Jump to bootloader to resolve challenge instead of bruteforcing

gluon/AbletonLive9_RemoteScripts#36 what the fuck

Makefile

@@ -7,7 +7,7 @@ SOURCES += src/flash/flash.c src/flash/settings.c
 SOURCES += src/led/led.c src/led/palettes.c
 SOURCES += src/send/send.c
 SOURCES += src/sysex/sysex.c src/sysex/messages.c
-SOURCES += src/other/challenge.c src/other/conversion.c src/other/tempo.c
+SOURCES += src/other/conversion.c src/other/tempo.c
 
 SOURCES += src/modes/mode.c
 SOURCES += src/modes/normal/performance.c src/modes/normal/ableton.c src/modes/normal/note.c src/modes/normal/drum.c src/modes/normal/fader.c src/modes/normal/programmer.c src/modes/normal/piano.c src/modes/normal/text.c

include/sysex/sysex.h

@@ -6,7 +6,6 @@
 
 #include "string.h"
 #include "modes/mode.h"
-#include "other/challenge.h"
 
 void handle_sysex(u8 port, u8 * d, u16 l);
 

src/app.c

@@ -54,8 +54,6 @@ void app_timer_event() {
 
 	tempo_timer++; tempo_tick();
 
-	if (challenge_do) challenge_timer_event();
-
 	(*mode_timer_event[mode])();
 }
 

src/sysex/sysex.c

@@ -11,8 +11,17 @@ void handle_sysex(u8 port, u8 * d, u16 l) {
 	if (!memcmp(d, &syx_challenge[0], syx_challenge_length)) {
 		if (port == USBMIDI) {
 			if (l == 12) {
-				challenge_do = 1;
-				challenge_counter = 0;
+				u32 result = (*         // wtf?
+					(u32 (*)(u32))      // cast to function pointer
+					*(u32*)0x080000EC   // grab pointer to challenge function from table
+				)(                      // call
+					*(u32*)(d + 7)      // grab Live's challenge value
+				);                      // :b1:
+
+				syx_challenge_response[7] = result & 0x7F;
+				syx_challenge_response[8] = (result >> 8) & 0x7F;
+
+				hal_send_sysex(USBMIDI, &syx_challenge_response[0], syx_challenge_response_length);
 
 			} else if (l == 8) { // Live Quit Message
 				mode_default_update(mode_performance);