| // 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. |
| |
| #ifndef SHILL_USER_BOUND_NLMESSAGE_H_ |
| #define SHILL_USER_BOUND_NLMESSAGE_H_ |
| |
| #include <linux/nl80211.h> |
| |
| #include <iomanip> |
| #include <map> |
| #include <string> |
| #include <vector> |
| |
| #include <base/basictypes.h> |
| #include <base/bind.h> |
| #include <base/lazy_instance.h> |
| #include <gtest/gtest.h> |
| |
| #include "shill/attribute_list.h" |
| #include "shill/byte_string.h" |
| |
| struct nlattr; |
| struct nlmsghdr; |
| |
| namespace shill { |
| |
| // Class for messages received from libnl. |
| class UserBoundNlMessage { |
| public: |
| static const unsigned int kEthernetAddressBytes; |
| static const char kBogusMacAddress[]; |
| |
| UserBoundNlMessage(uint8 message_type, const char *message_type_string) |
| : message_(NULL), |
| message_type_(message_type), |
| message_type_string_(message_type_string) {} |
| virtual ~UserBoundNlMessage() {} |
| |
| // Non-trivial initialization. |
| virtual bool Init(nlattr *tb[NL80211_ATTR_MAX + 1], nlmsghdr *msg); |
| |
| // Message ID is equivalent to the message's sequence number. |
| uint32_t GetId() const; |
| |
| const AttributeList &attributes() const { return attributes_; } |
| |
| // TODO(wdg): This needs to be moved to AttributeMac. |
| // Helper function to provide a string for a MAC address. If no attribute |
| // is found, this method returns 'false'. On any error with a non-NULL |
| // |value|, this method sets |value| to a bogus MAC address. |
| bool GetMacAttributeString(nl80211_attrs id, std::string *value) const; |
| |
| // TODO(wdg): This needs to be moved to AttributeScanFrequencies. |
| // Helper function to provide a vector of scan frequencies for attributes |
| // that contain them (such as NL80211_ATTR_SCAN_FREQUENCIES). |
| bool GetScanFrequenciesAttribute(nl80211_attrs id, |
| std::vector<uint32_t> *value) const; |
| |
| // TODO(wdg): This needs to be moved to AttributeScanSSids. |
| // Helper function to provide a vector of SSIDs for attributes that contain |
| // them (such as NL80211_ATTR_SCAN_SSIDS). |
| bool GetScanSsidsAttribute(nl80211_attrs id, |
| std::vector<std::string> *value) const; |
| |
| // TODO(wdg): This needs to be moved to AttributeMac. |
| // Stringizes the MAC address found in 'arg'. If there are problems (such |
| // as a NULL |arg|), |value| is set to a bogus MAC address. |
| static std::string StringFromMacAddress(const uint8_t *arg); |
| |
| // Returns a string representing the passed-in |status| or |reason|, the |
| // value of which has been acquired from libnl (for example, from the |
| // NL80211_ATTR_STATUS_CODE or NL80211_ATTR_REASON_CODE attribute). |
| static std::string StringFromReason(uint16_t reason); |
| static std::string StringFromStatus(uint16_t status); |
| |
| std::string GenericToString() const; |
| |
| // Returns a string that describes this message. |
| virtual std::string ToString() const { return GetHeaderString(); } |
| |
| uint8 message_type() const { return message_type_; } |
| const char *message_type_string() const { return message_type_string_; } |
| |
| protected: |
| // Returns a string that should precede all user-bound message strings. |
| virtual std::string GetHeaderString() const; |
| |
| // Returns a string that describes the contents of the frame pointed to by |
| // 'attr'. |
| std::string StringFromFrame(nl80211_attrs attr_name) const; |
| |
| // Converts key_type to a string. |
| static std::string StringFromKeyType(nl80211_key_type key_type); |
| |
| // Returns a string representation of the REG initiator described by the |
| // method's parameter. |
| static std::string StringFromRegInitiator(__u8 initiator); |
| |
| // Returns a string based on the SSID found in 'data'. Non-printable |
| // characters are string-ized. |
| static std::string StringFromSsid(const uint8_t len, const uint8_t *data); |
| |
| private: |
| friend class Config80211Test; |
| FRIEND_TEST(Config80211Test, NL80211_CMD_NOTIFY_CQM); |
| |
| static const uint32_t kIllegalMessage; |
| |
| nlmsghdr *message_; |
| const uint8 message_type_; |
| const char *message_type_string_; |
| static std::map<uint16_t, std::string> *reason_code_string_; |
| static std::map<uint16_t, std::string> *status_code_string_; |
| |
| AttributeList attributes_; |
| |
| DISALLOW_COPY_AND_ASSIGN(UserBoundNlMessage); |
| }; |
| |
| class Nl80211Frame { |
| public: |
| enum Type { |
| kAssocResponseFrameType = 0x10, |
| kReassocResponseFrameType = 0x30, |
| kAssocRequestFrameType = 0x00, |
| kReassocRequestFrameType = 0x20, |
| kAuthFrameType = 0xb0, |
| kDisassocFrameType = 0xa0, |
| kDeauthFrameType = 0xc0, |
| kIllegalFrameType = 0xff |
| }; |
| |
| explicit Nl80211Frame(const ByteString &init); |
| bool ToString(std::string *output) const; |
| bool IsEqual(const Nl80211Frame &other) const; |
| uint16_t reason() const { return reason_; } |
| uint16_t status() const { return status_; } |
| |
| private: |
| static const uint8_t kMinimumFrameByteCount; |
| static const uint8_t kFrameTypeMask; |
| |
| std::string mac_from_; |
| std::string mac_to_; |
| uint8_t frame_type_; |
| uint16_t reason_; |
| uint16_t status_; |
| ByteString frame_; |
| |
| DISALLOW_COPY_AND_ASSIGN(Nl80211Frame); |
| }; |
| |
| // |
| // Specific UserBoundNlMessage types. |
| // |
| |
| class AssociateMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| AssociateMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(AssociateMessage); |
| }; |
| |
| |
| class AuthenticateMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| AuthenticateMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(AuthenticateMessage); |
| }; |
| |
| |
| class CancelRemainOnChannelMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| CancelRemainOnChannelMessage() |
| : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(CancelRemainOnChannelMessage); |
| }; |
| |
| |
| class ConnectMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| ConnectMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(ConnectMessage); |
| }; |
| |
| |
| class DeauthenticateMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| DeauthenticateMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(DeauthenticateMessage); |
| }; |
| |
| |
| class DeleteStationMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| DeleteStationMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(DeleteStationMessage); |
| }; |
| |
| |
| class DisassociateMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| DisassociateMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(DisassociateMessage); |
| }; |
| |
| |
| class DisconnectMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| DisconnectMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(DisconnectMessage); |
| }; |
| |
| |
| class FrameTxStatusMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| FrameTxStatusMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(FrameTxStatusMessage); |
| }; |
| |
| |
| class JoinIbssMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| JoinIbssMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(JoinIbssMessage); |
| }; |
| |
| |
| class MichaelMicFailureMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| MichaelMicFailureMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(MichaelMicFailureMessage); |
| }; |
| |
| |
| class NewScanResultsMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| NewScanResultsMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(NewScanResultsMessage); |
| }; |
| |
| |
| class NewStationMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| NewStationMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(NewStationMessage); |
| }; |
| |
| |
| class NewWifiMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| NewWifiMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(NewWifiMessage); |
| }; |
| |
| |
| class NotifyCqmMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| NotifyCqmMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(NotifyCqmMessage); |
| }; |
| |
| |
| class PmksaCandidateMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| PmksaCandidateMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(PmksaCandidateMessage); |
| }; |
| |
| |
| class RegBeaconHintMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| RegBeaconHintMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| struct ieee80211_beacon_channel { |
| __u16 center_freq; |
| bool passive_scan; |
| bool no_ibss; |
| }; |
| |
| // Returns the channel ID calculated from the 802.11 frequency. |
| static int ChannelFromIeee80211Frequency(int freq); |
| |
| // Sets values in |chan| based on attributes in |tb|, the array of pointers |
| // to netlink attributes, indexed by attribute type. |
| int ParseBeaconHintChan(const nlattr *tb, |
| ieee80211_beacon_channel *chan) const; |
| |
| DISALLOW_COPY_AND_ASSIGN(RegBeaconHintMessage); |
| }; |
| |
| |
| class RegChangeMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| RegChangeMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(RegChangeMessage); |
| }; |
| |
| |
| class RemainOnChannelMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| RemainOnChannelMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(RemainOnChannelMessage); |
| }; |
| |
| |
| class RoamMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| RoamMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(RoamMessage); |
| }; |
| |
| |
| class ScanAbortedMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| ScanAbortedMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(ScanAbortedMessage); |
| }; |
| |
| |
| class TriggerScanMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| TriggerScanMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(TriggerScanMessage); |
| }; |
| |
| |
| class UnknownMessage : public UserBoundNlMessage { |
| public: |
| explicit UnknownMessage(uint8_t command) |
| : UserBoundNlMessage(command, kCommandString), |
| command_(command) {} |
| |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| virtual std::string ToString() const; |
| |
| private: |
| uint8_t command_; |
| |
| DISALLOW_COPY_AND_ASSIGN(UnknownMessage); |
| }; |
| |
| |
| class UnprotDeauthenticateMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| UnprotDeauthenticateMessage() |
| : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(UnprotDeauthenticateMessage); |
| }; |
| |
| |
| class UnprotDisassociateMessage : public UserBoundNlMessage { |
| public: |
| static const uint8_t kCommand; |
| static const char kCommandString[]; |
| |
| UnprotDisassociateMessage() : UserBoundNlMessage(kCommand, kCommandString) {} |
| |
| virtual std::string ToString() const; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(UnprotDisassociateMessage); |
| }; |
| |
| |
| // |
| // Factory class. |
| // |
| |
| class UserBoundNlMessageFactory { |
| public: |
| // Ownership of the message is passed to the caller and, as such, he should |
| // delete it. |
| static UserBoundNlMessage *CreateMessage(nlmsghdr *msg); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(UserBoundNlMessageFactory); |
| }; |
| |
| |
| // UserBoundNlMessageDataCollector - this class is used to collect data to be |
| // used for unit tests. It is only invoked in this case. |
| |
| class UserBoundNlMessageDataCollector { |
| public: |
| // This is a singleton -- use Config80211::GetInstance()->Foo() |
| static UserBoundNlMessageDataCollector *GetInstance(); |
| |
| void CollectDebugData(const UserBoundNlMessage &message, nlmsghdr *msg); |
| |
| protected: |
| friend struct |
| base::DefaultLazyInstanceTraits<UserBoundNlMessageDataCollector>; |
| |
| explicit UserBoundNlMessageDataCollector(); |
| |
| private: |
| // In order to limit the output from this class, I keep track of types I |
| // haven't yet printed. |
| std::map<uint8_t, bool> need_to_print; |
| }; |
| |
| } // namespace shill |
| |
| #endif // SHILL_USER_BOUND_NLMESSAGE_H_ |