/*
* This file is part of DisOrder.
- * Copyright (C) 2004 Richard Kettlewell
+ * Copyright (C) 2004, 2007 Richard Kettlewell
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
-/** @file lib/addr.c Socket address support */
+/** @file lib/addr.c
+ * @brief Socket address support */
#include <config.h>
#include "types.h"
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
+#include <arpa/inet.h>
+#include <sys/un.h>
#include "log.h"
#include "printf.h"
#include "configuration.h"
#include "addr.h"
+#include "mem.h"
/** @brief Convert a pair of strings to an address
* @param a Pointer to string list
return memcmp(a->ai_addr, b->ai_addr, a->ai_addrlen); /* kludge */
}
}
-
+
+static inline int multicast4(const struct sockaddr_in *sin) {
+ return IN_MULTICAST(ntohl(sin->sin_addr.s_addr));
+}
+
+static inline int multicast6(const struct sockaddr_in6 *sin6) {
+ return IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr);
+}
+
+/** @brief Return true if @p sa represents a multicast address */
+int multicast(const struct sockaddr *sa) {
+ switch(sa->sa_family) {
+ case AF_INET:
+ return multicast4((const struct sockaddr_in *)sa);
+ case AF_INET6:
+ return multicast6((const struct sockaddr_in6 *)sa);
+ default:
+ return 0;
+ }
+}
+
+static inline char *format_sockaddr4(const struct sockaddr_in *sin) {
+ char buffer[1024], *r;
+
+ if(sin->sin_port)
+ byte_xasprintf(&r, "%s port %u",
+ inet_ntop(sin->sin_family, &sin->sin_addr,
+ buffer, sizeof buffer),
+ ntohs(sin->sin_port));
+ else
+ byte_xasprintf(&r, "%s",
+ inet_ntop(sin->sin_family, &sin->sin_addr,
+ buffer, sizeof buffer));
+ return r;
+}
+
+static inline char *format_sockaddr6(const struct sockaddr_in6 *sin6) {
+ char buffer[1024], *r;
+
+ if(sin6->sin6_port)
+ byte_xasprintf(&r, "%s port %u",
+ inet_ntop(sin6->sin6_family, &sin6->sin6_addr,
+ buffer, sizeof buffer),
+ ntohs(sin6->sin6_port));
+ else
+ byte_xasprintf(&r, "%s",
+ inet_ntop(sin6->sin6_family, &sin6->sin6_addr,
+ buffer, sizeof buffer));
+ return r;
+}
+
+static inline char *format_sockaddrun(const struct sockaddr_un *sun) {
+ return xstrdup(sun->sun_path);
+}
+
+/** @brief Construct a text description a sockaddr */
+char *format_sockaddr(const struct sockaddr *sa) {
+ switch(sa->sa_family) {
+ case AF_INET:
+ return format_sockaddr4((const struct sockaddr_in *)sa);
+ case AF_INET6:
+ return format_sockaddr6((const struct sockaddr_in6 *)sa);
+ case AF_UNIX:
+ return format_sockaddrun((const struct sockaddr_un *)sa);
+ default:
+ return 0;
+ }
+}
+
/*
Local Variables:
c-basic-offset:2