policy_module(amavis, 1.7.0)

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

type amavis_t;
type amavis_exec_t;
domain_type(amavis_t)
init_daemon_domain(amavis_t, amavis_exec_t)

# configuration files
type amavis_etc_t;
files_type(amavis_etc_t)

# pid files
type amavis_var_run_t;
files_pid_file(amavis_var_run_t)

# var/lib files
type amavis_var_lib_t;
files_type(amavis_var_lib_t)

# log files
type amavis_var_log_t;
logging_log_file(amavis_var_log_t)

# tmp files
type amavis_tmp_t;
files_tmp_file(amavis_tmp_t)

# virus quarantine
type amavis_quarantine_t;
files_type(amavis_quarantine_t)

type amavis_spool_t;
files_type(amavis_spool_t)

########################################
#
# amavis local policy
#

allow amavis_t self:capability { kill chown dac_override setgid setuid };
dontaudit amavis_t self:capability sys_tty_config;
allow amavis_t self:process { signal sigchld signull };
allow amavis_t self:fifo_file rw_fifo_file_perms;
allow amavis_t self:unix_stream_socket create_stream_socket_perms;
allow amavis_t self:unix_dgram_socket create_socket_perms;
allow amavis_t self:tcp_socket { listen accept };
allow amavis_t self:netlink_route_socket r_netlink_socket_perms;

# configuration files
allow amavis_t amavis_etc_t:dir list_dir_perms;
read_files_pattern(amavis_t, amavis_etc_t, amavis_etc_t)
read_lnk_files_pattern(amavis_t, amavis_etc_t, amavis_etc_t)

# mail quarantine
manage_dirs_pattern(amavis_t, amavis_quarantine_t, amavis_quarantine_t)
manage_files_pattern(amavis_t, amavis_quarantine_t, amavis_quarantine_t)
manage_sock_files_pattern(amavis_t, amavis_quarantine_t, amavis_quarantine_t)

# Spool Files
manage_dirs_pattern(amavis_t, amavis_spool_t, amavis_spool_t)
manage_files_pattern(amavis_t, amavis_spool_t, amavis_spool_t)
manage_lnk_files_pattern(amavis_t, amavis_spool_t, amavis_spool_t)
manage_sock_files_pattern(amavis_t, amavis_spool_t, amavis_spool_t)
filetrans_pattern(amavis_t, amavis_spool_t, amavis_var_run_t, sock_file)
files_search_spool(amavis_t)

# tmp files
manage_files_pattern(amavis_t, amavis_tmp_t, amavis_tmp_t)
allow amavis_t amavis_tmp_t:dir setattr;
files_tmp_filetrans(amavis_t,amavis_tmp_t,file)

# var/lib files for amavis
manage_dirs_pattern(amavis_t, amavis_var_lib_t, amavis_var_lib_t)
manage_files_pattern(amavis_t, amavis_var_lib_t, amavis_var_lib_t)
manage_sock_files_pattern(amavis_t, amavis_var_lib_t, amavis_var_lib_t)
files_search_var_lib(amavis_t)

# log files
allow amavis_t amavis_var_log_t:dir setattr;
manage_files_pattern(amavis_t, amavis_var_log_t, amavis_var_log_t)
manage_sock_files_pattern(amavis_t, amavis_var_log_t, amavis_var_log_t)
logging_log_filetrans(amavis_t, amavis_var_log_t, { sock_file file dir })

# pid file
manage_files_pattern(amavis_t, amavis_var_run_t, amavis_var_run_t)
manage_sock_files_pattern(amavis_t, amavis_var_run_t, amavis_var_run_t)
files_pid_filetrans(amavis_t, amavis_var_run_t, { file sock_file })

kernel_read_kernel_sysctls(amavis_t)
# amavis tries to access /proc/self/stat, /etc/shadow and /root - perl...
kernel_dontaudit_list_proc(amavis_t)
kernel_dontaudit_read_proc_symlinks(amavis_t)
kernel_dontaudit_read_system_state(amavis_t)

# find perl
corecmd_exec_bin(amavis_t)

corenet_all_recvfrom_unlabeled(amavis_t)
corenet_all_recvfrom_netlabel(amavis_t)
corenet_tcp_sendrecv_all_if(amavis_t)
corenet_tcp_sendrecv_all_nodes(amavis_t)
corenet_tcp_bind_all_nodes(amavis_t)
corenet_udp_bind_all_nodes(amavis_t)
# amavis uses well-defined ports
corenet_tcp_sendrecv_amavisd_recv_port(amavis_t)
corenet_tcp_sendrecv_amavisd_send_port(amavis_t)
# just the other side not. ;-)
corenet_tcp_sendrecv_all_ports(amavis_t)
# connect to backchannel port
corenet_tcp_connect_amavisd_send_port(amavis_t)
# bind to incoming port
corenet_tcp_bind_amavisd_recv_port(amavis_t)
corenet_udp_bind_generic_port(amavis_t)
corenet_dontaudit_udp_bind_all_ports(amavis_t)
corenet_tcp_connect_razor_port(amavis_t)

dev_read_rand(amavis_t)
dev_read_urand(amavis_t)

domain_use_interactive_fds(amavis_t)

files_read_etc_files(amavis_t)
files_read_etc_runtime_files(amavis_t)
files_read_usr_files(amavis_t)

auth_dontaudit_read_shadow(amavis_t)

init_stream_connect_script(amavis_t)

libs_use_ld_so(amavis_t)
libs_use_shared_libs(amavis_t)

logging_send_syslog_msg(amavis_t)

miscfiles_read_localization(amavis_t)

sysnet_dns_name_resolve(amavis_t)
sysnet_use_ldap(amavis_t)

# Cron handling
cron_use_fds(amavis_t)
cron_use_system_job_fds(amavis_t)
cron_rw_pipes(amavis_t)

mta_read_config(amavis_t)

sysadm_dontaudit_search_home_dirs(amavis_t)

optional_policy(`
	clamav_stream_connect(amavis_t)
	clamav_domtrans_clamscan(amavis_t)
')

optional_policy(`
	dcc_domtrans_client(amavis_t)
	dcc_stream_connect_dccifd(amavis_t)
')

optional_policy(`
	postfix_read_config(amavis_t)
')

optional_policy(`
	pyzor_domtrans(amavis_t)
	pyzor_signal(amavis_t)
')

optional_policy(`
	razor_domtrans(amavis_t)
')

optional_policy(`
	spamassassin_exec(amavis_t)
	spamassassin_exec_client(amavis_t)
	spamassassin_read_lib_files(amavis_t)
')