--- loncom/auth/lonacc.pm 2003/04/03 16:50:46 1.41 +++ loncom/auth/lonacc.pm 2018/12/17 21:43:05 1.172 @@ -1,7 +1,7 @@ # The LearningOnline Network # Cookie Based Access Handler # -# $Id: lonacc.pm,v 1.41 2003/04/03 16:50:46 www Exp $ +# $Id: lonacc.pm,v 1.172 2018/12/17 21:43:05 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,224 +25,8 @@ # # http://www.lon-capa.org/ # -# YEAR=1999 -# 5/21/99,5/22,5/29,5/31,6/15,16/11,22/11, -# YEAR=2000 -# 01/06,01/13,05/31,06/01,09/06,09/25,09/28,10/30,11/6, -# 12/25,12/26, -# YEAR=2001 -# 01/06/01,05/28,8/11,9/26,11/29 Gerd Kortemeyer -# YEAR=2002 -# 1/4,2/25 Gerd Kortemeyer -# ### -package Apache::lonacc; - -use strict; -use Apache::Constants qw(:common :http :methods); -use Apache::File; -use Apache::lonnet; -use Apache::loncommon(); -use CGI::Cookie(); -use Fcntl qw(:flock); - -sub handler { - my $r = shift; - my $requrl=$r->uri; - my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); - my $lonid=$cookies{'lonID'}; - my $cookie; - if ($lonid) { - my $handle=$lonid->value; - $handle=~s/\W//g; - my $lonidsdir=$r->dir_config('lonIDsDir'); - if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) { - -# ------------------------------------------- Transfer profile into environment - - my @profile; - { - my $idf=Apache::File->new("$lonidsdir/$handle.id"); - flock($idf,LOCK_SH); - @profile=<$idf>; - $idf->close(); - } - my $envi; - for ($envi=0;$envi<=$#profile;$envi++) { - chomp($profile[$envi]); - my ($envname,$envvalue)=split(/=/,$profile[$envi]); - $ENV{$envname} = $envvalue; - } - $ENV{'user.environment'} = "$lonidsdir/$handle.id"; - if ($requrl=~/^\/res\//) { - $ENV{'request.state'} = "published"; - } else { - $ENV{'request.state'} = 'unknown'; - } - $ENV{'request.filename'} = $r->filename; - -# -------------------------------------------------------- Load POST parameters - - - - my $buffer; - - $r->read($buffer,$r->header_in('Content-length')); - unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) { - my @pairs=split(/&/,$buffer); - my $pair; - foreach $pair (@pairs) { - my ($name,$value) = split(/=/,$pair); - $value =~ tr/+/ /; - $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; - $name =~ tr/+/ /; - $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; - &Apache::loncommon::add_to_env("form.$name",$value); - } - } else { - my $contentsep=$1; - my @lines = split (/\n/,$buffer); - my $name=''; - my $value=''; - my $fname=''; - my $fmime=''; - my $i; - for ($i=0;$i<=$#lines;$i++) { - if ($lines[$i]=~/^$contentsep/) { - if ($name) { - chomp($value); - if ($fname) { - $ENV{"form.$name.filename"}=$fname; - $ENV{"form.$name.mimetype"}=$fmime; - } else { - $value=~s/\s+$//s; - } - &Apache::loncommon::add_to_env("form.$name",$value); - } - if ($i<$#lines) { - $i++; - $lines[$i]=~ - /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i; - $name=$1; - $value=''; - if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) { - $fname=$1; - if - ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) { - $fmime=$1; - $i++; - } else { - $fmime=''; - } - } else { - $fname=''; - $fmime=''; - } - $i++; - } - } else { - $value.=$lines[$i]."\n"; - } - } - } - $ENV{'request.method'}=$ENV{'REQUEST_METHOD'}; - $r->method_number(M_GET); - $r->method('GET'); - $r->headers_in->unset('Content-length'); - -# ---------------------------------------------------------------- Check access - - if ($requrl!~/^\/adm|public|prtspool\//) { - my $access=&Apache::lonnet::allowed('bre',$requrl); - if ($access eq '1') { - $ENV{'user.error.msg'}="$requrl:bre:0:0:Choose Course"; - return HTTP_NOT_ACCEPTABLE; - } - if (($access ne '2') && ($access ne 'F')) { - $ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; - return HTTP_NOT_ACCEPTABLE; - } - } - if ($requrl =~ m|^/prtspool/|) { - my $start='/prtspool/'.$ENV{'user.name'}.'_'. - $ENV{'user.domain'}; - if ($requrl !~ /^\Q$start\E/) { - $ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; - return HTTP_NOT_ACCEPTABLE; - } - } -# ------------------------------------------------------------- This is allowed - if ($ENV{'request.course.id'}) { - &Apache::lonnet::countacc($requrl); - $requrl=~/\.(\w+)$/; - if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || - ($requrl=~/^\/adm\/(aboutme|navmaps|smppg|bulletinboard|wrapper)/) || - ($requrl=~/^\/public\/.*\/syllabus$/)) { -# ------------------------------------- This is serious stuff, get symb and log - my $query=$r->args; - my $symb; - if ($query) { - &Apache::loncommon::get_unprocessed_cgi($query,['symb']); - } - if ($ENV{'form.symb'}) { - $symb=&Apache::lonnet::symbclean($ENV{'form.symb'}); - if (&Apache::lonnet::symbverify($symb,$requrl)) { - my ($map,$mid,$murl)=split(/\_\_\_/,$symb); - &Apache::lonnet::symblist($map,$murl => $mid, - 'last_known' => $murl); - } else { - $r->log_reason('Invalid symb for '.$requrl.': '. - $symb); - $ENV{'user.error.msg'}= - "$requrl:bre:1:1:Invalid Access"; - return HTTP_NOT_ACCEPTABLE; - } - } else { - $symb=&Apache::lonnet::symbread; - } - $ENV{'request.symb'}=$symb; - &Apache::lonnet::courseacclog($symb); - } else { -# ------------------------------------------------------- This is other content - &Apache::lonnet::courseacclog($requrl); - } - } - return OK; - } else { - $r->log_reason("Cookie $handle not valid", $r->filename) - }; - } - -# -------------------------------------------- See if this is a public resource - if ($requrl=~m|^/public/| - || (&Apache::lonnet::metadata($requrl,'copyright') eq 'public')) { - &Apache::lonnet::logthis('Granting public access: '.$requrl); - $ENV{'user.name'}='public'; - $ENV{'user.domain'}='public'; - $ENV{'request.state'} = "published"; - $ENV{'request.publicaccess'} = 1; - $ENV{'request.filename'} = $r->filename; - return OK; - } -# -------------------------------------------------------------- Not authorized - $requrl=~/\.(\w+)$/; - if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || - ($requrl=~/^\/adm\/(roles|logout|email|menu|remote)/) || - ($requrl=~m|^/prtspool/|)) { -# -------------------------- Store where they wanted to go and get login screen - $ENV{'request.querystring'}=$r->args; - $ENV{'request.firsturl'}=$requrl; - return FORBIDDEN; - } else { -# --------------------------------------------------------------------- Goodbye - return HTTP_BAD_REQUEST; - } -} - -1; -__END__ - =head1 NAME Apache::lonacc - Cookie Based Access Handler @@ -303,4 +87,745 @@ store attempted access =back +=head1 NOTABLE SUBROUTINES + +=cut + + +package Apache::lonacc; + +use strict; +use Apache::Constants qw(:common :http :methods); +use Apache::File; +use Apache::lonnet; +use Apache::loncommon(); +use Apache::lonlocal; +use Apache::restrictedaccess(); +use Apache::blockedaccess(); +use Fcntl qw(:flock); +use LONCAPA qw(:DEFAULT :match); + +sub cleanup { + my ($r)=@_; + if (! $r->is_initial_req()) { return DECLINED; } + &Apache::lonnet::save_cache(); + return OK; +} + +sub goodbye { + my ($r)=@_; + &Apache::lonnet::goodbye(); + return DONE; +} + +############################################### + +sub get_posted_cgi { + my ($r,$fields) = @_; + + my $buffer; + if ($r->header_in('Content-length')) { + $r->read($buffer,$r->header_in('Content-length'),0); + } + my $content_type = $r->header_in('Content-type'); + if ($content_type !~ m{^multipart/form-data}) { + my @pairs=split(/&/,$buffer); + my $pair; + foreach $pair (@pairs) { + my ($name,$value) = split(/=/,$pair); + $value =~ tr/+/ /; + $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; + $name =~ tr/+/ /; + $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; + if (ref($fields) eq 'ARRAY') { + next if (!grep(/^\Q$name\E$/,@{$fields})); + } + &Apache::loncommon::add_to_env("form.$name",$value); + } + } else { + my ($contentsep) = ($content_type =~ /boundary=\"?([^\";,]+)\"?/); + my @lines = split (/\n/,$buffer); + my $name=''; + my $value=''; + my $fname=''; + my $fmime=''; + my $i; + for ($i=0;$i<=$#lines;$i++) { + if ($lines[$i]=~/^--\Q$contentsep\E/) { + if ($name) { + chomp($value); + if (($r->uri eq '/adm/portfolio') && + ($name eq 'uploaddoc')) { + if (length($value) == 1) { + $value=~s/[\r\n]$//; + } + } elsif ($fname =~ /\.(xls|doc|ppt)(x|m)$/i) { + $value=~s/[\r\n]$//; + } + if (ref($fields) eq 'ARRAY') { + next if (!grep(/^\Q$name\E$/,@{$fields})); + } + if ($fname) { + if ($env{'form.symb'} ne '') { + my $size = (length($value))/(1024.0 * 1024.0); + if (&upload_size_allowed($name,$size,$fname) eq 'ok') { + $env{"form.$name.filename"}=$fname; + $env{"form.$name.mimetype"}=$fmime; + &Apache::loncommon::add_to_env("form.$name",$value); + } + } else { + $env{"form.$name.filename"}=$fname; + $env{"form.$name.mimetype"}=$fmime; + &Apache::loncommon::add_to_env("form.$name",$value); + } + } else { + $value=~s/\s+$//s; + &Apache::loncommon::add_to_env("form.$name",$value); + } + } + if ($i<$#lines) { + $i++; + $lines[$i]=~ + /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i; + $name=$1; + $value=''; + if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) { + $fname=$1; + if + ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) { + $fmime=$1; + $i++; + } else { + $fmime=''; + } + } else { + $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 { + $value.=$lines[$i]."\n"; + } + } + } +# +# Digested POSTed values +# +# Remember the way this was originally done (GET or POST) +# + $env{'request.method'}=$ENV{'REQUEST_METHOD'}; +# +# There may also be stuff in the query string +# Tell subsequent handlers that this was GET, not POST, so they can access query string. +# Also, unset POSTed content length to cover all tracks. +# + + $r->method_number(M_GET); + + $r->method('GET'); + $r->headers_in->unset('Content-length'); +} + +=pod + +=over + +=item upload_size_allowed() + + Perform size checks for file uploads to essayresponse items in course context. + + Add form.HWFILESIZE.$part_$id to %env with file size (MB) + If file exceeds maximum allowed size, add form.HWFILETOOBIG.$part_$id to %env. + +=cut + +sub upload_size_allowed { + my ($name,$size,$fname) = @_; + if ($name =~ /^HWFILE(\w+)$/) { + my $ident = $1; + my $item = 'HWFILESIZE'.$ident; + my $savesize = sprintf("%.6f",$size); + &Apache::loncommon::add_to_env("form.$item",$savesize); + my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize"); + if (!$maxsize) { + $maxsize = 10.0; # FIXME This should become a domain configuration. + } + if ($size > $maxsize) { + my $warn = 'HWFILETOOBIG'.$ident; + &Apache::loncommon::add_to_env("form.$warn",$fname); + return; + } + } + return 'ok'; +} + +=pod + +=item sso_login() + + handle the case of the single sign on user, at this point $r->user + will be set and valid; now need to find the loncapa user info, and possibly + balance them. If $r->user() is set this means either it was either set by + SSO or by checkauthen.pm, if a valid cookie was found. The latter case can + be identified by the third arg ($usename), except when lonacc is called in + an internal redirect to /adm/switchserver (e.g., load-balancing following + successful authentication) -- no cookie set yet. For that particular case + simply skip the call to sso_login(). + + returns OK if it was SSO and user was handled. + returns undef if not SSO or no means to handle the user. + +=cut + +sub sso_login { + my ($r,$handle,$username) = @_; + + if (($r->user eq '') || ($username ne '') || ($r->user eq 'public:public') || + (defined($env{'user.name'}) && (defined($env{'user.domain'})) + && ($handle ne ''))) { + # not an SSO case or already logged in + return undef; + } + + my ($user) = ($r->user =~ m/^($match_username)$/); + if ($user eq '') { + return undef; + } + + my $query = $r->args; + my %form; + if ($query) { + my @items = ('role','symb','iptoken'); + &Apache::loncommon::get_unprocessed_cgi($query,\@items); + foreach my $item (@items) { + if (defined($env{'form.'.$item})) { + $form{$item} = $env{'form.'.$item}; + } + } + } + + my %sessiondata; + if ($form{'iptoken'}) { + %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'}); + my $delete = &Apache::lonnet::tmpdel($form{'iptoken'}); + unless ($sessiondata{'sessionserver'}) { + delete($form{'iptoken'}); + } + } + + my $domain = $r->dir_config('lonSSOUserDomain'); + if ($domain eq '') { + $domain = $r->dir_config('lonDefDomain'); + } + my $home=&Apache::lonnet::homeserver($user,$domain); + if ($home !~ /(con_lost|no_host|no_such_host)/) { + &Apache::lonnet::logthis(" SSO authorized user $user "); + my ($is_balancer,$otherserver,$hosthere); + if ($form{'iptoken'}) { + if (($sessiondata{'domain'} eq $domain) && + ($sessiondata{'username'} eq $user)) { + $hosthere = 1; + } + } + unless ($hosthere) { + ($is_balancer,$otherserver) = + &Apache::lonnet::check_loadbalancing($user,$domain,'login'); + if ($is_balancer) { + # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer) + my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r); + if (($found_server) && ($balancer_cookie =~ /^\Q$domain\E_\Q$user\E_/)) { + $otherserver = $found_server; + } elsif ($otherserver eq '') { + 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); + } + if ($otherserver ne '') { + my @hosts = &Apache::lonnet::current_machine_ids(); + if (grep(/^\Q$otherserver\E$/,@hosts)) { + $hosthere = $otherserver; + } + } + } + } + } + if (($is_balancer) && (!$hosthere)) { + # login but immediately go to switch server to find us a new + # machine + &Apache::lonauth::success($r,$user,$domain,$home,'noredirect'); + foreach my $item (keys(%form)) { + $env{'form.'.$item} = $form{$item}; + } + unless ($form{'symb'}) { + unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) { + $env{'form.origurl'} = $r->uri; + } + } + $env{'request.sso.login'} = 1; + if (defined($r->dir_config("lonSSOReloginServer"))) { + $env{'request.sso.reloginserver'} = + $r->dir_config('lonSSOReloginServer'); + } + my $redirecturl = '/adm/switchserver'; + if ($otherserver ne '') { + $redirecturl .= '?otherserver='.$otherserver; + } + $r->internal_redirect($redirecturl); + $r->set_handlers('PerlHandler'=> undef); + } else { + # need to login them in, so generate the need data that + # migrate expects to do login + my $ip = $r->get_remote_host(); + my %info=('ip' => $ip, + 'domain' => $domain, + 'username' => $user, + 'server' => $r->dir_config('lonHostID'), + 'sso.login' => 1 + ); + foreach my $item ('role','symb','iptoken') { + if (exists($form{$item})) { + $info{$item} = $form{$item}; + } + } + unless ($info{'symb'}) { + unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) { + $info{'origurl'} = $r->uri; + } + } + if ($r->dir_config("ssodirecturl") == 1) { + $info{'origurl'} = $r->uri; + } + if (defined($r->dir_config("lonSSOReloginServer"))) { + $info{'sso.reloginserver'} = + $r->dir_config('lonSSOReloginServer'); + } + if (($is_balancer) && ($hosthere)) { + $info{'noloadbalance'} = $hosthere; + } + my $token = + &Apache::lonnet::tmpput(\%info, + $r->dir_config('lonHostID')); + $env{'form.token'} = $token; + $r->internal_redirect('/adm/migrateuser'); + $r->set_handlers('PerlHandler'=> undef); + } + return OK; + } else { + &Apache::lonnet::logthis(" SSO authorized unknown user $user "); + my @cancreate; + my %domconfig = + &Apache::lonnet::get_dom('configuration',['usercreation'],$domain); + if (ref($domconfig{'usercreation'}) eq 'HASH') { + if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') { + if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') { + @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}}; + } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') && + ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) { + @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}); + } + } + } + if ((grep(/^sso$/,@cancreate)) || (defined($r->dir_config('lonSSOUserUnknownRedirect')))) { + $r->subprocess_env->set('SSOUserUnknown' => $user); + $r->subprocess_env->set('SSOUserDomain' => $domain); + if (grep(/^sso$/,@cancreate)) { + $r->set_handlers('PerlHandler'=> [\&Apache::createaccount::handler]); + $r->handler('perl-script'); + } else { + $r->internal_redirect($r->dir_config('lonSSOUserUnknownRedirect')); + $r->set_handlers('PerlHandler'=> undef); + } + return OK; + } + } + return undef; +} + +sub handler { + my $r = shift; + my $requrl=$r->uri; + + if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) { + return OK; + } + + if (&Apache::lonnet::is_domainimage($requrl)) { + return OK; + } + + my %user; + my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user); + + unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) { + my $result = &sso_login($r,$handle,$user{'name'}); + if (defined($result)) { + return $result; + } + } + + my ($is_balancer,$otherserver); + + if ($handle eq '') { + unless ((($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) || + ($requrl =~ m{^/public/$match_domain/$match_courseid/syllabus}) || + ($requrl =~ m{^/adm/help/}) || + ($requrl =~ m{^/res/$match_domain/$match_username/})) { + $r->log_reason("Cookie not valid", $r->filename); + } + } elsif ($handle ne '') { + +# ------------------------------------------------------ Initialize Environment + my $lonidsdir=$r->dir_config('lonIDsDir'); + &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); + +# --------------------------------------------------------- Initialize Language + + &Apache::lonlocal::get_language_handle($r); + + } + +# -------------------------------------------------- Should be a valid user now + if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') { +# -------------------------------------------------------------- Resource State + + my ($cdom,$cnum); + if ($env{'request.course.id'}) { + $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; + $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; + } + if ($requrl=~/^\/+(res|uploaded)\//) { + $env{'request.state'} = "published"; + } else { + $env{'request.state'} = 'unknown'; + } + $env{'request.filename'} = $r->filename; + $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl); + my ($suppext,$checkabsolute); + if ($requrl =~ m{^/adm/wrapper/ext/}) { + my $query = $r->args; + if ($query) { + my $preserved; + foreach my $pair (split(/&/,$query)) { + my ($name, $value) = split(/=/,$pair); + unless ($name eq 'symb') { + $preserved .= $pair.'&'; + } + if (($env{'request.course.id'}) && ($name eq 'folderpath')) { + if ($value =~ /^supplemental/) { + $suppext = 1; + } + } + } + $preserved =~ s/\&$//; + if ($preserved) { + $env{'request.external.querystring'} = $preserved; + } + } + if ($env{'request.course.id'}) { + $checkabsolute = 1; + } + } elsif ($env{'request.course.id'} && + (($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) || + ($requrl eq "/public/$cdom/$cnum/syllabus") || + ($requrl =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}))) { + my $query = $r->args; + if ($query) { + foreach my $pair (split(/&/,$query)) { + my ($name, $value) = split(/=/,$pair); + if ($name eq 'folderpath') { + if ($value =~ /^supplemental/) { + $suppext = 1; + } + } + } + } + if ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}) { + $checkabsolute = 1; + } + } + if ($checkabsolute) { + my $hostname = $r->hostname(); + my $lonhost = &Apache::lonnet::host_from_dns($hostname); + if ($lonhost) { + my $actual = &Apache::lonnet::absolute_url($hostname); + my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname; + unless ($actual eq $expected) { + $env{'request.use_absolute'} = $expected; + } + } + } +# -------------------------------------------------------- Load POST parameters + + &Apache::lonacc::get_posted_cgi($r); + +# ------------------------------------------------------ Check if load balancer + + my $checkexempt; + if ($env{'user.loadbalexempt'} eq $r->dir_config('lonHostID')) { + if ($env{'user.loadbalcheck.time'} + 600 > time) { + $checkexempt = 1; + } + } + if ($env{'user.noloadbalance'} eq $r->dir_config('lonHostID')) { + $checkexempt = 1; + } + unless ($checkexempt) { + ($is_balancer,$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 = $found_server; + } + } + } + } + if ($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'} = $r->uri; + } + } + if ($requrl=~m{^/+tiny/+$match_domain/+\w+$}) { + return OK; + } +# ---------------------------------------------------------------- Check access + my $now = time; + if ($requrl !~ m{^/(?:adm|public|prtspool)/} + || $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) { + my $access=&Apache::lonnet::allowed('bre',$requrl); + if ($handle eq '') { + unless ($access eq 'F') { + if ($requrl =~ m{^/res/$match_domain/$match_username/}) { + $r->log_reason("Cookie not valid", $r->filename); + } + } + } + if ($access eq '1') { + $env{'user.error.msg'}="$requrl:bre:0:0:Choose Course"; + return HTTP_NOT_ACCEPTABLE; + } + if ($access eq 'A') { + &Apache::restrictedaccess::setup_handler($r); + return OK; + } + if ($access eq 'B') { + &Apache::blockedaccess::setup_handler($r); + return OK; + } + if (($access ne '2') && ($access ne 'F')) { + if ($requrl =~ m{^/res/}) { + $access = &Apache::lonnet::allowed('bro',$requrl); + if ($access ne 'F') { + if ($requrl eq '/res/lib/templates/simpleproblem.problem/smpedit') { + $access = &Apache::lonnet::allowed('bre','/res/lib/templates/simpleproblem.problem'); + if ($access ne 'F') { + $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; + return HTTP_NOT_ACCEPTABLE; + } + } else { + $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; + return HTTP_NOT_ACCEPTABLE; + } + } + } elsif (($handle =~ /^publicuser_\d+$/) && (&Apache::lonnet::is_portfolio_url($requrl))) { + my $clientip = $r->get_remote_host(); + if (&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip) ne 'F') { + $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; + return HTTP_NOT_ACCEPTABLE; + } + } else { + $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; + return HTTP_NOT_ACCEPTABLE; + } + } + } + if ($requrl =~ m|^/prtspool/|) { + my $start='/prtspool/'.$env{'user.name'}.'_'. + $env{'user.domain'}; + if ($requrl !~ /^\Q$start\E/) { + $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; + return HTTP_NOT_ACCEPTABLE; + } + } + if ($requrl =~ m|^/zipspool/|) { + my $start='/zipspool/zipout/'.$env{'user.name'}.":". + $env{'user.domain'}; + if ($requrl !~ /^\Q$start\E/) { + $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; + return HTTP_NOT_ACCEPTABLE; + } + } + if ($env{'user.name'} eq 'public' && + $env{'user.domain'} eq 'public' && + $requrl !~ m{^/+(res|public|uploaded)/} && + $requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x && + $requrl !~ m{^/adm/blockingstatus/.*$} && + $requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) { + $env{'request.querystring'}=$r->args; + $env{'request.firsturl'}=$requrl; + return FORBIDDEN; + } +# ------------------------------------------------------------- This is allowed + if ($env{'request.course.id'}) { + &Apache::lonnet::countacc($requrl); + $requrl=~/\.(\w+)$/; + my $query=$r->args; + 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/$cnum/\d+/ext\.tool$})) { +# ------------------------------------- This is serious stuff, get symb and log + my $symb; + if ($query) { + &Apache::loncommon::get_unprocessed_cgi($query,['symb','folderpath']); + } + if ($env{'form.symb'}) { + $symb=&Apache::lonnet::symbclean($env{'form.symb'}); + if ($requrl =~ m|^/adm/wrapper/| + || $requrl =~ m|^/adm/coursedocs/showdoc/|) { + my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); + &Apache::lonnet::symblist($map,$murl => [$murl,$mid], + 'last_known' =>[$murl,$mid]); + } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) || + (($requrl=~m|(.*)/smpedit$|) && + &Apache::lonnet::symbverify($symb,$1)) || + (($requrl=~m|(.*/aboutme)/portfolio$|) && + &Apache::lonnet::symbverify($symb,$1))) { + my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); + &Apache::lonnet::symblist($map,$murl => [$murl,$mid], + 'last_known' =>[$murl,$mid]); + } else { + $r->log_reason('Invalid symb for '.$requrl.': '. + $symb); + $env{'user.error.msg'}= + "$requrl:bre:1:1:Invalid Access"; + return HTTP_NOT_ACCEPTABLE; + } + } else { + if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) { + $requrl = $1; + } + unless ($suppext) { + $symb=&Apache::lonnet::symbread($requrl); + if (&Apache::lonnet::is_on_map($requrl) && $symb && + !&Apache::lonnet::symbverify($symb,$requrl)) { + $r->log_reason('Invalid symb for '.$requrl.': '.$symb); + $env{'user.error.msg'}= + "$requrl:bre:1:1:Invalid Access"; + return HTTP_NOT_ACCEPTABLE; + } + if ($symb) { + my ($map,$mid,$murl)= + &Apache::lonnet::decode_symb($symb); + &Apache::lonnet::symblist($map,$murl =>[$murl,$mid], + 'last_known' =>[$murl,$mid]); + } + } + } + $env{'request.symb'}=$symb; + &Apache::lonnet::courseacclog($symb); + } else { +# ------------------------------------------------------- This is other content + &Apache::lonnet::courseacclog($requrl); + } + if ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/.+\.html?$}) { + if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) { + if ($query) { + &Apache::loncommon::get_unprocessed_cgi($query,['forceedit']); + if ($env{'form.forceedit'}) { + $env{'request.state'} = 'edit'; + } + } + } + } elsif ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/portfolio/syllabus/.+\.html?$}) { + if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) { + if ($query) { + &Apache::loncommon::get_unprocessed_cgi($query,['forceedit','editmode']); + if (($env{'form.forceedit'}) || ($env{'form.editmode'})) { + $env{'request.state'} = 'edit'; + } + } + } + } + } + return OK; + } else { + my $defdom=$r->dir_config('lonDefDomain'); + ($is_balancer,$otherserver) = + &Apache::lonnet::check_loadbalancing(undef,$defdom); + if ($is_balancer) { + $r->set_handlers('PerlResponseHandler'=> + [\&Apache::switchserver::handler]); + if ($otherserver ne '') { + $env{'form.otherserver'} = $otherserver; + } + } + } +# -------------------------------------------- See if this is a public resource + if ($requrl=~m|^/+adm/+help/+|) { + return OK; + } +# ------------------------------------ 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,$clientip); + if ($access eq 'A') { + &Apache::restrictedaccess::setup_handler($r); + return OK; + } + if (($access ne '2') && ($access ne 'F')) { + $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; + return HTTP_NOT_ACCEPTABLE; + } + } + +# -------------------------------------------------------------- Not authorized + $requrl=~/\.(\w+)$/; +# if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || +# ($requrl=~/^\/adm\/(roles|logout|email|menu|remote)/) || +# ($requrl=~m|^/prtspool/|)) { +# -------------------------- Store where they wanted to go and get login screen + $env{'request.querystring'}=$r->args; + $env{'request.firsturl'}=$requrl; + return FORBIDDEN; +# } else { +# --------------------------------------------------------------------- Goodbye +# return HTTP_BAD_REQUEST; +# } +} + +1; +__END__ + +=pod + +=back + =cut +