const std = @import("std");
const lmdb = @import("lmdb");
+const db = @import("db");
+const http = @import("http");
// db {{{
-const Prng = struct {
- var prng: std.Random.DefaultPrng = std.Random.DefaultPrng.init(0);
+const Db = struct {
+ fn users(txn: lmdb.Txn) !db.Db(UserId, User) {
+ return try db.Db(UserId, User).init(txn, "users");
+ }
+ fn user_ids(txn: lmdb.Txn) !db.Db(Username, UserId) {
+ return try db.Db(Username, UserId).init(txn, "user_ids");
+ }
+ fn sessions(txn: lmdb.Txn) !db.Db(SessionToken, UserId) {
+ return try db.Db(SessionToken, UserId).init(txn, "sessions");
+ }
+ fn posts(txn: lmdb.Txn) !db.Db(PostId, Post) {
+ return try db.Db(PostId, Post).init(txn, "posts");
+ }
+};
+
+// }}}
+
+// content {{{
+
+const User = struct {
+ // TODO: choose sizes
+ id: UserId,
+ name: Username,
+ display_name: DisplayName,
+ password_hash: PasswordHash,
+ posts: PostList,
+ following: UserList,
+ followers: UserList,
+
+ post_lists: PostListList,
+ feeds: UserListList,
+};
+
+const Post = struct {
+ id: PostId,
+ parent_id: ?PostId,
+ quote_id: ?PostId,
+
+ user_id: UserId,
+ time: Timestamp,
+
+ upvotes: u64 = 0,
+ downvotes: u64 = 0,
+ votes: VoteList,
+ comments: PostList,
+ quotes: PostList,
+
+ text: PostText,
+};
+
+const SavedPostList = struct {
+ name: Name,
+ list: PostList,
+};
+const SavedUserList = struct {
+ name: Name,
+ list: UserList,
+};
+
+const Vote = struct {
+ const Kind = enum { Up, Down };
+
+ kind: Kind,
+ time: Timestamp,
+};
+
+const Id = u64;
+const Login = struct {
+ user: User,
+ session_token: SessionToken,
+};
+const Name = std.BoundedArray(u8, 32);
+const UserId = enum(u64) { _ };
+const PostId = enum(u64) { _ };
+const Timestamp = i64;
+const Username = std.BoundedArray(u8, 32);
+const DisplayName = std.BoundedArray(u8, 64);
+const PasswordHash = std.BoundedArray(u8, 128);
+const SessionToken = u64;
+const CookieValue = std.BoundedArray(u8, 128);
+const PostText = std.BoundedArray(u8, 1024);
+const PostList = db.Set(PostId);
+const UserList = db.Set(UserId);
+const VoteList = db.SetList(UserId, Vote);
+const PostListList = db.List(SavedPostList);
+const UserListList = db.List(SavedUserList);
+
+fn parse_enum(comptime E: type, buf: []const u8, base: u8) !E {
+ return @enumFromInt(try std.fmt.parseUnsigned(@typeInfo(E).Enum.tag_type, buf, base));
+}
+
+// https://developer.mozilla.org/en-US/docs/Glossary/Percent-encoding
+fn reencode(text: []const u8) !PostText {
+ var result = try PostText.init(0);
+
+ const len = @min(text.len, 1024); // TODO: PostText length
+
+ var idx: usize = 0;
+ while (idx < len) : (idx += 1) {
+ const c = text[idx];
+ if (c == '+') {
+ try result.append(' ');
+ } else if (c == '%') {
+ // special case of &#...
+ // assume only &#, no &#x
+ if (idx + 6 < text.len and std.mem.eql(u8, text[idx .. idx + 6], "%26%23")) {
+ const num_start = idx + 6;
+ var num_end = num_start;
+ while (num_end < text.len and std.ascii.isDigit(text[num_end])) {
+ num_end += 1;
+ }
+
+ if (num_end + 2 < text.len and
+ text[num_end] == '%' and
+ text[num_end + 1] == '3' and
+ std.ascii.toLower(text[num_end + 2]) == 'b')
+ {
+ try std.fmt.format(result.writer(), "&#{s};", .{text[num_start..num_end]});
+ idx = num_end + 2;
+ continue;
+ }
+ }
+
+ try std.fmt.format(result.writer(), "&#x{s};", .{text[idx + 1 .. idx + 3]});
+ idx += 2;
+ } else {
+ try result.append(c);
+ }
+ }
+
+ return result;
+}
+
+fn decode(text: []const u8) !std.BoundedArray(u8, 1024) {
+ var result = try std.BoundedArray(u8, 1024).init(0);
+
+ const max_len = @min(text.len, 1024); // TODO: PostText length
+
+ var idx: usize = 0;
+ var len: usize = 0;
+ while (len < max_len and idx < text.len) : ({
+ idx += 1;
+ len += 1;
+ }) {
+ const c = text[idx];
+ if (c == '+') {
+ try result.append(' ');
+ } else if (c == '%') {
+ if (idx + 2 < text.len) {
+ try std.fmt.format(result.writer(), "{c}", .{try std.fmt.parseUnsigned(u8, text[idx + 1 .. idx + 3], 16)});
+ }
+ idx += 2;
+ } else {
+ try result.append(c);
+ }
+ }
- pub fn gen_id(dbi: anytype) Id {
- var id = Prng.prng.next();
+ return result;
+}
+
+const Chirp = struct {
+ const PostsPerPage = 10;
+ const UsersPerPage = 10;
+
+ pub fn hash_password(password: []const u8) !PasswordHash {
+ var hash_buffer = try PasswordHash.init(128);
+
+ // TODO: choose buffer size
+ // TODO: dont allocate on stack, maybe zero memory?
+ var buffer: [1024 * 10]u8 = undefined;
+ var alloc = std.heap.FixedBufferAllocator.init(&buffer);
- while (dbi.has(id)) {
- id = Prng.prng.next();
+ // TODO: choose limits
+ const result = try std.crypto.pwhash.argon2.strHash(password, .{
+ .allocator = alloc.allocator(),
+ .params = std.crypto.pwhash.argon2.Params.fromLimits(1000, 1024),
+ }, hash_buffer.slice());
+
+ try hash_buffer.resize(result.len);
+
+ return hash_buffer;
+ }
+
+ pub fn verify_password(password: []const u8, hash: PasswordHash) bool {
+ var buffer: [1024 * 10]u8 = undefined;
+ var alloc = std.heap.FixedBufferAllocator.init(&buffer);
+
+ if (std.crypto.pwhash.argon2.strVerify(hash.constSlice(), password, .{
+ .allocator = alloc.allocator(),
+ })) {
+ return true;
+ } else |err| {
+ std.debug.print("verify error: {}\n", .{err});
+ return false;
}
+ }
+
+ pub fn register_user(env: lmdb.Env, username: []const u8, password: []const u8) !bool {
+ const username_array = try Username.fromSlice(username);
+ const display_name = try DisplayName.fromSlice(username);
+
+ const txn = try env.txn();
+ defer txn.commit() catch |err| {
+ std.debug.print("error registering user: {}\n", .{err});
+ };
+
+ const users = try Db.users(txn);
+ const user_ids = try Db.user_ids(txn);
+
+ if (try user_ids.has(username_array)) {
+ return false;
+ } else {
+ const user_id = try db.Prng.gen(users.dbi, UserId);
+
+ try users.put(user_id, User{
+ .id = user_id,
+ .name = username_array,
+ .display_name = display_name,
+ .password_hash = try hash_password(password),
+ .posts = try PostList.init(txn),
+ .following = try UserList.init(txn),
+ .followers = try UserList.init(txn),
+ .post_lists = try PostListList.init(txn),
+ .feeds = try UserListList.init(txn),
+ });
+
+ try user_ids.put(username_array, user_id);
+
+ return true;
+ }
+ }
+
+ 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() catch {};
+
+ const user_ids = try Db.user_ids(txn);
+ const user_id = try user_ids.get(username_array);
+ std.debug.print("user logging in, id: {}\n", .{user_id});
+
+ const users = try Db.users(txn);
+ const user = try users.get(user_id);
+
+ if (verify_password(password, user.password_hash)) {
+ const sessions = try Db.sessions(txn);
+ const session_token = try db.Prng.gen(sessions.dbi, SessionToken);
+ try sessions.put(session_token, user_id);
+ return session_token;
+ } else {
+ return error.IncorrectPassword;
+ }
+ }
+
+ fn logout_user(env: lmdb.Env, session_token: SessionToken) !void {
+ const txn = try env.txn();
+ defer txn.commit() catch {};
+
+ const sessions = try Db.sessions(txn);
+ try sessions.del(session_token);
+ }
+
+ fn append_post(env: lmdb.Env, user_id: UserId, post_list: PostList, parent_id: ?PostId, quote_id: ?PostId, text: []const u8) !PostId {
+ var post_id: PostId = undefined;
+
+ // TODO: do this in one commit
+
+ var txn: lmdb.Txn = undefined;
+ {
+ // create post
+ txn = try env.txn();
+ defer txn.commit() catch {};
+
+ const posts = try Db.posts(txn);
+ post_id = try db.Prng.gen(posts.dbi, PostId);
+
+ const decoded_text = try reencode(text);
+ try posts.put(post_id, Post{
+ .id = post_id,
+ .parent_id = parent_id,
+ .quote_id = quote_id,
+ .user_id = user_id,
+ .time = std.time.timestamp(),
+ .votes = try VoteList.init(txn),
+ .comments = try PostList.init(txn),
+ .quotes = try PostList.init(txn),
+ .text = decoded_text,
+ });
+ }
+
+ {
+ // append to user's posts
+ txn = try env.txn();
+ defer txn.commit() catch {};
+
+ var posts_view = try post_list.open(txn);
+ try posts_view.append(post_id);
+ }
+
+ if (quote_id != null) {
+ txn = try env.txn();
+ defer txn.commit() catch {};
+
+ const posts = try Db.posts(txn);
+ const quote_post = try posts.get(quote_id.?);
+ var quotes = try quote_post.quotes.open(txn);
+ try quotes.append(post_id);
+ }
+
+ return post_id;
+ }
+
+ fn post(env: lmdb.Env, user_id: UserId, text: []const u8) !void {
+ var txn = try env.txn();
+ const users = try Db.users(txn);
+ const user = try users.get(user_id);
+ txn.abort();
+
+ const post_id = try append_post(env, user_id, user.posts, null, null, text);
+ _ = post_id;
+ }
+
+ fn comment(env: lmdb.Env, user_id: UserId, parent_post_id: PostId, text: []const u8) !void {
+ var txn = try env.txn();
+ const users = try Db.users(txn);
+ const user = try users.get(user_id);
+
+ const posts = try Db.posts(txn);
+ const parent_post = try posts.get(parent_post_id);
+ txn.abort();
+
+ const post_id = try append_post(env, user_id, parent_post.comments, parent_post_id, null, text);
+
+ txn = try env.txn();
+ var replies_view = try user.posts.open(txn);
+ try replies_view.append(post_id);
+ try txn.commit();
+ }
+
+ fn quote(env: lmdb.Env, user_id: UserId, quote_post_id: PostId, text: []const u8) !void {
+ var txn = try env.txn();
+ const users = try Db.users(txn);
+ const user = try users.get(user_id);
+ txn.abort();
- return id;
+ const post_id = try append_post(env, user_id, user.posts, null, quote_post_id, text);
+ _ = post_id;
+ }
+
+ fn vote(env: lmdb.Env, post_id: PostId, user_id: UserId, kind: Vote.Kind) !void {
+ const txn = try env.txn();
+ defer txn.commit() catch {};
+
+ const posts = try Db.posts(txn);
+
+ var p = try posts.get(post_id);
+ var votes_view = try p.votes.open(txn);
+
+ var add_vote = true;
+
+ if (try votes_view.has(user_id)) {
+ const old_vote = try votes_view.get(user_id);
+
+ add_vote = old_vote.kind != kind;
+
+ try votes_view.del(user_id);
+
+ switch (old_vote.kind) {
+ .Up => p.upvotes -= 1,
+ .Down => p.downvotes -= 1,
+ }
+ try posts.put(post_id, p);
+ }
+
+ if (add_vote) {
+ try votes_view.append(user_id, Vote{
+ .kind = kind,
+ .time = std.time.timestamp(),
+ });
+
+ if (kind == .Up) {
+ p.upvotes += 1;
+ } else {
+ p.downvotes += 1;
+ }
+ try posts.put(post_id, p);
+ }
+ }
+
+ fn follow(env: lmdb.Env, user_id: UserId, user_id_to_follow: UserId) !void {
+ const txn = try env.txn();
+ defer txn.commit() catch {};
+
+ const users = try Db.users(txn);
+
+ const user = try users.get(user_id);
+ const user_to_follow = try users.get(user_id_to_follow);
+
+ var user_following = try user.following.open(txn);
+ var user_to_follow_followers = try user_to_follow.followers.open(txn);
+
+ if ((user_following.has(user_id_to_follow) catch false) and (user_to_follow_followers.has(user_id) catch false)) {
+ try user_following.del(user_id_to_follow);
+ try user_to_follow_followers.del(user_id);
+ } else if (!(user_following.has(user_id_to_follow) catch true) and !(user_to_follow_followers.has(user_id) catch true)) {
+ try user_following.append(user_id_to_follow);
+ try user_to_follow_followers.append(user_id);
+ } else {
+ std.debug.print("Something went wrong when trying to unfollow\n", .{});
+ }
+ }
+
+ fn get_session_user_id(env: lmdb.Env, session_token: SessionToken) !UserId {
+ const txn = try env.txn();
+ defer txn.abort();
+
+ const sessions = try Db.sessions(txn);
+
+ return try sessions.get(session_token);
+ }
+
+ fn get_user(env: lmdb.Env, user_id: UserId) !User {
+ const txn = try env.txn();
+ defer txn.abort();
+
+ const users = try Db.users(txn);
+ return try users.get(user_id);
}
};
// }}}
-// http stuff {{{
+// html {{{
+pub fn Paginate(comptime T: type) type {
+ return struct {
+ const Self = @This();
+
+ const IterateResult = T.Base.View.Iterator.Result;
+
+ res: *http.Response,
+ view: T.View,
+ per_page: u64,
+
+ it: T.Base.View.Iterator,
+ starting_idx: ?T.Base.Key,
+ count: u64 = 0,
+
+ pub fn init(res: *http.Response, view: T.View, per_page: u64) !Self {
+ var it = view.reverse_iterator();
+ if (res.req.get_param("starting_at")) |starting_at_str| {
+ it.idx = try parse_enum(T.Base.Key, starting_at_str, 16);
+ }
+
+ if (it.idx == null) {
+ return error.InvalidIterator;
+ }
+
+ return .{
+ .res = res,
+ .view = view,
+ .per_page = per_page,
+ .it = it,
+ .starting_idx = it.idx.?,
+ };
+ }
+ pub fn next(self: *Self) IterateResult {
+ if (self.it.next()) |kv| {
+ if (self.count < self.per_page) {
+ self.count += 1;
+ return kv;
+ }
+ }
+ return null;
+ }
+ pub fn write_navigation(self: *Self) !void {
+ const next_idx = self.it.next();
+
+ if (self.view.base.head.last != self.starting_idx) {
+ var prev_it = self.view.iterator();
+ prev_it.idx = self.starting_idx.?;
+ var oldest_idx = self.starting_idx.?;
-pub fn redirect(req: *std.http.Server.Request, location: []const u8) !void {
- try req.respond("", .{ .status = .see_other, .extra_headers = &.{.{ .name = "Location", .value = location }} });
+ var count: u64 = 0;
+ while (prev_it.next()) |kv| {
+ oldest_idx = kv.key;
+
+ if (count > self.per_page) {
+ break;
+ } else {
+ count += 1;
+ }
+ }
+
+ try self.res.write("<a href=\"{s}?starting_at={x}\">Prev</a> ", .{ self.res.req.target, @intFromEnum(oldest_idx) });
+ }
+
+ if (next_idx) |kv| {
+ try self.res.write("<a href=\"{s}?starting_at={x}\">Next</a>", .{ self.res.req.target, @intFromEnum(kv.key) });
+ }
+ }
+ };
+}
+fn html_form(res: *http.Response, action: []const u8, inputs: anytype) !void {
+ try res.write("<form action=\"{s}\" method=\"post\">", .{action});
+
+ inline for (inputs) |input| {
+ switch (@typeInfo(@TypeOf(input))) {
+ .Struct => {
+ try res.write("<input ", .{});
+ try res.write(input[0], input[1]);
+ try res.write(" />", .{});
+ },
+ else => {
+ try res.write("<input ", .{});
+ try res.write(input, .{});
+ try res.write(" />", .{});
+ },
+ }
+ }
+
+ try res.write("</form>", .{});
}
+// }}}
+
+// write {{{
+const TimeStr = std.BoundedArray(u8, 256);
+
+// http://howardhinnant.github.io/date_algorithms.html
+fn time_str(_t: i64) TimeStr {
+ const t: u64 = @intCast(_t);
+ var result = TimeStr.init(0) catch unreachable;
+
+ const nD = @divFloor(t, std.time.s_per_day);
+ const z: u64 = nD + 719468;
+ const era: u64 = (if (z >= 0) z else z - 146096) / 146097;
+ const doe: u64 = z - era * 146097; // [0, 146096]
+ const yoe: u64 = (doe - doe / 1460 + doe / 36524 - doe / 146096) / 365; // [0, 399]
+ const Y: u64 = yoe + era * 400;
+ const doy: u64 = doe - (365 * yoe + yoe / 4 - yoe / 100); // [0, 365]
+ const mp: u64 = (5 * doy + 2) / 153; // [0, 11]
+ const D: u64 = doy - (153 * mp + 2) / 5 + 1; // [1, 31]
+ const M: u64 = if (mp < 10) mp + 3 else mp - 9;
+
+ const h: u64 = @divFloor(t - nD * std.time.s_per_day, std.time.s_per_hour);
+ const m: u64 = @divFloor(t - nD * std.time.s_per_day - h * std.time.s_per_hour, std.time.s_per_min);
+ const s: u64 = t - nD * std.time.s_per_day - h * std.time.s_per_hour - m * std.time.s_per_min;
-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)];
+ std.fmt.format(result.writer(), "<time><span>{:0>4}-{:0>2}-{:0>2} {:0>2}:{:0>2}:{:0>2} UTC</span><script>document.currentScript.parentElement.innerHTML=new Date({}).toLocaleString()</script></time>", .{ Y, M, D, h, m, s, t * 1000 }) catch unreachable;
+
+ return result;
+}
+fn write_header(res: *http.Response, logged_in: ?Login) !void {
+ if (logged_in) |login| {
+ try res.write(
+ \\<a href="/">Home</a><br />
+ , .{});
+ try res.write(
+ \\<a href="/user/{s}">Profile</a><br />
+ , .{login.user.name.constSlice()});
+ try res.write(
+ \\<a href="/post">Post</a><br />
+ , .{});
+ try html_form(res, "/logout", .{
+ \\type="submit" value="Logout"
+ });
+ try res.write("<br /><br />", .{});
+ } else {
+ try res.write(
+ \\<a href="/">Home</a><br />
+ \\<form action="/register" method="post">
+ \\<input type="text" name="username" />
+ \\<input type="password" name="password" />
+ \\<input type="submit" value="Register" />
+ \\</form><br />
+ \\<form action="/login" method="post">
+ \\<input type="text" name="username" />
+ \\<input type="password" name="password" />
+ \\<input type="submit" value="Login" />
+ \\</form><br /><br />
+ , .{});
+ }
+}
+fn write_start(res: *http.Response) !void {
+ try res.write(
+ \\<!doctype html>
+ \\<html>
+ \\<head>
+ \\<link rel="icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>🐣</text></svg>">
+ \\<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+ \\<style>
+ \\ form {
+ \\ display: inline-block;
+ \\ }
+ \\</style>
+ \\</head>
+ \\<body>
+ , .{});
+}
+fn write_end(res: *http.Response) !void {
+ try res.write("</body></html>", .{});
}
+fn write_post(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, post_id: PostId, options: struct { recurse: u8 = 0, show_comment_field: bool = false }) !void {
+ const posts = try Db.posts(txn);
+ const post = posts.get(post_id) catch {
+ res.redirect("/") catch {};
+ return;
+ };
+ const users = try Db.users(txn);
+ const user = try users.get(post.user_id);
+
+ try res.write(
+ \\<div id="{x}">
+ \\<span><a href="/user/{s}">{s}</a>
+ , .{ @intFromEnum(post_id), user.name.constSlice(), user.display_name.constSlice() });
+ if (post.parent_id) |id| {
+ try res.write(" <a href=\"/post/{x}\">..</a>", .{@intFromEnum(id)});
+ }
+ try res.write(
+ \\ {s}</span><br />
+ \\<span>{s}</span><br />
+ , .{ time_str(post.time).constSlice(), post.text.constSlice() });
+
+ if (logged_in != null and post.user_id == logged_in.?.user.id) {
+ // Votes
+ try res.write(
+ \\<small>
+ \\<a href="/upvotes/{0x}">{1} Upvotes</a>
+ \\<a href="/downvotes/{0x}">{2} Downvotes</a>
+ \\</small>
+ \\<br />
+ , .{ @intFromEnum(post_id), post.upvotes, post.downvotes });
+ }
+
+ if (post.quote_id) |quote_id| {
+ try res.write("<div style=\"border: 1px solid black;\">", .{});
+ if (options.recurse > 0) {
+ try write_post(res, txn, logged_in, quote_id, .{ .recurse = options.recurse - 1 });
+ } else {
+ try res.write("<a href=\"/post/{x}\">...</a>", .{@intFromEnum(post_id)});
+ }
+ try res.write("</div>", .{});
+ }
-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];
+ const comments_view = try post.comments.open(txn);
+ const quotes_view = try post.quotes.open(txn);
+ const votes_view = try post.votes.open(txn);
+
+ // Votes
+ const vote: ?Vote = if (logged_in != null and try votes_view.has(logged_in.?.user.id)) try votes_view.get(logged_in.?.user.id) else null;
+
+ if (vote != null and vote.?.kind == .Up) {
+ try html_form(res, "/upvote", .{
+ .{ "type=\"hidden\" value=\"{x}\" name=\"post_id\"", .{@intFromEnum(post.id)} },
+ .{ "type=\"submit\" value=\"⬆ {}\"", .{post.upvotes} },
+ });
+ } else {
+ try html_form(res, "/upvote", .{
+ .{ "type=\"hidden\" value=\"{x}\" name=\"post_id\"", .{@intFromEnum(post.id)} },
+ .{ "type=\"submit\" value=\"⇧ {}\"", .{post.upvotes} },
+ });
+ }
+ if (vote != null and vote.?.kind == .Down) {
+ try html_form(res, "/downvote", .{
+ .{ "type=\"hidden\" value=\"{x}\" name=\"post_id\"", .{@intFromEnum(post.id)} },
+ .{ "type=\"submit\" value=\"⬇ {}\"", .{post.downvotes} },
+ });
+ } else {
+ try html_form(res, "/downvote", .{
+ .{ "type=\"hidden\" value=\"{x}\" name=\"post_id\"", .{@intFromEnum(post.id)} },
+ .{ "type=\"submit\" value=\"⇩ {}\"", .{post.downvotes} },
+ });
+ }
+
+ // Comment Count
+ try res.write(
+ \\<a href="/post/{x}">💭 {}</a>
+ , .{ @intFromEnum(post.id), comments_view.len() });
+
+ // Quote
+ try res.write(
+ \\<a href="/quoted/{x}">🔁 {}</a>
+ , .{ @intFromEnum(post.id), quotes_view.len() });
+
+ // Save to List
+ if (logged_in) |login| {
+ const lists_view = try login.user.post_lists.open(txn);
+ try res.write("<form action=\"/list_add\" method=\"post\">", .{});
+ try res.write("<select name=\"list_id\">", .{});
+ var it = lists_view.iterator();
+ // TODO: mark lists that already contain post
+ while (it.next()) |kv| {
+ const name = kv.val.name;
+ const id = kv.val.list.base.idx.?;
+ const list_view = try kv.val.list.open(txn);
+ try res.write("<option value=\"{x}\">{s}{s}</option>", .{ id, name.constSlice(), if (list_view.has(post_id) catch false) " *" else "" });
+ }
+ try res.write("</select>", .{});
+ try res.write("<input type=\"hidden\" name=\"post_id\" value=\"{x}\"></input>", .{@intFromEnum(post_id)});
+ try res.write("<input type=\"submit\" value=\"Save\"></input>", .{});
+ try res.write("</form>", .{});
+ }
+
+ // Comment field
+ // TODO: maybe always show comment field and prompt for login
+ if (options.show_comment_field and logged_in != null) {
+ try res.write("<br /><br />", .{});
+ try html_form(res, "/comment", .{
+ .{ "type=\"hidden\" value=\"{x}\" name=\"post_id\"", .{@intFromEnum(post.id)} },
+ "type=\"text\" name=\"text\" placeholder=\"Text\"",
+ "type=\"submit\" value=\"Comment\"",
+ });
+ try res.write("<br />", .{});
+ }
+
+ // Comments
+ if (options.recurse > 0 and comments_view.len() > 0) {
+ try res.write(
+ \\<details{s}>
+ \\<summary>Comments</summary>
+ , .{if (options.recurse > 1) " open" else ""});
+ try res.write("<div style=\"margin: 10px;\">", .{});
+ var it = comments_view.iterator();
+ var count: u8 = 0;
+ while (it.next()) |comment_id| {
+ try write_post(res, txn, logged_in, comment_id.key, .{ .recurse = options.recurse - 1 });
+ try res.write("<br />", .{});
+ if (options.recurse == 1) {
+ count += 1;
+ if (count >= 3) break;
}
+ }
+ try res.write(
+ \\</div>
+ \\</details>
+ , .{});
+ }
+
+ try res.write(
+ \\</div>
+ , .{});
+}
+fn write_profile(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, user: User) !void {
+ const following = try user.following.open(txn);
+ const followers = try user.followers.open(txn);
+
+ try res.write(
+ \\<h2 style="display: inline;"><a href="/user/{s}">{s}</a></h2>
+ , .{
+ user.name.constSlice(), user.display_name.constSlice(),
+ });
+ if (logged_in != null and user.id != logged_in.?.user.id) {
+ const login = logged_in.?;
+
+ // follow/unfollow
+ if (try followers.has(login.user.id)) {
+ try html_form(res, "/follow", .{
+ .{ "type=\"hidden\" name=\"user_id\" value=\"{x}\"", .{@intFromEnum(user.id)} },
+ \\type="submit" value="Unfollow"
+ });
+ } else {
+ try html_form(res, "/follow", .{
+ .{ "type=\"hidden\" name=\"user_id\" value=\"{x}\"", .{@intFromEnum(user.id)} },
+ \\type="submit" value="Follow"
+ });
+ }
- return body[eql_index + 1 .. body.len];
+ // add to feed
+ const feeds_view = try login.user.feeds.open(txn);
+ try res.write("<form action=\"/feed_add\" method=\"post\">", .{});
+ try res.write("<select name=\"feed_id\">", .{});
+ var it = feeds_view.iterator();
+ while (it.next()) |kv| {
+ const name = kv.val.name;
+ const id = kv.val.list.base.idx.?;
+ const list_view = try kv.val.list.open(txn);
+ try res.write("<option value=\"{x}\">{s}{s}</option>", .{ id, name.constSlice(), if (list_view.has(user.id) catch false) " *" else "" });
}
+ try res.write("</select>", .{});
+ try res.write("<input type=\"hidden\" name=\"user_id\" value=\"{x}\"></input>", .{@intFromEnum(user.id)});
+ try res.write("<input type=\"submit\" value=\"Add to feed\"></input>", .{});
+ try res.write("</form>", .{});
+ }
+ try res.write(
+ \\ <a href="/following/{s}">{} following</a>
+ \\ <a href="/followers/{s}">{} followers</a>
+ \\<br />
+ , .{
+ user.name.constSlice(), following.len(),
+ user.name.constSlice(), followers.len(),
+ });
+
+ try res.write(
+ \\<a href="/all/{0s}">All Posts</a>
+ \\ <a href="/comments/{0s}">Comments</a>
+ \\ <a href="/quotes/{0s}">Quotes</a><br />
+ , .{
+ user.name.constSlice(),
+ });
+
+ if (logged_in != null and user.id == logged_in.?.user.id) {
+ try res.write(
+ \\<a href="/lists">Lists</a>
+ \\<a href="/feeds">Feeds</a>
+ \\<a href="/edit">Edit</a><br />
+ \\<br />
+ , .{});
}
- return null;
+
+ try res.write("<br />", .{});
}
+fn write_posts(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, post_list: PostList, options: struct {
+ show_posts: bool,
+ show_quotes: bool,
+ show_comments: bool,
+}) !void {
+ const posts_view = try post_list.open(txn);
+
+ var paginate = try Paginate(PostList).init(res, posts_view, Chirp.PostsPerPage);
+
+ while (paginate.next()) |post_id| {
+ const posts = try Db.posts(txn);
+ const post = try posts.get(post_id.key);
+ if ((options.show_posts and (post.parent_id == null and post.quote_id == null)) or
+ (options.show_quotes and (post.quote_id != null)) or
+ (options.show_comments and (post.parent_id != null)))
+ {
+ try write_post(res, txn, logged_in, post_id.key, .{ .recurse = 1 });
+ try res.write("<br />", .{});
+ }
+ }
-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;
- }
+ try paginate.write_navigation();
+}
+fn write_timeline(res: *http.Response, txn: lmdb.Txn, logged_in: ?Login, user_list: UserList) !void {
+ const users = try Db.users(txn);
+ const posts = try Db.posts(txn);
+
+ var newest_post_ids = try std.BoundedArray(PostId, 10).init(0); // TODO: TimelinePostsCount
+ var prev_newest_post: ?Post = null;
+
+ const following = try user_list.open(txn);
- return CookieValue.fromSlice(header.value[eql_index + 1 .. header.value.len]) catch null;
+ while (true) {
+ var newest_post: ?Post = null;
+
+ var following_it = following.iterator();
+ while (following_it.next()) |following_id| {
+ const followed_user = try users.get(following_id.key);
+ const followed_posts = try followed_user.posts.open(txn);
+
+ if (followed_posts.len() == 0) {
+ continue;
+ }
+
+ var followed_posts_it = followed_posts.reverse_iterator();
+ while (followed_posts_it.next()) |followed_post_id| {
+ const p = try posts.get(followed_post_id.key);
+
+ if ((prev_newest_post == null or p.time < prev_newest_post.?.time) and (newest_post == null or newest_post.?.time < p.time)) {
+ newest_post = p;
+ break;
}
}
}
+ if (newest_post) |post| {
+ newest_post_ids.append(post.id) catch break;
+ prev_newest_post = post;
+ } else {
+ break;
+ }
+ }
+
+ for (newest_post_ids.constSlice()) |post_id| {
+ try write_post(res, txn, logged_in, post_id, .{ .recurse = 1 });
+ try res.write("<br />", .{});
+ }
+}
+fn write_user(res: *http.Response, txn: lmdb.Txn, user_id: UserId) !void {
+ const users = try Db.users(txn);
+ const user = try users.get(user_id);
+ try res.write(
+ \\<a href="/user/{s}">{s}</a>
+ , .{ user.name.constSlice(), user.display_name.constSlice() });
+}
+fn write_votes(res: *http.Response, txn: lmdb.Txn, votes: VoteList, options: struct {
+ show_upvotes: bool = true,
+ show_downvotes: bool = true,
+}) !void {
+ const votes_view = try votes.open(txn);
+
+ var paginate = try Paginate(VoteList).init(res, votes_view, Chirp.UsersPerPage);
+
+ while (paginate.next()) |kv| {
+ const user_id = kv.key;
+ const vote = kv.val;
+
+ if ((options.show_upvotes and vote.kind == .Up) or
+ (options.show_downvotes and vote.kind == .Down))
+ {
+ try write_user(res, txn, user_id);
+ try res.write(" <small>{s}</small><br />", .{time_str(vote.time).constSlice()});
+ }
}
- return null;
+
+ try paginate.write_navigation();
}
+fn check_login(env: lmdb.Env, req: http.Request, res: *http.Response) !?Login {
+ var result: ?Login = null;
+
+ if (req.get_cookie("session_token")) |session_token_str| {
+ var remove_session_token = true;
+
+ if (std.fmt.parseUnsigned(SessionToken, session_token_str, 16) catch null) |session_token| {
+ // const session_token = try std.fmt.parseUnsigned(SessionToken, session_token_str, 10);
+ // const session_token = std.mem.bytesToValue(SessionToken, session_token_str);
+ if (Chirp.get_session_user_id(env, session_token) catch null) |user_id| {
+ const txn = try env.txn();
+ defer txn.abort();
+ const users = try Db.users(txn);
+
+ result = .{
+ .user = try users.get(user_id),
+ .session_token = session_token,
+ };
+
+ remove_session_token = false;
+ }
+ }
+ if (remove_session_token) {
+ try res.add_header(
+ "Set-Cookie",
+ .{"session_token=deleted; Expires=Thu, 01 Jan 1970 00:00:00 GMT"},
+ );
+ }
+ }
+
+ return result;
+}
// }}}
-// content {{{
+// GET {{{
+const GET = struct {
+ const Self = @This();
+
+ txn: lmdb.Txn,
+ req: http.Request,
+ res: *http.Response,
+ logged_in: ?Login,
+
+ fn handle(self: Self) !bool {
+ const ti = @typeInfo(Self);
+ inline for (ti.Struct.decls) |f_decl| {
+ const has_arg = f_decl.name.len > 1 and f_decl.name[f_decl.name.len - 1] == '/';
+ const match = if (has_arg) std.mem.startsWith(u8, self.req.target, f_decl.name) else std.mem.eql(u8, self.req.target, f_decl.name);
+
+ if (match) {
+ const f = @field(Self, f_decl.name);
+ const fi = @typeInfo(@TypeOf(f));
+ if (fi.Fn.params.len == 1) {
+ try @call(.auto, f, .{self});
+ } else {
+ const arg_type = fi.Fn.params[1].type.?;
+ const arg_info = @typeInfo(arg_type);
+ var arg: arg_type = undefined;
+ const field = arg_info.Struct.fields[0];
+ if (self.req.target.len <= f_decl.name.len) {
+ return error.NoArgProvided;
+ }
+ const str = self.req.target[f_decl.name.len..self.req.target.len];
+ const field_ti = @typeInfo(field.type);
+ switch (field_ti) {
+ // TODO: maybe handle BoundedArray?
+ .Int => {
+ @field(arg, field.name) = try std.fmt.parseUnsigned(field.type, str, 16);
+ },
+ .Enum => {
+ @field(arg, field.name) = try parse_enum(field.type, str, 16);
+ },
+ else => {
+ @field(arg, field.name) = str;
+ },
+ }
-const User = struct {
- // TODO: choose sizes
- username: Username,
- password_hash: PasswordHash,
-};
+ try @call(.auto, f, .{ self, arg });
+ }
+ return true;
+ }
+ }
+ return false;
+ }
-const Id = u64;
-const Username = std.BoundedArray(u8, 16);
-const PasswordHash = std.BoundedArray(u8, 128);
-const SessionToken = u64;
-const CookieValue = std.BoundedArray(u8, 128);
+ pub fn @"/user/"(self: Self, args: struct { username: []const u8 }) !void {
+ const user_ids = try Db.user_ids(self.txn);
+ if (user_ids.get(try Username.fromSlice(args.username))) |user_id| {
+ const users = try Db.users(self.txn);
+ const user = try users.get(user_id);
+
+ try write_profile(self.res, self.txn, self.logged_in, user);
+
+ try write_posts(self.res, self.txn, self.logged_in, user.posts, .{
+ .show_posts = true,
+ .show_quotes = false,
+ .show_comments = false,
+ });
+ } else |err| {
+ try self.res.write(
+ \\<p>User not found [{}]</p>
+ , .{err});
+ }
+ }
+ pub fn @"/comments/"(self: Self, args: struct { username: []const u8 }) !void {
+ const user_ids = try Db.user_ids(self.txn);
+ if (user_ids.get(try Username.fromSlice(args.username))) |user_id| {
+ const users = try Db.users(self.txn);
+ const user = try users.get(user_id);
+
+ try write_profile(self.res, self.txn, self.logged_in, user);
+
+ try write_posts(self.res, self.txn, self.logged_in, user.posts, .{
+ .show_posts = false,
+ .show_quotes = false,
+ .show_comments = true,
+ });
+ } else |err| {
+ try self.res.write(
+ \\<p>User not found [{}]</p>
+ , .{err});
+ }
+ }
+ pub fn @"/quotes/"(self: Self, args: struct { username: []const u8 }) !void {
+ const user_ids = try Db.user_ids(self.txn);
+ if (user_ids.get(try Username.fromSlice(args.username))) |user_id| {
+ const users = try Db.users(self.txn);
+ const user = try users.get(user_id);
+
+ try write_profile(self.res, self.txn, self.logged_in, user);
+
+ try write_posts(self.res, self.txn, self.logged_in, user.posts, .{
+ .show_posts = false,
+ .show_quotes = true,
+ .show_comments = false,
+ });
+ } else |err| {
+ try self.res.write(
+ \\<p>User not found [{}]</p>
+ , .{err});
+ }
+ }
+ pub fn @"/all/"(self: Self, args: struct { username: []const u8 }) !void {
+ const user_ids = try Db.user_ids(self.txn);
+ if (user_ids.get(try Username.fromSlice(args.username))) |user_id| {
+ const users = try Db.users(self.txn);
+ const user = try users.get(user_id);
+
+ try write_profile(self.res, self.txn, self.logged_in, user);
+
+ try write_posts(self.res, self.txn, self.logged_in, user.posts, .{
+ .show_posts = true,
+ .show_quotes = true,
+ .show_comments = true,
+ });
+ } else |err| {
+ try self.res.write(
+ \\<p>User not found [{}]</p>
+ , .{err});
+ }
+ }
+ pub fn @"/following/"(self: Self, args: struct { username: []const u8 }) !void {
+ const user_ids = try Db.user_ids(self.txn);
+ if (user_ids.get(try Username.fromSlice(args.username))) |user_id| {
+ const users = try Db.users(self.txn);
+ const user = try users.get(user_id);
-pub fn hash_password(password: []const u8) !PasswordHash {
- var hash_buffer = try PasswordHash.init(128);
+ const following_view = try user.following.open(self.txn);
- // TODO: choose buffer size
- // TODO: dont allocate on stack, maybe zero memory?
- var buffer: [1024 * 10]u8 = undefined;
- var alloc = std.heap.FixedBufferAllocator.init(&buffer);
+ var paginate = try Paginate(UserList).init(self.res, following_view, Chirp.UsersPerPage);
- // TODO: choose limits
- const result = try std.crypto.pwhash.argon2.strHash(password, .{
- .allocator = alloc.allocator(),
- .params = std.crypto.pwhash.argon2.Params.fromLimits(1000, 1024),
- }, hash_buffer.slice());
+ try self.res.write(
+ \\<h2><a href="/user/{s}">{s}</a> follows:</h2>
+ , .{ user.name.constSlice(), user.display_name.constSlice() });
- try hash_buffer.resize(result.len);
+ while (paginate.next()) |following_id| {
+ const following_user = try users.get(following_id.key);
- return hash_buffer;
-}
+ try self.res.write(
+ \\<a href="/user/{s}">{s}</a><br />
+ , .{ following_user.name.constSlice(), following_user.display_name.constSlice() });
+ }
+
+ try paginate.write_navigation();
+ } else |err| {
+ try self.res.write(
+ \\<p>User not found [{}]</p>
+ , .{err});
+ }
+ }
+ pub fn @"/followers/"(self: Self, args: struct { username: []const u8 }) !void {
+ const user_ids = try Db.user_ids(self.txn);
+ if (user_ids.get(try Username.fromSlice(args.username))) |user_id| {
+ const users = try Db.users(self.txn);
+ const user = try users.get(user_id);
+
+ const followers_view = try user.followers.open(self.txn);
+ var paginate = try Paginate(UserList).init(self.res, followers_view, Chirp.UsersPerPage);
+
+ try self.res.write(
+ \\<h2><a href="/user/{s}">{s}</a> followers:</h2>
+ , .{ user.name.constSlice(), user.display_name.constSlice() });
+
+ while (paginate.next()) |follower_id| {
+ const follower_user = try users.get(follower_id.key);
+
+ try self.res.write(
+ \\<a href="/user/{s}">{s}</a><br />
+ , .{ follower_user.name.constSlice(), follower_user.display_name.constSlice() });
+ }
+
+ try paginate.write_navigation();
+ } else |err| {
+ try self.res.write(
+ \\<p>User not found [{}]</p>
+ , .{err});
+ }
+ }
+ pub fn @"/post/"(self: Self, args: struct { post_id: PostId }) !void {
+ try write_post(self.res, self.txn, self.logged_in, args.post_id, .{
+ .recurse = 3, // TODO: factor out
+ .show_comment_field = true,
+ });
+ }
+ pub fn @"/upvotes/"(self: Self, args: struct { post_id: PostId }) !void {
+ const posts = try Db.posts(self.txn);
+ const post = try posts.get(args.post_id);
+ try self.res.write("{} upvotes:<br />", .{post.upvotes});
+ try write_votes(self.res, self.txn, post.votes, .{});
+ }
+ pub fn @"/quoted/"(self: Self, args: struct { post_id: PostId }) !void {
+ const posts = try Db.posts(self.txn);
+ const post = try posts.get(args.post_id);
+
+ const referer = if (self.req.get_header("Referer")) |ref| ref else self.req.target;
+
+ if (self.logged_in != null) {
+ try html_form(self.res, "/quote", .{
+ .{ "type=\"hidden\" name=\"referer\" value=\"{s}\"", .{referer} },
+ .{ "type=\"hidden\" name=\"post_id\" value=\"{x}\"", .{@intFromEnum(post.id)} },
+ "type=\"text\" name=\"text\" placeholder=\"Text\" autofocus",
+ "type=\"submit\" value=\"Quote\"",
+ });
+ try self.res.write("<br />", .{});
+ }
-pub fn verify_password(password: []const u8, hash: PasswordHash) bool {
- var buffer: [1024 * 10]u8 = undefined;
- var alloc = std.heap.FixedBufferAllocator.init(&buffer);
+ // TODO: show all bc this only contains quotes?
+ try write_posts(self.res, self.txn, self.logged_in, post.quotes, .{
+ .show_posts = false,
+ .show_quotes = true,
+ .show_comments = false,
+ });
+ }
+ pub fn @"/list/"(self: Self, args: struct { list_id: PostList.Base.Index }) !void {
+ try write_posts(self.res, self.txn, self.logged_in, PostList{ .base = .{ .idx = args.list_id } }, .{
+ .show_posts = true,
+ .show_quotes = true,
+ .show_comments = true,
+ });
+ }
+ pub fn @"/lists"(self: Self) !void {
+ if (self.logged_in) |login| {
+ const post_lists_view = try login.user.post_lists.open(self.txn);
+
+ try html_form(self.res, "/create_list", .{
+ "type=\"text\" name=\"name\"",
+ "type=\"submit\" value=\"Add\"",
+ });
+
+ try self.res.write("<br /><br />", .{});
+
+ var it = post_lists_view.iterator();
+ while (it.next()) |kv| {
+ const name = kv.val.name;
+ const post_list = kv.val.list;
+ try self.res.write(
+ \\<a href="/list/{x}">{s}</a>
+ , .{ post_list.base.idx.?, name.constSlice() });
+ try html_form(self.res, "/delete_list", .{
+ .{ "type=\"hidden\" name=\"list_id\" value=\"{x}\"", .{kv.key} },
+ "type=\"submit\" value=\"Delete\"",
+ });
+ try self.res.write("<br />", .{});
+ }
+ } else {
+ try self.res.write("not logged in", .{});
+ }
+ }
+ pub fn @"/feed/"(self: Self, args: struct { feed_id: UserList.Base.Index }) !void {
+ try write_timeline(self.res, self.txn, self.logged_in, UserList{ .base = .{ .idx = args.feed_id } });
+ }
+ pub fn @"/feeds"(self: Self) !void {
+ if (self.logged_in) |login| {
+ const feeds_view = try login.user.feeds.open(self.txn);
+
+ try html_form(self.res, "/create_feed", .{
+ "type=\"text\" name=\"name\"",
+ "type=\"submit\" value=\"Add\"",
+ });
+
+ try self.res.write("<br /><br />", .{});
+
+ var it = feeds_view.iterator();
+ while (it.next()) |kv| {
+ const name = kv.val.name;
+ const user_list = kv.val.list;
+ try self.res.write(
+ \\<a href="/feed/{x}">{s}</a>
+ , .{ user_list.base.idx.?, name.constSlice() });
+ try html_form(self.res, "/delete_feed", .{
+ .{ "type=\"hidden\" name=\"list_id\" value=\"{x}\"", .{kv.key} },
+ "type=\"submit\" value=\"Delete\"",
+ });
+ try self.res.write("<br />", .{});
+ }
+ } else {
+ try self.res.write("not logged in", .{});
+ }
+ }
+ pub fn @"/post"(self: Self) !void {
+ if (self.logged_in) |login| {
+ _ = login;
+ const referer = if (self.req.get_header("Referer")) |ref| ref else self.req.target;
+
+ try html_form(self.res, "/post", .{
+ .{ "type=\"hidden\" name=\"referer\" value=\"{s}\"", .{referer} },
+ "type=\"text\" name=\"text\" placeholder=\"Text\" autofocus",
+ "type=\"submit\" value=\"Post\"",
+ });
+ } else {
+ try self.res.write("not logged in", .{});
+ }
+ }
+ pub fn @"/edit"(self: Self) !void {
+ if (self.logged_in) |login| {
+ try self.res.write("<br />Username: ", .{});
+ try html_form(self.res, "/set_username", .{
+ .{ "type=\"text\" name=\"username\" placeholder=\"{s}\"", .{login.user.name.constSlice()} },
+ "type=\"submit\" value=\"Change\"",
+ });
+ try self.res.write("<br />Display Name: ", .{});
+ try html_form(self.res, "/set_display_name", .{
+ .{ "type=\"text\" name=\"display_name\" placeholder=\"{s}\"", .{login.user.display_name.constSlice()} },
+ "type=\"submit\" value=\"Change\"",
+ });
+ try self.res.write("<br />Password: ", .{});
+ try html_form(self.res, "/set_password", .{
+ "type=\"text\" name=\"password\"",
+ "type=\"submit\" value=\"Change\"",
+ });
+ } else {
+ try self.res.write("not logged in", .{});
+ }
+ }
+ pub fn @"/"(self: Self) !void {
+ if (self.logged_in) |login| {
+ try write_timeline(self.res, self.txn, self.logged_in, login.user.following);
+ } else {
+ // TODO: generic home
+ try self.res.write("Homepage", .{});
+ }
+ }
+};
+// }}}
- if (std.crypto.pwhash.argon2.strVerify(hash.constSlice(), password, .{
- .allocator = alloc.allocator(),
- })) {
- return true;
- } else |err| {
- std.debug.print("verify error: {}\n", .{err});
+// POST {{{
+const POST = struct {
+ const Self = @This();
+
+ env: lmdb.Env,
+ req: http.Request,
+ res: *http.Response,
+ logged_in: ?Login,
+
+ pub fn handle(self: Self) !bool {
+ const ti = @typeInfo(Self);
+ inline for (ti.Struct.decls) |f_decl| {
+ if (std.mem.eql(u8, f_decl.name, self.req.target)) {
+ const f = @field(Self, f_decl.name);
+ const fi = @typeInfo(@TypeOf(f));
+ if (fi.Fn.params.len == 1) {
+ _ = try @call(.auto, f, .{self});
+ } else {
+ const args_type = fi.Fn.params[fi.Fn.params.len - 1].type.?;
+ const argsi = @typeInfo(args_type);
+ var args: args_type = undefined;
+ inline for (argsi.Struct.fields) |field| {
+ const str = self.req.get_value(field.name) orelse return error.ArgNotFound;
+ const field_ti = @typeInfo(field.type);
+ switch (field_ti) {
+ .Int => {
+ @field(args, field.name) = try std.fmt.parseUnsigned(field.type, str, 16);
+ },
+ .Enum => {
+ @field(args, field.name) = try parse_enum(field.type, str, 16);
+ },
+ else => {
+ @field(args, field.name) = str;
+ },
+ }
+ }
+ try @call(.auto, f, .{ self, args });
+ }
+ return true;
+ }
+ }
return false;
}
-}
-pub fn register_user(env: *lmdb.Env, username: []const u8, password: []const u8) !void {
- const username_array = try Username.fromSlice(username);
+ pub fn @"/register"(self: Self, args: struct { username: []const u8, password: []const u8 }) !void {
+ // TODO: handle args not supplied
+ std.debug.print("New user: {s} {s}\n", .{ args.username, args.password });
+ _ = try Chirp.register_user(self.env, args.username, args.password);
+ }
+ pub fn @"/login"(self: Self, args: struct { username: []const u8, password: []const u8 }) !void {
+ // TODO: handle args not supplied
+ std.debug.print("New login: {s} {s}\n", .{ args.username, args.password });
+ if (Chirp.login_user(self.env, args.username, args.password)) |session_token| {
+ self.res.status = .see_other;
+ try self.res.add_header(
+ "Set-Cookie",
+ .{ "session_token={x}; HttpOnly", .{session_token} },
+ );
+ } else |err| {
+ std.debug.print("login_user err: {}\n", .{err});
+ }
+ }
+ pub fn @"/logout"(self: Self) !void {
+ if (self.logged_in) |login| {
+ try Chirp.logout_user(self.env, login.session_token);
+
+ try self.res.add_header(
+ "Set-Cookie",
+ .{"session_token=deleted; Expires=Thu, 01 Jan 1970 00:00:00 GMT"},
+ );
+ }
+ }
+ pub fn @"/set_username"(self: Self, args: struct { username: []const u8 }) !void {
+ const login = self.logged_in orelse return error.NotLoggedIn;
+ const username = try Username.fromSlice(args.username);
- const txn = try env.txn();
- defer {
- txn.commit();
- env.sync();
+ const txn = try self.env.txn();
+ defer txn.commit() catch {};
+
+ const user_ids = try Db.user_ids(txn);
+
+ if (!try user_ids.has(username)) {
+ try user_ids.del(login.user.name);
+ try user_ids.put(username, login.user.id);
+
+ const users = try Db.users(txn);
+ var user = login.user;
+ user.name = username;
+ try users.put(login.user.id, user);
+ }
}
+ pub fn @"/set_display_name"(self: Self, args: struct { display_name: []const u8 }) !void {
+ const login = self.logged_in orelse return error.NotLoggedIn;
+ const display_name = try DisplayName.fromSlice(args.display_name);
- const users = try txn.dbi("users", Id, User);
- const user_id = Prng.gen_id(users);
- users.put(user_id, User{
- .username = username_array,
- .password_hash = try hash_password(password),
- });
+ const txn = try self.env.txn();
+ defer txn.commit() catch {};
- const user_ids = try txn.dbi("user_ids", Username, Id);
- user_ids.put(username_array, user_id);
-}
+ const users = try Db.users(txn);
+ var user = login.user;
+ user.display_name = display_name;
+ try users.put(login.user.id, user);
+ }
+ pub fn @"/set_password"(self: Self, args: struct { password: []const u8 }) !void {
+ const login = self.logged_in orelse return error.NotLoggedIn;
-pub fn login_user(env: *lmdb.Env, username: []const u8, password: []const u8) !SessionToken {
- const username_array = try Username.fromSlice(username);
+ const txn = try self.env.txn();
+ defer txn.commit() catch {};
- const txn = try env.txn();
- defer {
- txn.commit();
- env.sync();
+ const users = try Db.users(txn);
+ var user = login.user;
+ user.password_hash = try Chirp.hash_password(args.password);
+ try users.put(login.user.id, user);
}
+ pub fn @"/post"(self: Self) !void {
+ if (self.logged_in) |login| {
+ const text = self.req.get_value("text").?;
+ const has_referer = self.req.get_value("referer");
- const user_ids = try txn.dbi("user_ids", Username, Id);
- const user_id = user_ids.get(username_array) orelse return error.UnknownUsername;
- std.debug.print("id: {}\n", .{user_id});
+ try Chirp.post(self.env, login.user.id, text);
- const users = try txn.dbi("users", Id, User);
- if (users.get(user_id)) |user| {
- if (verify_password(password, user.password_hash)) {
- const sessions = try txn.dbi("sessions", Id, Id);
- const session_token = Prng.gen_id(sessions);
- sessions.put(session_token, user_id);
- return session_token;
- } else {
- return error.IncorrectPassword;
+ if (has_referer) |r| {
+ const decoded = try decode(r);
+ try self.res.redirect(decoded.constSlice());
+ }
}
- } else {
- return error.UserNotFound;
}
-}
+ pub fn @"/comment"(self: Self) !void {
+ if (self.logged_in) |login| {
+ const text = self.req.get_value("text") orelse return error.NoText;
+ const post_id_str = self.req.get_value("post_id") orelse return error.NoPostId;
+ const post_id = try parse_enum(PostId, post_id_str, 16);
-fn logout_user(env: *lmdb.Env, session_token: SessionToken) !void {
- const txn = try env.txn();
- defer {
- txn.commit();
- env.sync();
+ try Chirp.comment(self.env, login.user.id, post_id, text);
+ }
}
+ pub fn @"/quote"(self: Self) !void {
+ if (self.logged_in) |login| {
+ const text = self.req.get_value("text") orelse return error.NoText;
+ const post_id_str = self.req.get_value("post_id") orelse return error.NoPostId;
+ const has_referer = self.req.get_value("referer");
- const sessions = try txn.dbi("sessions", Id, Id);
- sessions.del(session_token);
-}
+ const post_id = try parse_enum(PostId, post_id_str, 16);
-fn get_session_user(env: *lmdb.Env, session_token: SessionToken) !User {
- const txn = try env.txn();
- defer txn.abort();
+ try Chirp.quote(self.env, login.user.id, post_id, text);
- const sessions = try txn.dbi("sessions", Id, Id);
- const users = try txn.dbi("users", Id, User);
+ if (has_referer) |r| {
+ const decoded = try decode(r);
+ try self.res.redirect(decoded.constSlice());
+ }
+ }
+ }
+ // TODO: add arguments instead of parsing manually
+ pub fn @"/create_list"(self: Self) !void {
+ if (self.logged_in) |login| {
+ const name_str = self.req.get_value("name") orelse return error.NoName;
+ const name = try Name.fromSlice(name_str);
+ // TODO: decode name
+
+ var txn = try self.env.txn();
+ const postlist = try PostList.init(txn);
+ try txn.commit();
+
+ txn = try self.env.txn();
+ var post_lists_view = try login.user.post_lists.open(txn);
+ _ = try post_lists_view.append(.{ .name = name, .list = postlist });
+ try txn.commit();
+ }
+ }
+ pub fn @"/delete_list"(self: Self, args: struct { list_id: PostList.Base.Index }) !void {
+ if (self.logged_in) |login| {
+ var post_list: ?PostList = null;
+ {
+ const txn = try self.env.txn();
+ defer txn.commit() catch {};
+ var post_lists_view = try login.user.post_lists.open(txn);
+ post_list = (try post_lists_view.get(args.list_id)).list;
+ try post_lists_view.del(args.list_id);
+ }
+ if (post_list != null) {
+ const txn = try self.env.txn();
+ defer txn.commit() catch {};
+ var list_view = try post_list.?.open(txn);
+ try list_view.clear();
+ }
+ }
+ }
+ pub fn @"/list_add"(self: Self, args: struct { list_id: PostList.Base.Index, post_id: PostId }) !void {
+ if (self.logged_in) |login| {
+ _ = login;
+
+ const txn = try self.env.txn();
+ defer txn.commit() catch {};
+
+ const post_list = PostList{ .base = .{ .idx = args.list_id } };
+ var post_list_view = try post_list.open(txn);
+ if (try post_list_view.has(args.post_id)) {
+ try post_list_view.del(args.post_id);
+ } else {
+ try post_list_view.append(args.post_id);
+ }
+ }
+ }
+ pub fn @"/create_feed"(self: Self) !void {
+ if (self.logged_in) |login| {
+ const name_str = self.req.get_value("name") orelse return error.NoName;
+ const name = try Name.fromSlice(name_str);
+
+ var txn = try self.env.txn();
+ const userlist = try UserList.init(txn);
+ try txn.commit();
+
+ txn = try self.env.txn();
+ var feeds_view = try login.user.feeds.open(txn);
+ _ = try feeds_view.append(.{ .name = name, .list = userlist });
+ try txn.commit();
+ }
+ }
+ pub fn @"/delete_feed"(self: Self, args: struct { list_id: UserList.Base.Index }) !void {
+ if (self.logged_in) |login| {
+ var user_list: ?UserList = null;
+
+ {
+ const txn = try self.env.txn();
+ defer txn.commit() catch {};
+ var feeds_view = try login.user.feeds.open(txn);
+ user_list = (try feeds_view.get(args.list_id)).list;
+ try feeds_view.del(args.list_id);
+ }
+ if (user_list != null) {
+ const txn = try self.env.txn();
+ defer txn.commit() catch {};
+ var list_view = try user_list.?.open(txn);
+ try list_view.clear();
+ }
+ }
+ }
+ pub fn @"/feed_add"(self: Self, args: struct { feed_id: UserList.Base.Index, user_id: UserId }) !void {
+ if (self.logged_in) |login| {
+ _ = login;
+
+ const txn = try self.env.txn();
+ defer txn.commit() catch {};
+
+ const user_list = UserList{ .base = .{ .idx = args.feed_id } };
+ var user_list_view = try user_list.open(txn);
+ if (try user_list_view.has(args.user_id)) {
+ try user_list_view.del(args.user_id);
+ } else {
+ try user_list_view.append(args.user_id);
+ }
+ }
+ }
+ pub fn @"/upvote"(self: Self) !void {
+ const login = self.logged_in orelse return error.NotLoggedIn;
- if (sessions.get(session_token)) |user_id| {
- return users.get(user_id) orelse error.UnknownUser;
- } else {
- return error.SessionNotFound;
+ const post_id_str = self.req.get_value("post_id") orelse return error.NoPostId;
+ const post_id: PostId = @enumFromInt(try std.fmt.parseUnsigned(u64, post_id_str, 16));
+
+ try Chirp.vote(self.env, post_id, login.user.id, .Up);
}
-}
+ pub fn @"/downvote"(self: Self) !void {
+ const login = self.logged_in orelse return error.NotLoggedIn;
+
+ const post_id_str = self.req.get_value("post_id") orelse return error.NoPostId;
+ const post_id: PostId = @enumFromInt(try std.fmt.parseUnsigned(u64, post_id_str, 16));
+
+ try Chirp.vote(self.env, post_id, login.user.id, .Down);
+ }
+ pub fn @"/follow"(self: Self) !void {
+ const login = self.logged_in orelse return error.NotLoggedIn;
+ const user_id_str = self.req.get_value("user_id") orelse return error.NoUserId;
+ const user_id: UserId = @enumFromInt(try std.fmt.parseUnsigned(u64, user_id_str, 16));
+
+ try Chirp.follow(self.env, login.user.id, user_id);
+ }
+ pub fn @"/quit"(self: Self) !void {
+ if (self.req.get_header("Referer")) |ref| {
+ try self.res.redirect(ref);
+ } else {
+ try self.res.redirect("/");
+ }
+ try self.res.send();
+ // break :accept;
+ }
+};
// }}}
-fn list_users(env: *lmdb.Env) !void {
+fn list_users(env: lmdb.Env) !void {
const txn = try env.txn();
defer txn.abort();
- const users = try txn.dbi("users", Id, User);
- var cursor = try users.cursor();
+ const users = try Db.users(txn);
+ var it = try users.iterator();
- 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);
+ while (it.next()) |kv| {
+ const key = kv.key;
+ const user = kv.val;
+ std.debug.print("[{}] {s}\n", .{ key, user.name.constSlice() });
}
}
-fn list_user_ids(env: *lmdb.Env) !void {
+fn list_user_ids(env: lmdb.Env) !void {
const txn = try env.txn();
defer txn.abort();
- const user_ids = try txn.dbi("user_ids", Username, Id);
- var cursor = try user_ids.cursor();
-
- var key: Username = undefined;
- var user_id_maybe = cursor.get(&key, .First);
+ const user_ids = try Db.user_ids(txn);
+ var it = try user_ids.iterator();
- while (user_id_maybe) |user_id| {
+ while (it.next()) |kv| {
+ const key = kv.key;
+ const user_id = kv.val;
std.debug.print("[{s}] {}\n", .{ key.constSlice(), user_id });
-
- user_id_maybe = cursor.get(&key, .Next);
}
}
-fn list_sessions(env: *lmdb.Env) !void {
+fn list_sessions(env: lmdb.Env) !void {
const txn = try env.txn();
defer txn.abort();
- const sessions = try txn.dbi("sessions", SessionToken, Id);
- var cursor = try sessions.cursor();
+ const sessions = try Db.sessions(txn);
+ var it = try sessions.iterator();
+
+ while (it.next()) |kv| {
+ const key = kv.key;
+ const user_id = kv.val;
+ std.debug.print("[{x}] {}\n", .{ key, user_id });
+ }
+}
- var key: SessionToken = undefined;
- var user_id_maybe = cursor.get(&key, .First);
+fn list_posts(env: lmdb.Env) !void {
+ const txn = try env.txn();
+ defer txn.abort();
- while (user_id_maybe) |user_id| {
- std.debug.print("[{}] {}\n", .{ key, user_id });
+ const posts = try Db.posts(txn);
+ var it = try posts.iterator();
- user_id_maybe = cursor.get(&key, .Next);
+ while (it.next()) |kv| {
+ const key = kv.key;
+ const post = kv.val;
+ std.debug.print("[{}] {s}\n", .{ key, post.text.constSlice() });
}
}
+const ReqBufferSize = 4096;
+const ResHeadBufferSize = 1024 * 64;
+const ResBodyBufferSize = 1024 * 64;
+
+// TODO: static?
+var req_buffer: [ReqBufferSize]u8 = undefined;
+var res_head_buffer: [ResHeadBufferSize]u8 = undefined;
+var res_body_buffer: [ResBodyBufferSize]u8 = undefined;
+
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
- var env = lmdb.Env.open("db", 1024 * 100);
+ var env = try lmdb.Env.open("db", 1024 * 1024 * 10);
defer env.close();
std.debug.print("Users:\n", .{});
- try list_users(&env);
+ try list_users(env);
std.debug.print("User IDs:\n", .{});
- try list_user_ids(&env);
+ try list_user_ids(env);
std.debug.print("Sessions:\n", .{});
- try list_sessions(&env);
-
- accept: while (true) {
- const conn = try server.accept();
-
- std.debug.print("new connection: {}\n", .{conn});
-
- var read_buffer: [1024]u8 = undefined;
- var http_server = std.http.Server.init(conn, &read_buffer);
+ try list_sessions(env);
+ std.debug.print("Posts:\n", .{});
+ try list_posts(env);
+
+ while (true) {
+ server.wait();
+ while (true) {
+ const req = (server.next_request(&req_buffer) catch break) orelse break;
+ handle_request(env, req) catch {
+ try handle_error(env, req);
+ };
+ }
+ }
+ // const ThreadCount = 1;
+ // var ts: [ThreadCount]std.Thread = undefined;
- while (http_server.state == .ready) {
- var req = http_server.receiveHead() catch continue;
+ // for (0..ThreadCount) |i| {
+ // ts[i] = try std.Thread.spawn(.{}, handle_connection, .{ &server, &env });
+ // }
+ // for (0..ThreadCount) |i| {
+ // ts[i].join();
+ // }
- std.debug.print("[{}]: {s}\n", .{ req.head.method, req.head.target });
+ std.debug.print("done\n", .{});
+}
- var logged_in: ?struct {
- user: User,
- session_token: SessionToken,
- } = null;
+fn handle_error(env: lmdb.Env, req: http.Request) !void {
+ _ = env;
+ var res = http.Response.init(req, &res_head_buffer, &res_body_buffer);
+ try write_start(&res);
+ try res.write("Oops, something went terribly wrong there D:", .{});
+ try write_end(&res);
+ try res.send();
+}
+fn handle_request(env: lmdb.Env, req: http.Request) !void {
+ // std.debug.print("[{}]: {s}\n", .{ req.method, req.target });
+ // std.debug.print("[{}]: {s}\n", .{ req.method, req.head.? });
+
+ // reponse
+ var res = http.Response.init(req, &res_head_buffer, &res_body_buffer);
+
+ // check session token
+ const logged_in: ?Login = try check_login(env, req, &res);
+
+ // html
+ if (req.method == .GET) {
+ try write_start(&res);
+ try write_header(&res, logged_in);
+
+ const txn = try env.txn();
+ defer txn.abort();
+
+ const get = GET{
+ .txn = txn,
+ .req = req,
+ .res = &res,
+ .logged_in = logged_in,
+ };
+ if (try get.handle()) {} else {
+ try res.redirect("/");
+ }
- 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| {
- logged_in = .{
- .user = user,
- .session_token = session_token,
- };
- } else |err| {
- std.debug.print("get_session_user err: {}\n", .{err});
- }
- // TODO: delete session token
- // TODO: add changeable headers (set, delete cookies)
- }
+ try write_end(&res);
+ try res.send();
+ }
+ // api
+ else {
+ const post = POST{
+ .env = env,
+ .req = req,
+ .res = &res,
+ .logged_in = logged_in,
+ };
+ if (try post.handle()) {} else {
+ try res.write("<p>[POST] {s}</p>", .{req.target});
+ }
- // html
- if (req.head.method == .GET) {
- if (std.mem.eql(u8, req.head.target, "/register")) {
- try req.respond(
- \\<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(
- \\<form action="/login" method="post">
- \\<input type="text" name="username" />
- \\<input type="password" name="password" />
- \\<input type="submit" value="Login" />
- \\</form>
- , .{});
- } else {
- if (logged_in) |login| {
- var response_buffer = try std.BoundedArray(u8, 1024).init(0);
- try std.fmt.format(response_buffer.writer(),
- \\<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(), .{});
- } else {
- try req.respond(
- \\<a href="/register">Register</a>
- \\<a href="/login">Login</a>
- \\<form action="/quit" method="post"><input type="submit" value="Quit" /></form>
- , .{});
- }
- }
- }
- // api
- else {
- if (std.mem.eql(u8, req.head.target, "/register")) {
- // TODO: handle args not supplied
- const username = get_value(&req, "username").?;
- const password = get_value(&req, "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")) {
- // TODO: handle args not supplied
- const username = get_value(&req, "username").?;
- const password = get_value(&req, "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 |err| {
- std.debug.print("login_user err: {}\n", .{err});
- try redirect(&req, "/login");
- }
- } else if (std.mem.eql(u8, req.head.target, "/logout")) {
- if (logged_in) |login| {
- try 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" },
- },
- });
- }
- } else if (std.mem.eql(u8, req.head.target, "/quit")) {
- try redirect(&req, "/");
- break :accept;
- } else {
- try req.respond(
- \\<p>POST</p>
- , .{});
- }
+ if (!res.has_header("Location")) {
+ if (req.get_header("Referer")) |ref| {
+ try res.redirect(ref);
+ } else {
+ try res.redirect("/");
}
}
+ try res.send();
}
}
projects / chirp / blobdiff