1: # Automated Enrollment manager
2: # $Id: Enrollment.pm,v 1.17 2004/08/23 17:07:27 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 $currlist;
55: foreach my $uname (keys %{$roster} ) {
56: if ($uname =~ m/^(.+):$dom$/) {
57: if ($$roster{$uname}[$status] eq "Active") {
58: push @activestudents, $1;
59: @{$$currlist{$1}} = @{$$roster{$uname}};
60: push @localstudents, $1;
61: } elsif ( ($$roster{$uname}[$cstart] > time) && ($$roster{$uname}[$cend] > time || $$roster{$uname}[$cend] == 0 || $$roster{$uname}[$cend] eq '') ) {
62: push @futurestudents, $1;
63: @{$$currlist{$1}} = @{$$roster{$uname}};
64: push @localstudents, $1;
65: }
66: }
67: }
68: my $linefeed = '';
69: my $addresult = '';
70: my $dropresult = '';
71: if ($context eq "updatenow") {
72: $linefeed = "</li>\n<li>";
73: } elsif ($context eq "automated") {
74: $linefeed = "\n";
75: }
76: my $enrollcount = 0;
77: my $dropcount = 0;
78:
79: srand( time() ^ ($$ + ($$ << 15)) ); # Seed rand in case initial passwords have to be generated for new users.
80:
81: # Get mapping of IDs to usernames for current LON-CAPA student enrollment for this class
82: my @LCids = ();
83: my %unameFromLCid = ();
84: foreach my $uname (sort keys %{$currlist}) {
85: my $stuID = $$currlist{$uname}[$stuid];
86: if (!grep/^$stuID$/,@LCids) {
87: push @LCids, $stuID;
88: @{$unameFromLCid{$stuID}} = ();
89: }
90: push @{$unameFromLCid{$stuID}},$uname;
91: }
92:
93: # Get latest institutional enrollment for this class.
94: my %allenrolled = ();
95: my @reg_students = ();
96: my %place = ();
97: $place{'autharg'} = &CL_autharg();
98: $place{'authtype'} = &CL_authtype();
99: $place{'email'} = &CL_email();
100: $place{'enddate'} = &CL_enddate();
101: $place{'firstname'} = &CL_firstname();
102: $place{'generation'} = &CL_generation();
103: $place{'groupID'} = &CL_groupID();
104: $place{'lastname'} = &CL_lastname();
105: $place{'middlename'} = &CL_middlename();
106: $place{'startdate'} = &CL_startdate();
107: $place{'studentID'} = &CL_studentID();
108: my %ucount = ();
109: my %enrollinfo = ();
110: foreach my $class (@{$classesref}) {
111: my %enrolled = ();
112: &parse_classlist($$configvars{'lonDaemons'},$dom,$crs,$class,\%place,$$groupref{$class},\%enrolled);
113: foreach my $uname (sort keys %enrolled ) {
114: if (!grep/^$uname$/,@reg_students) {
115: push @reg_students,$uname;
116: $ucount{$uname} = 0;
117: @{$allenrolled{$uname}} = ();
118: }
119: @{$allenrolled{$uname}[$ucount{$uname}]} = @{$enrolled{$uname}};
120: $ucount{$uname} ++;
121: }
122: }
123:
124: # Check for multiple sections for a single student
125: my @okusers = ();
126: foreach my $uname (@reg_students) {
127: if (@{$allenrolled{$uname}} > 1) {
128: my @sections = ();
129: my $saved;
130: for (my $i=0; $i<@{$allenrolled{$uname}}; $i++) {
131: my @stuinfo = @{$allenrolled{$uname}[$i]};
132: my $secnum = $stuinfo[ $place{'groupID'} ];
133: unless ($secnum eq '') {
134: unless (grep/^$secnum$/,@sections) {
135: $saved = $i;
136: push @sections,$secnum;
137: }
138: }
139: }
140: if (@sections == 0) {
141: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[0]};
142: push @okusers, $uname;
143: }
144: elsif (@sections == 1) {
145: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[$saved]};
146: push @okusers, $uname;
147: }
148: elsif (@sections > 1) {
149: $$logmsg = "$uname appears in classlists for the more than one section of this course, i.e. in sections: ";
150: foreach (@sections) {
151: $$logmsg .= " $_,";
152: }
153: chop($$logmsg);
154: $$logmsg .= ". Because of this ambiguity, no enrollment action was taken for this student.".$linefeed;
155: }
156: } else {
157: @{$enrollinfo{$uname}} = @{$allenrolled{$uname}[0]};
158: push @okusers, $uname;
159: }
160: }
161: # Get mapping of student IDs to usernames for users in institutional data for this class
162: my @allINids = ();
163: my %unameFromINid = ();
164: foreach my $uname (@okusers) {
165: $enrollinfo{$uname}[ $place{'studentID'} ] =~ tr/A-Z/a-z/;
166: my $stuID = $enrollinfo{$uname}[ $place{'studentID'} ];
167: if (grep/^$stuID$/,@allINids) {
168: push @{$unameFromINid{$stuID}},$uname;
169: } else {
170: push @allINids, $stuID;
171: @{$unameFromINid{$stuID}} = $uname;
172: }
173: }
174: # Explicitly allow access to creation/modification of students if called as an automated process.
175: if ($context eq 'automated') {
176: $ENV{'allowed.cst'}='F';
177: }
178:
179: # Compare IDs with existing LON-CAPA enrollment for this class
180: foreach my $uname (@okusers) {
181: unless ($uname eq '') {
182: my %uidhash=&Apache::lonnet::idrget($dom,$uname);
183: my @stuinfo = @{$enrollinfo{$uname}};
184: my $access = '';
185: if (grep/^$uname$/,@localstudents) {
186: # Check for studentID changes
187: if ( ($uidhash{$uname}) && ($uidhash{$uname} !~ /error\:/) ) {
188: unless ( ($uidhash{$uname}) eq ($stuinfo[ $place{studentID} ]) ) {
189: $$logmsg .= "Change in ID for $uname. StudentID in LON-CAPA system is $uidhash{$uname}; StudentID in institutional data is $stuinfo[ $place{studentID} ]".$linefeed;
190: }
191: }
192: # Check for switch from manual to auto
193: unless (($$currlist{$uname}[$type] eq "auto") || ($$currlist{$uname}[$lockedtype] eq "1") || (!$adds) ) {
194: # drop manually added student
195: my $drop_reply = &Apache::lonnet::modifystudent($dom,$uname,'','','',undef,undef,undef,undef,$$currlist{$uname}[$sec],time,undef,undef,undef,undef,'auto','',$cid);
196: # re-enroll as auto student
197: if ($drop_reply !~ /^ok/) {
198: $$logmsg .= "An error occured during the attempt to convert $uname from a manual type to an auto type student - $drop_reply.".$linefeed;
199: } else {
200: # re-enroll as auto student
201: my ($auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc);
202: &prepare_add($authtype,$autharg,$enddate,$startdate,\@stuinfo,\%place,\$dom,\$uname,\$auth,\$authparam,\$first,\$middle,\$last,\$gene,\$usec,\$end,\$start,\$emailaddr,\$pid,\$emailenc);
203: if ($$currlist{$uname}[$sec] ne $usec) {
204: $$logmsg .= "Section for $uname switched from $$currlist{$uname}[$sec] to $usec".$linefeed;
205: }
206: &execute_add($context,'switchtype',$uname,$dom,$auth,$authparam,$first,$middle,$last,$gene,$pid,$usec,$end,$start,$emailenc,$cid,\$addresult,\$enrollcount,$linefeed,$logmsg);
207: }
208: }
209: # Check for section changes
210: if ($$currlist{$uname}[$sec] eq $stuinfo[ $place{groupID} ]) {
211: # Check for access date changes for students with access starting in the future.
212: if ( (grep/^$uname$/,@futurestudents) && ($$currlist{$uname}[$type] eq "auto") && ($adds == 1) ) {
213: my $datechange = &datechange_check($$currlist{$uname}[$cstart],$$currlist{$uname}[$cend],$startdate,$enddate);
214: if ($datechange) {
215: my $modify_access_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$enddate,$startdate,'auto','',$cid);
216: $access = &showaccess($enddate,$startdate);
217: if ($modify_access_result =~ /^ok/) {
218: $$logmsg .= "Change in access dates for $uname.".$access.$linefeed;
219: } else {
220: $$logmsg .= "Error when attempting to change start and/or end access dates for $uname in section: ".$stuinfo[ $place{groupID} ]." -error $modify_access_result".$linefeed;
221: }
222: }
223: }
224: } else {
225: if ( ($$currlist{$uname}[$type] eq "auto") && ($adds == 1) ) {
226: # Delete from roles.db for current section
227: my $expiretime = time;
228: my $uurl='/'.$cid;
229: $uurl=~s/\_/\//g;
230: if ($$currlist{$uname}[$sec]) {
231: $uurl.='/'.$$currlist{$uname}[$sec];
232: }
233: my $expire_role_result = &Apache::lonnet::assignrole($dom,$uname,$uurl,'st',$expiretime);
234: if ($expire_role_result eq 'ok') {
235: my $modify_section_result;
236: if (grep/^$uname$/,@activestudents) {
237: $modify_section_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$$currlist{$uname}[$cend],$$currlist{$uname}[$cstart],'auto','',$cid);
238: } else {
239: $modify_section_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$enddate,$startdate,'auto','',$cid);
240: $access = &showaccess($enddate,$startdate);
241: }
242: if ($modify_section_result =~ /^ok/) {
243: $$logmsg .= "Section for $uname switched from old section: ".$$currlist{$uname}[$sec] ." to new section: ".$stuinfo[ $place{groupID} ].".".$access.$linefeed;
244: } else {
245: $$logmsg .= "Error when attempting section change for $uname from old section ".$$currlist{$uname}[$sec]." to new section: ".$stuinfo[ $place{groupID} ]." -error: $modify_section_result".$linefeed;
246: }
247: } else {
248: $$logmsg .= "Error when attempting to expire role for $uname in old section" .$$currlist{$uname}[$sec]." -error: $expire_role_result".$linefeed;
249: }
250: }
251: }
252: } else {
253: # Check for changed usernames by checking studentIDs
254: if ( ($stuinfo[ $place{studentID} ] ne '') && (grep/^$stuinfo[ $place{studentID} ]$/,@LCids) ) {
255: if (grep/^$$currlist{$uname}[ $place{'studentID'} ]$/,@allINids) {
256: foreach my $match ( @{ $unameFromLCid{ $stuinfo[ $place{studentID} ] } } ) {
257: if (grep/^$match$/,@okusers) {
258: $$logmsg .= "A possible change in username has been detected for a student enrolled in this course. The existing LON-CAPA classlist contains user: $uname and student ID: ".$$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;
259: }
260: }
261: }
262: } elsif ($adds == 1) {
263: my ($auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc);
264: &prepare_add($authtype,$autharg,$enddate,$startdate,\@stuinfo,\%place,\$dom,\$uname,\$auth,\$authparam,\$first,\$middle,\$last,\$gene,\$usec,\$end,\$start,\$emailaddr,\$pid,\$emailenc);
265: # Check for existing account in this LON-CAPA domain for this username
266: my $uhome=&Apache::lonnet::homeserver($uname,$dom);
267: if ($uhome eq 'no_host') { # User does not exist
268: my $create_passwd = 0;
269: my $authchk = '';
270: unless ($authparam eq '') { $authchk = 'ok'; };
271: # If no account exists and passwords should be generated
272: if ($auth eq "internal") {
273: if ($authparam eq '') {
274: ($authparam) = &create_password();
275: if ($authparam eq '') {
276: $authchk = '';
277: } else {
278: $create_passwd = 1;
279: $authchk = 'ok';
280: }
281: }
282: } elsif ($auth eq "localauth") {
283: ($authparam,$create_passwd,$authchk) = &Apache::lonnet::auto_create_password($crs,$dom,$authparam);
284: } elsif ($auth =~ m/^krb/) {
285: if ($authparam eq '') {
286: $$logmsg .= "No Kerberos domain was provided for the new user - $uname, so the new student was not enrolled in the course.".$linefeed;
287: $authchk = 'invalid';
288: }
289: } else {
290: $authchk = 'invalid';
291: $$logmsg .= "An invalid authentication type was provided for the new user - $uname, so the student was not enrolled in the course.".$linefeed;
292: }
293: if ($authchk eq 'ok') {
294: # Now create user.
295: my $reply=&Apache::lonnet::modifystudent($dom,$uname,$pid,$auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,'',undef,$emailaddr,'auto','',$cid);
296: if ($reply eq 'ok') {
297: $access = &showaccess($end,$start);
298: $enrollcount ++;
299: $addresult .= "$first $last ($pid) - $uname enrolled in section/group $usec.".$access.$linefeed;
300: if ($context eq 'automated') {
301: $$logmsg .= "New $dom user $uname added successfully.";
302: }
303: unless ($emailenc eq '') {
304: my %emailHash;
305: $emailHash{'critnotification'} = $emailenc;
306: $emailHash{'notification'} = $emailenc;
307: my $putresult = &Apache::lonnet::put('environment',\%emailHash,$dom,$uname);
308: }
309: if ($create_passwd) {
310: # Send e-mail with initial password to new user at $emailaddr.
311: # If e-mail address is invalid, send password via message to courseowner i
312: # (if automated call) or to user if roster update.
313: if ($emailaddr eq '') {
314: $$newusermsg .= " username: $uname, password: ".$authparam.$linefeed."\n";
315: } else {
316: my $subject = "New LON-CAPA account";
317: 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'};
318: &Apache::lonmsg::sendemail($emailaddr,$subject,$body);
319: }
320: if ($context eq 'automated') {
321: $$logmsg .= " Initial password - - sent to ".$emailaddr.$linefeed;
322: }
323: } else {
324: if ($context eq 'automated') {
325: $$logmsg .= $linefeed;
326: }
327: }
328: } else {
329: $$logmsg .= "An error occurred adding new user $uname - ".$reply.$linefeed;
330: }
331: }
332: } else {
333: &execute_add($context,'newstudent',$uname,$dom,$auth,$authparam,$first,$middle,$last,$gene,$pid,$usec,$end,$start,$emailenc,$cid,\$addresult,\$enrollcount,$linefeed,$logmsg);
334: }
335: }
336: }
337: }
338: }
339: # Do drops
340: if ( ($drops == 1) && (@reg_students > 0) ) {
341: foreach my $uname (@localstudents) {
342: if ($$currlist{$uname}[$type] eq "auto") {
343: my @saved = ();
344: if (!grep/^$uname$/,@reg_students) {
345: # Check for changed usernames by checking studentIDs
346: if (grep/^$$currlist{$uname}[ $stuid ]$/,@allINids) {
347: foreach my $match (@{$unameFromINid{$$currlist{$uname}[ $stuid ]}} ) {
348: $$logmsg .= "A possible change in username has been detected for a student enrolled in this course. The existing LON-CAPA classlist contains user: $uname and student ID: $$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;
349: push @saved,$uname;
350: }
351: } elsif (@saved == 0) {
352: my $drop_reply = &Apache::lonnet::modifystudent($dom,$uname,'','','',undef,undef,undef,undef,$$currlist{$uname}[$sec],time,undef,undef,undef,undef,'auto','',$cid);
353: if ($drop_reply !~ /^ok/) {
354: $$logmsg .= "An error occured during the attempt to expire the $uname from the old section $$currlist{$uname}[$sec] - $drop_reply.".$linefeed;
355: } else {
356: $dropcount ++;
357: my %userenv = &Apache::lonnet::get('environment',['firstname','lastname','id'],$dom,$uname);
358: $dropresult .= $userenv{'firstname'}." ".$userenv{'lastname'}." (".$userenv{'id'}.") - ".$uname." dropped from section/group ".$$currlist{$uname}[$sec].$linefeed;
359: if ($context eq 'automated') {
360: $$logmsg .= "User $uname student role expired from course.".$linefeed;
361: }
362: }
363: }
364: }
365: }
366: }
367: }
368:
369: # Terminated explictly allowed access to student creation/modification
370: if ($context eq 'automated') {
371: delete($ENV{'allowed.cst'});
372: }
373: if ($enrollcount > 0) {
374: if ($context eq "updatenow") {
375: $addresult = substr($addresult,0,rindex($addresult,"<li>"));
376: $addresult = "The following $enrollcount student(s) was/were added to this LON-CAPA course:<br/><ul><li>".$addresult."</li></ul><br/><br/>";
377: } else {
378: $addresult = "The following $enrollcount student(s) was/were added to this LON-CAPA course:\n\n".$addresult."\n\n";
379: }
380: }
381: if ($dropcount > 0) {
382: if ($context eq "updatenow") {
383: $dropresult = substr($dropresult,0,rindex($dropresult,"<li>"));
384: $dropresult = "The following $dropcount student(s) was/were expired from this LON-CAPA course:<br/><ul><li>".$dropresult."</li></ul><br/><br/>";
385: } else {
386: $dropresult = "The following $dropcount student(s) was/were expired from this LON-CAPA course:\n\n".$dropresult."\n\n";
387: }
388: }
389: if ( ($adds) && ($enrollcount == 0) ) {
390: $addresult = "There were no new students to add to the course.";
391: if ($context eq "updatenow") {
392: $addresult .="<br/><br/>";
393: } else {
394: $addresult .="\n";
395: }
396: }
397: if ( ($drops) && ($dropcount == 0) ) {
398: $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.";
399: if ($context eq "updatenow") {
400: $dropresult .="<br/>";
401: } else {
402: $dropresult .="\n";
403: }
404: }
405: my $changecount = $enrollcount + $dropcount;
406: return ($changecount,$addresult.$dropresult);
407: }
408:
409: sub prepare_add {
410: my ($authtype,$autharg,$enddate,$startdate,$stuinfo,$place,$dom,$uname,$auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc) = @_;
411: $$auth = $$stuinfo[ $$place{'authtype'} ];
412: $$authparam = $$stuinfo[ $$place{'autharg'} ];
413: $$first = $$stuinfo[ $$place{'firstname'} ];
414: $$middle = $$stuinfo[ $$place{'middlename'} ];
415: $$last = $$stuinfo[ $$place{'lastname'} ];
416: $$gene = $$stuinfo[ $$place{'generation'} ];
417: $$usec = $$stuinfo[ $$place{'groupID'} ];
418: $$end = $$stuinfo[ $$place{'enddate'} ];
419: $$start = $$stuinfo[ $$place{'startdate'} ];
420: $$emailaddr = $$stuinfo[ $$place{'email'} ];
421: $$pid = $$stuinfo[ $$place{'studentID'} ];
422:
423: # remove non alphanumeric values from section
424: $$usec =~ s/\W//g;
425:
426: unless ($$emailaddr =~/^[^\@]+\@[^\@]+$/) { $$emailaddr =''; }
427: $$emailenc = &HTML::Entities::encode($$emailaddr,'<>&"');
428:
429: # Use course defaults where entry is absent
430: if ( ($$auth eq '') || (!defined($$auth)) ) {
431: $$auth = $authtype;
432: }
433: if ( ($$authparam eq '') || (!defined($$authparam)) ) {
434: $$authparam = $autharg;
435: }
436: if ( ($$end eq '') || (!defined($$end)) ) {
437: $$end = $enddate;
438: }
439: if ( ($$start eq '') || (!defined($$start)) ) {
440: $$start = $startdate;
441: }
442: # Clean up whitespace
443: foreach ($dom,$uname,$pid,$first,$middle,$last,$gene,$usec) {
444: $$_ =~ s/(\s+$|^\s+)//g;
445: }
446: return;
447: }
448:
449: sub execute_add {
450: my ($context,$caller,$uname,$dom,$auth,$authparam,$first,$middle,$last,$gene,$pid,$usec,$end,$start,$emailenc,$cid,$addresult,$enrollcount,$linefeed,$logmsg) = @_;
451: # Get the user's information and authentication
452: my %userenv = &Apache::lonnet::get('environment',['firstname','middlename','lastname','generation','id','critnotification','notification'],$dom,$uname);
453: my ($tmp) = keys(%userenv);
454: if ($tmp =~ /^(con_lost|error)/i) {
455: %userenv = ();
456: }
457: # Get the user's e-mail address
458: if ($userenv{critnotification} =~ m/%40/) {
459: unless ($emailenc eq $userenv{critnotification}) {
460: $$logmsg .= "Current critical notification e-mail
461: - ".$userenv{critnotification}." for $uname is different to e-mail address in institutional classlist - ".$emailenc.$linefeed;
462: }
463: }
464: if ($userenv{notification} =~ m/%40/) {
465: unless ($emailenc eq $userenv{critnotification}) {
466: $$logmsg .= "Current standard notification e-mail
467: - ".$userenv{notification}." for $uname is different to e-mail address in institutional classlist - ".$emailenc.$linefeed;
468: }
469: }
470: my $krbdefdom = '';
471: my $currentauth=&Apache::lonnet::queryauthenticate($uname,$dom);
472: if ($currentauth=~/^(krb[45]):(.*)/) {
473: $currentauth = $1;
474: $krbdefdom = $2;
475: } elsif ($currentauth=~ /^(unix|internal|localauth):/) {
476: $currentauth = $1;
477: } else {
478: $$logmsg .= "Invalid authentication method $currentauth for $uname.".$linefeed;
479: }
480: # Report if authentication methods are different.
481: if ($currentauth ne $auth) {
482: $$logmsg .= "Authentication type mismatch for $uname - '$currentauth' in system, '$auth' based on information in classlist or default for this course.".$linefeed;
483: } elsif ($auth =~ m/^krb/) {
484: if ($krbdefdom ne $authparam) {
485: $$logmsg .= "Kerberos domain mismatch for $uname - '$krbdefdom' in system, '$authparam' based on information in classlist or default for this course.".$linefeed;
486: }
487: }
488:
489: # Check user data
490: if ($first ne $userenv{'firstname'} ||
491: $middle ne $userenv{'middlename'} ||
492: $last ne $userenv{'lastname'} ||
493: $gene ne $userenv{'generation'} ||
494: $pid ne $userenv{'id'} ) {
495: # Make the change(s)
496: my %changeHash;
497: $changeHash{'firstname'} = $first;
498: $changeHash{'middlename'} = $middle;
499: $changeHash{'lastname'} = $last;
500: $changeHash{'generation'} = $gene;
501: $changeHash{'id'} = $pid;
502: my $putresult = &Apache::lonnet::put('environment',\%changeHash,$dom,$uname);
503: if ($putresult eq 'ok') {
504: $$logmsg .= "User information updated for user: $uname prior to enrollment.".$linefeed;
505: } else {
506: $$logmsg .= "There was a problem modifying user data for existing user - $uname -error: $putresult, enrollment will still be attempted.".$linefeed;
507: }
508: }
509:
510: # Assign the role of student in the course.
511: my $classlist_reply = &Apache::lonnet::modify_student_enrollment($dom,$uname,$pid,$first,$middle,$last,$gene,$usec,$end,$start,'auto','',$cid);
512: if ($classlist_reply eq 'ok') {
513: my $access = &showaccess($end,$start);
514: if ($caller eq 'switchtype') {
515: $$logmsg .= "Existing user $uname detected in institutional classlist - switched from 'manual' to 'auto' enrollment in section/group $usec.".$access.$linefeed;
516: } elsif ($caller eq 'newstudent') {
517: $$enrollcount ++;
518: $$addresult .= "$first $last ($pid) - $uname enrolled in section/group $usec.".$access.$linefeed;
519: }
520: if ($context eq 'automated') {
521: $$logmsg .= "Existing $dom user $uname enrolled successfully.".$linefeed;
522: }
523: } else {
524: $$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;
525: }
526: return;
527: }
528:
529: sub datechange_check {
530: my ($oldstart,$oldend,$startdate,$enddate) = @_;
531: my $datechange = 0;
532: unless ($oldstart eq $startdate) {
533: $datechange = 1;
534: }
535: if (!$datechange) {
536: if (!$oldend) {
537: if ($enddate) {
538: $datechange = 1;
539: }
540: } elsif ($oldend ne $enddate) {
541: $datechange = 1;
542: }
543: }
544: return $datechange;
545: }
546:
547: sub showaccess {
548: my ($end,$start) = @_;
549: my $showstart;
550: my $showend;
551: if ( (!$start) || ($start <= time) ) {
552: $showstart = 'immediately';
553: } else {
554: $showstart = &Apache::lonlocal::locallocaltime($start);
555: }
556: if (!$end) {
557: $showend = 'no end date';
558: } else {
559: $showend = &Apache::lonlocal::locallocaltime($end);
560: }
561: my $access_msg = " Access starts: ".$showstart.", ends: ".$showend.".";
562: return $access_msg;
563: }
564:
565: sub parse_classlist {
566: my ($tmpdir,$dom,$crs,$class,$placeref,$groupID,$studentsref) = @_;
567: my $xmlfile = $tmpdir."/tmp/".$dom."_".$crs."_".$class."_classlist.xml";
568: my $uname = '';
569: my @state;
570: my @items = ('autharg','authtype','email','firstname','generation','lastname','middlename','studentID');
571: my $p = HTML::Parser->new
572: (
573: xml_mode => 1,
574: start_h =>
575: [sub {
576: my ($tagname, $attr) = @_;
577: push @state, $tagname;
578: if ("@state" eq "students student") {
579: $uname = $attr->{username};
580: }
581: }, "tagname, attr"],
582: text_h =>
583: [sub {
584: my ($text) = @_;
585: if ("@state" eq "students student groupID") {
586: $$studentsref{$uname}[ $$placeref{'groupID'} ] = $groupID;
587: } elsif ("@state" eq "students student startdate") {
588: my $start = $text;
589: unless ($text eq '') {
590: $start = &process_date($text);
591: }
592: $$studentsref{$uname}[ $$placeref{'startdate'} ] = $start;
593: } elsif ("@state" eq "students student enddate") {
594: my $end = $text;
595: unless ($text eq '') {
596: $end = &process_date($text);
597: }
598: $$studentsref{$uname}[ $$placeref{'enddate'} ] = $end;
599: } else {
600: foreach my $item (@items) {
601: if ("@state" eq "students student $item") {
602: $$studentsref{$uname}[ $$placeref{$item} ] = $text;
603: }
604: }
605: }
606: }, "dtext"],
607: end_h =>
608: [sub {
609: my ($tagname) = @_;
610: pop @state;
611: }, "tagname"],
612: );
613:
614: $p->parse_file($xmlfile);
615: $p->eof;
616: if (-e "$xmlfile") {
617: unlink $xmlfile;
618: }
619: return;
620: }
621:
622: sub process_date {
623: my $timestr = shift;
624: my $timestamp = '';
625: if ($timestr =~ m/^\d{4}:\d{2}:\d{2}/) {
626: my @entries = split/:/,$timestr;
627: for (my $j=0; $j<@entries; $j++) {
628: if ( length($entries[$j]) > 1 ) {
629: $entries[$j] =~ s/^0//;
630: }
631: }
632: $entries[1] = $entries[1] - 1;
633: $timestamp = timelocal($entries[5],$entries[4],$entries[3],$entries[2],$entries[1],$entries[0]);
634: }
635: return $timestamp;
636: }
637:
638: sub create_password {
639: my $passwd = '';
640: 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");
641: for (my $i=0; $i<8; $i++) {
642: my $lettnum = int (rand 2);
643: my $item = '';
644: if ($lettnum) {
645: $item = $letts[int( rand(26) )];
646: my $uppercase = int(rand 2);
647: if ($uppercase) {
648: $item =~ tr/a-z/A-Z/;
649: }
650: } else {
651: $item = int( rand(10) );
652: }
653: $passwd .= $item;
654: }
655: return ($passwd);
656: }
657:
658: sub check_user_status {
659: my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
660: my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
661: my @uroles = keys %userinfo;
662: my $srchstr;
663: my $active_chk = 'none';
664: if (@uroles > 0) {
665: if ( ($role eq 'cc') || ($secgrp eq '') || ( !defined($secgrp) ) ) {
666: $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
667: } else {
668: $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role;
669: }
670: if (grep/^$srchstr$/,@uroles) {
671: my $role_end = 0;
672: my $role_start = 0;
673: $active_chk = 'ok';
674: if ( $userinfo{$srchstr} =~ m/^($role)_(\d+)/ ) {
675: $role_end = $2;
676: if ( $userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/ )
677: {
678: $role_start = $3;
679: }
680: }
681: if ($role_start > 0) {
682: if (time < $role_start) {
683: $active_chk = 'expired';
684: }
685: }
686: if ($role_end > 0) {
687: if (time > $role_end) {
688: $active_chk = 'expired';
689: }
690: }
691: }
692: }
693: return $active_chk;
694: }
695:
696: sub CL_autharg { return 0; }
697: sub CL_authtype { return 1;}
698: sub CL_email { return 2;}
699: sub CL_enddate { return 3;}
700: sub CL_firstname { return 4;}
701: sub CL_generation { return 5;}
702: sub CL_groupID { return 6;}
703: sub CL_lastname { return 7;}
704: sub CL_middlename { return 8;}
705: sub CL_startdate { return 9; }
706: sub CL_studentID { return 10; }
707:
708: 1;
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