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diff --git a/caputils/capture-pcap-util.h b/caputils/capture-pcap-util.h
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+/* capture-pcap-util.h
+ * Utility definitions for packet capture
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef __CAPTURE_PCAP_UTIL_H__
+#define __CAPTURE_PCAP_UTIL_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#ifdef HAVE_LIBPCAP
+
+#include <pcap.h>
+
+/*
+ * A snapshot length of 0 is useless - and libpcap/WinPcap don't guarantee
+ * that a snapshot length of 0 will work, and, on some platforms, it won't
+ * (with BPF, for example, the kernel is told the snapshot length via the
+ * return value of the BPF program, and a return value of 0 means "drop
+ * the packet"), so the minimum packet size is 1 byte.
+ */
+#define MIN_PACKET_SIZE 1	/* minimum amount of packet data we can read */
+
+GList *get_interface_list(int *err, char **err_str);
+#ifdef HAVE_PCAP_REMOTE
+GList *get_remote_interface_list(const char *hostname, const char *port,
+                                 int auth_type, const char *username,
+                                 const char *passwd, int *err, char **err_str);
+#endif
+
+const char *linktype_val_to_name(int dlt);
+int linktype_name_to_val(const char *linktype);
+
+#endif /* HAVE_LIBPCAP */
+
+/*
+ * Get the versions of capture libraries with which we were compiled,
+ * and append them to a GString.
+ */
+extern void get_compiled_caplibs_version(GString *str);
+
+/*
+ * Append to a GString an indication of the version of capture libraries
+ * with which we're running, or an indication that we're not running
+ * with capture libraries, if we were compiled with WinPcap but
+ * WinPcap wasn't loaded, or nothing, if we weren't compiled with
+ * libpcap/WinPcap.
+ */
+extern void get_runtime_caplibs_version(GString *str);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __CAPTURE_PCAP_UTIL_H__ */