Import (trimmed) ISC bind-8.1.2-t3b. This will be updated to 8.1.2 on

final release.

Obtained from:  ftp.isc.org

1 files changed, 123 insertions, 0 deletions

diff --git a/contrib/bind/bin/named/ns_udp.c b/contrib/bind/bin/named/ns_udp.c
new file mode 100644
index 0000000..8b1af5e
--- /dev/null
+++ b/contrib/bind/bin/named/ns_udp.c
@@ -0,0 +1,123 @@
+#if !defined(lint) && !defined(SABER)
+static char rcsid[] = "$Id: ns_udp.c,v 8.5 1997/05/21 19:52:26 halley Exp $";
+#endif /* not lint */
+
+/*
+ * Copyright (c) 1996, 1997 by Internet Software Consortium.
+ *
+ * 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM 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 "port_before.h"
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/file.h>
+
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <arpa/inet.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <netdb.h>
+#include <nlist.h>
+#include <resolv.h>
+#include <stdio.h>
+#include <syslog.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <isc/eventlib.h>
+#include <isc/logging.h>
+
+#include "port_after.h"
+
+#include "named.h"
+
+void
+ns_udp() {
+#if defined(CHECK_UDP_SUM) || defined(FIX_UDP_SUM)
+	struct nlist nl[2];
+	int fd;
+	int sum;
+	u_long res, offset;
+
+	nl[0].n_name = UDPSUM;
+	nl[1].n_name = 0;
+
+	if (nlist(KSYMS, nl)) {
+		ns_debug(ns_log_default, 1, "ns_udp: nlist (%s,%s) failed",
+			 KSYMS, UDPSUM);
+		return;
+	}
+
+	ns_debug(ns_log_default, 1, "ns_udp: %s %d %lu (%ld)",
+		 nl[0].n_name, nl[0].n_type, nl[0].n_value, nl[0].n_value);
+
+	if (!nl[0].n_type)
+		return;
+
+	if ((fd = open(KMEM, O_RDWR, 0)) < 0) {
+		ns_debug(ns_log_default, 1, "ns_udp: open %s failed: %s", KMEM,
+			 strerror(errno));
+		return;
+	}
+
+	offset = nl[0].n_value;
+#ifdef KMAP
+	offset &= ((~0UL)>>1);
+#endif
+
+	res = lseek(fd, offset, SEEK_SET);
+	if (res != offset) {
+		ns_debug(ns_log_default, 1, "ns_udp: lseek %lu failed %lu: %s",
+			 offset, res, strerror(errno));
+		goto cleanup;
+	}
+
+	if (read(fd, &sum, sizeof(sum)) != sizeof(sum)) {
+		ns_debug(ns_log_default, 1, "ns_udp: read failed: %s",
+			 strerror(errno));
+		goto cleanup;
+	}
+
+	ns_debug(ns_log_default, 1, "ns_udp: %d", sum);
+	if (sum == 0) {
+#ifdef FIX_UDP_SUM
+		sum = 1;
+		lseek(fd, offset, SEEK_SET);
+		if (res != offset) {
+			ns_debug(ns_log_default, 1,
+				 "ns_udp: lseek %lu failed %lu: %s",
+				 offset, res, strerror(errno));
+			goto cleanup;
+		}
+		if (write(fd, &sum, sizeof(sum)) != sizeof(sum)) {
+			ns_debug(ns_log_default, 1, "ns_udp: write failed: %s",
+				 strerror(errno));
+			goto cleanup;
+		}
+		ns_warning(ns_log_default, "ns_udp: check sums turned on");
+#else
+		ns_panic(ns_log_default, 0,
+			 "ns_udp: checksums NOT turned on, exiting");
+#endif
+	}
+cleanup:
+	close(fd);
+#endif
+}