[PATCH] latest iteration of certbot policy

[Russell Coker <russell@coker.com.au>]

I think I've addressed all issues raised in the past.

Signed-off-by: Russell Coker <russell@coker.com.au>

policy_module(certbot, 1.0.0)

########################################
#
# Declarations
#

type certbot_t;
type certbot_exec_t;
init_daemon_domain(certbot_t, certbot_exec_t)

type certbot_log_t;
logging_log_file(certbot_log_t)

type certbot_runtime_t alias certbot_var_run_t;
files_runtime_file(certbot_runtime_t)

type certbot_tmp_t;
files_tmp_file(certbot_tmp_t)

type certbot_tmpfs_t;
files_tmpfs_file(certbot_tmpfs_t)

type certbot_lib_t alias certbot_var_lib_t;
files_type(certbot_lib_t)

########################################
#
# Local policy
#

allow certbot_t self:fifo_file { getattr ioctl read write };
allow certbot_t self:capability { chown dac_override sys_resource };
allow certbot_t self:udp_socket all_udp_socket_perms;
allow certbot_t self:tcp_socket all_tcp_socket_perms;
allow certbot_t self:netlink_route_socket create_netlink_socket_perms;

files_search_var_lib(certbot_t)
manage_dirs_pattern(certbot_t, certbot_lib_t, certbot_lib_t)
manage_files_pattern(certbot_t, certbot_lib_t, certbot_lib_t)

manage_files_pattern(certbot_t, certbot_tmp_t, certbot_tmp_t)
files_tmp_filetrans(certbot_t, certbot_tmp_t, { file })

manage_files_pattern(certbot_t, certbot_tmpfs_t, certbot_tmpfs_t)
fs_tmpfs_filetrans(certbot_t, certbot_tmpfs_t, { file })

# this is for certbot to have write-exec memory, I know it is bad
# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=913544
# the Debian bug report has background about python-acme and python3-openssl
allow certbot_t self:process execmem;
allow certbot_t certbot_tmp_t:file { map execute };
allow certbot_t certbot_tmpfs_t:file { map execute };
allow certbot_t certbot_runtime_t:file { map execute };

logging_search_logs(certbot_t)
allow certbot_t certbot_log_t:dir manage_dir_perms;
allow certbot_t certbot_log_t:file manage_file_perms;

manage_files_pattern(certbot_t, certbot_runtime_t, certbot_runtime_t)
files_runtime_filetrans(certbot_t, certbot_runtime_t, file)

kernel_search_fs_sysctls(certbot_t)

corecmd_list_bin(certbot_t)
corecmd_mmap_bin_files(certbot_t)

corenet_tcp_bind_generic_node(certbot_t)
corenet_tcp_connect_http_port(certbot_t)
corenet_tcp_connect_dns_port(certbot_t)

# bind to http port for standalone mode
corenet_tcp_bind_http_port(certbot_t)

domain_use_interactive_fds(certbot_t)
files_read_etc_files(certbot_t)
files_read_usr_files(certbot_t)

libs_exec_ldconfig(certbot_t)
# for /usr/lib/gcc/x86_64-linux-gnu/8/collect2
libs_exec_lib_files(certbot_t)

miscfiles_read_localization(certbot_t)

miscfiles_read_generic_certs(certbot_t)
miscfiles_manage_generic_tls_privkey_dirs(certbot_t)
miscfiles_manage_generic_tls_privkey_files(certbot_t)
miscfiles_manage_generic_tls_privkey_lnk_files(certbot_t)

sysnet_read_config(certbot_t)

userdom_dontaudit_search_user_home_dirs(certbot_t)
userdom_use_user_ptys(certbot_t)

optional_policy(`
	# for writing to webroot
	apache_manage_sys_content(certbot_t)

	apache_search_config(certbot_t)
')