[gimp-web/wip/Jehan/issue-236-new-sponsor-page: 16/25] tools: add --verify-checksum option to gimp-check-mirrors.py.
- From: Jehan <jehanp src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gimp-web/wip/Jehan/issue-236-new-sponsor-page: 16/25] tools: add --verify-checksum option to gimp-check-mirrors.py.
- Date: Sun, 19 Sep 2021 17:31:19 +0000 (UTC)
commit 4b0435b22cd79ae40a2155406aac86c5d50bc139
Author: Jehan <jehan girinstud io>
Date: Tue Aug 31 16:14:41 2021 +0200
tools: add --verify-checksum option to gimp-check-mirrors.py.
As the option name implies, it will not only check availability, but
also compute the checksum of each mirror file to compare it with the
original. This way, we can randomly check for errors or worse malevolent
changes of our mirrored data.
As expected, it is not the fastest process, so it stays an option (maybe
a good improvement could be to make the checks multi-threaded,
downloading several files and computing several checksums in same time).
tools/downloads/gimp-check-mirrors.py | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
---
diff --git a/tools/downloads/gimp-check-mirrors.py b/tools/downloads/gimp-check-mirrors.py
index e097081d..158aa702 100755
--- a/tools/downloads/gimp-check-mirrors.py
+++ b/tools/downloads/gimp-check-mirrors.py
@@ -3,14 +3,18 @@
import os
import argparse
import fileinput
+import hashlib
import requests
from urllib.error import HTTPError, URLError
+from urllib.request import urlretrieve, urlopen
import concurrent.futures
# argparse for mirrorsfile and uri
parser = argparse.ArgumentParser(description='Check if GIMP download mirrors have a file from
download.gimp.org.')
parser.add_argument('--mirrorsfile', metavar='<file>', default=os.path.dirname(__file__) +
'/downloads.http.txt',
help='A file with one download mirror per line, either https:// or http://. Each line is
expected to point to the equivalent of https://download.gimp.org/pub/gimp/, as some mirrors only have that
directory structure.')
+parser.add_argument('--verify-checksum', dest='verify_checksum', action='store_true',
+ help='Whether to do a deep verification by validating identical checksums.')
parser.add_argument(dest='uris', metavar='<uri>', nargs='+',
help='One or more URIs pointing to the file on download.gimp.org, e.g.
https://download.gimp.org/pub/gimp/v2.10/gimp-2.10.20.tar.bz2')
@@ -27,6 +31,10 @@ def load_url(url, timeout):
with requests.head(url, timeout=timeout) as conn:
return conn
+with urlopen('https://download.gimp.org/pub/gimp/' + dgo_uri_local, timeout = 5.0) as remote_file:
+ origin_sum = hashlib.sha256()
+ origin_sum.update(remote_file.read())
+
# read mirrors file
# fileinput.
#with concurrent.futures.ThreadPoolExecutor(max_workers=5) as executor:
@@ -36,7 +44,18 @@ with fileinput.input(files=(args.mirrorsfile), mode='r') as f:
try:
response = requests.head(url=mirror_uri, timeout=10, allow_redirects=True)
- print(str(response.status_code) + ' : ' + mirror_uri)
+
+ checksum_text = ''
+ if args.verify_checksum:
+ with urlopen(mirror_uri, timeout = 5.0) as remote_file:
+ m = hashlib.sha256()
+ m.update(remote_file.read())
+ if m.digest() == origin_sum.digest():
+ checksum_text = ' (checksum OK)'
+ else:
+ checksum_text = ' (checksum KO)'
+
+ print(str(response.status_code) + ' : ' + mirror_uri + checksum_text)
except HTTPError as error:
print(str(error.code) + ' : ' + mirror_uri)
except URLError as error:
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