--- loncom/lonnet/perl/lonnet.pm 2020/05/13 01:58:16 1.1421
+++ loncom/lonnet/perl/lonnet.pm 2020/10/15 19:17:40 1.1429
@@ -1,7 +1,7 @@
# The LearningOnline Network
# TCP networking package
#
-# $Id: lonnet.pm,v 1.1421 2020/05/13 01:58:16 raeburn Exp $
+# $Id: lonnet.pm,v 1.1429 2020/10/15 19:17:40 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -3383,6 +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)=@_;
@@ -3534,7 +3560,10 @@ sub remove_stale_resfile {
unlink($fname.'.meta');
}
}
- &reply("unsub:$fname",$homeserver);
+ my $unsubresult = &unsubscribe($fname);
+ unless ($unsubresult eq 'ok') {
+ &logthis("no unsub of $fname from $homeserver, reason: $unsubresult");
+ }
$removed = 1;
}
}
@@ -8007,7 +8036,7 @@ sub customaccess {
# ------------------------------------------------- Check for a user privilege
sub allowed {
- my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
+ my ($priv,$uri,$symb,$role,$clientip,$noblockcheck,$ignorecache)=@_;
my $ver_orguri=$uri;
$uri=&deversion($uri);
my $orguri=$uri;
@@ -8238,7 +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) {
$thisallowed = 'B';
} else {
@@ -8261,7 +8290,7 @@ sub allowed {
} elsif ($noblockcheck) {
$thisallowed='F';
} else {
- my @blockers = &has_comm_blocking($priv,$symb,$refuri);
+ my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
if (@blockers > 0) {
$thisallowed = 'B';
} else {
@@ -8334,7 +8363,7 @@ sub allowed {
if ($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 {
@@ -8347,7 +8376,7 @@ sub allowed {
$checkreferer=0;
}
}
-
+
if ($checkreferer) {
my $refuri=$env{'httpref.'.$orguri};
unless ($refuri) {
@@ -8379,7 +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 {
@@ -8465,7 +8494,7 @@ sub allowed {
}
}
}
-
+
#
# Rest of the restrictions depend on selected course
#
@@ -8634,22 +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 {
@@ -8729,14 +8763,23 @@ 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 '') {
- @interval=&EXT("resource.0.interval",$symb);
- if ($interval[1] eq 'map') {
- last;
+ if (ref($mapres)) {
+ my $first = $mapres->map_start();
+ my $finish = $mapres->map_finish();
+ my $it = $navmap->getIterator($first,$finish,undef,0,0);
+ if (ref($it)) {
+ 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') {
+ if ($res->answerable()) {
+ push(@to_test,$res);
+ last;
+ }
+ }
}
}
}
@@ -8787,17 +8830,23 @@ 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);
@@ -8808,34 +8857,38 @@ 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;
}
}
@@ -10578,14 +10631,19 @@ 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)) {
$can_create = 1;
}
@@ -13258,19 +13316,22 @@ sub deversion {
# ------------------------------------------------------ Return symb list entry
sub symbread {
- my ($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'};
}
@@ -13293,10 +13354,18 @@ 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) {
@@ -13329,13 +13398,18 @@ 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($possibles) eq 'HASH')) {
@@ -13354,12 +13428,13 @@ sub symbread {
if ($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++;
}
@@ -13367,6 +13442,11 @@ sub symbread {
$syval = $poss_syval;
$realpossible++;
}
+ if ($syval) {
+ if (ref($possibles) eq 'HASH') {
+ $possibles->{$syval} = 1;
+ }
+ }
}
}
}