AzSKPreview.ADO

1.8.0

Framework/Core/SVT/ADO/ADO.Release.ps1

Set-StrictMode -Version Latest
class Release: ADOSVTBase
{

    hidden [PSObject] $ReleaseObj;
    hidden [string] $ProjectId;
    hidden static [PSObject] $ReleaseNamespacesObj= $null;
    hidden static [PSObject] $ReleaseNamespacesPermissionObj= $null;
    hidden static [PSObject] $TaskGroupNamespacesObj= $null;
    hidden static [PSObject] $TaskGroupNamespacePermissionObj= $null;
    hidden static $IsOAuthScan = $false;
    hidden static [string] $securityNamespaceId = $null;
    hidden static [PSObject] $ReleaseVarNames = @{};
    hidden [PSObject] $releaseActivityDetail = @{isReleaseActive = $true; latestReleaseTriggerDate = $null; releaseCreationDate = $null; message = $null; isComputed = $false; errorObject = $null};
    hidden [PSObject] $excessivePermissionBits = @(1)

    Release([string] $organizationName, [SVTResource] $svtResource): Base($organizationName,$svtResource)
    {
        [system.gc]::Collect();

        if(-not [string]::IsNullOrWhiteSpace($env:RefreshToken) -and -not [string]::IsNullOrWhiteSpace($env:ClientSecret))  # this if block will be executed for OAuth based scan
        {
            [Release]::IsOAuthScan = $true
        }

        $TaskGroupSecurityNamespace = $null
        # Get release object
        $releaseId =  ($this.ResourceContext.ResourceId -split "release/")[-1]
        $this.ProjectId = ($this.ResourceContext.ResourceId -split "project/")[-1].Split('/')[0]
        $apiURL = "https://vsrm.dev.azure.com/$($this.OrganizationContext.OrganizationName)/$($this.ProjectId)/_apis/Release/definitions/$($releaseId)?api-version=6.0"
        $this.ReleaseObj = [WebRequestHelper]::InvokeGetWebRequest($apiURL);
        # Get security namespace identifier of current release pipeline.
        if ([string]::IsNullOrEmpty([Release]::SecurityNamespaceId)) {
            $apiURL = "https://dev.azure.com/{0}/_apis/securitynamespaces?api-version=6.0" -f $($this.OrganizationContext.OrganizationName)
            $securityNamespacesObj = [WebRequestHelper]::InvokeGetWebRequest($apiURL);
            [Release]::SecurityNamespaceId = ($securityNamespacesObj | Where-Object { ($_.Name -eq "ReleaseManagement") -and ($_.actions.name -contains "ViewReleaseDefinition")}).namespaceId
            if ([Release]::IsOAuthScan -eq $true)
            {
                $TaskGroupSecurityNamespace = ($securityNamespacesObj | Where-Object { ($_.Name -eq "MetaTask")}).namespaceId
            }

            $securityNamespacesObj = $null;
        }

        # if release activity check function is not computed, then first compute the function to get the correct status of release.
        if($this.releaseActivityDetail.isComputed -eq $false)
        {
            $this.CheckActiveReleases()
        }

        # overiding the '$this.isResourceActive' global variable based on the current status of release.
        if ($this.releaseActivityDetail.isReleaseActive)
        {
            $this.isResourceActive = $true
        }
        else
        {
            $this.isResourceActive = $false
        }

        # calculating the inactivity period in days for the release. If there is no release history, then setting it with negative value.
        # This will ensure inactive period is always computed irrespective of whether inactive control is scanned or not.
        if ($null -ne $this.releaseActivityDetail.latestReleaseTriggerDate)
        {
            $this.InactiveFromDays = ((Get-Date) - $this.releaseActivityDetail.latestReleaseTriggerDate).Days
        }

        if ([Release]::IsOAuthScan -eq $true)
        {
            #Get ACL for all releases
            if ((-not [string]::IsNullOrEmpty([Release]::SecurityNamespaceId)) -and ($null -eq [Release]::ReleaseNamespacesObj)) {
                $apiURL = "https://dev.azure.com/{0}/_apis/accesscontrollists/{1}?includeExtendedInfo=True&recurse=True&api-version=6.0" -f $($this.OrganizationContext.OrganizationName),$([Release]::SecurityNamespaceId)
                [Release]::ReleaseNamespacesObj = [WebRequestHelper]::InvokeGetWebRequest($apiURL);
            }

            #Get release permission and their bit using security namespace
            if ((-not [string]::IsNullOrEmpty([Release]::SecurityNamespaceId)) -and ($null -eq [Release]::ReleaseNamespacesPermissionObj)) {
                #Get permission and its bit for security namespaces
                $apiUrlNamespace =  "https://dev.azure.com/{0}/_apis/securitynamespaces/{1}?api-version=6.1-preview.1" -f $($this.OrganizationContext.OrganizationName),$([Release]::SecurityNamespaceId)
                [Release]::ReleaseNamespacesPermissionObj = [WebRequestHelper]::InvokeGetWebRequest($apiUrlNamespace);
            }
            if (-not [string]::IsNullOrEmpty([Release]::SecurityNamespaceId) -and ($null -eq [Release]::TaskGroupNamespacesObj) ) {
                #Get acl for taskgroups. Its response contains descriptor of each ado group/user which have permission on the taskgroup
                $apiUrl = "https://dev.azure.com/{0}/_apis/accesscontrollists/{1}?includeExtendedInfo=True&recurse=True&api-version=6.0" -f $($this.OrganizationContext.OrganizationName),$TaskGroupSecurityNamespace
                [Release]::TaskGroupNamespacesObj = [WebRequestHelper]::InvokeGetWebRequest($apiUrl);
            }
            if (-not [string]::IsNullOrEmpty([Release]::SecurityNamespaceId) -and ($null -eq [Release]::TaskGroupNamespacePermissionObj) ) {
                #Get permission and its bit for security namespaces
                $apiUrlNamespace =  "https://dev.azure.com/{0}/_apis/securitynamespaces/{1}?api-version=6.1-preview.1" -f $($this.OrganizationContext.OrganizationName),$TaskGroupSecurityNamespace
                [Release]::TaskGroupNamespacePermissionObj = [WebRequestHelper]::InvokeGetWebRequest($apiUrlNamespace);
            }
        }

        if ([Helpers]::CheckMember($this.ControlSettings.Release, "CheckForInheritedPermissions") -and $this.ControlSettings.Release.CheckForInheritedPermissions) {
            #allow permission bit for inherited permission is '3'
            $this.excessivePermissionBits = @(1, 3)
        }
    }

    hidden [ControlResult] CheckCredInReleaseVariables([ControlResult] $controlResult)
    {
        if([Helpers]::CheckMember([ConfigurationManager]::GetAzSKSettings(),"SecretsScanToolFolder"))
        {
            $ToolFolderPath =  [ConfigurationManager]::GetAzSKSettings().SecretsScanToolFolder
            $SecretsScanToolName = [ConfigurationManager]::GetAzSKSettings().SecretsScanToolName
            if((-not [string]::IsNullOrEmpty($ToolFolderPath)) -and (Test-Path $ToolFolderPath) -and (-not [string]::IsNullOrEmpty($SecretsScanToolName)))
            {
                $ToolPath = Get-ChildItem -Path $ToolFolderPath -File -Filter $SecretsScanToolName -Recurse
                if($ToolPath)
                {
                    if($this.ReleaseObj)
                    {
                        try
                        {
                            $releaseDefFileName = $($this.ResourceContext.ResourceName).Replace(" ","")
                            $releaseDefPath = [Constants]::AzSKTempFolderPath + "\Releases\"+ $releaseDefFileName + "\";
                            if(-not (Test-Path -Path $releaseDefPath))
                            {
                                New-Item -ItemType Directory -Path $releaseDefPath -Force | Out-Null
                            }

                            $this.ReleaseObj | ConvertTo-Json -Depth 5 | Out-File "$releaseDefPath\$releaseDefFileName.json"
                            $searcherPath = Get-ChildItem -Path $($ToolPath.Directory.FullName) -Include "buildsearchers.xml" -Recurse
                            ."$($Toolpath.FullName)" -I $releaseDefPath -S "$($searcherPath.FullName)" -f csv -Ve 1 -O "$releaseDefPath\Scan"

                            $scanResultPath = Get-ChildItem -Path $releaseDefPath -File -Include "*.csv"

                            if($scanResultPath -and (Test-Path $scanResultPath.FullName))
                            {
                                $credList = Get-Content -Path $scanResultPath.FullName | ConvertFrom-Csv
                                if(($credList | Measure-Object).Count -gt 0)
                                {
                                    $controlResult.AddMessage("No. of credentials found:" + ($credList | Measure-Object).Count )
                                    $controlResult.AddMessage([VerificationResult]::Failed,"Found credentials in variables")
                                    $controlResult.AdditionalInfo += "No. of credentials found: " + ($credList | Measure-Object).Count;
                                }
                                else {
                                    $controlResult.AddMessage([VerificationResult]::Passed,"No credentials found in variables")
                                }
                            }
                        }
                        catch {
                            #Publish Exception
                            $this.PublishException($_);
                            $controlResult.LogException($_)
                        }
                        finally
                        {
                            #Clean temp folders
                            Remove-ITem -Path $releaseDefPath -Recurse
                        }
                    }
                }
            }

        }
       else
       {
            try {
                $patterns = $this.ControlSettings.Patterns | where {$_.RegexCode -eq "SecretsInRelease"} | Select-Object -Property RegexList;
                $exclusions = $this.ControlSettings.Release.ExcludeFromSecretsCheck;
                $varList = @();
                $varGrpList = @();
                $noOfCredFound = 0;
                $restrictedVarGrp = $false;

                if(($patterns | Measure-Object).Count -gt 0)
                {
                    if([Helpers]::CheckMember($this.ReleaseObj,"variables"))
                    {
                        Get-Member -InputObject $this.ReleaseObj.variables -MemberType Properties | ForEach-Object {
                            if([Helpers]::CheckMember($this.ReleaseObj.variables.$($_.Name),"value") -and  (-not [Helpers]::CheckMember($this.ReleaseObj.variables.$($_.Name),"isSecret")))
                            {
                                $releaseVarName = $_.Name
                                $releaseVarValue = $this.ReleaseObj[0].variables.$releaseVarName.value
                                <# code to collect stats for var names
                                    if ([Release]::ReleaseVarNames.Keys -contains $releaseVarName)
                                    {
                                            [Release]::ReleaseVarNames.$releaseVarName++
                                    }
                                    else
                                    {
                                        [Release]::ReleaseVarNames.$releaseVarName = 1
                                    }
                                #>
                                if ($exclusions -notcontains $releaseVarName)
                                {
                                    for ($i = 0; $i -lt $patterns.RegexList.Count; $i++) {
                                        #Note: We are using '-cmatch' here.
                                        #When we compile the regex, we don't specify ignoreCase flag.
                                        #If regex is in text form, the match will be case-sensitive.
                                        if ($releaseVarValue -cmatch $patterns.RegexList[$i]) {
                                            $noOfCredFound +=1
                                            $varList += "$releaseVarName";
                                            break;
                                        }
                                    }
                                }
                            }
                        }
                    }

                    if([Helpers]::CheckMember($this.ReleaseObj[0],"variableGroups") -and (($this.ReleaseObj[0].variableGroups) | Measure-Object).Count -gt 0)
                    {
                        $varGrps = @();
                        $varGrps += $this.ReleaseObj[0].variableGroups
                        $envCount = ($this.ReleaseObj[0].environments).Count

                        if ($envCount -gt 0)
                        {
                            # Each release pipeline has atleast 1 env.
                            for($i=0; $i -lt $envCount; $i++)
                            {
                                if((($this.ReleaseObj[0].environments[$i].variableGroups) | Measure-Object).Count -gt 0)
                                {
                                    $varGrps += $this.ReleaseObj[0].environments[$i].variableGroups
                                }
                            }

                            $varGrpObj = @();
                            $varGrps | ForEach-Object {
                                try
                                {
                                    $varGrpURL = ("https://dev.azure.com/{0}/{1}/_apis/distributedtask/variablegroups?groupIds={2}&api-version=6.1-preview.2") -f $($this.OrganizationContext.OrganizationName), $this.ProjectId, $_;
                                    $varGrpObj += [WebRequestHelper]::InvokeGetWebRequest($varGrpURL);
                                }
                                catch
                                {
                                    $controlResult.LogException($_)
                                    #eat exception if api failure occurs
                                }
                            }

                            $varGrpObj| ForEach-Object {
                            $varGrp = $_
                            if([Helpers]::CheckMember($_ ,"variables")){
                                Get-Member -InputObject $_.variables -MemberType Properties | ForEach-Object {

                                    if([Helpers]::CheckMember($varGrp.variables.$($_.Name) ,"value") -and  (-not [Helpers]::CheckMember($varGrp.variables.$($_.Name) ,"isSecret")))
                                    {
                                        $varName = $_.Name
                                        $varValue = $varGrp.variables.$($_.Name).value
                                        if ($exclusions -notcontains $varName)
                                        {
                                            for ($i = 0; $i -lt $patterns.RegexList.Count; $i++) {
                                                #Note: We are using '-cmatch' here.
                                                #When we compile the regex, we don't specify ignoreCase flag.
                                                #If regex is in text form, the match will be case-sensitive.
                                                if ($varValue -cmatch $patterns.RegexList[$i]) {
                                                    $noOfCredFound +=1
                                                    $varGrpList += "[$($varGrp.Name)]:$varName";
                                                    break
                                                    }
                                                }
                                            }
                                        }
                                    }
                                }
                                else{
                                    $restrictedVarGrp = $true;
                                }
                            }
                        }
                    }
                    if($restrictedVarGrp -eq $true)
                    {
                        $controlResult.AddMessage([VerificationResult]::Manual, "Could not evaluate release definition as one or more variable group has restricted access.");
                    }
                    elseif($noOfCredFound -eq 0)
                    {
                        $controlResult.AddMessage([VerificationResult]::Passed, "No secrets found in release definition.");
                    }
                    else {
                        $controlResult.AddMessage([VerificationResult]::Failed, "Found secrets in release definition.");
                        $stateData = @{
                            VariableList = @();
                            VariableGroupList = @();
                        };
                        if(($varList | Measure-Object).Count -gt 0 )
                        {
                            $varList = $varList | select -Unique | Sort-object
                            $stateData.VariableList += $varList
                            $controlResult.AddMessage("`nTotal number of variable(s) containing secret: ", ($varList | Measure-Object).Count);
                            $controlResult.AddMessage("`nList of variable(s) containing secret: ", $varList);
                            $controlResult.AdditionalInfo += "Total number of variable(s) containing secret: " + ($varList | Measure-Object).Count;
                        }
                        if(($varGrpList | Measure-Object).Count -gt 0 )
                        {
                            $varGrpList = $varGrpList | select -Unique | Sort-object
                            $stateData.VariableGroupList += $varGrpList
                            $controlResult.AddMessage("`nTotal number of variable(s) containing secret in variable group(s): ", ($varGrpList | Measure-Object).Count);
                            $controlResult.AddMessage("`nList of variable(s) containing secret in variable group(s): ", $varGrpList);
                            $controlResult.AdditionalInfo += "Total number of variable(s) containing secret in variable group(s): " + ($varGrpList | Measure-Object).Count;
                        }
                        $controlResult.SetStateData("List of variable and variable group containing secret: ", $stateData );
                    }
                    $patterns = $null;
                }
                else
                {
                    $controlResult.AddMessage([VerificationResult]::Manual, "Regular expressions for detecting credentials in pipeline variables are not defined in your organization.");
                }
            }
            catch {
                $controlResult.AddMessage([VerificationResult]::Manual, "Could not evaluate release definition.");
                $controlResult.AddMessage($_);
                $controlResult.LogException($_)
            }

         }

        return $controlResult;
    }

    hidden [ControlResult] CheckForInactiveReleases([ControlResult] $controlResult)
    {
        try
        {
            if ($this.releaseActivityDetail.message -eq 'Could not fetch release details.')
            {
                $controlResult.AddMessage([VerificationResult]::Error, $this.releaseActivityDetail.message);
                if ($null -ne $this.releaseActivityDetail.errorObject)
                {
                    $controlResult.LogException($this.releaseActivityDetail.errorObject)
                }
            }
            elseif ($this.releaseActivityDetail.isReleaseActive)
            {
                $controlResult.AddMessage([VerificationResult]::Passed, $this.releaseActivityDetail.message);
            }
            else
            {
                if ($null -ne $this.releaseActivityDetail.releaseCreationDate)
                {
                    $inactiveLimit = $this.ControlSettings.Release.ReleaseHistoryPeriodInDays
                    if ((((Get-Date) - $this.releaseActivityDetail.releaseCreationDate).Days) -lt $inactiveLimit)
                    {
                        $controlResult.AddMessage([VerificationResult]::Passed, "Release was created within last $inactiveLimit days but never triggered.");
                    }
                    else
                    {
                        $controlResult.AddMessage([VerificationResult]::Failed, $this.releaseActivityDetail.message);
                    }
                    $controlResult.AddMessage("The release pipeline was created on: $($this.releaseActivityDetail.releaseCreationDate)");
                    $controlResult.AdditionalInfo += "The release pipeline was created on: " + $this.releaseActivityDetail.releaseCreationDate;
                }
                else
                {
                    $controlResult.AddMessage([VerificationResult]::Failed, $this.releaseActivityDetail.message);
                }
            }

            if ($null -ne $this.releaseActivityDetail.latestReleaseTriggerDate)
            {
                $controlResult.AddMessage("Last release date of pipeline: $($this.releaseActivityDetail.latestReleaseTriggerDate)");
                $controlResult.AdditionalInfo += "Last release date of pipeline: " + $this.releaseActivityDetail.latestReleaseTriggerDate;
                $releaseInactivePeriod = ((Get-Date) - $this.releaseActivityDetail.latestReleaseTriggerDate).Days
                $controlResult.AddMessage("The release was inactive from last $($releaseInactivePeriod) days.");
            }
        }
        catch
        {
            $controlResult.AddMessage([VerificationResult]::Error, "Could not fetch release details.");
            $controlResult.LogException($_)
        }

        # below code provide the details of build artifacts associated with release pipeline
        if ($this.ReleaseObj)
        {
            if([Helpers]::CheckMember($this.ReleaseObj[0], "artifacts.definitionReference.definition"))
            {
                #$associatedBuildArtifacts = $this.ReleaseObj[0].artifacts | where-object {$_.type -eq "Build"}
                $allArtifacts = $this.ReleaseObj[0].artifacts | Select-Object @{Label="Type"; Expression={$_.type}},  @{Label="Id"; Expression={$_.definitionReference.definition.id}}, @{Label="Name"; Expression={$_.definitionReference.definition.name}}
                $buildArtifacts = $allArtifacts | where-object {$_.Type -eq "Build"}
                $otherArtifacts = $allArtifacts | where-object {$_.Type -ne "Build"}
                if(($null -ne $buildArtifacts) -and ($buildArtifacts | Measure-Object).Count -gt 0)
                {
                    $controlResult.AddMessage("Build artifacts associated with release pipeline: ", $buildArtifacts);
                    $controlResult.AdditionalInfo += "Build artifacts associated with release pipeline: " + [JsonHelper]::ConvertToJsonCustomCompressed($buildArtifacts);
                }
                if(($null -ne $otherArtifacts) -and ($otherArtifacts | Measure-Object).Count -gt 0)
                {
                    $controlResult.AddMessage("Other artifacts associated with release pipeline: ", $otherArtifacts);
                    $controlResult.AdditionalInfo += "Other artifacts associated with release pipeline: " + [JsonHelper]::ConvertToJsonCustomCompressed($otherArtifacts);
                }
            }
        }

        return $controlResult
    }

    hidden [ControlResult] CheckInheritedPermissions([ControlResult] $controlResult)
    {
        if ([Release]::IsOAuthScan -eq $true)
        {
            if($null -ne [Release]::ReleaseNamespacesObj -and [Helpers]::CheckMember([Release]::ReleaseNamespacesObj,"token"))
            {
                $resource = $this.projectid+ "/" + $this.ReleaseObj.id

                # Filter namespaceobj for current release
                $obj = [Release]::ReleaseNamespacesObj | where-object {$_.token -eq $resource}

                # If current release object is not found, get project level obj. (Seperate release obj is not available if project level permissions are being used on pipeline)
                if(($obj | Measure-Object).Count -eq 0)
                {
                    $obj = [Release]::ReleaseNamespacesObj | where-object {$_.token -eq $this.projectid}
                }

                if((($obj | Measure-Object).Count -gt 0) -and $obj.inheritPermissions -eq $false)
                {
                    $controlResult.AddMessage([VerificationResult]::Passed,"Inherited permissions are disabled on release pipeline.");
                }
                else
                {
                    $controlResult.AddMessage([VerificationResult]::Failed,"Inherited permissions are enabled on release pipeline.");
                }
            }
            else
            {
                $controlResult.AddMessage([VerificationResult]::Manual,"Unable to fetch release pipeline details. $($_). Please verify from portal that permission inheritance is turned OFF.");
            }
        }
        else{
            # Here 'permissionSet' = security namespace identifier, 'token' = project id
            $apiURL = "https://dev.azure.com/{0}/{1}/_admin/_security/index?useApiUrl=true&permissionSet={2}&token={3}%2F{4}&style=min" -f $($this.OrganizationContext.OrganizationName), $($this.ProjectId), $([Release]::SecurityNamespaceId), $($this.ProjectId), $($this.ReleaseObj.id);
            $header = [WebRequestHelper]::GetAuthHeaderFromUri($apiURL);
            $responseObj = Invoke-RestMethod -Method Get -Uri $apiURL -Headers $header -UseBasicParsing
            $responseObj = ($responseObj.SelectNodes("//script") | Where-Object { $_.class -eq "permissions-context" }).InnerXML | ConvertFrom-Json;
            if($responseObj.inheritPermissions -eq $true)
            {
                $controlResult.AddMessage([VerificationResult]::Failed,"Inherited permissions are enabled on release pipeline.");
            }
            else
            {
                $controlResult.AddMessage([VerificationResult]::Passed,"Inherited permissions are disabled on release pipeline.");
            }
            $header = $null;
            $responseObj = $null;
        }
        return $controlResult
    }

    hidden [ControlResult] CheckPreDeploymentApproval ([ControlResult] $controlResult)
    {
        $releaseStages = $this.ReleaseObj.environments;# | Where-Object { $this.ControlSettings.Release.RequirePreDeployApprovals -contains $_.name.Trim()}
        if($releaseStages)
        {
            $nonComplaintStages = $releaseStages | ForEach-Object {
                $releaseStage = $_
                if([Helpers]::CheckMember($releaseStage,"preDeployApprovals.approvals.isAutomated") -and $releaseStage.preDeployApprovals.approvals.isAutomated -eq $true)
                {
                    return $($releaseStage | Select-Object id,name, @{Name = "Owner"; Expression = {$_.owner.displayName}})
                }
            }

            if(($nonComplaintStages | Measure-Object).Count -gt 0)
            {
                $controlResult.AddMessage([VerificationResult]::Failed,"Pre-deployment approvals is not enabled for following release stages in [$($this.ReleaseObj.name)] pipeline.", $nonComplaintStages);
            }
            else
            {
                $complaintStages = $releaseStages | ForEach-Object {
                    $releaseStage = $_
                    return  $($releaseStage | Select-Object id,name, @{Name = "Owner"; Expression = {$_.owner.displayName}})
                }
                $controlResult.AddMessage([VerificationResult]::Passed,"Pre-deployment approvals is enabled for following release stages.", $complaintStages);
                $complaintStages = $null;
            }
            $nonComplaintStages =$null;
        }
        else
        {
            $otherStages = $this.ReleaseObj.environments | ForEach-Object {
                $releaseStage = $_
                if([Helpers]::CheckMember($releaseStage,"preDeployApprovals.approvals.isAutomated") -and $releaseStage.preDeployApprovals.approvals.isAutomated -ne $true)
                {
                    return $($releaseStage | Select-Object id,name, @{Name = "Owner"; Expression = {$_.owner.displayName}})
                }
            }

            if ($otherStages) {
                $controlResult.AddMessage([VerificationResult]::Verify,"No release stage found matching to $($this.ControlSettings.Release.RequirePreDeployApprovals -join ", ") in [$($this.ReleaseObj.name)] pipeline. Verify that pre-deployment approval is enabled for below found environments.");
                $controlResult.AddMessage($otherStages)
            }
            else {
                $controlResult.AddMessage([VerificationResult]::Passed,"No release stage found matching to $($this.ControlSettings.Release.RequirePreDeployApprovals -join ", ") in [$($this.ReleaseObj.name)] pipeline. Found pre-deployment approval is enabled for present environments.");
            }
            $otherStages =$null;
        }
        $releaseStages = $null;
        return $controlResult
    }

    hidden [ControlResult] CheckPreDeploymentApprovers ([ControlResult] $controlResult)
    {
        $releaseStages = $this.ReleaseObj.environments | Where-Object { $this.ControlSettings.Release.RequirePreDeployApprovals -contains $_.name.Trim()}
        if($releaseStages)
        {
            $approversList = $releaseStages | ForEach-Object {
                $releaseStage = $_
                if([Helpers]::CheckMember($releaseStage,"preDeployApprovals.approvals.isAutomated") -and $($releaseStage.preDeployApprovals.approvals.isAutomated -eq $false))
                {
                    if([Helpers]::CheckMember($releaseStage,"preDeployApprovals.approvals.approver"))
                    {
                        return @{ ReleaseStageName= $releaseStage.Name; Approvers = $releaseStage.preDeployApprovals.approvals.approver }
                    }
                }
            }
            if(($approversList | Measure-Object).Count -eq 0)
            {
                $controlResult.AddMessage([VerificationResult]::Failed,"No approvers found. Please ensure that pre-deployment approval is enabled for production release stages");
            }
            else
            {
                $stateData = @();
                $stateData += $approversList;
                $controlResult.AddMessage([VerificationResult]::Verify,"Validate users/groups added as approver within release pipeline.",$stateData);
                $controlResult.SetStateData("List of approvers for each release stage: ", $stateData);
            }
            $approversList = $null;
        }
        else
        {
            $controlResult.AddMessage([VerificationResult]::Passed,"No release stage found matching to $($this.ControlSettings.Release.RequirePreDeployApprovals -join ", ") in [$($this.ReleaseObj.name)] pipeline.");
        }
        $releaseStages = $null;
        return $controlResult
    }

    hidden [ControlResult] CheckRBACAccess ([ControlResult] $controlResult)
    {
        <#
        {
            "ControlID": "ADO_Release_AuthZ_Grant_Min_RBAC_Access",
            "Description": "All teams/groups must be granted minimum required permissions on release definition.",
            "Id": "Release110",
            "ControlSeverity": "High",
            "Automated": "Yes",
            "MethodName": "CheckRBACAccess",
            "Rationale": "Granting minimum access by leveraging RBAC feature ensures that users are granted just enough permissions to perform their tasks. This minimizes exposure of the resources in case of user/service account compromise.",
            "Recommendation": "Refer: https://docs.microsoft.com/en-us/azure/devops/pipelines/policies/permissions?view=vsts and https://dev.azure.com/microsoftit/OneITVSO/_wiki/wikis/OneITVSO.wiki?wikiVersion=GBwikiMaster&pagePath=%2FEngineering%20Guide%2FOneITVSO%2FDevelopment%2FRelease%2FHow%20To%20Secure%20Your%20Release%20Definition&pageId=2419&anchor=desired-state",
            "Tags": [
                "SDL",
                "TCP",
                "Automated",
                "AuthZ",
                "RBAC"
            ],
            "Enabled": true
        }
 
        #>
        if ([Release]::IsOAuthScan -eq $true)
        {
            if([AzSKRoot]::IsDetailedScanRequired -eq $true)
            {
                $exemptedUserIdentities = $this.ReleaseObj.createdBy.id
                $exemptedUserIdentities += $this.ControlSettings.Release.ExemptedUserIdentities

                $resource = $this.projectid+ "/" + $this.ReleaseObj.id

                # Filter namespaceobj for current release
                $obj = [Release]::ReleaseNamespacesObj | where-object {$_.token -eq $resource}

                # If current release object is not found, get project level obj. (Seperate release obj is not available if project level permissions are being used on pipeline)
                if(($obj | Measure-Object).Count -eq 0)
                {
                    $obj = [Release]::ReleaseNamespacesObj | where-object {$_.token -eq $this.projectid}
                }

                if(($obj | Measure-Object).Count -gt 0)
                {

                    $properties = $obj.acesDictionary | Get-Member -MemberType Properties
                    #$permissionsInBit =0
                    $editPerms= @();
                    $accessList =@();

                    try
                    {
                        #Use descriptors from acl to make identities call, using each descriptor see permissions mapped to Contributors
                        $properties | ForEach-Object{
                            $AllowedPermissionsInBit = 0 #Explicitly allowed permissions
                            $InheritedAllowedPermissionsInBit = 0 #Inherited

                            $apiUrlIdentity = "https://vssps.dev.azure.com/{0}/_apis/identities?descriptors={1}&api-version=6.0" -f $($this.OrganizationContext.OrganizationName), $($obj.acesDictionary.$($_.Name).descriptor)
                            $responseObj = [WebRequestHelper]::InvokeGetWebRequest($apiUrlIdentity);

                            if([Helpers]::CheckMember($responseObj,"customDisplayName"))
                            {
                                $displayName = $responseObj.customDisplayName  #For User isentity type
                            }
                            else{
                                $displayName = $responseObj.providerDisplayName
                            }

                            if($responseObj.providerDisplayName -notmatch  $exemptedUserIdentities)
                            {
                                $AllowedPermissionsInBit = $obj.acesDictionary.$($_.Name).allow
                                if([Helpers]::CheckMember($obj.acesDictionary.$($_.Name).extendedInfo,"inheritedAllow"))
                                {
                                    $InheritedAllowedPermissionsInBit = $obj.acesDictionary.$($_.Name).extendedInfo.inheritedAllow
                                }

                                $permissions = [Helpers]::ResolveAllPermissions($AllowedPermissionsInBit ,$InheritedAllowedPermissionsInBit, [Release]::ReleaseNamespacesPermissionObj.actions)
                                if(($permissions | Measure-Object).Count -ne 0)
                                {
                                    $accessList += New-Object -TypeName psobject -Property @{IdentityName= $displayName ; IdentityType= $responseObj.properties.SchemaClassName.'$value'; Permissions = $permissions}
                                }
                            }
                        }

                        if(($accessList | Measure-Object).Count -ne 0)
                        {
                            $accessList = $accessList | sort-object -Property IdentityName, IdentityType
                            $controlResult.AddMessage("Total number of identities that have access to release pipeline: ", ($accessList | Measure-Object).Count);
                            $controlResult.AddMessage([VerificationResult]::Verify,"Validate that the following identities have been provided with minimum RBAC access to [$($this.ResourceContext.ResourceName)] pipeline.", $accessList);
                            $controlResult.SetStateData("Release pipeline access list: ", $accessList);
                            $controlResult.AdditionalInfo += "Total number of identities that have access to release pipeline: " + ($accessList | Measure-Object).Count;
                            $controlResult.AdditionalInfo += "Total number of user identities that have access to release pipeline: " + (($accessList | Where-Object {$_.IdentityType -eq 'user'}) | Measure-Object).Count;
                            $controlResult.AdditionalInfo += "Total number of group identities that have access to release pipeline: " + (($accessList | Where-Object {$_.IdentityType -eq 'group'}) | Measure-Object).Count;

                        }
                        else
                        {
                            $controlResult.AddMessage([VerificationResult]::Passed,"No identities have been explicitly provided with RBAC access to [$($this.ResourceContext.ResourceName)] pipeline other than release pipeline owner and default groups");
                            $controlResult.AddMessage("Total number of exempted user identities:",($exemptedUserIdentities | Measure-Object).Count);
                            $controlResult.AddMessage("List of exempted user identities:",$exemptedUserIdentities)
                            $controlResult.AdditionalInfo += "Total number of exempted user identities: " + ($exemptedUserIdentities | Measure-Object).Count;
                        }

                    }
                    catch
                    {
                        $controlResult.AddMessage([VerificationResult]::Manual,"Could not fetch RBAC details of the pipeline. $($_) Please verify from portal all teams/groups are granted minimum required permissions on build definition.");
                        $controlResult.LogException($_)
                    }
                }
                else {
                    $controlResult.AddMessage([VerificationResult]::Manual,"Could not fetch RBAC details of the pipeline.");
                }
            }
            else
            {
                $controlResult.AddMessage([VerificationResult]::Verify,"Validate that all the identities have been provided with minimum RBAC access to [$($this.ResourceContext.ResourceName)] pipeline.");
            }
        }
        else {

            $failMsg = $null
            try
            {
                # This functions is to check users permissions on release definition. Groups' permissions check is not added here.
                $releaseDefinitionPath = $this.ReleaseObj.Path.Trim("\").Replace(" ","+").Replace("\","%2F")
                $apiURL = "https://dev.azure.com/{0}/{1}/_api/_security/ReadExplicitIdentitiesJson?__v=5&permissionSetId={2}&permissionSetToken={3}%2F{4}%2F{5}" -f $($this.OrganizationContext.OrganizationName), $($this.ProjectId), $([Release]::SecurityNamespaceId), $($this.ProjectId), $($releaseDefinitionPath) ,$($this.ReleaseObj.id);

                $sw = [System.Diagnostics.Stopwatch]::StartNew();
                $responseObj = [WebRequestHelper]::InvokeGetWebRequest($apiURL);
                $sw.Stop()

                $accessList = @()
                $exemptedUserIdentities = @()

                #Below code added to send perf telemtry
                if ($this.IsAIEnabled)
                {
                    $properties =  @{
                        TimeTakenInMs = $sw.ElapsedMilliseconds;
                        ApiUrl = $apiURL;
                        Resourcename = $this.ResourceContext.ResourceName;
                        ResourceType = $this.ResourceContext.ResourceType;
                        PartialScanIdentifier = $this.PartialScanIdentifier;
                        CalledBy = "CheckRBACAccess";
                    }
                    [AIOrgTelemetryHelper]::PublishEvent( "Api Call Trace",$properties, @{})
                }

                # Fetch detailed permissions of each of group/user from above api call
                # To be evaluated only when -DetailedScan flag is used in GADS command along with control ids or when controls are to be attested
                if([AzSKRoot]::IsDetailedScanRequired -eq $true)
                {
                    # exclude release owner
                    $exemptedUserIdentities += $this.ReleaseObj.createdBy.id
                    if([Helpers]::CheckMember($responseObj,"identities") -and ($responseObj.identities|Measure-Object).Count -gt 0)
                    {
                        $exemptedUserIdentities += $responseObj.identities | Where-Object { $_.IdentityType -eq "user" }| ForEach-Object {
                            $identity = $_
                            $exemptedIdentity = $this.ControlSettings.Release.ExemptedUserIdentities | Where-Object { $_.Domain -eq $identity.Domain -and $_.DisplayName -eq $identity.DisplayName }
                            if(($exemptedIdentity | Measure-Object).Count -gt 0)
                            {
                                return $identity.TeamFoundationId
                            }
                        }

                        $accessList += $responseObj.identities | Where-Object { $_.IdentityType -eq "user" } | ForEach-Object {
                            $identity = $_
                            if($exemptedUserIdentities -notcontains $identity.TeamFoundationId)
                            {
                                $apiURL = "https://dev.azure.com/{0}/{1}/_api/_security/DisplayPermissions?__v=5&tfid={2}&permissionSetId={3}&permissionSetToken={4}%2F{5}%2F{6}" -f $($this.OrganizationContext.OrganizationName), $($this.ProjectId), $($identity.TeamFoundationId) ,$([Release]::SecurityNamespaceId), $($this.ProjectId), $($releaseDefinitionPath), $($this.ReleaseObj.id);
                                $identityPermissions = [WebRequestHelper]::InvokeGetWebRequest($apiURL);
                                $configuredPermissions = $identityPermissions.Permissions | Where-Object {$_.permissionDisplayString -ne 'Not set'}
                                return @{ IdentityName = $identity.DisplayName; IdentityType = $identity.IdentityType; Permissions = ($configuredPermissions | Select-Object @{Name="Name"; Expression = {$_.displayName}},@{Name="Permission"; Expression = {$_.permissionDisplayString}}) }
                            }
                        }

                        $accessList += $responseObj.identities | Where-Object { $_.IdentityType -eq "group" } | ForEach-Object {
                            $identity = $_
                            $apiURL = "https://dev.azure.com/{0}/{1}/_api/_security/DisplayPermissions?__v=5&tfid={2}&permissionSetId={3}&permissionSetToken={4}%2F{5}%2F{6}" -f $($this.OrganizationContext.OrganizationName), $($this.ProjectId), $($identity.TeamFoundationId) ,$([Release]::SecurityNamespaceId), $($this.ProjectId), $($releaseDefinitionPath), $($this.ReleaseObj.id);
                            $identityPermissions = [WebRequestHelper]::InvokeGetWebRequest($apiURL);
                            $configuredPermissions = $identityPermissions.Permissions | Where-Object {$_.permissionDisplayString -ne 'Not set'}
                            return @{ IdentityName = $identity.DisplayName; IdentityType = $identity.IdentityType; IsAadGroup = $identity.IsAadGroup ;Permissions = ($configuredPermissions | Select-Object @{Name="Name"; Expression = {$_.displayName}},@{Name="Permission"; Expression = {$_.permissionDisplayString}}) }
                        }
                    }

                    if(($accessList | Measure-Object).Count -ne 0)
                    {
                        $accessList= $accessList | Select-Object -Property @{Name="IdentityName"; Expression = {$_.IdentityName}},@{Name="IdentityType"; Expression = {$_.IdentityType}},@{Name="Permissions"; Expression = {$_.Permissions}}
                        $controlResult.AddMessage("Total number of identities that have access to release pipeline: ", ($accessList | Measure-Object).Count);
                        $controlResult.AddMessage([VerificationResult]::Verify,"Validate that the following identities have been provided with minimum RBAC access to [$($this.ResourceContext.ResourceName)] pipeline", $accessList);
                        $controlResult.SetStateData("Release pipeline access list: ", ($responseObj.identities | Select-Object -Property @{Name="IdentityName"; Expression = {$_.FriendlyDisplayName}},@{Name="IdentityType"; Expression = {$_.IdentityType}},@{Name="Scope"; Expression = {$_.Scope}}));
                        $controlResult.AdditionalInfo += "Total number of identities that have access to release pipeline: " + ($accessList | Measure-Object).Count;
                        $controlResult.AdditionalInfo += "Total number of user identities that have access to release pipeline: " + (($accessList | Where-Object {$_.IdentityType -eq 'user'}) | Measure-Object).Count;
                        $controlResult.AdditionalInfo += "Total number of group identities that have access to release pipeline: " + (($accessList | Where-Object {$_.IdentityType -eq 'group'}) | Measure-Object).Count;
                    }
                    else
                    {
                        $controlResult.AddMessage([VerificationResult]::Passed,"No identities have been explicitly provided with RBAC access to [$($this.ResourceContext.ResourceName)] pipeline other than release pipeline owner and default groups");
                        $controlResult.AddMessage("Total number of exempted user identities:",($exemptedUserIdentities | Measure-Object).Count);
                        $controlResult.AddMessage("List of exempted user identities:",$exemptedUserIdentities)
                        $controlResult.AdditionalInfo += "Total number of exempted user identities: " + ($exemptedUserIdentities | Measure-Object).Count;
                    }
                }
                else{
                    # Non detailed scan results
                    if(($responseObj.identities|Measure-Object).Count -gt 0)
                    {
                        $accessList= $responseObj.identities | Select-Object -Property @{Name="IdentityName"; Expression = {$_.FriendlyDisplayName}},@{Name="IdentityType"; Expression = {$_.IdentityType}},@{Name="Scope"; Expression = {$_.Scope}}
                        $controlResult.AddMessage("Total number of identities that have access to release pipeline: ", ($accessList | Measure-Object).Count);
                        $controlResult.AddMessage([VerificationResult]::Verify,"Validate that the following identities have been provided with minimum RBAC access to [$($this.ResourceContext.ResourceName)] pipeline.", $accessList);
                        $controlResult.SetStateData("Release pipeline access list: ", $accessList);
                        $controlResult.AdditionalInfo += "Total number of identities that have access to release pipeline: " + ($accessList | Measure-Object).Count;
                        $controlResult.AdditionalInfo += "Total number of user identities that have access to release pipeline: " + (($accessList | Where-Object {$_.IdentityType -eq 'user'}) | Measure-Object).Count;
                        $controlResult.AdditionalInfo += "Total number of group identities that have access to release pipeline: " + (($accessList | Where-Object {$_.IdentityType -eq 'group'}) | Measure-Object).Count;
                    }
                }

                $accessList = $null;
                $exemptedUserIdentities =$null;
                $responseObj = $null;
            }
            catch
            {
                $failMsg = $_
                $controlResult.LogException($_)
            }
            if(![string]::IsNullOrEmpty($failMsg))
            {
                $controlResult.AddMessage([VerificationResult]::Manual,"Unable to fetch release pipeline details. $($failMsg)Please verify from portal all teams/groups are granted minimum required permissions on release definition.");
            }
        }
        return $controlResult
    }

    hidden [ControlResult] CheckExternalSources([ControlResult] $controlResult)
    {
        if(($this.ReleaseObj | Measure-Object).Count -gt 0)
        {
            if( [Helpers]::CheckMember($this.ReleaseObj[0],"artifacts") -and ($this.ReleaseObj[0].artifacts | Measure-Object).Count -gt 0){
               # $sourcetypes = @();
                $sourcetypes = $this.ReleaseObj[0].artifacts;
                $nonadoresource = $sourcetypes | Where-Object { $_.type -ne 'Git'} ;

               if( ($nonadoresource | Measure-Object).Count -gt 0){
                   $nonadoresource = $nonadoresource | Select-Object -Property @{Name="alias"; Expression = {$_.alias}},@{Name="Type"; Expression = {$_.type}}
                   $stateData = @();
                   $stateData += $nonadoresource;
                   $controlResult.AddMessage([VerificationResult]::Verify,"Pipeline contains artifacts from below external sources.", $stateData);
                   $controlResult.SetStateData("Pipeline contains artifacts from below external sources.", $stateData);
                   $controlResult.AdditionalInfo += "Pipeline contains artifacts from these external sources: " + [JsonHelper]::ConvertToJsonCustomCompressed($stateData);
               }
               else {
                $controlResult.AddMessage([VerificationResult]::Passed,"Pipeline does not contain artifacts from external sources");
               }
               $sourcetypes = $null;
               $nonadoresource = $null;
           }
           else {
            $controlResult.AddMessage([VerificationResult]::Passed,"Pipeline does not contain any source repositories");
           }
        }

        return $controlResult;
    }

    hidden [ControlResult] CheckSettableAtReleaseTime([ControlResult] $controlResult)
    {
      try {

        if([Helpers]::CheckMember($this.ReleaseObj[0],"variables"))
        {
           $setablevar =@();
           $nonsetablevar =@();

           Get-Member -InputObject $this.ReleaseObj[0].variables -MemberType Properties | ForEach-Object {
            if([Helpers]::CheckMember($this.ReleaseObj[0].variables.$($_.Name),"allowOverride") )
            {
                $setablevar +=  $_.Name;
            }
            else {
                $nonsetablevar +=$_.Name;
            }
           }
           if(($setablevar | Measure-Object).Count -gt 0){
                $controlResult.AddMessage("Total number of variables that are settable at release time: ", ($setablevar | Measure-Object).Count);
                $controlResult.AddMessage([VerificationResult]::Verify,"The below variables are settable at release time: ",$setablevar);
                $controlResult.AdditionalInfo += "Total number of variables that are settable at release time: " + ($setablevar | Measure-Object).Count;
                $controlResult.SetStateData("Variables settable at release time: ", $setablevar);
                if ($nonsetablevar) {
                    $controlResult.AddMessage("The below variables are not settable at release time: ",$nonsetablevar);
                }
           }
           else
           {
                $controlResult.AddMessage([VerificationResult]::Passed, "No variables were found in the release pipeline that are settable at release time.");
           }

        }
        else {
            $controlResult.AddMessage([VerificationResult]::Passed,"No variables were found in the release pipeline");
        }
       }
       catch {
           $controlResult.AddMessage([VerificationResult]::Manual,"Could not fetch release pipeline variables.");
           $controlResult.LogException($_)
       }
     return $controlResult;
    }

    hidden [ControlResult] CheckSettableAtReleaseTimeForURL([ControlResult] $controlResult)
    {
        try
        {
            if ([Helpers]::CheckMember($this.ReleaseObj[0], "variables"))
            {
                $settableURLVars = @();
                $count = 0;
                $patterns = $this.ControlSettings.Patterns | where {$_.RegexCode -eq "URLs"} | Select-Object -Property RegexList;

                if(($patterns | Measure-Object).Count -gt 0){
                    Get-Member -InputObject $this.ReleaseObj[0].variables -MemberType Properties | ForEach-Object {
                        if ([Helpers]::CheckMember($this.ReleaseObj[0].variables.$($_.Name), "allowOverride") )
                        {
                            $varName = $_.Name;
                            $varValue = $this.ReleaseObj[0].variables.$($varName).value;
                            for ($i = 0; $i -lt $patterns.RegexList.Count; $i++) {
                                if ($varValue -match $patterns.RegexList[$i]) {
                                    $count +=1
                                    $settableURLVars += @( [PSCustomObject] @{ Name = $varName; Value = $varValue } )
                                    break
                                }
                            }
                        }
                    }
                    if ($count -gt 0)
                    {
                        $controlResult.AddMessage("Total number of variables that are settable at release time and contain URL value: ", ($settableURLVars | Measure-Object).Count);
                        $controlResult.AddMessage([VerificationResult]::Failed, "Found variables that are settable at release time and contain URL value: ", $settableURLVars);
                        $controlResult.AdditionalInfo += "Total number of variables that are settable at release time and contain URL value: " + ($settableURLVars | Measure-Object).Count;
                        $controlResult.SetStateData("List of variables settable at release time and containing URL value: ", $settableURLVars);
                    }
                    else {
                        $controlResult.AddMessage([VerificationResult]::Passed, "No variables were found in the release pipeline that are settable at release time and contain URL value.");
                    }
                }
                else
                {
                    $controlResult.AddMessage([VerificationResult]::Manual, "Regular expressions for detecting URLs in pipeline variables are not defined in your organization.");
                }
            }
            else
            {
                $controlResult.AddMessage([VerificationResult]::Passed, "No variables were found in the release pipeline.");
            }
        }
        catch
        {
            $controlResult.AddMessage([VerificationResult]::Manual, "Could not fetch variables of the release pipeline.");
            $controlResult.LogException($_)
        }
        return $controlResult;
    }
    hidden [ControlResult] CheckTaskGroupEditPermission([ControlResult] $controlResult)
    {
        $taskGroups = @();

        if ([Release]::IsOAuthScan -eq $true)
        {
            $taskGroups = @();
            $projectName = $this.ResourceContext.ResourceGroupName

            #fetch all envs of pipeline.
            $releaseEnv = $this.ReleaseObj[0].environments

            #filter task groups in each such env.
            $releaseEnv | ForEach-Object {
                #Task groups have type 'metaTask' whereas individual tasks have type 'task'
                $_.deployPhases[0].workflowTasks | ForEach-Object {
                    if(([Helpers]::CheckMember($_ ,"definitiontype")) -and ($_.definitiontype -eq 'metaTask'))
                    {
                        $taskGroups += $_
                    }
                }
            }
            #Filtering unique task groups used in release pipeline.
            $taskGroups = $taskGroups | Sort-Object -Property taskId -Unique

            $editableTaskGroups = @();

            if(($taskGroups | Measure-Object).Count -gt 0)
            {
                try
                {
                    $taskGroups | ForEach-Object {
                        $taskGrpId = $_.taskId
                        $permissionsInBit = 0

                        #Get acl for your taskgroup
                        $resource = $this.projectid  + "/" + $taskGrpId
                        $obj = [Release]::TaskGroupNamespacesObj | where-object {$_.token -eq $resource}
                        $properties = $obj.acesDictionary | Get-Member -MemberType Properties

                        #Use descriptors from acl to make identities call, using each descriptor see permissions mapped to Contributors
                        $properties | ForEach-Object{
                            if ($permissionsInBit -eq 0) {
                                $apiUrlIdentity = "https://vssps.dev.azure.com/{0}/_apis/identities?descriptors={1}&api-version=6.0" -f $($this.OrganizationContext.OrganizationName), $($obj.acesDictionary.$($_.Name).descriptor)
                                $responseObj = [WebRequestHelper]::InvokeGetWebRequest($apiUrlIdentity);
                                if ($responseObj.providerDisplayName -eq "[$($projectName)]\Contributors")
                                {
                                    $permissionsInBit = $obj.acesDictionary.$($_.Name).extendedInfo.effectiveAllow
                                }
                            }
                        }

                        # ResolvePermissions method returns object if 'Edit task group' is allowed
                        $obj = [Helpers]::ResolvePermissions($permissionsInBit, [Release]::TaskGroupNamespacePermissionObj.actions, 'Edit task group')
                        if (($obj | Measure-Object).Count -gt 0){
                            $editableTaskGroups += $_.name
                        }
                    }

                    if(($editableTaskGroups | Measure-Object).Count -gt 0)
                    {
                        $controlResult.AddMessage("Total number of task groups on which contributors have edit permissions in release definition: ", ($editableTaskGroups | Measure-Object).Count);
                        $controlResult.AdditionalInfo += "Total number of task groups on which contributors have edit permissions in release definition: " + ($editableTaskGroups | Measure-Object).Count;
                        $controlResult.AddMessage([VerificationResult]::Failed,"Contributors have edit permissions on the below task groups used in release definition: ", $editableTaskGroups);
                        $controlResult.SetStateData("List of task groups used in release definition that contributors can edit: ", $editableTaskGroups);
                    }
                    else
                    {
                        $controlResult.AddMessage([VerificationResult]::Passed,"Contributors do not have edit permissions on any task groups used in release definition.");
                    }
                }
                catch
                {
                    $controlResult.AddMessage([VerificationResult]::Error,"Could not fetch the RBAC details of task groups used in the pipeline.");
                    $controlResult.LogException($_)
                }

            }
            else
            {
                $controlResult.AddMessage([VerificationResult]::Passed,"No task groups found in release definition.");
            }
        }
        else
        {
            #fetch all envs of pipeline.
            $releaseEnv = $this.ReleaseObj[0].environments

            #filter task groups in each such env.
            $releaseEnv | ForEach-Object {
                #Task groups have type 'metaTask' whereas individual tasks have type 'task'
                $_.deployPhases[0].workflowTasks | ForEach-Object {
                    if(([Helpers]::CheckMember($_ ,"definitiontype")) -and ($_.definitiontype -eq 'metaTask'))
                    {
                        $taskGroups += $_
                    }
                }
            }
            #Filtering unique task groups used in release pipeline.
            $taskGroups = $taskGroups | Sort-Object -Property taskId -Unique

            $editableTaskGroups = @();

            if(($taskGroups | Measure-Object).Count -gt 0)
            {
                $apiURL = "https://dev.azure.com/{0}/_apis/Contribution/HierarchyQuery?api-version=5.0-preview.1" -f $($this.OrganizationContext.OrganizationName)
                $projectName = $this.ResourceContext.ResourceGroupName

                try
                {
                    $taskGroups | ForEach-Object {
                        $taskGrpId = $_.taskId
                        $taskGrpURL="https://dev.azure.com/{0}/{1}/_taskgroup/{2}" -f $($this.OrganizationContext.OrganizationName), $($projectName), $($taskGrpId)
                        $permissionSetToken = "$($this.projectId)/$taskGrpId"

                        #permissionSetId = 'f6a4de49-dbe2-4704-86dc-f8ec1a294436' is the std. namespaceID. Refer: https://docs.microsoft.com/en-us/azure/devops/organizations/security/manage-tokens-namespaces?view=azure-devops#namespaces-and-their-ids
                        $inputbody = "{
                            'contributionIds': [
                                'ms.vss-admin-web.security-view-members-data-provider'
                            ],
                            'dataProviderContext': {
                                'properties': {
                                    'permissionSetId': 'f6a4de49-dbe2-4704-86dc-f8ec1a294436',
                                    'permissionSetToken': '$permissionSetToken',
                                    'sourcePage': {
                                        'url': '$taskGrpURL',
                                        'routeId':'ms.vss-distributed-task.hub-task-group-edit-route',
                                        'routeValues': {
                                            'project': '$projectName',
                                            'taskGroupId': '$taskGrpId',
                                            'controller':'Apps',
                                            'action':'ContributedHub',
                                            'viewname':'task-groups-edit'
                                        }
                                    }
                                }
                            }
                        }" | ConvertFrom-Json

                        # This web request is made to fetch all identities having access to task group - it will contain descriptor for each of them.
                        # We need contributor's descriptor to fetch its permissions on task group.
                        $responseObj = [WebRequestHelper]::InvokePostWebRequest($apiURL,$inputbody);

                        #Filtering out Contributors group.
                        if([Helpers]::CheckMember($responseObj[0],"dataProviders") -and ($responseObj[0].dataProviders.'ms.vss-admin-web.security-view-members-data-provider') -and ([Helpers]::CheckMember($responseObj[0].dataProviders.'ms.vss-admin-web.security-view-members-data-provider',"identities")))
                        {

                            $contributorObj = $responseObj[0].dataProviders.'ms.vss-admin-web.security-view-members-data-provider'.identities | Where-Object {$_.subjectKind -eq 'group' -and $_.principalName -eq "[$projectName]\Contributors"}
                            # $contributorObj would be null if none of its permissions are set i.e. all perms are 'Not Set'.
                            if($contributorObj)
                            {
                                $contributorInputbody = "{
                                    'contributionIds': [
                                        'ms.vss-admin-web.security-view-permissions-data-provider'
                                    ],
                                    'dataProviderContext': {
                                        'properties': {
                                            'subjectDescriptor': '$($contributorObj.descriptor)',
                                            'permissionSetId': 'f6a4de49-dbe2-4704-86dc-f8ec1a294436',
                                            'permissionSetToken': '$permissionSetToken',
                                            'accountName': '$(($contributorObj.principalName).Replace('\','\\'))',
                                            'sourcePage': {
                                                'url': '$taskGrpURL',
                                                'routeId':'ms.vss-distributed-task.hub-task-group-edit-route',
                                                'routeValues': {
                                                    'project': '$projectName',
                                                    'taskGroupId': '$taskGrpId',
                                                    'controller':'Apps',
                                                    'action':'ContributedHub',
                                                    'viewname':'task-groups-edit'
                                                }
                                            }
                                        }
                                    }
                                }" | ConvertFrom-Json

                                #Web request to fetch RBAC permissions of Contributors group on task group.
                                $contributorResponseObj = [WebRequestHelper]::InvokePostWebRequest($apiURL,$contributorInputbody);
                                $contributorRBACObj = $contributorResponseObj[0].dataProviders.'ms.vss-admin-web.security-view-permissions-data-provider'.subjectPermissions
                                $editPerms = $contributorRBACObj | Where-Object {$_.displayName -eq 'Edit task group'}
                                #effectivePermissionValue equals to 1 implies edit task group perms is set to 'Allow'. Its value is 3 if it is set to Allow (inherited). This param is not available if it is 'Not Set'.
                                if([Helpers]::CheckMember($editPerms,"effectivePermissionValue") -and (($editPerms.effectivePermissionValue -eq 1) -or ($editPerms.effectivePermissionValue -eq 3)))
                                {
                                    $editableTaskGroups += $_.name
                                }
                            }
                        }
                    }
                    if(($editableTaskGroups | Measure-Object).Count -gt 0)
                    {
                        $controlResult.AddMessage("Total number of task groups on which contributors have edit permissions in release definition: ", ($editableTaskGroups | Measure-Object).Count);
                        $controlResult.AdditionalInfo += "Total number of task groups on which contributors have edit permissions in release definition: " + ($editableTaskGroups | Measure-Object).Count;
                        $controlResult.AddMessage([VerificationResult]::Failed,"Contributors have edit permissions on the below task groups used in release definition: ", $editableTaskGroups);
                        $controlResult.SetStateData("List of task groups used in release definition that contributors can edit: ", $editableTaskGroups);
                    }
                    else
                    {
                        $controlResult.AddMessage([VerificationResult]::Passed,"Contributors do not have edit permissions on any task groups used in release definition.");
                    }
                }
                catch
                {
                    $controlResult.AddMessage([VerificationResult]::Error,"Could not fetch the RBAC details of task groups used in the pipeline.");
                    $controlResult.LogException($_)
                }

            }
            else
            {
                $controlResult.AddMessage([VerificationResult]::Passed,"No task groups found in release definition.");
            }
        }
        return $controlResult;
    }

    hidden [ControlResult] CheckVariableGroupEditPermission([ControlResult] $controlResult)
    {
        $controlResult.VerificationResult = [VerificationResult]::Failed
        $varGrps = @();
        $projectName = $this.ResourceContext.ResourceGroupName
        $editableVarGrps = @();

        #add var groups scoped at release scope.
        $releaseVarGrps = @($this.ReleaseObj[0].variableGroups)
        if($releaseVarGrps.Count -gt 0)
        {
            $varGrps += $releaseVarGrps
        }

        # Each release pipeline has atleast 1 env.
        $envCount = ($this.ReleaseObj[0].environments).Count

        for($i=0; $i -lt $envCount; $i++)
        {
            $environmentVarGrps = @($this.ReleaseObj[0].environments[$i].variableGroups);
            if($environmentVarGrps.Count -gt 0)
            {
                $varGrps += $environmentVarGrps
            }
        }

        if($varGrps.Count -gt 0)
        {
            try
            {
                $varGrps | ForEach-Object{
                    #Fetch the security role assignments for variable group
                    $url = 'https://dev.azure.com/{0}/_apis/securityroles/scopes/distributedtask.variablegroup/roleassignments/resources/{1}%24{2}?api-version=6.1-preview.1' -f $($this.OrganizationContext.OrganizationName), $($this.ProjectId), $($_);
                    $responseObj = @([WebRequestHelper]::InvokeGetWebRequest($url));
                    if($responseObj.Count -gt 0)
                    {
                        #$_.identity.uniqueName.split("\")[-1]
                        $contributorsObj = $responseObj | Where-Object {$_.identity.uniqueName -match "\\Contributors$"}
                        if((-not [string]::IsNullOrEmpty($contributorsObj)) -and ($contributorsObj.role.name -ne 'Reader')){

                            #Release object doesn't capture variable group name. We need to explicitly look up for its name via a separate web request.
                            $varGrpURL = ("https://dev.azure.com/{0}/{1}/_apis/distributedtask/variablegroups?groupIds={2}&api-version=6.1-preview.2") -f $($this.OrganizationContext.OrganizationName), $($this.ProjectId), $($_);
                            $varGrpObj = [WebRequestHelper]::InvokeGetWebRequest($varGrpURL);
                            if ((-not ([Helpers]::CheckMember($varGrpObj[0],"count"))) -and ($varGrpObj.Count -gt 0) -and ([Helpers]::CheckMember($varGrpObj[0],"name"))) {
                                $editableVarGrps += $varGrpObj[0].name
                            }
                        }
                    }
                }

                $editableVarGrpsCount = $editableVarGrps.Count
                if($editableVarGrpsCount -gt 0)
                {
                    $controlResult.AddMessage("`nCount of variable groups on which contributors have edit permissions: $editableVarGrpsCount `n");
                    $controlResult.AdditionalInfo += "`nCount of variable groups on which contributors have edit permissions: $editableVarGrpsCount";
                    $controlResult.AddMessage([VerificationResult]::Failed,"Variable groups list: `n$($editableVarGrps | FT | Out-String)");
                    $controlResult.SetStateData("Variable groups list: ", $editableVarGrps);
                }
                else
                {
                    $controlResult.AddMessage([VerificationResult]::Passed,"`nContributors do not have edit permissions on variable groups used in release definition.");
                }
            }
            catch
            {
                $controlResult.AddMessage([VerificationResult]::Error,"`nCould not fetch the RBAC details of variable groups used in the pipeline.");
                $controlResult.LogException($_)
            }

        }
        else
        {
            $controlResult.AddMessage([VerificationResult]::Passed,"`nNo variable groups found in release definition.");
        }

        return $controlResult
    }
    hidden [ControlResult] CheckBroaderGroupAccess([ControlResult] $controlResult)
    {
        $controlResult.VerificationResult = [VerificationResult]::Failed
        if ([Release]::IsOAuthScan -eq $true)
        {
            $projectName = $this.ResourceContext.ResourceGroupName
            $resource = $this.projectid+ "/" + $this.ReleaseObj.id

            # Filter namespaceobj for current release
            $obj = @([Release]::ReleaseNamespacesObj | where-object {$_.token -eq $resource})

            # If current release object is not found, get project level obj. (Seperate release obj is not available if project level permissions are being used on pipeline)
            if($obj.Count -eq 0)
            {
                $obj = @([Release]::ReleaseNamespacesObj | where-object {$_.token -eq $this.projectid})
            }

            if($obj.Count -gt 0)
            {
                $properties = $obj.acesDictionary | Get-Member -MemberType Properties
                $permissionsInBit =0
                $editPerms= @()

                try
                {
                    #Use descriptors from acl to make identities call, using each descriptor see permissions mapped to Contributors
                    $properties | ForEach-Object{
                        if ($permissionsInBit -eq 0) {
                            $apiUrlIdentity = "https://vssps.dev.azure.com/{0}/_apis/identities?descriptors={1}&api-version=6.0" -f $($this.OrganizationContext.OrganizationName), $($obj.acesDictionary.$($_.Name).descriptor)
                            $responseObj = [WebRequestHelper]::InvokeGetWebRequest($apiUrlIdentity);
                            if ($responseObj.providerDisplayName -eq "[$($projectName)]\Contributors")
                            {
                                $permissionsInBit = $obj.acesDictionary.$($_.Name).extendedInfo.effectiveAllow
                            }
                        }
                    }

                    # ResolvePermissions method returns object if 'Edit release pipeline' is allowed
                    $editPerms = @([Helpers]::ResolvePermissions($permissionsInBit, [Release]::ReleaseNamespacesPermissionObj.actions, 'Edit release pipeline'))

                    if($editPerms.Count -gt 0)
                    {
                        $controlResult.AddMessage([VerificationResult]::Failed,"Contributors have edit permissions on the release pipeline.");
                    }
                    else
                    {
                        $controlResult.AddMessage([VerificationResult]::Passed,"Contributors do not have edit permissions on the release pipeline.");
                    }
                }
                catch
                {
                    $controlResult.AddMessage([VerificationResult]::Error,"Could not fetch RBAC details of the pipeline.");
                    $controlResult.LogException($_)
                }
            }
            else {
                $controlResult.AddMessage([VerificationResult]::Error,"Could not fetch RBAC details of the pipeline.");
            }
        }
        else {
            try
            {
                $orgName = $($this.OrganizationContext.OrganizationName)
                $projectName = $this.ResourceContext.ResourceGroupName
                $releaseId = $this.ReleaseObj.id
                $permissionSetToken = "$($this.projectId)/$releaseId"
                if ([Helpers]::CheckMember($this.ControlSettings.Release, "RestrictedBroaderGroupsForRelease") -and [Helpers]::CheckMember($this.ControlSettings.Release, "ExcessivePermissionsForBroadGroups")) {
                    $broaderGroups = $this.ControlSettings.Release.RestrictedBroaderGroupsForRelease
                    $excessivePermissions = $this.ControlSettings.Release.ExcessivePermissionsForBroadGroups
                    $releaseURL = "https://dev.azure.com/$orgName/$projectName/_release?_a=releases&view=mine&definitionId=$releaseId"

                    $apiURL = "https://dev.azure.com/{0}/_apis/Contribution/HierarchyQuery/project/{1}?api-version=5.0-preview.1" -f $orgName, $($this.projectId)
                    $inputbody = "{
                        'contributionIds': [
                            'ms.vss-admin-web.security-view-members-data-provider'
                        ],
                        'dataProviderContext': {
                            'properties': {
                                'permissionSetId': '$([Release]::SecurityNamespaceId)',
                                'permissionSetToken': '$permissionSetToken',
                                'sourcePage': {
                                    'url': '$releaseURL',
                                    'routeId': 'ms.vss-releaseManagement-web.hub-explorer-3-default-route',
                                    'routeValues': {
                                        'project': '$projectName',
                                        'viewname': 'details',
                                        'controller': 'ContributedPage',
                                        'action': 'Execute'
                                    }
                                }
                            }
                        }
                    }" | ConvertFrom-Json

                    # Web request to fetch the group details for a release definition
                    $responseObj = [WebRequestHelper]::InvokePostWebRequest($apiURL,$inputbody);
                    if([Helpers]::CheckMember($responseObj[0],"dataProviders") -and ($responseObj[0].dataProviders.'ms.vss-admin-web.security-view-members-data-provider') -and ([Helpers]::CheckMember($responseObj[0].dataProviders.'ms.vss-admin-web.security-view-members-data-provider',"identities")))
                    {

                        $broaderGroupsList = @($responseObj[0].dataProviders.'ms.vss-admin-web.security-view-members-data-provider'.identities | Where-Object { $_.subjectKind -eq 'group' -and $broaderGroups -contains $_.displayName })

                        <#
                        #Check if inheritance is disabled on release pipeline, if disabled, inherited permissions should be considered irrespective of control settings
 
                        $apiURLForInheritedPerms = "https://dev.azure.com/{0}/{1}/_admin/_security/index?useApiUrl=true&permissionSet={2}&token={3}%2F{4}&style=min" -f $($this.OrganizationContext.OrganizationName), $($this.ProjectId), $([Release]::SecurityNamespaceId), $($this.ProjectId), $($this.ReleaseObj.id);
                        $header = [WebRequestHelper]::GetAuthHeaderFromUri($apiURLForInheritedPerms);
                        $responseObj = Invoke-RestMethod -Method Get -Uri $apiURLForInheritedPerms -Headers $header -UseBasicParsing
                        $responseObj = ($responseObj.SelectNodes("//script") | Where-Object { $_.class -eq "permissions-context" }).InnerXML | ConvertFrom-Json;
                        if($responseObj -and -not [Helpers]::CheckMember($responseObj,"inheritPermissions"))
                        {
                            $this.excessivePermissionBits = @(1, 3)
                        }
                        #>

                        # $broaderGroupsList would be null if none of its permissions are set i.e. all perms are 'Not Set'.

                        if ($broaderGroupsList.Count -gt 0)
                        {
                            $groupsWithExcessivePermissionsList = @()
                            foreach ($broderGroup in $broaderGroupsList) {
                                $contributorInputbody = "{
                                    'contributionIds': [
                                        'ms.vss-admin-web.security-view-permissions-data-provider'
                                    ],
                                    'dataProviderContext': {
                                        'properties': {
                                            'subjectDescriptor': '$($broderGroup.descriptor)',
                                            'permissionSetId': '$([Release]::SecurityNamespaceId)',
                                            'permissionSetToken': '$permissionSetToken',
                                            'accountName': '$(($broderGroup.principalName).Replace('\','\\'))',
                                            'sourcePage': {
                                                'url': '$releaseURL',
                                                'routeId': 'ms.vss-releaseManagement-web.hub-explorer-3-default-route',
                                                'routeValues': {
                                                    'project': '$projectName',
                                                    'viewname': 'details',
                                                    'controller': 'ContributedPage',
                                                    'action': 'Execute'
                                                }
                                            }
                                        }
                                    }
                                }" | ConvertFrom-Json

                                #Web request to fetch RBAC permissions of Contributors group on release.
                                $broaderGroupResponseObj = [WebRequestHelper]::InvokePostWebRequest($apiURL, $contributorInputbody);
                                $broaderGroupRBACObj = $broaderGroupResponseObj[0].dataProviders.'ms.vss-admin-web.security-view-permissions-data-provider'.subjectPermissions
                                $excessivePermissionList = $broaderGroupRBACObj | Where-Object { $_.displayName -in $excessivePermissions }
                                $excessivePermissionsPerGroup = @()
                                $excessivePermissionList | ForEach-Object {
                                    #effectivePermissionValue equals to 1 implies edit release pipeline perms is set to 'Allow'. Its value is 3 if it is set to Allow (inherited). This param is not available if it is 'Not Set'.
                                    if ([Helpers]::CheckMember($_, "effectivePermissionValue")) {
                                        if ($this.excessivePermissionBits -contains $_.effectivePermissionValue) {
                                            $excessivePermissionsPerGroup += $_
                                        }
                                    }
                                }
                                if ($excessivePermissionsPerGroup.Count -gt 0) {
                                    $excessivePermissionsGroupObj = @{}
                                    $excessivePermissionsGroupObj['Group'] = $broderGroup.principalName
                                    $excessivePermissionsGroupObj['ExcessivePermissions'] = $($excessivePermissionsPerGroup.displayName -join ', ')
                                    $groupsWithExcessivePermissionsList += $excessivePermissionsGroupObj
                                }
                            }
                            if ($groupsWithExcessivePermissionsList.count -gt 0) {
                                $controlResult.AddMessage([VerificationResult]::Failed, "Broader groups have excessive permissions on the release pipeline.");
                                $formattedGroupsData = $groupsWithExcessivePermissionsList | Select @{l = 'Group'; e = { $_.Group } }, @{l = 'ExcessivePermissions'; e = { $_.ExcessivePermissions } }
                                $formattedBroaderGrpTable = ($formattedGroupsData | Out-String)
                                $controlResult.AddMessage("`nList of groups : `n$formattedBroaderGrpTable");
                                $controlResult.AdditionalInfo += "List of excessive permissions on which broader groups have access: $($groupsWithExcessivePermissionsList.Group).";
                            }
                            else {
                                $controlResult.AddMessage([VerificationResult]::Passed, "Broader Groups do not have excessive permissions on the release pipeline.");
                            }
                        }
                        else
                        {
                            $controlResult.AddMessage([VerificationResult]::Passed,"Broader groups do not have access to the release pipeline.");
                        }
                    }
                    else
                    {
                        $controlResult.AddMessage([VerificationResult]::Error,"Could not fetch RBAC details of the pipeline.");
                    }
                    $controlResult.AddMessage("`nNote:`nFollowing groups are considered 'broad groups':`n$($broaderGroups | FT | Out-String)");
                    $controlResult.AddMessage("Following permissions are considered 'excessive':`n$($excessivePermissions | FT | Out-String)");
                }
                else {
                    $controlResult.AddMessage([VerificationResult]::Error, "Broader groups or excessive permissions are not defined in control settings for your organization.");
                }
            }
            catch
            {
                $controlResult.AddMessage([VerificationResult]::Error,"Could not fetch RBAC details of the pipeline.");
                $controlResult.LogException($_)
            }
        }

        return $controlResult;
    }

    hidden CheckActiveReleases()
    {
        try
        {
            if ([Release]::IsOAuthScan -eq $true)
            {
                if($this.ReleaseObj)
                {
                    if([Helpers]::CheckMember($this.ReleaseObj ,"lastrelease"))
                    {
                        $recentReleases = @()
                        $release = $this.ReleaseObj.lastrelease
                        $this.releaseActivityDetail.releaseCreationDate = [datetime]::Parse($this.ReleaseObj.createdOn);

                        if([datetime]::Parse( $release.createdOn) -gt (Get-Date).AddDays(-$($this.ControlSettings.Release.ReleaseHistoryPeriodInDays)))
                        {
                            $recentReleases = $release
                        }

                        if(($recentReleases | Measure-Object).Count -gt 0 )
                        {
                            $this.releaseActivityDetail.isReleaseActive = $true;
                            $this.releaseActivityDetail.message = "Found recent releases triggered within $($this.ControlSettings.Release.ReleaseHistoryPeriodInDays) days";
                            $latestReleaseTriggerDate = [datetime]::Parse($recentReleases.createdOn);
                            $this.releaseActivityDetail.latestReleaseTriggerDate = $latestReleaseTriggerDate;

                        }
                        else
                        {
                            $this.releaseActivityDetail.isReleaseActive = $false;
                            $this.releaseActivityDetail.message = "No recent release history found in last $($this.ControlSettings.Release.ReleaseHistoryPeriodInDays) days";
                        }
                        $latestReleaseTriggerDate = [datetime]::Parse($release.createdOn);
                        $this.releaseActivityDetail.latestReleaseTriggerDate = $latestReleaseTriggerDate;
                    }
                    else
                    {
                        $this.releaseActivityDetail.isReleaseActive = $false;
                        $this.releaseActivityDetail.message = "No release history found. Release is inactive.";
                        [datetime] $createdDate = $this.ReleaseObj.createdOn
                        $this.releaseActivityDetail.releaseCreationDate = $createdDate
                    }

                    $responseObj = $null;
                }
            }
            else {
                if($this.ReleaseObj)
                {
                    $apiURL = "https://dev.azure.com/{0}/_apis/Contribution/HierarchyQuery/project/{1}?api-version=5.0-preview.1" -f $($this.OrganizationContext.OrganizationName),$this.ProjectId;
                    $inputbody =  "{
                        'contributionIds': [
                            'ms.vss-releaseManagement-web.releases-list-data-provider'
                        ],
                        'dataProviderContext': {
                            'properties': {
                                'definitionIds': '$($this.ReleaseObj.id)',
                                'definitionId': '$($this.ReleaseObj.id)',
                                'fetchAllReleases': true,
                                'sourcePage': {
                                    'url': 'https://dev.azure.com/$($this.OrganizationContext.OrganizationName)/$($this.ResourceContext.ResourceGroupName)/_release?_a=releases&view=mine&definitionId=$($this.ReleaseObj.id)',
                                    'routeId': 'ms.vss-releaseManagement-web.hub-explorer-3-default-route',
                                    'routeValues': {
                                        'project': '$($this.ResourceContext.ResourceGroupName)',
                                        'viewname': 'hub-explorer-3-view',
                                        'controller': 'ContributedPage',
                                        'action': 'Execute'
                                    }
                                }
                            }
                        }
                    }"  | ConvertFrom-Json

                $responseObj = [WebRequestHelper]::InvokePostWebRequest($apiURL,$inputbody);

                if([Helpers]::CheckMember($responseObj,"dataProviders") -and ($responseObj.dataProviders | Get-Member 'ms.vss-releaseManagement-web.releases-list-data-provider') -and [Helpers]::CheckMember($responseObj.dataProviders.'ms.vss-releaseManagement-web.releases-list-data-provider', 'releases'))
                {

                    $releases = $responseObj.dataProviders.'ms.vss-releaseManagement-web.releases-list-data-provider'.releases

                    if(($releases | Measure-Object).Count -gt 0 )
                    {
                        $recentReleases = @()
                        $releases | ForEach-Object {
                            if([datetime]::Parse( $_.createdOn) -gt (Get-Date).AddDays(-$($this.ControlSettings.Release.ReleaseHistoryPeriodInDays)))
                            {
                                $recentReleases+=$_
                            }
                        }

                        if(($recentReleases | Measure-Object).Count -gt 0 )
                        {
                            $this.releaseActivityDetail.isReleaseActive = $true;
                            $this.releaseActivityDetail.message = "Found recent releases triggered within $($this.ControlSettings.Release.ReleaseHistoryPeriodInDays) days";
                        }
                        else
                        {
                            $this.releaseActivityDetail.isReleaseActive = $false;
                            $this.releaseActivityDetail.message = "No recent release history found in last $($this.ControlSettings.Release.ReleaseHistoryPeriodInDays) days";
                        }
                        $latestReleaseTriggerDate = [datetime]::Parse($releases[0].createdOn);
                        $this.releaseActivityDetail.latestReleaseTriggerDate = $latestReleaseTriggerDate;
                    }
                    else
                    {
                        # no release history ever.
                        $this.releaseActivityDetail.isReleaseActive = $false;
                        [datetime] $createdDate = $this.ReleaseObj.createdOn
                        $this.releaseActivityDetail.releaseCreationDate = $createdDate
                        $this.releaseActivityDetail.message = "No release history found.";
                    }

                }
                else
                {
                    $this.releaseActivityDetail.isReleaseActive = $false;
                    $this.releaseActivityDetail.message = "No release history found. Release is inactive.";
                }

                $responseObj = $null;
                }
            }
        }
        catch
        {
            $this.releaseActivityDetail.message = "Could not fetch release details.";
            $this.releaseActivityDetail.errorObject = $_
        }
        $this.releaseActivityDetail.isComputed = $true
    }
}

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