--- loncom/interface/lonpreferences.pm 2016/01/27 01:43:01 1.196.4.17 +++ loncom/interface/lonpreferences.pm 2013/03/19 00:37:03 1.204 @@ -1,7 +1,7 @@ # The LearningOnline Network # Preferences # -# $Id: lonpreferences.pm,v 1.196.4.17 2016/01/27 01:43:01 raeburn Exp $ +# $Id: lonpreferences.pm,v 1.204 2013/03/19 00:37:03 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -36,6 +36,8 @@ use strict; use LONCAPA; use Apache::Constants qw(:common); use Apache::File; +use Crypt::DES; +use DynaLoader; # for Crypt::DES version use Apache::loncommon(); use Apache::lonhtmlcommon(); use Apache::lonlocal; @@ -43,6 +45,50 @@ use Apache::lonnet; use LONCAPA::lonauthcgi(); use LONCAPA(); +# +# Write lonnet::passwd to do the call below. +# Use: +# my $answer=reply("encrypt:passwd:$udom:$uname:$upass",$tryserver); +# +################################################## +# password associated functions # +################################################## +sub des_keys { + # Make a new key for DES encryption. + # Each key has two parts which are returned separately. + # Please note: Each key must be passed through the &hex function + # before it is output to the web browser. The hex versions cannot + # be used to decrypt. + my @hexstr=('0','1','2','3','4','5','6','7', + '8','9','a','b','c','d','e','f'); + my $lkey=''; + for (0..7) { + $lkey.=$hexstr[rand(15)]; + } + my $ukey=''; + for (0..7) { + $ukey.=$hexstr[rand(15)]; + } + return ($lkey,$ukey); +} + +sub des_decrypt { + my ($key,$cyphertext) = @_; + my $keybin=pack("H16",$key); + my $cypher; + if ($Crypt::DES::VERSION>=2.03) { + $cypher=new Crypt::DES $keybin; + } else { + $cypher=new DES $keybin; + } + my $plaintext= + $cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,0,16)))); + $plaintext.= + $cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,16,16)))); + $plaintext=substr($plaintext,1,ord(substr($plaintext,0,1)) ); + return $plaintext; +} + ################################################################ # Handler subroutines # ################################################################ @@ -165,7 +211,7 @@ sub texenginechanger { 'tth' => 'tth (TeX to HTML)', #'ttm' => 'TeX to MathML', 'jsMath' => 'jsMath', - 'MathJax' => 'MathJax', + 'MathJax' => 'MathJax', 'mimetex' => 'mimetex (Convert to Images)', 'raw' => 'Raw (Screen Reader)' ); @@ -183,7 +229,6 @@ sub texenginechanger { 'change' => 'Save', 'exmpl' => 'Examples', 'mathjax' => 'MathJax:', - 'mathjaxinfo' => 'MathJax provides rendered equations whose source code can be extracted in TeX and MathML formats by right clicking the equation.', 'jsmath' => 'jsMath:', 'tth' => 'tth (TeX to HTML):', 'mimetex' => 'mimetex (Convert to Images):', @@ -220,10 +265,10 @@ $lt{'exmpl'}
-$lt{'mathjaxinfo'} +MathJax provides rendered equations whose source code can be extracted in TeX and MathML formats by right clicking the equation.
- +
- +
ENDLSCREEN if ($env{'environment.texengine'} ne 'jsMath') { @@ -309,7 +354,7 @@ sub rolesprefchanger { my $hotlist_n=$userenv{'recentrolesn'}; my ($checkedon,$checkedoff); if ($hotlist_flag) { - $checkedon = 'checked="checked"'; + $checkedon = 'checked="checked"'; } else { $checkedoff = 'checked="checked"'; } @@ -392,7 +437,7 @@ $options.' &Apache::lonhtmlcommon::row_closure(1). &Apache::lonhtmlcommon::end_pick_box().' '); - if ($roles_check_list) { + if ($roles_check_list) { $r->print(''.&mt('The table below can be used to [_1]freeze[_2] '.$lc_role.'s in the Hotlist.','','
').'
'.
@@ -402,7 +447,7 @@ $options.'