* Add base Context contract
* Add GSNContext and tests
* Add RelayHub deployment to tests
* Add RelayProvider integration, complete GSNContext tests
* Switch dependency to openzeppelin-gsn-provider
* Add default txfee to provider
* Add basic signing recipient
* Sign more values
* Add comment clarifying RelayHub's msg.data
* Make context constructors internal
* Rename SigningRecipient to GSNRecipientSignedData
* Add ERC20Charge recipients
* Harcode RelayHub address into GSNContext
* Fix Solidity linter errors
* Run server from binary, use gsn-helpers to fund it
* Migrate to published @openzeppelin/gsn-helpers
* Silence false-positive compiler warning
* Use GSN helper assertions
* Rename meta-tx to gsn, take out of drafts
* Merge ERC20 charge recipients into a single one
* Rename GSNRecipients to Bouncers
* Add GSNBouncerUtils to decouple the bouncers from GSNRecipient
* Add _upgradeRelayHub
* Store RelayHub address using unstructored storage
* Add IRelayHub
* Add _withdrawDeposits to GSNRecipient
* Add relayHub version to recipient
* Make _acceptRelayedCall and _declineRelayedCall easier to use
* Rename GSNBouncerUtils to GSNBouncerBase, make it IRelayRecipient
* Improve GSNBouncerBase, make pre and post sender-protected and optional
* Fix GSNBouncerERC20Fee, add tests
* Add missing GSNBouncerSignature test
* Override transferFrom in __unstable__ERC20PrimaryAdmin
* Fix gsn dependencies in package.json
* Rhub address slot reduced by 1
* Rename relay hub changed event
* Use released gsn-provider
* Run relayer with short sleep of 1s instead of 100ms
* update package-lock.json
* clear circle cache
* use optimized gsn-provider
* update to latest @openzeppelin/gsn-provider
* replace with gsn dev provider
* remove relay server
* rename arguments in approveFunction
* fix GSNBouncerSignature test
* change gsn txfee
* initialize development provider only once
* update RelayHub interface
* adapt to new IRelayHub.withdraw
* update @openzeppelin/gsn-helpers
* update relayhub singleton address
* fix helper name
* set up gsn provider for coverage too
* lint
* Revert "set up gsn provider for coverage too"
This reverts commit 8a7b5be5f9.
* remove unused code
* add gsn provider to coverage
* move truffle contract options back out
* increase gas limit for coverage
* remove unreachable code
* add more gas for GSNContext test
* fix test suite name
* rename GSNBouncerBase internal API
* remove onlyRelayHub modifier
* add explicit inheritance
* remove redundant event
* update name of bouncers error codes enums
* add basic docs page for gsn contracts
* make gsn directory all caps
* add changelog entry
* lint
* enable test run to fail in coverage
* Using extcodehash instead of extcodesize for less gas
`extcodehash` uses less gas then `extcodesize`. You can tell which address is a contract by the hash (see EIP-1052).
* Fix
* Add explainer
* Update Address.sol
* add changelog entry
* Updated code style to no more than120 characters per line.
* Unify code comments style with Doxygen-style tags.
* Fix the conflicts.
* Add a return value in the contract ERC20Burnable.
* A Add a wrapper function to change type of address to address payable.
* U Modify Address utils.
* A Add test case for Address.
* U Modify code style in ERC20Burnable.
* Add changelog entry.
* Improved dev docs.
* Transaction Malleability:
If you allow for both values 0/1 and 27/28, you allow two different
signatures both resulting in a same valid recovery. (r,s,0/1) and
(r,s,27/28) would both be valid, recover the same public key and sign
the same data. Furthermore, given (r,s,0/1), (r,s,27/28) can be
constructed by anyone.
* Transaction Malleability:
EIP-2 still allows signature malleabality for ecrecover(), remove this
possibility and force the signature to be unique.
* Added a reference to appendix F to the yellow paper and improved
comment.
* better test description for testing the version 0, which returns
a zero address
* Check that the conversion from 0/1 to 27/28 only happens if its 0/1
* improved formatting
* Refactor ECDSA code a bit.
* Refactor ECDSA tests a bit.
* Add changelog entry.
* Add high-s check test.
* Refactor Counter to support increment and decrement.
* Move Counter out of drafts.
* Refactor ERC721 to use Counter.
* Rollback Counter returning the current value in increment and decrement.
* Update test/drafts/Counter.test.js
Co-Authored-By: nventuro <nicolas.venturo@gmail.com>
* Improve Counter documentation.
* Move Counter.test to utils.
* Move back Counter to drafts.
* signed safe math
* fix lint errors
* refactor overflow checks and add descriptions
* remove incorrect description
* add test for reversed arguments in multiplication test
* fix power operator
* improve multiplication test descriptions
* Update SafeMath.test.js
* add feature to changelog
