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rufus/src/iso.c
Pete Batard b80f7c0785 [iso] update libcdio to latest 
* Also clean up some of the code in iso.c
2018-06-04 12:20:14 +01:00

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/*
* Rufus: The Reliable USB Formatting Utility
* ISO file extraction
* Copyright © 2011-2018 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 <virtdisk.h>
#include <cdio/cdio.h>
#include <cdio/logging.h>
#include <cdio/iso9660.h>
#include <cdio/udf.h>
#include "rufus.h"
#include "libfat.h"
#include "missing.h"
#include "resource.h"
#include "msapi_utf8.h"
#include "localization.h"
// How often should we update the progress bar (in 2K blocks) as updating
// the progress bar for every block will bring extraction to a crawl
#define PROGRESS_THRESHOLD 128
#define FOUR_GIGABYTES 4294967296LL
// 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_syslinux_cfg;
BOOLEAN is_grub_cfg;
BOOLEAN is_old_c32[NB_OLD_C32];
} EXTRACT_PROPS;
RUFUS_IMG_REPORT img_report;
int64_t iso_blocking_status = -1;
extern BOOL preserve_timestamps;
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_efi_name = "bootmgr.efi";
static const char* grldr_name = "grldr";
static const char* ldlinux_name = "ldlinux.sys";
static const char* ldlinux_c32 = "ldlinux.c32";
static const char* efi_dirname = "/efi/boot";
static const char* efi_bootname[] = { "bootia32.efi", "bootia64.efi", "bootx64.efi", "bootarm.efi", "bootaa64.efi", "bootebc.efi" };
static const char* install_wim_path = "/sources";
static const char* install_wim_name[] = { "install.wim", "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";
static const char* grub_cfg = "grub.cfg";
static const char* syslinux_cfg[] = { "isolinux.cfg", "syslinux.cfg", "extlinux.conf" };
static const char* isolinux_bin[] = { "isolinux.bin", "boot.bin" };
static const char* pe_dirname[] = { "/i386", "/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* stupid_antivirus = " NOTE: This is usually caused by a poorly designed security solution. "
"See https://rufus.akeo.ie/compatibility.\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 uint64_t total_blocks, nb_blocks;
static BOOL scan_only = FALSE;
static StrArray config_path, isolinux_path;
// 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)
{
switch(level) {
case CDIO_LOG_DEBUG:
// TODO: use a setting to enable libcdio debug?
return;
default:
uprintf("libcdio: %s\n", 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;
if ((scan_only) && (i == 1) && (safe_stricmp(psz_dirname, efi_dirname) == 0))
img_report.has_efi_syslinux = TRUE;
}
}
// 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;
}
// Check for config files that may need patching
if (!scan_only) {
len = safe_strlen(psz_basename);
if ((len >= 4) && safe_stricmp(&psz_basename[len-4], ".cfg") == 0)
props->is_cfg = TRUE;
}
// Check for GRUB artifacts
if (scan_only) {
if (safe_stricmp(psz_dirname, grub_dirname) == 0)
img_report.has_grub2 = TRUE;
} else if (safe_stricmp(psz_basename, grub_cfg) == 0) {
props->is_grub_cfg = TRUE;
}
if (scan_only) {
// Check for a syslinux v5.0+ file anywhere
if (safe_stricmp(psz_basename, ldlinux_c32) == 0) {
has_ldlinux_c32 = TRUE;
}
// Check for various files in root (psz_dirname = "")
if ((psz_dirname != NULL) && (psz_dirname[0] == 0)) {
if (safe_strnicmp(psz_basename, bootmgr_efi_name, safe_strlen(bootmgr_efi_name)-5) == 0) {
img_report.has_bootmgr = 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, bootmgr_efi_name) == 0) {
img_report.has_efi |= 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
}
// Check for "install.wim" or "install.swm" in "/sources"
if ((install_wim_path != NULL) && (safe_stricmp(psz_dirname, install_wim_path) == 0)) {
for (i=0; i<ARRAYSIZE(install_wim_name); i++)
if (safe_stricmp(psz_basename, install_wim_name[i]) == 0)
static_sprintf(img_report.install_wim_path, "?:\\%s\\%s", &install_wim_path[1], install_wim_name[i]);
}
// Check for PE (XP) specific files in "/i386" 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<<i)<<(ARRAYSIZE(pe_dirname)*j);
if (props->is_syslinux_cfg) {
// Maintain a list of all the isolinux/syslinux configs identified so far
StrArrayAdd(&config_path, psz_fullpath, TRUE);
}
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 >= FOUR_GIGABYTES)
img_report.has_4GB_file = TRUE;
// Compute projected size needed
total_blocks += file_length / ISO_BLOCKSIZE;
// NB: ISO_BLOCKSIZE = UDF_BLOCKSIZE
if ((file_length != 0) && (file_length % ISO_BLOCKSIZE != 0))
total_blocks++;
return 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_strcmp(psz_basename, ldlinux_name) == 0)) {
uprintf("skipping % file from ISO image\n", ldlinux_name);
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)
{
size_t i, nul_pos;
char *iso_label = NULL, *usb_label = NULL, *src, *dst;
nul_pos = safe_strlen(psz_fullpath);
src = safe_strdup(psz_fullpath);
if (src == NULL)
return;
for (i=0; i<nul_pos; i++)
if (src[i] == '/') src[i] = '\\';
// 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) {
iso_label = replace_char(img_report.label, ' ', "\\x20");
usb_label = replace_char(img_report.usb_label, ' ', "\\x20");
if ((iso_label != NULL) && (usb_label != NULL)) {
if (replace_in_token_data(src, (props->is_grub_cfg) ? "linuxefi" : "append",
iso_label, usb_label, TRUE) != NULL)
uprintf(" Patched %s: '%s' ➔ '%s'\n", src, iso_label, usb_label);
}
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\n", 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'\n", src, iso_label, usb_label);
}
safe_free(iso_label);
safe_free(usb_label);
}
free(src);
}
static void print_extracted_file(char* psz_fullpath, int64_t file_length)
{
size_t i, nul_pos;
if (psz_fullpath == NULL)
return;
// Replace slashes with backslashes and append the size to the path for UI display
nul_pos = strlen(psz_fullpath);
for (i=0; i<nul_pos; i++)
if (psz_fullpath[i] == '/') psz_fullpath[i] = '\\';
safe_sprintf(&psz_fullpath[nul_pos], 24, " (%s)", SizeToHumanReadable(file_length, TRUE, FALSE));
uprintf("Extracting: %s\n", 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"
// ISO9660 cannot handle backslashes
for (i=0; i<nul_pos; i++)
if (psz_fullpath[i] == '\\') psz_fullpath[i] = '/';
// Remove the appended size for extraction
psz_fullpath[nul_pos] = 0;
}
// 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 = Int32x32To64(t, 10000000) + 116444736000000000;
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;
BOOL r, is_identical;
int length;
size_t i;
char tmp[128], *psz_fullpath = NULL, *psz_sanpath = NULL;
const char* psz_basename;
udf_dirent_t *p_udf_dirent2;
uint8_t buf[UDF_BLOCKSIZE];
int64_t read, file_length;
if ((p_udf_dirent == NULL) || (psz_path == NULL))
return 1;
while ((p_udf_dirent = udf_readdir(p_udf_dirent)) != NULL) {
if (FormatStatus) 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 (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 = CreateFileU(psz_sanpath, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if (file_handle == INVALID_HANDLE_VALUE) {
err = GetLastError();
uprintf(" Unable to create file: %s", WindowsErrorString());
if ((err == ERROR_ACCESS_DENIED) && (safe_strcmp(&psz_sanpath[3], autorun_name) == 0))
uprintf(stupid_antivirus);
else
goto out;
} else while (file_length > 0) {
if (FormatStatus) goto out;
memset(buf, 0, UDF_BLOCKSIZE);
read = udf_read_block(p_udf_dirent, buf, 1);
if (read < 0) {
uprintf(" Error reading UDF file %s", &psz_fullpath[strlen(psz_extract_dir)]);
goto out;
}
buf_size = (DWORD)MIN(file_length, read);
ISO_BLOCKING(r = WriteFileWithRetry(file_handle, buf, buf_size, &wr_size, WRITE_RETRIES));
if (!r) {
uprintf(" Error writing file: %s", WindowsErrorString());
goto out;
}
file_length -= read;
if (nb_blocks++ % PROGRESS_THRESHOLD == 0)
UpdateProgress(OP_DOS, 100.0f*nb_blocks/total_blocks);
}
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)
fix_config(psz_sanpath, psz_path, psz_basename, &props);
safe_free(psz_sanpath);
}
safe_free(psz_fullpath);
}
return 0;
out:
if (p_udf_dirent != NULL)
udf_dirent_free(p_udf_dirent);
ISO_BLOCKING(safe_closehandle(file_handle));
safe_free(psz_fullpath);
return 1;
}
// Returns 0 on success, nonzero on error
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;
BOOL is_symlink, is_identical;
int length, r = 1;
char tmp[128], psz_fullpath[MAX_PATH], *psz_basename, *psz_sanpath;
const char *psz_iso_name = &psz_fullpath[strlen(psz_extract_dir)];
unsigned char buf[ISO_BLOCKSIZE];
CdioListNode_t* p_entnode;
iso9660_stat_t *p_statbuf;
CdioISO9660FileList_t* p_entlist;
size_t i, j;
lsn_t lsn;
int64_t file_length, extent_length;
if ((p_iso == NULL) || (psz_path == NULL))
return 1;
length = _snprintf(psz_fullpath, sizeof(psz_fullpath), "%s%s/", psz_extract_dir, psz_path);
if (length < 0)
return 1;
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);
return 1;
}
_CDIO_LIST_FOREACH(p_entnode, p_entlist) {
if (FormatStatus) goto out;
p_statbuf = (iso9660_stat_t*) _cdio_list_node_data(p_entnode);
// 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;
// libcdio has a memleak for Rock Ridge symlinks. It doesn't look like there's an easy fix there as
// a generic list that's unaware of RR extensions is being used, so we prevent that memleak ourselves
is_symlink = (p_statbuf->rr.psz_symlink != NULL);
if (is_symlink)
img_report.has_symlinks = TRUE;
if (scan_only)
safe_free(p_statbuf->rr.psz_symlink);
} 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);
}
if (iso_extract_files(p_iso, psz_iso_name))
goto out;
} else {
file_length = p_statbuf->size;
if (check_iso_props(psz_path, file_length, psz_basename, psz_fullpath, &props)) {
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);
if (is_symlink) {
if (file_length == 0)
uprintf(" Ignoring Rock Ridge symbolic link to '%s'", p_statbuf->rr.psz_symlink);
safe_free(p_statbuf->rr.psz_symlink);
}
file_handle = CreateFileU(psz_sanpath, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if (file_handle == INVALID_HANDLE_VALUE) {
err = GetLastError();
uprintf(" Unable to create file: %s", WindowsErrorString());
if ((err == ERROR_ACCESS_DENIED) && (safe_strcmp(&psz_sanpath[3], autorun_name) == 0))
uprintf(stupid_antivirus);
else
goto out;
} else for (j=0; j<p_statbuf->extents; j++) {
extent_length = p_statbuf->extsize[j];
for (i=0; extent_length>0; i++) {
if (FormatStatus) goto out;
memset(buf, 0, ISO_BLOCKSIZE);
lsn = p_statbuf->lsn[j] + (lsn_t)i;
if (iso9660_iso_seek_read(p_iso, buf, lsn, 1) != ISO_BLOCKSIZE) {
uprintf(" Error reading ISO9660 file %s at LSN %lu",
psz_iso_name, (long unsigned int)lsn);
goto out;
}
buf_size = (DWORD)MIN(extent_length, ISO_BLOCKSIZE);
ISO_BLOCKING(r = WriteFileWithRetry(file_handle, buf, buf_size, &wr_size, WRITE_RETRIES));
if (!r) {
uprintf(" Error writing file: %s", WindowsErrorString());
goto out;
}
extent_length -= ISO_BLOCKSIZE;
if (nb_blocks++ % PROGRESS_THRESHOLD == 0)
UpdateProgress(OP_DOS, 100.0f*nb_blocks/total_blocks);
}
}
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());
}
ISO_BLOCKING(safe_closehandle(file_handle));
if (props.is_cfg)
fix_config(psz_sanpath, psz_path, psz_basename, &props);
safe_free(psz_sanpath);
}
}
r = 0;
out:
ISO_BLOCKING(safe_closehandle(file_handle));
iso9660_filelist_free(p_entlist);
return r;
}
void GetGrubVersion(char* buf, size_t buf_size)
{
char *p, unauthorized[] = {'<', '>', ':', '|', '*', '?', '\\', '/'};
size_t i;
const char grub_version_str[] = "GRUB version %s";
for (i=0; i<buf_size; i++) {
if (memcmp(&buf[i], grub_version_str, sizeof(grub_version_str)) == 0) {
static_strcpy(img_report.grub2_version, &buf[i + sizeof(grub_version_str)]);
break;
}
}
// Sanitize the string
for (p = &img_report.grub2_version[0]; *p; p++) {
for (i=0; i<sizeof(unauthorized); i++) {
if (*p == unauthorized[i])
*p = '_';
}
}
// <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;
}
BOOL ExtractISO(const char* src_iso, const char* dest_dir, BOOL scan)
{
size_t i, j, size, sl_index = 0;
uint16_t sl_version;
FILE* fd;
int r = 1;
iso9660_t* p_iso = NULL;
iso9660_pvd_t pvd;
udf_t* p_udf = NULL;
udf_dirent_t* p_udf_root;
char *tmp, *buf, *ext;
char path[MAX_PATH], path2[16];
const char* basedir[] = { "i386", "minint" };
const char* tmp_sif = ".\\txtsetup.sif~";
iso_extension_mask_t iso_extension_mask = ISO_EXTENSION_ALL;
char* spacing = " ";
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;
has_ldlinux_c32 = FALSE;
// String array of all isolinux/syslinux locations
StrArrayCreate(&config_path, 8);
StrArrayCreate(&isolinux_path, 8);
PrintInfo(0, MSG_202);
} else {
uprintf("Extracting files...\n");
IGNORE_RETVAL(_chdirU(app_dir));
PrintInfo(0, MSG_231);
if (total_blocks == 0) {
uprintf("Error: ISO has not been properly scanned.\n");
FormatStatus = ERROR_SEVERITY_ERROR|FAC(FACILITY_STORAGE)|APPERR(ERROR_ISO_SCAN);
goto out;
}
nb_blocks = 0;
iso_blocking_status = 0;
}
// First try to open as UDF - fallback to ISO if it failed
p_udf = udf_open(src_iso);
if (p_udf == NULL)
goto try_iso;
uprintf("%sImage is an 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 out;
}
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))) {
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 (j=safe_strlen(img_report.label)-1; ((j>0)&&(isspaceU(img_report.label[j]))); j--)
img_report.label[j] = 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, "%s\\isolinux.tmp", temp_dir);
size = (size_t)ExtractISOFile(src_iso, isolinux_path.String[i], isolinux_tmp, FILE_ATTRIBUTE_NORMAL);
if (size == 0) {
uprintf(" Could not access %s", isolinux_path.String[i]);
} else {
buf = (char*)calloc(size, 1);
if (buf == NULL) break;
fd = fopen(isolinux_tmp, "rb");
if (fd == NULL) {
free(buf);
continue;
}
fread(buf, 1, size, fd);
fclose(fd);
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:\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);
}
_unlinkU(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) && ExtractEfiImgFiles(NULL)) {
img_report.has_efi = 0x80;
}
}
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)?0:1]);
ExtractISOFile(src_iso, path, tmp_sif, FILE_ATTRIBUTE_NORMAL);
tmp = get_token_data_file("OsLoadOptions", tmp_sif);
if (tmp != NULL) {
for (i=0; i<strlen(tmp); i++)
tmp[i] = (char)tolower(tmp[i]);
uprintf(" Checking txtsetup.sif:\n OsLoadOptions = %s", tmp);
img_report.uses_minint = (strstr(tmp, "/minint") != NULL);
}
_unlinkU(tmp_sif);
safe_free(tmp);
}
if (HAS_INSTALL_WIM(img_report)) {
img_report.install_wim_version = GetInstallWimVersion(src_iso);
}
if (img_report.has_grub2) {
// 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;
if ((GetTempPathU(sizeof(path), path) != 0) && (GetTempFileNameU(path, APPLICATION_NAME, 0, path) != 0)) {
size = (size_t)ExtractISOFile(src_iso, "boot/grub/i386-pc/normal.mod", path, FILE_ATTRIBUTE_NORMAL);
buf = (char*)calloc(size, 1);
fd = fopen(path, "rb");
if ((size == 0) || (buf == NULL) || (fd == NULL)) {
uprintf(" Could not read Grub version from 'boot/grub/i386-pc/normal.mod'");
} else {
fread(buf, 1, size, fd);
fclose(fd);
GetGrubVersion(buf, size);
}
free(buf);
_unlinkU(path);
}
if (img_report.grub2_version[0] != 0)
uprintf(" Detected Grub version: %s", img_report.grub2_version);
else {
uprintf(" Could not detect Grub version");
img_report.has_grub2 = FALSE;
}
}
StrArrayDestroy(&config_path);
StrArrayDestroy(&isolinux_path);
SendMessage(hMainDialog, UM_PROGRESS_EXIT, 0, 0);
} else {
// For Debian live ISOs, that only provide EFI boot files in a FAT efi.img
if (img_report.has_efi == 0x80)
ExtractEfiImgFiles(dest_dir);
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", path);
}
}
if (fd != NULL)
fclose(fd);
}
}
if (p_iso != NULL)
iso9660_close(p_iso);
if (p_udf != NULL)
udf_close(p_udf);
if ((r != 0) && (FormatStatus == 0))
FormatStatus = ERROR_SEVERITY_ERROR|FAC(FACILITY_STORAGE)|APPERR((scan_only?ERROR_ISO_SCAN:ERROR_ISO_EXTRACT));
return (r == 0);
}
int64_t ExtractISOFile(const char* iso, const char* iso_file, const char* dest_file, DWORD attributes)
{
size_t i, j;
ssize_t read_size;
int64_t file_length, extent_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:
p_iso = iso9660_open(iso);
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;
}
for (j = 0; j < p_statbuf->extents; j++) {
extent_length = p_statbuf->extsize[j];
for (i = 0; extent_length > 0; i++) {
memset(buf, 0, ISO_BLOCKSIZE);
lsn = p_statbuf->lsn[j] + (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(extent_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;
}
extent_length -= ISO_BLOCKSIZE;
r += ISO_BLOCKSIZE;
}
}
out:
safe_closehandle(file_handle);
if (p_statbuf != NULL)
safe_free(p_statbuf->rr.psz_symlink);
safe_free(p_statbuf);
if (p_udf_root != NULL)
udf_dirent_free(p_udf_root);
if (p_udf_file != NULL)
udf_dirent_free(p_udf_file);
if (p_iso != NULL)
iso9660_close(p_iso);
if (p_udf != NULL)
udf_close(p_udf);
return r;
}
uint32_t GetInstallWimVersion(const char* iso)
{
char *wim_path = NULL, *p, 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.install_wim_path[2]);
if (wim_path == NULL)
goto out;
// UDF indiscriminately accepts slash or backslash delimiters,
// but ISO-9660 requires slash
for (p = wim_path; *p != 0; p++)
if (*p == '\\') *p = '/';
// 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(iso);
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[0], 1) != ISO_BLOCKSIZE) {
uprintf("Error reading ISO-9660 file %s at LSN %d", wim_path, p_statbuf->lsn[0]);
goto out;
}
r = wim_header[3];
out:
if (p_statbuf != NULL)
safe_free(p_statbuf->rr.psz_symlink);
safe_free(p_statbuf);
if (p_udf_root != NULL)
udf_dirent_free(p_udf_root);
if (p_udf_file != NULL)
udf_dirent_free(p_udf_file);
if (p_iso != NULL)
iso9660_close(p_iso);
if (p_udf != NULL)
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 %d is not a divisor of %d", 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\n", 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;
}
/*
* Extract EFI bootloaders files from an ISO-9660 FAT img file into directory <dir>.
* If <dir> is NULL, returns TRUE if an EFI bootloader exists in the img.
* If <dir> is not NULL, returns TRUE if any if the bootloaders was properly written.
*/
BOOL ExtractEfiImgFiles(const char* dir)
{
BOOL ret = FALSE;
HANDLE handle;
DWORD size, file_size, written;
iso9660_t* p_iso = NULL;
iso9660_stat_t* p_statbuf = NULL;
iso9660_readfat_private* p_private = NULL;
libfat_sector_t s;
int32_t dc, c;
struct libfat_filesystem *lf_fs = NULL;
struct libfat_direntry direntry;
char name[12] = { 0 };
char path[64];
int i, j, k;
void* buf;
if ((image_path == NULL) || !HAS_EFI_IMG(img_report))
return FALSE;
p_iso = iso9660_open(image_path);
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\n", 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[0]; // Image should be small enough not to use multiextents
p_private->sec_start = 0;
// Populate our intial 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\n", 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++) {
// Sanity check in case the EFI forum comes up with a 'bootmips64.efi' or something...
if (strlen(efi_bootname[i]) > 12) {
uprintf("Internal error: FAT 8.3");
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 (dir == NULL) {
if (!ret)
uprintf(" Detected EFI bootloader(s) (from '%s'):", img_report.efi_img_path);
uprintf(" ● '%s'", efi_bootname[i]);
ret = TRUE;
} else {
file_size = direntry.entry[28] + (direntry.entry[29] << 8) + (direntry.entry[30] << 16) +
(direntry.entry[31] << 24);
// Sanity check
if (file_size > 64 * MB) {
uprintf("Warning: File size is larger than 64 MB => not extracted");
continue;
}
static_sprintf(path, "%s\\efi", dir);
if (!CreateDirectoryA(path, 0) && (GetLastError() != ERROR_ALREADY_EXISTS)) {
uprintf("Could not create directory '%s': %s\n", path, WindowsErrorString());
continue;
}
static_strcat(path, "\\boot");
if (!CreateDirectoryA(path, 0) && (GetLastError() != ERROR_ALREADY_EXISTS)) {
uprintf("Could not create directory '%s': %s\n", path, WindowsErrorString());
continue;
}
static_strcat(path, "\\");
static_strcat(path, efi_bootname[i]);
uprintf("Extracting: %s (from '%s', %s)", path, img_report.efi_img_path,
SizeToHumanReadable(file_size, FALSE, FALSE));
handle = CreateFileA(path, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ,
NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if (handle == INVALID_HANDLE_VALUE) {
uprintf("Unable to create '%s': %s", path, WindowsErrorString());
continue;
}
written = 0;
s = libfat_clustertosector(lf_fs, c);
while ((s != 0) && (s < 0xFFFFFFFFULL) && (written < file_size)) {
buf = libfat_get_sector(lf_fs, s);
size = MIN(LIBFAT_SECTOR_SIZE, file_size - written);
if (!WriteFileWithRetry(handle, buf, size, &size, WRITE_RETRIES) ||
(size != MIN(LIBFAT_SECTOR_SIZE, file_size - written))) {
uprintf("Error writing '%s': %s", path, WindowsErrorString());
CloseHandle(handle);
continue;
}
written += size;
s = libfat_nextsector(lf_fs, s);
}
CloseHandle(handle);
ret = TRUE;
}
}
}
out:
if (lf_fs != NULL)
libfat_close(lf_fs);
if (p_statbuf != NULL)
safe_free(p_statbuf->rr.psz_symlink);
safe_free(p_statbuf);
safe_free(p_private);
if (p_iso != NULL)
iso9660_close(p_iso);
return ret;
}
// VirtDisk API Prototypes - Only available for Windows 8 or later
PF_TYPE_DECL(WINAPI, DWORD, OpenVirtualDisk, (PVIRTUAL_STORAGE_TYPE, PCWSTR,
VIRTUAL_DISK_ACCESS_MASK, OPEN_VIRTUAL_DISK_FLAG, POPEN_VIRTUAL_DISK_PARAMETERS, PHANDLE));
PF_TYPE_DECL(WINAPI, DWORD, AttachVirtualDisk, (HANDLE, PSECURITY_DESCRIPTOR,
ATTACH_VIRTUAL_DISK_FLAG, ULONG, PATTACH_VIRTUAL_DISK_PARAMETERS, LPOVERLAPPED));
PF_TYPE_DECL(WINAPI, DWORD, DetachVirtualDisk, (HANDLE, DETACH_VIRTUAL_DISK_FLAG, ULONG));
PF_TYPE_DECL(WINAPI, DWORD, GetVirtualDiskPhysicalPath, (HANDLE, PULONG, PWSTR));
static char physical_path[128] = "";
static HANDLE mounted_handle = INVALID_HANDLE_VALUE;
char* MountISO(const char* path)
{
VIRTUAL_STORAGE_TYPE vtype = { 1, VIRTUAL_STORAGE_TYPE_VENDOR_MICROSOFT };
ATTACH_VIRTUAL_DISK_PARAMETERS vparams = {0};
DWORD r;
wchar_t wtmp[128];
ULONG size = ARRAYSIZE(wtmp);
wconvert(path);
char* ret = NULL;
PF_INIT_OR_OUT(OpenVirtualDisk, VirtDisk);
PF_INIT_OR_OUT(AttachVirtualDisk, VirtDisk);
PF_INIT_OR_OUT(GetVirtualDiskPhysicalPath, VirtDisk);
if ((mounted_handle != NULL) && (mounted_handle != INVALID_HANDLE_VALUE))
UnMountISO();
r = pfOpenVirtualDisk(&vtype, wpath, VIRTUAL_DISK_ACCESS_READ | VIRTUAL_DISK_ACCESS_GET_INFO,
OPEN_VIRTUAL_DISK_FLAG_NONE, NULL, &mounted_handle);
if (r != ERROR_SUCCESS) {
SetLastError(r);
uprintf("Could not open ISO '%s': %s", path, WindowsErrorString());
goto out;
}
vparams.Version = ATTACH_VIRTUAL_DISK_VERSION_1;
r = pfAttachVirtualDisk(mounted_handle, NULL, ATTACH_VIRTUAL_DISK_FLAG_READ_ONLY |
ATTACH_VIRTUAL_DISK_FLAG_NO_DRIVE_LETTER, 0, &vparams, NULL);
if (r != ERROR_SUCCESS) {
SetLastError(r);
uprintf("Could not mount ISO '%s': %s", path, WindowsErrorString());
goto out;
}
r = pfGetVirtualDiskPhysicalPath(mounted_handle, &size, wtmp);
if (r != ERROR_SUCCESS) {
SetLastError(r);
uprintf("Could not obtain physical path for mounted ISO '%s': %s", path, WindowsErrorString());
goto out;
}
wchar_to_utf8_no_alloc(wtmp, physical_path, sizeof(physical_path));
ret = physical_path;
out:
if (ret == NULL)
UnMountISO();
wfree(path);
return ret;
}
void UnMountISO(void)
{
PF_INIT_OR_OUT(DetachVirtualDisk, VirtDisk);
if ((mounted_handle == NULL) || (mounted_handle == INVALID_HANDLE_VALUE))
goto out;
pfDetachVirtualDisk(mounted_handle, DETACH_VIRTUAL_DISK_FLAG_NONE, 0);
safe_closehandle(mounted_handle);
out:
physical_path[0] = 0;
}
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