6c7eed7580
Fresh history cut from cynarAI/evoo antigravity-handoff/project-timeline (Voice First + project timeline). Brand docs/titles as evOo; keep @rakazo/* packages as tech debt. Excludes node_modules, caches, secrets, voice blobs.
33 lines
1.6 KiB
TypeScript
33 lines
1.6 KiB
TypeScript
import { readlink } from "node:fs/promises";
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import koffi, { type LibraryHandle } from "koffi";
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import { pathFromWindowsHandle } from "./desktop-sandbox-win32-path.js";
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type KoffiFunction = ReturnType<LibraryHandle["func"]>;
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let getPath: KoffiFunction | undefined;
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let getNodeHandle: KoffiFunction | undefined;
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/** Resolve the opened object, never the pathname that was used to open it. */
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export async function fileHandlePath(fd: number): Promise<string> {
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if (process.platform === "linux") {
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// readlink preserves the kernel's path even if an ancestor has since been
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// replaced. realpath would follow the replacement and lose that guarantee.
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return readlink(`/proc/self/fd/${fd}`);
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}
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if (process.platform === "win32") {
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// Node descriptors belong to its own CRT. Looking them up in msvcrt.dll
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// can return an invalid or unrelated handle from a different descriptor table.
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getNodeHandle ??= koffi.load(null).func("intptr_t __cdecl uv_get_osfhandle(int fd)");
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return pathFromWindowsHandle(getNodeHandle(fd) as number | bigint);
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}
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if (process.platform === "darwin") {
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getPath ??= koffi.load("/usr/lib/libSystem.B.dylib").func("int fcntl(int fd, int cmd, ...)");
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const buffer = Buffer.alloc(1024); // Darwin MAXPATHLEN
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const result = getPath(fd, 50 /* F_GETPATH */, "void *", buffer) as number;
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const end = buffer.indexOf(0);
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if (result !== 0 || end <= 0) throw new Error("Cannot resolve the opened home file");
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return buffer.toString("utf8", 0, end);
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}
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throw new Error("Cannot securely read home files on this platform");
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}
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