X-Git-Url: https://git.distorted.org.uk/~mdw/tripe/blobdiff_plain/cb2c2bfcff87c4d6959fe3ccf47a4b509f933e9c..d98625f4404ba4fca4f395bc72f15d68043d75b4:/server/servutil.c

diff --git a/server/servutil.c b/server/servutil.c
index 70721396..b6fbf5b8 100644
--- a/server/servutil.c
+++ b/server/servutil.c
@@ -121,6 +121,30 @@ int mystrieq(const char *x, const char *y)
   }
 }
 
+/*----- Address handling --------------------------------------------------*/
+
+const struct addrfam aftab[] = {
+#define DEF(af) { AF_##af, #af },
+  ADDRFAM(DEF)
+#undef DEF
+};
+
+/* --- @afix@ --- *
+ *
+ * Arguments:	@int af@ = an address family code
+ *
+ * Returns:	The index of the address family's record in @aftab@, or @-1@.
+ */
+
+int afix(int af)
+{
+  int i;
+
+  for (i = 0; i < NADDRFAM; i++)
+    if (af == aftab[i].af) return (i);
+  return (-1);
+}
+
 /* --- @addrsz@ --- *
  *
  * Arguments:	@const addr *a@ = a network address
@@ -136,4 +160,30 @@ socklen_t addrsz(const addr *a)
   }
 }
 
+/* --- @getport@, @setport@ --- *
+ *
+ * Arguments:	@addr *a@ = a network address
+ *		@unsigned port@ = port number to set
+ *
+ * Returns:	---
+ *
+ * Use:		Retrieves or sets the port number in an address structure.
+ */
+
+unsigned getport(addr *a)
+{
+  switch (a->sa.sa_family) {
+    case AF_INET: return (ntohs(a->sin.sin_port)); break;
+    default: abort();
+  }
+}
+
+void setport(addr *a, unsigned port)
+{
+  switch (a->sa.sa_family) {
+    case AF_INET: a->sin.sin_port = htons(port); break;
+    default: abort();
+  }
+}
+
 /*----- That's all, folks -------------------------------------------------*/