/usr/share/rapid-photo-downloader/rapid/copyfiles.py is in rapid-photo-downloader 0.4.10-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# -*- coding: latin1 -*-
### Copyright (C) 2011-2014 Damon Lynch <damonlynch@gmail.com>
### 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
import multiprocessing
import tempfile
import os
import random
import string
import logging
logger = multiprocessing.get_logger()
import rpdmultiprocessing as rpdmp
import rpdfile
import problemnotification as pn
import config
import thumbnail as tn
import io
import shutil
import stat
import hashlib
from gettext import gettext as _
def copy_file_metadata(src, dst, logger=None):
"""Copy all stat info (mode bits, atime, mtime, flags) from src to dst.
Adapated from python's shutil.copystat.
Necessary because with some NTFS file systems, there can be problems
with setting filesystem metadata like permissions and modification time"""
st = os.stat(src)
mode = stat.S_IMODE(st.st_mode)
try:
os.utime(dst, (st.st_atime, st.st_mtime))
except OSError as inst:
if logger:
logger.warning("Couldn't adjust file modification time when copying %s. %s: %s", src, inst.errno, inst.strerror)
try:
os.chmod(dst, mode)
except OSError as inst:
if logger:
logger.warning("Couldn't adjust file permissions when copying %s. %s: %s", src, inst.errno, inst.strerror)
if hasattr(os, 'chflags') and hasattr(st, 'st_flags'):
try:
os.chflags(dst, st.st_flags)
except OSError as inst:
for err in 'EOPNOTSUPP', 'ENOTSUP':
if hasattr(errno, err) and inst.errno == getattr(errno, err):
break
else:
raise
class CopyFiles(multiprocessing.Process):
"""
Copies files from source to temporary directory, giving them a random name
"""
def __init__(self, photo_download_folder, video_download_folder, files,
verify_file,
modify_files_during_download, modify_pipe,
scan_pid,
batch_size_MB, results_pipe, terminate_queue,
run_event):
multiprocessing.Process.__init__(self)
self.results_pipe = results_pipe
self.terminate_queue = terminate_queue
self.batch_size_bytes = batch_size_MB * 1048576 # * 1024 * 1024
self.io_buffer = 1048576
self.photo_download_folder = photo_download_folder
self.video_download_folder = video_download_folder
self.files = files
self.verify_file = verify_file
self.modify_files_during_download = modify_files_during_download
self.modify_pipe = modify_pipe
self.scan_pid = scan_pid
self.no_files= len(self.files)
self.run_event = run_event
def check_termination_request(self):
"""
Check to see this process has not been requested to immediately terminate
"""
if not self.terminate_queue.empty():
x = self.terminate_queue.get()
# terminate immediately
logger.info("Terminating file copying")
return True
return False
def update_progress(self, amount_downloaded, total):
chunk_downloaded = amount_downloaded - self.bytes_downloaded
if (chunk_downloaded > self.batch_size_bytes) or (amount_downloaded == total):
self.bytes_downloaded = amount_downloaded
self.results_pipe.send((rpdmp.CONN_PARTIAL, (rpdmp.MSG_BYTES, (self.scan_pid, self.total_downloaded + amount_downloaded, chunk_downloaded))))
if amount_downloaded == total:
self.bytes_downloaded = 0
def run(self):
"""start the actual copying of files"""
#characters used to generate temporary filenames
filename_characters = string.letters + string.digits
self.bytes_downloaded = 0
self.total_downloaded = 0
self.create_temp_dirs()
# Send the location of both temporary directories, so they can be
# removed once another process attempts to rename all the files in them
# and move them to generated subfolders
self.results_pipe.send((rpdmp.CONN_PARTIAL, (rpdmp.MSG_TEMP_DIRS,
(self.scan_pid,
self.photo_temp_dir,
self.video_temp_dir))))
if self.photo_temp_dir or self.video_temp_dir:
self.thumbnail_maker = tn.Thumbnail()
for i in range(self.no_files):
rpd_file = self.files[i]
# pause if instructed by the caller
self.run_event.wait()
if self.check_termination_request():
return None
#generate temporary name 5 digits long, no extension
temp_name = ''.join(random.choice(filename_characters) for i in xrange(5))
temp_full_file_name = os.path.join(
self._get_dest_dir(rpd_file.file_type),
temp_name)
rpd_file.temp_full_file_name = temp_full_file_name
copy_succeeded = False
src_bytes = ''
try:
dest = io.open(temp_full_file_name, 'wb', self.io_buffer)
src = io.open(rpd_file.full_file_name, 'rb', self.io_buffer)
total = rpd_file.size
amount_downloaded = 0
while True:
# first check if process is being terminated
if self.check_termination_request():
logger.debug("Closing partially written temporary file")
dest.close()
src.close()
return None
else:
chunk = src.read(self.io_buffer)
if chunk:
dest.write(chunk)
src_bytes += chunk
amount_downloaded += len(chunk)
self.update_progress(amount_downloaded, total)
else:
break
dest.close()
src.close()
copy_succeeded = True
except (IOError, OSError) as inst:
rpd_file.add_problem(None,
pn.DOWNLOAD_COPYING_ERROR_W_NO,
{'filetype': rpd_file.title})
rpd_file.add_extra_detail(
pn.DOWNLOAD_COPYING_ERROR_W_NO_DETAIL,
{'errorno': inst.errno, 'strerror': inst.strerror})
rpd_file.status = config.STATUS_DOWNLOAD_FAILED
rpd_file.error_title = rpd_file.problem.get_title()
rpd_file.error_msg = _("%(problem)s\nFile: %(file)s") % \
{'problem': rpd_file.problem.get_problems(),
'file': rpd_file.full_file_name}
logger.error("Failed to download file: %s", rpd_file.full_file_name)
logger.error(inst)
self.update_progress(rpd_file.size, rpd_file.size)
except:
rpd_file.add_problem(None,
pn.DOWNLOAD_COPYING_ERROR,
{'filetype': rpd_file.title})
rpd_file.add_extra_detail(
pn.DOWNLOAD_COPYING_ERROR_DETAIL,
_("An unknown error occurred"))
rpd_file.status = config.STATUS_DOWNLOAD_FAILED
rpd_file.error_title = rpd_file.problem.get_title()
rpd_file.error_msg = _("%(problem)s\nFile: %(file)s") % \
{'problem': rpd_file.problem.get_problems(),
'file': rpd_file.full_file_name}
logger.error("Failed to download file: %s", rpd_file.full_file_name)
self.update_progress(rpd_file.size, rpd_file.size)
# increment this amount regardless of whether the copy actually
# succeeded or not. It's neccessary to keep the user informed.
self.total_downloaded += rpd_file.size
try:
copy_file_metadata(rpd_file.full_file_name, temp_full_file_name, logger)
except:
logger.error("Unknown error updating filesystem metadata when copying %s", rpd_file.full_file_name)
# copy THM (video thumbnail file) if there is one
if copy_succeeded and rpd_file.thm_full_name:
# reuse video's file name
temp_thm_full_name = temp_full_file_name + '__rpd__thm'
try:
shutil.copyfile(rpd_file.thm_full_name, temp_thm_full_name)
rpd_file.temp_thm_full_name = temp_thm_full_name
logger.debug("Copied video THM file %s", rpd_file.temp_thm_full_name)
except (IOError, OSError) as inst:
logger.error("Failed to download video THM file: %s", rpd_file.thm_full_name)
logger.error("%s: %s", inst.errno, inst.strerror)
try:
copy_file_metadata(rpd_file.thm_full_name, temp_thm_full_name. logger)
except:
logger.error("Unknown error updating filesystem metadata when copying %s", rpd_file.thm_full_name)
else:
temp_thm_full_name = None
#copy audio file if there is one
if copy_succeeded and rpd_file.audio_file_full_name:
# reuse photo's file name
temp_audio_full_name = temp_full_file_name + '__rpd__audio'
try:
shutil.copyfile(rpd_file.audio_file_full_name, temp_audio_full_name)
rpd_file.temp_audio_full_name = temp_audio_full_name
logger.debug("Copied audio file %s", rpd_file.temp_audio_full_name)
except (IOError, OSError) as inst:
logger.error("Failed to download audio file: %s", rpd_file.audio_file_full_name)
logger.error("%s: %s", inst.errno, inst.strerror)
try:
copy_file_metadata(rpd_file.audio_file_full_name, temp_audio_full_name, logger)
except:
logger.error("Unknown error updating filesystem metadata when copying %s", rpd_file.audio_file_full_name)
if copy_succeeded and rpd_file.generate_thumbnail:
thumbnail, thumbnail_icon = self.thumbnail_maker.get_thumbnail(
temp_full_file_name,
temp_thm_full_name,
rpd_file.file_type,
(160, 120), (100,100))
else:
thumbnail = None
thumbnail_icon = None
if copy_succeeded and self.verify_file:
rpd_file.md5 = hashlib.md5(src_bytes).hexdigest()
if rpd_file.metadata is not None:
rpd_file.metadata = None
download_count = i + 1
if self.modify_files_during_download and copy_succeeded:
copy_finished = download_count == self.no_files
self.modify_pipe.send((rpd_file, download_count, temp_full_file_name,
thumbnail_icon, thumbnail, copy_finished))
else:
self.results_pipe.send((rpdmp.CONN_PARTIAL, (rpdmp.MSG_FILE,
(copy_succeeded, rpd_file, download_count,
temp_full_file_name,
thumbnail_icon, thumbnail))))
self.results_pipe.send((rpdmp.CONN_COMPLETE, None))
def _get_dest_dir(self, file_type):
if file_type == rpdfile.FILE_TYPE_PHOTO:
return self.photo_temp_dir
else:
return self.video_temp_dir
def _create_temp_dir(self, folder):
try:
temp_dir = tempfile.mkdtemp(prefix="rpd-tmp-", dir=folder)
except OSError, (errno, strerror):
# FIXME: error reporting
logger.error("Failed to create temporary directory in %s: %s %s",
errono,
strerror,
folder)
temp_dir = None
return temp_dir
def create_temp_dirs(self):
self.photo_temp_dir = self.video_temp_dir = None
if self.photo_download_folder is not None:
self.photo_temp_dir = self._create_temp_dir(self.photo_download_folder)
logger.debug("Photo temporary directory: %s", self.photo_temp_dir)
if self.video_download_folder is not None:
self.video_temp_dir = self._create_temp_dir(self.video_download_folder)
logger.debug("Video temporary directory: %s", self.video_temp_dir)
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