version 1.118, 2008/11/16 02:46:19
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version 1.149, 2013/12/13 02:10:27
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# |
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### |
### |
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=head1 NAME |
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Apache::lonacc - Cookie Based Access Handler |
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=head1 SYNOPSIS |
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Invoked (for various locations) by /etc/httpd/conf/srm.conf: |
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PerlAccessHandler Apache::lonacc |
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=head1 INTRODUCTION |
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This module enables cookie based authentication and is used |
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to control access for many different LON-CAPA URIs. |
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Whenever the client sends the cookie back to the server, |
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this cookie is handled by either lonacc.pm or loncacc.pm |
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(see srm.conf for what is invoked when). If |
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the cookie is missing or invalid, the user is re-challenged |
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for login information. |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 HANDLER SUBROUTINE |
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This routine is called by Apache and mod_perl. |
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=over 4 |
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=item * |
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transfer profile into environment |
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=item * |
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load POST parameters |
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=item * |
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check access |
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=item * |
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if allowed, get symb, log, generate course statistics if applicable |
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=item * |
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otherwise return error |
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=item * |
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see if public resource |
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=item * |
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store attempted access |
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=back |
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=head1 NOTABLE SUBROUTINES |
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=cut |
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package Apache::lonacc; |
package Apache::lonacc; |
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use strict; |
use strict; |
Line 36 use Apache::lonnet;
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Line 101 use Apache::lonnet;
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use Apache::loncommon(); |
use Apache::loncommon(); |
use Apache::lonlocal; |
use Apache::lonlocal; |
use Apache::restrictedaccess(); |
use Apache::restrictedaccess(); |
use Apache::blockedaccess(); |
use Apache::blockedaccess(); |
use Fcntl qw(:flock); |
use Fcntl qw(:flock); |
use LONCAPA; |
use LONCAPA qw(:DEFAULT :match); |
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sub cleanup { |
sub cleanup { |
my ($r)=@_; |
my ($r)=@_; |
Line 89 sub get_posted_cgi {
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Line 154 sub get_posted_cgi {
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for ($i=0;$i<=$#lines;$i++) { |
for ($i=0;$i<=$#lines;$i++) { |
if ($lines[$i]=~/^--\Q$contentsep\E/) { |
if ($lines[$i]=~/^--\Q$contentsep\E/) { |
if ($name) { |
if ($name) { |
chomp($value); |
chomp($value); |
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if (($r->uri eq '/adm/portfolio') && |
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($name eq 'uploaddoc')) { |
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if (length($value) == 1) { |
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$value=~s/[\r\n]$//; |
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} |
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} |
if (ref($fields) eq 'ARRAY') { |
if (ref($fields) eq 'ARRAY') { |
next if (!grep(/^\Q$name\E$/,@{$fields})); |
next if (!grep(/^\Q$name\E$/,@{$fields})); |
} |
} |
Line 155 sub get_posted_cgi {
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Line 226 sub get_posted_cgi {
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$r->headers_in->unset('Content-length'); |
$r->headers_in->unset('Content-length'); |
} |
} |
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# |
=pod |
# Perform size checks for file uploads to essayresponse items in course context. |
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# |
=over |
# Add form.HWFILESIZE.$part_$id to %env with file size (MB) |
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# If file exceeds maximum allowed size, add form.HWFILETOOBIG.$part_$id to %env. |
=item upload_size_allowed() |
# |
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Perform size checks for file uploads to essayresponse items in course context. |
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Add form.HWFILESIZE.$part_$id to %env with file size (MB) |
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If file exceeds maximum allowed size, add form.HWFILETOOBIG.$part_$id to %env. |
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=cut |
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sub upload_size_allowed { |
sub upload_size_allowed { |
my ($name,$size,$fname) = @_; |
my ($name,$size,$fname) = @_; |
if ($name =~ /^HWFILE(\w+)$/) { |
if ($name =~ /^HWFILE(\w+)$/) { |
my $ident = $1; |
my $ident = $1; |
my $item = 'HWFILESIZE'.$ident; |
my $item = 'HWFILESIZE'.$ident; |
&Apache::loncommon::add_to_env("form.$item",$size); |
my $savesize = sprintf("%.6f",$size); |
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&Apache::loncommon::add_to_env("form.$item",$savesize); |
my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize"); |
my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize"); |
if (!$maxsize) { |
if (!$maxsize) { |
$maxsize = 100.0; |
$maxsize = 10.0; # FIXME This should become a domain configuration. |
} |
} |
if ($size > $maxsize) { |
if ($size > $maxsize) { |
my $warn = 'HWFILETOOBIG'.$ident; |
my $warn = 'HWFILETOOBIG'.$ident; |
Line 181 sub upload_size_allowed {
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Line 259 sub upload_size_allowed {
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return 'ok'; |
return 'ok'; |
} |
} |
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# handle the case of the single sign on user, at this point $r->user |
=pod |
# will be set and valid now need to find the loncapa user info and possibly |
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# balance them |
=item sso_login() |
# returns OK if it was a SSO and user was handled |
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# undef if not SSO or no means to hanle the user |
handle the case of the single sign on user, at this point $r->user |
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will be set and valid now need to find the loncapa user info, and possibly |
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balance them. If $r->user() is set this means either it was either set by |
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SSO or by checkauthen.pm if a valid cookie was found. The latter case can |
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be identified by the third arg ($usename). |
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returns OK if it was SSO and user was handled. |
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returns undef if not SSO or no means to handle the user. |
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=cut |
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sub sso_login { |
sub sso_login { |
my ($r,$handle) = @_; |
my ($r,$handle,$username) = @_; |
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my $lonidsdir=$r->dir_config('lonIDsDir'); |
my $lonidsdir=$r->dir_config('lonIDsDir'); |
if (!($r->user |
if (($r->user eq '') || ($username ne '') || |
&& (!defined($env{'user.name'}) && !defined($env{'user.domain'})) |
(defined($env{'user.name'}) && (defined($env{'user.domain'})) |
&& ($handle eq ''))) { |
&& ($handle ne ''))) { |
# not an SSO case or already logged in |
# not an SSO case or already logged in |
return undef; |
return undef; |
} |
} |
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my ($user) = ($r->user =~ m/([a-zA-Z0-9_\-@.]*)/); |
my ($user) = ($r->user =~ m/([a-zA-Z0-9_\-@.]*)/); |
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my $domain = $r->dir_config('lonDefDomain'); |
my $query = $r->args; |
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my %form; |
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if ($query) { |
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my @items = ('role','symb','iptoken'); |
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&Apache::loncommon::get_unprocessed_cgi($query,\@items); |
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foreach my $item (@items) { |
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if (defined($env{'form.'.$item})) { |
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$form{$item} = $env{'form.'.$item}; |
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} |
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} |
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} |
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my %sessiondata; |
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if ($form{'iptoken'}) { |
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%sessiondata = &Apache::lonnet::tmpget($form{'iptoken'}); |
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my $delete = &Apache::lonnet::tmpdel($form{'token'}); |
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} |
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my $domain = $r->dir_config('lonSSOUserDomain'); |
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if ($domain eq '') { |
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$domain = $r->dir_config('lonDefDomain'); |
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} |
my $home=&Apache::lonnet::homeserver($user,$domain); |
my $home=&Apache::lonnet::homeserver($user,$domain); |
if ($home !~ /(con_lost|no_host|no_such_host)/) { |
if ($home !~ /(con_lost|no_host|no_such_host)/) { |
&Apache::lonnet::logthis(" SSO authorized user $user "); |
&Apache::lonnet::logthis(" SSO authorized user $user "); |
if ($r->dir_config("lonBalancer") eq 'yes') { |
my ($is_balancer,$otherserver,$hosthere); |
# login but immeaditly go to switch server to find us a new |
if ($form{'iptoken'}) { |
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if (($sessiondata{'domain'} eq $form{'udom'}) && |
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($sessiondata{'username'} eq $form{'uname'})) { |
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$hosthere = 1; |
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} |
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} |
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unless ($hosthere) { |
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($is_balancer,$otherserver) = |
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&Apache::lonnet::check_loadbalancing($user,$domain); |
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} |
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if ($is_balancer) { |
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# login but immediately go to switch server to find us a new |
# machine |
# machine |
&Apache::lonauth::success($r,$user,$domain,$home,'noredirect'); |
&Apache::lonauth::success($r,$user,$domain,$home,'noredirect'); |
$env{'request.sso.login'} = 1; |
$env{'request.sso.login'} = 1; |
Line 213 sub sso_login {
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Line 333 sub sso_login {
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$env{'request.sso.reloginserver'} = |
$env{'request.sso.reloginserver'} = |
$r->dir_config('lonSSOReloginServer'); |
$r->dir_config('lonSSOReloginServer'); |
} |
} |
$r->internal_redirect('/adm/switchserver'); |
my $redirecturl = '/adm/switchserver'; |
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if ($otherserver ne '') { |
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$redirecturl .= '?otherserver='.$otherserver; |
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} |
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$r->internal_redirect($redirecturl); |
$r->set_handlers('PerlHandler'=> undef); |
$r->set_handlers('PerlHandler'=> undef); |
} else { |
} else { |
# need to login them in, so generate the need data that |
# need to login them in, so generate the need data that |
# migrate expects to do login |
# migrate expects to do login |
my %info=('ip' => $r->connection->remote_ip(), |
my $ip; |
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my $c = $r->connection; |
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eval { |
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$ip = $c->remote_ip(); |
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}; |
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if ($@) { |
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$ip = $c->client_ip(); |
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} |
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my %info=('ip' => $ip, |
'domain' => $domain, |
'domain' => $domain, |
'username' => $user, |
'username' => $user, |
'server' => $r->dir_config('lonHostID'), |
'server' => $r->dir_config('lonHostID'), |
'sso.login' => 1 |
'sso.login' => 1 |
); |
); |
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foreach my $item ('role','symb') { |
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if (exists($form{$item})) { |
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$info{$item} = $form{$item}; |
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} |
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} |
if ($r->dir_config("ssodirecturl") == 1) { |
if ($r->dir_config("ssodirecturl") == 1) { |
$info{'origurl'} = $r->uri; |
$info{'origurl'} = $r->uri; |
} |
} |
Line 270 sub sso_login {
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Line 407 sub sso_login {
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sub handler { |
sub handler { |
my $r = shift; |
my $r = shift; |
my $requrl=$r->uri; |
my $requrl=$r->uri; |
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if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) { |
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return OK; |
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} |
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if (&Apache::lonnet::is_domainimage($requrl)) { |
if (&Apache::lonnet::is_domainimage($requrl)) { |
return OK; |
return OK; |
} |
} |
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my %user; |
my $handle = &Apache::lonnet::check_for_valid_session($r); |
my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user); |
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my $result = &sso_login($r,$handle); |
my $result = &sso_login($r,$handle,$user{'name'}); |
if (defined($result)) { |
if (defined($result)) { |
return $result; |
return $result; |
} |
} |
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my ($is_balancer,$otherserver); |
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if ($r->dir_config("lonBalancer") eq 'yes') { |
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$r->set_handlers('PerlResponseHandler'=> |
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[\&Apache::switchserver::handler]); |
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} |
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if ($handle eq '') { |
if ($handle eq '') { |
$r->log_reason("Cookie $handle not valid", $r->filename); |
unless (($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) { |
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$r->log_reason("Cookie not valid", $r->filename); |
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} |
} elsif ($handle ne '') { |
} elsif ($handle ne '') { |
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# ------------------------------------------------------ Initialize Environment |
# ------------------------------------------------------ Initialize Environment |
Line 306 sub handler {
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Line 446 sub handler {
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if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') { |
if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') { |
# -------------------------------------------------------------- Resource State |
# -------------------------------------------------------------- Resource State |
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my ($cdom,$cnum); |
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if ($env{'request.course.id'}) { |
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$cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; |
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$cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; |
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} |
if ($requrl=~/^\/+(res|uploaded)\//) { |
if ($requrl=~/^\/+(res|uploaded)\//) { |
$env{'request.state'} = "published"; |
$env{'request.state'} = "published"; |
} else { |
} else { |
Line 313 sub handler {
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Line 458 sub handler {
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} |
} |
$env{'request.filename'} = $r->filename; |
$env{'request.filename'} = $r->filename; |
$env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl); |
$env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl); |
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my $suppext; |
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if ($requrl =~ m{^/adm/wrapper/ext/}) { |
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my $query = $r->args; |
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if ($query) { |
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my $preserved; |
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foreach my $pair (split(/&/,$query)) { |
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my ($name, $value) = split(/=/,$pair); |
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unless ($name eq 'symb') { |
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$preserved .= $pair.'&'; |
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} |
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if (($env{'request.course.id'}) && ($name eq 'folderpath')) { |
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if ($value =~ /^supplemental/) { |
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$suppext = 1; |
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} |
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} |
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} |
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$preserved =~ s/\&$//; |
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if ($preserved) { |
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$env{'request.external.querystring'} = $preserved; |
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} |
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} |
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} elsif ($env{'request.course.id'} && |
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(($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) || |
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($requrl =~ m{^/public/$cdom/$cnum/syllabus$}))) { |
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my $query = $r->args; |
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if ($query) { |
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foreach my $pair (split(/&/,$query)) { |
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my ($name, $value) = split(/=/,$pair); |
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if ($name eq 'folderpath') { |
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if ($value =~ /^supplemental/) { |
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$suppext = 1; |
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} |
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} |
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} |
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} |
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} |
# -------------------------------------------------------- Load POST parameters |
# -------------------------------------------------------- Load POST parameters |
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&Apache::lonacc::get_posted_cgi($r); |
&Apache::lonacc::get_posted_cgi($r); |
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# ------------------------------------------------------ Check if load balancer |
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my $checkexempt; |
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if ($env{'user.loadbalexempt'} eq $r->dir_config('lonHostID')) { |
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if ($env{'user.loadbalcheck.time'} + 600 > time) { |
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$checkexempt = 1; |
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} |
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} |
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if ($env{'user.noloadbalance'} eq $r->dir_config('lonHostID')) { |
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$checkexempt = 1; |
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} |
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unless ($checkexempt) { |
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($is_balancer,$otherserver) = |
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&Apache::lonnet::check_loadbalancing($env{'user.name'}, |
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$env{'user.domain'}); |
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} |
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if ($is_balancer) { |
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$r->set_handlers('PerlResponseHandler'=> |
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[\&Apache::switchserver::handler]); |
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if ($otherserver ne '') { |
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$env{'form.otherserver'} = $otherserver; |
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} |
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} |
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# ---------------------------------------------------------------- Check access |
# ---------------------------------------------------------------- Check access |
my $now = time; |
my $now = time; |
if ($requrl !~ m{^/(?:adm|public|prtspool)/} |
if ($requrl !~ m{^/(?:adm|public|prtspool)/} |
Line 335 sub handler {
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Line 540 sub handler {
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return OK; |
return OK; |
} |
} |
if (($access ne '2') && ($access ne 'F')) { |
if (($access ne '2') && ($access ne 'F')) { |
$env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; |
if ($requrl =~ m{^/res/}) { |
return HTTP_NOT_ACCEPTABLE; |
$access = &Apache::lonnet::allowed('bro',$requrl); |
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if ($access ne 'F') { |
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if ($requrl eq '/res/lib/templates/simpleproblem.problem/smpedit') { |
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$access = &Apache::lonnet::allowed('bre','/res/lib/templates/simpleproblem.problem'); |
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if ($access ne 'F') { |
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$env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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} else { |
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$env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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} |
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} else { |
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$env{'user.error.msg'}="$requrl:bre:1:1:Access Denied"; |
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return HTTP_NOT_ACCEPTABLE; |
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} |
} |
} |
} |
} |
if ($requrl =~ m|^/prtspool/|) { |
if ($requrl =~ m|^/prtspool/|) { |
Line 359 sub handler {
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Line 580 sub handler {
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$env{'user.domain'} eq 'public' && |
$env{'user.domain'} eq 'public' && |
$requrl !~ m{^/+(res|public|uploaded)/} && |
$requrl !~ m{^/+(res|public|uploaded)/} && |
$requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x && |
$requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x && |
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$requrl !~ m{^/adm/blockingstatus/.*$} && |
$requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) { |
$requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) { |
$env{'request.querystring'}=$r->args; |
$env{'request.querystring'}=$r->args; |
$env{'request.firsturl'}=$requrl; |
$env{'request.firsturl'}=$requrl; |
Line 368 sub handler {
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Line 590 sub handler {
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if ($env{'request.course.id'}) { |
if ($env{'request.course.id'}) { |
&Apache::lonnet::countacc($requrl); |
&Apache::lonnet::countacc($requrl); |
$requrl=~/\.(\w+)$/; |
$requrl=~/\.(\w+)$/; |
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my $query=$r->args; |
if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || |
if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') || |
($requrl=~/^\/adm\/.*\/(aboutme|navmaps|smppg|bulletinboard)(\?|$ )/x) || |
($requrl=~/^\/adm\/.*\/(aboutme|smppg|bulletinboard)(\?|$ )/x) || |
($requrl=~/^\/adm\/wrapper\//) || |
($requrl=~/^\/adm\/wrapper\//) || |
($requrl=~m|^/adm/coursedocs/showdoc/|) || |
($requrl=~m|^/adm/coursedocs/showdoc/|) || |
($requrl=~m|\.problem/smpedit$|) || |
($requrl=~m|\.problem/smpedit$|) || |
($requrl=~/^\/public\/.*\/syllabus$/)) { |
($requrl=~/^\/public\/.*\/syllabus$/) || |
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($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) || |
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($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/)) { |
# ------------------------------------- This is serious stuff, get symb and log |
# ------------------------------------- This is serious stuff, get symb and log |
my $query=$r->args; |
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my $symb; |
my $symb; |
if ($query) { |
if ($query) { |
&Apache::loncommon::get_unprocessed_cgi($query,['symb']); |
&Apache::loncommon::get_unprocessed_cgi($query,['symb','folderpath']); |
} |
} |
if ($env{'form.symb'}) { |
if ($env{'form.symb'}) { |
$symb=&Apache::lonnet::symbclean($env{'form.symb'}); |
$symb=&Apache::lonnet::symbclean($env{'form.symb'}); |
Line 389 sub handler {
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Line 613 sub handler {
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'last_known' =>[$murl,$mid]); |
'last_known' =>[$murl,$mid]); |
} elsif ((&Apache::lonnet::symbverify($symb,$requrl)) || |
} elsif ((&Apache::lonnet::symbverify($symb,$requrl)) || |
(($requrl=~m|(.*)/smpedit$|) && |
(($requrl=~m|(.*)/smpedit$|) && |
&Apache::lonnet::symbverify($symb,$1))) { |
&Apache::lonnet::symbverify($symb,$1)) || |
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(($requrl=~m|(.*/aboutme)/portfolio$|) && |
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&Apache::lonnet::symbverify($symb,$1))) { |
my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); |
my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb); |
&Apache::lonnet::symblist($map,$murl => [$murl,$mid], |
&Apache::lonnet::symblist($map,$murl => [$murl,$mid], |
'last_known' =>[$murl,$mid]); |
'last_known' =>[$murl,$mid]); |
Line 401 sub handler {
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Line 627 sub handler {
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return HTTP_NOT_ACCEPTABLE; |
return HTTP_NOT_ACCEPTABLE; |
} |
} |
} else { |
} else { |
$symb=&Apache::lonnet::symbread($requrl); |
if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) { |
if (&Apache::lonnet::is_on_map($requrl) && $symb && |
$requrl = $1; |
!&Apache::lonnet::symbverify($symb,$requrl)) { |
} |
$r->log_reason('Invalid symb for '.$requrl.': '.$symb); |
unless ($suppext) { |
$env{'user.error.msg'}= |
$symb=&Apache::lonnet::symbread($requrl); |
"$requrl:bre:1:1:Invalid Access"; |
if (&Apache::lonnet::is_on_map($requrl) && $symb && |
return HTTP_NOT_ACCEPTABLE; |
!&Apache::lonnet::symbverify($symb,$requrl)) { |
} |
$r->log_reason('Invalid symb for '.$requrl.': '.$symb); |
if ($symb) { |
$env{'user.error.msg'}= |
my ($map,$mid,$murl)= |
"$requrl:bre:1:1:Invalid Access"; |
&Apache::lonnet::decode_symb($symb); |
return HTTP_NOT_ACCEPTABLE; |
&Apache::lonnet::symblist($map,$murl =>[$murl,$mid], |
} |
'last_known' =>[$murl,$mid]); |
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; |
$env{'request.symb'}=$symb; |
Line 422 sub handler {
|
Line 653 sub handler {
|
# ------------------------------------------------------- This is other content |
# ------------------------------------------------------- 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; |
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'} = $otherserver; |
|
} |
|
} |
} |
} |
# -------------------------------------------- See if this is a public resource |
# -------------------------------------------- See if this is a public resource |
if ($requrl=~m|^/+adm/+help/+|) { |
if ($requrl=~m|^/+adm/+help/+|) { |
Line 460 sub handler {
|
Line 721 sub handler {
|
1; |
1; |
__END__ |
__END__ |
|
|
=head1 NAME |
=pod |
|
|
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 |
=back |
|
|
=cut |
=cut |
|
|