Re: WebDNA CAPTCHA
This WebDNA talk-list message is from 2008
It keeps the original formatting.
numero = 69767
interpreted = N
texte = Nice !!RegardsStuart TremainIDFK Web DevelopmentsAUSTRALIAwebdna@idfk.com.auOn 07/02/2008, at 1:33 AM, Phil Ronchetti wrote:> I put together a captcha that uses WebDNA and Imagemagick.>> (1) Use WebDNA to generate a random string like so:>> [text> ]Pattern> =1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ[/text]>> [text]RandomString=[/text]>> [loop start=1&end=5&advance=1]> [text]nextchar=[math]ceil([RANDOM format=float]*62)[/math]=[/text]> [text]RandomString=[RandomString][GetChars > start=[nextchar]&end=[nextchar]][Pattern][/GetChars][/text]> [/loop]>> (2) Write the solution [RandomString] to a file.>> (3) use Imagemagick to put our [RandomString] onto a background > image (background.gif) that we have already set up for this purpose > like so:>> [shell]/usr/local/bin/convert -size 180x65 xc:white -tile captcha/ > background.gif -draw "color 0,0 reset" -draw "font '/Library/Fonts/ > Verdana' font-size 42 fill white stroke black stroke-width 2 > translate 10,45 text 0,0 '[RandomString]'" 'captcha/text.png'[/shell]>> (4) Insert your image "captcha/text.png" into your form.>> (5) When the user submits their form compare their answer to the > solution you saved in the text file in step 2.>> (6) Drink champagne :-)>> Phil Ronchetti>>> -------------------------------------------------------------> This message is sent to you because you are subscribed to> the mailing list
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Nice !!RegardsStuart TremainIDFK Web DevelopmentsAUSTRALIAwebdna@idfk.com.auOn 07/02/2008, at 1:33 AM, Phil Ronchetti wrote:> I put together a captcha that uses WebDNA and Imagemagick.>> (1) Use WebDNA to generate a random string like so:>> [text> ]Pattern> =1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ[/text]>> [text]RandomString=[/text]>> [loop start=1&end=5&advance=1]> [text]nextchar=[math]ceil([RANDOM format=float]*62)[/math]=[/text]> [text]RandomString=[RandomString][GetChars > start=[nextchar]&end=[nextchar]][Pattern][/GetChars][/text]> [/loop]>> (2) Write the solution [RandomString] to a file.>> (3) use Imagemagick to put our [RandomString] onto a background > image (background.gif) that we have already set up for this purpose > like so:>> [shell]/usr/local/bin/convert -size 180x65 xc:white -tile captcha/ > background.gif -draw "color 0,0 reset" -draw "font '/Library/Fonts/ > Verdana' font-size 42 fill white stroke black stroke-width 2 > translate 10,45 text 0,0 '[RandomString]'" 'captcha/text.png'[/shell]>> (4) Insert your image "captcha/text.png" into your form.>> (5) When the user submits their form compare their answer to the > solution you saved in the text file in step 2.>> (6) Drink champagne :-)>> Phil Ronchetti>>> -------------------------------------------------------------> This message is sent to you because you are subscribed to> the mailing list .> To unsubscribe, E-mail to: > To switch to the DIGEST mode, E-mail to >> Web Archive of this list is at: http://webdna.smithmicro.com/-------------------------------------------------------------This message is sent to you because you are subscribed to the mailing list .To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://webdna.smithmicro.com/
Stuart Tremain
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