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|
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# List archive collector
#
# This is a tool to collect archive from networked non-mbox sources, such as:
# - mailman
# - marc.info
# - nntp
#
# After the archives are collected, you can feed them to list-archive-maker.py
#
# Author: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
#
import os
import sys
import mailbox
import email.utils
import email.policy
import email.header
import time
import re
import quopri
import base64
import gzip
import io
import requests
import logging
import subprocess
import argparse
try:
import cchardet as chardet # noqa
except ImportError:
import chardet # noqa
from tempfile import mkstemp
from bs4 import BeautifulSoup # noqa
from requests.adapters import HTTPAdapter
from urllib3 import Retry
from typing import Optional, Union, List, Set
from email import charset
charset.add_charset('utf-8', None)
# Used for our requests session
REQSESSION = None
__VERSION__ = '1.0'
# Where des marc.info live?
MARCURL = 'https://marc.info'
# Wait this many seconds between requests to marc.info, to avoid triggering
# anti-abuse blocks (and to just be nice)
MARCNICE = 1
LASTMARC = None
# Set our own policy
EMLPOLICY = email.policy.EmailPolicy(utf8=True, cte_type='8bit', max_line_length=None)
logger = logging.getLogger(__name__)
def clean_header(hdrval: str) -> Optional[str]:
if hdrval is None:
return ''
decoded = ''
for hstr, hcs in email.header.decode_header(hdrval):
if hcs is None:
hcs = 'utf-8'
try:
decoded += hstr.decode(hcs, errors='replace')
except LookupError:
# Try as utf-u
decoded += hstr.decode('utf-8', errors='replace')
except (UnicodeDecodeError, AttributeError):
decoded += hstr
new_hdrval = re.sub(r'\n?\s+', ' ', decoded)
return new_hdrval.strip()
def get_requests_session() -> requests.Session:
global REQSESSION
if REQSESSION is None:
REQSESSION = requests.session()
retry = Retry(connect=3, backoff_factor=1)
adapter = HTTPAdapter(max_retries=retry)
REQSESSION.mount('http://', adapter)
REQSESSION.mount('https://', adapter)
headers = {
'User-Agent': f'lore-archive-maker/{__VERSION__}',
}
REQSESSION.headers.update(headers)
return REQSESSION
def lore_get_message(msgid: str) -> email.message.Message:
# See where we're redirected
rurl = f'https://lore.kernel.org/r/{msgid}'
rses = get_requests_session()
resp = rses.head(rurl)
if resp.status_code < 300 or resp.status_code > 400:
# Not known on lore
raise LookupError
# Pop msgid from the end of the redirect
msgurl = resp.headers['Location'] + 'raw'
resp.close()
resp = rses.get(msgurl)
msg = email.message_from_bytes(resp.content)
logger.info(' found on lore')
return msg
def lookaside_fillin(msg: email.message.Message) -> bool:
wanthdrs = [
'To',
'Cc',
'References',
'In-Reply-To',
'User-Agent',
'X-Mailer',
]
msgid = str(msg.get('Message-Id')).strip('<>')
try:
lmsg = lore_get_message(msgid)
except LookupError:
return False
for wanthdr in wanthdrs:
if not msg.get(wanthdr) and lmsg.get(wanthdr):
msg[wanthdr] = lmsg.get(wanthdr)
return True
def marc_get_message(marc_list_id: str, msgnum: str, listid: str, toaddr: str,
lookaside: bool) -> email.message.Message:
url = f'{MARCURL}/?l={marc_list_id}&m={msgnum}&q=mbox'
logger.info(' grabbing message %s', msgnum)
resp = marc_nice_get(url)
rawmsg = resp.content
multipart = False
if rawmsg.find(b'\nContent-Type: multipart/mixed;') > 0:
multipart = True
# marc.info breaks MIME by incorrectly writing boundary headers
rawmsg = rawmsg.replace(b'\nContent-Type: multipart/mixed; boundary="--',
b'\nContent-Type: multipart/mixed; boundary="', 1)
# We don't need to fix charset for multipart/mixed messages
msg = email.message_from_bytes(rawmsg)
if not msg.get('Message-Id'):
msg['Message-Id'] = f'<marc-{marc_list_id}-{msgnum}@msgid-missing>'
hdrs = list()
for hdrname, hdrval in list(msg._headers): # noqa
if hdrname == 'To':
# Useless, we throw it out
continue
elif hdrval.find(' () ') and (hdrval.find(' ! ') or hdrval.find('<')):
# marc.info mangles @ and . in email addresses with
# the above values. Unmangle them back.
hdrval = hdrval.replace(' () ', '@').replace(' ! ', '.')
hdrs.append((hdrname, hdrval))
msg._headers = hdrs # noqa
# Marc.info removes content-transfer-encoding headers, so try to figure out
# what format the raw message is in before trying to add it to the mailbox
if not multipart:
payload = msg.get_payload(decode=True)
# Try to base64 decode it first
dec = None
try:
dec = base64.b64decode(payload, validate=True)
if dec != payload:
msg.set_payload(dec)
except: # noqa
pass
if not dec:
try:
dec = quopri.decodestring(payload)
if dec != payload:
msg.set_payload(dec)
except ValueError:
pass
if listid:
msg['List-Id'] = f'<{listid}>'
if lookaside:
lookaside_fillin(msg)
if not msg.get('To'):
msg['To'] = toaddr
return msg
def check_if_spam(bmsg: bytes) -> bool:
if not os.path.exists('/usr/bin/spamc'):
return False
logger.info(' checking for spam')
args = ['/usr/bin/spamc', '-c']
logger.debug('Running %s' % ' '.join(args))
pp = subprocess.Popen(args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
pp.communicate(input=bmsg)
if pp.returncode == 0:
return False
return True
def add_msg_to_mbx(msg: email.message.Message, mbx: Union[mailbox.Mailbox, mailbox.Maildir],
checkspam: bool, cleansubj: Optional[List[str]]) -> None:
if cleansubj:
for remstr in cleansubj:
oldsubj = clean_header(msg.get('Subject', ''))
# We only remove it if it's ^thatsring, or ^Re: thatstring
if oldsubj.startswith(remstr):
msg.replace_header('Subject', oldsubj.replace(remstr, '', 1).strip())
elif oldsubj.startswith(f'Re: {remstr}'):
msg.replace_header('Subject', oldsubj.replace(f'Re: {remstr}', 'Re:', 1).strip())
if msg.get_default_type() == 'text/plain':
try:
payload = msg.get_payload(decode=True)
if payload:
msg.set_charset(chardet.detect(payload)['encoding'])
except: # noqa
# This may fail for various reasons having to do with the wonderful world
# of 8bit content and legacy encodings.
# Ignore and hope we can still as_string below.
pass
try:
bmsg = msg.as_string(policy=EMLPOLICY).encode()
if checkspam and check_if_spam(bmsg):
logger.info(' spam: %s', msg['Subject'])
return
logger.info(' added: %s', msg['Subject'])
mbx.add(bmsg)
except: # noqa
# Throw it out, because life is too short to figure out all possible ways
# that decades-old email messages make python break.
logger.info(' corrupted: %s', msg['Subject'])
return
def marc_nice_get(url: str):
global LASTMARC
if LASTMARC:
msleep = MARCNICE - (time.time() - LASTMARC)
else:
msleep = MARCNICE
if msleep > 0:
time.sleep(msleep)
rses = get_requests_session()
rsp = rses.get(url)
LASTMARC = time.time()
return rsp
def marc_get_full_thread(marc_list_id: str, thread_id: str) -> List[str]:
cp = 1
msgnums = list()
logger.info('Grabbing thread %s', thread_id)
while True:
lastpage = True
np = cp + 1
nl = f'r={np}&'
url = f'{MARCURL}/?t={thread_id}&r={cp}&w=1'
rsp = marc_nice_get(url)
soup = BeautifulSoup(rsp.content, features='lxml')
for tag in soup.find_all('a'):
href = tag.attrs.get('href')
if not href:
continue
# See if it's a link to the next page
if href.find(nl) >= 0:
lastpage = False
continue
# Is it from the wrong list?
if href.find(marc_list_id) < 0:
continue
match = re.search(r'm=(\d+)\D', href)
if match:
msgnums.append(match.groups()[0])
continue
if lastpage:
break
cp += 1
logger.info('\t... page %s', cp)
return msgnums
def parse_pipermail_index(pipermail_url: str) -> Set[str]:
logger.info('Grabbing pipermail index from %s', pipermail_url)
rses = get_requests_session()
resp = rses.get(pipermail_url)
index = resp.content
soup = BeautifulSoup(index, features='lxml')
mboxes = set()
for tag in soup.find_all('a'):
# we are looking for a href that ends with .txt.gz
if 'href' in tag.attrs and tag.attrs['href'].find('.txt') > 1:
mboxes.add(os.path.join(pipermail_url, tag.attrs['href']))
return mboxes
def parse_hyperkitty_index(hyperkitty_url: str) -> Set[str]:
logger.info('Grabbing hyperkitty index from %s', hyperkitty_url)
rses = get_requests_session()
resp = rses.get(hyperkitty_url)
index = resp.content
soup = BeautifulSoup(index, features='lxml')
mboxes = set()
for tag in soup.find_all('a'):
# we are looking for a href that has year/month notation
if 'href' in tag.attrs:
matches = re.search(r'.*/(\d{4})/(\d{1,2})/', tag.attrs['href'])
if matches:
year, month = matches.groups()
year = int(year)
month = int(month)
fromdate = '%d-%02d-01' % (year, month)
if month == 12:
todate = '%d-01-01' % (year+1)
else:
todate = '%d-%02d-01' % (year, month+1)
archurl = '%s/export/export.mbox.gz?start=%s&end=%s' % (hyperkitty_url.rstrip('/'), fromdate, todate)
mboxes.add(archurl)
# return {f'{hyperkitty_url}/export/export.mbox.gz?start=2021-09-01&end=2021-10-01'}
return mboxes
def grab_pipermail_archive(pipermail_url: str, mbx: Union[mailbox.Mailbox, mailbox.Maildir],
args: argparse.Namespace) -> None:
tmpfile = mkstemp('pipermail')[1]
chunks = pipermail_url.split('/')
if pipermail_url[0] == '/':
with open(pipermail_url, 'rb') as fh:
if pipermail_url[-3:] == '.gz':
with gzip.GzipFile(fileobj=fh) as uncompressed:
mboxdata = uncompressed.read().decode('utf-8', errors='replace')
else:
mboxdata = fh.read().decode('utf-8', errors='replace')
else:
logger.info(' grabbing %s', chunks[-1])
rses = get_requests_session()
# XXX: this can be horribly large
try:
resp = rses.get(pipermail_url, stream=True)
if resp.content.startswith(b'\x1f\x8b'):
with gzip.GzipFile(fileobj=io.BytesIO(resp.content)) as uncompressed:
mboxdata = uncompressed.read().decode('utf-8', errors='replace')
else:
mboxdata = resp.content.decode('utf-8', errors='replace')
resp.close()
except EOFError:
logger.info(' corrupted month: %s, skipped', chunks[-1])
return
# Pipermail does a nasty thing where it doesn't properly handle
# lines in the body that start with "From ". First, we add ">" to
# all lines starting with "From " and then fix some of them in the
# next step.
logger.info(' demangling %s', chunks[-1])
regex = r'^From '
subst = '>From '
mboxdata = re.sub(regex, subst, mboxdata, 0, flags=re.M)
# Fix pipermail mangling where it changes some email addresses
# to be ' at ' instead of '@'. This is easiest to do with a
# handful of regexes than via actual message body manipulation
# as part of the python's email.message object
regex = r'(<[^>]+) at ([^>]+>)'
subst = r'\1@\2'
mboxdata = re.sub(regex, subst, mboxdata, 0, flags=re.M)
regex = r'(<[^>]+)\(a\)([^>]+>)'
subst = r'\1@\2'
mboxdata = re.sub(regex, subst, mboxdata, 0, flags=re.M)
regex = r'^>?((?:From|To):? \S+) at (\S+\..*)'
mboxdata = re.sub(regex, subst, mboxdata, 0, flags=re.M)
# Fix any remaining false From escapes
regex = r'^>(From\s+\S+[@-]\S+\s+\w+\s+\w+\s+\d+\s+\d+:\d+:\d+\s+\d{4})'
subst = r'\1'
mboxdata = re.sub(regex, subst, mboxdata, 0, flags=re.M)
with open(tmpfile, 'wb') as out_fh:
out_fh.write(mboxdata.encode())
# Open it now as a mailbox
tmpmbx = mailbox.mbox(tmpfile)
logger.debug(' %s messages in the archive', len(tmpmbx))
for mkey in tmpmbx.keys():
try:
msg = tmpmbx.get_message(mkey)
except: # noqa
logger.info(' error parsing message %d, skipped', mkey)
continue
oldfrom = str(msg.get('From', ''))
if oldfrom:
newfrom = clean_header(oldfrom)
# Fix any leftover at-escaping
newfrom = newfrom.replace(' at ', '@')
# Fix bogus From: foo@bar.baz (Foo Barski) -> Foo Barski <foo@bar.baz>
matches = re.search(r'(\S+@\S+\.\S+) \((.*)\)$', newfrom)
if matches:
gr = matches.groups()
newfrom = f'{gr[1]} <{gr[0]}>'
if newfrom != oldfrom:
msg.replace_header('From', newfrom)
if args.listid:
msg['List-Id'] = f'<{args.listid}>'
if args.lookaside:
lookaside_fillin(msg)
if not msg.get('To'):
msg['To'] = args.to
# Fix in-reply-to
irt = msg.get('in-reply-to')
if irt and irt[0] != '<':
msg.replace_header('In-Reply-To', f'<{irt}>')
add_msg_to_mbx(msg, mbx, args.checkspam, args.clean_subject)
tmpmbx.close()
os.unlink(tmpfile)
def get_marcinfo(args: argparse.Namespace) -> None:
global MARCNICE
if args.nice < 0.5:
logger.critical('Hitting marc.info every %s s will get you auto-banned. Try above 0.5.', args.nice)
sys.exit(1)
MARCNICE = args.nice
if not args.to:
args.to = args.listid.replace('.', '@', 1)
marc_list_id = args.listname
rses = get_requests_session()
url = f'{MARCURL}/?l={marc_list_id}&w=1'
logger.info('Grabbing main index for %s', marc_list_id)
rsp = rses.get(url, stream=False)
soup = BeautifulSoup(rsp.content, features='lxml')
months = list()
for tag in soup.find_all('a'):
# we are looking for a href that contains
href = tag.attrs.get('href')
if not href:
continue
match = re.search(r'b=(\d+)\D', href)
if match:
months.append(match.groups()[0])
mbx = get_outbox(args)
havenums = set()
if len(mbx):
for msg in mbx:
xmarc = msg.get('X-MARC-Message')
if xmarc:
match = re.search(r'm=(\d+)', xmarc)
if match:
havenums.add(match.groups()[0])
logger.info('Found %s messages already in mbox', len(havenums))
thdnums = set()
msgnums = set()
for month in months:
logger.info('Grabbing month %s', month)
# We may be paginated
cp = 1
while True:
lastpage = True
np = cp + 1
url = f'{MARCURL}/?l={marc_list_id}&b={month}&r={cp}&w=1'
if cp > 1:
logger.info(' ... page %s', cp)
rsp = marc_nice_get(url)
soup = BeautifulSoup(rsp.content, features='lxml')
for tag in soup.find_all('a'):
href = tag.attrs.get('href')
if not href:
continue
# See if it's a link to the next page
telltale = f'r={np}&'
if href.find(telltale) >= 0:
lastpage = False
continue
# Is it a message link?
match = re.search(r'm=(\d+)\D', href)
if match:
msgnums.add(match.groups()[0])
continue
# Is it a thread link?
match = re.search(r't=(\d+)\D', href)
if match:
thdnums.add(match.groups()[0])
continue
if lastpage:
break
cp += 1
for thdnum in thdnums:
tnums = marc_get_full_thread(marc_list_id, thdnum)
# last message starts the thread
tnums.reverse()
irt = None
for tnum in tnums:
if tnum in havenums:
logger.info('Already have %s', tnum)
continue
if tnum in msgnums:
msgnums.remove(tnum)
try:
msg = marc_get_message(marc_list_id, tnum, args.listid, args.to, args.lookaside)
except LookupError:
continue
if not irt:
irt = msg.get('Message-Id')
elif not msg.get('References'):
msg['References'] = irt
msg['In-Reply-To'] = irt
add_msg_to_mbx(msg, mbx, args.checkspam, args.clean_subject)
logger.info('Grabbing remaining unthreaded messages')
for msgnum in msgnums:
if msgnum in havenums:
logger.info('Already have %s', tnum)
continue
try:
msg = marc_get_message(marc_list_id, msgnum, args.listid, args.to, args.lookaside)
except LookupError:
continue
if not msg:
continue
add_msg_to_mbx(msg, mbx, args.checkspam, args.clean_subject)
mbx.close()
def get_mailman(args: argparse.Namespace) -> None:
if not args.to:
args.to = args.listid.replace('.', '@', 1)
mbx = get_outbox(args)
if args.url[0] == '/':
grab_pipermail_archive(args.url, mbx, args)
else:
if args.mailman3:
months = parse_hyperkitty_index(args.url)
else:
months = parse_pipermail_index(args.url)
if not months:
print('Could not find any .txt.gz files listed at %s' % args.url)
sys.exit(1)
for month in months:
grab_pipermail_archive(month, mbx, args)
def get_nntp(args: argparse.Namespace) -> None:
import nntplib
# Expect in format nntp://news.gmane.org/gmane.linux.network
logger.info('Connecting to %s', args.url)
chunks = args.url.split('/')
server, group = chunks[-2:]
nntplib._MAXLINE = 1 << 20
server = nntplib.NNTP(server)
resp, count, first, last, name = server.group(group)
total = int(last)
mbx = get_outbox(args)
aid = 1
while aid <= total:
try:
nresp, nainfo = server.article(aid)
msg = email.message_from_bytes(b'\n'.join(nainfo[2]))
logger.info(' processing: %s, %s/%s', msg.get('Message-Id'), aid, total)
newhdrs = list()
for hdrname, hdrval in list(msg._headers): # noqa
if hdrname.find('Original-') == 0:
hdrname = hdrname.replace('Original-', '')
newhdrs.append((hdrname, hdrval))
msg._headers = newhdrs # noqa
if args.listid:
try:
msg.replace_header('List-Id', f'<{args.listid}>')
except KeyError:
msg.add_header('List-Id', f'<{args.listid}>')
add_msg_to_mbx(msg, mbx, args.checkspam, args.clean_subject)
except nntplib.NNTPTemporaryError:
# Ignore one-off article failures -- probably deletes
pass
finally:
aid += 1
mbx.close()
def get_outbox(args: argparse.Namespace) -> Union[mailbox.Mailbox, mailbox.Maildir]:
if args.as_maildir:
logger.info('Will output into maildir %s', args.out)
return mailbox.Maildir(args.out)
return mailbox.mbox(args.out)
if __name__ == '__main__':
# noinspection PyTypeChecker
parser = argparse.ArgumentParser(
description="Collect external mail archives into a local mbox",
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
)
parser.add_argument('-d', '--debug', action='store_true', default=False,
help='Add more debugging info to the output')
parser.add_argument('-i', '--listid',
help='List-Id header to inject into the messages')
parser.add_argument('-t', '--to',
help='Value to put into the To: header, if missing '
'(defaults to list-id with first . replaced with @')
parser.add_argument('-k', '--lookaside', action='store_true', default=False,
help='Attempt to look up matching lore messages for missing to/cc headers')
parser.add_argument('-s', '--checkspam', action='store_true', default=False,
help='Run spamc to check messages for spam before adding')
parser.add_argument('-o', '--out', required=True,
help='Filename of the mailbox file to write out')
parser.add_argument('-m', '--as-maildir', action='store_true', default=False,
help='Output as maildir instead of mbox')
parser.add_argument('-c', '--clean-subject', nargs='+',
help='Remove this string from subjects (e.g. [listname])')
subparsers = parser.add_subparsers(help='sub-command help', dest='subcmd')
sp_mm = subparsers.add_parser('mailman', help='Collect mailman archives',
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
sp_mm.add_argument('-u', '--url', required=True,
help='Mailman archive index URL')
sp_mm.add_argument('-3', '--mailman3', action='store_true', default=False,
help='This is a mailman3 site')
sp_mm.set_defaults(func=get_mailman)
sp_marc = subparsers.add_parser('marcinfo', help='Collect marc.info archives',
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
sp_marc.add_argument('-l', '--listname', required=True,
help='Marc.info list name (?l= parameter)')
sp_marc.add_argument('-n', '--nice', default=MARCNICE, type=float,
help='Seconds to sleep between requests')
sp_marc.set_defaults(func=get_marcinfo)
sp_nntp = subparsers.add_parser('nntp', help='Collect NNTP archives',
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
sp_nntp.add_argument('-u', '--url', required=True,
help='NNTP url (e.g. nntp://news.gmane.com/gmane.linux.kernel')
sp_nntp.set_defaults(func=get_nntp)
cmdargs = parser.parse_args()
logger.setLevel(logging.DEBUG)
ch = logging.StreamHandler()
formatter = logging.Formatter('%(message)s')
ch.setFormatter(formatter)
if cmdargs.debug:
ch.setLevel(logging.DEBUG)
else:
ch.setLevel(logging.INFO)
logger.addHandler(ch)
if 'func' not in cmdargs:
parser.print_help()
sys.exit(1)
cmdargs.func(cmdargs)
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