From 92cc989dc9a1d205da7d0467435da7bb484574d3 Mon Sep 17 00:00:00 2001
From: John Kearney <arbingordon@gmail.com>
Date: Thu, 19 Jan 2017 16:48:09 -0500
Subject: [PATCH] Add pin hiding option

---
 source/config.c | 7 ++++++-
 source/config.h | 3 ++-
 source/main.c   | 3 ++-
 source/pin.c    | 6 +++---
 source/pin.h    | 2 +-
 5 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/source/config.c b/source/config.c
index f5b954b..48e4b75 100644
--- a/source/config.c
+++ b/source/config.c
@@ -83,7 +83,8 @@ void configMenu(bool isSdMode, bool oldPinStatus, u32 oldPinMode)
                                         "( ) Enable game patching",
                                         "( ) Show NAND or user string in System Settings",
                                         "( ) Show GBA boot screen in patched AGB_FIRM",
-                                        "( ) Patch SVC/service/archive/ARM9 access"
+                                        "( ) Patch SVC/service/archive/ARM9 access",
+                                        "( ) Hide Pin when entering"
                                       };
 
     const char *optionsDescription[]  = { "Select the default EmuNAND.\n\n"
@@ -190,6 +191,9 @@ void configMenu(bool isSdMode, bool oldPinStatus, u32 oldPinMode)
                                           "9.3 and 10.4.\n\n"
                                           "Only change this if you know what you\n"
                                           "are doing!",
+                                          
+                                          "Hides the the input when entering pin\n"
+                                          "to unlock the 3DS"
                                        };
 
     struct multiOption {
@@ -218,6 +222,7 @@ void configMenu(bool isSdMode, bool oldPinStatus, u32 oldPinMode)
         { .visible = true },
         { .visible = true },
         { .visible = true },
+        { .visible = true },
         { .visible = true }
     };
 
diff --git a/source/config.h b/source/config.h
index acfd4b9..905d4c9 100644
--- a/source/config.h
+++ b/source/config.h
@@ -56,7 +56,8 @@ enum singleOptions
     PATCHGAMES,
     PATCHVERSTRING,
     SHOWGBABOOT,
-    PATCHACCESS
+    PATCHACCESS,
+    HIDEPIN
 };
 
 typedef enum ConfigurationStatus
diff --git a/source/main.c b/source/main.c
index e1e976f..d8267f4 100644
--- a/source/main.c
+++ b/source/main.c
@@ -124,7 +124,8 @@ void main(void)
     }
 
     u32 pinMode = MULTICONFIG(PIN);
-    bool pinExists = pinMode != 0 && verifyPin(pinMode);
+    bool hidePin = CONFIG(HIDEPIN);
+    bool pinExists = pinMode != 0 && verifyPin(pinMode, hidePin);
 
     //If no configuration file exists or SELECT is held, load configuration menu
     bool shouldLoadConfigMenu = needConfig == CREATE_CONFIGURATION || ((pressed & (BUTTON_SELECT | BUTTON_L1)) == BUTTON_SELECT);
diff --git a/source/pin.c b/source/pin.c
index 9426661..935343c 100644
--- a/source/pin.c
+++ b/source/pin.c
@@ -122,7 +122,7 @@ void newPin(bool allowSkipping, u32 pinMode)
         error("Error writing the PIN file");
 }
 
-bool verifyPin(u32 pinMode)
+bool verifyPin(u32 pinMode, bool hidePin)
 {
     PinData pin;
 
@@ -199,9 +199,9 @@ bool verifyPin(u32 pinMode)
 
         //Add character to password
         enteredPassword[cnt] = (u8)pinKeyToLetter(pressed);
-
         //Visualize character on screen
-        drawCharacter((char)enteredPassword[cnt], true, 10 + (16 + 2 * cnt) * SPACING_X, 10 + 3 * SPACING_Y, COLOR_WHITE);
+        char display = hidePin ? '*' : (char)enteredPassword[cnt];
+        drawCharacter(display, true, 10 + (16 + 2 * cnt) * SPACING_X, 10 + 3 * SPACING_Y, COLOR_WHITE);
 
         if(++cnt < lengthBlock[0]) continue;
 
diff --git a/source/pin.h b/source/pin.h
index c781508..a6c18fc 100644
--- a/source/pin.h
+++ b/source/pin.h
@@ -33,4 +33,4 @@
 #define PIN_VERSIONMINOR 3
 
 void newPin(bool allowSkipping, u32 pinMode);
-bool verifyPin(u32 pinMode);
\ No newline at end of file
+bool verifyPin(u32 pinMode, bool hidePin);
\ No newline at end of file