implement email login

in php sprintf, %1$s means the first argument

http://stackoverflow.com/questions/7674058/sprintf-repeating-arguments

start.sh

@@ -79,7 +79,7 @@ ldapConfig=$(cat <<EOF
     "Enabled"       : true,
     "CachePW"       : false,
     "URI"           : "ldap://${LDAP_SERVER}:${LDAP_PORT}/${LDAP_USERS_BASE_DN}",
-    "Filter"        : "(&(objectClass=user)(username=%s))",
+    "Filter"        : "(|(email=%1\$s)(username=%1\$s))",
     "NameAttr"      : "displayname",
     "SecName"       : "",
     "UidAttr"       : "uid",
@@ -88,7 +88,7 @@ ldapConfig=$(cat <<EOF
     "Groups"        : { "administrator" : "cn=admins,${LDAP_GROUPS_BASE_DN}" },
     "Debug"         : false,
     "GroupAttr"     : "memberof",
-    "GroupFilter"   : "(&(objectClass=user)(username=%s))",
+    "GroupFilter"   : "(|(email=%1\$s)(username=%1\$s))",
     "DefaultRole"   : "editor",
     "GroupEnable"   : true,
     "GroupOverUser" : true,