Software /
code /
prosody
File
util-src/hashes.c @ 10360:64ddcbc9a328
core.stanza_router: Do strict jidprep on c2s
Be conservative in what you let your clients send, be liberal in what
you let in via s2s.
Being strict on s2s leads to interop problems and poor experiences, ie
users being ejected from MUCs if something invalid enters. By starting
with tightening up input into the network, we may be able to gradually
approach a point where no invalid JIDs are allowed.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Mon, 09 Sep 2019 22:32:01 +0200 |
parent | 9970:4a43feb9ab15 |
child | 10480:94cacf9fd0ae |
line wrap: on
line source
/* Prosody IM -- Copyright (C) 2009-2010 Matthew Wild -- Copyright (C) 2009-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- */ /* * hashes.c * Lua library for sha1, sha256 and md5 hashes */ #include <string.h> #include <stdlib.h> #ifdef _MSC_VER typedef unsigned __int32 uint32_t; #else #include <inttypes.h> #endif #include "lua.h" #include "lauxlib.h" #include <openssl/sha.h> #include <openssl/md5.h> #include <openssl/hmac.h> #include <openssl/evp.h> #if (LUA_VERSION_NUM == 501) #define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R) #endif #define HMAC_IPAD 0x36363636 #define HMAC_OPAD 0x5c5c5c5c const char *hex_tab = "0123456789abcdef"; void toHex(const unsigned char *in, int length, unsigned char *out) { int i; for(i = 0; i < length; i++) { out[i * 2] = hex_tab[(in[i] >> 4) & 0xF]; out[i * 2 + 1] = hex_tab[(in[i]) & 0xF]; } } #define MAKE_HASH_FUNCTION(myFunc, func, size) \ static int myFunc(lua_State *L) { \ size_t len; \ const char *s = luaL_checklstring(L, 1, &len); \ int hex_out = lua_toboolean(L, 2); \ unsigned char hash[size], result[size*2]; \ func((const unsigned char*)s, len, hash); \ if (hex_out) { \ toHex(hash, size, result); \ lua_pushlstring(L, (char*)result, size*2); \ } else { \ lua_pushlstring(L, (char*)hash, size);\ } \ return 1; \ } MAKE_HASH_FUNCTION(Lsha1, SHA1, SHA_DIGEST_LENGTH) MAKE_HASH_FUNCTION(Lsha224, SHA224, SHA224_DIGEST_LENGTH) MAKE_HASH_FUNCTION(Lsha256, SHA256, SHA256_DIGEST_LENGTH) MAKE_HASH_FUNCTION(Lsha384, SHA384, SHA384_DIGEST_LENGTH) MAKE_HASH_FUNCTION(Lsha512, SHA512, SHA512_DIGEST_LENGTH) MAKE_HASH_FUNCTION(Lmd5, MD5, MD5_DIGEST_LENGTH) struct hash_desc { int (*Init)(void *); int (*Update)(void *, const void *, size_t); int (*Final)(unsigned char *, void *); size_t digestLength; void *ctx, *ctxo; }; #define MAKE_HMAC_FUNCTION(myFunc, evp, size, type) \ static int myFunc(lua_State *L) { \ unsigned char hash[size], result[2*size]; \ size_t key_len, msg_len; \ unsigned int out_len; \ const char *key = luaL_checklstring(L, 1, &key_len); \ const char *msg = luaL_checklstring(L, 2, &msg_len); \ const int hex_out = lua_toboolean(L, 3); \ HMAC(evp(), key, key_len, (const unsigned char*)msg, msg_len, (unsigned char*)hash, &out_len); \ if (hex_out) { \ toHex(hash, out_len, result); \ lua_pushlstring(L, (char*)result, out_len*2); \ } else { \ lua_pushlstring(L, (char*)hash, out_len); \ } \ return 1; \ } MAKE_HMAC_FUNCTION(Lhmac_sha1, EVP_sha1, SHA_DIGEST_LENGTH, SHA_CTX) MAKE_HMAC_FUNCTION(Lhmac_sha256, EVP_sha256, SHA256_DIGEST_LENGTH, SHA256_CTX) MAKE_HMAC_FUNCTION(Lhmac_sha512, EVP_sha512, SHA512_DIGEST_LENGTH, SHA512_CTX) MAKE_HMAC_FUNCTION(Lhmac_md5, EVP_md5, MD5_DIGEST_LENGTH, MD5_CTX) static int Lpbkdf2_sha1(lua_State *L) { unsigned char out[SHA_DIGEST_LENGTH]; size_t pass_len, salt_len; const char *pass = luaL_checklstring(L, 1, &pass_len); const unsigned char *salt = (unsigned char *)luaL_checklstring(L, 2, &salt_len); const int iter = luaL_checkinteger(L, 3); if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, EVP_sha1(), SHA_DIGEST_LENGTH, out) == 0) { return luaL_error(L, "PKCS5_PBKDF2_HMAC() failed"); } lua_pushlstring(L, (char *)out, SHA_DIGEST_LENGTH); return 1; } static int Lpbkdf2_sha256(lua_State *L) { unsigned char out[SHA256_DIGEST_LENGTH]; size_t pass_len, salt_len; const char *pass = luaL_checklstring(L, 1, &pass_len); const unsigned char *salt = (unsigned char *)luaL_checklstring(L, 2, &salt_len); const int iter = luaL_checkinteger(L, 3); if(PKCS5_PBKDF2_HMAC(pass, pass_len, salt, salt_len, iter, EVP_sha256(), SHA256_DIGEST_LENGTH, out) == 0) { return luaL_error(L, "PKCS5_PBKDF2_HMAC() failed"); } lua_pushlstring(L, (char *)out, SHA_DIGEST_LENGTH); return 1; } static const luaL_Reg Reg[] = { { "sha1", Lsha1 }, { "sha224", Lsha224 }, { "sha256", Lsha256 }, { "sha384", Lsha384 }, { "sha512", Lsha512 }, { "md5", Lmd5 }, { "hmac_sha1", Lhmac_sha1 }, { "hmac_sha256", Lhmac_sha256 }, { "hmac_sha512", Lhmac_sha512 }, { "hmac_md5", Lhmac_md5 }, { "scram_Hi_sha1", Lpbkdf2_sha1 }, /* COMPAT */ { "pbkdf2_hmac_sha1", Lpbkdf2_sha1 }, { "pbkdf2_hmac_sha256", Lpbkdf2_sha256 }, { NULL, NULL } }; LUALIB_API int luaopen_util_hashes(lua_State *L) { #if (LUA_VERSION_NUM > 501) luaL_checkversion(L); #endif lua_newtable(L); luaL_setfuncs(L, Reg, 0); lua_pushliteral(L, "-3.14"); lua_setfield(L, -2, "version"); return 1; }