tdlight/td/telegram/DhCache.cpp

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//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2024
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "td/telegram/DhCache.h"
#include "td/telegram/Global.h"
#include "td/telegram/TdDb.h"
#include "td/utils/common.h"
#include "td/utils/misc.h"
namespace td {
static string good_prime_key(Slice prime_str) {
string key("good_prime:");
key.append(prime_str.data(), prime_str.size());
return key;
}
int DhCache::is_good_prime(Slice prime_str) const {
static string built_in_good_prime =
hex_decode(
"c71caeb9c6b1c9048e6c522f70f13f73980d40238e3e21c14934d037563d930f48198a0aa7c14058229493d22530f4dbfa336f6e0ac9"
"25139543aed44cce7c3720fd51f69458705ac68cd4fe6b6b13abdc9746512969328454f18faf8c595f642477fe96bb2a941d5bcd1d4a"
"c8cc49880708fa9b378e3c4f3a9060bee67cf9a4a4a695811051907e162753b56b0f6b410dba74d8a84b2a14b3144e0ef1284754fd17"
"ed950d5965b4b9dd46582db1178d169c6bc465b0d6ff9ca3928fef5b9ae4e418fc15e83ebea0f87fa9ff5eed70050ded2849f47bf959"
"d956850ce929851f0d8115f635b105ee2e4e15d04b2454bf6f4fadf034b10403119cd8e3b92fcc5b")
.move_as_ok();
if (prime_str == built_in_good_prime) {
return 1;
}
string value = G()->td_db()->get_binlog_pmc()->get(good_prime_key(prime_str));
if (value == "good") {
return 1;
}
if (value == "bad") {
return 0;
}
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CHECK(value.empty());
return -1;
}
void DhCache::add_good_prime(Slice prime_str) const {
G()->td_db()->get_binlog_pmc()->set(good_prime_key(prime_str), "good");
}
void DhCache::add_bad_prime(Slice prime_str) const {
G()->td_db()->get_binlog_pmc()->set(good_prime_key(prime_str), "bad");
}
} // namespace td