Return to lcuseradd CVS log

Up to [LON-CAPA] / loncom

fixing up exit code documentation for lcpasswd and lcuserdel.  lcuseradd
useradd system call syntax still incorrect here.  I'm putting in more
of the setuid handling code. -Scott

    1: #!/usr/bin/perl
    2: #
    3: # lcuseradd
    4: #
    5: # Scott Harrison
    6: # October 27, 2000
    7: 
    8: use strict;
    9: 
   10: # This script is a setuid script that should
   11: # be run by user 'www'.  It creates a /home/USERNAME directory
   12: # as well as a /home/USERNAME/public_html directory.
   13: # It adds user entries to
   14: # /etc/passwd and /etc/groups.
   15: # Passwords are set with lcpasswd.
   16: # www becomes a member of this user group.
   17: 
   18: # Standard input usage
   19: # First line is USERNAME
   20: # Second line is PASSWORD
   21: # Third line is PASSWORD
   22: 
   23: # Command-line arguments [USERNAME] [PASSWORD] [PASSWORD]
   24: # Yes, but be very careful here (don't pass shell commands)
   25: # and this is only supported to allow perl-system calls.
   26: 
   27: # Usage within code
   28: #
   29: # $exitcode=system("/home/httpd/perl/lcuseradd","NAME","PASSWORD1","PASSWORD2")/256;
   30: # print "uh-oh" if $exitcode;
   31: 
   32: # These are the exit codes.
   33: 
   34: # Security
   35: $ENV{'PATH'}=""; # Nullify path information.
   36: $ENV{'BASH_ENV'}=""; # Nullify shell environment information.
   37: 
   38: # Do not print error messages if there are command-line arguments
   39: my $noprint=0;
   40: if (@ARGV) {
   41:     $noprint=1;
   42: }
   43: 
   44: # Read in /etc/passwd, and make sure this process is running from user=www
   45: open (IN, "</etc/passwd");
   46: my @lines=<IN>;
   47: close IN;
   48: my $wwwid;
   49: for my $l (@lines) {
   50:     chop $l;
   51:     my @F=split(/\:/,$l);
   52:     if ($F[0] eq 'www') {$wwwid=$F[2];}
   53: }
   54: if ($wwwid!=$<) {
   55:     print("User ID mismatch.  This program must be run as user 'www'\n") unless $noprint;
   56:     exit 1;
   57: }
   58: &disable_root_capability;
   59: 
   60: # Handle case of another lcpasswd process
   61: unless (&try_to_lock("/tmp/lock_lcpasswd")) {
   62:     print "Error. Too many other simultaneous password change requests being made.\n" unless $noprint;
   63:     exit 4;
   64: }
   65: 
   66: # Gather input.  Should be 3 values (user name, password 1, password 2).
   67: my @input;
   68: if (@ARGV==1) {
   69:     @input=@ARGV;
   70: }
   71: elsif (@ARGV) {
   72:     print("Error. This program needs 3 command-line arguments (username, password 1, password 2).\n") unless $noprint;
   73:     unlink('/tmp/lock_lcpasswd');
   74:     exit 2;
   75: }
   76: else {
   77:     @input=<>;
   78:     if (@input!=1) {
   79: 	print("Error. Three lines should be entered into standard input.\n") unless $noprint;
   80: 	unlink('/tmp/lock_lcpasswd');
   81: 	exit 3;
   82:     }
   83:     map {chop} @input;
   84: }
   85: 
   86: my ($username,$password1,$password2)=@input;
   87: $username=~/^(\w+)$/;
   88: my $safeusername=$1;
   89: $password1=~/^(\w+)$/;
   90: my $password1=$1;
   91: $password2=~/^(\w+)$/;
   92: my $safepassword2=$1;
   93: 
   94: &enable_root_capability;
   95: 
   96: # Add user entry to /etc/passwd and /etc/groups in such
   97: # a way that www is a member of the user-specific group
   98: 
   99: # This command 'should' make the user be a member of just
  100: 
  101: if (system('/usr/sbin/useradd','-c','LON-CAPA user','-G','www',$safeusername)) {
  102:     print "Error.  Something went wrong with the addition of user \"$safeusername\".\n";
  103:     unlink('/tmp/lock_lcpasswd');
  104:     exit 5;
  105: }
  106: 
  107: # Set password with lcpasswd (which creates smbpasswd entry).
  108: