketAction.DeleteResource) {
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if (_notEnough(offset, ends, 4)) return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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} else if (action == IIPPacketAction.AddChild ||
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action == IIPPacketAction.RemoveChild) {
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if (_notEnough(offset, ends, 8)) 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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} else if (action == IIPPacketAction.RenameResource) {
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if (_notEnough(offset, ends, 6)) 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)) return -_dataLengthNeeded;
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resourceName = data.getString(offset, cl);
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offset += cl;
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} else if (action == IIPPacketAction.TemplateFromClassName) {
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if (_notEnough(offset, ends, 1)) return -_dataLengthNeeded;
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var cl = data[offset++];
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if (_notEnough(offset, ends, cl)) return -_dataLengthNeeded;
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className = data.getString(offset, cl);
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offset += cl;
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} else if (action == IIPPacketAction.TemplateFromClassId) {
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if (_notEnough(offset, ends, 16)) return -_dataLengthNeeded;
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classId = data.getGuid(offset);
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offset += 16;
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} else if (action == IIPPacketAction.TemplateFromResourceId) {
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if (_notEnough(offset, ends, 4)) return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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} else if (action == IIPPacketAction.QueryLink ||
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action == IIPPacketAction.LinkTemplates) {
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if (_notEnough(offset, ends, 2)) 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)) return -_dataLengthNeeded;
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resourceLink = data.getString(offset, cl);
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offset += cl;
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} else if (action == IIPPacketAction.ResourceChildren ||
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action == IIPPacketAction.ResourceParents) {
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if (_notEnough(offset, ends, 4)) return -_dataLengthNeeded;
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resourceId = data.getUint32(offset);
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offset += 4;
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} else if (action == IIPPacketAction.ResourceHistory) {
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if (_notEnough(offset, ends, 20)) 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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} else if (action == IIPPacketAction.InvokeFunction) {
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if (_notEnough(offset, ends, 6)) 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 parsed = TransmissionType.parse(data, offset, ends);
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if (parsed.type == null) return -parsed.size;
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dataType = parsed.type;
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offset += parsed.size;
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} else if (action == IIPPacketAction.Listen ||
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action == IIPPacketAction.Unlisten) {
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if (_notEnough(offset, ends, 5)) 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.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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if (_notEnough(offset, ends, 6)) 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 parsed = TransmissionType.parse(data, offset, ends);
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if (parsed.type == null) return -parsed.size;
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dataType = parsed.type;
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offset += parsed.size;
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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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if (_notEnough(offset, ends, 8)) 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)) return -_dataLengthNeeded;
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//@TODO: fix this
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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 (command == IIPPacketCommand.Reply) {
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if (action == IIPPacketAction.AttachResource ||
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action == IIPPacketAction.ReattachResource) {
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if (_notEnough(offset, ends, 26)) 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)) return -_dataLengthNeeded;
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resourceLink = data.getString(offset, cl);
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offset += cl;
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var parsed = TransmissionType.parse(data, offset, ends);
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if (parsed.type == null) return -parsed.size;
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dataType = parsed.type;
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offset += parsed.size;
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} else if (action == IIPPacketAction.DetachResource) {
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// nothing to do
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} else if (action == IIPPacketAction.CreateResource) {
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if (_notEnough(offset, ends, 20)) 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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} else if (action == IIPPacketAction.DetachResource) {
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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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action == IIPPacketAction.LinkTemplates
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// Attribute
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||
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action == IIPPacketAction.GetAllAttributes ||
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action == IIPPacketAction.GetAttributes) {
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if (_notEnough(offset, ends, 1)) return -_dataLengthNeeded;
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var parsed = TransmissionType.parse(data, offset, ends);
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if (parsed.type == null) return -parsed.size;
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dataType = parsed.type;
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offset += parsed.size;
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} else if (action == IIPPacketAction.InvokeFunction)
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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)) return -_dataLengthNeeded;
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var parsed = TransmissionType.parse(data, offset, ends);
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if (parsed.type == null) return -parsed.size;
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dataType = parsed.type;
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offset += parsed.size;
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} else if (action == IIPPacketAction.SetProperty ||
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action == IIPPacketAction.Listen ||
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action == IIPPacketAction.Unlisten) {
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// nothing to do
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}
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} else if (command == IIPPacketCommand.Report) {
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if (report == IIPPacketReport.ManagementError) {
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if (_notEnough(offset, ends, 2)) return -_dataLengthNeeded;
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errorCode = data.getUint16(offset);
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offset += 2;
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} else if (report == IIPPacketReport.ExecutionError) {
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if (_notEnough(offset, ends, 2)) return -_dataLengthNeeded;
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errorCode = data.getUint16(offset);
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offset += 2;
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if (_notEnough(offset, ends, 2)) 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)) return -_dataLengthNeeded;
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errorMessage = data.getString(offset, cl);
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offset += cl;
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} else if (report == IIPPacketReport.ProgressReport) {
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if (_notEnough(offset, ends, 8)) return -_dataLengthNeeded;
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progressValue = data.getInt32(offset);
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offset += 4;
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progressMax = data.getInt32(offset);
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offset += 4;
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} else if (report == IIPPacketReport.ChunkStream) {
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if (_notEnough(offset, ends, 1)) return -_dataLengthNeeded;
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var parsed = TransmissionType.parse(data, offset, ends);
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if (parsed.type == null) return -parsed.size;
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dataType = parsed.type;
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offset += parsed.size;
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}
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}
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return offset - _originalOffset;
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}
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toString() {
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var rt = command.toString();
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if (command == IIPPacketCommand.Event) {
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rt += " " + event.toString();
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} else if (command == IIPPacketCommand.Request) {
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rt += " " + action.toString();
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if (action == IIPPacketAction.AttachResource) {
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rt +=
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" CID: " + callbackId.toString() + " RID: " + resourceId.toString();
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}
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} else if (command == IIPPacketCommand.Reply)
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rt += " " + action.toString();
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else if (command == IIPPacketCommand.Report) rt += " " + report.toString();
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return rt;
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}
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}
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