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Diffstat (limited to 'src/mmo/md5more.cpp')
| -rw-r--r-- | src/mmo/md5more.cpp | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/src/mmo/md5more.cpp b/src/mmo/md5more.cpp deleted file mode 100644 index 4e5d2da..0000000 --- a/src/mmo/md5more.cpp +++ /dev/null @@ -1,159 +0,0 @@ -#include "md5more.hpp" -// md5more.cpp - Non-basic MD5 functions. -// -// Copyright © ????-2004 Athena Dev Teams -// Copyright © 2004-2011 The Mana World Development Team -// Copyright © 2011-2014 Ben Longbons <b.r.longbons@gmail.com> -// -// This file is part of The Mana World (Athena server) -// -// This program is free software: you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program. If not, see <http://www.gnu.org/licenses/>. - -#include <algorithm> - -#include "../compat/rawmem.hpp" - -#include "../generic/random.hpp" - -#include "../io/cxxstdio.hpp" -#include "../io/read.hpp" - -#include "../net/ip.hpp" - -#include "../mmo/mmo.hpp" - -#include "../poison.hpp" - - -namespace tmwa -{ -#define X block.data - -// TODO - refactor MD5 into a stream, and merge the implementations -// I once implemented an ostream that does it ... -MD5_state MD5_from_FILE(io::ReadFile& in) -{ - uint64_t total_len = 0; - - uint8_t buf[0x40]; - uint8_t block_len = 0; - - MD5_state state; - MD5_init(&state); - - MD5_block block; - - while (true) - { - size_t rv = in.get(sign_cast<char *>(buf + block_len), 0x40 - block_len); - if (!rv) - break; - total_len += 8 * rv; // in bits - block_len += rv; - if (block_len != 0x40) - continue; - for (int i = 0; i < 0x10; i++) - X[i] = buf[4 * i + 0] | buf[4 * i + 1] << 8 | buf[4 * i + 2] << 16 | buf[4 * i + 3] << 24; - MD5_do_block(&state, block); - block_len = 0; - } - // no more input, just pad and append the length - buf[block_len] = 0x80; - really_memset0(buf + block_len + 1, 0x40 - block_len - 1); - if (block_len < 0x38) - { - for (int i = 0; i < 8; i++) - buf[0x38 + i] = total_len >> i * 8; - } - for (int i = 0; i < 0x10; i++) - X[i] = buf[4 * i + 0] | buf[4 * i + 1] << 8 | buf[4 * i + 2] << 16 | buf[4 * i + 3] << 24; - MD5_do_block(&state, block); - if (0x38 <= block_len) - { - really_memset0(buf, 0x38); - for (int i = 0; i < 8; i++) - buf[0x38 + i] = total_len >> i * 8; - for (int i = 0; i < 0x10; i++) - X[i] = buf[4 * i + 0] | buf[4 * i + 1] << 8 | buf[4 * i + 2] << 16 | buf[4 * i + 3] << 24; - MD5_do_block(&state, block); - } - return state; -} - - -// Hash a password with a salt. -// Whoever wrote this FAILS programming -AccountCrypt MD5_saltcrypt(AccountPass key, SaltString salt) -{ - char cbuf[64] {}; - - // hash the key then the salt - // buf ends up as a 64-char NUL-terminated string - md5_string tbuf, tbuf2; - MD5_to_str(MD5_from_string(key), tbuf); - MD5_to_str(MD5_from_string(salt), tbuf2); - const auto it = std::copy(tbuf.begin(), tbuf.end(), std::begin(cbuf)); - auto it2 = std::copy(tbuf2.begin(), tbuf2.end(), it); - assert(it2 == std::end(cbuf)); - - md5_string tbuf3; - MD5_to_str(MD5_from_string(XString(std::begin(cbuf), it2, nullptr)), tbuf3); - - VString<31> obuf; - - // This truncates the string, but we have to keep it like that for compatibility - SNPRINTF(obuf, 32, "!%s$%s"_fmt, salt, tbuf3); - return stringish<AccountCrypt>(obuf); -} - -SaltString make_salt(void) -{ - char salt[5]; - for (int i = 0; i < 5; i++) - // 126 would probably actually be okay - salt[i] = random_::in(48, 125); - return stringish<SaltString>(XString(salt + 0, salt + 5, nullptr)); -} - -bool pass_ok(AccountPass password, AccountCrypt crypted) -{ - // crypted is like !salt$hash - auto begin = crypted.begin() + 1; - auto end = std::find(begin, crypted.end(), '$'); - SaltString salt = stringish<SaltString>(crypted.xislice(begin, end)); - - return crypted == MD5_saltcrypt(password, salt); -} - -// [M|h]ashes up an IP address and a secret key -// to return a hopefully unique masked IP. -IP4Address MD5_ip(IP4Address ip) -{ - static SaltString secret = make_salt(); - - // MD5sum a secret + the IP address - VString<31> ipbuf; - SNPRINTF(ipbuf, 32, "%s %s"_fmt, ip, secret); - md5_binary obuf; - MD5_to_bin(MD5_from_string(ipbuf), obuf); - - // Fold the md5sum to 32 bits, pack the bytes to an in_addr - return IP4Address({ - static_cast<uint8_t>(obuf[0] ^ obuf[1] ^ obuf[8] ^ obuf[9]), - static_cast<uint8_t>(obuf[2] ^ obuf[3] ^ obuf[10] ^ obuf[11]), - static_cast<uint8_t>(obuf[4] ^ obuf[5] ^ obuf[12] ^ obuf[13]), - static_cast<uint8_t>(obuf[6] ^ obuf[7] ^ obuf[14] ^ obuf[15]), - }); -} -} // namespace tmwa |