prosody
16cf863b36c0
util-src/hashes.c

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util-src/hashes.c @ 11928:16cf863b36c0

mod_csi_simple: Skip initiating flush in all but inactive state Both in the flushing and active states the right thing to do is skip directly to returning the data. Also in any unknown state, like if the filter is somehow left behind on module unload.
author Kim Alvefur <zash@zash.se>
date Sat, 20 Nov 2021 23:54:43 +0100
parent 11562:0becc168f4f9
child 12559:865631ebb9f2
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rev   line source
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1 /* Prosody IM
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2 -- Copyright (C) 2009-2010 Matthew Wild
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3 -- Copyright (C) 2009-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8 */
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9
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10 /*
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11 * hashes.c
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12 * Lua library for sha1, sha256 and md5 hashes
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13 */
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14
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15 #include <string.h>
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16 #include <stdlib.h>
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17
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18 #ifdef _MSC_VER
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19 typedef unsigned __int32 uint32_t;
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20 #else
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21 #include <inttypes.h>
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22 #endif
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23
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24 #include "lua.h"
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25 #include "lauxlib.h"
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26 #include <openssl/crypto.h>
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27 #include <openssl/sha.h>
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28 #include <openssl/md5.h>
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29 #include <openssl/hmac.h>
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30 #include <openssl/evp.h>
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31
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32 #if (LUA_VERSION_NUM == 501)
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33 #define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
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34 #endif
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35
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36 #define HMAC_IPAD 0x36363636
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37 #define HMAC_OPAD 0x5c5c5c5c
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38
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39 static const char *hex_tab = "0123456789abcdef";
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40 static void toHex(const unsigned char *in, int length, unsigned char *out) {
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41 int i;
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43 for(i = 0; i < length; i++) {
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44 out[i * 2] = hex_tab[(in[i] >> 4) & 0xF];
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45 out[i * 2 + 1] = hex_tab[(in[i]) & 0xF];
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46 }
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47 }
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48
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49 #define MAKE_HASH_FUNCTION(myFunc, func, size) \
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50 static int myFunc(lua_State *L) { \
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51 size_t len; \
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52 const char *s = luaL_checklstring(L, 1, &len); \
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53 int hex_out = lua_toboolean(L, 2); \
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54 unsigned char hash[size], result[size*2]; \
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55 func((const unsigned char*)s, len, hash); \
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56 if (hex_out) { \
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57 toHex(hash, size, result); \
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58 lua_pushlstring(L, (char*)result, size*2); \
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59 } else { \
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60 lua_pushlstring(L, (char*)hash, size);\
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61 } \
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62 return 1; \
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63 }
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64
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65 MAKE_HASH_FUNCTION(Lsha1, SHA1, SHA_DIGEST_LENGTH)
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66 MAKE_HASH_FUNCTION(Lsha224, SHA224, SHA224_DIGEST_LENGTH)
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67 MAKE_HASH_FUNCTION(Lsha256, SHA256, SHA256_DIGEST_LENGTH)
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68 MAKE_HASH_FUNCTION(Lsha384, SHA384, SHA384_DIGEST_LENGTH)
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69 MAKE_HASH_FUNCTION(Lsha512, SHA512, SHA512_DIGEST_LENGTH)
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70 MAKE_HASH_FUNCTION(Lmd5, MD5, MD5_DIGEST_LENGTH)
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71
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72 struct hash_desc {
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73 int (*Init)(void *);
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74 int (*Update)(void *, const void *, size_t);
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75 int (*Final)(unsigned char *, void *);
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76 size_t digestLength;
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77 void *ctx, *ctxo;
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78 };
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79
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80 #define MAKE_HMAC_FUNCTION(myFunc, evp, size, type) \
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81 static int myFunc(lua_State *L) { \
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82 unsigned char hash[size], result[2*size]; \
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83 size_t key_len, msg_len; \
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84 unsigned int out_len; \
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85 const char *key = luaL_checklstring(L, 1, &key_len); \
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86 const char *msg = luaL_checklstring(L, 2, &msg_len); \
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87 const int hex_out = lua_toboolean(L, 3); \
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88 HMAC(evp(), key, key_len, (const unsigned char*)msg, msg_len, (unsigned char*)hash, &out_len); \
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89 if (hex_out) { \
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90 toHex(hash, out_len, result); \
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91 lua_pushlstring(L, (char*)result, out_len*2); \
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92 } else { \
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93 lua_pushlstring(L, (char*)hash, out_len); \
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94 } \
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95 return 1; \
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96 }
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97
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98 MAKE_HMAC_FUNCTION(Lhmac_sha1, EVP_sha1, SHA_DIGEST_LENGTH, SHA_CTX)
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99 MAKE_HMAC_FUNCTION(Lhmac_sha256, EVP_sha256, SHA256_DIGEST_LENGTH, SHA256_CTX)
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100 MAKE_HMAC_FUNCTION(Lhmac_sha512, EVP_sha512, SHA512_DIGEST_LENGTH, SHA512_CTX)
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101 MAKE_HMAC_FUNCTION(Lhmac_md5, EVP_md5, MD5_DIGEST_LENGTH, MD5_CTX)
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102
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103 static int Lpbkdf2_sha1(lua_State *L) {
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104 unsigned char out[SHA_DIGEST_LENGTH];
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105
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106 size_t pass_len, salt_len;
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107 const char *pass = luaL_checklstring(L, 1, &pass_len);
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108 const unsigned char *salt = (unsigned char *)luaL_checklstring(L, 2, &salt_len);
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109 const int iter = luaL_checkinteger(L, 3);
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110
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111 if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, EVP_sha1(), SHA_DIGEST_LENGTH, out) == 0) {
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112 return luaL_error(L, "PKCS5_PBKDF2_HMAC() failed");
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113 }
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114
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115 lua_pushlstring(L, (char *)out, SHA_DIGEST_LENGTH);
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116
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117 return 1;
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118 }
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119
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120
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121 static int Lpbkdf2_sha256(lua_State *L) {
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122 unsigned char out[SHA256_DIGEST_LENGTH];
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123
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124 size_t pass_len, salt_len;
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125 const char *pass = luaL_checklstring(L, 1, &pass_len);
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126 const unsigned char *salt = (unsigned char *)luaL_checklstring(L, 2, &salt_len);
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127 const int iter = luaL_checkinteger(L, 3);
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128
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129 if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, EVP_sha256(), SHA256_DIGEST_LENGTH, out) == 0) {
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130 return luaL_error(L, "PKCS5_PBKDF2_HMAC() failed");
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131 }
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132
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133 lua_pushlstring(L, (char *)out, SHA256_DIGEST_LENGTH);
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134 return 1;
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135 }
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136
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137 static int Lhash_equals(lua_State *L) {
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138 size_t len1, len2;
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139 const char *s1 = luaL_checklstring(L, 1, &len1);
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140 const char *s2 = luaL_checklstring(L, 2, &len2);
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141 if(len1 == len2) {
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142 lua_pushboolean(L, CRYPTO_memcmp(s1, s2, len1) == 0);
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143 } else {
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144 lua_pushboolean(L, 0);
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145 }
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146 return 1;
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147 }
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148
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149 static const luaL_Reg Reg[] = {
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150 { "sha1", Lsha1 },
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151 { "sha224", Lsha224 },
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152 { "sha256", Lsha256 },
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153 { "sha384", Lsha384 },
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154 { "sha512", Lsha512 },
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155 { "md5", Lmd5 },
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156 { "hmac_sha1", Lhmac_sha1 },
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157 { "hmac_sha256", Lhmac_sha256 },
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158 { "hmac_sha512", Lhmac_sha512 },
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159 { "hmac_md5", Lhmac_md5 },
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160 { "scram_Hi_sha1", Lpbkdf2_sha1 }, /* COMPAT */
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161 { "pbkdf2_hmac_sha1", Lpbkdf2_sha1 },
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162 { "pbkdf2_hmac_sha256", Lpbkdf2_sha256 },
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163 { "equals", Lhash_equals },
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164 { NULL, NULL }
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165 };
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166
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167 LUALIB_API int luaopen_util_hashes(lua_State *L) {
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168 #if (LUA_VERSION_NUM > 501)
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169 luaL_checkversion(L);
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170 #endif
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171 lua_newtable(L);
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172 luaL_setfuncs(L, Reg, 0);
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173 lua_pushliteral(L, "-3.14");
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174 lua_setfield(L, -2, "version");
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175 #ifdef OPENSSL_VERSION
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176 lua_pushstring(L, OpenSSL_version(OPENSSL_VERSION));
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177 lua_setfield(L, -2, "_LIBCRYPTO_VERSION");
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178 #endif
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179 return 1;
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180 }