codekingpro/portable-devtools

1/**
2 * This is the Posix implementation of isexe, which uses the file
3 * mode and uid/gid values.
4 *
5 * @module
6 */
7import { statSync } from 'node:fs';
8import { stat } from 'node:fs/promises';
9/**
10 * Determine whether a path is executable according to the mode and
11 * current (or specified) user and group IDs.
12 */
13export const isexe = async (path, options = {}) => {
14    const { ignoreErrors = false } = options;
15    try {
16        return checkStat(await stat(path), options);
17    }
18    catch (e) {
19        const er = e;
20        if (ignoreErrors || er.code === 'EACCES')
21            return false;
22        throw er;
23    }
24};
25/**
26 * Synchronously determine whether a path is executable according to
27 * the mode and current (or specified) user and group IDs.
28 */
29export const sync = (path, options = {}) => {
30    const { ignoreErrors = false } = options;
31    try {
32        return checkStat(statSync(path), options);
33    }
34    catch (e) {
35        const er = e;
36        if (ignoreErrors || er.code === 'EACCES')
37            return false;
38        throw er;
39    }
40};
41const checkStat = (stat, options) => stat.isFile() && checkMode(stat, options);
42const checkMode = (stat, options) => {
43    const myUid = options.uid ?? process.getuid?.();
44    const myGroups = options.groups ?? process.getgroups?.() ?? [];
45    const myGid = options.gid ?? process.getgid?.() ?? myGroups[0];
46    if (myUid === undefined || myGid === undefined) {
47        throw new Error('cannot get uid or gid');
48    }
49    const groups = new Set([myGid, ...myGroups]);
50    const mod = stat.mode;
51    const uid = stat.uid;
52    const gid = stat.gid;
53    const u = parseInt('100', 8);
54    const g = parseInt('010', 8);
55    const o = parseInt('001', 8);
56    const ug = u | g;
57    return !!(mod & o ||
58        (mod & g && groups.has(gid)) ||
59        (mod & u && uid === myUid) ||
60        (mod & ug && myUid === 0));
61};
62//# sourceMappingURL=posix.js.map