╭─────────────╮ │scroll to top│ ╰─────────────╯ ╭ serve_ssh.zig ────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
🬐 🬠 🬞🬂🬏 🬟 🬑 🬟 🬑 ╭master╮ master haxy: 🬋🬋🬋 🬋🬋🬋 🬋 🬋 │files │ commits refs discuss issues patches new login 🬐 🬠 🬐 🬠 🬑 🬟 🬰 ╰──────╯ (716) user
╭ find file ─ ─ ─ ─ ─ ─ ─ ─ ─ ─╮ ╭────╮ ╭ clone ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─╮ │ │ │http│ ssh │ │ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─╯ ╰────╯ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─╯
.. embed/ event/ test/ ui/ command.zig diff3.zig event.zig find.zig fork.zig lib.zig main.zig main_wasm.zig markdown.zig notify.zig patch.zig progress.zig push.zig search.zig search_commit.zig search_thread.zig serve.zig serve_common.zig serve_http.zig ╭─────────────────────────────────╮ │serve_ssh.zig │ ╰─────────────────────────────────╯ serve_ssh_protocol.zig test.zig testnet.zig try.zig ui.zig web.zig
621 }; 622 // any key may fetch a public repo; a push always needs a key holder 623 if (service == .upload_pack and repo.role != null) return .{ .allowed = .fetch }; 624 625 // a key can be shared, so the push acts as the holder with the highest role 626 const owner_id = try evt.parseEventId(&repo.repo.event.user_id); 627 var best: ?struct { id: [evt.event_id_size]u8, role: evt.Repo.Role } = null; 628 for (try evt.User.readIdsByFingerprint(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, fingerprint)) |holder_id| { 629 const seen = (try evt.readRepoById(io, allocator, arena, users_dir, &owner_id, &repo.event_id, holder_id)) orelse return .not_found; 630 const role = seen.role orelse continue; 631 if (best) |held| if (held.role.atLeast(role)) continue; 632 best = .{ .id = holder_id, .role = role }; 633 } 634 const holder = best orelse return .denied; 635 if (!holder.role.atLeast(min_role)) return .denied; 636 return .{ 637 .allowed = switch (service) { 638 .upload_pack => .fetch, 639 .receive_pack => blk: { 640 const names = try repo.repo.event.protectedBranchNames(arena.allocator()); 641 // members change protected branches only by merging a patch 642 const owner = holder.role == .owner; 643 break :blk .{ .push = .{ 644 .user_id = holder.id, 645 .author = try commitAuthor(moment, arena, &holder.id), 646 .protected_branches = if (owner) names else &.{}, 647 .locked_branches = if (owner) &.{} else names, 648 .owner = owner, 649 } }; 650 }, 651 }, 652 }; 653 } 654 655 // an active user as a commit author 656 fn commitAuthor( 657 moment: evt.AdminDB.HashMap(.read_only), 658 arena: *std.heap.ArenaAllocator, 659 user_id: *const [evt.event_id_size]u8, 660 ) !evt.CommitAuthor { 661 const user = (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, user_id)) orelse unreachable; 662 return .{ .name = user.event.name, .email = user.event.email }; 663 } 664 665 // the authorized_keys line of a pubkey blob: its type, then the blob in base64 666 fn authorizedKeyLine(allocator: std.mem.Allocator, blob: []const u8) ![]const u8 { 667 var reader = std.Io.Reader.fixed(blob); 668 const key_type = try ssh.takeString(&reader, 64); 669 const encoder = std.base64.standard.Encoder; 670 const line = try allocator.alloc(u8, key_type.len + 1 + encoder.calcSize(blob.len)); 671 @memcpy(line[0..key_type.len], key_type); 672 line[key_type.len] = ' '; 673 _ = encoder.encode(line[key_type.len + 1 ..], blob); 674 return line; 675 } 676 677 fn writeError(sess: *ssh.SessionCtx, comptime msg: []const u8) !void { 678 const body = "ERR haxy ssh: " ++ msg; 679 var packet: [body.len + 4]u8 = undefined; 680 const line = try std.fmt.bufPrint(&packet, "{x:0>4}{s}", .{ packet.len, body }); 681 try sess.writeBytes(line); 682 try sess.exit(1); 683 } 684 685 test "parseGitCommand rejects malformed input" { 686 const allocator = std.testing.allocator; 687 try std.testing.expectError(error.InvalidCommand, parseGitCommand(allocator, "git-upload-pack")); 688 try std.testing.expectError(error.UnsupportedService, parseGitCommand(allocator, "ls -la")); 689 try std.testing.expectError(error.UnsupportedService, parseGitCommand(allocator, "git-fake-pack 'repo'")); 690 } 691 692 test "parseGitCommand happy paths" { 693 const allocator = std.testing.allocator; 694 695 { 696 const parsed = try parseGitCommand(allocator, "git-upload-pack 'some-repo'"); 697 defer parsed.deinit(allocator); 698 try std.testing.expectEqual(GitService.upload_pack, parsed.service); 699 try std.testing.expectEqualStrings("some-repo", parsed.dir); 700 } 701 { 702 const parsed = try parseGitCommand(allocator, "git-receive-pack 'user/proj'"); 703 defer parsed.deinit(allocator); 704 try std.testing.expectEqual(GitService.receive_pack, parsed.service); 705 try std.testing.expectEqualStrings("user/proj", parsed.dir); 706 } 707 { 708 const parsed = try parseGitCommand(allocator, "git-upload-pack repo"); 709 defer parsed.deinit(allocator); 710 try std.testing.expectEqual(GitService.upload_pack, parsed.service); 711 try std.testing.expectEqualStrings("repo", parsed.dir); 712 } 713 } 714