jro_apps/redmine Commit - r9534:e4332ba35fea

Code cleanup....

Jean-Philippe Lang -

r9534:e4332ba35fea

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r9534:e4332ba35fea

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app/models/attachment.rb +1 -1

              # Redmine - project management software
              # Copyright (C) 2006-2012  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 "digest/md5"
              class Attachment < ActiveRecord::Base
                belongs_to :container, :polymorphic => true
                belongs_to :author, :class_name => "User", :foreign_key => "author_id"
                validates_presence_of :filename, :author
                validates_length_of :filename, :maximum => 255
                validates_length_of :disk_filename, :maximum => 255
                validate :validate_max_file_size
                acts_as_event :title => :filename,
                              :url => Proc.new {|o| {:controller => 'attachments', :action => 'download', :id => o.id, :filename => o.filename}}
                acts_as_activity_provider :type => 'files',
                                          :permission => :view_files,
                                          :author_key => :author_id,
                                          :find_options => {:select => "#{Attachment.table_name}.*",
                                                            :joins => "LEFT JOIN #{Version.table_name} ON #{Attachment.table_name}.container_type='Version' AND #{Version.table_name}.id = #{Attachment.table_name}.container_id " +
                                                                      "LEFT JOIN #{Project.table_name} ON #{Version.table_name}.project_id = #{Project.table_name}.id OR ( #{Attachment.table_name}.container_type='Project' AND #{Attachment.table_name}.container_id = #{Project.table_name}.id )"}
                acts_as_activity_provider :type => 'documents',
                                          :permission => :view_documents,
                                          :author_key => :author_id,
                                          :find_options => {:select => "#{Attachment.table_name}.*",
                                                            :joins => "LEFT JOIN #{Document.table_name} ON #{Attachment.table_name}.container_type='Document' AND #{Document.table_name}.id = #{Attachment.table_name}.container_id " +
                                                                      "LEFT JOIN #{Project.table_name} ON #{Document.table_name}.project_id = #{Project.table_name}.id"}
                cattr_accessor :storage_path
                @@storage_path = Redmine::Configuration['attachments_storage_path'] || File.join(Rails.root, "files")
                before_save :files_to_final_location
                after_destroy :delete_from_disk
                # Returns an unsaved copy of the attachment
                def copy(attributes=nil)
                  copy = self.class.new
                  copy.attributes = self.attributes.dup.except("id", "downloads")
                  copy.attributes = attributes if attributes
                  copy
                end
                def validate_max_file_size
                  if @temp_file && self.filesize > Setting.attachment_max_size.to_i.kilobytes
                    errors.add(:base, l(:error_attachment_too_big, :max_size => Setting.attachment_max_size.to_i.kilobytes))
                  end
                end
                def file=(incoming_file)
                  unless incoming_file.nil?
                    @temp_file = incoming_file
                    if @temp_file.size > 0
                      if @temp_file.respond_to?(:original_filename)
                        self.filename = @temp_file.original_filename
                        self.filename.force_encoding("UTF-8") if filename.respond_to?(:force_encoding)
                      end
                      if @temp_file.respond_to?(:content_type)
                        self.content_type = @temp_file.content_type.to_s.chomp
                      end
                      if content_type.blank? && filename.present?
                        self.content_type = Redmine::MimeType.of(filename)
                      end
                      self.filesize = @temp_file.size
                    end
                  end
                end
                def file
                  nil
                end
                def filename=(arg)
                  write_attribute :filename, sanitize_filename(arg.to_s)
                  if new_record? && disk_filename.blank?
                    self.disk_filename = Attachment.disk_filename(filename)
                  end
                  filename
                end
                # Copies the temporary file to its final location
                # and computes its MD5 hash
                def files_to_final_location
                  if @temp_file && (@temp_file.size > 0)
                    logger.info("Saving attachment '#{self.diskfile}' (#{@temp_file.size} bytes)")
                    md5 = Digest::MD5.new
                    File.open(diskfile, "wb") do |f|
                      if @temp_file.respond_to?(:read)
                        buffer = ""
                        while (buffer = @temp_file.read(8192))
                          f.write(buffer)
                          md5.update(buffer)
                        end
                      else
                        f.write(@temp_file)
                        md5.update(@temp_file)
                      end
                    end
                    self.digest = md5.hexdigest
                  end
                  @temp_file = nil
                  # Don't save the content type if it's longer than the authorized length
                  if self.content_type && self.content_type.length > 255
                    self.content_type = nil
                  end
                end
                # Deletes the file from the file system if it's not referenced by other attachments
                def delete_from_disk
-                 if Attachment.first(:conditions => ["disk_filename = ? AND id <> ?", disk_filename, id]).nil?
+                 if Attachment.where("disk_filename = ? AND id <> ?", disk_filename, id).empty?
                    delete_from_disk!
                  end
                end
                # Returns file's location on disk
                def diskfile
                  File.join(self.class.storage_path, disk_filename.to_s)
                end
                def increment_download
                  increment!(:downloads)
                end
                def project
                  container.try(:project)
                end
                def visible?(user=User.current)
                  container && container.attachments_visible?(user)
                end
                def deletable?(user=User.current)
                  container && container.attachments_deletable?(user)
                end
                def image?
                  self.filename =~ /\.(bmp|gif|jpg|jpe|jpeg|png)$/i
                end
                def is_text?
                  Redmine::MimeType.is_type?('text', filename)
                end
                def is_diff?
                  self.filename =~ /\.(patch|diff)$/i
                end
                # Returns true if the file is readable
                def readable?
                  File.readable?(diskfile)
                end
                # Returns the attachment token
                def token
                  "#{id}.#{digest}"
                end
                # Finds an attachment that matches the given token and that has no container
                def self.find_by_token(token)
                  if token.to_s =~ /^(\d+)\.([0-9a-f]+)$/
                    attachment_id, attachment_digest = $1, $2
                    attachment = Attachment.where(:id => attachment_id, :digest => attachment_digest).first
                    if attachment && attachment.container.nil?
                      attachment
                    end
                  end
                end
                # Bulk attaches a set of files to an object
                #
                # Returns a Hash of the results:
                # :files => array of the attached files
                # :unsaved => array of the files that could not be attached
                def self.attach_files(obj, attachments)
                  result = obj.save_attachments(attachments, User.current)
                  obj.attach_saved_attachments
                  result
                end
                def self.latest_attach(attachments, filename)
                  attachments.sort_by(&:created_on).reverse.detect {
                    |att| att.filename.downcase == filename.downcase
                   }
                end
                def self.prune(age=1.day)
                  Attachment.where("created_on < ? AND (container_type IS NULL OR container_type = '')", Time.now - age).destroy_all
                end
                private
                # Physically deletes the file from the file system
                def delete_from_disk!
                  if disk_filename.present? && File.exist?(diskfile)
                    File.delete(diskfile)
                  end
                end
                def sanitize_filename(value)
                  # get only the filename, not the whole path
                  just_filename = value.gsub(/^.*(\\|\/)/, '')
                  # Finally, replace invalid characters with underscore
                  @filename = just_filename.gsub(/[\/\?\%\*\:\|\"\'<>]+/, '_')
                end
                # Returns an ASCII or hashed filename
                def self.disk_filename(filename)
                  timestamp = DateTime.now.strftime("%y%m%d%H%M%S")
                  ascii = ''
                  if filename =~ %r{^[a-zA-Z0-9_\.\-]*$}
                    ascii = filename
                  else
                    ascii = Digest::MD5.hexdigest(filename)
                    # keep the extension if any
                    ascii << $1 if filename =~ %r{(\.[a-zA-Z0-9]+)$}
                  end
                  while File.exist?(File.join(@@storage_path, "#{timestamp}_#{ascii}"))
                    timestamp.succ!
                  end
                  "#{timestamp}_#{ascii}"
                end
              end

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