From 249866e3d1e11dc72eaa1305f4bb479ded92ef38 Mon Sep 17 00:00:00 2001
From: Jannis Hoffmann <jannis@fehcom.de>
Date: Tue, 9 Jul 2024 13:58:20 +0200
Subject: reorganized file structure

Moved c files into src/.
Corrected VERSION file.
Removed BUILD and FILES.
---
 src/socket_if.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 src/socket_if.c

(limited to 'src/socket_if.c')

diff --git a/src/socket_if.c b/src/socket_if.c
new file mode 100644
index 0000000..f55af4e
--- /dev/null
+++ b/src/socket_if.c
@@ -0,0 +1,36 @@
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <net/if.h>
+#include "socket_if.h"
+
+/**
+	@file socket_if.c
+	@author fefe, feh
+	@source ucspi-tcp6
+	@brief interface handling for LLU
+*/
+
+const unsigned char V4loopback[4] = {127,0,0,1};
+const unsigned char V4localnet[4] = {0,0,0,0};
+/* the 'V4mappedprefix' constant is needed by 'ip.a' too */
+const unsigned char V4mappedprefix[12] = {0,0,0,0, 0,0,0,0, 0,0,0xff,0xff};
+const unsigned char V6localnet[16] = {0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0};
+const unsigned char V6loopback[16] = {0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,1};
+
+uint32 socket_getifidx(const char *ifname) 
+{
+  return if_nametoindex(ifname);
+}
+
+static char ifname[IFNAMSIZ];
+
+const char* socket_getifname(uint32 scope_id) 
+{
+  char *tmp = if_indextoname(scope_id,ifname);
+  if (tmp)
+    return tmp;
+  else
+    return "[unknown]";
+}
-- 
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