static int _create_volume( const char * dev,const char * fs,const char * type,const char * pass,size_t pass_size,const char * rng )
{
size_t len ;
int status ;
string_t m = StringVoid ;
const char * device_mapper ;
const char * mapper ;
if ( zuluCryptPathIsNotValid( dev ) ){
return 1 ;
}
m = String( crypt_get_dir() ) ;
len = StringLength( m ) ;
StringAppend( m,"/zuluCrypt-" ) ;
device_mapper = StringAppendInt( m,syscall( SYS_gettid ) ) ;
mapper = device_mapper + len + 1 ;
if( StringsAreEqual( type,"luks" ) ){
if( StringsAreNotEqual( rng,"/dev/random" ) ){
if( StringsAreNotEqual( rng,"/dev/urandom" ) ){
return zuluExit( 2,m ) ;
}
}
if( zuluCryptCreateLuks( dev,pass,pass_size,rng ) != 0 ){
return zuluExit( 3,m ) ;
}
if( zuluCryptOpenLuks( dev,mapper,"rw",pass,pass_size ) != 0 ){
return zuluExit( 3,m ) ;
}
}else if( StringsAreEqual( type,"plain") ){
if( zuluCryptOpenPlain( dev,mapper,"rw",pass,pass_size ) != 0 ){
return zuluExit( 3,m ) ;
}
}else{
return zuluExit( 2,m ) ;
}
status = zuluCryptCreateFileSystemInAVolume( fs,device_mapper ) ;
/*
* zuluCryptCloseMapper() is defined in close_mapper.c
*/
zuluCryptCloseMapper( device_mapper );
if( status == 0 ){
return zuluExit( 0,m ) ;
}else{
return zuluExit( 3,m ) ;
}
}
int zuluCryptCloseVolume( const char * map,char ** mount_point )
{
int i = zuluCryptUnmountVolume( map,mount_point ) ;
if( i == 0 || i == 3 ){
if( zuluCryptCloseMapper( map ) == 0 ){
return 0 ;
}else{
return 5 ;
}
}else{
return i ;
}
}
static int _create_file_system( const char * device,const char * fs,int key_source,
const char * key,size_t key_len,int volume_type )
{
string_t m = StringVoid ;
int r ;
const char * device_mapper ;
const char * mapper ;
size_t len ;
m = String( crypt_get_dir() ) ;
len = StringLength( m ) ;
StringAppend( m,"/zuluCrypt-" ) ;
device_mapper = StringAppendInt( m,syscall( SYS_gettid ) ) ;
mapper = device_mapper + len + 1 ;
/*
* zuluCryptOpenTcrypt() is defined in open_tcrypt.c
*/
if( zuluCryptOpenTcrypt( device,mapper,key,key_len,key_source,volume_type,NULL,0,0,NULL ) == 0 ){
/*
* zuluCryptCreateFileSystemInAVolume() is defined in create_volume.c
*/
if( zuluCryptCreateFileSystemInAVolume( fs,device_mapper ) == 0 ){
r = 0 ;
}else{
r = 3 ;
}
/*
* zuluCryptCloseMapper() is defined in close_mapper.c
*/
zuluCryptCloseMapper( device_mapper ) ;
}else{
r = 3 ;
}
StringDelete( &m ) ;
return r ;
}
int zuluCryptOpenVolume( const char * dev,const char * mapper,
const char * m_point,uid_t id,unsigned long m_opts,
const char * fs_opts,const char * pass,size_t pass_size )
{
int h ;
string_t p = StringVoid ;
string_t q = StringVoid ;
int lmode ;
int fd ;
const char * mode ;
const char * mapper_1 ;
/*
* zuluCryptPathIsNotValid() is defined in is_path_valid.c
*/
if( zuluCryptPathIsNotValid( dev ) ){
return 3 ;
}
/*
* zuluCryptMapperPrefix() is defined in create_mapper_name.c
*/
p = String( zuluCryptMapperPrefix() ) ;
mapper_1 = StringMultipleAppend( p,"/",mapper,END ) ;
/*
* zuluCryptPathIsValid() is defined in is_path_valid.c
*/
if( zuluCryptPathIsValid( mapper_1 ) ){
return zuluExit( 2,p ) ;
}
if( m_opts & MS_RDONLY ){
lmode = O_RDONLY ;
mode = "ro" ;
}else{
lmode = O_RDWR ;
mode = "rw" ;
}
if( StringPrefixMatch( dev,"/dev/",5 ) ){
h = _open_mapper( dev,mapper,mode,pass,pass_size ) ;
}else{
/*
* zuluCryptAttachLoopDeviceToFile() is defined in create_loop_device.c
*/
if( zuluCryptAttachLoopDeviceToFile( dev,lmode,&fd,&q ) ){
dev = StringContent( q ) ;
h = _open_mapper( dev,mapper,mode,pass,pass_size ) ;
close( fd ) ;
StringDelete( &q ) ;
}else{
h = 1 ;
}
}
switch( h ){
case 1 : return zuluExit( 4,p ) ;
case 2 : return zuluExit( 8,p ) ;
case 3 : return zuluExit( 3,p ) ;
}
if( m_point != NULL ){
/*
* zuluCryptMountVolume() is defined in mount_volume.c
*/
h = zuluCryptMountVolume( mapper_1,m_point,m_opts,fs_opts,id ) ;
if( h != 0 ){
/*
* zuluCryptCloseMapper() is defined in close_mapper.c
*/
if( zuluCryptCloseMapper( mapper_1 ) != 0 ){
h = 15 ;
}
}
}
return zuluExit( h,p ) ;
}
/*
* Purpose of this function is to open a device and write random data to it as a way of hiding information on the disk.
*
* The above is accomplished by opening a plain mapper against the device and then write to the device through the mapper
*
*/
int zuluCryptEXEWriteDeviceWithJunk( const struct_opts * opts,const char * mapping_name,uid_t uid )
{
stringList_t stl = StringListInit() ;
string_t * mapper = StringListAssign( stl ) ;
string_t * confirm = StringListAssign( stl );
double size ;
double size_written ;
const char * device = opts->device ;
char buffer[ SIZE ] ;
int ratio ;
int prev_ratio ;
int k ;
struct sigaction sigac;
memset( &sigac,'\0',sizeof( struct sigaction ) ) ;
sigac.sa_handler = &sigTERMhandler ;
sigaction( SIGINT,&sigac,NULL ) ;
sigaction( SIGTERM,&sigac,NULL ) ;
sigaction( SIGHUP,&sigac,NULL ) ;
__exit_as_requested = 0 ;
if( ( k = open_plain_as_me_1( opts,mapping_name,uid,0 ) ) != 0 ){
return k ;
}
*mapper = zuluCryptCreateMapperName( device,mapping_name,uid,ZULUCRYPTshortMapperPath ) ;
StringMultiplePrepend( *mapper,"/",crypt_get_dir(),NULL ) ;
if( opts->ask_confirmation ){
printf( gettext( "\nWARNING, device \"%s\" will be overwritten with random data destroying all present data.\n" ),device ) ;
printf( gettext( "Are you sure you want to proceed? Type \"YES\" and press enter if you are sure: " ) ) ;
*confirm = StringGetFromTerminal_1( 3 ) ;
if( *confirm == StringVoid ){
return zuluExit( stl,17 ) ;
}else{
k = StringEqual( *confirm,gettext( "YES" ) ) ;
if( k == 0 ){
if( zuluCryptSecurityGainElevatedPrivileges() ){
zuluCryptCloseMapper( StringContent( *mapper ) ) ;
zuluCryptSecurityDropElevatedPrivileges() ;
}
return zuluExit( stl,5 ) ;
}
}
}
k = open( StringContent( *mapper ),O_WRONLY ) ;
size = ( double ) blkid_get_dev_size( k ) ;
memset( buffer,0,SIZE ) ;
size_written = 0 ;
prev_ratio = -1 ;
while( write( k,buffer,SIZE ) > 0 ){
if( __exit_as_requested == 1 ){
break ;
}
size_written += SIZE ;
ratio = ( int ) ( ( size_written / size ) * 100 ) ;
if( ratio > prev_ratio ){
printf( "\r%s %d%%",gettext( "percentage complete: " ),ratio ) ;
fflush( stdout );
prev_ratio = ratio ;
}
}
close( k ) ;
if( zuluCryptSecurityGainElevatedPrivileges() ){
zuluCryptCloseMapper( StringContent( *mapper ) ) ;
zuluCryptSecurityDropElevatedPrivileges() ;
}
if( __exit_as_requested == 1 ){
return zuluExit( stl,15 ) ;
}else{
return zuluExit( stl,3 ) ;
}
}
