manually start merging core_net

core/net/interface.odin

@@ -0,0 +1,68 @@
+/*
+	Copyright 2022 Tetralux        <tetraluxonpc@gmail.com>
+	Copyright 2022 Colin Davidson  <colrdavidson@gmail.com>
+	Copyright 2022 Jeroen van Rijn <nom@duclavier.com>.
+	Made available under Odin's BSD-3 license.
+
+	List of contributors:
+		Tetralux:        Initial implementation
+		Colin Davidson:  Linux platform code, OSX platform code, Odin-native DNS resolver
+		Jeroen van Rijn: Cross platform unification, code style, documentation
+*/
+
+/*
+	Package net implements cross-platform Berkeley Sockets, DNS resolution and associated procedures.
+	For other protocols and their features, see subdirectories of this package.
+*/
+package net
+
+import "core:strings"
+
+/*
+	`destroy_interfaces` cleans up a list of network interfaces retrieved by e.g. `enumerate_interfaces`.
+*/
+destroy_interfaces :: proc(interfaces: []Network_Interface, allocator := context.allocator) {
+	context.allocator = allocator
+
+	for i in interfaces {
+		delete(i.adapter_name)
+		delete(i.friendly_name)
+		delete(i.description)
+		delete(i.dns_suffix)
+
+		delete(i.physical_address)
+
+		delete(i.unicast)
+		delete(i.multicast)
+		delete(i.anycast)
+		delete(i.gateways)
+	}
+	delete(interfaces, allocator)
+}
+
+/*
+	Turns a slice of bytes (from e.g. `get_adapters_addresses`) into a "XX:XX:XX:..." string.
+*/
+physical_address_to_string :: proc(phy_addr: []u8, allocator := context.allocator) -> (phy_string: string) {
+	context.allocator = allocator
+
+	MAC_HEX := "0123456789ABCDEF"
+
+	if len(phy_addr) == 0 {
+		return ""
+	}
+
+	buf: strings.Builder
+
+	for b, i in phy_addr {
+		if i > 0 {
+			strings.write_rune_builder(&buf, ':')
+		}
+
+		hi := rune(MAC_HEX[b >> 4])
+		lo := rune(MAC_HEX[b & 15])
+		strings.write_rune_builder(&buf, hi)
+		strings.write_rune_builder(&buf, lo)
+	}
+	return strings.to_string(buf)
+}