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

src/SMAPI.Web/Controllers/LogParserController.cs

@@ -4,6 +4,7 @@ using Microsoft.Extensions.Options;
 using StardewModdingAPI.Web.Framework;
 using StardewModdingAPI.Web.Framework.ConfigModels;
 using StardewModdingAPI.Web.Framework.LogParser;
+using StardewModdingAPI.Web.ViewModels;
 
 namespace StardewModdingAPI.Web.Controllers
 {
@@ -13,6 +14,9 @@ namespace StardewModdingAPI.Web.Controllers
         /*********
         ** Properties
         *********/
+        /// <summary>The log parser config settings.</summary>
+        private readonly LogParserConfig Config;
+
         /// <summary>The underlying Pastebin client.</summary>
         private readonly PastebinClient PastebinClient;
 
@@ -28,10 +32,10 @@ namespace StardewModdingAPI.Web.Controllers
         public LogParserController(IOptions<LogParserConfig> configProvider)
         {
             // init Pastebin client
-            LogParserConfig config = configProvider.Value;
+            this.Config = configProvider.Value;
             string version = this.GetType().Assembly.GetName().Version.ToString(3);
-            string userAgent = string.Format(config.PastebinUserAgent, version);
-            this.PastebinClient = new PastebinClient(config.PastebinBaseUrl, userAgent, config.PastebinDevKey);
+            string userAgent = string.Format(this.Config.PastebinUserAgent, version);
+            this.PastebinClient = new PastebinClient(this.Config.PastebinBaseUrl, userAgent, this.Config.PastebinDevKey);
         }
 
         /***
@@ -42,7 +46,7 @@ namespace StardewModdingAPI.Web.Controllers
         [Route("log")]
         public ViewResult Index()
         {
-            return this.View("Index");
+            return this.View("Index", new LogParserModel(this.Config.SectionUrl));
         }
 
         /***

src/SMAPI.Web/Framework/ConfigModels/LogParserConfig.cs

@@ -6,6 +6,9 @@ namespace StardewModdingAPI.Web.Framework.ConfigModels
         /*********
         ** Accessors
         *********/
+        /// <summary>The root URL for the log parser controller.</summary>
+        public string SectionUrl { get; set; }
+
         /// <summary>The base URL for the Pastebin API.</summary>
         public string PastebinBaseUrl { get; set; }
 

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}";
         }
     }
 }

src/SMAPI.Web/Startup.cs

@@ -1,3 +1,4 @@
+using System.Text.RegularExpressions;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Rewrite;
@@ -64,7 +65,13 @@ namespace StardewModdingAPI.Web
             loggerFactory.AddConsole(this.Configuration.GetSection("Logging"));
             loggerFactory.AddDebug();
             app
-                .UseRewriter(new RewriteOptions().Add(new RewriteSubdomainRule())) // convert subdomain.smapi.io => smapi.io/subdomain for routing
+                .UseRewriter(
+                    new RewriteOptions()
+                    .Add(new RewriteSubdomainRule
+                    {
+                        ExceptPaths = new[] { new Regex("^/Content", RegexOptions.Compiled | RegexOptions.CultureInvariant | RegexOptions.IgnoreCase) }
+                    })
+                ) // convert subdomain.smapi.io => smapi.io/subdomain for routing
                 .UseStaticFiles() // wwwroot folder
                 .UseMvc();
         }

src/SMAPI.Web/ViewModels/LogParserModel.cs

@@ -0,0 +1,26 @@
+namespace StardewModdingAPI.Web.ViewModels
+{
+    /// <summary>The view model for the log parser page.</summary>
+    public class LogParserModel
+    {
+        /*********
+        ** Accessors
+        *********/
+        /// <summary>The root URL for the log parser controller.</summary>
+        public string SectionUrl { get; set; }
+
+
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Construct an instance.</summary>
+        public LogParserModel() { }
+
+        /// <summary>Construct an instance.</summary>
+        /// <param name="sectionUrl">The root URL for the log parser controller.</param>
+        public LogParserModel(string sectionUrl)
+        {
+            this.SectionUrl = sectionUrl;
+        }
+    }
+}

src/SMAPI.Web/Views/LogParser/Index.cshtml

@@ -1,12 +1,18 @@
 @{
     ViewData["Title"] = "SMAPI log parser";
 }
+@model StardewModdingAPI.Web.ViewModels.LogParserModel
 @section Head {
     <link rel="stylesheet" href="~/Content/css/log-parser.css" />
     <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js" crossorigin="anonymous"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/lz-string/1.4.4/lz-string.min.js" crossorigin="anonymous"></script>
     <script src="~/Content/js/log-parser.js"></script>
     <style type="text/css" id="modflags"></style>
+    <script>
+        $(function() {
+            smapi.logParser('@Model.SectionUrl');
+        });
+    </script>
 }
 
 @*********

src/SMAPI.Web/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "IncludeScopes": false,
     "LogLevel": {
@@ -6,5 +6,8 @@
       "System": "Information",
       "Microsoft": "Information"
     }
+  },
+  "LogParser": {
+    "SectionUrl": "http://localhost:59482/log/"
   }
 }

src/SMAPI.Web/appsettings.json

@@ -28,6 +28,7 @@
     "NexusModUrlFormat": "mods/{0}"
   },
   "LogParser": {
+    "SectionUrl": "https://log.smapi.io/",
     "PastebinBaseUrl": "https://pastebin.com/",
     "PastebinUserAgent": "SMAPI/{0} (+https://github.com/Pathoschild/SMAPI)",
     "PastebinDevKey": "b8219d942109d1e60ebb14fbb45f06f9"

src/SMAPI.Web/wwwroot/Content/js/log-parser.js

@@ -1,6 +1,7 @@
 /* globals $, LZString */
 
-$(function() {
+var smapi = smapi || {};
+smapi.logParser = function(sectionUrl) {
     /*********
     ** Initialisation
     *********/
@@ -75,7 +76,7 @@ $(function() {
             $
                 .ajax({
                     type: "POST",
-                    url: "/log/save",
+                    url: sectionUrl + "/save",
                     data: JSON.stringify(paste),
                     contentType: "application/json" // sent to API
                 })
@@ -273,7 +274,7 @@ $(function() {
     function getData() {
         $("#uploader").attr("data-text", "Loading...");
         $("#uploader").fadeIn();
-        $.get("/log/fetch/" + location.search.substring(1), function(data) {
+        $.get(sectionUrl + "/fetch/" + location.search.substring(1), function(data) {
             if (data.success) {
                 $("#input").val(LZString.decompressFromUTF16(data.content) || data.content);
                 loadData();
@@ -284,4 +285,4 @@ $(function() {
             $("#uploader").fadeOut();
         });
     }
-});
+};