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||
<a href="#313" id="313">313</a>
|
||
<a href="#314" id="314">314</a>
|
||
<a href="#315" id="315">315</a>
|
||
<a href="#316" id="316">316</a>
|
||
<a href="#317" id="317">317</a>
|
||
<a href="#318" id="318">318</a>
|
||
<a href="#319" id="319">319</a>
|
||
<a href="#320" id="320">320</a>
|
||
<a href="#321" id="321">321</a>
|
||
<a href="#322" id="322">322</a>
|
||
<a href="#323" id="323">323</a>
|
||
<a href="#324" id="324">324</a>
|
||
<a href="#325" id="325">325</a>
|
||
<a href="#326" id="326">326</a>
|
||
<a href="#327" id="327">327</a>
|
||
<a href="#328" id="328">328</a>
|
||
<a href="#329" id="329">329</a>
|
||
<a href="#330" id="330">330</a>
|
||
<a href="#331" id="331">331</a>
|
||
<a href="#332" id="332">332</a>
|
||
<a href="#333" id="333">333</a>
|
||
<a href="#334" id="334">334</a>
|
||
<a href="#335" id="335">335</a>
|
||
</pre></div><pre class="rust"><code><span class="doccomment">//! Protobuf payload extractor for Actix Web.
|
||
|
||
</span><span class="attr">#![forbid(unsafe_code)]
|
||
#![deny(rust_2018_idioms, nonstandard_style)]
|
||
#![warn(future_incompatible)]
|
||
|
||
</span><span class="kw">use </span>std::{
|
||
fmt,
|
||
future::Future,
|
||
ops::{Deref, DerefMut},
|
||
pin::Pin,
|
||
task::{<span class="self">self</span>, Poll},
|
||
};
|
||
|
||
<span class="kw">use </span>actix_web::{
|
||
body::BoxBody,
|
||
dev::Payload,
|
||
error::PayloadError,
|
||
http::header::{CONTENT_LENGTH, CONTENT_TYPE},
|
||
web::BytesMut,
|
||
Error, FromRequest, HttpMessage, HttpRequest, HttpResponse, HttpResponseBuilder, Responder,
|
||
ResponseError,
|
||
};
|
||
<span class="kw">use </span>derive_more::Display;
|
||
<span class="kw">use </span>futures_util::{
|
||
future::{FutureExt <span class="kw">as _</span>, LocalBoxFuture},
|
||
stream::StreamExt <span class="kw">as _</span>,
|
||
};
|
||
<span class="kw">use </span>prost::{DecodeError <span class="kw">as </span>ProtoBufDecodeError, EncodeError <span class="kw">as </span>ProtoBufEncodeError, Message};
|
||
|
||
<span class="attr">#[derive(Debug, Display)]
|
||
</span><span class="kw">pub enum </span>ProtoBufPayloadError {
|
||
<span class="doccomment">/// Payload size is bigger than 256k
|
||
</span><span class="attr">#[display(fmt = <span class="string">"Payload size is bigger than 256k"</span>)]
|
||
</span>Overflow,
|
||
|
||
<span class="doccomment">/// Content type error
|
||
</span><span class="attr">#[display(fmt = <span class="string">"Content type error"</span>)]
|
||
</span>ContentType,
|
||
|
||
<span class="doccomment">/// Serialize error
|
||
</span><span class="attr">#[display(fmt = <span class="string">"ProtoBuf serialize error: {_0}"</span>)]
|
||
</span>Serialize(ProtoBufEncodeError),
|
||
|
||
<span class="doccomment">/// Deserialize error
|
||
</span><span class="attr">#[display(fmt = <span class="string">"ProtoBuf deserialize error: {_0}"</span>)]
|
||
</span>Deserialize(ProtoBufDecodeError),
|
||
|
||
<span class="doccomment">/// Payload error
|
||
</span><span class="attr">#[display(fmt = <span class="string">"Error that occur during reading payload: {_0}"</span>)]
|
||
</span>Payload(PayloadError),
|
||
}
|
||
|
||
<span class="kw">impl </span>ResponseError <span class="kw">for </span>ProtoBufPayloadError {
|
||
<span class="kw">fn </span>error_response(<span class="kw-2">&</span><span class="self">self</span>) -> HttpResponse {
|
||
<span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
|
||
ProtoBufPayloadError::Overflow => HttpResponse::PayloadTooLarge().into(),
|
||
<span class="kw">_ </span>=> HttpResponse::BadRequest().into(),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl </span>From<PayloadError> <span class="kw">for </span>ProtoBufPayloadError {
|
||
<span class="kw">fn </span>from(err: PayloadError) -> ProtoBufPayloadError {
|
||
ProtoBufPayloadError::Payload(err)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl </span>From<ProtoBufDecodeError> <span class="kw">for </span>ProtoBufPayloadError {
|
||
<span class="kw">fn </span>from(err: ProtoBufDecodeError) -> ProtoBufPayloadError {
|
||
ProtoBufPayloadError::Deserialize(err)
|
||
}
|
||
}
|
||
|
||
<span class="kw">pub struct </span>ProtoBuf<T: Message>(<span class="kw">pub </span>T);
|
||
|
||
<span class="kw">impl</span><T: Message> Deref <span class="kw">for </span>ProtoBuf<T> {
|
||
<span class="kw">type </span>Target = T;
|
||
|
||
<span class="kw">fn </span>deref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>T {
|
||
<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0
|
||
</span>}
|
||
}
|
||
|
||
<span class="kw">impl</span><T: Message> DerefMut <span class="kw">for </span>ProtoBuf<T> {
|
||
<span class="kw">fn </span>deref_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>T {
|
||
<span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0
|
||
</span>}
|
||
}
|
||
|
||
<span class="kw">impl</span><T: Message> fmt::Debug <span class="kw">for </span>ProtoBuf<T>
|
||
<span class="kw">where
|
||
</span>T: fmt::Debug,
|
||
{
|
||
<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result {
|
||
<span class="macro">write!</span>(f, <span class="string">"ProtoBuf: {:?}"</span>, <span class="self">self</span>.<span class="number">0</span>)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><T: Message> fmt::Display <span class="kw">for </span>ProtoBuf<T>
|
||
<span class="kw">where
|
||
</span>T: fmt::Display,
|
||
{
|
||
<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result {
|
||
fmt::Display::fmt(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, f)
|
||
}
|
||
}
|
||
|
||
<span class="kw">pub struct </span>ProtoBufConfig {
|
||
limit: usize,
|
||
}
|
||
|
||
<span class="kw">impl </span>ProtoBufConfig {
|
||
<span class="doccomment">/// Change max size of payload. By default max size is 256Kb
|
||
</span><span class="kw">pub fn </span>limit(<span class="kw-2">&mut </span><span class="self">self</span>, limit: usize) -> <span class="kw-2">&mut </span><span class="self">Self </span>{
|
||
<span class="self">self</span>.limit = limit;
|
||
<span class="self">self
|
||
</span>}
|
||
}
|
||
|
||
<span class="kw">impl </span>Default <span class="kw">for </span>ProtoBufConfig {
|
||
<span class="kw">fn </span>default() -> <span class="self">Self </span>{
|
||
ProtoBufConfig { limit: <span class="number">262_144 </span>}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><T> FromRequest <span class="kw">for </span>ProtoBuf<T>
|
||
<span class="kw">where
|
||
</span>T: Message + Default + <span class="lifetime">'static</span>,
|
||
{
|
||
<span class="kw">type </span>Error = Error;
|
||
<span class="kw">type </span>Future = LocalBoxFuture<<span class="lifetime">'static</span>, <span class="prelude-ty">Result</span><<span class="self">Self</span>, Error>>;
|
||
|
||
<span class="attr">#[inline]
|
||
</span><span class="kw">fn </span>from_request(req: <span class="kw-2">&</span>HttpRequest, payload: <span class="kw-2">&mut </span>Payload) -> <span class="self">Self</span>::Future {
|
||
<span class="kw">let </span>limit = req
|
||
.app_data::<ProtoBufConfig>()
|
||
.map(|c| c.limit)
|
||
.unwrap_or(<span class="number">262_144</span>);
|
||
ProtoBufMessage::new(req, payload)
|
||
.limit(limit)
|
||
.map(<span class="kw">move </span>|res| <span class="kw">match </span>res {
|
||
<span class="prelude-val">Err</span>(e) => <span class="prelude-val">Err</span>(e.into()),
|
||
<span class="prelude-val">Ok</span>(item) => <span class="prelude-val">Ok</span>(ProtoBuf(item)),
|
||
})
|
||
.boxed_local()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><T: Message + Default> Responder <span class="kw">for </span>ProtoBuf<T> {
|
||
<span class="kw">type </span>Body = BoxBody;
|
||
|
||
<span class="kw">fn </span>respond_to(<span class="self">self</span>, <span class="kw">_</span>: <span class="kw-2">&</span>HttpRequest) -> HttpResponse {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>buf = Vec::new();
|
||
<span class="kw">match </span><span class="self">self</span>.<span class="number">0</span>.encode(<span class="kw-2">&mut </span>buf) {
|
||
<span class="prelude-val">Ok</span>(()) => HttpResponse::Ok()
|
||
.content_type(<span class="string">"application/protobuf"</span>)
|
||
.body(buf),
|
||
<span class="prelude-val">Err</span>(err) => HttpResponse::from_error(Error::from(ProtoBufPayloadError::Serialize(err))),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">pub struct </span>ProtoBufMessage<T: Message + Default> {
|
||
limit: usize,
|
||
length: <span class="prelude-ty">Option</span><usize>,
|
||
stream: <span class="prelude-ty">Option</span><Payload>,
|
||
err: <span class="prelude-ty">Option</span><ProtoBufPayloadError>,
|
||
fut: <span class="prelude-ty">Option</span><LocalBoxFuture<<span class="lifetime">'static</span>, <span class="prelude-ty">Result</span><T, ProtoBufPayloadError>>>,
|
||
}
|
||
|
||
<span class="kw">impl</span><T: Message + Default> ProtoBufMessage<T> {
|
||
<span class="doccomment">/// Create `ProtoBufMessage` for request.
|
||
</span><span class="kw">pub fn </span>new(req: <span class="kw-2">&</span>HttpRequest, payload: <span class="kw-2">&mut </span>Payload) -> <span class="self">Self </span>{
|
||
<span class="kw">if </span>req.content_type() != <span class="string">"application/protobuf"
|
||
</span>&& req.content_type() != <span class="string">"application/x-protobuf"
|
||
</span>{
|
||
<span class="kw">return </span>ProtoBufMessage {
|
||
limit: <span class="number">262_144</span>,
|
||
length: <span class="prelude-val">None</span>,
|
||
stream: <span class="prelude-val">None</span>,
|
||
fut: <span class="prelude-val">None</span>,
|
||
err: <span class="prelude-val">Some</span>(ProtoBufPayloadError::ContentType),
|
||
};
|
||
}
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>len = <span class="prelude-val">None</span>;
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(l) = req.headers().get(CONTENT_LENGTH) {
|
||
<span class="kw">if let </span><span class="prelude-val">Ok</span>(s) = l.to_str() {
|
||
<span class="kw">if let </span><span class="prelude-val">Ok</span>(l) = s.parse::<usize>() {
|
||
len = <span class="prelude-val">Some</span>(l)
|
||
}
|
||
}
|
||
}
|
||
|
||
ProtoBufMessage {
|
||
limit: <span class="number">262_144</span>,
|
||
length: len,
|
||
stream: <span class="prelude-val">Some</span>(payload.take()),
|
||
fut: <span class="prelude-val">None</span>,
|
||
err: <span class="prelude-val">None</span>,
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Change max size of payload. By default max size is 256Kb
|
||
</span><span class="kw">pub fn </span>limit(<span class="kw-2">mut </span><span class="self">self</span>, limit: usize) -> <span class="self">Self </span>{
|
||
<span class="self">self</span>.limit = limit;
|
||
<span class="self">self
|
||
</span>}
|
||
}
|
||
|
||
<span class="kw">impl</span><T: Message + Default + <span class="lifetime">'static</span>> Future <span class="kw">for </span>ProtoBufMessage<T> {
|
||
<span class="kw">type </span>Output = <span class="prelude-ty">Result</span><T, ProtoBufPayloadError>;
|
||
|
||
<span class="kw">fn </span>poll(<span class="kw-2">mut </span><span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, task: <span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>) -> Poll<<span class="self">Self</span>::Output> {
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref mut </span>fut) = <span class="self">self</span>.fut {
|
||
<span class="kw">return </span>Pin::new(fut).poll(task);
|
||
}
|
||
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(err) = <span class="self">self</span>.err.take() {
|
||
<span class="kw">return </span>Poll::Ready(<span class="prelude-val">Err</span>(err));
|
||
}
|
||
|
||
<span class="kw">let </span>limit = <span class="self">self</span>.limit;
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(len) = <span class="self">self</span>.length.take() {
|
||
<span class="kw">if </span>len > limit {
|
||
<span class="kw">return </span>Poll::Ready(<span class="prelude-val">Err</span>(ProtoBufPayloadError::Overflow));
|
||
}
|
||
}
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>stream = <span class="self">self
|
||
</span>.stream
|
||
.take()
|
||
.expect(<span class="string">"ProtoBufMessage could not be used second time"</span>);
|
||
|
||
<span class="self">self</span>.fut = <span class="prelude-val">Some</span>(
|
||
<span class="kw">async move </span>{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>body = BytesMut::with_capacity(<span class="number">8192</span>);
|
||
|
||
<span class="kw">while let </span><span class="prelude-val">Some</span>(item) = stream.next().<span class="kw">await </span>{
|
||
<span class="kw">let </span>chunk = item<span class="question-mark">?</span>;
|
||
<span class="kw">if </span>(body.len() + chunk.len()) > limit {
|
||
<span class="kw">return </span><span class="prelude-val">Err</span>(ProtoBufPayloadError::Overflow);
|
||
} <span class="kw">else </span>{
|
||
body.extend_from_slice(<span class="kw-2">&</span>chunk);
|
||
}
|
||
}
|
||
|
||
<span class="prelude-val">Ok</span>(<T>::decode(<span class="kw-2">&mut </span>body)<span class="question-mark">?</span>)
|
||
}
|
||
.boxed_local(),
|
||
);
|
||
<span class="self">self</span>.poll(task)
|
||
}
|
||
}
|
||
|
||
<span class="kw">pub trait </span>ProtoBufResponseBuilder {
|
||
<span class="kw">fn </span>protobuf<T: Message>(<span class="kw-2">&mut </span><span class="self">self</span>, value: T) -> <span class="prelude-ty">Result</span><HttpResponse, Error>;
|
||
}
|
||
|
||
<span class="kw">impl </span>ProtoBufResponseBuilder <span class="kw">for </span>HttpResponseBuilder {
|
||
<span class="kw">fn </span>protobuf<T: Message>(<span class="kw-2">&mut </span><span class="self">self</span>, value: T) -> <span class="prelude-ty">Result</span><HttpResponse, Error> {
|
||
<span class="self">self</span>.insert_header((CONTENT_TYPE, <span class="string">"application/protobuf"</span>));
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>body = Vec::new();
|
||
value
|
||
.encode(<span class="kw-2">&mut </span>body)
|
||
.map_err(ProtoBufPayloadError::Serialize)<span class="question-mark">?</span>;
|
||
|
||
<span class="prelude-val">Ok</span>(<span class="self">self</span>.body(body))
|
||
}
|
||
}
|
||
|
||
<span class="attr">#[cfg(test)]
|
||
</span><span class="kw">mod </span>tests {
|
||
<span class="kw">use </span>actix_web::{http::header, test::TestRequest};
|
||
|
||
<span class="kw">use super</span>::<span class="kw-2">*</span>;
|
||
|
||
<span class="kw">impl </span>PartialEq <span class="kw">for </span>ProtoBufPayloadError {
|
||
<span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>ProtoBufPayloadError) -> bool {
|
||
<span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
|
||
ProtoBufPayloadError::Overflow => {
|
||
<span class="macro">matches!</span>(<span class="kw-2">*</span>other, ProtoBufPayloadError::Overflow)
|
||
}
|
||
ProtoBufPayloadError::ContentType => {
|
||
<span class="macro">matches!</span>(<span class="kw-2">*</span>other, ProtoBufPayloadError::ContentType)
|
||
}
|
||
<span class="kw">_ </span>=> <span class="bool-val">false</span>,
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="attr">#[derive(Clone, PartialEq, Eq, Message)]
|
||
</span><span class="kw">pub struct </span>MyObject {
|
||
<span class="attr">#[prost(int32, tag = <span class="string">"1"</span>)]
|
||
</span><span class="kw">pub </span>number: i32,
|
||
<span class="attr">#[prost(string, tag = <span class="string">"2"</span>)]
|
||
</span><span class="kw">pub </span>name: String,
|
||
}
|
||
|
||
<span class="attr">#[actix_web::test]
|
||
</span><span class="kw">async fn </span>test_protobuf() {
|
||
<span class="kw">let </span>protobuf = ProtoBuf(MyObject {
|
||
number: <span class="number">9</span>,
|
||
name: <span class="string">"test"</span>.to_owned(),
|
||
});
|
||
<span class="kw">let </span>req = TestRequest::default().to_http_request();
|
||
<span class="kw">let </span>resp = protobuf.respond_to(<span class="kw-2">&</span>req);
|
||
<span class="kw">let </span>ct = resp.headers().get(header::CONTENT_TYPE).unwrap();
|
||
<span class="macro">assert_eq!</span>(ct, <span class="string">"application/protobuf"</span>);
|
||
}
|
||
|
||
<span class="attr">#[actix_web::test]
|
||
</span><span class="kw">async fn </span>test_protobuf_message() {
|
||
<span class="kw">let </span>(req, <span class="kw-2">mut </span>pl) = TestRequest::default().to_http_parts();
|
||
<span class="kw">let </span>protobuf = ProtoBufMessage::<MyObject>::new(<span class="kw-2">&</span>req, <span class="kw-2">&mut </span>pl).<span class="kw">await</span>;
|
||
<span class="macro">assert_eq!</span>(protobuf.err().unwrap(), ProtoBufPayloadError::ContentType);
|
||
|
||
<span class="kw">let </span>(req, <span class="kw-2">mut </span>pl) = TestRequest::get()
|
||
.insert_header((header::CONTENT_TYPE, <span class="string">"application/text"</span>))
|
||
.to_http_parts();
|
||
<span class="kw">let </span>protobuf = ProtoBufMessage::<MyObject>::new(<span class="kw-2">&</span>req, <span class="kw-2">&mut </span>pl).<span class="kw">await</span>;
|
||
<span class="macro">assert_eq!</span>(protobuf.err().unwrap(), ProtoBufPayloadError::ContentType);
|
||
|
||
<span class="kw">let </span>(req, <span class="kw-2">mut </span>pl) = TestRequest::get()
|
||
.insert_header((header::CONTENT_TYPE, <span class="string">"application/protobuf"</span>))
|
||
.insert_header((header::CONTENT_LENGTH, <span class="string">"10000"</span>))
|
||
.to_http_parts();
|
||
<span class="kw">let </span>protobuf = ProtoBufMessage::<MyObject>::new(<span class="kw-2">&</span>req, <span class="kw-2">&mut </span>pl)
|
||
.limit(<span class="number">100</span>)
|
||
.<span class="kw">await</span>;
|
||
<span class="macro">assert_eq!</span>(protobuf.err().unwrap(), ProtoBufPayloadError::Overflow);
|
||
}
|
||
}
|
||
</code></pre></div></section></main></body></html> |