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

//#define NEW_SIMD_CODE

#ifdef KERNEL_STATIC
#include M2S(INCLUDE_PATH/inc_vendor.h)
#include M2S(INCLUDE_PATH/inc_types.h)
#include M2S(INCLUDE_PATH/inc_platform.cl)
#include M2S(INCLUDE_PATH/inc_common.cl)
#include M2S(INCLUDE_PATH/inc_rp.h)
#include M2S(INCLUDE_PATH/inc_rp.cl)
#include M2S(INCLUDE_PATH/inc_scalar.cl)
#include M2S(INCLUDE_PATH/inc_hash_sha1.cl)
#endif

KERNEL_FQ void m08300_mxx (KERN_ATTR_RULES ())
{
  /**
   * modifier
   */

  const u64 lid = get_local_id (0);
  const u64 gid = get_global_id (0);

  if (gid >= GID_CNT) return;

  /**
   * base
   */

  COPY_PW (pws[gid]);

  const u32 salt_len = salt_bufs[SALT_POS_HOST].salt_len;

  u32 s[64] = { 0 };

  for (u32 i = 0, idx = 0; i < salt_len; i += 4, idx += 1)
  {
    s[idx] = hc_swap32_S (salt_bufs[SALT_POS_HOST].salt_buf[idx]);
  }

  const u32 salt_len_pc = salt_bufs[SALT_POS_HOST].salt_len_pc;

  u32 s_pc[64] = { 0 };

  for (int i = 0, idx = 0; i < salt_len_pc; i += 4, idx += 1)
  {
    s_pc[idx] = hc_swap32_S (salt_bufs[SALT_POS_HOST].salt_buf_pc[idx]);
  }

  const u32 salt_iter = salt_bufs[SALT_POS_HOST].salt_iter;

  /**
   * loop
   */

  for (u32 il_pos = 0; il_pos < IL_CNT; il_pos++)
  {
    pw_t tmp = PASTE_PW;

    tmp.pw_len = apply_rules (rules_buf[il_pos].cmds, tmp.i, tmp.pw_len);

    sha1_ctx_t ctx1;

    sha1_init (&ctx1);

    // replace "." with the length:

    if (tmp.pw_len > 0)
    {
      u32 len = 0;

      for (int pos = tmp.pw_len - 1; pos >= 0; pos--)
      {
        const u32 div = pos  / 4;
        const u32 mod = pos  & 3;
        const u32 sht = mod << 3;

        if (((tmp.i[div] >> sht) & 0xff) == 0x2e) // '.'
        {
          tmp.i[div] += (len - 0x2e) << sht;

          len = 0;

          continue;
        }

        len++;
      }

      ctx1.w0[0] = (len & 0xff) << 24;

      ctx1.len = 1;

      sha1_update_swap (&ctx1, tmp.i, tmp.pw_len);
    }

    sha1_update (&ctx1, s_pc, salt_len_pc + 1);

    sha1_update (&ctx1, s, salt_len);

    sha1_final (&ctx1);

    u32 digest[5];

    digest[0] = ctx1.h[0];
    digest[1] = ctx1.h[1];
    digest[2] = ctx1.h[2];
    digest[3] = ctx1.h[3];
    digest[4] = ctx1.h[4];

    // iterations

    for (u32 i = 0; i < salt_iter; i++)
    {
      sha1_ctx_t ctx;

      sha1_init (&ctx);

      ctx.w0[0] = digest[0];
      ctx.w0[1] = digest[1];
      ctx.w0[2] = digest[2];
      ctx.w0[3] = digest[3];
      ctx.w1[0] = digest[4];

      ctx.len = 20;

      sha1_update (&ctx, s, salt_len);

      sha1_final (&ctx);

      digest[0] = ctx.h[0];
      digest[1] = ctx.h[1];
      digest[2] = ctx.h[2];
      digest[3] = ctx.h[3];
      digest[4] = ctx.h[4];
    }

    const u32 r0 = digest[DGST_R0];
    const u32 r1 = digest[DGST_R1];
    const u32 r2 = digest[DGST_R2];
    const u32 r3 = digest[DGST_R3];

    COMPARE_M_SCALAR (r0, r1, r2, r3);
  }
}

KERNEL_FQ void m08300_sxx (KERN_ATTR_RULES ())
{
  /**
   * modifier
   */

  const u64 lid = get_local_id (0);
  const u64 gid = get_global_id (0);

  if (gid >= GID_CNT) return;

  /**
   * digest
   */

  const u32 search[4] =
  {
    digests_buf[DIGESTS_OFFSET_HOST].digest_buf[DGST_R0],
    digests_buf[DIGESTS_OFFSET_HOST].digest_buf[DGST_R1],
    digests_buf[DIGESTS_OFFSET_HOST].digest_buf[DGST_R2],
    digests_buf[DIGESTS_OFFSET_HOST].digest_buf[DGST_R3]
  };

  /**
   * base
   */

  COPY_PW (pws[gid]);

  const u32 salt_len = salt_bufs[SALT_POS_HOST].salt_len;

  u32 s[64] = { 0 };

  for (u32 i = 0, idx = 0; i < salt_len; i += 4, idx += 1)
  {
    s[idx] = hc_swap32_S (salt_bufs[SALT_POS_HOST].salt_buf[idx]);
  }

  const u32 salt_len_pc = salt_bufs[SALT_POS_HOST].salt_len_pc;

  u32 s_pc[64] = { 0 };

  for (int i = 0, idx = 0; i < salt_len_pc; i += 4, idx += 1)
  {
    s_pc[idx] = hc_swap32_S (salt_bufs[SALT_POS_HOST].salt_buf_pc[idx]);
  }

  const u32 salt_iter = salt_bufs[SALT_POS_HOST].salt_iter;

  /**
   * loop
   */

  for (u32 il_pos = 0; il_pos < IL_CNT; il_pos++)
  {
    pw_t tmp = PASTE_PW;

    tmp.pw_len = apply_rules (rules_buf[il_pos].cmds, tmp.i, tmp.pw_len);

    sha1_ctx_t ctx1;

    sha1_init (&ctx1);

    // replace "." with the length:

    if (tmp.pw_len > 0)
    {
      u32 len = 0;

      for (int pos = tmp.pw_len - 1; pos >= 0; pos--)
      {
        const u32 div = pos  / 4;
        const u32 mod = pos  & 3;
        const u32 sht = mod << 3;

        if (((tmp.i[div] >> sht) & 0xff) == 0x2e) // '.'
        {
          tmp.i[div] += (len - 0x2e) << sht;

          len = 0;

          continue;
        }

        len++;
      }

      ctx1.w0[0] = (len & 0xff) << 24;

      ctx1.len = 1;

      sha1_update_swap (&ctx1, tmp.i, tmp.pw_len);
    }

    sha1_update (&ctx1, s_pc, salt_len_pc + 1);

    sha1_update (&ctx1, s, salt_len);

    sha1_final (&ctx1);

    u32 digest[5];

    digest[0] = ctx1.h[0];
    digest[1] = ctx1.h[1];
    digest[2] = ctx1.h[2];
    digest[3] = ctx1.h[3];
    digest[4] = ctx1.h[4];

    // iterations

    for (u32 i = 0; i < salt_iter; i++)
    {
      sha1_ctx_t ctx;

      sha1_init (&ctx);

      ctx.w0[0] = digest[0];
      ctx.w0[1] = digest[1];
      ctx.w0[2] = digest[2];
      ctx.w0[3] = digest[3];
      ctx.w1[0] = digest[4];

      ctx.len = 20;

      sha1_update (&ctx, s, salt_len);

      sha1_final (&ctx);

      digest[0] = ctx.h[0];
      digest[1] = ctx.h[1];
      digest[2] = ctx.h[2];
      digest[3] = ctx.h[3];
      digest[4] = ctx.h[4];
    }

    const u32 r0 = digest[DGST_R0];
    const u32 r1 = digest[DGST_R1];
    const u32 r2 = digest[DGST_R2];
    const u32 r3 = digest[DGST_R3];

    COMPARE_S_SCALAR (r0, r1, r2, r3);
  }
}
