|
| 1 | +package cmd |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "io" |
| 6 | + "os" |
| 7 | + "os/signal" |
| 8 | + "path/filepath" |
| 9 | + runtimeDebug "runtime/debug" |
| 10 | + "sort" |
| 11 | + "strings" |
| 12 | + "syscall" |
| 13 | + "time" |
| 14 | + |
| 15 | + box "github.com/sagernet/sing-box" |
| 16 | + C "github.com/sagernet/sing-box/constant" |
| 17 | + "github.com/sagernet/sing-box/log" |
| 18 | + "github.com/sagernet/sing-box/option" |
| 19 | + E "github.com/sagernet/sing/common/exceptions" |
| 20 | + "github.com/sagernet/sing/common/json" |
| 21 | + "github.com/sagernet/sing/common/json/badjson" |
| 22 | + |
| 23 | + "github.com/spf13/cobra" |
| 24 | +) |
| 25 | + |
| 26 | +var ( |
| 27 | + globalCtx context.Context |
| 28 | + configPaths []string |
| 29 | + configDirectories []string |
| 30 | +) |
| 31 | +var commandRun = &cobra.Command{ |
| 32 | + Use: "srun", |
| 33 | + Short: "Run singbox service", |
| 34 | + Run: func(cmd *cobra.Command, args []string) { |
| 35 | + err := run() |
| 36 | + if err != nil { |
| 37 | + log.Fatal(err) |
| 38 | + } |
| 39 | + }, |
| 40 | +} |
| 41 | + |
| 42 | +func init() { |
| 43 | + mainCommand.AddCommand(commandRun) |
| 44 | + commandRun.Flags().StringArrayVarP(&configPaths, "config", "c", nil, "set configuration file path") |
| 45 | + commandRun.Flags().StringArrayVarP(&configDirectories, "config-directory", "C", nil, "set configuration directory path") |
| 46 | +} |
| 47 | + |
| 48 | +type OptionsEntry struct { |
| 49 | + content []byte |
| 50 | + path string |
| 51 | + options option.Options |
| 52 | +} |
| 53 | + |
| 54 | +func sreadConfigAt(path string) (*OptionsEntry, error) { |
| 55 | + var ( |
| 56 | + configContent []byte |
| 57 | + err error |
| 58 | + ) |
| 59 | + if path == "stdin" { |
| 60 | + configContent, err = io.ReadAll(os.Stdin) |
| 61 | + } else { |
| 62 | + configContent, err = os.ReadFile(path) |
| 63 | + } |
| 64 | + if err != nil { |
| 65 | + return nil, E.Cause(err, "read config at ", path) |
| 66 | + } |
| 67 | + options, err := json.UnmarshalExtendedContext[option.Options](globalCtx, configContent) |
| 68 | + if err != nil { |
| 69 | + return nil, E.Cause(err, "decode config at ", path) |
| 70 | + } |
| 71 | + return &OptionsEntry{ |
| 72 | + content: configContent, |
| 73 | + path: path, |
| 74 | + options: options, |
| 75 | + }, nil |
| 76 | +} |
| 77 | + |
| 78 | +func readConfig() ([]*OptionsEntry, error) { |
| 79 | + var optionsList []*OptionsEntry |
| 80 | + for _, path := range configPaths { |
| 81 | + optionsEntry, err := sreadConfigAt(path) |
| 82 | + if err != nil { |
| 83 | + return nil, err |
| 84 | + } |
| 85 | + optionsList = append(optionsList, optionsEntry) |
| 86 | + } |
| 87 | + for _, directory := range configDirectories { |
| 88 | + entries, err := os.ReadDir(directory) |
| 89 | + if err != nil { |
| 90 | + return nil, E.Cause(err, "read config directory at ", directory) |
| 91 | + } |
| 92 | + for _, entry := range entries { |
| 93 | + if !strings.HasSuffix(entry.Name(), ".json") || entry.IsDir() { |
| 94 | + continue |
| 95 | + } |
| 96 | + optionsEntry, err := sreadConfigAt(filepath.Join(directory, entry.Name())) |
| 97 | + if err != nil { |
| 98 | + return nil, err |
| 99 | + } |
| 100 | + optionsList = append(optionsList, optionsEntry) |
| 101 | + } |
| 102 | + } |
| 103 | + sort.Slice(optionsList, func(i, j int) bool { |
| 104 | + return optionsList[i].path < optionsList[j].path |
| 105 | + }) |
| 106 | + return optionsList, nil |
| 107 | +} |
| 108 | + |
| 109 | +func readConfigAndMerge() (option.Options, error) { |
| 110 | + optionsList, err := readConfig() |
| 111 | + if err != nil { |
| 112 | + return option.Options{}, err |
| 113 | + } |
| 114 | + if len(optionsList) == 1 { |
| 115 | + return optionsList[0].options, nil |
| 116 | + } |
| 117 | + var mergedMessage json.RawMessage |
| 118 | + for _, options := range optionsList { |
| 119 | + mergedMessage, err = badjson.MergeJSON(globalCtx, options.options.RawMessage, mergedMessage, false) |
| 120 | + if err != nil { |
| 121 | + return option.Options{}, E.Cause(err, "merge config at ", options.path) |
| 122 | + } |
| 123 | + } |
| 124 | + var mergedOptions option.Options |
| 125 | + err = mergedOptions.UnmarshalJSONContext(globalCtx, mergedMessage) |
| 126 | + if err != nil { |
| 127 | + return option.Options{}, E.Cause(err, "unmarshal merged config") |
| 128 | + } |
| 129 | + return mergedOptions, nil |
| 130 | +} |
| 131 | + |
| 132 | +func create() (*box.Box, context.CancelFunc, error) { |
| 133 | + options, err := readConfigAndMerge() |
| 134 | + if err != nil { |
| 135 | + return nil, nil, err |
| 136 | + } |
| 137 | + if disableColor { |
| 138 | + if options.Log == nil { |
| 139 | + options.Log = &option.LogOptions{} |
| 140 | + } |
| 141 | + options.Log.DisableColor = true |
| 142 | + } |
| 143 | + ctx, cancel := context.WithCancel(globalCtx) |
| 144 | + instance, err := box.New(box.Options{ |
| 145 | + Context: ctx, |
| 146 | + Options: options, |
| 147 | + }) |
| 148 | + if err != nil { |
| 149 | + cancel() |
| 150 | + return nil, nil, E.Cause(err, "create service") |
| 151 | + } |
| 152 | + |
| 153 | + osSignals := make(chan os.Signal, 1) |
| 154 | + signal.Notify(osSignals, os.Interrupt, syscall.SIGTERM, syscall.SIGHUP) |
| 155 | + defer func() { |
| 156 | + signal.Stop(osSignals) |
| 157 | + close(osSignals) |
| 158 | + }() |
| 159 | + startCtx, finishStart := context.WithCancel(context.Background()) |
| 160 | + go func() { |
| 161 | + _, loaded := <-osSignals |
| 162 | + if loaded { |
| 163 | + cancel() |
| 164 | + closeMonitor(startCtx) |
| 165 | + } |
| 166 | + }() |
| 167 | + err = instance.Start() |
| 168 | + finishStart() |
| 169 | + if err != nil { |
| 170 | + cancel() |
| 171 | + return nil, nil, E.Cause(err, "start service") |
| 172 | + } |
| 173 | + return instance, cancel, nil |
| 174 | +} |
| 175 | + |
| 176 | +func run() error { |
| 177 | + osSignals := make(chan os.Signal, 1) |
| 178 | + signal.Notify(osSignals, os.Interrupt, syscall.SIGTERM, syscall.SIGHUP) |
| 179 | + defer signal.Stop(osSignals) |
| 180 | + for { |
| 181 | + instance, cancel, err := create() |
| 182 | + if err != nil { |
| 183 | + return err |
| 184 | + } |
| 185 | + runtimeDebug.FreeOSMemory() |
| 186 | + for { |
| 187 | + osSignal := <-osSignals |
| 188 | + if osSignal == syscall.SIGHUP { |
| 189 | + err = check() |
| 190 | + if err != nil { |
| 191 | + log.Error(E.Cause(err, "reload service")) |
| 192 | + continue |
| 193 | + } |
| 194 | + } |
| 195 | + cancel() |
| 196 | + closeCtx, closed := context.WithCancel(context.Background()) |
| 197 | + go closeMonitor(closeCtx) |
| 198 | + err = instance.Close() |
| 199 | + closed() |
| 200 | + if osSignal != syscall.SIGHUP { |
| 201 | + if err != nil { |
| 202 | + log.Error(E.Cause(err, "sing-box did not closed properly")) |
| 203 | + } |
| 204 | + return nil |
| 205 | + } |
| 206 | + break |
| 207 | + } |
| 208 | + } |
| 209 | +} |
| 210 | + |
| 211 | +func closeMonitor(ctx context.Context) { |
| 212 | + time.Sleep(C.FatalStopTimeout) |
| 213 | + select { |
| 214 | + case <-ctx.Done(): |
| 215 | + return |
| 216 | + default: |
| 217 | + } |
| 218 | + log.Fatal("sing-box did not close!") |
| 219 | +} |
0 commit comments