A few changes for mingw port (not done yet)

luprex/Makefile

@@ -1,4 +1,27 @@
 
+ifeq ($(OS),mingw)
+  EXE=main.exe
+  LIBS=-L./ext/openssl-mingw -lssl -lcrypto -lws2_32 -lcrypt32 -lcryptui
+  LUAFLAGS=-DLUA_USE_APICHECK -DLUA_COMPAT_ALL
+  OPT=-g -O0
+  DRIVER=driver-mingw
+else ifeq ($(OS),linux)
+  EXE=main
+  LIBS=-L./ext/openssl-linux -lssl -lcrypto
+  LUAFLAGS=-DLUA_USE_APICHECK -DLUA_USE_POSIX
+  OPT=-g -O0
+  DRIVER=driver-linux
+else
+  # In this case, any attempt to build luprex will trigger an error,
+  # But making 'clean' will still work.
+  ERROR=$(error You must specify OS=linux or OS=mingw)
+  EXE=$(ERROR)
+  LIBS=$(ERROR)
+  LUAFLAGS=$(ERROR)
+  OPT=$(ERROR)
+  DRIVER=driver-xxx
+endif
+
 
 OBJ_ERIS=\
 	obj/eris/lapi.o \
@@ -35,7 +58,6 @@ OBJ_ERIS=\
 	obj/eris/linit.o \
 	obj/eris/eris.o \
 
-
 OBJ_CORE=\
 	obj/core/invocation.o\
 	obj/core/spookyv2.o\
@@ -71,37 +93,28 @@ OBJ_CORE=\
 	obj/core/eng-tests.o\
 	obj/core/printbuffer.o\
 
-
 OBJ_DRV=\
 	obj/drv/drvutil.o\
 	obj/drv/sslutil.o\
+	obj/drv/$(DRIVER).o
 
 
-ifeq ($(OS),linux)
 
-OPT=-g -O0
-
-main: $(OBJ_DRV) $(OBJ_CORE) $(OBJ_ERIS) obj/drv/driver-linux.o
-	g++ $(OPT) -std=c++17 -export-dynamic -Wall -o $@ $(OBJ_DRV) $(OBJ_CORE) $(OBJ_ERIS) obj/drv/driver-linux.o -L./ext/openssl-linux -lssl -lcrypto -ldl
+$(EXE): $(OBJ_ERIS) $(OBJ_CORE) $(OBJ_DRV)
+	g++ $(OPT) -std=c++17 -export-dynamic -Wall -o $@ $(OBJ_ERIS) $(OBJ_CORE) $(OBJ_DRV) $(LIBS)
 
 obj/eris/%.o: ext/eris-master/src/%.c
-	gcc $(OPT) -Wall -fvisibility=hidden -DLUA_USE_APICHECK -DLUA_USE_POSIX -c -MMD $< -o $@
+	gcc $(OPT) -Wall -fvisibility=hidden $(LUAFLAGS) -c -MMD $< -o $@
 
 obj/core/%.o: cpp/core/%.cpp
 	g++ $(OPT) -Wall -fvisibility=hidden -std=c++17 -I./ext/eris-master/src -I./cpp/wrap -I./cpp/core -c -MMD $< -o $@
 
 obj/drv/%.o: cpp/drv/%.cpp
-	g++ $(OPT) -Wall -fvisibility=hidden -std=c++17 -I./ext/openssl -I./src/drv -c -MMD $< -o $@
-
--include obj/drv/driver-linux.d
-
-endif
+	g++ $(OPT) -Wall -fvisibility=hidden -std=c++17 -I./ext -I./src/drv -c -MMD $< -o $@
 
 clean:
-	rm -f main.exe main obj/*/*.*
+	rm -f main.exe main obj/core/*.* obj/drv/*.* obj/eris/*.*
 
 -include $(OBJ_ERIS:%.o=%.d)
--include $(OBJ_CORE:%.o=%.d)
--include $(OBJ_DRV:%.o=%.d)
-
+-include $(OBJ_ERIS:%.o=%.d)
 

luprex/cpp/drv/drvutil.cpp

@@ -9,6 +9,12 @@
 #include <string.h>
 #include <iostream>
 
+#if defined(_WIN32)
+#include <profileapi.h>
+#elif defined(__linux__)
+#include <time.h>
+#endif
+
 namespace drvutil {
 
 
@@ -198,7 +204,7 @@ void strerror_safe(int errnum, char errbuf[256]) {
     if (status != 0) {
         snprintf(errbuf, 256, "unknown errno %d", errnum);
     }
-);
+}
 
 #endif
 
@@ -252,7 +258,7 @@ std::string strerror_str(int errnum) {
             base_ = qpc();
         }
         double get() {
-            return (qpc() - base) * freq_;
+            return (qpc() - base_) * freq_;
         }
     };
 

luprex/cpp/drv/sslutil.cpp

@@ -87,12 +87,17 @@ std::string error_string() {
     }
 }
 
-std::string path_to_plain_ascii(const std::filesystem::path &path) {
-	std::string s = path.native();
-	for (char c : s) {
-		if ((c < 1) || (c > 127)) return "";
+// Make sure the path only contains printable ascii characters,
+// and no control characters or unicode characters.
+std::string path_to_plain_printable_ascii(const std::filesystem::path &path) {
+	auto s = path.native();
+    std::string result(' ', s.size());
+    for (int i = 0; i < int(s.size()); i++) {
+        auto c = s[i];
+        if ((c < 32) || (c > 126)) return "";
+        result[i] = c;
 	}
-	return s;
+	return result;
 }
 
 void clear_all_errors() {
@@ -170,7 +175,7 @@ void ctx_load_cert_from_directory(SSL_CTX *ctx, const std::string &dir) {
     std::vector<std::string> cert_paths;
 
     for (const auto & entry : std::filesystem::directory_iterator(dir)) {
-		std::string fn = path_to_plain_ascii(entry.path());
+		std::string fn = path_to_plain_printable_ascii(entry.path());
 		if (fn.empty()) {
 			std::cerr << "Ignoring file with non-ascii filename: " << entry.path() << std::endl;
 		} else {