mirror of
https://github.com/processone/ejabberd.git
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383 lines
10 KiB
Erlang
383 lines
10 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : ejabberd_auth_internal.erl
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%%% Author : Alexey Shchepin <alexey@process-one.net>
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%%% Purpose : Authentification via mnesia
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%%% Created : 12 Dec 2004 by Alexey Shchepin <alexey@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2009 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 of the
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%%% License, or (at your option) any later version.
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%%%
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%%% This program is distributed in the hope that it will be useful,
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License
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%%% along with this program; if not, write to the Free Software
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%%% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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%%% 02111-1307 USA
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%%%
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%%%----------------------------------------------------------------------
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-module(ejabberd_auth_internal).
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-author('alexey@process-one.net').
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%% External exports
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-export([start/1,
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set_password/3,
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check_password/3,
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check_password/5,
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try_register/3,
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dirty_get_registered_users/0,
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get_vh_registered_users/1,
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get_vh_registered_users/2,
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get_vh_registered_users_number/1,
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get_vh_registered_users_number/2,
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get_password/2,
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get_password_s/2,
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is_user_exists/2,
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remove_user/2,
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remove_user/3,
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plain_password_required/0
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]).
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-include("ejabberd.hrl").
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-record(passwd, {us, password}).
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-record(reg_users_counter, {vhost, count}).
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%%%----------------------------------------------------------------------
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%%% API
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%%%----------------------------------------------------------------------
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start(Host) ->
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mnesia:create_table(passwd, [{disc_copies, [node()]},
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{attributes, record_info(fields, passwd)}]),
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mnesia:create_table(reg_users_counter,
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[{ram_copies, [node()]},
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{attributes, record_info(fields, reg_users_counter)}]),
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update_table(),
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update_reg_users_counter_table(Host),
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ok.
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update_reg_users_counter_table(Server) ->
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Set = get_vh_registered_users(Server),
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Size = length(Set),
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LServer = jlib:nameprep(Server),
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set_vh_registered_users_counter(LServer, Size).
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plain_password_required() ->
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false.
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check_password(User, Server, Password) ->
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LUser = jlib:nodeprep(User),
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LServer = jlib:nameprep(Server),
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US = {LUser, LServer},
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case catch mnesia:dirty_read({passwd, US}) of
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[#passwd{password = Password}] ->
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Password /= "";
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_ ->
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false
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end.
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check_password(User, Server, Password, Digest, DigestGen) ->
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LUser = jlib:nodeprep(User),
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LServer = jlib:nameprep(Server),
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US = {LUser, LServer},
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case catch mnesia:dirty_read({passwd, US}) of
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[#passwd{password = Passwd}] ->
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DigRes = if
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Digest /= "" ->
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Digest == DigestGen(Passwd);
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true ->
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false
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end,
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if DigRes ->
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true;
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true ->
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(Passwd == Password) and (Password /= "")
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end;
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_ ->
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false
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end.
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%% @spec (User::string(), Server::string(), Password::string()) ->
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%% ok | {error, invalid_jid}
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set_password(User, Server, Password) ->
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LUser = jlib:nodeprep(User),
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LServer = jlib:nameprep(Server),
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US = {LUser, LServer},
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if
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(LUser == error) or (LServer == error) ->
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{error, invalid_jid};
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true ->
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F = fun() ->
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mnesia:write(#passwd{us = US,
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password = Password})
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end,
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{atomic, ok} = mnesia:transaction(F),
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ok
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end.
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%% @spec (User, Server, Password) -> {atomic, ok} | {atomic, exists} | {error, invalid_jid} | {aborted, Reason}
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try_register(User, Server, Password) ->
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LUser = jlib:nodeprep(User),
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LServer = jlib:nameprep(Server),
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US = {LUser, LServer},
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if
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(LUser == error) or (LServer == error) ->
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{error, invalid_jid};
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true ->
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F = fun() ->
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case mnesia:read({passwd, US}) of
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[] ->
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mnesia:write(#passwd{us = US,
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password = Password}),
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inc_vh_registered_users_counter(LServer),
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ok;
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[_E] ->
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exists
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end
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end,
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mnesia:transaction(F)
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end.
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%% Get all registered users in Mnesia
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dirty_get_registered_users() ->
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mnesia:dirty_all_keys(passwd).
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get_vh_registered_users(Server) ->
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LServer = jlib:nameprep(Server),
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mnesia:dirty_select(
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passwd,
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[{#passwd{us = '$1', _ = '_'},
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[{'==', {element, 2, '$1'}, LServer}],
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['$1']}]).
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get_vh_registered_users(Server, [{from, Start}, {to, End}])
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when is_integer(Start) and is_integer(End) ->
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get_vh_registered_users(Server, [{limit, End-Start+1}, {offset, Start}]);
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get_vh_registered_users(Server, [{limit, Limit}, {offset, Offset}])
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when is_integer(Limit) and is_integer(Offset) ->
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case get_vh_registered_users(Server) of
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[] ->
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[];
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Users ->
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Set = lists:keysort(1, Users),
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L = length(Set),
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Start = if Offset < 1 -> 1;
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Offset > L -> L;
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true -> Offset
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end,
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lists:sublist(Set, Start, Limit)
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end;
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get_vh_registered_users(Server, [{prefix, Prefix}])
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when is_list(Prefix) ->
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Set = [{U,S} || {U, S} <- get_vh_registered_users(Server), lists:prefix(Prefix, U)],
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lists:keysort(1, Set);
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get_vh_registered_users(Server, [{prefix, Prefix}, {from, Start}, {to, End}])
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when is_list(Prefix) and is_integer(Start) and is_integer(End) ->
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get_vh_registered_users(Server, [{prefix, Prefix}, {limit, End-Start+1}, {offset, Start}]);
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get_vh_registered_users(Server, [{prefix, Prefix}, {limit, Limit}, {offset, Offset}])
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when is_list(Prefix) and is_integer(Limit) and is_integer(Offset) ->
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case [{U,S} || {U, S} <- get_vh_registered_users(Server), lists:prefix(Prefix, U)] of
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[] ->
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[];
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Users ->
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Set = lists:keysort(1, Users),
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L = length(Set),
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Start = if Offset < 1 -> 1;
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Offset > L -> L;
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true -> Offset
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end,
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lists:sublist(Set, Start, Limit)
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end;
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get_vh_registered_users(Server, _) ->
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get_vh_registered_users(Server).
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get_vh_registered_users_number(Server) ->
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LServer = jlib:nameprep(Server),
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Query = mnesia:dirty_select(
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reg_users_counter,
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[{#reg_users_counter{vhost = LServer, count = '$1'},
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[],
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['$1']}]),
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case Query of
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[Count] ->
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Count;
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_ -> 0
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end.
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get_vh_registered_users_number(Server, [{prefix, Prefix}]) when is_list(Prefix) ->
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Set = [{U, S} || {U, S} <- get_vh_registered_users(Server), lists:prefix(Prefix, U)],
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length(Set);
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get_vh_registered_users_number(Server, _) ->
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get_vh_registered_users_number(Server).
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inc_vh_registered_users_counter(LServer) ->
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F = fun() ->
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case mnesia:wread({reg_users_counter, LServer}) of
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[C] ->
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Count = C#reg_users_counter.count + 1,
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C2 = C#reg_users_counter{count = Count},
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mnesia:write(C2);
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_ ->
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mnesia:write(#reg_users_counter{vhost = LServer,
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count = 1})
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end
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end,
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mnesia:sync_dirty(F).
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dec_vh_registered_users_counter(LServer) ->
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F = fun() ->
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case mnesia:wread({reg_users_counter, LServer}) of
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[C] ->
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Count = C#reg_users_counter.count - 1,
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C2 = C#reg_users_counter{count = Count},
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mnesia:write(C2);
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_ ->
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error
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end
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end,
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mnesia:sync_dirty(F).
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set_vh_registered_users_counter(LServer, Count) ->
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F = fun() ->
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mnesia:write(#reg_users_counter{vhost = LServer,
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count = Count})
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end,
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mnesia:sync_dirty(F).
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get_password(User, Server) ->
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LUser = jlib:nodeprep(User),
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LServer = jlib:nameprep(Server),
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US = {LUser, LServer},
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case catch mnesia:dirty_read(passwd, US) of
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[#passwd{password = Password}] ->
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Password;
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_ ->
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false
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end.
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get_password_s(User, Server) ->
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LUser = jlib:nodeprep(User),
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LServer = jlib:nameprep(Server),
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US = {LUser, LServer},
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case catch mnesia:dirty_read(passwd, US) of
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[#passwd{password = Password}] ->
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Password;
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_ ->
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[]
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end.
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%% @spec (User, Server) -> true | false | {error, Error}
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is_user_exists(User, Server) ->
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LUser = jlib:nodeprep(User),
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LServer = jlib:nameprep(Server),
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US = {LUser, LServer},
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case catch mnesia:dirty_read({passwd, US}) of
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[] ->
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false;
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[_] ->
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true;
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Other ->
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{error, Other}
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end.
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%% @spec (User, Server) -> ok
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%% @doc Remove user.
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%% Note: it returns ok even if there was some problem removing the user.
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remove_user(User, Server) ->
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LUser = jlib:nodeprep(User),
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LServer = jlib:nameprep(Server),
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US = {LUser, LServer},
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F = fun() ->
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mnesia:delete({passwd, US}),
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dec_vh_registered_users_counter(LServer)
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end,
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mnesia:transaction(F),
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ok.
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%% @spec (User, Server, Password) -> ok | not_exists | not_allowed | bad_request
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%% @doc Remove user if the provided password is correct.
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remove_user(User, Server, Password) ->
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LUser = jlib:nodeprep(User),
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LServer = jlib:nameprep(Server),
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US = {LUser, LServer},
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F = fun() ->
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case mnesia:read({passwd, US}) of
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[#passwd{password = Password}] ->
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mnesia:delete({passwd, US}),
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dec_vh_registered_users_counter(LServer),
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ok;
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[_] ->
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not_allowed;
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_ ->
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not_exists
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end
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end,
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case mnesia:transaction(F) of
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{atomic, ok} ->
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ok;
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{atomic, Res} ->
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Res;
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_ ->
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bad_request
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end.
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update_table() ->
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Fields = record_info(fields, passwd),
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case mnesia:table_info(passwd, attributes) of
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Fields ->
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ok;
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[user, password] ->
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?INFO_MSG("Converting passwd table from "
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"{user, password} format", []),
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Host = ?MYNAME,
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{atomic, ok} = mnesia:create_table(
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ejabberd_auth_internal_tmp_table,
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[{disc_only_copies, [node()]},
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{type, bag},
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{local_content, true},
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{record_name, passwd},
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{attributes, record_info(fields, passwd)}]),
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mnesia:transform_table(passwd, ignore, Fields),
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F1 = fun() ->
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mnesia:write_lock_table(ejabberd_auth_internal_tmp_table),
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mnesia:foldl(
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fun(#passwd{us = U} = R, _) ->
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mnesia:dirty_write(
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ejabberd_auth_internal_tmp_table,
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R#passwd{us = {U, Host}})
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end, ok, passwd)
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end,
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mnesia:transaction(F1),
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mnesia:clear_table(passwd),
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F2 = fun() ->
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mnesia:write_lock_table(passwd),
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mnesia:foldl(
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fun(R, _) ->
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mnesia:dirty_write(R)
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end, ok, ejabberd_auth_internal_tmp_table)
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end,
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mnesia:transaction(F2),
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mnesia:delete_table(ejabberd_auth_internal_tmp_table);
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_ ->
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?INFO_MSG("Recreating passwd table", []),
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mnesia:transform_table(passwd, ignore, Fields)
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end.
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