first draft

resolve.c

@@ -0,0 +1,63 @@
+/* 
+ * $smu-mark$ 
+ * $name: resolve.c$ 
+ * $author: Salvatore Sanfilippo <antirez@invece.org>$ 
+ * $copyright: Copyright (C) 1999 by Salvatore Sanfilippo$ 
+ * $license: This software is under GPL version 2 of license$ 
+ * $date: Fri Nov  5 11:55:49 MET 1999$ 
+ * $rev: 8$ 
+ */ 
+
+#include <stdlib.h>
+#include <sys/types.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+void resolve (struct sockaddr * addr, char *hostname)
+{
+	struct  sockaddr_in *address;
+	struct  hostent     *host;
+
+	address = (struct sockaddr_in *)addr;
+
+	memset(address, 0, sizeof(struct sockaddr_in));
+	address->sin_family = AF_INET;
+	address->sin_addr.s_addr = inet_addr(hostname);
+
+	if ( (int)address->sin_addr.s_addr == -1) {
+		host = gethostbyname(hostname);
+		if (host) {
+			memcpy(&address->sin_addr, host->h_addr,
+				host->h_length);
+		} else {
+			perror("[resolve] Could not resolve address");
+			exit(1);
+		}
+	}
+}
+
+void resolve6 (struct sockaddr * addr, char *hostname)
+{
+	struct  sockaddr_in6 *address;
+	struct  hostent      *host;
+
+	address = (struct sockaddr_in6 *)addr;
+
+	memset(address, 0, sizeof(struct sockaddr_in6));
+	address->sin6_family = AF_INET6;
+	if(inet_pton(AF_INET6, hostname, &address->sin6_addr) < 1) {
+		host = gethostbyname2(hostname, AF_INET6);
+		if (host) {
+			memcpy(&address->sin6_addr, host->h_addr,
+				host->h_length);
+		} else {
+			herror("[resolve] Could not resolve address");
+			exit(1);
+		}
+	}
+}