chore: Introduce common directory to deduplicate shared code

common/sysconfig.cpp

@@ -0,0 +1,115 @@
+/*  Copyright 2024 Pretendo Network contributors <pretendo.network>
+    Copyright 2024 Ash Logan <ash@heyquark.com>
+    Copyright 2020-2022 V10lator <v10lator@myway.de>
+    Copyright 2022 Xpl0itU <DaThinkingChair@protonmail.com>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "sysconfig.h"
+#include "utils/logger.h"
+#include "utils/scope_exit.h"
+
+#include <coreinit/mcp.h>
+#include <coreinit/userconfig.h>
+#include <optional>
+
+nn::swkbd::LanguageType get_system_language() {
+    static std::optional <nn::swkbd::LanguageType> cached_language{};
+    if (cached_language) return *cached_language;
+
+    UCHandle handle = UCOpen();
+    if (handle < 0) {
+        DEBUG_FUNCTION_LINE("Error opening UC: %d", handle);
+        return nn::swkbd::LanguageType::English;
+    }
+    scope_exit uc_c([&] { UCClose(handle); });
+
+    nn::swkbd::LanguageType language;
+
+    alignas(0x40) UCSysConfig settings = {
+            .name = "cafe.language",
+            .access = 0,
+            .dataType = UC_DATATYPE_UNSIGNED_INT,
+            .error = UC_ERROR_OK,
+            .dataSize = sizeof(language),
+            .data = &language,
+    };
+
+    UCError err = UCReadSysConfig(handle, 1, &settings);
+    if (err != UC_ERROR_OK) {
+        DEBUG_FUNCTION_LINE("Error reading UC: %d!", err);
+        return nn::swkbd::LanguageType::English;
+    }
+
+    DEBUG_FUNCTION_LINE_VERBOSE("System language found: %d", language);
+    cached_language = language;
+    return language;
+}
+
+static std::optional<MCPSysProdSettings> mcp_config;
+static std::optional<MCPSystemVersion> mcp_os_version;
+static void get_mcp_config() {
+    int mcp = MCP_Open();
+    scope_exit mcp_c([&] { MCP_Close(mcp); });
+
+    alignas(0x40) MCPSysProdSettings config {};
+    if (MCP_GetSysProdSettings(mcp, &config)) {
+        DEBUG_FUNCTION_LINE("Could not get MCP system config!");
+        return;
+    }
+    mcp_config = config;
+
+    //get os version
+    MCPSystemVersion os_version;
+    if (MCP_GetSystemVersion(mcp, &os_version)) {
+        DEBUG_FUNCTION_LINE("Could not get MCP system config!");
+        return;
+    }
+    mcp_os_version = os_version;
+
+    DEBUG_FUNCTION_LINE_VERBOSE("Running on %d.%d.%d%c; %s%s",
+                                os_version.major, os_version.minor, os_version.patch, os_version.region
+                                        config.code_id, config.serial_id
+    );
+}
+
+const char * get_console_serial() {
+    if (!mcp_config) get_mcp_config();
+
+    return mcp_config ? mcp_config->serial_id : "123456789";
+}
+
+MCPSystemVersion get_console_os_version() {
+    if (!mcp_os_version) get_mcp_config();
+
+    return mcp_os_version.value_or((MCPSystemVersion) { .major = 5, .minor = 5, .patch = 5, .region = 'E' });
+}
+
+static inline int digit(char a) {
+    if (a < '0' || a > '9') return 0;
+    return a - '0';
+}
+
+unsigned short get_console_peertopeer_port() {
+    const char * serial = get_console_serial();
+
+    unsigned short port = 50000 +
+                          (digit(serial[4]) * 1000) +
+                          (digit(serial[5]) * 100 ) +
+                          (digit(serial[6]) * 10  ) +
+                          (digit(serial[7]) * 1   );
+
+    return port;
+}