Restructure project files

native/src/core/include/db.hpp

@@ -0,0 +1,134 @@
+#pragma once
+
+#include <sys/stat.h>
+#include <map>
+#include <string>
+#include <string_view>
+#include <functional>
+
+template <class T, size_t N>
+class db_dict {
+public:
+    T& operator [](std::string_view key) {
+        return data[get_idx(key)];
+    }
+
+    const T& operator [](std::string_view key) const {
+        return data[get_idx(key)];
+    }
+
+    T& operator [](int key) {
+        return data[key];
+    }
+
+    const T& operator [](int key) const {
+        return data[key];
+    }
+
+protected:
+    T data[N + 1];
+    virtual int get_idx(std::string_view key) const = 0;
+};
+
+/***************
+ * DB Settings *
+ ***************/
+
+constexpr const char *DB_SETTING_KEYS[] = {
+    "root_access",
+    "multiuser_mode",
+    "mnt_ns",
+    "denylist",
+    "zygisk"
+};
+
+// Settings key indices
+enum {
+    ROOT_ACCESS = 0,
+    SU_MULTIUSER_MODE,
+    SU_MNT_NS,
+    DENYLIST_CONFIG,
+    ZYGISK_CONFIG
+};
+
+// Values for root_access
+enum {
+    ROOT_ACCESS_DISABLED = 0,
+    ROOT_ACCESS_APPS_ONLY,
+    ROOT_ACCESS_ADB_ONLY,
+    ROOT_ACCESS_APPS_AND_ADB
+};
+
+// Values for multiuser_mode
+enum {
+    MULTIUSER_MODE_OWNER_ONLY = 0,
+    MULTIUSER_MODE_OWNER_MANAGED,
+    MULTIUSER_MODE_USER
+};
+
+// Values for mnt_ns
+enum {
+    NAMESPACE_MODE_GLOBAL = 0,
+    NAMESPACE_MODE_REQUESTER,
+    NAMESPACE_MODE_ISOLATE
+};
+
+class db_settings : public db_dict<int, std::size(DB_SETTING_KEYS)> {
+public:
+    db_settings();
+protected:
+    int get_idx(std::string_view key) const override;
+};
+
+/**************
+ * DB Strings *
+ **************/
+
+constexpr const char *DB_STRING_KEYS[] = { "requester" };
+
+// Strings keys indices
+enum {
+    SU_MANAGER = 0
+};
+
+class db_strings : public db_dict<std::string, std::size(DB_STRING_KEYS)> {
+protected:
+    int get_idx(std::string_view key) const override;
+};
+
+/*************
+ * SU Access *
+ *************/
+
+typedef enum {
+    QUERY = 0,
+    DENY = 1,
+    ALLOW = 2,
+} policy_t;
+
+struct su_access {
+    policy_t policy;
+    int log;
+    int notify;
+};
+
+#define DEFAULT_SU_ACCESS { QUERY, 1, 1 }
+#define SILENT_SU_ACCESS  { ALLOW, 0, 0 }
+#define NO_SU_ACCESS      { DENY,  0, 0 }
+
+/********************
+ * Public Functions *
+ ********************/
+
+using db_row = std::map<std::string_view, std::string_view>;
+using db_row_cb = std::function<bool(db_row&)>;
+
+int get_db_settings(db_settings &cfg, int key = -1);
+int get_db_strings(db_strings &str, int key = -1);
+void rm_db_strings(int key);
+void exec_sql(int client);
+char *db_exec(const char *sql);
+char *db_exec(const char *sql, const db_row_cb &fn);
+bool db_err(char *e);
+
+#define db_err_cmd(e, cmd) if (db_err(e)) { cmd; }