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-rw-r--r--lib/ssh/src/ssh_dbg.erl211
1 files changed, 170 insertions, 41 deletions
diff --git a/lib/ssh/src/ssh_dbg.erl b/lib/ssh/src/ssh_dbg.erl
index 3f742ad9b6..eb2c2848f3 100644
--- a/lib/ssh/src/ssh_dbg.erl
+++ b/lib/ssh/src/ssh_dbg.erl
@@ -24,6 +24,8 @@
-export([messages/0, messages/1, messages/2, messages/3,
auth/0, auth/1, auth/2, auth/3,
+ algs/0, algs/1, algs/2, algs/3,
+ hostkey/0, hostkey/1, hostkey/2, hostkey/3,
stop/0
]).
@@ -46,6 +48,16 @@ auth(F) -> start(auth,F).
auth(F,X) -> start(auth,F,X).
auth(F,M,I) -> start(auth,F,M,I).
+algs() -> start(algs).
+algs(F) -> start(algs,F).
+algs(F,X) -> start(algs,F,X).
+algs(F,M,I) -> start(algs,F,M,I).
+
+hostkey() -> start(hostkey).
+hostkey(F) -> start(hostkey,F).
+hostkey(F,X) -> start(hostkey,F,X).
+hostkey(F,M,I) -> start(hostkey,F,M,I).
+
stop() -> dbg:stop().
%%%----------------------------------------------------------------
@@ -71,23 +83,49 @@ fmt_fun(F) -> fun(Fmt,Args,Data) -> F(Fmt,Args), Data end.
id_fun() -> fun(X) -> X end.
%%%----------------------------------------------------------------
-dbg_ssh(msg) ->
- dbg_ssh(auth),
- dbg:tp(ssh_message,encode,1, x),
- dbg:tp(ssh_message,decode,1, x),
- dbg:tpl(ssh_transport,select_algorithm,4, x),
- dbg:tp(ssh_transport,hello_version_msg,1, x),
- dbg:tp(ssh_transport,handle_hello_version,1, x),
- dbg:tpl(ssh_connection_handler,ext_info,2, x);
+dbg_ssh(What) ->
+ case [E || E <- lists:flatten(dbg_ssh0(What)),
+ element(1,E) =/= ok] of
+ [] -> ok;
+ Other -> Other
+ end.
+
+
+dbg_ssh0(auth) ->
+ [dbg:tp(ssh_transport,hello_version_msg,1, x),
+ dbg:tp(ssh_transport,handle_hello_version,1, x),
+ dbg:tp(ssh_message,encode,1, x),
+ dbg:tpl(ssh_transport,select_algorithm,4, x),
+ dbg:tpl(ssh_connection_handler,ext_info,2, x),
+ lists:map(fun(F) -> dbg:tp(ssh_auth, F, x) end,
+ [publickey_msg, password_msg, keyboard_interactive_msg])
+ ];
+
+dbg_ssh0(algs) ->
+ [dbg:tpl(ssh_transport,select_algorithm,4, x),
+ dbg:tpl(ssh_connection_handler,ext_info,2, x)
+ ];
+
+dbg_ssh0(hostkey) ->
+ [dbg:tpl(ssh_transport, verify_host_key, 4, x),
+ dbg:tp(ssh_transport, verify, 4, x),
+ dbg:tpl(ssh_transport, known_host_key, 3, x),
+%% dbg:tpl(ssh_transport, accepted_host, 4, x),
+ dbg:tpl(ssh_transport, add_host_key, 4, x),
+ dbg:tpl(ssh_transport, is_host_key, 5, x)
+ ];
+
+dbg_ssh0(msg) ->
+ [dbg_ssh0(hostkey),
+ dbg_ssh0(auth),
+ dbg:tp(ssh_message,encode,1, x),
+ dbg:tp(ssh_message,decode,1, x),
+ dbg:tpl(ssh_transport,select_algorithm,4, x),
+ dbg:tp(ssh_transport,hello_version_msg,1, x),
+ dbg:tp(ssh_transport,handle_hello_version,1, x),
+ dbg:tpl(ssh_connection_handler,ext_info,2, x)
+ ].
-dbg_ssh(auth) ->
- dbg:tp(ssh_transport,hello_version_msg,1, x),
- dbg:tp(ssh_transport,handle_hello_version,1, x),
- dbg:tp(ssh_message,encode,1, x),
- dbg:tpl(ssh_transport,select_algorithm,4, x),
- dbg:tpl(ssh_connection_handler,ext_info,2, x),
- lists:foreach(fun(F) -> dbg:tp(ssh_auth, F, x) end,
- [publickey_msg, password_msg, keyboard_interactive_msg]).
%%%================================================================
cond_start(Type, WriteFun, MangleArgFun, Init) ->
@@ -108,12 +146,31 @@ msg_formater(msg, {trace_ts,_Pid,return_from,{ssh_message,encode,1},_Res,_TS}, D
msg_formater(msg, {trace_ts,_Pid,call,{ssh_message,decode,_},_TS}, D) ->
D;
msg_formater(msg, {trace_ts,Pid,return_from,{ssh_message,decode,1},Msg,TS}, D) ->
- fmt("~n~s ~p RECV ~s~n", [ts(TS),Pid,wr_record(shrink_bin(Msg))], D);
-
-msg_formater(auth, {trace_ts,Pid,return_from,{ssh_message,decode,1},#ssh_msg_userauth_failure{authentications=As},TS}, D) ->
+ Extra =
+ case Msg of
+ #ssh_msg_userauth_info_request{data = D0} ->
+ try ssh_message:decode_keyboard_interactive_prompts(D0, [])
+ of
+ Acc ->
+ io_lib:format(" -- decoded data:~n", []) ++
+ element(1,
+ lists:mapfoldl(
+ fun({Prompt,Echo}, N) ->
+ {io_lib:format(" prompt[~p]: \"~s\" (echo=~p)~n",[N,Prompt,Echo]), N+1}
+ end, 1, Acc))
+ catch
+ _:_ ->
+ ""
+ end;
+ _ ->
+ ""
+ end,
+ fmt("~n~s ~p RECV ~s~s~n", [ts(TS),Pid,wr_record(shrink_bin(Msg)),Extra], D);
+
+msg_formater(_auth, {trace_ts,Pid,return_from,{ssh_message,decode,1},#ssh_msg_userauth_failure{authentications=As},TS}, D) ->
fmt("~n~s ~p Client login FAILURE. Try ~s~n", [ts(TS),Pid,As], D);
-msg_formater(auth, {trace_ts,Pid,return_from,{ssh_message,decode,1},#ssh_msg_userauth_success{},TS}, D) ->
+msg_formater(_auth, {trace_ts,Pid,return_from,{ssh_message,decode,1},#ssh_msg_userauth_success{},TS}, D) ->
fmt("~n~s ~p Client login SUCCESS~n", [ts(TS),Pid], D);
@@ -155,20 +212,61 @@ msg_formater(_, {trace_ts,Pid,return_from,{ssh_connection_handler,ext_info,2},St
D
end;
+msg_formater(_, {trace_ts,Pid,call, {ssh_transport,verify_host_key,[_Ssh,_PK,_Dgst,{AlgStr,_Sign}]},TS}, D) ->
+ fmt("~n~s ~p Client got a ~s hostkey. Will try to verify it~n", [ts(TS),Pid,AlgStr], D);
+msg_formater(_, {trace_ts,Pid,return_from, {ssh_transport,verify_host_key,4}, Result, TS}, D) ->
+ case Result of
+ ok -> fmt("~n~s ~p Hostkey verified.~n", [ts(TS),Pid], D);
+ {error,E} ->
+ fmt("~n~s ~p ***** Hostkey NOT verified: ~p ******!~n", [ts(TS),Pid,E], D);
+ _ -> fmt("~n~s ~p ***** Hostkey is NOT verified: ~p ******!~n", [ts(TS),Pid,Result], D)
+ end;
+
+msg_formater(_, {trace_ts,Pid,return_from, {ssh_transport,verify,4}, Result, TS}, D) ->
+ case Result of
+ true -> D;
+ _ -> fmt("~n~s ~p Couldn't verify the signature!~n", [ts(TS),Pid], D)
+ end;
+
+msg_formater(_, {trace_ts,_Pid,call, {ssh_transport,is_host_key,_}, _TS}, D) -> D;
+msg_formater(_, {trace_ts,Pid,return_from, {ssh_transport,is_host_key,5}, {CbMod,Result}, TS}, D) ->
+ case Result of
+ true -> fmt("~n~s ~p Hostkey found by ~p.~n", [ts(TS),Pid,CbMod], D);
+ _ -> fmt("~n~s ~p Hostkey NOT found by ~p.~n", [ts(TS),Pid,CbMod], D)
+ end;
+
+msg_formater(_, {trace_ts,_Pid,call, {ssh_transport,add_host_key,_}, _TS}, D) -> D;
+msg_formater(_, {trace_ts,Pid,return_from, {ssh_transport,add_host_key,4}, {CbMod,Result}, TS}, D) ->
+ case Result of
+ ok -> fmt("~n~s ~p New hostkey added by ~p.~n", [ts(TS),Pid,CbMod], D);
+ _ -> D
+ end;
+
+msg_formater(_, {trace_ts,_Pid,call,{ssh_transport,known_host_key,_},_TS}, D) -> D;
+msg_formater(_, {trace_ts,Pid,return_from, {ssh_transport,known_host_key,3}, Result, TS}, D) ->
+ case Result of
+ ok -> D;
+ {error,E} -> fmt("~n~s ~p Hostkey addition failed: ~p~n", [ts(TS),Pid,E], D);
+ _ -> fmt("~n~s ~p Hostkey addition: ~p~n", [ts(TS),Pid,Result], D)
+ end;
+
msg_formater(_, {trace_ts,Pid,call,{ssh_auth,publickey_msg,[[SigAlg,#ssh{user=User}]]},TS}, D) ->
- fmt("~n~s ~p Client will try to login user ~p with public key algorithm ~p~n", [ts(TS),Pid,User,SigAlg], D);
+ fmt("~n~s ~p Client will try to login user ~p with method: public key algorithm ~p~n", [ts(TS),Pid,User,SigAlg], D);
msg_formater(_, {trace_ts,Pid,return_from,{ssh_auth,publickey_msg,1},{not_ok,#ssh{user=User}},TS}, D) ->
- fmt("~s ~p User ~p can't login with that kind of public key~n", [ts(TS),Pid,User], D);
+ fmt("~s ~p User ~p can't use that kind of public key~n", [ts(TS),Pid,User], D);
+msg_formater(_, {trace_ts,_Pid,return_from,{ssh_auth,publickey_msg,1},_,_TS}, D) -> D;
msg_formater(_, {trace_ts,Pid,call,{ssh_auth,password_msg,[[#ssh{user=User}]]},TS}, D) ->
- fmt("~n~s ~p Client will try to login user ~p with password~n", [ts(TS),Pid,User], D);
+ fmt("~n~s ~p Client will try to login user ~p with method: password~n", [ts(TS),Pid,User], D);
msg_formater(_, {trace_ts,Pid,return_from,{ssh_auth,password_msg,1},{not_ok,#ssh{user=User}},TS}, D) ->
- fmt("~s ~p User ~p can't login with password~n", [ts(TS),Pid,User], D);
+ fmt("~s ~p User ~p can't use method password as login method~n", [ts(TS),Pid,User], D);
+msg_formater(_, {trace_ts,_Pid,return_from,{ssh_auth,password_msg,1},_Result,_TS}, D) -> D;
msg_formater(_, {trace_ts,Pid,call,{ssh_auth,keyboard_interactive_msg,[[#ssh{user=User}]]},TS}, D) ->
- fmt("~n~s ~p Client will try to login user ~p with password~n", [ts(TS),Pid,User], D);
+ fmt("~n~s ~p Client will try to login user ~p with method: keyboard-interactive~n", [ts(TS),Pid,User], D);
msg_formater(_, {trace_ts,Pid,return_from,{ssh_auth,keyboard_interactive_msg,1},{not_ok,#ssh{user=User}},TS}, D) ->
- fmt("~s ~p User ~p can't login with keyboard_interactive password~n", [ts(TS),Pid,User], D);
+ fmt("~s ~p User ~p can't use method keyboard-interactive as login method~n", [ts(TS),Pid,User], D);
+msg_formater(_, {trace_ts,_Pid,return_from,{ssh_auth,keyboard_interactive_msg,1},_Result,_TS}, D) -> D;
msg_formater(msg, {trace_ts,Pid,send,{tcp,Sock,Bytes},Pid,TS}, D) ->
fmt("~n~s ~p TCP SEND on ~p~n ~p~n", [ts(TS),Pid,Sock, shrink_bin(Bytes)], D);
@@ -187,26 +285,20 @@ msg_formater(msg, {trace_ts,Pid,'receive',ErlangMsg,TS}, D) ->
fmt("~n~s ~p ERL MSG RECEIVE~n ~p~n", [ts(TS),Pid,shrink_bin(ErlangMsg)], D);
-%% msg_formater(_, {trace_ts,_Pid,return_from,MFA,_Ret,_TS}=M, D) ->
-%% case lists:member(MFA, [{ssh_auth,keyboard_interactive_msg,1},
-%% {ssh_auth,password_msg,1},
-%% {ssh_auth,publickey_msg,1}]) of
-%% true ->
-%% D;
-%% false ->
-%% fmt("~nDBG ~n~p~n", [shrink_bin(M)], D)
-%% end;
-
-%% msg_formater(_, M, D) ->
-%% fmt("~nDBG ~n~p~n", [shrink_bin(M)], D).
-
-msg_formater(_, _, D) ->
- D.
+msg_formater(_, _M, D) ->
+ fmt("~nDBG other ~n~p~n", [shrink_bin(_M)], D),
+ D.
%%%----------------------------------------------------------------
-record(data, {writer,
+ initialized,
acc}).
+fmt(Fmt, Args, D=#data{initialized=false}) ->
+ fmt(Fmt, Args,
+ D#data{acc = (D#data.writer)("~s~n", [initial_info()], D#data.acc),
+ initialized = true}
+ );
fmt(Fmt, Args, D=#data{writer=Write, acc=Acc}) ->
D#data{acc = Write(Fmt,Args,Acc)}.
@@ -221,10 +313,47 @@ setup_tracer(Type, WriteFun, MangleArgFun, Init) ->
msg_formater(Type, MangleArgFun(Arg), D)
end,
InitialData = #data{writer = WriteFun,
+ initialized = false,
acc = Init},
{ok,_} = dbg:tracer(process, {Handler, InitialData}),
ok.
+
+initial_info() ->
+ Lines =
+ [ts(erlang:timestamp()),
+ "",
+ "SSH:"]
+ ++ as_list_of_lines(case application:get_key(ssh,vsn) of
+ {ok,Vsn} -> Vsn;
+ _ -> "(ssh not started)"
+ end)
+ ++ ["",
+ "Cryptolib:"]
+ ++ as_list_of_lines(crypto:info_lib())
+ ++ ["",
+ "Crypto app:"]
+ ++ as_list_of_lines(crypto:supports()),
+ W = max_len(Lines),
+ append_lines([line_of($*, W+4)]
+ ++ prepend_lines("* ", Lines)
+ ++ [line_of($-, W+4)],
+ io_lib:nl()
+ ).
+
+
+as_list_of_lines(Term) ->
+ prepend_lines(" ",
+ string:tokens(lists:flatten(io_lib:format("~p",[Term])),
+ io_lib:nl() % Get line endings in current OS
+ )
+ ).
+
+line_of(Char,W) -> lists:duplicate(W,Char).
+max_len(L) -> lists:max([length(S) || S<-L]).
+append_lines(L, X) -> [S++X || S<-L].
+prepend_lines(X, L) -> [X++S || S<-L].
+
%%%----------------------------------------------------------------
shrink_bin(B) when is_binary(B), size(B)>256 -> {'*** SHRINKED BIN',
size(B),
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