X-Git-Url: https://code.delx.au/refind/blobdiff_plain/71f1ea86f5e97c4da1adadcc62685c4030f2d740..346735a39ca8b64c8278ba342a633b5acce0159b:/gptsync/os_efi.c

diff --git a/gptsync/os_efi.c b/gptsync/os_efi.c
index e40037f..9559014 100644
--- a/gptsync/os_efi.c
+++ b/gptsync/os_efi.c
@@ -149,8 +149,6 @@ UINTN input_boolean(CHARN *prompt, BOOLEAN *bool_out)
 
 #ifdef __MAKEWITH_TIANO
 
-extern EFI_DXE_SERVICES  *gDS;
-
 // EFI_GUID gEfiDxeServicesTableGuid = { 0x05AD34BA, 0x6F02, 0x4214, { 0x95, 0x2E, 0x4D, 0xA0, 0x39, 0x8E, 0x2B, 0xB9 }};
 
 // Minimal initialization function
@@ -160,7 +158,6 @@ static VOID InitializeLib(IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *System
    gBS            = SystemTable->BootServices;
    //    gRS            = SystemTable->RuntimeServices;
    gRT = SystemTable->RuntimeServices; // Some BDS functions need gRT to be set
-//   EfiGetSystemConfigurationTable (&gEfiDxeServicesTableGuid, (VOID **) &gDS);
 
 //   InitializeConsoleSim();
 }
@@ -172,13 +169,29 @@ static VOID InitializeLib(IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *System
 
 #endif
 
+// Performs a case-insensitive string comparison. This function is necesary
+// because some EFIs have buggy StriCmp() functions that actually perform
+// case-sensitive comparisons.
+// Returns TRUE if strings are identical, FALSE otherwise.
+static BOOLEAN MyStriCmp(IN CHAR16 *FirstString, IN CHAR16 *SecondString) {
+    if (FirstString && SecondString) {
+        while ((*FirstString != L'\0') && ((*FirstString & ~0x20) == (*SecondString & ~0x20))) {
+                FirstString++;
+                SecondString++;
+        }
+        return (*FirstString == *SecondString);
+    } else {
+        return FALSE;
+    }
+} // BOOLEAN MyStriCmp()
+
 // Check firmware vendor; get verification to continue if it's not Apple.
 // Returns TRUE if Apple firmware or if user assents to use, FALSE otherwise.
 static BOOLEAN VerifyGoOn(VOID) {
    BOOLEAN GoOn = TRUE;
    UINTN invalid;
 
-   if (StriCmp(L"Apple", ST->FirmwareVendor) != 0) {
+   if (MyStriCmp(L"Apple", ST->FirmwareVendor)) {
       Print(L"Your firmware is made by %s.\n", ST->FirmwareVendor);
       Print(L"Ordinarily, a hybrid MBR (which this program creates) should be used ONLY on\n");
       Print(L"Apple Macs that dual-boot with Windows or some other BIOS-mode OS. Are you\n");