--- loncom/lonnet/perl/lonnet.pm 2014/06/25 18:44:10 1.1172.2.52 +++ loncom/lonnet/perl/lonnet.pm 2014/12/07 19:45:30 1.1273 @@ -1,7 +1,7 @@ # The LearningOnline Network # TCP networking package # -# $Id: lonnet.pm,v 1.1172.2.52 2014/06/25 18:44:10 raeburn Exp $ +# $Id: lonnet.pm,v 1.1273 2014/12/07 19:45:30 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -75,6 +75,9 @@ use LWP::UserAgent(); use HTTP::Date; use Image::Magick; + +use Encode; + use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease %managerstab); @@ -109,6 +112,7 @@ require Exporter; our @ISA = qw (Exporter); our @EXPORT = qw(%env); + # ------------------------------------ Logging (parameters, docs, slots, roles) { my $logid; @@ -123,19 +127,19 @@ our @EXPORT = qw(%env); $logid ++; my $now = time(); my $id=$now.'00000'.$$.'00000'.$logid; - my $logentry = { - $id => { - 'exe_uname' => $env{'user.name'}, - 'exe_udom' => $env{'user.domain'}, - 'exe_time' => $now, - 'exe_ip' => $ENV{'REMOTE_ADDR'}, - 'delflag' => $delflag, - 'logentry' => $storehash, - 'uname' => $uname, - 'udom' => $udom, - } + my $logentry = { + $id => { + 'exe_uname' => $env{'user.name'}, + 'exe_udom' => $env{'user.domain'}, + 'exe_time' => $now, + 'exe_ip' => $ENV{'REMOTE_ADDR'}, + 'delflag' => $delflag, + 'logentry' => $storehash, + 'uname' => $uname, + 'udom' => $udom, + } }; - return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum); + return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum); } } @@ -356,7 +360,8 @@ sub remote_devalidate_cache { my $items; return unless (ref($cachekeys) eq 'ARRAY'); my $cachestr = join('&',@{$cachekeys}); - return &reply('devalidatecache:'.&escape($cachestr),$lonhost); + my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost); + return $response; } # -------------------------------------------------- Non-critical communication @@ -974,12 +979,12 @@ sub choose_server { } } foreach my $lonhost (keys(%servers)) { - my $loginvia; if ($skiploadbal) { if (ref($balancers) eq 'HASH') { next if (exists($balancers->{$lonhost})); } - } + } + my $loginvia; if ($checkloginvia) { $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost}; if ($loginvia) { @@ -1297,7 +1302,7 @@ sub check_loadbalancing { } } if (ref($result) eq 'HASH') { - ($is_balancer,$currtargets,$currrules) = + ($is_balancer,$currtargets,$currrules) = &check_balancer_result($result,@hosts); if ($is_balancer) { if (ref($currrules) eq 'HASH') { @@ -1356,7 +1361,7 @@ sub check_loadbalancing { } } if (ref($result) eq 'HASH') { - ($is_balancer,$currtargets,$currrules) = + ($is_balancer,$currtargets,$currrules) = &check_balancer_result($result,@hosts); if ($is_balancer) { if (ref($currrules) eq 'HASH') { @@ -1412,8 +1417,8 @@ sub check_loadbalancing { $is_balancer = 0; if ($uname ne '' && $udom ne '') { if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) { - - &appenv({'user.loadbalexempt' => $lonhost, + + &appenv({'user.loadbalexempt' => $lonhost, 'user.loadbalcheck.time' => time}); } } @@ -1602,7 +1607,7 @@ sub idput { } } -# ---------------------------------------- Delete unwanted IDs from ids.db file +# ---------------------------------------- Delete unwanted IDs from ids.db file sub iddel { my ($udom,$idshashref,$uhome)=@_; @@ -1647,6 +1652,7 @@ sub dump_dom { sub get_dom { my ($namespace,$storearr,$udom,$uhome)=@_; + return if ($udom eq 'public'); my $items=''; foreach my $item (@$storearr) { $items.=&escape($item).'&'; @@ -1654,6 +1660,7 @@ sub get_dom { $items=~s/\&$//; if (!$udom) { $udom=$env{'user.domain'}; + return if ($udom eq 'public'); if (defined(&domain($udom,'primary'))) { $uhome=&domain($udom,'primary'); } else { @@ -2068,6 +2075,7 @@ sub get_domain_defaults { } } if (ref($domconfig{'coursedefaults'}) eq 'HASH') { + $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'}; foreach my $type (@coursetypes) { if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') { unless ($type eq 'community') { @@ -2118,7 +2126,7 @@ sub get_domain_defaults { if (ref($domconfig{'coursecategories'}) eq 'HASH') { $domdefaults{'catauth'} = 'std'; $domdefaults{'catunauth'} = 'std'; - if ($domconfig{'coursecategories'}{'auth'}) { + if ($domconfig{'coursecategories'}{'auth'}) { $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'}; } if ($domconfig{'coursecategories'}{'unauth'}) { @@ -2715,17 +2723,25 @@ sub ssi { &Apache::lonenc::check_encrypt(\$fn); if (%form) { $request=new HTTP::Request('POST',&absolute_url().$fn); - $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form))); + $request->content(join('&',map { + my $name = escape($_); + "$name=" . ( ref($form{$_}) eq 'ARRAY' + ? join("&$name=", map {escape($_) } @{$form{$_}}) + : &escape($form{$_}) ); + } keys(%form))); } else { $request=new HTTP::Request('GET',&absolute_url().$fn); } $request->header(Cookie => $ENV{'HTTP_COOKIE'}); my $response= $ua->request($request); + my $content = $response->content; + + if (wantarray) { - return ($response->content, $response); + return ($content, $response); } else { - return $response->content; + return $content; } } @@ -2757,7 +2773,7 @@ sub allowuploaded { # # Determine if the current user should be able to edit a particular resource, # when viewing in course context. -# (a) When viewing resource used to determine if "Edit" item is included in +# (a) When viewing resource used to determine if "Edit" item is included in # Functions. # (b) When displaying folder contents in course editor, used to determine if # "Edit" link will be displayed alongside resource. @@ -2765,12 +2781,12 @@ sub allowuploaded { # input: six args -- filename (decluttered), course number, course domain, # url, symb (if registered) and group (if this is a group # item -- e.g., bulletin board, group page etc.). -# output: array of five scalars -- +# output: array of five scalars -- # $cfile -- url for file editing if editable on current server # $home -- homeserver of resource (i.e., for author if published, # or course if uploaded.). # $switchserver -- 1 if server switch will be needed. -# $forceedit -- 1 if icon/link should be to go to edit mode +# $forceedit -- 1 if icon/link should be to go to edit mode # $forceview -- 1 if icon/link should be to go to view mode # @@ -2859,7 +2875,7 @@ sub can_edit_resource { $forceedit = 1; } $cfile = $resurl; - } elsif (($resurl ne '') && (&is_on_map($resurl))) { + } elsif (($resurl ne '') && (&is_on_map($resurl))) { if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) { $incourse = 1; if ($env{'form.forceedit'}) { @@ -2890,7 +2906,7 @@ sub can_edit_resource { } } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') { my $template = '/res/lib/templates/simpleproblem.problem'; - if (&is_on_map($template)) { + if (&is_on_map($template)) { $incourse = 1; $forceview = 1; $cfile = $template; @@ -2937,7 +2953,7 @@ sub can_edit_resource { $cfile=$file; } } - if (($cfile ne '') && (!$incourse || $uploaded) && + if (($cfile ne '') && (!$incourse || $uploaded) && (($home ne '') && ($home ne 'no_host'))) { my @ids=¤t_machine_ids(); unless (grep(/^\Q$home\E$/,@ids)) { @@ -2964,9 +2980,9 @@ sub in_course { if ($hideprivileged) { my $skipuser; my %coursehash = &coursedescription($cdom.'_'.$cnum); - my @possdoms = ($cdom); - if ($coursehash{'checkforpriv'}) { - push(@possdoms,split(/,/,$coursehash{'checkforpriv'})); + my @possdoms = ($cdom); + if ($coursehash{'checkforpriv'}) { + push(@possdoms,split(/,/,$coursehash{'checkforpriv'})); } if (&privileged($uname,$udom,\@possdoms)) { $skipuser = 1; @@ -3470,7 +3486,7 @@ sub extract_embedded_items { } if (lc($tagname) eq 'a') { unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) { - &add_filetype($allfiles,$attr->{'href'},'href'); + &add_filetype($allfiles,$attr->{'href'},'href'); } } if (lc($tagname) eq 'script') { @@ -4141,7 +4157,7 @@ sub get_my_roles { } else { my $possdoms = [$domain]; if (ref($roledoms) eq 'ARRAY') { - push(@{$possdoms},@{$roledoms}); + push(@{$possdoms},@{$roledoms}); } if (&privileged($username,$domain,$possdoms,\@privroles)) { if (!$nothide{$username.':'.$domain}) { @@ -4249,16 +4265,16 @@ sub courseiddump { if (($domfilter eq '') || (&host_domain($tryserver) eq $domfilter)) { my $rep; - if (grep { $_ eq $tryserver } ¤t_machine_ids()) { - $rep = &LONCAPA::Lond::dump_course_id_handler( - join(":", (&host_domain($tryserver), $sincefilter, - &escape($descfilter), &escape($instcodefilter), + if (grep { $_ eq $tryserver } current_machine_ids()) { + $rep = LONCAPA::Lond::dump_course_id_handler( + join(":", (&host_domain($tryserver), $sincefilter, + &escape($descfilter), &escape($instcodefilter), &escape($ownerfilter), &escape($coursefilter), - &escape($typefilter), &escape($regexp_ok), - $as_hash, &escape($selfenrollonly), - &escape($catfilter), $showhidden, $caller, - &escape($cloner), &escape($cc_clone), $cloneonly, - &escape($createdbefore), &escape($createdafter), + &escape($typefilter), &escape($regexp_ok), + $as_hash, &escape($selfenrollonly), + &escape($catfilter), $showhidden, $caller, + &escape($cloner), &escape($cc_clone), $cloneonly, + &escape($createdbefore), &escape($createdafter), &escape($creationcontext), $domcloner, $hasuniquecode))); } else { $rep = &reply('courseiddump:'.&host_domain($tryserver).':'. @@ -4273,7 +4289,7 @@ sub courseiddump { &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode, $tryserver); } - + my @pairs=split(/\&/,$rep); foreach my $item (@pairs) { my ($key,$value)=split(/\=/,$item,2); @@ -4472,92 +4488,6 @@ sub set_first_access { return 'already_set'; } } - -sub checkout { - my ($symb,$tuname,$tudom,$tcrsid)=@_; - my $now=time; - my $lonhost=$perlvar{'lonHostID'}; - my $infostr=&escape( - 'CHECKOUTTOKEN&'. - $tuname.'&'. - $tudom.'&'. - $tcrsid.'&'. - $symb.'&'. - $now.'&'.$ENV{'REMOTE_ADDR'}); - my $token=&reply('tmpput:'.$infostr,$lonhost); - if ($token=~/^error\:/) { - &logthis("WARNING: ". - "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb. - ""); - return ''; - } - - $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/; - $token=~tr/a-z/A-Z/; - - my %infohash=('resource.0.outtoken' => $token, - 'resource.0.checkouttime' => $now, - 'resource.0.outremote' => $ENV{'REMOTE_ADDR'}); - - unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') { - return ''; - } else { - &logthis("WARNING: ". - "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb. - ""); - } - - if (&log($tudom,$tuname,&homeserver($tuname,$tudom), - &escape('Checkout '.$infostr.' - '. - $token)) ne 'ok') { - return ''; - } else { - &logthis("WARNING: ". - "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb. - ""); - } - return $token; -} - -# ------------------------------------------------------------ Check in an item - -sub checkin { - my $token=shift; - my $now=time; - my ($ta,$tb,$lonhost)=split(/\*/,$token); - $lonhost=~tr/A-Z/a-z/; - my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb; - $dtoken=~s/\W/\_/g; - my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)= - split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost))); - - unless (($tuname) && ($tudom)) { - &logthis('Check in '.$token.' ('.$dtoken.') failed'); - return ''; - } - - unless (&allowed('mgr',$tcrsid)) { - &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '. - $env{'user.name'}.' - '.$env{'user.domain'}); - return ''; - } - - my %infohash=('resource.0.intoken' => $token, - 'resource.0.checkintime' => $now, - 'resource.0.inremote' => $ENV{'REMOTE_ADDR'}); - - unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') { - return ''; - } - - if (&log($tudom,$tuname,&homeserver($tuname,$tudom), - &escape('Checkin - '.$token)) ne 'ok') { - return ''; - } - - return ($symb,$tuname,$tudom,$tcrsid); -} - # --------------------------------------------- Set Expire Date for Spreadsheet sub expirespread { @@ -4928,7 +4858,7 @@ sub tmprestore { # ----------------------------------------------------------------------- Store sub store { - my ($storehash,$symb,$namespace,$domain,$stuname) = @_; + my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_; my $home=''; if ($stuname) { $home=&homeserver($stuname,$domain); } @@ -4958,13 +4888,13 @@ sub store { } $namevalue=~s/\&$//; &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue); - return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home"); + return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home"); } # -------------------------------------------------------------- Critical Store sub cstore { - my ($storehash,$symb,$namespace,$domain,$stuname) = @_; + my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_; my $home=''; if ($stuname) { $home=&homeserver($stuname,$domain); } @@ -4995,7 +4925,7 @@ sub cstore { $namevalue=~s/\&$//; &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue); return critical - ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home"); + ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home"); } # --------------------------------------------------------------------- Restore @@ -5151,7 +5081,7 @@ sub privileged { my $now = time; my $roles; if (ref($possroles) eq 'ARRAY') { - $roles = $possroles; + $roles = $possroles; } else { $roles = ['dc','su']; } @@ -5178,7 +5108,7 @@ sub privileged { for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) { my ($trole, $tend, $tstart) = split(/_/, $role); if (grep(/^\Q$trole\E$/,@{$roles})) { - return 1 unless ($tend && $tend < $now) + return 1 unless ($tend && $tend < $now) or ($tstart && $tstart > $now); } } @@ -5216,7 +5146,7 @@ sub privileged_by_domain { my ($trole,$uname,$udom,$rest) = split(/:/,$item,4); my ($end,$start) = split(/:/,$dompersonnel{$server}{$item}); next if ($end && $end < $now); - $privileged{$dom}{$trole}{$uname.':'.$udom} = + $privileged{$dom}{$trole}{$uname.':'.$udom} = $dompersonnel{$server}{$item}; } } @@ -5687,14 +5617,15 @@ sub unserialize { return {} if $rep =~ /^error/; my %returnhash=(); - foreach my $item (split(/\&/,$rep)) { - my ($key, $value) = split(/=/, $item, 2); - $key = unescape($key) unless $escapedkeys; - next if $key =~ /^error: 2 /; - $returnhash{$key} = &thaw_unescape($value); - } + foreach my $item (split(/\&/,$rep)) { + my ($key, $value) = split(/=/, $item, 2); + $key = unescape($key) unless $escapedkeys; + next if $key =~ /^error: 2 /; + $returnhash{$key} = &thaw_unescape($value); + } + #return %returnhash; return \%returnhash; -} +} # see Lond::dump_with_regexp # if $escapedkeys hash keys won't get unescaped. @@ -5704,17 +5635,16 @@ sub dump { if (!$uname) { $uname=$env{'user.name'}; } my $uhome=&homeserver($uname,$udomain); - my $reply; - if (grep { $_ eq $uhome } ¤t_machine_ids()) { - # user is hosted on this machine - $reply = LONCAPA::Lond::dump_with_regexp(join(':', ($udomain, - $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'}); - return %{&unserialize($reply, $escapedkeys)}; - } if ($regexp) { - $regexp=&escape($regexp); + $regexp=&escape($regexp); } else { - $regexp='.'; + $regexp='.'; + } + if (grep { $_ eq $uhome } current_machine_ids()) { + # user is hosted on this machine + my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain, + $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'}); + return %{unserialize($reply, $escapedkeys)}; } my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome); my @pairs=split(/\&/,$rep); @@ -5722,7 +5652,8 @@ sub dump { if (!($rep =~ /^error/ )) { foreach my $item (@pairs) { my ($key,$value)=split(/=/,$item,2); - $key = &unescape($key) unless ($escapedkeys); + $key = unescape($key) unless $escapedkeys; + #$key = &unescape($key); next if ($key =~ /^error: 2 /); $returnhash{$key}=&thaw_unescape($value); } @@ -5766,7 +5697,7 @@ sub currentdump { my $rep; if (grep { $_ eq $uhome } current_machine_ids()) { - $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname, + $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname, $courseid))); } else { $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome); @@ -5892,7 +5823,7 @@ sub newput { # --------------------------------------------------------- putstore interface sub putstore { - my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_; + my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_; if (!$udomain) { $udomain=$env{'user.domain'}; } if (!$uname) { $uname=$env{'user.name'}; } my $uhome=&homeserver($uname,$udomain); @@ -5906,6 +5837,17 @@ sub putstore { my $reply = &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items", $uhome); + if (($tolog) && ($reply eq 'ok')) { + my $namevalue=''; + foreach my $key (keys(%{$storehash})) { + $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&'; + } + $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}). + '&host='.&escape($perlvar{'lonHostID'}). + '&version='.$esc_v. + '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'}); + &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue); + } if ($reply eq 'unknown_cmd') { # gfall back to way things use to be done return &old_putstore($namespace,$symb,$version,$storehash,$udomain, @@ -6014,13 +5956,13 @@ sub tmpdel { return &reply("tmpdel:$token",$server); } -# ------------------------------------------------------------ get_timebased_id +# ------------------------------------------------------------ get_timebased_id sub get_timebased_id { my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries, $maxtries) = @_; my ($newid,$error,$dellock); - unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) { + unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) { return ('','ok','invalid call to get suffix'); } @@ -6034,7 +5976,7 @@ sub get_timebased_id { if (!$maxtries) { $maxtries = 10; } - + if (($cdom eq '') || ($cnum eq '')) { if ($env{'request.course.id'}) { $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; @@ -6064,10 +6006,15 @@ sub get_timebased_id { my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix); my $id = time; $newid = $id; + if ($idtype eq 'addcode') { + $newid .= &sixnum_code(); + } my $idtries = 0; while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) { if ($idtype eq 'concat') { $newid = $id.$idtries; + } elsif ($idtype eq 'addcode') { + $newid = $newid.&sixnum_code(); } else { $newid ++; } @@ -6084,6 +6031,7 @@ sub get_timebased_id { $error = 'error saving new item: '.$putresult; } } else { + undef($newid); $error = ('error: no unique suffix available for the new item '); } # remove lock @@ -6096,12 +6044,20 @@ sub get_timebased_id { return ($newid,$dellock,$error); } +sub sixnum_code { + my $code; + for (0..6) { + $code .= int( rand(9) ); + } + return $code; +} + # -------------------------------------------------- portfolio access checking sub portfolio_access { - my ($requrl) = @_; + my ($requrl,$clientip) = @_; my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl); - my $result = &get_portfolio_access($udom,$unum,$file_name,$group); + my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip); if ($result) { my %setters; if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') { @@ -6127,7 +6083,7 @@ sub portfolio_access { } sub get_portfolio_access { - my ($udom,$unum,$file_name,$group,$access_hash) = @_; + my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_; if (!ref($access_hash)) { my $current_perms = &get_portfile_permissions($udom,$unum); @@ -6136,7 +6092,7 @@ sub get_portfolio_access { $access_hash = $access_controls{$file_name}; } - my ($public,$guest,@domains,@users,@courses,@groups); + my ($public,$guest,@domains,@users,@courses,@groups,@ips); my $now = time; if (ref($access_hash) eq 'HASH') { foreach my $key (keys(%{$access_hash})) { @@ -6160,10 +6116,25 @@ sub get_portfolio_access { push(@courses,$key); } elsif ($scope eq 'group') { push(@groups,$key); + } elsif ($scope eq 'ip') { + push(@ips,$key); } } if ($public) { return 'ok'; + } elsif (@ips > 0) { + my $allowed; + foreach my $ipkey (@ips) { + if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') { + if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) { + $allowed = 1; + last; + } + } + } + if ($allowed) { + return 'ok'; + } } if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') { if ($guest) { @@ -6385,7 +6356,7 @@ sub usertools_access { my ($toolstatus,$inststatus,$envkey); if ($context eq 'requestauthor') { - $envkey = $context; + $envkey = $context; } else { $envkey = $context.'.'.$tool; } @@ -6647,7 +6618,7 @@ sub customaccess { # ------------------------------------------------- Check for a user privilege sub allowed { - my ($priv,$uri,$symb,$role)=@_; + my ($priv,$uri,$symb,$role,$clientip)=@_; my $ver_orguri=$uri; $uri=&deversion($uri); my $orguri=$uri; @@ -6874,9 +6845,9 @@ sub allowed { && $thisallowed ne 'F' && $thisallowed ne '2' && &is_portfolio_url($uri)) { - $thisallowed = &portfolio_access($uri); + $thisallowed = &portfolio_access($uri,$clientip); } - + # Full access at system, domain or course-wide level? Exit. if ($thisallowed=~/F/) { return 'F'; @@ -7463,9 +7434,9 @@ sub metadata_query { my @server_list = (defined($server_array) ? @$server_array : keys(%libserv) ); for my $server (@server_list) { - my $domains = ''; + my $domains = ''; if (ref($domains_hash) eq 'HASH') { - $domains = $domains_hash->{$server}; + $domains = $domains_hash->{$server}; } unless ($custom or $customshow) { my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server); @@ -8010,7 +7981,8 @@ sub auto_crsreq_update { ':'.&escape($action).':'.&escape($ownername).':'. &escape($ownerdomain).':'.&escape($fullname).':'. &escape($title).':'.&escape($code).':'. - &escape($accessstart).':'.&escape($accessend).':'.$info,$homeserver); + &escape($accessstart).':'.&escape($accessend).':'.$info, + $homeserver); unless ($response =~ /(con_lost|error|no_such_host|refused)/) { my @items = split(/&/,$response); foreach my $item (@items) { @@ -8290,7 +8262,7 @@ sub assignrole { } } } elsif ($context eq 'requestauthor') { - if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) && + if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) && ($url eq '/'.$udom.'/') && ($role eq 'au')) { if ($env{'environment.requestauthor'} eq 'automatic') { $refused = ''; @@ -8298,13 +8270,13 @@ sub assignrole { my %domdefaults = &get_domain_defaults($udom); if (ref($domdefaults{'requestauthor'}) eq 'HASH') { my $checkbystatus; - if ($env{'user.adv'}) { + if ($env{'user.adv'}) { my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'}; if ($disposition eq 'automatic') { $refused = ''; } elsif ($disposition eq '') { $checkbystatus = 1; - } + } } else { $checkbystatus = 1; } @@ -8391,7 +8363,7 @@ sub assignrole { $context); } elsif (($role eq 'ca') || ($role eq 'aa')) { &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag, - $context); + $context); } if ($role eq 'cc') { &autoupdate_coowners($url,$end,$start,$uname,$udom); @@ -8706,7 +8678,7 @@ sub modifystudent { # student's environment $uid = undef if (!$forceid); $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last, - $gene,$usec,$end,$start,$type,$locktype, + $gene,$usec,$end,$start,$type,$locktype, $cid,$selfenroll,$context,$credits); return $reply; } @@ -9188,6 +9160,90 @@ sub files_not_in_path { return (@return_files); } +#------------------------------Submitted/Handedback Portfolio Files Versioning + +sub portfiles_versioning { + my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_; + my $portfolio_root = '/userfiles/portfolio'; + return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY')); + foreach my $file (@{$portfiles}) { + &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file); + my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/); + my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file); + my $getpropath = 1; + my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain, + $stu_name,$getpropath); + my $version = &get_next_version($answer_name,$answer_ext,$dir_list); + my $new_answer = + &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version); + if ($new_answer ne 'problem getting file') { + push(@{$versioned_portfiles}, $directory.$new_answer); + &mark_as_readonly($domain,$stu_name,[$directory.$new_answer], + [$symb,$env{'request.course.id'},'graded']); + } + } +} + +sub get_next_version { + my ($answer_name, $answer_ext, $dir_list) = @_; + my $version; + if (ref($dir_list) eq 'ARRAY') { + foreach my $row (@{$dir_list}) { + my ($file) = split(/\&/,$row,2); + my ($file_name,$file_version,$file_ext) = + &file_name_version_ext($file); + if (($file_name eq $answer_name) && + ($file_ext eq $answer_ext)) { + # gets here if filename and extension match, + # regardless of version + if ($file_version ne '') { + # a versioned file is found so save it for later + if ($file_version > $version) { + $version = $file_version; + } + } + } + } + } + $version ++; + return($version); +} + +sub version_selected_portfile { + my ($domain,$stu_name,$directory,$file_name,$version) = @_; + my ($answer_name,$answer_ver,$answer_ext) = + &file_name_version_ext($file_name); + my $new_answer; + $env{'form.copy'} = + &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name"); + if($env{'form.copy'} eq '-1') { + $new_answer = 'problem getting file'; + } else { + $new_answer = $answer_name.'.'.$version.'.'.$answer_ext; + my $copy_result = + &finishuserfileupload($stu_name,$domain,'copy', + '/portfolio'.$directory.$new_answer); + } + undef($env{'form.copy'}); + return ($new_answer); +} + +sub file_name_version_ext { + my ($file)=@_; + my @file_parts = split(/\./, $file); + my ($name,$version,$ext); + if (@file_parts > 1) { + $ext=pop(@file_parts); + if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) { + $version=pop(@file_parts); + } + $name=join('.',@file_parts); + } else { + $name=join('.',@file_parts); + } + return($name,$version,$ext); +} + #----------------------------------------------Get portfolio file permissions sub get_portfile_permissions { @@ -9332,49 +9388,132 @@ sub modify_access_controls { } sub make_public_indefinitely { - my ($requrl) = @_; + my (@requrl) = @_; + return &automated_portfile_access('public',\@requrl); +} + +sub automated_portfile_access { + my ($accesstype,$addsref,$delsref,$info) = @_; + unless (($accesstype eq 'public') || ($accesstype eq 'ip')) { + return 'invalid'; + } + my %urls; + if (ref($addsref) eq 'ARRAY') { + foreach my $requrl (@{$addsref}) { + if (&is_portfolio_url($requrl)) { + unless (exists($urls{$requrl})) { + $urls{$requrl} = 'add'; + } + } + } + } + if (ref($delsref) eq 'ARRAY') { + foreach my $requrl (@{$delsref}) { + if (&is_portfolio_url($requrl)) { + unless (exists($urls{$requrl})) { + $urls{$requrl} = 'delete'; + } + } + } + } + unless (keys(%urls)) { + return 'invalid'; + } + my $ip; + if ($accesstype eq 'ip') { + if (ref($info) eq 'HASH') { + if ($info->{'ip'} ne '') { + $ip = $info->{'ip'}; + } + } + if ($ip eq '') { + return 'invalid'; + } + } + my $errors; my $now = time; - my $action = 'activate'; - my $aclnum = 0; - if (&is_portfolio_url($requrl)) { + my %current_perms; + foreach my $requrl (sort(keys(%urls))) { + my $action; + if ($urls{$requrl} eq 'add') { + $action = 'activate'; + } else { + $action = 'none'; + } + my $aclnum = 0; my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl); - my $current_perms = &get_portfile_permissions($udom,$unum); - my %access_controls = &get_access_controls($current_perms, + unless (exists($current_perms{$unum.':'.$udom})) { + $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum); + } + my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom}, $group,$file_name); foreach my $key (keys(%{$access_controls{$file_name}})) { my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/); - if ($scope eq 'public') { - if ($start <= $now && $end == 0) { - $action = 'none'; - } else { + if ($scope eq $accesstype) { + if (($start <= $now) && ($end == 0)) { + if ($accesstype eq 'ip') { + if (ref($access_controls{$file_name}{$key}) eq 'HASH') { + if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') { + if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) { + if ($urls{$requrl} eq 'add') { + $action = 'none'; + last; + } else { + $action = 'delete'; + $aclnum = $num; + last; + } + } + } + } + } elsif ($accesstype eq 'public') { + if ($urls{$requrl} eq 'add') { + $action = 'none'; + last; + } else { + $action = 'delete'; + $aclnum = $num; + last; + } + } + } elsif ($accesstype eq 'public') { $action = 'update'; $aclnum = $num; + last; } - last; } } if ($action eq 'none') { - return 'ok'; + next; } else { my %changes; my $newend = 0; my $newstart = $now; - my $newkey = $aclnum.':public_'.$newend.'_'.$newstart; + my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart; $changes{$action}{$newkey} = { - type => 'public', + type => $accesstype, time => { start => $newstart, end => $newend, }, }; + if ($accesstype eq 'ip') { + $changes{$action}{$newkey}{'ip'} = [$ip]; + } my ($outcome,$deloutcome,$new_values,$translation) = &modify_access_controls($file_name,\%changes,$udom,$unum); - return $outcome; + unless ($outcome eq 'ok') { + $errors .= $outcome.' '; + } } + } + if ($errors) { + $errors =~ s/\s$//; + return $errors; } else { - return 'invalid'; + return 'ok'; } } @@ -9851,7 +9990,7 @@ sub get_numsuppfiles { unless ($chome eq 'no_host') { ($suppcount,my $errors) = (0,0); my $suppmap = 'supplemental.sequence'; - ($suppcount,$errors) = + ($suppcount,$errors) = &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors); } &do_cache_new('suppcount',$hashid,$suppcount,600); @@ -10046,7 +10185,7 @@ sub EXT { $courseid = $cid; } if (($symbparm && $courseid) && - (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) { + (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) { #print '
'.$space.' - '.$qualifier.' - '.$spacequalifierrest; @@ -10834,7 +10973,7 @@ sub symbverify { $ids=$bighash{'ids_'.&clutter($thisurl)}; } unless ($ids) { - my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl; + my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl; $ids=$bighash{$idkey}; } if ($ids) { @@ -10850,14 +10989,14 @@ sub symbverify { if (ref($encstate)) { $$encstate = $bighash{'encrypted_'.$id}; } - if (($env{'request.role.adv'}) || - ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) || + if (($env{'request.role.adv'}) || + ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) || ($thisurl eq '/adm/navmaps')) { - $okay=1; + $okay=1; last; - } - } - } + } + } + } } untie(%bighash); } @@ -10930,18 +11069,14 @@ sub deversion { sub symbread { my ($thisfn,$donotrecurse)=@_; - my $cache_str; - if ($thisfn ne '') { - $cache_str='request.symbread.cached.'.$thisfn; - if ($env{$cache_str} ne '') { - return $env{$cache_str}; - } - } else { + my $cache_str='request.symbread.cached.'.$thisfn; + if (defined($env{$cache_str})) { return $env{$cache_str}; } # no filename provided? try from environment + unless ($thisfn) { if ($env{'request.symb'}) { - return $env{$cache_str}=&symbclean($env{'request.symb'}); - } - $thisfn=$env{'request.filename'}; + return $env{$cache_str}=&symbclean($env{'request.symb'}); + } + $thisfn=$env{'request.filename'}; } if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); } # is that filename actually a symb? Verify, clean, and return @@ -11169,6 +11304,7 @@ sub rndseed { $which =&get_rand_alg($courseid); } if (defined(&getCODE())) { + if ($which eq '64bit5') { return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username); } elsif ($which eq '64bit4') { @@ -11354,7 +11490,7 @@ sub rndseed_CODE_64bit5 { sub setup_random_from_rndseed { my ($rndseed)=@_; if ($rndseed =~/([,:])/) { - my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed)); + my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed)); if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) { &Math::Random::random_set_seed_from_phrase($rndseed); } else { @@ -11887,9 +12023,9 @@ sub get_dns { delete($alldns{$dns}); next if ($response->is_error()); my @content = split("\n",$response->content); - unless ($nocache) { + unless ($nocache) { &do_cache_new('dns',$url,\@content,30*24*60*60); - } + } &$func(\@content,$hashref); return; } @@ -11905,16 +12041,35 @@ sub get_dns { # ------------------------------------------------------Get DNS checksums file sub parse_dns_checksums_tab { my ($lines,$hashref) = @_; - my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'}); + my $lonhost = $perlvar{'lonHostID'}; + my $machine_dom = &Apache::lonnet::host_domain($lonhost); my $loncaparev = &get_server_loncaparev($machine_dom); + my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0]; + my $webconfdir = '/etc/httpd/conf'; + if ($distro =~ /^(ubuntu|debian)(\d+)$/) { + $webconfdir = '/etc/apache2'; + } elsif ($distro =~ /^sles(\d+)$/) { + if ($1 >= 10) { + $webconfdir = '/etc/apache2'; + } + } elsif ($distro =~ /^suse(\d+\.\d+)$/) { + if ($1 >= 10.0) { + $webconfdir = '/etc/apache2'; + } + } my ($release,$timestamp) = split(/\-/,$loncaparev); my (%chksum,%revnum); if (ref($lines) eq 'ARRAY') { chomp(@{$lines}); my $version = shift(@{$lines}); - if ($version eq $release) { + if ($version eq $release) { foreach my $line (@{$lines}) { my ($file,$version,$shasum) = split(/,/,$line); + if ($file =~ m{^/etc/httpd/conf}) { + if ($webconfdir eq '/etc/apache2') { + $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/}; + } + } $chksum{$file} = $shasum; $revnum{$file} = $version; } @@ -12315,9 +12470,9 @@ sub all_loncaparevs { return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11); } -# ------------------------------------------------------- Read loncaparev table +# ---------------------------------------------------------- Read loncaparev table { - sub load_loncaparevs { + sub load_loncaparevs { if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") { if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) { while (my $configline=<$config>) { @@ -12331,7 +12486,7 @@ sub all_loncaparevs { } } -# ----------------------------------------------------- Read serverhostID table +# ---------------------------------------------------------- Read serverhostID table { sub load_serverhomeIDs { if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") { @@ -12423,11 +12578,11 @@ BEGIN { close($config); } -# --------------------------------------------------------- Read loncaparev table +# ---------------------------------------------------------- Read loncaparev table &load_loncaparevs(); -# ------------------------------------------------------- Read serverhostID table +# ---------------------------------------------------------- Read serverhostID table &load_serverhomeIDs(); @@ -12631,7 +12786,7 @@ were new keys. I.E. 1:foo will become 1: Calling convention: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname); - &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname); + &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore); For more detailed information, see lonnet specific documentation. @@ -12825,9 +12980,9 @@ provided for types, will default to retu =item * in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if -user: $uname:$udom has a role in the course: $cdom_$cnum. +user: $uname:$udom has a role in the course: $cdom_$cnum. -Additional optional arguments are: $type (if role checking is to be restricted +Additional optional arguments are: $type (if role checking is to be restricted to certain user status types -- previous (expired roles), active (currently available roles) or future (roles available in the future), and $hideprivileged -- if true will not report course roles for users who @@ -13064,7 +13219,7 @@ values that are the resource value. I b versions are also returned. get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's -supplemental content area. This routine caches the number of files for +supplemental content area. This routine caches the number of files for 10 minutes. =back @@ -13177,9 +13332,9 @@ and is a possible symb for the URL in $t resource that the user accessed using /enc/ returns a 1 on success, 0 on failure, user must be in a course, as it assumes the existence of the course initial hash, and uses $env('request.course.id'}. The third -arg is an optional reference to a scalar. If this arg is passed in the +arg is an optional reference to a scalar. If this arg is passed in the call to symbverify, it will be set to 1 if the symb has been set to be -encrypted; otherwise it will be null. +encrypted; otherwise it will be null. =item * @@ -13232,13 +13387,13 @@ expirespread($uname,$udom,$stype,$usymb) devalidate($symb) : devalidate temporary spreadsheet calculations, forcing spreadsheet to reevaluate the resource scores next time. -=item * +=item * can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource, when viewing in course context. input: six args -- filename (decluttered), course number, course domain, - url, symb (if registered) and group (if this is a + url, symb (if registered) and group (if this is a group item -- e.g., bulletin board, group page etc.). output: array of five scalars -- @@ -13246,15 +13401,15 @@ when viewing in course context. $home -- homeserver of resource (i.e., for author if published, or course if uploaded.). $switchserver -- 1 if server switch will be needed. - $forceedit -- 1 if icon/link should be to go to edit mode + $forceedit -- 1 if icon/link should be to go to edit mode $forceview -- 1 if icon/link should be to go to view mode =item * is_course_upload($file,$cnum,$cdom) -Used in course context to determine if current file was uploaded to -the course (i.e., would be found in /userfiles/docs on the course's +Used in course context to determine if current file was uploaded to +the course (i.e., would be found in /userfiles/docs on the course's homeserver. input: 3 args -- filename (decluttered), course number and course domain. @@ -13268,15 +13423,21 @@ homeserver. =item * -store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently -for this url; hashref needs to be given and should be a \%hashname; the -remaining args aren't required and if they aren't passed or are '' they will -be derived from the env +store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash +permanently for this url; hashref needs to be given and should be a \%hashname; +the remaining args aren't required and if they aren't passed or are '' they will +be derived from the env (with the exception of $laststore, which is an +optional arg used when a user's submission is stored in grading). +$laststore is $version=$timestamp, where $version is the most recent version +number retrieved for the corresponding $symb in the $namespace db file, and +$timestamp is the timestamp for that transaction (UNIX time). +$laststore is currently only passed when cstore() is called by +structuretags::finalize_storage(). =item * -cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but -uses critical subroutine +cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store +but uses critical subroutine =item * @@ -13299,10 +13460,11 @@ $range should be either an integer '100' =item * -putstore($namespace,$symb,$version,$storehash,$udomain,$uname) : +putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) : replaces a &store() version of data with a replacement set of data for a particular resource in a namespace passed in the $storehash hash -reference +reference. If $tolog is true, the transaction is logged in the courselog +with an action=PUTSTORE. =item * @@ -13412,7 +13574,7 @@ server ($udom and $uhome are optional) =item * -get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults +get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults for: authentication, language, quotas, timezone, date locale, and portal URL in the target domain. @@ -13467,7 +13629,8 @@ for course's uploaded content. =over =item -canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota, communityquota, textbookquota +canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota, +communityquota, textbookquota =back @@ -13477,7 +13640,7 @@ on your servers. =over -=item +=item remotesessions, hostedsessions =back @@ -13485,10 +13648,10 @@ remotesessions, hostedsessions =back In cases where a domain coordinator has never used the "Set Domain Configuration" -utility to create a configuration.db file on a domain's primary library server +utility to create a configuration.db file on a domain's primary library server only the following domain defaults: auth_def, auth_arg_def, lang_def -- corresponding values are authentication type (internal, krb4, krb5, -or localauth), initial password or a kerberos realm, language (e.g., en-us) -- +or localauth), initial password or a kerberos realm, language (e.g., en-us) -- will be available. Values are retrieved from cache (if current), unless the optional $ignore_cache arg is true, or from domain's configuration.db (if available), or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab. @@ -13916,8 +14079,8 @@ Returns: get_timebased_id(): -Attempts to get a unique timestamp-based suffix for use with items added to a -course via the Course Editor (e.g., folders, composite pages, +Attempts to get a unique timestamp-based suffix for use with items added to a +course via the Course Editor (e.g., folders, composite pages, group bulletin boards). Args: (first three required; six others optional) @@ -13928,24 +14091,24 @@ Args: (first three required; six others 2. keyid (alphanumeric): name of temporary locking key in hash, e.g., num, boardids -3. namespace: name of gdbm file used to store suffixes already assigned; +3. namespace: name of gdbm file used to store suffixes already assigned; file will be named nohist_namespace.db 4. cdom: domain of course; default is current course domain from %env 5. cnum: course number; default is current course number from %env -6. idtype: set to concat if an additional digit is to be appended to the +6. idtype: set to concat if an additional digit is to be appended to the unix timestamp to form the suffix, if the plain timestamp is already - in use. Default is to not do this, but simply increment the unix + in use. Default is to not do this, but simply increment the unix timestamp by 1 until a unique key is obtained. 7. who: holder of locking key; defaults to user:domain for user. -8. locktries: number of attempts to obtain a lock (sleep of 1s before +8. locktries: number of attempts to obtain a lock (sleep of 1s before retrying); default is 3. -9. maxtries: number of attempts to obtain a unique suffix; default is 20. +9. maxtries: number of attempts to obtain a unique suffix; default is 20. Returns: