]> gitweb.ps.run Git - chirp/blobdiff - src/main.zig
projects / chirp / blobdiff
? search:
summary | shortlog | log | commit | commitdiff | tree
raw | inline | side by side
changessssss
[chirp] / src / main.zig
diff --git a/src/main.zig b/src/main.zig
index eeada2b20562ae4805d1cf201465d3ba80ecba5a..6647619af293cb5d2f265db6bac6da0baee5ffd5 100644 (file)
--- a/src/main.zig
+++ b/src/main.zig
@@ -1,66 +1,54 @@
 const std = @import("std");
 const lmdb = @import("lmdb");
 const std = @import("std");
 const lmdb = @import("lmdb");
+const http = @import("http.zig");
 
 // db {{{
 
 const Prng = struct {
 
 // db {{{
 
 const Prng = struct {
-    prng: std.Random.DefaultPrng = std.Random.DefaultPrng.init(0),
+    var prng: std.Random.DefaultPrng = std.Random.DefaultPrng.init(0);
 
 
-    pub fn gen_id(self: *Prng, dbi: anytype) Id {
-        var id = self.prng.next();
+    pub fn gen_id(dbi: anytype) Id {
+        var id = Prng.prng.next();
 
         while (dbi.has(id)) {
 
         while (dbi.has(id)) {
-            id = self.prng.next();
+            id = Prng.prng.next();
         }
 
         return id;
     }
         }
 
         return id;
     }
-};
-var prng = Prng{};
-
-// }}}
-
-// http stuff {{{
-
-pub fn redirect(req: *std.http.Server.Request, location: []const u8) !void {
-    try req.respond("", .{ .status = .see_other, .extra_headers = &.{.{ .name = "Location", .value = location }} });
-}
 
 
-pub fn get_body(req: *std.http.Server.Request) []const u8 {
-    return req.server.read_buffer[req.head_end .. req.head_end + (req.head.content_length orelse 0)];
-}
+    pub fn gen_str(dbi: anytype, comptime len: usize) [len]u8 {
+        var buf: [len / 2]u8 = undefined;
+        var res: [len]u8 = undefined;
+        Prng.prng.fill(&buf);
+        for (0..len / 2) |i| {
+            res[i * 2 + 0] = 'a' + (buf[i] % 16);
+            res[i * 2 + 1] = 'a' + (buf[i] >> 4 % 16);
+        }
 
 
-pub fn get_value(req: *std.http.Server.Request, name: []const u8) ?[]const u8 {
-    const body = get_body(req);
-    if (std.mem.indexOf(u8, body, name)) |name_index| {
-        if (std.mem.indexOfScalarPos(u8, body, name_index, '=')) |eql_index| {
-            if (std.mem.indexOfScalarPos(u8, body, name_index, '&')) |amp_index| {
-                return body[eql_index + 1 .. amp_index];
+        while (dbi.has(res)) {
+            Prng.prng.fill(&buf);
+            for (0..len / 2) |i| {
+                res[i * 2 + 0] = 'a' + (buf[i] % 16);
+                res[i * 2 + 1] = 'a' + (buf[i] >> 4 % 16);
             }
             }
-
-            return body[eql_index + 1 .. body.len];
         }
         }
-    }
-    return null;
-}
 
 
-pub fn get_cookie(req: *std.http.Server.Request, name: []const u8) ?CookieValue {
-    var header_it = req.iterateHeaders();
-    while (header_it.next()) |header| {
-        if (std.mem.eql(u8, header.name, "Cookie")) {
-            if (std.mem.indexOf(u8, header.value, name)) |name_index| {
-                if (std.mem.indexOfScalarPos(u8, header.value, name_index, '=')) |eql_index| {
-                    if (std.mem.indexOfPos(u8, header.value, name_index, "; ")) |semi_index| {
-                        return CookieValue.fromSlice(header.value[eql_index + 1 .. semi_index]) catch null;
-                    }
+        return res;
+    }
+};
 
 
-                    return CookieValue.fromSlice(header.value[eql_index + 1 .. header.value.len]) catch null;
-                }
-            }
-        }
+const Db = struct {
+    fn users(txn: *const lmdb.Txn) !lmdb.Dbi(Id, User) {
+        return try txn.dbi("users", Id, User);
     }
     }
-    return null;
-}
+    fn user_ids(txn: *const lmdb.Txn) !lmdb.Dbi(Username, Id) {
+        return try txn.dbi("user_ids", Username, Id);
+    }
+    fn sessions(txn: *const lmdb.Txn) !lmdb.Dbi(SessionToken, Id) {
+        return try txn.dbi("sessions", SessionToken, Id);
+    }
+};
 
 // }}}
 
 
 // }}}
 
@@ -72,10 +60,12 @@ const User = struct {
     password_hash: PasswordHash,
 };
 
     password_hash: PasswordHash,
 };
 
+const SessionTokenLen = 16;
+
 const Id = u64;
 const Username = std.BoundedArray(u8, 16);
 const PasswordHash = std.BoundedArray(u8, 128);
 const Id = u64;
 const Username = std.BoundedArray(u8, 16);
 const PasswordHash = std.BoundedArray(u8, 128);
-const SessionToken = u64;
+const SessionToken = [SessionTokenLen]u8;
 const CookieValue = std.BoundedArray(u8, 128);
 
 pub fn hash_password(password: []const u8) !PasswordHash {
 const CookieValue = std.BoundedArray(u8, 128);
 
 pub fn hash_password(password: []const u8) !PasswordHash {
@@ -111,255 +101,311 @@ pub fn verify_password(password: []const u8, hash: PasswordHash) bool {
     }
 }
 
     }
 }
 
-pub fn register_user(env: *lmdb.Env, username: []const u8, password: []const u8) !void {
+pub fn register_user(env: *lmdb.Env, username: []const u8, password: []const u8) !bool {
     const username_array = try Username.fromSlice(username);
 
     const username_array = try Username.fromSlice(username);
 
-    var user_id: Id = undefined;
-
-    if (env.txn()) |*txn| {
-        defer txn.commit();
-        if (txn.dbi("users", Id, User)) |users| {
-            user_id = prng.gen_id(users);
-            users.put(user_id, User{
-                .username = username_array,
-                .password_hash = try hash_password(password),
-            });
-        }
+    const txn = try env.txn();
+    defer {
+        txn.commit();
+        env.sync();
     }
 
     }
 
-    if (env.txn()) |txn| {
-        defer txn.commit();
-        if (txn.dbi("user_ids", @TypeOf(username_array.buffer), Id)) |user_ids| {
-            user_ids.put(username_array.buffer, user_id);
-        }
-    }
+    const users = try Db.users(&txn);
+    const user_ids = try Db.user_ids(&txn);
 
 
-    env.sync();
-}
+    if (user_ids.has(username_array)) {
+        return false;
+    } else {
+        const user_id = Prng.gen_id(users);
+        users.put(user_id, User{
+            .username = username_array,
+            .password_hash = try hash_password(password),
+        });
 
 
-pub fn login_user(env: *lmdb.Env, username: []const u8, password: []const u8) ?SessionToken {
-    const username_array = Username.fromSlice(username) catch return null;
+        user_ids.put(username_array, user_id);
 
 
-    var user_id_maybe: ?Id = null;
-    var user_maybe: ?User = null;
+        return true;
+    }
+}
 
 
-    if (env.txn()) |txn| {
-        defer txn.abort();
-        if (txn.dbi("user_ids", @TypeOf(username_array.buffer), Id)) |user_ids| {
-            user_id_maybe = user_ids.get(username_array.buffer);
-            std.debug.print("id: {?}\n", .{user_id_maybe});
-        }
+pub fn login_user(env: *lmdb.Env, username: []const u8, password: []const u8) !SessionToken {
+    const username_array = try Username.fromSlice(username);
+
+    const txn = try env.txn();
+    defer {
+        txn.commit();
+        env.sync();
     }
 
     }
 
-    if (user_id_maybe) |user_id| {
-        if (env.txn()) |txn| {
-            defer txn.abort();
-            if (txn.dbi("users", Id, User)) |users| {
-                user_maybe = users.get(user_id_maybe.?);
-            }
+    const user_ids = try Db.user_ids(&txn);
+    const user_id = user_ids.get(username_array) orelse return error.UnknownUsername;
+    std.debug.print("id: {}\n", .{user_id});
+
+    const users = try Db.users(&txn);
+    if (users.get(user_id)) |user| {
+        if (verify_password(password, user.password_hash)) {
+            const sessions = try Db.sessions(&txn);
+            const session_token = Prng.gen_str(sessions, SessionTokenLen);
+            sessions.put(session_token, user_id);
+            return session_token;
+        } else {
+            return error.IncorrectPassword;
         }
         }
+    } else {
+        return error.UserNotFound;
+    }
+}
 
 
-        if (user_maybe) |user| {
-            if (verify_password(password, user.password_hash)) {
-                if (env.txn()) |txn| {
-                    defer txn.commit();
-                    if (txn.dbi("sessions", Id, Id)) |sessions| {
-                        const session_token = prng.gen_id(sessions);
-                        sessions.put(session_token, user_id);
-                        return session_token;
-                    }
-                }
-            }
-        }
+fn logout_user(env: *lmdb.Env, session_token: SessionToken) !void {
+    const txn = try env.txn();
+    defer {
+        txn.commit();
+        env.sync();
     }
 
     }
 
-    return null;
+    const sessions = try Db.sessions(&txn);
+    sessions.del(session_token);
 }
 
 }
 
-fn logout_user(env: *lmdb.Env, session_token: SessionToken) void {
-    if (env.txn()) |txn| {
-        defer txn.commit();
-        if (txn.dbi("sessions", Id, Id)) |sessions| {
-            sessions.del(session_token);
-        }
+fn get_session_user(env: *lmdb.Env, session_token: SessionToken) !User {
+    const txn = try env.txn();
+    defer txn.abort();
+
+    const sessions = try Db.sessions(&txn);
+    const users = try Db.users(&txn);
+
+    if (sessions.get(session_token)) |user_id| {
+        return users.get(user_id) orelse error.UnknownUser;
+    } else {
+        return error.SessionNotFound;
     }
 }
 
     }
 }
 
-fn get_session_user(env: *lmdb.Env, session_token: SessionToken) ?User {
-    var user_id_maybe: ?Id = null;
+// }}}
 
 
-    if (env.txn()) |txn| {
-        defer txn.abort();
-        if (txn.dbi("sessions", Id, Id)) |sessions| {
-            user_id_maybe = sessions.get(session_token);
-        }
-    }
+fn list_users(env: *lmdb.Env) !void {
+    const txn = try env.txn();
+    defer txn.abort();
 
 
-    if (user_id_maybe) |user_id| {
-        if (env.txn()) |txn| {
-            defer txn.abort();
-            if (txn.dbi("users", Id, User)) |users| {
-                return users.get(user_id);
-            }
-        }
+    // const users = try Db.users(&txn);
+    const users = try txn.dbi("users", Id, User);
+    var cursor = try users.cursor();
+
+    var key: Id = undefined;
+    var user_maybe = cursor.get(&key, .First);
+
+    while (user_maybe) |*user| {
+        std.debug.print("[{}] {s}\n", .{ key, user.username.constSlice() });
+
+        user_maybe = cursor.get(&key, .Next);
     }
     }
+}
+fn list_user_ids(env: *lmdb.Env) !void {
+    const txn = try env.txn();
+    defer txn.abort();
+
+    const user_ids = try Db.user_ids(&txn);
+    var cursor = try user_ids.cursor();
+
+    var key: Username = undefined;
+    var user_id_maybe = cursor.get(&key, .First);
+
+    while (user_id_maybe) |user_id| {
+        std.debug.print("[{s}] {}\n", .{ key.constSlice(), user_id });
 
 
-    return null;
+        user_id_maybe = cursor.get(&key, .Next);
+    }
 }
 
 }
 
-// }}}
+fn list_sessions(env: *lmdb.Env) !void {
+    const txn = try env.txn();
+    defer txn.abort();
 
 
-fn list_users(env: *lmdb.Env) void {
-    if (env.txn()) |txn| {
-        defer txn.abort();
-        if (txn.dbi("users", Id, User)) |users| {
-            var cursor = users.cursor();
+    const sessions = try Db.sessions(&txn);
+    var cursor = try sessions.cursor();
 
 
-            var key: Id = undefined;
-            var user_maybe = cursor.get(&key, .First);
+    var key: SessionToken = undefined;
+    var user_id_maybe = cursor.get(&key, .First);
 
 
-            while (user_maybe) |user| {
-                std.debug.print("[{}] {s}\n", .{ key, user.username.constSlice() });
+    while (user_id_maybe) |user_id| {
+        std.debug.print("[{s}] {}\n", .{ key, user_id });
 
 
-                user_maybe = cursor.get(&key, .Next);
-            }
-        }
+        user_id_maybe = cursor.get(&key, .Next);
     }
 }
 
     }
 }
 
+const ReqBufferSize = 4096;
+const ResHeadBufferSize = 4096;
+const ResBodyBufferSize = 4096;
+
 pub fn main() !void {
     // server
 pub fn main() !void {
     // server
-    const address = try std.net.Address.resolveIp("::", 8080);
-
-    var server = try address.listen(.{
-        .reuse_address = true,
-    });
+    var server = try http.Server.init("::", 8080);
     defer server.deinit();
 
     // lmdb
     defer server.deinit();
 
     // lmdb
-    var env = lmdb.Env.open("db", 1024 * 1024 * 10);
+    var env = lmdb.Env.open("db", 1024 * 100);
     defer env.close();
 
     defer env.close();
 
-    list_users(&env);
-
-    accept: while (true) {
-        const conn = try server.accept();
+    std.debug.print("Users:\n", .{});
+    try list_users(&env);
+    std.debug.print("User IDs:\n", .{});
+    try list_user_ids(&env);
+    std.debug.print("Sessions:\n", .{});
+    try list_sessions(&env);
+
+    try handle_connection(&server, &env);
+    // const ThreadCount = 1;
+    // var ts: [ThreadCount]std.Thread = undefined;
+
+    // for (0..ThreadCount) |i| {
+    //     ts[i] = try std.Thread.spawn(.{}, handle_connection, .{ &server, &env });
+    // }
+    // for (0..ThreadCount) |i| {
+    //     ts[i].join();
+    // }
+
+    std.debug.print("done\n", .{});
+}
 
 
-        std.debug.print("new connection: {}\n", .{conn});
+fn handle_connection(server: *http.Server, env: *lmdb.Env) !void {
+    // TODO: static?
+    var req_buffer: [ReqBufferSize]u8 = undefined;
+    var res_head_buffer: [ResHeadBufferSize]u8 = undefined;
+    var res_body_buffer: [ResBodyBufferSize]u8 = undefined;
 
 
-        var read_buffer: [1024]u8 = undefined;
-        var http_server = std.http.Server.init(conn, &read_buffer);
+    accept: while (true) {
+        server.wait();
 
 
-        while (http_server.state == .ready) {
-            var req = http_server.receiveHead() catch continue;
+        while (try server.next_request(&req_buffer)) |req| {
+            // std.debug.print("[{}]: {s}\n", .{ req.method, req.target });
 
 
-            std.debug.print("[{}]: {s}\n", .{ req.head.method, req.head.target });
+            // reponse
+            var res = http.Response.init(req.fd, &res_head_buffer, &res_body_buffer);
 
 
+            // check session token
             var logged_in: ?struct {
                 user: User,
                 session_token: SessionToken,
             } = null;
 
             var logged_in: ?struct {
                 user: User,
                 session_token: SessionToken,
             } = null;
 
-            if (get_cookie(&req, "session_token")) |session_token_str| {
-                const session_token = try std.fmt.parseUnsigned(SessionToken, session_token_str.constSlice(), 10);
-                if (get_session_user(&env, session_token)) |user| {
+            if (req.get_cookie("session_token")) |session_token_str| {
+                var session_token: SessionToken = undefined;
+                std.mem.copyForwards(u8, &session_token, session_token_str);
+                // const session_token = try std.fmt.parseUnsigned(SessionToken, session_token_str, 10);
+                // const session_token = std.mem.bytesToValue(SessionToken, session_token_str);
+                if (get_session_user(env, session_token)) |user| {
                     logged_in = .{
                         .user = user,
                         .session_token = session_token,
                     };
                     logged_in = .{
                         .user = user,
                         .session_token = session_token,
                     };
+                } else |err| {
+                    std.debug.print("get_session_user err: {}\n", .{err});
+
+                    try res.add_header(
+                        "Set-Cookie",
+                        .{"session_token=deleted; Expires=Thu, 01 Jan 1970 00:00:00 GMT"},
+                    );
                 }
                 }
-                // TODO: delete session token
-                // TODO: add changeable headers (set, delete cookies)
             }
 
             // html
             }
 
             // html
-            if (req.head.method == .GET) {
-                if (std.mem.eql(u8, req.head.target, "/register")) {
-                    try req.respond(
+            if (req.method == .GET) {
+                if (std.mem.eql(u8, req.target, "/register")) {
+                    try res.write(
                         \\<form action="/register" method="post">
                         \\<input type="text" name="username" />
                         \\<input type="password" name="password" />
                         \\<input type="submit" value="Register" />
                         \\</form>
                     , .{});
                         \\<form action="/register" method="post">
                         \\<input type="text" name="username" />
                         \\<input type="password" name="password" />
                         \\<input type="submit" value="Register" />
                         \\</form>
                     , .{});
-                } else if (std.mem.eql(u8, req.head.target, "/login")) {
-                    try req.respond(
+                    try res.send();
+                } else if (std.mem.eql(u8, req.target, "/login")) {
+                    try res.write(
                         \\<form action="/login" method="post">
                         \\<input type="text" name="username" />
                         \\<input type="password" name="password" />
                         \\<input type="submit" value="Login" />
                         \\</form>
                     , .{});
                         \\<form action="/login" method="post">
                         \\<input type="text" name="username" />
                         \\<input type="password" name="password" />
                         \\<input type="submit" value="Login" />
                         \\</form>
                     , .{});
+                    try res.send();
                 } else {
                     if (logged_in) |login| {
                 } else {
                     if (logged_in) |login| {
-                        var response_buffer = try std.BoundedArray(u8, 1024).init(0);
-                        try std.fmt.format(response_buffer.writer(),
+                        try res.write(
                             \\<a href="/user/{s}">Home</a>
                             \\<form action="/logout" method="post"><input type="submit" value="Logout" /></form>
                             \\<form action="/quit" method="post"><input type="submit" value="Quit" /></form>
                         , .{login.user.username.constSlice()});
                             \\<a href="/user/{s}">Home</a>
                             \\<form action="/logout" method="post"><input type="submit" value="Logout" /></form>
                             \\<form action="/quit" method="post"><input type="submit" value="Quit" /></form>
                         , .{login.user.username.constSlice()});
-                        try req.respond(response_buffer.constSlice(), .{});
+                        try res.send();
                     } else {
                     } else {
-                        try req.respond(
+                        try res.write(
                             \\<a href="/register">Register</a>
                             \\<a href="/login">Login</a>
                             \\<form action="/quit" method="post"><input type="submit" value="Quit" /></form>
                         , .{});
                             \\<a href="/register">Register</a>
                             \\<a href="/login">Login</a>
                             \\<form action="/quit" method="post"><input type="submit" value="Quit" /></form>
                         , .{});
+                        try res.send();
                     }
                 }
             }
             // api
             else {
                     }
                 }
             }
             // api
             else {
-                if (std.mem.eql(u8, req.head.target, "/register")) {
+                if (std.mem.eql(u8, req.target, "/register")) {
                     // TODO: handle args not supplied
                     // TODO: handle args not supplied
-                    const username = get_value(&req, "username").?;
-                    const password = get_value(&req, "password").?;
+                    const username = req.get_value("username").?;
+                    const password = req.get_value("password").?;
 
                     std.debug.print("New user: {s} {s}\n", .{ username, password });
 
                     std.debug.print("New user: {s} {s}\n", .{ username, password });
-                    try register_user(&env, username, password);
-
-                    try redirect(&req, "/login");
-                } else if (std.mem.eql(u8, req.head.target, "/login")) {
+                    if (try register_user(env, username, password)) {
+                        try res.redirect("/login");
+                    } else {
+                        try res.redirect("/register");
+                    }
+                    try res.send();
+                } else if (std.mem.eql(u8, req.target, "/login")) {
                     // TODO: handle args not supplied
                     // TODO: handle args not supplied
-                    const username = get_value(&req, "username").?;
-                    const password = get_value(&req, "password").?;
+                    const username = req.get_value("username").?;
+                    const password = req.get_value("password").?;
 
                     std.debug.print("New login: {s} {s}\n", .{ username, password });
 
                     std.debug.print("New login: {s} {s}\n", .{ username, password });
-                    if (login_user(&env, username, password)) |session_token| {
-                        var redirect_buffer = try std.BoundedArray(u8, 128).init(0);
-                        try std.fmt.format(redirect_buffer.writer(), "/user/{s}", .{username});
-
-                        var cookie_buffer = try std.BoundedArray(u8, 128).init(0);
-                        try std.fmt.format(cookie_buffer.writer(), "session_token={}; Secure; HttpOnly", .{session_token});
-
-                        try req.respond("", .{
-                            .status = .see_other,
-                            .extra_headers = &.{
-                                .{ .name = "Location", .value = redirect_buffer.constSlice() },
-                                .{ .name = "Set-Cookie", .value = cookie_buffer.constSlice() },
-                            },
-                        });
-                    } else {
-                        try redirect(&req, "/login");
+                    if (login_user(env, username, password)) |session_token| {
+                        res.status = .see_other;
+                        try res.add_header(
+                            "Location",
+                            .{ "/user/{s}", .{username} },
+                        );
+                        try res.add_header(
+                            "Set-Cookie",
+                            .{ "session_token={s}; Secure; HttpOnly", .{session_token} },
+                        );
+
+                        try res.send();
+                    } else |err| {
+                        std.debug.print("login_user err: {}\n", .{err});
+                        try res.redirect("/login");
+                        try res.send();
                     }
                     }
-                } else if (std.mem.eql(u8, req.head.target, "/logout")) {
+                } else if (std.mem.eql(u8, req.target, "/logout")) {
                     if (logged_in) |login| {
                     if (logged_in) |login| {
-                        logout_user(&env, login.session_token);
-                        try req.respond("", .{
-                            .status = .see_other,
-                            .extra_headers = &.{
-                                .{ .name = "Location", .value = "/" },
-                                .{ .name = "Set-Cookie", .value = "session_token=deleted; Expires=Thu, 01 Jan 1970 00:00:00 GMT" },
-                            },
-                        });
+                        try logout_user(env, login.session_token);
+
+                        try res.add_header(
+                            "Set-Cookie",
+                            .{"session_token=deleted; Expires=Thu, 01 Jan 1970 00:00:00 GMT"},
+                        );
+
+                        try res.redirect("/");
+                        try res.send();
                     }
                     }
-                } else if (std.mem.eql(u8, req.head.target, "/quit")) {
-                    try redirect(&req, "/");
+                } else if (std.mem.eql(u8, req.target, "/quit")) {
+                    try res.redirect("/");
+                    try res.send();
                     break :accept;
                 } else {
                     break :accept;
                 } else {
-                    try req.respond(
-                        \\<p>POST</p>
-                    , .{});
+                    // try req.respond(
+                    //     \\<p>POST</p>
+                    // , .{});
+                    try res.write("<p>{s}</p>", .{req.target});
+                    try res.send();
                 }
             }
         }
                 }
             }
         }
Proof-of-concept micro-blogging platform