Android: Build wpa_supplicant.conf from a template

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

wpa_supplicant/wpa_supplicant_conf.mk

@@ -0,0 +1,43 @@
+#
+# Copyright (C) 2010 The Android Open Source 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.
+#
+
+# Include this makefile to generate your hardware specific wpa_supplicant.conf
+# Requires: WIFI_DRIVER_SOCKET_IFACE
+
+LOCAL_PATH := $(call my-dir)
+
+########################
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := wpa_supplicant.conf
+LOCAL_MODULE_CLASS := ETC
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/wifi
+
+include $(BUILD_SYSTEM)/base_rules.mk
+
+WPA_SUPPLICANT_CONF_TEMPLATE := $(LOCAL_PATH)/wpa_supplicant_template.conf
+WPA_SUPPLICANT_CONF_SCRIPT := $(LOCAL_PATH)/wpa_supplicant_conf.sh
+$(LOCAL_BUILT_MODULE): PRIVATE_WIFI_DRIVER_SOCKET_IFACE := $(WIFI_DRIVER_SOCKET_IFACE)
+$(LOCAL_BUILT_MODULE): PRIVATE_WPA_SUPPLICANT_CONF_TEMPLATE := $(WPA_SUPPLICANT_CONF_TEMPLATE)
+$(LOCAL_BUILT_MODULE): PRIVATE_WPA_SUPPLICANT_CONF_SCRIPT := $(WPA_SUPPLICANT_CONF_SCRIPT)
+$(LOCAL_BUILT_MODULE) : $(WPA_SUPPLICANT_CONF_TEMPLATE) $(WPA_SUPPLICANT_CONF_SCRIPT)
+	@echo Target wpa_supplicant.conf: $@
+	@mkdir -p $(dir $@)
+	$(hide) WIFI_DRIVER_SOCKET_IFACE="$(PRIVATE_WIFI_DRIVER_SOCKET_IFACE)" \
+		bash $(PRIVATE_WPA_SUPPLICANT_CONF_SCRIPT) $(PRIVATE_WPA_SUPPLICANT_CONF_TEMPLATE) > $@
+
+########################

wpa_supplicant/wpa_supplicant_conf.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+#
+# Copyright (C) 2010 The Android Open Source 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.
+#
+
+# Generate a wpa_supplicant.conf from the template.
+# $1: the template file name
+if [ -n "$WIFI_DRIVER_SOCKET_IFACE" ]
+then
+  sed -e 's/#.*$//' -e 's/[ \t]*$//' -e '/^$/d' < $1 | sed -e "s/wlan0/$WIFI_DRIVER_SOCKET_IFACE/"
+else
+  sed -e 's/#.*$//' -e 's/[ \t]*$//' -e '/^$/d' < $1
+fi

wpa_supplicant/wpa_supplicant_template.conf

@@ -0,0 +1,6 @@
+##### wpa_supplicant configuration file template #####
+update_config=1
+ctrl_interface=wlan0
+eapol_version=1
+ap_scan=1
+fast_reauth=1