headplane/app/integration/proc.ts
2024-07-10 19:26:59 -04:00

84 lines
1.7 KiB
TypeScript

import { readdir, readFile } from 'node:fs/promises'
import { platform } from 'node:os'
import { join, resolve } from 'node:path'
import { kill } from 'node:process'
import log from '~/utils/log'
import { createIntegration } from './integration'
interface Context {
pid: number | undefined
}
export default createIntegration<Context>({
name: 'Native Linux (/proc)',
context: {
pid: undefined,
},
isAvailable: async ({ pid }) => {
if (platform() !== 'linux') {
log.error('INTG', '/proc is only available on Linux')
return false
}
const dir = resolve('/proc')
try {
const subdirs = await readdir(dir)
const promises = subdirs.map(async (dir) => {
const pid = Number.parseInt(dir, 10)
if (Number.isNaN(pid)) {
return
}
const path = join('/proc', dir, 'cmdline')
try {
const data = await readFile(path, 'utf8')
if (data.includes('headscale')) {
return pid
}
} catch {}
})
const results = await Promise.allSettled(promises)
const pids = []
for (const result of results) {
if (result.status === 'fulfilled' && result.value) {
pids.push(result.value)
}
}
if (pids.length > 1) {
log.error('INTG', 'Found %d Headscale processes: %s',
pids.length,
pids.join(', '),
)
return false
}
if (pids.length === 0) {
log.error('INTG', 'Could not find Headscale process')
return false
}
pid = pids[0]
log.info('INTG', 'Found Headscale process with PID: %d', pid)
return true
} catch {
log.error('INTG', 'Failed to read /proc')
return false
}
},
onAclChange: ({ pid }) => {
if (!pid) {
return
}
log.info('INTG', 'Sending SIGHUP to Headscale')
kill(pid, 'SIGHUP')
},
})