wireshark/packet-ansi_683.c

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/* packet-ansi_683.c
* Routines for ANSI IS-683-A (OTA (Mobile)) dissection
*
* Copyright 2003, Michael Lum <mlum [AT] telostech.com>
* In association with Telos Technology Inc.
*
* $Id: packet-ansi_683.c,v 1.4 2003/12/08 23:40:12 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <gmodule.h>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#include <string.h>
#include "epan/packet.h"
static char *ansi_proto_name = "ANSI IS-683-A (OTA (Mobile))";
static char *ansi_proto_name_short = "IS-683-A";
#define ANSI_683_FORWARD 0
#define ANSI_683_REVERSE 1
/* Initialize the subtree pointers */
static gint ett_ansi_683 = -1;
static gint ett_for_nam_block = -1;
static gint ett_for_sspr_block = -1;
static gint ett_rev_sspr_block = -1;
static gint ett_rev_nam_block = -1;
static gint ett_key_p = -1;
static gint ett_key_g = -1;
static gint ett_rev_feat = -1;
static gint ett_for_val_block = -1;
static gint ett_band_cap = -1;
/* Initialize the protocol and registered fields */
static int proto_ansi_683 = -1;
static int hf_ansi_683_none = -1;
static int hf_ansi_683_for_msg_type = -1;
static int hf_ansi_683_rev_msg_type = -1;
static int hf_ansi_683_length = -1;
static char bigbuf[1024];
static dissector_handle_t data_handle;
static packet_info *g_pinfo;
static proto_tree *g_tree;
/* FUNCTIONS */
static gchar *
my_match_strval(guint32 val, const value_string *vs, gint *idx)
{
gint i = 0;
while (vs[i].strptr)
{
if (vs[i].value == val)
{
*idx = i;
return(vs[i].strptr);
}
i++;
}
*idx = -1;
return(NULL);
}
/* PARAM FUNCTIONS */
#define EXTRANEOUS_DATA_CHECK(edc_len, edc_max_len) \
if ((edc_len) > (edc_max_len)) \
{ \
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb, \
offset, (edc_len) - (edc_max_len), "Extraneous Data"); \
}
#define SHORT_DATA_CHECK(sdc_len, sdc_min_len) \
if ((sdc_len) < (sdc_min_len)) \
{ \
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb, \
offset, (sdc_len), "Short Data (?)"); \
return; \
}
#define EXACT_DATA_CHECK(edc_len, edc_eq_len) \
if ((edc_len) != (edc_eq_len)) \
{ \
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb, \
offset, (edc_len), "Unexpected Data Length"); \
return; \
}
static gchar *
rev_feat_id_type(guint8 feat_id)
{
gchar *str;
switch (feat_id)
{
case 0: str = "NAM Download (DATA_P_REV)"; break;
case 1: str = "Key Exchange (A_KEY_P_REV)"; break;
case 2: str = "System Selection for Preferred Roaming (SSPR_P_REV)"; break;
case 3: str = "Service Programming Lock (SPL_P_REV)"; break;
case 4: str = "Over-The-Air Parameter Administration (OTAPA_P_REV)"; break;
default:
if ((feat_id >= 5) && (feat_id <= 191)) { str = "Reserved for future standardization"; break; }
else if ((feat_id >= 192) && (feat_id <= 254)) { str = "Available for manufacturer-specific features"; break; }
else { str = "Reserved"; break; }
}
return(str);
}
static gchar *
rev_res_code_type(guint8 res_code)
{
gchar *str;
switch (res_code)
{
case 0: str = "Accepted - Operation successful"; break;
case 1: str = "Rejected - Unknown reason"; break;
case 2: str = "Rejected - Data size mismatch"; break;
case 3: str = "Rejected - Protocol version mismatch"; break;
case 4: str = "Rejected - Invalid parameter"; break;
case 5: str = "Rejected - SID/NID length mismatch"; break;
case 6: str = "Rejected - Message not expected in this mode"; break;
case 7: str = "Rejected - BLOCK_ID value not supported"; break;
case 8: str = "Rejected - Preferred roaming list length mismatch"; break;
case 9: str = "Rejected - CRC error"; break;
case 10: str = "Rejected - Mobile station locked"; break;
case 11: str = "Rejected - Invalid SPC"; break;
case 12: str = "Rejected - SPC change denied by the user"; break;
case 13: str = "Rejected - Invalid SPASM"; break;
case 14: str = "Rejected - BLOCK_ID not expected in this mode"; break;
default:
if ((res_code >= 15) && (res_code <= 127)) { str = "Reserved for future standardization"; break; }
else if ((res_code >= 128) && (res_code <= 254)) { str = "Available for manufacturer-specific Result Code definitions"; break; }
else { str = "Reserved"; break; }
}
return(str);
}
#define VERIFY_SPC_VAL_BLOCK 0
#define CHANGE_SPC_VAL_BLOCK 1
#define VALDATE_SPASM_VAL_BLOCK 2
static gchar *
for_val_param_block_type(guint8 block_type)
{
gchar *str;
switch (block_type)
{
case 0: str = "Verify SPC"; break;
case 1: str = "Change SPC"; break;
case 2: str = "Validate SPASM"; break;
default:
if ((block_type >= 3) && (block_type <= 127)) { str = "Reserved for future standardization"; break; }
else if ((block_type >= 128) && (block_type <= 254)) { str = "Available for manufacturer-specific parameter block definitions"; break; }
else { str = "Reserved"; break; }
}
return(str);
}
static gchar *
rev_sspr_param_block_type(guint8 block_type)
{
gchar *str;
switch (block_type)
{
case 0: str = "Preferred Roaming List Dimensions"; break;
case 1: str = "Preferred Roaming List"; break;
default:
if ((block_type >= 2) && (block_type <= 127)) { str = "Reserved for future standardization"; break; }
else if ((block_type >= 128) && (block_type <= 254)) { str = "Available for manufacturer-specific parameter block definitions"; break; }
else { str = "Reserved"; break; }
}
return(str);
}
static gchar *
for_sspr_param_block_type(guint8 block_type)
{
gchar *str;
switch (block_type)
{
case 0: str = "Preferred Roaming List"; break;
default:
if ((block_type >= 1) && (block_type <= 127)) { str = "Reserved for future standardization"; break; }
else if ((block_type >= 128) && (block_type <= 254)) { str = "Available for manufacturer-specific parameter block definitions"; break; }
else { str = "Reserved"; break; }
}
return(str);
}
#define CDMA_ANALOG_NAM_BLOCK 0
#define MDN_NAM_BLOCK 1
#define CDMA_NAM_BLOCK 2
#define IMSI_T_NAM_BLOCK 3
static gchar *
rev_nam_param_block_type(guint8 block_type)
{
gchar *str;
switch (block_type)
{
case 0: str = "CDMA/Analog NAM"; break;
case 1: str = "Mobile Directory Number"; break;
case 2: str = "CDMA NAM"; break;
case 3: str = "IMSI_T"; break;
default:
if ((block_type >= 4) && (block_type <= 127)) { str = "Reserved for future standardization"; break; }
else if ((block_type >= 128) && (block_type <= 254)) { str = "Available for manufacturer-specific parameter block definitions"; break; }
else { str = "Reserved"; break; }
}
return(str);
}
static gchar *
for_nam_param_block_type(guint8 block_type)
{
gchar *str;
switch (block_type)
{
case 0: str = "CDMA/Analog NAM Download"; break;
case 1: str = "Mobile Directory Number"; break;
case 2: str = "CDMA NAM Download"; break;
case 3: str = "IMSI_T"; break;
default:
if ((block_type >= 4) && (block_type <= 127)) { str = "Reserved for future standardization"; break; }
else if ((block_type >= 128) && (block_type <= 254)) { str = "Available for manufacturer-specific parameter block definitions"; break; }
else { str = "Reserved"; break; }
}
return(str);
}
static void
param_verify_spc_val_block(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint32 saved_offset;
guint32 value;
EXACT_DATA_CHECK(len, 3);
saved_offset = offset;
value = tvb_get_ntoh24(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, len,
"Service programming code (%d)",
value);
}
static void
param_cdma_analog_nam_block(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint32 saved_offset;
guint32 value;
guint32 count;
saved_offset = offset;
value = tvb_get_ntohs(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0xffe0, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : First paging channel (FIRSTCHP) used in the home system (%d)",
bigbuf,
(value & 0xffe0) >> 5);
offset++;
value = tvb_get_ntoh24(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x1fffc0, 24);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 3,
"%s : Home system identification (HOME_SID) (%d)",
bigbuf,
(value & 0x1fffc0) >> 6);
other_decode_bitfield_value(bigbuf, value, 0x20, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset + 2, 1,
"%s : Extended address indicator (EX)",
bigbuf);
offset += 2;
value = tvb_get_ntohs(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x1fe0, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : Station class mark (SCM) (%d)",
bigbuf,
(value & 0x1fe0) >> 5);
offset++;
value = tvb_get_ntohs(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x1fe0, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : Mobile station protocol revision number (MOB_P_REV) (%d)",
bigbuf,
(value & 0x1fe0) >> 5);
other_decode_bitfield_value(bigbuf, value, 0x10, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset + 1, 1,
"%s : IMSI_M Class assignment of the mobile station (IMSI_M_CLASS), Class %d",
bigbuf,
(value & 0x10) >> 4);
other_decode_bitfield_value(bigbuf, value, 0x0e, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset + 1, 1,
"%s : Number of IMSI_M address digits (IMSI_M_ADDR_NUM) (%d), %d digits in NMSI",
bigbuf,
(value & 0x0e) >> 1,
(value & 0x10) ? ((value & 0x0e) >> 1) + 4 : 0);
offset++;
value = tvb_get_ntoh24(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x01ff80, 24);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 3,
"%s : Mobile country code (MCC_M)",
bigbuf);
other_decode_bitfield_value(bigbuf, value, 0x7f, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset + 2, 1,
"%s : 11th and 12th digits of the IMSI_M (IMSI__M_11_12)",
bigbuf);
offset += 3;
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 5,
"The least significant 10 digits of the IMSI_M (IMSI_M_S) (34 bits)");
offset += 4;
value = tvb_get_guint8(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x3c, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Access overload class (ACCOLC) (%d)",
bigbuf,
(value & 0x3c) >> 2);
other_decode_bitfield_value(bigbuf, value, 0x02, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Local control status (LOCAL_CONTROL)",
bigbuf);
other_decode_bitfield_value(bigbuf, value, 0x01, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Termination indicator for the home system (MOB_TERM_HOME)",
bigbuf);
offset++;
value = tvb_get_guint8(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x80, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Termination indicator for SID roaming (MOB_TERM_FOR_SID)",
bigbuf);
other_decode_bitfield_value(bigbuf, value, 0x40, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Termination indicator for NID roaming (MOB_TERM_FOR_NID)",
bigbuf);
value = tvb_get_ntohs(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x3fc0, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : Maximum stored SID/NID pairs (MAX_SID_NID) (%d)",
bigbuf,
(value & 0x3fc0) >> 6);
offset++;
value = tvb_get_ntohs(tvb, offset);
count = (value & 0x3fc0) >> 6;
other_decode_bitfield_value(bigbuf, value, 0x3fc0, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : Number of stored SID/NID pairs (STORED_SID_NID) (%d)",
bigbuf,
count);
other_decode_bitfield_value(bigbuf, value, 0x003f, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : SID/NID pairs (MSB)",
bigbuf);
offset += 2;
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, len - (offset - saved_offset),
"SID/NID pairs, Reserved");
}
static void
param_mdn_nam_block(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint32 saved_offset;
guint32 value, count, i;
memset((void *) bigbuf, 0, sizeof(bigbuf));
saved_offset = offset;
value = tvb_get_guint8(tvb, offset);
count = (value & 0xf0) >> 4;
other_decode_bitfield_value(bigbuf, value, 0xf0, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Number of digits (N_DIGITS) (%d)",
bigbuf,
count);
for (i=0; i < count; i++)
{
bigbuf[i] = 0x30 + (value & 0x0f);
if ((i + 1) < count)
{
offset++;
value = tvb_get_guint8(tvb, offset);
bigbuf[i+1] = 0x30 + (value & 0xf0);
i++;
}
}
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, saved_offset, len,
"Mobile directory number, %s",
bigbuf);
if (!(count & 0x01))
{
other_decode_bitfield_value(bigbuf, value, 0x0f, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Reserved",
bigbuf);
}
}
static void
param_cdma_nam_block(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint32 saved_offset;
guint32 value;
guint32 count;
saved_offset = offset;
value = tvb_get_guint8(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0xc0, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Reserved",
bigbuf);
other_decode_bitfield_value(bigbuf, value, 0x20, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Slotted Mode",
bigbuf);
other_decode_bitfield_value(bigbuf, value, 0x1f, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Reserved",
bigbuf);
offset++;
value = tvb_get_guint8(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0xff, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Mobile station protocol revision number (MOB_P_REV) (%d)",
bigbuf,
value);
offset++;
value = tvb_get_ntohs(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x8000, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : IMSI_M Class assignment of the mobile station (IMSI_M_CLASS), Class %d",
bigbuf,
(value & 0x8000) >> 15);
other_decode_bitfield_value(bigbuf, value, 0x7000, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : Number of IMSI_M address digits (IMSI_M_ADDR_NUM) (%d), %d digits in NMSI",
bigbuf,
(value & 0x7000) >> 12,
(value & 0x8000) ? ((value & 0x7000) >> 12) + 4 : 0);
other_decode_bitfield_value(bigbuf, value, 0x0ffc, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : Mobile country code (MCC_M)",
bigbuf);
offset++;
value = tvb_get_ntohs(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x3f80, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : 11th and 12th digits of the IMSI_M (IMSI__M_11_12)",
bigbuf);
offset++;
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 5,
"The least significant 10 digits of the IMSI_M (IMSI_M_S) (34 bits)");
offset += 4;
value = tvb_get_ntohs(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x01e0, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : Access overload class (ACCOLC) (%d)",
bigbuf,
(value & 0x01e0) >> 5);
other_decode_bitfield_value(bigbuf, value, 0x10, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset+1, 1,
"%s : Local control status (LOCAL_CONTROL)",
bigbuf);
other_decode_bitfield_value(bigbuf, value, 0x08, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset+1, 1,
"%s : Termination indicator for the home system (MOB_TERM_HOME)",
bigbuf);
other_decode_bitfield_value(bigbuf, value, 0x04, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset+1, 1,
"%s : Termination indicator for SID roaming (MOB_TERM_FOR_SID)",
bigbuf);
other_decode_bitfield_value(bigbuf, value, 0x02, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset+1, 1,
"%s : Termination indicator for NID roaming (MOB_TERM_FOR_NID)",
bigbuf);
offset++;
value = tvb_get_ntohs(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x01fe, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : Maximum stored SID/NID pairs (MAX_SID_NID) (%d)",
bigbuf,
(value & 0x01fe) >> 1);
offset++;
value = tvb_get_ntohs(tvb, offset);
count = (value & 0x01fe) >> 1;
other_decode_bitfield_value(bigbuf, value, 0x01fe, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : Number of stored SID/NID pairs (STORED_SID_NID) (%d)",
bigbuf,
count);
other_decode_bitfield_value(bigbuf, value, 0x01, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset+1, 1,
"%s : SID/NID pairs (MSB)",
bigbuf);
offset += 2;
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, len - (offset - saved_offset),
"SID/NID pairs, Reserved");
}
static void
param_imsi_t_nam_block(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint32 saved_offset;
guint32 value;
/*
* XXX avoid warning for now, may use this variable
* for validation later
*/
len = len;
saved_offset = offset;
value = tvb_get_guint8(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x80, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : IMSI_T Class assignment of the mobile station (IMSI_T_CLASS), Class %d",
bigbuf,
(value & 0x80) >> 7);
other_decode_bitfield_value(bigbuf, value, 0x70, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Number of IMSI_T address digits (IMSI_T_ADDR_NUM ) (%d), %d digits in NMSI",
bigbuf,
(value & 0x70) >> 4,
(value & 0x80) ? ((value & 0x70) >> 4) + 4 : 0);
value = tvb_get_ntohs(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x0ffc, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : Mobile country code (MCC_T)",
bigbuf);
offset++;
value = tvb_get_ntohs(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x03f8, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : 11th and 12th digits of the IMSI_T (IMSI__T_11_12)",
bigbuf);
offset++;
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 5,
"The least significant 10 digits of the IMSI_T (IMSI_T_S) (34 bits)");
offset += 4;
value = tvb_get_guint8(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x01, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Reserved",
bigbuf);
}
static void
msg_config_req(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct, num_blocks;
gchar *str = NULL;
guint32 i, saved_offset;
SHORT_DATA_CHECK(len, 1);
saved_offset = offset;
num_blocks = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Number of parameter blocks (%d)",
num_blocks);
offset++;
if (num_blocks > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
for (i=0; i < num_blocks; i++)
{
oct = tvb_get_guint8(tvb, offset);
str = rev_nam_param_block_type(oct);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
oct);
offset++;
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_download_req(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct, block_id, block_len;
gchar *str = NULL;
proto_tree *subtree;
proto_item *item;
guint32 i, saved_offset;
SHORT_DATA_CHECK(len, 1);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Number of parameter blocks (%d)",
oct);
offset++;
for (i=0; i < oct; i++)
{
block_id = tvb_get_guint8(tvb, offset);
str = for_nam_param_block_type(block_id);
item =
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
block_id);
subtree = proto_item_add_subtree(item, ett_for_nam_block);
offset++;
block_len = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(subtree, hf_ansi_683_length,
tvb, offset, 1, block_len);
offset++;
if (block_len > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(subtree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
if (block_len > 0)
{
switch (block_id)
{
case CDMA_ANALOG_NAM_BLOCK:
param_cdma_analog_nam_block(tvb, subtree, block_len, offset);
break;
case MDN_NAM_BLOCK:
param_mdn_nam_block(tvb, subtree, block_len, offset);
break;
case CDMA_NAM_BLOCK:
param_cdma_nam_block(tvb, subtree, block_len, offset);
break;
case IMSI_T_NAM_BLOCK:
param_imsi_t_nam_block(tvb, subtree, block_len, offset);
break;
default:
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, block_len, "Block Data");
break;
}
offset += block_len;
}
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_ms_key_req(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct, param_len;
proto_tree *subtree;
proto_item *item;
guint32 saved_offset;
SHORT_DATA_CHECK(len, 3);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"A-Key Protocol Revision (%d)",
oct);
offset++;
param_len = tvb_get_guint8(tvb, offset);
item =
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, param_len + 1,
"Key exchange parameter P");
subtree = proto_item_add_subtree(item, ett_key_p);
proto_tree_add_uint(subtree, hf_ansi_683_length,
tvb, offset, 1, param_len);
offset++;
if (param_len > 0)
{
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, param_len,
"Parameter P");
offset += param_len;
}
param_len = tvb_get_guint8(tvb, offset);
item =
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, param_len + 1,
"Key exchange parameter G");
subtree = proto_item_add_subtree(item, ett_key_g);
proto_tree_add_uint(subtree, hf_ansi_683_length,
tvb, offset, 1, param_len);
offset++;
if (param_len > 0)
{
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, param_len,
"Parameter G");
offset += param_len;
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_key_gen_req(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 param_len;
guint32 saved_offset;
SHORT_DATA_CHECK(len, 2);
saved_offset = offset;
param_len = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_ansi_683_length,
tvb, offset, 1, param_len);
offset++;
if (param_len > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
if (param_len > 0)
{
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, param_len,
"Calculation Result");
offset += param_len;
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_reauth_req(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
EXACT_DATA_CHECK(len, 4);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 4,
"Random Challenge value");
}
static void
msg_sspr_config_req(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct;
gchar *str = NULL;
guint32 saved_offset;
guint32 value;
proto_tree *subtree;
proto_item *item;
SHORT_DATA_CHECK(len, 1);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
str = rev_sspr_param_block_type(oct);
item =
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
oct);
offset++;
if (oct == 0x01)
{
subtree = proto_item_add_subtree(item, ett_rev_sspr_block);
if ((len - (offset - saved_offset)) < 3)
{
proto_tree_add_none_format(subtree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
value = tvb_get_ntohs(tvb, offset);
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, 2,
"Segment offset (%d)",
value);
offset += 2;
oct = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, 1,
"Maximum segment size (%d)",
oct);
offset++;
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_sspr_download_req(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct, block_len;
gchar *str = NULL;
guint32 saved_offset;
proto_tree *subtree;
proto_item *item;
SHORT_DATA_CHECK(len, 2);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
str = for_sspr_param_block_type(oct);
item =
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
oct);
subtree = proto_item_add_subtree(item, ett_for_sspr_block);
offset++;
block_len = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(subtree, hf_ansi_683_length,
tvb, offset, 1, block_len);
offset++;
if (block_len > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(subtree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
if (block_len > 0)
{
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, block_len, "Block Data");
offset += block_len;
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_validate_req(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct, block_id, block_len;
gchar *str = NULL;
proto_tree *subtree;
proto_item *item;
guint32 i, saved_offset, block_offset;
SHORT_DATA_CHECK(len, 1);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Number of parameter blocks (%d)",
oct);
offset++;
if ((guint32)(oct * 2) > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
for (i=0; i < oct; i++)
{
block_offset = offset;
block_id = tvb_get_guint8(tvb, offset);
str = for_val_param_block_type(block_id);
item =
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, -1,
str);
subtree = proto_item_add_subtree(item, ett_for_val_block);
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, 1,
"Block ID (%d)",
block_id);
offset++;
block_len = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(subtree, hf_ansi_683_length,
tvb, offset, 1, block_len);
offset++;
proto_item_set_len(item, (offset - block_offset) + block_len);
if (block_len > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(subtree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
if (block_len > 0)
{
switch (block_id)
{
case VERIFY_SPC_VAL_BLOCK:
param_verify_spc_val_block(tvb, subtree, block_len, offset);
break;
case CHANGE_SPC_VAL_BLOCK:
case VALDATE_SPASM_VAL_BLOCK:
default:
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, block_len, "Block Data");
break;
}
offset += block_len;
}
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_otapa_req(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct;
guint32 saved_offset;
EXACT_DATA_CHECK(len, 1);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
other_decode_bitfield_value(bigbuf, oct, 0x80, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : %s OTAPA session",
bigbuf,
(oct & 0x80) ? "Start" : "Stop");
other_decode_bitfield_value(bigbuf, oct, 0x7f, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Reserved",
bigbuf);
offset++;
}
static void
msg_config_rsp(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct, num_blocks, block_len;
gchar *str = NULL;
guint32 i, saved_offset;
proto_tree *subtree;
proto_item *item;
SHORT_DATA_CHECK(len, 1);
saved_offset = offset;
num_blocks = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Number of parameter blocks (%d)",
num_blocks);
offset++;
if ((guint32)(num_blocks * 2) > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
for (i=0; i < num_blocks; i++)
{
oct = tvb_get_guint8(tvb, offset);
str = rev_nam_param_block_type(oct);
item =
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
oct);
subtree = proto_item_add_subtree(item, ett_rev_nam_block);
offset++;
block_len = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(subtree, hf_ansi_683_length,
tvb, offset, 1, block_len);
offset++;
if (block_len > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(subtree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
if (block_len > 0)
{
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, block_len, "Block Data");
offset += block_len;
}
}
if (num_blocks > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
for (i=0; i < num_blocks; i++)
{
oct = tvb_get_guint8(tvb, offset);
str = rev_res_code_type(oct);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
oct);
offset++;
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_download_rsp(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct, num_blocks;
gchar *str = NULL;
guint32 i, saved_offset;
proto_tree *subtree;
proto_item *item;
SHORT_DATA_CHECK(len, 1);
saved_offset = offset;
num_blocks = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Number of parameter blocks (%d)",
num_blocks);
offset++;
if ((guint32)(num_blocks * 2) > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
for (i=0; i < num_blocks; i++)
{
oct = tvb_get_guint8(tvb, offset);
str = for_nam_param_block_type(oct);
item =
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
oct);
subtree = proto_item_add_subtree(item, ett_for_nam_block);
offset++;
oct = tvb_get_guint8(tvb, offset);
str = rev_res_code_type(oct);
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
oct);
offset++;
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_ms_key_rsp(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct;
gchar *str = NULL;
guint32 saved_offset;
EXACT_DATA_CHECK(len, 1);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
str = rev_res_code_type(oct);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Key exchange result code, %s (%d)",
str,
oct);
offset++;
}
static void
msg_key_gen_rsp(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct, result_len;
gchar *str = NULL;
guint32 saved_offset;
SHORT_DATA_CHECK(len, 2);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
str = rev_res_code_type(oct);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Key exchange result code, %s (%d)",
str,
oct);
offset++;
result_len = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_ansi_683_length,
tvb, offset, 1, result_len);
offset++;
if (result_len > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
if (result_len > 0)
{
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, result_len, "Calculation Result");
offset += result_len;
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_reauth_rsp(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint32 saved_offset;
guint32 value;
EXACT_DATA_CHECK(len, 7);
saved_offset = offset;
value = tvb_get_ntoh24(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0xffffc0, 24);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 3,
"%s : Authentication signature data (AUTHR) (%d)",
bigbuf,
(value & 0xffffc0) >> 6);
offset += 2;
value = tvb_get_ntohs(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0x3fc0, 16);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"%s : Random challenge value (RANDC) (%d)",
bigbuf,
(value & 0x3fc0) >> 6);
other_decode_bitfield_value(bigbuf, value, 0x3f, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset + 1, 1,
"%s : Call history parameter (COUNT) (%d)",
bigbuf,
value & 0x3f);
offset += 2;
value = tvb_get_ntoh24(tvb, offset);
other_decode_bitfield_value(bigbuf, value, 0xffffff, 24);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 3,
"%s : Authentication Data input parameter (AUTH_DATA) (%d)",
bigbuf,
value);
}
static void
msg_commit_rsp(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct;
gchar *str = NULL;
guint32 saved_offset;
EXACT_DATA_CHECK(len, 1);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
str = rev_res_code_type(oct);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Data commit result code, %s (%d)",
str,
oct);
offset++;
}
static void
msg_protocap_rsp(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct, num_feat, add_len;
gchar *str = NULL;
guint32 i, saved_offset;
guint32 value;
proto_tree *subtree;
proto_item *item;
SHORT_DATA_CHECK(len, 5);
saved_offset = offset;
value = tvb_get_ntohs(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"Mobile station firmware revision number (%d)",
value);
offset += 2;
oct = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Mobile station manufacturer<65>s model number (%d)",
oct);
offset++;
num_feat = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Number of features (%d)",
num_feat);
offset++;
if ((guint32)(num_feat * 2) > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
for (i=0; i < num_feat; i++)
{
oct = tvb_get_guint8(tvb, offset);
str = rev_feat_id_type(oct);
item =
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Feature ID, %s (%d)",
str,
oct);
subtree = proto_item_add_subtree(item, ett_rev_feat);
offset++;
oct = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, 1,
"Feature protocol version (%d)",
oct);
offset++;
}
add_len = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_ansi_683_length,
tvb, offset, 1, add_len);
offset++;
if (add_len > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
if (add_len > 0)
{
oct = tvb_get_guint8(tvb, offset);
item =
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Band/Mode Capability Information");
subtree = proto_item_add_subtree(item, ett_band_cap);
other_decode_bitfield_value(bigbuf, oct, 0x80, 8);
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Band Class 0 Analog",
bigbuf);
other_decode_bitfield_value(bigbuf, oct, 0x40, 8);
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Band Class 0 CDMA",
bigbuf);
other_decode_bitfield_value(bigbuf, oct, 0x20, 8);
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Band Class 1 CDMA",
bigbuf);
other_decode_bitfield_value(bigbuf, oct, 0x1f, 8);
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Reserved",
bigbuf);
offset++;
if (add_len > 1)
{
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, add_len - 1,
"More Additional Fields");
offset += (add_len - 1);
}
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_sspr_config_rsp(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct, block_len;
gchar *str = NULL;
guint32 saved_offset;
SHORT_DATA_CHECK(len, 3);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
str = rev_sspr_param_block_type(oct);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
oct);
offset++;
oct = tvb_get_guint8(tvb, offset);
str = rev_res_code_type(oct);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"SSPR Configuration result code, %s (%d)",
str,
oct);
offset++;
block_len = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tree, hf_ansi_683_length,
tvb, offset, 1, block_len);
offset++;
if (block_len > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
if (block_len > 0)
{
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, block_len, "Block Data");
offset += block_len;
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_sspr_download_rsp(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct;
gchar *str = NULL;
guint32 saved_offset;
guint32 value;
EXACT_DATA_CHECK(len, 5);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
str = for_sspr_param_block_type(oct);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
oct);
offset++;
oct = tvb_get_guint8(tvb, offset);
str = rev_res_code_type(oct);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"SSPR Download result code, %s (%d)",
str,
oct);
offset++;
value = tvb_get_ntohs(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 2,
"Segment offset (%d)",
value);
offset += 2;
oct = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Maximum segment size (%d)",
oct);
offset++;
}
static void
msg_validate_rsp(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct, block_id, num_blocks;
gchar *str = NULL;
guint32 i, saved_offset;
proto_tree *subtree;
proto_item *item;
SHORT_DATA_CHECK(len, 1);
saved_offset = offset;
num_blocks = tvb_get_guint8(tvb, offset);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"Number of parameter blocks (%d)",
num_blocks);
offset++;
if ((guint32)(num_blocks * 2) > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
for (i=0; i < num_blocks; i++)
{
block_id = tvb_get_guint8(tvb, offset);
str = for_val_param_block_type(block_id);
item =
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
block_id);
subtree = proto_item_add_subtree(item, ett_for_val_block);
offset++;
oct = tvb_get_guint8(tvb, offset);
str = rev_res_code_type(oct);
proto_tree_add_none_format(subtree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
oct);
offset++;
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static void
msg_otapa_rsp(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset)
{
guint8 oct;
gchar *str = NULL;
guint32 saved_offset;
SHORT_DATA_CHECK(len, 2);
saved_offset = offset;
oct = tvb_get_guint8(tvb, offset);
str = rev_res_code_type(oct);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s (%d)",
str,
oct);
offset++;
oct = tvb_get_guint8(tvb, offset);
other_decode_bitfield_value(bigbuf, oct, 0xfe, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : Reserved",
bigbuf);
other_decode_bitfield_value(bigbuf, oct, 0x01, 8);
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 1,
"%s : NAM_LOCK indicator",
bigbuf);
offset++;
if (oct & 0x01)
{
if (4 > (len - (offset - saved_offset)))
{
proto_tree_add_none_format(tree, hf_ansi_683_none, tvb,
offset, len - (offset - saved_offset), "Short Data (?)");
return;
}
proto_tree_add_none_format(tree, hf_ansi_683_none,
tvb, offset, 4,
"SPASM random challenge");
offset += 4;
}
EXTRANEOUS_DATA_CHECK(len, offset - saved_offset);
}
static const value_string for_msg_type_strings[] = {
{ 0, "Configuration Request" },
{ 1, "Download Request" },
{ 2, "MS Key Request" },
{ 3, "Key Generation Request" },
{ 4, "Re-Authenticate Request" },
{ 5, "Commit Request" },
{ 6, "Protocol Capability Request" },
{ 7, "SSPR Configuration Request" },
{ 8, "SSPR Download Request" },
{ 9, "Validation Request" },
{ 10, "OTAPA Request" },
{ 0, NULL },
};
#define NUM_FOR_MSGS (sizeof(for_msg_type_strings)/sizeof(value_string))
static void (*ansi_683_for_msg_fcn[])(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset) = {
msg_config_req, /* Configuration Request */
msg_download_req, /* Download Request */
msg_ms_key_req, /* MS Key Request */
msg_key_gen_req, /* Key Generation Request */
msg_reauth_req, /* Re-Authenticate Request */
NULL /* No data */, /* Commit Request */
NULL /* No data */, /* Protocol Capability Request */
msg_sspr_config_req, /* SSPR Configuration Request */
msg_sspr_download_req, /* SSPR Download Request */
msg_validate_req, /* Validation Request */
msg_otapa_req, /* OTAPA Request */
NULL, /* NONE */
};
static const value_string rev_msg_type_strings[] = {
{ 0, "Configuration Response" },
{ 1, "Download Response" },
{ 2, "MS Key Response" },
{ 3, "Key Generation Response" },
{ 4, "Re-Authenticate Response" },
{ 5, "Commit Response" },
{ 6, "Protocol Capability Response" },
{ 7, "SSPR Configuration Response" },
{ 8, "SSPR Download Response" },
{ 9, "Validation Response" },
{ 10, "OTAPA Response" },
{ 0, NULL },
};
#define NUM_REV_MSGS (sizeof(rev_msg_type_strings)/sizeof(value_string))
static void (*ansi_683_rev_msg_fcn[])(tvbuff_t *tvb, proto_tree *tree, guint len, guint32 offset) = {
msg_config_rsp, /* Configuration Response */
msg_download_rsp, /* Download Response */
msg_ms_key_rsp, /* MS Key Response */
msg_key_gen_rsp, /* Key Generation Response */
msg_reauth_rsp, /* Re-Authenticate Response */
msg_commit_rsp, /* Commit Response */
msg_protocap_rsp, /* Protocol Capability Response */
msg_sspr_config_rsp, /* SSPR Configuration Response */
msg_sspr_download_rsp, /* SSPR Download Response */
msg_validate_rsp, /* Validation Response */
msg_otapa_rsp, /* OTAPA Response */
NULL, /* NONE */
};
static void
dissect_ansi_683_for_message(tvbuff_t *tvb, proto_tree *ansi_683_tree)
{
guint8 msg_type;
gint idx;
gchar *str = NULL;
msg_type = tvb_get_guint8(tvb, 0);
str = my_match_strval(msg_type, for_msg_type_strings, &idx);
if (str == NULL)
{
return;
}
/*
* No Information column data
*/
proto_tree_add_uint(ansi_683_tree, hf_ansi_683_for_msg_type,
tvb, 0, 1, msg_type);
if (ansi_683_for_msg_fcn[idx] != NULL)
{
(*ansi_683_for_msg_fcn[idx])(tvb, ansi_683_tree, tvb_length(tvb) - 1, 1);
}
}
static void
dissect_ansi_683_rev_message(tvbuff_t *tvb, proto_tree *ansi_683_tree)
{
guint8 msg_type;
gint idx;
gchar *str = NULL;
msg_type = tvb_get_guint8(tvb, 0);
str = my_match_strval(msg_type, rev_msg_type_strings, &idx);
if (str == NULL)
{
return;
}
/*
* No Information column data
*/
proto_tree_add_uint(ansi_683_tree, hf_ansi_683_rev_msg_type,
tvb, 0, 1, msg_type);
(*ansi_683_rev_msg_fcn[idx])(tvb, ansi_683_tree, tvb_length(tvb) - 1, 1);
}
static void
dissect_ansi_683(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *ansi_683_item;
proto_tree *ansi_683_tree = NULL;
g_pinfo = pinfo;
if (check_col(pinfo->cinfo, COL_PROTOCOL))
{
col_set_str(pinfo->cinfo, COL_PROTOCOL, ansi_proto_name_short);
}
/* In the interest of speed, if "tree" is NULL, don't do any work not
* necessary to generate protocol tree items.
*/
if (tree)
{
g_tree = tree;
/*
* create the ansi_683 protocol tree
*/
ansi_683_item =
proto_tree_add_protocol_format(tree, proto_ansi_683, tvb, 0, -1,
"%s %s Link",
ansi_proto_name,
(pinfo->match_port == ANSI_683_FORWARD) ? "Forward" : "Reverse");
ansi_683_tree =
proto_item_add_subtree(ansi_683_item, ett_ansi_683);
if (pinfo->match_port == ANSI_683_FORWARD)
{
dissect_ansi_683_for_message(tvb, ansi_683_tree);
}
else
{
dissect_ansi_683_rev_message(tvb, ansi_683_tree);
}
}
}
/* Register the protocol with Ethereal */
void
proto_register_ansi_683(void)
{
/* Setup list of header fields */
static hf_register_info hf[] =
{
{ &hf_ansi_683_for_msg_type,
{ "Forward Link Message Type",
"ansi_683.for_msg_type",
FT_UINT8, BASE_DEC, VALS(for_msg_type_strings), 0,
"", HFILL }},
{ &hf_ansi_683_rev_msg_type,
{ "Reverse Link Message Type",
"ansi_683.rev_msg_type",
FT_UINT8, BASE_DEC, VALS(rev_msg_type_strings), 0,
"", HFILL }},
{ &hf_ansi_683_length,
{ "Length", "ansi_683.len",
FT_UINT8, BASE_DEC, NULL, 0,
"", HFILL }
},
{ &hf_ansi_683_none,
{ "Sub tree", "ansi_683.none",
FT_NONE, 0, 0, 0,
"", HFILL }
},
};
/* Setup protocol subtree array */
#define NUM_INDIVIDUAL_PARAMS 10
static gint *ett[NUM_INDIVIDUAL_PARAMS];
memset((void *) ett, 0, sizeof(ett));
ett[0] = &ett_ansi_683;
ett[1] = &ett_for_nam_block;
ett[2] = &ett_rev_nam_block;
ett[3] = &ett_key_p;
ett[4] = &ett_key_g;
ett[5] = &ett_rev_feat;
ett[6] = &ett_for_val_block;
ett[7] = &ett_for_sspr_block;
ett[8] = &ett_band_cap;
ett[9] = &ett_rev_sspr_block;
/* Register the protocol name and description */
proto_ansi_683 =
proto_register_protocol(ansi_proto_name, "ANSI IS-683-A (OTA (Mobile))", "ansi_683");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_ansi_683, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_ansi_683(void)
{
dissector_handle_t ansi_683_handle;
ansi_683_handle = create_dissector_handle(dissect_ansi_683, proto_ansi_683);
dissector_add("ansi_map.ota", ANSI_683_FORWARD, ansi_683_handle);
dissector_add("ansi_map.ota", ANSI_683_REVERSE, ansi_683_handle);
dissector_add("ansi_a.ota", ANSI_683_FORWARD, ansi_683_handle);
dissector_add("ansi_a.ota", ANSI_683_REVERSE, ansi_683_handle);
data_handle = find_dissector("data");
}