Merge branch 'pan/epmd-vulnerabilities/OTP-8780' into dev

* pan/epmd-vulnerabilities/OTP-8780:
  Teach testcases to survive TIME_WAIT overload
  Update erl_interface doc and testsuite for epmd changes
  Restore null termination of input buffer
  Teach testcase epmd_SUITE:too_large to accept econnaborted
  Teach epmd_cli.c to not respond 'Killed' when killing denied
  Calculate minimal packet size for ALIVE2 requests correctly
  Document epmd and it's options properly and fixup help text
  Fix anomalies in epmd not yet reported as security issues
  Remove two buffer overflow vulnerabilities in EPMD
  Remove all support for ancient EPMD protocol
  Remove very old protocol from EPMD

Conflicts:
	lib/erl_interface/src/epmd/epmd_port.c

2 files changed, 9 insertions, 94 deletions

diff --git a/lib/kernel/src/erl_epmd.erl b/lib/kernel/src/erl_epmd.erl
index 4a22637304..91af49f303 100644
--- a/lib/kernel/src/erl_epmd.erl
+++ b/lib/kernel/src/erl_epmd.erl
@@ -210,19 +210,6 @@ open({A,B,C,D,E,F,G,H}=EpmdAddr, Timeout) when ?ip6(A,B,C,D,E,F,G,H) ->
 close(Socket) ->
     gen_tcp:close(Socket).
 
-
-do_register_node_v0(NodeName, TcpPort) ->
-    case open() of
-	{ok, Socket} ->
-	    Name = cstring(NodeName),
-	    Len = 1+2+length(Name),
-	    gen_tcp:send(Socket, [?int16(Len), ?EPMD_ALIVE,
-				  ?int16(TcpPort), Name]),
-	    wait_for_reg_reply_v0(Socket, []);
-	Error ->
-	    Error
-    end.
-
 do_register_node(NodeName, TcpPort) ->
     case open() of
 	{ok, Socket} ->
@@ -240,14 +227,7 @@ do_register_node(NodeName, TcpPort) ->
 				   Name,
 				   ?int16(Elen),
 				   Extra]),
-	    case wait_for_reg_reply(Socket, []) of
-		{error, epmd_close} ->
-		    %% could be old epmd; try old protocol
-%		    erlang:display('trying old'),
-		    do_register_node_v0(NodeName, TcpPort);
-		Other ->
-		    Other
-	    end;
+	    wait_for_reg_reply(Socket, []);
 	Error ->
 	    Error
     end.
@@ -305,41 +285,9 @@ wait_for_reg_reply(Socket, SoFar) ->
 	    {error, no_reg_reply_from_epmd}
     end.
     
-wait_for_reg_reply_v0(Socket, SoFar) ->
-    receive
-	{tcp, Socket, Data0} ->
-	    case SoFar ++ Data0 of
-		[$Y, A, B] ->
-		    {alive, Socket, ?u16(A, B)};
-		Data when length(Data) < 3 ->
-		    wait_for_reg_reply(Socket, Data);
-		Garbage ->
-		    {error, {garbage_from_epmd, Garbage}}
-	    end;
-	{tcp_closed, Socket} ->
-	    {error, duplicate_name}		% A guess -- the most likely reason.
-    after 10000 ->
-	    gen_tcp:close(Socket),
-	    {error, no_reg_reply_from_epmd}
-    end.
 %%
 %% Lookup a node "Name" at Host
 %%
-get_port_v0(Node, EpmdAddress) ->
-    case open(EpmdAddress) of
-	{ok, Socket} ->
-	    Name = cstring(Node),
-	    Len = 1+length(Name),
-	    gen_tcp:send(Socket, [?int16(Len),?EPMD_PORT_PLEASE, Name]),
-	    wait_for_port_reply_v0(Socket, []);
-	_Error -> 
-	    ?port_please_failure(),
-	    noport
-    end.
-
-%%% Not used anymore
-%%% get_port(Node, EpmdAddress) ->
-%%%     get_port(Node, EpmdAddress, infinity).
 
 get_port(Node, EpmdAddress, Timeout) ->
     case open(EpmdAddress, Timeout) of
@@ -347,40 +295,12 @@ get_port(Node, EpmdAddress, Timeout) ->
 	    Name = to_string(Node),
 	    Len = 1+length(Name),
 	    gen_tcp:send(Socket, [?int16(Len),?EPMD_PORT_PLEASE2_REQ, Name]),
-	    Reply = wait_for_port_reply(Socket, []),
-	    case Reply of
-		closed ->
-		    get_port_v0(Node, EpmdAddress);
-		Other ->
-		    Other
-	    end;
+	    wait_for_port_reply(Socket, []);
 	_Error -> 
 	    ?port_please_failure2(_Error),
 	    noport
     end.
 
-wait_for_port_reply_v0(Socket, SoFar) ->
-    receive
-	{tcp, Socket, Data0} ->
-%	    io:format("got ~p~n", [Data0]),
-	    case SoFar ++ Data0 of
-		[A, B] ->
-		    wait_for_close(Socket, {port, ?u16(A, B), 0});
-%		    wait_for_close(Socket, {port, ?u16(A, B)});
-		Data when length(Data) < 2 ->
-		    wait_for_port_reply_v0(Socket, Data);
-		Garbage ->
-		    ?port_please_failure(),
-		    {error, {garbage_from_epmd, Garbage}}
-	    end;
-	{tcp_closed, Socket} ->
-	    ?port_please_failure(),
-	    noport
-    after 10000 ->
-	    ?port_please_failure(),
-	    gen_tcp:close(Socket),
-	    noport
-    end.
 
 wait_for_port_reply(Socket, SoFar) ->
     receive
@@ -487,8 +407,6 @@ wait_for_close(Socket, Reply) ->
 %%
 %% Creates a (flat) null terminated string from atom or list.
 %%
-cstring(S) when is_atom(S) -> cstring(atom_to_list(S));
-cstring(S) when is_list(S) -> S ++ [0].
 
 to_string(S) when is_atom(S) -> atom_to_list(S);
 to_string(S) when is_list(S) -> S.
diff --git a/lib/kernel/src/erl_epmd.hrl b/lib/kernel/src/erl_epmd.hrl
index 47ab6195d8..5a50fda508 100644
--- a/lib/kernel/src/erl_epmd.hrl
+++ b/lib/kernel/src/erl_epmd.hrl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1998-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2010. All Rights Reserved.
 %% 
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
@@ -17,16 +17,13 @@
 %% %CopyrightEnd%
 %%
 
--define(EPMD_ALIVE, $a).
--define(EPMD_PORT_PLEASE, $p).
--define(EPMD_NAMES, $n).
--define(EPMD_DUMP, $d).
--define(EPMD_KILL, $k).
--define(EPMD_STOP, $s).
-
--define(EPMD_ALIVE_OK, $Y).
-
 -define(EPMD_ALIVE2_REQ, $x).
 -define(EPMD_PORT_PLEASE2_REQ, $z).
 -define(EPMD_ALIVE2_RESP, $y).
 -define(EPMD_PORT2_RESP, $w).
+-define(EPMD_NAMES, $n).
+
+%% Commands used only by interactive client
+-define(EPMD_DUMP, $d).
+-define(EPMD_KILL, $k).
+-define(EPMD_STOP, $s).