1 files changed, 20 insertions, 0 deletions
diff --git a/src/libstddjb/socket_local4.c b/src/libstddjb/socket_local4.c
new file mode 100644
index 0000000..90ae93a
--- /dev/null
+++ b/src/libstddjb/socket_local4.c
@@ -0,0 +1,20 @@
+/* ISC license. */
+
+#include <skalibs/nonposix.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <skalibs/uint16.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/socket.h>
+
+int socket_local4 (int s, char *ip, uint16 *port)
+{
+  struct sockaddr_in sa ;
+  socklen_t dummy = sizeof sa ;
+
+  if (getsockname(s, (struct sockaddr *)&sa, &dummy) == -1)
+    return -1 ;
+  byte_copy(ip, 4, (char *)&sa.sin_addr.s_addr) ;
+  uint16_unpack_big((char *)&sa.sin_port, port) ;
+  return 0 ;
+}