DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (5350524bb654)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159
/* 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/. */

#include "nsCOMPtr.h"
#include "nsComponentManagerUtils.h"
#include "nsKeyModule.h"
#include "nsString.h"

using namespace mozilla;
using namespace mozilla::psm;

NS_IMPL_ISUPPORTS(nsKeyObject, nsIKeyObject)

nsKeyObject::nsKeyObject()
  : mSymKey(nullptr)
{
}

nsKeyObject::~nsKeyObject()
{
  nsNSSShutDownPreventionLock locker;
  if (isAlreadyShutDown()) {
    return;
  }
  destructorSafeDestroyNSSReference();
  shutdown(ShutdownCalledFrom::Object);
}

void
nsKeyObject::virtualDestroyNSSReference()
{
  destructorSafeDestroyNSSReference();
}

void
nsKeyObject::destructorSafeDestroyNSSReference()
{
  mSymKey = nullptr;
}

//////////////////////////////////////////////////////////////////////////////
// nsIKeyObject

NS_IMETHODIMP
nsKeyObject::InitKey(int16_t aAlgorithm, PK11SymKey* aKey)
{
  if (!aKey || aAlgorithm != nsIKeyObject::HMAC) {
    return NS_ERROR_INVALID_ARG;
  }

  nsNSSShutDownPreventionLock locker;
  if (isAlreadyShutDown()) {
    return NS_ERROR_NOT_AVAILABLE;
  }

  mSymKey.reset(aKey);
  return NS_OK;
}

NS_IMETHODIMP
nsKeyObject::GetKeyObj(PK11SymKey** _retval)
{
  if (!_retval) {
    return NS_ERROR_INVALID_ARG;
  }

  *_retval = nullptr;

  nsNSSShutDownPreventionLock locker;
  if (isAlreadyShutDown()) {
    return NS_ERROR_NOT_AVAILABLE;
  }

  if (!mSymKey) {
    return NS_ERROR_NOT_INITIALIZED;
  }

  *_retval = mSymKey.get();
  return NS_OK;
}

NS_IMETHODIMP
nsKeyObject::GetType(int16_t *_retval)
{
  if (!_retval) {
    return NS_ERROR_INVALID_ARG;
  }
  *_retval = nsIKeyObject::SYM_KEY;
  return NS_OK;
}

//////////////////////////////////////////////////////////////////////////////
// nsIKeyObjectFactory

NS_IMPL_ISUPPORTS(nsKeyObjectFactory, nsIKeyObjectFactory)

nsKeyObjectFactory::nsKeyObjectFactory()
{
}

nsKeyObjectFactory::~nsKeyObjectFactory()
{
  nsNSSShutDownPreventionLock locker;
  if (isAlreadyShutDown()) {
    return;
  }
  shutdown(ShutdownCalledFrom::Object);
}

NS_IMETHODIMP
nsKeyObjectFactory::KeyFromString(int16_t aAlgorithm, const nsACString& aKey,
                                  nsIKeyObject** _retval)
{
  if (!_retval || aAlgorithm != nsIKeyObject::HMAC) {
    return NS_ERROR_INVALID_ARG;
  }

  nsNSSShutDownPreventionLock locker;
  if (isAlreadyShutDown()) {
    return NS_ERROR_NOT_AVAILABLE;
  }

  CK_MECHANISM_TYPE cipherMech = CKM_GENERIC_SECRET_KEY_GEN;
  CK_ATTRIBUTE_TYPE cipherOperation = CKA_SIGN;

  nsresult rv;
  nsCOMPtr<nsIKeyObject> key(
    do_CreateInstance(NS_KEYMODULEOBJECT_CONTRACTID, &rv));
  if (NS_FAILED(rv)) {
    return rv;
  }

  // Convert the raw string into a SECItem
  const nsCString& flatKey = PromiseFlatCString(aKey);
  SECItem keyItem;
  keyItem.data = (unsigned char*)flatKey.get();
  keyItem.len = flatKey.Length();

  UniquePK11SlotInfo slot(PK11_GetBestSlot(cipherMech, nullptr));
  if (!slot) {
    return NS_ERROR_FAILURE;
  }

  UniquePK11SymKey symKey(PK11_ImportSymKey(slot.get(), cipherMech,
                                            PK11_OriginUnwrap, cipherOperation,
                                            &keyItem, nullptr));
  if (!symKey) {
    return NS_ERROR_FAILURE;
  }

  rv = key->InitKey(aAlgorithm, symKey.release());
  if (NS_FAILED(rv)) {
    return rv;
  }

  key.swap(*_retval);
  return NS_OK;
}