#!/usr/bin/env python3

# Copyright (C) 2016 g10 Code GmbH
#
# This file is part of GPGME.
#
# GPGME is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# GPGME is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General
# Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; if not, see <http://www.gnu.org/licenses/>.

import sys
import os
from pyme import core, constants
import support

def check_result(r, typ):
    if r.invalid_signers:
        sys.exit("Invalid signer found: {}".format(r.invalid_signers.fpr))

    if len(r.signatures) != 1:
        sys.exit("Unexpected number of signatures created")

    signature = r.signatures[0]
    if signature.type != typ:
        sys.exit("Wrong type of signature created")

    if signature.pubkey_algo != constants.PK_DSA:
        sys.exit("Wrong pubkey algorithm reported: {}".format(
            signature.pubkey_algo))

    if signature.hash_algo != constants.MD_SHA1:
        sys.exit("Wrong hash algorithm reported: {}".format(
            signature.hash_algo))

    if signature.sig_class != 1:
        sys.exit("Wrong signature class reported: {}".format(
            signature.sig_class))

    if signature.fpr != "A0FF4590BB6122EDEF6E3C542D727CC768697734":
        sys.exit("Wrong fingerprint reported: {}".format(signature.fpr))


support.init_gpgme(constants.PROTOCOL_OpenPGP)
c = core.Context()
c.set_textmode(True)
c.set_armor(True)

source = core.Data("Hallo Leute\n")
sink = core.Data()

c.op_sign(source, sink, constants.SIG_MODE_NORMAL)

result = c.op_sign_result()
check_result(result, constants.SIG_MODE_NORMAL)
support.print_data(sink)

# Now a detached signature.
source.seek(0, os.SEEK_SET)
sink = core.Data()

c.op_sign(source, sink, constants.SIG_MODE_DETACH)

result = c.op_sign_result()
check_result(result, constants.SIG_MODE_DETACH)
support.print_data(sink)

# And finally a cleartext signature.  */
source.seek(0, os.SEEK_SET)
sink = core.Data()

c.op_sign(source, sink, constants.SIG_MODE_CLEAR)

result = c.op_sign_result()
check_result(result, constants.SIG_MODE_CLEAR)
support.print_data(sink)