325 lines
7.1 KiB
Go
325 lines
7.1 KiB
Go
package manager
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"git.rootprojects.org/root/serviceman/runner"
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"git.rootprojects.org/root/serviceman/service"
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"golang.org/x/sys/windows/registry"
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)
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var (
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srvLen int
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srvExt = ".json"
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srvSysPath = "/opt/serviceman/etc"
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srvUserPath = ".local/opt/serviceman/etc"
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)
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func init() {
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srvLen = len(srvExt)
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}
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// TODO nab some goodness from https://github.com/takama/daemon
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// TODO system service requires elevated privileges
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// See https://coolaj86.com/articles/golang-and-windows-and-admins-oh-my/
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func install(c *service.Service) (string, error) {
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/*
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// LEAVE THIS DOCUMENTATION HERE
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reg.exe
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/V <value name> - "Telebit"
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/T <data type> - "REG_SZ" - String
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/D <value data>
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/C - case sensitive
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/F <search data??> - not sure...
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// Special Note:
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"/c" is similar to -- (*nix), and required within the data string
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So instead of setting "do.exe --do-arg1 --do-arg2"
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you must set "do.exe /c --do-arg1 --do-arg2"
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vars.telebitNode += '.exe';
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var cmd = 'reg.exe add "HKCU\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run"'
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+ ' /V "Telebit" /t REG_SZ /D '
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+ '"' + things.argv[0] + ' /c ' // something like C:\Program Files (x64)\nodejs\node.exe
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+ [ path.join(__dirname, 'bin/telebitd.js')
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, 'daemon'
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, '--config'
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, path.join(os.homedir(), '.config/telebit/telebitd.yml')
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].join(' ')
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+ '" /F'
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;
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*/
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autorunKey := `SOFTWARE\Microsoft\Windows\CurrentVersion\Run`
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k, _, err := registry.CreateKey(
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registry.CURRENT_USER,
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autorunKey,
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registry.SET_VALUE,
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)
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if err != nil {
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log.Fatal(err)
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}
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defer k.Close()
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// Try to stop before trying to copy the file
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_ = runner.Stop(c)
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args, err := installServiceman(c)
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if nil != err {
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return "", err
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}
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/*
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setArgs := ""
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args := c.Argv
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exec := c.Exec
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bin := c.Interpreter
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if "" != bin {
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// If this is something like node or python,
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// the interpeter must be called as "the main thing"
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// and "the app" must be an argument
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args = append([]string{exec}, args...)
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} else {
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// Otherwise, if "the app" is a true binary,
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// it can be "the main thing"
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bin = exec
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}
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// The final string ends up looking something like one of these:
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// `"C:\Users\aj\.local\opt\appname\appname.js" -p 8080`
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// `"C:\Program Files (x64)\nodejs\node.exe" C:\Users\aj\.local\opt\appname\appname.js -p 8080`
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regSZ := bin + setArgs + strings.Join(c.Argv, " ")
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*/
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regSZ := fmt.Sprintf(`"%s" %s`, args[0], strings.Join(args[1:], " "))
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if len(regSZ) > 260 {
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return "", fmt.Errorf("data value is too long for registry entry")
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}
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// In order for a windows gui program to not show a console,
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// it has to not output any messages?
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//fmt.Println("Set Registry Key:")
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//fmt.Println(autorunKey, c.Title, regSZ)
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k.SetStringValue(c.Title, regSZ)
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err = start(c)
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return "serviceman", err
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}
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func Render(c *service.Service) ([]byte, error) {
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b, err := json.Marshal(c)
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if nil != err {
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return nil, err
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}
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return b, nil
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}
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func start(conf *service.Service) error {
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args := getRunnerArgs(conf)
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args = append(args, "--daemon")
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return Run(args[0], args[1:]...)
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}
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func stop(conf *service.Service) error {
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return runner.Stop(conf)
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}
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func list(c *service.Service) ([]string, []string, []error) {
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var errs []error
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regs, err := listRegistry(c)
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if nil != err {
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errs = append(errs, err)
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}
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cfgs, errors := listConfigs(c)
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if 0 != len(errors) {
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errs = append(errs, errors...)
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}
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managed := []string{}
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for i := range cfgs {
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managed = append(managed, cfgs[i].Name)
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}
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others := []string{}
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for i := range regs {
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reg := regs[i]
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if 0 == len(cfgs) {
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others = append(others, reg)
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continue
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}
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var found bool
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for j := range cfgs {
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cfg := cfgs[j]
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// Registry Value Names are case-insensitive
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if strings.ToLower(reg) == strings.ToLower(cfg.Title) {
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found = true
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}
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}
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if !found {
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others = append(others, reg)
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}
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}
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return managed, others, errs
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}
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func getRunnerArgs(c *service.Service) []string {
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self := os.Args[0]
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debug := ""
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if strings.Contains(self, "debug.exe") {
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debug = "debug."
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}
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smdir := `\opt\serviceman`
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// TODO support service level services (which probably wouldn't need serviceman)
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smdir = filepath.Join(c.Home, ".local", smdir)
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// for now we'll scope the runner to the name of the application
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smbin := filepath.Join(smdir, `bin\serviceman.`+debug+c.Name+`.exe`)
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confpath := filepath.Join(smdir, `etc`)
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conffile := filepath.Join(confpath, c.Name+`.json`)
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return []string{
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smbin,
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"run",
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"--config",
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conffile,
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}
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}
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type winConf struct {
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Filename string `json:"-"`
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Name string `json:"name"`
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Title string `json:"title"`
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}
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func listConfigs(c *service.Service) ([]winConf, []error) {
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var errs []error
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smdir := `\opt\serviceman`
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if !c.System {
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smdir = filepath.Join(c.Home, ".local", smdir)
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}
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confpath := filepath.Join(smdir, `etc`)
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infos, err := ioutil.ReadDir(confpath)
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if nil != err {
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if os.IsNotExist(err) {
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return nil, nil
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}
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errs = append(errs, &ManageError{
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Name: confpath,
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Hint: "Read directory",
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Parent: err,
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})
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return nil, errs
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}
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// TODO report active status
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srvs := []winConf{}
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for i := range infos {
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filename := strings.ToLower(infos[i].Name())
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if len(filename) <= srvLen || !strings.HasSuffix(filename, srvExt) {
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continue
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}
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name := filename[:len(filename)-srvLen]
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b, err := ioutil.ReadFile(filepath.Join(confpath, filename))
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if nil != err {
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errs = append(errs, &ManageError{
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Name: name,
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Hint: "Read file",
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Parent: err,
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})
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continue
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}
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cfg := winConf{Filename: filename}
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err = json.Unmarshal(b, &cfg)
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if nil != err {
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errs = append(errs, &ManageError{
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Name: name,
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Hint: "Parse JSON",
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Parent: err,
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})
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continue
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}
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srvs = append(srvs, cfg)
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}
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return srvs, errs
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}
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func listRegistry(c *service.Service) ([]string, error) {
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autorunKey := `SOFTWARE\Microsoft\Windows\CurrentVersion\Run`
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k, _, err := registry.CreateKey(
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registry.CURRENT_USER,
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autorunKey,
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registry.QUERY_VALUE,
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)
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if err != nil {
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log.Fatal(err)
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}
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defer k.Close()
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return k.ReadValueNames(-1)
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}
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// copies self to install path and returns config path
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func installServiceman(c *service.Service) ([]string, error) {
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// TODO check version and upgrade or dismiss
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self := os.Args[0]
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args := getRunnerArgs(c)
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smbin := args[0]
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conffile := args[len(args)-1]
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if smbin != self {
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err := os.MkdirAll(filepath.Dir(smbin), 0755)
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if nil != err {
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return nil, err
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}
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// Note: self may be the short name, in which case
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// we should just use whatever is closest in the path
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// exec.LookPath will handle this correctly
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self, err = exec.LookPath(self)
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if nil != err {
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return nil, err
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}
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bin, err := ioutil.ReadFile(self)
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if nil != err {
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return nil, err
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}
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err = ioutil.WriteFile(smbin, bin, 0755)
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if nil != err {
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return nil, err
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}
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}
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b, err := Render(c)
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if nil != err {
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// this should be impossible, so we'll just panic
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panic(err)
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}
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err = os.MkdirAll(filepath.Dir(conffile), 0755)
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if nil != err {
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return nil, err
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}
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err = ioutil.WriteFile(conffile, b, 0640)
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if nil != err {
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return nil, err
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}
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return args, nil
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}
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