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const std = @import("std");
// extremely basic http file server
pub fn main() !void {
var allocator = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = allocator.deinit();
const alloc = allocator.allocator();
var svr = std.http.Server.init(alloc, .{.reuse_address = true});
defer svr.deinit();
const addr = try std.net.Address.resolveIp("127.0.0.1", 8080);
try svr.listen(addr);
while (true) {
var res = try svr.accept(.{.allocator = alloc });
defer res.deinit();
try res.wait();
const target = res.request.target;
const path = try std.fs.path.join(alloc, &[_][]const u8{".", target});
defer alloc.free(path);
if (std.fs.cwd().openFile(path, .{})) |file| {
const md = try file.metadata();
if (md.kind() == .directory) {
const index_path = try std.fs.path.join(alloc, &[_][]const u8{path, "index.html"});
defer alloc.free(index_path);
if (std.fs.cwd().openFile(index_path, .{})) |index_file| {
const index_md = try index_file.metadata();
try serve_file(&res, index_file, index_md);
} else |_| {
try serve_error(&res, .not_found);
}
} else {
try serve_file(&res, file, md);
}
} else |err| {
switch (err) {
error.FileNotFound => try serve_error(&res, .not_found),
else => try serve_error(&res, .bad_request),
}
}
try res.finish();
}
}
fn serve_file(res: *std.http.Server.Response, file: std.fs.File, md: std.fs.File.Metadata) !void {
res.transfer_encoding = .{ .content_length = md.size() };
try res.do();
var buf = [_]u8{0} ** 1024;
while (true) {
const read = try file.read(&buf);
if (read == 0) break;
_ = try res.write(buf[0..read]);
}
}
fn serve_error(res: *std.http.Server.Response, status: std.http.Status) !void {
res.status = status;
res.transfer_encoding = .chunked;
try res.do();
const phrase = status.phrase() orelse "error!";
try std.fmt.format(res.writer(),
\\ <!doctype html><html><body>{s}</body></html>
, .{phrase});
}
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