mirror of
https://github.com/virt-manager/virt-manager.git
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493 lines
16 KiB
Python
493 lines
16 KiB
Python
#
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# Copyright (C) 2006, 2013 Red Hat, Inc.
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# Copyright (C) 2006 Daniel P. Berrange <berrange@redhat.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (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,
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# MA 02110-1301 USA.
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#
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import glob
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import os
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import logging
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import socket
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from gi.repository import Gio
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from gi.repository import GObject
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from gi.repository import Gtk
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from . import uiutil
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from .baseclass import vmmGObjectUI
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(HV_QEMU,
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HV_XEN,
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HV_LXC,
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HV_QEMU_SESSION,
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HV_BHYVE) = range(5)
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(CONN_SSH,
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CONN_TCP,
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CONN_TLS) = range(3)
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def current_user():
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try:
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import getpass
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return getpass.getuser()
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except:
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return ""
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def default_conn_user(conn):
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if conn == CONN_SSH:
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return "root"
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return current_user()
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class vmmConnect(vmmGObjectUI):
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__gsignals__ = {
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"completed": (GObject.SignalFlags.RUN_FIRST, None, [str, bool]),
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"cancelled": (GObject.SignalFlags.RUN_FIRST, None, []),
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}
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def __init__(self):
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vmmGObjectUI.__init__(self, "connect.ui", "vmm-open-connection")
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self.builder.connect_signals({
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"on_hypervisor_changed": self.hypervisor_changed,
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"on_transport_changed": self.transport_changed,
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"on_hostname_combo_changed": self.hostname_combo_changed,
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"on_connect_remote_toggled": self.connect_remote_toggled,
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"on_username_entry_changed": self.username_changed,
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"on_hostname_changed": self.hostname_changed,
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"on_cancel_clicked": self.cancel,
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"on_connect_clicked": self.open_conn,
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"on_vmm_open_connection_delete_event": self.cancel,
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})
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self.browser = None
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self.browser_sigs = []
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# Set this if we can't resolve 'hostname.local': means avahi
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# prob isn't configured correctly, and we should strip .local
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self.can_resolve_local = None
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# Plain hostname resolve failed, means we should just use IP addr
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self.can_resolve_hostname = None
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self.set_initial_state()
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try:
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self.dbus = Gio.bus_get_sync(Gio.BusType.SYSTEM, None)
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self.avahiserver = Gio.DBusProxy.new_sync(self.dbus, 0, None,
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"org.freedesktop.Avahi", "/",
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"org.freedesktop.Avahi.Server", None)
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# Call any API, so we detect if avahi is even available or not
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self.avahiserver.GetAPIVersion()
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logging.debug("Connected to avahi")
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except Exception, e:
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self.dbus = None
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self.avahiserver = None
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logging.debug("Couldn't contact avahi: %s", str(e))
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self.reset_state()
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@staticmethod
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def default_uri():
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if os.path.exists('/var/lib/xen'):
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if (os.path.exists('/dev/xen/evtchn') or
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os.path.exists("/proc/xen")):
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return 'xen:///'
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if (os.path.exists("/usr/bin/qemu") or
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os.path.exists("/usr/bin/qemu-kvm") or
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os.path.exists("/usr/bin/kvm") or
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os.path.exists("/usr/libexec/qemu-kvm") or
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glob.glob("/usr/bin/qemu-system-*")):
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return "qemu:///system"
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if (os.path.exists("/usr/lib/libvirt/libvirt_lxc") or
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os.path.exists("/usr/lib64/libvirt/libvirt_lxc")):
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return "lxc:///"
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return None
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def cancel(self, ignore1=None, ignore2=None):
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logging.debug("Cancelling open connection")
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self.close()
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self.emit("cancelled")
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return 1
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def close(self, ignore1=None, ignore2=None):
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logging.debug("Closing open connection")
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self.topwin.hide()
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if self.browser:
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for obj, sig in self.browser_sigs:
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obj.disconnect(sig)
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self.browser_sigs = []
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self.browser = None
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def show(self, parent, reset_state=True):
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logging.debug("Showing open connection")
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if reset_state:
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self.reset_state()
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self.topwin.set_transient_for(parent)
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self.topwin.present()
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self.start_browse()
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def _cleanup(self):
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pass
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def set_initial_state(self):
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self.widget("connect").grab_default()
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combo = self.widget("hypervisor")
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# [connection ID, label]
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model = Gtk.ListStore(int, str)
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def _add_hv_row(rowid, config_name, label):
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if (not self.config.default_hvs or
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config_name in self.config.default_hvs):
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model.append([rowid, label])
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_add_hv_row(HV_QEMU, "qemu", "QEMU/KVM")
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_add_hv_row(HV_QEMU_SESSION, "qemu", "QEMU/KVM " + _("user session"))
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_add_hv_row(HV_XEN, "xen", "Xen")
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_add_hv_row(HV_LXC, "lxc", "LXC (" + _("Linux Containers") + ")")
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_add_hv_row(HV_BHYVE, "bhyve", "Bhyve")
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combo.set_model(model)
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uiutil.init_combo_text_column(combo, 1)
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combo = self.widget("transport")
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model = Gtk.ListStore(str)
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model.append(["SSH"])
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model.append(["TCP (SASL, Kerberos)"])
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model.append(["SSL/TLS " + _("with certificates")])
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combo.set_model(model)
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uiutil.init_combo_text_column(combo, 0)
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# Hostname combo box entry
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hostListModel = Gtk.ListStore(str, str, str)
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host = self.widget("hostname")
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host.set_model(hostListModel)
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host.set_entry_text_column(2)
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hostListModel.set_sort_column_id(2, Gtk.SortType.ASCENDING)
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def reset_state(self):
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self.set_default_hypervisor()
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self.widget("transport").set_active(0)
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self.widget("autoconnect").set_sensitive(True)
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self.widget("autoconnect").set_active(True)
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self.widget("hostname").get_model().clear()
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self.widget("hostname").get_child().set_text("")
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self.widget("connect-remote").set_active(False)
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self.widget("username-entry").set_text("")
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self.connect_remote_toggled(self.widget("connect-remote"))
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self.populate_uri()
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def is_remote(self):
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# Whether user is requesting a remote connection
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return self.widget("connect-remote").get_active()
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def set_default_hypervisor(self):
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default = self.default_uri()
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if not default or default.startswith("qemu"):
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uiutil.set_list_selection(self.widget("hypervisor"), HV_QEMU)
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elif default.startswith("xen"):
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uiutil.set_list_selection(self.widget("hypervisor"), HV_XEN)
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def add_service(self, interface, protocol, name, typ, domain, flags):
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ignore = flags
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try:
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# Async service resolving
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res = self.avahiserver.ServiceResolverNew("(iisssiu)",
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interface, protocol,
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name, typ, domain, -1, 0)
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resint = Gio.DBusProxy.new_sync(self.dbus, 0, None,
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"org.freedesktop.Avahi", res,
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"org.freedesktop.Avahi.ServiceResolver",
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None)
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def cb(proxy, sender, signal, args):
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ignore = proxy
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ignore = sender
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if signal == "Found":
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self.add_conn_to_list(*args)
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sig = resint.connect("g-signal", cb)
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self.browser_sigs.append((resint, sig))
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except Exception, e:
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logging.exception(e)
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def remove_service(self, interface, protocol, name, typ, domain, flags):
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ignore = domain
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ignore = protocol
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ignore = flags
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ignore = interface
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ignore = typ
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try:
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model = self.widget("hostname").get_model()
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name = str(name)
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for row in model:
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if row[0] == name:
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model.remove(row.iter)
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except Exception, e:
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logging.exception(e)
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def add_conn_to_list(self, interface, protocol, name, typ, domain,
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host, aprotocol, address, port, text, flags):
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ignore = domain
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ignore = protocol
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ignore = flags
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ignore = interface
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ignore = typ
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ignore = text
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ignore = aprotocol
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ignore = port
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try:
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model = self.widget("hostname").get_model()
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for row in model:
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if row[2] == str(name):
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# Already present in list
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return
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host = self.sanitize_hostname(str(host))
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model.append([str(address), str(host), str(name)])
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except Exception, e:
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logging.exception(e)
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def start_browse(self):
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if self.browser or not self.avahiserver:
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return
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# Call method to create new browser, and get back an object path for it.
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interface = -1 # physical interface to use? -1 is unspec
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protocol = 0 # 0 = IPv4, 1 = IPv6, -1 = Unspecified
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service = '_libvirt._tcp' # Service name to poll for
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flags = 0 # Extra option flags
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domain = "" # Domain to browse in. NULL uses default
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bpath = self.avahiserver.ServiceBrowserNew("(iissu)",
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interface, protocol,
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service, domain, flags)
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# Create browser interface for the new object
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self.browser = Gio.DBusProxy.new_sync(self.dbus, 0, None,
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"org.freedesktop.Avahi", bpath,
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"org.freedesktop.Avahi.ServiceBrowser",
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None)
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def cb(proxy, sender, signal, args):
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ignore = proxy
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ignore = sender
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if signal == "ItemNew":
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self.add_service(*args)
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elif signal == "ItemRemove":
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self.remove_service(*args)
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self.browser_sigs.append((self.browser,
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self.browser.connect("g-signal", cb)))
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def hostname_combo_changed(self, src):
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model = src.get_model()
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txt = src.get_child().get_text()
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row = None
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for currow in model:
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if currow[2] == txt:
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row = currow
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break
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if not row:
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return
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ip = row[0]
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host = row[1]
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entry = host
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if not entry:
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entry = ip
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self.widget("hostname").get_child().set_text(entry)
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def hostname_changed(self, src_ignore):
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self.populate_uri()
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def hypervisor_changed(self, src):
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ignore = src
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hv = uiutil.get_list_selection(self.widget("hypervisor"))
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is_session = (hv == HV_QEMU_SESSION)
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uiutil.set_grid_row_visible(
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self.widget("session-warning-box"), is_session)
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uiutil.set_grid_row_visible(
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self.widget("connect-remote"), not is_session)
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uiutil.set_grid_row_visible(
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self.widget("username-entry"), not is_session)
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uiutil.set_grid_row_visible(
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self.widget("hostname"), not is_session)
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uiutil.set_grid_row_visible(
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self.widget("transport"), not is_session)
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if is_session:
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self.widget("connect-remote").set_active(False)
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self.populate_uri()
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def username_changed(self, src_ignore):
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self.populate_uri()
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def connect_remote_toggled(self, src_ignore):
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is_remote = self.is_remote()
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self.widget("hostname").set_sensitive(is_remote)
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self.widget("transport").set_sensitive(is_remote)
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self.widget("autoconnect").set_active(not is_remote)
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self.widget("username-entry").set_sensitive(is_remote)
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self.populate_default_user()
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self.populate_uri()
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def transport_changed(self, src_ignore):
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self.populate_default_user()
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self.populate_uri()
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def populate_uri(self):
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uri = self.generate_uri()
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self.widget("uri-entry").set_text(uri)
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def populate_default_user(self):
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conn = self.widget("transport").get_active()
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default_user = default_conn_user(conn)
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self.widget("username-entry").set_text(default_user)
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def generate_uri(self):
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hv = uiutil.get_list_selection(self.widget("hypervisor"))
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conn = self.widget("transport").get_active()
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host = self.widget("hostname").get_child().get_text().strip()
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user = self.widget("username-entry").get_text()
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is_remote = self.is_remote()
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hvstr = ""
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if hv == HV_XEN:
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hvstr = "xen"
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elif hv == HV_QEMU or hv == HV_QEMU_SESSION:
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hvstr = "qemu"
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elif hv == HV_BHYVE:
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hvstr = "bhyve"
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else:
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hvstr = "lxc"
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addrstr = ""
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if user:
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addrstr += user + "@"
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if host.count(":") > 1:
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host = "[%s]" % host
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addrstr += host
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hoststr = ""
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if not is_remote:
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hoststr = ":///"
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else:
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if conn == CONN_TLS:
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hoststr = "+tls://"
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if conn == CONN_SSH:
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hoststr = "+ssh://"
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if conn == CONN_TCP:
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hoststr = "+tcp://"
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hoststr += addrstr + "/"
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uri = hvstr + hoststr
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if hv in (HV_QEMU, HV_BHYVE):
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uri += "system"
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elif hv == HV_QEMU_SESSION:
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uri += "session"
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return uri
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def validate(self):
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is_remote = self.is_remote()
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host = self.widget("hostname").get_child().get_text()
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if is_remote and not host:
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return self.err.val_err(_("A hostname is required for "
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"remote connections."))
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return True
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def open_conn(self, ignore):
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if not self.validate():
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return
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auto = False
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if self.widget("autoconnect").get_sensitive():
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auto = self.widget("autoconnect").get_active()
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uri = self.generate_uri()
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logging.debug("Generate URI=%s, auto=%s", uri, auto)
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self.close()
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self.emit("completed", uri, auto)
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def sanitize_hostname(self, host):
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if host == "linux" or host == "localhost":
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host = ""
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if host.startswith("linux-"):
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tmphost = host[6:]
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try:
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long(tmphost)
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host = ""
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except ValueError:
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pass
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if host:
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host = self.check_resolve_host(host)
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return host
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def check_resolve_host(self, host):
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# Try to resolve hostname
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#
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# Avahi always uses 'hostname.local', but for some reason
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# fedora 12 out of the box can't resolve '.local' names
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# Attempt to resolve the name. If it fails, remove .local
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# if present, and try again
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if host.endswith(".local"):
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if self.can_resolve_local is False:
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host = host[:-6]
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elif self.can_resolve_local is None:
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try:
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socket.getaddrinfo(host, None)
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except:
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logging.debug("Couldn't resolve host '%s'. Stripping "
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"'.local' and retrying.", host)
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self.can_resolve_local = False
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host = self.check_resolve_host(host[:-6])
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else:
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self.can_resolve_local = True
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else:
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if self.can_resolve_hostname is False:
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host = ""
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elif self.can_resolve_hostname is None:
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try:
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socket.getaddrinfo(host, None)
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except:
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logging.debug("Couldn't resolve host '%s'. Disabling "
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"host name resolution, only using IP addr",
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host)
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self.can_resolve_hostname = False
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else:
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self.can_resolve_hostname = True
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return host
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