public/Get-VPASSpecificAuthenticationMethod.ps1

<#
.Synopsis
   GET SPECIFIC AUTHENTICATION METHOD
   CREATED BY: Vadim Melamed, EMAIL: vmelamed5@gmail.com
.DESCRIPTION
   USE THIS FUNCTION TO GET SPECIFIC AUTHENTICATION METHOD INTO CYBERARK
.PARAMETER token
   HashTable of data containing various pieces of login information (PVWA, LoginToken, HeaderType, etc).
   If -token is not passed, function will use last known hashtable generated by New-VPASToken
.PARAMETER AuthMethodSearch
   Search string to find the target AuthenticationMethod
.PARAMETER AuthMethodID
   Unique ID that maps to the target AuthenticationMethod
   Supply AuthMethodID to skip any querying for target AuthenticationMethod
.EXAMPLE
   $AuthenticationMethodJSON = Get-VPASSpecificAuthenticationMethod -AuthMethodSearch {SEARCH QUERY VALUE}
.EXAMPLE
   $AuthenticationMethodJSON = Get-VPASSpecificAuthenticationMethod -AuthMethodID {AUTH METHOD ID VALUE}
.OUTPUTS
   JSON Object (AuthenticationMethod) if successful
   $false if failed
#>

function Get-VPASSpecificAuthenticationMethod{
    [OutputType('System.Object',[bool])]
    [CmdletBinding()]
    Param(

        [Parameter(Mandatory=$false,ValueFromPipelineByPropertyName=$true,Position=0)]
        [String]$AuthMethodSearch,

        [Parameter(Mandatory=$false,ValueFromPipelineByPropertyName=$true,Position=1)]
        [String]$AuthMethodID,

        [Parameter(Mandatory=$false,ValueFromPipelineByPropertyName=$true,Position=2)]
        [hashtable]$token
    )

    Begin{
        $tokenval,$sessionval,$PVWA,$Header,$ISPSS,$IdentityURL,$EnableTextRecorder,$AuditTimeStamp,$NoSSL,$VaultVersion,$HideWarnings,$AuthenticatedAs,$SubDomain = Get-VPASSession -token $token
        $CommandName = $MyInvocation.MyCommand.Name
        $log = Write-VPASTextRecorder -inputval $CommandName -token $token -LogType COMMAND
    }
    Process{
        Write-Verbose "SUCCESSFULLY PARSED PVWA VALUE"
        Write-Verbose "SUCCESSFULLY PARSED TOKEN VALUE"

        try{

            if([String]::IsNullOrEmpty($AuthMethodID)){
                Write-Verbose "NO AUTH METHOD ID PROVIDED...INVOKING HELPER FUNCTION TO RETRIEVE UNIQUE AUTH METHOD ID BASED ON SPECIFIED PARAMETERS"
                $AuthMethodID = Get-VPASAuthenticationMethodIDHelper -token $token -AuthenticationMethodSearch $AuthMethodSearch
                Write-Verbose "RETURNING AUTH METHOD ID"
            }
            else{
                Write-Verbose "AUTH METHOD ID SUPPLIED, SKIPPING HELPER FUNCTION"
            }


            if($NoSSL){
                Write-Verbose "NO SSL ENABLED, USING HTTP INSTEAD OF HTTPS"
                $uri = "http://$PVWA/passwordvault/api/Configuration/AuthenticationMethods/$AuthMethodID/"
            }
            else{
                Write-Verbose "SSL ENABLED BY DEFAULT, USING HTTPS"
                $uri = "https://$PVWA/passwordvault/api/Configuration/AuthenticationMethods/$AuthMethodID/"
            }
            $log = Write-VPASTextRecorder -inputval $uri -token $token -LogType URI
            $log = Write-VPASTextRecorder -inputval "GET" -token $token -LogType METHOD

            write-verbose "MAKING API CALL TO CYBERARK"

            if($sessionval){
                $response = Invoke-RestMethod -Headers @{"Authorization"=$Header} -Uri $uri -Method GET -ContentType "application/json" -WebSession $sessionval
            }
            else{
                $response = Invoke-RestMethod -Headers @{"Authorization"=$Header} -Uri $uri -Method GET -ContentType "application/json"
            }
            $outputlog = $response
            $log = Write-VPASTextRecorder -inputval $outputlog -token $token -LogType RETURN

            Write-Verbose "RETURNING JSON OBJECT"
            return $response
        }catch{
            $log = Write-VPASTextRecorder -inputval $_ -token $token -LogType ERROR
            $log = Write-VPASTextRecorder -inputval "REST API COMMAND RETURNED: FALSE" -token $token -LogType MISC
            Write-Verbose "UNABLE TO GET AUTHENTICATION METHODS"
            Write-VPASOutput -str $_ -type E
            return $false
        }
    }
    End{
        $log = Write-VPASTextRecorder -inputval $CommandName -token $token -LogType DIVIDER
    }
}