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use crate::error::*;
use oci_spec::distribution::ErrorResponse;
use serde::{Deserialize, Serialize};
use std::{collections::HashMap, fs, io, path::*};
use url::Url;
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct StoredAuth {
auths: HashMap<String, Auth>,
}
impl StoredAuth {
pub fn load() -> Result<Self> {
let mut auth = StoredAuth::default();
if let Some(path) = auth_path() {
let new = Self::from_path(&path)?;
auth.append(new)?;
}
Ok(auth)
}
pub fn load_all() -> Result<Self> {
let mut auth = StoredAuth::default();
if let Some(path) = docker_auth_path() {
if let Ok(new) = Self::from_path(&path) {
auth.append(new)?;
}
}
if let Some(path) = podman_auth_path() {
if let Ok(new) = Self::from_path(&path) {
auth.append(new)?;
}
}
if let Some(path) = auth_path() {
let new = Self::from_path(&path)?;
auth.append(new)?;
}
Ok(auth)
}
pub fn insert(&mut self, domain: &str, octet: String) {
self.auths.insert(domain.to_string(), Auth { auth: octet });
}
pub fn save(&self) -> Result<()> {
let path = auth_path().ok_or(Error::NoValidRuntimeDirectory)?;
let parent = path.parent().unwrap();
if !parent.exists() {
fs::create_dir_all(&parent)?;
}
let f = fs::File::create(&path)?;
serde_json::to_writer_pretty(f, self)?;
Ok(())
}
pub fn get_token(&self, url: &url::Url) -> Result<Option<String>> {
let test_url = url.join("/v2/").unwrap();
let www_auth = match ureq::get(test_url.as_str()).call() {
Ok(_) => return Ok(None),
Err(ureq::Error::Status(status, res)) => {
if status == 401 {
res.header("www-authenticate").unwrap().to_string()
} else {
let err = res.into_json::<ErrorResponse>()?;
return Err(Error::RegistryError(err));
}
}
Err(ureq::Error::Transport(e)) => return Err(Error::NetworkError(e)),
};
let challenge = AuthChallenge::from_header(&www_auth)?;
self.challenge(&challenge).map(|token| Some(token))
}
pub fn challenge(&self, challenge: &AuthChallenge) -> Result<String> {
let token_url = Url::parse(&challenge.url)?;
let domain = token_url
.domain()
.expect("www-authenticate header returns invalid URL");
let mut req = ureq::get(token_url.as_str()).set("Accept", "application/json");
if let Some(auth) = self.auths.get(domain) {
req = req.set("Authorization", &format!("Basic {}", auth.auth))
}
req = req
.query("scope", &challenge.scope)
.query("service", &challenge.service);
match req.call() {
Ok(res) => {
let token = res.into_json::<Token>()?;
Ok(token.token)
}
Err(ureq::Error::Status(..)) => Err(Error::AuthorizationFailed(token_url.clone())),
Err(ureq::Error::Transport(e)) => Err(Error::NetworkError(e)),
}
}
pub fn append(&mut self, other: Self) -> Result<()> {
for (key, value) in other.auths.into_iter() {
self.auths.insert(key, value);
}
Ok(())
}
fn from_path(path: &Path) -> Result<Self> {
if path.is_file() {
let f = fs::File::open(path)?;
Ok(serde_json::from_reader(io::BufReader::new(f))?)
} else {
Ok(Self::default())
}
}
}
#[derive(Debug, Clone, Serialize, Deserialize)]
struct Auth {
auth: String,
}
fn auth_path() -> Option<PathBuf> {
directories::ProjectDirs::from("", "", "ocipkg")
.and_then(|dirs| Some(dirs.runtime_dir()?.join("auth.json")))
.or_else(|| {
let dirs = directories::BaseDirs::new()?;
Some(dirs.home_dir().join(".ocipkg/config.json"))
})
}
fn docker_auth_path() -> Option<PathBuf> {
let dirs = directories::BaseDirs::new()?;
Some(dirs.home_dir().join(".docker/config.json"))
}
fn podman_auth_path() -> Option<PathBuf> {
let dirs = directories::ProjectDirs::from("", "", "containers")?;
Some(dirs.runtime_dir()?.join("auth.json"))
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct AuthChallenge {
pub url: String,
pub service: String,
pub scope: String,
}
impl AuthChallenge {
pub fn from_header(header: &str) -> Result<Self> {
let err = || Error::UnSupportedAuthHeader(header.to_string());
let (ty, realm) = header.split_once(' ').ok_or_else(err)?;
if ty != "Bearer" {
return Err(err());
}
let mut url = None;
let mut service = None;
let mut scope = None;
for param in realm.split(',') {
let (key, value) = param.split_once('=').ok_or_else(err)?;
let value = value.trim_matches('"').to_string();
match key {
"realm" => url = Some(value),
"service" => service = Some(value),
"scope" => scope = Some(value),
_ => continue,
}
}
Ok(Self {
url: url.ok_or_else(err)?,
service: service.ok_or_else(err)?,
scope: scope.ok_or_else(err)?,
})
}
}
#[derive(Deserialize)]
struct Token {
token: String,
}