--- loncom/Lond.pm 2022/01/19 16:47:51 1.8.2.3 +++ loncom/Lond.pm 2022/02/20 21:06:30 1.8.2.3.2.3 @@ -1,6 +1,6 @@ # The LearningOnline Network # -# $Id: Lond.pm,v 1.8.2.3 2022/01/19 16:47:51 raeburn Exp $ +# $Id: Lond.pm,v 1.8.2.3.2.3 2022/02/20 21:06:30 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -37,7 +37,8 @@ use lib '/home/httpd/lib/perl/'; use LONCAPA; use Apache::lonnet; use GDBM_File; - +use Net::OAuth; +use Crypt::CBC; sub dump_with_regexp { my ( $tail, $clientversion ) = @_; @@ -830,6 +831,215 @@ sub get_dom { return $qresult; } +sub store_dom { + my ($userinput) = @_; + my ($cmd,$dom,$namespace,$rid,$what) =split(/:/,$userinput); + my $hashref = &tie_domain_hash($dom,$namespace,&GDBM_WRCREAT(),"S","$rid:$what") or + return "error: ".($!+0)." tie(GDBM) Failed while attempting $cmd"; + $hashref->{"version:$rid"}++; + my $version=$hashref->{"version:$rid"}; + my $allkeys=''; + my @pairs=split(/\&/,$what); + foreach my $pair (@pairs) { + my ($key,$value)=split(/=/,$pair); + $allkeys.=$key.':'; + $hashref->{"$version:$rid:$key"}=$value; + } + my $now = time; + $hashref->{"$version:$rid:timestamp"}=$now; + $allkeys.='timestamp'; + $hashref->{"$version:keys:$rid"}=$allkeys; + &untie_user_hash($hashref) or + return "error: ".($!+0)." untie(GDBM) Failed while attempting $cmd"; + return 'ok'; +} + +sub restore_dom { + my ($userinput) = @_; + my ($cmd,$dom,$namespace,$rid) = split(/:/,$userinput); + my $hashref = &tie_domain_hash($dom,$namespace,&GDBM_READER()) or + return "error: ".($!+0)." tie(GDBM) Failed while attempting $cmd"; + my $qresult=''; + if (ref($hashref)) { + chomp($rid); + my $version=$hashref->{"version:$rid"}; + $qresult.="version=$version&"; + my $scope; + for ($scope=1;$scope<=$version;$scope++) { + my $vkeys=$hashref->{"$scope:keys:$rid"}; + my @keys=split(/:/,$vkeys); + my $key; + $qresult.="$scope:keys=$vkeys&"; + foreach $key (@keys) { + $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&"; + } + } + $qresult=~s/\&$//; + } + &untie_user_hash($hashref) or + return "error: ".($!+0)." untie(GDBM) Failed while attempting $cmd"; + return $qresult; +} + +sub crslti_itemid { + my ($cdom,$cnum,$url,$method,$params,$loncaparev) = @_; + unless (ref($params) eq 'HASH') { + return; + } + if (($cdom eq '') || ($cnum eq '')) { + return; + } + my ($itemid,$consumer_key,$secret); + + if (exists($params->{'oauth_callback'})) { + $Net::OAuth::PROTOCOL_VERSION = Net::OAuth::PROTOCOL_VERSION_1_0A; + } else { + $Net::OAuth::PROTOCOL_VERSION = Net::OAuth::PROTOCOL_VERSION_1_0; + } + + my $consumer_key = $params->{'oauth_consumer_key'}; + return if ($consumer_key eq ''); + + my (%crslti,%crslti_by_key); + my $hashid=$cdom.'_'.$cnum; + my ($result,$cached)=&Apache::lonnet::is_cached_new('courseltienc',$hashid); + if (defined($cached)) { + if (ref($result) eq 'HASH') { + %crslti = %{$result}; + } + } else { + my $reply = &dump_with_regexp(join(":",($cdom,$cnum,'nohist_ltienc','','')),$loncaparev); + %crslti = %{&Apache::lonnet::unserialize($reply)}; + my $cachetime = 24*60*60; + &Apache::lonnet::do_cache_new('courseltienc',$hashid,\%crslti,$cachetime); + } + + return if (!keys(%crslti)); + + foreach my $id (keys(%crslti)) { + if (ref($crslti{$id}) eq 'HASH') { + my $key = $crslti{$id}{'key'}; + if (($key ne '') && ($crslti{$id}{'secret'} ne '')) { + push(@{$crslti_by_key{$key}},$id); + } + } + } + + return if (!keys(%crslti_by_key)); + + my %courselti = &Apache::lonnet::get_course_lti($cnum,$cdom,'provider'); + + if (ref($crslti_by_key{$consumer_key}) eq 'ARRAY') { + foreach my $id (@{$crslti_by_key{$consumer_key}}) { + my $secret = $crslti{$id}{'secret'}; + if (ref($courselti{$id}) eq 'HASH') { + if ((exists($courselti{$id}{'cipher'})) && + ($courselti{$id}{'cipher'} =~ /^\d+$/)) { + my $keynum = $courselti{$id}{'cipher'}; + my $privkey = &get_dom("getdom:$cdom:private:$keynum:lti:key"); + if ($privkey ne '') { + my $cipher = new Crypt::CBC($privkey); + $secret = $cipher->decrypt_hex($secret); + } + } + } + my $request = Net::OAuth->request('request token')->from_hash($params, + request_url => $url, + request_method => $method, + consumer_secret => $secret,); + if ($request->verify()) { + $itemid = $id; + last; + } + } + } + return $itemid; +} + +sub domlti_itemid { + my ($dom,$context,$url,$method,$params,$loncaparev) = @_; + unless (ref($params) eq 'HASH') { + return; + } + if ($dom eq '') { + return; + } + my ($itemid,$consumer_key,$secret); + + if (exists($params->{'oauth_callback'})) { + $Net::OAuth::PROTOCOL_VERSION = Net::OAuth::PROTOCOL_VERSION_1_0A; + } else { + $Net::OAuth::PROTOCOL_VERSION = Net::OAuth::PROTOCOL_VERSION_1_0; + } + + my $consumer_key = $params->{'oauth_consumer_key'}; + return if ($consumer_key eq ''); + + my ($name,$cachename); + if ($context eq 'linkprot') { + $name = $context; + } else { + $name = 'lti'; + } + $cachename = $name.'enc'; + my %ltienc; + my ($encresult,$enccached)=&Apache::lonnet::is_cached_new($cachename,$dom); + if (defined($enccached)) { + if (ref($encresult) eq 'HASH') { + %ltienc = %{$encresult}; + } + } else { + my $reply = &get_dom("getdom:$dom:encconfig:$name"); + my $ltiencref = &Apache::lonnet::thaw_unescape($reply); + if (ref($ltiencref) eq 'HASH') { + %ltienc = %{$ltiencref}; + } + my $cachetime = 24*60*60; + &Apache::lonnet::do_cache_new($cachename,$dom,\%ltienc,$cachetime); + } + + return if (!keys(%ltienc)); + + my %lti_by_key; + foreach my $id (keys(%ltienc)) { + if (ref($ltienc{$id}) eq 'HASH') { + my $key = $ltienc{$id}{'key'}; + if (($key ne '') && ($ltienc{$id}{'secret'} ne '')) { + push(@{$lti_by_key{$key}},$id); + } + } + } + return if (!keys(%lti_by_key)); + + my %lti = &Apache::lonnet::get_domain_lti($dom,$context); + + if (ref($lti_by_key{$consumer_key}) eq 'ARRAY') { + foreach my $id (@{$lti_by_key{$consumer_key}}) { + my $secret = $ltienc{$id}{'secret'}; + if (ref($lti{$id}) eq 'HASH') { + if ((exists($lti{$id}{'cipher'})) && + ($lti{$id}{'cipher'} =~ /^\d+$/)) { + my $keynum = $lti{$id}{'cipher'}; + my $privkey = &get_dom("getdom:$dom:private:$keynum:lti:key"); + if ($privkey ne '') { + my $cipher = new Crypt::CBC($privkey); + $secret = $cipher->decrypt_hex($secret); + } + } + } + my $request = Net::OAuth->request('request token')->from_hash($params, + request_url => $url, + request_method => $method, + consumer_secret => $secret,); + if ($request->verify()) { + $itemid = $id; + last; + } + } + } + return $itemid; +} + 1; __END__