Annotation of loncom/enrollment/Enrollment.pm, revision 1.7
1.7 ! albertel 1: # Automated Enrollment manager
! 2: # $Id: gplheader.pl,v 1.1 2001/11/29 18:19:27 www Exp $
! 3: #
! 4: # Copyright Michigan State University Board of Trustees
! 5: #
! 6: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
! 7: #
! 8: # LON-CAPA is free software; you can redistribute it and/or modify
! 9: # it under the terms of the GNU General Public License as published by
! 10: # the Free Software Foundation; either version 2 of the License, or
! 11: # (at your option) any later version.
! 12: #
! 13: # LON-CAPA is distributed in the hope that it will be useful,
! 14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
! 15: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! 16: # GNU General Public License for more details.
! 17: #
! 18: # You should have received a copy of the GNU General Public License
! 19: # along with LON-CAPA; if not, write to the Free Software
! 20: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
! 21: #
! 22: # /home/httpd/html/adm/gpl.txt
! 23: #
! 24: # http://www.lon-capa.org/
! 25: #
1.1 raeburn 26: package LONCAPA::Enrollment;
27:
28: use Apache::loncoursedata;
29: use Apache::lonnet;
30: use HTML::Entities;
31: use LONCAPA::Configuration;
32:
33: use strict;
34:
35: sub update_LC {
36: my ($dom,$crs,$adds,$drops,$startdate,$enddate,$authtype,$autharg,$classesref,$groupref,$logmsg,$context) = @_;
37: # Get current LON-CAPA student enrollment for this class
38: my $configvars = &LONCAPA::Configuration::read_conf('loncapa.conf');
39: my $cid = $dom."_".$crs;
40: my $roster = &Apache::loncoursedata::get_classlist($cid,$dom,$crs);
41: my $cend = &Apache::loncoursedata::CL_END;
42: my $cstart = &Apache::loncoursedata::CL_START;
43: my $stuid=&Apache::loncoursedata::CL_ID;
44: my $sec=&Apache::loncoursedata::CL_SECTION;
45: my $status=&Apache::loncoursedata::CL_STATUS;
46: my $type=&Apache::loncoursedata::CL_TYPE;
47: my @localstudents = ();
48: my $currlist;
49: foreach my $uname (keys %{$roster} ) {
50: if ($uname =~ m/^(.+):$dom$/) {
51: if ($$roster{$uname}[$status] eq "Active") {
52: push @localstudents, $1;
53: @{$$currlist{$1}} = @{$$roster{$uname}};
54: }
55: }
56: }
57: my $linefeed = '';
58: my $addresult = '';
59: my $dropresult = '';
60: if ($context eq "updatenow") {
61: $linefeed = "</li>\n<li>";
62: } elsif ($context eq "automated") {
63: $linefeed = "\n";
64: }
65: my $enrollcount = 0;
66: my $dropcount = 0;
67:
68: # Get mapping of IDs to usernames for current LON-CAPA student enrollment for this class
69: my @LCids = ();
70: my %unameFromLCid = ();
71: foreach my $uname (sort keys %{$currlist}) {
72: my $stuID = $$currlist{$uname}[$stuid];
73: if (!grep/^$stuID$/,@LCids) {
74: push @LCids, $stuID;
75: @{$unameFromLCid{$stuID}} = ();
76: }
77: push @{$unameFromLCid{$stuID}},$uname;
78: }
79:
80: # Get latest institutional enrollment for this class.
81: my %allenrolled = ();
82: my @reg_students = ();
83: my %place = ();
84: $place{'autharg'} = &CL_autharg();
85: $place{'authtype'} = &CL_authtype();
86: $place{'email'} = &CL_email();
87: $place{'enddate'} = &CL_enddate();
88: $place{'firstname'} = &CL_firstname();
89: $place{'generation'} = &CL_generation();
90: $place{'groupID'} = &CL_groupID();
91: $place{'lastname'} = &CL_lastname();
92: $place{'middlename'} = &CL_middlename();
93: $place{'startdate'} = &CL_startdate();
94: $place{'studentID'} = &CL_studentID();
95: my %ucount = ();
96: my %enrollinfo = ();
97: foreach my $class (@{$classesref}) {
98: my %enrolled = ();
99: &parse_classlist($$configvars{'lonDaemons'},$dom,$crs,$class,\%place,$$groupref{$class},\%enrolled);
100: foreach my $uname (sort keys %enrolled ) {
101: if (!grep/^$uname$/,@reg_students) {
102: push @reg_students,$uname;
103: $ucount{$uname} = 0;
104: @{$allenrolled{$uname}} = ();
105: }
106: @{$allenrolled{$uname}[$ucount{$uname}]} = @{$enrolled{$uname}};
107: $ucount{$uname} ++;
108: }
109: }
110:
111: # Check for multiple sections for a single student
112: my @okusers = ();
113: foreach my $uname (@reg_students) {
114: if (@{$allenrolled{$uname}} > 1) {
115: my @sections = ();
116: my $saved;
117: for (my $i=0; $i<@{$allenrolled{$uname}}; $i++) {
118: my @stuinfo = @{$allenrolled{$uname}[$i]};
119: my $secnum = $stuinfo[ $place{'groupID'} ];
120: unless ($secnum eq '') {
121: unless (grep/^$secnum$/,@sections) {
122: $saved = $i;
123: push @sections,$secnum;
124: }
125: }
126: }
127: if (@sections == 0) {
128: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[0]};
129: push @okusers, $uname;
130: }
131: elsif (@sections == 1) {
132: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[$saved]};
133: push @okusers, $uname;
134: }
135: elsif (@sections > 1) {
1.5 raeburn 136: $$logmsg = "$uname appears in classlists for the more than one section of this course, i.e. in sections: ";
1.1 raeburn 137: foreach (@sections) {
1.5 raeburn 138: $$logmsg .= " $_,";
1.1 raeburn 139: }
1.5 raeburn 140: chop($$logmsg);
1.6 raeburn 141: $$logmsg .= ". Because of this ambiguity, no enrollment action was taken for this student.".$linefeed;
1.1 raeburn 142: }
143: } else {
144: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[0]};
145: push @okusers, $uname;
146: }
147: }
148: # Get mapping of student IDs to usernames for users in institutional data for this class
149: my @allINids = ();
1.3 raeburn 150: my %unameFromINid = ();
1.1 raeburn 151: foreach my $uname (@okusers) {
152: $enrollinfo{$uname}[ $place{'studentID'} ] =~ tr/A-Z/a-z/;
153: my $stuID = $enrollinfo{$uname}[ $place{'studentID'} ];
154: if (grep/^$stuID$/,@allINids) {
155: push @{$unameFromINid{$stuID}},$uname;
156: } else {
157: push @allINids, $stuID;
158: @{$unameFromINid{$stuID}} = $uname;
159: }
160: }
1.5 raeburn 161: # Explicitly allow access to creation/modification of students if called as an automated process.
162: if ($context eq 'automated') {
163: $ENV{'allowed.cst'}='F';
164: }
165:
1.1 raeburn 166: # Compare IDs with existing LON-CAPA enrollment for this class
167: foreach my $uname (@okusers) {
1.5 raeburn 168: unless ($uname eq '') {
169: my %uidhash=&Apache::lonnet::idrget($dom,$uname);
170: my @stuinfo = @{$enrollinfo{$uname}};
171: if (grep/^$uname$/,@localstudents) {
1.1 raeburn 172: # Check for studentID changes
1.5 raeburn 173: if ( ($uidhash{$uname}) && ($uidhash{$uname} !~ /error\:/) ) {
174: unless ( ($uidhash{$uname}) eq ($stuinfo[ $place{studentID} ]) ) {
1.6 raeburn 175: $$logmsg .= "Change in ID for $uname. StudentID in LON-CAPA system is $uidhash{$uname}; StudentID in institutional data is $stuinfo[ $place{studentID} ]".$linefeed;
1.5 raeburn 176: }
1.1 raeburn 177: }
178:
179: # Check for section changes
1.5 raeburn 180: unless ($$currlist{$uname}[$sec] eq $stuinfo[ $place{groupID} ]) {
181: if ( ($$currlist{$uname}[$type] eq "auto") && ($adds == 1) ) {
182: my $modify_section_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$$currlist{$uname}[$cend],$$currlist{$uname}[$cstart],'auto',$cid);
183: if ($modify_section_result =~ /^ok/) {
1.6 raeburn 184: $$logmsg .= "Section for $uname switched from old section: ".$$currlist{$uname}[$sec] ." to new section: ".$stuinfo[ $place{groupID} ].".".$linefeed;
1.5 raeburn 185: } else {
186: $$logmsg .= "Error when attempting section change for $uname from old section ".$$currlist{$uname}[$sec]." to new section: ".$stuinfo[ $place{groupID} ]." -error: $modify_section_result".$linefeed;
187: }
1.1 raeburn 188: }
189: }
1.5 raeburn 190: } else {
1.1 raeburn 191: # Check for changed usernames by checking studentIDs
1.5 raeburn 192: if ( ($stuinfo[ $place{studentID} ] ne '') && (grep/^$stuinfo[ $place{studentID} ]$/,@LCids) ) {
193: if (grep/^$$currlist{$uname}[ $place{'studentID'} ]$/,@allINids) {
194: foreach my $match ( @{ $unameFromLCid{ $stuinfo[ $place{studentID} ] } } ) {
195: if (grep/^$match$/,@okusers) {
1.6 raeburn 196: $$logmsg .= "A possible change in username has been detected for a student enrolled in this course. The existing LON-CAPA classlist contains user: $uname and student ID: ".$$currlist{$uname}[ $place{studentID} ].". This username has been dropped from the institutional classlist, but the same student ID is used for user: $match who still appears in the institutional classlist. You may need to contact your Domain Coordinator to request a move of the student data files for user: $uname to $match".$linefeed;
1.5 raeburn 197: }
1.1 raeburn 198: }
199: }
1.5 raeburn 200: } elsif ($adds == 1) {
1.1 raeburn 201: # Add student to LON-CAPA classlist
1.5 raeburn 202: my $auth = $stuinfo[ $place{'authtype'} ];
203: my $authparam = $stuinfo[ $place{'autharg'} ];
204: my $first = $stuinfo[ $place{'firstname'} ];
205: my $middle = $stuinfo[ $place{'middlename'} ];
206: my $last = $stuinfo[ $place{'lastname'} ];
207: my $gene = $stuinfo[ $place{'generation'} ];
208: my $usec = $stuinfo[ $place{'groupID'} ];
209: my $end = $stuinfo[ $place{'enddate'} ];
210: my $start = $stuinfo[ $place{'startdate'} ];
211: my $emailaddr = $stuinfo[ $place{'email'} ];
212: my $pid = $stuinfo[ $place{'studentID'} ];
1.1 raeburn 213:
214: # remove non alphanumeric values from section
1.5 raeburn 215: $usec =~ s/\W//g;
1.1 raeburn 216:
1.5 raeburn 217: unless ($emailaddr =~/^[^\@]+\@[^\@]+$/) { $emailaddr =''; }
218: my $emailenc = &HTML::Entities::encode($emailaddr);
1.1 raeburn 219:
220: # Use course defaults where entry is absent
1.5 raeburn 221: if ( ($auth eq '') || (!defined($auth)) ) {
222: $auth = $authtype;
223: }
224: if ( ($authparam eq '') || (!defined($authparam)) ) {
225: $authparam = $autharg;
226: }
227: if ($auth =~ m/^krb/) {
228: $auth .= ":".$authparam;
229: }
230: if ( ($end eq '') || (!defined($end)) ) {
231: $end = $enddate;
232: }
233: if ( ($start eq '') || (!defined($start)) ) {
234: $start = $startdate;
235: }
1.1 raeburn 236: # Clean up whitespace
1.5 raeburn 237: foreach (\$dom,\$uname,\$pid,\$first,\$middle,\$last,\$gene,\$usec) {
238: $$_ =~ s/(\s+$|^\s+)//g;
239: }
1.1 raeburn 240:
241: # Check for existing account in this LON-CAPA domain for this username
1.5 raeburn 242: my $uhome=&Apache::lonnet::homeserver($uname,$dom);
243: if ($uhome eq 'no_host') { # User does not exist
244: my $create_passwd = 0;
245: my $authchk = '';
246: unless ($authparam eq '') { $authchk = 'ok'; };
1.1 raeburn 247: # If no account exists and passwords should be generated
1.5 raeburn 248: if ($authtype eq "int") {
249: if ($authparam eq '') {
250: ($authparam,$create_passwd,$authchk) = &create_password();
251: }
252: } elsif ($authtype eq "local") {
253: if ($authparam eq '') {
254: ($authparam,$create_passwd,$authchk) = &create_password();
255: }
256: } elsif ($authtype =~ m/^krb/) {
257: if ($authparam eq '') {
1.6 raeburn 258: $$logmsg .= "No Kerberos domain was provided for the new user - $uname, so the new student was not enrolled in the course.".$linefeed;
1.5 raeburn 259: $authchk = 'invalid';
260: }
261: } else {
1.3 raeburn 262: $authchk = 'invalid';
1.6 raeburn 263: $$logmsg .= "An invalid authentication type was provided for the new user - $uname, so the student was not enrolled in the course.".$linefeed;
1.3 raeburn 264: }
1.5 raeburn 265: if ($authchk eq 'ok') {
1.1 raeburn 266: # Now create user.
1.5 raeburn 267: my $reply=&Apache::lonnet::modifystudent($dom,$uname,$pid,$auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,'',undef,$emailaddr,'auto',$cid);
268: if ($reply eq 'ok') {
269: $enrollcount ++;
270: $addresult .= "$first $last ($pid) - $uname enrolled in section/group $usec.".$linefeed;
1.6 raeburn 271: if ($context eq 'automated') {
272: $$logmsg .= "New $dom user $uname added successfully.".$linefeed;
273: }
1.5 raeburn 274: unless ($emailenc eq '') {
275: my %emailHash;
276: $emailHash{'critnotification'} = $emailenc;
277: $emailHash{'notification'} = $emailenc;
278: my $putresult = &Apache::lonnet::put('environment',\%emailHash,$dom,$uname);
279: }
280: if ($create_passwd) {
1.1 raeburn 281: # Send e-mail with inital password to new user at $emailaddr
1.5 raeburn 282: $$logmsg .= "Initial password - - sent to ".$emailaddr.$linefeed;
283: } else {
284: $$logmsg .= $linefeed;
285: }
1.3 raeburn 286: } else {
1.5 raeburn 287: $$logmsg .= "An error occurred adding new user $uname - ".$reply.$linefeed;
1.3 raeburn 288: }
1.1 raeburn 289: }
1.5 raeburn 290: } else {
1.1 raeburn 291: # Get the user's information and authentication
1.5 raeburn 292: my %userenv = &Apache::lonnet::get('environment',['firstname','middlename','lastname','generation','id','critnotification','notification'],$dom,$uname);
293: my ($tmp) = keys(%userenv);
294: if ($tmp =~ /^(con_lost|error)/i) {
295: %userenv = ();
296: }
1.1 raeburn 297: # Get the user's e-mail address
1.5 raeburn 298: if ($userenv{critnotification} =~ m/%40/) {
299: unless ($emailenc eq $userenv{critnotification}) {
300: $$logmsg .= "Current critical notification e-mail - ".$userenv{critnotification}." for $uname is different to e-mail address in Institutional classlist - ".$emailenc.$linefeed;
301: }
302: }
303: if ($userenv{notification} =~ m/%40/) {
304: unless ($emailenc eq $userenv{critnotification}) {
305: $$logmsg .= "Current standard notification e-mail - ".$userenv{notification}." for $uname is different to e-mail address in institutional classlist - ".$emailenc.$linefeed;
306: }
307: }
308: my $krbdefdom = '';
309: my $currentauth=&Apache::lonnet::queryauthenticate($uname,$dom);
310: if ($currentauth=~/^krb(4|5):/) {
311: $currentauth=~/^krb(4|5):(.*)/;
312: $krbdefdom=$1;
313: }
314: if ($currentauth=~/^krb(4|5):/ ||
315: $currentauth=~/^unix:/ ||
316: $currentauth=~/^internal:/ ||
317: $currentauth=~/^localauth:/) {
1.1 raeburn 318:
1.5 raeburn 319: } else {
320: $$logmsg .= "Invalid authentication method $currentauth for $uname.".$linefeed;
321: }
1.1 raeburn 322: # Report if authentication methods are different.
1.5 raeburn 323: if ($currentauth ne $auth ) {
1.6 raeburn 324: $$logmsg .= "Authentication mismatch for $uname - $currentauth in system, $auth based on information in classlist or default for this course.".$linefeed;
1.5 raeburn 325: }
1.1 raeburn 326: # Check user data
1.5 raeburn 327: if ($first ne $userenv{'firstname'} ||
328: $middle ne $userenv{'middlename'} ||
329: $last ne $userenv{'lastname'} ||
330: $gene ne $userenv{'generation'} ||
331: $pid ne $userenv{'id'} ) {
1.1 raeburn 332: # Make the change(s)
1.5 raeburn 333: my %changeHash;
334: $changeHash{'firstname'} = $first;
335: $changeHash{'middlename'} = $middle;
336: $changeHash{'lastname'} = $last;
337: $changeHash{'generation'} = $gene;
338: $changeHash{'id'} = $pid;
339: my $putresult = &Apache::lonnet::put('environment',\%changeHash,$dom,$uname);
340: if ($putresult eq 'ok') {
341: $$logmsg .= "User information updated for user: $uname prior to enrollment.".$linefeed;
342: } else {
343: $$logmsg .= "There was a problem modifying user data for existing user - $uname -error: $putresult, enrollment will still be attempted.".$linefeed;
344: }
1.1 raeburn 345: }
1.3 raeburn 346:
347: # Assign the role of student in the course.
1.5 raeburn 348: my $classlist_reply = &Apache::lonnet::modify_student_enrollment($dom,$uname,$pid,$first,$middle,$last,$gene,$usec,$end,$start,'auto',$cid);
349: if ($classlist_reply eq 'ok') {
350: $enrollcount ++;
351: $addresult .= "$first $last ($pid) - $uname enrolled in section/group $usec.".$linefeed;
1.6 raeburn 352: if ($context eq 'automated') {
353: $$logmsg .= "Existing $dom user $uname enrolled successfully.".$linefeed;
354: }
1.5 raeburn 355: } else {
356: $$logmsg .= "There was a problem updating the classlist db file for user $uname to show the new enrollment -error: $classlist_reply, so no enrollment occurred for this user.".$linefeed;
357: }
1.3 raeburn 358: }
1.1 raeburn 359: }
360: }
361: }
362: }
363: # Do drops
364: if ( ($drops == 1) && (@reg_students > 0) ) {
365: foreach my $uname (@localstudents) {
366: if ($$currlist{$uname}[$type] eq "auto") {
367: my @saved = ();
368: if (!grep/^$uname$/,@reg_students) {
369: # Check for changed usernames by checking studentIDs
370: if (grep/^$$currlist{$uname}[ $stuid ]$/,@allINids) {
371: foreach my $match (@{$unameFromINid{$$currlist{$uname}[ $stuid ]}} ) {
1.6 raeburn 372: $$logmsg .= "A possible change in username has been detected for a student enrolled in this course. The existing LON-CAPA classlist contains user: $uname and student ID: $$currlist{$uname}[ $place{studentID} ]. This username has been dropped from the institutional classlist, but the same student ID is used for user: $match who still appears in the institutional classlist. You may need to move the student data files for user: $uname to $match.".$linefeed;
1.1 raeburn 373: push @saved,$uname;
374: }
375: } elsif (@saved == 0) {
376: my $drop_reply = &Apache::lonnet::modifystudent($dom,$uname,'','','',undef,undef,undef,undef,$$currlist{$uname}[$sec],time,undef,undef,undef,undef,undef,$cid);
377: if ($drop_reply !~ /^ok/) {
1.5 raeburn 378: $$logmsg .= "An error occured during the attempt to expire the $uname from the old section $$currlist{$uname}[$sec] - $drop_reply.".$linefeed;
1.1 raeburn 379: } else {
380: $dropcount ++;
381: my %userenv = &Apache::lonnet::get('environment',['firstname','lastname','id'],$dom,$uname);
382: $dropresult .= $userenv{'firstname'}." ".$userenv{'lastname'}." (".$userenv{'id'}.") - ".$uname." dropped from section/group ".$$currlist{$uname}[$sec].$linefeed;
383: }
384: }
385: }
386: }
387: }
388: }
1.5 raeburn 389:
390: # Terminated explictly allowed access to student creation/modification
391: if ($context eq 'automated') {
392: delete($ENV{'allowed.cst'});
393: }
1.1 raeburn 394: if ($enrollcount > 0) {
395: if ($context eq "updatenow") {
1.6 raeburn 396: $addresult = substr($addresult,0,rindex($addresult,"<li>"));
1.1 raeburn 397: $addresult = "The following $enrollcount student(s) was/were added to this LON-CAPA course:<br/><ul><li>".$addresult."</li></ul><br/><br/>";
398: } else {
399: $addresult = "The following $enrollcount student(s) was/were added to this LON-CAPA course:\n\n".$addresult."\n\n";
400: }
401: }
402: if ($dropcount > 0) {
403: if ($context eq "updatenow") {
1.6 raeburn 404: $dropresult = substr($dropresult,0,rindex($dropresult,"<li>"));
1.1 raeburn 405: $dropresult = "The following $dropcount student(s) was/were expired from this LON-CAPA course:<br/><ul><li>".$dropresult."</li></ul><br/><br/>";
406: } else {
407: $dropresult = "The following $dropcount student(s) was/were expired from this LON-CAPA course:\n\n".$dropresult."\n\n";
408: }
409: }
410: if ( ($adds) && ($enrollcount == 0) ) {
411: $addresult = "There were no new students to add to the course.";
412: if ($context eq "updatenow") {
413: $addresult .="<br/><br/>";
414: } else {
415: $addresult .="\n";
416: }
417: }
418: if ( ($drops) && ($dropcount == 0) ) {
419: $dropresult = "There were no students with roles to expire because all active students previously added to the course from institutional classlist(s) are still officially registered.";
420: if ($context eq "updatenow") {
421: $dropresult .="<br/>";
422: } else {
423: $dropresult .="\n";
424: }
425: }
1.5 raeburn 426: my $changecount = $enrollcount + $dropcount;
427: return ($changecount,$addresult.$dropresult);
1.6 raeburn 428: }
1.1 raeburn 429:
430: sub parse_classlist {
1.6 raeburn 431: my ($tmpdir,$dom,$crs,$class,$placeref,$groupID,$studentsref) = @_;
1.5 raeburn 432: my $xmlfile = $tmpdir."/tmp/".$dom."_".$crs."_".$class."_classlist.xml";
1.6 raeburn 433: my $uname = '';
434: my @state;
435: my @items = ('autharg','authtype','email','enddate','firstname','generation','lastname','middlename','startdate','studentID');
436: my $p = HTML::Parser->new
437: (
438: xml_mode => 1,
439: start_h =>
440: [sub {
441: my ($tagname, $attr) = @_;
442: push @state, $tagname;
443: if ("@state" eq "students student") {
444: $uname = $attr->{username};
445: }
446: }, "tagname, attr"],
447: text_h =>
448: [sub {
449: my ($text) = @_;
450: if ("@state" eq "students student groupID") {
451: $$studentsref{$uname}[ $$placeref{'groupID'} ] = $groupID;
452: } else {
453: foreach my $item (@items) {
454: if ("@state" eq "students student $item") {
455: $$studentsref{$uname}[ $$placeref{$item} ] = $text;
456: }
457: }
458: }
459: }, "dtext"],
460: end_h =>
461: [sub {
462: my ($tagname) = @_;
463: pop @state;
464: }, "tagname"],
465: );
466:
467: $p->parse_file($xmlfile);
468: $p->eof;
1.3 raeburn 469: # if (-e "$xmlfile") {
470: # unlink $xmlfile;
471: # }
472: return;
1.1 raeburn 473: }
474:
475: sub create_password {
1.3 raeburn 476: my ($authparam,$create_passwd,$authreply);
477: return ($authparam,$create_passwd,$authreply);
1.1 raeburn 478: }
479:
480: sub CL_autharg { return 0; }
481: sub CL_authtype { return 1;}
482: sub CL_email { return 2;}
483: sub CL_enddate { return 3;}
484: sub CL_firstname { return 4;}
485: sub CL_generation { return 5;}
486: sub CL_groupID { return 6;}
487: sub CL_lastname { return 7;}
488: sub CL_middlename { return 8;}
489: sub CL_startdate { return 9; }
490: sub CL_studentID { return 10; }
491:
492: 1;
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