FIX: 'data print' - now don't crash the client when demodbuffer is empty

[proxmark3-svn] / armsrc / mifarecmd.c

diff --git a/armsrc/mifarecmd.c b/armsrc/mifarecmd.c
index b933fc7bbff29e9992062a678b62d80991119da8..f906099cfd49150eca93c88f20848807fdbe4fe1 100644 (file)
--- a/armsrc/mifarecmd.c
+++ b/armsrc/mifarecmd.c
@@ -641,13 +641,17 @@ void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags,
        LED_A_ON();\r
        LED_C_OFF();\r
 \r
+       BigBuf_free(); BigBuf_Clear_ext(false); \r
+       clear_trace();\r
+       set_tracing(FALSE);\r
+       \r
        if (initialize) {\r
                iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);\r
-               clear_trace();\r
-               set_tracing(FALSE);\r
        }\r
+       \r
        LED_C_ON();\r
        \r
+       uint8_t dummy_answer = 0;       \r
        uint16_t num_nonces = 0;\r
        bool have_uid = false;\r
        for (uint16_t i = 0; i <= USB_CMD_DATA_SIZE - 9; ) {\r
@@ -698,7 +702,6 @@ void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags,
                }\r
        \r
                // send a dummy byte as reader response in order to trigger the cards authentication timeout\r
-               uint8_t dummy_answer = 0;\r
                ReaderTransmit(&dummy_answer, 1, NULL);\r
                timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;\r
                \r
@@ -727,7 +730,7 @@ void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags,
        if (field_off) {\r
                FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);\r
                LEDsoff();\r
-               //set_tracing(FALSE);\r
+               set_tracing(FALSE);\r
        }\r
 }\r
 \r