bool
WPASupplicant::ExpectResponse(const char *expected)
{
const size_t length = strlen(expected);
char buffer[4096];
assert(length <= sizeof(buffer));
return ReadTimeout(buffer, sizeof(buffer)) == ssize_t(length) &&
memcmp(buffer, expected, length) == 0;
}
std::string
BasicModem::readLine(Time::Counter<double>& timer)
{
if (m_lines.waitForItems(timer.getRemaining()))
{
std::string line = m_lines.pop();
if (line != m_last_cmd)
return line;
else
return readLine(timer);
}
throw ReadTimeout();
}
bool
WPASupplicant::Status(WifiStatus &status)
{
if (!SendCommand("STATUS"))
return false;
char buffer[4096];
ssize_t nbytes = ReadTimeout(buffer, sizeof(buffer) - 1);
if (nbytes <= 0)
return false;
buffer[nbytes] = 0;
return ParseStatus(status, buffer);
}
void
BasicModem::readRaw(Time::Counter<double>& timer, uint8_t* data, unsigned data_size)
{
unsigned bytes_read = 0;
while (!timer.overflow())
{
if (m_bytes.waitForItems(timer.getRemaining()))
data[bytes_read++] = m_bytes.pop();
if (bytes_read == data_size)
return;
}
throw ReadTimeout();
}
int
WPASupplicant::ListNetworks(WifiConfiguredNetworkInfo *dest, unsigned max)
{
assert(dest != nullptr);
assert(max > 0);
if (!SendCommand("LIST_NETWORKS"))
return -1;
char buffer[4096];
ssize_t nbytes = ReadTimeout(buffer, sizeof(buffer) - 1);
if (nbytes <= 5)
return -1;
buffer[nbytes] = 0;
return ParseListResults(dest, max, buffer);
}
int
WPASupplicant::ScanResults(WifiVisibleNetwork *dest, unsigned max)
{
assert(dest != nullptr);
assert(max > 0);
if (!SendCommand("SCAN_RESULTS"))
return -1;
char buffer[4096];
ssize_t nbytes = ReadTimeout(buffer, sizeof(buffer) - 1);
if (nbytes <= 5)
return -1;
buffer[nbytes] = 0;
return ParseScanResults(dest, max, buffer);
}
int
WPASupplicant::AddNetwork()
{
if (!SendCommand("ADD_NETWORK"))
return -1;
char buffer[4096];
ssize_t nbytes = ReadTimeout(buffer, sizeof(buffer));
if (nbytes < 2 || buffer[nbytes - 1] != '\n')
return -1;
buffer[nbytes - 1] = 0;
char *endptr;
unsigned id = ParseUnsigned(buffer, &endptr);
if (endptr == buffer || *endptr != 0)
return -1;
return id;
}
