## <summary>Postfix email server</summary>

########################################

## <summary>

##	Postfix stub interface.  No access allowed.

## </summary>

## <param name="domain" optional="true">

##	<summary>

##	N/A

##	</summary>

## </param>

#

interface(`postfix_stub',`

	gen_require(`

		type postfix_master_t;

	')

')

########################################

## <summary>

##	Creates types and rules for a basic

##	postfix process domain.

## </summary>

## <param name="prefix">

##	<summary>

##	Prefix for the domain.

##	</summary>

## </param>

#

template(`postfix_domain_template',`

	type postfix_$1_t;

	type postfix_$1_exec_t;

	domain_type(postfix_$1_t)

	domain_entry_file(postfix_$1_t,postfix_$1_exec_t)

	role system_r types postfix_$1_t;

	dontaudit postfix_$1_t self:capability sys_tty_config;

	allow postfix_$1_t self:process { signal_perms setpgid };

	allow postfix_$1_t self:unix_dgram_socket create_socket_perms;

	allow postfix_$1_t self:unix_stream_socket create_stream_socket_perms;

	allow postfix_$1_t self:unix_stream_socket connectto;

	allow postfix_master_t postfix_$1_t:process signal;

	#https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=244456

	allow postfix_$1_t postfix_master_t:file read;

	allow postfix_$1_t postfix_etc_t:dir list_dir_perms;

	read_files_pattern(postfix_$1_t,postfix_etc_t,postfix_etc_t)

	can_exec(postfix_$1_t, postfix_$1_exec_t)

	allow postfix_$1_t postfix_exec_t:file { mmap_file_perms lock ioctl };

	allow postfix_$1_t postfix_master_t:process sigchld;

	allow postfix_$1_t postfix_spool_t:dir list_dir_perms;

	allow postfix_$1_t postfix_var_run_t:file manage_file_perms;

	files_pid_filetrans(postfix_$1_t,postfix_var_run_t,file)

	kernel_read_system_state(postfix_$1_t)

	kernel_read_network_state(postfix_$1_t)

	kernel_read_all_sysctls(postfix_$1_t)

	dev_read_sysfs(postfix_$1_t)

	dev_read_rand(postfix_$1_t)

	dev_read_urand(postfix_$1_t)

	fs_search_auto_mountpoints(postfix_$1_t)

	fs_getattr_xattr_fs(postfix_$1_t)

	fs_rw_anon_inodefs_files(postfix_$1_t)

	term_dontaudit_use_console(postfix_$1_t)

	corecmd_exec_shell(postfix_$1_t)

	files_read_etc_files(postfix_$1_t)

	files_read_etc_runtime_files(postfix_$1_t)

	files_read_usr_symlinks(postfix_$1_t)

	files_search_spool(postfix_$1_t)

	files_getattr_tmp_dirs(postfix_$1_t)

	init_dontaudit_use_fds(postfix_$1_t)

	init_sigchld(postfix_$1_t)

	auth_use_nsswitch(postfix_$1_t)

	libs_use_ld_so(postfix_$1_t)

	libs_use_shared_libs(postfix_$1_t)

	logging_send_syslog_msg(postfix_$1_t)

	miscfiles_read_localization(postfix_$1_t)

	miscfiles_read_certs(postfix_$1_t)

	userdom_dontaudit_use_unpriv_user_fds(postfix_$1_t)

	optional_policy(`

		udev_read_db(postfix_$1_t)

	')

')

########################################

## <summary>

##	Creates a postfix server process domain.

## </summary>

## <param name="prefix">

##	<summary>

##	Prefix of the domain.

##	</summary>

## </param>

#

template(`postfix_server_domain_template',`

	postfix_domain_template($1)

	allow postfix_$1_t self:capability { setuid setgid dac_override };

	allow postfix_$1_t postfix_master_t:unix_stream_socket { connectto rw_stream_socket_perms };

	allow postfix_$1_t self:tcp_socket create_socket_perms;

	allow postfix_$1_t self:udp_socket create_socket_perms;

	domtrans_pattern(postfix_master_t, postfix_$1_exec_t, postfix_$1_t)

	corenet_all_recvfrom_unlabeled(postfix_$1_t)

	corenet_all_recvfrom_netlabel(postfix_$1_t)

	corenet_tcp_sendrecv_all_if(postfix_$1_t)

	corenet_udp_sendrecv_all_if(postfix_$1_t)

	corenet_tcp_sendrecv_all_nodes(postfix_$1_t)

	corenet_udp_sendrecv_all_nodes(postfix_$1_t)

	corenet_tcp_sendrecv_all_ports(postfix_$1_t)

	corenet_udp_sendrecv_all_ports(postfix_$1_t)

	corenet_tcp_bind_all_nodes(postfix_$1_t)

	corenet_udp_bind_all_nodes(postfix_$1_t)

	corenet_tcp_connect_all_ports(postfix_$1_t)

	corenet_sendrecv_all_client_packets(postfix_$1_t)

')

########################################

## <summary>

##	Creates a process domain for programs

##	that are ran by users.

## </summary>

## <param name="prefix">

##	<summary>

##	Prefix of the domain.

##	</summary>

## </param>

#

template(`postfix_user_domain_template',`

	gen_require(`

		attribute postfix_user_domains, postfix_user_domtrans;

	')

	postfix_domain_template($1)

	typeattribute postfix_$1_t postfix_user_domains;

	allow postfix_$1_t self:capability dac_override;

	domtrans_pattern(postfix_user_domtrans, postfix_$1_exec_t, postfix_$1_t)

	domain_use_interactive_fds(postfix_$1_t)

')

########################################

## <summary>

##	The per role template for the postfix module.

## </summary>

## <param name="prefix" unused="true">

##	<summary>

##	The prefix of the user domain.

##	(e.g., user is the prefix of user_t)

##	</summary>

## </param>

## <param name="user_domain">

##	<summary>

##	User domain type.

##	</summary>

## </param>

## <param name="user_role">

##	<summary>

##	User role

##	</summary>

## </param>

#

template(`postfix_per_role_template',`

	gen_require(`

		attribute postfix_user_domains;

		type postfix_postdrop_t;

	')

	role $3 types postfix_postdrop_t;

	allow postfix_user_domains $2:process sigchld;

	allow postfix_user_domains $2:fifo_file { write getattr };

	allow postfix_user_domains $2:fd use;

')

########################################

## <summary>

##	Read postfix configuration files.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

## <rolecap/>

#

interface(`postfix_read_config',`

	gen_require(`

		type postfix_etc_t;

	')

	allow $1 postfix_etc_t:dir { getattr read search };

	allow $1 postfix_etc_t:file { read getattr };

	allow $1 postfix_etc_t:lnk_file { getattr read };

	files_search_etc($1)

')

########################################

## <summary>

##	Create files with the specified type in

##	the postfix configuration directories.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

## <param name="private type">

##	<summary>

##	The type of the object to be created.

##	</summary>

## </param>

## <param name="object">

##	<summary>

##	The object class of the object being created.

##	</summary>

## </param>

#

interface(`postfix_config_filetrans',`

	gen_require(`

		type postfix_etc_t;

	')

	files_search_etc($1)

	filetrans_pattern($1,postfix_etc_t,$2,$3)

')

########################################

## <summary>

##	Do not audit attempts to read and

##	write postfix local delivery

##	TCP sockets.

## </summary>

## <param name="domain">

##	<summary>

##	Domain to not audit.

##	</summary>

## </param>

#

interface(`postfix_dontaudit_rw_local_tcp_sockets',`

	gen_require(`

		type postfix_local_t;

	')

	dontaudit $1 postfix_local_t:tcp_socket { read write };

')

########################################

## <summary>

##	Allow domain to read postfix local process state

## </summary>

## <param name="domain">

##	<summary>

##	Domain to not audit.

##	</summary>

## </param>

#

interface(`postfix_read_local_state',`

	gen_require(`

		type postfix_local_t;

	')

	read_files_pattern($1,postfix_local_t,postfix_local_t)

')

########################################

## <summary>

##	Allow domain to read postfix master process state

## </summary>

## <param name="domain">

##	<summary>

##	Domain to not audit.

##	</summary>

## </param>

#

interface(`postfix_read_master_state',`

	gen_require(`

		type postfix_master_t;

	')

	read_files_pattern($1,postfix_master_t,postfix_master_t)

')

########################################

## <summary>

##	Do not audit attempts to use

##	postfix master process file

##	file descriptors.

## </summary>

## <param name="domain">

##	<summary>

##	Domain to not audit.

##	</summary>

## </param>

#

interface(`postfix_dontaudit_use_fds',`

	gen_require(`

		type postfix_master_t;

	')

	dontaudit $1 postfix_master_t:fd use;

')

########################################

## <summary>

##	Execute postfix_map in the postfix_map domain.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`postfix_domtrans_map',`

	gen_require(`

		type postfix_map_t, postfix_map_exec_t;

	')

	domtrans_pattern($1,postfix_map_exec_t,postfix_map_t)

')

########################################

## <summary>

##	Execute postfix_map in the postfix_map domain, and

##	allow the specified role the postfix_map domain.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

## <param name="role">

##	<summary>

##	The role to be allowed the postfix_map domain.

##	</summary>

## </param>

## <param name="terminal">

##	<summary>

##	The type of the terminal allow the postfix_map domain to use.

##	</summary>

## </param>

## <rolecap/>

#

interface(`postfix_run_map',`

	gen_require(`

		type postfix_map_t;

	')

	postfix_domtrans_map($1)

	role $2 types postfix_map_t;

	allow postfix_map_t $3:chr_file rw_term_perms;

')

########################################

## <summary>

##	Execute the master postfix program in the

##	postfix_master domain.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`postfix_domtrans_master',`

	gen_require(`

		type postfix_master_t, postfix_master_exec_t;

	')

	domtrans_pattern($1,postfix_master_exec_t,postfix_master_t)

')

########################################

## <summary>

##	Execute the master postfix program in the

##	caller domain.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`postfix_exec_master',`

	gen_require(`

		type postfix_master_exec_t;

	')

	can_exec($1,postfix_master_exec_t)

')

########################################

## <summary>

##	Create a named socket in a postfix private directory.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`postfix_create_pivate_sockets',`

	gen_require(`

		type postfix_private_t;

	')

	allow $1 postfix_private_t:dir list_dir_perms;

	create_sock_files_pattern($1,postfix_private_t,postfix_private_t)

')

########################################

## <summary>

##	Execute the master postfix program in the

##	postfix_master domain.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`postfix_domtrans_smtp',`

	gen_require(`

		type postfix_smtp_t, postfix_smtp_exec_t;

	')

	domtrans_pattern($1,postfix_smtp_exec_t,postfix_smtp_t)

')

########################################

## <summary>

##	Search postfix mail spool directories.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`postfix_search_spool',`

	gen_require(`

		type postfix_spool_t;

	')

	allow $1 postfix_spool_t:dir search_dir_perms;

	files_search_spool($1)

')

########################################

## <summary>

##	List postfix mail spool directories.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`postfix_list_spool',`

	gen_require(`

		type postfix_spool_t;

	')

	allow $1 postfix_spool_t:dir list_dir_perms;

	files_search_spool($1)

')

########################################

## <summary>

##	Read postfix mail spool files.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`postfix_read_spool_files',`

	gen_require(`

		type postfix_spool_t;

	')

	files_search_spool($1)

	read_files_pattern($1,postfix_spool_t, postfix_spool_t)

')

########################################

## <summary>

##	Execute postfix user mail programs

##	in their respective domains.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`postfix_domtrans_user_mail_handler',`

	gen_require(`

		attribute postfix_user_domtrans;

	')

	typeattribute $1 postfix_user_domtrans;

')