HAXY

▄▀▄ ▄▀▀▀▀▄ ▀ ▄▄▀▀▀▀▀▀▄ ▀ ▀ ▀▀▀▀▀▀▀▄▀▄ ▄▄ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀ ▄▀▄ ▀▀▄ ▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▄ ▀▀▀ ▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄ ▀▀▀▀ ▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▄▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▄▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀ ▄▀▀▀▀▀▀▀▄▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▄▄▄▄▄▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▄▄ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀ ▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▄▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀ ▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▄▀▀▀ ▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▄▀▀ ▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▄▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀ ▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▄▀▀ ▀▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ ▄▀▀▀▀▀▀▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▄ ▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▄▀▄ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀ ▄▄▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▀▀▀▀▄

╭ changed ─╮ │src/ui.zig│ ╰──────────╯ ╭───────────╮ │← all files│ ╰───────────╯ ╭──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮ │1708 defer any_repo.deinit(io, allocator); │ │1709 break :blk switch (any_repo) { │ │1710 inline else => |*repo| (try repo.readRef(io, .{ .kind = .head, .name = branch })) != null, │ │1711 + }; │ │1712 + }, │ │1713 + }; │ │1714 + } │ │1715 + │ │1716 + // whether the actor may change the event `id` names │ │1717 + pub fn canModify( │ │1718 + self: RepoSource, │ │1719 + io: std.Io, │ │1720 + allocator: std.mem.Allocator, │ │1721 + actor: Actor, │ │1722 + kind: evt.EventKind, │ │1723 + id: *const [evt.event_id_size]u8, │ │1724 + ) !bool { │ │1725 + // a role that may change an event with no author needs no read │ │1726 + if (actor.role.canModify(actor.author.email, null)) return true; │ │1727 + │ │1728 + var arena = std.heap.ArenaAllocator.init(allocator); │ │1729 + defer arena.deinit(); │ │1730 + return switch (self.repo_kind) { │ │1731 + inline else => |repo_kind| blk: { │ │1732 + var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, self.localInitOpts()); │ │1733 + defer any_repo.deinit(io, allocator); │ │1734 + break :blk switch (any_repo) { │ │1735 + inline else => |*repo| actor.role.canModify(actor.author.email, try evt.readAuthorEmail(repo_kind, repo.self_repo_opts, io, allocator, &arena, repo, kind, id)),│ │1736 }; │ │1737 }, │ │1738 }; │ ╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯ ╭────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮ │1739 } │ │1740 +}; │ │1741 + │ │1742 +// who a write acts as and the role they hold in its repo │ │1743 +pub const Actor = struct { │ │1744 + author: evt.CommitAuthor, │ │1745 + // local mode has no accounts, so it has no user id │ │1746 + user_id: ?[evt.event_id_size]u8 = null, │ │1747 + role: evt.Repo.Role, │ │1748 }; │ │1749 + │ │1750 +pub const Authorization = union(enum) { │ │1751 + actor: Actor, │ │1752 + login_required, │ │1753 + repo_not_found, │ │1754 + forbidden, │ │1755 +}; │ │1756 + │ │1757 +// whether the user may write to the repo `identity` names with at least │ │1758 +// `min_role` │ │1759 +pub fn authorizeUser( │ │1760 + moment: evt.AdminDB.HashMap(.read_only), │ │1761 + arena: *std.heap.ArenaAllocator, │ │1762 + user_id: [evt.event_id_size]u8, │ │1763 + identity: []const u8, │ │1764 + min_role: evt.Repo.Role, │ │1765 +) !Authorization { │ │1766 + const user = (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, &user_id)) orelse return .login_required; │ │1767 + // a removed account's open sessions stop writing │ │1768 + if (user.removed) return .login_required; │ │1769 + const owner_repo = evt.parseOwnerRepoPath(identity) orelse return .repo_not_found; │ │1770 + const repo = (try evt.Repo.readByOwnerAndName(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, owner_repo.owner, owner_repo.name)) orelse return .repo_not_found;│ │1771 │ │1772 + const role = evt.Repo.roleOf(repo.repo, user_id); │ │1773 + if (!role.atLeast(min_role)) return .forbidden; │ │1774 + return .{ .actor = .{ │ │1775 + .author = .{ .name = user.event.name, .email = user.event.email }, │ │1776 + .user_id = user_id, │ │1777 + .role = role, │ │1778 + } }; │ │1779 +} │ │1780 + │ │1781 // events created in local mode have no account behind them, so the commit │ │1782 // author comes from the repo's config, which the global config feeds into. │ │1783 pub const local_author_fallback = evt.CommitAuthor{ .name = "haxy", .email = "user@haxy" }; │ ╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯ ╭───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮ │1997 self.data.form_feedback = null; │ │1998 } │ │1999 │ │1936 - // the commit author for an event this session creates, or null when it may │ │1937 - // not create one │ │1938 - pub fn eventAuthor(self: *Self) !?evt.CommitAuthor { │ │2000 + // the actor for a write to the repo `identity` names, or null when the │ │2001 + // session may not write there with at least `min_role`. local mode always │ │2002 + // writes. │ │2003 + pub fn authorize(self: *Self, identity: []const u8, min_role: evt.Repo.Role) !?Actor { │ │2004 if (self.data.host_kind == .local) { │ │1940 - const src = self.local orelse return local_author_fallback; │ │1941 - const io = self.io orelse return local_author_fallback; │ │1942 - return try localAuthor(src, io, self.page_arena.child_allocator, self.page_arena); │ │2005 + const author = blk: { │ │2006 + const src = self.local orelse break :blk local_author_fallback; │ │2007 + const io = self.io orelse break :blk local_author_fallback; │ │2008 + break :blk try localAuthor(src, io, self.page_arena.child_allocator, self.page_arena); │ │2009 + }; │ │2010 + return .{ .author = author, .role = .owner }; │ │2011 } │ │1944 - const user_id = self.data.user_id orelse return null; │ │1945 - const moment = self.haxy_moment orelse return null; │ │1946 - const user = (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, self.page_arena, user_id)) orelse return null;│ │1947 - return .{ .name = user.event.name, .email = user.event.email }; │ │2012 + const user_id = self.userId() orelse return null; │ │2013 + // the session's moment predates this input, so read the roles afresh │ │2014 + const admin_repo = self.admin_repo orelse return null; │ │2015 + const moment = try evt.currentMoment(evt.admin_repo_opts, admin_repo); │ │2016 + return switch (try authorizeUser(moment, self.page_arena, user_id, identity, min_role)) { │ │2017 + .actor => |actor| actor, │ │2018 + .login_required, .repo_not_found, .forbidden => null, │ │2019 + }; │ │2020 } │ │2021 │ │2022 // queue an action for the host to drain this frame. │ ╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯