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duck tape tier quality(TM)

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This commit is contained in:
Mino 2020-03-14 14:45:12 +09:00
parent 33145ea0f2
commit c1ed673f22
5 changed files with 44 additions and 32 deletions
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29
Dalamud.Bootstrap/SqexArg/EncodedArgument.cs
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@ -27,37 +27,34 @@ namespace Dalamud.Bootstrap.SqexArg
m_key = key;
}
public static bool TryParse(string argument, out EncodedArgument? value)
/// <summary>
///
/// </summary>
/// <param name="argument"></param>
/// <returns></returns>
public static EncodedArgument Parse(string argument)
{
if (argument.Length <= 17)
{
// does not contain: //**sqex0003 + payload + checksum + **//
value = null;
return false;
var exMessage = $"The string ({argument}) is too short to parse encoded argument.";
throw new SqexArgException(exMessage);
}
if (!argument.StartsWith("//**sqex0003") || !argument.EndsWith("**//"))
{
value = null;
return false;
var exMessage = $"The string ({argument}) doesn't look like valid encoded argument format."
+ $"It either doesn't start with //**sqeex003 or end with **// marker.";
throw new SqexArgException(exMessage);
}
var checksum = argument[^5];
var payload = DecodeUrlSafeBase64(argument.Substring(12, argument.Length - 1 - 12 - 4)); // //**sqex0003, checksum, **//
if (!FindPartialKey(checksum, out var partialKey))
{
value = null;
return false;
}
for (var i = 0u; i <= 0xFFF; i++)
{
var key = (i << 20) | partialKey;
}
// ...
}
private static bool FindPartialKey(char checksum, out uint recoveredKey)
private static bool GetKeyFragmentFromChecksum(char checksum, out uint recoveredKey)
{
var index = MemoryExtensions.IndexOf(ChecksumTable, checksum);