SabreTools/BinaryObjectScanner
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Make large file parsing safer (fixes #44)

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This commit is contained in:
Matt Nadareski
2021-07-15 09:57:06 -07:00
parent c74b5b3d29
commit 7024136919
1 changed files with 13 additions and 5 deletions
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18
BurnOutSharp/FileType/Executable.cs
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@@ -63,20 +63,28 @@ namespace BurnOutSharp.FileType
/// <inheritdoc/>
public Dictionary<string, List<string>> Scan(Scanner scanner, Stream stream, string file)
{
// Files can be protected in multiple ways
var protections = new Dictionary<string, List<string>>();
// Load the current file content
byte[] fileContent = null;
using (BinaryReader br = new BinaryReader(stream, Encoding.Default, true))
try
{
fileContent = br.ReadBytes((int)stream.Length);
using (BinaryReader br = new BinaryReader(stream, Encoding.Default, true))
{
fileContent = br.ReadBytes((int)stream.Length);
}
}
catch
{
Utilities.AppendToDictionary(protections, file, "[File too large to be scanned]");
return protections;
}
// If we can, seek to the beginning of the stream
if (stream.CanSeek)
stream.Seek(0, SeekOrigin.Begin);
// Files can be protected in multiple ways
var protections = new Dictionary<string, List<string>>();
// Iterate through all content checks
foreach (var contentCheckClass in contentCheckClasses)
{