static int _modify_tcrypt( info_t * info,const struct_opts * opts )
{
int k = 4 ;
int r ;
string_t st = StringVoid ;
string_t xt = StringVoid ;
if( StringsAreEqual( opts->key_source,"-p" ) ){
info->header_key = opts->key ;
info->header_key_source = "passphrase" ;
info->header_new_key_source = "new_passphrase" ;
}else if( opts->key == NULL && StringsAreNotEqual( opts->key_source,"-f" ) ){
st = info->getKey( &r ) ;
if( r ){
info->key = StringContent( st ) ;
info->header_key = info->key ;
info->header_key_source = "passphrase" ;
info->header_new_key_source = "new_passphrase" ;
}else{
return zuluExit_1( k,st,xt ) ;
}
}else{
/*
* function is defined at "path_access.c"
*/
zuluCryptGetPassFromFile( opts->key,info->uid,&st ) ;
zuluCryptSecurityGainElevatedPrivileges() ;
if( st == StringVoid ){
return zuluExit_1( k,st,xt ) ;
}else{
if( StringHasComponent( opts->key,".zuluCrypt-socket" ) ){
info->key = StringContent( st ) ;
info->header_key = info->key ;
info->header_key_source = "passphrase" ;
info->header_new_key_source = "new_passphrase" ;
}else{
xt = zuluCryptCreateKeyFile( StringContent( st ),StringLength( st ),"tcrypt-bk-" ) ;
if( xt == StringVoid ){
return zuluExit_1( k,st,xt ) ;
}else{
info->key = StringContent( xt ) ;
info->header_key = info->key ;
info->header_key_source = "keyfiles" ;
info->header_new_key_source = "new_keyfiles" ;
}
}
}
}
/*
* zuluCryptModifyTcryptHeader() is defined in ../lib/create_tcrypt.c
*/
k = zuluCryptModifyTcryptHeader( info ) ;
if( xt != StringVoid ){
/*
* zuluCryptDeleteFile() is defined in ../lib/file_path_security.c
*/
zuluCryptDeleteFile( StringContent( xt ) ) ;
}
return zuluExit_1( k,st,xt ) ;
}
static int _replace_truecrypt_key( const tcrypt_opts * opts )
{
info_t info ;
string_t st = StringVoid ;
string_t xt = StringVoid ;
int r ;
memset( &info,'\0',sizeof( info_t ) ) ;
info.device = opts->device ;
/*
* zuluCryptCreateKeyFile() is defined in ../lib/open_tcrypt.c
*/
if( opts->existing_key_is_keyfile ){
info.header_key_source = "keyfiles" ;
st = zuluCryptCreateKeyFile( opts->existing_key,opts->existing_key_size,"add-tcrypt-1" ) ;
info.header_key = StringContent( st ) ;
}else{
info.header_key_source = "passphrase" ;
info.header_key = opts->existing_key ;
}
if( opts->new_key_is_keyfile ){
info.header_new_key_source = "new_keyfiles" ;
st = zuluCryptCreateKeyFile( opts->new_key,opts->new_key_size,"add-tcrypt-2" ) ;
info.header_new_key = StringContent( st ) ;
}else{
info.header_new_key_source = "new_passphrase" ;
info.header_new_key = opts->new_key ;
}
info.rng = "/dev/urandom" ;
/*
* zuluCryptModifyTcryptHeader() is defined in ../lib/create_tcrypt.c
*/
r = zuluCryptModifyTcryptHeader( &info ) ;
/*
* zuluCryptDeleteFile_1() is defined in ../lib/file_path_security.c
*/
if( st != StringVoid ){
zuluCryptDeleteFile_1( st ) ;
StringDelete( &st ) ;
}
if( xt != StringVoid ){
zuluCryptDeleteFile_1( xt ) ;
StringDelete( &xt ) ;
}
if( r == 0 ){
return 0 ;
}else{
return 1 ;
}
}
