70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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#include "td/utils/common.h"
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#include "td/utils/Slice.h"
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#include "td/utils/Status.h"
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namespace td {
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namespace mtproto {
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class ProxySecret {
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public:
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static constexpr size_t MAX_DOMAIN_LENGTH = 182; // must be small enough to not overflow TLS-hello length
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static Result<ProxySecret> from_link(Slice encoded_secret, bool truncate_if_needed = false);
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static Result<ProxySecret> from_binary(Slice raw_unchecked_secret, bool truncate_if_needed = false);
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static ProxySecret from_raw(Slice raw_secret) {
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ProxySecret result;
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result.secret_ = raw_secret.str();
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return result;
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}
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Slice get_raw_secret() const {
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return secret_;
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}
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Slice get_proxy_secret() const {
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auto proxy_secret = Slice(secret_).truncate(17);
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if (proxy_secret.size() == 17) {
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proxy_secret.remove_prefix(1);
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}
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return proxy_secret;
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}
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string get_encoded_secret() const;
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bool use_random_padding() const {
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return secret_.size() >= 17;
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}
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bool emulate_tls() const {
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return secret_.size() >= 17 && static_cast<unsigned char>(secret_[0]) == 0xee;
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}
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string get_domain() const {
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CHECK(emulate_tls());
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return secret_.substr(17);
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}
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private:
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friend bool operator==(const ProxySecret &lhs, const ProxySecret &rhs) {
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return lhs.secret_ == rhs.secret_;
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}
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string secret_;
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};
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inline bool operator!=(const ProxySecret &lhs, const ProxySecret &rhs) {
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return !(lhs == rhs);
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}
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} // namespace mtproto
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} // namespace td
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