Adding upstream version 4.2.2.upstream/4.2.2

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

1 files changed, 268 insertions, 0 deletions

diff --git a/epan/dissectors/packet-rmcp.c b/epan/dissectors/packet-rmcp.c
new file mode 100644
index 00000000..6d2abcbb
--- /dev/null
+++ b/epan/dissectors/packet-rmcp.c
@@ -0,0 +1,268 @@
+/* packet-rmcp.c
+ * Routines for RMCP packet dissection
+ *
+ * Duncan Laurie <duncan@sun.com>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * Copied from packet-tftp.c
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+
+void proto_register_rmcp(void);
+void proto_register_rsp(void);
+void proto_reg_handoff_rmcp(void);
+void proto_reg_handoff_rsp(void);
+
+static dissector_handle_t rmcp_handle;
+static dissector_handle_t rsp_handle;
+
+/*
+ * See
+ *	http://www.dmtf.org/standards/standard_alert.php
+ *      http://www.dmtf.org/standards/documents/ASF/DSP0136.pdf
+ * (the ASF specification includes RMCP)
+ */
+
+static int proto_rmcp = -1;
+static int hf_rmcp_version = -1;
+static int hf_rmcp_reserved = -1;
+static int hf_rmcp_sequence = -1;
+static int hf_rmcp_class = -1;
+static int hf_rmcp_type = -1;
+static int hf_rmcp_trailer = -1;
+
+static int proto_rsp = -1;
+static int hf_rsp_session_id = -1;
+static int hf_rsp_sequence = -1;
+
+static gint ett_rmcp = -1;
+static gint ett_rmcp_typeclass = -1;
+
+static gint ett_rsp = -1;
+
+static dissector_table_t rmcp_dissector_table;
+
+#define UDP_PORT_RMCP		623
+#define UDP_PORT_RMCP_SECURE	664
+
+#define RMCP_TYPE_MASK		0x80
+#define RMCP_TYPE_NORM		0x00
+#define RMCP_TYPE_ACK		0x01
+
+static const value_string rmcp_type_vals[] = {
+	{ RMCP_TYPE_NORM,	"Normal RMCP" },
+	{ RMCP_TYPE_ACK,	"RMCP ACK" },
+	{ 0,			NULL }
+};
+
+#define RMCP_CLASS_MASK		0x1f
+#define RMCP_CLASS_ASF		0x06
+#define RMCP_CLASS_IPMI		0x07
+#define RMCP_CLASS_OEM		0x08
+
+static const value_string rmcp_class_vals[] = {
+	{ RMCP_CLASS_ASF,	"ASF" },
+	{ RMCP_CLASS_IPMI,	"IPMI" },
+	{ RMCP_CLASS_OEM,	"OEM" },
+	{ 0,			NULL }
+};
+
+static int
+dissect_rmcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+	proto_tree	*rmcp_tree = NULL, *field_tree;
+	proto_item	*ti;
+	tvbuff_t	*next_tvb;
+	guint8		rmcp_class;
+	const gchar	*class_str;
+	guint8		type;
+	guint		len;
+
+	/*
+	 * Check whether it's a known class value; if not, assume it's
+	 * not RMCP.
+	 */
+	if (!tvb_bytes_exist(tvb, 3, 1))
+		return 0;	/* class value byte not present */
+	rmcp_class = tvb_get_guint8(tvb, 3);
+
+	/* Get the normal/ack bit from the RMCP class */
+	type = (rmcp_class & RMCP_TYPE_MASK) >> 7;
+	rmcp_class &= RMCP_CLASS_MASK;
+
+	class_str = try_val_to_str(rmcp_class, rmcp_class_vals);
+	if (class_str == NULL)
+		return 0;	/* unknown class value */
+
+	col_set_str(pinfo->cinfo, COL_PROTOCOL, "RMCP");
+	col_add_fstr(pinfo->cinfo, COL_INFO, "%s, Class: %s",
+		     val_to_str(type, rmcp_type_vals, "Unknown (0x%02x)"),
+		     class_str);
+
+	if (tree) {
+		ti = proto_tree_add_protocol_format(tree, proto_rmcp, tvb, 0, 4,
+			 "Remote Management Control Protocol, Class: %s",
+			 class_str);
+		rmcp_tree = proto_item_add_subtree(ti, ett_rmcp);
+
+		proto_tree_add_item(rmcp_tree, hf_rmcp_version, tvb, 0, 1, ENC_LITTLE_ENDIAN);
+		proto_tree_add_item(rmcp_tree, hf_rmcp_reserved, tvb, 1, 1, ENC_LITTLE_ENDIAN);
+		proto_tree_add_item(rmcp_tree, hf_rmcp_sequence, tvb, 2, 1, ENC_LITTLE_ENDIAN);
+
+		field_tree = proto_tree_add_subtree_format(rmcp_tree, tvb, 3, 1,
+			 ett_rmcp_typeclass, NULL, "Type: %s, Class: %s",
+			 val_to_str(type, rmcp_type_vals, "Unknown (0x%02x)"),
+			 class_str);
+
+		proto_tree_add_item(field_tree, hf_rmcp_class, tvb, 3, 1, ENC_LITTLE_ENDIAN);
+		proto_tree_add_item(field_tree, hf_rmcp_type, tvb, 3, 1, ENC_LITTLE_ENDIAN);
+	}
+
+	if (!type){ /* do not expect a data block for an ACK */
+
+		next_tvb = tvb_new_subset_remaining(tvb, 4);
+
+		if (!dissector_try_uint(rmcp_dissector_table, rmcp_class, next_tvb, pinfo,
+			tree)) {
+			len = call_data_dissector(next_tvb, pinfo, tree);
+			if (len < tvb_reported_length(next_tvb)) {
+				proto_tree_add_item(tree, hf_rmcp_trailer, tvb, 4 + len, -1, ENC_NA);
+			}
+		}
+	}
+
+	return tvb_captured_length(tvb);
+}
+
+static int
+dissect_rsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+	proto_tree	*rsp_tree = NULL/*, *field_tree*/;
+	proto_item	*ti/*, *tf*/;
+	tvbuff_t	*next_tvb;
+	int 		offset = 0;
+
+	if (tree) {
+		ti = proto_tree_add_protocol_format(tree, proto_rsp, tvb, offset, 8,
+			 "RMCP Security-extension Protocol");
+		rsp_tree = proto_item_add_subtree(ti, ett_rsp);
+
+		proto_tree_add_item(rsp_tree, hf_rsp_session_id, tvb, offset, 4, ENC_BIG_ENDIAN);
+		offset += 4;
+		proto_tree_add_item(rsp_tree, hf_rsp_sequence, tvb, offset, 4, ENC_BIG_ENDIAN);
+		/*offset += 4;*/
+	}
+
+	/* XXX determination of RCMP message length needs to
+	 * be done according to 3.2.3.3.3 of the specification.
+	 * This is only valid for session ID equals 0
+	 */
+	next_tvb = tvb_new_subset_remaining(tvb, 8);
+	dissect_rmcp(next_tvb, pinfo, tree, NULL);
+
+	return tvb_captured_length(tvb);
+}
+
+void
+proto_register_rmcp(void)
+{
+	static hf_register_info hf[] = {
+		{ &hf_rmcp_version, {
+			"Version", "rmcp.version",
+			FT_UINT8, BASE_HEX, NULL, 0,
+			"RMCP Version", HFILL }},
+		{ &hf_rmcp_reserved, {
+			"Reserved", "rmcp.reserved",
+			FT_UINT8, BASE_HEX, NULL, 0,
+			"RMCP Reserved", HFILL }},
+		{ &hf_rmcp_sequence, {
+			"Sequence", "rmcp.sequence",
+			FT_UINT8, BASE_HEX, NULL, 0,
+			"RMCP Sequence", HFILL }},
+		{ &hf_rmcp_class, {
+			"Class", "rmcp.class",
+			FT_UINT8, BASE_HEX,
+			VALS(rmcp_class_vals), RMCP_CLASS_MASK,
+			"RMCP Class", HFILL }},
+		{ &hf_rmcp_type, {
+			"Message Type", "rmcp.type",
+			FT_UINT8, BASE_HEX,
+			VALS(rmcp_type_vals), RMCP_TYPE_MASK,
+			"RMCP Message Type", HFILL }},
+		{ &hf_rmcp_trailer, {
+			"RSP Trailer", "rmcp.trailer",
+			FT_BYTES, BASE_NONE, NULL, 0,
+			NULL, HFILL }},
+	};
+	static gint *ett[] = {
+		&ett_rmcp,
+		&ett_rmcp_typeclass
+	};
+
+	proto_rmcp = proto_register_protocol("Remote Management Control Protocol", "RMCP", "rmcp");
+
+	proto_register_field_array(proto_rmcp, hf, array_length(hf));
+	proto_register_subtree_array(ett, array_length(ett));
+
+	rmcp_handle = register_dissector("rmcp", dissect_rmcp, proto_rmcp);
+
+	rmcp_dissector_table = register_dissector_table(
+		"rmcp.class", "RMCP Class", proto_rmcp, FT_UINT8, BASE_HEX);
+}
+
+void
+proto_register_rsp(void)
+{
+	static hf_register_info hf[] = {
+		{ &hf_rsp_session_id, {
+			"Session ID", "rsp.session_id",
+			FT_UINT32, BASE_HEX, NULL, 0,
+			"RSP session ID", HFILL }},
+		{ &hf_rsp_sequence, {
+			"Sequence", "rsp.sequence",
+			FT_UINT32, BASE_HEX, NULL, 0,
+			"RSP sequence", HFILL }},
+	};
+	static gint *ett[] = {
+		&ett_rsp
+	};
+
+	proto_rsp = proto_register_protocol("RMCP Security-extensions Protocol", "RSP", "rsp");
+	proto_register_field_array(proto_rsp, hf, array_length(hf));
+	proto_register_subtree_array(ett, array_length(ett));
+
+	rsp_handle = register_dissector("rsp", dissect_rsp, proto_rsp);
+}
+
+void
+proto_reg_handoff_rmcp(void)
+{
+	dissector_add_uint_with_preference("udp.port", UDP_PORT_RMCP, rmcp_handle);
+}
+
+void
+proto_reg_handoff_rsp(void)
+{
+	dissector_add_uint_with_preference("udp.port", UDP_PORT_RMCP_SECURE, rsp_handle);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 8
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * End:
+ *
+ * vi: set shiftwidth=8 tabstop=8 noexpandtab:
+ * :indentSize=8:tabSize=8:noTabs=false:
+ */