cloud_verifier_common.py 文件源码

def get_query_tag_value(path, query_tag):
    """This is a utility method to query for specific the http parameters in the uri.  

    Returns the value of the parameter, or None if not found."""  
    data = { }
    parsed_path = urlparse(path)
    query_tokens = parsed_path.query.split('&')
    # find the 'ids' query, there can only be one
    for tok in query_tokens:
        query_tok = tok.split('=')
        query_key = query_tok[0]
        if query_key is not None and query_key == query_tag:
            # ids tag contains a comma delimited list of ids
            data[query_tag] = query_tok[1]    
            break        
    return data.get(query_tag,None) 

# sign a message with revocation key.  telling of verification problem