File:  [LON-CAPA] / loncom / enrollment / localenroll.pm
Revision 1.44: download - view: text, annotated - select for diffs
Fri Mar 1 04:49:04 2013 UTC (11 years, 2 months ago) by raeburn
Branches: MAIN
CVS tags: version_2_11_0_RC1, HEAD
- Course credits for a particular institutional code can be provided as a
  third item returned by localenroll::validate_instcode()
- Course credits can be specified for an official course (or retrieved from
  localenroll::validate_instcode) or an unofficial course as part of a course
  request
- Credits earned for a course can also be different for a specific student
  (e.g., retrieved from institutional classlist data), or specified when
  CC adds a student to a course via the web GUI.

    1: # functions to glue school database system into Lon-CAPA for 
    2: # automated enrollment
    3: # $Id: localenroll.pm,v 1.44 2013/03/01 04:49:04 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:   <credits></credits>
  127:   <inststatus></inststatus>
  128:  </student>
  129:  
  130:  with the following at the top of the file
  131: <?xml version="1.0" encoding="UTF-8"?>
  132: <!DOCTYPE text>
  133: <students>
  134: 
  135:  (all comment - s removed)
  136: 
  137:  and a closing:
  138: </students>
  139: 
  140:  The <startdate> and the <enddate> are the activation date and expiration date
  141:  for this student's role. If they are absent, then the default access start and
  142:  default access end dates are used. The default access dates can be set when 
  143:  the course is created, and can be modified using the Automated Enrollment
  144:  Manager, or via the 'Upload a class list','Enroll a single student' or 
  145:  'Modify student data' utilities in the Enrollment Manager, by checking the 
  146:  'make these dates the default for future enrollment' checkbox. If no default 
  147:  dates have been set, then the tudent role will be active immediately, and will 
  148:  remain active until the role is explicitly expired using ENRL -> Drop students. 
  149:  If dates are to included in the XML file, they should be in the format
  150:  YYYY:MM:DD:HH:MM:SS (: separators required).
  151: 
  152:  The <credits> tag need only be used if the credits earned by the students will 
  153:  be different from the default for the course. The course default is set when the
  154:  course is created and can be modifed by a Domain Coordinator via "View or
  155:  modify a course  or community" on the DC's Main Menu screen.
  156: 
  157:  A value for <inststatus> should be the institutional status used for students,
  158:  and should be one of the types defined in inst_usertypes(). If no status
  159:  types are defined for the domain this tag can be omitted. If Autoupdate.pl
  160:  is enabled in your domain, updates to the institutional status set here
  161:  will be updated by Autoupdate.pl, should changes occur.
  162: 
  163:  If there were 10 students in fs03nop590001, 5 students in fs03nop59o601, 
  164:  8 students in fs03nop590602, and 2 students in fs03ost580002,
  165:  then $$reply{'43551dedcd43febmsul1'} = 25
  166: 
  167:  The purpose of the %reply hash is to detect cases where the institutional 
  168:  enrollment is 0 (most likely due to a problem with the data source).
  169:  In such a case, the LON-CAPA course roster is left unchanged (i.e., no
  170:  students are expired, even if automated drops is enabled.
  171:  
  172:  fetch_enrollment should return a 0 or 1, depending on whether a connection
  173:  could be established to the institutional data source.
  174:  0 is returned if no connection could be made.
  175:  1 is returned if connection was successful
  176: 
  177:  A return of 1 is required for the calling modules to perform LON-CAPA
  178:  roster changes based on the contents of the XML classlist file(s), e,g,,
  179:  msu_43551dedcd43febmsul1_fs03nop590001_classlist.xml
  180: 
  181:  XML classlist files are temporary. They are deleted after the enrollment 
  182:  update process in the calling module is complete.
  183: 
  184: 
  185: =cut
  186: 
  187: sub fetch_enrollment {
  188:     my ($dom,$affiliatesref,$replyref) = @_;
  189:     foreach my $crs (sort keys %{$affiliatesref}) {
  190:         $$replyref{$crs} = 0;
  191:     }
  192:     my $okflag = 0;
  193:     return $okflag;
  194: }
  195: 
  196: =pod
  197: 
  198: =item get_sections()
  199: 
  200:  This is called by the Automated Enrollment Manager interface
  201:  (lonpopulate.pm) to create an array of valid sections for 
  202:  a specific institutional coursecode.
  203:  e.g., for MSU coursecode: fs03nop590
  204:  ("001","601","602") would be returned
  205: 
  206:  If the array returned contains at least one element, then 
  207:  the interface offerred to the course coordinator, lists
  208:  official sections and provides a checkbox to use to
  209:  select enrollment in the LON-CAPA course from each official section.  
  210: 
  211:  get_sections takes two arguments - (a) the institutional coursecode
  212:  (in the MSU case this is a concatenation of semester code, department
  213:  and course number), and (b) the LON-CAPA domain that contains the course. 
  214:  
  215:  If there is no access to official course sections at your institution,
  216:  then an empty array is returned, and the Automated Enrollment Manager
  217:  interface will allow the course coordinator to enter section numbers
  218:  in text boxes.
  219:  
  220: 
  221: 
  222: =cut
  223: 
  224: sub get_sections {
  225:     my ($coursecode,$dom) = @_;
  226:     my @secs = ();
  227:     return @secs;
  228: }
  229: 
  230: =pod
  231: 
  232: =item new_course()
  233: 
  234:  This is called by loncreatecourse.pm and 
  235:  lonpopulate.pm to record that fact that a new course section
  236:  has been added to LON-CAPA that requires access to institutional data
  237:  At MSU, this is required, as institutional classlists can only made
  238:  available to faculty who are officially assigned to a course.
  239:  
  240:  The new_course subroutine is used to check that the course owner
  241:  of the LON-CAPA course is permitted to access the institutional
  242:  classlist for any course sections and crosslisted classes that
  243:  the course coordinator wishes to have affiliated with the course.
  244:  
  245:  If access is permitted, then 'ok' is returned.
  246:  The course section or crosslisted course will only be added to the list of
  247:  affiliates if 'ok' is returned.
  248: 
  249:  new_course takes three required arguments -
  250:  (a) the institutional courseID (in the MSU case this is a concatenation of 
  251:  semester code, department code, course number, and section number
  252:  e.g., fs03nop590001).
  253:  (b) the course owner. This is the LON-CAPA username and domain of the course 
  254:  coordinator assigned to the course when it is first created, in the form
  255:  username:domain
  256:  (c) the LON-CAPA domain that contains the course
  257: 
  258:  new_course also takes a fourth (optional) argument -
  259:  (d) the course co-owners, as a comma-separated list of username:domain for
  260:  any co-owners. 
  261: 
  262: =cut
  263: 
  264: sub new_course  {
  265:     my ($course_id,$owner,$dom,$coowners) = @_;
  266:     my $outcome = 'ok';
  267:     return $outcome;
  268: }
  269: 
  270: =pod
  271: 
  272: =item validate_courseID()
  273: 
  274:  This is called whenever a new course section or crosslisted course
  275:  is being affiliated with a LON-CAPA course (i.e., by loncreatecourse.pm
  276:  and the Automated Enrollment Manager in lonpopulate.pm).
  277:  A check is made that the courseID that the course coordinator wishes
  278:  to affiliate with the course is valid according to the institutional
  279:  schedule of official classes 
  280: 
  281:  A valid courseID is confirmed by returning 'ok'
  282: 
  283:  validate_courseID takes two arguments -
  284:  (a) the institutional courseID (in the MSU case this is a concatenation of
  285:  semester code, department code, course number, and section number
  286:  e.g., fs03nop590001).
  287:  (b) the LON-CAPA domain that contains the course
  288: 
  289: =cut  
  290: 
  291: sub validate_courseID {
  292:     my ($course_id,$dom) = @_;
  293:     my $outcome = 'ok';
  294:     return $outcome;   
  295: }
  296: 
  297: =pod
  298: 
  299: =item validate_instcode()
  300: 
  301: This is called when a request is being made for an official course.
  302: A check is made that the institutional code for which a course is
  303: is being requested is valid according to the institutional
  304: schedule of official classes.
  305: 
  306: If the username of the course owner is provided, a more restrictive
  307: test is used, namely that the requestor is listed as instructor of
  308: record for the course in the institution's course schedule/database.
  309: 
  310: validate_instcode takes three arguments -
  311:  (a) the LON-CAPA domain that will contain the course
  312:  (b) the institutional code (in the MSU case this is a concatenation of
  313:  semester code, department code, and course number, e.g., fs03nop590.
  314:  (c) an optional institutional username for the course owner.
  315: 
  316: An array is returned containing (a) the result of the check for a valid 
  317: instcode, (b) an (optional) course description, and (c) the default credits
  318: earned by students when completing this course. If no institutional credits
  319: value is available, the default credits for the course can be set via the
  320: course request form, or via XML in a batch file, of via the web form used
  321: by the Domain Coordinator to create new courses one at a time.
  322: 
  323: A valid instcode is confirmed by returning 'valid'.
  324: 
  325: If no course description is available, '' should be set as
  326: the value of the second item in the returned array.
  327: 
  328: =cut
  329: 
  330: sub validate_instcode {
  331:     my ($dom,$instcode,$owner) = @_;
  332:     my $outcome = '';
  333:     my $description = '';
  334:     my $credits = '';
  335:     return ($outcome,$description,$credits);
  336: }
  337: 
  338: =pod
  339: 
  340: =item validate_crsreq()
  341: 
  342: This is used to check whether a course request should be processed
  343: automatically, or held in a queue pending administrative action at
  344: the institution.
  345: 
  346: Course requests will trigger this check if the process type has been set 
  347: to 'validate' for the course type (official, unofficial or community) and
  348: the requestor's affiliation.  Whether "validate" is an available option
  349: in the Domain Configuration menu is controlled by auto_courserequest_checks(). 
  350: One scenario is where the request is for an official course, in which case
  351: a check could be made that the requestor is listed as instructor of 
  352: record for the course in the institution's course schedule/database.
  353: 
  354: Other scenarios are possible, and the routine can be customized according
  355: to whatever rules a domain wishes to implement to run validations against
  356: given the data passed in to the routine.
  357: 
  358: validate_crsreq takes six arguments -
  359:  (a) the LON-CAPA domain that will contain the course.
  360:  (b) the username:domain for the course owner.
  361:  (c) the course type (official, unofficial or community)
  362:  (d) a comma-separated list of institutional affiliations of 
  363:      the course owner.
  364:  (e) the institutional code (in the MSU case this is a concatenation of
  365:  semester code, department code, and course number, e.g., fs03nop590.
  366:  (f) a comma-separated list of institutional sections included in
  367:      the course request (only applicable to official courses).
  368: 
  369: A valid courserequest is confirmed by returning 'process'.
  370: The following can be returned: process, rejected, pending, approval or error (with error condition - no :), followed by a : and then an optional message. 
  371: 
  372: (a) process  - the requestor is the recorded instructor - create the course
  373: (b) rejected - the requestor should never be requesting this course, reject the
  374:     request permanently
  375: (c) pending - the requestor is not the recorded instructor, but could
  376:     become so after administrative action at the institution. Put the
  377:     request in a queue and check localenroll:validate_instcode()
  378:     periodically until the status changes to "valid".
  379: (d) approval - the request will be held pending review by a Domain Coordinator.
  380: (e) error (followed by the error condition).
  381: 
  382: =cut
  383: 
  384: sub validate_crsreq {
  385:     my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
  386:     my $outcome = 'approval';
  387:     return $outcome;
  388: }
  389: 
  390: =pod 
  391: 
  392: =item crsreq_checks()
  393: 
  394: This is used to determine whether the "validate" option should appear in the
  395: possible choices for course request processing in the Domain Configuration 
  396: menu for Course Requests. Ultimately it is called by domainprefs.pm (via: 
  397: lonnet -> lond -> localenroll.pm) The domain configuration menu includes 
  398: a table where columns are course type (official, unofficial or community) 
  399: and rows are institutional affiliations (e.g., Faculty, Staff, Student etc.).
  400: 
  401: crsreq_checks() takes three arguments: $dom, $reqtypes, $validations.
  402: $dom - the domain for which validation options are needed.
  403: $reqtypes - ref to an ARRAY of course types (i.e., official, unofficial and community.
  404: $validations - ref to a hash of a hash which will determine whether "validate"
  405: will be one of the possible choices for each course type (outer hash key),
  406: and institutional type (inner hash key).
  407: 
  408: For example to allow validate to be a choice for official classes for Faculty,
  409: req_checks would include:
  410: 
  411: $validations{'official'}{'Faculty'} = 1;
  412: 
  413: This routine is closely tied to validate_crsreq(). "Validate" should not be
  414: a possible choice in the domain configuration menu for a particular course
  415: type/institutional affiliation, unless a corresponding validation code has
  416: been implemented in validate_crsreq().
  417: 
  418: For example at MSU, official courses requested by Faculty will be validated
  419: against the official schedule of classes to check that the requestor is one
  420: of the instructors of record for the course.  In this case validate_crsreq()
  421: includes a call to validate_instcode().
  422: 
  423: =cut
  424: 
  425: sub crsreq_checks {
  426:     my ($dom,$reqtypes,$validations) = @_;
  427:     if ((ref($reqtypes) eq 'ARRAY') && (ref($validations) eq 'HASH')) {
  428:         my (%usertypes,@order);
  429:         if (&inst_usertypes($dom,\%usertypes,\@order) eq 'ok') {
  430:             foreach my $type (@{$reqtypes}) {
  431:                 foreach my $inst_type (@order) {
  432:                     $validations->{$type}{$inst_type} = 0;
  433:                 }
  434:             }
  435:         }
  436:     }
  437:     return 'ok';
  438: }
  439: 
  440: =pod
  441: 
  442: =item create_password()
  443: 
  444:  This is called when the authentication method set for the automated 
  445:  enrollment process when enrolling new users in the domain is "localauth".
  446:  This could be signalled for the specific user by the value of localauth
  447:  for the <authtype> tag from the classlist.xml files, or if this is blank,
  448:  the default authtype, set by the domain coordinator when creating the course
  449:  with loncreatecourse.pm.
  450:   
  451:  create_password takes three arguments -
  452:  (a) $authparam - the value of <autharg> from the classlist.xml files,
  453:  or if this blank, the default autharg, set by the domain coordinator when 
  454:  creating the course with loncreatecourse.pm
  455:  (b) $dom - the domain of the new user.
  456:  (c) $username - the username of the new user (currently not actually used)
  457: 
  458:  Four values are returned:
  459:  (a) the value of $authparam - which might have been changed
  460:  (b) a flag to indicate whether a password had been created
  461:  0 means no password created
  462:  1 means password created.  In this case the calling module - Enrollment.pm
  463:  will send the LON-CAPA username and password to the new user's e-mail
  464:  (if one was provided), or to the course owner (if one was not provided and
  465:  the new user was created by the automated process), or to the active
  466:  course coordinator (if the new user was created using the 'update roster
  467:  now' interface included in the Automated Enrollment Manager).  
  468:  (c) a flag to indicate that the authentication method is correct - 'ok'.
  469:  If $authchk is not set to 'ok' then account creation and enrollment of the 
  470:  new user will not occur.
  471:  (d) if a password was created it can be sent along.  This is the password 
  472:  which will be included in the e-mail sent to the new user, or made available    
  473:  to the course owner/course coordinator if no e-mail address is provided. If
  474:  you do not wish to send a password, but want to give instructions on obtaining
  475:  one, you could set $newpasswd as those instructions. (e.g.,
  476:  $newpasswd = '(Please visit room 212, ACNS Bldg. to obtain your password)';
  477:  The value of $newpasswd is NOT written in the user's LON-CAPA passwd file in
  478:  /home/httpd/lonUsers/$dom/a/b/c/abcuser/passwd, which in the case of a user
  479:  employing localauth will contain 'localauth:$authparam'.  If you need to include
  480:  a parameter in the user's passwd file, you should return it as $authparam,
  481:  i.e., the first of the variables returned by create_password().             
  482: 
  483: 
  484: =cut 
  485: 
  486: sub create_password {
  487:     my ($authparam,$dom,$username) = @_;
  488:     my $authchk = 'ok';
  489:     my $newpasswd = '';
  490:     my $create_passwd = 0;
  491:     return ($authparam,$create_passwd,$authchk,$newpasswd);
  492: }
  493: 
  494: =pod
  495: 
  496: =item instcode_format()
  497: 
  498:  Split coursecodes into constituent parts.   
  499:  e.g., INSTITUTIONALCODE = fs03nop590, LON-CAPA COURSEID: 43551dedcd43febmsul1
  500:  (MSU's course naming scheme - fs03 = Fall semester 2003, nop =
  501:  department name, 590 = course number)
  502: 
  503:  Incoming data:
  504:  $dom (domain)
  505:  $$instcodes{'43551dedcd43febmsul1'} = 'fs03nop590' (hash of courseIDs)
  506:  
  507:  fs03nop590 would be split as follows
  508:  @{$codetitles} = ("year","semester","department","number")
  509:  $$codes{'year'} = '2003'
  510:  $$codes{'semester'} = 'Fall'
  511:  $$codes{'department'} = 'nop'
  512:  $$codes{'number'} = '590'
  513: 
  514:  requires six arguments:
  515:  domain ($dom)
  516:  reference to hash of institutional course IDs ($instcodes)  
  517:  reference to hash of codes ($codes)
  518:  reference to array of titles ($codetitles)
  519:  reference to hash of abbreviations used in categories
  520:  reference to hash of arrays specifying sort order used in category titles   
  521: 
  522:  e.g.,     %{$$cat_titles{'Semester'}} = (
  523:                    fs => 'Fall',
  524:                    ss => 'Spring',
  525:                    us => 'Summer');
  526: 
  527:  e.g., @{$$cat_order{'Semester'}} = ('ss','us','fs'); 
  528:  returns 1 parameter: 'ok' if no processing errors. 
  529: 
  530:  Detailed help:
  531:  http://yourloncapaserver/adm/help/Institutional_Integration_Course_Codes.hlp
  532: 
  533: =cut
  534: 
  535: 
  536: sub instcode_format () {
  537:     my ($dom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;
  538:     my $outcome = 'ok';
  539:     return $outcome;
  540: }
  541: 
  542: =pod
  543: 
  544: =item possible_instcodes()
  545: 
  546: Gather acceptable values for institutional categories to use in course creation request form for official courses.
  547: 
  548:  requires five arguments:
  549: 
  550:  domain ($dom)
  551:  reference to array of titles ($codetitles)
  552:  reference to hash of abbreviations used in categories ($cat_titles).
  553:  reference to hash of arrays specifying sort order used in 
  554:            category titles ($cat_order).
  555:  reference to array which will contain order of component parts used 
  556:            in institutional code ($code_order).
  557: 
  558:  e.g., 
  559:  @{$codetitles} = ('Year','Semester',"Department','Number');
  560: 
  561:  %{$$cat_titles{'Semester'}} = (
  562:                    fs => 'Fall',
  563:                    ss => 'Spring',
  564:                    us => 'Summer');
  565: 
  566:  @{$$cat_order{'Semester'}} = ('ss','us','fs');
  567:  @{$code_order} = ('Semester','Year','Department','Number');
  568: 
  569:  returns 1 parameter: 'ok' if no processing errors.
  570: 
  571: =cut
  572: 
  573: sub possible_instcodes {
  574:     my ($dom,$codetitles,$cat_titles,$cat_order,$code_order) = @_;
  575:     @{$codetitles} = ();
  576:     %{$$cat_titles{'Semester'}} = ();
  577:     @{$$cat_order{'Semester'}} = ('ss','us','fs');
  578:     @{$code_order} = ();
  579:     return 'ok';
  580: }
  581: 
  582: 
  583: =pod
  584: 
  585: =item institutional_photos()
  586: 
  587:  Called when automated enrollment manager is used to update student photos.
  588: 
  589:  Incoming data: six arguments
  590:  (a) $dom (domain)
  591:  (b) $crs (LONCAPA course number)
  592:  (c) $affiliates: a reference to a hash with the keys set to the 
  593:  institutional course IDs for the course.
  594:  (d) $result: a reference to a hash which will return usernames  
  595:      of students (& separated) in following categories (the keys):
  596:      new, update, missing, same, deleted, noid, nouser. The list 
  597:      includes those students for whom the result of the modification 
  598:      process was either addition of a new photo. update of an
  599:      existing photo, photo was found to be missing from institution's
  600:      data store, photo used is same as before, or photo was 
  601:      deleted from storage on LON-CAPA server housing student's
  602:      information, no student/employee ID was available. 
  603:                
  604:  (e) $action: the type of action needed. (e.g., update, delete);
  605:  (f) $students: a reference to a hash with the keys set to student 
  606:  usernames and domains in the form username:domain, and values set
  607:  to the studentID, if action is required for specific students.  
  608: 
  609:  returns 1 parameter: 'ok' if no processing errors.
  610:  other course or student specific values can be stored as values
  611:  in the appropriate referenced hashes. 
  612: 
  613: =cut
  614: 
  615: sub institutional_photos {
  616:     my ($dom,$crs,$affiliates,$result,$action,$students) = @_;
  617:     my $outcome = 'ok';
  618:     return $outcome;
  619: }
  620: 
  621: =pod
  622: 
  623: =item photo_permission()
  624: 
  625:  Incoming data: three arguments
  626:  (a) $dom (domain)
  627:  (b) $perm_reqd: a reference to a a scalar that is either 'yes'
  628:  if a course owner must indicate acceptance of conditions of use,
  629:  'no' otherwise.
  630:  (c) $conditions: the text of the conditions of use.
  631:     
  632:  returns 1 parameter: 'ok' if no processing errors.
  633:  $$perm_reqd is set to 'yes' or 'no'
  634:  $$agreement is set to conditions of use - plain text string
  635:              which will be displayed in a textarea in a web form.
  636: 
  637: 
  638: =cut
  639: 
  640: sub photo_permission {
  641:    my ($dom,$perm_reqd,$conditions) = @_;
  642:    $$perm_reqd = 'no';
  643:    $$conditions = '';
  644:    my $outcome = 'ok';
  645:    return $outcome;
  646: }
  647: 
  648: =pod
  649: 
  650: =item manager_photo_update()
  651: 
  652:  Incoming data: one argument
  653:  (a) $dom (domain)
  654: 
  655:  returns 2 parameters: update (0 or 1), and comment.
  656:  Called by automated enrollment manager, to determine 
  657:  whether "Update Student photos" button will be available,
  658:  and if so, the message (plain text string) that will be displayed
  659:  with the button. 
  660: 
  661: 
  662: =cut
  663:                                                                                         
  664: sub manager_photo_update {
  665:     my ($dom) = @_;
  666:     my $update = 0;
  667:     my $comment = '';
  668:     return ($update,$comment);
  669: }
  670: 
  671: =pod
  672: 
  673: 
  674: =item check_section()
  675: 
  676:  Incoming data: three arguments (+ fourth optional argument)
  677:  (a) $class - institutional class id (coursecode concatanated with section) 
  678:  (b) $owner - course owner (2.2 and later username:domain; pre-2.2 username;
  679:                             2.6 and later - comma-separated list of 
  680:                             username:domain for course owner and co-owners.)
  681:  (c) $dom - domain of course
  682:  (d) $dbh - optional database handle
  683: 
  684:  returns 1 parameter - $sectioncheck ('ok' or other value). 
  685:  Verifies that at least one of the course owner (or co-owners) have access 
  686:  to classlist for specific class according to institution's SIS
  687:  'ok' if access available  
  688: 
  689: 
  690: =cut
  691: 
  692: sub check_section {
  693:     my ($class,$owner,$dom,$dbh) = @_;
  694:     my $sectioncheck = 'ok';
  695:     return $sectioncheck;
  696: }
  697: 
  698: =pod
  699: 
  700: =item instcode_defaults()
  701: 
  702:  Incoming data: three arguments
  703:  (a) $dom - domain
  704:  (b) $defaults - reference to hash which will contain default regular
  705:                  expression matches for different components of an 
  706:                  institutional course code 
  707:  (c) $code_order - reference to array which will contain order of 
  708:                    component parts used in institutional code.  
  709: 
  710:  returns 1 parameter - ('ok' or other value).
  711:  Used to construct a regular expression to be used when searching for
  712:  courses based on fragments of an institutional code.
  713:  $defaults contains defaults to use for each component, and code_order
  714:  contains keys of hash in order in which they are to be concatenated.
  715: 
  716:  e.g., INSTITUTIONALCODE = fs03nop590
  717:  (MSU's course naming scheme - fs  = semester, 03 = year, nop =
  718:  department name, 590 = course number)
  719: 
  720:      %{$defaults} = (
  721:         'Year' => '\d{2}',
  722:         'Semester' => '^[sfu]s', 
  723:         'Department' => '\w{2,3}',
  724:         'Number' => '\d{3,4}\w?',
  725:      );
  726: 
  727:      @{$code_order} = ('Semester','Year','Department','Number');
  728: 
  729:  Detailed help:
  730:  http://yourloncapaserver/adm/help/Institutional_Integration_Course_Codes.hlp
  731: 
  732: =cut
  733: 
  734: sub instcode_defaults {
  735:     my ($dom,$defaults,$code_order) = @_;
  736:     return 'ok';
  737: }
  738: 
  739: 
  740: =pod
  741: 
  742: =item allusers_info()
  743: 
  744:  Incoming data: three arguments
  745:  (a) $dom - domain
  746:  (b) $instusers - reference to hash which will contain hashes, 
  747:                  where keys will be usernames and value will be a 
  748:                  hash of user information. Keys in the inner hash 
  749:                  will be some or all of: lastname,firstname,
  750:                  middlename, generation, id, inststatus - 
  751:                  institutional status (e.g., faculty,staff,student)
  752:                  Values are all scalars except inststatus,
  753:                  which is an array.
  754:  (c) $instids - reference to hash which will contain ID numbers. 
  755:                 keys will be unique IDs (student or faculty/staff ID)
  756:                 values will be either: scalar (username) or an array 
  757:                 if a single ID matches multiple usernames.
  758:  (d) $lc_users - reference to hash containing LON-CAPA usernames in 
  759:                  in domain $dom, as keys. Needed if institutional
  760:                  data source only allows query by username.
  761:  returns 1 parameter - 'ok' if no processing error, or other value 
  762:                        if an error occurred.
  763:  side effects - populates the $instusers and $instids refs to hashes.
  764:                 with information for all users from all available 
  765:                 institutional datafeeds.
  766: 
  767: 
  768: =cut
  769: 
  770: sub allusers_info {
  771:     my ($dom,$instusers,$instids,$lc_users) = @_;
  772:     my $outcome = 'ok';
  773:     return $outcome; 
  774: }
  775: 
  776: =pod
  777: 
  778: =item get_userinfo()
  779: 
  780:  Incoming data: four required arguments and additional optional arguments
  781:  Two modes of operation:
  782:  (1) Retrieves institutional data for a single user either by username
  783:      if $uname is included as second argument, or by ID if $id is 
  784:      included as a third argument.  Either (b) or (c) must be provided.
  785:      (g), (h) and (i) will be undefined.
  786:  (2) Retrieves institutional user data from search of an institutional
  787:      directory based on a search. (g) and (h) are required.
  788:      (i) is optional. (b) and (c) will be undefined. 
  789: 
  790:  (a) $dom - domain
  791:  (b) $uname - username of user
  792:  (c) $id - student/faculty ID of user
  793:  (d) $instusers - reference to hash which will contain info for user
  794:                  as key = value; keys will be one or all of:
  795:                  lastname,firstname,middlename,generation,id,inststatus -
  796:                  institutional status (e.g., faculty,staff,student)
  797:                  Values are all scalars except inststatus,
  798:                  which is an array.
  799:  (e) $instids - reference to hash which will contain ID numbers - 
  800:                  keys will be unique IDs (student or faculty/staff ID)  
  801:                  values will be either: scalar (username) or an array
  802:                  if a single ID matches multiple usernames.
  803:  (f) $types - optional reference to array which contains 
  804:               institutional types to check.
  805:  (g) $srchby - optional if $uname or $id defined, otherwise required.
  806:                Allowed values include: 1. lastfirst, 2. last, 3. uname
  807:                corresponding to searches by 1. lastname,firstname;
  808:                2. lastname; 3. username
  809:  (h) $srchterm - optional if $uname or $id defined, otherwise required
  810:                 String to search for.
  811:  (i) $srchtype - optional. Allowed values: contains, begins (defaults
  812:                 to exact match otherwise).
  813: 
  814:  returns 1 parameter - 'ok' if no processing error, or other value 
  815:                        if an error occurred.
  816:  side effects - populates the $instusers and $instids refs to hashes.
  817:                 with information for specified username, or specified
  818:                 id, if fifth argument provided, from all available, or 
  819:                 specified (e.g., faculty only) institutional datafeeds,
  820:                 if sixth argument provided.
  821: 
  822:  WARNING: You need to set $outcome to 'ok' once you have customized
  823:           this routine to communicate with an instititional 
  824:           directory data source, otherwise institutional directory 
  825:           searches will always be reported as being unavailable
  826:           in domain $dom.
  827: 
  828: =cut
  829: 
  830: sub get_userinfo {
  831:     my ($dom,$uname,$id,$instusers,$instids,$types,
  832:         $srchby,$srchterm,$srchtype) = @_;
  833:     my $outcome = 'unavailable';
  834:     return $outcome;
  835: }
  836: 
  837: =pod
  838: 
  839: =item inst_usertypes() 
  840: 
  841:  Incoming data: three arguments
  842:  (a) $dom - domain
  843:  (b) $usertypes - reference to hash which will contain 
  844:                  key = value, where keys are institution 
  845:                  affiliation types (e.g., Faculty, Student etc.)
  846:                  and values are titles (e.g., Faculty/Academic Staff)
  847:  (c) $order - reference to array which will contain the order in
  848:               which institutional types should be shown
  849:               when displaying data tables (e.g., default quotas    
  850:               or updateable user fields (see domainprefs.pm) 
  851:  returns 1 parameter - 'ok' if no processing error, or other value 
  852:                         if an error occurred.
  853: 
  854: 
  855: =cut
  856: 
  857: sub inst_usertypes {
  858:     my ($dom,$usertypes,$order) = @_;
  859:     @{$order} = ();
  860:     %{$usertypes} = ();
  861:     my $outcome = 'ok';
  862:     return $outcome;
  863: }
  864: 
  865: =pod
  866: 
  867: =item username_rules()
  868: 
  869:  Incoming data: three arguments 
  870:  (a) $dom - domain
  871:  (b) $ruleshash - reference to hash containing rules
  872:                   (a hash of a hash)
  873:                   keys of top level hash are short names  
  874:                    (e.g., netid, noncredit) 
  875:                   for each key, value is a hash
  876:                       desc => long name for rule  
  877:                       rule => description of rule
  878:                       authtype => (krb5,krb4,int, or loc)
  879:                                  authentication type for rule 
  880:                       authparm => authentication parameter for rule
  881:                       authparmfixed => 1 if authparm used when
  882:                           creating user for rule must be authparm  
  883:                       authmsg => Message to display describing 
  884:                                  authentication to use for this rule
  885: 
  886:  (c) $rulesorder - reference to array containing rule names 
  887:                    in order to be displayed
  888: 
  889: 
  890:   returns 'ok' if no processing error.
  891: 
  892: =cut
  893: 
  894: sub username_rules {
  895:     my ($dom,$ruleshash,$rulesorder) = @_;
  896:     my $outcome;
  897:     return $outcome;
  898: }
  899: 
  900: =pod
  901: 
  902: =item id_rules()
  903: 
  904:  Incoming data: three arguments
  905:  (a) $dom - domain
  906:  (b) $ruleshash - reference to hash containing rules
  907:                   (a hash of a hash)
  908:                   keys of top level hash are short names
  909:                    (e.g., netid, noncredit)
  910:                   for each key, value is a hash
  911:                       desc => long name for rule
  912:                       rule => description of rule
  913: 
  914:  (c) $rulesorder - reference to array containing rule names
  915:                    in order to be displayed
  916: 
  917:   returns 'ok' if no processing error.
  918: 
  919: =cut
  920: 
  921: sub id_rules {
  922:     my ($dom,$ruleshash,$rulesorder) = @_;
  923:     my $outcome;
  924:     return $outcome;
  925: }
  926: 
  927: =pod
  928: 
  929: =item selfcreate_rules()
  930: 
  931:  Incoming data: three arguments
  932:  (a) $dom - domain
  933:  (b) $ruleshash - reference to hash containing rules
  934:                   (a hash of a hash)
  935:                   keys of top level hash are short names
  936:                    (e.g., netid)
  937:                   for each key, value is a hash
  938:                       desc => long name for rule
  939:                       rule => description of rule
  940: 
  941:  (c) $rulesorder - reference to array containing rule names
  942:                    in order to be displayed
  943: 
  944:   returns 'ok' if no processing error.
  945: 
  946: 
  947: =cut
  948: 
  949: sub selfcreate_rules {
  950:     my ($dom,$ruleshash,$rulesorder) = @_;
  951:     my $outcome;
  952:     return $outcome;
  953: }
  954: 
  955: =pod
  956: 
  957: =item username_check() 
  958: 
  959:  Incoming data: four arguments
  960:  (a) $dom - domain (scalar) 
  961:  (b) $uname - username to compare against rules (scalar)
  962:  (c) $to_check (reference to array of rule names to check)
  963:  (d) $resultshash (reference to hash of results)
  964:                     hash of results for rule checked
  965:                    - keys are rule names
  966:                    - values are: 1 or 0 (for matched or unmatched) 
  967: 
  968:  returns 'ok' if no processing error.
  969: 
  970: 
  971: =cut
  972: 
  973: sub username_check {
  974:     my ($dom,$uname,$to_check,$resultshash) = @_;
  975:     my $outcome;
  976:     return $outcome; 
  977: }
  978: 
  979: =pod
  980: 
  981: =item id_check()
  982: 
  983:  Incoming data: four arguments
  984:  (a) $dom - domain (scalar)
  985:  (b) $id - ID to compare against rules (scalar)
  986:  (c) $to_check (reference to array of rule names to check)
  987:  (d) $resultshash (reference to hash of results)
  988:                     hash of results for rule checked
  989:                    - keys are rule names
  990:                    - values are: 1 or 0 (for matched or unmatched)
  991: 
  992:  returns 'ok' if no processing error.
  993: 
  994: 
  995: =cut
  996: 
  997: sub id_check {
  998:     my ($dom,$id,$to_check,$resultshash) = @_;
  999:     my $outcome;
 1000:     return $outcome;
 1001: }
 1002: 
 1003: =pod
 1004: 
 1005: =item selfcreate_check()
 1006: 
 1007:  Incoming data: four arguments
 1008:  (a) $dom - domain (scalar)
 1009:  (b) $selfcreatename - e-mail proposed as username (compare against rules - scalar)
 1010:  (c) $to_check (reference to array of rule names to check)
 1011:  (d) $resultshash (reference to hash of results)
 1012:                    hash of results for rule checked
 1013:                    - keys are rule names
 1014:                    - values are: 1 or 0 (for matched or unmatched)
 1015: 
 1016:  returns 'ok' if no processing error.
 1017: 
 1018: 
 1019: =cut
 1020: 
 1021: sub selfcreate_check {
 1022:     my ($dom,$selfcreatename,$to_check,$resultshash) = @_;
 1023:     my $outcome;
 1024:     return $outcome;
 1025: }
 1026: 
 1027: =pod
 1028: 
 1029: =item AUTOLOAD()
 1030: 
 1031:  Incoming data: none
 1032:  Returns ''
 1033: 
 1034:  Prevents errors when undefined subroutines are called in this package
 1035:  Will allow new routines added in the future to be called from lond etc.
 1036:  without the need for customized versions of local*.pm packages to be
 1037:  modified to include the new subroutines immediately.
 1038: 
 1039:  See "Programming Perl" 3rd ed. pp 296-298.   
 1040: 
 1041: =back
 1042: 
 1043: =cut
 1044: 
 1045: sub AUTOLOAD {
 1046:     our $AUTOLOAD;
 1047:     return '';
 1048: }
 1049: 
 1050: 1;

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