#!/usr/bin/python3
#
# Collect information about an iwlwifi firmware error dump.
#
# Copyright (c) 2014 Canonical Ltd.
# Author: Seth Forshee <seth.forshee@canonical.com>
#
# This program 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.  See http://www.gnu.org/copyleft/gpl.html for
# the full text of the license.

import os, sys, re
import apport, apport.fileutils
from apport.hookutils import command_output

if len(sys.argv) != 2:
    sys.exit(1)

phy = os.path.basename(sys.argv[1])
sysfs_path = '/sys/kernel/debug/ieee80211/' + phy + '/iwlwifi/iwlmvm/fw_error_dump'
if not os.path.exists(sysfs_path):
    sys.exit(1)

pr = apport.Report('KernelCrash')
pr.add_package(apport.packaging.get_kernel_package())
pr['Title'] = 'iwlwifi firmware error'
pr.add_os_info()

# Get iwl firmware version and error code from dmesg
dmesg = command_output(['dmesg'])
regex = re.compile('^.*iwlwifi [0-9a-fA-F:]{10}\.[0-9a-fA-F]: Loaded firmware version: ([0-9\.]+).*\\n.*iwlwifi [0-9a-fA-F:]{10}\.[0-9a-fA-F]: (0x[0-9A-F]{8} \| [A-Z_]+)', re.MULTILINE)
m = regex.findall(dmesg)
if m:
    l = m[len(m) - 1]
    fw_version = l[0]
    error_code = l[1]

    pr['IwlFwVersion'] = fw_version
    pr['IwlErrorCode'] = error_code
    pr['DuplicateSignature'] = 'iwlwifi:' + fw_version + ':' + error_code
    pr['Title'] += ': ' + error_code

# Get iwl firmware dump file from debugfs
try:
    with open(sysfs_path, 'rb') as f:
        pr['IwlFwDump'] = f.read()
        # Firmware dump could contain sensitive information
        pr['LaunchpadPrivate'] = 'yes'
        pr['LaunchpadSubscribe'] = 'canonical-kernel-team'
except IOError:
    pass

try:
    with apport.fileutils.make_report_file(pr) as f:
        pr.write(f)
except IOError as e:
    apport.fatal('Cannot create report: ' + str(e))
