diff options
Diffstat (limited to 'lib/kernel/src/dist_util.erl')
| -rw-r--r-- | lib/kernel/src/dist_util.erl | 49 |
1 files changed, 23 insertions, 26 deletions
diff --git a/lib/kernel/src/dist_util.erl b/lib/kernel/src/dist_util.erl index 8d2fc4d4b7..d929179715 100644 --- a/lib/kernel/src/dist_util.erl +++ b/lib/kernel/src/dist_util.erl @@ -131,7 +131,7 @@ handshake_other_started(#hs_data{request_type=ReqType}=HSData0) -> other_version=Version, other_node=Node, other_started=true}, - check_dflag_xnc(HSData), + check_dflags(HSData), is_allowed(HSData), ?debug({"MD5 connection from ~p (V~p)~n", [Node, HSData#hs_data.other_version]}), @@ -168,27 +168,24 @@ is_allowed(#hs_data{other_node = Node, %% Check that both nodes can handle the same types of extended %% node containers. If they can not, abort the connection. %% -check_dflag_xnc(#hs_data{other_node = Node, - other_flags = OtherFlags, - other_started = OtherStarted} = HSData) -> - XRFlg = ?DFLAG_EXTENDED_REFERENCES, - XPPFlg = case erlang:system_info(compat_rel) of - R when R >= 10 -> - ?DFLAG_EXTENDED_PIDS_PORTS; - _ -> - 0 - end, - ReqXncFlags = XRFlg bor XPPFlg, - case OtherFlags band ReqXncFlags =:= ReqXncFlags of - true -> - ok; - false -> - What = case {OtherFlags band XRFlg =:= XRFlg, - OtherFlags band XPPFlg =:= XPPFlg} of - {false, false} -> "references, pids and ports"; - {true, false} -> "pids and ports"; - {false, true} -> "references" - end, +check_dflags(#hs_data{other_node = Node, + other_flags = OtherFlags, + other_started = OtherStarted} = HSData) -> + + Mandatory = [{?DFLAG_EXTENDED_REFERENCES, "EXTENDED_REFERENCES"}, + {?DFLAG_EXTENDED_PIDS_PORTS, "EXTENDED_PIDS_PORTS"}, + {?DFLAG_UTF8_ATOMS, "UTF8_ATOMS"}], + Missing = lists:filtermap(fun({Bit, Str}) -> + case Bit band OtherFlags of + Bit -> false; + 0 -> {true, Str} + end + end, + Mandatory), + case Missing of + [] -> + ok; + _ -> case OtherStarted of true -> send_status(HSData, not_allowed), @@ -199,9 +196,9 @@ check_dflag_xnc(#hs_data{other_node = Node, How = "aborted" end, error_msg("** ~w: Connection attempt ~s node ~w ~s " - "since it cannot handle extended ~s. " - "**~n", [node(), Dir, Node, How, What]), - ?shutdown2(Node, {check_dflag_xnc_failed, What}) + "since it cannot handle ~p." + "**~n", [node(), Dir, Node, How, Missing]), + ?shutdown2(Node, {check_dflags_failed, Missing}) end. @@ -327,7 +324,7 @@ handshake_we_started(#hs_data{request_type=ReqType, NewHSData = HSData#hs_data{this_flags = ThisFlags, other_flags = OtherFlags, other_started = false}, - check_dflag_xnc(NewHSData), + check_dflags(NewHSData), MyChallenge = gen_challenge(), {MyCookie,HisCookie} = get_cookies(Node), send_challenge_reply(NewHSData,MyChallenge, |