fix issues with subdomain routing in log UI (#358)

1 files changed, 20 insertions, 2 deletions

diff --git a/src/SMAPI.Web/Framework/RewriteSubdomainRule.cs b/src/SMAPI.Web/Framework/RewriteSubdomainRule.cs
index 5a56844f..cc183fe3 100644
--- a/src/SMAPI.Web/Framework/RewriteSubdomainRule.cs
+++ b/src/SMAPI.Web/Framework/RewriteSubdomainRule.cs
@@ -1,4 +1,7 @@
 using System;
+using System.Linq;
+using System.Text.RegularExpressions;
+using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Rewrite;
 
 namespace StardewModdingAPI.Web.Framework
@@ -7,14 +10,29 @@ namespace StardewModdingAPI.Web.Framework
     /// <remarks>Derived from <a href="https://stackoverflow.com/a/44526747/262123" />.</remarks>
     internal class RewriteSubdomainRule : IRule
     {
+        /*********
+        ** Accessors
+        *********/
+        /// <summary>The paths (excluding the hostname portion) to not rewrite.</summary>
+        public Regex[] ExceptPaths { get; set; }
+
+
+        /*********
+        ** Public methods
+        *********/
         /// <summary>Applies the rule. Implementations of ApplyRule should set the value for <see cref="RewriteContext.Result" /> (defaults to RuleResult.ContinueRules).</summary>
         /// <param name="context">The rewrite context.</param>
         public void ApplyRule(RewriteContext context)
         {
             context.Result = RuleResult.ContinueRules;
+            HttpRequest request = context.HttpContext.Request;
+
+            // check ignores
+            if (this.ExceptPaths?.Any(pattern => pattern.IsMatch(request.Path)) == true)
+                return;
 
             // get host parts
-            string host = context.HttpContext.Request.Host.Host;
+            string host = request.Host.Host;
             string[] parts = host.Split('.');
 
             // validate
@@ -24,7 +42,7 @@ namespace StardewModdingAPI.Web.Framework
                 return;
 
             // prepend to path
-            context.HttpContext.Request.Path = $"/{parts[0]}{context.HttpContext.Request.Path}";
+            request.Path = $"/{parts[0]}{request.Path}";
         }
     }
 }