Add a fixed size message type, hacky for now

Change-Id: I62f3bbe6bb760c7dd3c21f6bd98de54dfb0bb00b

solana/anchor-bridge/programs/anchor-bridge/src/api/publish_message.rs

@@ -3,15 +3,18 @@ use anchor_lang::{prelude::*, solana_program};
 use crate::{
     accounts,
     anchor_bridge::Bridge,
-    types::{BridgeConfig, Index},
+    types::{BridgeConfig, Index, Chain},
     PublishMessage,
     Result,
     MAX_LEN_GUARDIAN_KEYS,
 };
 
-// Constant fee for VAA transactions, measured in lamports.
+/// Constant fee for VAA transactions, measured in lamports.
 const VAA_TX_FEE: u64 = 18 * 10000;
 
+/// Maximum size of a posted VAA
+pub const MAX_PAYLOAD_SIZE: usize = 400;
+
 pub fn publish_message(bridge: &mut Bridge, ctx: Context<PublishMessage>) -> Result<()> {
     Ok(())
 }
@@ -50,6 +53,36 @@ pub struct SignatureState {
 pub struct ClaimedVAA {
     /// hash of the vaa
     pub hash: [u8; 32],
+
     /// time the vaa was submitted
     pub vaa_time: u32,
 }
+
+/// Record of a posted wormhole message.
+#[repr(C)]
+#[derive(AnchorSerialize, AnchorDeserialize, Clone, Copy, Debug)]
+pub struct PostedMessage {
+    /// header of the posted VAA
+    pub vaa_version: u8,
+
+    /// time the vaa was submitted
+    pub vaa_time: u32,
+
+    /// Account where signatures are stored
+    pub vaa_signature_account: Pubkey,
+
+    /// time the posted message was created
+    pub submission_time: u32,
+
+    /// unique nonce for this message
+    pub nonce: u32,
+
+    /// emitter of the message
+    pub emitter_chain: Chain,
+
+    /// emitter of the message
+    pub emitter_address: [u8; 32],
+
+    /// message payload
+    pub payload: [[u8; 32]; 13],
+}

solana/anchor-bridge/programs/anchor-bridge/src/lib.rs

@@ -3,19 +3,13 @@ use anchor_lang::{prelude::*, solana_program};
 mod api;
 mod types;
 
-use types::{Index, BridgeConfig};
+use api::PostedMessage;
+use types::{Index, BridgeConfig, Chain};
 
 // Without this, Anchor's derivation macros break. It requires names with no path components at all
 // otherwise it errors.
 use anchor_bridge::Bridge;
 
-/// An enum with labeled network identifiers. These must be consistent accross all wormhole
-/// contracts deployed on each chain.
-#[repr(u8)]
-pub enum Chain {
-    Solana = 1u8,
-}
-
 /// chain id of this chain
 pub const CHAIN_ID_SOLANA: u8 = Chain::Solana as u8;
 /// maximum number of guardians
@@ -90,6 +84,9 @@ pub struct PublishMessage<'info> {
     #[account(signer)]
     pub emitter: AccountInfo<'info>,
 
+    /// State struct, derived by #[state], used for associated accounts.
+    pub state: ProgramState<'info, Bridge>,
+
     /// Instructions used for transaction reflection.
     pub instructions: AccountInfo<'info>,
 

solana/anchor-bridge/programs/anchor-bridge/src/types.rs

@@ -12,3 +12,11 @@ pub struct BridgeConfig {
     /// this period we still trust the old guardian set.
     pub guardian_set_expiration_time: u32,
 }
+
+/// An enum with labeled network identifiers. These must be consistent accross all wormhole
+/// contracts deployed on each chain.
+#[repr(u8)]
+#[derive(AnchorSerialize, AnchorDeserialize, Clone, Copy, Debug)]
+pub enum Chain {
+    Solana = 1u8,
+}