65 lines
1.3 KiB
V
65 lines
1.3 KiB
V
module netio
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import os
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#include <net/if.h>
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struct C.if_nameindex {
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if_index u32
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if_name &char
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}
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fn C.if_nametoindex(&char) u32
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fn C.if_indextoname(u32, &char) &char
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fn C.if_nameindex() &C.if_nameindex
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fn C.if_freenameindex(voidptr)
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// name_to_index translates the network interface name to index.
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pub fn name_to_index(name string) !u32 {
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index := C.if_nametoindex(&char(name.str))
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if index == 0 {
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return error('${@FN}: no index for `${name}`')
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}
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return index
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}
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// index_to_name translates the network interface index to name e.g. 'eth0'.
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pub fn index_to_name(index u32) !string {
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name := []u8{len: C.IF_NAMESIZE}
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ifname := C.if_indextoname(index, name.data)
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if isnil(ifname) {
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return os.last_error()
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}
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return unsafe { cstring_to_vstring(ifname) }
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}
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pub struct NetworkInterface {
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index u32
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name string
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}
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// interfaces returns an array with names and indexes of all network interfaces in system.
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pub fn interfaces() ![]NetworkInterface {
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ifaces := C.if_nameindex()
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if isnil(ifaces) {
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return os.last_error()
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}
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defer {
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C.if_freenameindex(ifaces)
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}
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mut result := []NetworkInterface{}
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mut i := 0
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for {
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iface := unsafe { ifaces[i] }
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i++
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if iface.if_index == 0 && isnil(iface.if_name) {
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break
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}
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result << NetworkInterface{
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index: iface.if_index
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name: unsafe { cstring_to_vstring(iface.if_name) }
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}
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}
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return result
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}
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