%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1997-2010. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%%
-module(mod_disk_log).
%% Application internal API
-export([error_log/2, report_error/2, security_log/2]).
%% Callback API
-export([do/1, load/2, store/2, remove/1]).
-define(VMODULE,"DISK_LOG").
-include("httpd.hrl").
-include("httpd_internal.hrl").
%%%=========================================================================
%%% API
%%%=========================================================================
%% security_log
security_log(#mod{config_db = ConfigDb} = Info, Event) ->
Format = get_log_format(ConfigDb),
Date = httpd_util:custom_date(),
case httpd_log:security_entry(security_disk_log, no_security_log,
Info, Date, Event) of
no_security_log ->
ok;
{Log, Entry} ->
write(Log, Entry, Format)
end.
report_error(ConfigDB, Error) ->
Format = get_log_format(ConfigDB),
Date = httpd_util:custom_date(),
case httpd_log:error_report_entry(error_disk_log, no_error_log, ConfigDB,
Date, Error) of
no_error_log ->
ok;
{Log, Entry} ->
write(Log, Entry, Format)
end.
error_log(Info, Reason) ->
Date = httpd_util:custom_date(),
error_log(Info, Date, Reason).
error_log(#mod{config_db = ConfigDB} = Info, Date, Reason) ->
Format = get_log_format(ConfigDB),
case httpd_log:error_entry(error_disk_log, no_error_log,
Info, Date, Reason) of
no_error_log ->
ok;
{Log, Entry} ->
write(Log, Entry, Format)
end.
%%%=========================================================================
%%% CALLBACK API
%%%=========================================================================
%%--------------------------------------------------------------------------
%% do(ModData) -> {proceed, OldData} | {proceed, NewData} | {break, NewData}
%% | done
%% ModData = #mod{}
%%
%% Description: See httpd(3) ESWAPI CALLBACK FUNCTIONS
%%-------------------------------------------------------------------------
do(Info) ->
AuthUser = auth_user(Info#mod.data),
Date = httpd_util:custom_date(),
log_internal_info(Info,Date,Info#mod.data),
LogFormat = get_log_format(Info#mod.config_db),
case proplists:get_value(status, Info#mod.data) of
%% A status code has been generated!
{StatusCode, _PhraseArgs, Reason} ->
transfer_log(Info, "-", AuthUser, Date, StatusCode, 0,
LogFormat),
if
StatusCode >= 400 ->
error_log(Info, Date, Reason);
true ->
not_an_error
end,
{proceed,Info#mod.data};
%% No status code has been generated!
undefined ->
case proplists:get_value(response, Info#mod.data) of
{already_sent,StatusCode,Size} ->
transfer_log(Info, "-", AuthUser, Date, StatusCode,
Size, LogFormat),
{proceed,Info#mod.data};
{response, Head, _Body} ->
Size = proplists:get_value(content_length, Head, 0),
Code = proplists:get_value(code, Head, 200),
transfer_log(Info, "-", AuthUser, Date, Code,
Size, LogFormat),
{proceed,Info#mod.data};
{_StatusCode, Response} ->
transfer_log(Info, "-", AuthUser, Date, 200,
httpd_util:flatlength(Response), LogFormat),
{proceed,Info#mod.data};
undefined ->
transfer_log(Info, "-", AuthUser, Date, 200,
0, LogFormat),
{proceed,Info#mod.data}
end
end.
%%--------------------------------------------------------------------------
%% load(Line, Context) -> eof | ok | {ok, NewContext} |
%% {ok, NewContext, Directive} |
%% {ok, NewContext, DirectiveList} | {error, Reason}
%% Line = string()
%% Context = NewContext = DirectiveList = [Directive]
%% Directive = {DirectiveKey , DirectiveValue}
%% DirectiveKey = DirectiveValue = term()
%% Reason = term()
%%
%% Description: See httpd(3) ESWAPI CALLBACK FUNCTIONS
%%-------------------------------------------------------------------------
load("TransferDiskLogSize " ++ TransferDiskLogSize, []) ->
case inets_regexp:split(TransferDiskLogSize," ") of
{ok,[MaxBytes,MaxFiles]} ->
case make_integer(MaxBytes) of
{ok,MaxBytesInteger} ->
case make_integer(MaxFiles) of
{ok,MaxFilesInteger} ->
{ok,[],{transfer_disk_log_size,
{MaxBytesInteger,MaxFilesInteger}}};
{error,_} ->
{error,
?NICE(string:strip(TransferDiskLogSize)++
" is an invalid TransferDiskLogSize")}
end;
{error,_} ->
{error,?NICE(string:strip(TransferDiskLogSize)++
" is an invalid TransferDiskLogSize")}
end
end;
load("TransferDiskLog " ++ TransferDiskLog,[]) ->
{ok,[],{transfer_disk_log,string:strip(TransferDiskLog)}};
load("ErrorDiskLogSize " ++ ErrorDiskLogSize, []) ->
case inets_regexp:split(ErrorDiskLogSize," ") of
{ok,[MaxBytes,MaxFiles]} ->
case make_integer(MaxBytes) of
{ok,MaxBytesInteger} ->
case make_integer(MaxFiles) of
{ok,MaxFilesInteger} ->
{ok,[],{error_disk_log_size,
{MaxBytesInteger,MaxFilesInteger}}};
{error,_} ->
{error,?NICE(string:strip(ErrorDiskLogSize)++
" is an invalid ErrorDiskLogSize")}
end;
{error,_} ->
{error,?NICE(string:strip(ErrorDiskLogSize)++
" is an invalid ErrorDiskLogSize")}
end
end;
load("ErrorDiskLog " ++ ErrorDiskLog, []) ->
{ok, [], {error_disk_log, string:strip(ErrorDiskLog)}};
load("SecurityDiskLogSize " ++ SecurityDiskLogSize, []) ->
case inets_regexp:split(SecurityDiskLogSize, " ") of
{ok, [MaxBytes, MaxFiles]} ->
case make_integer(MaxBytes) of
{ok, MaxBytesInteger} ->
case make_integer(MaxFiles) of
{ok, MaxFilesInteger} ->
{ok, [], {security_disk_log_size,
{MaxBytesInteger, MaxFilesInteger}}};
{error,_} ->
{error,
?NICE(string:strip(SecurityDiskLogSize) ++
" is an invalid SecurityDiskLogSize")}
end;
{error, _} ->
{error, ?NICE(string:strip(SecurityDiskLogSize) ++
" is an invalid SecurityDiskLogSize")}
end
end;
load("SecurityDiskLog " ++ SecurityDiskLog, []) ->
{ok, [], {security_disk_log, string:strip(SecurityDiskLog)}};
load("DiskLogFormat " ++ Format, []) ->
case string:strip(Format) of
"internal" ->
{ok, [], {disk_log_format,internal}};
"external" ->
{ok, [], {disk_log_format,external}};
_Default ->
{ok, [], {disk_log_format,external}}
end.
%%--------------------------------------------------------------------------
%% store(Directive, DirectiveList) -> {ok, NewDirective} |
%% {ok, [NewDirective]} |
%% {error, Reason}
%% Directive = {DirectiveKey , DirectiveValue}
%% DirectiveKey = DirectiveValue = term()
%% Reason = term()
%%
%% Description: See httpd(3) ESWAPI CALLBACK FUNCTIONS
%%-------------------------------------------------------------------------
store({transfer_disk_log,TransferDiskLog}, ConfigList)
when is_list(TransferDiskLog) ->
case create_disk_log(TransferDiskLog,
transfer_disk_log_size, ConfigList) of
{ok,TransferDB} ->
{ok,{transfer_disk_log,TransferDB}};
{error,Reason} ->
{error,Reason}
end;
store({transfer_disk_log,TransferLog}, _) ->
{error, {wrong_type, {transfer_disk_log, TransferLog}}};
store({security_disk_log,SecurityDiskLog},ConfigList)
when is_list(SecurityDiskLog) ->
case create_disk_log(SecurityDiskLog,
security_disk_log_size, ConfigList) of
{ok,SecurityDB} ->
{ok,{security_disk_log,SecurityDB}};
{error,Reason} ->
{error,Reason}
end;
store({security_disk_log, SecurityLog}, _) ->
{error, {wrong_type, {security_disk_log, SecurityLog}}};
store({error_disk_log,ErrorDiskLog},ConfigList) when is_list(ErrorDiskLog) ->
case create_disk_log(ErrorDiskLog, error_disk_log_size, ConfigList) of
{ok,ErrorDB} ->
{ok,{error_disk_log,ErrorDB}};
{error,Reason} ->
{error,Reason}
end;
store({error_disk_log,ErrorLog}, _) ->
{error, {wrong_type, {error_disk_log, ErrorLog}}};
store({transfer_disk_log_size, {ByteInt, FileInt}} = Conf, _)
when is_integer(ByteInt), is_integer(FileInt)->
{ok, Conf};
store({transfer_disk_log_size, Value}, _) ->
{error, {wrong_type, {transfer_disk_log_size, Value}}};
store({error_disk_log_size, {ByteInt, FileInt}} = Conf, _)
when is_integer(ByteInt), is_integer(FileInt)->
{ok, Conf};
store({error_disk_log_size, Value}, _) ->
{error, {wrong_type, {error_disk_log_size, Value}}};
store({security_disk_log_size, {ByteInt, FileInt}} = Conf, _)
when is_integer(ByteInt), is_integer(FileInt)->
{ok, Conf};
store({security_disk_log_size, Value}, _) ->
{error, {wrong_type, {security_disk_log_size, Value}}};
store({disk_log_format, Value} = Conf, _) when Value == internal;
Value == external ->
{ok, Conf};
store({disk_log_format, Value}, _) ->
{error, {wrong_type, {disk_log_format, Value}}}.
%%--------------------------------------------------------------------------
%% remove(ConfigDb) -> _
%%
%% Description: See httpd(3) ESWAPI CALLBACK FUNCTIONS
%%-------------------------------------------------------------------------
remove(ConfigDB) ->
lists:foreach(fun([DiskLog]) -> close(DiskLog) end,
ets:match(ConfigDB,{transfer_disk_log,'$1'})),
lists:foreach(fun([DiskLog]) -> close(DiskLog) end,
ets:match(ConfigDB,{error_disk_log,'$1'})),
lists:foreach(fun([DiskLog]) -> close(DiskLog) end,
ets:match(ConfigDB,{security_disk_log,'$1'})),
ok.
%%%========================================================================
%%% Internal functions
%%%========================================================================
%% transfer_log
transfer_log(Info, RFC931, AuthUser, Date, StatusCode, Bytes, Format) ->
case httpd_log:access_entry(transfer_disk_log, no_transfer_log,
Info, RFC931, AuthUser, Date, StatusCode,
Bytes) of
no_transfer_log ->
ok;
{Log, Entry} ->
write(Log, Entry, Format)
end.
get_log_format(ConfigDB)->
httpd_util:lookup(ConfigDB,disk_log_format,external).
%%----------------------------------------------------------------------
%% Open or creates the disklogs
%%----------------------------------------------------------------------
log_size(ConfigList, Tag) ->
proplists:get_value(Tag, ConfigList, {500*1024,8}).
create_disk_log(LogFile, SizeTag, ConfigList) ->
Filename = string:strip(LogFile),
{MaxBytes, MaxFiles} = log_size(ConfigList, SizeTag),
case filename:pathtype(Filename) of
absolute ->
create_disk_log(Filename, MaxBytes, MaxFiles, ConfigList);
volumerelative ->
create_disk_log(Filename, MaxBytes, MaxFiles, ConfigList);
relative ->
case proplists:get_value(server_root,ConfigList) of
undefined ->
{error,
?NICE(Filename++
" is an invalid ErrorLog beacuse ServerRoot "
"is not defined")};
ServerRoot ->
AbsoluteFilename = filename:join(ServerRoot,Filename),
create_disk_log(AbsoluteFilename, MaxBytes, MaxFiles,
ConfigList)
end
end.
create_disk_log(Filename, MaxBytes, MaxFiles, ConfigList) ->
Format = proplists:get_value(disk_log_format, ConfigList, external),
open(Filename, MaxBytes, MaxFiles, Format).
%%----------------------------------------------------------------------
%% Function: open/4
%% Description: Open a disk log file.
%% Control which format the disk log will be in. The external file
%% format is used as default since that format was used by older
%% implementations of inets.
%%
%% When the internal disk log format is used, we will do some extra
%% controls. If the files are valid, try to repair them and if
%% thats not possible, truncate.
%%----------------------------------------------------------------------
open(Filename, MaxBytes, MaxFiles, internal) ->
Opts = [{format, internal}, {repair, truncate}],
open1(Filename, MaxBytes, MaxFiles, Opts);
open(Filename, MaxBytes, MaxFiles, _) ->
Opts = [{format, external}],
open1(Filename, MaxBytes, MaxFiles, Opts).
open1(Filename, MaxBytes, MaxFiles, Opts0) ->
Opts1 = [{name, Filename}, {file, Filename}, {type, wrap}] ++ Opts0,
case open2(Opts1, {MaxBytes, MaxFiles}) of
{ok, LogDB} ->
{ok, LogDB};
{error, Reason} ->
{error,
?NICE("Can't create " ++ Filename ++
lists:flatten(io_lib:format(", ~p",[Reason])))};
_ ->
{error, ?NICE("Can't create "++Filename)}
end.
open2(Opts, Size) ->
case disk_log:open(Opts) of
{error, {badarg, size}} ->
%% File did not exist, add the size option and try again
disk_log:open([{size, Size} | Opts]);
Else ->
Else
end.
%%----------------------------------------------------------------------
%% Actually writes the entry to the disk_log. If the log is an
%% internal disk_log write it with log otherwise with blog.
%%----------------------------------------------------------------------
write(Log, Entry, internal) ->
disk_log:log(Log, list_to_binary(Entry));
write(Log, Entry, _) ->
disk_log:blog(Log, list_to_binary(Entry)).
%% Close the log file
close(Log) ->
disk_log:close(Log).
auth_user(Data) ->
case proplists:get_value(remote_user,Data) of
undefined ->
"-";
RemoteUser ->
RemoteUser
end.
%% log_internal_info
log_internal_info(_, _,[]) ->
ok;
log_internal_info(Info,Date,[{internal_info,Reason}|Rest]) ->
error_log(Info,Date,Reason),
log_internal_info(Info,Date,Rest);
log_internal_info(Info,Date,[_|Rest]) ->
log_internal_info(Info,Date,Rest).
make_integer(List) ->
try list_to_integer(List) of
N ->
{ok, N}
catch
_:_ ->
{error, {badarg, list_to_integer, List}}
end.
