prosody
ce8291e89d67
util-src/hashes.c

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util-src/hashes.c @ 11405:ce8291e89d67

mod_http_file_share: Remove correct entries when not all expired files were deleted If any of the expired files could not be deleted then we should not forget about that, we should complain loudly and try again. The code got this backwards and would have removed only the entries referring to still existing files. Test procedure: 1. Upload a file 2. chown root:root http_file_share/ 3. In uploads.list, decrease 'when' enough to ensure expiry 4. Reload mod_http_file_share 5. Should see an error in the logs about failure to delete the file 6. Should see that the metadata in uploads.list is still there 7. chown http_file_share/ back to the previous owner 8. Reload mod_http_file_share 9. Should see logs about successful removal of expired file 10. Should see that the metadata in uploads.list is gone 11. Should see that the file was deleted
author Kim Alvefur <zash@zash.se>
date Thu, 25 Feb 2021 23:58:08 +0100
parent 10748:93293891709b
child 11560:3bbb1af92514
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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b7049746bd29 Update copyright headers for 2010
Matthew Wild <mwild1@gmail.com>
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diff changeset
1 /* Prosody IM
b7049746bd29 Update copyright headers for 2010
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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/sha.h>
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27 #include <openssl/md5.h>
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28 #include <openssl/hmac.h>
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29 #include <openssl/evp.h>
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30
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31 #if (LUA_VERSION_NUM == 501)
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32 #define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
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33 #endif
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34
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35 #define HMAC_IPAD 0x36363636
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36 #define HMAC_OPAD 0x5c5c5c5c
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37
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38 static const char *hex_tab = "0123456789abcdef";
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39 static void toHex(const unsigned char *in, int length, unsigned char *out) {
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40 int i;
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42 for(i = 0; i < length; i++) {
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43 out[i * 2] = hex_tab[(in[i] >> 4) & 0xF];
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44 out[i * 2 + 1] = hex_tab[(in[i]) & 0xF];
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45 }
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46 }
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47
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48 #define MAKE_HASH_FUNCTION(myFunc, func, size) \
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49 static int myFunc(lua_State *L) { \
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50 size_t len; \
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51 const char *s = luaL_checklstring(L, 1, &len); \
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52 int hex_out = lua_toboolean(L, 2); \
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53 unsigned char hash[size], result[size*2]; \
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54 func((const unsigned char*)s, len, hash); \
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55 if (hex_out) { \
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56 toHex(hash, size, result); \
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57 lua_pushlstring(L, (char*)result, size*2); \
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58 } else { \
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59 lua_pushlstring(L, (char*)hash, size);\
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60 } \
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61 return 1; \
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62 }
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63
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64 MAKE_HASH_FUNCTION(Lsha1, SHA1, SHA_DIGEST_LENGTH)
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65 MAKE_HASH_FUNCTION(Lsha224, SHA224, SHA224_DIGEST_LENGTH)
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66 MAKE_HASH_FUNCTION(Lsha256, SHA256, SHA256_DIGEST_LENGTH)
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67 MAKE_HASH_FUNCTION(Lsha384, SHA384, SHA384_DIGEST_LENGTH)
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68 MAKE_HASH_FUNCTION(Lsha512, SHA512, SHA512_DIGEST_LENGTH)
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69 MAKE_HASH_FUNCTION(Lmd5, MD5, MD5_DIGEST_LENGTH)
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70
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71 struct hash_desc {
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72 int (*Init)(void *);
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73 int (*Update)(void *, const void *, size_t);
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74 int (*Final)(unsigned char *, void *);
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75 size_t digestLength;
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76 void *ctx, *ctxo;
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77 };
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78
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79 #define MAKE_HMAC_FUNCTION(myFunc, evp, size, type) \
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80 static int myFunc(lua_State *L) { \
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81 unsigned char hash[size], result[2*size]; \
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82 size_t key_len, msg_len; \
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83 unsigned int out_len; \
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84 const char *key = luaL_checklstring(L, 1, &key_len); \
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85 const char *msg = luaL_checklstring(L, 2, &msg_len); \
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86 const int hex_out = lua_toboolean(L, 3); \
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87 HMAC(evp(), key, key_len, (const unsigned char*)msg, msg_len, (unsigned char*)hash, &out_len); \
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88 if (hex_out) { \
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89 toHex(hash, out_len, result); \
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90 lua_pushlstring(L, (char*)result, out_len*2); \
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91 } else { \
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92 lua_pushlstring(L, (char*)hash, out_len); \
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93 } \
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94 return 1; \
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95 }
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96
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97 MAKE_HMAC_FUNCTION(Lhmac_sha1, EVP_sha1, SHA_DIGEST_LENGTH, SHA_CTX)
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98 MAKE_HMAC_FUNCTION(Lhmac_sha256, EVP_sha256, SHA256_DIGEST_LENGTH, SHA256_CTX)
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99 MAKE_HMAC_FUNCTION(Lhmac_sha512, EVP_sha512, SHA512_DIGEST_LENGTH, SHA512_CTX)
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100 MAKE_HMAC_FUNCTION(Lhmac_md5, EVP_md5, MD5_DIGEST_LENGTH, MD5_CTX)
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101
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102 static int Lpbkdf2_sha1(lua_State *L) {
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103 unsigned char out[SHA_DIGEST_LENGTH];
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104
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105 size_t pass_len, salt_len;
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106 const char *pass = luaL_checklstring(L, 1, &pass_len);
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107 const unsigned char *salt = (unsigned char *)luaL_checklstring(L, 2, &salt_len);
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108 const int iter = luaL_checkinteger(L, 3);
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109
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110 if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, EVP_sha1(), SHA_DIGEST_LENGTH, out) == 0) {
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111 return luaL_error(L, "PKCS5_PBKDF2_HMAC() failed");
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112 }
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113
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114 lua_pushlstring(L, (char *)out, SHA_DIGEST_LENGTH);
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115
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116 return 1;
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117 }
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118
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119
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120 static int Lpbkdf2_sha256(lua_State *L) {
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121 unsigned char out[SHA256_DIGEST_LENGTH];
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122
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123 size_t pass_len, salt_len;
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124 const char *pass = luaL_checklstring(L, 1, &pass_len);
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125 const unsigned char *salt = (unsigned char *)luaL_checklstring(L, 2, &salt_len);
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126 const int iter = luaL_checkinteger(L, 3);
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127
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128 if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, EVP_sha256(), SHA256_DIGEST_LENGTH, out) == 0) {
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129 return luaL_error(L, "PKCS5_PBKDF2_HMAC() failed");
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130 }
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131
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132 lua_pushlstring(L, (char *)out, SHA256_DIGEST_LENGTH);
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133 return 1;
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134 }
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135
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136 static const luaL_Reg Reg[] = {
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137 { "sha1", Lsha1 },
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138 { "sha224", Lsha224 },
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139 { "sha256", Lsha256 },
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140 { "sha384", Lsha384 },
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141 { "sha512", Lsha512 },
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142 { "md5", Lmd5 },
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143 { "hmac_sha1", Lhmac_sha1 },
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144 { "hmac_sha256", Lhmac_sha256 },
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145 { "hmac_sha512", Lhmac_sha512 },
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146 { "hmac_md5", Lhmac_md5 },
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147 { "scram_Hi_sha1", Lpbkdf2_sha1 }, /* COMPAT */
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148 { "pbkdf2_hmac_sha1", Lpbkdf2_sha1 },
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149 { "pbkdf2_hmac_sha256", Lpbkdf2_sha256 },
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150 { NULL, NULL }
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151 };
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152
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153 LUALIB_API int luaopen_util_hashes(lua_State *L) {
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154 #if (LUA_VERSION_NUM > 501)
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155 luaL_checkversion(L);
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156 #endif
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157 lua_newtable(L);
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158 luaL_setfuncs(L, Reg, 0);
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159 lua_pushliteral(L, "-3.14");
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160 lua_setfield(L, -2, "version");
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161 return 1;
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162 }