Two ideas for you. First - you could whip something together to take all the existing user:pass hashes in the /etc/passwd or /etc/shadow (wherever your distro puts them) and drop them into a passwd file. Perl and login both use the same crypt scheme to develop those encrypted passwords so verification from there is easy. However this isn't such a hot solution as it requires your web browser having permission to read the passwd file - which means it's similar to posting your /etc/passwd onto the web (or could be similar to...someone would have to find it first). My second idea is to whip together a really quick, really small, suidroot script (I know bad idea - but it's small so it's easy to make secure and it's not going to do anything except read the passwd/shadow file and spit back a 1 or a 0). As I said that script can take input on the command line (the l/p of the user) and can then use that to match against the l/p stored in the existing user account DB (passwd/shadow). Have it return 0 for a failure, 1 for a pass. Call it from your script with backticks and assign the stdout to a variable. Check the variable for a 1 or a 0 and you've got your answer. Without root permissions on the script there are only so many ways out...

-Adam Stanley
Nethosters, Inc.

In reply to Re: Unix Authentication by astanley
in thread Unix Authentication by nick

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