s4:netcmd/gpo.py: we don't need to set autogenerated attributes
[metze/samba/wip.git] / source4 / scripting / python / samba / netcmd / gpo.py
index 2a6bef0f37f5be96fc01988797c8fbb846eb0658..07842c29e6ecc86058e41b557789fb28afaf1872 100644 (file)
@@ -4,6 +4,7 @@
 #
 # Copyright Andrew Tridgell 2010
 # Copyright Giampaolo Lauria 2011 <lauria2@yahoo.com>
+# Copyright Amitay Isaacs 2011 <amitay@gmail.com>
 #
 # based on C implementation by Guenther Deschner and Wilco Baan Hofman
 #
@@ -21,6 +22,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+import os
 import samba.getopt as options
 import ldb
 
@@ -38,6 +40,11 @@ from samba.ndr import ndr_unpack
 import samba.security
 import samba.auth
 from samba.auth import AUTH_SESSION_INFO_DEFAULT_GROUPS, AUTH_SESSION_INFO_AUTHENTICATED, AUTH_SESSION_INFO_SIMPLE_PRIVILEGES
+from samba.netcmd.common import netcmd_finddc
+from samba import policy
+from samba import smb
+import uuid
+
 
 def samdb_connect(ctx):
     '''make a ldap connection to the server'''
@@ -56,18 +63,24 @@ def attr_default(msg, attrname, default):
     return default
 
 
-def flags_string(flags, value):
-    '''return a set of flags as a string'''
-    if value == 0:
-        return 'NONE'
-    ret = ''
-    for (str, val) in flags:
-        if val & value:
-            ret += str + ' '
-            value &= ~val
-    if value != 0:
-        ret += '0x%08x' % value
-    return ret.rstrip()
+def gpo_flags_string(value):
+    '''return gpo flags string'''
+    flags = policy.get_gpo_flags(value)
+    if not flags:
+        ret = 'NONE'
+    else:
+        ret = ' '.join(flags)
+    return ret
+
+
+def gplink_options_string(value):
+    '''return gplink options string'''
+    options = policy.get_gplink_options(value)
+    if not options:
+        ret = 'NONE'
+    else:
+        ret = ' '.join(options)
+    return ret
 
 
 def parse_gplink(gplink):
@@ -84,73 +97,202 @@ def parse_gplink(gplink):
     return ret
 
 
+def encode_gplink(gplist):
+    '''Encode an array of dn and options into gPLink string'''
+    ret = ''
+    for g in gplist:
+        ret += "[LDAP://%s;%d]" % (g['dn'], g['options'])
+    return ret
+
+
+def dc_url(lp, creds, url=None, dc=None):
+    '''If URL is not specified, return URL for writable DC.
+    If dc is provided, use that to construct ldap URL'''
+
+    if url is None:
+        if dc is None:
+            try:
+                dc = netcmd_finddc(lp, creds)
+            except Exception, e:
+                raise RunTimeError("Could not find a DC for domain", e)
+        url = 'ldap://' + dc
+    return url
+
+
+def get_gpo_dn(samdb, gpo):
+    '''Construct the DN for gpo'''
+
+    dn = samdb.get_default_basedn()
+    dn.add_child(ldb.Dn(samdb, "CN=Policies,DC=System"))
+    dn.add_child(ldb.Dn(samdb, "CN=%s" % gpo))
+    return dn
+
+
+def get_gpo_info(samdb, gpo=None, displayname=None, dn=None):
+    '''Get GPO information using gpo, displayname or dn'''
+
+    policies_dn = samdb.get_default_basedn()
+    policies_dn.add_child(ldb.Dn(samdb, "CN=Policies,CN=System"))
+
+    base_dn = policies_dn
+    search_expr = "(objectClass=groupPolicyContainer)"
+    search_scope = ldb.SCOPE_ONELEVEL
+
+    if gpo is not None:
+        search_expr = "(&(objectClass=groupPolicyContainer)(name=%s))" % ldb.binary_encode(gpo)
+
+    if displayname is not None:
+        search_expr = "(&(objectClass=groupPolicyContainer)(displayname=%s))" % ldb.binary_encode(displayname)
+
+    if dn is not None:
+        base_dn = dn
+        search_scope = ldb.SCOPE_BASE
+
+    try:
+        msg = samdb.search(base=base_dn, scope=search_scope,
+                            expression=search_expr,
+                            attrs=['nTSecurityDescriptor',
+                                    'versionNumber',
+                                    'flags',
+                                    'name',
+                                    'displayName',
+                                    'gPCFileSysPath'])
+    except Exception, e:
+        if gpo is not None:
+            mesg = "Cannot get information for GPO %s" % gpo
+        else:
+            mesg = "Cannot get information for GPOs"
+        raise CommandError(mesg, e)
+
+    return msg
+
+
+def parse_unc(unc):
+    '''Parse UNC string into a hostname, a service, and a filepath'''
+    if unc.startswith('\\\\') and unc.startswith('//'):
+        return []
+    tmp = unc[2:].split('/', 2)
+    if len(tmp) == 3:
+        return tmp
+    tmp = unc[2:].split('\\', 2)
+    if len(tmp) == 3:
+        return tmp;
+    return []
+
+
+def copy_directory_remote_to_local(conn, remotedir, localdir):
+    if not os.path.isdir(localdir):
+        os.mkdir(localdir)
+    r_dirs = [ remotedir ]
+    l_dirs = [ localdir ]
+    while r_dirs:
+        r_dir = r_dirs.pop()
+        l_dir = l_dirs.pop()
+
+        dirlist = conn.list(r_dir)
+        for e in dirlist:
+            r_name = r_dir + '\\' + e['name']
+            l_name = os.path.join(l_dir, e['name'])
+
+            if e['attrib'] & smb.FILE_ATTRIBUTE_DIRECTORY:
+                r_dirs.append(r_name)
+                l_dirs.append(l_name)
+                os.mkdir(l_name)
+            else:
+                data = conn.loadfile(r_name)
+                file(l_name, 'w').write(data)
+
+
+def copy_directory_local_to_remote(conn, localdir, remotedir):
+    if not conn.chkpath(remotedir):
+        conn.mkdir(remotedir)
+    l_dirs = [ localdir ]
+    r_dirs = [ remotedir ]
+    while l_dirs:
+        l_dir = l_dirs.pop()
+        r_dir = r_dirs.pop()
+
+        dirlist = os.listdir(l_dir)
+        for e in dirlist:
+            l_name = os.path.join(l_dir, e)
+            r_name = r_dir + '\\' + e
+
+            if os.path.isdir(l_name):
+                l_dirs.append(l_name)
+                r_dirs.append(r_name)
+                conn.mkdir(r_name)
+            else:
+                data = file(l_name, 'r').read()
+                conn.savefile(r_name, data)
+
+
+def create_directory_hier(conn, remotedir):
+    elems = remotedir.replace('/', '\\').split('\\')
+    path = ""
+    for e in elems:
+        path = path + '\\' + e
+        if not conn.chkpath(path):
+            conn.mkdir(path)
+
+
 class cmd_listall(Command):
     """list all GPOs"""
 
-    synopsis = "%prog gpo listall"
+    synopsis = "%prog gpo listall [options]"
 
     takes_options = [
-        Option("-H", help="LDB URL for database or target server", type=str)
+        Option("-H", "--URL", help="LDB URL for database or target server", type=str,
+               metavar="URL", dest="H")
         ]
 
-    def run(self, H=None, sambaopts=None,
-            credopts=None, versionopts=None, server=None):
+    def run(self, H=None, sambaopts=None, credopts=None, versionopts=None):
 
-        self.url = H
         self.lp = sambaopts.get_loadparm()
-
         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 
-        samdb_connect(self)
+        self.url = dc_url(self.lp, self.creds, H)
 
-        policies_dn = self.samdb.get_default_basedn()
-        policies_dn.add_child(ldb.Dn(self.samdb, "CN=Policies,CN=System"))
+        samdb_connect(self)
 
-        gpo_flags = [
-            ("GPO_FLAG_USER_DISABLE", dsdb.GPO_FLAG_USER_DISABLE ),
-            ( "GPO_FLAG_MACHINE_DISABLE", dsdb.GPO_FLAG_MACHINE_DISABLE ) ]
+        msg = get_gpo_info(self.samdb, None)
 
-        try:
-            msg = self.samdb.search(base=policies_dn, scope=ldb.SCOPE_ONELEVEL,
-                                    expression="(objectClass=groupPolicyContainer)",
-                                    attrs=['nTSecurityDescriptor', 'versionNumber', 'flags', 'name', 'displayName', 'gPCFileSysPath'])
-        except Exception, e:
-            raise CommandError("Failed to list policies in %s" % policies_dn, e)
         for m in msg:
             print("GPO          : %s" % m['name'][0])
             print("display name : %s" % m['displayName'][0])
             print("path         : %s" % m['gPCFileSysPath'][0])
             print("dn           : %s" % m.dn)
             print("version      : %s" % attr_default(m, 'versionNumber', '0'))
-            print("flags        : %s" % flags_string(gpo_flags, int(attr_default(m, 'flags', 0))))
+            print("flags        : %s" % gpo_flags_string(int(attr_default(m, 'flags', 0))))
             print("")
 
 
 class cmd_list(Command):
-    """list GPOs for a user"""
+    """list GPOs for an account"""
 
-    synopsis = "%prog gpo list <username>"
+    synopsis = "%prog gpo list <username> [options]"
 
     takes_args = [ 'username' ]
 
     takes_options = [
-        Option("-H", help="LDB URL for database or target server", type=str)
+        Option("-H", "--URL", help="LDB URL for database or target server", type=str,
+               metavar="URL", dest="H")
         ]
 
-    def run(self, username, H=None, sambaopts=None,
-            credopts=None, versionopts=None, server=None):
+    def run(self, username, H=None, sambaopts=None, credopts=None, versionopts=None):
 
-        self.url = H
         self.lp = sambaopts.get_loadparm()
-
         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 
+        self.url = dc_url(self.lp, self.creds, H)
+
         samdb_connect(self)
 
         try:
-            user_dn = self.samdb.search(expression='(&(samAccountName=%s)(objectclass=User))' % username)[0].dn
+            msg = self.samdb.search(expression='(&(|(samAccountName=%s)(samAccountName=%s$))(objectClass=User))' %
+                                                (ldb.binary_encode(username),ldb.binary_encode(username)))
+            user_dn = msg[0].dn
         except Exception, e:
-            raise CommandError("Failed to find user %s" % username, e)
+            raise CommandError("Failed to find account %s" % username, e)
 
         # check if its a computer account
         try:
@@ -187,9 +329,10 @@ class cmd_list(Command):
 
                     try:
                         gmsg = self.samdb.search(base=g['dn'], scope=ldb.SCOPE_BASE,
-                                                 attrs=['flags', 'ntSecurityDescriptor'])
+                                                 attrs=['name', 'displayName', 'flags',
+                                                        'ntSecurityDescriptor'])
                     except Exception:
-                        print "Failed to fetch gpo object %s" % g['dn']
+                        print("Failed to fetch gpo object %s" % g['dn'])
                         continue
 
                     secdesc_ndr = gmsg[0]['ntSecurityDescriptor'][0]
@@ -201,7 +344,7 @@ class cmd_list(Command):
                                                     dcerpc.security.SEC_ADS_LIST |
                                                     dcerpc.security.SEC_ADS_READ_PROP)
                     except RuntimeError:
-                        print "Failed access check on %s" % msg.dn
+                        print("Failed access check on %s" % msg.dn)
                         continue
 
                     # check the flags on the GPO
@@ -210,7 +353,7 @@ class cmd_list(Command):
                         continue
                     if not is_computer and (flags & dsdb.GPO_FLAG_USER_DISABLE):
                         continue
-                    gpos.append(g)
+                    gpos.append((gmsg[0]['displayName'][0], gmsg[0]['name'][0]))
 
             # check if this blocks inheritance
             gpoptions = int(attr_default(msg, 'gPOptions', 0))
@@ -221,14 +364,613 @@ class cmd_list(Command):
                 break
             dn = dn.parent()
 
-        print("GPO's for user %s" % username)
+        if is_computer:
+            msg_str = 'computer'
+        else:
+            msg_str = 'user'
+
+        print("GPOs for %s %s" % (msg_str, username))
         for g in gpos:
-            print("\t%s" % g['dn'])
+            print("    %s %s" % (g[0], g[1]))
+
+
+class cmd_show(Command):
+    """Show information for a GPO"""
+
+    synopsis = "%prog gpo show <gpo> [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = [ 'gpo' ]
+
+    takes_options = [
+        Option("-H", help="LDB URL for database or target server", type=str)
+        ]
+
+    def run(self, gpo, H=None, sambaopts=None, credopts=None, versionopts=None):
+
+        self.lp = sambaopts.get_loadparm()
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        self.url = dc_url(self.lp, self.creds, H)
+
+        samdb_connect(self)
+
+        try:
+            msg = get_gpo_info(self.samdb, gpo)[0]
+        except Exception, e:
+            raise CommandError("GPO %s does not exist" % gpo, e)
+
+        secdesc_ndr = msg['ntSecurityDescriptor'][0]
+        secdesc = ndr_unpack(dcerpc.security.descriptor, secdesc_ndr)
+
+        print("GPO          : %s" % msg['name'][0])
+        print("display name : %s" % msg['displayName'][0])
+        print("path         : %s" % msg['gPCFileSysPath'][0])
+        print("dn           : %s" % msg.dn)
+        print("version      : %s" % attr_default(msg, 'versionNumber', '0'))
+        print("flags        : %s" % gpo_flags_string(int(attr_default(msg, 'flags', 0))))
+        print("ACL          : %s" % secdesc.as_sddl())
+        print("")
+
+
+class cmd_getlink(Command):
+    """List GPO Links for a container"""
+
+    synopsis = "%prog gpo getlink <container_dn> [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = [ 'container_dn' ]
+
+    takes_options = [
+        Option("-H", help="LDB URL for database or target server", type=str)
+        ]
+
+    def run(self, container_dn, H=None, sambaopts=None, credopts=None,
+                versionopts=None):
+
+        self.lp = sambaopts.get_loadparm()
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        self.url = dc_url(self.lp, self.creds, H)
+
+        samdb_connect(self)
+
+        try:
+            msg = self.samdb.search(base=container_dn, scope=ldb.SCOPE_BASE,
+                                    expression="(objectClass=*)",
+                                    attrs=['gPlink'])[0]
+        except Exception, e:
+            raise CommandError("Could not find Container DN %s (%s)" % container_dn, e)
+
+        if 'gPLink' in msg:
+            print("GPO(s) linked to DN %s" % container_dn)
+            gplist = parse_gplink(msg['gPLink'][0])
+            for g in gplist:
+                msg = get_gpo_info(self.samdb, dn=g['dn'])
+                print("    GPO     : %s" % msg[0]['name'][0])
+                print("    Name    : %s" % msg[0]['displayName'][0])
+                print("    Options : %s" % gplink_options_string(g['options']))
+                print("")
+        else:
+            print("No GPO(s) linked to DN=%s" % container_dn)
+
+
+class cmd_setlink(Command):
+    """Add or Update a GPO link to a container"""
+
+    synopsis = "%prog gpo setlink <container_dn> <gpo> [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = [ 'container_dn', 'gpo' ]
+
+    takes_options = [
+        Option("-H", help="LDB URL for database or target server", type=str),
+        Option("--disable", dest="disabled", default=False, action='store_true',
+            help="Disable policy"),
+        Option("--enforce", dest="enforced", default=False, action='store_true',
+            help="Enforce policy")
+        ]
+
+    def run(self, container_dn, gpo, H=None, disabled=False, enforced=False,
+                sambaopts=None, credopts=None, versionopts=None):
+
+        self.lp = sambaopts.get_loadparm()
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        self.url = dc_url(self.lp, self.creds, H)
+
+        samdb_connect(self)
+
+        gplink_options = 0
+        if disabled:
+            gplink_options |= dsdb.GPLINK_OPT_DISABLE
+        if enforced:
+            gplink_options |= dsdb.GPLINK_OPT_ENFORCE
+
+        # Check if valid GPO DN
+        try:
+            msg = get_gpo_info(self.samdb, gpo=gpo)[0]
+        except Exception, e:
+            raise CommandError("GPO %s does not exist" % gpo_dn, e)
+        gpo_dn = get_gpo_dn(self.samdb, gpo)
+
+        # Check if valid Container DN
+        try:
+            msg = self.samdb.search(base=container_dn, scope=ldb.SCOPE_BASE,
+                                    expression="(objectClass=*)",
+                                    attrs=['gPlink'])[0]
+        except Exception, e:
+            raise CommandError("Could not find container DN %s" % container_dn, e)
+
+        # Update existing GPlinks or Add new one
+        existing_gplink = False
+        if 'gPLink' in msg:
+            gplist = parse_gplink(msg['gPLink'][0])
+            existing_gplink = True
+            found = False
+            for g in gplist:
+                if g['dn'].lower() == gpo_dn.lower():
+                    g['options'] = gplink_options
+                    found = True
+                    break
+            if not found:
+                gplist.insert(0, { 'dn' : gpo_dn, 'options' : gplink_options })
+        else:
+            gplist = []
+            gplist.append({ 'dn' : gpo_dn, 'options' : gplink_options })
+
+        gplink_str = encode_gplink(gplist)
+
+        m = ldb.Message()
+        m.dn = ldb.Dn(self.samdb, container_dn)
+
+        if existing_gplink:
+            m['new_value'] = ldb.MessageElement(gplink_str, ldb.FLAG_MOD_REPLACE, 'gPLink')
+        else:
+            m['new_value'] = ldb.MessageElement(gplink_str, ldb.FLAG_MOD_ADD, 'gPLink')
+
+        try:
+            self.samdb.modify(m)
+        except Exception, e:
+            raise CommandError("Error adding GPO Link", e)
+
+        print("Added/Updated GPO link")
+        cmd_getlink().run(container_dn, H, sambaopts, credopts, versionopts)
+
+
+class cmd_dellink(Command):
+    """Delete GPO link from a container"""
+
+    synopsis = "%prog gpo dellink <container_dn> <gpo> [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = [ 'container_dn', 'gpo' ]
+
+    takes_options = [
+        Option("-H", help="LDB URL for database or target server", type=str),
+        ]
+
+    def run(self, container_dn, gpo_dn, H=None, sambaopts=None, credopts=None,
+                versionopts=None):
+
+        self.lp = sambaopts.get_loadparm()
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        self.url = dc_url(self.lp, self.creds, H)
+
+        samdb_connect(self)
+
+        # Check if valid GPO
+        try:
+            msg = get_gpo_info(self.sambdb, gpo=gpo)[0]
+        except Exception, e:
+                raise CommandError("GPO %s does not exist" % gpo, e)
+        gpo_dn = get_gpo_dn(self.samdb, gpo)
+
+        # Check if valid Container DN and get existing GPlinks
+        try:
+            msg = self.samdb.search(base=container_dn, scope=ldb.SCOPE_BASE,
+                                    expression="(objectClass=*)",
+                                    attrs=['gPlink'])[0]
+        except Exception, e:
+            raise CommandError("Could not find container DN %s" % dn, e)
+
+        if 'gPLink' in msg:
+            gplist = parse_gplink(msg['gPLink'][0])
+            for g in gplist:
+                if g['dn'].lower() == gpo_dn.lower():
+                    gplist.remove(g)
+                    break
+        else:
+            raise CommandError("Specified GPO is not linked to this container");
+
+        m = ldb.Message()
+        m.dn = ldb.Dn(self.samdb, container_dn)
+
+        if gplist:
+            gplink_str = encode_gplink(gplist)
+            m['new_value'] = ldb.MessageElement(gplink_str, ldb.FLAG_MOD_REPLACE, 'gPLink')
+        else:
+            m['new_value'] = ldb.MessageElement('', ldb.FLAG_MOD_DELETE, 'gPLink')
+
+        try:
+            self.samdb.modify(m)
+        except Exception, e:
+            raise CommandError("Error Removing GPO Link (%s)" % e)
+
+        print("Deleted GPO link.")
+        cmd_getlink().run(container_dn, H, sambaopts, credopts, versionopts)
+
+
+class cmd_getinheritance(Command):
+    """Get inheritance flag for a container"""
+
+    synopsis = "%prog gpo getinheritance <container_dn> [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = [ 'container_dn' ]
+
+    takes_options = [
+        Option("-H", help="LDB URL for database or target server", type=str)
+        ]
+
+    def run(self, container_dn, H=None, sambaopts=None, credopts=None,
+                versionopts=None):
+
+        self.url = H
+        self.lp = sambaopts.get_loadparm()
+
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        samdb_connect(self)
+
+        try:
+            msg = self.samdb.search(base=container_dn, scope=ldb.SCOPE_BASE,
+                                    expression="(objectClass=*)",
+                                    attrs=['gPOptions'])[0]
+        except Exception, e:
+            raise CommandError("Could not find Container DN %s" % container_dn, e)
+
+        inheritance = 0
+        if 'gPOptions' in msg:
+            inheritance = int(msg['gPOptions'][0]);
+
+        if inheritance == dsdb.GPO_BLOCK_INHERITANCE:
+            print("Container has GPO_BLOCK_INHERITANCE")
+        else:
+            print("Container has GPO_INHERIT")
+
+
+class cmd_setinheritance(Command):
+    """Set inheritance flag on a container"""
+
+    synopsis = "%prog gpo setinheritance <container_dn> <block|inherit> [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = [ 'container_dn', 'inherit_state' ]
+
+    takes_options = [
+        Option("-H", help="LDB URL for database or target server", type=str)
+        ]
+
+    def run(self, container_dn, inherit_state, H=None, sambaopts=None, credopts=None,
+                versionopts=None):
+
+        if inherit_state.lower() == 'block':
+            inheritance = dsdb.GPO_BLOCK_INHERITANCE
+        elif inherit_state.lower() == 'inherit':
+            inheritance = dsdb.GPO_INHERIT
+        else:
+            raise CommandError("Unknown inheritance state (%s)" % inherit_state)
+
+        self.url = H
+        self.lp = sambaopts.get_loadparm()
+
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        samdb_connect(self)
+
+        try:
+            msg = self.samdb.search(base=container_dn, scope=ldb.SCOPE_BASE,
+                                    expression="(objectClass=*)",
+                                    attrs=['gPOptions'])[0]
+        except Exception, e:
+            raise CommandError("Could not find Container DN %s" % container_dn, e)
+
+        m = ldb.Message()
+        m.dn = ldb.Dn(self.samdb, container_dn)
+
+        if 'gPOptions' in msg:
+            m['new_value'] = ldb.MessageElement(str(inheritance), ldb.FLAG_MOD_REPLACE, 'gPOptions')
+        else:
+            m['new_value'] = ldb.MessageElement(str(inheritance), ldb.FLAG_MOD_ADD, 'gPOptions');
+
+        try:
+            self.samdb.modify(m)
+        except Exception, e:
+            raise CommandError("Error setting inheritance state %s" % inherit_state, e)
+
+
+class cmd_fetch(Command):
+    """Download a GPO"""
+
+    synopsis = "%prog gpo fetch <gpo> [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = [ 'gpo' ]
+
+    takes_options = [
+        Option("-H", help="LDB URL for database or target server", type=str),
+        Option("--tmpdir", help="Temporary directory for copying policy files", type=str)
+        ]
+
+    def run(self, gpo, H=None, tmpdir=None, sambaopts=None, credopts=None, versionopts=None):
+
+        self.lp = sambaopts.get_loadparm()
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        dc_hostname = netcmd_finddc(self.lp, self.creds)
+        self.url = dc_url(self.lp, self.creds, H, dc=dc_hostname)
+
+        samdb_connect(self)
+        try:
+            msg = get_gpo_info(self.samdb, gpo)[0]
+        except Exception, e:
+            raise CommandError("GPO %s does not exist" % gpo)
+
+        # verify UNC path
+        unc = msg['gPCFileSysPath'][0]
+        try:
+            [dom_name, service, sharepath] = parse_unc(unc)
+        except:
+            raise CommandError("Invalid GPO path (%s)" % unc)
+
+        # SMB connect to DC
+        try:
+            conn = smb.SMB(dc_hostname, service, lp=self.lp, creds=self.creds)
+        except Exception, e:
+            raise CommandError("Error connecting to '%s' using SMB" % dc_hostname, e)
+
+        # Copy GPT
+        if tmpdir is None:
+            tmpdir = "/tmp"
+        if not os.path.isdir(tmpdir):
+            raise CommandError("Temoprary directory '%s' does not exist" % tmpdir)
+
+        localdir = os.path.join(tmpdir, "policy")
+        if not os.path.isdir(localdir):
+            os.mkdir(localdir)
+
+        gpodir = os.path.join(localdir, gpo)
+        if os.path.isdir(gpodir):
+            raise CommandError("GPO directory '%s' already exists, refusing to overwrite" % gpodir)
+
+        try:
+            os.mkdir(gpodir)
+            copy_directory_remote_to_local(conn, sharepath, gpodir)
+        except Exception, e:
+            raise CommandError("Error copying GPO from DC", e)
+        print('GPO copied to %s' % gpodir)
+
+
+class cmd_create(Command):
+    """Create an empty GPO"""
+
+    synopsis = "%prog gpo create <displayname> [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = [ 'displayname' ]
+
+    takes_options = [
+        Option("-H", help="LDB URL for database or target server", type=str),
+        Option("--tmpdir", help="Temporary directory for copying policy files", type=str)
+        ]
+
+    def run(self, displayname, H=None, tmpdir=None, sambaopts=None, credopts=None, 
+            versionopts=None):
+
+        self.lp = sambaopts.get_loadparm()
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        self.url = dc_url(self.lp, self.creds, H)
+
+        dc_hostname = netcmd_finddc(self.lp, self.creds)
+        samdb_connect(self)
+
+        msg = get_gpo_info(self.samdb, displayname=displayname)
+        if msg.count > 0:
+            raise CommandError("A GPO already existing with name '%s'" % displayname)
+
+        # Create new GUID
+        guid  = str(uuid.uuid4())
+        gpo = "{%s}" % guid.upper()
+        realm = self.lp.get('realm')
+        unc_path = "\\\\%s\\sysvol\\%s\\Policies\\%s" % (realm, realm, gpo)
+
+        # Create GPT
+        if tmpdir is None:
+            tmpdir = "/tmp"
+        if not os.path.isdir(tmpdir):
+            raise CommandError("Temporary directory '%s' does not exist" % tmpdir)
+
+        localdir = os.path.join(tmpdir, "policy")
+        if not os.path.isdir(localdir):
+            os.mkdir(localdir)
+
+        gpodir = os.path.join(localdir, gpo)
+        if os.path.isdir(gpodir):
+            raise CommandError("GPO directory '%s' already exists, refusing to overwrite" % gpodir)
+
+        try:
+            os.mkdir(gpodir)
+            os.mkdir(os.path.join(gpodir, "Machine"))
+            os.mkdir(os.path.join(gpodir, "User"))
+            gpt_contents = "[General]\r\nVersion=0\r\n"
+            file(os.path.join(gpodir, "GPT.INI"), "w").write(gpt_contents)
+        except Exception, e:
+            raise CommandError("Error Creating GPO files", e) 
+
+        # Add cn=<guid>
+        gpo_dn = self.samdb.get_default_basedn()
+        gpo_dn.add_child(ldb.Dn(self.samdb, "CN=Policies,CN=System"))
+        gpo_dn.add_child(ldb.Dn(self.samdb, "CN=%s" % gpo))
+
+        m = ldb.Message()
+        m.dn = ldb.Dn(self.samdb, gpo_dn.get_linearized())
+        m['a01'] = ldb.MessageElement("groupPolicyContainer", ldb.FLAG_MOD_ADD, "objectClass")
+        m['a02'] = ldb.MessageElement(displayname, ldb.FLAG_MOD_ADD, "displayName")
+        m['a03'] = ldb.MessageElement(unc_path, ldb.FLAG_MOD_ADD, "gPCFileSysPath")
+        m['a04'] = ldb.MessageElement("0", ldb.FLAG_MOD_ADD, "flags")
+        m['a05'] = ldb.MessageElement("0", ldb.FLAG_MOD_ADD, "versionNumber")
+        m['a06'] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_ADD, "showInAdvancedViewOnly")
+        m['a07'] = ldb.MessageElement("2", ldb.FLAG_MOD_ADD, "gpcFunctionalityVersion")
+        try:
+            self.samdb.add(m)
+        except Exception, e:
+            raise CommandError("Error adding GPO in AD", e)
+
+        # Add cn=User,cn=<guid>
+        child_dn = gpo_dn
+        child_dn.add_child(ldb.Dn(self.samdb, "CN=User"))
+
+        m = ldb.Message()
+        m.dn = ldb.Dn(self.samdb, child_dn.get_linearized())
+        m['a01'] = ldb.MessageElement("container", ldb.FLAG_MOD_ADD, "objectClass")
+        m['a02'] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_ADD, "showInAdvancedViewOnly")
+        try:
+            self.samdb.add(m)
+        except Exception, e:
+            raise CommandError("Error adding GPO in AD", e)
+
+        # Add cn=User,cn=<guid>
+        child_dn = gpo_dn
+        child_dn.add_child(ldb.Dn(self.samdb, "CN=Machine"))
+
+        m = ldb.Message()
+        m.dn = ldb.Dn(self.samdb, child_dn.get_linearized())
+        m['a01'] = ldb.MessageElement("container", ldb.FLAG_MOD_ADD, "objectClass")
+        m['a02'] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_ADD, "showInAdvancedViewOnly")
+        try:
+            self.samdb.add(m)
+        except Exception, e:
+            raise CommandError("Error adding GPO in AD", e)
+
+        # Copy GPO files over SMB
+        [dom_name, service, sharepath] = parse_unc(unc_path)
+        try:
+            conn = smb.SMB(dc_hostname, service, lp=self.lp, creds=self.creds)
+        except Exception, e:
+            raise CommandError("Error connecting to '%s' using SMB" % dc_hostname, e)
+
+        try:
+            create_directory_hier(conn, sharepath)
+            copy_directory_local_to_remote(conn, gpodir, sharepath)
+        except Exception, e:
+            raise CommandError("Error Copying GPO to DC", e)
+
+        # Get new security descriptor
+        msg = get_gpo_info(self.samdb, gpo=gpo)[0]
+        ds_sd_ndr = msg['ntSecurityDescriptor'][0]
+        ds_sd = ndr_unpack(dcerpc.security.descriptor, ds_sd_ndr)
+
+        # Create a file system security descriptor
+        fs_sd = dcerpc.security.descriptor()
+        fs_sd.owner_sid = ds_sd.owner_sid
+        fs_sd.group_sid = ds_sd.group_sid
+        fs_sd.type = ds_sd.type
+        fs_sd.revision = ds_sd.revision
+
+        # Copy sacl
+        fs_sd.sacl = ds_sd.sacl
+
+        # Copy dacl
+        dacl = ds_sd.dacl
+        for ace in dacl.aces:
+            # Don't add the allow for SID_BUILTIN_PREW2K
+            if (not (ace.type & dcerpc.security.SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT) and 
+                    ace.trustee == dcerpc.security.SID_BUILTIN_PREW2K):
+                continue
+
+            # Copy the ace from the directory server security descriptor
+            new_ace = ace
+
+            # Set specific inheritance flags for within the GPO
+            new_ace.flags |= (dcerpc.security.SEC_ACE_FLAG_OBJECT_INHERIT |
+                             dcerpc.security.SEC_ACE_FLAG_CONTAINER_INHERIT)
+            if ace.trustee == dcerpc.security.SID_CREATOR_OWNER:
+                new_ace.flags |= dcerpc.security.SEC_ACE_FLAG_INHERIT_ONLY
+
+            # Get a directory access mask from the assigned access mask on the ldap object
+            new_ace.access_mask = policy.ads_to_dir_access_mask(ace.access_mask)
+
+            # Add the ace to DACL
+            fs_sd.dacl_add(new_ace)
+
+        # Set ACL
+        try:
+            conn.set_acl(sharepath, fs_sd)
+        except Exception, e:
+            raise CommandError("Error setting ACL on GPT", e)
+
+        print "GPO '%s' created as %s" % (displayname, gpo)
+
+
+class cmd_setacl(Command):
+    """Set ACL on a GPO"""
 
 
 class cmd_gpo(SuperCommand):
-    """GPO commands"""
+    """Group Policy Object (GPO) commands"""
 
     subcommands = {}
     subcommands["listall"] = cmd_listall()
     subcommands["list"] = cmd_list()
+    subcommands["show"] = cmd_show()
+    subcommands["getlink"] = cmd_getlink()
+    subcommands["setlink"] = cmd_setlink()
+    subcommands["dellink"] = cmd_dellink()
+    subcommands["getinheritance"] = cmd_getinheritance()
+    subcommands["setinheritance"] = cmd_setinheritance()
+    subcommands["fetch"] = cmd_fetch()
+    subcommands["create"] = cmd_create()
+    subcommands["setacl"] = cmd_setacl()