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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]
pub mod err;
#[macro_use]
mod exp;
#[macro_use]
mod util;
pub mod p11;
mod prio;
mod ssl;
pub mod time;
pub use err::{Error, IntoResult, secstatus_to_res};
pub use p11::{PrivateKey, PublicKey, SymKey};
pub use util::*;
use once_cell::sync::OnceCell;
use std::ffi::CString;
use std::path::{Path, PathBuf};
use std::ptr::null;
const MINIMUM_NSS_VERSION: &str = "3.74";
#[allow(non_snake_case)]
#[allow(non_upper_case_globals)]
pub mod nss_prelude {
pub use crate::prtypes::*;
pub use _SECStatus::*;
include!(concat!(env!("OUT_DIR"), "/nss_prelude.rs"));
}
pub use nss_prelude::{SECItem, SECItemArray, SECItemType, SECStatus};
#[allow(non_upper_case_globals, clippy::redundant_static_lifetimes)]
#[allow(clippy::upper_case_acronyms)]
#[allow(unknown_lints, clippy::borrow_as_ptr)]
mod nss {
use crate::nss_prelude::*;
include!(concat!(env!("OUT_DIR"), "/nss_init.rs"));
}
pub mod prtypes;
pub use prtypes::*;
// Shadow these bindgen created values to correct their type.
pub const PR_FALSE: PRBool = prtypes::PR_FALSE as PRBool;
pub const PR_TRUE: PRBool = prtypes::PR_TRUE as PRBool;
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 INITIALIZED: OnceCell<NssLoaded> = OnceCell::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 {} not supported",
MINIMUM_NSS_VERSION,
);
}
/// Initialize NSS. This only executes the initialization routines once, so if there is any chance that
pub fn init() {
// Set time zero.
time::init();
INITIALIZED.get_or_init(|| {
unsafe {
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();
INITIALIZED.get_or_init(|| {
unsafe {
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() {
INITIALIZED.get().expect("NSS not initialized with init or init_db");
}
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