nmd

#!/usr/bin/env python3
# encoding:utf8
"""NetworkManager command line dmenu script.

To add new connections or enable/disable networking requires policykit
permissions setup per:
https://wiki.archlinux.org/index.php/NetworkManager#Set_up_PolicyKit_permissions

OR running the script as root

Add dmenu options and default terminal if desired to
~/.config/networkmanager-dmenu/nmd.ini

"""
import pathlib
import struct
import configparser
import locale
import os
from os.path import basename, expanduser
import shlex
from shutil import which
import sys
from time import sleep
import uuid
import subprocess

# pylint: disable=import-error
import gi
gi.require_version('NM', '1.0')
from gi.repository import GLib, NM  # noqa pylint: disable=wrong-import-position
# pylint: enable=import-error

ENV = os.environ.copy()
ENC = locale.getpreferredencoding()

CONF = configparser.ConfigParser()
CONF.read(expanduser("~/.config/networkmanager-dmenu/nmd.ini"))


def cli_args():
    """ Don't override dmenu_cmd function arguments with CLI args. Removes -l
    and -p if those are passed on the command line.

    Exception: if -l is passed and dmenu_command is not defined, assume that the
    user wants to switch dmenu to the vertical layout and include -l.

        Returns: List of additional CLI arguments

    """
    args = sys.argv[1:]
    cmd = CONF.get('dmenu', 'dmenu_command', fallback=False)
    if "-l" in args or "-p" in args:
        for nope in ['-l', '-p'] if cmd is not False else ['-p']:
            try:
                nope_idx = args.index(nope)
                del args[nope_idx]
                del args[nope_idx]
            except ValueError:
                pass
    return args


def dmenu_pass(command, color):
    """Check if dmenu passphrase patch is applied and return the correct command
    line arg list

    Args: command - string
          color - obscure color string
    Returns: list or None

    """
    if command != 'dmenu':
        return None
    try:
        # Check for dmenu password patch
        dm_patch = b'P' in subprocess.run(["dmenu", "-h"],
                                          capture_output=True,
                                          check=False).stderr
    except FileNotFoundError:
        dm_patch = False
    return ["-P"] if dm_patch else ["-nb", color, "-nf", color]


def dmenu_cmd(num_lines, prompt="Networks", active_lines=None):
    """Parse config.ini for menu options

    Args: args - num_lines: number of lines to display
                 prompt: prompt to show
                 active_lines: list of line numbers to tag as active
    Returns: command invocation (as a list of strings) for example
                ["dmenu", "-l", "<num_lines>", "-p", "<prompt>", "-i"]

    """
    # Create command string
    commands = {"dmenu": ["-p", str(prompt)],
                "rofi": ["-dmenu", "-p", str(prompt)],
                "bemenu": ["-p", str(prompt)],
                "wofi": ["-p", str(prompt)],
                "fuzzel": ["-p", str(prompt), "--log-level", "none"]}
    command = shlex.split(CONF.get('dmenu', 'dmenu_command', fallback="dmenu"))
    cmd_base = basename(command[0])
    command.extend(cli_args())
    command.extend(commands.get(cmd_base, []))
    # Highlighting
    highlight = CONF.getboolean('dmenu', 'highlight', fallback=False)
    if highlight is True:
        # Rofi
        if cmd_base == "rofi" and active_lines:
            command.extend(["-a", ",".join([str(num) for num in active_lines])])
        # Wofi
        if cmd_base == "wofi" and active_lines:
            # add '-q' to prevent tag name and properties of pango markup from searchable
            command.extend(["-m", "-q"])
    # Passphrase prompts
    obscure = CONF.getboolean('dmenu_passphrase', 'obscure', fallback=False)
    if prompt == "Passphrase" and obscure is True:
        obscure_color = CONF.get('dmenu_passphrase', 'obscure_color', fallback='#222222')
        pass_prompts = {"dmenu": dmenu_pass(cmd_base, obscure_color),
                        "rofi": ['-password'],
                        "bemenu": ['-x'],
                        "wofi": ['-P'],
                        "fuzzel": ['--password']}
        command.extend(pass_prompts.get(cmd_base, []))
    return command


def choose_adapter(client):
    """If there is more than one wifi adapter installed, ask which one to use

    """
    devices = client.get_devices()
    devices = [i for i in devices if i.get_device_type() == NM.DeviceType.WIFI]
    if not devices:
        return None
    if len(devices) == 1:
        return devices[0]
    device_names = "\n".join([d.get_iface() for d in devices])
    sel = subprocess.run(dmenu_cmd(len(devices), "CHOOSE ADAPTER:"),
                         capture_output=True,
                         check=False,
                         env=ENV,
                         input=device_names,
                         encoding=ENC).stdout
    if not sel.strip():
        sys.exit()
    devices = [i for i in devices if i.get_iface() == sel.strip()]
    if len(devices) != 1:
        raise ValueError(f"Selection was ambiguous: '{str(sel.strip())}'")
    return devices[0]


def is_installed(cmd):
    """Check if a utility is installed"""
    return which(cmd) is not None


def is_running(cmd):
    try:
        subprocess.check_output(["pidof", cmd])
    except subprocess.CalledProcessError:
        return False
    else:
        return True


def bluetooth_get_enabled():
    """Check if bluetooth is enabled. Try bluetoothctl first, then rfkill.

    Returns None if no bluetooth device was found.
    """
    if is_installed('bluetoothctl') and is_running('bluetoothd'):
        # Times out in 2 seconds, otherwise bluetoothctl will hang if bluetooth
        # service isn't running.
        try:
            res = subprocess.run(['bluetoothctl', 'show'],
                                 timeout=2,
                                 capture_output=True,
                                 text=True)
            return "Powered: yes" in res.stdout
        except subprocess.TimeoutExpired:
            pass
    # See https://www.kernel.org/doc/Documentation/ABI/stable/sysfs-class-rfkill
    for path in pathlib.Path('/sys/class/rfkill/').glob('rfkill*'):
        if (path / 'type').read_text().strip() == 'bluetooth':
            return (path / 'soft').read_text().strip() == '0'
    return None


def create_other_actions(client):
    """Return list of other actions that can be taken

    """
    networking_enabled = client.networking_get_enabled()
    networking_action = "Disable" if networking_enabled else "Enable"

    wifi_enabled = client.wireless_get_enabled()
    wifi_action = "Disable" if wifi_enabled else "Enable"

    bluetooth_enabled = bluetooth_get_enabled()
    bluetooth_action = "Disable" if bluetooth_enabled else "Enable"

    actions = [Action(f"{wifi_action} Wifi", toggle_wifi,
                      not wifi_enabled),
               Action(f"{networking_action} Networking",
                      toggle_networking, not networking_enabled)]
    if bluetooth_enabled is not None:
        actions.append(Action(f"{bluetooth_action} Bluetooth",
                              toggle_bluetooth, not bluetooth_enabled))
    actions += [Action("Launch Connection Manager", launch_connection_editor),
                Action("Delete a Connection", delete_connection)]
    if wifi_enabled:
        actions.append(Action("Rescan Wifi Networks", rescan_wifi))
    return actions


def rescan_wifi():
    """
    Rescan Wifi Access Points
    """
    delay = CONF.getint('nmdm', 'rescan_delay', fallback=5)
    for dev in CLIENT.get_devices():
        if gi.repository.NM.DeviceWifi == type(dev):
            try:
                dev.request_scan_async(None, rescan_cb, None)
                LOOP.run()
                sleep(delay)
                notify("Wifi scan complete")
                main()
            except gi.repository.GLib.Error as err:
                # Too frequent rescan error
                notify("Wifi rescan failed", urgency="critical")
                if not err.code == 6:  # pylint: disable=no-member
                    raise err


def rescan_cb(dev, res, data):
    """Callback for rescan_wifi. Just for notifications

    """
    if dev.request_scan_finish(res) is True:
        notify("Wifi scan running...")
    else:
        notify("Wifi scan failed", urgency="critical")
    LOOP.quit()


def ssid_to_utf8(nm_ap):
    """ Convert binary ssid to utf-8 """
    ssid = nm_ap.get_ssid()
    if not ssid:
        return ""
    ret = NM.utils_ssid_to_utf8(ssid.get_data())
    return ret


def prompt_saved(saved_cons):
    """Prompt for a saved connection."""
    actions = create_saved_actions(saved_cons)
    sel = get_selection(actions)
    sel()


def ap_security(nm_ap):
    """Parse the security flags to return a string with 'WPA2', etc. """
    flags = nm_ap.get_flags()
    wpa_flags = nm_ap.get_wpa_flags()
    rsn_flags = nm_ap.get_rsn_flags()
    sec_str = ""
    if ((flags & getattr(NM, '80211ApFlags').PRIVACY) and
            (wpa_flags == 0) and (rsn_flags == 0)):
        sec_str = " WEP"
    if wpa_flags:
        sec_str = " WPA1"
    if rsn_flags & getattr(NM, '80211ApSecurityFlags').KEY_MGMT_PSK:
        sec_str += " WPA2"
    if rsn_flags & getattr(NM, '80211ApSecurityFlags').KEY_MGMT_SAE:
        sec_str += " WPA3"
    if ((wpa_flags & getattr(NM, '80211ApSecurityFlags').KEY_MGMT_802_1X) or
            (rsn_flags & getattr(NM, '80211ApSecurityFlags').KEY_MGMT_802_1X)):
        sec_str += " 802.1X"
    if ((wpa_flags & getattr(NM, '80211ApSecurityFlags').KEY_MGMT_OWE) or
            (rsn_flags & getattr(NM, '80211ApSecurityFlags').KEY_MGMT_OWE)):
        sec_str += " OWE"

    # If there is no security use "--"
    if sec_str == "":
        sec_str = "--"
    return sec_str.lstrip()


class Action():  # pylint: disable=too-few-public-methods
    """Helper class to execute functions from a string variable"""
    def __init__(self,
                 name,
                 func,
                 args=None,
                 active=False):
        self.name = name
        self.func = func
        self.is_active = active
        if args is None:
            self.args = None
        elif isinstance(args, list):
            self.args = args
        else:
            self.args = [args]

    def __str__(self):
        return self.name

    def __call__(self):
        if self.args is None:
            self.func()
        else:
            self.func(*self.args)


def conn_matches_adapter(conn, adapter):
    """Return True if the connection is applicable for the given adapter.

    There seem to be two ways for a connection specify what interface it belongs
    to:

    - By setting 'mac-address' in [wifi] to the adapter's MAC
    - By setting 'interface-name` in [connection] to the adapter's name.

    Depending on how the connection was added, it seems like either
    'mac-address', 'interface-name' or neither of both is set.
    """
    # [wifi] mac-address
    setting_wireless = conn.get_setting_wireless()
    mac = setting_wireless.get_mac_address()
    if mac is not None:
        return mac == adapter.get_permanent_hw_address()

    # [connection] interface-name
    setting_connection = conn.get_setting_connection()
    interface = setting_connection.get_interface_name()
    if interface is not None:
        return interface == adapter.get_iface()

    # Neither is set, let's assume this connection is for multiple/all adapters.
    return True


def process_ap(nm_ap, is_active, adapter):
    """Activate/Deactivate a connection and get password if required"""
    if is_active:
        CLIENT.deactivate_connection_async(nm_ap, None, deactivate_cb, nm_ap)
        LOOP.run()
    else:
        conns_cur = [i for i in CONNS if
                     i.get_setting_wireless() is not None and
                     conn_matches_adapter(i, adapter)]
        con = nm_ap.filter_connections(conns_cur)
        if len(con) > 1:
            raise ValueError("There are multiple connections possible")

        if len(con) == 1:
            CLIENT.activate_connection_async(con[0], adapter, nm_ap.get_path(),
                                             None, activate_cb, nm_ap)
            LOOP.run()
        else:
            if ap_security(nm_ap) != "--":
                password = get_passphrase()
            else:
                password = ""
            set_new_connection(nm_ap, password, adapter)


def activate_cb(dev, res, data):
    """Notification if activate connection completed successfully

    """
    try:
        conn = dev.activate_connection_finish(res)
    except GLib.Error:
        conn = None
    if conn is not None:
        notify(f"Activated {conn.get_id()}")
    else:
        notify(f"Problem activating {data.get_id()}", urgency="critical")
    LOOP.quit()


def deactivate_cb(dev, res, data):
    """Notification if deactivate connection completed successfully

    """
    if dev.deactivate_connection_finish(res) is True:
        notify(f"Deactivated {data.get_id()}")
    else:
        notify(f"Problem deactivating {data.get_id()}", urgency="critical")
    LOOP.quit()


def process_vpngsm(con, activate):
    """Activate/deactive VPN or GSM connections"""
    if activate:
        CLIENT.activate_connection_async(con, None, None,
                                         None, activate_cb, con)
    else:
        CLIENT.deactivate_connection_async(con, None, deactivate_cb, con)
    LOOP.run()

def strength_bars(signal_strength):
    bars = NM.utils_wifi_strength_bars(signal_strength)
    wifi_chars = CONF.get("dmenu", "wifi_chars", fallback=False)
    if wifi_chars:
        bars = "".join([wifi_chars[i] for i, j in enumerate(bars) if j == '*'])
    return bars


def strength_icon(signal_strength):
    wifi_icons = CONF.get("dmenu", "wifi_icons", fallback=False)
    if wifi_icons:
        return wifi_icons[round(signal_strength / 100 * (len(wifi_icons) - 1))]
    return ""


def create_ap_actions(aps, active_ap, active_connection, adapter):  # noqa pylint: disable=too-many-locals,line-too-long
    """For each AP in a list, create the string and its attached function
    (activate/deactivate)

    """
    active_ap_bssid = active_ap.get_bssid() if active_ap is not None else ""

    names = [ssid_to_utf8(ap) for ap in aps]
    max_len_name = max([len(name) for name in names]) if names else 0
    secs = [ap_security(ap) for ap in aps]
    max_len_sec = max([len(sec) for sec in secs]) if secs else 0

    ap_actions = []

    if CONF.getboolean("dmenu", "compact", fallback=False):
        format = CONF.get("dmenu", "format", fallback="{name}  {sec}  {bars}")
    else:
        format = CONF.get("dmenu", "format", fallback="{name:<{max_len_name}s}  {sec:<{max_len_sec}s} {bars:>4}")

    for nm_ap, name, sec in zip(aps, names, secs):
        is_active = nm_ap.get_bssid() == active_ap_bssid
        signal_strength = nm_ap.get_strength()
        bars = strength_bars(signal_strength)
        icon = strength_icon(signal_strength)
        action_name = format.format(name=name, sec=sec, signal=signal_strength, bars=bars, icon=icon,
                                    max_len_name=max_len_name, max_len_sec=max_len_sec)
        if is_active:
            ap_actions.append(Action(action_name, process_ap,
                                     [active_connection, True, adapter],
                                     active=True))
        else:
            ap_actions.append(Action(action_name, process_ap,
                                     [nm_ap, False, adapter]))
    return ap_actions


def create_vpn_actions(vpns, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) for VPN connections.

    """
    active_vpns = [i for i in active if i.get_vpn()]
    return _create_vpngsm_actions(vpns, active_vpns, "VPN")


def create_vlan_actions(vlans, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) for VLAN connections.

    """
    active_vlans = [i for i in active if "vlan" == i.get_connection_type()]
    return _create_vpngsm_actions(vlans, active_vlans, "VLAN")


def create_wireguard_actions(wgs, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) for Wireguard connections.

    """
    active_wgs = [i for i in active if i.get_connection_type() == "wireguard"]
    return _create_vpngsm_actions(wgs, active_wgs, "Wireguard")


def create_eth_actions(eths, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) for Ethernet connections.

    """
    active_eths = [i for i in active if 'ethernet' in i.get_connection_type()]
    return _create_vpngsm_actions(eths, active_eths, "Eth")


def create_gsm_actions(gsms, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) GSM connections."""
    active_gsms = [i for i in active if
                   i.get_connection() is not None and
                   i.get_connection().is_type(NM.SETTING_GSM_SETTING_NAME)]
    return _create_vpngsm_actions(gsms, active_gsms, "GSM")


def create_blue_actions(blues, active):
    """Create the list of strings to display with associated function
    (activate/deactivate) Bluetooth connections."""
    active_blues = [i for i in active if
                    i.get_connection() is not None and
                    i.get_connection().is_type(NM.SETTING_BLUETOOTH_SETTING_NAME)]
    return _create_vpngsm_actions(blues, active_blues, "Bluetooth")


def create_saved_actions(saved):
    """Create the list of strings to display with associated function
    (activate/deactivate) for VPN connections.

    """
    return _create_vpngsm_actions(saved, [], "SAVED")


def _create_vpngsm_actions(cons, active_cons, label):
    active_con_ids = [a.get_id() for a in active_cons]
    actions = []
    for con in cons:
        is_active = con.get_id() in active_con_ids
        action_name = f"{con.get_id()}:{label}"
        if is_active:
            active_connection = [a for a in active_cons
                                 if a.get_id() == con.get_id()]
            if len(active_connection) != 1:
                raise ValueError(f"Multiple active connections match {con.get_id()}")
            active_connection = active_connection[0]

            actions.append(Action(action_name, process_vpngsm,
                                  [active_connection, False], active=True))
        else:
            actions.append(Action(action_name, process_vpngsm,
                                  [con, True]))
    return actions


def create_wwan_actions(client):
    """Create WWWAN actions

    """
    wwan_enabled = client.wwan_get_enabled()
    wwan_action = "Disable" if wwan_enabled else "Enable"
    return [Action(f"{wwan_action} WWAN", toggle_wwan, not wwan_enabled)]


def combine_actions(eths, aps, vlans, vpns, wgs, gsms, blues, wwan, others, saved):
    # pylint: disable=too-many-arguments
    """Combine all given actions into a list of actions.

    Args: args - eths: list of Actions
                 aps: list of Actions
                 vpns: list of Actions
                 gsms: list of Actions
                 blues: list of Actions
                 wwan: list of Actions
                 others: list of Actions
    """
    compact = CONF.getboolean("dmenu", "compact", fallback=False)
    empty_action = [Action('', None)] if not compact else []
    all_actions = []
    all_actions += eths + empty_action if eths else []
    all_actions += aps + empty_action if aps else []
    all_actions += vlans + empty_action if vlans else []
    all_actions += vpns + empty_action if vpns else []
    all_actions += wgs + empty_action if wgs else []
    all_actions += gsms + empty_action if (gsms and wwan) else []
    all_actions += blues + empty_action if blues else []
    all_actions += wwan + empty_action if wwan else []
    all_actions += others + empty_action if others else []
    all_actions += saved + empty_action if saved else []
    return all_actions


def get_wofi_highlight_markup(action):
    highlight_fg = CONF.get('dmenu', 'highlight_fg', fallback=None)
    highlight_bg = CONF.get('dmenu', 'highlight_bg', fallback=None)
    highlight_bold = CONF.getboolean('dmenu', 'highlight_bold', fallback=True)

    style = ""
    if highlight_fg:
        style += f'foreground="{highlight_fg}" '
    if highlight_bg:
        style += f'background="{highlight_bg}" '
    if highlight_bold:
        style += 'weight="bold" '

    return f"<span {style}>" + str(action) + "</span>"


def get_selection(all_actions):
    """Spawn dmenu for selection and execute the associated action."""
    command = shlex.split(CONF.get("dmenu", "dmenu_command", fallback="dmenu"))
    cmd_base = basename(command[0])
    active_chars = CONF.get("dmenu", "active_chars", fallback="==")
    highlight = CONF.getboolean("dmenu", "highlight", fallback=False)
    inp = []

    if highlight is True and cmd_base == "rofi":
        inp = [str(action) for action in all_actions]
    elif highlight is True and cmd_base == "wofi":
        inp = [get_wofi_highlight_markup(action) if action.is_active else str(action)
               for action in all_actions]
    else:
        inp = [(active_chars if action.is_active else " " * len(active_chars)) + " " + str(action)
               for action in all_actions]
    active_lines = [index for index, action in enumerate(all_actions)
                    if action.is_active]

    command = dmenu_cmd(len(inp), active_lines=active_lines)
    sel = subprocess.run(command,
                         capture_output=True,
                         check=False,
                         input="\n".join(inp),
                         encoding=ENC,
                         env=ENV).stdout

    if not sel.rstrip():
        sys.exit()

    if highlight is True and cmd_base == "rofi":
        action = [i for i in all_actions if str(i).strip() == sel.strip()]
    elif highlight is True and cmd_base == "wofi":
        action = [i for i in all_actions
                  if str(i).strip() == sel.strip() or
                     get_wofi_highlight_markup(i) == sel.strip()]
    else:
        action = [i for i in all_actions
                  if ((str(i).strip() == str(sel.strip())
                       and not i.is_active) or
                      (active_chars + " " + str(i) == str(sel.rstrip('\n'))
                       and i.is_active))]
    if len(action) != 1:
        raise ValueError(f"Selection was ambiguous: '{str(sel.strip())}'")
    return action[0]


def toggle_networking(enable):
    """Enable/disable networking

    Args: enable - boolean

    """
    toggle = GLib.Variant.new_tuple(GLib.Variant.new_boolean(enable))
    try:
        CLIENT.dbus_call(NM.DBUS_PATH, NM.DBUS_INTERFACE, "Enable", toggle,
                         None, -1, None, None, None)
    except AttributeError:
        # Workaround for older versions of python-gobject
        CLIENT.networking_set_enabled(enable)
    notify(f"Networking {'enabled' if enable is True else 'disabled'}")


def toggle_wifi(enable):
    """Enable/disable Wifi

    Args: enable - boolean

    """
    toggle = GLib.Variant.new_boolean(enable)
    try:
        CLIENT.dbus_set_property(NM.DBUS_PATH, NM.DBUS_INTERFACE, "WirelessEnabled", toggle,
                                 -1, None, None, None)
    except AttributeError:
        # Workaround for older versions of python-gobject
        CLIENT.wireless_set_enabled(enable)
    notify(f"Wifi {'enabled' if enable is True else 'disabled'}")


def toggle_wwan(enable):
    """Enable/disable WWAN

    Args: enable - boolean

    """
    toggle = GLib.Variant.new_boolean(enable)
    try:
        CLIENT.dbus_set_property(NM.DBUS_PATH, NM.DBUS_INTERFACE, "WwanEnabled", toggle,
                                 -1, None, None, None)
    except AttributeError:
        # Workaround for older versions of python-gobject
        CLIENT.wwan_set_enabled(enable)
    notify(f"Wwan {'enabled' if enable is True else 'disabled'}")


def toggle_bluetooth(enable):
    """Enable/disable Bluetooth

    Try bluetoothctl first, then drop to rfkill if it's not installed or
    bluetooth service isn't running.

    Args: enable - boolean

    References:
    https://github.com/blueman-project/blueman/blob/master/blueman/plugins/mechanism/RfKill.py
    https://www.kernel.org/doc/html/latest/driver-api/rfkill.html
    https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/include/uapi/linux/rfkill.h?h=v5.8.9

    """
    if is_installed('bluetoothctl') and is_running('bluetoothd'):
        # Times out in 2 seconds, otherwise bluetoothctl will hang if bluetooth
        # service isn't running.
        try:
            res = subprocess.run(['bluetoothctl', 'power', 'on' if enable is True else 'off'],
                                 timeout=2,
                                 capture_output=True)
        except subprocess.TimeoutExpired:
            pass
        try:
            res = subprocess.run(['bluetoothctl', 'show'],
                                 timeout=2,
                                 capture_output=True,
                                 text=True)
            if "Powered: yes" in res.stdout:
                notify("Bluetooth enabled")
                return
        except subprocess.TimeoutExpired:
            pass
    # Now try using rfkill
    type_bluetooth = 2
    op_change_all = 3
    idx = 0
    soft_state = 0 if enable else 1
    hard_state = 0

    data = struct.pack("IBBBB", idx, type_bluetooth, op_change_all,
                       soft_state, hard_state)

    try:
        with open('/dev/rfkill', 'r+b', buffering=0) as rff:
            rff.write(data)
    except PermissionError:
        notify("Lacking permission to write to /dev/rfkill.",
               "Check README for configuration options.",
               urgency="critical")
    else:
        notify(f"Bluetooth {'enabled' if enable else 'disabled'}")


def launch_connection_editor():
    """Launch nmtui or the gui nm-connection-editor

    """
    terminal = CONF.get("editor", "terminal", fallback="xterm")
    gui_if_available = CONF.getboolean("editor", "gui_if_available", fallback=True)
    gui = CONF.get("editor", "gui", fallback="nm-connection-editor")
    if gui_if_available is True:
        if is_installed(gui):
            subprocess.run(gui, check=False)
            return
    if is_installed("nmtui"):
        subprocess.run([terminal, "-e", "nmtui"], check=False)
        return
    notify("No network connection editor installed", urgency="critical")


def get_passphrase():
    """Get a password

    Returns: string

    """
    pinentry = CONF.get("dmenu", "pinentry", fallback=None)
    if pinentry:
        description = CONF.get("pinentry", "description", fallback="Get network password")
        prompt = CONF.get("pinentry", "prompt", fallback="Password: ")
        pin = ""
        out = subprocess.run(pinentry,
                             capture_output=True,
                             check=False,
                             encoding=ENC,
                             input=f"setdesc {description}\nsetprompt {prompt}\ngetpin\n").stdout
        if out:
            res = [i for i in out.split("\n") if i.startswith("D ")]
            if res and res[0].startswith("D "):
                pin = res[0].split("D ")[1]
        return pin
    return subprocess.run(dmenu_cmd(0, "Passphrase"),
                          stdin=subprocess.DEVNULL,
                          capture_output=True,
                          check=False,
                          encoding=ENC).stdout


def delete_connection():
    """Display list of NM connections and delete the selected one

    """
    conn_acts = [Action(i.get_id(), i.delete_async, args=[None, delete_cb, None]) for i in CONNS]
    conn_names = "\n".join([str(i) for i in conn_acts])
    sel = subprocess.run(dmenu_cmd(len(conn_acts), "CHOOSE CONNECTION TO DELETE:"),
                         capture_output=True,
                         check=False,
                         input=conn_names,
                         encoding=ENC,
                         env=ENV).stdout
    if not sel.strip():
        sys.exit()
    action = [i for i in conn_acts if str(i) == sel.rstrip("\n")]
    if len(action) != 1:
        raise ValueError(f"Selection was ambiguous: {str(sel)}")
    action[0]()
    LOOP.run()


def delete_cb(dev, res, data):
    """Notification if delete completed successfully

    """
    if dev.delete_finish(res) is True:
        notify(f"Deleted {dev.get_id()}")
    else:
        notify(f"Problem deleting {dev.get_id()}", urgency="critical")
    LOOP.quit()


def set_new_connection(nm_ap, nm_pw, adapter):
    """Setup a new NetworkManager connection

    Args: ap - NM.AccessPoint
          pw - string

    """
    nm_pw = str(nm_pw).strip()
    profile = create_wifi_profile(nm_ap, nm_pw, adapter)
    CLIENT.add_and_activate_connection_async(profile, adapter, nm_ap.get_path(),
                                             None, verify_conn, profile)
    LOOP.run()


def create_wifi_profile(nm_ap, password, adapter):
    # pylint: disable=line-too-long
    # noqa From https://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/examples/python/gi/add_connection.py
    # noqa and https://cgit.freedesktop.org/NetworkManager/NetworkManager/tree/examples/python/dbus/add-wifi-psk-connection.py
    # pylint: enable=line-too-long
    """Create the NM profile given the AP and passphrase"""
    ap_sec = ap_security(nm_ap)
    profile = NM.SimpleConnection.new()

    s_con = NM.SettingConnection.new()
    s_con.set_property(NM.SETTING_CONNECTION_ID, ssid_to_utf8(nm_ap))
    s_con.set_property(NM.SETTING_CONNECTION_UUID, str(uuid.uuid4()))
    s_con.set_property(NM.SETTING_CONNECTION_TYPE, "802-11-wireless")
    profile.add_setting(s_con)

    s_wifi = NM.SettingWireless.new()
    s_wifi.set_property(NM.SETTING_WIRELESS_SSID, nm_ap.get_ssid())
    s_wifi.set_property(NM.SETTING_WIRELESS_MODE, 'infrastructure')
    s_wifi.set_property(NM.SETTING_WIRELESS_MAC_ADDRESS, adapter.get_permanent_hw_address())
    profile.add_setting(s_wifi)

    s_ip4 = NM.SettingIP4Config.new()
    s_ip4.set_property(NM.SETTING_IP_CONFIG_METHOD, "auto")
    profile.add_setting(s_ip4)

    s_ip6 = NM.SettingIP6Config.new()
    s_ip6.set_property(NM.SETTING_IP_CONFIG_METHOD, "auto")
    profile.add_setting(s_ip6)

    if ap_sec != "--":
        s_wifi_sec = NM.SettingWirelessSecurity.new()
        if "WPA" in ap_sec:
            if "WPA3" in ap_sec:
                s_wifi_sec.set_property(NM.SETTING_WIRELESS_SECURITY_KEY_MGMT,
                                        "sae")
            else:
                s_wifi_sec.set_property(NM.SETTING_WIRELESS_SECURITY_KEY_MGMT,
                                        "wpa-psk")
            s_wifi_sec.set_property(NM.SETTING_WIRELESS_SECURITY_AUTH_ALG,
                                    "open")
            s_wifi_sec.set_property(NM.SETTING_WIRELESS_SECURITY_PSK, password)
        elif "WEP" in ap_sec:
            s_wifi_sec.set_property(NM.SETTING_WIRELESS_SECURITY_KEY_MGMT,
                                    "None")
            s_wifi_sec.set_property(NM.SETTING_WIRELESS_SECURITY_WEP_KEY_TYPE,
                                    NM.WepKeyType.PASSPHRASE)
            s_wifi_sec.set_wep_key(0, password)
        profile.add_setting(s_wifi_sec)

    return profile


def verify_conn(client, result, data):
    """Callback function for add_and_activate_connection_async

    Check if connection completes successfully. Delete the connection if there
    is an error.

    """
    try:
        act_conn = client.add_and_activate_connection_finish(result)
        conn = act_conn.get_connection()
        if not all([conn.verify(),
                    conn.verify_secrets(),
                    data.verify(),
                    data.verify_secrets()]):
            raise GLib.Error
        notify(f"Added {conn.get_id()}")
    except GLib.Error:
        try:
            notify(f"Connection to {conn.get_id()} failed",
                   urgency="critical")
            conn.delete_async(None, None, None)
        except UnboundLocalError:
            pass
    finally:
        LOOP.quit()


def create_ap_list(adapter, active_connections):
    """Generate list of access points. Remove duplicate APs , keeping strongest
    ones and the active AP

    Args: adapter
          active_connections - list of all active connections
    Returns: aps - list of access points
             active_ap - active AP
             active_ap_con - active Connection
             adapter

    """
    aps = []
    ap_names = []
    active_ap = adapter.get_active_access_point()
    aps_all = sorted(adapter.get_access_points(),
                     key=lambda a: a.get_strength(), reverse=True)
    conns_cur = [i for i in CONNS if
                 i.get_setting_wireless() is not None and
                 conn_matches_adapter(i, adapter)]
    try:
        ap_conns = active_ap.filter_connections(conns_cur)
        active_ap_name = ssid_to_utf8(active_ap)
        active_ap_con = [active_conn for active_conn in active_connections
                         if active_conn.get_connection() in ap_conns]
    except AttributeError:
        active_ap_name = None
        active_ap_con = []
    if len(active_ap_con) > 1:
        raise ValueError("Multiple connection profiles match"
                         " the wireless AP")
    active_ap_con = active_ap_con[0] if active_ap_con else None
    for nm_ap in aps_all:
        ap_name = ssid_to_utf8(nm_ap)
        if nm_ap != active_ap and ap_name == active_ap_name:
            # Skip adding AP if it's not active but same name as active AP
            continue
        if ap_name not in ap_names:
            ap_names.append(ap_name)
            aps.append(nm_ap)
    return aps, active_ap, active_ap_con, adapter


def notify(message, details=None, urgency="low"):
    """Use notify-send if available for notifications

    """
    delay = CONF.getint('nmdm', 'rescan_delay', fallback=5)
    args = ["-u", urgency, "-a", "networkmanager-dmenu",
            "-t", str(delay * 1000), message]
    if details is not None:
        args.append(details)
    if is_installed("notify-send"):
        subprocess.run(["notify-send"] + args, check=False)


def run():  # pylint: disable=too-many-locals
    """Main script entrypoint"""
    try:
        subprocess.check_output(["pidof", "NetworkManager"])
    except subprocess.CalledProcessError:
        notify("WARNING: NetworkManager don't seems to be running")
        print("WARNING: NetworkManager don't seems to be running")
    active = CLIENT.get_active_connections()
    adapter = choose_adapter(CLIENT)
    if adapter:
        ap_actions = create_ap_actions(*create_ap_list(adapter, active))
    else:
        ap_actions = []

    vpns = [i for i in CONNS if i.is_type(NM.SETTING_VPN_SETTING_NAME)]
    try:
        wgs = [i for i in CONNS if i.is_type(NM.SETTING_WIREGUARD_SETTING_NAME)]
    except AttributeError:
        # Workaround for older versions of python-gobject with no wireguard support
        wgs = []
    eths = [i for i in CONNS if i.is_type(NM.SETTING_WIRED_SETTING_NAME)]
    vlans = [i for i in CONNS if i.is_type(NM.SETTING_VLAN_SETTING_NAME)]
    blues = [i for i in CONNS if i.is_type(NM.SETTING_BLUETOOTH_SETTING_NAME)]

    vpn_actions = create_vpn_actions(vpns, active)
    wg_actions = create_wireguard_actions(wgs, active)
    eth_actions = create_eth_actions(eths, active)
    vlan_actions = create_vlan_actions(vlans, active)
    blue_actions = create_blue_actions(blues, active)
    other_actions = create_other_actions(CLIENT)
    wwan_installed = is_installed("ModemManager")
    if wwan_installed:
        gsms = [i for i in CONNS if i.is_type(NM.SETTING_GSM_SETTING_NAME)]
        gsm_actions = create_gsm_actions(gsms, active)
        wwan_actions = create_wwan_actions(CLIENT)
    else:
        gsm_actions = []
        wwan_actions = []

    list_saved = CONF.getboolean('dmenu', 'list_saved', fallback=False)
    saved_cons = [i for i in CONNS if i not in vpns + wgs + eths + blues]
    if list_saved:
        saved_actions = create_saved_actions(saved_cons)
    else:
        saved_actions = [Action("Saved connections", prompt_saved, [saved_cons])]


    actions = combine_actions(eth_actions, ap_actions, vlan_actions, vpn_actions,
                              wg_actions, gsm_actions, blue_actions, wwan_actions,
                              other_actions, saved_actions)
    sel = get_selection(actions)
    sel()


def main():
    """Main. Enables script to be re-run after a wifi rescan

    """
    global CLIENT, CONNS, LOOP  # noqa pylint: disable=global-variable-undefined
    CLIENT = NM.Client.new(None)
    LOOP = GLib.MainLoop()
    CONNS = CLIENT.get_connections()

    run()


if __name__ == '__main__':
    main()

# vim: set et ts=4 sw=4 :