THRIFT-6057: Limit struct read/write recursion depth in Rust library#3548
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THRIFT-6057: Limit struct read/write recursion depth in Rust library#3548Jens-G wants to merge 1 commit into
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Client: rs Introduces a thread-local DepthGuard RAII type in thrift::protocol that increments a per-thread counter on construction and decrements it via Drop, ensuring the counter is always restored even when the body returns an error. Generated read_from_in_protocol and write_to_out_protocol implementations (for both structs and unions) acquire a DepthGuard at entry; a depth >= 64 causes an immediate ProtocolError with kind DepthLimit. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
DepthGuardRAII type inthrift::protocolthat increments a per-thread counter on construction and decrements it viaDropread_from_in_protocolandwrite_to_out_protocolimplementations (for both structs and unions) acquire aDepthGuardat entryProtocolErrorwithkind = DepthLimitTest plan
cargo testinlib/rspassesdepth_guard_allows_up_to_limit,depth_guard_rejects_at_limit,depth_guard_restores_depth_on_droppass🤖 Generated with Claude Code
Co-Authored-By: Claude Sonnet 4.6 noreply@anthropic.com