From e7ec2d06b5b7b26f7a00e3853e99ce6a00be2932 Mon Sep 17 00:00:00 2001 From: Hans Nilsson Date: Thu, 17 Mar 2016 10:01:50 +0100 Subject: ssh: Make ssh_info:string() return the result from print() as a string Good for test cases. --- lib/ssh/src/ssh_info.erl | 127 ++++++++++++++++++++++++++++++----------------- 1 file changed, 81 insertions(+), 46 deletions(-) diff --git a/lib/ssh/src/ssh_info.erl b/lib/ssh/src/ssh_info.erl index 4e6e25bc70..0a4bd7706b 100644 --- a/lib/ssh/src/ssh_info.erl +++ b/lib/ssh/src/ssh_info.erl @@ -27,6 +27,14 @@ -compile(export_all). +string() -> + Pid = spawn(fun init/0), + print(Pid), + Pid ! {get,self()}, + receive + {result,R} -> R + end. + print() -> print(user). @@ -34,55 +42,57 @@ print(D) -> try supervisor:which_children(ssh_sup) of _ -> - io:nl(D), + io__nl(D), print_general(D), - io:nl(D), + io__nl(D), underline(D, "Client part", $=), print_clients(D), - io:nl(D), + io__nl(D), underline(D, "Server part", $=), print_servers(D), - io:nl(D), + io__nl(D), %% case os:type() of %% {unix,_} -> - %% io:nl(), + %% io__nl(), %% underline("Linux part", $=), %% underline("Listening"), - %% catch io:format(os:cmd("netstat -tpln")), - %% io:nl(), + %% catch io__format(os:cmd("netstat -tpln")), + %% io__nl(), %% underline("Other"), - %% catch io:format(os:cmd("netstat -tpn")); + %% catch io__format(os:cmd("netstat -tpn")); %% _ -> ok %% end, underline(D, "Supervisors", $=), walk_sups(D, ssh_sup), - io:nl(D) + io__nl(D) catch _:_ -> - io:format(D,"Ssh not found~n",[]) + io__format(D,"Ssh not found~n",[]) end. %%%================================================================ print_general(D) -> {_Name, Slogan, Ver} = lists:keyfind(ssh,1,application:which_applications()), underline(D, io_lib:format("~s ~s", [Slogan, Ver]), $=), - io:format(D, 'This printout is generated ~s. ~n',[datetime()]). + io__format(D, 'This printout is generated ~s. ~n',[datetime()]). %%%================================================================ +-define(INDENT, " "). + print_clients(D) -> PrintClient = fun(X) -> print_client(D,X) end, try lists:foreach(PrintClient, supervisor:which_children(sshc_sup)) catch C:E -> - io:format(D, '***FAILED: ~p:~p~n',[C,E]) + io__format(D, '***FAILED: ~p:~p~n',[C,E]) end. print_client(D, {undefined,Pid,supervisor,[ssh_connection_handler]}) -> {{Local,Remote},_Str} = ssh_connection_handler:get_print_info(Pid), - io:format(D, " Local=~s Remote=~s ConnectionRef=~p~n",[fmt_host_port(Local),fmt_host_port(Remote),Pid]); + io__format(D, ?INDENT"Local: ~s Remote: ~s ConnectionRef = ~p~n",[fmt_host_port(Local),fmt_host_port(Remote),Pid]); print_client(D, Other) -> - io:format(D, " [[Other 1: ~p]]~n",[Other]). + io__format(D, " [[Other 1: ~p]]~n",[Other]). %%%================================================================ @@ -92,51 +102,56 @@ print_servers(D) -> lists:foreach(PrintServer, supervisor:which_children(sshd_sup)) catch C:E -> - io:format(D, '***FAILED: ~p:~p~n',[C,E]) + io__format(D, '***FAILED: ~p:~p~n',[C,E]) end. -print_server(D, {{server,ssh_system_sup,LocalHost,LocalPort},Pid,supervisor,[ssh_system_sup]}) when is_pid(Pid) -> - io:format(D, 'Local=~s (~p children)~n',[fmt_host_port({LocalHost,LocalPort}), - ssh_acceptor:number_of_connections(Pid)]), + +print_server(D, {{server,ssh_system_sup,LocalHost,LocalPort,Profile},Pid,supervisor,[ssh_system_sup]}) when is_pid(Pid) -> + io__format(D, ?INDENT"Listen: ~s (~p children) Profile ~p~n",[fmt_host_port({LocalHost,LocalPort}), + ssh_acceptor:number_of_connections(Pid), + Profile]), PrintSystemSup = fun(X) -> print_system_sup(D,X) end, - lists:foreach(PrintSystemSup, supervisor:which_children(Pid)); -print_server(D, Other) -> - io:format(D, " [[Other 2: ~p]]~n",[Other]). - + lists:foreach(PrintSystemSup, supervisor:which_children(Pid)). + + print_system_sup(D, {Ref,Pid,supervisor,[ssh_subsystem_sup]}) when is_reference(Ref), - is_pid(Pid) -> + is_pid(Pid) -> PrintChannels = fun(X) -> print_channels(D,X) end, lists:foreach(PrintChannels, supervisor:which_children(Pid)); -print_system_sup(D, {{ssh_acceptor_sup,LocalHost,LocalPort}, Pid,supervisor, [ssh_acceptor_sup]}) when is_pid(Pid) -> - io:format(D, " [Acceptor for ~s]~n",[fmt_host_port({LocalHost,LocalPort})]); -print_system_sup(D, Other) -> - io:format(D, " [[Other 3: ~p]]~n",[Other]). +print_system_sup(D, {{ssh_acceptor_sup,LocalHost,LocalPort,Profile}, Pid, supervisor, [ssh_acceptor_sup]}) when is_pid(Pid) -> + io__format(D, ?INDENT?INDENT"[Acceptor Pid ~p]~n",[Pid]). -print_channels(D, {{server,ssh_channel_sup,_,_},Pid,supervisor,[ssh_channel_sup]}) when is_pid(Pid) -> - PrintChannel = fun(X) -> print_channel(D,X) end, - lists:foreach(PrintChannel, supervisor:which_children(Pid)); -print_channels(D, Other) -> - io:format(D, " [[Other 4: ~p]]~n",[Other]). +print_channels(D, {{server,ssh_channel_sup,_,_},Pid,supervisor,[ssh_channel_sup]}) when is_pid(Pid) -> + Children = supervisor:which_children(Pid), + ChannelPids = [P || {R,P,worker,[ssh_channel]} <- Children, + is_pid(P), + is_reference(R)], + case ChannelPids of + [] -> io__format(D, ?INDENT?INDENT"No channels~n",[]); + [Ch1Pid|_] -> + {{ConnManager,_}, _Str} = ssh_channel:get_print_info(Ch1Pid), + {{_,Remote},_} = ssh_connection_handler:get_print_info(ConnManager), + io__format(D, ?INDENT?INDENT"Remote: ~s ConnectionRef = ~p~n",[fmt_host_port(Remote),ConnManager]), + lists:foreach(fun(P) -> print_ch(D,P) end, ChannelPids) + end; +print_channels(_D, {{server,ssh_connection_sup,_,_},Pid,supervisor,[ssh_connection_sup]}) when is_pid(Pid) -> + ok. % The supervisor of the connections socket owning process -print_channel(D, {Ref,Pid,worker,[ssh_channel]}) when is_reference(Ref), - is_pid(Pid) -> +print_ch(D, Pid) -> {{ConnManager,ChannelID}, Str} = ssh_channel:get_print_info(Pid), - {{Local,Remote},StrM} = ssh_connection_handler:get_print_info(ConnManager), - io:format(D, ' ch ~p: ~s ~s',[ChannelID, StrM, Str]), - io:format(D, " Local=~s Remote=~s~n",[fmt_host_port(Local),fmt_host_port(Remote)]); -print_channel(D, Other) -> - io:format(D, " [[Other 5: ~p]]~n",[Other]). - + {_LocalRemote,StrM} = ssh_connection_handler:get_print_info(ConnManager), + io__format(D, ?INDENT?INDENT?INDENT"ch ~p: ~s ~s~n",[ChannelID, StrM, Str]). + %%%================================================================ -define(inc(N), (N+4)). walk_sups(D, StartPid) -> - io:format(D, "Start at ~p, ~s.~n",[StartPid,dead_or_alive(StartPid)]), + io__format(D, "Start at ~p, ~s.~n",[StartPid,dead_or_alive(StartPid)]), walk_sups(D, children(StartPid), _Indent=?inc(0)). walk_sups(D, [H={_,Pid,_,_}|T], Indent) -> - indent(D, Indent), io:format(D, '~200p ~p is ~s~n',[H,Pid,dead_or_alive(Pid)]), + indent(D, Indent), io__format(D, '~200p ~p is ~s~n',[H,Pid,dead_or_alive(Pid)]), case H of {_,_,supervisor,[ssh_connection_handler]} -> ok; {_,Pid,supervisor,_} -> walk_sups(D, children(Pid), ?inc(Indent)); @@ -159,7 +174,7 @@ dead_or_alive(Pid) when is_pid(Pid) -> _ -> "alive" end. -indent(D, I) -> io:format(D,'~*c',[I,$ ]). +indent(D, I) -> io__format(D,'~*c',[I,$ ]). children(Pid) -> Parent = self(), @@ -181,11 +196,11 @@ underline(D, Str) -> underline(D, Str, LineChar) -> Len = lists:flatlength(Str), - io:format(D, '~s~n',[Str]), + io__format(D, '~s~n',[Str]), line(D,Len,LineChar). line(D, Len, Char) -> - io:format(D, '~*c~n', [Len,Char]). + io__format(D, '~*c~n', [Len,Char]). datetime() -> @@ -199,5 +214,25 @@ fmt_host_port({Host,Port}) -> io_lib:format('~s:~p',[Host,Port]). nyi(D) -> - io:format(D,'Not yet implemented~n',[]), + io__format(D,'Not yet implemented~n',[]), nyi. + +%%%################################################################ + +io__nl(D) when is_atom(D) -> io:nl(D); +io__nl(P) when is_pid(P) -> P ! {string,io_lib:nl()}. + +io__format(D, Fmt, Args) when is_atom(D) -> io:format(D, Fmt, Args); +io__format(P, Fmt, Args) when is_pid(P) -> P ! {string,io_lib:format(Fmt, Args)}. + + +init() -> loop([]). + +loop(Acc) -> + receive + {string,Str} -> + loop([Str|Acc]); + {get,Who} -> + Who ! {result,lists:flatten(lists:reverse(Acc))} + end. + -- cgit v1.2.3