[iso] fix detection of GRUB version

* Commit 77d319267f broke lookup of ISO filenames since iso9660_open()
  enabled the Rock Ridge extensions by default, despite using ISO_EXTENSION_NONE
  for the internal call, and we addressed a FIXME related to this.
* This resulted in Rufus not being able to lookup 'boot/grub/i386-pc/normal.mod' to parse GRUB's
  version, since without Rock Ridge, 'i386-pc/' is unable to match the ISO-9660 'I386_PC/' dir.
* Closes #1573 and addresses part of #1616.
* Also fix a MinGW compilation warning.

src/drive.c

@@ -406,7 +406,7 @@ char* AltGetLogicalName(DWORD DriveIndex, uint64_t PartitionOffset, BOOL bKeepTr
 	static_strcpy(volume_name, groot_name);
 	if (!QueryDosDeviceA(path, &volume_name[groot_len], (DWORD)(MAX_PATH - groot_len)) || (strlen(volume_name) < 20)) {
 		suprintf("Could not find a DOS volume name for '%s': %s", path, WindowsErrorString());
-			goto out;
+		goto out;
 	} else if (bKeepTrailingBackslash) {
 		static_strcat(volume_name, "\\");
 	}

src/iso.c

@@ -59,6 +59,10 @@
 #define S_IFLNK                   0xA000
 #define S_ISLNK(m)                (((m) & S_IFMT) == S_IFLNK)
 
+// Set the iso_open_ext() extension mask according to our global options
+#define ISO_EXTENSION_MASK        (ISO_EXTENSION_ALL & (enable_joliet ? ISO_EXTENSION_ALL : ~ISO_EXTENSION_JOLIET) & \
+                                  (enable_rockridge ? ISO_EXTENSION_ALL : ~ISO_EXTENSION_ROCK_RIDGE))
+
 // Needed for UDF ISO access
 CdIo_t* cdio_open (const char* psz_source, driver_id_t driver_id) {return NULL;}
 void cdio_destroy (CdIo_t* p_cdio) {}
@@ -1181,7 +1185,9 @@ int64_t ExtractISOFile(const char* iso, const char* iso_file, const char* dest_f
 	goto out;
 
 try_iso:
-	p_iso = iso9660_open(iso);
+	// Make sure to enable extensions, else we may not match the name of the file we are looking
+	// for since Rock Ridge may be needed to translate something like 'I386_PC' into 'i386-pc'...
+	p_iso = iso9660_open_ext(iso, ISO_EXTENSION_MASK);
 	if (p_iso == NULL) {
 		uprintf("Unable to open image '%s'", iso);
 		goto out;
@@ -1266,7 +1272,7 @@ uint32_t GetInstallWimVersion(const char* iso)
 	goto out;
 
 try_iso:
-	p_iso = iso9660_open(iso);
+	p_iso = iso9660_open_ext(iso, ISO_EXTENSION_MASK);
 	if (p_iso == NULL) {
 		uprintf("Could not open image '%s'", iso);
 		goto out;
@@ -1353,7 +1359,7 @@ BOOL HasEfiImgBootLoaders(void)
 	if ((image_path == NULL) || !HAS_EFI_IMG(img_report))
 		return FALSE;
 
-	p_iso = iso9660_open(image_path);
+	p_iso = iso9660_open_ext(image_path, ISO_EXTENSION_MASK);
 	if (p_iso == NULL) {
 		uprintf("Could not open image '%s' as an ISO-9660 file system", image_path);
 		goto out;
@@ -1444,7 +1450,7 @@ BOOL DumpFatDir(const char* path, int32_t cluster)
 		// Root dir => Perform init stuff
 		if (image_path == NULL)
 			return FALSE;
-		p_iso = iso9660_open(image_path);
+		p_iso = iso9660_open_ext(image_path, ISO_EXTENSION_MASK);
 		if (p_iso == NULL) {
 			uprintf("Could not open image '%s' as an ISO-9660 file system", image_path);
 			goto out;

src/rufus.h

@@ -482,7 +482,6 @@ extern char *image_path, *fido_url;
 /*
  * Shared prototypes
  */
-extern uint8_t popcnt8(uint8_t val);
 extern void GetWindowsVersion(void);
 extern BOOL is_x64(void);
 extern BOOL GetCpuArch(void);

src/rufus.rc

@@ -33,7 +33,7 @@ LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
 IDD_DIALOG DIALOGEX 12, 12, 232, 326
 STYLE DS_SETFONT | DS_MODALFRAME | DS_CENTER | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | WS_SYSMENU
 EXSTYLE WS_EX_ACCEPTFILES
-CAPTION "Rufus 3.12.1701"
+CAPTION "Rufus 3.12.1702"
 FONT 9, "Segoe UI Symbol", 400, 0, 0x0
 BEGIN
     LTEXT           "Drive Properties",IDS_DRIVE_PROPERTIES_TXT,8,6,53,12,NOT WS_GROUP
@@ -395,8 +395,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 3,12,1701,0
+ FILEVERSION 3,12,1702,0
- PRODUCTVERSION 3,12,1701,0
+ PRODUCTVERSION 3,12,1702,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -414,13 +414,13 @@ BEGIN
             VALUE "Comments", "https://rufus.ie"
             VALUE "CompanyName", "Akeo Consulting"
             VALUE "FileDescription", "Rufus"
-            VALUE "FileVersion", "3.12.1701"
+            VALUE "FileVersion", "3.12.1702"
             VALUE "InternalName", "Rufus"
             VALUE "LegalCopyright", "© 2011-2020 Pete Batard (GPL v3)"
             VALUE "LegalTrademarks", "https://www.gnu.org/licenses/gpl-3.0.html"
             VALUE "OriginalFilename", "rufus-3.12.exe"
             VALUE "ProductName", "Rufus"
-            VALUE "ProductVersion", "3.12.1701"
+            VALUE "ProductVersion", "3.12.1702"
         END
     END
     BLOCK "VarFileInfo"