feat: withdraw and call sol (#74)

Author: skosito

Anchor.toml

@@ -5,6 +5,7 @@ resolution = true
 skip-lint = false
 
 [programs.localnet]
+connected = "4xEw862A2SEwMjofPkUyd4NEekmVJKJsdHkK3UkAtDrc"
 gateway = "ZETAjseVjuFsxdRxo6MmTCvqFwb3ZHUx56Co3vCmGis"
 
 [registry]

Cargo.lock

@@ -0,0 +1,23 @@
+[package]
+name = "connected"
+version = "0.1.0"
+description = "Test program used for testing withdraw and call feature"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib", "lib"]
+name = "connected"
+
+[features]
+default = []
+cpi = ["no-entrypoint"]
+no-entrypoint = []
+no-idl = []
+no-log-ix-name = []
+idl-build = ["anchor-lang/idl-build"]
+
+[dependencies]
+anchor-lang = { version = "=0.30.0" }
+anchor-spl = { version = "=0.30.0", features = ["idl-build"] }
+spl-associated-token-account = "3.0.2"
+solana-program = "=1.18.15"

programs/connected/Cargo.toml

@@ -0,0 +1,2 @@
+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

programs/connected/Xargo.toml

@@ -0,0 +1,78 @@
+use anchor_lang::prelude::*;
+use std::mem::size_of;
+
+declare_id!("4xEw862A2SEwMjofPkUyd4NEekmVJKJsdHkK3UkAtDrc");
+
+// NOTE: this is just example contract that can be called from gateway in execute function for testing withdraw and call
+#[program]
+pub mod connected {
+    use super::*;
+
+    pub fn initialize(ctx: Context<Initialize>) -> Result<()> {
+        Ok(())
+    }
+
+    pub fn on_call(
+        ctx: Context<OnCall>,
+        amount: u64,
+        sender: [u8; 20],
+        data: Vec<u8>,
+    ) -> Result<()> {
+        let pda = &mut ctx.accounts.pda;
+
+        // Store the sender's public key
+        pda.last_sender = sender;
+
+        // Convert data to a string and store it
+        let message = String::from_utf8(data).map_err(|_| ErrorCode::InvalidDataFormat)?;
+        pda.last_message = message;
+
+        // Transfer some portion of lamports transferred from gateway to another account
+        pda.sub_lamports(amount / 2)?;
+        ctx.accounts.random_wallet.add_lamports(amount / 2)?;
+
+        msg!(
+            "On call executed with amount {}, sender {:?} and message {}",
+            amount,
+            pda.last_sender,
+            pda.last_message
+        );
+
+        Ok(())
+    }
+}
+
+#[derive(Accounts)]
+pub struct Initialize<'info> {
+    #[account(mut)]
+    pub signer: Signer<'info>,
+
+    #[account(init, payer = signer, space = size_of::<Pda>() + 32, seeds = [b"connected"], bump)]
+    pub pda: Account<'info, Pda>,
+
+    pub system_program: Program<'info, System>,
+}
+
+#[derive(Accounts)]
+pub struct OnCall<'info> {
+    #[account(mut, seeds = [b"connected"], bump)]
+    pub pda: Account<'info, Pda>,
+
+    pub gateway_pda: UncheckedAccount<'info>,
+
+    pub random_wallet: UncheckedAccount<'info>,
+
+    pub system_program: Program<'info, System>,
+}
+
+#[account]
+pub struct Pda {
+    pub last_sender: [u8; 20],
+    pub last_message: String,
+}
+
+#[error_code]
+pub enum ErrorCode {
+    #[msg("The data provided could not be converted to a valid UTF-8 string.")]
+    InvalidDataFormat,
+}

programs/connected/src/lib.rs

@@ -1,7 +1,7 @@
 [package]
 name = "gateway"
 version = "0.1.0"
-description = "Created with Anchor"
+description = "ZetaChain Gateway program on Solana"
 edition = "2021"
 
 [lib]