defaultstorageprov.c

IBE是一种非对称密码技术

  } while (0);

  if (dirName != (unsigned char *)0)
    Z2Free (dirName);

  if (tokens != (unsigned char **)0)
  {
    for (index = 0; index < tokenCount; ++index)
    {
      if (tokens[index] != (unsigned char *)0)
        Z2Free (tokens[index]);
    }

    Z2Free (tokens);
  }

  if (nameList != (VtFileNameList *)0)
    VoltFileListFree (libCtx, &nameList);

  *newTokenCount = count;

  if (status == 0)
    return 0;

  VOLT_LOG_ERROR (
    (VtLibCtx)libCtx, status, errorType, fnctLine,
    "VoltRetrieveNewAuthTokensFromDistrict", (char *)0)

  return (status);
}

int VoltDefaultRetrieveNewAuthTokens (
   VtStorageCtx storageCtx,
   VtDistrictObject reference,
   VoltAuthTokenListObject *tokenListObj,
   unsigned int *newTokenCount
   )
{
  return VoltRetrieveNewAuthTokensForDistrict (
    storageCtx, reference, tokenListObj, 
    newTokenCount,VOLT_FILE_NAME_VALUE_TYPE_IBE_TOKEN);
}

int VoltDefaultRetrieveCurrentDistrictAlloc (
   VtStorageCtx storageCtx,
   unsigned char *reference,
   unsigned int *currentDistrictResult,
   unsigned char **currentDistrict,
   VtTime *validityStart,
   VtTime *validityEnd,
   VtTime *timeOfStore
   )
{
  int status;
  unsigned int fileNameLen, contentsLen, nameLen, offset;
  VoltStorageCtx *ctx = (VoltStorageCtx *)storageCtx;
  VoltLibCtx *libCtx = (VoltLibCtx *)(ctx->voltObject.libraryCtx);
  VoltDefaultStorageCtx *defStorageCtx =
    (VoltDefaultStorageCtx *)(ctx->localStorageCtx);
  VoltFileCtx *fileCtx = (VoltFileCtx *)0;
  unsigned char *fileName = (unsigned char *)0;
  unsigned char *contents = (unsigned char *)0;
  unsigned char *nameCopy = (unsigned char *)0;
  VoltFileHandle fileHandle = (VoltFileHandle)0;
  VOLT_DECLARE_FNCT_LINE (fnctLine)
  VOLT_DECLARE_ERROR_TYPE (errorType)

  /* If this function was called by the VtStorageImplNull 
   * simply return Vt_ERROR_NO_STORAGE_PROVIDER_LOADED
   */
  if (ctx->providerNum == -2)
    return VT_ERROR_NO_STORAGE_PROVIDER_LOADED;

  fileCtx = (VoltFileCtx *)defStorageCtx->fCtx;
  *currentDistrictResult = VOLT_CURRENT_DIST_UNKNOWN;
  do
  {
    /* Get the file name.
     */
    VOLT_SET_ERROR_TYPE (errorType, 0)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VoltGetFileNameFromValueAlloc (
      ctx, (unsigned char *)0, 0, reference, Z2Strlen (reference),
      VOLT_FILE_NAME_VALUE_TYPE_CURR_DIST, &fileName, &fileNameLen);
    if (status != 0)
      break;

    /* Try to open this file.
     */
    VOLT_SET_FNCT_LINE (fnctLine)
    status = fileCtx->CtxOpenFile (
      fileCtx, &fileHandle, fileName, VOLT_FILE_MODE_READ_ONLY, 0);

    /* If the return to the open call is ERROR, there was no file to
     * open, this function can say nothing about the current district.
     * currentDistrictResult was set to VOLT_CURRENT_DIST_UNKNOWN.
     */
    if (status == VT_ERROR_FILE_DOES_NOT_EXIST)
    {
      status = 0;
      break;
    }

    /* Any other error pass on.
     */
    if (status != 0)
      break;    

    /* Get the contents of the file.
     */
    VOLT_SET_FNCT_LINE (fnctLine)
    status = mIcLoadDataAlloc (
      ctx, fileCtx, fileHandle, (unsigned char *)0, 0, &contents, &contentsLen);
    if (status != 0)
      break;
    
    /* The first VOLT_TIME_ARRAY_SIZE bytes will be the time of
     * store. 
     */
    VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_FILE_READ;
    if (contentsLen < VOLT_TIME_ARRAY_SIZE)
      break;

    /* Did the file contain a current district? Or did the file contain
     * the information that there is no current district?
     * If the only data in the file was time of store, then there is no
     * district.
     */
    VoltConvertArrayToTime (contents, timeOfStore);    
    status = 0;
    *currentDistrictResult = VOLT_CURRENT_DIST_NO_DIST;
    if (contentsLen == VOLT_TIME_ARRAY_SIZE)
      break;

    /* Has the current district expired? Use timeOfStore as a temp
     * variable, get the current time and see if it falls between the
     * validityStart and End.
     */
    VtGetTime ((VtLibCtx)libCtx, timeOfStore);
    offset = VOLT_TIME_ARRAY_SIZE;
    VoltConvertArrayToTime (contents + offset, validityStart);
    offset += VOLT_TIME_ARRAY_SIZE;
    VoltConvertArrayToTime (contents + offset, validityEnd);
    offset += VOLT_TIME_ARRAY_SIZE;

    /* If the currentDistrict in storage has expired, we'll want to
     * download again, so return 0 indicating we successfully
     * determined something, and what we determined was
     * VOLT_CURRENT_DIST_UNKNOWN.
     */
    status = 0;
    *currentDistrictResult = VOLT_CURRENT_DIST_UNKNOWN;
    if (VoltCompareTime (timeOfStore, validityStart) < 0)
      break;
    if (VoltCompareTime (validityEnd, timeOfStore) < 0)
      break;

    VoltConvertArrayToTime (contents, timeOfStore);    

    /* Build the name with a NULL-terminating character.
     */
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_MEMORY;
    nameLen = contentsLen - offset;
    nameCopy = (unsigned char *)Z2Malloc (nameLen + 1, 0);
    if (nameCopy == (unsigned char *)0)
      break;
    Z2Memcpy (nameCopy, contents + offset, nameLen);
    nameCopy[nameLen] = 0;

    *currentDistrictResult = VOLT_CURRENT_DIST_FOUND;
    *currentDistrict = nameCopy;
    status = 0;

  } while (0);
  
  if (fileHandle != (VoltFileHandle)0)
    fileCtx->CtxCloseFile(fileCtx, &fileHandle);
  if (fileName != (unsigned char *)0)
    Z2Free (fileName);
  if (contents != (unsigned char *)0)
    Z2Free (contents);

  if (status == 0)
    return (0);

  /* If there was an error, we won't return this buffer.
   */
  if (nameCopy != (unsigned char *)0)
    Z2Free (nameCopy);

  VOLT_LOG_ERROR (
    (VtLibCtx)libCtx, status, errorType, fnctLine,
    "VoltDefaultRetrieveCurrentDistrictAlloc", (char *)0)

  return (status);
}

int VoltDefaultRetrieveDistrictParameters (
   VtStorageCtx storageCtx,
   VtDistrictObject entry,
   unsigned int index,
   VtTime *timeOfStore
   )
{
  int status;
  unsigned int fileNameLen, contentsLen;
  VoltStorageCtx *ctx = (VoltStorageCtx *)storageCtx;
  VoltLibCtx *libCtx = (VoltLibCtx *)(ctx->voltObject.libraryCtx);
  VoltDefaultStorageCtx *defStorageCtx =
    (VoltDefaultStorageCtx *)(ctx->localStorageCtx);
  VoltFileCtx *fileCtx = (VoltFileCtx *)0;
  VoltDistrictObject *obj = (VoltDistrictObject *)entry;
  unsigned char *fileName = (unsigned char *)0;
  unsigned char *nameToUse;
  unsigned char *contents = (unsigned char *)0;
  VoltFileHandle fileHandle = (VoltFileHandle)0;
  VtFileNameList *nameList = (VtFileNameList *)0;
  VOLT_DECLARE_FNCT_LINE (fnctLine)
  VOLT_DECLARE_ERROR_TYPE (errorType)

  /* If this function was called by the VtStorageImplNull 
   * simply return Vt_ERROR_NO_STORAGE_PROVIDER_LOADED
   */
  if (ctx->providerNum == -2)
    return VT_ERROR_NO_STORAGE_PROVIDER_LOADED;

  fileCtx = (VoltFileCtx *)defStorageCtx->fCtx;
  do
  {
    /* If the entry obj is already set, error.
     */
    VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_INVALID_STORAGE_ENTRY;
    if ( (obj->paramsText != (unsigned char *)0) ||
         (obj->paramObj != (VtParameterObject)0) )
      break;

    /* If there's no reference, get a list of files.
     */    
    status = VT_ERROR_INVALID_STORAGE_REF;
    if (obj->qualDistrictName.data == (unsigned char *)0)
    {
      /* If there's no qualified name, there can be no domain name.
       */
      VOLT_SET_FNCT_LINE (fnctLine)
      if (obj->unqualDistrictName.data != (unsigned char *)0)
        break;

      VOLT_SET_ERROR_TYPE (errorType, 0)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VoltGetStorageFileListAlloc (
        ctx, VOLT_STORE_DIR_DIST_PARAMS, VOLT_STORE_DIR_DIST_PARAMS_LEN,
        0, &nameList);
      if (status != 0)
        break;

      VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VT_ERROR_ENTRY_NOT_FOUND;
      if (nameList == (VtFileNameList *)0)
        break;

      if (index >= nameList->nameCount)
        break;

      nameToUse = nameList->nameList[index];
    }
    else
    {
      /* Get the file name.
       */
      VOLT_SET_ERROR_TYPE (errorType, 0)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VoltGetFileNameFromValueAlloc (
        ctx, (unsigned char *)0, 0, obj->qualDistrictName.data,
        obj->qualDistrictName.len, VOLT_FILE_NAME_VALUE_TYPE_DIST_PARAMS,
        &fileName, &fileNameLen);
      if (status != 0)
        break;

      nameToUse = fileName;
    }

    /* Try to open this file.
     */
    VOLT_SET_ERROR_TYPE (errorType, 0)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = fileCtx->CtxOpenFile (
      fileCtx, &fileHandle, nameToUse, VOLT_FILE_MODE_READ_ONLY, 0);

    /* If the return to the open call is ERROR, there was no file to
     * open, this function indicates no params found.
     */
    if (status == VT_ERROR_FILE_DOES_NOT_EXIST)
    {
      status = VT_ERROR_UNKNOWN_DISTRICT;
      break;
    }

    /* Any other error pass on.
     */
    if (status != 0)
      break;    

    /* Get the contents of the file.
     */   
    VOLT_SET_FNCT_LINE (fnctLine)    
    status = mIcLoadDataAlloc (
      ctx, fileCtx, fileHandle, (unsigned char *)0, 0, &contents, &contentsLen);
    if (status != 0)
      break;   

    /* The first VOLT_TIME_ARRAY_SIZE bytes will be the time of store.
     */
    VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_FILE_READ;
    if (contentsLen < VOLT_TIME_ARRAY_SIZE)
      break;

    VoltConvertArrayToTime (contents, timeOfStore);

    /* The rest of the contents should be the district info.
     */
    VOLT_SET_ERROR_TYPE (errorType, 0)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VoltSetDistFromParamsText (
      contents + VOLT_TIME_ARRAY_SIZE, contentsLen - VOLT_TIME_ARRAY_SIZE,
      obj, obj->mpCtx, libCtx);

  } while (0);
  
  if (fileHandle != (VoltFileHandle)0)
    fileCtx->CtxCloseFile (fileCtx, &fileHandle);
  if (nameList != (VtFileNameList *)0)
    VoltFileListFree (libCtx, &nameList);
  if (fileName != (unsigned char *)0)
    Z2Free (fileName);
  if (contents != (unsigned char *)0)
    Z2Free (contents);

  if (status == 0)
    return 0;

  VOLT_LOG_ERROR (
    (VtLibCtx)libCtx, status, errorType, fnctLine,
    "VoltDefaultRetrieveDistrictParameters", (char *)0)

  return (status);
}

int VoltDefaultRetrieveIBEPrivateKey (
   VtStorageCtx storageCtx,
   VtIdentityObject reference,
   VtPolicyCtx policyCtx,
   unsigned int index,
   VtKeyObject keyObj
   )
{
  int status;
  unsigned int fileNameLen, contentsLen, passwordLen;
  VoltStorageCtx *ctx = (VoltStorageCtx *)storageCtx;
  VoltLibCtx *libCtx = (VoltLibCtx *)(ctx->voltObject.libraryCtx);
  VoltDefaultStorageCtx *defStorageCtx =
    (VoltDefaultStorageCtx *)(ctx->localStorageCtx);
  VoltFileCtx *fileCtx = (VoltFileCtx *)0;
  VoltIdentityObject *idObj = (VoltIdentityObject *)reference;
  VoltKeyObject *key = (VoltKeyObject *)keyObj;  
  unsigned char *fileName = (unsigned char *)0;
  unsigned char *password = (unsigned char *)0;
  unsigned char *nameToUse;
  unsigned char *contents = (unsigned char *)0;
  VoltFileHandle fileHandle = (VoltFileHandle)0;
  VtFileNameList *nameList = (VtFileNameList *)0;
  VtDerCoder *derCoders[1] = { VtDerCoderBFType1IBEPrivateKey };   
  VtSetKeyBerInfo berInfo;
  VOLT_DECLARE_FNCT_LINE (fnctLine)
  VOLT_DECLARE_ERROR_TYPE (errorType)

  /* If this function was called by the VtStorageImplNull 
   * simply return Vt_ERROR_NO_STORAGE_PROVIDER_LOADED
   */
  if (ctx->providerNum == -2)
    return VT_ERROR_NO_STORAGE_PROVIDER_LOADED;

  fileCtx = (VoltFileCtx *)defStorageCtx->fCtx;
  Z2Memset (&berInfo, 0, sizeof (VtSetKeyBerInfo));
  do
  {
    /* If the keyObj is already set, error.
     */
    VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
    VOLT_SET_FNCT_LINE (fnctLine)
    status = VT_ERROR_INVALID_KEY_OBJ;
    if (key->keyType != 0)
      break;

    /* If there's no reference, get whatever value is at the index.
     */
    if (reference == (VtIdentityObject)0)
    {
      VOLT_SET_ERROR_TYPE (errorType, 0)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VoltGetStorageFileListAlloc (
        ctx, VOLT_STORE_DIR_IBE_KEYS, VOLT_STORE_DIR_IBE_KEYS_LEN,
        0, &nameList);
      if (status != 0)
        break;

      VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VT_ERROR_ENTRY_NOT_FOUND;
      if (nameList == (VtFileNameList *)0)
        break;

      if (index >= nameList->nameCount)
        break;

      nameToUse = nameList->nameList[index];
    }
    else
    {
      /* We need the identity encoded.
       */
      VOLT_SET_ERROR_TYPE (errorType, VT_ERROR_TYPE_PRIMARY)
      VOLT_SET_FNCT_LINE (fnctLine)
      status = VT_ERROR_INVALID_STORAGE_REF;
      if (idObj->encoding.data == (unsigned char *)0)
        break;