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unix.js
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unix.js
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let shell = require("./shell.js")
let fs = require("fs-extra")
let userid = require("userid")
let unix = exports
exports.commonGroupName = "common"
exports.lowerGroupName = "undercommon"
exports.checkYourPrivilege = function () {
return process.getuid() === 0
}
exports.getUserId = snoot => {
try {
return userid.uid(snoot)
} catch (error) {
return undefined
}
}
exports.getCommonGid = () => {
try {
return userid.gid(unix.commonGroupName)
} catch (error) {
return undefined
}
}
exports.checkUserExists = async function checkUserExists (snoot) {
return await unix.getUserId(snoot) != null
}
exports.createUser = async function createUser ({
user,
homeDirectory,
groups
}) {
let command = [
"useradd -M",
"-d", homeDirectory,
"-g", groups[0],
"-G", groups.join(","),
"-s /bin/bash",
user
].join(" ")
return shell.run(command, {sudo: true})
.then(code => code && Promise.reject(command))
}
exports.chmod = async function chmod ({mode, path, recurse = true}) {
let r = recurse ? "-R" : ""
return shell.run(
`chmod ${r} ${mode} ${path}`,
{sudo: true}
)
}
exports.chown = async function chmod ({user, group, path, recurse = true}) {
let r = recurse ? "-R" : ""
return shell.run(
`chown ${r} ${user}.${group} ${path}`,
{sudo: true}
)
}
exports.unmount = directory =>
shell.run(
`umount ${directory}`,
{sudo: true}
)
exports.ln = async function ln ({from, to, symbolic = true, sudo = true}) {
let s = symbolic
? "-s"
: ""
return shell.run(
`ln ${s} ${to} ${from}`,
{sudo}
)
}