1: # functions to glue school database system into Lon-CAPA for
2: # automated enrollment
3: # $Id: localenroll.pm,v 1.8 2004/03/18 01:02:20 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: 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 neither a start date nor an end
109: # date will be set, and the student role will remain active until the role is
110: # explicitly expired using ENRL -> Drop students.
111: # An option to set a default activation date, and a default expiration date will
112: # be added to loncreatecourse.pm, and lonpopulate.pm in a future release.
113: # Once these default parameters are available, they will be used as the start date and
114: # the end date in cases where the <startdate> and <enddate> fields are blank.
115: # If dates are to included in the XML file, they should be in the format
116: # YYYY:MM:DD:HH:MM:SS (: separators required).
117: #
118: # If there were 10 students in fs03nop590001, 5 students in fs03nop59o601,
119: # 8 students in fs03nop590602, and 2 students in fs03ost580002,
120: # then $$reply{'43551dedcd43febmsul1'} = 25
121: #
122: # The purpose of the %reply hash is to detect cases where the institutional
123: # enrollment is 0 (most likely due to a problem with the data source).
124: # In such a case, the LON-CAPA course roster is left unchanged (i.e., no
125: # students are expired, even if automated drops is enabled.
126: #
127: # fetch_enrollment should return a 0 or 1, depending on whether a connection
128: # could be established to the institutional data source.
129: # 0 is returned if no connection could be made.
130: # 1 is returned if connection was successful
131: #
132: # A return of 1 is required for the calling modules to perform LON-CAPA
133: # roster changes based on the contents of the XML classlist file(s), e,g,,
134: # msu_43551dedcd43febmsul1_fs03nop590001_classlist.xml
135: #
136: # XML classlist files are temporary. They are deleted after the enrollment
137: # update process in the calling module is complete.
138: #
139: ################################
140:
141: sub fetch_enrollment {
142: my ($dom,$affiliatesref,$replyref) = @_;
143: foreach my $crs (sort keys %{$affiliatesref}) {
144: $$replyref{$crs} = 0;
145: }
146: my $okflag = 0;
147: return $okflag;
148: }
149:
150: ###############################
151: # sub get_sections
152: #
153: # This is called by the Automated Enrollment Manager interface
154: # (lonpopulate.pm) to create an array of valid sections for
155: # a specific institutional coursecode.
156: # e.g., for MSU coursecode: fs03nop590
157: # ("001","601","602") would be returned
158: #
159: # If the array returned contains at least one element, then
160: # the interface offerred to the course coordinator, lists
161: # official sections and provides a checkbox to use to
162: # select enrollment in the LON-CAPA course from each official section.
163: #
164: # get_sections requires one argument - the institutional coursecode
165: # (in the MSU case this is a concatenation of semester code, department
166: # and course number).
167: #
168: # If there is no access to official course sections at your institution,
169: # then an empty array is returned, and the Automated Enrollment Manager
170: # interface will allow the course coordinator to enter section numbers
171: # in text boxes.
172: #
173: ################################
174:
175: sub get_sections {
176: my $coursecode = shift;
177: my @secs = ();
178: return @secs;
179: }
180:
181: ###############################
182: # sub new_course
183: #
184: # This is called by loncreatecourse.pm and
185: # lonpopulate.pm to record that fact that a new course section
186: # has been added to LON-CAPA that requires access to institutional data
187: # At MSU, this is required, as institutional classlists can only made
188: # available to faculty who are officially assigned to a course.
189: #
190: # The new_course subroutine is used to check that the course owner
191: # of the LON-CAPA course is permitted to access the institutional
192: # classlist for any course sections and crosslisted classes that
193: # the course coordinator wishes to have affiliated with the course.
194: #
195: # If access is permitted, then 'ok' is returned.
196: # The course section or crosslisted course will only be added to the list of
197: # affiliates if 'ok' is returned.
198: #
199: # new_course requires two arguments -
200: # the institutional courseID (in the MSU case this is a concatenation of
201: # semester code, department code, course number, and section number
202: # e.g., fs03nop590001).
203: # the course owner. This is the LON-CAPA username of the course coordinator
204: # assigned to the course when it is first created.
205: #
206: #################################
207:
208: sub new_course {
209: my ($course_id,$owner) = @_;
210: my $outcome = 'ok';
211: return $outcome;
212: }
213:
214: ###############################
215: # sub validate_courseID
216: #
217: # This is called whenever a new course section or crosslisted course
218: # is being affiliated with a LON-CAPA course (i.e., by loncreatecourse.pm
219: # and the Automated Enrollment Manager in lonpopulate.pm).
220: # A check is made that the courseID that the course coordinator wishes
221: # to affiliate with the course is valid according to the institutional
222: # schedule of official classes
223: #
224: # A valid courseID is confirmed by returning 'ok'
225: #
226: # validate_courseID requires one argument -
227: # the institutional courseID (in the MSU case this is a concatenation of
228: # semester code, department code, course number, and section number
229: # e.g., fs03nop590001).
230: #
231: ###############################
232:
233: sub validate_courseID {
234: my $course_id = shift;
235: my $outcome = 'ok';
236: return $outcome;
237: }
238:
239: ###############################
240: # sub create_password
241: #
242: # This is called when the authentication method set for the automated
243: # enrollment process when enrolling new users in the domain is "localauth".
244: # This could be signalled for the specific user by the value of localauth
245: # for the <authtype> tag from the classlist.xml files, or if this is blank,
246: # the default authtype, set by the domain coordinator when creating the course
247: # with loncreatecourse.pm.
248: #
249: # create_password requires one argument -
250: # the value of <autharg> from the classlist.xml files, or if this is blank,
251: # the default autharg, set by the domain coordinator when creating the course
252: # with loncreatecourse.pm.
253: #
254: # Three values are returned:
255: # (a) the value of $authparam - which might have been changed
256: # (b) a flag to indicate whether a password had been created
257: # 0 means no password created
258: # 1 means password created. In this case the calling module - Enrollment.pm
259: # will send the LON-CAPA username and password to the new user's e-mail
260: # (if one was provided), or to the course owner (if one was not provided and
261: # the new user was created by the automated process), or to the active
262: # course coordinator (if the new user was created using the 'update roster
263: # now' interface included in the Automated Enrollment Manager).
264: # (c) a flag to indicate that the authentication method is correct - 'ok'.
265: # If $authchk is not set to 'ok' then account creation and enrollment of the
266: # new user will not occur.
267: #
268: ###############################
269:
270: sub create_password {
271: my $authparam = shift;
272: my $authchk = 'ok';
273: my $create_passwd = 0;
274: return ($authparam,$create_passwd,$authchk);
275: }
276:
277: 1;
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