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/*
*
* Copyright (c) 2011-2015
* name : Francis Banyikwa
* email: mhogomchungu@gmail.com
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include <sys/syscall.h>
#include <libcryptsetup.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <stdio.h>
#include <limits.h>
int zuluCryptOpenPlain_2( const char * device,
const char * mapper,
const char * mode,
const char * key,
size_t key_len,
const char * rng ) ;
static int zuluExit( int st,string_t m )
{
StringDelete( &m ) ;
return st ;
}
int zuluCryptCreateFileSystemInAVolume( const char * fs,const char * device_mapper )
{
int r ;
char * e = NULL ;
process_t p ;
if( StringsAreEqual( fs,"none" ) ){
return 0 ;
}
/*
* zulucryptFileSystemIsSupported() is defined in mount_fs_options.c
*/
if( zulucryptFileSystemIsSupported( fs ) == 0 ){
return 1 ;
}
p = Process( ZULUCRYPTmkfs,NULL ) ;
if( StringAtLeastOneMatch_1( fs,"ext2","ext3","ext4",NULL ) ){
ProcessSetArgumentList( p,"-t",fs,"-m","1",device_mapper,NULL ) ;
}else if( StringsAreEqual( fs,"reiserfs" ) ){
ProcessSetArgumentList( p,"-t",fs,"-f","-f","-q",device_mapper,NULL ) ;
}else if( StringsAreEqual( fs,"jfs" ) ){
ProcessSetArgumentList( p,"-t",fs,"-q",device_mapper,NULL ) ;
}else if( StringsAreEqual( fs,"ntfs" ) ){
ProcessSetArgumentList( p,"-t",fs,"-f",device_mapper,NULL ) ;
}else if( StringsAreEqual( fs,"xfs" ) ){
ProcessSetArgumentList( p,"-t",fs,"-f",device_mapper,NULL ) ;
}else{
ProcessSetArgumentList( p,"-t",fs,device_mapper,NULL ) ;
/*
* unhandled fs are processed here.They are given 60 seconds to accomplish their task
* and are assumed to be running in interactive more and are blocked waiting for user input
* when they fail to return in time and hence are killed since we cant get to them from GUI
*/
ProcessSetOptionTimeout( p,60,SIGKILL ) ;
}
ProcessStart( p ) ;
r = ProcessExitStatus( p ) ;
if( r != 0 ){
ProcessGetOutPut( p,&e,ProcessStdError ) ;
if( e ){
puts( e ) ;
StringFree( e ) ;
}
}
ProcessCleanUp( &p ) ;
return r ;
}
typedef struct{
const char * fs ;
const char * type ;
const char * pass ;
size_t pass_size ;
const char * rng ;
}arguments ;
static int _create_volume( const char * device,const resolve_path_t * opts )
{
int r ;
const char * e ;
const char * mapper ;
const arguments * args = opts->args ;
string_t xt = StringVoid ;
string_t m = String( "/zuluCrypt-create-volume-" ) ;
mapper = StringAppendInt( m,(u_int64_t)syscall( SYS_gettid ) ) + 1 ;
if( StringsAreEqual( args->type,"plain.keyfile" ) ){
if( StringsAreEqual( args->rng,"/dev/urandom" ) ){
e = "/dev/urandom.aes.cbc-essiv:sha256.256.null.0" ;
}else if( StringsAreEqual( args->rng,"/dev/random" ) ){
e = "/dev/random.aes.cbc-essiv:sha256.256.null.0" ;
}else{
xt = zuluCryptUpdatePlainDmcryptProperties( args->rng ) ;
e = StringContent( xt ) ;
}
if( zuluCryptOpenPlain_2( device,mapper,"rw",args->pass,args->pass_size,e ) != 0 ){
StringDelete( &xt ) ;
return zuluExit( 3,m ) ;
}
StringDelete( &xt ) ;
}else if( StringsAreEqual( args->type,"plain" ) ){
if( zuluCryptOpenPlain_2( device,mapper,"rw",args->pass,args->pass_size,args->rng ) != 0 ){
return zuluExit( 3,m ) ;
}
}else{
if( StringAtLeastOneMatch_1( args->type,"luks","luks1",NULL ) ){
if( zuluCryptCreateLuks( device,args->pass,args->pass_size,args->rng ) != 0 ){
return zuluExit( 3,m ) ;
}
}else if( StringsAreEqual( args->type,"luks2" ) ){
if( zuluCryptCreateLuks2( device,args->pass,args->pass_size,args->rng ) != 0 ){
return zuluExit( 3,m ) ;
}
}else{
return zuluExit( 3,m ) ;
}
if( zuluCryptOpenLuks( device,mapper,"rw",args->pass,args->pass_size ) != 0 ){
return zuluExit( 3,m ) ;
}
}
mapper = StringPrepend( m,crypt_get_dir() ) ;
r = zuluCryptCreateFileSystemInAVolume( args->fs,mapper ) ;
/*
* zuluCryptCloseMapper() is defined in close_mapper.c
*/
zuluCryptCloseMapper( mapper ) ;
if( r == 0 ){
return zuluExit( 0,m ) ;
}else{
return zuluExit( 3,m ) ;
}
}
int zuluCryptCreateVolume( const char * device,const char * fs,
const char * type,const char * pass,
size_t pass_size,const char * rng )
{
/*
* resolve_path_t is defined in includes.h
*/
resolve_path_t opts ;
arguments args ;
memset( &opts,'\0',sizeof( opts ) ) ;
memset( &args,'\0',sizeof( args ) ) ;
args.fs = fs ;
args.type = type ;
args.pass = pass ;
args.pass_size = pass_size ;
args.rng = rng ;
opts.device = device ;
opts.args = &args ;
opts.open_mode = O_RDWR ;
opts.error_value = 3 ;
/*
* zuluCryptResolveDevicePath() is defined in resolve_path.c
*/
return zuluCryptResolveDevicePath( _create_volume,&opts ) ;
}
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