1 files changed, 104 insertions, 0 deletions
diff --git a/req.ha b/req.ha
new file mode 100644
index 0000000..59f6438
--- /dev/null
+++ b/req.ha
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: AGPL-3.0-only
+// SPDX-FileCopyrightText: Copyright (c) 2025 Runxi Yu <https://runxiyu.org>
+
+use fmt;
+use fs;
+use htmpl;
+use io;
+use mime;
+use net::http;
+use net::uri;
+use strconv;
+use strings;
+
+fn handlereq(conn: io::handle, request: *http::request) (void | io::error | nomem | fs::error) = {
+	let segments = match(segments_from_path(request.target.raw_path)) {
+	case let s: []str =>
+		yield s;
+	case uri::invalid =>
+		start_response(conn, 400, "text/plain")?;
+		fmt::fprintln(conn, "Invalid URI")?;
+		return void;
+	case nomem =>
+		return nomem;
+	case =>
+		abort("unreachable");
+	};
+	defer strings::freeall(segments);
+
+	let trailing_slash: bool = false;
+
+	if (segments[len(segments) - 1] == "") {
+		trailing_slash = true;
+		free(segments[len(segments) - 1]);
+		segments = segments[.. len(segments) - 1];
+	};
+
+	if (len(segments) == 0) {
+		start_response(conn, 200, "text/html")?;
+		return tp_index(conn);
+	};
+	
+	if (segments[0] == ":") {
+		if (len(segments) == 1) {
+			start_response(conn, 404, "text/plain")?;
+			fmt::fprintln(conn, "Error: Blank system endpoint")?;
+			return;
+		};
+
+		switch (segments[1]) {
+		case "static" =>
+			if (len(segments) == 2) {
+				start_response(conn, 404, "text/plain")?;
+				fmt::fprintln(conn, "Error: Blank static endpoint")?;
+				return;
+			};
+
+			let fs_segments = segments[2 ..];
+			for (let fs_segment .. fs_segments) {
+				if (strings::contains(fs_segment, "/")) {
+					start_response(conn, 400, "text/plain")?;
+					fmt::fprintln(conn, "Error: Slash found in filesystem path")?;
+					return;
+				};
+			};
+			let fs_segment_path = strings::join("/", fs_segments...)?;
+			defer free(fs_segment_path);
+
+			let file = match (fs::open(static_fs as *fs::fs, fs_segment_path)) {
+			case let f: io::handle => yield f;
+			case fs::error =>
+				start_response(conn, 500, "text/plain")?;
+				fmt::fprintln(conn, "Filesystem error")?;
+				return;
+			};
+			defer io::close(file)!;
+
+			let ext = strings::rcut(fs_segments[len(fs_segments) - 1], ".").1;
+
+			let mimetype = match (mime::lookup_ext(ext)) {
+			case let m: *mime::mimetype => yield m.mime;
+			case null => yield "application/octet-stream";
+			};
+
+			start_response(conn, 200, mimetype)?;
+			io::copy(conn, file)?;
+
+		case =>
+			start_response(conn, 404, "text/plain")?;
+			fmt::fprintln(conn, "Error: Unknown system endpoint")?;
+		};
+	};
+};
+
+fn start_response(conn: io::handle, status: uint, content_type: str) (void | io::error | nomem) = { // TODO: add len and other headers
+	fmt::fprint(conn, "HTTP/1.1 ")?;
+	fmt::fprint(conn, strconv::utos(status))?;
+	fmt::fprint(conn, " ")?;
+	fmt::fprint(conn, http::status_reason(status))?;
+	fmt::fprint(conn, "\r\n")?;
+	fmt::fprint(conn, "Content-Type: ")?;
+	fmt::fprint(conn, content_type)?;
+	fmt::fprint(conn, "\r\n")?;
+	fmt::fprint(conn, "\r\n")?;
+};