diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/libwebrtc/net/dcsctp/socket/state_cookie.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/net/dcsctp/socket/state_cookie.h')
-rw-r--r-- | third_party/libwebrtc/net/dcsctp/socket/state_cookie.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/socket/state_cookie.h b/third_party/libwebrtc/net/dcsctp/socket/state_cookie.h new file mode 100644 index 0000000000..a26dbf86f7 --- /dev/null +++ b/third_party/libwebrtc/net/dcsctp/socket/state_cookie.h @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ +#ifndef NET_DCSCTP_SOCKET_STATE_COOKIE_H_ +#define NET_DCSCTP_SOCKET_STATE_COOKIE_H_ + +#include <cstdint> +#include <vector> + +#include "absl/types/optional.h" +#include "api/array_view.h" +#include "net/dcsctp/common/internal_types.h" +#include "net/dcsctp/socket/capabilities.h" + +namespace dcsctp { + +// This is serialized as a state cookie and put in INIT_ACK. The client then +// responds with this in COOKIE_ECHO. +// +// NOTE: Expect that the client will modify it to try to exploit the library. +// Do not trust anything in it; no pointers or anything like that. +class StateCookie { + public: + static constexpr size_t kCookieSize = 36; + + StateCookie(VerificationTag initiate_tag, + TSN initial_tsn, + uint32_t a_rwnd, + TieTag tie_tag, + Capabilities capabilities) + : initiate_tag_(initiate_tag), + initial_tsn_(initial_tsn), + a_rwnd_(a_rwnd), + tie_tag_(tie_tag), + capabilities_(capabilities) {} + + // Returns a serialized version of this cookie. + std::vector<uint8_t> Serialize(); + + // Deserializes the cookie, and returns absl::nullopt if that failed. + static absl::optional<StateCookie> Deserialize( + rtc::ArrayView<const uint8_t> cookie); + + VerificationTag initiate_tag() const { return initiate_tag_; } + TSN initial_tsn() const { return initial_tsn_; } + uint32_t a_rwnd() const { return a_rwnd_; } + TieTag tie_tag() const { return tie_tag_; } + const Capabilities& capabilities() const { return capabilities_; } + + private: + const VerificationTag initiate_tag_; + const TSN initial_tsn_; + const uint32_t a_rwnd_; + const TieTag tie_tag_; + const Capabilities capabilities_; +}; +} // namespace dcsctp + +#endif // NET_DCSCTP_SOCKET_STATE_COOKIE_H_ |