1 files changed, 73 insertions, 0 deletions
diff --git a/libinit/libinit_utils.cpp b/libinit/libinit_utils.cpp
new file mode 100644
index 0000000..50f5c35
--- /dev/null
+++ b/libinit/libinit_utils.cpp
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
+#include <sys/_system_properties.h>
+#include <vector>
+
+#include <libinit_utils.h>
+
+void property_override(std::string prop, std::string value, bool add) {
+    auto pi = (prop_info *) __system_property_find(prop.c_str());
+    if (pi != nullptr) {
+        __system_property_update(pi, value.c_str(), value.length());
+    } else if (add) {
+        __system_property_add(prop.c_str(), prop.length(), value.c_str(), value.length());
+    }
+}
+
+std::vector<std::string> ro_props_default_source_order = {
+    "odm.",
+    "product.",
+    "system.",
+    "system_ext.",
+    "vendor.",
+    "",
+};
+
+void set_ro_build_prop(const std::string &prop, const std::string &value, bool product) {
+    std::string prop_name;
+
+    for (const auto &source : ro_props_default_source_order) {
+        if (product)
+            prop_name = "ro.product." + source + prop;
+        else
+            prop_name = "ro." + source + "build." + prop;
+
+        property_override(prop_name, value, true);
+    }
+}
+
+#define FIND_AND_REMOVE(s, delimiter, variable_name) \
+    std::string variable_name = s.substr(0, s.find(delimiter)); \
+    s.erase(0, s.find(delimiter) + delimiter.length());
+
+#define APPEND_STRING(s, to_append) \
+    s.append(" "); \
+    s.append(to_append);
+
+std::string fingerprint_to_description(std::string fingerprint) {
+    std::string delimiter = "/";
+    std::string delimiter2 = ":";
+    std::string build_fingerprint_copy = fingerprint;
+
+    FIND_AND_REMOVE(build_fingerprint_copy, delimiter, brand)
+    FIND_AND_REMOVE(build_fingerprint_copy, delimiter, product)
+    FIND_AND_REMOVE(build_fingerprint_copy, delimiter2, device)
+    FIND_AND_REMOVE(build_fingerprint_copy, delimiter, platform_version)
+    FIND_AND_REMOVE(build_fingerprint_copy, delimiter, build_id)
+    FIND_AND_REMOVE(build_fingerprint_copy, delimiter2, build_number)
+    FIND_AND_REMOVE(build_fingerprint_copy, delimiter, build_variant)
+    std::string build_version_tags = build_fingerprint_copy;
+
+    std::string description = product + "-" + build_variant;
+    APPEND_STRING(description, platform_version)
+    APPEND_STRING(description, build_id)
+    APPEND_STRING(description, build_number)
+    APPEND_STRING(description, build_version_tags)
+
+    return description;
+}