--- loncom/interface/lonsource.pm	2007/08/28 22:23:22	1.19
+++ loncom/interface/lonsource.pm	2012/10/29 17:38:56	1.29
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
-# Souce Code handler
+# Source Code handler
 #
-# $Id: lonsource.pm,v 1.19 2007/08/28 22:23:22 albertel Exp $
+# $Id: lonsource.pm,v 1.29 2012/10/29 17:38:56 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -40,7 +40,7 @@ use Apache::lonmeta;
 use Apache::File;
 use Apache::lonlocal;
 use HTML::Entities;
-use LONCAPA;
+use LONCAPA qw(:DEFAULT :match);
 
 sub make_link {
     my ($filename, $listname) = @_;
@@ -50,32 +50,28 @@ sub make_link {
 }
 
 sub stage_2 {
-    my ($r, $filename, $author, $listname) = @_;
-    $filename = $filename;
-    &Apache::loncommon::content_type($r,'text/html');
-    my ($uname, $udom) = &Apache::loncacc::constructaccess('/~'.$author.'/',$r->dir_config('lonDefDomain'));
-    $r->send_http_header;
-    $r->print(&Apache::loncommon::start_page('Problem source code moving operation'));
-    $r->print("Please enter the directory that you would like the source code to go into, a default has also been 			provided <br />");
-    $r->print("Also note, the path is in reference to the root of your construction space, and new directories will be 			automatically created. <br /><br />");
+    my ($r, $filename, $listname) = @_;
+    my ($author)=($filename=~/\/res\/[^\/]+\/([^\/]+)\//);
+    $r->print(&Apache::loncommon::start_page('Copy Problem Source Code to Construction Space')
+             .&mt('Please enter the directory that you would like the source code to go into.')
+             .'<p>'
+             .&mt('Note: the path is in reference to the root of your construction space,'
+                 .' and new directories will be automatically created.')
+             .'</p>');
     $r->print('<form name="copy" action="/adm/source" target="_parent" method="post">
               <input type="hidden" name="filename" value="'.$filename.'" />
               <input type="hidden" name="listname" value="'.$listname.'" />
               <input type="hidden" name="action" value="copy_stage" />
-              <input type="text" size="50" name="newpath" value="/shared_source/'.$author.'" />&nbsp;
-              <input type="submit" value="Copy" />
+              <input type="text" size="50" name="newpath" value="/'.&mt('shared_source').'/'.$author.'" />&nbsp;
+              <input type="submit" value="'.&mt('Copy').'" />
               </form>');
     return OK;
 }
 
-
-sub copy_stage {
-    my ($r, $filename, $listname, $newpath) = @_;
+sub copy_author {
     my $role;
     my $domain;
     my $author_name;
-#Figure out if we are author or co-author
-
     if ($env{'request.role'} =~ m{^ca\.}) {
         ($role, $domain, $author_name) = split(/\//,$env{'request.role'});
     } else {
@@ -83,38 +79,55 @@ sub copy_stage {
         $domain = $env{'user.domain'};
         $author_name = $env{'user.name'};
     }
+    return ($role,$author_name,$domain);
+}
+
+
+sub copy_stage {
+    my ($r, $filename, $listname, $newpath) = @_;
+
+#Figure out if we are author or co-author
+    my ($role,$author_name,$domain)=&copy_author();
+
+# Construct path to copy and filter out any possibly nasty stuff
+    my $path_to_new_file = $r->dir_config('lonDocRoot').
+                           "/priv/$domain/$author_name/$newpath/$listname";
+    $path_to_new_file=~s/\.\.//g;
+    $path_to_new_file=~s/\~//g;
+    $path_to_new_file=~s/\/+/\//g;
 
-    my $path_to_new_file = '/home/'.$author_name.'/public_html/'.$newpath.'/'.$listname;
 #Just checking again for access as we want to make sure that it is really ok now that we have the real path
 
-    my ($uname,$udom)= &Apache::loncacc::constructaccess($path_to_new_file,$domain);
-    unless (($uname) && ($udom)) {
-        return HTTP_NOT_ACCEPTABLE;
+    my ($uname,$udom)= &Apache::lonnet::constructaccess($path_to_new_file);
+
+    if (!$uname || !$udom) {
+	$r->print(&Apache::loncommon::start_page('Not Allowed'));
+	$r->print(&mt('Not allowed to create file [_1]', $path_to_new_file));
+	$r->print(&Apache::loncommon::end_page());
+	return;
     }
-    &Apache::loncommon::content_type($r,'text/html');
-    $r->send_http_header;
+
+    #allowed
     $r->print(&Apache::loncommon::start_page('Copying Source'));
     my $result = &Apache::loncfile::exists($uname, $udom, $path_to_new_file);
     $r->print($result);
     if(($result) && ($result =~ m|published|) ) {
-        &delete_copy_file($r, $author_name, $newpath, $filename, $path_to_new_file, '1');
+	&delete_copy_file($r, $newpath, $filename, $path_to_new_file, '1');
     } elsif(($result) && ($result =~ m|exists!|)) {
-        &confirm($r, $author_name, $newpath, $filename, $path_to_new_file);
+	&confirm($r, $newpath, $filename, $path_to_new_file);
     } else {
-        &copy_file($r, $author_name, $newpath, $filename, $path_to_new_file);
+	&copy_file($r, $newpath, $filename, $path_to_new_file);
     }
-
-    return OK;
-
+    
+    $r->print(&Apache::loncommon::end_page());
 }
 
 sub confirm {
-    my ($r, $author_name, $newpath, $filename, $path_to_new_file) = @_;
+    my ($r, $newpath, $filename, $path_to_new_file) = @_;
     $r->print("<b>Press delete to remove file and replace it with a copy of the source you are viewing</b><br /><br /	>");
     $r->print('<form name="delete_confirm" action="/adm/source" target="_parent" method="post">
               <input type="hidden" name="filename" value="'.$filename.'" />
               <input type="hidden" name="path" value="'.$path_to_new_file.'" />
-              <input type="hidden" name="author" value="'.$author_name.'" />
               <input type="hidden" name="newpath" value="'.$newpath.'" />
               <input type="hidden" name="action" value="delete_confirm" />
 
@@ -123,30 +136,40 @@ sub confirm {
 }
 
 sub delete_copy_file {
-    my ($r, $author_name, $newpath, $filename, $path_to_new_file, $type) = @_;
+    my ($r, $newpath, $filename, $path_to_new_file, $type) = @_;
     if($type eq '1') {
-        $r->print("<b>Cannot delete non-obsolete published file</b><br />Please
-              use the code view in previous window to use shared code<br /><br />");
-        $r->print('<input type="button" value="Close Window" name="close" onClick="window.close()" />');
+        $r->print('<p><span class="LC_warning">'
+                 .&mt('Cannot delete non-obsolete published file.')
+                 .'</span><br />'
+                 .&mt('Please use the code view in previous window to use shared code.')
+                 .'<br /><br />');
+        $r->print('<input type="button" value="Close Window" name="close"'
+                 .' onclick="window.close()" />'
+                 .'</p>');
     } else {
         if(-e $path_to_new_file) {
             unless(unlink($path_to_new_file)) {
-                $r->print('<font color="red">'.&mt('Error').': '.$!.'</font>');
+                $r->print('<p class="LC_error"">'.&mt('Error:').' '.$!.'</p>');
                 return 0;
             }
         } else {
-            $r->print('<p> '.&mt('No such file').'. </p></form>');
+            $r->print('<p class="LC_error">'.&mt('No such file').'</p></form>');
             return 0;
         }
-        &copy_file($r, $author_name, $newpath, $filename, $path_to_new_file);
+        &copy_file($r, $newpath, $filename, $path_to_new_file);
     }
 }
 
 sub copy_file {
-    my ($r, $author_name, $newpath, $filename, $path_to_new_file) = @_;
+    my ($r, $newpath, $filename, $path_to_new_file) = @_;
     $r->print("<b>Creating directories</b>");
-    my $path = '/home/'.$author_name.'/public_html/';
+
+#Figure out if we are author or co-author
+    my ($role,$author_name,$domain)=&copy_author();
+
+    my $path = $r->dir_config('lonDocRoot')."/priv/$domain/$author_name/";
     my @directories = split(/\//,$newpath);
+
     foreach my $now_checking (@directories) {
         if($now_checking ne '') {
             $path = $path.'/'.$now_checking;
@@ -154,11 +177,11 @@ sub copy_file {
 
             else {
                 unless(mkdir($path, 02770)) {
-                    $r->print('<font color="red">'.&mt('Error').': '.$!.'</font>');
+                    $r->print('<p class="LC_error">'.&mt('Error:').' '.$!.'</p>');
                     return 0;
                 }
                 unless(chmod(02770, ($path))) {
-                    $r->print('<font color="red"> '.&mt('Error').': '.$!.'</font>');
+                    $r->print('<p class="LC_error"> '.&mt('Error:').' '.$!.'</p>');
                     return 0;
                 }
             }
@@ -173,28 +196,86 @@ sub copy_file {
         print $fs $file_output;
     }
     $r->print("<br /><br />");
-    $r->print('<input type="button" value="Close Window" name="close" onClick="window.close()">');
+    $r->print('<input type="button" value="Close Window" name="close" onclick="window.close()" />');
     #Some 1.3'ish feature is to include the derivative feature, will go here..'
 }
 
 sub print_item {
-    my ($r, $filename) = @_;
-    my $file_output = &includemeta(&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonDocRoot'}.$filename),$filename);
-    my $count=0;
-    my $maxlength=-1;
-    foreach (split ("\n", $file_output)) {
-        $count+=int(length($_)/79);
-        $count++;
-        if (length($_) > $maxlength) {
-            $maxlength = length($_);
+    my ($r,$filename,$listname) = @_;
+    my $file_output = 
+        &includemeta(&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonDocRoot'}.$filename),
+                                              $filename);
+    $r->print(&Apache::loncommon::start_page('View Source Code',undef,
+                                             {'only_body' => 1}));
+    if ($file_output ne '') {
+        my $access_to_cstr;
+        my $lonhost = $r->dir_config('lonHostID');
+        if (&Apache::lonnet::is_library($lonhost)) {
+            my @possdoms = &Apache::lonnet::current_machine_domains();
+            foreach my $dom (@possdoms) {
+                if ($env{"user.role.au./$dom/"}) {
+                    $access_to_cstr = 1;
+                    last;  
+                }
+            }
+            unless ($access_to_cstr) {
+                foreach my $key (keys(%env)) {
+                    if ($key =~ m{^\Quser.role.ca./\E($match_domain)/}) {
+                        my $adom = $1;
+                        if (grep(/^\Q$adom\E$/,@possdoms)) {
+                            $access_to_cstr = 1;
+                            last;
+                        }
+                    }
+                }
+            }
+            if ($access_to_cstr) {
+                $r->print('
+             <form name="copy" action="/adm/source" target="_parent" method="post">
+              <input type="button" value="'.&mt('Close Window').'" name="close" onclick="window.close();" />
+              <input type="hidden" name="filename" value="'.$filename.'" />
+              <input type="hidden" name="listname" value="'.$listname.'" />
+              <input type="hidden" name="action" value="stage2" />
+              <input type="submit" value="'.&mt('Copy to Construction Space').'" />
+             </form><hr />
+                ');
+            } else {
+                $r->print('<p><span class="LC_info">'.
+                          &mt('Source code is displayed, but you can not copy to Authoring Space, as you do not have an author or co-author role on this server.').
+                          '</span></p><a href="javascript:window.close();">'.&mt('Close Window').
+                          '</a><br /><hr />'
+                         );
+            }
+        } else {
+            $r->print('<p><span class="LC_info">'.
+                      &mt('Source code is displayed, but you can not copy to Authoring Space on this server.').
+                          '</span></p><a href="javascript:window.close();">'.&mt('Close Window').
+                          '</a><br /><hr />'
+                     );
+
         }
+        my $count=0;
+        my $maxlength=-1;
+        foreach (split ("\n", $file_output)) {
+            $count+=int(length($_)/79);
+            $count++;
+            if (length($_) > $maxlength) {
+                $maxlength = length($_);
+            }
+        }
+        my $rows = $count;
+        my $cols = $maxlength;
+        $r->print('<form name="showsrc" action="" method="post" onsubmit="return false">'."\n".
+                  '<textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
+                  &HTML::Entities::encode($file_output,'<>&"').'</textarea></form>');
+    } else {
+        $r->print('<p class="LC_warning">'.
+                  &mt('Unable to retrieve file contents.').
+                  '</p><a href="javascript:window.close();">'.&mt('Close Window').'</a>'
+                 );
     }
-    my $rows = $count;
-    my $cols = $maxlength;
-    $r->print('<textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
-              &HTML::Entities::encode($file_output,'<>&"').'</textarea>');
-    return OK;
-
+    $r->print(&Apache::loncommon::end_page());
+    return;
 }
 
 sub includemeta {
@@ -211,7 +292,11 @@ sub includemeta {
     } else {
 	$file_output=~s/(\<(?:html|problem)[^\>]*\>)/$1\n\<meta name=\"isbasedontime\" content=\"\Q$copytime\E\" \/\>/i;
     }
-    return $file_output;
+    if ($file_output eq '-1') {
+        return;
+    } else {
+        return $file_output;
+    }
 }
 
 sub handler {
@@ -224,34 +309,27 @@ sub handler {
     if ($source ne 'open') {
         $env{'user.error.msg'}="$filename:cre:1:1:Source code not available";
         return HTTP_NOT_ACCEPTABLE;
-    } 
-    unless ((&Apache::lonnet::allowed('bre',$filename)) &&
-	    (&Apache::lonnet::allowed('cre','/'))) {
+    }
+    unless (&Apache::lonnet::allowed('bre',$filename)) {
         $env{'user.error.msg'}="$filename:bre:1:1:Access to resource denied";
         return HTTP_NOT_ACCEPTABLE;
-    } 
+    }
+    unless (&Apache::lonnet::allowed('cre','/')) {
+        $env{'user.error.msg'}="$filename:cre:1:1:Access to source code denied";
+        return HTTP_NOT_ACCEPTABLE;
+    }
+
+    &Apache::loncommon::content_type($r,'text/html');
+    $r->send_http_header;
+
     if ($env{'form.action'} eq 'stage2') {
-        my $author = &Apache::lonnet::metadata($filename,'authorspace');
-        ($author) = split('@',$author); #strip the domain of the author name
-        &stage_2($r, $env{'form.filename'}, $author, $listname);
+        &stage_2($r,$filename,$listname);
     } elsif($env{'form.action'} eq 'copy_stage') {
-        &copy_stage($r, $filename,$env{'form.listname'},$env{'form.newpath'});
+        &copy_stage($r,$filename,$listname,$env{'form.newpath'});
     } elsif($env{'form.action'} eq 'delete_confirm') {
-        &Apache::loncommon::content_type($r,'text/html');
-        $r->send_http_header;
-        &delete_copy_file($r, $env{'form.author'}, $env{'form.newpath'}, $env{'form.filename'}, $env{'form.path'}, '0');
+        &delete_copy_file($r,$env{'form.newpath'},$filename, $env{'form.path'}, '0');
     } else {
-        &Apache::loncommon::content_type($r,'text/html');
-        $r->send_http_header;
-        $r->print('<form name="copy" action="/adm/source" target="_parent" method="post">
-                  <input type="button" value="Close Window" name="close" onClick="window.close()" />
-                  <input type="hidden" name="filename" value="'.$filename.'" />
-                  <input type="hidden" name="listname" value="'.$listname.'" />
-                  <input type="hidden" name="action" value="stage2" />
-                  <input type="submit" value="Copy to CSTR" />
-                  </form>');
-        $r->print('<hr />');
-        &print_item($r, $env{'form.filename'});
+        &print_item($r,$filename,$listname);
     }
     return OK;
 }