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ssl.rs
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1508 lines (1385 loc) · 51.9 KB
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use crate::vm::{PyObjectRef, VirtualMachine};
pub(crate) fn make_module(vm: &VirtualMachine) -> PyObjectRef {
// if openssl is vendored, it doesn't know the locations of system certificates
#[cfg(feature = "ssl-vendor")]
if let None | Some("0") = option_env!("OPENSSL_NO_VENDOR") {
openssl_probe::init_ssl_cert_env_vars();
}
openssl::init();
let module = _ssl::make_module(vm);
#[cfg(ossl101)]
ossl101::extend_module(vm, &module);
#[cfg(ossl111)]
ossl101::extend_module(vm, &module);
#[cfg(windows)]
windows::extend_module(vm, &module);
module
}
#[allow(non_upper_case_globals)]
#[pymodule]
mod _ssl {
use super::bio;
use crate::{
common::{
ascii,
lock::{
PyMappedRwLockReadGuard, PyMutex, PyRwLock, PyRwLockReadGuard, PyRwLockWriteGuard,
},
},
socket::{self, PySocket},
vm::{
builtins::{PyBaseExceptionRef, PyStrRef, PyType, PyTypeRef, PyWeak},
convert::{ToPyException, ToPyObject},
exceptions,
function::{
ArgBytesLike, ArgCallable, ArgMemoryBuffer, ArgStrOrBytesLike, Either, OptionalArg,
},
stdlib::os::PyPathLike,
types::Constructor,
utils::ToCString,
PyObjectRef, PyPayload, PyRef, PyResult, VirtualMachine,
},
};
use crossbeam_utils::atomic::AtomicCell;
use foreign_types_shared::{ForeignType, ForeignTypeRef};
use openssl::{
asn1::{Asn1Object, Asn1ObjectRef},
error::ErrorStack,
nid::Nid,
ssl::{self, SslContextBuilder, SslOptions, SslVerifyMode},
x509::{self, X509Ref, X509},
};
use openssl_sys as sys;
use std::{
ffi::CStr,
fmt,
io::{Read, Write},
time::Instant,
};
// Constants
#[pyattr]
use sys::{
SSL_OP_NO_SSLv2 as OP_NO_SSLv2,
SSL_OP_NO_SSLv3 as OP_NO_SSLv3,
SSL_OP_NO_TLSv1 as OP_NO_TLSv1,
// TODO: so many more of these
SSL_AD_DECODE_ERROR as ALERT_DESCRIPTION_DECODE_ERROR,
SSL_AD_ILLEGAL_PARAMETER as ALERT_DESCRIPTION_ILLEGAL_PARAMETER,
SSL_AD_UNRECOGNIZED_NAME as ALERT_DESCRIPTION_UNRECOGNIZED_NAME,
// SSL_ERROR_INVALID_ERROR_CODE,
SSL_ERROR_SSL,
// SSL_ERROR_WANT_X509_LOOKUP,
SSL_ERROR_SYSCALL,
SSL_ERROR_WANT_CONNECT,
SSL_ERROR_WANT_READ,
SSL_ERROR_WANT_WRITE,
// #ifdef SSL_OP_SINGLE_ECDH_USE
// SSL_OP_SINGLE_ECDH_USE as OP_SINGLE_ECDH_USE
// #endif
// X509_V_FLAG_CRL_CHECK as VERIFY_CRL_CHECK_LEAF,
// sys::X509_V_FLAG_CRL_CHECK|sys::X509_V_FLAG_CRL_CHECK_ALL as VERIFY_CRL_CHECK_CHAIN
// X509_V_FLAG_X509_STRICT as VERIFY_X509_STRICT,
SSL_ERROR_ZERO_RETURN,
SSL_OP_CIPHER_SERVER_PREFERENCE as OP_CIPHER_SERVER_PREFERENCE,
SSL_OP_NO_TICKET as OP_NO_TICKET,
SSL_OP_SINGLE_DH_USE as OP_SINGLE_DH_USE,
};
// taken from CPython, should probably be kept up to date with their version if it ever changes
#[pyattr]
const _DEFAULT_CIPHERS: &str =
"DEFAULT:!aNULL:!eNULL:!MD5:!3DES:!DES:!RC4:!IDEA:!SEED:!aDSS:!SRP:!PSK";
// #[pyattr] PROTOCOL_SSLv2: u32 = SslVersion::Ssl2 as u32; // unsupported
// #[pyattr] PROTOCOL_SSLv3: u32 = SslVersion::Ssl3 as u32;
#[pyattr]
const PROTOCOL_SSLv23: u32 = SslVersion::Tls as u32;
#[pyattr]
const PROTOCOL_TLS: u32 = SslVersion::Tls as u32;
#[pyattr]
const PROTOCOL_TLS_CLIENT: u32 = SslVersion::TlsClient as u32;
#[pyattr]
const PROTOCOL_TLS_SERVER: u32 = SslVersion::TlsServer as u32;
#[pyattr]
const PROTOCOL_TLSv1: u32 = SslVersion::Tls1 as u32;
#[pyattr]
const PROTO_MINIMUM_SUPPORTED: i32 = ProtoVersion::MinSupported as i32;
#[pyattr]
const PROTO_SSLv3: i32 = ProtoVersion::Ssl3 as i32;
#[pyattr]
const PROTO_TLSv1: i32 = ProtoVersion::Tls1 as i32;
#[pyattr]
const PROTO_TLSv1_1: i32 = ProtoVersion::Tls1_1 as i32;
#[pyattr]
const PROTO_TLSv1_2: i32 = ProtoVersion::Tls1_2 as i32;
#[pyattr]
const PROTO_TLSv1_3: i32 = ProtoVersion::Tls1_3 as i32;
#[pyattr]
const PROTO_MAXIMUM_SUPPORTED: i32 = ProtoVersion::MaxSupported as i32;
#[pyattr]
const OP_ALL: libc::c_ulong = (sys::SSL_OP_ALL & !sys::SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS) as _;
#[pyattr]
const HAS_TLS_UNIQUE: bool = true;
#[pyattr]
const CERT_NONE: u32 = CertRequirements::None as u32;
#[pyattr]
const CERT_OPTIONAL: u32 = CertRequirements::Optional as u32;
#[pyattr]
const CERT_REQUIRED: u32 = CertRequirements::Required as u32;
#[pyattr]
const VERIFY_DEFAULT: u32 = 0;
#[pyattr]
const SSL_ERROR_EOF: u32 = 8; // custom for python
#[pyattr]
const HAS_SNI: bool = true;
#[pyattr]
const HAS_ECDH: bool = false;
#[pyattr]
const HAS_NPN: bool = false;
#[pyattr]
const HAS_ALPN: bool = true;
#[pyattr]
const HAS_SSLv2: bool = true;
#[pyattr]
const HAS_SSLv3: bool = true;
#[pyattr]
const HAS_TLSv1: bool = true;
#[pyattr]
const HAS_TLSv1_1: bool = true;
#[pyattr]
const HAS_TLSv1_2: bool = true;
#[pyattr]
const HAS_TLSv1_3: bool = cfg!(ossl111);
// the openssl version from the API headers
#[pyattr(name = "OPENSSL_VERSION")]
fn openssl_version(_vm: &VirtualMachine) -> &str {
openssl::version::version()
}
#[pyattr(name = "OPENSSL_VERSION_NUMBER")]
fn openssl_version_number(_vm: &VirtualMachine) -> i64 {
openssl::version::number()
}
#[pyattr(name = "OPENSSL_VERSION_INFO")]
fn openssl_version_info(_vm: &VirtualMachine) -> OpensslVersionInfo {
parse_version_info(openssl::version::number())
}
#[pyattr(name = "_OPENSSL_API_VERSION")]
fn _openssl_api_version(_vm: &VirtualMachine) -> OpensslVersionInfo {
let openssl_api_version = i64::from_str_radix(env!("OPENSSL_API_VERSION"), 16).unwrap();
parse_version_info(openssl_api_version)
}
/// An error occurred in the SSL implementation.
#[pyattr(name = "SSLError", once)]
fn ssl_error(vm: &VirtualMachine) -> PyTypeRef {
vm.ctx.new_exception_type(
"ssl",
"SSLError",
Some(vec![vm.ctx.exceptions.os_error.to_owned()]),
)
}
/// A certificate could not be verified.
#[pyattr(name = "SSLCertVerificationError", once)]
fn ssl_cert_verification_error(vm: &VirtualMachine) -> PyTypeRef {
vm.ctx.new_exception_type(
"ssl",
"SSLCertVerificationError",
Some(vec![
ssl_error(vm),
vm.ctx.exceptions.value_error.to_owned(),
]),
)
}
/// SSL/TLS session closed cleanly.
#[pyattr(name = "SSLZeroReturnError", once)]
fn ssl_zero_return_error(vm: &VirtualMachine) -> PyTypeRef {
vm.ctx
.new_exception_type("ssl", "SSLZeroReturnError", Some(vec![ssl_error(vm)]))
}
/// Non-blocking SSL socket needs to read more data before the requested operation can be completed.
#[pyattr(name = "SSLWantReadError", once)]
fn ssl_want_read_error(vm: &VirtualMachine) -> PyTypeRef {
vm.ctx
.new_exception_type("ssl", "SSLWantReadError", Some(vec![ssl_error(vm)]))
}
/// Non-blocking SSL socket needs to write more data before the requested operation can be completed.
#[pyattr(name = "SSLWantWriteError", once)]
fn ssl_want_write_error(vm: &VirtualMachine) -> PyTypeRef {
vm.ctx
.new_exception_type("ssl", "SSLWantWriteError", Some(vec![ssl_error(vm)]))
}
/// System error when attempting SSL operation.
#[pyattr(name = "SSLSyscallError", once)]
fn ssl_syscall_error(vm: &VirtualMachine) -> PyTypeRef {
vm.ctx
.new_exception_type("ssl", "SSLSyscallError", Some(vec![ssl_error(vm)]))
}
/// SSL/TLS connection terminated abruptly.
#[pyattr(name = "SSLEOFError", once)]
fn ssl_eof_error(vm: &VirtualMachine) -> PyTypeRef {
PyType::new_simple_ref("ssl.SSLEOFError", &ssl_error(vm), &vm.ctx).unwrap()
}
type OpensslVersionInfo = (u8, u8, u8, u8, u8);
const fn parse_version_info(mut n: i64) -> OpensslVersionInfo {
let status = (n & 0xF) as u8;
n >>= 4;
let patch = (n & 0xFF) as u8;
n >>= 8;
let fix = (n & 0xFF) as u8;
n >>= 8;
let minor = (n & 0xFF) as u8;
n >>= 8;
let major = (n & 0xFF) as u8;
(major, minor, fix, patch, status)
}
#[derive(Copy, Clone, num_enum::IntoPrimitive, num_enum::TryFromPrimitive, PartialEq)]
#[repr(i32)]
enum SslVersion {
Ssl2,
Ssl3 = 1,
Tls,
Tls1,
// TODO: Tls1_1, Tls1_2 ?
TlsClient = 0x10,
TlsServer,
}
#[derive(Copy, Clone, num_enum::IntoPrimitive, num_enum::TryFromPrimitive)]
#[repr(i32)]
enum ProtoVersion {
MinSupported = -2,
Ssl3 = sys::SSL3_VERSION,
Tls1 = sys::TLS1_VERSION,
Tls1_1 = sys::TLS1_1_VERSION,
Tls1_2 = sys::TLS1_2_VERSION,
#[cfg(ossl111)]
Tls1_3 = sys::TLS1_3_VERSION,
#[cfg(not(ossl111))]
Tls1_3 = 0x304,
MaxSupported = -1,
}
#[derive(num_enum::IntoPrimitive, num_enum::TryFromPrimitive)]
#[repr(i32)]
enum CertRequirements {
None,
Optional,
Required,
}
#[derive(Debug, PartialEq)]
enum SslServerOrClient {
Client,
Server,
}
unsafe fn ptr2obj(ptr: *mut sys::ASN1_OBJECT) -> Option<Asn1Object> {
if ptr.is_null() {
None
} else {
Some(Asn1Object::from_ptr(ptr))
}
}
fn _txt2obj(s: &CStr, no_name: bool) -> Option<Asn1Object> {
unsafe { ptr2obj(sys::OBJ_txt2obj(s.as_ptr(), i32::from(no_name))) }
}
fn _nid2obj(nid: Nid) -> Option<Asn1Object> {
unsafe { ptr2obj(sys::OBJ_nid2obj(nid.as_raw())) }
}
fn obj2txt(obj: &Asn1ObjectRef, no_name: bool) -> Option<String> {
let no_name = i32::from(no_name);
let ptr = obj.as_ptr();
let b = unsafe {
let buflen = sys::OBJ_obj2txt(std::ptr::null_mut(), 0, ptr, no_name);
assert!(buflen >= 0);
if buflen == 0 {
return None;
}
let buflen = buflen as usize;
let mut buf = Vec::<u8>::with_capacity(buflen + 1);
let ret = sys::OBJ_obj2txt(
buf.as_mut_ptr() as *mut libc::c_char,
buf.capacity() as _,
ptr,
no_name,
);
assert!(ret >= 0);
// SAFETY: OBJ_obj2txt initialized the buffer successfully
buf.set_len(buflen);
buf
};
let s = String::from_utf8(b)
.unwrap_or_else(|e| String::from_utf8_lossy(e.as_bytes()).into_owned());
Some(s)
}
type PyNid = (libc::c_int, String, String, Option<String>);
fn obj2py(obj: &Asn1ObjectRef) -> PyNid {
let nid = obj.nid();
(
nid.as_raw(),
nid.short_name().unwrap().to_owned(),
nid.long_name().unwrap().to_owned(),
obj2txt(obj, true),
)
}
#[derive(FromArgs)]
struct Txt2ObjArgs {
txt: PyStrRef,
#[pyarg(any, default = "false")]
name: bool,
}
#[pyfunction]
fn txt2obj(args: Txt2ObjArgs, vm: &VirtualMachine) -> PyResult<PyNid> {
_txt2obj(&args.txt.to_cstring(vm)?, !args.name)
.as_deref()
.map(obj2py)
.ok_or_else(|| vm.new_value_error(format!("unknown object '{}'", args.txt)))
}
#[pyfunction]
fn nid2obj(nid: libc::c_int, vm: &VirtualMachine) -> PyResult<PyNid> {
_nid2obj(Nid::from_raw(nid))
.as_deref()
.map(obj2py)
.ok_or_else(|| vm.new_value_error(format!("unknown NID {nid}")))
}
#[pyfunction]
fn get_default_verify_paths() -> (String, String, String, String) {
macro_rules! convert {
($f:ident) => {
CStr::from_ptr(sys::$f()).to_string_lossy().into_owned()
};
}
unsafe {
(
convert!(X509_get_default_cert_file_env),
convert!(X509_get_default_cert_file),
convert!(X509_get_default_cert_dir_env),
convert!(X509_get_default_cert_dir),
)
}
}
#[pyfunction(name = "RAND_status")]
fn rand_status() -> i32 {
unsafe { sys::RAND_status() }
}
#[pyfunction(name = "RAND_add")]
fn rand_add(string: ArgStrOrBytesLike, entropy: f64) {
let f = |b: &[u8]| {
for buf in b.chunks(libc::c_int::max_value() as usize) {
unsafe { sys::RAND_add(buf.as_ptr() as *const _, buf.len() as _, entropy) }
}
};
f(&string.borrow_bytes())
}
#[pyfunction(name = "RAND_bytes")]
fn rand_bytes(n: i32, vm: &VirtualMachine) -> PyResult<Vec<u8>> {
if n < 0 {
return Err(vm.new_value_error("num must be positive".to_owned()));
}
let mut buf = vec![0; n as usize];
openssl::rand::rand_bytes(&mut buf).map_err(|e| convert_openssl_error(vm, e))?;
Ok(buf)
}
#[pyfunction(name = "RAND_pseudo_bytes")]
fn rand_pseudo_bytes(n: i32, vm: &VirtualMachine) -> PyResult<(Vec<u8>, bool)> {
if n < 0 {
return Err(vm.new_value_error("num must be positive".to_owned()));
}
let mut buf = vec![0; n as usize];
let ret = unsafe { sys::RAND_bytes(buf.as_mut_ptr(), n) };
match ret {
0 | 1 => Ok((buf, ret == 1)),
_ => Err(convert_openssl_error(vm, ErrorStack::get())),
}
}
#[pyattr]
#[pyclass(module = "ssl", name = "_SSLContext")]
#[derive(PyPayload)]
struct PySslContext {
ctx: PyRwLock<SslContextBuilder>,
check_hostname: AtomicCell<bool>,
protocol: SslVersion,
post_handshake_auth: PyMutex<bool>,
}
impl fmt::Debug for PySslContext {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.pad("_SSLContext")
}
}
fn builder_as_ctx(x: &SslContextBuilder) -> &ssl::SslContextRef {
unsafe { ssl::SslContextRef::from_ptr(x.as_ptr()) }
}
impl Constructor for PySslContext {
type Args = i32;
fn py_new(cls: PyTypeRef, proto_version: Self::Args, vm: &VirtualMachine) -> PyResult {
let proto = SslVersion::try_from(proto_version)
.map_err(|_| vm.new_value_error("invalid protocol version".to_owned()))?;
let method = match proto {
// SslVersion::Ssl3 => unsafe { ssl::SslMethod::from_ptr(sys::SSLv3_method()) },
SslVersion::Tls => ssl::SslMethod::tls(),
// TODO: Tls1_1, Tls1_2 ?
SslVersion::TlsClient => ssl::SslMethod::tls_client(),
SslVersion::TlsServer => ssl::SslMethod::tls_server(),
_ => return Err(vm.new_value_error("invalid protocol version".to_owned())),
};
let mut builder =
SslContextBuilder::new(method).map_err(|e| convert_openssl_error(vm, e))?;
#[cfg(target_os = "android")]
android::load_client_ca_list(vm, &mut builder)?;
let check_hostname = proto == SslVersion::TlsClient;
builder.set_verify(if check_hostname {
SslVerifyMode::PEER | SslVerifyMode::FAIL_IF_NO_PEER_CERT
} else {
SslVerifyMode::NONE
});
let mut options = SslOptions::ALL & !SslOptions::DONT_INSERT_EMPTY_FRAGMENTS;
if proto != SslVersion::Ssl2 {
options |= SslOptions::NO_SSLV2;
}
if proto != SslVersion::Ssl3 {
options |= SslOptions::NO_SSLV3;
}
options |= SslOptions::NO_COMPRESSION;
options |= SslOptions::CIPHER_SERVER_PREFERENCE;
options |= SslOptions::SINGLE_DH_USE;
options |= SslOptions::SINGLE_ECDH_USE;
builder.set_options(options);
let mode = ssl::SslMode::ACCEPT_MOVING_WRITE_BUFFER | ssl::SslMode::AUTO_RETRY;
builder.set_mode(mode);
#[cfg(ossl111)]
unsafe {
sys::SSL_CTX_set_post_handshake_auth(builder.as_ptr(), 0);
}
builder
.set_session_id_context(b"Python")
.map_err(|e| convert_openssl_error(vm, e))?;
PySslContext {
ctx: PyRwLock::new(builder),
check_hostname: AtomicCell::new(check_hostname),
protocol: proto,
post_handshake_auth: PyMutex::new(false),
}
.into_ref_with_type(vm, cls)
.map(Into::into)
}
}
#[pyclass(flags(BASETYPE), with(Constructor))]
impl PySslContext {
fn builder(&self) -> PyRwLockWriteGuard<'_, SslContextBuilder> {
self.ctx.write()
}
fn ctx(&am
4F40
p;self) -> PyMappedRwLockReadGuard<'_, ssl::SslContextRef> {
PyRwLockReadGuard::map(self.ctx.read(), builder_as_ctx)
}
#[pygetset]
fn post_handshake_auth(&self) -> bool {
*self.post_handshake_auth.lock()
}
#[pygetset(setter)]
fn set_post_handshake_auth(
&self,
value: Option<PyObjectRef>,
vm: &VirtualMachine,
) -> PyResult<()> {
let value = value
.ok_or_else(|| vm.new_attribute_error("cannot delete attribute".to_owned()))?;
*self.post_handshake_auth.lock() = value.is_true(vm)?;
Ok(())
}
#[pymethod]
fn set_ciphers(&self, cipherlist: PyStrRef, vm: &VirtualMachine) -> PyResult<()> {
let ciphers = cipherlist.as_str();
if ciphers.contains('\0') {
return Err(exceptions::cstring_error(vm));
}
self.builder().set_cipher_list(ciphers).map_err(|_| {
vm.new_exception_msg(ssl_error(vm), "No cipher can be selected.".to_owned())
})
}
#[pygetset]
fn options(&self) -> libc::c_ulong {
self.ctx.read().options().bits()
}
#[pygetset(setter)]
fn set_options(&self, opts: libc::c_ulong) {
self.builder()
.set_options(SslOptions::from_bits_truncate(opts));
}
#[pygetset]
fn protocol(&self) -> i32 {
self.protocol as i32
}
#[pygetset]
fn verify_mode(&self) -> i32 {
let mode = self.ctx().verify_mode();
if mode == SslVerifyMode::NONE {
CertRequirements::None.into()
} else if mode == SslVerifyMode::PEER {
CertRequirements::Optional.into()
} else if mode == SslVerifyMode::PEER | SslVerifyMode::FAIL_IF_NO_PEER_CERT {
CertRequirements::Required.into()
} else {
unreachable!()
}
}
#[pygetset(setter)]
fn set_verify_mode(&self, cert: i32, vm: &VirtualMachine) -> PyResult<()> {
let mut ctx = self.builder();
let cert_req = CertRequirements::try_from(cert)
.map_err(|_| vm.new_value_error("invalid value for verify_mode".to_owned()))?;
let mode = match cert_req {
CertRequirements::None if self.check_hostname.load() => {
return Err(vm.new_value_error(
"Cannot set verify_mode to CERT_NONE when check_hostname is enabled."
.to_owned(),
))
}
CertRequirements::None => SslVerifyMode::NONE,
CertRequirements::Optional => SslVerifyMode::PEER,
CertRequirements::Required => {
SslVerifyMode::PEER | SslVerifyMode::FAIL_IF_NO_PEER_CERT
}
};
ctx.set_verify(mode);
Ok(())
}
#[pygetset]
fn check_hostname(&self) -> bool {
self.check_hostname.load()
}
#[pygetset(setter)]
fn set_check_hostname(&self, ch: bool) {
let mut ctx = self.builder();
if ch && builder_as_ctx(&ctx).verify_mode() == SslVerifyMode::NONE {
ctx.set_verify(SslVerifyMode::PEER | SslVerifyMode::FAIL_IF_NO_PEER_CERT);
}
self.check_hostname.store(ch);
}
#[pymethod]
fn set_default_verify_paths(&self, vm: &VirtualMachine) -> PyResult<()> {
self.builder()
.set_default_verify_paths()
.map_err(|e| convert_openssl_error(vm, e))
}
#[pymethod]
fn _set_alpn_protocols(&self, protos: ArgBytesLike, vm: &VirtualMachine) -> PyResult<()> {
#[cfg(ossl102)]
{
let mut ctx = self.builder();
let server = protos.with_ref(|pbuf| {
if pbuf.len() > libc::c_uint::MAX as usize {
return Err(vm.new_overflow_error(format!(
"protocols longer than {} bytes",
libc::c_uint::MAX
)));
}
ctx.set_alpn_protos(pbuf)
.map_err(|e| convert_openssl_error(vm, e))?;
Ok(pbuf.to_vec())
})?;
ctx.set_alpn_select_callback(move |_, client| {
ssl::select_next_proto(&server, client).ok_or(ssl::AlpnError::NOACK)
});
Ok(())
}
#[cfg(not(ossl102))]
{
Err(vm.new_not_implemented_error(
"The NPN extension requires OpenSSL 1.0.1 or later.".to_owned(),
))
}
}
#[pymethod]
fn load_verify_locations(
&self,
args: LoadVerifyLocationsArgs,
vm: &VirtualMachine,
) -> PyResult<()> {
if let (None, None, None) = (&args.cafile, &args.capath, &args.cadata) {
return Err(
vm.new_type_error("cafile, capath and cadata cannot be all omitted".to_owned())
);
}
if let Some(cadata) = args.cadata {
let certs = match cadata {
Either::A(s) => {
if !s.is_ascii() {
return Err(vm.new_type_error("Must be an ascii string".to_owned()));
}
X509::stack_from_pem(s.as_str().as_bytes())
}
Either::B(b) => b.with_ref(x509_stack_from_der),
};
let certs = certs.map_err(|e| convert_openssl_error(vm, e))?;
let mut ctx = self.builder();
let store = ctx.cert_store_mut();
for cert in certs {
store
.add_cert(cert)
.map_err(|e| convert_openssl_error(vm, e))?;
}
}
if args.cafile.is_some() || args.capath.is_some() {
let cafile = args.cafile.map(|s| s.to_cstring(vm)).transpose()?;
let capath = args.capath.map(|s| s.to_cstring(vm)).transpose()?;
let ret = unsafe {
let ctx = self.ctx.write();
sys::SSL_CTX_load_verify_locations(
ctx.as_ptr(),
cafile
.as_ref()
.map_or_else(std::ptr::null, |cs| cs.as_ptr()),
capath
.as_ref()
.map_or_else(std::ptr::null, |cs| cs.as_ptr()),
)
};
if ret != 1 {
let errno = std::io::Error::last_os_error().raw_os_error().unwrap();
let err = if errno != 0 {
crate::vm::stdlib::os::errno_err(vm)
} else {
convert_openssl_error(vm, ErrorStack::get())
};
return Err(err);
}
}
Ok(())
}
#[pymethod]
fn get_ca_certs(
&self,
binary_form: OptionalArg<bool>,
vm: &VirtualMachine,
) -> PyResult<Vec<PyObjectRef>> {
let binary_form = binary_form.unwrap_or(false);
let certs = self
.ctx()
.cert_store()
.objects()
.iter()
.filter_map(|obj| obj.x509())
.map(|cert| cert_to_py(vm, cert, binary_form))
.collect::<Result<Vec<_>, _>>()?;
Ok(certs)
}
#[pymethod]
fn load_cert_chain(&self, args: LoadCertChainArgs, vm: &VirtualMachine) -> PyResult<()> {
let LoadCertChainArgs {
certfile,
keyfile,
password,
} = args;
// TODO: requires passing a callback to C
if password.is_some() {
return Err(
vm.new_not_implemented_error("password arg not yet supported".to_owned())
);
}
let mut ctx = self.builder();
ctx.set_certificate_chain_file(&certfile)
.and_then(|()| {
ctx.set_private_key_file(
keyfile.as_ref().unwrap_or(&certfile),
ssl::SslFiletype::PEM,
)
})
.and_then(|()| ctx.check_private_key())
.map_err(|e| convert_openssl_error(vm, e))
}
#[pymethod]
fn _wrap_socket(
zelf: PyRef<Self>,
args: WrapSocketArgs,
vm: &VirtualMachine,
) -> PyResult<PySslSocket> {
let mut ssl = ssl::Ssl::new(&zelf.ctx()).map_err(|e| convert_openssl_error(vm, e))?;
let socket_type = if args.server_side {
ssl.set_accept_state();
SslServerOrClient::Server
} else {
ssl.set_connect_state();
SslServerOrClient::Client
};
if let Some(hostname) = &args.server_hostname {
let hostname = hostname.as_str();
if hostname.is_empty() || hostname.starts_with('.') {
return Err(vm.new_value_error(
"server_hostname cannot be an empty string or start with a leading dot."
.to_owned(),
));
}
let ip = hostname.parse::<std::net::IpAddr>();
if ip.is_err() {
ssl.set_hostname(hostname)
.map_err(|e| convert_openssl_error(vm, e))?;
}
if zelf.check_hostname.load() {
if let Ok(
4F40
ip) = ip {
ssl.param_mut()
.set_ip(ip)
.map_err(|e| convert_openssl_error(vm, e))?;
} else {
ssl.param_mut()
.set_host(hostname)
.map_err(|e| convert_openssl_error(vm, e))?;
}
}
}
let stream = ssl::SslStream::new(ssl, SocketStream(args.sock.clone()))
.map_err(|e| convert_openssl_error(vm, e))?;
// TODO: use this
let _ = args.session;
Ok(PySslSocket {
ctx: zelf,
stream: PyRwLock::new(stream),
socket_type,
server_hostname: args.server_hostname,
owner: PyRwLock::new(args.owner.map(|o| o.downgrade(None, vm)).transpose()?),
})
}
}
#[derive(FromArgs)]
struct WrapSocketArgs {
sock: PyRef<PySocket>,
server_side: bool,
#[pyarg(any, default)]
server_hostname: Option<PyStrRef>,
#[pyarg(named, default)]
owner: Option<PyObjectRef>,
#[pyarg(named, default)]
session: Option<PyObjectRef>,
}
#[derive(FromArgs)]
struct LoadVerifyLocationsArgs {
#[pyarg(any, default)]
cafile: Option<PyStrRef>,
#[pyarg(any, default)]
capath: Option<PyStrRef>,
#[pyarg(any, default)]
cadata: Option<Either<PyStrRef, ArgBytesLike>>,
}
#[derive(FromArgs)]
struct LoadCertChainArgs {
certfile: PyPathLike,
#[pyarg(any, optional)]
keyfile: Option<PyPathLike>,
#[pyarg(any, optional)]
password: Option<Either<PyStrRef, ArgCallable>>,
}
// Err is true if the socket is blocking
type SocketDeadline = Result<Instant, bool>;
enum SelectRet {
Nonblocking,
TimedOut,
IsBlocking,
Closed,
Ok,
}
#[derive(Clone, Copy)]
enum SslNeeds {
Read,
Write,
}
struct SocketStream(PyRef<PySocket>);
impl SocketStream {
fn timeout_deadline(&self) -> SocketDeadline {
self.0.get_timeout().map(|d| Instant::now() + d)
}
fn select(&self, needs: SslNeeds, deadline: &SocketDeadline) -> SelectRet {
let sock = match self.0.sock_opt() {
Some(s) => s,
None => return SelectRet::Closed,
};
let deadline = match &deadline {
Ok(deadline) => match deadline.checked_duration_since(Instant::now()) {
Some(deadline) => deadline,
None => return SelectRet::TimedOut,
},
Err(true) => return SelectRet::IsBlocking,
Err(false) => return SelectRet::Nonblocking,
};
let res = socket::sock_select(
&sock,
match needs {
SslNeeds::Read => socket::SelectKind::Read,
SslNeeds::Write => socket::SelectKind::Write,
},
Some(deadline),
);
match res {
Ok(true) => SelectRet::TimedOut,
_ => SelectRet::Ok,
}
}
fn socket_needs(
&self,
err: &ssl::Error,
deadline: &SocketDeadline,
) -> (Option<SslNeeds>, SelectRet) {
let needs = match err.code() {
ssl::ErrorCode::WANT_READ => Some(SslNeeds::Read),
ssl::ErrorCode::WANT_WRITE => Some(SslNeeds::Write),
_ => None,
};
let state = needs.map_or(SelectRet::Ok, |needs| self.select(needs, deadline));
(needs, state)
}
}
fn socket_closed_error(vm: &VirtualMachine) -> PyBaseExceptionRef {
vm.new_exception_msg(
ssl_error(vm),
"Underlying socket has been closed.".to_owned(),
)
}
#[pyattr]
#[pyclass(module = "ssl", name = "_SSLSocket")]
#[derive(PyPayload)]
struct PySslSocket {
ctx: PyRef<PySslContext>,
stream: PyRwLock<ssl::SslStream<SocketStream>>,
socket_type: SslServerOrClient,
server_hostname: Option<PyStrRef>,
owner: PyRwLock<Option<PyRef<PyWeak>>>,
}
impl fmt::Debug for PySslSocket {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.pad("_SSLSocket")
}
}
#[pyclass]
impl PySslSocket {
#[pygetset]
fn owner(&self) -> Option<PyObjectRef> {
self.owner.read().as_ref().and_then(|weak| weak.upgrade())
}
#[pygetset(setter)]
fn set_owner(&self, owner: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
let mut lock = self.owner.write();
lock.take();
*lock = Some(owner.downgrade(None, vm)?);
Ok(())
}
#[pygetset]
fn server_side(&self) -> bool {
self.socket_type == SslServerOrClient::Server
}
#[pygetset]
fn context(&self) -> PyRef<PySslContext> {
self.ctx.clone()
}
#[pygetset]
fn server_hostname(&self) -> Option<PyStrRef> {
self.server_hostname.clone()
}
#[pymethod]
fn getpeercert(
&self,
binary: OptionalArg<bool>,
vm: &VirtualMachine,
) -> PyResult<Option<PyObjectRef>> {
let binary = binary.unwrap_or(false);
let stream = self.stream.read();
if !stream.ssl().is_init_finished() {
return Err(vm.new_value_error("handshake not done yet".to_owned()));
}
stream
.ssl()
.peer_certificate()
.map(|cert| cert_to_py(vm, &cert, binary))
.transpose()
}
#[pymethod]
fn version(&self) -> Option<&'static str> {
let v = self.stream.read().ssl().version_str();
if v == "unknown" {
None
} else {
Some(v)
}
}
#[pymethod]
fn cipher(&self) -> Option<CipherTuple> {
self.stream
.read()
.ssl()
.current_cipher()
.map(cipher_to_tuple)
}
#[cfg(osslconf = "OPENSSL_NO_COMP")]
#[pymethod]
fn compression(&self) -> Option<&'static str> {
None
}
#[cfg(not(osslconf = "OPENSSL_NO_COMP"))]
#[pymethod]
fn compression(&self) -> Option<&'static str> {
let stream = self.stream.read();
let comp_method = unsafe { sys::SSL_get_current_compression(stream.ssl().as_ptr()) };
if comp_method.is_null() {
return None;
}
let typ = unsafe { sys::COMP_get_type(comp_method) };
let nid = Nid::from_raw(typ);
if nid == Nid::UNDEF {
return None;
}
nid.short_name().ok()