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tdlib-fork/td/mtproto/ProxySecret.cpp

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
//
// 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/mtproto/ProxySecret.h"
#include "td/utils/base64.h"
#include "td/utils/misc.h"
namespace td {
namespace mtproto {
Result<ProxySecret> ProxySecret::from_link(Slice encoded_secret, bool truncate_if_needed) {
auto r_decoded = hex_decode(encoded_secret);
if (r_decoded.is_error()) {
r_decoded = base64url_decode(encoded_secret);
}
if (r_decoded.is_error()) {
return Status::Error(400, "Wrong proxy secret");
}
return from_binary(r_decoded.ok(), truncate_if_needed);
}
Result<ProxySecret> ProxySecret::from_binary(Slice raw_unchecked_secret, bool truncate_if_needed) {
if (raw_unchecked_secret.size() > 17 + MAX_DOMAIN_LENGTH) {
if (truncate_if_needed) {
raw_unchecked_secret.truncate(17 + MAX_DOMAIN_LENGTH);
} else {
return Status::Error(400, "Too long secret");
}
}
if (raw_unchecked_secret.size() == 16 ||
(raw_unchecked_secret.size() == 17 && static_cast<unsigned char>(raw_unchecked_secret[0]) == 0xdd) ||
(raw_unchecked_secret.size() >= 18 && static_cast<unsigned char>(raw_unchecked_secret[0]) == 0xee)) {
return from_raw(raw_unchecked_secret);
}
if (raw_unchecked_secret.size() < 16) {
return Status::Error(400, "Wrong proxy secret");
}
return Status::Error(400, "Unsupported proxy secret");
}
string ProxySecret::get_encoded_secret() const {
if (emulate_tls()) {
return base64url_encode(secret_);
}
return hex_encode(secret_);
}
} // namespace mtproto
} // namespace td