1 files changed, 16 insertions, 5 deletions
diff --git a/src/network/gethostbyaddr.c b/src/network/gethostbyaddr.c
index 51e1c569..c9b6388a 100644
--- a/src/network/gethostbyaddr.c
+++ b/src/network/gethostbyaddr.c
@@ -3,13 +3,24 @@
 #include <netdb.h>
 #include <string.h>
 #include <netinet/in.h>
+#include <errno.h>
+#include <stdlib.h>
 
 struct hostent *gethostbyaddr(const void *a, socklen_t l, int af)
 {
-	static struct hostent h;
-	static long buf[512/sizeof(long)];
+	static struct hostent *h;
+	size_t size = 63;
 	struct hostent *res;
-	if (gethostbyaddr_r(a, l, af, &h,
-		(void *)buf, sizeof buf, &res, &h_errno)) return 0;
-	return &h;
+	int err;
+	do {
+		free(h);
+		h = malloc(size+=size+1);
+		if (!h) {
+			h_errno = NO_RECOVERY;
+			return 0;
+		}
+		err = gethostbyaddr_r(a, l, af, h,
+			(void *)(h+1), size-sizeof *h, &res, &h_errno);
+	} while (err == ERANGE);
+	return err ? 0 : h;
 }