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</pre></div><pre class="rust"><code><span class="doccomment">//! Error and Result module
</span><span class="kw">use </span>actix_web::{
error::{ParseError, PayloadError},
http::StatusCode,
ResponseError,
};
<span class="kw">use </span>derive_more::{Display, Error, From};
<span class="doccomment">/// A set of errors that can occur during parsing multipart streams.
</span><span class="attr">#[derive(Debug, Display, From, Error)]
#[non_exhaustive]
</span><span class="kw">pub enum </span>MultipartError {
<span class="doccomment">/// Content-Disposition header is not found or is not equal to "form-data".
///
/// According to [RFC 7578 §4.2](https://datatracker.ietf.org/doc/html/rfc7578#section-4.2) a
/// Content-Disposition header must always be present and equal to "form-data".
</span><span class="attr">#[display(fmt = <span class="string">"No Content-Disposition `form-data` header"</span>)]
</span>NoContentDisposition,
<span class="doccomment">/// Content-Type header is not found
</span><span class="attr">#[display(fmt = <span class="string">"No Content-Type header found"</span>)]
</span>NoContentType,
<span class="doccomment">/// Can not parse Content-Type header
</span><span class="attr">#[display(fmt = <span class="string">"Can not parse Content-Type header"</span>)]
</span>ParseContentType,
<span class="doccomment">/// Multipart boundary is not found
</span><span class="attr">#[display(fmt = <span class="string">"Multipart boundary is not found"</span>)]
</span>Boundary,
<span class="doccomment">/// Nested multipart is not supported
</span><span class="attr">#[display(fmt = <span class="string">"Nested multipart is not supported"</span>)]
</span>Nested,
<span class="doccomment">/// Multipart stream is incomplete
</span><span class="attr">#[display(fmt = <span class="string">"Multipart stream is incomplete"</span>)]
</span>Incomplete,
<span class="doccomment">/// Error during field parsing
</span><span class="attr">#[display(fmt = <span class="string">"{}"</span>, _0)]
</span>Parse(ParseError),
<span class="doccomment">/// Payload error
</span><span class="attr">#[display(fmt = <span class="string">"{}"</span>, _0)]
</span>Payload(PayloadError),
<span class="doccomment">/// Not consumed
</span><span class="attr">#[display(fmt = <span class="string">"Multipart stream is not consumed"</span>)]
</span>NotConsumed,
<span class="doccomment">/// An error from a field handler in a form
</span><span class="attr">#[display(
fmt = <span class="string">"An error occurred processing field `{}`: {}"</span>,
field_name,
source
)]
</span>Field {
field_name: String,
source: actix_web::Error,
},
<span class="doccomment">/// Duplicate field
</span><span class="attr">#[display(fmt = <span class="string">"Duplicate field found for: `{}`"</span>, _0)]
#[from(ignore)]
</span>DuplicateField(<span class="attr">#[error(not(source))] </span>String),
<span class="doccomment">/// Missing field
</span><span class="attr">#[display(fmt = <span class="string">"Field with name `{}` is required"</span>, _0)]
#[from(ignore)]
</span>MissingField(<span class="attr">#[error(not(source))] </span>String),
<span class="doccomment">/// Unknown field
</span><span class="attr">#[display(fmt = <span class="string">"Unsupported field `{}`"</span>, _0)]
#[from(ignore)]
</span>UnsupportedField(<span class="attr">#[error(not(source))] </span>String),
}
<span class="doccomment">/// Return `BadRequest` for `MultipartError`
</span><span class="kw">impl </span>ResponseError <span class="kw">for </span>MultipartError {
<span class="kw">fn </span>status_code(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; StatusCode {
<span class="kw">match </span><span class="kw-2">&amp;</span><span class="self">self </span>{
MultipartError::Field { source, .. } =&gt; source.as_response_error().status_code(),
<span class="kw">_ </span>=&gt; StatusCode::BAD_REQUEST,
}
}
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use super</span>::<span class="kw-2">*</span>;
<span class="attr">#[test]
</span><span class="kw">fn </span>test_multipart_error() {
<span class="kw">let </span>resp = MultipartError::Boundary.error_response();
<span class="macro">assert_eq!</span>(resp.status(), StatusCode::BAD_REQUEST);
}
}
</code></pre></div></section></main></body></html>

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</pre></div><pre class="rust"><code><span class="doccomment">//! Multipart payload support
</span><span class="kw">use </span>actix_utils::future::{ready, Ready};
<span class="kw">use </span>actix_web::{dev::Payload, Error, FromRequest, HttpRequest};
<span class="kw">use </span><span class="kw">crate</span>::server::Multipart;
<span class="doccomment">/// Get request's payload as multipart stream.
///
/// Content-type: multipart/form-data;
///
/// # Examples
/// ```
/// use actix_web::{web, HttpResponse, Error};
/// use actix_multipart::Multipart;
/// use futures_util::StreamExt as _;
///
/// async fn index(mut payload: Multipart) -&gt; Result&lt;HttpResponse, Error&gt; {
/// // iterate over multipart stream
/// while let Some(item) = payload.next().await {
/// let mut field = item?;
///
/// // Field in turn is stream of *Bytes* object
/// while let Some(chunk) = field.next().await {
/// println!("-- CHUNK: \n{:?}", std::str::from_utf8(&amp;chunk?));
/// }
/// }
///
/// Ok(HttpResponse::Ok().into())
/// }
/// ```
</span><span class="kw">impl </span>FromRequest <span class="kw">for </span>Multipart {
<span class="kw">type </span>Error = Error;
<span class="kw">type </span>Future = Ready&lt;<span class="prelude-ty">Result</span>&lt;Multipart, Error&gt;&gt;;
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_request(req: <span class="kw-2">&amp;</span>HttpRequest, payload: <span class="kw-2">&amp;mut </span>Payload) -&gt; <span class="self">Self</span>::Future {
ready(<span class="prelude-val">Ok</span>(<span class="kw">match </span>Multipart::boundary(req.headers()) {
<span class="prelude-val">Ok</span>(boundary) =&gt; Multipart::from_boundary(boundary, payload.take()),
<span class="prelude-val">Err</span>(err) =&gt; Multipart::from_error(err),
}))
}
}
</code></pre></div></section></main></body></html>

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</pre></div><pre class="rust"><code><span class="doccomment">//! Reads a field into memory.
</span><span class="kw">use </span>actix_web::HttpRequest;
<span class="kw">use </span>bytes::BytesMut;
<span class="kw">use </span>futures_core::future::LocalBoxFuture;
<span class="kw">use </span>futures_util::TryStreamExt <span class="kw">as _</span>;
<span class="kw">use </span>mime::Mime;
<span class="kw">use crate</span>::{
form::{FieldReader, Limits},
Field, MultipartError,
};
<span class="doccomment">/// Read the field into memory.
</span><span class="attr">#[derive(Debug)]
</span><span class="kw">pub struct </span>Bytes {
<span class="doccomment">/// The data.
</span><span class="kw">pub </span>data: bytes::Bytes,
<span class="doccomment">/// The value of the `Content-Type` header.
</span><span class="kw">pub </span>content_type: <span class="prelude-ty">Option</span>&lt;Mime&gt;,
<span class="doccomment">/// The `filename` value in the `Content-Disposition` header.
</span><span class="kw">pub </span>file_name: <span class="prelude-ty">Option</span>&lt;String&gt;,
}
<span class="kw">impl</span>&lt;<span class="lifetime">'t</span>&gt; FieldReader&lt;<span class="lifetime">'t</span>&gt; <span class="kw">for </span>Bytes {
<span class="kw">type </span>Future = LocalBoxFuture&lt;<span class="lifetime">'t</span>, <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, MultipartError&gt;&gt;;
<span class="kw">fn </span>read_field(<span class="kw">_</span>: <span class="kw-2">&amp;</span><span class="lifetime">'t </span>HttpRequest, <span class="kw-2">mut </span>field: Field, limits: <span class="kw-2">&amp;</span><span class="lifetime">'t </span><span class="kw-2">mut </span>Limits) -&gt; <span class="self">Self</span>::Future {
Box::pin(<span class="kw">async move </span>{
<span class="kw">let </span><span class="kw-2">mut </span>buf = BytesMut::with_capacity(<span class="number">131_072</span>);
<span class="kw">while let </span><span class="prelude-val">Some</span>(chunk) = field.try_next().<span class="kw">await</span><span class="question-mark">? </span>{
limits.try_consume_limits(chunk.len(), <span class="bool-val">true</span>)<span class="question-mark">?</span>;
buf.extend(chunk);
}
<span class="prelude-val">Ok</span>(Bytes {
data: buf.freeze(),
content_type: field.content_type().map(ToOwned::to_owned),
file_name: field
.content_disposition()
.get_filename()
.map(str::to_owned),
})
})
}
}
</code></pre></div></section></main></body></html>

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@ -0,0 +1,423 @@
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</pre></div><pre class="rust"><code><span class="doccomment">//! Deserializes a field as JSON.
</span><span class="kw">use </span>std::sync::Arc;
<span class="kw">use </span>actix_web::{http::StatusCode, web, Error, HttpRequest, ResponseError};
<span class="kw">use </span>derive_more::{Deref, DerefMut, Display, Error};
<span class="kw">use </span>futures_core::future::LocalBoxFuture;
<span class="kw">use </span>serde::de::DeserializeOwned;
<span class="kw">use </span><span class="kw">super</span>::FieldErrorHandler;
<span class="kw">use crate</span>::{
form::{bytes::Bytes, FieldReader, Limits},
Field, MultipartError,
};
<span class="doccomment">/// Deserialize from JSON.
</span><span class="attr">#[derive(Debug, Deref, DerefMut)]
</span><span class="kw">pub struct </span>Json&lt;T: DeserializeOwned&gt;(<span class="kw">pub </span>T);
<span class="kw">impl</span>&lt;T: DeserializeOwned&gt; Json&lt;T&gt; {
<span class="kw">pub fn </span>into_inner(<span class="self">self</span>) -&gt; T {
<span class="self">self</span>.<span class="number">0
</span>}
}
<span class="kw">impl</span>&lt;<span class="lifetime">'t</span>, T&gt; FieldReader&lt;<span class="lifetime">'t</span>&gt; <span class="kw">for </span>Json&lt;T&gt;
<span class="kw">where
</span>T: DeserializeOwned + <span class="lifetime">'static</span>,
{
<span class="kw">type </span>Future = LocalBoxFuture&lt;<span class="lifetime">'t</span>, <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, MultipartError&gt;&gt;;
<span class="kw">fn </span>read_field(req: <span class="kw-2">&amp;</span><span class="lifetime">'t </span>HttpRequest, field: Field, limits: <span class="kw-2">&amp;</span><span class="lifetime">'t </span><span class="kw-2">mut </span>Limits) -&gt; <span class="self">Self</span>::Future {
Box::pin(<span class="kw">async move </span>{
<span class="kw">let </span>config = JsonConfig::from_req(req);
<span class="kw">let </span>field_name = field.name().to_owned();
<span class="kw">if </span>config.validate_content_type {
<span class="kw">let </span>valid = <span class="kw">if let </span><span class="prelude-val">Some</span>(mime) = field.content_type() {
mime.subtype() == mime::JSON || mime.suffix() == <span class="prelude-val">Some</span>(mime::JSON)
} <span class="kw">else </span>{
<span class="bool-val">false
</span>};
<span class="kw">if </span>!valid {
<span class="kw">return </span><span class="prelude-val">Err</span>(MultipartError::Field {
field_name,
source: config.map_error(req, JsonFieldError::ContentType),
});
}
}
<span class="kw">let </span>bytes = Bytes::read_field(req, field, limits).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(Json(serde_json::from_slice(bytes.data.as_ref()).map_err(
|err| MultipartError::Field {
field_name,
source: config.map_error(req, JsonFieldError::Deserialize(err)),
},
)<span class="question-mark">?</span>))
})
}
}
<span class="attr">#[derive(Debug, Display, Error)]
#[non_exhaustive]
</span><span class="kw">pub enum </span>JsonFieldError {
<span class="doccomment">/// Deserialize error.
</span><span class="attr">#[display(fmt = <span class="string">"Json deserialize error: {}"</span>, _0)]
</span>Deserialize(serde_json::Error),
<span class="doccomment">/// Content type error.
</span><span class="attr">#[display(fmt = <span class="string">"Content type error"</span>)]
</span>ContentType,
}
<span class="kw">impl </span>ResponseError <span class="kw">for </span>JsonFieldError {
<span class="kw">fn </span>status_code(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; StatusCode {
StatusCode::BAD_REQUEST
}
}
<span class="doccomment">/// Configuration for the [`Json`] field reader.
</span><span class="attr">#[derive(Clone)]
</span><span class="kw">pub struct </span>JsonConfig {
err_handler: FieldErrorHandler&lt;JsonFieldError&gt;,
validate_content_type: bool,
}
<span class="kw">const </span>DEFAULT_CONFIG: JsonConfig = JsonConfig {
err_handler: <span class="prelude-val">None</span>,
validate_content_type: <span class="bool-val">true</span>,
};
<span class="kw">impl </span>JsonConfig {
<span class="kw">pub fn </span>error_handler&lt;F&gt;(<span class="kw-2">mut </span><span class="self">self</span>, f: F) -&gt; <span class="self">Self
</span><span class="kw">where
</span>F: Fn(JsonFieldError, <span class="kw-2">&amp;</span>HttpRequest) -&gt; 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">/// Extract payload config from app data. Check both `T` and `Data&lt;T&gt;`, in that order, and fall
/// back to the default payload config.
</span><span class="kw">fn </span>from_req(req: <span class="kw-2">&amp;</span>HttpRequest) -&gt; <span class="kw-2">&amp;</span><span class="self">Self </span>{
req.app_data::&lt;<span class="self">Self</span>&gt;()
.or_else(|| req.app_data::&lt;web::Data&lt;<span class="self">Self</span>&gt;&gt;().map(|d| d.as_ref()))
.unwrap_or(<span class="kw-2">&amp;</span>DEFAULT_CONFIG)
}
<span class="kw">fn </span>map_error(<span class="kw-2">&amp;</span><span class="self">self</span>, req: <span class="kw-2">&amp;</span>HttpRequest, err: JsonFieldError) -&gt; Error {
<span class="kw">if let </span><span class="prelude-val">Some</span>(err_handler) = <span class="self">self</span>.err_handler.as_ref() {
(<span class="kw-2">*</span>err_handler)(err, req)
} <span class="kw">else </span>{
err.into()
}
}
<span class="doccomment">/// Sets whether or not the field must have a valid `Content-Type` header to be parsed.
</span><span class="kw">pub fn </span>validate_content_type(<span class="kw-2">mut </span><span class="self">self</span>, validate_content_type: bool) -&gt; <span class="self">Self </span>{
<span class="self">self</span>.validate_content_type = validate_content_type;
<span class="self">self
</span>}
}
<span class="kw">impl </span>Default <span class="kw">for </span>JsonConfig {
<span class="kw">fn </span>default() -&gt; <span class="self">Self </span>{
DEFAULT_CONFIG
}
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use </span>std::collections::HashMap;
<span class="kw">use </span>actix_web::{http::StatusCode, web, App, HttpResponse, Responder};
<span class="kw">use </span>bytes::Bytes;
<span class="kw">use </span><span class="kw">crate</span>::form::{
json::{Json, JsonConfig},
MultipartForm,
};
<span class="attr">#[derive(MultipartForm)]
</span><span class="kw">struct </span>JsonForm {
json: Json&lt;HashMap&lt;String, String&gt;&gt;,
}
<span class="kw">async fn </span>test_json_route(form: MultipartForm&lt;JsonForm&gt;) -&gt; <span class="kw">impl </span>Responder {
<span class="kw">let </span><span class="kw-2">mut </span>expected = HashMap::new();
expected.insert(<span class="string">"key1"</span>.to_owned(), <span class="string">"value1"</span>.to_owned());
expected.insert(<span class="string">"key2"</span>.to_owned(), <span class="string">"value2"</span>.to_owned());
<span class="macro">assert_eq!</span>(<span class="kw-2">&amp;*</span>form.json, <span class="kw-2">&amp;</span>expected);
HttpResponse::Ok().finish()
}
<span class="kw">const </span>TEST_JSON: <span class="kw-2">&amp;</span>str = <span class="string">r#"{"key1": "value1", "key2": "value2"}"#</span>;
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_json_without_content_type() {
<span class="kw">let </span>srv = actix_test::start(|| {
App::new()
.route(<span class="string">"/"</span>, web::post().to(test_json_route))
.app_data(JsonConfig::default().validate_content_type(<span class="bool-val">false</span>))
});
<span class="kw">let </span>(body, headers) = <span class="kw">crate</span>::test::create_form_data_payload_and_headers(
<span class="string">"json"</span>,
<span class="prelude-val">None</span>,
<span class="prelude-val">None</span>,
Bytes::from_static(TEST_JSON.as_bytes()),
);
<span class="kw">let </span><span class="kw-2">mut </span>req = srv.post(<span class="string">"/"</span>);
<span class="kw-2">*</span>req.headers_mut() = headers;
<span class="kw">let </span>res = req.send_body(body).<span class="kw">await</span>.unwrap();
<span class="macro">assert_eq!</span>(res.status(), StatusCode::OK);
}
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_content_type_validation() {
<span class="kw">let </span>srv = actix_test::start(|| {
App::new()
.route(<span class="string">"/"</span>, web::post().to(test_json_route))
.app_data(JsonConfig::default().validate_content_type(<span class="bool-val">true</span>))
});
<span class="comment">// Deny because wrong content type
</span><span class="kw">let </span>(body, headers) = <span class="kw">crate</span>::test::create_form_data_payload_and_headers(
<span class="string">"json"</span>,
<span class="prelude-val">None</span>,
<span class="prelude-val">Some</span>(mime::APPLICATION_OCTET_STREAM),
Bytes::from_static(TEST_JSON.as_bytes()),
);
<span class="kw">let </span><span class="kw-2">mut </span>req = srv.post(<span class="string">"/"</span>);
<span class="kw-2">*</span>req.headers_mut() = headers;
<span class="kw">let </span>res = req.send_body(body).<span class="kw">await</span>.unwrap();
<span class="macro">assert_eq!</span>(res.status(), StatusCode::BAD_REQUEST);
<span class="comment">// Allow because correct content type
</span><span class="kw">let </span>(body, headers) = <span class="kw">crate</span>::test::create_form_data_payload_and_headers(
<span class="string">"json"</span>,
<span class="prelude-val">None</span>,
<span class="prelude-val">Some</span>(mime::APPLICATION_JSON),
Bytes::from_static(TEST_JSON.as_bytes()),
);
<span class="kw">let </span><span class="kw-2">mut </span>req = srv.post(<span class="string">"/"</span>);
<span class="kw-2">*</span>req.headers_mut() = headers;
<span class="kw">let </span>res = req.send_body(body).<span class="kw">await</span>.unwrap();
<span class="macro">assert_eq!</span>(res.status(), StatusCode::OK);
}
}
</code></pre></div></section></main></body></html>

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</pre></div><pre class="rust"><code><span class="doccomment">//! Writes a field to a temporary file on disk.
</span><span class="kw">use </span>std::{
io,
path::{Path, PathBuf},
sync::Arc,
};
<span class="kw">use </span>actix_web::{http::StatusCode, web, Error, HttpRequest, ResponseError};
<span class="kw">use </span>derive_more::{Display, Error};
<span class="kw">use </span>futures_core::future::LocalBoxFuture;
<span class="kw">use </span>futures_util::TryStreamExt <span class="kw">as _</span>;
<span class="kw">use </span>mime::Mime;
<span class="kw">use </span>tempfile::NamedTempFile;
<span class="kw">use </span>tokio::io::AsyncWriteExt;
<span class="kw">use </span><span class="kw">super</span>::FieldErrorHandler;
<span class="kw">use crate</span>::{
form::{FieldReader, Limits},
Field, MultipartError,
};
<span class="doccomment">/// Write the field to a temporary file on disk.
</span><span class="attr">#[derive(Debug)]
</span><span class="kw">pub struct </span>TempFile {
<span class="doccomment">/// The temporary file on disk.
</span><span class="kw">pub </span>file: NamedTempFile,
<span class="doccomment">/// The value of the `content-type` header.
</span><span class="kw">pub </span>content_type: <span class="prelude-ty">Option</span>&lt;Mime&gt;,
<span class="doccomment">/// The `filename` value in the `content-disposition` header.
</span><span class="kw">pub </span>file_name: <span class="prelude-ty">Option</span>&lt;String&gt;,
<span class="doccomment">/// The size in bytes of the file.
</span><span class="kw">pub </span>size: usize,
}
<span class="kw">impl</span>&lt;<span class="lifetime">'t</span>&gt; FieldReader&lt;<span class="lifetime">'t</span>&gt; <span class="kw">for </span>TempFile {
<span class="kw">type </span>Future = LocalBoxFuture&lt;<span class="lifetime">'t</span>, <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, MultipartError&gt;&gt;;
<span class="kw">fn </span>read_field(req: <span class="kw-2">&amp;</span><span class="lifetime">'t </span>HttpRequest, <span class="kw-2">mut </span>field: Field, limits: <span class="kw-2">&amp;</span><span class="lifetime">'t </span><span class="kw-2">mut </span>Limits) -&gt; <span class="self">Self</span>::Future {
Box::pin(<span class="kw">async move </span>{
<span class="kw">let </span>config = TempFileConfig::from_req(req);
<span class="kw">let </span>field_name = field.name().to_owned();
<span class="kw">let </span><span class="kw-2">mut </span>size = <span class="number">0</span>;
<span class="kw">let </span>file = config
.create_tempfile()
.map_err(|err| config.map_error(req, <span class="kw-2">&amp;</span>field_name, TempFileError::FileIo(err)))<span class="question-mark">?</span>;
<span class="kw">let </span><span class="kw-2">mut </span>file_async =
tokio::fs::File::from_std(file.reopen().map_err(|err| {
config.map_error(req, <span class="kw-2">&amp;</span>field_name, TempFileError::FileIo(err))
})<span class="question-mark">?</span>);
<span class="kw">while let </span><span class="prelude-val">Some</span>(chunk) = field.try_next().<span class="kw">await</span><span class="question-mark">? </span>{
limits.try_consume_limits(chunk.len(), <span class="bool-val">false</span>)<span class="question-mark">?</span>;
size += chunk.len();
file_async.write_all(chunk.as_ref()).<span class="kw">await</span>.map_err(|err| {
config.map_error(req, <span class="kw-2">&amp;</span>field_name, TempFileError::FileIo(err))
})<span class="question-mark">?</span>;
}
file_async
.flush()
.<span class="kw">await
</span>.map_err(|err| config.map_error(req, <span class="kw-2">&amp;</span>field_name, TempFileError::FileIo(err)))<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(TempFile {
file,
content_type: field.content_type().map(ToOwned::to_owned),
file_name: field
.content_disposition()
.get_filename()
.map(str::to_owned),
size,
})
})
}
}
<span class="attr">#[derive(Debug, Display, Error)]
#[non_exhaustive]
</span><span class="kw">pub enum </span>TempFileError {
<span class="doccomment">/// File I/O Error
</span><span class="attr">#[display(fmt = <span class="string">"File I/O error: {}"</span>, _0)]
</span>FileIo(std::io::Error),
}
<span class="kw">impl </span>ResponseError <span class="kw">for </span>TempFileError {
<span class="kw">fn </span>status_code(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; StatusCode {
StatusCode::INTERNAL_SERVER_ERROR
}
}
<span class="doccomment">/// Configuration for the [`TempFile`] field reader.
</span><span class="attr">#[derive(Clone)]
</span><span class="kw">pub struct </span>TempFileConfig {
err_handler: FieldErrorHandler&lt;TempFileError&gt;,
directory: <span class="prelude-ty">Option</span>&lt;PathBuf&gt;,
}
<span class="kw">impl </span>TempFileConfig {
<span class="kw">fn </span>create_tempfile(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; io::Result&lt;NamedTempFile&gt; {
<span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>dir) = <span class="self">self</span>.directory {
NamedTempFile::new_in(dir)
} <span class="kw">else </span>{
NamedTempFile::new()
}
}
}
<span class="kw">impl </span>TempFileConfig {
<span class="doccomment">/// Sets custom error handler.
</span><span class="kw">pub fn </span>error_handler&lt;F&gt;(<span class="kw-2">mut </span><span class="self">self</span>, f: F) -&gt; <span class="self">Self
</span><span class="kw">where
</span>F: Fn(TempFileError, <span class="kw-2">&amp;</span>HttpRequest) -&gt; 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&lt;T&gt;`, in that order, and fall
/// back to the default payload config.
</span><span class="kw">fn </span>from_req(req: <span class="kw-2">&amp;</span>HttpRequest) -&gt; <span class="kw-2">&amp;</span><span class="self">Self </span>{
req.app_data::&lt;<span class="self">Self</span>&gt;()
.or_else(|| req.app_data::&lt;web::Data&lt;<span class="self">Self</span>&gt;&gt;().map(|d| d.as_ref()))
.unwrap_or(<span class="kw-2">&amp;</span>DEFAULT_CONFIG)
}
<span class="kw">fn </span>map_error(<span class="kw-2">&amp;</span><span class="self">self</span>, req: <span class="kw-2">&amp;</span>HttpRequest, field_name: <span class="kw-2">&amp;</span>str, err: TempFileError) -&gt; MultipartError {
<span class="kw">let </span>source = <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>err_handler) = <span class="self">self</span>.err_handler {
(err_handler)(err, req)
} <span class="kw">else </span>{
err.into()
};
MultipartError::Field {
field_name: field_name.to_owned(),
source,
}
}
<span class="doccomment">/// Sets the directory that temp files will be created in.
///
/// The default temporary file location is platform dependent.
</span><span class="kw">pub fn </span>directory(<span class="kw-2">mut </span><span class="self">self</span>, dir: <span class="kw">impl </span>AsRef&lt;Path&gt;) -&gt; <span class="self">Self </span>{
<span class="self">self</span>.directory = <span class="prelude-val">Some</span>(dir.as_ref().to_owned());
<span class="self">self
</span>}
}
<span class="kw">const </span>DEFAULT_CONFIG: TempFileConfig = TempFileConfig {
err_handler: <span class="prelude-val">None</span>,
directory: <span class="prelude-val">None</span>,
};
<span class="kw">impl </span>Default <span class="kw">for </span>TempFileConfig {
<span class="kw">fn </span>default() -&gt; <span class="self">Self </span>{
DEFAULT_CONFIG
}
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use </span>std::io::{Cursor, Read};
<span class="kw">use </span>actix_multipart_rfc7578::client::multipart;
<span class="kw">use </span>actix_web::{http::StatusCode, web, App, HttpResponse, Responder};
<span class="kw">use </span><span class="kw">crate</span>::form::{tempfile::TempFile, tests::send_form, MultipartForm};
<span class="attr">#[derive(MultipartForm)]
</span><span class="kw">struct </span>FileForm {
file: TempFile,
}
<span class="kw">async fn </span>test_file_route(form: MultipartForm&lt;FileForm&gt;) -&gt; <span class="kw">impl </span>Responder {
<span class="kw">let </span><span class="kw-2">mut </span>form = form.into_inner();
<span class="kw">let </span><span class="kw-2">mut </span>contents = String::new();
form.file.file.read_to_string(<span class="kw-2">&amp;mut </span>contents).unwrap();
<span class="macro">assert_eq!</span>(contents, <span class="string">"Hello, world!"</span>);
<span class="macro">assert_eq!</span>(form.file.file_name.unwrap(), <span class="string">"testfile.txt"</span>);
<span class="macro">assert_eq!</span>(form.file.content_type.unwrap(), mime::TEXT_PLAIN);
HttpResponse::Ok().finish()
}
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_file_upload() {
<span class="kw">let </span>srv = actix_test::start(|| App::new().route(<span class="string">"/"</span>, web::post().to(test_file_route)));
<span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
<span class="kw">let </span>bytes = Cursor::new(<span class="string">"Hello, world!"</span>);
form.add_reader_file_with_mime(<span class="string">"file"</span>, bytes, <span class="string">"testfile.txt"</span>, mime::TEXT_PLAIN);
<span class="kw">let </span>response = send_form(<span class="kw-2">&amp;</span>srv, form, <span class="string">"/"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
}
}
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</pre></div><pre class="rust"><code><span class="doccomment">//! Deserializes a field from plain text.
</span><span class="kw">use </span>std::{str, sync::Arc};
<span class="kw">use </span>actix_web::{http::StatusCode, web, Error, HttpRequest, ResponseError};
<span class="kw">use </span>derive_more::{Deref, DerefMut, Display, Error};
<span class="kw">use </span>futures_core::future::LocalBoxFuture;
<span class="kw">use </span>serde::de::DeserializeOwned;
<span class="kw">use </span><span class="kw">super</span>::FieldErrorHandler;
<span class="kw">use crate</span>::{
form::{bytes::Bytes, FieldReader, Limits},
Field, MultipartError,
};
<span class="doccomment">/// Deserialize from plain text.
///
/// Internally this uses [`serde_plain`] for deserialization, which supports primitive types
/// including strings, numbers, and simple enums.
</span><span class="attr">#[derive(Debug, Deref, DerefMut)]
</span><span class="kw">pub struct </span>Text&lt;T: DeserializeOwned&gt;(<span class="kw">pub </span>T);
<span class="kw">impl</span>&lt;T: DeserializeOwned&gt; Text&lt;T&gt; {
<span class="doccomment">/// Unwraps into inner value.
</span><span class="kw">pub fn </span>into_inner(<span class="self">self</span>) -&gt; T {
<span class="self">self</span>.<span class="number">0
</span>}
}
<span class="kw">impl</span>&lt;<span class="lifetime">'t</span>, T&gt; FieldReader&lt;<span class="lifetime">'t</span>&gt; <span class="kw">for </span>Text&lt;T&gt;
<span class="kw">where
</span>T: DeserializeOwned + <span class="lifetime">'static</span>,
{
<span class="kw">type </span>Future = LocalBoxFuture&lt;<span class="lifetime">'t</span>, <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>, MultipartError&gt;&gt;;
<span class="kw">fn </span>read_field(req: <span class="kw-2">&amp;</span><span class="lifetime">'t </span>HttpRequest, field: Field, limits: <span class="kw-2">&amp;</span><span class="lifetime">'t </span><span class="kw-2">mut </span>Limits) -&gt; <span class="self">Self</span>::Future {
Box::pin(<span class="kw">async move </span>{
<span class="kw">let </span>config = TextConfig::from_req(req);
<span class="kw">let </span>field_name = field.name().to_owned();
<span class="kw">if </span>config.validate_content_type {
<span class="kw">let </span>valid = <span class="kw">if let </span><span class="prelude-val">Some</span>(mime) = field.content_type() {
mime.subtype() == mime::PLAIN || mime.suffix() == <span class="prelude-val">Some</span>(mime::PLAIN)
} <span class="kw">else </span>{
<span class="comment">// https://datatracker.ietf.org/doc/html/rfc7578#section-4.4
// content type defaults to text/plain, so None should be considered valid
</span><span class="bool-val">true
</span>};
<span class="kw">if </span>!valid {
<span class="kw">return </span><span class="prelude-val">Err</span>(MultipartError::Field {
field_name,
source: config.map_error(req, TextError::ContentType),
});
}
}
<span class="kw">let </span>bytes = Bytes::read_field(req, field, limits).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>text = str::from_utf8(<span class="kw-2">&amp;</span>bytes.data).map_err(|err| MultipartError::Field {
field_name: field_name.clone(),
source: config.map_error(req, TextError::Utf8Error(err)),
})<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(Text(serde_plain::from_str(text).map_err(|err| {
MultipartError::Field {
field_name,
source: config.map_error(req, TextError::Deserialize(err)),
}
})<span class="question-mark">?</span>))
})
}
}
<span class="attr">#[derive(Debug, Display, Error)]
#[non_exhaustive]
</span><span class="kw">pub enum </span>TextError {
<span class="doccomment">/// UTF-8 decoding error.
</span><span class="attr">#[display(fmt = <span class="string">"UTF-8 decoding error: {}"</span>, _0)]
</span>Utf8Error(str::Utf8Error),
<span class="doccomment">/// Deserialize error.
</span><span class="attr">#[display(fmt = <span class="string">"Plain text deserialize error: {}"</span>, _0)]
</span>Deserialize(serde_plain::Error),
<span class="doccomment">/// Content type error.
</span><span class="attr">#[display(fmt = <span class="string">"Content type error"</span>)]
</span>ContentType,
}
<span class="kw">impl </span>ResponseError <span class="kw">for </span>TextError {
<span class="kw">fn </span>status_code(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; StatusCode {
StatusCode::BAD_REQUEST
}
}
<span class="doccomment">/// Configuration for the [`Text`] field reader.
</span><span class="attr">#[derive(Clone)]
</span><span class="kw">pub struct </span>TextConfig {
err_handler: FieldErrorHandler&lt;TextError&gt;,
validate_content_type: bool,
}
<span class="kw">impl </span>TextConfig {
<span class="doccomment">/// Sets custom error handler.
</span><span class="kw">pub fn </span>error_handler&lt;F&gt;(<span class="kw-2">mut </span><span class="self">self</span>, f: F) -&gt; <span class="self">Self
</span><span class="kw">where
</span>F: Fn(TextError, <span class="kw-2">&amp;</span>HttpRequest) -&gt; 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&lt;T&gt;`, in that order, and fall
/// back to the default payload config.
</span><span class="kw">fn </span>from_req(req: <span class="kw-2">&amp;</span>HttpRequest) -&gt; <span class="kw-2">&amp;</span><span class="self">Self </span>{
req.app_data::&lt;<span class="self">Self</span>&gt;()
.or_else(|| req.app_data::&lt;web::Data&lt;<span class="self">Self</span>&gt;&gt;().map(|d| d.as_ref()))
.unwrap_or(<span class="kw-2">&amp;</span>DEFAULT_CONFIG)
}
<span class="kw">fn </span>map_error(<span class="kw-2">&amp;</span><span class="self">self</span>, req: <span class="kw-2">&amp;</span>HttpRequest, err: TextError) -&gt; Error {
<span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>err_handler) = <span class="self">self</span>.err_handler {
(err_handler)(err, req)
} <span class="kw">else </span>{
err.into()
}
}
<span class="doccomment">/// Sets whether or not the field must have a valid `Content-Type` header to be parsed.
///
/// Note that an empty `Content-Type` is also accepted, as the multipart specification defines
/// `text/plain` as the default for text fields.
</span><span class="kw">pub fn </span>validate_content_type(<span class="kw-2">mut </span><span class="self">self</span>, validate_content_type: bool) -&gt; <span class="self">Self </span>{
<span class="self">self</span>.validate_content_type = validate_content_type;
<span class="self">self
</span>}
}
<span class="kw">const </span>DEFAULT_CONFIG: TextConfig = TextConfig {
err_handler: <span class="prelude-val">None</span>,
validate_content_type: <span class="bool-val">true</span>,
};
<span class="kw">impl </span>Default <span class="kw">for </span>TextConfig {
<span class="kw">fn </span>default() -&gt; <span class="self">Self </span>{
DEFAULT_CONFIG
}
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use </span>std::io::Cursor;
<span class="kw">use </span>actix_multipart_rfc7578::client::multipart;
<span class="kw">use </span>actix_web::{http::StatusCode, web, App, HttpResponse, Responder};
<span class="kw">use </span><span class="kw">crate</span>::form::{
tests::send_form,
text::{Text, TextConfig},
MultipartForm,
};
<span class="attr">#[derive(MultipartForm)]
</span><span class="kw">struct </span>TextForm {
number: Text&lt;i32&gt;,
}
<span class="kw">async fn </span>test_text_route(form: MultipartForm&lt;TextForm&gt;) -&gt; <span class="kw">impl </span>Responder {
<span class="macro">assert_eq!</span>(<span class="kw-2">*</span>form.number, <span class="number">1025</span>);
HttpResponse::Ok().finish()
}
<span class="attr">#[actix_rt::test]
</span><span class="kw">async fn </span>test_content_type_validation() {
<span class="kw">let </span>srv = actix_test::start(|| {
App::new()
.route(<span class="string">"/"</span>, web::post().to(test_text_route))
.app_data(TextConfig::default().validate_content_type(<span class="bool-val">true</span>))
});
<span class="comment">// Deny because wrong content type
</span><span class="kw">let </span>bytes = Cursor::new(<span class="string">"1025"</span>);
<span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_reader_file_with_mime(<span class="string">"number"</span>, bytes, <span class="string">""</span>, mime::APPLICATION_OCTET_STREAM);
<span class="kw">let </span>response = send_form(<span class="kw-2">&amp;</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">// Allow because correct content type
</span><span class="kw">let </span>bytes = Cursor::new(<span class="string">"1025"</span>);
<span class="kw">let </span><span class="kw-2">mut </span>form = multipart::Form::default();
form.add_reader_file_with_mime(<span class="string">"number"</span>, bytes, <span class="string">""</span>, mime::TEXT_PLAIN);
<span class="kw">let </span>response = send_form(<span class="kw-2">&amp;</span>srv, form, <span class="string">"/"</span>).<span class="kw">await</span>;
<span class="macro">assert_eq!</span>(response.status(), StatusCode::OK);
}
}
</code></pre></div></section></main></body></html>

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</pre></div><pre class="rust"><code><span class="doccomment">//! Multipart form support for Actix Web.
//! # Examples
//! ```no_run
//! use actix_web::{post, App, HttpServer, Responder};
//!
//! use actix_multipart::form::{json::Json as MPJson, tempfile::TempFile, MultipartForm};
//! use serde::Deserialize;
//!
//! #[derive(Debug, Deserialize)]
//! struct Metadata {
//! name: String,
//! }
//!
//! #[derive(Debug, MultipartForm)]
//! struct UploadForm {
//! #[multipart(limit = "100MB")]
//! file: TempFile,
//! json: MPJson&lt;Metadata&gt;,
//! }
//!
//! #[post("/videos")]
//! pub async fn post_video(MultipartForm(form): MultipartForm&lt;UploadForm&gt;) -&gt; impl Responder {
//! format!(
//! "Uploaded file {}, with size: {}",
//! form.json.name, form.file.size
//! )
//! }
//!
//! #[actix_web::main]
//! async fn main() -&gt; std::io::Result&lt;()&gt; {
//! HttpServer::new(move || App::new().service(post_video))
//! .bind(("127.0.0.1", 8080))?
//! .run()
//! .await
//! }
//! ```
</span><span class="attr">#![deny(rust_2018_idioms, nonstandard_style)]
#![warn(future_incompatible)]
#![allow(clippy::borrow_interior_mutable_const)]
#![doc(html_logo_url = <span class="string">"https://actix.rs/img/logo.png"</span>)]
#![doc(html_favicon_url = <span class="string">"https://actix.rs/favicon.ico"</span>)]
#![cfg_attr(docsrs, feature(doc_auto_cfg))]
</span><span class="comment">// This allows us to use the actix_multipart_derive within this crate's tests
</span><span class="attr">#[cfg(test)]
</span><span class="kw">extern crate </span><span class="self">self </span><span class="kw">as </span>actix_multipart;
<span class="kw">mod </span>error;
<span class="kw">mod </span>extractor;
<span class="kw">pub mod </span>form;
<span class="kw">mod </span>server;
<span class="kw">pub mod </span>test;
<span class="kw">pub use </span><span class="self">self</span>::{
error::MultipartError,
server::{Field, Multipart},
test::{
create_form_data_payload_and_headers, create_form_data_payload_and_headers_with_boundary,
},
};
</code></pre></div></section></main></body></html>

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</pre></div><pre class="rust"><code><span class="kw">use </span>actix_web::http::header::{<span class="self">self</span>, HeaderMap};
<span class="kw">use </span>bytes::{BufMut <span class="kw">as _</span>, Bytes, BytesMut};
<span class="kw">use </span>mime::Mime;
<span class="kw">use </span>rand::{
distributions::{Alphanumeric, DistString <span class="kw">as _</span>},
thread_rng,
};
<span class="kw">const </span>CRLF: <span class="kw-2">&amp;</span>[u8] = <span class="string">b"\r\n"</span>;
<span class="kw">const </span>CRLF_CRLF: <span class="kw-2">&amp;</span>[u8] = <span class="string">b"\r\n\r\n"</span>;
<span class="kw">const </span>HYPHENS: <span class="kw-2">&amp;</span>[u8] = <span class="string">b"--"</span>;
<span class="kw">const </span>BOUNDARY_PREFIX: <span class="kw-2">&amp;</span>str = <span class="string">"------------------------"</span>;
<span class="doccomment">/// Constructs a `multipart/form-data` payload from bytes and metadata.
///
/// Returned header map can be extended or merged with existing headers.
///
/// Multipart boundary used is a random alphanumeric string.
///
/// # Examples
///
/// ```
/// use actix_multipart::test::create_form_data_payload_and_headers;
/// use actix_web::test::TestRequest;
/// use bytes::Bytes;
/// use memchr::memmem::find;
///
/// let (body, headers) = create_form_data_payload_and_headers(
/// "foo",
/// Some("lorem.txt".to_owned()),
/// Some(mime::TEXT_PLAIN_UTF_8),
/// Bytes::from_static(b"Lorem ipsum."),
/// );
///
/// assert!(find(&amp;body, b"foo").is_some());
/// assert!(find(&amp;body, b"lorem.txt").is_some());
/// assert!(find(&amp;body, b"text/plain; charset=utf-8").is_some());
/// assert!(find(&amp;body, b"Lorem ipsum.").is_some());
///
/// let req = TestRequest::default();
///
/// // merge header map into existing test request and set multipart body
/// let req = headers
/// .into_iter()
/// .fold(req, |req, hdr| req.insert_header(hdr))
/// .set_payload(body)
/// .to_http_request();
///
/// assert!(
/// req.headers()
/// .get("content-type")
/// .unwrap()
/// .to_str()
/// .unwrap()
/// .starts_with("multipart/form-data; boundary=\"")
/// );
/// ```
</span><span class="kw">pub fn </span>create_form_data_payload_and_headers(
name: <span class="kw-2">&amp;</span>str,
filename: <span class="prelude-ty">Option</span>&lt;String&gt;,
content_type: <span class="prelude-ty">Option</span>&lt;Mime&gt;,
file: Bytes,
) -&gt; (Bytes, HeaderMap) {
<span class="kw">let </span>boundary = Alphanumeric.sample_string(<span class="kw-2">&amp;mut </span>thread_rng(), <span class="number">32</span>);
create_form_data_payload_and_headers_with_boundary(
<span class="kw-2">&amp;</span>boundary,
name,
filename,
content_type,
file,
)
}
<span class="doccomment">/// Constructs a `multipart/form-data` payload from bytes and metadata with a fixed boundary.
///
/// See [`create_form_data_payload_and_headers`] for more details.
</span><span class="kw">pub fn </span>create_form_data_payload_and_headers_with_boundary(
boundary: <span class="kw-2">&amp;</span>str,
name: <span class="kw-2">&amp;</span>str,
filename: <span class="prelude-ty">Option</span>&lt;String&gt;,
content_type: <span class="prelude-ty">Option</span>&lt;Mime&gt;,
file: Bytes,
) -&gt; (Bytes, HeaderMap) {
<span class="kw">let </span><span class="kw-2">mut </span>buf = BytesMut::with_capacity(file.len() + <span class="number">128</span>);
<span class="kw">let </span>boundary_str = [BOUNDARY_PREFIX, boundary].concat();
<span class="kw">let </span>boundary = boundary_str.as_bytes();
buf.put(HYPHENS);
buf.put(boundary);
buf.put(CRLF);
buf.put(<span class="macro">format!</span>(<span class="string">"Content-Disposition: form-data; name=\"{name}\""</span>).as_bytes());
<span class="kw">if let </span><span class="prelude-val">Some</span>(filename) = filename {
buf.put(<span class="macro">format!</span>(<span class="string">"; filename=\"{filename}\""</span>).as_bytes());
}
buf.put(CRLF);
<span class="kw">if let </span><span class="prelude-val">Some</span>(ct) = content_type {
buf.put(<span class="macro">format!</span>(<span class="string">"Content-Type: {ct}"</span>).as_bytes());
buf.put(CRLF);
}
buf.put(<span class="macro">format!</span>(<span class="string">"Content-Length: {}"</span>, file.len()).as_bytes());
buf.put(CRLF_CRLF);
buf.put(file);
buf.put(CRLF);
buf.put(HYPHENS);
buf.put(boundary);
buf.put(HYPHENS);
buf.put(CRLF);
<span class="kw">let </span><span class="kw-2">mut </span>headers = HeaderMap::new();
headers.insert(
header::CONTENT_TYPE,
<span class="macro">format!</span>(<span class="string">"multipart/form-data; boundary=\"{boundary_str}\""</span>)
.parse()
.unwrap(),
);
(buf.freeze(), headers)
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use </span>std::convert::Infallible;
<span class="kw">use </span>futures_util::stream;
<span class="kw">use super</span>::<span class="kw-2">*</span>;
<span class="kw">fn </span>find_boundary(headers: <span class="kw-2">&amp;</span>HeaderMap) -&gt; String {
headers
.get(<span class="string">"content-type"</span>)
.unwrap()
.to_str()
.unwrap()
.parse::&lt;mime::Mime&gt;()
.unwrap()
.get_param(mime::BOUNDARY)
.unwrap()
.as_str()
.to_owned()
}
<span class="attr">#[test]
</span><span class="kw">fn </span>wire_format() {
<span class="kw">let </span>(pl, headers) = create_form_data_payload_and_headers_with_boundary(
<span class="string">"qWeRtYuIoP"</span>,
<span class="string">"foo"</span>,
<span class="prelude-val">None</span>,
<span class="prelude-val">None</span>,
Bytes::from_static(<span class="string">b"Lorem ipsum dolor\nsit ame."</span>),
);
<span class="macro">assert_eq!</span>(
find_boundary(<span class="kw-2">&amp;</span>headers),
<span class="string">"------------------------qWeRtYuIoP"</span>,
);
<span class="macro">assert_eq!</span>(
std::str::from_utf8(<span class="kw-2">&amp;</span>pl).unwrap(),
<span class="string">"--------------------------qWeRtYuIoP\r\n\
Content-Disposition: form-data; name=\"foo\"\r\n\
Content-Length: 26\r\n\
\r\n\
Lorem ipsum dolor\n\
sit ame.\r\n\
--------------------------qWeRtYuIoP--\r\n"</span>,
);
<span class="kw">let </span>(pl, _headers) = create_form_data_payload_and_headers_with_boundary(
<span class="string">"qWeRtYuIoP"</span>,
<span class="string">"foo"</span>,
<span class="prelude-val">Some</span>(<span class="string">"Lorem.txt"</span>.to_owned()),
<span class="prelude-val">Some</span>(mime::TEXT_PLAIN_UTF_8),
Bytes::from_static(<span class="string">b"Lorem ipsum dolor\nsit ame."</span>),
);
<span class="macro">assert_eq!</span>(
std::str::from_utf8(<span class="kw-2">&amp;</span>pl).unwrap(),
<span class="string">"--------------------------qWeRtYuIoP\r\n\
Content-Disposition: form-data; name=\"foo\"; filename=\"Lorem.txt\"\r\n\
Content-Type: text/plain; charset=utf-8\r\n\
Content-Length: 26\r\n\
\r\n\
Lorem ipsum dolor\n\
sit ame.\r\n\
--------------------------qWeRtYuIoP--\r\n"</span>,
);
}
<span class="doccomment">/// Test using an external library to prevent the two-wrongs-make-a-right class of errors.
</span><span class="attr">#[actix_web::test]
</span><span class="kw">async fn </span>ecosystem_compat() {
<span class="kw">let </span>(pl, headers) = create_form_data_payload_and_headers(
<span class="string">"foo"</span>,
<span class="prelude-val">None</span>,
<span class="prelude-val">None</span>,
Bytes::from_static(<span class="string">b"Lorem ipsum dolor\nsit ame."</span>),
);
<span class="kw">let </span>boundary = find_boundary(<span class="kw-2">&amp;</span>headers);
<span class="kw">let </span>pl = stream::once(<span class="kw">async </span>{ <span class="prelude-val">Ok</span>::&lt;<span class="kw">_</span>, Infallible&gt;(pl) });
<span class="kw">let </span><span class="kw-2">mut </span>form = multer::Multipart::new(pl, boundary);
<span class="kw">let </span>field = form.next_field().<span class="kw">await</span>.unwrap().unwrap();
<span class="macro">assert_eq!</span>(field.name().unwrap(), <span class="string">"foo"</span>);
<span class="macro">assert_eq!</span>(field.file_name(), <span class="prelude-val">None</span>);
<span class="macro">assert_eq!</span>(field.content_type(), <span class="prelude-val">None</span>);
<span class="macro">assert!</span>(field.bytes().<span class="kw">await</span>.unwrap().starts_with(<span class="string">b"Lorem"</span>));
}
}
</code></pre></div></section></main></body></html>