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xPawxPaw
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Add appinfo v29
Requires ValveResourceFormat/ValveKeyValue#99
1 parent a8069e8 commit 56b1fec

3 files changed

Lines changed: 103 additions & 8 deletions

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‎README.md‎

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Original file line numberDiff line numberDiff line change
@@ -4,6 +4,29 @@ This is mostly intended as an example on how to read these files.
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## appinfo.vdf
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```
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uint32 - MAGIC: 29 44 56 07
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uint32 - UNIVERSE: 1
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int64 - Offset to string table from start of the file
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---- repeated app sections ----
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uint32 - AppID
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uint32 - size // until end of binary_vdf
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uint32 - infoState // mostly 2, sometimes 1 (may indicate prerelease or no info)
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uint32 - lastUpdated
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uint64 - picsToken
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20bytes - SHA1 // of text appinfo vdf, as seen in CMsgClientPICSProductInfoResponse.AppInfo.sha
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uint32 - changeNumber
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20bytes - SHA1 // of binary_vdf
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variable - binary_vdf
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---- end of section ----
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uint32 - EOF: 0
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---- offset to the string table ----
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uint32 - Count of strings
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null-term strings[count]
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```
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## appinfo.vdf (before june 2024)
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```
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uint32 - MAGIC: 28 44 56 07
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uint32 - UNIVERSE: 1
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---- repeated app sections ----

‎SteamAppInfo.sln‎

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Original file line numberDiff line numberDiff line change
@@ -1,9 +1,11 @@
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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 16
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VisualStudioVersion = 16.0.30011.22
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# Visual Studio Version 17
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VisualStudioVersion = 17.10.35013.160
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SteamAppInfoParser", "SteamAppInfoParser\SteamAppInfoParser.csproj", "{6B285D2E-0613-434D-86B5-A51CEA7D4445}"
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Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SteamAppInfoParser", "SteamAppInfoParser\SteamAppInfoParser.csproj", "{6B285D2E-0613-434D-86B5-A51CEA7D4445}"
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EndProject
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Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ValveKeyValue", "..\..\ValveResourceFormat\ValveKeyValue\ValveKeyValue\ValveKeyValue\ValveKeyValue.csproj", "{DA073F8F-2816-4F11-983E-8C0A18F290BB}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -15,6 +17,10 @@ Global
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{6B285D2E-0613-434D-86B5-A51CEA7D4445}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{6B285D2E-0613-434D-86B5-A51CEA7D4445}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{6B285D2E-0613-434D-86B5-A51CEA7D4445}.Release|Any CPU.Build.0 = Release|Any CPU
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{DA073F8F-2816-4F11-983E-8C0A18F290BB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{DA073F8F-2816-4F11-983E-8C0A18F290BB}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{DA073F8F-2816-4F11-983E-8C0A18F290BB}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{DA073F8F-2816-4F11-983E-8C0A18F290BB}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE

‎SteamAppInfoParser/AppInfo.cs‎

Lines changed: 71 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -1,13 +1,16 @@
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using System;
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using System.Buffers;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.IO;
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using System.Text;
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using ValveKeyValue;
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namespace SteamAppInfoParser
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{
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class AppInfo
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{
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private const uint Magic29 = 0x07_56_44_29;
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private const uint Magic28 = 0x07_56_44_28;
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private const uint Magic = 0x07_56_44_27;
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@@ -34,13 +37,33 @@ public void Read(Stream input)
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using var reader = new BinaryReader(input);
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var magic = reader.ReadUInt32();
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if (magic != Magic && magic != Magic28)
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if (magic != Magic && magic != Magic28 && magic != Magic29)
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{
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throw new InvalidDataException($"Unknown magic header: {magic:X}");
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}
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Universe = (EUniverse)reader.ReadUInt32();
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var options = new KVSerializerOptions();
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if (magic == Magic29)
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{
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var stringTableOffset = reader.ReadInt64();
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var offset = reader.BaseStream.Position;
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reader.BaseStream.Position = stringTableOffset;
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var stringCount = reader.ReadUInt32();
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var stringPool = new string[stringCount];
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for (var i = 0; i < stringCount; i++)
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{
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stringPool[i] = ReadNullTermUtf8String(reader.BaseStream);
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}
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reader.BaseStream.Position = offset;
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options.StringPool = stringPool;
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}
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var deserializer = KVSerializer.Create(KVSerializationFormat.KeyValues1Binary);
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do
@@ -52,7 +75,8 @@ public void Read(Stream input)
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break;
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}
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reader.ReadUInt32(); // size until end of Data
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var size = reader.ReadUInt32(); // size until end of Data
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var end = reader.BaseStream.Position + size;
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var app = new App
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{
@@ -64,20 +88,62 @@ public void Read(Stream input)
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ChangeNumber = reader.ReadUInt32(),
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};
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if (magic == Magic28)
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if (magic == Magic28 || magic == Magic29)
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{
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app.BinaryDataHash = new ReadOnlyCollection<byte>(reader.ReadBytes(20));
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}
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app.Data = deserializer.Deserialize(input);
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app.Data = deserializer.Deserialize(input, options);
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if (reader.BaseStream.Position != end)
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{
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throw new InvalidDataException();
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}
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Apps.Add(app);
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} while (true);
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}
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public static DateTime DateTimeFromUnixTime(uint unixTime)
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private static DateTime DateTimeFromUnixTime(uint unixTime)
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{
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return new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc).AddSeconds(unixTime);
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}
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private static string ReadNullTermUtf8String(Stream stream)
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{
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var buffer = ArrayPool<byte>.Shared.Rent(32);
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try
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{
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var position = 0;
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do
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{
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var b = stream.ReadByte();
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if (b <= 0) // null byte or stream ended
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{
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break;
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}
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if (position >= buffer.Length)
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{
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var newBuffer = ArrayPool<byte>.Shared.Rent(buffer.Length * 2);
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Buffer.BlockCopy(buffer, 0, newBuffer, 0, buffer.Length);
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ArrayPool<byte>.Shared.Return(buffer);
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buffer = newBuffer;
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}
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buffer[position++] = (byte)b;
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}
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while (true);
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return Encoding.UTF8.GetString(buffer[..position]);
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}
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finally
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{
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ArrayPool<byte>.Shared.Return(buffer);
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}
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}
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}
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}

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