#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
This file is part of the web2py Web Framework
Copyrighted by Massimo Di Pierro <mdipierro@cs.depaul.edu>
License: LGPLv3 (http://www.gnu.org/licenses/lgpl.html)

The widget is called from web2py.
"""

import datetime
import sys
import cStringIO
import time
import thread
import threading
import re
import os
import socket
import signal
import math
import logging
import newcron
import getpass
import main

from fileutils import w2p_pack, read_file, write_file
from settings import global_settings
from shell import run, test

try:
    import Tkinter, tkMessageBox
    import contrib.taskbar_widget
    from winservice import web2py_windows_service_handler
    have_winservice = True
except:
    have_winservice = False


try:
    BaseException
except NameError:
    BaseException = Exception

ProgramName = 'web2py Web Framework'
ProgramAuthor = 'Created by Massimo Di Pierro, Copyright 2007-' + str(datetime.datetime.now().year)
ProgramVersion = read_file('VERSION').strip()

ProgramInfo = '''%s
                 %s
                 %s''' % (ProgramName, ProgramAuthor, ProgramVersion)

if not sys.version[:3] in ['2.4', '2.5', '2.6', '2.7']:
    msg = 'Warning: web2py requires Python 2.4, 2.5 (recommended), 2.6 or 2.7 but you are running:\n%s'
    msg = msg % sys.version
    sys.stderr.write(msg)

logger = logging.getLogger("web2py")

def run_system_tests():
    major_version = sys.version_info[0]
    minor_version = sys.version_info[1]
    print "minor_version = %r" % minor_version
    if major_version == 2:
        if minor_version in (5, 6):
            print "Python 2.5 or 2.6"
            ret = os.system("PYTHONPATH=. unit2 -v gluon.tests")
        elif minor_version in (7,):
            print "Python 2.7"
            ret = os.system("PYTHONPATH=. python -m unittest -v gluon.tests")
        else:
            print "unknown python 2.x version"
            ret = 256
    else:
        print "Only Python 2.x supported."
        ret = 256
    sys.exit(ret and 1)

class IO(object):
    """   """

    def __init__(self):
        """   """

        self.buffer = cStringIO.StringIO()

    def write(self, data):
        """   """

        sys.__stdout__.write(data)
        if hasattr(self, 'callback'):
            self.callback(data)
        else:
            self.buffer.write(data)


def try_start_browser(url):
    """ Try to start the default browser """

    try:
        import webbrowser
        webbrowser.open(url)
    except:
        print 'warning: unable to detect your browser'


def start_browser(proto, ip, port):
    """ Starts the default browser """
    print 'please visit:'
    url = '%s://%s:%s' % (proto, ip, port)
    print '\t', url
    print 'starting browser...'
    try_start_browser(url)


def presentation(root):
    """ Draw the splash screen """

    root.withdraw()

    dx = root.winfo_screenwidth()
    dy = root.winfo_screenheight()

    dialog = Tkinter.Toplevel(root, bg='white')
    dialog.geometry('%ix%i+%i+%i' % (500, 300, dx / 2 - 200, dy / 2 - 150))

    dialog.overrideredirect(1)
    dialog.focus_force()

    canvas = Tkinter.Canvas(dialog,
                            background='white',
                            width=500,
                            height=300)
    canvas.pack()
    root.update()

    logo = 'splashlogo.gif'
    if os.path.exists(logo):
        img = Tkinter.PhotoImage(file=logo)
        pnl = Tkinter.Label(canvas, image=img, background='white', bd=0)
        pnl.pack(side='top', fill='both', expand='yes')
        # Prevent garbage collection of img
        pnl.image=img

    def add_label(text='Change Me', font_size=12, foreground='#195866', height=1):
        return Tkinter.Label(
            master=canvas,
            width=250,
            height=height,
            text=text,
            font=('Helvetica', font_size),
            anchor=Tkinter.CENTER,
            foreground=foreground,
            background='white'
            )

    add_label('Welcome to...').pack(side='top')
    add_label(ProgramName, 18, '#FF5C1F', 2).pack()
    add_label(ProgramAuthor).pack()
    add_label(ProgramVersion).pack()

    root.update()
    time.sleep(5)
    dialog.destroy()
    return


class web2pyDialog(object):
    """ Main window dialog """

    def __init__(self, root, options):
        """ web2pyDialog constructor  """

        root.title('web2py server')
        self.root = Tkinter.Toplevel(root)
        self.options = options
        self.scheduler_processes = {}
        self.menu = Tkinter.Menu(self.root)
        servermenu = Tkinter.Menu(self.menu, tearoff=0)
        httplog = os.path.join(self.options.folder, 'httpserver.log')

        # Building the Menu
        item = lambda: try_start_browser(httplog)
        servermenu.add_command(label='View httpserver.log',
                               command=item)

        servermenu.add_command(label='Quit (pid:%i)' % os.getpid(),
                               command=self.quit)

        self.menu.add_cascade(label='Server', menu=servermenu)

        self.pagesmenu = Tkinter.Menu(self.menu, tearoff=0)
        self.menu.add_cascade(label='Pages', menu=self.pagesmenu)

        #scheduler menu
        self.schedmenu = Tkinter.Menu(self.menu, tearoff=0)
        self.menu.add_cascade(label='Scheduler', menu=self.schedmenu)
        #start and register schedulers from options
        self.update_schedulers(start=True)

        helpmenu = Tkinter.Menu(self.menu, tearoff=0)

        # Home Page
        item = lambda: try_start_browser('http://www.web2py.com')
        helpmenu.add_command(label='Home Page',
                             command=item)

        # About
        item = lambda: tkMessageBox.showinfo('About web2py', ProgramInfo)
        helpmenu.add_command(label='About',
                             command=item)

        self.menu.add_cascade(label='Info', menu=helpmenu)

        self.root.config(menu=self.menu)

        if options.taskbar:
            self.root.protocol('WM_DELETE_WINDOW',
                               lambda: self.quit(True))
        else:
            self.root.protocol('WM_DELETE_WINDOW', self.quit)

        sticky = Tkinter.NW

        # IP
        Tkinter.Label(self.root,
                      text='Server IP:',
                      justify=Tkinter.LEFT).grid(row=0,
                                                 column=0,
                                                 sticky=sticky)
        self.ips = {}
        self.selected_ip = Tkinter.StringVar()
        row=0
        ips = [('127.0.0.1','Local')] + \
            [(ip,'Public') for ip in options.ips] + \
            [('0.0.0.0','Public')]
        for ip,legend in ips:
            self.ips[ip] = Tkinter.Radiobutton(
                self.root,text='%s (%s)' % (legend,ip),
                variable=self.selected_ip, value=ip)
            self.ips[ip].grid(row=row, column=1, sticky=sticky)
            if row==0: self.ips[ip].select()
            row+=1
        shift = row
        # Port
        Tkinter.Label(self.root,
                      text='Server Port:',
                      justify=Tkinter.LEFT).grid(row=shift,
                                                 column=0,
                                                 sticky=sticky)

        self.port_number = Tkinter.Entry(self.root)
        self.port_number.insert(Tkinter.END, self.options.port)
        self.port_number.grid(row=shift, column=1, sticky=sticky)

        # Password
        Tkinter.Label(self.root,
                      text='Choose Password:',
                      justify=Tkinter.LEFT).grid(row=shift+1,
                                                 column=0,
                                                 sticky=sticky)

        self.password = Tkinter.Entry(self.root, show='*')
        self.password.bind('<Return>', lambda e: self.start())
        self.password.focus_force()
        self.password.grid(row=shift+1, column=1, sticky=sticky)

        # Prepare the canvas
        self.canvas = Tkinter.Canvas(self.root,
                                     width=300,
                                     height=100,
                                     bg='black')
        self.canvas.grid(row=shift+2, column=0, columnspan=2)
        self.canvas.after(1000, self.update_canvas)

        # Prepare the frame
        frame = Tkinter.Frame(self.root)
        frame.grid(row=shift+3, column=0, columnspan=2)

        # Start button
        self.button_start = Tkinter.Button(frame,
                                           text='start server',
                                           command=self.start)

        self.button_start.grid(row=0, column=0)

        # Stop button
        self.button_stop = Tkinter.Button(frame,
                                          text='stop server',
                                          command=self.stop)

        self.button_stop.grid(row=0, column=1)
        self.button_stop.configure(state='disabled')

        if options.taskbar:
            self.tb = contrib.taskbar_widget.TaskBarIcon()
            self.checkTaskBar()

            if options.password != '<ask>':
                self.password.insert(0, options.password)
                self.start()
                self.root.withdraw()
        else:
            self.tb = None

    def update_schedulers(self, start=False):
        x = 0
        apps = []
        available_apps = [arq for arq in os.listdir('applications/')]
        available_apps = [arq for arq in available_apps
            if os.path.exists('applications/%s/models/scheduler.py' % arq)]
        if start:
            #the widget takes care of starting the scheduler
            if self.options.scheduler and self.options.with_scheduler:
                apps = [app.strip() for app in self.options.scheduler.split(',')
                            if app in available_apps]
        for app in apps:
            self.try_start_scheduler(app)

        #reset the menu
        self.schedmenu.delete(0, len(available_apps))
        for arq in available_apps:
            if arq not in self.scheduler_processes:
                item = lambda u = arq: self.try_start_scheduler(u)
                self.schedmenu.add_command(label="start %s" % arq,
                                            command=item)
            if arq in self.scheduler_processes:
                item = lambda u = arq: self.try_stop_scheduler(u)
                self.schedmenu.add_command(label="stop %s" % arq,
                                            command=item)

    def start_schedulers(self, app):
        try:
            from multiprocessing import Process
        except:
            sys.stderr.write('Sorry, -K only supported for python 2.6-2.7\n')
            return
        code = "from gluon import current;current._scheduler.loop()"
        print 'starting scheduler from widget for "%s"...' % app
        args = (app,True,True,None,False,code)
        logging.getLogger().setLevel(self.options.debuglevel)
        p = Process(target=run, args=args)
        self.scheduler_processes[app] = p
        self.update_schedulers()
        print "Currently running %s scheduler processes" % (len(self.scheduler_processes))
        p.start()
        print "Processes started"

    def try_stop_scheduler(self, app):
        if app in self.scheduler_processes:
            p = self.scheduler_processes[app]
            del self.scheduler_processes[app]
            p.terminate()
            p.join()
        self.update_schedulers()

    def try_start_scheduler(self, app):
        if app not in self.scheduler_processes:
            t = threading.Thread(target=self.start_schedulers, args=(app,))
            t.start()


    def checkTaskBar(self):
        """ Check taskbar status """

        if self.tb.status:
            if self.tb.status[0] == self.tb.EnumStatus.QUIT:
                self.quit()
            elif self.tb.status[0] == self.tb.EnumStatus.TOGGLE:
                if self.root.state() == 'withdrawn':
                    self.root.deiconify()
                else:
                    self.root.withdraw()
            elif self.tb.status[0] == self.tb.EnumStatus.STOP:
                self.stop()
            elif self.tb.status[0] == self.tb.EnumStatus.START:
                self.start()
            elif self.tb.status[0] == self.tb.EnumStatus.RESTART:
                self.stop()
                self.start()
            del self.tb.status[0]

        self.root.after(1000, self.checkTaskBar)

    def update(self, text):
        """ Update app text """

        try:
            self.text.configure(state='normal')
            self.text.insert('end', text)
            self.text.configure(state='disabled')
        except:
            pass  # ## this should only happen in case app is destroyed

    def connect_pages(self):
        """ Connect pages """
        #reset the menu
        available_apps = [arq for arq in os.listdir('applications/')
                          if os.path.exists('applications/%s/__init__.py' % arq)]
        self.pagesmenu.delete(0, len(available_apps))
        for arq in available_apps:
            url = self.url + '/' + arq
            start_browser = lambda u = url: try_start_browser(u)
            self.pagesmenu.add_command(label=url,
                                       command=start_browser)

    def quit(self, justHide=False):
        """ Finish the program execution """
        if justHide:
            self.root.withdraw()
        else:
            try:
                scheds = self.scheduler_processes.keys()
                for t in scheds:
                    self.try_stop_scheduler(t)
            except:
                pass
            try:
                self.server.stop()
            except:
                pass
            try:
                self.tb.Destroy()
            except:
                pass

            self.root.destroy()
            sys.exit(0)

    def error(self, message):
        """ Show error message """

        tkMessageBox.showerror('web2py start server', message)

    def start(self):
        """ Start web2py server """

        password = self.password.get()

        if not password:
            self.error('no password, no web admin interface')

        ip = self.selected_ip.get()

        regexp = '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}'
        if ip and not re.compile(regexp).match(ip):
            return self.error('invalid host ip address')

        try:
            port = int(self.port_number.get())
        except:
            return self.error('invalid port number')

        # Check for non default value for ssl inputs
        if (len(self.options.ssl_certificate) > 0) or (len(self.options.ssl_private_key) > 0):
            proto = 'https'
        else:
            proto = 'http'

        self.url = '%s://%s:%s' % (proto, ip, port)
        self.connect_pages()
        self.button_start.configure(state='disabled')

        try:
            options = self.options
            req_queue_size = options.request_queue_size
            self.server = main.HttpServer(
                ip,
                port,
                password,
                pid_filename=options.pid_filename,
                log_filename=options.log_filename,
                profiler_filename=options.profiler_filename,
                ssl_certificate=options.ssl_certificate,
                ssl_private_key=options.ssl_private_key,
                min_threads=options.minthreads,
                max_threads=options.maxthreads,
                server_name=options.server_name,
                request_queue_size=req_queue_size,
                timeout=options.timeout,
                shutdown_timeout=options.shutdown_timeout,
                path=options.folder,
                interfaces=options.interfaces)

            thread.start_new_thread(self.server.start, ())
        except Exception, e:
            self.button_start.configure(state='normal')
            return self.error(str(e))

        if not self.server_ready():
            self.button_start.configure(state='normal')
            return

        self.button_stop.configure(state='normal')

        if not options.taskbar:
            thread.start_new_thread(start_browser, (proto, ip, port))

        self.password.configure(state='readonly')
        [ip.configure(state='disabled') for ip in self.ips.values()]
        self.port_number.configure(state='readonly')

        if self.tb:
            self.tb.SetServerRunning()

    def server_ready(self):
        for listener in self.server.server.listeners:
            if listener.ready:
                return True

        return False

    def stop(self):
        """ Stop web2py server """

        self.button_start.configure(state='normal')
        self.button_stop.configure(state='disabled')
        self.password.configure(state='normal')
        [ip.configure(state='normal') for ip in self.ips.values()]
        self.port_number.configure(state='normal')
        self.server.stop()

        if self.tb:
            self.tb.SetServerStopped()

    def update_canvas(self):
        """ Update canvas """

        try:
            t1 = os.path.getsize('httpserver.log')
        except:
            self.canvas.after(1000, self.update_canvas)
            return

        try:
            fp = open('httpserver.log', 'r')
            fp.seek(self.t0)
            data = fp.read(t1 - self.t0)
            fp.close()
            value = self.p0[1:] + [10 + 90.0 / math.sqrt(1 + data.count('\n'))]
            self.p0 = value

            for i in xrange(len(self.p0) - 1):
                c = self.canvas.coords(self.q0[i])
                self.canvas.coords(self.q0[i],
                                   (c[0],
                                    self.p0[i],
                                    c[2],
                                    self.p0[i + 1]))
            self.t0 = t1
        except BaseException:
            self.t0 = time.time()
            self.t0 = t1
            self.p0 = [100] * 300
            self.q0 = [self.canvas.create_line(i, 100, i + 1, 100,
                       fill='green') for i in xrange(len(self.p0) - 1)]

        self.canvas.after(1000, self.update_canvas)


def console():
    """ Defines the behavior of the console web2py execution """
    import optparse
    import textwrap

    usage = "python web2py.py"

    description = """\
    web2py Web Framework startup script.
    ATTENTION: unless a password is specified (-a 'passwd') web2py will
    attempt to run a GUI. In this case command line options are ignored."""

    description = textwrap.dedent(description)

    parser = optparse.OptionParser(usage, None, optparse.Option, ProgramVersion)

    parser.description = description

    parser.add_option('-i',
                      '--ip',
                      default='127.0.0.1',
                      dest='ip',
                      help='ip address of the server (127.0.0.1)')

    parser.add_option('-p',
                      '--port',
                      default='8000',
                      dest='port',
                      type='int',
                      help='port of server (8000)')

    msg = 'password to be used for administration'
    msg += ' (use -a "<recycle>" to reuse the last password))'
    parser.add_option('-a',
                      '--password',
                      default='<ask>',
                      dest='password',
                      help=msg)

    parser.add_option('-c',
                      '--ssl_certificate',
                      default='',
                      dest='ssl_certificate',
                      help='file that contains ssl certificate')

    parser.add_option('-k',
                      '--ssl_private_key',
                      default='',
                      dest='ssl_private_key',
                      help='file that contains ssl private key')

    parser.add_option('--ca-cert',
                      action='store',
                      dest='ssl_ca_certificate',
                      default=None,
                      help='Use this file containing the CA certificate to validate X509 certificates from clients')

    parser.add_option('-d',
                      '--pid_filename',
                      default='httpserver.pid',
                      dest='pid_filename',
                      help='file to store the pid of the server')

    parser.add_option('-l',
                      '--log_filename',
                      default='httpserver.log',
                      dest='log_filename',
                      help='file to log connections')

    parser.add_option('-n',
                      '--numthreads',
                      default=None,
                      type='int',
                      dest='numthreads',
                      help='number of threads (deprecated)')

    parser.add_option('--minthreads',
                      default=None,
                      type='int',
                      dest='minthreads',
                      help='minimum number of server threads')

    parser.add_option('--maxthreads',
                      default=None,
                      type='int',
                      dest='maxthreads',
                      help='maximum number of server threads')

    parser.add_option('-s',
                      '--server_name',
                      default=socket.gethostname(),
                      dest='server_name',
                      help='server name for the web server')

    msg = 'max number of queued requests when server unavailable'
    parser.add_option('-q',
                      '--request_queue_size',
                      default='5',
                      type='int',
                      dest='request_queue_size',
                      help=msg)

    parser.add_option('-o',
                      '--timeout',
                      default='10',
                      type='int',
                      dest='timeout',
                      help='timeout for individual request (10 seconds)')

    parser.add_option('-z',
                      '--shutdown_timeout',
                      default='5',
                      type='int',
                      dest='shutdown_timeout',
                      help='timeout on shutdown of server (5 seconds)')

    parser.add_option('--socket-timeout',
                      default=5,
                      type='int',
                      dest='socket_timeout',
                      help='timeout for socket (5 second)')

    parser.add_option('-f',
                      '--folder',
                      default=os.getcwd(),
                      dest='folder',
                      help='folder from which to run web2py')

    parser.add_option('-v',
                      '--verbose',
                      action='store_true',
                      dest='verbose',
                      default=False,
                      help='increase --test verbosity')

    parser.add_option('-Q',
                      '--quiet',
                      action='store_true',
                      dest='quiet',
                      default=False,
                      help='disable all output')

    msg = 'set debug output level (0-100, 0 means all, 100 means none;'
    msg += ' default is 30)'
    parser.add_option('-D',
                      '--debug',
                      dest='debuglevel',
                      default=30,
                      type='int',
                      help=msg)

    msg = 'run web2py in interactive shell or IPython (if installed) with'
    msg += ' specified appname (if app does not exist it will be created).'
    msg += ' APPNAME like a/c/f (c,f optional)'
    parser.add_option('-S',
                      '--shell',
                      dest='shell',
                      metavar='APPNAME',
                      help=msg)

    msg = 'run web2py in interactive shell or bpython (if installed) with'
    msg += ' specified appname (if app does not exist it will be created).'
    msg += '\n Use combined with --shell'
    parser.add_option('-B',
                      '--bpython',
                      action='store_true',
                      default=False,
                      dest='bpython',
                      help=msg)

    msg = 'only use plain python shell; should be used with --shell option'
    parser.add_option('-P',
                      '--plain',
                      action='store_true',
                      default=False,
                      dest='plain',
                      help=msg)

    msg = 'auto import model files; default is False; should be used'
    msg += ' with --shell option'
    parser.add_option('-M',
                      '--import_models',
                      action='store_true',
                      default=False,
                      dest='import_models',
                      help=msg)

    msg = 'run PYTHON_FILE in web2py environment;'
    msg += ' should be used with --shell option'
    parser.add_option('-R',
                      '--run',
                      dest='run',
                      metavar='PYTHON_FILE',
                      default='',
                      help=msg)

    msg = 'run scheduled tasks for the specified apps: expects a list of '
    msg += 'app names as -K app1,app2,app3 '
    msg += 'or a list of app:groups as -K app1:group1:group2,app2:group1 '
    msg += 'to override specific group_names. (only strings, no spaces '
    msg += 'allowed. Requires a scheduler defined in the models'
    parser.add_option('-K',
                      '--scheduler',
                      dest='scheduler',
                      default=None,
                      help=msg)

    msg = 'run schedulers alongside webserver'
    parser.add_option('-X',
                      '--with-scheduler',
                      action='store_true',
                      default=False,
                      dest='with_scheduler',
                      help=msg)

    msg = 'run doctests in web2py environment; ' +\
        'TEST_PATH like a/c/f (c,f optional)'
    parser.add_option('-T',
                      '--test',
                      dest='test',
                      metavar='TEST_PATH',
                      default=None,
                      help=msg)

    parser.add_option('-W',
                      '--winservice',
                      dest='winservice',
                      default='',
                      help='-W install|start|stop as Windows service')

    msg = 'trigger a cron run manually; usually invoked from a system crontab'
    parser.add_option('-C',
                      '--cron',
                      action='store_true',
                      dest='extcron',
                      default=False,
                      help=msg)

    msg = 'triggers the use of softcron'
    parser.add_option('--softcron',
                      action='store_true',
                      dest='softcron',
                      default=False,
                      help=msg)

    parser.add_option('-N',
                      '--no-cron',
                      action='store_true',
                      dest='nocron',
                      default=False,
                      help='do not start cron automatically')

    parser.add_option('-J',
                      '--cronjob',
                      action='store_true',
                      dest='cronjob',
                      default=False,
                      help='identify cron-initiated command')

    parser.add_option('-L',
                      '--config',
                      dest='config',
                      default='',
                      help='config file')

    parser.add_option('-F',
                      '--profiler',
                      dest='profiler_filename',
                      default=None,
                      help='profiler filename')

    parser.add_option('-t',
                      '--taskbar',
                      action='store_true',
                      dest='taskbar',
                      default=False,
                      help='use web2py gui and run in taskbar (system tray)')

    parser.add_option('',
                      '--nogui',
                      action='store_true',
                      default=False,
                      dest='nogui',
                      help='text-only, no GUI')

    parser.add_option('-A',
                      '--args',
                      action='store',
                      dest='args',
                      default=None,
                      help='should be followed by a list of arguments to be passed to script, to be used with -S, -A must be the last option')

    parser.add_option('--no-banner',
                      action='store_true',
                      default=False,
                      dest='nobanner',
                      help='Do not print header banner')


    msg = 'listen on multiple addresses: "ip:port:cert:key:ca_cert;ip2:port2:cert2:key2:ca_cert2;..." (:cert:key optional; no spaces)'
    parser.add_option('--interfaces',
                      action='store',
                      dest='interfaces',
                      default=None,
                      help=msg)


    msg = 'runs web2py tests'
    parser.add_option('--run_system_tests',
                      action='store_true',
                      dest='run_system_tests',
                      default=False,
                      help=msg)

    if '-A' in sys.argv: k = sys.argv.index('-A')
    elif '--args' in sys.argv: k = sys.argv.index('--args')
    else: k=len(sys.argv)
    sys.argv, other_args = sys.argv[:k], sys.argv[k+1:]
    (options, args) = parser.parse_args()
    options.args = [options.run] + other_args
    global_settings.cmd_options = options
    global_settings.cmd_args = args

    try:
        options.ips = [
            ip for ip in socket.gethostbyname_ex(socket.getfqdn())[2]
            if ip!='127.0.0.1']
    except socket.gaierror:
        options.ips = []

    if options.run_system_tests:
        run_system_tests()

    if options.quiet:
        capture = cStringIO.StringIO()
        sys.stdout = capture
        logger.setLevel(logging.CRITICAL + 1)
    else:
        logger.setLevel(options.debuglevel)

    if options.config[-3:] == '.py':
        options.config = options.config[:-3]

    if options.cronjob:
        global_settings.cronjob = True  # tell the world
        options.nocron = True   # don't start cron jobs
        options.plain = True    # cronjobs use a plain shell
        options.nobanner = True
        options.nogui = True

    options.folder = os.path.abspath(options.folder)

    #  accept --interfaces in the form
    #  "ip:port:cert:key;ip2:port2;ip3:port3:cert3:key3"
    #  (no spaces; optional cert:key indicate SSL)
    if isinstance(options.interfaces, str):
        options.interfaces = [
            interface.split(':') for interface in options.interfaces.split(';')]
        for interface in options.interfaces:
            interface[1] = int(interface[1])    # numeric port
        options.interfaces = [
            tuple(interface) for interface in options.interfaces]

    #  accepts --scheduler in the form
    #  "app:group1,group2,app2:group1"
    scheduler = []
    options.scheduler_groups = None
    if isinstance(options.scheduler, str):
        if ':' in options.scheduler:
            for opt in options.scheduler.split(','):
                scheduler.append(opt.split(':'))
            options.scheduler = ','.join([app[0] for app in scheduler])
            options.scheduler_groups = scheduler

    if options.numthreads is not None and options.minthreads is None:
        options.minthreads = options.numthreads  # legacy

    if not options.cronjob:
        # If we have the applications package or if we should upgrade
        if not os.path.exists('applications/__init__.py'):
            write_file('applications/__init__.py', '')

        if not os.path.exists('welcome.w2p') or os.path.exists('NEWINSTALL'):
            try:
                w2p_pack('welcome.w2p','applications/welcome')
                os.unlink('NEWINSTALL')
            except:
                msg = "New installation: unable to create welcome.w2p file"
                sys.stderr.write(msg)

    return (options, args)

def check_existent_app(options,appname):
    if os.path.isdir(os.path.join(options.folder, 'applications', appname)):
        return True

def start_schedulers(options):
    try:
        from multiprocessing import Process
    except:
        sys.stderr.write('Sorry, -K only supported for python 2.6-2.7\n')
        return
    processes = []
    apps = [(app.strip(), None) for app in options.scheduler.split(',')]
    if options.scheduler_groups:
        apps = options.scheduler_groups
    for app in apps:
        if len(app) == 1 or app[1] == None:
            code = "from gluon import current;current._scheduler.loop()"
        else:
            code = "from gluon import current;current._scheduler.group_names = ['%s'];"
            code += "current._scheduler.loop()"
            code = code % ("','".join(app[1:]))
        app_ = app[0]
        if not check_existent_app(options, app_):
            print "Application '%s' doesn't exist, skipping" % (app_)
            continue
        print 'starting scheduler for "%s"...' % app_
        args = (app_,True,True,None,False,code)
        logging.getLogger().setLevel(options.debuglevel)
        p = Process(target=run, args=args)
        processes.append(p)
        print "Currently running %s scheduler processes" % (len(processes))
        p.start()
        print "Processes started"
    for p in processes:
        try:
            p.join()
        except (KeyboardInterrupt, SystemExit):
            print "Processes stopped"
        except:
            p.terminate()
            p.join()


def start(cron=True):
    """ Start server  """

    # ## get command line arguments

    (options, args) = console()

    if not options.nobanner:
        print ProgramName
        print ProgramAuthor
        print ProgramVersion

    from dal import DRIVERS
    if not options.nobanner:
        print 'Database drivers available: %s' % ', '.join(DRIVERS)


    # ## if -L load options from options.config file
    if options.config:
        try:
            options2 = __import__(options.config, {}, {}, '')
        except Exception:
            try:
                # Jython doesn't like the extra stuff
                options2 = __import__(options.config)
            except Exception:
                print 'Cannot import config file [%s]' % options.config
                sys.exit(1)
        for key in dir(options2):
            if hasattr(options,key):
                setattr(options,key,getattr(options2,key))

    if False and not os.path.exists('logging.conf') and \
            os.path.exists('logging.example.conf'):
        import shutil
        sys.stdout.write("Copying logging.conf.example to logging.conf ... ")
        shutil.copyfile('logging.example.conf', 'logging.conf')
        sys.stdout.write("OK\n")

    # ## if -T run doctests (no cron)
    if hasattr(options,'test') and options.test:
        test(options.test, verbose=options.verbose)
        return

    # ## if -S start interactive shell (also no cron)
    if options.shell:
        if not options.args is None:
            sys.argv[:] = options.args
        run(options.shell, plain=options.plain, bpython=options.bpython,
            import_models=options.import_models, startfile=options.run)
        return

    # ## if -C start cron run (extcron) and exit
    # ##    -K specifies optional apps list (overloading scheduler)
    if options.extcron:
        logger.debug('Starting extcron...')
        global_settings.web2py_crontype = 'external'
        if options.scheduler:   # -K
            apps = [app.strip() for app in options.scheduler.split(',') if check_existent_app(options, app.strip())]
        else:
            apps = None
        extcron = newcron.extcron(options.folder, apps=apps)
        extcron.start()
        extcron.join()
        return

    # ## if -K
    if options.scheduler and not options.with_scheduler:
        try:
            start_schedulers(options)
        except KeyboardInterrupt:
            pass
        return


    # ## if -N or not cron disable cron in this *process*
    # ## if --softcron use softcron
    # ## use hardcron in all other cases
    if cron and not options.nocron and options.softcron:
        print 'Using softcron (but this is not very efficient)'
        global_settings.web2py_crontype = 'soft'
    elif cron and not options.nocron:
        logger.debug('Starting hardcron...')
        global_settings.web2py_crontype = 'hard'
        newcron.hardcron(options.folder).start()

    # ## if -W install/start/stop web2py as service
    if options.winservice:
        if os.name == 'nt':
            if have_winservice:
                web2py_windows_service_handler(['', options.winservice],
                                               options.config)
            else:
                print 'Error: Missing python module winservice'
                sys.exit(1)
        else:
            print 'Error: Windows services not supported on this platform'
            sys.exit(1)
        return

    # ## if no password provided and havetk start Tk interface
    # ## or start interface if we want to put in taskbar (system tray)

    try:
        options.taskbar
    except:
        options.taskbar = False

    if options.taskbar and os.name != 'nt':
        print 'Error: taskbar not supported on this platform'
        sys.exit(1)

    root = None

    if not options.nogui:
        try:
            import Tkinter
            havetk = True
        except ImportError:
            logger.warn('GUI not available because Tk library is not installed')
            havetk = False

        if options.password == '<ask>' and havetk or options.taskbar and havetk:
            try:
                root = Tkinter.Tk()
            except:
                pass

    if root:
        root.focus_force()

        # Mac OS X - make the GUI window rise to the top
        if os.path.exists("/usr/bin/osascript"):
            applescript = """
tell application "System Events"
    set proc to first process whose unix id is %d
    set frontmost of proc to true
end tell
""" % (os.getpid())
            os.system("/usr/bin/osascript -e '%s'" % applescript)

        if not options.quiet:
            presentation(root)
        master = web2pyDialog(root, options)
        signal.signal(signal.SIGTERM, lambda a, b: master.quit())

        try:
            root.mainloop()
        except:
            master.quit()

        sys.exit()

    # ## if no tk and no password, ask for a password

    if not root and options.password == '<ask>':
        options.password = getpass.getpass('choose a password:')

    if not options.password and not options.nobanner:
        print 'no password, no admin interface'

    # ##-X (if no tk, the widget takes care of it himself)
    if not root and options.scheduler and options.with_scheduler:
        t = threading.Thread(target=start_schedulers, args=(options,))
        t.start()

    # ## start server

    (ip, port) = (options.ip, int(options.port))

    # Check for non default value for ssl inputs
    if (len(options.ssl_certificate) > 0) or (len(options.ssl_private_key) > 0):
        proto = 'https'
    else:
        proto = 'http'
    url = '%s://%s:%s' % (proto, ip, port)

    if not options.nobanner:
        print 'please visit:'
        print '\t', url
        print 'use "kill -SIGTERM %i" to shutdown the web2py server' % os.getpid()

    server = main.HttpServer(ip=ip,
                             port=port,
                             password=options.password,
                             pid_filename=options.pid_filename,
                             log_filename=options.log_filename,
                             profiler_filename=options.profiler_filename,
                             ssl_certificate=options.ssl_certificate,
                             ssl_private_key=options.ssl_private_key,
                             ssl_ca_certificate=options.ssl_ca_certificate,
                             min_threads=options.minthreads,
                             max_threads=options.maxthreads,
                             server_name=options.server_name,
                             request_queue_size=options.request_queue_size,
                             timeout=options.timeout,
                             socket_timeout=options.socket_timeout,
                             shutdown_timeout=options.shutdown_timeout,
                             path=options.folder,
                             interfaces=options.interfaces)

    try:
        server.start()
    except KeyboardInterrupt:
        server.stop()
        try:
            t.join()
        except:
            pass
    logging.shutdown()