--- loncom/auth/lonacc.pm 2020/09/30 20:03:12 1.159.2.8.2.4 +++ loncom/auth/lonacc.pm 2021/10/26 14:17:21 1.198 @@ -1,7 +1,7 @@ # The LearningOnline Network # Cookie Based Access Handler # -# $Id: lonacc.pm,v 1.159.2.8.2.4 2020/09/30 20:03:12 raeburn Exp $ +# $Id: lonacc.pm,v 1.198 2021/10/26 14:17:21 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -102,6 +102,7 @@ use Apache::loncommon(); use Apache::lonlocal; use Apache::restrictedaccess(); use Apache::blockedaccess(); +use Apache::lonprotected(); use Fcntl qw(:flock); use LONCAPA qw(:DEFAULT :match); @@ -202,6 +203,14 @@ sub get_posted_cgi { $fname=''; $fmime=''; } + if ($i<$#lines && $lines[$i+1]=~/^Content\-Type\:\s*([\w\-\/]+)/i) { + # TODO: something with $1 ! + $i++; + } + if ($i<$#lines && $lines[$i+1]=~/^Content\-transfer\-encoding\:\s*([\w\-\/]+)/i) { + # TODO: something with $1 ! + $i++; + } $i++; } } else { @@ -296,7 +305,7 @@ sub sso_login { my $query = $r->args; my %form; if ($query) { - my @items = ('role','symb','iptoken'); + my @items = ('role','symb','iptoken','origurl','ltoken','linkkey'); &Apache::loncommon::get_unprocessed_cgi($query,\@items); foreach my $item (@items) { if (defined($env{'form.'.$item})) { @@ -314,6 +323,16 @@ sub sso_login { } } + my ($linkprot,$linkkey); + if ($form{'ltoken'}) { + my %link_info = &Apache::lonnet::tmpget($form{'ltoken'}); + $linkprot = $link_info{'linkprot'}; + my $delete = &Apache::lonnet::tmpdel($form{'ltoken'}); + } + if ($form{'linkkey'} ne '') { + $linkkey = $form{'linkkey'}; + } + my $domain = $r->dir_config('lonSSOUserDomain'); if ($domain eq '') { $domain = $r->dir_config('lonDefDomain'); @@ -340,7 +359,7 @@ sub sso_login { my $lowest_load; ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($domain); if ($lowest_load > 100) { - $otherserver = &Apache::lonnet::spareserver($lowest_load,$lowest_load,1,$domain); + $otherserver = &Apache::lonnet::spareserver($r,$lowest_load,$lowest_load,1,$domain); } if ($otherserver ne '') { my @hosts = &Apache::lonnet::current_machine_ids(); @@ -358,11 +377,23 @@ sub sso_login { foreach my $item (keys(%form)) { $env{'form.'.$item} = $form{$item}; } - unless ($form{'symb'}) { + unless (($form{'symb'}) || ($form{'origurl'})) { unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) { $env{'form.origurl'} = $r->uri; } } + if (($r->uri eq '/adm/sso') && ($form{'origurl'} =~ m{^/+tiny/+$match_domain/+\w+$})) { + $env{'request.deeplink.login'} = $form{'origurl'}; + } elsif ($r->uri =~ m{^/+tiny/+$match_domain/+\w+$}) { + $env{'request.deeplink.login'} = $r->uri; + } + if ($env{'request.deeplink.login'}) { + if ($linkprot) { + $env{'request.linkprot'} = $linkprot; + } elsif ($linkkey ne '') { + $env{'request.linkkey'} = $linkkey; + } + } $env{'request.sso.login'} = 1; if (defined($r->dir_config("lonSSOReloginServer"))) { $env{'request.sso.reloginserver'} = @@ -377,23 +408,35 @@ sub sso_login { } else { # need to login them in, so generate the need data that # migrate expects to do login - my $ip = $r->get_remote_host(); + my $ip = &Apache::lonnet::get_requestor_ip($r); my %info=('ip' => $ip, 'domain' => $domain, 'username' => $user, 'server' => $r->dir_config('lonHostID'), 'sso.login' => 1 ); - foreach my $item ('role','symb','iptoken') { + foreach my $item ('role','symb','iptoken','origurl') { if (exists($form{$item})) { $info{$item} = $form{$item}; } } - unless ($info{'symb'}) { + unless (($info{'symb'}) || ($info{'origurl'})) { unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) { $info{'origurl'} = $r->uri; } } + if (($r->uri eq '/adm/sso') && ($form{'origurl'} =~ m{^/+tiny/+$match_domain/+\w+$})) { + $info{'deeplink.login'} = $form{'origurl'}; + } elsif ($r->uri =~ m{^/+tiny/+$match_domain/+\w+$}) { + $info{'deeplink.login'} = $r->uri; + } + if ($info{'deeplink.login'}) { + if ($linkprot) { + $info{'linkprot'} = $linkprot; + } elsif ($linkkey ne '') { + $info{'linkkey'} = $linkkey; + } + } if ($r->dir_config("ssodirecturl") == 1) { $info{'origurl'} = $r->uri; } @@ -470,7 +513,7 @@ sub handler { if ($handle eq '') { unless ((($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) || ($requrl =~ m{^/public/$match_domain/$match_courseid/syllabus}) || - ($requrl =~ m{^/adm/help/}) || + ($requrl =~ m{^/adm/help/}) || ($requrl eq '/adm/sso') || ($requrl =~ m{^/res/$match_domain/$match_username/})) { $r->log_reason("Cookie not valid", $r->filename); } @@ -528,7 +571,8 @@ sub handler { } } elsif ($env{'request.course.id'} && (($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) || - ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}))) { + ($requrl eq "/public/$cdom/$cnum/syllabus") || + ($requrl =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}))) { my $query = $r->args; if ($query) { foreach my $pair (split(/&/,$query)) { @@ -549,7 +593,7 @@ sub handler { my $hostname = $r->hostname(); my $lonhost = &Apache::lonnet::host_from_dns($hostname); if ($lonhost) { - my $actual = &Apache::lonnet::absolute_url($hostname); + my $actual = &Apache::lonnet::absolute_url($hostname,1,1); my $exphostname = &Apache::lonnet::hostname($lonhost); my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname; unless ($actual eq $expected) { @@ -572,31 +616,27 @@ sub handler { if ($env{'user.noloadbalance'} eq $r->dir_config('lonHostID')) { $checkexempt = 1; } - unless ($checkexempt) { + unless (($checkexempt) || (($requrl eq '/adm/switchserver') && (!$r->is_initial_req()))) { ($is_balancer,$otherserver) = &Apache::lonnet::check_loadbalancing($env{'user.name'}, $env{'user.domain'}); if ($is_balancer) { - unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) { - # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer) - my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r); - if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) { - $otherserver = $found_server; - } + # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer) + my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r); + if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) { + $otherserver = $found_server; + } + unless ($requrl eq '/adm/switchserver') { + $r->set_handlers('PerlResponseHandler'=> + [\&Apache::switchserver::handler]); } - } - } - if ($is_balancer) { - unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) { - $r->set_handlers('PerlResponseHandler'=> - [\&Apache::switchserver::handler]); if ($otherserver ne '') { $env{'form.otherserver'} = $otherserver; } - } - unless (($env{'form.origurl'}) || ($r->uri eq '/adm/roles') || - ($r->uri eq '/adm/switchserver') || ($r->uri eq '/adm/sso')) { - $env{'form.origurl'} = $r->uri; + unless (($env{'form.origurl'}) || ($r->uri eq '/adm/roles') || + ($r->uri eq '/adm/switchserver') || ($r->uri eq '/adm/sso')) { + $env{'form.origurl'} = $r->uri; + } } } if ($requrl=~m{^/+tiny/+$match_domain/+\w+$}) { @@ -608,26 +648,37 @@ sub handler { return OK; } } - # ---------------------------------------------------------------- Check access my $now = time; - my $check_symb; + my ($check_symb,$check_access,$check_block,$access,$poss_symb); if ($requrl !~ m{^/(?:adm|public|(?:prt|zip)spool)/} || $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) { - my ($access,$poss_symb); - if (($env{'request.course.id'}) && (!$suppext)) { - $requrl=~/\.(\w+)$/; - if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || - ($requrl=~/^\/adm\/.*\/(aboutme|smppg|bulletinboard)(\?|$ )/x) || - ($requrl=~/^\/adm\/wrapper\//) || - ($requrl=~m|^/adm/coursedocs/showdoc/|) || - ($requrl=~m|\.problem/smpedit$|) || - ($requrl=~/^\/public\/.*\/syllabus$/) || - ($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) || - ($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/)) { - $check_symb = 1; - } + $check_access = 1; + } + if ((!$check_access) && ($env{'request.course.id'})) { + if (($requrl eq '/adm/viewclasslist') || + ($requrl =~ m{^(/adm/wrapper|)\Q/uploaded/$cdom/$cnum/docs/\E}) || + ($requrl =~ m{^/adm/.*/aboutme$}) || + ($requrl=~m{^/adm/coursedocs/showdoc/}) || + ($requrl=~m{^(/adm/wrapper|)/adm/$cdom/$cnum/\d+/ext\.tool$})) { + $check_block = 1; + } + } + if (($env{'request.course.id'}) && (!$suppext)) { + $requrl=~/\.(\w+)$/; + if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || + ($requrl=~/^\/adm\/.*\/(aboutme|smppg|bulletinboard)(\?|$ )/x) || + ($requrl=~/^\/adm\/wrapper\//) || + ($requrl=~m|^/adm/coursedocs/showdoc/|) || + ($requrl=~m|\.problem/smpedit$|) || + ($requrl=~/^\/public\/.*\/syllabus$/) || + ($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) || + ($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/) || + ($requrl=~m{^/adm/$cdom/$cnum/\d+/ext\.tool$})) { + $check_symb = 1; } + } + if (($check_access) || ($check_block)) { if ($check_symb) { if ($env{'form.symb'}) { $poss_symb=&Apache::lonnet::symbclean($env{'form.symb'}); @@ -635,6 +686,9 @@ sub handler { my $query = $r->args; foreach my $pair (split(/&/,$query)) { my ($name, $value) = split(/=/,$pair); + $name = &unescape($name); + $value =~ tr/+/ /; + $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; if ($name eq 'symb') { $poss_symb = &Apache::lonnet::symbclean($value); last; @@ -644,13 +698,18 @@ sub handler { if ($poss_symb) { my ($possmap,$resid,$url)=&Apache::lonnet::decode_symb($poss_symb); $url = &Apache::lonnet::clutter($url); - unless (($url eq $requrl) && (&Apache::lonnet::is_on_map($possmap))) { + my $toplevelmap = $env{'course.'.$env{'request.course.id'}.'.url'}; + unless (($url eq $requrl) && (($possmap eq $toplevelmap) || + (&Apache::lonnet::is_on_map($possmap)))) { undef($poss_symb); } if ($poss_symb) { if ((!$env{'request.role.adv'}) && ($env{'acc.randomout'}) && ($env{'acc.randomout'}=~/\&\Q$poss_symb\E\&/)) { undef($poss_symb); + } elsif ((!$env{'request.role.adv'}) && ($env{'acc.deeplinkout'}) && + ($env{'acc.deeplinkout'}=~/\&\Q$poss_symb\E\&/)) { + undef($poss_symb); } } } @@ -660,8 +719,31 @@ sub handler { $access=&Apache::lonnet::allowed('bre',$requrl,'','','','',1); } } else { - $access=&Apache::lonnet::allowed('bre',$requrl); + my $nodeeplinkcheck; + if (($check_access) && ($requrl =~ /\.(sequence|page)$/)) { + unless ($env{'form.navmap'}) { + if ($r->args ne '') { + &Apache::loncommon::get_unprocessed_cgi($r->args,['navmap']); + unless ($env{'form.navmap'}) { + $nodeeplinkcheck = 1; + } + } + } + } + $access=&Apache::lonnet::allowed('bre',$requrl,'','','','','',$nodeeplinkcheck); } + } + if ($check_block) { + if ($access eq 'B') { + if ($poss_symb) { + if (&Apache::lonnet::symbverify($poss_symb,$requrl)) { + $env{'request.symb'} = $poss_symb; + } + } + &Apache::blockedaccess::setup_handler($r); + return OK; + } + } elsif ($check_access) { if ($handle eq '') { unless ($access eq 'F') { if ($requrl =~ m{^/res/$match_domain/$match_username/}) { @@ -679,9 +761,6 @@ sub handler { } if ($access eq 'B') { if ($poss_symb) { - if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) { - $requrl = $1; - } if (&Apache::lonnet::symbverify($poss_symb,$requrl)) { $env{'request.symb'} = $poss_symb; } @@ -689,6 +768,10 @@ sub handler { &Apache::blockedaccess::setup_handler($r); return OK; } + if ($access eq 'D') { + &Apache::lonprotected::setup_handler($r); + return OK; + } if (($access ne '2') && ($access ne 'F')) { if ($requrl =~ m{^/res/}) { $access = &Apache::lonnet::allowed('bro',$requrl); @@ -705,7 +788,7 @@ sub handler { } } } elsif (($handle =~ /^publicuser_\d+$/) && (&Apache::lonnet::is_portfolio_url($requrl))) { - my $clientip = $r->get_remote_host(); + my $clientip = &Apache::lonnet::get_requestor_ip($r); if (&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip) ne 'F') { $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; return HTTP_NOT_ACCEPTABLE; @@ -754,18 +837,32 @@ sub handler { } if ($env{'form.symb'}) { $symb=&Apache::lonnet::symbclean($env{'form.symb'}); - if ($requrl eq '/adm/navmaps') { - my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); - &Apache::lonnet::symblist($map,$murl => [$murl,$mid]); - } elsif ($requrl =~ m|^/adm/wrapper/| - || $requrl =~ m|^/adm/coursedocs/showdoc/|) { - my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); - if ($map =~ /\.page$/) { - my $mapsymb = &Apache::lonnet::symbread($map); - ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb); + if (($requrl eq '/adm/navmaps') || + ($requrl =~ m{^/adm/wrapper/}) || + ($requrl =~ m{^/adm/coursedocs/showdoc/})) { + unless (&Apache::lonnet::symbverify($symb,$requrl)) { + if (&Apache::lonnet::is_on_map($requrl)) { + $symb = &Apache::lonnet::symbread($requrl); + unless (&Apache::lonnet::symbverify($symb,$requrl)) { + undef($symb); + } + } + } + if ($symb) { + if ($requrl eq '/adm/navmaps') { + my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); + &Apache::lonnet::symblist($map,$murl => [$murl,$mid]); + } elsif (($requrl =~ m{^/adm/wrapper/}) || + ($requrl =~ m{^/adm/coursedocs/showdoc/})) { + my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); + if ($map =~ /\.page$/) { + my $mapsymb = &Apache::lonnet::symbread($map); + ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb); + } + &Apache::lonnet::symblist($map,$murl => [$murl,$mid], + 'last_known' =>[$murl,$mid]); + } } - &Apache::lonnet::symblist($map,$murl => [$murl,$mid], - 'last_known' =>[$murl,$mid]); } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) || (($requrl=~m|(.*)/smpedit$|) && &Apache::lonnet::symbverify($symb,$1)) || @@ -795,19 +892,29 @@ sub handler { unless (&Apache::lonnet::symbverify($symb,$requrl,\$encstate)) { $invalidsymb = 1; # - # If $env{'request.enc'} is true, but no encryption for $symb retrieved - # by original lonnet::symbread() call, call again to check for an instance - # of $requrl in the course which has encryption, and set that as the symb. - # If there is no such symb, or symbverify() fails for the new symb proceed - # to report invalid symb. + # If $env{'request.enc'} inconsistent with encryption expected for $symb + # retrieved by lonnet::symbread(), call again to check for an instance of + # $requrl in the course for which expected encryption matches request.enc. + # If symb for different instance passes lonnet::symbverify(), use that as + # the symb for $requrl and call &Apache::lonnet::allowed() for that symb. + # Report invalid symb if there is no other symb. Redirect to /adm/ambiguous + # if multiple possible symbs consistent with request.enc available for $requrl. # - if ($env{'request.enc'} && !$encstate) { + if (($env{'request.enc'} && !$encstate) || (!$env{'request.enc'} && $encstate)) { my %possibles; my $nocache = 1; + my $oldsymb = $symb; $symb = &Apache::lonnet::symbread($requrl,'','','',\%possibles,$nocache); - if ($symb) { + if (($symb) && ($symb ne $oldsymb)) { if (&Apache::lonnet::symbverify($symb,$requrl)) { - $invalidsymb = ''; + my $access=&Apache::lonnet::allowed('bre',$requrl,$symb); + if ($access eq 'B') { + $env{'request.symb'} = $symb; + &Apache::blockedaccess::setup_handler($r); + return OK; + } elsif (($access eq '2') || ($access eq 'F')) { + $invalidsymb = ''; + } } } elsif (keys(%possibles) > 1) { $r->internal_redirect('/adm/ambiguous'); @@ -815,10 +922,14 @@ sub handler { } } if ($invalidsymb) { - $r->log_reason('Invalid symb for '.$requrl.': '.$symb); - $env{'user.error.msg'}= - "$requrl:bre:1:1:Invalid Access"; - return HTTP_NOT_ACCEPTABLE; + if ($requrl eq '/adm/navmaps') { + undef($symb); + } else { + $r->log_reason('Invalid symb for '.$requrl.': '.$symb); + $env{'user.error.msg'}= + "$requrl:bre:1:1:Invalid Access"; + return HTTP_NOT_ACCEPTABLE; + } } } } @@ -832,8 +943,8 @@ sub handler { my $mapsymb = &Apache::lonnet::symbread($map); ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb); } - &Apache::lonnet::symblist($map,$murl =>[$murl,$mid], - 'last_known' =>[$murl,$mid]); + &Apache::lonnet::symblist($map,$murl =>[$murl,$mid], + 'last_known' =>[$murl,$mid]); } } } @@ -885,8 +996,8 @@ sub handler { } # ------------------------------------ See if this is a viewable portfolio file if (&Apache::lonnet::is_portfolio_url($requrl)) { - my $clientip = $r->get_remote_host(); - my $access=&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip); + my $clientip = &Apache::lonnet::get_requestor_ip($r); + my $access=&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip); if ($access eq 'A') { &Apache::restrictedaccess::setup_handler($r); return OK;