FreeRDP console error ( OpenSSL LEGACY provider failed to load, no md4 support available! )
denis-limanov opened this issue · comments
Hello! I have C++ code using the FreeRDP library.
I installed FreeRDP 3.4.0 using vcpkg, wrote code to connect to RDP from the console, but when I compiled and ran the console application, I received an error message.
Error message:
[20:09:06:227] [10560:00002094] [WARN][com.winpr.utils.ssl] - [winpr_openssl_initialize]: OpenSSL LEGACY provider failed to load, no md4 support available!
[20:09:08:514] [10560:00002094] [ERROR][com.freerdp.core] - [freerdp_tcp_is_hostname_resolvable]: ERRCONNECT_DNS_NAME_NOT_FOUND [0x00020005]
[20:09:10:794] [10560:00002094] [ERROR][com.freerdp.core.nego] - [nego_connect]: Failed to connect
Failed to connect to 1.
When installing FreeRdp using vkpkg, OpenSSL is also installed accordingly.
The code itself:
#include <freerdp/freerdp.h>
#include <freerdp/client.h>
#include <winpr/crt.h>
#include <winpr/synch.h>
#include <winpr/winsock.h>
#include <iostream>
bool connect_to_rdp(const char* hostname, const char* username, const char* password, const char* domain) {
freerdp* instance = freerdp_new();
if (!instance) {
std::cerr << "Failed to create FreeRDP instance.\n";
return false;
}
if (!freerdp_context_new(instance)) {
freerdp_free(instance);
std::cerr << "Failed to create FreeRDP context.\n";
return false;
}
freerdp_settings_set_string(instance->context->settings, FreeRDP_ServerHostname, hostname);
freerdp_settings_set_string(instance->context->settings, FreeRDP_Username, username);
freerdp_settings_set_string(instance->context->settings, FreeRDP_Password, password);
freerdp_settings_set_string(instance->context->settings, FreeRDP_Domain, domain);
freerdp_settings_set_bool(instance->context->settings, FreeRDP_IgnoreCertificate, TRUE);
if (freerdp_connect(instance)) {
std::cout << "Successfully connected to " << hostname << ".\n";
freerdp_disconnect(instance);
freerdp_free(instance);
return true;
} else {
std::cerr << "Failed to connect to " << hostname << ".\n";
freerdp_free(instance);
return false;
}
}
int main(int argc, char* argv[]) {
if (argc < 5) {
std::cerr << "Usage: " << argv[0] << " <hostname> <username> <password> <domain>\n";
return -1;
}
WSADATA wsaData;
WSAStartup(MAKEWORD(2, 2), &wsaData);
bool success = connect_to_rdp(argv[1], argv[2], argv[3], argv[4]);
WSACleanup();
return success ? 0 : 1;
}
My tasks.json:
{
"tasks": [
{
"type": "cppbuild",
"label": "C/C++: g++.exe сборка активного файла",
"command": "c:\\msys64\\mingw64\\bin\\g++.exe",
"args": [
"-fdiagnostics-color=always",
"-g",
"${file}",
"-o",
"${fileDirname}\\${fileBasenameNoExtension}.exe",
"-lwsock32",
"-I",
"C:\\vcpkg\\installed\\x64-windows\\include\\openssl", // openssl
"-L",
"C:\\vcpkg\\installed\\x64-windows\\lib",
"-lcrypto",
"-lssl",
"-lWs2_32",
"-I",
"C:\\vcpkg\\installed\\x64-windows\\include",
"-L",
"C:\\vcpkg\\installed\\x64-windows\\lib",
"-lfreerdp3",
"-lfreerdp-client3",
"-lcjson",
"-llibusb-1.0",
"-lzlib",
"-lwinpr3",
"-Wl,--subsystem,windows"
],
"options": {
"cwd": "c:\\msys64\\mingw64\\bin"
},
"problemMatcher": [
"$gcc"
],
"group": {
"kind": "build",
"isDefault": true
},
"detail": "Задача создана отладчиком."
}
],
"version": "2.0.0"
}
My settings.json:
{
"C_Cpp.default.compilerPath": "C:\\msys64\\mingw64\\bin\\g++.exe",
"files.associations": {
"iosfwd": "cpp",
"ostream": "cpp",
"iostream": "cpp",
"any": "cpp",
"array": "cpp",
"atomic": "cpp",
"strstream": "cpp",
"barrier": "cpp",
"bit": "cpp",
"*.tcc": "cpp",
"bitset": "cpp",
"cctype": "cpp",
"cfenv": "cpp",
"charconv": "cpp",
"chrono": "cpp",
"cinttypes": "cpp",
"clocale": "cpp",
"cmath": "cpp",
"codecvt": "cpp",
"compare": "cpp",
"complex": "cpp",
"concepts": "cpp",
"condition_variable": "cpp",
"coroutine": "cpp",
"csetjmp": "cpp",
"csignal": "cpp",
"cstdarg": "cpp",
"cstddef": "cpp",
"cstdint": "cpp",
"cstdio": "cpp",
"cstdlib": "cpp",
"cstring": "cpp",
"ctime": "cpp",
"cwchar": "cpp",
"cwctype": "cpp",
"deque": "cpp",
"forward_list": "cpp",
"list": "cpp",
"map": "cpp",
"set": "cpp",
"string": "cpp",
"unordered_map": "cpp",
"unordered_set": "cpp",
"vector": "cpp",
"exception": "cpp",
"expected": "cpp",
"algorithm": "cpp",
"functional": "cpp",
"iterator": "cpp",
"memory": "cpp",
"memory_resource": "cpp",
"numeric": "cpp",
"optional": "cpp",
"random": "cpp",
"ratio": "cpp",
"regex": "cpp",
"source_location": "cpp",
"string_view": "cpp",
"system_error": "cpp",
"tuple": "cpp",
"type_traits": "cpp",
"utility": "cpp",
"rope": "cpp",
"slist": "cpp",
"format": "cpp",
"fstream": "cpp",
"future": "cpp",
"initializer_list": "cpp",
"iomanip": "cpp",
"istream": "cpp",
"latch": "cpp",
"limits": "cpp",
"mutex": "cpp",
"new": "cpp",
"numbers": "cpp",
"ranges": "cpp",
"scoped_allocator": "cpp",
"semaphore": "cpp",
"shared_mutex": "cpp",
"span": "cpp",
"spanstream": "cpp",
"sstream": "cpp",
"stacktrace": "cpp",
"stdexcept": "cpp",
"stdfloat": "cpp",
"stop_token": "cpp",
"streambuf": "cpp",
"syncstream": "cpp",
"thread": "cpp",
"typeindex": "cpp",
"typeinfo": "cpp",
"valarray": "cpp",
"variant": "cpp"
},
"makefile.makefilePath": ""
}
My launch.json:
{
"configurations": [
{
"name": "C/C++: g++.exe сборка и отладка активного файла",
"type": "cppdbg",
"request": "launch",
"program": "${fileDirname}\\${fileBasenameNoExtension}.exe",
"args": [],
"stopAtEntry": false,
"cwd": "c:\\msys64\\mingw64\\bin",
"environment": [],
"externalConsole": false,
"MIMode": "gdb",
"miDebuggerPath": "c:\\msys64\\mingw64\\bin\\gdb.exe",
"setupCommands": [
{
"description": "Включить автоматическое форматирование для gdb",
"text": "-enable-pretty-printing",
"ignoreFailures": true
},
{
"description": "Задать для варианта приложения дизассемблирования значение Intel",
"text": "-gdb-set disassembly-flavor intel",
"ignoreFailures": true
}
],
"preLaunchTask": "C/C++: g++.exe сборка активного файла"
}
],
"version": "2.0.0"
}
My c_cpp_properties.json:
{
"configurations": [
{
"name": "Win32",
"includePath": [
"${workspaceFolder}/**",
"C:\\msys64\\mingw64\\include\\",
"C:\\libssh2\\include",
"C:\\msys64\\mingw64\\include/**",
"C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.22621.0/**"
],
"defines": [
"_DEBUG",
"UNICODE",
"_UNICODE"
],
"cStandard": "c17",
"cppStandard": "c++23",
"intelliSenseMode": "windows-gcc-x64",
"compilerArgs": [
//"-lwsock32",
//"-lssh2",
//"-I C:\\libssh2\\include"
]
}
],
"version": 4
}
# vcpkg list:
cjson:x64-windows 1.7.17 Ultralightweight JSON parser i
n ANSI C
freerdp:x64-windows 3.4.0#1 A free implementation of the R
emote Desktop Prot...
libusb:x64-windows 1.0.27#1 a cross-platform library to ac
cess USB devices
openssl:x64-windows 3.3.0 OpenSSL is an open source proj
ect that provides ...
pkgconf:x64-windows 2.2.0 pkgconf is a program which hel
ps to configure co...
vcpkg-cmake-config:x64-windows 2022-02-06#1
vcpkg-cmake-get-vars:x64-windows 2023-12-31
vcpkg-cmake:x64-windows 2023-05-04
vcpkg-msbuild:x64-windows 2023-08-08
vcpkg-pkgconfig-get-modules:x64-windows 2023-09-06
vcpkg-tool-meson:x64-windows 1.3.2#2 Meson build system
zlib:x64-windows 1.3.1 A compression library
# vcpkg version:
vcpkg package management program version 2024-03-14-7d353e869753e5609a1f1a057df3db8fd356e49d
See LICENSE.txt for license information.
I use:
Windows 10 x64
Visual Studio Code
Mingw GCC
vcpkg
FreeRDP 3.4.0
Who knows the solution? I would be very grateful for your help as I am new to C++
just as the error indicates, you need to properly configure your openssl.
RDP uses some outdated hash algorithms in some places.
we have the WITH_INTERNAL_MD4 et al options to compile them directly so no support in openssl is required.