## <summary>Common policy for authentication and user login.</summary>

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

## <summary>

##	Common template to create a domain for authentication.

## </summary>

## <desc>

##	

##	This template creates a derived domain which is allowed

##	to authenticate users by using PAM unix_chkpwd support.

##	

## </desc>

## <param name="userdomain_prefix">

##	<summary>

##	The prefix of the user domain (e.g., user

##	is the prefix for user_t).

##	</summary>

## </param>

#

template(`authlogin_common_auth_domain_template',`

	gen_require(`

		attribute can_read_shadow_passwords;

		type chkpwd_exec_t, shadow_t;

	')

	type $1_chkpwd_t, can_read_shadow_passwords;

	domain_type($1_chkpwd_t)

	domain_entry_file($1_chkpwd_t,chkpwd_exec_t)

	allow $1_chkpwd_t self:capability { audit_write audit_control setuid };

	allow $1_chkpwd_t self:process getattr;

	allow $1_chkpwd_t self:netlink_audit_socket { create_netlink_socket_perms nlmsg_relay };

	files_list_etc($1_chkpwd_t)

	allow $1_chkpwd_t shadow_t:file { getattr read };

	# is_selinux_enabled

	kernel_read_system_state($1_chkpwd_t)

	dev_read_rand($1_chkpwd_t)

	dev_read_urand($1_chkpwd_t)

	fs_dontaudit_getattr_xattr_fs($1_chkpwd_t)

	libs_use_ld_so($1_chkpwd_t)

	libs_use_shared_libs($1_chkpwd_t)

	files_read_etc_files($1_chkpwd_t)

	# for nscd

	files_dontaudit_search_var($1_chkpwd_t)

	logging_send_syslog_msg($1_chkpwd_t)

	miscfiles_read_certs($1_chkpwd_t)

	miscfiles_read_localization($1_chkpwd_t)

	seutil_read_config($1_chkpwd_t)

	sysnet_dns_name_resolve($1_chkpwd_t)

	sysnet_use_ldap($1_chkpwd_t)

	optional_policy(`

		kerberos_use($1_chkpwd_t)

	')

	optional_policy(`

		nis_use_ypbind($1_chkpwd_t)

	')

	optional_policy(`

		nscd_socket_use($1_chkpwd_t)

	')

	optional_policy(`

		samba_stream_connect_winbind($1_chkpwd_t)

	')

')

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

## <summary>

##	The per user domain template for the authlogin module.

## </summary>

## <desc>

##	

##	This template creates a derived domain which is allowed

##	to authenticate users by using PAM unix_chkpwd support.

##	This domain will be used by any programs running in the

##	user domain which use PAM to authenticate.

##	

##	

##	This template is invoked automatically for each user, and

##	generally does not need to be invoked directly

##	by policy writers.

##	

## </desc>

## <param name="userdomain_prefix">

##	<summary>

##	The prefix of the user domain (e.g., user

##	is the prefix for user_t).

##	</summary>

## </param>

## <param name="user_domain">

##	<summary>

##	The type of the user domain.

##	</summary>

## </param>

## <param name="user_role">

##	<summary>

##	The role associated with the user domain.

##	</summary>

## </param>

#

template(`authlogin_per_userdomain_template',`

	gen_require(`

		type system_chkpwd_t, shadow_t;

	')

	authlogin_common_auth_domain_template($1)

	role $3 types $1_chkpwd_t;

	role $3 types system_chkpwd_t;

	allow $2 self:netlink_audit_socket { create_netlink_socket_perms nlmsg_relay };

	dontaudit $2 shadow_t:file { getattr read };

	# Transition from the user domain to this domain.

	domain_auto_trans($2,chkpwd_exec_t,$1_chkpwd_t)

	allow $1_chkpwd_t $2:fd use;

	allow $2 $1_chkpwd_t:fd use;

	allow $1_chkpwd_t $2:fifo_file rw_file_perms;

	allow $1_chkpwd_t $2:process sigchld;

	domain_use_interactive_fds($1_chkpwd_t)

	seutil_use_newrole_fds($1_chkpwd_t)

	# Write to the user domain tty.

	userdom_use_user_terminals($1,$1_chkpwd_t)

')

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

## <summary>

##	Run unix_chkpwd to check a password

##	for a user domain.

## </summary>

## <desc>

##	

##	Run unix_chkpwd to check a password

##	for a user domain.

##	

##	

##	This is a templated interface, and should only

##	be called from a per-userdomain template.

##	

## </desc>

## <param name="userdomain_prefix">

##	<summary>

##	The prefix of the user domain (e.g., user

##	is the prefix for user_t).

##	</summary>

## </param>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

template(`auth_domtrans_user_chk_passwd',`

	ifdef(`targeted_policy',`

		gen_require(`

			type system_chkpwd_t, chkpwd_exec_t;

		')

		domain_auto_trans($2,chkpwd_exec_t,system_chkpwd_t)

		allow $2 system_chkpwd_t:fd use;

		allow system_chkpwd_t $2:fd use;

		allow system_chkpwd_t $2:fifo_file rw_file_perms;

		allow system_chkpwd_t $2:process sigchld;

	',`

		gen_require(`

			type $1_chkpwd_t, chkpwd_exec_t;

		')

		corecmd_search_bin($2)

		domain_auto_trans($2,chkpwd_exec_t,$1_chkpwd_t)

		allow $2 $1_chkpwd_t:fd use;

		allow $1_chkpwd_t $2:fd use;

		allow $1_chkpwd_t $2:fifo_file rw_file_perms;

		allow $1_chkpwd_t $2:process sigchld;

	')

')

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

## <summary>

##	Use the login program as an entry point program.

## </summary>

## <param name="domain">

##	<summary>

##	The type of process using the login program as entry point.

##	</summary>

## </param>

#

interface(`auth_login_entry_type',`

	gen_require(`

		type login_exec_t;

	')

	domain_entry_file($1,login_exec_t)

')

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

## <summary>

##	Execute a login_program in the target domain.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

## <param name="target_domain">

##	<summary>

##	The type of the login_program process.

##	</summary>

## </param>

#

interface(`auth_domtrans_login_program',`

	gen_require(`

		type login_exec_t;

	')

	corecmd_search_bin($1)

	domain_auto_trans($1,login_exec_t,$2)

	allow $1 $2:fd use;

	allow $2 $1:fd use;

	allow $2 $1:fifo_file rw_file_perms;

	allow $2 $1:process sigchld;

')

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

## <summary>

##	Run unix_chkpwd to check a password.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_domtrans_chk_passwd',`

	gen_require(`

		type system_chkpwd_t, chkpwd_exec_t, shadow_t;

	')

	corecmd_search_sbin($1)

	domain_auto_trans($1,chkpwd_exec_t,system_chkpwd_t)

	allow $1 self:capability { audit_write audit_control };

	allow $1 self:netlink_audit_socket { create_netlink_socket_perms nlmsg_relay };

	allow $1 system_chkpwd_t:fd use;

	allow system_chkpwd_t $1:fd use;

	allow system_chkpwd_t $1:fifo_file rw_file_perms;

	allow system_chkpwd_t $1:process sigchld;

	dontaudit $1 shadow_t:file { getattr read };

	dev_read_rand($1)

	dev_read_urand($1)

	miscfiles_read_certs($1)

	sysnet_dns_name_resolve($1)

	sysnet_use_ldap($1)

	optional_policy(`

		kerberos_use($1)

	')

	optional_policy(`

		nis_use_ypbind($1)

	')

	optional_policy(`

		samba_stream_connect_winbind($1)

	')

')

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

## <summary>

##	Get the attributes of the shadow passwords file.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_getattr_shadow',`

	gen_require(`

		type shadow_t;

	')

	files_search_etc($1)

	allow $1 shadow_t:file getattr;

')

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

## <summary>

##	Do not audit attempts to get the attributes

##	of the shadow passwords file.

## </summary>

## <param name="domain">

##	<summary>

##	Domain to not audit.

##	</summary>

## </param>

#

interface(`auth_dontaudit_getattr_shadow',`

	gen_require(`

		type shadow_t;

	')

	dontaudit $1 shadow_t:file getattr;

')

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

## <summary>

##	Read the shadow passwords file (/etc/shadow)

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

# cjp: these next three interfaces are split 

# since typeattribute does not work in conditionals

# yet, otherwise they should be one interface.

# 

interface(`auth_read_shadow',`

	auth_can_read_shadow_passwords($1)

	auth_tunable_read_shadow($1)

')

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

## <summary>

##	Pass shadow assertion for reading.

## </summary>

## <desc>

##	

##	Pass shadow assertion for reading.

##	This should only be used with

##	auth_tunable_read_shadow(), and

##	only exists because typeattribute

##	does not work in conditionals.

##	

## </desc>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_can_read_shadow_passwords',`

	gen_require(`

		attribute can_read_shadow_passwords;

	')

	typeattribute $1 can_read_shadow_passwords;

')

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

## <summary>

##	Read the shadow password file.

## </summary>

## <desc>

##	

##	Read the shadow password file.  This

##	should only be used in a conditional;

##	it does not pass the reading shadow

##	assertion.

##	

## </desc>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_tunable_read_shadow',`

	gen_require(`

		type shadow_t;

	')

	files_list_etc($1)

	allow $1 shadow_t:file r_file_perms;

')

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

## <summary>

##	Do not audit attempts to read the shadow

##	password file (/etc/shadow).

## </summary>

## <param name="domain">

##	<summary>

##	The type of the domain to not audit.

##	</summary>

## </param>

#

interface(`auth_dontaudit_read_shadow',`

	gen_require(`

		type shadow_t;

	')

	dontaudit $1 shadow_t:file { getattr read };

')

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

## <summary>

##	Read and write the shadow password file (/etc/shadow).

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_rw_shadow',`

	gen_require(`

		attribute can_read_shadow_passwords, can_write_shadow_passwords;

		type shadow_t;

	')

	files_list_etc($1)

	allow $1 shadow_t:file rw_file_perms;

	typeattribute $1 can_read_shadow_passwords, can_write_shadow_passwords;

')

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

## <summary>

##	Create, read, write, and delete the shadow

##	password file.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_manage_shadow',`

	gen_require(`

		attribute can_read_shadow_passwords, can_write_shadow_passwords;

		type shadow_t;

	')

	allow $1 shadow_t:file create_file_perms;

	typeattribute $1 can_read_shadow_passwords, can_write_shadow_passwords;

')

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

## <summary>

##	Automatic transition from etc to shadow.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_etc_filetrans_shadow',`

	gen_require(`

		type shadow_t;

	')

	files_etc_filetrans($1,shadow_t,file)

')

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

## <summary>

##	Relabel to the shadow

##	password file type.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_relabelto_shadow',`

	gen_require(`

		attribute can_relabelto_shadow_passwords;

		type shadow_t;

	')

	files_search_etc($1)

	allow $1 shadow_t:file relabelto;

	typeattribute $1 can_relabelto_shadow_passwords;

')

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

## <summary>

##	Relabel from and to the shadow

##	password file type.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_relabel_shadow',`

	gen_require(`

		attribute can_relabelto_shadow_passwords;

		type shadow_t;

	')

	files_search_etc($1)

	allow $1 shadow_t:file { relabelfrom relabelto };

	typeattribute $1 can_relabelto_shadow_passwords;

')

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

## <summary>

##	Append to the login failure log.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_append_faillog',`

	gen_require(`

		type faillog_t;

	')

	logging_search_logs($1)

	allow $1 faillog_t:file { getattr append };

')

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

## <summary>

##	Read and write the login failure log.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_rw_faillog',`

	gen_require(`

		type faillog_t;

	')

	logging_search_logs($1)

	allow $1 faillog_t:file rw_file_perms;

')

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

## <summary>

##	Read the last logins log.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_read_lastlog',`

	gen_require(`

		type lastlog_t;

	')

	logging_search_logs($1)

	allow $1 lastlog_t:file { getattr read };

')

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

## <summary>

##	Append only to the last logins log.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_append_lastlog',`

	gen_require(`

		type lastlog_t;

	')

	logging_search_logs($1)

	allow $1 lastlog_t:file { getattr lock append };

')

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

## <summary>

##	Read and write to the last logins log.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_rw_lastlog',`

	gen_require(`

		type lastlog_t;

	')

	logging_search_logs($1)

	allow $1 lastlog_t:file { getattr read write setattr };

')

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

## <summary>

##	Execute pam programs in the pam domain.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_domtrans_pam',`

	gen_require(`

		type pam_t, pam_exec_t;

	')

	domain_auto_trans($1,pam_exec_t,pam_t)

	allow $1 pam_t:fd use;

	allow pam_t $1:fd use;

	allow pam_t $1:fifo_file rw_file_perms;

	allow pam_t $1:process sigchld;

')

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

## <summary>

##	Execute pam programs in the PAM domain.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

## <param name="role">

##	<summary>

##	The role to allow the PAM domain.

##	</summary>

## </param>

## <param name="terminal">

##	<summary>

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

##	</summary>

## </param>

#

interface(`auth_run_pam',`

	gen_require(`

		type pam_t;

	')

	auth_domtrans_pam($1)

	role $2 types pam_t;

	allow pam_t $3:chr_file rw_file_perms;

')

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

## <summary>

##	Execute the pam program.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_exec_pam',`

	gen_require(`

		type pam_exec_t;

	')

	can_exec($1,pam_exec_t)

')

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

## <summary>

##	Manage var auth files. Used by various other applications

##	and pam applets etc.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_manage_var_auth',`

	gen_require(`

		type var_auth_t;

	')

	files_search_var($1)

	allow $1 var_auth_t:dir create_dir_perms;

	allow $1 var_auth_t:file rw_file_perms;

	allow $1 var_auth_t:lnk_file rw_file_perms;

')

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

## <summary>

##	Read PAM PID files.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_read_pam_pid',`

	gen_require(`

		type pam_var_run_t;

	')

	files_search_var($1)

	files_search_pids($1)

	allow $1 pam_var_run_t:dir r_dir_perms;

	allow $1 pam_var_run_t:file r_file_perms;

')

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

## <summary>

##	Do not audit attemps to read PAM PID files.

## </summary>

## <param name="domain">

##	<summary>

##	Domain to not audit.

##	</summary>

## </param>

#

interface(`auth_dontaudit_read_pam_pid',`

	gen_require(`

		type pam_var_run_t;

	')

	dontaudit $1 pam_var_run_t:file { getattr read };

')

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

## <summary>

##	Delete pam PID files.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_delete_pam_pid',`

	gen_require(`

		type pam_var_run_t;

	')

	files_search_var($1)

	files_search_pids($1)

	allow $1 pam_var_run_t:dir { getattr search read write remove_name };

	allow $1 pam_var_run_t:file { getattr unlink };

')

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

## <summary>

##	Manage pam PID files.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_manage_pam_pid',`

	gen_require(`

		type pam_var_run_t;

	')

	files_search_pids($1)

	allow $1 pam_var_run_t:dir create_dir_perms;

	allow $1 pam_var_run_t:file create_file_perms;

')

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

## <summary>

##	Execute pam_console with a domain transition.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_domtrans_pam_console',`

	gen_require(`

		type pam_console_t, pam_console_exec_t;

	')

	domain_auto_trans($1,pam_console_exec_t,pam_console_t)

	allow $1 pam_console_t:fd use;

	allow pam_console_t $1:fd use;

	allow pam_console_t $1:fifo_file rw_file_perms;

	allow pam_console_t $1:process sigchld;

')

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

## <summary>

##	Search the contents of the

##	pam_console data directory.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_search_pam_console_data',`

	gen_require(`

		type pam_var_console_t;

	')

	files_search_var($1)

	files_search_pids($1)

	allow $1 pam_var_console_t:dir search_dir_perms;

')

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

## <summary>

##	List the contents of the pam_console

##	data directory.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_list_pam_console_data',`

	gen_require(`

		type pam_var_console_t;

	')

	files_search_var($1)

	files_search_pids($1)

	allow $1 pam_var_console_t:dir r_dir_perms;

')

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

## <summary>

##	Read pam_console data files.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`auth_read_pam_console_data',`

	gen_require(`

		type pam_var_console_t;

	')

	files_search_var($1)

	files_search_pids($1)

	allow $1 pam_var_console_t:dir r_dir_perms;