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use crate::common::OpType;
use std::collections::BTreeMap;
use std::fs::{create_dir, File};
use std::io::{self, BufReader, BufWriter, ErrorKind, Write};
use std::path::PathBuf;
use std::str::FromStr;
use compact_jwt::{Jws, JwsUnverified};
use dialoguer::theme::ColorfulTheme;
use dialoguer::Select;
use kanidm_client::{ClientError, KanidmClient};
use kanidm_proto::v1::{AuthAllowed, AuthResponse, AuthState, UserAuthToken};
#[cfg(target_family = "unix")]
use libc::umask;
use webauthn_authenticator_rs::prelude::RequestChallengeResponse;
use crate::common::prompt_for_username_get_username;
use crate::webauthn::get_authenticator;
use crate::{LoginOpt, LogoutOpt, ReauthOpt, SessionOpt};
static TOKEN_DIR: &str = "~/.cache";
static TOKEN_PATH: &str = "~/.cache/kanidm_tokens";
#[allow(clippy::result_unit_err)]
pub fn read_tokens() -> Result<BTreeMap<String, String>, ()> {
let token_path = PathBuf::from(shellexpand::tilde(TOKEN_PATH).into_owned());
if !token_path.exists() {
debug!(
"Token cache file path {:?} does not exist, returning an empty token store.",
TOKEN_PATH
);
return Ok(BTreeMap::new());
}
debug!("Attempting to read tokens from {:?}", &token_path);
let file = match File::open(&token_path) {
Ok(f) => f,
Err(e) => {
match e.kind() {
ErrorKind::PermissionDenied => {
error!(
"Permission denied reading token store file {:?}",
&token_path
);
return Err(());
}
_ => {
warn!(
"Cannot read tokens from {} due to error: {:?} ... continuing.",
TOKEN_PATH, e
);
return Ok(BTreeMap::new());
}
};
}
};
let reader = BufReader::new(file);
serde_json::from_reader(reader).map_err(|e| {
error!(
"JSON/IO error reading tokens from {:?} -> {:?}",
&token_path, e
);
})
}
#[allow(clippy::result_unit_err)]
pub fn write_tokens(tokens: &BTreeMap<String, String>) -> Result<(), ()> {
let token_dir = PathBuf::from(shellexpand::tilde(TOKEN_DIR).into_owned());
let token_path = PathBuf::from(shellexpand::tilde(TOKEN_PATH).into_owned());
token_dir
.parent()
.ok_or_else(|| {
error!(
"Parent directory to {} is invalid (root directory?).",
TOKEN_DIR
);
})
.and_then(|parent_dir| {
if parent_dir.exists() {
Ok(())
} else {
error!("Parent directory to {} does not exist.", TOKEN_DIR);
Err(())
}
})?;
if !token_dir.exists() {
create_dir(token_dir).map_err(|e| {
error!("Unable to create directory - {} {:?}", TOKEN_DIR, e);
})?;
}
#[cfg(target_family = "unix")]
let before = unsafe { umask(0o177) };
let file = File::create(&token_path).map_err(|e| {
#[cfg(target_family = "unix")]
let _ = unsafe { umask(before) };
error!("Can not write to {} -> {:?}", TOKEN_PATH, e);
})?;
#[cfg(target_family = "unix")]
let _ = unsafe { umask(before) };
let writer = BufWriter::new(file);
serde_json::to_writer_pretty(writer, tokens).map_err(|e| {
error!(
"JSON/IO error writing tokens to file {:?} -> {:?}",
&token_path, e
);
})
}
fn get_index_choice_dialoguer(msg: &str, options: &[String]) -> usize {
let user_select = Select::with_theme(&ColorfulTheme::default())
.with_prompt(msg)
.default(0)
.items(options)
.interact();
let selection = match user_select {
Err(error) => {
error!("Failed to handle user input: {:?}", error);
std::process::exit(1);
}
Ok(value) => value,
};
debug!("Index of the chosen menu item: {:?}", selection);
selection
}
async fn do_password(
client: &mut KanidmClient,
password: &Option<String>,
) -> Result<AuthResponse, ClientError> {
let password = match password {
Some(password) => {
trace!("User provided password directly, don't need to prompt.");
password.to_owned()
}
None => rpassword::prompt_password("Enter password: ").unwrap_or_else(|e| {
error!("Failed to create password prompt -- {:?}", e);
std::process::exit(1);
}),
};
client.auth_step_password(password.as_str()).await
}
async fn do_backup_code(client: &mut KanidmClient) -> Result<AuthResponse, ClientError> {
print!("Enter Backup Code: ");
#[allow(clippy::unwrap_used)]
io::stdout().flush().unwrap();
let mut backup_code = String::new();
loop {
if let Err(e) = io::stdin().read_line(&mut backup_code) {
error!("Failed to read from stdin -> {:?}", e);
return Err(ClientError::SystemError);
};
if !backup_code.trim().is_empty() {
break;
};
}
client.auth_step_backup_code(backup_code.trim()).await
}
async fn do_totp(client: &mut KanidmClient) -> Result<AuthResponse, ClientError> {
let totp = loop {
print!("Enter TOTP: ");
if let Err(e) = io::stdout().flush() {
error!("Somehow we failed to flush stdout: {:?}", e);
};
let mut buffer = String::new();
if let Err(e) = io::stdin().read_line(&mut buffer) {
error!("Failed to read from stdin -> {:?}", e);
return Err(ClientError::SystemError);
};
let response = buffer.trim();
match response.parse::<u32>() {
Ok(i) => break i,
Err(_) => eprintln!("Invalid Number"),
};
};
client.auth_step_totp(totp).await
}
async fn do_passkey(
client: &mut KanidmClient,
pkr: RequestChallengeResponse,
) -> Result<AuthResponse, ClientError> {
let mut wa = get_authenticator();
println!("Your authenticator will now flash for you to interact with it.");
let auth = wa
.do_authentication(client.get_origin().clone(), pkr)
.map(Box::new)
.unwrap_or_else(|e| {
error!("Failed to interact with webauthn device. -- {:?}", e);
std::process::exit(1);
});
client.auth_step_passkey_complete(auth).await
}
async fn do_securitykey(
client: &mut KanidmClient,
pkr: RequestChallengeResponse,
) -> Result<AuthResponse, ClientError> {
let mut wa = get_authenticator();
println!("Your authenticator will now flash for you to interact with it.");
let auth = wa
.do_authentication(client.get_origin().clone(), pkr)
.map(Box::new)
.unwrap_or_else(|e| {
error!("Failed to interact with webauthn device. -- {:?}", e);
std::process::exit(1);
});
client.auth_step_securitykey_complete(auth).await
}
async fn process_auth_state(
mut allowed: Vec<AuthAllowed>,
mut client: KanidmClient,
maybe_password: &Option<String>,
) {
loop {
debug!("Allowed mechanisms -> {:?}", allowed);
let choice = match allowed.len() {
0 => {
error!("Error during authentication phase: Server offered no method to proceed");
std::process::exit(1);
}
1 =>
{
#[allow(clippy::expect_used)]
allowed
.get(0)
.expect("can not fail - bounds already checked.")
}
_ => {
let mut options = Vec::new();
for val in allowed.iter() {
options.push(val.to_string());
}
let msg = "Please choose what credential to provide:";
let selection = get_index_choice_dialoguer(msg, &options);
#[allow(clippy::expect_used)]
allowed
.get(selection)
.expect("can not fail - bounds already checked.")
}
};
let res = match choice {
AuthAllowed::Anonymous => client.auth_step_anonymous().await,
AuthAllowed::Password => do_password(&mut client, maybe_password).await,
AuthAllowed::BackupCode => do_backup_code(&mut client).await,
AuthAllowed::Totp => do_totp(&mut client).await,
AuthAllowed::Passkey(chal) => do_passkey(&mut client, chal.clone()).await,
AuthAllowed::SecurityKey(chal) => do_securitykey(&mut client, chal.clone()).await,
};
let state = res
.unwrap_or_else(|e| {
error!("Error in authentication phase: {:?}", e);
std::process::exit(1);
})
.state;
allowed = match &state {
AuthState::Continue(allowed) => allowed.to_vec(),
AuthState::Success(_token) => break,
AuthState::Denied(reason) => {
error!("Authentication Denied: {:?}", reason);
std::process::exit(1);
}
_ => {
error!("Error in authentication phase: invalid authstate");
std::process::exit(1);
}
};
}
let mut tokens = read_tokens().unwrap_or_else(|_| {
error!("Error retrieving authentication token store");
std::process::exit(1);
});
let (username, tonk) = match client.get_token().await {
Some(t) => {
let tonk = match JwsUnverified::from_str(&t).and_then(|jwtu| {
jwtu.validate_embeded()
.map(|jws: Jws<UserAuthToken>| jws.into_inner())
}) {
Ok(uat) => uat,
Err(e) => {
error!("Unable to parse token - {:?}", e);
std::process::exit(1);
}
};
let username = tonk.name().to_string();
(username, t)
}
None => {
error!("Error retrieving client session");
std::process::exit(1);
}
};
tokens.insert(username.clone(), tonk);
if write_tokens(&tokens).is_err() {
error!("Error persisting authentication token store");
std::process::exit(1);
};
println!("Login Success for {}", username);
}
impl LoginOpt {
pub fn debug(&self) -> bool {
self.copt.debug
}
pub async fn exec(&self) {
let client = self.copt.to_unauth_client();
let username = match self.copt.username.as_deref() {
Some(val) => val,
None => {
error!("Please specify a username with -D <USERNAME> to login.");
std::process::exit(1);
}
};
let mechs: Vec<_> = client
.auth_step_init(username)
.await
.unwrap_or_else(|e| {
error!("Error during authentication init phase: {:?}", e);
std::process::exit(1);
})
.into_iter()
.collect();
let mech = match mechs.len() {
0 => {
error!("Error during authentication init phase: Server offered no authentication mechanisms");
std::process::exit(1);
}
1 =>
{
#[allow(clippy::expect_used)]
mechs
.get(0)
.expect("can not fail - bounds already checked.")
}
_ => {
let mut options = Vec::new();
for val in mechs.iter() {
options.push(val.to_string());
}
let msg = "Please choose how you want to authenticate:";
let selection = get_index_choice_dialoguer(msg, &options);
#[allow(clippy::expect_used)]
mechs
.get(selection)
.expect("can not fail - bounds already checked.")
}
};
let allowed = client
.auth_step_begin((*mech).clone())
.await
.unwrap_or_else(|e| {
error!("Error during authentication begin phase: {:?}", e);
std::process::exit(1);
});
process_auth_state(allowed, client, &self.password).await;
}
}
impl ReauthOpt {
pub fn debug(&self) -> bool {
self.copt.debug
}
pub async fn exec(&self) {
let client = self.copt.to_client(OpType::Read).await;
let allowed = client.reauth_begin().await.unwrap_or_else(|e| {
error!("Error during reauthentication begin phase: {:?}", e);
std::process::exit(1);
});
process_auth_state(allowed, client, &None).await;
}
}
impl LogoutOpt {
pub fn debug(&self) -> bool {
self.copt.debug
}
pub async fn exec(&self) {
let username: String = if self.local_only {
let mut _tmp_username = String::new();
match &self.copt.username {
Some(value) => value.clone(),
None => match prompt_for_username_get_username() {
Ok(value) => value,
Err(msg) => {
error!("{}", msg);
std::process::exit(1);
}
},
}
} else {
let client = self.copt.to_client(OpType::Read).await;
let token = match client.get_token().await {
Some(t) => t,
None => {
error!("Client token store is empty/corrupt");
std::process::exit(1);
}
};
if let Err(e) = client.logout().await {
error!("Failed to logout - {:?}", e);
std::process::exit(1);
}
let jwtu = match JwsUnverified::from_str(&token) {
Ok(value) => value,
Err(e) => {
error!(?e, "Unable to parse token from str");
std::process::exit(1);
}
};
let uat: UserAuthToken = match jwtu.validate_embeded() {
Ok(jwt) => jwt.into_inner(),
Err(e) => {
error!(?e, "Unable to verify token signature, may be corrupt");
std::process::exit(1);
}
};
uat.name().to_string()
};
let mut tokens = read_tokens().unwrap_or_else(|_| {
error!("Error retrieving authentication token store");
std::process::exit(1);
});
if tokens.remove(&username).is_some() {
if let Err(_e) = write_tokens(&tokens) {
error!("Error persisting authentication token store");
std::process::exit(1);
};
println!("Removed session for {}", username);
} else {
println!("No sessions for {}", username);
}
}
}
impl SessionOpt {
pub fn debug(&self) -> bool {
match self {
SessionOpt::List(dopt) | SessionOpt::Cleanup(dopt) => dopt.debug,
}
}
fn read_valid_tokens() -> BTreeMap<String, (String, UserAuthToken)> {
read_tokens()
.unwrap_or_else(|_| {
error!("Error retrieving authentication token store");
std::process::exit(1);
})
.into_iter()
.filter_map(|(u, t)| {
let jwtu = JwsUnverified::from_str(&t)
.map_err(|e| {
error!(?e, "Unable to parse token from str");
})
.ok()?;
jwtu.validate_embeded()
.map_err(|e| {
error!(?e, "Unable to verify token signature, may be corrupt");
})
.map(|jwt| {
let uat = jwt.into_inner();
(u, (t, uat))
})
.ok()
})
.collect()
}
pub async fn exec(&self) {
match self {
SessionOpt::List(_) => {
let tokens = Self::read_valid_tokens();
for (_, uat) in tokens.values() {
println!("---");
println!("{}", uat);
}
}
SessionOpt::Cleanup(_) => {
let tokens = Self::read_valid_tokens();
let start_len = tokens.len();
let now = time::OffsetDateTime::now_utc();
let tokens: BTreeMap<_, _> = tokens
.into_iter()
.filter_map(|(u, (t, uat))| {
if let Some(exp) = uat.expiry {
if now >= exp {
None
} else {
Some((u, t))
}
} else {
Some((u, t))
}
})
.collect();
let end_len = tokens.len();
if let Err(_e) = write_tokens(&tokens) {
error!("Error persisting authentication token store");
std::process::exit(1);
};
println!("Removed {} sessions", start_len - end_len);
}
}
}
}