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42 lines
909 B
JavaScript
42 lines
909 B
JavaScript
module.exports = isexe
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isexe.sync = sync
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var fs = require('fs')
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function isexe (path, options, cb) {
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fs.stat(path, function (er, stat) {
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cb(er, er ? false : checkStat(stat, options))
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})
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}
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function sync (path, options) {
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return checkStat(fs.statSync(path), options)
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}
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function checkStat (stat, options) {
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return stat.isFile() && checkMode(stat, options)
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}
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function checkMode (stat, options) {
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var mod = stat.mode
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var uid = stat.uid
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var gid = stat.gid
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var myUid = options.uid !== undefined ?
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options.uid : process.getuid && process.getuid()
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var myGid = options.gid !== undefined ?
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options.gid : process.getgid && process.getgid()
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var u = parseInt('100', 8)
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var g = parseInt('010', 8)
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var o = parseInt('001', 8)
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var ug = u | g
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var ret = (mod & o) ||
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(mod & g) && gid === myGid ||
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(mod & u) && uid === myUid ||
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(mod & ug) && myUid === 0
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return ret
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}
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