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Shell Programming and Scripting
Finding valid users
Post 15093 by Jimbo on Sunday 10th of February 2002 10:54:42 AM
02-10-2002
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an someone help me how do i do this..
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LEARN ABOUT DEBIAN
fascistcheck
FascistCheck(3) Debian GNU/Linux manual FascistCheck(3) NAME
FascistCheck - a pro-active password checker library SYNOPSIS
#include <crack.h> static char const CRACKLIB_DICTPATH[] = ...; extern char const * FascistCheck(char const passwd[], char const dictpath[]); DESCRIPTION
cracklib is a library containing the FascistCheck C function which may be used in a "passwd" like program. The idea is simple: try to pre- vent users from choosing passwords that could be guessed by "crack" by filtering them out, at source. cracklib is an offshoot of the the version 5 of the "crack" software and contains a considerable number of ideas nicked from the new software. The first formal argument password is the potential password. The second formal argument dictpath is the full path name + filename prefix of the cracklib dictionary database. FascistCheck returns the NULL pointer for a good password, or a pointer to a diagnostic string if it is a weak password. The database is in a binary format generated by the utilities crack_mkdict(8) and crack_packer(8). On a Debian system the database is located in the directory defined by the static constant CRACKLIB_DICTPATH and is set to /var/cache/cracklib/cracklib_dict. None of the subroutines in the cracklib libraries have this location hard-coded into their implementations. It is generated daily with the program /etc/cron.daily/cracklib. FILES
/var/cache/cracklib/cracklib_dict.[hwm|pwd|pwi] cracklib dictionary database files used by utilities. /etc/cron.daily/cracklib cracklib daily cron program to rebuild the cracklib dictionary database. /etc/cracklib/cracklib.conf cracklib configuration file used by the cracklib daily cron program to rebuild the cracklib dictionary database. /usr/sbin/crack_mkdict cracklib shell script to create initial list of words for dictionary database. /usr/share/doc/cracklib2-dev/examples Example cc(1) source files that show how FascistCheck is used. SEE ALSO
crack_teststr(8), crack_mkdict(8), update-cracklib(8) /usr/share/doc/cracklib2-dev/examples /usr/share/doc/cracklib2/cracklib2.html /usr/share/doc/cracklib2-dev/cracklib2-dev.html AUTHOR
cracklib2 is written by Alec Muffett <alecm@crypto.dircon.co.uk>. Manual added by Jean Pierre LeJacq <jplejacq@quoininc.com>. 2.7-8.5 Wed, 3 Oct 2001 01:37:09 +0100 FascistCheck(3)