forked from osmocom/wireshark
![Nicolas BERTIN](/assets/img/avatar_default.png)
Change-Id: Id0dc39107f43680f082d5e6a1d8a1d4940640a13 Reviewed-on: https://code.wireshark.org/review/27792 Petri-Dish: Anders Broman <a.broman58@gmail.com> Tested-by: Petri Dish Buildbot Reviewed-by: Anders Broman <a.broman58@gmail.com>
248 lines
6.4 KiB
C
248 lines
6.4 KiB
C
/* packet-ua.c
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* Routines for UA/UDP (Universal Alcatel over UDP) packet dissection.
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* Copyright 2012, Alcatel-Lucent Enterprise <lars.ruoff@alcatel-lucent.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include "packet-uaudp.h"
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void proto_register_ua_msg(void);
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void proto_reg_handoff_ua_msg(void);
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/*-----------------------------------------------------------------------------
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GLOBALS
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---------------------------------------------------------------------------*/
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#if 0
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static dissector_table_t ua_opcode_dissector_table;
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#endif
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static int proto_ua_msg = -1;
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static gint ett_ua_msg = -1;
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static dissector_handle_t noe_handle;
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static dissector_handle_t ua3g_handle;
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static void uadecode(e_ua_direction direction,
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proto_tree *tree,
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packet_info *pinfo,
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tvbuff_t *tvb,
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gint offset,
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gint opcode,
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gint length)
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{
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switch (opcode & 0x7f) /* suppression of the CP bit */
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{
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case 0x15:
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case 0x16:
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{
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call_dissector(noe_handle,
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tvb_new_subset_length(tvb, offset, length),
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pinfo,
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tree);
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break;
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}
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case 0x00:
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case 0x01:
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case 0x02:
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case 0x03:
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case 0x04:
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case 0x05:
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case 0x06:
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case 0x07: /* Only UA NOE */
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case 0x08: /* Only UA NOE */
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case 0x09:
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case 0x0A:
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case 0x0B:
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case 0x0C:
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case 0x0D:
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case 0x0E:
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case 0x0F:
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case 0x11:
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case 0x12:
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case 0x13:
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case 0x14:
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case 0x17:
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case 0x18:
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case 0x1F: /* case 0x9F */
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case 0x20:
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case 0x21:
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case 0x22:
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case 0x23:
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case 0x24: /* Only IP NOE */
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case 0x25: /* Only IP NOE */
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case 0x26:
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case 0x27:
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case 0x28:
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case 0x29:
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case 0x2A:
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case 0x2B: /* Only UA NOE */
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case 0x2C:
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case 0x2D:
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case 0x2E:
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case 0x30:
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case 0x31:
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case 0x32: /* Only UA NOE */
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case 0x33:
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case 0x35:
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case 0x36: /* IP Phone */
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case 0x38:
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case 0x39:
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case 0x3A:
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case 0x3B:
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case 0x3C:
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case 0x3D:
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case 0x3E:
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case 0x3F:
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case 0x40:
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case 0x41:
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case 0x42:
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case 0x43:
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case 0x44:
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case 0x45:
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case 0x46:
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case 0x47:
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case 0x48:
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case 0x49:
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case 0x4A:
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case 0x4B:
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case 0x4C:
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case 0x4D:
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case 0x4E:
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case 0x4F:
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case 0x50: /* Only UA NOE */
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{
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call_dissector_with_data(ua3g_handle,
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tvb_new_subset_length(tvb, offset, length),
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pinfo,
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tree, &direction);
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break;
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}
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default:
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{
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/* add text to the frame "INFO" column */
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col_append_fstr(pinfo->cinfo, COL_INFO, " - UA3G Message ERR: Opcode (0x%02x) Unknown", tvb_get_guint8(tvb, (offset + 2)));
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call_data_dissector(tvb_new_subset_length(tvb, offset, length),
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pinfo,
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tree);
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break;
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}
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}
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}
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/*-----------------------------------------------------------------------------
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UA DISSECTOR
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---------------------------------------------------------------------------*/
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static void _dissect_ua_msg(tvbuff_t *tvb,
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packet_info *pinfo,
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proto_tree *tree,
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e_ua_direction direction)
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{
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gint offset = 0;
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proto_item *ua_msg_item;
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proto_tree *ua_msg_tree;
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ua_msg_item = proto_tree_add_protocol_format(tree, proto_ua_msg, tvb, 0, -1,
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"Universal Alcatel Protocol, %s",
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((direction == SYS_TO_TERM) ?
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"System -> Terminal" : "Terminal -> System"));
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ua_msg_tree = proto_item_add_subtree(ua_msg_item, ett_ua_msg);
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while (tvb_offset_exists(tvb, offset))
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{
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gint length = tvb_get_letohs(tvb, offset) + 2;
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gint opcode = tvb_get_guint8(tvb, offset+2);
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uadecode(direction, ua_msg_tree, pinfo, tvb, offset, opcode, length);
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offset += length;
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}
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}
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static int dissect_ua_sys_to_term(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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_dissect_ua_msg(tvb, pinfo, tree, SYS_TO_TERM);
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return tvb_captured_length(tvb);
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}
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static int dissect_ua_term_to_sys(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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_dissect_ua_msg(tvb, pinfo, tree, TERM_TO_SYS);
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return tvb_captured_length(tvb);
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}
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/*-----------------------------------------------------------------------------
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DISSECTORS REGISTRATION FUNCTIONS
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---------------------------------------------------------------------------*/
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void proto_register_ua_msg(void)
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{
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static gint *ett[] =
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{
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&ett_ua_msg,
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};
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/* UA dissector registration */
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proto_ua_msg = proto_register_protocol("Universal Alcatel Protocol", "UA", "ua");
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register_dissector("ua_sys_to_term", dissect_ua_sys_to_term, proto_ua_msg);
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register_dissector("ua_term_to_sys", dissect_ua_term_to_sys, proto_ua_msg);
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/* Common subtree array registration */
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proto_register_subtree_array(ett, array_length(ett));
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}
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void proto_reg_handoff_ua_msg(void)
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{
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#if 0 /* Future */
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dissector_handle_t handle_ua_msg;
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/* hooking of UA on UAUDP */
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/* XXX: The following is NG since the same 'pattern' is added twice */
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handle_ua_msg = find_dissector("ua_sys_to_term");
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dissector_add_uint("uaudp.opcode", UAUDP_DATA, handle_ua_msg);
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handle_ua_msg = find_dissector("ua_term_to_sys");
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dissector_add_uint("uaudp.opcode", UAUDP_DATA, handle_ua_msg);
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/* For hooking dissectors to UA */
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ua_opcode_dissector_table =
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register_dissector_table("ua.opcode",
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"ua.opcode",
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FT_UINT8,
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BASE_HEX);
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#endif
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noe_handle = find_dissector_add_dependency("noe", proto_ua_msg);
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ua3g_handle = find_dissector_add_dependency("ua3g", proto_ua_msg);
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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