--- loncom/lonnet/perl/lonnet.pm 2019/08/25 02:43:21 1.1416
+++ loncom/lonnet/perl/lonnet.pm 2020/10/15 18:09:10 1.1428
@@ -1,7 +1,7 @@
# The LearningOnline Network
# TCP networking package
#
-# $Id: lonnet.pm,v 1.1416 2019/08/25 02:43:21 raeburn Exp $
+# $Id: lonnet.pm,v 1.1428 2020/10/15 18:09:10 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -1230,6 +1230,28 @@ sub choose_server {
return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
}
+sub get_course_sessions {
+ my ($cnum,$cdom,$lastactivity) = @_;
+ my %servers = &internet_dom_servers($cdom);
+ my %returnhash;
+ foreach my $server (sort(keys(%servers))) {
+ my $rep = &reply("coursesessions:$cdom:$cnum:$lastactivity",$server);
+ my @pairs=split(/\&/,$rep);
+ unless (($rep eq 'unknown_cmd') || ($rep =~ /^error/)) {
+ foreach my $item (@pairs) {
+ my ($key,$value)=split(/=/,$item,2);
+ $key = &unescape($key);
+ next if ($key =~ /^error: 2 /);
+ if (exists($returnhash{$key})) {
+ next if ($value < $returnhash{$key});
+ }
+ $returnhash{$key}=$value;
+ }
+ }
+ }
+ return %returnhash;
+}
+
# --------------------------------------------- Try to change a user's password
sub changepass {
@@ -2261,7 +2283,7 @@ sub inst_directory_query {
if ($homeserver ne '') {
unless ($homeserver eq $perlvar{'lonHostID'}) {
if ($srch->{'srchby'} eq 'email') {
- my $lcrev = &get_server_loncaparev(undef,$homeserver);
+ my $lcrev = &get_server_loncaparev($udom,$homeserver);
my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
if (($major eq '' && $minor eq '') || ($major < 2) ||
(($major == 2) && ($minor < 12))) {
@@ -2312,7 +2334,7 @@ sub usersearch {
if (&host_domain($tryserver) eq $dom) {
unless ($tryserver eq $perlvar{'lonHostID'}) {
if ($srch->{'srchby'} eq 'email') {
- my $lcrev = &get_server_loncaparev(undef,$tryserver);
+ my $lcrev = &get_server_loncaparev($dom,$tryserver);
my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
next if (($major eq '' && $minor eq '') || ($major < 2) ||
(($major == 2) && ($minor < 12)));
@@ -3361,6 +3383,32 @@ sub repcopy {
}
}
+# ------------------------------------------------- Unsubscribe from a resource
+
+sub unsubscribe {
+ my ($fname) = @_;
+ my $answer;
+ if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return $answer; }
+ $fname=~s/[\n\r]//g;
+ my $author=$fname;
+ $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
+ my ($udom,$uname)=split(/\//,$author);
+ my $home=homeserver($uname,$udom);
+ if ($home eq 'no_host') {
+ $answer = 'no_host';
+ } elsif (grep { $_ eq $home } ¤t_machine_ids()) {
+ $answer = 'home';
+ } else {
+ my $defdom = $perlvar{'lonDefDomain'};
+ if (&will_trust('content',$defdom,$udom)) {
+ $answer = reply("unsub:$fname",$home);
+ } else {
+ $answer = 'untrusted';
+ }
+ }
+ return $answer;
+}
+
# ------------------------------------------------ Get server side include body
sub ssi_body {
my ($filelink,%form)=@_;
@@ -3506,12 +3554,18 @@ sub remove_stale_resfile {
$stale = 1;
}
if ($stale) {
- unlink($fname);
- if ($uri!~/\.meta$/) {
- unlink($fname.'.meta');
+ if (unlink($fname)) {
+ if ($uri!~/\.meta$/) {
+ if (-e $fname.'.meta') {
+ unlink($fname.'.meta');
+ }
+ }
+ my $unsubresult = &unsubscribe($fname);
+ unless ($unsubresult eq 'ok') {
+ &logthis("no unsub of $fname from $homeserver, reason: $unsubresult");
+ }
+ $removed = 1;
}
- &reply("unsub:$fname",$homeserver);
- $removed = 1;
}
}
}
@@ -3661,6 +3715,18 @@ sub can_edit_resource {
$forceedit = 1;
}
$cfile = $resurl;
+ } elsif (($resurl =~ m{^/ext/}) && ($symb ne '')) {
+ my ($map,$id,$res) = &decode_symb($symb);
+ if ($map =~ /\.page$/) {
+ $incourse = 1;
+ if ($env{'form.forceedit'}) {
+ $forceview = 1;
+ $cfile = $map;
+ } else {
+ $forceedit = 1;
+ $cfile = '/adm/wrapper'.$resurl;
+ }
+ }
} elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
$incourse = 1;
if ($env{'form.forceedit'}) {
@@ -3686,13 +3752,13 @@ sub can_edit_resource {
$cfile = $template;
}
} elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
- $incourse = 1;
- if ($env{'form.forceedit'}) {
- $forceview = 1;
- } else {
- $forceedit = 1;
- }
- $cfile = $resurl;
+ $incourse = 1;
+ if ($env{'form.forceedit'}) {
+ $forceview = 1;
+ } else {
+ $forceedit = 1;
+ }
+ $cfile = $resurl;
} elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
$incourse = 1;
if ($env{'form.forceedit'}) {
@@ -7970,7 +8036,7 @@ sub customaccess {
# ------------------------------------------------- Check for a user privilege
sub allowed {
- my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
+ my ($priv,$uri,$symb,$role,$clientip,$noblockcheck,$ignorecache)=@_;
my $ver_orguri=$uri;
$uri=&deversion($uri);
my $orguri=$uri;
@@ -8201,7 +8267,7 @@ sub allowed {
} elsif ($noblockcheck) {
$thisallowed.=$value;
} else {
- my @blockers = &has_comm_blocking($priv,$symb,$uri);
+ my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
if (@blockers > 0) {
$thisallowed = 'B';
} else {
@@ -8224,7 +8290,7 @@ sub allowed {
} elsif ($noblockcheck) {
$thisallowed='F';
} else {
- my @blockers = &has_comm_blocking($priv,$symb,$refuri);
+ my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
if (@blockers > 0) {
$thisallowed = 'B';
} else {
@@ -8297,7 +8363,7 @@ sub allowed {
if ($noblockcheck) {
$thisallowed.=$value;
} else {
- my @blockers = &has_comm_blocking($priv,$symb,$uri);
+ my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
if (@blockers > 0) {
$thisallowed = 'B';
} else {
@@ -8310,7 +8376,7 @@ sub allowed {
$checkreferer=0;
}
}
-
+
if ($checkreferer) {
my $refuri=$env{'httpref.'.$orguri};
unless ($refuri) {
@@ -8342,7 +8408,7 @@ sub allowed {
} elsif ($noblockcheck) {
$thisallowed.=$value;
} else {
- my @blockers = &has_comm_blocking($priv,$symb,$refuri);
+ my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
if (@blockers > 0) {
$thisallowed = 'B';
} else {
@@ -8428,7 +8494,7 @@ sub allowed {
}
}
}
-
+
#
# Rest of the restrictions depend on selected course
#
@@ -8597,22 +8663,27 @@ sub constructaccess {
#
# User for whom data are being temporarily cached.
my $cacheduser='';
+# Course for which data are being temporarily cached.
+my $cachedcid='';
# Cached blockers for this user (a hash of blocking items).
my %cachedblockers=();
# When the data were last cached.
my $cachedlast='';
sub load_all_blockers {
- my ($uname,$udom,$blocks)=@_;
+ my ($uname,$udom)=@_;
if (($uname ne '') && ($udom ne '')) {
if (($cacheduser eq $uname.':'.$udom) &&
+ ($cachedcid eq $env{'request.course.id'}) &&
(abs($cachedlast-time)<5)) {
return;
}
}
$cachedlast=time;
$cacheduser=$uname.':'.$udom;
- %cachedblockers = &get_commblock_resources($blocks);
+ $cachedcid=$env{'request.course.id'};
+ %cachedblockers = &get_commblock_resources();
+ return;
}
sub get_comm_blocks {
@@ -8692,14 +8763,21 @@ sub get_commblock_resources {
if ($mapsymb) {
if (ref($navmap)) {
my $mapres = $navmap->getBySymb($mapsymb);
- @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
- foreach my $res (@to_test) {
- my $symb = $res->symb();
- next if ($symb eq $mapsymb);
- if ($symb ne '') {
+ if (ref($mapres)) {
+ my $first = $mapres->map_start();
+ my $finish = $mapres->map_finish();
+ my $it = $navmap->getIterator($first,$finish,undef,0,0);
+ my $res;
+ while ($res = $it->next(undef,1)) {
+ next unless (ref($res));
+ my $symb = $res->symb();
+ next if (($symb eq $mapsymb) || ($symb eq ''));
@interval=&EXT("resource.0.interval",$symb);
if ($interval[1] eq 'map') {
- last;
+ if ($res->answerable()) {
+ push(@to_test,$res);
+ last;
+ }
}
}
}
@@ -8750,17 +8828,23 @@ sub get_commblock_resources {
}
sub has_comm_blocking {
- my ($priv,$symb,$uri,$blocks) = @_;
+ my ($priv,$symb,$uri,$ignoresymbdb,$noenccheck,$blocked,$blocks) = @_;
my @blockers;
return unless ($env{'request.course.id'});
return unless ($priv eq 'bre');
return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
return if ($env{'request.state'} eq 'construct');
- &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
- return unless (keys(%cachedblockers) > 0);
+ my %blockinfo;
+ if (ref($blocks) eq 'HASH') {
+ %blockinfo = &get_commblock_resources($blocks);
+ } else {
+ &load_all_blockers($env{'user.name'},$env{'user.domain'});
+ %blockinfo = %cachedblockers;
+ }
+ return unless (keys(%blockinfo) > 0);
my (%possibles,@symbs);
if (!$symb) {
- $symb = &symbread($uri,1,1,1,\%possibles);
+ $symb = &symbread($uri,1,1,1,\%possibles,$ignoresymbdb,$noenccheck);
}
if ($symb) {
@symbs = ($symb);
@@ -8771,34 +8855,38 @@ sub has_comm_blocking {
foreach my $symb (@symbs) {
last if ($noblock);
my ($map,$resid,$resurl)=&decode_symb($symb);
- foreach my $block (keys(%cachedblockers)) {
+ foreach my $block (keys(%blockinfo)) {
if ($block =~ /^firstaccess____(.+)$/) {
my $item = $1;
- if (($item eq $map) || ($item eq $symb)) {
- $noblock = 1;
- last;
+ unless ($blocked) {
+ if (($item eq $map) || ($item eq $symb)) {
+ $noblock = 1;
+ last;
+ }
}
}
- if (ref($cachedblockers{$block}) eq 'HASH') {
- if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
- if ($cachedblockers{$block}{'resources'}{$symb}) {
+ if (ref($blockinfo{$block}) eq 'HASH') {
+ if (ref($blockinfo{$block}{'resources'}) eq 'HASH') {
+ if ($blockinfo{$block}{'resources'}{$symb}) {
unless (grep(/^\Q$block\E$/,@blockers)) {
push(@blockers,$block);
}
}
}
- }
- if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
- if ($cachedblockers{$block}{'maps'}{$map}) {
- unless (grep(/^\Q$block\E$/,@blockers)) {
- push(@blockers,$block);
+ if (ref($blockinfo{$block}{'maps'}) eq 'HASH') {
+ if ($blockinfo{$block}{'maps'}{$map}) {
+ unless (grep(/^\Q$block\E$/,@blockers)) {
+ push(@blockers,$block);
+ }
}
}
}
}
}
- return if ($noblock);
- return @blockers;
+ unless ($noblock) {
+ return @blockers;
+ }
+ return;
}
}
@@ -10541,14 +10629,19 @@ sub writecoursepref {
sub createcourse {
my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
- $course_owner,$crstype,$cnum,$context,$category)=@_;
+ $course_owner,$crstype,$cnum,$context,$category,$callercontext)=@_;
$url=&declutter($url);
my $cid='';
if ($context eq 'requestcourses') {
my $can_create = 0;
my ($ownername,$ownerdom) = split(':',$course_owner);
if ($udom eq $ownerdom) {
- if (&usertools_access($ownername,$ownerdom,$category,undef,
+ my $reload;
+ if (($callercontext eq 'auto') &&
+ ($ownerdom eq $env{'user.domain'}) && ($ownername eq $env{'user.name'})) {
+ $reload = 'reload';
+ }
+ if (&usertools_access($ownername,$ownerdom,$category,$reload,
$context)) {
$can_create = 1;
}
@@ -13112,18 +13205,16 @@ sub symbverify {
if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
&GDBM_READER(),0640)) {
- my $noclutter;
if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
$thisurl =~ s/\?.+$//;
if ($map =~ m{^uploaded/.+\.page$}) {
$thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
$thisurl =~ s{^\Qhttp://https://\E}{https://};
- $noclutter = 1;
}
}
my $ids;
- if ($noclutter) {
- $ids=$bighash{'ids_'.$thisurl};
+ if ($map =~ m{^uploaded/.+\.page$}) {
+ $ids=$bighash{'ids_'.&clutter_with_no_wrapper($thisurl)};
} else {
$ids=$bighash{'ids_'.&clutter($thisurl)};
}
@@ -13223,19 +13314,22 @@ sub deversion {
# ------------------------------------------------------ Return symb list entry
sub symbread {
- my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
+ my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles,
+ $ignoresymbdb,$noenccheck)=@_;
my $cache_str='request.symbread.cached.'.$thisfn;
if (defined($env{$cache_str})) {
- if ($ignorecachednull) {
- return $env{$cache_str} unless ($env{$cache_str} eq '');
- } else {
- return $env{$cache_str};
+ unless (ref($possibles) eq 'HASH') {
+ if ($ignorecachednull) {
+ return $env{$cache_str} unless ($env{$cache_str} eq '');
+ } else {
+ return $env{$cache_str};
+ }
}
}
# no filename provided? try from environment
unless ($thisfn) {
if ($env{'request.symb'}) {
- return $env{$cache_str}=&symbclean($env{'request.symb'});
+ return $env{$cache_str}=&symbclean($env{'request.symb'});
}
$thisfn=$env{'request.filename'};
}
@@ -13258,10 +13352,18 @@ sub symbread {
if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
$targetfn=$1;
}
- if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
- &GDBM_READER(),0640)) {
- $syval=$hash{$targetfn};
- untie(%hash);
+ unless ($ignoresymbdb) {
+ if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
+ &GDBM_READER(),0640)) {
+ $syval=$hash{$targetfn};
+ untie(%hash);
+ }
+ if ($syval && $checkforblock) {
+ my @blockers = &has_comm_blocking('bre',$syval,$thisfn,$ignoresymbdb,$noenccheck);
+ if (@blockers) {
+ $syval='';
+ }
+ }
}
# ---------------------------------------------------------- There was an entry
if ($syval) {
@@ -13294,13 +13396,18 @@ sub symbread {
$syval=&encode_symb($bighash{'map_id_'.$mapid},
$resid,$thisfn);
if (ref($possibles) eq 'HASH') {
- $possibles->{$syval} = 1;
+ unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
+ $possibles->{$syval} = 1;
+ }
}
if ($checkforblock) {
- my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
- if (@blockers) {
- $syval = '';
- return;
+ unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
+ my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids},'',$noenccheck);
+ if (@blockers) {
+ $syval = '';
+ untie(%bighash);
+ return $env{$cache_str}='';
+ }
}
}
} elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
@@ -13319,12 +13426,13 @@ sub symbread {
if ($bighash{'map_type_'.$mapid} ne 'page') {
my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
$resid,$thisfn);
- if (ref($possibles) eq 'HASH') {
- $possibles->{$syval} = 1;
- }
+ next if ($bighash{'randomout_'.$id} && !$env{'request.role.adv'});
+ next unless (($noenccheck) || ($bighash{'encrypted_'.$id} eq $env{'request.enc'}));
if ($checkforblock) {
- my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
- unless (@blockers > 0) {
+ my @blockers = &has_comm_blocking('bre',$poss_syval,$file,'',$noenccheck);
+ if (@blockers > 0) {
+ $syval = '';
+ } else {
$syval = $poss_syval;
$realpossible++;
}
@@ -13332,6 +13440,11 @@ sub symbread {
$syval = $poss_syval;
$realpossible++;
}
+ if ($syval) {
+ if (ref($possibles) eq 'HASH') {
+ $possibles->{$syval} = 1;
+ }
+ }
}
}
}