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don't return error decrypting for optimistic public keys

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This commit is contained in:
Stephen Birarda 2017-07-25 13:43:30 -07:00
parent 2d0c5ff37a
commit e9845784d5
2 changed files with 35 additions and 14 deletions
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34
domain-server/src/DomainGatekeeper.cpp
View file

@ -385,7 +385,7 @@ SharedNodePointer DomainGatekeeper::processAgentConnectRequest(const NodeConnect
// user is attempting to prove their identity to us, but we don't have enough information
sendConnectionTokenPacket(username, nodeConnection.senderSockAddr);
// ask for their public key right now to make sure we have it
requestUserPublicKey(username);
requestUserPublicKey(username, true);
getGroupMemberships(username); // optimistically get started on group memberships
#ifdef WANT_DEBUG
qDebug() << "stalling login because we have no username-signature:" << username;
@ -521,7 +521,10 @@ bool DomainGatekeeper::verifyUserSignature(const QString& username,
const HifiSockAddr& senderSockAddr) {
// it's possible this user can be allowed to connect, but we need to check their username signature
auto lowerUsername = username.toLower();
QByteArray publicKeyArray = _userPublicKeys.value(lowerUsername);
KeyFlagPair publicKeyPair = _userPublicKeys.value(lowerUsername);
QByteArray publicKeyArray = publicKeyPair.first;
bool isOptimisticKey = publicKeyPair.second;
const QUuid& connectionToken = _connectionTokenHash.value(lowerUsername);
@ -555,10 +558,16 @@ bool DomainGatekeeper::verifyUserSignature(const QString& username,
return true;
} else {
if (!senderSockAddr.isNull()) {
qDebug() << "Error decrypting username signature for " << username << "- denying connection.";
// we only send back a LoginError if this wasn't an "optimistic" key
// (a key that we hoped would work but is probably stale)
if (!senderSockAddr.isNull() && !isOptimisticKey) {
qDebug() << "Error decrypting username signature for" << username << "- denying connection.";
sendConnectionDeniedPacket("Error decrypting username signature.", senderSockAddr,
DomainHandler::ConnectionRefusedReason::LoginError);
} else if (!senderSockAddr.isNull()) {
qDebug() << "Error decrypting username signature for" << username << "with optimisitic key -"
<< "re-requesting public key and delaying connection";
}
// free up the public key, we don't need it anymore
@ -604,7 +613,7 @@ bool DomainGatekeeper::isWithinMaxCapacity() {
return true;
}
void DomainGatekeeper::requestUserPublicKey(const QString& username) {
void DomainGatekeeper::requestUserPublicKey(const QString& username, bool isOptimistic) {
// don't request public keys for the standard psuedo-account-names
if (NodePermissions::standardNames.contains(username, Qt::CaseInsensitive)) {
return;
@ -615,7 +624,7 @@ void DomainGatekeeper::requestUserPublicKey(const QString& username) {
// public-key request for this username is already flight, not rerequesting
return;
}
_inFlightPublicKeyRequests += lowerUsername;
_inFlightPublicKeyRequests.insert(lowerUsername, isOptimistic);
// even if we have a public key for them right now, request a new one in case it has just changed
JSONCallbackParameters callbackParams;
@ -627,7 +636,7 @@ void DomainGatekeeper::requestUserPublicKey(const QString& username) {
const QString USER_PUBLIC_KEY_PATH = "api/v1/users/%1/public_key";
qDebug() << "Requesting public key for user" << username;
qDebug().nospace() << "Requesting " << (isOptimistic ? "optimistic " : " ") << "public key for user " << username;
DependencyManager::get<AccountManager>()->sendRequest(USER_PUBLIC_KEY_PATH.arg(username),
AccountManagerAuth::None,
@ -649,18 +658,21 @@ void DomainGatekeeper::publicKeyJSONCallback(QNetworkReply& requestReply) {
QJsonObject jsonObject = QJsonDocument::fromJson(requestReply.readAll()).object();
QString username = extractUsernameFromPublicKeyRequest(requestReply);
bool isOptimisticKey = _inFlightPublicKeyRequests.take(username);
if (jsonObject["status"].toString() == "success" && !username.isEmpty()) {
// pull the public key as a QByteArray from this response
const QString JSON_DATA_KEY = "data";
const QString JSON_PUBLIC_KEY_KEY = "public_key";
qDebug() << "Extracted public key for" << username.toLower();
qDebug().nospace() << "Extracted " << (isOptimisticKey ? "optimistic " : " ") << "public key for " << username.toLower();
_userPublicKeys[username.toLower()] =
QByteArray::fromBase64(jsonObject[JSON_DATA_KEY].toObject()[JSON_PUBLIC_KEY_KEY].toString().toUtf8());
{
QByteArray::fromBase64(jsonObject[JSON_DATA_KEY].toObject()[JSON_PUBLIC_KEY_KEY].toString().toUtf8()),
isOptimisticKey
};
}
_inFlightPublicKeyRequests.remove(username);
}
void DomainGatekeeper::publicKeyJSONErrorCallback(QNetworkReply& requestReply) {

15
domain-server/src/DomainGatekeeper.h
View file

@ -91,7 +91,7 @@ private:
void pingPunchForConnectingPeer(const SharedNetworkPeer& peer);
void requestUserPublicKey(const QString& username);
void requestUserPublicKey(const QString& username, bool isOptimistic = false);
DomainServer* _server;
@ -100,8 +100,17 @@ private:
QHash<QUuid, SharedNetworkPeer> _icePeers;
QHash<QString, QUuid> _connectionTokenHash;
QHash<QString, QByteArray> _userPublicKeys;
QSet<QString> _inFlightPublicKeyRequests; // keep track of which we've already asked for
// the word "optimistic" below is used for keys that we request during user connection before the user has
// had a change to upload a new public key
// we don't send back user signature decryption errors for those keys so that there isn't a thrasing of key re-generation
// and connection refusal
using KeyFlagPair = QPair<QByteArray, bool>;
QHash<QString, KeyFlagPair> _userPublicKeys; // keep track of keys and flag them as optimistic or not
QHash<QString, bool> _inFlightPublicKeyRequests; // keep track of keys we've asked for (and if it was optimistic)
QSet<QString> _domainOwnerFriends; // keep track of friends of the domain owner
QSet<QString> _inFlightGroupMembershipsRequests; // keep track of which we've already asked for