From b50102af01d07154b8bf59571596722684dc5183 Mon Sep 17 00:00:00 2001
From: Martin Ashby <martin@ashbysoft.com>
Date: Sat, 2 Mar 2024 21:45:34 +0000
Subject: More work on self-hosted server

---
 src/main.zig | 111 +++++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 100 insertions(+), 11 deletions(-)

(limited to 'src')

diff --git a/src/main.zig b/src/main.zig
index 96dafc9..f9f204b 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -18,29 +18,37 @@ const log = std.log.scoped(.server);
 //  - and maybe even cgit (although I might scrap it in favour of stagit if I can figure out archive downloads
 //  - do something about efficiency :) it's thread-per-request right now
 pub fn main() !void {
-    var gpa = std.heap.GeneralPurposeAllocator(.{
-        .thread_safe = true,
-    }){};
-    defer {
-        log.info("deinit gpa", .{});
-        _ = gpa.deinit();
-    }
+    var gpa = std.heap.GeneralPurposeAllocator(.{ .thread_safe = true }){};
+    defer _ = gpa.deinit();
     const a = gpa.allocator();
-
     var pool: std.Thread.Pool = undefined;
     try std.Thread.Pool.init(&pool, .{ .allocator = a, .n_jobs = 32 });
     defer pool.deinit();
-
     var svr = std.http.Server.init(.{ .reuse_address = true, .reuse_port = true });
-    const addr = try std.net.Address.parseIp("0.0.0.0", 8081);
+    defer svr.deinit();
+    const port = 8081;
+    const addr = std.net.Address.initIp4(.{0,0,0,0}, port);
     try svr.listen(addr);
     log.info("listening on {}", .{addr});
-    while (true) {
+    try acceptLoop(a, &svr, &pool, struct{
+        fn cancelled() bool {
+            return false;
+        }
+    });
+}
+
+fn acceptLoop(a: std.mem.Allocator, svr: *std.http.Server, pool: *std.Thread.Pool, cancel: anytype) !void {
+    while (!cancel.cancelled()) {
         // Create the Response into the heap so that the ownership goes to the handling thread
         const res = try a.create(std.http.Server.Response);
         errdefer a.destroy(res);
         res.* = try svr.accept(.{ .allocator = a });
         errdefer res.deinit();
+        if (cancel.cancelled()) {
+            res.deinit();
+            a.destroy(res);
+            break;
+        }
         try pool.spawn(handle, .{res});
     }
 }
@@ -201,6 +209,7 @@ fn serveStatic(res: *std.http.Server.Response, dirname: []const u8) !void {
     };
     var requested_path = uri.path;
     requested_path = try std.fs.path.join(res.allocator, &.{ dirpath, requested_path });
+    defer res.allocator.free(requested_path);
 
 
     const path = std.fs.realpathAlloc(res.allocator, requested_path) catch |e| {
@@ -340,3 +349,83 @@ fn sendError(res: *std.http.Server.Response, e: anyerror) !void {
         },
     }
 }
+
+const Fixture = struct {
+    a: std.mem.Allocator,
+    port: u16,
+    t: std.Thread,
+    cancel: std.atomic.Value(bool),
+    base_url: []const u8,
+    thread_pool: std.Thread.Pool,
+    server: std.http.Server,
+    client: std.http.Client,
+
+    fn init(a: std.mem.Allocator) !*Fixture {
+        var res: *Fixture = try a.create(Fixture);
+        errdefer a.destroy(res);
+        res.a = a;
+        try std.Thread.Pool.init(&res.thread_pool, .{ .allocator = a, .n_jobs = 32 });
+        errdefer res.thread_pool.deinit();
+        res.server = std.http.Server.init(.{ .reuse_address = true, .reuse_port = true });
+        errdefer res.server.deinit();
+        const addr = std.net.Address.initIp4(.{127,0,0,1}, 0);
+        try res.server.listen(addr);
+        res.port = res.server.socket.listen_address.in.getPort();
+        res.base_url = try std.fmt.allocPrint(a, "http://localhost:{}", .{res.port});
+        errdefer a.free(res.base_url);
+        res.cancel = std.atomic.Value(bool).init(false);
+        res.t = try std.Thread.spawn(.{}, acceptLoop, .{a, &res.server, &res.thread_pool, res});
+        res.client = .{.allocator = a};
+        return res;
+    }
+
+    fn deinit(self: *Fixture) void {
+        self.client.deinit();
+        self.a.free(self.base_url);
+        self.cancel.store(true, .Unordered);
+        // Trigger the server's accept() method to wake it up
+        if (std.net.tcpConnectToAddress(std.net.Address.initIp4(.{127,0,0,1}, self.port))) |stream| {
+            stream.close();
+        } else |_| {}
+        self.t.join();
+        self.thread_pool.deinit();
+        self.server.deinit();
+        self.a.destroy(self);
+    }
+
+    fn cancelled(self: *Fixture) bool {
+        return self.cancel.load(.Unordered);
+    }
+};
+
+
+test "static pages" {
+    const a = std.testing.allocator;
+    var f = try Fixture.init(a);
+    defer f.deinit();
+    const TestCase = struct {
+        path: []const u8,
+        file: []const u8,
+    };
+    const test_cases = [_]TestCase{
+        .{ .path = "/", .file = "public/index.html"},
+        .{ .path = "/posts/2018-05-31-new-site/", .file = "public/posts/2018-05-31-new-site/index.html"},
+    };
+
+    for (test_cases) |test_case| {
+        const url = try std.fmt.allocPrint(a, "{s}{s}", .{f.base_url, test_case.path});
+        defer a.free(url);
+        var fr = try f.client.fetch(a, .{
+            .location = .{.url = url}
+            });
+        defer fr.deinit();
+        try std.testing.expectEqual(std.http.Status.ok, fr.status);
+        const expected = try std.fs.cwd().readFileAlloc(a, test_case.file, 1_000_000);
+        defer a.free(expected);
+        try std.testing.expectEqualStrings(expected, fr.body.?);
+    }
+}
+
+// test "404" {
+
+// }
\ No newline at end of file
-- 
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