samsung: add secril_config_svc

* Used for loading multisim related props from EFS

Change-Id: I9db6244cf3396eee8c13a5a58941c35a33fca412

ril/secril_config_svc/Android.bp

@@ -0,0 +1,24 @@
+//
+// Copyright (C) 2021 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.
+//
+
+cc_binary {
+    name: "secril_config_svc",
+    vendor: true,
+    srcs: ["secril_config_svc.cpp"],
+    shared_libs: [
+        "libbase",
+    ],
+}

ril/secril_config_svc/secril_config_svc.cpp

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2021, 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.
+ */
+
+#define LOG_TAG "secril_config_svc"
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/strings.h>
+
+#include <fstream>
+
+#define EFS_OLD "/efs/"
+#define EFS_NEW "/mnt/vendor/efs/"
+#define FACTORY_PROP "factory.prop"
+#define TELEPHONY_PROP "telephony.prop"
+
+void LoadProperties(std::string data) {
+    for (std::string line : android::base::Split(data, "\n")) {
+        if (line == "\0") break;
+
+        std::vector<std::string> parts = android::base::Split(line, "=");
+        if (parts.size() == 2) {
+            LOG(INFO) << "Setting property: " << line;
+            android::base::SetProperty(parts.at(0), parts.at(1));
+        } else {
+            LOG(ERROR) << "Invalid data: " << line;
+        }
+    }
+}
+
+int main(int argc, char *argv[]) {
+    std::string prop = FACTORY_PROP;
+
+    if (argc > 1 && std::string(argv[1]) == "NetworkConfig")
+        prop = TELEPHONY_PROP;
+
+    std::ifstream in(EFS_NEW + prop);
+    if (in.good()) {
+        in.close();
+        prop = EFS_NEW + prop;
+    } else {
+        prop = EFS_OLD + prop;
+    }
+
+    LOG(INFO) << "Loading properties from " << prop;
+
+    std::string content;
+    if (android::base::ReadFileToString(prop, &content)) {
+        LoadProperties(content.c_str());
+    } else if (android::base::EndsWith(prop, FACTORY_PROP)) {
+        LOG(WARNING) << "Could not read " << prop << ", setting defaults!";
+        LoadProperties("ro.vendor.multisim.simslotcount=1");
+    } else {
+        LOG(WARNING) << "Could not read " << prop << "!";
+    }
+}