feat: contract is now upgradeable through participants voting for upd…

…ates (#714)

* Moved contract various states to state.rs

* Added near-rng crate

* Added ability to deploy and update contract configs

chain-signatures/contract/Cargo.toml

@@ -15,6 +15,7 @@ schemars = "0.8"
 k256 = { version = "0.13.1", features = ["sha256", "ecdsa", "serde", "arithmetic", "expose-field"] }
 crypto-shared = { path = "../crypto-shared" }
 near-gas = { version = "0.2.5", features = ["serde", "borsh", "schemars"] }
+near-rng = "0.1.1"
 thiserror = "1"
 
 [dev-dependencies]

chain-signatures/contract/src/config.rs

@@ -0,0 +1,30 @@
+use borsh::{self, BorshDeserialize, BorshSerialize};
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, Serialize, Deserialize, BorshSerialize, BorshDeserialize, PartialEq, Eq)]
+pub struct Config {
+    /// Timeout for triple generation in milliseconds.
+    pub triple_timeout: u64,
+    /// Timeout for presignature generation in milliseconds.
+    pub presignature_timeout: u64,
+    /// Timeout for signature generation in milliseconds.
+    pub signature_timeout: u64,
+}
+
+impl Default for Config {
+    fn default() -> Self {
+        Self {
+            triple_timeout: min_to_ms(20),
+            presignature_timeout: secs_to_ms(30),
+            signature_timeout: secs_to_ms(30),
+        }
+    }
+}
+
+pub const fn secs_to_ms(secs: u64) -> u64 {
+    secs * 1000
+}
+
+pub const fn min_to_ms(min: u64) -> u64 {
+    min * 60 * 1000
+}

chain-signatures/contract/src/errors.rs

@@ -66,8 +66,18 @@ pub enum VoteError {
     EpochMismatch,
     #[error("Number of participants cannot go below threshold.")]
     ParticipantsBelowThreshold,
+    #[error("Update not found.")]
+    UpdateNotFound,
     #[error("Unexpected protocol state: {0}")]
     UnexpectedProtocolState(String),
+    #[error("Unexpected: {0}")]
+    Unexpected(String),
+}
+
+impl near_sdk::FunctionError for VoteError {
+    fn panic(&self) -> ! {
+        crate::env::panic_str(&self.to_string())
+    }
 }
 
 #[derive(Debug, thiserror::Error)]
@@ -77,7 +87,7 @@ pub enum MpcContractError {
     #[error("respond fn error: {0}")]
     RespondError(RespondError),
     #[error("vote_* fn error: {0}")]
-    VoteError(VoteError),
+    VoteError(#[from] VoteError),
     #[error("init fn error: {0}")]
     InitError(InitError),
     #[error("join fn error: {0}")]