%PDF-
%PDF-
Mini Shell
Mini Shell
#
# Copyright (C) 2006, 2013 Red Hat, Inc.
# Copyright (C) 2006 Daniel P. Berrange <berrange@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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 glob
import os
import logging
import socket
import urllib
from gi.repository import Gio
from gi.repository import GObject
from gi.repository import Gtk
from . import uiutil
from .baseclass import vmmGObjectUI
(HV_QEMU,
HV_XEN,
HV_LXC,
HV_QEMU_SESSION,
HV_BHYVE,
HV_VZ,
HV_CUSTOM) = range(7)
(CONN_SSH,
CONN_TCP,
CONN_TLS) = range(3)
def current_user():
try:
import getpass
return getpass.getuser()
except Exception:
return ""
def default_conn_user(conn):
if conn == CONN_SSH:
return "root"
return current_user()
class vmmConnect(vmmGObjectUI):
__gsignals__ = {
"completed": (GObject.SignalFlags.RUN_FIRST, None, [str, bool]),
"cancelled": (GObject.SignalFlags.RUN_FIRST, None, []),
}
def __init__(self):
vmmGObjectUI.__init__(self, "connect.ui", "vmm-open-connection")
self.builder.connect_signals({
"on_hypervisor_changed": self.hypervisor_changed,
"on_transport_changed": self.transport_changed,
"on_hostname_combo_changed": self.hostname_combo_changed,
"on_connect_remote_toggled": self.connect_remote_toggled,
"on_username_entry_changed": self.username_changed,
"on_hostname_changed": self.hostname_changed,
"on_cancel_clicked": self.cancel,
"on_connect_clicked": self.open_conn,
"on_vmm_open_connection_delete_event": self.cancel,
})
self.browser = None
self.browser_sigs = []
# Set this if we can't resolve 'hostname.local': means avahi
# prob isn't configured correctly, and we should strip .local
self.can_resolve_local = None
# Plain hostname resolve failed, means we should just use IP addr
self.can_resolve_hostname = None
self.set_initial_state()
try:
self.dbus = Gio.bus_get_sync(Gio.BusType.SYSTEM, None)
self.avahiserver = Gio.DBusProxy.new_sync(self.dbus, 0, None,
"org.freedesktop.Avahi", "/",
"org.freedesktop.Avahi.Server", None)
# Call any API, so we detect if avahi is even available or not
self.avahiserver.GetAPIVersion()
logging.debug("Connected to avahi")
except Exception as e:
self.dbus = None
self.avahiserver = None
logging.debug("Couldn't contact avahi: %s", str(e))
self.reset_state()
@staticmethod
def default_uri():
if (os.path.exists("/usr/bin/qemu") or
os.path.exists("/usr/bin/qemu-kvm") or
os.path.exists("/usr/bin/kvm") or
os.path.exists("/usr/bin/qemu-system-x86_64") or
os.path.exists("/usr/bin/qemu-system-i386") or
os.path.exists("/usr/libexec/qemu-kvm") or
glob.glob("/usr/bin/qemu-system-*")):
return "qemu:///system"
if os.path.exists('/var/lib/xen'):
if (os.path.exists('/dev/xen/evtchn') or
os.path.exists("/proc/xen")):
return 'xen:///'
return None
def cancel(self, ignore1=None, ignore2=None):
logging.debug("Cancelling open connection")
self.close()
self.emit("cancelled")
return 1
def close(self, ignore1=None, ignore2=None):
logging.debug("Closing open connection")
self.topwin.hide()
if self.browser:
for obj, sig in self.browser_sigs:
obj.disconnect(sig)
self.browser_sigs = []
self.browser = None
def show(self, parent, reset_state=True):
logging.debug("Showing open connection")
if reset_state:
self.reset_state()
self.topwin.set_transient_for(parent)
self.topwin.present()
self.start_browse()
def _cleanup(self):
pass
def set_initial_state(self):
self.widget("connect").grab_default()
combo = self.widget("hypervisor")
# [connection ID, label]
model = Gtk.ListStore(int, str)
def _add_hv_row(rowid, config_name, label):
if (not self.config.default_hvs or
not config_name or
config_name in self.config.default_hvs):
model.append([rowid, label])
_add_hv_row(HV_QEMU, "qemu", "QEMU/KVM")
_add_hv_row(HV_QEMU_SESSION, "qemu", "QEMU/KVM " + _("user session"))
_add_hv_row(HV_XEN, "xen", "Xen")
_add_hv_row(HV_LXC, "lxc", "Libvirt-LXC (Linux Containers)")
_add_hv_row(HV_BHYVE, "bhyve", "Bhyve")
_add_hv_row(HV_VZ, "vz", "Virtuozzo")
_add_hv_row(-1, None, "")
_add_hv_row(HV_CUSTOM, None, "Custom URI...")
combo.set_model(model)
uiutil.init_combo_text_column(combo, 1)
def sepfunc(model, it):
return model[it][0] == -1
combo.set_row_separator_func(sepfunc)
combo = self.widget("transport")
model = Gtk.ListStore(str)
model.append(["SSH"])
model.append(["TCP (SASL, Kerberos)"])
model.append(["SSL/TLS " + _("with certificates")])
combo.set_model(model)
uiutil.init_combo_text_column(combo, 0)
# Hostname combo box entry
hostListModel = Gtk.ListStore(str, str, str)
host = self.widget("hostname")
host.set_model(hostListModel)
host.set_entry_text_column(2)
hostListModel.set_sort_column_id(2, Gtk.SortType.ASCENDING)
def reset_state(self):
self.set_default_hypervisor()
self.widget("transport").set_active(0)
self.widget("autoconnect").set_sensitive(True)
self.widget("autoconnect").set_active(True)
self.widget("hostname").get_model().clear()
self.widget("hostname").get_child().set_text("")
self.widget("connect-remote").set_active(False)
self.widget("username-entry").set_text("")
self.widget("uri-entry").set_text("")
self.connect_remote_toggled(self.widget("connect-remote"))
self.populate_uri()
def is_remote(self):
# Whether user is requesting a remote connection
return self.widget("connect-remote").get_active()
def set_default_hypervisor(self):
default = self.default_uri()
if not default or default.startswith("qemu"):
uiutil.set_list_selection(self.widget("hypervisor"), HV_QEMU)
elif default.startswith("xen"):
uiutil.set_list_selection(self.widget("hypervisor"), HV_XEN)
def add_service(self, interface, protocol, name, typ, domain, flags):
ignore = flags
try:
# Async service resolving
res = self.avahiserver.ServiceResolverNew("(iisssiu)",
interface, protocol,
name, typ, domain, -1, 0)
resint = Gio.DBusProxy.new_sync(self.dbus, 0, None,
"org.freedesktop.Avahi", res,
"org.freedesktop.Avahi.ServiceResolver",
None)
def cb(proxy, sender, signal, args):
ignore = proxy
ignore = sender
if signal == "Found":
self.add_conn_to_list(*args)
sig = resint.connect("g-signal", cb)
self.browser_sigs.append((resint, sig))
except Exception as e:
logging.exception(e)
def remove_service(self, interface, protocol, name, typ, domain, flags):
ignore = domain
ignore = protocol
ignore = flags
ignore = interface
ignore = typ
try:
model = self.widget("hostname").get_model()
name = str(name)
for row in model:
if row[0] == name:
model.remove(row.iter)
except Exception as e:
logging.exception(e)
def add_conn_to_list(self, interface, protocol, name, typ, domain,
host, aprotocol, address, port, text, flags):
ignore = domain
ignore = protocol
ignore = flags
ignore = interface
ignore = typ
ignore = text
ignore = aprotocol
ignore = port
try:
model = self.widget("hostname").get_model()
for row in model:
if row[2] == str(name):
# Already present in list
return
host = self.sanitize_hostname(str(host))
model.append([str(address), str(host), str(name)])
except Exception as e:
logging.exception(e)
def start_browse(self):
if self.browser or not self.avahiserver:
return
# Call method to create new browser, and get back an object path for it.
interface = -1 # physical interface to use? -1 is unspec
protocol = 0 # 0 = IPv4, 1 = IPv6, -1 = Unspecified
service = '_libvirt._tcp' # Service name to poll for
flags = 0 # Extra option flags
domain = "" # Domain to browse in. NULL uses default
bpath = self.avahiserver.ServiceBrowserNew("(iissu)",
interface, protocol,
service, domain, flags)
# Create browser interface for the new object
self.browser = Gio.DBusProxy.new_sync(self.dbus, 0, None,
"org.freedesktop.Avahi", bpath,
"org.freedesktop.Avahi.ServiceBrowser",
None)
def cb(proxy, sender, signal, args):
ignore = proxy
ignore = sender
if signal == "ItemNew":
self.add_service(*args)
elif signal == "ItemRemove":
self.remove_service(*args)
self.browser_sigs.append((self.browser,
self.browser.connect("g-signal", cb)))
def hostname_combo_changed(self, src):
model = src.get_model()
txt = src.get_child().get_text()
row = None
for currow in model:
if currow[2] == txt:
row = currow
break
if not row:
return
ip = row[0]
host = row[1]
entry = host
if not entry:
entry = ip
self.widget("hostname").get_child().set_text(entry)
def hostname_changed(self, src_ignore):
self.populate_uri()
def hypervisor_changed(self, src):
ignore = src
hv = uiutil.get_list_selection(self.widget("hypervisor"))
is_session = hv == HV_QEMU_SESSION
is_custom = hv == HV_CUSTOM
show_remote = not is_session and not is_custom
uiutil.set_grid_row_visible(
self.widget("session-warning-box"), is_session)
uiutil.set_grid_row_visible(
self.widget("connect-remote"), show_remote)
uiutil.set_grid_row_visible(
self.widget("username-entry"), show_remote)
uiutil.set_grid_row_visible(
self.widget("hostname"), show_remote)
uiutil.set_grid_row_visible(
self.widget("transport"), show_remote)
if not show_remote:
self.widget("connect-remote").set_active(False)
uiutil.set_grid_row_visible(self.widget("uri-label"), not is_custom)
uiutil.set_grid_row_visible(self.widget("uri-entry"), is_custom)
if is_custom:
self.widget("uri-entry").grab_focus()
self.populate_uri()
def username_changed(self, src_ignore):
self.populate_uri()
def connect_remote_toggled(self, src_ignore):
is_remote = self.is_remote()
self.widget("hostname").set_sensitive(is_remote)
self.widget("transport").set_sensitive(is_remote)
self.widget("autoconnect").set_active(not is_remote)
self.widget("username-entry").set_sensitive(is_remote)
self.populate_default_user()
self.populate_uri()
def transport_changed(self, src_ignore):
self.populate_default_user()
self.populate_uri()
def populate_uri(self):
uri = self.generate_uri()
self.widget("uri-label").set_text(uri)
def populate_default_user(self):
conn = self.widget("transport").get_active()
default_user = default_conn_user(conn)
self.widget("username-entry").set_text(default_user)
def generate_uri(self):
hv = uiutil.get_list_selection(self.widget("hypervisor"))
conn = self.widget("transport").get_active()
host = self.widget("hostname").get_child().get_text().strip()
user = self.widget("username-entry").get_text()
is_remote = self.is_remote()
hvstr = ""
if hv == HV_XEN:
hvstr = "xen"
elif hv == HV_QEMU or hv == HV_QEMU_SESSION:
hvstr = "qemu"
elif hv == HV_BHYVE:
hvstr = "bhyve"
elif hv == HV_VZ:
hvstr = "vz"
else:
hvstr = "lxc"
addrstr = ""
if user:
addrstr += urllib.quote(user) + "@"
if host.count(":") > 1:
host = "[%s]" % host
addrstr += host
hoststr = ""
if not is_remote:
hoststr = ":///"
else:
if conn == CONN_TLS:
hoststr = "+tls://"
if conn == CONN_SSH:
hoststr = "+ssh://"
if conn == CONN_TCP:
hoststr = "+tcp://"
hoststr += addrstr + "/"
uri = hvstr + hoststr
if hv in (HV_QEMU, HV_BHYVE, HV_VZ):
uri += "system"
elif hv == HV_QEMU_SESSION:
uri += "session"
return uri
def validate(self):
is_remote = self.is_remote()
host = self.widget("hostname").get_child().get_text()
if is_remote and not host:
return self.err.val_err(_("A hostname is required for "
"remote connections."))
return True
def open_conn(self, ignore):
if not self.validate():
return
auto = False
if self.widget("autoconnect").get_sensitive():
auto = self.widget("autoconnect").get_active()
if self.widget("uri-label").is_visible():
uri = self.generate_uri()
else:
uri = self.widget("uri-entry").get_text()
logging.debug("Generate URI=%s, auto=%s", uri, auto)
self.close()
self.emit("completed", uri, auto)
def sanitize_hostname(self, host):
if host == "linux" or host == "localhost":
host = ""
if host.startswith("linux-"):
tmphost = host[6:]
try:
long(tmphost)
host = ""
except ValueError:
pass
if host:
host = self.check_resolve_host(host)
return host
def check_resolve_host(self, host):
# Try to resolve hostname
#
# Avahi always uses 'hostname.local', but for some reason
# fedora 12 out of the box can't resolve '.local' names
# Attempt to resolve the name. If it fails, remove .local
# if present, and try again
if host.endswith(".local"):
if self.can_resolve_local is False:
host = host[:-6]
elif self.can_resolve_local is None:
try:
socket.getaddrinfo(host, None)
except Exception:
logging.debug("Couldn't resolve host '%s'. Stripping "
"'.local' and retrying.", host)
self.can_resolve_local = False
host = self.check_resolve_host(host[:-6])
else:
self.can_resolve_local = True
else:
if self.can_resolve_hostname is False:
host = ""
elif self.can_resolve_hostname is None:
try:
socket.getaddrinfo(host, None)
except Exception:
logging.debug("Couldn't resolve host '%s'. Disabling "
"host name resolution, only using IP addr",
host)
self.can_resolve_hostname = False
else:
self.can_resolve_hostname = True
return host
Zerion Mini Shell 1.0