Made it easier to change your PIN, added PIN file deletion when needed

source/config.c

@@ -27,6 +27,7 @@
 #include "screen.h"
 #include "draw.h"
 #include "buttons.h"
+#include "pin.h"
 
 bool readConfig(const char *configPath)
 {
@@ -64,7 +65,7 @@ void writeConfig(const char *configPath, u32 configTemp)
     }
 }
 
-void configMenu(void)
+void configMenu(bool oldPinStatus)
 {
     initScreens();
 
@@ -231,6 +232,11 @@ void configMenu(void)
     for(u32 i = 0; i < singleOptionsAmount; i++)
         configData.config |= (singleOptions[i].enabled ? 1 : 0) << (i + 16);
 
+    if(CONFIG(8)) newPin(oldPinStatus);
+    else if(oldPinStatus) fileDelete("/luma/pin.bin");
+
     //Wait for the pressed buttons to change
-    while(HID_PAD == BUTTON_START);
+    while(HID_PAD & PIN_BUTTONS);
+
+    chrono(2);
 }

source/config.h

@@ -43,4 +43,4 @@ extern cfgData configData;
 
 bool readConfig(const char *configPath);
 void writeConfig(const char *configPath, u32 configTemp);
-void configMenu(void);
+void configMenu(bool oldPinStatus);

source/firm.c

@@ -141,11 +141,7 @@ void main(void)
 
             if(shouldLoadConfigMenu)
             {
-                configMenu();
-
-                if(!pinExists && CONFIG(8)) newPin();
-
-                chrono(2);
+                configMenu(pinExists);
 
                 //Update pressed buttons
                 pressed = HID_PAD;

source/fs.c

@@ -76,6 +76,11 @@ bool fileWrite(const void *buffer, const char *path, u32 size)
     return false;
 }
 
+void fileDelete(const char *path)
+{
+    f_unlink(path);
+}
+
 void createDirectory(const char *path)
 {
     f_mkdir(path);

source/fs.h

@@ -32,6 +32,7 @@ void mountFs(void);
 u32 fileRead(void *dest, const char *path);
 u32 getFileSize(const char *path);
 bool fileWrite(const void *buffer, const char *path, u32 size);
+void fileDelete(const char *path);
 void createDirectory(const char *path);
 void loadPayload(u32 pressed);
 u32 firmRead(void *dest, u32 firmType);

source/pin.c

@@ -60,11 +60,12 @@ static inline char PINKeyToLetter(u32 pressed)
     return keys[31 - i];
 }
 
-void newPin(void)
+void newPin(bool allowSkipping)
 {
     clearScreens();
 
-    drawString("Enter a new PIN to proceed", 10, 10, COLOR_TITLE);
+    char *title = allowSkipping ? "Press START to skip or enter a new PIN" : "Enter a new PIN to proceed";
+    drawString(title, 10, 10, COLOR_TITLE);
     drawString("PIN: ", 10, 10 + 2 * SPACING_Y, COLOR_WHITE);
 
     //Pad to AES block length with zeroes
@@ -80,10 +81,12 @@ void newPin(void)
         {
             pressed = waitInput();
         }
-        while(!(pressed & PIN_BUTTONS & ~BUTTON_START));
+        while(!(pressed & PIN_BUTTONS));
 
-        pressed &= PIN_BUTTONS & ~BUTTON_START;
+        pressed &= PIN_BUTTONS;
+        if(!allowSkipping) pressed &= ~BUTTON_START;
 
+        if(pressed & BUTTON_START) return;
         if(!pressed) continue;
 
         char key = PINKeyToLetter(pressed);
@@ -114,8 +117,6 @@ void newPin(void)
         if(!fileWrite(&pin, "/luma/pin.bin", sizeof(PINData)))
             error("Error writing the PIN file");
     }
-
-    while(HID_PAD & PIN_BUTTONS);
 }
 
 void verifyPin(PINData *in)
@@ -143,9 +144,7 @@ void verifyPin(PINData *in)
 
         if(pressed & BUTTON_START) mcuPowerOff();
 
-        pressed &= PIN_BUTTONS & ~BUTTON_START;
-
-        if(!pressed) continue;
+        pressed &= PIN_BUTTONS;
 
         char key = PINKeyToLetter(pressed);
         enteredPassword[cnt++] = (u8)key; //Add character to password

source/pin.h

@@ -44,5 +44,5 @@ typedef struct __attribute__((packed))
 } PINData;
 
 bool readPin(PINData* out);
-void newPin(void);
+void newPin(bool allowSkipping);
 void verifyPin(PINData *in);