1 files changed, 26 insertions, 0 deletions
diff --git a/src/network/res_query.c b/src/network/res_query.c
new file mode 100644
index 0000000..506dc23
--- /dev/null
+++ b/src/network/res_query.c
@@ -0,0 +1,26 @@
+#define _BSD_SOURCE
+#include <resolv.h>
+#include <netdb.h>
+
+int res_query(const char *name, int class, int type, unsigned char *dest, int len)
+{
+	unsigned char q[280];
+	int ql = __res_mkquery(0, name, class, type, 0, 0, 0, q, sizeof q);
+	if (ql < 0) return ql;
+	int r = __res_send(q, ql, dest, len);
+	if (r<12) {
+		h_errno = TRY_AGAIN;
+		return -1;
+	}
+	if ((dest[3] & 15) == 3) {
+		h_errno = HOST_NOT_FOUND;
+		return -1;
+	}
+	if ((dest[3] & 15) == 0 && !dest[6] && !dest[7]) {
+		h_errno = NO_DATA;
+		return -1;
+	}
+	return r;
+}
+
+weak_alias(res_query, res_search);