Get endpoint by MAC

//native

/**

 * Get endpoint by MAC

 * Get one endpoint by its MAC address (ISE uses the MAC as the endpoint name). Any separator or case is accepted, e.g. 11:22:33:44:55:66, 11-22-33-44-55-66 or 1122.3344.5566.

 */

export async function main(auth: RT.CiscoIse, mac: string) {

  // ISE stores MACs as AA:BB:CC:DD:EE:FF

  const hex = mac.replace(/[-:.\s]/g, "").toUpperCase()

  if (!/^[0-9A-F]{12}$/.test(hex))

    throw new Error(`Invalid MAC address: ${mac}`)

  const macAddress = hex.match(/../g)!.join(":")

  const base = new URL(auth.base_url)

  if (auth.ers_port) base.port = String(auth.ers_port)

  const url = new URL(

    `/ers/config/endpoint/name/${encodeURIComponent(macAddress)}`,

    base

  )

  const response = await fetch(url, {

    headers: {

      Authorization: `Basic ${btoa(`${auth.username}:${auth.password}`)}`,

      Accept: "application/json",

    },

  })

  if (!response.ok) {

    throw new Error(`${response.status} ${await response.text()}`)

  }

  return await response.json()

}