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- Log -----------------------------------------------------------------
-----------------------------------------------------------------------
Summary of changes:
Makefile | 6 +-
debian/changelog | 21 ++++++
debian/control | 1 +
debian/python-x2gobroker.default | 4 ++
debian/x2gobroker-daemon.default | 2 +-
sbin/x2gobroker | 17 +++--
sbin/x2gobroker-keygen | 3 +
sbin/x2gobroker-pubkeyauthorizer | 2 +-
x2gobroker/__init__.py | 2 +-
x2gobroker/_paramiko.py | 133 ++++++++++++++++++++++++++++++++++++++
x2gobroker/agent.py | 7 +-
x2gobroker/defaults.py | 4 ++
x2gobroker/utils.py | 23 +++++++
x2gobroker/web/extras.py | 4 ++
14 files changed, 214 insertions(+), 15 deletions(-)
create mode 100644 x2gobroker/_paramiko.py
The diff of changes is:
diff --git a/Makefile b/Makefile
index 07428f6..3c90c45 100755
--- a/Makefile
+++ b/Makefile
@@ -23,9 +23,9 @@
SRC_DIR=$(CURDIR)
SHELL=/bin/bash
-INSTALL_DIR=install -d -o root -g root -m 755
-INSTALL_FILE=install -o root -g root -m 644
-INSTALL_PROGRAM=install -o root -g root -m 755
+INSTALL_DIR=install -dm 755
+INSTALL_FILE=install -m 644
+INSTALL_PROGRAM=install -m 755
CC ?= gcc
CFLAGS += -fPIE
diff --git a/debian/changelog b/debian/changelog
index 2bf6d00..ceb4877 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,24 @@
+x2gobroker (0.0.0.5-0~x2go1) unstable; urgency=low
+
+ [ Mike Gabriel ]
+ * New upstream version (0.0.0.5):
+ - Prepare for WSGI based integration into an external httpd.
+ - Monkey patch Paramiko/SSH (adopted from Python X2Go).
+ - Add variable X2GOBROKER_AGENT_USER, so that remote broker
+ agents can theoretically run under another (i.e. != x2gobroker)
+ user ID.
+ - Properly set the Paramiko/SSH missing hostkey policy.
+ * /debian/control:
+ + Add dependency to python-x2gobroker: python-paramiko.
+ * /debian/x2gobroker-daemon.default:
+ + Fix variable names for SSL suport.
+
+ [ Jan Engelhardt ]
+ * New upstream version (0.0.0.5):
+ - Avoid using install -o/-g.
+
+ -- Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Wed, 27 Feb 2013 23:02:33 +0100
+
x2gobroker (0.0.0.4-0~x2go1) unstable; urgency=low
* New upstream version (0.0.0.4):
diff --git a/debian/control b/debian/control
index 07868bd..3190f5c 100644
--- a/debian/control
+++ b/debian/control
@@ -151,6 +151,7 @@ Depends:
python-pampy,
python-netaddr,
python-webpy (>= 1:0.37),
+ python-paramiko,
Suggests:
apache2 | httpd,
Description: X2Go http(s) based session broker (Python modules)
diff --git a/debian/python-x2gobroker.default b/debian/python-x2gobroker.default
index f34e313..0907b79 100644
--- a/debian/python-x2gobroker.default
+++ b/debian/python-x2gobroker.default
@@ -7,6 +7,10 @@
#X2GOBROKER_DAEMON_USER=x2gobroker
#X2GOBROKER_DAEMON_GROUP=x2gobroker
+# The posix user under which the x2gobroker-agent can be launched on
+# remote X2Go Servers.
+#X2GOBROKER_AGENT_USER=x2gobroker
+
# Run X2Go Session Broker in debug mode, this will make the broker
# available through http GET method calls (otherwise: POST method
# only) and you will be able to test the broker through your web
diff --git a/debian/x2gobroker-daemon.default b/debian/x2gobroker-daemon.default
index bff0410..eb76c1b 100644
--- a/debian/x2gobroker-daemon.default
+++ b/debian/x2gobroker-daemon.default
@@ -20,4 +20,4 @@ START_BROKER=true
#X2GOBROKER_SSL_CERTFILE=/etc/x2go/broker/ssl/broker.crt
# SSL key file (ensure permissions are set to root:x2gobroker:0640)
-#X2GOBROKER_SSL_CERTFILE=/etc/x2go/broker/ssl/broker.key
+#X2GOBROKER_SSL_KEYFILE=/etc/x2go/broker/ssl/broker.key
diff --git a/sbin/x2gobroker b/sbin/x2gobroker
index 846a7e5..66c51da 100755
--- a/sbin/x2gobroker
+++ b/sbin/x2gobroker
@@ -98,6 +98,12 @@ if __name__ == "__main__":
# some people just give the port but prepend a colon, webpy does not like this, so we strip if off
cmdline_args.bind = cmdline_args.bind.lstrip(':')
+ # tweak cmdline args so that they become suitable for the web.py framework
+ if len(sys.argv) <= 1:
+ sys.argv.append('')
+ sys.argv.append('')
+ sys.argv[1] = cmdline_args.bind
+ sys.argv[2:] = []
# import classes serving the different web.py URLs
import x2gobroker.web.plain
@@ -117,16 +123,13 @@ urls = ( '/plain/(.*)', 'x2gobroker.web.plain.X2GoBrokerWeb',
'/pubkeys/', 'x2gobroker.web.extras.X2GoBrokerPubKeyService',
)
+app = web.application(urls, globals(), autoreload=False)
+app.internalerror = web.debugerror
+application = app.wsgifunc()
+
# run the web.py standalone daemon...
if __name__ == "__main__":
- if len(sys.argv) <= 1:
- sys.argv.append('')
- sys.argv.append('')
- sys.argv[1] = cmdline_args.bind
- sys.argv[2:] = []
try:
- app = web.application(urls, globals())
- app.internalerror = web.debugerror
app.run()
except socket.error, e:
print (e)
diff --git a/sbin/x2gobroker-keygen b/sbin/x2gobroker-keygen
index 2d3c037..e05e4c0 100755
--- a/sbin/x2gobroker-keygen
+++ b/sbin/x2gobroker-keygen
@@ -29,6 +29,9 @@ import logging
import binascii
import paramiko
+import x2gobroker._paramiko
+x2gobroker._paramiko.monkey_patch_paramiko()
+
from pwd import getpwnam
from grp import getgrnam
diff --git a/sbin/x2gobroker-pubkeyauthorizer b/sbin/x2gobroker-pubkeyauthorizer
index 62fed95..55ec630 100755
--- a/sbin/x2gobroker-pubkeyauthorizer
+++ b/sbin/x2gobroker-pubkeyauthorizer
@@ -36,7 +36,7 @@ import logging.config
from pwd import getpwnam
from grp import getgrnam
-__VERSION__ = '0.0.0.4'
+__VERSION__ = '0.0.0.5'
__AUTHOR__ = 'Mike Gabriel (X2Go Project) <mike.gabriel(a)das-netzwerkteam.de>'
PROG_NAME = os.path.basename(sys.argv[0])
diff --git a/x2gobroker/__init__.py b/x2gobroker/__init__.py
index 576a849..f8ccf70 100644
--- a/x2gobroker/__init__.py
+++ b/x2gobroker/__init__.py
@@ -18,5 +18,5 @@
# Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
-__VERSION__ = '0.0.0.4'
+__VERSION__ = '0.0.0.5'
__AUTHOR__ = 'Mike Gabriel (X2Go Project) <mike.gabriel(a)das-netzwerkteam.de>'
diff --git a/x2gobroker/_paramiko.py b/x2gobroker/_paramiko.py
new file mode 100644
index 0000000..b83cff3
--- /dev/null
+++ b/x2gobroker/_paramiko.py
@@ -0,0 +1,133 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (C) 2010-2013 by Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de>
+#
+# Python X2Go is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Python X2Go 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program; if not, write to the
+# Free Software Foundation, Inc.,
+# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+
+"""\
+Monkey Patch and feature map for Python Paramiko
+
+"""
+
+import paramiko
+import platform
+from utils import compare_versions
+
+PARAMIKO_VERSION = paramiko.__version__.split()[0]
+PARAMIKO_FEATURE = {
+ 'forward-ssh-agent': compare_versions(PARAMIKO_VERSION, ">=", '1.8.0') and (platform.system() != "Windows"),
+ 'use-compression': compare_versions(PARAMIKO_VERSION, ">=", '1.7.7.1'),
+ 'hash-host-entries': compare_versions(PARAMIKO_VERSION, ">=", '99'),
+ 'host-entries-reloadable': compare_versions(PARAMIKO_VERSION, ">=", '99'),
+ 'preserve-known-hosts': compare_versions(PARAMIKO_VERSION, ">=", '99'),
+}
+
+def _SSHClient_save_host_keys(self, filename):
+ """\
+ FIXME!!! --- this method should become part of Paramiko
+
+ This method has been taken from SSHClient class in Paramiko and
+ has been improved and adapted to latest SSH implementations.
+
+ Save the host keys back to a file.
+ Only the host keys loaded with
+ L{load_host_keys} (plus any added directly) will be saved -- not any
+ host keys loaded with L{load_system_host_keys}.
+
+ @param filename: the filename to save to
+ @type filename: str
+
+ @raise IOError: if the file could not be written
+
+ """
+ # update local host keys from file (in case other SSH clients
+ # have written to the known_hosts file meanwhile.
+ if self.known_hosts is not None:
+ self.load_host_keys(self.known_hosts)
+
+ f = open(filename, 'w')
+ #f.write('# SSH host keys collected by paramiko\n')
+ _host_keys = self.get_host_keys()
+ for hostname, keys in _host_keys.iteritems():
+
+ for keytype, key in keys.iteritems():
+ f.write('%s %s %s\n' % (hostname, keytype, key.get_base64()))
+
+ f.close()
+
+
+def _HostKeys_load(self, filename):
+ """\
+ Read a file of known SSH host keys, in the format used by openssh.
+ This type of file unfortunately doesn't exist on Windows, but on
+ posix, it will usually be stored in
+ C{os.path.expanduser("~/.ssh/known_hosts")}.
+
+ If this method is called multiple times, the host keys are merged,
+ not cleared. So multiple calls to C{load} will just call L{add},
+ replacing any existing entries and adding new ones.
+
+ @param filename: name of the file to read host keys from
+ @type filename: str
+
+ @raise IOError: if there was an error reading the file
+
+ """
+ f = open(filename, 'r')
+ for line in f:
+ line = line.strip()
+ if (len(line) == 0) or (line[0] == '#'):
+ continue
+ e = paramiko.hostkeys.HostKeyEntry.from_line(line)
+ if e is not None:
+ _hostnames = e.hostnames
+ for h in _hostnames:
+ if self.check(h, e.key):
+ e.hostnames.remove(h)
+ if len(e.hostnames):
+ self._entries.append(e)
+ f.close()
+
+
+def _HostKeys_add(self, hostname, keytype, key, hash_hostname=True):
+ """\
+ Add a host key entry to the table. Any existing entry for a
+ C{(hostname, keytype)} pair will be replaced.
+
+ @param hostname: the hostname (or IP) to add
+ @type hostname: str
+ @param keytype: key type (C{"ssh-rsa"} or C{"ssh-dss"})
+ @type keytype: str
+ @param key: the key to add
+ @type key: L{PKey}
+
+ """
+ for e in self._entries:
+ if (hostname in e.hostnames) and (e.key.get_name() == keytype):
+ e.key = key
+ return
+ if not hostname.startswith('|1|') and hash_hostname:
+ hostname = self.hash_host(hostname)
+ self._entries.append(paramiko.hostkeys.HostKeyEntry([hostname], key))
+
+
+def monkey_patch_paramiko():
+ if not PARAMIKO_FEATURE['preserve-known-hosts']:
+ paramiko.SSHClient.save_host_keys = _SSHClient_save_host_keys
+ if not PARAMIKO_FEATURE['host-entries-reloadable']:
+ paramiko.hostkeys.HostKeys.load = _HostKeys_load
+ if not PARAMIKO_FEATURE['hash-host-entries']:
+ paramiko.hostkeys.HostKeys.add = _HostKeys_add
diff --git a/x2gobroker/agent.py b/x2gobroker/agent.py
index 600a361..13dc2af 100644
--- a/x2gobroker/agent.py
+++ b/x2gobroker/agent.py
@@ -22,6 +22,9 @@
import subprocess
import paramiko
+import x2gobroker._paramiko
+x2gobroker._paramiko.monkey_patch_paramiko()
+
# X2Go Broker modules
import x2gobroker.defaults
from x2gobroker.loggers import logger_error
@@ -72,7 +75,7 @@ def call_remote_broker_agent(username, mode, remote_agent):
'{mode}'.format(mode=mode),
]
- remote_username = x2gobroker.defaults.X2GOBROKER_USER
+ remote_username = x2gobroker.defaults.X2GOBROKER_AGENT_USER
remote_hostname = remote_agent[u'hostname']
remote_port = int(remote_agent[u'port'])
@@ -80,7 +83,7 @@ def call_remote_broker_agent(username, mode, remote_agent):
try:
client = paramiko.SSHClient()
client.load_system_host_keys()
- client.set_missing_host_key_policy(paramiko.WarningPolicy)
+ client.set_missing_host_key_policy(paramiko.WarningPolicy())
client.connect(remote_hostname, remote_port, remote_username, look_for_keys=True, allow_agent=True)
result = []
diff --git a/x2gobroker/defaults.py b/x2gobroker/defaults.py
index 6c377c4..cd0dfd7 100644
--- a/x2gobroker/defaults.py
+++ b/x2gobroker/defaults.py
@@ -34,6 +34,10 @@ if os.environ.has_key('X2GOBROKER_DAEMON_GROUP'):
X2GOBROKER_DAEMON_GROUP=os.environ['X2GOBROKER_DAEMON_GROUP']
else:
X2GOBROKER_DAEMON_GROUP="x2gobroker"
+if os.environ.has_key('X2GOBROKER_AGENT_USER'):
+ X2GOBROKER_AGENT_USER=os.environ['X2GOBROKER_AGENT_USER']
+else:
+ X2GOBROKER_AGENT_USER="x2gobroker"
###
### dynamic default values, influencable through os.environ...
diff --git a/x2gobroker/utils.py b/x2gobroker/utils.py
index 1a74ed8..79f5ed3 100644
--- a/x2gobroker/utils.py
+++ b/x2gobroker/utils.py
@@ -23,6 +23,7 @@ import os
import sys
import types
import locale
+import distutils.version
def _checkConfigFileDefaults(data_structure):
"""\
@@ -80,3 +81,25 @@ def get_encoding():
encoding = 'ascii'
return encoding
+def compare_versions(version_a, op, version_b):
+ """\
+ Compare <version_a> with <version_b> using operator <op>.
+ In the background C{distutils.version.LooseVersion} is
+ used for the comparison operation.
+
+ @param version_a: a version string
+ @type version_a: C{str}
+ @param op: an operator provide as string (e.g. '<', '>', '==', '>=' etc.)
+ @type op: C{str}
+ @param version_b: another version string that is to be compared with <version_a>
+ @type version_b: C{str}
+
+ """
+
+ ### FIXME: this comparison is not reliable with beta et al. version strings
+
+ ver_a = distutils.version.LooseVersion(version_a)
+ ver_b = distutils.version.LooseVersion(version_b)
+
+ return eval("ver_a %s ver_b" % op)
+
diff --git a/x2gobroker/web/extras.py b/x2gobroker/web/extras.py
index 728aaec..75571e6 100644
--- a/x2gobroker/web/extras.py
+++ b/x2gobroker/web/extras.py
@@ -23,6 +23,10 @@
# modules
import os.path
import paramiko
+
+import x2gobroker._paramiko
+x2gobroker._paramiko.monkey_patch_paramiko()
+
import x2gobroker.defaults
class X2GoBrokerPubKeyService:
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