?? plugins-wimax-wimax_utils.c
字號:
tlv_tree = add_tlv_subtree(&tlv_info, ett_sa_descriptor_decoder, tree, hf_pkm_attr_sa_service_type, tvb, offset, tlv_len, FALSE);
proto_tree_add_item(tlv_tree, hf_pkm_attr_sa_service_type, tvb, offset, tlv_len, FALSE);
break;
case PKM_ATTR_CRYPTO_SUITE:
/* add subtree */
tlv_tree = add_tlv_subtree(&tlv_info, ett_sa_descriptor_decoder, tree, hf_pkm_msg_crypto_suite, tvb, offset, tlv_len, FALSE);
proto_tree_add_item(tlv_tree, hf_pkm_msg_crypto_suite_msb, tvb, offset, 1, FALSE);
proto_tree_add_item(tlv_tree, hf_pkm_msg_crypto_suite_middle, tvb, offset, 1, FALSE);
proto_tree_add_item(tlv_tree, hf_pkm_msg_crypto_suite_lsb, tvb, offset, 1, FALSE);
break;
default:
tlv_tree = add_tlv_subtree(&tlv_info, ett_sa_descriptor_decoder, tree, hf_pkm_msg_unknown_type, tvb, offset, tlv_len, FALSE);
proto_tree_add_item(tlv_tree, hf_pkm_msg_unknown_type, tvb, offset, tlv_len, FALSE);
break;
}
offset += tlv_len;
} /* end of TLV process while loop */
}
/******************************************************************/
/* wimax_security_capabilities_decoder() */
/* decode and display the WiMax Security Capabilities */
/* parameter: */
/* tvb - pointer of the tvb of service flow encodings */
/* tree - pointer of Wireshark display tree */
/* pinfo - pointer of Wireshark packet information structure */
/******************************************************************/
void wimax_security_capabilities_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint offset;
guint tvb_len, tlv_len, tlv_value_offset;
gint tlv_type;
proto_tree *tlv_tree = NULL;
tlv_info_t tlv_info;
/* get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* do nothing if the TLV fields is not exist */
if(!tvb_len)
return;
/* report error if the packet size is less than 2 bytes (type+length) */
if(tvb_len < 2)
{ /* invalid tlv info */
if(pinfo->cinfo)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Invalid Security Capabilities");
}
return;
}
/* process Security Capabilities (11.9.13) */
for(offset = 0; offset < tvb_len; )
{
/* get the TLV information */
init_tlv_info(&tlv_info, tvb, offset);
/* get the TLV type */
tlv_type = get_tlv_type(&tlv_info);
/* get the TLV length */
tlv_len = get_tlv_length(&tlv_info);
if(tlv_type == -1 || tlv_len > MAX_TLV_LEN || tlv_len < 1)
{ /* invalid tlv info */
if(pinfo->cinfo)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Security Capabilities TLV error");
}
proto_tree_add_item(tree, hf_cst_invalid_tlv, tvb, offset, (tvb_len - offset), FALSE);
break;
}
/* get the TLV value offset */
tlv_value_offset = get_tlv_value_offset(&tlv_info);
#ifdef DEBUG /* for debug only */
proto_tree_add_protocol_format(tree, proto_wimax_utility_decoders, tvb, offset, (tlv_len + tlv_value_offset), "Security Capabilities TLV Type: %u (%u bytes, offset=%u, tvb_len=%u)", tlv_type, (tlv_len + tlv_value_offset), offset, tvb_len);
#endif
/* update the offset for the TLV value */
offset += tlv_value_offset;
/* parse Security Capabilities (table 374) */
switch (tlv_type)
{
case PKM_ATTR_CRYPTO_LIST:
tlv_tree = add_protocol_subtree(&tlv_info, ett_security_capabilities_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "Cryptographic-Suite List (%u bytes)", tlv_len);
/* add subtree */
wimax_cryptographic_suite_list_decoder(tvb_new_subset(tvb, offset, tlv_len, tlv_len), pinfo, tlv_tree);
break;
default:
tlv_tree = add_tlv_subtree(&tlv_info, ett_security_capabilities_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, FALSE);
proto_tree_add_item(tlv_tree, hf_pkm_msg_unknown_type, tvb, offset, tlv_len, FALSE);
break;
}
offset += tlv_len;
} /* end of TLV process while loop */
}
/******************************************************************/
/* wimax_vendor_specific_information_decoder() */
/* decode and display the WiMax Vendor-Specific Information */
/* parameter: */
/* tvb - pointer of the tvb of service flow encodings */
/* tree - pointer of Wireshark display tree */
/* pinfo - pointer of Wireshark packet information structure */
/******************************************************************/
void wimax_vendor_specific_information_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *tlv_tree = NULL;
guint offset;
guint tvb_len, tlv_len, tlv_value_offset;
gint tlv_type;
tlv_info_t tlv_info;
/* get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* do nothing if the TLV fields is not exist */
if(!tvb_len)
return;
/* report error if the packet size is less than 2 bytes (type+length) */
if(tvb_len < 2)
{ /* invalid tlv info */
if(pinfo->cinfo)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Invalid Vendor Specific Info");
}
proto_tree_add_text(tree, tvb, 0, tvb_len, "Invalid TLV info");
return;
}
/* process Vendor Specific Information (11.1.6) */
for(offset = 0; offset < tvb_len; )
{
/* get the TLV information */
init_tlv_info(&tlv_info, tvb, offset);
/* get the TLV type */
tlv_type = get_tlv_type(&tlv_info);
/* get the TLV length */
tlv_len = get_tlv_length(&tlv_info);
if(tlv_type == -1 || tlv_len > MAX_TLV_LEN || tlv_len < 1)
{ /* invalid tlv info */
if(pinfo->cinfo)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Vendor Specific Info TLV error");
}
proto_tree_add_item(tree, hf_cst_invalid_tlv, tvb, offset, (tvb_len - offset), FALSE);
break;
}
/* get the TLV value offset */
tlv_value_offset = get_tlv_value_offset(&tlv_info);
#ifdef DEBUG /* for debug only */
proto_tree_add_protocol_format(tree, proto_wimax_utility_decoders, tvb, offset, (tlv_len + tlv_value_offset), "Vendor Specific Info TLV Type: %u (%u bytes, offset=%u, tvb_len=%u)", tlv_type, (tlv_len + tlv_value_offset), offset, tvb_len);
#endif
/* parse Vendor Specific Information (11.1.6) */
if(tlv_type == VENDOR_ID_ENCODING)
{
/* decode and display the Vendor ID Encoding */
tlv_tree = add_tlv_subtree(&tlv_info, ett_vendor_id_encoding_decoder, tree, hf_common_tlv_vendor_id, tvb, (offset + tlv_value_offset), tlv_len, FALSE);
proto_tree_add_item(tlv_tree, hf_common_tlv_vendor_id, tvb, (offset + tlv_value_offset), tlv_len, FALSE);
}
else
{
/* decode and display the Vendor Specific Info */
proto_tree_add_item(tree, hf_common_tlv_vendor_specific_type, tvb, offset, 1, FALSE);
if(get_tlv_length_type(&tlv_info) == 0)
{ /* single byte TLV length */
proto_tree_add_item(tree, hf_common_tlv_vendor_specific_length, tvb, (offset + 1), 1, FALSE);
}
else
{ /* multiple bytes TLV length */
/* display the length of the TLV length with MSB */
proto_tree_add_item(tree, hf_common_tlv_vendor_specific_length_size, tvb, (offset + 1), 1, FALSE);
if(get_tlv_size_of_length(&tlv_info))
{ /* display the multiple byte TLV length */
proto_tree_add_text(tree, tvb, (offset + 2), get_tlv_size_of_length(&tlv_info), "Vendor Specific Length: %u", get_tlv_size_of_length(&tlv_info));
}
else
{ /* length = 0 */
continue;
}
}
proto_tree_add_item(tree, hf_common_tlv_vendor_specific_value, tvb, (offset + tlv_value_offset), tlv_len, FALSE);
}
/* update the offset */
offset += tlv_value_offset + tlv_len;
}
}
/******************************************************************/
/* wimax_common_tlv_encoding_decoder() */
/* decode and display the WiMax Common TLV Encoding (Table 346) */
/* parameter: */
/* tvb - pointer of the tvb of service flow encodings */
/* tree - pointer of Wireshark display tree */
/* pinfo - pointer of Wireshark packet information structure */
/******************************************************************/
guint wimax_common_tlv_encoding_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint offset, value;
guint tvb_len, tlv_len, tlv_value_offset;
gint tlv_type;
proto_tree *tlv_tree = NULL;
tlv_info_t tlv_info;
gfloat current_power;
/* get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* do nothing if the TLV fields is not exist */
if(!tvb_len)
return 0;
/* report error if the packet size is less than 2 bytes (type+length) */
if(tvb_len < 2)
{ /* invalid tlv info */
if(pinfo->cinfo)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Invalid Common TLV encoding");
}
proto_tree_add_item(tree, hf_cst_invalid_tlv, tvb, 0, tvb_len, FALSE);
return 0;
}
/* process Common TLV Encoding (11.1) */
for(offset = 0; offset < tvb_len; )
{
/* get the TLV information */
init_tlv_info(&tlv_info, tvb, offset);
/* get the TLV type */
tlv_type = get_tlv_type(&tlv_info);
/* get the TLV length */
tlv_len = get_tlv_length(&tlv_info);
if(tlv_type == -1 || tlv_len > MAX_TLV_LEN || tlv_len < 1)
{ /* invalid tlv info */
if(pinfo->cinfo)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Common TLV encoding TLV error");
}
proto_tree_add_item(tree, hf_cst_invalid_tlv, tvb, offset, (tvb_len - offset), FALSE);
break;
}
/* get the TLV value offset */
tlv_value_offset = get_tlv_value_offset(&tlv_info);
#ifdef DEBUG /* for debug only */
proto_tree_add_protocol_format(tree, proto_wimax_utility_decoders, tvb, offset, (tlv_len + tlv_value_offset), "Common TLV Encoding TLV Type: %u (%u bytes, offset=%u, tvb_len=%u)", tlv_type, (tlv_len + tlv_value_offset), offset, tvb_len);
#endif
/* update the offset for the TLV value */
offset += tlv_value_offset;
/* parse Common TLV Encoding (table 346) */
switch (tlv_type)
{
case VENDOR_SPECIFIC_INFO:
/* display Vendor-Specific Information */
/* add subtree */
tlv_tree = add_protocol_subtree(&tlv_info, ett_vendor_specific_info_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "Vendor-Specific Information (%u bytes)", tlv_len);
/* decode and display the Vendor-Specific Information */
wimax_vendor_specific_information_decoder(tvb_new_subset(tvb, offset, tlv_len, tlv_len), pinfo, tlv_tree);
break;
case VENDOR_ID_ENCODING:
/* display Vendor ID Encoding */
/* add subtree */
tlv_tree = add_protocol_subtree(&tlv_info, ett_vendor_specific_info_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "Vendor ID Encoding (%u bytes)", tlv_len);
/* decode and display the Vendor ID Encoding */
proto_tree_add_item(tlv_tree, hf_common_tlv_vendor_id, tvb, offset, tlv_len, FALSE);
break;
case DSx_UPLINK_FLOW:
/* display Uplink Service Flow Encodings info */
/* add subtree */
tlv_tree = add_protocol_subtree(&tlv_info, ett_ul_service_flow_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "Uplink Service Flow Encodings (%u bytes)", tlv_len);
/* decode and display the UL Service Flow Encodings */
wimax_service_flow_encodings_decoder(tvb_new_subset(tvb, offset, tlv_len, tlv_len), pinfo, tlv_tree);
break;
case DSx_DOWNLINK_FLOW:
/* display Downlink Service Flow Encodings info */
/* add subtree */
tlv_tree = add_protocol_subtree(&tlv_info, ett_dl_service_flow_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "Downlink Service Flow Encodings (%u bytes)", tlv_len);
/* decode and display the DL Service Flow Encodings */
wimax_service_flow_encodings_decoder(tvb_new_subset(tvb,offset, tlv_len, tlv_len), pinfo, tlv_tree);
break;
case CURRENT_TX_POWER:
tlv_tree = add_protocol_subtree(&tlv_info, ett_dl_service_flow_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "Current Transmitted Power (%u byte(s))", tlv_len);
value = tvb_get_guint8(tvb, offset);
current_power = (gfloat)(value - 128) / 2;
proto_tree_add_text(tlv_tree, tvb, offset, 1, "Current Transmitted Power: %.2f dBm (Value: 0x%x)", (gdouble)current_power, value);
break;
case MAC_VERSION_ENCODING:
/* display MAC Version Encoding */
/* add subtree */
tlv_tree = add_protocol_subtree(&tlv_info, ett_vendor_specific_info_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "MAC Version Encoding (%u byte)", tlv_len);
/* decode and display the MAC Version Encoding */
proto_tree_add_item(tlv_tree, hf_common_tlv_mac_version, tvb, offset, tlv_len, FALSE);
break;
case HMAC_TUPLE: /* Table 348d */
tlv_tree = add_protocol_subtree(&tlv_info, ett_vendor_specific_info_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "HMAC Tuple (%u byte(s))", tlv_len);
/* decode and display the HMAC Tuple */
wimax_hmac_tuple_decoder(tlv_tree, tvb, offset, tlv_len);
break;
case CMAC_TUPLE: /* Table 348b */
tlv_tree = add_protocol_subtree(&tlv_info, ett_vendor_specific_info_decoder, tree, proto_wimax_utility_decoders, tvb, offset, tlv_len, "HMAC Tuple (%u byte(s))", tlv_len);
/* decode and display the CMAC Tuple */
wimax_cmac_tuple_decoder(tlv_tree, tvb, offset, tlv_len);
break;
default:
/* Back to calling routine to finish decoding. */
return offset - tlv_value_offset; /* Ret amount decoded. */
break;
}
offset += tlv_len;
} /* end of while loop */
return offset;
}
取自
http://anonsvn.wireshark.org/wireshark/trunk 的 plugins/wimax/wimax_utils.c
- GPL - C
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