Add uname.

GitOrigin-RevId: d63397a217f67714d621425e7c6d3ea1e1fa3c60

tdutils/CMakeLists.txt

@@ -60,6 +60,7 @@ set(TDUTILS_SOURCE
   td/utils/port/StdStreams.cpp
   td/utils/port/thread_local.cpp
   td/utils/port/UdpSocketFd.cpp
+  td/utils/port/uname.cpp
   td/utils/port/user.cpp
   td/utils/port/wstring_convert.cpp
 
@@ -139,6 +140,7 @@ set(TDUTILS_SOURCE
   td/utils/port/thread.h
   td/utils/port/thread_local.h
   td/utils/port/UdpSocketFd.h
+  td/utils/port/uname.h
   td/utils/port/user.h
   td/utils/port/wstring_convert.h
 

tdutils/td/utils/port/uname.cpp

@@ -0,0 +1,122 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#include "td/utils/port/uname.h"
+
+#include "td/utils/port/config.h"
+
+#include "td/utils/common.h"
+#include "td/utils/logging.h"
+#include "td/utils/misc.h"
+
+#if TD_PORT_POSIX
+#if TD_ANDROID
+#include <sys/system_properties.h>
+#else
+#include <sys/utsname.h>
+#endif
+#endif
+
+namespace td {
+
+Slice get_operating_system_name() {
+  static string result = []() -> string {
+#if TD_PORT_POSIX
+#if TD_ANDROID
+    char version[PROP_VALUE_MAX + 1];
+    int length = __system_property_get("ro.build.version.release", version);
+    return length <= 0 ? string("Android") : "Android " + string(version, length);
+#else
+    utsname name;
+    int err = uname(&name);
+    if (err == 0) {
+      auto os_name = trim(PSTRING() << name.sysname << " " << name.release);
+      if (!os_name.empty()) {
+        return os_name;
+      }
+    }
+    LOG(ERROR) << "Failed to identify OS name; use generic one";
+#endif
+
+#if TD_DARWIN_IOS
+    return "iOS";
+#elif TD_DARWIN_TV_OS
+    return "tvOS";
+#elif TD_DARWIN_WATCH_OS
+    return "watchOS";
+#elif TD_DARWIN_MAC
+    return "macOS";
+#elif TD_DARWIN
+    return "Darwin";
+#elif TD_ANDROID
+    return "Android";
+#elif TD_TIZEN
+    return "Tizen";
+#elif TD_LINUX
+    return "Linux";
+#elif TD_FREEBSD
+    return "FreeBSD";
+#elif TD_OPENBSD
+    return "OpenBSD";
+#elif TD_NETBSD
+    return "NetBSD";
+#elif TD_CYGWIN
+    return "Cygwin";
+#elif TD_EMSCRIPTEN
+    return "Emscripten";
+#else
+    return "Unix";
+#endif
+
+#else
+
+#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP | WINAPI_PARTITION_SYSTEM)
+    auto handle = GetModuleHandle(L"ntdll.dll");
+    if (handle != nullptr) {
+      using RtlGetVersionPtr = LONG(WINAPI *)(PRTL_OSVERSIONINFOEXW);
+      RtlGetVersionPtr RtlGetVersion = reinterpret_cast<RtlGetVersionPtr>(GetProcAddress(handle, "RtlGetVersion"));
+      if (RtlGetVersion != nullptr) {
+        RTL_OSVERSIONINFOEXW os_version_info = {};
+        os_version_info.dwOSVersionInfoSize = sizeof(os_version_info);
+        if (RtlGetVersion(&os_version_info) == 0) {
+          auto major = os_version_info.dwMajorVersion;
+          auto minor = os_version_info.dwMinorVersion;
+          bool is_server = os_version_info.wProductType != VER_NT_WORKSTATION;
+
+          if (major == 10 && minor >= 0) {
+            if (is_server) {
+              return os_version_info.dwBuildNumber >= 17623 ? "Windows Server 2019" : "Windows Server 2016";
+            }
+            return "Windows 10";
+          }
+          if (major == 6 && minor == 3) {
+            return is_server ? "Windows Server 2012 R2" : "Windows 8.1";
+          }
+          if (major == 6 && minor == 2) {
+            return is_server ? "Windows Server 2012" : "Windows 8";
+          }
+          if (major == 6 && minor == 1) {
+            return is_server ? "Windows Server 2008 R2" : "Windows 7";
+          }
+          if (major == 6 && minor == 0) {
+            return is_server ? "Windows Server 2008" : "Windows Vista";
+          }
+          return is_server ? "Windows Server" : "Windows";
+        }
+      }
+    }
+#elif TD_WINRT
+    return "Windows 10";
+#endif
+
+    LOG(ERROR) << "Failed to identify OS name; use generic one";
+    return "Windows";
+#endif
+  }();
+  return result;
+}
+
+}  // namespace td

tdutils/td/utils/port/uname.h

@@ -0,0 +1,15 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#pragma once
+
+#include "td/utils/Slice.h"
+
+namespace td {
+
+Slice get_operating_system_name();
+
+}

tdutils/test/misc.cpp

@@ -24,6 +24,7 @@
 #include "td/utils/port/sleep.h"
 #include "td/utils/port/Stat.h"
 #include "td/utils/port/thread.h"
+#include "td/utils/port/uname.h"
 #include "td/utils/port/wstring_convert.h"
 #include "td/utils/Random.h"
 #include "td/utils/Slice.h"
@@ -1080,6 +1081,7 @@ TEST(Misc, Hasher) {
   test_hash<AbslHash>();
 #endif
 }
+
 TEST(Misc, CancellationToken) {
   CancellationTokenSource source;
   source.cancel();
@@ -1099,3 +1101,12 @@ TEST(Misc, CancellationToken) {
   source = CancellationTokenSource{};
   CHECK(token4);
 }
+
+TEST(Misc, uname) {
+  auto first_name = get_operating_system_name();
+  auto second_name = get_operating_system_name();
+  ASSERT_STREQ(first_name, second_name);
+  ASSERT_EQ(first_name.begin(), second_name.begin());
+  ASSERT_TRUE(!first_name.empty());
+  LOG(ERROR) << first_name;
+}