Command result notices

This introduces a new notice-like event with more structure so that clients
can know if an event is sucessfully written to the database. Clients
can't really do much with the current NOTICE messages, but with these
structured result messages, it can know if an event was sucessfully
saved.

Whenever there is an error and we have an id available (event id, sub
id, etc) we return these structured OK events instead.

Example:

When saving the following event:
    ["EVENT",{"id": "event_id" }]

The server will now return events in the following format:
    ["OK", event_id, "true|false", message]

For example, on a successful save:
    ["OK", "event_id", "true"]

If we already have the event:
    ["OK", "event_id", "true", "duplicate"]

If the event is rejected:
    ["OK", "event_id", "false", "you are blocked"]

If a subscription fails:
    ["OK", "sub_id", "false", "Too many subscriptions"]

NIP coming soon!

Cargo.lock

@@ -200,9 +200,9 @@ checksum = "ec8a7b6a70fde80372154c65702f00a0f56f3e1c36abbc6c440484be248856db"
 
 [[package]]
 name = "cc"
-version = "1.0.76"
+version = "1.0.74"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76a284da2e6fe2092f2353e51713435363112dfd60030e22add80be333fb928f"
+checksum = "581f5dba903aac52ea3feb5ec4810848460ee833876f1f9b0fdeab1f19091574"
 
 [[package]]
 name = "cfg-if"
@@ -212,9 +212,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chrono"
-version = "0.4.23"
+version = "0.4.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "16b0a3d9ed01224b22057780a37bb8c5dbfe1be8ba48678e7bf57ec4b385411f"
+checksum = "bfd4d1b31faaa3a89d7934dbded3111da0d2ef28e3ebccdb4f0179f5929d1ef1"
 dependencies = [
  "iana-time-zone",
  "num-integer",
@@ -381,9 +381,9 @@ dependencies = [
 
 [[package]]
 name = "cxx"
-version = "1.0.82"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d4a41a86530d0fe7f5d9ea779916b7cadd2d4f9add748b99c2c029cbbdfaf453"
+checksum = "6b7d4e43b25d3c994662706a1d4fcfc32aaa6afd287502c111b237093bb23f3a"
 dependencies = [
  "cc",
  "cxxbridge-flags",
@@ -393,9 +393,9 @@ dependencies = [
 
 [[package]]
 name = "cxx-build"
-version = "1.0.82"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06416d667ff3e3ad2df1cd8cd8afae5da26cf9cec4d0825040f88b5ca659a2f0"
+checksum = "84f8829ddc213e2c1368e51a2564c552b65a8cb6a28f31e576270ac81d5e5827"
 dependencies = [
  "cc",
  "codespan-reporting",
@@ -408,15 +408,15 @@ dependencies = [
 
 [[package]]
 name = "cxxbridge-flags"
-version = "1.0.82"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "820a9a2af1669deeef27cb271f476ffd196a2c4b6731336011e0ba63e2c7cf71"
+checksum = "e72537424b474af1460806647c41d4b6d35d09ef7fe031c5c2fa5766047cc56a"
 
 [[package]]
 name = "cxxbridge-macro"
-version = "1.0.82"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a08a6e2fcc370a089ad3b4aaf54db3b1b4cee38ddabce5896b33eb693275f470"
+checksum = "309e4fb93eed90e1e14bea0da16b209f81813ba9fc7830c20ed151dd7bc0a4d7"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -438,9 +438,9 @@ dependencies = [
 
 [[package]]
 name = "digest"
-version = "0.10.6"
+version = "0.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8168378f4e5023e7218c89c891c0fd8ecdb5e5e4f18cb78f38cf245dd021e76f"
+checksum = "adfbc57365a37acbd2ebf2b64d7e69bb766e2fea813521ed536f5d0520dcf86c"
 dependencies = [
  "block-buffer",
  "crypto-common",
@@ -789,9 +789,9 @@ checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
 [[package]]
 name = "hyper"
-version = "0.14.23"
+version = "0.14.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "034711faac9d2166cb1baf1a2fb0b60b1f277f8492fd72176c17f3515e1abd3c"
+checksum = "abfba89e19b959ca163c7752ba59d737c1ceea53a5d31a149c805446fc958064"
 dependencies = [
  "bytes",
  "futures-channel",
@@ -872,9 +872,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.9.2"
+version = "1.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1885e79c1fc4b10f0e172c475f458b7f7b93061064d98c3293e98c5ba0c8b399"
+checksum = "10a35a97730320ffe8e2d410b5d3b69279b98d2c14bdb8b70ea89ecf7888d41e"
 dependencies = [
  "autocfg 1.1.0",
  "hashbrown 0.12.3",
@@ -1095,7 +1095,7 @@ checksum = "38bf9645c8b145698bb0b18a4637dcacbc421ea49bef2317e4fd8065a387cf21"
 
 [[package]]
 name = "nostr-rs-relay"
-version = "0.7.2"
+version = "0.7.1"
 dependencies = [
  "anyhow",
  "bitcoin_hashes",
@@ -1664,9 +1664,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.7.0"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e076559ef8e241f2ae3479e36f97bd5741c0330689e217ad51ce2c76808b868a"
+checksum = "4c4eb3267174b8c6c2f654116623910a0fef09c4753f8dd83db29c48a0df988b"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1684,9 +1684,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.28"
+version = "0.6.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "456c603be3e8d448b072f410900c09faf164fbce2d480456f50eea6e25f9c848"
+checksum = "a3f87b73ce11b1619a3c6332f45341e0047173771e8b8b73f87bfeefb7b56244"
 
 [[package]]
 name = "remove_dir_all"
@@ -1836,9 +1836,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.88"
+version = "1.0.87"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e8b3801309262e8184d9687fb697586833e939767aea0dda89f5a8e650e8bd7"
+checksum = "6ce777b7b150d76b9cf60d28b55f5847135a003f7d7350c6be7a773508ce7d45"
 dependencies = [
  "indexmap",
  "itoa",
@@ -1997,9 +1997,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.22.0"
+version = "1.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d76ce4a75fb488c605c54bf610f221cea8b0dafb53333c1a67e8ee199dcd2ae3"
+checksum = "a9e03c497dc955702ba729190dc4aac6f2a0ce97f913e5b1b5912fc5039d9099"
 dependencies = [
  "autocfg 1.1.0",
  "bytes",
@@ -2367,9 +2367,9 @@ checksum = "09cc8ee72d2a9becf2f2febe0205bbed8fc6615b7cb429ad062dc7b7ddd036a9"
 
 [[package]]
 name = "uuid"
-version = "1.2.2"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "422ee0de9031b5b948b97a8fc04e3aa35230001a722ddd27943e0be31564ce4c"
+checksum = "feb41e78f93363bb2df8b0e86a2ca30eed7806ea16ea0c790d757cf93f79be83"
 dependencies = [
  "getrandom",
 ]

Cargo.toml

@@ -1,15 +1,7 @@
 [package]
 name = "nostr-rs-relay"
-version = "0.7.2"
+version = "0.7.1"
 edition = "2021"
-authors = ["Greg Heartsfield <scsibug@imap.cc>"]
-description = "A relay implementation for the Nostr protocol"
-readme = "README.md"
-homepage = "https://sr.ht/~gheartsfield/nostr-rs-relay/"
-repository = "https://git.sr.ht/~gheartsfield/nostr-rs-relay"
-license = "MIT"
-keywords = ["nostr", "server"]
-categories = ["network-programming", "web-programming"]
 
 [dependencies]
 tracing = "0.1.36"

Dockerfile

@@ -1,21 +1,16 @@
 FROM docker.io/library/rust:1.65.0@sha256:1bca14676a365d0ed37a1e2a1da86c2bcf883fdf6e6886469434763d94d4afd5 as builder
 
-RUN USER=root cargo install cargo-auditable
 RUN USER=root cargo new --bin nostr-rs-relay
 WORKDIR ./nostr-rs-relay
 COPY ./Cargo.toml ./Cargo.toml
 COPY ./Cargo.lock ./Cargo.lock
-# build dependencies only (caching)
+RUN cargo build --release
-RUN cargo auditable build --release --locked
-# get rid of starter project code
 RUN rm src/*.rs
 
-# copy project source code
 COPY ./src ./src
 
-# build auditable release using locked deps
 RUN rm ./target/release/deps/nostr*relay*
-RUN cargo auditable build --release --locked
+RUN cargo build --release
 
 FROM docker.io/library/debian:bullseye-20221024-slim@sha256:76cdda8fe5eb597ef5e712e4c9a9f5f1fb119e69f353daaa7bd6d0f6e66e541d
 

README.md

@@ -26,7 +26,6 @@ mirrored on [GitHub](https://github.com/scsibug/nostr-rs-relay).
 - [x] NIP-12: [Generic Tag Queries](https://github.com/nostr-protocol/nips/blob/master/12.md)
 - [x] NIP-15: [End of Stored Events Notice](https://github.com/nostr-protocol/nips/blob/master/15.md)
 - [x] NIP-16: [Event Treatment](https://github.com/nostr-protocol/nips/blob/master/16.md)
-- [x] NIP-20: [Command Results](https://github.com/nostr-protocol/nips/blob/master/20.md)
 - [x] NIP-22: [Event `created_at` limits](https://github.com/nostr-protocol/nips/blob/master/22.md) (_future-dated events only_)
 - [x] NIP-26: [Event Delegation](https://github.com/nostr-protocol/nips/blob/master/26.md)
 

src/db.rs

@@ -159,9 +159,8 @@ pub async fn db_writer(
                         event.get_event_id_prefix()
                     );
                     notice_tx
-                        .try_send(Notice::blocked(
+                        .try_send(Notice::message(
-                            event.id,
+                            "pubkey is not allowed to publish to this relay".to_owned(),
-                            "pubkey is not allowed to publish to this relay",
                         ))
                         .ok();
                     continue;
@@ -193,9 +192,9 @@ pub async fn db_writer(
                                   event.get_author_prefix()
                             );
                             notice_tx
-                                .try_send(Notice::blocked(
+                                .try_send(Notice::message(
-                                    event.id,
+                                    "NIP-05 verification is no longer valid (expired/wrong domain)"
-                                    "NIP-05 verification is no longer valid (expired/wrong domain)",
+                                        .to_owned(),
                                 ))
                                 .ok();
                             continue;
@@ -207,9 +206,8 @@ pub async fn db_writer(
                             event.get_author_prefix()
                         );
                         notice_tx
-                            .try_send(Notice::blocked(
+                            .try_send(Notice::message(
-                                event.id,
+                                "NIP-05 verification needed to publish events".to_owned(),
-                                "NIP-05 verification needed to publish events",
                             ))
                             .ok();
                         continue;
@@ -252,8 +250,9 @@ pub async fn db_writer(
                     }
                     Err(err) => {
                         warn!("event insert failed: {:?}", err);
-                        let msg = "relay experienced an error trying to publish the latest event";
+                        let msg =
-                        notice_tx.try_send(Notice::error(event.id, msg)).ok();
+                            "relay experienced an error trying to publish the latest event".into();
+                        notice_tx.try_send(Notice::err_msg(msg, event.id)).ok();
                     }
                 }
             }

src/error.rs

@@ -17,16 +17,10 @@ pub enum Error {
     ConnWriteError,
     #[error("EVENT parse failed")]
     EventParseFailed,
-    #[error("CLOSE message parse failed")]
+    #[error("ClOSE message parse failed")]
     CloseParseFailed,
-    #[error("Event invalid signature")]
+    #[error("Event validation failed")]
-    EventInvalidSignature,
+    EventInvalid,
-    #[error("Event invalid id")]
-    EventInvalidId,
-    #[error("Event malformed pubkey")]
-    EventMalformedPubkey,
-    #[error("Event could not canonicalize")]
-    EventCouldNotCanonicalize,
     #[error("Event too large")]
     EventMaxLengthError(usize),
     #[error("Subscription identifier max length exceeded")]

src/event.rs

@@ -27,12 +27,6 @@ pub struct EventCmd {
     event: Event,
 }
 
-impl EventCmd {
-    pub fn event_id(&self) -> &str {
-        &self.event.id
-    }
-}
-
 /// Parsed nostr event.
 #[derive(Serialize, Deserialize, PartialEq, Eq, Debug, Clone)]
 pub struct Event {
@@ -89,13 +83,13 @@ impl From<EventCmd> for Result<Event> {
         // ensure command is correct
         if ec.cmd != "EVENT" {
             Err(CommandUnknownError)
-        } else {
+        } else if ec.event.is_valid() {
-            ec.event.validate().map(|_| {
             let mut e = ec.event;
             e.build_index();
             e.update_delegation();
-                e
+            Ok(e)
-            })
+        } else {
+            Err(EventInvalid)
         }
     }
 }
@@ -226,7 +220,7 @@ impl Event {
     }
 
     /// Check if this event has a valid signature.
-    fn validate(&self) -> Result<()> {
+    fn is_valid(&self) -> bool {
         // TODO: return a Result with a reason for invalid events
         // validation is performed by:
         // * parsing JSON string into event fields
@@ -235,8 +229,8 @@ impl Event {
         // * serialize with no spaces/newlines
         let c_opt = self.to_canonical();
         if c_opt.is_none() {
-            debug!("could not canonicalize");
+            debug!("event could not be canonicalized");
-            return Err(EventCouldNotCanonicalize);
+            return false;
         }
         let c = c_opt.unwrap();
         // * compute the sha256sum.
@@ -245,21 +239,21 @@ impl Event {
         // * ensure the id matches the computed sha256sum.
         if self.id != hex_digest {
             debug!("event id does not match digest");
-            return Err(EventInvalidId);
+            return false;
         }
         // * validate the message digest (sig) using the pubkey & computed sha256 message hash.
         let sig = schnorr::Signature::from_str(&self.sig).unwrap();
         if let Ok(msg) = secp256k1::Message::from_slice(digest.as_ref()) {
             if let Ok(pubkey) = XOnlyPublicKey::from_str(&self.pubkey) {
-                SECP.verify_schnorr(&sig, &msg, &pubkey)
+                let verify = SECP.verify_schnorr(&sig, &msg, &pubkey);
-                    .map_err(|_| EventInvalidSignature)
+                matches!(verify, Ok(()))
             } else {
                 debug!("client sent malformed pubkey");
-                Err(EventMalformedPubkey)
+                false
             }
         } else {
             info!("error converting digest to secp256k1 message");
-            Err(EventInvalidSignature)
+            false
         }
     }
 

src/info.rs

@@ -35,7 +35,7 @@ impl From<config::Info> for RelayInfo {
             description: i.description,
             pubkey: i.pubkey,
             contact: i.contact,
-            supported_nips: Some(vec![1, 2, 9, 11, 12, 15, 16, 20, 22, 26]),
+            supported_nips: Some(vec![1, 2, 9, 11, 12, 15, 16, 22, 26]),
             software: Some("https://git.sr.ht/~gheartsfield/nostr-rs-relay".to_owned()),
             version: CARGO_PKG_VERSION.map(|x| x.to_owned()),
         }

src/notice.rs

@@ -1,15 +1,13 @@
+use crate::error;
+
 pub enum EventResultStatus {
     Saved,
     Duplicate,
-    Invalid,
+    Error(String),
-    Blocked,
-    RateLimited,
-    Error,
 }
 
 pub struct EventResult {
     pub id: String,
-    pub msg: String,
     pub status: EventResultStatus,
 }
 
@@ -18,69 +16,33 @@ pub enum Notice {
     EventResult(EventResult),
 }
 
-impl EventResultStatus {
-    pub fn to_bool(&self) -> bool {
-        match self {
-            Self::Saved => true,
-            Self::Duplicate => true,
-            Self::Invalid => false,
-            Self::Blocked => false,
-            Self::RateLimited => false,
-            Self::Error => false,
-        }
-    }
-
-    pub fn prefix(&self) -> &'static str {
-        match self {
-            Self::Saved => "saved",
-            Self::Duplicate => "duplicate",
-            Self::Invalid => "invalid",
-            Self::Blocked => "blocked",
-            Self::RateLimited => "rate-limited",
-            Self::Error => "error",
-        }
-    }
-}
-
 impl Notice {
-    //pub fn err(err: error::Error, id: String) -> Notice {
+    pub fn err(err: error::Error, id: String) -> Notice {
-    //    Notice::err_msg(format!("{}", err), id)
+        Notice::err_msg(format!("{}", err), id)
-    //}
+    }
 
     pub fn message(msg: String) -> Notice {
         Notice::Message(msg)
     }
 
-    fn prefixed(id: String, msg: &str, status: EventResultStatus) -> Notice {
-        let msg = format!("{}: {}", status.prefix(), msg);
-        Notice::EventResult(EventResult { id, msg, status })
-    }
-
-    pub fn invalid(id: String, msg: &str) -> Notice {
-        Notice::prefixed(id, msg, EventResultStatus::Invalid)
-    }
-
-    pub fn blocked(id: String, msg: &str) -> Notice {
-        Notice::prefixed(id, msg, EventResultStatus::Blocked)
-    }
-
-    pub fn rate_limited(id: String, msg: &str) -> Notice {
-        Notice::prefixed(id, msg, EventResultStatus::RateLimited)
-    }
-
-    pub fn duplicate(id: String) -> Notice {
-        Notice::prefixed(id, "", EventResultStatus::Duplicate)
-    }
-
-    pub fn error(id: String, msg: &str) -> Notice {
-        Notice::prefixed(id, msg, EventResultStatus::Error)
-    }
-
     pub fn saved(id: String) -> Notice {
         Notice::EventResult(EventResult {
             id,
-            msg: "".into(),
             status: EventResultStatus::Saved,
         })
     }
+
+    pub fn duplicate(id: String) -> Notice {
+        Notice::EventResult(EventResult {
+            id,
+            status: EventResultStatus::Duplicate,
+        })
+    }
+
+    pub fn err_msg(msg: String, id: String) -> Notice {
+        Notice::EventResult(EventResult {
+            id,
+            status: EventResultStatus::Error(msg),
+        })
+    }
 }

src/server.rs

@@ -10,7 +10,7 @@ use crate::event::Event;
 use crate::event::EventCmd;
 use crate::info::RelayInfo;
 use crate::nip05;
-use crate::notice::Notice;
+use crate::notice::{EventResultStatus, Notice};
 use crate::subscription::Subscription;
 use futures::SinkExt;
 use futures::StreamExt;
@@ -409,7 +409,11 @@ fn convert_to_msg(msg: String, max_bytes: Option<usize>) -> Result<NostrMessage>
 fn make_notice_message(notice: Notice) -> Message {
     let json = match notice {
         Notice::Message(ref msg) => json!(["NOTICE", msg]),
-        Notice::EventResult(ref res) => json!(["OK", res.id, res.status.to_bool(), res.msg]),
+        Notice::EventResult(ref res) => match &res.status {
+            EventResultStatus::Saved => json!(["OK", res.id, "true"]),
+            EventResultStatus::Duplicate => json!(["OK", res.id, "true", "duplicate"]),
+            EventResultStatus::Error(msg) => json!(["OK", res.id, "false", msg]),
+        },
     };
 
     Message::text(json.to_string())
@@ -572,7 +576,6 @@ async fn nostr_server(
                     Ok(NostrMessage::EventMsg(ec)) => {
                         // An EventCmd needs to be validated to be converted into an Event
                         // handle each type of message
-                        let evid = ec.event_id().to_owned();
                         let parsed : Result<Event> = Result::<Event>::from(ec);
                         match parsed {
                             Ok(e) => {
@@ -587,15 +590,15 @@ async fn nostr_server(
                 } else {
                     info!("client: {} sent a far future-dated event", cid);
                     if let Some(fut_sec) = settings.options.reject_future_seconds {
-                        let msg = format!("The event created_at field is out of the acceptable range (+{}sec) for this relay.",fut_sec);
+                        let msg = format!("The event created_at field is out of the acceptable range (+{}sec) for this relay and was not stored.",fut_sec);
-                        let notice = Notice::invalid(e.id, &msg);
+                        let notice = Notice::err_msg(msg, e.id);
                         ws_stream.send(make_notice_message(notice)).await.ok();
                     }
                 }
                             },
-                            Err(e) => {
+                            Err(_) => {
                                 info!("client: {} sent an invalid event", cid);
-                                ws_stream.send(make_notice_message(Notice::invalid(evid, &format!("{}", e)))).await.ok();
+                                ws_stream.send(make_notice_message(Notice::message("event was invalid".into()))).await.ok();
                             }
                         }
                     },
@@ -617,7 +620,7 @@ async fn nostr_server(
                             },
                             Err(e) => {
                                 info!("Subscription error: {}", e);
-                                ws_stream.send(make_notice_message(Notice::message(format!("Subscription error: {}", e)))).await.ok();
+                                ws_stream.send(make_notice_message(Notice::err(e, s.id))).await.ok();
                             }
                         }
                     },