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path: root/tools/tests/nv_data-imei.py
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#!/usr/bin/env python
#
#  This file is part of libsamsung-ipc.
#
#  Copyright (C) 2020 Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
#
#  libsamsung-ipc 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.
#
#  libsamsung-ipc 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 General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with libsamsung-ipc.  If not, see <http://www.gnu.org/licenses/>.

import os
import re
import sys
import sh

# sysexits.h
class SysExit(object):
    #define EX_USAGE        64      /* command line usage error */
    EX_USAGE = sh.ErrorReturnCode_64
    #define EX_NOINPUT      66      /* cannot open input */
    EX_NOINPUT = sh.ErrorReturnCode_66

def usage(progname):
    print('{} [test]'.format(progname))
    sys.exit(1)

commands = [
    'list-supported',
    'read-imei',
    'write-imei',
    'bruteforce-imei',
]

def get_output(data):
    return str(data).replace(os.linesep, '')

class NvDataImei(object):
    def __init__(self):
        srcdir = os.environ.get('srcdir', None)

        command_path = ''
        if srcdir:
            command_path = '.' + os.sep + 'nv_data-imei'
        # Enable to run tests without automake
        else:
            command_path = os.path.dirname(sys.argv[0]) \
                + os.sep \
                + '..'   \
                + os.sep \
                + 'nv_data-imei'

        if 'VALGRIND' in os.environ:
            self.nv_data_imei = sh.Command(os.environ['VALGRIND'])
            self.nv_data_imei = self.nv_data_imei.bake(
                '-v',
                '--log-file=valgrind.%p.log',
                '--leak-check=full',
                command_path)
        else:
            self.nv_data_imei = sh.Command(command_path)

    def test_help(self):
        try:
            self.nv_data_imei('')
        except SysExit.EX_USAGE:
            pass
        else:
            raise Exception()

        for help_arg in ['-h', '--help']:
            self.nv_data_imei(help_arg)
            for command in commands:
                self.nv_data_imei(command, help_arg)
                try:
                    self.nv_data_imei('file', command, help_arg)
                except SysExit.EX_USAGE:
                    pass
                else:
                    raise Exception()

        self.nv_data_imei('list-supported')

    def test_commands(self):
        # Create nv_data.bin
        valid_imei = '123456789012345'
        offset = 0x100
        XMM616_NV_DATA_SIZE = 0x200000
        nv_data_bin = get_output(sh.mktemp())
        sh.ddrescue('/dev/zero', nv_data_bin, '-s', str(XMM616_NV_DATA_SIZE))

        self.nv_data_imei(nv_data_bin, 'write-imei', '-o', str(hex(offset)),
                          '-i', valid_imei)
        output = get_output(self.nv_data_imei(nv_data_bin, 'read-imei', '-o',
                                              str(hex(offset))))
        print(output)
        expect = 'IMEI: ' + valid_imei
        if output != expect:
            raise Exception()

        output = get_output(self.nv_data_imei(nv_data_bin, 'bruteforce-imei',
                                              '-i', valid_imei))
        print(output)
        expect = re.escape('Found IMEI at {} ({})'.format(str(hex(offset)),
                                                          offset))
        if not re.search(expect, output):
            raise Exception()

        inaccessible_nv_data_bin = str(sh.mktemp('-u')).replace(os.linesep,'')
        sh.ddrescue('/dev/zero', inaccessible_nv_data_bin, '-s',
                    str(XMM616_NV_DATA_SIZE))
        sh.chmod('000', inaccessible_nv_data_bin);
        try:
            self.nv_data_imei(inaccessible_nv_data_bin, 'write-imei',
                              '-o', '0x0', '-i', valid_imei)
            self.nv_data_imei(inaccessible_nv_data_bin, 'read-imei',
                              '-o', '0x0')
            self.nv_data_imei(inaccessible_nv_data_bin, 'bruteforce-imei',
                              '-i', valid_imei)
        except SysExit.EX_NOINPUT:
            pass
        else:
            raise Exception()

def main():
    nv_data_imei = NvDataImei()
    nv_data_imei.test_help()
    nv_data_imei.test_commands()

if __name__ == '__main__':
    rc = main()
    sys.exit(rc)