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#include <chrono>
#include <thread>
#include <cstddef>
#include <stdexcept>
#include <hidapi/hidapi.h>
#include "device.h"
#include "log.h"
#include "misc.h"
using namespace nitrokey::device;
using namespace nitrokey::log;
Device::Device()
: m_vid(0),
m_pid(0),
m_retry_count(4),
m_retry_timeout(50),
mp_devhandle(NULL) {}
bool Device::disconnect() {
Log::instance()(__PRETTY_FUNCTION__, Loglevel::DEBUG_L2);
hid_exit();
mp_devhandle = NULL;
return true;
}
bool Device::connect() {
Log::instance()(__PRETTY_FUNCTION__, Loglevel::DEBUG_L2);
// hid_init();
mp_devhandle = hid_open(m_vid, m_pid, NULL);
// hid_init();
return mp_devhandle != NULL;
}
CommError Device::send(const void *packet) {
Log::instance()(__PRETTY_FUNCTION__, Loglevel::DEBUG_L2);
if (mp_devhandle == NULL)
throw std::runtime_error("Attempted HID send on an invalid descriptor.");
return (CommError)(hid_send_feature_report(
mp_devhandle, (const unsigned char *)(packet), HID_REPORT_SIZE));
}
CommError Device::recv(void *packet) {
// FIXME change CommError return value to int (return value of
// hid_get_feature_report)
int status;
int retry_count = 0;
Log::instance()(__PRETTY_FUNCTION__, Loglevel::DEBUG_L2);
if (mp_devhandle == NULL)
throw std::runtime_error("Attempted HID receive on an invalid descriptor.");
// FIXME extract error handling and repeating to parent function in
// device_proto:192
for (;;) {
status = (hid_get_feature_report(mp_devhandle, (unsigned char *)(packet),
HID_REPORT_SIZE));
// FIXME handle getting libhid error message somewhere else
auto pwherr = hid_error(mp_devhandle);
std::wstring wherr = (pwherr != NULL) ? pwherr : L"No error message";
std::string herr(wherr.begin(), wherr.end());
Log::instance()(std::string("libhid error message: ") + herr,
Loglevel::DEBUG_L2);
if (status > 0) break; // success
if (retry_count++ >= m_retry_count) {
Log::instance()(
"Maximum retry count reached" + std::to_string(retry_count),
Loglevel::WARNING);
break;
}
Log::instance()("Retrying... " + std::to_string(retry_count),
Loglevel::DEBUG);
std::this_thread::sleep_for(m_retry_timeout);
}
return (CommError)status;
}
Stick10::Stick10() {
m_vid = 0x20a0;
m_pid = 0x4108;
}
Stick20::Stick20() {
m_vid = 0x20a0;
m_pid = 0x4109;
}
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