source4/setup/upgrade_from_s3

   1 #!/usr/bin/env python
   2 #
   3 # Upgrade from Samba3
   4 # Copyright Jelmer Vernooij 2005-2007
   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 import logging
  20 import optparse
  21 import os, sys
  22 import tempfile
  23
  24 # Find right directory when running from source tree
  25 sys.path.insert(0, "bin/python")
  26
  27 import samba
  28 import samba.getopt as options
  29 from samba.auth import system_session
  30 from samba.upgrade import upgrade_from_samba3
  31 from samba.samba3 import Samba3
  32 from samba.samba3 import param as s3param
  33 from samba.provision import ProvisioningError
  34
  35 def get_testparm_var(testparm, varname):
  36     cmd = "%s -s -l --parameter-name='%s' 2>/dev/null" % (testparm, varname)
  37     output = os.popen(cmd, 'r').readline()
  38     return output.strip()
  39
  40 cmd_help = """upgrade_from_s3 [options] <configuration_file> <targetdir>
  41
  42 Input arguments are:
  43   <configuration_file> - path to existing smb.conf
  44   <targetdir>          - directory in which samba4 database will be created
  45
  46 In addition, specify either samba3 database directory (with --libdir) or
  47 samba3 testparm utility (with --testparm).  """
  48
  49 parser = optparse.OptionParser(cmd_help)
  50 parser.add_option_group(options.VersionOptions(parser))
  51 parser.add_option("--quiet", help="Be quiet")
  52 parser.add_option("--libdir", type="string", metavar="DIR",
  53                   help="samba3 database directory")
  54 parser.add_option("--testparm", type="string", metavar="PATH",
  55                   help="samba3 testparm utility")
  56 parser.add_option("--use-xattrs", type="choice", choices=["yes","no","auto"], help="Define if we should use the native fs capabilities or a tdb file for storing attributes likes ntacl, auto tries to make an inteligent guess based on the user rights and system capabilities", default="auto")
  57
  58 opts, args = parser.parse_args()
  59
  60 if len(args) < 2:
  61     parser.print_usage()
  62     sys.exit(1)
  63
  64 smbconf = args[0]
  65 if not os.path.exists(smbconf):
  66     print("error: %s does not exist" % smbconf)
  67     sys.exit(1)
  68
  69 targetdir = args[1]
  70 if not os.path.isdir(targetdir):
  71     print("error: %s is not a directory" % targetdir)
  72     sys.exit(1)
  73
  74 libdir = opts.libdir
  75 testparm = opts.testparm
  76
  77 if not libdir and not testparm:
  78     print("error: please specify either libdir or testparm")
  79     sys.exit(1)
  80
  81 if libdir and testparm:
  82     print("warning: both libdir and testparm specified, libdir will be ignored.")
  83     libdir = None
  84
  85 logger = logging.getLogger("upgrade")
  86 logger.addHandler(logging.StreamHandler(sys.stdout))
  87 if opts.quiet:
  88         logger.setLevel(logging.WARNING)
  89 else:
  90         logger.setLevel(logging.INFO)
  91
  92 s3conf = s3param.get_context()
  93
  94 eadb = True
  95 if opts.use_xattrs == "yes":
  96         eadb = False
  97 elif opts.use_xattrs == "auto" and not s3conf.get("posix:eadb"):
  98         file = tempfile.NamedTemporaryFile()
  99         try:
 100                 samba.ntacls.setntacl(lp, file.name,
 101                         "O:S-1-5-32G:S-1-5-32", "S-1-5-32", "native")
 102                 eadb = False
 103         except:
 104                 logger.info("You are not root or your system do not support xattr, using tdb backend for attributes. "
 105                             "If you intend to use this provision in production, rerun the script as root on a system supporting xattrs.")
 106         file.close()
 107
 108 # Set correct default values from libdir or testparm
 109 paths = {}
 110 if libdir:
 111     paths["state directory"] = libdir
 112     paths["private dir"] = libdir
 113     paths["lock directory"] = libdir
 114 else:
 115     paths["state directory"] = get_testparm_var(testparm, "state directory")
 116     paths["private dir"] = get_testparm_var(testparm, "private dir")
 117     paths["lock directory"] = get_testparm_var(testparm, "lock directory")
 118
 119 for p in paths:
 120     s3conf.set(p, paths[p])
 121
 122 # load smb.conf parameters
 123 logger.info("Reading smb.conf")
 124 s3conf.load(smbconf)
 125 samba3 = Samba3(smbconf, s3conf)
 126
 127 logger.info("Provisioning")
 128 try:
 129     upgrade_from_samba3(samba3, logger, targetdir, session_info=system_session(), useeadb=eadb)
 130 except ProvisioningError, e:
 131         print str(e)
 132         exit(1)