vw_small

Hardened fork of Vaultwarden (https://github.com/dani-garcia/vaultwarden) with fewer features.
git clone https://git.philomathiclife.com/repos/vw_small
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commit 69ee4a70b453b81b96347fb299bf5c14f1038156
parent 8ba6e61fd591e7fe038fb13fd24b0e263c87e88a
Author: Jeremy Lin <jeremy.lin@gmail.com>
Date:   Wed, 19 Jan 2022 02:51:26 -0800

Add support for API keys

This is mainly useful for CLI-based login automation.

Diffstat:
Amigrations/mysql/2022-01-17-234911_add_api_key/down.sql | 0
Amigrations/mysql/2022-01-17-234911_add_api_key/up.sql | 2++
Amigrations/postgresql/2022-01-17-234911_add_api_key/down.sql | 0
Amigrations/postgresql/2022-01-17-234911_add_api_key/up.sql | 2++
Amigrations/sqlite/2022-01-17-234911_add_api_key/down.sql | 0
Amigrations/sqlite/2022-01-17-234911_add_api_key/up.sql | 2++
Msrc/api/core/accounts.rs | 39++++++++++++++++++++++++++++++++++++---
Msrc/api/identity.rs | 86++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
Msrc/crypto.rs | 28++++++++++++++++++++++++++++
Msrc/db/models/user.rs | 9++++++++-
Msrc/db/schemas/mysql/schema.rs | 1+
Msrc/db/schemas/postgresql/schema.rs | 1+
Msrc/db/schemas/sqlite/schema.rs | 1+
13 files changed, 164 insertions(+), 7 deletions(-)

diff --git a/migrations/mysql/2022-01-17-234911_add_api_key/down.sql b/migrations/mysql/2022-01-17-234911_add_api_key/down.sql diff --git a/migrations/mysql/2022-01-17-234911_add_api_key/up.sql b/migrations/mysql/2022-01-17-234911_add_api_key/up.sql @@ -0,0 +1,2 @@ +ALTER TABLE users +ADD COLUMN api_key VARCHAR(255); diff --git a/migrations/postgresql/2022-01-17-234911_add_api_key/down.sql b/migrations/postgresql/2022-01-17-234911_add_api_key/down.sql diff --git a/migrations/postgresql/2022-01-17-234911_add_api_key/up.sql b/migrations/postgresql/2022-01-17-234911_add_api_key/up.sql @@ -0,0 +1,2 @@ +ALTER TABLE users +ADD COLUMN api_key TEXT; diff --git a/migrations/sqlite/2022-01-17-234911_add_api_key/down.sql b/migrations/sqlite/2022-01-17-234911_add_api_key/down.sql diff --git a/migrations/sqlite/2022-01-17-234911_add_api_key/up.sql b/migrations/sqlite/2022-01-17-234911_add_api_key/up.sql @@ -0,0 +1,2 @@ +ALTER TABLE users +ADD COLUMN api_key TEXT; diff --git a/src/api/core/accounts.rs b/src/api/core/accounts.rs @@ -34,6 +34,8 @@ pub fn routes() -> Vec<rocket::Route> { password_hint, prelogin, verify_password, + api_key, + rotate_api_key, ] } @@ -647,15 +649,17 @@ fn prelogin(data: JsonUpcase<PreloginData>, conn: DbConn) -> Json<Value> { "KdfIterations": kdf_iter })) } + +// https://github.com/bitwarden/server/blob/master/src/Api/Models/Request/Accounts/SecretVerificationRequestModel.cs #[derive(Deserialize)] #[allow(non_snake_case)] -struct VerifyPasswordData { +struct SecretVerificationRequest { MasterPasswordHash: String, } #[post("/accounts/verify-password", data = "<data>")] -fn verify_password(data: JsonUpcase<VerifyPasswordData>, headers: Headers) -> EmptyResult { - let data: VerifyPasswordData = data.into_inner().data; +fn verify_password(data: JsonUpcase<SecretVerificationRequest>, headers: Headers) -> EmptyResult { + let data: SecretVerificationRequest = data.into_inner().data; let user = headers.user; if !user.check_valid_password(&data.MasterPasswordHash) { @@ -664,3 +668,32 @@ fn verify_password(data: JsonUpcase<VerifyPasswordData>, headers: Headers) -> Em Ok(()) } + +fn _api_key(data: JsonUpcase<SecretVerificationRequest>, rotate: bool, headers: Headers, conn: DbConn) -> JsonResult { + let data: SecretVerificationRequest = data.into_inner().data; + let mut user = headers.user; + + if !user.check_valid_password(&data.MasterPasswordHash) { + err!("Invalid password") + } + + if rotate || user.api_key.is_none() { + user.api_key = Some(crypto::generate_api_key()); + user.save(&conn).expect("Error saving API key"); + } + + Ok(Json(json!({ + "ApiKey": user.api_key, + "Object": "apiKey", + }))) +} + +#[post("/accounts/api-key", data = "<data>")] +fn api_key(data: JsonUpcase<SecretVerificationRequest>, headers: Headers, conn: DbConn) -> JsonResult { + _api_key(data, false, headers, conn) +} + +#[post("/accounts/rotate-api-key", data = "<data>")] +fn rotate_api_key(data: JsonUpcase<SecretVerificationRequest>, headers: Headers, conn: DbConn) -> JsonResult { + _api_key(data, true, headers, conn) +} diff --git a/src/api/identity.rs b/src/api/identity.rs @@ -43,6 +43,13 @@ fn login(data: Form<ConnectData>, conn: DbConn, ip: ClientIp) -> JsonResult { _password_login(data, conn, &ip) } + "client_credentials" => { + _check_is_some(&data.client_id, "client_id cannot be blank")?; + _check_is_some(&data.client_secret, "client_secret cannot be blank")?; + _check_is_some(&data.scope, "scope cannot be blank")?; + + _api_key_login(data, conn, &ip) + } t => err!("Invalid type", t), } } @@ -178,6 +185,75 @@ fn _password_login(data: ConnectData, conn: DbConn, ip: &ClientIp) -> JsonResult Ok(Json(result)) } +fn _api_key_login(data: ConnectData, conn: DbConn, ip: &ClientIp) -> JsonResult { + // Validate scope + let scope = data.scope.as_ref().unwrap(); + if scope != "api" { + err!("Scope not supported") + } + + // Ratelimit the login + crate::ratelimit::check_limit_login(&ip.ip)?; + + // Get the user via the client_id + let client_id = data.client_id.as_ref().unwrap(); + let user_uuid = match client_id.strip_prefix("user.") { + Some(uuid) => uuid, + None => err!("Malformed client_id", format!("IP: {}.", ip.ip)), + }; + let user = match User::find_by_uuid(user_uuid, &conn) { + Some(user) => user, + None => err!("Invalid client_id", format!("IP: {}.", ip.ip)), + }; + + // Check if the user is disabled + if !user.enabled { + err!("This user has been disabled (API key login)", format!("IP: {}. Username: {}.", ip.ip, user.email)) + } + + // Check API key. Note that API key logins bypass 2FA. + let client_secret = data.client_secret.as_ref().unwrap(); + if !user.check_valid_api_key(client_secret) { + err!("Incorrect client_secret", format!("IP: {}. Username: {}.", ip.ip, user.email)) + } + + let (mut device, new_device) = get_device(&data, &conn, &user); + + if CONFIG.mail_enabled() && new_device { + let now = Utc::now().naive_utc(); + if let Err(e) = mail::send_new_device_logged_in(&user.email, &ip.ip.to_string(), &now, &device.name) { + error!("Error sending new device email: {:#?}", e); + + if CONFIG.require_device_email() { + err!("Could not send login notification email. Please contact your administrator.") + } + } + } + + // Common + let orgs = UserOrganization::find_confirmed_by_user(&user.uuid, &conn); + + let (access_token, expires_in) = device.refresh_tokens(&user, orgs); + device.save(&conn)?; + + info!("User {} logged in successfully via API key. IP: {}", user.email, ip.ip); + + Ok(Json(json!({ + "access_token": access_token, + "expires_in": expires_in, + "token_type": "Bearer", + "refresh_token": device.refresh_token, + "Key": user.akey, + "PrivateKey": user.private_key, + + "Kdf": user.client_kdf_type, + "KdfIterations": user.client_kdf_iter, + "ResetMasterPassword": false, // TODO: Same as above + "scope": "api", + "unofficialServer": true, + }))) +} + /// Retrieves an existing device or creates a new device from ConnectData and the User fn get_device(data: &ConnectData, conn: &DbConn, user: &User) -> (Device, bool) { // On iOS, device_type sends "iOS", on others it sends a number @@ -374,17 +450,20 @@ fn _json_err_twofactor(providers: &[i32], user_uuid: &str, conn: &DbConn) -> Api Ok(result) } +// https://github.com/bitwarden/jslib/blob/master/common/src/models/request/tokenRequest.ts // https://github.com/bitwarden/mobile/blob/master/src/Core/Models/Request/TokenRequest.cs #[derive(Debug, Clone, Default)] #[allow(non_snake_case)] struct ConnectData { - grant_type: String, // refresh_token, password + // refresh_token, password, client_credentials (API key) + grant_type: String, // Needed for grant_type="refresh_token" refresh_token: Option<String>, - // Needed for grant_type="password" - client_id: Option<String>, // web, cli, desktop, browser, mobile + // Needed for grant_type = "password" | "client_credentials" + client_id: Option<String>, // web, cli, desktop, browser, mobile + client_secret: Option<String>, // API key login (cli only) password: Option<String>, scope: Option<String>, username: Option<String>, @@ -414,6 +493,7 @@ impl<'f> FromForm<'f> for ConnectData { "granttype" => form.grant_type = value, "refreshtoken" => form.refresh_token = Some(value), "clientid" => form.client_id = Some(value), + "clientsecret" => form.client_secret = Some(value), "password" => form.password = Some(value), "scope" => form.scope = Some(value), "username" => form.username = Some(value), diff --git a/src/crypto.rs b/src/crypto.rs @@ -51,6 +51,28 @@ pub fn get_random(mut array: Vec<u8>) -> Vec<u8> { array } +/// Generates a random string over a specified alphabet. +pub fn get_random_string(alphabet: &[u8], num_chars: usize) -> String { + // Ref: https://rust-lang-nursery.github.io/rust-cookbook/algorithms/randomness.html + use rand::Rng; + let mut rng = rand::thread_rng(); + + (0..num_chars) + .map(|_| { + let i = rng.gen_range(0..alphabet.len()); + alphabet[i] as char + }) + .collect() +} + +/// Generates a random alphanumeric string. +pub fn get_random_string_alphanum(num_chars: usize) -> String { + const ALPHABET: &[u8] = b"ABCDEFGHIJKLMNOPQRSTUVWXYZ\ + abcdefghijklmnopqrstuvwxyz\ + 0123456789"; + get_random_string(ALPHABET, num_chars) +} + pub fn generate_id(num_bytes: usize) -> String { HEXLOWER.encode(&get_random(vec![0; num_bytes])) } @@ -84,6 +106,12 @@ pub fn generate_token(token_size: u32) -> Result<String, Error> { Ok(token) } +/// Generates a personal API key. +/// Upstream uses 30 chars, which is ~178 bits of entropy. +pub fn generate_api_key() -> String { + get_random_string_alphanum(30) +} + // // Constant time compare // diff --git a/src/db/models/user.rs b/src/db/models/user.rs @@ -44,8 +44,9 @@ db_object! { pub client_kdf_type: i32, pub client_kdf_iter: i32, - } + pub api_key: Option<String>, + } #[derive(Identifiable, Queryable, Insertable)] #[table_name = "invitations"] @@ -110,6 +111,8 @@ impl User { client_kdf_type: Self::CLIENT_KDF_TYPE_DEFAULT, client_kdf_iter: Self::CLIENT_KDF_ITER_DEFAULT, + + api_key: None, } } @@ -130,6 +133,10 @@ impl User { } } + pub fn check_valid_api_key(&self, key: &str) -> bool { + matches!(self.api_key, Some(ref api_key) if crate::crypto::ct_eq(api_key, key)) + } + /// Set the password hash generated /// And resets the security_stamp. Based upon the allow_next_route the security_stamp will be different. /// diff --git a/src/db/schemas/mysql/schema.rs b/src/db/schemas/mysql/schema.rs @@ -178,6 +178,7 @@ table! { excluded_globals -> Text, client_kdf_type -> Integer, client_kdf_iter -> Integer, + api_key -> Nullable<Text>, } } diff --git a/src/db/schemas/postgresql/schema.rs b/src/db/schemas/postgresql/schema.rs @@ -178,6 +178,7 @@ table! { excluded_globals -> Text, client_kdf_type -> Integer, client_kdf_iter -> Integer, + api_key -> Nullable<Text>, } } diff --git a/src/db/schemas/sqlite/schema.rs b/src/db/schemas/sqlite/schema.rs @@ -178,6 +178,7 @@ table! { excluded_globals -> Text, client_kdf_type -> Integer, client_kdf_iter -> Integer, + api_key -> Nullable<Text>, } }