Checkout of Instiki Trunk 1/21/2007.

2007-01-22 07:43:50 -06:00 · 2007-01-22 07:43:50 -06:00 · 69b62b6f33
commit 69b62b6f33
1138 changed files with 139586 additions and 0 deletions
--- a/app/controllers/application.rb
+++ b/app/controllers/application.rb
@ -0,0 +1,190 @@
+# The filters added to this controller will be run for all controllers in the application.
+# Likewise will all the methods added be available for all controllers.
+class ApplicationController < ActionController::Base
+#  require 'dnsbl_check'
+  before_filter :dnsbl_check, :connect_to_model, :check_authorization, :setup_url_generator, :set_content_type_header, :set_robots_metatag
+  after_filter :remember_location, :teardown_url_generator
+
+  # For injecting a different wiki model implementation. Intended for use in tests
+  def self.wiki=(the_wiki)
+    # a global variable is used here because Rails reloads controller and model classes in the 
+    # development environment; therefore, storing it as a class variable does not work
+    # class variable is, anyway, not much different from a global variable
+    #$instiki_wiki_service = the_wiki
+    logger.debug("Wiki service: #{the_wiki.to_s}")
+  end
+
+  def self.wiki
+    Wiki.new
+  end
+
+  protected
+
+  def check_authorization
+    if in_a_web? and authorization_needed? and not authorized?
+      redirect_to :controller => 'wiki', :action => 'login', :web => @web_name
+      return false
+    end
+  end
+
+  def connect_to_model
+    @action_name = @params['action'] || 'index'
+    @web_name = @params['web']
+    @wiki = wiki
+    @author = cookies['author'] || 'AnonymousCoward'
+    if @web_name
+      @web = @wiki.webs[@web_name]
+      if @web.nil?
+        render(:status => 404, :text => "Unknown web '#{@web_name}'")
+        return false 
+      end
+    end
+  end
+
+  FILE_TYPES = {
+    '.exe' => 'application/octet-stream',
+    '.gif' => 'image/gif',
+    '.jpg' => 'image/jpeg',
+    '.pdf' => 'application/pdf',
+    '.png' => 'image/png',
+    '.txt' => 'text/plain',
+    '.zip' => 'application/zip'
+  } unless defined? FILE_TYPES
+
+  DISPOSITION = {
+    'application/octet-stream' => 'attachment',
+    'image/gif'                => 'inline',
+    'image/jpeg'               => 'inline',
+    'application/pdf'          => 'inline',
+    'image/png'                => 'inline',
+    'text/plain'               => 'inline',
+    'application/zip'          => 'attachment'
+  } unless defined? DISPOSITION
+ 
+  def determine_file_options_for(file_name, original_options = {})
+    original_options[:type] ||= (FILE_TYPES[File.extname(file_name)] or 'application/octet-stream')
+    original_options[:disposition] ||= (DISPOSITION[original_options[:type]] or 'attachment')
+    original_options[:stream] ||= false
+    original_options
+  end
+  
+  def send_file(file, options = {})
+    determine_file_options_for(file, options)
+    super(file, options)
+  end
+
+  def password_check(password)
+    if password == @web.password
+      cookies['web_address'] = password
+      true
+    else
+      false
+    end
+  end
+
+  def password_error(password)
+    if password.nil? or password.empty?
+      'Please enter the password.'
+    else 
+      'You entered a wrong password. Please enter the right one.'
+    end
+  end
+
+  def redirect_home(web = @web_name)
+    if web
+      redirect_to_page('HomePage', web)
+    else
+      redirect_to_url '/'
+    end
+  end
+
+  def redirect_to_page(page_name = @page_name, web = @web_name)
+    redirect_to :web => web, :controller => 'wiki', :action => 'show', 
+        :id => (page_name or 'HomePage')
+  end
+
+  def remember_location
+    if @request.method == :get and 
+        @response.headers['Status'] == '200 OK' and not
+        %w(locked save back file pic import).include?(action_name)
+      @session[:return_to] = @request.request_uri
+      logger.debug "Session ##{session.object_id}: remembered URL '#{@session[:return_to]}'"
+    end
+  end
+
+  def rescue_action_in_public(exception)
+    render :status => 500, :text => <<-EOL
+      <html><body>
+        <h2>Internal Error</h2>
+        <p>An application error occurred while processing your request.</p>
+        <!-- \n#{exception}\n#{exception.backtrace.join("\n")}\n -->
+      </body></html>
+    EOL
+  end
+
+  def return_to_last_remembered
+    # Forget the redirect location
+    redirect_target, @session[:return_to] = @session[:return_to], nil
+    tried_home, @session[:tried_home] = @session[:tried_home], false
+
+    # then try to redirect to it
+    if redirect_target.nil?
+      if tried_home
+        raise 'Application could not render the index page'
+      else
+        logger.debug("Session ##{session.object_id}: no remembered redirect location, trying home")
+        redirect_home
+      end
+    else
+      logger.debug("Session ##{session.object_id}: " +
+          "redirect to the last remembered URL #{redirect_target}")
+      redirect_to_url(redirect_target)
+    end
+  end
+
+  def set_content_type_header
+    if %w(rss_with_content rss_with_headlines).include?(action_name)
+      @response.headers['Content-Type'] = 'text/xml; charset=UTF-8'
+    else
+      @response.headers['Content-Type'] = 'text/html; charset=UTF-8'
+    end
+  end
+
+  def set_robots_metatag
+    if controller_name == 'wiki' and %w(show published).include? action_name 
+      @robots_metatag_value = 'index,follow'
+    else
+      @robots_metatag_value = 'noindex,nofollow'
+    end
+  end
+
+  def setup_url_generator
+    PageRenderer.setup_url_generator(UrlGenerator.new(self))
+  end
+
+  def teardown_url_generator
+    PageRenderer.teardown_url_generator
+  end
+
+  def wiki
+    self.class.wiki
+  end
+
+  private
+
+  def in_a_web?
+    not @web_name.nil?
+  end
+
+  def authorization_needed?
+    not %w( login authenticate published rss_with_content rss_with_headlines ).include?(action_name)
+  end
+
+  def authorized?
+    @web.nil? or
+    @web.password.nil? or
+    cookies['web_address'] == @web.password or
+    password_check(@params['password'])
+  end
+
+end