selinux-policy/policy/modules/services/squid.if

## <summary>Squid caching http proxy server</summary>

########################################
## <summary>
##	Execute squid in the squid domain.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`squid_domtrans',`
	gen_require(`
		type squid_t, squid_exec_t;
	')

	corecmd_search_bin($1)
	domtrans_pattern($1, squid_exec_t, squid_t)
')

########################################
## <summary>
##	Execute squid 
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`squid_exec',`
	gen_require(`
		type squid_exec_t;
	')

	can_exec($1, squid_exec_t)
')

########################################
## <summary>
##	Send generic signals to squid.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`squid_signal',`
	gen_require(`
		type squid_t;
	')

	allow $1 squid_t:process signal;
')

########################################
## <summary>
##	Allow read and write squid
##	unix domain stream sockets.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`squid_rw_stream_sockets',`
	gen_require(`
		type squid_t;
	')

	allow $1 squid_t:unix_stream_socket { getattr read write };
')

########################################
## <summary>
##	Do not audit attempts to search squid cache dirs
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
## <rolecap/>
#
interface(`squid_dontaudit_search_cache',`
	gen_require(`
		type squid_cache_t;
	')

	dontaudit $1 squid_cache_t:dir search_dir_perms;
')

########################################
## <summary>
##	Read squid configuration file.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`squid_read_config',`
	gen_require(`
		type squid_conf_t;
	')

	files_search_etc($1)
	read_files_pattern($1, squid_conf_t, squid_conf_t)
')

########################################
## <summary>
##	Append squid logs.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`squid_read_log',`
	gen_require(`
		type squid_log_t;
	')

	logging_search_logs($1)
	read_files_pattern($1, squid_log_t, squid_log_t)
')

########################################
## <summary>
##	Append squid logs.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`squid_append_log',`
	gen_require(`
		type squid_log_t;
	')

	logging_search_logs($1)
	append_files_pattern($1, squid_log_t, squid_log_t)
')

########################################
## <summary>
##	Create, read, write, and delete
##	squid logs.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`squid_manage_logs',`
	gen_require(`
		type squid_log_t;
	')

	logging_search_logs($1)
	manage_files_pattern($1, squid_log_t, squid_log_t)
')

########################################
## <summary>
##	Use squid services by connecting over TCP.  (Deprecated)
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`squid_use',`
	refpolicywarn(`$0($*) has been deprecated.')
')

########################################
## <summary>
##	All of the rules required to administrate 
##	an squid environment
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	The role to be allowed to manage the squid domain.
##	</summary>
## </param>
## <rolecap/>
#
interface(`squid_admin',`
	gen_require(`
		type squid_t, squid_cache_t, squid_conf_t;
		type squid_log_t, squid_var_run_t;
		type squid_initrc_exec_t;
	')

	allow $1 squid_t:process { ptrace signal_perms };
	ps_process_pattern($1, squid_t)

	init_labeled_script_domtrans($1, squid_initrc_exec_t)
	domain_system_change_exemption($1)
	role_transition $2 squid_initrc_exec_t system_r;
	allow $2 system_r;

	files_list_var($1)
	admin_pattern($1, squid_cache_t)

	files_list_etc($1)
	admin_pattern($1, squid_conf_t)

	logging_list_logs($1)
	admin_pattern($1, squid_log_t)

	files_list_pids($1)
	admin_pattern($1, squid_var_run_t)
')