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minor update

    1: #!/usr/bin/perl
    2: #
    3: # lcuserdel
    4: #
    5: # Scott Harrison
    6: # October 27, 2000
    7: 
    8: use strict;
    9: 
   10: # This script is a setuid script (chmod 6755) that should
   11: # be run by user 'www'.  It DOES NOT delete directories.
   12: # All it does is remove a user's entries from
   13: # /etc/passwd, /etc/groups, and /etc/smbpasswd.
   14: 
   15: 
   16: 
   17: # Standard input usage
   18: # First line is USERNAME
   19: 
   20: # Command-line arguments [USERNAME]
   21: # Yes, but be very careful here (don't pass shell commands)
   22: # and this is only supported to allow perl-system calls.
   23: 
   24: # Usage within code
   25: #
   26: # $exitcode=system("NAME")/256;
   27: # print "uh-oh" if $exitcode;
   28: 
   29: # These are the exit codes.
   30: 
   31: # Security
   32: $ENV{'PATH'}=""; # Nullify path information.
   33: $ENV{'BASH_ENV'}=""; # Nullify shell environment information.
   34: 
   35: # Do not print error messages if there are command-line arguments
   36: my $noprint=0;
   37: if (@ARGV) {
   38:     $noprint=1;
   39: }
   40: 
   41: open (IN, "</etc/passwd");
   42: my @lines=<IN>;
   43: close IN;
   44: my $wwwid;
   45: for my $l (@lines) {
   46:     chop $l;
   47:     my @F=split(/\:/,$l);
   48:     if ($F[0] eq 'www') {$wwwid=$F[2];}
   49: }
   50: if ($wwwid!=$<) {
   51:     print("User ID mismatch.  This program must be run as user 'www'\n") unless $noprint;
   52:     exit 1;
   53: }
   54: &disable_root_capability;
   55: 
   56: # Gather input.  Should only be 3 values.
   57: my @input;
   58: if (@ARGV==3) {
   59:     @input=@ARGV;
   60: }
   61: elsif (@ARGV) {
   62:     print("Error. This program needs 3 command-line arguments (username, old password, new password).\n") unless $noprint;
   63:     exit 2;
   64: }
   65: else {
   66:     @input=<>;
   67:     if (@input!=3) {
   68: 	print("Error. Three lines need to be entered into standard input.\n") unless $noprint;
   69: 	exit 3;
   70:     }
   71:     map {chop} @input;
   72: }
   73: # Handle case of another lcpasswd process
   74: unless (&try_to_lock("/tmp/lock_lcpasswd")) {
   75:     print "Error. Too many other simultaneous password change requests being made.\n" unless $noprint;
   76:     exit 4;
   77: }
   78: 
   79: 
   80: