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add name collision test

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git-svn-id: http://encfs.googlecode.com/svn/trunk@79 db9cf616-1c43-0410-9cb8-a902689de0d6
This commit is contained in:
Valient Gough 2012-04-26 02:30:08 +00:00
parent 5d99db5376
commit 67821fb209
1 changed files with 27 additions and 1 deletions
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28
encfs/test.cpp
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@ -47,6 +47,8 @@
#endif
#endif
#include <tr1/unordered_set>
using namespace std;
using namespace rel;
@ -106,7 +108,8 @@ int checkErrorPropogation( const shared_ptr<Cipher> &cipher,
const char TEST_ROOTDIR[] = "/foo";
static
bool testNameCoding( DirNode &dirNode, bool verbose )
bool testNameCoding( DirNode &dirNode, bool verbose,
bool collisionTest = false )
{
// encrypt a name
const char *name[] = {
@ -161,6 +164,29 @@ bool testNameCoding( DirNode &dirNode, bool verbose )
orig++;
}
if (collisionTest)
{
if (verbose)
cerr << "Checking for name collections, this will take a while..\n";
// check for collision rate
char buf[64];
tr1::unordered_set<string> encryptedNames;
for (long i=0; i < 10000000; i++)
{
snprintf(buf, sizeof(buf), "%li", i);
string encName = dirNode.relativeCipherPath( buf );
// simulate a case-insisitive filesystem..
std::transform(encName.begin(), encName.end(), encName.begin(),
::toupper);
if (encryptedNames.insert(encName).second == false) {
cerr << "collision detected after " << i << " iterations";
break;
}
}
cerr << "NO collisions detected";
}
return true;
}