Wayne, You can do on-the-fly image creation/manipulation with objects, such as COM and JavaBean. I'm on Windows, and I use two COM based image manipulators to do similar work - although I've never developed a CAPTCHA routine.
Since you're on OSX, it's probably the case that you'll need to create a file on the OS and then serve it. The trick to keeping the folder clean is simple: At the start of your script, clean up any old files: use the directory listing action to list the folder into an array, loop through it and use the file delete action to delete any files with a timestamp < yesterday. If you do this simple step each time you need a new CAPTCHA image, the whole process will maintain itself. Although it's down my to-do list, I do intend to bring imagemagick out as a set of actions and/or tags in TeraScript. I think it's a nice tool to have in a scripting language. Robert -----Original Message----- From: Wayne Irvine [mailto:[email protected]] Sent: Monday, February 13, 2012 10:46 AM To: [email protected] Subject: Re: TeraScript-Talk: Imagemagick for CAPTCHA On 13/02/2012, at 6:15 PM, William Conlon wrote: > Google gives: http://www.fmwconcepts.com/imagemagick/captcha/index.php Thanks but I had already seen that. Infact that's what gave me the idea. But if I go that route I am creating an image as a file and then showing the image through it's file path, then I would have to delete the file or be left with a load of files. Possible, but clumsy. The way the PHP solutions I have seen work is that an img tag calls a PHP file which creates and returns the image on the fly: <img src='createanimageonthefly.php'> Two problems with that are that I can't get PHP working correctly on my servers and I'm not sure how to pass the string from Witango to PHP securely so I can compare the results. So I am looking to create a Witango_cmd action that calls Imagemagick and stores the resultant image in a VAR or similar that can be accessed in the code that follows. I realise I'm probably not using the correct nomenclature but if I was, I would probably have a better idea how to do it and wouldn't have to ask this question. Wayne Irvine > On Feb 12, 2012, at 4:06 PM, Wayne Irvine wrote: > >> I have been fighting with various methods to implement CAPTCHA in some of my >> sites. Most involve external servers or PHP. >> >> I'm a Witango/Terascript guy and would like to keep it all inhouse. >> >> I use Terascript with Imagemagick to manipulate images. I could define a >> short string and send it to Imagemagick to munge it a bit but so far all my >> Imagemagick work has bee on files. What I'd really like is to return an >> element that could be referenced as an image and displayed to the user >> without creating temp directories and image files and having to clean up >> after. >> >> Does anyone have any clues (or better yet, step by step tutorials for the >> dummies ie me). >> >> Wayne Irvine >> >> ---------------------------------------- >> >> To unsubscribe from this list, please send an email to >> [email protected] with "unsubscribe terascript-talk" in the body. >> > > > > > ---------------------------------------- > > To unsubscribe from this list, please send an email to > [email protected] with "unsubscribe terascript-talk" in the body. > ---------------------------------------- To unsubscribe from this list, please send an email to [email protected] with "unsubscribe terascript-talk" in the body. ---------------------------------------- To unsubscribe from this list, please send an email to [email protected] with "unsubscribe terascript-talk" in the body.
