Use session keyring on Linux.

Author: peombwa

src/Authentication/Authentication/Constants.cs

@@ -13,8 +13,6 @@ public static class Constants
         internal const string UserParameterSet = "UserParameterSet";
         internal const string AppParameterSet = "AppParameterSet";
         internal const int MaxDeviceCodeTimeOut = 120; // 2 mins timeout.
-        internal const string UserCacheFileName = "userTokenCache.bin3";
-        internal const string AppCacheFileName = "appTokenCache.bin3";
         internal static readonly string TokenCacheDirectory = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".graph");
         internal const string TokenCahceServiceName = "com.microsoft.graph.powershell.sdkcache";
     }

src/Authentication/Authentication/Helpers/AuthenticationHelpers.cs

@@ -24,7 +24,7 @@ internal static IAuthenticationProvider GetAuthProvider(IAuthContext authConfig)
                    .WithTenantId(authConfig.TenantId)
                    .Build();
 
-                ConfigureTokenCache(publicClientApp.UserTokenCache, authConfig.ClientId, Constants.UserCacheFileName);
+                ConfigureTokenCache(publicClientApp.UserTokenCache, authConfig.ClientId);
                 return new DeviceCodeProvider(publicClientApp, authConfig.Scopes, async (result) => {
                     await Console.Out.WriteLineAsync(result.Message);
                 });
@@ -37,7 +37,7 @@ internal static IAuthenticationProvider GetAuthProvider(IAuthContext authConfig)
                 .WithCertificate(string.IsNullOrEmpty(authConfig.CertificateThumbprint) ? GetCertificateByName(authConfig.CertificateName) : GetCertificateByThumbprint(authConfig.CertificateThumbprint))
                 .Build();
 
-                ConfigureTokenCache(confidentialClientApp.AppTokenCache, authConfig.ClientId, Constants.AppCacheFileName);
+                ConfigureTokenCache(confidentialClientApp.AppTokenCache, authConfig.ClientId);
                 return new ClientCredentialProvider(confidentialClientApp);
             }
         }
@@ -50,7 +50,7 @@ internal static void Logout(IAuthContext authConfig)
             }
         }
 
-        private static void ConfigureTokenCache(ITokenCache tokenCache, string appId, string tokenCacheFile)
+        private static void ConfigureTokenCache(ITokenCache tokenCache, string appId)
         {
             tokenCache.SetBeforeAccess((TokenCacheNotificationArgs args) => {
                 lock (FileLock)

src/Authentication/Authentication/TokenCache/LinuxTokenCache.cs

@@ -24,15 +24,15 @@ public static byte[] GetToken(string appId)
                 type: LinuxNativeKeyUtils.KeyTypes.User,
                 description: $"{Constants.TokenCahceServiceName}:{appId}",
                 callout_info: IntPtr.Zero,
-                dest_keyring: (int)LinuxNativeKeyUtils.KeyringType.KEY_SPEC_USER_SESSION_KEYRING);
+                dest_keyring: (int)LinuxNativeKeyUtils.KeyringType.KEY_SPEC_SESSION_KEYRING);
 
             if (key == -1)
                 return new byte[0];
 
             LinuxNativeKeyUtils.keyctl_read_alloc(
                 key: key,
                 buffer: out IntPtr contentPtr);
-            string content = Marshal.PtrToStringAuto(contentPtr);
+            string content = Marshal.PtrToStringAnsi(contentPtr);
             Marshal.FreeHGlobal(contentPtr);
 
             if (string.IsNullOrEmpty(content))
@@ -55,15 +55,15 @@ public static void SetToken(string appId, byte[] plainContent)
                     type: LinuxNativeKeyUtils.KeyTypes.User,
                     description: $"{Constants.TokenCahceServiceName}:{appId}",
                     callout_info: IntPtr.Zero,
-                    dest_keyring: (int)LinuxNativeKeyUtils.KeyringType.KEY_SPEC_USER_SESSION_KEYRING);
+                    dest_keyring: (int)LinuxNativeKeyUtils.KeyringType.KEY_SPEC_SESSION_KEYRING);
 
                 if (key == -1)
                     LinuxNativeKeyUtils.add_key(
                         type: LinuxNativeKeyUtils.KeyTypes.User,
                         description: $"{Constants.TokenCahceServiceName}:{appId}",
                         payload: encodedContent,
                         plen: encodedContent.Length,
-                        keyring: (int)LinuxNativeKeyUtils.KeyringType.KEY_SPEC_USER_SESSION_KEYRING);
+                        keyring: (int)LinuxNativeKeyUtils.KeyringType.KEY_SPEC_SESSION_KEYRING);
                 else
                     LinuxNativeKeyUtils.keyctl_update(
                         key: key,
@@ -82,7 +82,7 @@ public static void DeleteToken(string appId)
                 type: LinuxNativeKeyUtils.KeyTypes.User,
                 description: $"{Constants.TokenCahceServiceName}:{appId}",
                 callout_info: IntPtr.Zero,
-                dest_keyring: (int)LinuxNativeKeyUtils.KeyringType.KEY_SPEC_USER_SESSION_KEYRING);
+                dest_keyring: (int)LinuxNativeKeyUtils.KeyringType.KEY_SPEC_SESSION_KEYRING);
             if (key != -1)
             {
                 int removedState = LinuxNativeKeyUtils.keyctl_revoke(key);