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'''
BitBake 'Fetch' implementations
This implementation is for Secure Shell (SSH), and attempts to comply with the
IETF secsh internet draft:
http://tools.ietf.org/wg/secsh/draft-ietf-secsh-scp-sftp-ssh-uri/
Currently does not support the sftp parameters, as this uses scp
Also does not support the 'fingerprint' connection parameter.
Please note that '/' is used as host, path separator not ':' as you may
be used to, also '~' can be used to specify user HOME, but again after '/'
Example SRC_URI:
SRC_URI = "ssh://user@host.example.com/dir/path/file.txt"
SRC_URI = "ssh://user@host.example.com/~/file.txt"
'''
# Copyright (C) 2006 OpenedHand Ltd.
#
#
# Based in part on svk.py:
# Copyright (C) 2006 Holger Hans Peter Freyther
# Based on svn.py:
# Copyright (C) 2003, 2004 Chris Larson
# Based on functions from the base bb module:
# Copyright 2003 Holger Schurig
#
#
# SPDX-License-Identifier: GPL-2.0-only
#
import re, os
from bb.fetch2 import check_network_access, FetchMethod, ParameterError, runfetchcmd
import urllib
__pattern__ = re.compile(r'''
\s* # Skip leading whitespace
ssh:// # scheme
( # Optional username/password block
(?P<user>\S+) # username
(:(?P<pass>\S+))? # colon followed by the password (optional)
(?P<cparam>(;[^;]+)*)? # connection parameters block (optional)
@
)?
(?P<host>\S+?) # non-greedy match of the host
(:(?P<port>[0-9]+))? # colon followed by the port (optional)
/
(?P<path>[^;]+) # path on the remote system, may be absolute or relative,
# and may include the use of '~' to reference the remote home
# directory
(?P<sparam>(;[^;]+)*)? # parameters block (optional)
$
''', re.VERBOSE)
class SSH(FetchMethod):
'''Class to fetch a module or modules via Secure Shell'''
def supports(self, urldata, d):
return __pattern__.match(urldata.url) is not None
def supports_checksum(self, urldata):
return False
def urldata_init(self, urldata, d):
if 'protocol' in urldata.parm and urldata.parm['protocol'] == 'git':
raise ParameterError(
"Invalid protocol - if you wish to fetch from a git " +
"repository using ssh, you need to use " +
"git:// prefix with protocol=ssh", urldata.url)
m = __pattern__.match(urldata.url)
path = m.group('path')
path = urllib.parse.unquote(path)
host = m.group('host')
urldata.localpath = os.path.join(d.getVar('DL_DIR'),
os.path.basename(os.path.normpath(path)))
def download(self, urldata, d):
dldir = d.getVar('DL_DIR')
m = __pattern__.match(urldata.url)
path = m.group('path')
host = m.group('host')
port = m.group('port')
user = m.group('user')
password = m.group('pass')
if port:
portarg = '-P %s' % port
else:
portarg = ''
if user:
fr = user
if password:
fr += ':%s' % password
fr += '@%s' % host
else:
fr = host
if path[0] != '~':
path = '/%s' % path
path = urllib.parse.unquote(path)
fr += ':%s' % path
cmd = 'scp -B -r %s %s %s/' % (
portarg,
fr,
dldir
)
check_network_access(d, cmd, urldata.url)
runfetchcmd(cmd, d)
def checkstatus(self, fetch, urldata, d):
"""
Check the status of the url
"""
m = __pattern__.match(urldata.url)
path = m.group('path')
host = m.group('host')
port = m.group('port')
user = m.group('user')
password = m.group('pass')
if port:
portarg = '-P %s' % port
else:
portarg = ''
if user:
fr = user
if password:
fr += ':%s' % password
fr += '@%s' % host
else:
fr = host
if path[0] != '~':
path = '/%s' % path
path = urllib.parse.unquote(path)
cmd = 'ssh -o BatchMode=true %s %s [ -f %s ]' % (
portarg,
fr,
path
)
check_network_access(d, cmd, urldata.url)
runfetchcmd(cmd, d)
return True
|
