diff options
| -rw-r--r-- | source4/scripting/python/samba/netcmd/dbcheck.py | 97 |
1 files changed, 93 insertions, 4 deletions
diff --git a/source4/scripting/python/samba/netcmd/dbcheck.py b/source4/scripting/python/samba/netcmd/dbcheck.py index 4ec1365f14..4c9e0a1af5 100644 --- a/source4/scripting/python/samba/netcmd/dbcheck.py +++ b/source4/scripting/python/samba/netcmd/dbcheck.py @@ -20,15 +20,42 @@ import ldb, sys import samba.getopt as options +from samba import dsdb from samba.common import confirm from samba.auth import system_session from samba.samdb import SamDB +from samba.dcerpc import misc from samba.netcmd import ( Command, CommandError, Option ) + +class dsdb_DN(object): + '''a class to manipulate DN components''' + + def __init__(self, samdb, dnstring, syntax_oid): + if syntax_oid in [ dsdb.DSDB_SYNTAX_BINARY_DN, dsdb.DSDB_SYNTAX_STRING_DN ]: + colons = dnstring.split(':') + if len(colons) < 4: + raise Exception("invalid DN prefix") + prefix_len = 4 + len(colons[1]) + int(colons[1]) + self.prefix = dnstring[0:prefix_len] + self.dnstring = dnstring[prefix_len:] + else: + self.dnstring = dnstring + self.prefix = '' + try: + self.dn = ldb.Dn(samdb, self.dnstring) + except Exception, msg: + print("ERROR: bad DN string '%s'" % self.dnstring) + raise + + def __str__(self): + return self.prefix + str(self.dn.extended_str(mode=1)) + + class cmd_dbcheck(Command): """check local AD database for errors""" synopsis = "dbcheck <DN> [options]" @@ -89,7 +116,7 @@ class cmd_dbcheck(Command): ################################################################ # handle empty attributes - def empty_attribute(self, dn, attrname): + def err_empty_attribute(self, dn, attrname): '''fix empty attributes''' print("ERROR: Empty attribute %s in %s" % (attrname, dn)) if not self.fix: @@ -101,6 +128,8 @@ class cmd_dbcheck(Command): m = ldb.Message() m.dn = dn m[attrname] = ldb.MessageElement('', ldb.FLAG_MOD_DELETE, attrname) + if self.verbose: + print(self.samdb.write_ldif(m, ldb.CHANGETYPE_MODIFY)) try: self.samdb.modify(m, controls=["relax:0"], validate=False) except Exception, msg: @@ -111,7 +140,7 @@ class cmd_dbcheck(Command): ################################################################ # handle normalisation mismatches - def normalise_mismatch(self, dn, attrname, values): + def err_normalise_mismatch(self, dn, attrname, values): '''fix attribute normalisation errors''' print("ERROR: Normalisation error for attribute %s in %s" % (attrname, dn)) mod_list = [] @@ -137,6 +166,8 @@ class cmd_dbcheck(Command): if nval != '': m['normv_%u' % i] = ldb.MessageElement(nval, ldb.FLAG_MOD_ADD, attrname) + if self.verbose: + print(self.samdb.write_ldif(m, ldb.CHANGETYPE_MODIFY)) try: self.samdb.modify(m, controls=["relax:0"], validate=False) except Exception, msg: @@ -146,6 +177,55 @@ class cmd_dbcheck(Command): ################################################################ + # handle a missing GUID extended DN component + def err_missing_dn_GUID(self, dn, attrname, val, dsdb_dn): + print("ERROR: missing GUID component for %s in object %s - %s" % (attrname, dn, val)) + try: + res = self.samdb.search(base=dsdb_dn.dn, scope=ldb.SCOPE_BASE, attrs=['objectGUID']) + except LdbError, (enum, estr): + print("unable to find object for DN %s - cannot fix (%s)" % (dsdb_dn.dn, estr)) + return + guid = res[0]['objectGUID'][0] + guidstr = str(misc.GUID(guid)) + dsdb_dn.dn.set_extended_component("GUID", guid) + + if not confirm('Add GUID %s giving DN %s?' % (guidstr, str(dsdb_dn))): + print("Not fixing missing GUID") + return + m = ldb.Message() + m.dn = dn + m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname) + m['new_value'] = ldb.MessageElement(str(dsdb_dn), ldb.FLAG_MOD_ADD, attrname) + if self.verbose: + print(self.samdb.write_ldif(m, ldb.CHANGETYPE_MODIFY)) + try: + self.samdb.modify(m) + except Exception, msg: + print("Failed to fix missing GUID on attribute %s : %s" % (attrname, msg)) + return + print("Fixed missing GUID on attribute %s" % attrname) + + + + ################################################################ + # specialised checking for a dn attribute + def check_dn(self, obj, attrname, syntax_oid): + '''check a DN attribute for correctness''' + error_count = 0 + for val in obj[attrname]: + dsdb_dn = dsdb_DN(self.samdb, val, syntax_oid) + + # all DNs should have a GUID component + guid = dsdb_dn.dn.get_extended_component("GUID") + if guid is None: + error_count += 1 + self.err_missing_dn_GUID(obj.dn, attrname, val, dsdb_dn) + + return 0 + + + + ################################################################ # check one object - calls to individual error handlers above def check_object(self, dn): '''check one object''' @@ -164,15 +244,24 @@ class cmd_dbcheck(Command): # check for empty attributes for val in obj[attrname]: if val == '': - self.empty_attribute(dn, attrname) + self.err_empty_attribute(dn, attrname) error_count += 1 continue + # get the syntax oid for the attribute, so we can can have + # special handling for some specific attribute types + syntax_oid = self.samdb.get_syntax_oid_from_lDAPDisplayName(attrname) + + if syntax_oid in [ dsdb.DSDB_SYNTAX_BINARY_DN, dsdb.DSDB_SYNTAX_OR_NAME, + dsdb.DSDB_SYNTAX_STRING_DN, ldb.LDB_SYNTAX_DN ]: + # it's some form of DN, do specialised checking on those + error_count += self.check_dn(obj, attrname, syntax_oid) + # check for incorrectly normalised attributes for val in obj[attrname]: normalised = self.samdb.dsdb_normalise_attributes(self.samdb, attrname, [val]) if len(normalised) != 1 or normalised[0] != val: - self.normalise_mismatch(dn, attrname, obj[attrname]) + self.err_normalise_mismatch(dn, attrname, obj[attrname]) error_count += 1 break return error_count |