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Improve get auth header parts using substring

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This commit is contained in:
Tommaso Stocchi 2021-01-02 18:18:47 +01:00
parent 7c7f2316fa
commit a03880b687
1 changed files with 22 additions and 27 deletions
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49
Emby.Server.Implementations/HttpServer/Security/AuthorizationContext.cs
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@ -273,7 +273,7 @@ namespace Emby.Server.Implementations.HttpServer.Security
{
var param = item.Trim().Split('=', 2);
var value =param[1].Trim('"');
var value = param[1].Trim('"');
result[param[0]] = NormalizeValue(value);
}
@ -293,42 +293,37 @@ namespace Emby.Server.Implementations.HttpServer.Security
public static string[] GetParts(string authtorizationHeader)
{
var result = new List<string>();
var escapeChars = new[] {'"', ','};
var escapeChars = new[] { '"', ',' };
var escaped = false;
var authtorizationHeaderChars = authtorizationHeader.ToCharArray();
var value = new List<char>();
for(var i = 0; i < authtorizationHeaderChars.Length; i++)
int start = 0;
int i = 0;
while (i < authtorizationHeader.Length)
{
if(!escapeChars.Contains(authtorizationHeaderChars[i]))
var token = authtorizationHeader[i];
if (escapeChars.Contains(token))
{
value = value.Append(authtorizationHeaderChars[i]).ToList();
}
else
{
// Applying a XOR logic to evaluate wether it is opening or closing a value
escaped = (!escaped) == (authtorizationHeaderChars[i] == '"');
if(authtorizationHeaderChars[i] == ',')
// Applying a XOR logic to evaluate whether it is opening or closing a value
escaped = (!escaped) == (token == '"');
if (token == ',' && !escaped)
{
if(escaped)
// Meeting a comma after a closing escape char means the value is complete
if (start < i)
{
value = value.Append(authtorizationHeaderChars[i]).ToList();
result.Add(authtorizationHeader[start..(i)]);
}
else
{
// Meeting a comma after a closing escape char means the value is complete
result.Add(new string(value.ToArray()));
value = new List<char>();
}
}
else
{
value = value.Append(authtorizationHeaderChars[i]).ToList();
start = i + 1;
}
}
i++;
}
// Add last value
result.Add(new string(value.ToArray()));
if (start < i)
{
result.Add(authtorizationHeader[start..(i)]);
}
return result.ToArray();
}