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// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// This code is derived from the 'iw' source code. The copyright and license
// of that code is as follows:
//
// Copyright (c) 2007, 2008 Johannes Berg
// Copyright (c) 2007 Andy Lutomirski
// Copyright (c) 2007 Mike Kershaw
// Copyright (c) 2008-2009 Luis R. Rodriguez
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#include "shill/nl80211_message.h"
#include <netlink/msg.h>
#include <netlink/netlink.h>
#include <limits>
#include <map>
#include <string>
#include <vector>
#include <base/bind.h>
#include <base/stringprintf.h>
#include "shill/attribute_list.h"
#include "shill/ieee80211.h"
#include "shill/logging.h"
#include "shill/netlink_attribute.h"
#include "shill/refptr_types.h"
using base::Bind;
using base::LazyInstance;
using base::StringAppendF;
using std::map;
using std::string;
using std::vector;
namespace shill {
namespace {
LazyInstance<Nl80211MessageDataCollector> g_datacollector =
LAZY_INSTANCE_INITIALIZER;
} // namespace
const uint8_t Nl80211Frame::kMinimumFrameByteCount = 26;
const uint8_t Nl80211Frame::kFrameTypeMask = 0xfc;
const char Nl80211Message::kBogusMacAddress[] = "XX:XX:XX:XX:XX:XX";
const unsigned int Nl80211Message::kEthernetAddressBytes = 6;
const char Nl80211Message::kMessageTypeString[] = "nl80211";
map<uint16_t, string> *Nl80211Message::reason_code_string_ = NULL;
map<uint16_t, string> *Nl80211Message::status_code_string_ = NULL;
uint16_t Nl80211Message::nl80211_message_type_ = kIllegalMessageType;
// static
uint16_t Nl80211Message::GetMessageType() {
return nl80211_message_type_;
}
// static
void Nl80211Message::SetMessageType(uint16_t message_type) {
if (message_type == NetlinkMessage::kIllegalMessageType) {
LOG(FATAL) << "Absolutely need a legal message type for Nl80211 messages.";
}
nl80211_message_type_ = message_type;
}
bool Nl80211Message::InitFromNlmsg(const nlmsghdr *const_msg) {
if (!const_msg) {
LOG(ERROR) << "Null |msg| parameter";
return false;
}
ByteString message(reinterpret_cast<const unsigned char *>(const_msg),
const_msg->nlmsg_len);
if (!InitAndStripHeader(&message)) {
return false;
}
// Attributes.
// Parse the attributes from the nl message payload into the 'tb' array.
nlattr *tb[NL80211_ATTR_MAX + 1];
nla_parse(tb, NL80211_ATTR_MAX,
reinterpret_cast<nlattr *>(message.GetData()), message.GetLength(),
NULL);
for (int i = 0; i < NL80211_ATTR_MAX + 1; ++i) {
if (tb[i]) {
// TODO(wdg): When Nl80211Messages instantiate their own attributes,
// this call should, instead, call |SetAttributeFromNlAttr|.
attributes_->CreateAndInitAttribute(
i, tb[i], Bind(&NetlinkAttribute::NewNl80211AttributeFromId));
}
}
// Convert integer values provided by libnl (for example, from the
// NL80211_ATTR_STATUS_CODE or NL80211_ATTR_REASON_CODE attribute) into
// strings describing the status.
if (!reason_code_string_) {
reason_code_string_ = new map<uint16_t, string>;
(*reason_code_string_)[IEEE_80211::kReasonCodeUnspecified] =
"Unspecified reason";
(*reason_code_string_)[
IEEE_80211::kReasonCodePreviousAuthenticationInvalid] =
"Previous authentication no longer valid";
(*reason_code_string_)[IEEE_80211::kReasonCodeSenderHasLeft] =
"Deauthentcated because sending STA is leaving (or has left) IBSS or "
"ESS";
(*reason_code_string_)[IEEE_80211::kReasonCodeInactivity] =
"Disassociated due to inactivity";
(*reason_code_string_)[IEEE_80211::kReasonCodeTooManySTAs] =
"Disassociated because AP is unable to handle all currently associated "
"STAs";
(*reason_code_string_)[IEEE_80211::kReasonCodeNonAuthenticated] =
"Class 2 frame received from nonauthenticated STA";
(*reason_code_string_)[IEEE_80211::kReasonCodeNonAssociated] =
"Class 3 frame received from nonassociated STA";
(*reason_code_string_)[IEEE_80211::kReasonCodeDisassociatedHasLeft] =
"Disassociated because sending STA is leaving (or has left) BSS";
(*reason_code_string_)[
IEEE_80211::kReasonCodeReassociationNotAuthenticated] =
"STA requesting (re)association is not authenticated with responding "
"STA";
(*reason_code_string_)[IEEE_80211::kReasonCodeUnacceptablePowerCapability] =
"Disassociated because the information in the Power Capability "
"element is unacceptable";
(*reason_code_string_)[
IEEE_80211::kReasonCodeUnacceptableSupportedChannelInfo] =
"Disassociated because the information in the Supported Channels "
"element is unacceptable";
(*reason_code_string_)[IEEE_80211::kReasonCodeInvalidInfoElement] =
"Invalid information element, i.e., an information element defined in "
"this standard for which the content does not meet the specifications "
"in Clause 7";
(*reason_code_string_)[IEEE_80211::kReasonCodeMICFailure] =
"Message integrity code (MIC) failure";
(*reason_code_string_)[IEEE_80211::kReasonCode4WayTimeout] =
"4-Way Handshake timeout";
(*reason_code_string_)[IEEE_80211::kReasonCodeGroupKeyHandshakeTimeout] =
"Group Key Handshake timeout";
(*reason_code_string_)[IEEE_80211::kReasonCodeDifferenIE] =
"Information element in 4-Way Handshake different from "
"(Re)Association Request/Probe Response/Beacon frame";
(*reason_code_string_)[IEEE_80211::kReasonCodeGroupCipherInvalid] =
"Invalid group cipher";
(*reason_code_string_)[IEEE_80211::kReasonCodePairwiseCipherInvalid] =
"Invalid pairwise cipher";
(*reason_code_string_)[IEEE_80211::kReasonCodeAkmpInvalid] =
"Invalid AKMP";
(*reason_code_string_)[IEEE_80211::kReasonCodeUnsupportedRsnIeVersion] =
"Unsupported RSN information element version";
(*reason_code_string_)[IEEE_80211::kReasonCodeInvalidRsnIeCaps] =
"Invalid RSN information element capabilities";
(*reason_code_string_)[IEEE_80211::kReasonCode8021XAuth] =
"IEEE 802.1X authentication failed";
(*reason_code_string_)[IEEE_80211::kReasonCodeCipherSuiteRejected] =
"Cipher suite rejected because of the security policy";
(*reason_code_string_)[IEEE_80211::kReasonCodeUnspecifiedQoS] =
"Disassociated for unspecified, QoS-related reason";
(*reason_code_string_)[IEEE_80211::kReasonCodeQoSBandwidth] =
"Disassociated because QoS AP lacks sufficient bandwidth for this "
"QoS STA";
(*reason_code_string_)[IEEE_80211::kReasonCodeiPoorConditions] =
"Disassociated because excessive number of frames need to be "
"acknowledged, but are not acknowledged due to AP transmissions "
"and/or poor channel conditions";
(*reason_code_string_)[IEEE_80211::kReasonCodeOutsideTxop] =
"Disassociated because STA is transmitting outside the limits of its "
"TXOPs";
(*reason_code_string_)[IEEE_80211::kReasonCodeStaLeaving] =
"Requested from peer STA as the STA is leaving the BSS (or resetting)";
(*reason_code_string_)[IEEE_80211::kReasonCodeUnacceptableMechanism] =
"Requested from peer STA as it does not want to use the mechanism";
(*reason_code_string_)[IEEE_80211::kReasonCodeSetupRequired] =
"Requested from peer STA as the STA received frames using the "
"mechanism for which a setup is required";
(*reason_code_string_)[IEEE_80211::kReasonCodeTimeout] =
"Requested from peer STA due to timeout";
(*reason_code_string_)[IEEE_80211::kReasonCodeCipherSuiteNotSupported] =
"Peer STA does not support the requested cipher suite";
(*reason_code_string_)[IEEE_80211::kReasonCodeInvalid] = "<INVALID REASON>";
}
if (!status_code_string_) {
status_code_string_ = new map<uint16_t, string>;
(*status_code_string_)[IEEE_80211::kStatusCodeSuccessful] = "Successful";
(*status_code_string_)[IEEE_80211::kStatusCodeFailure] =
"Unspecified failure";
(*status_code_string_)[IEEE_80211::kStatusCodeAllCapabilitiesNotSupported] =
"Cannot support all requested capabilities in the capability "
"information field";
(*status_code_string_)[IEEE_80211::kStatusCodeCantConfirmAssociation] =
"Reassociation denied due to inability to confirm that association "
"exists";
(*status_code_string_)[IEEE_80211::kStatusCodeAssociationDenied] =
"Association denied due to reason outside the scope of this standard";
(*status_code_string_)[
IEEE_80211::kStatusCodeAuthenticationUnsupported] =
"Responding station does not support the specified authentication "
"algorithm";
(*status_code_string_)[IEEE_80211::kStatusCodeOutOfSequence] =
"Received an authentication frame with authentication transaction "
"sequence number out of expected sequence";
(*status_code_string_)[IEEE_80211::kStatusCodeChallengeFailure] =
"Authentication rejected because of challenge failure";
(*status_code_string_)[IEEE_80211::kStatusCodeFrameTimeout] =
"Authentication rejected due to timeout waiting for next frame in "
"sequence";
(*status_code_string_)[IEEE_80211::kStatusCodeMaxSta] =
"Association denied because AP is unable to handle additional "
"associated STA";
(*status_code_string_)[IEEE_80211::kStatusCodeDataRateUnsupported] =
"Association denied due to requesting station not supporting all of "
"the data rates in the BSSBasicRateSet parameter";
(*status_code_string_)[IEEE_80211::kStatusCodeShortPreambleUnsupported] =
"Association denied due to requesting station not supporting the "
"short preamble option";
(*status_code_string_)[IEEE_80211::kStatusCodePbccUnsupported] =
"Association denied due to requesting station not supporting the PBCC "
"modulation option";
(*status_code_string_)[
IEEE_80211::kStatusCodeChannelAgilityUnsupported] =
"Association denied due to requesting station not supporting the "
"channel agility option";
(*status_code_string_)[IEEE_80211::kStatusCodeNeedSpectrumManagement] =
"Association request rejected because Spectrum Management capability "
"is required";
(*status_code_string_)[
IEEE_80211::kStatusCodeUnacceptablePowerCapability] =
"Association request rejected because the information in the Power "
"Capability element is unacceptable";
(*status_code_string_)[
IEEE_80211::kStatusCodeUnacceptableSupportedChannelInfo] =
"Association request rejected because the information in the "
"Supported Channels element is unacceptable";
(*status_code_string_)[IEEE_80211::kStatusCodeShortTimeSlotRequired] =
"Association request rejected due to requesting station not "
"supporting the Short Slot Time option";
(*status_code_string_)[IEEE_80211::kStatusCodeDssOfdmRequired] =
"Association request rejected due to requesting station not "
"supporting the DSSS-OFDM option";
(*status_code_string_)[IEEE_80211::kStatusCodeQosFailure] =
"Unspecified, QoS related failure";
(*status_code_string_)[
IEEE_80211::kStatusCodeInsufficientBandwithForQsta] =
"Association denied due to QAP having insufficient bandwidth to handle "
"another QSTA";
(*status_code_string_)[IEEE_80211::kStatusCodePoorConditions] =
"Association denied due to poor channel conditions";
(*status_code_string_)[IEEE_80211::kStatusCodeQosNotSupported] =
"Association (with QoS BSS) denied due to requesting station not "
"supporting the QoS facility";
(*status_code_string_)[IEEE_80211::kStatusCodeDeclined] =
"The request has been declined";
(*status_code_string_)[IEEE_80211::kStatusCodeInvalidParameterValues] =
"The request has not been successful as one or more parameters have "
"invalid values";
(*status_code_string_)[IEEE_80211::kStatusCodeCannotBeHonored] =
"The TS has not been created because the request cannot be honored. "
"However, a suggested Tspec is provided so that the initiating QSTA "
"may attempt to send another TS with the suggested changes to the "
"TSpec";
(*status_code_string_)[IEEE_80211::kStatusCodeInvalidInfoElement] =
"Invalid Information Element";
(*status_code_string_)[IEEE_80211::kStatusCodeGroupCipherInvalid] =
"Invalid Group Cipher";
(*status_code_string_)[IEEE_80211::kStatusCodePairwiseCipherInvalid] =
"Invalid Pairwise Cipher";
(*status_code_string_)[IEEE_80211::kStatusCodeAkmpInvalid] = "Invalid AKMP";
(*status_code_string_)[IEEE_80211::kStatusCodeUnsupportedRsnIeVersion] =
"Unsupported RSN Information Element version";
(*status_code_string_)[IEEE_80211::kStatusCodeInvalidRsnIeCaps] =
"Invalid RSN Information Element Capabilities";
(*status_code_string_)[IEEE_80211::kStatusCodeCipherSuiteRejected] =
"Cipher suite is rejected per security policy";
(*status_code_string_)[IEEE_80211::kStatusCodeTsDelayNotMet] =
"The TS has not been created. However, the HC may be capable of "
"creating a TS, in response to a request, after the time indicated in "
"the TS Delay element";
(*status_code_string_)[IEEE_80211::kStatusCodeDirectLinkIllegal] =
"Direct link is not allowed in the BSS by policy";
(*status_code_string_)[IEEE_80211::kStatusCodeStaNotInBss] =
"Destination STA is not present within this BSS";
(*status_code_string_)[IEEE_80211::kStatusCodeStaNotInQsta] =
"The destination STA is not a QoS STA";
(*status_code_string_)[IEEE_80211::kStatusCodeExcessiveListenInterval] =
"Association denied because Listen Interval is too large";
(*status_code_string_)[IEEE_80211::kStatusCodeInvalid] = "<INVALID STATUS>";
}
return true;
}
// Helper function to provide a string for a MAC address.
bool Nl80211Message::GetMacAttributeString(int id, string *value) const {
if (!value) {
LOG(ERROR) << "Null |value| parameter";
return false;
}
ByteString data;
if (!const_attributes()->GetRawAttributeValue(id, &data)) {
value->assign(kBogusMacAddress);
return false;
}
value->assign(StringFromMacAddress(data.GetConstData()));
return true;
}
// Helper function to provide a string for NL80211_ATTR_SCAN_FREQUENCIES.
bool Nl80211Message::GetScanFrequenciesAttribute(
int id, vector<uint32_t> *value) const {
if (!value) {
LOG(ERROR) << "Null |value| parameter";
return false;
}
value->clear();
AttributeListConstRefPtr frequency_list;
if (!const_attributes()->ConstGetNestedAttributeList(
NL80211_ATTR_SCAN_FREQUENCIES, &frequency_list) || !frequency_list) {
LOG(ERROR) << "Couldn't get NL80211_ATTR_SCAN_FREQUENCIES attribute";
return false;
}
AttributeIdIterator freq_iter(*frequency_list);
for (; !freq_iter.AtEnd(); freq_iter.Advance()) {
uint32_t freq = 0;
if (frequency_list->GetU32AttributeValue(freq_iter.GetId(), &freq)) {
value->push_back(freq);
}
}
return true;
}
// Helper function to provide a string for NL80211_ATTR_SCAN_SSIDS.
bool Nl80211Message::GetScanSsidsAttribute(
int id, vector<string> *value) const {
if (!value) {
LOG(ERROR) << "Null |value| parameter";
return false;
}
AttributeListConstRefPtr ssid_list;
if (!const_attributes()->ConstGetNestedAttributeList(
NL80211_ATTR_SCAN_SSIDS, &ssid_list) || !ssid_list) {
LOG(ERROR) << "Couldn't get NL80211_ATTR_SCAN_SSIDS attribute";
return false;
}
AttributeIdIterator ssid_iter(*ssid_list);
for (; !ssid_iter.AtEnd(); ssid_iter.Advance()) {
string ssid;
if (ssid_list->GetStringAttributeValue(ssid_iter.GetId(), &ssid)) {
value->push_back(ssid);
}
}
return true;
}
// static
string Nl80211Message::StringFromMacAddress(const uint8_t *arg) {
string output;
if (!arg) {
output = kBogusMacAddress;
LOG(ERROR) << "|arg| parameter is NULL.";
} else {
StringAppendF(&output, "%02x", arg[0]);
for (unsigned int i = 1; i < kEthernetAddressBytes ; ++i) {
StringAppendF(&output, ":%02x", arg[i]);
}
}
return output;
}
// static
string Nl80211Message::StringFromReason(uint16_t status) {
map<uint16_t, string>::const_iterator match;
match = reason_code_string_->find(status);
if (match == reason_code_string_->end()) {
string output;
if (status < IEEE_80211::kReasonCodeMax) {
StringAppendF(&output, "<Reserved Reason:%u>", status);
} else {
StringAppendF(&output, "<Unknown Reason:%u>", status);
}
return output;
}
return match->second;
}
// static
string Nl80211Message::StringFromStatus(uint16_t status) {
map<uint16_t, string>::const_iterator match;
match = status_code_string_->find(status);
if (match == status_code_string_->end()) {
string output;
if (status < IEEE_80211::kStatusCodeMax) {
StringAppendF(&output, "<Reserved Status:%u>", status);
} else {
StringAppendF(&output, "<Unknown Status:%u>", status);
}
return output;
}
return match->second;
}
// Nl80211Frame
Nl80211Frame::Nl80211Frame(const ByteString &raw_frame)
: frame_type_(kIllegalFrameType),
reason_(std::numeric_limits<uint16_t>::max()),
status_(std::numeric_limits<uint16_t>::max()),
frame_(raw_frame) {
const IEEE_80211::ieee80211_frame *frame =
reinterpret_cast<const IEEE_80211::ieee80211_frame *>(
frame_.GetConstData());
// Now, let's populate the other stuff.
if (frame_.GetLength() >= kMinimumFrameByteCount) {
mac_from_ =
Nl80211Message::StringFromMacAddress(&frame->destination_mac[0]);
mac_to_ = Nl80211Message::StringFromMacAddress(&frame->source_mac[0]);
frame_type_ = frame->frame_control & kFrameTypeMask;
switch (frame_type_) {
case kAssocResponseFrameType:
case kReassocResponseFrameType:
status_ = le16toh(frame->u.associate_response.status_code);
break;
case kAuthFrameType:
status_ = le16toh(frame->u.authentiate_message.status_code);
break;
case kDisassocFrameType:
case kDeauthFrameType:
reason_ = le16toh(frame->u.deauthentiate_message.reason_code);
break;
default:
break;
}
}
}
bool Nl80211Frame::ToString(string *output) const {
if (!output) {
LOG(ERROR) << "NULL |output|";
return false;
}
if (frame_.IsEmpty()) {
output->append(" [no frame]");
return true;
}
if (frame_.GetLength() < kMinimumFrameByteCount) {
output->append(" [invalid frame: ");
} else {
StringAppendF(output, " %s -> %s", mac_from_.c_str(), mac_to_.c_str());
switch (frame_.GetConstData()[0] & kFrameTypeMask) {
case kAssocResponseFrameType:
StringAppendF(output, "; AssocResponse status: %u: %s",
status_,
Nl80211Message::StringFromStatus(status_).c_str());
break;
case kReassocResponseFrameType:
StringAppendF(output, "; ReassocResponse status: %u: %s",
status_,
Nl80211Message::StringFromStatus(status_).c_str());
break;
case kAuthFrameType:
StringAppendF(output, "; Auth status: %u: %s",
status_,
Nl80211Message::StringFromStatus(status_).c_str());
break;
case kDisassocFrameType:
StringAppendF(output, "; Disassoc reason %u: %s",
reason_,
Nl80211Message::StringFromReason(reason_).c_str());
break;
case kDeauthFrameType:
StringAppendF(output, "; Deauth reason %u: %s",
reason_,
Nl80211Message::StringFromReason(reason_).c_str());
break;
default:
break;
}
output->append(" [frame: ");
}
const unsigned char *frame = frame_.GetConstData();
for (size_t i = 0; i < frame_.GetLength(); ++i) {
StringAppendF(output, "%02x, ", frame[i]);
}
output->append("]");
return true;
}
bool Nl80211Frame::IsEqual(const Nl80211Frame &other) const {
return frame_.Equals(other.frame_);
}
//
// Specific Nl80211Message types.
//
const uint8_t AssociateMessage::kCommand = NL80211_CMD_ASSOCIATE;
const char AssociateMessage::kCommandString[] = "NL80211_CMD_ASSOCIATE";
const uint8_t AuthenticateMessage::kCommand = NL80211_CMD_AUTHENTICATE;
const char AuthenticateMessage::kCommandString[] = "NL80211_CMD_AUTHENTICATE";
const uint8_t CancelRemainOnChannelMessage::kCommand =
NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL;
const char CancelRemainOnChannelMessage::kCommandString[] =
"NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL";
const uint8_t ConnectMessage::kCommand = NL80211_CMD_CONNECT;
const char ConnectMessage::kCommandString[] = "NL80211_CMD_CONNECT";
const uint8_t DeauthenticateMessage::kCommand = NL80211_CMD_DEAUTHENTICATE;
const char DeauthenticateMessage::kCommandString[] =
"NL80211_CMD_DEAUTHENTICATE";
const uint8_t DeleteStationMessage::kCommand = NL80211_CMD_DEL_STATION;
const char DeleteStationMessage::kCommandString[] = "NL80211_CMD_DEL_STATION";
const uint8_t DisassociateMessage::kCommand = NL80211_CMD_DISASSOCIATE;
const char DisassociateMessage::kCommandString[] = "NL80211_CMD_DISASSOCIATE";
const uint8_t DisconnectMessage::kCommand = NL80211_CMD_DISCONNECT;
const char DisconnectMessage::kCommandString[] = "NL80211_CMD_DISCONNECT";
const uint8_t FrameTxStatusMessage::kCommand = NL80211_CMD_FRAME_TX_STATUS;
const char FrameTxStatusMessage::kCommandString[] =
"NL80211_CMD_FRAME_TX_STATUS";
const uint8_t GetRegMessage::kCommand = NL80211_CMD_GET_REG;
const char GetRegMessage::kCommandString[] = "NL80211_CMD_GET_REG";
const uint8_t GetWiphyMessage::kCommand = NL80211_CMD_GET_WIPHY;
const char GetWiphyMessage::kCommandString[] = "NL80211_CMD_GET_WIPHY";
GetWiphyMessage::GetWiphyMessage() : Nl80211Message(kCommand, kCommandString) {
attributes()->CreateAttribute(
NL80211_ATTR_IFINDEX, Bind(&NetlinkAttribute::NewNl80211AttributeFromId));
}
const uint8_t JoinIbssMessage::kCommand = NL80211_CMD_JOIN_IBSS;
const char JoinIbssMessage::kCommandString[] = "NL80211_CMD_JOIN_IBSS";
const uint8_t MichaelMicFailureMessage::kCommand =
NL80211_CMD_MICHAEL_MIC_FAILURE;
const char MichaelMicFailureMessage::kCommandString[] =
"NL80211_CMD_MICHAEL_MIC_FAILURE";
const uint8_t NewScanResultsMessage::kCommand = NL80211_CMD_NEW_SCAN_RESULTS;
const char NewScanResultsMessage::kCommandString[] =
"NL80211_CMD_NEW_SCAN_RESULTS";
const uint8_t NewStationMessage::kCommand = NL80211_CMD_NEW_STATION;
const char NewStationMessage::kCommandString[] = "NL80211_CMD_NEW_STATION";
const uint8_t NewWiphyMessage::kCommand = NL80211_CMD_NEW_WIPHY;
const char NewWiphyMessage::kCommandString[] = "NL80211_CMD_NEW_WIPHY";
const uint8_t NotifyCqmMessage::kCommand = NL80211_CMD_NOTIFY_CQM;
const char NotifyCqmMessage::kCommandString[] = "NL80211_CMD_NOTIFY_CQM";
const uint8_t PmksaCandidateMessage::kCommand = NL80211_ATTR_PMKSA_CANDIDATE;
const char PmksaCandidateMessage::kCommandString[] =
"NL80211_ATTR_PMKSA_CANDIDATE";
const uint8_t RegBeaconHintMessage::kCommand = NL80211_CMD_REG_BEACON_HINT;
const char RegBeaconHintMessage::kCommandString[] =
"NL80211_CMD_REG_BEACON_HINT";
const uint8_t RegChangeMessage::kCommand = NL80211_CMD_REG_CHANGE;
const char RegChangeMessage::kCommandString[] = "NL80211_CMD_REG_CHANGE";
const uint8_t RemainOnChannelMessage::kCommand = NL80211_CMD_REMAIN_ON_CHANNEL;
const char RemainOnChannelMessage::kCommandString[] =
"NL80211_CMD_REMAIN_ON_CHANNEL";
const uint8_t RoamMessage::kCommand = NL80211_CMD_ROAM;
const char RoamMessage::kCommandString[] = "NL80211_CMD_ROAM";
const uint8_t ScanAbortedMessage::kCommand = NL80211_CMD_SCAN_ABORTED;
const char ScanAbortedMessage::kCommandString[] = "NL80211_CMD_SCAN_ABORTED";
const uint8_t GetScanMessage::kCommand = NL80211_CMD_GET_SCAN;
const char GetScanMessage::kCommandString[] = "NL80211_CMD_GET_SCAN";
const uint8_t TriggerScanMessage::kCommand = NL80211_CMD_TRIGGER_SCAN;
const char TriggerScanMessage::kCommandString[] = "NL80211_CMD_TRIGGER_SCAN";
TriggerScanMessage::TriggerScanMessage()
: Nl80211Message(kCommand, kCommandString) {
attributes()->CreateAttribute(
NL80211_ATTR_IFINDEX, Bind(&NetlinkAttribute::NewNl80211AttributeFromId));
attributes()->CreateAttribute(
NL80211_ATTR_SCAN_FREQUENCIES,
Bind(&NetlinkAttribute::NewNl80211AttributeFromId));
attributes()->CreateAttribute(
NL80211_ATTR_SCAN_SSIDS,
Bind(&NetlinkAttribute::NewNl80211AttributeFromId));
}
const uint8_t UnprotDeauthenticateMessage::kCommand =
NL80211_CMD_UNPROT_DEAUTHENTICATE;
const char UnprotDeauthenticateMessage::kCommandString[] =
"NL80211_CMD_UNPROT_DEAUTHENTICATE";
const uint8_t UnprotDisassociateMessage::kCommand =
NL80211_CMD_UNPROT_DISASSOCIATE;
const char UnprotDisassociateMessage::kCommandString[] =
"NL80211_CMD_UNPROT_DISASSOCIATE";
GetInterfaceMessage::GetInterfaceMessage()
: Nl80211Message(kCommand, kCommandString) {
attributes()->CreateAttribute(
NL80211_ATTR_IFINDEX, Bind(&NetlinkAttribute::NewNl80211AttributeFromId));
}
const uint8_t GetInterfaceMessage::kCommand = NL80211_CMD_GET_INTERFACE;
const char GetInterfaceMessage::kCommandString[] = "NL80211_CMD_GET_INTERFACE";
const uint8_t NewInterfaceMessage::kCommand = NL80211_CMD_NEW_INTERFACE;
const char NewInterfaceMessage::kCommandString[] = "NL80211_CMD_NEW_INTERFACE";
// static
NetlinkMessage *Nl80211Message::CreateMessage(const nlmsghdr *const_msg) {
if (!const_msg) {
LOG(ERROR) << "NULL |const_msg| parameter";
return NULL;
}
// Casting away constness since, while nlmsg_data doesn't change its
// parameter, it also doesn't declare its paramenter as const.
nlmsghdr *msg = const_cast<nlmsghdr *>(const_msg);
void *payload = nlmsg_data(msg);
genlmsghdr *gnlh = reinterpret_cast<genlmsghdr *>(payload);
scoped_ptr<NetlinkMessage> message;
switch (gnlh->cmd) {
case AssociateMessage::kCommand:
return new AssociateMessage();
case AuthenticateMessage::kCommand:
return new AuthenticateMessage();
case CancelRemainOnChannelMessage::kCommand:
return new CancelRemainOnChannelMessage();
case ConnectMessage::kCommand:
return new ConnectMessage();
case DeauthenticateMessage::kCommand:
return new DeauthenticateMessage();
case DeleteStationMessage::kCommand:
return new DeleteStationMessage();
case DisassociateMessage::kCommand:
return new DisassociateMessage();
case DisconnectMessage::kCommand:
return new DisconnectMessage();
case FrameTxStatusMessage::kCommand:
return new FrameTxStatusMessage();
case GetInterfaceMessage::kCommand:
return new GetInterfaceMessage();
case GetRegMessage::kCommand:
return new GetRegMessage();
case GetWiphyMessage::kCommand:
return new GetWiphyMessage();
case JoinIbssMessage::kCommand:
return new JoinIbssMessage();
case MichaelMicFailureMessage::kCommand:
return new MichaelMicFailureMessage();
case NewInterfaceMessage::kCommand:
return new NewInterfaceMessage();
case NewScanResultsMessage::kCommand:
return new NewScanResultsMessage();
case NewStationMessage::kCommand:
return new NewStationMessage();
case NewWiphyMessage::kCommand:
return new NewWiphyMessage();
case NotifyCqmMessage::kCommand:
return new NotifyCqmMessage();
case PmksaCandidateMessage::kCommand:
return new PmksaCandidateMessage();
case RegBeaconHintMessage::kCommand:
return new RegBeaconHintMessage();
case RegChangeMessage::kCommand:
return new RegChangeMessage();
case RemainOnChannelMessage::kCommand:
return new RemainOnChannelMessage();
case RoamMessage::kCommand:
return new RoamMessage();
case ScanAbortedMessage::kCommand:
return new ScanAbortedMessage();
case TriggerScanMessage::kCommand:
return new TriggerScanMessage();
case UnprotDeauthenticateMessage::kCommand:
return new UnprotDeauthenticateMessage();
case UnprotDisassociateMessage::kCommand:
return new UnprotDisassociateMessage();
default:
LOG(WARNING) << StringPrintf(
"Unknown/unhandled netlink nl80211 message 0x%02x", gnlh->cmd);
return new UnknownNl80211Message(gnlh->cmd);
break;
}
return NULL;
}
//
// Data Collector
//
Nl80211MessageDataCollector *
Nl80211MessageDataCollector::GetInstance() {
return g_datacollector.Pointer();
}
Nl80211MessageDataCollector::Nl80211MessageDataCollector() {
need_to_print[NL80211_ATTR_PMKSA_CANDIDATE] = true;
need_to_print[NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL] = true;
need_to_print[NL80211_CMD_DEL_STATION] = true;
need_to_print[NL80211_CMD_FRAME_TX_STATUS] = true;
need_to_print[NL80211_CMD_JOIN_IBSS] = true;
need_to_print[NL80211_CMD_MICHAEL_MIC_FAILURE] = true;
need_to_print[NL80211_CMD_NEW_WIPHY] = true;
need_to_print[NL80211_CMD_REG_BEACON_HINT] = true;
need_to_print[NL80211_CMD_REG_CHANGE] = true;
need_to_print[NL80211_CMD_REMAIN_ON_CHANNEL] = true;
need_to_print[NL80211_CMD_ROAM] = true;
need_to_print[NL80211_CMD_SCAN_ABORTED] = true;
need_to_print[NL80211_CMD_UNPROT_DEAUTHENTICATE] = true;
need_to_print[NL80211_CMD_UNPROT_DISASSOCIATE] = true;
}
void Nl80211MessageDataCollector::CollectDebugData(
const Nl80211Message &message, nlmsghdr *msg) {
if (!msg) {
LOG(ERROR) << "NULL |msg| parameter";
return;
}
bool doit = false;
map<uint8_t, bool>::const_iterator node;
node = need_to_print.find(message.command());
if (node != need_to_print.end())
doit = node->second;
if (doit) {
LOG(INFO) << "@@const unsigned char "
<< "k" << message.command_string()
<< "[] = {";
int payload_bytes = nlmsg_datalen(msg);
size_t bytes = nlmsg_total_size(payload_bytes);
unsigned char *rawdata = reinterpret_cast<unsigned char *>(msg);
for (size_t i = 0; i < bytes; ++i) {
LOG(INFO) << " 0x"
<< std::hex << std::setfill('0') << std::setw(2)
<< + rawdata[i] << ",";
}
LOG(INFO) << "};";
need_to_print[message.command()] = false;
}
}
} // namespace shill.