From 9fb2ddb0bedad21e0080d7e18d6917b8555c0f1b Mon Sep 17 00:00:00 2001
From: Pekka Riikonen <priikone@silcnet.org>
Date: Fri, 14 Mar 2008 16:23:16 +0200
Subject: [PATCH] Added silc_net_bit2addr, silc_htonl, silc_ntohl, silc_htons,
 silc_ntohs

---
 lib/silcutil/silcnet.c | 80 ++++++++++++++++++++++++++++++++++++++++++
 lib/silcutil/silcnet.h | 68 +++++++++++++++++++++++++++++++++++
 2 files changed, 148 insertions(+)

diff --git a/lib/silcutil/silcnet.c b/lib/silcutil/silcnet.c
index 5c6dadb0..47ca9fce 100644
--- a/lib/silcutil/silcnet.c
+++ b/lib/silcutil/silcnet.c
@@ -630,3 +630,83 @@ char *silc_net_localip(void)
 
   return silc_strdup(ip_addr);
 }
+
+/* Convert network byte order IP to string */
+
+SilcBool silc_net_bin2addr(const void *bin, SilcUInt32 bin_len,
+			   char *addr, SilcUInt32 addr_size)
+{
+  if (!addr || !addr_size)
+    return TRUE;
+
+  if (bin_len == 16) {
+#ifdef HAVE_IPV6
+    struct sockaddr_in6 ipv6;
+    memset(&ipv6, 0, sizeof(ipv6));
+    ipv6.sin6_family = AF_INET6;
+    memcpy(&ipv6.sin6_addr, bin, sizeof(ipv6.sin6_addr));
+    if (!getnameinfo((struct sockaddr *)&ipv6, sizeof(ipv6),
+		     addr, addr_size, NULL, 0, NI_NUMERICHOST))
+    return TRUE;
+#else
+    return FALSE;
+#endif /* HAVE_IPV6 */
+  } else if (bin_len == 4) {
+    struct in_addr ipv4;
+    char *a;
+
+    memcpy(&ipv4.s_addr, bin, 4);
+    a = inet_ntoa(ipv4);
+    if (!a)
+      return FALSE;
+
+    silc_snprintf(addr, addr_size, a);
+    return TRUE;
+  }
+
+  return FALSE;
+}
+
+/* Host to network byte order */
+
+SilcUInt32 silc_htonl(SilcUInt32 host)
+{
+#ifdef WORDS_BIGENDIAN
+  return host;
+#else
+  return SILC_SWAB_32(host);
+#endif /* WORDS_BIGENDIAN */
+}
+
+/* Network to host byte order */
+
+SilcUInt32 silc_ntohl(SilcUInt32 net)
+{
+#ifdef WORDS_BIGENDIAN
+  return net;
+#else
+  return SILC_SWAB_32(net);
+#endif /* WORDS_BIGENDIAN */
+}
+
+/* Host to network byte order */
+
+SilcUInt16 silc_htons(SilcUInt16 host)
+{
+#ifdef WORDS_BIGENDIAN
+  return net;
+#else
+  return SILC_SWAB_16(host);
+#endif /* WORDS_BIGENDIAN */
+}
+
+/* Network to host byte order */
+
+SilcUInt16 silc_ntohs(SilcUInt16 net)
+{
+#ifdef WORDS_BIGENDIAN
+  return net;
+#else
+  return SILC_SWAB_16(net);
+#endif /* WORDS_BIGENDIAN */
+}
diff --git a/lib/silcutil/silcnet.h b/lib/silcutil/silcnet.h
index 7172338d..e7edcda4 100644
--- a/lib/silcutil/silcnet.h
+++ b/lib/silcutil/silcnet.h
@@ -501,6 +501,22 @@ SilcBool silc_net_is_ip(const char *addr);
  ***/
 SilcBool silc_net_addr2bin(const char *addr, void *bin, SilcUInt32 bin_len);
 
+/****f* silcutil/silc_net_bin2addr
+ *
+ * SYNOPSIS
+ *
+ *    SilcBool silc_net_bin2addr(const void *bin, SilcUInt32 bin_len,
+ *                               char *addr, SilcUInt32 addr_size);
+ *
+ * DESCRIPTION
+ *
+ *    Converts network byte ordered IP address into a numbers-and-dots
+ *    string notation.  The `bin' address can be either IPv4 or IPv6 address.
+ *
+ ***/
+SilcBool silc_net_bin2addr(const void *bin, SilcUInt32 bin_len,
+			   char *addr, SilcUInt32 addr_size);
+
 /****f* silcutil/SilcNetResolveCallback
  *
  * SYNOPSIS
@@ -695,6 +711,58 @@ char *silc_net_localhost(void);
  ***/
 char *silc_net_localip(void);
 
+/****f* silcutil/silc_htonl
+ *
+ * SYNOPSIS
+ *
+ *    SilcUInt32 silc_htonl(SilcUInt32 host);
+ *
+ * DESCRIPTION
+ *
+ *    Converts integer `host' from host byte order to network byte order.
+ *
+ ***/
+SilcUInt32 silc_htonl(SilcUInt32 host);
+
+/****f* silcutil/silc_ntohl
+ *
+ * SYNOPSIS
+ *
+ *    SilcUInt32 silc_ntohl(SilcUInt32 net);
+ *
+ * DESCRIPTION
+ *
+ *    Converts integer `net' from network byte order to host byte order.
+ *
+ ***/
+SilcUInt32 silc_ntohl(SilcUInt32 net);
+
+/****f* silcutil/silc_htonl
+ *
+ * SYNOPSIS
+ *
+ *    SilcUInt16 silc_htons(SilcUInt16 host);
+ *
+ * DESCRIPTION
+ *
+ *    Converts integer `host' from host byte order to network byte order.
+ *
+ ***/
+SilcUInt16 silc_htons(SilcUInt16 host);
+
+/****f* silcutil/silc_ntohl
+ *
+ * SYNOPSIS
+ *
+ *    SilcUInt16 silc_ntohs(SilcUInt16 net);
+ *
+ * DESCRIPTION
+ *
+ *    Converts integer `net' from network byte order to host byte order.
+ *
+ ***/
+SilcUInt16 silc_ntohs(SilcUInt16 net);
+
 #include "silcnet_i.h"
 
 #endif /* SILCNET_H */
-- 
2.24.0