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/*
File: parthumax.c
Copyright (C) 2010 Christophe GRENIER <grenier@cgsecurity.org>
This software 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, write the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#if !defined(SINGLE_PARTITION_TYPE) || defined(SINGLE_PARTITION_HUMAX)
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include <ctype.h> /* tolower */
#include <assert.h>
#include "types.h"
#include "common.h"
#include "fnctdsk.h"
#include "lang.h"
#include "intrf.h"
#include "chgtype.h"
#include "log.h"
#include "parthumax.h"
/*@
@ requires \valid(disk_car);
@ requires valid_disk(disk_car);
@*/
// ensures valid_list_part(\result);
static list_part_t *read_part_humax(disk_t *disk_car, const int verbose, const int saveheader);
/*@
@ requires \valid_read(disk_car);
@ requires valid_disk(disk_car);
@ requires \valid(list_part);
@ requires separation: \separated(disk_car, list_part);
@*/
static int write_part_humax(disk_t *disk_car, const list_part_t *list_part, const int ro , const int verbose);
/*@
@ requires \valid(disk_car);
@ requires list_part == \null || \valid(list_part);
@ requires separation: \separated(disk_car, list_part);
@*/
static list_part_t *init_part_order_humax(const disk_t *disk_car, list_part_t *list_part);
/*@
@ requires \valid_read(disk_car);
@ requires \valid(partition);
@ requires separation: \separated(disk_car, partition);
@ assigns partition->status;
@*/
static void set_next_status_humax(const disk_t *disk_car, partition_t *partition);
/*@
@ requires list_part == \null || \valid_read(list_part);
@*/
static int test_structure_humax(const list_part_t *list_part);
/*@
@ requires \valid(partition);
@ assigns \nothing;
@*/
static int is_part_known_humax(const partition_t *partition);
/*@
@ requires \valid_read(disk_car);
@ requires list_part == \null || \valid(list_part);
@*/
static void init_structure_humax(const disk_t *disk_car,list_part_t *list_part, const int verbose);
/*@
@ requires \valid_read(partition);
@ assigns \nothing;
@*/
static const char *get_partition_typename_humax(const partition_t *partition);
/*@
@ requires \valid_read(partition);
@ assigns \nothing;
@*/
static unsigned int get_part_type_humax(const partition_t *partition);
#if 0
static const struct systypes humax_sys_types[] = {
{0x00, "Empty" },
{PHUMAX_PARTITION, "Partition" },
{0, NULL }
};
#endif
struct partition_humax {
uint32_t unk1;
uint32_t num_sectors;
uint32_t unk2;
uint32_t start_sector;
} __attribute__ ((gcc_struct, __packed__));
struct humaxlabel {
char unk1[0x1be];
struct partition_humax partitions[4];
uint16_t magic;
} __attribute__ ((gcc_struct, __packed__));
arch_fnct_t arch_humax=
{
.part_name="Humax",
.part_name_option="partition_humax",
.msg_part_type=" P=Primary D=Deleted",
.read_part=&read_part_humax,
.write_part=&write_part_humax,
.init_part_order=&init_part_order_humax,
.get_geometry_from_mbr=NULL,
.check_part=NULL,
.write_MBR_code=NULL,
.set_prev_status=&set_next_status_humax,
.set_next_status=&set_next_status_humax,
.test_structure=&test_structure_humax,
.get_part_type=&get_part_type_humax,
.set_part_type=NULL,
.init_structure=&init_structure_humax,
.erase_list_part=NULL,
.get_partition_typename=&get_partition_typename_humax,
.is_part_known=&is_part_known_humax
};
static int is_part_known_humax(const partition_t *partition)
{
return (partition->part_type_humax != PHUMAX_PARTITION);
}
static unsigned int get_part_type_humax(const partition_t *partition)
{
return partition->part_type_humax;
}
static list_part_t *read_part_humax(disk_t *disk_car, const int verbose, const int saveheader)
{
unsigned int i;
struct humaxlabel *humaxlabel;
list_part_t *new_list_part=NULL;
uint32_t *p32;
unsigned char *buffer;
/*@ assert valid_list_part(new_list_part); */
if(disk_car->sector_size < DEFAULT_SECTOR_SIZE)
return NULL;
buffer=(unsigned char *)MALLOC(disk_car->sector_size);
screen_buffer_reset();
humaxlabel=(struct humaxlabel*)buffer;
p32=(uint32_t*)buffer;
if(disk_car->pread(disk_car, buffer, DEFAULT_SECTOR_SIZE, (uint64_t)0) != DEFAULT_SECTOR_SIZE)
{
screen_buffer_add( msg_PART_RD_ERR);
free(buffer);
return NULL;
}
for(i=0; i<0x200/4; i++)
p32[i]=be32(p32[i]);
dump_log(buffer, DEFAULT_SECTOR_SIZE);
if (le16(humaxlabel->magic) != 0xAA55)
{
screen_buffer_add("Bad HUMAX partition\n");
free(buffer);
return NULL;
}
/*@
@ loop invariant valid_list_part(new_list_part);
@*/
for(i=0;i<4;i++)
{
if (humaxlabel->partitions[i].num_sectors > 0)
{
int insert_error=0;
partition_t *new_partition=partition_new(&arch_humax);
new_partition->order=i+1;
new_partition->part_type_humax=PHUMAX_PARTITION;
new_partition->part_offset=be32(humaxlabel->partitions[i].start_sector)*disk_car->sector_size;
new_partition->part_size=(uint64_t)be32(humaxlabel->partitions[i].num_sectors)*disk_car->sector_size;
new_partition->status=STATUS_PRIM;
// disk_car->arch->check_part(disk_car,verbose,new_partition,saveheader);
aff_part_buffer(AFF_PART_ORDER|AFF_PART_STATUS,disk_car,new_partition);
new_list_part=insert_new_partition(new_list_part, new_partition, 0, &insert_error);
if(insert_error>0)
free(new_partition);
}
}
free(buffer);
return new_list_part;
}
static int write_part_humax(disk_t *disk_car, const list_part_t *list_part, const int ro, const int verbose)
{
/* TODO: Implement it */
if(ro==0)
return -1;
return 0;
}
static list_part_t *init_part_order_humax(const disk_t *disk_car, list_part_t *list_part)
{
int nbr_prim=0;
list_part_t *element;
for(element=list_part;element!=NULL;element=element->next)
{
switch(element->part->status)
{
case STATUS_PRIM:
element->part->order=nbr_prim++;
break;
default:
log_critical("init_part_order_humax: severe error\n");
break;
}
}
return list_part;
}
list_part_t *add_partition_humax_cli(const disk_t *disk_car,list_part_t *list_part, char **current_cmd)
{
CHS_t start,end;
partition_t *new_partition=partition_new(&arch_humax);
assert(current_cmd!=NULL);
start.cylinder=0;
start.head=0;
start.sector=1;
end.cylinder=disk_car->geom.cylinders-1;
end.head=disk_car->geom.heads_per_cylinder-1;
end.sector=disk_car->geom.sectors_per_head;
/*@
@ loop invariant valid_list_part(list_part);
@ loop invariant valid_read_string(*current_cmd);
@ */
while(1)
{
skip_comma_in_command(current_cmd);
/*@ assert valid_read_string(*current_cmd); */
if(check_command(current_cmd,"c,",2)==0)
{
start.cylinder=ask_number_cli(current_cmd, start.cylinder,0,disk_car->geom.cylinders-1,"Enter the starting cylinder ");
}
else if(check_command(current_cmd,"C,",2)==0)
{
end.cylinder=ask_number_cli(current_cmd, end.cylinder,start.cylinder,disk_car->geom.cylinders-1,"Enter the ending cylinder ");
}
else if(check_command(current_cmd,"T,",2)==0)
{
change_part_type_cli(disk_car,new_partition,current_cmd);
}
else if((CHS2offset(disk_car,&end)>new_partition->part_offset) &&
new_partition->part_type_humax>0)
{
int insert_error=0;
list_part_t *new_list_part=insert_new_partition(list_part, new_partition, 0, &insert_error);
/*@ assert valid_list_part(new_list_part); */
if(insert_error>0)
{
free(new_partition);
/*@ assert valid_list_part(new_list_part); */
return new_list_part;
}
new_partition->status=STATUS_PRIM;
if(test_structure_humax(list_part)!=0)
new_partition->status=STATUS_DELETED;
/*@ assert valid_read_string(*current_cmd); */
/*@ assert valid_list_part(new_list_part); */
return new_list_part;
}
else
{
free(new_partition);
/*@ assert valid_read_string(*current_cmd); */
/*@ assert valid_list_part(list_part); */
return list_part;
}
}
}
static void set_next_status_humax(const disk_t *disk_car, partition_t *partition)
{
if(partition->status==STATUS_DELETED)
partition->status=STATUS_PRIM;
else
partition->status=STATUS_DELETED;
}
static int test_structure_humax(const list_part_t *list_part)
{ /* Return 1 if bad*/
list_part_t *new_list_part=NULL;
int res;
unsigned int nbr_prim=0;
const list_part_t *element;
/*@ loop assigns element, nbr_prim; */
for(element=list_part;element!=NULL;element=element->next)
{
if(element->part->status == STATUS_PRIM)
nbr_prim++;
}
if(nbr_prim>4)
return 1;
new_list_part=gen_sorted_partition_list(list_part);
res=is_part_overlapping(new_list_part);
part_free_list_only(new_list_part);
return res;
}
static void init_structure_humax(const disk_t *disk_car,list_part_t *list_part, const int verbose)
{
list_part_t *element;
list_part_t *new_list_part=NULL;
/* Create new list */
for(element=list_part;element!=NULL;element=element->next)
element->to_be_removed=0;
for(element=list_part;element!=NULL;element=element->next)
{
list_part_t *element2;
for(element2=element->next;element2!=NULL;element2=element2->next)
{
if(element->part->part_offset+element->part->part_size-1 >= element2->part->part_offset)
{
element->to_be_removed=1;
element2->to_be_removed=1;
}
}
if(element->to_be_removed==0)
{
int insert_error=0;
new_list_part=insert_new_partition(new_list_part, element->part, 0, &insert_error);
}
}
for(element=new_list_part;element!=NULL;element=element->next)
element->part->status=STATUS_PRIM;
if(test_structure_humax(new_list_part))
{
for(element=new_list_part;element!=NULL;element=element->next)
element->part->status=STATUS_DELETED;
}
part_free_list_only(new_list_part);
}
static const char *get_partition_typename_humax(const partition_t *partition)
{
return "Partition";
}
#endif
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