minor updates

This commit is contained in:
brent s 2018-04-15 15:20:48 -04:00
parent 3d537e42bc
commit ea414ca5b7
1 changed files with 107 additions and 67 deletions

View File

@ -3,6 +3,7 @@
# Thanks to Matt Rude and https://gist.github.com/mattrude/b0ac735d07b0031bb002 so I can know what the hell I'm doing.

import argparse
import base64
import configparser
import datetime
import getpass
@ -31,61 +32,75 @@ def getDefaults():
'sync': {'throttle': 0},
'paths': {'basedir': '/var/lib/sks',
'destdir': '/srv/http/sks/dumps',
'rsync': 'root@mirror.square-r00t.net:/srv/http/sks/dumps',
'rsync': ('root@mirror.square-r00t.net:' +
'/srv/http/sks/dumps'),
'sksbin': '/usr/bin/sks'},
'runtime': {'nodump': None, 'nocompress': None, 'nosync': None}}
## Build out the default .ini.
dflt_str = ('# IMPORTANT: This script uses certain permissions functions that require some forethought.\n' +
'# You can either run as root, which is the "easy" way, OR you can run as the sks user.\n' +
'# Has to be one or the other; you\'ll SERIOUSLY mess things up otherwise.\n' +
'# If you run as the sks user, MAKE SURE the following is set in your sudoers\n' +
'# (where SKSUSER is the username sks runs as):\n#\tCmnd_Alias SKSCMDS = ' +
'/usr/bin/systemctl start sks-db,\\\n#\t\t/usr/bin/systemctl stop sks-db,\\\n#\t\t' +
'/usr/bin/systemctl start sks-recon,\\\n#\t\t/usr/bin/systemctl stop sks-recon\n#\t' +
'SKSUSER ALL = NOPASSWD: SKSCMDS\n\n')
dflt_str += ('# This was written for systemd systems only. Tweaking would be needed for non-systemd systems\n' +
'# (since every non-systemd uses their own init system callables...)\n\n')
# [system]
d = dflt['system']
dflt_str += ('## SKSDUMP CONFIG FILE ##\n\n# This section controls various system configuration.\n' +
'[system]\n# This should be the user SKS runs as.\nuser = {0}\n# This is the group that' +
'SKS runs as.\ngroup = {1}\n# If None, don\'t compress dumps.\n# If one of: ' +
'xz, gz, bz2, or lrz (for lrzip) then use that compression algo.\ncompress = {2}\n' +
'# These services will be started/stopped, in order, before/after dumps. ' +
'Comma-separated.\nsvcs = {3}\n# The path to the logfile.\nlogfile = {4}\n# The number ' +
'of days of rotated key dumps. If None, don\'t rotate.\ndays = {5}\n# How many keys to include in each ' +
'dump file.\ndumpkeys = {6}\n\n\n').format(d['user'],
d['group'],
d['compress'],
','.join(d['svcs']),
d['logfile'],
d['days'],
d['dumpkeys'])
# [sync]
d = dflt['sync']
dflt_str += ('# This section controls sync settings.\n[sync]\n# This setting is what the speed should be throttled to, '+
'in KiB/s. Use 0 for no throttling.\nthrottle = {0}\n\n').format(d['throttle'])
# [paths]
d = dflt['paths']
dflt_str += ('# This section controls where stuff goes and where we should find it.\n[paths]\n# ' +
'Where your SKS DB is.\nbasedir = {0}\n# This is the base directory where the dumps should go.\n' +
'# There will be a sub-directory created for each date.\ndestdir = {1}\n# The ' +
'path for rsyncing the dumps. If None, don\'t rsync.\nrsync = {2}\n' +
'# The path to the sks binary to use\nsksbin = {3}\n\n').format(d['basedir'],
d['destdir'],
d['rsync'],
d['sksbin'])
# [runtime]
d = dflt['runtime']
dflt_str += ('# This section controls runtime options. These can be overridden at the commandline.\n' +
'# They take no values; they\'re merely options.\n[runtime]\n# Don\'t dump any keys.\n' +
'# Useful for dedicated in-transit/prep boxes.\n;nodump\n# Don\'t compress the dumps, even if ' +
'we have a compression scheme specified in [system:compress].\n;nocompress\n# Don\'t sync to' +
'another server/path, even if one is specified in [paths:rsync].\n;nosync\n')
dflt_b64 = ("""IyBJTVBPUlRBTlQ6IFRoaXMgc2NyaXB0IHVzZXMgY2VydGFpbiBwZXJtaXNz
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ICJlYXN5IiB3YXksIE9SIHlvdSBjYW4gcnVuIGFzIHRoZQojIHNrcyB1c2Vy
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ID0gL3Vzci9iaW4vc3lzdGVtY3RsIHN0YXJ0IHNrcy1kYixcCiMJICAgICAg
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c2VydmVyL3BhdGgsIGV2ZW4gaWYgb25lIGlzIHNwZWNpZmllZCBpbiBbcGF0
aHM6cnN5bmNdLgo7bm9zeW5j""")
realcfg = configparser.ConfigParser(defaults = dflt, allow_no_value = True)
if not os.path.isfile(cfgfile):
with open(cfgfile, 'w') as f:
f.write(dflt_str)
f.write(base64.b64decode(dflt_b64).decode('utf-8'))
realcfg.read(cfgfile)
return(realcfg)

@ -135,7 +150,9 @@ def destPrep(args):
if getpass.getuser() == 'root':
uid = getpwnam(args['user']).pw_uid
gid = getgrnam(args['group']).gr_gid
for d in (args['destdir'], nowdir): # we COULD set it as part of the os.makedirs, but iirc it doesn't set it for existing dirs
# we COULD set it as part of the os.makedirs, but iirc it doesn't set
# it for existing dirs.
for d in (args['destdir'], nowdir):
os.chown(d, uid, gid)
if os.path.isdir(curdir):
os.remove(curdir)
@ -168,7 +185,9 @@ def compressDB(args):
if not args['compress']:
return()
curdir = os.path.join(args['destdir'], NOWstr)
for thisdir, dirs, files in os.walk(curdir): # I use os.walk here because we might handle this differently in the future...
# I use os.walk here because we might handle this differently in the
# future...
for thisdir, dirs, files in os.walk(curdir):
files.sort()
for f in files:
fullpath = os.path.join(thisdir, f)
@ -177,22 +196,30 @@ def compressDB(args):
# However, I can't do this on memory-constrained systems for lrzip.
# See: https://github.com/kata198/python-lrzip/issues/1
with open(args['logfile'], 'a') as f:
f.write('===== {0} Now compressing {1} =====\n'.format(str(datetime.datetime.utcnow()), fullpath))
f.write('===== {0} Now compressing {1} =====\n'.format(
str(datetime.datetime.utcnow()),
fullpath))
if args['compress'].lower() == 'gz':
import gzip
with open(fullpath, 'rb') as fh_in, gzip.open(newfile, 'wb') as fh_out:
with open(fullpath, 'rb') as fh_in, gzip.open(newfile,
'wb') as fh_out:
fh_out.writelines(fh_in)
elif args['compress'].lower() == 'xz':
import lzma
with open(fullpath, 'rb') as fh_in, lzma.open(newfile, 'wb', preset = 9|lzma.PRESET_EXTREME) as fh_out:
with open(fullpath, 'rb') as fh_in, \
lzma.open(newfile,
'wb',
preset = 9|lzma.PRESET_EXTREME) as fh_out:
fh_out.writelines(fh_in)
elif args['compress'].lower() == 'bz2':
import bz2
with open(fullpath, 'rb') as fh_in, bz2.open(newfile, 'wb') as fh_out:
with open(fullpath, 'rb') as fh_in, bz2.open(newfile,
'wb') as fh_out:
fh_out.writelines(fh_in)
elif args['compress'].lower() == 'lrz':
import lrzip
with open(fullpath, 'rb') as fh_in, open(newfile, 'wb') as fh_out:
with open(fullpath, 'rb') as fh_in, open(newfile,
'wb') as fh_out:
fh_out.write(lrzip.compress(fh_in.read()))
os.remove(fullpath)
if getpass.getuser() == 'root':
@ -212,7 +239,8 @@ def syncDB(args):
if args['throttle'] > 0.0:
cmd.insert(-1, '--bwlimit={0}'.format(str(args['throttle'])))
with open(args['logfile'], 'a') as f:
f.write('===== {0} Rsyncing to mirror =====\n'.format(str(datetime.datetime.utcnow())))
f.write('===== {0} Rsyncing to mirror =====\n'.format(
str(datetime.datetime.utcnow())))
with open(args['logfile'], 'a') as f:
subprocess.run(cmd, stdout = f, stderr = f)
return()
@ -223,8 +251,10 @@ def parseArgs():
paths = cfg['paths']
sync = cfg['sync']
runtime = cfg['runtime']
args = argparse.ArgumentParser(description = 'sksdump - a tool for dumping the SKS Database',
epilog = 'brent s. || 2017 || https://square-r00t.net')
args = argparse.ArgumentParser(description = ('sksdump - a tool for ' +
'dumping an SKS Database'),
epilog = ('brent s. || 2018 || ' +
'https://square-r00t.net'))
args.add_argument('-u',
'--user',
default = system['user'],
@ -245,7 +275,9 @@ def parseArgs():
'--services',
default = system['svcs'],
dest = 'svcs',
help = 'A comma-separated list of services that will be stopped/started for the dump (in the provided order).')
help = ('A comma-separated list of services that will ' +
'be stopped/started for the dump (in the ' +
'provided order).'))
args.add_argument('-l',
'--log',
default = system['logfile'],
@ -272,23 +304,28 @@ def parseArgs():
'--sks-binary',
default = paths['sksbin'],
dest = 'sksbin',
help = 'The path to the SKS binary/executable to use to perform the dumps.')
help = ('The path to the SKS binary/executable to use ' +
'to perform the dump.'))
args.add_argument('-e',
'--destdir',
default = paths['destdir'],
dest = 'destdir',
help = 'The directory where the dumps should be saved (a sub-directory with the date will be created).')
help = ('The directory where the dumps should be ' +
'saved (a sub-directory with the date will be ' +
'created).'))
args.add_argument('-r',
'--rsync',
default = paths['rsync'],
dest = 'rsync',
help = 'The remote (user@host:/path/) or local (/path/) path to use to sync the dumps to.')
help = ('The remote (user@host:/path/) or local '+
'(/path/) path to use to sync the dumps to.'))
args.add_argument('-t',
'--throttle',
default = float(sync['throttle']),
dest = 'throttle',
type = float,
help = 'The amount in KiB/s to throttle the rsync to. Use 0 for no throttling.')
help = ('The amount in KiB/s to throttle the rsync ' +
'to. Use 0 for no throttling.'))
args.add_argument('-D',
'--no-dump',
dest = 'nodump',
@ -300,7 +337,8 @@ def parseArgs():
dest = 'nocompress',
action = 'store_true',
default = ('nocompress' in runtime),
help = 'Don\'t compress the DB dumps (default is to compress)')
help = ('Don\'t compress the DB dumps (default is to ' +
'compress)'))
args.add_argument('-S',
'--no-sync',
dest = 'nosync',
@ -315,7 +353,8 @@ def main():
if getpass.getuser() not in ('root', args['user']):
exit('ERROR: You must be root or {0}!'.format(args['user']))
with open(args['logfile'], 'a') as f:
f.write('===== {0} STARTING =====\n'.format(str(datetime.datetime.utcnow())))
f.write('===== {0} STARTING =====\n'.format(
str(datetime.datetime.utcnow())))
if not args['nodump']:
dumpDB(args)
if not args['nocompress']:
@ -323,7 +362,8 @@ def main():
if not args['nosync']:
syncDB(args)
with open(args['logfile'], 'a') as f:
f.write('===== {0} DONE =====\n'.format(str(datetime.datetime.utcnow())))
f.write('===== {0} DONE =====\n'.format(
str(datetime.datetime.utcnow())))


if __name__ == '__main__':