aspnetcore/src/Microsoft.AspNetCore.Server.../WebConfigTransform.cs

87 lines
3.9 KiB
C#

// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using System.IO;
using System.Linq;
using System.Xml.Linq;
namespace Microsoft.AspNetCore.Server.IISIntegration.Tools
{
public static class WebConfigTransform
{
public static XDocument Transform(XDocument webConfig, string appName, bool configureForAzure)
{
const string HandlersElementName = "handlers";
const string aspNetCoreElementName = "aspNetCore";
webConfig = webConfig == null || webConfig.Root.Name.LocalName != "configuration"
? XDocument.Parse("<configuration />")
: webConfig;
var webServerSection = GetOrCreateChild(webConfig.Root, "system.webServer");
TransformHandlers(GetOrCreateChild(webServerSection, HandlersElementName));
TransformAspNetCore(GetOrCreateChild(webServerSection, aspNetCoreElementName), appName, configureForAzure);
// make sure that the aspNetCore element is after handlers element
var aspNetCoreElement = webServerSection.Element(HandlersElementName)
.ElementsBeforeSelf(aspNetCoreElementName).SingleOrDefault();
if (aspNetCoreElement != null)
{
aspNetCoreElement.Remove();
webServerSection.Element(HandlersElementName).AddAfterSelf(aspNetCoreElement);
}
return webConfig;
}
private static void TransformHandlers(XElement handlersElement)
{
var aspNetCoreElement =
handlersElement.Elements("add")
.FirstOrDefault(e => string.Equals((string)e.Attribute("name"), "aspnetcore", StringComparison.OrdinalIgnoreCase));
if (aspNetCoreElement == null)
{
aspNetCoreElement = new XElement("add");
handlersElement.Add(aspNetCoreElement);
}
aspNetCoreElement.SetAttributeValue("name", "aspNetCore");
SetAttributeValueIfEmpty(aspNetCoreElement, "path", "*");
SetAttributeValueIfEmpty(aspNetCoreElement, "verb", "*");
SetAttributeValueIfEmpty(aspNetCoreElement, "modules", "AspNetCoreModule");
SetAttributeValueIfEmpty(aspNetCoreElement, "resourceType", "Unspecified");
}
private static void TransformAspNetCore(XElement aspNetCoreElement, string appName, bool configureForAzure)
{
// Forward slashes currently work neither in AspNetCoreModule nor in dotnet so they need to be
// replaced with backwards slashes when the application is published on a non-Windows machine
var appPath = Path.Combine(configureForAzure ? @"%home%\site" : ".", appName).Replace("/", "\\");
var logPath = Path.Combine(configureForAzure ? @"\\?\%home%\LogFiles" : @".\logs", "stdout").Replace("/", "\\");
aspNetCoreElement.SetAttributeValue("processPath", appPath);
SetAttributeValueIfEmpty(aspNetCoreElement, "stdoutLogEnabled", "false");
SetAttributeValueIfEmpty(aspNetCoreElement, "stdoutLogFile", logPath);
SetAttributeValueIfEmpty(aspNetCoreElement, "startupTimeLimit", "3600");
}
private static XElement GetOrCreateChild(XElement parent, string childName)
{
var childElement = parent.Element(childName);
if (childElement == null)
{
childElement = new XElement(childName);
parent.Add(childElement);
}
return childElement;
}
private static void SetAttributeValueIfEmpty(XElement element, string attributeName, string value)
{
element.SetAttributeValue(attributeName, (string)element.Attribute(attributeName) ?? value);
}
}
}