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Viewing changes to lib/inets/src/mod_head.erl

  • Committer: Bazaar Package Importer
  • Author(s): Erlang Packagers, Sergei Golovan
  • Date: 2006-12-03 17:07:44 UTC
  • mfrom: (2.1.11 feisty)
  • Revision ID: james.westby@ubuntu.com-20061203170744-rghjwupacqlzs6kv
Tags: 1:11.b.2-4
[ Sergei Golovan ]
Fixed erlang-base and erlang-base-hipe prerm scripts.

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lib/inets/src/mod_head.erl
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%% ``The contents of this file are subject to the Erlang Public License,
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%% Version 1.1, (the "License"); you may not use this file except in
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%% compliance with the License. You should have received a copy of the
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%% Erlang Public License along with this software. If not, it can be
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%% retrieved via the world wide web at http://www.erlang.org/.
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%% 
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%% Software distributed under the License is distributed on an "AS IS"
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%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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%% the License for the specific language governing rights and limitations
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%% under the License.
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%% 
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%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
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%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
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%% AB. All Rights Reserved.''
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%% 
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%%     $Id$
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%%
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-module(mod_head).
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-export([do/1]).
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-include("httpd.hrl").
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%% do
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do(Info) ->
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    ?DEBUG("do -> entry",[]),
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    case Info#mod.method of
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        "HEAD" ->
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            case httpd_util:key1search(Info#mod.data,status) of
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                %% A status code has been generated!
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                {StatusCode,PhraseArgs,Reason} ->
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                    {proceed,Info#mod.data};
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                %% No status code has been generated!
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                _undefined ->
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                    case httpd_util:key1search(Info#mod.data,response) of
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                        %% No response has been generated!
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                        undefined ->
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                            do_head(Info);
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                        %% A response has been sent! Nothing to do about it!
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                        {already_sent,StatusCode,Size} ->
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                            {proceed,Info#mod.data};
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                        %% A response has been generated!
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                        {StatusCode,Response} ->
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                            {proceed,Info#mod.data}
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                    end
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            end;
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        %% Not a HEAD method!
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        _ ->
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            {proceed,Info#mod.data}
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    end.
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do_head(Info) -> 
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    ?DEBUG("do_head -> Request URI: ~p",[Info#mod.request_uri]),
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    Path = mod_alias:path(Info#mod.data,Info#mod.config_db,
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                          Info#mod.request_uri),
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    Suffix = httpd_util:suffix(Path),
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    %% Does the file exists?
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    case file:read_file_info(Path) of
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        {ok,FileInfo} ->
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            MimeType=httpd_util:lookup_mime_default(Info#mod.config_db,Suffix,"text/plain"),
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            Length=io_lib:write(FileInfo#file_info.size),
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            Head=[{content_type,MimeType},{content_length,Length},{code,200}],
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            {proceed,[{response,{response,Head,nobody}}|Info#mod.data]};
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        {error,Reason} ->
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            {proceed,
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             [{status,read_file_info_error(Reason,Info,Path)}|Info#mod.data]}
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    end.
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%% read_file_info_error - Handle file info read failure
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%%
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read_file_info_error(eacces,Info,Path) ->
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    read_file_info_error(403,Info,Path,"");
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read_file_info_error(enoent,Info,Path) ->
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    read_file_info_error(404,Info,Path,"");
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read_file_info_error(enotdir,Info,Path) ->
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    read_file_info_error(404,Info,Path,
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                         ": A component of the file name is not a directory");
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read_file_info_error(emfile,_Info,Path) ->
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    read_file_info_error(500,none,Path,": To many open files");
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read_file_info_error({enfile,_},_Info,Path) ->
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    read_file_info_error(500,none,Path,": File table overflow");
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read_file_info_error(_Reason,_Info,Path) ->
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    read_file_info_error(500,none,Path,"").
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read_file_info_error(StatusCode,none,Path,Reason) ->
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    {StatusCode,none,?NICE("Can't access "++Path++Reason)};
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read_file_info_error(StatusCode,Info,Path,Reason) ->
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    {StatusCode,Info#mod.request_uri,
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     ?NICE("Can't access "++Path++Reason)}.