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%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2008-2012. 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(httpd_log).
-include("httpd.hrl").
-export([access_entry/8, error_entry/5, error_report_entry/5,
security_entry/5]).
%%%=========================================================================
%%% Internal Application API
%%%=========================================================================
-spec access_entry(Log :: term(), % Id of the log
NoLog :: term(), % What to return when no log is found
Info :: #mod{},
RFC931 :: string(),
AuthUser :: string(),
Date :: string(),
StatusCode :: pos_integer(),
Size :: 0 | pos_integer() | string()) ->
{Log :: atom() | pid(), Entry :: string()} | term() .
%% Somethime the size in the form of the content_length is put here, which
%% is actually in the form of a string
%% So it can either be the size as an integer, the size as a string
%% or, worst case scenario, bytes.
access_entry(Log, NoLog, Info, RFC931, AuthUser, Date, StatusCode,
SizeStrOrBytes)
when is_list(SizeStrOrBytes) ->
Size =
case (catch list_to_integer(SizeStrOrBytes)) of
I when is_integer(I) ->
%% This is from using the content_length (which is a string)
I;
_ ->
%% This is better than nothing
httpd_util:flatlength(SizeStrOrBytes)
end,
access_entry(Log, NoLog, Info, RFC931, AuthUser, Date, StatusCode, Size);
access_entry(Log, NoLog,
#mod{config_db = ConfigDB,
init_data = #init_data{peername = {_, RemoteHost}},
request_line = RequestLine,
parsed_header = Headers},
RFC931, AuthUser, Date, StatusCode, Size) ->
MakeEntry =
fun() ->
do_access_entry(ConfigDB, Headers, RequestLine,
RemoteHost, RFC931, AuthUser,
Date, StatusCode, Size)
end,
log_entry(Log, NoLog, ConfigDB, MakeEntry).
-spec error_entry(Log :: term(), % Id of the log
NoLog :: term(), % What to return when no log is found
Info :: #mod{},
Date :: string(),
Reason :: term()) ->
{Log :: atom() | pid(), Entry :: string()} | term().
error_entry(Log, NoLog,
#mod{config_db = ConfigDB,
init_data = #init_data{peername = {_, RemoteHost}},
request_uri = URI}, Date, Reason) ->
MakeEntry =
fun() ->
do_error_entry(ConfigDB, RemoteHost, URI, Date, Reason)
end,
log_entry(Log, NoLog, ConfigDB, MakeEntry).
-spec error_report_entry(Log :: term(),
NoLog :: term(),
ConfigDB :: term(),
Date :: string(),
ErrroStr :: string()) ->
{Log :: atom() | pid(), Entry :: string()} | term().
error_report_entry(Log, NoLog, ConfigDb, Date, ErrorStr) ->
MakeEntry = fun() -> io_lib:format("[~s], ~s~n", [Date, ErrorStr]) end,
log_entry(Log, NoLog, ConfigDb, MakeEntry).
-spec security_entry(Log :: term(),
NoLog :: term(),
ConfigDB :: term(),
Date :: string(),
Reason :: term()) ->
{Log :: atom() | pid(), Entry :: string()} | term().
security_entry(Log, NoLog, #mod{config_db = ConfigDB}, Date, Reason) ->
MakeEntry = fun() -> io_lib:format("[~s] ~s~n", [Date, Reason]) end,
log_entry(Log, NoLog, ConfigDB, MakeEntry).
log_entry(Log, NoLog, ConfigDb, MakeEntry) when is_function(MakeEntry) ->
case httpd_util:lookup(ConfigDb, Log) of
undefined ->
NoLog;
LogRef ->
{LogRef, MakeEntry()}
end.
%%%========================================================================
%%% Internal functions
%%%========================================================================
do_access_entry(ConfigDB, Headers, RequestLine,
RemoteHost, RFC931, AuthUser, Date, StatusCode,
Size) ->
case httpd_util:lookup(ConfigDB, log_format, common) of
common ->
lists:flatten(io_lib:format("~s ~s ~s [~s] \"~s\" ~w ~w~n",
[RemoteHost, RFC931, AuthUser, Date,
RequestLine,
StatusCode, Size]));
combined ->
Referer =
proplists:get_value("referer", Headers, "-"),
UserAgent =
proplists:get_value("user-agent",
Headers, "-"),
io_lib:format("~s ~s ~s [~s] \"~s\" ~w ~w ~s ~s~n",
[RemoteHost, RFC931, AuthUser, Date,
RequestLine, StatusCode, Size,
Referer, UserAgent])
end.
do_error_entry(ConfigDB, RemoteHost, undefined, Date, Reason) ->
case httpd_util:lookup(ConfigDB, error_log_format, pretty) of
pretty ->
io_lib:format("[~s] server crash for ~s, reason: ~n~p~n~n",
[Date, RemoteHost, Reason]);
compact ->
io_lib:format("[~s] server crash for ~s, reason: ~w~n",
[Date, RemoteHost, Reason])
end;
do_error_entry(ConfigDB, RemoteHost, URI, Date, Reason) ->
case httpd_util:lookup(ConfigDB, error_log_format, pretty) of
pretty ->
io_lib:format("[~s] access to ~s failed for ~s, reason: ~n~p~n",
[Date, URI, RemoteHost, Reason]);
compact ->
io_lib:format( "[~s] access to ~s failed for ~s, reason: ~w~n",
[Date, URI, RemoteHost, Reason])
end.
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