50 lines
1.5 KiB
C++
50 lines
1.5 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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#include "td/mtproto/ProxySecret.h"
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#include "td/utils/base64.h"
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#include "td/utils/misc.h"
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namespace td {
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namespace mtproto {
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Result<ProxySecret> ProxySecret::from_link(Slice encoded_secret) {
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auto r_decoded = hex_decode(encoded_secret);
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if (r_decoded.is_error()) {
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r_decoded = base64url_decode(encoded_secret);
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}
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if (r_decoded.is_error()) {
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return Status::Error(400, "Wrong proxy secret");
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}
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return from_binary(r_decoded.ok());
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}
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Result<ProxySecret> ProxySecret::from_binary(Slice raw_unchecked_secret) {
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if (raw_unchecked_secret.size() > 17 + 255) {
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return Status::Error(400, "Too long secret");
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}
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if (raw_unchecked_secret.size() == 16 ||
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(raw_unchecked_secret.size() == 17 && static_cast<unsigned char>(raw_unchecked_secret[0]) == 0xdd) ||
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(raw_unchecked_secret.size() >= 18 && static_cast<unsigned char>(raw_unchecked_secret[0]) == 0xee)) {
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return from_raw(raw_unchecked_secret);
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}
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if (raw_unchecked_secret.size() < 16) {
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return Status::Error(400, "Wrong proxy secret");
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}
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return Status::Error(400, "Unsupported proxy secret");
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}
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string ProxySecret::get_encoded_secret() const {
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if (emulate_tls()) {
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return base64url_encode(secret_);
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}
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return hex_encode(secret_);
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}
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} // namespace mtproto
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} // namespace td
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