LibCore: Add Windows impl of System::socket, getaddrinfo, connect

Author: https://github.com/stasoid
Commit: c14e6473d6
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5065
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/alimpfard

Libraries/LibCore/System.h

@@ -141,6 +141,7 @@ struct WaitPidResult {
 ErrorOr<WaitPidResult> waitpid(pid_t waitee, int options = 0);
 ErrorOr<void> fchown(int fd, uid_t, gid_t);
 ErrorOr<struct utsname> uname();
+#endif
 
 class AddressInfoVector {
     AK_MAKE_NONCOPYABLE(AddressInfoVector);
@@ -173,7 +174,6 @@ private:
 };
 
 ErrorOr<AddressInfoVector> getaddrinfo(char const* nodename, char const* servname, struct addrinfo const& hints);
-#endif
 
 unsigned hardware_concurrency();
 u64 physical_memory_bytes();

Libraries/LibCore/SystemWindows.cpp

@@ -292,4 +292,35 @@ ErrorOr<bool> isatty(int handle)
     return GetFileType(to_handle(handle)) == FILE_TYPE_CHAR;
 }
 
+ErrorOr<int> socket(int domain, int type, int protocol)
+{
+    auto socket = ::socket(domain, type, protocol);
+    if (socket == INVALID_SOCKET)
+        return Error::from_windows_error();
+    return socket;
+}
+
+ErrorOr<AddressInfoVector> getaddrinfo(char const* nodename, char const* servname, struct addrinfo const& hints)
+{
+    struct addrinfo* results = nullptr;
+
+    int rc = ::getaddrinfo(nodename, servname, &hints, &results);
+    if (rc != 0)
+        return Error::from_windows_error(rc);
+
+    Vector<struct addrinfo> addresses;
+
+    for (auto* result = results; result != nullptr; result = result->ai_next)
+        TRY(addresses.try_append(*result));
+
+    return AddressInfoVector { move(addresses), results };
+}
+
+ErrorOr<void> connect(int socket, struct sockaddr const* address, socklen_t address_length)
+{
+    if (::connect(socket, address, address_length) == SOCKET_ERROR)
+        return Error::from_windows_error();
+    return {};
+}
+
 }