|
| 1 | +// This file is part of arduino-router |
| 2 | +// |
| 3 | +// Copyright 2025 ARDUINO SA (http://www.arduino.cc/) |
| 4 | +// |
| 5 | +// This software is released under the GNU General Public License version 3, |
| 6 | +// which covers the main part of arduino-router |
| 7 | +// The terms of this license can be found at: |
| 8 | +// https://www.gnu.org/licenses/gpl-3.0.en.html |
| 9 | +// |
| 10 | +// You can be released from the requirements of the above licenses by purchasing |
| 11 | +// a commercial license. Buying such a license is mandatory if you want to |
| 12 | +// modify or otherwise use the software for commercial activities involving the |
| 13 | +// Arduino software without disclosing the source code of your own applications. |
| 14 | +// To purchase a commercial license, send an email to license@arduino.cc. |
| 15 | + |
| 16 | +package main |
| 17 | + |
| 18 | +import ( |
| 19 | + "context" |
| 20 | + "fmt" |
| 21 | + "net" |
| 22 | + "os" |
| 23 | + "strconv" |
| 24 | + "strings" |
| 25 | + |
| 26 | + "github.com/arduino/arduino-router/msgpackrpc" |
| 27 | + |
| 28 | + "github.com/spf13/cobra" |
| 29 | + "gopkg.in/yaml.v3" |
| 30 | +) |
| 31 | + |
| 32 | +func main() { |
| 33 | + var notification bool |
| 34 | + var server string |
| 35 | + appname := os.Args[0] |
| 36 | + cmd := cobra.Command{ |
| 37 | + Short: "Send a MsgPack RPC REQUEST or NOTIFICATION.", |
| 38 | + Use: appname + " [flags] <METHOD> [<ARG> [<ARG> ...]]\n\n" + |
| 39 | + "Send REQUEST: " + appname + " [-s server_addr] <METHOD> [<ARG> [<ARG> ...]]\n" + |
| 40 | + "Send NOTIFICATION: " + appname + " [-s server_addr] -n <METHOD> [<ARG> [<ARG> ...]]\n\n" + |
| 41 | + " <METHOD> is the method name to request/notify,\n" + |
| 42 | + " <ARG> are the arguments to pass to the method:\n" + |
| 43 | + " - Use 'true', 'false' for boolean\n" + |
| 44 | + " - Use 'null' for null.\n" + |
| 45 | + " - Use integer values directly (e.g., 42).\n" + |
| 46 | + " - Use the 'f32:' or 'f64:' prefix for floating point values (e.g. f32:3.14159).\n" + |
| 47 | + " - Use '[' and ']' to start and end an array.\n" + |
| 48 | + " - Use '{' and '}' to start and end a map.\n" + |
| 49 | + " Keys and values should be listed in order { KEY1 VAL1 KEY2 VAL2 }.\n" + |
| 50 | + " - Any other value is treated as a string, or you may use the 'str:' prefix\n" + |
| 51 | + " explicitly in case of ambiguity (e.g. str:42)", |
| 52 | + Run: func(cmd *cobra.Command, cliArgs []string) { |
| 53 | + // Compose method and arguments |
| 54 | + args, rest, err := composeArgs(append(append([]string{"["}, cliArgs[1:]...), "]")) |
| 55 | + if err != nil { |
| 56 | + fmt.Println("Invalid arguments:", err) |
| 57 | + os.Exit(1) |
| 58 | + } |
| 59 | + if len(rest) > 0 { |
| 60 | + fmt.Println("Invalid arguments: extra data:", rest) |
| 61 | + os.Exit(1) |
| 62 | + } |
| 63 | + if _, ok := args.([]any); !ok { |
| 64 | + fmt.Println("Invalid arguments: expected array") |
| 65 | + os.Exit(1) |
| 66 | + } |
| 67 | + |
| 68 | + // Perfom request send |
| 69 | + ctx := cmd.Context() |
| 70 | + method := cliArgs[0] |
| 71 | + rpcResp, rpcErr, err := send(ctx, server, method, args.([]any), notification) |
| 72 | + if err != nil { |
| 73 | + fmt.Println("Error sending request:", err) |
| 74 | + os.Exit(1) |
| 75 | + } |
| 76 | + |
| 77 | + yamlEncoder := yaml.NewEncoder(os.Stdout) |
| 78 | + yamlEncoder.SetIndent(2) |
| 79 | + if notification { |
| 80 | + fmt.Printf("Sending notification for method '%s', with parameters:\n", method) |
| 81 | + } else { |
| 82 | + fmt.Printf("Sending request for method '%s', with parameters:\n", method) |
| 83 | + } |
| 84 | + _ = yamlEncoder.Encode(args) |
| 85 | + if !notification { |
| 86 | + if rpcErr != nil { |
| 87 | + fmt.Println("Got RPC error response:") |
| 88 | + _ = yamlEncoder.Encode(rpcErr) |
| 89 | + } |
| 90 | + if rpcResp != nil { |
| 91 | + fmt.Println("Got RPC response:") |
| 92 | + _ = yamlEncoder.Encode(rpcResp) |
| 93 | + } |
| 94 | + } |
| 95 | + }, |
| 96 | + Args: cobra.MinimumNArgs(1), |
| 97 | + SilenceUsage: true, |
| 98 | + } |
| 99 | + cmd.Flags().BoolVarP( |
| 100 | + ¬ification, "notification", "n", false, |
| 101 | + "Send a NOTIFICATION instead of a CALL") |
| 102 | + cmd.Flags().StringVarP( |
| 103 | + &server, "server", "s", "/var/run/arduino-router.sock", |
| 104 | + "Server address (file path for unix socket)") |
| 105 | + if err := cmd.Execute(); err != nil { |
| 106 | + fmt.Printf("Use: %s -h for help.\n", appname) |
| 107 | + os.Exit(1) |
| 108 | + } |
| 109 | +} |
| 110 | + |
| 111 | +func composeArgs(args []string) (any, []string, error) { |
| 112 | + if len(args) == 0 { |
| 113 | + return nil, nil, fmt.Errorf("no arguments provided") |
| 114 | + } |
| 115 | + if args[0] == "null" { |
| 116 | + return nil, args[1:], nil |
| 117 | + } |
| 118 | + if args[0] == "true" { |
| 119 | + return true, args[1:], nil |
| 120 | + } |
| 121 | + if args[0] == "false" { |
| 122 | + return false, args[1:], nil |
| 123 | + } |
| 124 | + if f32, ok := strings.CutPrefix(args[0], "f32:"); ok { |
| 125 | + f, err := strconv.ParseFloat(f32, 32) |
| 126 | + if err != nil { |
| 127 | + return nil, args, fmt.Errorf("invalid f32 value: %s", args[0]) |
| 128 | + } |
| 129 | + return float32(f), args[1:], nil |
| 130 | + } |
| 131 | + if f64, ok := strings.CutPrefix(args[0], "f64:"); ok { |
| 132 | + f, err := strconv.ParseFloat(f64, 64) |
| 133 | + if err != nil { |
| 134 | + return nil, args, fmt.Errorf("invalid f64 value: %s", args[0]) |
| 135 | + } |
| 136 | + return f, args[1:], nil |
| 137 | + } |
| 138 | + if str, ok := strings.CutPrefix(args[0], "str:"); ok { |
| 139 | + return str, args[1:], nil |
| 140 | + } |
| 141 | + if args[0] == "[" { |
| 142 | + arr := []any{} |
| 143 | + rest := args[1:] |
| 144 | + for { |
| 145 | + if len(rest) == 0 { |
| 146 | + return nil, args, fmt.Errorf("unterminated array") |
| 147 | + } |
| 148 | + if rest[0] == "]" { |
| 149 | + break |
| 150 | + } |
| 151 | + if elem, r, err := composeArgs(rest); err != nil { |
| 152 | + return nil, args, err |
| 153 | + } else { |
| 154 | + arr = append(arr, elem) |
| 155 | + rest = r |
| 156 | + } |
| 157 | + } |
| 158 | + return arr, rest[1:], nil |
| 159 | + } |
| 160 | + if args[0] == "{" { |
| 161 | + m := make(map[any]any) |
| 162 | + rest := args[1:] |
| 163 | + for { |
| 164 | + if len(rest) == 0 { |
| 165 | + return nil, args, fmt.Errorf("unterminated map") |
| 166 | + } |
| 167 | + if rest[0] == "}" { |
| 168 | + break |
| 169 | + } |
| 170 | + key, r, err := composeArgs(rest) |
| 171 | + if err != nil { |
| 172 | + return nil, args, fmt.Errorf("invalid map key: %w", err) |
| 173 | + } |
| 174 | + rest = r |
| 175 | + if len(rest) == 0 { |
| 176 | + return nil, args, fmt.Errorf("unterminated map (missing value)") |
| 177 | + } |
| 178 | + value, r, err := composeArgs(rest) |
| 179 | + if err != nil { |
| 180 | + return nil, args, fmt.Errorf("invalid map value: %w", err) |
| 181 | + } |
| 182 | + m[key] = value |
| 183 | + rest = r |
| 184 | + } |
| 185 | + return m, rest[1:], nil |
| 186 | + } |
| 187 | + // Autodetect int or string |
| 188 | + if i, err := strconv.Atoi(args[0]); err == nil { |
| 189 | + return i, args[1:], nil |
| 190 | + } |
| 191 | + return args[0], args[1:], nil |
| 192 | +} |
| 193 | + |
| 194 | +func send(ctx context.Context, server string, method string, args []any, notification bool) (any, any, error) { |
| 195 | + netType := "unix" |
| 196 | + if strings.Contains(server, ":") { |
| 197 | + netType = "tcp" |
| 198 | + } |
| 199 | + c, err := net.Dial(netType, server) |
| 200 | + if err != nil { |
| 201 | + return nil, nil, fmt.Errorf("error connecting to server: %w", err) |
| 202 | + } |
| 203 | + |
| 204 | + conn := msgpackrpc.NewConnection(c, c, nil, nil, nil) |
| 205 | + defer conn.Close() |
| 206 | + go conn.Run() |
| 207 | + |
| 208 | + // Send notification... |
| 209 | + if notification { |
| 210 | + if err := conn.SendNotification(method, args...); err != nil { |
| 211 | + return nil, nil, fmt.Errorf("error sending notification: %w", err) |
| 212 | + } |
| 213 | + return nil, nil, nil |
| 214 | + } |
| 215 | + |
| 216 | + // ...or send Request |
| 217 | + reqResult, reqError, err := conn.SendRequest(ctx, method, args...) |
| 218 | + if err != nil { |
| 219 | + return nil, nil, fmt.Errorf("error sending request: %w", err) |
| 220 | + } |
| 221 | + return reqResult, reqError, nil |
| 222 | +} |
0 commit comments