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[core] add SHA-256 validation DB for downloadable content

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* Downloadable content will now be indicating, in the log, whether it can be trusted with ✓ (validated) or ✗ (caution)
* Of course this validation only applies for files we know of, i.e. the downloadable content that existed at the time the DB was
  created. So, if Syslinux 8.x gets released tomorrow and we put it on our server, you'll get an ✗ regardless of its integrity.
* Closes #758
This commit is contained in:
Pete Batard 2016-05-25 12:20:20 +01:00
parent 04d6ac0cdd
commit 790aacd49a
10 changed files with 201 additions and 43 deletions
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10
src/format.c
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@ -1002,7 +1002,7 @@ static BOOL WriteSBR(HANDLE hPhysicalDrive)
switch (bt) {
case BT_GRUB4DOS:
uprintf("Writing Grub4Dos SBR...");
uprintf("Writing Grub4Dos SBR");
buf = GetResource(hMainInstance, MAKEINTRESOURCEA(IDR_GR_GRUB_GRLDR_MBR), _RT_RCDATA, "grldr.mbr", &size, FALSE);
if ((buf == NULL) || (size <= mbr_size)) {
uprintf("grldr.mbr is either not present or too small");
@ -1013,11 +1013,12 @@ static BOOL WriteSBR(HANDLE hPhysicalDrive)
break;
case BT_GRUB2:
if (grub2_buf != NULL) {
uprintf("Writing Grub 2.0 SBR (from download)...");
uprintf("Writing Grub 2.0 SBR (from download) %s",
IsBufferInDB(grub2_buf, grub2_len)?"✓":"✗");
buf = grub2_buf;
size = (DWORD)grub2_len;
} else {
uprintf("Writing Grub 2.0 SBR (from embedded)...");
uprintf("Writing Grub 2.0 SBR (from embedded)");
buf = GetResource(hMainInstance, MAKEINTRESOURCEA(IDR_GR_GRUB2_CORE_IMG), _RT_RCDATA, "core.img", &size, FALSE);
if (buf == NULL) {
uprintf("Could not access core.img");
@ -1898,8 +1899,9 @@ DWORD WINAPI FormatThread(void* param)
}
} else if (bt == BT_GRUB4DOS) {
grub4dos_dst[0] = drive_name[0];
uprintf("Installing: %s (Grub4DOS loader)\n", grub4dos_dst);
IGNORE_RETVAL(_chdirU(app_dir));
uprintf("Installing: %s (Grub4DOS loader) %s\n", grub4dos_dst,
IsFileInDB(FILES_DIR "\\grub4dos-" GRUB4DOS_VERSION "\\grldr")?"✓":"✗");
if (!CopyFileU(FILES_DIR "\\grub4dos-" GRUB4DOS_VERSION "\\grldr", grub4dos_dst, FALSE))
uprintf("Failed to copy file: %s", WindowsErrorString());
} else if ((bt == BT_ISO) && (image_path != NULL)) {