LIB_EXPORT
rc_t CC
XFS_InitKKey_ZHR (
const char * EncPass,
const char * EncType,
struct KKey * Key
)
{
rc_t RCt;
KKeyType Type;
RCt = 0;
Type = kkeyNone;
XFS_CAN ( EncPass )
XFS_CAN ( Key )
RCt = XFS_KeyType_ZHR ( EncType, & Type );
if ( RCt == 0 ) {
RCt = KKeyInitRead (
Key,
Type,
EncPass,
string_size ( EncPass )
);
}
return RCt;
} /* XFS_InitKey_ZHR () */
rc_t ArchiveAndEncrypt(KDirectory* wd, const char* inpath, const char* outpath, const char* passwd)
{
const KDirectory* d;
rc_t rc = KDirectoryOpenDirRead (wd, &d, false, "%s", inpath);
if (rc == 0)
{
const KFile* infile;
rc_t rc2;
rc = KDirectoryOpenTocFileRead (d, &infile, 4, NULL, NULL, NULL);
if (rc == 0)
{
KFile* outfile;
/* if the file exists, add write access */
KDirectorySetAccess( wd, false, 0600, 0777, "%s", outpath );
rc = KDirectoryCreateFile(wd, &outfile, false, 0600, kcmCreate|kcmInit, "%s", outpath);
if ( rc == 0 )
{
KFile* enc_outfile;
KKey key;
rc = KKeyInitRead(&key, kkeyAES256, passwd, string_measure(passwd, NULL));
if ( rc == 0 )
rc = KEncFileMakeWrite(&enc_outfile, outfile, &key);
if (rc == 0)
rc = copy_file(infile, enc_outfile);
rc2 = KFileRelease(outfile);
if (rc == 0)
rc = rc2;
/* remove write access */
rc2 = KDirectorySetAccess( wd, false, 0400, 0777, "%s", outpath );
if (rc == 0)
rc = rc2;
rc2 = KFileRelease(enc_outfile);
if (rc == 0)
rc = rc2;
}
rc2 = KFileRelease(infile);
if (rc == 0)
rc = rc2;
}
rc2 = KDirectoryRelease(d);
if (rc == 0)
rc = rc2;
}
return rc;
}
rc_t OpenDatabase(KKeyRing* self)
{
rc_t rc;
const KFile* enc_infile;
assert(self);
rc = KDirectoryOpenFileRead(self->wd, &enc_infile, "%s", self->path);
if ( rc == 0)
{
rc_t rc2;
const KFile* infile;
KKey key;
rc = KKeyInitRead(&key, kkeyAES256, self->passwd, string_measure(self->passwd, NULL));
if ( rc == 0 )
{
rc = KEncFileMakeRead (&infile, enc_infile, &key);
if (rc == 0)
{
const KDirectory* arc;
rc = KDirectoryOpenArcDirRead_silent_preopened(self->wd, &arc, true, "/keyring", tocKFile, (void*)infile, KArcParseSRA, NULL, NULL);
if (rc == 0)
{
/* Hack: we violate the KDirectory object interface in order for VDBManagerMakeUpdate to succeed,
since it would refuse to open a read-only dir (i.e. archive);
We will only read from the object, though.
*/
((KDirectory*)arc)->read_only = false;
rc = KeyRingDatabaseLoad(self->data, arc, "/keyring");
rc2 = KDirectoryRelease(arc);
if (rc == 0)
rc = rc2;
}
rc2 = KFileRelease(infile);
if (rc == 0)
rc = rc2;
}
}
rc2 = KFileRelease(enc_infile);
if (rc == 0)
rc = rc2;
}
return rc;
}
static
rc_t StartFileSystem (const char * src, const char * dst)
{
VFSManager * vmanager;
rc_t rc;
rc = VFSManagerMake (&vmanager);
if (rc)
LOGERR (klogErr, rc, "Failed to open file system");
else
{
rc = VFSManagerGetKryptoPassword (vmanager, Password, sizeof Password,
&PasswordSize);
if (rc != 0)
LOGERR (klogErr, rc, "unable to obtain a password");
else
{
rc = KKeyInitRead (&Key, kkeyAES128, Password, PasswordSize);
if (rc)
LOGERR (klogErr, rc, "Unable to make encryption/decryption key");
else
{
KDirectory * cwd;
rc = VFSManagerGetCWD (vmanager, &cwd);
if (rc)
LOGERR (klogInt, rc, "unable to access current directory");
else
{
rc = Start (cwd, src, dst);
KDirectoryRelease (cwd);
}
}
}
VFSManagerRelease (vmanager);
}
return rc;
}
/* not KDB specific - just uses vfs/krypto/kfs objects */
static
rc_t KDBOpenFileAsDirectory (const KDirectory * dir,
const char * path,
const KDirectory ** pdir,
uint32_t rcobj)
{
const KFile * file;
const KFile * f;
const KDirectory * ldir;
bool encrypted = false;
rc_t rc;
*pdir = NULL;
rc = KDirectoryOpenFileRead (dir, &file, path);
if (rc == 0)
{
rc = KFileRandomAccess(file);
if (rc)
rc = RC (rcDB, rcMgr, rcOpening, rcobj, rcUnsupported);
else
{
size_t tz;
char tbuff [4096];
char pbuff [4096 + 1];
rc = KFileReadAll (file, 0, tbuff, sizeof tbuff, &tz);
if (rc == 0)
{
if (KFileIsEnc (tbuff, tz) == 0)
{
encrypted = true;
rc = KDBOpenFileGetPassword (pbuff, sizeof (pbuff) - 1);
if (rc == 0)
{
KKey key;
rc = KKeyInitRead (&key, kkeyAES128, pbuff, string_size (pbuff));
if (rc == 0)
{
rc = KEncFileMakeRead (&f, file, &key);
if (rc == 0)
{
/* KEncFileMakeRead adds a reference */
KFileRelease (file);
file = f;
rc = KFileReadAll (file, 0, tbuff, sizeof tbuff, &tz);
}
}
}
}
else if (KFileIsWGAEnc (tbuff, tz) == 0)
{
encrypted = true;
rc = KDBOpenFileGetPassword (pbuff, sizeof (pbuff) - 1);
if (rc == 0)
{
rc = KFileMakeWGAEncRead (&f, file, pbuff, string_size (pbuff));
if (rc == 0)
{
/* KFileMakeWGAEncRead adds a reference */
KFileRelease (file);
file = f;
rc = KFileReadAll (file, 0, tbuff, sizeof tbuff, &tz);
}
}
}
/* else not a handled encryption or unencrypted: we can't distinguish too much */
if (rc == 0)
{
if (KFileIsSRA (tbuff, tz) == 0)
{
rc = KDirectoryOpenSraArchiveReadUnbounded_silent_preopened (dir,
&ldir,
false,
file,
path);
}
else
{
rc = KDirectoryOpenTarArchiveRead_silent_preopened (dir, &ldir, false,
file, path);
}
/* not an archive type we handle or a bad archive */
if (rc)
{
if (encrypted)
rc = RC ( rcDB, rcMgr, rcOpening, rcEncryptionKey, rcIncorrect );
else
rc = RC ( rcDB, rcMgr, rcOpening, rcPath, rcIncorrect );
}
else
{
/*
* release our ownership of the KFile that but archive will
* keep theirs
*/
KFileRelease (file);
*pdir = ldir;
return 0;
}
}
}
}
KFileRelease (file);
}
return rc;
}
