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|
%%%----------------------------------------------------------------------
%%% File : ejabberd_auth_sql.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose : Authentification via ODBC
%%% Created : 12 Dec 2004 by Alexey Shchepin <alexey@process-one.net>
%%%
%%%
%%% ejabberd, Copyright (C) 2002-2017 ProcessOne
%%%
%%% This program is free software; you can redistribute it and/or
%%% modify it under the terms of the GNU General Public License as
%%% published by the Free Software Foundation; either version 2 of the
%%% License, or (at your option) any later version.
%%%
%%% This program is distributed in the hope that it will be useful,
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
%%% General Public License for more details.
%%%
%%% You should have received a copy of the GNU General Public License along
%%% with this program; if not, write to the Free Software Foundation, Inc.,
%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
%%%
%%%----------------------------------------------------------------------
-module(ejabberd_auth_sql).
-compile([{parse_transform, ejabberd_sql_pt}]).
-author('alexey@process-one.net').
-behaviour(ejabberd_auth).
-behaviour(ejabberd_config).
-export([start/1, stop/1, set_password/3, try_register/3,
get_users/2, count_users/2, get_password/2,
remove_user/2, store_type/1, plain_password_required/1,
convert_to_scram/1, opt_type/1, export/1]).
-include("ejabberd.hrl").
-include("logger.hrl").
-include("ejabberd_sql_pt.hrl").
-include("ejabberd_auth.hrl").
-define(SALT_LENGTH, 16).
%%%----------------------------------------------------------------------
%%% API
%%%----------------------------------------------------------------------
start(_Host) -> ok.
stop(_Host) -> ok.
plain_password_required(Server) ->
store_type(Server) == scram.
store_type(Server) ->
ejabberd_auth:password_format(Server).
set_password(User, Server, Password) ->
F = fun() ->
if is_record(Password, scram) ->
set_password_scram_t(
User,
Password#scram.storedkey, Password#scram.serverkey,
Password#scram.salt, Password#scram.iterationcount);
true ->
set_password_t(User, Password)
end
end,
case ejabberd_sql:sql_transaction(Server, F) of
{atomic, _} ->
ok;
{aborted, Reason} ->
?ERROR_MSG("failed to write to SQL table: ~p", [Reason]),
{error, db_failure}
end.
try_register(User, Server, Password) ->
Res = if is_record(Password, scram) ->
add_user_scram(
Server, User,
Password#scram.storedkey, Password#scram.serverkey,
Password#scram.salt, Password#scram.iterationcount);
true ->
add_user(Server, User, Password)
end,
case Res of
{updated, 1} -> ok;
_ -> {error, exists}
end.
get_users(Server, Opts) ->
case list_users(Server, Opts) of
{selected, Res} ->
[{U, Server} || {U} <- Res];
_ -> []
end.
count_users(Server, Opts) ->
case users_number(Server, Opts) of
{selected, [{Res}]} ->
Res;
_Other -> 0
end.
get_password(User, Server) ->
case get_password_scram(Server, User) of
{selected, [{Password, <<>>, <<>>, 0}]} ->
{ok, Password};
{selected, [{StoredKey, ServerKey, Salt, IterationCount}]} ->
{ok, #scram{storedkey = StoredKey,
serverkey = ServerKey,
salt = Salt,
iterationcount = IterationCount}};
{selected, []} ->
error;
Err ->
?ERROR_MSG("Failed to read password for user ~s@~s: ~p",
[User, Server, Err]),
error
end.
remove_user(User, Server) ->
case del_user(Server, User) of
{updated, _} ->
ok;
Err ->
?ERROR_MSG("failed to delete user ~s@~s: ~p",
[User, Server, Err]),
{error, db_failure}
end.
-define(BATCH_SIZE, 1000).
set_password_scram_t(LUser,
StoredKey, ServerKey, Salt, IterationCount) ->
?SQL_UPSERT_T(
"users",
["!username=%(LUser)s",
"password=%(StoredKey)s",
"serverkey=%(ServerKey)s",
"salt=%(Salt)s",
"iterationcount=%(IterationCount)d"]).
set_password_t(LUser, Password) ->
?SQL_UPSERT_T(
"users",
["!username=%(LUser)s",
"password=%(Password)s"]).
get_password_scram(LServer, LUser) ->
ejabberd_sql:sql_query(
LServer,
?SQL("select @(password)s, @(serverkey)s, @(salt)s, @(iterationcount)d"
" from users"
" where username=%(LUser)s")).
add_user_scram(LServer, LUser,
StoredKey, ServerKey, Salt, IterationCount) ->
ejabberd_sql:sql_query(
LServer,
?SQL("insert into users(username, password, serverkey, salt, "
"iterationcount) "
"values (%(LUser)s, %(StoredKey)s, %(ServerKey)s,"
" %(Salt)s, %(IterationCount)d)")).
add_user(LServer, LUser, Password) ->
ejabberd_sql:sql_query(
LServer,
?SQL("insert into users(username, password) "
"values (%(LUser)s, %(Password)s)")).
del_user(LServer, LUser) ->
ejabberd_sql:sql_query(
LServer,
?SQL("delete from users where username=%(LUser)s")).
list_users(LServer, []) ->
ejabberd_sql:sql_query(
LServer,
?SQL("select @(username)s from users"));
list_users(LServer, [{from, Start}, {to, End}])
when is_integer(Start) and is_integer(End) ->
list_users(LServer,
[{limit, End - Start + 1}, {offset, Start - 1}]);
list_users(LServer,
[{prefix, Prefix}, {from, Start}, {to, End}])
when is_binary(Prefix) and is_integer(Start) and
is_integer(End) ->
list_users(LServer,
[{prefix, Prefix}, {limit, End - Start + 1},
{offset, Start - 1}]);
list_users(LServer, [{limit, Limit}, {offset, Offset}])
when is_integer(Limit) and is_integer(Offset) ->
ejabberd_sql:sql_query(
LServer,
?SQL("select @(username)s from users "
"order by username "
"limit %(Limit)d offset %(Offset)d"));
list_users(LServer,
[{prefix, Prefix}, {limit, Limit}, {offset, Offset}])
when is_binary(Prefix) and is_integer(Limit) and
is_integer(Offset) ->
SPrefix = ejabberd_sql:escape_like_arg_circumflex(Prefix),
SPrefix2 = <<SPrefix/binary, $%>>,
ejabberd_sql:sql_query(
LServer,
?SQL("select @(username)s from users "
"where username like %(SPrefix2)s escape '^' "
"order by username "
"limit %(Limit)d offset %(Offset)d")).
users_number(LServer) ->
ejabberd_sql:sql_query(
LServer,
fun(pgsql, _) ->
case
ejabberd_config:get_option(
{pgsql_users_number_estimate, LServer}, false) of
true ->
ejabberd_sql:sql_query_t(
?SQL("select @(reltuples :: bigint)d from pg_class"
" where oid = 'users'::regclass::oid"));
_ ->
ejabberd_sql:sql_query_t(
?SQL("select @(count(*))d from users"))
end;
(_Type, _) ->
ejabberd_sql:sql_query_t(
?SQL("select @(count(*))d from users"))
end).
users_number(LServer, [{prefix, Prefix}])
when is_binary(Prefix) ->
SPrefix = ejabberd_sql:escape_like_arg_circumflex(Prefix),
SPrefix2 = <<SPrefix/binary, $%>>,
ejabberd_sql:sql_query(
LServer,
?SQL("select @(count(*))d from users "
"where username like %(SPrefix2)s escape '^'"));
users_number(LServer, []) ->
users_number(LServer).
convert_to_scram(Server) ->
LServer = jid:nameprep(Server),
if
LServer == error;
LServer == <<>> ->
{error, {incorrect_server_name, Server}};
true ->
F = fun () ->
BatchSize = ?BATCH_SIZE,
case ejabberd_sql:sql_query_t(
?SQL("select @(username)s, @(password)s"
" from users"
" where iterationcount=0"
" limit %(BatchSize)d")) of
{selected, []} ->
ok;
{selected, Rs} ->
lists:foreach(
fun({LUser, Password}) ->
case jid:resourceprep(Password) of
error ->
?ERROR_MSG(
"SASLprep failed for "
"password of user ~s@~s",
[LUser, LServer]);
_ ->
Scram = ejabberd_auth:password_to_scram(Password),
set_password_scram_t(
LUser,
Scram#scram.storedkey,
Scram#scram.serverkey,
Scram#scram.salt,
Scram#scram.iterationcount)
end
end, Rs),
continue;
Err -> {bad_reply, Err}
end
end,
case ejabberd_sql:sql_transaction(LServer, F) of
{atomic, ok} -> ok;
{atomic, continue} -> convert_to_scram(Server);
{atomic, Error} -> {error, Error};
Error -> Error
end
end.
export(_Server) ->
[{passwd,
fun(Host, #passwd{us = {LUser, LServer}, password = Password})
when LServer == Host,
is_binary(Password) ->
[?SQL("delete from users where username=%(LUser)s;"),
?SQL("insert into users(username, password) "
"values (%(LUser)s, %(Password)s);")];
(Host, #passwd{us = {LUser, LServer}, password = #scram{} = Scram})
when LServer == Host ->
StoredKey = Scram#scram.storedkey,
ServerKey = Scram#scram.serverkey,
Salt = Scram#scram.salt,
IterationCount = Scram#scram.iterationcount,
[?SQL("delete from users where username=%(LUser)s;"),
?SQL("insert into users(username, password, serverkey, salt, "
"iterationcount) "
"values (%(LUser)s, %(StoredKey)s, %(ServerKey)s,"
" %(Salt)s, %(IterationCount)d);")];
(_Host, _R) ->
[]
end}].
-spec opt_type(pgsql_users_number_estimate) -> fun((boolean()) -> boolean());
(atom()) -> [atom()].
opt_type(pgsql_users_number_estimate) ->
fun (V) when is_boolean(V) -> V end;
opt_type(_) -> [pgsql_users_number_estimate].
|
