--- loncom/auth/lonacc.pm 2005/02/21 18:22:04 1.60.2.1 +++ loncom/auth/lonacc.pm 2014/01/04 23:21:22 1.151 @@ -1,7 +1,7 @@ # The LearningOnline Network # Cookie Based Access Handler # -# $Id: lonacc.pm,v 1.60.2.1 2005/02/21 18:22:04 albertel Exp $ +# $Id: lonacc.pm,v 1.151 2014/01/04 23:21:22 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,18 +25,73 @@ # # 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 -# ### +=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; @@ -45,155 +100,627 @@ use Apache::File; use Apache::lonnet; use Apache::loncommon(); use Apache::lonlocal; -use CGI::Cookie(); +use Apache::restrictedaccess(); +use Apache::blockedaccess(); use Fcntl qw(:flock); +use LONCAPA qw(:DEFAULT :match); + +sub cleanup { + my ($r)=@_; + if (! $r->is_initial_req()) { return DECLINED; } + &Apache::lonnet::save_cache(); + &Apache::lontexconvert::jsMath_reset(); + return OK; +} + +sub goodbye { + my ($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 (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=''; + } + $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) = @_; + + my $lonidsdir=$r->dir_config('lonIDsDir'); + if (($r->user eq '') || ($username ne '') || + (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 $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{'token'}); + } + + 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 $form{'udom'}) && + ($sessiondata{'username'} eq $form{'uname'})) { + $hosthere = 1; + } + } + unless ($hosthere) { + ($is_balancer,$otherserver) = + &Apache::lonnet::check_loadbalancing($user,$domain); + } + + if ($is_balancer) { + # login but immediately go to switch server to find us a new + # machine + &Apache::lonauth::success($r,$user,$domain,$home,'noredirect'); + $env{'request.sso.login'} = 1; + if (defined($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; + 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 $item ('role','symb') { + if (exists($form{$item})) { + $info{$item} = $form{$item}; + } + } + unless ($info{'symb'}) { + unless ($r->uri eq '/adm/roles') { + $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'); + } + my $token = + &Apache::lonnet::tmpput(\%info, + $r->dir_config('lonHostID')); + $env{'form.token'} = $token; + $r->internal_redirect('/adm/migrateuser'); + $r->set_handlers('PerlHandler'=> undef); + } + return OK; + } elsif (defined($r->dir_config('lonSSOUserUnknownRedirect'))) { + &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); + 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)) { + $r->internal_redirect('/adm/createaccount'); + } 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($r->header_in('Cookie')); - if ($r->header_in('User-Agent')=~/NSDL\_Search\_Bot/) { - return OK; - } - 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())) { + $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 $suppext; + if ($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; + } } - $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/) { + $suppext = 1; + } + } + } + } + } # -------------------------------------------------------- Load POST parameters - &Apache::loncommon::get_posted_cgi($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) { + ($is_balancer,$otherserver) = + &Apache::lonnet::check_loadbalancing($env{'user.name'}, + $env{'user.domain'}); + } + if ($is_balancer) { + $r->set_handlers('PerlResponseHandler'=> + [\&Apache::switchserver::handler]); + if ($otherserver ne '') { + $env{'form.otherserver'} = $otherserver; + } + } + +# ---------------------------------------------------------------- Check access + my $now = time; + if ($requrl !~ m{^/(?:adm|public|prtspool)/} + || $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) { + 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 ($access eq 'A') { + &Apache::restrictedaccess::setup_handler($r); + return OK; + } + if ($access eq 'B') { + &Apache::blockedaccess::setup_handler($r); + return OK; } - 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"; + 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; + } + } + } 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 ($ENV{'request.course.id'}) { + if ($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\//) || - ($requrl=~m|\.problem/smpedit$|) || - ($requrl=~/^\/public\/.*\/syllabus$/)) { + $requrl=~/\.(\w+)$/; + 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'}) { - $symb=&Apache::lonnet::symbclean($ENV{'form.symb'}); - if ($requrl =~ m|^/adm/wrapper/|) { - my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); - &Apache::lonnet::symblist($map,$murl => $mid, - 'last_known' => $murl); - } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) || + 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,$1))) { - my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); - &Apache::lonnet::symblist($map,$murl => $mid, - 'last_known' => $murl); + &Apache::lonnet::symbverify($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; + $symb); + $env{'user.error.msg'}= + "$requrl:bre:1:1:Invalid Access"; + return HTTP_NOT_ACCEPTABLE; + } + } else { + if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) { + $requrl = $1; } - } 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; + 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,$mid]); + } } - my ($map,$mid,$murl)=split(/\_\_\_/,$symb); - &Apache::lonnet::symblist($map,$murl => $mid, - 'last_known' => $murl); - } - $ENV{'request.symb'}=$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::loncommon::get_posted_cgi($r); - $ENV{'user.name'}='public'; - $ENV{'user.domain'}='public'; - $ENV{'request.state'} = "published"; - $ENV{'request.publicaccess'} = 1; - $ENV{'request.filename'} = $r->filename; - my ($httpbrowser, $clientbrowser, $clientversion, - $clientmathml, $clientunicode, $clientos) = - &Apache::loncommon::decode_user_agent($r); - $ENV{'browser.type'}=$clientbrowser; - $ENV{'browser.version'}=$clientversion; - $ENV{'browser.mathml'}=$clientmathml; - $ENV{'browser.unicode'}=$clientunicode; - $ENV{'browser.os'}=$clientos; - - 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 $access=&Apache::lonnet::allowed('bre',$requrl); + 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; + $env{'request.querystring'}=$r->args; + $env{'request.firsturl'}=$requrl; return FORBIDDEN; # } else { # --------------------------------------------------------------------- Goodbye @@ -204,64 +731,9 @@ 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 +