policy_module(squid,1.0)

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

#

# Declarations

#

type squid_t;

type squid_exec_t;

init_daemon_domain(squid_t,squid_exec_t)

# type for /var/cache/squid

type squid_cache_t;

files_type(squid_cache_t)

type squid_conf_t;

files_type(squid_conf_t)

type squid_log_t;

logging_log_file(squid_log_t)

type squid_var_run_t;

files_pid_file(squid_var_run_t)

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

#

# Local policy

#

allow squid_t self:capability { setgid setuid dac_override };

dontaudit squid_t self:capability sys_tty_config;

allow squid_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap };

allow squid_t self:unix_stream_socket create_stream_socket_perms;

allow squid_t self:unix_dgram_socket create_socket_perms;

allow squid_t self:unix_dgram_socket sendto;

allow squid_t self:unix_stream_socket connectto;

allow squid_t self:fifo_file rw_file_perms;

allow squid_t self:fd use;

allow squid_t self:shm create_shm_perms;

allow squid_t self:sem create_sem_perms;

allow squid_t self:msgq create_msgq_perms;

allow squid_t self:msg { send receive };

# Grant permissions to create, access, and delete cache files.

allow squid_t squid_cache_t:dir create_dir_perms;

allow squid_t squid_cache_t:file create_file_perms;

allow squid_t squid_cache_t:lnk_file create_lnk_perms;

allow squid_t squid_conf_t:file r_file_perms;

allow squid_t squid_conf_t:dir r_dir_perms;

allow squid_t squid_conf_t:lnk_file read;

can_exec(squid_t,squid_exec_t)

allow squid_t squid_log_t:file create_file_perms;

allow squid_t squid_log_t:dir rw_dir_perms;

logging_create_log(squid_t,squid_log_t,{ file dir })

allow squid_t squid_var_run_t:file create_file_perms;

files_create_pid(squid_t,squid_var_run_t)

kernel_read_kernel_sysctl(squid_t)

kernel_read_system_state(squid_t)

kernel_tcp_recvfrom(squid_t)

bootloader_dontaudit_getattr_boot_dir(squid_t)

corenet_tcp_sendrecv_all_if(squid_t)

corenet_raw_sendrecv_all_if(squid_t)

corenet_udp_sendrecv_all_if(squid_t)

corenet_tcp_sendrecv_all_nodes(squid_t)

corenet_udp_sendrecv_all_nodes(squid_t)

corenet_raw_sendrecv_all_nodes(squid_t)

corenet_tcp_sendrecv_all_ports(squid_t)

corenet_udp_sendrecv_all_ports(squid_t)

corenet_tcp_bind_all_nodes(squid_t)

corenet_udp_bind_all_nodes(squid_t)

corenet_tcp_bind_http_cache_port(squid_t)

corenet_udp_bind_http_cache_port(squid_t)

corenet_tcp_bind_ftp_port(squid_t)

corenet_udp_bind_ftp_port(squid_t)

corenet_tcp_bind_gopher_port(squid_t)

corenet_udp_bind_gopher_port(squid_t)

corenet_tcp_connect_ftp_port(squid_t)

corenet_tcp_connect_gopher_port(squid_t)

corenet_tcp_connect_http_port(squid_t)

dev_read_sysfs(squid_t)

dev_read_urand(squid_t)

fs_getattr_all_fs(squid_t)

fs_search_auto_mountpoints(squid_t)

selinux_dontaudit_getattr_dir(squid_t)

term_dontaudit_use_console(squid_t)

term_dontaudit_getattr_pty_dir(squid_t)

# to allow running programs from /usr/lib/squid (IE unlinkd)

corecmd_exec_bin(squid_t)

corecmd_exec_sbin(squid_t)

corecmd_exec_shell(squid_t)

domain_use_wide_inherit_fd(squid_t)

files_read_etc_files(squid_t)

files_read_etc_runtime_files(squid_t)

files_read_usr_files(squid_t)

files_search_spool(squid_t)

files_dontaudit_getattr_tmp_dir(squid_t)

files_getattr_home_dir(squid_t)

init_use_fd(squid_t)

init_use_script_pty(squid_t)

libs_use_ld_so(squid_t)

libs_use_shared_libs(squid_t)

# to allow running programs from /usr/lib/squid (IE unlinkd)

libs_exec_lib_files(squid_t)

logging_send_syslog_msg(squid_t)

miscfiles_read_certs(squid_t)

miscfiles_read_localization(squid_t)

userdom_use_unpriv_users_fd(squid_t)

userdom_dontaudit_use_unpriv_user_fd(squid_t)

userdom_dontaudit_search_sysadm_home_dir(squid_t)

ifdef(`targeted_policy', `

	term_dontaudit_use_unallocated_tty(squid_t)

	term_dontaudit_use_generic_pty(squid_t)

	files_dontaudit_read_root_file(squid_t)

')

tunable_policy(`squid_connect_any',`

	corenet_tcp_connect_all_ports(squid_t)

')

optional_policy(`logrotate.te',`

	allow squid_t self:capability kill;

	cron_use_fd(squid_t)

	cron_use_system_job_fd(squid_t)

	cron_rw_pipe(squid_t)

	cron_write_system_job_pipe(squid_t)

')

optional_policy(`mount.te',`

	mount_send_nfs_client_request(squid_t)

')

optional_policy(`nis.te',`

	nis_use_ypbind(squid_t)

')

optional_policy(`nscd.te',`

	nscd_use_socket(squid_t)

')

optional_policy(`selinuxutil.te',`

	seutil_sigchld_newrole(squid_t)

')

optional_policy(`udev.te', `

	udev_read_db(squid_t)

')

ifdef(`TODO',`

optional_policy(`rhgb.te',`

	rhgb_domain(squid_t)

')

ifdef(`apache.te',`

can_tcp_connect(squid_t, httpd_t)

')

ifdef(`winbind.te', `

domain_auto_trans(squid_t, winbind_helper_exec_t, winbind_helper_t)

allow winbind_helper_t squid_t:tcp_socket rw_socket_perms;

')

#squid requires the following when run in diskd mode, the recommended setting

allow squid_t tmpfs_t:file { read write };

') dnl end TODO