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solidity/test/libsolidity/ABIDecoderTests.cpp

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/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Unit tests for Solidity's ABI decoder.
*/
#include <functional>
#include <string>
#include <tuple>
#include <boost/test/unit_test.hpp>
#include <liblangutil/Exceptions.h>
#include <test/libsolidity/SolidityExecutionFramework.h>
#include <test/libsolidity/ABITestsCommon.h>
using namespace std;
using namespace std::placeholders;
using namespace dev::test;
namespace dev
{
namespace solidity
{
namespace test
{
BOOST_FIXTURE_TEST_SUITE(ABIDecoderTest, SolidityExecutionFramework)
BOOST_AUTO_TEST_CASE(both_encoders_macro)
{
// This tests that the "both decoders macro" at least runs twice and
// modifies the source.
string sourceCode;
int runs = 0;
BOTH_ENCODERS(runs++;)
BOOST_CHECK(sourceCode == NewEncoderPragma);
BOOST_CHECK_EQUAL(runs, 2);
}
BOOST_AUTO_TEST_CASE(value_types)
{
string sourceCode = R"(
contract C {
function f(uint a, uint16 b, uint24 c, int24 d, bytes3 x, bool e, C g) public returns (uint) {
if (a != 1) return 1;
if (b != 2) return 2;
if (c != 3) return 3;
if (d != 4) return 4;
if (x != "abc") return 5;
if (e != true) return 6;
if (g != this) return 7;
return 20;
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode);
ABI_CHECK(callContractFunction(
"f(uint256,uint16,uint24,int24,bytes3,bool,address)",
1, 2, 3, 4, string("abc"), true, u160(m_contractAddress)
), encodeArgs(u256(20)));
)
}
BOOST_AUTO_TEST_CASE(enums)
{
string sourceCode = R"(
contract C {
enum E { A, B }
function f(E e) public pure returns (uint x) {
assembly { x := e }
}
}
)";
bool newDecoder = dev::test::Options::get().useABIEncoderV2;
BOTH_ENCODERS(
compileAndRun(sourceCode);
ABI_CHECK(callContractFunction("f(uint8)", 0), encodeArgs(u256(0)));
ABI_CHECK(callContractFunction("f(uint8)", 1), encodeArgs(u256(1)));
// The old decoder was not as strict about enums
ABI_CHECK(callContractFunction("f(uint8)", 2), (newDecoder ? encodeArgs() : encodeArgs(2)));
ABI_CHECK(callContractFunction("f(uint8)", u256(-1)), (newDecoder? encodeArgs() : encodeArgs(u256(0xff))));
newDecoder = true;
)
}
BOOST_AUTO_TEST_CASE(cleanup)
{
string sourceCode = R"(
contract C {
function f(uint16 a, int16 b, address c, bytes3 d, bool e)
public pure returns (uint v, uint w, uint x, uint y, uint z) {
assembly { v := a w := b x := c y := d z := e}
}
}
)";
bool newDecoder = dev::test::Options::get().useABIEncoderV2;
BOTH_ENCODERS(
compileAndRun(sourceCode);
ABI_CHECK(
callContractFunction("f(uint16,int16,address,bytes3,bool)", 1, 2, 3, "a", true),
encodeArgs(u256(1), u256(2), u256(3), string("a"), true)
);
ABI_CHECK(
callContractFunction(
"f(uint16,int16,address,bytes3,bool)",
u256(0xffffff), u256(0x1ffff), u256(-1), string("abcd"), u256(1)
),
newDecoder ? bytes{} : encodeArgs(u256(0xffff), u256(-1), (u256(1) << 160) - 1, string("abc"), true)
);
ABI_CHECK(
callContractFunction(
"f(uint16,int16,address,bytes3,bool)",
u256(0xffffff), u256(0), u256(0), string("bcd"), u256(1)
),
newDecoder ? bytes{} : encodeArgs(u256(0xffff), u256(0), 0, string("bcd"), true)
);
ABI_CHECK(
callContractFunction(
"f(uint16,int16,address,bytes3,bool)",
u256(0), u256(0x1ffff), u256(0), string("ab"), u256(1)
),
newDecoder ? bytes{} : encodeArgs(u256(0), u256(-1), 0, string("ab"), true)
);
ABI_CHECK(
callContractFunction(
"f(uint16,int16,address,bytes3,bool)",
u256(0), u256(0), u256(-1), string("ad"), u256(1)
),
newDecoder ? bytes{} : encodeArgs(u256(0), u256(0), (u256(1) << 160) - 1, string("ad"), true)
);
ABI_CHECK(
callContractFunction(
"f(uint16,int16,address,bytes3,bool)",
u256(0), u256(0), u256(0), string("abcd"), u256(1)
),
newDecoder ? bytes{} : encodeArgs(u256(0), u256(0), 0, string("abc"), true)
);
ABI_CHECK(
callContractFunction(
"f(uint16,int16,address,bytes3,bool)",
u256(0), u256(0), u256(0), string("abc"), u256(2)
),
newDecoder ? bytes{} : encodeArgs(u256(0), u256(0), 0, string("abc"), true)
);
newDecoder = true;
)
}
BOOST_AUTO_TEST_CASE(fixed_arrays)
{
string sourceCode = R"(
contract C {
function f(uint16[3] memory a, uint16[2][3] memory b, uint i, uint j, uint k)
public pure returns (uint, uint) {
return (a[i], b[j][k]);
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode);
bytes args = encodeArgs(
1, 2, 3,
11, 12,
21, 22,
31, 32,
1, 2, 1
);
ABI_CHECK(
callContractFunction("f(uint16[3],uint16[2][3],uint256,uint256,uint256)", args),
encodeArgs(u256(2), u256(32))
);
)
}
BOOST_AUTO_TEST_CASE(dynamic_arrays)
{
string sourceCode = R"(
contract C {
function f(uint a, uint16[] memory b, uint c)
public pure returns (uint, uint, uint) {
return (b.length, b[a], c);
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode);
bytes args = encodeArgs(
6, 0x60, 9,
7,
11, 12, 13, 14, 15, 16, 17
);
ABI_CHECK(
callContractFunction("f(uint256,uint16[],uint256)", args),
encodeArgs(u256(7), u256(17), u256(9))
);
)
}
BOOST_AUTO_TEST_CASE(dynamic_nested_arrays)
{
string sourceCode = R"(
contract C {
function f(uint a, uint16[][] memory b, uint[2][][3] memory c, uint d)
public pure returns (uint, uint, uint, uint, uint, uint, uint) {
return (a, b.length, b[1].length, b[1][1], c[1].length, c[1][1][1], d);
}
function test() public view returns (uint, uint, uint, uint, uint, uint, uint) {
uint16[][] memory b = new uint16[][](3);
b[0] = new uint16[](2);
b[0][0] = 0x55;
b[0][1] = 0x56;
b[1] = new uint16[](4);
b[1][0] = 0x65;
b[1][1] = 0x66;
b[1][2] = 0x67;
b[1][3] = 0x68;
uint[2][][3] memory c;
c[0] = new uint[2][](1);
c[0][0][1] = 0x75;
c[1] = new uint[2][](5);
c[1][1][1] = 0x85;
return this.f(0x12, b, c, 0x13);
}
}
)";
NEW_ENCODER(
compileAndRun(sourceCode);
bytes args = encodeArgs(
0x12, 4 * 0x20, 17 * 0x20, 0x13,
// b
3, 3 * 0x20, 6 * 0x20, 11 * 0x20,
2, 85, 86,
4, 101, 102, 103, 104,
0,
// c
3 * 0x20, 6 * 0x20, 17 * 0x20,
1, 0, 117,
5, 0, 0, 0, 133, 0, 0, 0, 0, 0, 0,
0
);
bytes expectation = encodeArgs(0x12, 3, 4, 0x66, 5, 0x85, 0x13);
ABI_CHECK(callContractFunction("test()"), expectation);
ABI_CHECK(callContractFunction("f(uint256,uint16[][],uint256[2][][3],uint256)", args), expectation);
)
}
BOOST_AUTO_TEST_CASE(byte_arrays)
{
string sourceCode = R"(
contract C {
function f(uint a, bytes memory b, uint c)
public pure returns (uint, uint, byte, uint) {
return (a, b.length, b[3], c);
}
function f_external(uint a, bytes calldata b, uint c)
external pure returns (uint, uint, byte, uint) {
return (a, b.length, b[3], c);
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode);
bytes args = encodeArgs(
6, 0x60, 9,
7, "abcdefg"
);
ABI_CHECK(
callContractFunction("f(uint256,bytes,uint256)", args),
encodeArgs(u256(6), u256(7), "d", 9)
);
ABI_CHECK(
callContractFunction("f_external(uint256,bytes,uint256)", args),
encodeArgs(u256(6), u256(7), "d", 9)
);
)
}
BOOST_AUTO_TEST_CASE(calldata_arrays_too_large)
{
string sourceCode = R"(
contract C {
function f(uint a, uint[] calldata b, uint c) external pure returns (uint) {
return 7;
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode);
bytes args = encodeArgs(
6, 0x60, 9,
(u256(1) << 255) + 2, 1, 2
);
ABI_CHECK(
callContractFunction("f(uint256,uint256[],uint256)", args),
encodeArgs()
);
)
}
BOOST_AUTO_TEST_CASE(decode_from_memory_simple)
{
string sourceCode = R"(
contract C {
uint public _a;
uint[] public _b;
constructor(uint a, uint[] memory b) public {
_a = a;
_b = b;
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode, 0, "C", encodeArgs(
7, 0x40,
// b
3, 0x21, 0x22, 0x23
));
ABI_CHECK(callContractFunction("_a()"), encodeArgs(7));
ABI_CHECK(callContractFunction("_b(uint256)", 0), encodeArgs(0x21));
ABI_CHECK(callContractFunction("_b(uint256)", 1), encodeArgs(0x22));
ABI_CHECK(callContractFunction("_b(uint256)", 2), encodeArgs(0x23));
ABI_CHECK(callContractFunction("_b(uint256)", 3), encodeArgs());
)
}
BOOST_AUTO_TEST_CASE(decode_function_type)
{
string sourceCode = R"(
contract D {
function () external returns (uint) public _a;
constructor(function () external returns (uint) a) public {
_a = a;
}
}
contract C {
function f() public returns (uint) {
return 3;
}
function g(function () external returns (uint) _f) public returns (uint) {
return _f();
}
// uses "decode from memory"
function test1() public returns (uint) {
D d = new D(this.f);
return d._a()();
}
// uses "decode from calldata"
function test2() public returns (uint) {
return this.g(this.f);
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode, 0, "C");
ABI_CHECK(callContractFunction("test1()"), encodeArgs(3));
ABI_CHECK(callContractFunction("test2()"), encodeArgs(3));
)
}
BOOST_AUTO_TEST_CASE(decode_function_type_array)
{
string sourceCode = R"(
contract D {
function () external returns (uint)[] public _a;
constructor(function () external returns (uint)[] memory a) public {
_a = a;
}
}
contract E {
function () external returns (uint)[3] public _a;
constructor(function () external returns (uint)[3] memory a) public {
_a = a;
}
}
contract C {
function f1() public returns (uint) {
return 1;
}
function f2() public returns (uint) {
return 2;
}
function f3() public returns (uint) {
return 3;
}
function g(function () external returns (uint)[] memory _f, uint i) public returns (uint) {
return _f[i]();
}
function h(function () external returns (uint)[3] memory _f, uint i) public returns (uint) {
return _f[i]();
}
// uses "decode from memory"
function test1_dynamic() public returns (uint) {
function () external returns (uint)[] memory x = new function() external returns (uint)[](4);
x[0] = this.f1;
x[1] = this.f2;
x[2] = this.f3;
D d = new D(x);
return d._a(2)();
}
function test1_static() public returns (uint) {
E e = new E([this.f1, this.f2, this.f3]);
return e._a(2)();
}
// uses "decode from calldata"
function test2_dynamic() public returns (uint) {
function () external returns (uint)[] memory x = new function() external returns (uint)[](3);
x[0] = this.f1;
x[1] = this.f2;
x[2] = this.f3;
return this.g(x, 0);
}
function test2_static() public returns (uint) {
return this.h([this.f1, this.f2, this.f3], 0);
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode, 0, "C");
ABI_CHECK(callContractFunction("test1_static()"), encodeArgs(3));
ABI_CHECK(callContractFunction("test1_dynamic()"), encodeArgs(3));
ABI_CHECK(callContractFunction("test2_static()"), encodeArgs(1));
ABI_CHECK(callContractFunction("test2_dynamic()"), encodeArgs(1));
)
}
BOOST_AUTO_TEST_CASE(decode_from_memory_complex)
{
string sourceCode = R"(
contract C {
uint public _a;
uint[] public _b;
bytes[2] public _c;
constructor(uint a, uint[] memory b, bytes[2] memory c) public {
_a = a;
_b = b;
_c = c;
}
}
)";
NEW_ENCODER(
compileAndRun(sourceCode, 0, "C", encodeArgs(
7, 0x60, 7 * 0x20,
// b
3, 0x21, 0x22, 0x23,
// c
0x40, 0x80,
8, string("abcdefgh"),
52, string("ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ")
));
ABI_CHECK(callContractFunction("_a()"), encodeArgs(7));
ABI_CHECK(callContractFunction("_b(uint256)", 0), encodeArgs(0x21));
ABI_CHECK(callContractFunction("_b(uint256)", 1), encodeArgs(0x22));
ABI_CHECK(callContractFunction("_b(uint256)", 2), encodeArgs(0x23));
ABI_CHECK(callContractFunction("_b(uint256)", 3), encodeArgs());
ABI_CHECK(callContractFunction("_c(uint256)", 0), encodeArgs(0x20, 8, string("abcdefgh")));
ABI_CHECK(callContractFunction("_c(uint256)", 1), encodeArgs(0x20, 52, string("ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ")));
ABI_CHECK(callContractFunction("_c(uint256)", 2), encodeArgs());
)
}
BOOST_AUTO_TEST_CASE(short_input_value_type)
{
string sourceCode = R"(
contract C {
function f(uint a, uint b) public pure returns (uint) { return a; }
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode);
ABI_CHECK(callContractFunction("f(uint256,uint256)", 1, 2), encodeArgs(1));
ABI_CHECK(callContractFunctionNoEncoding("f(uint256,uint256)", bytes(64, 0)), encodeArgs(0));
ABI_CHECK(callContractFunctionNoEncoding("f(uint256,uint256)", bytes(63, 0)), encodeArgs());
)
}
BOOST_AUTO_TEST_CASE(short_input_array)
{
string sourceCode = R"(
contract C {
function f(uint[] memory a) public pure returns (uint) { return 7; }
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode);
ABI_CHECK(callContractFunctionNoEncoding("f(uint256[])", encodeArgs(0x20, 0)), encodeArgs(7));
ABI_CHECK(callContractFunctionNoEncoding("f(uint256[])", encodeArgs(0x20, 1)), encodeArgs());
ABI_CHECK(callContractFunctionNoEncoding("f(uint256[])", encodeArgs(0x20, 1) + bytes(31, 0)), encodeArgs());
ABI_CHECK(callContractFunctionNoEncoding("f(uint256[])", encodeArgs(0x20, 1) + bytes(32, 0)), encodeArgs(7));
ABI_CHECK(callContractFunctionNoEncoding("f(uint256[])", encodeArgs(0x20, 2, 5, 6)), encodeArgs(7));
)
}
BOOST_AUTO_TEST_CASE(short_dynamic_input_array)
{
string sourceCode = R"(
contract C {
function f(bytes[1] memory a) public pure returns (uint) { return 7; }
}
)";
NEW_ENCODER(
compileAndRun(sourceCode);
ABI_CHECK(callContractFunctionNoEncoding("f(bytes[1])", encodeArgs(0x20)), encodeArgs());
)
}
BOOST_AUTO_TEST_CASE(short_input_bytes)
{
string sourceCode = R"(
contract C {
function e(bytes memory a) public pure returns (uint) { return 7; }
function f(bytes[] memory a) public pure returns (uint) { return 7; }
}
)";
NEW_ENCODER(
compileAndRun(sourceCode);
ABI_CHECK(callContractFunctionNoEncoding("e(bytes)", encodeArgs(0x20, 7) + bytes(5, 0)), encodeArgs());
ABI_CHECK(callContractFunctionNoEncoding("e(bytes)", encodeArgs(0x20, 7) + bytes(6, 0)), encodeArgs());
ABI_CHECK(callContractFunctionNoEncoding("e(bytes)", encodeArgs(0x20, 7) + bytes(7, 0)), encodeArgs(7));
ABI_CHECK(callContractFunctionNoEncoding("e(bytes)", encodeArgs(0x20, 7) + bytes(8, 0)), encodeArgs(7));
ABI_CHECK(callContractFunctionNoEncoding("f(bytes[])", encodeArgs(0x20, 1, 0x20, 7) + bytes(5, 0)), encodeArgs());
ABI_CHECK(callContractFunctionNoEncoding("f(bytes[])", encodeArgs(0x20, 1, 0x20, 7) + bytes(6, 0)), encodeArgs());
ABI_CHECK(callContractFunctionNoEncoding("f(bytes[])", encodeArgs(0x20, 1, 0x20, 7) + bytes(7, 0)), encodeArgs(7));
ABI_CHECK(callContractFunctionNoEncoding("f(bytes[])", encodeArgs(0x20, 1, 0x20, 7) + bytes(8, 0)), encodeArgs(7));
)
}
BOOST_AUTO_TEST_CASE(validation_int_inside_arrays)
{
string sourceCode = R"(
contract C {
enum E { A, B }
function f(uint16[] memory a) public pure returns (uint r) { assembly { r := mload(add(a, 0x20)) } }
function g(int16[] memory a) public pure returns (uint r) { assembly { r := mload(add(a, 0x20)) } }
function h(E[] memory a) public pure returns (uint r) { assembly { r := mload(add(a, 0x20)) } }
}
)";
NEW_ENCODER(
compileAndRun(sourceCode);
ABI_CHECK(callContractFunction("f(uint16[])", 0x20, 1, 7), encodeArgs(7));
ABI_CHECK(callContractFunction("g(int16[])", 0x20, 1, 7), encodeArgs(7));
ABI_CHECK(callContractFunction("f(uint16[])", 0x20, 1, u256("0xffff")), encodeArgs(u256("0xffff")));
ABI_CHECK(callContractFunction("g(int16[])", 0x20, 1, u256("0xffff")), encodeArgs());
ABI_CHECK(callContractFunction("f(uint16[])", 0x20, 1, u256("0x1ffff")), encodeArgs());
ABI_CHECK(callContractFunction("g(int16[])", 0x20, 1, u256("0x10fff")), encodeArgs());
ABI_CHECK(callContractFunction("h(uint8[])", 0x20, 1, 0), encodeArgs(u256(0)));
ABI_CHECK(callContractFunction("h(uint8[])", 0x20, 1, 1), encodeArgs(u256(1)));
ABI_CHECK(callContractFunction("h(uint8[])", 0x20, 1, 2), encodeArgs());
)
}
BOOST_AUTO_TEST_CASE(validation_function_type)
{
string sourceCode = R"(
contract C {
function f(function () external) public pure returns (uint r) { r = 1; }
function g(function () external[] memory) public pure returns (uint r) { r = 2; }
function h(function () external[] calldata) external pure returns (uint r) { r = 3; }
function i(function () external[] calldata a) external pure returns (uint r) { a[0]; r = 4; }
}
)";
bool newDecoder = dev::test::Options::get().useABIEncoderV2;
string validFun{"01234567890123456789abcd"};
string invalidFun{"01234567890123456789abcdX"};
BOTH_ENCODERS(
compileAndRun(sourceCode);
ABI_CHECK(callContractFunction("f(function)", validFun), encodeArgs(1));
ABI_CHECK(callContractFunction("f(function)", invalidFun), newDecoder ? bytes{} : encodeArgs(1));
ABI_CHECK(callContractFunction("g(function[])", 0x20, 1, validFun), encodeArgs(2));
ABI_CHECK(callContractFunction("g(function[])", 0x20, 1, invalidFun), newDecoder ? bytes{} : encodeArgs(2));
ABI_CHECK(callContractFunction("h(function[])", 0x20, 1, validFun), encodeArgs(3));
// No failure because the data is not accessed.
ABI_CHECK(callContractFunction("h(function[])", 0x20, 1, invalidFun), encodeArgs(3));
ABI_CHECK(callContractFunction("i(function[])", 0x20, 1, validFun), encodeArgs(4));
ABI_CHECK(callContractFunction("i(function[])", 0x20, 1, invalidFun), newDecoder ? bytes{} : encodeArgs(4));
newDecoder = true;
)
}
BOOST_AUTO_TEST_CASE(validation_function_type_inside_struct)
{
string sourceCode = R"(
contract C {
struct S { function () external x; }
function f(S memory) public pure returns (uint r) { r = 1; }
function g(S calldata) external pure returns (uint r) { r = 2; }
function h(S calldata s) external pure returns (uint r) { s.x; r = 3; }
}
)";
string validFun{"01234567890123456789abcd"};
string invalidFun{"01234567890123456789abcdX"};
NEW_ENCODER(
compileAndRun(sourceCode);
ABI_CHECK(callContractFunction("f((function))", validFun), encodeArgs(1));
// Error because we copy to memory
ABI_CHECK(callContractFunction("f((function))", invalidFun), encodeArgs());
ABI_CHECK(callContractFunction("g((function))", validFun), encodeArgs(2));
// No error because x is not accessed.
ABI_CHECK(callContractFunction("g((function))", invalidFun), encodeArgs(2));
ABI_CHECK(callContractFunction("h((function))", validFun), encodeArgs(3));
// Error on access.
ABI_CHECK(callContractFunction("h((function))", invalidFun), encodeArgs());
)
}
BOOST_AUTO_TEST_CASE(storage_ptr)
{
string sourceCode = R"(
library L {
struct S { uint x; uint y; }
function f(uint[] storage r, S storage s) public returns (uint, uint, uint, uint) {
r[2] = 8;
s.x = 7;
return (r[0], r[1], s.x, s.y);
}
}
contract C {
uint8 x = 3;
L.S s;
uint[] r;
function f() public returns (uint, uint, uint, uint, uint, uint) {
r = new uint[](6);
r[0] = 1;
r[1] = 2;
r[2] = 3;
s.x = 11;
s.y = 12;
(uint a, uint b, uint c, uint d) = L.f(r, s);
return (r[2], s.x, a, b, c, d);
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode, 0, "L");
compileAndRun(sourceCode, 0, "C", bytes(), map<string, Address>{{"L", m_contractAddress}});
ABI_CHECK(callContractFunction("f()"), encodeArgs(8, 7, 1, 2, 7, 12));
)
}
BOOST_AUTO_TEST_CASE(struct_simple)
{
string sourceCode = R"(
contract C {
struct S { uint a; uint8 b; uint8 c; bytes2 d; }
function f(S memory s) public pure returns (uint a, uint b, uint c, uint d) {
a = s.a;
b = s.b;
c = s.c;
d = uint16(s.d);
}
}
)";
NEW_ENCODER(
compileAndRun(sourceCode, 0, "C");
ABI_CHECK(callContractFunction("f((uint256,uint8,uint8,bytes2))", 1, 2, 3, "ab"), encodeArgs(1, 2, 3, 'a' * 0x100 + 'b'));
)
}
BOOST_AUTO_TEST_CASE(struct_validation)
{
string sourceCode = R"(
contract C {
struct S { int16 a; uint8 b; bytes2 c; }
function f(S memory s) public pure returns (uint a, uint b, uint c) {
assembly {
a := mload(s)
b := mload(add(s, 0x20))
c := mload(add(s, 0x40))
}
}
}
)";
u256 largeNeg("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff01");
NEW_ENCODER(
compileAndRun(sourceCode, 0, "C");
ABI_CHECK(
callContractFunction("f((int16,uint8,bytes2))", largeNeg, 0xff, "ab"),
encodeArgs(largeNeg, 0xff, "ab")
);
ABI_CHECK(
callContractFunction("f((int16,uint8,bytes2))", 0xff010, 0xff, "ab"),
encodeArgs()
);
ABI_CHECK(
callContractFunction("f((int16,uint8,bytes2))", largeNeg, 0xff0002, "ab"),
encodeArgs()
);
ABI_CHECK(
callContractFunction("f((int16,uint8,bytes2))", largeNeg, 0xff, "abcd"),
encodeArgs()
);
)
}
BOOST_AUTO_TEST_CASE(struct_short)
{
string sourceCode = R"(
contract C {
struct S { int a; uint b; bytes16 c; }
function f(S memory s) public pure returns (S memory q) {
q = s;
}
}
)";
NEW_ENCODER(
compileAndRun(sourceCode, 0, "C");
ABI_CHECK(
callContractFunction("f((int256,uint256,bytes16))", 0xff010, 0xff0002, "abcd"),
encodeArgs(0xff010, 0xff0002, "abcd")
);
ABI_CHECK(
callContractFunctionNoEncoding("f((int256,uint256,bytes16))", encodeArgs(0xff010, 0xff0002) + bytes(32, 0)),
encodeArgs(0xff010, 0xff0002, 0)
);
ABI_CHECK(
callContractFunctionNoEncoding("f((int256,uint256,bytes16))", encodeArgs(0xff010, 0xff0002) + bytes(31, 0)),
encodeArgs()
);
)
}
BOOST_AUTO_TEST_CASE(struct_function)
{
string sourceCode = R"(
contract C {
struct S { function () external returns (uint) f; uint b; }
function f(S memory s) public returns (uint, uint) {
return (s.f(), s.b);
}
function test() public returns (uint, uint) {
return this.f(S(this.g, 3));
}
function g() public returns (uint) { return 7; }
}
)";
NEW_ENCODER(
compileAndRun(sourceCode, 0, "C");
ABI_CHECK(callContractFunction("test()"), encodeArgs(7, 3));
)
}
BOOST_AUTO_TEST_CASE(mediocre_struct)
{
string sourceCode = R"(
contract C {
struct S { C c; }
function f(uint a, S[2] memory s1, uint b) public returns (uint r1, C r2, uint r3) {
r1 = a;
r2 = s1[0].c;
r3 = b;
}
}
)";
NEW_ENCODER(
compileAndRun(sourceCode, 0, "C");
string sig = "f(uint256,(address)[2],uint256)";
ABI_CHECK(callContractFunction(sig,
7, u256(u160(m_contractAddress)), 0, 8
), encodeArgs(7, u256(u160(m_contractAddress)), 8));
)
}
BOOST_AUTO_TEST_CASE(mediocre2_struct)
{
string sourceCode = R"(
contract C {
struct S { C c; uint[] x; }
function f(uint a, S[2] memory s1, uint b) public returns (uint r1, C r2, uint r3) {
r1 = a;
r2 = s1[0].c;
r3 = b;
}
}
)";
NEW_ENCODER(
compileAndRun(sourceCode, 0, "C");
string sig = "f(uint256,(address,uint256[])[2],uint256)";
ABI_CHECK(callContractFunction(sig,
7, 0x60, 8,
0x40, 7 * 0x20,
u256(u160(m_contractAddress)), 0x40,
2, 0x11, 0x12,
0x99, 0x40,
4, 0x31, 0x32, 0x34, 0x35
), encodeArgs(7, u256(u160(m_contractAddress)), 8));
)
}
BOOST_AUTO_TEST_CASE(complex_struct)
{
string sourceCode = R"(
contract C {
enum E {A, B, C}
struct T { uint x; E e; uint8 y; }
struct S { C c; T[] t;}
function f(uint a, S[2] memory s1, S[] memory s2, uint b) public returns
(uint r1, C r2, uint r3, uint r4, C r5, uint r6, E r7, uint8 r8) {
r1 = a;
r2 = s1[0].c;
r3 = b;
r4 = s2.length;
r5 = s2[1].c;
r6 = s2[1].t.length;
r7 = s2[1].t[1].e;
r8 = s2[1].t[1].y;
}
}
)";
NEW_ENCODER(
compileAndRun(sourceCode, 0, "C");
string sig = "f(uint256,(address,(uint256,uint8,uint8)[])[2],(address,(uint256,uint8,uint8)[])[],uint256)";
bytes args = encodeArgs(
7, 0x80, 0x1e0, 8,
// S[2] s1
0x40,
0x100,
// S s1[0]
u256(u160(m_contractAddress)),
0x40,
// T s1[0].t
1, // length
// s1[0].t[0]
0x11, 1, 0x12,
// S s1[1]
0, 0x40,
// T s1[1].t
0,
// S[] s2 (0x1e0)
2, // length
0x40, 0xa0,
// S s2[0]
0, 0x40, 0,
// S s2[1]
0x1234, 0x40,
// s2[1].t
3, // length
0, 0, 0,
0x21, 2, 0x22,
0, 0, 0
);
ABI_CHECK(callContractFunction(sig, args), encodeArgs(7, u256(u160(m_contractAddress)), 8, 2, 0x1234, 3, 2, 0x22));
// invalid enum value
args.data()[0x20 * 28] = 3;
ABI_CHECK(callContractFunction(sig, args), encodeArgs());
)
}
BOOST_AUTO_TEST_CASE(return_dynamic_types_cross_call_simple)
{
if (m_evmVersion == langutil::EVMVersion::homestead())
return;
string sourceCode = R"(
contract C {
function dyn() public returns (bytes memory) {
return "1234567890123456789012345678901234567890";
}
function f() public returns (bytes memory) {
return this.dyn();
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode, 0, "C");
ABI_CHECK(callContractFunction("f()"), encodeArgs(0x20, 40, string("1234567890123456789012345678901234567890")));
)
}
BOOST_AUTO_TEST_CASE(return_dynamic_types_cross_call_advanced)
{
if (m_evmVersion == langutil::EVMVersion::homestead())
return;
string sourceCode = R"(
contract C {
function dyn() public returns (bytes memory a, uint b, bytes20[] memory c, uint d) {
a = "1234567890123456789012345678901234567890";
b = uint(-1);
c = new bytes20[](4);
c[0] = bytes20(uint160(1234));
c[3] = bytes20(uint160(6789));
d = 0x1234;
}
function f() public returns (bytes memory, uint, bytes20[] memory, uint) {
return this.dyn();
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode, 0, "C");
ABI_CHECK(callContractFunction("f()"), encodeArgs(
0x80, u256(-1), 0xe0, 0x1234,
40, string("1234567890123456789012345678901234567890"),
4, u256(1234) << (8 * (32 - 20)), 0, 0, u256(6789) << (8 * (32 - 20))
));
)
}
BOOST_AUTO_TEST_CASE(return_dynamic_types_cross_call_out_of_range)
{
string sourceCode = R"(
contract C {
function dyn(uint x) public returns (bytes memory a) {
assembly {
mstore(0, 0x20)
mstore(0x20, 0x21)
return(0, x)
}
}
function f(uint x) public returns (bool) {
this.dyn(x);
return true;
}
}
)";
BOTH_ENCODERS(
compileAndRun(sourceCode, 0, "C");
if (m_evmVersion == langutil::EVMVersion::homestead())
{
ABI_CHECK(callContractFunction("f(uint256)", 0x60), encodeArgs(true));
ABI_CHECK(callContractFunction("f(uint256)", 0x7f), encodeArgs(true));
}
else
{
ABI_CHECK(callContractFunction("f(uint256)", 0x60), encodeArgs());
ABI_CHECK(callContractFunction("f(uint256)", 0x61), encodeArgs(true));
}
ABI_CHECK(callContractFunction("f(uint256)", 0x80), encodeArgs(true));
)
}
BOOST_AUTO_TEST_CASE(out_of_bounds_bool_value)
{
string sourceCode = R"(
contract C {
function f(bool b) public pure returns (bool) { return b; }
}
)";
bool newDecoder = dev::test::Options::get().useABIEncoderV2;
BOTH_ENCODERS(
compileAndRun(sourceCode);
ABI_CHECK(callContractFunction("f(bool)", true), encodeArgs(true));
ABI_CHECK(callContractFunction("f(bool)", false), encodeArgs(false));
ABI_CHECK(callContractFunctionNoEncoding("f(bool)", bytes(32, 0)), encodeArgs(0));
ABI_CHECK(callContractFunctionNoEncoding("f(bool)", bytes(32, 0xff)), newDecoder ? encodeArgs() : encodeArgs(1));
newDecoder = true;
)
}
BOOST_AUTO_TEST_SUITE_END()
}
}
} // end namespaces
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