LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

# SELinux policy version.
# Must be <= /selinux/policyvers reported by the Android kernel.
# Must be within the compatibility range reported by checkpolicy -V.
POLICYVERS ?= 26

MLS_SENS=1
MLS_CATS=1024

# Quick edge case error detection for BOARD_SEPOLICY_REPLACE.
# Builds the singular path for each replace file.
sepolicy_replace_paths :=
$(foreach pf, $(BOARD_SEPOLICY_REPLACE), \
  $(if $(filter $(pf), $(BOARD_SEPOLICY_UNION)), \
    $(error Ambiguous request for sepolicy $(pf). Appears in both \
      BOARD_SEPOLICY_REPLACE and BOARD_SEPOLICY_UNION), \
  ) \
  $(eval _paths := $(filter-out $(BOARD_SEPOLICY_IGNORE), \
  $(wildcard $(addsuffix /$(pf), $(BOARD_SEPOLICY_DIRS))))) \
  $(eval _occurrences := $(words $(_paths))) \
  $(if $(filter 0,$(_occurrences)), \
    $(error No sepolicy file found for $(pf) in $(BOARD_SEPOLICY_DIRS)), \
  ) \
  $(if $(filter 1, $(_occurrences)), \
    $(eval sepolicy_replace_paths += $(_paths)), \
    $(error Multiple occurrences of replace file $(pf) in $(_paths)) \
  ) \
  $(if $(filter 0, $(words $(wildcard $(addsuffix /$(pf), $(LOCAL_PATH))))), \
    $(error Specified the sepolicy file $(pf) in BOARD_SEPOLICY_REPLACE, \
      but none found in $(LOCAL_PATH)), \
  ) \
)

# Quick edge case error detection for BOARD_SEPOLICY_UNION.
# This ensures that a requested union file exists somewhere
# in one of the listed BOARD_SEPOLICY_DIRS.
$(foreach pf, $(BOARD_SEPOLICY_UNION), \
  $(if $(filter 0, $(words $(wildcard $(addsuffix /$(pf), $(BOARD_SEPOLICY_DIRS))))), \
    $(error No sepolicy file found for $(pf) in $(BOARD_SEPOLICY_DIRS)), \
  ) \
)

# Builds paths for all requested policy files w.r.t
# both BOARD_SEPOLICY_REPLACE and BOARD_SEPOLICY_UNION
# product variables.
# $(1): the set of policy name paths to build
build_policy = $(foreach type, $(1), \
  $(filter-out $(BOARD_SEPOLICY_IGNORE), \
    $(foreach expanded_type, $(notdir $(wildcard $(addsuffix /$(type), $(LOCAL_PATH)))), \
      $(if $(filter $(expanded_type), $(BOARD_SEPOLICY_REPLACE)), \
        $(wildcard $(addsuffix $(expanded_type), $(sort $(dir $(sepolicy_replace_paths))))), \
        $(LOCAL_PATH)/$(expanded_type) \
      ) \
    ) \
    $(foreach union_policy, $(wildcard $(addsuffix /$(type), $(BOARD_SEPOLICY_DIRS))), \
      $(if $(filter $(notdir $(union_policy)), $(BOARD_SEPOLICY_UNION)), \
        $(union_policy), \
      ) \
    ) \
  ) \
)

sepolicy_build_files := security_classes \
                        initial_sids \
                        access_vectors \
                        global_macros \
                        neverallow_macros \
                        mls_macros \
                        mls \
                        policy_capabilities \
                        te_macros \
                        attributes \
                        *.te \
                        roles \
                        users \
                        initial_sid_contexts \
                        fs_use \
                        genfs_contexts \
                        port_contexts

##################################
include $(CLEAR_VARS)

LOCAL_MODULE := sepolicy
LOCAL_MODULE_CLASS := ETC
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)

include $(BUILD_SYSTEM)/base_rules.mk

sepolicy_policy.conf := $(intermediates)/policy.conf
$(sepolicy_policy.conf): PRIVATE_MLS_SENS := $(MLS_SENS)
$(sepolicy_policy.conf): PRIVATE_MLS_CATS := $(MLS_CATS)
$(sepolicy_policy.conf) : $(call build_policy, $(sepolicy_build_files))
	@mkdir -p $(dir $@)
	$(hide) m4 -D mls_num_sens=$(PRIVATE_MLS_SENS) -D mls_num_cats=$(PRIVATE_MLS_CATS) \
		-D target_build_variant=$(TARGET_BUILD_VARIANT) \
		-s $^ > $@
	$(hide) sed '/dontaudit/d' $@ > $@.dontaudit

$(LOCAL_BUILT_MODULE) : $(sepolicy_policy.conf) $(HOST_OUT_EXECUTABLES)/checkpolicy
	@mkdir -p $(dir $@)
	$(hide) $(HOST_OUT_EXECUTABLES)/checkpolicy -M -c $(POLICYVERS) -o $@ $<
	$(hide) $(HOST_OUT_EXECUTABLES)/checkpolicy -M -c $(POLICYVERS) -o $(dir $<)/$(notdir $@).dontaudit $<.dontaudit

built_sepolicy := $(LOCAL_BUILT_MODULE)
sepolicy_policy.conf :=

##################################
include $(CLEAR_VARS)

LOCAL_MODULE := sepolicy.recovery
LOCAL_MODULE_CLASS := ETC
LOCAL_MODULE_TAGS := eng

include $(BUILD_SYSTEM)/base_rules.mk

sepolicy_policy_recovery.conf := $(intermediates)/policy_recovery.conf
$(sepolicy_policy_recovery.conf): PRIVATE_MLS_SENS := $(MLS_SENS)
$(sepolicy_policy_recovery.conf): PRIVATE_MLS_CATS := $(MLS_CATS)
$(sepolicy_policy_recovery.conf) : $(call build_policy, $(sepolicy_build_files))
	@mkdir -p $(dir $@)
	$(hide) m4 -D mls_num_sens=$(PRIVATE_MLS_SENS) -D mls_num_cats=$(PRIVATE_MLS_CATS) \
		-D target_build_variant=$(TARGET_BUILD_VARIANT) \
		-D target_recovery=true \
		-s $^ > $@

$(LOCAL_BUILT_MODULE) : $(sepolicy_policy_recovery.conf) $(HOST_OUT_EXECUTABLES)/checkpolicy
	@mkdir -p $(dir $@)
	$(hide) $(HOST_OUT_EXECUTABLES)/checkpolicy -M -c $(POLICYVERS) -o $@ $<

built_sepolicy_recovery := $(LOCAL_BUILT_MODULE)
sepolicy_policy_recovery.conf :=

##################################
include $(CLEAR_VARS)

LOCAL_MODULE := general_sepolicy.conf
LOCAL_MODULE_CLASS := ETC
LOCAL_MODULE_TAGS := tests

include $(BUILD_SYSTEM)/base_rules.mk

exp_sepolicy_build_files :=\
  $(wildcard $(addprefix $(LOCAL_PATH)/, $(sepolicy_build_files)))

$(LOCAL_BUILT_MODULE): PRIVATE_MLS_SENS := $(MLS_SENS)
$(LOCAL_BUILT_MODULE): PRIVATE_MLS_CATS := $(MLS_CATS)
$(LOCAL_BUILT_MODULE): $(exp_sepolicy_build_files)
	mkdir -p $(dir $@)
	$(hide) m4 -D mls_num_sens=$(PRIVATE_MLS_SENS) -D mls_num_cats=$(PRIVATE_MLS_CATS) \
		-D target_build_variant=user \
		-s $^ > $@
	$(hide) sed '/dontaudit/d' $@ > $@.dontaudit

GENERAL_SEPOLICY_POLICY.CONF = $(LOCAL_BUILT_MODULE)

exp_sepolicy_build_files :=

##################################
include $(CLEAR_VARS)

LOCAL_MODULE := file_contexts
LOCAL_MODULE_CLASS := ETC
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)

include $(BUILD_SYSTEM)/base_rules.mk

ALL_FC_FILES := $(call build_policy, file_contexts)

$(LOCAL_BUILT_MODULE): PRIVATE_SEPOLICY := $(built_sepolicy)
$(LOCAL_BUILT_MODULE):  $(ALL_FC_FILES) $(built_sepolicy) $(HOST_OUT_EXECUTABLES)/checkfc
	@mkdir -p $(dir $@)
	$(hide) m4 -s $(ALL_FC_FILES) > $@
	$(hide) $(HOST_OUT_EXECUTABLES)/checkfc $(PRIVATE_SEPOLICY) $@

built_fc := $(LOCAL_BUILT_MODULE)

##################################
include $(CLEAR_VARS)
LOCAL_MODULE := seapp_contexts
LOCAL_MODULE_CLASS := ETC
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)

include $(BUILD_SYSTEM)/base_rules.mk

seapp_contexts.tmp := $(intermediates)/seapp_contexts.tmp
$(seapp_contexts.tmp): $(call build_policy, seapp_contexts)
	@mkdir -p $(dir $@)
	$(hide) m4 -s $^ > $@

$(LOCAL_BUILT_MODULE): PRIVATE_SEPOLICY := $(built_sepolicy)
$(LOCAL_BUILT_MODULE) : $(seapp_contexts.tmp) $(built_sepolicy) $(HOST_OUT_EXECUTABLES)/checkseapp
	@mkdir -p $(dir $@)
	$(HOST_OUT_EXECUTABLES)/checkseapp -p $(PRIVATE_SEPOLICY) -o $@ $<

built_sc := $(LOCAL_BUILT_MODULE)
seapp_contexts.tmp :=

##################################
include $(CLEAR_VARS)

LOCAL_MODULE := property_contexts
LOCAL_MODULE_CLASS := ETC
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)

include $(BUILD_SYSTEM)/base_rules.mk

ALL_PC_FILES := $(call build_policy, property_contexts)

$(LOCAL_BUILT_MODULE): PRIVATE_SEPOLICY := $(built_sepolicy)
$(LOCAL_BUILT_MODULE):  $(ALL_PC_FILES) $(built_sepolicy) $(HOST_OUT_EXECUTABLES)/checkfc
	@mkdir -p $(dir $@)
	$(hide) m4 -s $(ALL_PC_FILES) > $@
	$(hide) $(HOST_OUT_EXECUTABLES)/checkfc -p $(PRIVATE_SEPOLICY) $@

built_pc := $(LOCAL_BUILT_MODULE)

##################################
include $(CLEAR_VARS)

LOCAL_MODULE := service_contexts
LOCAL_MODULE_CLASS := ETC
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)

include $(BUILD_SYSTEM)/base_rules.mk

ALL_SVC_FILES := $(call build_policy, service_contexts)

$(LOCAL_BUILT_MODULE): PRIVATE_SEPOLICY := $(built_sepolicy)
$(LOCAL_BUILT_MODULE):  $(ALL_SVC_FILES) $(built_sepolicy) $(HOST_OUT_EXECUTABLES)/checkfc
	@mkdir -p $(dir $@)
	$(hide) m4 -s $(ALL_SVC_FILES) > $@
	$(hide) $(HOST_OUT_EXECUTABLES)/checkfc -p $(PRIVATE_SEPOLICY) $@

built_svc := $(LOCAL_BUILT_MODULE)

##################################
include $(CLEAR_VARS)

LOCAL_MODULE := mac_permissions.xml
LOCAL_MODULE_CLASS := ETC
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/security

include $(BUILD_SYSTEM)/base_rules.mk

# Build keys.conf
mac_perms_keys.tmp := $(intermediates)/keys.tmp
$(mac_perms_keys.tmp) : $(call build_policy, keys.conf)
	@mkdir -p $(dir $@)
	$(hide) m4 -s $^ > $@

ALL_MAC_PERMS_FILES := $(call build_policy, $(LOCAL_MODULE))

$(LOCAL_BUILT_MODULE) : $(mac_perms_keys.tmp) $(HOST_OUT_EXECUTABLES)/insertkeys.py $(ALL_MAC_PERMS_FILES)
	@mkdir -p $(dir $@)
	$(hide) DEFAULT_SYSTEM_DEV_CERTIFICATE="$(dir $(DEFAULT_SYSTEM_DEV_CERTIFICATE))" \
		$(HOST_OUT_EXECUTABLES)/insertkeys.py -t $(TARGET_BUILD_VARIANT) -c $(TOP) $< -o $@ $(ALL_MAC_PERMS_FILES)

mac_perms_keys.tmp :=
##################################
include $(CLEAR_VARS)

LOCAL_MODULE := selinux_version
LOCAL_MODULE_CLASS := ETC
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)

include $(BUILD_SYSTEM)/base_rules.mk
$(LOCAL_BUILT_MODULE) : $(built_sepolicy) $(built_pc) $(built_fc) $(built_sc) $(built_svc)
	@mkdir -p $(dir $@)
	$(hide) echo -n $(BUILD_FINGERPRINT) > $@

##################################

build_policy :=
sepolicy_build_files :=
sepolicy_replace_paths :=
built_sepolicy :=
built_sc :=
built_fc :=
built_pc :=
built_svc :=

include $(call all-makefiles-under,$(LOCAL_PATH))