Adding upstream version 4.2.2.upstream/4.2.2

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

1 files changed, 373 insertions, 0 deletions

diff --git a/epan/dissectors/packet-uts.c b/epan/dissectors/packet-uts.c
new file mode 100644
index 00000000..ecf7a4ef
--- /dev/null
+++ b/epan/dissectors/packet-uts.c
@@ -0,0 +1,373 @@
+/* packet-uts.c
+ * Routines for UTS WAN protocol dissection
+ * Copyright 2007, Fulko Hew, SITA INC Canada, Inc.
+ *
+ * Copied from packet-ipars.c
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+/* Use tabstops = 4 */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <wiretap/wtap.h>
+#include <wsutil/str_util.h>
+
+#define	SOH	(0x01)
+#define	STX	(0x02)
+#define	ETX	(0x03)
+#define	EOT	(0x04)
+#define	ENQ	(0x05)
+#define	BEL	(0x07)
+#define	NAK	(0x15)
+#define	DLE	(0x10)
+
+#define GRID	(0x20)
+#define GSID	(0x50)
+#define GDID	(0x70)
+
+#define MAX_POLL_TYPE_MSG_SIZE	(50)
+
+void proto_register_uts(void);
+
+static int	proto_uts	= -1;
+static gint	ett_uts		= -1;
+static gint	ett_header_uts	= -1;
+static gint	ett_trailer_uts	= -1;
+static int	hf_rid		= -1;
+static int	hf_sid		= -1;
+static int	hf_did		= -1;
+static int	hf_retxrequest	= -1;
+static int	hf_ack		= -1;
+static int	hf_replyrequest	= -1;
+static int	hf_busy		= -1;
+static int	hf_notbusy	= -1;
+static int	hf_msgwaiting	= -1;
+static int	hf_function	= -1;
+static int	hf_data		= -1;
+
+#define MATCH	(1)
+#define FETCH	(2)
+
+#define SRC	(1)
+#define DST	(2)
+
+static int testchar(tvbuff_t *tvb, packet_info *pinfo _U_, int offset, int op, gchar match, gchar *storage)
+{
+	gchar temp;
+
+	if (tvb_bytes_exist(tvb, offset, 1)) {
+		temp = tvb_get_guint8(tvb, offset) & 0x7f;
+		if (op == FETCH || (op == MATCH && temp == match)) {
+			if (storage != NULL)
+				*storage = temp;
+			return 1;
+		} else {
+			return 0;
+		}
+	} else {
+		col_set_str(pinfo->cinfo, COL_INFO, "Unknown Message Format");
+		return 0;
+	}
+}
+
+static void
+set_addr(packet_info *pinfo _U_ , int field, gchar rid, gchar sid, gchar did)
+{
+	if (field == SRC) {
+		col_append_fstr(pinfo->cinfo, COL_DEF_SRC, " %2.2X:%2.2X:%2.2X", rid, sid, did);
+	} else {
+		col_append_fstr(pinfo->cinfo, COL_DEF_DST, " %2.2X:%2.2X:%2.2X", rid, sid, did);
+	}
+}
+
+static int
+dissect_uts(tvbuff_t *tvb, packet_info *pinfo _U_ , proto_tree *tree, void* data _U_)
+{
+	proto_tree	*uts_tree		= NULL;
+	proto_tree	*uts_header_tree	= NULL;
+	proto_tree	*uts_trailer_tree	= NULL;
+	proto_item	*ti;
+	int		length;
+	gchar		rid = 0, sid = 0, did = 0;
+	int		offset			= 0;
+	int		header_length		= -1;
+	int		ack_start		= 0;
+	int		busy_start		= 0;
+	int		notbusy_start		= 0;
+	int		replyrequest_start	= 0;
+	int		function_start		= 0;
+	int		msgwaiting_start	= 0;
+	int		nak_start		= 0;
+	int		etx_start		= 0;
+	int		bcc_start		= 0;
+	int		stx_start		= 0;
+	gchar		function_code;
+	guint8		*data_ptr;
+
+	enum	{ NOTRAFFIC, OTHER }	msg_type = OTHER;
+
+	col_set_str(pinfo->cinfo, COL_PROTOCOL, "UTS");
+
+	if (testchar(tvb, pinfo, 0, MATCH, EOT, NULL)	  &&
+		testchar(tvb, pinfo, 1, MATCH, EOT, NULL) &&
+		testchar(tvb, pinfo, 2, MATCH, ETX, NULL)) {
+		msg_type = NOTRAFFIC;
+		col_set_str(pinfo->cinfo, COL_INFO, "No Traffic");
+	} else {
+		if (testchar(tvb, pinfo, 0, MATCH, SOH, NULL)		&&
+		    testchar(tvb, pinfo, 1, FETCH, 0, (gchar *)&rid)	&&
+		    testchar(tvb, pinfo, 2, FETCH, 0, (gchar *)&sid)	&&
+		    testchar(tvb, pinfo, 3, FETCH, 0, (gchar *)&did)) {
+			offset = 4;
+			if (testchar(tvb, pinfo, offset, MATCH, ETX, NULL)) {
+				col_set_str(pinfo->cinfo, COL_INFO, "General Poll");
+				set_addr(pinfo, DST, rid, sid, did);
+			} else if (testchar(tvb, pinfo, offset, MATCH, DLE, NULL)	&&
+				   testchar(tvb, pinfo, offset+1, MATCH, '1', NULL)	&&
+				   testchar(tvb, pinfo, offset+2, MATCH, ETX, NULL)) {
+				ack_start = offset;
+				if (sid == GSID && did == GDID) {
+					col_set_str(pinfo->cinfo, COL_INFO, "General Poll + ACK");
+					set_addr(pinfo, DST, rid, sid, did);
+				} else if (sid != GSID && did == GDID) {
+					col_set_str(pinfo->cinfo, COL_INFO, "Specific Poll + ACK");
+					set_addr(pinfo, DST, rid, sid, did);
+				} else if (sid != GSID && did != GDID) {
+					col_set_str(pinfo->cinfo, COL_INFO, "No Traffic + ACK");
+					set_addr(pinfo, SRC, rid, sid, did);
+				} else {
+					col_set_str(pinfo->cinfo, COL_INFO, "Unknown Message Format");
+					if ((pinfo->pseudo_header->sita.sita_flags & SITA_FRAME_DIR) == SITA_FRAME_DIR_TXED) {
+						set_addr(pinfo, DST, rid, sid, did);	/* if the ACN sent it, the address is of the destination... the terminal */
+					} else {
+						set_addr(pinfo, SRC, rid, sid, did);	/* if the ACN received it, the address if of the source... the terminal */
+					}
+				}
+			} else if (testchar(tvb, pinfo, offset, MATCH, DLE, NULL)	&&
+				   testchar(tvb, pinfo, offset+1, MATCH, NAK, NULL)	&&
+				   testchar(tvb, pinfo, offset+2, MATCH, ETX, NULL)	&&
+				   sid != GSID && did == GDID) {
+				nak_start = offset;
+				col_set_str(pinfo->cinfo, COL_INFO, "Retransmit Request");
+				set_addr(pinfo, DST, rid, sid, did);
+			} else if (testchar(tvb, pinfo, offset, MATCH, BEL, NULL)	&&
+				   testchar(tvb, pinfo, offset+1, MATCH, STX, NULL)	&&
+				   testchar(tvb, pinfo, offset+2, MATCH, ETX, NULL)) {
+				header_length = offset+2;
+				msgwaiting_start = offset;
+				col_set_str(pinfo->cinfo, COL_INFO, "Message Waiting");
+				set_addr(pinfo, DST, rid, sid, did);
+			} else if (testchar(tvb, pinfo, offset, MATCH, DLE, NULL)	&&
+				   testchar(tvb, pinfo, offset+1, MATCH, '1', NULL)	&&
+				   testchar(tvb, pinfo, offset+2, MATCH, STX, NULL)) {
+				ack_start = offset;
+				header_length = offset+3;
+				stx_start = offset+2;
+				col_set_str(pinfo->cinfo, COL_INFO, "Text + ACK");
+				set_addr(pinfo, SRC, rid, sid, did);
+			} else if (testchar(tvb, pinfo, offset, MATCH, STX, NULL)) {
+				header_length = offset+1;
+				stx_start = offset;
+				col_set_str(pinfo->cinfo, COL_INFO, "Text");
+				if ((pinfo->pseudo_header->sita.sita_flags & SITA_FRAME_DIR) == SITA_FRAME_DIR_TXED) {
+					set_addr(pinfo, DST, rid, sid, did);		/* if the ACN sent it, the address is of the destination... the terminal */
+				} else {
+					set_addr(pinfo, SRC, rid, sid, did);		/* if the ACN received it, the address if of the source... the terminal */
+				}
+			} else if (testchar(tvb, pinfo, offset, MATCH, DLE, NULL)	&&
+				   testchar(tvb, pinfo, offset+1, MATCH, ENQ, NULL)	&&
+				   testchar(tvb, pinfo, offset+2, MATCH, ETX, NULL)) {
+				replyrequest_start = offset;
+				col_set_str(pinfo->cinfo, COL_INFO, "Reply Request");
+				set_addr(pinfo, SRC, rid, sid, did);
+			} else if (testchar(tvb, pinfo, offset, MATCH, DLE, NULL)	&&
+				   testchar(tvb, pinfo, offset+1, MATCH, '?', NULL)	&&
+				   testchar(tvb, pinfo, offset+2, MATCH, ETX, NULL)) {
+				busy_start = offset;
+				col_set_str(pinfo->cinfo, COL_INFO, "Busy");
+				set_addr(pinfo, SRC, rid, sid, did);
+			} else if (testchar(tvb, pinfo, offset, MATCH, DLE, NULL)	&&
+				   testchar(tvb, pinfo, offset+1, MATCH, ';', NULL)	&&
+				   testchar(tvb, pinfo, offset+2, MATCH, ETX, NULL)) {
+				notbusy_start = offset;
+				col_set_str(pinfo->cinfo, COL_INFO, "Not Busy");
+				set_addr(pinfo, SRC, rid, sid, did);
+			} else if (testchar(tvb, pinfo, offset, MATCH, DLE, NULL)	&&
+				   testchar(tvb, pinfo, offset+1, MATCH, '1', NULL)	&&
+				   testchar(tvb, pinfo, offset+2, MATCH, DLE, NULL)	&&
+				   testchar(tvb, pinfo, offset+3, MATCH, ';', NULL)	&&
+				   testchar(tvb, pinfo, offset+4, MATCH, ETX, NULL)) {
+				notbusy_start = offset+2;
+				ack_start = offset;
+				col_set_str(pinfo->cinfo, COL_INFO, "Not Busy + ACK");
+				set_addr(pinfo, SRC, rid, sid, did);
+			} else if (testchar(tvb, pinfo, offset, MATCH, DLE, NULL)		&&
+				   testchar(tvb, pinfo, offset+1, MATCH, '1', NULL)		&&
+				   testchar(tvb, pinfo, offset+2, FETCH, 0, &function_code)	&&
+				   testchar(tvb, pinfo, offset+3, MATCH, ETX, NULL)) {
+				ack_start = offset;
+				function_start = offset + 2;
+				col_add_fstr(pinfo->cinfo, COL_INFO, "Function Message '%c' + ACK", function_code);
+				set_addr(pinfo, SRC, rid, sid, did);
+			} else if (testchar(tvb, pinfo, offset, FETCH, 0, &function_code)	&&
+				   testchar(tvb, pinfo, offset+1, MATCH, ETX, NULL)) {
+				function_start = offset;
+				col_add_fstr(pinfo->cinfo, COL_INFO, "Function Message '%c'", function_code);
+				set_addr(pinfo, SRC, rid, sid, did);
+			}
+		}
+	}
+
+	while (tvb_reported_length_remaining(tvb, offset) > 0) {					/* now look for the ETX */
+		if ((tvb_get_guint8(tvb, offset) & 0x7f) == ETX) {
+			if (header_length == -1)
+				header_length = offset;	/* the header ends at an STX, or if not found, the ETX */
+			etx_start = offset;
+			offset++;
+			break;
+		}
+		offset++;
+	}
+	if (tvb_reported_length_remaining(tvb, offset))						/* if there is anything left, it could be the BCC and pads */
+		bcc_start = offset;
+
+	if (tree) {
+		ti = proto_tree_add_protocol_format(tree, proto_uts, tvb, 0, -1, "UTS");
+		uts_tree = proto_item_add_subtree(ti, ett_uts);
+
+		if (msg_type == NOTRAFFIC) {
+			proto_tree_add_protocol_format(uts_tree, proto_uts, tvb, 0, 2, "No Traffic");
+			proto_tree_add_protocol_format(uts_tree, proto_uts, tvb, 2, -1, "ETX + padding");
+		} else {
+			uts_header_tree = proto_tree_add_subtree(uts_tree, tvb, 0, header_length, ett_header_uts, NULL, "Header");
+
+			proto_tree_add_protocol_format(uts_header_tree, proto_uts, tvb, 0, 1, "SOH");
+
+			if (rid == GRID)
+				proto_tree_add_uint_format(uts_header_tree, hf_rid, tvb, 1, 1, rid, "RID (%02X) (General)", rid);
+			else
+				proto_tree_add_uint_format(uts_header_tree, hf_rid, tvb, 1, 1, rid, "RID (%02X)", rid);
+
+			if (sid == GSID)
+				proto_tree_add_uint_format(uts_header_tree, hf_sid, tvb, 2, 1, sid, "SID (%02X) (General)", sid);
+			else
+				proto_tree_add_uint_format(uts_header_tree, hf_sid, tvb, 2, 1, sid, "SID (%02X)", sid);
+
+			if (did == GDID)
+				proto_tree_add_uint_format(uts_header_tree, hf_did, tvb, 3, 1, did, "DID (%02X) (General)", did);
+			else
+				proto_tree_add_uint_format(uts_header_tree, hf_did, tvb, 3, 1, did, "DID (%02X)", did);
+
+			if (nak_start)
+				proto_tree_add_boolean_format(uts_header_tree, hf_retxrequest,	tvb, nak_start,	2, 1, "Re-transmit Request");
+			if (ack_start)
+				proto_tree_add_boolean_format(uts_header_tree, hf_ack, tvb, ack_start, 2, 1, "Ack");
+
+			if (replyrequest_start)
+				proto_tree_add_boolean_format(uts_header_tree, hf_replyrequest,	tvb, replyrequest_start, 2, 1, "Reply Request");
+			if (busy_start)
+				proto_tree_add_boolean_format(uts_header_tree, hf_busy,	tvb, busy_start, 2, 1, "Busy");
+
+			if (notbusy_start)
+				proto_tree_add_boolean_format(uts_header_tree, hf_notbusy, tvb, notbusy_start, 2, 1, "Not Busy");
+
+			if (msgwaiting_start)
+				proto_tree_add_boolean_format(uts_header_tree, hf_msgwaiting, tvb, msgwaiting_start, 1, 1, "Message Waiting");
+
+			if (function_start)
+				proto_tree_add_uint_format(uts_header_tree, hf_function, tvb, function_start, 1, function_code, "Function '%c'", function_code	);
+
+			if (stx_start) {
+				proto_tree_add_protocol_format(uts_header_tree, proto_uts, tvb, stx_start, 1, "Start of Text");
+				length = tvb_captured_length_remaining(tvb, stx_start+1);    /* find out how much message remains      */
+				if (etx_start)
+					length = (etx_start - stx_start - 1);       /* and the data part is the rest...       */
+										    /* whatever preceeds the ETX if it exists */
+				data_ptr = tvb_get_string_enc(pinfo->pool, tvb, stx_start+1, length, ENC_ASCII);	/* copy the string for dissecting */
+				proto_tree_add_string_format(uts_tree, hf_data, tvb, stx_start + 1, length, data_ptr,
+							     "Text (%d byte%s)", length, plurality(length, "", "s"));
+			}
+
+			if (etx_start) {
+				uts_trailer_tree = proto_tree_add_subtree(uts_tree, tvb, etx_start, -1, ett_trailer_uts, NULL, "Trailer");
+
+				if (etx_start)
+					proto_tree_add_protocol_format(uts_trailer_tree, proto_uts, tvb, etx_start, 1, "ETX");
+				if (bcc_start)
+					proto_tree_add_protocol_format(uts_trailer_tree, proto_uts, tvb, bcc_start, -1, "CCC + padding");
+			}
+		}
+	}
+	return tvb_captured_length(tvb);
+}
+
+void
+proto_register_uts(void)
+{
+	static hf_register_info hf[] = {
+		{ &hf_rid,
+		  { "RID",	   "uts.rid",
+		    FT_UINT8,	BASE_HEX,	NULL, 0, "Remote Identifier address",	HFILL }},
+		{ &hf_sid,
+		  { "SID",	   "uts.sid",
+		    FT_UINT8,	BASE_HEX,	NULL, 0, "Site Identifier address",	HFILL }},
+		{ &hf_did,
+		  { "DID",	   "uts.did",
+		    FT_UINT8,	BASE_HEX,	NULL, 0, "Device Identifier address",	HFILL }},
+		{ &hf_retxrequest,
+		  { "ReTxRequest",  "uts.retxrequest",
+		    FT_BOOLEAN,	BASE_NONE,	NULL, 0x0, "TRUE if Re-transmit Request", HFILL }},
+		{ &hf_ack,
+		  { "Ack",	   "uts.ack",
+		    FT_BOOLEAN,	BASE_NONE,	NULL, 0x0, "TRUE if Ack",		HFILL }},
+		{ &hf_replyrequest,
+		  { "ReplyRequest", "uts.replyrequest",
+		    FT_BOOLEAN,	BASE_NONE,	NULL, 0x0, "TRUE if Reply Request",	HFILL }},
+		{ &hf_busy,
+		  { "Busy",	   "uts.busy",
+		    FT_BOOLEAN,	BASE_NONE,	NULL, 0x0, "TRUE if Busy",		HFILL }},
+		{ &hf_notbusy,
+		  { "NotBusy",	   "uts.notbusy",
+		    FT_BOOLEAN,	BASE_NONE,	NULL, 0x0, "TRUE if Not Busy",		HFILL }},
+		{ &hf_msgwaiting,
+		  { "MsgWaiting",  "uts.msgwaiting",
+		    FT_BOOLEAN,	BASE_NONE,	NULL, 0x0, "TRUE if Message Waiting",	HFILL }},
+		{ &hf_function,
+		  { "Function",    "uts.function",
+		    FT_UINT8,	BASE_HEX,	NULL, 0, "Function Code value",		HFILL }},
+		{ &hf_data,
+		  { "Data",	   "uts.data",
+		    FT_STRING,	BASE_NONE,	NULL, 0, "User Data Message",		HFILL }},
+	};
+
+	static gint *ett[] = {
+		&ett_uts,
+		&ett_header_uts,
+		&ett_trailer_uts,
+	};
+
+	proto_uts = proto_register_protocol("Unisys Transmittal System", "UTS", "uts");		/* name, short name, abbrev */
+	proto_register_field_array(proto_uts, hf, array_length(hf));
+	proto_register_subtree_array(ett, array_length(ett));
+	register_dissector("uts", dissect_uts, proto_uts);
+}
+
+/*
+ * 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:
+ */