FIX: fastread dont do multiplication by zero, thanks @marshmellow42

[proxmark3-svn] / armsrc / iso14443a.c

diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index 8aa99d675ce56311a5cdf314133c6250b12f0282..9f2b6d9477d14764cf88a0c07f01f68d16b39974 100644 (file)
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -948,9 +948,6 @@ void SimulateIso14443aTag(int tagType, int flags, int uid_2nd, byte_t* data)
        uint8_t ar_nr_collected = 0;
        
        uint8_t sak;
-
-       uint8_t blockzeros[512];
-       memset(blockzeros, 0x00, sizeof(blockzeros));
                                        
        // PACK response to PWD AUTH for EV1/NTAG
        uint8_t response8[4];
@@ -1157,11 +1154,10 @@ void SimulateIso14443aTag(int tagType, int flags, int uid_2nd, byte_t* data)
                } else if(receivedCmd[0] == 0x30) {     // Received a (plain) READ
                        uint8_t block = receivedCmd[1];
                        if ( tagType == 7 ) {
+                               uint8_t start = 4 * block;
                                
                                if ( block < 4 ) {
                                    //NTAG 215
-                                       uint8_t start = 4 * block;
-                                       
                                        uint8_t blockdata[50] = {
                                        data[0],data[1],data[2], 0x88 ^ data[0] ^ data[1] ^ data[2],
                                        data[3],data[4],data[5],data[6],
@@ -1173,11 +1169,12 @@ void SimulateIso14443aTag(int tagType, int flags, int uid_2nd, byte_t* data)
                                        0x00,0x00,0x00,0x00,
                                        0x00,0x00};
                                        AppendCrc14443a(blockdata+start, 16);
-                                       
-                                       EmSendCmdEx( blockdata+start, 18, false);
-                               } else {                                
-                                       AppendCrc14443a(blockzeros, 16);
-                                       EmSendCmdEx(blockzeros,18,false);
+                                       EmSendCmdEx( blockdata+start, MAX_MIFARE_FRAME_SIZE, false);
+                               } else {        
+                                       uint8_t emdata[MAX_MIFARE_FRAME_SIZE];
+                                       emlGetMemBt( emdata, start, 16);
+                                       AppendCrc14443a(emdata, 16);
+                                       EmSendCmdEx(emdata, sizeof(emdata), false);                             
                                }
                                p_response = NULL;
                                
@@ -1188,10 +1185,15 @@ void SimulateIso14443aTag(int tagType, int flags, int uid_2nd, byte_t* data)
                                p_response = NULL;
                        }
                } else if(receivedCmd[0] == 0x3A) {     // Received a FAST READ (ranged read) -- just returns all zeros.
-                               uint8_t len = (receivedCmd[2] - receivedCmd[1] ) * 4;                           
-                               AppendCrc14443a(blockzeros,len);
-                               EmSendCmdEx(blockzeros,len+2,false);                            
-                               p_response = NULL;                      
+                               
+                               uint8_t emdata[MAX_FRAME_SIZE];
+                               int start =  receivedCmd[1] * 4;
+                               int len   = (receivedCmd[2] - receivedCmd[1] + 1) * 4;
+                               emlGetMemBt( emdata, start, len);
+                               AppendCrc14443a(emdata, len);
+                               EmSendCmdEx(emdata, len+2, false);                              
+                               p_response = NULL;
+                               
                } else if(receivedCmd[0] == 0x3C && tagType == 7) {     // Received a READ SIGNATURE -- 
                                // ECC data,  taken from a NTAG215 amiibo token. might work. LEN: 32, + 2 crc
                                uint8_t data[] = {0x56,0x06,0xa6,0x4f,0x43,0x32,0x53,0x6f,
@@ -1199,14 +1201,23 @@ void SimulateIso14443aTag(int tagType, int flags, int uid_2nd, byte_t* data)
                                                                  0xcf,0xd3,0x61,0x36,0xca,0x5f,0xbb,0x05,
                                                                  0xce,0x21,0x24,0x5b,0xa6,0x7a,0x79,0x07,
                                                                  0x00,0x00};
-                               AppendCrc14443a(data, sizeof(data));
-                               EmSendCmdEx(data,sizeof(data),false);                           
+                               AppendCrc14443a(data, sizeof(data)-2);
+                               EmSendCmdEx(data,sizeof(data),false);
                                p_response = NULL;                                      
                } else if(receivedCmd[0] == 0x39 && tagType == 7) {     // Received a READ COUNTER -- 
                                uint8_t data[] =  {0x00,0x00,0x00,0x14,0xa5};
-                               //AppendCrc14443a(data, sizeof(data));
                                EmSendCmdEx(data,sizeof(data),false);                           
                                p_response = NULL;
+               } else if(receivedCmd[0] == 0xA5 && tagType == 7) {     // Received a INC COUNTER -- 
+                       // number of counter
+                       //uint8_t counter = receivedCmd[1];
+                       //uint32_t val = bytes_to_num(receivedCmd+2,4);
+                       
+                       // send ACK
+                       uint8_t ack[] = {0x0a};
+                       EmSendCmdEx(ack,sizeof(ack),false);
+                       p_response = NULL;
+                       
                } else if(receivedCmd[0] == 0x3E && tagType == 7) {     // Received a CHECK_TEARING_EVENT -- 
                                p_response = &responses[9];                             
                } else if(receivedCmd[0] == 0x50) {     // Received a HALT
@@ -1280,6 +1291,8 @@ void SimulateIso14443aTag(int tagType, int flags, int uid_2nd, byte_t* data)
                {
                        if ( tagType == 7 ) {
                                p_response =  &responses[8]; // PACK response
+                               uint32_t pwd = bytes_to_num(receivedCmd+1,4);
+                               Dbprintf("Auth attempt: %08x", pwd);    
                        }
                }
                else {