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use std::collections::HashMap;
use std::sync::Arc;
use anyhow::{anyhow, bail, Result};
use async_trait::async_trait;
use crate::config::*;
use crate::cryptoblob::{Key, SecretKey};
use crate::login::*;
use crate::storage;
pub struct StaticLoginProvider {
default_bucket: Option<String>,
users: HashMap<String, Arc<LoginStaticUser>>,
users_by_email: HashMap<String, Arc<LoginStaticUser>>,
k2v_region: Region,
s3_region: Region,
}
impl StaticLoginProvider {
pub fn new(config: LoginStaticConfig, k2v_region: Region, s3_region: Region) -> Result<Self> {
let users = config
.users
.into_iter()
.map(|(k, v)| (k, Arc::new(v)))
.collect::<HashMap<_, _>>();
let mut users_by_email = HashMap::new();
for (_, u) in users.iter() {
for m in u.email_addresses.iter() {
if users_by_email.contains_key(m) {
bail!("Several users have same email address: {}", m);
}
users_by_email.insert(m.clone(), u.clone());
}
}
Ok(Self {
default_bucket: config.default_bucket,
users,
users_by_email,
k2v_region,
s3_region,
})
}
}
#[async_trait]
impl LoginProvider for StaticLoginProvider {
async fn login(&self, username: &str, password: &str) -> Result<Credentials> {
tracing::debug!(user=%username, "login");
let user = match self.users.get(username) {
None => bail!("User {} does not exist", username),
Some(u) => u,
};
tracing::debug!(user=%username, "verify password");
if !verify_password(password, &user.password)? {
bail!("Wrong password");
}
tracing::debug!(user=%username, "fetch bucket");
let bucket = user
.bucket
.clone()
.or_else(|| self.default_bucket.clone())
.ok_or(anyhow!(
"No bucket configured and no default bucket specieid"
))?;
tracing::debug!(user=%username, "fetch keys");
let storage = StorageCredentials {
k2v_region: self.k2v_region.clone(),
s3_region: self.s3_region.clone(),
aws_access_key_id: user.aws_access_key_id.clone(),
aws_secret_access_key: user.aws_secret_access_key.clone(),
bucket,
};
let keys = match (&user.master_key, &user.secret_key) {
(Some(m), Some(s)) => {
let master_key =
Key::from_slice(&base64::decode(m)?).ok_or(anyhow!("Invalid master key"))?;
let secret_key = SecretKey::from_slice(&base64::decode(s)?)
.ok_or(anyhow!("Invalid secret key"))?;
CryptoKeys::open_without_password(&storage, &master_key, &secret_key).await?
}
(None, None) => {
let user_secrets = UserSecrets {
user_secret: user.user_secret.clone(),
alternate_user_secrets: user.alternate_user_secrets.clone(),
};
CryptoKeys::open(&storage, &user_secrets, password).await?
}
_ => bail!(
"Either both master and secret key or none of them must be specified for user"
),
};
tracing::debug!(user=%username, "logged");
Ok(Credentials { storage, keys })
}
async fn public_login(&self, email: &str) -> Result<PublicCredentials> {
let user = match self.users_by_email.get(email) {
None => bail!("No user for email address {}", email),
Some(u) => u,
};
let bucket = user
.bucket
.clone()
.or_else(|| self.default_bucket.clone())
.ok_or(anyhow!(
"No bucket configured and no default bucket specieid"
))?;
let storage = StorageCredentials {
k2v_region: self.k2v_region.clone(),
s3_region: self.s3_region.clone(),
aws_access_key_id: user.aws_access_key_id.clone(),
aws_secret_access_key: user.aws_secret_access_key.clone(),
bucket,
};
let k2v_client = storage.k2v_client()?;
let (_, public_key) = CryptoKeys::load_salt_and_public(&k2v_client).await?;
Ok(PublicCredentials {
storage,
public_key,
})
}
}
pub fn hash_password(password: &str) -> Result<String> {
use argon2::{
password_hash::{rand_core::OsRng, PasswordHasher, SaltString},
Argon2,
};
let salt = SaltString::generate(&mut OsRng);
let argon2 = Argon2::default();
Ok(argon2
.hash_password(password.as_bytes(), &salt)
.map_err(|e| anyhow!("Argon2 error: {}", e))?
.to_string())
}
pub fn verify_password(password: &str, hash: &str) -> Result<bool> {
use argon2::{
password_hash::{PasswordHash, PasswordVerifier},
Argon2,
};
let parsed_hash =
PasswordHash::new(hash).map_err(|e| anyhow!("Invalid hashed password: {}", e))?;
Ok(Argon2::default()
.verify_password(password.as_bytes(), &parsed_hash)
.is_ok())
}
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