routing.py 文件源码

def getRedirectTarget():
    """ Extracts the Next target and checks its safety.

    Note:
        Extracts the input from flask.request

    Returns:
        str: URL if the target is safe.

    """
    for target in request.values.get('next'), request.referrer:
        if not target:
            continue
        if isSafeUrl(target):
            return target

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