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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| /********************************************************************************** | ||
| * Copyright (c) 2009-2019 Misakai Ltd. | ||
| * This program is free software: you can redistribute it and/or modify it under the | ||
| * terms of the GNU Affero General Public License as published by the Free Software | ||
| * Foundation, either version 3 of the License, or(at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, but WITHOUT ANY | ||
| * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A | ||
| * PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License along | ||
| * with this program. If not, see<http://www.gnu.org/licenses/>. | ||
| ************************************************************************************/ | ||
|
|
||
| package keygen | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
|
|
||
| mqtt "github.com/eclipse/paho.mqtt.golang" | ||
| "github.com/emitter-io/emitter/internal/errors" | ||
| "github.com/emitter-io/emitter/internal/provider/logging" | ||
| "github.com/emitter-io/emitter/internal/service/keygen" | ||
| cli "github.com/jawher/mow.cli" | ||
| ) | ||
|
|
||
| // Generate a new channel key. | ||
| func NewKey(cmd *cli.Cmd) { | ||
| cmd.Spec = "MASTERKEY CHANNEL ACCESS [ -t=<ttl>] [ -h=<host> ]" | ||
| var ( | ||
| masterkey = cmd.StringArg("MASTERKEY", "", "Specifies the master key for generating channel keys.") | ||
| channel = cmd.StringArg("CHANNEL", "", "Specifies the name channel for which to generate key.") | ||
| access = cmd.StringArg("ACCESS", "", "Specifies the access rights for the channel (rwslpex).") | ||
| ttl = cmd.IntOpt("t ttl", 0, "Specifies the time to live for the key in seconds. By default, the key will never expire.") | ||
| host = cmd.StringOpt("h host", "127.0.0.1:8080", "Specifies the broker host name and port. This must follow the <ip:port> format.") | ||
| ) | ||
|
|
||
| cmd.Action = func() { | ||
| // Create a channel to receive the response. | ||
| respChan := make(chan []byte) | ||
|
|
||
| // Create a new MQTT client. | ||
| opts := mqtt.NewClientOptions().AddBroker(fmt.Sprintf("tcp://%s", *host)) | ||
| opts.SetDefaultPublishHandler(func(client mqtt.Client, m mqtt.Message) { | ||
| respChan <- m.Payload() | ||
| }) | ||
| client := mqtt.NewClient(opts) | ||
|
|
||
| // Connect to the MQTT broker. | ||
| if token := client.Connect(); token.Wait() && token.Error() != nil { | ||
| panic(fmt.Errorf("failed to connect: %v", token.Error())) | ||
| } | ||
|
|
||
| // Publish the request. | ||
| request := keygen.Request{ | ||
| Key: *masterkey, | ||
| Channel: *channel, | ||
| Type: *access, | ||
| TTL: int32(*ttl), | ||
| } | ||
| payload, err := json.Marshal(request) | ||
| if err != nil { | ||
| logging.LogError("keygen", "marshaling the request", err) | ||
| return | ||
| } | ||
| if token := client.Publish("emitter/keygen/", 1, false, payload); token.Wait() && token.Error() != nil { | ||
| logging.LogError("keygen", "publishing the request", token.Error()) | ||
| return | ||
| } | ||
|
|
||
| // Wait for the response and check whether it's an error. | ||
| response := <-respChan | ||
| var errResponse errors.Error | ||
| if err := json.Unmarshal(response, &errResponse); err == nil && errResponse.Error() != "" { | ||
| logging.LogError("keygen", "generating the key", fmt.Errorf("error: %s", errResponse.Error())) | ||
| return | ||
| } | ||
|
|
||
| // Parse the response and print the key. | ||
| keygen := keygen.Response{} | ||
| if err := json.Unmarshal(response, &keygen); err != nil { | ||
| logging.LogError("keygen", "parsing the response", err) | ||
| return | ||
| } | ||
| fmt.Println(keygen.Key) | ||
| client.Disconnect(250) | ||
| } | ||
| } |
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