nerd/rufus
1
1
Fork 0
mirror of https://github.com/pbatard/rufus.git synced 2024-08-14 23:57:05 +00:00
Code Issues 1 Projects Releases Wiki Activity
rufus/src/iso.c
Pete Batard f813eb05d8
[iso] fix a buffer overflow in syslinux.c 
* p[safe_strlen(p)] = 0; was pointless and could lead to a buffer overflow if
  the string was not already NUL terminated, so remove it and make sure we
  process a buffer that either contains legitimate Syslinux version strings
  (that are NUL terminated always) or that has been read through read_file()
  (that always adds a NUL terminator to the buffer).
* Also fix some whitespaces in related code sections and switch to using
  read_file() for GRUB version lookup.
* Vulnerability discovered and reported by Mansour Gashasbi (@gashasbi).
2024-04-10 10:26:31 +02:00

2086 lines
78 KiB
C
Raw Blame History

/*
* Rufus: The Reliable USB Formatting Utility
* ISO file extraction
* Copyright © 2011-2024 Pete Batard <pete@akeo.ie>
* Based on libcdio's iso & udf samples:
* Copyright © 2003-2014 Rocky Bernstein <rocky@gnu.org>
*
* 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[ARCH_MAX] = {
"boot.efi", "bootia32.efi", "bootx64.efi", "bootarm.efi", "bootaa64.efi", "bootia64.efi",
"bootriscv32.efi", "bootriscv64.efi", "bootriscv128.efi", "bootebc.efi" };
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"; // TODO: freeldr.sys doesn't seem to work
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, len;
// 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_path); j++) {
if (img_report.efi_boot_path[j][0] == 0) {
static_strcpy(img_report.efi_boot_path[j], 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' setupldr.sys anywhere
if ((img_report.reactos_path[0] == 0) && (safe_stricmp(psz_basename, reactos_name) == 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 (i = 0; i < ARRAYSIZE(efi_bootname); i++) {
if (safe_stricmp(psz_basename, efi_bootname[i]) == 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_path); j++) {
if (img_report.efi_boot_path[j][0] == 0) {
static_strcpy(img_report.efi_boot_path[j], 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, efi_bootname[2]) == 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 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", "layerfs-path=minimal.standard.live.squashfs",
"persistent layerfs-path=minimal.standard.live.squashfs", TRUE) != NULL) {
// Ubuntu 23.04 uses GRUB only with the above and does not 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;
// 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(md5sum_pos, path);
found = (p != NULL);
// If not found in remainder and we have a remainder, loop to search from beginning
if (!found && md5sum_pos != md5sum_data) {
c[2] = *md5sum_pos;
*md5sum_pos = 0;
p = strstr(md5sum_data, path);
*md5sum_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(psz_fullpath, length, "%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(psz_fullpath, sizeof(psz_fullpath), "%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);
}
}
r = 0;
out:
ISO_BLOCKING(safe_closehandle(file_handle));
if (p_entlist != NULL)
iso9660_filelist_free(p_entlist);
safe_free(psz_sanpath);
safe_free(buf);
return r;
}
void GetGrubVersion(char* buf, size_t buf_size)
{
// In typical "I'll make my own Open Source... with blackjack and hookers!" fashion,
// IBM/Red-Hat/Fedora took it upon themselves to "fix" the double space typo from the
// GRUB version string. But of course, just like their introduction of GRUB calls like
// 'grub_debug_is_enabled', they didn't want to bother upstreaming their changes...
// On the other hand, boy do they want to leech of FSF/GNU developed software, while
// not having it mention GNU anywhere. See:
// https://src.fedoraproject.org/rpms/grub2/blob/rawhide/f/0024-Don-t-say-GNU-Linux-in-generated-menus.patch
const char* grub_version_str[] = { "GRUB version %s", "GRUB version %s" };
const char* grub_debug_is_enabled_str = "grub_debug_is_enabled";
const size_t max_string_size = 32; // The strings above *MUST* be no longer than this value
size_t i, j;
BOOL has_grub_debug_is_enabled = FALSE;
// Make sure we don't overflow our buffer
if (buf_size > max_string_size) {
for (i = 0; i < buf_size - max_string_size; i++) {
for (j = 0; j < ARRAYSIZE(grub_version_str); j++) {
if (memcmp(&buf[i], grub_version_str[j], strlen(grub_version_str[j]) + 1) == 0)
static_strcpy(img_report.grub2_version, &buf[i + strlen(grub_version_str[j]) + 1]);
}
if (memcmp(&buf[i], grub_debug_is_enabled_str, strlen(grub_debug_is_enabled_str)) == 0)
has_grub_debug_is_enabled = TRUE;
}
}
uprintf(" Reported Grub version: %s", img_report.grub2_version);
// <Shakes fist angrily> "KASPERSKYYYYYY!!!..." (https://github.com/pbatard/rufus/issues/467)
// But seriously, these guys should know better than "security" through obscurity...
if (img_report.grub2_version[0] == '0')
img_report.grub2_version[0] = 0;
// For some obscure reason, openSUSE have decided that their Live images should
// use /boot/grub2/ as their prefix directory instead of the standard /boot/grub/
// This creates a MAJOR issue because the prefix directory is hardcoded in
// 'core.img', and Rufus must install a 'core.img', that is not provided by the
// ISO, for the USB to boot (since even trying to pick the one from ISOHybrid
// does usually not guarantees the presence of the FAT driver which is mandatory
// for ISO boot).
// Therefore, when *someone* uses a nonstandard GRUB prefix directory, our base
// 'core.img' can't work with their image, since it isn't able to load modules
// like 'normal.mod', that are required to access the configuration files. Oh and
// you can forget about direct editing the prefix string inside 'core.img' since
// GRUB are forcing LZMA compression for BIOS payloads. And it gets even better,
// because even if you're trying to be smart and use GRUB's earlyconfig features
// to do something like:
// if [ -e /boot/grub2/i386-pc/normal.mod ]; then set prefix = ...
// you still must embed 'configfile.mod' and 'normal.mod' in 'core.img' in order
// to do that, which ends up tripling the file size...
// Also, as mentioned above, Fedora, Ubuntu and others have started applying
// *BREAKING* patches willy-nilly, without bothering to alter the GRUB version
// string. And it gets worse with 2.06 since there are patches we can't detect
// that will produce "452: out of range pointer" whether they are applied OR NOT
// (meaning that if you use a patched GRUB 2.06 with unpatched GRUB 2.06 modules
// you will get the error, and if you use unpatched with patched modules, you
// will also get the error).
// Soooo, since the universe, and project maintainers who do not REALISE that
// NOT RELEASING IN A TIMELY MANNER *DOES* HAVE VERY NEGATIVE CONSEQUENCES FOR
// END USERS, are conspiring against us, and since we already have a facility
// for it, we'll use it to dowload the relevant 'core.img' by appending a missing
// version suffix as needed. Especially, if GRUB only identifies itself as '2.06'
// we'll append a sanitized version of the ISO label to try to differentiate
// between GRUB 2.06 incompatible versions...
if (img_report.grub2_version[0] != 0) {
// Make sure we append '-nonstandard' and '-gdie' before the sanitized label.
BOOL append_label = (safe_strcmp(img_report.grub2_version, "2.06") == 0);
// Must be in the same order as we have on the server
if (img_report.has_grub2 > 1)
safe_strcat(img_report.grub2_version, sizeof(img_report.grub2_version), "-nonstandard");
if (has_grub_debug_is_enabled)
safe_strcat(img_report.grub2_version, sizeof(img_report.grub2_version), "-gdie");
if (append_label) {
safe_strcat(img_report.grub2_version, sizeof(img_report.grub2_version), "-");
safe_strcat(img_report.grub2_version, sizeof(img_report.grub2_version), img_report.label);
}
sanitize_label(img_report.grub2_version);
}
}
BOOL ExtractISO(const char* src_iso, const char* dest_dir, BOOL scan)
{
const char* basedir[] = { "i386", "amd64", "minint" };
const char* tmp_sif = ".\\txtsetup.sif~";
int k, r = 1;
char* tmp, * buf, * ext, * spacing = " ";
char path[MAX_PATH], path2[16];
uint16_t sl_version;
size_t i, j, size, sl_index = 0;
FILE* fd;
iso9660_t* p_iso = NULL;
iso9660_pvd_t pvd;
udf_t* p_udf = NULL;
udf_dirent_t* p_udf_root;
iso_extension_mask_t iso_extension_mask = ISO_EXTENSION_ALL;
if ((!enable_iso) || (src_iso == NULL) || (dest_dir == NULL))
return FALSE;
scan_only = scan;
if (!scan_only)
spacing = "";
cdio_log_set_handler(log_handler);
psz_extract_dir = dest_dir;
// Change progress style to marquee for scanning
if (scan_only) {
uprintf("ISO analysis:");
SendMessage(hMainDialog, UM_PROGRESS_INIT, PBS_MARQUEE, 0);
total_blocks = 0;
extra_blocks = 0;
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...");
IGNORE_RETVAL(_chdirU(app_data_dir));
if (total_blocks == 0) {
uprintf("Error: ISO has not been properly scanned.");
ErrorStatus = RUFUS_ERROR(APPERR(ERROR_ISO_SCAN));
goto out;
}
nb_blocks = 0;
last_nb_blocks = 0;
iso_blocking_status = 0;
symlinked_syslinux[0] = 0;
StrArrayCreate(&modified_files, 8);
if (validate_md5sum) {
md5sum_totalbytes = 0;
// If there isn't an already existing md5sum.txt create one
if (img_report.has_md5sum != 1) {
static_sprintf(path, "%s\\%s", dest_dir, md5sum_name[0]);
fd_md5sum = fopenU(path, "wb");
if (fd_md5sum == NULL)
uprintf("WARNING: Could not create '%s'", md5sum_name[0]);
} else {
md5sum_size = ReadISOFileToBuffer(src_iso, md5sum_name[0], &md5sum_data);
md5sum_pos = md5sum_data;
}
}
}
// 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("%sImage is a UDF image", spacing);
p_udf_root = udf_get_root(p_udf, true, 0);
if (p_udf_root == NULL) {
uprintf("%sCould not locate UDF root directory", spacing);
goto try_iso;
}
if (scan_only) {
if (udf_get_logical_volume_id(p_udf, img_report.label, sizeof(img_report.label)) <= 0)
img_report.label[0] = 0;
// Open the UDF as ISO so that we can perform size checks
p_iso = iso9660_open(src_iso);
}
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 || img_report.has_long_filename ||
(img_report.has_symlinks == SYMLINKS_RR)))) {
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'%s' doesn't look like an ISO image", spacing, src_iso);
r = 1;
goto out;
}
uprintf("%sImage is an ISO9660 image", spacing);
joliet_level = iso9660_ifs_get_joliet_level(p_iso);
if (scan_only) {
if (iso9660_ifs_get_volume_id(p_iso, &tmp)) {
static_strcpy(img_report.label, tmp);
safe_free(tmp);
} else
img_report.label[0] = 0;
} else {
if (iso_extension_mask & (ISO_EXTENSION_JOLIET|ISO_EXTENSION_ROCK_RIDGE))
uprintf("%sThis image will be extracted using %s extensions (if present)", spacing,
(iso_extension_mask & ISO_EXTENSION_JOLIET)?"Joliet":"Rock Ridge");
else
uprintf("%sThis image will not be extracted using any ISO extensions", spacing);
}
r = iso_extract_files(p_iso, "");
out:
iso_blocking_status = -1;
if (scan_only) {
struct __stat64 stat;
// Find if there is a mismatch between the ISO size, as reported by the PVD, and the actual file size
if ((iso9660_ifs_read_pvd(p_iso, &pvd)) && (_stat64U(src_iso, &stat) == 0))
img_report.mismatch_size = (int64_t)(iso9660_get_pvd_space_size(&pvd)) * ISO_BLOCKSIZE - stat.st_size;
// Remove trailing spaces from the label
for (k = (int)safe_strlen(img_report.label) - 1; ((k > 0) && (isspaceU(img_report.label[k]))); k--)
img_report.label[k] = 0;
// We use the fact that UDF_BLOCKSIZE and ISO_BLOCKSIZE are the same here
img_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 img_report.cfg_path string to maximum length, so that we don't have to
// do a special case for StrArray entry 0.
memset(img_report.cfg_path, '_', sizeof(img_report.cfg_path) - 1);
img_report.cfg_path[sizeof(img_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)) {
static_strcpy(img_report.cfg_path, config_path.String[i]);
img_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(img_report.cfg_path) >= safe_strlen(config_path.String[i]))
static_strcpy(img_report.cfg_path, config_path.String[i]);
}
uprintf(" Will use '%s' for Syslinux", img_report.cfg_path);
// Extract all of the isolinux.bin files we found to identify their versions
for (i = 0; i < isolinux_path.Index; i++) {
char isolinux_tmp[MAX_PATH];
static_sprintf(isolinux_tmp, "%sisolinux.tmp", temp_dir);
size = (size_t)ExtractISOFile(src_iso, isolinux_path.String[i], isolinux_tmp, FILE_ATTRIBUTE_NORMAL);
if ((size == 0) || (read_file(isolinux_tmp, &buf) != size)) {
uprintf(" Could not access %s", isolinux_path.String[i]);
} else {
sl_version = GetSyslinuxVersion(buf, size, &ext);
if (img_report.sl_version == 0) {
static_strcpy(img_report.sl_version_ext, ext);
img_report.sl_version = sl_version;
sl_index = i;
} else if ((img_report.sl_version != sl_version) || (safe_strcmp(img_report.sl_version_ext, ext) != 0)) {
uprintf(" Found conflicting isolinux versions:\r\n '%s' (%d.%02d%s) vs '%s' (%d.%02d%s)",
isolinux_path.String[sl_index], SL_MAJOR(img_report.sl_version), SL_MINOR(img_report.sl_version),
img_report.sl_version_ext, isolinux_path.String[i], SL_MAJOR(sl_version), SL_MINOR(sl_version), ext);
// Workaround for Antergos and other ISOs, that have multiple Syslinux versions.
// Where possible, prefer to the one that resides in the same directory as the config file.
for (j=safe_strlen(img_report.cfg_path); (j > 0) && (img_report.cfg_path[j] != '/'); j--);
if (safe_strnicmp(img_report.cfg_path, isolinux_path.String[i], j) == 0) {
static_strcpy(img_report.sl_version_ext, ext);
img_report.sl_version = sl_version;
sl_index = i;
}
}
free(buf);
}
DeleteFileU(isolinux_tmp);
}
if (img_report.sl_version != 0) {
static_sprintf(img_report.sl_version_str, "%d.%02d",
SL_MAJOR(img_report.sl_version), SL_MINOR(img_report.sl_version));
uprintf(" Detected Syslinux version: %s%s (from '%s')",
img_report.sl_version_str, img_report.sl_version_ext, isolinux_path.String[sl_index]);
if ( (has_ldlinux_c32 && (SL_MAJOR(img_report.sl_version) < 5))
|| (!has_ldlinux_c32 && (SL_MAJOR(img_report.sl_version) >= 5)) )
uprintf(" Warning: Conflict between Isolinux version and the presence of ldlinux.c32...");
} else {
// Couldn't find a version from isolinux.bin. Force set to the versions we embed
img_report.sl_version = embedded_sl_version[has_ldlinux_c32?1:0];
static_sprintf(img_report.sl_version_str, "%d.%02d",
SL_MAJOR(img_report.sl_version), SL_MINOR(img_report.sl_version));
uprintf(" Warning: Could not detect Isolinux version - Forcing to %s (embedded)",
img_report.sl_version_str);
}
}
if (!IS_EFI_BOOTABLE(img_report) && HAS_EFI_IMG(img_report) && HasEfiImgBootLoaders()) {
img_report.has_efi = 0x8000;
}
if (HAS_WINPE(img_report)) {
// 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
static_sprintf(path, "/%s/txtsetup.sif",
basedir[((img_report.winpe&WINPE_I386) == WINPE_I386)?0:((img_report.winpe&WINPE_AMD64) == WINPE_AMD64?1:2)]);
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:\r\n OsLoadOptions = %s", tmp);
img_report.uses_minint = (strstr(tmp, "/minint") != NULL);
}
DeleteFileU(tmp_sif);
safe_free(tmp);
}
if (HAS_WININST(img_report)) {
img_report.wininst_version = GetInstallWimVersion(src_iso);
}
if (img_report.has_grub2) {
char grub_path[128];
static_sprintf(grub_path, "%s/normal.mod", &grub_dirname[img_report.has_grub2 - 1][1]);
// In case we have a GRUB2 based iso, we extract boot/grub/i386-pc/normal.mod to parse its version
img_report.grub2_version[0] = 0;
// coverity[swapped_arguments]
if (GetTempFileNameU(temp_dir, APPLICATION_NAME, 0, path) != 0) {
size = (size_t)ExtractISOFile(src_iso, grub_path, path, FILE_ATTRIBUTE_NORMAL);
if ((size == 0) || (read_file(path, &buf) != size))
uprintf(" Could not read Grub version from '%s'", grub_path);
else
GetGrubVersion(buf, size);
free(buf);
DeleteFileU(path);
}
if (img_report.grub2_version[0] == 0) {
uprintf(" Could not detect Grub version");
img_report.has_grub2 = 0;
}
}
StrArrayDestroy(&config_path);
StrArrayDestroy(&isolinux_path);
SendMessage(hMainDialog, UM_PROGRESS_EXIT, 0, 0);
} else {
// Solus and other ISOs only provide EFI boot files in a FAT efi.img
// Also work around ISOs that have a borked symbolic link for bootx64.efi.
// See https://github.com/linuxmint/linuxmint/issues/622.
if (img_report.has_efi & 0xc000) {
if (img_report.has_efi & 0x4000) {
uprintf("Broken UEFI bootloader detected - Applying workaround:");
static_sprintf(path, "%s\\EFI\\boot\\bootx64.efi", dest_dir);
DeleteFileU(path);
}
DumpFatDir(dest_dir, 0);
}
if (HAS_SYSLINUX(img_report)) {
static_sprintf(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 && img_report.needs_syslinux_overwrite) {
fclose(fd);
fd = NULL;
static_sprintf(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", path);
r = 1;
} else {
fprintf(fd, "DEFAULT loadconfig\n\nLABEL loadconfig\n CONFIG %s\n", img_report.cfg_path);
for (i = safe_strlen(img_report.cfg_path); (i > 0) && (img_report.cfg_path[i] != '/'); i--);
if (i > 0) {
img_report.cfg_path[i] = 0;
fprintf(fd, " APPEND %s/\n", img_report.cfg_path);
img_report.cfg_path[i] = '/';
}
uprintf("Created: %s → %s", path, img_report.cfg_path);
}
}
if (fd != NULL)
fclose(fd);
// Workaround needed for Knoppix that has a /boot/syslinux that links to /boot/isolinux/
// with EFI Syslinux trying to read /boot/syslinux/syslnx[32|64].cfg as the config file.
if (symlinked_syslinux[0] != 0) {
static const char* efi_cfg_name[] = { "syslnx32.cfg", "syslnx64.cfg" };
size_t len = strlen(symlinked_syslinux);
char isolinux_dir[MAX_PATH];
static_strcpy(isolinux_dir, symlinked_syslinux);
assert(len > 8);
// ".../syslinux" -> ".../isolinux"
isolinux_dir[len - 8] = 'i';
isolinux_dir[len - 7] = 's';
isolinux_dir[len - 6] = 'o';
// Delete the empty syslinux symbolic link remnant and replace it with a syslinux/ dir
DeleteFileA(symlinked_syslinux);
CreateDirectoryA(symlinked_syslinux, NULL);
// Now add the relevant config files that link back to the ones in isolinux/
for (i = 0; i < ARRAYSIZE(efi_cfg_name); i++) {
static_sprintf(path, "%s/%s", isolinux_dir, efi_cfg_name[i]);
if (!PathFileExistsA(path))
continue;
static_sprintf(path, "%s/%s", symlinked_syslinux, efi_cfg_name[i]);
fd = fopen(path, "w");
if (fd == NULL) {
uprintf("Unable to create %s - booting from USB may not work", path);
r = 1;
continue;
}
static_sprintf(path, "%s/%s", isolinux_dir, efi_cfg_name[i]);
fprintf(fd, "DEFAULT loadconfig\n\nLABEL loadconfig\n CONFIG %s\n APPEND %s\n", &path[2], &isolinux_dir[2]);
fclose(fd);
to_windows_path(symlinked_syslinux);
uprintf("Created: %s\\%s → %s", symlinked_syslinux, efi_cfg_name[i], &path[2]);
to_unix_path(symlinked_syslinux);
}
}
} else if (HAS_BOOTMGR(img_report) && enable_ntfs_compression) {
// bootmgr might need to be uncompressed: https://github.com/pbatard/rufus/issues/1381
RunCommand("compact /u bootmgr* efi/boot/*.efi", dest_dir, TRUE);
}
// Exception for Slax Syslinux UEFI bootloaders...
// ...that don't appear to work anyway as of slax-64bit-slackware-15.0.3.iso
static_sprintf(path, "%s\\slax\\boot\\EFI", dest_dir);
if (PathFileExistsA(path)) {
char dst_path[16];
static_sprintf(dst_path, "%s\\EFI", dest_dir);
if (!PathFileExistsA(dst_path)) {
if (MoveFileA(path, dst_path))
uprintf("Moved: %s → %s", path, dst_path);
else
uprintf("Could not move %s → %s", path, dst_path, WindowsErrorString());
}
}
if (fd_md5sum != NULL) {
uprintf("Created: %s\\%s (%s)", dest_dir, md5sum_name[0], SizeToHumanReadable(ftell(fd_md5sum), FALSE, FALSE));
fclose(fd_md5sum);
} else if (md5sum_data != NULL) {
safe_free(md5sum_data);
md5sum_size = 0;
}
}
iso9660_close(p_iso);
udf_close(p_udf);
if ((r != 0) && (ErrorStatus == 0))
ErrorStatus = RUFUS_ERROR(APPERR(scan_only ? ERROR_ISO_SCAN : ERROR_ISO_EXTRACT));
return (r == 0);
}
int64_t ExtractISOFile(const char* iso, const char* iso_file, const char* dest_file, DWORD attributes)
{
size_t i;
ssize_t read_size;
int64_t file_length, r = 0;
char buf[UDF_BLOCKSIZE];
DWORD buf_size, wr_size;
iso9660_t* p_iso = NULL;
udf_t* p_udf = NULL;
udf_dirent_t *p_udf_root = NULL, *p_udf_file = NULL;
iso9660_stat_t *p_statbuf = NULL;
lsn_t lsn;
HANDLE file_handle = INVALID_HANDLE_VALUE;
file_handle = CreateFileU(dest_file, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ, NULL, CREATE_ALWAYS, attributes, NULL);
if (file_handle == INVALID_HANDLE_VALUE) {
uprintf(" Could not create file %s: %s", dest_file, WindowsErrorString());
goto out;
}
// First try to open as UDF - fallback to ISO if it failed
p_udf = udf_open(iso);
if (p_udf == NULL)
goto try_iso;
p_udf_root = udf_get_root(p_udf, true, 0);
if (p_udf_root == NULL) {
uprintf("Could not locate UDF root directory");
goto out;
}
p_udf_file = udf_fopen(p_udf_root, iso_file);
if (!p_udf_file) {
uprintf("Could not locate file %s in ISO image", iso_file);
goto out;
}
file_length = udf_get_file_length(p_udf_file);
while (file_length > 0) {
memset(buf, 0, UDF_BLOCKSIZE);
read_size = udf_read_block(p_udf_file, buf, 1);
if (read_size < 0) {
uprintf("Error reading UDF file %s", iso_file);
goto out;
}
buf_size = (DWORD)MIN(file_length, read_size);
if (!WriteFileWithRetry(file_handle, buf, buf_size, &wr_size, WRITE_RETRIES)) {
uprintf(" Error writing file %s: %s", dest_file, WindowsErrorString());
goto out;
}
file_length -= read_size;
r += read_size;
}
goto out;
try_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;
}
p_statbuf = iso9660_ifs_stat_translate(p_iso, iso_file);
if (p_statbuf == NULL) {
uprintf("Could not get ISO-9660 file information for file %s", iso_file);
goto out;
}
file_length = p_statbuf->total_size;
for (i = 0; file_length > 0; i++) {
memset(buf, 0, ISO_BLOCKSIZE);
lsn = p_statbuf->lsn + (lsn_t)i;
if (iso9660_iso_seek_read(p_iso, buf, lsn, 1) != ISO_BLOCKSIZE) {
uprintf(" Error reading ISO9660 file %s at LSN %lu", iso_file, (long unsigned int)lsn);
goto out;
}
buf_size = (DWORD)MIN(file_length, ISO_BLOCKSIZE);
if (!WriteFileWithRetry(file_handle, buf, buf_size, &wr_size, WRITE_RETRIES)) {
uprintf(" Error writing file %s: %s", dest_file, WindowsErrorString());
goto out;
}
file_length -= ISO_BLOCKSIZE;
r += ISO_BLOCKSIZE;
}
out:
safe_closehandle(file_handle);
if (r == 0)
DeleteFileU(dest_file);
iso9660_stat_free(p_statbuf);
udf_dirent_free(p_udf_root);
udf_dirent_free(p_udf_file);
iso9660_close(p_iso);
udf_close(p_udf);
return r;
}
/*
* Extract a file to a buffer. Buffer must be freed by the caller.
*/
uint32_t ReadISOFileToBuffer(const char* iso, const char* iso_file, uint8_t** buf)
{
ssize_t read_size;
int64_t file_length;
uint32_t ret = 0, nb_blocks;
iso9660_t* p_iso = NULL;
udf_t* p_udf = NULL;
udf_dirent_t *p_udf_root = NULL, *p_udf_file = NULL;
iso9660_stat_t* p_statbuf = NULL;
*buf = NULL;
// First try to open as UDF - fallback to ISO if it failed
p_udf = udf_open(iso);
if (p_udf == NULL)
goto try_iso;
p_udf_root = udf_get_root(p_udf, true, 0);
if (p_udf_root == NULL) {
uprintf("Could not locate UDF root directory");
goto out;
}
p_udf_file = udf_fopen(p_udf_root, iso_file);
if (!p_udf_file) {
uprintf("Could not locate file %s in ISO image", iso_file);
goto out;
}
file_length = udf_get_file_length(p_udf_file);
if (file_length > UINT32_MAX) {
uprintf("Only files smaller than 4 GB are supported");
goto out;
}
nb_blocks = (uint32_t)((file_length + UDF_BLOCKSIZE - 1) / UDF_BLOCKSIZE);
*buf = malloc(nb_blocks * UDF_BLOCKSIZE + 1);
if (*buf == NULL) {
uprintf("Could not allocate buffer for file %s", iso_file);
goto out;
}
read_size = udf_read_block(p_udf_file, *buf, nb_blocks);
if (read_size < 0 || read_size != file_length) {
uprintf("Error reading UDF file %s", iso_file);
goto out;
}
ret = (uint32_t)file_length;
(*buf)[ret] = 0;
goto out;
try_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;
}
p_statbuf = iso9660_ifs_stat_translate(p_iso, iso_file);
if (p_statbuf == NULL) {
uprintf("Could not get ISO-9660 file information for file %s", iso_file);
goto out;
}
file_length = p_statbuf->total_size;
if (file_length > UINT32_MAX) {
uprintf("Only files smaller than 4 GB are supported");
goto out;
}
nb_blocks = (uint32_t)((file_length + ISO_BLOCKSIZE - 1) / ISO_BLOCKSIZE);
*buf = malloc(nb_blocks * ISO_BLOCKSIZE + 1);
if (*buf == NULL) {
uprintf("Could not allocate buffer for file %s", iso_file);
goto out;
}
if (iso9660_iso_seek_read(p_iso, *buf, p_statbuf->lsn, nb_blocks) != nb_blocks * ISO_BLOCKSIZE) {
uprintf("Error reading ISO file %s", iso_file);
goto out;
}
ret = (uint32_t)file_length;
(*buf)[ret] = 0;
out:
iso9660_stat_free(p_statbuf);
udf_dirent_free(p_udf_root);
udf_dirent_free(p_udf_file);
iso9660_close(p_iso);
udf_close(p_udf);
if (ret == 0)
safe_free(*buf);
return ret;
}
uint32_t GetInstallWimVersion(const char* iso)
{
char *wim_path = NULL, buf[UDF_BLOCKSIZE] = { 0 };
uint32_t* wim_header = (uint32_t*)buf, r = 0xffffffff;
iso9660_t* p_iso = NULL;
udf_t* p_udf = NULL;
udf_dirent_t *p_udf_root = NULL, *p_udf_file = NULL;
iso9660_stat_t *p_statbuf = NULL;
wim_path = safe_strdup(&img_report.wininst_path[0][2]);
if (wim_path == NULL)
goto out;
// UDF indiscriminately accepts slash or backslash delimiters,
// but ISO-9660 requires slash
to_unix_path(wim_path);
// First try to open as UDF - fallback to ISO if it failed
p_udf = udf_open(iso);
if (p_udf == NULL)
goto try_iso;
p_udf_root = udf_get_root(p_udf, true, 0);
if (p_udf_root == NULL) {
uprintf("Could not locate UDF root directory");
goto out;
}
p_udf_file = udf_fopen(p_udf_root, wim_path);
if (!p_udf_file) {
uprintf("Could not locate file %s in ISO image", wim_path);
goto out;
}
if (udf_read_block(p_udf_file, buf, 1) != UDF_BLOCKSIZE) {
uprintf("Error reading UDF file %s", wim_path);
goto out;
}
r = wim_header[3];
goto out;
try_iso:
p_iso = iso9660_open_ext(iso, ISO_EXTENSION_MASK);
if (p_iso == NULL) {
uprintf("Could not open image '%s'", iso);
goto out;
}
p_statbuf = iso9660_ifs_stat_translate(p_iso, wim_path);
if (p_statbuf == NULL) {
uprintf("Could not get ISO-9660 file information for file %s", wim_path);
goto out;
}
if (iso9660_iso_seek_read(p_iso, buf, p_statbuf->lsn, 1) != ISO_BLOCKSIZE) {
uprintf("Error reading ISO-9660 file %s at LSN %d", wim_path, p_statbuf->lsn);
goto out;
}
r = wim_header[3];
out:
iso9660_stat_free(p_statbuf);
udf_dirent_free(p_udf_root);
udf_dirent_free(p_udf_file);
iso9660_close(p_iso);
udf_close(p_udf);
safe_free(wim_path);
return bswap_uint32(r);
}
#define ISO_NB_BLOCKS 16
typedef struct {
iso9660_t* p_iso;
lsn_t lsn;
libfat_sector_t sec_start;
// Use a multi block buffer, to improve sector reads
uint8_t buf[ISO_BLOCKSIZE * ISO_NB_BLOCKS];
} iso9660_readfat_private;
/*
* Read sectors from a FAT img file residing on an ISO-9660 filesystem.
* NB: This assumes that the img file sectors are contiguous on the ISO.
*/
int iso9660_readfat(intptr_t pp, void *buf, size_t secsize, libfat_sector_t sec)
{
iso9660_readfat_private* p_private = (iso9660_readfat_private*)pp;
if (sizeof(p_private->buf) % secsize != 0) {
uprintf("iso9660_readfat: Sector size %zu is not a divisor of %zu", secsize, sizeof(p_private->buf));
return 0;
}
if ((sec < p_private->sec_start) || (sec >= p_private->sec_start + sizeof(p_private->buf) / secsize)) {
// Sector being queried is not in our multi block buffer -> Update it
p_private->sec_start = (((sec * secsize) / ISO_BLOCKSIZE) * ISO_BLOCKSIZE) / secsize;
if (iso9660_iso_seek_read(p_private->p_iso, p_private->buf,
p_private->lsn + (lsn_t)((p_private->sec_start * secsize) / ISO_BLOCKSIZE), ISO_NB_BLOCKS)
!= ISO_NB_BLOCKS * ISO_BLOCKSIZE) {
uprintf("Error reading ISO-9660 file %s at LSN %lu", img_report.efi_img_path,
(long unsigned int)(p_private->lsn + (p_private->sec_start * secsize) / ISO_BLOCKSIZE));
return 0;
}
}
memcpy(buf, &p_private->buf[(sec - p_private->sec_start)*secsize], secsize);
return (int)secsize;
}
/*
* Returns TRUE if an EFI bootloader exists in the img.
*/
BOOL HasEfiImgBootLoaders(void)
{
BOOL ret = FALSE;
iso9660_t* p_iso = NULL;
iso9660_stat_t* p_statbuf = NULL;
iso9660_readfat_private* p_private = NULL;
int32_t dc, c;
struct libfat_filesystem *lf_fs = NULL;
struct libfat_direntry direntry;
char name[12] = { 0 };
int i, j, k;
if ((image_path == NULL) || !HAS_EFI_IMG(img_report))
return FALSE;
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;
}
p_statbuf = iso9660_ifs_stat_translate(p_iso, img_report.efi_img_path);
if (p_statbuf == NULL) {
uprintf("Could not get ISO-9660 file information for file %s", img_report.efi_img_path);
goto out;
}
p_private = malloc(sizeof(iso9660_readfat_private));
if (p_private == NULL)
goto out;
p_private->p_iso = p_iso;
p_private->lsn = p_statbuf->lsn;
p_private->sec_start = 0;
// Populate our initial buffer
if (iso9660_iso_seek_read(p_private->p_iso, p_private->buf, p_private->lsn, ISO_NB_BLOCKS) != ISO_NB_BLOCKS * ISO_BLOCKSIZE) {
uprintf("Error reading ISO-9660 file %s at LSN %lu", img_report.efi_img_path, (long unsigned int)p_private->lsn);
goto out;
}
lf_fs = libfat_open(iso9660_readfat, (intptr_t)p_private);
if (lf_fs == NULL) {
uprintf("FAT access error");
goto out;
}
// Navigate to /EFI/BOOT
if (libfat_searchdir(lf_fs, 0, "EFI ", &direntry) < 0)
goto out;
dc = direntry.entry[26] + (direntry.entry[27] << 8);
if (libfat_searchdir(lf_fs, dc, "BOOT ", &direntry) < 0)
goto out;
dc = direntry.entry[26] + (direntry.entry[27] << 8);
for (i = 0; i < ARRAYSIZE(efi_bootname); i++) {
// TODO: bootriscv###.efi will need LFN support but cross that bridge when/if we get there...
if (strlen(efi_bootname[i]) > 12)
continue;
for (j = 0, k = 0; efi_bootname[i][j] != 0; j++) {
if (efi_bootname[i][j] == '.') {
while (k < 8)
name[k++] = ' ';
} else {
name[k++] = toupper(efi_bootname[i][j]);
}
}
c = libfat_searchdir(lf_fs, dc, name, &direntry);
if (c > 0) {
if (!ret)
uprintf(" Detected EFI bootloader(s) (from '%s'):", img_report.efi_img_path);
uprintf(" ● '%s'", efi_bootname[i]);
ret = TRUE;
}
}
out:
if (lf_fs != NULL)
libfat_close(lf_fs);
iso9660_stat_free(p_statbuf);
iso9660_close(p_iso);
safe_free(p_private);
return ret;
}
BOOL DumpFatDir(const char* path, int32_t cluster)
{
// We don't have concurrent calls to this function, so a static lf_fs is fine
static struct libfat_filesystem *lf_fs = NULL;
void* buf;
char *target = NULL, *name = NULL;
BOOL ret = FALSE;
HANDLE handle = NULL;
DWORD size, written;
libfat_diritem_t diritem = { 0 };
libfat_dirpos_t dirpos = { cluster, -1, 0 };
libfat_sector_t s;
iso9660_t* p_iso = NULL;
iso9660_stat_t* p_statbuf = NULL;
iso9660_readfat_private* p_private = NULL;
if (path == NULL)
return -1;
if (cluster == 0) {
// Root dir => Perform init stuff
if (image_path == NULL)
return FALSE;
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;
}
p_statbuf = iso9660_ifs_stat_translate(p_iso, img_report.efi_img_path);
if (p_statbuf == NULL) {
uprintf("Could not get ISO-9660 file information for file %s", img_report.efi_img_path);
goto out;
}
p_private = malloc(sizeof(iso9660_readfat_private));
if (p_private == NULL)
goto out;
p_private->p_iso = p_iso;
p_private->lsn = p_statbuf->lsn;
p_private->sec_start = 0;
// Populate our initial buffer
if (iso9660_iso_seek_read(p_private->p_iso, p_private->buf, p_private->lsn, ISO_NB_BLOCKS) != ISO_NB_BLOCKS * ISO_BLOCKSIZE) {
uprintf("Error reading ISO-9660 file %s at LSN %lu", img_report.efi_img_path, (long unsigned int)p_private->lsn);
goto out;
}
lf_fs = libfat_open(iso9660_readfat, (intptr_t)p_private);
if (lf_fs == NULL) {
uprintf("FAT access error");
goto out;
}
}
do {
dirpos.cluster = libfat_dumpdir(lf_fs, &dirpos, &diritem);
if (dirpos.cluster >= 0) {
name = wchar_to_utf8(diritem.name);
target = malloc(strlen(path) + safe_strlen(name) + 2);
if ((name == NULL) || (target == NULL)) {
uprintf("Could not allocate buffer");
goto out;
}
strcpy(target, path);
strcat(target, "\\");
strcat(target, name);
if (diritem.attributes & 0x10) {
// Directory => Create directory
if (!CreateDirectoryU(target, 0) && (GetLastError() != ERROR_ALREADY_EXISTS)) {
uprintf("Could not create directory '%s': %s", target, WindowsErrorString());
continue;
}
if (!DumpFatDir(target, dirpos.cluster))
goto out;
} else if (!PathFileExistsU(target)) {
// Need to figure out if it's a .conf file (Damn you Solus!!)
EXTRACT_PROPS props = { 0 };
size_t len = strlen(name);
props.is_conf = ((len > 4) && (stricmp(&name[len - 5], ".conf") == 0));
uprintf("Extracting: %s (from '%s', %s)", target, img_report.efi_img_path,
SizeToHumanReadable(diritem.size, FALSE, FALSE));
handle = CreateFileU(target, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ,
NULL, CREATE_ALWAYS, diritem.attributes, NULL);
if (handle == INVALID_HANDLE_VALUE) {
uprintf("Could not create '%s': %s", target, WindowsErrorString());
continue;
}
written = 0;
s = libfat_clustertosector(lf_fs, dirpos.cluster);
while ((s != 0) && (s < 0xFFFFFFFFULL) && (written < diritem.size)) {
buf = libfat_get_sector(lf_fs, s);
if (buf == NULL)
ErrorStatus = RUFUS_ERROR(ERROR_SECTOR_NOT_FOUND);
if (IS_ERROR(ErrorStatus))
goto out;
size = MIN(LIBFAT_SECTOR_SIZE, diritem.size - written);
if (!WriteFileWithRetry(handle, buf, size, &size, WRITE_RETRIES) ||
(size != MIN(LIBFAT_SECTOR_SIZE, diritem.size - written))) {
uprintf("Could not write '%s': %s", target, WindowsErrorString());
break;
}
written += size;
s = libfat_nextsector(lf_fs, s);
// Trust me, you *REALLY* want to invoke libfat_flush() here
libfat_flush(lf_fs);
}
safe_closehandle(handle);
if (props.is_conf)
fix_config(target, NULL, NULL, &props);
}
safe_free(target);
safe_free(name);
}
// coverity[tainted_data]
} while (dirpos.cluster >= 0);
ret = TRUE;
out:
if (cluster == 0) {
if (lf_fs != NULL) {
libfat_close(lf_fs);
lf_fs = NULL;
}
iso9660_stat_free(p_statbuf);;
iso9660_close(p_iso);
safe_free(p_private);
}
safe_closehandle(handle);
safe_free(name);
safe_free(target);
return ret;
}
// TODO: If we can't get save to ISO from virtdisk, we might as well drop this
static DWORD WINAPI IsoSaveImageThread(void* param)
{
BOOL s;
DWORD rSize, wSize;
IMG_SAVE* img_save = (IMG_SAVE*)param;
HANDLE hPhysicalDrive = INVALID_HANDLE_VALUE;
HANDLE hDestImage = INVALID_HANDLE_VALUE;
LARGE_INTEGER li;
uint8_t* buffer = NULL;
uint64_t wb;
int i;
assert(img_save->Type == VIRTUAL_STORAGE_TYPE_DEVICE_ISO);
PrintInfoDebug(0, MSG_225);
hPhysicalDrive = CreateFileA(img_save->DevicePath, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
if (hPhysicalDrive == INVALID_HANDLE_VALUE) {
ErrorStatus = RUFUS_ERROR(ERROR_OPEN_FAILED);
goto out;
}
// In case someone poked the disc before us
li.QuadPart = 0;
if (!SetFilePointerEx(hPhysicalDrive, li, NULL, FILE_BEGIN))
uprintf("Warning: Unable to rewind device position - wrong data might be copied!");
hDestImage = CreateFileU(img_save->ImagePath, GENERIC_WRITE, FILE_SHARE_WRITE, NULL,
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if (hDestImage == INVALID_HANDLE_VALUE) {
uprintf("Could not open image '%s': %s", img_save->ImagePath, WindowsErrorString());
ErrorStatus = RUFUS_ERROR(ERROR_OPEN_FAILED);
goto out;
}
buffer = (uint8_t*)_mm_malloc(img_save->BufSize, 16);
if (buffer == NULL) {
ErrorStatus = RUFUS_ERROR(ERROR_NOT_ENOUGH_MEMORY);
uprintf("Could not allocate buffer");
goto out;
}
uprintf("Will use a buffer size of %s", SizeToHumanReadable(img_save->BufSize, FALSE, FALSE));
uprintf("Saving to image '%s'...", img_save->ImagePath);
// Don't bother trying for something clever, using double buffering overlapped and whatnot:
// With Windows' default optimizations, sync read + sync write for sequential operations
// will be as fast, if not faster, than whatever async scheme you can come up with.
UpdateProgressWithInfoInit(NULL, FALSE);
for (wb = 0; ; wb += wSize) {
// Optical drives do not appear to increment the sectors to read automatically
li.QuadPart = wb;
if (!SetFilePointerEx(hPhysicalDrive, li, NULL, FILE_BEGIN))
uprintf("Warning: Unable to set device position - wrong data might be copied!");
s = ReadFile(hPhysicalDrive, buffer,
(DWORD)MIN(img_save->BufSize, img_save->DeviceSize - wb), &rSize, NULL);
if (!s) {
ErrorStatus = RUFUS_ERROR(ERROR_READ_FAULT);
uprintf("Read error: %s", WindowsErrorString());
goto out;
}
if (rSize == 0)
break;
UpdateProgressWithInfo(OP_FORMAT, MSG_261, wb, img_save->DeviceSize);
for (i = 1; i <= WRITE_RETRIES; i++) {
CHECK_FOR_USER_CANCEL;
s = WriteFile(hDestImage, buffer, rSize, &wSize, NULL);
if ((s) && (wSize == rSize))
break;
if (s)
uprintf("Write error: Wrote %d bytes, expected %d bytes", wSize, rSize);
else
uprintf("Write error: %s", WindowsErrorString());
if (i < WRITE_RETRIES) {
li.QuadPart = wb;
uprintf("Retrying in %d seconds...", WRITE_TIMEOUT / 1000);
Sleep(WRITE_TIMEOUT);
if (!SetFilePointerEx(hDestImage, li, NULL, FILE_BEGIN)) {
uprintf("Write error: Could not reset position - %s", WindowsErrorString());
goto out;
}
} else {
ErrorStatus = RUFUS_ERROR(ERROR_WRITE_FAULT);
goto out;
}
Sleep(200);
}
if (i > WRITE_RETRIES)
goto out;
}
if (wb != img_save->DeviceSize) {
uprintf("Error: wrote %s, expected %s", SizeToHumanReadable(wb, FALSE, FALSE),
SizeToHumanReadable(img_save->DeviceSize, FALSE, FALSE));
ErrorStatus = RUFUS_ERROR(ERROR_WRITE_FAULT);
goto out;
}
uprintf("Operation complete (Wrote %s).", SizeToHumanReadable(wb, FALSE, FALSE));
out:
safe_free(img_save->ImagePath);
safe_mm_free(buffer);
safe_closehandle(hDestImage);
safe_unlockclose(hPhysicalDrive);
PostMessage(hMainDialog, UM_FORMAT_COMPLETED, (WPARAM)TRUE, 0);
ExitThread(0);
}
void IsoSaveImage(void)
{
static IMG_SAVE img_save = { 0 };
char filename[33] = "disc_image.iso";
EXT_DECL(img_ext, filename, __VA_GROUP__("*.iso"), __VA_GROUP__(lmprintf(MSG_036)));
if (op_in_progress || (format_thread != NULL))
return;
img_save.Type = VIRTUAL_STORAGE_TYPE_DEVICE_ISO;
if (!GetOpticalMedia(&img_save)) {
uprintf("No dumpable optical media found.");
return;
}
// Adjust the buffer size according to the disc size so that we get a decent speed.
for (img_save.BufSize = 32 * MB;
(img_save.BufSize > 8 * MB) && (img_save.DeviceSize <= img_save.BufSize * 64);
img_save.BufSize /= 2);
if ((img_save.Label != NULL) && (img_save.Label[0] != 0))
static_sprintf(filename, "%s.iso", img_save.Label);
img_save.ImagePath = FileDialog(TRUE, NULL, &img_ext, 0);
if (img_save.ImagePath == NULL)
return;
uprintf("ISO media size %s", SizeToHumanReadable(img_save.DeviceSize, FALSE, FALSE));
SendMessage(hMainDialog, UM_PROGRESS_INIT, 0, 0);
ErrorStatus = 0;
// Disable all controls except cancel
EnableControls(FALSE, FALSE);
InitProgress(TRUE);
format_thread = CreateThread(NULL, 0, IsoSaveImageThread, &img_save, 0, NULL);
if (format_thread != NULL) {
uprintf("\r\nSave to ISO operation started");
PrintInfo(0, -1);
SendMessage(hMainDialog, UM_TIMER_START, 0, 0);
} else {
uprintf("Unable to start ISO save thread");
ErrorStatus = RUFUS_ERROR(APPERR(ERROR_CANT_START_THREAD));
safe_free(img_save.ImagePath);
PostMessage(hMainDialog, UM_FORMAT_COMPLETED, (WPARAM)FALSE, 0);
}
}
Reference in a new issue View git blame Copy permalink