--- loncom/auth/lonacc.pm 2013/05/10 17:49:17 1.144 +++ loncom/auth/lonacc.pm 2016/08/07 20:49:37 1.159.2.3 @@ -1,7 +1,7 @@ # The LearningOnline Network # Cookie Based Access Handler # -# $Id: lonacc.pm,v 1.144 2013/05/10 17:49:17 raeburn Exp $ +# $Id: lonacc.pm,v 1.159.2.3 2016/08/07 20:49:37 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -89,8 +89,6 @@ store attempted access =head1 NOTABLE SUBROUTINES -=over - =cut @@ -103,7 +101,7 @@ use Apache::lonnet; use Apache::loncommon(); use Apache::lonlocal; use Apache::restrictedaccess(); -use Apache::blockedaccess(); +use Apache::blockedaccess(); use Fcntl qw(:flock); use LONCAPA qw(:DEFAULT :match); @@ -111,7 +109,6 @@ sub cleanup { my ($r)=@_; if (! $r->is_initial_req()) { return DECLINED; } &Apache::lonnet::save_cache(); - &Apache::lontexconvert::jsMath_reset(); return OK; } @@ -162,6 +159,8 @@ sub get_posted_cgi { if (length($value) == 1) { $value=~s/[\r\n]$//; } + } elsif ($fname =~ /\.(xls|doc|ppt)x$/i) { + $value=~s/[\r\n]$//; } if (ref($fields) eq 'ARRAY') { next if (!grep(/^\Q$name\E$/,@{$fields})); @@ -230,6 +229,8 @@ sub get_posted_cgi { =pod +=over + =item upload_size_allowed() Perform size checks for file uploads to essayresponse items in course context. @@ -264,30 +265,39 @@ sub upload_size_allowed { =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 - returns OK if it was a SSO and user was handled - undef if not SSO or no means to hanle the 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) = @_; + my ($r,$handle,$username) = @_; my $lonidsdir=$r->dir_config('lonIDsDir'); - if (($r->user eq '') || + if (($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) = ($r->user =~ m/([a-zA-Z0-9_\-@.]*)/); + my ($user) = ($r->user =~ m/^($match_username)$/); + if ($user eq '') { + return undef; + } my $query = $r->args; my %form; if ($query) { - my @items = ('role','symb'); + my @items = ('role','symb','iptoken'); &Apache::loncommon::get_unprocessed_cgi($query,\@items); foreach my $item (@items) { if (defined($env{'form.'.$item})) { @@ -296,6 +306,15 @@ sub sso_login { } } + my %sessiondata; + if ($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'); @@ -303,8 +322,18 @@ sub sso_login { 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,$otherserver) = - &Apache::lonnet::check_loadbalancing($user,$domain); + my ($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); + } + if ($is_balancer) { # login but immediately go to switch server to find us a new # machine @@ -323,17 +352,30 @@ sub sso_login { } else { # need to login them in, so generate the need data that # migrate expects to do login - my %info=('ip' => $r->connection->remote_ip(), + my $ip; + my $c = $r->connection; + eval { + $ip = $c->remote_ip(); + }; + if ($@) { + $ip = $c->client_ip(); + } + my %info=('ip' => $ip, 'domain' => $domain, 'username' => $user, 'server' => $r->dir_config('lonHostID'), 'sso.login' => 1 ); - foreach my $item ('role','symb') { + 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; } @@ -349,10 +391,8 @@ sub sso_login { $r->set_handlers('PerlHandler'=> undef); } return OK; - } elsif (defined($r->dir_config('lonSSOUserUnknownRedirect'))) { + } else { &Apache::lonnet::logthis(" SSO authorized unknown user $user "); - $r->subprocess_env->set('SSOUserUnknown' => $user); - $r->subprocess_env->set('SSOUserDomain' => $domain); my @cancreate; my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$domain); @@ -366,13 +406,18 @@ sub sso_login { } } } - if (grep(/^sso$/,@cancreate)) { - $r->internal_redirect('/adm/createaccount'); - } else { - $r->internal_redirect($r->dir_config('lonSSOUserUnknownRedirect')); + 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; } - $r->set_handlers('PerlHandler'=> undef); - return OK; } return undef; } @@ -380,26 +425,33 @@ sub sso_login { sub handler { my $r = shift; my $requrl=$r->uri; - if (&Apache::lonnet::is_domainimage($requrl)) { + + if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) { return OK; } - if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) { + if (&Apache::lonnet::is_domainimage($requrl)) { return OK; } - my $handle = &Apache::lonnet::check_for_valid_session($r); + my %user; + my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user); - my $result = &sso_login($r,$handle); - if (defined($result)) { - return $result; + unless (($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())) { - $r->log_reason("Cookie $handle not valid", $r->filename); + unless ((($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 '') { @@ -429,7 +481,7 @@ sub handler { } $env{'request.filename'} = $r->filename; $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl); - my $suppext; + my ($suppext,$checkabsolute); if ($requrl =~ m{^/adm/wrapper/ext/}) { my $query = $r->args; if ($query) { @@ -450,6 +502,9 @@ sub handler { $env{'request.external.querystring'} = $preserved; } } + if ($env{'request.course.id'}) { + $checkabsolute = 1; + } } elsif ($env{'request.course.id'} && (($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) || ($requrl =~ m{^/public/$cdom/$cnum/syllabus$}))) { @@ -464,6 +519,20 @@ sub handler { } } } + 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 @@ -477,6 +546,9 @@ sub handler { $checkexempt = 1; } } + if ($env{'user.noloadbalance'} eq $r->dir_config('lonHostID')) { + $checkexempt = 1; + } unless ($checkexempt) { ($is_balancer,$otherserver) = &Apache::lonnet::check_loadbalancing($env{'user.name'}, @@ -488,6 +560,10 @@ sub handler { if ($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'} = $r->uri; + } } # ---------------------------------------------------------------- Check access @@ -495,6 +571,13 @@ sub handler { if ($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; @@ -522,6 +605,12 @@ sub handler { 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; @@ -660,7 +749,8 @@ sub handler { } # ------------------------------------ See if this is a viewable portfolio file if (&Apache::lonnet::is_portfolio_url($requrl)) { - my $access=&Apache::lonnet::allowed('bre',$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;