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import os, subprocess
from socket import gethostname
import cherrypy
import simplejson as json
from gettext import gettext as _
from filedict import FileDict
from modules.auth import require
from plugin_mount import PagePlugin, FormPlugin
import cfg
from forms import Form
from model import User
from util import *
import platform
class Config(PagePlugin):
def __init__(self, *args, **kwargs):
self.register_page("sys.config")
@cherrypy.expose
@require()
def index(self):
parts = self.forms('/sys/config')
parts['title']=_("Configure this %s" % cfg.box_name)
return self.fill_template(**parts)
def valid_hostname(name):
"""Return '' if name is a valid hostname by our standards (not
just by RFC 952 and RFC 1123. We're more conservative than the
standard. If hostname isn't valid, return message explaining why."""
message = ''
if len(name) > 63:
message += "<br />Hostname too long (max is 63 characters)"
if not is_alphanumeric(name):
message += "<br />Hostname must be alphanumeric"
if not name[0] in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ":
message += "<br />Hostname must start with a letter"
return message
def set_hostname(hostname):
"Sets machine hostname to hostname"
cfg.log.info("Writing '%s' to /etc/hostname with exmachina" % hostname)
try:
cfg.exmachina.augeas.set("/files/etc/hostname/*", hostname)
cfg.exmachina.augeas.save()
# don't persist/cache change unless it was saved successfuly
sys_store = filedict_con(cfg.store_file, 'sys')
sys_store['hostname'] = hostname
if platform.linux_distribution()[0]=="Ubuntu" :
cfg.exmachina.service.start("hostname")
else:
cfg.exmachina.initd.restart("hostname.sh") # is hostname.sh debian-only?
except OSError, e:
raise cherrypy.HTTPError(500, "Hostname restart failed: %s" % e)
class general(FormPlugin, PagePlugin):
url = ["/sys/config"]
order = 30
def help(self, *args, **kwargs):
## only expert users are going to get deep enough to see any timestamps
if not cfg.users.expert():
return ''
return _(#"""<strong>Time Zone</strong>
"""<p>Set your timezone to get accurate
timestamps. %(product)s will use this information to set your
%(box)s's systemwide timezone.</p>
""" % {'product':cfg.product_name, 'box':cfg.box_name})
def main(self, message='', **kwargs):
sys_store = filedict_con(cfg.store_file, 'sys')
hostname = cfg.exmachina.augeas.get("/files/etc/hostname/*")
# this layer of persisting configuration in sys_store could/should be
# removed -BLN
defaults = {'time_zone': "slurp('/etc/timezone').rstrip()",
'hostname': "hostname",
}
for k,c in defaults.items():
if not k in kwargs:
try:
kwargs[k] = sys_store[k]
except KeyError:
exec("if not '%(k)s' in kwargs: sys_store['%(k)s'] = kwargs['%(k)s'] = %(c)s" % {'k':k, 'c':c})
# over-ride the sys_store cached value
kwargs['hostname'] = hostname
## Get the list of supported timezones and the index in that list of the current one
module_file = __file__
if module_file.endswith(".pyc"):
module_file = module_file[:-1]
time_zones = json.loads(slurp(os.path.join(os.path.dirname(os.path.realpath(module_file)), "time_zones")))
for i in range(len(time_zones)):
if kwargs['time_zone'] == time_zones[i]:
time_zone_id = i
break
## A little sanity checking. Make sure the current timezone is in the list.
try:
cfg.log('kwargs tz: %s, from_table: %s' % (kwargs['time_zone'], time_zones[time_zone_id]))
except NameError:
cfg.log.critical("Unknown Time Zone: %s" % kwargs['time_zone'])
raise cherrypy.HTTPError(500, "Unknown Time Zone: %s" % kwargs['time_zone'])
## And now, the form.
form = Form(title=_("General Config"),
action="/sys/config/general/index",
name="config_general_form",
message=message )
form.html(self.help())
form.dropdown(_("Time Zone"), name="time_zone", vals=time_zones, select=time_zone_id)
form.html("<p>Your hostname is the local name by which other machines on your LAN can reach you.</p>")
form.text_input('Hostname', name='hostname', value=kwargs['hostname'])
form.submit(_("Submit"))
return form.render()
def process_form(self, time_zone='', hostname='', *args, **kwargs):
sys_store = filedict_con(cfg.store_file, 'sys')
message = ''
if hostname != sys_store['hostname']:
msg = valid_hostname(hostname)
if msg == '':
old_val = sys_store['hostname']
try:
set_hostname(hostname)
except Exception, e:
cfg.log.error(e)
cfg.log.info("Trying to restore old hostname value.")
set_hostname(old_val)
raise
else:
message += msg
if time_zone != sys_store['time_zone']:
src = os.path.join("/usr/share/zoneinfo", time_zone)
cfg.log.info("Setting timezone to %s" % time_zone)
cfg.exmachina.misc.set_timezone(time_zone)
sys_store['time_zone'] = time_zone
return message or "Settings updated."
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