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added SDK support, better validation/sniffing

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git-svn-id: https://profuse.googlecode.com/svn/branches/v2@381 aa027e90-d47c-11dd-86d7-074df07e0730
This commit is contained in:
ksherlock
2011-03-09 05:02:04 +00:00
parent 5f893f78fc
commit 32bb5d79b9
12 changed files with 491 additions and 111 deletions
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Device/DavexDiskImage.cpp
+37 -31
View File
@@ -47,42 +47,48 @@ DavexDiskImage::~DavexDiskImage()
// scan and update usedBlocks?
}
void DavexDiskImage::Validate(MappedFile *f)
bool DavexDiskImage::Validate(MappedFile *f, const std::nothrow_t &)
{
#undef __METHOD__
#define __METHOD__ "DavexDiskImage::Validate"
size_t size = f->length();
const void * data = f->address();
unsigned blocks = (size / 512) - 1;
if (size < 512) return false;
if (size % 512) return false;
// identity.
if (std::memcmp(data, IdentityCheck, 16))
return false;
// file format.
if (Read8(data, 0x10) != 0)
return false;
// total blocks
if (Read32(data, 33) != blocks)
return false;
// file number -- must be 1
if (Read8(data, 64) != 1)
return false;
return true;
}
bool DavexDiskImage::Validate(MappedFile *f)
{
#undef __METHOD__
#define __METHOD__ "DavexDiskImage::Validate"
size_t size = f->length();
const void * data = f->address();
bool ok = false;
unsigned blocks = (size / 512) - 1;
do {
if (size < 512) break;
if (size % 512) break;
// identity.
if (std::memcmp(data, IdentityCheck, 16))
break;
// file format.
if (Read8(data, 0x10) != 0)
break;
// total blocks
if (Read32(data, 33) != blocks)
break;
// file number -- must be 1
if (Read8(data, 64) != 1)
break;
ok = true;
} while (false);
if (!ok)
if (!Validate(f, std::nothrow))
throw Exception(__METHOD__ ": Invalid file format.");
return true;
}
BlockDevicePointer DavexDiskImage::Open(MappedFile *file)