- This was originally remaining if no callback was performed, possible resulting in unexpected behaviour and an increased attack surface.
- Also specify nonzero slot for transient storage in order to reduce the risk of dangerous slot collision.
- Store the executor address when deploying instead.
- We would like to keep all instances of tload and tstore within the callback mechanism of our main TychoRouter contract for security reasons and to prevent any unexpected behaviour
- This way it's easy to reason that UniswapV4Executor will only ever execute a delegatecall to itself. Before it could in theory execute a delegatecall to any address. One had to look at all occurences of tstore(0, x) to ensure the address was constrained.
## [1.0.0](https://github.com/propeller-heads/tycho-execution/compare/0.81.0...1.0.0) (2025-04-22)
### Features
* (WIP) Support selection of transfer into router ([528bd74](528bd746f7))
* Add sequential swap methods ([2e3ffa2](2e3ffa2c70))
* Add SequentialSwap integration test with regular approvals ([8836598](8836598e53))
* Add SingleSwap integration test and fix bug in method signatures ([9c4dfef](9c4dfef80d))
* Add TokenTransfer class to BalancerV2 ([8e7dd0b](8e7dd0b9e7))
* Add TokenTransfer class to Curve ([0e0dff7](0e0dff7f5a))
* Add transfer out for Curve ([005c5a6](005c5a6207))
* Add transfer out for Uniswap V4 ([534e4f0](534e4f00db))
* Allow for token_in_already_in_router ([655c0b2](655c0b2635))
* allow to pass msg.sender to USV3 callback ([bf4b229](bf4b229268))
* allow to pass msg.sender to USV3 callback ([e71a0bb](e71a0bb354))
* Decode single and sequential swaps in LibSwap ([9be4845](9be48456e5))
* Delete EVMStrategyEncoder (this is now unnecessary) ([1fabef7](1fabef7a97))
* Do not use V4Router for uniswap v4 ([09b5a73](09b5a732ef))
* ExecutorTransferMethods helper contract ([abd9db9](abd9db937d))
* ExecutorTransferMethods in UniswapV3Executor ([dbbd30e](dbbd30e596))
* ExecutorTransferMethods in UniswapV3Executor ([e5426f3](e5426f3038))
* Fix rollFork usage for Ekubo test ([d7b5e6d](d7b5e6dba5))
* Make USV3 callback work with direct executor call ([51a7910](51a7910844))
* No more fee taking ([89f9121](89f9121e4c))
* Optimize transfer to first pool ([bf63696](bf63696142))
* Proper USV2Executor transfer decoding + tests ([b7ff870](b7ff870a7c))
* Proper USV2Executor transfer decoding + tests ([9dce2c7](9dce2c7465))
* Proper USV3Executor transfer decoding + tests ([1e37320](1e37320087))
* Refactor callback for pancakeV3 and Ekubo to use transient storage ([deb10b8](deb10b82de))
* Refactor callback to use transient storage ([af44956](af449562b0))
* Refactor TychoEncoder ([1996fd3](1996fd39e8))
* sequential swap solution validation ([efa5096](efa5096661))
* Single swap methods. ([72ccadc](72ccadcaae))
* SingleSwapStrategyEncoder ([5efeb8b](5efeb8b305))
* SingleSwapStrategyEncoder ([03f6961](03f6961b13))
* SingleSwapStrategyEncoder ([dbf5d1d](dbf5d1ddda))
* Support in between swaps optimizations ([83d3721](83d3721bf1))
* Support out transfer straight to the receiver ([d28c254](d28c254225))
* Support returning values from the callback ([fb35a53](fb35a5305a))
* Support using the TransferType in uniswap v4 ([2ecbabe](2ecbabeafc))
* **tycho-router-encoder:** Select strategy depending on the solution ([7f14f1a](7f14f1a4ff))
* Use TokenTransfer optimization helper in Ekubo ([d4e8642](d4e864272d))
### Bug Fixes
* Add slither ignore for loop call ([15f4ed5](15f4ed5d36))
* After rebase fixes ([ae30218](ae30218842))
* bad merge ([03ef744](03ef744373))
* Bring back receiver address zero check ([8e60b6b](8e60b6beba))
* Calldata size for Ekubo pay callback ([fb855d0](fb855d00a4))
* Conscious slither silencing ([a645fc7](a645fc72ab))
* consider wrapping scenario when getting transfer type ([028e860](028e8605a1))
* Fix after merge with main ([3de5a19](3de5a192b6))
* Fix executor address in test and remove duplicated test ([9456dc7](9456dc7b0b))
* Fix integration tests with transfer in method support ([0f3a910](0f3a9101b9))
* fix slither CI action ([7431b26](7431b266e1))
* Fixes after merge with feature branch ([26e6c6c](26e6c6c266))
* Integration tests after merge ([55242fb](55242fb8c4))
* No more EVMStrategyEncoder ([fbbc4c5](fbbc4c5277))
* Post rebase fixes ([01483c4](01483c4407))
* Prevent multiple callbacks ([f91b101](f91b101a94))
* properly add ekubo_v2 to constants ([24dd814](24dd814098))
* Remove --ignore-compile flag for slither ([353667e](353667e565))
* Remove router_address from Solution object ([9eb18f4](9eb18f4474))
* Rename constants and update docstrings for clarity ([11dffdc](11dffdcb28))
* test fix after rebase ([e05ffed](e05ffedd5d))
* Test+formatting fixes after rebase. ([6cf0f52](6cf0f523c1))
* TransferType renaming after rebase ([12c410b](12c410bb03))
* unsupported protocols for chained swaps are always unsupported ([9ce6fc0](9ce6fc0153))
* USV3 encoding/decoding after rebase ([2d0a3ac](2d0a3ac3fd))
- Needed to add ekubo and uniswap v4 to callback-limited protocols.
- I had to bump the fork block in all of our integration tests: The way it was before meant that certain integration tests were using certain executor addresses, and others were using different ones, because of the redeployment. This was a pain to account for on the rust side. Instead, all tests now use an Ekubo-compatible fork block. Values needed to be updated because of price changes between blocks.
- This fee is not the same depending on the fork. For example, Pancake V2 uses a 0.25% fee, while the USV2 fee is 0.3%. We were wrongly hard-coding this fee to 0.3%.
- We have decided to now support calling our executors normally (without using delegatecalls) since they now support specifying token transfers.
- This was disabled for UniswapV3 in the past also because of data decoding issues. This seems to be the solution, though.
