| 113 | } |
| 114 | |
| 115 | func loadConfig() config { |
| 116 | if *dev { |
| 117 | return config{PrivateKey: key.NewNode()} |
| 118 | } |
| 119 | if *configPath == "" { |
| 120 | if os.Getuid() == 0 { |
| 121 | *configPath = "/var/lib/derper/derper.key" |
| 122 | } else { |
| 123 | log.Fatalf("derper: -c <config path> not specified") |
| 124 | } |
| 125 | log.Printf("no config path specified; using %s", *configPath) |
| 126 | } |
| 127 | b, err := os.ReadFile(*configPath) |
| 128 | switch { |
| 129 | case errors.Is(err, os.ErrNotExist): |
| 130 | return writeNewConfig() |
| 131 | case err != nil: |
| 132 | log.Fatal(err) |
| 133 | panic("unreachable") |
| 134 | default: |
| 135 | var cfg config |
| 136 | if err := json.Unmarshal(b, &cfg); err != nil { |
| 137 | log.Fatalf("derper: config: %v", err) |
| 138 | } |
| 139 | return cfg |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | func writeNewConfig() config { |
| 144 | k := key.NewNode() |