Create a user for Windows PassSync and grant password changing permissions

This does 3 things:
1. Create a user for the Windows PassSync service
2. Add this use to the list of users that can skip password policies
3. Add an aci that grants permission to write the password attributes

471130

1 files changed, 38 insertions, 0 deletions

diff --git a/ipa-server/ipaserver/replication.py b/ipa-server/ipaserver/replication.py
index 86d1f5f92..0a8ef9f6b 100644
--- a/ipa-server/ipaserver/replication.py
+++ b/ipa-server/ipaserver/replication.py
@@ -246,6 +246,43 @@ class ReplicationManager:
         chainbe = self.setup_chaining_backend(other_conn)
         self.enable_chain_on_update(chainbe)
 
+    def add_passsync_user(self, conn, password):
+        pass_dn = "uid=passsync,cn=sysaccounts,cn=etc,%s" % self.suffix
+        print "The user for the Windows PassSync service is %s" % pass_dn
+        try:
+            conn.getEntry(pass_dn, ldap.SCOPE_BASE)
+            print "Windows PassSync entry exists, not resetting password"
+            return
+        except ipaerror.exception_for(ipaerror.LDAP_NOT_FOUND):
+            pass
+
+        # The user doesn't exist, add it
+        entry = ipaldap.Entry(pass_dn)
+        entry.setValues("objectclass", ["account", "simplesecurityobject"])
+        entry.setValues("uid", "passsync")
+        entry.setValues("userPassword", password)
+        conn.add_s(entry)
+
+        # Add it to the list of users allowed to bypass password policy
+        extop_dn = "cn=ipa_pwd_extop,cn=plugins,cn=config"
+        entry = conn.getEntry(extop_dn, ldap.SCOPE_BASE)
+        pass_mgrs = entry.getValues('passSyncManagersDNs')
+        if not pass_mgrs:
+            pass_mgrs = []
+        if not isinstance(pass_mgrs, list):
+            pass_mgrs = [pass_mgrs]
+        pass_mgrs.append(pass_dn)
+        mod = [(ldap.MOD_REPLACE, 'passSyncManagersDNs', pass_mgrs)]
+        conn.modify_s(extop_dn, mod)
+
+        # And finally grant it permission to write passwords
+        mod = [(ldap.MOD_ADD, 'aci',
+            ['(targetattr = "userPassword || krbPrincipalKey || sambaLMPassword || sambaNTPassword || passwordHistory")(version 3.0; acl "Windows PassSync service can write passwords"; allow (write) userdn="ldap:///%s";)' % pass_dn])]
+        try:
+            conn.modify_s(self.suffix, mod)
+        except ldap.TYPE_OR_VALUE_EXISTS:
+            logging.debug("passsync aci already exists in suffix %s on %s" % (self.suffix, conn.host))
+
     def setup_winsync_agmt(self, entry, **kargs):
         entry.setValues("objectclass", "nsDSWindowsReplicationAgreement")
         entry.setValues("nsds7WindowsReplicaSubtree",
@@ -407,6 +444,7 @@ class ReplicationManager:
             self.setup_agreement(self.conn, other_conn)
             return self.start_replication(other_conn)
         else:
+            self.add_passsync_user(self.conn, kargs.get("passsync"))
             self.setup_agreement(self.conn, other_conn, **kargs)
             return self.start_replication(self.conn, other_conn)