Check if the user has access to a depot before attempting to download it.

DepotDownloader/CDRManager.cs

@@ -12,6 +12,9 @@ namespace DepotDownloader
     {
         [BlobField( FieldKey = CDRFields.eFieldApplicationsRecord, Depth = 1, Complex = true )]
         public List<App> Apps { get; set; }
+
+        [BlobField( FieldKey = CDRFields.eFieldSubscriptionsRecord, Depth = 1, Complex = true )]
+        public List<Sub> Subs { get; set; }
     }
 
     class App
@@ -35,6 +38,15 @@ namespace DepotDownloader
         public Dictionary<string, string> UserDefined { get; private set; }
     }
 
+    class Sub
+    {
+        [BlobField( FieldKey = CDRSubRecordFields.eFieldSubId, Depth = 1 )]
+        public int SubID { get; set; }
+
+        [BlobField( FieldKey = CDRSubRecordFields.eFieldAppIdsRecord, Depth = 1 )]
+        public List<int> AppIDs { get; private set; }
+    }
+
     class AppVersion
     {
         [BlobField( FieldKey = CDRAppVersionFields.eFieldVersionId )]
@@ -121,6 +133,11 @@ namespace DepotDownloader
             return cdrObj.Apps.Find( ( app ) => app.AppID == appID );
         }
 
+        static Sub GetSubBlob( int subID )
+        {
+            return cdrObj.Subs.Find( ( sub ) => sub.SubID == subID );
+        }
+
         public static string GetDepotName( int depotId )
         {
             // Match hardcoded names from hldsupdatetool for certain HL1 depots
@@ -352,6 +369,16 @@ namespace DepotDownloader
                 Console.WriteLine( "\t\"{0}\"", game );
         }
 
+        public static bool SubHasDepot( int subId, int depotId )
+        {
+            Sub sub = GetSubBlob( subId );
+
+            if ( sub == null )
+                return false;
+
+            return sub.AppIDs.Contains( depotId );
+        }
+
         static byte[] GetCdr()
         {
             try

DepotDownloader/ContentDownloader.cs

@@ -108,6 +108,20 @@ namespace DepotDownloader
             return false;
         }
 
+        static bool AccountHasAccess( int depotId )
+        {
+            if ( steam3 == null || steam3.Licenses == null )
+                return CDRManager.SubHasDepot( 0, depotId );
+
+            foreach ( var license in steam3.Licenses )
+            {
+                if ( CDRManager.SubHasDepot( ( int )license.PackageID, depotId ) )
+                    return true;
+            }
+
+            return false;
+        }
+
         public static void Download( int depotId, int depotVersion, int cellId, string username, string password, bool onlyManifest, bool gameServer, bool exclude, string installDir, string[] fileList )
         {
             if ( !CreateDirectories( depotId, depotVersion, ref installDir ) )
@@ -135,6 +149,17 @@ namespace DepotDownloader
                 credentials = GetCredentials( ( uint )depotId, username, password );
             }
 
+            if ( !AccountHasAccess( depotId ) )
+            {
+                string contentName = CDRManager.GetDepotName( depotId );
+                Console.WriteLine( "Depot {0} ({1}) is not available from this account.", depotId, contentName );
+
+                if ( steam3 != null )
+                    steam3.Disconnect();
+
+                return;
+            }
+
             string manifestFile = Path.Combine( installDir, "manifest.bin" );
             string txtManifest = Path.Combine( installDir, "manifest.txt" );
 

DepotDownloader/Steam3Session.cs

@@ -4,6 +4,7 @@ using System.Linq;
 using System.Text;
 using SteamKit2;
 using System.Threading;
+using System.Collections.ObjectModel;
 
 namespace DepotDownloader
 {
@@ -18,6 +19,12 @@ namespace DepotDownloader
             public byte[] AppTicket { get; set; }
         }
 
+        public ReadOnlyCollection<SteamApps.LicenseListCallback.License> Licenses
+        {
+            get;
+            private set;
+        }
+
         SteamClient steamClient;
 
         SteamUser steamUser;
@@ -90,7 +97,7 @@ namespace DepotDownloader
                 if ( diff > STEAM3_TIMEOUT && !bConnected )
                     break;
 
-                if ( credentials.HasSessionToken && credentials.AppTicket != null )
+                if ( credentials.HasSessionToken && credentials.AppTicket != null && Licenses != null )
                     break;
 
                 if ( callback == null )
@@ -162,6 +169,21 @@ namespace DepotDownloader
                     credentials.SessionToken = msg.SessionToken;
                     credentials.HasSessionToken = true;
                 }
+
+                if ( callback.IsType<SteamApps.LicenseListCallback>() )
+                {
+                    var msg = callback as SteamApps.LicenseListCallback;
+
+                    if ( msg.Result != EResult.OK )
+                    {
+                        Console.WriteLine( "Unable to get license list: {0} ", msg.Result );
+                        steamUser.LogOff();
+                        break;
+                    }
+
+                    Console.WriteLine( "Got {0} licenses for account!", msg.LicenseList.Count );
+                    Licenses = msg.LicenseList;
+                }
             }
 
             credentialHandle.Set();