Add desfire reading

inc/crc32.h

@@ -0,0 +1,8 @@
+#ifndef CRC32_H_I5S4G2OH
+#define CRC32_H_I5S4G2OH
+
+#include <stdint.h>
+
+uint32_t crc32(uint8_t *buffer, uint16_t len);
+
+#endif /* end of include guard: CRC32_H_I5S4G2OH */

inc/crc8.h

@@ -0,0 +1,6 @@
+#ifndef CRC8_H_2PZB4QST
+#define CRC8_H_2PZB4QST
+
+unsigned char crc8(const unsigned char * data, const unsigned int size);
+
+#endif /* end of include guard: CRC8_H_2PZB4QST */

src/crc32.c

@@ -0,0 +1,85 @@
+// https://gist.github.com/xobs/91a84d29152161e973d717b9be84c4d0
+
+#include <stdint.h>
+
+static const unsigned int crc_table[256] = {
+	0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
+	0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
+	0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
+	0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
+	0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
+	0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
+	0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
+	0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
+	0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
+	0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
+	0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
+	0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
+	0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
+	0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
+	0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
+	0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
+	0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
+	0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
+	0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
+	0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
+	0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
+	0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
+	0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
+	0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
+	0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
+	0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
+	0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
+	0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
+	0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
+	0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
+	0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
+	0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
+	0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
+	0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
+	0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
+	0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
+	0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
+	0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
+	0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
+	0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
+	0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
+	0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
+	0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
+	0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
+	0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
+	0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
+	0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
+	0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
+	0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
+	0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
+	0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
+	0x2d02ef8dL
+};
+
+#define DO1(buf) crc = crc_table[((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8);
+#define DO2(buf)  \
+	DO1(buf); \
+	DO1(buf);
+#define DO4(buf)  \
+	DO2(buf); \
+	DO2(buf);
+#define DO8(buf)  \
+	DO4(buf); \
+	DO4(buf);
+
+uint32_t crc32(uint8_t *buffer, uint16_t len)
+{
+	uint32_t crc;
+	crc = 0;
+	crc = crc ^ 0xffffffffL;
+	while (len >= 8) {
+		DO8(buffer);
+		len -= 8;
+	}
+	if (len)
+		do {
+			DO1(buffer);
+		} while (--len);
+	return crc;
+}

src/crc8.c

@@ -0,0 +1,18 @@
+#include "crc8.h"
+
+unsigned char crc8(const unsigned char * data, const unsigned int size)
+{
+    unsigned char crc = 0;
+    for ( unsigned int i = 0; i < size; ++i )
+    {
+        unsigned char inbyte = data[i];
+        for ( unsigned char j = 0; j < 8; ++j )
+        {
+            unsigned char mix = (crc ^ inbyte) & 0x01;
+            crc >>= 1;
+            if ( mix ) crc ^= 0x8C;
+            inbyte >>= 1;
+        }
+    }
+    return crc;
+}

src/cvend.c

@@ -1,7 +1,10 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
+#include "crc8.h"
+#include "crc32.h"
 
 int last_seq = 0;
 
@@ -40,6 +43,8 @@ enum message_type {
 	MTYPE_SAM_CTRL = 0xb6,
 	MTYPE_SAM_CTRL_REPLY = 0xb7,
 	MTYPE_DESFIRE_READ = 0xb9,
+	MTYPE_DESFIRE_INTERACT = 0xbc,
+	MTYPE_DESFIRE_INTERACT_REPLY = 0xbd,
 	MTYPE_UNHANDLED_CARD = 0xbe,
 	MTYPE_EMV = 0xd0,
 	MTYPE_EMV_STATUS = 0xd1,
@@ -50,6 +55,21 @@ enum message_type {
 	MTYPE_LOG = 0xed
 };
 
+enum card_type {
+	CTYPE_VDV_KA = 0x04,
+	CTYPE_MIFARE_CLASSIC = 0x05,
+	CTYPE_ISO = 0x06,
+	CTYPE_DESFIRE = 0x07,
+	CTYPE_GIROGO = 0x08,
+	CTYPE_ITSO = 0x09,
+	CTYPE_ULTRALIGHT_C = 0x0a
+};
+
+enum function_status {
+	FUNC_DISABLE = 0x00,
+	FUNC_ENABLE = 0x01
+};
+
 const char *stringify_msg_type(uint8_t msg_type)
 {
 	switch (msg_type) {
@@ -135,6 +155,10 @@ const char *stringify_msg_type(uint8_t msg_type)
 		return "MTYPE_SECURITY_SERVICES";
 	case MTYPE_SECURITY_SERVICES_REPLY:
 		return "MTYPE_SECURITY_SERVICES_REPLY";
+	case MTYPE_DESFIRE_INTERACT:
+		return "MTYPE_DESFIRE_INTERACT";
+	case MTYPE_DESFIRE_INTERACT_REPLY:
+		return "MTYPE_DESFIRE_INTERACT_REPLY";
 	case MTYPE_LOG:
 		return "MTYPE_LOG";
 	default:
@@ -153,12 +177,47 @@ typedef struct cvend_packet {
 	uint32_t msg_crc;
 } cvend_packet;
 
+void calc_hdr_crc(cvend_packet *packet)
+{
+	packet->magic = 0xbc;
+	packet->msg_len = (packet->msg_len << 8) + (packet->msg_len >> 8);
+	packet->hdr_crc = crc8((uint8_t *)packet, 6);
+	packet->msg_len = (packet->msg_len << 8) + (packet->msg_len >> 8);
+}
+
+void calc_msg_crc(cvend_packet *packet)
+{
+	if (packet->msg_type & 0x80)
+		packet->msg_crc = crc32(packet->msg_data, packet->msg_len);
+	else
+		packet->msg_crc = 0;
+}
+
+void print_packet(cvend_packet *packet) {
+	printf("seq      = %u\n", packet->seq);
+	printf("flags    = %x\n", packet->flags);
+	printf("msg_type = %s", stringify_msg_type(packet->msg_type));
+	printf(" (%02X)\n", packet->msg_type);
+	printf("msg_len  = %u\n", packet->msg_len);
+	printf("hdr_crc  = %u\n", packet->hdr_crc);
+	printf("msg_data = ");
+	if (packet->msg_type == MTYPE_LOG) {
+		printf("%s", packet->msg_data);
+	} else {
+		for (uint16_t i = 0; i < packet->msg_len; i++)
+			printf("%02x ", packet->msg_data[i]);
+	}
+	printf("\n");
+	printf("msg_crc  = %u\n\n", packet->msg_crc);
+}
+
 cvend_packet *cvend_read(FILE *file)
 {
 	uint8_t buf;
 	fread(&buf, 1, 1, file);
 	if (buf != 0xbc) {
 		printf("failed: %x\n", buf);
+		exit(1);
 		return NULL;
 	}
 
@@ -166,13 +225,12 @@ cvend_packet *cvend_read(FILE *file)
 	fread(&packet->seq, 1, 1, file);
 	fread(&packet->flags, 1, 1, file);
 	fread(&packet->msg_type, 1, 1, file);
-	fread(&packet->msg_len + 1, 1, 1, file);
+	fread((uint8_t *)&packet->msg_len + 1, 1, 1, file);
 	fread(&packet->msg_len, 1, 1, file);
 	fread(&packet->hdr_crc, 1, 1, file);
 
-	packet->msg_data = malloc(packet->msg_len + 1);
+	packet->msg_data = malloc(packet->msg_len);
 	fread(packet->msg_data, 1, packet->msg_len, file);
-	packet->msg_data[packet->msg_len] = '\0';
 	if (packet->msg_type & 0x80)
 		fread(&packet->msg_crc, 1, 4, file);
 	else
@@ -181,8 +239,30 @@ cvend_packet *cvend_read(FILE *file)
 	return packet;
 }
 
-void cvend_send(uint8_t msg_type, uint8_t *msg_data, uint16_t msg_size)
+void cvend_write(FILE *file, uint8_t msg_type, uint8_t *msg_data, uint16_t msg_len)
 {
+	cvend_packet packet;
+	packet.seq = ++last_seq;
+	packet.flags = 0;
+	packet.msg_type = msg_type;
+	packet.msg_data = msg_data;
+	packet.msg_len = msg_len;
+	calc_hdr_crc(&packet);
+	calc_msg_crc(&packet);
+
+	fwrite(&packet.magic, 1, 1, file);
+	fwrite(&packet.seq, 1, 1, file);
+	fwrite(&packet.flags, 1, 1, file);
+	fwrite(&packet.msg_type, 1, 1, file);
+	fwrite((uint8_t *)&packet.msg_len + 1, 1, 1, file);
+	fwrite(&packet.msg_len, 1, 1, file);
+	fwrite(&packet.hdr_crc, 1, 1, file);
+	fwrite(packet.msg_data, 1, packet.msg_len, file);
+	if (packet.msg_type & 0x80)
+		fwrite(&packet.msg_crc, 1, 4, file);
+
+	fflush(file);
+	print_packet(&packet);
 }
 
 void cvend_free(cvend_packet *packet)
@@ -191,62 +271,45 @@ void cvend_free(cvend_packet *packet)
 	free(packet);
 }
 
-unsigned char dallas_crc8(const unsigned char * data, const unsigned int size)
-{
-    unsigned char crc = 0;
-    for ( unsigned int i = 0; i < size; ++i )
-    {
-        unsigned char inbyte = data[i];
-        for ( unsigned char j = 0; j < 8; ++j )
-        {
-            unsigned char mix = (crc ^ inbyte) & 0x01;
-            crc >>= 1;
-            if ( mix ) crc ^= 0x8C;
-            inbyte >>= 1;
-        }
-    }
-    return crc;
-}
-
-void calc_hdr_crc(cvend_packet *packet)
-{
-	packet->magic = 0xbc;
-	packet->msg_len = (packet->msg_len << 8) + (packet->msg_len >> 8);
-	packet->hdr_crc = dallas_crc8((uint8_t *) packet, 6);
-	packet->msg_len = (packet->msg_len << 8) + (packet->msg_len >> 8);
-}
-
 int main(int argc, char *argv[])
 {
-	cvend_packet crc_packet;
+	FILE *file = fopen(argc > 1 ? argv[1] : "/dev/ttymxc3", "w+");
-	crc_packet.seq = 131;
+	uint8_t desfire_enable[] = { 0x00, CTYPE_DESFIRE, 0x01, FUNC_ENABLE };
-	crc_packet.flags = 0;
+	uint8_t desfire_get_version[] = { 0x60 };
-	crc_packet.msg_type = MTYPE_UNHANDLED_CARD;
+	uint8_t desfire_select_application[] = { 0x5a, 0xF2, 0x10, 0xE0 };
-	crc_packet.msg_len = 41;
+	uint8_t desfire_fid_list[] = { 0xf5, 0x00 };
+	uint8_t desfire_read[] = { 0xbd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+	uint8_t desfire_free[] = { 0x6e };
 
-	printf("new_crc  = %d\n", crc_packet.hdr_crc);
+	cvend_write(file, MTYPE_PROX_CARD_FUNCTION, desfire_enable, 4);
 
-	FILE *file = fopen(argc > 1 ? argv[1] : "/dev/ttymxc3", "r");
 	while (1) {
 		cvend_packet *packet;
 		do {
 			packet = cvend_read(file);
 		} while (!packet);
 
-		printf("\n");
+		if (packet->msg_type != MTYPE_HEARTBEAT)
-		printf("seq      = %u\n", packet->seq);
+			print_packet(packet);
-		printf("flags    = %x\n", packet->flags);
+
-		printf("msg_type = %s\n", stringify_msg_type(packet->msg_type));
+		if (packet->msg_type == MTYPE_DESFIRE_READ) {
-		printf("msg_len  = %u\n", packet->msg_len);
+			//cvend_write(file, MTYPE_DESFIRE_INTERACT, desfire_get_version, 1);
-		printf("hdr_crc  = %u\n", packet->hdr_crc);
+			cvend_write(file, MTYPE_DESFIRE_INTERACT, desfire_select_application, 4);
-		printf("msg_data = ");
+			cvend_packet *response;
-		for (uint16_t i = 0; i < packet->msg_len; i++)
+			do {
-			printf("%02x ", packet->msg_data[i]);
+				response = cvend_read(file);
-		printf("\n");
+			} while (!response);
-		printf("msg_crc  = %u\n\n", packet->msg_crc);
+			print_packet(response);
+			cvend_write(file, MTYPE_DESFIRE_INTERACT, desfire_fid_list, 1);
+			cvend_free(response);
+			cvend_write(file, MTYPE_DESFIRE_INTERACT, desfire_read, 8);
+			cvend_write(file, MTYPE_DESFIRE_INTERACT, desfire_free, 1);
+		}
 
 		cvend_free(packet);
 	}
 	fclose(file);
 	return 0;
 }
+
+