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|
use actix_web::{
http::{header, StatusCode},
HttpRequest, HttpResponse,
};
use futures::TryStreamExt;
use std::{
io::Write,
path::{Component, PathBuf},
};
use crate::errors::{self, ContextualError};
use crate::listing::{self, SortingMethod, SortingOrder};
use crate::renderer;
/// Create future to save file.
async fn save_file(
field: actix_multipart::Field,
file_path: PathBuf,
overwrite_files: bool,
) -> Result<u64, ContextualError> {
if !overwrite_files && file_path.exists() {
return Err(ContextualError::DuplicateFileError);
}
let file = std::fs::File::create(&file_path).map_err(|e| {
ContextualError::IoError(format!("Failed to create {}", file_path.display()), e)
})?;
let (_, written_len) = field
.map_err(ContextualError::MultipartError)
.try_fold((file, 0u64), |(mut file, written_len), bytes| async move {
file.write_all(bytes.as_ref())
.map_err(|e| ContextualError::IoError("Failed to write to file".to_string(), e))?;
Ok((file, written_len + bytes.len() as u64))
})
.await?;
Ok(written_len)
}
/// Create new future to handle file as multipart data.
async fn handle_multipart(
field: actix_multipart::Field,
file_path: PathBuf,
overwrite_files: bool,
) -> Result<u64, ContextualError> {
let filename = field
.content_disposition()
.and_then(|cd| cd.get_filename().map(String::from))
.ok_or_else(|| {
ContextualError::ParseError(
"HTTP header".to_string(),
"Failed to retrieve the name of the file to upload".to_string(),
)
})?;
match std::fs::metadata(&file_path) {
Err(_) => Err(ContextualError::InsufficientPermissionsError(
file_path.display().to_string(),
)),
Ok(metadata) if !metadata.is_dir() => Err(ContextualError::InvalidPathError(format!(
"cannot upload file to {}, since it's not a directory",
&file_path.display()
))),
Ok(metadata) if metadata.permissions().readonly() => Err(
ContextualError::InsufficientPermissionsError(file_path.display().to_string()),
),
Ok(_) => Ok(()),
}?;
save_file(field, file_path.join(filename), overwrite_files).await
}
/// Handle incoming request to upload file.
/// Target file path is expected as path parameter in URI and is interpreted as relative from
/// server root directory. Any path which will go outside of this directory is considered
/// invalid.
/// This method returns future.
#[allow(clippy::too_many_arguments)]
pub async fn upload_file(
req: HttpRequest,
payload: actix_web::web::Payload,
uses_random_route: bool,
favicon_route: String,
css_route: String,
default_color_scheme: String,
default_color_scheme_dark: String,
hide_version_footer: bool,
) -> Result<HttpResponse, actix_web::Error> {
let conf = req.app_data::<crate::MiniserveConfig>().unwrap();
let return_path = if let Some(header) = req.headers().get(header::REFERER) {
header.to_str().unwrap_or("/").to_owned()
} else {
"/".to_string()
};
let query_params = listing::extract_query_parameters(&req);
let upload_path = match query_params.path.clone() {
Some(path) => match path.strip_prefix(Component::RootDir) {
Ok(stripped_path) => stripped_path.to_owned(),
Err(_) => path.clone(),
},
None => {
let err = ContextualError::InvalidHttpRequestError(
"Missing query parameter 'path'".to_string(),
);
return Ok(create_error_response(
&err.to_string(),
StatusCode::BAD_REQUEST,
&return_path,
query_params.sort,
query_params.order,
uses_random_route,
&favicon_route,
&css_route,
&default_color_scheme,
&default_color_scheme_dark,
hide_version_footer,
));
}
};
let app_root_dir = match conf.path.canonicalize() {
Ok(dir) => dir,
Err(e) => {
let err = ContextualError::IoError(
"Failed to resolve path served by miniserve".to_string(),
e,
);
return Ok(create_error_response(
&err.to_string(),
StatusCode::INTERNAL_SERVER_ERROR,
&return_path,
query_params.sort,
query_params.order,
uses_random_route,
&favicon_route,
&css_route,
&default_color_scheme,
&default_color_scheme_dark,
hide_version_footer,
));
}
};
// If the target path is under the app root directory, save the file.
let target_dir = match &app_root_dir.join(upload_path).canonicalize() {
Ok(path) if path.starts_with(&app_root_dir) => path.clone(),
_ => {
let err = ContextualError::InvalidHttpRequestError(
"Invalid value for 'path' parameter".to_string(),
);
return Ok(create_error_response(
&err.to_string(),
StatusCode::BAD_REQUEST,
&return_path,
query_params.sort,
query_params.order,
uses_random_route,
&favicon_route,
&css_route,
&default_color_scheme,
&default_color_scheme_dark,
hide_version_footer,
));
}
};
let overwrite_files = conf.overwrite_files;
let default_color_scheme = conf.default_color_scheme.clone();
let default_color_scheme_dark = conf.default_color_scheme_dark.clone();
match actix_multipart::Multipart::new(req.headers(), payload)
.map_err(ContextualError::MultipartError)
.and_then(move |field| handle_multipart(field, target_dir.clone(), overwrite_files))
.try_collect::<Vec<u64>>()
.await
{
Ok(_) => Ok(HttpResponse::SeeOther()
.append_header((header::LOCATION, return_path))
.finish()),
Err(e) => Ok(create_error_response(
&e.to_string(),
StatusCode::INTERNAL_SERVER_ERROR,
&return_path,
query_params.sort,
query_params.order,
uses_random_route,
&favicon_route,
&css_route,
&default_color_scheme,
&default_color_scheme_dark,
hide_version_footer,
)),
}
}
/// Convenience method for creating response errors, if file upload fails.
#[allow(clippy::too_many_arguments)]
fn create_error_response(
description: &str,
error_code: StatusCode,
return_path: &str,
sorting_method: Option<SortingMethod>,
sorting_order: Option<SortingOrder>,
uses_random_route: bool,
favicon_route: &str,
css_route: &str,
default_color_scheme: &str,
default_color_scheme_dark: &str,
hide_version_footer: bool,
) -> HttpResponse {
errors::log_error_chain(description.to_string());
HttpResponse::BadRequest()
.content_type("text/html; charset=utf-8")
.body(
renderer::render_error(
description,
error_code,
return_path,
sorting_method,
sorting_order,
true,
!uses_random_route,
favicon_route,
css_route,
default_color_scheme,
default_color_scheme_dark,
hide_version_footer,
)
.into_string(),
)
}
|
