--- loncom/lonnet/perl/lonnet.pm	2019/08/19 17:35:34	1.1172.2.111
+++ loncom/lonnet/perl/lonnet.pm	2019/08/25 22:45:58	1.1172.2.114
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1172.2.111 2019/08/19 17:35:34 raeburn Exp $
+# $Id: lonnet.pm,v 1.1172.2.114 2019/08/25 22:45:58 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -78,7 +78,7 @@ use CGI::Cookie;
 
 use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $deftex
             $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
-            %managerstab);
+            %managerstab $passwdmin);
 
 my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
     %userrolehash, $processmarker, $dumpcount, %coursedombuf,
@@ -897,6 +897,7 @@ sub userload {
 	while ($filename=readdir(LONIDS)) {
 	    next if ($filename eq '.' || $filename eq '..');
 	    next if ($filename =~ /publicuser_\d+\.id/);
+            next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
 	    my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
 	    if ($curtime-$mtime < 1800) { $numusers++; }
 	}
@@ -1195,6 +1196,9 @@ sub changepass {
     } elsif ($answer =~ "invalid_client") {
         &logthis("$server refused to change $uname in $udom password because ".
                  "it was a reset by e-mail originating from an invalid server.");
+    } elsif ($answer =~ "^prioruse") {
+       &logthis("$server refused to change $uname in $udom password because ".
+                "the password had been used before");
     }
     return $answer;
 }
@@ -2464,6 +2468,29 @@ sub retrieve_instcodes {
     return $totcodes;
 }
 
+# --------------------------------------------- Get domain config for passwords
+
+sub get_passwdconf {
+    my ($dom) = @_;
+    my (%passwdconf,$gotconf,$lookup);
+    my ($result,$cached)=&is_cached_new('passwdconf',$dom);
+    if (defined($cached)) {
+        if (ref($result) eq 'HASH') {
+            %passwdconf = %{$result};
+            $gotconf = 1;
+        }
+    }
+    unless ($gotconf) {
+        my %domconfig = &get_dom('configuration',['passwords'],$dom);
+        if (ref($domconfig{'passwords'}) eq 'HASH') {
+            %passwdconf = %{$domconfig{'passwords'}};
+        }
+        my $cachetime = 24*60*60;
+        &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
+    }
+    return %passwdconf;
+}
+
 # --------------------------------------------------- Assign a key to a student
 
 sub assign_access_key {
@@ -13908,6 +13935,11 @@ BEGIN {
     $deftex = LONCAPA::texengine();
 }
 
+# ------------- set default minimum length for passwords for internal auth users
+{
+    $passwdmin = LONCAPA::passwd_min();
+}
+
 $memcache=new Cache::Memcached({'servers'           => ['127.0.0.1:11211'],
 				'compress_threshold'=> 20_000,
  			        });