source4/scripting/python/samba/netcmd/testparm.py

   1 #   Unix SMB/CIFS implementation.
   2 #   Test validity of smb.conf
   3 #   Copyright (C) 2010-2011 Jelmer Vernooij <jelmer@samba.org>
   4 #
   5 # Based on the original in C:
   6 #   Copyright (C) Karl Auer 1993, 1994-1998
   7 #   Extensively modified by Andrew Tridgell, 1995
   8 #   Converted to popt by Jelmer Vernooij (jelmer@nl.linux.org), 2002
   9 #   Updated for Samba4 by Andrew Bartlett <abartlet@samba.org> 2006
  10 #
  11 # This program is free software; you can redistribute it and/or modify
  12 # it under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation; either version 3 of the License, or
  14 # (at your option) any later version.
  15 #
  16 # This program is distributed in the hope that it will be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 #
  24 # Testbed for loadparm.c/params.c
  25 #
  26 # This module simply loads a specified configuration file and
  27 # if successful, dumps it's contents to stdout. Note that the
  28 # operation is performed with DEBUGLEVEL at 3.
  29 #
  30 # Useful for a quick 'syntax check' of a configuration file.
  31 #
  32
  33 import os
  34 import sys
  35
  36 import samba
  37 import samba.getopt as options
  38 from samba.netcmd import Command, CommandError, Option
  39
  40 class cmd_testparm(Command):
  41     """Syntax check the configuration file."""
  42
  43     synopsis = "%prog [options]"
  44
  45     takes_optiongroups = {
  46         "sambaopts": options.SambaOptions,
  47         "versionopts": options.VersionOptions
  48     }
  49
  50     takes_options = [
  51         Option("--section-name", type=str,
  52                help="Limit testparm to a named section"),
  53         Option("--parameter-name", type=str,
  54                help="Limit testparm to a named parameter"),
  55         Option("--client-name", type=str,
  56                help="Client DNS name for 'hosts allow' checking "
  57                     "(should match reverse lookup)"),
  58         Option("--client-ip", type=str,
  59                help="Client IP address for 'hosts allow' checking"),
  60         Option("--suppress-prompt", action="store_true", default=False,
  61                help="Suppress prompt for enter"),
  62         Option("-v", "--verbose", action="store_true",
  63                default=False, help="Show default options too"),
  64         # We need support for smb.conf macros before this will work again
  65         Option("--server", type=str, help="Set %L macro to servername"),
  66         # These are harder to do with the new code structure
  67         Option("--show-all-parameters", action="store_true", default=False,
  68                help="Show the parameters, type, possible values")
  69         ]
  70
  71     takes_args = []
  72
  73     def run(self, sambaopts, versionopts, section_name=None,
  74             parameter_name=None, client_ip=None, client_name=None,
  75             verbose=False, suppress_prompt=None, show_all_parameters=False,
  76             server=None):
  77         if server:
  78             raise NotImplementedError("--server not yet implemented")
  79         if show_all_parameters:
  80             raise NotImplementedError("--show-all-parameters not yet implemented")
  81         if client_name is not None and client_ip is None:
  82             raise CommandError("Both a DNS name and an IP address are "
  83                                "required for the host access check")
  84
  85         try:
  86             lp = sambaopts.get_loadparm()
  87         except RuntimeError, err:
  88             raise CommandError(err)
  89
  90         # We need this to force the output
  91         samba.set_debug_level(2)
  92
  93         logger = self.get_logger("testparm")
  94
  95         logger.info("Loaded smb config files from %s", lp.configfile)
  96         logger.info("Loaded services file OK.")
  97
  98         valid = self.do_global_checks(lp, logger)
  99         valid = valid and self.do_share_checks(lp, logger)
 100         if client_name is not None and client_ip is not None:
 101             self.check_client_access(lp, logger, client_name, client_ip)
 102         else:
 103             if section_name is not None or parameter_name is not None:
 104                 if parameter_name is None:
 105                     lp[section_name].dump(sys.stdout, lp.default_service,
 106                             verbose)
 107                 else:
 108                     self.outf.write(lp.get(parameter_name, section_name)+"\n")
 109             else:
 110                 if not suppress_prompt:
 111                     self.outf.write("Press enter to see a dump of your service definitions\n")
 112                     sys.stdin.readline()
 113                 lp.dump(sys.stdout, verbose)
 114         if valid:
 115             return
 116         else:
 117             raise CommandError("Invalid smb.conf")
 118
 119     def do_global_checks(self, lp, logger):
 120         valid = True
 121
 122         netbios_name = lp.get("netbios name")
 123         if not samba.valid_netbios_name(netbios_name):
 124             logger.error("netbios name %s is not a valid netbios name",
 125                          netbios_name)
 126             valid = False
 127
 128         workgroup = lp.get("workgroup")
 129         if not samba.valid_netbios_name(workgroup):
 130             logger.error("workgroup name %s is not a valid netbios name",
 131                          workgroup)
 132             valid = False
 133
 134         lockdir = lp.get("lockdir")
 135
 136         if not os.path.isdir(lockdir):
 137             logger.error("lock directory %s does not exist", lockdir)
 138             valid = False
 139
 140         piddir = lp.get("pid directory")
 141
 142         if not os.path.isdir(piddir):
 143             logger.error("pid directory %s does not exist", piddir)
 144             valid = False
 145
 146         winbind_separator = lp.get("winbind separator")
 147
 148         if len(winbind_separator) != 1:
 149             logger.error("the 'winbind separator' parameter must be a single "
 150                          "character.")
 151             valid = False
 152
 153         if winbind_separator == '+':
 154             logger.error(
 155                 "'winbind separator = +' might cause problems with group "
 156                 "membership.")
 157             valid = False
 158
 159         return valid
 160
 161     def allow_access(self, deny_list, allow_list, cname, caddr):
 162         raise NotImplementedError(self.allow_access)
 163
 164     def do_share_checks(self, lp, logger):
 165         valid = True
 166         for s in lp.services():
 167             if len(s) > 12:
 168                 logger.warning(
 169                     "You have some share names that are longer than 12 "
 170                     "characters. These may not be accessible to some older "
 171                     "clients. (Eg. Windows9x, WindowsMe, and not listed in "
 172                     "smbclient in Samba 3.0.)")
 173                 break
 174
 175         for s in lp.services():
 176             deny_list = lp.get("hosts deny", s)
 177             allow_list = lp.get("hosts allow", s)
 178             if deny_list:
 179                 for entry in deny_list:
 180                     if "*" in entry or "?" in entry:
 181                         logger.error("Invalid character (* or ?) in hosts deny "
 182                                      "list (%s) for service %s.", entry, s)
 183                         valid = False
 184
 185             if allow_list:
 186                 for entry in allow_list:
 187                     if "*" in entry or "?" in entry:
 188                         logger.error("Invalid character (* or ?) in hosts allow "
 189                                      "list (%s) for service %s.", entry, s)
 190                         valid = False
 191         return valid
 192
 193     def check_client_access(self, lp, logger, cname, caddr):
 194         # this is totally ugly, a real `quick' hack
 195         for s in lp.services():
 196             if (self.allow_access(lp.get("hosts deny"), lp.get("hosts allow"), cname,
 197                              caddr) and
 198                 self.allow_access(lp.get("hosts deny", s), lp.get("hosts allow", s),
 199                              cname, caddr)):
 200                 logger.info("Allow connection from %s (%s) to %s", cname, caddr, s)
 201             else:
 202                 logger.info("Deny connection from %s (%s) to %s", cname, caddr, s)
 203
 204 ##   FIXME: We need support for smb.conf macros before this will work again
 205 ##
 206 ##    if (new_local_machine) {
 207 ##        set_local_machine_name(new_local_machine, True)
 208 ##    }
 209 #