[RFC] get ip addresses through connectivity manager, and get gateway ip as well

[Grimler91]

Through connectivity manager we can get both ipv4 and ipv6 addresses, and can drop the use of the deprecated Formatter.formatIpAddress().

With both changes we get something like:

$ termux-wifi-connectioninfo 
{
  "ip": "fe80::7cf7:74ff:fe65:52be",
  "ip": "192.168.1.224",
  "ip": "fd6e:e697:d22e:0:7cf7:74ff:fe65:52be",
  "ip": "fd6e:e697:d22e:0:d536:328f:b0f:1a32",
  "gateway": "192.168.1.1",
  "bssid": "02:00:00:00:00:00",
  "frequency_mhz": 2452,
  "link_speed_mbps": 78,
  "mac_address": "02:00:00:00:00:00",
  "network_id": -1,
  "rssi": -57,
  "ssid": "<unknown ssid>",
  "ssid_hidden": false,
  "supplicant_state": "COMPLETED"
}

Going from just one ip field to several will likely break some user scripts though. Maybe we should keep printing the IPV4 address as "ip" : ... and then all of them as "ip 1" : ..., "ip 2" : ... and so on?

[thunder-coding]

I do not agree with having multiple values for the same key. Most JSON tools including jq are just going to end up with just one value for the ip key, maybe we could go with keeping the older ip key and have a separate array, ips containing all these details

[luizluca]

How about adding two new props:

$ termux-wifi-connectioninfo 
{
       "ip": "192.0.2.4",
        ...
        "ipv4-address": [
                {
                        "address": "192.0.2.4",
                        "mask": 24
                }
        ],
        "ipv6-address": [
                {
                        "address": "2001:DB8:1234:1000::757",
                        "mask": 128
                }
        ],
       ...
}

It can handle multiple ipv4 or ipv6 addresses.