From a40d927bfd9a9b3012be9e0f85da84aa4dd58344 Mon Sep 17 00:00:00 2001
From: "bbaetz%student.usyd.edu.au" <>
Date: Fri, 20 Dec 2002 15:21:24 +0000
Subject: Bug 173622 - Move template handling into a module. r=justdave, joel,
 a=justdave

---
 Bugzilla.pm                                        | 192 +++++++++++++++++
 Bugzilla/CGI.pm                                    |   2 +-
 Bugzilla/Template.pm                               | 236 +++++++++++++++++++++
 Bugzilla/Template/Plugin/Bugzilla.pm               |  53 +++++
 CGI.pl                                             |   8 +-
 collectstats.pl                                    |   2 +-
 globals.pl                                         | 197 ++---------------
 .../en/default/bug/create/create-guided.html.tmpl  |  22 +-
 template/en/default/global/help-header.html.tmpl   |   5 +-
 template/en/default/global/help.html.tmpl          |   7 +-
 .../en/default/global/site-navigation.html.tmpl    |   7 +-
 .../en/default/search/search-advanced.html.tmpl    |   7 +-
 template/en/default/search/search.html.tmpl        |   7 +-
 13 files changed, 538 insertions(+), 207 deletions(-)
 create mode 100644 Bugzilla.pm
 create mode 100644 Bugzilla/Template.pm
 create mode 100644 Bugzilla/Template/Plugin/Bugzilla.pm

diff --git a/Bugzilla.pm b/Bugzilla.pm
new file mode 100644
index 000000000..f093edaa5
--- /dev/null
+++ b/Bugzilla.pm
@@ -0,0 +1,192 @@
+# -*- Mode: perl; indent-tabs-mode: nil -*-
+#
+# The contents of this file are subject to the Mozilla Public
+# License Version 1.1 (the "License"); you may not use this file
+# except in compliance with the License. You may obtain a copy of
+# the License at http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS
+# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+# implied. See the License for the specific language governing
+# rights and limitations under the License.
+#
+# The Original Code is the Bugzilla Bug Tracking System.
+#
+# The Initial Developer of the Original Code is Netscape Communications
+# Corporation. Portions created by Netscape are
+# Copyright (C) 1998 Netscape Communications Corporation. All
+# Rights Reserved.
+#
+# Contributor(s): Bradley Baetz <bbaetz@student.usyd.edu.au>
+#
+
+package Bugzilla;
+
+use strict;
+
+use Bugzilla::CGI;
+use Bugzilla::Template;
+
+sub create {
+    my $class = shift;
+    my $B = $class->instance;
+
+    # And set up the vars for this request
+    $B->_init_transient;
+
+    return $B;
+}
+
+# We don't use Class::Singleton, because theres no need. However, I'm keeping
+# the same interface in case we do change in the future
+
+my $_instance;
+sub instance {
+    my $class = shift;
+
+    $_instance = $class->_new_instance unless ($_instance);
+
+    return $_instance;
+}
+
+sub template { return $_[0]->{_template}; }
+sub cgi { return $_[0]->{_cgi}; }
+
+# PRIVATE methods below here
+
+# Called from instance
+sub _new_instance {
+    my $class = shift;
+
+    my $self = { };
+    bless($self, $class);
+
+    $self->_init_persistent;
+
+    return $self;
+}
+
+# Initialise persistent items
+sub _init_persistent {
+    my $self = shift;
+
+    # Set up the template
+    $self->{_template} = Bugzilla::Template->create();
+}
+
+# Initialise transient (per-request) items
+sub _init_transient {
+    my $self = shift;
+
+    $self->{_cgi} = new Bugzilla::CGI if exists $::ENV{'GATEWAY_INTERFACE'};
+}
+
+# Clean up transient items such as database handles
+sub _cleanup {
+    my $self = shift;
+
+    delete $self->{_cgi};
+}
+
+sub DESTROY {
+    my $self = shift;
+
+    # Clean up transient items. We can't just let perl handle removing
+    # stuff from the $self hash because some stuff (eg database handles)
+    # may need special casing
+    # under a persistent environment (ie mod_perl)
+    $self->_cleanup;
+}
+
+1;
+
+__END__
+
+=head1 NAME
+
+Bugzilla - Semi-persistent collection of various objects used by scripts
+and modules
+
+=head1 SYNOPSIS
+
+  use Bugzilla;
+
+  Bugzilla->create;
+
+  sub someModulesSub {
+    my $B = Bugzilla->instance;
+    $B->template->process(...);
+  }
+
+=head1 DESCRIPTION
+
+Several Bugzilla 'things' are used by a variety of modules and scripts. This
+includes database handles, template objects, and so on.
+
+This module is a singleton intended as a central place to store these objects.
+This approach has several advantages:
+
+=over 4
+
+=item *
+
+They're not global variables, so we don't have issues with them staying arround
+with mod_perl
+
+=item *
+
+Everything is in one central place, so its easy to access, modify, and maintain
+
+=item *
+
+Code in modules can get access to these objects without having to have them
+all passed from the caller, and the caller's caller, and....
+
+=item *
+
+We can reuse objects across requests using mod_perl where appropriate (eg
+templates), whilst destroying those which are only valid for a single request
+(such as the current user)
+
+=back
+
+Note that items accessible via this object may be loaded when the Bugzilla
+object is created, or may be demand-loaded when requested.
+
+For something to be added to this object, it should either be able to benefit
+from persistence when run under mod_perl (such as the a C<template> object),
+or should be something which is globally required by a large ammount of code
+(such as the current C<user> object).
+
+=head1 CREATION
+
+=over 4
+
+=item C<create>
+
+Creates the C<Bugzilla> object, and initialises any per-request data
+
+=item C<instance>
+
+Returns the current C<Bugzilla> instance. If one doesn't exist, then it will
+be created, but no per-request data will be set. The only use this method has
+for creating the object is from a mod_perl init script. (Its also what
+L<Class::Singleton> does, and I'm trying to keep that interface for this)
+
+=back
+
+=head1 FUNCTIONS
+
+=over 4
+
+=item C<template>
+
+The current C<Template> object, to be used for output
+
+=item C<cgi>
+
+The current C<cgi> object. Note that modules should B<not> be using this in
+general. Not all Bugzilla actions are cgi requests. Its useful as a convenience
+method for those scripts/templates which are only use via CGI, though.
+
+=back
diff --git a/Bugzilla/CGI.pm b/Bugzilla/CGI.pm
index ae0546c2e..ad609c2ab 100644
--- a/Bugzilla/CGI.pm
+++ b/Bugzilla/CGI.pm
@@ -111,7 +111,7 @@ __END__
 
 =head1 NAME
 
-  Bugzilla::CGI - CGI handling for Bugzilla
+Bugzilla::CGI - CGI handling for Bugzilla
 
 =head1 SYNOPSIS
 
diff --git a/Bugzilla/Template.pm b/Bugzilla/Template.pm
new file mode 100644
index 000000000..abcfd3ff6
--- /dev/null
+++ b/Bugzilla/Template.pm
@@ -0,0 +1,236 @@
+# -*- Mode: perl; indent-tabs-mode: nil -*-
+#
+# The contents of this file are subject to the Mozilla Public
+# License Version 1.1 (the "License"); you may not use this file
+# except in compliance with the License. You may obtain a copy of
+# the License at http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS
+# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+# implied. See the License for the specific language governing
+# rights and limitations under the License.
+#
+# The Original Code is the Bugzilla Bug Tracking System.
+#
+# The Initial Developer of the Original Code is Netscape Communications
+# Corporation. Portions created by Netscape are
+# Copyright (C) 1998 Netscape Communications Corporation. All
+# Rights Reserved.
+#
+# Contributor(s): Terry Weissman <terry@mozilla.org>
+#                 Dan Mosedale <dmose@mozilla.org>
+#                 Jacob Steenhagen <jake@bugzilla.org>
+#                 Bradley Baetz <bbaetz@student.usyd.edu.au>
+#                 Christopher Aillon <christopher@aillon.com>
+
+package Bugzilla::Template;
+
+use strict;
+
+use Bugzilla::Config;
+use Bugzilla::Util;
+
+# for time2str - replace by TT Date plugin??
+use Date::Format ();
+
+use base qw(Template);
+
+###############################################################################
+# Templatization Code
+
+# Use the Toolkit Template's Stash module to add utility pseudo-methods
+# to template variables.
+use Template::Stash;
+
+# Add "contains***" methods to list variables that search for one or more 
+# items in a list and return boolean values representing whether or not 
+# one/all/any item(s) were found.
+$Template::Stash::LIST_OPS->{ contains } =
+  sub {
+      my ($list, $item) = @_;
+      return grep($_ eq $item, @$list);
+  };
+
+$Template::Stash::LIST_OPS->{ containsany } =
+  sub {
+      my ($list, $items) = @_;
+      foreach my $item (@$items) { 
+          return 1 if grep($_ eq $item, @$list);
+      }
+      return 0;
+  };
+
+# Add a "substr" method to the Template Toolkit's "scalar" object
+# that returns a substring of a string.
+$Template::Stash::SCALAR_OPS->{ substr } = 
+  sub {
+      my ($scalar, $offset, $length) = @_;
+      return substr($scalar, $offset, $length);
+  };
+
+# Add a "truncate" method to the Template Toolkit's "scalar" object
+# that truncates a string to a certain length.
+$Template::Stash::SCALAR_OPS->{ truncate } = 
+  sub {
+      my ($string, $length, $ellipsis) = @_;
+      $ellipsis ||= "";
+      
+      return $string if !$length || length($string) <= $length;
+      
+      my $strlen = $length - length($ellipsis);
+      my $newstr = substr($string, 0, $strlen) . $ellipsis;
+      return $newstr;
+  };
+
+# Create the template object that processes templates and specify
+# configuration parameters that apply to all templates.
+
+###############################################################################
+
+# Construct the Template object
+
+# Note that all of the failure cases here can't use templateable errors,
+# since we won't have a template to use...
+
+sub create {
+    my $class = shift;
+
+    # IMPORTANT - If you make any configuration changes here, make sure to
+    # make them in t/004.template.t and checksetup.pl.
+
+    return $class->new({
+        # Colon-separated list of directories containing templates.
+        INCLUDE_PATH => "template/en/custom:template/en/default",
+
+        # Remove white-space before template directives (PRE_CHOMP) and at the
+        # beginning and end of templates and template blocks (TRIM) for better
+        # looking, more compact content.  Use the plus sign at the beginning
+        # of directives to maintain white space (i.e. [%+ DIRECTIVE %]).
+        PRE_CHOMP => 1,
+        TRIM => 1,
+
+        COMPILE_DIR => 'data/',
+
+        # Functions for processing text within templates in various ways.
+        # IMPORTANT!  When adding a filter here that does not override a
+        # built-in filter, please also add a stub filter to checksetup.pl
+        # and t/004template.t.
+        FILTERS => {
+            # Render text in strike-through style.
+            strike => sub { return "<strike>" . $_[0] . "</strike>" },
+
+            # Returns the text with backslashes, single/double quotes,
+            # and newlines/carriage returns escaped for use in JS strings.
+            js => sub {
+                my ($var) = @_;
+                $var =~ s/([\\\'\"])/\\$1/g;
+                $var =~ s/\n/\\n/g;
+                $var =~ s/\r/\\r/g;
+                return $var;
+            },
+
+            # HTML collapses newlines in element attributes to a single space,
+            # so form elements which may have whitespace (ie comments) need
+            # to be encoded using &#013;
+            # See bugs 4928, 22983 and 32000 for more details
+            html_linebreak => sub {
+                my ($var) = @_;
+                $var =~ s/\r\n/\&#013;/g;
+                $var =~ s/\n\r/\&#013;/g;
+                $var =~ s/\r/\&#013;/g;
+                $var =~ s/\n/\&#013;/g;
+                return $var;
+            },
+
+            xml => \&Bugzilla::Util::xml_quote ,
+
+            # This filter escapes characters in a variable or value string for
+            # use in a query string.  It escapes all characters NOT in the
+            # regex set: [a-zA-Z0-9_\-.].  The 'uri' filter should be used for
+            # a full URL that may have characters that need encoding.
+            url_quote => \&Bugzilla::Util::url_quote ,
+
+            quoteUrls => \&::quoteUrls ,
+
+            bug_link => [ sub {
+                              my ($context, $bug) = @_;
+                              return sub {
+                                  my $text = shift;
+                                  return &::GetBugLink($text, $bug);
+                              };
+                          },
+                          1
+                        ],
+
+            # In CSV, quotes are doubled, and any value containing a quote or a
+            # comma is enclosed in quotes.
+            csv => sub
+            {
+                my ($var) = @_;
+                $var =~ s/\"/\"\"/g;
+                if ($var !~ /^-?(\d+\.)?\d*$/) {
+                    $var = "\"$var\"";
+                }
+                return $var;
+            } ,
+
+            # Format a time for display (more info in Bugzilla::Util)
+            time => \&Bugzilla::Util::format_time,
+        },
+
+        PLUGIN_BASE => 'Bugzilla::Template::Plugin',
+
+        # Default variables for all templates
+        VARIABLES => {
+            # Function for retrieving global parameters.
+            'Param' => \&Bugzilla::Config::Param,
+
+            # Function to create date strings
+            'time2str' => \&Date::Format::time2str,
+
+            # Function for processing global parameters that contain references
+            # to other global parameters.
+            'PerformSubsts' => \&::PerformSubsts ,
+
+            # Generic linear search function
+            'lsearch' => \&Bugzilla::Util::lsearch,
+
+            # UserInGroup - you probably want to cache this
+            'UserInGroup' => \&::UserInGroup,
+
+            # SyncAnyPendingShadowChanges
+            # - called in the footer to sync the shadowdb
+            'SyncAnyPendingShadowChanges' => \&::SyncAnyPendingShadowChanges,
+
+            # Bugzilla version
+            # This could be made a ref, or even a CONSTANT with TT2.08
+            'VERSION' => $Bugzilla::Config::VERSION ,
+        },
+
+   }) || die("Template creation failed: " . $class->error());
+}
+
+1;
+
+__END__
+
+=head1 NAME
+
+Bugzilla::Template - Wrapper arround the Template Toolkit C<Template> object
+
+=head1 SYNOPSYS
+
+  my $template = Bugzilla::Template->create;
+
+=head1 DESCRIPTION
+
+This is basically a wrapper so that the correct arguments get passed into
+the C<Template> constructor.
+
+It should not be used directly by scripts or modules - instead, use
+C<Bugzilla-E<gt>instance-E<gt>template> to get an already created module.
+
+=head1 SEE ALSO
+
+L<Bugzilla>, L<Template>
+
diff --git a/Bugzilla/Template/Plugin/Bugzilla.pm b/Bugzilla/Template/Plugin/Bugzilla.pm
new file mode 100644
index 000000000..285553b7e
--- /dev/null
+++ b/Bugzilla/Template/Plugin/Bugzilla.pm
@@ -0,0 +1,53 @@
+# -*- Mode: perl; indent-tabs-mode: nil -*-
+#
+# The contents of this file are subject to the Mozilla Public
+# License Version 1.1 (the "License"); you may not use this file
+# except in compliance with the License. You may obtain a copy of
+# the License at http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS
+# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+# implied. See the License for the specific language governing
+# rights and limitations under the License.
+#
+# The Original Code is the Bugzilla Bug Tracking System.
+#
+# The Initial Developer of the Original Code is Netscape Communications
+# Corporation. Portions created by Netscape are
+# Copyright (C) 1998 Netscape Communications Corporation. All
+# Rights Reserved.
+#
+# Contributor(s): Bradley Baetz <bbaetz@student.usyd.edu.au>
+#
+
+package Bugzilla::Template::Plugin::Bugzilla;
+
+use strict;
+
+use base qw(Template::Plugin);
+
+use Bugzilla;
+
+sub new {
+    my ($class, $context) = @_;
+
+    return Bugzilla->instance;
+}
+
+1;
+
+__END__
+
+=head1 NAME
+
+Bugzilla::Template::Plugin::Bugzilla
+
+=head1 DESCRIPTION
+
+Template Toolkit plugin to allow access to the persistent C<Bugzilla>
+object.
+
+=head1 SEE ALSO
+
+L<Bugzilla>, L<Template::Plugin>
+
diff --git a/CGI.pl b/CGI.pl
index c8da97174..6b9751df6 100644
--- a/CGI.pl
+++ b/CGI.pl
@@ -893,12 +893,10 @@ sub GetBugActivity {
 
 ############# Live code below here (that is, not subroutine defs) #############
 
-use Bugzilla::CGI();
+use Bugzilla;
 
-# XXX - mod_perl, this needs to move into all the scripts individually
-# Once we do that, look into setting DISABLE_UPLOADS, and overriding
-# on a per-script basis
-$::cgi = new Bugzilla::CGI();
+# XXX - mod_perl - reset this between runs
+$::cgi = Bugzilla->instance->cgi;
 
 # Set up stuff for compatibility with the old CGI.pl code
 # This code will be removed as soon as possible, in favour of
diff --git a/collectstats.pl b/collectstats.pl
index 5af4f45c3..1f8b4783c 100755
--- a/collectstats.pl
+++ b/collectstats.pl
@@ -54,7 +54,7 @@ foreach (@myproducts) {
 &calculate_dupes();
 
 # Generate a static RDF file containing the default view of the duplicates data.
-open(CGI, "REQUEST_METHOD=GET QUERY_STRING=ctype=rdf ./duplicates.cgi |")
+open(CGI, "GATEWAY_INTERFACE=cmdline REQUEST_METHOD=GET QUERY_STRING=ctype=rdf ./duplicates.cgi |")
   || die "can't fork duplicates.cgi: $!";
 open(RDF, ">data/duplicates.tmp")
   || die "can't write to data/duplicates.tmp: $!";
diff --git a/globals.pl b/globals.pl
index d4e4e452c..a2dbcaff8 100644
--- a/globals.pl
+++ b/globals.pl
@@ -1725,150 +1725,7 @@ sub FormatTimeUnit {
     return $newtime;
     
 }
-###############################################################################
-# Global Templatization Code
-
-# Use the template toolkit (http://www.template-toolkit.org/) to generate
-# the user interface using templates in the "template/" subdirectory.
-use Template;
-
-# Create the global template object that processes templates and specify
-# configuration parameters that apply to all templates processed in this script.
-
-# IMPORTANT - If you make any configuration changes here, make sure to make
-# them in t/004.template.t and checksetup.pl. You may also need to change the
-# date settings were last changed - see the comments in checksetup.pl for
-# details
-$::template ||= Template->new(
-  {
-    # Colon-separated list of directories containing templates.
-    INCLUDE_PATH => "template/en/custom:template/en/default" ,
-
-    # Remove white-space before template directives (PRE_CHOMP) and at the
-    # beginning and end of templates and template blocks (TRIM) for better 
-    # looking, more compact content.  Use the plus sign at the beginning 
-    # of directives to maintain white space (i.e. [%+ DIRECTIVE %]).
-    PRE_CHOMP => 1 ,
-    TRIM => 1 , 
-
-    COMPILE_DIR => 'data/',
-
-    # Functions for processing text within templates in various ways.
-    # IMPORTANT!  When adding a filter here that does not override a
-    # built-in filter, please also add a stub filter to checksetup.pl
-    # and t/004template.t.
-    FILTERS =>
-      {
-        # Render text in strike-through style.
-        strike => sub { return "<strike>" . $_[0] . "</strike>" } ,
-
-        # Returns the text with backslashes, single/double quotes,
-        # and newlines/carriage returns escaped for use in JS strings.
-        js => sub
-        {
-            my ($var) = @_;
-            $var =~ s/([\\\'\"])/\\$1/g; 
-            $var =~ s/\n/\\n/g; 
-            $var =~ s/\r/\\r/g; 
-            return $var;
-        } , 
-
-        # HTML collapses newlines in element attributes to a single space,
-        # so form elements which may have whitespace (ie comments) need
-        # to be encoded using &#013;
-        # See bugs 4928, 22983 and 32000 for more details
-        html_linebreak => sub
-        {
-            my ($var) = @_;
-            $var =~ s/\r\n/\&#013;/g;
-            $var =~ s/\n\r/\&#013;/g;
-            $var =~ s/\r/\&#013;/g;
-            $var =~ s/\n/\&#013;/g;
-            return $var;
-        } ,
-
-        # This subroutine in CGI.pl escapes characters in a variable
-        # or value string for use in a query string.  It escapes all
-        # characters NOT in the regex set: [a-zA-Z0-9_\-.].  The 'uri'
-        # filter should be used for a full URL that may have
-        # characters that need encoding.
-        url_quote => \&Bugzilla::Util::url_quote ,
-
-        xml => \&Bugzilla::Util::xml_quote ,
-
-        quoteUrls => \&quoteUrls ,
-
-        bug_link => [ sub {
-                          my ($context, $bug) = @_;
-                          return sub {
-                              my $text = shift;
-                              return GetBugLink($text, $bug);
-                          };
-                      },
-                      1
-                    ],
-
-        # In CSV, quotes are doubled, and we enclose the whole value in quotes
-        csv => sub
-        {
-            my ($var) = @_;
-            $var =~ s/"/""/g;
-            if ($var !~ /^-?(\d+\.)?\d*$/) {
-                $var = "\"$var\"";
-            }
-            return $var;
-        } ,
-
-        # Format a time for display (more info in Bugzilla::Util)
-        time => \&Bugzilla::Util::format_time,
-      } ,
-  }
-) || die("Template creation failed: " . Template->error());
-
-# Use the Toolkit Template's Stash module to add utility pseudo-methods
-# to template variables.
-use Template::Stash;
-
-# Add "contains***" methods to list variables that search for one or more 
-# items in a list and return boolean values representing whether or not 
-# one/all/any item(s) were found.
-$Template::Stash::LIST_OPS->{ contains } =
-  sub {
-      my ($list, $item) = @_;
-      return grep($_ eq $item, @$list);
-  };
-
-$Template::Stash::LIST_OPS->{ containsany } =
-  sub {
-      my ($list, $items) = @_;
-      foreach my $item (@$items) { 
-          return 1 if grep($_ eq $item, @$list);
-      }
-      return 0;
-  };
-
-# Add a "substr" method to the Template Toolkit's "scalar" object
-# that returns a substring of a string.
-$Template::Stash::SCALAR_OPS->{ substr } = 
-  sub {
-      my ($scalar, $offset, $length) = @_;
-      return substr($scalar, $offset, $length);
-  };
-    
-# Add a "truncate" method to the Template Toolkit's "scalar" object
-# that truncates a string to a certain length.
-$Template::Stash::SCALAR_OPS->{ truncate } = 
-  sub {
-      my ($string, $length, $ellipsis) = @_;
-      $ellipsis ||= "";
-      
-      return $string if !$length || length($string) <= $length;
-      
-      my $strlen = $length - length($ellipsis);
-      my $newstr = substr($string, 0, $strlen) . $ellipsis;
-      return $newstr;
-  };
-    
+
 ###############################################################################
 
 # Constructs a format object from URL parameters. You most commonly call it 
@@ -1876,59 +1733,35 @@ $Template::Stash::SCALAR_OPS->{ truncate } =
 # my $format = GetFormat("foo/bar", $::FORM{'format'}, $::FORM{'ctype'});
 sub GetFormat {
     my ($template, $format, $ctype) = @_;
-    
+
     $ctype ||= "html";
     $format ||= "";
-    
+
     # Security - allow letters and a hyphen only
     $ctype =~ s/[^a-zA-Z\-]//g;
     $format =~ s/[^a-zA-Z\-]//g;
     trick_taint($ctype);
     trick_taint($format);
-    
+
     $template .= ($format ? "-$format" : "");
     $template .= ".$ctype.tmpl";
-        
-    return 
-    { 
-        'template'    => $template , 
-        'extension'   => $ctype , 
-        'ctype' => $::contenttypes->{$ctype} || "text/plain" , 
+
+    return
+    {
+        'template'    => $template ,
+        'extension'   => $ctype ,
+        'ctype' => $::contenttypes->{$ctype} || "text/plain" ,
     };
 }
 
-###############################################################################
-
-# Define the global variables and functions that will be passed to the UI
-# template.  Additional values may be added to this hash before templates
-# are processed.
-$::vars =
-  {
-    # Function for retrieving global parameters.
-    'Param' => \&Param ,
+############# Live code below here (that is, not subroutine defs) #############
 
-    # Function to create date strings
-    'time2str' => \&time2str ,
+use Bugzilla;
 
-    # Function for processing global parameters that contain references
-    # to other global parameters.
-    'PerformSubsts' => \&PerformSubsts ,
+$::BZ = Bugzilla->create();
 
-    # Generic linear search function
-    'lsearch' => \&Bugzilla::Util::lsearch ,
+$::template = $::BZ->template();
 
-    # UserInGroup - you probably want to cache this
-    'UserInGroup' => \&UserInGroup ,
-
-    # SyncAnyPendingShadowChanges - called in the footer to sync the shadowdb
-    'SyncAnyPendingShadowChanges' => \&SyncAnyPendingShadowChanges ,
-    
-    # User Agent - useful for detecting in templates
-    'user_agent' => $ENV{'HTTP_USER_AGENT'} ,
-
-    # Bugzilla version
-    'VERSION' => $Bugzilla::Config::VERSION,
-  };
+$::vars = {};
 
 1;
-
diff --git a/template/en/default/bug/create/create-guided.html.tmpl b/template/en/default/bug/create/create-guided.html.tmpl
index 48a00e609..a4cdff9e5 100644
--- a/template/en/default/bug/create/create-guided.html.tmpl
+++ b/template/en/default/bug/create/create-guided.html.tmpl
@@ -23,7 +23,10 @@
 [%# INTERFACE:
   # This template has the same interface as create.html.tmpl
   #%]
-    
+
+[% USE Bugzilla %]
+[% cgi = Bugzilla.cgi %]
+
 [% PROCESS global/header.html.tmpl
    title = "Enter A Bug"
    onload = "PutDescription()"
@@ -62,7 +65,7 @@ function PutDescription() {
 
 [%# Browser sniff to try and reduce the incidence of 4.x and NS 6/7 bugs %]
 
-[% IF user_agent.search("Mozilla/4") AND NOT user_agent.search("compatible") %]
+[% IF cgi.user_agent("Mozilla/4") AND NOT cgi.user_agent("compatible") %]
    <div style="background-color: lightgrey; 
                border: 1px solid black; 
                padding: 2px">
@@ -79,7 +82,8 @@ function PutDescription() {
   </div>
 [% END %]
 
-[% IF (matches = user_agent.match('Netscape(\d)')) %]
+[% IF cgi.user_agent('Netscape(\d)') %]
+  [% matches = cgi.user_agent().match('Netscape(\d)') %]
   <div style="background-color: lightgrey; 
               border: 1px solid black; 
               padding: 2px">
@@ -123,9 +127,9 @@ function PutDescription() {
 </p>
 
 [%# Stop NS 4.x and all v.3 browsers from getting <iframe> code %]
-[% IF (user_agent.search("Mozilla/4") 
-         AND NOT user_agent.search("compatible")) 
-       OR (user_agent.search("Mozilla/[123]")) %]
+[% IF (cgi.user_agent("Mozilla/4") 
+         AND NOT cgi.user_agent("compatible")) 
+       OR (cgi.user_agent("Mozilla/[123]")) %]
   <p>
     Visit the <a href="duplicates.cgi">most-frequently-reported bugs page</a>
     and see if your bug is there. If not, go to the
@@ -245,7 +249,7 @@ function PutDescription() {
             </select>
           </td>
           <td valign="top" width="100%">
-            [% IF user_agent.search("Mozilla/5") %]
+            [% IF cgi.user_agent("Mozilla/5") %]
               <div id="description" style="color: green; margin-left: 10px;
                                            height: 5em; overflow: auto;">
                 Select a component to see its description here.
@@ -283,8 +287,8 @@ function PutDescription() {
     </td>
   </tr>
 
-  [% matches = user_agent.match('Gecko/(\d+)') %]
-  [% buildid = user_agent IF matches %]
+  [% matches = cgi.user_agent('Gecko/(\d+)') %]
+  [% buildid = cgi.user_agent() IF matches %]
 
   <tr bgcolor="[% tablecolour %]">
     <td align="right" valign="middle">
diff --git a/template/en/default/global/help-header.html.tmpl b/template/en/default/global/help-header.html.tmpl
index 3cbb4e371..e26405634 100644
--- a/template/en/default/global/help-header.html.tmpl
+++ b/template/en/default/global/help-header.html.tmpl
@@ -19,8 +19,11 @@
   # Contributor(s): Gervase Markham <gerv@gerv.net>
   #%]
 
+[% USE Bugzilla %]
+[% cgi = Bugzilla.cgi %]
+
 [% IF help %]
-  [% IF user_agent.search("Mozilla/5") %]
+  [% IF cgi.user_agent("Mozilla/5") %]
     <style type="text/css">
     .help {
         border-style: solid;
diff --git a/template/en/default/global/help.html.tmpl b/template/en/default/global/help.html.tmpl
index 2e43bcee6..e2201c547 100644
--- a/template/en/default/global/help.html.tmpl
+++ b/template/en/default/global/help.html.tmpl
@@ -18,9 +18,12 @@
   #
   # Contributor(s): Gervase Markham <gerv@gerv.net>
   #%]
-                  
+
+[% USE Bugzilla %]
+[% cgi = Bugzilla.cgi %]
+
 [% IF help %]
-  [% IF user_agent.search("Mozilla/5") %]
+  [% IF cgi.user_agent("Mozilla/5") %]
       [% FOREACH h = help_html %]
       <div id="[% h.id %]_help" class="help" style="display: none;">
         [%- h.html -%]  
diff --git a/template/en/default/global/site-navigation.html.tmpl b/template/en/default/global/site-navigation.html.tmpl
index e0fb49a6a..178a99167 100644
--- a/template/en/default/global/site-navigation.html.tmpl
+++ b/template/en/default/global/site-navigation.html.tmpl
@@ -24,8 +24,11 @@
   # bug_list: list of integers. List of bug numbers of current query (if any). 
   # bug.bug_id: integer. Number of current bug (for navigation purposes)
   #%]
-  
-[% IF NOT (user_agent.match("MSIE [1-6]") OR user_agent.match("Mozilla/4")) %]
+
+[% USE Bugzilla %]
+[% cgi = Bugzilla.cgi %]
+
+[% IF NOT (cgi.user_agent("MSIE [1-6]") OR cgi.user_agent("Mozilla/4")) %]
   <link rel="Top" href="[% Param('urlbase') %]">
 
   [%# *** Bug List Navigation *** %]
diff --git a/template/en/default/search/search-advanced.html.tmpl b/template/en/default/search/search-advanced.html.tmpl
index 6390741e3..765f08e25 100644
--- a/template/en/default/search/search-advanced.html.tmpl
+++ b/template/en/default/search/search-advanced.html.tmpl
@@ -25,6 +25,9 @@
   # search/boolean-charts.html.tmpl.
   #%]
 
+[% USE Bugzilla %]
+[% cgi = Bugzilla.cgi %]
+
 [% PROCESS global/header.html.tmpl 
   title = "Search for bugs"
   onload = "selectProduct(document.forms['queryform']);initHelp();"
@@ -35,7 +38,7 @@
 [%# The decent help requires Javascript %]
 [% IF NOT help %]
   <p>
-  [% IF user_agent.search("Mozilla/5") %]
+  [% IF cgi.user_agent("Mozilla/5") %]
     <script> <!--
       document.write("<a href='query.cgi?help=1'>Give me some help</a> (reloads page.)");
       // -->
@@ -51,7 +54,7 @@
   <p>
       For help, mouse over the page elements.
       <font color="red">
-      [% IF user_agent.match("Mozilla/5") %]
+      [% IF cgi.user_agent("Mozilla/5") %]
         Note that if the help popups are hidden by form element scroll bars,
         this is a bug in your browser, not in Bugzilla.
       [% END %]
diff --git a/template/en/default/search/search.html.tmpl b/template/en/default/search/search.html.tmpl
index 6390741e3..765f08e25 100644
--- a/template/en/default/search/search.html.tmpl
+++ b/template/en/default/search/search.html.tmpl
@@ -25,6 +25,9 @@
   # search/boolean-charts.html.tmpl.
   #%]
 
+[% USE Bugzilla %]
+[% cgi = Bugzilla.cgi %]
+
 [% PROCESS global/header.html.tmpl 
   title = "Search for bugs"
   onload = "selectProduct(document.forms['queryform']);initHelp();"
@@ -35,7 +38,7 @@
 [%# The decent help requires Javascript %]
 [% IF NOT help %]
   <p>
-  [% IF user_agent.search("Mozilla/5") %]
+  [% IF cgi.user_agent("Mozilla/5") %]
     <script> <!--
       document.write("<a href='query.cgi?help=1'>Give me some help</a> (reloads page.)");
       // -->
@@ -51,7 +54,7 @@
   <p>
       For help, mouse over the page elements.
       <font color="red">
-      [% IF user_agent.match("Mozilla/5") %]
+      [% IF cgi.user_agent("Mozilla/5") %]
         Note that if the help popups are hidden by form element scroll bars,
         this is a bug in your browser, not in Bugzilla.
       [% END %]
-- 
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