AzSK.ADO

1.12.0

Framework/Helpers/ControlHelper.ps1

                                # This class should contains method that would be required to filter/targer controls

class ControlHelper: EventBase{

    static [psobject] $ControlFixBackup = @()

    static $GroupMembersResolutionObj = @{} #Caching group resolution

    static $ResolvedBroaderGroups = @{} # Caching expanded broader groups

    static $GroupsWithNumerousMembers = @() # Groups which contains very large groups

    static $VeryLargeGroups = @() # Very large groups (fetched from controlsettings)

    static $IsGroupDetailsFetchedFromPolicy = $false

    static $AllowedMemberCountPerBroadGroup = @() # Allowed member count (fetched from controlsettings)

    static $GroupsToExpand = @() # Groups for which meber counts need to check (fetched from controlsettings)

    static $GroupsWithDescriptor = @{} # All broder groups with descriptors

    static [string] $parentGroup = $null #used to store current broader group

    #Checks if the severities passed by user are valid and filter out invalid ones

   hidden static [string []] CheckValidSeverities([string []] $ParamSeverities)

   {

       $ValidSeverities = @();        

       $ValidSeverityValues = @();    

       $InvalidSeverities = @();        

       $ControlSettings = [ConfigurationManager]::LoadServerConfigFile("ControlSettings.json");

       if([Helpers]::CheckMember($ControlSettings, 'ControlSeverity'))

       {

                   $severityMapping = $ControlSettings.ControlSeverity

                   #Discard the severity values passed in parameter that do not have mapping in Org settings.

                   foreach($sev in $severityMapping.psobject.properties)

                   {                         

                       $ValidSeverities +=  $sev.value       

                   }

                   $ValidSeverityValues += $ParamSeverities | Where-Object { $_ -in $ValidSeverities}

                   $InvalidSeverities += $ParamSeverities | Where-Object { $_ -notin $ValidSeverities }        

       }

       else 

       {

           $ValidEnumSeverities = [Enum]::GetNames('ControlSeverity')

           $ValidSeverityValues += $ParamSeverities | Where-Object { $_ -in $ValidEnumSeverities}

           $InvalidSeverities += $ParamSeverities | Where-Object { $_ -notin $ValidEnumSeverities }    

       }

       if($InvalidSeverities)

       {

          [EventBase]:: PublishGenericCustomMessage("WARNING: No control severity corresponds to `"$($InvalidSeverities -join ', ')`" for your org.",[MessageType]::Warning)

       }

       return $ValidSeverityValues

   }

    static [object] GetIdentitiesFromAADGroup([string] $OrgName, [String] $EntityId, [String] $groupName)

    {

        $members = @()

        $AllUsers = @()

        $rmContext = [ContextHelper]::GetCurrentContext();

        $user = "";

        $base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f $user, $rmContext.AccessToken)))

        try {

            $apiUrl = 'https://dev.azure.com/{0}/_apis/IdentityPicker/Identities/{1}/connections?identityTypes=user&identityTypes=group&operationScopes=ims&operationScopes=source&connectionTypes=successors&depth=1&properties=DisplayName&properties=SubjectDescriptor&properties=SignInAddress' -f $($OrgName), $($EntityId)

            $responseObj = @(Invoke-RestMethod -Method Get -Uri $apiURL -Headers @{Authorization = ("Basic {0}" -f $base64AuthInfo) } -UseBasicParsing)

            # successors property will not be available if there are no users added to group.

            if ([Helpers]::CheckMember($responseObj[0], "successors")) {

                $members = @($responseObj.successors | Select-Object originId, displayName, @{Name = "subjectKind"; Expression = { $_.entityType } }, @{Name = "mailAddress"; Expression = { $_.signInAddress } }, @{Name = "descriptor"; Expression = { $_.subjectDescriptor } }, @{Name = "groupName"; Expression = { $groupName } })

            }

            $members | ForEach-Object {

                if ($_.subjectKind -eq 'User') {

                    $AllUsers += $_

                }

            }

            return $AllUsers

        }

        catch {

            Write-Host $_

            return $AllUsers

        }

    }

    static [void] ResolveNestedGroupMembers([string]$descriptor,[string] $orgName,[string] $projName){

        [ControlHelper]::groupMembersResolutionObj[$descriptor] = @()

        $url="https://dev.azure.com/{0}/_apis/Contribution/HierarchyQuery?api-version=5.1-preview" -f $($orgName);

        if ([string]::IsNullOrEmpty($projName)){

            $postbody=@'

            {"contributionIds":["ms.vss-admin-web.org-admin-members-data-provider"],"dataProviderContext":{"properties":{"subjectDescriptor":"{0}","sourcePage":{"url":"https://dev.azure.com/{2}/_settings/groups?subjectDescriptor={1}","routeId":"ms.vss-admin-web.collection-admin-hub-route","routeValues":{"adminPivot":"groups","controller":"ContributedPage","action":"Execute"}}}}}

'@

            $postbody=$postbody.Replace("{0}",$descriptor)

            $postbody=$postbody.Replace("{1}",$orgName)

        }

        else {

            $postbody=@'

            {"contributionIds":["ms.vss-admin-web.org-admin-members-data-provider"],"dataProviderContext":{"properties":{"subjectDescriptor":"{0}","sourcePage":{"url":"https://dev.azure.com/{1}/{2}/_settings/permissions?subjectDescriptor={0}","routeId":"ms.vss-admin-web.collection-admin-hub-route","routeValues":{"adminPivot":"groups","controller":"ContributedPage","action":"Execute"}}}}}

'@

            $postbody=$postbody.Replace("{0}",$descriptor)

            $postbody=$postbody.Replace("{1}",$orgName)

            $postbody=$postbody.Replace("{2}",$projName)

        }

        $rmContext = [ContextHelper]::GetCurrentContext();

        $user = "";

        $base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f $user,$rmContext.AccessToken)))

        try

        {

            $response = Invoke-RestMethod -Uri $url -Method Post -ContentType "application/json" -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)} -Body $postbody

            if([Helpers]::CheckMember($response.dataProviders.'ms.vss-admin-web.org-admin-members-data-provider', "identities"))

            {

                $data=$response.dataProviders.'ms.vss-admin-web.org-admin-members-data-provider'.identities

                $data | ForEach-Object{

                    if($_.subjectKind -eq "group")

                    {

                        if ([string]::IsNullOrWhiteSpace($_.descriptor) -and (-not [string]::IsNullOrWhiteSpace($_.entityId)))

                        {

                            $identities = @([ControlHelper]::GetIdentitiesFromAADGroup($orgName, $_.entityId, $_.displayName))

                            if ($identities.Count -gt 0)

                            {

                                [ControlHelper]::groupMembersResolutionObj[$descriptor] += $identities

                            }

                        }

                        else

                        {

                           [ControlHelper]::ResolveNestedGroupMembers($_.descriptor,$orgName,$projName)

                           [ControlHelper]::groupMembersResolutionObj[$descriptor] += [ControlHelper]::groupMembersResolutionObj[$_.descriptor]

                        }

                    }

                    else

                    {

                        [ControlHelper]::groupMembersResolutionObj[$descriptor] += $_

                    }

                }

            }

        }

        catch {

            Write-Host $_

        }

    }

    static [void] FindGroupMembers([string]$descriptor,[string] $orgName,[string] $projName){

        if (-not [ControlHelper]::GroupMembersResolutionObj.ContainsKey("OrgName")) {

            [ControlHelper]::GroupMembersResolutionObj["OrgName"] = $orgName

        }

        [ControlHelper]::ResolveNestedGroupMembers($descriptor, $orgName, $projName)

    }

    static [PSObject] ResolveNestedBroaderGroupMembers([PSObject]$groupObj,[string] $orgName,[string] $projName)

    {

        $groupPrincipalName = $groupObj.principalName

        $members = @()

        if ([ControlHelper]::ResolvedBroaderGroups.ContainsKey($groupPrincipalName))

        {

            $members += [ControlHelper]::ResolvedBroaderGroups[$_.principalName];

            return $members

        }

        else

        {

            [ControlHelper]::ResolvedBroaderGroups[$groupPrincipalName] = @()

            $rmContext = [ContextHelper]::GetCurrentContext();

            $user = "";

            $base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f $user,$rmContext.AccessToken)))

            $memberslist = @()

            if ([string]::IsNullOrWhiteSpace($groupObj.descriptor) -and (-not [string]::IsNullOrWhiteSpace($groupObj.entityId)))

            {

                $apiUrl = 'https://dev.azure.com/{0}/_apis/IdentityPicker/Identities/{1}/connections?identityTypes=user&identityTypes=group&operationScopes=ims&operationScopes=source&connectionTypes=successors&depth=1&properties=DisplayName&properties=SubjectDescriptor&properties=SignInAddress' -f $($OrgName), $($groupObj.entityId)

                $responseObj = @(Invoke-RestMethod -Method Get -Uri $apiURL -Headers @{Authorization = ("Basic {0}" -f $base64AuthInfo) } -UseBasicParsing)

                # successors property will not be available if there are no users added to group.

                if ([Helpers]::CheckMember($responseObj[0], "successors")) {

                    $memberslist = @($responseObj.successors | Select-Object entityId, originId, descriptor, @{Name = "principalName"; Expression = { $_.displayName } }, @{Name = "mailAddress"; Expression = { $_.signInAddress } }, @{Name = "subjectKind"; Expression = { $_.entityType } })

                }

                $members += [ControlHelper]::NestedGroupResolverHelper($memberslist)

            }

            else

            {

                $descriptor = $groupObj.descriptor

                $url="https://dev.azure.com/{0}/_apis/Contribution/HierarchyQuery?api-version=5.1-preview" -f $($orgName);

                $postbody=@'

                {"contributionIds":["ms.vss-admin-web.org-admin-members-data-provider"],"dataProviderContext":{"properties":{"subjectDescriptor":"{0}","sourcePage":{"url":"https://dev.azure.com/{1}/{2}/_settings/permissions?subjectDescriptor={0}","routeId":"ms.vss-admin-web.collection-admin-hub-route","routeValues":{"adminPivot":"groups","controller":"ContributedPage","action":"Execute"}}}}}

'@

                $postbody=$postbody.Replace("{0}",$descriptor)

                $postbody=$postbody.Replace("{1}",$orgName)

                $postbody=$postbody.Replace("{2}",$projName)

                $response = Invoke-RestMethod -Uri $url -Method Post -ContentType "application/json" -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)} -Body $postbody

                if([Helpers]::CheckMember($response.dataProviders.'ms.vss-admin-web.org-admin-members-data-provider', "identities"))

                {

                    $memberslist = @($response.dataProviders.'ms.vss-admin-web.org-admin-members-data-provider'.identities)

                }

                $members += [ControlHelper]::NestedGroupResolverHelper($memberslist)

            }

            [ControlHelper]::ResolvedBroaderGroups[$groupPrincipalName] = $members

            return $members

        }

    }

    static [PSObject] NestedGroupResolverHelper($memberslist)

    {

        $members = @()

        if ($memberslist.Count -gt 0) 

        {

            $memberslist | ForEach-Object {

                if($_.subjectKind -eq "Group")

                {

                    if ([ControlHelper]::VeryLargeGroups -contains $_.principalName) {

                        [ControlHelper]::GroupsWithNumerousMembers += [ControlHelper]::parentGroup

                    }

                    else

                    {

                        $members += [ControlHelper]::ResolveNestedBroaderGroupMembers($_, $orgName, $projName)

                        Write-Host "Group: [$($_.principalName)]; MemberCount: $([ControlHelper]::ResolvedBroaderGroups[$_.principalName].Count)" -ForegroundColor Cyan

                    }

                }

                else

                {

                    $members += $_

                }

            }

        }

        return $members

    }

    static [PSObject] GetBroaderGroupDescriptorObj([string] $OrgName,[string] $groupName)

    {

        $groupObj = @()

        $projName = $groupName.Split("\")[0] -replace '[\[\]]'

        $rmContext = [ContextHelper]::GetCurrentContext();

        $user = "";

        $base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f $user,$rmContext.AccessToken)))

        $url= "https://dev.azure.com/{0}/_apis/Contribution/HierarchyQuery?api-version=5.1-preview.1" -f $($OrgName);

        if ($projName -eq $OrgName) {

            $body=@'

            {"contributionIds":["ms.vss-admin-web.org-admin-groups-data-provider"],"dataProviderContext":{"properties":{"sourcePage":{"url":"https://dev.azure.com/{0}/_settings/groups","routeId":"ms.vss-admin-web.collection-admin-hub-route","routeValues":{"adminPivot":"groups","controller":"ContributedPage","action":"Execute"}}}}}

'@

            $body=$body.Replace("{0}",$OrgName)

        }

        else {

            $body=@'

            {"contributionIds":["ms.vss-admin-web.org-admin-groups-data-provider"],"dataProviderContext":{"properties":{"sourcePage":{"url":"https://dev.azure.com/{0}/{1}/_settings/permissions","routeId":"ms.vss-admin-web.project-admin-hub-route","routeValues":{"project":"{1}","adminPivot":"permissions","controller":"ContributedPage","action":"Execute"}}}}}

'@

            $body=$body.Replace("{0}",$OrgName)

            $body=$body.Replace("{1}",$projName)

        }

        try{

            $responseObj = Invoke-RestMethod -Uri $url -Method Post -ContentType "application/json" -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)} -Body $body

            $groupObj = $responseObj.dataProviders.'ms.vss-admin-web.org-admin-groups-data-provider'.identities | Where-Object {$_.principalName -eq $groupName}

        }

        catch {

            Write-Host $_

        }

        return $groupObj

    }

    hidden static FetchControlSettingDetails()

    {

        $ControlSettingsObj = [ConfigurationManager]::LoadServerConfigFile("ControlSettings.json");

        [ControlHelper]::VeryLargeGroups = @($ControlSettingsObj.VeryLargeGroups)

        [ControlHelper]::AllowedMemberCountPerBroadGroup = @($ControlSettingsObj.AllowedMemberCountPerBroadGroup)

        [ControlHelper]::GroupsToExpand = @($ControlSettingsObj.BroaderGroupsToExpand)

        [ControlHelper]::IsGroupDetailsFetchedFromPolicy = $true

    }

    static [PSObject] FilterBroadGroupMembers([PSObject] $groupList, [bool] $fetchDescriptor)

    {

        $broaderGroupsWithExcessiveMembers = @()

        if ([ControlHelper]::IsGroupDetailsFetchedFromPolicy -eq $false) {

            [ControlHelper]::FetchControlSettingDetails()

        }

        $groupList | Foreach-Object {

            # In some cases, group object doesn't contains descriptor key which requires to expand the groups.

            if ($fetchDescriptor) {

                $groupName = $_.Name.split('\')[-1]

            }

            else {

                $groupName = $_.principalName.split('\')[-1]

            }

            if ([ControlHelper]::GroupsToExpand -contains $groupName) 

            {

                if ($fetchDescriptor) {

                    if (-not ([ControlHelper]::GroupsWithDescriptor.keys -contains $_.Name)) {

                        [ControlHelper]::GroupsWithDescriptor[$_.Name] += [ControlHelper]::GetBroaderGroupDescriptorObj($this.OrganizationContext.OrganizationName, $_.Name)

                    }

                    $groupObj = [ControlHelper]::GroupsWithDescriptor[$_.Name]

                }

                else {

                    $groupObj = $_

                }

                [ControlHelper]::parentGroup = $groupObj.principalName

                #Checking if group is prenet in the dictionary, if not then expand it, else fetch from dictionary

                if ([ControlHelper]::GroupMembersResolutionObj.ContainsKey($groupObj.descriptor)) {

                    $groupMembers = @([ControlHelper]::GroupMembersResolutionObj[$groupObj.descriptor])

                }

                elseif (-not [ControlHelper]::ResolvedBroaderGroups.ContainsKey($groupObj.principalName)) {

                    $groupMembers = @([ControlHelper]::ResolveNestedBroaderGroupMembers($groupObj, $this.OrganizationContext.OrganizationName, $this.ResourceContext.ResourceGroupName))

                }

                else {

                    $groupMembers = @([ControlHelper]::ResolvedBroaderGroups[$groupObj.principalName])

                }

                $groupMembersCount = @($groupMembers | Select-Object -property mailAddress -Unique).Count

                # Checking the allowed member count for broader group

                # Fail only if member count is greater then allowed limit.

                if ([Helpers]::CheckMember([ControlHelper]::AllowedMemberCountPerBroadGroup, $groupName))

                {

                    $allowedMemberCount = [ControlHelper]::AllowedMemberCountPerBroadGroup.$groupName

                    if (($groupMembersCount -gt $allowedMemberCount) -or ([ControlHelper]::GroupsWithNumerousMembers -contains $groupObj.principalName))

                    {

                        $broaderGroupsWithExcessiveMembers += $groupObj.principalName

                    }

                }

                else {

                    $broaderGroupsWithExcessiveMembers += $groupObj.principalName

                }

            }

            else

            {

                if ($fetchDescriptor) {

                    $broaderGroupsWithExcessiveMembers += $_.Name

                }

                else {

                    $broaderGroupsWithExcessiveMembers += $_.principalName

                }

            }

        }

        return $broaderGroupsWithExcessiveMembers

    } 

}

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