Fix reentrancy, add state machine tests, document replay safety and build profile - #230
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…uild profile - Reorder state mutations before external calls in release, refund, release_issue, and withdraw to follow checks-effects-interactions pattern (Issue MergeFi#4) - Add exhaustive state-machine tests for EscrowStatus and IssueStatus+Milestone.closed transitions (Issue MergeFi#26) - Document Soroban authorization framework replay protection guarantees and operational recommendations (Issue MergeFi#22) - Investigate WASM build profile, document findings, make stellar contract optimize a required build step (Issue MergeFi#24)
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Closes #4, Closes #22, Closes #24, Closes #26
Type of Change
Summary
This PR addresses four issues in a single focused changeset:
Reentrancy fix (Formal reentrancy audit of all
token::Clientcross-contract calls #4): Reordered state mutations before external calls inrelease,refund,release_issue, andwithdrawto follow the checks-effects-interactions pattern, preventing potential reentrancy vulnerabilities.Replay safety documentation (Research cross-contract and cross-network replay/nonce safety of admin-authorized operations #22): Documented Soroban's authorization framework guarantees, confirming that
SorobanAuthorizationEntrybindings to contract address, network passphrase, and function name prevent cross-contract, cross-network, and cross-function replay attacks.WASM build profile investigation (Investigate WASM binary size and compute-cost effectiveness of current release profile settings #24): Measured actual WASM sizes, confirmed
overflow-checks = trueis intentional defense-in-depth, madestellar contract optimizea required build step (previously optional), and documented findings.State machine model (Formal state-machine model of
EscrowStatus/IssueStatustransitions to prove no invalid transition is reachable #26): Added exhaustive property-based tests validating all valid transitions forEscrowStatusand the combinedIssueStatus+Milestone.closedstate space, proving no invalid transition is reachable.Motivation / Context
Closes #4, Closes #22, Closes #24, Closes #26