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| 1 | +use crate::core::errors::contract_address_errors::ContractAddressError; |
| 2 | +use crate::services::api::contract_classes::deprecated_contract_class::EntryPointType; |
| 3 | +use cairo_lang_starknet::casm_contract_class::{CasmContractClass, CasmContractEntryPoint}; |
| 4 | +use cairo_vm::felt::Felt252; |
| 5 | +use starknet_crypto::{poseidon_hash_many, FieldElement}; |
| 6 | + |
| 7 | +const CONTRACT_CLASS_VERSION: &[u8] = b"COMPILED_CLASS_V1"; |
| 8 | + |
| 9 | +fn get_contract_entry_points_hashed( |
| 10 | + contract_class: &CasmContractClass, |
| 11 | + entry_point_type: &EntryPointType, |
| 12 | +) -> Result<FieldElement, ContractAddressError> { |
| 13 | + let contract_entry_points = get_contract_entry_points(contract_class, entry_point_type); |
| 14 | + |
| 15 | + // for each entry_point, we need to store 3 FieldElements: [selector, offset, poseidon_hash_many(builtin_list)]. |
| 16 | + let mut entry_points_flatted = Vec::with_capacity(contract_entry_points.len() * 3); |
| 17 | + |
| 18 | + for entry_point in contract_entry_points { |
| 19 | + entry_points_flatted.push( |
| 20 | + // fix this conversion later |
| 21 | + FieldElement::from_bytes_be(&Felt252::from(entry_point.selector).to_be_bytes()) |
| 22 | + .map_err(|_err| { |
| 23 | + ContractAddressError::Cast("Felt252".to_string(), "FieldElement".to_string()) |
| 24 | + })?, |
| 25 | + ); |
| 26 | + entry_points_flatted.push(FieldElement::from(entry_point.offset)); |
| 27 | + let builtins_flatted = entry_point |
| 28 | + .builtins |
| 29 | + .iter() |
| 30 | + .map(|builtin| FieldElement::from_byte_slice_be(builtin.as_bytes())) |
| 31 | + .collect::<Result<Vec<FieldElement>, _>>() |
| 32 | + .map_err(|_err| { |
| 33 | + ContractAddressError::Cast("Felt252".to_string(), "FieldElement".to_string()) |
| 34 | + })?; |
| 35 | + entry_points_flatted.push(poseidon_hash_many(&builtins_flatted)); |
| 36 | + } |
| 37 | + |
| 38 | + Ok(poseidon_hash_many(&entry_points_flatted)) |
| 39 | +} |
| 40 | + |
| 41 | +pub fn compute_casm_class_hash( |
| 42 | + contract_class: &CasmContractClass, |
| 43 | +) -> Result<Felt252, ContractAddressError> { |
| 44 | + let api_version = |
| 45 | + FieldElement::from_bytes_be(&Felt252::from_bytes_be(CONTRACT_CLASS_VERSION).to_be_bytes()) |
| 46 | + .map_err(|_err| { |
| 47 | + ContractAddressError::Cast("Felt252".to_string(), "FieldElement".to_string()) |
| 48 | + })?; |
| 49 | + |
| 50 | + // Entrypoints by type, hashed. |
| 51 | + let external_functions = |
| 52 | + get_contract_entry_points_hashed(contract_class, &EntryPointType::External)?; |
| 53 | + let l1_handlers = get_contract_entry_points_hashed(contract_class, &EntryPointType::L1Handler)?; |
| 54 | + let constructors = |
| 55 | + get_contract_entry_points_hashed(contract_class, &EntryPointType::Constructor)?; |
| 56 | + |
| 57 | + let mut casm_program_vector = Vec::with_capacity(contract_class.bytecode.len()); |
| 58 | + for number in &contract_class.bytecode { |
| 59 | + casm_program_vector.push( |
| 60 | + FieldElement::from_bytes_be(&Felt252::from(number.value.clone()).to_be_bytes()) |
| 61 | + .map_err(|_err| { |
| 62 | + ContractAddressError::Cast("Felt252".to_string(), "FieldElement".to_string()) |
| 63 | + })?, |
| 64 | + ); |
| 65 | + } |
| 66 | + |
| 67 | + // Hash casm program. |
| 68 | + let casm_program_ptr = poseidon_hash_many(&casm_program_vector); |
| 69 | + |
| 70 | + let flatted_contract_class = vec![ |
| 71 | + api_version, |
| 72 | + external_functions, |
| 73 | + l1_handlers, |
| 74 | + constructors, |
| 75 | + casm_program_ptr, |
| 76 | + ]; |
| 77 | + |
| 78 | + Ok(Felt252::from_bytes_be( |
| 79 | + &poseidon_hash_many(&flatted_contract_class).to_bytes_be(), |
| 80 | + )) |
| 81 | +} |
| 82 | + |
| 83 | +fn get_contract_entry_points( |
| 84 | + contract_class: &CasmContractClass, |
| 85 | + entry_point_type: &EntryPointType, |
| 86 | +) -> Vec<CasmContractEntryPoint> { |
| 87 | + match entry_point_type { |
| 88 | + EntryPointType::Constructor => contract_class.entry_points_by_type.constructor.clone(), |
| 89 | + EntryPointType::External => contract_class.entry_points_by_type.external.clone(), |
| 90 | + EntryPointType::L1Handler => contract_class.entry_points_by_type.l1_handler.clone(), |
| 91 | + } |
| 92 | +} |
| 93 | + |
| 94 | +#[cfg(test)] |
| 95 | +mod tests { |
| 96 | + /// THE VALUES IN THIS TESTS WERE TAKEN FROM THE CONTRACTS IN THE STARKNET_PROGRAMS FOLDER. |
| 97 | + /// AND WE USE A [TOOL FOUND IN CAIRO-LANG](https://github.com/starkware-libs/cairo-lang/blob/master/src/starkware/starknet/cli/compiled_class_hash.py) |
| 98 | + /// TO GET THE RIGHT HASH VALUE. |
| 99 | + use std::{fs::File, io::BufReader}; |
| 100 | + |
| 101 | + use super::*; |
| 102 | + use cairo_vm::felt::felt_str; |
| 103 | + use coverage_helper::test; |
| 104 | + |
| 105 | + #[test] |
| 106 | + fn test_compute_casm_class_hash_contract_a() { |
| 107 | + // Open the file in read-only mode with buffer. |
| 108 | + let file; |
| 109 | + let expected_result; |
| 110 | + #[cfg(not(feature = "cairo_1_tests"))] |
| 111 | + { |
| 112 | + file = File::open("starknet_programs/cairo2/contract_a.casm").unwrap(); |
| 113 | + expected_result = felt_str!( |
| 114 | + "321aadcf42b0a4ad905616598d16c42fa9b87c812dc398e49b57bf77930629f", |
| 115 | + 16 |
| 116 | + ); |
| 117 | + } |
| 118 | + #[cfg(feature = "cairo_1_tests")] |
| 119 | + { |
| 120 | + file = File::open("starknet_programs/cairo1/contract_a.casm").unwrap(); |
| 121 | + expected_result = felt_str!( |
| 122 | + "3a4f00bf75ba3b9230a94f104c7a4605a1901c4bd475beb59eeeeb7aceb9795", |
| 123 | + 16 |
| 124 | + ); |
| 125 | + } |
| 126 | + let reader = BufReader::new(file); |
| 127 | + |
| 128 | + // Read the JSON contents of the file as an instance of `CasmContractClass`. |
| 129 | + let contract_class: CasmContractClass = serde_json::from_reader(reader).unwrap(); |
| 130 | + |
| 131 | + assert_eq!( |
| 132 | + compute_casm_class_hash(&contract_class).unwrap(), |
| 133 | + expected_result |
| 134 | + ); |
| 135 | + } |
| 136 | + |
| 137 | + #[test] |
| 138 | + fn test_compute_casm_class_hash_deploy() { |
| 139 | + // Open the file in read-only mode with buffer. |
| 140 | + let file; |
| 141 | + let expected_result; |
| 142 | + #[cfg(not(feature = "cairo_1_tests"))] |
| 143 | + { |
| 144 | + file = File::open("starknet_programs/cairo2/deploy.casm").unwrap(); |
| 145 | + expected_result = felt_str!( |
| 146 | + "53ad3bfb13f39cf1a9940108be4f9c6a8d9cc48a59d5f9b3c73432f877f8cf0", |
| 147 | + 16 |
| 148 | + ); |
| 149 | + } |
| 150 | + |
| 151 | + #[cfg(feature = "cairo_1_tests")] |
| 152 | + { |
| 153 | + file = File::open("starknet_programs/cairo1/deploy.casm").unwrap(); |
| 154 | + expected_result = felt_str!( |
| 155 | + "3bd56f1c3c1c595ac2ee6d07bdedc027d09df56235e20374649f0b3535c1f15", |
| 156 | + 16 |
| 157 | + ); |
| 158 | + } |
| 159 | + let reader = BufReader::new(file); |
| 160 | + |
| 161 | + // Read the JSON contents of the file as an instance of `CasmContractClass`. |
| 162 | + let contract_class: CasmContractClass = serde_json::from_reader(reader).unwrap(); |
| 163 | + |
| 164 | + assert_eq!( |
| 165 | + compute_casm_class_hash(&contract_class).unwrap(), |
| 166 | + expected_result |
| 167 | + ); |
| 168 | + } |
| 169 | + |
| 170 | + #[test] |
| 171 | + fn test_compute_casm_class_hash_fibonacci() { |
| 172 | + // Open the file in read-only mode with buffer. |
| 173 | + let file; |
| 174 | + let expected_result; |
| 175 | + #[cfg(not(feature = "cairo_1_tests"))] |
| 176 | + { |
| 177 | + file = File::open("starknet_programs/cairo2/fibonacci.casm").unwrap(); |
| 178 | + expected_result = felt_str!( |
| 179 | + "6638ce6c9bf336d1781a388668fa2206d928df5d1fa6b92e4cb41004c7e3f89", |
| 180 | + 16 |
| 181 | + ); |
| 182 | + } |
| 183 | + |
| 184 | + #[cfg(feature = "cairo_1_tests")] |
| 185 | + { |
| 186 | + file = File::open("starknet_programs/cairo1/fibonacci.casm").unwrap(); |
| 187 | + expected_result = felt_str!( |
| 188 | + "44f12e6e59232e9909d7428b913b3cc8d9059458e5027740a3ccdbdc4b1ffd2", |
| 189 | + 16 |
| 190 | + ); |
| 191 | + } |
| 192 | + let reader = BufReader::new(file); |
| 193 | + |
| 194 | + // Read the JSON contents of the file as an instance of `CasmContractClass`. |
| 195 | + let contract_class: CasmContractClass = serde_json::from_reader(reader).unwrap(); |
| 196 | + |
| 197 | + assert_eq!( |
| 198 | + compute_casm_class_hash(&contract_class).unwrap(), |
| 199 | + expected_result |
| 200 | + ); |
| 201 | + } |
| 202 | + |
| 203 | + #[test] |
| 204 | + fn test_compute_casm_class_hash_factorial() { |
| 205 | + // Open the file in read-only mode with buffer. |
| 206 | + let file; |
| 207 | + let expected_result; |
| 208 | + #[cfg(not(feature = "cairo_1_tests"))] |
| 209 | + { |
| 210 | + file = File::open("starknet_programs/cairo2/factorial.casm").unwrap(); |
| 211 | + expected_result = felt_str!( |
| 212 | + "7c48d040ceb3183837a0aff2adf33d879f790e202eb2c4b8622005c12252641", |
| 213 | + 16 |
| 214 | + ); |
| 215 | + } |
| 216 | + |
| 217 | + #[cfg(feature = "cairo_1_tests")] |
| 218 | + { |
| 219 | + file = File::open("starknet_programs/cairo1/factorial.casm").unwrap(); |
| 220 | + expected_result = felt_str!( |
| 221 | + "189a9b8b852aedbb225aa28dce9cfc3133145dd623e2d2ca5e962b7d4e61e15", |
| 222 | + 16 |
| 223 | + ); |
| 224 | + } |
| 225 | + let reader = BufReader::new(file); |
| 226 | + |
| 227 | + // Read the JSON contents of the file as an instance of `CasmContractClass`. |
| 228 | + let contract_class: CasmContractClass = serde_json::from_reader(reader).unwrap(); |
| 229 | + |
| 230 | + assert_eq!( |
| 231 | + compute_casm_class_hash(&contract_class).unwrap(), |
| 232 | + expected_result |
| 233 | + ); |
| 234 | + } |
| 235 | + |
| 236 | + #[test] |
| 237 | + fn test_compute_casm_class_hash_emit_event() { |
| 238 | + // Open the file in read-only mode with buffer. |
| 239 | + let file; |
| 240 | + let expected_result; |
| 241 | + #[cfg(not(feature = "cairo_1_tests"))] |
| 242 | + { |
| 243 | + file = File::open("starknet_programs/cairo2/emit_event.casm").unwrap(); |
| 244 | + expected_result = felt_str!( |
| 245 | + "3010533bd60cb0e70ac1bf776e171713f0e5229a084989d3894c171c160ace2", |
| 246 | + 16 |
| 247 | + ); |
| 248 | + } |
| 249 | + |
| 250 | + #[cfg(feature = "cairo_1_tests")] |
| 251 | + { |
| 252 | + file = File::open("starknet_programs/cairo1/emit_event.casm").unwrap(); |
| 253 | + expected_result = felt_str!( |
| 254 | + "3335fe731ceda1116eda8bbc2e282953ce54618309ad474189e627c59328fff", |
| 255 | + 16 |
| 256 | + ); |
| 257 | + } |
| 258 | + let reader = BufReader::new(file); |
| 259 | + |
| 260 | + // Read the JSON contents of the file as an instance of `CasmContractClass`. |
| 261 | + let contract_class: CasmContractClass = serde_json::from_reader(reader).unwrap(); |
| 262 | + |
| 263 | + assert_eq!( |
| 264 | + compute_casm_class_hash(&contract_class).unwrap(), |
| 265 | + expected_result |
| 266 | + ); |
| 267 | + } |
| 268 | +} |
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