--- rat/lonpageflip.pm 2017/03/08 02:51:18 1.95 +++ rat/lonpageflip.pm 2021/07/19 14:26:40 1.105 @@ -2,7 +2,7 @@ # # Page flip handler # -# $Id: lonpageflip.pm,v 1.95 2017/03/08 02:51:18 raeburn Exp $ +# $Id: lonpageflip.pm,v 1.105 2021/07/19 14:26:40 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -99,9 +99,12 @@ sub hash_src { } sub move { - my ($next,$endupmap,$direction) = @_; + my ($next,$endupmap,$direction,$firstres) = @_; my $safecount=0; my $allowed=0; + my $deeplinkonly=0; + my $prev=$next; + my ($prevmapid)=split(/\./,$next); do { ($next,$endupmap)=&get_next_possible_move($next,$endupmap,$direction); @@ -113,16 +116,37 @@ sub move { $allowed = 0; } else { my $priv = &Apache::lonnet::allowed('bre',$url,$symb); - $allowed = (($priv eq 'F') || ($priv eq '2')); + $allowed = (($priv eq 'F') || ($priv eq '2') || ($priv eq 'A')); } + $deeplinkonly = 0; + if ($hash{'deeplinkonly_'.$next}) { + my ($value,$level) = split(/:/,$hash{'deeplinkonly_'.$next}); + if ($level eq 'resource') { + $deeplinkonly = 1; + } elsif ($level eq 'map') { + if ($mapid != $prevmapid) { + $deeplinkonly = 1; + } + } + } elsif (($hash{'deeplinkonly_'.$prev}) && (!$firstres)) { + my ($value,$level) = split(/:/,$hash{'deeplinkonly_'.$prev}); + if ($level eq 'resource') { + $deeplinkonly = 1; + } elsif ($level eq 'map') { + if ($mapid != $prevmapid) { + $deeplinkonly = 1; + } + } + } $safecount++; } while ( ($next) && ($next!~/\,/) && ( (!$hash{'src_'.$next}) || ( - (!$env{'request.role.adv'}) - && $hash{'randomout_'.$next} + (!$env{'request.role.adv'}) + && (($hash{'randomout_'.$next}) + || ($deeplinkonly)) ) || (!$allowed) ) @@ -232,23 +256,33 @@ sub first_accessible_resource { if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'.db', &GDBM_READER(),0640)) { $furl=$hash{'first_url'}; - my %args; - my ($url,$args) = split(/\?/,$furl); - foreach my $pair (split(/\&/,$args)) { + my (%args,$url,$argstr); + if ($furl =~ m{^/enc/}) { + ($url,$argstr) = split(/\?/,&Apache::lonenc::unencrypted($furl)); + } else { + ($url,$argstr) = split(/\?/,$furl); + } + foreach my $pair (split(/\&/,$argstr)) { my ($name,$value) = split(/=/,$pair); $args{&unescape($name)} = &unescape($value); } - if (!&Apache::lonnet::allowed('bre',$url,$args{'symb'})) { + my $priv = &Apache::lonnet::allowed('bre',$url,$args{'symb'}); + my $allowed = (($priv eq 'F') || ($priv eq '2') || ($priv eq 'A')); + if (!$allowed) { # Wow, we cannot see this ... move forward to the next one that we can see - my ($newrid,$newmap)=&move($hash{'first_rid'},$hash{'first_mapurl'},'forward'); + my ($newrid,$newmap)=&move($hash{'first_rid'},$hash{'first_mapurl'},'forward',1); # Build the new URL - my ($newmapid,$newresid)=split(/\./,$newrid); - my $symb=&Apache::lonnet::encode_symb($newmap,$newresid,$hash{'src_'.$newrid}); - $furl=&add_get_param($hash{'src_'.$newrid},{ 'symb' => $symb }); - if ($hash{'encrypted_'.$newrid}) { - $furl=&Apache::lonenc::encrypted($furl); + if ($newrid eq '') { + $furl = '/adm/navmaps'; + } else { + my ($newmapid,$newresid)=split(/\./,$newrid); + my $symb=&Apache::lonnet::encode_symb($newmap,$newresid,$hash{'src_'.$newrid}); + $furl=&add_get_param($hash{'src_'.$newrid},{ 'symb' => $symb }); + if ($hash{'encrypted_'.$newrid}) { + $furl=&Apache::lonenc::encrypted($furl); + } } - } + } untie(%hash); return $furl; } else { @@ -280,7 +314,7 @@ sub first_answerable_ressymb { } sub check_http_req { - my ($srcref) = @_; + my ($srcref,$hostname) = @_; return unless (ref($srcref) eq 'SCALAR'); my $usehttp; if ($env{'request.course.id'}) { @@ -289,16 +323,46 @@ sub check_http_req { if (($$srcref =~ m{^\Q/public/$cdom/$cnum/syllabus\E($|\?)}) && ($ENV{'SERVER_PORT'} == 443) && ($env{'course.'.$env{'request.course.id'}.'.externalsyllabus'} =~ m{^http://})) { - $$srcref .= (($$srcref =~/\?/)? '&':'?') . 'usehttp=1'; - $usehttp = 1; + unless ((&Apache::lonnet::uses_sts()) || + (&Apache::lonnet::waf_allssl($hostname))) { + $$srcref .= (($$srcref =~/\?/)? '&':'?') . 'usehttp=1'; + $usehttp = 1; + } } elsif (($$srcref =~ m{^\Q/adm/wrapper/ext/\E(?!https:)}) && ($ENV{'SERVER_PORT'} == 443)) { - $usehttp = 1; + unless ((&Apache::lonnet::uses_sts()) || + (&Apache::lonnet::waf_allssl($hostname))) { + my ($url,$anchor) = ($$srcref =~ /^([^\#]+)(?:|(\#[^\#]+))$/); + $$srcref = $url . (($$srcref =~/\?/)? '&':'?') . 'usehttp=1' .$anchor; + $usehttp = 1; + } } } return $usehttp; } +sub reinited_js { + my ($url,$cid,$timeout) = @_; + if (!$timeout) { + $timeout = 0; + } + return <<"END"; + +END +} + # ================================================================ Main Handler sub handler { @@ -315,7 +379,8 @@ sub handler { my %cachehash=(); my $multichoice=0; my %multichoicehash=(); - my ($redirecturl,$redirectsymb,$enc,$anchor); + my %prog_state=(); + my ($redirecturl,$redirectsymb,$enc,$anchor,$deeplinklevel); my $next=''; my $hostname = $r->hostname(); my @possibilities=(); @@ -337,7 +402,7 @@ sub handler { } } elsif ($direction eq 'firstanswerable') { my $furl = &first_answerable_ressymb(); - my $usehttp = &check_http_req(\$furl); + my $usehttp = &check_http_req(\$furl,$hostname); if (($usehttp) && ($hostname ne '')) { $furl='http://'.$hostname.$furl; } else { @@ -372,8 +437,20 @@ sub handler { untie(%hash); } } + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + $r->print(&Apache::loncommon::start_page('Content Changed')); + my $preamble = '
'.$lt{'explain'}.'
'); + &Apache::loncommon::start_page('No Resource')); + if ($deeplinklevel eq 'resource') { + $r->print(''.$lt{'deeplinkres'}.'
'); + } elsif ($deeplinklevel eq 'map') { + $r->print(''.$lt{'deeplinkmap'}.'
'); + } else { + $r->print(''.$lt{'explain'}.'
'); + } } } } unless (($env{'course.'.$env{'request.course.id'}.'.type'} eq 'Placement') || ($env{'request.role.adv'})) { - if ((!@possibilities) && ($reinitcheck)) { + if ($deeplinklevel) { + $r->print( + &Apache::lonhtmlcommon::actionbox( + [''.$lt{'back'}.''])); + } elsif ((!@possibilities) && ($reinitcheck)) { $r->print( &Apache::lonhtmlcommon::actionbox( [''.$lt{'nav'}.'' @@ -653,12 +780,23 @@ ENDSTART } } else { # ------------------------------------------------- Problem, could not tie hash + if ($reinitcheck eq 'update') { + &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state); + $r->print(&Apache::loncommon::end_page()); + } $env{'user.error.msg'}="/adm/flip:bre:0:1:Course Data Missing"; return HTTP_NOT_ACCEPTABLE; } } else { # ---------------------------------------- No, could not determine where we are - $r->internal_redirect('/adm/ambiguous'); + my $newloc = '/adm/ambiguous'; + if ($reinitcheck eq 'update') { + &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state); + $r->print(&reinited_js($newloc,$env{'request.course.id'},100)); + $r->print(&Apache::loncommon::end_page()); + } else { + $r->internal_redirect($newloc); + } return OK; } } else {