Date: Fri, 31 May 1996 18:08:24 -0600 From: Sean Kelly <kelly@fsl.noaa.gov> To: ims@bcgrizzly.com Cc: questions@freebsd.org Message-ID: <199606010008.AAA24931@gatekeeper.fsl.noaa.gov> In-Reply-To: <199606010001.RAA21750@kodiak.bcgrizzly.com> (message from Ed Imhoff on Fri, 31 May 96 19:49:49 -700)
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>>>>> "Ed" == Ed Imhoff <ims@bcgrizzly.com> writes:
Ed> Hello :) I'm trying to code some HTML to allow a user to login
Ed> via WWW interface. How do I create a form that authenticates
Ed> a user???
In C, look up the user's password entry with getpwent(3), then get the
password salt from the pw_passwd field and pass that along with the
typed password to crypt(3). Compare the result to the pw_passwd field
with strcmp(3). If it's identical, authenticate. If not, punt 'em
out.
The perl solution is similar and is left as an exercise. :-)
See /usr/src/usr.bin/login/login.c for sample code.
--
Sean Kelly
NOAA Forecast Systems Laboratory kelly@fsl.noaa.gov
Boulder Colorado USA http://www-sdd.fsl.noaa.gov/~kelly/
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