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

   1 #!/usr/bin/env python
   2 #
   3 # spn management
   4 #
   5 # Copyright Matthieu Patou mat@samba.org 2010
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20
  21 import samba.getopt as options
  22 import ldb
  23 import re
  24 from samba import provision
  25 from samba.samdb import SamDB
  26 from samba.auth import system_session
  27 from samba.netcmd import (
  28     Command,
  29     CommandError,
  30     SuperCommand,
  31     Option
  32     )
  33
  34 def _get_user_realm_domain(user):
  35     """ get the realm or the domain and the base user
  36         from user like:
  37         * username
  38         * DOMAIN\username
  39         * username@REALM
  40     """
  41     baseuser = user
  42     realm = ""
  43     domain = ""
  44     m = re.match(r"(\w+)\\(\w+$)", user)
  45     if m:
  46         domain = m.group(1)
  47         baseuser = m.group(2)
  48         return (baseuser.lower(), domain.upper(), realm)
  49     m = re.match(r"(\w+)@(\w+)", user)
  50     if m:
  51         baseuser = m.group(1)
  52         realm = m.group(2)
  53     return (baseuser.lower(), domain, realm.upper())
  54
  55 class cmd_spn_list(Command):
  56     """List spns of a given user."""
  57     synopsis = "%prog spn list <user>"
  58
  59     takes_optiongroups = {
  60         "sambaopts": options.SambaOptions,
  61         "credopts": options.CredentialsOptions,
  62         "versionopts": options.VersionOptions,
  63         }
  64
  65     takes_args = ["user"]
  66
  67     def run(self, user, credopts=None, sambaopts=None, versionopts=None):
  68         lp = sambaopts.get_loadparm()
  69         creds = credopts.get_credentials(lp)
  70         paths = provision.provision_paths_from_lp(lp, lp.get("realm"))
  71         sam = SamDB(paths.samdb, session_info=system_session(),
  72                     credentials=creds, lp=lp)
  73         # TODO once I understand how, use the domain info to naildown
  74         # to the correct domain
  75         (cleaneduser, realm, domain) = _get_user_realm_domain(user)
  76         print cleaneduser
  77         res = sam.search(expression="samaccountname=%s" % cleaneduser,
  78                             scope=ldb.SCOPE_SUBTREE,
  79                             attrs=["servicePrincipalName"])
  80         if len(res) >0:
  81             spns = res[0].get("servicePrincipalName")
  82             found = False
  83             flag = ldb.FLAG_MOD_ADD
  84             if spns != None:
  85                 print "User %s has the following servicePrincipalName: " %  str(res[0].dn)
  86                 for e in spns:
  87                     print "\t %s" % (str(e))
  88
  89             else:
  90                 print "User %s has no servicePrincipalName" % str(res[0].dn)
  91         else:
  92             raise CommandError("User %s not found" % user)
  93
  94 class cmd_spn_add(Command):
  95     """Create a new spn."""
  96     synopsis = "%prog spn add [--force] <name> <user>"
  97
  98     takes_optiongroups = {
  99         "sambaopts": options.SambaOptions,
 100         "credopts": options.CredentialsOptions,
 101         "versionopts": options.VersionOptions,
 102         }
 103     takes_options = [
 104         Option("--force", help="Force the addition of the spn"\
 105                                " even it exists already", action="store_true"),
 106             ]
 107     takes_args = ["name", "user"]
 108
 109     def run(self, name, user,  force=False, credopts=None, sambaopts=None, versionopts=None):
 110         lp = sambaopts.get_loadparm()
 111         creds = credopts.get_credentials(lp)
 112         paths = provision.provision_paths_from_lp(lp, lp.get("realm"))
 113         sam = SamDB(paths.samdb, session_info=system_session(),
 114                     credentials=creds, lp=lp)
 115         res = sam.search(expression="servicePrincipalName=%s" % name,
 116                             scope=ldb.SCOPE_SUBTREE,
 117                             )
 118         if len(res) != 0  and not force:
 119             raise CommandError("Service principal %s already"
 120                                    " affected to another user" % name)
 121
 122         (cleaneduser, realm, domain) = _get_user_realm_domain(user)
 123         res = sam.search(expression="samaccountname=%s" % cleaneduser,
 124                             scope=ldb.SCOPE_SUBTREE,
 125                             attrs=["servicePrincipalName"])
 126         if len(res) >0:
 127             res[0].dn
 128             msg = ldb.Message()
 129             spns = res[0].get("servicePrincipalName")
 130             tab = []
 131             found = False
 132             flag = ldb.FLAG_MOD_ADD
 133             if spns != None:
 134                 for e in spns:
 135                     if str(e) == name:
 136                         found = True
 137                     tab.append(str(e))
 138                 flag = ldb.FLAG_MOD_REPLACE
 139             tab.append(name)
 140             msg.dn = res[0].dn
 141             msg["servicePrincipalName"] = ldb.MessageElement(tab, flag,
 142                                                 "servicePrincipalName")
 143             if not found:
 144                 sam.modify(msg)
 145             else:
 146                 raise CommandError("Service principal %s already"
 147                                        " affected to %s" % (name, user))
 148         else:
 149             raise CommandError("User %s not found" % user)
 150
 151
 152 class cmd_spn_delete(Command):
 153     """Delete a spn."""
 154     synopsis = "%prog spn delete <name> [user]"
 155
 156     takes_optiongroups = {
 157         "sambaopts": options.SambaOptions,
 158         "credopts": options.CredentialsOptions,
 159         "versionopts": options.VersionOptions,
 160         }
 161
 162     takes_args = ["name", "user?"]
 163
 164     def run(self, name, user=None, credopts=None, sambaopts=None, versionopts=None):
 165         lp = sambaopts.get_loadparm()
 166         creds = credopts.get_credentials(lp)
 167         paths = provision.provision_paths_from_lp(lp, lp.get("realm"))
 168         sam = SamDB(paths.samdb, session_info=system_session(),
 169                     credentials=creds, lp=lp)
 170         res = sam.search(expression="servicePrincipalName=%s" % name,
 171                             scope=ldb.SCOPE_SUBTREE,
 172                             attrs=["servicePrincipalName", "samAccountName"])
 173         if len(res) >0:
 174             result = None
 175             if user is not None:
 176                 (cleaneduser, realm, domain) = _get_user_realm_domain(user)
 177                 for elem in res:
 178                     if str(elem["samAccountName"]).lower() == cleaneduser:
 179                         result = elem
 180                 if result is None:
 181                     raise CommandError("Unable to find user %s with"
 182                                            " spn %s" % (user, name))
 183             else:
 184                 if len(res) != 1:
 185                     listUser = ""
 186                     for r in res:
 187                         listUser = "%s\n%s" % (listUser, str(r.dn))
 188                     raise CommandError("More than one user has the spn %s "\
 189                            "and no specific user was specified, list of users"\
 190                            " with this spn:%s" % (name, listUser))
 191                 else:
 192                     result=res[0]
 193
 194
 195             msg = ldb.Message()
 196             spns = result.get("servicePrincipalName")
 197             tab = []
 198             if spns != None:
 199                 for e in spns:
 200                     if str(e) != name:
 201                         tab.append(str(e))
 202                 flag = ldb.FLAG_MOD_REPLACE
 203             msg.dn = result.dn
 204             msg["servicePrincipalName"] = ldb.MessageElement(tab, flag,
 205                                             "servicePrincipalName")
 206             sam.modify(msg)
 207         else:
 208             raise CommandError("Service principal %s not affected" % name)
 209
 210 class cmd_spn(SuperCommand):
 211     """User management [server connection needed]"""
 212
 213     subcommands = {}
 214     subcommands["add"] = cmd_spn_add()
 215     subcommands["list"] = cmd_spn_list()
 216     subcommands["delete"] = cmd_spn_delete()
 217