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hashlib.rs
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349 lines (297 loc) · 9.52 KB
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pub(crate) use hashlib::make_module;
#[pymodule]
mod hashlib {
use crate::common::lock::{PyRwLock, PyRwLockReadGuard, PyRwLockWriteGuard};
use crate::vm::{
builtins::{PyBytes, PyBytesRef, PyStrRef, PyTypeRef},
function::{FuncArgs, OptionalArg},
PyPayload, PyResult, VirtualMachine,
};
use blake2::{Blake2b512, Blake2s256};
use digest::DynDigest;
use md5::Md5;
use sha1::Sha1;
use sha2::{Sha224, Sha256, Sha384, Sha512};
use sha3::{Sha3_224, Sha3_256, Sha3_384, Sha3_512}; // TODO: , shake_128, shake_256;
#[derive(FromArgs)]
#[allow(unused)]
struct NewHashArgs {
#[pyarg(positional)]
name: PyStrRef,
#[pyarg(any, optional)]
data: OptionalArg<PyBytesRef>,
#[pyarg(named, default = "true")]
usedforsecurity: bool,
}
#[derive(FromArgs)]
#[allow(unused)]
struct BlakeHashArgs {
#[pyarg(positional, optional)]
data: OptionalArg<PyBytesRef>,
#[pyarg(named, default = "true")]
usedforsecurity: bool,
}
#[derive(FromArgs)]
#[allow(unused)]
struct HashArgs {
#[pyarg(any, optional)]
string: OptionalArg<PyBytesRef>,
#[pyarg(named, default = "true")]
usedforsecurity: bool,
}
#[pyattr]
#[pyclass(module = "hashlib", name = "hasher")]
#[derive(PyPayload)]
struct PyHasher {
name: String,
buffer: PyRwLock<HashWrapper>,
}
impl std::fmt::Debug for PyHasher {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(f, "hasher {}", self.name)
}
}
#[pyclass]
impl PyHasher {
fn new(name: &str, d: HashWrapper) -> Self {
PyHasher {
name: name.to_owned(),
buffer: PyRwLock::new(d),
}
}
fn read(&self) -> PyRwLockReadGuard<'_, HashWrapper> {
self.buffer.read()
}
fn write(&self) -> PyRwLockWriteGuard<'_, HashWrapper> {
self.buffer.write()
}
#[pyslot]
fn slot_new(_cls: PyTypeRef, _args: FuncArgs, vm: &VirtualMachine) -> PyResult {
Ok(PyHasher::new("md5", HashWrapper::md5()).into_pyobject(vm))
}
#[pygetset]
fn name(&self) -> String {
self.name.clone()
}
#[pygetset]
fn digest_size(&self) -> usize {
self.read().digest_size()
}
#[pymethod]
fn update(&self, data: PyBytesRef) {
self.write().input(data.as_bytes());
}
#[pymethod]
fn digest(&self) -> PyBytes {
self.get_digest().into()
}
#[pymethod]
fn hexdigest(&self) -> String {
let result = self.get_digest();
hex::encode(result)
}
fn get_digest(&self) -> Vec<u8> {
self.read().get_digest()
}
}
#[pyfunction(name = "new")]
fn hashlib_new(args: NewHashArgs, vm: &VirtualMachine) -> PyResult<PyHasher> {
match args.name.as_str() {
"md5" => md5(HashArgs {
string: args.data,
usedforsecurity: args.usedforsecurity,
}),
"sha1" => sha1(HashArgs {
string: args.data,
usedforsecurity: args.usedforsecurity,
}),
"sha224" => sha224(HashArgs {
string: args.data,
usedforsecurity: args.usedforsecurity,
}),
"sha256" => sha256(HashArgs {
string: args.data,
usedforsecurity: args.usedforsecurity,
}),
"sha384" => sha384(HashArgs {
string: args.data,
usedforsecurity: args.usedforsecurity,
}),
"sha512" => sha512(HashArgs {
string: args.data,
usedforsecurity: args.usedforsecurity,
}),
"sha3_224" => sha3_224(HashArgs {
string: args.data,
usedforsecurity: args.usedforsecurity,
}),
"sha3_256" => sha3_256(HashArgs {
string: args.data,
usedforsecurity: args.usedforsecurity,
}),
"sha3_384" => sha3_384(HashArgs {
string: args.data,
usedforsecurity: args.usedforsecurity,
}),
"sha3_512" => sha3_512(HashArgs {
string: args.data,
usedforsecurity: args.usedforsecurity,
}),
// TODO: "shake_128" => shake_128(args.data, ),
// TODO: "shake_256" => shake_256(args.data, ),
"blake2b" => blake2b(BlakeHashArgs {
data: args.data,
usedforsecurity: args.usedforsecurity,
}),
"blake2s" => blake2s(BlakeHashArgs {
data: args.data,
usedforsecurity: args.usedforsecurity,
}),
other => Err(vm.new_value_error(format!("Unknown hashing algorithm: {}", other))),
}
}
fn init(hasher: PyHasher, data: OptionalArg<PyBytesRef>) -> PyResult<PyHasher> {
if let OptionalArg::Present(data) = data {
hasher.update(data);
}
Ok(hasher)
}
#[pyfunction]
fn md5(args: HashArgs) -> PyResult<PyHasher> {
init(PyHasher::new("md5", HashWrapper::md5()), args.string)
}
#[pyfunction]
fn sha1(args: HashArgs) -> PyResult<PyHasher> {
init(PyHasher::new("sha1", HashWrapper::sha1()), args.string)
}
#[pyfunction]
fn sha224(args: HashArgs) -> PyResult<PyHasher> {
init(PyHasher::new("sha224", HashWrapper::sha224()), args.string)
}
#[pyfunction]
fn sha256(args: HashArgs) -> PyResult<PyHasher> {
init(PyHasher::new("sha256", HashWrapper::sha256()), args.string)
}
#[pyfunction]
fn sha384(args: HashArgs) -> PyResult<PyHasher> {
init(PyHasher::new("sha384", HashWrapper::sha384()), args.string)
}
#[pyfunction]
fn sha512(args: HashArgs) -> PyResult<PyHasher> {
init(PyHasher::new("sha512", HashWrapper::sha512()), args.string)
}
#[pyfunction]
fn sha3_224(args: HashArgs) -> PyResult<PyHasher> {
init(
PyHasher::new("sha3_224", HashWrapper::sha3_224()),
args.string,
)
}
#[pyfunction]
fn sha3_256(args: HashArgs) -> PyResult<PyHasher> {
init(
PyHasher::new("sha3_256", HashWrapper::sha3_256()),
args.string,
)
}
#[pyfunction]
fn sha3_384(args: HashArgs) -> PyResult<PyHasher> {
init(
PyHasher::new("sha3_384", HashWrapper::sha3_384()),
args.string,
)
}
#[pyfunction]
fn sha3_512(args: HashArgs) -> PyResult<PyHasher> {
init(
PyHasher::new("sha3_512", HashWrapper::sha3_512()),
args.string,
)
}
#[pyfunction]
fn shake_128(_args: HashArgs, vm: &VirtualMachine) -> PyResult<PyHasher> {
Err(vm.new_not_implemented_error("shake_256".to_owned()))
}
#[pyfunction]
fn shake_256(_args: HashArgs, vm: &VirtualMachine) -> PyResult<PyHasher> {
Err(vm.new_not_implemented_error("shake_256".to_owned()))
}
#[pyfunction]
fn blake2b(args: BlakeHashArgs) -> PyResult<PyHasher> {
// TODO: handle parameters
init(PyHasher::new("blake2b", HashWrapper::blake2b()), args.data)
}
#[pyfunction]
fn blake2s(args: BlakeHashArgs) -> PyResult<PyHasher> {
// TODO: handle parameters
init(PyHasher::new("blake2s", HashWrapper::blake2s()), args.data)
}
trait ThreadSafeDynDigest: DynDigest + Sync + Send {}
impl<T> ThreadSafeDynDigest for T where T: DynDigest + Sync + Send {}
/// Generic wrapper patching around the hashing libraries.
struct HashWrapper {
inner: Box<dyn ThreadSafeDynDigest>,
}
impl HashWrapper {
fn new<D: 'static>(d: D) -> Self
where
D: ThreadSafeDynDigest,
{
HashWrapper { inner: Box::new(d) }
}
fn md5() -> Self {
Self::new(Md5::default())
}
fn sha1() -> Self {
Self::new(Sha1::default())
}
fn sha224() -> Self {
Self::new(Sha224::default())
}
fn sha256() -> Self {
Self::new(Sha256::default())
}
fn sha384() -> Self {
Self::new(Sha384::default())
}
fn sha512() -> Self {
Self::new(Sha512::default())
}
fn sha3_224() -> Self {
Self::new(Sha3_224::default())
}
fn sha3_256() -> Self {
Self::new(Sha3_256::default())
}
fn sha3_384() -> Self {
Self::new(Sha3_384::default())
}
fn sha3_512() -> Self {
Self::new(Sha3_512::default())
}
/* TODO:
fn shake_128() -> Self {
Self::new(shake_128::default())
}
fn shake_256() -> Self {
Self::new(shake_256::default())
}
*/
fn blake2b() -> Self {
Self::new(Blake2b512::default())
}
fn blake2s() -> Self {
Self::new(Blake2s256::default())
}
fn input(&mut self, data: &[u8]) {
self.inner.update(data);
}
fn digest_size(&self) -> usize {
self.inner.output_size()
}
fn get_digest(&self) -> Vec<u8> {
let cloned = self.inner.box_clone();
cloned.finalize().into_vec()
}
}
}