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fix review comments

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Signed-off-by: Matthieu Gallien <matthieu.gallien@nextcloud.com>
This commit is contained in:
Matthieu Gallien 2021-07-01 14:07:09 +02:00
parent 698d5f19ba
commit 2bc72592a0
2 changed files with 40 additions and 46 deletions
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50
src/libsync/clientsideencryption.cpp
View file

@ -34,7 +34,6 @@
#include <QUuid>
#include <QScopeGuard>
#include <QRandomGenerator>
#include <QSslCertificateExtension>
#include <qt5keychain/keychain.h>
#include "common/utility.h"
@ -239,6 +238,11 @@ namespace {
return _pkey;
}
operator EVP_PKEY*() const
{
return _pkey;
}
private:
Q_DISABLE_COPY(PKey)
@ -277,6 +281,11 @@ namespace {
return _certificate;
}
operator X509*() const
{
return _certificate;
}
private:
Q_DISABLE_COPY(X509Certificate)
@ -867,19 +876,18 @@ bool ClientSideEncryption::checkPublicKeyValidity(const AccountPtr &account) con
return true;
}
bool ClientSideEncryption::checkServerPublicKeyValidity(const QString &serverPublicKeyString) const
bool ClientSideEncryption::checkServerPublicKeyValidity(const QByteArray &serverPublicKeyString) const
{
Bio serverPublicKeyBio;
auto serverPublicKeyPem = serverPublicKeyString.toLatin1();
BIO_write(serverPublicKeyBio, serverPublicKeyPem.constData(), serverPublicKeyPem.size());
auto serverPublicKey = PKey::readPrivateKey(serverPublicKeyBio);
BIO_write(serverPublicKeyBio, serverPublicKeyString.constData(), serverPublicKeyString.size());
const auto serverPublicKey = PKey::readPrivateKey(serverPublicKeyBio);
Bio certificateBio;
auto certificatePem = _certificate.toPem();
const auto certificatePem = _certificate.toPem();
BIO_write(certificateBio, certificatePem.constData(), certificatePem.size());
auto x509Certificate = X509Certificate::readCertificate(certificateBio);
const auto x509Certificate = X509Certificate::readCertificate(certificateBio);
if (!x509Certificate) {
qCInfo(lcCse()) << "Client certificate is invalid. Impossible to check it against the server public key";
qCInfo(lcCse()) << "Client certificate is invalid. Could not check it against the server public key";
return false;
}
@ -1176,20 +1184,8 @@ void ClientSideEncryption::generateCSR(const AccountPtr &account, EVP_PKEY *keyP
if (retCode == 200) {
QString cert = json.object().value("ocs").toObject().value("data").toObject().value("public-key").toString();
_certificate = QSslCertificate(cert.toLocal8Bit(), QSsl::Pem);
qCDebug(lcCse()) << cert;
qCDebug(lcCse()) << _certificate.issuerDisplayName() << _certificate.issuerInfoAttributes();
for (const auto &attribut : _certificate.issuerInfoAttributes()) {
qCDebug(lcCse()) << attribut << _certificate.issuerInfo(attribut);
}
qCDebug(lcCse()) << _certificate.subjectInfoAttributes();
for (const auto &attribut : _certificate.subjectInfoAttributes()) {
qCDebug(lcCse()) << attribut << _certificate.subjectInfo(attribut);
}
for (const auto &extension : _certificate.extensions()) {
qCDebug(lcCse()) << extension.name() << extension.value();
}
_publicKey = _certificate.publicKey();
getServerPublicKeyFromServer(account);
fetchAndValidatePublicKeyFromServer(account);
}
qCInfo(lcCse()) << retCode;
});
@ -1322,9 +1318,8 @@ void ClientSideEncryption::getPublicKeyFromServer(const AccountPtr &account)
QString publicKey = doc.object()["ocs"].toObject()["data"].toObject()["public-keys"].toObject()[account->davUser()].toString();
_certificate = QSslCertificate(publicKey.toLocal8Bit(), QSsl::Pem);
_publicKey = _certificate.publicKey();
qCInfo(lcCse()) << publicKey;
qCInfo(lcCse()) << "Found Public key, requesting Server Public Key.";
getServerPublicKeyFromServer(account);
qCInfo(lcCse()) << "Found Public key, requesting Server Public Key. Public key:" << publicKey;
fetchAndValidatePublicKeyFromServer(account);
} else if (retCode == 404) {
qCInfo(lcCse()) << "No public key on the server";
generateKeyPair(account);
@ -1335,15 +1330,14 @@ void ClientSideEncryption::getPublicKeyFromServer(const AccountPtr &account)
job->start();
}
void ClientSideEncryption::getServerPublicKeyFromServer(const AccountPtr &account)
void ClientSideEncryption::fetchAndValidatePublicKeyFromServer(const AccountPtr &account)
{
qCInfo(lcCse()) << "Retrieving public key from server";
auto job = new JsonApiJob(account, baseUrl() + "server-key", this);
connect(job, &JsonApiJob::jsonReceived, [this, account](const QJsonDocument& doc, int retCode) {
if (retCode == 200) {
auto serverPublicKey = doc.object()["ocs"].toObject()["data"].toObject()["public-key"].toString();
qCInfo(lcCse()) << serverPublicKey;
qCInfo(lcCse()) << "Found Server Public key, checking it.";
const auto serverPublicKey = doc.object()["ocs"].toObject()["data"].toObject()["public-key"].toString().toLatin1();
qCInfo(lcCse()) << "Found Server Public key, checking it. Server public key:" << serverPublicKey;
if (checkServerPublicKeyValidity(serverPublicKey)) {
if (_privateKey.isEmpty()) {
qCInfo(lcCse()) << "Valid Server Public key, requesting Private Key.";

4
src/libsync/clientsideencryption.h
View file

@ -99,13 +99,13 @@ signals:
private:
void getPrivateKeyFromServer(const AccountPtr &account);
void getPublicKeyFromServer(const AccountPtr &account);
void getServerPublicKeyFromServer(const AccountPtr &account);
void fetchAndValidatePublicKeyFromServer(const AccountPtr &account);
void decryptPrivateKey(const AccountPtr &account, const QByteArray &key);
void fetchFromKeyChain(const AccountPtr &account);
bool checkPublicKeyValidity(const AccountPtr &account) const;
bool checkServerPublicKeyValidity(const QString &serverPublicKeyString) const;
bool checkServerPublicKeyValidity(const QByteArray &serverPublicKeyString) const;
void writePrivateKey(const AccountPtr &account);
void writeCertificate(const AccountPtr &account);
void writeMnemonic(const AccountPtr &account);