request the emarsys api together with Escher Authentication

request_emarsys_api.ps1

# change this for the emarsys request


$username = "username001"
$secret = "secret"
$url = "https://trunk-int.s.emarsys.com/api/v2/field/translate/de"
#$url = "https://trunk-int.s.emarsys.com/api/v2/settings"



# authentication

<#

example for header

X-WSSE: UsernameToken
Username="customer001",
PasswordDigest="ZmI2ZmQ0MDIxYmQwNjcxNDkxY2RjNDNiMWExNjFkZA==",
Nonce="d36e316282959a9ed4c89851497a717f",
Created="2014-03-20T12:51:45Z"

source: https://dev.emarsys.com/v2/before-you-start/authentication
api endpoints: https://trunk-int.s.emarsys.com/api-demo/#tab-customer

other urls
https://dev.emarsys.com/v2/emarsys-developer-hub/what-is-the-emarsys-api
#>



# FUNCTIONS

function getRandomString([int] $length) {
    $random = [Random]::new()
    $chars = @("0", "2", "3", "4", "5", "6", "8", "9", "a", "b", "c", "d", "e", "f", "g", "h", "j", "k", "m", "n", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z")
    $stringBuilder = ""
    for ($i = 0; $i -lt $length; $i++) {
        $stringBuilder += $chars[$random.Next($chars.Length)]
    }
    return $stringBuilder
}

# transform bytes into hexadecimal string (e.g. for hash values)
function getStringFromByte($byteArray) {

    $stringBuilder = ""
    $byteArray | ForEach { $stringBuilder += $_.ToString("x2") }
    return $stringBuilder

}


function getSHA1($data) {
    
    $hash = [System.Security.Cryptography.SHA1CryptoServiceProvider]::new()    
    return getStringFromByte -byteArray $hash.ComputeHash([System.Text.Encoding]::UTF8.GetBytes($data))

}


# CREATE AUTH HEADER


$nonce = getStringfromByte(( GetRandomString -length 16 | Format-Hex ).Bytes)
$date = [datetime]::UtcNow.ToString("o")

$stringToSign = $nonce + $date + $secret
$sha1 = getSHA1 -data $stringToSign
$passwordDigest = [System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($sha1))
$xwsse = "UsernameToken Username=""$( $username )"", PasswordDigest=""$( $passwordDigest )"", Nonce=""$( $nonce )"", Created=""$( $date )""" #  Content-type: application/json;charset=""utf-8"""

$xwsse



# CREATE REQUEST

$header = @{ "X-WSSE"=$xwsse; "Content-Type"="application/json" }


# EXECUTE AND SHOW REQUEST

$res = Invoke-RestMethod -uri $url -Method Get -Headers $header -Verbose

$res.data | Out-GridView