from apport.hookutils import *
import os

def is_process_running(proc):
    '''
    Determine if process has a registered process id
    '''
    log = command_output(['pidof', proc])
    if not log or log[:5] == "Error" or len(log)<1:
        return False
    return True

def add_info(report):
    attach_gsettings_package(report, 'gnome-shell-common')
    attach_gsettings_schema(report, 'org.gnome.desktop.interface')
    
    result = ''

    dm_list = apport.hookutils.command_output(['sh', '-c', 
	'apt-cache search \"display manager\" | cut -d \' \' -f1 | grep -E \"dm$|gdm3\"'])

    for line in dm_list.split('\n'):
        if (is_process_running(line)):
            result = line
            break

    report['DisplayManager'] = result
