Add project files.

3 files changed, 110 insertions, 0 deletions

diff --git a/VNLib.Plugins.Essentials.Accounts.Registration/src/TokenRevocation/RevocationContext.cs b/VNLib.Plugins.Essentials.Accounts.Registration/src/TokenRevocation/RevocationContext.cs
new file mode 100644
index 0000000..71921c2
--- /dev/null
+++ b/VNLib.Plugins.Essentials.Accounts.Registration/src/TokenRevocation/RevocationContext.cs
@@ -0,0 +1,14 @@
+using Microsoft.EntityFrameworkCore;
+
+using VNLib.Plugins.Extensions.Data;
+
+namespace VNLib.Plugins.Essentials.Accounts.Registration.TokenRevocation
+{
+    internal class RevocationContext : TransactionalDbContext
+    {
+        public DbSet<RevokedToken> RevokedRegistrationTokens { get; set; }
+        
+        public RevocationContext(DbContextOptions options) : base(options)
+        {}
+    }
+}
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diff --git a/VNLib.Plugins.Essentials.Accounts.Registration/src/TokenRevocation/RevokedToken.cs b/VNLib.Plugins.Essentials.Accounts.Registration/src/TokenRevocation/RevokedToken.cs
new file mode 100644
index 0000000..ac0fc9a
--- /dev/null
+++ b/VNLib.Plugins.Essentials.Accounts.Registration/src/TokenRevocation/RevokedToken.cs
@@ -0,0 +1,19 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+
+namespace VNLib.Plugins.Essentials.Accounts.Registration.TokenRevocation
+{
+
+    internal class RevokedToken
+    {
+        /// <summary>
+        /// The time the token was revoked.
+        /// </summary>
+        public DateTime Created { get; set; }
+        /// <summary>
+        /// The token that was revoked.
+        /// </summary>
+        [Key]
+        public string? Token { get; set; }
+    }
+}
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diff --git a/VNLib.Plugins.Essentials.Accounts.Registration/src/TokenRevocation/RevokedTokenStore.cs b/VNLib.Plugins.Essentials.Accounts.Registration/src/TokenRevocation/RevokedTokenStore.cs
new file mode 100644
index 0000000..ccc7b37
--- /dev/null
+++ b/VNLib.Plugins.Essentials.Accounts.Registration/src/TokenRevocation/RevokedTokenStore.cs
@@ -0,0 +1,77 @@
+using System.Collections;
+
+using Microsoft.EntityFrameworkCore;
+
+using VNLib.Utils;
+
+namespace VNLib.Plugins.Essentials.Accounts.Registration.TokenRevocation
+{
+    internal class RevokedTokenStore
+    {
+        private readonly DbContextOptions Options;
+
+        public RevokedTokenStore(DbContextOptions options)
+        {
+            Options = options;
+        }
+
+        public async Task<bool> IsRevokedAsync(string token, CancellationToken cancellation)
+        {
+            await using RevocationContext context = new (Options);
+            await context.OpenTransactionAsync(cancellation);
+
+            //Select any that match tokens
+            bool any = await (from t in context.RevokedRegistrationTokens
+                              where t.Token == token
+                              select t).AnyAsync(cancellation);
+
+            await context.CommitTransactionAsync(cancellation);
+            return any;
+        }
+
+        public async Task RevokeAsync(string token, CancellationToken cancellation)
+        {
+            await using RevocationContext context = new (Options);
+            await context.OpenTransactionAsync(cancellation);
+
+            //Add to table
+            context.RevokedRegistrationTokens.Add(new RevokedToken()
+            {
+                Created = DateTime.UtcNow,
+                Token = token
+            });
+
+            //Save changes and commit transaction
+            await context.SaveChangesAsync(cancellation);
+            await context.CommitTransactionAsync(cancellation);
+        }
+
+        /// <summary>
+        /// Removes expired records from the store
+        /// </summary>
+        /// <param name="validFor">The time a token is valid for</param>
+        /// <param name="cancellation">A token that cancels the async operation</param>
+        /// <returns>The number of records evicted from the store</returns>
+        public async Task<ERRNO> CleanTableAsync(TimeSpan validFor, CancellationToken cancellation)
+        {
+            DateTime expiredBefore = DateTime.UtcNow.Subtract(validFor);
+
+            await using RevocationContext context = new (Options);
+            await context.OpenTransactionAsync(cancellation);
+
+            //Select any that match tokens
+            RevokedToken[] expired = await context.RevokedRegistrationTokens.Where(t => t.Created < expiredBefore)
+                .Select(static t => t)
+                .ToArrayAsync(cancellation);
+
+
+            context.RevokedRegistrationTokens.RemoveRange(expired);
+
+            ERRNO count =await context.SaveChangesAsync(cancellation);
+            
+            await context.CommitTransactionAsync(cancellation);
+
+            return count;
+        }
+    }
+}
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