WwManage

Description of script

#!/usr/bin/perl -w
use strict;
#
# wwManage: manage webwork gateways/homework courses
# 
my $version = '1.702';
my $lastmod = '13 Jan 2011';
# changelog: 
#    1.702: remove -o option, add comments, add $mailDomain variable
#    1.701: add domain extensions to e-mail addresses
#    1.70: allow inclusion of course coordinators when batch adding
#          courses
#    1.691: bug fix: correct e-mail addresses when adding courses
#    1.69: update to avoid roster saving, make batch course add the default,
#          allow for other campus extensions on roster files
#    1.68: correct year for winter terms
#    1.67: tweak definitions for current/new terms, restrict ls in listArchive,
#          handling of CSV files
#    1.66: update proctorDir
#    1.65: add option to just use existing set definition files when 
#          adding assignments
#    1.6:  update addproctors to allow add of course-specific proctors
#    1.55: take out copy of template courses in addCourses2, as that seems
#          to be introducing an error in WeBWorK
#    1.54: bugfix
#    1.53: ignore blank lines in proctor list files
#    1.52: update path to proctor page
#    1.51: clean up handling of admin addition to roster when instructor = admin
#    1.5:  debug and finish adding updateRosters() functionality (except for
#         moving course/set data)
#    1.42: add list archive feature
#    1.41: allow access to old paths with -o or --old flag
#    1.4:  update addCourses to back away from calling the addscript,
#         add archive/delete functions
#    1.32: correct use lib commands to find WeBWorK modules at compile time
#    1.31: correct prompt for delProctors()
#    1.3:  revise addProctors() to have smart path, add delProctors(),
#         make set assignment solicit which courses, add updateRosters()
#    1.23: make smart path selection
#    1.22: revise addCourses() to make filenames display for TAs and profs
#    1.21: revise addCourses() to make instructors have TA permissions
#    1.2:  add 'add proctors' function, correct @groupSets for new g/w
#    1.1:  include jan in build dates for Winter term courses, 
#         take out code to make proctored tests unpublished, 
#         eliminate noecho for admin password
#         allow no password in input for add courses, in which case we use
#           the instructors ID# for the password
#
# (c)2008 Gavin LaRose/Regents of the University of Michigan
# 
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#-------------------------------------------------------------------------------
# global variables
#
my ( $archiveDir, $dataDir, $wwHome, $rosterDir, $htuser, $htgroup,
     $proctorDir, $wwCourseDir );

$archiveDir = '/opt/webwork/Old';
$dataDir = '/path/to/classlists/data';
$proctorDir = '/path/to/gateways/data';

# my $dataDir = '/afs/lsa.umich.edu/user/g/l/glarose/Private/mathhome/mich/' . 
#     'production/gateways/webwork/data/classlists/F05';

# where do we put output webwork rosters?
$rosterDir = "/path/to/gateways/webwork/data/NEWTERM/CRS";
# do we save them at all?
my $saveWWrosters = 0;

# a default file giving the courses and instructors to create when
#    building classes; format is
#    course#, section#, username, lastname, firstnames, id#
#    or
#    course#, section#, username, lastname, firstnames, id#, password
my $instrFile = 'instr.csv';

# these extensions on an instructor file flag that we should look
#    for alternate roster names: CRS_SXN_EXT.csv, instead of CRS_SXN.csv
my @fileCampusExt = ( '_umd' );
# and these extensions on course names similarly; the order of these
#    extensions is the same as in @fileCampusExt
my @courseCampusExt = ( '-umd' );
# admin users for these extensions are:
my %courseCampusAdmins = 
    ( '-umd' => { 'user_id' => 'username',
		   'student_id' => '007',
		   'last_name' => 'Last',
		   'first_name' => 'First' }, );

# default e-mail domain
my $mailDomain = 'umich.edu';

$wwHome = '/opt/webwork/webwork2';
$wwCourseDir = "$wwHome/courses";

# set environment variables to allow use of WeBWorK scripts
$ENV{WEBWORK_ROOT} = $wwHome;
$ENV{MOD_PERL_API_VERSION} = 2;

# such as the following
my $addScript = "$wwHome/bin/addcourse";
my $delScript = "$wwHome/bin/delcourse";
# command line for addcourse is (assume sql_single layout) 
#   addcourse [opts] courseID, where opts is 
#   --db-layout=layout --users=file --professors=id,id --templates-from=course
# command line for delcourse is delcourse courseID, and removes the course 
#   from the database and deletes the course directory
# load needed webwork libraries
use lib '/opt/webwork/pg/lib';
use lib '/opt/webwork/webwork2/lib';

use WeBWorK::PG::ImageGenerator;
use WeBWorK::CourseEnvironment;
use WeBWorK::DB;
use WeBWorK::DB::Record::User;
use WeBWorK::DB::Record::Password;
use WeBWorK::DB::Record::PermissionLevel;
use WeBWorK::ContentGenerator;              # get these to get set importing
use WeBWorK::ContentGenerator::Instructor;  #   functions
use WeBWorK::ContentGenerator::Instructor::ProblemSetList;
use WeBWorK::Utils::CourseManagement;

# define "current" academic term; this is the immediately completed term,
#   used for archiving old courses; also define new term
my @times = localtime();  my $curTerm;  my $newTerm;
my $month = $times[4] + 1;
my $year = substr($times[5],-2);
if ( $month > 9 || $month < 2 ) {  # month b/t oct & jan, inclusive
    $curTerm = "F$year";
    $newTerm = "W" . sprintf("%02d", ($month > 9 ? ($year+1) : $year));
} elsif ( $month < 6 ) {  # month before june
    $curTerm = "W$year";
    $newTerm = "S$year";
} elsif ( $month < 8 ) {  # month before august
    $curTerm = "S$year";
    $newTerm = "U$year";
} else {
    $curTerm = "U$year";
    $newTerm = "F$year";
}
# override newterm
# $newTerm = "F10";

$rosterDir =~ s/NEWTERM/$newTerm/;

# output format: format for each line of webwork course lists
#                id,  lname, fname,C , , sxn, rec, uniq           , uniq
my $wwclFormat = "%8s ,%20s ,%20s ,C , , %3s ,%3s ,%8s\@$mailDomain ,%8s\n";

my $myName = "wwManage";
# an admin user to add to all classes
my $adminUser = "username";
my $adminID = 'idnumber';
my $adminLname = "lastname";
my $adminFname = "firstname";

$htuser = "apache";
$htgroup = "apache";

# list writing format variables
my ( $i1, $i2, $i3, $n1, $n2, $n3 );

# output format

my @stu_output_data;
format FN = 
@<<<<<<<<<<<<<<<<<<<<<<<<  Math @<<<<<<<  @<<<<<<<<<<@||||||||
@stu_output_data
.

# these sets aren't assigned to everyone; they just need to be imported
#   when we're adding assignments to a course
# precal assignments also include "substitution", but this is the same 
#   name as the integral topic
my @groupSets = ( qw( exponents frac_exponents fractions graphs lines
		       multistep solving_linsys polynomials solving_quadratics
		       chain_rule exponentials powers_sums product_rule
		       quotient_rule symbolic trig_func_logs 
		       simple_definite tan_line
		       ax_substitution basic_antidif by_parts 
		       exponentials_int logarithms_int polynomials_int
		       rational_functions_int roots_int substitution
		       trig_functions_int ) );

# this term ordering is a bit arbitrary, and makes the fall term from
# the previous calendar year be grouped with those other terms in the 
# current year
my %termOrder = ( 'F' => 1, 'W' => 2, 'S' => 3, 'U' => 4 );

#-------------------------------------------------------------------------------
# main
# 

main(@ARGV);
# suppress residual errors (why is this necessary?)
open( DN, ">/dev/null" );
*STDERR = *DN;

sub main {
# unbuffer output
    select STDERR; $| = 1;
    select STDOUT; $| = 1;

    warn(" ** $myName called with arguments: none expected.  (Ignoring.)\n")
	 if ( @_ );
    printHdr();               # welcome to the machine

    my $action = getAction();

    while ( $action ) {
	 if ( $action == 2 )    { delCourses();     }
	 elsif ( $action == 1 ) { listCourses();    }
	 elsif ( $action == 3 ) { addCourses2();    }
	 elsif ( $action == 4 ) { addAssignments(); }
	 elsif ( $action == 5 ) { addProctors();    }
	 elsif ( $action == 6 ) { delProctors('global'); }
	 elsif ( $action == 7 ) { delProctors('course'); }
	 elsif ( $action == 8 ) { updateRosters();  }
	 elsif ( $action == 9 ) { listArchives();   }

	 print "\n";
	 $action = getAction();
    }
}

#-------------------------------------------------------------------------------
# subroutines
#
sub printHdr {
    print "\n$myName: ver $version (last mod $lastmod)\n";
    print "  * update script for WeBWorK gateway/homework courses * \n";
    print "  * added courses will be for term $newTerm * \n\n";
    return 1;
}

sub getAction {
    print <<eol;
Main Menu:
Select: 1. list defined courses
	 2. delete and archive course(s) from list of defined courses
	 3. add course(s) to system
	 4. create assignments in course
	 5. add proctors to courses
	 6. delete global proctors from courses
	 7. delete course proctors from courses
	 8. update rosters from course CSV files
	 9. list archived courses
	 0. quit
eol
    my $action = -1;
    while ( $action !~ /^[0-9]$/ ) {
	 print "  selection> ";
	 chomp($action = <STDIN>);
	 warn " ** value must be between 0 and 8.\n" if ( $action !~ /^[0-8]$/ );
    }
    print "\n";
    return $action;
}

sub listCourses {
# pre:  input is $classRef, a reference to a hash of courses to list, such
#       that $classRef->{ crsName } = [ crs#, sxn# ], or no input is provided
# post: a list of those courses in %$classRef is printed, or the list of all
#       classes in the system is obtained and listed.

    my %classList;
    if ( @_ ) {
	 my $classRef = shift;
	 %classList = %$classRef;    # this defines the current list of classes
    } else {                        #   under consideration
	 %classList = getClasses();
    }
    if ( %classList ) {
	 print "  * courses in list * \n";
	 my @keyList = sort keys %classList;
	 my $num1 = int(scalar(@keyList)/3);
	 my ($num2, $num3);
	 if ( $num1 == scalar(@keyList)/3 ) {
	     $num2 = $num1;
	     $num3 = $num1;
	 } else {
	     $num3 = $num1;
	     $num2 = $num1+(scalar(@keyList) - (3*$num1+1));
	     $num1 = $num1+1;
	 }
	 my $i;
	 my $stdout = select(STDOUT);
	 my $oldFormat = $~;
	 $~ = "CLIST";
	 select $stdout;
	 for($i=1; $i<=$num3; $i++) {
	     $i1 = $i;             $n1 = $keyList[$i-1];
	     $i2 = $i+$num1;       $n2 = $keyList[$i-1+$num1];
	     $i3 = $i+$num1+$num2; $n3 = $keyList[$i-1+$num1+$num2];
	     write;
	 }
	 if ( $num2 == $i ) {
	     $stdout = select(STDOUT);
	     $~ = "CLIST2";
	     select $stdout;
	     $i1 = $i;       $n1 = $keyList[$i-1];
	     $i2 = $i+$num1; $n2 = $keyList[$i-1+$num1];
	     write;
	 } elsif ( $num1 == $i ) {
	     $stdout = select(STDOUT);
	     $~ = "CLIST1";
	     select $stdout;
	     $i1 = $i; $n1 = $keyList[$i-1];
	     write;
	 }
	 $stdout = select(STDOUT);
	 $~ = $oldFormat;
	 select $stdout;
    } else {
	 die(" ** error getting list of defined courses * \n");
    }
    return 1;
}
format CLIST =
  @>>. @<<<<<<<<<<<<<<<<<<  @>>. @<<<<<<<<<<<<<<<<<<  @>>. @<<<<<<<<<<<<<<<<<<
  $i1, $n1,                 $i2, $n2,                 $i3, $n3
.
format CLIST1 =
  @>>. @<<<<<<<<<<<<<<<<<<
  $i1, $n1
.
format CLIST2 = 
  @>>. @<<<<<<<<<<<<<<<<<<  @>>. @<<<<<<<<<<<<<<<<<<
  $i1, $n1,                 $i2, $n2
.

sub listArchives { 
# pre: 
# post: a list of the archived courses found in $archiveDir is displayed

    my @termList = `/bin/ls $archiveDir`;
    @termList = grep { $_ !~ /.*\.tar\.bz2/ } @termList;
    for ( my $i=0; $i<@termList; $i++ ) { chomp($termList[$i]); }

    @termList = sort byTerm @termList;
    my %archiveList = ( );
    foreach my $term ( @termList ) {
	 my @aList = `/bin/ls $archiveDir/$term`;

	 for ( my $i=0; $i<@aList; $i++ ) {
	     chomp($aList[$i]);
	     $aList[$i] =~ s/^ma(.*?)(-?[fwsuFWSU]\d\d)?\.tar\.gz$/$1/;
	 }
	 $archiveList{$term} = [ @aList ];
    }
    if ( @termList ) {
	 print " * courses archived:\n";
	 my $numListed = 0;
	 foreach my $term ( @termList ) {
	     print "    $term:", 
		 hangIndent(9,75,9,join(', ', @{$archiveList{$term}})), "\n";
	     $numListed += @{$archiveList{$term}};
	 }
	 if ( $numListed > 100 ) {
	     print "    [cr to continue]";
	     my $pause = <STDIN>;
	 }
    } else {
	 print " * no archived courses to list *\n";
    }
    print "\n";
    return 1;
}

sub byTerm {
    my ( $aTerm, $aYear )  = ( $a =~ /([FWSU])(\d\d)/i );
    my ( $bTerm, $bYear )  = ( $b =~ /([FWSU])(\d\d)/i );
    $aTerm = uc($aTerm); $bTerm = uc($bTerm);
    if ( $aTerm eq 'F' ) { $aYear = sprintf("%02d", $aYear+1); }
    if ( $bTerm eq 'F' ) { $bYear = sprintf("%02d", $bYear+1); }
    return $bYear . $termOrder{$bTerm} cmp $aYear . $termOrder{$aTerm};
}

sub getClasses {
    my $crsNum = shift();
# pre:  $crsNum is an optional input to restrict the list of classes
#       generated to only classes with that course number
# post: a reference to hash of classes defined in the system is returned:
#       $hash{ crsName } = [ crs#, sxn# ]
#
    my %cl = ();
    my $error = ;

    $crsNum = 'any' if ( ! defined( $crsNum ) );

# generate a list of courses by looking in the course directory in 
# the webwork install
    my @courses = `/bin/ls -dF $wwHome/courses/*`;
    foreach my $courseName ( @courses ) {
	 next if ( $courseName !~ /\/$/ || $courseName =~ /CVS/ );
	 chomp($courseName);
	 $courseName =~ s/.*\/([^\/]+)\/$/$1/;
	 my $cNum = ;
	 my $sNum = ;
	 if ( $courseName =~ /^ma(\d{3})-(.+)$/i ) {
	     $cNum = $1; 
	     $sNum = $2;
	 } elsif ( $courseName =~ /^ma(\d{3})[fwsu]\d{2}$/ ) {
	     $cNum = $1;
	     $sNum = 'all';
	 } else { 
	     $cNum = $courseName;
	     $sNum = '001';
	 }
# save the class information if it has the correct course
# number
	 $cl{ $courseName } = [ $cNum, $sNum ]
	     if ( $crsNum eq 'any' || $cNum eq $crsNum );
    }
    return %cl;
}

sub delCourses {
# pre: 
# post: we prompt for a list of course-sections to archive and delete,
#       from the courses available in the system.  and then we archive 
#       and delete them.

    print " * archive and delete course(s) from system *\n";
    print " * select courses to archive and delete delete *\n";
    my %classList = getClasses();
    my @classes = sort keys %classList;
    listCourses( \%classList );
    print " * archive, delete which (0 to abort|n1,n2-n3,n4)> ";
    my $delStr = <STDIN>;
    chomp($delStr);
    my @delList = getList($delStr, scalar(@classes));
    while ( ! @delList ) {
	 print " * archive, delete which (0 to abort|n1,n2-n3,n4)> ";
	 chomp($delStr = <STDIN>);
	 @delList = getList( $delStr, scalar(@classes) );
    }
# case of abort delete
    return 0 if ( $delList[0] == 0 );

# ok, otherwise we have a list of course numbers; get a list of names
    my @delClasses = ();
    foreach ( @delList ) { push( @delClasses, $classes[$_-1] ); }

# go through list creating options hashes to pass to archiveCourse
    my @options = ();
    my %dbOpts = ();
    foreach my $cl ( @delClasses ) {
	 my $ce = WeBWorK::CourseEnvironment->new( { webwork_dir=>$wwHome,
						     courseName=>$cl } );
	 push( @options, { courseID => $cl, ce => $ce, dbOptions => \%dbOpts } );
    }

# make sure we have the correct archive term
    print " * archive term [$curTerm] > ";
    my $arTerm = <STDIN>;
    chomp($arTerm);
    if ( $arTerm eq  ) { $arTerm = $curTerm; }

    my $clstring = hangIndent(8,60,0,join(', ', @delClasses));
    print " * ready to archive and delete classes\n        ",
	 $clstring, "\n * abort? ([cr] = no) > ";
    my $ans = <STDIN>;
    chomp( $ans );
    if ( $ans !~ /^$/ ) { return 0; }

    my @archives = ();
    print " * archiving courses: ";
    foreach my $opt ( @options ) {
	 print $opt->{courseID}, "..";
	 eval { WeBWorK::Utils::CourseManagement::archiveCourse(%$opt); };
	 if ( $@ ) {
	     my $error = $@;
	     print STDERR "$error\n";
	     exit;
	 }
	 push( @archives, $opt->{courseID} . ".tar.gz" );
    }
    print "done.\n * moving archive files to archive directory: ";
    my $saveDir = $archiveDir;
    if ( ! -d "$archiveDir/$arTerm" ) {
	 $saveDir = "$archiveDir/$arTerm" if ( mkdir "$archiveDir/$arTerm" );
    } else {
	 $saveDir = "$archiveDir/$arTerm";
    }
    foreach ( @archives ) {
	 if ( rename( "$wwCourseDir/$_", "$saveDir/$_" ) ) {
	     print ".";
	 } else {
	     print STDERR " * ERROR moving $_\n";
	 }
    }

    print "done.\n * deleting courses: ";
    foreach my $opt ( @options ) {
	 print $opt->{courseID}, "..";
	 eval { WeBWorK::Utils::CourseManagement::deleteCourse(%$opt); };
	 if ( $@ ) {
	     my $error = $@;
	     print STDERR "$error\n";
	     exit;
	 }
    }
    print "\n * done\n";

    return 0;
}

sub addCourses2 {
# pre:  
# post: we prompt for a list of course-sections to add, in the format
#         CRS,SXN,"UNIQNAME","LastName","FirstName","[Middle]",ID,"password"
#       e.g., 115,027,"GLAROSE","LaRose","Peter","G",12345678,"something",
#       and add those courses to the system, copying templates from a 
#       selected course.
#       password may be omitted from lists

    print " * add course(s) to system *\n";
    my ( $addArray, $fileExt ) = getAddCourses();
    my @adds = @{$addArray};
# now $adds[$i] = [ CRS, SXN, uniqname, Last, First, [Middle], id[, passwd ]

    if ( @adds ) {
# go through and make a list of added course fields
	 my %addClasses = ();  # $addClasses{105-001} = [ @adds_fields ]
# a list of the courses these are associated with
	 my @addCourseList = ();

	 my $crsNum = ;
	 foreach ( sort @adds ) {
    # @fields = 116,003,glarose,LaRose,Gavin,[Middle],12345678,password
    #   note quotes are stripped in getAddCourses
	     my @fields = split(/[,\t]/);
	     $fields[1] = sprintf("%03d", $fields[1]); # get to 00x
	     chomp($fields[-1]);
	 # promote id to password if we didn't get the password field
	     if ( @fields < 8 ) { $fields[7] = $fields[6]; }

	     $addClasses{"$fields[0]-$fields[1]"} = [ @fields ];

	     $crsNum = $fields[0] if ( ! $crsNum );

	     push( @addCourseList, $crsNum )
		 if ( ! grep(/^$crsNum$/, @addCourseList ) );
	 }

	 my %options = ( );

# now we need to get the users file lists...  
	 my $ext = 0;
	 my %fileNames = buildUserLists( \%addClasses, $fileExt );

# figure out if we're adding any coordinators to these
	 my %addCoordUsers = ();
	 print " * got user lists for course adds\n";
	 foreach my $c ( @addCourseList ) {
	     print "  * add course coordinator to $c [uniq|n|N to all] > ";
	     my $u = <STDIN>;
	     chomp($u);
	     if ( $u eq 'N' ) {
		 last;
	     } elsif ( $u eq 'n' ) {
		 next;
	     } else {
		 if ( grep( /^$u$/, ( map { $addClasses{$_}->[2] }
				      keys( %addClasses ) ) ) ) {
		     my ( $csu ) = grep( /^$c-\d{3}$u$/, 
					 ( map { $_ . $addClasses{$_}->[2] }
					   keys( %addClasses ) ) );
		     $csu =~ s/$u$//;
		     my @dat = @{ $addClasses{$csu} };
		     $addCoordUsers{$c} = [ @dat ];
		 } else {
		     print "  * coordinator data: Last,First,Middle,ID# > ";
		     my $dat = <STDIN>;
		     chomp($dat);
		     $addCoordUsers{$c} = [ $c, '000', $u, split(/,\s*/, $dat) ];
		 }
	     }
	 }
 

# this returns $fileNames{ crs-sxn } = userlist filename
# abort if we had an error
	 return 0 if ( defined( $fileNames{Error} ) && $fileNames{Error} );

# all set now: we can go ahead and invoke the addcourse script
	 print " * ready to add classes. [cr] to continue > ";
	 my $ans = <STDIN>;
	 print " * adding courses: ";

	 ## do we have a course or e-mail domain extension?
	 my $crsExt = ;
	 my $domExt = ;
	 if ( $fileExt ) {
	     foreach ( my $i=0; $i<@fileCampusExt; $i++ ) {
		 if ( $fileExt eq $fileCampusExt[$i] ) {
		     $crsExt = $courseCampusExt[$i];
		     $domExt = $crsExt;
		     $domExt =~ s/^-(.+)/$1\./;
		     last;
		 }
	     }
	 }

	 foreach my $cs ( sort keys %addClasses ) {
	     print "$cs..";
# in the long run, we probably want the term, too
	     my $courseID = "ma${cs}${crsExt}-$newTerm";
#	    my $courseID = "ma${cs}";
	     $courseID = lc($courseID);

	     my $instrUniq  = $addClasses{$cs}->[2];
	     my $instrIdnum = $addClasses{$cs}->[6];

    # get a minimal course environment and hack to get record formats
	     my $ce = WeBWorK::CourseEnvironment->new({webwork_dir=>$wwHome,
						       courseName=>$courseID});
	     my $dbLayout = $ce->{dbLayoutName};
	     my %courseOptions = ( dbLayoutName => $dbLayout );
	     my $userCl = $ce->{dbLayouts}->{$dbLayout}->{user}->{record};
	     my $passCl = $ce->{dbLayouts}->{$dbLayout}->{password}->{record};
	     my $permCl = $ce->{dbLayouts}->{$dbLayout}->{permission}->{record};

	     my @users = ();
	     my ($sxn, $rcn);
	     foreach my $uline ( `/bin/cat $fileNames{$cs}` ) {
		 my %urec;
		 my $userId;
		 my $passWd;
		 my @fields = csvSplit( $uline );

		 if ( $saveWWrosters ) {
	     # lines are 
	     #     12345678 , Last , First ,C , , CRS ,SXN , email , uniq

	     # this is cribbed from addcourse, and includes extra fields from
	     # there.  note that the userlist we get from the file does not 
	     # include the professor; we add that user below
		     my $email = ( $fields[7] =~ /@/ ) ? $fields[7] :
			 "$fields[7]\@${domExt}$mailDomain";
		     %urec = ( 'student_id' => $fields[0],
			       'last_name' => $fields[1],
			       'first_name' => $fields[2],
			       'status' => 'C',
			       'comment' => ,
			       'section' => $fields[5],
			       'recitation' => $fields[6],
			       'email_address' => $email,
			       'user_id' => $fields[8],
			       'password' => $fields[0],
			       'permission' => 0 );
		     $userId = $fields[8];
		     $passWd = $fields[0];
		 } else {
	     # lines are 
	     #     CRS,SXN,uniq,Last,First Middle,12345678
		     %urec = ( 'student_id' => $fields[5],
			       'last_name'  => $fields[3],
			       'first_name' => $fields[4],
			       'status'     => 'C',
			       'comment'    => ,
			       'section'    => $fields[1],
			       'recitation' => $fields[1],
			       'email_address' => "$fields[2]\@${domExt}$mailDomain",
			       'user_id'    => $fields[2],
			       'password'   => $fields[5],
			       'permission' => 0 );
		     $userId = $fields[2];
		     $passWd = $fields[5];
		 }

		 my $User = new $userCl( %urec );
		 my $plevel = 0;
		 if ( $userId eq $instrUniq ) {
		     $plevel = 5;
		 } elsif ( $userId eq $adminUser ) {
		     $plevel = 10;
		 }
		 my $PermLevel = new $permCl( user_id=>$userId,
					      permission=>$plevel );
		 my $Password =  new $passCl( user_id=>$userId,
					      password=>cryptPass($passWd) );
		 push( @users, [ $User, $Password, $PermLevel ] );

	     }

	     my $addedCampusAdmin = 0;

	     if ( ! $saveWWrosters ) {
		 ## also add the admin user and instructor, because they
		 ##    haven't been created in the course of the
		 ##    buildUserLists routine

		 my $plevel = ($instrUniq eq $adminUser || $crsExt) ? 10 : 5;
		 if ( $crsExt && $instrUniq eq $courseCampusAdmins{$crsExt}->{user_id} ) {
		     $plevel = 10;
		     $addedCampusAdmin = 1;
		 }

		 my $User = new $userCl( ( 'student_id' => $instrIdnum,
					  'last_name'  => $addClasses{$cs}->[3],
					  'first_name' => $addClasses{$cs}->[4],
					  'status'     => 'C',
					  'comment'    => ,
					  'section'    => $addClasses{$cs}->[1],
					  'recitation' => $addClasses{$cs}->[1],
					  'email_address' => "$instrUniq\@$mailDomain",
					  'user_id'    => $instrUniq,
					  'password'   => $instrIdnum,
					  'permission' => $plevel ) );
		 my $PermLevel = new $permCl( user_id    => $instrUniq,
					      permission => $plevel );
		 my $Password  = new $passCl(user_id    => $instrUniq,
					     password => cryptPass($instrIdnum));
		 push( @users, [ $User, $Password, $PermLevel ] );

		 if ( $instrUniq ne $adminUser ) {
		     $User = new $userCl( ( 'student_id' => $adminID,
					   'last_name'  => $adminLname,
					   'first_name' => $adminFname,
					  'status'     => 'C',
					  'comment'    => ,
					  'section'    => ,
					  'recitation' => ,
					  'email_address' => "$adminUser\@$mailDomain",
					  'user_id'    => $adminUser,
					  'password'   => $adminID,
					  'permission' => 10 ) );
		     $PermLevel = new $permCl( user_id    => $adminUser,
					       permission => 10 );
		     $Password  = new $passCl( user_id    => $adminUser,
					       password => cryptPass($adminID));
		     push( @users, [ $User, $Password, $PermLevel ] );
		 }

		 my ( $c, $s ) = split( /-/, $cs );
		 if ( defined( $addCoordUsers{$c} ) &&
		      $instrUniq ne $addCoordUsers{$c}->[2] ) {
		     my $cUser = new $userCl( 
			 ( 'student_id' => $addCoordUsers{$c}->[6],
			   'last_name'  => $addCoordUsers{$c}->[3],
			   'first_name' => join(' ', ($addCoordUsers{$c}->[4],
						      $addCoordUsers{$c}->[5])),
			   'status'     => 'C',
			   'comment'    => ,
			   'section'    => ,
			   'recitation' => ,
			   'email_address' => $addCoordUsers{$c}->[2] . 
			       "\@$mailDomain",
			   'user_id'    => $addCoordUsers{$c}->[2],
			   'password'   => $addCoordUsers{$c}->[6],
			   'permission' => 10 ) );
		     my $cPermLevel = new $permCl(
			 user_id    => $addCoordUsers{$c}->[2],
			 permission => 10 );
		     my $cPassword  = new $passCl(
			 user_id  => $addCoordUsers{$c}->[2],
			 password => cryptPass($adminID));
		     push( @users, [ $cUser, $cPassword, $cPermLevel ] );
		 }

	     }

	     ## furthermore, we have to add any campus administrator
	     ##   if there should be such a beast.  this is really a bit
	     ##   too convoluted.
	     if ( $crsExt && ! $addedCampusAdmin ) {
		 my $User = new $userCl( 
		     ( 'student_id' => $courseCampusAdmins{$crsExt}->{student_id},
		       'last_name'  => $courseCampusAdmins{$crsExt}->{last_name},
		       'first_name' => $courseCampusAdmins{$crsExt}->{first_name},
		       'status'     => 'C',
		       'comment'    => ,
		       'section'    => $addClasses{$cs}->[1],
		       'recitation' => $addClasses{$cs}->[1],
		       'email_address' => $courseCampusAdmins{$crsExt}->{user_id} . "\@$mailDomain",
		       'user_id' => $courseCampusAdmins{$crsExt}->{user_id},
		       'password'   => $courseCampusAdmins{$crsExt}->{student_id},
		       'permission' => 10 ) );
		 my $PermLevel = new $permCl( user_id    => $courseCampusAdmins{$crsExt}->{user_id},
					      permission => 10 );
		 my $Password  = new $passCl(user_id    => $courseCampusAdmins{$crsExt}->{user_id},
					     password => cryptPass($courseCampusAdmins{$crsExt}->{student_id}));
		 push( @users, [ $User, $Password, $PermLevel ] );
	     }

	 # ok, now go ahead and add
	     eval( WeBWorK::Utils::CourseManagement::addCourse(
			 courseID	=> $courseID,
			 ce		=> $ce,
			 courseOptions	=> \%courseOptions,
			 dbOptions	=> { },
			 users		=> \@users,
			 %options
		 ));
	     if ( $@ ) {
		 my $error = $@;
		 print STDERR "$error\n";
		 exit;
	     }

# edit file name printing
	     my $printfor = "\$pg{specialPGEnvironmentVars}{PRINT_FILE_NAMES" .
		 "_FOR} = ['$adminUser','" . $addClasses{$cs}->[2]. "'];\n\n";
	     my @confFile = `/bin/cat $wwHome/courses/$courseID/course.conf`;
	     my $cFile = join(, @confFile);
	 #    $cFile =~ s/^(\#\s*\S+PRINT_FILE_NAMES_FOR.*)$/$1\n$printfor/s;
	     $cFile .= $printfor;
	     if ( open(OF, ">$wwHome/courses/$courseID/course.conf") ) {
		 print OF $cFile;
		 close(OF);
	     } else {
		 warn(" ** error writing conf file for course $courseID\n");
	     }
# and finally make sure that all of the files have the right user and group
	     system("/bin/chown", "-R", "$htuser:$htgroup", 
		    "$wwHome/courses/$courseID");
	 }
    } else {
	 print " ** no courses specified to add *\n";
	 return 0;
    }
}

sub getAddCourses {
# pre:  
# post: a reference to an array of courses to add and a file extension is
#       returned.  each entry in the array is a reference to an array of
#       fields: 
#         $adds[$i] = [ CRS, SXN, uniqname, Last, First, [Middle], id, passwd ]
#
    print "   interactive (0) or batch (1) add [1]> ";
    my $ans = <STDIN>;
    chomp($ans);
    $ans = 1 if ( $ans eq "" );

    my @adds = ();
    my $fileExt = ;

    if ( $ans ) {
	 my $default = ;
	 $default = "[$instrFile] "
	     if ( -f $instrFile || -f "$dataDir/$instrFile" );

	 print "   file giving courses to add (format: crs,sxn,uniq,lname," .
	     "fname mname,id,passwd\n     comma or tab separated) $default> ";
	 my $file = <STDIN>;
	 chomp($file);
	 if ( ! $file && $default ) { 
	     $file = $instrFile;
	 } else {
	     while ( ! -f $file && ! -f "$dataDir/$file" ) {
		 print "  can't locate file $file; file > ";
		 chomp($file = <STDIN>);
	     }
	 }

	 # check for special file names
	 foreach my $campExt ( @fileCampusExt ) {
	     if ( $file =~ /$campExt\./ ) {
		 $fileExt = $campExt;
		 last;
	     }
	 }

	 $file = "$dataDir/$file" if ( ! -f $file );

	 @adds = `/bin/cat $file`;
	 @adds = modifyEntries(\@adds);
# we assume that the passwords are provided at this point
#	addPasswords(\@adds);
	 die(" ** error: can't read $file\n") if ( ! @adds );
	 print "\n";
    } else {
	 my $confirm = 0;
	 while ( ! $confirm ) {
	     print "   course-section to add (e.g., 115-021) > ";
	     my $cs = <STDIN>;
	     chomp($cs);
	     print "   instructor uniqname > ";
	     my $uniq = <STDIN>;
	     chomp($uniq);
	     print "   instructor name ( First, MI, Last ) > ";
	     my $name = <STDIN>;
	     chomp($name);
	     my ($fname, $mi, $lname) = split(/,\s*/,$name); 
	     my $continue = 0;
	     my ($passwd, $passwd1, $passwd2);
	     while ( ! $continue ) {
		 print "   course password > ";
		 system('/usr/bin/stty -echo');
		 chomp($passwd1 = <STDIN>);
		 print "\n";
		 system('/usr/bin/stty echo');
		 print "             again > ";
		 system('/usr/bin/stty -echo');
		 chomp($passwd2 = <STDIN>);
		 print "\n";
		 system('/usr/bin/stty echo');
		 if ( $passwd1 eq $passwd2 ) {
		     chomp($passwd = $passwd1);
		     $continue = 1;
		 } else {
		     print "   passwords don't match.  again: \n";
		 }
	     }
	     if ( $cs eq  ) {
		 warn " ** error: empty class specified *\n";
		 return( () );
	     }
	     print "   adding course math $cs, taught by $name ($uniq)\n";
	     my ( $crs, $sxn ) = split(/-/, $cs);
	     $adds[0] = "$crs,$sxn,$uniq,$lname,$fname,$mi,$passwd\n";
	 }
    }
    return \@adds, $fileExt;
}

sub cleanEntries {
# turn input of the form
#    crs,sxn,"unq","lname","first mi","id"[,passwd]
# into 
#    crs,sxn,unq,lname,first mi[,passwd]
#
    my $addRef = shift;
#    for ( my $i=0; $i<@$addRef; $i++ ) {
#	my @ent = split(/,/, $addRef->[$i]);
#	for ( my $j=0; $j<@ent; $j++ ) {
#	    chomp($ent[$j]);
# 	    $ent[$j] =~ s/^"(.*)"$/$1/;  # this is subtle
#	    $ent[$j] =~ s/"//g; #"       # this is the brute force version
#	}
#	$addRef->[$i]=join(',', @ent);
#    }

    for ( my $i=0; $i<@{$addRef}; $i++ ) {
	 $addRef->[$i] =~ s/"//g; #"
	 $addRef->[$i] =~ s/[^\w,]/ /g;
	 $addRef->[$i] =~ s/\s*$//;
    }
#    chomp($addRef->[scalar(@{$addRef})]);
    return 1;
}

sub modifyEntries {
    my $addRef = shift();

    cleanEntries( $addRef );     # get rid of quotes, remove trailing cr
    my @newEnt = ();
    for ( my $i=0; $i<@$addRef; $i++ ) {
	 next if (! $addRef->[$i]);
	 my @fields = split(/,/, $addRef->[$i]);
	 my ($fname, $mi) = ($fields[4] =~ /(.*)\s+(\S+)$/);
	 if ( ! defined($fname) || ! $fname ) {
	     $fname = $fields[4];  $mi = ;  # using ' ' relies on edu taking
	 }                                     # all spaces as a field separator
	 $fname =~ s/\s*//g;      # get rid of spaces in names
	 $fields[3] =~ s/\s*//g;
	 push( @newEnt, join(',', ( @fields[0..3], $fname, $mi, $fields[5] )) );
	 $newEnt[-1] .= ",$fields[6]" if ( @fields == 7 );
    }
    return @newEnt
}

# sub addPasswords {
# # create and append passwords to the end of input instructor add array
#     my $addRef = shift();
#     my ( @threes, @fours );
#     loadDict($threedictfile, $fourdictfile, \@threes, \@fours);
#     for ( my $i=0; $i<@$addRef; $i++ ) {
# 	my @data = split(/,/, $addRef->[$i]);
# 	if ( @data < 7 ) {
# 	    push(@data, getpass(\@threes, \@fours));
# 	    $addRef->[$i] = join(',', @data);
# 	}
#     }
#     return 1;
# }

sub buildUserLists { 
    my ( $addRef, $ext ) = @_;
    my %adds = %{$addRef};

# pre:  $adds{105-001} = [ 105,001,uniqname,Last,First,[Middle],ID,password ]
#       $ext is optional, and indicates the extension for CSV roster filenames
# post: we go through the datadir and find the user file for each course-
#       section specified in %adds, and create a webwork user list file for 
#       each course-section.  we return the list of file names as a hash:
#       %fileNames{105-001} = filename

    $ext =  if ( ! defined( $ext ) || ! $ext );
    my %fileNames = ();

    ## if we're not saving files, just return the filelist of roster files
    if ( ! $saveWWrosters ) {
	 print "  * getting roster filenames: ";
	 foreach my $cs ( sort keys %adds ) {
	     print "$cs..";
	     my ( $cl, $sc ) = split(/-/, $cs);
	 # set some sensible section and recitation numbers
	     my $rcn = $sc;
	     my $sxn = ( $cl =~ /21[56]/ ) ? substr($sc,0,2) . '0' : $sc;

	     my $clistName = "$cs$ext.csv";
	     $clistName =~ s/-/_/;
	     while ( ! -f $clistName && ! -f "$dataDir/$clistName" ) {
		 print "\n * cannot find course list name $clistName for " .
		     "course $cs\n";
		 print " * name (blank to exit add) > ";
		 chomp( $clistName = <STDIN> );
		 if ( ! $clistName ) {
		     print " * aborting add. *\n";
		     return( ( 'Error' => 1 ) );
		 }
	     }
	     $clistName = "$dataDir/$clistName" if ( ! -f $clistName );
	     $fileNames{ $cs } = $clistName;
	 }
	 print "\n  * done\n";
	 return %fileNames;
    }

    ## otherwise, go ahead and write all the webwork roster files
    print "  * getting user lists for classes\n";

# if we have an admin user, get a password
    my $adminPw = ;
    if ( $adminUser ) {
#	print "     $adminUser password > ";
#	system("stty -echo");
#	chomp( $adminPw = <STDIN> );
	 $adminPw = $adminID;
#	print "\n                 again > ";
#	my $pwCheck = <STDIN>;
#	chomp($pwCheck);
#	while ( $adminPw ne $pwCheck ) {
#	    print "\n     passwords don't match; again: password > ";
#	    chomp( $adminPw = <STDIN> );
#	    print "\n                                      again > ";
#	    chomp( $pwCheck = <STDIN> );
#	}
#	system("stty echo");
#	print "\n";
    }

# where do we put the new files?
    my $destDir = $rosterDir;
    my $baseDir = $rosterDir;
    my $crs = ( keys %adds )[0];
    $crs =~ s/-\d{3}$//;
    $destDir =~ s/CRS/$crs/;
    $baseDir =~ s/\/CRS//;

    my $printDest = substr($destDir,-40);

    print "  * destination dir for WeBWorK roster files\n   [..$printDest] > ";
    my $dir = <STDIN>;
    chomp( $dir );
    $dir = $destDir if ( ! $dir );
    if ( $dir eq $destDir && ! -d $baseDir ) {
	 die " ** error creating base directory (exiting)\n ** $baseDir\n"
	     if ( ! mkdir $baseDir );
    }
    if ( ! -d $dir ) {
	 if ( mkdir $dir ) {
	     print "   * (created new directory)\n";
	 } else {
	     die " ** error creating directory (exiting)\n ** $dir\n";
	 }
    }

# ok, go and get all of the files for the new users
    print "  * writing files: ";
    foreach my $cs ( sort keys %adds ) {
	 print "$cs..";
	 my ( $cl, $sc ) = split(/-/, $cs);
    # set some sensible section and recitation numbers
	 my $rcn = $sc;
	 my $sxn = ( $cl =~ /21[56]/ ) ? substr($sc,0,2) . '0' : $sc;

	 my $clistName = "$cs$ext.csv";
	 $clistName =~ s/-/_/;
	 while ( ! -f $clistName && ! -f "$dataDir/$clistName" ) {
	     print "\n * cannot find course list name $clistName for " .
		 "course $cs\n";
	     print " * name (blank to exit add) > ";
	     chomp( $clistName = <STDIN> );
	     if ( ! $clistName ) {
		 print " * aborting add. *\n";
		 return( ( 'Error' => 1 ) );
	     }
	 }
	 $clistName = "$dataDir/$clistName" if ( ! -f $clistName );

    # got name; read contents and reformat appropriately
	 my @roster = `/bin/cat $clistName`;
	 @roster = modifyEntries( \@roster );

    # start off with the instructor
	 my $dataList = sprintf( $wwclFormat, $adds{$cs}->[7], $adds{$cs}->[3],
				 $adds{$cs}->[4] . " " . $adds{$cs}->[5],
				 $sxn, $rcn, $adds{$cs}->[2], $adds{$cs}->[2] );
    # add the administrator, if any, if the instructor isn't the admin user
	 $dataList .= sprintf( $wwclFormat, $adminPw, 'Administrator', 'An',
			       $sxn, $rcn, 'math-itc', $adminUser ) 
	     if ( $adminUser && $adminUser ne $adds{$cs}->[2] );

	 foreach my $stuEntry ( @roster ) {
	     my @fields = split( /,/, $stuEntry );
	     my $uniq = $fields[2];

	     my $lname = $fields[3]; $lname =~ s/\"//g;
	     my $fmname = "$fields[4] $fields[5]"; $fmname =~ s/\"//g;
	     my $umid = $fields[6];  $umid =~ s/\"//g; # fix emacs' hiliting:"

	     $dataList .= sprintf( $wwclFormat, $fields[6], $fields[3], 
				   $fields[4] . " " . $fields[5], $sxn, $rcn,
				   $fields[2], $fields[2] );
	 }
    # output data to file
	 $fileNames{ $cs } = "$dir/$cs.lst";
	 open( OF, ">$dir/$cs.lst" ) or 
	     die("\n ** error writing user list file $cs.lst (exiting)\n");
	 print OF $dataList;
	 close( OF );
    }

# all done!
    print "\n  * all files written\n";
    return %fileNames;
}

sub addAssignments {
# pre: 
# post: we prompt for a course to work with, and add assignments based
#       on the set.def files in the templates directory of a template 
#       course
    print " * add assignments to courses in the system *\n";

# get a list of defined courses
    my %classList = getClasses();
    my @classNameList = sort keys( %classList );
    print " * currently defined classes *\n";
    listCourses( \%classList );

# get the course(s) to add to
    print "  * course(s) to which to add assignments (n1,n2-n3,n4) > ";
    my $cnum = <STDIN>;
    chomp($cnum);
    my %assignmentClassList;
    my @addTo;
    if ( ! $cnum ) {
	 print " ** error: no classes specified for assignment add *\n";
	 return 0;
    } else {
	 @addTo = getList( $cnum, scalar(@classNameList) );
	 while ( ! @addTo ) {
	     print " * course(s) to which to add assignments (n1,n2-n3,n4) > ";
	     chomp( $cnum = <STDIN> );
	     @addTo = getList( $cnum, scalar(@classNameList) );
	 }
	 foreach ( @addTo ) {
	     $assignmentClassList{$classNameList[$_-1]} =
		 $classList{$classNameList[$_-1]};
	 }
    }

# get template class for assignments
    print "  * template course giving assignments\n    (enter number; " .
	 "0|-1 to exit|use existing) > ";
    my $templNum = <STDIN>;
    chomp( $templNum );
    while( $templNum !~ /^-?\d+$/ || $templNum < -1 || 
	    $templNum > @classNameList ) {
	 print "  * please enter a number (-1 - " . scalar(@classNameList) . 
	     ") > ";
	 chomp( $templNum = <STDIN> );
    }
# leave if need be
    if ( $templNum == 0 ) {
	 print " * aborting set assignment.\n";
	 return 1;
    }
# save the name of the template class
    my $templateClass;
    if ( $templNum > 0 ) {
	 $templateClass = $classNameList[ $templNum-1 ];
    } else {
	 ## if we're using existing template files, say the template
	 ##    class is the first in the list, for now
	 $templateClass = $classNameList[ $addTo[0]-1 ];
    }

# ok, we have a template class.  get a list of def files
    my @defFiles = `/bin/ls $wwHome/courses/$templateClass/templates/*.def`;
    my @assignDefFiles = ();  # sets to import and assign to everyone
    my @importDefFiles = ();  # sets to just import
    for ( my $i=0; $i<@defFiles; $i++ ) { 
	 chomp( $defFiles[$i] ); 
	 $defFiles[$i] =~ s/.*\/(set.+\.def)/$1/;
	 my ($setName) = ($defFiles[$i] =~ /set(.+)\.def/);
	 if ( isIn( $setName, @groupSets ) ) {
	     push( @importDefFiles, $defFiles[$i] );
	 } else {
	     push( @assignDefFiles, $defFiles[$i] );
	 }
    }

    if ( ! @defFiles ) {
	 print "  * found no set definition files for $templateClass " .
	     "(aborting add).\n";
	 return 0;
    } else {
	 print "  * found " . scalar( @defFiles ) . " template assignments " .
	   "(in $templateClass)\n";

	 my %assignmentData = ();
# ok, now we have to deal with possible gateway tests
	 print "  * for gateway tests: enter g/w params, or read from file ",
	     "(0|[f]) > ";
	 my $ans = <STDIN>;
	 chomp( $ans );
	 if ( $ans eq '0' ) {
	     foreach my $setFile ( @defFiles ) {
		 next if ( $setFile !~ /gateway/i && $setFile !~ /GW/ );
# we want to set: in the webwork table course_set,
#   assignment_type = 'gateway' (or 'proctored_gateway')
#   attempts_per_version = 1
#   time_interval = 0 or #
#   versions_per_interval = 0 or 2
#   version_time_limit = #
#   problem_randorder = 0 or 1
#   problems_per_page = n
		 my $setName = $setFile;
		 $setName =~ s/set?(.+)\.def/$1/;
		 print "     * for set $setName: \n";
		 print "       assignment type ([cr], [g]ateway, or " .
		     "[p]roctored_gateway) > ";
		 my $type = <STDIN>;
		 chomp( $type );
		 if ( ! $type ) {
		     $type = 'default';
		 } else {
		     $type = ( $type eq 'g' ) ? 'gateway' : 'proctored_gateway';
		 }
		 print "       time interval for new versions ([cr] for " .
		     "fake day) > ";
		 my $timeInterval = <STDIN>;
		 chomp( $timeInterval );
		 $timeInterval = 43200 if ( ! $timeInterval );
		 print "       number of tests per interval (0 for infty) > ";
		 my $numTests = <STDIN>;
		 chomp( $numTests );
		 $numTests = 0 if ( ! $numTests );
		 print "       time limit per test (in min) > ";
		 my $timeLimit = <STDIN>;
		 chomp( $timeLimit );
		 $timeLimit *= 60;
# 		print "       order problems randomly (0|1) > ";
#		my $ordering = <STDIN>;
		 my $ordering = 1;
		 chomp( $ordering );
		 print "       problems per page ([cr] = all) > ";
		 my $pppage = <STDIN>;
		 chomp( $pppage );
		 $pppage = 0 if ( ! $pppage );

		 $assignmentData{ $setFile } = { 
		     assignment_type => $type,
		     attempts_per_version => 1,
		     time_interval => $timeInterval,
		     versions_per_interval => $numTests,
		     version_time_limit => $timeLimit,
		     problem_randorder => $ordering, 
		     published => 1, 
		     problems_per_page => $pppage, };
	     }
	 }

# sanity check
	 if ( ! %assignmentClassList ) {
	     warn(" ** error: no classes found for course number $cnum\n");
	     return 0;
	 }

# now we have the set definition files, we can go through each course
# and make the assignments using our fake Instructor object
	 print " * making set assignments to courses:\n   ";
	 foreach my $csName ( sort keys %assignmentClassList ) {
	     next if ( $csName =~ /-sample/ );
	     print "$csName..";
    # make sure that the course has the required set definition files 
	     if ( $templNum > 0 && $csName ne $templateClass ) {
		 system( "/bin/cp " .
			 "$wwHome/courses/$templateClass/templates/set*.def " .
			 "$wwHome/courses/$csName/templates/" );
		 system( "/bin/chown $htuser:$htgroup " .
			 "$wwHome/courses/$csName/templates/set*.def" );
	     }
    # get the course environment for this course
	     my $csce = 
		 WeBWorK::CourseEnvironment->new( { webwork_dir => $wwHome,
						    courseName => $csName } );
    # and create an appropriate database object
	     my $db = WeBWorK::DB->new( $csce->{dbLayout} );
    # build a fake request object so that we can get an 
    #   instructor::problemsetlist object
	     my $fr = FakeRequest->new();
	     $fr->ce( $csce );
	     $fr->db( $db );
	     my $wwInstrPSL = 
		 WeBWorK::ContentGenerator::Instructor::ProblemSetList->new($fr);
    # import the sets
	     $wwInstrPSL->importSetsFromDef( , 'all', @assignDefFiles );
	     $wwInstrPSL->importSetsFromDef( , 'none', @importDefFiles );

    # then make any gateway adjustments that we need to 
	     foreach my $setFile ( @defFiles ) {
		 next if ( ! defined( $assignmentData{ $setFile } ) );
	 # find the setName
		 my ($setName) = ( $setFile =~ m|^set([.\w-]+)\.def$| );
	 # get and update the global set
		 my $set = $db->getGlobalSet( $setName );
		 foreach my $field ( %{$assignmentData{ $setFile }} ) {
		     $set->{$field} = $assignmentData{$setFile}->{$field};
		 }
		 $db->putGlobalSet( $set );
	     }
	 }
	 print "\n * done.\n";
    }
}

sub addProctors {
# pre: 
# post: we prompt for a course to work with, and add proctors from a 
#       list
    print " * add proctors to courses in the system *\n";

# get a list of defined courses
    my %classList = getClasses();
    my @classNameList = sort keys( %classList );

    my @procCrses = ();

    print " * currently defined classes *\n";
    listCourses( \%classList );

    print "  * courses to which to add proctors (give n1,n2-n3,n4)> ";
    my $procList = <STDIN>;
    chomp($procList);

    if ( ! $procList ) {
	 print " ** error: no classes specified for proctor add *\n";
	 return 0;

    } else {
	 my @procCrsList = getList($procList, scalar(@classNameList));
	 while ( ! @procCrsList ) {
	     print "  * courses to which to add proctors (give n1,n2-n3,n4)> ";
	     chomp($procList = <STDIN>);
	     @procCrsList = getList($procList, scalar(@classNameList));
	 }
	 foreach ( @procCrsList ) {
	     push( @procCrses, $classNameList[$_-1] );
	 }
    }
# now $procCrses[i] = crsName for all courses to which we add proctors

    my $printDir = substr($proctorDir,-40);
    print "  * file giving proctors (name\\t+uniq\\t+passwd)\n" .
	 "    [default in $printDir] > ";
    my $procFile = <STDIN>;
    chomp($procFile);
    $procFile = "$proctorDir/$procFile" if ( ! -f $procFile );
    while ( ! -r $procFile ) {
	 print "   * cannot read $procFile; file > ";
	 chomp($procFile = <STDIN>);
    }
    my @tmpList = `/bin/cat $procFile`;
    my @proctorList = ();
    foreach (@tmpList) {
	 push( @proctorList, $_ ) if ( /\S/ );
    }

# now @proctorList is a list of possible proctors to add; each line is
#    name\t+uniq\t+password
# or
#    name\t+uniq\t+password\t+crs,sxn[,sxn]
# find the number of proctors and course specific proctors
    my @globalProctors = ();
    my @courseSpecific = ();
    foreach ( @proctorList ) {
	 my @fields = split(/\t+/);
	 if ( @fields == 4 ) {
	     push( @courseSpecific, $_ );
	 } else {
	     push( @globalProctors, $_ );
	 }
    }

    if ( @proctorList ) {
	 print " * adding ", scalar(@proctorList), " proctors to courses: \n";
	 print " *        ", scalar(@globalProctors), " global proctors, \n";
	 print " *        ", scalar(@courseSpecific), " course proctors:\n     ";

	 foreach my $cName ( @procCrses ) {
	     print "$cName..";

# get a database object to be able to add the users
	     my $ce = WeBWorK::CourseEnvironment->new({webwork_dir => $wwHome,
						       courseName  => $cName});
	     my $db = WeBWorK::DB->new( $ce->{dbLayout} );

# get a list of existing users so that we are sure we're not adding 
# a proctor who is in a course already
	     my @userList = $db->listUsers();

	     foreach my $line ( @proctorList ) {
		 chomp($line);
		 my @fields = split( /\t+/, $line );
		 my $name   = $fields[0];
		 my $uniq   = $fields[1];
		 my $passwd = $fields[2];

		 my ( $crsnum, $sxnnum ) = ( ,  );
		 if ( @fields == 4 ) {
		     $crsnum = substr($fields[3], 0, 3);
		     $sxnnum = [ split(/,/, substr($fields[3],4)) ];
		 }

		 # if this is a course proctor, skip if we're not doing 
		 #    the correct course
		 if ( $crsnum ) {
		     my $keep = 0;
		     foreach my $s ( @{$sxnnum} ) {
			 if ( $cName =~ /ma$crsnum-$s/ ) {
			     $keep = 1;
			     last;
			 }
		     }
		     next if ( ! $keep );
		 }

		 if ( isIn($uniq, @userList) ) {
		     print " * user $uniq ($name) already exists!  skipping..\n";
		     next;
		 }

		 my ( $fname, $lname ) = ( ,  );
		 if ( $name =~ /\s/ ) {
		     ( $fname, $lname ) = ( $name =~ /(.*)\s(\S+)/ );
		 } else {
		     $lname = $name;
		 }

		 my $newUser = $db->newUser;
		 my $newPermissionLevel = $db->newPermissionLevel;
		 my $newPassword = $db->newPassword;

		 $newUser->user_id($uniq);
		 $newPermissionLevel->user_id($uniq);
		 $newPassword->user_id($uniq);
		 my $salt = 
		     join("", 
			  ('.','/','0'..'9','A'..'Z','a'..'z')[rand 64,rand 64]);
		 $newPassword->password(crypt($passwd, $salt));
		 $newUser->last_name($lname);
		 $newUser->first_name($fname);
		 $newUser->student_id($passwd);
		 $newUser->email_address("$uniq\@$mailDomain");
		 if ( $crsnum ) {
		     $newUser->section('900');	# distinguish course proctors
		 } else {			#    with section 900
		     $newUser->section('999');
		 }
		 $newUser->recitation('999');
		 $newUser->comment();
	 # 	$newUser->status($ce->status_name_to_abbrevs($ce->{default_status}));
		 $newUser->status($ce->status_name_to_abbrevs("Proctor"));
		 $newPermissionLevel->permission(3);

		 eval { $db->addUser($newUser) };
		 if ($@) {
		     print " * error adding user $uniq ($name): $@\n";
		     next;
		 } else {
		     $db->addPermissionLevel($newPermissionLevel);
		     $db->addPassword($newPassword);
		 }
	     }
	 }
	 print "\n * done.\n";

    } else {
	 print " ** error: no proctors found in file\n";
	 return 0;
    }
}

sub delProctors {
# pre: 
# post: we prompt for a course to work with, and delete proctors in those 
#       course(s)
    my $type = shift();
    my $snum = ;
    if ( $type eq 'global' ) {
	 $snum = '999';
    } else {
	 $snum = '900';
    }
    print " * delete proctors from courses in the system *\n";

# get a list of defined courses
    my %classList = getClasses();
    my @classNameList = sort keys( %classList );

    my @procCrses = ();

    print " * currently defined classes *\n";
    listCourses( \%classList );

    print "  * courses from which to del proctors (give n1,n2-n3,n4)> ";
    my $procList = <STDIN>;
    chomp($procList);

    if ( ! $procList ) {
	 print " ** error: no classes specified for proctor add *\n";
	 return 0;

    } else {
	 my @procCrsList = getList($procList, scalar(@classNameList));
	 while ( ! @procCrsList ) {
	     print "  * courses to which to del proctors (give n1,n2-n3,n4)> ";
	     chomp($procList = <STDIN>);
	     @procCrsList = getList($procList, scalar(@classNameList));
	 }
	 foreach ( @procCrsList ) {
	     push( @procCrses, $classNameList[$_-1] );
	 }
    }
# now $procCrses[i] = crsName for all courses to which we add proctors
    my $crses = join(',', sort(@procCrses));

# get list of proctors from first course and make sure that we should
# proceed with delete
    my $cName = $procCrses[0];
    my $ce = WeBWorK::CourseEnvironment->new({webwork_dir => $wwHome,
					       courseName  => $cName});
    my $db = WeBWorK::DB->new( $ce->{dbLayout} );

    my @userIDList = $db->listUsers();
    my @procUsers = grep {$_->section() eq $snum} $db->getUsers( @userIDList );

    print " * found ", scalar(@procUsers), " ($type) proctors in $cName\n";
    print " * ready to delete these proctors from courses $crses.  " .
	 "continue? ([n]|y) > ";
    my $ans = <STDIN>;
    chomp($ans);
    if ( $ans !~ /^y$/i ) {
	 print " ** ok.  exiting delete.\n";
	 return 0;
    } else {
	 print " * deleting proctors from $cName..";
	 foreach ( @procUsers ) {
	     $db->deleteUser( $_->user_id() );
	 }
	 foreach $cName ( @procCrses ) {
	     next if $cName eq $procCrses[0];
	     print "$cName.. ";
	     $ce = WeBWorK::CourseEnvironment->new({webwork_dir => $wwHome,
						    courseName  => $cName});
	     $db = WeBWorK::DB->new( $ce->{dbLayout} );
	     my @userIDList = $db->listUsers();
	     my @procUsers = grep {$_->section() eq $snum} 
		 $db->getUsers( @userIDList );
	     foreach ( @procUsers ) {
		 $db->deleteUser( $_->user_id() );
	     }
	 }
	 print "\n * done.\n";
    }
}

sub updateRosters {
# pre:
# post: we update the rosters of the requested courses based on the 
#       roster data in $dataDir

    print " * update rosters for courses in the system *\n";

# get list of courses to update
    my %classList = getClasses();
    my @classNameList = sort keys( %classList );
    my @updateCrses = ();

    print " * currently defined classes *\n";
    listCourses( \%classList );
    print "  * courses to update (n1,n2-n3,n4) > ";
    my $updList = <STDIN>;
    chomp($updList);

    if ( ! $updList ) {
	 print " ** error: no classes specified *\n";
	 return 0;
    } else {

	 my @updateIndices = getList( $updList, scalar(@classNameList) );
	 while ( ! @updateIndices ) {
	     print "  * courses to update (give n1,n2-n3,n4) > ";
	     chomp( $updList = <STDIN> );
	     @updateIndices = getList( $updList, scalar(@classNameList) );
	 }
	 foreach ( @updateIndices ) {
	     push( @updateCrses, $classNameList[$_-1] );
	 }
    }

# ok, now we have a list of course names; read in the current and old rosters
    print " * reading data for course rosters.. \n   ";
# oldRosters are read from the WeBWorK courses
#   oldRosters{uniq} = [ crsName, crs, sxn, umid, last, first ]
# newRosters are read from the data directory
#   newRosters{uniq} = [ crsName, crs, sxn, umid, last, first ]
# and then we have lists of students who are in multiple rosters
#   newMultipleRosters{uniq} = [ list of crsNames ] 
#   oldMultipleRosters{uniq} = [ list of crsNames ]
# and lists of students by courses
#   newCourseLists{crsName} = [ list of uniqs ];
#   oldCourseLists{crsName} = [ list of uniqs ];
# to be able to add sets to new users, we also assemble
#   setNames{crsName} = [ list of set names ];
# and, finally, watch for dropped students, too
#   oldDroppedStu{crsName} = [ list of uniqs ];

    my %oldRosters = ();
    my %newRosters = ();
    my %oldMultipleRosters = ();
    my %newCourseLists = ();
    my %oldCourseLists = ();
    my %newMultipleRosters = ();
    my %setNames = ();
    my %oldDroppedStu = ();

    my @skipClassNames = ();

# people we don't move or alter: adminUsers = ( list of uniqs )
    my @adminUsers = ();

    foreach my $crsName ( @updateCrses ) {
	 my $fileExt = ;

	 my ( $crs, $sxn ) = ( $crsName =~ /(\d{3})-(\d{3})/ );
	 print "$crs-$sxn..";
	 if ( ! defined($crs) || ! defined($sxn) ) {
	     print " ** error getting course and section number from " .
		 "$crsName; skipping\n";
	     push( @skipClassNames, $crsName );
	     next;
	 }

	 ## check for a campus extension to the course name
	 my $ii = 0;
	 foreach my $campExt ( @courseCampusExt ) {
	     if ( $crsName =~ /${crs}-${sxn}($campExt)/ ) {
		 $fileExt = $fileCampusExt[$ii];
		 last;
	     }
	     $ii++;
	 }

	 if ( ! -r "$dataDir/${crs}_${sxn}${fileExt}.csv" ) {
	     print " ** error reading course-section file for $crsName; " .
		 "skipping\n";
	     push( @skipClassNames, $crsName );
	     next;
	 }

	 $newCourseLists{$crsName} = [ ];

# note roster files have the format
# crs,sxn,"uniq","lname","fmnames","uniq"
# 116,023,"dbegun","Begun","Dana Lynne","15293340"
#  0   1     2        3        4             5

	 my @rosterLines = `/bin/cat $dataDir/${crs}_${sxn}${fileExt}.csv`;
	 if ( @rosterLines ) {
	     foreach ( @rosterLines ) {
		 chomp();
		 my @fields = csvSplit( $_ );

		 if ( defined( $newRosters{$fields[2]} ) || 
		      defined( $newMultipleRosters{$fields[2]} ) ) {
		     if ( defined( $newMultipleRosters{$fields[2]} ) ) {
			 push( @{$newMultipleRosters{$fields[2]}}, $crsName );
		     } else {
			 my $ocrsName = $newRosters{$fields[2]}->[0];
			 $newMultipleRosters{$fields[2]} = [$ocrsName, $crsName];
		     }
		 } else {
		     $newRosters{$fields[2]} = [ $crsName, $crs, $sxn, 
						 $fields[5], $fields[3], 
						 $fields[4] ];
		     push( @{$newCourseLists{$crsName}}, $fields[2] );
		 }
	     }
	 } else {
	     print " ** found no data for ${crs}-$sxn ($crsName); skipping\n";
	     push( @skipClassNames, $crsName );
	     next;
	 }
    }

    print "done\n * reading roster data from webwork courses..\n   ";
    foreach my $crsName ( @updateCrses ) {
	 my ( $crs, $sxn ) = ( $crsName =~ /(\d{3})-(\d{3})/ );
	 print "$crs-$sxn..";

	 $oldDroppedStu{$crsName} = [ ];

	 my $ce = WeBWorK::CourseEnvironment->new({webwork_dir => $wwHome,
						   courseName  => $crsName});
	 my $db = WeBWorK::DB->new( $ce->{dbLayout} );

	 my @userIDList = $db->listUsers();
    # exclude proctor users
	 my @users = grep {$_->section() ne '999'} $db->getUsers(@userIDList);

	 $oldCourseLists{$crsName} = [ ];
	 foreach ( @users ) {
	     if ( $_->status() eq 'D' ) {
		 push( @{$oldDroppedStu{$crsName}}, $_->user_id() );

	     } else {

		 my $userPermLvl = $db->getPermissionLevel( $_->user_id() );

		 if ( $userPermLvl->permission() > 0 ) {
		     push( @adminUsers, $_->user_id() );
		     next;
		 } else {
		     if ( defined($oldRosters{$_->user_id()}) ) {
			 if ( defined($oldMultipleRosters{$_->user_id()}) ) {
			     push( @{$oldMultipleRosters{$_->user_id()}}, 
				   $crsName );
			 } else {
			     my $ocrsName = $oldRosters{$_->user_id()}->[0];
			     $oldMultipleRosters{$_->user_id()} = [ $ocrsName,
								    $crsName ];
			 }
		     } else {
			 $oldRosters{$_->user_id()} = [ $crsName, $crs, $sxn, 
							$_->student_id(), 
							$_->last_name(),
							$_->first_name() ];
			 push( @{$oldCourseLists{$crsName}}, $_->user_id() );
		     }
		 }
	     }
	 }

    # also get a list of the sets for this course
	 my @userSets = ();
	 my @globalSets = $db->listGlobalSets();
	 foreach my $setID ( @globalSets ) {
	     push( @userSets, $setID ) if ( $db->countSetUsers($setID) );
	 }
	 $setNames{$crsName} = [ @userSets ];
    }

# all done; do update
# $adds[i] (, dels) = [ crs, sxn, uniq, umid, lname, fname ]
    my @adds = ();   # spiffy new students
    my @dels = ();   # dropped students
    my @reups = ();  # students who had status 'D' and were upgraded to 'C'
# chgs[i] = [ ocrs->ncrs, osxn->nsxn, uniq,  umid, lname, fname ]
    my @chgs = ();
# $skps[i] = [ crs, sxn, uniq ]
    my @skps = ();

    print "done\n * doing update..\n   ";

### update loop: loop through each course we're updating
    foreach my $crsName ( @updateCrses ) {
	 if ( isIn( $crsName, @skipClassNames ) ) {
	     print "[$crsName skipped]..";
	     next;
	 }
	 my ( $crs, $sxn ) = ( $crsName =~ /(\d{3})-(\d{3})/ );
	 print "$crs-$sxn..";

    # keep a list of adds, who need to have sets assigned in this course
	 my @usersSetAssign = ();

	 my $ce = WeBWorK::CourseEnvironment->new({webwork_dir => $wwHome,
						   courseName  => $crsName});
	 my $db = WeBWorK::DB->new( $ce->{dbLayout} );

    ### inner update loop: loop through each student in the new course roster
	 foreach my $uniq ( @{$newCourseLists{$crsName}} ) {

	     next if ( isIn( $uniq, @adminUsers ) ||
		       defined( $newMultipleRosters{$uniq} ) );

    # keep track of what's going on with old course enrollments: in 
    #   particular, get a list of the sections in each course that 
    #   the student is enrolled in.  (in the following we actually 
    #   only use the fact that a student is or is not enrolled in a 
    #   section of the current course, not the list of section numbers.)
	     my %oldSectionNum = ();
	     if ( defined( $oldRosters{$uniq} ) ) { 
		 if ( defined( $oldMultipleRosters{$uniq} ) ) {
		     foreach my $oldCrsName ( @{$oldMultipleRosters{$uniq}} ) {
			 my ( $oldCrs, $oldSxn ) = 
			     ( $oldCrsName =~ /(\d{3})-(\d{3})/ );
			 if ( defined( $oldSectionNum{$oldCrs} ) ) {
			     push( @{$oldSectionNum{$oldCrs}}, $oldSxn );
			 } else {
			     $oldSectionNum{$oldCrs} = [ $oldSxn ];
			 }
		     }
		 } else {
		     $oldSectionNum{$oldRosters{$uniq}->[1]} = 
			 [ $oldRosters{$uniq}->[2] ];
		 }
	     }

    # first, anyone who is in the new roster and wasn't in the class 
    #   before needs to be added
	     if ( ( ! defined( $oldRosters{$uniq} ) ||
		    ! defined( $oldSectionNum{$crs} ) ) &&
		  ! isIn( $uniq, @{$oldDroppedStu{$crsName}} ) ) {
		 my ( $cn, $c, $s, $umid, $lname, $fname ) =
		     @{$newRosters{$uniq}};

		 my $newUser = $db->newUser;
		 my $newPermissionLevel = $db->newPermissionLevel;
		 my $newPassword = $db->newPassword;

		 $newUser->user_id( $uniq );
		 $newPermissionLevel->user_id($uniq);
		 $newPassword->user_id($uniq);
		 my $salt = 
		     join("", 
			  ('.','/','0'..'9','A'..'Z','a'..'z')[rand 64,rand 64]);
		 $newPassword->password(crypt($umid, $salt));
		 $newUser->last_name($lname);
		 $newUser->first_name($fname);
		 $newUser->student_id($umid);
		 $newUser->email_address("$uniq\@$mailDomain");
		 $newUser->section($sxn);
		 $newUser->recitation($sxn);
		 $newUser->comment();
		 $newUser->status($ce->status_name_to_abbrevs($ce->{default_status}));
		 $newPermissionLevel->permission(0);

		 eval( $db->addUser( $newUser ) );
#		print "  * addUser ($uniq, $umid, $lname, $fname)\n";
		 if ( $@ ){
#		if ( 0 ) {
		     print " * error adding user $uniq ($fname $lname) " . 
			 "to $crs-$sxn: $@\n";
		     next;
		 } else {
		     $db->addPermissionLevel($newPermissionLevel);
		     $db->addPassword($newPassword);
#		    print "    addPermissions($uniq, 0)\n";
#		    print "    addPassword($uniq, " . $newPassword->password . ")\n";
		     push( @adds, [ $crs, $sxn, $uniq, $umid, $lname, $fname ]);
		 }

	 # also store the student to assign sets to them at the end of 
	 #   the course loop
		 push( @usersSetAssign, $uniq );

    # next catch anyone who is in the old roster, but has a status of 'D': 
    #   we just reset them to 'C'; we don't try and catch their set data 
    #   if they were surfing between multiple sections...
	     } elsif ( isIn( $uniq, @{$oldDroppedStu{$crsName}} ) ) {
		 my $user = $db->getUser( $uniq );
		 $user->status( 'C' );
		 $db->putUser( $user );
		 push( @reups, [ $crs, $sxn, $uniq, $user->student_id(),
				 $user->last_name(), $user->first_name() ] );

    # next, anyone who is in both one new and one old roster, and is in the 
    #   same course but not in the new section, needs to be swapped between
    #   the sections.  if they already exist in this section (e.g., b/c 
    #   they are enrolled in multiple sections), we don't tamper with their
    #   data and just drop them from the old sections
	     } elsif ( defined( $oldRosters{$uniq} ) &&
		       ! defined( $oldMultipleRosters{$uniq} ) && 
		       $oldRosters{$uniq}->[1] eq $crs &&
		       $oldRosters{$uniq}->[2] ne $sxn ) {

	 # first, let's bring up a new course environment and db for the
	 #   student's old course 
		 my $oCrsName = $oldRosters{$uniq}->[0];
		 my $oCrs = $oldRosters{$uniq}->[1];
		 my $oSxn = $oldRosters{$uniq}->[2];
		 my $oce = 
		     WeBWorK::CourseEnvironment->new({webwork_dir => $wwHome,
						      courseName  => $oCrsName});
		 my $odb = WeBWorK::DB->new( $oce->{dbLayout} );

	 # the old student user information is then
		 my $oldUser = $odb->getUser( $uniq );
		 $oldUser->status('C');
		 $oldUser->section( $sxn );
		 $oldUser->recitation( $sxn );
		 my $oldPerm = $odb->getPermissionLevel( $uniq );
		 my $oldPass = $odb->getPassword( $uniq );
	 # save this in the new course.  
		 eval( $db->addUser( $oldUser ) );
		 if ( $@ ) {
		     print " * error moving user $uniq from $oCrs-$oSxn " .
			 "to $crs-$sxn: $@\n";
		     next;
		 } else {
		     $db->addPermissionLevel( $oldPerm );
		     $db->addPassword( $oldPass );

	 # for now, we don't try and move scores
		     if ( 0 ) {

	 # then, we see what we can do with scores...
	 #   get a list of all of the sets from the old course and add them
	 #   to the new one
			 my @oldSetIDs = $odb->listUserSets( $uniq );
			 my @oldSetList = ();
			 foreach ( @oldSetIDs ) { 
			     push( @oldSetList, [ $uniq, $_ ] );
			 }
			 my @oldUserSets = $odb->getUserSets( @oldSetList );
			 foreach ( @oldUserSets ) { 
			     eval( $db->addUserSet( $_ ) ); 
			     if ( $@ ) {
				 print " * error adding set ", $_->set_id(), 
				     " to user ", $uniq, ": $@\n";
				 next;
			     }
			 }
	 #   we also want all versioned sets
			 my @oldVSetIDs = $odb->listUserSetVersions( $uniq );
			 my @oldVSetList = ();
			 foreach ( @oldVSetIDs ) { 
			     push( @oldVSetList, [ $uniq, $_ ] ); 
			 }
			 my @oldVUserSets = $odb->getUserSets( @oldVSetList );
			 foreach ( @oldVUserSets ) { 
			     $db->addVersionedUserSet( $_ ); 
			 }

	     # also get all of the problem data for these
			 foreach my $setID ( @oldSetIDs, @oldVSetIDs ) {
			     my @oldProblems = 
				 $db->getAllUserProblems($uniq,$setID);
			     foreach ( @oldProblems ) {
				 eval( $db->putUserProblem( $_ ) );
				 if ( $@ ) {
				     print " * error adding problems, from ", 
					 "prob ", $_->problem_id(), 
					 " to set $setID for ",
					 "user $uniq: $@\n";
				     last;
				 }
			     }
			 }
		     } else {
	 # we don't move the user data, just give them all a new set of hw
			 push( @usersSetAssign, $uniq );
		     }		

		     push( @chgs, [ $oldRosters{$uniq}->[1] . "->"  .
				    $newRosters{$uniq}->[1], 
				    $oldRosters{$uniq}->[2] . "->"  .
				    $newRosters{$uniq}->[2], $uniq, 
				    @{$newRosters{$uniq}}[3..5] ] );
		 }
	     }
	 }
	 ### end inner update loop: foreach $uniq in @{$newCourseLists{$crsName}}

# make sure that anyone who is in multiple old rosters is indicated as dropped
# in this course section
	 foreach my $dupUniq ( keys %oldMultipleRosters ) {
	     foreach my $dupCrsName ( @{$oldMultipleRosters{$dupUniq}} ) {
		 if ( $crsName eq $dupCrsName && 
		      ! isIn( $dupUniq, @{$newCourseLists{$crsName}} ) ) {
	     # we know that the user is (also) in this course, or else we
	     #    wouldn't have added the course to $oldMultipleRosters{uniq}
		     my $dupUser = $db->getUser( $dupUniq ); 
		     $dupUser->status('D');
		     $db->putUser( $dupUser );
#		    print "  * (dup) putUser($dupUniq, " . $dupUser->status . ")\n";
		     push( @dels, [ $crs, $sxn, $dupUniq, 
				    $dupUser->student_id(),
				    $dupUser->last_name(), 
				    $dupUser->first_name() ] );
		 } elsif ( $crsName eq $dupCrsName ) {
	     # store skips with the course-section they are actually in
		     push( @skps, [ $crs, $sxn, $dupUniq ] );
		 }
	     }
	 }

# finally, anyone who is in the old roster but not the new needs to be dropped
# we're a little careful here, and don't drop anyone who has better than 
# student privileges
	 foreach my $uniq ( @{$oldCourseLists{$crsName}} ) {
	     if ( ! isIn( $uniq, @{$newCourseLists{$crsName}} ) &&
		  ! defined( $oldMultipleRosters{$uniq} ) ) {

		 my $userPermLvl = $db->getPermissionLevel($uniq);
		 next if ( $userPermLvl->permission > 0 );
		 my $delUser = $db->getUser( $uniq );
		 $delUser->status( 'D' );
		 $db->putUser( $delUser );
#		print "  * putUser($uniq, " . $delUser->status . ")\n";
		 push( @dels, [ $crs, $sxn, $uniq, $delUser->student_id(),
				$delUser->last_name(), 
				$delUser->first_name() ] );
	     }
	 } # end of loop through uniqs in the old course rosters

# make set assignments to all new users
	 if ( @usersSetAssign ) {
	     my $fr = new FakeRequest();
	     $fr->db( $db );
	     $fr->ce( $ce );
	     my $instrCG = WeBWorK::ContentGenerator::Instructor->new($fr);
	     $instrCG->assignSetsToUsers( $setNames{$crsName}, 
					  [@usersSetAssign] );
	 }
    } 
### end of update loop: foreach $crsName in ( @updateCrses ) loop

# print a summary of results
    print "done\n";
    print "  * added students: \n" if ( @adds );
    foreach ( sort { $a->[0].$a->[1].$a->[4].$a->[5] cmp 
		      $b->[0].$b->[1].$b->[4].$b->[5] } @adds ) {
	 print "    $_->[0]-$_->[1] : $_->[2] ($_->[5] $_->[4])\n";
#	print "\n  [ " . join(', ', @$_) . " ]";
    } 
    print "  * reenrolled students: \n" if ( @reups );
    foreach ( sort { $a->[0].$a->[1].$a->[4].$a->[5] cmp 
		      $b->[0].$b->[1].$b->[4].$b->[5] } @reups ) {
	 print "    $_->[0]-$_->[1] : $_->[2] ($_->[5] $_->[4])\n";
    }
# weed out of the dels students who were moved 
    my @moved = map { $_->[2] } @chgs;
    my @reallyDels = ();
    foreach ( @dels ) {push( @reallyDels, $_ ) if ( ! isIn($_->[2],@moved) );}
    print "\n  * dropped students: \n" if ( @reallyDels );
    foreach ( sort { $a->[0].$a->[1].$a->[4].$a->[5] cmp 
		      $b->[0].$b->[1].$b->[4].$b->[5] } @reallyDels ) {
	 print "    $_->[0]-$_->[1] : $_->[2] ($_->[5] $_->[4])\n";
#	print "\n  [ " . join(', ', @$_) . " ]";
    } 
    print "\n  * moved students: \n" if ( @chgs );
#     foreach ( sort { $a->[4] cmp $b->[4] } @chgs ) {
    foreach ( sort { $a->[0].$a->[1].$a->[4].$a->[5] cmp 
		      $b->[0].$b->[1].$b->[4].$b->[5] } @chgs ) {
	 my $on = $_->[0] . "," . $_->[1];
	 $on =~ s/(\d{3})->(\d{3}),(\d{3})->(\d{3})/$1-$3=>$2-$4/;
#	print "$_->[4] ($on), ";
	 print "    $on : $_->[2] ($_->[5] $_->[4])\n";
    }
    print "\n  * students in multiple old sections: " if ( @skps );
    foreach ( sort { $a->[2] cmp $b->[2] } @skps ) {
	 my $ocrsList = ;
	 foreach my $cn ( @{$oldMultipleRosters{$_->[2]}} ) {
	     my ( $c, $s ) = ( $cn =~ /(\d{3})-(\d{3})/ );
	     $ocrsList .= "$c-$s,";
	 }
	 $ocrsList =~ s/,$//;
	 print "$_->[2] ([n] $_->[0]-$_->[1]; [o] $ocrsList), ";
    }
    print "\n  * students in multiple new sections (skipped): " 
	 if ( %newMultipleRosters ); 
    foreach ( sort { $a cmp $b } keys( %newMultipleRosters ) ) {
	 my $ncrsList = ;
	 foreach my $cn ( @{$newMultipleRosters{$_}} ) {
	     my ( $c, $s ) = ( $cn =~ /(\d{3})-(\d{3})/ );
	     $ncrsList .= "$c-$s,";
	 }
	 $ncrsList =~ s/,$//;
	 print "$_ ($ncrsList), ";
    }
    print "\n" if ( @adds || @dels || @chgs || @reups || %newMultipleRosters );
    print " * done.\n";
}

sub csvSplit {
    my $line = shift();

    chomp($line);  # be safe...

    my @fields = ();
    while ( $line ) {
	 my $term = ;
	 if ( $line =~ /^"/ ) { #"
	     $line = substr( $line, 1 );     # bite off quote
	     my $ind = index( $line, '"' );  # "
	     $term = substr( $line, 0, $ind );
	     $line = ( $term =~ "$line," ) ?  : substr( $line, $ind+1 );
     # get rid of any trailing comma
	     $line =~ s/^,//;

	 } else {
	     my $ind = index( $line, ',' );
	     if ( $ind > 0 ) {
		 $term = substr( $line, 0, $ind );
		 $line = substr( $line, $ind );
		 $line =~ s/^,//;
	     } else {
		 $term = $line;
		 $line = ;
	     }
	 }
	 $term =~ s/\s*(.*\S)\s*/$1/;  # get rid of white space
	 push( @fields, $term );
    }
    return @fields;
}

sub isIn {
    my $v = shift();
    foreach ( @_ ) { return 1 if ( $v eq $_ ); }
    return 0;
}

sub getList {
    my ($str, $top) = @_;
    my @items = split(/,\s*/, $str);
    my @list = ();
    foreach ( @items ) {
	 if ( $_ !~ /(\d+)|(\d+-\d+)/ ) {
	     print "  error in specified list!\n";
	 } elsif ( /-/ ) {
	     my ($min,$max) = split(/-/,$_);
	     if ( $min > $max || $min < 1 || $max > $top ) {
		 print "  class number out of range!\n";
		 @list = ();
		 last;
	     } else {
		 for ( my $i=$min; $i<=$max; $i++ ) {
		     push(@list, $i);
		 }
	     }
	 } else {
	     if ( $_ < 0 || $_ > $top ) {
		 print "  class number out of range!\n";
		 @list = ();
		 last;
	     } else {
		 if ( @list && $_ == 0 ) {
		     print "  class number of zero is out of range!\n";
		     @list = ();
		     last;
		 } else {
		     push(@list, $_);
		 }
	     }
	 }
    }
    return @list;
}

sub cryptPass($) {
    my ($clearPassword) = @_;
    my $salt = join("", ('.','/','0'..'9','A'..'Z','a'..'z')[rand 64, rand 64]);
    my $cryptPassword = crypt($clearPassword, $salt);
    return $cryptPassword;
}

sub hangIndent {
    my ( $hang, $width, $shorten, $text ) = @_;
# pre:  $hang and $width are numbers, $hang < $width; $text is a string
#       if $shorten, the first line is shortened by $shorten
# post: $text is reformatted to have maximum width $width and a hanging
#       indent of $hang each line after the first; the reformatted text
#       is returned
    my $htext = ;
    my $line = ;
    my $indent = ($shorten ? $shorten : 0);
    my $ldr = ' 'x$hang;

    if ( $indent + length($text) < $width ) {
	 $htext = " $text";
    } else {
	 foreach ( split(/\s+/, $text ) ) {
	     if ( $indent + length($line) + length($_) >= ($width-1) ) {
		 $htext .= $line . "\n$ldr";
		 $line = $_;
		 $indent = $hang;
	     } else {
		 $line .= " $_";
	     }
	 }
	 $htext .= $line if ( $line );
    }
    $htext =~ s/\n$ldr$//;
    return $htext;
}

#-------------------------------------------------------------------------------
# fake WeBWorK packages that we don't want to build en masse in order to 
# get access to the importSetFromDef routine in ProblemSetList.pm
#

package FakeRequest;
sub new {
    my $class = shift();
    my $authz = new FakeAuthz;
    return( bless( { ce => , db => , authz => $authz }, $class ) );
}
sub ce {
    my $self = shift();
    $self->{ce} = shift() if ( @_ );
    return $self->{ce};
}
sub db {
    my $self = shift();
    $self->{db} = shift() if ( @_ );
    return $self->{db};
}
sub authz {
    my $self = shift();
    $self->{authz} = shift() if ( @_ );
    return $self->{authz};
}
1;

package FakeAuthz;
sub new { 
    my $class = shift();
    return( bless( { }, $class ) );
}
sub hasPermissions {
    return 1;
}
1;

# end of script
#-------------------------------------------------------------------------------