{"componentChunkName":"component---node-modules-rocketseat-gatsby-theme-docs-core-src-templates-docs-query-js","path":"/manual-review/TokenTransferAuthorizationLib-TTA","result":{"data":{"mdx":{"id":"8751060b-8753-5354-86bb-84b11ad36bc4","excerpt":"TTA-01M: Potentially Restrictive Panic Type Severity Location Standard Conformity TokenTransferAuthorizationLib.sol:L186-L194 Description: The…","fields":{"slug":"/manual-review/TokenTransferAuthorizationLib-TTA/"},"frontmatter":{"title":"TokenTransferAuthorizationLib Manual Review Findings","description":"Contains all the findings that relate to manual review on the contract codebase","image":null,"disableTableOfContents":null},"body":"var _excluded = [\"components\"];\n\nfunction _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }\n\nfunction _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }\n\nfunction _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }\n\n/* @jsxRuntime classic */\n\n/* @jsx mdx */\nvar _frontmatter = {\n  \"title\": \"TokenTransferAuthorizationLib Manual Review Findings\",\n  \"description\": \"Contains all the findings that relate to manual review on the contract codebase\"\n};\nvar layoutProps = {\n  _frontmatter: _frontmatter\n};\nvar MDXLayout = \"wrapper\";\nreturn function MDXContent(_ref) {\n  var components = _ref.components,\n      props = _objectWithoutProperties(_ref, _excluded);\n\n  return mdx(MDXLayout, _extends({}, layoutProps, props, {\n    components: components,\n    mdxType: \"MDXLayout\"\n  }), mdx(\"h2\", {\n    \"id\": \"span-idtta-01mtta-01m-potentially-restrictive-panicspan\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h2\",\n    \"href\": \"#span-idtta-01mtta-01m-potentially-restrictive-panicspan\",\n    \"aria-label\": \"span idtta 01mtta 01m potentially restrictive panicspan permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": 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}, mdx(\"tr\", {\n    parentName: \"tbody\"\n  }, mdx(\"td\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, mdx(\"a\", {\n    parentName: \"td\",\n    \"href\": \"/reports/boson-protocol-x402-payment-support-6a0aeadb0b10630016abab2d/appendix/finding-types#standard-conformity\"\n  }, \"Standard Conformity\")), mdx(\"td\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, mdx(\"img\", {\n    parentName: \"td\",\n    \"className\": \"o-severity o-informational\",\n    \"src\": \"https://omniscia.io/report-assets/informational.png\"\n  })), mdx(\"td\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, mdx(\"a\", {\n    parentName: \"td\",\n    \"href\": \"https://github.com/bosonprotocol/boson-protocol-contracts/blob/858661679cc8ba2be97eedf3cbc3acd0f5c1903e/contracts/protocol/libs/TokenTransferAuthorizationLib.sol#L186-L194\"\n  }, \"TokenTransferAuthorizationLib.sol:L186-L194\"))))), mdx(\"h3\", {\n    \"id\": \"description\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#description\",\n    \"aria-label\": \"description permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Description:\"), mdx(\"p\", null, \"The \", mdx(\"a\", {\n    parentName: \"p\",\n    \"href\": \"https://github.com/bosonprotocol/boson-protocol-contracts/blob/858661679cc8ba2be97eedf3cbc3acd0f5c1903e/contracts/protocol/libs/TokenTransferAuthorizationLib.sol#L175-L210\"\n  }, mdx(\"inlineCode\", {\n    parentName: \"a\"\n  }, \"TokenTransferAuthorizationLib::consumeForTransfer\")), \" function will attempt to decode token transfer authorization strategies and revert via a panic if an unknown \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"TokenTransferAuthorizationStrategy\"), \" enum is provided.\"), mdx(\"p\", null, \"As the Boson Protocol codebase is deployed across multiple chains, certain chains might have different authorization strategies with some possessing more than others. In such cases, the construction of transactions would be burdensome as, depending on the network, different payloads would have to be created to avoid this revert.\"), mdx(\"h3\", {\n    \"id\": \"example\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#example\",\n    \"aria-label\": \"example permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Example:\"), mdx(\"pre\", null, mdx(\"code\", {\n    parentName: \"pre\",\n    \"className\": \"language-sol\",\n    \"metastring\": \"title=contracts/protocol/libs/TokenTransferAuthorizationLib.sol highlight={6,8} lineNumbers=true lineOffset=185\",\n    \"title\": \"contracts/protocol/libs/TokenTransferAuthorizationLib.sol\",\n    \"highlight\": \"{6,8}\",\n    \"lineNumbers\": \"true\",\n    \"lineOffset\": \"185\"\n  }, \"// Decoding as the enum makes Solidity range-check the tag for us: any\\n// value outside `TokenTransferAuthorizationStrategy`'s declared range\\n// trips `Panic(0x21)` inside `abi.decode`. The dispatch below therefore\\n// only needs to handle the four known strategies and can fall through\\n// to `return false` for `None`.\\n(BosonTypes.TokenTransferAuthorizationStrategy strategy, bytes memory data) = abi.decode(\\n    entry,\\n    (BosonTypes.TokenTransferAuthorizationStrategy, bytes)\\n);\\n\")), mdx(\"h3\", {\n    \"id\": \"recommendation\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#recommendation\",\n    \"aria-label\": \"recommendation permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Recommendation:\"), mdx(\"p\", null, \"We advise the code to instead return \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"false\"), \" if the decoding operation is not possible, optimizing the protocol's cross-chain usage.\"), mdx(\"h3\", {\n    \"id\": \"alleviation-8fccc2716047809e4bc7786c95d346e5c61b2896\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#alleviation-8fccc2716047809e4bc7786c95d346e5c61b2896\",\n    \"aria-label\": \"alleviation 8fccc2716047809e4bc7786c95d346e5c61b2896 permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Alleviation (8fccc2716047809e4bc7786c95d346e5c61b2896):\"), mdx(\"p\", null, \"The Boson Protocol team evaluated this exhibit and clarified that the strategies they employ cross-chain are consistent and that reverting is the correct course of action for the current deployment expected, with intentions to add graceful handling if the cross-chain deployments deviate in their strategies.\"), mdx(\"p\", null, \"As such, we consider this exhibit safely acknowledged.\"), mdx(\"h2\", {\n    \"id\": \"span-idtta-02mtta-02m-inexistent-support-of-dai-permitspan\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h2\",\n    \"href\": \"#span-idtta-02mtta-02m-inexistent-support-of-dai-permitspan\",\n    \"aria-label\": \"span idtta 02mtta 02m inexistent support of dai permitspan permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), mdx(\"span\", {\n    id: \"TTA-02M\"\n  }, \"TTA-02M: Inexistent Support of DAI Permit\")), mdx(\"table\", null, mdx(\"thead\", {\n    parentName: \"table\"\n  }, mdx(\"tr\", {\n    parentName: \"thead\"\n  }, mdx(\"th\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, \"Type\"), mdx(\"th\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, \"Severity\"), mdx(\"th\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, \"Location\"))), mdx(\"tbody\", {\n    parentName: \"table\"\n  }, mdx(\"tr\", {\n    parentName: \"tbody\"\n  }, mdx(\"td\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, mdx(\"a\", {\n    parentName: \"td\",\n    \"href\": \"/reports/boson-protocol-x402-payment-support-6a0aeadb0b10630016abab2d/appendix/finding-types#standard-conformity\"\n  }, \"Standard Conformity\")), mdx(\"td\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, mdx(\"img\", {\n    parentName: \"td\",\n    \"className\": \"o-severity o-minor\",\n    \"src\": \"https://omniscia.io/report-assets/minor.png\"\n  })), mdx(\"td\", {\n    parentName: \"tr\",\n    \"align\": null\n  }, mdx(\"a\", {\n    parentName: \"td\",\n    \"href\": \"https://github.com/bosonprotocol/boson-protocol-contracts/blob/858661679cc8ba2be97eedf3cbc3acd0f5c1903e/contracts/protocol/libs/TokenTransferAuthorizationLib.sol#L241-L243\"\n  }, \"TokenTransferAuthorizationLib.sol:L241-L243\"))))), mdx(\"h3\", {\n    \"id\": \"description-1\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#description-1\",\n    \"aria-label\": \"description 1 permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Description:\"), mdx(\"p\", null, \"The codebase is meant to be compatible with DAI as indicated by the presence of the \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"DAIAliases\"), \" file and the \", mdx(\"inlineCode\", {\n    parentName: \"p\"\n  }, \"SudoswapWrapper\"), \" yet does not support its permit flow.\"), mdx(\"h3\", {\n    \"id\": \"impact\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#impact\",\n    \"aria-label\": \"impact permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Impact:\"), mdx(\"p\", null, \"The DAI token permit is currently unsupported by the Boson Protocol system even though DAI itself is actively used in the protocol.\"), mdx(\"h3\", {\n    \"id\": \"example-1\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#example-1\",\n    \"aria-label\": \"example 1 permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Example:\"), mdx(\"pre\", null, mdx(\"code\", {\n    parentName: \"pre\",\n    \"className\": \"language-sol\",\n    \"metastring\": \"title=contracts/protocol/libs/TokenTransferAuthorizationLib.sol highlight={4} lineNumbers=true lineOffset=238\",\n    \"title\": \"contracts/protocol/libs/TokenTransferAuthorizationLib.sol\",\n    \"highlight\": \"{4}\",\n    \"lineNumbers\": \"true\",\n    \"lineOffset\": \"238\"\n  }, \"function _consumeEIP2612(address _token, address _from, address _to, uint256 _amount, bytes memory _data) private {\\n    (uint256 deadline, uint8 v, bytes32 r, bytes32 s) = abi.decode(_data, (uint256, uint8, bytes32, bytes32));\\n    if (IERC20(_token).allowance(_from, _to) != _amount) {\\n        IERC2612(_token).permit(_from, _to, _amount, deadline, v, r, s);\\n    }\\n    IERC20(_token).safeTransferFrom(_from, _to, _amount);\\n}\\n\")), mdx(\"h3\", {\n    \"id\": \"recommendation-1\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#recommendation-1\",\n    \"aria-label\": \"recommendation 1 permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Recommendation:\"), mdx(\"p\", null, \"We advise the DAI-specific permit signature and flow to be supported similarly to the existing \", mdx(\"a\", {\n    parentName: \"p\",\n    \"href\": \"https://eips.ethereum.org/EIPS/eip-2612\"\n  }, \"EIP-2612\"), \" permit flow.\"), mdx(\"h3\", {\n    \"id\": \"alleviation-8fccc2716047809e4bc7786c95d346e5c61b2896-1\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    parentName: \"h3\",\n    \"href\": \"#alleviation-8fccc2716047809e4bc7786c95d346e5c61b2896-1\",\n    \"aria-label\": \"alleviation 8fccc2716047809e4bc7786c95d346e5c61b2896 1 permalink\",\n    \"className\": \"anchor before\"\n  }, mdx(\"svg\", {\n    parentName: \"a\",\n    \"aria-hidden\": \"true\",\n    \"focusable\": \"false\",\n    \"height\": \"16\",\n    \"version\": \"1.1\",\n    \"viewBox\": \"0 0 16 16\",\n    \"width\": \"16\"\n  }, mdx(\"path\", {\n    parentName: \"svg\",\n    \"fillRule\": \"evenodd\",\n    \"d\": \"M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z\"\n  }))), \"Alleviation (8fccc2716047809e4bc7786c95d346e5c61b2896):\"), mdx(\"p\", null, \"Proper support for DAI-like permits has been introduced by merging \", mdx(\"a\", {\n    parentName: \"p\",\n    \"href\": \"https://eips.ethereum.org/EIPS/eip-2612\"\n  }, \"EIP-2612\"), \" and DAI-like permit functionality into a single \", mdx(\"a\", {\n    parentName: \"p\",\n    \"href\": \"https://github.com/bosonprotocol/boson-protocol-contracts/blob/8fccc2716047809e4bc7786c95d346e5c61b2896/contracts/protocol/libs/TokenTransferAuthorizationLib.sol#L252-L264\"\n  }, mdx(\"inlineCode\", {\n    parentName: \"a\"\n  }, \"TokenTransferAuthorizationLib::_consumePermit\")), \" handler, alleviating this exhibit.\"), mdx(ViewDiffButton, {\n    repoUrl: \"https://github.com/bosonprotocol/boson-protocol-contracts\",\n    mainHash: \"858661679cc8ba2be97eedf3cbc3acd0f5c1903e\",\n    fixHash: \"8fccc2716047809e4bc7786c95d346e5c61b2896\",\n    gitHubIssue: \"1153\",\n    mdxType: \"ViewDiffButton\"\n  }));\n}\n;\nMDXContent.isMDXComponent = true;","headings":[{"depth":2,"value":"<span id=\"TTA-01M\">TTA-01M: Potentially Restrictive Panic</span>"},{"depth":3,"value":"Description:"},{"depth":3,"value":"Example:"},{"depth":3,"value":"Recommendation:"},{"depth":3,"value":"Alleviation (8fccc2716047809e4bc7786c95d346e5c61b2896):"},{"depth":2,"value":"<span id=\"TTA-02M\">TTA-02M: Inexistent Support of DAI Permit</span>"},{"depth":3,"value":"Description:"},{"depth":3,"value":"Impact:"},{"depth":3,"value":"Example:"},{"depth":3,"value":"Recommendation:"},{"depth":3,"value":"Alleviation (8fccc2716047809e4bc7786c95d346e5c61b2896):"}]}},"pageContext":{"slug":"/manual-review/TokenTransferAuthorizationLib-TTA/","prev":{"label":"ExchangeCommitFacet.sol (ECF-M)","link":"/manual-review/ExchangeCommitFacet-ECF"},"next":{"label":"ExchangeCommitBase.sol (ECB-C)","link":"/code-style/ExchangeCommitBase-ECB"}}},"staticQueryHashes":["1954253342","2328931024","2501019404","973074209"]}