# Copyright (C) 2015-2019 Virgil Security, Inc.
#
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# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
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#     (1) Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
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#     (2) Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in
#     the documentation and/or other materials provided with the
#     distribution.
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#     (3) Neither the name of the copyright holder nor the names of its
#     contributors may be used to endorse or promote products derived from
#     this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# POSSIBILITY OF SUCH DAMAGE.
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# Lead Maintainer: Virgil Security Inc. <support@virgilsecurity.com>


from ctypes import *


class VirgilCryptoPheError(Exception):
    pass


class VsceStatus(object):
    """Defines the library status codes."""

    # No errors was occurred.
    SUCCESS = 0
    # Success proof check failed.
    ERROR_INVALID_SUCCESS_PROOF = -1
    # Failure proof check failed.
    ERROR_INVALID_FAIL_PROOF = -2
    # RNG returned error.
    ERROR_RNG_FAILED = -3
    # Protobuf decode failed.
    ERROR_PROTOBUF_DECODE_FAILED = -4
    # Invalid public key.
    ERROR_INVALID_PUBLIC_KEY = -5
    # Invalid private key.
    ERROR_INVALID_PRIVATE_KEY = -6
    # AES error occurred.
    ERROR_AES_FAILED = -7

    STATUS_DICT = {
        0: "No errors was occurred.",
        -1: "Success proof check failed.",
        -2: "Failure proof check failed.",
        -3: "RNG returned error.",
        -4: "Protobuf decode failed.",
        -5: "Invalid public key.",
        -6: "Invalid private key.",
        -7: "AES error occurred."
    }

    @classmethod
    def handle_status(cls, status):
        """Handle low level lib status"""
        if status != 0:
            try:
                raise VirgilCryptoPheError(cls.STATUS_DICT[status])
            except KeyError:
                raise VirgilCryptoPheError("Unknown error")
