connect: Drop avahi support

Libvirtd can advertise itself over avahi. The feature is disabled by
default though and in practice I hear of no one actually using it
and frankly I don't think it's all that useful

The 'Open Connection' wizard has a disproportionate amount of code
devoted to this feature, but I don't think it's useful or worth
maintaining, so let's drop it
This commit is contained in:
Cole Robinson 2018-10-06 20:55:31 -04:00
parent 321ec81cb7
commit fc8f8d5d7e
2 changed files with 14 additions and 235 deletions

View File

@ -182,29 +182,6 @@
<property name="top_attach">3</property>
</packing>
</child>
<child>
<object class="GtkComboBox" id="hostname">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="has_entry">True</property>
<signal name="changed" handler="on_hostname_combo_changed" swapped="no"/>
<child internal-child="entry">
<object class="GtkEntry" id="combobox-entry">
<property name="can_focus">True</property>
<signal name="changed" handler="on_hostname_changed" swapped="no"/>
<child internal-child="accessible">
<object class="AtkObject" id="combobox-entry-atkobject">
<property name="AtkObject::accessible-name" translatable="yes">Hostname</property>
</object>
</child>
</object>
</child>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">4</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="label91">
<property name="visible">True</property>
@ -343,6 +320,17 @@ are very limited. &lt;/small&gt;</property>
<property name="top_attach">7</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="hostname">
<property name="visible">True</property>
<property name="can_focus">True</property>
<signal name="changed" handler="on_hostname_changed" swapped="no"/>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">4</property>
</packing>
</child>
</object>
<packing>
<property name="expand">False</property>

View File

@ -7,10 +7,8 @@
import glob
import os
import logging
import socket
import urllib.parse
from gi.repository import Gio
from gi.repository import Gtk
from . import uiutil
@ -47,7 +45,6 @@ class vmmConnect(vmmGObjectUI):
self.builder.connect_signals({
"on_hypervisor_changed": self.hypervisor_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,
@ -57,32 +54,7 @@ class vmmConnect(vmmGObjectUI):
"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
@ -113,12 +85,6 @@ class vmmConnect(vmmGObjectUI):
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):
logging.debug("Showing open connection")
@ -129,7 +95,6 @@ class vmmConnect(vmmGObjectUI):
self.reset_state()
self.topwin.set_transient_for(parent)
self.topwin.present()
self.start_browse()
def _cleanup(self):
pass
@ -161,19 +126,11 @@ class vmmConnect(vmmGObjectUI):
return model[it][0] == -1
combo.set_row_separator_func(sepfunc)
# 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("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("hostname").set_text("")
self.widget("connect-remote").set_active(False)
self.widget("username-entry").set_text("")
self.widget("uri-entry").set_text("")
@ -191,119 +148,6 @@ class vmmConnect(vmmGObjectUI):
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()
@ -351,7 +195,7 @@ class vmmConnect(vmmGObjectUI):
def generate_uri(self):
hv = uiutil.get_list_selection(self.widget("hypervisor"))
host = self.widget("hostname").get_child().get_text().strip()
host = self.widget("hostname").get_text().strip()
user = self.widget("username-entry").get_text()
is_remote = self.is_remote()
@ -390,7 +234,7 @@ class vmmConnect(vmmGObjectUI):
def validate(self):
is_remote = self.is_remote()
host = self.widget("hostname").get_child().get_text()
host = self.widget("hostname").get_text()
if is_remote and not host:
return self.err.val_err(_("A hostname is required for "
@ -439,56 +283,3 @@ class vmmConnect(vmmGObjectUI):
conn.connect_once("open-completed", self._conn_open_completed)
self.set_finish_cursor()
conn.open()
def sanitize_hostname(self, host):
if host == "linux" or host == "localhost":
host = ""
if host.startswith("linux-"):
tmphost = host[6:]
try:
int(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