libpcap: Update to 1.10.3

Local changes:

- In contrib/libpcap/pcap/bpf.h, do not include pcap/dlt.h.  Our system
  net/dlt.h is pulled in from net/bpf.h.
- sys/net/dlt.h: Incorporate changes from libpcap 1.10.3.
- lib/libpcap/Makefile: Update for libpcap 1.10.3.

Changelog:	https://git.tcpdump.org/libpcap/blob/95691ebe7564afa3faa5c6ba0dbd17e351be455a:/CHANGES
Reviewed by:	emaste
Obtained from:	https://www.tcpdump.org/release/libpcap-1.10.3.tar.gz
Sponsored by:	The FreeBSD Foundation

1 files changed, 66 insertions, 0 deletions

diff --git a/contrib/libpcap/sslutils.h b/contrib/libpcap/sslutils.h
new file mode 100644
index 000000000000..6316364ecfc2
--- /dev/null
+++ b/contrib/libpcap/sslutils.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2002 - 2003
+ * NetGroup, Politecnico di Torino (Italy)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Politecnico di Torino nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __SSLUTILS_H__
+#define __SSLUTILS_H__
+
+#ifdef HAVE_OPENSSL
+#include "pcap/socket.h"  // for SOCKET
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+
+/*
+ * Utility functions
+ */
+
+void ssl_set_certfile(const char *certfile);
+void ssl_set_keyfile(const char *keyfile);
+int ssl_init_once(int is_server, int enable_compression, char *errbuf, size_t errbuflen);
+SSL *ssl_promotion(int is_server, SOCKET s, char *errbuf, size_t errbuflen);
+void ssl_finish(SSL *ssl);
+int ssl_send(SSL *, char const *buffer, int size, char *errbuf, size_t errbuflen);
+int ssl_recv(SSL *, char *buffer, int size, char *errbuf, size_t errbuflen);
+
+// The SSL parameters are used
+#define _U_NOSSL_
+
+#else   // HAVE_OPENSSL
+
+// This saves us from a lot of ifdefs:
+#define SSL void const
+
+// The SSL parameters are unused
+#define _U_NOSSL_	_U_
+
+#endif  // HAVE_OPENSSL
+
+#endif  // __SSLUTILS_H__