1: # Automated Enrollment manager
2: # $Id: Enrollment.pm,v 1.18 2004/09/13 16:36:34 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:
36: use strict;
37:
38: sub update_LC {
39: my ($dom,$crs,$adds,$drops,$startdate,$enddate,$authtype,$autharg,$classesref,$groupref,$logmsg,$newusermsg,$context) = @_;
40: # Get current LON-CAPA student enrollment for this class
41: my $configvars = &LONCAPA::Configuration::read_conf('loncapa.conf');
42: my $cid = $dom."_".$crs;
43: my $roster = &Apache::loncoursedata::get_classlist($cid,$dom,$crs);
44: my $cend = &Apache::loncoursedata::CL_END;
45: my $cstart = &Apache::loncoursedata::CL_START;
46: my $stuid=&Apache::loncoursedata::CL_ID;
47: my $sec=&Apache::loncoursedata::CL_SECTION;
48: my $status=&Apache::loncoursedata::CL_STATUS;
49: my $type=&Apache::loncoursedata::CL_TYPE;
50: my $lockedtype=&Apache::loncoursedata::CL_LOCKEDTYPE;
51: my @localstudents = ();
52: my @futurestudents = ();
53: my @activestudents = ();
54: my @excludedstudents = ();
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}} = @{$$roster{$uname}};
65: push @localstudents, $1;
66: } elsif ($$roster{$uname}[$lockedtype] == 1) {
67: push @excludedstudents, $1;
68: }
69: }
70: }
71: my $linefeed = '';
72: my $addresult = '';
73: my $dropresult = '';
74: if ($context eq "updatenow") {
75: $linefeed = "</li>\n<li>";
76: } elsif ($context eq "automated") {
77: $linefeed = "\n";
78: }
79: my $enrollcount = 0;
80: my $dropcount = 0;
81:
82: srand( time() ^ ($$ + ($$ << 15)) ); # Seed rand in case initial passwords have to be generated for new users.
83:
84: # Get mapping of IDs to usernames for current LON-CAPA student enrollment for this class
85: my @LCids = ();
86: my %unameFromLCid = ();
87: foreach my $uname (sort keys %{$currlist}) {
88: my $stuID = $$currlist{$uname}[$stuid];
89: if (!grep/^$stuID$/,@LCids) {
90: push @LCids, $stuID;
91: @{$unameFromLCid{$stuID}} = ();
92: }
93: push @{$unameFromLCid{$stuID}},$uname;
94: }
95:
96: # Get latest institutional enrollment for this class.
97: my %allenrolled = ();
98: my @reg_students = ();
99: my %place = ();
100: $place{'autharg'} = &CL_autharg();
101: $place{'authtype'} = &CL_authtype();
102: $place{'email'} = &CL_email();
103: $place{'enddate'} = &CL_enddate();
104: $place{'firstname'} = &CL_firstname();
105: $place{'generation'} = &CL_generation();
106: $place{'groupID'} = &CL_groupID();
107: $place{'lastname'} = &CL_lastname();
108: $place{'middlename'} = &CL_middlename();
109: $place{'startdate'} = &CL_startdate();
110: $place{'studentID'} = &CL_studentID();
111: my %ucount = ();
112: my %enrollinfo = ();
113: foreach my $class (@{$classesref}) {
114: my %enrolled = ();
115: &parse_classlist($$configvars{'lonDaemons'},$dom,$crs,$class,\%place,$$groupref{$class},\%enrolled);
116: foreach my $uname (sort keys %enrolled ) {
117: if (!grep/^$uname$/,@reg_students) {
118: push @reg_students,$uname;
119: $ucount{$uname} = 0;
120: @{$allenrolled{$uname}} = ();
121: }
122: @{$allenrolled{$uname}[$ucount{$uname}]} = @{$enrolled{$uname}};
123: $ucount{$uname} ++;
124: }
125: }
126:
127: # Check for multiple sections for a single student
128: my @okusers = ();
129: foreach my $uname (@reg_students) {
130: if (grep/^$uname$/,@excludedstudents) {
131: $$logmsg .= "No re-enrollment for $uname - user was previously manually unenrolled and locked.".$linefeed;
132: } elsif (@{$allenrolled{$uname}} > 1) {
133: my @sections = ();
134: my $saved;
135: for (my $i=0; $i<@{$allenrolled{$uname}}; $i++) {
136: my @stuinfo = @{$allenrolled{$uname}[$i]};
137: my $secnum = $stuinfo[ $place{'groupID'} ];
138: unless ($secnum eq '') {
139: unless (grep/^$secnum$/,@sections) {
140: $saved = $i;
141: push @sections,$secnum;
142: }
143: }
144: }
145: if (@sections == 0) {
146: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[0]};
147: push @okusers, $uname;
148: }
149: elsif (@sections == 1) {
150: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[$saved]};
151: push @okusers, $uname;
152: }
153: elsif (@sections > 1) {
154: $$logmsg = "$uname appears in classlists for the more than one section of this course, i.e. in sections: ";
155: foreach (@sections) {
156: $$logmsg .= " $_,";
157: }
158: chop($$logmsg);
159: $$logmsg .= ". Because of this ambiguity, no enrollment action was taken for this student.".$linefeed;
160: }
161: } else {
162: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[0]};
163: push @okusers, $uname;
164: }
165: }
166: # Get mapping of student IDs to usernames for users in institutional data for this class
167: my @allINids = ();
168: my %unameFromINid = ();
169: foreach my $uname (@okusers) {
170: $enrollinfo{$uname}[ $place{'studentID'} ] =~ tr/A-Z/a-z/;
171: my $stuID = $enrollinfo{$uname}[ $place{'studentID'} ];
172: if (grep/^$stuID$/,@allINids) {
173: push @{$unameFromINid{$stuID}},$uname;
174: } else {
175: push @allINids, $stuID;
176: @{$unameFromINid{$stuID}} = $uname;
177: }
178: }
179: # Explicitly allow access to creation/modification of students if called as an automated process.
180: if ($context eq 'automated') {
181: $ENV{'allowed.cst'}='F';
182: }
183:
184: # Compare IDs with existing LON-CAPA enrollment for this class
185: foreach my $uname (@okusers) {
186: unless ($uname eq '') {
187: my %uidhash=&Apache::lonnet::idrget($dom,$uname);
188: my @stuinfo = @{$enrollinfo{$uname}};
189: my $access = '';
190: if (grep/^$uname$/,@localstudents) {
191: # Check for studentID changes
192: if ( ($uidhash{$uname}) && ($uidhash{$uname} !~ /error\:/) ) {
193: unless ( ($uidhash{$uname}) eq ($stuinfo[ $place{studentID} ]) ) {
194: $$logmsg .= "Change in ID for $uname. StudentID in LON-CAPA system is $uidhash{$uname}; StudentID in institutional data is $stuinfo[ $place{studentID} ]".$linefeed;
195: }
196: }
197: # Check for switch from manual to auto
198: unless (($$currlist{$uname}[$type] eq "auto") || ($$currlist{$uname}[$lockedtype] eq "1") || (!$adds) ) {
199: # drop manually added student
200: my $drop_reply = &Apache::lonnet::modifystudent($dom,$uname,'','','',undef,undef,undef,undef,$$currlist{$uname}[$sec],time,undef,undef,undef,undef,'auto','',$cid);
201: # re-enroll as auto student
202: if ($drop_reply !~ /^ok/) {
203: $$logmsg .= "An error occured during the attempt to convert $uname from a manual type to an auto type student - $drop_reply.".$linefeed;
204: } else {
205: # re-enroll as auto student
206: my ($auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc);
207: &prepare_add($authtype,$autharg,$enddate,$startdate,\@stuinfo,\%place,\$dom,\$uname,\$auth,\$authparam,\$first,\$middle,\$last,\$gene,\$usec,\$end,\$start,\$emailaddr,\$pid,\$emailenc);
208: if ($$currlist{$uname}[$sec] ne $usec) {
209: $$logmsg .= "Section for $uname switched from $$currlist{$uname}[$sec] to $usec".$linefeed;
210: }
211: &execute_add($context,'switchtype',$uname,$dom,$auth,$authparam,$first,$middle,$last,$gene,$pid,$usec,$end,$start,$emailenc,$cid,\$addresult,\$enrollcount,$linefeed,$logmsg);
212: }
213: }
214: # Check for section changes
215: if ($$currlist{$uname}[$sec] eq $stuinfo[ $place{groupID} ]) {
216: # Check for access date changes for students with access starting in the future.
217: if ( (grep/^$uname$/,@futurestudents) && ($$currlist{$uname}[$type] eq "auto") && ($adds == 1) ) {
218: my $datechange = &datechange_check($$currlist{$uname}[$cstart],$$currlist{$uname}[$cend],$startdate,$enddate);
219: if ($datechange) {
220: my $modify_access_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$enddate,$startdate,'auto','',$cid);
221: $access = &showaccess($enddate,$startdate);
222: if ($modify_access_result =~ /^ok/) {
223: $$logmsg .= "Change in access dates for $uname.".$access.$linefeed;
224: } else {
225: $$logmsg .= "Error when attempting to change start and/or end access dates for $uname in section: ".$stuinfo[ $place{groupID} ]." -error $modify_access_result".$linefeed;
226: }
227: }
228: }
229: } else {
230: if ( ($$currlist{$uname}[$type] eq "auto") && ($adds == 1) ) {
231: # Delete from roles.db for current section
232: my $expiretime = time;
233: my $uurl='/'.$cid;
234: $uurl=~s/\_/\//g;
235: if ($$currlist{$uname}[$sec]) {
236: $uurl.='/'.$$currlist{$uname}[$sec];
237: }
238: my $expire_role_result = &Apache::lonnet::assignrole($dom,$uname,$uurl,'st',$expiretime);
239: if ($expire_role_result eq 'ok') {
240: my $modify_section_result;
241: if (grep/^$uname$/,@activestudents) {
242: $modify_section_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$$currlist{$uname}[$cend],$$currlist{$uname}[$cstart],'auto','',$cid);
243: } else {
244: $modify_section_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$enddate,$startdate,'auto','',$cid);
245: $access = &showaccess($enddate,$startdate);
246: }
247: if ($modify_section_result =~ /^ok/) {
248: $$logmsg .= "Section for $uname switched from old section: ".$$currlist{$uname}[$sec] ." to new section: ".$stuinfo[ $place{groupID} ].".".$access.$linefeed;
249: } else {
250: $$logmsg .= "Error when attempting section change for $uname from old section ".$$currlist{$uname}[$sec]." to new section: ".$stuinfo[ $place{groupID} ]." -error: $modify_section_result".$linefeed;
251: }
252: } else {
253: $$logmsg .= "Error when attempting to expire role for $uname in old section" .$$currlist{$uname}[$sec]." -error: $expire_role_result".$linefeed;
254: }
255: }
256: }
257: } else {
258: # Check for changed usernames by checking studentIDs
259: if ( ($stuinfo[ $place{studentID} ] ne '') && (grep/^$stuinfo[ $place{studentID} ]$/,@LCids) ) {
260: if (grep/^$$currlist{$uname}[ $place{'studentID'} ]$/,@allINids) {
261: foreach my $match ( @{ $unameFromLCid{ $stuinfo[ $place{studentID} ] } } ) {
262: if (grep/^$match$/,@okusers) {
263: $$logmsg .= "A possible change in username has been detected for a student enrolled in this course. The existing LON-CAPA classlist contains user: $uname and student ID: ".$$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;
264: }
265: }
266: }
267: } elsif ($adds == 1) {
268: my ($auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc);
269: &prepare_add($authtype,$autharg,$enddate,$startdate,\@stuinfo,\%place,\$dom,\$uname,\$auth,\$authparam,\$first,\$middle,\$last,\$gene,\$usec,\$end,\$start,\$emailaddr,\$pid,\$emailenc);
270: # Check for existing account in this LON-CAPA domain for this username
271: my $uhome=&Apache::lonnet::homeserver($uname,$dom);
272: if ($uhome eq 'no_host') { # User does not exist
273: my $create_passwd = 0;
274: my $authchk = '';
275: unless ($authparam eq '') { $authchk = 'ok'; };
276: # If no account exists and passwords should be generated
277: if ($auth eq "internal") {
278: if ($authparam eq '') {
279: ($authparam) = &create_password();
280: if ($authparam eq '') {
281: $authchk = '';
282: } else {
283: $create_passwd = 1;
284: $authchk = 'ok';
285: }
286: }
287: } elsif ($auth eq "localauth") {
288: ($authparam,$create_passwd,$authchk) = &Apache::lonnet::auto_create_password($crs,$dom,$authparam);
289: } elsif ($auth =~ m/^krb/) {
290: if ($authparam eq '') {
291: $$logmsg .= "No Kerberos domain was provided for the new user - $uname, so the new student was not enrolled in the course.".$linefeed;
292: $authchk = 'invalid';
293: }
294: } else {
295: $authchk = 'invalid';
296: $$logmsg .= "An invalid authentication type was provided for the new user - $uname, so the student was not enrolled in the course.".$linefeed;
297: }
298: if ($authchk eq 'ok') {
299: # Now create user.
300: my $reply=&Apache::lonnet::modifystudent($dom,$uname,$pid,$auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,'',undef,$emailaddr,'auto','',$cid);
301: if ($reply eq 'ok') {
302: $access = &showaccess($end,$start);
303: $enrollcount ++;
304: $addresult .= "$first $last ($pid) - $uname enrolled in section/group $usec.".$access.$linefeed;
305: if ($context eq 'automated') {
306: $$logmsg .= "New $dom user $uname added successfully.";
307: }
308: unless ($emailenc eq '') {
309: my %emailHash;
310: $emailHash{'critnotification'} = $emailenc;
311: $emailHash{'notification'} = $emailenc;
312: my $putresult = &Apache::lonnet::put('environment',\%emailHash,$dom,$uname);
313: }
314: if ($create_passwd) {
315: # Send e-mail with initial password to new user at $emailaddr.
316: # If e-mail address is invalid, send password via message to courseowner i
317: # (if automated call) or to user if roster update.
318: if ($emailaddr eq '') {
319: $$newusermsg .= " username: $uname, password: ".$authparam.$linefeed."\n";
320: } else {
321: my $subject = "New LON-CAPA account";
322: 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'};
323: &Apache::lonmsg::sendemail($emailaddr,$subject,$body);
324: }
325: if ($context eq 'automated') {
326: $$logmsg .= " Initial password - - sent to ".$emailaddr.$linefeed;
327: }
328: } else {
329: if ($context eq 'automated') {
330: $$logmsg .= $linefeed;
331: }
332: }
333: } else {
334: $$logmsg .= "An error occurred adding new user $uname - ".$reply.$linefeed;
335: }
336: }
337: } else {
338: &execute_add($context,'newstudent',$uname,$dom,$auth,$authparam,$first,$middle,$last,$gene,$pid,$usec,$end,$start,$emailenc,$cid,\$addresult,\$enrollcount,$linefeed,$logmsg);
339: }
340: }
341: }
342: }
343: }
344: # Do drops
345: if ( ($drops == 1) && (@reg_students > 0) ) {
346: foreach my $uname (@localstudents) {
347: if ($$currlist{$uname}[$type] eq "auto") {
348: my @saved = ();
349: if (!grep/^$uname$/,@reg_students) {
350: # Check for changed usernames by checking studentIDs
351: if (grep/^$$currlist{$uname}[ $stuid ]$/,@allINids) {
352: foreach my $match (@{$unameFromINid{$$currlist{$uname}[ $stuid ]}} ) {
353: $$logmsg .= "A possible change in username has been detected for a student enrolled in this course. The existing LON-CAPA classlist contains user: $uname and student ID: $$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;
354: push @saved,$uname;
355: }
356: } elsif (@saved == 0) {
357: my $drop_reply = &Apache::lonnet::modifystudent($dom,$uname,'','','',undef,undef,undef,undef,$$currlist{$uname}[$sec],time,undef,undef,undef,undef,'auto','',$cid);
358: if ($drop_reply !~ /^ok/) {
359: $$logmsg .= "An error occured during the attempt to expire the $uname from the old section $$currlist{$uname}[$sec] - $drop_reply.".$linefeed;
360: } else {
361: $dropcount ++;
362: my %userenv = &Apache::lonnet::get('environment',['firstname','lastname','id'],$dom,$uname);
363: $dropresult .= $userenv{'firstname'}." ".$userenv{'lastname'}." (".$userenv{'id'}.") - ".$uname." dropped from section/group ".$$currlist{$uname}[$sec].$linefeed;
364: if ($context eq 'automated') {
365: $$logmsg .= "User $uname student role expired from course.".$linefeed;
366: }
367: }
368: }
369: }
370: }
371: }
372: }
373:
374: # Terminated explictly allowed access to student creation/modification
375: if ($context eq 'automated') {
376: delete($ENV{'allowed.cst'});
377: }
378: if ($enrollcount > 0) {
379: if ($context eq "updatenow") {
380: $addresult = substr($addresult,0,rindex($addresult,"<li>"));
381: $addresult = "The following $enrollcount student(s) was/were added to this LON-CAPA course:<br/><ul><li>".$addresult."</li></ul><br/><br/>";
382: } else {
383: $addresult = "The following $enrollcount student(s) was/were added to this LON-CAPA course:\n\n".$addresult."\n\n";
384: }
385: }
386: if ($dropcount > 0) {
387: if ($context eq "updatenow") {
388: $dropresult = substr($dropresult,0,rindex($dropresult,"<li>"));
389: $dropresult = "The following $dropcount student(s) was/were expired from this LON-CAPA course:<br/><ul><li>".$dropresult."</li></ul><br/><br/>";
390: } else {
391: $dropresult = "The following $dropcount student(s) was/were expired from this LON-CAPA course:\n\n".$dropresult."\n\n";
392: }
393: }
394: if ( ($adds) && ($enrollcount == 0) ) {
395: $addresult = "There were no new students to add to the course.";
396: if ($context eq "updatenow") {
397: $addresult .="<br/><br/>";
398: } else {
399: $addresult .="\n";
400: }
401: }
402: if ( ($drops) && ($dropcount == 0) ) {
403: $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.";
404: if ($context eq "updatenow") {
405: $dropresult .="<br/>";
406: } else {
407: $dropresult .="\n";
408: }
409: }
410: my $changecount = $enrollcount + $dropcount;
411: return ($changecount,$addresult.$dropresult);
412: }
413:
414: sub prepare_add {
415: my ($authtype,$autharg,$enddate,$startdate,$stuinfo,$place,$dom,$uname,$auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc) = @_;
416: $$auth = $$stuinfo[ $$place{'authtype'} ];
417: $$authparam = $$stuinfo[ $$place{'autharg'} ];
418: $$first = $$stuinfo[ $$place{'firstname'} ];
419: $$middle = $$stuinfo[ $$place{'middlename'} ];
420: $$last = $$stuinfo[ $$place{'lastname'} ];
421: $$gene = $$stuinfo[ $$place{'generation'} ];
422: $$usec = $$stuinfo[ $$place{'groupID'} ];
423: $$end = $$stuinfo[ $$place{'enddate'} ];
424: $$start = $$stuinfo[ $$place{'startdate'} ];
425: $$emailaddr = $$stuinfo[ $$place{'email'} ];
426: $$pid = $$stuinfo[ $$place{'studentID'} ];
427:
428: # remove non alphanumeric values from section
429: $$usec =~ s/\W//g;
430:
431: unless ($$emailaddr =~/^[^\@]+\@[^\@]+$/) { $$emailaddr =''; }
432: $$emailenc = &HTML::Entities::encode($$emailaddr,'<>&"');
433:
434: # Use course defaults where entry is absent
435: if ( ($$auth eq '') || (!defined($$auth)) ) {
436: $$auth = $authtype;
437: }
438: if ( ($$authparam eq '') || (!defined($$authparam)) ) {
439: $$authparam = $autharg;
440: }
441: if ( ($$end eq '') || (!defined($$end)) ) {
442: $$end = $enddate;
443: }
444: if ( ($$start eq '') || (!defined($$start)) ) {
445: $$start = $startdate;
446: }
447: # Clean up whitespace
448: foreach ($dom,$uname,$pid,$first,$middle,$last,$gene,$usec) {
449: $$_ =~ s/(\s+$|^\s+)//g;
450: }
451: return;
452: }
453:
454: sub execute_add {
455: my ($context,$caller,$uname,$dom,$auth,$authparam,$first,$middle,$last,$gene,$pid,$usec,$end,$start,$emailenc,$cid,$addresult,$enrollcount,$linefeed,$logmsg) = @_;
456: # Get the user's information and authentication
457: my %userenv = &Apache::lonnet::get('environment',['firstname','middlename','lastname','generation','id','critnotification','notification'],$dom,$uname);
458: my ($tmp) = keys(%userenv);
459: if ($tmp =~ /^(con_lost|error)/i) {
460: %userenv = ();
461: }
462: # Get the user's e-mail address
463: if ($userenv{critnotification} =~ m/%40/) {
464: unless ($emailenc eq $userenv{critnotification}) {
465: $$logmsg .= "Current critical notification e-mail
466: - ".$userenv{critnotification}." for $uname is different to e-mail address in institutional classlist - ".$emailenc.$linefeed;
467: }
468: }
469: if ($userenv{notification} =~ m/%40/) {
470: unless ($emailenc eq $userenv{critnotification}) {
471: $$logmsg .= "Current standard notification e-mail
472: - ".$userenv{notification}." for $uname is different to e-mail address in institutional classlist - ".$emailenc.$linefeed;
473: }
474: }
475: my $krbdefdom = '';
476: my $currentauth=&Apache::lonnet::queryauthenticate($uname,$dom);
477: if ($currentauth=~/^(krb[45]):(.*)/) {
478: $currentauth = $1;
479: $krbdefdom = $2;
480: } elsif ($currentauth=~ /^(unix|internal|localauth):/) {
481: $currentauth = $1;
482: } else {
483: $$logmsg .= "Invalid authentication method $currentauth for $uname.".$linefeed;
484: }
485: # Report if authentication methods are different.
486: if ($currentauth ne $auth) {
487: $$logmsg .= "Authentication type mismatch for $uname - '$currentauth' in system, '$auth' based on information in classlist or default for this course.".$linefeed;
488: } elsif ($auth =~ m/^krb/) {
489: if ($krbdefdom ne $authparam) {
490: $$logmsg .= "Kerberos domain mismatch for $uname - '$krbdefdom' in system, '$authparam' based on information in classlist or default for this course.".$linefeed;
491: }
492: }
493:
494: # Check user data
495: if ($first ne $userenv{'firstname'} ||
496: $middle ne $userenv{'middlename'} ||
497: $last ne $userenv{'lastname'} ||
498: $gene ne $userenv{'generation'} ||
499: $pid ne $userenv{'id'} ) {
500: # Make the change(s)
501: my %changeHash;
502: $changeHash{'firstname'} = $first;
503: $changeHash{'middlename'} = $middle;
504: $changeHash{'lastname'} = $last;
505: $changeHash{'generation'} = $gene;
506: $changeHash{'id'} = $pid;
507: my $putresult = &Apache::lonnet::put('environment',\%changeHash,$dom,$uname);
508: if ($putresult eq 'ok') {
509: $$logmsg .= "User information updated for user: $uname prior to enrollment.".$linefeed;
510: } else {
511: $$logmsg .= "There was a problem modifying user data for existing user - $uname -error: $putresult, enrollment will still be attempted.".$linefeed;
512: }
513: }
514:
515: # Assign the role of student in the course.
516: my $classlist_reply = &Apache::lonnet::modify_student_enrollment($dom,$uname,$pid,$first,$middle,$last,$gene,$usec,$end,$start,'auto','',$cid);
517: if ($classlist_reply eq 'ok') {
518: my $access = &showaccess($end,$start);
519: if ($caller eq 'switchtype') {
520: $$logmsg .= "Existing user $uname detected in institutional classlist - switched from 'manual' to 'auto' enrollment in section/group $usec.".$access.$linefeed;
521: } elsif ($caller eq 'newstudent') {
522: $$enrollcount ++;
523: $$addresult .= "$first $last ($pid) - $uname enrolled in section/group $usec.".$access.$linefeed;
524: }
525: if ($context eq 'automated') {
526: $$logmsg .= "Existing $dom user $uname enrolled successfully.".$linefeed;
527: }
528: } else {
529: $$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;
530: }
531: return;
532: }
533:
534: sub datechange_check {
535: my ($oldstart,$oldend,$startdate,$enddate) = @_;
536: my $datechange = 0;
537: unless ($oldstart eq $startdate) {
538: $datechange = 1;
539: }
540: if (!$datechange) {
541: if (!$oldend) {
542: if ($enddate) {
543: $datechange = 1;
544: }
545: } elsif ($oldend ne $enddate) {
546: $datechange = 1;
547: }
548: }
549: return $datechange;
550: }
551:
552: sub showaccess {
553: my ($end,$start) = @_;
554: my $showstart;
555: my $showend;
556: if ( (!$start) || ($start <= time) ) {
557: $showstart = 'immediately';
558: } else {
559: $showstart = &Apache::lonlocal::locallocaltime($start);
560: }
561: if (!$end) {
562: $showend = 'no end date';
563: } else {
564: $showend = &Apache::lonlocal::locallocaltime($end);
565: }
566: my $access_msg = " Access starts: ".$showstart.", ends: ".$showend.".";
567: return $access_msg;
568: }
569:
570: sub parse_classlist {
571: my ($tmpdir,$dom,$crs,$class,$placeref,$groupID,$studentsref) = @_;
572: my $xmlfile = $tmpdir."/tmp/".$dom."_".$crs."_".$class."_classlist.xml";
573: my $uname = '';
574: my @state;
575: my @items = ('autharg','authtype','email','firstname','generation','lastname','middlename','studentID');
576: my $p = HTML::Parser->new
577: (
578: xml_mode => 1,
579: start_h =>
580: [sub {
581: my ($tagname, $attr) = @_;
582: push @state, $tagname;
583: if ("@state" eq "students student") {
584: $uname = $attr->{username};
585: }
586: }, "tagname, attr"],
587: text_h =>
588: [sub {
589: my ($text) = @_;
590: if ("@state" eq "students student groupID") {
591: $$studentsref{$uname}[ $$placeref{'groupID'} ] = $groupID;
592: } elsif ("@state" eq "students student startdate") {
593: my $start = $text;
594: unless ($text eq '') {
595: $start = &process_date($text);
596: }
597: $$studentsref{$uname}[ $$placeref{'startdate'} ] = $start;
598: } elsif ("@state" eq "students student enddate") {
599: my $end = $text;
600: unless ($text eq '') {
601: $end = &process_date($text);
602: }
603: $$studentsref{$uname}[ $$placeref{'enddate'} ] = $end;
604: } else {
605: foreach my $item (@items) {
606: if ("@state" eq "students student $item") {
607: $$studentsref{$uname}[ $$placeref{$item} ] = $text;
608: }
609: }
610: }
611: }, "dtext"],
612: end_h =>
613: [sub {
614: my ($tagname) = @_;
615: pop @state;
616: }, "tagname"],
617: );
618:
619: $p->parse_file($xmlfile);
620: $p->eof;
621: if (-e "$xmlfile") {
622: unlink $xmlfile;
623: }
624: return;
625: }
626:
627: sub process_date {
628: my $timestr = shift;
629: my $timestamp = '';
630: if ($timestr =~ m/^\d{4}:\d{2}:\d{2}/) {
631: my @entries = split/:/,$timestr;
632: for (my $j=0; $j<@entries; $j++) {
633: if ( length($entries[$j]) > 1 ) {
634: $entries[$j] =~ s/^0//;
635: }
636: }
637: $entries[1] = $entries[1] - 1;
638: $timestamp = timelocal($entries[5],$entries[4],$entries[3],$entries[2],$entries[1],$entries[0]);
639: }
640: return $timestamp;
641: }
642:
643: sub create_password {
644: my $passwd = '';
645: 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");
646: for (my $i=0; $i<8; $i++) {
647: my $lettnum = int (rand 2);
648: my $item = '';
649: if ($lettnum) {
650: $item = $letts[int( rand(26) )];
651: my $uppercase = int(rand 2);
652: if ($uppercase) {
653: $item =~ tr/a-z/A-Z/;
654: }
655: } else {
656: $item = int( rand(10) );
657: }
658: $passwd .= $item;
659: }
660: return ($passwd);
661: }
662:
663: sub check_user_status {
664: my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
665: my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
666: my @uroles = keys %userinfo;
667: my $srchstr;
668: my $active_chk = 'none';
669: if (@uroles > 0) {
670: if ( ($role eq 'cc') || ($secgrp eq '') || ( !defined($secgrp) ) ) {
671: $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
672: } else {
673: $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role;
674: }
675: if (grep/^$srchstr$/,@uroles) {
676: my $role_end = 0;
677: my $role_start = 0;
678: $active_chk = 'ok';
679: if ( $userinfo{$srchstr} =~ m/^($role)_(\d+)/ ) {
680: $role_end = $2;
681: if ( $userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/ )
682: {
683: $role_start = $3;
684: }
685: }
686: if ($role_start > 0) {
687: if (time < $role_start) {
688: $active_chk = 'expired';
689: }
690: }
691: if ($role_end > 0) {
692: if (time > $role_end) {
693: $active_chk = 'expired';
694: }
695: }
696: }
697: }
698: return $active_chk;
699: }
700:
701: sub CL_autharg { return 0; }
702: sub CL_authtype { return 1;}
703: sub CL_email { return 2;}
704: sub CL_enddate { return 3;}
705: sub CL_firstname { return 4;}
706: sub CL_generation { return 5;}
707: sub CL_groupID { return 6;}
708: sub CL_lastname { return 7;}
709: sub CL_middlename { return 8;}
710: sub CL_startdate { return 9; }
711: sub CL_studentID { return 10; }
712:
713: 1;
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