Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 99 insertions, 0 deletions

diff --git a/epan/dissectors/packet-echo.c b/epan/dissectors/packet-echo.c
new file mode 100644
index 00000000..de0e2361
--- /dev/null
+++ b/epan/dissectors/packet-echo.c
@@ -0,0 +1,99 @@
+/* packet-echo.c
+ * Routines for ECHO packet disassembly (RFC862)
+ *
+ * Only useful to mark the packets as ECHO in the summary and in the
+ * protocol hierarchy statistics (since not so many fields to decode ;-)
+ *
+ * Laurent Deniel <laurent.deniel@free.fr>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+
+#define ECHO_PORT  7
+
+void proto_register_echo(void);
+void proto_reg_handoff_echo(void);
+
+static dissector_handle_t echo_handle;
+static int proto_echo = -1;
+
+static int hf_echo_data = -1;
+static int hf_echo_request = -1;
+static int hf_echo_response = -1;
+
+static gint ett_echo = -1;
+
+static int dissect_echo(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+  gboolean    request;
+  proto_tree *echo_tree;
+  proto_item *ti, *hidden_item;
+
+  request = (pinfo->destport == pinfo->match_uint);
+
+  col_set_str(pinfo->cinfo, COL_PROTOCOL, "ECHO");
+  col_set_str(pinfo->cinfo, COL_INFO, request ? "Request" : "Response");
+
+  ti = proto_tree_add_item(tree, proto_echo, tvb, 0, -1, ENC_NA);
+  echo_tree = proto_item_add_subtree(ti, ett_echo);
+
+  hidden_item = proto_tree_add_boolean(echo_tree,
+      request ?  hf_echo_request : hf_echo_response, tvb, 0, 0, 1);
+  proto_item_set_hidden(hidden_item);
+
+  proto_tree_add_item(echo_tree, hf_echo_data, tvb, 0, -1, ENC_NA);
+
+  return tvb_captured_length(tvb);
+}
+
+void proto_register_echo(void)
+{
+
+  static hf_register_info hf[] = {
+    { &hf_echo_data,
+      { "Echo data", "echo.data", FT_BYTES, BASE_NONE,
+        NULL, 0x0, NULL, HFILL }},
+    { &hf_echo_request,
+      { "Echo request", "echo.request", FT_BOOLEAN, BASE_NONE,
+        NULL, 0x0, NULL, HFILL }},
+    { &hf_echo_response,
+      { "Echo response","echo.response", FT_BOOLEAN, BASE_NONE,
+        NULL, 0x0, NULL, HFILL }}
+  };
+
+  static gint *ett[] = {
+    &ett_echo
+  };
+
+  proto_echo = proto_register_protocol("Echo", "ECHO", "echo");
+  proto_register_field_array(proto_echo, hf, array_length(hf));
+  proto_register_subtree_array(ett, array_length(ett));
+  echo_handle = register_dissector("echo", dissect_echo, proto_echo);
+}
+
+void proto_reg_handoff_echo(void)
+{
+  dissector_add_uint_with_preference("udp.port", ECHO_PORT, echo_handle);
+  dissector_add_uint_with_preference("tcp.port", ECHO_PORT, echo_handle);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local Variables:
+ * c-basic-offset: 2
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * ex: set shiftwidth=2 tabstop=8 expandtab:
+ * :indentSize=2:tabSize=8:noTabs=true:
+ */