--- loncom/auth/lonacc.pm 2005/07/07 05:53:35 1.67 +++ loncom/auth/lonacc.pm 2024/02/28 20:31:02 1.159.2.21.2.6 @@ -1,7 +1,7 @@ # The LearningOnline Network # Cookie Based Access Handler # -# $Id: lonacc.pm,v 1.67 2005/07/07 05:53:35 albertel Exp $ +# $Id: lonacc.pm,v 1.159.2.21.2.6 2024/02/28 20:31:02 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -27,6 +27,71 @@ # ### +=head1 NAME + +Apache::lonacc - Cookie Based Access Handler + +=head1 SYNOPSIS + +Invoked (for various locations) by /etc/httpd/conf/srm.conf: + + PerlAccessHandler Apache::lonacc + +=head1 INTRODUCTION + +This module enables cookie based authentication and is used +to control access for many different LON-CAPA URIs. + +Whenever the client sends the cookie back to the server, +this cookie is handled by either lonacc.pm or loncacc.pm +(see srm.conf for what is invoked when). If +the cookie is missing or invalid, the user is re-challenged +for login information. + +This is part of the LearningOnline Network with CAPA project +described at http://www.lon-capa.org. + +=head1 HANDLER SUBROUTINE + +This routine is called by Apache and mod_perl. + +=over 4 + +=item * + +transfer profile into environment + +=item * + +load POST parameters + +=item * + +check access + +=item * + +if allowed, get symb, log, generate course statistics if applicable + +=item * + +otherwise return error + +=item * + +see if public resource + +=item * + +store attempted access + +=back + +=head1 NOTABLE SUBROUTINES + +=cut + + package Apache::lonacc; use strict; @@ -35,150 +100,1158 @@ use Apache::File; use Apache::lonnet; use Apache::loncommon(); use Apache::lonlocal; -use CGI::Cookie(); +use Apache::restrictedaccess(); +use Apache::blockedaccess(); +use Apache::lonprotected(); 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) { + $value=~s/[\r\n]$//; + } + } + if ($fname =~ /\.(xls|doc|ppt)(x|m)$/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. + + In the case where the session was started from /adm/launch/tiny/$domain/$id, + i.e., for a protected link, with launch from another CMS, and user information + is accepted from the LTI payload, then, if the user has privileged roles, + authentication will be required. If SSO authentication is with a username + and/or domain that differ from the username in the LTI payload and domain + in the launch URL, then $r->user() will be unset and /adm/relaunch will be + called. + +=cut + +sub sso_login { + my ($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','origurl','ttoken', + 'ltoken','linkkey','logtoken','sso','lcssowin'); + &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 ($linkprot,$linkprotuser,$linkprotexit,$linkkey,$deeplinkurl, + $linkprotpbid,$linkprotpburl); + +# +# If Shibboleth auth is in use, and a dual SSO and non-SSO login page +# is in use, then the query string will contain the logtoken item with +# a value set to the name of a .tmp file in /home/httpd/perl/tmp +# containing the url to display after authentication, and also, +# optionally, role and symb, or linkprot or linkkey (deep-link access). +# +# If Shibboleth auth is in use, but a dual log-in page is not in use, +# and the originally requested URL was /tiny/$domain/$id (i.e., +# for deeplinking), then the query string will contain the sso item +# with a value set to the name of a .tmp file in /home/httpd/perl/tmp +# containing the url to display after authentication, and also, +# optionally, linkprot or linkkey (deep-link access). +# +# Otherwise the query string may contain role and symb, or if the +# originally requested URL was /tiny/$domain/$id (i.e. for deeplinking) +# then the query string may contain a ttoken item with a value set +# to the name of a .tmp file in /home/httpd/perl/tmp containing either +# linkprot or linkkey (deep-link access). +# +# If deep-linked, i.e., the originally requested URL was /tiny/$domain/$id +# the linkkey may have originally been sent in POSTed data, which will +# have been processed in lontrans.pm +# + + if ($form{'ttoken'}) { + my %info = &Apache::lonnet::tmpget($form{'ttoken'}); + &Apache::lonnet::tmpdel($form{'ttoken'}); + if ($info{'origurl'}) { + $form{'origurl'} = $info{'origurl'}; + if ($form{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) { + $deeplinkurl = $form{'origurl'}; + } + } + if ($info{'linkprot'}) { + $linkprot = $info{'linkprot'}; + $linkprotuser = $info{'linkprotuser'}; + $linkprotexit = $info{'linkprotexit'}; + $linkprotpbid = $info{'linkprotpbid'}; + $linkprotpburl = $info{'linkprotpburl'}; + } elsif ($info{'linkkey'} ne '') { + $linkkey = $info{'linkkey'}; + } + } elsif ($form{'logtoken'}) { + my ($firsturl,@rest); + my $lonhost = $r->dir_config('lonHostID'); + my $tmpinfo = &Apache::lonnet::reply('tmpget:'.$form{'logtoken'},$lonhost); + my $delete = &Apache::lonnet::tmpdel($form{'logtoken'}); + unless (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') || + ($tmpinfo eq 'no_such_host')) { + (undef,$firsturl,@rest) = split(/&/,$tmpinfo); + if ($firsturl ne '') { + $firsturl = &unescape($firsturl); + } + foreach my $item (@rest) { + my ($key,$value) = split(/=/,$item); + $form{$key} = &unescape($value); + } + if ($firsturl =~ m{^/tiny/$match_domain/\w+$}) { + $form{'origurl'} = $firsturl; + $deeplinkurl = $firsturl; + } elsif ($firsturl eq '/adm/email') { + $form{'origurl'} = $firsturl; + } + if ($form{'linkprot'}) { + $linkprot = $form{'linkprot'}; + $linkprotuser = $form{'linkprotuser'}; + $linkprotexit = $form{'linkprotexit'}; + $linkprotpbid = $form{'linkprotpbid'}; + $linkprotpburl = $form{'linkprotpburl'}; + } elsif ($form{'linkkey'} ne '') { + $linkkey = $form{'linkkey'}; + } + if ($form{'iptoken'}) { + %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'}); + my $delete = &Apache::lonnet::tmpdel($form{'iptoken'}); + } + } + } elsif ($form{'sso'}) { + my $lonhost = $r->dir_config('lonHostID'); + my $info = &Apache::lonnet::reply('tmpget:'.$form{'sso'},$lonhost); + &Apache::lonnet::tmpdel($form{'sso'}); + unless (($info=~/^error/) || ($info eq 'con_lost') || + ($info eq 'no_such_host')) { + my ($firsturl,@rest)=split(/\&/,$info); + if ($firsturl ne '') { + $form{'origurl'} = &unescape($firsturl); + if ($form{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) { + $deeplinkurl = $form{'origurl'}; + } + } + foreach my $item (@rest) { + my ($key,$value) = split(/=/,$item); + $form{$key} = &unescape($value); + } + if ($form{'linkprot'}) { + $linkprot = $form{'linkprot'}; + $linkprotuser = $form{'linkprotuser'}; + $linkprotexit = $form{'linkprotexit'}; + $linkprotpbid = $form{'linkprotpbid'}; + $linkprotpburl = $form{'linkprotpburl'}; + } elsif ($form{'linkkey'} ne '') { + $linkkey = $form{'linkkey'}; + } + } + } elsif ($form{'ltoken'}) { + my %link_info = &Apache::lonnet::tmpget($form{'ltoken'}); + $linkprot = $link_info{'linkprot'}; + if ($linkprot) { + if ($link_info{'linkprotuser'} ne '') { + $linkprotuser = $link_info{'linkprotuser'}; + } + if ($link_info{'linkprotexit'} ne '') { + $linkprotexit = $link_info{'linkprotexit'}; + } + if ($link_info{'linkprotpbid'} ne '') { + $linkprotpbid = $link_info{'linkprotpbid'}; + } + if ($link_info{'linkprotpburl'} ne '') { + $linkprotpburl = $link_info{'linkprotpburl'}; + } + } + my $delete = &Apache::lonnet::tmpdel($form{'ltoken'}); + delete($form{'ltoken'}); + if ($form{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) { + $deeplinkurl = $form{'origurl'}; + } + } elsif ($form{'linkkey'} ne '') { + $linkkey = $form{'linkkey'}; + } + + my $domain = $r->dir_config('lonSSOUserDomain'); + if ($domain eq '') { + $domain = $r->dir_config('lonDefDomain'); + } + if (($deeplinkurl) && ($linkprot) && ($linkprotuser ne '')) { + unless ($linkprotuser eq $user.':'.$domain) { + $r->user(); + my %data = ( + origurl => $deeplinkurl, + linkprot => $linkprot, + linkprotuser => $linkprotuser, + linkprotexit => $linkprotexit, + linkprotpbid => $linkprotpbid, + linkprotpburl => $linkprotpburl, + ); + if ($env{'form.lcssowin'}) { + $data{'lcssowin'} = $env{'form.lcssowin'}; + } + my $token = &Apache::lonnet::tmpput(\%data,$r->dir_config('lonHostID'),'link'); + unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) || + ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) { + $r->internal_redirect('/adm/relaunch?rtoken='.$token); + $r->set_handlers('PerlHandler'=> undef); + return OK; + } + } + } + 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) { + $otherserver = &Apache::lonnet::spareserver($r,$lowest_load,$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 (($form{'symb'}) || ($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'} = $linkprot; + if ($linkprotuser ne '') { + $env{'request.linkprotuser'} = $linkprotuser; + } + if ($linkprotexit ne '') { + $env{'request.linkprotexit'} = $linkprotexit; + } + if ($linkprotpbid ne '') { + $env{'request.linkprotpbid'} = $linkprotpbid; + } + if ($linkprotpburl ne '') { + $env{'request.linkprotpburl'} = $linkprotpburl; + } + } elsif ($linkkey ne '') { + $env{'request.linkkey'} = $linkkey; + } + } + if (($r->uri eq '/adm/sso') && ($form{'origurl'} eq '/adm/email')) { + if ($form{'display'} && ($env{'form.mailrecip'} eq $user.':'.$domain)) { + $env{'request.display'} = $form{'display'}; + $env{'request.mailrecip'} = $env{'form.mailrecip'}; + } + } + $env{'request.sso.login'} = 1; + if (defined($r->dir_config("lonSSOReloginServer"))) { + $env{'request.sso.reloginserver'} = + $r->dir_config('lonSSOReloginServer'); + } + my $redirecturl = '/adm/switchserver'; + if ($otherserver ne '') { + $redirecturl .= '?otherserver='.$otherserver; + } + if ($form{'lcssowin'}) { + $redirecturl .= (($redirecturl=~/\?/)?'&':'?') . 'lcssowin=1'; + } + $r->internal_redirect($redirecturl); + $r->set_handlers('PerlHandler'=> undef); + } else { + # need to login them in, so generate the need data that + # migrate expects to do login + my $ip = &Apache::lonnet::get_requestor_ip($r); + my %info=('ip' => $ip, + 'domain' => $domain, + 'username' => $user, + 'server' => $r->dir_config('lonHostID'), + 'sso.login' => 1 + ); + foreach my $item ('role','symb','iptoken','origurl','lcssowin') { + if (exists($form{$item})) { + $info{$item} = $form{$item}; + } elsif ($sessiondata{$item} ne '') { + $info{$item} = $sessiondata{$item}; + } + } + 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'} = $linkprot; + if ($linkprotuser ne '') { + $info{'linkprotuser'} = $linkprotuser; + } + if ($linkprotexit ne '') { + $info{'linkprotexit'} = $linkprotexit; + } + if ($linkprotpbid ne '') { + $info{'linkprotpbid'} = $linkprotpbid; + } + if ($linkprotpburl ne '') { + $info{'linkprotpburl'} = $linkprotpburl; + } + } elsif ($linkkey ne '') { + $info{'linkkey'} = $linkkey; + } + } + if (($r->uri eq '/adm/sso') && ($form{'origurl'} eq '/adm/email')) { + if ($form{'display'} && ($form{'mailrecip'} eq $user.':'.$domain)) { + $info{'display'} = &escape($form{'display'}); + $info{'mailrecip'} = &escape($form{'mailrecip'}); + } + } + 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'),'sso'); + $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)) { +#FIXME - need to preserve origurl, role and symb, or linkprot or linkkey for use after account +# creation. If lcssowin is 1, createaccount needs to close pop-up and display in main window. + $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; - 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") && ($handle ne '')) { -# ------------------------------------------------------ Initialize Environment + if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) { + return OK; + } + + if (&Apache::lonnet::is_domainimage($requrl)) { + return OK; + } - &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); + 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/}) || ($requrl eq '/adm/sso') || + ($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($r); + &Apache::lonlocal::get_language_handle($r); + } + +# -------------------------------------------------- Should be a valid user now + if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') { # -------------------------------------------------------------- Resource State - if ($requrl=~/^\/+(res|uploaded)\//) { - $env{'request.state'} = "published"; - } else { - $env{'request.state'} = 'unknown'; + my ($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 (($name eq 'symb') || ($name eq 'usehttp')) { + $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/) { + $suppext = 1; + } + last; + } + } + } + if ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}) { + $checkabsolute = 1; } - $env{'request.filename'} = $r->filename; - $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl); + } + if ($checkabsolute) { + my $hostname = $r->hostname(); + my $lonhost = &Apache::lonnet::host_from_dns($hostname); + if ($lonhost) { + my $actual = &Apache::lonnet::absolute_url($hostname,1,1); + my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname; + unless ($actual eq $expected) { + $env{'request.use_absolute'} = $expected; + } + } + } # -------------------------------------------------------- Load POST parameters - &Apache::loncommon::get_posted_cgi($r); + &Apache::lonacc::get_posted_cgi($r); -# ---------------------------------------------------------------- Check access +# ------------------------------------------------------ Check if load balancer - if ($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; + 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) || (($requrl eq '/adm/switchserver') && (!$r->is_initial_req()))) { + ($is_balancer,$otherserver) = + &Apache::lonnet::check_loadbalancing($env{'user.name'}, + $env{'user.domain'}); + if ($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) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) { + $otherserver = $found_server; + } + unless ($requrl eq '/adm/switchserver') { + $r->set_handlers('PerlResponseHandler'=> + [\&Apache::switchserver::handler]); + } + if ($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/+$match_domain/+\w+$}) { + if ($r->args) { + &Apache::loncommon::get_unprocessed_cgi($r->args,['ttoken']); + if (defined($env{'form.ttoken'})) { + my %info = &Apache::lonnet::tmpget($env{'form.ttoken'}); + if (($info{'origurl'} ne '') && ($info{'origurl'} eq $requrl)) { + my %data; + if (($info{'linkprotuser'} ne '') && ($info{'linkprot'}) && + ($info{'linkprotuser'} ne $env{'user.name'}.':'.$env{'user.domain'})) { + %data = ( + origurl => $requrl, + linkprot => $info{'linkprot'}, + linkprotuser => $info{'linkprotuser'}, + linkprotexit => $info{'linkprotexit'}, + linkprotpbid => $info{'linkprotpbid'}, + linkprotpburl => $info{'linkprotpburl'}, + ); + } elsif ($info{'ltoken'} ne '') { + my %ltoken_info = &Apache::lonnet::tmpget($info{'ltoken'}); + if (($ltoken_info{'linkprotuser'} ne '') && ($ltoken_info{'linkprot'}) && + ($ltoken_info{'linkprotuser'} ne $env{'user.name'}.':'.$env{'user.domain'})) { + %data = ( + origurl => $requrl, + linkprot => $ltoken_info{'linkprot'}, + linkprotuser => $ltoken_info{'linkprotuser'}, + linkprotexit => $ltoken_info{'linkprotexit'}, + linkprotpbid => $ltoken_info{'linkprotpbid'}, + linkprotpburl => $ltoken_info{'linkprotpburl'}, + ); + } + } + if (keys(%data)) { + my $delete = &Apache::lonnet::tmpdel($env{'form.ttoken'}); + if ($info{'ltoken'} ne '') { + my $delete = &Apache::lonnet::tmpdel($info{'ltoken'}); + } + my $token = + &Apache::lonnet::tmpput(\%data,$r->dir_config('lonHostID'),'retry'); + unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) || + ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) { + $r->internal_redirect('/adm/relaunch?rtoken='.$token); + $r->set_handlers('PerlHandler'=> undef); + return OK; + } + } + } + } + } + if ($env{'user.name'} eq 'public' && + $env{'user.domain'} eq 'public') { + $env{'request.firsturl'}=$requrl; + return FORBIDDEN; + } + return OK; + } +# ---------------------------------------------------------------- Check access + my $now = time; + my ($check_symb,$check_access,$check_block,$access,$poss_symb); + if ($requrl !~ m{^/(?:adm|public|(?:prt|zip)spool)/} + || $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) { + $check_access = 1; + } + if ((!$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'}); + } elsif (($env{'request.course.id'}) && ($r->args ne '')) { + 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; + } + } + } + if ($poss_symb) { + my ($possmap,$resid,$url)=&Apache::lonnet::decode_symb($poss_symb); + $url = &Apache::lonnet::clutter($url); + 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); + } + } + } + if ($poss_symb) { + $access=&Apache::lonnet::allowed('bre',$requrl,$poss_symb); + } else { + $access=&Apache::lonnet::allowed('bre',$requrl,'','','','',1); + } + } else { + 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; + } + } + } } + my $clientip = &Apache::lonnet::get_requestor_ip($r); + $access=&Apache::lonnet::allowed('bre',$requrl,'','',$clientip,'','',$nodeeplinkcheck); } - if ($requrl =~ m|^/prtspool/|) { - my $start='/prtspool/'.$env{'user.name'}.'_'. - $env{'user.domain'}; - if ($requrl !~ /^\Q$start\E/) { + } + if ($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/}) { + $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 ($access eq 'B') { + if ($poss_symb) { + if (&Apache::lonnet::symbverify($poss_symb,$requrl)) { + $env{'request.symb'} = $poss_symb; + } + } + &Apache::blockedaccess::setup_handler($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); + 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 $clientip = &Apache::lonnet::get_requestor_ip($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; + } + } else { $env{'user.error.msg'}="$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)/} && - $requrl !~ m{^/+adm/(roles|logout|randomlabel\.png)}) { - $env{'request.querystring'}=$r->args; - $env{'request.firsturl'}=$requrl; - return FORBIDDEN; + } + 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 ($env{'request.course.id'}) { + if ($env{'request.course.id'}) { &Apache::lonnet::countacc($requrl); - $requrl=~/\.(\w+)$/; - if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || - ($requrl=~/^\/adm\/.*\/(aboutme|navmaps|smppg|bulletinboard)(\?|$)/) || - ($requrl=~/^\/adm\/wrapper\//) || - ($requrl=~m|\.problem/smpedit$|) || - ($requrl=~/^\/public\/.*\/syllabus$/)) { + my $query=$r->args; + if ($check_symb) { # ------------------------------------- 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'}) { + my $symb; + if ($query) { + &Apache::loncommon::get_unprocessed_cgi($query,['symb','folderpath']); + } + if ($env{'form.symb'}) { $symb=&Apache::lonnet::symbclean($env{'form.symb'}); - if ($requrl =~ m|^/adm/wrapper/|) { - my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); - &Apache::lonnet::symblist($map,$murl => [$murl,$mid], - 'last_known' =>[$murl,$mid]); - } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) || + if (($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]); + } + } + } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) || (($requrl=~m|(.*)/smpedit$|) && - &Apache::lonnet::symbverify($symb,$1))) { - my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); - &Apache::lonnet::symblist($map,$murl => [$murl,$mid], - 'last_known' =>[$murl,$mid]); + &Apache::lonnet::symbverify($symb,$1)) || + (($requrl=~m|(.*/aboutme)/portfolio$|) && + &Apache::lonnet::symbverify($symb,$1))) { + my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); + if (($map =~ /\.page$/) && ($requrl !~ /\.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]); } else { $r->log_reason('Invalid symb for '.$requrl.': '. - $symb); - $env{'user.error.msg'}= - "$requrl:bre:1:1:Invalid Access"; - return HTTP_NOT_ACCEPTABLE; - } - } else { - $symb=&Apache::lonnet::symbread($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; + $symb); + $env{'user.error.msg'}= + "$requrl:bre:1:1:Invalid Access"; + return HTTP_NOT_ACCEPTABLE; } + } else { + if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) { + $requrl = $1; + } + $symb=&Apache::lonnet::symbread($requrl); + if (&Apache::lonnet::is_on_map($requrl) && $symb) { + my ($encstate,$invalidsymb); + unless (&Apache::lonnet::symbverify($symb,$requrl,\$encstate)) { + $invalidsymb = 1; + # + # 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'} && !$encstate) || (!$env{'request.enc'} && $encstate)) { + my %possibles; + my $nocache = 1; + my $oldsymb = $symb; + $symb = &Apache::lonnet::symbread($requrl,'','','',\%possibles,$nocache); + if (($symb) && ($symb ne $oldsymb)) { + if (&Apache::lonnet::symbverify($symb,$requrl)) { + 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) { + $r->internal_redirect('/adm/ambiguous'); + return OK; + } + } + if ($invalidsymb) { + 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; + } + } + } + } if ($symb) { my ($map,$mid,$murl)= &Apache::lonnet::decode_symb($symb); - &Apache::lonnet::symblist($map,$murl =>[$murl,$mid], - 'last_known' =>[$murl,$mid]); + if ($requrl eq '/adm/navmaps') { + &Apache::lonnet::symblist($map,$murl =>[$murl,$mid]); + } else { + if (($map =~ /\.page$/) && ($requrl !~ /\.page$/)) { + 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]); + } } + } + $env{'request.symb'}=$symb; + if (($env{'request.symbread.cached.'}) && ($env{'request.symbread.cached.'} ne $symb)) { + $env{'request.symbread.cached.'} = $symb; } - $env{'request.symb'}=$symb; - &Apache::lonnet::courseacclog($symb); - } else { + &Apache::lonnet::courseacclog($symb); + } else { # ------------------------------------------------------- This is other content - &Apache::lonnet::courseacclog($requrl); + &Apache::lonnet::courseacclog($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; } - } - 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); - my $cookie= - &Apache::lonauth::success($r,'public','public','public'); - my $lonidsdir=$r->dir_config('lonIDsDir'); - &Apache::lonnet::transfer_profile_to_env($lonidsdir,$cookie); - &Apache::loncommon::get_posted_cgi($r); - $env{'request.state'} = "published"; - $env{'request.publicaccess'} = 1; - $env{'request.filename'} = $r->filename; - - $r->header_out('Set-cookie',"lonID=$cookie; path=/"); - return OK; + if ($requrl=~m|^/+adm/+help/+|) { + return OK; } +# ------------------------------------ See if this is a viewable portfolio file + if (&Apache::lonnet::is_portfolio_url($requrl)) { + 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($r); + return OK; + } + if (($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') || @@ -197,64 +1270,9 @@ sub handler { 1; __END__ -=head1 NAME - -Apache::lonacc - Cookie Based Access Handler - -=head1 SYNOPSIS - -Invoked (for various locations) by /etc/httpd/conf/srm.conf: - - PerlAccessHandler Apache::lonacc - -=head1 INTRODUCTION - -This module enables cookie based authentication and is used -to control access for many different LON-CAPA URIs. - -Whenever the client sends the cookie back to the server, -this cookie is handled by either lonacc.pm or loncacc.pm -(see srm.conf for what is invoked when). If -the cookie is missing or invalid, the user is re-challenged -for login information. - -This is part of the LearningOnline Network with CAPA project -described at http://www.lon-capa.org. - -=head1 HANDLER SUBROUTINE - -This routine is called by Apache and mod_perl. - -=over 4 - -=item * - -transfer profile into environment - -=item * - -load POST parameters - -=item * - -check access - -=item * - -if allowed, get symb, log, generate course statistics if applicable - -=item * - -otherwise return error - -=item * - -see if public resource - -=item * - -store attempted access +=pod =back =cut +