v1.3.0.1 (Epic Store release)

2024-03-28 18:34:33 +02:00
parent 81ca8637be
commit 3791670c42
269 changed files with 13160 additions and 2966 deletions
@@ -0,0 +1,74 @@
+using System;
+using System.Collections.Immutable;
+using System.Linq;
+using System.Text;
+
+namespace Barotrauma;
+
+public static class UnixTime
+{
+    public static readonly DateTime UtcEpoch = new DateTime(year: 1970, month: 1, day: 1, hour: 0, minute: 0, second: 0, kind: DateTimeKind.Utc);
+
+    public static Option<DateTime> ParseUtc(string str)
+    {
+        if (!ulong.TryParse(str, out var seconds)) { return Option.None; }
+        return Option.Some(UtcEpoch + TimeSpan.FromSeconds(seconds));
+    }
+}
+
+/// <summary>
+/// URL-safe Base64. See https://datatracker.ietf.org/doc/html/rfc4648#section-5
+/// </summary>
+public static class Base64Url
+{
+    public static bool IsBase64Url(this string str)
+        => str.All(c
+            => c is
+                (>= 'A' and <= 'Z')
+                or (>= 'a' and <= 'z')
+                or (>= '0' and <= '9')
+                or '-' or '_');
+
+    public static Option<string> DecodeUtf8String(string encodedForm)
+    {
+        return DecodeBytes(encodedForm).Select(bytes => Encoding.UTF8.GetString(bytes.AsSpan()));
+    }
+
+    public static Option<ImmutableArray<byte>> DecodeBytes(string encodedForm)
+    {
+        if (!encodedForm.IsBase64Url()) { return Option.None; }
+        string base64Form = encodedForm.Replace("-", "+").Replace("_", "/");
+        base64Form += new string('=', (4 - (base64Form.Length % 4)) % 4);
+        return Option.Some(Convert.FromBase64String(base64Form).ToImmutableArray());
+    }
+}
+
+/// <summary>
+/// Rudimentary JSON Web Token implementation. See https://en.wikipedia.org/wiki/JSON_Web_Token.
+/// This is used by continuance tokens and ID tokens as part of their internal representation.
+/// We can use the data encoded in them for some things, such as determining a token's expiry time.
+/// </summary>
+public readonly record struct JsonWebToken(
+    string Header,
+    string Payload,
+    string Signature)
+{
+    public bool IsValid => Header.IsBase64Url() && Payload.IsBase64Url() && Signature.IsBase64Url();
+
+    public override string ToString()
+        => $"{Header}.{Payload}.{Signature}";
+
+    public string HeaderDecoded => Base64Url.DecodeUtf8String(Header).Fallback("");
+    public string PayloadDecoded => Base64Url.DecodeUtf8String(Payload).Fallback("");
+
+    public static Option<JsonWebToken> Parse(string str)
+    {
+        if (str.Split(".") is not { Length: 3 } split) { return Option.None; }
+        var newToken = new JsonWebToken(
+            Header: split[0],
+            Payload: split[1],
+            Signature: split[2]);
+        if (!newToken.IsValid) { return Option.None; }
+        return Option.Some(newToken);
+    }
+}