from flask import jsonify
from hashlib import sha256

def is_valid_param(param):
    if None == param or ("" == str(param).strip()):
        return False
    return True

def show_error(msg):
    response = {'code':-1, 'msg':msg, 'data':[]}
    return jsonify(response)

def encode_flag(scope, path, funcname):
    string = "{} {} {}".format(scope, path, funcname)
    x = sha256()
    x.update(string.encode())
    hexstr = x.hexdigest()
    return hexstr[0:26]