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// Copyright 2022 Jo-Philipp Wich <jo@mein.io>
// Licensed to the public under the Apache License 2.0.
import { basename, readlink, readfile, open, popen, stat, glob } from 'fs';
export function process_list() {
const top = popen('/bin/busybox top -bn1');
let line, list = [];
for (let line = top.read('line'); length(line); line = top.read('line')) {
let m = match(trim(line), /^([0-9]+) +([0-9]+) +(.+) +([RSDZTWI][<NW ][<N ]) +([0-9]+m?) +([0-9]+%) +([0-9]+%) +(.+)$/);
if (m && m[8] != '/bin/busybox top -bn1') {
push(list, {
PID: m[1],
PPID: m[2],
USER: trim(m[3]),
STAT: m[4],
VSZ: m[5],
'%MEM': m[6],
'%CPU': m[7],
COMMAND: m[8]
});
}
}
top.close();
return list;
};
export function conntrack_list(callback) {
const etcpr = open('/etc/protocols');
const protos = {};
if (etcpr) {
for (let line = etcpr.read('line'); length(line); line = etcpr.read('line')) {
const m = match(line, /^([^# \t\n]+)\s+([0-9]+)\s+/);
if (m)
protos[m[2]] = m[1];
}
etcpr.close();
}
const nfct = open('/proc/net/nf_conntrack', 'r');
let connt;
if (nfct) {
for (let line = nfct.read('line'); length(line); line = nfct.read('line')) {
let m = match(line, /^(ipv[46]) +([0-9]+) +\S+ +([0-9]+)( +.+)\n$/);
if (!m)
continue;
let fam = m[1];
let l3 = m[2];
let l4 = m[3];
let tuples = m[4];
let timeout = null;
m = match(tuples, /^ +([0-9]+)( .+)$/);
if (m) {
timeout = m[1];
tuples = m[2];
}
if (index(tuples, 'TIME_WAIT') !== -1)
continue;
let e = {
bytes: 0,
packets: 0,
layer3: fam,
layer4: protos[l4] ?? 'unknown',
timeout: +timeout
};
for (let kv in match(tuples, / (\w+)=(\S+)/g)) {
switch (kv[1]) {
case 'bytes':
case 'packets':
e[kv[1]] += +kv[2];
break;
case 'src':
case 'dst':
e[kv[1]] ??= arrtoip(iptoarr(kv[2]));
break;
case 'sport':
case 'dport':
e[kv[1]] ??= +kv[2];
break;
default:
e[kv[1]] = kv[2];
}
}
if (callback)
callback(e);
else
push(connt ??= [], e);
}
nfct.close();
}
return callback ? true : (connt ?? []);
};
export function init_list() {
return map(filter(glob('/etc/init.d/*'), path => {
const s = stat(path);
return s?.type == 'file' && s?.perm?.user_exec;
}), basename);
};
export function init_index(name) {
const src = readfile(`/etc/init.d/${basename(name)}`, 2048);
const idx = [];
for (let m in match(src, /^[[:space:]]*(START|STOP)=('[0-9][0-9]'|"[0-9][0-9]"|[0-9][0-9])[[:space:]]*$/gs)) {
switch (m[1]) {
case 'START': idx[0] = +trim(m[2], '"\''); break;
case 'STOP': idx[1] = +trim(m[2], '"\''); break;
}
}
return length(idx) ? idx : null;
};
export function init_enabled(name) {
for (let path in glob(`/etc/rc.d/[SK][0-9][0-9]${basename(name)}`)) {
const ln = readlink(path);
const s1 = stat(index(ln, '/') == 0 ? ln : `/etc/rc.d/${ln}`);
const s2 = stat(`/etc/init.d/${basename(name)}`);
if (s1?.inode == s2?.inode && s1?.type == 'file' && s1?.perm?.user_exec)
return true;
}
return false;
};
export function init_action(name, action) {
const s = stat(`/etc/init.d/${basename(name)}`);
if (s?.type != 'file' || s?.user_exec == false)
return false;
return system(`env -i /etc/init.d/${basename(name)} ${action} >/dev/null`);
};
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