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Diffstat (limited to 'lib/kernel/src/inet6_tcp_dist.erl')
-rw-r--r--lib/kernel/src/inet6_tcp_dist.erl365
1 files changed, 6 insertions, 359 deletions
diff --git a/lib/kernel/src/inet6_tcp_dist.erl b/lib/kernel/src/inet6_tcp_dist.erl
index a74a4916ba..3ab7f269bb 100644
--- a/lib/kernel/src/inet6_tcp_dist.erl
+++ b/lib/kernel/src/inet6_tcp_dist.erl
@@ -24,28 +24,6 @@
-export([listen/1, accept/1, accept_connection/5,
setup/5, close/1, select/1, is_node_name/1]).
-%% internal exports
-
--export([accept_loop/2,do_accept/6,do_setup/6, getstat/1,tick/1]).
-
--import(error_logger,[error_msg/2]).
-
--include("net_address.hrl").
-
-
-
--define(to_port(Socket, Data, Opts),
- case inet6_tcp:send(Socket, Data, Opts) of
- {error, closed} ->
- self() ! {tcp_closed, Socket},
- {error, closed};
- R ->
- R
- end).
-
-
--include("dist.hrl").
--include("dist_util.hrl").
%% ------------------------------------------------------------
%% Select this protocol based on node name
@@ -53,14 +31,7 @@
%% ------------------------------------------------------------
select(Node) ->
- case split_node(atom_to_list(Node), $@, []) of
- [_, Host] ->
- case inet:getaddr(Host,inet6) of
- {ok,_} -> true;
- _ -> false
- end;
- _ -> false
- end.
+ inet_tcp_dist:gen_select(inet6_tcp, Node).
%% ------------------------------------------------------------
%% Create the listen socket, i.e. the port that this erlang
@@ -68,59 +39,14 @@ select(Node) ->
%% ------------------------------------------------------------
listen(Name) ->
- case inet6_tcp:listen(0, [{active, false}, {packet,2}]) of
- {ok, Socket} ->
- TcpAddress = get_tcp_address(Socket),
- {_,Port} = TcpAddress#net_address.address,
- case erl_epmd:register_node(Name, Port) of
- {ok, Creation} ->
- {ok, {Socket, TcpAddress, Creation}};
- Error ->
- Error
- end;
- Error ->
- Error
- end.
+ inet_tcp_dist:gen_listen(inet6_tcp, Name).
%% ------------------------------------------------------------
%% Accepts new connection attempts from other Erlang nodes.
%% ------------------------------------------------------------
accept(Listen) ->
- spawn_opt(?MODULE, accept_loop, [self(), Listen], [link, {priority, max}]).
-
-accept_loop(Kernel, Listen) ->
- case inet6_tcp:accept(Listen) of
- {ok, Socket} ->
- Kernel ! {accept,self(),Socket,inet6,tcp},
- _ = controller(Kernel, Socket),
- accept_loop(Kernel, Listen);
- Error ->
- exit(Error)
- end.
-
-controller(Kernel, Socket) ->
- receive
- {Kernel, controller, Pid} ->
- flush_controller(Pid, Socket),
- inet6_tcp:controlling_process(Socket, Pid),
- flush_controller(Pid, Socket),
- Pid ! {self(), controller};
- {Kernel, unsupported_protocol} ->
- exit(unsupported_protocol)
- end.
-
-flush_controller(Pid, Socket) ->
- receive
- {tcp, Socket, Data} ->
- Pid ! {tcp, Socket, Data},
- flush_controller(Pid, Socket);
- {tcp_closed, Socket} ->
- Pid ! {tcp_closed, Socket},
- flush_controller(Pid, Socket)
- after 0 ->
- ok
- end.
+ inet_tcp_dist:gen_accept(inet6_tcp, Listen).
%% ------------------------------------------------------------
%% Accepts a new connection attempt from another Erlang node.
@@ -128,85 +54,7 @@ flush_controller(Pid, Socket) ->
%% ------------------------------------------------------------
accept_connection(AcceptPid, Socket, MyNode, Allowed, SetupTime) ->
- spawn_opt(?MODULE, do_accept,
- [self(), AcceptPid, Socket, MyNode, Allowed, SetupTime],
- [link, {priority, max}]).
-
-do_accept(Kernel, AcceptPid, Socket, MyNode, Allowed, SetupTime) ->
- receive
- {AcceptPid, controller} ->
- Timer = dist_util:start_timer(SetupTime),
- case check_ip(Socket) of
- true ->
- HSData = #hs_data{
- kernel_pid = Kernel,
- this_node = MyNode,
- socket = Socket,
- timer = Timer,
- this_flags = 0,
- allowed = Allowed,
- f_send = fun(S,D) -> inet6_tcp:send(S,D) end,
- f_recv = fun(S,N,T) -> inet6_tcp:recv(S,N,T)
- end,
- f_setopts_pre_nodeup =
- fun(S) ->
- inet:setopts(S,
- [{active, false},
- {packet, 4},
- nodelay()])
- end,
- f_setopts_post_nodeup =
- fun(S) ->
- inet:setopts(S,
- [{active, true},
- {deliver, port},
- {packet, 4},
- nodelay()])
- end,
- f_getll = fun(S) ->
- inet:getll(S)
- end,
- f_address = fun get_remote_id/2,
- mf_tick = fun ?MODULE:tick/1,
- mf_getstat = fun ?MODULE:getstat/1
- },
- dist_util:handshake_other_started(HSData);
- {false,IP} ->
- error_msg("** Connection attempt from "
- "disallowed IP ~w ** ~n", [IP]),
- ?shutdown(no_node)
- end
- end.
-
-
-%% we may not always want the nodelay behaviour
-%% for performance reasons
-
-nodelay() ->
- case application:get_env(kernel, dist_nodelay) of
- undefined ->
- {nodelay, true};
- {ok, true} ->
- {nodelay, true};
- {ok, false} ->
- {nodelay, false};
- _ ->
- {nodelay, true}
- end.
-
-
-%% ------------------------------------------------------------
-%% Get remote information about a Socket.
-%% ------------------------------------------------------------
-
-get_remote_id(Socket, Node) ->
- {ok, Address} = inet:peername(Socket),
- [_, Host] = split_node(atom_to_list(Node), $@, []),
- #net_address {
- address = Address,
- host = Host,
- protocol = tcp,
- family = inet6 }.
+ inet_tcp_dist:gen_accept_connection(inet6_tcp, AcceptPid, Socket, MyNode, Allowed, SetupTime).
%% ------------------------------------------------------------
%% Setup a new connection to another Erlang node.
@@ -214,214 +62,13 @@ get_remote_id(Socket, Node) ->
%% ------------------------------------------------------------
setup(Node, Type, MyNode, LongOrShortNames,SetupTime) ->
- spawn_opt(?MODULE, do_setup,
- [self(), Node, Type, MyNode, LongOrShortNames, SetupTime],
- [link, {priority, max}]).
-
-do_setup(Kernel, Node, Type, MyNode, LongOrShortNames,SetupTime) ->
- ?trace("~p~n",[{?MODULE,self(),setup,Node}]),
- [Name, Address] = splitnode(Node, LongOrShortNames),
- case inet:getaddr(Address, inet6) of
- {ok, Ip} ->
- Timer = dist_util:start_timer(SetupTime),
- case erl_epmd:port_please(Name, Ip) of
- {port, TcpPort, Version} ->
- ?trace("port_please(~p) -> version ~p~n",
- [Node,Version]),
- dist_util:reset_timer(Timer),
- case inet6_tcp:connect(Ip, TcpPort,
- [{active, false},
- {packet,2}]) of
- {ok, Socket} ->
- HSData = #hs_data{
- kernel_pid = Kernel,
- other_node = Node,
- this_node = MyNode,
- socket = Socket,
- timer = Timer,
- this_flags = 0,
- other_version = Version,
- f_send = fun inet6_tcp:send/2,
- f_recv = fun inet6_tcp:recv/3,
- f_setopts_pre_nodeup =
- fun(S) ->
- inet:setopts
- (S,
- [{active, false},
- {packet, 4},
- nodelay()])
- end,
- f_setopts_post_nodeup =
- fun(S) ->
- inet:setopts
- (S,
- [{active, true},
- {deliver, port},
- {packet, 4},
- nodelay()])
- end,
- f_getll = fun inet:getll/1,
- f_address =
- fun(_,_) ->
- #net_address {
- address = {Ip,TcpPort},
- host = Address,
- protocol = tcp,
- family = inet6}
- end,
- mf_tick = fun ?MODULE:tick/1,
- mf_getstat = fun ?MODULE:getstat/1,
- request_type = Type
- },
- dist_util:handshake_we_started(HSData);
- _ ->
- %% Other Node may have closed since
- %% port_please !
- ?trace("other node (~p) "
- "closed since port_please.~n",
- [Node]),
- ?shutdown(Node)
- end;
- _ ->
- ?trace("port_please (~p) "
- "failed.~n", [Node]),
- ?shutdown(Node)
- end;
- __Other ->
- ?trace("inet_getaddr(~p) "
- "failed (~p).~n", [Node,__Other]),
- ?shutdown(Node)
- end.
+ inet_tcp_dist:gen_setup(inet6_tcp, Node, Type, MyNode, LongOrShortNames, SetupTime).
%%
%% Close a socket.
%%
close(Socket) ->
inet6_tcp:close(Socket).
-
-
-%% If Node is illegal terminate the connection setup!!
-splitnode(Node, LongOrShortNames) ->
- case split_node(atom_to_list(Node), $@, []) of
- [Name|Tail] when Tail =/= [] ->
- Host = lists:append(Tail),
- case split_node(Host, $., []) of
- [_] when LongOrShortNames =:= longnames ->
- case inet_parse:ipv6strict_address(Host) of
- {ok, _} ->
- [Name, Host];
- _ ->
- error_msg("** System running to use "
- "fully qualified "
- "hostnames **~n"
- "** Hostname ~s is illegal **~n",
- [Host]),
- ?shutdown(Node)
- end;
- L when length(L) > 1, LongOrShortNames =:= shortnames ->
- error_msg("** System NOT running to use fully qualified "
- "hostnames **~n"
- "** Hostname ~s is illegal **~n",
- [Host]),
- ?shutdown(Node);
- _ ->
- [Name, Host]
- end;
- [_] ->
- error_msg("** Nodename ~p illegal, no '@' character **~n",
- [Node]),
- ?shutdown(Node);
- _ ->
- error_msg("** Nodename ~p illegal **~n", [Node]),
- ?shutdown(Node)
- end.
-
-split_node([Chr|T], Chr, Ack) -> [lists:reverse(Ack)|split_node(T, Chr, [])];
-split_node([H|T], Chr, Ack) -> split_node(T, Chr, [H|Ack]);
-split_node([], _, Ack) -> [lists:reverse(Ack)].
-
-%% ------------------------------------------------------------
-%% Fetch local information about a Socket.
-%% ------------------------------------------------------------
-get_tcp_address(Socket) ->
- {ok, Address} = inet:sockname(Socket),
- {ok, Host} = inet:gethostname(),
- #net_address {
- address = Address,
- host = Host,
- protocol = tcp,
- family = inet6
- }.
-
-%% ------------------------------------------------------------
-%% Do only accept new connection attempts from nodes at our
-%% own LAN, if the check_ip environment parameter is true.
-%% ------------------------------------------------------------
-check_ip(Socket) ->
- case application:get_env(check_ip) of
- {ok, true} ->
- case get_ifs(Socket) of
- {ok, IFs, IP} ->
- check_ip(IFs, IP);
- _ ->
- ?shutdown(no_node)
- end;
- _ ->
- true
- end.
-
-get_ifs(Socket) ->
- case inet:peername(Socket) of
- {ok, {IP, _}} ->
- case inet:getif(Socket) of
- {ok, IFs} -> {ok, IFs, IP};
- Error -> Error
- end;
- Error ->
- Error
- end.
-
-check_ip([{OwnIP, _, Netmask}|IFs], PeerIP) ->
- case {mask(Netmask, PeerIP), mask(Netmask, OwnIP)} of
- {M, M} -> true;
- _ -> check_ip(IFs, PeerIP)
- end;
-check_ip([], PeerIP) ->
- {false, PeerIP}.
-mask({M1,M2,M3,M4,M5,M6,M7,M8}, {IP1,IP2,IP3,IP4,IP5,IP6,IP7,IP8}) ->
- {M1 band IP1,
- M2 band IP2,
- M3 band IP3,
- M4 band IP4,
- M5 band IP5,
- M6 band IP6,
- M7 band IP7,
- M8 band IP8 }.
-
is_node_name(Node) when is_atom(Node) ->
- case split_node(atom_to_list(Node), $@, []) of
- [_,_Host] -> true;
- _ -> false
- end;
-is_node_name(_Node) ->
- false.
-tick(Sock) ->
- ?to_port(Sock,[],[force]).
-getstat(Socket) ->
- case inet:getstat(Socket, [recv_cnt, send_cnt, send_pend]) of
- {ok, Stat} ->
- split_stat(Stat,0,0,0);
- Error ->
- Error
- end.
-
-split_stat([{recv_cnt, R}|Stat], _, W, P) ->
- split_stat(Stat, R, W, P);
-split_stat([{send_cnt, W}|Stat], R, _, P) ->
- split_stat(Stat, R, W, P);
-split_stat([{send_pend, P}|Stat], R, W, _) ->
- split_stat(Stat, R, W, P);
-split_stat([], R, W, P) ->
- {ok, R, W, P}.
-
+ inet_tcp_dist:is_node_name(Node).
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