@@ -1,326 +1,326 | |||
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1 | 1 | # Redmine - project management software |
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2 | 2 | # Copyright (C) 2006-2013 Jean-Philippe Lang |
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3 | 3 | # |
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4 | 4 | # This program is free software; you can redistribute it and/or |
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5 | 5 | # modify it under the terms of the GNU General Public License |
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6 | 6 | # as published by the Free Software Foundation; either version 2 |
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7 | 7 | # of the License, or (at your option) any later version. |
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8 | 8 | # |
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9 | 9 | # This program is distributed in the hope that it will be useful, |
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10 | 10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | 11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 | 12 | # GNU General Public License for more details. |
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13 | 13 | # |
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14 | 14 | # You should have received a copy of the GNU General Public License |
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15 | 15 | # along with this program; if not, write to the Free Software |
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16 | 16 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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17 | 17 | |
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18 | 18 | require "digest/md5" |
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19 | 19 | require "fileutils" |
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20 | 20 | |
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21 | 21 | class Attachment < ActiveRecord::Base |
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22 | 22 | belongs_to :container, :polymorphic => true |
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23 | 23 | belongs_to :author, :class_name => "User", :foreign_key => "author_id" |
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24 | 24 | |
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25 | 25 | validates_presence_of :filename, :author |
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26 | 26 | validates_length_of :filename, :maximum => 255 |
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27 | 27 | validates_length_of :disk_filename, :maximum => 255 |
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28 | 28 | validates_length_of :description, :maximum => 255 |
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29 | 29 | validate :validate_max_file_size |
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30 | 30 | |
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31 | 31 | acts_as_event :title => :filename, |
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32 | 32 | :url => Proc.new {|o| {:controller => 'attachments', :action => 'download', :id => o.id, :filename => o.filename}} |
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33 | 33 | |
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34 | 34 | acts_as_activity_provider :type => 'files', |
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35 | 35 | :permission => :view_files, |
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36 | 36 | :author_key => :author_id, |
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37 | 37 | :find_options => {:select => "#{Attachment.table_name}.*", |
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38 | 38 | :joins => "LEFT JOIN #{Version.table_name} ON #{Attachment.table_name}.container_type='Version' AND #{Version.table_name}.id = #{Attachment.table_name}.container_id " + |
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39 | 39 | "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 )"} |
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40 | 40 | |
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41 | 41 | acts_as_activity_provider :type => 'documents', |
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42 | 42 | :permission => :view_documents, |
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43 | 43 | :author_key => :author_id, |
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44 | 44 | :find_options => {:select => "#{Attachment.table_name}.*", |
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45 | 45 | :joins => "LEFT JOIN #{Document.table_name} ON #{Attachment.table_name}.container_type='Document' AND #{Document.table_name}.id = #{Attachment.table_name}.container_id " + |
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46 | 46 | "LEFT JOIN #{Project.table_name} ON #{Document.table_name}.project_id = #{Project.table_name}.id"} |
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47 | 47 | |
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48 | 48 | cattr_accessor :storage_path |
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49 | 49 | @@storage_path = Redmine::Configuration['attachments_storage_path'] || File.join(Rails.root, "files") |
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50 | 50 | |
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51 | 51 | cattr_accessor :thumbnails_storage_path |
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52 | 52 | @@thumbnails_storage_path = File.join(Rails.root, "tmp", "thumbnails") |
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53 | 53 | |
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54 | 54 | before_save :files_to_final_location |
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55 | 55 | after_destroy :delete_from_disk |
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56 | 56 | |
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57 | 57 | # Returns an unsaved copy of the attachment |
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58 | 58 | def copy(attributes=nil) |
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59 | 59 | copy = self.class.new |
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60 | 60 | copy.attributes = self.attributes.dup.except("id", "downloads") |
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61 | 61 | copy.attributes = attributes if attributes |
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62 | 62 | copy |
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63 | 63 | end |
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64 | 64 | |
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65 | 65 | def validate_max_file_size |
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66 | 66 | if @temp_file && self.filesize > Setting.attachment_max_size.to_i.kilobytes |
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67 | 67 | errors.add(:base, l(:error_attachment_too_big, :max_size => Setting.attachment_max_size.to_i.kilobytes)) |
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68 | 68 | end |
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69 | 69 | end |
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70 | 70 | |
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71 | 71 | def file=(incoming_file) |
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72 | 72 | unless incoming_file.nil? |
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73 | 73 | @temp_file = incoming_file |
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74 | 74 | if @temp_file.size > 0 |
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75 | 75 | if @temp_file.respond_to?(:original_filename) |
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76 | 76 | self.filename = @temp_file.original_filename |
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77 | 77 | self.filename.force_encoding("UTF-8") if filename.respond_to?(:force_encoding) |
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78 | 78 | end |
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79 | 79 | if @temp_file.respond_to?(:content_type) |
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80 | 80 | self.content_type = @temp_file.content_type.to_s.chomp |
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81 | 81 | end |
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82 | 82 | if content_type.blank? && filename.present? |
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83 | 83 | self.content_type = Redmine::MimeType.of(filename) |
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84 | 84 | end |
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85 | 85 | self.filesize = @temp_file.size |
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86 | 86 | end |
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87 | 87 | end |
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88 | 88 | end |
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89 | 89 | |
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90 | 90 | def file |
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91 | 91 | nil |
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92 | 92 | end |
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93 | 93 | |
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94 | 94 | def filename=(arg) |
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95 | 95 | write_attribute :filename, sanitize_filename(arg.to_s) |
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96 | 96 | filename |
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97 | 97 | end |
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98 | 98 | |
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99 | 99 | # Copies the temporary file to its final location |
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100 | 100 | # and computes its MD5 hash |
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101 | 101 | def files_to_final_location |
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102 | 102 | if @temp_file && (@temp_file.size > 0) |
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103 | 103 | self.disk_directory = target_directory |
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104 | 104 | self.disk_filename = Attachment.disk_filename(filename, disk_directory) |
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105 | 105 | logger.info("Saving attachment '#{self.diskfile}' (#{@temp_file.size} bytes)") |
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106 | 106 | path = File.dirname(diskfile) |
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107 | 107 | unless File.directory?(path) |
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108 | 108 | FileUtils.mkdir_p(path) |
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109 | 109 | end |
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110 | 110 | md5 = Digest::MD5.new |
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111 | 111 | File.open(diskfile, "wb") do |f| |
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112 | 112 | if @temp_file.respond_to?(:read) |
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113 | 113 | buffer = "" |
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114 | 114 | while (buffer = @temp_file.read(8192)) |
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115 | 115 | f.write(buffer) |
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116 | 116 | md5.update(buffer) |
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117 | 117 | end |
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118 | 118 | else |
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119 | 119 | f.write(@temp_file) |
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120 | 120 | md5.update(@temp_file) |
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121 | 121 | end |
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122 | 122 | end |
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123 | 123 | self.digest = md5.hexdigest |
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124 | 124 | end |
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125 | 125 | @temp_file = nil |
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126 | 126 | # Don't save the content type if it's longer than the authorized length |
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127 | 127 | if self.content_type && self.content_type.length > 255 |
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128 | 128 | self.content_type = nil |
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129 | 129 | end |
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130 | 130 | end |
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131 | 131 | |
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132 | 132 | # Deletes the file from the file system if it's not referenced by other attachments |
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133 | 133 | def delete_from_disk |
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134 | 134 | if Attachment.where("disk_filename = ? AND id <> ?", disk_filename, id).empty? |
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135 | 135 | delete_from_disk! |
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136 | 136 | end |
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137 | 137 | end |
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138 | 138 | |
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139 | 139 | # Returns file's location on disk |
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140 | 140 | def diskfile |
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141 | 141 | File.join(self.class.storage_path, disk_directory.to_s, disk_filename.to_s) |
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142 | 142 | end |
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143 | 143 | |
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144 | 144 | def title |
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145 | 145 | title = filename.to_s |
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146 | 146 | if description.present? |
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147 | 147 | title << " (#{description})" |
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148 | 148 | end |
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149 | 149 | title |
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150 | 150 | end |
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151 | 151 | |
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152 | 152 | def increment_download |
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153 | 153 | increment!(:downloads) |
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154 | 154 | end |
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155 | 155 | |
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156 | 156 | def project |
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157 | 157 | container.try(:project) |
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158 | 158 | end |
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159 | 159 | |
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160 | 160 | def visible?(user=User.current) |
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161 | 161 | if container_id |
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162 | 162 | container && container.attachments_visible?(user) |
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163 | 163 | else |
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164 | 164 | author == user |
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165 | 165 | end |
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166 | 166 | end |
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167 | 167 | |
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168 | 168 | def deletable?(user=User.current) |
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169 | 169 | if container_id |
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170 | 170 | container && container.attachments_deletable?(user) |
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171 | 171 | else |
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172 | 172 | author == user |
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173 | 173 | end |
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174 | 174 | end |
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175 | 175 | |
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176 | 176 | def image? |
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177 | 177 | !!(self.filename =~ /\.(bmp|gif|jpg|jpe|jpeg|png)$/i) |
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178 | 178 | end |
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179 | 179 | |
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180 | 180 | def thumbnailable? |
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181 | 181 | image? |
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182 | 182 | end |
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183 | 183 | |
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184 | 184 | # Returns the full path the attachment thumbnail, or nil |
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185 | 185 | # if the thumbnail cannot be generated. |
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186 | 186 | def thumbnail(options={}) |
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187 | 187 | if thumbnailable? && readable? |
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188 | 188 | size = options[:size].to_i |
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189 | 189 | if size > 0 |
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190 | 190 | # Limit the number of thumbnails per image |
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191 | 191 | size = (size / 50) * 50 |
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192 | 192 | # Maximum thumbnail size |
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193 | 193 | size = 800 if size > 800 |
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194 | 194 | else |
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195 | 195 | size = Setting.thumbnails_size.to_i |
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196 | 196 | end |
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197 | 197 | size = 100 unless size > 0 |
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198 | 198 | target = File.join(self.class.thumbnails_storage_path, "#{id}_#{digest}_#{size}.thumb") |
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199 | 199 | |
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200 | 200 | begin |
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201 | 201 | Redmine::Thumbnail.generate(self.diskfile, target, size) |
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202 | 202 | rescue => e |
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203 | 203 | logger.error "An error occured while generating thumbnail for #{disk_filename} to #{target}\nException was: #{e.message}" if logger |
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204 | 204 | return nil |
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205 | 205 | end |
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206 | 206 | end |
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207 | 207 | end |
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208 | 208 | |
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209 | 209 | # Deletes all thumbnails |
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210 | 210 | def self.clear_thumbnails |
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211 | 211 | Dir.glob(File.join(thumbnails_storage_path, "*.thumb")).each do |file| |
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212 | 212 | File.delete file |
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213 | 213 | end |
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214 | 214 | end |
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215 | 215 | |
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216 | 216 | def is_text? |
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217 | 217 | Redmine::MimeType.is_type?('text', filename) |
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218 | 218 | end |
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219 | 219 | |
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220 | 220 | def is_diff? |
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221 | 221 | self.filename =~ /\.(patch|diff)$/i |
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222 | 222 | end |
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223 | 223 | |
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224 | 224 | # Returns true if the file is readable |
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225 | 225 | def readable? |
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226 | 226 | File.readable?(diskfile) |
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227 | 227 | end |
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228 | 228 | |
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229 | 229 | # Returns the attachment token |
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230 | 230 | def token |
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231 | 231 | "#{id}.#{digest}" |
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232 | 232 | end |
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233 | 233 | |
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234 | 234 | # Finds an attachment that matches the given token and that has no container |
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235 | 235 | def self.find_by_token(token) |
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236 | 236 | if token.to_s =~ /^(\d+)\.([0-9a-f]+)$/ |
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237 | 237 | attachment_id, attachment_digest = $1, $2 |
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238 | 238 | attachment = Attachment.where(:id => attachment_id, :digest => attachment_digest).first |
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239 | 239 | if attachment && attachment.container.nil? |
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240 | 240 | attachment |
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241 | 241 | end |
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242 | 242 | end |
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243 | 243 | end |
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244 | 244 | |
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245 | 245 | # Bulk attaches a set of files to an object |
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246 | 246 | # |
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247 | 247 | # Returns a Hash of the results: |
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248 | 248 | # :files => array of the attached files |
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249 | 249 | # :unsaved => array of the files that could not be attached |
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250 | 250 | def self.attach_files(obj, attachments) |
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251 | 251 | result = obj.save_attachments(attachments, User.current) |
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252 | 252 | obj.attach_saved_attachments |
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253 | 253 | result |
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254 | 254 | end |
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255 | 255 | |
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256 | 256 | def self.latest_attach(attachments, filename) |
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257 | 257 | attachments.sort_by(&:created_on).reverse.detect { |
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258 | 258 | |att| att.filename.downcase == filename.downcase |
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259 | 259 | } |
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260 | 260 | end |
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261 | 261 | |
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262 | 262 | def self.prune(age=1.day) |
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263 | 263 | Attachment.where("created_on < ? AND (container_type IS NULL OR container_type = '')", Time.now - age).destroy_all |
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264 | 264 | end |
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265 | 265 | |
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266 |
# Moves an existing attachment to its target directory |
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266 | # Moves an existing attachment to its target directory | |
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267 | 267 | def move_to_target_directory! |
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268 | 268 | if !new_record? & readable? |
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269 | 269 | src = diskfile |
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270 | 270 | self.disk_directory = target_directory |
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271 | 271 | dest = diskfile |
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272 | 272 | if src != dest && FileUtils.mkdir_p(File.dirname(dest)) && FileUtils.mv(src, dest) |
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273 | 273 | update_column :disk_directory, disk_directory |
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274 | 274 | end |
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275 | 275 | end |
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276 | 276 | end |
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277 | 277 | |
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278 | 278 | # Moves existing attachments that are stored at the root of the files |
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279 | 279 | # directory (ie. created before Redmine 2.3) to their target subdirectories |
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280 | 280 | def self.move_from_root_to_target_directory |
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281 | 281 | Attachment.where("disk_directory IS NULL OR disk_directory = ''").find_each do |attachment| |
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282 | 282 | attachment.move_to_target_directory! |
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283 | 283 | end |
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284 | 284 | end |
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285 | 285 | |
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286 | 286 | private |
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287 | 287 | |
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288 | 288 | # Physically deletes the file from the file system |
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289 | 289 | def delete_from_disk! |
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290 | 290 | if disk_filename.present? && File.exist?(diskfile) |
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291 | 291 | File.delete(diskfile) |
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292 | 292 | end |
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293 | 293 | end |
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294 | 294 | |
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295 | 295 | def sanitize_filename(value) |
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296 | 296 | # get only the filename, not the whole path |
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297 | 297 | just_filename = value.gsub(/^.*(\\|\/)/, '') |
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298 | 298 | |
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299 | 299 | # Finally, replace invalid characters with underscore |
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300 | 300 | @filename = just_filename.gsub(/[\/\?\%\*\:\|\"\'<>]+/, '_') |
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301 | 301 | end |
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302 | 302 | |
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303 | 303 | # Returns the subdirectory in which the attachment will be saved |
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304 | 304 | def target_directory |
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305 | 305 | time = created_on || DateTime.now |
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306 | 306 | time.strftime("%Y/%m") |
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307 | 307 | end |
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308 | 308 | |
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309 | 309 | # Returns an ASCII or hashed filename that do not |
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310 | 310 | # exists yet in the given subdirectory |
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311 | 311 | def self.disk_filename(filename, directory=nil) |
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312 | 312 | timestamp = DateTime.now.strftime("%y%m%d%H%M%S") |
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313 | 313 | ascii = '' |
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314 | 314 | if filename =~ %r{^[a-zA-Z0-9_\.\-]*$} |
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315 | 315 | ascii = filename |
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316 | 316 | else |
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317 | 317 | ascii = Digest::MD5.hexdigest(filename) |
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318 | 318 | # keep the extension if any |
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319 | 319 | ascii << $1 if filename =~ %r{(\.[a-zA-Z0-9]+)$} |
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320 | 320 | end |
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321 | 321 | while File.exist?(File.join(storage_path, directory.to_s, "#{timestamp}_#{ascii}")) |
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322 | 322 | timestamp.succ! |
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323 | 323 | end |
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324 | 324 | "#{timestamp}_#{ascii}" |
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325 | 325 | end |
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326 | 326 | end |
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