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Packed Encoding: Disallow types in v2 that aren't allowed in v1

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This commit is contained in:
Mathias Baumann 2019-02-04 17:13:41 +00:00 committed by chriseth
parent 227addfcef
commit fe2429de9f
8 changed files with 52 additions and 31 deletions
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21
libsolidity/analysis/TypeChecker.cpp
View File

@ -48,9 +48,9 @@ using namespace dev::solidity;
namespace
{
bool typeSupportedByOldABIEncoder(Type const& _type)
bool typeSupportedByOldABIEncoder(Type const& _type, bool _isLibraryCall)
{
if (_type.dataStoredIn(DataLocation::Storage))
if (_isLibraryCall && _type.dataStoredIn(DataLocation::Storage))
return true;
if (_type.category() == Type::Category::Struct)
return false;
@ -58,7 +58,7 @@ bool typeSupportedByOldABIEncoder(Type const& _type)
{
auto const& arrayType = dynamic_cast<ArrayType const&>(_type);
auto base = arrayType.baseType();
if (!typeSupportedByOldABIEncoder(*base) || (base->category() == Type::Category::Array && base->isDynamicallySized()))
if (!typeSupportedByOldABIEncoder(*base, _isLibraryCall) || (base->category() == Type::Category::Array && base->isDynamicallySized()))
return false;
}
return true;
@ -355,7 +355,7 @@ bool TypeChecker::visit(FunctionDefinition const& _function)
if (
_function.isPublic() &&
!_function.sourceUnit().annotation().experimentalFeatures.count(ExperimentalFeature::ABIEncoderV2) &&
!typeSupportedByOldABIEncoder(*type(var))
!typeSupportedByOldABIEncoder(*type(var), isLibraryFunction)
)
m_errorReporter.typeError(
var.location(),
@ -475,7 +475,7 @@ bool TypeChecker::visit(VariableDeclaration const& _variable)
{
vector<string> unsupportedTypes;
for (auto const& param: getter.parameterTypes() + getter.returnParameterTypes())
if (!typeSupportedByOldABIEncoder(*param))
if (!typeSupportedByOldABIEncoder(*param, false /* isLibrary */))
unsupportedTypes.emplace_back(param->toString());
if (!unsupportedTypes.empty())
m_errorReporter.typeError(_variable.location(),
@ -585,7 +585,7 @@ bool TypeChecker::visit(EventDefinition const& _eventDef)
m_errorReporter.typeError(var->location(), "Internal or recursive type is not allowed as event parameter type.");
if (
!_eventDef.sourceUnit().annotation().experimentalFeatures.count(ExperimentalFeature::ABIEncoderV2) &&
!typeSupportedByOldABIEncoder(*type(*var))
!typeSupportedByOldABIEncoder(*type(*var), false /* isLibrary */)
)
m_errorReporter.typeError(
var->location(),
@ -1550,6 +1550,15 @@ void TypeChecker::typeCheckABIEncodeFunctions(
}
}
if (isPacked && !typeSupportedByOldABIEncoder(*argType, false /* isLibrary */))
{
m_errorReporter.typeError(
arguments[i]->location(),
"Type not supported in packed mode."
);
continue;
}
if (!argType->fullEncodingType(false, abiEncoderV2, !_functionType->padArguments()))
m_errorReporter.typeError(
arguments[i]->location(),

30
test/libsolidity/SolidityEndToEndTest.cpp
View File

@ -13715,25 +13715,22 @@ BOOST_AUTO_TEST_CASE(abi_encodePackedV2_structs)
s.d[0] = -7;
s.d[1] = -8;
}
function testStorage() public returns (bytes memory) {
function testStorage() public {
emit E(s);
return abi.encodePacked(uint8(0x33), s, uint8(0x44));
}
function testMemory() public returns (bytes memory) {
function testMemory() public {
S memory m = s;
emit E(m);
return abi.encodePacked(uint8(0x33), m, uint8(0x44));
}
}
)";
compileAndRun(sourceCode, 0, "C");
bytes structEnc = encodeArgs(int(0x12), u256(-7), int(2), int(3), u256(-7), u256(-8));
string encoding = "\x33" + asString(structEnc) + "\x44";
ABI_CHECK(callContractFunction("testStorage()"), encodeArgs(0x20, encoding.size(), encoding));
ABI_CHECK(callContractFunction("testStorage()"), encodeArgs());
BOOST_REQUIRE_EQUAL(m_logs[0].topics.size(), 2);
BOOST_CHECK_EQUAL(m_logs[0].topics[0], dev::keccak256(string("E((uint8,int16,uint8[2],int16[]))")));
BOOST_CHECK_EQUAL(m_logs[0].topics[1], dev::keccak256(asString(structEnc)));
ABI_CHECK(callContractFunction("testMemory()"), encodeArgs(0x20, encoding.size(), encoding));
ABI_CHECK(callContractFunction("testMemory()"), encodeArgs());
BOOST_REQUIRE_EQUAL(m_logs[0].topics.size(), 2);
BOOST_CHECK_EQUAL(m_logs[0].topics[0], dev::keccak256(string("E((uint8,int16,uint8[2],int16[]))")));
BOOST_CHECK_EQUAL(m_logs[0].topics[1], dev::keccak256(asString(structEnc)));
@ -13749,7 +13746,7 @@ BOOST_AUTO_TEST_CASE(abi_encodePackedV2_nestedArray)
int16 b;
}
event E(S[2][][3] indexed);
function testNestedArrays() public returns (bytes memory) {
function testNestedArrays() public {
S[2][][3] memory x;
x[1] = new S[2][](2);
x[1][0][0].a = 1;
@ -13757,14 +13754,12 @@ BOOST_AUTO_TEST_CASE(abi_encodePackedV2_nestedArray)
x[1][0][1].a = 3;
x[1][1][1].b = 4;
emit E(x);
return abi.encodePacked(uint8(0x33), x, uint8(0x44));
}
}
)";
compileAndRun(sourceCode, 0, "C");
bytes structEnc = encodeArgs(1, 2, 3, 0, 0, 0, 0, 4);
string encoding = "\x33" + asString(structEnc) + "\x44";
ABI_CHECK(callContractFunction("testNestedArrays()"), encodeArgs(0x20, encoding.size(), encoding));
ABI_CHECK(callContractFunction("testNestedArrays()"), encodeArgs());
BOOST_REQUIRE_EQUAL(m_logs[0].topics.size(), 2);
BOOST_CHECK_EQUAL(m_logs[0].topics[0], dev::keccak256(string("E((uint8,int16)[2][][3])")));
BOOST_CHECK_EQUAL(m_logs[0].topics[1], dev::keccak256(asString(structEnc)));
@ -13782,27 +13777,22 @@ BOOST_AUTO_TEST_CASE(abi_encodePackedV2_arrayOfStrings)
x[0] = "abc";
x[1] = "0123456789012345678901234567890123456789";
}
function testStorage() public returns (bytes memory) {
function testStorage() public {
emit E(x);
return abi.encodePacked(uint8(0x33), x, uint8(0x44));
}
function testMemory() public returns (bytes memory) {
function testMemory() public {
string[] memory y = x;
emit E(y);
return abi.encodePacked(uint8(0x33), y, uint8(0x44));
}
}
)";
compileAndRun(sourceCode, 0, "C");
bytes arrayEncoding = encodeArgs("abc", "0123456789012345678901234567890123456789");
// This pads to multiple of 32 bytes
string encoding = "\x33" + asString(arrayEncoding) + "\x44";
BOOST_CHECK_EQUAL(encoding.size(), 2 + 32 * 3);
ABI_CHECK(callContractFunction("testStorage()"), encodeArgs(0x20, encoding.size(), encoding));
ABI_CHECK(callContractFunction("testStorage()"), encodeArgs());
BOOST_REQUIRE_EQUAL(m_logs[0].topics.size(), 2);
BOOST_CHECK_EQUAL(m_logs[0].topics[0], dev::keccak256(string("E(string[])")));
BOOST_CHECK_EQUAL(m_logs[0].topics[1], dev::keccak256(asString(arrayEncoding)));
ABI_CHECK(callContractFunction("testMemory()"), encodeArgs(0x20, encoding.size(), encoding));
ABI_CHECK(callContractFunction("testMemory()"), encodeArgs());
BOOST_REQUIRE_EQUAL(m_logs[0].topics.size(), 2);
BOOST_CHECK_EQUAL(m_logs[0].topics[0], dev::keccak256(string("E(string[])")));
BOOST_CHECK_EQUAL(m_logs[0].topics[1], dev::keccak256(asString(arrayEncoding)));

2
test/libsolidity/syntaxTests/specialFunctions/abi_encodePacked_structs_v2.sol
View File

@ -12,3 +12,5 @@ contract C {
}
// ----
// Warning: (0-33): Experimental features are turned on. Do not use experimental features on live deployments.
// TypeError: (191-192): Type not supported in packed mode.
// TypeError: (194-195): Type not supported in packed mode.

4
test/libsolidity/syntaxTests/specialFunctions/abi_encode_structs.sol
View File

@ -13,5 +13,5 @@ contract C {
// ----
// TypeError: (131-132): This type cannot be encoded.
// TypeError: (134-135): This type cannot be encoded.
// TypeError: (200-201): This type cannot be encoded.
// TypeError: (203-204): This type cannot be encoded.
// TypeError: (200-201): Type not supported in packed mode.
// TypeError: (203-204): Type not supported in packed mode.

7
test/libsolidity/syntaxTests/specialFunctions/abi_encode_structs_abiv2.sol
View File

@ -5,6 +5,10 @@ contract C {
S s;
struct T { uint y; }
T t;
function e() public view {
S memory st;
abi.encodePacked(st);
}
function f() public view {
abi.encode(s, t);
}
@ -14,3 +18,6 @@ contract C {
}
// ----
// Warning: (0-33): Experimental features are turned on. Do not use experimental features on live deployments.
// TypeError: (193-195): Type not supported in packed mode.
// TypeError: (323-324): Type not supported in packed mode.
// TypeError: (326-327): Type not supported in packed mode.

2
test/libsolidity/syntaxTests/specialFunctions/encodePacked_array_of_structs.sol
View File

@ -6,4 +6,4 @@ contract C {
}
}
// ----
// TypeError: (116-117): This type cannot be encoded.
// TypeError: (116-117): Type not supported in packed mode.

13
test/libsolidity/syntaxTests/specialFunctions/encodePacked_dynamic_string_array_v2.sol Normal file
View File

@ -0,0 +1,13 @@
contract C {
string[] s;
function f() public pure {
string[] memory m;
abi.encodePacked(m);
}
function g() public pure {
abi.encodePacked(s);
}
}
// ----
// TypeError: (112-113): Type not supported in packed mode.
// TypeError: (178-179): Type not supported in packed mode.

4
test/libsolidity/syntaxTests/specialFunctions/types_with_unspecified_encoding_structs.sol
View File

@ -9,5 +9,5 @@ contract C {
}
}
// ----
// TypeError: (156-157): This type cannot be encoded.
// TypeError: (159-160): This type cannot be encoded.
// TypeError: (156-157): Type not supported in packed mode.
// TypeError: (159-160): Type not supported in packed mode.