[BACK]Return to lonpreferences.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / interface

Diff for /loncom/interface/lonpreferences.pm between versions 1.3 and 1.4

version 1.3, 2002/02/15 22:04:39 version 1.4, 2002/02/19 21:50:40
Line 49  use Apache::Constants qw(:common); Line 49  use Apache::Constants qw(:common);
 use Apache::File;  use Apache::File;
 use Crypt::DES;  use Crypt::DES;
 use DynaLoader; # for Crypt::DES version  use DynaLoader; # for Crypt::DES version
   use Apache::loncommon();
   
 #------------------- forms to be output  
 my $passwordform =<<ENDPASSWORDFORM;  
 <form name="client" action="/adm/preferences" method="post">  
 <input type="hidden" name="action" value="changepass">  
 <input type="submit" value="Change password">  
 </form>  
 ENDPASSWORDFORM  
   
 my $environmentform = <<ENDENVIRONMENTFORM;  
 <p>  
 There are currently no environment variables you can change.  
 </p>  
 <!----  
     You may set the following environment variables:  
     <table>  
     <tr><th>Environment Setting</th><th>Current Value</th></tr>  
     <tr>  
         <td colspan="2">  
         <font color="#ff0000">No variables currently set up</font>  
         </td>  
     </tr>  
     </table>  
  -->  
 ENDENVIRONMENTFORM  
 #------------------ end of forms to be output  
   
 ################################################################  
 #                       Handler subroutines                    #  
 ################################################################  
 #  #
 # Write lonnet::passwd to do the call below.  # Write lonnet::passwd to do the call below.
 # Use:  # Use:
 #   my $answer=reply("encrypt:passwd:$udom:$uname:$upass",$tryserver);  #   my $answer=reply("encrypt:passwd:$udom:$uname:$upass",$tryserver);
 #  #
 # I really should write some javascript to check on the client side for  
 # mismatched passwords, but other problems are more pressing  
 #  
 ##################################################  ##################################################
 #          password associated functions         #  #          password associated functions         #
 ##################################################  ##################################################
 sub des_keys {  sub des_keys {
     # Make a new key for DES encryption      # Make a new key for DES encryption.
     # Each key has two parts which are returned seperately      # Each key has two parts which are returned seperately.
       # 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',      my @hexstr=('0','1','2','3','4','5','6','7',
                 '8','9','a','b','c','d','e','f');                  '8','9','a','b','c','d','e','f');
     my $lkey='';      my $lkey='';
Line 119  sub des_decrypt { Line 91  sub des_decrypt {
  $cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,0,16))));   $cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,0,16))));
     $plaintext.=      $plaintext.=
  $cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,16,16))));   $cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,16,16))));
     $plaintext=unpack("a8",$plaintext);      $plaintext=substr($plaintext,1,ord(substr($plaintext,0,1)) );
     $plaintext=substr($plaintext,1,ord(substr($plaintext,0,1)));  
     unpack("a8",$plaintext);  
     return $plaintext;      return $plaintext;
 }  }
   
   ################################################################
   #                       Handler subroutines                    #
   ################################################################
   
   ######################################################
   #            password handler subroutines            #
   ######################################################
 sub passwordchanger {  sub passwordchanger {
       # This function is a bit of a mess....
     # Passwords are encrypted using londes.js (DES encryption)      # Passwords are encrypted using londes.js (DES encryption)
     #  
     my $r = shift;      my $r = shift;
       my $errormessage = shift;
       $errormessage = ($errormessage || '');
     my $user       = $ENV{'user.name'};      my $user       = $ENV{'user.name'};
     my $domain     = $ENV{'user.domain'};      my $domain     = $ENV{'user.domain'};
     my $homeserver = $ENV{'user.home'};      my $homeserver = $ENV{'user.home'};
Line 140  sub passwordchanger { Line 119  sub passwordchanger {
     my ($lkey_cpass ,$ukey_cpass ) = &des_keys();      my ($lkey_cpass ,$ukey_cpass ) = &des_keys();
     my ($lkey_npass1,$ukey_npass1) = &des_keys();      my ($lkey_npass1,$ukey_npass1) = &des_keys();
     my ($lkey_npass2,$ukey_npass2) = &des_keys();      my ($lkey_npass2,$ukey_npass2) = &des_keys();
     # Store the keys      # Store the keys in the log files
     my $lonhost = $r->dir_config('lonHostID');      my $lonhost = $r->dir_config('lonHostID');
     my $logtoken=Apache::lonnet::reply('tmpput:'      my $logtoken=Apache::lonnet::reply('tmpput:'
        .$ukey_cpass  . $lkey_cpass .'&'         .$ukey_cpass  . $lkey_cpass .'&'
        .$ukey_npass1 . $lkey_npass1.'&'         .$ukey_npass1 . $lkey_npass1.'&'
        .$ukey_npass2 . $lkey_npass2,         .$ukey_npass2 . $lkey_npass2,
        $lonhost);         $lonhost);
     # Hexify these keys      # Hexify the keys for output as javascript variables
     $ukey_cpass = hex($ukey_cpass);      $ukey_cpass = hex($ukey_cpass);
     $lkey_cpass = hex($lkey_cpass);      $lkey_cpass = hex($lkey_cpass);
     $ukey_npass1= hex($ukey_npass1);      $ukey_npass1= hex($ukey_npass1);
Line 155  sub passwordchanger { Line 134  sub passwordchanger {
     $ukey_npass2= hex($ukey_npass2);      $ukey_npass2= hex($ukey_npass2);
     $lkey_npass2= hex($lkey_npass2);      $lkey_npass2= hex($lkey_npass2);
     # Output javascript to deal with passwords      # Output javascript to deal with passwords
     $r->print(<<ENDHEADER);      # Output DES javascript
 <html>  
 <head>  
 <title>The LearningOnline Network with CAPA</title>  
 </head>  
 ENDHEADER  
    # Output DES javascript  
     {      {
  my $include = $r->dir_config('lonIncludes');   my $include = $r->dir_config('lonIncludes');
  my $jsh=Apache::File->new($include."/londes.js");   my $jsh=Apache::File->new($include."/londes.js");
Line 199  ENDHEADER Line 172  ENDHEADER
 </script>  </script>
 <h1>Preferences for $user</h1>  <h1>Preferences for $user</h1>
 <h3>$user is a member of domain $domain</h3>  <h3>$user is a member of domain $domain</h3>
   $errormessage
 <p>  <p>
 Change password for $user  Change password for $user
 </p>  </p>
Line 211  Change password for $user Line 185  Change password for $user
 <input type="hidden" name="logtoken"    value="$logtoken" />  <input type="hidden" name="logtoken"    value="$logtoken" />
 <input type="hidden" name="action"      value="verify_and_change_pass" />  <input type="hidden" name="action"      value="verify_and_change_pass" />
 <input type="hidden" name="currentpass" value="" />  <input type="hidden" name="currentpass" value="" />
 <input type="hidden" name="newpass_1"    value="" />  <input type="hidden" name="newpass_1"   value="" />
 <input type="hidden" name="newpass_2"    value="" />  <input type="hidden" name="newpass_2"   value="" />
 </form>  </form>
   
 <form name="client" >  <form name="client" >
 <table>  <table>
 <tr><td align="right"> Current password:             </td>  <tr><td align="right"> Current password:                      </td>
     <td><input type="password" name="currentpass" /> </td></tr>      <td><input type="password" name="currentpass" size="10"/> </td></tr>
 <tr><td align="right"> New password:                 </td>  <tr><td align="right"> New password:                          </td>
     <td><input type="password" name="newpass_1" />    </td></tr>      <td><input type="password" name="newpass_1" size="10"  /> </td></tr>
 <tr><td align="right"> Confirm password:             </td>  <tr><td align="right"> Confirm password:                      </td>
     <td><input type="password" name="newpass_2" />    </td></tr>      <td><input type="password" name="newpass_2" size="10"  /> </td></tr>
 <tr><td colspan="2" align="center">  <tr><td colspan="2" align="center">
     <input type="button" value="Change Password" onClick="send();">      <input type="button" value="Change Password" onClick="send();">
 </table>  </table>
 <input type="hidden" name="ukey_cpass"   value="$ukey_cpass" />  <input type="hidden" name="ukey_cpass"  value="$ukey_cpass" />
 <input type="hidden" name="lkey_cpass"   value="$lkey_cpass" />  <input type="hidden" name="lkey_cpass"  value="$lkey_cpass" />
 <input type="hidden" name="ukey_npass1" value="$ukey_npass1" />  <input type="hidden" name="ukey_npass1" value="$ukey_npass1" />
 <input type="hidden" name="lkey_npass1" value="$lkey_npass1" />  <input type="hidden" name="lkey_npass1" value="$lkey_npass1" />
 <input type="hidden" name="ukey_npass2" value="$ukey_npass2" />  <input type="hidden" name="ukey_npass2" value="$ukey_npass2" />
Line 245  sub verify_and_change_password { Line 219  sub verify_and_change_password {
     my $domain     = $ENV{'user.domain'};      my $domain     = $ENV{'user.domain'};
     my $homeserver = $ENV{'user.home'};      my $homeserver = $ENV{'user.home'};
     my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);      my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
       # Check for authentication types that allow changing of the password.
       return if ($currentauth !~ /^(unix|internal):/);
     #      #
     $r->print("<h1>verify and change password</h1>\n");      $r->print(<<ENDHEADER);
   <html>
   <head>
   <title>LON-CAPA Preferences:  Change password for $user</title>
   </head>
   ENDHEADER
     #      #
     my $currentpass = $ENV{'form.currentpass'};       my $currentpass = $ENV{'form.currentpass'}; 
     my $newpass1    = $ENV{'form.newpass_1'};       my $newpass1    = $ENV{'form.newpass_1'}; 
     my $newpass2    = $ENV{'form.newpass_2'};      my $newpass2    = $ENV{'form.newpass_2'};
     my $logtoken    = $ENV{'form.logtoken'};      my $logtoken    = $ENV{'form.logtoken'};
     # Check for empty data       # Check for empty data 
     if (!(defined($currentpass) &&       unless (defined($currentpass) && 
   defined($newpass1)    &&       defined($newpass1)    && 
   defined($newpass2))){      defined($newpass2)    ){
  $r->print("<font color='#ff0000'>ERROR</font> Password data was ".   &passwordchanger($r,"<p>\n<font color='#ff0000'>ERROR</font>".
   "blank.\n");   "Password data was blank.\n</p>");
  return;   return;
     }      }
     # Get the keys      # Get the keys
     my $lonhost = $r->dir_config('lonHostID');      my $lonhost = $r->dir_config('lonHostID');
     my $tmpinfo = Apache::lonnet::reply('tmpget:'.$logtoken,$lonhost);      my $tmpinfo = Apache::lonnet::reply('tmpget:'.$logtoken,$lonhost);
     if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {      if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
           # I do not a have a better idea about how to handle this
  $r->print(<<ENDERROR);   $r->print(<<ENDERROR);
 <p>  <p>
 <font color="#ff0000">ERROR:</font> Unable to retrieve stored token for  <font color="#ff0000">ERROR:</font> Unable to retrieve stored token for
 password decryption.    password decryption.  Please log out and try again.
 </p>  </p>
 ENDERROR  ENDERROR
           # Probably should log an error here
         return;          return;
     }      }
     my ($ckey,$n1key,$n2key)=split(/&/,$tmpinfo);      my ($ckey,$n1key,$n2key)=split(/&/,$tmpinfo);
     # decrypt      # 
     my $currentpass = &des_decrypt($ckey ,$currentpass);      my $currentpass = &des_decrypt($ckey ,$currentpass);
     my $newpass1    = &des_decrypt($n1key,$newpass1);      my $newpass1    = &des_decrypt($n1key,$newpass1);
     my $newpass2    = &des_decrypt($n2key,$newpass2);      my $newpass2    = &des_decrypt($n2key,$newpass2);
     # Sanity check      # 
     if ($newpass1 ne $newpass2) {      if ($newpass1 ne $newpass2) {
  $r->print('<font color="#ff0000">ERROR:</font>The new passwords you '.   &passwordchanger($r,
   'entered do not match.  Please try again.');   '<font color="#ff0000">ERROR:</font>'.
  &passwordchanger($r);   'The new passwords you entered do not match.  '.
    'Please try again.');
    return;
       }
       if (length($newpass1) < 7) {
    &passwordchanger($r,
    '<font color="#ff0000">ERROR:</font>'.
    'Passwords must be a minimum of 7 characters long.  '.
    'Please try again.');
  return;   return;
     }      }
       #
       # Check for bad characters
       my $badpassword = 0;
       foreach (split(//,$newpass1)) {
    $badpassword = 1 if ((ord($_)<32)||(ord($_)>126));
       }
       if ($badpassword) {
    # I can't figure out how to enter bad characters on my browser.
    &passwordchanger($r,<<ENDERROR);
   <font color="#ff0000">ERROR:</font>
   The password you entered contained illegal characters.<br />
   Valid characters are: space and <br />
   <pre>
   !&quot;\#$%&amp;\'()*+,-./0123456789:;&lt;=&gt;?\@
   ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_\`abcdefghijklmnopqrstuvwxyz{|}~
   </pre>
   ENDERROR
       }
       # 
       # Change the password (finally)
       my $result = &Apache::lonnet::changepass
    ($user,$domain,$currentpass,$newpass1,$homeserver);
       # Inform the user the password has (not?) been changed
       if ($result =~ /^ok$/) {
    $r->print(<<"ENDTEXT");
   <h2>Password for $user was successfully changed</h2>
   ENDTEXT
       } else {
    # error error: run in circles, scream and shout
           $r->print(<<ENDERROR);
   <h2><font color="#ff0000">Password for $user was not changed</font></h2>
   There was an internal error when attempting to change your password.
   Please contact your instructor or the domain coordinator.
   ENDERROR
       }
       return;
 }  }
   
   ######################################################
   #            other handler subroutines               #
   ######################################################
   
   
 ################################################################  ################################################################
 #                          Main handler                        #  #                          Main handler                        #
 ################################################################  ################################################################
Line 294  sub handler { Line 326  sub handler {
     my $user = $ENV{'user.name'};      my $user = $ENV{'user.name'};
     my $domain = $ENV{'user.domain'};      my $domain = $ENV{'user.domain'};
     $r->content_type('text/html');      $r->content_type('text/html');
       # Some pages contain DES keys and should not be cached.
       &Apache::loncommon::no_cache($r);
     $r->send_http_header;      $r->send_http_header;
     return OK if $r->header_only;      return OK if $r->header_only;
     # Spit out the header      # Spit out the header
Line 305  sub handler { Line 339  sub handler {
  $r->print(<<ENDHEADER);   $r->print(<<ENDHEADER);
 <html>  <html>
 <head>  <head>
 <title>The LearningOnline Network with CAPA</title>  <title>LON-CAPA Preferences</title>
 </head>  </head>
 <body bgcolor="#FFFFFF" >  <body bgcolor="#FFFFFF" >
 <h1>Preferences for $user</h1>  <h1>Preferences for $user</h1>
Line 314  ENDHEADER Line 348  ENDHEADER
  # Determine current authentication method   # Determine current authentication method
  my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);   my $currentauth=&Apache::lonnet::queryauthenticate($user,$domain);
  if ($currentauth =~ /^(unix|internal):/) {   if ($currentauth =~ /^(unix|internal):/) {
     $r->print($passwordform);      $r->print(<<ENDPASSWORDFORM);
   <form name="client" action="/adm/preferences" method="post">
   <input type="hidden" name="action" value="changepass">
   <input type="submit" value="Change password">
   </form>
   ENDPASSWORDFORM
               # Other preference setting code should be added here
  }   }
  $r->print($environmentform);  
     }      }
     # Spit out the footer  
     $r->print(<<ENDFOOTER);      $r->print(<<ENDFOOTER);
 </body>  </body>
 </html>  </html>
Removed from v.1.3  
changed lines
  Added in v.1.4

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>