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

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

static const u32   ATTACK_EXEC    = ATTACK_EXEC_OUTSIDE_KERNEL;
static const u32   DGST_POS0      = 0;
static const u32   DGST_POS1      = 1;
static const u32   DGST_POS2      = 2;
static const u32   DGST_POS3      = 3;
static const u32   DGST_SIZE      = DGST_SIZE_4_4;
static const u32   HASH_CATEGORY  = HASH_CATEGORY_ARCHIVE;
static const char *HASH_NAME      = "WinZip";
static const u64   KERN_TYPE      = 13600;
static const u32   OPTI_TYPE      = OPTI_TYPE_ZERO_BYTE
                                  | OPTI_TYPE_SLOW_HASH_SIMD_LOOP;
static const u64   OPTS_TYPE      = OPTS_TYPE_STOCK_MODULE
                                  | OPTS_TYPE_PT_GENERATE_LE;
static const u32   SALT_TYPE      = SALT_TYPE_EMBEDDED;
static const char *ST_PASS        = "hashcat";
static const char *ST_HASH        = "$zip2$*0*1*0*0675369741458183*5dc5*0**36b85538918416712640*$/zip2$";

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;       }
u32         module_hash_category  (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_CATEGORY;   }
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;       }
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;       }
u32         module_salt_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 SALT_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;         }
const char *module_st_pass        (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_PASS;         }

typedef struct pbkdf2_sha1_tmp
{
  u32  ipad[5];
  u32  opad[5];

  u32  dgst[32];
  u32  out[32];

} pbkdf2_sha1_tmp_t;

typedef struct zip2
{
  u32 type;
  u32 mode;
  u32 magic;
  u32 salt_len;
  u32 salt_buf[4];
  u32 verify_bytes;
  u32 compress_length;
  u32 data_len;
  u32 data_buf[0x200000];
  u32 auth_len;
  u32 auth_buf[4];

} zip2_t;

static const char *SIGNATURE_ZIP2_START = "$zip2$";
static const char *SIGNATURE_ZIP2_STOP  = "$/zip2$";
static const int   ROUNDS_ZIP2          = 1000;

u64 module_esalt_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)
{
  const u64 esalt_size = (const u64) sizeof (zip2_t);

  return esalt_size;
}

u64 module_tmp_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)
{
  const u64 tmp_size = (const u64) sizeof (pbkdf2_sha1_tmp_t);

  return tmp_size;
}

u32 module_kernel_loops_min (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
  const u32 kernel_loops_min = ROUNDS_ZIP2 - 1;

  return kernel_loops_min;
}

u32 module_kernel_loops_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
  const u32 kernel_loops_max = ROUNDS_ZIP2 - 1;

  return kernel_loops_max;
}

u32 module_pw_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
  // this overrides the reductions of PW_MAX in case optimized kernel is selected
  // IOW, even in optimized kernel mode it support length 256

  const u32 pw_max = PW_MAX;

  return pw_max;
}

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, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
{
  u32 *digest = (u32 *) digest_buf;

  zip2_t *zip2 = (zip2_t *) esalt_buf;

  hc_token_t token;

  memset (&token, 0, sizeof (hc_token_t));

  token.token_cnt  = 10;

  token.signatures_cnt    = 2;
  token.signatures_buf[0] = SIGNATURE_ZIP2_START;
  token.signatures_buf[1] = SIGNATURE_ZIP2_STOP;

  token.sep[0]     = '*';
  token.len[0]     = 6;
  token.attr[0]    = TOKEN_ATTR_FIXED_LENGTH
                   | TOKEN_ATTR_VERIFY_SIGNATURE;

  token.sep[1]     = '*';
  token.len[1]     = 1;
  token.attr[1]    = TOKEN_ATTR_FIXED_LENGTH
                   | TOKEN_ATTR_VERIFY_DIGIT;

  token.sep[2]     = '*';
  token.len[2]     = 1;
  token.attr[2]    = TOKEN_ATTR_FIXED_LENGTH
                   | TOKEN_ATTR_VERIFY_DIGIT;

  token.sep[3]     = '*';
  token.len[3]     = 1;
  token.attr[3]    = TOKEN_ATTR_FIXED_LENGTH
                   | TOKEN_ATTR_VERIFY_DIGIT;

  token.sep[4]     = '*';
  token.len_min[4] = 16;
  token.len_max[4] = 32;
  token.attr[4]    = TOKEN_ATTR_VERIFY_LENGTH
                   | TOKEN_ATTR_VERIFY_HEX;

  token.sep[5]     = '*';
  token.len_min[5] = 1;
  token.len_max[5] = 6;
  token.attr[5]    = TOKEN_ATTR_VERIFY_LENGTH
                   | TOKEN_ATTR_VERIFY_HEX;

  token.sep[6]     = '*';
  token.len_min[6] = 1;
  token.len_max[6] = 6;
  token.attr[6]    = TOKEN_ATTR_VERIFY_LENGTH
                   | TOKEN_ATTR_VERIFY_HEX;

  token.sep[7]     = '*';
  token.len_min[7] = 0;
  token.len_max[7] = 0x200000 * 4 * 2;
  token.attr[7]    = TOKEN_ATTR_VERIFY_LENGTH
                   | TOKEN_ATTR_VERIFY_HEX;

  token.sep[8]     = '*';
  token.len[8]     = 20;
  token.attr[8]    = TOKEN_ATTR_FIXED_LENGTH
                   | TOKEN_ATTR_VERIFY_HEX;

  token.sep[9]     = '*';
  token.len[9]     = 7;
  token.attr[9]    = TOKEN_ATTR_FIXED_LENGTH
                   | TOKEN_ATTR_VERIFY_SIGNATURE;

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

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

  // type

  const u8 *type_pos = token.buf[1];

  const u32 type = hc_strtoul ((const char *) type_pos, NULL, 10);

  if (type != 0) return (PARSER_SALT_VALUE);

  zip2->type = type;

  // mode

  const u8 *mode_pos = token.buf[2];

  const u32 mode = hc_strtoul ((const char *) mode_pos, NULL, 10);

  zip2->mode = mode;

  // magic

  const u8 *magic_pos = token.buf[3];

  const u32 magic = hc_strtoul ((const char *) magic_pos, NULL, 10);

  if (magic != 0) return (PARSER_SALT_VALUE);

  zip2->magic = magic;

  // verify_bytes

  const u8 *verify_bytes_pos = token.buf[5];

  u32 verify_bytes;

  if (sscanf ((const char *) verify_bytes_pos, "%4x*", &verify_bytes) == EOF)
  {
    return (PARSER_SALT_VALUE);
  }

  if (verify_bytes >= 0x10000) return (PARSER_SALT_VALUE);

  zip2->verify_bytes = verify_bytes;

  // compress_length

  const u8 *compress_length_pos = token.buf[6];

  const u32 compress_length = hc_strtoul ((const char *) compress_length_pos, NULL, 16);

  zip2->compress_length = compress_length;

  // salt

  const u8 *salt_pos = token.buf[4];
  const int salt_len = token.len[4];

  if (mode == 1)
  {
    if (salt_len != 16) return (PARSER_SALT_VALUE);

    zip2->salt_buf[0] = hex_to_u32 (&salt_pos[ 0]);
    zip2->salt_buf[1] = hex_to_u32 (&salt_pos[ 8]);
    zip2->salt_buf[2] = 0;
    zip2->salt_buf[3] = 0;

    zip2->salt_len = 8;
  }
  else if (mode == 2)
  {
    if (salt_len != 24) return (PARSER_SALT_VALUE);

    zip2->salt_buf[0] = hex_to_u32 (&salt_pos[ 0]);
    zip2->salt_buf[1] = hex_to_u32 (&salt_pos[ 8]);
    zip2->salt_buf[2] = hex_to_u32 (&salt_pos[16]);
    zip2->salt_buf[3] = 0;

    zip2->salt_len = 12;
  }
  else if (mode == 3)
  {
    if (salt_len != 32) return (PARSER_SALT_VALUE);

    zip2->salt_buf[0] = hex_to_u32 (&salt_pos[ 0]);
    zip2->salt_buf[1] = hex_to_u32 (&salt_pos[ 8]);
    zip2->salt_buf[2] = hex_to_u32 (&salt_pos[16]);
    zip2->salt_buf[3] = hex_to_u32 (&salt_pos[24]);

    zip2->salt_len = 16;
  }
  else
  {
    return (PARSER_SALT_VALUE);
  }

  // data

  const u8 *data_buf = token.buf[7];
  const int data_len = token.len[7];

  u8 *data_buf_ptr = (u8 *) zip2->data_buf;

  for (int i = 0; i < data_len; i += 2)
  {
    const u8 p0 = data_buf[i + 0];
    const u8 p1 = data_buf[i + 1];

    *data_buf_ptr++ = hex_convert (p1) << 0
                    | hex_convert (p0) << 4;

    zip2->data_len++;
  }

  *data_buf_ptr = 0x80;

  // auth

  const u8 *auth_buf = token.buf[8];
  const int auth_len = token.len[8];

  u8 *auth_ptr = (u8 *) zip2->auth_buf;

  for (int i = 0; i < auth_len; i += 2)
  {
    const u8 p0 = auth_buf[i + 0];
    const u8 p1 = auth_buf[i + 1];

    *auth_ptr++ = hex_convert (p1) << 0
                | hex_convert (p0) << 4;

    zip2->auth_len++;
  }

  /**
   * salt buf (fake)
   */

  salt->salt_buf[0] = zip2->salt_buf[0];
  salt->salt_buf[1] = zip2->salt_buf[1];
  salt->salt_buf[2] = zip2->salt_buf[2];
  salt->salt_buf[3] = zip2->salt_buf[3];
  salt->salt_buf[4] = zip2->data_buf[0];
  salt->salt_buf[5] = zip2->data_buf[1];
  salt->salt_buf[6] = zip2->data_buf[2];
  salt->salt_buf[7] = zip2->data_buf[3];

  salt->salt_len = 32;

  salt->salt_iter = ROUNDS_ZIP2 - 1;

  /**
   * digest buf (fake)
   */

  digest[0] = zip2->auth_buf[0];
  digest[1] = zip2->auth_buf[1];
  digest[2] = zip2->auth_buf[2];
  digest[3] = zip2->auth_buf[3];

  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, MAYBE_UNUSED const void *hook_salt_buf, MAYBE_UNUSED const hashinfo_t *hash_info, char *line_buf, MAYBE_UNUSED const int line_size)
{
  const zip2_t *zip2 = (const zip2_t *) esalt_buf;

  const u32 salt_len = zip2->salt_len;

  char salt_tmp[32 + 1] = { 0 };

  for (u32 i = 0, j = 0; i < salt_len; i += 1, j += 2)
  {
    const u8 *ptr = (const u8 *) zip2->salt_buf;

    snprintf (salt_tmp + j, 3, "%02x", ptr[i]);
  }

  const u32 data_len = zip2->data_len;

  char *data_tmp = (char *) hccalloc (1, (data_len * 2) + 1);

  for (u32 i = 0, j = 0; i < data_len; i += 1, j += 2)
  {
    const u8 *ptr = (const u8 *) zip2->data_buf;

    snprintf (data_tmp + j, 3, "%02x", ptr[i]);
  }

  const u32 auth_len = zip2->auth_len;

  char auth_tmp[20 + 1] = { 0 };

  for (u32 i = 0, j = 0; i < auth_len; i += 1, j += 2)
  {
    const u8 *ptr = (const u8 *) zip2->auth_buf;

    snprintf (auth_tmp + j, 3, "%02x", ptr[i]);
  }

  const int line_len = snprintf (line_buf, line_size, "%s*%u*%u*%u*%s*%x*%x*%s*%s*%s",
    SIGNATURE_ZIP2_START,
    zip2->type,
    zip2->mode,
    zip2->magic,
    salt_tmp,
    zip2->verify_bytes,
    zip2->compress_length,
    data_tmp,
    auth_tmp,
    SIGNATURE_ZIP2_STOP);

  hcfree (data_tmp);

  return line_len;
}

void module_init (module_ctx_t *module_ctx)
{
  module_ctx->module_context_size             = MODULE_CONTEXT_SIZE_CURRENT;
  module_ctx->module_interface_version        = MODULE_INTERFACE_VERSION_CURRENT;

  module_ctx->module_attack_exec              = module_attack_exec;
  module_ctx->module_benchmark_esalt          = MODULE_DEFAULT;
  module_ctx->module_benchmark_hook_salt      = MODULE_DEFAULT;
  module_ctx->module_benchmark_mask           = MODULE_DEFAULT;
  module_ctx->module_benchmark_charset        = MODULE_DEFAULT;
  module_ctx->module_benchmark_salt           = MODULE_DEFAULT;
  module_ctx->module_build_plain_postprocess  = MODULE_DEFAULT;
  module_ctx->module_deep_comp_kernel         = MODULE_DEFAULT;
  module_ctx->module_deprecated_notice        = MODULE_DEFAULT;
  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_dictstat_disable         = MODULE_DEFAULT;
  module_ctx->module_esalt_size               = module_esalt_size;
  module_ctx->module_extra_buffer_size        = MODULE_DEFAULT;
  module_ctx->module_extra_tmp_size           = MODULE_DEFAULT;
  module_ctx->module_extra_tuningdb_block     = MODULE_DEFAULT;
  module_ctx->module_forced_outfile_format    = MODULE_DEFAULT;
  module_ctx->module_hash_binary_count        = MODULE_DEFAULT;
  module_ctx->module_hash_binary_parse        = MODULE_DEFAULT;
  module_ctx->module_hash_binary_save         = MODULE_DEFAULT;
  module_ctx->module_hash_decode_postprocess  = MODULE_DEFAULT;
  module_ctx->module_hash_decode_potfile      = MODULE_DEFAULT;
  module_ctx->module_hash_decode_zero_hash    = MODULE_DEFAULT;
  module_ctx->module_hash_decode              = module_hash_decode;
  module_ctx->module_hash_encode_status       = MODULE_DEFAULT;
  module_ctx->module_hash_encode_potfile      = MODULE_DEFAULT;
  module_ctx->module_hash_encode              = module_hash_encode;
  module_ctx->module_hash_init_selftest       = MODULE_DEFAULT;
  module_ctx->module_hash_mode                = MODULE_DEFAULT;
  module_ctx->module_hash_category            = module_hash_category;
  module_ctx->module_hash_name                = module_hash_name;
  module_ctx->module_hashes_count_min         = MODULE_DEFAULT;
  module_ctx->module_hashes_count_max         = MODULE_DEFAULT;
  module_ctx->module_hlfmt_disable            = MODULE_DEFAULT;
  module_ctx->module_hook_extra_param_size    = MODULE_DEFAULT;
  module_ctx->module_hook_extra_param_init    = MODULE_DEFAULT;
  module_ctx->module_hook_extra_param_term    = MODULE_DEFAULT;
  module_ctx->module_hook12                   = MODULE_DEFAULT;
  module_ctx->module_hook23                   = MODULE_DEFAULT;
  module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
  module_ctx->module_hook_size                = MODULE_DEFAULT;
  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
  module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
  module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
  module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
  module_ctx->module_kernel_loops_max         = module_kernel_loops_max;
  module_ctx->module_kernel_loops_min         = module_kernel_loops_min;
  module_ctx->module_kernel_threads_max       = MODULE_DEFAULT;
  module_ctx->module_kernel_threads_min       = MODULE_DEFAULT;
  module_ctx->module_kern_type                = module_kern_type;
  module_ctx->module_kern_type_dynamic        = MODULE_DEFAULT;
  module_ctx->module_opti_type                = module_opti_type;
  module_ctx->module_opts_type                = module_opts_type;
  module_ctx->module_outfile_check_disable    = MODULE_DEFAULT;
  module_ctx->module_outfile_check_nocomp     = MODULE_DEFAULT;
  module_ctx->module_potfile_custom_check     = MODULE_DEFAULT;
  module_ctx->module_potfile_disable          = MODULE_DEFAULT;
  module_ctx->module_potfile_keep_all_hashes  = MODULE_DEFAULT;
  module_ctx->module_pwdump_column            = MODULE_DEFAULT;
  module_ctx->module_pw_max                   = module_pw_max;
  module_ctx->module_pw_min                   = MODULE_DEFAULT;
  module_ctx->module_salt_max                 = MODULE_DEFAULT;
  module_ctx->module_salt_min                 = MODULE_DEFAULT;
  module_ctx->module_salt_type                = module_salt_type;
  module_ctx->module_separator                = MODULE_DEFAULT;
  module_ctx->module_st_hash                  = module_st_hash;
  module_ctx->module_st_pass                  = module_st_pass;
  module_ctx->module_tmp_size                 = module_tmp_size;
  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
  module_ctx->module_warmup_disable           = MODULE_DEFAULT;
}