type enforcement

squid.te (text/plain), 2.36 KB, created by petre rodan (RETIRED) on 2004-01-04 05:01:55 UTC

#DESC Squid - Web cache
#
# Author:  Russell Coker <[e-mail]>
# X-Debian-Packages: squid
#

#################################
#
# Rules for the squid_t domain.
#
# squid_t is the domain the squid process runs in
ifdef(`apache.te',`
can_tcp_connect(squid_t, httpd_t)
', `
type http_cache_port_t, port_type;
')

daemon_domain(squid, `, web_client_domain')
type squid_conf_t, file_type, sysadmfile;

allow { squid_t initrc_t } squid_conf_t:file r_file_perms;
allow squid_t squid_conf_t:dir r_dir_perms;

# var_log_squid_t is for /var/log/squid
type var_log_squid_t, file_type, sysadmfile, logfile;

# type for /var/cache/squid
type squid_cache_t, file_type, sysadmfile;

allow squid_t squid_t:capability { setgid setuid };
allow squid_t { etc_t etc_runtime_t }:file r_file_perms;
allow squid_t etc_t:lnk_file read;
allow squid_t self:unix_stream_socket create_socket_perms;
allow squid_t self:unix_dgram_socket create_socket_perms;
allow squid_t self:fifo_file rw_file_perms;

allow squid_t { sysctl_t sysctl_kernel_t }:dir search;
allow squid_t { sysctl_kernel_t }:file read;

allow squid_t resolv_conf_t:file r_file_perms;

allow squid_t devtty_t:chr_file rw_file_perms;

allow squid_t { self proc_t }:file { read getattr };

# for when we use /var/spool/cache
allow squid_t var_spool_t:dir search;

# Grant permissions to create, access, and delete cache and log files.
# No type transitions required, as the files inherit the parent directory type.
allow squid_t squid_cache_t:dir create_dir_perms;
allow squid_t squid_cache_t:{ file lnk_file } create_file_perms;
allow squid_t var_log_t:dir r_dir_perms;
allow squid_t var_log_squid_t:dir create_dir_perms;
allow squid_t var_log_squid_t:file create_file_perms;
ifdef(`logrotate.te',
`domain_auto_trans(logrotate_t, squid_exec_t, squid_t)')
ifdef(`crond.te', `domain_auto_trans(system_crond_t, squid_exec_t, squid_t)')

# Use the network
can_network(squid_t)
can_tcp_connect(web_client_domain, squid_t)

# tcp port 8080 and udp port 3130 is http_cache_port_t (see net_contexts)
allow squid_t http_cache_port_t:tcp_socket name_bind;
allow squid_t http_cache_port_t:udp_socket name_bind;

# to allow running programs from /usr/lib/squid (IE unlinkd)
# also allow exec()ing itself
can_exec(squid_t, { lib_t squid_exec_t } )
allow squid_t { bin_t sbin_t }:dir search;

dontaudit squid_t home_root_t:dir getattr;
dontaudit squid_t security_t:dir { getattr };