/src/libluksde/libluksde/libluksde_volume_header.c

Source
/*
 * The LUKS volume header functions
 *
 * Copyright (C) 2013-2026, Joachim Metz <joachim.metz@gmail.com>
 *
 * Refer to AUTHORS for acknowledgements.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 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 Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include <common.h>
#include <byte_stream.h>
#include <memory.h>
#include <types.h>

#include "libluksde_debug.h"
#include "libluksde_definitions.h"
#include "libluksde_io_handle.h"
#include "libluksde_key_slot.h"
#include "libluksde_libbfio.h"
#include "libluksde_libcdata.h"
#include "libluksde_libcerror.h"
#include "libluksde_libcnotify.h"
#include "libluksde_libfguid.h"
#include "libluksde_libuna.h"
#include "libluksde_volume_header.h"

#include "luksde_keyslot.h"
#include "luksde_volume.h"

const uint8_t luksde_backup_volume_header_signature[ 6 ] = { 'S', 'K', 'U', 'L', 0xba, 0xbe };

/* Creates a volume header
 * Make sure the value volume_header is referencing, is set to NULL
 * Returns 1 if successful or -1 on error
 */
int libluksde_volume_header_initialize(
     libluksde_volume_header_t **volume_header,
     libcerror_error_t **error )
{
  static char *function = "libluksde_volume_header_initialize";

  if( volume_header == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid volume header.",
     function );

    return( -1 );
  }
  if( *volume_header != NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
     "%s: invalid volume header value already set.",
     function );

    return( -1 );
  }
  *volume_header = memory_allocate_structure(
                    libluksde_volume_header_t );

  if( *volume_header == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_MEMORY,
     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
     "%s: unable to create volume header.",
     function );

    goto on_error;
  }
  if( memory_set(
       *volume_header,
       0,
       sizeof( libluksde_volume_header_t ) ) == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_MEMORY,
     LIBCERROR_MEMORY_ERROR_SET_FAILED,
     "%s: unable to clear volume header.",
     function );

    memory_free(
     *volume_header );

    *volume_header = NULL;

    return( -1 );
  }
  if( libcdata_array_initialize(
       &( ( *volume_header )->key_slots_array ),
       0,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
     "%s: unable to create key slots array.",
     function );

    goto on_error;
  }
  return( 1 );

on_error:
  if( *volume_header != NULL )
  {
    memory_free(
     *volume_header );

    *volume_header = NULL;
  }
  return( -1 );
}

/* Frees a volume header
 * Returns 1 if successful or -1 on error
 */
int libluksde_volume_header_free(
     libluksde_volume_header_t **volume_header,
     libcerror_error_t **error )
{
  static char *function = "libluksde_volume_header_free";
  int result            = 1;

  if( volume_header == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid volume header.",
     function );

    return( -1 );
  }
  if( *volume_header != NULL )
  {
    if( libcdata_array_free(
         &( ( *volume_header )->key_slots_array ),
         (int(*)(intptr_t **, libcerror_error_t **)) &libluksde_key_slot_free,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_RUNTIME,
       LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,
       "%s: unable to free key slots array.",
       function );

      result = -1;
    }
    memory_free(
     *volume_header );

    *volume_header = NULL;
  }
  return( result );
}

/* Parses the encryption method
 * Returns 1 if successful or -1 on error
 */
int libluksde_volume_parse_encryption_method(
     libluksde_volume_header_t *volume_header,
     const uint8_t *encryption_method,
     libcerror_error_t **error )
{
  static char *function = "libluksde_volume_parse_encryption_method";

  if( volume_header == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid volume header.",
     function );

    return( -1 );
  }
  if( encryption_method == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid encryption method.",
     function );

    return( -1 );
  }
  if( ( encryption_method[ 0 ] == 'a' )
   || ( encryption_method[ 0 ] == 'A' ) )
  {
    if( ( ( encryption_method[ 1 ] == 'e' )
      ||  ( encryption_method[ 1 ] == 'E' ) )
     && ( ( encryption_method[ 2 ] == 's' )
      ||  ( encryption_method[ 2 ] == 'S' ) )
     &&   ( encryption_method[ 3 ] == 0 ) )
    {
      volume_header->encryption_method = LIBLUKSDE_ENCRYPTION_METHOD_AES;
    }
    else if( ( ( encryption_method[ 1 ] == 'r' )
           ||  ( encryption_method[ 1 ] == 'R' ) )
          && ( ( encryption_method[ 2 ] == 'c' )
           ||  ( encryption_method[ 2 ] == 'C' ) )
          &&   ( encryption_method[ 3 ] == '4' )
          &&   ( encryption_method[ 4 ] == 0 ) )
    {
      volume_header->encryption_method = LIBLUKSDE_ENCRYPTION_METHOD_ARC4;
    }
  }
  else if( ( encryption_method[ 0 ] == 'b' )
        || ( encryption_method[ 0 ] == 'B' ) )
  {
    if( ( ( encryption_method[ 1 ] == 'l' )
      ||  ( encryption_method[ 1 ] == 'L' ) )
     && ( ( encryption_method[ 2 ] == 'o' )
      ||  ( encryption_method[ 2 ] == 'O' ) )
     && ( ( encryption_method[ 3 ] == 'w' )
      ||  ( encryption_method[ 3 ] == 'W' ) )
     && ( ( encryption_method[ 4 ] == 'f' )
      ||  ( encryption_method[ 4 ] == 'F' ) )
     && ( ( encryption_method[ 5 ] == 'i' )
      ||  ( encryption_method[ 5 ] == 'I' ) )
     && ( ( encryption_method[ 6 ] == 's' )
      ||  ( encryption_method[ 6 ] == 'S' ) )
     && ( ( encryption_method[ 7 ] == 'h' )
      ||  ( encryption_method[ 7 ] == 'H' ) )
     &&   ( encryption_method[ 8 ] == 0 ) )
    {
      volume_header->encryption_method = LIBLUKSDE_ENCRYPTION_METHOD_BLOWFISH;
    }
  }
  else if( ( encryption_method[ 0 ] == 'c' )
        || ( encryption_method[ 0 ] == 'C' ) )
  {
    if( ( ( encryption_method[ 1 ] == 'a' )
      ||  ( encryption_method[ 1 ] == 'A' ) )
     && ( ( encryption_method[ 2 ] == 's' )
      ||  ( encryption_method[ 2 ] == 'S' ) )
     && ( ( encryption_method[ 3 ] == 't' )
      ||  ( encryption_method[ 3 ] == 'T' ) )
     &&   ( encryption_method[ 5 ] == 0 ) )
    {
      if( encryption_method[ 4 ] == '5' )
      {
        volume_header->encryption_method = LIBLUKSDE_ENCRYPTION_METHOD_CAST5;
      }
      else if( encryption_method[ 4 ] == '6' )
      {
        volume_header->encryption_method = LIBLUKSDE_ENCRYPTION_METHOD_CAST6;
      }
    }
  }
  else if( ( encryption_method[ 0 ] == 's' )
        || ( encryption_method[ 0 ] == 'S' ) )
  {
    if( ( ( encryption_method[ 1 ] == 'e' )
      ||  ( encryption_method[ 1 ] == 'E' ) )
     && ( ( encryption_method[ 2 ] == 'r' )
      ||  ( encryption_method[ 2 ] == 'R' ) )
     && ( ( encryption_method[ 3 ] == 'p' )
      ||  ( encryption_method[ 3 ] == 'P' ) )
     && ( ( encryption_method[ 4 ] == 'e' )
      ||  ( encryption_method[ 4 ] == 'E' ) )
     && ( ( encryption_method[ 5 ] == 'n' )
      ||  ( encryption_method[ 5 ] == 'N' ) )
     && ( ( encryption_method[ 6 ] == 't' )
      ||  ( encryption_method[ 6 ] == 'T' ) )
     &&   ( encryption_method[ 7 ] == 0 ) )
    {
      volume_header->encryption_method = LIBLUKSDE_ENCRYPTION_METHOD_SERPENT;
    }
  }
  else if( ( encryption_method[ 0 ] == 't' )
        || ( encryption_method[ 0 ] == 'T' ) )
  {
    if( ( ( encryption_method[ 1 ] == 'w' )
      ||  ( encryption_method[ 1 ] == 'W' ) )
     && ( ( encryption_method[ 2 ] == 'o' )
      ||  ( encryption_method[ 2 ] == 'O' ) )
     && ( ( encryption_method[ 3 ] == 'f' )
      ||  ( encryption_method[ 3 ] == 'F' ) )
     && ( ( encryption_method[ 4 ] == 'i' )
      ||  ( encryption_method[ 4 ] == 'I' ) )
     && ( ( encryption_method[ 5 ] == 's' )
      ||  ( encryption_method[ 5 ] == 'S' ) )
     && ( ( encryption_method[ 6 ] == 'h' )
      ||  ( encryption_method[ 6 ] == 'H' ) )
     &&   ( encryption_method[ 7 ] == 0 ) )
    {
      volume_header->encryption_method = LIBLUKSDE_ENCRYPTION_METHOD_TWOFISH;
    }
  }
  return( 1 );
}

/* Parses the encryption mode
 * Returns 1 if successful or -1 on error
 */
int libluksde_volume_parse_encryption_mode(
     libluksde_volume_header_t *volume_header,
     const uint8_t *encryption_mode,
     libcerror_error_t **error )
{
  static char *function = "libluksde_volume_parse_encryption_mode";
  int separator_index   = 0;

  if( volume_header == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid volume header.",
     function );

    return( -1 );
  }
  if( encryption_mode == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid encryption mode.",
     function );

    return( -1 );
  }
  if( ( encryption_mode[ 0 ] == 'c' )
   || ( encryption_mode[ 0 ] == 'C' ) )
  {
    if( ( ( encryption_mode[ 1 ] == 'b' )
      ||  ( encryption_mode[ 1 ] == 'B' ) )
     && ( ( encryption_mode[ 2 ] == 'c' )
      ||  ( encryption_mode[ 2 ] == 'C' ) )
     &&   ( encryption_mode[ 3 ] == '-' ) )
    {
      volume_header->encryption_chaining_mode = LIBLUKSDE_ENCRYPTION_CHAINING_MODE_CBC;

      separator_index = 3;
    }
  }
  else if( ( encryption_mode[ 0 ] == 'e' )
        || ( encryption_mode[ 0 ] == 'E' ) )
  {
    if( ( ( encryption_mode[ 1 ] == 'c' )
      ||  ( encryption_mode[ 1 ] == 'C' ) )
     && ( ( encryption_mode[ 2 ] == 'b' )
      ||  ( encryption_mode[ 2 ] == 'B' ) )
     &&   ( encryption_mode[ 3 ] == 0 ) )
    {
      volume_header->encryption_chaining_mode = LIBLUKSDE_ENCRYPTION_CHAINING_MODE_ECB;

      separator_index = 3;
    }
  }
  else if( ( encryption_mode[ 0 ] == 'x' )
        || ( encryption_mode[ 0 ] == 'X' ) )
  {
    if( ( ( encryption_mode[ 1 ] == 't' )
      ||  ( encryption_mode[ 1 ] == 'T' ) )
     && ( ( encryption_mode[ 2 ] == 's' )
      ||  ( encryption_mode[ 2 ] == 'S' ) )
     &&   ( encryption_mode[ 3 ] == '-' ) )
    {
      volume_header->encryption_chaining_mode = LIBLUKSDE_ENCRYPTION_CHAINING_MODE_XTS;

      separator_index = 3;
    }
  }
  if( ( separator_index > 0 )
   && ( separator_index < 31 ) )
  {
    volume_header->initialization_vector_mode = LIBLUKSDE_INITIALIZATION_VECTOR_MODE_NONE;

    if( ( encryption_mode[ separator_index + 1 ] == 'b' )
     || ( encryption_mode[ separator_index + 1 ] == 'B' ) )
    {
      if( ( ( encryption_mode[ separator_index + 2 ] == 'e' )
        ||  ( encryption_mode[ separator_index + 2 ] == 'E' ) )
       && ( ( encryption_mode[ separator_index + 3 ] == 'n' )
        ||  ( encryption_mode[ separator_index + 3 ] == 'N' ) )
       && ( ( encryption_mode[ separator_index + 4 ] == 'b' )
        ||  ( encryption_mode[ separator_index + 4 ] == 'B' ) )
       && ( ( encryption_mode[ separator_index + 5 ] == 'i' )
        ||  ( encryption_mode[ separator_index + 5 ] == 'I' ) )
       &&   ( encryption_mode[ separator_index + 6 ] == 0 ) )
      {
        volume_header->initialization_vector_mode = LIBLUKSDE_INITIALIZATION_VECTOR_MODE_BENBI;
      }
    }
    else if( ( encryption_mode[ separator_index + 1 ] == 'e' )
          || ( encryption_mode[ separator_index + 1 ] == 'E' ) )
    {
      if( ( ( encryption_mode[ separator_index + 2 ] == 's' )
        ||  ( encryption_mode[ separator_index + 2 ] == 'S' ) )
       && ( ( encryption_mode[ separator_index + 3 ] == 's' )
        ||  ( encryption_mode[ separator_index + 3 ] == 'S' ) )
       && ( ( encryption_mode[ separator_index + 4 ] == 'i' )
        ||  ( encryption_mode[ separator_index + 4 ] == 'I' ) )
       && ( ( encryption_mode[ separator_index + 5 ] == 'v' )
        ||  ( encryption_mode[ separator_index + 5 ] == 'V' ) )
       &&   ( encryption_mode[ separator_index + 6 ] == ':' ) )
      {
        if( ( ( encryption_mode[ separator_index + 7 ] == 's' )
          ||  ( encryption_mode[ separator_index + 7 ] == 'S' ) )
         && ( ( encryption_mode[ separator_index + 8 ] == 'h' )
          ||  ( encryption_mode[ separator_index + 8 ] == 'H' ) )
         && ( ( encryption_mode[ separator_index + 9 ] == 'a' )
          ||  ( encryption_mode[ separator_index + 9 ] == 'A' ) ) )
        {
          if( ( encryption_mode[ separator_index + 10 ] == '1' )
           && ( encryption_mode[ separator_index + 11 ] == 0 ) )
          {
            volume_header->initialization_vector_mode = LIBLUKSDE_INITIALIZATION_VECTOR_MODE_ESSIV;
            volume_header->essiv_hashing_method       = LIBLUKSDE_HASHING_METHOD_SHA1;
          }
          else if( ( encryption_mode[ separator_index + 10 ] == '2' )
                && ( encryption_mode[ separator_index + 11 ] == '5' )
                && ( encryption_mode[ separator_index + 12 ] == '6' )
                && ( encryption_mode[ separator_index + 13 ] == 0 ) )
          {
            volume_header->initialization_vector_mode = LIBLUKSDE_INITIALIZATION_VECTOR_MODE_ESSIV;
            volume_header->essiv_hashing_method       = LIBLUKSDE_HASHING_METHOD_SHA256;
          }
        }
/* TODO IV options */
      }
    }
    else if( ( encryption_mode[ separator_index + 1 ] == 'l' )
          || ( encryption_mode[ separator_index + 1 ] == 'L' ) )
    {
      if( ( ( encryption_mode[ separator_index + 2 ] == 'm' )
        ||  ( encryption_mode[ separator_index + 2 ] == 'M' ) )
       && ( ( encryption_mode[ separator_index + 3 ] == 'k' )
        ||  ( encryption_mode[ separator_index + 3 ] == 'K' ) )
       &&   ( encryption_mode[ separator_index + 4 ] == 0 ) )
      {
        volume_header->initialization_vector_mode = LIBLUKSDE_INITIALIZATION_VECTOR_MODE_LMK;
      }
    }
    else if( ( encryption_mode[ separator_index + 1 ] == 'n' )
          || ( encryption_mode[ separator_index + 1 ] == 'N' ) )
    {
      if( ( ( encryption_mode[ separator_index + 2 ] == 'u' )
        ||  ( encryption_mode[ separator_index + 2 ] == 'U' ) )
       && ( ( encryption_mode[ separator_index + 3 ] == 'l' )
        ||  ( encryption_mode[ separator_index + 3 ] == 'L' ) )
       && ( ( encryption_mode[ separator_index + 4 ] == 'l' )
        ||  ( encryption_mode[ separator_index + 4 ] == 'L' ) )
       &&   ( encryption_mode[ separator_index + 5 ] == 0 ) )
      {
        volume_header->initialization_vector_mode = LIBLUKSDE_INITIALIZATION_VECTOR_MODE_NULL;
      }
    }
    else if( ( encryption_mode[ separator_index + 1 ] == 'p' )
          || ( encryption_mode[ separator_index + 1 ] == 'P' ) )
    {
      if( ( ( encryption_mode[ separator_index + 2 ] == 'l' )
        ||  ( encryption_mode[ separator_index + 2 ] == 'L' ) )
       && ( ( encryption_mode[ separator_index + 3 ] == 'a' )
        ||  ( encryption_mode[ separator_index + 3 ] == 'A' ) )
       && ( ( encryption_mode[ separator_index + 4 ] == 'i' )
        ||  ( encryption_mode[ separator_index + 4 ] == 'I' ) )
       && ( ( encryption_mode[ separator_index + 5 ] == 'n' )
        ||  ( encryption_mode[ separator_index + 5 ] == 'N' ) ) )
      {
        if( encryption_mode[ separator_index + 6 ] == 0 )
        {
          volume_header->initialization_vector_mode = LIBLUKSDE_INITIALIZATION_VECTOR_MODE_PLAIN32;
        }
        else if( ( encryption_mode[ separator_index + 6 ] == '6' )
              && ( encryption_mode[ separator_index + 7 ] == '4' )
              && ( encryption_mode[ separator_index + 8 ] == 0 ) )
        {
          volume_header->initialization_vector_mode = LIBLUKSDE_INITIALIZATION_VECTOR_MODE_PLAIN64;
        }
      }
    }
  }
  return( 1 );
}

/* Parses the hashing method
 * Returns 1 if successful or -1 on error
 */
int libluksde_volume_parse_hashing_method(
     libluksde_volume_header_t *volume_header,
     const uint8_t *hashing_method,
     libcerror_error_t **error )
{
  static char *function = "libluksde_volume_parse_hashing_method";

  if( volume_header == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid volume header.",
     function );

    return( -1 );
  }
  if( hashing_method == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid hashing method.",
     function );

    return( -1 );
  }
  if( ( hashing_method[ 0 ] == 'r' )
   || ( hashing_method[ 0 ] == 'R' ) )
  {
    if( ( ( hashing_method[ 1 ] == 'i' )
      ||  ( hashing_method[ 1 ] == 'I' ) )
     && ( ( hashing_method[ 2 ] == 'p' )
      ||  ( hashing_method[ 2 ] == 'P' ) )
     && ( ( hashing_method[ 3 ] == 'e' )
      ||  ( hashing_method[ 3 ] == 'E' ) )
     && ( ( hashing_method[ 4 ] == 'm' )
      ||  ( hashing_method[ 4 ] == 'M' ) )
     && ( ( hashing_method[ 5 ] == 'd' )
      ||  ( hashing_method[ 5 ] == 'D' ) )
     &&   ( hashing_method[ 6 ] == '1' )
     &&   ( hashing_method[ 7 ] == '6' )
     &&   ( hashing_method[ 8 ] == '0' )
     &&   ( hashing_method[ 9 ] == 0 ) )
    {
      volume_header->hashing_method = LIBLUKSDE_HASHING_METHOD_RIPEMD160;
    }
  }
  else if( ( hashing_method[ 0 ] == 's' )
        || ( hashing_method[ 0 ] == 'S' ) )
  {
    if( ( ( hashing_method[ 1 ] == 'h' )
      ||  ( hashing_method[ 1 ] == 'H' ) )
     && ( ( hashing_method[ 2 ] == 'a' )
      ||  ( hashing_method[ 2 ] == 'A' ) ) )
    {
      if( ( hashing_method[ 3 ] == '1' )
       && ( hashing_method[ 4 ] == 0 ) )
      {
        volume_header->hashing_method = LIBLUKSDE_HASHING_METHOD_SHA1;
      }
      else if( ( hashing_method[ 3 ] == '2' )
            && ( hashing_method[ 4 ] == '2' )
            && ( hashing_method[ 5 ] == '4' )
            && ( hashing_method[ 6 ] == 0 ) )
      {
        volume_header->hashing_method = LIBLUKSDE_HASHING_METHOD_SHA224;
      }
      else if( ( hashing_method[ 3 ] == '2' )
            && ( hashing_method[ 4 ] == '5' )
            && ( hashing_method[ 5 ] == '6' )
            && ( hashing_method[ 6 ] == 0 ) )
      {
        volume_header->hashing_method = LIBLUKSDE_HASHING_METHOD_SHA256;
      }
      else if( ( hashing_method[ 3 ] == '5' )
            && ( hashing_method[ 4 ] == '1' )
            && ( hashing_method[ 5 ] == '2' )
            && ( hashing_method[ 6 ] == 0 ) )
      {
        volume_header->hashing_method = LIBLUKSDE_HASHING_METHOD_SHA512;
      }
    }
  }
  return( 1 );
}

/* Reads the volume header
 * Returns 1 if successful or -1 on error
 */
int libluksde_volume_header_read_data(
     libluksde_volume_header_t *volume_header,
     const uint8_t *data,
     size_t data_size,
     libcerror_error_t **error )
{
  libfguid_identifier_t *guid    = NULL;
  libluksde_key_slot_t *key_slot = NULL;
  static char *function          = "libluksde_volume_header_read_data";
  size_t data_offset             = 0;
  int entry_index                = 0;
  int key_slot_index             = 0;
  int result                     = 0;

#if defined( HAVE_DEBUG_OUTPUT )
  uint64_t value_64bit           = 0;
#endif

  if( volume_header == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid volume header.",
     function );

    return( -1 );
  }
  if( data == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid data.",
     function );

    return( -1 );
  }
  if( ( data_size < sizeof( luksde_volume_header_v1_t ) )
   || ( data_size > (size_t) SSIZE_MAX ) )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
     "%s: invalid data size value out of bounds.",
     function );

    return( -1 );
  }
#if defined( HAVE_DEBUG_OUTPUT )
  if( libcnotify_verbose != 0 )
  {
    libcnotify_printf(
     "%s: volume header data:\n",
     function );
    libcnotify_print_data(
     data,
     sizeof( luksde_volume_header_v1_t ),
     LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );
  }
#endif
  if( memory_compare(
       ( (luksde_volume_header_v1_t *) data )->signature,
       luksde_signature,
       6 ) == 0 )
  {
  }
  else if( memory_compare(
            ( (luksde_volume_header_v1_t *) data )->signature,
            luksde_backup_volume_header_signature,
            6 ) == 0 )
  {
  }
  else
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,
     "%s: unsupported signature.",
     function );

    goto on_error;
  }
  byte_stream_copy_to_uint16_big_endian(
   ( (luksde_volume_header_v1_t *) data )->format_version,
   volume_header->format_version );

  if( ( volume_header->format_version != 1 )
   && ( volume_header->format_version != 2 ) )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,
     "%s: unsupported format version.",
     function );

    goto on_error;
  }
  if( volume_header->format_version == 2 )
  {
    if( data_size < sizeof( luksde_volume_header_v2_t ) )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_RUNTIME,
       LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,
       "%s: invalid data size value out of bounds.",
       function );

      goto on_error;
    }
  }
  if( volume_header->format_version == 1 )
  {
    byte_stream_copy_to_uint32_big_endian(
     ( (luksde_volume_header_v1_t *) data )->encrypted_volume_start_sector,
     volume_header->encrypted_volume_start_sector );

    byte_stream_copy_to_uint32_big_endian(
     ( (luksde_volume_header_v1_t *) data )->master_key_size,
     volume_header->master_key_size );

    if( memory_copy(
         volume_header->master_key_validation_hash,
         ( (luksde_volume_header_v1_t *) data )->master_key_validation_hash,
         20 ) == NULL )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_MEMORY,
       LIBCERROR_MEMORY_ERROR_COPY_FAILED,
       "%s: unable to copy master key validation hash.",
       function );

      goto on_error;
    }
    if( memory_copy(
         volume_header->master_key_salt,
         ( (luksde_volume_header_v1_t *) data )->master_key_salt,
         32 ) == NULL )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_MEMORY,
       LIBCERROR_MEMORY_ERROR_COPY_FAILED,
       "%s: unable to copy master key salt.",
       function );

      goto on_error;
    }
    byte_stream_copy_to_uint32_big_endian(
     ( (luksde_volume_header_v1_t *) data )->master_key_number_of_iterations,
     volume_header->master_key_number_of_iterations );
  }
  if( libfguid_identifier_initialize(
       &guid,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
     "%s: unable to create GUID.",
     function );

    goto on_error;
  }
  if( volume_header->format_version == 1 )
  {
    result = libfguid_identifier_copy_from_utf8_string(
              guid,
              ( (luksde_volume_header_v1_t *) data )->volume_identifier,
              40,
              LIBFGUID_STRING_FORMAT_FLAG_USE_MIXED_CASE,
              error );
  }
  else if( volume_header->format_version == 2 )
  {
    result = libfguid_identifier_copy_from_utf8_string(
              guid,
              ( (luksde_volume_header_v2_t *) data )->volume_identifier,
              40,
              LIBFGUID_STRING_FORMAT_FLAG_USE_MIXED_CASE,
              error );
  }
  if( result != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_SET_FAILED,
     "%s: unable to copy GUID from string.",
     function );

    goto on_error;
  }
  if( libfguid_identifier_copy_to_byte_stream(
       guid,
       volume_header->volume_identifier,
       16,
       LIBFGUID_ENDIAN_BIG,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_SET_FAILED,
     "%s: unable to copy GUID to byte stream.",
     function );

    goto on_error;
  }
  if( libfguid_identifier_free(
       &guid,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,
     "%s: unable to free GUID.",
     function );

    goto on_error;
  }
#if defined( HAVE_DEBUG_OUTPUT )
  if( libcnotify_verbose != 0 )
  {
    libcnotify_printf(
     "%s: signature\t\t\t\t: %c%c%c%c\\x%02x\\x%02x\n",
     function,
     data[ 0 ],
     data[ 1 ],
     data[ 2 ],
     data[ 3 ],
     data[ 4 ],
     data[ 5 ] );

    libcnotify_printf(
     "%s: format version\t\t\t: %" PRIu16 "\n",
     function,
     volume_header->format_version );

    if( volume_header->format_version == 1 )
    {
      if( libluksde_debug_print_string_value(
           function,
           "encryption method\t\t\t",
           ( (luksde_volume_header_v1_t *) data )->encryption_method,
           32,
           LIBUNA_CODEPAGE_US_ASCII,
           error ) != 1 )
      {
        libcerror_error_set(
         error,
         LIBCERROR_ERROR_DOMAIN_RUNTIME,
         LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,
         "%s: unable to print string value.",
         function );

        goto on_error;
      }
      if( libluksde_debug_print_string_value(
           function,
           "encryption mode\t\t\t",
           ( (luksde_volume_header_v1_t *) data )->encryption_mode,
           32,
           LIBUNA_CODEPAGE_US_ASCII,
           error ) != 1 )
      {
        libcerror_error_set(
         error,
         LIBCERROR_ERROR_DOMAIN_RUNTIME,
         LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,
         "%s: unable to print string value.",
         function );

        goto on_error;
      }
      if( libluksde_debug_print_string_value(
           function,
           "hashing method\t\t\t",
           ( (luksde_volume_header_v1_t *) data )->hashing_method,
           32,
           LIBUNA_CODEPAGE_US_ASCII,
           error ) != 1 )
      {
        libcerror_error_set(
         error,
         LIBCERROR_ERROR_DOMAIN_RUNTIME,
         LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,
         "%s: unable to print string value.",
         function );

        goto on_error;
      }
      libcnotify_printf(
       "%s: encrypted volume start sector\t: %" PRIu64 "\n",
       function,
       volume_header->encrypted_volume_start_sector );

      libcnotify_printf(
       "%s: master key size\t\t\t: %" PRIu32 "\n",
       function,
       volume_header->master_key_size );

      libcnotify_printf(
       "%s: master key validation hash:\n",
       function );
      libcnotify_print_data(
       volume_header->master_key_validation_hash,
       20,
       0 );

      libcnotify_printf(
       "%s: master key salt:\n",
       function );
      libcnotify_print_data(
       volume_header->master_key_salt,
       32,
       0 );

      libcnotify_printf(
       "%s: master key number of iterations\t: %" PRIu32 "\n",
       function,
       volume_header->master_key_number_of_iterations );

      if( libluksde_debug_print_string_value(
           function,
           "volume identifier\t\t\t",
           ( (luksde_volume_header_v1_t *) data )->volume_identifier,
           40,
           LIBUNA_CODEPAGE_US_ASCII,
           error ) != 1 )
      {
        libcerror_error_set(
         error,
         LIBCERROR_ERROR_DOMAIN_RUNTIME,
         LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,
         "%s: unable to print string value.",
         function );

        goto on_error;
      }
    }
    else if( volume_header->format_version == 2 )
    {
      byte_stream_copy_to_uint64_big_endian(
       ( (luksde_volume_header_v2_t *) data )->metadata_area_size,
       value_64bit );
      libcnotify_printf(
       "%s: metadata area size\t\t\t: %" PRIu64 "\n",
       function,
       value_64bit );

      byte_stream_copy_to_uint64_big_endian(
       ( (luksde_volume_header_v2_t *) data )->sequence_identifier,
       value_64bit );
      libcnotify_printf(
       "%s: sequence identifier\t\t\t: %" PRIu64 "\n",
       function,
       value_64bit );

      if( libluksde_debug_print_string_value(
           function,
           "label\t\t\t\t",
           ( (luksde_volume_header_v2_t *) data )->label,
           48,
           LIBUNA_CODEPAGE_US_ASCII,
           error ) != 1 )
      {
        libcerror_error_set(
         error,
         LIBCERROR_ERROR_DOMAIN_RUNTIME,
         LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,
         "%s: unable to print string value.",
         function );

        goto on_error;
      }
      if( libluksde_debug_print_string_value(
           function,
           "checksum method\t\t\t",
           ( (luksde_volume_header_v2_t *) data )->checksum_method,
           32,
           LIBUNA_CODEPAGE_US_ASCII,
           error ) != 1 )
      {
        libcerror_error_set(
         error,
         LIBCERROR_ERROR_DOMAIN_RUNTIME,
         LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,
         "%s: unable to print string value.",
         function );

        goto on_error;
      }
      libcnotify_printf(
       "%s: salt:\n",
       function );
      libcnotify_print_data(
       ( (luksde_volume_header_v2_t *) data )->salt,
       64,
       0 );

      if( libluksde_debug_print_string_value(
           function,
           "volume identifier\t\t\t",
           ( (luksde_volume_header_v2_t *) data )->volume_identifier,
           40,
           LIBUNA_CODEPAGE_US_ASCII,
           error ) != 1 )
      {
        libcerror_error_set(
         error,
         LIBCERROR_ERROR_DOMAIN_RUNTIME,
         LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,
         "%s: unable to print string value.",
         function );

        goto on_error;
      }
      if( libluksde_debug_print_string_value(
           function,
           "subsystem\t\t\t\t",
           ( (luksde_volume_header_v2_t *) data )->subsystem,
           48,
           LIBUNA_CODEPAGE_US_ASCII,
           error ) != 1 )
      {
        libcerror_error_set(
         error,
         LIBCERROR_ERROR_DOMAIN_RUNTIME,
         LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,
         "%s: unable to print string value.",
         function );

        goto on_error;
      }
      byte_stream_copy_to_uint64_big_endian(
       ( (luksde_volume_header_v2_t *) data )->header_offset,
       value_64bit );
      libcnotify_printf(
       "%s: header offset\t\t\t: %" PRIu64 "\n",
       function,
       value_64bit );

      libcnotify_printf(
       "%s: padding1:\n",
       function );
      libcnotify_print_data(
       ( (luksde_volume_header_v2_t *) data )->padding1,
       184,
       LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );

      libcnotify_printf(
       "%s: checksum:\n",
       function );
      libcnotify_print_data(
       ( (luksde_volume_header_v2_t *) data )->checksum,
       64,
       0 );

      libcnotify_printf(
       "%s: padding2:\n",
       function );
      libcnotify_print_data(
       ( (luksde_volume_header_v2_t *) data )->padding2,
       3584,
       LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );
    }
    libcnotify_printf(
     "\n" );
  }
#endif /* defined( HAVE_DEBUG_OUTPUT ) */

  if( volume_header->format_version == 1 )
  {
    if( libluksde_volume_parse_encryption_method(
         volume_header,
         ( (luksde_volume_header_v1_t *) data )->encryption_method,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_RUNTIME,
       LIBCERROR_RUNTIME_ERROR_GET_FAILED,
       "%s: unable to parse encryption method.",
       function );

      goto on_error;
    }
    if( libluksde_volume_parse_encryption_mode(
         volume_header,
         ( (luksde_volume_header_v1_t *) data )->encryption_mode,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_RUNTIME,
       LIBCERROR_RUNTIME_ERROR_GET_FAILED,
       "%s: unable to parse encryption mode.",
       function );

      goto on_error;
    }
    if( libluksde_volume_parse_hashing_method(
         volume_header,
         ( (luksde_volume_header_v1_t *) data )->hashing_method,
         error ) != 1 )
    {
      libcerror_error_set(
       error,
       LIBCERROR_ERROR_DOMAIN_RUNTIME,
       LIBCERROR_RUNTIME_ERROR_GET_FAILED,
       "%s: unable to parse hashing method.",
       function );

      goto on_error;
    }
    data_offset = sizeof( luksde_volume_header_v1_t );

    for( key_slot_index = 0;
         key_slot_index < 8;
         key_slot_index++ )
    {
      if( libluksde_key_slot_initialize(
           &key_slot,
           error ) != 1 )
      {
        libcerror_error_set(
         error,
         LIBCERROR_ERROR_DOMAIN_RUNTIME,
         LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
         "%s: unable to create key slot.",
         function );

        goto on_error;
      }
      if( libluksde_key_slot_read_data(
           key_slot,
           &( data[ data_offset ] ),
           sizeof( luksde_volume_keyslot_t ),
           error ) != 1 )
      {
        libcerror_error_set(
         error,
         LIBCERROR_ERROR_DOMAIN_IO,
         LIBCERROR_IO_ERROR_READ_FAILED,
         "%s: unable to read key slot data.",
         function );

        goto on_error;
      }
      if( libcdata_array_append_entry(
           volume_header->key_slots_array,
           &entry_index,
           (intptr_t *) key_slot,
           error ) != 1 )
      {
        libcerror_error_set(
         error,
         LIBCERROR_ERROR_DOMAIN_RUNTIME,
         LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
         "%s: unable to append key slot to key slots array.",
         function );

        goto on_error;
      }
      key_slot = NULL;

      data_offset += sizeof( luksde_volume_keyslot_t );
    }
  }
  return( 1 );

on_error:
  if( key_slot != NULL )
  {
    libluksde_key_slot_free(
     &key_slot,
     NULL );
  }
  if( guid != NULL )
  {
    libfguid_identifier_free(
     &guid,
     NULL );
  }
  libcdata_array_empty(
   volume_header->key_slots_array,
   (int(*)(intptr_t **, libcerror_error_t **)) &libluksde_key_slot_free,
   NULL );

  return( -1 );
}

/* Reads the volume header
 * Returns 1 if successful or -1 on error
 */
int libluksde_volume_header_read_file_io_handle(
     libluksde_volume_header_t *volume_header,
     libbfio_handle_t *file_io_handle,
     off64_t file_offset,
     libcerror_error_t **error )
{
  uint8_t volume_header_data[ 4096 ];

  static char *function = "libluksde_volume_header_read_file_io_handle";
  ssize_t read_count    = 0;

  if( volume_header == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid volume header.",
     function );

    return( -1 );
  }
#if defined( HAVE_DEBUG_OUTPUT )
  if( libcnotify_verbose != 0 )
  {
    libcnotify_printf(
     "%s: reading volume header at offset: %" PRIi64 " (0x%08" PRIx64 ")\n",
     function,
     file_offset,
     file_offset );
  }
#endif
  read_count = libbfio_handle_read_buffer_at_offset(
                file_io_handle,
                volume_header_data,
                4096,
                file_offset,
                error );

  if( read_count != (ssize_t) 4096 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_IO,
     LIBCERROR_IO_ERROR_READ_FAILED,
     "%s: unable to read volume header data at offset: %" PRIi64 " (0x%08" PRIx64 ").",
     function,
     file_offset,
     file_offset );

    return( -1 );
  }
  if( libluksde_volume_header_read_data(
       volume_header,
       volume_header_data,
       4096,
       error ) != 1 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_IO,
     LIBCERROR_IO_ERROR_READ_FAILED,
     "%s: unable to read volume header.",
     function );

    return( -1 );
  }
  return( 1 );
}

/* Retrieves the format version
 * Returns 1 if successful or -1 on error
 */
int libluksde_volume_header_get_format_version(
     libluksde_volume_header_t *volume_header,
     uint16_t *format_version,
     libcerror_error_t **error )
{
  static char *function = "libluksde_volume_header_get_format_version";

  if( volume_header == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid volume header.",
     function );

    return( -1 );
  }
  if( format_version == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid format version.",
     function );

    return( -1 );
  }
  *format_version = volume_header->format_version;

  return( 1 );
}

/* Retrieves the volume identifier
 * The identifier is an UUID and is 16 bytes of size
 * Returns 1 if successful or -1 on error
 */
int libluksde_volume_header_get_volume_identifier(
     libluksde_volume_header_t *volume_header,
     uint8_t *uuid_data,
     size_t uuid_data_size,
     libcerror_error_t **error )
{
  static char *function = "libluksde_volume_header_get_volume_identifier";

  if( volume_header == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid volume header.",
     function );

    return( -1 );
  }
  if( uuid_data == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid UUID data.",
     function );

    return( -1 );
  }
  if( uuid_data_size < 16 )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
     "%s: invalid UUID data value too small.",
     function );

    return( -1 );
  }
  if( memory_copy(
       uuid_data,
       volume_header->volume_identifier,
       16 ) == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_MEMORY,
     LIBCERROR_MEMORY_ERROR_COPY_FAILED,
     "%s: unable to set volume identifier.",
     function );

    return( -1 );
  }
  return( 1 );
}


Coverage Report

Created: 2026-05-30 07:13