Index: policy/modules/services/milters.te =================================================================== --- policy/modules/services/milters.te (revision 0) +++ policy/modules/services/milters.te (revision 0) @@ -0,0 +1,44 @@ +policy_module(milters,0.0.7) + +require { + attribute port_type; +} + +type milter_port_t, port_type; + +#============= milter-regex policy ============== +milter_template(regex) + +# Config is in /etc/mail/milter-regex.conf +mta_read_config(milter_regex_t) + +# The milter creates a socket in /var/spool/milter-regex/ +# for communication with sendmail +files_search_spool(milter_regex_t) +manage_sock_files_pattern(milter_regex_t,milter_regex_spool_t,milter_regex_spool_t) + +# It removes any existing socket (not owned by root) whilst running as root +# and then calls setgid() and setuid() to drop privileges +allow milter_regex_t self:capability { setuid setgid dac_override }; + + +#============= spamass-milter policy ============== +milter_template(spamass) + +# The milter creates a socket in /var/run/spamass-milter/ +# for communication with sendmail +manage_files_pattern(milter_spamass_t,milter_spamass_var_run_t,milter_spamass_var_run_t) +manage_sock_files_pattern(milter_spamass_t,milter_spamass_var_run_t,milter_spamass_var_run_t) + +# The main job of the milter is to pipe spam through spamc and act on the result +# +# The spamassassin_domtrans_spamc interface in Fedora 9 ??? +#spamassassin_domtrans_spamc(milter_spamass_t) + +# When used with -b or -B options, the milter invokes sendmail to send mail +# to a spamtrap address, using popen() +corecmd_exec_shell(milter_spamass_t) +corecmd_read_bin_symlinks(milter_spamass_t) +corecmd_search_bin(milter_spamass_t) +kernel_read_system_state(milter_spamass_t) +mta_send_mail(milter_spamass_t) Index: policy/modules/services/sendmail.te =================================================================== --- policy/modules/services/sendmail.te (revision 2710) +++ policy/modules/services/sendmail.te (working copy) @@ -112,6 +112,14 @@ ') optional_policy(` + milter_regex_stream_connect(sendmail_t) +') + +optional_policy(` + milter_spamass_stream_connect(sendmail_t) +') + +optional_policy(` postfix_exec_master(sendmail_t) postfix_read_config(sendmail_t) postfix_search_spool(sendmail_t) Index: policy/modules/services/milters.fc =================================================================== --- policy/modules/services/milters.fc (revision 0) +++ policy/modules/services/milters.fc (revision 0) @@ -0,0 +1,14 @@ +#================= contexts for milter-regex ================= + +/usr/sbin/milter-regex -- gen_context(system_u:object_r:milter_regex_exec_t,s0) + +/var/spool/milter-regex(/.*)? gen_context(system_u:object_r:milter_regex_spool_t,s0) + +#================= contexts for spamass-milter ================= + +/usr/sbin/spamass-milter -- gen_context(system_u:object_r:milter_spamass_exec_t,s0) + +/var/run/spamass-milter\.pid -- gen_context(system_u:object_r:milter_spamass_var_run_t,s0) +/var/run/spamass-milter(/.*)? gen_context(system_u:object_r:milter_spamass_var_run_t,s0) + + Index: policy/modules/services/mta.te =================================================================== --- policy/modules/services/mta.te (revision 2710) +++ policy/modules/services/mta.te (working copy) @@ -154,3 +154,7 @@ cron_read_system_job_tmp_files(mta_user_agent) ') ') + +optional_policy(` + milter_spamass_rw_stream_sockets(system_mail_t) +') Index: policy/modules/services/milters.if =================================================================== --- policy/modules/services/milters.if (revision 0) +++ policy/modules/services/milters.if (revision 0) @@ -0,0 +1,117 @@ +## Milter mail filters + +######################################## +## +## Create a set of derived types for various +## mail filter applications using the milter interface. +## +## +## +## The name to be used for deriving type names. +## +## +# +template(`milter_template',` + + # Type that the milter application runs as + type milter_$1_t; + domain_type(milter_$1_t) + role system_r types milter_$1_t; + + # Type for the executable file + type milter_$1_exec_t; + init_daemon_domain(milter_$1_t, milter_$1_exec_t) + + # This type is for pidfiles etc. + type milter_$1_var_run_t; + files_type(milter_$1_var_run_t); + + # This type is for spool/cache data etc. + type milter_$1_cache_t; + files_type(milter_$1_cache_t); + + # This type is for spool/cache data etc. + type milter_$1_spool_t; + files_type(milter_$1_spool_t); + + # This type is for state data etc. + type milter_$1_var_lib_t; + files_type(milter_$1_var_lib_t); + + # Generic rules from policygentool + files_read_etc_files(milter_$1_t) + libs_use_ld_so(milter_$1_t) + libs_use_shared_libs(milter_$1_t) + miscfiles_read_localization(milter_$1_t) + sysnet_dns_name_resolve(milter_$1_t) + init_use_fds(milter_$1_t) + init_use_script_ptys(milter_$1_t) + domain_use_interactive_fds(milter_$1_t) + + # Allow communication with MTA over a TCP socket + # hack since this port has no interfaces since it does not have net_contexts + gen_require(` + type milter_port_t; + ') + allow milter_$1_t milter_port_t:tcp_socket name_bind; + corenet_tcp_bind_generic_node(milter_$1_t) + allow milter_$1_t self:tcp_socket { listen accept }; + + # Things that most milters will need to do + allow milter_$1_t self:fifo_file rw_fifo_file_perms; + logging_send_syslog_msg(milter_$1_t) + +') + +######################################## +## +## MTA communication with spamass-milter socket +## +## +## +## Domain allowed access. +## +## +# +interface(`milter_spamass_stream_connect',` + gen_require(` + type milter_spamass_var_run_t, milter_spamass_t; + ') + stream_connect_pattern($1,milter_spamass_var_run_t,milter_spamass_var_run_t,milter_spamass_t) +') + +######################################## +## +## Allow read/write unix stream sockets from spamass-milter +## +## +## +## Domain allowed access. +## +## +# +interface(`milter_spamass_rw_stream_sockets',` + gen_require(` + type milter_spamass_t; + ') + + allow $1 milter_spamass_t:unix_stream_socket { read write }; +') + + +######################################## +## +## MTA communication with milter-regex socket +## +## +## +## Domain allowed access. +## +## +# +interface(`milter_regex_stream_connect',` + gen_require(` + type milter_regex_spool_t, milter_regex_t; + ') + stream_connect_pattern($1,milter_regex_spool_t,milter_regex_spool_t,milter_regex_t) +') Index: policy/modules/services/spamassassin.fc =================================================================== --- policy/modules/services/spamassassin.fc (revision 2710) +++ policy/modules/services/spamassassin.fc (working copy) @@ -10,7 +10,6 @@ /var/lib/spamassassin(/.*)? gen_context(system_u:object_r:spamd_var_lib_t,s0) /var/run/spamassassin(/.*)? gen_context(system_u:object_r:spamd_var_run_t,s0) -/var/run/spamass-milter(/.*)? gen_context(system_u:object_r:spamd_var_run_t,s0) /var/spool/spamassassin(/.*)? gen_context(system_u:object_r:spamd_spool_t,s0) /var/spool/spamd(/.*)? gen_context(system_u:object_r:spamd_spool_t,s0)