source4/scripting/python/samba/getopt.py

   1 #!/usr/bin/env python
   2
   3 # Samba-specific bits for optparse
   4 # Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 #
  19
  20 """Support for parsing Samba-related command-line options."""
  21
  22 __docformat__ = "restructuredText"
  23
  24 import optparse
  25 import os
  26 from samba.credentials import (
  27     Credentials,
  28     AUTO_USE_KERBEROS,
  29     DONT_USE_KERBEROS,
  30     MUST_USE_KERBEROS,
  31     )
  32 from samba.hostconfig import Hostconfig
  33 import sys
  34
  35
  36 class SambaOptions(optparse.OptionGroup):
  37     """General Samba-related command line options."""
  38
  39     def __init__(self, parser):
  40         from samba.param import LoadParm
  41         optparse.OptionGroup.__init__(self, parser, "Samba Common Options")
  42         self.add_option("-s", "--configfile", action="callback",
  43                         type=str, metavar="FILE", help="Configuration file",
  44                         callback=self._load_configfile)
  45         self.add_option("-d", "--debuglevel", action="callback",
  46                         type=int, metavar="DEBUGLEVEL", help="debug level",
  47                         callback=self._set_debuglevel)
  48         self.add_option("--option", action="callback",
  49                         type=str, metavar="OPTION",
  50                         help="set smb.conf option from command line",
  51                         callback=self._set_option)
  52         self.add_option("--realm", action="callback",
  53                         type=str, metavar="REALM", help="set the realm name",
  54                         callback=self._set_realm)
  55         self._configfile = None
  56         self._lp = LoadParm()
  57         self.realm = None
  58
  59     def get_loadparm_path(self):
  60         """Return path to the smb.conf file specified on the command line."""
  61         return self._configfile
  62
  63     def _load_configfile(self, option, opt_str, arg, parser):
  64         self._configfile = arg
  65
  66     def _set_debuglevel(self, option, opt_str, arg, parser):
  67         if arg < 0:
  68             raise optparse.OptionValueError("invalid %s option value: %s" %
  69                                             (opt_str, arg))
  70         self._lp.set('debug level', str(arg))
  71
  72     def _set_realm(self, option, opt_str, arg, parser):
  73         self._lp.set('realm', arg)
  74         self.realm = arg
  75
  76     def _set_option(self, option, opt_str, arg, parser):
  77         if arg.find('=') == -1:
  78             print("--option takes a 'a=b' argument")
  79             sys.exit(1)
  80         a = arg.split('=')
  81         self._lp.set(a[0], a[1])
  82
  83     def get_loadparm(self):
  84         """Return loadparm object with data specified on the command line."""
  85         if self._configfile is not None:
  86             self._lp.load(self._configfile)
  87         elif os.getenv("SMB_CONF_PATH") is not None:
  88             self._lp.load(os.getenv("SMB_CONF_PATH"))
  89         else:
  90             self._lp.load_default()
  91         return self._lp
  92
  93     def get_hostconfig(self):
  94         return Hostconfig(self.get_loadparm())
  95
  96
  97 class VersionOptions(optparse.OptionGroup):
  98     """Command line option for printing Samba version."""
  99     def __init__(self, parser):
 100         optparse.OptionGroup.__init__(self, parser, "Version Options")
 101         self.add_option("--version", action="callback",
 102                 callback=self._display_version,
 103                 help="Display version number")
 104
 105     def _display_version(self, option, opt_str, arg, parser):
 106         import samba
 107         print samba.version
 108         sys.exit(0)
 109
 110
 111 def parse_kerberos_arg(arg):
 112     if arg.lower() in ["yes", 'true', '1']:
 113         return MUST_USE_KERBEROS
 114     elif arg.lower() in ["no", 'false', '0']:
 115         return DONT_USE_KERBEROS
 116     elif arg.lower() in ["auto"]:
 117         return AUTO_USE_KERBEROS
 118     else:
 119         raise optparse.BadOptionError("invalid kerberos option: %s" % arg)
 120
 121
 122 class CredentialsOptions(optparse.OptionGroup):
 123     """Command line options for specifying credentials."""
 124
 125     def __init__(self, parser):
 126         self.no_pass = True
 127         self.ipaddress = None
 128         optparse.OptionGroup.__init__(self, parser, "Credentials Options")
 129         self.add_option("--simple-bind-dn", metavar="DN", action="callback",
 130                         callback=self._set_simple_bind_dn, type=str,
 131                         help="DN to use for a simple bind")
 132         self.add_option("--password", metavar="PASSWORD", action="callback",
 133                         help="Password", type=str, callback=self._set_password)
 134         self.add_option("-U", "--username", metavar="USERNAME",
 135                         action="callback", type=str,
 136                         help="Username", callback=self._parse_username)
 137         self.add_option("-W", "--workgroup", metavar="WORKGROUP",
 138                         action="callback", type=str,
 139                         help="Workgroup", callback=self._parse_workgroup)
 140         self.add_option("-N", "--no-pass", action="store_true",
 141                         help="Don't ask for a password")
 142         self.add_option("-k", "--kerberos", metavar="KERBEROS",
 143                         action="callback", type=str,
 144                         help="Use Kerberos", callback=self._set_kerberos)
 145         self.add_option("", "--ipaddress", metavar="IPADDRESS",
 146                         action="callback", type=str,
 147                         help="IP address of server",
 148                         callback=self._set_ipaddress)
 149         self.creds = Credentials()
 150
 151     def _parse_username(self, option, opt_str, arg, parser):
 152         self.creds.parse_string(arg)
 153
 154     def _parse_workgroup(self, option, opt_str, arg, parser):
 155         self.creds.set_domain(arg)
 156
 157     def _set_password(self, option, opt_str, arg, parser):
 158         self.creds.set_password(arg)
 159         self.no_pass = False
 160
 161     def _set_ipaddress(self, option, opt_str, arg, parser):
 162         self.ipaddress = arg
 163
 164     def _set_kerberos(self, option, opt_str, arg, parser):
 165         self.creds.set_kerberos_state(parse_kerberos_arg(arg))
 166
 167     def _set_simple_bind_dn(self, option, opt_str, arg, parser):
 168         self.creds.set_bind_dn(arg)
 169
 170     def get_credentials(self, lp, fallback_machine=False):
 171         """Obtain the credentials set on the command-line.
 172
 173         :param lp: Loadparm object to use.
 174         :return: Credentials object
 175         """
 176         self.creds.guess(lp)
 177         if self.no_pass:
 178             self.creds.set_cmdline_callbacks()
 179
 180         # possibly fallback to using the machine account, if we have
 181         # access to the secrets db
 182         if fallback_machine and not self.creds.authentication_requested():
 183             try:
 184                 self.creds.set_machine_account(lp)
 185             except Exception:
 186                 pass
 187
 188         return self.creds
 189
 190
 191 class CredentialsOptionsDouble(CredentialsOptions):
 192     """Command line options for specifying credentials of two servers."""
 193
 194     def __init__(self, parser):
 195         CredentialsOptions.__init__(self, parser)
 196         self.no_pass2 = True
 197         self.add_option("--simple-bind-dn2", metavar="DN2", action="callback",
 198                         callback=self._set_simple_bind_dn2, type=str,
 199                         help="DN to use for a simple bind")
 200         self.add_option("--password2", metavar="PASSWORD2", action="callback",
 201                         help="Password", type=str,
 202                         callback=self._set_password2)
 203         self.add_option("--username2", metavar="USERNAME2",
 204                         action="callback", type=str,
 205                         help="Username for second server",
 206                         callback=self._parse_username2)
 207         self.add_option("--workgroup2", metavar="WORKGROUP2",
 208                         action="callback", type=str,
 209                         help="Workgroup for second server",
 210                         callback=self._parse_workgroup2)
 211         self.add_option("--no-pass2", action="store_true",
 212                         help="Don't ask for a password for the second server")
 213         self.add_option("--kerberos2", metavar="KERBEROS2",
 214                         action="callback", type=str,
 215                         help="Use Kerberos", callback=self._set_kerberos2)
 216         self.creds2 = Credentials()
 217
 218     def _parse_username2(self, option, opt_str, arg, parser):
 219         self.creds2.parse_string(arg)
 220
 221     def _parse_workgroup2(self, option, opt_str, arg, parser):
 222         self.creds2.set_domain(arg)
 223
 224     def _set_password2(self, option, opt_str, arg, parser):
 225         self.creds2.set_password(arg)
 226         self.no_pass2 = False
 227
 228     def _set_kerberos2(self, option, opt_str, arg, parser):
 229         self.creds2.set_kerberos_state(parse_kerberos_arg(arg))
 230
 231     def _set_simple_bind_dn2(self, option, opt_str, arg, parser):
 232         self.creds2.set_bind_dn(arg)
 233
 234     def get_credentials2(self, lp, guess=True):
 235         """Obtain the credentials set on the command-line.
 236
 237         :param lp: Loadparm object to use.
 238         :param guess: Try guess Credentials from environment
 239         :return: Credentials object
 240         """
 241         if guess:
 242             self.creds2.guess(lp)
 243         elif not self.creds2.get_username():
 244             self.creds2.set_anonymous()
 245
 246         if self.no_pass2:
 247             self.creds2.set_cmdline_callbacks()
 248         return self.creds2