rdata.py 文件源码

def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
        token = tok.get()
        if not token.is_identifier() or token.value != '\#':
            raise dns.exception.SyntaxError(
                r'generic rdata does not start with \#')
        length = tok.get_int()
        chunks = []
        while 1:
            token = tok.get()
            if token.is_eol_or_eof():
                break
            chunks.append(token.value.encode())
        hex = b''.join(chunks)
        data = binascii.unhexlify(hex)
        if len(data) != length:
            raise dns.exception.SyntaxError(
                'generic rdata hex data has wrong length')
        return cls(rdclass, rdtype, data)