summaryrefslogtreecommitdiffstats
path: root/bitbake/lib/bb/fetch2/ssh.py
blob: 8b5acbf6dbdc1349214956ab6760e5304afadc06 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
'''
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
#
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

import re, os
from   bb import data
from   bb.fetch2 import FetchMethod
from   bb.fetch2 import FetchError
from   bb.fetch2 import logger
from   bb.fetch2 import runfetchcmd


__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, url, urldata, d):
        return __pattern__.match(url) != 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 bb.fetch2.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')
        host = m.group('host')
        urldata.localpath = os.path.join(d.getVar('DL_DIR', True), os.path.basename(path))

    def download(self, url, urldata, d):
        dldir = d.getVar('DL_DIR', True)

        m = __pattern__.match(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
        fr += ':%s' % path


        import commands
        cmd = 'scp -B -r %s %s %s/' % (
            portarg,
            commands.mkarg(fr),
            commands.mkarg(dldir)
        )

        bb.fetch2.check_network_access(d, cmd, urldata.url)

        runfetchcmd(cmd, d)