#include "iso14443crc.h"
#include "protocols.h"
-#define TOPAZ_STATIC_MEMORY (0x0f * 8)
+#define TOPAZ_STATIC_MEMORY (0x0f * 8) // 15 blocks with 8 Bytes each
+// a struct to describe a memory area which contains lock bits and the corresponding lockable memory area
typedef struct dynamic_lock_area {
struct dynamic_lock_area *next;
- uint16_t byte_offset;
+ uint16_t byte_offset; // the address of the lock bits
uint16_t size_in_bits;
- uint16_t first_locked_byte;
+ uint16_t first_locked_byte; // the address of the lockable area
uint16_t bytes_locked_per_bit;
} dynamic_lock_area_t;
static struct {
uint8_t HR01[2];
uint8_t uid[7];
- uint8_t size;
- uint8_t data_blocks[TOPAZ_STATIC_MEMORY/8][8];
- dynamic_lock_area_t *dynamic_lock_areas;
- uint8_t *dynamic_reserved_areas;
- uint8_t *dynamic_memory;
+ uint16_t size;
+ uint8_t data_blocks[TOPAZ_STATIC_MEMORY/8][8]; // this memory is always there
+ uint8_t *dynamic_memory; // this memory can be there
+ dynamic_lock_area_t *dynamic_lock_areas; // lock area descriptors
} topaz_tag;
}
+// send a raw topaz command, returns the length of the response (0 in case of error)
static int topaz_send_cmd_raw(uint8_t *cmd, uint8_t len, uint8_t *response)
{
UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_RAW | ISO14A_NO_DISCONNECT | ISO14A_TOPAZMODE, len, 0}};
}
+// calculate CRC bytes and send topaz command, returns the length of the response (0 in case of error)
static int topaz_send_cmd(uint8_t *cmd, uint8_t len, uint8_t *response)
{
if (len > 1) {
}
+// select a topaz tag. Send WUPA and RID.
static int topaz_select(uint8_t *atqa, uint8_t *rid_response)
{
// ToDo: implement anticollision
}
+// read all of the static memory of a selected Topaz tag.
static int topaz_rall(uint8_t *uid, uint8_t *response)
{
uint8_t rall_cmd[] = {TOPAZ_RALL, 0, 0, 0, 0, 0, 0, 0, 0};
}
+// read a block (8 Bytes) of a selected Topaz tag.
+static int topaz_read_block(uint8_t *uid, uint8_t blockno, uint8_t *block_data)
+{
+ uint8_t read8_cmd[] = {TOPAZ_READ8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+ uint8_t read8_response[11];
+
+ read8_cmd[1] = blockno;
+ memcpy(&read8_cmd[10], uid, 4);
+ if (!topaz_send_cmd(read8_cmd, sizeof(read8_cmd), read8_response)) {
+ topaz_switch_off_field();
+ return -1; // READ8 failed
+ }
+
+ memcpy(block_data, &read8_response[1], 8);
+
+ return 0;
+}
+
+
+// read a segment (16 blocks = 128 Bytes) of a selected Topaz tag. Works only for tags with dynamic memory.
+static int topaz_read_segment(uint8_t *uid, uint8_t segno, uint8_t *segment_data)
+{
+ uint8_t rseg_cmd[] = {TOPAZ_RSEG, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+ uint8_t rseg_response[131];
+
+ rseg_cmd[1] = segno << 4;
+ memcpy(&rseg_cmd[10], uid, 4);
+ if (!topaz_send_cmd(rseg_cmd, sizeof(rseg_cmd), rseg_response)) {
+ topaz_switch_off_field();
+ return -1; // RSEG failed
+ }
+
+ memcpy(segment_data, &rseg_response[1], 128);
+
+ return 0;
+}
+
+
+// search for the lock area descriptor for the lockable area including byteno
static dynamic_lock_area_t *get_dynamic_lock_area(uint16_t byteno)
{
dynamic_lock_area_t *lock_area;
}
-// check if a memory block (8 Bytes) is locked.
-// TODO: support other sizes of locked_bytes_per_bit (current assumption: each lock bit locks 8 Bytes)
+// check if a memory byte is locked.
static bool topaz_byte_is_locked(uint16_t byteno)
{
uint8_t *lockbits;
lock_area = get_dynamic_lock_area(byteno);
if (lock_area == NULL) {
return false;
+ } else {
+ lockbits = &topaz_tag.dynamic_memory[lock_area->byte_offset - TOPAZ_STATIC_MEMORY];
+ locked_bytes_per_bit = lock_area->bytes_locked_per_bit;
+ byteno = byteno - lock_area->first_locked_byte;
}
- locked_bytes_per_bit = lock_area->bytes_locked_per_bit;
- byteno = byteno - lock_area->first_locked_byte;
- lockbits = &topaz_tag.dynamic_memory[lock_area->byte_offset - TOPAZ_STATIC_MEMORY];
}
uint16_t blockno = byteno / locked_bytes_per_bit;
- if(lockbits[blockno/8] >> (blockno % 8) & 0x01) {
+ if(lockbits[blockno/8] & (0x01 << (blockno % 8))) {
return true;
} else {
return false;
}
+// read and print the Capability Container
static int topaz_print_CC(uint8_t *data)
{
if(data[0] != 0xe1) {
+ topaz_tag.size = TOPAZ_STATIC_MEMORY;
return -1; // no NDEF message
}
PrintAndLog(" %02x: NDEF Magic Number", data[0]);
PrintAndLog(" %02x: version %d.%d supported by tag", data[1], (data[1] & 0xF0) >> 4, data[1] & 0x0f);
uint16_t memsize = (data[2] + 1) * 8;
+ topaz_tag.size = memsize;
topaz_tag.dynamic_memory = malloc(memsize - TOPAZ_STATIC_MEMORY);
PrintAndLog(" %02x: Physical Memory Size of this tag: %d bytes", data[2], memsize);
PrintAndLog(" %02x: %s / %s", data[3],
}
-static void get_TLV(uint8_t **TLV_ptr, uint8_t *tag, uint16_t *length, uint8_t **value)
+// return type, length and value of a TLV, starting at memory position *TLV_ptr
+static void get_TLV(uint8_t **TLV_ptr, uint8_t *TLV_type, uint16_t *TLV_length, uint8_t **TLV_value)
{
- *length = 0;
- *value = NULL;
+ *TLV_length = 0;
+ *TLV_value = NULL;
- *tag = **TLV_ptr;
+ *TLV_type = **TLV_ptr;
*TLV_ptr += 1;
- switch (*tag) {
+ switch (*TLV_type) {
case 0x00: // NULL TLV.
case 0xFE: // Terminator TLV.
break;
case 0x02: // Reserved Memory TLV
case 0x03: // NDEF message TLV
case 0xFD: // proprietary TLV
- *length = **TLV_ptr;
+ *TLV_length = **TLV_ptr;
*TLV_ptr += 1;
- if (*length == 0xff) {
- *length = **TLV_ptr << 8;
+ if (*TLV_length == 0xff) {
+ *TLV_length = **TLV_ptr << 8;
*TLV_ptr += 1;
- *length |= **TLV_ptr;
+ *TLV_length |= **TLV_ptr;
*TLV_ptr += 1;
}
- *value = *TLV_ptr;
- *TLV_ptr += *length;
+ *TLV_value = *TLV_ptr;
+ *TLV_ptr += *TLV_length;
break;
default: // RFU
break;
}
-static bool topaz_print_lock_control_TLVs(uint8_t *memory)
+// lock area TLVs contain no information on the start of the respective lockable area. Lockable areas
+// do not include the lock bits and reserved memory. We therefore need to adjust the start of the
+// respective lockable areas accordingly
+static void adjust_lock_areas(uint16_t block_start, uint16_t block_size)
+{
+ dynamic_lock_area_t *lock_area = topaz_tag.dynamic_lock_areas;
+ while (lock_area != NULL) {
+ if (lock_area->first_locked_byte <= block_start) {
+ lock_area->first_locked_byte += block_size;
+ }
+ lock_area = lock_area->next;
+ }
+}
+
+
+// read and print the lock area and reserved memory TLVs
+static void topaz_print_control_TLVs(uint8_t *memory)
{
uint8_t *TLV_ptr = memory;
- uint8_t tag = 0;
- uint16_t length;
- uint8_t *value;
+ uint8_t TLV_type = 0;
+ uint16_t TLV_length;
+ uint8_t *TLV_value;
bool lock_TLV_present = false;
- uint16_t first_locked_byte = 0x0f * 8;
+ bool reserved_memory_control_TLV_present = false;
+ uint16_t next_lockable_byte = 0x0f * 8; // first byte after static memory area
while(*TLV_ptr != 0x03 && *TLV_ptr != 0xFD && *TLV_ptr != 0xFE) {
// all Lock Control TLVs shall be present before the NDEF message TLV, the proprietary TLV (and the Terminator TLV)
- get_TLV(&TLV_ptr, &tag, &length, &value);
- if (tag == 0x01) { // the Lock Control TLV
- uint8_t pages_addr = value[0] >> 4;
- uint8_t byte_offset = value[0] & 0x0f;
- uint16_t size_in_bits = value[1] ? value[1] : 256;
- uint16_t bytes_per_page = 1 << (value[2] & 0x0f);
- uint16_t bytes_locked_per_bit = 1 << (value[2] >> 4);
+ get_TLV(&TLV_ptr, &TLV_type, &TLV_length, &TLV_value);
+ if (TLV_type == 0x01) { // a Lock Control TLV
+ uint8_t pages_addr = TLV_value[0] >> 4;
+ uint8_t byte_offset = TLV_value[0] & 0x0f;
+ uint16_t size_in_bits = TLV_value[1] ? TLV_value[1] : 256;
+ uint16_t size_in_bytes = (size_in_bits + 7)/8;
+ uint16_t bytes_per_page = 1 << (TLV_value[2] & 0x0f);
+ uint16_t bytes_locked_per_bit = 1 << (TLV_value[2] >> 4);
+ uint16_t area_start = pages_addr * bytes_per_page + byte_offset;
PrintAndLog("Lock Area of %d bits at byte offset 0x%04x. Each Lock Bit locks %d bytes.",
size_in_bits,
- pages_addr * bytes_per_page + byte_offset,
+ area_start,
bytes_locked_per_bit);
lock_TLV_present = true;
dynamic_lock_area_t *old = topaz_tag.dynamic_lock_areas;
new = old->next = (dynamic_lock_area_t *)malloc(sizeof(dynamic_lock_area_t));
}
new->next = NULL;
- new->first_locked_byte = first_locked_byte;
- new->byte_offset = pages_addr * bytes_per_page + byte_offset;
+ if (area_start <= next_lockable_byte) {
+ // lock areas are not lockable
+ next_lockable_byte += size_in_bytes;
+ }
+ new->first_locked_byte = next_lockable_byte;
+ new->byte_offset = area_start;
new->size_in_bits = size_in_bits;
new->bytes_locked_per_bit = bytes_locked_per_bit;
- first_locked_byte = first_locked_byte + size_in_bits*bytes_locked_per_bit;
+ next_lockable_byte += size_in_bits * bytes_locked_per_bit;
+ }
+ if (TLV_type == 0x02) { // a Reserved Memory Control TLV
+ uint8_t pages_addr = TLV_value[0] >> 4;
+ uint8_t byte_offset = TLV_value[0] & 0x0f;
+ uint8_t size_in_bytes = TLV_value[1] ? TLV_value[1] : 256;
+ uint8_t bytes_per_page = 1 << (TLV_value[2] & 0x0f);
+ uint16_t area_start = pages_addr * bytes_per_page + byte_offset;
+ PrintAndLog("Reserved Memory of %d bytes at byte offset 0x%02x.",
+ size_in_bytes,
+ area_start);
+ reserved_memory_control_TLV_present = true;
+ adjust_lock_areas(area_start, size_in_bytes); // reserved memory areas are not lockable
+ if (area_start <= next_lockable_byte) {
+ next_lockable_byte += size_in_bytes;
+ }
}
}
if (!lock_TLV_present) {
PrintAndLog("(No Lock Control TLV present)");
- return -1;
- } else {
- return 0;
}
+
+ if (!reserved_memory_control_TLV_present) {
+ PrintAndLog("(No Reserved Memory Control TLV present)");
+ }
}
-static int topaz_print_reserved_memory_control_TLVs(uint8_t *memory)
+// read all of the dynamic memory
+static int topaz_read_dynamic_data(void)
{
- uint8_t *TLV_ptr = memory;
- uint8_t tag = 0;
- uint16_t length;
- uint8_t *value;
- bool reserved_memory_control_TLV_present = false;
+ // first read the remaining block of segment 0
+ if(topaz_read_block(topaz_tag.uid, 0x0f, &topaz_tag.dynamic_memory[0]) == -1) {
+ PrintAndLog("Error while reading dynamic memory block %02x. Aborting...", 0x0f);
+ return -1;
+ }
- while(*TLV_ptr != 0x03 && *TLV_ptr != 0xFD && *TLV_ptr != 0xFE) {
- // all Reserved Memory Control TLVs shall be present before the NDEF message TLV, the proprietary TLV (and the Terminator TLV)
- get_TLV(&TLV_ptr, &tag, &length, &value);
- if (tag == 0x02) { // the Reserved Memory Control TLV
- uint8_t pages_addr = value[0] >> 4;
- uint8_t byte_offset = value[0] & 0x0f;
- uint8_t size_in_bytes = value[1] ? value[1] : 256;
- uint8_t bytes_per_page = 1 << (value[2] & 0x0f);
- PrintAndLog("Reserved Memory of %d bytes at byte offset 0x%02x.",
- size_in_bytes,
- pages_addr * bytes_per_page + byte_offset);
- reserved_memory_control_TLV_present = true;
+ // read the remaining segments
+ uint8_t max_segment = topaz_tag.size / 128 - 1;
+ for(uint8_t segment = 1; segment <= max_segment; segment++) {
+ if(topaz_read_segment(topaz_tag.uid, segment, &topaz_tag.dynamic_memory[(segment-1)*128+8]) == -1) {
+ PrintAndLog("Error while reading dynamic memory block %02x. Aborting...", 0x0f);
+ return -1;
}
}
- if (!reserved_memory_control_TLV_present) {
- PrintAndLog("(No Reserved Memory Control TLV present)");
- return -1;
- } else {
- return 0;
+ return 0;
+}
+
+
+// read and print the dynamic memory
+static void topaz_print_dynamic_data(void)
+{
+ if (topaz_tag.size > TOPAZ_STATIC_MEMORY) {
+ PrintAndLog("Dynamic Data blocks:");
+ if (topaz_read_dynamic_data() == 0) {
+ PrintAndLog("block# | offset | Data | Locked(y/n)");
+ char line[80];
+ for (uint16_t blockno = 0x0f; blockno < topaz_tag.size/8; blockno++) {
+ uint8_t *block_data = &topaz_tag.dynamic_memory[(blockno-0x0f)*8];
+ char lockbits[9];
+ for (uint16_t j = 0; j < 8; j++) {
+ sprintf(&line[3*j], "%02x ", block_data[j]);
+ lockbits[j] = topaz_byte_is_locked(blockno*8+j) ? 'y' : 'n';
+ }
+ lockbits[8] = '\0';
+ PrintAndLog(" 0x%02x | 0x%04x | %s| %-3s", blockno, blockno*8, line, lockbits);
+ }
+ }
}
}
static void topaz_print_lifecycle_state(uint8_t *data)
{
-
+ // to be done
}
static void topaz_print_NDEF(uint8_t *data)
{
-
+ // to be done.
}
-
+
+// read a Topaz tag and print some usefull information
int CmdHFTopazReader(const char *Cmd)
{
int status;
topaz_tag.uid[6],
getTagInfo(topaz_tag.uid[6]));
- memcpy(topaz_tag.data_blocks, rall_response+2, 0x10*8);
+ memcpy(topaz_tag.data_blocks, rall_response+2, 0x0f*8);
PrintAndLog("");
PrintAndLog("Static Data blocks 00 to 0c:");
PrintAndLog("block# | offset | Data | Locked(y/n)");
char line[80];
for (uint16_t i = 0; i <= 0x0c; i++) {
+ char lockbits[9];
for (uint16_t j = 0; j < 8; j++) {
sprintf(&line[3*j], "%02x ", topaz_tag.data_blocks[i][j] /*rall_response[2 + 8*i + j]*/);
+ lockbits[j] = topaz_byte_is_locked(i*8+j) ? 'y' : 'n';
}
- PrintAndLog(" 0x%02x | 0x%04x | %s| %-3s", i, i*8, line, topaz_byte_is_locked(i*8) ? "yyyyyyyy" : "nnnnnnnn");
+ lockbits[8] = '\0';
+ PrintAndLog(" 0x%02x | 0x%04x | %s| %-3s", i, i*8, line, lockbits);
}
PrintAndLog("");
status = topaz_print_CC(&topaz_tag.data_blocks[1][0]);
if (status == -1) {
- PrintAndLog("No NDEF message present");
+ PrintAndLog("No NDEF message data present");
topaz_switch_off_field();
return 0;
}
PrintAndLog("");
- bool lock_TLV_present = topaz_print_lock_control_TLVs(&topaz_tag.data_blocks[1][4]);
+ topaz_print_control_TLVs(&topaz_tag.data_blocks[1][4]);
PrintAndLog("");
- bool reserved_mem_present = topaz_print_reserved_memory_control_TLVs(&topaz_tag.data_blocks[1][4]);
-
+ topaz_print_dynamic_data();
+
topaz_print_lifecycle_state(&topaz_tag.data_blocks[1][0]);
topaz_print_NDEF(&topaz_tag.data_blocks[1][0]);
}
-int CmdHFTopazSim(const char *Cmd)
-{
- PrintAndLog("not yet implemented");
- return 0;
-}
-
-
int CmdHFTopazCmdRaw(const char *Cmd)
{
- PrintAndLog("not yet implemented");
+ PrintAndLog("not yet implemented. Use hf 14 raw with option -T.");
return 0;
}
{
{"help", CmdHelp, 1, "This help"},
{"reader", CmdHFTopazReader, 0, "Act like a Topaz reader"},
- {"sim", CmdHFTopazSim, 0, "<UID> -- Simulate Topaz tag"},
{"snoop", CmdHF14ASnoop, 0, "Eavesdrop a Topaz reader-tag communication"},
{"raw", CmdHFTopazCmdRaw, 0, "Send raw hex data to tag"},
{NULL, NULL, 0, NULL}
return 0;
}
+
static int CmdHelp(const char *Cmd)
{
CmdsHelp(CommandTable);
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