BOOL ExtractISO(const char* src_iso, const char* dest_dir, BOOL scan)
{
size_t i, size;
int j;
uint16_t sl_version;
FILE* fd;
int r = 1;
iso9660_t* p_iso = NULL;
udf_t* p_udf = NULL;
udf_dirent_t* p_udf_root;
char *tmp, *buf, *ext;
char path[MAX_PATH], path2[16];
const char* basedir[] = { "i386", "minint" };
const char* tmp_sif = ".\\txtsetup.sif~";
iso_extension_mask_t iso_extension_mask = ISO_EXTENSION_ALL;
if ((!enable_iso) || (src_iso == NULL) || (dest_dir == NULL))
return FALSE;
scan_only = scan;
cdio_log_set_handler(log_handler);
psz_extract_dir = dest_dir;
// Change progress style to marquee for scanning
if (scan_only) {
SendMessage(hMainDialog, UM_PROGRESS_INIT, PBS_MARQUEE, 0);
total_blocks = 0;
memset(&iso_report, 0, sizeof(iso_report));
has_ldlinux_c32 = FALSE;
// String array of all isolinux/syslinux locations
StrArrayCreate(&config_path, 8);
StrArrayCreate(&isolinux_path, 8);
PrintInfo(0, MSG_202);
} else {
uprintf("Extracting files...\n");
IGNORE_RETVAL(_chdirU(app_dir));
PrintInfo(0, MSG_231);
if (total_blocks == 0) {
uprintf("Error: ISO has not been properly scanned.\n");
FormatStatus = ERROR_SEVERITY_ERROR|FAC(FACILITY_STORAGE)|APPERR(ERROR_ISO_SCAN);
goto out;
}
nb_blocks = 0;
iso_blocking_status = 0;
}
/* First try to open as UDF - fallback to ISO if it failed */
p_udf = udf_open(src_iso);
if (p_udf == NULL)
goto try_iso;
uprintf("Disc image is an UDF image\n");
p_udf_root = udf_get_root(p_udf, true, 0);
if (p_udf_root == NULL) {
uprintf("Could not locate UDF root directory\n");
goto out;
}
if (scan_only) {
if (udf_get_logical_volume_id(p_udf, iso_report.label, sizeof(iso_report.label)) <= 0)
iso_report.label[0] = 0;
}
r = udf_extract_files(p_udf, p_udf_root, "");
goto out;
try_iso:
// 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 or if there are symlinks. If that is the
// case then we also disable Joliet during the extract phase.
if ((!enable_joliet) || (enable_rockridge && (scan_only || iso_report.has_long_filename || iso_report.has_symlinks))) {
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("'%s' doesn't look like an ISO image\n", src_iso);
r = 1;
goto out;
}
uprintf("Disc image is an ISO9660 image\n");
i_joliet_level = iso9660_ifs_get_joliet_level(p_iso);
if (scan_only) {
if (iso9660_ifs_get_volume_id(p_iso, &tmp)) {
safe_strcpy(iso_report.label, sizeof(iso_report.label), tmp);
safe_free(tmp);
} else
iso_report.label[0] = 0;
} else {
if (iso_extension_mask & (ISO_EXTENSION_JOLIET|ISO_EXTENSION_ROCK_RIDGE))
uprintf("This image will be extracted using %s extensions (if present)",
(iso_extension_mask & ISO_EXTENSION_JOLIET)?"Joliet":"Rock Ridge");
else
uprintf("This image will not be extracted using any ISO extensions");
}
r = iso_extract_files(p_iso, "");
out:
iso_blocking_status = -1;
if (scan_only) {
// Remove trailing spaces from the label
for (j=(int)safe_strlen(iso_report.label)-1; ((j>=0)&&(isspaceU(iso_report.label[j]))); j--)
iso_report.label[j] = 0;
// We use the fact that UDF_BLOCKSIZE and ISO_BLOCKSIZE are the same here
iso_report.projected_size = total_blocks * ISO_BLOCKSIZE;
// We will link the existing isolinux.cfg from a syslinux.cfg we create
// If multiple config files exist, choose the one with the shortest path
// (so that a '/syslinux.cfg' is preferred over a '/isolinux/isolinux.cfg')
if (!IsStrArrayEmpty(config_path)) {
// Set the iso_report.cfg_path string to maximum length, so that we don't have to
// do a special case for StrArray entry 0.
memset(iso_report.cfg_path, '_', sizeof(iso_report.cfg_path)-1);
iso_report.cfg_path[sizeof(iso_report.cfg_path)-1] = 0;
for (i=0; i<config_path.Index; i++) {
// OpenSuse based Live image have a /syslinux.cfg that doesn't work, so we enforce
// the use of the one in '/boot/[i386|x86_64]/loader/isolinux.cfg' if present.
// Note that, because the openSuse live script are not designed to handle anything but
// an ISO9660 filesystem for the live device, this still won't allow for proper boot.
// See https://github.com/openSUSE/kiwi/issues/354
if ( (_stricmp(config_path.String[i], "/boot/i386/loader/isolinux.cfg") == 0) ||
(_stricmp(config_path.String[i], "/boot/x86_64/loader/isolinux.cfg") == 0)) {
safe_strcpy(iso_report.cfg_path, sizeof(iso_report.cfg_path), config_path.String[i]);
iso_report.needs_syslinux_overwrite = TRUE;
break;
}
// Tails uses an '/EFI/BOOT/isolinux.cfg' along with a '/isolinux/isolinux.cfg'
// which are the exact same length. However, only the /isolinux one will work,
// so for now, at equal length, always pick the latest.
// We may have to revisit this and prefer a path that contains '/isolinux' if
// this hack is not enough for other images.
if (safe_strlen(iso_report.cfg_path) >= safe_strlen(config_path.String[i]))
safe_strcpy(iso_report.cfg_path, sizeof(iso_report.cfg_path), config_path.String[i]);
}
uprintf("Will use '%s' for Syslinux\n", iso_report.cfg_path);
// Extract all of the isolinux.bin files we found to identify their versions
for (i=0; i<isolinux_path.Index; i++) {
size = (size_t)ExtractISOFile(src_iso, isolinux_path.String[i], dot_isolinux_bin, FILE_ATTRIBUTE_NORMAL);
if (size == 0) {
uprintf("Could not access %s\n", isolinux_path.String[i]);
} else {
buf = (char*)calloc(size, 1);
if (buf == NULL) break;
fd = fopen(dot_isolinux_bin, "rb");
if (fd == NULL) {
free(buf);
continue;
}
fread(buf, 1, size, fd);
fclose(fd);
sl_version = GetSyslinuxVersion(buf, size, &ext);
if (iso_report.sl_version == 0) {
safe_strcpy(iso_report.sl_version_ext, sizeof(iso_report.sl_version_ext), ext);
iso_report.sl_version = sl_version;
j = (int)i;
} else if ((iso_report.sl_version != sl_version) || (safe_strcmp(iso_report.sl_version_ext, ext) != 0)) {
uprintf("Found conflicting %s versions:\n '%s' (%d.%02d%s) vs '%s' (%d.%02d%s)\n", isolinux_bin,
isolinux_path.String[j], SL_MAJOR(iso_report.sl_version), SL_MINOR(iso_report.sl_version),
iso_report.sl_version_ext, isolinux_path.String[i], SL_MAJOR(sl_version), SL_MINOR(sl_version), ext);
}
free(buf);
_unlink(dot_isolinux_bin);
}
}
if (iso_report.sl_version != 0) {
static_sprintf(iso_report.sl_version_str, "%d.%02d",
SL_MAJOR(iso_report.sl_version), SL_MINOR(iso_report.sl_version));
uprintf("Detected Isolinux version: %s%s (from '%s')",
iso_report.sl_version_str, iso_report.sl_version_ext, isolinux_path.String[j]);
if ( (has_ldlinux_c32 && (SL_MAJOR(iso_report.sl_version) < 5))
|| (!has_ldlinux_c32 && (SL_MAJOR(iso_report.sl_version) >= 5)) )
uprintf("Warning: Conflict between Isolinux version and the presence of ldlinux.c32...\n");
} else {
// Couldn't find a version from isolinux.bin. Force set to the versions we embed
iso_report.sl_version = embedded_sl_version[has_ldlinux_c32?1:0];
static_sprintf(iso_report.sl_version_str, "%d.%02d",
SL_MAJOR(iso_report.sl_version), SL_MINOR(iso_report.sl_version));
uprintf("Warning: Could not detect Isolinux version - Forcing to %s (embedded)",
iso_report.sl_version_str);
}
}
if (IS_WINPE(iso_report.winpe)) {
// In case we have a WinPE 1.x based iso, we extract and parse txtsetup.sif
// during scan, to see if /minint was provided for OsLoadOptions, as it decides
// whether we should use 0x80 or 0x81 as the disk ID in the MBR
safe_sprintf(path, sizeof(path), "/%s/txtsetup.sif",
basedir[((iso_report.winpe&WINPE_I386) == WINPE_I386)?0:1]);
ExtractISOFile(src_iso, path, tmp_sif, FILE_ATTRIBUTE_NORMAL);
tmp = get_token_data_file("OsLoadOptions", tmp_sif);
if (tmp != NULL) {
for (i=0; i<strlen(tmp); i++)
tmp[i] = (char)tolower(tmp[i]);
uprintf("Checking txtsetup.sif:\n OsLoadOptions = %s\n", tmp);
iso_report.uses_minint = (strstr(tmp, "/minint") != NULL);
}
_unlink(tmp_sif);
safe_free(tmp);
}
if (iso_report.has_grub2) {
// In case we have a GRUB2 based iso, we extract boot/grub/i386-pc/normal.mod to parse its version
iso_report.grub2_version[0] = 0;
if ((GetTempPathU(sizeof(path), path) != 0) && (GetTempFileNameU(path, APPLICATION_NAME, 0, path) != 0)) {
size = (size_t)ExtractISOFile(src_iso, "boot/grub/i386-pc/normal.mod", path, FILE_ATTRIBUTE_NORMAL);
buf = (char*)calloc(size, 1);
fd = fopen(path, "rb");
if ((size == 0) || (buf == NULL) || (fd == NULL)) {
uprintf("Could not read Grub version from 'boot/grub/i386-pc/normal.mod'");
} else {
fread(buf, 1, size, fd);
fclose(fd);
GetGrubVersion(buf, size);
}
free(buf);
_unlink(path);
}
if (iso_report.grub2_version[0] != 0)
uprintf("Detected Grub version: %s", iso_report.grub2_version);
else {
uprintf("Could not detect Grub version");
iso_report.has_grub2 = FALSE;
}
}
StrArrayDestroy(&config_path);
StrArrayDestroy(&isolinux_path);
SendMessage(hMainDialog, UM_PROGRESS_EXIT, 0, 0);
} else if (HAS_SYSLINUX(iso_report)) {
safe_sprintf(path, sizeof(path), "%s\\syslinux.cfg", dest_dir);
// Create a /syslinux.cfg (if none exists) that points to the existing isolinux cfg
fd = fopen(path, "r");
if (fd != NULL && iso_report.needs_syslinux_overwrite) {
fclose(fd);
fd = NULL;
safe_sprintf(path2, sizeof(path2), "%s\\syslinux.org", dest_dir);
uprintf("Renaming: %s ⇨ %s", path, path2);
IGNORE_RETVAL(rename(path, path2));
}
if (fd == NULL) {
fd = fopen(path, "w"); // No "/syslinux.cfg" => create a new one
if (fd == NULL) {
uprintf("Unable to create %s - booting from USB will not work\n", path);
r = 1;
} else {
fprintf(fd, "DEFAULT loadconfig\n\nLABEL loadconfig\n CONFIG %s\n", iso_report.cfg_path);
for (i=safe_strlen(iso_report.cfg_path); (i>0)&&(iso_report.cfg_path[i]!='/'); i--);
if (i>0) {
iso_report.cfg_path[i] = 0;
fprintf(fd, " APPEND %s/\n", iso_report.cfg_path);
iso_report.cfg_path[i] = '/';
}
uprintf("Created: %s\n", path);
}
}
if (fd != NULL)
fclose(fd);
}
if (p_iso != NULL)
iso9660_close(p_iso);
if (p_udf != NULL)
udf_close(p_udf);
if ((r != 0) && (FormatStatus == 0))
FormatStatus = ERROR_SEVERITY_ERROR|FAC(FACILITY_STORAGE)|APPERR((scan_only?ERROR_ISO_SCAN:ERROR_ISO_EXTRACT));
return (r == 0);
}
BOOL ExtractISO(const char* src_iso, const char* dest_dir, BOOL scan)
{
size_t i, k, size;
int j;
uint16_t sl_version;
FILE* fd;
int r = 1;
iso9660_t* p_iso = NULL;
udf_t* p_udf = NULL;
udf_dirent_t* p_udf_root;
LONG progress_style;
char *tmp, *buf;
char path[MAX_PATH];
const char* basedir[] = { "i386", "minint" };
const char* tmp_sif = ".\\txtsetup.sif~";
const char ISOLINUX[] = { 'I', 'S', 'O', 'L', 'I', 'N', 'U', 'X', ' ' };
iso_extension_mask_t iso_extension_mask = ISO_EXTENSION_ALL;
if ((src_iso == NULL) || (dest_dir == NULL))
return FALSE;
scan_only = scan;
cdio_log_set_handler(log_handler);
psz_extract_dir = dest_dir;
progress_style = GetWindowLong(hISOProgressBar, GWL_STYLE);
if (scan_only) {
total_blocks = 0;
memset(&iso_report, 0, sizeof(iso_report));
has_ldlinux_c32 = FALSE;
// String array of all isolinux/syslinux locations
StrArrayCreate(&config_path, 8);
StrArrayCreate(&isolinux_path, 8);
// Change the Window title and static text
SetWindowTextU(hISOProgressDlg, lmprintf(MSG_202));
SetWindowTextU(hISOFileName, lmprintf(MSG_202));
// Change progress style to marquee for scanning
SetWindowLong(hISOProgressBar, GWL_STYLE, progress_style | PBS_MARQUEE);
SendMessage(hISOProgressBar, PBM_SETMARQUEE, TRUE, 0);
} else {
uprintf("Extracting files...\n");
IGNORE_RETVAL(_chdirU(app_dir));
SetWindowTextU(hISOProgressDlg, lmprintf(MSG_231));
if (total_blocks == 0) {
uprintf("Error: ISO has not been properly scanned.\n");
FormatStatus = ERROR_SEVERITY_ERROR|FAC(FACILITY_STORAGE)|APPERR(ERROR_ISO_SCAN);
goto out;
}
nb_blocks = 0;
iso_blocking_status = 0;
SetWindowLong(hISOProgressBar, GWL_STYLE, progress_style & (~PBS_MARQUEE));
SendMessage(hISOProgressBar, PBM_SETPOS, 0, 0);
}
SendMessage(hISOProgressDlg, UM_ISO_INIT, 0, 0);
/* First try to open as UDF - fallback to ISO if it failed */
p_udf = udf_open(src_iso);
if (p_udf == NULL)
goto try_iso;
uprintf("Disc image is an UDF image\n");
p_udf_root = udf_get_root(p_udf, true, 0);
if (p_udf_root == NULL) {
uprintf("Couldn't locate UDF root directory\n");
goto out;
}
if (scan_only) {
if (udf_get_logical_volume_id(p_udf, iso_report.label, sizeof(iso_report.label)) <= 0)
iso_report.label[0] = 0;
}
r = udf_extract_files(p_udf, p_udf_root, "");
goto out;
try_iso:
// 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 or if there are symlinks. If that is the
// case then we also disable Joliet during the extract phase.
if ((!enable_joliet) || (enable_rockridge && (scan_only || iso_report.has_long_filename || iso_report.has_symlinks))) {
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 '%s' as an ISO image.\n", src_iso);
r = 1;
goto out;
}
uprintf("Disc image is an ISO9660 image\n");
i_joliet_level = iso9660_ifs_get_joliet_level(p_iso);
if (scan_only) {
if (iso9660_ifs_get_volume_id(p_iso, &tmp)) {
safe_strcpy(iso_report.label, sizeof(iso_report.label), tmp);
safe_free(tmp);
} else
iso_report.label[0] = 0;
} else {
if (iso_extension_mask & (ISO_EXTENSION_JOLIET|ISO_EXTENSION_ROCK_RIDGE))
uprintf("This image will be extracted using %s extensions (if present)",
(iso_extension_mask & ISO_EXTENSION_JOLIET)?"Joliet":"Rock Ridge");
else
uprintf("This image will not be extracted using any ISO extensions");
}
r = iso_extract_files(p_iso, "");
out:
iso_blocking_status = -1;
if (scan_only) {
// Remove trailing spaces from the label
for (j=(int)safe_strlen(iso_report.label)-1; ((j>=0)&&(isspaceU(iso_report.label[j]))); j--)
iso_report.label[j] = 0;
// We use the fact that UDF_BLOCKSIZE and ISO_BLOCKSIZE are the same here
iso_report.projected_size = total_blocks * ISO_BLOCKSIZE;
// We will link the existing isolinux.cfg from a syslinux.cfg we create
// If multiple config files exist, choose the one with the shortest path
// (so that a '/syslinux.cfg' is preferred over a '/isolinux/isolinux.cfg')
if (!IsStrArrayEmpty(config_path)) {
safe_strcpy(iso_report.cfg_path, sizeof(iso_report.cfg_path), config_path.String[0]);
for (i=1; i<config_path.Index; i++) {
if (safe_strlen(iso_report.cfg_path) > safe_strlen(config_path.String[i]))
safe_strcpy(iso_report.cfg_path, sizeof(iso_report.cfg_path), config_path.String[i]);
}
uprintf("Will use %s for Syslinux\n", iso_report.cfg_path);
// Extract all of the isolinux.bin files we found to identify their versions
for (i=0; i<isolinux_path.Index; i++) {
size = (size_t)ExtractISOFile(src_iso, isolinux_path.String[i], dot_isolinux_bin);
if (size == 0) {
uprintf("Could not access %s\n", isolinux_path.String[i]);
} else {
buf = (char*)calloc(size, 1);
if (buf == NULL) break;
fd = fopen(dot_isolinux_bin, "rb");
if (fd == NULL) {
free(buf);
continue;
}
fread(buf, 1, size, fd);
fclose(fd);
for (k=0; k<size-16; k++) {
if (memcmp(&buf[k], ISOLINUX, sizeof(ISOLINUX)) == 0) {
k += sizeof(ISOLINUX);
sl_version = (((uint8_t)strtoul(&buf[k], &tmp, 10))<<8) + (uint8_t)strtoul(&tmp[1], NULL, 10);
if (iso_report.sl_version == 0) {
iso_report.sl_version = sl_version;
j = (int)i;
} else if (iso_report.sl_version != sl_version) {
uprintf("Found conflicting %s versions:\n '%s' (%d.%02d) vs '%s' (%d.%02d)\n", isolinux_bin,
isolinux_path.String[j], SL_MAJOR(iso_report.sl_version), SL_MINOR(iso_report.sl_version),
isolinux_path.String[i], SL_MAJOR(sl_version), SL_MINOR(sl_version));
}
break;
}
}
free(buf);
_unlink(dot_isolinux_bin);
}
}
if (iso_report.sl_version != 0) {
static_sprintf(iso_report.sl_version_str, "%d.%02d",
SL_MAJOR(iso_report.sl_version), SL_MINOR(iso_report.sl_version));
uprintf("Detected Isolinux version: %s (from '%s')",
iso_report.sl_version_str, isolinux_path.String[j]);
if ( (has_ldlinux_c32 && (SL_MAJOR(iso_report.sl_version) < 5))
|| (!has_ldlinux_c32 && (SL_MAJOR(iso_report.sl_version) >= 5)) )
uprintf("Warning: Conflict between Isolinux version and the presence of ldlinux.c32...\n");
} else {
// Couldn't find a version from isolinux.bin. Force set to the versions we embed
iso_report.sl_version = embedded_sl_version[has_ldlinux_c32?1:0];
static_sprintf(iso_report.sl_version_str, "%d.%02d",
SL_MAJOR(iso_report.sl_version), SL_MINOR(iso_report.sl_version));
uprintf("Warning: Could not detect Isolinux version - Forcing to %s (embedded)",
iso_report.sl_version_str);
}
}
if (IS_WINPE(iso_report.winpe)) {
// In case we have a WinPE 1.x based iso, we extract and parse txtsetup.sif
// during scan, to see if /minint was provided for OsLoadOptions, as it decides
// whether we should use 0x80 or 0x81 as the disk ID in the MBR
safe_sprintf(path, sizeof(path), "/%s/txtsetup.sif",
basedir[((iso_report.winpe&WINPE_I386) == WINPE_I386)?0:1]);
ExtractISOFile(src_iso, path, tmp_sif);
tmp = get_token_data_file("OsLoadOptions", tmp_sif);
if (tmp != NULL) {
for (i=0; i<strlen(tmp); i++)
tmp[i] = (char)tolower(tmp[i]);
uprintf("Checking txtsetup.sif:\n OsLoadOptions = %s\n", tmp);
iso_report.uses_minint = (strstr(tmp, "/minint") != NULL);
}
_unlink(tmp_sif);
safe_free(tmp);
}
StrArrayDestroy(&config_path);
StrArrayDestroy(&isolinux_path);
} else if (HAS_SYSLINUX(iso_report)) {
safe_sprintf(path, sizeof(path), "%s\\syslinux.cfg", dest_dir);
// Create a /syslinux.cfg (if none exists) that points to the existing isolinux cfg
fd = fopen(path, "r");
if (fd == NULL) {
fd = fopen(path, "w"); // No "/syslinux.cfg" => create a new one
if (fd == NULL) {
uprintf("Unable to create %s - booting from USB will not work\n", path);
r = 1;
} else {
fprintf(fd, "DEFAULT loadconfig\n\nLABEL loadconfig\n CONFIG %s\n", iso_report.cfg_path);
for (i=safe_strlen(iso_report.cfg_path); (i>0)&&(iso_report.cfg_path[i]!='/'); i--);
if (i>0) {
iso_report.cfg_path[i] = 0;
fprintf(fd, " APPEND %s/\n", iso_report.cfg_path);
iso_report.cfg_path[i] = '/';
}
uprintf("Created: %s\n", path);
}
}
if (fd != NULL)
fclose(fd);
}
SendMessage(hISOProgressDlg, UM_ISO_EXIT, 0, 0);
if (p_iso != NULL)
iso9660_close(p_iso);
if (p_udf != NULL)
udf_close(p_udf);
if ((r != 0) && (FormatStatus == 0))
FormatStatus = ERROR_SEVERITY_ERROR|FAC(FACILITY_STORAGE)|APPERR((scan_only?ERROR_ISO_SCAN:ERROR_ISO_EXTRACT));
return (r == 0);
}
