corrade-nucleus-nucleons – Blame information for rev 36
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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 36 | office | 1 | module.exports = isexe |
| 2 | isexe.sync = sync |
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| 3 | |||
| 4 | var fs = require('fs') |
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| 5 | |||
| 6 | function isexe (path, options, cb) { |
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| 7 | fs.stat(path, function (er, stat) { |
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| 8 | cb(er, er ? false : checkStat(stat, options)) |
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| 9 | }) |
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| 10 | } |
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| 11 | |||
| 12 | function sync (path, options) { |
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| 13 | return checkStat(fs.statSync(path), options) |
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| 14 | } |
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| 15 | |||
| 16 | function checkStat (stat, options) { |
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| 17 | return stat.isFile() && checkMode(stat, options) |
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| 18 | } |
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| 19 | |||
| 20 | function checkMode (stat, options) { |
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| 21 | var mod = stat.mode |
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| 22 | var uid = stat.uid |
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| 23 | var gid = stat.gid |
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| 24 | |||
| 25 | var myUid = options.uid !== undefined ? |
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| 26 | options.uid : process.getuid && process.getuid() |
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| 27 | var myGid = options.gid !== undefined ? |
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| 28 | options.gid : process.getgid && process.getgid() |
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| 29 | |||
| 30 | var u = parseInt('100', 8) |
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| 31 | var g = parseInt('010', 8) |
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| 32 | var o = parseInt('001', 8) |
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| 33 | var ug = u | g |
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| 34 | |||
| 35 | var ret = (mod & o) || |
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| 36 | (mod & g) && gid === myGid || |
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| 37 | (mod & u) && uid === myUid || |
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| 38 | (mod & ug) && myUid === 0 |
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| 39 | |||
| 40 | return ret |
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| 41 | } |