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Implemented multiple U2f keys, key names, and compromised checks

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Daniel García 2019-02-14 02:03:37 +01:00
parent 6027b969f5
commit a744b9437a
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GPG key ID: FC8A7D14C3CD543A
3 changed files with 135 additions and 83 deletions
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208
src/api/core/two_factor.rs
View file

@ -119,7 +119,7 @@ fn disable_twofactor(data: JsonUpcase<DisableTwoFactorData>, headers: Headers, c
err!("Invalid password");
}
let type_ = data.Type.into_i32().expect("Invalid type");
let type_ = data.Type.into_i32()?;
if let Some(twofactor) = TwoFactor::find_by_user_and_type(&user.uuid, type_, &conn) {
twofactor.delete(&conn)?;
@ -174,10 +174,7 @@ fn activate_authenticator(data: JsonUpcase<EnableAuthenticatorData>, headers: He
let data: EnableAuthenticatorData = data.into_inner().data;
let password_hash = data.MasterPasswordHash;
let key = data.Key;
let token = match data.Token.into_i32() {
Some(n) => n as u64,
None => err!("Malformed token"),
};
let token = data.Token.into_i32()? as u64;
let mut user = headers.user;
@ -244,19 +241,18 @@ fn generate_u2f(data: JsonUpcase<PasswordData>, headers: Headers, conn: DbConn)
if !CONFIG.domain_set() {
err!("`DOMAIN` environment variable is not set. U2F disabled")
}
let data: PasswordData = data.into_inner().data;
let user = headers.user;
if !user.check_valid_password(&data.MasterPasswordHash) {
if !headers.user.check_valid_password(&data.MasterPasswordHash) {
err!("Invalid password");
}
let u2f_type = TwoFactorType::U2f as i32;
let enabled = TwoFactor::find_by_user_and_type(&user.uuid, u2f_type, &conn).is_some();
let (enabled, keys) = get_u2f_registrations(&headers.user.uuid, &conn)?;
let keys_json: Vec<Value> = keys.iter().map(|r| r.to_json()).collect();
Ok(Json(json!({
"Enabled": enabled,
"Keys": keys_json,
"Object": "twoFactorU2f"
})))
}
@ -264,18 +260,16 @@ fn generate_u2f(data: JsonUpcase<PasswordData>, headers: Headers, conn: DbConn)
#[post("/two-factor/get-u2f-challenge", data = "<data>")]
fn generate_u2f_challenge(data: JsonUpcase<PasswordData>, headers: Headers, conn: DbConn) -> JsonResult {
let data: PasswordData = data.into_inner().data;
let user = headers.user;
if !user.check_valid_password(&data.MasterPasswordHash) {
if !headers.user.check_valid_password(&data.MasterPasswordHash) {
err!("Invalid password");
}
let user_uuid = &user.uuid;
let challenge = _create_u2f_challenge(user_uuid, TwoFactorType::U2fRegisterChallenge, &conn).challenge;
let _type = TwoFactorType::U2fRegisterChallenge;
let challenge = _create_u2f_challenge(&headers.user.uuid, _type, &conn).challenge;
Ok(Json(json!({
"UserId": user.uuid,
"UserId": headers.user.uuid,
"AppId": APP_ID.to_string(),
"Challenge": challenge,
"Version": U2F_VERSION,
@ -291,6 +285,37 @@ struct EnableU2FData {
DeviceResponse: String,
}
// This struct is referenced from the U2F lib
// because it doesn't implement Deserialize
#[derive(Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
#[serde(remote = "Registration")]
struct RegistrationDef {
key_handle: Vec<u8>,
pub_key: Vec<u8>,
attestation_cert: Option<Vec<u8>>,
}
#[derive(Serialize, Deserialize)]
struct U2FRegistration {
id: i32,
name: String,
#[serde(with = "RegistrationDef")]
reg: Registration,
counter: u32,
compromised: bool,
}
impl U2FRegistration {
fn to_json(&self) -> Value {
json!({
"Id": self.id,
"Name": self.name,
"Compromised": self.compromised,
})
}
}
// This struct is copied from the U2F lib
// to add an optional error code
#[derive(Deserialize)]
@ -303,8 +328,8 @@ struct RegisterResponseCopy {
pub error_code: Option<NumberOrString>,
}
impl RegisterResponseCopy {
fn into_response(self) -> RegisterResponse {
impl Into<RegisterResponse> for RegisterResponseCopy {
fn into(self) -> RegisterResponse {
RegisterResponse {
registration_data: self.registration_data,
version: self.version,
@ -331,9 +356,9 @@ fn activate_u2f(data: JsonUpcase<EnableU2FData>, headers: Headers, conn: DbConn)
let challenge: Challenge = serde_json::from_str(&tf_challenge.data)?;
tf_challenge.delete(&conn)?;
let response_copy: RegisterResponseCopy = serde_json::from_str(&data.DeviceResponse)?;
let response: RegisterResponseCopy = serde_json::from_str(&data.DeviceResponse)?;
let error_code = response_copy
let error_code = response
.error_code
.clone()
.map_or("0".into(), NumberOrString::into_string);
@ -342,30 +367,27 @@ fn activate_u2f(data: JsonUpcase<EnableU2FData>, headers: Headers, conn: DbConn)
err!("Error registering U2F token")
}
let response = response_copy.into_response();
let registration = U2F.register_response(challenge.clone(), response.into())?;
let full_registration = U2FRegistration {
id: data.Id.into_i32()?,
name: data.Name,
reg: registration,
compromised: false,
counter: 0,
};
let registration = U2F.register_response(challenge.clone(), response)?;
// TODO: Allow more than one U2F device
let mut registrations = Vec::new();
registrations.push(registration);
let mut regs = get_u2f_registrations(&user.uuid, &conn)?.1;
let tf_registration = TwoFactor::new(
user.uuid.clone(),
TwoFactorType::U2f,
serde_json::to_string(&registrations).unwrap(),
);
tf_registration.save(&conn)?;
// TODO: Check that there is no repeat Id
regs.push(full_registration);
save_u2f_registrations(&user.uuid, &regs, &conn)?;
_generate_recover_code(&mut user, &conn);
let keys_json: Vec<Value> = regs.iter().map(|r| r.to_json()).collect();
Ok(Json(json!({
"Enabled": true,
"Challenge": {
"UserId": user.uuid,
"AppId": APP_ID.to_string(),
"Challenge": challenge,
"Version": U2F_VERSION,
},
"Keys": keys_json,
"Object": "twoFactorU2f"
})))
}
@ -385,52 +407,76 @@ fn _create_u2f_challenge(user_uuid: &str, type_: TwoFactorType, conn: &DbConn) -
challenge
}
// This struct is copied from the U2F lib
// because it doesn't implement Deserialize
#[derive(Serialize, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
struct RegistrationCopy {
pub key_handle: Vec<u8>,
pub pub_key: Vec<u8>,
pub attestation_cert: Option<Vec<u8>>,
fn save_u2f_registrations(user_uuid: &str, regs: &Vec<U2FRegistration>, conn: &DbConn) -> EmptyResult {
TwoFactor::new(user_uuid.into(), TwoFactorType::U2f, serde_json::to_string(regs)?).save(&conn)
}
impl Into<Registration> for RegistrationCopy {
fn into(self) -> Registration {
Registration {
key_handle: self.key_handle,
pub_key: self.pub_key,
attestation_cert: self.attestation_cert,
fn get_u2f_registrations(user_uuid: &str, conn: &DbConn) -> Result<(bool, Vec<U2FRegistration>), Error> {
let type_ = TwoFactorType::U2f as i32;
let (enabled, regs) = match TwoFactor::find_by_user_and_type(user_uuid, type_, conn) {
Some(tf) => (tf.enabled, tf.data),
None => return Ok((false, Vec::new())), // If no data, return empty list
};
let data = match serde_json::from_str(&regs) {
Ok(d) => d,
Err(_) => {
// If error, try old format
let mut old_regs = _old_parse_registrations(&regs);
if old_regs.len() != 1 {
err!("The old U2F format only allows one device")
}
// Convert to new format
let new_regs = vec![U2FRegistration {
id: 1,
name: "Unnamed U2F key".into(),
reg: old_regs.remove(0),
compromised: false,
counter: 0,
}];
// Save new format
save_u2f_registrations(user_uuid, &new_regs, &conn)?;
new_regs
}
}
};
Ok((enabled, data))
}
fn _parse_registrations(registations: &str) -> Vec<Registration> {
let registrations_copy: Vec<RegistrationCopy> =
serde_json::from_str(registations).expect("Can't parse RegistrationCopy data");
fn _old_parse_registrations(registations: &str) -> Vec<Registration> {
#[derive(Deserialize)]
struct Helper(#[serde(with = "RegistrationDef")] Registration);
registrations_copy.into_iter().map(Into::into).collect()
let regs: Vec<Value> = serde_json::from_str(registations).expect("Can't parse Registration data");
regs.into_iter()
.map(|r| serde_json::from_value(r).unwrap())
.map(|Helper(r)| r)
.collect()
}
pub fn generate_u2f_login(user_uuid: &str, conn: &DbConn) -> ApiResult<U2fSignRequest> {
let challenge = _create_u2f_challenge(user_uuid, TwoFactorType::U2fLoginChallenge, conn);
let type_ = TwoFactorType::U2f as i32;
let twofactor = match TwoFactor::find_by_user_and_type(user_uuid, type_, conn) {
Some(tf) => tf,
None => err!("No U2F devices registered"),
};
let registrations: Vec<_> = get_u2f_registrations(user_uuid, conn)?
.1
.into_iter()
.map(|r| r.reg)
.collect();
let registrations = _parse_registrations(&twofactor.data);
let signed_request: U2fSignRequest = U2F.sign_request(challenge, registrations);
if registrations.is_empty() {
err!("No U2F devices registered")
}
Ok(signed_request)
Ok(U2F.sign_request(challenge, registrations))
}
pub fn validate_u2f_login(user_uuid: &str, response: &str, conn: &DbConn) -> EmptyResult {
let challenge_type = TwoFactorType::U2fLoginChallenge as i32;
let u2f_type = TwoFactorType::U2f as i32;
let tf_challenge = TwoFactor::find_by_user_and_type(user_uuid, challenge_type, &conn);
let challenge = match tf_challenge {
@ -441,27 +487,29 @@ pub fn validate_u2f_login(user_uuid: &str, response: &str, conn: &DbConn) -> Emp
}
None => err!("Can't recover login challenge"),
};
let twofactor = match TwoFactor::find_by_user_and_type(user_uuid, u2f_type, conn) {
Some(tf) => tf,
None => err!("No U2F devices registered"),
};
let registrations = _parse_registrations(&twofactor.data);
let response: SignResponse = serde_json::from_str(response)?;
let mut registrations = get_u2f_registrations(user_uuid, conn)?.1;
if registrations.is_empty() {
err!("No U2F devices registered")
}
let mut _counter: u32 = 0;
for registration in registrations {
let response = U2F.sign_response(challenge.clone(), registration, response.clone(), _counter);
for reg in &mut registrations {
let response = U2F.sign_response(challenge.clone(), reg.reg.clone(), response.clone(), reg.counter);
match response {
Ok(new_counter) => {
_counter = new_counter;
info!("O {:#}", new_counter);
reg.counter = new_counter;
save_u2f_registrations(user_uuid, &registrations, &conn)?;
return Ok(());
}
Err(u2f::u2ferror::U2fError::CounterTooLow) => {
reg.compromised = true;
save_u2f_registrations(user_uuid, &registrations, &conn)?;
err!("This device might be compromised!");
}
Err(e) => {
info!("E {:#}", e);
warn!("E {:#}", e);
// break;
}
}

9
src/api/mod.rs
View file

@ -47,10 +47,13 @@ impl NumberOrString {
}
}
fn into_i32(self) -> Option<i32> {
fn into_i32(self) -> ApiResult<i32> {
use std::num::ParseIntError as PIE;
match self {
NumberOrString::Number(n) => Some(n),
NumberOrString::String(s) => s.parse().ok(),
NumberOrString::Number(n) => Ok(n),
NumberOrString::String(s) => s
.parse()
.map_err(|e: PIE| crate::Error::new("Can't convert to number", e.to_string())),
}
}
}

1
src/main.rs
View file

@ -38,6 +38,7 @@ mod mail;
mod util;
pub use config::CONFIG;
pub use error::{Error, MapResult};
fn launch_rocket() {
// Create Rocket object, this stores current log level and sets it's own