From d5911b021a544693d2a6a34a6f2acc7023b6de77 Mon Sep 17 00:00:00 2001 From: Tom Hughes Date: Tue, 8 Nov 2022 22:50:52 +0000 Subject: [PATCH] Extend systemd_service with support for a default sandbox --- cookbooks/systemd/resources/service.rb | 39 ++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/cookbooks/systemd/resources/service.rb b/cookbooks/systemd/resources/service.rb index ae09b7b7d..313c80c11 100644 --- a/cookbooks/systemd/resources/service.rb +++ b/cookbooks/systemd/resources/service.rb @@ -100,6 +100,7 @@ property :io_scheduling_class, [Integer, String] property :io_scheduling_priority, Integer property :kill_mode, String, :is => %w[control-group process mixed none] +property :sandbox, [true, false, Hash] action :create do service_variables = new_resource.to_hash @@ -108,6 +109,40 @@ action :create do service_variables[:type] ||= "simple" end + if new_resource.sandbox + service_variables[:protect_proc] = "invisible" unless property_is_set?(:protect_proc) + service_variables[:proc_subset] = "pid" unless property_is_set?(:proc_subset) + service_variables[:capability_bounding_set] = [] unless property_is_set?(:capability_bounding_set) + service_variables[:no_new_privileges] = true unless property_is_set?(:no_new_privileges) + service_variables[:protect_system] = "strict" unless property_is_set?(:protect_system) + service_variables[:protect_home] = true unless property_is_set?(:protect_home) + service_variables[:private_tmp] = true unless property_is_set?(:private_tmp) + service_variables[:private_devices] = true unless property_is_set?(:private_devices) + service_variables[:private_network] = true unless property_is_set?(:private_network) + service_variables[:private_ipc] = true unless property_is_set?(:private_ipc) + service_variables[:private_users] = true unless property_is_set?(:private_users) + service_variables[:protect_hostname] = true unless property_is_set?(:protect_hostname) + service_variables[:protect_clock] = true unless property_is_set?(:protect_clock) + service_variables[:protect_kernel_tunables] = true unless property_is_set?(:protect_kernel_tunables) + service_variables[:protect_kernel_modules] = true unless property_is_set?(:protect_kernel_modules) + service_variables[:protect_kernel_logs] = true unless property_is_set?(:protect_kernel_logs) + service_variables[:protect_control_groups] = true unless property_is_set?(:protect_control_groups) + service_variables[:restrict_address_families] = "none" unless property_is_set?(:restrict_address_families) + service_variables[:restrict_namespaces] = true unless property_is_set?(:restrict_namespaces) + service_variables[:lock_personality] = true unless property_is_set?(:lock_personality) + service_variables[:memory_deny_write_execute] = true unless property_is_set?(:memory_deny_write_execute) + service_variables[:restrict_realtime] = true unless property_is_set?(:restrict_realtime) + service_variables[:restrict_suid_sgid] = true unless property_is_set?(:restrict_suid_sgid) + service_variables[:remove_ipc] = true unless property_is_set?(:remove_ipc) + service_variables[:system_call_filter] = "@system-service" unless property_is_set?(:system_call_filter) + service_variables[:system_call_architectures] = "native" unless property_is_set?(:system_call_architectures) + + if sandbox_option(:enable_network) + service_variables[:private_network] = false + service_variables[:restrict_address_families] = Array(service_variables[:restrict_address_families]).append("AF_INET", "AF_INET6").reject { |f| f == "none" } + end + end + if new_resource.environment_file.is_a?(Hash) template "/etc/default/#{new_resource.service}" do cookbook "systemd" @@ -167,6 +202,10 @@ action :delete do end action_class do + def sandbox_option(option) + new_resource.sandbox[option] if new_resource.sandbox.is_a?(Hash) + end + def dropin_directory "/etc/systemd/system/#{new_resource.service}.service.d" end -- 2.43.2