1 files changed, 89 insertions, 0 deletions
diff --git a/build/core/http_prebuilt.mk b/build/core/http_prebuilt.mk
new file mode 100644
index 0000000..4d7556a
--- /dev/null
+++ b/build/core/http_prebuilt.mk
@@ -0,0 +1,89 @@
+# Copyright (C) 2015 The CyanogenMod Project
+#           (C) 2017 The LineageOS Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+ifeq ($(strip $(LOCAL_HTTP_PATH)),)
+  $(error LOCAL_HTTP_PATH not defined.)
+endif
+
+ifeq ($(strip $(LOCAL_HTTP_FILENAME)),)
+  $(error LOCAL_HTTP_FILENAME not defined.)
+endif
+
+ifeq ($(strip $(LOCAL_HTTP_MD5SUM)),)
+  $(error LOCAL_HTTP_MD5SUM not defined.)
+endif
+
+PREBUILT_MODULE_ARCHIVE := vendor/cm/prebuilt/archive/$(LOCAL_MODULE)
+
+PREBUILT_MODULE_FILE := $(PREBUILT_MODULE_ARCHIVE)/$(LOCAL_HTTP_FILENAME)
+
+PREBUILT_MODULE_MD5SUM := $(PREBUILT_MODULE_ARCHIVE)/md5sum
+
+HTTP_FILE_URL := $(LOCAL_HTTP_PATH)/$(LOCAL_HTTP_FILENAME)
+HTTP_FILE_MD5_URL := $(LOCAL_HTTP_PATH)/$(LOCAL_HTTP_MD5SUM)
+
+LOCAL_PREBUILT_MODULE_FILE := $(call intermediates-dir-for,$(LOCAL_MODULE_CLASS),$(LOCAL_MODULE),,COMMON)/$(LOCAL_HTTP_FILENAME)
+
+$(LOCAL_PREBUILT_MODULE_FILE): filename := $(LOCAL_HTTP_FILENAME)
+$(LOCAL_PREBUILT_MODULE_FILE): checksum := $(PREBUILT_MODULE_MD5SUM)
+$(LOCAL_PREBUILT_MODULE_FILE): filepath := $(PREBUILT_MODULE_FILE)
+$(LOCAL_PREBUILT_MODULE_FILE): version  := $(LOCAL_HTTP_FILE_VERSION)
+
+define curl-checksum
+  @echo "Pulling comparison md5sum for $(filename)"
+  $(call download-prebuilt-module, $(HTTP_FILE_MD5_URL),$(checksum))
+endef
+
+define audit-checksum
+  $(hide) if [ ! -f $(filepath) ]; then \
+            echo "Downloading: $(filename) (version $(version)) -> $(filepath)"; \
+            $(call download-prebuilt-module, $(HTTP_FILE_URL),$(filepath)) \
+          else \
+            temp_checksum=$(shell md5sum $(filepath) | cut -d ' ' -f1); \
+            if [ "$$temp_checksum" != "$(shell cat $(checksum) | cut -d ' ' -f1)" ]; then \
+              echo "Downloading: $(filename) (version $(version)) -> $(filepath)"; \
+              rm -rf $(filepath); \
+              $(call download-prebuilt-module, $(HTTP_FILE_URL),$(filepath)) \
+            fi; \
+          fi; \
+          rm -f $(checksum);
+endef
+
+# $(1) url
+# $(2) file output
+define download-prebuilt-module
+  ./vendor/cm/build/tasks/http_curl_prebuilt.sh $(1) $(2);
+endef
+
+define cleanup
+  @echo "Copying: $(filename) -> $(dir $@)"
+  $(hide) mkdir -p $(dir $@)
+  $(hide) cp $(filepath) $(dir $@)/$(filename)
+endef
+
+$(LOCAL_PREBUILT_MODULE_FILE):
+	$(call curl-checksum)
+	$(call audit-checksum)
+	$(call cleanup)
+
+include $(BUILD_PREBUILT)
+
+# the "fetchprebuilts" target will go through and pre-download all of the maven dependencies in the tree
+fetchprebuilts: $(LOCAL_PREBUILT_MODULE_FILE)
+
+# the "nukeprebuilts" target will evict all archived artifacts
+nukeprebuilts:
+	  @echo "Removing artifact for $(LOCAL_HTTP_FILENAME)"
+	  $(hide) rm -rf $(PREBUILT_MODULE_ARCHIVE)