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Copy pathabi_dynamic_payload.fe
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147 lines (126 loc) · 4.22 KB
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use std::abi::{Bytes, DynString, bytes_from_words_prefix}
use std::evm::{Evm, RawMem, encode_abi_payload, mem}
msg DynamicPayloadMsg {
#[selector = 0x01]
Check { first: Bytes, marker: u256, second: Bytes } -> u256,
}
#[error]
pub struct DynamicPayloadError {
pub first: DynString,
pub marker: u256,
pub second: DynString,
}
pub contract DynamicPayloadReceiver {
recv DynamicPayloadMsg {
Check { first, marker, second } -> u256 {
assert!(marker == 0xabcdef)
assert!(first.len() == 33)
assert!(first.byte_at(0) == 0x11)
assert!(first.byte_at(31) == 0x11)
assert!(first.byte_at(32) == 0x22)
assert!(second.len() == 1)
assert!(second.byte_at(0) == 0x33)
first.len() + second.len()
}
}
}
fn two_word_bytes() -> Bytes
uses (evm: mut Evm)
{
let payload_len: u256 = 33
let payload_size: u256 = 96
let data_ptr = mem::alloc(payload_size)
evm.mstore(addr: data_ptr, value: payload_len)
evm.mstore(
addr: data_ptr + 32,
value: 0x1111111111111111111111111111111111111111111111111111111111111111,
)
evm.mstore(
addr: data_ptr + 64,
value: 0x2200000000000000000000000000000000000000000000000000000000000000,
)
Bytes { data: data_ptr, len: payload_len, size: payload_size }
}
fn one_byte_bytes() -> Bytes
uses (evm: mut Evm)
{
let payload_len: u256 = 1
let payload_size: u256 = 64
let data_ptr = mem::alloc(payload_size)
evm.mstore(addr: data_ptr, value: payload_len)
evm.mstore(
addr: data_ptr + 32,
value: 0x3300000000000000000000000000000000000000000000000000000000000000,
)
Bytes { data: data_ptr, len: payload_len, size: payload_size }
}
fn oversized_one_word_bytes() -> Bytes uses (mem: mut RawMem) {
let word: u256 = 0
bytes_from_words_prefix<33, 1>([word])
}
fn one_byte_two_word_prefix() -> Bytes uses (mem: mut RawMem) {
bytes_from_words_prefix<1, 2>([
0x3300000000000000000000000000000000000000000000000000000000000000,
0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff,
])
}
#[test]
fn test_abi_dynamic_payload_tuple_encoding() uses (evm: Evm) {
let payload: (u256, Bytes) = (0xdeadbeef, Bytes::empty())
let (ptr, len) = encode_abi_payload(payload)
assert!(len == 96)
assert!(evm.mload(ptr) == 0xdeadbeef)
assert!(evm.mload(ptr + 32) == 64)
assert!(evm.mload(ptr + 64) == 0)
}
#[test]
fn test_bytes_from_words_prefix_uses_canonical_tail_size() uses (evm: mut Evm, mem: mut RawMem) {
let payload: (Bytes, u256, Bytes) = (
one_byte_two_word_prefix(),
0xabcdef,
one_byte_bytes(),
)
let (ptr, len) = encode_abi_payload(payload)
assert!(len == 224)
assert!(evm.mload(ptr) == 96)
assert!(evm.mload(ptr + 32) == 0xabcdef)
assert!(evm.mload(ptr + 64) == 160)
assert!(evm.mload(ptr + 96) == 1)
assert!(evm.mload(ptr + 128) == 0x3300000000000000000000000000000000000000000000000000000000000000)
assert!(evm.mload(ptr + 160) == 1)
assert!(evm.mload(ptr + 192) == 0x3300000000000000000000000000000000000000000000000000000000000000)
}
#[test]
fn test_msg_dynamic_payload_tail_encoding() uses (evm: mut Evm) {
let receiver = evm.create2<DynamicPayloadReceiver>(value: 0, args: (), salt: 0)
assert!(receiver.inner != 0)
let result: u256 = evm.call(
addr: receiver,
gas: 1000000,
value: 0,
message: DynamicPayloadMsg::Check {
first: two_word_bytes(),
marker: 0xabcdef,
second: one_byte_bytes(),
},
)
assert!(result == 34)
}
#[test]
fn test_error_dynamic_payload_tail_encoding() uses (evm: mut Evm) {
let (ptr, len) = encode_abi_payload(DynamicPayloadError {
first: DynString::empty(),
marker: 0xabcdef,
second: DynString::empty(),
})
assert!(len == 160)
assert!(evm.mload(ptr) == 96)
assert!(evm.mload(ptr + 32) == 0xabcdef)
assert!(evm.mload(ptr + 64) == 128)
assert!(evm.mload(ptr + 96) == 0)
assert!(evm.mload(ptr + 128) == 0)
}
#[test(should_revert)]
fn test_bytes_from_words_prefix_rejects_oversize_len() uses (mem: mut RawMem) {
let _b = oversized_one_word_bytes()
}