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[iso] add smart testing for Rock Ridge over Joliet

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* Some ISO9660 images (such as Ubuntu) use both Joliet and Rock Ridge,
  so we have to make a choice which should be preferred.
* Since Rock Ridge allows a greater filename length compared to Joliet,
  we perform our scan pass with Joliet disabled, to find out if RR is
  being used and if a filename longer than 64 chars exist. If that is
  the case, we'll perform the extraction using RR, else we'll use Joliet.
* Also add Alt-J and Alt-K to toggle Joliet/Rock Ridge
* Closes #178
This commit is contained in:
Pete Batard 2013-10-14 00:02:32 +01:00
parent 5b2e4d1721
commit 3c438db3fd
4 changed files with 47 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

24
src/iso.c
View file

@ -53,6 +53,7 @@ void cdio_destroy (CdIo_t* p_cdio) {}
RUFUS_ISO_REPORT iso_report;
int64_t iso_blocking_status = -1;
BOOL enable_joliet = TRUE, enable_rockridge = TRUE;
#define ISO_BLOCKING(x) do {x; iso_blocking_status++; } while(0)
static const char* psz_extract_dir;
static const char* bootmgr_efi_name = "bootmgr.efi";
@ -327,11 +328,13 @@ static int iso_extract_files(iso9660_t* p_iso, const char *psz_path)
if ( (strcmp(p_statbuf->filename, ".") == 0)
|| (strcmp(p_statbuf->filename, "..") == 0) )
continue;
// Rock Ridge requires an exception (Can't people just use Joliet?)
if (p_statbuf->rr.b3_rock != yep) {
iso9660_name_translate_ext(p_statbuf->filename, psz_basename, i_joliet_level);
} else {
// Rock Ridge requires an exception
if ((p_statbuf->rr.b3_rock == yep) && enable_rockridge) {
safe_strcpy(psz_basename, sizeof(psz_fullpath)-i_length-1, p_statbuf->filename);
if (safe_strlen(p_statbuf->filename) > 64)
iso_report.has_long_filename = TRUE;
} else {
iso9660_name_translate_ext(p_statbuf->filename, psz_basename, i_joliet_level);
}
if (p_statbuf->type == _STAT_DIR) {
if (!scan_only) _mkdirU(psz_fullpath);
@ -419,6 +422,7 @@ BOOL ExtractISO(const char* src_iso, const char* dest_dir, BOOL scan)
const char* scan_text = "Scanning ISO image...";
const char* basedir[] = { "i386", "minint" };
const char* tmp_sif = ".\\txtsetup.sif~";
iso_extension_mask_t iso_extension_mask = ISO_EXTENSION_ALL;
if ((src_iso == NULL) || (dest_dir == NULL))
return FALSE;
@ -472,7 +476,17 @@ BOOL ExtractISO(const char* src_iso, const char* dest_dir, BOOL scan)
goto out;
try_iso:
p_iso = iso9660_open_ext(src_iso, ISO_EXTENSION_ALL);
// Perform our first scan with Joliet disabled (if Rock Ridge is enabled), so that we can find if
// there exists a Rock Ridge file with a name > 64 chars. If that is the case (has_long_filename)
// then we also disable Joliet during the extract phase.
if ((!enable_joliet) || (scan_only && enable_rockridge) || (iso_report.has_long_filename && enable_rockridge)) {
iso_extension_mask &= ~ISO_EXTENSION_JOLIET;
}
if (!enable_rockridge) {
iso_extension_mask &= ~ISO_EXTENSION_ROCK_RIDGE;
}
p_iso = iso9660_open_ext(src_iso, iso_extension_mask);
if (p_iso == NULL) {
uprintf("Unable to open image '%s'.\n", src_iso);
goto out;

27
src/rufus.c
View file

@ -99,7 +99,7 @@ static BOOL existing_key = FALSE; // For LGP set/restore
static BOOL size_check = TRUE;
static BOOL log_displayed = FALSE;
static BOOL iso_provided = FALSE;
extern BOOL force_large_fat32;
extern BOOL force_large_fat32, enable_joliet, enable_rockridge;
static int selection_default;
char msgbox[1024], msgbox_title[32];
@ -1034,8 +1034,10 @@ DWORD WINAPI ISOScanThread(LPVOID param)
safe_free(iso_path);
goto out;
}
uprintf("ISO label: '%s'\r\n Size: %lld bytes\r\n Has a >4GB file: %s\r\n Uses EFI: %s%s\r\n Uses Bootmgr: %s\r\n Uses WinPE: %s%s\r\n Uses isolinux: %s %s\n",
iso_report.label, iso_report.projected_size, iso_report.has_4GB_file?"Yes":"No", (iso_report.has_efi || iso_report.has_win7_efi)?"Yes":"No",
uprintf("ISO label: '%s'\r\n Size: %lld bytes\r\n Has a >64 chars filename: %s\r\n Has a >4GB file: %s\r\n"
" Uses EFI: %s%s\r\n Uses Bootmgr: %s\r\n Uses WinPE: %s%s\r\n Uses isolinux: %s %s\n",
iso_report.label, iso_report.projected_size, iso_report.has_long_filename?"Yes":"No",
iso_report.has_4GB_file?"Yes":"No", (iso_report.has_efi || iso_report.has_win7_efi)?"Yes":"No",
(iso_report.has_win7_efi && (!iso_report.has_efi))?" (win7_x64)":"", iso_report.has_bootmgr?"Yes":"No",
IS_WINPE(iso_report.winpe)?"Yes":"No", (iso_report.uses_minint)?" (with /minint)":"", iso_report.has_isolinux?"Yes":"No",
iso_report.has_syslinux_v5?"(v5.0 or later)":iso_report.has_isolinux?"(v4.x or earlier)":"");
@ -2056,12 +2058,27 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
existing_key = FALSE;
continue;
}
// Alt K => Toggle fake drive detection during bad blocks check
// Alt J => Toggle Joliet support for ISO9660 images
// Some ISOs (Ubuntu) have Joliet extensions but expect applications not to use them,
// due to their reliance on filenames that are > 64 chars (the Joliet max length for
// a file name). This option allows users to ignore Joliet when using such images.
if ((msg.message == WM_SYSKEYDOWN) && (msg.wParam == 'J')) {
enable_joliet = !enable_joliet;
PrintStatus2000("Joliet support", enable_joliet);
continue;
}
// Alt K => Toggle Rock Ridge support for ISO9660 image
if ((msg.message == WM_SYSKEYDOWN) && (msg.wParam == 'K')) {
enable_rockridge = !enable_rockridge;
PrintStatus2000("Rock Ridge support", enable_rockridge);
continue;
}
// Alt L => Toggle fake drive detection during bad blocks check
// By default, Rufus will check for fake USB flash drives that mistakenly present
// more capacity than they already have by looping over the flash. This check which
// is enabled by default is performed by writing the block number sequence and reading
// it back during the bad block check.
if ((msg.message == WM_SYSKEYDOWN) && (msg.wParam == 'K')) {
if ((msg.message == WM_SYSKEYDOWN) && (msg.wParam == 'L')) {
detect_fakes = !detect_fakes;
PrintStatus2000("Fake drive detection", detect_fakes);
continue;

1
src/rufus.h
View file

@ -214,6 +214,7 @@ typedef struct {
// TODO: use a bitmask and #define tests for the following
uint8_t winpe;
BOOL has_4GB_file;
BOOL has_long_filename;
BOOL has_bootmgr;
BOOL has_efi;
BOOL has_win7_efi;

10
src/rufus.rc
View file

@ -30,7 +30,7 @@ LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDD_DIALOG DIALOGEX 12, 12, 206, 329
STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP | WS_CAPTION | WS_SYSMENU
EXSTYLE WS_EX_APPWINDOW
CAPTION "Rufus v1.3.4.278"
CAPTION "Rufus v1.3.4.279"
FONT 8, "MS Shell Dlg", 400, 0, 0x1
BEGIN
DEFPUSHBUTTON "Start",IDC_START,94,291,50,14
@ -278,8 +278,8 @@ END
//
VS_VERSION_INFO VERSIONINFO
FILEVERSION 1,3,4,278
PRODUCTVERSION 1,3,4,278
FILEVERSION 1,3,4,279
PRODUCTVERSION 1,3,4,279
FILEFLAGSMASK 0x3fL
#ifdef _DEBUG
FILEFLAGS 0x1L
@ -296,13 +296,13 @@ BEGIN
BEGIN
VALUE "CompanyName", "Akeo Consulting (http://akeo.ie)"
VALUE "FileDescription", "Rufus"
VALUE "FileVersion", "1.3.4.278"
VALUE "FileVersion", "1.3.4.279"
VALUE "InternalName", "Rufus"
VALUE "LegalCopyright", "© 2011-2013 Pete Batard (GPL v3)"
VALUE "LegalTrademarks", "http://www.gnu.org/copyleft/gpl.html"
VALUE "OriginalFilename", "rufus.exe"
VALUE "ProductName", "Rufus"
VALUE "ProductVersion", "1.3.4.278"
VALUE "ProductVersion", "1.3.4.279"
END
END
BLOCK "VarFileInfo"