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From Sorin Manolache <sor...@gmail.com>
Subject Re: Using aprec in a handler to retrieve request body
Date Tue, 16 Feb 2010 14:59:06 GMT
2010/2/16 Frédéric Laurendeau <frederic.laurendeau@gmail.com>:
> The problem is solved with the fix /usr/local/apache2/bin/apxs -c -L
> /usr/local/lib -l apreq2 mod_maquette.c
> The symbol apreq_params_as_string is now resolved.
>
> But there is another unresolved symbol now : apreq_handle_apache2. I figured
> out that this function is declared in the file apreq_module_apache2.h but
> including it doesn't resolve the linking problem.
>
> It seems weird, I thought that this symbol would be in the same lib
> than apreq_params_as_string...

It seems that the symbol is in an apache module, namely in mod_apreq2.so.

Enable the module (LoadModule apreq2_module /path/to/mod_apreq2.so)
and try again.

S


>
> 2010/2/16 Sorin Manolache <sorinm@gmail.com>
>
>> 2010/2/16 Frédéric Laurendeau <frederic.laurendeau@gmail.com>:
>> > Thanks for your help !
>> > I tried it but it doesn't work, I get the following errors.
>> >
>> > /usr/local/apache2//build/libtool --silent --mode=compile gcc -prefer-pic
>> >  -DAP_HAVE_DESIGNATED_INITIALIZER -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -g
>> > -O2 -pthread
>> >  -I/usr/local/apache2//include  -I/usr/local/apache2//include
>> > -I/usr/local/apache2//include   -c -o mod_maquette.lo mod_maquette.c &&
>> > touch mod_maquette.slo
>> >
>> > mod_maquette.c: In function `maquette_handler':
>> > mod_maquette.c:21: warning: initialization makes pointer from integer
>> > without a cast
>> >
>> > /usr/local/apache2//build/libtool --silent --mode=link gcc -o
>> > mod_maquette.la  -lapreq2 -rpath /usr/local/apache2//modules -module
>> > -avoid-version    mod_maquette.lo
>> > /usr/bin/ld: cannot find -lapreq2
>>
>> Search libapreq2.so on your disk. Assuming it is located in
>> /usr/local/lib/libapreq2.so you write
>>
>> /usr/local/apache2/bin/apxs -c -L /usr/local/lib -l apreq2 mod_maquette.c
>>
>> Check also that the lib is called libapreq2.so on your system. Maybe
>> it is libapreq.so (without the '2'). Adapt your command line
>> accordingly.
>>
>> S
>>
>> > collect2: ld returned 1 exit status
>> > apxs:Error: Command failed with rc=65536
>> > .
>> > /usr/local/apache2//build/instdso.sh
>> > SH_LIBTOOL='/usr/local/apache2//build/libtool'
>> > mod_maquette.la/usr/local/apache2//modules
>> > /usr/local/apache2//build/libtool --mode=install cp
>> > mod_maquette.la/usr/local/apache2//modules/
>> > cp .libs/mod_maquette.so /usr/local/apache2//modules/mod_maquette.so
>> > cp: cannot stat `.libs/mod_maquette.so': No such file or directory
>> > apxs:Error: Command failed with rc=65536
>> >
>> > 2010/2/16 Sorin Manolache <sorinm@gmail.com>
>> >
>> >> 2010/2/16 Frédéric Laurendeau <frederic.laurendeau@gmail.com>:
>> >> > Hi,
>> >> >
>> >> > I am trying to write a module which will get the request body, process
>> it
>> >> > and write generated content in the response.
>> >> > I have seen that some of you used aprec to get the request body but
I
>> >> just
>> >> > cannot manage to build my module with it. I'm using apxs to build my
>> >> module
>> >> > and after the build, there is an error when trying to start apache2
>> with
>> >> my
>> >> > module: "Cannot load mod_maquette.so into server: undefined symbol:
>> >> > apreq_params_as_string"
>> >> >
>> >> > I put at the bottom of the mail my source code and my build script,
>> maybe
>> >> I
>> >> > forgot to include some headers in the source or some libraries in the
>> >> build
>> >> > command line ?
>> >> >
>> >> > I don't really understand how all of this works but aprec seems very
>> >> > powerfull and I'd like to find some tutorials or examples on how to
>> build
>> >> > modules with it.
>> >> >
>> >> > Thanks for your help.
>> >> >
>> >> > Frederic
>> >> >
>> >> > Build script :
>> >> > /usr/local/apache2/bin/apxs -c mod_maquette.c
>> >>
>> >> Try
>> >>
>> >> /usr/local/apache2/bin/apxs -c -l apreq2 mod_maquette.c
>> >>
>> >> > /usr/local/apache2/bin/apxs -i -a -n maquette mod_maquette.la
>> >> >
>> >> >
>> >> > Source code mod_maquette.c:
>> >> > #include <stdlib.h>
>> >> > #include <math.h>
>> >> > #include <string.h>
>> >> > #include "httpd.h"
>> >> > #include "http_connection.h"
>> >> > #include "http_config.h"
>> >> > #include "http_core.h"
>> >> > #include "http_log.h"
>> >> > #include "http_protocol.h"
>> >> > #include "ap_config.h"
>> >> > #include "http_request.h"
>> >> > #include "apr.h"
>> >> > #include "apr_strings.h"
>> >> > #include "apr_lib.h"
>> >> > #include "apreq2/apreq_module.h"
>> >> > #include "apreq2/apreq_param.h"
>> >> >
>> >> > static int maquette_handler(request_rec *r)
>> >> > {
>> >> > const apr_table_t* args;
>> >> > apreq_handle_t* h = apreq_handle_apache2(r);
>> >> > apreq_body(h, &args);
>> >> > const char *params = apreq_params_as_string(r->pool, args, NULL,
>> >> > APREQ_JOIN_QUOTE);
>> >> >
>> >> > fprintf(stderr, "=====TEST=====\n%s\n======TEST=====\n", params );
>> >> > ap_rprintf(r, "Request data read : %s\n", params);
>> >> > fflush(stderr);
>> >> >  return DONE;
>> >> > }
>> >> >
>> >> > static void register_hooks(apr_pool_t *p)
>> >> > {
>> >> > ap_hook_handler(maquette_handler, NULL, NULL, APR_HOOK_MIDDLE);
>> >> > }
>> >> >
>> >> > module AP_MODULE_DECLARE_DATA maquette_module =
>> >> > {
>> >> >    STANDARD20_MODULE_STUFF,
>> >> >    NULL,             /* dir config creater */
>> >> >    NULL,             /* dir merger --- default is to override
*/
>> >> >    NULL,             /* server config */
>> >> >    NULL,             /* merge server configs */
>> >> >    NULL,             /* command apr_table_t */
>> >> >    register_hooks,   /* register hooks */
>> >> > };
>> >> >
>> >>
>> >>
>> >>
>> >> --
>> >> A: Because it reverses the logical flow of conversation.
>> >> Q: Why is top-posting frowned upon?
>> >> A: Top-posting.
>> >> Q: What is the most annoying thing in e-mail?
>> >>
>> >
>>
>>
>>
>> --
>> A: Because it reverses the logical flow of conversation.
>> Q: Why is top-posting frowned upon?
>> A: Top-posting.
>> Q: What is the most annoying thing in e-mail?
>>
>



-- 
A: Because it reverses the logical flow of conversation.
Q: Why is top-posting frowned upon?
A: Top-posting.
Q: What is the most annoying thing in e-mail?

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