310 lines
9 KiB
Text
310 lines
9 KiB
Text
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#!/usr/bin/env python
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"""NetworkManager command line dmenu script.
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To add new connections or enable/disable networking requires policykit
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permissions setup per:
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https://wiki.archlinux.org/index.php/NetworkManager#Set_up_PolicyKit_permissions
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OR running the script as root
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Add dmenu formatting options and default terminal if desired to
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~/.config/networkmanager-dmenu/config.ini
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"""
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import itertools
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from os.path import expanduser
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from subprocess import Popen, PIPE
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import sys
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try:
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import configparser as configparser
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except ImportError:
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import ConfigParser as configparser
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def dmenu_cmd(num_lines, prompt="Networks"):
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"""Parse config.ini if it exists and add options to the dmenu command
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Args: args - num_lines: number of lines to display
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prompt: prompt to show
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Returns: command invocation (as a list of strings) for
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dmenu -l <num_lines> -p <prompt> -i ...
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"""
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return ["rofi", "-dmenu", "-i", "-l", str(num_lines), "-p", str(prompt)]
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def choose_adapter():
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"""If there is more than one wifi adapter installed, ask which one to use
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"""
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adps = ["nmcli", "device", "status"]
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a = Popen(adps, stdout=PIPE).communicate()[0].decode().split('\n')
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all_adps = [i.split()[0] for i in a if 'wifi' in i]
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if len(all_adps) <= 1:
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return all_adps[0].strip()
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all_adps_bytes = "\n".join(all_adps).encode()
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sel = Popen(dmenu_cmd(len(all_adps), "CHOOSE ADAPTER:"),
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stdin=PIPE,
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stdout=PIPE).communicate(input=all_adps_bytes)[0].decode()
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if not sel.strip():
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sys.exit()
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return sel.strip()
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def current_conns():
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"""Get list of current NetworkManager connections (ssid:security)
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Returns: list of strings: ['firecat4153:WPA2', 'firecat4153x:WEP'...]
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"""
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conns = ["nmcli", "-t", "-f", "name,type", "connection"]
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return Popen(conns, stdout=PIPE).communicate()[0].decode().split('\n')
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def current_ssids(adapter):
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"""Get list of current SSIDs seen by NetworkManager and order by signal
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strength
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Returns: list -
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["firecat4153:WPA2","firecat4153-guest:", "firecat4153x:WPA2"]
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"""
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scan = ["nmcli", "-t", "-f", "ssid,security,signal",
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"device", "wifi", "list", "ifname", adapter]
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res = Popen(scan, stdout=PIPE).communicate()[0].decode().split("\n")
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del res[-1]
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res = [i.rsplit(':', 1) for i in res]
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res = sorted(res, key=lambda x: x[1], reverse=True)
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res = unique_ssid(res)
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return [i[0].replace("'", "") for i in res]
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def unique_ssid(conns):
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"""Filters the list of ids, so that duplicate ids will only show the one
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with the greatest strength. The list of ssids is already sorted by strength
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so this just deletes any duplicates after the first item.
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"""
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ssids = []
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for conn in conns:
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if conn[0] in ssids:
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del conns[conns.index(conn)]
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else:
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ssids.append(conn[0])
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return conns
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def vpn_connections(conns):
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"""Parse list of current connections for VPNs
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Args: conns - ['ssid:security', 'firecat4153:WPA2', ...]
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Returns: list of VPN connection names ['pia_us_west',...]
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"""
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conns = [i.split(':') for i in conns if i]
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return [i[0] for i in conns if i and 'vpn' in i[1]]
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def get_network_status():
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"""Get current status of networking
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Returns: string 'Enable' or 'Disable',
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"""
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stat = ["nmcli", "networking"]
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res = Popen(stat, stdout=PIPE).communicate()[0]
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if 'enabled' in res.decode():
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return 'Disable'
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else:
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return 'Enable'
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def get_active_connections():
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"""Get currently active connections
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Returns: list of strings
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"""
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status = ["nmcli", "-t", "-f", "name", "connection",
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"show", "--active"]
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active = Popen(status, stdout=PIPE).communicate()[0]
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active = active.decode().split('\n')
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del active[-1]
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return active
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def mark_active(conns, active):
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"""Given a list of connections, mark currently active connections
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Args: conns - list of strings
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Returns: list of strings (active prepended with a '**')
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"""
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conn_t = [i.rsplit(":", 1)[0] for i in conns]
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act = [i for i in conn_t if i and i in active]
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for i, conn in enumerate(conn_t):
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if conn in act:
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conns[i] = "**{}".format(conns[i])
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return conns
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def other_actions():
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"""Return list of other actions that can be taken
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"""
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return ["{} Networking".format(get_network_status()),
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"Launch Connection Manager"]
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def get_selection(ssids, vpns, other):
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"""Combine the arg lists and send to dmenu for selection.
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Args: args - ssids: list of strings
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vpns: list of strings
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other: list of strings
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Returns: selection (string)
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"""
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active = get_active_connections()
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vpns = ["{}:VPN".format(i) for i in vpns]
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inp = mark_active(ssids, active) + [""] + \
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mark_active(vpns, active) + [""] + other
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inp_bytes = "\n".join(inp).encode()
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sel = Popen(dmenu_cmd(len(inp)),
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stdin=PIPE,
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stdout=PIPE).communicate(input=inp_bytes)[0].decode()
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if not sel.strip():
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sys.exit()
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return sel.strip()
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def toggle_existing(conn):
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"""Get conn status, then toggle connection up or down if it's not
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'activated'
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Args: conn - string
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"""
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conn_status = ["nmcli", "-t", "-f", "GENERAL", "connection", "show", conn]
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res = Popen(conn_status, stdout=PIPE).communicate()[0]
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if 'activated' not in res.decode():
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updown = 'up'
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else:
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updown = 'down'
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conn_string = ["nmcli", "connection", updown, "id", conn]
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Popen(conn_string, stdout=PIPE).communicate()
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def toggle_networking(sel):
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"""Enable/disable networking
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Args: sel - string ('Enable Networking' or 'Disable Networking')
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"""
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if sel.startswith('Enable'):
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updown = 'on'
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else:
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updown = 'off'
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net = ["nmcli", "networking", updown]
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Popen(net, stdout=PIPE).communicate()
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def launch_connection_editor():
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"""Launch nmtui or the gui nm-connection-editor
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"""
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conf = configparser.ConfigParser()
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terminal = "xterm"
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gui_if_available = "True"
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conf.read(expanduser("~/.config/networkmanager-dmenu/config.ini"))
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try:
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editor = conf.items("editor")
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except configparser.NoSectionError:
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conf = False
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if conf:
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opts = {str(k): str(v) for (k, v) in editor}
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if "terminal" in opts:
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terminal = opts["terminal"]
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if "gui_if_available" in opts:
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gui_if_available = opts["gui_if_available"]
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if gui_if_available == "True":
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try:
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Popen(["nm-connection-editor"]).communicate()
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except OSError:
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Popen([terminal, "-e", "nmtui"]).communicate()
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else:
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Popen([terminal, "-e", "nmtui"]).communicate()
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def get_passphrase():
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"""Get a password
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Returns: string
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"""
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return Popen(dmenu_cmd(0, "Passphrase"),
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stdin=PIPE, stdout=PIPE).communicate()[0].decode()
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def set_new_connection(ssid, pw):
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"""Setup a new NetworkManager connection
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Args: ssid - string
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pw - string
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"""
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pw = str(pw).strip()
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new_conn = ["nmcli", "device", "wifi", "connect", ssid, "password", pw]
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res = Popen(new_conn, stdout=PIPE).communicate()
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# Delete connection if it fails somehow.
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# With nmcli 0.9.10, you occasionally get an error message:
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# "Error: Failed to add/activate new connection: Unknown error", which
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# doesn't always mean the connection failed, so test for 'activated' or
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# 'activating' in the connection status as well
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status = ["nmcli", "-t", "-f", "GENERAL", "connection", "show", ssid]
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active = Popen(status, stdout=PIPE).communicate()[0]
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# Delete connections with errors
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if "Error" in res and \
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('activating' not in active or 'activated' not in active):
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delete = ["nmcli", "connection", "delete", ssid]
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Popen(delete, stdout=PIPE).communicate()
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def run():
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adapter = choose_adapter()
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conns = current_conns()
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vpns = vpn_connections(conns)
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ssids = current_ssids(adapter)
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other = other_actions()
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sel = get_selection(ssids, vpns, other)
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if sel in other:
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# Parse other actions
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if 'Networking' in sel:
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toggle_networking(sel)
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elif 'Launch' in sel:
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launch_connection_editor()
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sys.exit()
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elif sel in ssids:
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# Set ssid, security if selection is an SSID
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ssid, security = sel.split(":")
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ssid = ssid.strip("'").strip().replace("**", "")
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security = security.strip()
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elif sel.replace(":VPN", "").replace("**", "") in vpns:
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# Select VPN connection (sel="pia_us_west:VPN")
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ssid = sel.replace(":VPN", "").replace("**", "")
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else:
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sys.exit()
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# Decide if selection is existing connection or new
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if ssid in [i.split(':')[0] for i in conns if i]:
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toggle_existing(ssid)
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else:
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if security:
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pw = get_passphrase()
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else:
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pw = ""
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set_new_connection(ssid, pw)
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if __name__ == '__main__':
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run()
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