From 53967ebd9facfd59a2e0a7b949bf538638dd5da6 Mon Sep 17 00:00:00 2001
From: Alexandr Dubovikov <alexandr.dubovikov@gmail.com>
Date: Mon, 29 May 2017 16:57:47 +0200
Subject: [PATCH] added first EPAN prototype

---
 configure.ac                              | 22 ++++++
 src/modules/protocol/epan/Makefile.am     | 16 +++++
 src/modules/protocol/epan/protocol_epan.c | 83 +++++++++++++++++++++++
 3 files changed, 121 insertions(+)
 create mode 100644 src/modules/protocol/epan/Makefile.am
 create mode 100644 src/modules/protocol/epan/protocol_epan.c

diff --git a/configure.ac b/configure.ac
index b9fa2a46..c2ddb96a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -59,6 +59,16 @@ AC_ARG_ENABLE(mysql,
 AC_MSG_RESULT([$MYSQL])
 AC_SUBST([MYSQL])
 
+useEpan=no
+AC_ARG_ENABLE(compression,
+   [  --enable-epan	Enable EPAN support / Wireshark dissectors)],
+   [EPAN="$enableval"]
+   useEpan=yes,
+   [EPAN="no"]
+)
+AC_MSG_RESULT([$EPAN])
+AC_SUBST([EPAN])
+
 
 usePCRE=no
 AC_MSG_CHECKING([whether to use pcre])
@@ -216,6 +226,17 @@ if test "$ZLIB" = "yes"; then
    AC_DEFINE(USE_ZLIB, 1, [Use ZIP library])
 fi
 
+dnl
+dnl check for epan library
+dnl
+   
+if test "$EPAN" = "yes"; then
+   AC_CHECKING([for epan Library and Header files])
+   AC_CHECK_HEADER(epan.h,,[AC_MSG_ERROR([epan.h headers not found.])])
+   AC_CHECK_LIB(wireshark, epan_get_version, [ ], [AC_MSG_ERROR([$PACKAGE_NAME requires but cannot find wireshark libraries])])
+   AC_DEFINE(USE_EPAN, 1, [Use EPAN library])
+fi
+
 
 dnl
 dnl check for redis library
@@ -352,5 +373,6 @@ echo Build with REDIS............ : $useRedis
 echo Build with MySQL............ : $useMysql
 echo Build with PCRE............. : $usePCRE
 echo Build with LibUV............ : $useLIBUV
+echo Build with EPAN............. : $useEPAN
 echo
 
diff --git a/src/modules/protocol/epan/Makefile.am b/src/modules/protocol/epan/Makefile.am
new file mode 100644
index 00000000..ab63aedc
--- /dev/null
+++ b/src/modules/protocol/epan/Makefile.am
@@ -0,0 +1,16 @@
+include $(top_srcdir)/modules.am
+
+SUBDIRS = \
+	.
+
+noinst_HEADERS =
+#
+protocol_epan_la_SOURCES = protocol_epan.c
+protocol_epan_la_CFLAGS = -Wall ${MODULE_CFLAGS}
+protocol_epan_la_LDFLAGS = -module -avoid-version
+protocol_epan_la_LIBADD = ${PTHREAD_LIBS} ${EXPAT_LIBS} ${PCAP_LIBS}
+protocol_epan_laconfdir = $(confdir)
+protocol_epan_laconf_DATA = $(top_srcdir)/conf/protocol_epan.xml
+
+mod_LTLIBRARIES = protocol_epan.la
+
diff --git a/src/modules/protocol/epan/protocol_epan.c b/src/modules/protocol/epan/protocol_epan.c
new file mode 100644
index 00000000..b1b7d2fc
--- /dev/null
+++ b/src/modules/protocol/epan/protocol_epan.c
@@ -0,0 +1,83 @@
+/*
+ * $Id$
+ *
+ *  captagent - Homer capture agent. Modular
+ *  Duplicate SIP messages in Homer Encapulate Protocol [HEP] [ipv6 version]
+ *
+ *  Author: Alexandr Dubovikov
+ *  (C) Homer Project 2016 (http://www.sipcapture.org)
+ *
+ * Homer capture agent 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 3 of the License, or
+ * (at your option) any later version
+ *
+ * Homer capture agent 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+*/
+
+#include <captagent/api.h>
+#include <captagent/structure.h>
+#include <captagent/modules_api.h>
+#include <captagent/modules.h>
+#include <captagent/log.h>
+
+#include <sys/types.h>
+#include <limits.h>
+
+
+static uint64_t module_serial = 0;
+
+static cmd_export_t epan_cmds[] = {
+	{
+		.name		= "parse_epan",
+		.function	= epan_parse,
+		.param_no	= 0,
+		.flags		= 0,
+		.fixup_flags	= 0,
+	},
+	{ 0, },
+};
+
+struct module_exports exports = {
+	.name		= "protocol_epan",
+        .cmds		= epan_cmds,
+        .load_f		= epan_load_module,
+        .unload_f	= epan_unload_module,
+        .description_f	= epan_description,
+        .stats_f	= epan_statistic,
+        .serial_f	= epan_serial_module,
+};
+
+
+static int epan_load_module(xml_node *config)
+{
+	return 0;
+}
+
+static int epan_unload_module(void)
+{
+	return 0;
+}
+
+static int epan_description(char *description)
+{
+	return 1;
+}
+
+static int epan_statistic(char *buf, size_t len)
+{
+	return 1;
+}
+
+static uint64_t epan_serial_module(void)
+{
+	return module_serial;
+}