Allow to set the accept input attribute to arbitrary values

README.md

@@ -70,6 +70,13 @@ Sometimes this is just a more practical and quick way than doing things properly
 
 (where `$FILE` is the path to the file. This uses miniserve's default port of 8080)
 
+### Take pictures and upload them from smartphones:
+
+    miniserve -u -m image -q
+
+This uses the `--media-type` option, which sends a hint for the expected media type to the browser.
+Some mobile browsers like Firefox on Android will offer to open the camera app when seeing this.
+
 ## Features
 
 - Easy to use

src/args.rs

@@ -8,6 +8,13 @@ use crate::auth;
 use crate::errors::ContextualError;
 use crate::renderer;
 
+#[derive(clap::ArgEnum, Clone)]
+pub enum MediaType {
+    Image,
+    Audio,
+    Video,
+}
+
 #[derive(Parser)]
 #[clap(name = "miniserve", author, about, version)]
 pub struct CliArgs {
@@ -104,6 +111,19 @@ pub struct CliArgs {
     #[clap(short = 'u', long = "upload-files")]
     pub file_upload: bool,
 
+    /// Specify uploadable media types
+    #[clap(arg_enum, short = 'm', long = "media-type", requires = "file-upload")]
+    pub media_type: Option<Vec<MediaType>>,
+
+    /// Directly specify the uploadable media type expression
+    #[clap(
+        short = 'M',
+        long = "raw-media-type",
+        requires = "file-upload",
+        conflicts_with = "media-type"
+    )]
+    pub media_type_raw: Option<String>,
+
     /// Enable overriding existing files during file upload
     #[clap(short = 'o', long = "overwrite-files")]
     pub overwrite_files: bool,

src/config.rs

@@ -13,7 +13,10 @@ use http::HeaderMap;
 #[cfg(feature = "tls")]
 use rustls_pemfile as pemfile;
 
-use crate::{args::CliArgs, auth::RequiredAuth};
+use crate::{
+    args::{CliArgs, MediaType},
+    auth::RequiredAuth,
+};
 
 /// Possible characters for random routes
 const ROUTE_ALPHABET: [char; 16] = [
@@ -81,6 +84,9 @@ pub struct MiniserveConfig {
     /// Enable file upload
     pub file_upload: bool,
 
+    /// HTML accept attribute value
+    pub uploadable_media_type: Option<String>,
+
     /// Enable upload to override existing files
     pub overwrite_files: bool,
 
@@ -188,6 +194,20 @@ impl MiniserveConfig {
         #[cfg(not(feature = "tls"))]
         let tls_rustls_server_config = None;
 
+        let uploadable_media_type = args.media_type_raw.or_else(|| {
+            args.media_type.map(|types| {
+                types
+                    .into_iter()
+                    .map(|t| match t {
+                        MediaType::Audio => "audio/*",
+                        MediaType::Image => "image/*",
+                        MediaType::Video => "video/*",
+                    })
+                    .collect::<Vec<_>>()
+                    .join(",")
+            })
+        });
+
         Ok(MiniserveConfig {
             verbose: args.verbose,
             path: args.path.unwrap_or_else(|| PathBuf::from(".")),
@@ -207,6 +227,7 @@ impl MiniserveConfig {
             overwrite_files: args.overwrite_files,
             show_qrcode: args.qrcode,
             file_upload: args.file_upload,
+            uploadable_media_type,
             tar_enabled: args.enable_tar,
             tar_gz_enabled: args.enable_tar_gz,
             zip_enabled: args.enable_zip,

src/renderer.rs

@@ -107,7 +107,10 @@ pub fn page(
                                 form id="file_submit" action=(upload_action) method="POST" enctype="multipart/form-data" {
                                     p { "Select a file to upload or drag it anywhere into the window" }
                                     div {
-                                        input #file-input type="file" name="file_to_upload" required="" multiple {}
+                                        @match &conf.uploadable_media_type {
+                                            Some(accept) => {input #file-input accept=(accept) type="file" name="file_to_upload" required="" multiple {}},
+                                            None => {input #file-input type="file" name="file_to_upload" required="" multiple {}}
+                                        }
                                         button type="submit" { "Upload file" }
                                     }
                                 }

tests/upload_files.rs

@@ -167,3 +167,23 @@ fn upload_to_symlink_directory(
 
     Ok(())
 }
+
+/// Test setting the HTML accept attribute using -m and -M.
+#[rstest]
+#[case(server(&["-u"]), None)]
+#[case(server(&["-u", "-m", "image"]), Some("image/*"))]
+#[case(server(&["-u", "-m", "image", "-m", "audio", "-m", "video"]), Some("image/*,audio/*,video/*"))]
+#[case(server(&["-u", "-m", "audio", "-m", "image", "-m", "video"]), Some("audio/*,image/*,video/*"))]
+#[case(server(&["-u", "-M", "test_value"]), Some("test_value"))]
+fn set_media_type(
+    #[case] server: TestServer,
+    #[case] expected_accept_value: Option<&str>,
+) -> Result<(), Error> {
+    let body = reqwest::blocking::get(server.url())?.error_for_status()?;
+    let parsed = Document::from_read(body)?;
+
+    let input = parsed.find(Attr("id", "file-input")).next().unwrap();
+    assert_eq!(input.attr("accept"), expected_accept_value);
+
+    Ok(())
+}