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%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 14 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(mod_roster_sql).
-behaviour(mod_roster).
%% API
-export([init/2, read_roster_version/2, write_roster_version/4,
get_roster/2, get_roster_by_jid/3,
roster_subscribe/4, get_roster_by_jid_with_groups/3,
remove_user/2, update_roster/4, del_roster/3, transaction/2,
read_subscription_and_groups/3, get_only_items/2,
import/1, import/2, export/1]).
-include("jlib.hrl").
-include("mod_roster.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
ok.
read_roster_version(LUser, LServer) ->
case odbc_queries:get_roster_version(LServer, LUser) of
{selected, [{Version}]} -> Version;
{selected, []} -> error
end.
write_roster_version(LUser, LServer, InTransaction, Ver) ->
Username = ejabberd_odbc:escape(LUser),
EVer = ejabberd_odbc:escape(Ver),
if InTransaction ->
odbc_queries:set_roster_version(Username, EVer);
true ->
odbc_queries:sql_transaction(
LServer,
fun () ->
odbc_queries:set_roster_version(Username, EVer)
end)
end.
get_roster(LUser, LServer) ->
case catch odbc_queries:get_roster(LServer, LUser) of
{selected, Items} when is_list(Items) ->
JIDGroups = case catch odbc_queries:get_roster_jid_groups(
LServer, LUser) of
{selected, JGrps} when is_list(JGrps) ->
JGrps;
_ ->
[]
end,
GroupsDict = lists:foldl(fun({J, G}, Acc) ->
dict:append(J, G, Acc)
end,
dict:new(), JIDGroups),
lists:flatmap(
fun(I) ->
case raw_to_record(LServer, I) of
%% Bad JID in database:
error -> [];
R ->
SJID = jid:to_string(R#roster.jid),
Groups = case dict:find(SJID, GroupsDict) of
{ok, Gs} -> Gs;
error -> []
end,
[R#roster{groups = Groups}]
end
end, Items);
_ ->
[]
end.
get_roster_by_jid(LUser, LServer, LJID) ->
{selected, Res} =
odbc_queries:get_roster_by_jid(LServer, LUser, jid:to_string(LJID)),
case Res of
[] ->
#roster{usj = {LUser, LServer, LJID},
us = {LUser, LServer}, jid = LJID};
[I] ->
R = raw_to_record(LServer, I),
case R of
%% Bad JID in database:
error ->
#roster{usj = {LUser, LServer, LJID},
us = {LUser, LServer}, jid = LJID};
_ ->
R#roster{usj = {LUser, LServer, LJID},
us = {LUser, LServer}, jid = LJID, name = <<"">>}
end
end.
get_only_items(LUser, LServer) ->
case catch odbc_queries:get_roster(LServer, LUser) of
{selected, Is} when is_list(Is) ->
lists:map(fun(I) -> raw_to_record(LServer, I) end, Is);
_ -> []
end.
roster_subscribe(_LUser, _LServer, _LJID, Item) ->
ItemVals = record_to_row(Item),
odbc_queries:roster_subscribe(ItemVals).
transaction(LServer, F) ->
ejabberd_odbc:sql_transaction(LServer, F).
get_roster_by_jid_with_groups(LUser, LServer, LJID) ->
SJID = jid:to_string(LJID),
case odbc_queries:get_roster_by_jid(LServer, LUser, SJID) of
{selected, [I]} ->
R = raw_to_record(LServer, I),
Groups =
case odbc_queries:get_roster_groups(LServer, LUser, SJID) of
{selected, JGrps} when is_list(JGrps) ->
[JGrp || {JGrp} <- JGrps];
_ -> []
end,
R#roster{groups = Groups};
{selected, []} ->
#roster{usj = {LUser, LServer, LJID},
us = {LUser, LServer}, jid = LJID}
end.
remove_user(LUser, LServer) ->
odbc_queries:del_user_roster_t(LServer, LUser),
{atomic, ok}.
update_roster(LUser, LServer, LJID, Item) ->
SJID = jid:to_string(LJID),
ItemVals = record_to_row(Item),
ItemGroups = Item#roster.groups,
odbc_queries:update_roster(LServer, LUser, SJID, ItemVals,
ItemGroups).
del_roster(LUser, LServer, LJID) ->
SJID = jid:to_string(LJID),
odbc_queries:del_roster(LServer, LUser, SJID).
read_subscription_and_groups(LUser, LServer, LJID) ->
SJID = jid:to_string(LJID),
case catch odbc_queries:get_subscription(LServer, LUser, SJID) of
{selected, [{SSubscription}]} ->
Subscription = case SSubscription of
<<"B">> -> both;
<<"T">> -> to;
<<"F">> -> from;
_ -> none
end,
Groups = case catch odbc_queries:get_rostergroup_by_jid(
LServer, LUser, SJID) of
{selected, JGrps} when is_list(JGrps) ->
[JGrp || {JGrp} <- JGrps];
_ -> []
end,
{Subscription, Groups};
_ ->
error
end.
export(_Server) ->
[{roster,
fun(Host, #roster{usj = {LUser, LServer, LJID}} = R)
when LServer == Host ->
Username = ejabberd_odbc:escape(LUser),
SJID = ejabberd_odbc:escape(jid:to_string(LJID)),
ItemVals = record_to_string(R),
ItemGroups = groups_to_string(R),
odbc_queries:update_roster_sql(Username, SJID,
ItemVals, ItemGroups);
(_Host, _R) ->
[]
end},
{roster_version,
fun(Host, #roster_version{us = {LUser, LServer}, version = Ver})
when LServer == Host ->
Username = ejabberd_odbc:escape(LUser),
SVer = ejabberd_odbc:escape(Ver),
[[<<"delete from roster_version where username='">>,
Username, <<"';">>],
[<<"insert into roster_version(username, version) values('">>,
Username, <<"', '">>, SVer, <<"');">>]];
(_Host, _R) ->
[]
end}].
import(LServer) ->
[{<<"select username, jid, nick, subscription, "
"ask, askmessage, server, subscribe, type from rosterusers;">>,
fun([LUser, JID|_] = Row) ->
Item = raw_to_record(LServer, Row),
Username = ejabberd_odbc:escape(LUser),
SJID = ejabberd_odbc:escape(JID),
{selected, _, Rows} =
ejabberd_odbc:sql_query_t(
[<<"select grp from rostergroups where username='">>,
Username, <<"' and jid='">>, SJID, <<"'">>]),
Groups = [Grp || [Grp] <- Rows],
Item#roster{groups = Groups}
end},
{<<"select username, version from roster_version;">>,
fun([LUser, Ver]) ->
#roster_version{us = {LUser, LServer}, version = Ver}
end}].
import(_, _) ->
pass.
%%%===================================================================
%%% Internal functions
%%%===================================================================
raw_to_record(LServer,
[User, SJID, Nick, SSubscription, SAsk, SAskMessage,
_SServer, _SSubscribe, _SType]) ->
raw_to_record(LServer,
{User, SJID, Nick, SSubscription, SAsk, SAskMessage,
_SServer, _SSubscribe, _SType});
raw_to_record(LServer,
{User, SJID, Nick, SSubscription, SAsk, SAskMessage,
_SServer, _SSubscribe, _SType}) ->
case jid:from_string(SJID) of
error -> error;
JID ->
LJID = jid:tolower(JID),
Subscription = case SSubscription of
<<"B">> -> both;
<<"T">> -> to;
<<"F">> -> from;
_ -> none
end,
Ask = case SAsk of
<<"S">> -> subscribe;
<<"U">> -> unsubscribe;
<<"B">> -> both;
<<"O">> -> out;
<<"I">> -> in;
_ -> none
end,
#roster{usj = {User, LServer, LJID},
us = {User, LServer}, jid = LJID, name = Nick,
subscription = Subscription, ask = Ask,
askmessage = SAskMessage}
end.
record_to_string(#roster{us = {User, _Server},
jid = JID, name = Name, subscription = Subscription,
ask = Ask, askmessage = AskMessage}) ->
Username = ejabberd_odbc:escape(User),
SJID =
ejabberd_odbc:escape(jid:to_string(jid:tolower(JID))),
Nick = ejabberd_odbc:escape(Name),
SSubscription = case Subscription of
both -> <<"B">>;
to -> <<"T">>;
from -> <<"F">>;
none -> <<"N">>
end,
SAsk = case Ask of
subscribe -> <<"S">>;
unsubscribe -> <<"U">>;
both -> <<"B">>;
out -> <<"O">>;
in -> <<"I">>;
none -> <<"N">>
end,
SAskMessage = ejabberd_odbc:escape(AskMessage),
[Username, SJID, Nick, SSubscription, SAsk, SAskMessage,
<<"N">>, <<"">>, <<"item">>].
record_to_row(
#roster{us = {LUser, _LServer},
jid = JID, name = Name, subscription = Subscription,
ask = Ask, askmessage = AskMessage}) ->
SJID = jid:to_string(jid:tolower(JID)),
SSubscription = case Subscription of
both -> <<"B">>;
to -> <<"T">>;
from -> <<"F">>;
none -> <<"N">>
end,
SAsk = case Ask of
subscribe -> <<"S">>;
unsubscribe -> <<"U">>;
both -> <<"B">>;
out -> <<"O">>;
in -> <<"I">>;
none -> <<"N">>
end,
{LUser, SJID, Name, SSubscription, SAsk, AskMessage}.
groups_to_string(#roster{us = {User, _Server},
jid = JID, groups = Groups}) ->
Username = ejabberd_odbc:escape(User),
SJID =
ejabberd_odbc:escape(jid:to_string(jid:tolower(JID))),
lists:foldl(fun (<<"">>, Acc) -> Acc;
(Group, Acc) ->
G = ejabberd_odbc:escape(Group),
[[Username, SJID, G] | Acc]
end,
[], Groups).
|
