1: # functions to glue school database system into Lon-CAPA for
2: # automated enrollment
3: # $Id: localenroll.pm,v 1.6 2003/12/11 15:45:25 albertel 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: package localenroll;
28:
29: use strict;
30:
31: ################################
32: # sub run
33: # set this to return 1 if you want the auto enrollment to run
34: ################################
35:
36: sub run { return 0; }
37:
38: ################################
39: # sub fetch_enrollment
40: #
41: # connects to the institutional classlist data source,
42: # reads classlist data and stores in an XML file
43: # in /home/httpd/perl/tmp/
44: #
45: # classlist files are named as follows:
46: #
47: # DOMAIN_COURSE_INSTITUTIONALCODE_classlist.xml
48: #
49: # e.g., msu_43551dedcd43febmsul1_fs03nop590001_classlist.xml
50: # where DOMAIN = msu COURSE = 43551dedcd43febmsul1
51: # INSTITUTIONALCODE = fs03nop590001
52: # (MSU's course naming scheme - fs03 = Fall semester 2003, nop =
53: # department name, 590 = course number, 001 = section number.
54: #
55: # fetch_enrollment requires three arguments -
56: # $dom - DOMAIN e.g., msu
57: # $affiliatesref - a reference to a hash of arrays that contains LON-CAPA
58: # courses that are to be updated as keys, and institutional coursecodes
59: # contributing enrollment to that LON-CAPA course as elements in each array.
60: # $replyref - a reference to a hash that contains LON-CAPA courses
61: # that are to be updated as keys, and the total enrollment count in all
62: # affiliated sections, as determined from institutional data as hash elements.
63: #
64: # As an example, if fetch_enrollment is called to retrieve institutional
65: # classlists for a single LON-CAPA course - 43551dedcd43febmsul1 which
66: # corresponds to fs03nop590, sections 001, 601 and 602 , and the course
67: # also accommodates enrollment from a crosslisted course in the ost
68: # department - fs03ost580002:
69: #
70: # the affiliatesref would be a reference to %affiliates which would be:
71: #
72: # @{$affiliates{'43551dedcd43febmsul1'}} =
73: # ("fs03nop590001","fs03nop590601","fs03nop590602","fs03ost580002");
74: #
75: # fetch_enrollment would create four files in /home/httpd/perl/tmp/.
76: # msu_43551dedcd43febmsul1_fs03nop590001_classlist.xml
77: # msu_43551dedcd43febmsul1_fs03nop590601_classlist.xml
78: # msu_43551dedcd43febmsul1_fs03nop590602_classlist.xml
79: # msu_43551dedcd43febmsul1_fs03ost580002_classlist.xml
80: #
81: # In each file, student data would be stored in the following format
82: #
83: # <student username="smith">
84: # <autharg>MSU.EDU</autharg>
85: # <authtype>krb4</authtype>
86: # <email>smith@msu.edu</email>
87: # <enddate></enddate>
88: # <firstname>John</firstname>
89: # <generation>II</generation>
90: # <groupID>fs03nop590001</groupID>
91: # <lastname>Smith</lastname>
92: # <middlename>D</middlename>
93: # <startdate></startdate>
94: # <studentID>A12345678</studentID>
95: # </student>
96: #
97: # with the following at the top of the file
98: #<?xml version="1.0" encoding="UTF-8"?>
99: #<!DOCTYPE text>
100: #<students>
101: #
102: # (all comment - #s removed)
103: #
104: # and a closing:
105: #</students>
106: #
107: # The <startdate> and the <enddate> are the activation date and expiration date
108: # for this student's role. If they are absent, then the date set for
109: # first automated enrollment is used as the default activation date, and the
110: # date set for last automated enrollment is used as the default expiration date.
111: # If dates are to included in the XML file, they should be in the format
112: # YYYY:MM:DD:HH:MM:SS (: separators required).
113: #
114: # If there were 10 students in fs03nop590001, 5 students in fs03nop59o601,
115: # 8 students in fs03nop590602, and 2 students in fs03ost580002,
116: # then $$reply{'43551dedcd43febmsul1'} = 25
117: #
118: # The purpose of the %reply hash is to detect cases where the institutional
119: # enrollment is 0 (most likely due to a problem with the data source).
120: # In such a case, the LON-CAPA course roster is left unchanged (i.e., no
121: # students are expired, even if automated drops is enabled.
122: #
123: # fetch_enrollment should return a 0 or 1, depending on whether a connection
124: # could be established to the institutional data source.
125: # 0 is returned if no connection could be made.
126: # 1 is returned if connection was successful
127: #
128: # A return of 1 is required for the calling modules to perform LON-CAPA
129: # roster changes based on the contents of the XML classlist file(s), e,g,,
130: # msu_43551dedcd43febmsul1_fs03nop590001_classlist.xml
131: #
132: # XML classlist files are temporary. They are deleted after the enrollment
133: # update process in the calling module is complete.
134: #
135: ################################
136:
137: sub fetch_enrollment {
138: my ($dom,$affiliatesref,$replyref) = @_;
139: foreach my $crs (sort keys %{$affiliatesref}) {
140: $$replyref{$crs} = 0;
141: }
142: }
143: my $okflag = 0;
144: return $okflag;
145: }
146:
147: ###############################
148: # sub get_sections
149: #
150: # This is called by the Automated Enrollment Manager interface
151: # (lonpopulate.pm) to create an array of valid sections for
152: # a specific institutional coursecode.
153: # e.g., for MSU coursecode: fs03nop590
154: # ("001","601","602") would be returned
155: #
156: # If the array returned contains at least one element, then
157: # the interface offerred to the course coordinator, lists
158: # official sections and provides a checkbox to use to
159: # select enrollment in the LON-CAPA course from each official section.
160: #
161: # get_sections requires one argument - the instituional coursecode
162: # (in the MSU case this is a concatenation of semester code, department
163: # and course number).
164: #
165: # If there is no access to official course sections at your institution,
166: # then an empty array is returned, and the Automated Enrollment Manager
167: # interface will allow the course coordinator to enter section numbers
168: # in text boxes.
169: #
170: ################################
171:
172: sub get_sections {
173: my $coursecode = shift;
174: my @secs = ();
175: return @secs;
176: }
177:
178: ###############################
179: # sub new_course
180: #
181: # This is called by loncreatecourse.pm and
182: # lonpopulate.pm to record that fact that a new course section
183: # has been added to LON-CAPA that requires access to institutional data
184: # At MSU, this is required, as institutional classlists can only made
185: # available to faculty who are officially assigned to a course
186: #
187: # The new_course subroutine is used to check that the course owner
188: # of the LON-CAPA course is permitted to access the institutional
189: # classlist for any course sections and crosslisted classes that
190: # the course coordinator wishes to have affiliated with the course.
191: #
192: # If access is permitted, then 'ok' is returned.
193: # The course section or crosslisted course will only be added to the list of
194: # affiliates if 'ok' is returned.
195: #
196: # new_course requires two arguments -
197: # the institutional courseID (in the MSU case this is a concatenation of
198: # semester code, department code, course number, and section number
199: # e.g., fs03nop590001).
200: # the course owner. This is the LON-CAPA username of the course coordinator
201: # assigned to the course when it is first created.
202: #
203: #################################
204:
205: sub new_course {
206: my ($course_id,$owner) = @_;
207: my $outcome = 'ok';
208: return $outcome;
209: }
210:
211: ###############################
212: # sub validate_courseID
213: #
214: # This is called whenever a new course section or crosslisted course
215: # is being affiliated with a LON-CAPA course (i.e., by loncreatecourse.pm
216: # and the Automated Enrollment Manager in lonpopulate.pm).
217: # A check is made that the courseID that the course coordinator wishes
218: # to affiliate with the course is valid according to the institutional
219: # schedule of official classes
220: #
221: # A valid courseID is confirmed by returning 'ok'
222: #
223: # validate_courseID requires one argument -
224: # the institutional courseID (in the MSU case this is a concatenation of
225: # semester code, department code, course number, and section number
226: # e.g., fs03nop590001).
227: #
228: ###############################
229:
230: sub validate_courseID {
231: my $course_id = shift;
232: my $outcome = 'ok';
233: return $outcome;
234: }
235:
236: ###############################
237: # sub create_password
238: #
239: # This is called when the authentication method set for the automated
240: # enrollment process when enrolling new users in the domain is "local".
241: # This could be signalled for the specific user by the value of local
242: # for the <authtype> tag from the classlist.xml files, or if this is blank,
243: # the default authtype, set by the domain coordinator when creating the course
244: # with loncreatecourse.pm.
245: #
246: # create_password requires one argument -
247: # the value of <autharg> from the classlist.xml files, or if this is blank,
248: # the default autharg, set by the domain coordinator when creating the course
249: # with loncreatecourse.pm.
250: #
251: # Three values are returned:
252: # (a) the value of $authparam - which might have been changed
253: # (b) a flag to indicate whether a password had been created
254: # 0 means no password created
255: # 1 means password created. In this case the calling module - Enrollment.pm
256: # will send the LON-CAPA username and passwod to the new user's e-mail
257: # (if one was provided), or to the course owner (if one was not provided and
258: # the new user was created by the automated process), or to the active
259: # course coordinator (if the new user was created using the 'update roster
260: # now' interface included in the Automated Enrollment Manager.
261: # (c) a flag to indicate that the authentication method is correct - 'ok'.
262: # If $authchk is not set to 'ok' then account creation and enrollment of the
263: # new user will not occur.
264: #
265: ###############################
266:
267: sub create_password {
268: my $authparam = shift;
269: my $authchk = 'ok';
270: my $create_passwd = 0;
271: return ($authparam,$create_passwd,$authchk);
272: }
273:
274: 1;
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