SoundSoftware Code Site

# Redmine - project management software

# Copyright (C) 2006-2013  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.

class AttachmentsController < ApplicationController

  before_filter :find_project, :except => :upload

  before_filter :file_readable, :read_authorize, :only => [:show, :download, :thumbnail]

  before_filter :delete_authorize, :only => :destroy

  before_filter :authorize_global, :only => :upload

  before_filter :active_authorize, :only => :toggle_active

  include AttachmentsHelper

  helper :attachments

  accept_api_auth :show, :download, :upload

  def show

    respond_to do |format|

      format.html {

        if @attachment.is_diff?

          @diff = File.new(@attachment.diskfile, "rb").read

          @diff_type = params[:type] || User.current.pref[:diff_type] || 'inline'

          @diff_type = 'inline' unless %w(inline sbs).include?(@diff_type)

          # Save diff type as user preference

          if User.current.logged? && @diff_type != User.current.pref[:diff_type]

            User.current.pref[:diff_type] = @diff_type

            User.current.preference.save

          end

          render :action => 'diff'

        elsif @attachment.is_text? && @attachment.filesize <= Setting.file_max_size_displayed.to_i.kilobyte

          @content = File.new(@attachment.diskfile, "rb").read

          render :action => 'file'

        else

          download

        end

      }

      format.api

    end

  end

  def download

    # cc: formerly this happened only if "@attachment.container.is_a?(Version)"

    # or Project. Not good for us, we want to tally all downloads [by humans]

    if not user_is_search_bot?

      @attachment.increment_download

    end

    if stale?(:etag => @attachment.digest)

      # images are sent inline

      send_file @attachment.diskfile, :filename => filename_for_content_disposition(@attachment.filename),

                                      :type => detect_content_type(@attachment),

                                      :disposition => (@attachment.image? ? 'inline' : 'attachment')

    end

  end

  def thumbnail

    if @attachment.thumbnailable? && thumbnail = @attachment.thumbnail(:size => params[:size])

      if stale?(:etag => thumbnail)

        send_file thumbnail,

          :filename => filename_for_content_disposition(@attachment.filename),

          :type => detect_content_type(@attachment),

          :disposition => 'inline'

      end

    else

      # No thumbnail for the attachment or thumbnail could not be created

      render :nothing => true, :status => 404

    end

  end

  def upload

    # Make sure that API users get used to set this content type

    # as it won't trigger Rails' automatic parsing of the request body for parameters

    unless request.content_type == 'application/octet-stream'

      render :nothing => true, :status => 406

      return

    end

    @attachment = Attachment.new(:file => request.raw_post)

    @attachment.author = User.current

    @attachment.filename = params[:filename].presence || Redmine::Utils.random_hex(16)

    saved = @attachment.save

    respond_to do |format|

      format.js

      format.api {

        if saved

          render :action => 'upload', :status => :created

        else

          render_validation_errors(@attachment)

        end

      }

    end

  end

  def destroy

    if @attachment.container.respond_to?(:init_journal)

      @attachment.container.init_journal(User.current)

    end

    if @attachment.container

      # Make sure association callbacks are called

      @attachment.container.attachments.delete(@attachment)

    else

      @attachment.destroy

    end

    respond_to do |format|

      format.html { redirect_to_referer_or project_path(@project) }

      format.js

    end

  end

  def toggle_active

    @attachment.active = !@attachment.active?

    @attachment.save!

    respond_to do |format|

      format.js

    end

  end

private

  def find_project

    @attachment = Attachment.find(params[:id])

    # Show 404 if the filename in the url is wrong

    raise ActiveRecord::RecordNotFound if params[:filename] && params[:filename] != @attachment.filename

    @project = @attachment.project

  rescue ActiveRecord::RecordNotFound

    render_404

  end

  # Checks that the file exists and is readable

  def file_readable

    if @attachment.readable?

      true

    else

      logger.error "Cannot send attachment, #{@attachment.diskfile} does not exist or is unreadable."

      render_404

    end

  end

  def read_authorize

    @attachment.visible? ? true : deny_access

  end

  def delete_authorize

    @attachment.deletable? ? true : deny_access

  end

  def active_authorize

    true

  end

  def detect_content_type(attachment)

    content_type = attachment.content_type

    if content_type.blank?

      content_type = Redmine::MimeType.of(attachment.filename)

    end

    content_type.to_s

  end

end