1: # Automated Enrollment manager
2: # $Id: Enrollment.pm,v 1.16 2004/06/29 04:30:00 raeburn 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: #
26: package LONCAPA::Enrollment;
27:
28: use Apache::loncoursedata;
29: use Apache::lonnet;
30: use Apache::lonmsg;
31: use HTML::Entities;
32: use LONCAPA::Configuration;
33: use Time::Local;
34: use lib '/home/httpd/lib/perl';
35: use localenroll;
36:
37: use strict;
38:
39: sub update_LC {
40: my ($dom,$crs,$adds,$drops,$startdate,$enddate,$authtype,$autharg,$classesref,$groupref,$logmsg,$newusermsg,$context) = @_;
41: # Get current LON-CAPA student enrollment for this class
42: my $configvars = &LONCAPA::Configuration::read_conf('loncapa.conf');
43: my $cid = $dom."_".$crs;
44: my $roster = &Apache::loncoursedata::get_classlist($cid,$dom,$crs);
45: my $cend = &Apache::loncoursedata::CL_END;
46: my $cstart = &Apache::loncoursedata::CL_START;
47: my $stuid=&Apache::loncoursedata::CL_ID;
48: my $sec=&Apache::loncoursedata::CL_SECTION;
49: my $status=&Apache::loncoursedata::CL_STATUS;
50: my $type=&Apache::loncoursedata::CL_TYPE;
51: my $lockedtype=&Apache::loncoursedata::CL_LOCKEDTYPE;
52: my @localstudents = ();
53: my @futurestudents = ();
54: my @activestudents = ();
55: my $currlist;
56: foreach my $uname (keys %{$roster} ) {
57: if ($uname =~ m/^(.+):$dom$/) {
58: if ($$roster{$uname}[$status] eq "Active") {
59: push @activestudents, $1;
60: @{$$currlist{$1}} = @{$$roster{$uname}};
61: push @localstudents, $1;
62: } elsif ( ($$roster{$uname}[$cstart] > time) && ($$roster{$uname}[$cend] > time || $$roster{$uname}[$cend] == 0 || $$roster{$uname}[$cend] eq '') ) {
63: push @futurestudents, $1;
64: @{$$currlist{$1}} = @{$$roster{$uname}};
65: push @localstudents, $1;
66: }
67: }
68: }
69: my $linefeed = '';
70: my $addresult = '';
71: my $dropresult = '';
72: if ($context eq "updatenow") {
73: $linefeed = "</li>\n<li>";
74: } elsif ($context eq "automated") {
75: $linefeed = "\n";
76: }
77: my $enrollcount = 0;
78: my $dropcount = 0;
79:
80: srand( time() ^ ($$ + ($$ << 15)) ); # Seed rand in case initial passwords have to be generated for new users.
81:
82: # Get mapping of IDs to usernames for current LON-CAPA student enrollment for this class
83: my @LCids = ();
84: my %unameFromLCid = ();
85: foreach my $uname (sort keys %{$currlist}) {
86: my $stuID = $$currlist{$uname}[$stuid];
87: if (!grep/^$stuID$/,@LCids) {
88: push @LCids, $stuID;
89: @{$unameFromLCid{$stuID}} = ();
90: }
91: push @{$unameFromLCid{$stuID}},$uname;
92: }
93:
94: # Get latest institutional enrollment for this class.
95: my %allenrolled = ();
96: my @reg_students = ();
97: my %place = ();
98: $place{'autharg'} = &CL_autharg();
99: $place{'authtype'} = &CL_authtype();
100: $place{'email'} = &CL_email();
101: $place{'enddate'} = &CL_enddate();
102: $place{'firstname'} = &CL_firstname();
103: $place{'generation'} = &CL_generation();
104: $place{'groupID'} = &CL_groupID();
105: $place{'lastname'} = &CL_lastname();
106: $place{'middlename'} = &CL_middlename();
107: $place{'startdate'} = &CL_startdate();
108: $place{'studentID'} = &CL_studentID();
109: my %ucount = ();
110: my %enrollinfo = ();
111: foreach my $class (@{$classesref}) {
112: my %enrolled = ();
113: &parse_classlist($$configvars{'lonDaemons'},$dom,$crs,$class,\%place,$$groupref{$class},\%enrolled);
114: foreach my $uname (sort keys %enrolled ) {
115: if (!grep/^$uname$/,@reg_students) {
116: push @reg_students,$uname;
117: $ucount{$uname} = 0;
118: @{$allenrolled{$uname}} = ();
119: }
120: @{$allenrolled{$uname}[$ucount{$uname}]} = @{$enrolled{$uname}};
121: $ucount{$uname} ++;
122: }
123: }
124:
125: # Check for multiple sections for a single student
126: my @okusers = ();
127: foreach my $uname (@reg_students) {
128: if (@{$allenrolled{$uname}} > 1) {
129: my @sections = ();
130: my $saved;
131: for (my $i=0; $i<@{$allenrolled{$uname}}; $i++) {
132: my @stuinfo = @{$allenrolled{$uname}[$i]};
133: my $secnum = $stuinfo[ $place{'groupID'} ];
134: unless ($secnum eq '') {
135: unless (grep/^$secnum$/,@sections) {
136: $saved = $i;
137: push @sections,$secnum;
138: }
139: }
140: }
141: if (@sections == 0) {
142: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[0]};
143: push @okusers, $uname;
144: }
145: elsif (@sections == 1) {
146: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[$saved]};
147: push @okusers, $uname;
148: }
149: elsif (@sections > 1) {
150: $$logmsg = "$uname appears in classlists for the more than one section of this course, i.e. in sections: ";
151: foreach (@sections) {
152: $$logmsg .= " $_,";
153: }
154: chop($$logmsg);
155: $$logmsg .= ". Because of this ambiguity, no enrollment action was taken for this student.".$linefeed;
156: }
157: } else {
158: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[0]};
159: push @okusers, $uname;
160: }
161: }
162: # Get mapping of student IDs to usernames for users in institutional data for this class
163: my @allINids = ();
164: my %unameFromINid = ();
165: foreach my $uname (@okusers) {
166: $enrollinfo{$uname}[ $place{'studentID'} ] =~ tr/A-Z/a-z/;
167: my $stuID = $enrollinfo{$uname}[ $place{'studentID'} ];
168: if (grep/^$stuID$/,@allINids) {
169: push @{$unameFromINid{$stuID}},$uname;
170: } else {
171: push @allINids, $stuID;
172: @{$unameFromINid{$stuID}} = $uname;
173: }
174: }
175: # Explicitly allow access to creation/modification of students if called as an automated process.
176: if ($context eq 'automated') {
177: $ENV{'allowed.cst'}='F';
178: }
179:
180: # Compare IDs with existing LON-CAPA enrollment for this class
181: foreach my $uname (@okusers) {
182: unless ($uname eq '') {
183: my %uidhash=&Apache::lonnet::idrget($dom,$uname);
184: my @stuinfo = @{$enrollinfo{$uname}};
185: my $access = '';
186: if (grep/^$uname$/,@localstudents) {
187: # Check for studentID changes
188: if ( ($uidhash{$uname}) && ($uidhash{$uname} !~ /error\:/) ) {
189: unless ( ($uidhash{$uname}) eq ($stuinfo[ $place{studentID} ]) ) {
190: $$logmsg .= "Change in ID for $uname. StudentID in LON-CAPA system is $uidhash{$uname}; StudentID in institutional data is $stuinfo[ $place{studentID} ]".$linefeed;
191: }
192: }
193: # Check for switch from manual to auto
194: unless (($$currlist{$uname}[$type] eq "auto") || ($$currlist{$uname}[$lockedtype] eq "1") || (!$adds) ) {
195: # drop manually added student
196: my $drop_reply = &Apache::lonnet::modifystudent($dom,$uname,'','','',undef,undef,undef,undef,$$currlist{$uname}[$sec],time,undef,undef,undef,undef,'auto','',$cid);
197: # re-enroll as auto student
198: if ($drop_reply !~ /^ok/) {
199: $$logmsg .= "An error occured during the attempt to convert $uname from a manual type to an auto type student - $drop_reply.".$linefeed;
200: } else {
201: # re-enroll as auto student
202: my ($auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc);
203: &prepare_add($authtype,$autharg,$enddate,$startdate,\@stuinfo,\%place,\$dom,\$uname,\$auth,\$authparam,\$first,\$middle,\$last,\$gene,\$usec,\$end,\$start,\$emailaddr,\$pid,\$emailenc);
204: if ($$currlist{$uname}[$sec] ne $usec) {
205: $$logmsg .= "Section for $uname switched from $$currlist{$uname}[$sec] to $usec".$linefeed;
206: }
207: &execute_add($context,'switchtype',$uname,$dom,$auth,$authparam,$first,$middle,$last,$gene,$pid,$usec,$end,$start,$emailenc,$cid,\$addresult,\$enrollcount,$linefeed,$logmsg);
208: }
209: }
210: # Check for section changes
211: if ($$currlist{$uname}[$sec] eq $stuinfo[ $place{groupID} ]) {
212: # Check for access date changes for students with access starting in the future.
213: if ( (grep/^$uname$/,@futurestudents) && ($$currlist{$uname}[$type] eq "auto") && ($adds == 1) ) {
214: my $datechange = &datechange_check($$currlist{$uname}[$cstart],$$currlist{$uname}[$cend],$startdate,$enddate);
215: if ($datechange) {
216: my $modify_access_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$enddate,$startdate,'auto','',$cid);
217: $access = &showaccess($enddate,$startdate);
218: if ($modify_access_result =~ /^ok/) {
219: $$logmsg .= "Change in access dates for $uname.".$access.$linefeed;
220: } else {
221: $$logmsg .= "Error when attempting to change start and/or end access dates for $uname in section: ".$stuinfo[ $place{groupID} ]." -error $modify_access_result".$linefeed;
222: }
223: }
224: }
225: } else {
226: if ( ($$currlist{$uname}[$type] eq "auto") && ($adds == 1) ) {
227: # Delete from roles.db for current section
228: my $expiretime = time;
229: my $uurl='/'.$cid;
230: $uurl=~s/\_/\//g;
231: if ($$currlist{$uname}[$sec]) {
232: $uurl.='/'.$$currlist{$uname}[$sec];
233: }
234: my $expire_role_result = &Apache::lonnet::assignrole($dom,$uname,$uurl,'st',$expiretime);
235: if ($expire_role_result eq 'ok') {
236: my $modify_section_result;
237: if (grep/^$uname$/,@activestudents) {
238: $modify_section_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$$currlist{$uname}[$cend],$$currlist{$uname}[$cstart],'auto','',$cid);
239: } else {
240: $modify_section_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$enddate,$startdate,'auto','',$cid);
241: $access = &showaccess($enddate,$startdate);
242: }
243: if ($modify_section_result =~ /^ok/) {
244: $$logmsg .= "Section for $uname switched from old section: ".$$currlist{$uname}[$sec] ." to new section: ".$stuinfo[ $place{groupID} ].".".$access.$linefeed;
245: } else {
246: $$logmsg .= "Error when attempting section change for $uname from old section ".$$currlist{$uname}[$sec]." to new section: ".$stuinfo[ $place{groupID} ]." -error: $modify_section_result".$linefeed;
247: }
248: } else {
249: $$logmsg .= "Error when attempting to expire role for $uname in old section" .$$currlist{$uname}[$sec]." -error: $expire_role_result".$linefeed;
250: }
251: }
252: }
253: } else {
254: # Check for changed usernames by checking studentIDs
255: if ( ($stuinfo[ $place{studentID} ] ne '') && (grep/^$stuinfo[ $place{studentID} ]$/,@LCids) ) {
256: if (grep/^$$currlist{$uname}[ $place{'studentID'} ]$/,@allINids) {
257: foreach my $match ( @{ $unameFromLCid{ $stuinfo[ $place{studentID} ] } } ) {
258: if (grep/^$match$/,@okusers) {
259: $$logmsg .= "A possible change in username has been detected for a student enrolled in this course. The existing LON-CAPA classlist contains user: $uname and student ID: ".$$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;
260: }
261: }
262: }
263: } elsif ($adds == 1) {
264: my ($auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc);
265: &prepare_add($authtype,$autharg,$enddate,$startdate,\@stuinfo,\%place,\$dom,\$uname,\$auth,\$authparam,\$first,\$middle,\$last,\$gene,\$usec,\$end,\$start,\$emailaddr,\$pid,\$emailenc);
266: # Check for existing account in this LON-CAPA domain for this username
267: my $uhome=&Apache::lonnet::homeserver($uname,$dom);
268: if ($uhome eq 'no_host') { # User does not exist
269: my $create_passwd = 0;
270: my $authchk = '';
271: unless ($authparam eq '') { $authchk = 'ok'; };
272: # If no account exists and passwords should be generated
273: if ($auth eq "internal") {
274: if ($authparam eq '') {
275: ($authparam) = &create_password();
276: if ($authparam eq '') {
277: $authchk = '';
278: } else {
279: $create_passwd = 1;
280: $authchk = 'ok';
281: }
282: }
283: } elsif ($auth eq "localauth") {
284: ($authparam,$create_passwd,$authchk) = &localenroll::create_password($authparam);
285: } elsif ($auth =~ m/^krb/) {
286: if ($authparam eq '') {
287: $$logmsg .= "No Kerberos domain was provided for the new user - $uname, so the new student was not enrolled in the course.".$linefeed;
288: $authchk = 'invalid';
289: }
290: } else {
291: $authchk = 'invalid';
292: $$logmsg .= "An invalid authentication type was provided for the new user - $uname, so the student was not enrolled in the course.".$linefeed;
293: }
294: if ($authchk eq 'ok') {
295: # Now create user.
296: my $reply=&Apache::lonnet::modifystudent($dom,$uname,$pid,$auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,'',undef,$emailaddr,'auto','',$cid);
297: if ($reply eq 'ok') {
298: $access = &showaccess($end,$start);
299: $enrollcount ++;
300: $addresult .= "$first $last ($pid) - $uname enrolled in section/group $usec.".$access.$linefeed;
301: if ($context eq 'automated') {
302: $$logmsg .= "New $dom user $uname added successfully.";
303: }
304: unless ($emailenc eq '') {
305: my %emailHash;
306: $emailHash{'critnotification'} = $emailenc;
307: $emailHash{'notification'} = $emailenc;
308: my $putresult = &Apache::lonnet::put('environment',\%emailHash,$dom,$uname);
309: }
310: if ($create_passwd) {
311: # Send e-mail with initial password to new user at $emailaddr.
312: # If e-mail address is invalid, send password via message to courseowner i
313: # (if automated call) or to user if roster update.
314: if ($emailaddr eq '') {
315: $$newusermsg .= " username: $uname, password: ".$authparam.$linefeed."\n";
316: } else {
317: my $subject = "New LON-CAPA account";
318: my $body = "You have been enrolled in the LON-CAPA system at your school, because you are a registered student in a class that is using the LON-CAPA course management and online homework system.\n\nYou should log-in to the system using the following credentials:\nusername: $uname\npassword: $authparam\n\nThe URL you should use to access the LON-CAPA system at your school is: http://".$ENV{'SERVER_NAME'};
319: &Apache::lonmsg::sendemail($emailaddr,$subject,$body);
320: }
321: if ($context eq 'automated') {
322: $$logmsg .= " Initial password - - sent to ".$emailaddr.$linefeed;
323: }
324: } else {
325: if ($context eq 'automated') {
326: $$logmsg .= $linefeed;
327: }
328: }
329: } else {
330: $$logmsg .= "An error occurred adding new user $uname - ".$reply.$linefeed;
331: }
332: }
333: } else {
334: &execute_add($context,'newstudent',$uname,$dom,$auth,$authparam,$first,$middle,$last,$gene,$pid,$usec,$end,$start,$emailenc,$cid,\$addresult,\$enrollcount,$linefeed,$logmsg);
335: }
336: }
337: }
338: }
339: }
340: # Do drops
341: if ( ($drops == 1) && (@reg_students > 0) ) {
342: foreach my $uname (@localstudents) {
343: if ($$currlist{$uname}[$type] eq "auto") {
344: my @saved = ();
345: if (!grep/^$uname$/,@reg_students) {
346: # Check for changed usernames by checking studentIDs
347: if (grep/^$$currlist{$uname}[ $stuid ]$/,@allINids) {
348: foreach my $match (@{$unameFromINid{$$currlist{$uname}[ $stuid ]}} ) {
349: $$logmsg .= "A possible change in username has been detected for a student enrolled in this course. The existing LON-CAPA classlist contains user: $uname and student ID: $$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;
350: push @saved,$uname;
351: }
352: } elsif (@saved == 0) {
353: my $drop_reply = &Apache::lonnet::modifystudent($dom,$uname,'','','',undef,undef,undef,undef,$$currlist{$uname}[$sec],time,undef,undef,undef,undef,'auto','',$cid);
354: if ($drop_reply !~ /^ok/) {
355: $$logmsg .= "An error occured during the attempt to expire the $uname from the old section $$currlist{$uname}[$sec] - $drop_reply.".$linefeed;
356: } else {
357: $dropcount ++;
358: my %userenv = &Apache::lonnet::get('environment',['firstname','lastname','id'],$dom,$uname);
359: $dropresult .= $userenv{'firstname'}." ".$userenv{'lastname'}." (".$userenv{'id'}.") - ".$uname." dropped from section/group ".$$currlist{$uname}[$sec].$linefeed;
360: if ($context eq 'automated') {
361: $$logmsg .= "User $uname student role expired from course.".$linefeed;
362: }
363: }
364: }
365: }
366: }
367: }
368: }
369:
370: # Terminated explictly allowed access to student creation/modification
371: if ($context eq 'automated') {
372: delete($ENV{'allowed.cst'});
373: }
374: if ($enrollcount > 0) {
375: if ($context eq "updatenow") {
376: $addresult = substr($addresult,0,rindex($addresult,"<li>"));
377: $addresult = "The following $enrollcount student(s) was/were added to this LON-CAPA course:<br/><ul><li>".$addresult."</li></ul><br/><br/>";
378: } else {
379: $addresult = "The following $enrollcount student(s) was/were added to this LON-CAPA course:\n\n".$addresult."\n\n";
380: }
381: }
382: if ($dropcount > 0) {
383: if ($context eq "updatenow") {
384: $dropresult = substr($dropresult,0,rindex($dropresult,"<li>"));
385: $dropresult = "The following $dropcount student(s) was/were expired from this LON-CAPA course:<br/><ul><li>".$dropresult."</li></ul><br/><br/>";
386: } else {
387: $dropresult = "The following $dropcount student(s) was/were expired from this LON-CAPA course:\n\n".$dropresult."\n\n";
388: }
389: }
390: if ( ($adds) && ($enrollcount == 0) ) {
391: $addresult = "There were no new students to add to the course.";
392: if ($context eq "updatenow") {
393: $addresult .="<br/><br/>";
394: } else {
395: $addresult .="\n";
396: }
397: }
398: if ( ($drops) && ($dropcount == 0) ) {
399: $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.";
400: if ($context eq "updatenow") {
401: $dropresult .="<br/>";
402: } else {
403: $dropresult .="\n";
404: }
405: }
406: my $changecount = $enrollcount + $dropcount;
407: return ($changecount,$addresult.$dropresult);
408: }
409:
410: sub prepare_add {
411: my ($authtype,$autharg,$enddate,$startdate,$stuinfo,$place,$dom,$uname,$auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc) = @_;
412: $$auth = $$stuinfo[ $$place{'authtype'} ];
413: $$authparam = $$stuinfo[ $$place{'autharg'} ];
414: $$first = $$stuinfo[ $$place{'firstname'} ];
415: $$middle = $$stuinfo[ $$place{'middlename'} ];
416: $$last = $$stuinfo[ $$place{'lastname'} ];
417: $$gene = $$stuinfo[ $$place{'generation'} ];
418: $$usec = $$stuinfo[ $$place{'groupID'} ];
419: $$end = $$stuinfo[ $$place{'enddate'} ];
420: $$start = $$stuinfo[ $$place{'startdate'} ];
421: $$emailaddr = $$stuinfo[ $$place{'email'} ];
422: $$pid = $$stuinfo[ $$place{'studentID'} ];
423:
424: # remove non alphanumeric values from section
425: $$usec =~ s/\W//g;
426:
427: unless ($$emailaddr =~/^[^\@]+\@[^\@]+$/) { $$emailaddr =''; }
428: $$emailenc = &HTML::Entities::encode($$emailaddr,'<>&"');
429:
430: # Use course defaults where entry is absent
431: if ( ($$auth eq '') || (!defined($$auth)) ) {
432: $$auth = $authtype;
433: }
434: if ( ($$authparam eq '') || (!defined($$authparam)) ) {
435: $$authparam = $autharg;
436: }
437: if ( ($$end eq '') || (!defined($$end)) ) {
438: $$end = $enddate;
439: }
440: if ( ($$start eq '') || (!defined($$start)) ) {
441: $$start = $startdate;
442: }
443: # Clean up whitespace
444: foreach ($dom,$uname,$pid,$first,$middle,$last,$gene,$usec) {
445: $$_ =~ s/(\s+$|^\s+)//g;
446: }
447: return;
448: }
449:
450: sub execute_add {
451: my ($context,$caller,$uname,$dom,$auth,$authparam,$first,$middle,$last,$gene,$pid,$usec,$end,$start,$emailenc,$cid,$addresult,$enrollcount,$linefeed,$logmsg) = @_;
452: # Get the user's information and authentication
453: my %userenv = &Apache::lonnet::get('environment',['firstname','middlename','lastname','generation','id','critnotification','notification'],$dom,$uname);
454: my ($tmp) = keys(%userenv);
455: if ($tmp =~ /^(con_lost|error)/i) {
456: %userenv = ();
457: }
458: # Get the user's e-mail address
459: if ($userenv{critnotification} =~ m/%40/) {
460: unless ($emailenc eq $userenv{critnotification}) {
461: $$logmsg .= "Current critical notification e-mail
462: - ".$userenv{critnotification}." for $uname is different to e-mail address in institutional classlist - ".$emailenc.$linefeed;
463: }
464: }
465: if ($userenv{notification} =~ m/%40/) {
466: unless ($emailenc eq $userenv{critnotification}) {
467: $$logmsg .= "Current standard notification e-mail
468: - ".$userenv{notification}." for $uname is different to e-mail address in institutional classlist - ".$emailenc.$linefeed;
469: }
470: }
471: my $krbdefdom = '';
472: my $currentauth=&Apache::lonnet::queryauthenticate($uname,$dom);
473: if ($currentauth=~/^(krb[45]):(.*)/) {
474: $currentauth = $1;
475: $krbdefdom = $2;
476: } elsif ($currentauth=~ /^(unix|internal|localauth):/) {
477: $currentauth = $1;
478: } else {
479: $$logmsg .= "Invalid authentication method $currentauth for $uname.".$linefeed;
480: }
481: # Report if authentication methods are different.
482: if ($currentauth ne $auth) {
483: $$logmsg .= "Authentication type mismatch for $uname - '$currentauth' in system, '$auth' based on information in classlist or default for this course.".$linefeed;
484: } elsif ($auth =~ m/^krb/) {
485: if ($krbdefdom ne $authparam) {
486: $$logmsg .= "Kerberos domain mismatch for $uname - '$krbdefdom' in system, '$authparam' based on information in classlist or default for this course.".$linefeed;
487: }
488: }
489:
490: # Check user data
491: if ($first ne $userenv{'firstname'} ||
492: $middle ne $userenv{'middlename'} ||
493: $last ne $userenv{'lastname'} ||
494: $gene ne $userenv{'generation'} ||
495: $pid ne $userenv{'id'} ) {
496: # Make the change(s)
497: my %changeHash;
498: $changeHash{'firstname'} = $first;
499: $changeHash{'middlename'} = $middle;
500: $changeHash{'lastname'} = $last;
501: $changeHash{'generation'} = $gene;
502: $changeHash{'id'} = $pid;
503: my $putresult = &Apache::lonnet::put('environment',\%changeHash,$dom,$uname);
504: if ($putresult eq 'ok') {
505: $$logmsg .= "User information updated for user: $uname prior to enrollment.".$linefeed;
506: } else {
507: $$logmsg .= "There was a problem modifying user data for existing user - $uname -error: $putresult, enrollment will still be attempted.".$linefeed;
508: }
509: }
510:
511: # Assign the role of student in the course.
512: my $classlist_reply = &Apache::lonnet::modify_student_enrollment($dom,$uname,$pid,$first,$middle,$last,$gene,$usec,$end,$start,'auto','',$cid);
513: if ($classlist_reply eq 'ok') {
514: my $access = &showaccess($end,$start);
515: if ($caller eq 'switchtype') {
516: $$logmsg .= "Existing user $uname detected in institutional classlist - switched from 'manual' to 'auto' enrollment in section/group $usec.".$access.$linefeed;
517: } elsif ($caller eq 'newstudent') {
518: $$enrollcount ++;
519: $$addresult .= "$first $last ($pid) - $uname enrolled in section/group $usec.".$access.$linefeed;
520: }
521: if ($context eq 'automated') {
522: $$logmsg .= "Existing $dom user $uname enrolled successfully.".$linefeed;
523: }
524: } else {
525: $$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;
526: }
527: return;
528: }
529:
530: sub datechange_check {
531: my ($oldstart,$oldend,$startdate,$enddate) = @_;
532: my $datechange = 0;
533: unless ($oldstart eq $startdate) {
534: $datechange = 1;
535: }
536: if (!$datechange) {
537: if (!$oldend) {
538: if ($enddate) {
539: $datechange = 1;
540: }
541: } elsif ($oldend ne $enddate) {
542: $datechange = 1;
543: }
544: }
545: return $datechange;
546: }
547:
548: sub showaccess {
549: my ($end,$start) = @_;
550: my $showstart;
551: my $showend;
552: if ( (!$start) || ($start <= time) ) {
553: $showstart = 'immediately';
554: } else {
555: $showstart = &Apache::lonlocal::locallocaltime($start);
556: }
557: if (!$end) {
558: $showend = 'no end date';
559: } else {
560: $showend = &Apache::lonlocal::locallocaltime($end);
561: }
562: my $access_msg = " Access starts: ".$showstart.", ends: ".$showend.".";
563: return $access_msg;
564: }
565:
566: sub parse_classlist {
567: my ($tmpdir,$dom,$crs,$class,$placeref,$groupID,$studentsref) = @_;
568: my $xmlfile = $tmpdir."/tmp/".$dom."_".$crs."_".$class."_classlist.xml";
569: my $uname = '';
570: my @state;
571: my @items = ('autharg','authtype','email','firstname','generation','lastname','middlename','studentID');
572: my $p = HTML::Parser->new
573: (
574: xml_mode => 1,
575: start_h =>
576: [sub {
577: my ($tagname, $attr) = @_;
578: push @state, $tagname;
579: if ("@state" eq "students student") {
580: $uname = $attr->{username};
581: }
582: }, "tagname, attr"],
583: text_h =>
584: [sub {
585: my ($text) = @_;
586: if ("@state" eq "students student groupID") {
587: $$studentsref{$uname}[ $$placeref{'groupID'} ] = $groupID;
588: } elsif ("@state" eq "students student startdate") {
589: my $start = $text;
590: unless ($text eq '') {
591: $start = &process_date($text);
592: }
593: $$studentsref{$uname}[ $$placeref{'startdate'} ] = $start;
594: } elsif ("@state" eq "students student enddate") {
595: my $end = $text;
596: unless ($text eq '') {
597: $end = &process_date($text);
598: }
599: $$studentsref{$uname}[ $$placeref{'enddate'} ] = $end;
600: } else {
601: foreach my $item (@items) {
602: if ("@state" eq "students student $item") {
603: $$studentsref{$uname}[ $$placeref{$item} ] = $text;
604: }
605: }
606: }
607: }, "dtext"],
608: end_h =>
609: [sub {
610: my ($tagname) = @_;
611: pop @state;
612: }, "tagname"],
613: );
614:
615: $p->parse_file($xmlfile);
616: $p->eof;
617: if (-e "$xmlfile") {
618: unlink $xmlfile;
619: }
620: return;
621: }
622:
623: sub process_date {
624: my $timestr = shift;
625: my $timestamp = '';
626: if ($timestr =~ m/^\d{4}:\d{2}:\d{2}/) {
627: my @entries = split/:/,$timestr;
628: for (my $j=0; $j<@entries; $j++) {
629: if ( length($entries[$j]) > 1 ) {
630: $entries[$j] =~ s/^0//;
631: }
632: }
633: $entries[1] = $entries[1] - 1;
634: $timestamp = timelocal($entries[5],$entries[4],$entries[3],$entries[2],$entries[1],$entries[0]);
635: }
636: return $timestamp;
637: }
638:
639: sub create_password {
640: my $passwd = '';
641: my @letts = ("a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z");
642: for (my $i=0; $i<8; $i++) {
643: my $lettnum = int (rand 2);
644: my $item = '';
645: if ($lettnum) {
646: $item = $letts[int( rand(26) )];
647: my $uppercase = int(rand 2);
648: if ($uppercase) {
649: $item =~ tr/a-z/A-Z/;
650: }
651: } else {
652: $item = int( rand(10) );
653: }
654: $passwd .= $item;
655: }
656: return ($passwd);
657: }
658:
659: sub check_user_status {
660: my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
661: my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
662: my @uroles = keys %userinfo;
663: my $srchstr;
664: my $active_chk = 'none';
665: if (@uroles > 0) {
666: if ( ($role eq 'cc') || ($secgrp eq '') || ( !defined($secgrp) ) ) {
667: $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
668: } else {
669: $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role;
670: }
671: if (grep/^$srchstr$/,@uroles) {
672: my $role_end = 0;
673: my $role_start = 0;
674: $active_chk = 'ok';
675: if ( $userinfo{$srchstr} =~ m/^($role)_(\d+)/ ) {
676: $role_end = $2;
677: if ( $userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/ )
678: {
679: $role_start = $3;
680: }
681: }
682: if ($role_start > 0) {
683: if (time < $role_start) {
684: $active_chk = 'expired';
685: }
686: }
687: if ($role_end > 0) {
688: if (time > $role_end) {
689: $active_chk = 'expired';
690: }
691: }
692: }
693: }
694: return $active_chk;
695: }
696:
697: sub CL_autharg { return 0; }
698: sub CL_authtype { return 1;}
699: sub CL_email { return 2;}
700: sub CL_enddate { return 3;}
701: sub CL_firstname { return 4;}
702: sub CL_generation { return 5;}
703: sub CL_groupID { return 6;}
704: sub CL_lastname { return 7;}
705: sub CL_middlename { return 8;}
706: sub CL_startdate { return 9; }
707: sub CL_studentID { return 10; }
708:
709: 1;
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