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Add support for hashing partial IDFiles.

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This commit is contained in:
Paul Chote
2016-12-17 17:24:04 +00:00
parent f8d0dcad4f
commit e30ca88797
2 changed files with 28 additions and 4 deletions
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25
OpenRA.Mods.Common/Widgets/Logic/Installation/InstallFromDiscLogic.cs
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@@ -505,15 +505,34 @@ namespace OpenRA.Mods.Common.Widgets.Logic
{
try
{
foreach (var kv in source.IDFiles)
foreach (var kv in source.IDFiles.Nodes)
{
var filePath = Path.Combine(path, kv.Key);
if (!File.Exists(filePath))
return false;
using (var fileStream = File.OpenRead(filePath))
if (CryptoUtil.SHA1Hash(fileStream) != kv.Value)
return false;
{
var offsetNode = kv.Value.Nodes.FirstOrDefault(n => n.Key == "Offset");
var lengthNode = kv.Value.Nodes.FirstOrDefault(n => n.Key == "Length");
if (offsetNode != null || lengthNode != null)
{
var offset = 0L;
if (offsetNode != null)
offset = FieldLoader.GetValue<long>("Offset", offsetNode.Value.Value);
var length = fileStream.Length - offset;
if (lengthNode != null)
length = FieldLoader.GetValue<long>("Length", lengthNode.Value.Value);
fileStream.Position = offset;
var data = fileStream.ReadBytes((int)length);
if (CryptoUtil.SHA1Hash(data) != kv.Value.Value)
return false;
}
else if (CryptoUtil.SHA1Hash(fileStream) != kv.Value.Value)
return false;
}
}
}
catch (Exception)