68 lines
2.0 KiB
Python
68 lines
2.0 KiB
Python
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# DTLS exceptions. Written by Ray Brown
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"""DTLS Errors
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This module defines error functionality and exception types for the dtls
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package.
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Classes:
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SSLError -- exception raised for I/O errors
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InvalidSocketError -- exception raised for improper socket objects
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"""
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from socket import error as socket_error
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SSL_ERROR_NONE = 0
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SSL_ERROR_SSL = 1
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SSL_ERROR_WANT_READ = 2
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SSL_ERROR_WANT_WRITE = 3
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SSL_ERROR_WANT_X509_LOOKUP = 4
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SSL_ERROR_SYSCALL = 5
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SSL_ERROR_ZERO_RETURN = 6
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SSL_ERROR_WANT_CONNECT = 7
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SSL_ERROR_WANT_ACCEPT = 8
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ERR_BOTH_KEY_CERT_FILES = 500
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ERR_BOTH_KEY_CERT_FILES_SVR = 298
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ERR_NO_CERTS = 331
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ERR_COOKIE_MISMATCH = 0x1408A134
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class SSLError(socket_error):
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"""This exception is raised by modules in the dtls package."""
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def __init__(self, *args):
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super(SSLError, self).__init__(*args)
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class OpenSSLError(SSLError):
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"""This exception is raised when an error occurs in the OpenSSL library"""
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def __init__(self, ssl_error, errqueue, result, func, args):
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self.ssl_error = ssl_error
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self.errqueue = errqueue
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self.result = result
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self.func = func
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self.args = args
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super(OpenSSLError, self).__init__(ssl_error, errqueue,
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result, func, args)
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class InvalidSocketError(Exception):
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"""There is a problem with a socket passed to the dtls package."""
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def __init__(self, *args):
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super(InvalidSocketError, self).__init__(*args)
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def raise_ssl_error(code):
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"""Raise an SSL error with the given error code"""
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raise SSLError(str(code) + ": " + _ssl_errors[code])
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_ssl_errors = {
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ERR_NO_CERTS: "No root certificates specified for verification " + \
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"of other-side certificates",
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ERR_BOTH_KEY_CERT_FILES: "Both the key & certificate files " + \
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"must be specified",
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ERR_BOTH_KEY_CERT_FILES_SVR: "Both the key & certificate files must be " + \
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"specified for server-side operation"
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}
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