402 lines
13 KiB
C#
402 lines
13 KiB
C#
// <copyright file="PacketTwisterOfChatInvitationRequest.cs" company="MUnique">
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// Licensed under the MIT License. See LICENSE file in the project root for full license information.
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// </copyright>
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namespace MUnique.OpenMU.Network.PacketTwister;
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/// <summary>
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/// PacketTwister implementation for packets of 'ChatInvitationRequest' type.
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/// </summary>
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internal class PacketTwisterOfChatInvitationRequest : IPacketTwister
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{
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/// <inheritdoc/>
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public void Twist(Span<byte> data)
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{
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if (data.Length >= 4)
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{
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if (data.Length >= 8)
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{
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if (data.Length >= 16)
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{
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if (data.Length >= 32)
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{
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var v21 = (byte)((data[25] >> 1) & 1);
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if (((data[25] >> 1) & 1) != 0)
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{
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data[25] |= 2;
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}
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else
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{
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data[25] &= 0xFD;
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}
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if (v21 != 0)
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{
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data[25] |= 2;
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}
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else
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{
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data[25] &= 0xFD;
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}
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data[7] ^= 0x49;
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var v14 = (byte)(data[0] >> 6);
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data[0] *= 4;
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data[0] |= v14;
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var v15 = (byte)(data[4] >> 2);
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data[4] <<= 6;
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data[4] |= v15;
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var v16 = (byte)(data[7] >> 6);
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data[7] *= 4;
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data[7] |= v16;
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var v17 = (byte)(data[16] >> 6);
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data[16] *= 4;
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data[16] |= v17;
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var v20 = (byte)((data[2] >> 7) & 1);
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if (((data[2] >> 5) & 1) != 0)
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{
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data[2] |= 0x80;
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}
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else
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{
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data[2] &= 0x7F;
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}
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if (v20 != 0)
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{
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data[2] |= 0x20;
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}
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else
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{
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data[2] &= 0xDF;
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}
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var v19 = (byte)((data[12] >> 7) & 1);
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if (((data[12] >> 3) & 1) != 0)
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{
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data[12] |= 0x80;
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}
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else
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{
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data[12] &= 0x7F;
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}
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if (v19 != 0)
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{
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data[12] |= 8;
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}
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else
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{
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data[12] &= 0xF7;
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}
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data[25] ^= 0xB;
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var v18 = data[31];
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data[31] = data[22];
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data[22] = v18;
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}
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else
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{
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data[7] ^= 0x79;
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data[12] ^= 0x2E;
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var v10 = data[3];
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data[3] = data[6];
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data[6] = v10;
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var v11 = data[14];
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data[14] = data[13];
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data[13] = v11;
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var v12 = (byte)(data[14] >> 4);
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data[14] *= 16;
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data[14] |= v12;
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var v22 = (byte)((data[9] >> 6) & 1);
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if (((data[9] >> 5) & 1) != 0)
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{
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data[9] |= 0x40;
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}
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else
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{
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data[9] &= 0xBF;
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}
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if (v22 != 0)
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{
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data[9] |= 0x20;
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}
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else
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{
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data[9] &= 0xDF;
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}
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var v13 = (byte)(data[8] >> 3);
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data[8] *= 32;
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data[8] |= v13;
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data[11] ^= 0x52;
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}
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}
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else
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{
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var v23 = (byte)((data[4] >> 3) & 1);
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if (((data[4] >> 2) & 1) != 0)
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{
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data[4] |= 8;
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}
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else
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{
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data[4] &= 0xF7;
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}
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if (v23 != 0)
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{
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data[4] |= 4;
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}
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else
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{
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data[4] &= 0xFB;
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}
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var v8 = (byte)(data[3] >> 4);
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data[3] *= 16;
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data[3] |= v8;
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data[1] ^= 0xC9;
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data[7] ^= 0x22;
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data[3] ^= 0xE8;
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var v9 = (byte)(data[3] >> 4);
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data[3] *= 16;
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data[3] |= v9;
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}
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}
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else
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{
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var v2 = (byte)((data[0] >> 1) & 1);
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if (((data[0] >> 3) & 1) != 0)
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{
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data[0] |= 2;
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}
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else
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{
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data[0] &= 0xFD;
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}
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if (v2 != 0)
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{
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data[0] |= 8;
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}
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else
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{
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data[0] &= 0xF7;
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}
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data[3] ^= 0x41;
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var v3 = data[0];
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data[0] = data[1];
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data[1] = v3;
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var v4 = data[0];
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data[0] = data[1];
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data[1] = v4;
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var v5 = (byte)(data[3] >> 3);
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data[3] *= 32;
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data[3] |= v5;
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var v6 = (byte)(data[0] >> 4);
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data[0] *= 16;
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data[0] |= v6;
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var v7 = data[3];
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data[3] = data[0];
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data[0] = v7;
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}
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}
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}
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/// <inheritdoc/>
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public void Correct(Span<byte> data)
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{
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if (data.Length >= 4)
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{
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if (data.Length >= 8)
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{
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if (data.Length >= 16)
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{
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if (data.Length >= 32)
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{
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var v14 = data[31];
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data[31] = data[22];
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data[22] = v14;
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data[25] ^= 0xB;
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var v21 = (byte)((data[12] >> 7) & 1);
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if (((data[12] >> 3) & 1) != 0)
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{
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data[12] |= 0x80;
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}
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else
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{
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data[12] &= 0x7F;
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}
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if (v21 != 0)
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{
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data[12] |= 8;
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}
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else
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{
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data[12] &= 0xF7;
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}
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var v20 = (byte)((data[2] >> 7) & 1);
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if (((data[2] >> 5) & 1) != 0)
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{
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data[2] |= 0x80;
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}
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else
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{
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data[2] &= 0x7F;
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}
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if (v20 != 0)
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{
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data[2] |= 0x20;
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}
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else
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{
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data[2] &= 0xDF;
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}
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var v15 = (byte)(data[16] >> 2);
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data[16] <<= 6;
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data[16] |= v15;
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var v16 = (byte)(data[7] >> 2);
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data[7] <<= 6;
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data[7] |= v16;
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var v17 = (byte)(data[4] >> 6);
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data[4] *= 4;
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data[4] |= v17;
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var v18 = (byte)(data[0] >> 2);
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data[0] <<= 6;
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data[0] |= v18;
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data[7] ^= 0x49;
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var v19 = (byte)((data[25] >> 1) & 1);
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if (((data[25] >> 1) & 1) != 0)
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{
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data[25] |= 2;
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}
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else
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{
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data[25] &= 0xFD;
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}
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if (v19 != 0)
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{
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data[25] |= 2;
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}
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else
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{
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data[25] &= 0xFD;
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}
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}
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else
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{
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data[11] ^= 0x52;
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var v10 = (byte)(data[8] >> 5);
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data[8] *= 8;
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data[8] |= v10;
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var v22 = (byte)((data[9] >> 6) & 1);
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if (((data[9] >> 5) & 1) != 0)
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{
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data[9] |= 0x40;
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}
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else
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{
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data[9] &= 0xBF;
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}
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if (v22 != 0)
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{
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data[9] |= 0x20;
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}
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else
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{
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data[9] &= 0xDF;
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}
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var v11 = (byte)(data[14] >> 4);
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data[14] *= 16;
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data[14] |= v11;
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var v12 = data[14];
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data[14] = data[13];
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data[13] = v12;
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var v13 = data[3];
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data[3] = data[6];
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data[6] = v13;
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data[12] ^= 0x2E;
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data[7] ^= 0x79;
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}
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}
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else
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{
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var v8 = (byte)(data[3] >> 4);
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data[3] *= 16;
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data[3] |= v8;
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data[3] ^= 0xE8;
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data[7] ^= 0x22;
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data[1] ^= 0xC9;
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var v9 = (byte)(data[3] >> 4);
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data[3] *= 16;
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data[3] |= v9;
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var v23 = (byte)((data[4] >> 3) & 1);
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if (((data[4] >> 2) & 1) != 0)
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{
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data[4] |= 8;
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}
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else
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{
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data[4] &= 0xF7;
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}
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if (v23 != 0)
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{
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data[4] |= 4;
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}
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else
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{
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data[4] &= 0xFB;
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}
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}
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}
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else
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{
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var v3 = data[3];
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data[3] = data[0];
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data[0] = v3;
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var v4 = (byte)(data[0] >> 4);
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data[0] *= 16;
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data[0] |= v4;
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var v5 = (byte)(data[3] >> 5);
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data[3] *= 8;
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data[3] |= v5;
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var v6 = data[0];
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data[0] = data[1];
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data[1] = v6;
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var v7 = data[0];
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data[0] = data[1];
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data[1] = v7;
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data[3] ^= 0x41;
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var v2 = (byte)((data[0] >> 1) & 1);
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if (((data[0] >> 3) & 1) != 0)
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{
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data[0] |= 2;
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}
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else
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{
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data[0] &= 0xFD;
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}
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if (v2 != 0)
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{
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data[0] |= 8;
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}
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else
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{
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data[0] &= 0xF7;
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}
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}
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}
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}
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} |