mirror of
https://github.com/YGGverse/aquatic.git
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aquatic_ws: rewrite failing serialization, add tests
Use different approach to action fields and info_hash vec, fixing failing tests
This commit is contained in:
Joakim Frostegård
parent
c8512e1cdf
commit
0637f83daa
5 changed files with 311 additions and 250 deletions
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@ -1,11 +1,64 @@
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use anyhow::Context;
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use hashbrown::HashMap;
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use serde::{Serialize, Deserialize};
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use serde::{Serialize, Deserialize, Serializer, Deserializer};
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mod serde_helpers;
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use serde_helpers::*;
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub struct AnnounceAction;
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impl Serialize for AnnounceAction {
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fn serialize<S>(
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&self,
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serializer: S
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) -> Result<S::Ok, S::Error>
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where S: Serializer
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{
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serializer.serialize_str("announce")
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}
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}
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impl<'de> Deserialize<'de> for AnnounceAction {
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fn deserialize<D>(deserializer: D) -> Result<AnnounceAction, D::Error>
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where
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D: Deserializer<'de>,
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{
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deserializer.deserialize_str(AnnounceActionVisitor)
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}
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}
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub struct ScrapeAction;
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impl Serialize for ScrapeAction {
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fn serialize<S>(
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&self,
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serializer: S
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) -> Result<S::Ok, S::Error>
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where S: Serializer
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{
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serializer.serialize_str("scrape")
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}
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}
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impl<'de> Deserialize<'de> for ScrapeAction {
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fn deserialize<D>(deserializer: D) -> Result<ScrapeAction, D::Error>
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where
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D: Deserializer<'de>,
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{
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deserializer.deserialize_str(ScrapeActionVisitor)
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}
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}
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#[derive(Debug, Clone, Copy, Hash, PartialEq, Eq, Serialize, Deserialize)]
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#[serde(transparent)]
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pub struct PeerId(
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@ -67,6 +120,7 @@ impl Default for AnnounceEvent {
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/// action = "announce"
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#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
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pub struct MiddlemanOfferToPeer {
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pub action: AnnounceAction,
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/// Peer id of peer sending offer
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/// Note: if equal to client peer_id, client ignores offer
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pub peer_id: PeerId,
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@ -83,6 +137,7 @@ pub struct MiddlemanOfferToPeer {
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/// Action field should be 'announce'
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#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
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pub struct MiddlemanAnswerToPeer {
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pub action: AnnounceAction,
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/// Note: if equal to client peer_id, client ignores answer
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pub peer_id: PeerId,
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pub info_hash: InfoHash,
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@ -101,6 +156,7 @@ pub struct AnnounceRequestOffer {
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#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
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pub struct AnnounceRequest {
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pub action: AnnounceAction,
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pub info_hash: InfoHash,
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pub peer_id: PeerId,
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/// Just called "left" in protocol. Is set to None in some cases, such as
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@ -136,6 +192,7 @@ pub struct AnnounceRequest {
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#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
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pub struct AnnounceResponse {
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pub action: AnnounceAction,
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pub info_hash: InfoHash,
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/// Client checks if this is null, not clear why
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pub complete: usize,
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@ -145,17 +202,32 @@ pub struct AnnounceResponse {
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}
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#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
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#[serde(untagged)]
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pub enum ScrapeRequestInfoHashes {
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Single(InfoHash),
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Multiple(Vec<InfoHash>),
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}
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impl ScrapeRequestInfoHashes {
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pub fn as_vec(self) -> Vec<InfoHash> {
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match self {
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Self::Single(info_hash) => vec![info_hash],
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Self::Multiple(info_hashes) => info_hashes,
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}
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}
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}
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#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
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pub struct ScrapeRequest {
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pub action: ScrapeAction,
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// If omitted, scrape for all torrents, apparently
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// There is some kind of parsing here too which accepts a single info hash
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// and puts it into a vector
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#[serde(
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rename = "info_hash",
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deserialize_with = "deserialize_info_hashes",
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default
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)]
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pub info_hashes: Vec<InfoHash>,
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#[serde(rename = "info_hash")]
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pub info_hashes: Option<ScrapeRequestInfoHashes>,
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}
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@ -169,48 +241,15 @@ pub struct ScrapeStatistics {
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#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
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pub struct ScrapeResponse {
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pub action: ScrapeAction,
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pub files: HashMap<InfoHash, ScrapeStatistics>,
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// Looks like `flags` field is ignored in reference client
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// pub flags: HashMap<String, usize>,
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}
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#[derive(Debug, Clone, Serialize, Deserialize)]
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#[serde(rename_all = "lowercase")]
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pub enum Action {
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Announce,
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Scrape
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}
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/// Helper for serializing and deserializing messages
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#[derive(Debug, Clone, Serialize, Deserialize)]
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struct ActionWrapper<T> {
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pub action: Action,
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#[serde(flatten)]
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pub inner: T,
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}
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impl <T>ActionWrapper<T> {
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#[inline]
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pub fn announce(t: T) -> Self {
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Self {
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action: Action::Announce,
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inner: t
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}
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}
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#[inline]
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pub fn scrape(t: T) -> Self {
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Self {
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action: Action::Scrape,
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inner: t
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}
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}
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}
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#[derive(Debug, Clone, PartialEq, Eq)]
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#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
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#[serde(untagged)]
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pub enum InMessage {
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AnnounceRequest(AnnounceRequest),
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ScrapeRequest(ScrapeRequest),
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@ -218,49 +257,26 @@ pub enum InMessage {
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impl InMessage {
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/// Try parsing as announce request first. If that fails, try parsing as
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/// scrape request, or return None
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#[inline]
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pub fn from_ws_message(ws_message: tungstenite::Message) -> Option<Self> {
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pub fn from_ws_message(ws_message: tungstenite::Message) -> ::anyhow::Result<Self> {
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use tungstenite::Message::{Text, Binary};
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let text = match ws_message {
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Text(text) => Some(text),
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Binary(bytes) => String::from_utf8(bytes).ok(),
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_ => None
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}?;
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Text(text) => text,
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Binary(bytes) => String::from_utf8(bytes)?,
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_ => return Err(anyhow::anyhow!("Message is neither text nor bytes")),
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};
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let res: Result<ActionWrapper<AnnounceRequest>, _> = serde_json::from_str(&text);
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if let Ok(ActionWrapper { action: Action::Announce, inner }) = res {
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return Some(InMessage::AnnounceRequest(inner));
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}
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let res: Result<ActionWrapper<ScrapeRequest>, _> = serde_json::from_str(&text);
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if let Ok(ActionWrapper { action: Action::Scrape, inner }) = res {
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return Some(InMessage::ScrapeRequest(inner));
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}
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None
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::serde_json::from_str(&text).context("serialize with serde")
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}
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pub fn to_ws_message(&self) -> ::tungstenite::Message {
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let text = match self {
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InMessage::AnnounceRequest(r) => {
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serde_json::to_string(&ActionWrapper::announce(r)).unwrap()
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},
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InMessage::ScrapeRequest(r) => {
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serde_json::to_string(&ActionWrapper::scrape(r)).unwrap()
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},
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};
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::tungstenite::Message::from(text)
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::tungstenite::Message::from(::serde_json::to_string(&self).unwrap())
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}
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}
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#[derive(Debug, Clone, PartialEq, Eq, Deserialize)]
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#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
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#[serde(untagged)]
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pub enum OutMessage {
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AnnounceResponse(AnnounceResponse),
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@ -273,30 +289,7 @@ pub enum OutMessage {
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impl OutMessage {
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#[inline]
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pub fn into_ws_message(self) -> tungstenite::Message {
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let json = match self {
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Self::AnnounceResponse(message) => {
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serde_json::to_string(
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&ActionWrapper::announce(message)
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).unwrap()
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},
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Self::Offer(message) => {
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serde_json::to_string(
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&ActionWrapper::announce(message)
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).unwrap()
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},
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Self::Answer(message) => {
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serde_json::to_string(
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&ActionWrapper::announce(message)
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).unwrap()
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},
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Self::ScrapeResponse(message) => {
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serde_json::to_string(
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&ActionWrapper::scrape(message)
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).unwrap()
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},
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};
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tungstenite::Message::from(json)
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::tungstenite::Message::from(::serde_json::to_string(&self).unwrap())
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}
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#[inline]
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@ -308,7 +301,7 @@ impl OutMessage {
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let text = match message {
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Text(text) => text,
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Binary(bytes) => String::from_utf8(bytes)?,
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_ => return Err(anyhow::anyhow!("message type not supported")),
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_ => return Err(anyhow::anyhow!("Message is neither text nor bytes")),
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};
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if text.contains("answer"){
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@ -381,6 +374,7 @@ mod tests {
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impl Arbitrary for MiddlemanOfferToPeer {
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fn arbitrary<G: quickcheck::Gen>(g: &mut G) -> Self {
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Self {
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action: AnnounceAction,
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peer_id: Arbitrary::arbitrary(g),
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info_hash: Arbitrary::arbitrary(g),
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offer_id: Arbitrary::arbitrary(g),
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@ -392,6 +386,7 @@ mod tests {
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impl Arbitrary for MiddlemanAnswerToPeer {
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fn arbitrary<G: quickcheck::Gen>(g: &mut G) -> Self {
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Self {
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action: AnnounceAction,
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peer_id: Arbitrary::arbitrary(g),
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info_hash: Arbitrary::arbitrary(g),
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offer_id: Arbitrary::arbitrary(g),
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@ -434,6 +429,7 @@ mod tests {
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.map(|offers| offers.len());
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Self {
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action: AnnounceAction,
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info_hash: Arbitrary::arbitrary(g),
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peer_id: Arbitrary::arbitrary(g),
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bytes_left: Arbitrary::arbitrary(g),
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@ -450,6 +446,7 @@ mod tests {
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impl Arbitrary for AnnounceResponse {
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fn arbitrary<G: quickcheck::Gen>(g: &mut G) -> Self {
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Self {
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action: AnnounceAction,
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info_hash: Arbitrary::arbitrary(g),
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complete: Arbitrary::arbitrary(g),
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incomplete: Arbitrary::arbitrary(g),
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@ -461,11 +458,23 @@ mod tests {
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impl Arbitrary for ScrapeRequest {
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fn arbitrary<G: quickcheck::Gen>(g: &mut G) -> Self {
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Self {
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action: ScrapeAction,
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info_hashes: Arbitrary::arbitrary(g),
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}
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}
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}
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impl Arbitrary for ScrapeRequestInfoHashes {
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fn arbitrary<G: quickcheck::Gen>(g: &mut G) -> Self {
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if Arbitrary::arbitrary(g) {
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ScrapeRequestInfoHashes::Multiple(Arbitrary::arbitrary(g))
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} else {
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ScrapeRequestInfoHashes::Single(Arbitrary::arbitrary(g))
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}
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}
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}
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impl Arbitrary for ScrapeStatistics {
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fn arbitrary<G: quickcheck::Gen>(g: &mut G) -> Self {
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Self {
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@ -481,6 +490,7 @@ mod tests {
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let files: Vec<(InfoHash, ScrapeStatistics)> = Arbitrary::arbitrary(g);
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Self {
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action: ScrapeAction,
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files: files.into_iter().collect(),
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}
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}
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@ -508,28 +518,144 @@ mod tests {
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}
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#[quickcheck]
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fn test_serialize_deserialize_in_message(in_message_1: InMessage){
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dbg!(in_message_1.clone());
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fn quickcheck_serde_identity_in_message(in_message_1: InMessage) -> bool {
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let ws_message = in_message_1.to_ws_message();
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dbg!(ws_message.clone());
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let in_message_2 = InMessage::from_ws_message(ws_message).unwrap();
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dbg!(in_message_2.clone());
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let in_message_2 = InMessage::from_ws_message(ws_message.clone()).unwrap();
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assert_eq!(in_message_1, in_message_2);
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let success = in_message_1 == in_message_2;
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if !success {
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dbg!(in_message_1);
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dbg!(in_message_2);
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if let ::tungstenite::Message::Text(text) = ws_message {
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println!("{}", text);
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}
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}
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success
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}
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#[quickcheck]
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fn test_serialize_deserialize_out_message(out_message_1: OutMessage){
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dbg!(out_message_1.clone());
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fn quickcheck_serde_identity_out_message(out_message_1: OutMessage) -> bool {
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let ws_message = out_message_1.clone().into_ws_message();
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dbg!(ws_message.clone());
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let out_message_2 = OutMessage::from_ws_message(ws_message).unwrap();
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dbg!(out_message_2.clone());
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let out_message_2 = OutMessage::from_ws_message(ws_message.clone()).unwrap();
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assert_eq!(out_message_1, out_message_2);
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let success = out_message_1 == out_message_2;
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if !success {
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dbg!(out_message_1);
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dbg!(out_message_2);
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if let ::tungstenite::Message::Text(text) = ws_message {
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println!("{}", text);
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}
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}
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success
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}
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fn info_hash_from_bytes(bytes: &[u8]) -> InfoHash {
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let mut arr = [0u8; 20];
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assert!(bytes.len() == 20);
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arr.copy_from_slice(&bytes[..]);
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InfoHash(arr)
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}
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#[test]
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fn test_deserialize_info_hashes_vec(){
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let input = r#"{
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"action": "scrape",
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"info_hash": ["aaaabbbbccccddddeeee", "aaaabbbbccccddddeeee"]
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}"#;
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let info_hashes = ScrapeRequestInfoHashes::Multiple(
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vec![
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info_hash_from_bytes(b"aaaabbbbccccddddeeee"),
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info_hash_from_bytes(b"aaaabbbbccccddddeeee"),
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]
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);
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let expected = ScrapeRequest {
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action: ScrapeAction,
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info_hashes: Some(info_hashes)
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};
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let observed: ScrapeRequest = serde_json::from_str(input).unwrap();
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assert_eq!(expected, observed);
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}
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#[test]
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fn test_deserialize_info_hashes_str(){
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let input = r#"{
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"action": "scrape",
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"info_hash": "aaaabbbbccccddddeeee"
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}"#;
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let info_hashes = ScrapeRequestInfoHashes::Single(
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info_hash_from_bytes(b"aaaabbbbccccddddeeee")
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);
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let expected = ScrapeRequest {
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action: ScrapeAction,
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info_hashes: Some(info_hashes)
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};
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let observed: ScrapeRequest = serde_json::from_str(input).unwrap();
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assert_eq!(expected, observed);
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}
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#[test]
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fn test_deserialize_info_hashes_null(){
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let input = r#"{
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"action": "scrape",
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"info_hash": null
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}"#;
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let expected = ScrapeRequest {
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action: ScrapeAction,
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info_hashes: None
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};
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let observed: ScrapeRequest = serde_json::from_str(input).unwrap();
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assert_eq!(expected, observed);
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}
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#[test]
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fn test_deserialize_info_hashes_missing(){
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let input = r#"{
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"action": "scrape"
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}"#;
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let expected = ScrapeRequest {
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action: ScrapeAction,
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info_hashes: None
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};
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let observed: ScrapeRequest = serde_json::from_str(input).unwrap();
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assert_eq!(expected, observed);
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}
|
||||
|
||||
#[quickcheck]
|
||||
fn quickcheck_serde_identity_info_hashes(info_hashes: ScrapeRequestInfoHashes) -> bool {
|
||||
let json = ::serde_json::to_string(&info_hashes).unwrap();
|
||||
|
||||
println!("{}", json);
|
||||
|
||||
let deserialized: ScrapeRequestInfoHashes = ::serde_json::from_str(&json).unwrap();
|
||||
|
||||
let success = info_hashes == deserialized;
|
||||
|
||||
if !success {
|
||||
}
|
||||
|
||||
success
|
||||
}
|
||||
}
|
||||
|
|
@ -1,13 +1,55 @@
|
|||
use serde::{Serializer, Deserializer, de::{Visitor, SeqAccess}};
|
||||
use serde::{Serializer, Deserializer, de::Visitor};
|
||||
|
||||
use super::InfoHash;
|
||||
use super::{AnnounceAction, ScrapeAction};
|
||||
|
||||
|
||||
pub struct AnnounceActionVisitor;
|
||||
|
||||
|
||||
impl<'de> Visitor<'de> for AnnounceActionVisitor {
|
||||
type Value = AnnounceAction;
|
||||
|
||||
fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
|
||||
formatter.write_str("string with value 'announce'")
|
||||
}
|
||||
|
||||
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
|
||||
where E: ::serde::de::Error, {
|
||||
if v == "announce" {
|
||||
Ok(AnnounceAction)
|
||||
} else {
|
||||
Err(E::custom("value is not 'announce'"))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
pub struct ScrapeActionVisitor;
|
||||
|
||||
|
||||
impl<'de> Visitor<'de> for ScrapeActionVisitor {
|
||||
type Value = ScrapeAction;
|
||||
|
||||
fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
|
||||
formatter.write_str("string with value 'scrape'")
|
||||
}
|
||||
|
||||
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
|
||||
where E: ::serde::de::Error, {
|
||||
if v == "scrape" {
|
||||
Ok(ScrapeAction)
|
||||
} else {
|
||||
Err(E::custom("value is not 'scrape'"))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
pub fn serialize_20_bytes<S>(
|
||||
data: &[u8; 20],
|
||||
serializer: S
|
||||
) -> Result<S::Ok, S::Error> where S: Serializer {
|
||||
let text: String = data.iter().map(|byte| *byte as char).collect();
|
||||
let text: String = data.iter().map(|byte| char::from(*byte)).collect();
|
||||
|
||||
serializer.serialize_str(&text)
|
||||
}
|
||||
|
|
@ -71,69 +113,11 @@ pub fn deserialize_20_bytes<'de, D>(
|
|||
}
|
||||
|
||||
|
||||
pub struct InfoHashVecVisitor;
|
||||
|
||||
|
||||
impl<'de> Visitor<'de> for InfoHashVecVisitor {
|
||||
type Value = Vec<InfoHash>;
|
||||
|
||||
fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
|
||||
formatter.write_str("string or array of strings consisting of 20 bytes")
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
|
||||
where E: ::serde::de::Error,
|
||||
{
|
||||
match TwentyByteVisitor::visit_str::<E>(TwentyByteVisitor, value){
|
||||
Ok(arr) => Ok(vec![InfoHash(arr)]),
|
||||
Err(err) => Err(E::custom(format!("got string, but {}", err)))
|
||||
}
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
|
||||
where A: SeqAccess<'de>
|
||||
{
|
||||
let mut info_hashes: Self::Value = Vec::new();
|
||||
|
||||
while let Ok(Some(value)) = seq.next_element::<&str>(){
|
||||
let arr = TwentyByteVisitor::visit_str(
|
||||
TwentyByteVisitor, value
|
||||
)?;
|
||||
|
||||
info_hashes.push(InfoHash(arr));
|
||||
}
|
||||
|
||||
Ok(info_hashes)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn visit_none<E>(self) -> Result<Self::Value, E>
|
||||
where E: ::serde::de::Error
|
||||
{
|
||||
Ok(vec![])
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/// Empty vector is returned if value is null or any invalid info hash
|
||||
/// is present
|
||||
#[inline]
|
||||
pub fn deserialize_info_hashes<'de, D>(
|
||||
deserializer: D
|
||||
) -> Result<Vec<InfoHash>, D::Error>
|
||||
where D: Deserializer<'de>,
|
||||
{
|
||||
Ok(deserializer.deserialize_any(InfoHashVecVisitor).unwrap_or_default())
|
||||
}
|
||||
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use serde::Deserialize;
|
||||
use quickcheck_macros::quickcheck;
|
||||
|
||||
use super::*;
|
||||
use crate::InfoHash;
|
||||
|
||||
fn info_hash_from_bytes(bytes: &[u8]) -> InfoHash {
|
||||
let mut arr = [0u8; 20];
|
||||
|
|
@ -175,73 +159,12 @@ mod tests {
|
|||
assert_eq!(info_hash, info_hash_2);
|
||||
}
|
||||
|
||||
#[derive(Debug, PartialEq, Eq, Deserialize)]
|
||||
struct Test {
|
||||
#[serde(deserialize_with = "deserialize_info_hashes", default)]
|
||||
info_hashes: Vec<InfoHash>,
|
||||
#[quickcheck]
|
||||
fn quickcheck_serde_20_bytes(info_hash: InfoHash) -> bool {
|
||||
let out = serde_json::to_string(&info_hash).unwrap();
|
||||
let info_hash_2 = serde_json::from_str(&out).unwrap();
|
||||
|
||||
info_hash == info_hash_2
|
||||
}
|
||||
|
||||
|
||||
#[test]
|
||||
fn test_deserialize_info_hashes_vec(){
|
||||
let input = r#"{
|
||||
"info_hashes": ["aaaabbbbccccddddeeee", "aaaabbbbccccddddeeee"]
|
||||
}"#;
|
||||
|
||||
let expected = Test {
|
||||
info_hashes: vec![
|
||||
info_hash_from_bytes(b"aaaabbbbccccddddeeee"),
|
||||
info_hash_from_bytes(b"aaaabbbbccccddddeeee"),
|
||||
]
|
||||
};
|
||||
|
||||
let observed: Test = serde_json::from_str(input).unwrap();
|
||||
|
||||
assert_eq!(observed, expected);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_deserialize_info_hashes_str(){
|
||||
let input = r#"{
|
||||
"info_hashes": "aaaabbbbccccddddeeee"
|
||||
}"#;
|
||||
|
||||
let expected = Test {
|
||||
info_hashes: vec![
|
||||
info_hash_from_bytes(b"aaaabbbbccccddddeeee"),
|
||||
]
|
||||
};
|
||||
|
||||
let observed: Test = serde_json::from_str(input).unwrap();
|
||||
|
||||
assert_eq!(observed, expected);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_deserialize_info_hashes_null(){
|
||||
let input = r#"{
|
||||
"info_hashes": null
|
||||
}"#;
|
||||
|
||||
let expected = Test {
|
||||
info_hashes: vec![]
|
||||
};
|
||||
|
||||
let observed: Test = serde_json::from_str(input).unwrap();
|
||||
|
||||
assert_eq!(observed, expected);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_deserialize_info_hashes_missing(){
|
||||
let input = r#"{}"#;
|
||||
|
||||
let expected = Test {
|
||||
info_hashes: vec![]
|
||||
};
|
||||
|
||||
let observed: Test = serde_json::from_str(input).unwrap();
|
||||
|
||||
assert_eq!(observed, expected);
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue