/*
* read a number and add it to tree
*/
static void
read_number(unsigned int *offset, tvbuff_t *tvb, proto_tree *etch_tree,
int asWhat, guint8 type_code)
{
int byteLength;
read_type(offset, tvb, etch_tree);
byteLength = get_byte_length(type_code);
if (byteLength > 0) {
proto_item *ti;
const gchar *symbol = NULL;
guint32 hash = 0;
gbl_symbol_buffer = ep_strbuf_new_label(""); /* no symbol found yet */
if (byteLength == 4) {
hash = tvb_get_ntohl(tvb, *offset);
symbol = match_strval_ext(hash, gbl_symbols_vs_ext);
if(symbol != NULL) {
asWhat = hf_etch_symbol;
gbl_have_symbol = TRUE;
ep_strbuf_append_printf(gbl_symbol_buffer,"%s",symbol);
}
}
ti = proto_tree_add_item(etch_tree, asWhat, tvb, *offset,
byteLength, ENC_BIG_ENDIAN);
*offset += byteLength;
if (symbol != NULL) {
proto_item_append_text(ti, " (0x%08x) %s", hash, symbol);
}
}
}
/*
* Preparse the message for the info column
*/
static emem_strbuf_t*
get_column_info(tvbuff_t *tvb)
{
int byte_length;
guint8 type_code;
emem_strbuf_t *result_buf;
int my_offset = 0;
/* We've a full PDU: 8 bytes + pdu_packetlen bytes */
result_buf = ep_strbuf_new_label("");
my_offset += (4 + 4 + 1); /* skip Magic, Length, Version */
type_code = tvb_get_guint8(tvb, my_offset);
byte_length = get_byte_length(type_code);
my_offset++;
if (byte_length == 4) {
const gchar *symbol;
guint32 hash;
hash = tvb_get_ntohl(tvb, my_offset);
symbol = match_strval_ext(hash, gbl_symbols_vs_ext);
if (symbol != NULL) {
ep_strbuf_append_printf(result_buf, "%s()", symbol);
}
}
return result_buf;
}
static void
dissect_UDPR1(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *adwin_tree, proto_tree *adwin_debug_tree,
gchar** info_string)
{
const gchar *status_string;
guint32 seq_num, status;
status = tvb_get_letohl(tvb, 0);
status_string = match_strval_ext(status, &error_code_mapping_ext);
if (status_string) {
*info_string = ep_strdup_printf("UDPR1 Status: %s", status_string);
} else {
*info_string = ep_strdup_printf("UDPR1 Undefined error code %d", status);
}
/* Get the transaction identifier */
seq_num = tvb_get_letohl(tvb, 4);
adwin_request_response_handling(tvb, pinfo, adwin_tree, seq_num, ADWIN_RESPONSE);
if (! adwin_tree)
return;
SET_PACKET_TYPE(adwin_tree, APT_UDPR1);
ADWIN_ADD_LE(adwin_tree, status, 0, 4);
ADWIN_ADD_LE(adwin_tree, packet_index, 4, 4);
ADWIN_ADD_LE(adwin_tree, val1, 8, 4);
ADWIN_ADD_LE(adwin_tree, val1f, 8, 4);
ADWIN_ADD_LE(adwin_tree, val2, 12, 4);
ADWIN_ADD_LE(adwin_tree, val3, 16, 4);
ADWIN_ADD_LE(adwin_tree, val4, 20, 4);
ADWIN_ADD_LE(adwin_debug_tree, unused, 24, 8);
}
const char *ipprotostr(const int proto) {
const char *s;
if ((s = match_strval_ext(proto, &ipproto_val_ext)) != NULL)
return s;
s = "Unknown";
#ifdef HAVE_GETPROTOBYNUMBER
/*
* XXX - have another flag for resolving network-layer
* protocol names?
*/
if (g_resolv_flags != 0) {
static char buf[128];
struct protoent *pe;
pe = getprotobynumber(proto);
if (pe) {
g_strlcpy(buf, pe->p_name, sizeof(buf));
s = buf;
}
}
#endif
return s;
}
/* Similar to match_strval_ext except that on failure
* Returns 'unknown_str'
*/
const gchar*
val_to_str_ext_const(const guint32 val, const value_string_ext *vse, const char *unknown_str) {
const gchar *ret;
g_assert(unknown_str != NULL);
ret = match_strval_ext(val, vse);
if (ret != NULL)
return ret;
return unknown_str;
}
/* Similar to match_strval_ext except that on failure
* Formats val with fmt, and returns the resulting string
*/
const gchar*
val_to_str_ext(const guint32 val, const value_string_ext *vse, const char *fmt) {
const gchar *ret;
g_assert(fmt != NULL);
ret = match_strval_ext(val, vse);
if (ret != NULL)
return ret;
return ep_strdup_printf(fmt, val);
}
static void
dissect_UDPR2(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *adwin_tree, proto_tree *adwin_debug_tree,
gchar** info_string)
{
const gchar *status_string;
guint32 i, status, seq_num;
status = tvb_get_letohl(tvb, 0);
status_string = match_strval_ext(status, &error_code_mapping_ext);
if (status_string) {
*info_string = ep_strdup_printf("UDPR2 Status: %s", status_string);
} else {
*info_string = ep_strdup_printf("UDPR2 Undefined error code %d", status);
}
/* Get the transaction identifier */
seq_num = tvb_get_letohl(tvb, 4);
adwin_request_response_handling(tvb, pinfo, adwin_tree, seq_num, ADWIN_RESPONSE);
if (! adwin_tree)
return;
SET_PACKET_TYPE(adwin_tree, APT_UDPR2);
ADWIN_ADD_LE(adwin_tree, status, 0, 4);
ADWIN_ADD_LE(adwin_tree, packet_index, 4, 4);
if (! global_adwin_dissect_data) {
proto_tree_add_text(adwin_debug_tree, tvb, 8, 250 * 4, "Data");
return;
}
for (i = 0; i < 250; i++) {
proto_item *item;
guint32 offset = 8 + i * sizeof(guint32);
gint32 value = tvb_get_letohl(tvb, offset);
void * fvalue = &value;
proto_tree_add_text(adwin_debug_tree, tvb, offset, 4,
"Data[%3d]: %10d - %10f - 0x%08x",
i, value, *(float*)fvalue, value);
item = ADWIN_ADD_LE(adwin_debug_tree, data_int, offset, 4);
PROTO_ITEM_SET_HIDDEN(item);
item = ADWIN_ADD_LE(adwin_debug_tree, data_float, offset, 4);
PROTO_ITEM_SET_HIDDEN(item);
item = ADWIN_ADD_LE(adwin_debug_tree, data_hex, offset, 4);
PROTO_ITEM_SET_HIDDEN(item);
}
}
static void
dissect_UDPR4(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *adwin_tree, proto_tree *adwin_debug_tree, gchar** info_string)
{
const gchar *status_string;
guint32 data_type, i, status, seq_num;
status = tvb_get_letohl(tvb, 0);
status_string = match_strval_ext(status, &error_code_mapping_ext);
if (status_string) {
*info_string = ep_strdup_printf("UDPR4 Status: %s", status_string);
} else {
*info_string = ep_strdup_printf("UDPR4 Undefined error code %d", status);
}
/* Get the transaction identifier */
seq_num = tvb_get_letohl(tvb, 4);
adwin_request_response_handling(tvb, pinfo, adwin_tree, seq_num, ADWIN_RESPONSE);
if (! adwin_tree)
return;
SET_PACKET_TYPE(adwin_tree, APT_UDPR4);
ADWIN_ADD_LE(adwin_tree, status, 0, 4);
ADWIN_ADD_LE(adwin_tree, packet_index, 4, 4);
ADWIN_ADD_LE(adwin_tree, packet_no, 1408, 4);
ADWIN_ADD_LE(adwin_tree, data_type, 1412, 4);
data_type = tvb_get_letohl(tvb, 1412);
if (! global_adwin_dissect_data) {
proto_tree_add_text(adwin_debug_tree, tvb, 8, 350 * 4, "Data");
return;
}
for (i = 0; i < 350; i++) {
proto_item *item;
guint32 offset = 8 + i * sizeof(guint32);
gint32 value = tvb_get_letohl(tvb, offset);
void * fvalue = &value;
switch (data_type) {
case 2:
case 3:
case 4: /* some kind of int, usually int/long */
proto_tree_add_text(adwin_debug_tree, tvb, offset, 4,
"Data[%3d]: %10d - 0x%08x",
i, value, value);
item = ADWIN_ADD_LE(adwin_debug_tree, data_int, offset, 4);
PROTO_ITEM_SET_HIDDEN(item);
item = ADWIN_ADD_LE(adwin_debug_tree, data_hex, offset, 4);
PROTO_ITEM_SET_HIDDEN(item);
break;
case 5: /* float */
proto_tree_add_text(adwin_debug_tree, tvb, offset, 4,
"Data[%3d]: %10f - 0x%08x",
i, *(float*)fvalue, value);
item = ADWIN_ADD_LE(adwin_debug_tree, data_float, offset, 4);
PROTO_ITEM_SET_HIDDEN(item);
item = ADWIN_ADD_LE(adwin_debug_tree, data_hex, offset, 4);
PROTO_ITEM_SET_HIDDEN(item);
break;
default: /* string, double, variant, something funny... */
proto_tree_add_text(adwin_debug_tree, tvb, offset, 4,
"Data[%3d]: 0x%08x",
i, value);
item = ADWIN_ADD_LE(adwin_debug_tree, data_hex, offset, 4);
PROTO_ITEM_SET_HIDDEN(item);
}
}
}
static void
dissect_wtls_handshake(proto_tree *tree, tvbuff_t *tvb, guint offset, guint count)
{
char pdu_msg_type;
nstime_t timeValue;
int client_size = 0;
guint value = 0;
int size = 0;
guint public_key = 0;
char valStr[1024];
const char *valBulk = NULL;
const char *valMac = NULL;
proto_item *ti;
proto_item *cli_key_item;
proto_tree *wtls_msg_type_tree;
proto_tree *wtls_msg_type_item_tree;
proto_tree *wtls_msg_type_item_sub_tree;
proto_tree *wtls_msg_type_item_sub_sub_tree;
pdu_msg_type = tvb_get_guint8 (tvb, offset);
ti = proto_tree_add_uint(tree, hf_wtls_hands, tvb, offset,count, pdu_msg_type);
wtls_msg_type_tree = proto_item_add_subtree(ti, ett_wtls_msg_type);
proto_tree_add_item (wtls_msg_type_tree, hf_wtls_hands_type,
tvb,offset,1,ENC_BIG_ENDIAN);
offset+=1;
count = tvb_get_ntohs (tvb, offset);
proto_tree_add_item (wtls_msg_type_tree, hf_wtls_hands_length,
tvb,offset,2,ENC_BIG_ENDIAN);
offset+=2;
switch(pdu_msg_type) {
case WTLS_HANDSHAKE_CLIENT_HELLO :
ti = proto_tree_add_item(wtls_msg_type_tree, hf_wtls_hands_cli_hello, tvb, offset,
count, ENC_NA);
wtls_msg_type_item_tree = proto_item_add_subtree(ti, ett_wtls_msg_type_item);
proto_tree_add_item (wtls_msg_type_item_tree, hf_wtls_hands_cli_hello_version,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
timeValue.secs = tvb_get_ntohl (tvb, offset);
timeValue.nsecs = 0;
proto_tree_add_time (wtls_msg_type_item_tree, hf_wtls_hands_cli_hello_gmt, tvb,
offset, 4, &timeValue);
offset+=4;
proto_tree_add_item (wtls_msg_type_item_tree, hf_wtls_hands_cli_hello_random,
tvb,offset,12,ENC_NA);
offset+=12;
offset = add_session_id (wtls_msg_type_item_tree,
hf_wtls_hands_cli_hello_session,
hf_wtls_hands_cli_hello_session_str,
tvb, offset);
/* process client_key_ids structure */
count = tvb_get_ntohs (tvb, offset);
ti = proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_cli_hello_cli_key_id, tvb, offset,
count+2, ENC_NA);
wtls_msg_type_item_sub_tree = proto_item_add_subtree(ti, ett_wtls_msg_type_item_sub);
/* display length of client_key_ids structure */
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_cli_hello_cli_key_len,
tvb,offset,2,ENC_BIG_ENDIAN);
offset+=2;
/* cycle through client_key_ids entries */
for (;count > 0;count-=client_size) {
/* get encryption suite id (one byte) */
value = tvb_get_guint8 (tvb, offset);
cli_key_item = proto_tree_add_uint(wtls_msg_type_item_sub_tree,
hf_wtls_hands_cli_hello_key_exchange, tvb, offset,1,
value);
client_size=1;
wtls_msg_type_item_sub_sub_tree = proto_item_add_subtree(cli_key_item,
ett_wtls_msg_type_item_sub_sub);
proto_tree_add_uint(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_exchange_suite,
tvb,offset,1,value);
offset++;
#ifdef DEBUG
fprintf(stderr, "encryption suite = %d, client_size = %d\n", value, client_size);
#endif /* DEBUG */
/* get parameter index (one byte) */
value = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_parameter_index,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
client_size++;
#ifdef DEBUG
fprintf(stderr, "parameter index = %d, client_size = %d\n", value, client_size);
#endif /* DEBUG */
/* explicit parameters present in next field */
if (value == 0xff) {
size = tvb_get_ntohs (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_parameter_set,
tvb,offset,size+2,ENC_ASCII|ENC_NA);
offset+=size+2;
client_size+=size+2;
}
/* get identifier type */
value = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier_type,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
client_size++;
#ifdef DEBUG
fprintf(stderr, "identifier type = %d, client_size = %d\n", value, client_size);
#endif /* DEBUG */
/* identifier present in next field */
/* note: value 0x0 means no identifier */
switch(value) {
case IDENTIFIER_TEXT :
/* text identifier */
/* not tested */
size = add_text_identifier(
tvb, offset,
hf_wtls_hands_cli_hello_key_identifier_charset,
hf_wtls_hands_cli_hello_key_identifier_size,
hf_wtls_hands_cli_hello_key_identifier_str,
wtls_msg_type_item_sub_sub_tree);
offset += size;
client_size += size;
break;
case IDENTIFIER_BIN :
/* binary identifier */
size = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier_size,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier,
tvb,offset,size,ENC_NA);
offset+=size;
client_size+=size+1;
#ifdef DEBUG
fprintf(stderr, "binary id size = %d, client_size = %d\n",
size, client_size);
#endif /* DEBUG */
break;
case IDENTIFIER_SHA_1 :
/* SHA-1 hash of the public key */
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier,
tvb,offset,20,ENC_NA);
offset+=20;
client_size+=20;
#ifdef DEBUG
fprintf(stderr, "SHA-1 hash size = 20, client_size = %d\n",
client_size);
#endif /* DEBUG */
break;
case IDENTIFIER_X509 :
/* X.509 distinguished name */
/* not tested */
size = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier_size,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier,
tvb,offset,size,ENC_NA);
offset+=size;
client_size+=size+1;
#ifdef DEBUG
fprintf(stderr, "X.509 name size = %d, client_size = %d\n",
size, client_size);
#endif /* DEBUG */
break;
}
proto_item_set_len(cli_key_item, client_size);
}
/* process trusted_keys structure */
count = tvb_get_ntohs (tvb, offset);
ti = proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_cli_hello_trust_key_id, tvb, offset,
count+2, ENC_NA);
wtls_msg_type_item_sub_tree = proto_item_add_subtree(ti, ett_wtls_msg_type_item_sub);
/* display length of trusted_keys structure */
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_cli_hello_cli_key_len,
tvb,offset,2,ENC_BIG_ENDIAN);
offset+=2;
for (;count > 0;count-=client_size) {
/* get encryption suite id (one byte) */
value = tvb_get_guint8 (tvb, offset);
cli_key_item = proto_tree_add_uint(wtls_msg_type_item_sub_tree,
hf_wtls_hands_cli_hello_key_exchange, tvb, offset,1,
value);
client_size=1;
wtls_msg_type_item_sub_sub_tree = proto_item_add_subtree(cli_key_item,
ett_wtls_msg_type_item_sub_sub);
proto_tree_add_uint(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_exchange_suite,
tvb,offset,1,value);
offset++;
#ifdef DEBUG
fprintf(stderr, "encryption suite = %d, client_size = %d\n", value, client_size);
#endif /* DEBUG */
/* get parameter index (one byte) */
value = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_parameter_index,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
client_size++;
#ifdef DEBUG
fprintf(stderr, "parameter index = %d, client_size = %d\n", value, client_size);
#endif /* DEBUG */
/* explicit parameters present in next field */
if (value == 0xff) {
size = tvb_get_ntohs (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_parameter_set,
tvb,offset,size+2,ENC_ASCII|ENC_NA);
offset+=size+2;
client_size+=size+2;
}
/* get identifier type */
value = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier_type,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
client_size++;
#ifdef DEBUG
fprintf(stderr, "identifier type = %d, client_size = %d\n", value, client_size);
#endif /* DEBUG */
/* identifier present in next field */
/* note: value 0x0 means no identifier */
switch (value) {
case IDENTIFIER_TEXT :
/* text identifier */
/* not tested */
size = add_text_identifier(
tvb, offset,
hf_wtls_hands_cli_hello_key_identifier_charset,
hf_wtls_hands_cli_hello_key_identifier_size,
hf_wtls_hands_cli_hello_key_identifier_str,
wtls_msg_type_item_sub_sub_tree);
offset += size;
client_size += size;
break;
case IDENTIFIER_BIN :
/* binary identifier */
size = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier_size,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier,
tvb,offset,size,ENC_NA);
offset+=size;
client_size+=size+1;
#ifdef DEBUG
fprintf(stderr, "binary id size = %d, client_size = %d\n",
size, client_size);
#endif /* DEBUG */
break;
case IDENTIFIER_SHA_1 :
/* SHA-1 hash of the public key */
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier,
tvb,offset,20,ENC_NA);
offset+=20;
client_size+=20;
#ifdef DEBUG
fprintf(stderr, "SHA-1 hash size = 20, client_size = %d\n",
client_size);
#endif /* DEBUG */
break;
case IDENTIFIER_X509 :
/* X.509 distinguished name */
/* not tested */
size = tvb_get_guint8 (tvb, offset);
/* need to fetch identifier and display it */
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier_size,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(wtls_msg_type_item_sub_sub_tree,
hf_wtls_hands_cli_hello_key_identifier,
tvb,offset,size,ENC_NA);
offset+=size;
client_size+=size+1;
#ifdef DEBUG
fprintf(stderr, "X.509 name size = %d, client_size = %d\n",
size, client_size);
#endif /* DEBUG */
break;
}
proto_item_set_len(cli_key_item, client_size);
}
/* process cipher_suites structure */
count = tvb_get_guint8 (tvb, offset);
ti = proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_cli_hello_cipher_suite, tvb, offset,
count+1, ENC_NA);
wtls_msg_type_item_sub_tree = proto_item_add_subtree(ti, ett_wtls_msg_type_item_sub);
offset+=1;
for (;count > 0;count-=client_size) {
value = tvb_get_guint8 (tvb, offset);
valBulk = match_strval_ext(value, &wtls_vals_cipher_bulk_ext);
offset++;
client_size=1;
valMac = match_strval_ext(tvb_get_guint8 (tvb, offset), &wtls_vals_cipher_mac_ext);
if (valBulk != NULL)
{
if (valMac != NULL)
{
g_snprintf(valStr,1024,"%s, %s",valBulk,valMac);
}
else
{
g_snprintf(valStr,1024,"%s, Unknown MAC (0x%02x)",valBulk,tvb_get_guint8 (tvb, offset));
}
}
else
{
if (valMac != NULL)
{
g_snprintf(valStr,1024,"Unknown Bulk (0x%02x), %s",value,valMac);
}
else
{
g_snprintf(valStr,1024,"Unknown Bulk (0x%02x), Unknown MAC (0x%02x)",value,
tvb_get_guint8 (tvb, offset));
}
}
offset++;
client_size++;
proto_tree_add_string(wtls_msg_type_item_sub_tree,
hf_wtls_hands_cli_hello_cipher_suite_item, tvb, offset-2,2,
valStr);
}
count = tvb_get_guint8 (tvb, offset);
ti = proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_cli_hello_compression_methods, tvb, offset,
count+1, ENC_NA);
wtls_msg_type_item_sub_tree = proto_item_add_subtree(ti, ett_wtls_msg_type_item_sub);
offset+=1;
for (;count > 0;count-=client_size) {
client_size=0;
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_cli_hello_compression, tvb, offset,1,
ENC_LITTLE_ENDIAN);
offset++;
client_size++;
}
proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_cli_hello_sequence_mode, tvb, offset,
1, ENC_LITTLE_ENDIAN);
offset++;
proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_cli_hello_key_refresh, tvb, offset,
1, ENC_LITTLE_ENDIAN);
break;
case WTLS_HANDSHAKE_SERVER_HELLO :
ti = proto_tree_add_item(wtls_msg_type_tree, hf_wtls_hands_serv_hello, tvb, offset,
count, ENC_NA);
wtls_msg_type_item_tree = proto_item_add_subtree(ti, ett_wtls_msg_type_item);
proto_tree_add_item (wtls_msg_type_item_tree, hf_wtls_hands_serv_hello_version,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
timeValue.secs = tvb_get_ntohl (tvb, offset);
timeValue.nsecs = 0;
proto_tree_add_time (wtls_msg_type_item_tree, hf_wtls_hands_serv_hello_gmt, tvb,
offset, 4, &timeValue);
offset+=4;
proto_tree_add_item (wtls_msg_type_item_tree, hf_wtls_hands_serv_hello_random,
tvb,offset,12,ENC_NA);
offset+=12;
offset = add_session_id (wtls_msg_type_item_tree,
hf_wtls_hands_serv_hello_session,
hf_wtls_hands_serv_hello_session_str,
tvb, offset);
proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_serv_hello_cli_key_id,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
cli_key_item = proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_serv_hello_cipher_suite_item, tvb, offset,2,
ENC_NA);
wtls_msg_type_item_sub_tree = proto_item_add_subtree(cli_key_item,
ett_wtls_msg_type_item_sub);
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_serv_hello_cipher_bulk,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
value = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_serv_hello_cipher_mac,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_serv_hello_compression, tvb, offset,1,
ENC_LITTLE_ENDIAN);
offset++;
proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_serv_hello_sequence_mode, tvb, offset,
1, ENC_LITTLE_ENDIAN);
offset++;
proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_serv_hello_key_refresh, tvb, offset,
1, ENC_LITTLE_ENDIAN);
offset++;
break;
case WTLS_HANDSHAKE_CERTIFICATE :
ti = proto_tree_add_item(wtls_msg_type_tree, hf_wtls_hands_certificates,
tvb, offset,count, ENC_NA);
wtls_msg_type_item_tree = proto_item_add_subtree(ti, ett_wtls_msg_type_item);
count = tvb_get_ntohs (tvb, offset);
offset+=2;
for (;count > 0;count-=client_size) {
cli_key_item = proto_tree_add_item(wtls_msg_type_item_tree,
hf_wtls_hands_certificate, tvb, offset,1,
ENC_NA);
client_size=0;
wtls_msg_type_item_sub_tree = proto_item_add_subtree(cli_key_item,
ett_wtls_msg_type_item_sub);
proto_item_set_len(cli_key_item, client_size);
value = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_type, tvb, offset,1,
ENC_LITTLE_ENDIAN);
offset++;
client_size++;
switch(value) {
case CERTIFICATE_WTLS:
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_version,
tvb, offset,1,
ENC_LITTLE_ENDIAN);
offset++;
client_size++;
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_signature_type,
tvb, offset,1,
ENC_LITTLE_ENDIAN);
offset++;
client_size++;
value = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_issuer_type,
tvb, offset,1,
ENC_LITTLE_ENDIAN);
offset++;
client_size++;
switch (value) {
case IDENTIFIER_NULL :
break;
case IDENTIFIER_TEXT :
value = add_text_identifier(tvb, offset,
hf_wtls_hands_certificate_wtls_issuer_charset,
hf_wtls_hands_certificate_wtls_issuer_size,
hf_wtls_hands_certificate_wtls_issuer_name,
wtls_msg_type_item_sub_tree);
offset += value;
client_size += value;
break;
case IDENTIFIER_BIN :
break;
case IDENTIFIER_SHA_1 :
break;
case IDENTIFIER_X509 :
break;
}
timeValue.secs = tvb_get_ntohl (tvb, offset);
timeValue.nsecs = 0;
proto_tree_add_time (wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_valid_not_before,
tvb, offset, 4, &timeValue);
offset+=4;
client_size+=4;
timeValue.secs = tvb_get_ntohl (tvb, offset);
timeValue.nsecs = 0;
proto_tree_add_time (wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_valid_not_after,
tvb, offset, 4, &timeValue);
offset+=4;
client_size+=4;
value = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_subject_type,
tvb, offset,1,
ENC_LITTLE_ENDIAN);
offset++;
client_size++;
switch (value) {
case IDENTIFIER_NULL :
break;
case IDENTIFIER_TEXT :
value = add_text_identifier(tvb, offset,
hf_wtls_hands_certificate_wtls_subject_charset,
hf_wtls_hands_certificate_wtls_subject_size,
hf_wtls_hands_certificate_wtls_subject_name,
wtls_msg_type_item_sub_tree);
offset += value;
client_size += value;
break;
case IDENTIFIER_BIN :
break;
case IDENTIFIER_SHA_1 :
break;
case IDENTIFIER_X509 :
break;
}
public_key = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_public_key_type,
tvb, offset,1,
ENC_LITTLE_ENDIAN);
offset++;
client_size++;
value = tvb_get_guint8 (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_key_parameter_index,
tvb,offset,1,ENC_BIG_ENDIAN);
offset++;
client_size++;
if (value == 0xff) {
size = tvb_get_ntohs (tvb, offset);
proto_tree_add_item(wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_key_parameter_set,
tvb,offset,size+2,ENC_ASCII|ENC_NA);
offset+=size+2;
client_size+=size+2;
}
switch (public_key) {
case PUBLIC_KEY_RSA :
value = tvb_get_ntohs (tvb, offset);
proto_tree_add_uint(wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_rsa_exponent,
tvb,offset,value+2,value*8);
offset+=2+value;
client_size+=2+value;
value = tvb_get_ntohs (tvb, offset);
proto_tree_add_uint(wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_rsa_modules,
tvb,offset,value+2,value*8);
offset+=2+value;
client_size+=2+value;
break;
case PUBLIC_KEY_ECDH :
break;
case PUBLIC_KEY_ECDSA :
break;
}
value = tvb_get_ntohs (tvb, offset);
proto_tree_add_uint(wtls_msg_type_item_sub_tree,
hf_wtls_hands_certificate_wtls_signature,
tvb,offset,2+value,value*8);
offset+=2+value;
client_size+=2+value;
break;
case CERTIFICATE_X509:
case CERTIFICATE_X968:
value = tvb_get_ntohs (tvb, offset);
offset+=2;
client_size+=2;
client_size += value;
offset += value;
break;
case CERTIFICATE_URL:
value = tvb_get_guint8 (tvb, offset);
offset++;
client_size++;
client_size += value;
offset += value;
break;
}
proto_item_set_len(cli_key_item, client_size);
}
break;
default:
offset+=count;
break;
}
}
