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makit Image Verification Script (using AspJpeg)
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Email
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| Submitted on: |
5/28/2006 5:48:06 AM |
| By: |
makit
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| Level: |
Intermediate |
| User Rating: |
By 10 Users |
| Compatibility: |
ASP (Active Server Pages), HTML, VbScript (browser/client side)
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| Views: |
17325 |
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(About the author) |
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This code adds image verification to forms, similar to image verification systems that are in use on many web sites across the Internet.
It uses random fonts/sizes/styles/lines etc. to try and stop spam bots from reading the code, fooling the form and bombing you with emails!
I was getting bombed by spam on my guestbook and couldn't find a good verification script in ASP so I made one.
Included is the script page, and an example form/form submit page. As you will be able to see, the image_ver.asp page is just included as a image in the form and then on submittal you just do a check on the submitted code via the included isCode function. Simple!
This script uses the Persits AspJpeg object, which is included on many servers around the world. Please note that you need this component installed on your server for this script to work, you can download a trial from their website.
Please comment and vote so I can keep on improving the code. Thanks.
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'**************************************
' for :makit Image Verification Script (using AspJpeg)
'**************************************
Copyright (C) 2006 Martyn Kilbryde
I just ask that you include a link to my site (http://www.makit.net) if you use this code on your site, some kind of credit will be appreciated. Also, do not pass this code off as your own, that would be silly of you. | |
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By using this code, you agree to the following terms...
- You may use
this code in your own programs (and may compile it into a program and distribute it in compiled format for languages that allow it) freely and with no charge.
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Other 4 submission(s) by this author
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Other User Comments
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 5/24/2006 11:42:15 AM: bipson
Hey, good code, but it would be more interesting if you weren't using a not-free COM ;)
(If this comment was disrespectful, please report it.)
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5/26/2006 6:27:28 AM: makit
I agree, but my webserver has this COM already installed, and because I don't have the permissions to install any free COM's that might be available, it's either use this or try and do it with all scripts... and that sounds like a huge head ache, if not impossible, to do in just ASP.
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5/27/2006 7:28:14 PM: Brian Battles WS1O
One picky thing: In your description you say "like used in most websites today." I'd change that to "like used in many web sites today." Most web sites certainly don't stuff like this.
Picky, I know, but it could confuse people who have never seen such a thing.
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5/27/2006 9:38:54 PM: makit
Indeed, strangely picky, but I'll modify it as I can see where you are coming from.
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5/30/2006 8:59:30 AM: Fred
I thought PSC was about open software
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9/29/2006 2:47:06 AM: jimmasters
Hi,
Am I the only one who cant see the verification image :(, I simple copy all files in IIS then nothing :( When I click the reload link still nothin :( hope you could help!
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9/30/2006 9:11:47 AM: makit
I'm guessing you are just running the HTML file by double clicking it and straight from your browser, you need to run it via the webserver (E.G. http://localhost/imageverification/example_form.htm)
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12/15/2006 9:12:57 PM: bui duc cuong
hi.Thanks very much.
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1/21/2007 2:16:52 AM: jimmasters
Hello,
I cannot see the image and when I right click it an error occur;
at this line
Set jpeg =server.CreateObject("Persits.jpeg")
how do I add this on my localhost? Please send to my email, really appreciate this! Thanks!
(If this comment was disrespectful, please report it.)
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4/7/2007 5:44:28 AM: jimmasters
Is there an ASP.net/vb.net version of this? Hoping there is!
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