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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// TODO(petamoriken): enable prefer-primordials for node polyfills
// deno-lint-ignore-file prefer-primordials
import {
type CallbackWithError,
makeCallback,
} from "ext:deno_node/_fs/_fs_common.ts";
import { fs } from "ext:deno_node/internal_binding/constants.ts";
import { codeMap } from "ext:deno_node/internal_binding/uv.ts";
import {
getValidatedPath,
getValidMode,
} from "ext:deno_node/internal/fs/utils.mjs";
import type { Buffer } from "node:buffer";
import { promisify } from "ext:deno_node/internal/util.mjs";
export function access(
path: string | Buffer | URL,
mode: number | CallbackWithError,
callback?: CallbackWithError,
) {
if (typeof mode === "function") {
callback = mode;
mode = fs.F_OK;
}
path = getValidatedPath(path).toString();
mode = getValidMode(mode, "access");
const cb = makeCallback(callback);
Deno.lstat(path).then((info) => {
if (info.mode === null) {
// If the file mode is unavailable, we pretend it has
// the permission
cb(null);
return;
}
const m = +mode || 0;
let fileMode = +info.mode || 0;
if (Deno.build.os !== "windows" && info.uid === Deno.uid()) {
// If the user is the owner of the file, then use the owner bits of
// the file permission
fileMode >>= 6;
}
// TODO(kt3k): Also check the case when the user belong to the group
// of the file
if ((m & fileMode) === m) {
// all required flags exist
cb(null);
} else {
// some required flags don't
// deno-lint-ignore no-explicit-any
const e: any = new Error(`EACCES: permission denied, access '${path}'`);
e.path = path;
e.syscall = "access";
e.errno = codeMap.get("EACCES");
e.code = "EACCES";
cb(e);
}
}, (err) => {
if (err instanceof Deno.errors.NotFound) {
// deno-lint-ignore no-explicit-any
const e: any = new Error(
`ENOENT: no such file or directory, access '${path}'`,
);
e.path = path;
e.syscall = "access";
e.errno = codeMap.get("ENOENT");
e.code = "ENOENT";
cb(e);
} else {
cb(err);
}
});
}
export const accessPromise = promisify(access) as (
path: string | Buffer | URL,
mode?: number,
) => Promise<void>;
export function accessSync(path: string | Buffer | URL, mode?: number) {
path = getValidatedPath(path).toString();
mode = getValidMode(mode, "access");
try {
const info = Deno.lstatSync(path.toString());
if (info.mode === null) {
// If the file mode is unavailable, we pretend it has
// the permission
return;
}
const m = +mode! || 0;
let fileMode = +info.mode! || 0;
if (Deno.build.os !== "windows" && info.uid === Deno.uid()) {
// If the user is the owner of the file, then use the owner bits of
// the file permission
fileMode >>= 6;
}
// TODO(kt3k): Also check the case when the user belong to the group
// of the file
if ((m & fileMode) === m) {
// all required flags exist
} else {
// some required flags don't
// deno-lint-ignore no-explicit-any
const e: any = new Error(`EACCES: permission denied, access '${path}'`);
e.path = path;
e.syscall = "access";
e.errno = codeMap.get("EACCES");
e.code = "EACCES";
throw e;
}
} catch (err) {
if (err instanceof Deno.errors.NotFound) {
// deno-lint-ignore no-explicit-any
const e: any = new Error(
`ENOENT: no such file or directory, access '${path}'`,
);
e.path = path;
e.syscall = "access";
e.errno = codeMap.get("ENOENT");
e.code = "ENOENT";
throw e;
} else {
throw err;
}
}
}
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