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|
use std::{
ffi::{CString, c_char},
ptr::{self, null_mut},
};
use mullvad_api::{
RelayListProxy, StatusCode,
rest::{self, Response},
};
#[repr(C)]
pub struct SwiftMullvadApiResponse {
body: *mut u8,
body_size: usize,
etag: *mut c_char,
status_code: u16,
error_description: *mut c_char,
server_response_code: *mut c_char,
success: bool,
}
impl SwiftMullvadApiResponse {
pub async fn with_body(response: Response<hyper::body::Incoming>) -> Result<Self, rest::Error> {
let maybe_etag = RelayListProxy::extract_etag(&response);
let status_code: u16 = response.status().into();
let body: Vec<u8> = response.body().await?;
let body_size = body.len();
let body = body.into_boxed_slice();
let etag = match maybe_etag {
Some(etag) => {
let header_value =
CString::new(etag).map_err(|_| rest::Error::InvalidHeaderError)?;
header_value.into_raw()
}
None => ptr::null_mut(),
};
Ok(Self {
body: Box::<[u8]>::into_raw(body).cast(),
body_size,
etag,
status_code,
error_description: null_mut(),
server_response_code: null_mut(),
success: true,
})
}
pub fn ok() -> Self {
Self {
success: true,
error_description: null_mut(),
body: null_mut(),
body_size: 0,
etag: null_mut(),
status_code: StatusCode::NO_CONTENT.as_u16(),
server_response_code: null_mut(),
}
}
pub fn access_method_error(err: mullvad_api::access_mode::Error) -> Self {
let to_cstr_pointer = |str| {
CString::new(str)
.map(|cstr| cstr.into_raw())
.unwrap_or(null_mut())
};
let error_description = to_cstr_pointer(err.to_string());
Self {
body: null_mut(),
body_size: 0,
etag: null_mut(),
status_code: StatusCode::INTERNAL_SERVER_ERROR.as_u16(),
error_description,
server_response_code: null_mut(),
success: false,
}
}
pub fn rest_error(err: mullvad_api::rest::Error) -> Self {
if err.is_aborted() {
return Self::cancelled();
}
let to_cstr_pointer = |str| {
CString::new(str)
.map(|cstr| cstr.into_raw())
.unwrap_or(null_mut())
};
let error_description = to_cstr_pointer(err.to_string());
let (status_code, server_response_code): (u16, _) =
if let rest::Error::ApiError(status_code, error_code) = err {
(status_code.into(), to_cstr_pointer(error_code))
} else {
(0, null_mut())
};
Self {
body: null_mut(),
body_size: 0,
etag: null_mut(),
status_code,
error_description,
server_response_code,
success: false,
}
}
pub fn cancelled() -> Self {
Self {
success: false,
error_description: c"Request was cancelled".to_owned().into_raw(),
body: null_mut(),
body_size: 0,
etag: null_mut(),
status_code: 0,
server_response_code: null_mut(),
}
}
pub fn no_tokio_runtime() -> Self {
Self {
success: false,
error_description: c"Failed to get Tokio runtime".to_owned().into_raw(),
body: null_mut(),
body_size: 0,
etag: null_mut(),
status_code: 0,
server_response_code: null_mut(),
}
}
}
/// Called by the Swift side to signal that the Rust `SwiftMullvadApiResponse` can be safely
/// dropped from memory.
///
/// # Safety
///
/// `response` must be pointing to a valid instance of `SwiftMullvadApiResponse`. This function
/// is not safe to call multiple times with the same `SwiftMullvadApiResponse`.
#[unsafe(no_mangle)]
pub unsafe extern "C" fn mullvad_response_drop(response: SwiftMullvadApiResponse) {
unsafe {
if !response.body.is_null() {
let _ = Vec::from_raw_parts(response.body, response.body_size, response.body_size);
}
if !response.etag.is_null() {
let _ = CString::from_raw(response.etag);
}
if !response.error_description.is_null() {
let _ = CString::from_raw(response.error_description);
}
if !response.server_response_code.is_null() {
let _ = CString::from_raw(response.server_response_code);
}
}
}
|
