@shockpkg/dir-projector/lib/patcher.mjs.map

Package for creating Shockwave Director projectors

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fse from 'fs-extra';\n\ninterface IPatcherPatch {\n\n\t/**\n\t * The bytes to find.\n\t */\n\tfind: (number | null)[];\n\n\t/**\n\t * The bytes replaced with.\n\t */\n\treplace: (number | null)[];\n}\n\n/**\n * Converts a hex string into a series of byte values, with unknowns being null.\n *\n * @param str Hex string.\n * @returns Bytes and null values.\n */\nfunction patchHexToBytes(str: string) {\n\treturn (str.replace(/[\\s\\r\\n]/g, '').match(/.{1,2}/g) || []).map(s => {\n\t\tif (s.length !== 2) {\n\t\t\tthrow new Error('Internal error');\n\t\t}\n\t\treturn /[0-9A-F]{2}/i.test(s) ? parseInt(s, 16) : null;\n\t});\n}\n\n/* eslint-disable no-multi-spaces */\n/* eslint-disable line-comment-position */\n/* eslint-disable no-inline-comments */\n// A list of patch candidates, made to be partially position independant.\n// Basically these patches just increase the temporary buffer sizes.\n// Enough to provide amply room for anything that should be in the registry.\n// Sizes 0x10000 for ASCII, and 0x20000 for WCHAR.\n// Not enough room to calculate the correct size, and use it directly.\nconst patchWindowsS3dInstalledDisplayDriversSizePatches: IPatcherPatch[] = [\n\t// director-8.5.0 - director-11.0.0-hotfix-1:\n\t{\n\t\tfind: patchHexToBytes([\n\t\t\t'FF 15 -- -- -- --', // call    DWORD PTR ds:-- -- -- --\n\t\t\t'BE 04 01 00 00',    // mov     esi, 0x104\n\t\t\t'56',                // push    esi\n\t\t\t'E8 -- -- -- --'     // call    -- -- -- --\n\t\t].join(' ')),\n\t\treplace: patchHexToBytes([\n\t\t\t'FF 15 -- -- -- --', // call    DWORD PTR ds:-- -- -- --\n\t\t\t// Change:\n\t\t\t'BE 00 00 01 00',    // mov     esi, 0x10000\n\t\t\t'56',                // push    esi\n\t\t\t'E8 -- -- -- --'     // call    -- -- -- --\n\t\t].join(' '))\n\t},\n\t// director-11.0.0-hotfix-3 - director-11.5.0:\n\t{\n\t\tfind: patchHexToBytes([\n\t\t\t'FF 15 -- -- -- --', // call    DWORD PTR ds:-- -- -- --\n\t\t\t'BF 04 01 00 00',    // mov     edi, 0x104\n\t\t\t'57',                // push    edi\n\t\t\t'E8 -- -- -- --'     // call    -- -- -- --\n\t\t].join(' ')),\n\t\treplace: patchHexToBytes([\n\t\t\t'FF 15 -- -- -- --', // call    DWORD PTR ds:-- -- -- --\n\t\t\t// Change:\n\t\t\t'BF 00 00 01 00',    // mov     edi, 0x10000\n\t\t\t'57',                // push    edi\n\t\t\t'E8 -- -- -- --'     // call    -- -- -- --\n\t\t].join(' '))\n\t},\n\t// director-11.5.8 - director-11.5.9:\n\t{\n\t\tfind: patchHexToBytes([\n\t\t\t'68 -- -- -- --',    // push    -- -- -- --\n\t\t\t'57',                // push    edi\n\t\t\t'FF D6',             // call    esi\n\t\t\t'68 08 02 00 00',    // push    0x208\n\t\t\t'E8 -- -- -- --'     // call    -- -- -- --\n\t\t].join(' ')),\n\t\treplace: patchHexToBytes([\n\t\t\t'68 -- -- -- --',    // push    -- -- -- --\n\t\t\t'57',                // push    edi\n\t\t\t'FF D6',             // call    esi\n\t\t\t// Change:\n\t\t\t'68 00 00 02 00',    // push    0x20000\n\t\t\t'E8 -- -- -- --'     // call    -- -- -- --\n\t\t].join(' '))\n\t},\n\t// director-12.0.0:\n\t{\n\t\tfind: patchHexToBytes([\n\t\t\t'68 -- -- -- --',    // push    -- -- -- --\n\t\t\t'53',                // push    ebx\n\t\t\t'FF D7',             // call    edi\n\t\t\t'68 08 02 00 00',    // push    0x208\n\t\t\t'E8 -- -- -- --'     // call    -- -- -- --\n\t\t].join(' ')),\n\t\treplace: patchHexToBytes([\n\t\t\t'68 -- -- -- --',    // push    -- -- -- --\n\t\t\t'53',                // push    ebx\n\t\t\t'FF D7',             // call    edi\n\t\t\t// Change:\n\t\t\t'68 00 00 02 00',    // push    0x20000\n\t\t\t'E8 -- -- -- --'     // call    -- -- -- --\n\t\t].join(' '))\n\t}\n];\n/* eslint-enable no-multi-spaces */\n/* eslint-enable line-comment-position */\n/* eslint-enable no-inline-comments */\n\n/**\n * Patch data buffer once.\n *\n * @param data Data buffer.\n * @param candidates Patch candidates.\n * @param name Patch name.\n */\nfunction patchDataOnce(\n\tdata: Buffer,\n\tcandidates: IPatcherPatch[],\n\tname: string\n) {\n\t// Search the buffer for patch candidates.\n\tlet foundOffset = -1;\n\tlet foundPatch: (number | null)[] = [];\n\tfor (const patch of candidates) {\n\t\tconst {find, replace} = patch;\n\t\tif (replace.length !== find.length) {\n\t\t\tthrow new Error('Internal error');\n\t\t}\n\n\t\tconst end = data.length - find.length;\n\t\tfor (let i = 0; i < end; i++) {\n\t\t\tlet found = true;\n\t\t\tfor (let j = 0; j < find.length; j++) {\n\t\t\t\tconst b = find[j];\n\t\t\t\tif (b !== null && data[i + j] !== b) {\n\t\t\t\t\tfound = false;\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (!found) {\n\t\t\t\tcontinue;\n\t\t\t}\n\t\t\tif (foundOffset !== -1) {\n\t\t\t\tthrow new Error(\n\t\t\t\t\t`Multiple patch candidates found for: ${name}`\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// Remember patch to apply.\n\t\t\tfoundOffset = i;\n\t\t\tfoundPatch = replace;\n\t\t}\n\t}\n\tif (foundOffset === -1) {\n\t\tthrow new Error(`No patch candidates found for: ${name}`);\n\t}\n\n\t// Apply the patch to the buffer, and write to file.\n\tfor (let i = 0; i < foundPatch.length; i++) {\n\t\tconst b = foundPatch[i];\n\t\tif (b !== null) {\n\t\t\tdata[foundOffset + i] = b;\n\t\t}\n\t}\n}\n\n/**\n * Patch a file once.\n *\n * @param file File path.\n * @param candidates Patch candidates.\n * @param name Patch name.\n */\nasync function patchFileOnce(\n\tfile: string,\n\tcandidates: IPatcherPatch[],\n\tname: string\n) {\n\tconst data = await fse.readFile(file);\n\tpatchDataOnce(data, candidates, name);\n\tawait fse.writeFile(file, data);\n}\n\n/**\n * Patch Windows Shockwave 3D InstalledDisplayDrivers size.\n *\n * @param file File path.\n */\nexport async function patchWindowsS3dInstalledDisplayDriversSize(\n\tfile: string\n) {\n\tawait patchFileOnce(\n\t\tfile,\n\t\tpatchWindowsS3dInstalledDisplayDriversSizePatches,\n\t\t'Windows Shockwave 3D InstalledDisplayDrivers Size'\n\t);\n}\n"],"file":"patcher.mjs","sourceRoot":"../src"}