//---------------------------------------------------------------------
ElementPtr PeerContactProfile::getPrivateProfile() const
{
AutoRecursiveLock lock(mLock);
if (!mDocument) return ElementPtr();
if (!hasContactProfileSecret()) return ElementPtr();
try {
ElementPtr contactProfileElement = getContactProfileElement();
if (!contactProfileElement) return ElementPtr();
ElementPtr privateElement = contactProfileElement->findFirstChildElementChecked("private");
ElementPtr profileElement = privateElement->findFirstChildElementChecked("encryptedProfile");
ElementPtr saltElement = privateElement->findFirstChildElementChecked("salt");
String saltAsBase64 = saltElement->getText(true);
SecureByteBlock output;
decryptAndNulTerminateFromBase64(
"profile",
mContactProfileSecret,
saltAsBase64,
profileElement->getText(true),
output
);
String parseData = (CSTR)((const BYTE *)output);
DocumentPtr temp = Document::create();
temp->parse(parseData);
ElementPtr result = temp->findFirstChildElementChecked("profile");
result->orphan();
return result;
} catch (zsLib::XML::Exceptions::CheckFailed &) {
}
return ElementPtr();
}
//---------------------------------------------------------------------
bool PeerContactProfile::usesContactProfileSecret(const char *contactProfileSecret)
{
AutoRecursiveLock lock(mLock);
if (NULL == contactProfileSecret) return false;
if (!mDocument) return false;
try {
ElementPtr contactProfileElement = getContactProfileElement();
if (!contactProfileElement) return false;
ElementPtr proofElement = contactProfileElement->findFirstChildElementChecked("private")->findFirstChildElementChecked("proof");
String proofAsBase64 = proofElement->getText(true);
SecureByteBlock proofHash;
convertFromBase64(proofAsBase64, proofHash);
SecureByteBlock calculatedProofHash(32);
if (calculatedProofHash.size() != proofHash.size()) return false;
SHA256 shaProof;
shaProof.Update((const BYTE *)"proof:", strlen("proof:"));
shaProof.Update((const BYTE *)contactProfileSecret, strlen(contactProfileSecret));
shaProof.Final(calculatedProofHash);
if (0 != memcmp(calculatedProofHash, proofHash, proofHash.size())) return false;
// this is the secret and it is verified
mContactProfileSecret = contactProfileSecret;
} catch (zsLib::XML::Exceptions::CheckFailed &) {
return false;
}
return true;
}
//---------------------------------------------------------------------
IPeerFilePublicPtr PeerContactProfile::getPeerFilePublic() const
{
AutoRecursiveLock lock(mLock);
PeerFilesPtr outer = mPeerFiles.lock();
if (outer) {
IPeerFilePublicPtr publicPeer = outer->getPublic();
if (publicPeer) return publicPeer;
}
if (!mDocument) return IPeerFilePublicPtr();
if (!hasContactProfileSecret()) return IPeerFilePublicPtr();
try {
ElementPtr contactProfileElement = getContactProfileElement();
if (!contactProfileElement) return IPeerFilePublicPtr();
ElementPtr privateElement = contactProfileElement->findFirstChildElementChecked("private");
ElementPtr encryptedPeerElement = privateElement->findFirstChildElementChecked("encryptedPeer");
ElementPtr saltElement = privateElement->findFirstChildElementChecked("salt");
String saltAsBase64 = saltElement->getText(true);
SecureByteBlock output;
decryptAndNulTerminateFromBase64(
"peer",
mContactProfileSecret,
saltAsBase64,
encryptedPeerElement->getText(true),
output
);
String parseData = (CSTR)((const BYTE *)output);
DocumentPtr temp = Document::create();
temp->parse(parseData);
ElementPtr result = temp->findFirstChildElementChecked("peer");
result->orphan();
PeerFilePublicPtr publicPeer = PeerFilePublic::loadFromXML(result);
return publicPeer;
} catch (zsLib::XML::Exceptions::CheckFailed &) {
}
return IPeerFilePublicPtr();
}
//---------------------------------------------------------------------
void PeerContactProfile::internalTemporaryGetContactProfileSecret()
{
if (!mDocument) return;
try {
ElementPtr contactProfileElement = getContactProfileElement();
if (!contactProfileElement) return;
ElementPtr privateElement = contactProfileElement->findFirstChildElementChecked("private");
ElementPtr contactProfileSecretElement = privateElement->findFirstChildElementChecked("contactProfileSecret");
String cotactProfileSecret = contactProfileSecretElement->getText();
if (cotactProfileSecret.isEmpty()) return;
mContactProfileSecret = cotactProfileSecret;
} catch (zsLib::XML::Exceptions::CheckFailed &) {
}
}
//---------------------------------------------------------------------
bool PeerContactProfile::setPrivateProfile(ElementPtr newProfileElement)
{
AutoRecursiveLock lock(mLock);
if (!mDocument) return false;
PeerFilesPtr outer;
IPeerFilePrivatePtr privatePeer;
if (!isExternal()) {
outer = mPeerFiles.lock();
if (!outer) return false;
privatePeer = outer->getPrivate();
if (!privatePeer) return false;
}
try {
ElementPtr contactProfileElement = getContactProfileElement();
if (!contactProfileElement) return false;
ElementPtr privateElement = contactProfileElement->findFirstChildElementChecked("private");
ElementPtr encryptedProfileElement = privateElement->findFirstChildElement("encryptedProfile");
ElementPtr saltElement = privateElement->findFirstChildElementChecked("salt");
String saltAsBase64 = saltElement->getText(true);
if (!newProfileElement) {
// erasing the profile element to clean
newProfileElement = Element::create();
newProfileElement->setValue("profile");
}
DocumentPtr tempDoc = Document::create();
tempDoc->adoptAsLastChild(newProfileElement->clone());
// write out the new value
boost::shared_array<char> output = tempDoc->write();
// encrypt it
String encryptedProfileAsBase64 = encryptToBase64(
"profile",
mContactProfileSecret.c_str(),
saltAsBase64,
(const BYTE *)(output.get()),
strlen(output.get())
);
ElementPtr tempNewEncryptedProfileElement = Element::create();
tempNewEncryptedProfileElement->setValue("encryptedProfile");
TextPtr encryptedProfileText = Text::create();
encryptedProfileText->setValue(encryptedProfileAsBase64);
tempNewEncryptedProfileElement->adoptAsLastChild(encryptedProfileText);
if (encryptedProfileElement) {
encryptedProfileElement->adoptAsNextSibling(tempNewEncryptedProfileElement);
encryptedProfileElement->orphan();
} else {
privateElement->adoptAsLastChild(tempNewEncryptedProfileElement);
}
// upgrade the document version number
UINT version = getVersionNumber();
++version;
contactProfileElement->setAttribute("version", Stringize<UINT>(version).string());
if (!isExternal()) {
// now this this must be signed
privatePeer->signElement(contactProfileElement);
}
} catch (zsLib::XML::Exceptions::CheckFailed &) {
return false;
}
return true;
}
