我正在尝试使用ClickOnce应用程序在Azure DevOps中进行CI / CD。使用托管代理时,如何在构建过程中安全地提供代码签名证书?
注意我知道您可以按照Visual Studio团队服务deploymen / buildt证书错误的建议使用脚本。但是,这种方法并不安全。该证书将被加载到托管代理运行所在帐户的证书存储中。这将允许代理以及其他Azure DevOps帐户潜在地访问和使用证书。
该问题的解决方案是覆盖内置任务 SignFile。有趣的是,任务 SignFile 使用一个内置函数,其中Microsoft.Build.Tasks.Deployment.ManifestUtilities.SecurityUtilities.SignFile有两个重载,一个需要指纹,另一个需要文件和密码。
然后,解决方案是创建一个可以引用其他重载的新任务。由于我们无法更改调用 SignFile,因此我们需要维护相同的签名,并将适当的变量放置在环境变量中。在本例中为“CertificateFile”和“CertificatePassword”。
然后在覆盖的 SignFile 中引用这两个。我所做的是创建一个新的目标文件(filesign.targets)并将代码放在那里。将其签入我的存储库并从主项目文件中引用它。
<Import Project="filesign.targets" />
这样,我们还可以将密钥文件保存在 Azure Key Vault 中,在构建时加载它们,并为它们提供专门用于该构建的唯一密码。
目标文件包含新的 FileSign 任务:
<?xml version="1.0" encoding="Windows-1252"?>
<!--
***********************************************************************************************
Microsoft.VisualStudio.Tools.Office.targets
WARNING: DO NOT MODIFY this file unless you are knowledgeable about MSBuild and have
created a backup copy. Incorrect changes to this file will make it
impossible to load or build your projects from the command-line or the IDE.
This file defines the steps in the standard build process specific for Visual Studio Tools for
Office projects.
Copyright (C) Microsoft Corporation. All rights reserved.
***********************************************************************************************
-->
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<UsingTask TaskName="SignFile" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.Core.dll">
<ParameterGroup>
<SigningTarget Required="true" ParameterType="Microsoft.Build.Framework.ITaskItem" />
<CertificateThumbprint ParameterType="System.String" />
<TargetFrameworkVersion ParameterType="System.String" />
<TimestampUrl ParameterType="System.String" />
<CertificateFile ParameterType="System.String" />
<CertificatePassword ParameterType="System.String" />
</ParameterGroup>
<Task>
<Reference Include="mscorlib" />
<Reference Include="Microsoft.Build.Tasks.Core" />
<Using Namespace="System" />
<Code Type="Fragment" Language="cs">
<![CDATA[
var EnvCertFile = System.Environment.GetEnvironmentVariable("CertificateFile");
Log.LogMessage("CertFile:!!" + EnvCertFile);
if (string.IsNullOrWhiteSpace(CertificateFile) && string.IsNullOrWhiteSpace(EnvCertFile)) {
var signFile = new Microsoft.Build.Tasks.SignFile();
signFile.CertificateThumbprint = CertificateThumbprint;
signFile.SigningTarget = SigningTarget;
signFile.TargetFrameworkVersion = TargetFrameworkVersion;
signFile.TimestampUrl = TimestampUrl;
return signFile.Execute();
} else {
var certificate = string.IsNullOrWhiteSpace(CertificateFile) ? EnvCertFile : CertificateFile;
var EnvCertPassword = System.Environment.GetEnvironmentVariable("CertificatePassword");
var certificatePassword = string.IsNullOrWhiteSpace(CertificatePassword) ? EnvCertPassword : CertificatePassword;
var testString = new System.Security.SecureString();
// Use the AppendChar method to add each char value to the secure string.
if (!string.IsNullOrWhiteSpace(certificatePassword))
foreach (char ch in certificatePassword)
testString.AppendChar(ch);
Microsoft.Build.Tasks.Deployment.ManifestUtilities.SecurityUtilities.SignFile(certificate, testString,
TimestampUrl == null ? null : new Uri(TimestampUrl),
SigningTarget.ItemSpec);
return true;
}
]]>
</Code>
</Task>
</UsingTask>
</Project>
Run Code Online (Sandbox Code Playgroud)
代码基于: https: //gist.github.com/KirillOsenkov/4cd32c40bffd3045f77e
参考文献: https://github.com/Microsoft/msbuild/blob/fc10ea8ce260b764bb9fa5033b327af9fefcaabe/src/Tasks/ManifestUtil/SecurityUtil.cs https://github.com/Microsoft/msbuild/blob/master/src/Tasks/SignFile.cs
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