Chapril/xmpp.chapril.org-ejabberd
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Don't use same value in cache for user don't exist and wrong password

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By doing this check_password that returned info about mismatched password
caused user_exists checks performed after that to return wrongly that
account doesn't exist.
This commit is contained in:
Paweł Chmielowski 2020-10-22 11:09:14 +02:00
parent 7655e10ba4
commit b4ea1625e4
1 changed files with 19 additions and 9 deletions
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28
src/ejabberd_auth.erl
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@ -605,6 +605,7 @@ db_get_password(User, Server, Mod) ->
false when UseCache ->
case ets_cache:lookup(cache_tab(Mod), {User, Server}) of
{ok, exists} -> error;
not_found -> error;
Other -> Other
end;
false ->
@ -621,20 +622,29 @@ db_user_exists(User, Server, Mod) ->
case db_get_password(User, Server, Mod) of
{ok, _} ->
true;
not_found ->
false;
error ->
case {Mod:store_type(Server), use_cache(Mod, Server)} of
{external, true} ->
case ets_cache:lookup(
cache_tab(Mod), {User, Server},
fun() ->
case Mod:user_exists(User, Server) of
{CacheTag, true} -> {CacheTag, {ok, exists}};
{CacheTag, false} -> {CacheTag, error};
{_, {error, _}} = Err -> Err
end
end) of
Val = case ets_cache:lookup(cache_tab(Mod), {User, Server}, error) of
error ->
ets_cache:update(cache_tab(Mod), {User, Server}, {ok, exists},
fun() ->
case Mod:user_exists(User, Server) of
{CacheTag, true} -> {CacheTag, {ok, exists}};
{CacheTag, false} -> {CacheTag, not_found};
{_, {error, _}} = Err -> Err
end
end);
Other ->
Other
end,
case Val of
{ok, _} ->
true;
not_found ->
false;
error ->
false;
{error, _} = Err ->