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as_reader_worker.c
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#include "as_reader_worker.h"
#include <nfc/protocols/iso14443_4a/iso14443_4a_poller.h>
#define TAG "AsReaderWorker"
#define WORKERSTOP (1UL << 0UL)
#define POLLERFINISH (1UL << 1UL)
#define POLLERTRXFINISH (1UL << 2UL)
void as_reader_worker_change_state(AsReaderWorker* as_reader_worker, AsReaderWorkerState state) {
as_reader_worker->state = state;
if(as_reader_worker->callback) as_reader_worker->callback(state, as_reader_worker->nfc_relay);
}
AsReaderWorker* as_reader_worker_alloc(NfcRelay* nfc_relay) {
furi_assert(nfc_relay);
FURI_LOG_D(TAG, "as_reader_worker_alloc");
AsReaderWorker* as_reader_worker = malloc(sizeof(AsReaderWorker));
as_reader_worker->thread = furi_thread_alloc_ex(
"AsReaderWorkerThread", 2048, as_reader_worker_task, as_reader_worker);
as_reader_worker->running = false;
as_reader_worker->comm = comm_alloc(nfc_relay->config);
as_reader_worker->nfc = nfc_alloc();
as_reader_worker->bitbuffer_rx = bit_buffer_alloc(256);
as_reader_worker->bitbuffer_tx = bit_buffer_alloc(256);
as_reader_worker->nfc_relay = nfc_relay;
as_reader_worker->callback = NULL;
return as_reader_worker;
}
void as_reader_worker_free(AsReaderWorker* as_reader_worker) {
furi_assert(as_reader_worker);
FURI_LOG_D(TAG, "as_reader_worker_free");
comm_free(as_reader_worker->comm);
nfc_free(as_reader_worker->nfc);
bit_buffer_free(as_reader_worker->bitbuffer_rx);
bit_buffer_free(as_reader_worker->bitbuffer_tx);
furi_thread_free(as_reader_worker->thread);
free(as_reader_worker);
}
void as_reader_worker_stop(AsReaderWorker* as_reader_worker) {
furi_assert(as_reader_worker);
FURI_LOG_D(TAG, "as_reader_worker_stop");
as_reader_worker->running = false;
furi_thread_flags_set(furi_thread_get_id(as_reader_worker->thread), WORKERSTOP);
furi_thread_join(as_reader_worker->thread);
comm_deinit(as_reader_worker->comm);
as_reader_worker->callback = NULL;
}
void as_reader_worker_start(AsReaderWorker* as_reader_worker, AsReaderWorkerCallback callback) {
FURI_LOG_D(TAG, "as_reader_worker_start");
furi_assert(as_reader_worker);
as_reader_worker->running = true;
comm_init(as_reader_worker->comm);
as_reader_worker->callback = callback;
furi_thread_start(as_reader_worker->thread);
}
static NfcCommand as_reader_worker_poller_trx_callback(NfcGenericEvent event, void* context) {
furi_assert(event.protocol == NfcProtocolIso14443_4a);
furi_assert(context);
AsReaderWorker* as_reader_worker = context;
const Iso14443_4aPollerEvent* iso14443_4a_event = event.event_data;
if(iso14443_4a_event->type == Iso14443_4aPollerEventTypeReady) {
if(as_reader_worker->state == AsReaderWorkerStateCardSearch) {
//FURI_LOG_D(TAG, "Card Found");
as_reader_worker_change_state(as_reader_worker, AsReaderWorkerStateCardFound);
furi_thread_flags_set(furi_thread_get_id(as_reader_worker->thread), POLLERFINISH);
return NfcCommandContinue;
} else if(as_reader_worker->state == AsReaderWorkerStateInteractive) {
if(as_reader_worker->apdu_ready) {
FURI_LOG_D(TAG, "Card Found, Send TX");
Iso14443_4aError err = iso14443_4a_poller_send_block(
event.instance,
as_reader_worker->bitbuffer_tx,
as_reader_worker->bitbuffer_rx);
trace_bit_buffer_hexdump(TAG, "Emu Reader TX", as_reader_worker->bitbuffer_tx);
if(err == Iso14443_4aErrorNone) {
trace_bit_buffer_hexdump(TAG, "Emu Reader RX", as_reader_worker->bitbuffer_rx);
FURI_LOG_D(TAG, "Card Found, Recv RX");
NfcRelayPacket* packet = packet_alloc_data(
NfcRelayPacketApduResp,
bit_buffer_get_size_bytes(as_reader_worker->bitbuffer_rx),
bit_buffer_get_data(as_reader_worker->bitbuffer_rx));
comm_write_packet(as_reader_worker->comm, packet);
free(packet);
FURI_LOG_D(TAG, "Card Found, Sent Relay Packet");
} else {
FURI_LOG_E(TAG, "NfcError: %d", err);
}
as_reader_worker->apdu_ready = false;
furi_thread_flags_set(
furi_thread_get_id(as_reader_worker->thread), POLLERTRXFINISH);
return NfcCommandContinue;
} else {
//FURI_LOG_T(TAG, "Card Ready, but apdu data not");
furi_delay_ms(1);
return NfcCommandContinue;
}
} else if(as_reader_worker->state == AsReaderWorkerStateCardFound) {
FURI_LOG_D(TAG, "still in AsReaderWorkerStateCardFound");
furi_delay_ms(1000);
return NfcCommandContinue;
} else {
FURI_LOG_D(TAG, "WHAT?");
return NfcCommandStop;
}
}
furi_thread_flags_set(furi_thread_get_id(as_reader_worker->thread), POLLERTRXFINISH);
return NfcCommandContinue;
}
int32_t as_reader_worker_task(void* context) {
furi_assert(context);
AsReaderWorker* as_reader_worker = context;
FURI_LOG_D(TAG, "Send Ping Packet");
comm_send_pingpong(as_reader_worker->comm, NfcRelayPacketPing, NfcRelayAsReader);
NfcRelayPacket* packet = NULL;
while(1) {
if(!as_reader_worker->running) {
FURI_LOG_D(TAG, "as_reader_worker stop running, break");
break;
}
if(as_reader_worker->state == AsReaderWorkerStateWaitPong) {
if(comm_wait_pong(as_reader_worker->comm, NfcRelayAsCard, NfcRelayAsReader)) {
FURI_LOG_D(TAG, "comm_wait_pong succ, change state");
as_reader_worker_change_state(as_reader_worker, AsReaderWorkerStateCardSearch);
as_reader_worker->poller =
nfc_poller_alloc(as_reader_worker->nfc, NfcProtocolIso14443_4a);
nfc_poller_start(
as_reader_worker->poller,
as_reader_worker_poller_trx_callback,
as_reader_worker);
} else {
furi_delay_ms(100);
continue;
}
} else if(as_reader_worker->state == AsReaderWorkerStateCardSearch) {
FURI_LOG_D(TAG, "AsReaderWorkerStateCardSearch");
furi_thread_flags_wait(POLLERFINISH || WORKERSTOP, FuriFlagWaitAny, 1000);
continue;
} else if(as_reader_worker->state == AsReaderWorkerStateCardFound) {
FURI_LOG_D(TAG, "Card Found");
const Iso14443_4aData* dev_data = nfc_poller_get_data(as_reader_worker->poller);
SerializedIso14443_4a* serialized = iso14443_4a_serialize(dev_data);
packet = packet_alloc_data(
NfcRelayPacketNfcDevData, sizeof(*serialized) + serialized->len_t1_tk, serialized);
FURI_LOG_D(TAG, "packet->len: %d", packet->len);
comm_write_packet(as_reader_worker->comm, packet);
free(packet);
packet = NULL;
free(serialized);
serialized = NULL;
as_reader_worker_change_state(as_reader_worker, AsReaderWorkerStateInteractive);
continue;
} else if(as_reader_worker->state == AsReaderWorkerStateInteractive) {
NfcRelayPacket* recv_packet;
recv_packet = comm_wait_packet(as_reader_worker->comm, NfcRelayPacketApduReq);
if(!recv_packet) {
continue;
}
FURI_LOG_D(TAG, "Recv NfcRelayPacketApduReq");
// drop PCB
bit_buffer_copy_bytes(
as_reader_worker->bitbuffer_tx, &recv_packet->buf[1], recv_packet->len - 1);
trace_bit_buffer_hexdump(TAG, "Reader apdu recv", as_reader_worker->bitbuffer_tx);
free(recv_packet);
recv_packet = NULL;
as_reader_worker->apdu_ready = true;
furi_thread_flags_wait(POLLERTRXFINISH || WORKERSTOP, FuriFlagWaitAny, 100);
}
}
if(as_reader_worker->poller) {
nfc_poller_stop(as_reader_worker->poller);
nfc_poller_free(as_reader_worker->poller);
as_reader_worker->poller = NULL;
}
FURI_LOG_D(TAG, "as_reader_worker stop running, poller freed");
return 0;
}