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Fix/rsync issues (#1036)

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* Fixed issue with relative path for rsync relative names

Actually using the parsed URL `path` part, instead of doing a lousy split().
Renamed the `p` variable into something more sensible (`target`).

Fixes: #1019

* Added more verbose error messages upon rsync failures

fixes #1033

* Added command to test file listing
This commit is contained in:
guyzmo 2016-12-17 15:29:48 +01:00 committed by Joshua Tauberer
parent 99d0afd650
commit 34d58fb720
1 changed files with 33 additions and 15 deletions
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48
management/backup.py
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@ -382,21 +382,21 @@ def run_duplicity_restore(args):
def list_target_files(config):
import urllib.parse
try:
p = urllib.parse.urlparse(config["target"])
target = urllib.parse.urlparse(config["target"])
except ValueError:
return "invalid target"
if p.scheme == "file":
return [(fn, os.path.getsize(os.path.join(p.path, fn))) for fn in os.listdir(p.path)]
if target.scheme == "file":
return [(fn, os.path.getsize(os.path.join(target.path, fn))) for fn in os.listdir(target.path)]
elif p.scheme == "rsync":
elif target.scheme == "rsync":
rsync_fn_size_re = re.compile(r'.* ([^ ]*) [^ ]* [^ ]* (.*)')
rsync_target = '{host}:{path}'
_, target_host, target_path = config['target'].split('//')
target_path = '/' + target_path
if not target_path.endswith('/'):
target_path += '/'
if not target.path.endswith('/'):
target_path = target.path + '/'
if target.path.startswith('/'):
target_path = target.path[1:]
rsync_command = [ 'rsync',
'-e',
@ -404,11 +404,11 @@ def list_target_files(config):
'--list-only',
'-r',
rsync_target.format(
host=target_host,
host=target.netloc,
path=target_path)
]
code, listing = shell('check_output', rsync_command, trap=True)
code, listing = shell('check_output', rsync_command, trap=True, capture_stderr=True)
if code == 0:
ret = []
for l in listing.split('\n'):
@ -417,21 +417,33 @@ def list_target_files(config):
ret.append( (match.groups()[1], int(match.groups()[0].replace(',',''))) )
return ret
else:
raise ValueError("Connection to rsync host failed")
if 'Permission denied (publickey).' in listing:
reason = "Invalid user or check you correctly copied the SSH key."
elif 'No such file or directory' in listing:
reason = "Provided path {} is invalid.".format(target_path)
elif 'Network is unreachable' in listing:
reason = "The IP address {} is unreachable.".format(target.hostname)
elif 'Could not resolve hostname':
reason = "The hostname {} cannot be resolved.".format(target.hostname)
else:
reason = "Unknown error." \
"Please check running 'python management/backup.py --verify'" \
"from mailinabox sources to debug the issue."
raise ValueError("Connection to rsync host failed: {}".format(reason))
elif p.scheme == "s3":
elif target.scheme == "s3":
# match to a Region
fix_boto() # must call prior to importing boto
import boto.s3
from boto.exception import BotoServerError
for region in boto.s3.regions():
if region.endpoint == p.hostname:
if region.endpoint == target.hostname:
break
else:
raise ValueError("Invalid S3 region/host.")
bucket = p.path[1:].split('/')[0]
path = '/'.join(p.path[1:].split('/')[1:]) + '/'
bucket = target.path[1:].split('/')[0]
path = '/'.join(target.path[1:].split('/')[1:]) + '/'
# If no prefix is specified, set the path to '', otherwise boto won't list the files
if path == '/':
@ -536,6 +548,12 @@ if __name__ == "__main__":
# are readable, and b) report if they are up to date.
run_duplicity_verification()
elif sys.argv[-1] == "--list":
# Run duplicity's verification command to check a) the backup files
# are readable, and b) report if they are up to date.
for fn, size in list_target_files(get_backup_config(load_environment())):
print("{}\t{}".format(fn, size))
elif sys.argv[-1] == "--status":
# Show backup status.
ret = backup_status(load_environment())