2022-07-13 03:40:48 +00:00
|
|
|
const std = @import("std");
|
2022-07-13 04:16:33 +00:00
|
|
|
const util = @import("util");
|
2022-07-13 03:40:48 +00:00
|
|
|
|
|
|
|
const db = @import("./db.zig");
|
|
|
|
|
2022-07-24 09:01:17 +00:00
|
|
|
const models = @import("./db/models.zig");
|
2022-07-18 07:37:10 +00:00
|
|
|
pub const DateTime = util.DateTime;
|
2022-07-13 04:16:33 +00:00
|
|
|
pub const Uuid = util.Uuid;
|
2022-07-13 03:40:48 +00:00
|
|
|
|
2022-07-22 04:19:08 +00:00
|
|
|
const PwHash = std.crypto.pwhash.scrypt;
|
|
|
|
const pw_hash_params = PwHash.Params.interactive;
|
|
|
|
const pw_hash_encoding = .phc;
|
|
|
|
const pw_hash_buf_size = 128;
|
|
|
|
|
2022-07-24 05:19:32 +00:00
|
|
|
const token_len = 20;
|
2022-07-25 00:04:44 +00:00
|
|
|
const token_str_len = std.base64.standard.Encoder.calcSize(token_len);
|
2022-07-24 05:19:32 +00:00
|
|
|
|
2022-07-27 05:02:09 +00:00
|
|
|
const invite_code_len = 16;
|
|
|
|
const invite_code_str_len = std.base64.url_safe.Encoder.calcSize(invite_code_len);
|
|
|
|
|
2022-07-16 18:44:46 +00:00
|
|
|
// Frees an api struct and its fields allocated from alloc
|
|
|
|
pub fn free(alloc: std.mem.Allocator, val: anytype) void {
|
2022-07-19 09:22:19 +00:00
|
|
|
switch (@typeInfo(@TypeOf(val))) {
|
|
|
|
.Pointer => |ptr_info| switch (ptr_info.size) {
|
|
|
|
.One => {
|
|
|
|
free(alloc, val.*);
|
|
|
|
alloc.destroy(val);
|
|
|
|
},
|
|
|
|
.Slice => {
|
|
|
|
for (val) |elem| free(alloc, elem);
|
|
|
|
alloc.free(val);
|
|
|
|
},
|
|
|
|
else => unreachable,
|
|
|
|
},
|
|
|
|
.Struct => inline for (std.meta.fields(@TypeOf(val))) |f| free(alloc, @field(val, f.name)),
|
|
|
|
.Array => for (val) |elem| free(alloc, elem),
|
|
|
|
.Optional => if (val) |opt| free(alloc, opt),
|
|
|
|
.Bool, .Int, .Float, .Enum => {},
|
|
|
|
else => unreachable,
|
2022-07-16 18:44:46 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2022-07-13 03:40:48 +00:00
|
|
|
pub fn CreateInfo(comptime T: type) type {
|
|
|
|
const t_fields = std.meta.fields(T);
|
|
|
|
var fields: [t_fields.len - 1]std.builtin.Type.StructField = undefined;
|
|
|
|
var count = 0;
|
|
|
|
|
|
|
|
inline for (t_fields) |f| {
|
|
|
|
if (std.mem.eql(u8, f.name, "id")) continue;
|
|
|
|
|
|
|
|
fields[count] = f;
|
|
|
|
count += 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return @Type(.{ .Struct = .{
|
|
|
|
.layout = .Auto,
|
|
|
|
.fields = &fields,
|
|
|
|
.decls = &[0]std.builtin.Type.Declaration{},
|
|
|
|
.is_tuple = false,
|
|
|
|
} });
|
|
|
|
}
|
|
|
|
|
2022-07-13 04:16:33 +00:00
|
|
|
fn reify(comptime T: type, id: Uuid, val: CreateInfo(T)) T {
|
2022-07-13 03:40:48 +00:00
|
|
|
var result: T = undefined;
|
|
|
|
result.id = id;
|
|
|
|
inline for (std.meta.fields(CreateInfo(T))) |f| {
|
|
|
|
@field(result, f.name) = @field(val, f.name);
|
|
|
|
}
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub const NoteCreateInfo = struct {
|
2022-07-18 06:11:42 +00:00
|
|
|
content: []const u8,
|
|
|
|
};
|
|
|
|
|
2022-07-22 04:19:08 +00:00
|
|
|
pub const RegistrationInfo = struct {
|
|
|
|
username: []const u8,
|
|
|
|
password: []const u8,
|
|
|
|
email: ?[]const u8,
|
2022-07-27 05:30:52 +00:00
|
|
|
invite_code: ?[]const u8,
|
2022-07-22 04:19:08 +00:00
|
|
|
};
|
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub const LoginResult = struct {
|
|
|
|
user_id: Uuid,
|
|
|
|
token: [token_str_len]u8,
|
|
|
|
issued_at: DateTime,
|
|
|
|
};
|
|
|
|
|
2022-07-27 06:03:27 +00:00
|
|
|
pub const InviteOptions = struct {
|
|
|
|
name: []const u8 = "",
|
|
|
|
max_uses: ?i64 = null,
|
|
|
|
lifetime: ?i64 = null, // unix seconds, TODO make a TimeSpan type
|
|
|
|
};
|
|
|
|
|
2022-07-25 00:18:25 +00:00
|
|
|
threadlocal var prng: std.rand.DefaultPrng = undefined;
|
|
|
|
|
|
|
|
pub fn initThreadPrng(seed: u64) void {
|
|
|
|
prng = std.rand.DefaultPrng.init(seed +% std.Thread.getCurrentId());
|
|
|
|
}
|
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub const ApiSource = struct {
|
2022-07-15 07:27:27 +00:00
|
|
|
db: db.Database,
|
2022-07-22 04:19:08 +00:00
|
|
|
internal_alloc: std.mem.Allocator,
|
2022-07-15 00:58:08 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub const Conn = ApiConn(db.Database);
|
|
|
|
|
|
|
|
pub fn init(alloc: std.mem.Allocator) !ApiSource {
|
|
|
|
return ApiSource{
|
2022-07-15 07:27:27 +00:00
|
|
|
.db = try db.Database.init(),
|
2022-07-22 04:19:08 +00:00
|
|
|
.internal_alloc = alloc,
|
2022-07-13 03:40:48 +00:00
|
|
|
};
|
2022-07-17 23:21:03 +00:00
|
|
|
}
|
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub fn connectUnauthorized(self: *ApiSource, alloc: std.mem.Allocator) !Conn {
|
|
|
|
return Conn{
|
|
|
|
.db = self.db,
|
|
|
|
.internal_alloc = self.internal_alloc,
|
|
|
|
.as_user = null,
|
|
|
|
.arena = std.heap.ArenaAllocator.init(alloc),
|
|
|
|
};
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn connectToken(self: *ApiSource, token: []const u8, alloc: std.mem.Allocator) !Conn {
|
2022-07-25 00:04:44 +00:00
|
|
|
const decoded_len = std.base64.standard.Decoder.calcSizeForSlice(token) catch return error.InvalidToken;
|
|
|
|
if (decoded_len != token_len) return error.InvalidToken;
|
2022-07-17 23:21:03 +00:00
|
|
|
|
2022-07-25 00:04:44 +00:00
|
|
|
var decoded: [token_len]u8 = undefined;
|
|
|
|
std.base64.standard.Decoder.decode(&decoded, token) catch return error.InvalidToken;
|
2022-07-17 23:21:03 +00:00
|
|
|
|
2022-07-25 00:04:44 +00:00
|
|
|
var hash: models.ByteArray(models.Token.hash_len) = undefined;
|
|
|
|
models.Token.HashFn.hash(&decoded, &hash.data, .{});
|
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
var arena = std.heap.ArenaAllocator.init(alloc);
|
2022-07-25 00:04:44 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
const db_token = (try self.db.getBy(models.Token, .hash, hash, arena.allocator())) orelse return error.InvalidToken;
|
2022-07-17 23:21:03 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
return Conn{
|
|
|
|
.db = self.db,
|
|
|
|
.internal_alloc = self.internal_alloc,
|
|
|
|
.as_user = db_token.user_id,
|
|
|
|
.arena = arena,
|
2022-07-17 23:21:03 +00:00
|
|
|
};
|
2022-07-13 03:40:48 +00:00
|
|
|
}
|
2022-07-26 02:07:05 +00:00
|
|
|
};
|
2022-07-13 03:40:48 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
fn ApiConn(comptime DbConn: type) type {
|
|
|
|
return struct {
|
|
|
|
const Self = @This();
|
2022-07-18 07:37:10 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
db: DbConn,
|
|
|
|
internal_alloc: std.mem.Allocator, // used *only* for large, internal buffers
|
|
|
|
as_user: ?Uuid,
|
|
|
|
arena: std.heap.ArenaAllocator,
|
2022-07-18 06:11:42 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub fn close(self: *Self) void {
|
|
|
|
self.arena.deinit();
|
|
|
|
}
|
2022-07-18 06:11:42 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
fn getAuthenticatedUser(self: *Self) !models.LocalUser {
|
|
|
|
if (self.as_user) |user_id| {
|
|
|
|
const local_user = try self.db.getBy(models.LocalUser, .id, user_id, self.arena.allocator());
|
|
|
|
if (local_user == null) return error.UserNotFound;
|
2022-07-13 05:35:39 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
return local_user.?;
|
|
|
|
} else {
|
|
|
|
return error.NotAuthenticated;
|
|
|
|
}
|
2022-07-16 19:30:47 +00:00
|
|
|
}
|
2022-07-13 04:56:47 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
fn getAuthenticatedActor(self: *Self) !models.Actor {
|
|
|
|
const user = try self.getAuthenticatedUser();
|
|
|
|
if (user.actor_id) |actor_id| {
|
|
|
|
const actor = try self.db.getBy(models.Actor, .id, actor_id, self.arena);
|
|
|
|
return actor.?;
|
|
|
|
} else {
|
|
|
|
return error.NoActor;
|
|
|
|
}
|
2022-07-22 04:19:08 +00:00
|
|
|
}
|
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub fn createNote(self: *Self, info: NoteCreateInfo) !models.Note {
|
|
|
|
const id = Uuid.randV4(prng.random());
|
|
|
|
const user = try self.getAuthenticatedUser();
|
2022-07-22 04:19:08 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
const note = models.Note{
|
|
|
|
.id = id,
|
|
|
|
.author_id = user.actor_id orelse return error.NotAuthorized,
|
|
|
|
.content = info.content,
|
2022-07-22 04:19:08 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
.created_at = DateTime.now(),
|
|
|
|
};
|
|
|
|
try self.db.insert(models.Note, note);
|
2022-07-22 04:19:08 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
return note;
|
|
|
|
}
|
2022-07-13 04:56:47 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub fn getNote(self: *Self, id: Uuid) !?models.Note {
|
|
|
|
return self.db.getBy(models.Note, .id, id, self.arena.allocator());
|
|
|
|
}
|
2022-07-24 05:19:32 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub fn getActor(self: *Self, id: Uuid) !?models.Actor {
|
|
|
|
return self.db.getBy(models.Actor, .id, id, self.arena.allocator());
|
|
|
|
}
|
2022-07-25 00:04:44 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub fn getActorByHandle(self: *Self, handle: []const u8) !?models.Actor {
|
|
|
|
return self.db.getBy(models.Actor, .handle, handle, self.arena.allocator());
|
|
|
|
}
|
2022-07-24 05:19:32 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub fn react(self: *Self, note_id: Uuid) !void {
|
|
|
|
const id = Uuid.randV4(prng.random());
|
|
|
|
const user = try self.getAuthenticatedUser();
|
|
|
|
try self.db.insert(models.Reaction, .{ .id = id, .note_id = note_id, .reactor_id = user.actor_id orelse return error.NotAuthorized, .created_at = DateTime.now() });
|
|
|
|
}
|
2022-07-24 05:19:32 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub fn listReacts(self: *Self, note_id: Uuid) ![]models.Reaction {
|
|
|
|
return try self.db.getWhereEq(models.Reaction, .note_id, note_id, self.arena.allocator());
|
|
|
|
}
|
2022-07-13 04:56:47 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub fn register(self: *Self, info: RegistrationInfo) !models.Actor {
|
|
|
|
const actor_id = Uuid.randV4(prng.random());
|
|
|
|
const user_id = Uuid.randV4(prng.random());
|
2022-07-27 05:30:52 +00:00
|
|
|
// TODO: lock for transaction
|
2022-07-26 02:07:05 +00:00
|
|
|
|
|
|
|
if (try self.db.existsWhereEq(models.LocalUser, .username, info.username)) {
|
|
|
|
return error.UsernameUnavailable;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (try self.db.existsWhereEq(models.Actor, .handle, info.username)) {
|
|
|
|
return error.InconsistentDb;
|
|
|
|
}
|
|
|
|
|
2022-07-27 05:30:52 +00:00
|
|
|
const now = DateTime.now();
|
|
|
|
const invite_id = if (info.invite_code) |invite_code| blk: {
|
|
|
|
const invite = (try self.db.getBy(models.Invite, .invite_code, invite_code, self.arena.allocator())) orelse return error.InvalidInvite;
|
2022-07-27 06:03:27 +00:00
|
|
|
const uses = try self.db.countWhereEq(models.LocalUser, .invite_id, invite.id);
|
|
|
|
const uses_left = if (invite.max_uses) |max_uses| uses < max_uses else true;
|
2022-07-27 05:30:52 +00:00
|
|
|
const expired = if (invite.expires_at) |expires_at| now.seconds_since_epoch > expires_at.seconds_since_epoch else false;
|
|
|
|
|
|
|
|
if (!uses_left or expired) return error.InvalidInvite;
|
|
|
|
// TODO: increment uses
|
|
|
|
break :blk invite.id;
|
|
|
|
} else null;
|
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
// use internal alloc because necessary buffer is *big*
|
|
|
|
var buf: [pw_hash_buf_size]u8 = undefined;
|
|
|
|
const hash = try PwHash.strHash(info.password, .{ .allocator = self.internal_alloc, .params = pw_hash_params, .encoding = pw_hash_encoding }, &buf);
|
|
|
|
|
|
|
|
const actor = models.Actor{
|
|
|
|
.id = actor_id,
|
|
|
|
.handle = info.username,
|
|
|
|
.created_at = now,
|
|
|
|
};
|
|
|
|
const user = models.LocalUser{
|
|
|
|
.id = user_id,
|
|
|
|
.actor_id = actor_id,
|
|
|
|
.username = info.username,
|
|
|
|
.email = info.email,
|
2022-07-27 05:30:52 +00:00
|
|
|
.invite_id = invite_id,
|
2022-07-26 02:07:05 +00:00
|
|
|
.hashed_password = hash,
|
|
|
|
.password_changed_at = now,
|
|
|
|
.created_at = now,
|
|
|
|
};
|
|
|
|
try self.db.insert(models.Actor, actor);
|
|
|
|
try self.db.insert(models.LocalUser, user);
|
|
|
|
|
|
|
|
return actor;
|
|
|
|
}
|
2022-07-16 18:41:09 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
pub fn login(self: *Self, username: []const u8, password: []const u8) !LoginResult {
|
|
|
|
// TODO: This gives away the existence of a user through a timing side channel. is that acceptable?
|
|
|
|
const user_info = (try self.db.getBy(models.LocalUser, .username, username, self.arena.allocator())) orelse return error.InvalidLogin;
|
|
|
|
//defer free(self.arena.allocator(), user_info);
|
2022-07-19 07:07:01 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
const Hash = std.crypto.pwhash.scrypt;
|
|
|
|
Hash.strVerify(user_info.hashed_password, password, .{ .allocator = self.internal_alloc }) catch |err| switch (err) {
|
|
|
|
error.PasswordVerificationFailed => return error.InvalidLogin,
|
|
|
|
else => return err,
|
|
|
|
};
|
2022-07-21 05:26:13 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
const token = try self.createToken(user_info);
|
2022-07-19 07:07:01 +00:00
|
|
|
|
2022-07-26 02:07:05 +00:00
|
|
|
var token_enc: [token_str_len]u8 = undefined;
|
|
|
|
_ = std.base64.standard.Encoder.encode(&token_enc, &token.value);
|
|
|
|
|
|
|
|
return LoginResult{
|
|
|
|
.user_id = user_info.id,
|
|
|
|
.token = token_enc,
|
|
|
|
.issued_at = token.info.issued_at,
|
|
|
|
};
|
|
|
|
}
|
|
|
|
|
|
|
|
const TokenResult = struct {
|
|
|
|
info: models.Token,
|
|
|
|
value: [token_len]u8,
|
|
|
|
};
|
|
|
|
fn createToken(self: *Self, user: models.LocalUser) !TokenResult {
|
|
|
|
var token: [token_len]u8 = undefined;
|
|
|
|
std.crypto.random.bytes(&token);
|
|
|
|
|
|
|
|
var hash: [models.Token.hash_len]u8 = undefined;
|
|
|
|
models.Token.HashFn.hash(&token, &hash, .{});
|
|
|
|
|
|
|
|
const db_token = models.Token{
|
|
|
|
.id = Uuid.randV4(prng.random()),
|
|
|
|
.hash = .{ .data = hash },
|
|
|
|
.user_id = user.id,
|
|
|
|
.issued_at = DateTime.now(),
|
|
|
|
};
|
|
|
|
|
|
|
|
try self.db.insert(models.Token, db_token);
|
|
|
|
return TokenResult{
|
|
|
|
.info = db_token,
|
|
|
|
.value = token,
|
|
|
|
};
|
|
|
|
}
|
2022-07-27 05:02:09 +00:00
|
|
|
|
|
|
|
pub fn createInvite(self: *Self, options: InviteOptions) !models.Invite {
|
|
|
|
const id = Uuid.randV4(prng.random());
|
|
|
|
|
|
|
|
const user_id = (try self.getAuthenticatedUser()).id;
|
|
|
|
|
|
|
|
var code: [invite_code_len]u8 = undefined;
|
|
|
|
std.crypto.random.bytes(&code);
|
|
|
|
|
|
|
|
var code_str = try self.arena.allocator().alloc(u8, invite_code_str_len);
|
|
|
|
_ = std.base64.url_safe.Encoder.encode(code_str, &code);
|
|
|
|
|
|
|
|
const now = DateTime.now();
|
|
|
|
const expires_at = if (options.lifetime) |lifetime| DateTime{
|
|
|
|
.seconds_since_epoch = lifetime + now.seconds_since_epoch,
|
|
|
|
} else null;
|
|
|
|
|
|
|
|
const invite = models.Invite{
|
|
|
|
.id = id,
|
|
|
|
|
|
|
|
.name = try self.arena.allocator().dupe(u8, options.name),
|
|
|
|
.created_by = user_id,
|
|
|
|
.invite_code = code_str,
|
|
|
|
|
|
|
|
.max_uses = options.max_uses,
|
|
|
|
|
|
|
|
.created_at = now,
|
|
|
|
.expires_at = expires_at,
|
|
|
|
};
|
|
|
|
|
|
|
|
try self.db.insert(models.Invite, invite);
|
|
|
|
|
|
|
|
return invite;
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn getInvite(self: *Self, id: Uuid) !?models.Invite {
|
|
|
|
return self.db.getBy(models.Invite, .id, id, self.arena.allocator());
|
|
|
|
}
|
2022-07-26 02:07:05 +00:00
|
|
|
};
|
|
|
|
}
|