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-rw-r--r--include/device_proto.h302
1 files changed, 142 insertions, 160 deletions
diff --git a/include/device_proto.h b/include/device_proto.h
index c8f1ff2..142b45b 100644
--- a/include/device_proto.h
+++ b/include/device_proto.h
@@ -23,10 +23,10 @@
#define PWS_PASSWORD_LENGTH 20
#define PWS_LOGINNAME_LENGTH 32
-#define PWS_SEND_PASSWORD 0
-#define PWS_SEND_LOGINNAME 1
-#define PWS_SEND_TAB 2
-#define PWS_SEND_CR 3
+#define PWS_SEND_PASSWORD 0
+#define PWS_SEND_LOGINNAME 1
+#define PWS_SEND_TAB 2
+#define PWS_SEND_CR 3
namespace nitrokey {
namespace proto {
@@ -42,46 +42,42 @@ namespace proto {
*/
template <CommandID cmd_id, typename Payload>
struct HIDReport {
- uint8_t _zero;
- CommandID command_id; // uint8_t
- union {
- uint8_t _padding[HID_REPORT_SIZE - 6];
- Payload payload;
- } __packed;
- uint32_t crc;
-
- // POD types can't have non-default constructors
- // used in Transaction<>::run()
- void initialize() {
- bzero(this, sizeof *this);
- command_id = cmd_id;
- }
-
- uint32_t calculate_CRC() const {
- // w/o leading zero, a part of each HID packet
- // w/o 4-byte crc
- return misc::stm_crc32((const uint8_t *)(this) + 1,
- (size_t)(HID_REPORT_SIZE - 5));
- }
-
- void update_CRC() {
- crc = calculate_CRC();
- }
-
- bool isCRCcorrect() const {
- return crc == calculate_CRC();
- }
-
- bool isValid() const {
- return true;
-// return !_zero && payload.isValid() && isCRCcorrect();
- }
-
- operator std::string() const {
- // Packet type is known upfront in normal operation.
- // Can't be used to dissect random packets.
- return QueryDissector<cmd_id, decltype(*this)>::dissect(*this);
- }
+ uint8_t _zero;
+ CommandID command_id; // uint8_t
+ union {
+ uint8_t _padding[HID_REPORT_SIZE - 6];
+ Payload payload;
+ } __packed;
+ uint32_t crc;
+
+ // POD types can't have non-default constructors
+ // used in Transaction<>::run()
+ void initialize() {
+ bzero(this, sizeof *this);
+ command_id = cmd_id;
+ }
+
+ uint32_t calculate_CRC() const {
+ // w/o leading zero, a part of each HID packet
+ // w/o 4-byte crc
+ return misc::stm_crc32((const uint8_t *)(this) + 1,
+ (size_t)(HID_REPORT_SIZE - 5));
+ }
+
+ void update_CRC() { crc = calculate_CRC(); }
+
+ bool isCRCcorrect() const { return crc == calculate_CRC(); }
+
+ bool isValid() const {
+ return true;
+ // return !_zero && payload.isValid() && isCRCcorrect();
+ }
+
+ operator std::string() const {
+ // Packet type is known upfront in normal operation.
+ // Can't be used to dissect random packets.
+ return QueryDissector<cmd_id, decltype(*this)>::dissect(*this);
+ }
} __packed;
/*
@@ -92,131 +88,117 @@ struct HIDReport {
*/
template <CommandID cmd_id, typename ResponsePayload>
struct DeviceResponse {
- uint8_t _zero;
- uint8_t device_status;
- uint8_t command_id; // originally last_command_type
- uint32_t last_command_crc;
- uint8_t last_command_status;
- union {
- uint8_t _padding[HID_REPORT_SIZE - 12];
- ResponsePayload payload;
- } __packed;
- uint32_t crc;
-
- void initialize() {
- bzero(this, sizeof *this);
- }
-
- uint32_t calculate_CRC() const {
- // w/o leading zero, a part of each HID packet
- // w/o 4-byte crc
- return misc::stm_crc32((const uint8_t *)(this) + 1,
- (size_t)(HID_REPORT_SIZE - 5));
- }
-
- void update_CRC() {
- crc = calculate_CRC();
- }
-
- bool isCRCcorrect() const {
- return crc == calculate_CRC();
- }
-
- bool isValid() const {
-// return !_zero && payload.isValid() && isCRCcorrect() &&
-// command_id == (uint8_t)(cmd_id);
- return true;
- }
-
- operator std::string() const {
- return ResponseDissector<cmd_id, decltype(*this)>::dissect(*this);
- }
+ uint8_t _zero;
+ uint8_t device_status;
+ uint8_t command_id; // originally last_command_type
+ uint32_t last_command_crc;
+ uint8_t last_command_status;
+ union {
+ uint8_t _padding[HID_REPORT_SIZE - 12];
+ ResponsePayload payload;
+ } __packed;
+ uint32_t crc;
+
+ void initialize() { bzero(this, sizeof *this); }
+
+ uint32_t calculate_CRC() const {
+ // w/o leading zero, a part of each HID packet
+ // w/o 4-byte crc
+ return misc::stm_crc32((const uint8_t *)(this) + 1,
+ (size_t)(HID_REPORT_SIZE - 5));
+ }
+
+ void update_CRC() { crc = calculate_CRC(); }
+
+ bool isCRCcorrect() const { return crc == calculate_CRC(); }
+
+ bool isValid() const {
+ // return !_zero && payload.isValid() && isCRCcorrect() &&
+ // command_id == (uint8_t)(cmd_id);
+ return true;
+ }
+
+ operator std::string() const {
+ return ResponseDissector<cmd_id, decltype(*this)>::dissect(*this);
+ }
} __packed;
struct EmptyPayload {
- uint8_t _data[];
+ uint8_t _data[];
- bool isValid() const {
- return true;
- }
+ bool isValid() const { return true; }
- std::string dissect() const {
- return std::string("Empty Payload.");
- }
+ std::string dissect() const { return std::string("Empty Payload."); }
} __packed;
-template<CommandID cmd_id, typename command_payload,
- typename response_payload>
+template <CommandID cmd_id, typename command_payload, typename response_payload>
class Transaction : semantics::non_constructible {
-public:
- // Types declared in command class scope can't be reached from there.
- typedef command_payload CommandPayload;
- typedef response_payload ResponsePayload;
-
- typedef struct HIDReport<cmd_id, CommandPayload> OutgoingPacket;
- typedef struct DeviceResponse<cmd_id, ResponsePayload> ResponsePacket;
-
- static_assert(std::is_pod<OutgoingPacket>::value,
- "outgoingpacket must be a pod type");
- static_assert(std::is_pod<ResponsePacket>::value,
- "ResponsePacket must be a POD type");
- static_assert(sizeof(OutgoingPacket) == HID_REPORT_SIZE,
- "OutgoingPacket type is not the right size");
- static_assert(sizeof(ResponsePacket) == HID_REPORT_SIZE,
- "ResponsePacket type is not the right size");
-
- static response_payload run(device::Device &dev,
- const command_payload &payload) {
- using namespace ::nitrokey::device;
- using namespace ::nitrokey::log;
-
- Log::instance()(__PRETTY_FUNCTION__, Loglevel::DEBUG_L2);
-
- CommError status;
- OutgoingPacket outp;
- ResponsePacket resp;
-
- // POD types can't have non-default constructors
- outp.initialize();
- resp.initialize();
-
- outp.payload = payload;
- outp.update_CRC();
-
- Log::instance()("Outgoing HID packet:", Loglevel::DEBUG);
- Log::instance()((std::string)(outp), Loglevel::DEBUG);
-
- if (!outp.isValid())
- throw std::runtime_error("Invalid outgoing packet");
-
- status = dev.send(&outp);
- if ((int)(status) < 0 && status != CommError::ERR_NO_ERROR)
- throw std::runtime_error(
- std::string("Device error while sending command ") +
- std::to_string((int)(status)));
-
- status = dev.recv(&resp);
- if ((int)(status) < 0 && status != CommError::ERR_NO_ERROR)
- throw std::runtime_error(
- std::string("Device error while executing command ") +
- std::to_string((int)(status)));
-
- Log::instance()("Incoming HID packet:", Loglevel::DEBUG);
- Log::instance()((std::string)(resp), Loglevel::DEBUG);
-
- if (!resp.isValid())
- throw std::runtime_error("Invalid incoming packet");
-
- // See: DeviceResponse
- return resp.payload;
- }
-
- static response_payload run(device::Device &dev) {
- command_payload empty_payload;
- return run(dev, empty_payload);
- }
+ public:
+ // Types declared in command class scope can't be reached from there.
+ typedef command_payload CommandPayload;
+ typedef response_payload ResponsePayload;
+
+ typedef struct HIDReport<cmd_id, CommandPayload> OutgoingPacket;
+ typedef struct DeviceResponse<cmd_id, ResponsePayload> ResponsePacket;
+
+ static_assert(std::is_pod<OutgoingPacket>::value,
+ "outgoingpacket must be a pod type");
+ static_assert(std::is_pod<ResponsePacket>::value,
+ "ResponsePacket must be a POD type");
+ static_assert(sizeof(OutgoingPacket) == HID_REPORT_SIZE,
+ "OutgoingPacket type is not the right size");
+ static_assert(sizeof(ResponsePacket) == HID_REPORT_SIZE,
+ "ResponsePacket type is not the right size");
+
+ static response_payload run(device::Device &dev,
+ const command_payload &payload) {
+ using namespace ::nitrokey::device;
+ using namespace ::nitrokey::log;
+
+ Log::instance()(__PRETTY_FUNCTION__, Loglevel::DEBUG_L2);
+
+ CommError status;
+ OutgoingPacket outp;
+ ResponsePacket resp;
+
+ // POD types can't have non-default constructors
+ outp.initialize();
+ resp.initialize();
+
+ outp.payload = payload;
+ outp.update_CRC();
+
+ Log::instance()("Outgoing HID packet:", Loglevel::DEBUG);
+ Log::instance()((std::string)(outp), Loglevel::DEBUG);
+
+ if (!outp.isValid()) throw std::runtime_error("Invalid outgoing packet");
+
+ status = dev.send(&outp);
+ if ((int)(status) < 0 && status != CommError::ERR_NO_ERROR)
+ throw std::runtime_error(
+ std::string("Device error while sending command ") +
+ std::to_string((int)(status)));
+
+ status = dev.recv(&resp);
+ if ((int)(status) < 0 && status != CommError::ERR_NO_ERROR)
+ throw std::runtime_error(
+ std::string("Device error while executing command ") +
+ std::to_string((int)(status)));
+
+ Log::instance()("Incoming HID packet:", Loglevel::DEBUG);
+ Log::instance()((std::string)(resp), Loglevel::DEBUG);
+
+ if (!resp.isValid()) throw std::runtime_error("Invalid incoming packet");
+
+ // See: DeviceResponse
+ return resp.payload;
+ }
+
+ static response_payload run(device::Device &dev) {
+ command_payload empty_payload;
+ return run(dev, empty_payload);
+ }
};
-
}
}
#endif
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