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

#ifdef KERNEL_STATIC
#include "inc_vendor.h"
#include "inc_types.h"
#include "inc_common.cl"
#include "inc_hash_sha1.cl"
#endif

#define COMPARE_S "inc_comp_single.cl"
#define COMPARE_M "inc_comp_multi.cl"

typedef struct androidpin_tmp
{
  u32 digest_buf[5];

} androidpin_tmp_t;

CONSTANT_AS CONSTSPEC u32a c_pc_dec[1024] =
{
  0x00000030,
  0x00000031,
  0x00000032,
  0x00000033,
  0x00000034,
  0x00000035,
  0x00000036,
  0x00000037,
  0x00000038,
  0x00000039,
  0x00003031,
  0x00003131,
  0x00003231,
  0x00003331,
  0x00003431,
  0x00003531,
  0x00003631,
  0x00003731,
  0x00003831,
  0x00003931,
  0x00003032,
  0x00003132,
  0x00003232,
  0x00003332,
  0x00003432,
  0x00003532,
  0x00003632,
  0x00003732,
  0x00003832,
  0x00003932,
  0x00003033,
  0x00003133,
  0x00003233,
  0x00003333,
  0x00003433,
  0x00003533,
  0x00003633,
  0x00003733,
  0x00003833,
  0x00003933,
  0x00003034,
  0x00003134,
  0x00003234,
  0x00003334,
  0x00003434,
  0x00003534,
  0x00003634,
  0x00003734,
  0x00003834,
  0x00003934,
  0x00003035,
  0x00003135,
  0x00003235,
  0x00003335,
  0x00003435,
  0x00003535,
  0x00003635,
  0x00003735,
  0x00003835,
  0x00003935,
  0x00003036,
  0x00003136,
  0x00003236,
  0x00003336,
  0x00003436,
  0x00003536,
  0x00003636,
  0x00003736,
  0x00003836,
  0x00003936,
  0x00003037,
  0x00003137,
  0x00003237,
  0x00003337,
  0x00003437,
  0x00003537,
  0x00003637,
  0x00003737,
  0x00003837,
  0x00003937,
  0x00003038,
  0x00003138,
  0x00003238,
  0x00003338,
  0x00003438,
  0x00003538,
  0x00003638,
  0x00003738,
  0x00003838,
  0x00003938,
  0x00003039,
  0x00003139,
  0x00003239,
  0x00003339,
  0x00003439,
  0x00003539,
  0x00003639,
  0x00003739,
  0x00003839,
  0x00003939,
  0x00303031,
  0x00313031,
  0x00323031,
  0x00333031,
  0x00343031,
  0x00353031,
  0x00363031,
  0x00373031,
  0x00383031,
  0x00393031,
  0x00303131,
  0x00313131,
  0x00323131,
  0x00333131,
  0x00343131,
  0x00353131,
  0x00363131,
  0x00373131,
  0x00383131,
  0x00393131,
  0x00303231,
  0x00313231,
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  0x00353231,
  0x00363231,
  0x00373231,
  0x00383231,
  0x00393231,
  0x00303331,
  0x00313331,
  0x00323331,
  0x00333331,
  0x00343331,
  0x00353331,
  0x00363331,
  0x00373331,
  0x00383331,
  0x00393331,
  0x00303431,
  0x00313431,
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  0x00353431,
  0x00363431,
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  0x00383431,
  0x00393431,
  0x00303531,
  0x00313531,
  0x00323531,
  0x00333531,
  0x00343531,
  0x00353531,
  0x00363531,
  0x00373531,
  0x00383531,
  0x00393531,
  0x00303631,
  0x00313631,
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  0x00303731,
  0x00313731,
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  0x00383731,
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  0x00303831,
  0x00313831,
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  0x00333831,
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  0x00353831,
  0x00363831,
  0x00373831,
  0x00383831,
  0x00393831,
  0x00303931,
  0x00313931,
  0x00323931,
  0x00333931,
  0x00343931,
  0x00353931,
  0x00363931,
  0x00373931,
  0x00383931,
  0x00393931,
  0x00303032,
  0x00313032,
  0x00323032,
  0x00333032,
  0x00343032,
  0x00353032,
  0x00363032,
  0x00373032,
  0x00383032,
  0x00393032,
  0x00303132,
  0x00313132,
  0x00323132,
  0x00333132,
  0x00343132,
  0x00353132,
  0x00363132,
  0x00373132,
  0x00383132,
  0x00393132,
  0x00303232,
  0x00313232,
  0x00323232,
  0x00333232,
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  0x00363232,
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  0x00303033,
  0x00313033,
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  0x00333033,
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  0x00353033,
  0x00363033,
  0x00373033,
  0x00383033,
  0x00393033,
  0x00303133,
  0x00313133,
  0x00323133,
  0x00333133,
  0x00343133,
  0x00353133,
  0x00363133,
  0x00373133,
  0x00383133,
  0x00393133,
  0x00303233,
  0x00313233,
  0x00323233,
  0x00333233,
  0x00343233,
  0x00353233,
  0x00363233,
  0x00373233,
  0x00383233,
  0x00393233,
  0x00303333,
  0x00313333,
  0x00323333,
  0x00333333,
  0x00343333,
  0x00353333,
  0x00363333,
  0x00373333,
  0x00383333,
  0x00393333,
  0x00303433,
  0x00313433,
  0x00323433,
  0x00333433,
  0x00343433,
  0x00353433,
  0x00363433,
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  0x00383433,
  0x00393433,
  0x00303533,
  0x00313533,
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  0x00303633,
  0x00313633,
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  0x00393633,
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  0x00313733,
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  0x00313034,
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  0x00303134,
  0x00313134,
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  0x00333134,
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  0x00383134,
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  0x00303234,
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  0x00313334,
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  0x00323938,
  0x00333938,
  0x00343938,
  0x00353938,
  0x00363938,
  0x00373938,
  0x00383938,
  0x00393938,
  0x00303039,
  0x00313039,
  0x00323039,
  0x00333039,
  0x00343039,
  0x00353039,
  0x00363039,
  0x00373039,
  0x00383039,
  0x00393039,
  0x00303139,
  0x00313139,
  0x00323139,
  0x00333139,
  0x00343139,
  0x00353139,
  0x00363139,
  0x00373139,
  0x00383139,
  0x00393139,
  0x00303239,
  0x00313239,
  0x00323239,
  0x00333239,
  0x00343239,
  0x00353239,
  0x00363239,
  0x00373239,
  0x00383239,
  0x00393239,
  0x00303339,
  0x00313339,
  0x00323339,
  0x00333339,
  0x00343339,
  0x00353339,
  0x00363339,
  0x00373339,
  0x00383339,
  0x00393339,
  0x00303439,
  0x00313439,
  0x00323439,
  0x00333439,
  0x00343439,
  0x00353439,
  0x00363439,
  0x00373439,
  0x00383439,
  0x00393439,
  0x00303539,
  0x00313539,
  0x00323539,
  0x00333539,
  0x00343539,
  0x00353539,
  0x00363539,
  0x00373539,
  0x00383539,
  0x00393539,
  0x00303639,
  0x00313639,
  0x00323639,
  0x00333639,
  0x00343639,
  0x00353639,
  0x00363639,
  0x00373639,
  0x00383639,
  0x00393639,
  0x00303739,
  0x00313739,
  0x00323739,
  0x00333739,
  0x00343739,
  0x00353739,
  0x00363739,
  0x00373739,
  0x00383739,
  0x00393739,
  0x00303839,
  0x00313839,
  0x00323839,
  0x00333839,
  0x00343839,
  0x00353839,
  0x00363839,
  0x00373839,
  0x00383839,
  0x00393839,
  0x00303939,
  0x00313939,
  0x00323939,
  0x00333939,
  0x00343939,
  0x00353939,
  0x00363939,
  0x00373939,
  0x00383939,
  0x00393939,
  0x30303031,
  0x31303031,
  0x32303031,
  0x33303031,
  0x34303031,
  0x35303031,
  0x36303031,
  0x37303031,
  0x38303031,
  0x39303031,
  0x30313031,
  0x31313031,
  0x32313031,
  0x33313031,
  0x34313031,
  0x35313031,
  0x36313031,
  0x37313031,
  0x38313031,
  0x39313031,
  0x30323031,
  0x31323031,
  0x32323031,
  0x33323031,
};

CONSTANT_AS CONSTSPEC u32a c_pc_len[1024] =
{
  1,
  1,
  1,
  1,
  1,
  1,
  1,
  1,
  1,
  1,
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  2,
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  2,
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  2,
  2,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
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  3,
  3,
  3,
  3,
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  3,
  3,
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  3,
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  3,
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  3,
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  3,
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  3,
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  3,
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  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
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  3,
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  3,
  3,
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  3,
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  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
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  3,
  3,
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  3,
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  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
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  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  3,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4
};

DECLSPEC static void append_word (u32 *w0, u32 *w1, const u32 *append, const u32 offset)
{
  switch (offset)
  {
    case 1:
      w0[0] = w0[0]           | append[0] <<  8;
      w0[1] = append[0] >> 24 | append[1] <<  8;
      w0[2] = append[1] >> 24 | append[2] <<  8;
      w0[3] = append[2] >> 24 | append[3] <<  8;
      break;

    case 2:
      w0[0] = w0[0]           | append[0] << 16;
      w0[1] = append[0] >> 16 | append[1] << 16;
      w0[2] = append[1] >> 16 | append[2] << 16;
      w0[3] = append[2] >> 16 | append[3] << 16;
      break;

    case 3:
      w0[0] = w0[0]           | append[0] << 24;
      w0[1] = append[0] >>  8 | append[1] << 24;
      w0[2] = append[1] >>  8 | append[2] << 24;
      w0[3] = append[2] >>  8 | append[3] << 24;
      break;

    case 4:
      w0[1] = append[0];
      w0[2] = append[1];
      w0[3] = append[2];
      w1[0] = append[3];
      break;
  }
}

DECLSPEC static void append_salt (u32 *w0, u32 *w1, u32 *w2, const u32 *append, const u32 offset)
{
  u32 tmp0;
  u32 tmp1;
  u32 tmp2;
  u32 tmp3;
  u32 tmp4;
  u32 tmp5;

  const int offset_mod_4 = offset & 3;

  const int offset_minus_4 = 4 - offset_mod_4;

  #if defined IS_AMD || defined IS_GENERIC
  u32 in0 = append[0];
  u32 in1 = append[1];
  u32 in2 = append[2];
  u32 in3 = append[3];
  u32 in4 = append[4];

  tmp0 = hc_bytealign (  0, in0, offset);
  tmp1 = hc_bytealign (in0, in1, offset);
  tmp2 = hc_bytealign (in1, in2, offset);
  tmp3 = hc_bytealign (in2, in3, offset);
  tmp4 = hc_bytealign (in3, in4, offset);
  tmp5 = hc_bytealign (in4,   0, offset);
  #endif

  #ifdef IS_NV
  const int selector = (0x76543210 >> (offset_minus_4 * 4)) & 0xffff;

  u32 in0 = append[0];
  u32 in1 = append[1];
  u32 in2 = append[2];
  u32 in3 = append[3];
  u32 in4 = append[4];

  tmp0 = hc_byte_perm (  0, in0, selector);
  tmp1 = hc_byte_perm (in0, in1, selector);
  tmp2 = hc_byte_perm (in1, in2, selector);
  tmp3 = hc_byte_perm (in2, in3, selector);
  tmp4 = hc_byte_perm (in3, in4, selector);
  tmp5 = hc_byte_perm (in4,   0, selector);
  #endif

  const u32 div = offset / 4;

  switch (div)
  {
    case  0:  w0[0] |= tmp0;
              w0[1]  = tmp1;
              w0[2]  = tmp2;
              w0[3]  = tmp3;
              w1[0]  = tmp4;
              w1[1]  = tmp5;
              break;
    case  1:  w0[1] |= tmp0;
              w0[2]  = tmp1;
              w0[3]  = tmp2;
              w1[0]  = tmp3;
              w1[1]  = tmp4;
              w1[2]  = tmp5;
              break;
    case  2:  w0[2] |= tmp0;
              w0[3]  = tmp1;
              w1[0]  = tmp2;
              w1[1]  = tmp3;
              w1[2]  = tmp4;
              w1[3]  = tmp5;
              break;
    case  3:  w0[3] |= tmp0;
              w1[0]  = tmp1;
              w1[1]  = tmp2;
              w1[2]  = tmp3;
              w1[3]  = tmp4;
              w2[0]  = tmp5;
              break;
    case  4:  w1[0] |= tmp0;
              w1[1]  = tmp1;
              w1[2]  = tmp2;
              w1[3]  = tmp3;
              w2[0]  = tmp4;
              w2[1]  = tmp5;
              break;
  }
}

KERNEL_FQ void m05800_init (KERN_ATTR_TMPS (androidpin_tmp_t))
{
  /**
   * base
   */

  const u64 gid = get_global_id (0);

  if (gid >= gid_max) return;

  u32 word_buf[4];

  word_buf[0] = pws[gid].i[ 0];
  word_buf[1] = pws[gid].i[ 1];
  word_buf[2] = pws[gid].i[ 2];
  word_buf[3] = pws[gid].i[ 3];

  const u32 pw_len = pws[gid].pw_len & 63;

  /**
   * salt
   */

  u32 salt_len = salt_bufs[salt_pos].salt_len;

  u32 salt_buf[5];

  salt_buf[0] = salt_bufs[salt_pos].salt_buf[0];
  salt_buf[1] = salt_bufs[salt_pos].salt_buf[1];
  salt_buf[2] = salt_bufs[salt_pos].salt_buf[2];
  salt_buf[3] = salt_bufs[salt_pos].salt_buf[3];
  salt_buf[4] = salt_bufs[salt_pos].salt_buf[4];

  /**
   * init
   */

  const u32 pc_len = 1;
  const u32 pc_dec = 0x30;

  u32 data0[4] = { 0, 0, 0, 0 };
  u32 data1[4] = { 0, 0, 0, 0 };
  u32 data2[4] = { 0, 0, 0, 0 };

  data0[0] = pc_dec;

  append_word (data0, data1, word_buf, pc_len);

  append_salt (data0, data1, data2, salt_buf, pc_len + pw_len);

  u32 w0[4];
  u32 w1[4];
  u32 w2[4];
  u32 w3[4];

  w0[0] = hc_swap32_S (data0[0]);
  w0[1] = hc_swap32_S (data0[1]);
  w0[2] = hc_swap32_S (data0[2]);
  w0[3] = hc_swap32_S (data0[3]);
  w1[0] = hc_swap32_S (data1[0]);
  w1[1] = hc_swap32_S (data1[1]);
  w1[2] = hc_swap32_S (data1[2]);
  w1[3] = hc_swap32_S (data1[3]);
  w2[0] = hc_swap32_S (data2[0]);
  w2[1] = hc_swap32_S (data2[1]);
  w2[2] = 0;
  w2[3] = 0;
  w3[0] = 0;
  w3[1] = 0;
  w3[2] = 0;
  w3[3] = (pc_len + pw_len + salt_len) * 8;

  u32 digest[5];

  digest[0] = SHA1M_A;
  digest[1] = SHA1M_B;
  digest[2] = SHA1M_C;
  digest[3] = SHA1M_D;
  digest[4] = SHA1M_E;

  sha1_transform (w0, w1, w2, w3, digest);

  tmps[gid].digest_buf[0] = digest[0];
  tmps[gid].digest_buf[1] = digest[1];
  tmps[gid].digest_buf[2] = digest[2];
  tmps[gid].digest_buf[3] = digest[3];
  tmps[gid].digest_buf[4] = digest[4];
}

KERNEL_FQ void m05800_loop (KERN_ATTR_TMPS (androidpin_tmp_t))
{
  /**
   * base
   */

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

  /**
   * cache precomputed conversion table in shared memory
   */

  LOCAL_AS u32 s_pc_dec[1024];
  LOCAL_AS u32 s_pc_len[1024];

  for (u32 i = lid; i < 1024; i += lsz)
  {
    s_pc_dec[i] = c_pc_dec[i];
    s_pc_len[i] = c_pc_len[i];
  }

  barrier (CLK_LOCAL_MEM_FENCE);

  if (gid >= gid_max) return;

  /**
   * base
   */

  u32 word_buf[4];

  word_buf[0] = pws[gid].i[ 0];
  word_buf[1] = pws[gid].i[ 1];
  word_buf[2] = pws[gid].i[ 2];
  word_buf[3] = pws[gid].i[ 3];

  const u32 pw_len = pws[gid].pw_len & 63;

  u32 digest[5];

  digest[0] = tmps[gid].digest_buf[0];
  digest[1] = tmps[gid].digest_buf[1];
  digest[2] = tmps[gid].digest_buf[2];
  digest[3] = tmps[gid].digest_buf[3];
  digest[4] = tmps[gid].digest_buf[4];

  /**
   * salt
   */

  u32 salt_len = salt_bufs[salt_pos].salt_len;

  u32 salt_buf[5];

  salt_buf[0] = salt_bufs[salt_pos].salt_buf[0];
  salt_buf[1] = salt_bufs[salt_pos].salt_buf[1];
  salt_buf[2] = salt_bufs[salt_pos].salt_buf[2];
  salt_buf[3] = salt_bufs[salt_pos].salt_buf[3];
  salt_buf[4] = salt_bufs[salt_pos].salt_buf[4];

  /**
   * loop
   */

  for (u32 i = 0, j = loop_pos + 1; i < loop_cnt; i++, j++)
  {
    const u32 pc_dec = s_pc_dec[j];
    const u32 pc_len = s_pc_len[j];

    u32 data0[4] = { 0, 0, 0, 0 };
    u32 data1[4] = { 0, 0, 0, 0 };
    u32 data2[4] = { 0, 0, 0, 0 };

    data0[0] = pc_dec;

    append_word (data0, data1, word_buf, pc_len);

    append_salt (data0, data1, data2, salt_buf, pc_len + pw_len);

    u32 w0[4];
    u32 w1[4];
    u32 w2[4];
    u32 w3[4];

    w0[0] = digest[0];
    w0[1] = digest[1];
    w0[2] = digest[2];
    w0[3] = digest[3];
    w1[0] = digest[4];
    w1[1] = hc_swap32_S (data0[0]);
    w1[2] = hc_swap32_S (data0[1]);
    w1[3] = hc_swap32_S (data0[2]);
    w2[0] = hc_swap32_S (data0[3]);
    w2[1] = hc_swap32_S (data1[0]);
    w2[2] = hc_swap32_S (data1[1]);
    w2[3] = hc_swap32_S (data1[2]);
    w3[0] = hc_swap32_S (data1[3]);
    w3[1] = hc_swap32_S (data2[0]);
    w3[2] = 0;
    w3[3] = (20 + pc_len + pw_len + salt_len) * 8;

    digest[0] = SHA1M_A;
    digest[1] = SHA1M_B;
    digest[2] = SHA1M_C;
    digest[3] = SHA1M_D;
    digest[4] = SHA1M_E;

    sha1_transform (w0, w1, w2, w3, digest);
  }

  tmps[gid].digest_buf[0] = digest[0];
  tmps[gid].digest_buf[1] = digest[1];
  tmps[gid].digest_buf[2] = digest[2];
  tmps[gid].digest_buf[3] = digest[3];
  tmps[gid].digest_buf[4] = digest[4];
}

KERNEL_FQ void m05800_comp (KERN_ATTR_TMPS (androidpin_tmp_t))
{
  /**
   * modifier
   */

  const u64 gid = get_global_id (0);

  if (gid >= gid_max) return;

  const u64 lid = get_local_id (0);

  /**
   * digest
   */

  const u32 r0 = tmps[gid].digest_buf[DGST_R0];
  const u32 r1 = tmps[gid].digest_buf[DGST_R1];
  const u32 r2 = tmps[gid].digest_buf[DGST_R2];
  const u32 r3 = tmps[gid].digest_buf[DGST_R3];

  #define il_pos 0

  #ifdef KERNEL_STATIC
  #include COMPARE_M
  #endif
}