## <summary>Policy for the Debian package manager.</summary>
# TODO: need debconf policy
# TODO: need install-menu policy

########################################
## <summary>
##	Execute dpkg programs in the dpkg domain.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`dpkg_domtrans',`
	gen_require(`
		type dpkg_t, dpkg_exec_t;
	')

	files_search_usr($1)
	corecmd_search_bin($1)
	domain_auto_trans($1,dpkg_exec_t,dpkg_t)

	# allow basic communication
	allow $1 dpkg_t:fd use;
	allow dpkg_t $1:fd use;
	allow dpkg_t $1:fifo_file rw_file_perms;
	allow dpkg_t $1:process sigchld;
')

########################################
## <summary>
##	Execute dpkg_script programs in the dpkg_script domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`dpkg_domtrans_script',`
	gen_require(`
		type dpkg_script_t;
	')

	# transition to dpkg script:
	corecmd_shell_domtrans($1,dpkg_script_t)

	allow $1 dpkg_script_t:fd use;
	allow dpkg_script_t $1:fd use;
	allow dpkg_script_t $1:fifo_file rw_file_perms;
	allow dpkg_script_t $1:process sigchld;
')

########################################
## <summary>
##	Execute dpkg programs in the dpkg domain.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	The role to allow the dpkg domain.
##	</summary>
## </param>
## <param name="terminal">
##	<summary>
##	The type of the terminal allow the dpkg domain to use.
##	</summary>
## </param>
#
interface(`dpkg_run',`
	gen_require(`
		type dpkg_t, dpkg_script_t;
	')

	dpkg_domtrans($1)
	role $2 types dpkg_t;
	role $2 types dpkg_script_t;
	seutil_run_loadpolicy(dpkg_script_t,$2,$3)
	allow dpkg_t $3:chr_file rw_term_perms;
')

########################################
## <summary>
##	Inherit and use file descriptors from dpkg.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`dpkg_use_fds',`
	gen_require(`
		type dpkg_t;
	')

	allow $1 dpkg_t:fd use;
')

########################################
## <summary>
##	Read from an unnamed dpkg pipe.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`dpkg_read_pipes',`
	gen_require(`
		type dpkg_t;
	')

	allow $1 dpkg_t:fifo_file r_file_perms;
')

########################################
## <summary>
##	Read and write an unnamed dpkg pipe.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`dpkg_rw_pipes',`
	gen_require(`
		type dpkg_t;
	')

	allow $1 dpkg_t:fifo_file rw_file_perms;
')

########################################
## <summary>
##	Inherit and use file descriptors from dpkg scripts.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`dpkg_use_script_fds',`
	gen_require(`
		type dpkg_script_t;
	')

	allow $1 dpkg_script_t:fd use;
')

########################################
## <summary>
##	Read the dpkg package database.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`dpkg_read_db',`
	gen_require(`
		type dpkg_var_lib_t;
	')

	files_search_var_lib($1)
	allow $1 dpkg_var_lib_t:dir r_dir_perms;
	allow $1 dpkg_var_lib_t:file { getattr read };
	allow $1 dpkg_var_lib_t:lnk_file r_file_perms;
')

########################################
## <summary>
##	Create, read, write, and delete the dpkg package database.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`dpkg_manage_db',`
	gen_require(`
		type dpkg_var_lib_t;
	')

	files_search_var_lib($1)
	allow $1 dpkg_var_lib_t:dir rw_dir_perms;
	allow $1 dpkg_var_lib_t:file manage_file_perms;
	allow $1 dpkg_var_lib_t:lnk_file { getattr read write unlink };
')

########################################
## <summary>
##	Do not audit attempts to create, read, 
##	write, and delete the dpkg package database.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`dpkg_dontaudit_manage_db',`
	gen_require(`
		type dpkg_var_lib_t;
	')

	dontaudit $1 dpkg_var_lib_t:dir rw_dir_perms;
	dontaudit $1 dpkg_var_lib_t:file manage_file_perms;
	dontaudit $1 dpkg_var_lib_t:lnk_file create_lnk_perms;
')

########################################
## <summary>
##	Lock the dpkg package database.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`dpkg_lock_db',`
	gen_require(`
		type dpkg_lock_t;
	')

	files_search_var_lib($1)
	allow $1 dpkg_var_lib_t:dir r_dir_perms;
	allow $1 dpkg_lock_t:file { getattr create read write append unlink lock };
')