void zuluCryptCheckInvalidKey( const char * device )
{
char * d ;
const char * c ;
int e = 0 ;
zuluCryptSecurityGainElevatedPrivileges() ;
/*
* zuluCryptEmptySlots() is defined in ../lib/empty_slots.c
*/
d = zuluCryptEmptySlots( device ) ;
zuluCryptSecurityDropElevatedPrivileges() ;
if( d == NULL ){
/*
* we got here because the volume is either not luks based or the path is invalid
*/
;
}else{
c = d - 1 ;
while( *++c ){
if( *c == '2' ){
fprintf( stderr,"WARNING: key slot number: %d is corrupted\n",e ) ;
}
e++ ;
}
free( d ) ;
}
}
/*
* Its not possible to add more keys to a volume with no empty slots or to a non luks volume
*
* This function checks if a volume is luks and if it has atleast one empty slot.
*/
static int _zuluCryptCheckEmptySlots( const char * device )
{
int status = 0 ;
char * c ;
char * d ;
zuluCryptSecurityGainElevatedPrivileges() ;
/*
* zuluCryptEmptySlots() is defined in ../lib/empty_slots.c
*/
c = zuluCryptEmptySlots( device ) ;
zuluCryptSecurityDropElevatedPrivileges() ;
if( c == NULL ){
/*
* we got here because the volume is either not luks based or the path is invalid
*/
status = 1 ;
}else{
d = c - 1 ;
while( *++d ){
if( *d == '0' ){
status = 2 ;
break ;
}
}
free( c ) ;
}
return status ;
}
static int _zuluCryptExECheckEmptySlots( const char * device )
{
int status = 0 ;
char * c ;
char * d ;
zuluCryptSecurityGainElevatedPrivileges() ;
c = zuluCryptEmptySlots( device ) ;
zuluCryptSecurityDropElevatedPrivileges() ;
if( c == NULL ){
return 1 ;
}
d = c - 1 ;
while( *++d ){
if( *d == '3' ){
status = 3 ;
break ;
}
}
StringFree( c ) ;
return status ;
}
/*
* Its not possible to add more keys to a volume with no empty slots or to a non luks volume
*
* This function checks if a volume is luks and if it has atleast one empty slot.
*/
static int _zuluCryptCheckEmptySlots( const char * device )
{
int r = 0 ;
char * c ;
char * d ;
zuluCryptSecurityGainElevatedPrivileges() ;
/*
* zuluCryptVolumeIsLuks() is defined in ../lib/is_luks.c
*/
if( zuluCryptVolumeIsLuks( device ) ){
/*
* zuluCryptEmptySlots() is defined in ../lib/empty_slots.c
*/
c = zuluCryptEmptySlots( device ) ;
if( c == NULL ){
/*
* we shouldnt get here
*/
r = 1 ;
}else{
d = c - 1 ;
while( *++d ){
if( *d == '0' ){
r = 2 ;
break ;
}
}
StringFree( c ) ;
}
}else{
/*
* volume is not a LUKS volume,assuming its a TrueCrypt volume
*/
r = 2 ;
}
zuluCryptSecurityDropElevatedPrivileges() ;
return r ;
}
