| #include <stdint.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <assert.h> |
| #include <stdlib.h> |
| |
| #include "card_emu.h" |
| #include "cardemu_prot.h" |
| #include "tc_etu.h" |
| #include "req_ctx.h" |
| |
| /* stub functions required by card_emu.c */ |
| |
| int card_emu_uart_update_fidi(uint8_t uart_chan, unsigned int fidi) |
| { |
| printf("uart_update_fidi(uart_chan=%u, fidi=%u)\n", uart_chan, fidi); |
| return 0; |
| } |
| |
| int card_emu_uart_tx(uint8_t uart_chan, uint8_t byte) |
| { |
| printf("TX: 0x%02x\n", byte); |
| return 1; |
| } |
| |
| void card_emu_uart_enable(uint8_t uart_chan, uint8_t rxtx) |
| { |
| char *rts; |
| switch (rxtx) { |
| case 0: |
| rts = "OFF"; |
| break; |
| case ENABLE_TX: |
| rts = "TX"; |
| break; |
| case ENABLE_RX: |
| rts = "RX"; |
| break; |
| default: |
| rts = "unknown"; |
| break; |
| }; |
| |
| printf("uart_enable(uart_chan=%u, %s)\n", uart_chan, rts); |
| } |
| |
| void tc_etu_set_wtime(uint8_t tc_chan, uint16_t wtime) |
| { |
| printf("tc_etu_set_wtime(tc_chan=%u, wtime=%u)\n", tc_chan, wtime); |
| } |
| |
| void tc_etu_set_etu(uint8_t tc_chan, uint16_t etu) |
| { |
| printf("tc_etu_set_etu(tc_chan=%u, etu=%u)\n", tc_chan, etu); |
| } |
| |
| void tc_etu_init(uint8_t chan_nr, void *handle) |
| { |
| } |
| |
| |
| |
| |
| #if 0 |
| /* process a single byte received from the reader */ |
| void card_emu_process_rx_byte(struct card_handle *ch, uint8_t byte); |
| |
| /* return a single byte to be transmitted to the reader */ |
| int card_emu_get_tx_byte(struct card_handle *ch, uint8_t *byte); |
| |
| /* hardware driver informs us that a card I/O signal has changed */ |
| void card_emu_io_statechg(struct card_handle *ch, enum card_io io, int active); |
| |
| /* User sets a new ATR to be returned during next card reset */ |
| int card_emu_set_atr(struct card_handle *ch, const uint8_t *atr, uint8_t len); |
| #endif |
| |
| |
| static int verify_atr(struct card_handle *ch) |
| { |
| uint8_t atr[4]; |
| uint8_t byte; |
| unsigned int i; |
| |
| printf("receiving + verifying ATR:"); |
| for (i = 0; i < sizeof(atr); i++) { |
| assert(card_emu_get_tx_byte(ch, &atr[i]) == 1); |
| printf(" %02x", atr[i]); |
| } |
| printf("\n"); |
| assert(card_emu_get_tx_byte(ch, &byte) == 0); |
| |
| return 1; |
| } |
| |
| static void io_start_card(struct card_handle *ch) |
| { |
| uint8_t byte; |
| |
| /* bring the card up from the dead */ |
| card_emu_io_statechg(ch, CARD_IO_VCC, 1); |
| assert(card_emu_get_tx_byte(ch, &byte) == 0); |
| card_emu_io_statechg(ch, CARD_IO_CLK, 1); |
| assert(card_emu_get_tx_byte(ch, &byte) == 0); |
| card_emu_io_statechg(ch, CARD_IO_RST, 1); |
| assert(card_emu_get_tx_byte(ch, &byte) == 0); |
| |
| /* release from reset and verify th ATR */ |
| card_emu_io_statechg(ch, CARD_IO_RST, 0); |
| verify_atr(ch); |
| } |
| |
| static void send_bytes(struct card_handle *ch, const uint8_t *bytes, unsigned int len) |
| { |
| unsigned int i; |
| for (i = 0; i < len; i++) |
| card_emu_process_rx_byte(ch, bytes[i]); |
| } |
| |
| static void dump_rctx(struct req_ctx *rctx) |
| { |
| struct cardemu_usb_msg_hdr *mh = |
| (struct cardemu_usb_msg_hdr *) rctx->data; |
| struct cardemu_usb_msg_rx_data *rxd; |
| int i; |
| |
| printf("req_ctx(%p): state=%u, size=%u, tot_len=%u, idx=%u, data=%p\n", |
| rctx, rctx->state, rctx->size, rctx->tot_len, rctx->idx, rctx->data); |
| printf(" msg_type=%u, seq_nr=%u, data_len=%u\n", |
| mh->msg_type, mh->seq_nr, mh->data_len); |
| |
| switch (mh->msg_type) { |
| case CEMU_USB_MSGT_DO_RX_DATA: |
| rxd = (struct cardemu_usb_msg_rx_data *)mh; |
| printf(" flags=%x, data=", rxd->flags); |
| for (i = 0; i < mh->data_len; i++) |
| printf(" %02x", rxd->data[i]); |
| printf("\n"); |
| break; |
| } |
| } |
| |
| /* emulate a TPDU header being sent by the reader/phone */ |
| static void send_tpdu_hdr(struct card_handle *ch, const uint8_t *tpdu_hdr) |
| { |
| struct req_ctx *rctx; |
| |
| /* we don't want a receive context to become available during |
| * the first four bytes */ |
| send_bytes(ch, tpdu_hdr, 4); |
| assert(!req_ctx_find_get(1, RCTX_S_USB_TX_PENDING, RCTX_S_USB_TX_BUSY)); |
| |
| send_bytes(ch, tpdu_hdr+4, 1); |
| /* but then after the final byte of the TPDU header, we want a |
| * receive context to be available for USB transmission */ |
| rctx = req_ctx_find_get(1, RCTX_S_USB_TX_PENDING, RCTX_S_USB_TX_BUSY); |
| assert(rctx); |
| dump_rctx(rctx); |
| |
| /* free the req_ctx, indicating it has fully arrived on the host */ |
| req_ctx_set_state(rctx, RCTX_S_FREE); |
| } |
| |
| /* emulate a CEMU_USB_MSGT_DT_TX_DATA received from USB */ |
| static void host_to_device_data(const uint8_t *data, uint16_t len, int continue_rx) |
| { |
| struct req_ctx *rctx; |
| struct cardemu_usb_msg_rx_data *rd; |
| |
| /* allocate a free req_ctx */ |
| rctx = req_ctx_find_get(1, RCTX_S_FREE, RCTX_S_USB_RX_BUSY); |
| assert(rctx); |
| |
| /* initialize the header */ |
| rd = (struct cardemu_usb_msg_rx_data *) rctx->data; |
| rctx->size = sizeof(*rd); |
| cardemu_hdr_set(&rd->hdr, CEMU_USB_MSGT_DT_TX_DATA); |
| if (continue_rx) |
| rd->flags = CEMU_DATA_F_PB_AND_RX; |
| else |
| rd->flags = CEMU_DATA_F_PB_AND_TX; |
| /* copy data and set length */ |
| rd->hdr.data_len = len; |
| memcpy(rd->data, data, len); |
| |
| /* hand the req_ctx to the UART transmit code */ |
| req_ctx_set_state(rctx, RCTX_S_UART_TX_PENDING); |
| } |
| |
| static int print_tx_chars(struct card_handle *ch) |
| { |
| uint8_t byte; |
| int count = 0; |
| |
| while (card_emu_get_tx_byte(ch, &byte)) { |
| printf("UART_TX(%02x)\n", byte); |
| count++; |
| } |
| return count; |
| } |
| |
| const uint8_t tpdu_hdr_sel_mf[] = { 0xA0, 0xA4, 0x00, 0x00, 0x02 }; |
| const uint8_t tpdu_pb_sw[] = { 0xA4, 0x90, 0x00 }; |
| |
| int main(int argc, char **argv) |
| { |
| struct card_handle *ch; |
| |
| req_ctx_init(); |
| |
| ch = card_emu_init(0, 23, 42); |
| assert(ch); |
| |
| /* start up the card (VCC/RST, ATR) */ |
| io_start_card(ch); |
| assert(!print_tx_chars(ch)); |
| |
| /* emulate the reader sending a TPDU header */ |
| send_tpdu_hdr(ch, tpdu_hdr_sel_mf); |
| assert(!print_tx_chars(ch)); |
| /* card emulator sends a response via USB */ |
| host_to_device_data(tpdu_pb_sw, sizeof(tpdu_pb_sw), 0); |
| /* obtain any pending tx chars */ |
| assert(print_tx_chars(ch) == sizeof(tpdu_pb_sw)); |
| |
| exit(0); |
| } |