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Fix a bug caused by sscanf trashing memory. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@280 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
bbahnsen 2006-05-25 18:18:27 +00:00
parent fbf910a5a0
commit 8d3adb745f
1 changed files with 27 additions and 15 deletions
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28
Tools/Source/TianoTools/GenDepex/GenDepex.c
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@ -690,22 +690,34 @@ Returns:
Ptrx++; Ptrx++;
} }
{
int byte_index;
// This is an array of UINT32s. sscanf will trash memory
// if you try to read into a UINT8 with a %x formatter.
UINT32 Guid_Data4[8];
ArgCountParsed = sscanf ( ArgCountParsed = sscanf (
Ptrx, Ptrx,
"%x, %x, %x, { %x, %x, %x, %x, %x, %x, %x, %x }", "%x, %x, %x, { %x, %x, %x, %x, %x, %x, %x, %x }",
&Guid.Data1, &Guid.Data1,
&Guid.Data2, &Guid.Data2,
&Guid.Data3, &Guid.Data3,
&Guid.Data4[0], &Guid_Data4[0],
&Guid.Data4[1], &Guid_Data4[1],
&Guid.Data4[2], &Guid_Data4[2],
&Guid.Data4[3], &Guid_Data4[3],
&Guid.Data4[4], &Guid_Data4[4],
&Guid.Data4[5], &Guid_Data4[5],
&Guid.Data4[6], &Guid_Data4[6],
&Guid.Data4[7] &Guid_Data4[7]
); );
// Now we can copy the 32 bit ints into the GUID.
for (byte_index=0; byte_index<8; byte_index++) {
Guid.Data4[byte_index] = (UINT8) Guid_Data4[byte_index];
}
}
if (ArgCountParsed != 11) { if (ArgCountParsed != 11) {
printf ("We have found an illegal GUID\n"); printf ("We have found an illegal GUID\n");
printf ("Fix your depex\n"); printf ("Fix your depex\n");