1 files changed, 101 insertions, 0 deletions
diff --git a/src/include/pcap.h b/src/include/pcap.h
new file mode 100644
index 0000000..1d57d93
--- /dev/null
+++ b/src/include/pcap.h
@@ -0,0 +1,101 @@
+#ifndef FR_PCAP_H
+#define FR_PCAP_H
+#ifdef HAVE_LIBPCAP
+/*
+ *   This program is is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License, version 2 of the
+ *   License as published by the Free Software Foundation.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+/**
+ * $Id$
+ * @file include/pcap.h
+ * @brief Prototypes and constants for PCAP functions.
+ *
+ * @author Arran Cudbard-Bell <a.cudbardb@freeradius.org>
+ * @copyright 2013 Arran Cudbard-Bell <a.cudbardb@freeradius.org>
+ */
+#include <freeradius-devel/libradius.h>
+#include <freeradius-devel/net.h>
+
+#include <sys/types.h>
+#include <pcap.h>
+
+#define SNAPLEN ETHER_HDR_LEN + IP_HDR_LEN + sizeof(struct udp_header) + MAX_RADIUS_LEN
+#define PCAP_BUFFER_DEFAULT (10000)
+/*
+ *	It's unclear why this differs between platforms
+ */
+#ifndef __linux__
+#  define PCAP_NONBLOCK_TIMEOUT (0)
+#else
+#  define PCAP_NONBLOCK_TIMEOUT (-1)
+#endif
+
+#ifndef BIOCIMMEDIATE
+#  define BIOCIMMEDIATE (2147762800)
+#endif
+
+/*
+ *	Older versions of libpcap don't define this
+ */
+#ifndef PCAP_NETMASK_UNKNOWN
+#  define PCAP_NETMASK_UNKNOWN 0
+#endif
+
+typedef enum {
+	PCAP_INVALID = 0,
+	PCAP_INTERFACE_IN,
+	PCAP_FILE_IN,
+	PCAP_STDIO_IN,
+	PCAP_INTERFACE_OUT,
+	PCAP_FILE_OUT,
+	PCAP_STDIO_OUT
+} fr_pcap_type_t;
+
+extern const FR_NAME_NUMBER pcap_types[];
+
+/*
+ *	Internal pcap structures
+ */
+typedef struct fr_pcap fr_pcap_t;
+struct fr_pcap {
+	char			errbuf[PCAP_ERRBUF_SIZE];	//!< Last error on this interface.
+	fr_pcap_type_t		type;				//!< What type of handle this is.
+	char			*name;				//!< Name of file or interface.
+	bool			promiscuous;			//!< Whether the interface is in promiscuous mode.
+								//!< Only valid for live capture handles.
+	int			buffer_pkts;			//!< How big to make the PCAP ring buffer.
+								//!< Actual buffer size is SNAPLEN * buffer.
+								//!< Only valid for live capture handles.
+
+	pcap_t			*handle;			//!< libpcap handle.
+	pcap_dumper_t		*dumper;			//!< libpcap dumper handle.
+
+	int			link_layer;			//!< Link layer type.
+
+	int			fd;				//!< Selectable file descriptor we feed to select.
+	struct pcap_stat	pstats;				//!< The last set of pcap stats for this handle.
+
+	fr_pcap_t		*next;				//!< Next handle in collection.
+};
+
+int		fr_pcap_if_link_layer(char *errbuff, pcap_if_t *dev);
+fr_pcap_t	*fr_pcap_init(TALLOC_CTX *ctx, char const *name, fr_pcap_type_t type);
+int		fr_pcap_open(fr_pcap_t *handle);
+int		fr_pcap_apply_filter(fr_pcap_t *handle, char const *expression);
+char		*fr_pcap_device_names(TALLOC_CTX *ctx, fr_pcap_t *handle, char c);
+
+bool		fr_pcap_link_layer_supported(int link_layer);
+ssize_t		fr_pcap_link_layer_offset(uint8_t const *data, size_t len, int link_layer);
+#endif
+#endif