| 1 | #!/usr/bin/python
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| 2 | # vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
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| 3 |
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| 4 | import argparse
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| 5 | import ConfigParser
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| 6 | import datetime
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| 7 | import dateutil.parser
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| 8 | import dateutil.tz
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| 9 | import ldap
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| 10 | import ldap.modlist
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| 11 | import ldif
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| 12 | import logging
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| 13 | import os
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| 14 | import sys
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| 15 |
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| 16 | def getArguments():
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| 17 | configfile = '/etc/dassldapsync.conf'
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| 18 | parser = argparse.ArgumentParser(description='Synchronize the content of two LDAP servers.' )
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| 19 | parser.add_argument('-d', '--debug', action='store_true', help="enable debug output")
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| 20 | parser.add_argument('configfile', default=configfile, help="Configuration file [default: {}]".format(configfile))
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| 21 | args = parser.parse_args()
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| 22 | return args
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| 23 |
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| 24 |
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| 25 | class Options:
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| 26 | def __init__(self):
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| 27 | self.delete=True
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| 28 | self.starttls=False
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| 29 | self.updateonly=False
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| 30 | self.filter=None
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| 31 | self.attrfilter=None
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| 32 | self.exclude=None
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| 33 | self.renameattr=None
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| 34 | self.renamecommand=None
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| 35 | self.pwd_max_days=0
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| 36 |
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| 37 | class ConfigParserDefaults(ConfigParser.ConfigParser, object):
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| 38 | def get(self, section, option, default = None):
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| 39 | try:
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| 40 | result = super(self.__class__, self).get(section, option)
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| 41 | except ConfigParser.NoOptionError:
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| 42 | if default is None:
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| 43 | raise
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| 44 | else:
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| 45 | result = default
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| 46 | return result
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| 47 |
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| 48 | def get0(self, section, option, default = None):
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| 49 | try:
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| 50 | result = super(self.__class__, self).get(section, option)
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| 51 | except ConfigParser.NoOptionError:
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| 52 | result = default
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| 53 | return result
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| 54 |
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| 55 | def getboolean(self, section, option, default = None):
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| 56 | try:
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| 57 | result = super(self.__class__, self).getboolean(section, option)
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| 58 | except ConfigParser.NoOptionError:
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| 59 | if default is None:
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| 60 | raise
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| 61 | else:
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| 62 | result = default
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| 63 | return result
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| 64 |
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| 65 | def readLDIFSource(path):
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| 66 | logger = logging.getLogger()
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| 67 | logger.info("reading LDAP objects from file {}".format(path))
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| 68 | with open(path,'r') as f:
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| 69 | parser = ldif.LDIFRecordList(f)
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| 70 | parser.parse()
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| 71 | result = parser.all_records
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| 72 | return result
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| 73 |
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| 74 | def readLdapSource(server,binddn,bindpw,basedn,filter,attrs=None,starttls=False):
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| 75 | logger = logging.getLogger()
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| 76 | logger.info("reading LDAP objects from server {}".format(server))
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| 77 | con = ldap.open(server,port=389)
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| 78 | if starttls:
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| 79 | con.start_tls_s()
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| 80 | con.simple_bind_s(binddn,bindpw)
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| 81 | results=con.search_s(basedn,ldap.SCOPE_SUBTREE,filter,attrs)
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| 82 | return results
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| 83 |
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| 84 | class LdapSync(object):
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| 85 | def __init__(self, destserver,destbinddn,destbindpw,srcbasedn,destbasedn,options=Options()):
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| 86 | self.logger = logging.getLogger()
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| 87 |
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| 88 | self.destserver = destserver
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| 89 | self.destbasedn = destbasedn
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| 90 | self.destbinddn = destbinddn
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| 91 | self.destbindpw = destbindpw
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| 92 | self.options = options
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| 93 |
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| 94 | self.srcbasedn = srcbasedn
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| 95 |
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| 96 | self.con = None
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| 97 |
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| 98 | self.attrmap=ldap.cidict.cidict({})
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| 99 | self.classmap={}
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| 100 |
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| 101 | self.junk_attrs = [ "memberof", "modifiersname", "modifytimestamp", "entryuuid", "entrycsn", "contextcsn", "creatorsname", "createtimestamp", "structuralobjectclass", "pwdchangedtime", "pwdfailuretime" ]
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| 102 |
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| 103 | def __ldap_connect(self):
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| 104 | if self.con is None:
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| 105 | self.logger.info("connect to destination LDAP server {}".format(self.destserver))
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| 106 | self.con = ldap.open(self.destserver,port=389)
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| 107 | if self.options.starttls:
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| 108 | self.con.start_tls_s()
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| 109 | self.con.simple_bind_s(self.destbinddn,self.destbindpw)
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| 110 |
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| 111 | def __adapt_dn(self, dn):
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| 112 | # move LDAP object to dest base
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| 113 | if self.srcbasedn != self.destbasedn:
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| 114 | dn_old = dn
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| 115 | rpath = dn[:-len(srcbasedn)]
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| 116 | dn=rpath+self.destbasedn
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| 117 | self.logger.debug("moved {} to {}".format(dn_old, dn))
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| 118 | # print "dn:",dn,"src:",srcbasedn,"rpath:",rpath,"dest:",destbasedn
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| 119 | return dn
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| 120 |
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| 121 | def __is_dn_included(self, dn):
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| 122 | if self.options.exclude is None:
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| 123 | return True
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| 124 | if dn.lower().endswith(self.options.exclude):
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| 125 | return False
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| 126 | return True
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| 127 |
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| 128 | def __adapt_source_ldap_objects(self, searchresult):
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| 129 | """
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| 130 | Do configured modification to the source LDAP objects.
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| 131 | """
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| 132 | self.logger.debug("modifying LDAP objects retrieved from source LDAP")
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| 133 |
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| 134 | update_objects=[]
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| 135 |
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| 136 | for r in searchresult:
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| 137 | dn = self.__adapt_dn(r[0])
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| 138 | d=ldap.cidict.cidict(r[1])
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| 139 |
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| 140 | if self.__is_dn_included(dn):
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| 141 | objectclasses=d["objectclass"]
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| 142 |
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| 143 | newObjectclasses=[]
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| 144 | for o in objectclasses:
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| 145 | if o.lower() in self.classmap:
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| 146 | new_oc = self.classmap[o.lower()]
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| 147 | if not new_oc in newObjectclasses:
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| 148 | newObjectclasses.append(new_oc)
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| 149 | else:
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| 150 | #pass
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| 151 | if not o in newObjectclasses:
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| 152 | newObjectclasses.append(o)
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| 153 |
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| 154 | d["objectclass"]=newObjectclasses
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| 155 |
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| 156 | for a in d.keys():
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| 157 | attr=a
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| 158 | if self.attrmap.has_key(a.lower()):
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| 159 | attr=self.attrmap[attr].lower()
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| 160 | if attr.lower()!=a.lower():
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| 161 | # print "# ",a," -> ",attr
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| 162 | values=d[a]
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| 163 | del d[a]
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| 164 | d[attr]=values
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| 165 |
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| 166 | update_objects.append((dn,d))
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| 167 | return update_objects
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| 168 |
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| 169 |
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| 170 | def __get_dest_entry(self, dn, entry):
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| 171 | """
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| 172 | In the destination LDAP, the objects should be named
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| 173 | according to options.renameattr.
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| 174 | """
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| 175 | existingDestDn = None
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| 176 | existingDestEntry = None
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| 177 | if self.options.renameattr and entry.has_key(self.options.renameattr):
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| 178 | searchresult = self.con.search_s(self.destbasedn,ldap.SCOPE_SUB,"%s=%s" % (self.options.renameattr,entry[self.options.renameattr][0]))
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| 179 | if searchresult != None and len(searchresult)>0:
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| 180 | existingDestDn, existingDestEntry = searchresult[0]
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| 181 | if existingDestDn.lower() != dn.lower():
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| 182 | self.con.modrdn_s(existingDestDn,dn)
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| 183 | notify_renamed(existingDestDn, dn, existingDestEntry[self.options.renameattr][0],entry[self.options.renameattr][0],options)
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| 184 | if existingDestDn is None:
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| 185 | searchresult=self.con.search_s(dn,ldap.SCOPE_BASE,"objectclass=*")
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| 186 | existingDestDn, existingDestEntry = searchresult[0]
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| 187 | return (existingDestDn, existingDestEntry)
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| 188 |
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| 189 |
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| 190 | def __handle_pwdAccountLockedTime(self, dn, entry, now, max_age):
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| 191 | # hack for syncing accounts locked by password policy
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| 192 | do_unlock = False
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| 193 | if self.options.pwd_max_days>0 and entry.has_key('pwdChangedTime'):
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| 194 | # print "pwdChangedTime set for",dn
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| 195 | pwdChange = entry['pwdChangedTime'][0]
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| 196 | d = dateutil.parser.parse(pwdChange)
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| 197 | if (now-d)>max_age:
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| 198 | entry['pwdAccountLockedTime']=['000001010000Z']
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| 199 | self.logger.info( "locking {} {}".format(dn, pwdChange))
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| 200 | else:
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| 201 | # pwdAccountLockedTime is a operational attribute,
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| 202 | # and therefore not part of entry.
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| 203 | # Do extra search to retrieve attribute.
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| 204 | searchresult = self.con.search_s(dn,ldap.SCOPE_BASE,"objectclass=*", \
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| 205 | attrlist = ['pwdAccountLockedTime'])
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| 206 | tmp_dn, tmp_entry = searchresult[0]
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| 207 | if tmp_entry.has_key('pwdAccountLockedTime'):
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| 208 | do_unlock = True
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| 209 | return do_unlock
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| 210 |
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| 211 |
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| 212 |
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| 213 | def __syncLdapDestination(self, update_objects):
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| 214 |
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| 215 | result = {
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| 216 | 'add': { 'ok': [], 'failed': [] },
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| 217 | 'update': { 'ok': [], 'failed': [] },
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| 218 | }
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| 219 |
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| 220 | tzutc = dateutil.tz.gettz('UTC')
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| 221 | now = datetime.datetime.now(tzutc)
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| 222 | max_age = datetime.timedelta(days=self.options.pwd_max_days)
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| 223 |
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| 224 | logger.debug("writing data to destination LDAP")
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| 225 | for o in update_objects:
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| 226 | dn,entry=o
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| 227 | #logger.debug(dn)
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| 228 | try:
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| 229 | destDn,destEntry=self.__get_dest_entry(dn, entry)
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| 230 |
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| 231 | # hack for syncing accounts locked by password policy
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| 232 | do_unlock = self.__handle_pwdAccountLockedTime(dn, entry, now, max_age)
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| 233 |
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| 234 | mod_attrs=ldap.modlist.modifyModlist(destEntry,entry)
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| 235 |
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| 236 | # hack for unlocking, see above
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| 237 | if do_unlock:
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| 238 | self.logger.info( "unlocking {} {}".format(dn,pwdChange))
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| 239 | mod_attrs.append( (ldap.MOD_DELETE,'pwdAccountLockedTime',None) )
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| 240 |
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| 241 | if self.options.attrfilter is not None:
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| 242 | mod_attrs=[ a for a in mod_attrs if a[1].lower() in options.attrfilter]
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| 243 |
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| 244 | if self.junk_attrs is not None:
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| 245 | mod_attrs=[ a for a in mod_attrs if a[1].lower() not in self.junk_attrs]
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| 246 |
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| 247 | if mod_attrs:
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| 248 | try:
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| 249 | self.con.modify_s(dn,mod_attrs)
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| 250 | result['update']['ok'].append(dn)
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| 251 | self.notify_modified(dn)
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| 252 | except:
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| 253 | self.logger.error("failed to modify {} ({})".format(dn,mod_attrs))
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| 254 | result['update']['failed'].append(dn)
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| 255 |
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| 256 | except ldap.NO_SUCH_OBJECT:
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| 257 | if options.updateonly==True:
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| 258 | continue
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| 259 |
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| 260 | try:
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| 261 | self.con.add_s(dn,ldap.modlist.addModlist(entry,self.junk_attrs))
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| 262 | self.notify_created(dn)
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| 263 | result['add']['ok'].append(dn)
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| 264 | except (ldap.OBJECT_CLASS_VIOLATION, ldap.NO_SUCH_OBJECT, ldap.CONSTRAINT_VIOLATION):
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| 265 | self.logger.warning("failed to add {}".format(dn))
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| 266 | result['add']['failed'].append(dn)
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| 267 | return result
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| 268 |
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| 269 |
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| 270 | def __deleteDestLdapObjects(self, update_objects):
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| 271 | """
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| 272 | Remove all LDAP objects in destination LDAP server
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| 273 | that did not come from the source LDAP objects
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| 274 | and are not excluded.
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| 275 | """
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| 276 |
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| 277 | result = {
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| 278 | 'delete': { 'ok': [], 'failed': [] },
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| 279 | }
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| 280 |
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| 281 | searchresult=self.con.search_s(self.destbasedn,ldap.SCOPE_SUBTREE,self.options.filter)
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| 282 | existing=[ x[0].lower() for x in searchresult ]
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| 283 |
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| 284 | morituri=existing
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| 285 |
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| 286 | if self.destbasedn.lower() in existing:
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| 287 | morituri.remove(self.destbasedn.lower())
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| 288 |
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| 289 | for o in update_objects:
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| 290 | dn,entry=o
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| 291 | if dn.lower() in existing:
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| 292 | morituri.remove(dn.lower())
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| 293 | for dn in morituri:
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| 294 | if self.__is_dn_included(dn):
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| 295 | try:
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| 296 | self.con.delete_s(dn)
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| 297 | self.notify_deleted(dn)
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| 298 | result['delete']['ok'].append(dn)
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| 299 | except:
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| 300 | self.logger.error("failed to delete {}".format(dn))
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| 301 | result['delete']['failed'].append(dn)
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| 302 | return result
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| 303 |
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| 304 |
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| 305 | def sync(self, searchresult):
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| 306 | """
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| 307 | Synchronize entries from searchresult to destination LDAP server.
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| 308 | """
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| 309 | result = {
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| 310 | 'add': { 'ok': [], 'failed': [] },
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| 311 | 'update': { 'ok': [], 'failed': [] },
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| 312 | 'delete': { 'ok': [], 'failed': [] },
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| 313 | }
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| 314 |
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| 315 | if len(searchresult)==0:
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| 316 | self.logger.error("empty source, aborting")
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| 317 | return
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| 318 |
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| 319 | self.__ldap_connect()
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| 320 |
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| 321 | update_objects = self.__adapt_source_ldap_objects(searchresult)
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| 322 | result = self.__syncLdapDestination(update_objects)
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| 323 | if self.options.delete==True and self.options.updateonly==False:
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| 324 | result.update(self.__deleteDestLdapObjects(update_objects))
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| 325 | self.con.unbind()
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| 326 |
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| 327 | self.__log_summary(result, True)
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| 328 |
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| 329 |
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| 330 |
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| 331 | def __log_summary(self, result, show_failed = True, show_ok = False):
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| 332 | for action in result.keys():
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| 333 | ok = len(result[action]['ok'])
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| 334 | failed = len(result[action]['failed'])
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| 335 | print "{} (ok: {}, failed: {}):".format(action, ok, failed)
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| 336 |
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| 337 | if show_ok and ok > 0:
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| 338 | print "succeeded:"
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| 339 | print "\n".join(result[action]['ok'])
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| 340 |
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| 341 | if show_failed and failed > 0:
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| 342 | print "failed:"
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| 343 | print "\n".join(result[action]['failed'])
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| 344 |
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| 345 |
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| 346 | def notify_created(self, dn):
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| 347 | print "created",dn
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| 348 |
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| 349 | def notify_modified(self, dn):
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| 350 | print "modified",dn
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| 351 |
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| 352 | def notify_deleted(self, dn):
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| 353 | print "deleted",dn
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| 354 |
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| 355 | def notify_renamed(self, dn, newdn, uid, newuid, options):
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| 356 | print "renamed",dn,newdn
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| 357 | subprocess.check_call("%s %s %s %s %s" % (options.renamecommand,dn,newdn,uid,newuid),shell=True)
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| 358 |
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| 359 |
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| 360 | if __name__ == "__main__":
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| 361 | logging.basicConfig(format='%(levelname)s %(module)s.%(funcName)s: %(message)s', level=logging.INFO)
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| 362 | logger = logging.getLogger()
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| 363 |
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| 364 | args=getArguments()
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| 365 | if args.debug:
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| 366 | logger.setLevel(logging.DEBUG)
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| 367 | conffile=args.configfile
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| 368 |
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| 369 | exclude = None
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| 370 |
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| 371 | config=ConfigParserDefaults()
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| 372 | config.read(conffile)
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| 373 |
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| 374 | srcfile = None
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| 375 | try:
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| 376 | srcfile = config.get("source","file")
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| 377 | except:
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| 378 | pass
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| 379 |
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| 380 | basedn = config.get("source","baseDn")
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| 381 | filter = config.get0("source","filter", None)
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| 382 | attrs = config.get0("source", "attributes", None)
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| 383 |
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| 384 | if srcfile==None:
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| 385 | srv = config.get("source","server")
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| 386 | admindn = config.get("source","bindDn")
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| 387 | adminpw = config.get("source","bindPassword")
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| 388 | starttls = config.getboolean("source","starttls")
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| 389 |
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| 390 | destsrv = config.get("destination","server")
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| 391 | destadmindn = config.get("destination","bindDn")
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| 392 | destadminpw = config.get("destination","bindPassword")
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| 393 | destbasedn = config.get("destination","baseDn")
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| 394 | destdelete = config.getboolean("destination","delete")
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| 395 | try:
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| 396 | rdn = config.get("destination","rdn")
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| 397 | logger.warning("setting rdn is currently ignored")
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| 398 | except:
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| 399 | pass
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| 400 |
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| 401 | options = Options()
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| 402 | try:
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| 403 | options.exclude = config.get("destination","excludesubtree").lower()
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| 404 | except:
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| 405 | pass
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| 406 |
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| 407 | options.updateonly = not config.getboolean("destination","create", False)
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| 408 | options.starttls = config.getboolean("destination","starttls", False)
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|---|
| 409 | options.renameattr = config.get0("destination","detectRename", None)
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|---|
| 410 | options.renamecommand = config.get0("destination","detectRename", None)
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|---|
| 411 | options.pwd_max_days = int(config.get("source","pwd_max_days",0))
|
|---|
| 412 | options.filter = filter
|
|---|
| 413 |
|
|---|
| 414 |
|
|---|
| 415 | try:
|
|---|
| 416 | options.attrfilter = config.get("destination","attributes").split(",")
|
|---|
| 417 | except:
|
|---|
| 418 | options.attrfilter = None
|
|---|
| 419 |
|
|---|
| 420 | if srcfile:
|
|---|
| 421 | objects = readLDIFSource(srcfile)
|
|---|
| 422 | else:
|
|---|
| 423 | objects = readLdapSource(srv,admindn,adminpw,basedn,filter,attrs,starttls)
|
|---|
| 424 |
|
|---|
| 425 | ldapsync = LdapSync(destsrv,destadmindn,destadminpw,basedn,destbasedn,options)
|
|---|
| 426 | ldapsync.sync(objects)
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