Initial commit of files

src/libnet/ip_hostname.c

@@ -0,0 +1,45 @@
+//
+// IP gethostname
+//
+
+#include "netlib.h"
+
+const char *ip_host2name( char *buf, int max, const struct sockaddr_storage *sa )
+{
+  const char *s = NULL;
+  
+  switch (sa->ss_family)
+  {
+    case AF_INET:
+      s = inet_ntop(sa->ss_family,
+                    &((struct sockaddr_in *)sa)->sin_addr,
+                    buf, max);
+      break;
+    case AF_INET6:
+      s = inet_ntop(sa->ss_family,
+                    &((struct sockaddr_in6 *)sa)->sin6_addr,
+                    buf, max);
+      break;
+  }
+  if ( s )
+    return s;
+  
+  return strerror(errno);
+}
+
+int ip_name2host( const char *buf, struct sockaddr_storage *sa )
+{
+  // from string
+  switch (sa->ss_family)
+  {
+    case AF_INET:
+      return inet_pton(sa->ss_family, buf,
+                       &((struct sockaddr_in *)sa)->sin_addr );
+      break;
+    case AF_INET6:
+      return inet_pton(sa->ss_family, buf,
+                       &((struct sockaddr_in6 *)sa)->sin6_addr );
+      break;
+  }
+  return EAFNOSUPPORT;
+}