mirror of
https://github.com/imjasonh/krust
synced 2026-07-07 22:35:25 +00:00
refactor: consolidate authentication systems
Remove the custom keychain implementation and keep only the simple wrapper around oci-distribution's built-in auth. This change: - Removes 300+ lines of duplicate authentication code - Leverages well-tested oci-distribution auth functionality - Simplifies the codebase and reduces maintenance burden - Maintains full backward compatibility The custom keychain implementation was never used in production code, only the simple resolve_auth function was called. All tests have been updated and are passing. Fixes #17 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Jason Hall
parent
e497d78fea
commit
047d6de9ef
4 changed files with 21 additions and 548 deletions
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@ -1,364 +0,0 @@
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//! Keychain implementation for credential management
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use super::{Anonymous, AuthConfig, Authenticator, DockerAuthEntry, DockerConfig};
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use anyhow::{Context, Result};
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use std::collections::HashMap;
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use std::path::PathBuf;
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use std::sync::{Arc, Mutex};
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use tracing::{debug, warn};
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/// Trait for types that can resolve authentication for a given resource
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pub trait Keychain: Send + Sync {
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/// Resolve authentication for a given resource (registry URL or image reference)
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fn resolve(&self, resource: &str) -> Result<Box<dyn Authenticator>>;
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}
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/// Default keychain implementation that checks Docker config files
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pub struct DefaultKeychain {
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/// Cached config to avoid re-reading files
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config_cache: Arc<Mutex<Option<DockerConfig>>>,
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}
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impl DefaultKeychain {
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/// Create a new DefaultKeychain
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pub fn new() -> Self {
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Self {
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config_cache: Arc::new(Mutex::new(None)),
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}
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}
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/// Get paths to check for Docker config
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fn config_paths() -> Vec<PathBuf> {
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let mut paths = Vec::new();
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// Check DOCKER_CONFIG environment variable
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if let Ok(docker_config) = std::env::var("DOCKER_CONFIG") {
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paths.push(PathBuf::from(docker_config).join("config.json"));
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}
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// Check REGISTRY_AUTH_FILE environment variable
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if let Ok(auth_file) = std::env::var("REGISTRY_AUTH_FILE") {
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paths.push(PathBuf::from(auth_file));
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}
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// Check XDG_RUNTIME_DIR for containers auth
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if let Ok(xdg_runtime) = std::env::var("XDG_RUNTIME_DIR") {
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paths.push(PathBuf::from(xdg_runtime).join("containers/auth.json"));
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}
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// Check default Docker config location
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if let Some(home) = dirs::home_dir() {
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paths.push(home.join(".docker/config.json"));
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}
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paths
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}
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/// Load Docker config from disk
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fn load_config(&self) -> Result<DockerConfig> {
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// Check cache first
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{
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let cache = self.config_cache.lock().unwrap();
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if let Some(config) = cache.as_ref() {
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return Ok(config.clone());
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}
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}
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// Try each config path
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for path in Self::config_paths() {
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if path.exists() {
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debug!("Checking Docker config at: {}", path.display());
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match std::fs::read_to_string(&path) {
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Ok(content) => {
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match serde_json::from_str::<DockerConfig>(&content) {
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Ok(config) => {
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debug!("Loaded Docker config from: {}", path.display());
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// Cache the config
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let mut cache = self.config_cache.lock().unwrap();
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*cache = Some(config.clone());
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return Ok(config);
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}
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Err(e) => {
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warn!("Failed to parse Docker config at {}: {}", path.display(), e);
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}
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}
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}
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Err(e) => {
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warn!("Failed to read Docker config at {}: {}", path.display(), e);
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}
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}
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}
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}
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// Return empty config if no valid config found
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Ok(DockerConfig {
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auths: HashMap::new(),
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cred_helpers: HashMap::new(),
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creds_store: None,
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})
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}
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/// Extract registry from image reference
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fn extract_registry(image_ref: &str) -> &str {
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// Handle different image reference formats:
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// - docker.io/library/ubuntu:latest -> docker.io
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// - gcr.io/project/image:tag -> gcr.io
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// - localhost:5000/image -> localhost:5000
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// - ubuntu:latest -> docker.io (implicit)
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if let Some(slash_pos) = image_ref.find('/') {
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let registry_part = &image_ref[..slash_pos];
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// Check if this looks like a registry (contains . or :)
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if registry_part.contains('.') || registry_part.contains(':') {
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return registry_part;
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}
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}
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// Default to Docker Hub
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"index.docker.io"
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}
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/// Normalize registry URL for matching
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fn normalize_registry(registry: &str) -> Vec<String> {
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let mut variants = vec![registry.to_string()];
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// Add common variants
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if registry == "docker.io" || registry == "index.docker.io" {
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variants.push("docker.io".to_string());
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variants.push("index.docker.io".to_string());
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variants.push("https://index.docker.io/v1/".to_string());
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variants.push("https://index.docker.io/v2/".to_string());
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} else if !registry.starts_with("http://") && !registry.starts_with("https://") {
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// Add protocol variants
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variants.push(format!("https://{}", registry));
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variants.push(format!("http://{}", registry));
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// Add /v1/ and /v2/ variants
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variants.push(format!("https://{}/v1/", registry));
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variants.push(format!("https://{}/v2/", registry));
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}
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variants
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}
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/// Find auth entry for a registry
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fn find_auth_entry(&self, config: &DockerConfig, registry: &str) -> Option<DockerAuthEntry> {
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let variants = Self::normalize_registry(registry);
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for variant in variants {
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if let Some(entry) = config.auths.get(&variant) {
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return Some(entry.clone());
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}
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}
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None
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}
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/// Get credential helper for a registry
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fn get_credential_helper(&self, config: &DockerConfig, registry: &str) -> Option<String> {
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// Check specific credential helper for registry
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if let Some(helper) = config.cred_helpers.get(registry) {
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return Some(helper.clone());
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}
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// Check default credential store
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config.creds_store.clone()
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}
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/// Execute credential helper to get credentials
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fn execute_credential_helper(&self, helper: &str, registry: &str) -> Result<AuthConfig> {
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use std::io::Write;
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use std::process::{Command, Stdio};
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let helper_name = format!("docker-credential-{}", helper);
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debug!(
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"Executing credential helper: {} for {}",
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helper_name, registry
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);
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let mut child = Command::new(&helper_name)
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.arg("get")
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.stdin(Stdio::piped())
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.stdout(Stdio::piped())
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.stderr(Stdio::piped())
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.spawn()
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.context(format!(
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"Failed to spawn credential helper: {}",
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helper_name
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))?;
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// Write registry URL to stdin
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if let Some(mut stdin) = child.stdin.take() {
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stdin.write_all(registry.as_bytes())?;
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stdin.write_all(b"\n")?;
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}
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let output = child.wait_with_output()?;
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if !output.status.success() {
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let stderr = String::from_utf8_lossy(&output.stderr);
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anyhow::bail!("Credential helper {} failed: {}", helper_name, stderr);
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}
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// Parse output as JSON
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#[derive(serde::Deserialize)]
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struct HelperResponse {
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#[serde(rename = "Username")]
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username: Option<String>,
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#[serde(rename = "Secret")]
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secret: Option<String>,
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#[serde(rename = "ServerURL")]
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_server_url: Option<String>,
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}
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let response: HelperResponse = serde_json::from_slice(&output.stdout)
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.context("Failed to parse credential helper response")?;
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Ok(AuthConfig {
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username: response.username,
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password: response.secret,
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..Default::default()
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})
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}
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}
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impl Default for DefaultKeychain {
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fn default() -> Self {
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Self::new()
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}
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}
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impl Keychain for DefaultKeychain {
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fn resolve(&self, resource: &str) -> Result<Box<dyn Authenticator>> {
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let config = self.load_config()?;
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let registry = Self::extract_registry(resource);
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debug!(
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"Resolving auth for resource: {} (registry: {})",
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resource, registry
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);
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// Try to find auth entry in config
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if let Some(auth_entry) = self.find_auth_entry(&config, registry) {
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debug!("Found auth entry for {}", registry);
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let auth_config = auth_entry.to_auth_config();
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// Return appropriate authenticator based on auth type
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if auth_config.is_anonymous() {
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return Ok(Box::new(Anonymous));
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}
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return Ok(Box::new(ConfigAuthenticator {
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config: auth_config,
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}));
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}
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// Try credential helper
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if let Some(helper) = self.get_credential_helper(&config, registry) {
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debug!("Trying credential helper: {} for {}", helper, registry);
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match self.execute_credential_helper(&helper, registry) {
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Ok(auth_config) => {
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return Ok(Box::new(ConfigAuthenticator {
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config: auth_config,
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}));
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}
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Err(e) => {
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warn!("Credential helper failed: {}", e);
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}
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}
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}
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// Default to anonymous
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debug!("No credentials found for {}, using anonymous", registry);
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Ok(Box::new(Anonymous))
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}
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}
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/// Authenticator that returns a fixed AuthConfig
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struct ConfigAuthenticator {
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config: AuthConfig,
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}
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impl Authenticator for ConfigAuthenticator {
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fn authorization(&self) -> Result<AuthConfig> {
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Ok(self.config.clone())
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}
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}
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/// Multi-keychain that tries multiple keychains in order
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pub struct MultiKeychain {
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keychains: Vec<Box<dyn Keychain>>,
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}
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impl MultiKeychain {
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/// Create a new MultiKeychain
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#[allow(dead_code)]
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pub fn new(keychains: Vec<Box<dyn Keychain>>) -> Self {
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Self { keychains }
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}
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}
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impl Keychain for MultiKeychain {
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fn resolve(&self, resource: &str) -> Result<Box<dyn Authenticator>> {
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for keychain in &self.keychains {
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match keychain.resolve(resource) {
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Ok(auth) => {
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// Check if it's not anonymous
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if let Ok(config) = auth.authorization() {
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if !config.is_anonymous() {
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return Ok(auth);
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}
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}
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}
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Err(e) => {
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debug!("Keychain failed: {}", e);
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}
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}
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}
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// Default to anonymous
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Ok(Box::new(Anonymous))
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_extract_registry() {
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assert_eq!(
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DefaultKeychain::extract_registry("docker.io/library/ubuntu:latest"),
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"docker.io"
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);
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assert_eq!(
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DefaultKeychain::extract_registry("gcr.io/project/image:tag"),
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"gcr.io"
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);
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assert_eq!(
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DefaultKeychain::extract_registry("localhost:5000/image"),
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"localhost:5000"
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);
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assert_eq!(
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DefaultKeychain::extract_registry("ubuntu:latest"),
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"index.docker.io"
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);
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assert_eq!(
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DefaultKeychain::extract_registry("user/image:tag"),
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"index.docker.io"
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);
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}
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#[test]
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fn test_normalize_registry() {
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let variants = DefaultKeychain::normalize_registry("docker.io");
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assert!(variants.contains(&"docker.io".to_string()));
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assert!(variants.contains(&"index.docker.io".to_string()));
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let variants = DefaultKeychain::normalize_registry("gcr.io");
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assert!(variants.contains(&"gcr.io".to_string()));
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assert!(variants.contains(&"https://gcr.io".to_string()));
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}
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}
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@ -8,10 +8,8 @@ use base64::Engine;
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use serde::{Deserialize, Serialize};
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use std::collections::HashMap;
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mod keychain;
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mod simple;
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pub use keychain::{DefaultKeychain, Keychain};
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pub use simple::resolve_auth;
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/// Authentication configuration containing credentials
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@ -114,62 +112,6 @@ impl AuthConfig {
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}
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}
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/// Trait for types that can provide authentication
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pub trait Authenticator: Send + Sync {
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/// Get the authentication configuration
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fn authorization(&self) -> Result<AuthConfig>;
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}
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/// Anonymous authenticator
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pub struct Anonymous;
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impl Authenticator for Anonymous {
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fn authorization(&self) -> Result<AuthConfig> {
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Ok(AuthConfig::anonymous())
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}
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}
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/// Basic authenticator with username and password
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pub struct Basic {
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username: String,
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password: String,
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}
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impl Basic {
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pub fn new(username: String, password: String) -> Self {
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Self { username, password }
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}
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}
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impl Authenticator for Basic {
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fn authorization(&self) -> Result<AuthConfig> {
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Ok(AuthConfig::new(
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self.username.clone(),
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self.password.clone(),
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))
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}
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}
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/// Bearer token authenticator
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pub struct Bearer {
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token: String,
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}
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impl Bearer {
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pub fn new(token: String) -> Self {
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Self { token }
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}
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}
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impl Authenticator for Bearer {
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fn authorization(&self) -> Result<AuthConfig> {
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Ok(AuthConfig {
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registry_token: Some(self.token.clone()),
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..Default::default()
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})
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}
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}
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/// Docker config file structure
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#[derive(Debug, Clone, Deserialize, Serialize)]
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pub struct DockerConfig {
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|
|
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@ -1,17 +1,6 @@
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//! Tests for the auth module
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use super::*;
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use crate::auth::keychain::MultiKeychain;
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use std::fs;
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use std::path::{Path, PathBuf};
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use tempfile::TempDir;
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|
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/// Helper to create a test Docker config file
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fn create_test_config(dir: &Path, content: &str) -> PathBuf {
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let config_path = dir.join("config.json");
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fs::write(&config_path, content).unwrap();
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config_path
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}
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|
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#[test]
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fn test_docker_config_parsing() {
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|
|
@ -67,103 +56,3 @@ fn test_docker_auth_entry_to_auth_config() {
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assert!(config.username.is_none());
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assert!(config.password.is_none());
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}
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|
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#[test]
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fn test_default_keychain_config_paths() {
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let temp_dir = TempDir::new().unwrap();
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let config_content = r#"{
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"auths": {
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"test.registry.io": {
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"auth": "dGVzdDp0ZXN0"
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}
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}
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}"#;
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|
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// Test DOCKER_CONFIG env var
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let docker_config_dir = temp_dir.path().join("docker");
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fs::create_dir_all(&docker_config_dir).unwrap();
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create_test_config(&docker_config_dir, config_content);
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|
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std::env::set_var("DOCKER_CONFIG", docker_config_dir.to_str().unwrap());
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|
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let keychain = DefaultKeychain::new();
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let auth = keychain.resolve("test.registry.io/image:tag").unwrap();
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let auth_config = auth.authorization().unwrap();
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|
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assert!(!auth_config.is_anonymous());
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assert_eq!(auth_config.auth, Some("dGVzdDp0ZXN0".to_string()));
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std::env::remove_var("DOCKER_CONFIG");
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}
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|
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// Registry extraction tests are skipped as the method is private
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// The functionality is tested through the public resolve() method
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|
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#[test]
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fn test_keychain_resolve_different_registries() {
|
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// Test that keychain can resolve different registry formats
|
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let keychain = DefaultKeychain::new();
|
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|
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// Should return anonymous for unknown registries
|
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let auth = keychain.resolve("unknown.registry.io/image:tag").unwrap();
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let config = auth.authorization().unwrap();
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assert!(config.is_anonymous());
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}
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|
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#[test]
|
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fn test_anonymous_authenticator() {
|
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let anon = Anonymous;
|
||||
let auth = anon.authorization().unwrap();
|
||||
assert!(auth.is_anonymous());
|
||||
assert!(auth.to_authorization_header().unwrap().is_none());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_basic_authenticator() {
|
||||
let basic = Basic::new("user".to_string(), "pass".to_string());
|
||||
let auth = basic.authorization().unwrap();
|
||||
assert!(!auth.is_anonymous());
|
||||
|
||||
let header = auth.to_authorization_header().unwrap().unwrap();
|
||||
assert!(header.starts_with("Basic "));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_bearer_authenticator() {
|
||||
let bearer = Bearer::new("token123".to_string());
|
||||
let auth = bearer.authorization().unwrap();
|
||||
assert!(!auth.is_anonymous());
|
||||
|
||||
let header = auth.to_authorization_header().unwrap().unwrap();
|
||||
assert_eq!(header, "Bearer token123");
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_multi_keychain() {
|
||||
// Create a keychain that always returns anonymous
|
||||
struct AlwaysAnonymous;
|
||||
impl Keychain for AlwaysAnonymous {
|
||||
fn resolve(&self, _: &str) -> Result<Box<dyn Authenticator>> {
|
||||
Ok(Box::new(Anonymous))
|
||||
}
|
||||
}
|
||||
|
||||
// Create a keychain that returns basic auth
|
||||
struct AlwaysBasic;
|
||||
impl Keychain for AlwaysBasic {
|
||||
fn resolve(&self, _: &str) -> Result<Box<dyn Authenticator>> {
|
||||
Ok(Box::new(Basic::new("user".to_string(), "pass".to_string())))
|
||||
}
|
||||
}
|
||||
|
||||
// Test that MultiKeychain returns the first non-anonymous auth
|
||||
let multi = MultiKeychain::new(vec![
|
||||
Box::new(AlwaysAnonymous) as Box<dyn Keychain>,
|
||||
Box::new(AlwaysBasic) as Box<dyn Keychain>,
|
||||
]);
|
||||
|
||||
let auth = multi.resolve("any.registry.io").unwrap();
|
||||
let config = auth.authorization().unwrap();
|
||||
assert!(!config.is_anonymous());
|
||||
assert_eq!(config.username, Some("user".to_string()));
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,7 +1,8 @@
|
|||
//! Integration tests for authentication
|
||||
|
||||
use anyhow::Result;
|
||||
use krust::auth::{AuthConfig, DefaultKeychain, Keychain};
|
||||
use krust::auth::{resolve_auth, AuthConfig};
|
||||
use oci_distribution::secrets::RegistryAuth;
|
||||
use std::fs;
|
||||
use tempfile::TempDir;
|
||||
|
||||
|
|
@ -30,25 +31,30 @@ fn test_auth_integration_with_docker_config() -> Result<()> {
|
|||
// Set HOME to temp directory
|
||||
std::env::set_var("HOME", temp_dir.path());
|
||||
|
||||
let keychain = DefaultKeychain::new();
|
||||
|
||||
// Test GitHub Container Registry auth
|
||||
let ghcr_auth = keychain.resolve("ghcr.io/user/image:tag")?;
|
||||
let ghcr_config = ghcr_auth.authorization()?;
|
||||
assert!(!ghcr_config.is_anonymous());
|
||||
assert_eq!(ghcr_config.auth, Some("dGVzdDp0ZXN0MTIz".to_string()));
|
||||
let ghcr_auth = resolve_auth("ghcr.io/user/image:tag")?;
|
||||
match ghcr_auth {
|
||||
RegistryAuth::Basic(user, pass) => {
|
||||
// The base64 "dGVzdDp0ZXN0MTIz" decodes to "test:test123"
|
||||
assert_eq!(user, "test");
|
||||
assert_eq!(pass, "test123");
|
||||
}
|
||||
_ => panic!("Expected Basic auth for ghcr.io"),
|
||||
}
|
||||
|
||||
// Test Docker Hub auth
|
||||
let docker_auth = keychain.resolve("docker.io/library/ubuntu:latest")?;
|
||||
let docker_config = docker_auth.authorization()?;
|
||||
assert!(!docker_config.is_anonymous());
|
||||
assert_eq!(docker_config.username, Some("testuser".to_string()));
|
||||
assert_eq!(docker_config.password, Some("testpass".to_string()));
|
||||
let docker_auth = resolve_auth("docker.io/library/ubuntu:latest")?;
|
||||
match docker_auth {
|
||||
RegistryAuth::Basic(user, pass) => {
|
||||
assert_eq!(user, "testuser");
|
||||
assert_eq!(pass, "testpass");
|
||||
}
|
||||
_ => panic!("Expected Basic auth for docker.io"),
|
||||
}
|
||||
|
||||
// Test unknown registry returns anonymous
|
||||
let unknown_auth = keychain.resolve("unknown.registry.io/image:tag")?;
|
||||
let unknown_config = unknown_auth.authorization()?;
|
||||
assert!(unknown_config.is_anonymous());
|
||||
let unknown_auth = resolve_auth("unknown.registry.io/image:tag")?;
|
||||
assert!(matches!(unknown_auth, RegistryAuth::Anonymous));
|
||||
|
||||
// Clean up
|
||||
std::env::remove_var("HOME");
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue