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7cc2d8a8ae97
util-src/hashes.c

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util-src/hashes.c @ 416:7cc2d8a8ae97

Added util-src/hashes.c - support for sha1, sha256 and md5 hashes
author Waqas Hussain <waqas20@gmail.com>
date Wed, 26 Nov 2008 01:46:16 +0500
child 417:d60e63379284
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416
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1 /*
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2 * xxpath.c
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3 * An implementation of a subset of xpath for Lua 5.1
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4 * Waqas Hussain <waqas20@gmail.com>
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5 * 05 Oct 2008 15:28:15
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6 */
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7
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8 #include <string.h>
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9
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10 #include "lua.h"
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11 #include "lauxlib.h"
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12 #include <openssl/sha.h>
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13 #include <openssl/md5.h>
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14
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15 /*//typedef unsigned int uint32;
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16 #define uint32 unsigned int
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17
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18 #define chrsz 8
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19 #define hexcase 0
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20
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21 uint32 safe_add(uint32 x, uint32 y) {
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22 uint32 lsw = (x & 0xFFFF) + (y & 0xFFFF);
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23 uint32 msw = (x >> 16) + (y >> 16) + (lsw >> 16);
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24 return (msw << 16) | (lsw & 0xFFFF);
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25 }
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27 uint32 S (uint32 X, uint32 n) { return ( X >> n ) | (X << (32 - n)); }
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28 uint32 R (uint32 X, uint32 n) { return ( X >> n ); }
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29 uint32 Ch(uint32 x, uint32 y, uint32 z) { return ((x & y) ^ ((~x) & z)); }
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30 uint32 Maj(uint32 x, uint32 y, uint32 z) { return ((x & y) ^ (x & z) ^ (y & z)); }
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31 uint32 Sigma0256(uint32 x) { return (S(x, 2) ^ S(x, 13) ^ S(x, 22)); }
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32 uint32 Sigma1256(uint32 x) { return (S(x, 6) ^ S(x, 11) ^ S(x, 25)); }
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33 uint32 Gamma0256(uint32 x) { return (S(x, 7) ^ S(x, 18) ^ R(x, 3)); }
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34 uint32 Gamma1256(uint32 x) { return (S(x, 17) ^ S(x, 19) ^ R(x, 10)); }
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35
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36 static const uint32 K[64] = {0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5, 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5, 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3, 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174, 0xE49B69C1, 0xEFBE4786, 0xFC19DC6, 0x240CA1CC, 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA, 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7, 0xC6E00BF3, 0xD5A79147, 0x6CA6351, 0x14292967, 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13, 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85, 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3, 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070, 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5, 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3, 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208, 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2};
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37
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38 void core_sha256 (char* m, uint32 l, uint32 m_length, uint32 out[8]) {
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39
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40 uint32 HASH[8] = {0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19};
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41 uint32 W[64];
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42 uint32 a, b, c, d, e, f, g, h, i, j;
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43 uint32 T1, T2;
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44 //uint32 i, j;
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45 printf("core_sha256: start\n");
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46
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47 m[l >> 5] |= 0x80 << (24 - l % 32);
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48 m[((l + 64 >> 9) << 4) + 15] = l;
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49
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50 printf("core_sha256: 1\n");
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51 for ( i = 0; i<m_length; i+=16 ) {
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52 a = HASH[0];
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53 b = HASH[1];
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54 c = HASH[2];
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55 d = HASH[3];
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56 e = HASH[4];
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57 f = HASH[5];
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58 g = HASH[6];
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59 h = HASH[7];
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60
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61 for ( j = 0; j<64; j++) {
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62 if (j < 16) W[j] = m[j + i];
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63 else W[j] = safe_add(safe_add(safe_add(Gamma1256(W[j - 2]), W[j - 7]), Gamma0256(W[j - 15])), W[j - 16]);
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64
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65 T1 = safe_add(safe_add(safe_add(safe_add(h, Sigma1256(e)), Ch(e, f, g)), K[j]), W[j]);
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66 T2 = safe_add(Sigma0256(a), Maj(a, b, c));
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67
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68 h = g;
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69 g = f;
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70 f = e;
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71 e = safe_add(d, T1);
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72 d = c;
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73 c = b;
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74 b = a;
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75 a = safe_add(T1, T2);
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76 }
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77
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78 HASH[0] = safe_add(a, HASH[0]);
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79 HASH[1] = safe_add(b, HASH[1]);
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80 HASH[2] = safe_add(c, HASH[2]);
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81 HASH[3] = safe_add(d, HASH[3]);
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82 HASH[4] = safe_add(e, HASH[4]);
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83 HASH[5] = safe_add(f, HASH[5]);
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84 HASH[6] = safe_add(g, HASH[6]);
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85 HASH[7] = safe_add(h, HASH[7]);
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86 }
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87 printf("core_sha256: 2\n");
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88
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89 out[0] = HASH[0];
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90 out[1] = HASH[1];
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91 out[2] = HASH[2];
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92 out[3] = HASH[3];
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93 out[4] = HASH[4];
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94 out[5] = HASH[5];
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95 out[6] = HASH[6];
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96 out[7] = HASH[7];
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97
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98 printf("core_sha256: end\n");
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99 }
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100
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101 void binb2hex (const uint32 binarray[8], char str[65]) {
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102 const char* hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
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103 uint32 pos = 0;
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104 int i;
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105 printf("binb2hex: start\n");
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106 //var str = "";
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107 for(i = 0; i < 8 * 4; i++) {
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108 str[pos++] = hex_tab[(binarray[i>>2] >> ((3 - i%4)*8+4)) & 0xF];
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109 str[pos++] = hex_tab[(binarray[i>>2] >> ((3 - i%4)*8 )) & 0xF];
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110 }
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111 //return str;
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112 str[64] = 0;
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113 printf("binb2hex: end\n");
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114 }
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115
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116 static void sha256(const char* s, uint32 s_length, char output[65]) {
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117 uint32 hash[8];
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118 char* copy;
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119
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120 printf("sha256: start\n");
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121
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122 copy = (char*) malloc(s_length + 1);
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123 strcpy(copy, s);
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124 core_sha256(copy, s_length * chrsz, s_length, hash);
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125 free(copy);
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126
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127 binb2hex(hash, output);
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128
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129 printf("sha256: end\n");
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130
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131
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132
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133 //s = Utf8Encode(s);
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134 //return binb2hex(core_sha256(str2binb(s), s.length * chrsz));
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135
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136 }
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137 */
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138
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139 //static int Lsha256(lua_State *L) /** sha256(s) */
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140 /*{
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141 size_t l;
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142 const char *s = luaL_checklstring(L, 1, &l);
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143 int len = strlen(s);
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144 char hash[32];
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145 char result[65];
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146
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147 //sha256(s, len, hash);
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148 SHA256(s, len, hash);
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149 toHex(hash, 32, result);
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150
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151 //printf("input: %s, length: %d, outlen: %d\n", s, len, strlen(result));
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152
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153 lua_pushstring(L, result);
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154 return 1;
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155 }*/
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156
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157
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158 const char* hex_tab = "0123456789abcdef";
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159 void toHex(const char* in, int length, char* out) {
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160 int i;
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161 for (i = 0; i < length; i++) {
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162 out[i*2] = hex_tab[(in[i] >> 4) & 0xF];
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163 out[i*2+1] = hex_tab[(in[i]) & 0xF];
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164 }
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165 //out[i*2] = 0;
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166 }
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167
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168 #define MAKE_HASH_FUNCTION(myFunc, func, size) \
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169 static int myFunc(lua_State *L) { \
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170 size_t len; \
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171 const char *s = luaL_checklstring(L, 1, &len); \
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172 int hex_out = lua_toboolean(L, 2); \
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173 char hash[size]; \
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174 char result[size*2]; \
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175 func(s, len, hash); \
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176 if (hex_out) { \
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177 toHex(hash, size, result); \
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178 lua_pushlstring(L, result, size*2); \
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179 } else { \
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180 lua_pushlstring(L, hash, size);\
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181 } \
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182 return 1; \
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183 }
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184
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185 MAKE_HASH_FUNCTION(Lsha1, SHA1, 20)
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186 MAKE_HASH_FUNCTION(Lsha256, SHA256, 32)
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187 MAKE_HASH_FUNCTION(Lmd5, MD5, 16)
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188
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189 static const luaL_Reg Reg[] =
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190 {
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191 { "sha1", Lsha1 },
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192 { "sha256", Lsha256 },
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193 { "md5", Lmd5 },
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194 { NULL, NULL }
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195 };
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196
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197 LUALIB_API int luaopen_hashes(lua_State *L)
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198 {
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199 luaL_register(L, "hashes", Reg);
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200 lua_pushliteral(L, "version"); /** version */
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201 lua_pushliteral(L, "-3.14");
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202 lua_settable(L,-3);
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203 return 1;
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204 }