go-ethereum

Commit Graph

Author	SHA1	Message	Date
Thomas Bocek	89c6c5bb85	accounts/abi: Negative numbers not properly converted in ABI encoding When converting a negative number e.g., -2, the resulting ABI encoding should look as follows: fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe. However, since the check of the type is for an uint instead of an int, it results in the following ABI encoding: 0101010101010101010101010101010101010101010101010101010101010102. The Ethereum ABI (https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI) says, that signed integers are stored in two's complement which should be of the form ffffff.... and not 01010101..... for e.g. -1. Thus, I removed the type check in numbers.go as well as the function S256 as I don't think they are correct. Or maybe I'm missing something?	9 years ago
Jeffrey Wilcke	4880868c88	accounts/abi: fixed string and fixed size bytes packing	9 years ago
Jeffrey Wilcke	5127ec10cb	accouns/abi: refactored ABI package Refactored the abi package parsing and type handling. Relying mostly on package reflect as opposed to most of our own type reflection. Our own type reflection is still used however for cases such as Bytes and FixedBytes (abi: bytes•). This also inclused several fixes for slice handling of arbitrary and fixed size for all supported types. This also further removes implicit type casting such as assigning, for example `[2]T{} = []T{1}` will fail, however `[2]T{} == []T{1, 2}` (notice assigning slice to fixed size array). Assigning arrays to slices will always succeed if they are of the same element type. Incidentally also fixes #2379	9 years ago

Author

SHA1

Message

Date

Thomas Bocek

89c6c5bb85

accounts/abi: Negative numbers not properly converted in ABI encoding

When converting a negative number e.g., -2, the resulting ABI encoding
should look as follows:
fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffe.
However, since the check of the type is for an uint instead of an
int, it results in the following ABI encoding:
0101010101010101010101010101010101010101010101010101010101010102. The
Ethereum ABI
(https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI) says,
that signed integers are stored in two's complement which should be
of the form ffffff.... and not 01010101..... for e.g. -1. Thus, I
removed the type check in numbers.go as well as the function S256
as I don't think they are correct. Or maybe I'm missing something?

9 years ago

Jeffrey Wilcke

4880868c88

accounts/abi: fixed string and fixed size bytes packing

9 years ago

Jeffrey Wilcke

5127ec10cb

accouns/abi: refactored ABI package

Refactored the abi package parsing and type handling. Relying mostly on
package reflect as opposed to most of our own type reflection. Our own
type reflection is still used however for cases such as Bytes and
FixedBytes (abi: bytes•).

This also inclused several fixes for slice handling of arbitrary and
fixed size for all supported types.

This also further removes implicit type casting such as assigning,
for example `[2]T{} = []T{1}` will fail, however `[2]T{} == []T{1, 2}`
(notice assigning *slice* to fixed size *array*). Assigning arrays to
slices will always succeed if they are of the same element type.

Incidentally also fixes #2379

9 years ago

3 Commits (e1e2df656a46c428bfb487e5ec3d126905ff003e)