require 'fileutils' require 'maruku' require 'zip/zip' require 'stringsupport' require 'resolv' class WikiController < ApplicationController before_filter :load_page before_filter :dnsbl_check, :only => [:edit, :new, :save, :export_html, :export_markup] caches_action :show, :published, :authors, :tex, :s5, :print, :recently_revised, :list, :file_list, :atom_with_content, :atom_with_headlines, :if => Proc.new { |c| c.send(:do_caching?) } cache_sweeper :revision_sweeper layout 'default', :except => [:atom_with_content, :atom_with_headlines, :atom, :tex, :s5, :export_html] def index if @web_name redirect_home elsif not @wiki.setup? redirect_to :controller => 'admin', :action => 'create_system' elsif @wiki.webs.length == 1 redirect_home @wiki.webs.values.first.address else redirect_to :action => 'web_list' end end # Outside a single web -------------------------------------------------------- def authenticate if password_check(params['password']) redirect_home else flash[:info] = password_error(params['password']) redirect_to :action => 'login', :web => @web_name end end def login # to template end def web_list @webs = wiki.webs.values.sort_by { |web| web.name } end # Within a single web --------------------------------------------------------- def authors @page_names_by_author = @web.page_names_by_author @authors = @page_names_by_author.keys.sort end def file_list sort_order = params['sort_order'] || 'file_name' case sort_order when 'file_name' @alt_sort_order = 'created_at' @alt_sort_name = 'date' else @alt_sort_order = 'file_name' @alt_sort_name = 'filename' end @file_list = @web.file_list(sort_order) end def export_html stylesheet = File.read(File.join(RAILS_ROOT, 'public', 'stylesheets', 'instiki.css')) export_pages_as_zip(html_ext) do |page| renderer = PageRenderer.new(page.revisions.last) rendered_page = <<-EOL #{page.plain_name} in #{@web.name}

#{@web.name}
#{page.plain_name}

#{renderer.display_content_for_export}
#{page.revisions? ? "Revised" : "Created" } on #{ page.revised_at.strftime('%B %d, %Y %H:%M:%S') } by #{ UrlGenerator.new(self).make_link(page.author.name, @web, nil, { :mode => :export }) }
EOL rendered_page end end def export_markup export_pages_as_zip(@web.markup) { |page| page.content } end # def export_pdf # file_name = "#{@web.address}-tex-#{@web.revised_at.strftime('%Y-%m-%d-%H-%M-%S')}" # file_path = File.join(@wiki.storage_path, file_name) # # export_web_to_tex "#{file_path}.tex" unless FileTest.exists? "#{file_path}.tex" # convert_tex_to_pdf "#{file_path}.tex" # send_file "#{file_path}.pdf" # end # def export_tex # file_name = "#{@web.address}-tex-#{@web.revised_at.strftime('%Y-%m-%d-%H-%M-%S')}.tex" # file_path = File.join(@wiki.storage_path, file_name) # export_web_to_tex(file_path) unless FileTest.exists?(file_path) # send_file file_path # end def feeds @rss_with_content_allowed = rss_with_content_allowed? # show the template end def list parse_category @page_names_that_are_wanted = @pages_in_category.wanted_pages @pages_that_are_orphaned = @pages_in_category.orphaned_pages end def recently_revised parse_category @pages_by_revision = @pages_in_category.by_revision @pages_by_day = Hash.new { |h, day| h[day] = [] } @pages_by_revision.each do |page| day = Date.new(page.revised_at.year, page.revised_at.month, page.revised_at.day) @pages_by_day[day] << page end end def atom_with_content if rss_with_content_allowed? render_atom(hide_description = false) else render :text => 'Atom feed with content for this web is blocked for security reasons. ' + 'The web is password-protected and not published', :status => 403, :layout => 'error' end end def atom_with_headlines render_atom(hide_description = true) end def search @query = params['query'] render(:text => "Your query string was not valid utf-8", :layout => 'error', :status => 400) and return unless @query.is_utf8? @title_results = @web.select { |page| page.name =~ /#{@query}/i }.sort @results = @web.select { |page| page.content =~ /#{@query}/i }.sort all_pages_found = (@results + @title_results).uniq if all_pages_found.size == 1 redirect_to_page(all_pages_found.first.name) end end # Within a single page -------------------------------------------------------- def cancel_edit @page.unlock redirect_to_page(@page_name) end def edit if @page.nil? or not @page_name.is_utf8? redirect_home elsif @page.locked?(Time.now) and not params['break_lock'] redirect_to :web => @web_name, :action => 'locked', :id => @page_name else @page.lock(Time.now, @author) end end def locked render(:text => 'Page name is not valid utf-8.', :status => 400, :layout => 'error') unless @page_name.is_utf8? # to template end def new render(:text => 'Page name is not valid utf-8.', :status => 400, :layout => 'error') unless @page_name.is_utf8? # to template end # def pdf # page = wiki.read_page(@web_name, @page_name) # safe_page_name = @page.name.gsub(/\W/, '') # file_name = "#{safe_page_name}-#{@web.address}-#{@page.revised_at.strftime('%Y-%m-%d-%H-%M-%S')}" # file_path = File.join(@wiki.storage_path, file_name) # # export_page_to_tex("#{file_path}.tex") unless FileTest.exists?("#{file_path}.tex") # # NB: this is _very_ slow # convert_tex_to_pdf("#{file_path}.tex") # send_file "#{file_path}.pdf" # end def print if @page.nil? redirect_home end @link_mode ||= :show @renderer = PageRenderer.new(@page.revisions.last) # to template end def published if not @web.published? render(:text => "Published version of web '#{@web_name}' is not available", :status => 404, :layout => 'error') return end @page_name ||= 'HomePage' @page ||= wiki.read_page(@web_name, @page_name) @link_mode ||= :publish render(:text => "Page '#{@page_name}' not found", :status => 404, :layout => 'error') and return unless @page @renderer = PageRenderer.new(@page.revisions.last) end def revision get_page_and_revision @show_diff = (params[:mode] == 'diff') @renderer = PageRenderer.new(@revision) end def rollback get_page_and_revision end def save render(:status => 404, :text => 'Undefined page name', :layout => 'error') and return if @page_name.nil? or not @page_name.is_utf8? unless (request.post? || ENV["RAILS_ENV"] == "test") headers['Allow'] = 'POST' render(:status => 405, :text => 'You must use an HTTP POST', :layout => 'error') return end author_name = params['author'] author_name = 'AnonymousCoward' if author_name =~ /^\s*$/ render(:text => "Your name was not valid utf-8", :layout => 'error', :status => 400) and return unless author_name.is_utf8? cookies['author'] = { :value => author_name, :expires => Time.utc(2030) } begin the_content = params['content'] filter_spam(the_content) unless the_content.is_utf8? if @page the_content = @page.content else the_content = '' end raise Instiki::ValidationError.new('Your content was not valid utf-8.') end if @page wiki.revise_page(@web_name, @page_name, the_content, Time.now, Author.new(author_name, remote_ip), PageRenderer.new) @page.unlock else wiki.write_page(@web_name, @page_name, the_content, Time.now, Author.new(author_name, remote_ip), PageRenderer.new) end redirect_to_page @page_name rescue Instiki::ValidationError => e flash[:error] = e.to_s logger.error e if @page @page.unlock redirect_to :action => 'edit', :web => @web_name, :id => @page_name, :content => the_content else redirect_to :action => 'new', :web => @web_name, :id => @page_name, :content => the_content end end end def show if @page begin @renderer = PageRenderer.new(@page.revisions.last) @show_diff = (params[:mode] == 'diff') render :action => 'page' # TODO this rescue should differentiate between errors due to rendering and errors in # the application itself (for application errors, it's better not to rescue the error at all) rescue => e logger.error e flash[:error] = e.to_s if in_a_web? redirect_to :action => 'edit', :web => @web_name, :id => @page_name else raise e end end else if not @page_name.nil? and @page_name.is_utf8? and not @page_name.empty? redirect_to :web => @web_name, :action => 'new', :id => @page_name else render :text => 'Page name is not specified', :status => 404, :layout => 'error' end end end def tex if @web.markup == :markdownMML or @web.markup == :markdownPNG or @web.markup == :markdown @tex_content = Maruku.new(@page.content).to_latex else @tex_content = 'TeX export only supported with the Markdown text filters.' end end def s5 if @web.markup == :markdownMML || @web.markup == :markdownPNG || @web.markup == :markdown my_rendered = PageRenderer.new(@page.revisions.last) @s5_content = my_rendered.display_s5 @s5_theme = my_rendered.s5_theme else @s5_content = "S5 not supported with this text filter" @s5_theme = "default" end end def html_ext if xhtml_enabled? && request.env.include?('HTTP_ACCEPT') && Mime::Type.parse(request.env["HTTP_ACCEPT"]).include?(Mime::XHTML) 'xhtml' else 'html' end end protected def do_caching? flash.empty? end def load_page @page_name = params['id'] @page = @wiki.read_page(@web_name, @page_name) if @page_name end private # def convert_tex_to_pdf(tex_path) # # TODO remove earlier PDF files with the same prefix # # TODO handle gracefully situation where pdflatex is not available # begin # wd = Dir.getwd # Dir.chdir(File.dirname(tex_path)) # logger.info `pdflatex --interaction=nonstopmode #{File.basename(tex_path)}` # ensure # Dir.chdir(wd) # end # end def export_page_to_tex(file_path) if @web.markup == :markdownMML || @web.markup == :markdownPNG @tex_content = Maruku.new(@page.content).to_latex else @tex_content = 'TeX export only supported with the Markdown text filters.' end File.open(file_path, 'w') { |f| f.write(render_to_string(:template => 'wiki/tex', :layout => 'tex')) } end def export_pages_as_zip(file_type, &block) file_prefix = "#{@web.address}-#{file_type}-" timestamp = @web.revised_at.strftime('%Y-%m-%d-%H-%M-%S') file_path = File.join(@wiki.storage_path, file_prefix + timestamp + '.zip') tmp_path = "#{file_path}.tmp" Zip::ZipOutputStream.open(tmp_path) do |zip_out| @web.select.by_name.each do |page| zip_out.put_next_entry("#{CGI.escape(page.name)}.#{file_type}") zip_out.puts(block.call(page)) end # add an index file, if exporting to HTML if file_type.to_s.downcase == html_ext zip_out.put_next_entry "index.#{html_ext}" zip_out.puts "" + "" end end FileUtils.rm_rf(Dir[File.join(@wiki.storage_path, file_prefix + '*.zip')]) FileUtils.mv(tmp_path, file_path) send_file file_path end # def export_web_to_tex(file_path) # if @web.markup == :markdownMML # @tex_content = Maruku.new(@page.content).to_latex # else # @tex_content = 'TeX export only supported with the Markdown text filters.' # end # @tex_content = table_of_contents(@web.page('HomePage').content, render_tex_web) # File.open(file_path, 'w') { |f| f.write(render_to_string(:template => 'wiki/tex_web', :layout => tex)) } # end def get_page_and_revision if params['rev'] @revision_number = params['rev'].to_i else @revision_number = @page.revisions.length end @revision = @page.revisions[@revision_number - 1] end def parse_category @categories = WikiReference.list_categories(@web).sort @category = params['category'] if @category @set_name = "category '#{@category}'" pages = WikiReference.pages_in_category(@web, @category).sort.map { |page_name| @web.page(page_name) } @pages_in_category = PageSet.new(@web, pages) else # no category specified, return all pages of the web @pages_in_category = @web.select_all.by_name @set_name = 'the web' end end def remote_ip ip = request.remote_ip logger.info(ip) ip.dup.gsub!(Regexp.union(Resolv::IPv4::Regex, Resolv::IPv6::Regex), '\0') || 'bogus address' end def render_atom(hide_description = false, limit = 15) @pages_by_revision = @web.select.by_revision.first(limit) @hide_description = hide_description @link_action = @web.password ? 'published' : 'show' render :action => 'atom' end def render_tex_web @web.select.by_name.inject({}) do |tex_web, page| if @web.markup == :markdownMML || @web.markup == :markdownPNG tex_web[page.name] = Maruku.new(page.content).to_latex else tex_web[page.name] = 'TeX export only supported with the Markdown text filters.' end tex_web end end def rss_with_content_allowed? @web.password.nil? or @web.published? end def truncate(text, length = 30, truncate_string = '...') if text.length > length then text[0..(length - 3)] + truncate_string else text end end def filter_spam(content) @@spam_patterns ||= load_spam_patterns @@spam_patterns.each do |pattern| raise Instiki::ValidationError.new("Your edit was blocked by spam filtering") if content =~ pattern end end def load_spam_patterns spam_patterns_file = "#{RAILS_ROOT}/config/spam_patterns.txt" if File.exists?(spam_patterns_file) File.readlines(spam_patterns_file).inject([]) { |patterns, line| patterns << Regexp.new(line.chomp, Regexp::IGNORECASE) } else [] end end end