--- loncom/auth/lonacc.pm 2006/07/17 19:49:14 1.87 +++ loncom/auth/lonacc.pm 2020/07/19 16:41:27 1.159.2.8.2.2 @@ -1,7 +1,7 @@ # The LearningOnline Network # Cookie Based Access Handler # -# $Id: lonacc.pm,v 1.87 2006/07/17 19:49:14 albertel Exp $ +# $Id: lonacc.pm,v 1.159.2.8.2.2 2020/07/19 16:41:27 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; @@ -36,9 +101,9 @@ use Apache::lonnet; use Apache::loncommon(); use Apache::lonlocal; use Apache::restrictedaccess(); -use CGI::Cookie(); +use Apache::blockedaccess(); use Fcntl qw(:flock); -use LONCAPA; +use LONCAPA qw(:DEFAULT :match); sub cleanup { my ($r)=@_; @@ -56,13 +121,14 @@ sub goodbye { ############################################### sub get_posted_cgi { - my ($r) = @_; + my ($r,$fields) = @_; my $buffer; if ($r->header_in('Content-length')) { $r->read($buffer,$r->header_in('Content-length'),0); } - unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) { + my $content_type = $r->header_in('Content-type'); + if ($content_type !~ m{^multipart/form-data}) { my @pairs=split(/&/,$buffer); my $pair; foreach $pair (@pairs) { @@ -71,10 +137,13 @@ sub get_posted_cgi { $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=$1; + my ($contentsep) = ($content_type =~ /boundary=\"?([^\";,]+)\"?/); my @lines = split (/\n/,$buffer); my $name=''; my $value=''; @@ -82,16 +151,37 @@ sub get_posted_cgi { my $fmime=''; my $i; for ($i=0;$i<=$#lines;$i++) { - if ($lines[$i]=~/^$contentsep/) { + if ($lines[$i]=~/^--\Q$contentsep\E/) { if ($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); + 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++; @@ -137,413 +227,593 @@ sub get_posted_cgi { $r->headers_in->unset('Content-length'); } -sub portfolio_access { - my ($r,$requrl) = @_; - my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl); - my $result = &get_portfolio_access($udom,$unum,$file_name,$group); - if ($result eq 'ok') { - return OK; - } elsif ($result =~ /^[^:]+:guest_/) { - &passphrase_access_checker($r,$result,$requrl); - return OK; +=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 FORBIDDEN; + return 'ok'; } -sub get_portfolio_access { - my ($udom,$unum,$file_name,$group) = @_; - - my $current_perms = &Apache::lonnet::get_portfile_permissions($udom,$unum); - my %access_controls = &Apache::lonnet::get_access_controls( - $current_perms,$group,$file_name); - my ($public,$guest,@domains,@users,@courses,@groups); - my $now = time; - my $access_hash = $access_controls{$file_name}; - if (ref($access_hash) eq 'HASH') { - foreach my $key (keys(%{$access_hash})) { - my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/); - if ($start > $now) { - next; - } - if ($end && $end<$now) { - next; - } - if ($scope eq 'public') { - $public = $key; - last; - } elsif ($scope eq 'guest') { - $guest = $key; - } elsif ($scope eq 'domains') { - push(@domains,$key); - } elsif ($scope eq 'users') { - push(@users,$key); - } elsif ($scope eq 'course') { - push(@courses,$key); - } elsif ($scope eq 'group') { - push(@groups,$key); - } - } - if ($public) { - return 'ok'; - } - if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') { - if ($guest) { - return $guest; - } - } else { - if (@domains > 0) { - foreach my $domkey (@domains) { - my %content = &Apache::lonnet::parse_access_controls($$access_hash{$domkey}); - if (ref($content{'dom'}) eq 'ARRAY') { - if (grep(/^\Q$env{'user.domain'}\E$/,@{$content{'dom'}})) { - 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 (@users > 0) { - foreach my $userkey (@users) { - my %content = &Apache::lonnet::parse_access_controls($$access_hash{$userkey}); - if (exists($content{'users'}{$env{'user.name'}.':'.$env{'user.domain'}})) { - return 'ok'; - } + } + 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'} = $r->uri; } } - my %roleshash; - my @courses_and_groups = @courses; - push(@courses_and_groups,@groups); - if (@courses_and_groups > 0) { - my (%allgroups,%allroles); - my ($start,$end,$role,$sec,$group); - foreach my $envkey (%env) { - if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./([^/]+)/([^/]+)/?([^/]*)$-) { - my $cid = $2.'_'.$3; - if ($1 eq 'gr') { - $group = $4; - $allgroups{$cid}{$group} = $env{$envkey}; - } else { - if ($4 eq '') { - $sec = 'none'; - } else { - $sec = $4; - } - $allroles{$cid}{$1}{$sec} = $env{$envkey}; - } - } elsif ($envkey =~ m-^user\.role\./cr/(\w+/\w+/\w*)./([^/]+)/([^/]+)/?([^/]*)$-) { - my $cid = $2.'_'.$3; - if ($4 eq '') { - $sec = 'none'; - } else { - $sec = $4; - } - $allroles{$cid}{$1}{$sec} = $env{$envkey}; - } + $env{'request.sso.login'} = 1; + if (defined($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}; } - if (keys(%allroles) == 0) { - return; - } - foreach my $key (@courses_and_groups) { - my %content = &Apache::lonnet::parse_access_controls($$access_hash{$key}); - my $cnum = $content{'number'}; - my $cdom = $content{'domain'}; - my $cid = $cdom.'_'.$cnum; - if (!exists($allroles{$cid})) { - next; - } - foreach my $role_id (keys(%{$content{'roles'}})) { - my @sections = @{$content{'roles'}{$role_id}{'section'}}; - my @groups = @{$content{'roles'}{$role_id}{'group'}}; - my @status = @{$content{'roles'}{$role_id}{'access'}}; - my @roles = @{$content{'roles'}{$role_id}{'role'}}; - foreach my $role (keys(%{$allroles{$cid}})) { - if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) { - foreach my $sec (keys(%{$allroles{$cid}{$role}})) { - if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') { - if (grep/^all$/,@sections) { - return 'ok'; - } else { - if (grep/^$sec$/,@sections) { - return 'ok'; - } - } - } - } - if (keys(%{$allgroups{$cid}}) == 0) { - if (grep/^none$/,@groups) { - return 'ok'; - } - } else { - if (grep/^all$/,@groups) { - return 'ok'; - } - foreach my $group (keys(%{$allgroups{$cid}})) { - if (grep/^$group$/,@groups) { - return 'ok'; - } - } - } - } - } - } + } + unless ($info{'symb'}) { + unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) { + $info{'origurl'} = $r->uri; } } - if ($guest) { - return $guest; + if ($r->dir_config("ssodirecturl") == 1) { + $info{'origurl'} = $r->uri; } - } - } - return; -} - -sub passphrase_access_checker { - my ($r,$guestkey,$requrl) = @_; - my ($num,$scope,$end,$start) = ($guestkey =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/); - if ($scope eq 'guest') { - if (exists($env{'user.passphrase_access_'.$requrl})) { - if (($env{'user.passphrase_access_'.$requrl} == 0) || - ($env{'user.passphrase_access_'.$requrl} > time)) { - $env{'request.publicaccess'} = 1; - return 'ok'; + if (defined($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'}); + } } } - } - $r->set_handlers('PerlHandler'=> \&Apache::restrictedaccess::handler); - $r->content_type('perl-script'); - return; -} - -sub course_group_datechecker { - my ($dates,$now,$status) = @_; - my ($start,$end) = split(/\./,$dates); - if (!$start && !$end) { - return 'ok'; - } - if (grep/^active$/,@{$status}) { - if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) { - return 'ok'; - } - } - if (grep/^previous$/,@{$status}) { - if ($end > $now ) { - return 'ok'; - } - } - if (grep/^future$/,@{$status}) { - if ($start > $now) { - return 'ok'; + if ((grep(/^sso$/,@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')); + $r->set_handlers('PerlHandler'=> undef); + } + return OK; } } - return; -} - -sub parse_portfolio_url { - my ($url) = @_; - - my ($type,$udom,$unum,$group,$file_name); - - if ($url =~ m-/+uploaded/([^/]+)/([^/]+)/portfolio(/.+)$-) { - $type = 1; - $udom = $1; - $unum = $2; - $file_name = $3; - } elsif ($url =~ m-/+uploaded/([^/]+)/([^/]+)/groups/([^/]+)/portfolio/(.+)$-) { - $type = 2; - $udom = $1; - $unum = $2; - $group = $3; - $file_name = $3.'/'.$4; - } - if (wantarray) { - return ($type,$udom,$unum,$file_name,$group); - } - return $type; -} - -sub is_portfolio_url { - my ($url) = @_; - return scalar(&parse_portfolio_url($url)); + 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; - my $lonidsdir=$r->dir_config('lonIDsDir'); - my $handle; - if ($lonid) { - $handle=$lonid->value; - $handle=~s/\W//g; - } - - my ($sso_login); - if ($r->user - && (!$lonid || !-e "$lonidsdir/$handle.id" || $handle eq '') ) { - $sso_login = 1; - my $domain = $r->dir_config('lonDefDomain'); - my $home=&Apache::lonnet::homeserver($r->user,$domain); - if ($home !~ /(con_lost|no_such_host)/) { - $handle=&Apache::lonauth::success($r,$r->user,$domain, - $home,'noredirect'); - $r->header_out('Set-cookie',"lonID=$handle; path=/"); - } + if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) { + return OK; } - if ($sso_login) { - &Apache::lonnet::appenv('request.sso.login' => 1); + if (&Apache::lonnet::is_domainimage($requrl)) { + return OK; } - if ($r->dir_config("lonBalancer") eq 'yes') { - $r->set_handlers('PerlResponseHandler'=> - [\&Apache::switchserver::handler]); + 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 $result; + } } - if ($handle ne '') { - if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) { + my ($is_balancer,$otherserver); -# ------------------------------------------------------ Initialize Environment + if ($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 '') { - &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); +# ------------------------------------------------------ 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; } - $env{'request.filename'} = $r->filename; - $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl); + } elsif ($env{'request.course.id'} && + (($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) || + ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}))) { + 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 $exphostname = &Apache::lonnet::hostname($lonhost); + 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); + &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 $now = time; - if (&is_portfolio_url($requrl)) { - return &portfolio_access($r,$requrl); - } - 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 $now = time; + if ($requrl !~ m{^/(?:adm|public|(?:prt|zip)spool)/} + || $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/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", $r->filename); + } } } - if ($requrl =~ m|^/prtspool/|) { - my $start='/prtspool/'.$env{'user.name'}.'_'. - $env{'user.domain'}; - if ($requrl !~ /^\Q$start\E/) { + if ($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 ($env{'user.name'} eq 'public' && - $env{'user.domain'} eq 'public' && - $requrl !~ m{^/+(res|public)/} && - $requrl !~ m{^/+adm/(help|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\//) || - ($requrl=~m|^/adm/coursedocs/showdoc/|) || - ($requrl=~m|\.problem/smpedit$|) || - ($requrl=~/^\/public\/.*\/syllabus$/)) { + $requrl=~/\.(\w+)$/; + 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/|) || + ($requrl=~m|\.problem/smpedit$|) || + ($requrl=~/^\/public\/.*\/syllabus$/) || + ($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) || + ($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/)) { # ------------------------------------- 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/| - || $requrl =~ m|^/adm/coursedocs/showdoc/|) { + if ($requrl eq '/adm/navmaps') { my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); - &Apache::lonnet::symblist($map,$murl => [$murl,$mid], + &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)) || + } 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; } - if ($symb) { - my ($map,$mid,$murl)= - &Apache::lonnet::decode_symb($symb); - &Apache::lonnet::symblist($map,$murl =>[$murl,$mid], - 'last_known' =>[$murl,$mid]); + } else { + if ($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($symb); + if ($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; - &Apache::lonnet::courseacclog($symb); - } else { + } + $env{'request.symb'}=$symb; + &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); - &Apache::lonlocal::get_language_handle($r); - my $cookie= - &Apache::lonauth::success($r,'public','public','public'); - my $lonidsdir=$r->dir_config('lonIDsDir'); - &Apache::lonnet::transfer_profile_to_env($lonidsdir,$cookie); - &Apache::lonacc::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 ($requrl=~m|^/+adm/+help/+|) { - return OK; + return OK; } -# ------------------------------------- See if this is a viewable portfolio file - if (&is_portfolio_url($requrl)) { - return &portfolio_access($r,$requrl); +# ------------------------------------ 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 @@ -564,64 +834,9 @@ 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 +