1 files changed, 79 insertions, 0 deletions
diff --git a/usr.sbin/sendmail/contrib/oldbind.compat.c b/usr.sbin/sendmail/contrib/oldbind.compat.c
new file mode 100644
index 0000000..1621a7b
--- /dev/null
+++ b/usr.sbin/sendmail/contrib/oldbind.compat.c
@@ -0,0 +1,79 @@
+/*
+**  OLDBIND.COMPAT.C
+**
+**	Very old systems do not have res_query(), res_querydomain() or
+**	res_search(), so emulate them here.
+**
+**	You really ought to be upgrading to a newer version of BIND
+**	(4.8.2 or later) rather than be using this.
+**
+**	J.R. Oldroyd <jr@inset.com>
+*/
+
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <resolv.h>
+
+typedef union
+{
+	HEADER	qb1;
+	char	qb2[PACKETSZ];
+} querybuf;
+
+res_query(dname, class, type, data, datalen)
+	char *		dname;
+	int		class;
+	int 		type;
+	char *		data;
+	int		datalen;
+{
+	int		n;
+	querybuf	buf;
+
+	n = res_mkquery(QUERY, dname, class, type, (char *) NULL, 0,
+		NULL, (char *) &buf, sizeof buf);
+	n = res_send((char *)&buf, n, data, datalen);
+
+	return n;
+}
+
+res_querydomain(host, dname, class, type, data, datalen)
+	char *		host;
+	char *		dname;
+	int		class;
+	int		type;
+	char *		data;
+	int		datalen;
+{
+	int		n;
+	querybuf	buf;
+	char		dbuf[256];
+
+	strcpy(dbuf, host);
+	if (dbuf[strlen(dbuf)-1] != '.')
+		strcat(dbuf, ".");
+	strcat(dbuf, dname);
+	n = res_mkquery(QUERY, dbuf, class, type, (char *) NULL, 0,
+		NULL, (char *)&buf, sizeof buf);
+	n = res_send((char *) &buf, n, data, datalen);
+
+	return n;
+}
+
+res_search(dname, class, type, data, datalen)
+	char *		dname;
+	int		class;
+	int		type;
+	char *		data;
+	int		datalen;
+{
+	int		n;
+	querybuf	buf;
+
+	n = res_mkquery(QUERY, dname, class, type, (char *)NULL, 0,
+		NULL, (char *) &buf, sizeof buf);
+	n = res_send((char *) &buf, n, data, datalen);
+
+	return n;
+}