net: implement OpenBSD and NetBSD support & add stubs for other targets & cleanup

1 files changed, 20 insertions, 2 deletions

diff --git a/core/net/dns_windows.odin b/core/net/dns_windows.odin
index b1e7da97d..393df5fa7 100644
--- a/core/net/dns_windows.odin
+++ b/core/net/dns_windows.odin
@@ -20,11 +20,29 @@ package net
 		Feoramund:       FreeBSD platform code
 */
 
-import "core:strings"
+import "base:runtime"
+
 import "core:mem"
+import "core:os"
+import "core:strings"
+import "core:sync"
 
 import win "core:sys/windows"
 
+/*
+	Replaces environment placeholders in `dns_configuration`. Only necessary on Windows.
+	Is automatically called, once, by `get_dns_records_*`.
+*/
+@(private)
+_init_dns_configuration :: proc() {
+	sync.once_do(&dns_config_initialized, proc() {
+		runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD()
+		val := os.replace_environment_placeholders(dns_configuration.hosts_file, context.temp_allocator)
+		copy(dns_configuration.hosts_file_buf[:], val)
+		dns_configuration.hosts_file = string(dns_configuration.hosts_file_buf[:len(val)])
+	})
+}
+
 @(private)
 _get_dns_records_os :: proc(hostname: string, type: DNS_Record_Type, allocator := context.allocator) -> (records: []DNS_Record, err: DNS_Error) {
 	context.allocator = allocator
@@ -171,4 +189,4 @@ _get_dns_records_os :: proc(hostname: string, type: DNS_Record_Type, allocator :
 
 	records = recs[:]
 	return
-}
\ No newline at end of file
+}