/**
 * Author......: See docs/credits.txt
 * License.....: MIT
 */

#include "common.h"
#include "types.h"
#include "modules.h"
#include "bitops.h"
#include "convert.h"
#include "interface.h"
#include "shared.h"

static const u32   ATTACK_EXEC  = ATTACK_EXEC_INSIDE_KERNEL;
static const u32   DGST_POS0    = 0;
static const u32   DGST_POS1    = 3;
static const u32   DGST_POS2    = 2;
static const u32   DGST_POS3    = 1;
static const u32   DGST_SIZE    = DGST_SIZE_4_4;
static const char *HASH_NAME    = "NTLM";
static const u32   HASH_TYPE    = HASH_TYPE_MD4;
static const u64   KERN_TYPE    = 1000;
static const u32   OPTI_TYPE    = OPTI_TYPE_ZERO_BYTE
                                | OPTI_TYPE_PRECOMPUTE_INIT
                                | OPTI_TYPE_PRECOMPUTE_MERKLE
                                | OPTI_TYPE_MEET_IN_MIDDLE
                                | OPTI_TYPE_EARLY_SKIP
                                | OPTI_TYPE_NOT_ITERATED
                                | OPTI_TYPE_NOT_SALTED
                                | OPTI_TYPE_RAW_HASH;
static const u32   OPTS_TYPE    = OPTS_TYPE_PT_GENERATE_LE
                                | OPTS_TYPE_PT_ADD80
                                | OPTS_TYPE_PT_ADDBITS14
                                | OPTS_TYPE_PT_UTF16LE;
static const char *ST_HASH      = "b4b9b02e6f09a9bd760f388b67351e2b";

u32         module_attack_exec  (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ATTACK_EXEC; }
u32         module_dgst_pos0    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS0;   }
u32         module_dgst_pos1    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS1;   }
u32         module_dgst_pos2    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS2;   }
u32         module_dgst_pos3    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS3;   }
u32         module_dgst_size    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_SIZE;   }
const char *module_hash_name    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_NAME;   }
u32         module_hash_type    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_TYPE;   }
u64         module_kern_type    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return KERN_TYPE;   }
u32         module_opti_type    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTI_TYPE;   }
u64         module_opts_type    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTS_TYPE;   }
const char *module_st_hash      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH;     }

int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, const char *line_buf, MAYBE_UNUSED const int line_len)
{
  u32 *digest = (u32 *) digest_buf;

  token_t token;

  token.token_cnt  = 1;

  token.len_min[0] = 32;
  token.len_max[0] = 32;
  token.attr[0]    = TOKEN_ATTR_VERIFY_LENGTH
                   | TOKEN_ATTR_VERIFY_HEX;

  const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);

  if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);

  const u8 *hash_pos = token.buf[0];

  digest[0] = hex_to_u32 (hash_pos +  0);
  digest[1] = hex_to_u32 (hash_pos +  8);
  digest[2] = hex_to_u32 (hash_pos + 16);
  digest[3] = hex_to_u32 (hash_pos + 24);

  decoder_apply_options (hashconfig, digest);

  decoder_apply_optimizer (hashconfig, digest);

  return (PARSER_OK);
}

int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const void *digest_buf, MAYBE_UNUSED const salt_t *salt, MAYBE_UNUSED const void *esalt_buf, char *line_buf, MAYBE_UNUSED const int line_size)
{
  const u32 *digest = (const u32 *) digest_buf;

  // we can not change anything in the original buffer, otherwise destroying sorting
  // therefore create some local buffer

  u32 tmp[4];

  tmp[0] = digest[0];
  tmp[1] = digest[1];
  tmp[2] = digest[2];
  tmp[3] = digest[3];

  encoder_apply_optimizer (hashconfig, tmp);

  encoder_apply_options (hashconfig, tmp);

  u8 *out_buf = (u8 *) line_buf;

  u32_to_hex (tmp[0], out_buf +  0);
  u32_to_hex (tmp[1], out_buf +  8);
  u32_to_hex (tmp[2], out_buf + 16);
  u32_to_hex (tmp[3], out_buf + 24);

  const int out_len = 32;

  return out_len;
}

void module_register (module_ctx_t *module_ctx)
{
  // undefined functions automatically call corresponding default functions

  module_ctx->module_attack_exec            = module_attack_exec;
  module_ctx->module_benchmark_esalt        = NULL;
  module_ctx->module_benchmark_hook_salt    = NULL;
  module_ctx->module_benchmark_mask         = NULL;
  module_ctx->module_benchmark_salt         = NULL;
  module_ctx->module_dgst_pos0              = module_dgst_pos0;
  module_ctx->module_dgst_pos1              = module_dgst_pos1;
  module_ctx->module_dgst_pos2              = module_dgst_pos2;
  module_ctx->module_dgst_pos3              = module_dgst_pos3;
  module_ctx->module_dgst_size              = module_dgst_size;
  module_ctx->module_esalt_size             = NULL;
  module_ctx->module_forced_kernel_threads  = NULL;
  module_ctx->module_forced_kernel_loops    = NULL;
  module_ctx->module_hash_decode            = module_hash_decode;
  module_ctx->module_hash_encode            = module_hash_encode;
  module_ctx->module_hash_mode              = NULL;
  module_ctx->module_hash_name              = module_hash_name;
  module_ctx->module_hash_type              = module_hash_type;
  module_ctx->module_hook_salt_size         = NULL;
  module_ctx->module_hook_size              = NULL;
  module_ctx->module_kern_type              = module_kern_type;
  module_ctx->module_opti_type              = module_opti_type;
  module_ctx->module_opts_type              = module_opts_type;
  module_ctx->module_pw_max                 = NULL;
  module_ctx->module_pw_min                 = NULL;
  module_ctx->module_salt_max               = NULL;
  module_ctx->module_salt_min               = NULL;
  module_ctx->module_salt_type              = NULL;
  module_ctx->module_separator              = NULL;
  module_ctx->module_st_hash                = module_st_hash;
  module_ctx->module_st_pass                = NULL;
  module_ctx->module_tmp_size               = NULL;
  module_ctx->module_warmup_disable         = NULL;
}