登录用户
- 获取登录用户名
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std::string get_login_name() { std::string res; char* name = new char[512]; auto len = getlogin_r(name, 512); #ifdef DEBUG if (strcmp(name, "root") == 0) { const char* user_env = getenv("USER"); if (user_env) { std::strcpy(name, user_env); } else { std::strcpy(name, "enlink"); } } #endif res = name; delete[] name; return res; } std::string get_login_path() { auto name = get_login_name(); if (name.empty()) { return ""; } return std::string("/Users/").append(name); } |
uuid
- 需要获取硬件
UUID，用这个UUID拼出目标文件名。具体：
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/Users/aet_test + /Library/Preferences/ByHost/com.apple.screensaver. + UUID + .plist |
- 获取
- 通过
IOKit库查询“IOPlatformExpertDevice”服务，并从中读取“IOPlatformUUID”属性，获取的就是硬件的UUID - 这个
UUID是针对Mac计算机的物理硬件的唯一标识符，通常与主板相关联
无论重新安装操作系统或更改其他硬件组件，这个UUID都保持不变
- 通过
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std::string get_hw_uuid() { std::string res; @autoreleasepool { io_service_t platformExpert = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("IOPlatformExpertDevice")); if (platformExpert) { CFTypeRef serialNumberAsCFString = IORegistryEntryCreateCFProperty(platformExpert, CFSTR("IOPlatformUUID"), kCFAllocatorDefault, 0); if (serialNumberAsCFString) { CFStringRef tmpStrRef = (CFStringRef)serialNumberAsCFString; const char* tmp_str = CFStringGetCStringPtr(tmpStrRef, kCFStringEncodingUTF8); if (tmp_str) { res = tmp_str; } else { CFIndex len = CFStringGetLength(tmpStrRef); CFIndex max = CFStringGetMaximumSizeForEncoding(len, kCFStringEncodingUTF8) + 1; char* buf = new char[max]; if (CFStringGetCString(tmpStrRef, buf, max, kCFStringEncodingUTF8)) { res = buf; } delete[] buf; } CFRelease(serialNumberAsCFString); } IOObjectRelease(platformExpert); } } return res; } |
解析
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boost::property_tree::ptree tree; do { if (parsePlist(tmp_path, tree) != Status::STATUS_SUCC) { break; } auto idle_time = tree.get<int>("idleTime", 0); return (idle_time != 0); } while (false); |
字段
idleTime
- 屏保启动时间，为
0时，表示永不
moduleDict
moduleName- 屏幕保护程序的名称
path- 屏幕保护程序的路径
type
屏保类型
- 该文件记录了当前屏保类型，根据观察，可能每个屏保类型对应的不太全
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/Users/aet_test + /Library/Preferences/ByHost/com.apple.screensaver.iLifeSlideShows. + UUID + .plist |
示例
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bool is_screen_protected() { auto path = get_login_path(); if (path.empty()) { return false; } auto uuid = get_hw_uuid(); if (uuid.empty()) { return false; } auto tmp_path = path.append("/Library/Preferences/ByHost/com.apple.screensaver.").append(uuid).append(".plist"); boost::property_tree::ptree tree; do { if (parsePlist(tmp_path, tree) != Status::STATUS_SUCC) { break; } auto idle_time = tree.get<int>("idleTime", 0); return (idle_time != 0); } while (false); return false; } |
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