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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)]
#[macro_use]
mod exp;
#[macro_use]
mod p11;
pub mod aead;
pub mod agent;
mod agentio;
mod auth;
mod cert;
pub mod constants;
mod err;
pub mod ext;
pub mod hkdf;
pub mod hp;
mod once;
mod prio;
mod replay;
mod secrets;
pub mod selfencrypt;
mod ssl;
mod time;
pub use self::agent::{
Agent, AllowZeroRtt, Client, HandshakeState, Record, RecordList, ResumptionToken, SecretAgent,
SecretAgentInfo, SecretAgentPreInfo, Server, ZeroRttCheckResult, ZeroRttChecker,
};
pub use self::auth::AuthenticationStatus;
pub use self::constants::*;
pub use self::err::{Error, PRErrorCode, Res};
pub use self::ext::{ExtensionHandler, ExtensionHandlerResult, ExtensionWriterResult};
pub use self::p11::{random, SymKey};
pub use self::replay::AntiReplay;
pub use self::secrets::SecretDirection;
pub use self::ssl::Opt;
use self::once::OnceResult;
use std::ffi::CString;
use std::os::raw::c_char;
use std::path::{Path, PathBuf};
use std::ptr::null;
mod nss {
#![allow(clippy::redundant_static_lifetimes, non_upper_case_globals)]
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) {
match self {
Self::NoDb | Self::Db(_) => 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 }
}
/// Initialize NSS. This only executes the initialization routines once, so if there is any chance that
pub fn init() {
// Set time zero.
time::init();
unsafe {
INITIALIZED.call_once(|| {
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");
}
pub fn init_db<P: Into<PathBuf>>(dir: P) {
time::init();
unsafe {
INITIALIZED.call_once(|| {
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).expect("new CString");
let empty = CString::new("").expect("new empty CString");
secstatus_to_res(nss::NSS_Initialize(
dircstr.as_ptr(),
empty.as_ptr(),
empty.as_ptr(),
nss::SECMOD_DB.as_ptr() as *const c_char,
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())
});
}
}
/// Panic if NSS isn't initialized.
pub fn assert_initialized() {
unsafe {
INITIALIZED.call_once(|| {
panic!("NSS not initialized with init or init_db");
});
}
}
|
