Initial commit of files

src/libnet/ip_hostaddr.c

@@ -0,0 +1,57 @@
+//
+// IP gethostname
+//
+
+#include "netlib.h"
+
+int ip_host2addr( const char *host, const char *service, struct sockaddr_storage *sa, socklen_t *len )
+{
+  struct hostent *ent;
+  
+  /* do host lookup matching family (this is not POSIX) */
+  if ( (ent = gethostbyname2( host, AF_INET6 )) == NULL )
+  {
+    if ( (ent = gethostbyname2( host, AF_INET )) == NULL )
+    {
+      log_error( "gethostbyname" );
+      return -1;
+    }
+  }
+  int family = ent->h_addrtype;
+  
+  // service
+  int port = ip_service2port( service, atoi(service), NULL );
+  
+  /* clear and initialize address structure */
+  if ( sa )
+    bzero(sa, sizeof(struct sockaddr_storage) );
+  
+  if ( family == AF_INET6 )
+  {
+    if ( sa )
+    {
+      struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
+      sa6->sin6_family = family;
+      sa6->sin6_port = port;
+      sa6->sin6_addr = *((struct in6_addr *)ent->h_addr);
+    }
+    if ( len )
+      *len = sizeof(struct sockaddr_in6);
+  }
+  else if ( family == AF_INET )
+  {
+    if ( sa )
+    {
+      struct sockaddr_in  *sa4 = (struct sockaddr_in *)sa;
+      sa4->sin_family = family;
+      sa4->sin_port = port;
+      sa4->sin_addr = *((struct in_addr *)ent->h_addr);
+    }
+    if ( len )
+      *len = sizeof(struct sockaddr_in);
+  }
+  else
+    return -1;
+  
+  return family;
+}