From b2cc2ef0d78a6bb32329c3d28ec48643d8c3393b Mon Sep 17 00:00:00 2001
From: SChernykh <sergey.v.chernykh@gmail.com>
Date: Fri, 17 Sep 2021 12:05:37 +0200
Subject: [PATCH] Fixed Windows 7 compatibility

Fixes #2585
---
 src/base/io/Env.cpp | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/base/io/Env.cpp b/src/base/io/Env.cpp
index 2a0d4ad7c..e31cb43c0 100644
--- a/src/base/io/Env.cpp
+++ b/src/base/io/Env.cpp
@@ -142,10 +142,30 @@ xmrig::String xmrig::Env::get(const String &name, const std::map<String, String>
 
 xmrig::String xmrig::Env::hostname()
 {
+#   ifdef _WIN32
+    const HMODULE hLib = LoadLibraryA("Ws2_32.dll");
+    if (hLib) {
+        typedef int (WSAAPI* GetHostNameW_proc)(PWSTR, int);
+        GetHostNameW_proc GetHostNameW_ptr = reinterpret_cast<GetHostNameW_proc>(GetProcAddress(hLib, "GetHostNameW"));
+        if (GetHostNameW_ptr) {
+            WCHAR buf[UV_MAXHOSTNAMESIZE];
+            if (GetHostNameW_ptr(buf, UV_MAXHOSTNAMESIZE) != 0) {
+                return {};
+            }
+            char utf8_str[UV_MAXHOSTNAMESIZE * 4 + 1];
+            const int len = WideCharToMultiByte(CP_UTF8, 0, buf, -1, utf8_str, sizeof(utf8_str), nullptr, nullptr);
+            if (len <= 0) {
+                return {};
+            }
+            return utf8_str;
+        }
+    }
+#   endif
+
     char buf[UV_MAXHOSTNAMESIZE]{};
     size_t size = sizeof(buf);
 
-#   if UV_VERSION_HEX >= 0x010c00
+#   if (UV_VERSION_HEX >= 0x010c00) && !defined(_WIN32)
     if (uv_os_gethostname(buf, &size) == 0) {
         return static_cast<const char *>(buf);
     }