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Use MD5 for single instance path

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JustArchi
2020-05-22 00:04:04 +02:00
parent 8db90b6c2f
commit 5a2caab7fc
1 changed files with 9 additions and 1 deletions
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10
ArchiSteamFarm/OS.cs
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@@ -23,6 +23,7 @@ using System;
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
@@ -114,7 +115,14 @@ namespace ArchiSteamFarm {
return false;
}
string uniqueName = "Global\\" + GetOsResourceName(nameof(SingleInstance)) + "-" + BitConverter.ToString(Encoding.UTF8.GetBytes(Directory.GetCurrentDirectory())).Replace("-", "");
string uniqueName;
// The only purpose of using hashingAlgorithm here is to cut on a potential size of the resource name - paths can be really long, and we almost certainly have some upper limit on the resource name we can allocate
// At the same time it'd be the best if we avoided all special characters, such as '/' found e.g. in base64, as we can't be sure that it's not a prohibited character in regards to native OS implementation
// Because of that, MD5 is sufficient for our case, as it generates alphanumeric characters only, and is barely 128-bit long. We don't need any kind of complex cryptography or collision detection here, any hashing algorithm will do, and the shorter the better
using (MD5 hashingAlgorithm = MD5.Create()) {
uniqueName = "Global\\" + GetOsResourceName(nameof(SingleInstance)) + "-" + BitConverter.ToString(hashingAlgorithm.ComputeHash(Encoding.UTF8.GetBytes(Directory.GetCurrentDirectory()))).Replace("-", "");
}
Mutex singleInstance = new Mutex(true, uniqueName, out bool result);