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| 1 | +#include "barretenberg/avm_fuzzer/mutations/tx_types/accumulated_data.hpp" |
| 2 | + |
| 3 | +#include "barretenberg/avm_fuzzer/fuzz_lib/constants.hpp" |
| 4 | +#include "barretenberg/avm_fuzzer/mutations/basic_types/field.hpp" |
| 5 | +#include "barretenberg/avm_fuzzer/mutations/basic_types/vector.hpp" |
| 6 | +#include "barretenberg/avm_fuzzer/mutations/configuration.hpp" |
| 7 | +#include "barretenberg/vm2/common/avm_io.hpp" |
| 8 | + |
| 9 | +using bb::avm2::AztecAddress; |
| 10 | +using bb::avm2::FF; |
| 11 | + |
| 12 | +namespace { |
| 13 | + |
| 14 | +// Generate a random note hash |
| 15 | +FF generate_note_hash(std::mt19937_64& rng) |
| 16 | +{ |
| 17 | + return generate_random_field(rng); |
| 18 | +} |
| 19 | + |
| 20 | +void mutate_note_hash(FF& note_hash, std::mt19937_64& rng) |
| 21 | +{ |
| 22 | + mutate_field(note_hash, rng, BASIC_FIELD_MUTATION_CONFIGURATION); |
| 23 | +} |
| 24 | + |
| 25 | +// Generate a random nullifier |
| 26 | +FF generate_nullifier(std::mt19937_64& rng) |
| 27 | +{ |
| 28 | + return generate_random_field(rng); |
| 29 | +} |
| 30 | + |
| 31 | +void mutate_nullifier(FF& nullifier, std::mt19937_64& rng) |
| 32 | +{ |
| 33 | + mutate_field(nullifier, rng, BASIC_FIELD_MUTATION_CONFIGURATION); |
| 34 | +} |
| 35 | + |
| 36 | +// Generate a random L2 to L1 message |
| 37 | +ScopedL2ToL1Message generate_l2_to_l1_message(std::mt19937_64& rng) |
| 38 | +{ |
| 39 | + return ScopedL2ToL1Message{ |
| 40 | + .message = L2ToL1Message{ .recipient = generate_random_field(rng), .content = generate_random_field(rng) }, |
| 41 | + .contract_address = generate_random_field(rng), |
| 42 | + }; |
| 43 | +} |
| 44 | + |
| 45 | +void mutate_l2_to_l1_msg(ScopedL2ToL1Message& msg, std::mt19937_64& rng) |
| 46 | +{ |
| 47 | + auto choice = std::uniform_int_distribution<uint8_t>(0, 2)(rng); |
| 48 | + |
| 49 | + switch (choice) { |
| 50 | + case 0: |
| 51 | + // Mutate recipient |
| 52 | + msg.message.recipient = generate_random_field(rng); |
| 53 | + break; |
| 54 | + case 1: |
| 55 | + // Mutate content |
| 56 | + msg.message.content = generate_random_field(rng); |
| 57 | + break; |
| 58 | + case 2: |
| 59 | + // Mutate contract_address |
| 60 | + msg.contract_address = generate_random_field(rng); |
| 61 | + break; |
| 62 | + default: |
| 63 | + break; |
| 64 | + } |
| 65 | +} |
| 66 | + |
| 67 | +AccumulatedData generate_accumulated_data(std::mt19937_64& rng) |
| 68 | +{ |
| 69 | + // When we generate new accumulated data we can simply generate a small number of entries |
| 70 | + // We test the limits during mutation |
| 71 | + std::vector<FF> note_hashes; |
| 72 | + size_t num_note_hashes = std::uniform_int_distribution<size_t>(0, 4)(rng); |
| 73 | + note_hashes.reserve(num_note_hashes); |
| 74 | + for (size_t i = 0; i < num_note_hashes; i++) { |
| 75 | + note_hashes.push_back(generate_note_hash(rng)); |
| 76 | + } |
| 77 | + std::vector<FF> nullifiers; |
| 78 | + size_t num_nullifiers = std::uniform_int_distribution<size_t>(0, 4)(rng); |
| 79 | + nullifiers.reserve(num_nullifiers); |
| 80 | + for (size_t i = 0; i < num_nullifiers; i++) { |
| 81 | + nullifiers.push_back(generate_nullifier(rng)); |
| 82 | + } |
| 83 | + std::vector<ScopedL2ToL1Message> l2_to_l1_messages; |
| 84 | + size_t num_messages = std::uniform_int_distribution<size_t>(0, 4)(rng); |
| 85 | + l2_to_l1_messages.reserve(num_messages); |
| 86 | + for (size_t i = 0; i < num_messages; i++) { |
| 87 | + l2_to_l1_messages.push_back(generate_l2_to_l1_message(rng)); |
| 88 | + } |
| 89 | + |
| 90 | + return AccumulatedData{ |
| 91 | + .note_hashes = note_hashes, |
| 92 | + .nullifiers = nullifiers, |
| 93 | + .l2_to_l1_messages = l2_to_l1_messages, |
| 94 | + }; |
| 95 | +} |
| 96 | + |
| 97 | +void mutate_accumulated_data(AccumulatedData& input, std::mt19937_64& rng) |
| 98 | +{ |
| 99 | + using namespace bb::avm2::fuzzer; |
| 100 | + // We only really care about the existence of note hashes, nullifiers, and L2 to L1 messages |
| 101 | + // or if these values end up triggering limit errors during execution. |
| 102 | + auto choice = ACCUMULATED_DATA_MUTATION_CONFIGURATION.select(rng); |
| 103 | + switch (choice) { |
| 104 | + case AccumulatedDataMutationOptions::NoteHashes: |
| 105 | + mutate_vec<FF>(input.note_hashes, rng, mutate_note_hash, generate_note_hash, BASIC_VEC_MUTATION_CONFIGURATION); |
| 106 | + break; |
| 107 | + case AccumulatedDataMutationOptions::NoteHashesLimit: { |
| 108 | + size_t original_size = input.note_hashes.size(); |
| 109 | + input.note_hashes.resize(MAX_NOTE_HASHES_PER_TX); |
| 110 | + for (size_t i = original_size; i < MAX_NOTE_HASHES_PER_TX; i++) { |
| 111 | + input.note_hashes[i] = generate_note_hash(rng); |
| 112 | + } |
| 113 | + break; |
| 114 | + } |
| 115 | + case AccumulatedDataMutationOptions::Nullifiers: |
| 116 | + mutate_vec<FF>(input.nullifiers, rng, mutate_nullifier, generate_nullifier, BASIC_VEC_MUTATION_CONFIGURATION); |
| 117 | + break; |
| 118 | + case AccumulatedDataMutationOptions::NullifiersLimit: { |
| 119 | + size_t original_size = input.nullifiers.size(); |
| 120 | + input.nullifiers.resize(MAX_NULLIFIERS_PER_TX); |
| 121 | + for (size_t i = original_size; i < MAX_NULLIFIERS_PER_TX; i++) { |
| 122 | + input.nullifiers[i] = generate_nullifier(rng); |
| 123 | + } |
| 124 | + break; |
| 125 | + } |
| 126 | + case AccumulatedDataMutationOptions::L2ToL1Messages: |
| 127 | + mutate_vec<ScopedL2ToL1Message>(input.l2_to_l1_messages, |
| 128 | + rng, |
| 129 | + mutate_l2_to_l1_msg, |
| 130 | + generate_l2_to_l1_message, |
| 131 | + BASIC_VEC_MUTATION_CONFIGURATION); |
| 132 | + break; |
| 133 | + case AccumulatedDataMutationOptions::L2ToL1MessagesLimit: { |
| 134 | + size_t original_size = input.l2_to_l1_messages.size(); |
| 135 | + input.l2_to_l1_messages.resize(MAX_L2_TO_L1_MSGS_PER_TX); |
| 136 | + for (size_t i = original_size; i < MAX_L2_TO_L1_MSGS_PER_TX; i++) { |
| 137 | + input.l2_to_l1_messages[i] = generate_l2_to_l1_message(rng); |
| 138 | + } |
| 139 | + break; |
| 140 | + } |
| 141 | + } |
| 142 | +} |
| 143 | + |
| 144 | +} // namespace |
| 145 | + |
| 146 | +namespace bb::avm2::fuzzer { |
| 147 | + |
| 148 | +AccumulatedData generate_non_revertible_accumulated_data(std::mt19937_64& rng) |
| 149 | +{ |
| 150 | + AccumulatedData data = generate_accumulated_data(rng); |
| 151 | + if (data.nullifiers.empty()) { |
| 152 | + // Need to ensure the "tx nullifier" exists |
| 153 | + data.nullifiers.push_back(generate_nullifier(rng)); |
| 154 | + } |
| 155 | + return data; |
| 156 | +} |
| 157 | +void mutate_non_revertible_accumulated_data(AccumulatedData& data, std::mt19937_64& rng) |
| 158 | +{ |
| 159 | + mutate_accumulated_data(data, rng); |
| 160 | + if (data.nullifiers.empty()) { |
| 161 | + // Need to ensure the "tx nullifier" exists |
| 162 | + data.nullifiers.push_back(generate_nullifier(rng)); |
| 163 | + } |
| 164 | +} |
| 165 | + |
| 166 | +AccumulatedData generate_revertible_accumulated_data(std::mt19937_64& rng) |
| 167 | +{ |
| 168 | + return generate_accumulated_data(rng); |
| 169 | +} |
| 170 | + |
| 171 | +void mutate_revertible_accumulated_data(AccumulatedData& data, std::mt19937_64& rng) |
| 172 | +{ |
| 173 | + mutate_accumulated_data(data, rng); |
| 174 | +}; |
| 175 | + |
| 176 | +} // namespace bb::avm2::fuzzer |
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