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Use random keysequences and increase length for dangerous ones

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d0k3 2017-11-22 01:52:07 +01:00
parent 534174e630
commit bf2ce1a37c
1 changed files with 28 additions and 26 deletions
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54
arm9/source/common/ui.c
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@ -316,28 +316,14 @@ bool ShowPrompt(bool ask, const char *format, ...)
return ret; return ret;
} }
#define PRNG (*(volatile u32*)0x10011000)
bool ShowUnlockSequence(u32 seqlvl, const char *format, ...) { bool ShowUnlockSequence(u32 seqlvl, const char *format, ...) {
const char dpad_symbols[] = { '\x1A', '\x1B', '\x18', '\x19' }; // R L D U
const int seqcolors[7] = { COLOR_STD_FONT, COLOR_BRIGHTGREEN, COLOR_BRIGHTYELLOW, const int seqcolors[7] = { COLOR_STD_FONT, COLOR_BRIGHTGREEN, COLOR_BRIGHTYELLOW,
COLOR_ORANGE, COLOR_BRIGHTBLUE, COLOR_RED, COLOR_DARKRED }; COLOR_ORANGE, COLOR_BRIGHTBLUE, COLOR_RED, COLOR_DARKRED };
const u32 sequences[7][5] = { const u32 seqlen_max = 7;
{ BUTTON_RIGHT, BUTTON_DOWN, BUTTON_RIGHT, BUTTON_DOWN, BUTTON_A }, const u32 seqlen = seqlen_max - ((seqlvl < 3) ? 2 : (seqlvl < 4) ? 1 : 0);
{ BUTTON_LEFT, BUTTON_DOWN, BUTTON_RIGHT, BUTTON_UP, BUTTON_A },
{ BUTTON_LEFT, BUTTON_RIGHT, BUTTON_DOWN, BUTTON_UP, BUTTON_A },
{ BUTTON_LEFT, BUTTON_UP, BUTTON_RIGHT, BUTTON_UP, BUTTON_A },
{ BUTTON_RIGHT, BUTTON_DOWN, BUTTON_LEFT, BUTTON_DOWN, BUTTON_A },
{ BUTTON_DOWN, BUTTON_LEFT, BUTTON_UP, BUTTON_LEFT, BUTTON_A },
{ BUTTON_UP, BUTTON_DOWN, BUTTON_LEFT, BUTTON_RIGHT, BUTTON_A }
};
const char seqsymbols[7][5] = {
{ '\x1A', '\x19', '\x1A', '\x19', 'A' },
{ '\x1B', '\x19', '\x1A', '\x18', 'A' },
{ '\x1B', '\x1A', '\x19', '\x18', 'A' },
{ '\x1B', '\x18', '\x1A', '\x18', 'A' },
{ '\x1A', '\x19', '\x1B', '\x19', 'A' },
{ '\x19', '\x1B', '\x18', '\x1B', 'A' },
{ '\x18', '\x19', '\x1B', '\x1A', 'A' }
};
const u32 len = 5;
u32 color_bg = COLOR_STD_BG; u32 color_bg = COLOR_STD_BG;
u32 color_font = COLOR_STD_FONT; u32 color_font = COLOR_STD_FONT;
@ -348,6 +334,22 @@ bool ShowUnlockSequence(u32 seqlvl, const char *format, ...) {
u32 str_width, str_height; u32 str_width, str_height;
u32 x, y; u32 x, y;
// generate sequence
u32 sequence[seqlen_max];
char seqsymbols[seqlen_max];
u32 lastlsh = (u32) -1;
for (u32 n = 0; n < (seqlen-1); n++) {
u32 lsh = lastlsh;
while (lsh == lastlsh) lsh = (PRNG & 0x3);
lastlsh = lsh;
sequence[n] = BUTTON_RIGHT << lsh;
seqsymbols[n] = dpad_symbols[lsh];
}
sequence[seqlen-1] = BUTTON_A;
seqsymbols[seqlen-1] = 'A';
char str[STRBUF_SIZE] = { 0 }; char str[STRBUF_SIZE] = { 0 };
va_list va; va_list va;
va_start(va, format); va_start(va, format);
@ -372,26 +374,26 @@ bool ShowUnlockSequence(u32 seqlvl, const char *format, ...) {
DrawStringF(MAIN_SCREEN, x, y + str_height - 28, color_font, color_bg, "To proceed, enter this:"); DrawStringF(MAIN_SCREEN, x, y + str_height - 28, color_font, color_bg, "To proceed, enter this:");
while (true) { while (true) {
for (u32 n = 0; n < len; n++) { for (u32 n = 0; n < seqlen; n++) {
DrawStringF(MAIN_SCREEN, x + (n*4*8), y + str_height - 18, DrawStringF(MAIN_SCREEN, x + (n*4*FONT_WIDTH_EXT), y + str_height - 18,
(lvl > n) ? color_on : color_off, color_bg, "<%c>", seqsymbols[seqlvl][n]); (lvl > n) ? color_on : color_off, color_bg, "<%c>", seqsymbols[n]);
} }
if (lvl == len) if (lvl == seqlen)
break; break;
u32 pad_state = InputWait(0); u32 pad_state = InputWait(0);
if (!(pad_state & BUTTON_ANY)) if (!(pad_state & BUTTON_ANY))
continue; continue;
else if (pad_state & sequences[seqlvl][lvl]) else if (pad_state & sequence[lvl])
lvl++; lvl++;
else if (pad_state & BUTTON_B) else if (pad_state & BUTTON_B)
break; break;
else if (lvl == 0 || !(pad_state & sequences[seqlvl][lvl-1])) else if (lvl == 0 || !(pad_state & sequence[lvl-1]))
lvl = 0; lvl = 0;
} }
ClearScreenF(true, false, COLOR_STD_BG); ClearScreenF(true, false, COLOR_STD_BG);
return (lvl >= len); return (lvl >= seqlen);
} }
u32 ShowSelectPrompt(u32 n, const char** options, const char *format, ...) { u32 ShowSelectPrompt(u32 n, const char** options, const char *format, ...) {