rmmagent/agent/agent_unix.go

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//go:build !windows
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// +build !windows
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/*
Copyright 2022 AmidaWare LLC.
Licensed under the Tactical RMM License Version 1.0 (the License).
You may only use the Licensed Software in accordance with the License.
A copy of the License is available at:
https://license.tacticalrmm.com
*/
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package agent
import (
"bufio"
"fmt"
"os"
"path/filepath"
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"runtime"
"strconv"
"strings"
"syscall"
"time"
rmm "github.com/amidaware/rmmagent/shared"
ps "github.com/elastic/go-sysinfo"
"github.com/go-resty/resty/v2"
"github.com/jaypipes/ghw"
"github.com/kardianos/service"
"github.com/shirou/gopsutil/v3/cpu"
"github.com/shirou/gopsutil/v3/disk"
psHost "github.com/shirou/gopsutil/v3/host"
"github.com/spf13/viper"
trmm "github.com/wh1te909/trmm-shared"
)
func ShowStatus(version string) {
fmt.Println(version)
}
func (a *Agent) GetDisks() []trmm.Disk {
ret := make([]trmm.Disk, 0)
partitions, err := disk.Partitions(false)
if err != nil {
a.Logger.Debugln(err)
return ret
}
for _, p := range partitions {
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if strings.Contains(p.Device, "dev/loop") || strings.Contains(p.Device, "devfs") {
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continue
}
usage, err := disk.Usage(p.Mountpoint)
if err != nil {
a.Logger.Debugln(err)
continue
}
d := trmm.Disk{
Device: p.Device,
Fstype: p.Fstype,
Total: ByteCountSI(usage.Total),
Used: ByteCountSI(usage.Used),
Free: ByteCountSI(usage.Free),
Percent: int(usage.UsedPercent),
}
ret = append(ret, d)
}
return ret
}
func (a *Agent) SystemRebootRequired() (bool, error) {
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// deb
paths := [2]string{"/var/run/reboot-required", "/run/reboot-required"}
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for _, p := range paths {
if trmm.FileExists(p) {
return true, nil
}
}
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// rhel
bins := [2]string{"/usr/bin/needs-restarting", "/bin/needs-restarting"}
for _, bin := range bins {
if trmm.FileExists(bin) {
opts := a.NewCMDOpts()
// https://man7.org/linux/man-pages/man1/needs-restarting.1.html
// -r Only report whether a full reboot is required (exit code 1) or not (exit code 0).
opts.Command = fmt.Sprintf("%s -r", bin)
out := a.CmdV2(opts)
if out.Status.Error != nil {
a.Logger.Debugln("SystemRebootRequired(): ", out.Status.Error.Error())
continue
}
if out.Status.Exit == 1 {
return true, nil
}
return false, nil
}
}
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return false, nil
}
func (a *Agent) LoggedOnUser() string {
var ret string
users, err := psHost.Users()
if err != nil {
return ret
}
// return the first logged in user
for _, user := range users {
if user.User != "" {
ret = user.User
break
}
}
return ret
}
func (a *Agent) osString() string {
h, err := psHost.Info()
if err != nil {
return "error getting host info"
}
return fmt.Sprintf("%s %s %s %s", strings.Title(h.Platform), h.PlatformVersion, h.KernelArch, h.KernelVersion)
}
func NewAgentConfig() *rmm.AgentConfig {
viper.SetConfigName("tacticalagent")
viper.SetConfigType("json")
viper.AddConfigPath("/etc/")
viper.AddConfigPath(".")
err := viper.ReadInConfig()
if err != nil {
return &rmm.AgentConfig{}
}
agentpk := viper.GetString("agentpk")
pk, _ := strconv.Atoi(agentpk)
ret := &rmm.AgentConfig{
BaseURL: viper.GetString("baseurl"),
AgentID: viper.GetString("agentid"),
APIURL: viper.GetString("apiurl"),
Token: viper.GetString("token"),
AgentPK: agentpk,
PK: pk,
Cert: viper.GetString("cert"),
Proxy: viper.GetString("proxy"),
CustomMeshDir: viper.GetString("meshdir"),
NatsProxyPath: viper.GetString("natsproxypath"),
NatsProxyPort: viper.GetString("natsproxyport"),
NatsStandardPort: viper.GetString("natsstandardport"),
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NatsPingInterval: viper.GetInt("natspinginterval"),
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}
return ret
}
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func (a *Agent) RunScript(code string, shell string, args []string, timeout int, runasuser bool, envVars []string) (stdout, stderr string, exitcode int, e error) {
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code = removeWinNewLines(code)
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content := []byte(code)
f, err := createTmpFile()
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if err != nil {
a.Logger.Errorln("RunScript createTmpFile()", err)
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return "", err.Error(), 85, err
}
defer os.Remove(f.Name())
if _, err := f.Write(content); err != nil {
a.Logger.Errorln(err)
return "", err.Error(), 85, err
}
if err := f.Close(); err != nil {
a.Logger.Errorln(err)
return "", err.Error(), 85, err
}
if err := os.Chmod(f.Name(), 0770); err != nil {
a.Logger.Errorln(err)
return "", err.Error(), 85, err
}
opts := a.NewCMDOpts()
opts.IsScript = true
opts.Shell = f.Name()
opts.Args = args
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opts.EnvVars = envVars
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opts.Timeout = time.Duration(timeout)
out := a.CmdV2(opts)
retError := ""
if out.Status.Error != nil {
retError += CleanString(out.Status.Error.Error())
retError += "\n"
}
if len(out.Stderr) > 0 {
retError += out.Stderr
}
return out.Stdout, retError, out.Status.Exit, nil
}
func SetDetached() *syscall.SysProcAttr {
return &syscall.SysProcAttr{Setpgid: true}
}
func (a *Agent) seEnforcing() bool {
opts := a.NewCMDOpts()
opts.Command = "getenforce"
out := a.CmdV2(opts)
return out.Status.Exit == 0 && strings.Contains(out.Stdout, "Enforcing")
}
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func (a *Agent) AgentUpdate(url, inno, version string) {
self, err := os.Executable()
if err != nil {
a.Logger.Errorln("AgentUpdate() os.Executable():", err)
return
}
f, err := createTmpFile()
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if err != nil {
a.Logger.Errorln("AgentUpdate createTmpFile()", err)
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return
}
defer os.Remove(f.Name())
a.Logger.Infof("Agent updating from %s to %s", a.Version, version)
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a.Logger.Debugln("Downloading agent update from", url)
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rClient := resty.New()
rClient.SetCloseConnection(true)
rClient.SetTimeout(15 * time.Minute)
rClient.SetDebug(a.Debug)
if len(a.Proxy) > 0 {
rClient.SetProxy(a.Proxy)
}
r, err := rClient.R().SetOutput(f.Name()).Get(url)
if err != nil {
a.Logger.Errorln("AgentUpdate() download:", err)
f.Close()
return
}
if r.IsError() {
a.Logger.Errorln("AgentUpdate() status code:", r.StatusCode())
f.Close()
return
}
f.Close()
os.Chmod(f.Name(), 0755)
err = os.Rename(f.Name(), self)
if err != nil {
a.Logger.Debugln("Detected /tmp on different filesystem")
// rename does not work when src and dest are on different filesystems
// so we need to manually copy it to the same fs then rename it
cwd, err := os.Getwd()
if err != nil {
a.Logger.Errorln("AgentUpdate() os.Getwd():", err)
return
}
// create a tmpfile in same fs as agent
tmpfile := filepath.Join(cwd, GenerateAgentID())
defer os.Remove(tmpfile)
a.Logger.Debugln("Copying tmpfile from", f.Name(), "to", tmpfile)
cperr := copyFile(f.Name(), tmpfile)
if cperr != nil {
a.Logger.Errorln("AgentUpdate() copyFile:", cperr)
return
}
os.Chmod(tmpfile, 0755)
rerr := os.Rename(tmpfile, self)
if rerr != nil {
a.Logger.Errorln("AgentUpdate() os.Rename():", rerr)
return
}
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}
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if runtime.GOOS == "linux" && a.seEnforcing() {
se := a.NewCMDOpts()
se.Command = fmt.Sprintf("restorecon -rv %s", self)
out := a.CmdV2(se)
a.Logger.Debugln("%+v\n", out)
}
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opts := a.NewCMDOpts()
opts.Detached = true
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switch runtime.GOOS {
case "linux":
opts.Command = "systemctl restart tacticalagent.service"
case "darwin":
opts.Command = "launchctl kickstart -k system/tacticalagent"
default:
return
}
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a.CmdV2(opts)
}
func (a *Agent) AgentUninstall(code string) {
f, err := createTmpFile()
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if err != nil {
a.Logger.Errorln("AgentUninstall createTmpFile():", err)
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return
}
f.Write([]byte(code))
f.Close()
os.Chmod(f.Name(), 0770)
opts := a.NewCMDOpts()
opts.IsScript = true
opts.Shell = f.Name()
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if runtime.GOOS == "linux" {
opts.Args = []string{"uninstall"}
}
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opts.Detached = true
a.CmdV2(opts)
}
func (a *Agent) NixMeshNodeID() string {
var meshNodeID string
meshSuccess := false
a.Logger.Debugln("Getting mesh node id")
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if !trmm.FileExists(a.MeshSystemEXE) {
a.Logger.Debugln(a.MeshSystemEXE, "does not exist. Skipping.")
return ""
}
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opts := a.NewCMDOpts()
opts.IsExecutable = true
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opts.Shell = a.MeshSystemEXE
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opts.Command = "-nodeid"
for !meshSuccess {
out := a.CmdV2(opts)
meshNodeID = out.Stdout
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a.Logger.Debugln("Stdout:", out.Stdout)
a.Logger.Debugln("Stderr:", out.Stderr)
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if meshNodeID == "" {
time.Sleep(1 * time.Second)
continue
} else if strings.Contains(strings.ToLower(meshNodeID), "graphical version") || strings.Contains(strings.ToLower(meshNodeID), "zenity") {
time.Sleep(1 * time.Second)
continue
}
meshSuccess = true
}
return meshNodeID
}
func (a *Agent) getMeshNodeID() (string, error) {
return a.NixMeshNodeID(), nil
}
func (a *Agent) RecoverMesh() {
a.Logger.Infoln("Attempting mesh recovery")
opts := a.NewCMDOpts()
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def := "systemctl restart meshagent.service"
switch runtime.GOOS {
case "linux":
opts.Command = def
case "darwin":
opts.Command = "launchctl kickstart -k system/meshagent"
default:
opts.Command = def
}
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a.CmdV2(opts)
a.SyncMeshNodeID()
}
func (a *Agent) GetWMIInfo() map[string]interface{} {
wmiInfo := make(map[string]interface{})
ips := make([]string, 0)
disks := make([]string, 0)
cpus := make([]string, 0)
gpus := make([]string, 0)
// local ips
host, err := ps.Host()
if err != nil {
a.Logger.Errorln("GetWMIInfo() ps.Host()", err)
} else {
for _, ip := range host.Info().IPs {
if strings.Contains(ip, "127.0.") || strings.Contains(ip, "::1/128") {
continue
}
ips = append(ips, ip)
}
}
wmiInfo["local_ips"] = ips
// disks
block, err := ghw.Block(ghw.WithDisableWarnings())
if err != nil {
a.Logger.Errorln("ghw.Block()", err)
} else {
for _, disk := range block.Disks {
if disk.IsRemovable || strings.Contains(disk.Name, "ram") {
continue
}
ret := fmt.Sprintf("%s %s %s %s %s %s", disk.Vendor, disk.Model, disk.StorageController, disk.DriveType, disk.Name, ByteCountSI(disk.SizeBytes))
ret = strings.TrimSpace(strings.ReplaceAll(ret, "unknown", ""))
disks = append(disks, ret)
}
}
wmiInfo["disks"] = disks
// cpus
cpuInfo, err := cpu.Info()
if err != nil {
a.Logger.Errorln("cpu.Info()", err)
} else {
if len(cpuInfo) > 0 {
if cpuInfo[0].ModelName != "" {
cpus = append(cpus, cpuInfo[0].ModelName)
}
}
}
wmiInfo["cpus"] = cpus
// make/model
wmiInfo["make_model"] = ""
chassis, err := ghw.Chassis(ghw.WithDisableWarnings())
if err != nil {
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a.Logger.Debugln("ghw.Chassis()", err)
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} else {
if chassis.Vendor != "" || chassis.Version != "" {
wmiInfo["make_model"] = fmt.Sprintf("%s %s", chassis.Vendor, chassis.Version)
}
}
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if runtime.GOOS == "darwin" {
opts := a.NewCMDOpts()
opts.Command = "sysctl hw.model"
out := a.CmdV2(opts)
wmiInfo["make_model"] = strings.ReplaceAll(out.Stdout, "hw.model: ", "")
}
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// gfx cards
gpu, err := ghw.GPU(ghw.WithDisableWarnings())
if err != nil {
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a.Logger.Debugln("ghw.GPU()", err)
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} else {
for _, i := range gpu.GraphicsCards {
if i.DeviceInfo != nil {
ret := fmt.Sprintf("%s %s", i.DeviceInfo.Vendor.Name, i.DeviceInfo.Product.Name)
gpus = append(gpus, ret)
}
}
}
wmiInfo["gpus"] = gpus
// temp hack for ARM cpu/make/model if rasp pi
var makeModel string
if strings.Contains(runtime.GOARCH, "arm") {
file, _ := os.Open("/proc/cpuinfo")
scanner := bufio.NewScanner(file)
for scanner.Scan() {
if strings.Contains(strings.ToLower(scanner.Text()), "raspberry") {
model := strings.Split(scanner.Text(), ":")
if len(model) == 2 {
makeModel = strings.TrimSpace(model[1])
break
}
}
}
}
if len(cpus) == 0 {
wmiInfo["cpus"] = []string{makeModel}
}
if makeModel != "" && (wmiInfo["make_model"] == "" || wmiInfo["make_model"] == "unknown unknown") {
wmiInfo["make_model"] = makeModel
}
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if len(gpus) == 1 && gpus[0] == "unknown unknown" {
wmiInfo["gpus"] = ""
}
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return wmiInfo
}
// windows only below TODO add into stub file
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func (a *Agent) GetAgentCheckInConfig(ret AgentCheckInConfig) AgentCheckInConfig {
return ret
}
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func (a *Agent) PlatVer() (string, error) { return "", nil }
func (a *Agent) SendSoftware() {}
func (a *Agent) UninstallCleanup() {}
func (a *Agent) RunMigrations() {}
func GetServiceStatus(name string) (string, error) { return "", nil }
func (a *Agent) GetPython(force bool) {}
type SchedTask struct{ Name string }
func (a *Agent) PatchMgmnt(enable bool) error { return nil }
func (a *Agent) CreateSchedTask(st SchedTask) (bool, error) { return false, nil }
func DeleteSchedTask(name string) error { return nil }
func ListSchedTasks() []string { return []string{} }
func (a *Agent) GetEventLog(logName string, searchLastDays int) []rmm.EventLogMsg {
return []rmm.EventLogMsg{}
}
func (a *Agent) GetServiceDetail(name string) trmm.WindowsService { return trmm.WindowsService{} }
func (a *Agent) ControlService(name, action string) rmm.WinSvcResp {
return rmm.WinSvcResp{Success: false, ErrorMsg: "/na"}
}
func (a *Agent) EditService(name, startupType string) rmm.WinSvcResp {
return rmm.WinSvcResp{Success: false, ErrorMsg: "/na"}
}
func (a *Agent) GetInstalledSoftware() []trmm.WinSoftwareList { return []trmm.WinSoftwareList{} }
func (a *Agent) ChecksRunning() bool { return false }
func (a *Agent) RunTask(id int) error { return nil }
func (a *Agent) InstallChoco() {}
func (a *Agent) InstallWithChoco(name string) (string, error) { return "", nil }
func (a *Agent) GetWinUpdates() {}
func (a *Agent) InstallUpdates(guids []string) {}
func (a *Agent) installMesh(meshbin, exe, proxy string) (string, error) {
return "not implemented", nil
}
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func CMDShell(shell string, cmdArgs []string, command string, timeout int, detached bool, runasuser bool) (output [2]string, e error) {
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return [2]string{"", ""}, nil
}
func CMD(exe string, args []string, timeout int, detached bool) (output [2]string, e error) {
return [2]string{"", ""}, nil
}
func (a *Agent) GetServices() []trmm.WindowsService { return []trmm.WindowsService{} }
func (a *Agent) Start(_ service.Service) error { return nil }
func (a *Agent) Stop(_ service.Service) error { return nil }
func (a *Agent) InstallService() error { return nil }