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yaws_server.erl
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yaws_server.erl
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%%%----------------------------------------------------------------------
%%% File : yaws_server.erl
%%% Author : Claes Wikstrom <klacke@hyber.org>
%%% Purpose :
%%% Created : 16 Jan 2002 by Claes Wikstrom <klacke@hyber.org>
%%%----------------------------------------------------------------------
-module(yaws_server).
-author('klacke@hyber.org').
-behaviour(gen_server).
-include("../include/yaws.hrl").
-include("../include/yaws_api.hrl").
-include("yaws_debug.hrl").
-include_lib("kernel/include/file.hrl").
-include_lib("kernel/include/inet.hrl").
-export([mappath/3, vdirpath/3]).
%% External exports
-export([start_link/1]).
-export([safe_decode_path/1]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2,
code_change/3]).
-export([status/0,
getconf/0,
stats/0,
gs_status/0,
ssi/3,ssi/5,ssi/6
]).
%% internal exports
-export([gserv/3,acceptor0/2, load_and_run/2, done_or_continue/0,
accumulate_content/1, deliver_accumulated/5, setup_dirs/1,
deliver_dyn_part/8, finish_up_dyn_file/2, gserv_loop/4
]).
-export(['GET'/4,
'POST'/4,
'HEAD'/4,
'TRACE'/4,
'OPTIONS'/4,
'PUT'/4,
'DELETE'/4,
'PATCH'/4]).
-import(lists, [member/2, foreach/2, map/2,
flatten/1, reverse/1]).
-import(yaws_api, [ehtml_expand/1]).
-record(gs, {gconf,
group, %% list of #sconf{} s
ssl, %% ssl | nossl
certinfo, %% undefined | #certinfo{}
l, %% listen socket
mnum = 0,
connections = 0, %% number of TCP connections opened now
sessions = 0, %% number of active HTTP sessions
reqs = 0}). %% total number of processed HTTP requests
-record(state, {gc, %% Global conf #gc{} record
pairs, %% [{GservPid, ScList}]
mnum = 0, %% dyn compiled erl module number
embedded %% true if in embedded mode, false otherwise
}).
%% undefined | mtime from #file_info
-record(certinfo, {keyfile,
certfile,
cacertfile
}).
-define(elog(X,Y), error_logger:info_msg("*elog ~p:~p: " X,
[?MODULE, ?LINE | Y])).
start_link(A) ->
gen_server:start_link({local, yaws_server}, yaws_server, A, []).
status() ->
gen_server:call(?MODULE, status, 10000).
gs_status() ->
[_|Pids] = gen_server:call(?MODULE, pids, 10000),
lists:map(
fun(P) ->
P ! {self(), status},
receive {P, Stat} -> Stat end
end, Pids).
getconf() ->
gen_server:call(?MODULE,getconf, infinity).
stats() ->
{_S, Time} = status(),
Diff = calendar:time_difference(Time, calendar:local_time()),
L = [begin
SC = hd(GS#gs.group),
{SC#sconf.listen, SC#sconf.port,
GS#gs.connections, GS#gs.sessions, GS#gs.reqs}
end || GS <- gs_status()],
{Diff, L}.
l2a(L) when is_list(L) -> list_to_atom(L);
l2a(A) when is_atom(A) -> A.
%%----------------------------------------------------------------------
%% Func: init/1
%% Returns: {ok, State} |
%% {ok, State, Timeout} |
%% ignore |
%% {stop, Reason}
%%----------------------------------------------------------------------
init(Env) -> %% #env{Trace, TraceOut, Conf, RunMod, Embedded, Id}) ->
process_flag(trap_exit, true),
put(start_time, calendar:local_time ()), %% for uptime
case Env#env.embedded of
false ->
Config = (catch yaws_config:load(Env)),
case Config of
{ok, Gconf, Sconfs} ->
erase(logdir),
?Debug("GC = ~s~n", [?format_record(Gconf, gconf)]),
lists:foreach(
fun(Group) ->
lists:foreach(
fun(_SC) ->
?Debug("SC = ~s~n",
[?format_record(_SC, sconf)])
end, Group)
end, Sconfs),
yaws_log:setup(Gconf, Sconfs),
yaws_trace:setup(Gconf),
init2(Gconf, Sconfs, Env#env.runmod,
Env#env.embedded, true);
{error, E} ->
case erase(logdir) of
undefined ->
error_logger:error_msg("Yaws: Bad conf: ~p~n",[E]),
init:stop(),
{stop, E};
Dir ->
GC = yaws_config:make_default_gconf(true,
Env#env.id),
yaws_log:setup(GC#gconf{logdir = Dir}, []),
error_logger:error_msg("Yaws: bad conf: ~s "
"terminating~n",[E]),
init:stop(),
{stop, E}
end;
EXIT ->
error_logger:format("FATAL ~p~n", [EXIT]),
erlang:error(badconf)
end;
true ->
{ok, #state{gc = undefined,
embedded = Env#env.embedded,
pairs = [],
mnum = 0}}
end.
init2(GC, Sconfs, RunMod, Embedded, FirstTime) ->
put(gc, GC),
case GC#gconf.mnesia_dir of
MD when length(MD) > 0 ->
yaws_debug:format("loading mnesia ~p~n", [MD]),
application:set_env(mnesia,dir,MD),
mnesia:start();
_ ->
ok
end,
foreach(
fun(D) ->
yaws_debug:format("Add path ~p~n", [D]),
code:add_pathz(D)
end, GC#gconf.ebin_dir),
yaws_debug:format("Running with id=~p (localinstall=~p) ~n"
"~s"
"Logging to directory ~p~n",
[GC#gconf.id, yaws_generated:is_local_install(),
if ?gc_has_debug(GC) ->
"Running with debug checks "
"turned on (slower server) \n";
true ->
""
end,
GC#gconf.logdir]),
case Embedded of
false ->
setup_dirs(GC),
case yaws_ctl:start(GC, FirstTime) of
ok ->
ok;
{error, RSN} ->
%% Must call init stop here otherwise heart
%% will restart us
error_logger:format("Failed to start: ~s~n", [RSN]),
init:stop(),
receive nothing -> ok end
end;
true ->
ok
end,
runmod(RunMod, GC),
L2 = lists:zf(
fun(Group) -> start_group(GC, Group) end,
Sconfs),
{ok, #state{gc = GC,
pairs = L2,
mnum = 0,
embedded = Embedded}}.
start_group(GC, Group) ->
FailOnBind = ?gc_fail_on_bind_err(GC),
case proc_lib:start_link(?MODULE, gserv, [self(), GC, Group]) of
{error, F, A} when FailOnBind == false ->
error_logger:error_msg(F, A),
false;
{error, F, A} ->
error_logger:error_msg(F, A),
erlang:error(badbind);
{error, Reason} when FailOnBind == false ->
error_logger:error_msg("FATAL: ~p~n", [Reason]),
false;
{error, Reason} ->
error_logger:error_msg("FATAL: ~p~n", [Reason]),
erlang:error(badbind);
{Pid, SCs} ->
{true, {Pid, SCs}};
none ->
false
end.
%%----------------------------------------------------------------------
%% Func: handle_call/3
%% Returns: {reply, Reply, State} |
%% {reply, Reply, State, Timeout} |
%% {noreply, State} |
%% {noreply, State, Timeout} |
%% {stop, Reason, Reply, State} | (terminate/2 is called)
%% {stop, Reason, State} (terminate/2 is called)
%%----------------------------------------------------------------------
handle_call(status, _From, State) ->
Reply = {State, get(start_time)},
{reply, Reply, State};
handle_call(id, _From, State) ->
{reply, (State#state.gc)#gconf.id, State};
handle_call(pids, _From, State) -> %% for gprof
L = map(fun(X) ->element(1, X) end, State#state.pairs),
{reply, [self() | L], State};
handle_call(mnum, _From, State) ->
Mnum = State#state.mnum +1,
{reply, Mnum, State#state{mnum = Mnum}};
%% This is a brutal restart of everything
handle_call({setconf, GC, Groups}, _From, State) ->
%% First off, terminate all currently running processes
Curr = map(fun(X) ->element(1, X) end, State#state.pairs),
foreach(fun(Pid) ->
gserv_stop(Pid)
end, Curr),
{ok, State2} = init2(GC, Groups, undef, State#state.embedded, false),
{reply, ok, State2};
handle_call(getconf, _From, State) ->
Groups = map(fun({_Pid, SCs}) -> SCs end, State#state.pairs),
{reply, {ok, State#state.gc, Groups}, State};
%% If cert has changed, server will stop implicitly
handle_call(check_certs, _From, State) ->
L = lists:map(fun({Pid, _SCs}) ->
Pid ! {check_cert_changed, self()},
receive {Pid, YesNo} ->
YesNo
end
end, State#state.pairs),
{reply, L, State};
handle_call({update_sconf, NewSc}, From, State) ->
case yaws_config:search_sconf(NewSc, State#state.pairs) of
{Pid, OldSc, _Group} ->
case yaws_config:eq_sconfs(OldSc,NewSc) of
true ->
error_logger:info_msg("Keeping conf for ~s intact\n",
[yaws:sconf_to_srvstr(OldSc)]),
{reply, ok, State};
false ->
Pid ! {update_sconf, NewSc, OldSc, From, self()},
receive
{updated_sconf, Pid, NewSc2} ->
P2 = yaws_config:update_sconf(NewSc2,
State#state.pairs),
{noreply, State#state{pairs = P2}}
after 2000 ->
{reply, {error, "Failed to update new conf"}, State}
end
end;
false ->
{reply, {error, "No matching group"}, State}
end;
handle_call({delete_sconf, SC}, From, State) ->
case yaws_config:search_sconf(SC, State#state.pairs) of
{Pid, OldSc, Group} when length(Group) == 1 ->
error_logger:info_msg("Terminate whole ~s virt server group \n",
[yaws:sconf_to_srvstr(OldSc)]),
gserv_stop(Pid),
NewPairs = lists:keydelete(Pid, 1, State#state.pairs),
{reply, ok, State#state{pairs = NewPairs}};
{Pid, OldSc, _Group} ->
Pid ! {delete_sconf, OldSc, From},
P2 = yaws_config:delete_sconf(OldSc, State#state.pairs),
{noreply, State#state{pairs = P2}};
false ->
{reply, {error, "No matching group"}, State}
end;
handle_call({add_sconf, SC}, From, State) ->
case yaws_config:search_group(SC, State#state.pairs) of
[{Pid, Group}] ->
Pid ! {add_sconf, From, SC, self()},
receive
{added_sconf, Pid, SC2} ->
P2 = lists:keyreplace(Pid, 1, State#state.pairs,
{Pid, Group ++ [SC2]}),
{noreply, State#state{pairs = P2}}
after 2000 ->
{reply, {error, "Failed to add new conf"}, State}
end;
[] ->
%% Need to create a new group
error_logger:info_msg("Creating new virt server ~s\n",
[yaws:sconf_to_srvstr(SC)]),
GC = State#state.gc,
case start_group(GC, [SC]) of
false ->
{reply, ok, State};
{true, Pair} ->
P2 = [Pair | State#state.pairs],
{reply, ok, State#state{pairs = P2}}
end
end;
handle_call({update_gconf, GC}, _From, State) ->
lists:foreach(fun({Pid, _Group}) ->
Pid ! {update_gconf, GC}
end, State#state.pairs),
%% no need to tell yaws_log, new vals must be compatible
put(gc, GC),
{reply, ok, State#state{gc = GC}}.
%%----------------------------------------------------------------------
%% Func: handle_cast/2
%% Returns: {noreply, State} |
%% {noreply, State, Timeout} |
%% {stop, Reason, State} (terminate/2 is called)
%%----------------------------------------------------------------------
handle_cast(_Msg, State) ->
{noreply, State}.
%%----------------------------------------------------------------------
%% Func: handle_info/2
%% Returns: {noreply, State} |
%% {noreply, State, Timeout} |
%% {stop, Reason, State} (terminate/2 is called)
%%----------------------------------------------------------------------
handle_info({Pid, certchanged}, State) ->
{noreply, State#state{pairs = lists:keydelete(Pid, 1, State#state.pairs)}};
handle_info({'EXIT', Pid, Reason}, State) ->
case lists:keysearch(Pid, 1, State#state.pairs) of
{value, _} ->
%% one of our gservs died
error_logger:format("yaws: FATAL gserv died ~p~n", [Reason]),
erlang:error(restartme);
false ->
ignore
end,
{noreply, State};
handle_info(_Msg, State) ->
?Debug("GOT ~p~n", [_Msg]),
{noreply, State}.
%%----------------------------------------------------------------------
%% Func: terminate/2
%% Purpose: Shutdown the server
%% Returns: any (ignored by gen_server)
%%----------------------------------------------------------------------
terminate(_Reason, State) ->
foreach(fun({Pid, _GP}) -> gserv_stop(Pid) end, State#state.pairs),
ok.
do_listen(GC, SC) ->
case SC#sconf.ssl of
undefined ->
{nossl, undefined, gen_tcp_listen(SC#sconf.port, listen_opts(SC))};
SSL ->
{ssl, certinfo(SSL),
ssl:listen(SC#sconf.port, ssl_listen_opts(GC, SC, SSL))}
end.
certinfo(SSL) ->
#certinfo{
keyfile = if SSL#ssl.keyfile /= undefined ->
case file:read_file_info(SSL#ssl.keyfile) of
{ok, FI} ->
FI#file_info.mtime;
_ ->
undefined
end;
true ->
undefined
end,
certfile = if SSL#ssl.certfile /= undefined ->
case file:read_file_info(SSL#ssl.certfile) of
{ok, FI} ->
FI#file_info.mtime;
_ ->
undefined
end;
true ->
undefined
end,
cacertfile = if SSL#ssl.cacertfile /= undefined ->
case file:read_file_info(SSL#ssl.cacertfile) of
{ok, FI} ->
FI#file_info.mtime;
_ ->
undefined
end;
true ->
undefined
end
}.
gen_tcp_listen(Port, Opts) ->
?Debug("Listen ~p:~p~n", [Port, Opts]),
gen_tcp:listen(Port, Opts).
gserv(_Top, _, []) ->
proc_lib:init_ack(none);
%% One server per IP we listen to
gserv(Top, GC, Group0) ->
process_flag(trap_exit, true),
?TC([{record, GC, gconf}]),
put(gc, GC),
put(top, Top),
Group1 = map(fun(SC) -> setup_ets(SC)
end, Group0),
Group = map(fun(SC) ->
case ?sc_has_statistics(SC) of
true ->
start_stats(SC);
false ->
SC
end
end, Group1),
SC = hd(Group),
case do_listen(GC, SC) of
{SSLBOOL, CertInfo, {ok, Listen}} ->
lists:foreach(fun(XSC) -> call_start_mod(XSC) end, Group),
error_logger:info_msg(
"Yaws: Listening to ~s:~w for <~p> virtual servers:~s~n",
[inet_parse:ntoa(SC#sconf.listen),
SC#sconf.port,
length(Group),
catch map(
fun(S) ->
io_lib:format("~n - ~s under ~s",
[yaws:sconf_to_srvstr(S),
S#sconf.docroot])
end, Group)
]),
proc_lib:init_ack({self(), Group}),
GS = #gs{gconf = GC,
group = Group,
ssl = SSLBOOL,
certinfo = CertInfo,
l = Listen},
Last = initial_acceptor(GS),
gserv_loop(GS#gs{sessions = 1}, [], 0, Last);
{_,_,Err} ->
error_logger:format("Yaws: Failed to listen ~s:~w : ~p~n",
[inet_parse:ntoa(SC#sconf.listen),
SC#sconf.port, Err]),
proc_lib:init_ack({error, "Can't listen to socket: ~p ",[Err]}),
exit(normal)
end.
setup_dirs(GC) ->
Dir = yaws:id_dir(GC#gconf.id),
Ctl = yaws:ctl_file(GC#gconf.id),
filelib:ensure_dir(Ctl),
case file:list_dir(Dir) of
{ok, LL} ->
foreach(
fun(F) ->
file:delete(filename:join([Dir, F]))
end, LL -- ["CTL"]);
{error, RSN} ->
error_logger:format("Failed to list ~p probably "
"due to permission errs: ~p",
[Dir, RSN]),
erlang:error(RSN)
end.
setup_ets(SC) ->
E = ets:new(yaws_code, [public, set]),
ets:insert(E, {num_files, 0}),
ets:insert(E, {num_bytes, 0}),
SC#sconf{ets = E}.
clear_ets_complete(SC) ->
case SC#sconf.ets of
undefined ->
setup_ets(SC);
E ->
ets:match_delete(E,'_'),
ets:insert(E, {num_files, 0}),
ets:insert(E, {num_bytes, 0}),
SC
end.
start_stats(SC) ->
{ok, Pid} = yaws_stats:start_link(),
SC#sconf{stats = Pid}.
gserv_loop(GS, Ready, Rnum, Last) ->
receive
{From , status} ->
From ! {self(), GS},
?MODULE:gserv_loop(GS, Ready, Rnum, Last);
{_From, next, Accepted} when Ready == [] ->
close_accepted_if_max(GS,Accepted),
New = acceptor(GS),
GS2 = GS#gs{sessions = GS#gs.sessions + 1,
connections = GS#gs.connections + 1},
?MODULE:gserv_loop(GS2, Ready, Rnum, New);
{_From, next, Accepted} ->
close_accepted_if_max(GS,Accepted),
[{_Then, R}|RS] = Ready,
R ! {self(), accept},
GS2 = GS#gs{connections=GS#gs.connections + 1},
?MODULE:gserv_loop(GS2, RS, Rnum-1, R);
{_From, decrement} ->
GS2 = GS#gs{connections=GS#gs.connections - 1},
?MODULE:gserv_loop(GS2, Ready, Rnum, Last);
{From, done_client, Int} ->
GS2 = if
Int == 0 -> GS#gs{connections = GS#gs.connections - 1};
Int > 0 -> GS#gs{reqs = GS#gs.reqs+Int,
connections = GS#gs.connections - 1}
end,
PoolSize = (GS#gs.gconf)#gconf.acceptor_pool_size,
if
Rnum == PoolSize ->
From ! {self(), stop},
?MODULE:gserv_loop(GS2, Ready, Rnum, Last);
Rnum < PoolSize ->
%% cache this process for 10 secs
?MODULE:gserv_loop(GS2, [{now(), From} | Ready], Rnum+1, Last)
end;
{'EXIT', Pid, Reason} ->
case get(top) of
Pid when Reason /= shutdown ->
error_logger:format("Top proc died, terminate gserv",[]),
{links, Ls} = process_info(self(), links),
foreach(fun(X) -> unlink(X), exit(X, shutdown) end, Ls),
exit(noserver);
Pid ->
{links, Ls} = process_info(self(), links),
foreach(fun(X) -> unlink(X), exit(X, shutdown) end, Ls),
exit(normal);
_ when Reason == failaccept ->
error_logger:format(
"Accept proc died, terminate gserv",[]),
{links, Ls} = process_info(self(), links),
foreach(fun(X) -> unlink(X), exit(X, shutdown) end, Ls),
exit(noserver);
_ ->
GS2 = GS#gs{sessions = GS#gs.sessions - 1},
if
Pid == Last ->
%% probably died due to new code loaded; if we
%% don't start a new acceptor here we end up with
%% no active acceptor
error_logger:format("Last acceptor died (~p), "
"restart it", [Reason]),
New = acceptor(GS),
?MODULE:gserv_loop(GS2, Ready, Rnum, New);
true ->
case lists:keysearch(Pid, 2, Ready) of
{value, _} ->
Ready1 = lists:keydelete(Pid, 2, Ready),
?MODULE:gserv_loop(GS2, Ready1, Rnum-1, Last);
false ->
?MODULE:gserv_loop(GS2, Ready, Rnum, Last)
end
end
end;
{From, stop} ->
unlink(From),
%% Close the socket and stop acceptors
stop_ready(Ready, Last),
if
GS#gs.ssl == nossl -> gen_tcp:close(GS#gs.l);
GS#gs.ssl == ssl -> ssl:close(GS#gs.l)
end,
%% Stop yaws_stats processes, if needed
foreach(fun(#sconf{stats=Pid}) when is_pid(Pid) ->
yaws_stats:stop(Pid);
(_) ->
ok
end, GS#gs.group),
%% Close softly all opened connections
{links, Ls1} = process_info(self(), links),
foreach(fun(X) when is_pid(X) ->
unlink(X),
X ! {self(), suspend},
exit(X, shutdown);
(_) -> ok
end, Ls1),
WaitFun = fun(_, 0, Pids) -> Pids;
(_, _, []) -> [];
(F, Secs, Pids0) ->
timer:sleep(1000),
Pids1 = lists:filter(fun(X) when is_pid(X) ->
is_process_alive(X);
(_) ->
false
end, Pids0),
F(F, Secs-1, Pids1)
end,
Ls2 = WaitFun(WaitFun, 60, Ls1),
%% Kill all remaining connections
foreach(fun(X) -> exit(X, kill) end, Ls2),
From ! {self(), ok},
exit(normal);
%% This code will shutdown all ready procs as well as the
%% acceptor()
{update_sconf, NewSc, OldSc, From, Updater} ->
case lists:member(OldSc, GS#gs.group) of
false ->
error_logger:error_msg("gserv: No found SC ~p/~p~n",
[OldSc, GS#gs.group]),
erlang:error(nosc);
true ->
Pid = OldSc#sconf.stats,
error_logger:info_msg("update_sconf: Stats pid ~p~n",[Pid]),
case Pid of
undefined ->
ok;
Pid when is_pid(Pid) ->
yaws_stats:stop(Pid)
end,
NewSc1 = case ?sc_has_statistics(NewSc) of
true ->
start_stats(NewSc);
false ->
NewSc
end,
stop_ready(Ready, Last),
NewSc2 = clear_ets_complete(NewSc1),
%% Need to insert the sconf at the same position
%% it previously was
NewG = lists:map(fun(Sc) when Sc == OldSc->
NewSc2;
(Other) ->
Other
end, GS#gs.group),
GS2 = GS#gs{group = NewG},
Ready2 = [],
Updater ! {updated_sconf, self(), NewSc2},
gen_server:reply(From, ok),
error_logger:info_msg("Updating sconf for server ~s~n",
[yaws:sconf_to_srvstr(NewSc2)]),
New = acceptor(GS2),
?MODULE:gserv_loop(GS2, Ready2, 0, New)
end;
{delete_sconf, OldSc, From} ->
case lists:member(OldSc, GS#gs.group) of
false ->
error_logger:error_msg("gserv: No found SC ~n",[]),
erlang:error(nosc);
true ->
Pid = OldSc#sconf.stats,
stop_ready(Ready, Last),
GS2 = GS#gs{group = lists:delete(OldSc,GS#gs.group)},
Ready2 = [],
case ?sc_has_statistics(OldSc) of
true ->
error_logger:info_msg("delete_sconf: Pid= ~p~n",
[Pid]),
yaws_stats:stop(Pid);
false ->
ok
end,
ets:delete(OldSc#sconf.ets),
gen_server:reply(From, ok),
error_logger:info_msg("Deleting sconf for server ~s~n",
[yaws:sconf_to_srvstr(OldSc)]),
New = acceptor(GS2),
?MODULE:gserv_loop(GS2, Ready2, 0, New)
end;
{add_sconf, From, SC0, Adder} ->
SC = case ?sc_has_statistics(SC0) of
true ->
{ok, Pid} = yaws_stats:start_link(),
error_logger:info_msg("add_sconf: Pid= ~p~n", [Pid]),
SC0#sconf{stats=Pid};
false ->
SC0
end,
stop_ready(Ready, Last),
SC2 = setup_ets(SC),
GS2 = GS#gs{group = GS#gs.group ++ [SC2]},
Ready2 = [],
Adder ! {added_sconf, self(), SC2},
gen_server:reply(From, ok),
error_logger:info_msg("Adding sconf for server ~s~n",
[yaws:sconf_to_srvstr(SC)]),
New = acceptor(GS2),
?MODULE:gserv_loop(GS2, Ready2, 0, New);
{check_cert_changed, From} ->
Changed =
case GS#gs.ssl of
ssl ->
CertInfo = GS#gs.certinfo,
case lists:any(
fun(SC) ->
certinfo(SC#sconf.ssl) =/= CertInfo end,
GS#gs.group) of
true ->
yes;
false ->
no
end;
nossl ->
no
end,
if
Changed == no ->
From ! {self(), no},
?MODULE:gserv_loop(GS, Ready, Rnum, Last);
Changed == yes ->
error_logger:info_msg(
"Stopping ~s due to cert change\n",
[yaws:sconf_to_srvstr(hd(GS#gs.group))]),
{links, Ls0} = process_info(self(), links),
Ls = Ls0 -- [get(top)],
foreach(fun(X) -> unlink(X), exit(X, shutdown) end, Ls),
From ! {self(), yes},
unlink(get(top)),
get(top) ! {self(), certchanged},
exit(normal)
end;
{update_gconf, GC} ->
stop_ready(Ready, Last),
GS2 = GS#gs{gconf = GC},
Ready2 = [],
put(gc, GC),
error_logger:info_msg("Updating gconf \n",[]),
New = acceptor(GS2),
?MODULE:gserv_loop(GS2, Ready2, 0, New)
after (10 * 1000) ->
%% collect old procs, to save memory
{NowMega, NowSecs, _} = now(),
R2 = lists:filter(fun({{ThenMega, ThenSecs, _}, Pid}) ->
if
NowMega > ThenMega;
(NowSecs > (ThenSecs + 8)) ->
Pid ! {self(), stop},
false;
true ->
true
end
end, Ready),
?MODULE:gserv_loop(GS, R2, length(R2), Last)
end.
stop_ready(Ready, Last) ->
error_logger:info_msg("stop_ready(~p, ~p)~n", [Ready, Last]),
unlink(Last),
exit(Last, shutdown),
lists:foreach(
fun({_,Pid}) ->
Pid ! {self(), stop}
end, Ready).
gserv_stop(Gpid) ->
Gpid ! {self(), stop},
receive
{Gpid, ok} ->
ok
end.
call_start_mod(SC) ->
case SC#sconf.start_mod of
undefined ->
ok;
Mod0 ->
Mod = l2a(Mod0),
case code:ensure_loaded(Mod) of
{module, Mod} ->
error_logger:info_msg(
"Yaws: calling start_mod: ~p:start/1~n", [Mod]),
spawn(Mod, start, [SC]);
Err ->
error_logger:format("Cannot load module ~p: ~p~n",
[Mod,Err])
end
end.
listen_opts(SC) ->
InetType = if
is_tuple( SC#sconf.listen), size( SC#sconf.listen) == 8 ->
[inet6];
true ->
[]
end,
[binary,
{ip, SC#sconf.listen},
{packet, http},
{packet_size, 16#4000},
{recbuf, 8192},
{reuseaddr, true},
{active, false}
| proplists:get_value(listen_opts, SC#sconf.soptions, [])
] ++ InetType.
ssl_listen_opts(GC, SC, SSL) ->
InetType = if
is_tuple( SC#sconf.listen), size( SC#sconf.listen) == 8 ->
[inet6];
true ->
[]
end,
[binary,
{ip, SC#sconf.listen},
{packet, http},
{packet_size, 16#4000},
{recbuf, 8192},
{reuseaddr, true},
{active, false} | ssl_listen_opts(GC, SSL)] ++ InetType ++
proplists:get_value(listen_opts, SC#sconf.soptions, []).
ssl_listen_opts(GC, SSL) ->
L = [if SSL#ssl.keyfile /= undefined ->
{keyfile, SSL#ssl.keyfile};
true ->
false
end,
if SSL#ssl.certfile /= undefined ->
{certfile, SSL#ssl.certfile};
true ->
false
end,
if SSL#ssl.cacertfile /= undefined ->
{cacertfile, SSL#ssl.cacertfile};
true ->
false
end,
if SSL#ssl.verify /= undefined ->
{verify, SSL#ssl.verify};
true ->
false
end,
if SSL#ssl.fail_if_no_peer_cert /= undefined ->
{fail_if_no_peer_cert, SSL#ssl.fail_if_no_peer_cert};
true ->
false
end,
if SSL#ssl.password /= undefined ->
{password, SSL#ssl.password};
true ->
false
end,
if SSL#ssl.ciphers /= undefined ->
{ciphers, SSL#ssl.ciphers};
true ->
false
end,
if SSL#ssl.depth /= undefined ->
{depth, SSL#ssl.depth};
true ->
false
end,
if ?gc_use_old_ssl(GC) ->
{ssl_imp, old};
true ->
{ssl_imp, new}
end
],
filter_false(L).
filter_false(L) ->
[X || X <- L, X /= false].
do_accept(GS) when GS#gs.ssl == nossl ->
?Debug("wait in accept ... ~n",[]),
gen_tcp:accept(GS#gs.l);
do_accept(GS) when GS#gs.ssl == ssl ->
ssl:transport_accept(GS#gs.l).
initial_acceptor(GS) ->
acceptor(GS).
acceptor(GS) ->
case (GS#gs.gconf)#gconf.process_options of
[] ->
proc_lib:spawn_link(?MODULE, acceptor0, [GS, self()]);
Opts ->
%% as we tightly controlled what is set in options, we can
%% blindly add "link" to get a linked process as per default
%% case and use the provided options.
proc_lib:spawn_opt(?MODULE, acceptor0, [GS, self()], [link | Opts])
end.
acceptor0(GS, Top) ->
?TC([{record, GS, gs}]),
put(gserv_pid, Top),
put(gc, GS#gs.gconf),
yaws_trace:open(),
X = do_accept(GS),
Top ! {self(), next, X},
case X of
{ok, Client} ->
if
GS#gs.ssl == ssl ->
case ssl:ssl_accept(
Client, (GS#gs.gconf)#gconf.keepalive_timeout
) of
ok ->
ok;
{error, closed} ->
Top ! {self(), decrement},
exit(normal);
{error, esslaccept} ->
%% Don't log SSL esslaccept to error log since it
%% seems this is what we get on portscans and
%% similar
?Debug("SSL accept failed: ~p~n", [esslaccept]),
Top ! {self(), decrement},
exit(normal);
{error, Reason} ->
error_logger:format("SSL accept failed: ~p~n",