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Diffstat (limited to 'src/couch_inets/mod_head.erl')
-rw-r--r-- | src/couch_inets/mod_head.erl | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/couch_inets/mod_head.erl b/src/couch_inets/mod_head.erl new file mode 100644 index 00000000..3b78ff42 --- /dev/null +++ b/src/couch_inets/mod_head.erl @@ -0,0 +1,73 @@ +%% ``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.'' +%% +%% $Id$ +%% +-module(mod_head). +-export([do/1]). + +-include("httpd.hrl"). + +-define(VMODULE,"HEAD"). + +%% do + +do(Info) -> + case Info#mod.method of + "HEAD" -> + case httpd_util:key1search(Info#mod.data,status) of + %% A status code has been generated! + {_StatusCode, _PhraseArgs, _Reason} -> + {proceed,Info#mod.data}; + %% No status code has been generated! + _undefined -> + case httpd_util:key1search(Info#mod.data,response) of + %% No response has been generated! + undefined -> + do_head(Info); + %% A response has been sent! Nothing to do about it! + {already_sent, _StatusCode, _Size} -> + {proceed,Info#mod.data}; + %% A response has been generated! + {_StatusCode, _Response} -> + {proceed,Info#mod.data} + end + end; + %% Not a HEAD method! + _ -> + {proceed,Info#mod.data} + end. + +do_head(Info) -> + Path = mod_alias:path(Info#mod.data, + Info#mod.config_db, + Info#mod.request_uri), + Suffix = httpd_util:suffix(Path), + %% Does the file exists? + case file:read_file_info(Path) of + {ok, FileInfo} -> + MimeType = + httpd_util:lookup_mime_default(Info#mod.config_db, + Suffix,"text/plain"), + Length = io_lib:write(FileInfo#file_info.size), + Head = + [{content_type, MimeType}, + {content_length, Length}, {code,200}], + {proceed,[{response, {response, Head, nobody}} | Info#mod.data]}; + {error, Reason} -> + Status = httpd_file:handle_error(Reason, "access", Info, Path), + {proceed, + [{status, Status} | Info#mod.data]} + end. |