| Author |
Message |
< Yaws mailing list ~ Send a 404 on file not found from appmod |
| Guest |
 Posted: Wed Sep 06, 2006 6:50 pm |
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Guest
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Hi,
Is it possible to send a 404 page from an appmod using a built in yaws
facility? I don't want a custom one, just want to tell the client
there is no page. Using {status, 404} doesn't seem to work, unless
the appmod is overriding it somehow. All that is returned is the
empty page.
The appmod is included below, it tries to locate a match for a file if
the extension is omitted and doesn't exist. The 404 path is executed
if the file isn't found.
Regards,
Chris
-module(yappm_rewrite).
-export([out/1]).
-include("$YAWS_INCLUDE/yaws_api.hrl").
-include("yappm_rewrite.hrl").
%% Get extensions from opaque section of yaws.conf.
%%
file_extenions(A) ->
case lists:keysearch (?SEXT_TAG, 1, A#arg.opaque) of
{value, {?SEXT_TAG, StrExts}} ->
string:tokens(StrExts, " ");
_ ->
[]
end.
url_to_file(A, Url) ->
A#arg.docroot ++ Url.
file_type(F) ->
case {filelib:is_dir(F), filelib:is_file(F)} of
{true, _} ->
directory;
{false, true} ->
file;
{_, _} ->
none
end.
test_file(F, [X|Xs]) ->
error_logger:info_msg("testing file:~p", [F ++ X]),
case file_type(F ++ X) of
file ->
{value, X};
directory ->
undefined;
none ->
test_file(F, Xs)
end;
test_file(_F, []) ->
undefined.
is_known(A, F) ->
Exts = file_extenions(A),
case test_file(F, Exts) of
{value, X} ->
{ok, X};
_ ->
undefined
end.
find_url(A) ->
F = url_to_file(A, A#arg.appmoddata),
error_logger:info_msg("finding ~p", [F]),
case file_type(F) of
file ->
{url, A#arg.appmoddata};
directory ->
undefined;
none ->
case is_known(A, F) of
{ok, Ext} ->
{url, A#arg.appmoddata ++ Ext};
_X ->
undefined
end
end.
out(A) ->
case find_url(A) of
{url, Url} ->
{page, Url};
_ ->
error_logger:info_msg("sending 404"),
{status, 404}
end.
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| Guest |
| Posted: Wed Sep 06, 2006 7:42 pm |
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Guest
|
> Hi,
>
> Is it possible to send a 404 page from an appmod using a built in yaws
> facility? I don't want a custom one, just want to tell the client
> there is no page. Using {status, 404} doesn't seem to work, unless
> the appmod is overriding it somehow. All that is returned is the
> empty page.
You should check the retuned header. Use curl, the www developers
tool number one.
Yaws returns a perfect 404, as in:
[klacke@guld]~ > curl -I http://localhost:8000/a/jaja
HTTP/1.1 404 Not Found
Server: Yaws/1.64 Yet Another Web Server
Date: Wed, 06 Sep 2006 19:31:28 GMT
Content-Type: text/html
No content at all though, If you want some text a'la "page not found"
you have to send that text to the browser as in:
out(A) ->
[{html, "Foobar is not valid html"},
{status, 404}].
/klacke
-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
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http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
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| Guest |
| Posted: Wed Sep 06, 2006 8:48 pm |
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Guest
|
On 06/09/06, klacke@tail-f.com <klacke@tail-f.com> wrote:
> You should check the retuned header. Use curl, the www developers
> tool number one.
Thanks for the tip.
I take then, if you use appmods you have to generate your own response
pages when there's a problem. i.e. you can't tell yaws here's a 400+
HTTP code, send whatever you'd usually send for that. I don't really
care about this anyway, I was just curious.
Chris
-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
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http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
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| Guest |
| Posted: Wed Sep 06, 2006 9:03 pm |
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Guest
|
> On 06/09/06, klacke@tail-f.com <klacke@tail-f.com> wrote:
>
>> You should check the retuned header. Use curl, the www developers
>> tool number one.
>
> Thanks for the tip.
>
> I take then, if you use appmods you have to generate your own response
> pages when there's a problem. i.e. you can't tell yaws here's a 400+
> HTTP code, send whatever you'd usually send for that. I don't really
> care about this anyway, I was just curious.
>
Well, you do have to generate all output that should be returned
to the client.
However, Yaws has configurable bahaviour for delivering 404
messages (see yaws.conf(5)) (errormod_404) and the default
is a module called - yaws_404.erl
Thus, you could just do:
out(A) ->
yaws_404:out404(A).
To get precicely the same behaviour as the default.
/klacke
-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
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