76 lines
1.9 KiB
Go
76 lines
1.9 KiB
Go
package healthcheck
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import (
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"io"
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"os"
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"path/filepath"
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"strings"
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)
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// getChecksum calculates the SHA-256 checksum of a file
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func getChecksum(filePath string) (string, error) {
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// Open the file
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file, err := os.Open(filePath)
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if err != nil {
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return "", err
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}
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defer file.Close()
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// Calculate SHA-256
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hash := sha256.New()
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if _, err := io.Copy(hash, file); err != nil {
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return "", err
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}
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return hex.EncodeToString(hash.Sum(nil)), nil
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}
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// checkFileChecksum checks if a single file's checksum matches the expected value
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func checkFileChecksum(rootDir, fileName, expectedChecksum string) (bool, string) {
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filePath := filepath.Join(rootDir, strings.TrimSpace(fileName))
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actualChecksum, err := getChecksum(filePath)
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if err != nil {
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return false, fmt.Sprintf("Error reading file %s: %v", filePath, err)
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}
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if actualChecksum == expectedChecksum {
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return true, ""
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} else {
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return false, fmt.Sprintf("Checksum for %s failed. Expected %s, but got %s. Please revert your changes or contact the teaching team if you have a valid reason for adjusting them.", filePath, expectedChecksum, actualChecksum)
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}
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}
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func VerifyFiles(rootDir string, checkFileNameList string, checkFileSumList string) error {
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if len(checkFileNameList) == 0 {
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return nil
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os.Exit(1)
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}
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fileNames := strings.Split(checkFileNameList, ",")
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checkSums := strings.Split(checkFileSumList, ",")
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allPassed := true
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var errorMessages []string
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// Check each file's checksum
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for i, fileName := range fileNames {
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expectedChecksum := strings.TrimSpace(checkSums[i])
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passed, message := checkFileChecksum(rootDir, fileName, expectedChecksum)
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if message != "" {
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return fmt.Errorf(message)
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}
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if !passed {
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allPassed = false
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errorMessages = append(errorMessages, message)
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}
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}
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if allPassed {
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return nil
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} else {
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return fmt.Errorf("Some checksums failed. Please review the errors below:")
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}
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return nil
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}
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