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add check to fread call

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marshmellow42 2016-02-14 11:07:16 -05:00
parent 098015eb75
commit 33c795d0bd
1 changed files with 5 additions and 1 deletions
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6
client/cmdhficlass.c
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@ -1046,7 +1046,11 @@ int CmdHFiClassCloneTag(const char *Cmd) {
// else we have to create a share memory
int i;
fseek(f,startblock*8,SEEK_SET);
fread(tag_data,sizeof(iclass_block_t),endblock - startblock + 1,f);
if ( fread(tag_data,sizeof(iclass_block_t),endblock - startblock + 1,f) == 0 ) {
PrintAndLog("File reading error.");
fclose(f);
return 2;
}
uint8_t MAC[4]={0x00,0x00,0x00,0x00};
uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};