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Improve captcha.sh script documentation

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Mickaël Rémond 2019-05-25 11:21:30 +02:00 committed by GitHub
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tools/captcha.sh
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@ -1,5 +1,18 @@
#!/bin/sh
# This script is an example captcha script.
# It takes the text to recognize in the captcha image as a parameter.
# It return the image binary as a result. ejabberd support PNG, JPEG and GIF.
# The whole idea of the captcha script is to let server admins adapt it to
# their own needs. The goal is to be able to make the captcha generation as
# unique as possible, to make the captcha challenge difficult to bypass by
# a bot.
# Server admins are thus supposed to write and use their own captcha generators.
# This script relies on ImageMagick.
# It is NOT compliant with ImageMagick forks like GraphicsMagick.
INPUT=$1
if test -n ${BASH_VERSION:-''} ; then