--- /dev/null
+%%%----------------------------------------------------------------------
+%%% File : ejabberd_loglevel.erl
+%%% Author : Mickael Remond <mremond@process-one.net>
+%%% Purpose : Loglevel switcher.
+%%% Be careful: you should not have any ejabberd_logger module
+%%% as ejabberd_loglevel switcher is compiling and loading
+%%% dynamically a "virtual" ejabberd_logger module (Described
+%%% in a string at the end of this module).
+%%% Created : 29 Nov 2006 by Mickael Remond <mremond@process-one.net>
+%%%----------------------------------------------------------------------
+-module(ejabberd_loglevel).
+-author('mickael.remond@process-one.net').
+-svn('$Revision: 685 $ ').
+
+-export([set/1]).
+
+-define(LOGMODULE, "error_logger").
+
+%% Error levels:
+%% 0 -> No log
+%% 1 -> Critical
+%% 2 -> Error
+%% 3 -> Warning
+%% 4 -> Info
+%% 5 -> Debug
+set(Loglevel) when is_integer(Loglevel) ->
+ Forms = compile_string(?LOGMODULE, ejabberd_logger_src(Loglevel)),
+ load_logger(Forms, ?LOGMODULE, Loglevel);
+set(_) ->
+ exit("Loglevel must be an integer").
+
+%% --------------------------------------------------------------
+%% Compile a string into a module and returns the binary
+compile_string(Mod, Str) ->
+ Fname = Mod ++ ".erl",
+ {ok, Fd} = open_ram_file(Fname),
+ file:write(Fd, Str),
+ file:position(Fd, 0),
+ case epp_dodger:parse(Fd) of
+ {ok, Tree} ->
+ Forms = revert_tree(Tree),
+ close_ram_file(Fd),
+ Forms;
+ Error ->
+ close_ram_file(Fd),
+ Error
+ end.
+
+open_ram_file(Fname) ->
+ ram_file_io_server:start(self(), Fname, [read,write]).
+
+close_ram_file(Fd) ->
+ file:close(Fd).
+
+revert_tree(Tree) ->
+ [erl_syntax:revert(T) || T <- Tree].
+
+load_logger(Forms, Mod, Loglevel) ->
+ Fname = Mod ++ ".erl",
+ case compile:forms(Forms, [binary, {d,'LOGLEVEL',Loglevel}]) of
+ {ok, M, Bin} ->
+ code:load_binary(M, Fname, Bin);
+ Error ->
+ io:format("Error ~p~n", [Error])
+ end.
+
+%% --------------------------------------------------------------
+%% Code of the ejabberd logger, dynamically compiled and loaded
+%% This allows to dynamically change log level while keeping a
+%% very efficient code.
+ejabberd_logger_src(Loglevel) ->
+ L = integer_to_list(Loglevel),
+ "-module(ejabberd_logger).
+ -author('mickael.remond@process-one.net').
+ -svn('$Revision: 685 $ ').
+
+ -export([debug_msg/4,
+ info_msg/4,
+ warning_msg/4,
+ error_msg/4,
+ critical_msg/4]).
+
+ %% Helper functions
+ debug_msg(Module, Line, Format, Args) when " ++ L ++ " >= 5 ->
+ notify(info_msg,
+ \"D(~p:~p:~p) : \"++Format++\"~n\",
+ [self(), Module, Line]++Args);
+ debug_msg(_,_,_,_) -> ok.
+
+ info_msg(Module, Line, Format, Args) when " ++ L ++ " >= 4 ->
+ notify(info_msg,
+ \"I(~p:~p:~p) : \"++Format++\"~n\",
+ [self(), Module, Line]++Args);
+ info_msg(_,_,_,_) -> ok.
+
+ warning_msg(Module, Line, Format, Args) when " ++ L ++ " >= 3 ->
+ notify(error,
+ \"W(~p:~p:~p) : \"++Format++\"~n\",
+ [self(), Module, Line]++Args);
+ warning_msg(_,_,_,_) -> ok.
+
+ error_msg(Module, Line, Format, Args) when " ++ L ++ " >= 2 ->
+ notify(error,
+ \"E(~p:~p:~p) : \"++Format++\"~n\",
+ [self(), Module, Line]++Args);
+ error_msg(_,_,_,_) -> ok.
+
+ critical_msg(Module, Line, Format, Args) when " ++ L ++ " >= 1 ->
+ notify(error,
+ \"C(~p:~p:~p) : \"++Format++\"~n\",
+ [self(), Module, Line]++Args);
+ critical_msg(_,_,_,_) -> ok.
+
+ %% Distribute the message to the Erlang error logger
+ notify(Type, Format, Args) ->
+ LoggerMsg = {Type, group_leader(), {self(), Format, Args}},
+ gen_event:notify(error_logger, LoggerMsg).
+ ".
--- /dev/null
+%% ``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
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id$
+%%
+%% This file is mostly copied from Erlang file_io_server.erl
+%% See: http://www.erlang.org/ml-archive/erlang-questions/200607/msg00080.html
+%% for details on ram_file_io_server.erl (Erlang OTP R11B-2)
+-module(ram_file_io_server).
+
+%% A simple file server for io to one file instance per server instance.
+
+-export([format_error/1]).
+-export([start/3, start_link/3]).
+
+-record(state, {handle,owner,mref,buf,read_mode}).
+
+-define(PRIM_FILE, ram_file).
+-define(READ_SIZE_LIST, 128).
+-define(READ_SIZE_BINARY, (8*1024)).
+
+-define(eat_message(M, T), receive M -> M after T -> timeout end).
+
+%%%-----------------------------------------------------------------
+%%% Exported functions
+
+format_error({_Line, ?MODULE, Reason}) ->
+ io_lib:format("~w", [Reason]);
+format_error({_Line, Mod, Reason}) ->
+ Mod:format_error(Reason);
+format_error(ErrorId) ->
+ erl_posix_msg:message(ErrorId).
+
+start(Owner, FileName, ModeList)
+ when pid(Owner), list(FileName), list(ModeList) ->
+ do_start(spawn, Owner, FileName, ModeList).
+
+start_link(Owner, FileName, ModeList)
+ when pid(Owner), list(FileName), list(ModeList) ->
+ do_start(spawn_link, Owner, FileName, ModeList).
+
+%%%-----------------------------------------------------------------
+%%% Server starter, dispatcher and helpers
+
+do_start(Spawn, Owner, FileName, ModeList) ->
+ Self = self(),
+ Ref = make_ref(),
+ Pid =
+ erlang:Spawn(
+ fun() ->
+ %% process_flag(trap_exit, true),
+ {ReadMode,Opts} =
+ case lists:member(binary, ModeList) of
+ true ->
+ {binary,ModeList};
+ false ->
+ {list,[binary|ModeList]}
+ end,
+ case ?PRIM_FILE:open(FileName, Opts) of
+ {error, Reason} = Error ->
+ Self ! {Ref, Error},
+ exit(Reason);
+ {ok, Handle} ->
+ %% XXX must I handle R6 nodes here?
+ M = erlang:monitor(process, Owner),
+ Self ! {Ref, ok},
+ server_loop(
+ #state{handle = Handle,
+ owner = Owner,
+ mref = M,
+ buf = <<>>,
+ read_mode = ReadMode})
+ end
+ end),
+ Mref = erlang:monitor(process, Pid),
+ receive
+ {Ref, {error, _Reason} = Error} ->
+ erlang:demonitor(Mref),
+ receive {'DOWN', Mref, _, _, _} -> ok after 0 -> ok end,
+ Error;
+ {Ref, ok} ->
+ erlang:demonitor(Mref),
+ receive
+ {'DOWN', Mref, _, _, Reason} ->
+ {error, Reason}
+ after 0 ->
+ {ok, Pid}
+ end;
+ {'DOWN', Mref, _, _, Reason} ->
+ {error, Reason}
+ end.
+
+server_loop(#state{mref = Mref} = State) ->
+ receive
+ {file_request, From, ReplyAs, Request} when pid(From) ->
+ case file_request(Request, State) of
+ {reply, Reply, NewState} ->
+ file_reply(From, ReplyAs, Reply),
+ server_loop(NewState);
+ {error, Reply, NewState} ->
+ %% error is the same as reply, except that
+ %% it breaks the io_request_loop further down
+ file_reply(From, ReplyAs, Reply),
+ server_loop(NewState);
+ {stop, Reason, Reply, _NewState} ->
+ file_reply(From, ReplyAs, Reply),
+ exit(Reason)
+ end;
+ {io_request, From, ReplyAs, Request} when pid(From) ->
+ case io_request(Request, State) of
+ {reply, Reply, NewState} ->
+ io_reply(From, ReplyAs, Reply),
+ server_loop(NewState);
+ {error, Reply, NewState} ->
+ %% error is the same as reply, except that
+ %% it breaks the io_request_loop further down
+ io_reply(From, ReplyAs, Reply),
+ server_loop(NewState);
+ {stop, Reason, Reply, _NewState} ->
+ io_reply(From, ReplyAs, Reply),
+ exit(Reason)
+ end;
+ {'DOWN', Mref, _, _, Reason} ->
+ exit(Reason);
+ _ ->
+ server_loop(State)
+ end.
+
+file_reply(From, ReplyAs, Reply) ->
+ From ! {file_reply, ReplyAs, Reply}.
+
+io_reply(From, ReplyAs, Reply) ->
+ From ! {io_reply, ReplyAs, Reply}.
+
+%%%-----------------------------------------------------------------
+%%% file requests
+
+file_request({pread,At,Sz},
+ #state{handle=Handle,buf=Buf,read_mode=ReadMode}=State) ->
+ case position(Handle, At, Buf) of
+ {ok,_Offs} ->
+ case ?PRIM_FILE:read(Handle, Sz) of
+ {ok,Bin} when ReadMode==list ->
+ std_reply({ok,binary_to_list(Bin)}, State);
+ Reply ->
+ std_reply(Reply, State)
+ end;
+ Reply ->
+ std_reply(Reply, State)
+ end;
+file_request({pwrite,At,Data},
+ #state{handle=Handle,buf=Buf}=State) ->
+ case position(Handle, At, Buf) of
+ {ok,_Offs} ->
+ std_reply(?PRIM_FILE:write(Handle, Data), State);
+ Reply ->
+ std_reply(Reply, State)
+ end;
+file_request(sync,
+ #state{handle=Handle}=State) ->
+ case ?PRIM_FILE:sync(Handle) of
+ {error,_}=Reply ->
+ {stop,normal,Reply,State};
+ Reply ->
+ {reply,Reply,State}
+ end;
+file_request(close,
+ #state{handle=Handle}=State) ->
+ {stop,normal,?PRIM_FILE:close(Handle),State#state{buf= <<>>}};
+file_request({position,At},
+ #state{handle=Handle,buf=Buf}=State) ->
+ std_reply(position(Handle, At, Buf), State);
+file_request(truncate,
+ #state{handle=Handle}=State) ->
+ case ?PRIM_FILE:truncate(Handle) of
+ {error,_Reason}=Reply ->
+ {stop,normal,Reply,State#state{buf= <<>>}};
+ Reply ->
+ {reply,Reply,State}
+ end;
+file_request(Unknown,
+ #state{}=State) ->
+ Reason = {request, Unknown},
+ {error,{error,Reason},State}.
+
+std_reply({error,_}=Reply, State) ->
+ {error,Reply,State#state{buf= <<>>}};
+std_reply(Reply, State) ->
+ {reply,Reply,State#state{buf= <<>>}}.
+
+%%%-----------------------------------------------------------------
+%%% I/O request
+
+io_request({put_chars,Chars}, % binary(Chars) new in R9C
+ #state{buf= <<>>}=State) ->
+ put_chars(Chars, State);
+io_request({put_chars,Chars}, % binary(Chars) new in R9C
+ #state{handle=Handle,buf=Buf}=State) ->
+ case position(Handle, cur, Buf) of
+ {error,_}=Reply ->
+ {stop,normal,Reply,State#state{buf= <<>>}};
+ _ ->
+ put_chars(Chars, State#state{buf= <<>>})
+ end;
+io_request({put_chars,Mod,Func,Args},
+ #state{}=State) ->
+ case catch apply(Mod, Func, Args) of
+ Chars when list(Chars); binary(Chars) ->
+ io_request({put_chars,Chars}, State);
+ _ ->
+ {error,{error,Func},State}
+ end;
+io_request({get_until,_Prompt,Mod,Func,XtraArgs},
+ #state{}=State) ->
+ get_chars(io_lib, get_until, {Mod, Func, XtraArgs}, State);
+io_request({get_chars,_Prompt,N}, % New in R9C
+ #state{}=State) ->
+ get_chars(N, State);
+io_request({get_chars,_Prompt,Mod,Func,XtraArg}, % New in R9C
+ #state{}=State) ->
+ get_chars(Mod, Func, XtraArg, State);
+io_request({get_line,_Prompt}, % New in R9C
+ #state{}=State) ->
+ get_chars(io_lib, collect_line, [], State);
+io_request({setopts, Opts}, % New in R9C
+ #state{}=State) when list(Opts) ->
+ setopts(Opts, State);
+io_request({requests,Requests},
+ #state{}=State) when list(Requests) ->
+ io_request_loop(Requests, {reply,ok,State});
+io_request(Unknown,
+ #state{}=State) ->
+ Reason = {request,Unknown},
+ {error,{error,Reason},State}.
+
+
+
+%% Process a list of requests as long as the results are ok.
+
+io_request_loop([], Result) ->
+ Result;
+io_request_loop([_Request|_Tail],
+ {stop,_Reason,_Reply,_State}=Result) ->
+ Result;
+io_request_loop([_Request|_Tail],
+ {error,_Reply,_State}=Result) ->
+ Result;
+io_request_loop([Request|Tail],
+ {reply,_Reply,State}) ->
+ io_request_loop(Tail, io_request(Request, State)).
+
+
+
+%% I/O request put_chars
+%%
+put_chars(Chars, #state{handle=Handle}=State) ->
+ case ?PRIM_FILE:write(Handle, Chars) of
+ {error,_}=Reply ->
+ {stop,normal,Reply,State};
+ Reply ->
+ {reply,Reply,State}
+ end.
+
+
+%% Process the I/O request get_chars
+%%
+get_chars(0, #state{read_mode=ReadMode}=State) ->
+ {reply,cast(<<>>, ReadMode),State};
+get_chars(N, #state{buf=Buf,read_mode=ReadMode}=State)
+ when integer(N), N > 0, N =< size(Buf) ->
+ {B1,B2} = split_binary(Buf, N),
+ {reply,cast(B1, ReadMode),State#state{buf=B2}};
+get_chars(N, #state{handle=Handle,buf=Buf,read_mode=ReadMode}=State)
+ when integer(N), N > 0 ->
+ BufSize = size(Buf),
+ NeedSize = N-BufSize,
+ Size = max(NeedSize, ?READ_SIZE_BINARY),
+ case ?PRIM_FILE:read(Handle, Size) of
+ {ok, B} ->
+ if BufSize+size(B) < N ->
+ std_reply(cat(Buf, B, ReadMode), State);
+ true ->
+ {B1,B2} = split_binary(B, NeedSize),
+ {reply,cat(Buf, B1, ReadMode),State#state{buf=B2}}
+ end;
+ eof when BufSize==0 ->
+ {reply,eof,State};
+ eof ->
+ std_reply(cast(Buf, ReadMode), State);
+ {error,Reason}=Error ->
+ {stop,Reason,Error,State#state{buf= <<>>}}
+ end;
+get_chars(_N, #state{}=State) ->
+ {error,{error,get_chars},State}.
+
+get_chars(Mod, Func, XtraArg, #state{buf= <<>>}=State) ->
+ get_chars_empty(Mod, Func, XtraArg, start, State);
+get_chars(Mod, Func, XtraArg, #state{buf=Buf}=State) ->
+ get_chars_apply(Mod, Func, XtraArg, start, State#state{buf= <<>>}, Buf).
+
+get_chars_empty(Mod, Func, XtraArg, S,
+ #state{handle=Handle,read_mode=ReadMode}=State) ->
+ case ?PRIM_FILE:read(Handle, read_size(ReadMode)) of
+ {ok,Bin} ->
+ get_chars_apply(Mod, Func, XtraArg, S, State, Bin);
+ eof ->
+ get_chars_apply(Mod, Func, XtraArg, S, State, eof);
+ {error,Reason}=Error ->
+ {stop,Reason,Error,State}
+ end.
+
+get_chars_apply(Mod, Func, XtraArg, S0,
+ #state{read_mode=ReadMode}=State, Data0) ->
+ Data1 = case ReadMode of
+ list when binary(Data0) -> binary_to_list(Data0);
+ _ -> Data0
+ end,
+ case catch Mod:Func(S0, Data1, XtraArg) of
+ {stop,Result,Buf} ->
+ {reply,Result,State#state{buf=cast_binary(Buf)}};
+ {'EXIT',Reason} ->
+ {stop,Reason,{error,err_func(Mod, Func, XtraArg)},State};
+ S1 ->
+ get_chars_empty(Mod, Func, XtraArg, S1, State)
+ end.
+
+%% Convert error code to make it look as before
+err_func(io_lib, get_until, {_,F,_}) ->
+ F;
+err_func(_, F, _) ->
+ F.
+
+
+
+%% Process the I/O request setopts
+%%
+%% setopts
+setopts(Opts0, State) ->
+ Opts = proplists:substitute_negations([{list,binary}], Opts0),
+ case proplists:get_value(binary, Opts) of
+ true ->
+ {ok,ok,State#state{read_mode=binary}};
+ false ->
+ {ok,ok,State#state{read_mode=list}};
+ _ ->
+ {error,{error,badarg},State}
+ end.
+
+
+
+%% Concatenate two binaries and convert the result to list or binary
+cat(B1, B2, binary) ->
+ list_to_binary([B1,B2]);
+cat(B1, B2, list) ->
+ binary_to_list(B1)++binary_to_list(B2).
+
+%% Cast binary to list or binary
+cast(B, binary) ->
+ B;
+cast(B, list) ->
+ binary_to_list(B).
+
+%% Convert buffer to binary
+cast_binary(Binary) when binary(Binary) ->
+ Binary;
+cast_binary(List) when list(List) ->
+ list_to_binary(List);
+cast_binary(_EOF) ->
+ <<>>.
+
+%% Read size for different read modes
+read_size(binary) ->
+ ?READ_SIZE_BINARY;
+read_size(list) ->
+ ?READ_SIZE_LIST.
+
+max(A, B) when A >= B ->
+ A;
+max(_, B) ->
+ B.
+
+%%%-----------------------------------------------------------------
+%%% ?PRIM_FILE helpers
+
+%% Compensates ?PRIM_FILE:position/2 for the number of bytes
+%% we have buffered
+
+position(Handle, cur, Buf) ->
+ position(Handle, {cur, 0}, Buf);
+position(Handle, {cur, Offs}, Buf) when list(Buf) ->
+ ?PRIM_FILE:position(Handle, {cur, Offs-length(Buf)});
+position(Handle, {cur, Offs}, Buf) when binary(Buf) ->
+ ?PRIM_FILE:position(Handle, {cur, Offs-size(Buf)});
+position(Handle, At, _Buf) ->
+ ?PRIM_FILE:position(Handle, At).
+
projects / ejabberd / commitdiff