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authorAndrew Tridgell <tridge@samba.org>2011-10-06 14:21:41 +1100
committerAndrew Tridgell <tridge@samba.org>2011-10-06 07:08:35 +0200
commit3fca66e2b343c6386476a52832591ae4e435d6b2 (patch)
tree8a60373ed27643e4b37a3e377a5e85939327fc75 /source4/scripting/python
parentd7f617e2e180eab6decb18e697f1e1294194a2cb (diff)
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samba-tool: add support for fixing broken backlinks in dbcheck
this allows dangling backlinks to be removed Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org> Autobuild-User: Andrew Tridgell <tridge@samba.org> Autobuild-Date: Thu Oct 6 07:08:35 CEST 2011 on sn-devel-104
Diffstat (limited to 'source4/scripting/python')
-rw-r--r--source4/scripting/python/samba/dbchecker.py52
1 files changed, 32 insertions, 20 deletions
diff --git a/source4/scripting/python/samba/dbchecker.py b/source4/scripting/python/samba/dbchecker.py
index ea5a9030c6..f19891a8d9 100644
--- a/source4/scripting/python/samba/dbchecker.py
+++ b/source4/scripting/python/samba/dbchecker.py
@@ -201,6 +201,32 @@ class dbcheck(object):
################################################################
+ # handle a DN pointing to a deleted object
+ def err_deleted_dn(self, dn, attrname, val, dsdb_dn, correct_dn):
+ self.report("ERROR: target DN is deleted for %s in object %s - %s" % (attrname, dn, val))
+ self.report("Target GUID points at deleted DN %s" % correct_dn)
+ if not self.confirm_all('Remove DN link?', 'remove_all_deleted_DN_links'):
+ self.report("Not removing")
+ return
+ m = ldb.Message()
+ m.dn = dn
+ m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
+ if self.do_modify(m, ["show_recycled:1", "%s:0" % dsdb.DSDB_CONTROL_DBCHECK],
+ "Failed to remove deleted DN attribute %s" % attrname):
+ self.report("Removed deleted DN on attribute %s" % attrname)
+
+ ################################################################
+ # handle a missing target DN (both GUID and DN string form are missing)
+ def err_missing_dn_GUID(self, dn, attrname, val, dsdb_dn):
+ # check if its a backlink
+ linkID = self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname)
+ if (linkID & 1 == 0) and str(dsdb_dn).find('DEL\\0A') == -1:
+ self.report("Not removing dangling forward link")
+ return
+ self.err_deleted_dn(dn, attrname, val, dsdb_dn, dsdb_dn)
+
+
+ ################################################################
# handle a missing GUID extended DN component
def err_incorrect_dn_GUID(self, dn, attrname, val, dsdb_dn, errstr):
self.report("ERROR: %s component for %s in object %s - %s" % (errstr, attrname, dn, val))
@@ -209,10 +235,12 @@ class dbcheck(object):
res = self.samdb.search(base=str(dsdb_dn.dn), scope=ldb.SCOPE_BASE,
attrs=[], controls=controls)
except ldb.LdbError, (enum, estr):
- self.report("unable to find object for DN %s - cannot fix (%s)" % (dsdb_dn.dn, estr))
+ self.report("unable to find object for DN %s - (%s)" % (dsdb_dn.dn, estr))
+ self.err_missing_dn_GUID(dn, attrname, val, dsdb_dn)
return
if len(res) == 0:
- self.report("unable to find object for DN %s - cannot fix" % dsdb_dn.dn)
+ self.report("unable to find object for DN %s" % dsdb_dn.dn)
+ self.err_missing_dn_GUID(dn, attrname, val, dsdb_dn)
return
dsdb_dn.dn = res[0].dn
@@ -230,22 +258,6 @@ class dbcheck(object):
################################################################
- # handle a DN pointing to a deleted object
- def err_deleted_dn(self, dn, attrname, val, dsdb_dn, correct_dn):
- self.report("ERROR: target DN is deleted for %s in object %s - %s" % (attrname, dn, val))
- self.report("Target GUID points at deleted DN %s" % correct_dn)
- if not self.confirm_all('Remove DN?', 'remove_all_deleted_DN_links'):
- self.report("Not removing")
- return
- m = ldb.Message()
- m.dn = dn
- m['old_value'] = ldb.MessageElement(val, ldb.FLAG_MOD_DELETE, attrname)
- if self.do_modify(m, ["show_recycled:1"],
- "Failed to remove deleted DN attribute %s" % attrname):
- self.report("Removed deleted DN on attribute %s" % attrname)
-
-
- ################################################################
# handle a DN string being incorrect
def err_dn_target_mismatch(self, dn, attrname, val, dsdb_dn, correct_dn, errstr):
self.report("ERROR: incorrect DN string component for %s in object %s - %s" % (attrname, dn, val))
@@ -329,7 +341,7 @@ class dbcheck(object):
guidstr = str(misc.GUID(guid))
attrs=['isDeleted']
- linkkID = self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname)
+ linkID = self.samdb_schema.get_linkId_from_lDAPDisplayName(attrname)
reverse_link_name = self.samdb_schema.get_backlink_from_lDAPDisplayName(attrname)
if reverse_link_name is not None:
attrs.append(reverse_link_name)
@@ -370,7 +382,7 @@ class dbcheck(object):
match_count += 1
if match_count != 1:
error_count += 1
- if linkkID & 1:
+ if linkID & 1:
self.err_orphaned_backlink(obj, attrname, val, reverse_link_name, dsdb_dn.dn)
else:
self.err_missing_backlink(obj, attrname, val, reverse_link_name, dsdb_dn.dn)