Added eval command

CMakeLists.txt

@@ -22,6 +22,7 @@ add_executable(tuxiflux
     bot/modules/help.cpp
     bot/modules/money.cpp
     bot/modules/fun.cpp
+    bot/modules/eval.cpp
 )
 
 target_include_directories(tuxiflux PRIVATE
@@ -34,7 +35,7 @@ find_package(PkgConfig REQUIRED)
 pkg_check_modules(cdlpp REQUIRED IMPORTED_TARGET cdlpp)
 
 target_link_libraries(${PROJECT_NAME} PUBLIC
-        PkgConfig::cdlpp -lcdlpp) #TODO: Why is -lcdlpp required?? I don't get it...
+        PkgConfig::cdlpp -lcdlpp -ldl) #TODO: Why is -lcdlpp required?? I don't get it...
 
 cdlppdb_libs()
 

bot/modules/eval.cpp

@@ -0,0 +1,77 @@
+#include <string>
+#include <cdlpp/cdltypes.hpp>
+#include <boost/process.hpp>
+#include <dlhandle.hpp>
+#include "permassert.hpp"
+using namespace std;
+using namespace CDL;
+
+
+
+class Eval {
+    static void eval(CMessage msg, CChannel channel, cmdargs& args) {
+        // Only bot owner may use this
+        if (msg->author->id != env.settings["owner"]) {
+            return;
+        }
+        // Check args
+        if (args.empty()) {
+            return;
+        }
+        // Generate code
+        remove("./codef.cpp");
+        ofstream codef("./codef.cpp");
+        codef << "#include <cdlpp/cdltypes.hpp>\n"
+                 "#include <dlhandle.hpp>\n"
+                 "extern \"C\"\n"
+                 "void eval_main(CDL::CMessage msg, CDL::CChannel channel) {\n"
+                 "using namespace CDL;"
+                 << args[0] <<
+                 "}";
+        codef.close();
+        // Compile code
+        channel->start_typing([=] (const bool) {
+            string libnme = "./codef_"+to_string(msg->id)+".so";
+            boost::process::async_system(*env.aioc, [=] (boost::system::error_code, int code) {
+                // Check compiler result
+                if (code != 0) {
+                    channel->send(":warning: Compilation failed");
+                    return;
+                }
+                // Run code
+                try {
+                    auto evalo = new Dlhandle(libnme);
+                    auto fnc = evalo->get<void(CMessage, CChannel)>("eval_main");
+                    if (not fnc) {
+                        channel->send(":warning: Failed to find main function");
+                        delete evalo; // Delete evalo directly
+                    } else {
+                        fnc(msg, channel);
+                        // Delete evalo after a minute
+                        auto t = new boost::asio::deadline_timer(*env.aioc, boost::posix_time::minutes(1));
+                        t->async_wait([=] (const boost::system::error_code&) {
+                            delete t;
+                            delete evalo;
+                            remove(libnme.c_str());
+                        });
+                    }
+                }  catch (Dlhandle::Exception&) {
+                    channel->send(":warning: Loading failed");
+                }
+            }, "gcc -std=c++17 ./codef.cpp -shared -fPIC -l cdlpp -o "+libnme);
+        });
+    }
+
+
+public:
+    Eval() {
+        using namespace CDL;
+        // Commands
+        register_command("eval", eval, 1);
+    }
+};
+
+
+
+
+static Eval eval;

config.json.example

@@ -6,6 +6,7 @@
     "team": [
         <team member IDs as integers>
     ],
+    "owner": <owner user ID>,
     "start_money": <how much initial money the users receive; ommit to set to 0>,
     "daily_money": <how much daily money the users can receive; ommit to disable daily money>
 }