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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![cfg_attr(feature = "deny-warnings", deny(warnings))]
#![warn(clippy::pedantic)]
// Bindgen auto generated code
// won't adhere to the clippy rules below
#![allow(clippy::module_name_repetitions)]
#![allow(clippy::unseparated_literal_suffix)]
#![allow(clippy::used_underscore_binding)]
mod aead;
#[cfg(feature = "fuzzing")]
mod aead_fuzzing;
pub mod agent;
mod agentio;
mod auth;
mod cert;
pub mod constants;
mod ech;
mod err;
#[macro_use]
mod exp;
pub mod ext;
pub mod hkdf;
pub mod hp;
mod once;
#[macro_use]
mod p11;
mod prio;
mod replay;
mod secrets;
pub mod selfencrypt;
mod ssl;
mod time;
use std::{
ffi::CString,
path::{Path, PathBuf},
ptr::null,
};
#[cfg(not(feature = "fuzzing"))]
pub use self::aead::RealAead as Aead;
#[cfg(feature = "fuzzing")]
pub use self::aead::RealAead;
#[cfg(feature = "fuzzing")]
pub use self::aead_fuzzing::FuzzingAead as Aead;
use self::once::OnceResult;
pub use self::{
agent::{
Agent, AllowZeroRtt, Client, HandshakeState, Record, RecordList, ResumptionToken,
SecretAgent, SecretAgentInfo, SecretAgentPreInfo, Server, ZeroRttCheckResult,
ZeroRttChecker,
},
auth::AuthenticationStatus,
constants::*,
ech::{
encode_config as encode_ech_config, generate_keys as generate_ech_keys, AeadId, KdfId,
KemId, SymmetricSuite,
},
err::{Error, PRErrorCode, Res},
ext::{ExtensionHandler, ExtensionHandlerResult, ExtensionWriterResult},
p11::{random, PrivateKey, PublicKey, SymKey},
replay::AntiReplay,
secrets::SecretDirection,
ssl::Opt,
};
const MINIMUM_NSS_VERSION: &str = "3.97";
#[allow(non_upper_case_globals, clippy::redundant_static_lifetimes)]
#[allow(clippy::upper_case_acronyms)]
#[allow(unknown_lints, clippy::borrow_as_ptr)]
mod nss {
include!(concat!(env!("OUT_DIR"), "/nss_init.rs"));
}
// Need to map the types through.
fn secstatus_to_res(code: nss::SECStatus) -> Res<()> {
crate::err::secstatus_to_res(code as crate::ssl::SECStatus)
}
enum NssLoaded {
External,
NoDb,
Db(Box<Path>),
}
impl Drop for NssLoaded {
fn drop(&mut self) {
if !matches!(self, Self::External) {
unsafe {
secstatus_to_res(nss::NSS_Shutdown()).expect("NSS Shutdown failed");
}
}
}
}
static mut INITIALIZED: OnceResult<NssLoaded> = OnceResult::new();
fn already_initialized() -> bool {
unsafe { nss::NSS_IsInitialized() != 0 }
}
fn version_check() {
let min_ver = CString::new(MINIMUM_NSS_VERSION).unwrap();
assert_ne!(
unsafe { nss::NSS_VersionCheck(min_ver.as_ptr()) },
0,
"Minimum NSS version of {MINIMUM_NSS_VERSION} not supported",
);
}
/// Initialize NSS. This only executes the initialization routines once, so if there is any chance
/// that
///
/// # Panics
///
/// When NSS initialization fails.
pub fn init() {
// Set time zero.
time::init();
unsafe {
INITIALIZED.call_once(|| {
version_check();
if already_initialized() {
return NssLoaded::External;
}
secstatus_to_res(nss::NSS_NoDB_Init(null())).expect("NSS_NoDB_Init failed");
secstatus_to_res(nss::NSS_SetDomesticPolicy()).expect("NSS_SetDomesticPolicy failed");
NssLoaded::NoDb
});
}
}
/// This enables SSLTRACE by calling a simple, harmless function to trigger its
/// side effects. SSLTRACE is not enabled in NSS until a socket is made or
/// global options are accessed. Reading an option is the least impact approach.
/// This allows us to use SSLTRACE in all of our unit tests and programs.
#[cfg(debug_assertions)]
fn enable_ssl_trace() {
let opt = ssl::Opt::Locking.as_int();
let mut v: ::std::os::raw::c_int = 0;
secstatus_to_res(unsafe { ssl::SSL_OptionGetDefault(opt, &mut v) })
.expect("SSL_OptionGetDefault failed");
}
/// Initialize with a database.
///
/// # Panics
///
/// If NSS cannot be initialized.
pub fn init_db<P: Into<PathBuf>>(dir: P) {
time::init();
unsafe {
INITIALIZED.call_once(|| {
version_check();
if already_initialized() {
return NssLoaded::External;
}
let path = dir.into();
assert!(path.is_dir());
let pathstr = path.to_str().expect("path converts to string").to_string();
let dircstr = CString::new(pathstr).unwrap();
let empty = CString::new("").unwrap();
secstatus_to_res(nss::NSS_Initialize(
dircstr.as_ptr(),
empty.as_ptr(),
empty.as_ptr(),
nss::SECMOD_DB.as_ptr().cast(),
nss::NSS_INIT_READONLY,
))
.expect("NSS_Initialize failed");
secstatus_to_res(nss::NSS_SetDomesticPolicy()).expect("NSS_SetDomesticPolicy failed");
secstatus_to_res(ssl::SSL_ConfigServerSessionIDCache(
1024,
0,
0,
dircstr.as_ptr(),
))
.expect("SSL_ConfigServerSessionIDCache failed");
#[cfg(debug_assertions)]
enable_ssl_trace();
NssLoaded::Db(path.into_boxed_path())
});
}
}
/// # Panics
///
/// If NSS isn't initialized.
pub fn assert_initialized() {
unsafe {
INITIALIZED.call_once(|| {
panic!("NSS not initialized with init or init_db");
});
}
}
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