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#!/usr/bin/perl -w
#
# provision_canvas.pl, DESCRIPTION
#
# Copyright (C) 2017 Tom Jordan
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# $Id:$
# Tom Jordan <tom.jordan@wisc.edu>
use vars qw/$VERSION $FILE/;
($VERSION) = q$Revision: 1.1 $ =~ /([\d.]+)/;
($FILE) = q$RCSfile: provision_canvas.pl,v $ =~ /^[^:]+: ([^\$]+),v $/;
use strict;
use REST::Client;
use JSON;
use Net::LDAP;
use Data::Dumper;
my $debug = 1;
my $canvas_url = "https://tier.instructure.com";
my $canvas_token = "10675~b1IIAPh31TCIBMRsmEqLUL436htu5Q7CP8JPMhRncRpKVh9uWYIDxbkCNWN7vSKD";
my $header;
$header->{'Authorization'} = "Bearer: $canvas_token";
$header->{'Content-type'} = "application/json";
my $client = REST::Client->new({
host => $canvas_url,
timeout => 10
});
# disable certificate checking
$client->getUseragent()->ssl_opts(verify_hostname => 0);
$client->getUseragent()->ssl_opts(SSL_verify_mode => "SSL_VERIFY_NONE");
my $ldap_host = "127.0.0.1";
my $ldap_admin = "cn=admin,dc=example,dc=edu";
my $ldap_password = "password";
my $course_groups_dn = "ou=groups,dc=example,dcu=edu";
my $ldap = Net::LDAP->new( $ldap_host, port => 389) or die $@;
my $mesg = $ldap->bind($ldap_admin, password => $ldap_password);
die "unable to bind to ldap: $@\n" if (!(defined($mesg)));
my $course_groups = get_course_groups($course_groups_dn);
foreach my $course_group (@$course_groups) {
print "About to process enrollments for $course_group\n" if $debug;
process_enrollments($course_group);
}
sub get_course_groups {
my $groups_dn = shift;
print "Fetching Course Groups\n" if $debug;
my @course_groups;
push @course_groups,"cn=app:canvas:users,ou=groups,dc=example,dc=edu";
push @course_groups,"cn=app:canvas:class_cs251,ou=groups,dc=example,dc=edu";
push @course_groups,"cn=app:canvas:class_cs252,ou=groups,dc=example,dc=edu";
print "Done fetching course groups\n" if $debug;
return \@course_groups;
}
sub process_enrollments {
my $course_group = shift;
print "processing enrollments for course group: $course_group\n" if $debug;
# TODO: Add the course to canvas
my $course_id = add_course_to_canvas($course_group);
print "COURSE_ID: $course_id\n" if $debug;
# TODO: Get current members
print "searching ldap for group: $course_group\n" if $debug;
$mesg = $ldap->search(base => $course_group,
filter => '(objectclass=*)');
my $entry = $mesg->entry(0);
my @members = $entry->get_value('member');
# TODO: Get user details for each member
foreach my $member (@members) {
# TODO: Validate whether or not the user needs to be added to canvas
my $member_details = get_member_details($member);
add_user_to_canvas($member_details);
# TODO: Add the users to the course
add_user_to_course($member_details,$course_group,$course_id);
}
}
sub get_member_details {
my $member_dn = shift;
print "Getting member details for $member_dn\n" if $debug;
$mesg = $ldap->search(base => $member_dn,
filter => '(objectclass=*)');
my $entry = $mesg->entry(0);
my $member_details;
# TODO: Get name and uid, and set a default password
my $uid = $entry->get_value('uid');
$member_details->{user}->{name} = $entry->get_value('cn');
$member_details->{user}->{skip_registration} = "true";
$member_details->{pseudonym}->{unique_id} = $uid."\@example.edu";
$member_details->{pseudonym}->{password} = "password";
print "Dumping user details..\n" if $debug;
print Dumper $member_details if $debug;
return $member_details;
}
sub add_user_to_canvas {
my $member_details = shift;
my $json_user = to_json($member_details);
print "Adding user: $json_user\n" if $debug;
$client->POST("/api/v1/accounts/1/users?access_token=$canvas_token",$json_user,$header);
my $response = from_json($client->responseContent());
print Dumper $response if $debug;
}
sub add_course_to_canvas {
my $course_group = shift;
print "Adding course $course_group to Canvas\n" if $debug;
my ($course_name) = ($course_group =~ m/cn=(.*),ou=groups,dc=example,dc=edu/);
print "Modified course_name: $course_name\n" if $debug;
my $course;
$course->{course}->{name} = $course_name;
my $json_course = to_json($course);
print "Adding course: $json_course\n" if $debug;
$client->POST("/api/v1/accounts/1/courses?access_token=$canvas_token",$json_course,$header);
my $response = from_json($client->responseContent());
my $course_id = $response->{id};
print "*** COURSE_ID: $course_id\n" if $debug;
print "Returning Course_ID: $course_id\n" if $debug;
return $course_id;
}
sub add_user_to_course {
my $member_details = shift;
my $course_group = shift;
my $course_id = shift;
# TODO: Get user's user_id
my $login_id = $member_details->{pseudonym}->{unique_id};
$client->GET("/api/v1/accounts/1/users?access_token=$canvas_token&search_term=$login_id");
my $response = from_json($client->responseContent());
my $user_id = @$response[0]->{id};
# TODO: Get Course ID
#my ($course_name) = ($course_group =~ m/cn=(.*),ou=groups,dc=example,dc=edu/);
#print "looking for Course Name: $course_name\n" if $debug;
#$client->GET("/api/v1/accounts/1/courses?access_token=$canvas_token&search_terms=$course_name");
#$response = from_json($client->responseContent());
#print $client->responseContent() if $debug;
#my $course_id = @$response[0]->{id};
#print "Found Course_ID: $course_id\n" if $debug;
# TODO: Add user to course
my $enrollment;
$enrollment->{enrollment}->{type} = "StudentEnrollment";
$enrollment->{enrollment}->{user_id} = $user_id;
$enrollment->{enrollment}->{enrollment_state} = "active";
my $json_enrollment = to_json($enrollment);
print "Adding enrollment: $json_enrollment\n" if $debug;
$client->POST("/api/v1/courses/$course_id/enrollments?access_token=$canvas_token",$json_enrollment,$header);
print Dumper $client->responseContent();
$response = from_json($client->responseContent());
print Dumper $response if $debug;
}
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