102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
#include <sysinit.h>
|
|
#include <string.h>
|
|
|
|
#include "basic/basic.h"
|
|
|
|
#include "lcd/print.h"
|
|
|
|
#include "usb/usbmsc.h"
|
|
|
|
#include "filesystem/ff.h"
|
|
#include "filesystem/select.h"
|
|
|
|
#include "basic/xxtea.h"
|
|
|
|
#include "SECRETS"
|
|
|
|
//extern void * sram_top;
|
|
|
|
/**************************************************************************/
|
|
|
|
uint8_t execute_file (const char * fname){
|
|
FRESULT res;
|
|
FIL file;
|
|
UINT readbytes;
|
|
void (*dst)(void);
|
|
|
|
/* XXX: why doesn't this work? sram_top contains garbage?
|
|
dst=(void (*)(void)) (sram_top);
|
|
lcdPrint("T:"); lcdPrintIntHex(dst); lcdNl();
|
|
*/
|
|
dst=(void (*)(void)) (0x10002000 - RAMCODE);
|
|
|
|
res=f_open(&file, fname, FA_OPEN_EXISTING|FA_READ);
|
|
|
|
//lcdPrint("open: ");
|
|
//lcdPrintln(f_get_rc_string(res));
|
|
//lcdRefresh();
|
|
if(res){
|
|
return -1;
|
|
};
|
|
|
|
res = f_read(&file, (char *)dst, RAMCODE, &readbytes);
|
|
//lcdPrint("read: ");
|
|
//lcdPrintln(f_get_rc_string(res));
|
|
//lcdRefresh();
|
|
if(res){
|
|
return -1;
|
|
};
|
|
#ifdef ENCRYPT_L0DABLE
|
|
uint32_t *data;
|
|
uint32_t len;
|
|
uint32_t mac[4];
|
|
data = (uint32_t*)dst;
|
|
len = readbytes/4;
|
|
|
|
if( readbytes & 0xF || readbytes <= 0x10){
|
|
lcdClear();
|
|
lcdPrint("!size");
|
|
lcdRefresh();
|
|
getInputWait();
|
|
getInputWaitRelease();
|
|
return -1;
|
|
}
|
|
|
|
xxtea_cbcmac(mac, (uint32_t*)dst, len-4, l0dable_sign_key);
|
|
if( data[len-4] != mac[0] || data[len-3] != mac[1]
|
|
|| data[len-2] != mac[2] || data[len-1] != mac[3] ){
|
|
lcdClear();
|
|
lcdPrint("!mac");
|
|
//lcdPrintIntHex(mac[0]); lcdNl();
|
|
//lcdPrintIntHex(mac[1]); lcdNl();
|
|
//lcdPrintIntHex(mac[2]); lcdNl();
|
|
//lcdPrintIntHex(mac[3]); lcdNl();
|
|
lcdRefresh();
|
|
getInputWait();
|
|
getInputWaitRelease();
|
|
return -1;
|
|
}
|
|
data = (uint32_t*)dst;
|
|
len = readbytes/4;
|
|
xxtea_decode_words(data, len-4, l0dable_crypt_key);
|
|
#endif
|
|
|
|
dst=(void (*)(void)) ((uint32_t)(dst) | 1); // Enable Thumb mode!
|
|
dst();
|
|
return 0;
|
|
|
|
};
|
|
|
|
/**************************************************************************/
|
|
|
|
void executeSelect(char *ext){
|
|
char filename[15];
|
|
filename[0]='0';
|
|
filename[1]=':';
|
|
filename[2]=0;
|
|
|
|
if( selectFile(filename+2,ext) == 0)
|
|
execute_file(filename);
|
|
};
|
|
|