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Adding IE parsing.

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Signed-off-by: stephb9959 <stephane.bourque@gmail.com>
This commit is contained in:
stephb9959
2022-06-02 23:15:26 -07:00
parent ce483ba51c
commit 9339ae893a
1 changed files with 110 additions and 8 deletions
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118
src/ParseWifiScan.h
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@@ -636,6 +636,34 @@ namespace OpenWifi {
{ 0, NULL }
};
static const value_string hta_ext_chan_offset_flag = {
{0x00, "No Extension Channel"},
{0x01, "Extension Channel above control channel"},
{0x02, "Undefined"},
{0x03, "Extension Channel below control channel"},
{0x00, NULL}
};
static const value_string hta_service_interval_flag = {
{0x00, "5ms"},
{0x01, "10ms"},
{0x02, "15ms"},
{0x03, "20ms"},
{0x04, "25ms"},
{0x05, "30ms"},
{0x06, "35ms"},
{0x07, "40ms"},
{0x00, NULL}
};
static const value_string hta_operating_mode_flag = {
{0x00, "Pure HT, no protection"},
{0x01, "There may be non-HT devices (control & ext channel)"},
{0x02, "No non-HT is associated, but at least 1 20MHz is. protect on"},
{0x03, "Mixed: no non-HT is associated, protect on"},
{0x00, NULL}
};
const char * VALS(const value_string &vals, uint v) {
for(const auto &e:vals) {
if(e.first==v && e.second!=NULL)
@@ -922,12 +950,8 @@ namespace OpenWifi {
content["MCS Set"]["Rx Bitmask Bits 24-31"] = bitString(data[3]);
}
inline nlohmann::json WFS_WLAN_EID_HT_CAPABILITY(const std::vector<unsigned char> &data) {
nlohmann::json new_ie;
nlohmann::json content;
if(data.size()==26) {
void dissect_ht_capability_ie(const unsigned char *data,uint size, nlohmann::json & content) {
if(size==26) {
uint offset = 0 ;
uint16_t ht_caps = data[offset+1] * 256 + data[offset];
content["HT Capabilities Info"]["HT LDPC coding capability"] = bitSet(ht_caps,0);
@@ -991,9 +1015,47 @@ namespace OpenWifi {
content["Antenna Selection (ASEL) Capabilities"]["Antenna Indices Feedback"] = (caps & 0x00000010) >> 4;
content["Antenna Selection (ASEL) Capabilities"]["Rx ASEL"] = (caps & 0x00000020) >> 5;
content["Antenna Selection (ASEL) Capabilities"]["Tx Sounding PPDUs"] = (caps & 0x00000040) >> 6;
}
}
void dissect_ht_info_ie_1_0(const unsigned char *data, uint size, nlohmann::json & content)
{
if (size != 22) {
return;
}
uint offset=0;
content["HT Control Channel"] = data[offset++];
auto htcaps = data[offset++];
content["HT Additional Capabilities"]["Extension Channel Offset"] = VALS(hta_ext_chan_offset_flag, htcaps & 0x0003);
content["HT Additional Capabilities"]["Recommended Tx Channel Width"] = (htcaps & 0x0003) >> 2;
content["HT Additional Capabilities"]["Reduced Interframe Spacing (RIFS) Mode"] = (htcaps & 0x0008) >> 3;
content["HT Additional Capabilities"]["Controlled Access Only"] = (htcaps & 0x0010) >> 4;
content["HT Additional Capabilities"]["Service Interval Granularity"] = VALS(hta_service_interval_flag, (htcaps & 0x00e0) >> 5);
htcaps = GetUInt16(data,offset);
content["HT Additional Capabilities"]["Operating Mode"] = VALS(hta_operating_mode_flag, (htcaps & 0x0003) >> 0);
content["HT Additional Capabilities"]["Non Greenfield (GF) devices Present"] = (htcaps & 0x0004) >> 2;
htcaps = GetUInt16(data,offset);
content["HT Additional Capabilities"]["Basic STB Modulation and Coding Scheme (MCS)"] = (htcaps & 0x007f) >> 0;
content["HT Additional Capabilities"]["Dual Clear To Send (CTS) Protection"] = (htcaps & 0x0080) >> 7;
content["HT Additional Capabilities"]["Secondary Beacon"] = (htcaps & 0x0100) >> 8;
content["HT Additional Capabilities"]["L-SIG TXOP Protection Support"] = (htcaps & 0x0200) >> 9;
content["HT Additional Capabilities"]["Phased Coexistence Operation (PCO) Active"] = (htcaps & 0x0400) >> 10;
content["HT Additional Capabilities"]["Phased Coexistence Operation (PCO) Phase"] = (htcaps & 0x0800) >> 11;
ParseMCSset(&data[offset],content);
}
inline nlohmann::json WFS_WLAN_EID_HT_CAPABILITY(const std::vector<unsigned char> &data) {
nlohmann::json new_ie;
nlohmann::json content;
if(data.size()==26) {
dissect_ht_capability_ie(&data[0],data.size(),content);
}
new_ie["name"]="HT Capabilities";
new_ie["content"]=content;
new_ie["type"]=WLAN_EID_HT_CAPABILITY;
@@ -1500,14 +1562,37 @@ namespace OpenWifi {
inline nlohmann::json dissect_vendor_ie_rsn(const unsigned char *b, uint l) {
nlohmann::json ie;
ie["vendor"] = "Wi-Fi : RSN";
b++;l++;
switch(b[0]) {
case 4: {
ie["RSN PMKID"] = BufferToHex(&b[1],16);
}
break;
default:
ie["RSN Unknown"] = BufferToHex(&b[1],l-1);
break;
}
return ie;
}
inline nlohmann::json dissect_vendor_ie_ht(const unsigned char *b, uint l) {
nlohmann::json ie;
ie["vendor"] = "Wi-Fi : 802.11 Pre-N";
b++;l++;
--l;
auto type = b[0];
switch(type) {
case 51: {
dissect_ht_capability_ie(&b[1],l-1,ie);
}
break;
case 52: {
dissect_ht_info_ie_1_0(&b[1],l-1,ie);
}
break;
default:
ie["802.11n (Pre) Unknown Data"] = BufferToHex(&b[1],l-1);
break;
}
return ie;
}
@@ -1607,6 +1692,23 @@ namespace OpenWifi {
nlohmann::json content;
std::cout << BufferToHex(&data[0],data.size()) << std::endl;
uint offset=0;
auto sub_ie = data[offset++];
switch (sub_ie) {
case WLAN_EID_EXT_HE_CAPABILITY: {
} break;
case WLAN_EID_EXT_HE_OPERATION: {
} break;
case WLAN_EID_EXT_HE_MU_EDCA: {
} break;
default:
content["Extension EID"] = BufferToHex(&data[0],1);
content["Block"] = BufferToHex(&data[1],data.size()-1);
break;
}
new_ie["name"]="EI Extensions";
new_ie["content"]=content;