Functions/GenXdev.FileSystem/UnattendedModeHelper.cs
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// ################################################################################
// Part of PowerShell module : GenXdev.FileSystem // Original cmdlet filename : UnattendedModeHelper.cs // Original author : René Vaessen / GenXdev // Version : 1.280.2025 // ################################################################################ // MIT License // // Copyright 2021-2025 GenXdev // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in all // copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE // SOFTWARE. // ################################################################################ using System.Management.Automation; namespace GenXdev.FileSystem { /// <summary> /// Provides methods to detect if the process runs in unattended or automated /// mode. /// </summary> public static class UnattendedModeHelper { /// <summary> /// Detects if the current process is running in unattended/automated mode. /// </summary> /// <param name="callersInvocation">Optional: The caller's InvocationInfo /// for pipeline and automation detection.</param> /// <returns>True if running in unattended/automated mode, otherwise /// false.</returns> public static bool IsUnattendedMode(InvocationInfo callersInvocation = null) { // define environment variables indicating automation string[] automationEnvVars = new[] { "JENKINS_URL", "GITHUB_ACTIONS", "TF_BUILD", "CI", "BUILD_ID", "RUNNER_OS", "SYSTEM_TEAMPROJECT", "TEAMCITY_VERSION", "TRAVIS", "APPVEYOR", "CIRCLECI", "GITLAB_CI", "AZURE_PIPELINES" }; // check for any automation environment variable bool hasAutomationEnv = automationEnvVars.Any(envVar => !string.IsNullOrEmpty(System.Environment.GetEnvironmentVariable(envVar))); // return true if automation detected if (hasAutomationEnv) return true; // check console input/output redirection try { // detect redirected streams if (Console.IsInputRedirected || Console.IsOutputRedirected) return true; } catch { /* Ignore */ } // check for non-interactive environment try { // detect non-interactive mode if (!System.Environment.UserInteractive) return true; } catch { /* Ignore */ } // check for no console window try { // detect zero width as no window if (Console.WindowWidth == 0) return true; } catch { // assume no window on access failure return true; } // analyze pipeline if invocation provided if (callersInvocation != null) { // get pipeline position int pipelineInfo = callersInvocation.PipelinePosition; // get pipeline length int pipelineLength = callersInvocation.PipelineLength; // check if in pipeline bool isInPipeline = pipelineLength > 1; // check if not at pipeline end bool isNotPipelineEnd = pipelineInfo < pipelineLength; // check if from script file bool isFromScript = !string.IsNullOrEmpty(callersInvocation.ScriptName); // get command line text string commandLine = callersInvocation.Line ?? string.Empty; // detect automated command patterns bool isAutomatedCommand = System.Text.RegularExpressions.Regex.IsMatch(commandLine, @"^\s*(foreach|%|\||;|&)") || System.Text.RegularExpressions.Regex.IsMatch(commandLine, @"\$?[\S_]+\s*=\s*"); // return true if automated if (isAutomatedCommand) return true; // detect interactive function call bool isInteractiveFunction = pipelineLength == 1 && string.IsNullOrEmpty(callersInvocation.ScriptName); // return true if in pipeline and not interactive if (isInPipeline && !isInteractiveFunction) return true; // return true if not end and not interactive if (isNotPipelineEnd && !isInteractiveFunction) return true; // return true if automated and not interactive if (isAutomatedCommand && !isInteractiveFunction) return true; } // assume interactive if no indicators return false; } } } |