mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-25 22:01:30 +00:00
150 lines
4.2 KiB
C++
150 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef TrustOverrides_h
|
|
#define TrustOverrides_h
|
|
|
|
#include "mozilla/ArrayUtils.h"
|
|
#include "mozpkix/pkix.h"
|
|
#include "mozpkix/pkixnss.h"
|
|
#include "mozpkix/pkixutil.h"
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::pkix;
|
|
|
|
struct DataAndLength {
|
|
const uint8_t* data;
|
|
uint32_t len;
|
|
};
|
|
|
|
template <size_t T>
|
|
static bool CertDNIsInList(const nsTArray<uint8_t>& aCert,
|
|
const DataAndLength (&aDnList)[T]) {
|
|
Input certInput;
|
|
mozilla::pkix::Result rv = certInput.Init(aCert.Elements(), aCert.Length());
|
|
if (rv != Success) {
|
|
return false;
|
|
}
|
|
|
|
// we don't use the certificate for path building, so this parameter doesn't
|
|
// matter
|
|
EndEntityOrCA notUsedForPaths = EndEntityOrCA::MustBeEndEntity;
|
|
BackCert cert(certInput, notUsedForPaths, nullptr);
|
|
rv = cert.Init();
|
|
if (rv != Success) {
|
|
return false;
|
|
}
|
|
|
|
Input subject(cert.GetSubject());
|
|
|
|
for (auto& dn : aDnList) {
|
|
Input dnInput;
|
|
rv = dnInput.Init(dn.data, dn.len);
|
|
if (rv != Success) {
|
|
return false;
|
|
}
|
|
|
|
if (InputsAreEqual(subject, dnInput)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
template <size_t T>
|
|
static bool CertSPKIIsInList(Input aCertInput,
|
|
const DataAndLength (&aSpkiList)[T]) {
|
|
// we don't use the certificate for path building, so this parameter doesn't
|
|
// matter
|
|
EndEntityOrCA notUsedForPaths = EndEntityOrCA::MustBeEndEntity;
|
|
BackCert cert(aCertInput, notUsedForPaths, nullptr);
|
|
mozilla::pkix::Result rv = cert.Init();
|
|
if (rv != Success) {
|
|
return false;
|
|
}
|
|
|
|
Input publicKey(cert.GetSubjectPublicKeyInfo());
|
|
|
|
for (auto& spki : aSpkiList) {
|
|
Input spkiInput;
|
|
rv = spkiInput.Init(spki.data, spki.len);
|
|
if (rv != Success) {
|
|
return false;
|
|
}
|
|
|
|
if (InputsAreEqual(publicKey, spkiInput)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
template <size_t T, size_t R>
|
|
static bool CertMatchesStaticData(const nsTArray<uint8_t>& aCert,
|
|
const unsigned char (&subject)[T],
|
|
const unsigned char (&spki)[R]) {
|
|
Input certInput;
|
|
mozilla::pkix::Result rv = certInput.Init(aCert.Elements(), aCert.Length());
|
|
if (rv != Success) {
|
|
return false;
|
|
}
|
|
|
|
// we don't use the certificate for path building, so this parameter doesn't
|
|
// matter
|
|
EndEntityOrCA notUsedForPaths = EndEntityOrCA::MustBeEndEntity;
|
|
BackCert cert(certInput, notUsedForPaths, nullptr);
|
|
rv = cert.Init();
|
|
if (rv != Success) {
|
|
return false;
|
|
}
|
|
|
|
Input certSubject(cert.GetSubject());
|
|
Input certSPKI(cert.GetSubjectPublicKeyInfo());
|
|
|
|
Input subjectInput;
|
|
rv = subjectInput.Init(subject, T);
|
|
if (rv != Success) {
|
|
return false;
|
|
}
|
|
|
|
Input spkiInput;
|
|
rv = spkiInput.Init(spki, R);
|
|
if (rv != Success) {
|
|
return false;
|
|
}
|
|
|
|
return InputsAreEqual(certSubject, subjectInput) &&
|
|
InputsAreEqual(certSPKI, spkiInput);
|
|
}
|
|
|
|
// Implements the graduated Symantec distrust algorithm from Bug 1409257.
|
|
// This accepts a pre-segmented certificate chain (e.g. SegmentCertificateChain)
|
|
// as |intCerts|, and pre-assumes that the root has been identified
|
|
// as being affected (this is to avoid duplicate Segment operations in the
|
|
// NSSCertDBTrustDomain). Each of the |intCerts| is evaluated against a
|
|
// |allowlist| of SPKI entries, and if a match is found, then this returns
|
|
// "not distrusted." Otherwise, due to the precondition holding, the chain is
|
|
// "distrusted."
|
|
template <size_t T>
|
|
static nsresult CheckForSymantecDistrust(const nsTArray<Input>& intCerts,
|
|
const DataAndLength (&allowlist)[T],
|
|
/* out */ bool& isDistrusted) {
|
|
// PRECONDITION: The rootCert is already verified as being one of the
|
|
// affected Symantec roots
|
|
|
|
isDistrusted = true;
|
|
|
|
for (const auto& cert : intCerts) {
|
|
if (CertSPKIIsInList(cert, allowlist)) {
|
|
isDistrusted = false;
|
|
break;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
#endif // TrustOverrides_h
|