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<a href="#211" id="211">211</a></pre></div><pre class="rust"><code><span class="kw">use </span>std::env;
<span class="kw">use </span>std::io::Read;
<span class="kw">use </span>std::sync::Arc;
<span class="kw">use </span>clap::Parser;
<span class="kw">use </span>native_tls::{Identity, TlsAcceptor <span class="kw">as </span>NativeTlsAcceptor};
<span class="kw">use </span>serde_json::json;
<span class="kw">use </span>tokio::io::{AsyncReadExt, AsyncWriteExt};
<span class="kw">use </span>tokio_native_tls::TlsAcceptor;
<span class="kw">use </span>tracing::{debug, error, info};
<span class="kw">use </span>mrc::{get_property, playlist_clear, playlist_next, playlist_prev, quit, seek, set_property};
<span class="attr">#[derive(Parser)]
#[command(author, version, about)]
</span><span class="kw">struct </span>Config {
<span class="doccomment">/// The IP address and port to bind the server to
</span><span class="attr">#[arg(short, long, default_value = <span class="string">"127.0.0.1:8080"</span>)]
</span>bind: String,
<span class="doccomment">/// Path to MPV IPC socket
</span><span class="attr">#[arg(short, long, default_value = <span class="string">"/tmp/mpvsocket"</span>)]
</span>socket: String,
}
<span class="kw">async fn </span>handle_connection(
stream: tokio::net::TcpStream,
acceptor: Arc&lt;TlsAcceptor&gt;,
) -&gt; <span class="prelude-ty">Result</span>&lt;(), Box&lt;<span class="kw">dyn </span>std::error::Error + Send + Sync&gt;&gt; {
<span class="kw">let </span><span class="kw-2">mut </span>stream = acceptor.accept(stream).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span><span class="kw-2">mut </span>buffer = <span class="macro">vec!</span>[<span class="number">0</span>; <span class="number">2048</span>];
<span class="kw">let </span>n = stream.read(<span class="kw-2">&amp;mut </span>buffer).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>request = String::from_utf8_lossy(<span class="kw-2">&amp;</span>buffer[..n]);
<span class="macro">debug!</span>(<span class="string">"Received request:\n{}"</span>, request);
<span class="kw">let </span>headers = request.split(<span class="string">"\r\n"</span>).collect::&lt;Vec&lt;<span class="kw-2">&amp;</span>str&gt;&gt;();
<span class="kw">let </span>token_line = headers
.iter()
.find(|&amp;&amp;line| line.starts_with(<span class="string">"Authorization:"</span>));
<span class="kw">let </span>token = <span class="kw">match </span>token_line {
<span class="prelude-val">Some</span>(line) =&gt; line.split(<span class="string">" "</span>).nth(<span class="number">1</span>).unwrap_or_default(),
<span class="prelude-val">None </span>=&gt; <span class="string">""</span>,
};
<span class="kw">let </span>auth_token = <span class="kw">match </span>env::var(<span class="string">"AUTH_TOKEN"</span>) {
<span class="prelude-val">Ok</span>(token) =&gt; token,
<span class="prelude-val">Err</span>(<span class="kw">_</span>) =&gt; {
<span class="macro">error!</span>(<span class="string">"Authentication token is not set. Connection cannot be accepted."</span>);
stream.write_all(<span class="string">b"Authentication token not set\n"</span>).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="comment">// You know what? I do not care to panic when the authentication token is
// missing in the environment. Start the goddamned server and hell, even
// accept incoming connections. Authenticated requests will be refused
// when the token is incorrect or not set, so we can simply continue here.
</span><span class="kw">return </span><span class="prelude-val">Ok</span>(());
}
};
<span class="kw">if </span>token != auth_token {
stream.write_all(<span class="string">b"Authentication failed\n"</span>).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">return </span><span class="prelude-val">Ok</span>(());
}
<span class="macro">info!</span>(<span class="string">"Client authenticated"</span>);
stream.write_all(<span class="string">b"Authenticated\n"</span>).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="kw">let </span>command = request.split(<span class="string">"\r\n\r\n"</span>).last().unwrap_or(<span class="string">""</span>);
<span class="macro">info!</span>(<span class="string">"Received command: {}"</span>, command);
<span class="kw">let </span>response = <span class="kw">match </span>process_command(command.trim()).<span class="kw">await </span>{
<span class="prelude-val">Ok</span>(response) =&gt; response,
<span class="prelude-val">Err</span>(e) =&gt; {
<span class="macro">error!</span>(<span class="string">"Error processing command: {}"</span>, e);
<span class="macro">format!</span>(<span class="string">"Error: {:?}"</span>, e)
}
};
stream.write_all(response.as_bytes()).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(())
}
<span class="kw">async fn </span>process_command(command: <span class="kw-2">&amp;</span>str) -&gt; <span class="prelude-ty">Result</span>&lt;String, String&gt; {
<span class="kw">match </span>command {
<span class="string">"pause" </span>=&gt; {
<span class="macro">info!</span>(<span class="string">"Pausing playback"</span>);
set_property(<span class="string">"pause"</span>, <span class="kw-2">&amp;</span><span class="macro">json!</span>(<span class="bool-val">true</span>), <span class="prelude-val">None</span>)
.<span class="kw">await
</span>.map_err(|e| <span class="macro">format!</span>(<span class="string">"Failed to pause: {:?}"</span>, e))<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="string">"Paused playback\n"</span>.to_string())
}
<span class="string">"play" </span>=&gt; {
<span class="macro">info!</span>(<span class="string">"Unpausing playback"</span>);
set_property(<span class="string">"pause"</span>, <span class="kw-2">&amp;</span><span class="macro">json!</span>(<span class="bool-val">false</span>), <span class="prelude-val">None</span>)
.<span class="kw">await
</span>.map_err(|e| <span class="macro">format!</span>(<span class="string">"Failed to play: {:?}"</span>, e))<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="string">"Resumed playback\n"</span>.to_string())
}
<span class="string">"stop" </span>=&gt; {
<span class="macro">info!</span>(<span class="string">"Stopping playback and quitting MPV"</span>);
quit(<span class="prelude-val">None</span>)
.<span class="kw">await
</span>.map_err(|e| <span class="macro">format!</span>(<span class="string">"Failed to stop: {:?}"</span>, e))<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="string">"Stopped playback\n"</span>.to_string())
}
<span class="string">"next" </span>=&gt; {
<span class="macro">info!</span>(<span class="string">"Skipping to next item in the playlist"</span>);
playlist_next(<span class="prelude-val">None</span>)
.<span class="kw">await
</span>.map_err(|e| <span class="macro">format!</span>(<span class="string">"Failed to skip to next: {:?}"</span>, e))<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="string">"Skipped to next item\n"</span>.to_string())
}
<span class="string">"prev" </span>=&gt; {
<span class="macro">info!</span>(<span class="string">"Skipping to previous item in the playlist"</span>);
playlist_prev(<span class="prelude-val">None</span>)
.<span class="kw">await
</span>.map_err(|e| <span class="macro">format!</span>(<span class="string">"Failed to skip to previous: {:?}"</span>, e))<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="string">"Skipped to previous item\n"</span>.to_string())
}
<span class="string">"seek" </span>=&gt; {
<span class="kw">let </span>parts: Vec&lt;<span class="kw-2">&amp;</span>str&gt; = command.split_whitespace().collect();
<span class="kw">if let </span><span class="prelude-val">Some</span>(seconds) = parts.get(<span class="number">1</span>) {
<span class="kw">if let </span><span class="prelude-val">Ok</span>(sec) = seconds.parse::&lt;i32&gt;() {
<span class="macro">info!</span>(<span class="string">"Seeking to {} seconds"</span>, sec);
seek(sec.into(), <span class="prelude-val">None</span>)
.<span class="kw">await
</span>.map_err(|e| <span class="macro">format!</span>(<span class="string">"Failed to seek: {:?}"</span>, e))<span class="question-mark">?</span>;
<span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="macro">format!</span>(<span class="string">"Seeking to {} seconds\n"</span>, sec));
}
}
<span class="prelude-val">Err</span>(<span class="string">"Invalid seek command"</span>.to_string())
}
<span class="string">"clear" </span>=&gt; {
<span class="macro">info!</span>(<span class="string">"Clearing the playlist"</span>);
playlist_clear(<span class="prelude-val">None</span>)
.<span class="kw">await
</span>.map_err(|e| <span class="macro">format!</span>(<span class="string">"Failed to clear playlist: {:?}"</span>, e))<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="string">"Cleared playlist\n"</span>.to_string())
}
<span class="string">"list" </span>=&gt; {
<span class="macro">info!</span>(<span class="string">"Listing playlist items"</span>);
<span class="kw">match </span>get_property(<span class="string">"playlist"</span>, <span class="prelude-val">None</span>).<span class="kw">await </span>{
<span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(data)) =&gt; <span class="prelude-val">Ok</span>(<span class="macro">format!</span>(
<span class="string">"Playlist: {}"</span>,
serde_json::to_string_pretty(<span class="kw-2">&amp;</span>data).unwrap()
)),
<span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>) =&gt; <span class="prelude-val">Err</span>(<span class="string">"No playlist data available"</span>.to_string()),
<span class="prelude-val">Err</span>(e) =&gt; <span class="prelude-val">Err</span>(<span class="macro">format!</span>(<span class="string">"Failed to fetch playlist: {:?}"</span>, e)),
}
}
<span class="kw">_ </span>=&gt; <span class="prelude-val">Err</span>(<span class="string">"Unknown command"</span>.to_string()),
}
}
<span class="kw">fn </span>create_tls_acceptor() -&gt; <span class="prelude-ty">Result</span>&lt;TlsAcceptor, Box&lt;<span class="kw">dyn </span>std::error::Error + Send + Sync&gt;&gt; {
<span class="kw">let </span>pfx_path = env::var(<span class="string">"TLS_PFX_PATH"</span>)
.map_err(|<span class="kw">_</span>| std::io::Error::new(std::io::ErrorKind::NotFound, <span class="string">"TLS_PFX_PATH not set"</span>))<span class="question-mark">?</span>;
<span class="kw">let </span>password = env::var(<span class="string">"TLS_PASSWORD"</span>)
.map_err(|<span class="kw">_</span>| std::io::Error::new(std::io::ErrorKind::NotFound, <span class="string">"TLS_PASSWORD not set"</span>))<span class="question-mark">?</span>;
<span class="kw">let </span><span class="kw-2">mut </span>file = std::fs::File::open(<span class="kw-2">&amp;</span>pfx_path)<span class="question-mark">?</span>;
<span class="kw">let </span><span class="kw-2">mut </span>identity = <span class="macro">vec!</span>[];
file.read_to_end(<span class="kw-2">&amp;mut </span>identity)<span class="question-mark">?</span>;
<span class="kw">let </span>identity = Identity::from_pkcs12(<span class="kw-2">&amp;</span>identity, <span class="kw-2">&amp;</span>password)<span class="question-mark">?</span>;
<span class="kw">let </span>native_acceptor = NativeTlsAcceptor::new(identity)<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(TlsAcceptor::from(native_acceptor))
}
<span class="attr">#[tokio::main]
</span><span class="kw">async fn </span>main() -&gt; <span class="prelude-ty">Result</span>&lt;(), Box&lt;<span class="kw">dyn </span>std::error::Error + Send + Sync&gt;&gt; {
tracing_subscriber::fmt::init();
<span class="kw">let </span>config = Config::parse();
<span class="kw">if </span>!std::path::Path::new(<span class="kw-2">&amp;</span>config.socket).exists() {
<span class="macro">error!</span>(
<span class="string">"Error: MPV socket not found at '{}'. Is MPV running?"</span>,
config.socket
);
}
<span class="macro">info!</span>(<span class="string">"Server is starting..."</span>);
<span class="kw">match </span>create_tls_acceptor() {
<span class="prelude-val">Ok</span>(acceptor) =&gt; {
<span class="kw">let </span>acceptor = Arc::new(acceptor);
<span class="kw">let </span>listener = tokio::net::TcpListener::bind(<span class="kw-2">&amp;</span>config.bind).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="macro">info!</span>(<span class="string">"Server is listening on {}"</span>, config.bind);
<span class="kw">loop </span>{
<span class="kw">let </span>(stream, <span class="kw">_</span>) = listener.accept().<span class="kw">await</span><span class="question-mark">?</span>;
<span class="macro">info!</span>(<span class="string">"New connection accepted."</span>);
<span class="kw">let </span>acceptor = Arc::clone(<span class="kw-2">&amp;</span>acceptor);
tokio::spawn(handle_connection(stream, acceptor));
}
}
<span class="prelude-val">Err</span>(e) =&gt; {
<span class="macro">error!</span>(<span class="string">"Failed to initialize TLS: {}"</span>, e);
<span class="kw">return </span><span class="prelude-val">Err</span>(e);
}
}
}
</code></pre></div></section></main></body></html>