Refactor security headers middleware to reintroduce essential security headers and improve code organization.

framework/src/Volo.Abp.AspNetCore.Authentication.OpenIdConnect/Volo/Abp/AspNetCore/Authentication/OpenIdConnect/AbpAspNetCoreAuthenticationOpenIdConnectModule.cs

@@ -1,5 +1,6 @@
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.AspNetCore.Authentication.OAuth;
+using Volo.Abp.AspNetCore.Security;
 using Volo.Abp.Modularity;
 using Volo.Abp.MultiTenancy;
 using Volo.Abp.RemoteServices;
@@ -16,5 +17,10 @@ public class AbpAspNetCoreAuthenticationOpenIdConnectModule : AbpModule
     public override void ConfigureServices(ServiceConfigurationContext context)
     {
         context.Services.AddHttpClient();
+
+        Configure<AbpSecurityHeadersOptions>(options =>
+        {
+            options.IgnoredScriptNoncePaths.Add("/signout-oidc");
+        });
     }
 }

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/Security/AbpSecurityHeadersMiddleware.cs

@@ -30,16 +30,6 @@ public class AbpSecurityHeadersMiddleware : AbpMiddlewareBase, ITransientDepende
             await next.Invoke(context);
             return;
         }
-
-        /*X-Content-Type-Options header tells the browser to not try and “guess” what a mimetype of a resource might be, and to just take what mimetype the server has returned as fact.*/
-        AddHeader(context, "X-Content-Type-Options", "nosniff");
-
-        /*X-XSS-Protection is a feature of Internet Explorer, Chrome and Safari that stops pages from loading when they detect reflected cross-site scripting (XSS) attacks*/
-        AddHeader(context, "X-XSS-Protection", "1; mode=block");
-
-        /*The X-Frame-Options HTTP response header can be used to indicate whether or not a browser should be allowed to render a page in a <frame>, <iframe> or <object>. SAMEORIGIN makes it being displayed in a frame on the same origin as the page itself. The spec leaves it up to browser vendors to decide whether this option applies to the top level, the parent, or the whole chain*/
-        AddHeader(context, "X-Frame-Options", "SAMEORIGIN");
-
         var requestAcceptTypeHtml = context.Request.Headers["Accept"].Any(x =>
             x!.Contains("text/html") || x.Contains("*/*") || x.Contains("application/xhtml+xml"));
 
@@ -54,13 +44,21 @@ public class AbpSecurityHeadersMiddleware : AbpMiddlewareBase, ITransientDepende
             return;
         }
 
+        /*X-Content-Type-Options header tells the browser to not try and “guess” what a mimetype of a resource might be, and to just take what mimetype the server has returned as fact.*/
+        AddHeader(context, "X-Content-Type-Options", "nosniff");
+
+        /*X-XSS-Protection is a feature of Internet Explorer, Chrome and Safari that stops pages from loading when they detect reflected cross-site scripting (XSS) attacks*/
+        AddHeader(context, "X-XSS-Protection", "1; mode=block");
+
+        /*The X-Frame-Options HTTP response header can be used to indicate whether or not a browser should be allowed to render a page in a <frame>, <iframe> or <object>. SAMEORIGIN makes it being displayed in a frame on the same origin as the page itself. The spec leaves it up to browser vendors to decide whether this option applies to the top level, the parent, or the whole chain*/
+        AddHeader(context, "X-Frame-Options", "SAMEORIGIN");
+
         if (Options.Value.UseContentSecurityPolicyScriptNonce)
         {
             var randomValue = Guid.NewGuid().ToString("N");
             context.Items.Add(AbpAspNetCoreConsts.ScriptNonceKey, randomValue);
         }
 
-
         context.Response.OnStarting(() =>
         {
             if (context.Response.Headers.ContainsKey("Content-Security-Policy"))