github.com/arduino/arduino-cloud-cli@v0.0.0-20240517070944-e7a449561083/command/ota/readheader.go (about)

     1  // This file is part of arduino-cloud-cli.
     2  //
     3  // Copyright (C) 2021 ARDUINO SA (http://www.arduino.cc/)
     4  //
     5  // This program is free software: you can redistribute it and/or modify
     6  // it under the terms of the GNU Affero General Public License as published
     7  // by the Free Software Foundation, either version 3 of the License, or
     8  // (at your option) any later version.
     9  //
    10  // This program is distributed in the hope that it will be useful,
    11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  // GNU Affero General Public License for more details.
    14  //
    15  // You should have received a copy of the GNU Affero General Public License
    16  // along with this program.  If not, see <https://www.gnu.org/licenses/>.
    17  
    18  package ota
    19  
    20  import (
    21  	"fmt"
    22  	"os"
    23  
    24  	"github.com/arduino/arduino-cli/cli/feedback"
    25  	"github.com/arduino/arduino-cloud-cli/internal/ota"
    26  )
    27  
    28  type ReadHeaderParams struct {
    29  	File string
    30  }
    31  
    32  // Encode command is used to encode a firmware OTA
    33  func ReadHeader(params *ReadHeaderParams) error {
    34  	_, err := os.Stat(params.File)
    35  	if err != nil {
    36  		return fmt.Errorf("file %s does not exists: %w", params.File, err)
    37  	}
    38  
    39  	// Verify if file has already an OTA header
    40  	header, err := ota.DecodeOtaFirmwareHeaderFromFile(params.File)
    41  	if err != nil {
    42  		return fmt.Errorf("file %s does not contains a valid OTA header: %v", params.File, err)
    43  	}
    44  	if header == nil {
    45  		return fmt.Errorf("file %s does not contains a valid OTA header", params.File)
    46  	}
    47  
    48  	feedback.PrintResult(header)
    49  
    50  	return nil
    51  }