--- loncom/auth/lonacc.pm 2005/07/07 05:53:35 1.67
+++ loncom/auth/lonacc.pm 2009/07/23 17:40:29 1.126
@@ -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 1.126 2009/07/23 17:40:29 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -27,6 +27,73 @@
#
###
+=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
+
+=over
+
+=cut
+
+
package Apache::lonacc;
use strict;
@@ -35,150 +102,458 @@ 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;
+
+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 (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');
+ $r->headers_in->unset('Content-length');
+}
+
+=pod
+
+=item upload_size_allowed()
+
+ Perform size checks for file uploads to essayresponse items in course context.
+
+ Add form.HWFILESIZE.$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 $r->user
+ will be set and valid now need to find the loncapa user info and possibly
+ balance them
+ returns OK if it was a SSO and user was handled
+ undef if not SSO or no means to hanle the user
+
+=cut
+
+sub sso_login {
+ my ($r,$handle) = @_;
+
+ my $lonidsdir=$r->dir_config('lonIDsDir');
+ if (!($r->user
+ && (!defined($env{'user.name'}) && !defined($env{'user.domain'}))
+ && ($handle eq ''))) {
+ # 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) {
+ foreach my $pair (split(/&/,$query)) {
+ my ($name, $value) = split(/=/,$pair);
+ $name = &unescape($name);
+ if (($name eq 'role') || ($name eq 'symb')) {
+ $value =~ tr/+/ /;
+ $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+ $form{$name} = $value;
+ }
+ }
+ }
+
+ my $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 $user ");
+ if ($r->dir_config("lonBalancer") eq 'yes') {
+ # login but immeaditly go to switch server to find us a new
+ # machine
+ &Apache::lonauth::success($r,$user,$domain,$home,'noredirect','',\%form);
+ $env{'request.sso.login'} = 1;
+ if (defined($r->dir_config("lonSSOReloginServer"))) {
+ $env{'request.sso.reloginserver'} =
+ $r->dir_config('lonSSOReloginServer');
+ }
+ $r->internal_redirect('/adm/switchserver');
+ $r->set_handlers('PerlHandler'=> undef);
+ } else {
+ # need to login them in, so generate the need data that
+ # migrate expects to do login
+ my %info=('ip' => $r->connection->remote_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};
+ }
+ }
+ 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'));
- 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") && ($handle ne '')) {
+ if (&Apache::lonnet::is_domainimage($requrl)) {
+ return OK;
+ }
-# ------------------------------------------------------ Initialize Environment
+ if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) {
+ return OK;
+ }
+
+ my $handle = &Apache::lonnet::check_for_valid_session($r);
+
+ my $result = &sso_login($r,$handle);
+ if (defined($result)) {
+ return $result;
+ }
- &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
+
+ if ($r->dir_config("lonBalancer") eq 'yes') {
+ $r->set_handlers('PerlResponseHandler'=>
+ [\&Apache::switchserver::handler]);
+ }
+
+ if ($handle eq '') {
+ $r->log_reason("Cookie $handle 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';
- }
- $env{'request.filename'} = $r->filename;
- $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl);
+ 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);
# -------------------------------------------------------- Load POST parameters
- &Apache::loncommon::get_posted_cgi($r);
+ &Apache::lonacc::get_posted_cgi($r);
# ---------------------------------------------------------------- Check access
-
- 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|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";
- 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;
+ }
+ }
+ 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/(roles|logout|randomlabel\.png)}) {
- $env{'request.querystring'}=$r->args;
- $env{'request.firsturl'}=$requrl;
- return FORBIDDEN;
+ }
+ 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/(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|navmaps|smppg|bulletinboard)(\?|$ )/x) ||
+ ($requrl=~/^\/adm\/wrapper\//) ||
+ ($requrl=~m|^/adm/coursedocs/showdoc/|) ||
+ ($requrl=~m|\.problem/smpedit$|) ||
+ ($requrl=~/^\/public\/.*\/syllabus$/)) {
# ------------------------------------- This is serious stuff, get symb and log
- my $query=$r->args;
- my $symb;
- if ($query) {
+ my $symb;
+ if ($query) {
&Apache::loncommon::get_unprocessed_cgi($query,['symb']);
- }
- if ($env{'form.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,$mid],
+ if ($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,$requrl)) ||
+ } elsif ((&Apache::lonnet::symbverify($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,$mid]);
+ my ($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);
+ $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;
+ $env{'user.error.msg'}=
+ "$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,$mid]);
+ 'last_known' =>[$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);
+ }
+ my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};;
+ my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};;
+ if ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/docs/.+\.html?$}) {
+ 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';
+ }
+ }
+ }
}
- }
- return OK;
- } else {
- $r->log_reason("Cookie $handle not valid", $r->filename)
- };
+ }
+ return OK;
}
-
# -------------------------------------------- See if this is a public resource
- if ($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 $access=&Apache::lonnet::allowed('bre',$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') ||
@@ -197,64 +572,9 @@ 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
+
500 Internal Server Error
Internal Server Error
The server encountered an internal error or
misconfiguration and was unable to complete
your request.
Please contact the server administrator at
root@localhost to inform them of the time this error occurred,
and the actions you performed just before this error.
More information about this error may be available
in the server error log.