Re: Accessing post data

The problem is that cgi.rb, which I'm assuming you're requiring in =20
whatever CGI handler is processing the incoming XML, preprocesses the =20=

incoming CGI data via the CGI::parse <- CGI::initialize_query <- =20
CGI:initialize call stack.

In order to get around that for my own XML data handling, I built a =20
RawCGI class which is a shameless hacked copy of CGI (/usr/lib/ruby/=20
1.8/cgi.rb) which does not call CGI::parse or CGI::initialize_query.  =20=

The CGI class is really for typical CGI use cases, which are key=3Dvalue =
=20
requests as seen in URLs.

While I won't post my rawcgi.rb file, I can point out the relevant =20
parts of cgi.rb and rawcgi.rb for comparison:



/usr/lib/ruby/1.8/cgi.rb:

   def initialize(type =3D "query")
     if defined?(MOD_RUBY) && !ENV.key?("GATEWAY_INTERFACE")
       Apache.request.setup_cgi_env
     end

     extend QueryExtension
     @multipart =3D false
     if defined?(CGI_PARAMS)
       warn "do not use CGI_PARAMS and CGI_COOKIES"
       @params =3D CGI_PARAMS.dup
       @cookies =3D CGI_COOKIES.dup
     else
       initialize_query()  # set @params, @cookies
     end

     (and more stuff ...)



rawcgi.rb:

   def initialize
     if defined?(MOD_RUBY) && !ENV.key?("GATEWAY_INTERFACE")
       Apache.request.setup_cgi_env
     end

     raise "Bad Request Method" if ENV['REQUEST_METHOD'] !=3D 'POST'

     $stdin.binmode if defined? $stdin.binmode
     @request =3D $stdin.read(Integer(ENV['CONTENT_LENGTH'])) or ''
   end

   attr_reader :request



Note the following:
-  RawCGI contains a request attribute that is accessible from your =20
Ruby-based CGI handler.  That is where your XML data would be.
-  RawCGI and CGI probably cannot both be used in the same Ruby script =20=

b/ they both read data via $stdin:
   - For my own designs, I use a separate service handler script for =20
Ajax type requests which uses RawCGI.
   - Since ENV is accessible outside of the CGI object, you could =20
probably check for ENV['REQUEST_METHOD'] and require 'rawcgi' on =20
'POST' and require 'cgi' on 'GET'.  I haven't tested this.

Ken



On Jun 3, 2009, at 5:40 PM, Fred Appelman wrote:

> Thank you for the quick reply. Unfortunately this will not work for =20=

> me (I think).
> The payload is an XML message and that is not parameterized. I need =20=

> to read the
> full XML message that is in the 250 bytes.
>
> 	Fred
>
> On 3 jun 2009, at 22:17, Sardem FF7 wrote:
>
>> Le 03/06/2009 22:09, Fred Appelman a =E9crit :
>>
>>> 2. Once I have the data I am able to see that the post data has a =20=

>>> size
>>> of 250 bytes. Also the request_method confirms there is POST data.
>>>  I cannot find any method to actually access these bytes. The method
>>> read returns nil and the functions gets, readline and readlines
>>>  all claim they are private to Apache::Request.
>>>  Since there is no documentation I am out of ideas. Does anyone know
>>> how to access the POST data?
>>
>> Hello,
>>
>> I found that the folowing code makes GET and POST data in ARGS :
>> ARGS =3D Apache.request.paramtable
>> You can access the classic $_GET['type'] (in PHP) by ARGS['type']
>> (mod_ruby).
>> So, I think, the two types of datas are the same for mod_ruby.
>>
>> --=20
>>
>> Sardem FF7
>>
>
>