Forums Developers downloading php-generated image with sockets

hello,

how could i download a php-generated image which regenerates each time the php file is refreshed... onto my harddisk by using sockets? i've been stuck with this problem for a while now... some help would be good

i've tried some of the downloaders from mircscripts.org, but they turn up with errors..

thanks in advance

well does the image change its name?
if not you must put a downloader sending the right request to make the server generate the page and image, then, from the page source (to get the pic's name) and go get that image.
I imagine that you need to send a POST request first and i haven't seen no downloader doing this until now.
you can do this by upgrading the downloader you have.

good luck

hi,
um.. theres no name for the image... i made an example here::

www.d-0h.com/ocr.php?string=asdfjk&submit=GO

i have the url of the page which generates the image... but theres no source and the image has no name :s

you should send a content header... because opera doesn't see that as a picture...

firefox doesnt either

wwhhoo never seen something like that...

what you can do is this, read from the socket whatever the server sent you and if is starts by ‰PNG you know it is a pic and put all that source in a file.png

you can see the complete source with mozilla

tontito

IE loaded it fine
maybe the other browsers are dumb to the fact its got data that is a PNG?

It's like requesting any other page, but this time you read the data into a binary variable and save it to a file:

• alias getpic sockopen gp www.[/i]d-0h.com 80
  
  On *:sockopen:gp:{
  var %s = sockwrite -tn gp
  %s GET /ocr.php?string=whateva&submit=GO HTTP/1.0
  %s Host: www.[/i]d-0h.com
  %s Referer: www.[/i]d-0h.com
  %s
  write -c pic.png
  }
  
  On *:sockread:gp:{
  if $sock(gp).mark == data {
  sockread &data
  bwrite pic.png -1 &data
  }
  else {
  var %var
  sockread %var
  echo -s -> %var
  if !%var { sockmark gp data }
  }
  }
  
  On *:sockclose:gp: run pic.png

It already sends a Content-Type header, but a wrong one: text/html instead of image/png. Apparently IE is the only browser that disregards what the server says and guesses the file type by itself.

You call it dumb but I call it safe. Remember the britney.jpg exploit? Only IE executed the malicious HTML code inside the "picture" because of its habit of auto-identifying files.

true!

so true. but non the less M$ took the abilities to far and shoulda stuck with only doign it is its going to put out a picture. not executeable code

Damn browser wars.


Cheers Col

..Or maybe browsers should force the webmasters to follow the HTML standards at the first place. Otherwise, that'd be like telling mIRC to guess that a raw numeric 1234 is RPL_ENDOFNAMES just because it's sent by the server as ":server 1234 nick #channel :End of /NAMES list". :tongue:

I agree, but even with the latest security pathes IE still does that. Try yourself: http://members.lycos.co.uk/onln/files/pic.jpg

good point :tongue: