zxq9/inet_ext

inet_ext

inet extension, collections of convenient functions to use with inet

Usage

Get the lists of default gateway for each interfaces

1> inet_ext:gateways().
[{"en0","192.168.1.254"},{"en1","192.168.1.254"}]

To get the gateway for a specific interface uses the inet_ext:gateway_for/1 function.

Get internal address for a gateway

2> inet_ext:get_internal_address("192.168.1.254").
"192.168.1.22"

Get all routes

3> inet_ext:routes().
[{"lo0",
  {{65152,0,0,0,0,0,0,1},{65535,65535,65535,65535,0,0,0,0}}},
 {"lo0",{{127,0,0,1},{255,0,0,0}}},
 {"lo0",
  {{0,0,0,0,0,0,0,1},
   {65535,65535,65535,65535,65535,65535,65535,65535}}},
 {"en0",{{192,168,1,41},{255,255,255,0}}},
 {"en0",
  {{10753,3637,35380,28048,9323,2852,13025,48991},
   {65535,65535,65535,65535,0,0,0,0}}},
 {"en0",
  {{10753,3637,35380,28048,44679,41983,65072,60656},
   {65535,65535,65535,65535,0,0,0,0}}},
 {"en0",
  {{65152,0,0,0,44679,41983,65072,60656},
   {65535,65535,65535,65535,0,0,0,0}}},
 {"en1",{{192,168,1,22},{255,255,255,0}}},
 {"en1",
  {{10753,3637,35380,28048,24909,3247,60839,4143},
   {65535,65535,65535,65535,0,0,0,0}}}]

IP and MAC address format conversions

API	Description
convert_mac/2	Convert MAC Address from -> to
convert_ip/2	Convert IP Address from -> to

1> inet_utils:convert_mac(to_binstring, <<1,2,3,4,5,6>>).
<<"01:02:03:04:05:06">>
2> inet_utils:convert_ip(to_binary, 16#01020304).
<<1,2,3,4>>

Check address type

You can test an IP address to know if they it's a private, global(public), loopback, reserved, unspecified, liknlocal or multicast address by using the following functions:

* `is_private_address/1`
* `is_global_address/1`
* `is_loopback_address/1`
* `is_unspecified_address/1`
* `is_reserved_address/1`
* `is_linklocal_address/1`
* `is_multicast_address/1`

These functions are using based on IANA IPv4 & IPv6 special-purpose address registries.

1> inet_ext:is_private_address("192.168.1.1").
true

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zxq9 / inet_ext