mirror of
https://github.com/fluencelabs/rust-libp2p
synced 2025-05-14 20:01:21 +00:00
d8ad7bddf5
This adds optional message signing and verification to the gossipsub protocol as per the libp2p specifications. In addition this commit: - Removes the LruCache received cache and simply uses the memcache in it's place. - Send subscriptions to all peers - Prevent invalid messages from being gossiped - Send grafts when subscriptions are added to the mesh Co-authored-by: Max Inden <mail@max-inden.de> Co-authored-by: Rüdiger Klaehn <rklaehn@protonmail.com> Co-authored-by: Rüdiger Klaehn <rklaehn@gmail.com>
96 lines
2.8 KiB
Rust
96 lines
2.8 KiB
Rust
// Copyright 2020 Sigma Prime Pty Ltd.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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use crate::rpc_proto;
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use base64::encode;
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use prost::Message;
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use sha2::{Digest, Sha256};
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use std::fmt;
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#[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord)]
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pub struct TopicHash {
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/// The topic hash. Stored as a string to align with the protobuf API.
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hash: String,
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}
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impl TopicHash {
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pub fn from_raw(hash: impl Into<String>) -> TopicHash {
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TopicHash { hash: hash.into() }
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}
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pub fn as_str(&self) -> &str {
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&self.hash
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}
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}
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/// A gossipsub topic.
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#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
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pub struct Topic {
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topic: String,
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}
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impl Topic {
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pub fn new(topic: String) -> Self {
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Topic { topic }
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}
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/// Creates a `TopicHash` by SHA256 hashing the topic then base64 encoding the
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/// hash.
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pub fn sha256_hash(&self) -> TopicHash {
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let topic_descripter = rpc_proto::TopicDescriptor {
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name: Some(self.topic.clone()),
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auth: None,
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enc: None,
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};
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let mut bytes = Vec::with_capacity(topic_descripter.encoded_len());
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topic_descripter
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.encode(&mut bytes)
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.expect("buffer is large enough");
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let hash = encode(Sha256::digest(&bytes).as_slice());
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TopicHash { hash }
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}
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/// Creates a `TopicHash` as a raw string.
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pub fn no_hash(&self) -> TopicHash {
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TopicHash {
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hash: self.topic.clone(),
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}
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}
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}
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impl Into<String> for TopicHash {
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fn into(self) -> String {
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self.hash
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}
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}
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impl fmt::Display for Topic {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "{}", self.topic)
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}
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}
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impl fmt::Display for TopicHash {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "{}", self.hash)
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}
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}
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