184 lines
5.0 KiB
Plaintext
184 lines
5.0 KiB
Plaintext
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policy_module(mta,1.0.2)
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########################################
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#
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# Declarations
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#
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attribute mta_user_agent;
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attribute mailserver_delivery;
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attribute mailserver_domain;
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attribute mailserver_sender;
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attribute user_mail_domain;
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type etc_aliases_t;
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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;
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files_type(mqueue_spool_t)
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type mail_spool_t;
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files_type(mail_spool_t)
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type sendmail_exec_t;
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files_type(sendmail_exec_t)
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mta_base_mail_template(system)
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role system_r types system_mail_t;
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# cjp: need to resolve this, but require{}
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# does not work in the else part of the optional
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#ifdef(`strict_policy',`
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# optional_policy(`sendmail',`',`
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# init_system_domain(system_mail_t,sendmail_exec_t)
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# ')
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#')
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########################################
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#
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# System mail local policy
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#
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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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kernel_read_system_state(system_mail_t)
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kernel_read_network_state(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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init_use_script_pty(system_mail_t)
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userdom_use_sysadm_terms(system_mail_t)
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ifdef(`hide_broken_symptoms',`
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# Red Hat systems seem to have a stray
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# fds open from the initrd
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ifdef(`distro_redhat',`
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kernel_dontaudit_use_fd(system_mail_t)
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storage_dontaudit_read_fixed_disk(system_mail_t)
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')
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')
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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;
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allow system_mail_t mail_spool_t:file create_file_perms;
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allow system_mail_t mail_spool_t:lnk_file create_lnk_perms;
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allow system_mail_t mail_spool_t:fifo_file rw_file_perms;
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allow system_mail_t mqueue_spool_t:dir create_dir_perms;
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allow system_mail_t mqueue_spool_t:file create_file_perms;
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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?
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# also for delivering mail to maildir
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# cjp: fix this to generic_user interfaces
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userdom_manage_user_home_subdirs(user,mailserver_delivery)
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userdom_manage_user_home_subdir_files(user,mailserver_delivery)
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userdom_manage_user_home_subdir_symlinks(user,mailserver_delivery)
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userdom_manage_user_home_subdir_pipes(user,mailserver_delivery)
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userdom_manage_user_home_subdir_sockets(user,mailserver_delivery)
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userdom_create_user_home(user,mailserver_delivery,{ dir file lnk_file fifo_file sock_file })
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# cjp: another require-in-else to resolve
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# optional_policy(`postfix',`',`
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corecmd_exec_bin(system_mail_t)
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corecmd_exec_sbin(system_mail_t)
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domain_exec_all_entry_files(system_mail_t)
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files_exec_etc_files(system_mail_t)
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libs_use_ld_so(system_mail_t)
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libs_use_shared_libs(system_mail_t)
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libs_exec_ld_so(system_mail_t)
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libs_exec_lib_files(system_mail_t)
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# ')
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')
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optional_policy(`apache',`
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apache_read_squirrelmail_data(system_mail_t)
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apache_append_squirrelmail_data(system_mail_t)
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# apache should set close-on-exec
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apache_dontaudit_append_log(system_mail_t)
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apache_dontaudit_rw_stream_socket(system_mail_t)
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apache_dontaudit_rw_tcp_socket(system_mail_t)
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apache_dontaudit_rw_sys_script_stream_socket(system_mail_t)
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')
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optional_policy(`arpwatch',`
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arpwatch_rw_tmp_files(system_mail_t)
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')
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optional_policy(`cron',`
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cron_read_system_job_tmp_files(system_mail_t)
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cron_read_system_job_tmp_files(mta_user_agent)
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')
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optional_policy(`cvs',`
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cvs_read_data(system_mail_t)
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')
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optional_policy(`logrotate',`
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logrotate_read_tmp_files(system_mail_t)
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')
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optional_policy(`postfix',`
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postfix_stub(system_mail_t)
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allow system_mail_t etc_aliases_t:dir create_dir_perms;
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allow system_mail_t etc_aliases_t:file create_file_perms;
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allow system_mail_t etc_aliases_t:lnk_file create_lnk_perms;
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allow system_mail_t etc_aliases_t:sock_file create_file_perms;
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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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domain_use_wide_inherit_fd(system_mail_t)
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optional_policy(`crond',`
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cron_crw_tcp_socket(system_mail_t)
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')
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allow mta_user_agent sysadm_t:fifo_file { read write };
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type_transition postfix_master_t postfix_etc_t:dir etc_aliases_t;
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# postfix needs this for newaliases
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allow { system_mail_t sysadm_mail_t } tmp_t:dir getattr;
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')
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ifdef(`TODO',`
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optional_policy(`sendmail',`
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dontaudit system_mail_t userpty_type:chr_file { getattr read write };
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optional_policy(`crond',`
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dontaudit system_mail_t system_crond_tmp_t:file append;
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')
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')
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ifdef(`strict_policy',`
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# allow the sysadmin to do "mail someone < /home/user/whatever"
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allow sysadm_mail_t user_home_dir_type:dir search;
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r_dir_file(sysadm_mail_t, user_home_type)
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')
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') dnl end TODO
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optional_policy(`arpwatch',`
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# why is mail delivered to a directory of type arpwatch_data_t?
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arpwatch_search_data(mailserver_delivery)
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arpwatch_manage_tmp_files(system_mail_t)
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arpwatch_manage_tmp_files(mta_user_agent)
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ifdef(`hide_broken_symptoms', `
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arpwatch_dontaudit_rw_packet_socket(system_mail_t)
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arpwatch_dontaudit_rw_packet_socket(mta_user_agent)
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')
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')
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