@metamask/snaps-rpc-methods
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MetaMask Snaps JSON-RPC method implementations
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{"version":3,"file":"getFile.mjs","sourceRoot":"","sources":["../../src/permitted/getFile.ts"],"names":[],"mappings":"AAEA,OAAO,EAAE,SAAS,EAAE,6BAA6B;AAEjD,OAAO,EAAE,qBAAqB,EAAE,SAAS,EAAE,4BAA4B;AAEvE,OAAO,EAAE,MAAM,EAAE,QAAQ,EAAE,MAAM,EAAE,KAAK,EAAE,8BAA8B;AAExE,OAAO,EAAE,YAAY,EAAE,wBAAwB;AAI/C,MAAM,CAAC,MAAM,iBAAiB,GAAG,MAAM,CAAC;IACtC,IAAI,EAAE,MAAM,EAAE;IACd,QAAQ,EAAE,QAAQ,CAChB,KAAK,CAAC;QACJ,SAAS,CAAC,qBAAqB,CAAC,MAAM,CAAC;QACvC,SAAS,CAAC,qBAAqB,CAAC,GAAG,CAAC;QACpC,SAAS,CAAC,qBAAqB,CAAC,IAAI,CAAC;KACtC,CAAC,CACH;CACF,CAAC,CAAC;AAOH,MAAM,SAAS,GAAoC;IACjD,WAAW,EAAE,IAAI;CAClB,CAAC;AAEF,MAAM,CAAC,MAAM,cAAc,GAIvB;IACF,WAAW,EAAE,CAAC,cAAc,CAAC;IAC7B,cAAc;IACd,SAAS;CACV,CAAC;AASF;;;;;;;;;;;GAWG;AACH,KAAK,UAAU,cAAc,CAC3B,GAA0C,EAC1C,GAA0C,EAC1C,KAAc,EACd,GAA6B,EAC7B,EAAE,WAAW,EAAgB;IAE7B,MAAM,EAAE,MAAM,EAAE,GAAG,GAAG,CAAC;IAEvB,YAAY,CACV,MAAM,EACN,iBAAiB,EACjB,mCAAmC,EACnC,SAAS,CAAC,aAAa,CACxB,CAAC;IAEF,IAAI,CAAC;QACH,GAAG,CAAC,MAAM,GAAG,MAAM,WAAW,CAC5B,MAAM,CAAC,IAAI,EACX,MAAM,CAAC,QAAQ,IAAI,qBAAqB,CAAC,MAAM,CAChD,CAAC;IACJ,CAAC;IAAC,OAAO,KAAK,EAAE,CAAC;QACf,OAAO,GAAG,CAAC,KAAK,CAAC,CAAC;IACpB,CAAC;IAED,OAAO,GAAG,EAAE,CAAC;AACf,CAAC","sourcesContent":["import type { JsonRpcEngineEndCallback } from '@metamask/json-rpc-engine';\nimport type { PermittedHandlerExport } from '@metamask/permission-controller';\nimport { rpcErrors } from '@metamask/rpc-errors';\nimport type { GetFileParams, GetFileResult } from '@metamask/snaps-sdk';\nimport { AuxiliaryFileEncoding, enumValue } from '@metamask/snaps-sdk';\nimport type { InferMatching } from '@metamask/snaps-utils';\nimport { object, optional, string, union } from '@metamask/superstruct';\nimport type { PendingJsonRpcResponse, JsonRpcRequest } from '@metamask/utils';\nimport { assertStruct } from '@metamask/utils';\n\nimport type { MethodHooksObject } from '../utils';\n\nexport const GetFileArgsStruct = object({\n path: string(),\n encoding: optional(\n union([\n enumValue(AuxiliaryFileEncoding.Base64),\n enumValue(AuxiliaryFileEncoding.Hex),\n enumValue(AuxiliaryFileEncoding.Utf8),\n ]),\n ),\n});\n\nexport type InferredGetFileParams = InferMatching<\n typeof GetFileArgsStruct,\n GetFileParams\n>;\n\nconst hookNames: MethodHooksObject<GetFileHooks> = {\n getSnapFile: true,\n};\n\nexport const getFileHandler: PermittedHandlerExport<\n GetFileHooks,\n InferredGetFileParams,\n string\n> = {\n methodNames: ['snap_getFile'],\n implementation,\n hookNames,\n};\n\nexport type GetFileHooks = {\n getSnapFile: (\n path: InferredGetFileParams['path'],\n encoding: InferredGetFileParams['encoding'],\n ) => Promise<string>;\n};\n\n/**\n * The `snap_getFile` method implementation.\n *\n * @param req - The JSON-RPC request object.\n * @param res - The JSON-RPC response object.\n * @param _next - The `json-rpc-engine` \"next\" callback. Not used by this\n * function.\n * @param end - The `json-rpc-engine` \"end\" callback.\n * @param hooks - The RPC method hooks.\n * @param hooks.getSnapFile - The function to load a static snap file.\n * @returns Nothing.\n */\nasync function implementation(\n req: JsonRpcRequest<InferredGetFileParams>,\n res: PendingJsonRpcResponse<GetFileResult>,\n _next: unknown,\n end: JsonRpcEngineEndCallback,\n { getSnapFile }: GetFileHooks,\n): Promise<void> {\n const { params } = req;\n\n assertStruct(\n params,\n GetFileArgsStruct,\n 'Invalid \"snap_getFile\" parameters',\n rpcErrors.invalidParams,\n );\n\n try {\n res.result = await getSnapFile(\n params.path,\n params.encoding ?? AuxiliaryFileEncoding.Base64,\n );\n } catch (error) {\n return end(error);\n }\n\n return end();\n}\n"]}