diff options
Diffstat (limited to 'openpicc')
| -rw-r--r-- | openpicc/application/iso14443a_pretender.c | 95 |
1 files changed, 48 insertions, 47 deletions
diff --git a/openpicc/application/iso14443a_pretender.c b/openpicc/application/iso14443a_pretender.c index c2e37d5..afbebdb 100644 --- a/openpicc/application/iso14443a_pretender.c +++ b/openpicc/application/iso14443a_pretender.c @@ -49,25 +49,38 @@ static const iso14443_frame ATQA_FRAME = { {} }; -static const iso14443_frame LONG_FRAME = { +static const iso14443_frame UID_FRAME = { TYPE_A, {{STANDARD_FRAME, PARITY, ISO14443A_LAST_BIT_NONE}}, - 40, + 5, 0, 0, - { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, }, + {0xF4, 0xAC, 0xF9, 0xD7, 0x76}, {} }; +static const iso14443_frame ATS_FRAME = { + TYPE_A, + {{STANDARD_FRAME, PARITY, ISO14443A_LAST_BIT_NONE}}, + 3, + 0, 0, + {0x08, 0xB6, 0xDD}, + {} +}; + +static const iso14443_frame NONCE_FRAME = { + TYPE_A, + {{STANDARD_FRAME, PARITY, ISO14443A_LAST_BIT_NONE}}, + 4, + 0, 0, + {0xFF, 0xCF, 0x80, 0xE3}, + {} +}; + + #define FRAME_SIZE(bytes) (2* (1+(9*bytes)+1) ) #define SIZED_BUFFER(bytes) struct { int len; u_int8_t data[FRAME_SIZE(bytes)]; } -static SIZED_BUFFER(2) ATQA_BUFFER; -static SIZED_BUFFER(40) LONG_BUFFER; - -static ssc_dma_tx_buffer_t tx_buffer; +static ssc_dma_tx_buffer_t ATQA_BUFFER, UID_BUFFER, ATS_BUFFER, NONCE_BUFFER; static void fast_receive_callback(ssc_dma_rx_buffer_t *buffer, u_int8_t in_irq) { @@ -75,18 +88,22 @@ static void fast_receive_callback(ssc_dma_rx_buffer_t *buffer, u_int8_t in_irq) unsigned int buffy=0; u_int32_t cv = *AT91C_TC2_CV; - const iso14443_frame *tx_frame = NULL; + ssc_dma_tx_buffer_t *tx_buffer=NULL; int fdt = 0; switch(buffer->len_transfers) { case 3: case 4: /* REQA (7 bits) */ - case 7: case 8: case 9: - tx_frame = &ATQA_FRAME; + //case 7: case 8: case 9: + tx_buffer = &ATQA_BUFFER; fdt = 1172; break; - //case 6: case 7: /* ANTICOL (2 bytes) */ - case 22: /* SELECT (9 bytes) */ - + case 6: case 7: /* ANTICOL (2 bytes) */ + case 8: case 9: + tx_buffer = &UID_BUFFER; + fdt = 1172; + case 21: case 22: /* SELECT (9 bytes) */ + tx_buffer = &ATS_BUFFER; + fdt = 1172; break; case 577: usb_print_string_f("f", 0); @@ -99,31 +116,11 @@ static void fast_receive_callback(ssc_dma_rx_buffer_t *buffer, u_int8_t in_irq) fdt += fdt_offset; - int ret = 0; - if(tx_frame != NULL) { - - tx_buffer.source = (void*)tx_frame; - if(tx_frame == &ATQA_FRAME) { - memcpy(tx_buffer.data, ATQA_BUFFER.data, ATQA_BUFFER.len); - ret = tx_buffer.len = ATQA_BUFFER.len; - } else if(tx_frame == &LONG_FRAME) { - memcpy(tx_buffer.data, LONG_BUFFER.data, LONG_BUFFER.len); - ret = tx_buffer.len = LONG_BUFFER.len; - } else { - tx_buffer.len = sizeof(tx_buffer.data); - ret = manchester_encode(tx_buffer.data, - tx_buffer.len, - tx_frame); + if(tx_buffer != NULL) { + tx_buffer->state = FULL; + if( iso14443_transmit(tx_buffer, fdt, 1, 0) < 0) { + usb_print_string_f("Tx failed ", 0); } - if(ret >= 0) { - tx_buffer.state = FULL; - tx_buffer.len = ret; - if( iso14443_transmit(&tx_buffer, fdt, 1, 0) < 0) { - tx_buffer.state = FREE; - usb_print_string_f("Tx failed ", 0); - } - } else tx_buffer.state = FREE; - } u_int32_t cv2 = *AT91C_TC2_CV; @@ -131,10 +128,6 @@ static void fast_receive_callback(ssc_dma_rx_buffer_t *buffer, u_int8_t in_irq) DumpUIntToUSB(cv); DumpStringToUSB(":"); DumpUIntToUSB(cv2); - if(ret<0) { - DumpStringToUSB("!"); - DumpUIntToUSB(-ret); - } if(buffy!=0) { DumpStringToUSB("ยง"); DumpUIntToUSB(buffy); @@ -161,9 +154,17 @@ void iso14443a_pretender (void *pvParameters) vTaskDelay(1*portTICK_RATE_MS); } - ATQA_BUFFER.len = manchester_encode(ATQA_BUFFER.data, sizeof(ATQA_BUFFER.data), &ATQA_FRAME); - LONG_BUFFER.len = manchester_encode(LONG_BUFFER.data, sizeof(LONG_BUFFER.data), &LONG_FRAME); - if(ATQA_BUFFER.len < 0 || LONG_BUFFER.len < 0) { + int ret; +#define PREFILL_BUFFER(dst, src) ret = manchester_encode(dst.data, sizeof(dst.data), &src); \ + if(ret < 0) goto prefill_failed; else dst.len = ret; + + PREFILL_BUFFER(ATQA_BUFFER, ATQA_FRAME); + PREFILL_BUFFER(UID_BUFFER, UID_FRAME); + PREFILL_BUFFER(ATS_BUFFER, ATS_FRAME); + PREFILL_BUFFER(NONCE_BUFFER, NONCE_FRAME); + + if(0) { +prefill_failed: usb_print_string("Buffer prefilling failed\n\r"); while(1) { for(i=1000; i<=3000; i++) { |