installer

func Download ¶

func Download(url, destPath string) error

Download downloads a file from the specified URL to the destination path. Uses streaming to handle large files efficiently.

Parameters:

• url: The HTTPS URL to download from
• destPath: The local file path where the download should be saved

func ExtractTarGz ¶

func ExtractTarGz(tarGzPath, destDir string) error

ExtractTarGz extracts a tar.gz archive to the specified destination directory. Sets executable permissions (0755) on extracted files. Prevents path traversal attacks by validating all extraction paths.

Parameters:

• tarGzPath: Path to the tar.gz archive
• destDir: Destination directory for extraction

func ExtractZip ¶

func ExtractZip(zipPath, destDir string) error

ExtractZip extracts a ZIP archive to the specified destination directory. Sets executable permissions (0755) on extracted files. Prevents path traversal attacks by validating all extraction paths.

Parameters:

• zipPath: Path to the ZIP archive
• destDir: Destination directory for extraction

func VerifyChecksum ¶

func VerifyChecksum(filePath, expectedSHA256 string) error

VerifyChecksum verifies that a file's SHA256 checksum matches the expected value. This function uses streaming to handle large files efficiently without loading them entirely into memory.

Parameters:

• filePath: Path to the file to verify
• expectedSHA256: Expected SHA256 checksum in hexadecimal format (case-insensitive)

Returns an error if:

• The file doesn't exist
• The file cannot be read
• The checksum doesn't match