--- loncom/homework/daxeopen.pm 2017/02/24 17:34:55 1.6
+++ loncom/homework/daxeopen.pm 2023/08/23 22:57:39 1.12
@@ -1,7 +1,7 @@
# The LearningOnline Network
# Opening converted problems and directory listings for Daxe
#
-# $Id: daxeopen.pm,v 1.6 2017/02/24 17:34:55 damieng Exp $
+# $Id: daxeopen.pm,v 1.12 2023/08/23 22:57:39 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -28,8 +28,9 @@
###
package Apache::daxeopen;
+use strict;
-use Apache::Constants;
+use Apache::Constants qw(:common);
use DateTime;
use Try::Tiny;
use File::stat;
@@ -41,16 +42,16 @@ use Apache::lonnet;
use Apache::pre_xml;
use Apache::html_to_xml;
use Apache::post_xml;
-
+use Apache::lonlocal;
sub handler {
my $request = shift;
my $uri = $request->uri;
- $uri =~ s/^\/daxeopen//;
+ $uri =~ s{^/daxeopen}{};
&Apache::loncommon::no_cache($request);
- if ($uri =~ /\/$/) {
+ if ($uri =~ m{/$}) {
return directory_listing($uri, $request);
- } elsif ($uri =~ /^\/priv\/.*\.(task|problem|exam|quiz|assess|survey|library|xml|html|htm|xhtml|xhtm)$/) {
+ } elsif ($uri =~ m{^/priv/.*\.(task|problem|exam|quiz|assess|survey|library|xml|html|htm|xhtml|xhtm)$}) {
return convert_problem($uri, $request);
} else {
# Apache should send other files directly
@@ -61,13 +62,10 @@ sub handler {
sub convert_problem {
my ($uri, $request) = @_;
-
- if ($uri =~ /^\/priv\/([^\/]+)\/([^\/]+)\//) {
- my ($domain, $user) = ($1, $2);
- my ($uname, $udom) = ($env{'user.name'}, $env{'user.domain'});
- if (!defined $uname || !defined $udom || $domain ne $udom || $user ne $uname) {
+ if ($uri =~ m{^/priv/$match_domain/$match_username/}) {
+ unless (&has_priv_access($uri)) {
$request->content_type('text/plain');
- $request->print("Forbidden URI: $uri");
+ $request->print(&mt('Forbidden URI: [_1]',$uri));
$request->status(403);
return OK;
}
@@ -88,13 +86,13 @@ sub convert_problem {
$case_sensitive = 0;
}
$textref = &Apache::html_to_xml::html_to_xml($textref, $warnings, $case_sensitive);
- my $text = &Apache::post_xml::post_xml($textref, $file, $perlvar{'lonDocRoot'}, $warnings);
+ my $text = &Apache::post_xml::post_xml($textref, $file, $Apache::lonnet::perlvar{'lonDocRoot'}, $warnings);
&Apache::loncommon::content_type($request, 'text/xml', 'utf-8');
$request->print($text);
return OK;
} catch {
$request->content_type('text/plain');
- $request->print("convert failed for $file: $_");
+ $request->print(&mt('convert failed for [_1]:',$file)." $_");
$request->status(406);
return OK;
};
@@ -108,34 +106,35 @@ sub directory_listing {
$res .= "<directory name=\"/\">\n";
$res .= "<directory name=\"priv\"/>\n";
$res .= "<directory name=\"res\"/>\n";
- } elsif ($uri !~ /^\/(priv|res)\//) {
+ } elsif ($uri !~ m{^/(priv|res)/}) {
$request->content_type('text/plain');
- $request->print("Not found: $uri");
+ $request->print(&mt('Not found: [_1]',$uri));
$request->status(404);
return OK;
- } elsif ($uri =~ /^\/res\//) {
+ } elsif ($uri =~ m{^/res/}) {
# NOTE: dirlist does not return an error for /res/idontexist/
- (my $listref, $listerror) = &Apache::lonnet::dirlist($uri);
+ my ($listref, $listerror) = &Apache::lonnet::dirlist($uri);
if ($listerror) {
$request->content_type('text/plain');
- $request->print("listing error: $listerror");
+ $request->print(&mt('listing error: [_1]',$listerror));
$request->status(406);
return OK;
- } elsif ($uri =~ /^\/res\/[^\/]+\/$/ && scalar(@{$listref}) == 0) {
+ } elsif ($uri =~ m{^/res/[^/]+/$} && scalar(@{$listref}) == 0) {
$request->content_type('text/plain');
- $request->print("Not found: $uri");
+ $request->print(&mt('Not found: [_1]',$uri));
$request->status(404);
return OK;
}
my $dirname = $uri;
- $dirname =~ s/^.*\/([^\/]*)$/$1/;
+ $dirname =~ s{^.*/([^/]*)$}{$1};
$res .= "<directory name=\"$dirname/\">\n";
+ my (%is_course,%is_courseauthor);
if (ref($listref) eq 'ARRAY') {
my @lines = @{$listref};
foreach my $line (@lines) {
my ($path, $dom, undef, $testdir, undef, undef, undef, undef, $size, undef, $mtime, undef, undef, undef, $obs, undef) = split(/\&/, $line, 16);
my $isdir = ($testdir & 16384) || $dom =~ /^(user|domain)$/;
- $path =~ s/^\/home\/httpd\/html\/res\///;
+ $path =~ s{^/home/httpd/html/res/}{};
next if $path eq '.' || $path eq '..';
next if $path =~ /\.meta$/ || $obs || $path =~ /\.\d+\.[^.]+$/;
if ($dom ne 'domain') {
@@ -147,11 +146,32 @@ sub directory_listing {
($udom, $uname) = ($uri =~ m{^/res/($match_domain)/($match_courseid)});
}
if ($udom ne '' && $uname ne '') {
- # remove courses from the list
- next if (&Apache::lonnet::is_course($udom, $uname));
+ my $key = $udom.':'.$uname;
+ if (exists($is_course{$key})) {
+ if ($is_course{$key}) {
+ next unless ($is_courseauthor{$key});
+ }
+ } else {
+ if (&Apache::lonnet::is_course($udom, $uname)) {
+ $is_course{$key} = 1;
+ if ($env{'request.course.id'}) {
+ my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+ my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+ if (($cdom eq $udom) && ($cnum eq $uname)) {
+ if (&Apache::lonnet::allowed('mdc', $env{'request.course.id'})) {
+ $is_courseauthor{$key} = 1;
+ }
+ }
+ }
+ # remove courses from the list
+ next unless ($is_courseauthor{$key});
+ } else {
+ $is_course{$key} = 0;
+ }
+ }
}
}
- $path =~ s/\/$//;
+ $path =~ s{/$}{};
my $name = $path;
if ($isdir) {
$res .= "<directory name=\"$name\"/>\n";
@@ -163,48 +183,56 @@ sub directory_listing {
}
}
} elsif ($uri eq '/priv/') {
- my $udom = $env{'user.domain'};
- if (!defined $udom) {
+ my $referrer = $request->headers_in->{'Referer'};
+ my $defdom = &get_defdom($referrer);
+ if (!defined $defdom) {
$request->content_type('text/plain');
- $request->print("Forbidden URI: $uri");
+ $request->print(&mt('Forbidden URI: [_1]',$uri));
$request->status(403);
return OK;
}
$res .= "<directory name=\"priv\">\n";
- $res .= "<directory name=\"$udom\"/>\n";
- } elsif ($uri =~ /^\/priv\/([^\/]+)\/$/) {
+ $res .= "<directory name=\"$defdom\"/>\n";
+ } elsif ($uri =~ m{^/priv/($match_domain)/$}) {
my $domain = $1;
- my ($uname, $udom) = ($env{'user.name'}, $env{'user.domain'});
- if (!defined $uname || !defined $udom || $domain ne $udom) {
+ my $referrer = $request->headers_in->{'Referer'};
+ my $defdom = &get_defdom($referrer);
+ if ($domain ne $defdom) {
$request->content_type('text/plain');
- $request->print("Forbidden URI: $uri");
+ $request->print(&mt('Forbidden URI: [_1]',$uri));
$request->status(403);
return OK;
}
+ my $defname = &get_defname($domain,$referrer);
$res .= "<directory name=\"$domain\">\n";
- $res .= "<directory name=\"$uname\"/>\n";
- } elsif ($uri =~ /^\/priv\/([^\/]+)\/([^\/]+)\//) {
- my ($domain, $user) = ($1, $2);
- my ($uname, $udom) = ($env{'user.name'}, $env{'user.domain'});
- if (!defined $uname || !defined $udom || $domain ne $udom || $user ne $uname) {
+ $res .= "<directory name=\"$defname\"/>\n";
+ } elsif ($uri =~ m{^/priv/($match_domain)\/($match_username)/}) {
+ unless (&has_priv_access($uri)) {
$request->content_type('text/plain');
- $request->print("Forbidden URI: $uri");
+ $request->print(&mt('Forbidden URI: [_1]',$uri));
$request->status(403);
return OK;
}
my $dirpath = &Apache::lonnet::filelocation('', $uri);
if (! -e $dirpath) {
$request->content_type('text/plain');
- $request->print("Not found: $uri");
+ $request->print(&mt('Not found: [_1]',$uri));
$request->status(404);
return OK;
}
- $dirpath =~ s/\/$//;
- opendir my $dir, $dirpath or die "Cannot open directory: $dirpath";
- my @files = readdir $dir;
- closedir $dir;
+ $dirpath =~ s{/$}{};
+ my @files;
+ if (opendir(my $dir, $dirpath)) {
+ @files = readdir($dir);
+ closedir($dir);
+ } else {
+ $request->content_type('text/plain');
+ $request->print(&mt('Error opening directory: [_1]',$dirpath));
+ $request->status(403);
+ return OK;
+ }
my $dirname = $dirpath;
- $dirname =~ s/^.*\/([^\/]*)$/$1/;
+ $dirname =~ s{^.*/([^/]*)$}{$1};
$res .= "<directory name=\"$dirname\">\n";
foreach my $name (@files) {
if ($name eq '.' || $name eq '..') {
@@ -213,7 +241,7 @@ sub directory_listing {
if ($name =~ /\.(bak|log|meta|save)$/) {
next;
}
- $sb = stat($dirpath.'/'.$name);
+ my $sb = stat($dirpath.'/'.$name);
my $mode = $sb->mode;
if (S_ISDIR($mode)) {
$res .= "<directory name=\"$name\"/>\n";
@@ -230,7 +258,7 @@ sub directory_listing {
}
} else {
$request->content_type('text/plain');
- $request->print("Not found: $uri");
+ $request->print(&mt('Not found: [_1]',$uri));
$request->status(404);
return OK;
}
@@ -240,5 +268,85 @@ sub directory_listing {
return OK;
}
+sub has_priv_access {
+ my ($uri) = @_;
+ my ($ownername,$ownerdom,$ownerhome) =
+ &Apache::lonnet::constructaccess($uri);
+ my $allowed;
+ if (($ownername ne '') && ($ownerdom ne '') && ($ownerhome ne '')) {
+ unless ($ownerhome eq 'no_host') {
+ my @hosts = &Apache::lonnet::current_machine_ids();
+ if (grep(/^\Q$ownerhome\E$/,@hosts)) {
+ $allowed = 1;
+ }
+ }
+ }
+ return $allowed;
+}
+
+sub get_defdom {
+ my ($referrer) = @_;
+ my $defdom;
+ if ($env{'request.role'} =~ m{^au\./($match_domain)/$}) {
+ $defdom = $1;
+ } elsif ($env{'request.role'} =~ m{^(?:ca|aa)\.($match_domain)/($match_username)$}) {
+ $defdom = $1;
+ } elsif ($env{'request.course.id'}) {
+ if ($referrer =~ m{\Qfile=/daxeopen/priv/\E($match_domain)/($match_username)/}) {
+ my ($possdom,$possuname) = ($1,$2);
+ if (&Apache::lonnet::is_course($possdom,$possuname)) {
+ my $crsurl = &Apache::lonnet::courseid_to_courseurl($env{'request.course.id'});
+ if ($crsurl eq "/$possdom/$possuname") {
+ $defdom = $possdom;
+ }
+ } else {
+ if (&Apache::lonnet::domain($possdom) ne '') {
+ $defdom = $possdom;
+ }
+ }
+ }
+ }
+ if ($defdom eq '') {
+ my ($is_adv,$is_author) = &Apache::lonnet::is_advanced_user($env{'user.domain'},$env{'user.name'});
+ if ($is_author) {
+ $defdom = $env{'user.domain'};
+ }
+ }
+ return $defdom;
+}
+
+sub get_defname {
+ my ($domain,$referrer) = @_;
+ my $defname;
+ if ($env{'request.role'} eq "au./$domain/") {
+ $defname = $env{'user.name'};
+ } elsif ($env{'request.role'} =~ m{^(?:ca|aa)\./\Q$domain\E/($match_username)$}) {
+ $defname = $1;
+ } elsif ($env{'request.course.id'}) {
+ if ($referrer =~ m{\Qfile=/daxeopen/priv/\E($match_domain)/($match_username)/}) {
+ my ($possdom,$possuname) = ($1,$2);
+ if ($domain eq $possdom) {
+ if (&Apache::lonnet::is_course($possdom,$possuname)) {
+ my $crsurl = &Apache::lonnet::courseid_to_courseurl($env{'request.course.id'});
+ if ($crsurl eq "/$possdom/$possuname") {
+ $defname = $possuname;
+ }
+ } else {
+ unless (&Apache::lonnet::homeserver($possuname,$possdom) eq 'no_host') {
+ $defname = $possuname;
+ }
+ }
+ }
+ }
+ }
+ if ($defname eq '') {
+ my ($is_adv,$is_author) = &Apache::lonnet::is_advanced_user($domain,$env{'user.name'});
+ if ($is_author) {
+ $defname = $env{'user.name'};
+ }
+ }
+ return $defname;
+}
+
1;
__END__