369 lines
9.5 KiB
Erlang
369 lines
9.5 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : ejabberd_auth_odbc.erl
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%%% Author : Alexey Shchepin <alexey@process-one.net>
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%%% Purpose : Authentification via ODBC (obsolete)
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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) 2002-2010 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_odbc).
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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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stop/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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%%%----------------------------------------------------------------------
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%%% API
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%%%----------------------------------------------------------------------
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%% @spec (Host) -> ok
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%% Host = string()
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start(Host) ->
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case ejabberd_odbc:running(Host) of
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true -> ok;
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false -> ejabberd_rdbms:start_odbc(Host)
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end.
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stop(Host) ->
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ejabberd_rdbms:stop_odbc(Host).
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%% @spec () -> bool()
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plain_password_required() ->
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false.
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%% @spec (User, Server, Password) -> bool()
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%% User = string()
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%% Server = string()
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%% Password = string()
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check_password(User, Server, Password) ->
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try
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LUser = exmpp_stringprep:nodeprep(User),
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Username = ejabberd_odbc:escape(LUser),
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LServer = exmpp_stringprep:nameprep(Server),
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try odbc_queries:get_password(LServer, Username) of
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{selected, ["password"], [{Password}]} ->
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Password /= ""; %% Password is correct, and not empty
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{selected, ["password"], [{_Password2}]} ->
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false; %% Password is not correct
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{selected, ["password"], []} ->
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false; %% Account does not exist
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{error, _Error} ->
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false %% Typical error is that table doesn't exist
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catch
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_:_ ->
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false %% Typical error is database not accessible
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end
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catch
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_ ->
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false
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end.
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%% @spec (User, Server, Password, Digest, DigestGen) -> bool()
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%% User = string()
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%% Server = string()
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%% Password = string()
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%% Digest = string()
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%% DigestGen = function()
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check_password(User, Server, Password, Digest, DigestGen) ->
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try
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LUser = exmpp_stringprep:nodeprep(User),
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Username = ejabberd_odbc:escape(LUser),
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LServer = exmpp_stringprep:nameprep(Server),
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try odbc_queries:get_password(LServer, Username) of
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%% Account exists, check if password is valid
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{selected, ["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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{selected, ["password"], []} ->
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false; %% Account does not exist
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{error, _Error} ->
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false %% Typical error is that table doesn't exist
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catch
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_:_ ->
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false %% Typical error is database not accessible
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end
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catch
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_ ->
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false
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end.
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%% @spec (User, Server, Password) -> ok | {error, invalid_jid}
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%% User = string()
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%% Server = string()
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%% Password = string()
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set_password(User, Server, Password) ->
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try
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LUser = exmpp_stringprep:nodeprep(User),
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Username = ejabberd_odbc:escape(LUser),
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Pass = ejabberd_odbc:escape(Password),
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LServer = exmpp_stringprep:nameprep(Server),
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case catch odbc_queries:set_password_t(LServer, Username, Pass) of
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{atomic, ok} -> ok;
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Other -> {error, Other}
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end
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catch
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_ ->
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{error, invalid_jid}
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end.
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%% @spec (User, Server, Password) -> {atomic, ok} | {atomic, exists} | {error, invalid_jid}
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%% User = string()
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%% Server = string()
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%% Password = string()
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try_register(User, Server, Password) ->
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try
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LUser = exmpp_stringprep:nodeprep(User),
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Username = ejabberd_odbc:escape(LUser),
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Pass = ejabberd_odbc:escape(Password),
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LServer = exmpp_stringprep:nameprep(Server),
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case catch odbc_queries:add_user(LServer, Username, Pass) of
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{updated, 1} ->
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{atomic, ok};
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_ ->
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{atomic, exists}
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end
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catch
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_ ->
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{error, invalid_jid}
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end.
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%% @spec () -> [{LUser, LServer}]
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%% LUser = string()
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%% LServer = string()
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dirty_get_registered_users() ->
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Servers = ejabberd_config:get_vh_by_auth_method(odbc),
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lists:flatmap(
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fun(Server) ->
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get_vh_registered_users(Server)
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end, Servers).
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%% @spec (Server) -> [{LUser, LServer}]
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%% Server = string()
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%% LUser = string()
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%% LServer = string()
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get_vh_registered_users(Server) ->
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LServer = exmpp_stringprep:nameprep(Server),
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case catch odbc_queries:list_users(LServer) of
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{selected, ["username"], Res} ->
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[{U, LServer} || {U} <- Res];
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_ ->
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[]
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end.
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%% @spec (Server, Opts) -> [{LUser, LServer}]
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%% Server = string()
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%% Opts = [{Opt, Val}]
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%% Opt = atom()
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%% Val = term()
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%% LUser = string()
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%% LServer = string()
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get_vh_registered_users(Server, Opts) ->
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LServer = exmpp_stringprep:nameprep(Server),
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case catch odbc_queries:list_users(LServer, Opts) of
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{selected, ["username"], Res} ->
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[{U, LServer} || {U} <- Res];
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_ ->
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[]
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end.
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%% @spec (Server) -> Users_Number
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%% Server = string()
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%% Users_Number = integer()
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get_vh_registered_users_number(Server) ->
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LServer = exmpp_stringprep:nameprep(Server),
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case catch odbc_queries:users_number(LServer) of
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{selected, [_], [{Res}]} ->
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list_to_integer(Res);
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_ ->
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0
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end.
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%% @spec (Server, Opts) -> Users_Number
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%% Server = string()
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%% Opts = [{Opt, Val}]
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%% Opt = atom()
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%% Val = term()
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%% Users_Number = integer()
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get_vh_registered_users_number(Server, Opts) ->
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LServer = exmpp_stringprep:nameprep(Server),
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case catch odbc_queries:users_number(LServer, Opts) of
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{selected, [_], [{Res}]} ->
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list_to_integer(Res);
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_Other ->
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0
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end.
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%% @spec (User, Server) -> Password | false
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%% User = string()
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%% Server = string()
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%% Password = string()
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get_password(User, Server) ->
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try
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LUser = exmpp_stringprep:nodeprep(User),
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Username = ejabberd_odbc:escape(LUser),
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LServer = exmpp_stringprep:nameprep(Server),
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case catch odbc_queries:get_password(LServer, Username) of
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{selected, ["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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catch
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_ ->
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false
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end.
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%% @spec (User, Server) -> Password | nil()
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%% User = string()
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%% Server = string()
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%% Password = string()
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get_password_s(User, Server) ->
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try
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LUser = exmpp_stringprep:nodeprep(User),
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Username = ejabberd_odbc:escape(LUser),
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LServer = exmpp_stringprep:nameprep(Server),
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case catch odbc_queries:get_password(LServer, Username) of
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{selected, ["password"], [{Password}]} ->
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Password;
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_ ->
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""
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end
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catch
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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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%% User = string()
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%% Server = string()
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is_user_exists(User, Server) ->
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try
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LUser = exmpp_stringprep:nodeprep(User),
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Username = ejabberd_odbc:escape(LUser),
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LServer = exmpp_stringprep:nameprep(Server),
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try odbc_queries:get_password(LServer, Username) of
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{selected, ["password"], [{_Password}]} ->
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true; %% Account exists
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{selected, ["password"], []} ->
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false; %% Account does not exist
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{error, Error} ->
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{error, Error} %% Typical error is that table doesn't exist
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catch
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_:B ->
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{error, B} %% Typical error is database not accessible
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end
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catch
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_ ->
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false
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end.
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%% @spec (User, Server) -> ok | error
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%% User = string()
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%% Server = string()
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%% @doc Remove user.
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%% Note: it may return ok even if there was some problem removing the user.
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remove_user(User, Server) ->
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try
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LUser = exmpp_stringprep:nodeprep(User),
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Username = ejabberd_odbc:escape(LUser),
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LServer = exmpp_stringprep:nameprep(Server),
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catch odbc_queries:del_user(LServer, Username),
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ok
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catch
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_ ->
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error
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end.
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%% @spec (User, Server, Password) -> ok | error | not_exists | not_allowed
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%% User = string()
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%% Server = string()
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%% Password = string()
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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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try
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LUser = exmpp_stringprep:nodeprep(User),
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Username = ejabberd_odbc:escape(LUser),
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Pass = ejabberd_odbc:escape(Password),
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LServer = exmpp_stringprep:nameprep(Server),
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F = fun() ->
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Result = odbc_queries:del_user_return_password(
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LServer, Username, Pass),
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case Result of
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{selected, ["password"], [{Password}]} ->
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ok;
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{selected, ["password"], []} ->
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not_exists;
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_ ->
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not_allowed
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end
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end,
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{atomic, Result} = odbc_queries:sql_transaction(LServer, F),
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Result
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catch
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_ ->
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error
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end.
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