add courier, bug 1520

refpolicy/policy/modules/services/courier.fc

@@ -0,0 +1,21 @@
+/etc/courier(/.*)?				gen_context(system_u:object_r:courier_etc_t,s0)
+
+/usr/bin/imapd				--	gen_context(system_u:object_r:courier_pop_exec_t,s0)
+
+/usr/sbin/courierlogger			--	gen_context(system_u:object_r:courier_exec_t,s0)
+/usr/sbin/courierldapaliasd		--	gen_context(system_u:object_r:courier_exec_t,s0)
+/usr/sbin/couriertcpd			--	gen_context(system_u:object_r:courier_tcpd_exec_t,s0)
+
+/usr/lib(64)?/courier/authlib/.*	--	gen_context(system_u:object_r:courier_authdaemon_exec_t,s0)
+/usr/lib(64)?/courier/courier/.*	--	gen_context(system_u:object_r:courier_exec_t,s0)
+/usr/lib(64)?/courier/courier/courierpop.* --	gen_context(system_u:object_r:courier_pop_exec_t,s0)
+/usr/lib(64)?/courier/courier/imaplogin --	gen_context(system_u:object_r:courier_pop_exec_t,s0)
+/usr/lib(64)?/courier/courier/pcpd	--	gen_context(system_u:object_r:courier_pcp_exec_t,s0)
+/usr/lib(64)?/courier/imapd		--	gen_context(system_u:object_r:courier_pop_exec_t,s0)
+/usr/lib(64)?/courier/pop3d		--	gen_context(system_u:object_r:courier_pop_exec_t,s0)
+/usr/lib(64)?/courier/rootcerts(/.*)?		gen_context(system_u:object_r:courier_etc_t,s0)
+/usr/lib(64)?/courier/sqwebmail/cleancache\.pl -- gen_context(system_u:object_r:sqwebmail_cron_exec_t,s0)
+
+/var/lib/courier(/.*)?			--	gen_context(system_u:object_r:courier_var_lib_t,s0)
+
+/var/run/courier(/.*)?			--	gen_context(system_u:object_r:courier_var_run_t,s0)

refpolicy/policy/modules/services/courier.if

@@ -0,0 +1,146 @@
+## <summary>Courier IMAP and POP3 email servers</summary>
+
+########################################
+## <summary>
+##	Template for creating courier server processes.
+## </summary>
+## <param name="prefix">
+##	<summary>
+##	Prefix name of the server process.
+##	</summary>
+## </param>
+#
+template(`courier_domain_template',`
+
+	##############################
+	#
+	# Declarations
+	#
+
+	type courier_$1_t;
+	type courier_$1_exec_t;
+	init_daemon_domain(courier_$1_t,courier_$1_exec_t)
+
+	##############################
+	#
+	# Declarations
+	#
+
+	allow courier_$1_t self:capability dac_override;
+	dontaudit courier_$1_t self:capability sys_tty_config;
+	allow courier_$1_t self:process { setpgid signal_perms };
+	allow courier_$1_t self:fifo_file { read write getattr };
+	allow courier_$1_t self:tcp_socket create_stream_socket_perms;
+	allow courier_$1_t self:udp_socket create_socket_perms;
+
+	can_exec(courier_$1_t, courier_$1_exec_t)
+
+	allow courier_$1_t courier_etc_t:file r_file_perms;
+	allow courier_$1_t courier_etc_t:dir r_dir_perms;
+
+	allow courier_$1_t courier_var_run_t:dir rw_dir_perms;
+	allow courier_$1_t courier_var_run_t:file create_file_perms;
+	allow courier_$1_t courier_var_run_t:lnk_file create_lnk_perms;
+	allow courier_$1_t courier_var_run_t:sock_file create_file_perms;
+	files_search_pids(courier_$1_t)
+
+	kernel_read_system_state(courier_$1_t)
+	kernel_read_kernel_sysctls(courier_$1_t)
+
+	corecmd_exec_bin(courier_$1_t)
+
+	corenet_tcp_sendrecv_generic_if(courier_$1_t)
+	corenet_udp_sendrecv_generic_if(courier_$1_t)
+	corenet_raw_sendrecv_generic_if(courier_$1_t)
+	corenet_tcp_sendrecv_all_nodes(courier_$1_t)
+	corenet_udp_sendrecv_all_nodes(courier_$1_t)
+	corenet_raw_sendrecv_all_nodes(courier_$1_t)
+	corenet_tcp_sendrecv_all_ports(courier_$1_t)
+	corenet_udp_sendrecv_all_ports(courier_$1_t)
+	corenet_non_ipsec_sendrecv(courier_$1_t)
+	corenet_tcp_bind_all_nodes(courier_$1_t)
+	corenet_udp_bind_all_nodes(courier_$1_t)
+
+	dev_read_sysfs(courier_$1_t)
+
+	domain_use_interactive_fds(courier_$1_t)
+
+	files_read_etc_files(courier_$1_t)
+	files_read_etc_runtime_files(courier_$1_t)
+	files_read_usr_files(courier_$1_t)
+
+	fs_getattr_xattr_fs(courier_$1_t)
+	fs_search_auto_mountpoints(courier_$1_t)
+
+	term_dontaudit_use_console(courier_$1_t)
+
+	init_use_fds(courier_$1_t)
+	init_use_script_ptys(courier_$1_t)
+
+	libs_use_ld_so(courier_$1_t)
+	libs_use_shared_libs(courier_$1_t)
+
+	logging_send_syslog_msg(courier_$1_t)
+
+	sysnet_read_config(courier_$1_t)
+
+	userdom_dontaudit_use_unpriv_user_fds(courier_$1_t)
+
+	ifdef(`targeted_policy',`
+		term_dontaudit_use_unallocated_ttys(courier_$1_t)
+		term_dontaudit_use_generic_ptys(courier_$1_t)
+		files_dontaudit_read_root_files(courier_$1_t)
+	')
+
+	optional_policy(`
+		seutil_sigchld_newrole(courier_$1_t)
+	')
+
+	optional_policy(`
+		udev_read_db(courier_$1_t)
+	')
+')
+
+########################################
+## <summary>
+##	Execute the courier authentication daemon with
+##	a domain transition.
+## </summary>
+## <param name="prefix">
+##	<summary>
+##	Domain allowed access.
+##	</summary>
+## </param>
+#
+interface(`courier_domtrans_authdaemon',`
+	gen_require(`
+		type courier_authdaemon_t, courier_authdaemon_exec_t;
+	')
+
+	domain_auto_trans($1, courier_authdaemon_exec_t, courier_authdaemon_t)
+	allow courier_authdaemon_t $1:fd use;
+	allow courier_authdaemon_t $1:fifo_file rw_file_perms;
+	allow courier_authdaemon_t $1:process sigchld;
+')
+
+########################################
+## <summary>
+##	Execute the courier POP3 and IMAP server with
+##	a domain transition.
+## </summary>
+## <param name="prefix">
+##	<summary>
+##	Domain allowed access.
+##	</summary>
+## </param>
+#
+interface(`courier_domtrans_pop',`
+	gen_require(`
+		type courier_pop_t, courier_pop_exec_t;
+	')
+
+	domain_auto_trans($1, courier_pop_exec_t, courier_pop_t)
+	allow courier_pop_t $1:fd use;
+	allow courier_pop_t $1:fifo_file rw_file_perms;
+	allow courier_pop_t $1:process sigchld;
+')

refpolicy/policy/modules/services/courier.te

@@ -0,0 +1,141 @@
+
+policy_module(courier,1.0.0)
+
+########################################
+#
+# Declarations
+#
+
+courier_domain_template(authdaemon)
+
+type courier_etc_t;
+files_type(courier_etc_t)
+
+courier_domain_template(pcp)
+
+courier_domain_template(pop)
+
+courier_domain_template(tcpd)
+
+type courier_var_lib_t;
+files_type(courier_var_lib_t)
+
+type courier_var_run_t;
+files_pid_file(courier_var_run_t)
+
+type courier_exec_t;
+files_type(courier_exec_t)
+
+courier_domain_template(sqwebmail)
+typealias courier_sqwebmail_exec_t alias sqwebmail_cron_exec_t;
+
+########################################
+#
+# Authdaemon local policy
+#
+
+allow courier_authdaemon_t self:capability { setuid setgid sys_tty_config };
+allow courier_authdaemon_t self:unix_stream_socket connectto;
+
+can_exec(courier_authdaemon_t, courier_exec_t)
+
+allow courier_authdaemon_t courier_tcpd_t:fd use;
+allow courier_authdaemon_t courier_tcpd_t:tcp_socket rw_stream_socket_perms;
+allow courier_authdaemon_t courier_tcpd_t:fifo_file rw_file_perms;
+
+allow courier_authdaemon_t courier_tcpd_t:tcp_socket rw_stream_socket_perms;
+allow courier_authdaemon_t courier_tcpd_t:unix_stream_socket rw_stream_socket_perms;
+allow courier_authdaemon_t courier_tcpd_t:process sigchld;
+allow courier_authdaemon_t courier_tcpd_t:fd use;
+allow courier_authdaemon_t courier_tcpd_t:tcp_socket rw_stream_socket_perms;
+allow courier_authdaemon_t courier_tcpd_t:fifo_file rw_file_perms;
+
+corecmd_search_sbin(courier_authdaemon_t)
+
+# for SSP
+dev_read_urand(courier_authdaemon_t)
+
+files_getattr_tmp_dirs(courier_authdaemon_t)
+
+auth_domtrans_chk_passwd(courier_authdaemon_t)
+
+libs_read_lib_files(courier_authdaemon_t)
+
+miscfiles_read_localization(courier_authdaemon_t)
+
+# should not be needed!
+userdom_search_unpriv_users_home_dirs(courier_authdaemon_t)
+userdom_dontaudit_search_sysadm_home_dirs(courier_authdaemon_t)
+
+courier_domtrans_pop(courier_authdaemon_t)
+
+########################################
+#
+# Calendar (PCP) local policy
+#
+
+allow courier_pcp_t self:capability { setuid setgid };
+
+dev_read_rand(courier_pcp_t)
+
+########################################
+#
+# POP3/IMAP local policy
+#
+
+allow courier_pop_t courier_authdaemon_t:tcp_socket rw_stream_socket_perms;
+allow courier_pop_t courier_authdaemon_t:process sigchld;
+
+allow courier_pop_t courier_tcpd_t:{ unix_stream_socket tcp_socket } rw_stream_socket_perms;
+
+# inherits file handle - should it?
+allow courier_pop_t courier_var_lib_t:file { read write };
+
+miscfiles_read_localization(courier_pop_t)
+
+courier_domtrans_authdaemon(courier_pop_t)
+
+# do the actual work (read the Maildir)
+userdom_manage_unpriv_users_home_content_files(courier_pop_t)
+# cjp: the fact that this is different for pop vs imap means that
+# there should probably be a courier_pop_t and courier_imap_t
+# this should also probably be a separate type too instead of
+# the regular home dir
+userdom_manage_unpriv_users_home_content_dirs(courier_pop_t)
+
+########################################
+#
+# TCPd local policy
+#
+
+allow courier_tcpd_t self:capability kill;
+
+can_exec(courier_tcpd_t, courier_exec_t)
+
+allow courier_tcpd_t courier_var_lib_t:dir rw_dir_perms;
+allow courier_tcpd_t courier_var_lib_t:file manage_file_perms;
+allow courier_tcpd_t courier_var_lib_t:lnk_file create_lnk_perms;
+files_search_var_lib(courier_tcpd_t)
+
+corecmd_search_sbin(courier_tcpd_t)
+
+corenet_tcp_bind_pop_port(courier_tcpd_t)
+
+# for TLS
+dev_read_rand(courier_tcpd_t)
+dev_read_urand(courier_tcpd_t)
+
+miscfiles_read_localization(courier_tcpd_t)
+
+courier_domtrans_pop(courier_tcpd_t)
+
+########################################
+#
+# Webmail local policy
+#
+
+kernel_read_kernel_sysctls(courier_sqwebmail_t)
+
+optional_policy(`
+	cron_system_entry(courier_sqwebmail_t,courier_sqwebmail_exec_t)
+')

refpolicy/policy/modules/system/userdomain.if

@@ -4350,6 +4350,49 @@ interface(`userdom_read_unpriv_users_home_content_files',`
 	allow $1 user_home_type:file r_file_perms;
 ')
 
+########################################
+## <summary>
+##	Create, read, write, and delete directories in
+##	unprivileged users home directories.
+## </summary>
+## <param name="domain">
+##	<summary>
+##	Domain allowed access.
+##	</summary>
+## </param>
+#
+interface(`userdom_manage_unpriv_users_home_content_dirs',`
+	gen_require(`
+		attribute user_home_dir_type, user_home_type;
+	')
+
+	files_search_home($1)
+	allow $1 user_home_dir_type:dir search_dir_perms;
+	allow $1 user_home_type:dir manage_dir_perms;
+')
+
+########################################
+## <summary>
+##	Create, read, write, and delete files in
+##	unprivileged users home directories.
+## </summary>
+## <param name="domain">
+##	<summary>
+##	Domain allowed access.
+##	</summary>
+## </param>
+#
+interface(`userdom_manage_unpriv_users_home_content_files',`
+	gen_require(`
+		attribute user_home_dir_type, user_home_type;
+	')
+
+	files_search_home($1)
+	allow $1 user_home_dir_type:dir search_dir_perms;
+	allow $1 user_home_type:dir rw_dir_perms;
+	allow $1 user_home_type:file manage_file_perms;
+')
+
 ########################################
 ## <summary>
 ##	Set the attributes of user ptys.

refpolicy/policy/modules/system/userdomain.te

@@ -1,5 +1,5 @@
 
-policy_module(userdomain,1.3.9)
+policy_module(userdomain,1.3.10)
 
 gen_require(`
 	role sysadm_r, staff_r, user_r;