Function parseIdToken

packages/arctic/src/auth/codex.ts:161–191

(idToken: string)

  }

  function parseIdToken(idToken: string): IdTokenInfo | null {
    try {
      const parts = idToken.split(".")
      if (parts.length !== 3) {
        return null
      }
      const [, payloadB64] = parts

      let base64 = payloadB64.replace(/-/g, "+").replace(/_/g, "/")
      while (base64.length % 4) {
        base64 += "="
      }

      let payloadBytes: string
      if (typeof atob !== "undefined") {
        payloadBytes = atob(base64)
      } else {
        payloadBytes = Buffer.from(base64, "base64").toString("utf-8")
      }

      const payload = JSON.parse(payloadBytes)
      const authClaims = payload["https://api.openai.com/auth"]
      return {
        email: payload.email,
        chatgpt_plan_type: authClaims?.chatgpt_plan_type,
        chatgpt_account_id: authClaims?.chatgpt_account_id,
      }
    } catch {
      return null
    }
  }

  export async function requestUserCode(): Promise<DeviceCodeResponse> {
    const response = await fetch(`${issuerPath("/api/accounts/deviceauth/usercode")}`, {