1 files changed, 75 insertions, 0 deletions
diff --git a/Jellyfin.Api/Helpers/ClaimHelpers.cs b/Jellyfin.Api/Helpers/ClaimHelpers.cs
new file mode 100644
index 000000000..df235ced2
--- /dev/null
+++ b/Jellyfin.Api/Helpers/ClaimHelpers.cs
@@ -0,0 +1,75 @@
+using System;
+using System.Linq;
+using System.Security.Claims;
+using Jellyfin.Api.Constants;
+
+namespace Jellyfin.Api.Helpers
+{
+    /// <summary>
+    /// Claim Helpers.
+    /// </summary>
+    public static class ClaimHelpers
+    {
+        /// <summary>
+        /// Get user id from claims.
+        /// </summary>
+        /// <param name="user">Current claims principal.</param>
+        /// <returns>User id.</returns>
+        public static Guid? GetUserId(in ClaimsPrincipal user)
+        {
+            var value = GetClaimValue(user, InternalClaimTypes.UserId);
+            return string.IsNullOrEmpty(value)
+                ? null
+                : (Guid?)Guid.Parse(value);
+        }
+
+        /// <summary>
+        /// Get device id from claims.
+        /// </summary>
+        /// <param name="user">Current claims principal.</param>
+        /// <returns>Device id.</returns>
+        public static string? GetDeviceId(in ClaimsPrincipal user)
+            => GetClaimValue(user, InternalClaimTypes.DeviceId);
+
+        /// <summary>
+        /// Get device from claims.
+        /// </summary>
+        /// <param name="user">Current claims principal.</param>
+        /// <returns>Device.</returns>
+        public static string? GetDevice(in ClaimsPrincipal user)
+            => GetClaimValue(user, InternalClaimTypes.Device);
+
+        /// <summary>
+        /// Get client from claims.
+        /// </summary>
+        /// <param name="user">Current claims principal.</param>
+        /// <returns>Client.</returns>
+        public static string? GetClient(in ClaimsPrincipal user)
+            => GetClaimValue(user, InternalClaimTypes.Client);
+
+        /// <summary>
+        /// Get version from claims.
+        /// </summary>
+        /// <param name="user">Current claims principal.</param>
+        /// <returns>Version.</returns>
+        public static string? GetVersion(in ClaimsPrincipal user)
+            => GetClaimValue(user, InternalClaimTypes.Version);
+
+        /// <summary>
+        /// Get token from claims.
+        /// </summary>
+        /// <param name="user">Current claims principal.</param>
+        /// <returns>Token.</returns>
+        public static string? GetToken(in ClaimsPrincipal user)
+            => GetClaimValue(user, InternalClaimTypes.Token);
+
+        private static string? GetClaimValue(in ClaimsPrincipal user, string name)
+        {
+            return user?.Identities
+                .SelectMany(c => c.Claims)
+                .Where(claim => claim.Type.Equals(name, StringComparison.OrdinalIgnoreCase))
+                .Select(claim => claim.Value)
+                .FirstOrDefault();
+        }
+    }
+}