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instead of performing costly memory dealloc and alloc, check if inner array is alloced, clear and rewrite it, this will also hopefully correct strange crash conditions when the NAC changes during operation;

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fix_nid_array_cleanup
Bryan Biedenkapp 3 weeks ago
parent d05a593b36
commit 4f62a7e9a9
1 changed files with 42 additions and 16 deletions
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30
src/common/p25/NID.cpp
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@ -71,7 +71,6 @@ bool NID::decode(const uint8_t* data)
// handle digital "squelch" NAC
if ((m_nac == NAC_DIGITAL_SQ) || (m_nac == NAC_REUSE_RX_NAC)) {
uint32_t nac = ((nid[0U] << 4) + (nid[1U] >> 4)) & 0xFFFU;
cleanupArrays();
createRxTxNID(nac); // bryanb: I hate this and it'll be slow
}
@ -144,7 +143,6 @@ void NID::encode(uint8_t* data, defines::DUID::E duid)
else {
// handle digital "squelch" NAC
if (m_nac == NAC_DIGITAL_SQ) {
cleanupArrays();
createRxTxNID(DEFAULT_NAC);
}
@ -202,49 +200,63 @@ void NID::createRxTxNID(uint32_t nac)
{
edac::BCH bch;
if (m_rxTx[DUID::HDU] == nullptr)
m_rxTx[DUID::HDU] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_rxTx[DUID::HDU], 0, P25_NID_LENGTH_BYTES);
m_rxTx[DUID::HDU][0U] = (nac >> 4) & 0xFFU;
m_rxTx[DUID::HDU][1U] = (nac << 4) & 0xF0U;
m_rxTx[DUID::HDU][1U] |= DUID::HDU;
bch.encode(m_rxTx[DUID::HDU]);
m_rxTx[DUID::HDU][7U] &= 0xFEU; // Clear the parity bit
if (m_rxTx[DUID::TDU] == nullptr)
m_rxTx[DUID::TDU] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_rxTx[DUID::TDU], 0, P25_NID_LENGTH_BYTES);
m_rxTx[DUID::TDU][0U] = (nac >> 4) & 0xFFU;
m_rxTx[DUID::TDU][1U] = (nac << 4) & 0xF0U;
m_rxTx[DUID::TDU][1U] |= DUID::TDU;
bch.encode(m_rxTx[DUID::TDU]);
m_rxTx[DUID::TDU][7U] &= 0xFEU; // Clear the parity bit
if (m_rxTx[DUID::LDU1] == nullptr)
m_rxTx[DUID::LDU1] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_rxTx[DUID::LDU1], 0, P25_NID_LENGTH_BYTES);
m_rxTx[DUID::LDU1][0U] = (nac >> 4) & 0xFFU;
m_rxTx[DUID::LDU1][1U] = (nac << 4) & 0xF0U;
m_rxTx[DUID::LDU1][1U] |= DUID::LDU1;
bch.encode(m_rxTx[DUID::LDU1]);
m_rxTx[DUID::LDU1][7U] |= 0x01U; // Set the parity bit
if (m_rxTx[DUID::PDU] == nullptr)
m_rxTx[DUID::PDU] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_rxTx[DUID::PDU], 0, P25_NID_LENGTH_BYTES);
m_rxTx[DUID::PDU][0U] = (nac >> 4) & 0xFFU;
m_rxTx[DUID::PDU][1U] = (nac << 4) & 0xF0U;
m_rxTx[DUID::PDU][1U] |= DUID::PDU;
bch.encode(m_rxTx[DUID::PDU]);
m_rxTx[DUID::PDU][7U] &= 0xFEU; // Clear the parity bit
if (m_rxTx[DUID::TSDU] == nullptr)
m_rxTx[DUID::TSDU] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_rxTx[DUID::TSDU], 0, P25_NID_LENGTH_BYTES);
m_rxTx[DUID::TSDU][0U] = (nac >> 4) & 0xFFU;
m_rxTx[DUID::TSDU][1U] = (nac << 4) & 0xF0U;
m_rxTx[DUID::TSDU][1U] |= DUID::TSDU;
bch.encode(m_rxTx[DUID::TSDU]);
m_rxTx[DUID::TSDU][7U] &= 0xFEU; // Clear the parity bit
if (m_rxTx[DUID::LDU2] == nullptr)
m_rxTx[DUID::LDU2] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_rxTx[DUID::LDU2], 0, P25_NID_LENGTH_BYTES);
m_rxTx[DUID::LDU2][0U] = (nac >> 4) & 0xFFU;
m_rxTx[DUID::LDU2][1U] = (nac << 4) & 0xF0U;
m_rxTx[DUID::LDU2][1U] |= DUID::LDU2;
bch.encode(m_rxTx[DUID::LDU2]);
m_rxTx[DUID::LDU2][7U] |= 0x01U; // Set the parity bit
if (m_rxTx[DUID::TDULC] == nullptr)
m_rxTx[DUID::TDULC] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_rxTx[DUID::TDULC], 0, P25_NID_LENGTH_BYTES);
m_rxTx[DUID::TDULC][0U] = (nac >> 4) & 0xFFU;
m_rxTx[DUID::TDULC][1U] = (nac << 4) & 0xF0U;
m_rxTx[DUID::TDULC][1U] |= DUID::TDULC;
@ -258,49 +270,63 @@ void NID::createTxNID(uint32_t nac)
{
edac::BCH bch;
if (m_tx[DUID::HDU] == nullptr)
m_tx[DUID::HDU] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_tx[DUID::HDU], 0, P25_NID_LENGTH_BYTES);
m_tx[DUID::HDU][0U] = (nac >> 4) & 0xFFU;
m_tx[DUID::HDU][1U] = (nac << 4) & 0xF0U;
m_tx[DUID::HDU][1U] |= DUID::HDU;
bch.encode(m_tx[DUID::HDU]);
m_tx[DUID::HDU][7U] &= 0xFEU; // Clear the parity bit
if (m_tx[DUID::TDU] == nullptr)
m_tx[DUID::TDU] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_tx[DUID::TDU], 0, P25_NID_LENGTH_BYTES);
m_tx[DUID::TDU][0U] = (nac >> 4) & 0xFFU;
m_tx[DUID::TDU][1U] = (nac << 4) & 0xF0U;
m_tx[DUID::TDU][1U] |= DUID::TDU;
bch.encode(m_tx[DUID::TDU]);
m_tx[DUID::TDU][7U] &= 0xFEU; // Clear the parity bit
if (m_tx[DUID::LDU1] == nullptr)
m_tx[DUID::LDU1] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_tx[DUID::LDU1], 0, P25_NID_LENGTH_BYTES);
m_tx[DUID::LDU1][0U] = (nac >> 4) & 0xFFU;
m_tx[DUID::LDU1][1U] = (nac << 4) & 0xF0U;
m_tx[DUID::LDU1][1U] |= DUID::LDU1;
bch.encode(m_tx[DUID::LDU1]);
m_tx[DUID::LDU1][7U] |= 0x01U; // Set the parity bit
if (m_tx[DUID::PDU] == nullptr)
m_tx[DUID::PDU] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_tx[DUID::PDU], 0, P25_NID_LENGTH_BYTES);
m_tx[DUID::PDU][0U] = (nac >> 4) & 0xFFU;
m_tx[DUID::PDU][1U] = (nac << 4) & 0xF0U;
m_tx[DUID::PDU][1U] |= DUID::PDU;
bch.encode(m_tx[DUID::PDU]);
m_tx[DUID::PDU][7U] &= 0xFEU; // Clear the parity bit
if (m_tx[DUID::TSDU] == nullptr)
m_tx[DUID::TSDU] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_tx[DUID::TSDU], 0, P25_NID_LENGTH_BYTES);
m_tx[DUID::TSDU][0U] = (nac >> 4) & 0xFFU;
m_tx[DUID::TSDU][1U] = (nac << 4) & 0xF0U;
m_tx[DUID::TSDU][1U] |= DUID::TSDU;
bch.encode(m_tx[DUID::TSDU]);
m_tx[DUID::TSDU][7U] &= 0xFEU; // Clear the parity bit
if (m_tx[DUID::LDU2] == nullptr)
m_tx[DUID::LDU2] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_tx[DUID::LDU2], 0, P25_NID_LENGTH_BYTES);
m_tx[DUID::LDU2][0U] = (nac >> 4) & 0xFFU;
m_tx[DUID::LDU2][1U] = (nac << 4) & 0xF0U;
m_tx[DUID::LDU2][1U] |= DUID::LDU2;
bch.encode(m_tx[DUID::LDU2]);
m_tx[DUID::LDU2][7U] |= 0x01U; // Set the parity bit
if (m_tx[DUID::TDULC] == nullptr)
m_tx[DUID::TDULC] = new uint8_t[P25_NID_LENGTH_BYTES];
::memset(m_tx[DUID::TDULC], 0, P25_NID_LENGTH_BYTES);
m_tx[DUID::TDULC][0U] = (nac >> 4) & 0xFFU;
m_tx[DUID::TDULC][1U] = (nac << 4) & 0xF0U;
m_tx[DUID::TDULC][1U] |= DUID::TDULC;

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