---------- Forwarded message ---------- From: Germán Arduino <garduino@gmail.com> Date: 2010/6/2 Subject: Re: [squeak-dev] Re: Using WebClient To: The general-purpose Squeak developers list <squeak-dev@lists.squeakfoundation.org> Hi Andreas: Thanks by the comments. I will continue with the multipart stuff, because this may become a payed work for a local customer. Indeed I could do the job with other tools but in most of cases that means install a gazillion of different pieces of software of third parts that are complex to make work. I prefer to develop my own solution, even with a bit more of work, but completeley Smalltalk. Then I can deploy on the customer a self containded service that I can extend as the customer need. I'm now reading about multipart/form-data enctype and will try to develop this feature for WebClient (if the customer don't cancel the project). Will send the news. Cheers. Germán. 2010/6/2 Andreas Raab <andreas.raab@gmx.de>:
Hi Germán -
Sorry I missed this discussion earlier. First of all, looking at the page should give you all the information you need to derive the basic parameters for the html form submission (see [1]). The "action" attribute of the form tag will tell you the URL for the request; the "method" attribute will tell you what HTTP method to use (GET/POST; default is GET) and the "enctype" attribute what encoding to use (default is application/x-www-form-urlencoded).
Armed with this information you can set up your HTTP request properly. I've started to add utility methods for this in WebClient (fetch the latest version straight from http://squeaksource.com/WebClient). With this version you can now do some simple form submissions like Googling for Squeak in English:
    WebClient         htmlSubmit: 'http://www.google.com/search'         fields: {             'hl' -> 'en'.             'q' -> 'Squeak'         }
Unfortunately, it currently doesn't support multipart/form-data since I have no experience with these encodings. If you figure it out, drop me a note (or better: some code :-) for how to do it, and I'll add it.
[1] http://www.google.com/search?q=html+form+tag
Cheers, Â - Andreas
On 6/1/2010 6:48 PM, Germán Arduino wrote:
Thanks by the response Bill.
I investigated a bit more and found Tamper, a firefox extension to view and modify HTTP/HTTPS headers and post parameters.
Then I discovered that this form that I need to deal with, use multipart/form-data and I must deal also with boundaries (http://www.w3.org/Protocols/rfc1341/7_2_Multipart.html). I'm reading a bit more to fully understand this stuff and may be the WebClient is usable as is or I can modify it to this sort of use. I will comment when have more news.
Thanks again by the help.
Germán.
2010/6/1 Schwab,Wilhelm K<bschwab-ZyIy6kptTSJkZI0wD67Jjg@public.gmane.org>:
You can do a simple "man in the middle attack" on yourself. Â One approach would be to set up your own web server, serve the page with the form to a "real" browser and see what it sends when you submit the form. Â There is probably also a way to do it with a proxy of some sort, either off the shelf or one you write to log traffic both ways, and then you quickly get a picture of how the conversation works. Â A network sniffer might be another option.
I have had to do things like this with either network or serial port traffic at various times. Â A few years back, an engineer with a medical device manufacturer was late delivering something that we happened to need at a time that was inconvenient for him. Â The solution: blame the confusion on the customer (me), of course, and hope that he could later give us something that might make things "easier" on us (which would be a working version of their new software). Â It got pretty ridiculous shortly before he had to admit that it didn't work. Â The funny thing was that their demo program for the "new protocol" was using something that looked exactly like the old one :) Â I was able to show that because I wrote a replacement for their device and connected their program to it: it was obviously not doing what he was claiming.
Bill
________________________________________ From: pharo-project-bounces-bM+ny+RY8h+a+bCvCPl5/gCzwTLBPCX0@public.gmane.org [pharo-project-bounces@lists.gforge.inria.fr] On Behalf Of Germán Arduino [garduino-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org] Sent: Monday, May 31, 2010 1:39 PM To: Pharo-project-bM+ny+RY8h+a+bCvCPl5/gCzwTLBPCX0@public.gmane.org Cc: The general-purpose Squeak developers list Subject: Re: [Pharo-project] Using WebClient
Talking of post method, I tried to capture it with Firebug to understand what data post with WebClient, but no way until now.
Exist some trick to obtain the exact content of the data to post only debuggin the web page?
Cheers.
2010/5/29 Germán Arduino<garduino-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
I think that is a post method in this case, but can't make it work (yet).
2010/5/29 Schwab,Wilhelm K<bschwab-ZyIy6kptTSJkZI0wD67Jjg@public.gmane.org>:
It's been a long time, but won't the button cause the browser to send a post or get (whichever action is specified in the form) to the server? Â It might be enough to decide the content of that and send it over the socket. Â I am probably thinking in CGI terms, which might not be what you need.
________________________________________ From: pharo-project-bounces-bM+ny+RY8h+a+bCvCPl5/gCzwTLBPCX0@public.gmane.org [pharo-project-bounces@lists.gforge.inria.fr] On Behalf Of Stéphane Ducasse [stephane.ducasse@inria.fr] Sent: Saturday, May 29, 2010 4:14 PM To: Pharo-project-bM+ny+RY8h+a+bCvCPl5/gCzwTLBPCX0@public.gmane.org Subject: Re: [Pharo-project] Using WebClient
if you get answers from squeak-dev let us know.
Stef
On May 29, 2010, at 10:02 PM, Germán Arduino wrote:
Hi:
I'm trying to automate some operations on a web page that requires authentication.
I managed to arrive to the form that I need to process, authenticated without problems.
But I can't figure out how to process the button (is a button of this type:
<input class="lButton" style="" name="submit_search" value="Create File" type="submit"> Â ) Â to execute the Create File action.
The form have two dates (that I can calculate and fill in) but I can't to imagine how to process the submit button programmatically.
Any hint will be appreciated.
Cheers.
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