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// Copyright 2022 Northern.tech AS
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"strings"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"github.com/mendersoftware/mender-cli/client/deviceconnect"
"github.com/mendersoftware/mender-cli/log"
)
const (
deviceDelimiter = ":"
)
var fileTransferCmd = &cobra.Command{
Use: "cp device_id:file_path file_path",
Short: "Transfer files from/to a device",
Long: "A CLI interface for copying files from/to devices in your setup",
Args: cobra.MinimumNArgs(2),
Run: func(c *cobra.Command, args []string) {
cmd, err := NewFileTransfer(c, args)
CheckErr(err)
CheckErr(cmd.Run())
},
}
type FileTransferCmd struct {
server string
skipVerify bool
source string
destination string
token string
}
func NewFileTransfer(cmd *cobra.Command, args []string) (*FileTransferCmd, error) {
server := viper.GetString(argRootServer)
if server == "" {
return nil, errors.New("Empty server value. This should never happen")
}
skipVerify, err := cmd.Flags().GetBool(argRootSkipVerify)
if err != nil {
return nil, err
}
token, err := getAuthToken(cmd)
if err != nil {
return nil, err
}
return &FileTransferCmd{
server: server,
skipVerify: skipVerify,
token: token,
source: args[0],
destination: args[1],
}, nil
}
func (c *FileTransferCmd) Run() error {
if strings.Contains(c.destination, ":") {
return c.upload()
}
return c.download()
}
func (c *FileTransferCmd) checkDevice(deviceID string) error {
// check if the device is connected
client := deviceconnect.NewClient(c.server, c.token, c.skipVerify)
device, err := client.GetDevice(deviceID)
if err != nil {
return errors.Wrap(err, "unable to get the device")
} else if device.Status != deviceconnect.CONNECTED {
return errors.New("the device is not connected")
}
return nil
}
func (c *FileTransferCmd) upload() error {
d, err := deviceSpecification(c.destination)
if err == nil {
err = c.checkDevice(d.DeviceID)
}
if err != nil {
return err
}
client := deviceconnect.NewFileTransferClient(c.server, c.token, c.skipVerify)
if err = client.Upload(c.source, d); err != nil {
return err
}
log.Infof("Successfully uploaded the file %q to device %q at location %q\n",
c.source, d.DeviceID, d.DevicePath)
return nil
}
func deviceSpecification(s string) (*deviceconnect.DeviceSpec, error) {
d := strings.Split(s, deviceDelimiter)
if len(d) > 2 {
return nil, errors.New("The device specification contains multiple ':' delimeters")
}
if len(d) != 2 {
return nil, errors.New("The device specification is missing the ':' separator")
}
return &deviceconnect.DeviceSpec{DeviceID: d[0], DevicePath: d[1]}, nil
}
func (c *FileTransferCmd) download() error {
d, err := deviceSpecification(c.source)
if err == nil {
err = c.checkDevice(d.DeviceID)
}
if err != nil {
return err
}
client := deviceconnect.NewFileTransferClient(c.server, c.token, c.skipVerify)
if err = client.Download(d, c.destination); err != nil {
return err
}
log.Infof("Successfully downloaded the file: %q from device %q to %q\n",
d.DevicePath, d.DeviceID, c.source)
return nil
}
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