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gdrivedl.py
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gdrivedl.py
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#!/usr/bin/env python
from __future__ import unicode_literals
import os
import re
import sys
import unicodedata
import argparse
import logging
from contextlib import contextmanager
from datetime import datetime, timedelta
try:
# Python3
from urllib.request import Request, build_opener, HTTPCookieProcessor
from html.parser import HTMLParser
from http.cookiejar import CookieJar
except ImportError:
# Python2
from HTMLParser import HTMLParser
from urllib2 import Request, build_opener, HTTPCookieProcessor
from cookielib import CookieJar
try:
from html import unescape
except ImportError:
html = HTMLParser()
unescape = html.unescape
ITEM_URL = "https://drive.google.com/open?id={id}"
FILE_URL = "https://docs.google.com/uc?export=download&id={id}&confirm={confirm}"
FOLDER_URL = "https://drive.google.com/embeddedfolderview?id={id}#list"
CHUNKSIZE = 64 * 1024
USER_AGENT = "Mozilla/5.0"
ID_PATTERNS = [
re.compile("/file/d/([0-9A-Za-z_-]{10,})(?:/|$)", re.IGNORECASE),
re.compile("/folders/([0-9A-Za-z_-]{10,})(?:/|$)", re.IGNORECASE),
re.compile("id=([0-9A-Za-z_-]{10,})(?:&|$)", re.IGNORECASE),
re.compile("([0-9A-Za-z_-]{10,})", re.IGNORECASE),
]
FOLDER_PATTERN = re.compile(
'<a href="(https://drive.google.com/.*?)".*?<div class="flip-entry-title">(.*?)</div>.*?<div class="flip-entry-last-modified"><div>(.*?)</div>',
re.DOTALL | re.IGNORECASE,
)
CONFIRM_PATTERN = re.compile(
b"confirm=([0-9A-Za-z_-]+)", re.IGNORECASE
)
FILENAME_PATTERN = re.compile('attachment;filename="(.*?)"', re.IGNORECASE)
def output(text):
try:
sys.stdout.write(text)
except UnicodeEncodeError:
sys.stdout.write(text.encode("utf8"))
# Big thanks to leo_wallentin for below sanitize function (modified slightly for this script)
# https://gitlab.com/jplusplus/sanitize-filename/-/blob/master/sanitize_filename/sanitize_filename.py
def sanitize(filename):
blacklist = ["\\", "/", ":", "*", "?", '"', "<", ">", "|", "\0"]
reserved = [
"CON",
"PRN",
"AUX",
"NUL",
"COM1",
"COM2",
"COM3",
"COM4",
"COM5",
"COM6",
"COM7",
"COM8",
"COM9",
"LPT1",
"LPT2",
"LPT3",
"LPT4",
"LPT5",
"LPT6",
"LPT7",
"LPT8",
"LPT9",
]
filename = unescape(filename).encode("utf8").decode("utf8")
filename = unicodedata.normalize("NFKD", filename)
filename = "".join(c for c in filename if c not in blacklist)
filename = "".join(c for c in filename if 31 < ord(c))
filename = filename.rstrip(". ")
filename = filename.strip()
if all([x == "." for x in filename]):
filename = "_" + filename
if filename in reserved:
filename = "_" + filename
if len(filename) == 0:
filename = "_"
if len(filename) > 255:
parts = re.split(r"/|\\", filename)[-1].split(".")
if len(parts) > 1:
ext = "." + parts.pop()
filename = filename[: -len(ext)]
else:
ext = ""
if filename == "":
filename = "_"
if len(ext) > 254:
ext = ext[254:]
maxl = 255 - len(ext)
filename = filename[:maxl]
filename = filename + ext
filename = filename.rstrip(". ")
if len(filename) == 0:
filename = "_"
return filename
def url_to_id(url):
for pattern in ID_PATTERNS:
match = pattern.search(url)
if match:
return match.group(1)
logging.error("Unable to get ID from {}".format(url))
sys.exit(1)
class GDriveDL(object):
def __init__(self, quiet=False, overwrite=False, mtimes=False):
self._quiet = quiet
self._overwrite = overwrite
self._mtimes = mtimes
self._create_empty_dirs = True
self._opener = build_opener(HTTPCookieProcessor(CookieJar()))
self._processed = []
@contextmanager
def _request(self, url):
logging.debug("Requesting: {}".format(url))
req = Request(url, headers={"User-Agent": USER_AGENT})
f = self._opener.open(req)
try:
yield f
finally:
f.close()
def process_url(self, url, directory, filename=None):
id = url_to_id(url)
url = url.lower()
if "://" not in url:
with self._request(ITEM_URL.format(id=id)) as resp:
url = resp.geturl()
if "/file/" in url or "/uc?" in url:
self.process_file(id, directory, filename=filename)
elif "/folders/" in url:
if filename:
logging.warning("Ignoring --output-document option for folder download")
self.process_folder(id, directory)
else:
logging.error("That id {} returned an unknown url {}".format(id, url))
sys.exit(1)
def process_folder(self, id, directory):
if id in self._processed:
logging.debug('Skipping already processed folder: {}'.format(id))
return
self._processed.append(id)
with self._request(FOLDER_URL.format(id=id)) as resp:
html = resp.read().decode("utf-8")
matches = re.findall(FOLDER_PATTERN, html)
if not matches and "ServiceLogin" in html:
logging.error("Folder: {} does not have link sharing enabled".format(id))
sys.exit(1)
for match in matches:
url, item_name, modified = match
id = url_to_id(url)
if "/file/" in url.lower():
self.process_file(
id, directory, filename=sanitize(item_name), modified=modified
)
elif "/folders/" in url.lower():
self.process_folder(id, os.path.join(directory, sanitize(item_name)))
if self._create_empty_dirs and not os.path.exists(directory):
os.makedirs(directory)
logging.info("Directory: {directory} [Created]".format(directory=directory))
def _get_modified(self, modified):
if not modified or not self._mtimes:
return None
try:
if ":" in modified:
hour, minute = modified.lower().split(":")
if "pm" in minute:
hour = int(hour) + 12
hour = int(hour)+7 # modified is UTC-7 so +7 to utc time
minute = minute.split(" ")[0]
now = datetime.utcnow().replace(hour=0, minute=int(minute), second=0, microsecond=0)
modified = now + timedelta(hours=hour)
elif "/" in modified:
modified = datetime.strptime(modified, "%m/%d/%y")
else:
now = datetime.utcnow()
modified = datetime.strptime(modified, "%b %d")
modified = modified.replace(year=now.year)
except:
logging.debug("Failed to convert mtime: {}".format(modified))
return None
return int((modified - datetime(1970, 1, 1)).total_seconds())
def _set_modified(self, file_path, timestamp):
if not timestamp:
return
try:
os.utime(file_path, (timestamp, timestamp))
except:
logging.debug("Failed to set mtime")
def _exists(self, file_path, modified):
if self._overwrite or not os.path.exists(file_path):
return False
if modified:
try:
return int(os.path.getmtime(file_path)) == modified
except:
logging.debug("Failed to get mtime")
return True
def process_file(self, id, directory, filename=None, modified=None, confirm="t"):
file_path = None
modified_ts = self._get_modified(modified)
if filename:
file_path = (
filename
if os.path.isabs(filename)
else os.path.join(directory, filename)
)
if self._exists(file_path, modified_ts):
logging.info("{file_path} [Exists]".format(file_path=file_path))
return
with self._request(FILE_URL.format(id=id, confirm=confirm)) as resp:
if "ServiceLogin" in resp.url:
logging.error("File: {} does not have link sharing enabled".format(id))
sys.exit(1)
content_disposition = resp.headers.get("content-disposition")
if not content_disposition:
page = resp.read(CHUNKSIZE)
confirm = CONFIRM_PATTERN.search(page)
if confirm:
return self.process_file(
id, directory, filename=filename, modified=modified, confirm=confirm.group(1)
)
elif b"Google Drive - Quota exceeded" in page:
logging.error("Quota exceeded for this file")
else:
logging.error("content-disposition not found")
sys.exit(1)
if not file_path:
filename = FILENAME_PATTERN.search(content_disposition).group(1)
file_path = os.path.join(directory, sanitize(filename))
if self._exists(file_path, modified_ts):
logging.info("{file_path} [Exists]".format(file_path=file_path))
return
directory = os.path.dirname(file_path)
if not os.path.exists(directory):
os.makedirs(directory)
logging.info(
"Directory: {directory} [Created]".format(directory=directory)
)
try:
with open(file_path, "wb") as f:
dl = 0
last_out = 0
while True:
chunk = resp.read(CHUNKSIZE)
if not chunk:
break
if (
b"Too many users have viewed or downloaded this file recently"
in chunk
):
logging.error("Quota exceeded for this file")
sys.exit(1)
dl += len(chunk)
f.write(chunk)
if not self._quiet and (
not last_out or dl - last_out > 1048576
):
output(
"\r{} {:.2f}MB".format(
file_path,
dl / 1024 / 1024,
)
)
last_out = dl
sys.stdout.flush()
except:
if os.path.exists(file_path):
os.remove(file_path)
raise
else:
self._set_modified(file_path, modified_ts)
if not self._quiet:
output("\n")
def main(args=None):
parser = argparse.ArgumentParser(
description="Download Google Drive files & folders"
)
parser.add_argument("url", help="Shared Google Drive URL(s)", nargs="*")
parser.add_argument(
"-P",
"--directory-prefix",
default=".",
help="Output directory (default is current directory)",
)
parser.add_argument(
"-O",
"--output-document",
help="Output filename. Defaults to the GDrive filename. Only valid when downloading a single file.",
)
parser.add_argument(
"-q",
"--quiet",
help="Disable console output",
default=False,
action="store_true",
)
parser.add_argument(
"-m",
"--mtimes",
help="Try use modified times to check for changed files",
default=False,
action="store_true",
)
args = parser.parse_args(args)
if args.quiet:
logging.basicConfig(format="%(levelname)s: %(message)s", level=logging.WARN)
else:
logging.basicConfig(format="%(levelname)s: %(message)s", level=logging.INFO)
if args.output_document and len(args.url) > 1:
logging.warning("Ignoring --output-document option for multiple url download")
args.output_document = None
gdrive = GDriveDL(
quiet=args.quiet, overwrite=args.output_document is not None, mtimes=args.mtimes
)
for url in args.url:
gdrive.process_url(
url, directory=args.directory_prefix, filename=args.output_document
)
if __name__ == "__main__":
main()