forked from osmocom/wireshark
fc98b36914
svn path=/trunk/; revision=22340
455 lines
13 KiB
C
455 lines
13 KiB
C
/* packet-k12.c
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* Routines for displaying frames from k12 rf5 files
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*
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* Luis E. Garcia Ontanon <luis.ontanon@gmail.com>
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*
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* $Id$
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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
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include <glib.h>
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#include <string.h>
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#include <epan/packet.h>
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#include <prefs.h>
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#include <epan/report_err.h>
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#include <epan/emem.h>
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#include <epan/uat.h>
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#include <epan/expert.h>
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#include <epan/strutil.h>
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#include "packet-sscop.h"
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#include "packet-umts_fp.h"
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#include <epan/ws_strsplit.h>
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typedef struct _k12_hdls_t {
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char* match;
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char* protos;
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dissector_handle_t* handles;
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} k12_handles_t;
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static int proto_k12 = -1;
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static int hf_k12_port_id = -1;
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static int hf_k12_port_name = -1;
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static int hf_k12_stack_file = -1;
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static int hf_k12_port_type = -1;
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static int hf_k12_atm_vp = -1;
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static int hf_k12_atm_vc = -1;
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static int hf_k12_atm_cid = -1;
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static int hf_k12_ts = -1;
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static gint ett_k12 = -1;
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static gint ett_port = -1;
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static gint ett_stack_item = -1;
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static dissector_handle_t k12_handle;
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static dissector_handle_t data_handle;
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static dissector_handle_t sscop_handle;
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static dissector_handle_t fp_handle;
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extern int proto_sscop;
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extern int proto_fp;
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static emem_tree_t* port_handles = NULL;
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static uat_t* k12_uat = NULL;
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static k12_handles_t* k12_handles = NULL;
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static guint nk12_handles = 0;
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static const value_string k12_port_types[] = {
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{ K12_PORT_DS1, "Ds1" },
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{ K12_PORT_DS0S, "Ds0 Range" },
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{ K12_PORT_ATMPVC, "ATM PVC" },
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{ 0,NULL}
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};
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static void fill_fp_info(fp_info *p_fp_info, guchar *extra_info, guint length) {
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guint adj = 0;
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/* 0x11=control frame 0x30=data frame */
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guint info_type = pntohs(extra_info);
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/* 1=FDD, 2=TDD 3.84, 3=TDD 1.28 */
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guchar radio_mode = extra_info[14];
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guchar channel_type = 0;
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guint i;
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if (!p_fp_info || length < 22)
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return;
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/* Format used by K15, later fields are
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shifted by 8 bytes. */
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if (pntohs(extra_info+2) == 5)
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adj = 8;
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p_fp_info->iface_type = IuB_Interface;
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p_fp_info->release = 0; /* dummy */
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p_fp_info->release_year = 0; /* dummy */
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p_fp_info->release_month = 0; /* dummy */
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/* 1=UL, 2=DL */
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if (extra_info[15] == 1)
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p_fp_info->is_uplink = 1;
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else
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p_fp_info->is_uplink = 0;
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if (info_type == 0x11) /* control frame */
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channel_type = extra_info[21 + adj];
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else if (info_type == 0x30) /* data frame */
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channel_type = extra_info[22 + adj];
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switch (channel_type) {
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case 1:
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p_fp_info->channel = CHANNEL_BCH;
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break;
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case 2:
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p_fp_info->channel = CHANNEL_PCH;
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p_fp_info->paging_indications = 0; /* dummy */
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break;
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case 3:
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p_fp_info->channel = CHANNEL_CPCH;
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break;
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case 4:
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if (radio_mode == 1)
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p_fp_info->channel = CHANNEL_RACH_FDD;
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else if (radio_mode == 2)
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p_fp_info->channel = CHANNEL_RACH_TDD;
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else
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p_fp_info->channel = CHANNEL_RACH_TDD_128;
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break;
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case 5:
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if (radio_mode == 1)
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p_fp_info->channel = CHANNEL_FACH_FDD;
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else
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p_fp_info->channel = CHANNEL_FACH_TDD;
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break;
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case 6:
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if (radio_mode == 2)
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p_fp_info->channel = CHANNEL_USCH_TDD_384;
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else
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p_fp_info->channel = CHANNEL_USCH_TDD_128;
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break;
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case 7:
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if (radio_mode == 1)
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p_fp_info->channel = CHANNEL_DSCH_FDD;
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else
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p_fp_info->channel = CHANNEL_DSCH_TDD;
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break;
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case 8:
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p_fp_info->channel = CHANNEL_DCH;
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break;
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}
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p_fp_info->dch_crc_present = 2; /* information not available */
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if (info_type == 0x30) { /* data frame */
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p_fp_info->num_chans = extra_info[23 + adj];
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for (i = 0; i < (guint)p_fp_info->num_chans && (36+i*104+adj) <= length; ++i) {
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p_fp_info->chan_tf_size[i] = pntohl(extra_info+28+i*104+adj);
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if (p_fp_info->chan_tf_size[i])
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p_fp_info->chan_num_tbs[i] = pntohl(extra_info+32+i*104+adj)
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/ p_fp_info->chan_tf_size[i];
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}
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}
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}
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static void dissect_k12(tvbuff_t* tvb,packet_info* pinfo,proto_tree* tree) {
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static dissector_handle_t data_handles[] = {NULL,NULL};
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proto_item* k12_item;
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proto_tree* k12_tree;
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proto_item* stack_item;
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dissector_handle_t sub_handle = NULL;
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dissector_handle_t* handles;
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guint i;
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k12_item = proto_tree_add_protocol_format(tree, proto_k12, tvb, 0, 0, "Packet from: '%s' (0x%.8x)",
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pinfo->pseudo_header->k12.input_name,
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pinfo->pseudo_header->k12.input);
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k12_tree = proto_item_add_subtree(k12_item, ett_k12);
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proto_tree_add_uint(k12_tree, hf_k12_port_id, tvb, 0,0,pinfo->pseudo_header->k12.input);
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proto_tree_add_string(k12_tree, hf_k12_port_name, tvb, 0,0,pinfo->pseudo_header->k12.input_name);
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stack_item = proto_tree_add_string(k12_tree, hf_k12_stack_file, tvb, 0,0,pinfo->pseudo_header->k12.stack_file);
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k12_item = proto_tree_add_uint(k12_tree, hf_k12_port_type, tvb, 0, 0,
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pinfo->pseudo_header->k12.input_type);
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k12_tree = proto_item_add_subtree(k12_item, ett_port);
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switch ( pinfo->pseudo_header->k12.input_type ) {
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case K12_PORT_DS0S:
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proto_tree_add_uint(k12_tree, hf_k12_ts, tvb, 0,0,pinfo->pseudo_header->k12.input_info.ds0mask);
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break;
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case K12_PORT_ATMPVC:
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{
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gchar* circuit_str = ep_strdup_printf("%u:%u:%u",
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(guint)pinfo->pseudo_header->k12.input_info.atm.vp,
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(guint)pinfo->pseudo_header->k12.input_info.atm.vc,
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(guint)pinfo->pseudo_header->k12.input_info.atm.cid);
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/*
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* XXX: this is prone to collisions!
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* we need an uniform way to manage circuits between dissectors
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*/
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pinfo->circuit_id = g_str_hash(circuit_str);
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proto_tree_add_uint(k12_tree, hf_k12_atm_vp, tvb, 0,0,pinfo->pseudo_header->k12.input_info.atm.vp);
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proto_tree_add_uint(k12_tree, hf_k12_atm_vc, tvb, 0,0,pinfo->pseudo_header->k12.input_info.atm.vc);
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if (pinfo->pseudo_header->k12.input_info.atm.cid)
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proto_tree_add_uint(k12_tree, hf_k12_atm_cid, tvb, 0,0,pinfo->pseudo_header->k12.input_info.atm.cid);
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break;
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}
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default:
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break;
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}
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handles = se_tree_lookup32(port_handles, pinfo->pseudo_header->k12.input);
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if (! handles ) {
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for (i=0 ; i < nk12_handles; i++) {
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if ( epan_strcasestr(pinfo->pseudo_header->k12.stack_file, k12_handles[i].match)
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|| epan_strcasestr(pinfo->pseudo_header->k12.input_name, k12_handles[i].match) ) {
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handles = k12_handles[i].handles;
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break;
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}
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}
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if (!handles) {
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data_handles[0] = data_handle;
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handles = data_handles;
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}
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se_tree_insert32(port_handles, pinfo->pseudo_header->k12.input, handles);
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}
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if (handles == data_handles) {
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proto_tree* stack_tree = proto_item_add_subtree(stack_item,ett_stack_item);
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proto_item* item;
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item = proto_tree_add_text(stack_tree,tvb,0,0,
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"Warning: stk file not matched in the 'K12 Protocols' table");
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PROTO_ITEM_SET_GENERATED(item);
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expert_add_info_format(pinfo, item, PI_UNDECODED, PI_WARN, "unmatched stk file");
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item = proto_tree_add_text(stack_tree,tvb,0,0,
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"Info: You can edit the 'K12 Protocols' table from Preferences->Protocols->k12xx");
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PROTO_ITEM_SET_GENERATED(item);
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call_dissector(data_handle, tvb, pinfo, tree);
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return;
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}
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/* Setup subdissector information */
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for (i = 0; handles[i] && handles[i+1]; ++i) {
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if (handles[i] == sscop_handle) {
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sscop_payload_info *p_sscop_info = p_get_proto_data(pinfo->fd, proto_sscop);
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if (!p_sscop_info) {
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p_sscop_info = ep_alloc0(sizeof(sscop_payload_info));
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if (p_sscop_info)
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p_add_proto_data(pinfo->fd, proto_sscop, p_sscop_info);
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}
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if (p_sscop_info)
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p_sscop_info->subdissector = handles[i+1];
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}
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/* Add more protocols here */
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}
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sub_handle = handles[0];
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/* Setup information required by certain protocols */
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if (sub_handle == fp_handle) {
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fp_info *p_fp_info = p_get_proto_data(pinfo->fd, proto_fp);
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if (!p_fp_info) {
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p_fp_info = ep_alloc0(sizeof(fp_info));
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if (p_fp_info)
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p_add_proto_data(pinfo->fd, proto_fp, p_fp_info);
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}
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fill_fp_info(p_fp_info,
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pinfo->pseudo_header->k12.extra_info,
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pinfo->pseudo_header->k12.extra_length);
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}
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call_dissector(sub_handle, tvb, pinfo, tree);
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}
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static void k12_update_cb(void* r, const char** err) {
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k12_handles_t* h = r;
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gchar** protos;
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guint num_protos, i;
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protos = ep_strsplit(h->protos,":",0);
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for (num_protos = 0; protos[num_protos]; num_protos++) g_strstrip(protos[num_protos]);
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if (h->handles) g_free(h->handles);
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h->handles = g_malloc0(sizeof(dissector_handle_t)*(num_protos < 2 ? 2 : num_protos));
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for (i = 0; i < num_protos; i++) {
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if ( ! (h->handles[i] = find_dissector(protos[i])) ) {
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h->handles[i] = data_handle;
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*err = ep_strdup_printf("Could not find dissector for: '%s'",protos[i]);
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return;
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}
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}
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*err = NULL;
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}
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static void* k12_copy_cb(void* dest, const void* orig, unsigned len _U_) {
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k12_handles_t* d = dest;
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const k12_handles_t* o = orig;
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gchar** protos = ep_strsplit(d->protos,":",0);
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guint num_protos;
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for (num_protos = 0; protos[num_protos]; num_protos++) g_strstrip(protos[num_protos]);
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d->match = g_strdup(o->match);
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d->protos = g_strdup(o->protos);
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d->handles = g_memdup(o->handles,sizeof(dissector_handle_t)*(num_protos+1));
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return dest;
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}
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static void k12_free_cb(void* r) {
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k12_handles_t* h = r;
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if (h->match) g_free(h->match);
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if (h->protos) g_free(h->protos);
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if (h->handles) g_free(h->handles);
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}
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static gboolean protos_chk_cb(void* r _U_, const char* p, unsigned len, void* u1 _U_, void* u2 _U_, const char** err) {
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gchar** protos;
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gchar* line = ep_strndup(p,len);
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guint num_protos, i;
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g_strstrip(line);
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g_strdown(line);
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protos = ep_strsplit(line,":",0);
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for (num_protos = 0; protos[num_protos]; num_protos++) g_strstrip(protos[num_protos]);
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if (!num_protos) {
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*err = ep_strdup_printf("No protocols given");
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return FALSE;
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}
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for (i = 0; i < num_protos; i++) {
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if (!find_dissector(protos[i])) {
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*err = ep_strdup_printf("Could not find dissector for: '%s'",protos[i]);
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return FALSE;
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}
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}
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return TRUE;
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}
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UAT_CSTRING_CB_DEF(k12,match,k12_handles_t)
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UAT_CSTRING_CB_DEF(k12,protos,k12_handles_t)
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/* Make sure handles for various protocols are initialized */
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static void initialize_handles_once(void) {
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static gboolean initialized = FALSE;
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if (!initialized) {
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k12_handle = find_dissector("k12");
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data_handle = find_dissector("data");
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sscop_handle = find_dissector("sscop");
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fp_handle = find_dissector("fp");
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initialized = TRUE;
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}
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}
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void proto_reg_handoff_k12(void) {
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initialize_handles_once();
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dissector_add("wtap_encap", WTAP_ENCAP_K12, k12_handle);
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}
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void
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proto_register_k12(void)
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{
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static hf_register_info hf[] = {
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{ &hf_k12_port_id, { "Port Id", "k12.port_id", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
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{ &hf_k12_port_name, { "Port Name", "k12.port_name", FT_STRING, BASE_NONE, NULL, 0x0,"", HFILL }},
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{ &hf_k12_stack_file, { "Stack file used", "k12.stack_file", FT_STRING, BASE_NONE, NULL, 0x0,"", HFILL }},
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{ &hf_k12_port_type, { "Port type", "k12.input_type", FT_UINT32, BASE_HEX, VALS(k12_port_types), 0x0,"", HFILL }},
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{ &hf_k12_ts, { "Timeslot mask", "k12.ds0.ts", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
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{ &hf_k12_atm_vp, { "ATM VPI", "atm.vpi", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
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{ &hf_k12_atm_vc, { "ATM VCI", "atm.vci", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
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{ &hf_k12_atm_cid, { "AAL2 CID", "aal2.cid", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }}
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};
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static gint *ett[] = {
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&ett_k12,
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&ett_port,
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&ett_stack_item
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};
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static uat_field_t uat_k12_flds[] = {
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UAT_FLD_CSTRING_ISPRINT(k12,match,
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"A string that will be matched (a=A) against an .stk filename or the name of a port.\n"
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"The first match wins, the order of entries in the table is important!."),
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UAT_FLD_CSTRING_OTHER(k12,protos,protos_chk_cb,
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"The lowest layer protocol described by this .stk file (eg: mtp2).\n"
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"Use (sscop:sscf-nni) for sscf-nni (MTP3b) with sscop"),
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UAT_END_FIELDS
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};
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module_t *k12_module;
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proto_k12 = proto_register_protocol("K12xx", "K12xx", "k12");
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proto_register_field_array(proto_k12, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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register_dissector("k12", dissect_k12, proto_k12);
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k12_uat = uat_new("K12 Protocols",
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sizeof(k12_handles_t),
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"k12_protos",
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(void**) &k12_handles,
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&nk12_handles,
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UAT_CAT_FFMT,
|
|
"ChK12ProtocolsSection",
|
|
k12_copy_cb,
|
|
k12_update_cb,
|
|
k12_free_cb,
|
|
uat_k12_flds );
|
|
|
|
k12_module = prefs_register_protocol(proto_k12, NULL);
|
|
|
|
prefs_register_obsolete_preference(k12_module, "config");
|
|
|
|
prefs_register_uat_preference(k12_module, "cfg",
|
|
"K12 Protocols",
|
|
"A table of matches vs stack filenames and relative protocols",
|
|
k12_uat);
|
|
|
|
port_handles = se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "k12_port_handles");
|
|
|
|
}
|