def install_packages(pkg_names):
iface = QDBusInterface("com.linuxdeepin.softwarecenter_frontend",
"/com/linuxdeepin/softwarecenter_frontend", '',
QDBusConnection.sessionBus())
iface.asyncCall("install_pkgs", pkg_names)
iface.asyncCall("show_page", "install")
iface.asyncCall("raise_to_top")
def disable_zone(self):
try:
iface = QDBusInterface("com.deepin.daemon.Zone", "/com/deepin/daemon/Zone", '', QDBusConnection.sessionBus())
iface.asyncCall("EnableZoneDetected", False)
except:
pass
class NetworkInterfaces(QObject):
def __init__(self):
"""
NetworkInterfaces is a list of the plugged-in network connections.
```python
[{
"path": b"/org/freedesktop/NetworkManager/Devices/1"
"name": "Ethernet",
"address": "192.168.100.166" or "2001:0db8:85a3::8a2e:0370:7334"
}, {
...
}]
```
You can `networkInterfaces.observe(callback)` to get updates.
"""
super().__init__()
self._connections = []
#observers collection
self._callbacks = []
self.networkManager = QDBusInterface(
f"org.freedesktop.NetworkManager", #Service
f"/org/freedesktop/NetworkManager", #Path
f"org.freedesktop.NetworkManager", #Interface
QDBusConnection.systemBus(),
)
self.networkManager.setTimeout(10) #Set to 1000 after startup period.
#Retry. This doesn't connect the first time, no matter what the time limit is. I don't know why, probably something in the start-on-demand logic.
if not self.networkManager.isValid():
self.networkManager = QDBusInterface(
f"org.freedesktop.NetworkManager", #Service
f"/org/freedesktop/NetworkManager", #Path
f"org.freedesktop.NetworkManager", #Interface
QDBusConnection.systemBus(),
)
self.networkManager.setTimeout(10)
if not self.networkManager.isValid():
log.critical(f"Error: Can not connect to NetworkManager at {self.networkManager.service()}. ({self.networkManager.lastError().name()}: {self.networkManager.lastError().message()}) Try running `apt install network-manager`?")
raise Exception("D-Bus Setup Error")
self.networkManager.setTimeout(1000)
#The .connect call freezes if we don't do this, or if we do this twice.
#This bug was fixed by Qt 5.11.
QDBusConnection.systemBus().registerObject(
f"/org/freedesktop/NetworkManager",
self,
)
self._acquireInterfacesCall = QDBusPendingCallWatcher(
self.networkManager.asyncCall('GetDevices')
)
self._acquireInterfacesCall.finished.connect(self._acquireInterfaceData)
def _acquireInterfaceData(self, reply):
"""Continuation of __init__.
[DDR 2019-11-05] Note: In Qt 5.7, we can't just go
self._networkInterfaces['Device'].property(), like we could with
self._networkInterfaces['Device'].call(), because .property()
doesn't seem to work. afaik, it _should_ work, and the example in
https://stackoverflow.com/questions/20042995/error-getting-dbus-interface-property-with-qdbusinterface
which is directly relevant to our situation shows it working. Yet,
I cannot figure out how to port it to Python. So we do it manually
with the `'* property interface'`s.
Note: https://doc.qt.io/archives/qt-5.7/qnetworkinterface.html is
a thing. Shame it doesn't have notification events.
Command-line based examples:
docs: https://developer.gnome.org/NetworkManager/0.9/spec.html
org.freedesktop.NetworkManager.Device.Wired has ipv4/6 properties
gdbus introspect --system --dest org.freedesktop.NetworkManager.Device.Wired --object-path /org/freedesktop/NetworkManager/Device/Wired
- Get network interfaces:
> gdbus introspect --system --dest org.freedesktop.NetworkManager --object-path /org/freedesktop/NetworkManager
- Has ActivateConnection method in org.freedesktop.NetworkManager
- Has GetDevices method in org.freedesktop.NetworkManager
> gdbus call --system --dest org.freedesktop.NetworkManager --object-path /org/freedesktop/NetworkManager --method org.freedesktop.NetworkManager.GetDevices
- ([objectpath '/org/freedesktop/NetworkManager/Devices/0', '/org/freedesktop/NetworkManager/Devices/1', '/org/freedesktop/NetworkManager/Devices/2', '/org/freedesktop/NetworkManager/Devices/3'],)
> gdbus introspect --system --dest org.freedesktop.NetworkManager --object-path /org/freedesktop/NetworkManager/Devices/0
- This is apparently a network connection - in this case, loopback.
- Links to IPv4/6 config.
> gdbus introspect --system --dest org.freedesktop.NetworkManager --object-path /org/freedesktop/NetworkManager/Devices/1
- eth0
- is plugged in?
- org.freedesktop.NetworkManager.Device.Wired property Carrier
- [implements g interfaces] Filter org.freedesktop.NetworkManager.GetDevices to get the list of plugged-in interfaces.
> gdbus introspect --system --dest org.freedesktop.NetworkManager --object-path /org/freedesktop/NetworkManager/DHCP4Config/0
- yields org.freedesktop.NetworkManager.DHCP4Config
- from ip_address' Dhcp4Config property
- [implements g n lan IPv4 or v6] in properties & PropertiesChanged signal.
> gdbus introspect --system --dest org.freedesktop.NetworkManager --object-path /org/freedesktop/NetworkManager/IP6Config/2
- yields org.freedesktop.NetworkManager.IP6Config
- from ip_address' Ip6Config property
- [implements g n g n www IPv4 or v6] in Addresses (first item) & PropertiesChanged signal.
- has Disconnect method
- https://developer.gnome.org/NetworkManager/0.9/spec.html#org.freedesktop.NetworkManager.Device.Disconnect
> gdbus introspect --system --dest org.freedesktop.NetworkManager --object-path /org/freedesktop/NetworkManager/Devices/2
- eth1
> gdbus introspect --system --dest org.freedesktop.NetworkManager --object-path /org/freedesktop/NetworkManager/Devices/3
- usb0
"""
reply = QDBusPendingReply(reply)
if reply.isError():
raise DBusException("%s: %s" % (reply.error().name(), reply.error().message()))
reply = reply.value()
self._networkInterfaces = [{
'Device': QDBusInterface( #Provides node.
f"org.freedesktop.NetworkManager", #Service
devicePath, #Path
f"org.freedesktop.NetworkManager.Device", #Interface
QDBusConnection.systemBus(),
),
'Device.Wired': QDBusInterface( #Provides node.
f"org.freedesktop.NetworkManager", #Service
devicePath, #Path
f"org.freedesktop.NetworkManager.Device.Wired", #Interface
QDBusConnection.systemBus(),
),
'Device property interface': QDBusInterface( #Provides interface to get properties of previous node, because `.property()` is broken.
"org.freedesktop.NetworkManager", #Service
devicePath, #Path
"org.freedesktop.DBus.Properties",#Interface
QDBusConnection.systemBus()
),
} for devicePath in reply ]
for interfaces in self._networkInterfaces:
for networkInterface in interfaces.values():
networkInterface.setTimeout(1000)
if not networkInterface.isValid():
log.critical(f"Error: Can not connect to NetworkManager at {networkInterface.service()}. ({networkInterface.lastError().name()}: {networkInterface.lastError().message()}) Try running `apt install network-manager`?")
raise Exception("D-Bus Setup Error")
#Deadlock fix as above.
QDBusConnection.systemBus().registerObject(
interfaces['Device'].path(), self )
#Use above interface to look up the IP address interfaces.
interfaces['Ip4Config'] = QDBusInterface( #Provides interface to get properties of previous node, because `.property()` is broken.
"org.freedesktop.NetworkManager", #Service
QDBusReply(interfaces['Device property interface'].call('Get', #Method
'org.freedesktop.NetworkManager.Device', 'Ip4Config' )).value(), #Interface, Property → Path
"org.freedesktop.NetworkManager.IP4Config", #Interface
QDBusConnection.systemBus()
)
interfaces['Ip4Config property interface'] = QDBusInterface( #Provides interface to get properties of previous node, because `.property()` is broken.
"org.freedesktop.NetworkManager", #Service
interfaces['Ip4Config'].path(), #Path
"org.freedesktop.DBus.Properties",#Interface
QDBusConnection.systemBus()
)
interfaces['Ip6Config'] = QDBusInterface( #Provides interface to get properties of previous node, because `.property()` is broken.
"org.freedesktop.NetworkManager", #Service
QDBusReply(interfaces['Device property interface'].call('Get', #Method
'org.freedesktop.NetworkManager.Device', 'Ip6Config' )).value(), #Interface, Property → Path
"org.freedesktop.NetworkManager.IP6Config", #Interface
QDBusConnection.systemBus()
)
interfaces['Ip6Config property interface'] = QDBusInterface( #Provides interface to get properties of previous node, because `.property()` is broken.
"org.freedesktop.NetworkManager", #Service
interfaces['Ip6Config'].path(), #Path
"org.freedesktop.DBus.Properties",#Interface
QDBusConnection.systemBus()
)
#Subscribe to network update signals, for ip address and carrier status.
QDBusConnection.systemBus().connect(
f"org.freedesktop.NetworkManager", #Service
interfaces['Device'].path(),
f"org.freedesktop.NetworkManager.Device", #Interface
'PropertiesChanged', #Signal
self.__interfacePropertiesChangedEvent,
)
QDBusConnection.systemBus().connect(
f"org.freedesktop.NetworkManager", #Service
interfaces['Device'].path(),
f"org.freedesktop.NetworkManager.Device.Wired", #Interface
'PropertiesChanged', #Signal
self.__interfacePropertiesChangedEvent,
)
QDBusConnection.systemBus().connect( #untested, don't know how to change ip4 address
f"org.freedesktop.NetworkManager", #Service
QDBusReply(interfaces['Device property interface'].call('Get',
'org.freedesktop.NetworkManager.Device', 'Dhcp4Config' ) ).value(), #Interface, Property → Path
f"org.freedesktop.NetworkManager.Dhcp4Config", #Interface
'PropertiesChanged', #Signal
self.__interfacePropertiesChangedEvent,
)
QDBusConnection.systemBus().connect( #untested, don't know how to change ip6 address
f"org.freedesktop.NetworkManager", #Service
QDBusReply(interfaces['Device property interface'].call('Get',
'org.freedesktop.NetworkManager.Device', 'Dhcp6Config' ) ).value(), #Interface, Property → Path
f"org.freedesktop.NetworkManager.Dhcp6Config", #Interface
'PropertiesChanged', #Signal
self.__interfacePropertiesChangedEvent,
)
self.__rescan()
def __getitem__(self, i):
return self._connections[i]
def __repr__(self):
#pdb uses repr instad of str (which imo is more appropriate for an interactive debugging session)
return f'{type(self)} ({self._connections})'
def observe(self, callback):
"""Add a function to get called when a volume is mounted or unmounted.
The added function is immediately invoked."""
assert callable(callback), f"Callback is not callable. (Expected function, got {callback}.)"
self._callbacks += [callback]
callback(self._connections)
def unobserve(self, callback):
"""Stop a function from getting called when a volume is mounted or unmounted."""
assert callable(callback), f"Callback is not callable. (Expected function, got {callback}.)"
self._callbacks = list(filter(
lambda existingCallback: existingCallback != callback,
self._callbacks ))
@pyqtSlot('QDBusMessage')
def __interfacePropertiesChangedEvent(self, msg):
log.info(f'Rescanning, network change detected. ({msg.arguments()})')
self.__rescan()
def __rescan(self):
self._connections.clear()
for interfaces in self._networkInterfaces:
carrier = QDBusReply(
interfaces['Device property interface'].call('Get',
'org.freedesktop.NetworkManager.Device.Wired', 'Carrier' ) ) #Interface, Property
if carrier.isValid() and carrier.value():
try:
addr = IPv4Address(
QDBusReply(
interfaces['Device property interface'].call(
'Get', #Method
'org.freedesktop.NetworkManager.Device', #Interface
'Ip4Address', #Property
)
).value()
)
addr = IPv4Address('.'.join(reversed(str(addr).split('.')))) #So close. Truly, if there's two ways of representing information… (note: This is actually Python's fault here, the number parses fine in a browser address bar.)
except AddressValueError:
try:
#"Array of tuples of IPv4 address/prefix/gateway. All 3 elements of each tuple are in network byte order. Essentially: [(addr, prefix, gateway), (addr, prefix, gateway), ...]"
# -- https://developer.gnome.org/NetworkManager/0.9/spec.html
addr = IPv6Address(bytes(
QDBusReply(
interfaces['Ip6Config property interface'].call(
'Get', #Method
'org.freedesktop.NetworkManager.IP6Config', #Interface
'Addresses', #Property
)
).value()[-1][0]
))
except (AddressValueError, IndexError):
addr = None
interface = QDBusReply(
interfaces['Device property interface'].call(
'Get', #Method
'org.freedesktop.NetworkManager.Device', #Interface
'Interface', #Property
)
).value()
if addr:
self._connections.append({
'path': interfaces['Device'].path(),
'name': defaultdict(
lambda: 'generic connection',
{'e': 'ethernet', 'u': 'usb'}
)[interface[0]],
'address': addr,
})
log.info(f'conns: {self._connections}')
for callback in self._callbacks:
callback(self._connections)
def install_packages(pkg_names):
iface = QDBusInterface("com.linuxdeepin.softwarecenter_frontend", "/com/linuxdeepin/softwarecenter_frontend", '', QDBusConnection.sessionBus())
iface.asyncCall("install_pkgs", pkg_names)
iface.asyncCall("show_page", "install")
iface.asyncCall("raise_to_top")
