1 files changed, 36 insertions, 0 deletions
diff --git a/src/libstddjb/socket_local46.c b/src/libstddjb/socket_local46.c
new file mode 100644
index 0000000..a53bcac
--- /dev/null
+++ b/src/libstddjb/socket_local46.c
@@ -0,0 +1,36 @@
+/* ISC license. */
+
+#include <skalibs/nonposix.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <skalibs/uint16.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/ip46.h>
+
+#ifdef SKALIBS_IPV6_ENABLED
+
+int socket_local46 (int s, ip46_t_ref ip, uint16 *port)
+{
+  struct sockaddr sa ;
+  socklen_t dummy = sizeof sa ;
+  if (getsockname(s, &sa, &dummy) < 0) return -1 ;
+  if (sa.sa_family == AF_INET6)
+  {
+    register struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)&sa ;
+    byte_copy(ip->ip, 16, sa6->sin6_addr.s6_addr) ;
+    uint16_unpack_big((char *)&sa6->sin6_port, port) ;
+    ip->is6 = 1 ;
+  }
+  else if (sa.sa_family == AF_INET)
+  {
+    register struct sockaddr_in *sa4 = (struct sockaddr_in *)&sa ;
+    byte_copy(ip->ip, 4, &sa4->sin_addr.s_addr) ;
+    uint16_unpack_big((char *)&sa4->sin_port, port) ;
+    ip->is6 = 0 ;
+  }
+  else return (errno = EAFNOSUPPORT, -1) ;
+  return 0 ;
+}
+
+#endif