# frozen_string_literal: true # Redmine - project management software # Copyright (C) 2006-2019 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 'fileutils' require 'mimemagic' module Redmine module Thumbnail extend Redmine::Utils::Shell CONVERT_BIN = (Redmine::Configuration['imagemagick_convert_command'] || 'convert').freeze ALLOWED_TYPES = %w(image/bmp image/gif image/jpeg image/png application/pdf) # Generates a thumbnail for the source image to target def self.generate(source, target, size, is_pdf = false) return nil unless convert_available? return nil if is_pdf && !gs_available? unless File.exists?(target) mime_type = File.open(source) {|f| MimeMagic.by_magic(f).try(:type) } return nil if mime_type.nil? return nil if !ALLOWED_TYPES.include? mime_type return nil if is_pdf && mime_type != "application/pdf" # Make sure we only invoke Imagemagick if the file type is allowed unless File.open(source) {|f| ALLOWED_TYPES.include? MimeMagic.by_magic(f).try(:type) } return nil end directory = File.dirname(target) unless File.exists?(directory) FileUtils.mkdir_p directory end size_option = "#{size}x#{size}>" if is_pdf cmd = "#{shell_quote CONVERT_BIN} #{shell_quote "#{source}[0]"} -thumbnail #{shell_quote size_option} #{shell_quote "png:#{target}"}" else cmd = "#{shell_quote CONVERT_BIN} #{shell_quote source} -auto-orient -thumbnail #{shell_quote size_option} #{shell_quote target}" end unless system(cmd) logger.error("Creating thumbnail failed (#{$?}):\nCommand: #{cmd}") return nil end end target end def self.convert_available? return @convert_available if defined?(@convert_available) begin `#{shell_quote CONVERT_BIN} -version` @convert_available = $?.success? rescue @convert_available = false end logger.warn("Imagemagick's convert binary (#{CONVERT_BIN}) not available") unless @convert_available @convert_available end def self.gs_available? return @gs_available if defined?(@gs_available) if Redmine::Platform.mswin? @gs_available = false else begin `gs -version` @gs_available = $?.success? rescue @gs_available = false end end @gs_available end def self.logger Rails.logger end end end d_password_when_updating_global_cred_in_files_external'>artonge/feat/compare_hashed_password_when_updating_global_cred_in_files_external Nextcloud server, a safe home for all your data: https://github.com/nextcloud/serverwww-data
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