174 lines
6.9 KiB
Python
Executable File
174 lines
6.9 KiB
Python
Executable File
#!/usr/bin/python2
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#
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# The Qubes OS Project, http://www.qubes-os.org
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#
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# Copyright (C) 2010 Rafal Wojtczuk <rafal@invisiblethingslab.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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#
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import os
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import subprocess
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import sys
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import fcntl
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import shutil
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import time
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from qubes.qubes import QubesVmCollection
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from qubes.qubes import QubesException
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from qubes.qubes import QubesDaemonPidfile
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from qubes.qubes import QubesDispVmLabels
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from qubes.qmemman_client import QMemmanClient
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from qubes.notify import tray_notify,tray_notify_error,tray_notify_init
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current_savefile = '/var/run/qubes/current-savefile'
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current_dvm_conf = '/var/run/qubes/current-dvm.conf'
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class QfileDaemonDvm:
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def __init__(self, name):
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self.name = name
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def do_get_dvm(self):
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qmemman_client = QMemmanClient()
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if not qmemman_client.request_memory(400*1024*1024):
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qmemman_client.close()
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errmsg = 'Not enough memory to create DVM. '
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errmsg +='Terminate some appVM and retry.'
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tray_notify_error(errmsg)
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return None
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tray_notify("Starting new DispVM...", "red")
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qvm_collection = QubesVmCollection()
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qvm_collection.lock_db_for_writing()
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qvm_collection.load()
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vm = qvm_collection.get_vm_by_name(self.name)
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if vm is None:
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sys.stderr.write( 'Domain ' + self.name + ' does not exist ?')
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qvm_collection.unlock_db()
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qmemman_client.close()
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return None
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label = vm.label
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if len(sys.argv) > 4 and len(sys.argv[4]) > 0:
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assert sys.argv[4] in QubesDispVmLabels.keys(), "Invalid label"
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label = QubesDispVmLabels[sys.argv[4]]
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print >>sys.stderr, "time=%s, starting qubes-restore" % (str(time.time()))
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retcode = subprocess.call(['/usr/lib/qubes/qubes-restore',
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current_savefile,
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current_dvm_conf,
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'-u', str(vm.default_user),
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'-c', label.color,
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'-i', label.icon_path,
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'-l', str(label.index)])
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qmemman_client.close()
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if retcode != 0:
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tray_notify_error('DisposableVM creation failed, see qubes-restore.log')
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qvm_collection.unlock_db()
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return None
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f = open('/var/run/qubes/dispVM.xid', 'r');
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disp_xid = f.readline().rstrip('\n')
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disp_name = f.readline().rstrip('\n')
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disptempl = f.readline().rstrip('\n')
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f.close()
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print >>sys.stderr, "time=%s, adding to qubes.xml" % (str(time.time()))
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vm_disptempl = qvm_collection.get_vm_by_name(disptempl);
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if vm_disptempl is None:
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sys.stderr.write( 'Domain ' + disptempl + ' does not exist ?')
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qvm_collection.unlock_db()
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return None
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dispid=int(disp_name[4:])
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dispvm=qvm_collection.add_new_disposablevm(disp_name, vm_disptempl.template, label=label, dispid=dispid, netvm=vm_disptempl.netvm)
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# By default inherit firewall rules from calling VM
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if os.path.exists(vm.firewall_conf):
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disp_firewall_conf = '/var/run/qubes/%s-firewall.xml' % disp_name
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shutil.copy(vm.firewall_conf, disp_firewall_conf)
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dispvm.firewall_conf = disp_firewall_conf
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if len(sys.argv) > 5 and len(sys.argv[5]) > 0:
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assert os.path.exists(sys.argv[5]), "Invalid firewall.conf location"
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dispvm.firewall_conf = sys.argv[5]
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qvm_collection.save()
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qvm_collection.unlock_db()
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# Reload firewall rules
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print >>sys.stderr, "time=%s, reloading firewall" % (str(time.time()))
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for vm in qvm_collection.values():
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if vm.is_proxyvm() and vm.is_running():
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vm.write_iptables_xenstore_entry()
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return disp_name
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def dvm_setup_ok(self):
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dvmdata_dir = '/var/lib/qubes/dvmdata/'
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if not os.path.isfile(current_savefile):
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return False
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if not os.path.isfile(dvmdata_dir+'default-savefile') or not os.path.isfile(dvmdata_dir+'savefile-root'):
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return False
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dvm_mtime = os.stat(current_savefile).st_mtime
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root_mtime = os.stat(dvmdata_dir+'savefile-root').st_mtime
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if dvm_mtime < root_mtime:
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template_name = os.path.basename(os.path.dirname(os.readlink(dvmdata_dir+'savefile-root')))
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if subprocess.call(["xl", "domid", template_name]) == 0:
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tray_notify("For optimum performance, you should not "
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"start DispVM when its template is running.", "red")
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return False
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return True
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def get_dvm(self):
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if not self.dvm_setup_ok():
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if os.system("/usr/lib/qubes/qubes-update-dispvm-savefile-with-progress.sh >/dev/null </dev/null" ) != 0:
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tray_notify_error("DVM savefile creation failed")
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return None
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return self.do_get_dvm()
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def remove_disposable_from_qdb(self, name):
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qvm_collection = QubesVmCollection()
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qvm_collection.lock_db_for_writing()
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qvm_collection.load()
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vm = qvm_collection.get_vm_by_name(name)
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if vm is None:
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qvm_collection.unlock_db()
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return False
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qvm_collection.pop(vm.qid)
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qvm_collection.save()
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qvm_collection.unlock_db()
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def main():
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global notify_object
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exec_index = sys.argv[1]
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src_vmname = sys.argv[2]
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user = sys.argv[3]
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#accessed directly by get_dvm()
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# sys.argv[4] - override label
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# sys.argv[5] - override firewall
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print >>sys.stderr, "time=%s, qfile-daemon-dvm init" % (str(time.time()))
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tray_notify_init()
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print >>sys.stderr, "time=%s, creating DispVM" % (str(time.time()))
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qfile = QfileDaemonDvm(src_vmname)
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lockf = open("/var/run/qubes/qfile-daemon-dvm.lock", 'a')
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fcntl.fcntl(lockf, fcntl.F_SETFD, fcntl.FD_CLOEXEC)
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fcntl.flock(lockf, fcntl.LOCK_EX)
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dispname = qfile.get_dvm()
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lockf.close()
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if dispname is not None:
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print >>sys.stderr, "time=%s, starting VM process" % (str(time.time()))
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subprocess.call(['/usr/lib/qubes/qrexec-client', '-d', dispname,
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user+':exec /usr/lib/qubes/qubes-rpc-multiplexer ' + exec_index + " " + src_vmname])
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subprocess.call(['/usr/sbin/xl', 'destroy', dispname])
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qfile.remove_disposable_from_qdb(dispname)
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main()
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