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src/os/download.rs
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289
src/os/download.rs
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use std::process::Command;
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use std::path::Path;
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use std::fs;
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use std::fmt;
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use std::error::Error;
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use std::io;
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// Define a custom error type for download operations
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#[derive(Debug)]
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pub enum DownloadError {
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CreateDirectoryFailed(io::Error),
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CurlExecutionFailed(io::Error),
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DownloadFailed(String),
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FileMetadataError(io::Error),
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FileTooSmall(i64, i64),
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RemoveFileFailed(io::Error),
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ExtractionFailed(String),
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CommandExecutionFailed(io::Error),
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InvalidUrl(String),
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NotAFile(String),
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PlatformNotSupported(String),
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InstallationFailed(String),
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}
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// Implement Display for DownloadError
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impl fmt::Display for DownloadError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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DownloadError::CreateDirectoryFailed(e) => write!(f, "Error creating directories: {}", e),
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DownloadError::CurlExecutionFailed(e) => write!(f, "Error executing curl: {}", e),
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DownloadError::DownloadFailed(url) => write!(f, "Error downloading url: {}", url),
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DownloadError::FileMetadataError(e) => write!(f, "Error getting file metadata: {}", e),
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DownloadError::FileTooSmall(size, min) => write!(f, "Error: Downloaded file is too small ({}KB < {}KB)", size, min),
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DownloadError::RemoveFileFailed(e) => write!(f, "Error removing file: {}", e),
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DownloadError::ExtractionFailed(e) => write!(f, "Error extracting archive: {}", e),
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DownloadError::CommandExecutionFailed(e) => write!(f, "Error executing command: {}", e),
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DownloadError::InvalidUrl(url) => write!(f, "Invalid URL: {}", url),
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DownloadError::NotAFile(path) => write!(f, "Not a file: {}", path),
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DownloadError::PlatformNotSupported(msg) => write!(f, "{}", msg),
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DownloadError::InstallationFailed(msg) => write!(f, "{}", msg),
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}
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}
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}
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// Implement Error trait for DownloadError
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impl Error for DownloadError {
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fn source(&self) -> Option<&(dyn Error + 'static)> {
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match self {
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DownloadError::CreateDirectoryFailed(e) => Some(e),
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DownloadError::CurlExecutionFailed(e) => Some(e),
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DownloadError::FileMetadataError(e) => Some(e),
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DownloadError::RemoveFileFailed(e) => Some(e),
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DownloadError::CommandExecutionFailed(e) => Some(e),
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_ => None,
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}
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}
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}
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/**
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* Download a file from URL to destination using the curl command.
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*
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* # Arguments
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*
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* * `url` - The URL to download from
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* * `dest` - The destination path where the file will be saved
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* * `min_size_kb` - Minimum required file size in KB (0 for no minimum)
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*
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* # Returns
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*
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* * `Ok(String)` - The path where the file was saved or extracted
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* * `Err(DownloadError)` - An error if the download failed
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*
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* # Examples
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*
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* ```
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* // Download a file with no minimum size requirement
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* let path = download("https://example.com/file.txt", "/tmp/file.txt", 0)?;
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*
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* // Download a file with minimum size requirement of 100KB
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* let path = download("https://example.com/file.zip", "/tmp/file.zip", 100)?;
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* ```
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*
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* # Notes
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*
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* If the URL ends with .tar.gz, .tgz, .tar, or .zip, the file will be automatically
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* extracted to the destination directory.
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*/
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pub fn download(url: &str, dest: &str, min_size_kb: i64) -> Result<String, DownloadError> {
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// Create parent directories if they don't exist
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let dest_path = Path::new(dest);
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if let Some(parent) = dest_path.parent() {
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fs::create_dir_all(parent).map_err(DownloadError::CreateDirectoryFailed)?;
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}
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// Create a temporary path for downloading
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let temp_path = format!("{}.download", dest);
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// Use curl to download the file with progress bar
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println!("Downloading {} to {}", url, dest);
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let output = Command::new("curl")
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.args(&["--progress-bar", "--location", "--fail", "--output", &temp_path, url])
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.status()
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.map_err(DownloadError::CurlExecutionFailed)?;
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if !output.success() {
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return Err(DownloadError::DownloadFailed(url.to_string()));
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}
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// Show file size after download
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match fs::metadata(&temp_path) {
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Ok(metadata) => {
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let size_bytes = metadata.len();
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let size_kb = size_bytes / 1024;
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let size_mb = size_kb / 1024;
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if size_mb > 1 {
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println!("Download complete! File size: {:.2} MB", size_bytes as f64 / (1024.0 * 1024.0));
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} else {
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println!("Download complete! File size: {:.2} KB", size_bytes as f64 / 1024.0);
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}
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},
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Err(_) => println!("Download complete!"),
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}
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// Check file size if minimum size is specified
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if min_size_kb > 0 {
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let metadata = fs::metadata(&temp_path).map_err(DownloadError::FileMetadataError)?;
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let size_kb = metadata.len() as i64 / 1024;
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if size_kb < min_size_kb {
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fs::remove_file(&temp_path).map_err(DownloadError::RemoveFileFailed)?;
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return Err(DownloadError::FileTooSmall(size_kb, min_size_kb));
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}
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}
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// Check if it's a compressed file that needs extraction
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let lower_url = url.to_lowercase();
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let is_archive = lower_url.ends_with(".tar.gz") ||
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lower_url.ends_with(".tgz") ||
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lower_url.ends_with(".tar") ||
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lower_url.ends_with(".zip");
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if is_archive {
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// Create the destination directory
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fs::create_dir_all(dest).map_err(DownloadError::CreateDirectoryFailed)?;
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// Extract the file using the appropriate command with progress indication
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println!("Extracting {} to {}", temp_path, dest);
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let output = if lower_url.ends_with(".zip") {
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Command::new("unzip")
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.args(&["-o", &temp_path, "-d", dest]) // Removed -q for verbosity
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.status()
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} else if lower_url.ends_with(".tar.gz") || lower_url.ends_with(".tgz") {
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Command::new("tar")
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.args(&["-xzvf", &temp_path, "-C", dest]) // Added v for verbosity
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.status()
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} else {
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Command::new("tar")
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.args(&["-xvf", &temp_path, "-C", dest]) // Added v for verbosity
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.status()
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};
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match output {
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Ok(status) => {
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if !status.success() {
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return Err(DownloadError::ExtractionFailed("Error extracting archive".to_string()));
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}
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},
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Err(e) => return Err(DownloadError::CommandExecutionFailed(e)),
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}
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// Show number of extracted files
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match fs::read_dir(dest) {
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Ok(entries) => {
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let count = entries.count();
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println!("Extraction complete! Extracted {} files/directories", count);
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},
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Err(_) => println!("Extraction complete!"),
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}
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// Remove the temporary file
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fs::remove_file(&temp_path).map_err(DownloadError::RemoveFileFailed)?;
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Ok(dest.to_string())
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} else {
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// Just rename the temporary file to the final destination
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fs::rename(&temp_path, dest).map_err(|e| DownloadError::CreateDirectoryFailed(e))?;
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Ok(dest.to_string())
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}
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}
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/**
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* Download a file and install it if it's a supported package format.
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*
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* # Arguments
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*
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* * `url` - The URL to download from
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* * `min_size_kb` - Minimum required file size in KB (0 for no minimum)
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*
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* # Returns
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*
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* * `Ok(String)` - The path where the file was saved or extracted
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* * `Err(DownloadError)` - An error if the download or installation failed
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*
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* # Examples
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*
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* ```
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* // Download and install a .deb package
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* let result = download_install("https://example.com/package.deb", 100)?;
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* ```
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*
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* # Notes
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*
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* Currently only supports .deb packages on Debian-based systems.
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* For other file types, it behaves the same as the download function.
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*/
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pub fn download_install(url: &str, min_size_kb: i64) -> Result<String, DownloadError> {
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// Extract filename from URL
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let filename = match url.split('/').last() {
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Some(name) => name,
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None => return Err(DownloadError::InvalidUrl("cannot extract filename".to_string()))
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};
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// Create a proper destination path
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let dest_path = format!("/tmp/{}", filename);
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let download_result = download(url, &dest_path, min_size_kb)?;
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// Check if the downloaded result is a file
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let path = Path::new(&dest_path);
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if !path.is_file() {
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return Ok(download_result); // Not a file, might be an extracted directory
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}
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// Check if it's a .deb package
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if dest_path.to_lowercase().ends_with(".deb") {
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// Check if we're on a Debian-based platform
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let platform_check = Command::new("sh")
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.arg("-c")
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.arg("command -v dpkg > /dev/null && command -v apt > /dev/null || test -f /etc/debian_version")
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.status();
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match platform_check {
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Ok(status) => {
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if !status.success() {
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return Err(DownloadError::PlatformNotSupported(
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"Cannot install .deb package: not on a Debian-based system".to_string()
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));
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}
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},
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Err(_) => return Err(DownloadError::PlatformNotSupported(
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"Failed to check system compatibility for .deb installation".to_string()
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)),
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}
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// Install the .deb package non-interactively
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println!("Installing package: {}", dest_path);
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let install_result = Command::new("sudo")
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.args(&["dpkg", "--install", &dest_path])
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.status();
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match install_result {
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Ok(status) => {
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if !status.success() {
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// If dpkg fails, try to fix dependencies and retry
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println!("Attempting to resolve dependencies...");
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let fix_deps = Command::new("sudo")
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.args(&["apt-get", "install", "-f", "-y"])
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.status();
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if let Ok(fix_status) = fix_deps {
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if !fix_status.success() {
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return Err(DownloadError::InstallationFailed(
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"Failed to resolve package dependencies".to_string()
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));
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}
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} else {
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return Err(DownloadError::InstallationFailed(
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"Failed to resolve package dependencies".to_string()
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));
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}
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}
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println!("Package installation completed successfully");
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},
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Err(e) => return Err(DownloadError::CommandExecutionFailed(e)),
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}
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}
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Ok(download_result)
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}
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