policy_module(yam, 1.3.0)

########################################
#
# Declarations
#

type yam_t alias yam_crond_t;
type yam_exec_t;
application_domain(yam_t, yam_exec_t)

type yam_content_t;
files_mountpoint(yam_content_t)

type yam_etc_t;
files_config_file(yam_etc_t)

type yam_tmp_t;
files_tmp_file(yam_tmp_t)

########################################
#
# Local policy
#

allow yam_t self:capability { chown fowner fsetid dac_override };
allow yam_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap };
allow yam_t self:process execmem;
allow yam_t self:fd use;
allow yam_t self:fifo_file rw_fifo_file_perms;
allow yam_t self:unix_stream_socket { create_stream_socket_perms connectto };
allow yam_t self:unix_dgram_socket { create_socket_perms sendto };
allow yam_t self:shm create_shm_perms;
allow yam_t self:sem create_sem_perms;
allow yam_t self:msgq create_msgq_perms;
allow yam_t self:msg { send receive };
allow yam_t self:tcp_socket create_socket_perms;

# Update the content being managed by yam.
manage_dirs_pattern(yam_t, yam_content_t, yam_content_t)
manage_files_pattern(yam_t, yam_content_t, yam_content_t)
manage_lnk_files_pattern(yam_t, yam_content_t, yam_content_t)

allow yam_t yam_etc_t:file read_file_perms;
files_search_etc(yam_t)

manage_files_pattern(yam_t, yam_tmp_t, yam_tmp_t)
manage_dirs_pattern(yam_t, yam_tmp_t, yam_tmp_t)
files_tmp_filetrans(yam_t, yam_tmp_t, { file dir })

kernel_read_kernel_sysctls(yam_t)
kernel_read_proc_symlinks(yam_t)
# Python works fine without reading /proc/meminfo
kernel_dontaudit_read_system_state(yam_t)

corecmd_exec_shell(yam_t)
corecmd_exec_bin(yam_t)

# Rsync and lftp need to network.  They also set files attributes to
# match whats on the remote server.
corenet_all_recvfrom_unlabeled(yam_t)
corenet_all_recvfrom_netlabel(yam_t)
corenet_tcp_sendrecv_generic_if(yam_t)
corenet_tcp_sendrecv_all_nodes(yam_t)
corenet_tcp_sendrecv_all_ports(yam_t)
corenet_tcp_connect_http_port(yam_t)
corenet_tcp_connect_rsync_port(yam_t)
corenet_sendrecv_http_client_packets(yam_t)
corenet_sendrecv_rsync_client_packets(yam_t)

# mktemp
dev_read_urand(yam_t)

files_read_etc_files(yam_t)
files_read_etc_runtime_files(yam_t)
# /usr/share/createrepo/genpkgmetadata.py:
files_exec_usr_files(yam_t)
# Programs invoked to build package lists need various permissions.
# genpkglist creates tmp files in /var/cache/apt/genpkglist
files_rw_var_files(yam_t)

fs_search_auto_mountpoints(yam_t)
# Content can also be on ISO image files.
fs_read_iso9660_files(yam_t)

logging_send_syslog_msg(yam_t)

miscfiles_read_localization(yam_t)

seutil_read_config(yam_t)

sysnet_dns_name_resolve(yam_t)
sysnet_read_config(yam_t)

userdom_use_user_terminals(yam_t)
userdom_use_unpriv_users_fds(yam_t)
# Reading dotfiles...
# cjp: ?
userdom_search_user_home_dirs(yam_t)

# The whole point of this program is to make updates available on a
# local web server.  Need to go through /var to get to /var/yam
# Go through /var/www to get to /var/www/yam
apache_search_sys_content(yam_t)

optional_policy(`
	cron_system_entry(yam_t, yam_exec_t)
')

optional_policy(`
	mount_domtrans(yam_t)
')

optional_policy(`
	nis_use_ypbind(yam_t)
')

optional_policy(`
	nscd_socket_use(yam_t)
')

optional_policy(`
	rsync_exec(yam_t)
')