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factorize some code in examples/mifare-classic-write-ndef

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This commit is contained in:
Romuald Conty 2010-06-29 15:16:35 +00:00
parent ed69f90056
commit 97edcb45e8
1 changed files with 31 additions and 16 deletions
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47
examples/mifare-classic-write-ndef.c
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@ -28,6 +28,14 @@
#define MIN(a,b) ((a < b) ? a: b) #define MIN(a,b) ((a < b) ? a: b)
/*
* This define is used to convert ( SectorNumber, BlockOffset ) couple in
* BlockNumber
* e.g. If you want 4th block in sector 0x01 (trailer block of 0x01):
* BLOCK(0x01, 3) will return 0x07.
*/
#define BLOCK( S, B ) ( ( S < 32 )?( ( S * 4 ) + B ):( ( 32 * 4 ) + ( ( ( S - 32 ) * 16 ) + B ) ) )
MifareClassicKey default_keys[] = { MifareClassicKey default_keys[] = {
{ 0xff,0xff,0xff,0xff,0xff,0xff }, { 0xff,0xff,0xff,0xff,0xff,0xff },
{ 0xd3,0xf7,0xd3,0xf7,0xd3,0xf7 }, { 0xd3,0xf7,0xd3,0xf7,0xd3,0xf7 },
@ -89,6 +97,27 @@ search_sector_key (MifareTag tag, MifareClassicBlockNumber block, MifareClassicK
return 0; return 0;
} }
int
fix_mad_trailer_block (MifareTag tag, MifareSectorNumber sector, MifareClassicKey key, MifareClassicKeyType key_type)
{
MifareClassicBlock block;
mifare_classic_trailer_block (&block, mad_key_a, 0x0, 0x1, 0x1, 0x6, 0x00, default_keyb);
if (mifare_classic_authenticate (tag, BLOCK( sector, 0 ), key, key_type) < 0) {
perror ("mifare_classic_authenticate");
return -1;
}
/*
* WARN: Using BLOCK( sector, 3 ) selects trailer block only for sector <
* 32. In actual case, this is not a problem: we only call this function
* for sector 0x00 (0) and 0x10 (16).
*/
if (mifare_classic_write (tag, BLOCK( sector, 3 ), block) < 0) {
perror ("mifare_classic_write");
return -1;
}
return 0;
}
int int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
@ -157,14 +186,7 @@ main(int argc, char *argv[])
switch (freefare_get_tag_type (tags[i])) { switch (freefare_get_tag_type (tags[i])) {
case CLASSIC_4K: case CLASSIC_4K:
if (key_10_type != MFC_KEY_B) { if (key_10_type != MFC_KEY_B) {
mifare_classic_trailer_block (&block, mad_key_a, 0x0, 0x1, 0x1, 0x6, 0x00, default_keyb); if( 0 != fix_mad_trailer_block( tags[i], 0x40, key_10, key_10_type )) {
if (mifare_classic_authenticate (tags[i], 0x40, key_10, key_10_type) < 0) {
perror ("mifare_classic_authenticate");
error = 1;
goto error;
}
if (mifare_classic_write (tags[i], 0x43, block) < 0) {
perror ("mifare_classic_write");
error = 1; error = 1;
goto error; goto error;
} }
@ -173,14 +195,7 @@ main(int argc, char *argv[])
} }
case CLASSIC_1K: case CLASSIC_1K:
if (key_00_type != MFC_KEY_B) { if (key_00_type != MFC_KEY_B) {
mifare_classic_trailer_block (&block, mad_key_a, 0x0, 0x1, 0x1, 0x6, 0x00, default_keyb); if( 0 != fix_mad_trailer_block( tags[i], 0x00, key_00, key_00_type )) {
if (mifare_classic_authenticate (tags[i], 0x00, key_00, key_00_type) < 0) {
perror ("mifare_classic_authenticate");
error = 1;
goto error;
}
if (mifare_classic_write (tags[i], 0x03, block) < 0) {
perror ("mifare_classic_write");
error = 1; error = 1;
goto error; goto error;
} }