1 files changed, 91 insertions, 0 deletions
diff --git a/lib/libc/asr/res_query.c b/lib/libc/asr/res_query.c
new file mode 100644
index 00000000000..b0c1cf159c8
--- /dev/null
+++ b/lib/libc/asr/res_query.c
@@ -0,0 +1,91 @@
+/*	$OpenBSD: res_query.c,v 1.1 2012/09/08 11:08:21 eric Exp $	*/
+/*
+ * Copyright (c) 2012 Eric Faurot <eric@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <netinet/in.h>
+
+#include <errno.h>
+#include <resolv.h>
+#include <string.h>
+
+#include "asr.h"
+
+int
+res_query(const char *name, int class, int type, u_char *ans, int anslen)
+{
+	struct async	*as;
+	struct async_res ar;
+
+	if (ans == NULL || anslen <= 0) {
+		h_errno = NO_RECOVERY;
+		errno = EINVAL;
+		return (-1);
+	}
+
+	as = res_query_async(name, class, type, ans, anslen, NULL);
+	if (as == NULL) {
+		if (errno == EINVAL)
+			h_errno = NO_RECOVERY;
+		else
+			h_errno = NETDB_INTERNAL;
+		return (-1); /* errno set */
+	}
+
+	async_run_sync(as, &ar);
+
+	if (ar.ar_errno)
+		errno = ar.ar_errno;
+	h_errno = ar.ar_h_errno;
+
+	if (ar.ar_h_errno != NETDB_SUCCESS)
+		return (-1);
+
+	return (ar.ar_datalen);
+}
+
+int
+res_search(const char *name, int class, int type, u_char *ans, int anslen)
+{
+	struct async	*as;
+	struct async_res ar;
+
+	if (ans == NULL || anslen <= 0) {
+		h_errno = NO_RECOVERY;
+		errno = EINVAL;
+		return (-1);
+	}
+
+	as = res_search_async(name, class, type, ans, anslen, NULL);
+	if (as == NULL) {
+		if (errno == EINVAL)
+			h_errno = NO_RECOVERY;
+		else
+			h_errno = NETDB_INTERNAL;
+		return (-1); /* errno set */
+	}
+
+	async_run_sync(as, &ar);
+
+	if (ar.ar_errno)
+		errno = ar.ar_errno;
+	h_errno = ar.ar_h_errno;
+
+	if (ar.ar_h_errno != NETDB_SUCCESS)
+		return (-1);
+
+	return (ar.ar_datalen);
+}