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iso.c
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/*
* Rufus: The Reliable USB Formatting Utility
* ISO file extraction
* Copyright © 2011-2024 Pete Batard <[email protected]>
* Based on libcdio's iso & udf samples:
* Copyright © 2003-2014 Rocky Bernstein <[email protected]>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* Memory leaks detection - define _CRTDBG_MAP_ALLOC as preprocessor macro */
#ifdef _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>
#endif
#include <windows.h>
#include <stdio.h>
#include <string.h>
#include <malloc.h>
#include <errno.h>
#include <direct.h>
#include <ctype.h>
#include <assert.h>
#include <virtdisk.h>
#include <sys/stat.h>
#define DO_NOT_WANT_COMPATIBILITY
#include <cdio/cdio.h>
#include <cdio/logging.h>
#include <cdio/iso9660.h>
#include <cdio/udf.h>
#include "rufus.h"
#include "ui.h"
#include "drive.h"
#include "libfat.h"
#include "missing.h"
#include "resource.h"
#include "msapi_utf8.h"
#include "localization.h"
#include "bled/bled.h"
// How often should we update the progress bar, as updating the
// progress bar too frequently will bring extraction to a crawl
_Static_assert(256 * KB >= ISO_BLOCKSIZE, "Can't set PROGRESS_THRESHOLD");
#define PROGRESS_THRESHOLD ((256 * KB) / ISO_BLOCKSIZE)
// Needed for UDF symbolic link testing
#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) {}
uint32_t GetInstallWimVersion(const char* iso);
typedef struct {
BOOLEAN is_cfg;
BOOLEAN is_conf;
BOOLEAN is_syslinux_cfg;
BOOLEAN is_grub_cfg;
BOOLEAN is_menu_cfg;
BOOLEAN is_old_c32[NB_OLD_C32];
} EXTRACT_PROPS;
RUFUS_IMG_REPORT img_report;
int64_t iso_blocking_status = -1;
extern uint64_t md5sum_totalbytes;
extern BOOL preserve_timestamps, enable_ntfs_compression, validate_md5sum;
extern HANDLE format_thread;
extern StrArray modified_files;
BOOL enable_iso = TRUE, enable_joliet = TRUE, enable_rockridge = TRUE, has_ldlinux_c32;
#define ISO_BLOCKING(x) do {x; iso_blocking_status++; } while(0)
static const char* psz_extract_dir;
static const char* bootmgr_name = "bootmgr";
const char* bootmgr_efi_name = "bootmgr.efi";
static const char* grldr_name = "grldr";
static const char* ldlinux_name = "ldlinux.sys";
static const char* ldlinux_c32 = "ldlinux.c32";
const char* md5sum_name[2] = { "md5sum.txt", "MD5SUMS" };
static const char* casper_dirname = "/casper";
static const char* proxmox_dirname = "/proxmox";
const char* efi_dirname = "/efi/boot";
const char* efi_bootname[3] = { "boot", "grub", "mm" };
const char* efi_archname[ARCH_MAX] = { "", "ia32", "x64", "arm", "aa64", "ia64", "riscv64", "loongarch64", "ebc" };
static const char* sources_str = "/sources";
static const char* wininst_name[] = { "install.wim", "install.esd", "install.swm" };
// We only support GRUB/BIOS (x86) that uses a standard config dir (/boot/grub/i386-pc/)
// If the disc was mastered properly, GRUB/EFI will take care of itself
static const char* grub_dirname[] = { "/boot/grub/i386-pc", "/boot/grub2/i386-pc" };
static const char* grub_cfg[] = { "grub.cfg", "loopback.cfg" };
static const char* menu_cfg = "menu.cfg";
// NB: Do not alter the order of the array below without validating hardcoded indexes in check_iso_props
static const char* syslinux_cfg[] = { "isolinux.cfg", "syslinux.cfg", "extlinux.conf", "txt.cfg", "live.cfg" };
static const char* isolinux_bin[] = { "isolinux.bin", "boot.bin" };
static const char* pe_dirname[] = { "/i386", "/amd64", "/minint" };
static const char* pe_file[] = { "ntdetect.com", "setupldr.bin", "txtsetup.sif" };
static const char* reactos_name[] = { "setupldr.sys", "freeldr.sys" };
static const char* kolibri_name = "kolibri.img";
static const char* autorun_name = "autorun.inf";
static const char* manjaro_marker = ".miso";
static const char* pop_os_name = "pop-os";
static const char* stupid_antivirus = " NOTE: This is usually caused by a poorly designed security solution. "
"See https://bit.ly/40qDtyF.\r\n This file will be skipped for now, but you should really "
"look into using a *SMARTER* antivirus solution.";
const char* old_c32_name[NB_OLD_C32] = OLD_C32_NAMES;
static const int64_t old_c32_threshold[NB_OLD_C32] = OLD_C32_THRESHOLD;
static uint8_t joliet_level = 0;
static uint32_t md5sum_size = 0;
static uint64_t total_blocks, extra_blocks, nb_blocks, last_nb_blocks;
static BOOL scan_only = FALSE;
static FILE* fd_md5sum = NULL;
static StrArray config_path, isolinux_path;
static char symlinked_syslinux[MAX_PATH], *md5sum_data = NULL, *md5sum_pos = NULL;
// Ensure filenames do not contain invalid FAT32 or NTFS characters
static __inline char* sanitize_filename(char* filename, BOOL* is_identical)
{
size_t i, j;
char* ret = NULL;
char unauthorized[] = { '*', '?', '<', '>', ':', '|' };
*is_identical = TRUE;
ret = safe_strdup(filename);
if (ret == NULL) {
uprintf("Could not allocate string for sanitized path");
return NULL;
}
// Must start after the drive part (D:\...) so that we don't eliminate the first column
for (i = 2; i<safe_strlen(ret); i++) {
for (j = 0; j<sizeof(unauthorized); j++) {
if (ret[i] == unauthorized[j]) {
ret[i] = '_';
*is_identical = FALSE;
}
}
}
return ret;
}
static void log_handler (cdio_log_level_t level, const char *message)
{
uprintf("libcdio: %s", message);
}
/*
* Scan and set ISO properties
* Returns true if the the current file does not need to be processed further
*/
static BOOL check_iso_props(const char* psz_dirname, int64_t file_length, const char* psz_basename,
const char* psz_fullpath, EXTRACT_PROPS *props)
{
size_t i, j, k, len;
char bootloader_name[32];
// Check for an isolinux/syslinux config file anywhere
memset(props, 0, sizeof(EXTRACT_PROPS));
for (i = 0; i < ARRAYSIZE(syslinux_cfg); i++) {
if (safe_stricmp(psz_basename, syslinux_cfg[i]) == 0) {
props->is_cfg = TRUE; // Required for "extlinux.conf"
props->is_syslinux_cfg = TRUE;
// Maintain a list of all the isolinux/syslinux config files identified so far
if ((scan_only) && (i < 3))
StrArrayAdd(&config_path, psz_fullpath, TRUE);
if ((scan_only) && (i == 1) && (safe_stricmp(psz_dirname, efi_dirname) == 0))
img_report.has_efi_syslinux = TRUE;
}
}
// Check for archiso loader/entries/*.conf files
if (safe_stricmp(psz_dirname, "/loader/entries") == 0) {
len = safe_strlen(psz_basename);
props->is_conf = ((len > 4) && (stricmp(&psz_basename[len - 5], ".conf") == 0));
}
// Check for an old incompatible c32 file anywhere
for (i = 0; i < NB_OLD_C32; i++) {
if ((safe_stricmp(psz_basename, old_c32_name[i]) == 0) && (file_length <= old_c32_threshold[i]))
props->is_old_c32[i] = TRUE;
}
if (!scan_only) { // Write-time checks
// Check for config files that may need patching
len = safe_strlen(psz_basename);
if ((len >= 4) && safe_stricmp(&psz_basename[len - 4], ".cfg") == 0) {
props->is_cfg = TRUE;
for (i = 0; i < ARRAYSIZE(grub_cfg); i++) {
if (safe_stricmp(psz_basename, grub_cfg[i]) == 0)
props->is_grub_cfg = TRUE;
}
if (safe_stricmp(psz_basename, menu_cfg) == 0) {
props->is_menu_cfg = TRUE;
}
}
// In case there's an ldlinux.sys on the ISO, prevent it from overwriting ours
if ((psz_dirname != NULL) && (psz_dirname[0] == 0) && (safe_stricmp(psz_basename, ldlinux_name) == 0)) {
uprintf("Skipping '%s' file from ISO image", psz_basename);
return TRUE;
}
} else { // Scan-time checks
// Check for GRUB artifacts
for (i = 0; i < ARRAYSIZE(grub_dirname); i++) {
if (safe_stricmp(psz_dirname, grub_dirname[i]) == 0)
img_report.has_grub2 = (uint8_t)i + 1;
}
// Check for a syslinux v5.0+ file anywhere
if (safe_stricmp(psz_basename, ldlinux_c32) == 0) {
has_ldlinux_c32 = TRUE;
}
// Check for a '/casper#####' directory (non-empty)
if (safe_strnicmp(psz_dirname, casper_dirname, strlen(casper_dirname)) == 0) {
img_report.uses_casper = TRUE;
if (safe_strstr(psz_dirname, pop_os_name) != NULL)
img_report.disable_iso = TRUE;
}
// Check for a '/proxmox' directory
if (safe_stricmp(psz_dirname, proxmox_dirname) == 0) {
img_report.disable_iso = TRUE;
}
// Check for various files and directories in root (psz_dirname = "")
if ((psz_dirname != NULL) && (psz_dirname[0] == 0)) {
if (safe_stricmp(psz_basename, bootmgr_name) == 0) {
img_report.has_bootmgr = TRUE;
}
if (safe_stricmp(psz_basename, bootmgr_efi_name) == 0) {
// We may extract the bootloaders for revocation validation later but
// to do so, since we're working with case sensitive file systems, we
// must store all found UEFI bootloader paths with the right case.
for (j = 0; j < ARRAYSIZE(img_report.efi_boot_entry); j++) {
if (img_report.efi_boot_entry[j].path[0] == 0) {
img_report.efi_boot_entry[j].type = EBT_BOOTMGR;
static_strcpy(img_report.efi_boot_entry[j].path, psz_fullpath);
break;
}
}
img_report.has_efi |= 1;
img_report.has_bootmgr_efi = TRUE;
}
if (safe_stricmp(psz_basename, grldr_name) == 0) {
img_report.has_grub4dos = TRUE;
}
if (safe_stricmp(psz_basename, kolibri_name) == 0) {
img_report.has_kolibrios = TRUE;
}
if (safe_stricmp(psz_basename, manjaro_marker) == 0) {
img_report.disable_iso = TRUE;
}
for (i = 0; i < ARRAYSIZE(md5sum_name); i++) {
if (safe_stricmp(psz_basename, md5sum_name[i]) == 0)
img_report.has_md5sum = (uint8_t)(i + 1);
}
}
// Check for ReactOS presence anywhere
if (img_report.reactos_path[0] == 0) {
for (i = 0; i < ARRAYSIZE(reactos_name); i++)
if (safe_stricmp(psz_basename, reactos_name[i]) == 0)
static_strcpy(img_report.reactos_path, psz_fullpath);
}
// Check for the first 'efi*.img' we can find (that hopefully contains EFI boot files)
if (!HAS_EFI_IMG(img_report) && (safe_strlen(psz_basename) >= 7) &&
(safe_strnicmp(psz_basename, "efi", 3) == 0) &&
(safe_stricmp(&psz_basename[strlen(psz_basename) - 4], ".img") == 0))
static_strcpy(img_report.efi_img_path, psz_fullpath);
// Check for the EFI boot entries
if (safe_stricmp(psz_dirname, efi_dirname) == 0) {
for (k = 0; k < ARRAYSIZE(efi_bootname); k++) {
for (i = 0; i < ARRAYSIZE(efi_archname); i++) {
static_sprintf(bootloader_name, "%s%s.efi", efi_bootname[k], efi_archname[i]);
if (safe_stricmp(psz_basename, bootloader_name) == 0) {
if (k == 0)
img_report.has_efi |= (2 << i); // start at 2 since "bootmgr.efi" is bit 0
for (j = 0; j < ARRAYSIZE(img_report.efi_boot_entry); j++) {
if (img_report.efi_boot_entry[j].path[0] == 0) {
img_report.efi_boot_entry[j].type = (uint8_t)k;
static_strcpy(img_report.efi_boot_entry[j].path, psz_fullpath);
break;
}
}
}
}
}
// Linux Mint Edge 21.2/Mint 21.3 have an invalid /EFI/boot/bootx64.efi
// because it's a symbolic link to a file that does not exist on the media.
// This is originally due to a Debian bug that was fixed in:
// https://salsa.debian.org/live-team/live-build/-/commit/5bff71fea2dd54adcd6c428d3f1981734079a2f7
// Because of this, if we detect a small bootx64.efi file, we assert that it's a
// broken link and try to extract a "good" version from the El-Torito image.
if ((safe_stricmp(psz_basename, "bootx64.efi") == 0) && (file_length < 256)) {
img_report.has_efi |= 0x4000;
static_strcpy(img_report.efi_img_path, "[BOOT]/1-Boot-NoEmul.img");
}
}
if (psz_dirname != NULL) {
if (safe_stricmp(&psz_dirname[max(0, ((int)safe_strlen(psz_dirname)) -
((int)strlen(sources_str)))], sources_str) == 0) {
// Check for "install.###" in "###/sources/"
for (i = 0; i < ARRAYSIZE(wininst_name); i++) {
if (safe_stricmp(psz_basename, wininst_name[i]) == 0) {
if (img_report.wininst_index < MAX_WININST) {
static_sprintf(img_report.wininst_path[img_report.wininst_index],
"?:%s", psz_fullpath);
img_report.wininst_index++;
}
}
}
}
}
// Check for "\sources\\$OEM$\\$$\\Panther\\unattend.xml"
if ((safe_stricmp(psz_dirname, "/sources/$OEM$/$$/Panther") == 0) &&
(safe_stricmp(psz_basename, "unattend.xml") == 0))
img_report.has_panther_unattend = TRUE;
// Check for PE (XP) specific files in "/i386", "/amd64" or "/minint"
for (i = 0; i < ARRAYSIZE(pe_dirname); i++)
if (safe_stricmp(psz_dirname, pe_dirname[i]) == 0)
for (j=0; j<ARRAYSIZE(pe_file); j++)
if (safe_stricmp(psz_basename, pe_file[j]) == 0)
img_report.winpe |= (1<<j)<<(ARRAYSIZE(pe_dirname)*i);
for (i = 0; i < ARRAYSIZE(isolinux_bin); i++) {
if (safe_stricmp(psz_basename, isolinux_bin[i]) == 0) {
// Maintain a list of all the isolinux.bin files found
StrArrayAdd(&isolinux_path, psz_fullpath, TRUE);
}
}
for (i = 0; i < NB_OLD_C32; i++) {
if (props->is_old_c32[i])
img_report.has_old_c32[i] = TRUE;
}
if (file_length >= 4 * GB)
img_report.has_4GB_file = TRUE;
// Compute projected size needed (NB: ISO_BLOCKSIZE = UDF_BLOCKSIZE)
if (file_length != 0)
total_blocks += (file_length + (ISO_BLOCKSIZE - 1)) / ISO_BLOCKSIZE;
return TRUE;
}
return FALSE;
}
// Apply various workarounds to Linux config files
static void fix_config(const char* psz_fullpath, const char* psz_path, const char* psz_basename, EXTRACT_PROPS* props)
{
BOOL modified = FALSE, patched;
size_t nul_pos;
char *iso_label = NULL, *usb_label = NULL, *src, *dst;
src = safe_strdup(psz_fullpath);
if (src == NULL)
return;
nul_pos = strlen(src);
to_windows_path(src);
// Add persistence to the kernel options
if ((boot_type == BT_IMAGE) && HAS_PERSISTENCE(img_report) && persistence_size) {
if ((props->is_grub_cfg) || (props->is_menu_cfg) || (props->is_syslinux_cfg)) {
if (replace_in_token_data(src, props->is_grub_cfg ? "linux" : "append",
"file=/cdrom/preseed", "persistent file=/cdrom/preseed", TRUE) != NULL) {
// Ubuntu & derivatives are assumed to use 'file=/cdrom/preseed/...'
// or 'layerfs-path=minimal.standard.live.squashfs' (see below)
// somewhere in their kernel options and use 'persistent' as keyword.
uprintf(" Added 'persistent' kernel option");
modified = TRUE;
// Also remove Ubuntu's "maybe-ubiquity" to avoid splash screen (GRUB only)
if ((props->is_grub_cfg) && replace_in_token_data(src, "linux",
"maybe-ubiquity", "", TRUE))
uprintf(" Removed 'maybe-ubiquity' kernel option");
} else if (replace_in_token_data(src, "linux", "/casper/vmlinuz",
"/casper/vmlinuz persistent", TRUE) != NULL) {
// Ubuntu 23.04 and 24.04 use GRUB only with the above and don't use "maybe-ubiquity"
uprintf(" Added 'persistent' kernel option");
modified = TRUE;
} else if (replace_in_token_data(src, props->is_grub_cfg ? "linux" : "append",
"boot=casper", "boot=casper persistent", TRUE) != NULL) {
// Linux Mint uses boot=casper.
uprintf(" Added 'persistent' kernel option");
modified = TRUE;
} else if (replace_in_token_data(src, props->is_grub_cfg ? "linux" : "append",
"boot=live", "boot=live persistence", TRUE) != NULL) {
// Debian & derivatives are assumed to use 'boot=live' in
// their kernel options and use 'persistence' as keyword.
uprintf(" Added 'persistence' kernel option");
modified = TRUE;
}
// Other distros can go to hell. Seriously, just check all partitions for
// an ext volume with the right label and use persistence *THEN*. I mean,
// why on earth do you need a bloody *NONSTANDARD* kernel option and/or a
// "persistence.conf" file. This is SO INCREDIBLY RETARDED that it makes
// Windows look smart in comparison. Great job there, Linux people!
}
}
// Workaround for config files requiring an ISO label for kernel append that may be
// different from our USB label. Oh, and these labels must have spaces converted to \x20.
if ((props->is_cfg) || (props->is_conf)) {
// Older versions of GRUB EFI used "linuxefi", newer just use "linux".
// Also, in their great wisdom, the openSUSE maintainers added a 'set linux=linux'
// line to their grub.cfg, which means that their kernel option cfg_token is no longer
//'linux' but '$linux'... and we have to add a workaround for that.
// Then, newer Arch and derivatives added an extra "search --label ..." command
// in their GRUB conf, which we need to cater for in supplement of the kernel line.
// Then Artix called in and decided they would use a "for kopt ..." loop.
// Finally, we're just shoving the known isolinux/syslinux tokens in there to process
// all config files equally.
static const char* cfg_token[] = { "options", "append", "linux", "linuxefi", "$linux", "search", "for"};
iso_label = replace_char(img_report.label, ' ', "\\x20");
usb_label = replace_char(img_report.usb_label, ' ', "\\x20");
if ((iso_label != NULL) && (usb_label != NULL)) {
patched = FALSE;
for (int i = 0; i < ARRAYSIZE(cfg_token); i++) {
if (replace_in_token_data(src, cfg_token[i], iso_label, usb_label, TRUE) != NULL) {
modified = TRUE;
patched = TRUE;
}
}
if (patched)
uprintf(" Patched %s: '%s' ➔ '%s'", src, iso_label, usb_label);
// Since version 8.2, and https://github.com/rhinstaller/anaconda/commit/a7661019546ec1d8b0935f9cb0f151015f2e1d95,
// Red Hat derivatives have changed their CD-ROM detection policy which leads to the installation source
// not being found. So we need to use 'inst.repo' instead of 'inst.stage2' in the kernel options.
// *EXCEPT* this should not be done for netinst media such as Fedora 37 netinstall and trying to differentiate
// netinst from regular is a pain. So, because I don't have all day to fix the mess that Red-Hat created when
// they introduced a kernel option to decide where the source packages should be picked from we're just going
// to *hope* that users didn't rename their ISOs and check whether it contains 'netinst' or not. Oh well...
patched = FALSE;
if (img_report.rh8_derivative && (strstr(image_path, "netinst") == NULL)) {
for (int i = 0; i < ARRAYSIZE(cfg_token); i++) {
if (replace_in_token_data(src, cfg_token[i], "inst.stage2", "inst.repo", TRUE) != NULL) {
modified = TRUE;
patched = TRUE;
}
}
if (patched)
uprintf(" Patched %s: '%s' ➔ '%s'", src, "inst.stage2", "inst.repo");
}
}
safe_free(iso_label);
safe_free(usb_label);
}
// Fix dual BIOS + EFI support for tails and other ISOs
if ( (props->is_syslinux_cfg) && (safe_stricmp(psz_path, efi_dirname) == 0) &&
(safe_stricmp(psz_basename, syslinux_cfg[0]) == 0) &&
(!img_report.has_efi_syslinux) && (dst = safe_strdup(src)) ) {
dst[nul_pos-12] = 's'; dst[nul_pos-11] = 'y'; dst[nul_pos-10] = 's';
CopyFileA(src, dst, TRUE);
uprintf("Duplicated %s to %s", src, dst);
free(dst);
}
// Workaround for FreeNAS
if (props->is_grub_cfg) {
iso_label = malloc(MAX_PATH);
usb_label = malloc(MAX_PATH);
if ((iso_label != NULL) && (usb_label != NULL)) {
safe_sprintf(iso_label, MAX_PATH, "cd9660:/dev/iso9660/%s", img_report.label);
safe_sprintf(usb_label, MAX_PATH, "msdosfs:/dev/msdosfs/%s", img_report.usb_label);
if (replace_in_token_data(src, "set", iso_label, usb_label, TRUE) != NULL) {
uprintf(" Patched %s: '%s' ➔ '%s'", src, iso_label, usb_label);
modified = TRUE;
}
}
safe_free(iso_label);
safe_free(usb_label);
}
if (modified)
StrArrayAdd(&modified_files, psz_fullpath, TRUE);
free(src);
}
// Returns TRUE if a path appears in md5sum.txt
static BOOL is_in_md5sum(char* path)
{
BOOL found = FALSE;
char c[3], *p, *pos = md5sum_pos, *nul_pos;
// If we are creating the md5sum file from scratch, every file is in it.
if (fd_md5sum != NULL)
return TRUE;
// If we don't have an existing file at this stage, then no file is in it.
if (md5sum_size == 0 || md5sum_data == NULL)
return FALSE;
// We should have a "X:/xyz" path
assert(path[1] == ':' && path[2] == '/');
// Modify the path to have " ./xyz"
c[0] = path[0];
c[1] = path[1];
path[0] = ' ';
path[1] = '.';
// Search for the string in the remainder of the md5sum.txt
// NB: md5sum_data is always NUL terminated.
p = strstr(pos, path);
// Cater for the case where we matched a partial string and look for the full one
while (p != NULL && p[strlen(path)] != '\n' && p[strlen(path)] != '\r' && p[strlen(path)] != '\0') {
pos = p + strlen(path);
p = strstr(pos, path);
}
found = (p != NULL);
// If not found in remainder and we have a remainder, loop to search from beginning
if (!found && pos != md5sum_data) {
nul_pos = pos;
c[2] = *nul_pos;
*nul_pos = 0;
p = strstr(md5sum_data, path);
while (p != NULL && p[strlen(path)] != '\n' && p[strlen(path)] != '\r' && p[strlen(path)] != '\0') {
pos = p + strlen(path);
p = strstr(pos, path);
}
*nul_pos = c[2];
found = (p != NULL);
}
path[0] = c[0];
path[1] = c[1];
if (found)
md5sum_pos = p + strlen(path);
return found;
}
static void print_extracted_file(char* psz_fullpath, uint64_t file_length)
{
size_t nul_pos;
if (psz_fullpath == NULL)
return;
// Replace slashes with backslashes and append the size to the path for UI display
to_windows_path(psz_fullpath);
nul_pos = strlen(psz_fullpath);
safe_sprintf(&psz_fullpath[nul_pos], 24, " (%s)", SizeToHumanReadable(file_length, TRUE, FALSE));
uprintf("Extracting: %s", psz_fullpath);
safe_sprintf(&psz_fullpath[nul_pos], 24, " (%s)", SizeToHumanReadable(file_length, FALSE, FALSE));
PrintStatus(0, MSG_000, psz_fullpath); // MSG_000 is "%s"
// Remove the appended size for extraction
psz_fullpath[nul_pos] = 0;
// ISO9660 cannot handle backslashes
to_unix_path(psz_fullpath);
// Update md5sum_totalbytes as needed
if (is_in_md5sum(psz_fullpath))
md5sum_totalbytes += file_length;
}
// Convert from time_t to FILETIME
// Uses 3 static entries so that we can convert 3 concurrent values at the same time
static LPFILETIME __inline to_filetime(time_t t)
{
static int i = 0;
static FILETIME ft[3], *r;
LONGLONG ll = (t * 10000000LL) + 116444736000000000LL;
r = &ft[i];
r->dwLowDateTime = (DWORD)ll;
r->dwHighDateTime = (DWORD)(ll >> 32);
i = (i + 1) % ARRAYSIZE(ft);
return r;
}
// Helper function to restore the timestamp on a directory
static void __inline set_directory_timestamp(char* path, LPFILETIME creation, LPFILETIME last_access, LPFILETIME modify)
{
HANDLE dir_handle = CreateFileU(path, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if ((dir_handle == INVALID_HANDLE_VALUE) || (!SetFileTime(dir_handle, creation, last_access, modify)))
uprintf(" Could not set timestamp for directory '%s': %s", path, WindowsErrorString());
safe_closehandle(dir_handle);
}
// Returns 0 on success, nonzero on error
static int udf_extract_files(udf_t *p_udf, udf_dirent_t *p_udf_dirent, const char *psz_path)
{
HANDLE file_handle = NULL;
DWORD buf_size, wr_size, err;
EXTRACT_PROPS props;
HASH_CONTEXT ctx;
BOOL r, is_identical;
int length;
size_t i, j, nb;
char tmp[128], *psz_fullpath = NULL, *psz_sanpath = NULL;
const char* psz_basename;
udf_dirent_t *p_udf_dirent2;
_Static_assert(ISO_BUFFER_SIZE % UDF_BLOCKSIZE == 0,
"ISO_BUFFER_SIZE is not a multiple of UDF_BLOCKSIZE");
uint8_t* buf = malloc(ISO_BUFFER_SIZE);
int64_t read, file_length;
if ((p_udf_dirent == NULL) || (psz_path == NULL) || (buf == NULL)) {
safe_free(buf);
return 1;
}
if (psz_path[0] == 0)
UpdateProgressWithInfoInit(NULL, TRUE);
while ((p_udf_dirent = udf_readdir(p_udf_dirent)) != NULL) {
if (ErrorStatus) goto out;
psz_basename = udf_get_filename(p_udf_dirent);
if (strlen(psz_basename) == 0)
continue;
length = (int)(3 + strlen(psz_path) + strlen(psz_basename) + strlen(psz_extract_dir) + 24);
psz_fullpath = (char*)calloc(sizeof(char), length);
if (psz_fullpath == NULL) {
uprintf("Error allocating file name");
goto out;
}
length = _snprintf_s(psz_fullpath, length, _TRUNCATE, "%s%s/%s", psz_extract_dir, psz_path, psz_basename);
if (length < 0)
goto out;
if (S_ISLNK(udf_get_posix_filemode(p_udf_dirent)))
img_report.has_symlinks = SYMLINKS_UDF;
if (udf_is_dir(p_udf_dirent)) {
if (!scan_only) {
psz_sanpath = sanitize_filename(psz_fullpath, &is_identical);
IGNORE_RETVAL(_mkdirU(psz_sanpath));
if (preserve_timestamps) {
set_directory_timestamp(psz_sanpath, to_filetime(udf_get_attribute_time(p_udf_dirent)),
to_filetime(udf_get_access_time(p_udf_dirent)), to_filetime(udf_get_modification_time(p_udf_dirent)));
}
safe_free(psz_sanpath);
}
p_udf_dirent2 = udf_opendir(p_udf_dirent);
if (p_udf_dirent2 != NULL) {
if (udf_extract_files(p_udf, p_udf_dirent2, &psz_fullpath[strlen(psz_extract_dir)]))
goto out;
}
} else {
file_length = udf_get_file_length(p_udf_dirent);
if (check_iso_props(psz_path, file_length, psz_basename, psz_fullpath, &props)) {
safe_free(psz_fullpath);
continue;
}
print_extracted_file(psz_fullpath, file_length);
for (i = 0; i < NB_OLD_C32; i++) {
if (props.is_old_c32[i] && use_own_c32[i]) {
static_sprintf(tmp, "%s/syslinux-%s/%s", FILES_DIR, embedded_sl_version_str[0], old_c32_name[i]);
if (CopyFileU(tmp, psz_fullpath, FALSE)) {
uprintf(" Replaced with local version %s", IsFileInDB(tmp)?"✓":"✗");
break;
}
uprintf(" Could not replace file: %s", WindowsErrorString());
}
}
if (i < NB_OLD_C32)
continue;
psz_sanpath = sanitize_filename(psz_fullpath, &is_identical);
if (!is_identical)
uprintf(" File name sanitized to '%s'", psz_sanpath);
file_handle = CreatePreallocatedFile(psz_sanpath, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, file_length);
if (file_handle == INVALID_HANDLE_VALUE) {
err = GetLastError();
uprintf(" Unable to create file: %s", WindowsErrorString());
if (((err == ERROR_ACCESS_DENIED) || (err == ERROR_INVALID_HANDLE)) &&
(safe_strcmp(&psz_sanpath[3], autorun_name) == 0))
uprintf(stupid_antivirus);
else
goto out;
} else {
if (fd_md5sum != NULL)
hash_init[HASH_MD5](&ctx);
while (file_length > 0) {
if (ErrorStatus)
goto out;
nb = (size_t)MIN(ISO_BUFFER_SIZE / UDF_BLOCKSIZE, (file_length + UDF_BLOCKSIZE - 1) / UDF_BLOCKSIZE);
read = udf_read_block(p_udf_dirent, buf, nb);
if (read < 0) {
uprintf(" Error reading UDF file %s", &psz_fullpath[strlen(psz_extract_dir)]);
goto out;
}
buf_size = (DWORD)MIN(file_length, read);
if (fd_md5sum != NULL)
hash_write[HASH_MD5](&ctx, buf, buf_size);
ISO_BLOCKING(r = WriteFileWithRetry(file_handle, buf, buf_size, &wr_size, WRITE_RETRIES));
if (!r || (wr_size != buf_size)) {
uprintf(" Error writing file: %s", r ? "Short write detected" : WindowsErrorString());
goto out;
}
file_length -= wr_size;
nb_blocks += nb;
if (nb_blocks - last_nb_blocks >= PROGRESS_THRESHOLD) {
UpdateProgressWithInfo(OP_FILE_COPY, MSG_231, nb_blocks, total_blocks);
last_nb_blocks = nb_blocks;
}
}
if (fd_md5sum != NULL) {
hash_final[HASH_MD5](&ctx);
for (j = 0; j < MD5_HASHSIZE; j++)
fprintf(fd_md5sum, "%02x", ctx.buf[j]);
fprintf(fd_md5sum, " ./%s\n", &psz_fullpath[3]);
}
}
if ((preserve_timestamps) && (!SetFileTime(file_handle, to_filetime(udf_get_attribute_time(p_udf_dirent)),
to_filetime(udf_get_access_time(p_udf_dirent)), to_filetime(udf_get_modification_time(p_udf_dirent)))))
uprintf(" Could not set timestamp: %s", WindowsErrorString());
// If you have a fast USB 3.0 device, the default Windows buffering does an
// excellent job at compensating for our small blocks read/writes to max out the
// device's bandwidth.
// The drawback however is with cancellation. With a large file, CloseHandle()
// may take forever to complete and is not interruptible. We try to detect this.
ISO_BLOCKING(safe_closehandle(file_handle));
if (props.is_cfg || props.is_conf)
fix_config(psz_sanpath, psz_path, psz_basename, &props);
safe_free(psz_sanpath);
}
safe_free(psz_fullpath);
}
safe_free(buf);
return 0;
out:
udf_dirent_free(p_udf_dirent);
ISO_BLOCKING(safe_closehandle(file_handle));
safe_free(psz_sanpath);
safe_free(psz_fullpath);
safe_free(buf);
return 1;
}
// Returns 0 on success, >0 on error, <0 to ignore current dir
static int iso_extract_files(iso9660_t* p_iso, const char *psz_path)
{
HANDLE file_handle = NULL;
DWORD buf_size, wr_size, err;
EXTRACT_PROPS props;
HASH_CONTEXT ctx;
BOOL is_symlink, is_identical, create_file, free_p_statbuf = FALSE;
int length, r = 1;
char psz_fullpath[MAX_PATH], *psz_basename = NULL, *psz_sanpath = NULL;
char tmp[128], target_path[256];
const char *psz_iso_name = &psz_fullpath[strlen(psz_extract_dir)];
_Static_assert(ISO_BUFFER_SIZE % ISO_BLOCKSIZE == 0,
"ISO_BUFFER_SIZE is not a multiple of ISO_BLOCKSIZE");
uint8_t* buf = malloc(ISO_BUFFER_SIZE);
CdioListNode_t* p_entnode;
iso9660_stat_t *p_statbuf;
CdioISO9660FileList_t* p_entlist = NULL;
size_t i, j, nb;
lsn_t lsn;
int64_t file_length;
if ((p_iso == NULL) || (psz_path == NULL) || (buf == NULL)) {
safe_free(buf);
return 1;
}
length = _snprintf_s(psz_fullpath, sizeof(psz_fullpath), _TRUNCATE, "%s%s/", psz_extract_dir, psz_path);
if (length < 0)
goto out;
psz_basename = &psz_fullpath[length];
p_entlist = iso9660_ifs_readdir(p_iso, psz_path);
if (!p_entlist) {
uprintf("Could not access directory %s", psz_path);
goto out;
}
if (psz_path[0] == 0)
UpdateProgressWithInfoInit(NULL, TRUE);
_CDIO_LIST_FOREACH(p_entnode, p_entlist) {
if (ErrorStatus) goto out;
p_statbuf = (iso9660_stat_t*) _cdio_list_node_data(p_entnode);
free_p_statbuf = FALSE;
if (scan_only && (p_statbuf->rr.b3_rock == yep) && enable_rockridge) {
if (p_statbuf->rr.u_su_fields & ISO_ROCK_SUF_PL) {
if (!img_report.has_deep_directories)
uprintf(" Note: The selected ISO uses Rock Ridge 'deep directories'.\r\n"
" Because of this, it may take a very long time to scan or extract...");
img_report.has_deep_directories = TRUE;
// Due to the nature of the parsing of Rock Ridge deep directories
// which requires performing a *very costly* search of the whole
// ISO9660 file system to find the matching LSN, ISOs with loads of
// deep directory entries (e.g. OPNsense) are very slow to parse...
// To speed up the scan process, and since we expect deep directory
// entries to appear below anything we care for, we cut things
// short by telling the parent not to bother any further once we
// find that we are dealing with a deep directory.
r = -1;
// Add at least one extra block, since we're skipping content.
total_blocks++;
goto out;
}
}
// Eliminate . and .. entries
if ( (strcmp(p_statbuf->filename, ".") == 0)
|| (strcmp(p_statbuf->filename, "..") == 0) )
continue;
// Rock Ridge requires an exception
is_symlink = FALSE;
if ((p_statbuf->rr.b3_rock == yep) && enable_rockridge) {
safe_strcpy(psz_basename, sizeof(psz_fullpath) - length - 1, p_statbuf->filename);
if (safe_strlen(p_statbuf->filename) > 64)
img_report.has_long_filename = TRUE;
is_symlink = (p_statbuf->rr.psz_symlink != NULL);
if (is_symlink)
img_report.has_symlinks = SYMLINKS_RR;
} else {
iso9660_name_translate_ext(p_statbuf->filename, psz_basename, joliet_level);
}
if (p_statbuf->type == _STAT_DIR) {
if (!scan_only) {
psz_sanpath = sanitize_filename(psz_fullpath, &is_identical);
IGNORE_RETVAL(_mkdirU(psz_sanpath));
if (preserve_timestamps) {
LPFILETIME ft = to_filetime(mktime(&p_statbuf->tm));
set_directory_timestamp(psz_sanpath, ft, ft, ft);
}
safe_free(psz_sanpath);
}
r = iso_extract_files(p_iso, psz_iso_name);
if (r > 0)
goto out;
if (r < 0) // Stop processing current dir
break;
} else {
file_length = p_statbuf->total_size;
if (check_iso_props(psz_path, file_length, psz_basename, psz_fullpath, &props)) {
if (is_symlink && (file_length == 0)) {
// Add symlink duplicated files to total_size at scantime
if ((strcmp(psz_path, "/firmware") == 0)) {
static_sprintf(target_path, "%s/%s", psz_path, p_statbuf->rr.psz_symlink);
iso9660_stat_t* p_statbuf2 = iso9660_ifs_stat_translate(p_iso, target_path);
if (p_statbuf2 != NULL) {
extra_blocks += (p_statbuf2->total_size + ISO_BLOCKSIZE - 1) / ISO_BLOCKSIZE;
iso9660_stat_free(p_statbuf2);
}
} else if ((strcmp(p_statbuf->filename, "live") == 0) &&
(strcmp(p_statbuf->rr.psz_symlink, "casper") == 0)) {
// Mint LMDE requires working symbolic links and therefore requires the use of NTFS
img_report.needs_ntfs = TRUE;
}
}
continue;
}
if (!is_symlink)
print_extracted_file(psz_fullpath, file_length);
for (i = 0; i < NB_OLD_C32; i++) {
if (props.is_old_c32[i] && use_own_c32[i]) {
static_sprintf(tmp, "%s/syslinux-%s/%s", FILES_DIR, embedded_sl_version_str[0], old_c32_name[i]);
if (CopyFileU(tmp, psz_fullpath, FALSE)) {
uprintf(" Replaced with local version %s", IsFileInDB(tmp)?"✓":"✗");
break;
}
uprintf(" Could not replace file: %s", WindowsErrorString());
}
}
if (i < NB_OLD_C32)
continue;
psz_sanpath = sanitize_filename(psz_fullpath, &is_identical);
if (!is_identical)
uprintf(" File name sanitized to '%s'", psz_sanpath);
create_file = TRUE;
if (is_symlink) {
if (fs_type == FS_NTFS) {
// Replicate symlinks if NTFS is being used
static_sprintf(target_path, "%s/%s", psz_path, p_statbuf->rr.psz_symlink);
iso9660_stat_t* p_statbuf2 = iso9660_ifs_stat_translate(p_iso, target_path);
if (p_statbuf2 != NULL) {
to_windows_path(psz_fullpath);
to_windows_path(p_statbuf->rr.psz_symlink);
uprintf("Symlinking: %s%s ➔ %s", psz_fullpath,
(p_statbuf2->type == _STAT_DIR) ? "\\" : "", p_statbuf->rr.psz_symlink);
if (!CreateSymbolicLinkU(psz_fullpath, p_statbuf->rr.psz_symlink,
(p_statbuf2->type == _STAT_DIR) ? SYMBOLIC_LINK_FLAG_DIRECTORY : 0))
uprintf(" Could not create symlink: %s", WindowsErrorString());
to_unix_path(p_statbuf->rr.psz_symlink);
to_unix_path(psz_fullpath);
iso9660_stat_free(p_statbuf2);
create_file = FALSE;
}
} else if (file_length == 0) {
if ((safe_stricmp(p_statbuf->filename, "syslinux") == 0) &&
// Special handling for ISOs that have a syslinux → isolinux symbolic link (e.g. Knoppix)
(safe_stricmp(p_statbuf->rr.psz_symlink, "isolinux") == 0)) {
static_strcpy(symlinked_syslinux, psz_fullpath);
print_extracted_file(psz_fullpath, file_length);
uprintf(" Found Rock Ridge symbolic link to '%s'", p_statbuf->rr.psz_symlink);
} else if (strcmp(psz_path, "/firmware") == 0) {
// Special handling for ISOs that use symlinks for /firmware/ (e.g. Debian non-free)
// TODO: Do we want to do this for all file symlinks?
static_sprintf(target_path, "%s/%s", psz_path, p_statbuf->rr.psz_symlink);
p_statbuf = iso9660_ifs_stat_translate(p_iso, target_path);
if (p_statbuf != NULL) {
// The original p_statbuf will be freed automatically, but not
// the new one so we need to force an explicit free.
free_p_statbuf = TRUE;
file_length = p_statbuf->total_size;
print_extracted_file(psz_fullpath, file_length);
uprintf(" Duplicated from '%s'", target_path);
} else {
uprintf("Could not resolve Rock Ridge Symlink - ABORTING!");
goto out;
}
} else {
print_extracted_file(psz_fullpath, safe_strlen(p_statbuf->rr.psz_symlink));
uprintf(" Ignoring Rock Ridge symbolic link to '%s'", p_statbuf->rr.psz_symlink);
}
} else {
uuprintf("Unexpected symlink length: %d", file_length);
create_file = FALSE;
}
}
if (create_file) {
file_handle = CreatePreallocatedFile(psz_sanpath, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, file_length);
if (file_handle == INVALID_HANDLE_VALUE) {
err = GetLastError();
uprintf(" Unable to create file: %s", WindowsErrorString());
if (((err == ERROR_ACCESS_DENIED) || (err == ERROR_INVALID_HANDLE)) &&
(safe_strcmp(&psz_sanpath[3], autorun_name) == 0))
uprintf(stupid_antivirus);
else
goto out;
} else if (is_symlink) {
// Create a text file that contains the target link
ISO_BLOCKING(r = WriteFileWithRetry(file_handle, p_statbuf->rr.psz_symlink,
(DWORD)safe_strlen(p_statbuf->rr.psz_symlink), &wr_size, WRITE_RETRIES));
if (!r) {
uprintf(" Error writing file: %s", WindowsErrorString());
goto out;
}
} else {
if (fd_md5sum != NULL)
hash_init[HASH_MD5](&ctx);
for (i = 0; file_length > 0; i += nb) {
if (ErrorStatus)
goto out;
lsn = p_statbuf->lsn + (lsn_t)i;
nb = (size_t)MIN(ISO_BUFFER_SIZE / ISO_BLOCKSIZE, (file_length + ISO_BLOCKSIZE - 1) / ISO_BLOCKSIZE);
if (iso9660_iso_seek_read(p_iso, buf, lsn, (long)nb) != (nb * ISO_BLOCKSIZE)) {
uprintf(" Error reading ISO9660 file %s at LSN %lu",
psz_iso_name, (long unsigned int)lsn);
goto out;
}
buf_size = (DWORD)MIN(file_length, ISO_BUFFER_SIZE);
if (fd_md5sum != NULL)
hash_write[HASH_MD5](&ctx, buf, buf_size);
ISO_BLOCKING(r = WriteFileWithRetry(file_handle, buf, buf_size, &wr_size, WRITE_RETRIES));
if (!r || wr_size != buf_size) {
uprintf(" Error writing file: %s", r ? "Short write detected" : WindowsErrorString());
goto out;
}
file_length -= wr_size;
nb_blocks += nb;
if (nb_blocks - last_nb_blocks >= PROGRESS_THRESHOLD) {
UpdateProgressWithInfo(OP_FILE_COPY, MSG_231, nb_blocks, total_blocks +
((fs_type != FS_NTFS) ? extra_blocks : 0));
last_nb_blocks = nb_blocks;
}
}
if (fd_md5sum != NULL) {
hash_final[HASH_MD5](&ctx);
for (j = 0; j < MD5_HASHSIZE; j++)
fprintf(fd_md5sum, "%02x", ctx.buf[j]);
fprintf(fd_md5sum, " ./%s\n", &psz_fullpath[3]);
}
}
if (preserve_timestamps) {
LPFILETIME ft = to_filetime(mktime(&p_statbuf->tm));
if (!SetFileTime(file_handle, ft, ft, ft))
uprintf(" Could not set timestamp: %s", WindowsErrorString());
}
}
if (free_p_statbuf)
iso9660_stat_free(p_statbuf);
ISO_BLOCKING(safe_closehandle(file_handle));
if (props.is_cfg || props.is_conf)
fix_config(psz_sanpath, psz_path, psz_basename, &props);
safe_free(psz_sanpath);