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authorSzczepan Zalega <szczepan@nitrokey.com>2016-10-17 22:08:59 +0200
committerSzczepan Zalega <szczepan@nitrokey.com>2016-10-19 16:35:22 +0200
commita47a7bc3c838a37e15e4464be75736cd83573da2 (patch)
tree6eff6e94f01e656e4d184574bb31009610772053 /include
parent62f48fa92db1be555a955328c6654a301cf6f7c8 (diff)
downloadlibnitrokey-a47a7bc3c838a37e15e4464be75736cd83573da2.tar.gz
libnitrokey-a47a7bc3c838a37e15e4464be75736cd83573da2.tar.bz2
Resend outgoing packet on invalid crc and when used all receiving retries
Signed-off-by: Szczepan Zalega <szczepan@nitrokey.com>
Diffstat (limited to 'include')
-rw-r--r--include/device_proto.h117
1 files changed, 66 insertions, 51 deletions
diff --git a/include/device_proto.h b/include/device_proto.h
index ff8bb67..2d39a04 100644
--- a/include/device_proto.h
+++ b/include/device_proto.h
@@ -218,61 +218,76 @@ namespace nitrokey {
if (!outp.isValid()) throw std::runtime_error("Invalid outgoing packet");
- status = dev.send(&outp);
- if (status <= 0)
- throw std::runtime_error(
- std::string("Device error while sending command ") +
- std::to_string((int) (status)));
-
- std::this_thread::sleep_for(dev.get_send_receive_delay());
-
- // FIXME make checks done in device:recv here
- int retry = dev.get_retry_count();
- while (retry-- > 0) {
- status = dev.recv(&resp);
-
- if (dev.get_device_model() == DeviceModel::STORAGE &&
- resp.command_id >= 0x20 &&
-// resp.command_id <= 0x20 + 26
- resp.command_id < 0x60
- ){
+ int retry = 0;
+ int sending_retry_counter = 3;
+ while (sending_retry_counter-->0) {
+ status = dev.send(&outp);
+ if (status <= 0)
+ throw std::runtime_error(
+ std::string("Device error while sending command ") +
+ std::to_string((int) (status)));
+
+ std::this_thread::sleep_for(dev.get_send_receive_delay());
+
+ // FIXME make checks done in device:recv here
+ retry = dev.get_retry_count();
+ while (retry-- > 0) {
+ status = dev.recv(&resp);
+
+ if (dev.get_device_model() == DeviceModel::STORAGE &&
+ resp.command_id >= 0x20 &&
+ // resp.command_id <= 0x20 + 26
+ resp.command_id < 0x60
+ ) {
Log::instance()(std::string("Detected storage device cmd, status: ") +
- std::to_string(resp.StorageStatus.Status_u8), Loglevel::DEBUG_L2);
-
- resp.last_command_status = 0;
- switch(resp.StorageStatus.Status_u8){
- case 0:
- case 1:
- resp.last_command_status = 0;
- resp.device_status = 0;
- break;
- case 2:
- resp.last_command_status = 0;
- resp.device_status = 1; //pro busy
- break;
- case 3:
- case 4:
- resp.last_command_status = 4;
- resp.device_status = 0;
- break;
- };
+ std::to_string(resp.StorageStatus.Status_u8), Loglevel::DEBUG_L2);
+
+ resp.last_command_status = 0;
+ switch (resp.StorageStatus.Status_u8) {
+ case 0:
+ case 1:
+ resp.last_command_status = 0;
+ resp.device_status = 0;
+ break;
+ case 2:
+ resp.last_command_status = 0;
+ resp.device_status = 1; //pro busy
+ break;
+ case 3:
+ case 4:
+ resp.last_command_status = 4;
+ resp.device_status = 0;
+ break;
+ };
+ }
+
+ //SENDPASSWORD gives wrong CRC , for now rely on !=0 (TODO report)
+// if (resp.device_status == 0 && resp.last_command_crc == outp.crc && resp.isCRCcorrect()) break;
+ if (resp.device_status == 0 && resp.last_command_crc == outp.crc && resp.isValid()) break;
+ if (resp.device_status == 1 ) {
+ retry++;
+ Log::instance()("Status busy, not decresing retry counter: " + std::to_string(retry), Loglevel::DEBUG_L2);
+ }
+ Log::instance()(std::string("Retry status - dev status, equal crc, correct CRC: ")
+ + std::to_string(resp.device_status) + " " +
+ std::to_string(resp.last_command_crc == outp.crc) +
+ " " + std::to_string(resp.isCRCcorrect()), Loglevel::DEBUG_L2);
+
+ Log::instance()(
+ "Device is not ready or received packet's last CRC is not equal to sent CRC packet, retrying...",
+ Loglevel::DEBUG);
+ Log::instance()("Invalid incoming HID packet:", Loglevel::DEBUG_L2);
+ Log::instance()((std::string) (resp), Loglevel::DEBUG_L2);
+ std::this_thread::sleep_for(dev.get_retry_timeout());
+ continue;
}
-
- dev.set_last_command_status(resp.last_command_status); // FIXME should be handled on device.recv
-
if (resp.device_status == 0 && resp.last_command_crc == outp.crc) break;
- Log::instance()(std::string("Retry status: ")
- + std::to_string(resp.device_status) + " " +
- std::to_string(resp.last_command_crc==outp.crc), Loglevel::DEBUG_L2);
-
- Log::instance()(
- "Device is not ready or received packet's last CRC is not equal to sent CRC packet, retrying...",
- Loglevel::DEBUG);
- Log::instance()("Invalid incoming HID packet:", Loglevel::DEBUG_L2);
- Log::instance()((std::string) (resp), Loglevel::DEBUG_L2);
- std::this_thread::sleep_for(dev.get_retry_timeout());
- continue;
+ Log::instance()(std::string("Resending (outer loop) "), Loglevel::DEBUG_L2);
+ Log::instance()(std::string("sending_retry_counter count: ") + std::to_string(sending_retry_counter), Loglevel::DEBUG);
}
+
+ dev.set_last_command_status(resp.last_command_status); // FIXME should be handled on device.recv
+
clear_packet(outp);
if (status <= 0)