Annotation of modules/gci/localenroll.pm, revision 1.1

1.1     ! gci         1: # functions to glue school database system into Lon-CAPA for 
        !             2: # automated enrollment
        !             3: # $Id: localenroll.pm,v 1.40 2010/07/12 23:55:07 raeburn Exp $
        !             4: #
        !             5: # Copyright Michigan State University Board of Trustees
        !             6: #
        !             7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
        !             8: #
        !             9: # LON-CAPA is free software; you can redistribute it and/or modify
        !            10: # it under the terms of the GNU General Public License as published by
        !            11: # the Free Software Foundation; either version 2 of the License, or
        !            12: # (at your option) any later version.
        !            13: #
        !            14: # LON-CAPA is distributed in the hope that it will be useful,
        !            15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            17: # GNU General Public License for more details.
        !            18: #
        !            19: # You should have received a copy of the GNU General Public License
        !            20: # along with LON-CAPA; if not, write to the Free Software
        !            21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
        !            22: #
        !            23: # /home/httpd/html/adm/gpl.txt
        !            24: #
        !            25: # http://www.lon-capa.org/
        !            26: #
        !            27: 
        !            28: =pod
        !            29: 
        !            30: =head1 NAME
        !            31: 
        !            32: localenroll
        !            33: 
        !            34: =head1 SYNOPSIS
        !            35: 
        !            36: This is part of the LearningOnline Network with CAPA project
        !            37: described at http://www.lon-capa.org.
        !            38: 
        !            39: 
        !            40: =head1 NOTABLE SUBROUTINES
        !            41: 
        !            42: =over
        !            43: 
        !            44: =cut
        !            45: 
        !            46: package localenroll;
        !            47: 
        !            48: use strict;
        !            49: 
        !            50: =pod
        !            51:  
        !            52: =item run()
        !            53:  set this to return 1 if you want the auto enrollment to run
        !            54: 
        !            55:  Beginning with LON-CAPA version 2.4, use of this routine is
        !            56:  deprecated.  Whether or not Autoenroll.pl should run is set
        !            57:  by the Domain Coordinator via "Set domain configuration",
        !            58:  provided in the Domain Management section of the Main menu. 
        !            59: 
        !            60: =cut
        !            61: 
        !            62: sub run() {
        !            63:     my $dom = shift;
        !            64:     return 0;
        !            65: }
        !            66: 
        !            67: 
        !            68: =pod
        !            69: 
        !            70: =item fetch_enrollment()
        !            71: 
        !            72:  connects to the institutional classlist data source,
        !            73:  reads classlist data and stores in an XML file
        !            74:  in /home/httpd/perl/tmp/
        !            75: 
        !            76:  classlist files are named as follows:
        !            77: 
        !            78:  DOMAIN_COURSE_INSTITUTIONALCODE_classlist.xml
        !            79: 
        !            80:  e.g., msu_43551dedcd43febmsul1_fs03nop590001_classlist.xml
        !            81:  where DOMAIN = msu  COURSE = 43551dedcd43febmsul1 
        !            82:  INSTITUTIONALCODE = fs03nop590001 
        !            83:  (MSU's course naming scheme - fs03 = Fall semester 2003, nop =
        !            84:  department name, 590 = course number, 001 = section number.)
        !            85: 
        !            86:  fetch_enrollment requires three arguments -
        !            87:  $dom - DOMAIN e.g., msu
        !            88:  $affiliatesref - a reference to a hash of arrays that contains LON-CAPA 
        !            89:  courses that are to be updated as keys, and institutional coursecodes 
        !            90:  contributing enrollment to that LON-CAPA course as elements in each array.
        !            91:  $replyref - a reference to a hash that contains LON-CAPA courses
        !            92:  that are to be updated as keys, and the total enrollment count in all 
        !            93:  affiliated sections, as determined from institutional data as hash elements. 
        !            94: 
        !            95:  As an example, if fetch_enrollment is called to retrieve institutional
        !            96:  classlists for a single LON-CAPA course - 43551dedcd43febmsul1 which 
        !            97:  corresponds to fs03nop590, sections 001, 601 and 602 , and the course
        !            98:  also accommodates enrollment from a crosslisted course in the ost
        !            99:  department - fs03ost580002:
        !           100: 
        !           101:  the affiliatesref would be a reference to %affiliates which would be:
        !           102: 
        !           103:  @{$affiliates{'43551dedcd43febmsul1'}} =
        !           104:    ("fs03nop590001","fs03nop590601","fs03nop590602","fs03ost580002");
        !           105: 
        !           106:  fetch_enrollment would create four files in /home/httpd/perl/tmp/.
        !           107:  msu_43551dedcd43febmsul1_fs03nop590001_classlist.xml
        !           108:  msu_43551dedcd43febmsul1_fs03nop590601_classlist.xml
        !           109:  msu_43551dedcd43febmsul1_fs03nop590602_classlist.xml
        !           110:  msu_43551dedcd43febmsul1_fs03ost580002_classlist.xml
        !           111: 
        !           112:  In each file, student data would be stored in the following format
        !           113:  
        !           114:  <student username="smith">
        !           115:   <autharg>MSU.EDU</autharg>
        !           116:   <authtype>krb4</authtype>
        !           117:   <email>smith@msu.edu</email>
        !           118:   <enddate></enddate>
        !           119:   <firstname>John</firstname>
        !           120:   <generation>II</generation>
        !           121:   <groupID>fs03nop590001</groupID>
        !           122:   <lastname>Smith</lastname>
        !           123:   <middlename>D</middlename>
        !           124:   <startdate></startdate>
        !           125:   <studentID>A12345678</studentID>
        !           126:  </student>
        !           127:  
        !           128:  with the following at the top of the file
        !           129: <?xml version="1.0" encoding="UTF-8"?>
        !           130: <!DOCTYPE text>
        !           131: <students>
        !           132: 
        !           133:  (all comment - s removed)
        !           134: 
        !           135:  and a closing:
        !           136: </students>
        !           137: 
        !           138:  The <startdate> and the <enddate> are the activation date and expiration date
        !           139:  for this student's role. If they are absent, then the default access start and
        !           140:  default access end dates are used. The default access dates can be set when 
        !           141:  the course is created, and can be modified using the Automated Enrollment
        !           142:  Manager, or via the 'Upload a class list','Enroll a single student' or 
        !           143:  'Modify student data' utilities in the Enrollment Manager, by checking the 
        !           144:  'make these dates the default for future enrollment' checkbox. If no default 
        !           145:  dates have been set, then the tudent role will be active immediately, and will 
        !           146:  remain active until the role is explicitly expired using ENRL -> Drop students. 
        !           147:  If dates are to included in the XML file, they should be in the format
        !           148:  YYYY:MM:DD:HH:MM:SS (: separators required).
        !           149: 
        !           150:  If there were 10 students in fs03nop590001, 5 students in fs03nop59o601, 
        !           151:  8 students in fs03nop590602, and 2 students in fs03ost580002,
        !           152:  then $$reply{'43551dedcd43febmsul1'} = 25
        !           153: 
        !           154:  The purpose of the %reply hash is to detect cases where the institutional 
        !           155:  enrollment is 0 (most likely due to a problem with the data source).
        !           156:  In such a case, the LON-CAPA course roster is left unchanged (i.e., no
        !           157:  students are expired, even if automated drops is enabled.
        !           158:  
        !           159:  fetch_enrollment should return a 0 or 1, depending on whether a connection
        !           160:  could be established to the institutional data source.
        !           161:  0 is returned if no connection could be made.
        !           162:  1 is returned if connection was successful
        !           163: 
        !           164:  A return of 1 is required for the calling modules to perform LON-CAPA
        !           165:  roster changes based on the contents of the XML classlist file(s), e,g,,
        !           166:  msu_43551dedcd43febmsul1_fs03nop590001_classlist.xml
        !           167: 
        !           168:  XML classlist files are temporary. They are deleted after the enrollment 
        !           169:  update process in the calling module is complete.
        !           170: 
        !           171: 
        !           172: =cut
        !           173: 
        !           174: sub fetch_enrollment {
        !           175:     my ($dom,$affiliatesref,$replyref) = @_;
        !           176:     foreach my $crs (sort keys %{$affiliatesref}) {
        !           177:         $$replyref{$crs} = 0;
        !           178:     }
        !           179:     my $okflag = 0;
        !           180:     return $okflag;
        !           181: }
        !           182: 
        !           183: =pod
        !           184: 
        !           185: =item get_sections()
        !           186: 
        !           187:  This is called by the Automated Enrollment Manager interface
        !           188:  (lonpopulate.pm) to create an array of valid sections for 
        !           189:  a specific institutional coursecode.
        !           190:  e.g., for MSU coursecode: fs03nop590
        !           191:  ("001","601","602") would be returned
        !           192: 
        !           193:  If the array returned contains at least one element, then 
        !           194:  the interface offerred to the course coordinator, lists
        !           195:  official sections and provides a checkbox to use to
        !           196:  select enrollment in the LON-CAPA course from each official section.  
        !           197: 
        !           198:  get_sections takes two arguments - (a) the institutional coursecode
        !           199:  (in the MSU case this is a concatenation of semester code, department
        !           200:  and course number), and (b) the LON-CAPA domain that contains the course. 
        !           201:  
        !           202:  If there is no access to official course sections at your institution,
        !           203:  then an empty array is returned, and the Automated Enrollment Manager
        !           204:  interface will allow the course coordinator to enter section numbers
        !           205:  in text boxes.
        !           206:  
        !           207: 
        !           208: 
        !           209: =cut
        !           210: 
        !           211: sub get_sections {
        !           212:     my ($coursecode,$dom) = @_;
        !           213:     my @secs = ();
        !           214:     return @secs;
        !           215: }
        !           216: 
        !           217: =pod
        !           218: 
        !           219: =item new_course()
        !           220: 
        !           221:  This is called by loncreatecourse.pm and 
        !           222:  lonpopulate.pm to record that fact that a new course section
        !           223:  has been added to LON-CAPA that requires access to institutional data
        !           224:  At MSU, this is required, as institutional classlists can only made
        !           225:  available to faculty who are officially assigned to a course.
        !           226:  
        !           227:  The new_course subroutine is used to check that the course owner
        !           228:  of the LON-CAPA course is permitted to access the institutional
        !           229:  classlist for any course sections and crosslisted classes that
        !           230:  the course coordinator wishes to have affiliated with the course.
        !           231:  
        !           232:  If access is permitted, then 'ok' is returned.
        !           233:  The course section or crosslisted course will only be added to the list of
        !           234:  affiliates if 'ok' is returned.
        !           235: 
        !           236:  new_course takes three arguments -
        !           237:  (a) the institutional courseID (in the MSU case this is a concatenation of 
        !           238:  semester code, department code, course number, and section number
        !           239:  e.g., fs03nop590001).
        !           240:  (b) the course owner. This is the LON-CAPA username and domain of the course 
        !           241:  coordinator assigned to the course when it is first created, in the form
        !           242:  username:domain
        !           243:  (c) the LON-CAPA domain that contains the course
        !           244: 
        !           245: =cut
        !           246: 
        !           247: sub new_course  {
        !           248:     my ($course_id,$owner,$dom) = @_;
        !           249:     my $outcome = 'ok';
        !           250:     return $outcome;
        !           251: }
        !           252: 
        !           253: =pod
        !           254: 
        !           255: =item validate_courseID()
        !           256: 
        !           257:  This is called whenever a new course section or crosslisted course
        !           258:  is being affiliated with a LON-CAPA course (i.e., by loncreatecourse.pm
        !           259:  and the Automated Enrollment Manager in lonpopulate.pm).
        !           260:  A check is made that the courseID that the course coordinator wishes
        !           261:  to affiliate with the course is valid according to the institutional
        !           262:  schedule of official classes 
        !           263: 
        !           264:  A valid courseID is confirmed by returning 'ok'
        !           265: 
        !           266:  validate_courseID takes two arguments -
        !           267:  (a) the institutional courseID (in the MSU case this is a concatenation of
        !           268:  semester code, department code, course number, and section number
        !           269:  e.g., fs03nop590001).
        !           270:  (b) the LON-CAPA domain that contains the course
        !           271: 
        !           272: =cut  
        !           273: 
        !           274: sub validate_courseID {
        !           275:     my ($course_id,$dom) = @_;
        !           276:     my $outcome = 'ok';
        !           277:     return $outcome;   
        !           278: }
        !           279: 
        !           280: =pod
        !           281: 
        !           282: =item validate_instcode()
        !           283: 
        !           284: This is called when a request is being made for an official course.
        !           285: A check is made that the institutional code for which a course is
        !           286: is being requested is valid according to the institutional
        !           287: schedule of official classes.
        !           288: 
        !           289: If the username of the course owner is provided, a more restrictive
        !           290: test is used, namely that the requestor is listed as instructor of
        !           291: record for the course in the institution's course schedule/database.
        !           292: 
        !           293: validate_instcode takes three arguments -
        !           294:  (a) the LON-CAPA domain that will contain the course
        !           295:  (b) the institutional code (in the MSU case this is a concatenation of
        !           296:  semester code, department code, and course number, e.g., fs03nop590.
        !           297:  (c) an optional institutional username for the course owner.
        !           298: 
        !           299: An array is returned containing (a) the result of the check for a valid 
        !           300: instcode, and (b) an (optional) course description.   
        !           301: A valid instcode is confirmed by returning 'valid'.
        !           302: If no course description is available, '' should be set as
        !           303: the value of the second item in the returned array.
        !           304: 
        !           305: =cut
        !           306: 
        !           307: sub validate_instcode {
        !           308:     my ($dom,$instcode,$owner) = @_;
        !           309:     my $outcome = '';
        !           310:     my $description = '';
        !           311:     return ($outcome,$description);
        !           312: }
        !           313: 
        !           314: =pod
        !           315: 
        !           316: =item validate_crsreq()
        !           317: 
        !           318: This is used to check whether a course request should be processed
        !           319: automatically, or held in a queue pending administrative action at
        !           320: the institution.
        !           321: 
        !           322: Course requests will trigger this check if the process type has been set 
        !           323: to 'validate' for the course type (official, unofficial or community) and
        !           324: the requestor's affiliation.  Whether "validate" is an available option
        !           325: in the Domain Configuration menu is controlled by auto_courserequest_checks(). 
        !           326: One scenario is where the request is for an official course, in which case
        !           327: a check could be made that the requestor is listed as instructor of 
        !           328: record for the course in the institution's course schedule/database.
        !           329: 
        !           330: Other scenarios are possible, and the routine can be customized according
        !           331: to whatever rules a domain wishes to implement to run validations against
        !           332: given the data passed in to the routine.
        !           333: 
        !           334: validate_crsreq takes six arguments -
        !           335:  (a) the LON-CAPA domain that will contain the course.
        !           336:  (b) the username:domain for the course owner.
        !           337:  (c) the course type (official, unofficial or community)
        !           338:  (d) a comma-separated list of institutional affiliations of 
        !           339:      the course owner.
        !           340:  (e) the institutional code (in the MSU case this is a concatenation of
        !           341:  semester code, department code, and course number, e.g., fs03nop590.
        !           342:  (f) a comma-separated list of institutional sections included in
        !           343:      the course request (only applicable to official courses).
        !           344: 
        !           345: A valid courserequest is confirmed by returning 'process'.
        !           346: The following can be returned: process, rejected, pending, approval or error (with error condition - no :), followed by a : and then an optional message. 
        !           347: 
        !           348: (a) process  - the requestor is the recorded instructor - create the course
        !           349: (b) rejected - the requestor should never be requesting this course, reject the
        !           350:     request permanently
        !           351: (c) pending - the requestor is not the recorded instructor, but could
        !           352:     become so after administrative action at the institution. Put the
        !           353:     request in a queue and check localenroll:validate_instcode()
        !           354:     periodically until the status changes to "valid".
        !           355: (d) approval - the request will be held pending review by a Domain Coordinator.
        !           356: (e) error (followed by the error condition).
        !           357: 
        !           358: =cut
        !           359: 
        !           360: sub validate_crsreq {
        !           361:     my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
        !           362:     my $outcome = 'approval';
        !           363:     return $outcome;
        !           364: }
        !           365: 
        !           366: =pod 
        !           367: 
        !           368: =item crsreq_checks()
        !           369: 
        !           370: This is used to determine whether the "validate" option should appear in the
        !           371: possible choices for course request processing in the Domain Configuration 
        !           372: menu for Course Requests. Ultimately it is called by domainprefs.pm (via: 
        !           373: lonnet -> lond -> localenroll.pm) The domain configuration menu includes 
        !           374: a table where columns are course type (official, unofficial or community) 
        !           375: and rows are institutional affiliations (e.g., Faculty, Staff, Student etc.).
        !           376: 
        !           377: crsreq_checks() takes three arguments: $dom, $reqtyes, $validations.
        !           378: $dom - the domain for which validation options are needed.
        !           379: $reqtypes - ref to an ARRAY of course types (i.e., official, unofficial and community.
        !           380: $validations - ref to a hash of a hash which will determine whether "validate"
        !           381: will be one of the possible choices for each course type (outer hash key),
        !           382: and institutional type (inner hash key).
        !           383: 
        !           384: For example to allow validate to be a choice for official classes for Faculty,
        !           385: req_checks would include:
        !           386: 
        !           387: $validations{'official'}{'Faculty'} = 1;
        !           388: 
        !           389: This routine is closely tied to validate_crsreq(). "Validate" should not be
        !           390: a possible choice in the domain configuration menu for a particular course
        !           391: type/institutional affiliation, unless a corresponding validation code has
        !           392: been implemented in validate_crsreq().
        !           393: 
        !           394: For example at MSU, official courses requested by Faculty will be validated
        !           395: against the official schedule of classes to check that the requestor is one
        !           396: of the instructors of record for the course.  In this case validate_crsreq()
        !           397: includes a call to validate_instcode().
        !           398: 
        !           399: =cut
        !           400: 
        !           401: sub crsreq_checks {
        !           402:     my ($dom,$reqtypes,$validations) = @_;
        !           403:     if ((ref($reqtypes) eq 'ARRAY') && (ref($validations) eq 'HASH')) {
        !           404:         my (%usertypes,@order);
        !           405:         if (&inst_usertypes($dom,\%usertypes,\@order) eq 'ok') {
        !           406:             foreach my $type (@{$reqtypes}) {
        !           407:                 foreach my $inst_type (@order) {
        !           408:                     $validations->{$type}{$inst_type} = 0;
        !           409:                 }
        !           410:             }
        !           411:         }
        !           412:     }
        !           413:     return 'ok';
        !           414: }
        !           415: 
        !           416: =pod
        !           417: 
        !           418: =item create_password()
        !           419: 
        !           420:  This is called when the authentication method set for the automated 
        !           421:  enrollment process when enrolling new users in the domain is "localauth".
        !           422:  This could be signalled for the specific user by the value of localauth
        !           423:  for the <authtype> tag from the classlist.xml files, or if this is blank,
        !           424:  the default authtype, set by the domain coordinator when creating the course
        !           425:  with loncreatecourse.pm.
        !           426:   
        !           427:  create_password takes three arguments -
        !           428:  (a) $authparam - the value of <autharg> from the classlist.xml files,
        !           429:  or if this blank, the default autharg, set by the domain coordinator when 
        !           430:  creating the course with loncreatecourse.pm
        !           431:  (b) $dom - the domain of the new user.
        !           432:  (c) $username - the username of the new user (currently not actually used)
        !           433: 
        !           434:  Four values are returned:
        !           435:  (a) the value of $authparam - which might have been changed
        !           436:  (b) a flag to indicate whether a password had been created
        !           437:  0 means no password created
        !           438:  1 means password created.  In this case the calling module - Enrollment.pm
        !           439:  will send the LON-CAPA username and password to the new user's e-mail
        !           440:  (if one was provided), or to the course owner (if one was not provided and
        !           441:  the new user was created by the automated process), or to the active
        !           442:  course coordinator (if the new user was created using the 'update roster
        !           443:  now' interface included in the Automated Enrollment Manager).  
        !           444:  (c) a flag to indicate that the authentication method is correct - 'ok'.
        !           445:  If $authchk is not set to 'ok' then account creation and enrollment of the 
        !           446:  new user will not occur.
        !           447:  (d) if a password was created it can be sent along.  This is the password 
        !           448:  which will be included in the e-mail sent to the new user, or made available    
        !           449:  to the course owner/course coordinator if no e-mail address is provided. If
        !           450:  you do not wish to send a password, but want to give instructions on obtaining
        !           451:  one, you could set $newpasswd as those instructions. (e.g.,
        !           452:  $newpasswd = '(Please visit room 212, ACNS Bldg. to obtain your password)';
        !           453:  The value of $newpasswd is NOT written in the user's LON-CAPA passwd file in
        !           454:  /home/httpd/lonUsers/$dom/a/b/c/abcuser/passwd, which in the case of a user
        !           455:  employing localauth will contain 'localauth:$authparam'.  If you need to include
        !           456:  a parameter in the user's passwd file, you should return it as $authparam,
        !           457:  i.e., the first of the variables returned by create_password().             
        !           458: 
        !           459: 
        !           460: =cut 
        !           461: 
        !           462: sub create_password {
        !           463:     my ($authparam,$dom,$username) = @_;
        !           464:     my $authchk = 'ok';
        !           465:     my $newpasswd = '';
        !           466:     my $create_passwd = 0;
        !           467:     return ($authparam,$create_passwd,$authchk,$newpasswd);
        !           468: }
        !           469: 
        !           470: =pod
        !           471: 
        !           472: =item instcode_format()
        !           473: 
        !           474:  Split coursecodes into constituent parts.   
        !           475:  e.g., INSTITUTIONALCODE = fs03nop590, LON-CAPA COURSEID: 43551dedcd43febmsul1
        !           476:  (MSU's course naming scheme - fs03 = Fall semester 2003, nop =
        !           477:  department name, 590 = course number)
        !           478: 
        !           479:  Incoming data:
        !           480:  $dom (domain)
        !           481:  $$instcodes{'43551dedcd43febmsul1'} = 'fs03nop590' (hash of courseIDs)
        !           482:  
        !           483:  fs03nop590 would be split as follows
        !           484:  @{$codetitles} = ("year","semester","department","number")
        !           485:  $$codes{'year'} = '2003'
        !           486:  $$codes{'semester'} = 'Fall'
        !           487:  $$codes{'department'} = 'nop'
        !           488:  $$codes{'number'} = '590'
        !           489: 
        !           490:  requires six arguments:
        !           491:  domain ($dom)
        !           492:  reference to hash of institutional course IDs ($instcodes)  
        !           493:  reference to hash of codes ($codes)
        !           494:  reference to array of titles ($codetitles)
        !           495:  reference to hash of abbreviations used in categories
        !           496:  reference to hash of arrays specifying sort order used in category titles   
        !           497: 
        !           498:  e.g.,     %{$$cat_titles{'Semester'}} = (
        !           499:                    fs => 'Fall',
        !           500:                    ss => 'Spring',
        !           501:                    us => 'Summer');
        !           502: 
        !           503:  e.g., @{$$cat_order{'Semester'}} = ('ss','us','fs'); 
        !           504:  returns 1 parameter: 'ok' if no processing errors. 
        !           505: 
        !           506:  Detailed help:
        !           507:  http://yourloncapaserver/adm/help/Institutional_Integration_Course_Codes.hlp
        !           508: 
        !           509: =cut
        !           510: 
        !           511: 
        !           512: sub instcode_format () {
        !           513:     my ($dom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;
        !           514:     my $outcome = 'ok';
        !           515:     return $outcome;
        !           516: }
        !           517: 
        !           518: =pod
        !           519: 
        !           520: =item possible_instcodes()
        !           521: 
        !           522: Gather acceptable values for institutional categories to use in course creation request form for official courses.
        !           523: 
        !           524:  requires five arguments:
        !           525: 
        !           526:  domain ($dom)
        !           527:  reference to array of titles ($codetitles)
        !           528:  reference to hash of abbreviations used in categories ($cat_titles).
        !           529:  reference to hash of arrays specifying sort order used in 
        !           530:            category titles ($cat_order).
        !           531:  reference to array which will contain order of component parts used 
        !           532:            in institutional code ($code_order).
        !           533: 
        !           534:  e.g., 
        !           535:  @{$codetitles} = ('Year','Semester',"Department','Number');
        !           536: 
        !           537:  %{$$cat_titles{'Semester'}} = (
        !           538:                    fs => 'Fall',
        !           539:                    ss => 'Spring',
        !           540:                    us => 'Summer');
        !           541: 
        !           542:  @{$$cat_order{'Semester'}} = ('ss','us','fs');
        !           543:  @{$code_order} = ('Semester','Year','Department','Number');
        !           544: 
        !           545:  returns 1 parameter: 'ok' if no processing errors.
        !           546: 
        !           547: =cut
        !           548: 
        !           549: sub possible_instcodes {
        !           550:     my ($dom,$codetitles,$cat_titles,$cat_order,$code_order) = @_;
        !           551:     @{$codetitles} = ();
        !           552:     %{$$cat_titles{'Semester'}} = ();
        !           553:     @{$$cat_order{'Semester'}} = ('ss','us','fs');
        !           554:     @{$code_order} = ();
        !           555:     return 'ok';
        !           556: }
        !           557: 
        !           558: 
        !           559: =pod
        !           560: 
        !           561: =item institutional_photos()
        !           562: 
        !           563:  Called when automated enrollment manager is used to update student photos.
        !           564: 
        !           565:  Incoming data: six arguments
        !           566:  (a) $dom (domain)
        !           567:  (b) $crs (LONCAPA course number)
        !           568:  (c) $affiliates: a reference to a hash with the keys set to the 
        !           569:  institutional course IDs for the course.
        !           570:  (d) $result: a reference to a hash which will return usernames  
        !           571:      of students (& separated) in following categories (the keys):
        !           572:      new, update, missing, same, deleted, noid, nouser. The list 
        !           573:      includes those students for whom the result of the modification 
        !           574:      process was either addition of a new photo. update of an
        !           575:      existing photo, photo was found to be missing from institution's
        !           576:      data store, photo used is same as before, or photo was 
        !           577:      deleted from storage on LON-CAPA server housing student's
        !           578:      information, no student/employee ID was available. 
        !           579:                
        !           580:  (e) $action: the type of action needed. (e.g., update, delete);
        !           581:  (f) $students: a reference to a hash with the keys set to student 
        !           582:  usernames and domains in the form username:domain, and values set
        !           583:  to the studentID, if action is required for specific students.  
        !           584: 
        !           585:  returns 1 parameter: 'ok' if no processing errors.
        !           586:  other course or student specific values can be stored as values
        !           587:  in the appropriate referenced hashes. 
        !           588: 
        !           589: =cut
        !           590: 
        !           591: sub institutional_photos {
        !           592:     my ($dom,$crs,$affiliates,$result,$action,$students) = @_;
        !           593:     my $outcome = 'ok';
        !           594:     return $outcome;
        !           595: }
        !           596: 
        !           597: =pod
        !           598: 
        !           599: =item photo_permission()
        !           600: 
        !           601:  Incoming data: three arguments
        !           602:  (a) $dom (domain)
        !           603:  (b) $perm_reqd: a reference to a a scalar that is either 'yes'
        !           604:  if a course owner must indicate acceptance of conditions of use,
        !           605:  'no' otherwise.
        !           606:  (c) $conditions: the text of the conditions of use.
        !           607:     
        !           608:  returns 1 parameter: 'ok' if no processing errors.
        !           609:  $$perm_reqd is set to 'yes' or 'no'
        !           610:  $$agreement is set to conditions of use - plain text string
        !           611:              which will be displayed in a textarea in a web form.
        !           612: 
        !           613: 
        !           614: =cut
        !           615: 
        !           616: sub photo_permission {
        !           617:    my ($dom,$perm_reqd,$conditions) = @_;
        !           618:    $$perm_reqd = 'no';
        !           619:    $$conditions = '';
        !           620:    my $outcome = 'ok';
        !           621:    return $outcome;
        !           622: }
        !           623: 
        !           624: =pod
        !           625: 
        !           626: =item manager_photo_update()
        !           627: 
        !           628:  Incoming data: one argument
        !           629:  (a) $dom (domain)
        !           630: 
        !           631:  returns 2 parameters: update (0 or 1), and comment.
        !           632:  Called by automated enrollment manager, to determine 
        !           633:  whether "Update Student photos" button will be available,
        !           634:  and if so, the message (plain text string) that will be displayed
        !           635:  with the button. 
        !           636: 
        !           637: 
        !           638: =cut
        !           639:                                                                                         
        !           640: sub manager_photo_update {
        !           641:     my ($dom) = @_;
        !           642:     my $update = 0;
        !           643:     my $comment = '';
        !           644:     return ($update,$comment);
        !           645: }
        !           646: 
        !           647: =pod
        !           648: 
        !           649: 
        !           650: =item check_section()
        !           651: 
        !           652:  Incoming data: three arguments (+ fourth optional argument)
        !           653:  (a) $class - institutional class id (coursecode concatanated with section) 
        !           654:  (b) $owner - course owner (2.2 and later username:domain; pre-2.2 username;
        !           655:                             2.6 and later - comma-separated list of 
        !           656:                             username:domain for course owner and co-owners.)
        !           657:  (c) $dom - domain of course
        !           658:  (d) $dbh - optional database handle
        !           659: 
        !           660:  returns 1 parameter - $sectioncheck ('ok' or other value). 
        !           661:  Verifies that at least one of the course owner (or co-owners) have access 
        !           662:  to classlist for specific class according to institution's SIS
        !           663:  'ok' if access available  
        !           664: 
        !           665: 
        !           666: =cut
        !           667: 
        !           668: sub check_section {
        !           669:     my ($class,$owner,$dom,$dbh) = @_;
        !           670:     my $sectioncheck = 'ok';
        !           671:     return $sectioncheck;
        !           672: }
        !           673: 
        !           674: =pod
        !           675: 
        !           676: =item instcode_defaults()
        !           677: 
        !           678:  Incoming data: three arguments
        !           679:  (a) $dom - domain
        !           680:  (b) $defaults - reference to hash which will contain default regular
        !           681:                  expression matches for different components of an 
        !           682:                  institutional course code 
        !           683:  (c) $code_order - reference to array which will contain order of 
        !           684:                    component parts used in institutional code.  
        !           685: 
        !           686:  returns 1 parameter - ('ok' or other value).
        !           687:  Used to construct a regular expression to be used when searching for
        !           688:  courses based on fragments of an institutional code.
        !           689:  $defaults contains defaults to use for each component, and code_order
        !           690:  contains keys of hash in order in which they are to be concatenated.
        !           691: 
        !           692:  e.g., INSTITUTIONALCODE = fs03nop590
        !           693:  (MSU's course naming scheme - fs  = semester, 03 = year, nop =
        !           694:  department name, 590 = course number)
        !           695: 
        !           696:      %{$defaults} = (
        !           697:         'Year' => '\d{2}',
        !           698:         'Semester' => '^[sfu]s', 
        !           699:         'Department' => '\w{2,3}',
        !           700:         'Number' => '\d{3,4}\w?',
        !           701:      );
        !           702: 
        !           703:      @{$code_order} = ('Semester','Year','Department','Number');
        !           704: 
        !           705:  Detailed help:
        !           706:  http://yourloncapaserver/adm/help/Institutional_Integration_Course_Codes.hlp
        !           707: 
        !           708: =cut
        !           709: 
        !           710: sub instcode_defaults {
        !           711:     my ($dom,$defaults,$code_order) = @_;
        !           712:     return 'ok';
        !           713: }
        !           714: 
        !           715: 
        !           716: =pod
        !           717: 
        !           718: =item allusers_info()
        !           719: 
        !           720:  Incoming data: three arguments
        !           721:  (a) $dom - domain
        !           722:  (b) $instusers - reference to hash which will contain hashes, 
        !           723:                  where keys will be usernames and value will be a 
        !           724:                  hash of user information. Keys in the inner hash 
        !           725:                  will be some or all of: lastname,firstname,
        !           726:                  middlename, generation, id, inststatus - 
        !           727:                  institutional status (e.g., faculty,staff,student)
        !           728:                  Values are all scalars except inststatus,
        !           729:                  which is an array.
        !           730:  (c) $instids - reference to hash which will contain ID numbers. 
        !           731:                 keys will be unique IDs (student or faculty/staff ID)
        !           732:                 values will be either: scalar (username) or an array 
        !           733:                 if a single ID matches multiple usernames.
        !           734:  returns 1 parameter - 'ok' if no processing error, or other value 
        !           735:                        if an error occurred.
        !           736:  side effects - populates the $instusers and $instids refs to hashes.
        !           737:                 with information for all users from all available 
        !           738:                 institutional datafeeds.
        !           739: 
        !           740: 
        !           741: =cut
        !           742: 
        !           743: sub allusers_info {
        !           744:     my ($dom,$instusers,$instids) = @_;
        !           745:     my $outcome = 'ok';
        !           746:     return $outcome; 
        !           747: }
        !           748: 
        !           749: =pod
        !           750: 
        !           751: =item get_userinfo()
        !           752: 
        !           753:  Incoming data: four required arguments and additional optional arguments
        !           754:  Two modes of operation:
        !           755:  (1) Retrieves institutional data for a single user either by username
        !           756:      if $uname is included as second argument, or by ID if $id is 
        !           757:      included as a third argument.  Either (b) or (c) must be provided.
        !           758:      (g), (h) and (i) will be undefined.
        !           759:  (2) Retrieves institutional user data from search of an institutional
        !           760:      directory based on a search. (g) and (h) are required.
        !           761:      (i) is optional. (b) and (c) will be undefined. 
        !           762: 
        !           763:  (a) $dom - domain
        !           764:  (b) $uname - username of user
        !           765:  (c) $id - student/faculty ID of user
        !           766:  (d) $instusers - reference to hash which will contain info for user
        !           767:                  as key = value; keys will be one or all of:
        !           768:                  lastname,firstname,middlename,generation,id,inststatus -
        !           769:                  institutional status (e.g., faculty,staff,student)
        !           770:                  Values are all scalars except inststatus,
        !           771:                  which is an array.
        !           772:  (e) $instids - reference to hash which will contain ID numbers - 
        !           773:                  keys will be unique IDs (student or faculty/staff ID)  
        !           774:                  values will be either: scalar (username) or an array
        !           775:                  if a single ID matches multiple usernames.
        !           776:  (f) $types - optional reference to array which contains 
        !           777:               institutional types to check.
        !           778:  (g) $srchby - optional if $uname or $id defined, otherwise required.
        !           779:                Allowed values include: 1. lastfirst, 2. last, 3. uname
        !           780:                corresponding to searches by 1. lastname,firstname;
        !           781:                2. lastname; 3. username
        !           782:  (h) $srchterm - optional if $uname or $id defined, otherwise required
        !           783:                 String to search for.
        !           784:  (i) $srchtype - optional. Allowed values: contains, begins (defaults
        !           785:                 to exact match otherwise).
        !           786: 
        !           787:  returns 1 parameter - 'ok' if no processing error, or other value 
        !           788:                        if an error occurred.
        !           789:  side effects - populates the $instusers and $instids refs to hashes.
        !           790:                 with information for specified username, or specified
        !           791:                 id, if fifth argument provided, from all available, or 
        !           792:                 specified (e.g., faculty only) institutional datafeeds,
        !           793:                 if sixth argument provided.
        !           794: 
        !           795:  WARNING: You need to set $outcome to 'ok' once you have customized
        !           796:           this routine to communicate with an instititional 
        !           797:           directory data source, otherwise institutional directory 
        !           798:           searches will always be reported as being unavailable
        !           799:           in domain $dom.
        !           800: 
        !           801: =cut
        !           802: 
        !           803: sub get_userinfo {
        !           804:     my ($dom,$uname,$id,$instusers,$instids,$types,
        !           805:         $srchby,$srchterm,$srchtype) = @_;
        !           806:     my $outcome = 'unavailable';
        !           807:     return $outcome;
        !           808: }
        !           809: 
        !           810: =pod
        !           811: 
        !           812: =item inst_usertypes() 
        !           813: 
        !           814:  Incoming data: three arguments
        !           815:  (a) $dom - domain
        !           816:  (b) $usertypes - reference to hash which will contain 
        !           817:                  key = value, where keys are institution 
        !           818:                  affiliation types (e.g., Faculty, Student etc.)
        !           819:                  and values are titles (e.g., Faculty/Academic Staff)
        !           820:  (c) $order - reference to array which will contain the order in
        !           821:               which institutional types should be shown
        !           822:               when displaying data tables (e.g., default quotas    
        !           823:               or updateable user fields (see domainprefs.pm) 
        !           824:  returns 1 parameter - 'ok' if no processing error, or other value 
        !           825:                         if an error occurred.
        !           826: 
        !           827: 
        !           828: =cut
        !           829: 
        !           830: sub inst_usertypes {
        !           831:     my ($dom,$usertypes,$order) = @_;
        !           832:     if ($dom eq 'gci') {
        !           833:         %{$usertypes} = (
        !           834:                       Faculty => 'Faculty',
        !           835:                       Postdoc => 'Postdoctoral Researcher',
        !           836:                       Graduate => 'Graduate Student',
        !           837:                       Undergraduate => 'Undergraduate',
        !           838:                      );
        !           839:         @{$order}=('Faculty','Postdoc','Graduate','Undergraduate');
        !           840:     } elsif ($dom eq 'gcitest') {
        !           841:         %{$usertypes} = (
        !           842:                       Student => 'Student',
        !           843:                         );
        !           844:         @{$order}=('Student');
        !           845:     }
        !           846:     my $outcome = 'ok';
        !           847:     return $outcome;
        !           848: }
        !           849: 
        !           850: =pod
        !           851: 
        !           852: =item username_rules()
        !           853: 
        !           854:  Incoming data: three arguments 
        !           855:  (a) $dom - domain
        !           856:  (b) $ruleshash - reference to hash containing rules
        !           857:                   (a hash of a hash)
        !           858:                   keys of top level hash are short names  
        !           859:                    (e.g., netid, noncredit) 
        !           860:                   for each key, value is a hash
        !           861:                       desc => long name for rule  
        !           862:                       rule => description of rule
        !           863:                       authtype => (krb5,krb4,int, or loc)
        !           864:                                  authentication type for rule 
        !           865:                       authparm => authentication parameter for rule
        !           866:                       authparmfixed => 1 if authparm used when
        !           867:                           creating user for rule must be authparm  
        !           868:                       authmsg => Message to display describing 
        !           869:                                  authentication to use for this rule
        !           870: 
        !           871:  (c) $rulesorder - reference to array containing rule names 
        !           872:                    in order to be displayed
        !           873: 
        !           874: 
        !           875:   returns 'ok' if no processing error.
        !           876: 
        !           877: =cut
        !           878: 
        !           879: sub username_rules {
        !           880:     my ($dom,$ruleshash,$rulesorder) = @_;
        !           881:     %{$ruleshash} = (
        !           882:                   email => {
        !           883:                               name     => 'E-mail address',
        !           884:                               desc     => 'Valid e-mail address',
        !           885:                               authtype => 'int',
        !           886:                               authparm => '',
        !           887:                               authparmfixed => '',
        !           888:                               authmsg       => 'A new user with a username which is a valid e-mail address will log-in using the e-mail address as username, and the password they have chosen.',
        !           889:                            },
        !           890:                  );
        !           891:     @{$rulesorder} = ('email');
        !           892:     return 'ok';
        !           893: }
        !           894: 
        !           895: =pod
        !           896: 
        !           897: =item id_rules()
        !           898: 
        !           899:  Incoming data: three arguments
        !           900:  (a) $dom - domain
        !           901:  (b) $ruleshash - reference to hash containing rules
        !           902:                   (a hash of a hash)
        !           903:                   keys of top level hash are short names
        !           904:                    (e.g., netid, noncredit)
        !           905:                   for each key, value is a hash
        !           906:                       desc => long name for rule
        !           907:                       rule => description of rule
        !           908: 
        !           909:  (c) $rulesorder - reference to array containing rule names
        !           910:                    in order to be displayed
        !           911: 
        !           912:   returns 'ok' if no processing error.
        !           913: 
        !           914: =cut
        !           915: 
        !           916: sub id_rules {
        !           917:     my ($dom,$ruleshash,$rulesorder) = @_;
        !           918:     my $outcome;
        !           919:     return $outcome;
        !           920: }
        !           921: 
        !           922: =pod
        !           923: 
        !           924: =item selfcreate_rules()
        !           925: 
        !           926:  Incoming data: three arguments
        !           927:  (a) $dom - domain
        !           928:  (b) $ruleshash - reference to hash containing rules
        !           929:                   (a hash of a hash)
        !           930:                   keys of top level hash are short names
        !           931:                    (e.g., netid)
        !           932:                   for each key, value is a hash
        !           933:                       desc => long name for rule
        !           934:                       rule => description of rule
        !           935: 
        !           936:  (c) $rulesorder - reference to array containing rule names
        !           937:                    in order to be displayed
        !           938: 
        !           939:   returns 'ok' if no processing error.
        !           940: 
        !           941: 
        !           942: =cut
        !           943: 
        !           944: sub selfcreate_rules {
        !           945:     my ($dom,$ruleshash,$rulesorder) = @_;
        !           946:     my $outcome;
        !           947:     return $outcome;
        !           948: }
        !           949: 
        !           950: =pod
        !           951: 
        !           952: =item username_check() 
        !           953: 
        !           954:  Incoming data: four arguments
        !           955:  (a) $dom - domain (scalar) 
        !           956:  (b) $uname - username to compare against rules (scalar)
        !           957:  (c) $to_check (reference to array of rule names to check)
        !           958:  (d) $resultshash (reference to hash of results)
        !           959:                     hash of results for rule checked
        !           960:                    - keys are rule names
        !           961:                    - values are: 1 or 0 (for matched or unmatched) 
        !           962: 
        !           963:  returns 'ok' if no processing error.
        !           964: 
        !           965: 
        !           966: =cut
        !           967: 
        !           968: sub username_check {
        !           969:     my ($dom,$uname,$to_check,$resultshash) = @_;
        !           970:     my $outcome;
        !           971:     if (ref($to_check) eq 'ARRAY') {
        !           972:         foreach my $item (@{$to_check}) {
        !           973:             if ($item eq 'email') {
        !           974:                 if ($uname =~ /^[^\@]+\@[^\@]+$/) {
        !           975:                     $resultshash->{$item} = 1;
        !           976:                 } else {
        !           977:                     $resultshash->{$item} = 0;
        !           978:                 }
        !           979:             }
        !           980:         }
        !           981:         $outcome = 'ok';
        !           982:     }
        !           983:     return $outcome;
        !           984: }
        !           985: 
        !           986: =pod
        !           987: 
        !           988: =item id_check()
        !           989: 
        !           990:  Incoming data: four arguments
        !           991:  (a) $dom - domain (scalar)
        !           992:  (b) $id - ID to compare against rules (scalar)
        !           993:  (c) $to_check (reference to array of rule names to check)
        !           994:  (d) $resultshash (reference to hash of results)
        !           995:                     hash of results for rule checked
        !           996:                    - keys are rule names
        !           997:                    - values are: 1 or 0 (for matched or unmatched)
        !           998: 
        !           999:  returns 'ok' if no processing error.
        !          1000: 
        !          1001: 
        !          1002: =cut
        !          1003: 
        !          1004: sub id_check {
        !          1005:     my ($dom,$id,$to_check,$resultshash) = @_;
        !          1006:     my $outcome;
        !          1007:     return $outcome;
        !          1008: }
        !          1009: 
        !          1010: =pod
        !          1011: 
        !          1012: =item selfcreate_check()
        !          1013: 
        !          1014:  Incoming data: four arguments
        !          1015:  (a) $dom - domain (scalar)
        !          1016:  (b) $selfcreatename - e-mail proposed as username (compare against rules - scalar)
        !          1017:  (c) $to_check (reference to array of rule names to check)
        !          1018:  (d) $resultshash (reference to hash of results)
        !          1019:                    hash of results for rule checked
        !          1020:                    - keys are rule names
        !          1021:                    - values are: 1 or 0 (for matched or unmatched)
        !          1022: 
        !          1023:  returns 'ok' if no processing error.
        !          1024: 
        !          1025: 
        !          1026: =cut
        !          1027: 
        !          1028: sub selfcreate_check {
        !          1029:     my ($dom,$selfcreatename,$to_check,$resultshash) = @_;
        !          1030:     my $outcome;
        !          1031:     return $outcome;
        !          1032: }
        !          1033: 
        !          1034: =pod
        !          1035: 
        !          1036: =item AUTOLOAD()
        !          1037: 
        !          1038:  Incoming data: none
        !          1039:  Returns ''
        !          1040: 
        !          1041:  Prevents errors when undefined subroutines are called in this package
        !          1042:  Will allow new routines added in the future to be called from lond etc.
        !          1043:  without the need for customized versions of local*.pm packages to be
        !          1044:  modified to include the new subroutines immediately.
        !          1045: 
        !          1046:  See "Programming Perl" 3rd ed. pp 296-298.   
        !          1047: 
        !          1048: =back
        !          1049: 
        !          1050: =cut
        !          1051: 
        !          1052: sub AUTOLOAD {
        !          1053:     our $AUTOLOAD;
        !          1054:     return '';
        !          1055: }
        !          1056: 
        !          1057: 1;

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