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Annotation of loncom/interface/loncourseuser.pm, revision 1.1

1.1     ! raeburn     1: # The LearningOnline Network
        !             2: # Verify user is in course
        !             3: #
        !             4: # $Id: loncourseuser.pm,v 1.1 2023/04/01 21:00:00  raeburn Exp $
        !             5: #
        !             6: # Copyright Michigan State University Board of Trustees
        !             7: #
        !             8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
        !             9: #
        !            10: # LON-CAPA is free software; you can redistribute it and/or modify
        !            11: # it under the terms of the GNU General Public License as published by
        !            12: # the Free Software Foundation; either version 2 of the License, or
        !            13: # (at your option) any later version.
        !            14: #
        !            15: # LON-CAPA is distributed in the hope that it will be useful,
        !            16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            18: # GNU General Public License for more details.
        !            19: #
        !            20: # You should have received a copy of the GNU General Public License
        !            21: # along with LON-CAPA; if not, write to the Free Software
        !            22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
        !            23: #
        !            24: # /home/httpd/html/adm/gpl.txt
        !            25: #
        !            26: # http://www.lon-capa.org/
        !            27: #
        !            28: 
        !            29: package Apache::loncourseuser;
        !            30: 
        !            31: use strict;
        !            32: use Apache::Constants qw(:common :http);
        !            33: use Apache::lonnet;
        !            34: use Apache::loncommon;
        !            35: use Apache::lonuserutils;
        !            36: use JSON::DWIW;
        !            37: use LONCAPA qw(:DEFAULT :match);
        !            38: 
        !            39: sub handler {
        !            40:     my $r = shift;
        !            41:     &Apache::loncommon::content_type($r,'application/json');
        !            42:     $r->send_http_header;
        !            43:     my @userinfo;
        !            44:     if ($env{'request.course.id'}) {
        !            45:         my $canview;
        !            46:         foreach my $priv ('mgr','vgr') {
        !            47:             $canview = &Apache::lonnet::allowed($priv,$env{'request.course.id'});
        !            48:             if (!$canview && $env{'request.course.sec'} ne '') {
        !            49:                 if (&Apache::lonnet::allowed($priv,"$env{'request.course.id'}/$env{'request.course.sec'}")) {
        !            50:                     $canview = 'section';
        !            51:                 }
        !            52:             }
        !            53:             last if ($canview);
        !            54:         }
        !            55:         if ($canview) {
        !            56:             my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
        !            57:             my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
        !            58:             my $crstype = &Apache::loncommon::course_type();
        !            59:             if (($cdom) && ($cnum)) {
        !            60:                 my $possudom = $env{'form.udom'};
        !            61:                 if (&Apache::lonnet::domain($possudom) ne '') { 
        !            62:                     my $possuname = $env{'form.uname'};
        !            63:                     my $possuid = $env{'form.uid'};
        !            64:                     if (($possuname eq '') && ($possuid ne '')) {
        !            65:                         $possuname=(&Apache::lonnet::idget($possudom,[$possuid],'ids'))[1];
        !            66:                     }
        !            67:                     if ($possuname ne '') { 
        !            68:                         if (&is_course_user($possudom,$possuname,$cdom,$cnum,$canview,
        !            69:                                             $crstype,$env{'request.course.sec'})) {
        !            70:                             @userinfo = ($possuname,$possudom);
        !            71:                         }
        !            72:                     }
        !            73:                 }
        !            74:             }
        !            75:         }
        !            76:     }
        !            77:     $r->print(JSON::DWIW->to_json({match => \@userinfo}));
        !            78:     return OK;
        !            79: }
        !            80: 
        !            81: sub is_course_user {
        !            82:     my ($possudom,$possuname,$cdom,$cnum,$canview,$crstype,$section) = @_;
        !            83:     my $found;
        !            84:     my @types = ('active','future','previous');
        !            85:     my @roles = &Apache::lonuserutils::roles_by_context('course',1,$crstype);
        !            86:     my %userhash = &Apache::lonnet::get_my_roles($possuname,$possudom,'userroles',\@types,\@roles,[$cdom],1);
        !            87:     if (keys(%userhash)) {
        !            88:         foreach my $key (keys(%userhash)) {
        !            89:             next unless ($key =~ /^\Q$cnum:$cdom:\E/);
        !            90:             if ($canview eq 'section') {
        !            91:                 my $usec = (split(/:/,$key))[-1];
        !            92:                 if ($usec eq $section) {
        !            93:                    $found = 1;
        !            94:                 }
        !            95:             } else {
        !            96:                 $found = 1;
        !            97:             }
        !            98:             last if ($found);
        !            99:         }
        !           100:     }
        !           101:     return $found;
        !           102: }
        !           103: 
        !           104: 1;
        !           105: