view app/controllers/application_controller.rb @ 1082:997f6d7738f7 bug_531

In repo controller entry action, show the page for the file even if it's binary (so user still has access to history etc links). This makes it possible to use the entry action as the default when a file is clicked on

# Redmine - project management software
# Copyright (C) 2006-2011  Jean-Philippe Lang
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

require 'uri'
require 'cgi'

class Unauthorized < Exception; end

class ApplicationController < ActionController::Base
  include Redmine::I18n

  layout 'base'
  exempt_from_layout 'builder', 'rsb'

  protect_from_forgery
  def handle_unverified_request
    super
    cookies.delete(:autologin)
  end
  # Remove broken cookie after upgrade from 0.8.x (#4292)
  # See https://rails.lighthouseapp.com/projects/8994/tickets/3360
  # TODO: remove it when Rails is fixed
  before_filter :delete_broken_cookies
  def delete_broken_cookies
    if cookies['_redmine_session'] && cookies['_redmine_session'] !~ /--/
      cookies.delete '_redmine_session'
      redirect_to home_path
      return false
    end
  end

  before_filter :user_setup, :check_if_login_required, :set_localization
  filter_parameter_logging :password

  rescue_from ActionController::InvalidAuthenticityToken, :with => :invalid_authenticity_token
  rescue_from ::Unauthorized, :with => :deny_access

  include Redmine::Search::Controller
  include Redmine::MenuManager::MenuController
  helper Redmine::MenuManager::MenuHelper

  Redmine::Scm::Base.all.each do |scm|
    require_dependency "repository/#{scm.underscore}"
  end

  def user_setup
    # Check the settings cache for each request
    Setting.check_cache
    # Find the current user
    User.current = find_current_user
  end

  # Returns the current user or nil if no user is logged in
  # and starts a session if needed
  def find_current_user
    if session[:user_id]
      # existing session
      (User.active.find(session[:user_id]) rescue nil)
    elsif cookies[:autologin] && Setting.autologin?
      # auto-login feature starts a new session
      user = User.try_to_autologin(cookies[:autologin])
      session[:user_id] = user.id if user
      user
    elsif params[:format] == 'atom' && params[:key] && request.get? && accept_rss_auth?
      # RSS key authentication does not start a session
      User.find_by_rss_key(params[:key])
    elsif Setting.rest_api_enabled? && accept_api_auth?
      if (key = api_key_from_request)
        # Use API key
        User.find_by_api_key(key)
      else
        # HTTP Basic, either username/password or API key/random
        authenticate_with_http_basic do |username, password|
          User.try_to_login(username, password) || User.find_by_api_key(username)
        end
      end
    end
  end

  # Sets the logged in user
  def logged_user=(user)
    reset_session
    if user && user.is_a?(User)
      User.current = user
      session[:user_id] = user.id
    else
      User.current = User.anonymous
    end
  end

  # check if login is globally required to access the application
  def check_if_login_required
    # no check needed if user is already logged in
    return true if User.current.logged?
    require_login if Setting.login_required?
  end

  def set_localization
    lang = nil
    if User.current.logged?
      lang = find_language(User.current.language)
    end
    if lang.nil? && request.env['HTTP_ACCEPT_LANGUAGE']
      accept_lang = parse_qvalues(request.env['HTTP_ACCEPT_LANGUAGE']).first
      if !accept_lang.blank?
        accept_lang = accept_lang.downcase
        lang = find_language(accept_lang) || find_language(accept_lang.split('-').first)
      end
    end
    lang ||= Setting.default_language
    set_language_if_valid(lang)
  end

  def require_login
    if !User.current.logged?
      # Extract only the basic url parameters on non-GET requests
      if request.get?
        url = url_for(params)
      else
        url = url_for(:controller => params[:controller], :action => params[:action], :id => params[:id], :project_id => params[:project_id])
      end
      respond_to do |format|
        format.html { redirect_to :controller => "account", :action => "login", :back_url => url }
        format.atom { redirect_to :controller => "account", :action => "login", :back_url => url }
        format.xml  { head :unauthorized, 'WWW-Authenticate' => 'Basic realm="Redmine API"' }
        format.js   { head :unauthorized, 'WWW-Authenticate' => 'Basic realm="Redmine API"' }
        format.json { head :unauthorized, 'WWW-Authenticate' => 'Basic realm="Redmine API"' }
      end
      return false
    end
    true
  end

  def require_admin
    return unless require_login
    if !User.current.admin?
      render_403
      return false
    end
    true
  end

  def deny_access
    User.current.logged? ? render_403 : require_login
  end

  # Authorize the user for the requested action
  def authorize(ctrl = params[:controller], action = params[:action], global = false)
    allowed = User.current.allowed_to?({:controller => ctrl, :action => action}, @project || @projects, :global => global)
    if allowed
      true
    else
      if @project && @project.archived?
        render_403 :message => :notice_not_authorized_archived_project
      else
        deny_access
      end
    end
  end

  # Authorize the user for the requested action outside a project
  def authorize_global(ctrl = params[:controller], action = params[:action], global = true)
    authorize(ctrl, action, global)
  end

  # Find project of id params[:id]
  def find_project
    @project = Project.find(params[:id])
  rescue ActiveRecord::RecordNotFound
    User.current.logged? ? render_404 : require_login
  end

  # Find project of id params[:project_id]
  def find_project_by_project_id
    @project = Project.find(params[:project_id])
  rescue ActiveRecord::RecordNotFound
    User.current.logged? ? render_404 : require_login
  end

  # Find a project based on params[:project_id]
  # TODO: some subclasses override this, see about merging their logic
  def find_optional_project
    @project = Project.find(params[:project_id]) unless params[:project_id].blank?
    allowed = User.current.allowed_to?({:controller => params[:controller], :action => params[:action]}, @project, :global => true)
    allowed ? true : deny_access
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  # Finds and sets @project based on @object.project
  def find_project_from_association
    render_404 unless @object.present?

    @project = @object.project
  end

  def find_model_object
    model = self.class.read_inheritable_attribute('model_object')
    if model
      @object = model.find(params[:id])
      self.instance_variable_set('@' + controller_name.singularize, @object) if @object
    end
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  def self.model_object(model)
    write_inheritable_attribute('model_object', model)
  end

  # Filter for bulk issue operations
  def find_issues
    @issues = Issue.find_all_by_id(params[:id] || params[:ids])
    raise ActiveRecord::RecordNotFound if @issues.empty?
    if @issues.detect {|issue| !issue.visible?}
      deny_access
      return
    end
    @projects = @issues.collect(&:project).compact.uniq
    @project = @projects.first if @projects.size == 1
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  # Check if project is unique before bulk operations
  def check_project_uniqueness
    unless @project
      # TODO: let users bulk edit/move/destroy issues from different projects
      render_error 'Can not bulk edit/move/destroy issues from different projects'
      return false
    end
  end

  # make sure that the user is a member of the project (or admin) if project is private
  # used as a before_filter for actions that do not require any particular permission on the project
  def check_project_privacy
    if @project && @project.active?
      if @project.is_public? || User.current.member_of?(@project) || User.current.admin?
        true
      else
        deny_access
      end
    else
      @project = nil
      render_404
      false
    end
  end

  def back_url
    params[:back_url] || request.env['HTTP_REFERER']
  end

  def redirect_back_or_default(default)
    back_url = CGI.unescape(params[:back_url].to_s)
    if !back_url.blank?
      begin
        uri = URI.parse(back_url)
        # do not redirect user to another host or to the login or register page
        if (uri.relative? || (uri.host == request.host)) && !uri.path.match(%r{/(login|account/register)})
          # soundsoftware: if back_url is the home page,
          # change it to My Page (#125)
          if (uri.path == home_path)
            if (uri.path =~ /\/$/)
              uri.path = uri.path + "my"
            else
              uri.path = uri.path + "/my"
            end
          end
          # soundsoftware: if login page is https but back_url http,
          # switch back_url to https to ensure cookie validity (#83)
          if (uri.scheme == "http") && (URI.parse(request.url).scheme == "https")
            uri.scheme = "https"
          end
          back_url = uri.to_s
          redirect_to(back_url)
          return
        end
      rescue URI::InvalidURIError
        # redirect to default
      end
    end
    redirect_to default
    false
  end

  def render_403(options={})
    @project = nil
    render_error({:message => :notice_not_authorized, :status => 403}.merge(options))
    return false
  end

  def render_404(options={})
    render_error({:message => :notice_file_not_found, :status => 404}.merge(options))
    return false
  end

  # Renders an error response
  def render_error(arg)
    arg = {:message => arg} unless arg.is_a?(Hash)

    @message = arg[:message]
    @message = l(@message) if @message.is_a?(Symbol)
    @status = arg[:status] || 500

    respond_to do |format|
      format.html {
        render :template => 'common/error', :layout => use_layout, :status => @status
      }
      format.atom { head @status }
      format.xml { head @status }
      format.js { head @status }
      format.json { head @status }
    end
  end
  
  # Filter for actions that provide an API response
  # but have no HTML representation for non admin users
  def require_admin_or_api_request
    return true if api_request?
    if User.current.admin?
      true
    elsif User.current.logged?
      render_error(:status => 406)
    else
      deny_access
    end
  end

  # Picks which layout to use based on the request
  #
  # @return [boolean, string] name of the layout to use or false for no layout
  def use_layout
    request.xhr? ? false : 'base'
  end

  def invalid_authenticity_token
    if api_request?
      logger.error "Form authenticity token is missing or is invalid. API calls must include a proper Content-type header (text/xml or text/json)."
    end
    render_error "Invalid form authenticity token.  Perhaps your session has timed out; try reloading the form and entering your details again."
  end

  def render_feed(items, options={})
    @items = items || []
    @items.sort! {|x,y| y.event_datetime <=> x.event_datetime }
    @items = @items.slice(0, Setting.feeds_limit.to_i)
    @title = options[:title] || Setting.app_title
    render :template => "common/feed.atom", :layout => false,
           :content_type => 'application/atom+xml'
  end

  # TODO: remove in Redmine 1.4
  def self.accept_key_auth(*actions)
    ActiveSupport::Deprecation.warn "ApplicationController.accept_key_auth is deprecated and will be removed in Redmine 1.4. Use accept_rss_auth (or accept_api_auth) instead."
    accept_rss_auth(*actions)
  end

  # TODO: remove in Redmine 1.4
  def accept_key_auth_actions
    ActiveSupport::Deprecation.warn "ApplicationController.accept_key_auth_actions is deprecated and will be removed in Redmine 1.4. Use accept_rss_auth (or accept_api_auth) instead."
    self.class.accept_rss_auth
  end

  def self.accept_rss_auth(*actions)
    if actions.any?
      write_inheritable_attribute('accept_rss_auth_actions', actions)
    else
      read_inheritable_attribute('accept_rss_auth_actions') || []
    end
  end

  def accept_rss_auth?(action=action_name)
    self.class.accept_rss_auth.include?(action.to_sym)
  end

  def self.accept_api_auth(*actions)
    if actions.any?
      write_inheritable_attribute('accept_api_auth_actions', actions)
    else
      read_inheritable_attribute('accept_api_auth_actions') || []
    end
  end

  def accept_api_auth?(action=action_name)
    self.class.accept_api_auth.include?(action.to_sym)
  end

  # Returns the number of objects that should be displayed
  # on the paginated list
  def per_page_option
    per_page = nil
    if params[:per_page] && Setting.per_page_options_array.include?(params[:per_page].to_s.to_i)
      per_page = params[:per_page].to_s.to_i
      session[:per_page] = per_page
    elsif session[:per_page]
      per_page = session[:per_page]
    else
      per_page = Setting.per_page_options_array.first || 25
    end
    per_page
  end

  # Returns offset and limit used to retrieve objects
  # for an API response based on offset, limit and page parameters
  def api_offset_and_limit(options=params)
    if options[:offset].present?
      offset = options[:offset].to_i
      if offset < 0
        offset = 0
      end
    end
    limit = options[:limit].to_i
    if limit < 1
      limit = 25
    elsif limit > 100
      limit = 100
    end
    if offset.nil? && options[:page].present?
      offset = (options[:page].to_i - 1) * limit
      offset = 0 if offset < 0
    end
    offset ||= 0

    [offset, limit]
  end

  # qvalues http header parser
  # code taken from webrick
  def parse_qvalues(value)
    tmp = []
    if value
      parts = value.split(/,\s*/)
      parts.each {|part|
        if m = %r{^([^\s,]+?)(?:;\s*q=(\d+(?:\.\d+)?))?$}.match(part)
          val = m[1]
          q = (m[2] or 1).to_f
          tmp.push([val, q])
        end
      }
      tmp = tmp.sort_by{|val, q| -q}
      tmp.collect!{|val, q| val}
    end
    return tmp
  rescue
    nil
  end

  # Returns a string that can be used as filename value in Content-Disposition header
  def filename_for_content_disposition(name)
    request.env['HTTP_USER_AGENT'] =~ %r{MSIE} ? ERB::Util.url_encode(name) : name
  end

  def api_request?
    %w(xml json).include? params[:format]
  end

  # Returns the API key present in the request
  def api_key_from_request
    if params[:key].present?
      params[:key]
    elsif request.headers["X-Redmine-API-Key"].present?
      request.headers["X-Redmine-API-Key"]
    end
  end

  # Renders a warning flash if obj has unsaved attachments
  def render_attachment_warning_if_needed(obj)
    flash[:warning] = l(:warning_attachments_not_saved, obj.unsaved_attachments.size) if obj.unsaved_attachments.present?
  end

  # Sets the `flash` notice or error based the number of issues that did not save
  #
  # @param [Array, Issue] issues all of the saved and unsaved Issues
  # @param [Array, Integer] unsaved_issue_ids the issue ids that were not saved
  def set_flash_from_bulk_issue_save(issues, unsaved_issue_ids)
    if unsaved_issue_ids.empty?
      flash[:notice] = l(:notice_successful_update) unless issues.empty?
    else
      flash[:error] = l(:notice_failed_to_save_issues,
                        :count => unsaved_issue_ids.size,
                        :total => issues.size,
                        :ids => '#' + unsaved_issue_ids.join(', #'))
    end
  end

  # Rescues an invalid query statement. Just in case...
  def query_statement_invalid(exception)
    logger.error "Query::StatementInvalid: #{exception.message}" if logger
    session.delete(:query)
    sort_clear if respond_to?(:sort_clear)
    render_error "An error occurred while executing the query and has been logged. Please report this error to your Redmine administrator."
  end

  # Renders API response on validation failure
  def render_validation_errors(object)
    options = { :status => :unprocessable_entity, :layout => false }
    options.merge!(case params[:format]
      when 'xml';  { :xml =>  object.errors }
      when 'json'; { :json => {'errors' => object.errors} } # ActiveResource client compliance
      else
        raise "Unknown format #{params[:format]} in #render_validation_errors"
      end
    )
    render options
  end

  # Overrides #default_template so that the api template
  # is used automatically if it exists
  def default_template(action_name = self.action_name)
    if api_request?
      begin
        return self.view_paths.find_template(default_template_name(action_name), 'api')
      rescue ::ActionView::MissingTemplate
        # the api template was not found
        # fallback to the default behaviour
      end
    end
    super
  end

  # Overrides #pick_layout so that #render with no arguments
  # doesn't use the layout for api requests
  def pick_layout(*args)
    api_request? ? nil : super
  end
end