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#+build darwin
package net
/*
Package net implements cross-platform Berkeley Sockets, DNS resolution and associated procedures.
For other protocols and their features, see subdirectories of this package.
*/
/*
Copyright 2022 Tetralux <tetraluxonpc@gmail.com>
Copyright 2022 Colin Davidson <colrdavidson@gmail.com>
Copyright 2022 Jeroen van Rijn <nom@duclavier.com>.
Copyright 2024 Feoramund <rune@swevencraft.org>.
Made available under Odin's 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
Feoramund: FreeBSD platform code
*/
import "core:strings"
import "core:sys/posix"
foreign import lib "system:System"
@(private)
_enumerate_interfaces :: proc(allocator := context.allocator) -> (interfaces: []Network_Interface, err: Interfaces_Error) {
context.allocator = allocator
head: ^ifaddrs
if getifaddrs(&head) != .OK {
return {}, .Unable_To_Enumerate_Network_Interfaces
}
defer freeifaddrs(head)
ifaces: map[string]Network_Interface
defer delete(ifaces)
for ifaddr := head; ifaddr != nil; ifaddr = ifaddr.next {
adapter_name := string(ifaddr.name)
key_ptr, iface, inserted, mem_err := map_entry(&ifaces, adapter_name)
if mem_err == nil && inserted {
key_ptr^, mem_err = strings.clone(adapter_name)
iface.adapter_name = key_ptr^
}
if mem_err != nil {
return {}, .Allocation_Failure
}
address: Address
netmask: Netmask
if ifaddr.addr != nil {
#partial switch ifaddr.addr.sa_family {
case .INET, .INET6:
address = _sockaddr_basic_to_endpoint(ifaddr.addr).address
}
}
if ifaddr.netmask != nil {
#partial switch ifaddr.netmask.sa_family {
case .INET, .INET6:
netmask = Netmask(_sockaddr_basic_to_endpoint(ifaddr.netmask).address)
}
}
if ifaddr.dstaddr != nil && .BROADCAST in ifaddr.flags {
#partial switch ifaddr.dstaddr.sa_family {
case .INET, .INET6:
broadcast := _sockaddr_basic_to_endpoint(ifaddr.dstaddr).address
append(&iface.multicast, broadcast)
}
}
if address != nil {
lease := Lease{
address = address,
netmask = netmask,
}
append(&iface.unicast, lease)
}
/*
TODO: Refine this based on the type of adapter.
*/
state := Link_State{}
if .UP in ifaddr.flags {
state += {.Up}
}
/*if .DORMANT in ifaddr.flags {
state |= {.Dormant}
}*/
if .LOOPBACK in ifaddr.flags {
state += {.Loopback}
}
iface.link.state = state
}
interfaces = make([]Network_Interface, len(ifaces))
i: int
for _, iface in ifaces {
interfaces[i] = iface
i += 1
}
return interfaces, nil
}
@(private)
IF_Flag :: enum u32 {
UP,
BROADCAST,
DEBUG,
LOOPBACK,
POINTTOPOINT,
NOTRAILERS,
RUNNING,
NOARP,
PROMISC,
ALLMULTI,
OACTIVE,
SIMPLEX,
LINK0,
LINK1,
LINK2,
MULTICAST,
}
@(private)
IF_Flags :: bit_set[IF_Flag; u32]
@(private)
ifaddrs :: struct {
next: ^ifaddrs,
name: cstring,
flags: IF_Flags,
addr: ^posix.sockaddr,
netmask: ^posix.sockaddr,
dstaddr: ^posix.sockaddr,
data: rawptr,
}
@(private)
foreign lib {
getifaddrs :: proc(ifap: ^^ifaddrs) -> posix.result ---
freeifaddrs :: proc(ifp: ^ifaddrs) ---
}
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