--- loncom/auth/lonacc.pm 2001/11/29 21:54:56 1.23 +++ loncom/auth/lonacc.pm 2005/11/29 21:12:03 1.70 @@ -1,7 +1,7 @@ # The LearningOnline Network # Cookie Based Access Handler # -# $Id: lonacc.pm,v 1.23 2001/11/29 21:54:56 www Exp $ +# $Id: lonacc.pm,v 1.70 2005/11/29 21:12:03 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,10 +25,7 @@ # # http://www.lon-capa.org/ # -# 5/21/99,5/22,5/29,5/31,6/15,16/11,22/11, -# 01/06,01/13,05/31,06/01,09/06,09/25,09/28,10/30,11/6, -# 12/25,12/26, -# 01/06/01,05/28,8/11,9/26,11/29 Gerd Kortemeyer +### package Apache::lonacc; @@ -36,6 +33,8 @@ use strict; use Apache::Constants qw(:common :http :methods); use Apache::File; use Apache::lonnet; +use Apache::loncommon(); +use Apache::lonlocal; use CGI::Cookie(); use Fcntl qw(:flock); @@ -45,124 +44,134 @@ sub handler { 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) { - my $handle=$lonid->value; + $handle=$lonid->value; $handle=~s/\W//g; - my $lonidsdir=$r->dir_config('lonIDsDir'); - if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) { + } + + if ($r->user + && (!$lonid || !-e "$lonidsdir/$handle.id" || $handle eq '') ) { + 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=/"); + } + } -# ------------------------------------------- Transfer profile into environment + if ($r->dir_config("lonBalancer") eq 'yes') { + $r->set_handlers('PerlResponseHandler'=> + [\&Apache::switchserver::handler]); + } - my @profile; - { - my $idf=Apache::File->new("$lonidsdir/$handle.id"); - flock($idf,LOCK_SH); - @profile=<$idf>; - $idf->close(); - } - my $envi; - for ($envi=0;$envi<=$#profile;$envi++) { - chomp($profile[$envi]); - my ($envname,$envvalue)=split(/=/,$profile[$envi]); - $ENV{$envname} = $envvalue; - } - $ENV{'user.environment'} = "$lonidsdir/$handle.id"; - if ($requrl=~/^\/res\//) { - $ENV{'request.state'} = "published"; - } else { - $ENV{'request.state'} = 'unknown'; - } - $ENV{'request.filename'} = $r->filename; + if ($handle ne '') { + if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) { -# -------------------------------------------------------- Load POST parameters +# ------------------------------------------------------ Initialize Environment + &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); - - my $buffer; +# --------------------------------------------------------- Initialize Language - $r->read($buffer,$r->header_in('Content-length')); + &Apache::lonlocal::get_language_handle($r); - unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) { - my @pairs=split(/&/,$buffer); - my $pair; - foreach $pair (@pairs) { - my ($name,$value) = split(/=/,$pair); - $value =~ tr/+/ /; - $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; - $name =~ tr/+/ /; - $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; - $ENV{"form.$name"}=$value; - } - } else { - my $contentsep=$1; - my @lines = split (/\n/,$buffer); - my $name=''; - my $value=''; - my $fname=''; - my $fmime=''; - my $i; - for ($i=0;$i<=$#lines;$i++) { - if ($lines[$i]=~/^$contentsep/) { - if ($name) { - chomp($value); - if ($fname) { - $ENV{"form.$name.filename"}=$fname; - $ENV{"form.$name.mimetype"}=$fmime; - } else { - $value=~s/\s+$//s; - } - $ENV{"form.$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[$i]."\n"; - } +# -------------------------------------------------------------- Resource State + + if ($requrl=~/^\/+(res|uploaded)\//) { + $env{'request.state'} = "published"; + } else { + $env{'request.state'} = 'unknown'; } - } - $r->method_number(M_GET); - $r->method('GET'); - $r->headers_in->unset('Content-length'); + $env{'request.filename'} = $r->filename; + $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl); +# -------------------------------------------------------- Load POST parameters + + &Apache::loncommon::get_posted_cgi($r); # ---------------------------------------------------------------- Check access - if ($requrl!~/^\/adm\//) { + 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"; + $env{'user.error.msg'}="$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"; + $env{'user.error.msg'}="$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 ($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; + } # ------------------------------------------------------------- This is allowed - if ($ENV{'request.course.id'}) { + if ($env{'request.course.id'}) { + &Apache::lonnet::countacc($requrl); $requrl=~/\.(\w+)$/; - if (&Apache::lonnet::fileembstyle($1) eq 'ssi') { + if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || + ($requrl=~/^\/adm\/.*\/(aboutme|navmaps|smppg|bulletinboard)(\?|$)/) || + ($requrl=~/^\/adm\/wrapper\//) || + ($requrl=~m|\.problem/smpedit$|) || + ($requrl=~/^\/public\/.*\/syllabus$/)) { # ------------------------------------- This is serious stuff, get symb and log - my $symb=&Apache::lonnet::symbread; - $ENV{'request.symb'}=$symb; + 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,$murl => [$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]); + } 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; + } + if ($symb) { + my ($map,$mid,$murl)= + &Apache::lonnet::decode_symb($symb); + &Apache::lonnet::symblist($map,$murl =>[$murl,$mid], + 'last_known' =>[$murl,$mid]); + } + } + $env{'request.symb'}=$symb; &Apache::lonnet::courseacclog($symb); } else { # ------------------------------------------------------- This is other content @@ -176,20 +185,100 @@ sub handler { } # -------------------------------------------- See if this is a public resource - if (&Apache::lonnet::metadata($requrl,'copyright') eq 'public') { + if ($requrl=~m|^/public/| + || (&Apache::lonnet::metadata($requrl,'copyright') eq 'public')) { &Apache::lonnet::logthis('Granting public access: '.$requrl); - $ENV{'user.name'}='public'; - $ENV{'user.domain'}='public'; - $ENV{'request.state'} = "published"; - $ENV{'request.publicaccess'} = 1; - $ENV{'request.filename'} = $r->filename; + 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; } -# ----------------------------------------------- Store where they wanted to go - - $ENV{'request.firsturl'}=$requrl; - return FORBIDDEN; + if ($requrl=~m|^/+adm/+help/+|) { + return OK; + } +# -------------------------------------------------------------- Not authorized + $requrl=~/\.(\w+)$/; +# if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || +# ($requrl=~/^\/adm\/(roles|logout|email|menu|remote)/) || +# ($requrl=~m|^/prtspool/|)) { +# -------------------------- Store where they wanted to go and get login screen + $env{'request.querystring'}=$r->args; + $env{'request.firsturl'}=$requrl; + return FORBIDDEN; +# } else { +# --------------------------------------------------------------------- Goodbye +# return HTTP_BAD_REQUEST; +# } } 1; __END__ + +=head1 NAME + +Apache::lonacc - Cookie Based Access Handler + +=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 + +=cut