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</pre></div><pre class="rust"><code><span class="doccomment">//! Process and extract typed data from a multipart stream.
</span><span class="kw">use </span>std::{
any::Any,
collections::HashMap,
future::{ready, Future},
sync::Arc,
};
<span class="kw">use </span>actix_web::{dev, error::PayloadError, web, Error, FromRequest, HttpRequest};
<span class="kw">use </span>derive_more::{Deref, DerefMut};
<span class="kw">use </span>futures_core::future::LocalBoxFuture;
<span class="kw">use </span>futures_util::{TryFutureExt <span class="kw">as _</span>, TryStreamExt <span class="kw">as _</span>};
<span class="kw">use crate</span>::{Field, Multipart, MultipartError};
<span class="kw">pub mod </span>bytes;
<span class="kw">pub mod </span>json;
<span class="attr">#[cfg(feature = <span class="string">"tempfile"</span>)]
</span><span class="kw">pub mod </span>tempfile;
<span class="kw">pub mod </span>text;
<span class="attr">#[cfg(feature = <span class="string">"derive"</span>)]
</span><span class="kw">pub use </span>actix_multipart_derive::MultipartForm;
<span class="kw">type </span>FieldErrorHandler<T> = <span class="prelude-ty">Option</span><Arc<<span class="kw">dyn </span>Fn(T, <span class="kw-2">&</span>HttpRequest) -> Error + Send + Sync>>;
<span class="doccomment">/// Trait that data types to be used in a multipart form struct should implement.
///
/// It represents an asynchronous handler that processes a multipart field to produce `Self`.
</span><span class="kw">pub trait </span>FieldReader<<span class="lifetime">'t</span>>: Sized + Any {
<span class="doccomment">/// Future that resolves to a `Self`.
</span><span class="kw">type </span>Future: Future<Output = <span class="prelude-ty">Result</span><<span class="self">Self</span>, MultipartError>>;
<span class="doccomment">/// The form will call this function to handle the field.
</span><span class="kw">fn </span>read_field(req: <span class="kw-2">&</span><span class="lifetime">'t </span>HttpRequest, field: Field, limits: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>Limits) -> <span class="self">Self</span>::Future;
}
<span class="doccomment">/// Used to accumulate the state of the loaded fields.
</span><span class="attr">#[doc(hidden)]
#[derive(Default, Deref, DerefMut)]
</span><span class="kw">pub struct </span>State(<span class="kw">pub </span>HashMap<String, Box<<span class="kw">dyn </span>Any>>);
<span class="doccomment">/// Trait that the field collection types implement, i.e. `Vec<T>`, `Option<T>`, or `T` itself.
</span><span class="attr">#[doc(hidden)]
</span><span class="kw">pub trait </span>FieldGroupReader<<span class="lifetime">'t</span>>: Sized + Any {
<span class="kw">type </span>Future: Future<Output = <span class="prelude-ty">Result</span><(), MultipartError>>;
<span class="doccomment">/// The form will call this function for each matching field.
</span><span class="kw">fn </span>handle_field(
req: <span class="kw-2">&</span><span class="lifetime">'t </span>HttpRequest,
field: Field,
limits: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>Limits,
state: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>State,
duplicate_field: DuplicateField,
) -> <span class="self">Self</span>::Future;
<span class="doccomment">/// Construct `Self` from the group of processed fields.
</span><span class="kw">fn </span>from_state(name: <span class="kw-2">&</span>str, state: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>State) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, MultipartError>;
}
<span class="kw">impl</span><<span class="lifetime">'t</span>, T> FieldGroupReader<<span class="lifetime">'t</span>> <span class="kw">for </span><span class="prelude-ty">Option</span><T>
<span class="kw">where
</span>T: FieldReader<<span class="lifetime">'t</span>>,
{
<span class="kw">type </span>Future = LocalBoxFuture<<span class="lifetime">'t</span>, <span class="prelude-ty">Result</span><(), MultipartError>>;
<span class="kw">fn </span>handle_field(
req: <span class="kw-2">&</span><span class="lifetime">'t </span>HttpRequest,
field: Field,
limits: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>Limits,
state: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>State,
duplicate_field: DuplicateField,
) -> <span class="self">Self</span>::Future {
<span class="kw">if </span>state.contains_key(field.name()) {
<span class="kw">match </span>duplicate_field {
DuplicateField::Ignore => <span class="kw">return </span>Box::pin(ready(<span class="prelude-val">Ok</span>(()))),
DuplicateField::Deny => {
<span class="kw">return </span>Box::pin(ready(<span class="prelude-val">Err</span>(MultipartError::DuplicateField(
field.name().to_owned(),
))))
}
DuplicateField::Replace => {}
}
}
Box::pin(<span class="kw">async move </span>{
<span class="kw">let </span>field_name = field.name().to_owned();
<span class="kw">let </span>t = T::read_field(req, field, limits).<span class="kw">await</span><span class="question-mark">?</span>;
state.insert(field_name, Box::new(t));
<span class="prelude-val">Ok</span>(())
})
}
<span class="kw">fn </span>from_state(name: <span class="kw-2">&</span>str, state: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>State) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, MultipartError> {
<span class="prelude-val">Ok</span>(state.remove(name).map(|m| <span class="kw-2">*</span>m.downcast::<T>().unwrap()))
}
}
<span class="kw">impl</span><<span class="lifetime">'t</span>, T> FieldGroupReader<<span class="lifetime">'t</span>> <span class="kw">for </span>Vec<T>
<span class="kw">where
</span>T: FieldReader<<span class="lifetime">'t</span>>,
{
<span class="kw">type </span>Future = LocalBoxFuture<<span class="lifetime">'t</span>, <span class="prelude-ty">Result</span><(), MultipartError>>;
<span class="kw">fn </span>handle_field(
req: <span class="kw-2">&</span><span class="lifetime">'t </span>HttpRequest,
field: Field,
limits: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>Limits,
state: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>State,
_duplicate_field: DuplicateField,
) -> <span class="self">Self</span>::Future {
Box::pin(<span class="kw">async move </span>{
<span class="comment">// Note: Vec GroupReader always allows duplicates
</span><span class="kw">let </span>field_name = field.name().to_owned();
<span class="kw">let </span>vec = state
.entry(field_name)
.or_insert_with(|| Box::<Vec<T>>::default())
.downcast_mut::<Vec<T>>()
.unwrap();
<span class="kw">let </span>item = T::read_field(req, field, limits).<span class="kw">await</span><span class="question-mark">?</span>;
vec.push(item);
<span class="prelude-val">Ok</span>(())
})
}
<span class="kw">fn </span>from_state(name: <span class="kw-2">&</span>str, state: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>State) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, MultipartError> {
<span class="prelude-val">Ok</span>(state
.remove(name)
.map(|m| <span class="kw-2">*</span>m.downcast::<Vec<T>>().unwrap())
.unwrap_or_default())
}
}
<span class="kw">impl</span><<span class="lifetime">'t</span>, T> FieldGroupReader<<span class="lifetime">'t</span>> <span class="kw">for </span>T
<span class="kw">where
</span>T: FieldReader<<span class="lifetime">'t</span>>,
{
<span class="kw">type </span>Future = LocalBoxFuture<<span class="lifetime">'t</span>, <span class="prelude-ty">Result</span><(), MultipartError>>;
<span class="kw">fn </span>handle_field(
req: <span class="kw-2">&</span><span class="lifetime">'t </span>HttpRequest,
field: Field,
limits: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>Limits,
state: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>State,
duplicate_field: DuplicateField,
) -> <span class="self">Self</span>::Future {
<span class="kw">if </span>state.contains_key(field.name()) {
<span class="kw">match </span>duplicate_field {
DuplicateField::Ignore => <span class="kw">return </span>Box::pin(ready(<span class="prelude-val">Ok</span>(()))),
DuplicateField::Deny => {
<span class="kw">return </span>Box::pin(ready(<span class="prelude-val">Err</span>(MultipartError::DuplicateField(
field.name().to_owned(),
))))
}
DuplicateField::Replace => {}
}
}
Box::pin(<span class="kw">async move </span>{
<span class="kw">let </span>field_name = field.name().to_owned();
<span class="kw">let </span>t = T::read_field(req, field, limits).<span class="kw">await</span><span class="question-mark">?</span>;
state.insert(field_name, Box::new(t));
<span class="prelude-val">Ok</span>(())
})
}
<span class="kw">fn </span>from_state(name: <span class="kw-2">&</span>str, state: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>State) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, MultipartError> {
state
.remove(name)
.map(|m| <span class="kw-2">*</span>m.downcast::<T>().unwrap())
.ok_or_else(|| MultipartError::MissingField(name.to_owned()))
}
}
<span class="doccomment">/// Trait that allows a type to be used in the [`struct@MultipartForm`] extractor.
///
/// You should use the [`macro@MultipartForm`] macro to derive this for your struct.
</span><span class="kw">pub trait </span>MultipartCollect: Sized {
<span class="doccomment">/// An optional limit in bytes to be applied a given field name. Note this limit will be shared
/// across all fields sharing the same name.
</span><span class="kw">fn </span>limit(field_name: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Option</span><usize>;
<span class="doccomment">/// The extractor will call this function for each incoming field, the state can be updated
/// with the processed field data.
</span><span class="kw">fn </span>handle_field<<span class="lifetime">'t</span>>(
req: <span class="kw-2">&</span><span class="lifetime">'t </span>HttpRequest,
field: Field,
limits: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>Limits,
state: <span class="kw-2">&</span><span class="lifetime">'t </span><span class="kw-2">mut </span>State,
) -> LocalBoxFuture<<span class="lifetime">'t</span>, <span class="prelude-ty">Result</span><(), MultipartError>>;
<span class="doccomment">/// Once all the fields have been processed and stored in the state, this is called
/// to convert into the struct representation.
</span><span class="kw">fn </span>from_state(state: State) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, MultipartError>;
}
<span class="attr">#[doc(hidden)]
</span><span class="kw">pub enum </span>DuplicateField {
<span class="doccomment">/// Additional fields are not processed.
</span>Ignore,
<span class="doccomment">/// An error will be raised.
</span>Deny,
<span class="doccomment">/// All fields will be processed, the last one will replace all previous.
</span>Replace,
}
<span class="doccomment">/// Used to keep track of the remaining limits for the form and current field.
</span><span class="kw">pub struct </span>Limits {
<span class="kw">pub </span>total_limit_remaining: usize,
<span class="kw">pub </span>memory_limit_remaining: usize,
<span class="kw">pub </span>field_limit_remaining: <span class="prelude-ty">Option</span><usize>,
}
<span class="kw">impl </span>Limits {
<span class="kw">pub fn </span>new(total_limit: usize, memory_limit: usize) -> <span class="self">Self </span>{
<span class="self">Self </span>{
total_limit_remaining: total_limit,
memory_limit_remaining: memory_limit,
field_limit_remaining: <span class="prelude-val">None</span>,
}
}
<span class="doccomment">/// This function should be called within a [`FieldReader`] when reading each chunk of a field
/// to ensure that the form limits are not exceeded.
///
/// # Arguments
///
/// * `bytes` - The number of bytes being read from this chunk
/// * `in_memory` - Whether to consume from the memory limits
</span><span class="kw">pub fn </span>try_consume_limits(
<span class="kw-2">&mut </span><span class="self">self</span>,
bytes: usize,
in_memory: bool,
) -> <span class="prelude-ty">Result</span><(), MultipartError> {
<span class="self">self</span>.total_limit_remaining = <span class="self">self
</span>.total_limit_remaining
.checked_sub(bytes)
.ok_or(MultipartError::Payload(PayloadError::Overflow))<span class="question-mark">?</span>;
<span class="kw">if </span>in_memory {
<span class="self">self</span>.memory_limit_remaining = <span class="self">self
</span>.memory_limit_remaining
.checked_sub(bytes)
.ok_or(MultipartError::Payload(PayloadError::Overflow))<span class="question-mark">?</span>;
}
<span class="kw">if let </span><span class="prelude-val">Some</span>(field_limit) = <span class="self">self</span>.field_limit_remaining {
<span class="self">self</span>.field_limit_remaining = <span class="prelude-val">Some</span>(
field_limit
.checked_sub(bytes)
.ok_or(MultipartError::Payload(PayloadError::Overflow))<span class="question-mark">?</span>,
);
}
<span class="prelude-val">Ok</span>(())
}
}
<span class="doccomment">/// Typed `multipart/form-data` extractor.
///
/// To extract typed data from a multipart stream, the inner type `T` must implement the
/// [`MultipartCollect`] trait. You should use the [`macro@MultipartForm`] macro to derive this
/// for your struct.
///
/// Add a [`MultipartFormConfig`] to your app data to configure extraction.
</span><span class="attr">#[derive(Deref, DerefMut)]
</span><span class="kw">pub struct </span>MultipartForm<T: MultipartCollect>(<span class="kw">pub </span>T);
<span class="kw">impl</span><T: MultipartCollect> MultipartForm<T> {
<span class="doccomment">/// Unwrap into inner `T` value.
</span><span class="kw">pub fn </span>into_inner(<span class="self">self</span>) -> T {
<span class="self">self</span>.<span class="number">0
</span>}
}
<span class="kw">impl</span><T> FromRequest <span class="kw">for </span>MultipartForm<T>
<span class="kw">where
</span>T: MultipartCollect,
{
<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>, <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>dev::Payload) -> <span class="self">Self</span>::Future {
<span class="kw">let </span><span class="kw-2">mut </span>payload = Multipart::new(req.headers(), payload.take());
<span class="kw">let </span>config = MultipartFormConfig::from_req(req);
<span class="kw">let </span><span class="kw-2">mut </span>limits = Limits::new(config.total_limit, config.memory_limit);
<span class="kw">let </span>req = req.clone();
<span class="kw">let </span>req2 = req.clone();
<span class="kw">let </span>err_handler = config.err_handler.clone();
Box::pin(
<span class="kw">async move </span>{
<span class="kw">let </span><span class="kw-2">mut </span>state = State::default();
<span class="comment">// We need to ensure field limits are shared for all instances of this field name
</span><span class="kw">let </span><span class="kw-2">mut </span>field_limits = HashMap::<String, <span class="prelude-ty">Option</span><usize>>::new();
<span class="kw">while let </span><span class="prelude-val">Some</span>(field) = payload.try_next().<span class="kw">await</span><span class="question-mark">? </span>{
<span class="comment">// Retrieve the limit for this field
</span><span class="kw">let </span>entry = field_limits
.entry(field.name().to_owned())
.or_insert_with(|| T::limit(field.name()));
limits.field_limit_remaining.clone_from(entry);
T::handle_field(<span class="kw-2">&</span>req, field, <span class="kw-2">&mut </span>limits, <span class="kw-2">&mut </span>state).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="comment">// Update the stored limit
</span><span class="kw-2">*</span>entry = limits.field_limit_remaining;
}
<span class="kw">let </span>inner = T::from_state(state)<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(MultipartForm(inner))
}
.map_err(<span class="kw">move </span>|err| {
<span class="kw">if let </span><span class="prelude-val">Some</span>(handler) = err_handler {
(<span class="kw-2">*</span>handler)(err, <span class="kw-2">&</span>req2)
} <span class="kw">else </span>{
err.into()
}
}),
)
}
}
<span class="kw">type </span>MultipartFormErrorHandler =
<span class="prelude-ty">Option</span><Arc<<span class="kw">dyn </span>Fn(MultipartError, <span class="kw-2">&</span>HttpRequest) -> Error + Send + Sync>>;
<span class="doccomment">/// [`struct@MultipartForm`] extractor configuration.
///
/// Add to your app data to have it picked up by [`struct@MultipartForm`] extractors.
</span><span class="attr">#[derive(Clone)]
</span><span class="kw">pub struct </span>MultipartFormConfig {
total_limit: usize,
memory_limit: usize,
err_handler: MultipartFormErrorHandler,
}
<span class="kw">impl </span>MultipartFormConfig {
<span class="doccomment">/// Sets maximum accepted payload size for the entire form. By default this limit is 50MiB.
</span><span class="kw">pub fn </span>total_limit(<span class="kw-2">mut </span><span class="self">self</span>, total_limit: usize) -> <span class="self">Self </span>{
<span class="self">self</span>.total_limit = total_limit;
<span class="self">self
</span>}
<span class="doccomment">/// Sets maximum accepted data that will be read into memory. By default this limit is 2MiB.
</span><span class="kw">pub fn </span>memory_limit(<span class="kw-2">mut </span><span class="self">self</span>, memory_limit: usize) -> <span class="self">Self </span>{
<span class="self">self</span>.memory_limit = memory_limit;
<span class="self">self
</span>}
<span class="doccomment">/// Sets custom error handler.
</span><span class="kw">pub fn </span>error_handler<F>(<span class="kw-2">mut </span><span class="self">self</span>, f: F) -> <span class="self">Self
</span><span class="kw">where
</span>F: Fn(MultipartError, <span class="kw-2">&</span>HttpRequest) -> Error + Send + Sync + <span class="lifetime">'static</span>,
{
<span class="self">self</span>.err_handler = <span class="prelude-val">Some</span>(Arc::new(f));
<span class="self">self
</span>}
<span class="doccomment">/// Extracts payload config from app data. Check both `T` and `Data<T>`, in that order, and fall
/// back to the default payload config.
</span><span class="kw">fn </span>from_req(req: <span class="kw-2">&</span>HttpRequest) -> <span class="kw-2">&</span><span class="self">Self </span>{
req.app_data::<<span class="self">Self</span>>()
.or_else(|| req.app_data::<web::Data<<span class="self">Self</span>>>().map(|d| d.as_ref()))
.unwrap_or(<span class="kw-2">&</span>DEFAULT_CONFIG)
}
}
<span class="kw">const </span>DEFAULT_CONFIG: MultipartFormConfig = MultipartFormConfig {
total_limit: <span class="number">52_428_800</span>, <span class="comment">// 50 MiB
</span>memory_limit: <span class="number">2_097_152</span>, <span class="comment">// 2 MiB
</span>err_handler: <span class="prelude-val">None</span>,
};
<span class="kw">impl </span>Default <span class="kw">for </span>MultipartFormConfig {
<span class="kw">fn </span>default() -> <span class="self">Self </span>{
DEFAULT_CONFIG
}
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use </span>actix_http::encoding::Decoder;
<span class="kw">use </span>actix_multipart_rfc7578::client::multipart;
<span class="kw">use </span>actix_test::TestServer;
<span class="kw">use </span>actix_web::{dev::Payload, http::StatusCode, web, App, HttpResponse, Responder};
<span class="kw">use </span>awc::{Client, ClientResponse};
<span class="kw">use </span><span class="kw">super</span>::MultipartForm;
<span class="kw">use </span><span class="kw">crate</span>::form::{bytes::Bytes, tempfile::TempFile, text::Text, MultipartFormConfig};
<span class="kw">pub async fn </span>send_form(
srv: <span class="kw-2">&</span>TestServer,
form: multipart::Form<<span class="lifetime">'static</span>>,
uri: <span class="kw-2">&</span><span class="lifetime">'static </span>str,
) -> ClientResponse<Decoder<Payload>> {
Client::default()
.post(srv.url(uri))
.content_type(form.content_type())
.send_body(multipart::Body::from(form))
.<span class="kw">await
</span>.unwrap()
}
<span class="doccomment">/// Test `Option` fields.
</span><span class="attr">#[derive(MultipartForm)]
</span><span class="kw">struct </span>TestOptions {
field1: <span class="prelude-ty">Option</span><Text<String>>,
field2: <span class="prelude-ty">Option</span><Text<String>>,
}
<span class="kw">async fn </span>test_options_route(form: MultipartForm<TestOptions>) -> <span class="kw">impl </span>Responder {
<span class="macro">assert!</span>(form.field1.is_some());
<span class="macro">assert!</span>(form.field2.is_none());
HttpResponse::Ok().finish()
}
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_options() {
<span class="kw">let </span>srv = actix_test::start(|| App::new().route(<span class="string">"/"</span>, web::post().to(test_options_route)));
<span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field1"</span>, <span class="string">"value"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
}
<span class="doccomment">/// Test `Vec` fields.
</span><span class="attr">#[derive(MultipartForm)]
</span><span class="kw">struct </span>TestVec {
list1: Vec<Text<String>>,
list2: Vec<Text<String>>,
}
<span class="kw">async fn </span>test_vec_route(form: MultipartForm<TestVec>) -> <span class="kw">impl </span>Responder {
<span class="kw">let </span>form = form.into_inner();
<span class="kw">let </span>strings = form
.list1
.into_iter()
.map(|s| s.into_inner())
.collect::<Vec<<span class="kw">_</span>>>();
<span class="macro">assert_eq!</span>(strings, <span class="macro">vec!</span>[<span class="string">"value1"</span>, <span class="string">"value2"</span>, <span class="string">"value3"</span>]);
<span class="macro">assert_eq!</span>(form.list2.len(), <span class="number">0</span>);
HttpResponse::Ok().finish()
}
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_vec() {
<span class="kw">let </span>srv = actix_test::start(|| App::new().route(<span class="string">"/"</span>, web::post().to(test_vec_route)));
<span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"list1"</span>, <span class="string">"value1"</span>);
form.add_text(<span class="string">"list1"</span>, <span class="string">"value2"</span>);
form.add_text(<span class="string">"list1"</span>, <span class="string">"value3"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
}
<span class="doccomment">/// Test the `rename` field attribute.
</span><span class="attr">#[derive(MultipartForm)]
</span><span class="kw">struct </span>TestFieldRenaming {
<span class="attr">#[multipart(rename = <span class="string">"renamed"</span>)]
</span>field1: Text<String>,
<span class="attr">#[multipart(rename = <span class="string">"field1"</span>)]
</span>field2: Text<String>,
field3: Text<String>,
}
<span class="kw">async fn </span>test_field_renaming_route(form: MultipartForm<TestFieldRenaming>) -> <span class="kw">impl </span>Responder {
<span class="macro">assert_eq!</span>(<span class="kw-2">&*</span>form.field1, <span class="string">"renamed"</span>);
<span class="macro">assert_eq!</span>(<span class="kw-2">&*</span>form.field2, <span class="string">"field1"</span>);
<span class="macro">assert_eq!</span>(<span class="kw-2">&*</span>form.field3, <span class="string">"field3"</span>);
HttpResponse::Ok().finish()
}
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_field_renaming() {
<span class="kw">let </span>srv =
actix_test::start(|| App::new().route(<span class="string">"/"</span>, web::post().to(test_field_renaming_route)));
<span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"renamed"</span>, <span class="string">"renamed"</span>);
form.add_text(<span class="string">"field1"</span>, <span class="string">"field1"</span>);
form.add_text(<span class="string">"field3"</span>, <span class="string">"field3"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
}
<span class="doccomment">/// Test the `deny_unknown_fields` struct attribute.
</span><span class="attr">#[derive(MultipartForm)]
#[multipart(deny_unknown_fields)]
</span><span class="kw">struct </span>TestDenyUnknown {}
<span class="attr">#[derive(MultipartForm)]
</span><span class="kw">struct </span>TestAllowUnknown {}
<span class="kw">async fn </span>test_deny_unknown_route(<span class="kw">_</span>: MultipartForm<TestDenyUnknown>) -> <span class="kw">impl </span>Responder {
HttpResponse::Ok().finish()
}
<span class="kw">async fn </span>test_allow_unknown_route(<span class="kw">_</span>: MultipartForm<TestAllowUnknown>) -> <span class="kw">impl </span>Responder {
HttpResponse::Ok().finish()
}
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_deny_unknown() {
<span class="kw">let </span>srv = actix_test::start(|| {
App::new()
.route(<span class="string">"/deny"</span>, web::post().to(test_deny_unknown_route))
.route(<span class="string">"/allow"</span>, web::post().to(test_allow_unknown_route))
});
<span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"unknown"</span>, <span class="string">"value"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/deny"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::BAD_REQUEST);
<span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"unknown"</span>, <span class="string">"value"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/allow"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
}
<span class="doccomment">/// Test the `duplicate_field` struct attribute.
</span><span class="attr">#[derive(MultipartForm)]
#[multipart(duplicate_field = <span class="string">"deny"</span>)]
</span><span class="kw">struct </span>TestDuplicateDeny {
_field: Text<String>,
}
<span class="attr">#[derive(MultipartForm)]
#[multipart(duplicate_field = <span class="string">"replace"</span>)]
</span><span class="kw">struct </span>TestDuplicateReplace {
field: Text<String>,
}
<span class="attr">#[derive(MultipartForm)]
#[multipart(duplicate_field = <span class="string">"ignore"</span>)]
</span><span class="kw">struct </span>TestDuplicateIgnore {
field: Text<String>,
}
<span class="kw">async fn </span>test_duplicate_deny_route(<span class="kw">_</span>: MultipartForm<TestDuplicateDeny>) -> <span class="kw">impl </span>Responder {
HttpResponse::Ok().finish()
}
<span class="kw">async fn </span>test_duplicate_replace_route(
form: MultipartForm<TestDuplicateReplace>,
) -> <span class="kw">impl </span>Responder {
<span class="macro">assert_eq!</span>(<span class="kw-2">&*</span>form.field, <span class="string">"second_value"</span>);
HttpResponse::Ok().finish()
}
<span class="kw">async fn </span>test_duplicate_ignore_route(
form: MultipartForm<TestDuplicateIgnore>,
) -> <span class="kw">impl </span>Responder {
<span class="macro">assert_eq!</span>(<span class="kw-2">&*</span>form.field, <span class="string">"first_value"</span>);
HttpResponse::Ok().finish()
}
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_duplicate_field() {
<span class="kw">let </span>srv = actix_test::start(|| {
App::new()
.route(<span class="string">"/deny"</span>, web::post().to(test_duplicate_deny_route))
.route(<span class="string">"/replace"</span>, web::post().to(test_duplicate_replace_route))
.route(<span class="string">"/ignore"</span>, web::post().to(test_duplicate_ignore_route))
});
<span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"_field"</span>, <span class="string">"first_value"</span>);
form.add_text(<span class="string">"_field"</span>, <span class="string">"second_value"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/deny"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::BAD_REQUEST);
<span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field"</span>, <span class="string">"first_value"</span>);
form.add_text(<span class="string">"field"</span>, <span class="string">"second_value"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/replace"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
<span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field"</span>, <span class="string">"first_value"</span>);
form.add_text(<span class="string">"field"</span>, <span class="string">"second_value"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/ignore"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
}
<span class="doccomment">/// Test the Limits.
</span><span class="attr">#[derive(MultipartForm)]
</span><span class="kw">struct </span>TestMemoryUploadLimits {
field: Bytes,
}
<span class="attr">#[derive(MultipartForm)]
</span><span class="kw">struct </span>TestFileUploadLimits {
field: TempFile,
}
<span class="kw">async fn </span>test_upload_limits_memory(
form: MultipartForm<TestMemoryUploadLimits>,
) -> <span class="kw">impl </span>Responder {
<span class="macro">assert!</span>(!form.field.data.is_empty());
HttpResponse::Ok().finish()
}
<span class="kw">async fn </span>test_upload_limits_file(form: MultipartForm<TestFileUploadLimits>) -> <span class="kw">impl </span>Responder {
<span class="macro">assert!</span>(form.field.size > <span class="number">0</span>);
HttpResponse::Ok().finish()
}
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_memory_limits() {
<span class="kw">let </span>srv = actix_test::start(|| {
App::new()
.route(<span class="string">"/text"</span>, web::post().to(test_upload_limits_memory))
.route(<span class="string">"/file"</span>, web::post().to(test_upload_limits_file))
.app_data(
MultipartFormConfig::default()
.memory_limit(<span class="number">20</span>)
.total_limit(usize::MAX),
)
});
<span class="comment">// Exceeds the 20 byte memory limit
</span><span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field"</span>, <span class="string">"this string is 28 bytes long"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/text"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::BAD_REQUEST);
<span class="comment">// Memory limit should not apply when the data is being streamed to disk
</span><span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field"</span>, <span class="string">"this string is 28 bytes long"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/file"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
}
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_total_limit() {
<span class="kw">let </span>srv = actix_test::start(|| {
App::new()
.route(<span class="string">"/text"</span>, web::post().to(test_upload_limits_memory))
.route(<span class="string">"/file"</span>, web::post().to(test_upload_limits_file))
.app_data(
MultipartFormConfig::default()
.memory_limit(usize::MAX)
.total_limit(<span class="number">20</span>),
)
});
<span class="comment">// Within the 20 byte limit
</span><span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field"</span>, <span class="string">"7 bytes"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/text"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
<span class="comment">// Exceeds the 20 byte overall limit
</span><span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field"</span>, <span class="string">"this string is 28 bytes long"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/text"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::BAD_REQUEST);
<span class="comment">// Exceeds the 20 byte overall limit
</span><span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field"</span>, <span class="string">"this string is 28 bytes long"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/file"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::BAD_REQUEST);
}
<span class="attr">#[derive(MultipartForm)]
</span><span class="kw">struct </span>TestFieldLevelLimits {
<span class="attr">#[multipart(limit = <span class="string">"30B"</span>)]
</span>field: Vec<Bytes>,
}
<span class="kw">async fn </span>test_field_level_limits_route(
form: MultipartForm<TestFieldLevelLimits>,
) -> <span class="kw">impl </span>Responder {
<span class="macro">assert!</span>(!form.field.is_empty());
HttpResponse::Ok().finish()
}
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_field_level_limits() {
<span class="kw">let </span>srv = actix_test::start(|| {
App::new()
.route(<span class="string">"/"</span>, web::post().to(test_field_level_limits_route))
.app_data(
MultipartFormConfig::default()
.memory_limit(usize::MAX)
.total_limit(usize::MAX),
)
});
<span class="comment">// Within the 30 byte limit
</span><span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field"</span>, <span class="string">"this string is 28 bytes long"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
<span class="comment">// Exceeds the the 30 byte limit
</span><span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field"</span>, <span class="string">"this string is more than 30 bytes long"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::BAD_REQUEST);
<span class="comment">// Total of values (14 bytes) is within 30 byte limit for "field"
</span><span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field"</span>, <span class="string">"7 bytes"</span>);
form.add_text(<span class="string">"field"</span>, <span class="string">"7 bytes"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
<span class="comment">// Total of values exceeds 30 byte limit for "field"
</span><span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_text(<span class="string">"field"</span>, <span class="string">"this string is 28 bytes long"</span>);
form.add_text(<span class="string">"field"</span>, <span class="string">"this string is 28 bytes long"</span>);
<span class="kw">let </span>response = send_form(<span class="kw-2">&</span>srv, form, <span class="string">"/"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::BAD_REQUEST);
}
}
</code></pre></div></section></main></body></html>