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fix(mock-amm): prevent mainnet initialization of test-only AMM #65

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Merged
Junman140 merged 3 commits into from
Aug 19, 2026
Merged

fix(mock-amm): prevent mainnet initialization of test-only AMM #65

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b3b1efb
fix(mock-amm): reject initialize() on mainnet network passphrase
akintewe Aug 18, 2026
86a7b10
chore(deploy): reject DEPLOY_AMM flag in mainnet deployment script
akintewe Aug 18, 2026
a9a934f
Merge remote-tracking branch 'upstream/main' into fix/mock-amm-mainne…
akintewe Aug 19, 2026
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20 changes: 18 additions & 2 deletions Stellar-contracts-v1/mock-amm/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,18 @@
//! Mock AMM pool for testing wPi -> MockUSDC swaps.
//! Hardcodes a 1:1 swap rate (or configurable) for testnet simulation without complex math.

use soroban_sdk::{contract, contracterror, contractimpl, contracttype, token, Address, Env};
use soroban_sdk::{
contract, contracterror, contractimpl, contracttype, token, Address, BytesN, Env,
};

/// SHA-256 hash of the Stellar mainnet network passphrase
/// ("Public Global Stellar Network ; September 2015"). This is the value
/// `env.ledger().network_id()` returns when a contract is running on
/// mainnet. mock-amm is test-only and must never be initialized there.
const MAINNET_NETWORK_ID: [u8; 32] = [
0x7a, 0xc3, 0x39, 0x97, 0x54, 0x4e, 0x31, 0x75, 0xd2, 0x66, 0xbd, 0x02, 0x24, 0x39, 0xb2, 0x2c,
0xdb, 0x16, 0x50, 0x8c, 0x01, 0x16, 0x3f, 0x26, 0xe5, 0xcb, 0x2a, 0x3e, 0x10, 0x45, 0xa9, 0x79,
];

#[contracttype]
#[derive(Clone)]
Expand All @@ -20,6 +31,7 @@ pub enum Error {
NotAdmin = 1,
InsufficientLiquidity = 2,
SlippageExceeded = 3,
MainnetNotSupported = 4,
}

#[contract]
Expand All @@ -33,7 +45,10 @@ impl MockAmm {
token_in: Address,
token_out: Address,
rate_bps: u32,
) {
) -> Result<(), Error> {
if env.ledger().network_id() == BytesN::from_array(&env, &MAINNET_NETWORK_ID) {
return Err(Error::MainnetNotSupported);
}
if env.storage().instance().has(&DataKey::Admin) {
panic!("already initialized");
}
Expand All @@ -42,6 +57,7 @@ impl MockAmm {
env.storage().instance().set(&DataKey::TokenIn, &token_in);
env.storage().instance().set(&DataKey::TokenOut, &token_out);
env.storage().instance().set(&DataKey::Rate, &rate_bps);
Ok(())
}

/// Swap token_in (wPi) for token_out (MockUSDC)
Expand Down
24 changes: 5 additions & 19 deletions scripts/deploy_mainnet.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -11,10 +11,8 @@ SOURCE_ACCOUNT="${STELLAR_ACCOUNT:-${ADMIN_IDENTITY:-}}"
ADMIN_ADDRESS="${ADMIN_ADDRESS:-}"
RPC_URL="${STELLAR_RPC_URL:-}"
DEPLOY_AMM="${DEPLOY_AMM:-false}"
RATE_BPS="${RATE_BPS:-1000000}"

WPI_WASM="${WPI_WASM:-${CONTRACT_DIR}/target/wasm32-unknown-unknown/release/wpi_token.wasm}"
AMM_WASM="${AMM_WASM:-${CONTRACT_DIR}/target/wasm32-unknown-unknown/release/mock_amm.wasm}"

NETWORK_ARGS=(--network "$NETWORK" --rpc-url "$RPC_URL" --network-passphrase "$NETWORK_PASSPHRASE")

Expand All @@ -31,6 +29,11 @@ ensure_cli() {
}

require_mainnet_inputs() {
if [[ "$DEPLOY_AMM" == "true" ]]; then
echo "ERROR: mock-amm is test-only and must never be deployed to mainnet. Unset DEPLOY_AMM." >&2
exit 1
fi

if [[ -z "$SOURCE_ACCOUNT" ]]; then
echo "ERROR: set STELLAR_ACCOUNT or ADMIN_IDENTITY to the mainnet signing identity." >&2
exit 1
Expand Down Expand Up @@ -120,25 +123,8 @@ WPI_CONTRACT_ID="$(deploy_uploaded_wasm WPI "$WPI_HASH")"
echo "== Initialize wPI contract =="
invoke_contract "$WPI_CONTRACT_ID" initialize --admin "$ADMIN_ADDRESS"

if [[ "$DEPLOY_AMM" == "true" ]]; then
AMM_HASH="$(upload_wasm MOCK_AMM "$AMM_WASM")"
MOCK_AMM_CONTRACT_ID="$(deploy_uploaded_wasm MOCK_AMM "$AMM_HASH")"

echo "== Initialize optional AMM contract =="
invoke_contract "$MOCK_AMM_CONTRACT_ID" initialize \
--admin "$ADMIN_ADDRESS" \
--token_in "$WPI_CONTRACT_ID" \
--rate_bps "$RATE_BPS"
fi

cat <<EOF

Mainnet deployment complete.
export WPI_CONTRACT_ID=${WPI_CONTRACT_ID}
EOF

if [[ "$DEPLOY_AMM" == "true" ]]; then
cat <<EOF
export MOCK_AMM_CONTRACT_ID=${MOCK_AMM_CONTRACT_ID}
EOF
fi
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