selinux-policy/refpolicy/policy/modules/services/mta.te

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policy_module(mta,1.0)
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########################################
#
# Declarations
#
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attribute mta_user_agent;
attribute mailserver_delivery;
attribute mailserver_domain;
attribute mailserver_sender;
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attribute user_mail_domain;
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type etc_aliases_t;
files_type(etc_aliases_t)
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type etc_mail_t;
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files_config_file(etc_mail_t)
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type mqueue_spool_t;
files_type(mqueue_spool_t)
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type mail_spool_t;
files_type(mail_spool_t)
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type sendmail_exec_t;
files_type(sendmail_exec_t)
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type system_mail_t, user_mail_domain;
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domain_type(system_mail_t)
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domain_entry_file(system_mail_t,sendmail_exec_t)
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role system_r types system_mail_t;
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# cjp: need to resolve this, but require{}
# does not work in the else part of the optional
#ifdef(`targeted_policy',`',`
# optional_policy(`sendmail.te',`',`
# init_system_domain(system_mail_t,sendmail_exec_t)
# ')
#')
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########################################
#
# System mail local policy
#
allow system_mail_t self:capability { setuid setgid chown };
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allow system_mail_t self:process { signal_perms setrlimit };
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allow system_mail_t self:tcp_socket create_socket_perms;
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allow system_mail_t etc_mail_t:dir { getattr search };
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allow system_mail_t etc_mail_t:file r_file_perms;
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# re-exec itself
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can_exec(system_mail_t, sendmail_exec_t)
allow system_mail_t sendmail_exec_t:lnk_file r_file_perms;
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kernel_read_kernel_sysctl(system_mail_t)
kernel_read_system_state(system_mail_t)
kernel_read_network_state(system_mail_t)
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corenet_tcp_sendrecv_all_if(system_mail_t)
corenet_raw_sendrecv_all_if(system_mail_t)
corenet_tcp_sendrecv_all_nodes(system_mail_t)
corenet_raw_sendrecv_all_nodes(system_mail_t)
corenet_tcp_sendrecv_all_ports(system_mail_t)
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corenet_tcp_bind_all_nodes(system_mail_t)
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corenet_tcp_connect_smtp_port(system_mail_t)
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dev_read_rand(system_mail_t)
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dev_read_urand(system_mail_t)
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fs_getattr_xattr_fs(system_mail_t)
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init_use_script_pty(system_mail_t)
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files_read_etc_files(system_mail_t)
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files_read_etc_runtime_files(system_mail_t)
files_search_spool(system_mail_t)
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# It wants to check for nscd
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files_dontaudit_search_pids(system_mail_t)
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corecmd_exec_bin(system_mail_t)
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corecmd_search_sbin(system_mail_t)
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libs_use_ld_so(system_mail_t)
libs_use_shared_libs(system_mail_t)
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logging_send_syslog_msg(system_mail_t)
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miscfiles_read_localization(system_mail_t)
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sysnet_read_config(system_mail_t)
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sysnet_dns_name_resolve(system_mail_t)
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userdom_use_sysadm_terms(system_mail_t)
ifdef(`targeted_policy',`
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typealias system_mail_t alias sysadm_mail_t;
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allow system_mail_t mail_spool_t:dir create_dir_perms;
allow system_mail_t mail_spool_t:file create_file_perms;
allow system_mail_t mail_spool_t:lnk_file create_lnk_perms;
allow system_mail_t mail_spool_t:fifo_file rw_file_perms;
allow system_mail_t mqueue_spool_t:dir create_dir_perms;
allow system_mail_t mqueue_spool_t:file create_file_perms;
allow system_mail_t mqueue_spool_t:lnk_file create_lnk_perms;
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# for reading .forward - maybe we need a new type for it?
# also for delivering mail to maildir
# cjp: fix this to generic_user interfaces
userdom_manage_user_home_subdirs(user,mailserver_delivery)
userdom_manage_user_home_subdir_files(user,mailserver_delivery)
userdom_manage_user_home_subdir_symlinks(user,mailserver_delivery)
userdom_manage_user_home_subdir_pipes(user,mailserver_delivery)
userdom_manage_user_home_subdir_sockets(user,mailserver_delivery)
userdom_create_user_home(user,mailserver_delivery,{ dir file lnk_file fifo_file sock_file })
# cjp: another require-in-else to resolve
# optional_policy(`postfix.te',`',`
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corecmd_exec_bin(system_mail_t)
corecmd_exec_sbin(system_mail_t)
domain_exec_all_entry_files(system_mail_t)
files_exec_etc_files(system_mail_t)
libs_use_ld_so(system_mail_t)
libs_use_shared_libs(system_mail_t)
libs_exec_ld_so(system_mail_t)
libs_exec_lib_files(system_mail_t)
# ')
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')
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optional_policy(`apache.te',`
apache_read_squirrelmail_data(system_mail_t)
apache_append_squirrelmail_data(system_mail_t)
# apache should set close-on-exec
apache_dontaudit_append_log(system_mail_t)
apache_dontaudit_rw_stream_socket(system_mail_t)
apache_dontaudit_rw_tcp_socket(system_mail_t)
apache_dontaudit_rw_sys_script_stream_socket(system_mail_t)
')
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optional_policy(`arpwatch.te',`
arpwatch_rw_tmp_files(system_mail_t)
')
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optional_policy(`cron.te',`
cron_read_system_job_tmp_files(system_mail_t)
')
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optional_policy(`cvs.te',`
cvs_read_data(system_mail_t)
')
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optional_policy(`logrotate.te',`
logrotate_read_tmp_files(system_mail_t)
')
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optional_policy(`nis.te',`
nis_use_ypbind(system_mail_t)
')
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optional_policy(`nscd.te',`
nscd_use_socket(system_mail_t)
')
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optional_policy(`postfix.te',`
postfix_stub(system_mail_t)
allow system_mail_t etc_aliases_t:dir create_dir_perms;
allow system_mail_t etc_aliases_t:file create_file_perms;
allow system_mail_t etc_aliases_t:lnk_file create_lnk_perms;
allow system_mail_t etc_aliases_t:sock_file create_file_perms;
allow system_mail_t etc_aliases_t:fifo_file create_file_perms;
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files_create_etc_config(system_mail_t,etc_aliases_t,{ file lnk_file sock_file fifo_file })
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optional_policy(`crond.te',`
cron_crw_tcp_socket(system_mail_t)
')
')
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optional_policy(`sendmail.te',`
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sendmail_stub(system_mail_t)
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allow system_mail_t etc_mail_t:dir { getattr search };
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# sendmail -q
allow system_mail_t mqueue_spool_t:dir rw_dir_perms;
allow system_mail_t mqueue_spool_t:file create_file_perms;
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')
ifdef(`TODO',`
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optional_policy(`procmail.te',`
procmail_exec(system_mail_t)
')
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optional_policy(`sendmail.te',`
allow system_mail_t { var_t var_spool_t }:dir getattr;
dontaudit system_mail_t userpty_type:chr_file { getattr read write };
optional_policy(`crond.te', `
dontaudit system_mail_t system_crond_tmp_t:file append;
')
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')
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ifdef(`targeted_policy',`
allow system_mail_t { var_t var_spool_t }:dir getattr;
',`
# allow the sysadmin to do "mail someone < /home/user/whatever"
allow sysadm_mail_t user_home_dir_type:dir search;
r_dir_file(sysadm_mail_t, user_home_type)
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')
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optional_policy(`qmail.te',`
allow system_mail_t qmail_etc_t:dir search;
allow system_mail_t qmail_etc_t:{ file lnk_file } read;
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')
optional_policy(`arpwatch.te',`
# why is mail delivered to a directory of type arpwatch_data_t?
arpwatch_search_data_dir(mta_delivery_agent)
arpwatch_manage_tmp_files(system_mail_t)
arpwatch_manage_tmp_files(mta_user_agent)
ifdef(`hide_broken_symptoms', `
arpwatch_dontaudit_rw_packet_socket(system_mail_t)
arpwatch_dontaudit_rw_packet_socket(mta_user_agent)
')
')
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') dnl end TODO