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fix mifare_classic_get_uid().

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This commit is contained in:
Romuald Conty 2010-01-08 16:34:43 +00:00
parent 75d7ba4adb
commit 24ef79eca4
1 changed files with 1 additions and 7 deletions
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8
libfreefare/mifare_classic.c
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@ -706,13 +706,7 @@ char*
mifare_classic_get_uid(MifareClassicTag tag) mifare_classic_get_uid(MifareClassicTag tag)
{ {
char* uid = malloc((4 * 2) + 1); char* uid = malloc((4 * 2) + 1);
for( uint8_t i = 0; i < 4; i++) { snprintf(uid, 9, "%02x%02x%02x%02x", tag->info.abtUid[0], tag->info.abtUid[1], tag->info.abtUid[2], tag->info.abtUid[3]);
unsigned char msb = (tag->info.abtUid[i] | 0xf0) >> 4;
unsigned char lsb = (tag->info.abtUid[i] | 0x0f);
uid[i] = msb < 9 ? msb + '0' : msb + 'a';
uid[i+1] = lsb < 9 ? lsb + '0' : lsb + 'a';
}
uid[8] = '\0'; uid[8] = '\0';
return uid; return uid;
} }