Make it easier to switch SSL backends

src/Core.h

@@ -141,6 +141,10 @@ typedef cc_uint8  cc_bool;
 #define CC_GFX_BACKEND_D3D11     5
 #define CC_GFX_BACKEND_VULKAN    6
 
+#define CC_SSL_BACKEND_NONE     1
+#define CC_SSL_BACKEND_BEARSSL  2
+#define CC_SSL_BACKEND_SCHANNEL 3
+
 #define CC_GFX_BACKEND_IS_GL() (CC_GFX_BACKEND == CC_GFX_BACKEND_GL1 || CC_GFX_BACKEND == CC_GFX_BACKEND_GL2)
 
 #define CC_BUILD_NETWORKING
@@ -162,8 +166,8 @@ typedef cc_uint8  cc_bool;
 	#define CC_BUILD_NOMUSIC
 	#define CC_BUILD_NOSOUNDS
 	#define CC_BUILD_HTTPCLIENT
-	#define CC_BUILD_BEARSSL
 	#define CC_BUILD_SPLITSCREEN
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #elif defined XENON
 	/* libxenon also defines __linux__ (yes, really) */
 	#define CC_BUILD_XBOX360
@@ -172,11 +176,12 @@ typedef cc_uint8  cc_bool;
 	#define CC_BUILD_NOMUSIC
 	#define CC_BUILD_NOSOUNDS
 	#define CC_BUILD_HTTPCLIENT
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #elif defined _WIN32
 	#define CC_BUILD_WIN
 	#define CC_BUILD_HTTPCLIENT
-	#define CC_BUILD_SCHANNEL
 	#define CC_BUILD_WINMM
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_SCHANNEL
 	#define DEFAULT_GFX_BACKEND CC_GFX_BACKEND_D3D9
 	#define DEFAULT_WIN_BACKEND CC_WIN_BACKEND_WIN32
 #elif defined __ANDROID__
@@ -315,15 +320,15 @@ typedef cc_uint8  cc_bool;
 	#define CC_BUILD_COOPTHREADED
 	#define CC_BUILD_OPENAL
 	#define CC_BUILD_HTTPCLIENT
-	#define CC_BUILD_BEARSSL
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #elif defined __3DS__
 	#define CC_BUILD_3DS
 	#define CC_BUILD_CONSOLE
 	#define CC_BUILD_LOWMEM
 	#define CC_BUILD_HTTPCLIENT
-	#define CC_BUILD_BEARSSL
 	#define CC_BUILD_TOUCH
 	#define CC_BUILD_DUALSCREEN
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #elif defined GEKKO
 	#define CC_BUILD_GCWII
 	#define CC_BUILD_CONSOLE
@@ -332,31 +337,31 @@ typedef cc_uint8  cc_bool;
 	#endif
 	#define CC_BUILD_COOPTHREADED
 	#define CC_BUILD_HTTPCLIENT
-	#define CC_BUILD_BEARSSL
 	#define CC_BUILD_SPLITSCREEN
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #elif defined __vita__
 	#define CC_BUILD_PSVITA
 	#define CC_BUILD_CONSOLE
 	#define CC_BUILD_OPENAL
 	#define CC_BUILD_HTTPCLIENT
-	#define CC_BUILD_BEARSSL
 	#define CC_BUILD_TOUCH
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #elif defined _arch_dreamcast
 	#define CC_BUILD_DREAMCAST
 	#define CC_BUILD_CONSOLE
 	#define CC_BUILD_LOWMEM
 	#define CC_BUILD_HTTPCLIENT
-	#define CC_BUILD_BEARSSL
 	#define CC_BUILD_SPLITSCREEN
 	#define CC_BUILD_SMALLSTACK
 	#undef  CC_BUILD_RESOURCES
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #elif defined PLAT_PS3
 	#define CC_BUILD_PS3
 	#define CC_BUILD_CONSOLE
 	#define CC_BUILD_OPENAL
 	#define CC_BUILD_HTTPCLIENT
-	#define CC_BUILD_BEARSSL
 	#define CC_BUILD_SPLITSCREEN
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #elif defined N64
 	#define CC_BIG_ENDIAN
 	#define CC_BUILD_N64
@@ -376,8 +381,8 @@ typedef cc_uint8  cc_bool;
 	#define CC_BUILD_COOPTHREADED
 	#define CC_BUILD_OPENAL
 	#define CC_BUILD_HTTPCLIENT
-	#define CC_BUILD_BEARSSL
 	#define CC_BUILD_SPLITSCREEN
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #elif defined PLAT_NDS
 	#define CC_BUILD_NDS
 	#define CC_BUILD_CONSOLE
@@ -396,18 +401,18 @@ typedef cc_uint8  cc_bool;
 	#define CC_BUILD_COOPTHREADED
 	#define CC_BUILD_OPENAL
 	#define CC_BUILD_HTTPCLIENT
-	#define CC_BUILD_BEARSSL
 	#define CC_BUILD_SPLITSCREEN
 	#define CC_BUILD_TOUCH
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #elif defined __SWITCH__
 	#define CC_BUILD_SWITCH
 	#define CC_BUILD_CONSOLE
 	#define CC_BUILD_HTTPCLIENT
-	#define CC_BUILD_BEARSSL
 	#define CC_BUILD_TOUCH
 	#define CC_BUILD_GLES
 	#define CC_BUILD_EGL
 	#define DEFAULT_GFX_BACKEND CC_GFX_BACKEND_GL2
+	#define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #elif defined PLAT_PS1
 	#define CC_BUILD_PS1
 	#define CC_BUILD_CONSOLE
@@ -455,6 +460,9 @@ typedef cc_uint8  cc_bool;
 #if defined DEFAULT_GFX_BACKEND && !defined CC_GFX_BACKEND
 	#define CC_GFX_BACKEND DEFAULT_GFX_BACKEND
 #endif
+#if defined DEFAULT_SSL_BACKEND && !defined CC_SSL_BACKEND
+	#define CC_SSL_BACKEND DEFAULT_SSL_BACKEND
+#endif
 
 #ifdef CC_BUILD_CONSOLE
 #undef CC_BUILD_FREETYPE

src/Platform_Windows.c

@@ -136,6 +136,14 @@ void Platform_Log(const char* msg, int len) {
 	OutputDebugStringA("\n");
 }
 
+static VOID (WINAPI *_GetSystemTimeAsFileTime)(LPFILETIME sysTime);
+/* Fallback support for NT 3.5 */
+static VOID WINAPI Fallback_GetSystemTimeAsFileTime(LPFILETIME sysTime) {
+	SYSTEMTIME curTime;
+	GetSystemTime(&curTime);
+	SystemTimeToFileTime(&curTime, sysTime);
+}
+
 #define FILETIME_EPOCH      50491123200ULL
 #define FILETIME_UNIX_EPOCH 11644473600ULL
 #define FileTime_TotalSecs(time) ((time / 10000000) + FILETIME_EPOCH)
@@ -144,7 +152,7 @@ TimeMS DateTime_CurrentUTC(void) {
 	FILETIME ft; 
 	cc_uint64 raw;
 	
-	GetSystemTimeAsFileTime(&ft);
+	_GetSystemTimeAsFileTime(&ft);
 	/* in 100 nanosecond units, since Jan 1 1601 */
 	raw = ft.dwLowDateTime | ((cc_uint64)ft.dwHighDateTime << 32);
 	return FileTime_TotalSecs(raw);
@@ -171,7 +179,7 @@ cc_uint64 Stopwatch_Measure(void) {
 		QueryPerformanceCounter(&t);
 		return (cc_uint64)t.QuadPart;
 	} else {		
-		GetSystemTimeAsFileTime(&ft);
+		_GetSystemTimeAsFileTime(&ft);
 		return (cc_uint64)ft.dwLowDateTime | ((cc_uint64)ft.dwHighDateTime << 32);
 	}
 }
@@ -964,12 +972,15 @@ static BOOL (WINAPI *_IsDebuggerPresent)(void);
 
 static void LoadKernelFuncs(void) {
 	static const struct DynamicLibSym funcs[] = {
-		DynamicLib_Sym(AttachConsole), DynamicLib_Sym(IsDebuggerPresent)
+		DynamicLib_Sym(AttachConsole), DynamicLib_Sym(IsDebuggerPresent),
+		DynamicLib_Sym(GetSystemTimeAsFileTime),
 	};
 
 	static const cc_string kernel32 = String_FromConst("KERNEL32.DLL");
 	void* lib;
 	DynamicLib_LoadAll(&kernel32, funcs, Array_Elems(funcs), &lib);
+	/* Not present on Windows NT 3.5 */
+	if (!_GetSystemTimeAsFileTime) _GetSystemTimeAsFileTime = Fallback_GetSystemTimeAsFileTime;
 }
 
 void Platform_Init(void) {
@@ -1046,6 +1057,7 @@ cc_result Platform_Encrypt(const void* data, int len, cc_string* dst) {
 	LocalFree(output.pbData);
 	return 0;
 }
+
 cc_result Platform_Decrypt(const void* data, int len, cc_string* dst) {
 	DATA_BLOB input, output;
 	int i;

src/SSL.c

@@ -1,7 +1,7 @@
 #include "SSL.h"
 #include "Errors.h"
 
-#if defined CC_BUILD_SCHANNEL
+#if CC_SSL_BACKEND == CC_SSL_BACKEND_SCHANNEL
 #define WIN32_LEAN_AND_MEAN
 #define NOSERVICE
 #define NOMCX
@@ -404,7 +404,7 @@ cc_result SSL_Free(void* ctx_) {
 	Mem_Free(ctx);
 	return 0; 
 }
-#elif defined CC_BUILD_BEARSSL
+#elif CC_SSL_BACKEND == CC_SSL_BACKEND_BEARSSL
 #include "String.h"
 #include "bearssl.h"
 #include "../misc/certs/certs.h"