--- loncom/lond 2018/12/11 13:05:40 1.555 +++ loncom/lond 2023/05/22 21:10:56 1.577 @@ -2,7 +2,7 @@ # The LearningOnline Network # lond "LON Daemon" Server (port "LOND" 5663) # -# $Id: lond,v 1.555 2018/12/11 13:05:40 raeburn Exp $ +# $Id: lond,v 1.577 2023/05/22 21:10:56 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -65,7 +65,7 @@ my $DEBUG = 0; # Non zero to ena my $status=''; my $lastlog=''; -my $VERSION='$Revision: 1.555 $'; #' stupid emacs +my $VERSION='$Revision: 1.577 $'; #' stupid emacs my $remoteVERSION; my $currenthostid="default"; my $currentdomainid; @@ -80,11 +80,12 @@ my $clientsamedom; # LonCAP # and client. my $clientsameinst; # LonCAPA "internet domain" same for # this host and client. -my $clientremoteok; # Client allowed to host domain's users. - # (version constraints ignored), not set - # if this host and client share "internet domain". -my %clientprohibited; # Actions prohibited on client; - +my $clientremoteok; # Current domain permits hosting on client + # (not set if host and client share "internet domain"). + # Values are 0 or 1; 1 if allowed. +my %clientprohibited; # Commands from client prohibited for domain's + # users. + my $server; my $keymode; @@ -212,6 +213,8 @@ my %trust = ( autovalidateclass_sec => {catalog => 1}, autovalidatecourse => {remote => 1, enroll => 1}, autovalidateinstcode => {domroles => 1, remote => 1, enroll => 1}, + autovalidateinstcrosslist => {remote => 1, enroll => 1}, + autoinstsecreformat => {remote => 1, enroll => 1}, changeuserauth => {remote => 1, domroles => 1}, chatretr => {remote => 1, enroll => 1}, chatsend => {remote => 1, enroll => 1}, @@ -219,6 +222,7 @@ my %trust = ( courseidput => {remote => 1, domroles => 1, enroll => 1}, courseidputhash => {remote => 1, domroles => 1, enroll => 1}, courselastaccess => {remote => 1, domroles => 1, enroll => 1}, + coursesessions => {institutiononly => 1}, currentauth => {remote => 1, domroles => 1, enroll => 1}, currentdump => {remote => 1, enroll => 1}, currentversion => {remote=> 1, content => 1}, @@ -226,6 +230,7 @@ my %trust = ( dcmailput => {remote => 1, domroles => 1}, del => {remote => 1, domroles => 1, enroll => 1, content => 1}, delbalcookie => {institutiononly => 1}, + delusersession => {institutiononly => 1}, deldom => {remote => 1, domroles => 1}, # not currently used devalidatecache => {institutiononly => 1}, domroleput => {remote => 1, enroll => 1}, @@ -234,6 +239,7 @@ my %trust = ( du2 => {remote => 1, enroll => 1}, dump => {remote => 1, enroll => 1, domroles => 1}, edit => {institutiononly => 1}, #not used currently + edump => {remote => 1, enroll => 1, domroles => 1}, eget => {remote => 1, domroles => 1, enroll => 1}, #not used currently egetdom => {remote => 1, domroles => 1, enroll => 1, }, ekey => {anywhere => 1}, @@ -253,6 +259,7 @@ my %trust = ( instidrules => {remote => 1, domroles => 1,}, instrulecheck => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1}, instselfcreatecheck => {institutiononly => 1}, + instunamemapcheck => {remote => 1,}, instuserrules => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1}, keys => {remote => 1,}, load => {anywhere => 1}, @@ -260,6 +267,7 @@ my %trust = ( ls => {remote => 1, enroll => 1, content => 1,}, ls2 => {remote => 1, enroll => 1, content => 1,}, ls3 => {remote => 1, enroll => 1, content => 1,}, + lti => {institutiononly => 1}, makeuser => {remote => 1, enroll => 1, domroles => 1,}, mkdiruserfile => {remote => 1, enroll => 1,}, newput => {remote => 1, enroll => 1, reqcrs => 1, domroles => 1,}, @@ -298,6 +306,7 @@ my %trust = ( servertimezone => {remote => 1, enroll => 1}, setannounce => {remote => 1, domroles => 1}, sethost => {anywhere => 1}, + signlti => {remote => 1}, store => {remote => 1, enroll => 1, reqcrs => 1,}, studentphoto => {remote => 1, enroll => 1}, sub => {content => 1,}, @@ -305,8 +314,10 @@ my %trust = ( tmpget => {institutiononly => 1}, tmpput => {remote => 1, othcoau => 1}, tokenauthuserfile => {anywhere => 1}, + unamemaprules => {remote => 1,}, unsub => {content => 1,}, update => {shared => 1}, + updatebalcookie => {institutiononly => 1}, updateclickers => {remote => 1}, userhassession => {anywhere => 1}, userload => {anywhere => 1}, @@ -855,7 +866,7 @@ sub PushFile { if($filename eq "host") { $contents = AdjustHostContents($contents); - } elsif (($filename eq 'dns_host') || ($filename eq 'dns_domain') || + } elsif (($filename eq 'dns_hosts') || ($filename eq 'dns_domain') || ($filename eq 'loncapaCAcrl')) { if ($contents eq '') { &logthis(' Pushfile: unable to install ' @@ -2029,7 +2040,7 @@ sub read_lonnet_global { } if ($what eq 'perlvar') { if (!exists($packagevars{$what}{'lonBalancer'})) { - if ($dist =~ /^(centos|rhes|fedora|scientific)/) { + if ($dist =~ /^(centos|rhes|fedora|scientific|oracle|rocky|alma)/) { my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf'); if (ref($othervarref) eq 'HASH') { $items->{'lonBalancer'} = $othervarref->{'lonBalancer'}; @@ -2347,12 +2358,84 @@ sub change_password_handler { } if($validated) { my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd. - my ($howpwd,$contentpwd)=split(/:/,$realpasswd); + my $notunique; if ($howpwd eq 'internal') { &Debug("internal auth"); my $ncpass = &hash_passwd($udom,$npass); - if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) { + my (undef,$method,@rest) = split(/!/,$contentpwd); + if ($method eq 'bcrypt') { + my %passwdconf = &Apache::lonnet::get_passwdconf($udom); + if (($passwdconf{'numsaved'}) && ($passwdconf{'numsaved'} =~ /^\d+$/)) { + my @oldpasswds; + my $userpath = &propath($udom,$uname); + my $fullpath = $userpath.'/oldpasswds'; + if (-d $userpath) { + my @oldfiles; + if (-e $fullpath) { + if (opendir(my $dir,$fullpath)) { + (@oldfiles) = grep(/^\d+$/,readdir($dir)); + closedir($dir); + } + if (@oldfiles) { + @oldfiles = sort { $b <=> $a } (@oldfiles); + my $numremoved = 0; + for (my $i=0; $i<@oldfiles; $i++) { + if ($i>=$passwdconf{'numsaved'}) { + if (-f "$fullpath/$oldfiles[$i]") { + if (unlink("$fullpath/$oldfiles[$i]")) { + $numremoved ++; + } + } + } elsif (open(my $fh,'<',"$fullpath/$oldfiles[$i]")) { + while (my $line = <$fh>) { + push(@oldpasswds,$line); + } + close($fh); + } + } + if ($numremoved) { + &logthis("unlinked $numremoved old password files for $uname:$udom"); + } + } + } + push(@oldpasswds,$contentpwd); + foreach my $item (@oldpasswds) { + my (undef,$method,@rest) = split(/!/,$item); + if ($method eq 'bcrypt') { + my $result = &hash_passwd($udom,$npass,@rest); + if ($result eq $item) { + $notunique = 1; + last; + } + } + } + unless ($notunique) { + unless (-e $fullpath) { + if (&mkpath("$fullpath/")) { + chmod(0700,$fullpath); + } + } + if (-d $fullpath) { + my $now = time; + if (open(my $fh,'>',"$fullpath/$now")) { + print $fh $contentpwd; + close($fh); + chmod(0400,"$fullpath/$now"); + } + } + } + } + } + } + if ($notunique) { + my $msg="Result of password change for $uname:$udom - password matches one used before"; + if ($lonhost) { + $msg .= " - request originated from: $lonhost"; + } + &logthis($msg); + &Reply($client, "prioruse\n", $userinput); + } elsif (&rewrite_password_file($udom, $uname, "internal:$ncpass")) { my $msg="Result of password change for $uname: pwchange_success"; if ($lonhost) { $msg .= " - request originated from: $lonhost"; @@ -2369,7 +2452,7 @@ sub change_password_handler { my $result = &change_unix_password($uname, $npass); if ($result eq 'ok') { &update_passwd_history($uname,$udom,$howpwd,$context); - } + } &logthis("Result of password change for $uname: ". $result); &Reply($client, \$result, $userinput); @@ -2380,7 +2463,6 @@ sub change_password_handler { # &Failure( $client, "auth_mode_error\n", $userinput); } - } else { if ($failure eq '') { $failure = 'non_authorized'; @@ -2576,6 +2658,36 @@ sub update_passwd_history { return; } +sub inst_unamemap_check { + my ($cmd, $tail, $client) = @_; + my $userinput = "$cmd:$tail"; + my %rulecheck; + my $outcome; + my ($udom,$uname,@rules) = split(/:/,$tail); + $udom = &unescape($udom); + $uname = &unescape($uname); + @rules = map {&unescape($_);} (@rules); + eval { + local($SIG{__DIE__})='DEFAULT'; + $outcome = &localenroll::unamemap_check($udom,$uname,\@rules,\%rulecheck); + }; + if (!$@) { + if ($outcome eq 'ok') { + my $result=''; + foreach my $key (keys(%rulecheck)) { + $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&'; + } + &Reply($client,\$result,$userinput); + } else { + &Reply($client,"error\n", $userinput); + } + } else { + &Failure($client,"unknown_cmd\n",$userinput); + } +} +®ister_handler("instunamemapcheck",\&inst_unamemap_check,0,1,0); + + # # Determines if this is the home server for a user. The home server # for a user will have his/her lon-capa passwd file. Therefore all we need @@ -2961,6 +3073,54 @@ sub user_has_session_handler { } ®ister_handler("userhassession", \&user_has_session_handler, 0,1,0); +sub del_usersession_handler { + my ($cmd, $tail, $client) = @_; + + my $result; + my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail)); + if (($udom =~ /^$LONCAPA::match_domain$/) && ($uname =~ /^$LONCAPA::match_username$/)) { + my $lonidsdir = $perlvar{'lonIDsDir'}; + if (-d $lonidsdir) { + if (opendir(DIR,$lonidsdir)) { + my $filename; + while ($filename=readdir(DIR)) { + if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/) { + if (tie(my %oldenv,'GDBM_File',"$lonidsdir/$filename", + &GDBM_READER(),0640)) { + my $linkedfile; + if (exists($oldenv{'user.linkedenv'})) { + $linkedfile = $oldenv{'user.linkedenv'}; + } + untie(%oldenv); + $result = unlink("$lonidsdir/$filename"); + if ($result) { + if ($linkedfile =~ /^[a-f0-9]+_linked$/) { + if (-l "$lonidsdir/$linkedfile.id") { + unlink("$lonidsdir/$linkedfile.id"); + } + } + } + } else { + $result = unlink("$lonidsdir/$filename"); + } + last; + } + } + } + } + if ($result == 1) { + &Reply($client, "$result\n", "$cmd:$tail"); + } else { + &Reply($client, "not_found\n", "$cmd:$tail"); + } + } else { + &Failure($client, "invalid_user\n", "$cmd:$tail"); + } + return 1; +} + +®ister_handler("delusersession", \&del_usersession_handler, 0,1,0); + # # Authenticate access to a user file by checking that the token the user's # passed also exists in their session file @@ -3704,6 +3864,47 @@ sub dump_with_regexp { } ®ister_handler("dump", \&dump_with_regexp, 0, 1, 0); +# +# Process the encrypted dump request. Original call should +# be from lonnet::dump() with seventh arg ($encrypt) set to +# 1, to ensure that both request and response are encrypted. +# +# Parameters: +# $cmd - Command keyword of request (edump). +# $tail - Tail of the command. +# See &dump_with_regexp for more +# information about this. +# $client - File open on the client. +# Returns: +# 1 - Continue processing +# 0 - server should exit. +# + +sub encrypted_dump_with_regexp { + my ($cmd, $tail, $client) = @_; + my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion); + + if ($res =~ /^error:/) { + Failure($client, \$res, "$cmd:$tail"); + } else { + if ($cipher) { + my $cmdlength=length($res); + $res.=" "; + my $encres=''; + for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { + $encres.= unpack("H16", + $cipher->encrypt(substr($res, + $encidx, + 8))); + } + &Reply( $client,"enc:$cmdlength:$encres\n","$cmd:$tail"); + } else { + &Failure( $client, "error:no_key\n","$cmd:$tail"); + } + } +} +®ister_handler("edump", \&encrypted_dump_with_regexp, 0, 1, 0); + # Store a set of key=value pairs associated with a versioned name. # # Parameters: @@ -4752,6 +4953,44 @@ sub course_lastaccess_handler { } ®ister_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0); +sub course_sessions_handler { + my ($cmd, $tail, $client) = @_; + my $userinput = "$cmd:$tail"; + my ($cdom,$cnum,$lastactivity) = split(':',$tail); + my $dbsuffix = '_'.$cdom.'_'.$cnum.'.db'; + my (%sessions,$qresult); + my $now=time; + if (opendir(DIR,$perlvar{'lonIDsDir'})) { + my $filename; + while ($filename=readdir(DIR)) { + next if ($filename=~/^\./); + next if ($filename=~/^publicuser_/); + next if ($filename=~/^[a-f0-9]+_(linked|lti_\d+)\.id$/); + if ($filename =~ /^($LONCAPA::match_username)_\d+_($LONCAPA::match_domain)_/) { + my ($uname,$udom) = ($1,$2); + next unless (-e "$perlvar{'lonDaemons'}/tmp/$uname$dbsuffix"); + my $mtime = (stat("$perlvar{'lonIDsDir'}/$filename"))[9]; + if ($lastactivity < 0) { + next if ($mtime-$now > $lastactivity); + } else { + next if ($now-$mtime > $lastactivity); + } + $sessions{$uname.':'.$udom} = $mtime; + } + } + closedir(DIR); + } + foreach my $user (keys(%sessions)) { + $qresult.=&escape($user).'='.$sessions{$user}.'&'; + } + if ($qresult) { + chop($qresult); + } + &Reply($client, \$qresult, $userinput); + return 1; +} +®ister_handler("coursesessions",\&course_sessions_handler, 0, 1, 0); + # # Puts an unencrypted entry in a namespace db file at the domain level # @@ -4916,7 +5155,7 @@ sub del_domain_handler { # domain directory. # # Parameters: -# $cmd - Command request keyword (get). +# $cmd - Command request keyword (getdom). # $tail - Tail of the command. This is a colon separated list # consisting of the domain and the 'namespace' # which selects the gdbm file to do the lookup in, @@ -4933,31 +5172,17 @@ sub del_domain_handler { sub get_domain_handler { my ($cmd, $tail, $client) = @_; - my $userinput = "$cmd:$tail"; my ($udom,$namespace,$what)=split(/:/,$tail,3); - chomp($what); - if ($namespace =~ /^enc/) { + if (($namespace =~ /^enc/) || ($namespace eq 'private')) { &Failure( $client, "refused\n", $userinput); } else { - my @queries=split(/\&/,$what); - my $qresult=''; - my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER()); - if ($hashref) { - for (my $i=0;$i<=$#queries;$i++) { - $qresult.="$hashref->{$queries[$i]}&"; - } - if (&untie_domain_hash($hashref)) { - $qresult=~s/\&$//; - &Reply($client, \$qresult, $userinput); - } else { - &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". - "while attempting getdom\n",$userinput); - } + my $res = LONCAPA::Lond::get_dom($userinput); + if ($res =~ /^error:/) { + &Failure($client, \$res, $userinput); } else { - &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". - "while attempting getdom\n",$userinput); + &Reply($client, \$res, $userinput); } } @@ -4965,47 +5190,192 @@ sub get_domain_handler { } ®ister_handler("getdom", \&get_domain_handler, 0, 1, 0); +# +# Encrypted get from the namespace database file at the domain level. +# This function retrieves a keyed item from a specific named database in the +# domain directory. +# +# Parameters: +# $cmd - Command request keyword (egetdom). +# $tail - Tail of the command. This is a colon separated list +# consisting of the domain and the 'namespace' +# which selects the gdbm file to do the lookup in, +# & separated list of keys to lookup. Note that +# the values are returned as an & separated list too. +# $client - File descriptor open on the client. +# Returns: +# 1 - Continue processing. +# 0 - Exit. +# Side effects: +# reply is encrypted before being written to $client. +# sub encrypted_get_domain_handler { my ($cmd, $tail, $client) = @_; my $userinput = "$cmd:$tail"; - my ($udom,$namespace,$what)=split(/:/,$tail,3); - chomp($what); - my @queries=split(/\&/,$what); - my $qresult=''; - my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER()); - if ($hashref) { - for (my $i=0;$i<=$#queries;$i++) { - $qresult.="$hashref->{$queries[$i]}&"; - } - if (&untie_domain_hash($hashref)) { - $qresult=~s/\&$//; + my ($udom,$namespace,$what) = split(/:/,$tail,3); + if ($namespace eq 'private') { + &Failure( $client, "refused\n", $userinput); + } else { + my $res = LONCAPA::Lond::get_dom($userinput); + if ($res =~ /^error:/) { + &Failure($client, \$res, $userinput); + } else { if ($cipher) { - my $cmdlength=length($qresult); - $qresult.=" "; - my $encqresult=''; + my $cmdlength=length($res); + $res.=" "; + my $encres=''; for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { - $encqresult.= unpack("H16", - $cipher->encrypt(substr($qresult, - $encidx, - 8))); + $encres.= unpack("H16", + $cipher->encrypt(substr($res, + $encidx, + 8))); } - &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput); + &Reply( $client,"enc:$cmdlength:$encres\n",$userinput); } else { - &Failure( $client, "error:no_key\n", $userinput); + &Failure( $client, "error:no_key\n",$userinput); } + } + } + return 1; +} +®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0); + +# +# Encrypted get from the namespace database file at the domain level. +# This function retrieves a keyed item from a specific named database in the +# domain directory. +# +# Parameters: +# $cmd - Command request keyword (lti). +# $tail - Tail of the command. This is a colon-separated list +# consisting of the domain, coursenum, if for LTI- +# enabled deep-linking to course content using +# link protection configured within a course, +# context (=deeplink) if for LTI-enabled deep-linking +# to course content using LTI Provider settings +# configured within a course's domain, the (escaped) +# launch URL, the (escaped) method (typically POST), +# and a frozen hash of the LTI launch parameters +# from the LTI payload. +# $client - File descriptor open on the client. +# Returns: +# 1 - Continue processing. +# 0 - Exit. +# Side effects: +# The reply will contain an LTI itemID, if the signed LTI payload +# could be verified using the consumer key and the shared secret +# available for that key (for the itemID) for either the course or domain, +# depending on values for cnum and context. The reply is encrypted before +# being written to $client. +# +sub lti_handler { + my ($cmd, $tail, $client) = @_; + + my $userinput = "$cmd:$tail"; + + my ($cdom,$cnum,$context,$escurl,$escmethod,$items) = split(/:/,$tail); + my $url = &unescape($escurl); + my $method = &unescape($escmethod); + my $params = &Apache::lonnet::thaw_unescape($items); + my $res; + if ($cnum ne '') { + $res = &LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'}); + } else { + $res = &LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'}); + } + if ($res =~ /^error:/) { + &Failure($client, \$res, $userinput); + } else { + if ($cipher) { + my $cmdlength=length($res); + $res.=" "; + my $encres=''; + for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { + $encres.= unpack("H16", + $cipher->encrypt(substr($res, + $encidx, + 8))); + } + &Reply( $client,"enc:$cmdlength:$encres\n",$userinput); } else { - &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". - "while attempting egetdom\n",$userinput); + &Failure( $client, "error:no_key\n",$userinput); } + } + return 1; +} +®ister_handler("lti", \<i_handler, 1, 1, 0); + +# +# LTI data for launch payload (received encrypted) are unencrypted and +# then signed with the appropriate key and secret, before re-encrypting +# for sending as the signed payload to the client (caller lonnet::sign_lti()). +# +# Parameters: +# $cmd - Command request keyword (signlti). +# $tail - Tail of the command. This is a colon-separated list +# consisting of the domain, coursenum (if for an External +# Tool defined in a course), crstool (true if defined in +# a course), escaped launch URL, numeric ID of external tool +# version number for encryption key (if tool's LTI secret was +# encrypted before storing), post (true if signed data are +# to be returned from Net::OAuth, as a post_body), +# a frozen hash of LTI launch parameters, and a frozen hash +# of LTI config data (i.e., method => signature method). +# $client - File descriptor open on the client. +# Returns: +# 1 - Continue processing. +# 0 - Exit. +# Side effects: +# The reply will contain the LTI payload, as & separated key=value pairs, +# where value is itself a frozen hash, if the required key and secret +# for the apecific tool ID are available. The payload data are retrived from +# a call to Lond::sign_params(), and the reply is encrypted before being +# written to $client. +# +sub sign_lti_handler { + my ($cmd, $tail, $client) = @_; + + my $userinput = "$cmd:$tail"; + + my ($cdom,$cnum,$crstool,$escurl,$idx,$keynum,$post,$paramsref,$inforef) = split(/:/,$tail); + my $url = &unescape($escurl); + my $params = &Apache::lonnet::thaw_unescape($paramsref); + my $info = &Apache::lonnet::thaw_unescape($inforef); + my $res = + &LONCAPA::Lond::sign_params($cdom,$cnum,$crstool,$url,$idx,$keynum, + $post,$perlvar{'lonVersion'},$params,$info); + my $result; + if (ref($res) eq 'HASH') { + foreach my $key (keys(%{$res})) { + $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($res->{$key}).'&'; + } + $result =~ s/\&$//; } else { - &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". - "while attempting egetdom\n",$userinput); + $result = $res; + } + if ($result =~ /^error:/) { + &Failure($client, \$result, $userinput); + } else { + if ($cipher) { + my $cmdlength=length($result); + $result.=" "; + my $encres=''; + for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { + $encres.= unpack("H16", + $cipher->encrypt(substr($result, + $encidx, + 8))); + } + &Reply( $client,"enc:$cmdlength:$encres\n",$userinput); + } else { + &Failure( $client, "error:no_key\n",$userinput); + } } return 1; } -®ister_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0); +®ister_handler("signlti", \&sign_lti_handler, 1, 1, 0); # # Puts an id to a domains id database. @@ -5432,15 +5802,23 @@ sub tmp_put_handler { } my ($id,$store); $tmpsnum++; - if (($context eq 'resetpw') || ($context eq 'createaccount')) { - $id = &md5_hex(&md5_hex(time.{}.rand().$$)); + my $numtries = 0; + my $execdir=$perlvar{'lonDaemons'}; + if (($context eq 'resetpw') || ($context eq 'createaccount') || + ($context eq 'sso') || ($context eq 'link') || ($context eq 'retry')) { + $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum)); + while ((-e "$execdir/tmp/$id.tmp") && ($numtries <10)) { + undef($id); + $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum)); + $numtries ++; + } } else { $id = $$.'_'.$clientip.'_'.$tmpsnum; } $id=~s/\W/\_/g; $record=~s/\n//g; - my $execdir=$perlvar{'lonDaemons'}; - if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) { + if (($id ne '') && + ($store=IO::File->new(">$execdir/tmp/$id.tmp"))) { print $store $record; close $store; &Reply($client, \$id, $userinput); @@ -5523,8 +5901,65 @@ sub tmp_del_handler { ®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0); # +# Process the updatebalcookie command. This command updates a +# cookie in the lonBalancedir directory on a load balancer node. +# +# Parameters: +# $cmd - Command that got us here. +# $tail - Tail of the request (escaped cookie: escaped current entry) +# +# $client - socket open on the client process. +# +# Returns: +# 1 - Indicating processing should continue. +# Side Effects: +# A cookie file is updated from the lonBalancedir directory +# A reply is sent to the client. +# +sub update_balcookie_handler { + my ($cmd, $tail, $client) = @_; + + my $userinput= "$cmd:$tail"; + chomp($tail); + my ($cookie,$lastentry) = map { &unescape($_) } (split(/:/,$tail)); + + my $updatedone; + if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) { + my $execdir=$perlvar{'lonBalanceDir'}; + if (-e "$execdir/$cookie.id") { + my $doupdate; + if (open(my $fh,'<',"$execdir/$cookie.id")) { + while (my $line = <$fh>) { + chomp($line); + if ($line eq $lastentry) { + $doupdate = 1; + last; + } + } + close($fh); + } + if ($doupdate) { + if (open(my $fh,'>',"$execdir/$cookie.id")) { + print $fh $clientname; + close($fh); + $updatedone = 1; + } + } + } + } + if ($updatedone) { + &Reply($client, "ok\n", $userinput); + } else { + &Failure( $client, "error: ".($!+0)."file update failed ". + "while attempting updatebalcookie\n", $userinput); + } + return 1; +} +®ister_handler("updatebalcookie", \&update_balcookie_handler, 0, 1, 0); + +# # Process the delbalcookie command. This command deletes a balancer -# cookie in the lonBalancedir directory created by switchserver +# cookie in the lonBalancedir directory on a load balancer node. # # Parameters: # $cmd - Command that got us here. @@ -5542,6 +5977,7 @@ sub del_balcookie_handler { my $userinput= "$cmd:$cookie"; chomp($cookie); + $cookie = &unescape($cookie); my $deleted = ''; if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) { my $execdir=$perlvar{'lonBalanceDir'}; @@ -5757,6 +6193,39 @@ sub validate_instcode_handler { } ®ister_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0); +# +# Validate co-owner for cross-listed institutional code and +# institutional course code itself used for a LON-CAPA course. +# +# Formal Parameters: +# $cmd - The command request that got us dispatched. +# $tail - The tail of the command. In this case, +# this is a colon separated string containing: +# $dom - Course's LON-CAPA domain +# $instcode - Institutional course code for the course +# $inst_xlist - Institutional course Id for the crosslisting +# $coowner - Username of co-owner +# (values for all but $dom have been escaped). +# +# $client - Socket open on the client. +# Returns: +# 1 - Indicating processing should continue. +# +sub validate_instcrosslist_handler { + my ($cmd, $tail, $client) = @_; + my $userinput = "$cmd:$tail"; + my ($dom,$instcode,$inst_xlist,$coowner) = split(/:/,$tail); + $instcode = &unescape($instcode); + $inst_xlist = &unescape($inst_xlist); + $coowner = &unescape($coowner); + my $outcome = &localenroll::validate_crosslist_access($dom,$instcode, + $inst_xlist,$coowner); + &Reply($client, \$outcome, $userinput); + + return 1; +} +®ister_handler("autovalidateinstcrosslist", \&validate_instcrosslist_handler, 0, 1, 0); + # Get the official sections for which auto-enrollment is possible. # Since the admin people won't know about 'unofficial sections' # we cannot auto-enroll on them. @@ -5881,6 +6350,62 @@ sub validate_class_access_handler { ®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0); # +# Modify institutional sections (using customized &instsec_reformat() +# routine in localenroll.pm), to either clutter or declutter, for +# purposes of ensuring an institutional course section (string) can +# be unambiguously separated into institutional course and section. +# +# Formal Parameters: +# $cmd - The command request that got us dispatched. +# $tail - The tail of the command. In this case this is a colon separated +# set of values that will be split into: +# $cdom - The LON-CAPA domain of the course. +# $action - Either: clutter or declutter +# clutter adds character(s) to eliminate ambiguity +# declutter removes the added characters (e.g., for +# display of the institutional course section string. +# $info - A frozen hash in which keys are: +# LON-CAPA course number:Institutional course code +# and values are a reference to an array of the +# items to modify -- either institutional sections, +# or institutional course sections (for crosslistings). +# $client - The socket open on the client. +# Returns: +# 1 - continue processing. +# + +sub instsec_reformat_handler { + my ($cmd, $tail, $client) = @_; + my $userinput = "$cmd:$tail"; + my ($cdom,$action,$info) = split(/:/,$tail); + my $instsecref = &Apache::lonnet::thaw_unescape($info); + my ($outcome,$result); + eval { + local($SIG{__DIE__})='DEFAULT'; + $outcome=&localenroll::instsec_reformat($cdom,$action,$instsecref); + if ($outcome eq 'ok') { + if (ref($instsecref) eq 'HASH') { + foreach my $key (keys(%{$instsecref})) { + $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($instsecref->{$key}).'&'; + } + $result =~ s/\&$//; + } + } + }; + if (!$@) { + if ($outcome eq 'ok') { + &Reply( $client, \$result, $userinput); + } else { + &Reply($client,\$outcome, $userinput); + } + } else { + &Failure($client,"unknown_cmd\n",$userinput); + } + return 1; +} +®ister_handler("autoinstsecreformat",\&instsec_reformat_handler, 0, 1, 0); + +# # Validate course owner or co-owners(s) access to enrollment data for all sections # and crosslistings for a particular course. # @@ -6384,6 +6909,39 @@ sub get_institutional_selfcreate_rules { } ®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0); +sub get_unamemap_rules { + my ($cmd, $tail, $client) = @_; + my $userinput = "$cmd:$tail"; + my $dom = &unescape($tail); + my (%rules_hash,@rules_order); + my $outcome; + eval { + local($SIG{__DIE__})='DEFAULT'; + $outcome = &localenroll::unamemap_rules($dom,\%rules_hash,\@rules_order); + }; + if (!$@) { + if ($outcome eq 'ok') { + my $result; + foreach my $key (keys(%rules_hash)) { + $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&'; + } + $result =~ s/\&$//; + $result .= ':'; + if (@rules_order > 0) { + foreach my $item (@rules_order) { + $result .= &escape($item).'&'; + } + } + $result =~ s/\&$//; + &Reply($client,\$result,$userinput); + } else { + &Reply($client,"error\n", $userinput); + } + } else { + &Failure($client,"unknown_cmd\n",$userinput); + } +} +®ister_handler("unamemaprules",\&get_unamemap_rules,0,1,0); sub institutional_username_check { my ($cmd, $tail, $client) = @_; @@ -7470,7 +8028,7 @@ sub make_new_child { &Authen::Krb5::init_context(); my $no_ets; - if ($dist =~ /^(?:centos|rhes|scientific)(\d+)$/) { + if ($dist =~ /^(?:centos|rhes|scientific|oracle|rocky|alma)(\d+)/) { if ($1 >= 7) { $no_ets = 1; } @@ -7515,7 +8073,7 @@ sub make_new_child { $ConnectionType = "manager"; $clientname = $managers{$outsideip}; } - my ($clientok,$clientinfoset); + my $clientok; if ($clientrec || $ismanager) { &status("Waiting for init from $clientip $clientname"); @@ -7616,7 +8174,6 @@ sub make_new_child { } } else { - $clientinfoset = &set_client_info(); my $ok = InsecureConnection($client); if($ok) { $clientok = 1; @@ -7654,40 +8211,13 @@ sub make_new_child { # ------------------------------------------------------------ Process requests my $keep_going = 1; my $user_input; - unless ($clientinfoset) { - $clientinfoset = &set_client_info(); - } - $clientremoteok = 0; - unless ($clientsameinst) { - $clientremoteok = 1; - my $defdom = &Apache::lonnet::host_domain($perlvar{'lonHostID'}); - %clientprohibited = &get_prohibited($defdom); - if ($clientintdom) { - my $remsessconf = &get_usersession_config($defdom,'remotesession'); - if (ref($remsessconf) eq 'HASH') { - if (ref($remsessconf->{'remote'}) eq 'HASH') { - if (ref($remsessconf->{'remote'}->{'excludedomain'}) eq 'ARRAY') { - if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'excludedomain'}})) { - $clientremoteok = 0; - } - } - if (ref($remsessconf->{'remote'}->{'includedomain'}) eq 'ARRAY') { - if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'includedomain'}})) { - $clientremoteok = 1; - } else { - $clientremoteok = 0; - } - } - } - } - } - } + while(($user_input = get_request) && $keep_going) { alarm(120); Debug("Main: Got $user_input\n"); $keep_going = &process_request($user_input); alarm(0); - &status('Listening to '.$clientname." ($keymode)"); + &status('Listening to '.$clientname." ($keymode)"); } # --------------------------------------------- client unknown or fishy, refuse @@ -7703,8 +8233,8 @@ sub make_new_child { &logthis("CRITICAL: " ."Disconnect from $clientip ($clientname)"); - - + + # this exit is VERY important, otherwise the child will become # a producer of more and more children, forking yourself into # process death. @@ -7714,22 +8244,30 @@ sub make_new_child { # # Used to determine if a particular client is from the same domain -# as the current server, or from the same internet domain. +# as the current server, or from the same internet domain, and +# also if the client can host sessions for the domain's users. +# A hash is populated with keys set to commands sent by the client +# which may not be executed for this domain. # # Optional input -- the client to check for domain and internet domain. # If not specified, defaults to the package variable: $clientname # # If called in array context will not set package variables, but will # instead return an array of two values - (a) true if client is in the -# same domain as the server, and (b) true if client is in the same internet -# domain. +# same domain as the server, and (b) true if client is in the same +# internet domain. # # If called in scalar context, sets package variables for current client: # -# $clienthomedom - LonCAPA domain of homeID for client. -# $clientsamedom - LonCAPA domain same for this host and client. -# $clientintdom - LonCAPA "internet domain" for client. -# $clientsameinst - LonCAPA "internet domain" same for this host & client. +# $clienthomedom - LonCAPA domain of homeID for client. +# $clientsamedom - LonCAPA domain same for this host and client. +# $clientintdom - LonCAPA "internet domain" for client. +# $clientsameinst - LonCAPA "internet domain" same for this host & client. +# $clientremoteok - If current domain permits hosting on this client: 1 +# %clientprohibited - Commands prohibited for domain's users for this client. +# +# if the host and client have the same "internet domain", then the value +# of $clientremoteok is not used, and no commands are prohibited. # # returns 1 to indicate package variables have been set for current client. # @@ -7741,7 +8279,7 @@ sub set_client_info { my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost); my $homedom = &Apache::lonnet::host_domain($clientserverhomeID); my $samedom = 0; - if ($perlvar{'lonDefDom'} eq $homedom) { + if ($perlvar{'lonDefDomain'} eq $homedom) { $samedom = 1; } my $intdom = &Apache::lonnet::internet_dom($clientserverhomeID); @@ -7761,6 +8299,13 @@ sub set_client_info { $clientsamedom = $samedom; $clientintdom = $intdom; $clientsameinst = $sameinst; + if ($clientsameinst) { + undef($clientremoteok); + undef(%clientprohibited); + } else { + $clientremoteok = &get_remote_hostable($currentdomainid); + %clientprohibited = &get_prohibited($currentdomainid); + } return 1; } } @@ -7978,8 +8523,15 @@ sub validate_user { } elsif ((($domdefaults{'auth_def'} eq 'krb4') || ($domdefaults{'auth_def'} eq 'krb5')) && ($domdefaults{'auth_arg_def'} ne '')) { - $howpwd = $domdefaults{'auth_def'}; - $contentpwd = $domdefaults{'auth_arg_def'}; + # + # Don't attempt authentication for username and password supplied + # for user without an account if uername contains @ to avoid + # call to &Authen::Krb5::parse_name() which will result in con_lost + # + unless ($user =~ /\@/) { + $howpwd = $domdefaults{'auth_def'}; + $contentpwd = $domdefaults{'auth_arg_def'}; + } } } } @@ -8508,6 +9060,7 @@ sub sethost { eq &Apache::lonnet::get_host_ip($hostid)) { $currenthostid =$hostid; $currentdomainid=&Apache::lonnet::host_domain($hostid); + &set_client_info(); # &logthis("Setting hostid to $hostid, and domain to $currentdomainid"); } else { &logthis("Requested host id $hostid not an alias of ". @@ -8584,6 +9137,32 @@ sub get_prohibited { return %prohibited; } +sub get_remote_hostable { + my ($dom) = @_; + my $result; + if ($clientintdom) { + $result = 1; + my $remsessconf = &get_usersession_config($dom,'remotesession'); + if (ref($remsessconf) eq 'HASH') { + if (ref($remsessconf->{'remote'}) eq 'HASH') { + if (ref($remsessconf->{'remote'}->{'excludedomain'}) eq 'ARRAY') { + if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'excludedomain'}})) { + $result = 0; + } + } + if (ref($remsessconf->{'remote'}->{'includedomain'}) eq 'ARRAY') { + if (grep(/^\Q$clientintdom\E$/,@{$remsessconf->{'remote'}->{'includedomain'}})) { + $result = 1; + } else { + $result = 0; + } + } + } + } + } + return $result; +} + sub distro_and_arch { return $dist.':'.$arch; }