--- loncom/auth/lonacc.pm 2006/09/19 20:36:27 1.101
+++ loncom/auth/lonacc.pm 2021/10/26 15:52:54 1.199
@@ -1,7 +1,7 @@
# The LearningOnline Network
# Cookie Based Access Handler
#
-# $Id: lonacc.pm,v 1.101 2006/09/19 20:36:27 albertel Exp $
+# $Id: lonacc.pm,v 1.199 2021/10/26 15:52:54 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -27,6 +27,71 @@
#
###
+=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;
@@ -36,15 +101,15 @@ use Apache::lonnet;
use Apache::loncommon();
use Apache::lonlocal;
use Apache::restrictedaccess();
-use CGI::Cookie();
+use Apache::blockedaccess();
+use Apache::lonprotected();
use Fcntl qw(:flock);
-use LONCAPA;
+use LONCAPA qw(:DEFAULT :match);
sub cleanup {
my ($r)=@_;
if (! $r->is_initial_req()) { return DECLINED; }
&Apache::lonnet::save_cache();
- &Apache::lontexconvert::jsMath_reset();
return OK;
}
@@ -57,13 +122,14 @@ sub goodbye {
###############################################
sub get_posted_cgi {
- my ($r) = @_;
+ my ($r,$fields) = @_;
my $buffer;
if ($r->header_in('Content-length')) {
$r->read($buffer,$r->header_in('Content-length'),0);
}
- unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
+ my $content_type = $r->header_in('Content-type');
+ if ($content_type !~ m{^multipart/form-data}) {
my @pairs=split(/&/,$buffer);
my $pair;
foreach $pair (@pairs) {
@@ -72,10 +138,13 @@ sub get_posted_cgi {
$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=$1;
+ my ($contentsep) = ($content_type =~ /boundary=\"?([^\";,]+)\"?/);
my @lines = split (/\n/,$buffer);
my $name='';
my $value='';
@@ -83,16 +152,37 @@ sub get_posted_cgi {
my $fmime='';
my $i;
for ($i=0;$i<=$#lines;$i++) {
- if ($lines[$i]=~/^$contentsep/) {
+ if ($lines[$i]=~/^--\Q$contentsep\E/) {
if ($name) {
- chomp($value);
- if ($fname) {
- $env{"form.$name.filename"}=$fname;
- $env{"form.$name.mimetype"}=$fmime;
- } else {
- $value=~s/\s+$//s;
- }
- &Apache::loncommon::add_to_env("form.$name",$value);
+ chomp($value);
+ if (($r->uri eq '/adm/portfolio') &&
+ ($name eq 'uploaddoc')) {
+ if (length($value) == 1) {
+ $value=~s/[\r\n]$//;
+ }
+ } elsif ($fname =~ /\.(xls|doc|ppt)(x|m)$/i) {
+ $value=~s/[\r\n]$//;
+ }
+ 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++;
@@ -113,6 +203,14 @@ sub get_posted_cgi {
$fname='';
$fmime='';
}
+ if ($i<$#lines && $lines[$i+1]=~/^Content\-Type\:\s*([\w\-\/]+)/i) {
+ # TODO: something with $1 !
+ $i++;
+ }
+ if ($i<$#lines && $lines[$i+1]=~/^Content\-transfer\-encoding\:\s*([\w\-\/]+)/i) {
+ # TODO: something with $1 !
+ $i++;
+ }
$i++;
}
} else {
@@ -138,42 +236,231 @@ sub get_posted_cgi {
$r->headers_in->unset('Content-length');
}
-# handle the case of the single sign on user, at this point $r->user
-# will be set and valid now need to find the loncapa user info and possibly
-# balance them
-# returns OK if it was a SSO and user was handled
-# undef if not SSO or no means to hanle the user
+=pod
+
+=over
+
+=item upload_size_allowed()
+
+ Perform size checks for file uploads to essayresponse items in course context.
+
+ Add form.HWFILESIZE.$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 ($r,$lonid,$handle) = @_;
+ my ($r,$handle,$username) = @_;
- my $lonidsdir=$r->dir_config('lonIDsDir');
- if (!($r->user
- && (!defined($env{'user.name'}) && !defined($env{'user.domain'}))
- && (!$lonid || !-e "$lonidsdir/$handle.id" || $handle eq ''))) {
+ if (($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','iptoken','origurl','ltoken','linkkey','logtoken');
+ &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{'iptoken'});
+ unless ($sessiondata{'sessionserver'}) {
+ delete($form{'iptoken'});
+ }
+ }
+
+ my ($linkprot,$linkkey);
+ if ($form{'logtoken'}) {
+ my ($firsturl,@rest);
+ my $lonhost = $r->dir_config('lonHostID');
+ my $tmpinfo = &Apache::lonnet::reply('tmpget:'.$form{'logtoken'},$lonhost);
+ my $delete = &Apache::lonnet::tmpdel($form{'logtoken'});
+ (undef,$firsturl,@rest) = split(/&/,$tmpinfo);
+ foreach my $item (@rest) {
+ my ($key,$value) = split(/=/,$item);
+ $form{$key} = &unescape($value);
+ }
+ if ($firsturl =~ m{^/tiny/$match_domain/\w+$}) {
+ $form{'origurl'} = $firsturl;
+ }
+ }
+ if ($form{'ltoken'}) {
+ my %link_info = &Apache::lonnet::tmpget($form{'ltoken'});
+ $linkprot = $link_info{'linkprot'};
+ my $delete = &Apache::lonnet::tmpdel($form{'ltoken'});
+ }
+ if ($form{'linkkey'} ne '') {
+ $linkkey = $form{'linkkey'};
+ }
- my $domain = $r->dir_config('lonDefDomain');
+ 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)/) {
- if ($r->dir_config("lonBalancer") eq 'yes') {
- # login but immeaditly go to switch server to find us a new
+ &Apache::lonnet::logthis(" SSO authorized user $user ");
+ my ($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,'login');
+ if ($is_balancer) {
+ # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
+ my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
+ if (($found_server) && ($balancer_cookie =~ /^\Q$domain\E_\Q$user\E_/)) {
+ $otherserver = $found_server;
+ } elsif ($otherserver eq '') {
+ my $lowest_load;
+ ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($domain);
+ if ($lowest_load > 100) {
+ $otherserver = &Apache::lonnet::spareserver($r,$lowest_load,$lowest_load,1,$domain);
+ }
+ if ($otherserver ne '') {
+ my @hosts = &Apache::lonnet::current_machine_ids();
+ if (grep(/^\Q$otherserver\E$/,@hosts)) {
+ $hosthere = $otherserver;
+ }
+ }
+ }
+ }
+ }
+ if (($is_balancer) && (!$hosthere)) {
+ # login but immediately go to switch server to find us a new
# machine
&Apache::lonauth::success($r,$user,$domain,$home,'noredirect');
- $r->internal_redirect('/adm/switchserver');
+ foreach my $item (keys(%form)) {
+ $env{'form.'.$item} = $form{$item};
+ }
+ unless (($form{'symb'}) || ($form{'origurl'})) {
+ unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
+ $env{'form.origurl'} = $r->uri;
+ }
+ }
+ if (($r->uri eq '/adm/sso') && ($form{'origurl'} =~ m{^/+tiny/+$match_domain/+\w+$})) {
+ $env{'request.deeplink.login'} = $form{'origurl'};
+ } elsif ($r->uri =~ m{^/+tiny/+$match_domain/+\w+$}) {
+ $env{'request.deeplink.login'} = $r->uri;
+ }
+ if ($env{'request.deeplink.login'}) {
+ if ($linkprot) {
+ $env{'request.linkprot'} = $linkprot;
+ } elsif ($linkkey ne '') {
+ $env{'request.linkkey'} = $linkkey;
+ }
+ }
+ $env{'request.sso.login'} = 1;
+ if (defined($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 %info=('ip' => $r->connection->remote_ip(),
+ my $ip = &Apache::lonnet::get_requestor_ip($r);
+ my %info=('ip' => $ip,
'domain' => $domain,
'username' => $user,
'server' => $r->dir_config('lonHostID'),
'sso.login' => 1
);
+ foreach my $item ('role','symb','iptoken','origurl') {
+ if (exists($form{$item})) {
+ $info{$item} = $form{$item};
+ }
+ }
+ unless (($info{'symb'}) || ($info{'origurl'})) {
+ unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/sso')) {
+ $info{'origurl'} = $r->uri;
+ }
+ }
+ if (($r->uri eq '/adm/sso') && ($form{'origurl'} =~ m{^/+tiny/+$match_domain/+\w+$})) {
+ $info{'deeplink.login'} = $form{'origurl'};
+ } elsif ($r->uri =~ m{^/+tiny/+$match_domain/+\w+$}) {
+ $info{'deeplink.login'} = $r->uri;
+ }
+ if ($info{'deeplink.login'}) {
+ if ($linkprot) {
+ $info{'linkprot'} = $linkprot;
+ } elsif ($linkkey ne '') {
+ $info{'linkkey'} = $linkkey;
+ }
+ }
+ if ($r->dir_config("ssodirecturl") == 1) {
+ $info{'origurl'} = $r->uri;
+ }
+ if (defined($r->dir_config("lonSSOReloginServer"))) {
+ $info{'sso.reloginserver'} =
+ $r->dir_config('lonSSOReloginServer');
+ }
+ if (($is_balancer) && ($hosthere)) {
+ $info{'noloadbalance'} = $hosthere;
+ }
my $token =
&Apache::lonnet::tmpput(\%info,
$r->dir_config('lonHostID'));
@@ -182,10 +469,33 @@ sub sso_login {
$r->set_handlers('PerlHandler'=> undef);
}
return OK;
- } elsif (defined($r->dir_config('lonSSOUserUnknownRedirect'))) {
- $r->internal_redirect($r->dir_config('lonSSOUserUnknownRedirect'));
- $r->set_handlers('PerlHandler'=> undef);
- return OK;
+ } else {
+ &Apache::lonnet::logthis(" SSO authorized unknown user $user ");
+ my @cancreate;
+ my %domconfig =
+ &Apache::lonnet::get_dom('configuration',['usercreation'],$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)) || (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;
+ }
}
return undef;
}
@@ -193,34 +503,38 @@ sub sso_login {
sub handler {
my $r = shift;
my $requrl=$r->uri;
- 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) {
- $handle=$lonid->value;
- $handle=~s/\W//g;
+ if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) {
+ return OK;
}
- my $result = &sso_login($r,$lonid,$handle);
- if (defined($result)) {
- return $result
+ if (&Apache::lonnet::is_domainimage($requrl)) {
+ return OK;
}
+ my %user;
+ my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
- if ($r->dir_config("lonBalancer") eq 'yes') {
- $r->set_handlers('PerlResponseHandler'=>
- [\&Apache::switchserver::handler]);
+ unless (($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 '') {
- $r->log_reason("Cookie $handle not valid", $r->filename);
- } elsif ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
+ unless ((($requrl eq '/adm/switchserver') && (!$r->is_initial_req())) ||
+ ($requrl =~ m{^/public/$match_domain/$match_courseid/syllabus}) ||
+ ($requrl =~ m{^/adm/help/}) || ($requrl eq '/adm/sso') ||
+ ($requrl =~ m{^/res/$match_domain/$match_username/})) {
+ $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
@@ -233,6 +547,11 @@ sub handler {
if ($env{'user.name'} ne '' && $env{'user.domain'} ne '') {
# -------------------------------------------------------------- Resource State
+ my ($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 {
@@ -240,15 +559,212 @@ sub handler {
}
$env{'request.filename'} = $r->filename;
$env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl);
+ my ($suppext,$checkabsolute);
+ 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 (($name eq 'symb') || ($name eq 'usehttp')) {
+ $preserved .= $pair.'&';
+ }
+ if (($env{'request.course.id'}) && ($name eq 'folderpath')) {
+ if ($value =~ /^supplemental/) {
+ $suppext = 1;
+ }
+ }
+ }
+ $preserved =~ s/\&$//;
+ if ($preserved) {
+ $env{'request.external.querystring'} = $preserved;
+ }
+ }
+ if ($env{'request.course.id'}) {
+ $checkabsolute = 1;
+ }
+ } elsif ($env{'request.course.id'} &&
+ (($requrl =~ m{^/adm/$match_domain/$match_username/aboutme$}) ||
+ ($requrl eq "/public/$cdom/$cnum/syllabus") ||
+ ($requrl =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}))) {
+ my $query = $r->args;
+ if ($query) {
+ foreach my $pair (split(/&/,$query)) {
+ my ($name, $value) = split(/=/,$pair);
+ if ($name eq 'folderpath') {
+ if ($value =~ /^supplemental/) {
+ $suppext = 1;
+ }
+ last;
+ }
+ }
+ }
+ if ($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,1,1);
+ my $exphostname = &Apache::lonnet::hostname($lonhost);
+ my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname;
+ unless ($actual eq $expected) {
+ $env{'request.use_absolute'} = $expected;
+ }
+ }
+ }
# -------------------------------------------------------- Load POST parameters
&Apache::lonacc::get_posted_cgi($r);
+# ------------------------------------------------------ Check if load balancer
+
+ 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) || (($requrl eq '/adm/switchserver') && (!$r->is_initial_req()))) {
+ ($is_balancer,$otherserver) =
+ &Apache::lonnet::check_loadbalancing($env{'user.name'},
+ $env{'user.domain'});
+ if ($is_balancer) {
+ # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
+ my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
+ if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) {
+ $otherserver = $found_server;
+ }
+ unless ($requrl eq '/adm/switchserver') {
+ $r->set_handlers('PerlResponseHandler'=>
+ [\&Apache::switchserver::handler]);
+ }
+ if ($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'} = $r->uri;
+ }
+ }
+ }
+ if ($requrl=~m{^/+tiny/+$match_domain/+\w+$}) {
+ if ($env{'user.name'} eq 'public' &&
+ $env{'user.domain'} eq 'public') {
+ $env{'request.firsturl'}=$requrl;
+ return FORBIDDEN;
+ } else {
+ return OK;
+ }
+ }
# ---------------------------------------------------------------- Check access
my $now = time;
- if ($requrl !~ m{^/(?:adm|public|prtspool)/}
+ my ($check_symb,$check_access,$check_block,$access,$poss_symb);
+ if ($requrl !~ m{^/(?:adm|public|(?:prt|zip)spool)/}
|| $requrl =~ /^\/adm\/.*\/(smppg|bulletinboard)(\?|$ )/x) {
- my $access=&Apache::lonnet::allowed('bre',$requrl);
+ $check_access = 1;
+ }
+ if ((!$check_access) && ($env{'request.course.id'})) {
+ if (($requrl eq '/adm/viewclasslist') ||
+ ($requrl =~ m{^(/adm/wrapper|)\Q/uploaded/$cdom/$cnum/docs/\E}) ||
+ ($requrl =~ m{^/adm/.*/aboutme$}) ||
+ ($requrl=~m{^/adm/coursedocs/showdoc/}) ||
+ ($requrl=~m{^(/adm/wrapper|)/adm/$cdom/$cnum/\d+/ext\.tool$})) {
+ $check_block = 1;
+ }
+ }
+ if (($env{'request.course.id'}) && (!$suppext)) {
+ $requrl=~/\.(\w+)$/;
+ if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
+ ($requrl=~/^\/adm\/.*\/(aboutme|smppg|bulletinboard)(\?|$ )/x) ||
+ ($requrl=~/^\/adm\/wrapper\//) ||
+ ($requrl=~m|^/adm/coursedocs/showdoc/|) ||
+ ($requrl=~m|\.problem/smpedit$|) ||
+ ($requrl=~/^\/public\/.*\/syllabus$/) ||
+ ($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) ||
+ ($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/) ||
+ ($requrl=~m{^/adm/$cdom/$cnum/\d+/ext\.tool$})) {
+ $check_symb = 1;
+ }
+ }
+ if (($check_access) || ($check_block)) {
+ if ($check_symb) {
+ if ($env{'form.symb'}) {
+ $poss_symb=&Apache::lonnet::symbclean($env{'form.symb'});
+ } elsif (($env{'request.course.id'}) && ($r->args ne '')) {
+ my $query = $r->args;
+ foreach my $pair (split(/&/,$query)) {
+ my ($name, $value) = split(/=/,$pair);
+ $name = &unescape($name);
+ $value =~ tr/+/ /;
+ $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+ if ($name eq 'symb') {
+ $poss_symb = &Apache::lonnet::symbclean($value);
+ last;
+ }
+ }
+ }
+ if ($poss_symb) {
+ my ($possmap,$resid,$url)=&Apache::lonnet::decode_symb($poss_symb);
+ $url = &Apache::lonnet::clutter($url);
+ my $toplevelmap = $env{'course.'.$env{'request.course.id'}.'.url'};
+ unless (($url eq $requrl) && (($possmap eq $toplevelmap) ||
+ (&Apache::lonnet::is_on_map($possmap)))) {
+ undef($poss_symb);
+ }
+ if ($poss_symb) {
+ if ((!$env{'request.role.adv'}) && ($env{'acc.randomout'}) &&
+ ($env{'acc.randomout'}=~/\&\Q$poss_symb\E\&/)) {
+ undef($poss_symb);
+ } elsif ((!$env{'request.role.adv'}) && ($env{'acc.deeplinkout'}) &&
+ ($env{'acc.deeplinkout'}=~/\&\Q$poss_symb\E\&/)) {
+ undef($poss_symb);
+ }
+ }
+ }
+ if ($poss_symb) {
+ $access=&Apache::lonnet::allowed('bre',$requrl,$poss_symb);
+ } else {
+ $access=&Apache::lonnet::allowed('bre',$requrl,'','','','',1);
+ }
+ } else {
+ my $nodeeplinkcheck;
+ if (($check_access) && ($requrl =~ /\.(sequence|page)$/)) {
+ unless ($env{'form.navmap'}) {
+ if ($r->args ne '') {
+ &Apache::loncommon::get_unprocessed_cgi($r->args,['navmap']);
+ unless ($env{'form.navmap'}) {
+ $nodeeplinkcheck = 1;
+ }
+ }
+ }
+ }
+ $access=&Apache::lonnet::allowed('bre',$requrl,'','','','','',$nodeeplinkcheck);
+ }
+ }
+ if ($check_block) {
+ if ($access eq 'B') {
+ if ($poss_symb) {
+ if (&Apache::lonnet::symbverify($poss_symb,$requrl)) {
+ $env{'request.symb'} = $poss_symb;
+ }
+ }
+ &Apache::blockedaccess::setup_handler($r);
+ return OK;
+ }
+ } elsif ($check_access) {
+ if ($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;
@@ -257,9 +773,44 @@ sub handler {
&Apache::restrictedaccess::setup_handler($r);
return OK;
}
+ if ($access eq 'B') {
+ if ($poss_symb) {
+ if (&Apache::lonnet::symbverify($poss_symb,$requrl)) {
+ $env{'request.symb'} = $poss_symb;
+ }
+ }
+ &Apache::blockedaccess::setup_handler($r);
+ return OK;
+ }
+ if ($access eq 'D') {
+ &Apache::lonprotected::setup_handler($r);
+ return OK;
+ }
if (($access ne '2') && ($access ne 'F')) {
- $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
- return HTTP_NOT_ACCEPTABLE;
+ 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;
+ }
+ }
+ } elsif (($handle =~ /^publicuser_\d+$/) && (&Apache::lonnet::is_portfolio_url($requrl))) {
+ my $clientip = &Apache::lonnet::get_requestor_ip($r);
+ 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;
+ }
}
}
if ($requrl =~ m|^/prtspool/|) {
@@ -270,10 +821,19 @@ sub handler {
return HTTP_NOT_ACCEPTABLE;
}
}
+ if ($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;
@@ -282,30 +842,51 @@ sub handler {
# ------------------------------------------------------------- This is allowed
if ($env{'request.course.id'}) {
&Apache::lonnet::countacc($requrl);
- $requrl=~/\.(\w+)$/;
- if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
- ($requrl=~/^\/adm\/.*\/(aboutme|navmaps|smppg|bulletinboard)(\?|$ )/x) ||
- ($requrl=~/^\/adm\/wrapper\//) ||
- ($requrl=~m|^/adm/coursedocs/showdoc/|) ||
- ($requrl=~m|\.problem/smpedit$|) ||
- ($requrl=~/^\/public\/.*\/syllabus$/)) {
+ my $query=$r->args;
+ if ($check_symb) {
# ------------------------------------- This is serious stuff, get symb and log
- my $query=$r->args;
my $symb;
if ($query) {
- &Apache::loncommon::get_unprocessed_cgi($query,['symb']);
+ &Apache::loncommon::get_unprocessed_cgi($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,$mid]);
+ if (($requrl eq '/adm/navmaps') ||
+ ($requrl =~ m{^/adm/wrapper/}) ||
+ ($requrl =~ m{^/adm/coursedocs/showdoc/})) {
+ unless (&Apache::lonnet::symbverify($symb,$requrl)) {
+ if (&Apache::lonnet::is_on_map($requrl)) {
+ $symb = &Apache::lonnet::symbread($requrl);
+ unless (&Apache::lonnet::symbverify($symb,$requrl)) {
+ undef($symb);
+ }
+ }
+ }
+ if ($symb) {
+ if ($requrl eq '/adm/navmaps') {
+ my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
+ &Apache::lonnet::symblist($map,$murl => [$murl,$mid]);
+ } elsif (($requrl =~ m{^/adm/wrapper/}) ||
+ ($requrl =~ m{^/adm/coursedocs/showdoc/})) {
+ my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
+ if ($map =~ /\.page$/) {
+ my $mapsymb = &Apache::lonnet::symbread($map);
+ ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
+ }
+ &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
+ 'last_known' =>[$murl,$mid]);
+ }
+ }
} elsif ((&Apache::lonnet::symbverify($symb,$requrl)) ||
(($requrl=~m|(.*)/smpedit$|) &&
- &Apache::lonnet::symbverify($symb,$1))) {
+ &Apache::lonnet::symbverify($symb,$1)) ||
+ (($requrl=~m|(.*/aboutme)/portfolio$|) &&
+ &Apache::lonnet::symbverify($symb,$1))) {
my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
+ if (($map =~ /\.page$/) && ($requrl !~ /\.page$/)) {
+ my $mapsymb = &Apache::lonnet::symbread($map);
+ ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
+ }
&Apache::lonnet::symblist($map,$murl => [$murl,$mid],
'last_known' =>[$murl,$mid]);
} else {
@@ -316,29 +897,112 @@ sub handler {
return HTTP_NOT_ACCEPTABLE;
}
} else {
+ if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) {
+ $requrl = $1;
+ }
$symb=&Apache::lonnet::symbread($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 (&Apache::lonnet::is_on_map($requrl) && $symb) {
+ my ($encstate,$invalidsymb);
+ unless (&Apache::lonnet::symbverify($symb,$requrl,\$encstate)) {
+ $invalidsymb = 1;
+ #
+ # If $env{'request.enc'} inconsistent with encryption expected for $symb
+ # retrieved by lonnet::symbread(), call again to check for an instance of
+ # $requrl in the course for which expected encryption matches request.enc.
+ # If symb for different instance passes lonnet::symbverify(), use that as
+ # the symb for $requrl and call &Apache::lonnet::allowed() for that symb.
+ # Report invalid symb if there is no other symb. Redirect to /adm/ambiguous
+ # if multiple possible symbs consistent with request.enc available for $requrl.
+ #
+ if (($env{'request.enc'} && !$encstate) || (!$env{'request.enc'} && $encstate)) {
+ my %possibles;
+ my $nocache = 1;
+ my $oldsymb = $symb;
+ $symb = &Apache::lonnet::symbread($requrl,'','','',\%possibles,$nocache);
+ if (($symb) && ($symb ne $oldsymb)) {
+ if (&Apache::lonnet::symbverify($symb,$requrl)) {
+ my $access=&Apache::lonnet::allowed('bre',$requrl,$symb);
+ if ($access eq 'B') {
+ $env{'request.symb'} = $symb;
+ &Apache::blockedaccess::setup_handler($r);
+ return OK;
+ } elsif (($access eq '2') || ($access eq 'F')) {
+ $invalidsymb = '';
+ }
+ }
+ } elsif (keys(%possibles) > 1) {
+ $r->internal_redirect('/adm/ambiguous');
+ return OK;
+ }
+ }
+ if ($invalidsymb) {
+ if ($requrl eq '/adm/navmaps') {
+ undef($symb);
+ } else {
+ $r->log_reason('Invalid symb for '.$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,$mid]);
+ if ($requrl eq '/adm/navmaps') {
+ &Apache::lonnet::symblist($map,$murl =>[$murl,$mid]);
+ } else {
+ if (($map =~ /\.page$/) && ($requrl !~ /\.page$/)) {
+ my $mapsymb = &Apache::lonnet::symbread($map);
+ ($map,$mid,$murl)=&Apache::lonnet::decode_symb($mapsymb);
+ }
+ &Apache::lonnet::symblist($map,$murl =>[$murl,$mid],
+ 'last_known' =>[$murl,$mid]);
+ }
}
}
$env{'request.symb'}=$symb;
+ if (($env{'request.symbread.cached.'}) && ($env{'request.symbread.cached.'} ne $symb)) {
+ $env{'request.symbread.cached.'} = $symb;
+ }
&Apache::lonnet::courseacclog($symb);
} else {
# ------------------------------------------------------- This is other content
&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'} = $otherserver;
+ }
+ }
}
# -------------------------------------------- See if this is a public resource
if ($requrl=~m|^/+adm/+help/+|) {
@@ -346,7 +1010,8 @@ 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 $clientip = &Apache::lonnet::get_requestor_ip($r);
+ my $access=&Apache::lonnet::allowed('bre',$requrl,undef,undef,$clientip);
if ($access eq 'A') {
&Apache::restrictedaccess::setup_handler($r);
return OK;
@@ -375,64 +1040,9 @@ 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.