require 'fileutils' require 'redcloth_for_tex' require 'parsedate' require 'zip/zip' class WikiController < ApplicationController before_filter :load_page caches_action :show, :published, :authors, :recently_revised, :list cache_sweeper :revision_sweeper layout 'default', :except => [:rss_feed, :rss_with_content, :rss_with_headlines, :tex, :export_tex, :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 export_html stylesheet = File.read(File.join(RAILS_ROOT, 'public', 'stylesheets', 'instiki.css')) export_pages_as_zip('html') do |page| renderer = PageRenderer.new(page.revisions.last) rendered_page = <<-EOL #{page.plain_name} in #{@web.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 rss_with_content if rss_with_content_allowed? render_rss(hide_description = false, *parse_rss_params) else render_text 'RSS feed with content for this web is blocked for security reasons. ' + 'The web is password-protected and not published', '403 Forbidden' end end def rss_with_headlines render_rss(hide_description = true, *parse_rss_params) end def search @query = params['query'] @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? 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 # to template end def new # 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) return end @page_name ||= 'HomePage' @page ||= wiki.read_page(@web_name, @page_name) render(:text => "Page '#{@page_name}' not found", :status => 404) 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') and return if @page_name.nil? unless (request.post? || ENV["RAILS_ENV"] == "test") headers['Allow'] = 'POST' render(:status => 405, :text => 'You must use an HTTP POST') return end author_name = params['author'] author_name = 'AnonymousCoward' if author_name =~ /^\s*$/ cookies['author'] = { :value => author_name, :expires => Time.utc(2030) } begin filter_spam(params['content']) if @page wiki.revise_page(@web_name, @page_name, params['content'], Time.now, Author.new(author_name, remote_ip), PageRenderer.new) @page.unlock else wiki.write_page(@web_name, @page_name, params['content'], Time.now, Author.new(author_name, remote_ip), PageRenderer.new) end redirect_to_page @page_name rescue => e flash[:error] = e logger.error e flash[:content] = params['content'] if @page @page.unlock redirect_to :action => 'edit', :web => @web_name, :id => @page_name else redirect_to :action => 'new', :web => @web_name, :id => @page_name 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.message 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 not @page_name.empty? redirect_to :web => @web_name, :action => 'new', :id => @page_name else render_text 'Page name is not specified', '404 Not Found' end end end def tex @tex_content = RedClothForTex.new(@page.content).to_tex end protected 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) tex File.open(file_path, 'w') { |f| f.write(render_to_string(:template => 'wiki/tex', :layout => false)) } 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' zip_out.put_next_entry 'index.html' 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) @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 => nil)) } 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 parse_rss_params if params.include? 'limit' limit = params['limit'].to_i rescue nil limit = nil if limit == 0 else limit = 15 end start_date = Time.local(*ParseDate::parsedate(params['start'])) rescue nil end_date = Time.local(*ParseDate::parsedate(params['end'])) rescue nil [ limit, start_date, end_date ] end def remote_ip ip = request.remote_ip logger.info(ip) ip end def render_rss(hide_description = false, limit = 15, start_date = nil, end_date = nil) if limit && !start_date && !end_date @pages_by_revision = @web.select.by_revision.first(limit) else @pages_by_revision = @web.select.by_revision @pages_by_revision.reject! { |page| page.revised_at < start_date } if start_date @pages_by_revision.reject! { |page| page.revised_at > end_date } if end_date end @hide_description = hide_description @link_action = @web.password ? 'published' : 'show' render :action => 'rss_feed' end def render_tex_web @web.select.by_name.inject({}) do |tex_web, page| tex_web[page.name] = RedClothForTex.new(page.content).to_tex 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 "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