fix 'hf iclass writebl' and 'hf iclass clone' (#896)
[proxmark3-svn] / armsrc / iclass.c
index 2a819855f1e163f073a5c11db53545d1a06df81f..28cfcaa66c407bf5a54d3c47afe817be5ad1cd71 100644 (file)
@@ -848,6 +848,9 @@ void iClass_Dump(uint8_t startblock, uint8_t numblks) {
                }
        }
 
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+       LED_D_OFF();
+
        cmd_send(CMD_ACK, isOK, blkCnt, 0, readblockdata, blkCnt*8);
 
        LED_A_OFF();
@@ -863,12 +866,27 @@ static bool iClass_WriteBlock_ext(uint8_t blockNo, uint8_t *data) {
        bool isOK = false;
        uint32_t eof_time = 0;
 
-       isOK = sendCmdGetResponseWithRetries(write, sizeof(write), resp, sizeof(resp), 10, 10, 0, ICLASS_READER_TIMEOUT_UPDATE, &eof_time);
-       if (isOK && blockNo != 3 && blockNo != 4 && memcmp(write+2, resp, 8)) { // check response
-               isOK = false;
+       isOK = sendCmdGetResponseWithRetries(write, sizeof(write), resp, sizeof(resp), 10, 3, 0, ICLASS_READER_TIMEOUT_UPDATE, &eof_time);
+       if (!isOK) {
+               return false;
+       }
+       
+       uint8_t all_ff[8] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+       if (blockNo == 2) {
+               if (memcmp(data+4, resp, 4) || memcmp(data, resp+4, 4)) { // check response. e-purse update swaps first and second half
+                       return false;
+               }
+       } else if (blockNo == 3 || blockNo == 4) {
+               if (memcmp(all_ff, resp, 8)) { // check response. Key updates always return 0xffffffffffffffff
+                       return false;
+               }
+       } else {
+               if (memcmp(data, resp, 8)) { // check response. All other updates return unchanged data
+                       return false;
+               }
        }
 
-       return isOK;
+       return true;
 }
 
 
@@ -895,17 +913,16 @@ void iClass_Clone(uint8_t startblock, uint8_t endblock, uint8_t *data) {
 
        LED_A_ON();
 
-       int i;
        int written = 0;
        int total_blocks = (endblock - startblock) + 1;
 
-       for (i = 0; i < total_blocks; i++) {
+       for (uint8_t block = startblock; block <= endblock; block++) {
                // block number
-               if (iClass_WriteBlock_ext(i+startblock, data + (i*12))){
-                       Dbprintf("Write block [%02x] successful", i + startblock);
+               if (iClass_WriteBlock_ext(block, data + (block-startblock)*12)) {
+                       Dbprintf("Write block [%02x] successful", block);
                        written++;
                } else {
-                       Dbprintf("Write block [%02x] failed", i + startblock);
+                       Dbprintf("Write block [%02x] failed", block);
                }
        }
 
@@ -914,9 +931,10 @@ void iClass_Clone(uint8_t startblock, uint8_t endblock, uint8_t *data) {
        else
                Dbprintf("Clone incomplete");
 
-       cmd_send(CMD_ACK, 1, 0, 0, 0, 0);
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        LED_D_OFF();
 
+       cmd_send(CMD_ACK, 1, 0, 0, 0, 0);
+
        LED_A_OFF();
 }
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