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Merge branch 'service-options' of git://github.com/dsheets/AdGuardHome into dsheets-service-options

This commit is contained in:
Andrey Meshkov 2020-09-08 15:27:10 +03:00
parent 22d0341a4c 90ef204d04
commit c826c976af
4 changed files with 573 additions and 101 deletions
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109
home/home.go
View File

@ -126,7 +126,7 @@ func Main(version string, channel string, armVer string) {
}()
if args.serviceControlAction != "" {
handleServiceControlAction(args.serviceControlAction)
handleServiceControlAction(args)
return
}
@ -526,108 +526,25 @@ func cleanupAlways() {
log.Info("Stopped")
}
// command-line arguments
type options struct {
verbose bool // is verbose logging enabled
configFilename string // path to the config file
workDir string // path to the working directory where we will store the filters data and the querylog
bindHost string // host address to bind HTTP server on
bindPort int // port to serve HTTP pages on
logFile string // Path to the log file. If empty, write to stdout. If "syslog", writes to syslog
pidFile string // File name to save PID to
checkConfig bool // Check configuration and exit
disableUpdate bool // If set, don't check for updates
// service control action (see service.ControlAction array + "status" command)
serviceControlAction string
// runningAsService flag is set to true when options are passed from the service runner
runningAsService bool
glinetMode bool // Activate GL-Inet mode
func exitWithError() {
os.Exit(64)
}
// loadOptions reads command line arguments and initializes configuration
func loadOptions() options {
o := options{}
o, f, err := parse(os.Args[0], os.Args[1:])
var printHelp func()
var opts = []struct {
longName string
shortName string
description string
callbackWithValue func(value string)
callbackNoValue func()
}{
{"config", "c", "Path to the config file", func(value string) { o.configFilename = value }, nil},
{"work-dir", "w", "Path to the working directory", func(value string) { o.workDir = value }, nil},
{"host", "h", "Host address to bind HTTP server on", func(value string) { o.bindHost = value }, nil},
{"port", "p", "Port to serve HTTP pages on", func(value string) {
v, err := strconv.Atoi(value)
if err != nil {
panic("Got port that is not a number")
}
o.bindPort = v
}, nil},
{"service", "s", "Service control action: status, install, uninstall, start, stop, restart, reload (configuration)", func(value string) {
o.serviceControlAction = value
}, nil},
{"logfile", "l", "Path to log file. If empty: write to stdout; if 'syslog': write to system log", func(value string) {
o.logFile = value
}, nil},
{"pidfile", "", "Path to a file where PID is stored", func(value string) { o.pidFile = value }, nil},
{"check-config", "", "Check configuration and exit", nil, func() { o.checkConfig = true }},
{"no-check-update", "", "Don't check for updates", nil, func() { o.disableUpdate = true }},
{"verbose", "v", "Enable verbose output", nil, func() { o.verbose = true }},
{"glinet", "", "Run in GL-Inet compatibility mode", nil, func() { o.glinetMode = true }},
{"version", "", "Show the version and exit", nil, func() {
fmt.Println(version())
os.Exit(0)
}},
{"help", "", "Print this help", nil, func() {
printHelp()
os.Exit(64)
}},
}
printHelp = func() {
fmt.Printf("Usage:\n\n")
fmt.Printf("%s [options]\n\n", os.Args[0])
fmt.Printf("Options:\n")
for _, opt := range opts {
val := ""
if opt.callbackWithValue != nil {
val = " VALUE"
}
if opt.shortName != "" {
fmt.Printf(" -%s, %-30s %s\n", opt.shortName, "--"+opt.longName+val, opt.description)
log.Error(err.Error())
_ = printHelp(os.Args[0])
exitWithError()
} else if f != nil {
err = f()
if err != nil {
log.Error(err.Error())
exitWithError()
} else {
fmt.Printf(" %-34s %s\n", "--"+opt.longName+val, opt.description)
}
}
}
for i := 1; i < len(os.Args); i++ {
v := os.Args[i]
knownParam := false
for _, opt := range opts {
if v == "--"+opt.longName || (opt.shortName != "" && v == "-"+opt.shortName) {
if opt.callbackWithValue != nil {
if i+1 >= len(os.Args) {
log.Error("Got %s without argument\n", v)
os.Exit(64)
}
i++
opt.callbackWithValue(os.Args[i])
} else if opt.callbackNoValue != nil {
opt.callbackNoValue()
}
knownParam = true
break
}
}
if !knownParam {
log.Error("unknown option %v\n", v)
printHelp()
os.Exit(64)
os.Exit(0)
}
}

313
home/options.go Normal file
View File

@ -0,0 +1,313 @@
package home
import (
"fmt"
"os"
"strconv"
)
// options passed from command-line arguments
type options struct {
verbose bool // is verbose logging enabled
configFilename string // path to the config file
workDir string // path to the working directory where we will store the filters data and the querylog
bindHost string // host address to bind HTTP server on
bindPort int // port to serve HTTP pages on
logFile string // Path to the log file. If empty, write to stdout. If "syslog", writes to syslog
pidFile string // File name to save PID to
checkConfig bool // Check configuration and exit
disableUpdate bool // If set, don't check for updates
// service control action (see service.ControlAction array + "status" command)
serviceControlAction string
// runningAsService flag is set to true when options are passed from the service runner
runningAsService bool
glinetMode bool // Activate GL-Inet mode
}
// functions used for their side-effects
type effect func() error
type arg struct {
description string // a short, English description of the argument
longName string // the name of the argument used after '--'
shortName string // the name of the argument used after '-'
// only one of updateWithValue, updateNoValue, and effect should be present
updateWithValue func(o options, v string) (options, error) // the mutator for arguments with parameters
updateNoValue func(o options) (options, error) // the mutator for arguments without parameters
effect func(o options, exec string) (f effect, err error) // the side-effect closure generator
serialize func(o options) []string // the re-serialization function back to arguments (return nil for omit)
}
// {type}SliceOrNil functions check their parameter of type {type}
// against its zero value and return nil if the parameter value is
// zero otherwise they return a string slice of the parameter
func stringSliceOrNil(s string) []string {
if s == "" {
return nil
}
return []string{s}
}
func intSliceOrNil(i int) []string {
if i == 0 {
return nil
}
return []string{strconv.Itoa(i)}
}
func boolSliceOrNil(b bool) []string {
if b {
return []string{}
}
return nil
}
var args []arg
var configArg = arg{
"Path to the config file",
"config", "c",
func(o options, v string) (options, error) { o.configFilename = v; return o, nil },
nil,
nil,
func(o options) []string { return stringSliceOrNil(o.configFilename) },
}
var workDirArg = arg{
"Path to the working directory",
"work-dir", "w",
func(o options, v string) (options, error) { o.workDir = v; return o, nil }, nil, nil,
func(o options) []string { return stringSliceOrNil(o.workDir) },
}
var hostArg = arg{
"Host address to bind HTTP server on",
"host", "h",
func(o options, v string) (options, error) { o.bindHost = v; return o, nil }, nil, nil,
func(o options) []string { return stringSliceOrNil(o.bindHost) },
}
var portArg = arg{
"Port to serve HTTP pages on",
"port", "p",
func(o options, v string) (options, error) {
var err error
var p int
minPort, maxPort := 0, 1<<16-1
if p, err = strconv.Atoi(v); err != nil {
err = fmt.Errorf("port '%s' is not a number", v)
} else if p < minPort || p > maxPort {
err = fmt.Errorf("port %d not in range %d - %d", p, minPort, maxPort)
} else {
o.bindPort = p
}
return o, err
}, nil, nil,
func(o options) []string { return intSliceOrNil(o.bindPort) },
}
var serviceArg = arg{
"Service control action: status, install, uninstall, start, stop, restart, reload (configuration)",
"service", "s",
func(o options, v string) (options, error) {
o.serviceControlAction = v
return o, nil
}, nil, nil,
func(o options) []string { return stringSliceOrNil(o.serviceControlAction) },
}
var logfileArg = arg{
"Path to log file. If empty: write to stdout; if 'syslog': write to system log",
"logfile", "l",
func(o options, v string) (options, error) { o.logFile = v; return o, nil }, nil, nil,
func(o options) []string { return stringSliceOrNil(o.logFile) },
}
var pidfileArg = arg{
"Path to a file where PID is stored",
"pidfile", "",
func(o options, v string) (options, error) { o.pidFile = v; return o, nil }, nil, nil,
func(o options) []string { return stringSliceOrNil(o.pidFile) },
}
var checkConfigArg = arg{
"Check configuration and exit",
"check-config", "",
nil, func(o options) (options, error) { o.checkConfig = true; return o, nil }, nil,
func(o options) []string { return boolSliceOrNil(o.checkConfig) },
}
var noCheckUpdateArg = arg{
"Don't check for updates",
"no-check-update", "",
nil, func(o options) (options, error) { o.disableUpdate = true; return o, nil }, nil,
func(o options) []string { return boolSliceOrNil(o.disableUpdate) },
}
var verboseArg = arg{
"Enable verbose output",
"verbose", "v",
nil, func(o options) (options, error) { o.verbose = true; return o, nil }, nil,
func(o options) []string { return boolSliceOrNil(o.verbose) },
}
var glinetArg = arg{
"Run in GL-Inet compatibility mode",
"glinet", "",
nil, func(o options) (options, error) { o.glinetMode = true; return o, nil }, nil,
func(o options) []string { return boolSliceOrNil(o.glinetMode) },
}
var versionArg = arg{
"Show the version and exit",
"version", "",
nil, nil, func(o options, exec string) (effect, error) {
return func() error { fmt.Println(version()); os.Exit(0); return nil }, nil
},
func(o options) []string { return nil },
}
var helpArg = arg{
"Print this help",
"help", "",
nil, nil, func(o options, exec string) (effect, error) {
return func() error { _ = printHelp(exec); os.Exit(64); return nil }, nil
},
func(o options) []string { return nil },
}
func init() {
args = []arg{
configArg,
workDirArg,
hostArg,
portArg,
serviceArg,
logfileArg,
pidfileArg,
checkConfigArg,
noCheckUpdateArg,
verboseArg,
glinetArg,
versionArg,
helpArg,
}
}
func getUsageLines(exec string, args []arg) []string {
usage := []string{
"Usage:",
"",
fmt.Sprintf("%s [options]", exec),
"",
"Options:",
}
for _, arg := range args {
val := ""
if arg.updateWithValue != nil {
val = " VALUE"
}
if arg.shortName != "" {
usage = append(usage, fmt.Sprintf(" -%s, %-30s %s",
arg.shortName,
"--"+arg.longName+val,
arg.description))
} else {
usage = append(usage, fmt.Sprintf(" %-34s %s",
"--"+arg.longName+val,
arg.description))
}
}
return usage
}
func printHelp(exec string) error {
for _, line := range getUsageLines(exec, args) {
_, err := fmt.Println(line)
if err != nil {
return err
}
}
return nil
}
func argMatches(a arg, v string) bool {
return v == "--"+a.longName || (a.shortName != "" && v == "-"+a.shortName)
}
func parse(exec string, ss []string) (o options, f effect, err error) {
for i := 0; i < len(ss); i++ {
v := ss[i]
knownParam := false
for _, arg := range args {
if argMatches(arg, v) {
if arg.updateWithValue != nil {
if i+1 >= len(ss) {
return o, f, fmt.Errorf("got %s without argument", v)
}
i++
o, err = arg.updateWithValue(o, ss[i])
if err != nil {
return
}
} else if arg.updateNoValue != nil {
o, err = arg.updateNoValue(o)
if err != nil {
return
}
} else if arg.effect != nil {
var eff effect
eff, err = arg.effect(o, exec)
if err != nil {
return
}
if eff != nil {
prevf := f
f = func() error {
var err error
if prevf != nil {
err = prevf()
}
if err == nil {
err = eff()
}
return err
}
}
}
knownParam = true
break
}
}
if !knownParam {
return o, f, fmt.Errorf("unknown option %v", v)
}
}
return
}
func shortestFlag(a arg) string {
if a.shortName != "" {
return "-" + a.shortName
}
return "--" + a.longName
}
func serialize(o options) []string {
ss := []string{}
for _, arg := range args {
s := arg.serialize(o)
if s != nil {
ss = append(ss, append([]string{shortestFlag(arg)}, s...)...)
}
}
return ss
}

237
home/options_test.go Normal file
View File

@ -0,0 +1,237 @@
package home
import (
"fmt"
"testing"
)
func testParseOk(t *testing.T, ss ...string) options {
o, _, err := parse("", ss)
if err != nil {
t.Fatal(err.Error())
}
return o
}
func testParseErr(t *testing.T, descr string, ss ...string) {
_, _, err := parse("", ss)
if err == nil {
t.Fatalf("expected an error because %s but no error returned", descr)
}
}
func testParseParamMissing(t *testing.T, param string) {
testParseErr(t, fmt.Sprintf("%s parameter missing", param), param)
}
func TestParseVerbose(t *testing.T) {
if testParseOk(t).verbose {
t.Fatal("empty is not verbose")
}
if !testParseOk(t, "-v").verbose {
t.Fatal("-v is verbose")
}
if !testParseOk(t, "--verbose").verbose {
t.Fatal("--verbose is verbose")
}
}
func TestParseConfigFilename(t *testing.T) {
if testParseOk(t).configFilename != "" {
t.Fatal("empty is no config filename")
}
if testParseOk(t, "-c", "path").configFilename != "path" {
t.Fatal("-c is config filename")
}
testParseParamMissing(t, "-c")
if testParseOk(t, "--config", "path").configFilename != "path" {
t.Fatal("--configFilename is config filename")
}
testParseParamMissing(t, "--config")
}
func TestParseWorkDir(t *testing.T) {
if testParseOk(t).workDir != "" {
t.Fatal("empty is no work dir")
}
if testParseOk(t, "-w", "path").workDir != "path" {
t.Fatal("-w is work dir")
}
testParseParamMissing(t, "-w")
if testParseOk(t, "--work-dir", "path").workDir != "path" {
t.Fatal("--work-dir is work dir")
}
testParseParamMissing(t, "--work-dir")
}
func TestParseBindHost(t *testing.T) {
if testParseOk(t).bindHost != "" {
t.Fatal("empty is no host")
}
if testParseOk(t, "-h", "addr").bindHost != "addr" {
t.Fatal("-h is host")
}
testParseParamMissing(t, "-h")
if testParseOk(t, "--host", "addr").bindHost != "addr" {
t.Fatal("--host is host")
}
testParseParamMissing(t, "--host")
}
func TestParseBindPort(t *testing.T) {
if testParseOk(t).bindPort != 0 {
t.Fatal("empty is port 0")
}
if testParseOk(t, "-p", "65535").bindPort != 65535 {
t.Fatal("-p is port")
}
testParseParamMissing(t, "-p")
if testParseOk(t, "--port", "65535").bindPort != 65535 {
t.Fatal("--port is port")
}
testParseParamMissing(t, "--port")
}
func TestParseBindPortBad(t *testing.T) {
testParseErr(t, "not an int", "-p", "x")
testParseErr(t, "hex not supported", "-p", "0x100")
testParseErr(t, "port negative", "-p", "-1")
testParseErr(t, "port too high", "-p", "65536")
testParseErr(t, "port too high", "-p", "4294967297") // 2^32 + 1
testParseErr(t, "port too high", "-p", "18446744073709551617") // 2^64 + 1
}
func TestParseLogfile(t *testing.T) {
if testParseOk(t).logFile != "" {
t.Fatal("empty is no log file")
}
if testParseOk(t, "-l", "path").logFile != "path" {
t.Fatal("-l is log file")
}
if testParseOk(t, "--logfile", "path").logFile != "path" {
t.Fatal("--logfile is log file")
}
}
func TestParsePidfile(t *testing.T) {
if testParseOk(t).pidFile != "" {
t.Fatal("empty is no pid file")
}
if testParseOk(t, "--pidfile", "path").pidFile != "path" {
t.Fatal("--pidfile is pid file")
}
}
func TestParseCheckConfig(t *testing.T) {
if testParseOk(t).checkConfig {
t.Fatal("empty is not check config")
}
if !testParseOk(t, "--check-config").checkConfig {
t.Fatal("--check-config is check config")
}
}
func TestParseDisableUpdate(t *testing.T) {
if testParseOk(t).disableUpdate {
t.Fatal("empty is not disable update")
}
if !testParseOk(t, "--no-check-update").disableUpdate {
t.Fatal("--no-check-update is disable update")
}
}
func TestParseService(t *testing.T) {
if testParseOk(t).serviceControlAction != "" {
t.Fatal("empty is no service command")
}
if testParseOk(t, "-s", "command").serviceControlAction != "command" {
t.Fatal("-s is service command")
}
if testParseOk(t, "--service", "command").serviceControlAction != "command" {
t.Fatal("--service is service command")
}
}
func TestParseGLInet(t *testing.T) {
if testParseOk(t).glinetMode {
t.Fatal("empty is not GL-Inet mode")
}
if !testParseOk(t, "--glinet").glinetMode {
t.Fatal("--glinet is GL-Inet mode")
}
}
func TestParseUnknown(t *testing.T) {
testParseErr(t, "unknown word", "x")
testParseErr(t, "unknown short", "-x")
testParseErr(t, "unknown long", "--x")
testParseErr(t, "unknown triple", "---x")
testParseErr(t, "unknown plus", "+x")
testParseErr(t, "unknown dash", "-")
}
func testSerialize(t *testing.T, o options, ss ...string) {
result := serialize(o)
if len(result) != len(ss) {
t.Fatalf("expected %s but got %s", ss, result)
}
for i, r := range result {
if r != ss[i] {
t.Fatalf("expected %s but got %s", ss, result)
}
}
}
func TestSerializeEmpty(t *testing.T) {
testSerialize(t, options{})
}
func TestSerializeConfigFilename(t *testing.T) {
testSerialize(t, options{configFilename: "path"}, "-c", "path")
}
func TestSerializeWorkDir(t *testing.T) {
testSerialize(t, options{workDir: "path"}, "-w", "path")
}
func TestSerializeBindHost(t *testing.T) {
testSerialize(t, options{bindHost: "addr"}, "-h", "addr")
}
func TestSerializeBindPort(t *testing.T) {
testSerialize(t, options{bindPort: 666}, "-p", "666")
}
func TestSerializeLogfile(t *testing.T) {
testSerialize(t, options{logFile: "path"}, "-l", "path")
}
func TestSerializePidfile(t *testing.T) {
testSerialize(t, options{pidFile: "path"}, "--pidfile", "path")
}
func TestSerializeCheckConfig(t *testing.T) {
testSerialize(t, options{checkConfig: true}, "--check-config")
}
func TestSerializeDisableUpdate(t *testing.T) {
testSerialize(t, options{disableUpdate: true}, "--no-check-update")
}
func TestSerializeService(t *testing.T) {
testSerialize(t, options{serviceControlAction: "run"}, "-s", "run")
}
func TestSerializeGLInet(t *testing.T) {
testSerialize(t, options{glinetMode: true}, "--glinet")
}
func TestSerializeMultiple(t *testing.T) {
testSerialize(t, options{
serviceControlAction: "run",
configFilename: "config",
workDir: "work",
pidFile: "pid",
disableUpdate: true,
}, "-c", "config", "-w", "work", "-s", "run", "--pidfile", "pid", "--no-check-update")
}

13
home/service.go
View File

@ -24,12 +24,14 @@ const (
// Represents the program that will be launched by a service or daemon
type program struct {
opts options
}
// Start should quickly start the program
func (p *program) Start(s service.Service) error {
// Start should not block. Do the actual work async.
args := options{runningAsService: true}
args := p.opts
args.runningAsService = true
go run(args)
return nil
}
@ -125,7 +127,8 @@ func sendSigReload() {
// run - this is a special command that is not supposed to be used directly
// it is specified when we register a service, and it indicates to the app
// that it is being run as a service/daemon.
func handleServiceControlAction(action string) {
func handleServiceControlAction(opts options) {
action := opts.serviceControlAction
log.Printf("Service control action: %s", action)
if action == "reload" {
@ -137,15 +140,17 @@ func handleServiceControlAction(action string) {
if err != nil {
log.Fatal("Unable to find the path to the current directory")
}
runOpts := opts
runOpts.serviceControlAction = "run"
svcConfig := &service.Config{
Name: serviceName,
DisplayName: serviceDisplayName,
Description: serviceDescription,
WorkingDirectory: pwd,
Arguments: []string{"-s", "run"},
Arguments: serialize(runOpts),
}
configureService(svcConfig)
prg := &program{}
prg := &program{runOpts}
s, err := service.New(prg, svcConfig)
if err != nil {
log.Fatal(err)