sm2writetype.c

IBE是一种非对称密码技术

/* Copyright 2003-2006, Voltage Security, all rights reserved.
 */
#include "vibe.h"
#include "environment.h"
#include "base.h"
#include "libctx.h"
#include "securemail.h"
#include "p7obj.h"
#include "errorctx.h"

int VtSecureMail2ImplWrite (
   VtSecureMailObject *object,
   Pointer info,
   unsigned int flag
   )
{
  int status;
  unsigned int bufferSize;
  VoltSecureMailObject *obj = (VoltSecureMailObject *)(*object);
  VoltLibCtx *libCtx = (VoltLibCtx *)(obj->voltObject.libraryCtx);
  VoltSecureMailWriteCtx *writeCtx = (VoltSecureMailWriteCtx *)0;
  unsigned char *buffer = (unsigned char *)0;
  VtItem temp;
  unsigned char newLineChars[2] = { 0x0D, 0x0A };
  VOLT_DECLARE_FNCT_LINE(fnctLine)
  VOLT_DECLARE_ERROR_TYPE(errorType)

  VOLT_SET_ERROR_TYPE(errorType, VT_ERROR_TYPE_PRIMARY)

  do
  {
    /* Make sure this is being called appropriately.
     */
    VOLT_SET_FNCT_LINE(fnctLine)
    status = VT_ERROR_INVALID_TYPE;
    if (flag != VOLT_SECURE_MAIL_SET_TYPE_FLAG)
      break;

    /* Make sure the object is empty.
     */
    VOLT_SET_FNCT_LINE(fnctLine)
    status = VT_ERROR_INVALID_SECURE_MAIL_OBJ;
    if ((obj->state != 0) || (obj->localCtx != (Pointer)0))
      break;

    /* Check the info, we're expecting NULL.
     */
    VOLT_SET_FNCT_LINE(fnctLine)
    status = VT_ERROR_INVALID_ASSOCIATED_INFO;
    if (info != (Pointer)0)
      break;

    /* Build the local ctx.
     */
    bufferSize = sizeof (VoltSecureMailWriteCtx);

    VOLT_SET_FNCT_LINE(fnctLine)
    status = VT_ERROR_MEMORY;
    buffer = (unsigned char*) Z2Malloc (bufferSize, 0);
    if (buffer == (unsigned char*)0)
      break;
    Z2Memset(buffer, 0, bufferSize);

    writeCtx = (VoltSecureMailWriteCtx*) buffer;

    writeCtx->messageFormat = VT_MESSAGE_FORMAT_SECURE_MAIL_HTML_V2;
    
    VOLT_SET_ERROR_TYPE(errorType, 0)

    VOLT_SET_FNCT_LINE(fnctLine)
    status = VtCreatePkcs7Object(libCtx, VtPkcs7ImplWriteSignedDSA,
      (Pointer)0, &(obj->p7SignedData));
    if (status != 0)
      break;

    VOLT_SET_FNCT_LINE(fnctLine)
    status = VtCreatePkcs7Object(libCtx, VtPkcs7ImplWriteEnvelopeIBE,
      (Pointer)0, &(obj->p7EnvelopedData));
    if (status != 0)
      break;

    /* Copy the new line chars and the begin and end messages.
    * We may want to change the new line char later, so set it to the
    * default.
    */
    temp.data = newLineChars;
    temp.len = sizeof(newLineChars);
    
    VOLT_SET_FNCT_LINE(fnctLine)
    status = VoltCopyItemDataAlloc(libCtx, 0, 0, &temp,
      &(writeCtx->itemArray[VOLT_WRITE_SM_ITEM_NEW_LINE]));
    if (status != 0)
      break;

    obj->formatType = VOLT_MESSAGE_FORMAT_SECURE_MAIL_2;
    obj->state = VOLT_SECURE_MAIL_STATE_WRITE_SET;
    obj->WriteInit = VoltSecureMail2WriteInit;
    obj->WriteUpdate = VoltSecureMailWriteUpdate;
    obj->WriteFinal = VoltSecureMailWriteFinal;
    obj->GetEncodeDecodeSize = VoltBase64GetEncodeDecodeSize;
    obj->localCtx = (Pointer)buffer;
    obj->LocalCtxDestroy = VoltWriteSecureMailCtxDestroy;

  } while (0);

  /* If there was an error, free up the context */
  if (status != 0)
  {
    VoltWriteSecureMailCtxDestroy ((Pointer)obj, (Pointer)writeCtx);
    
    VOLT_LOG_ERROR(libCtx, status, errorType, fnctLine,
      "VtSecureMail2ImplWrite", (unsigned char*)0)
  }

  return status;
}

int VtSecureMail2ImplWriteFromZDM (
   VtSecureMailObject* object,
   Pointer info,
   unsigned int flag
   )
{
  int status;
  VoltSecureMailObject *obj = (VoltSecureMailObject *)(*object);
  VoltLibCtx* libCtx = (VoltLibCtx*) obj->voltObject.libraryCtx;
  VoltSecureMailFromZDMWriteCtx* writeCtx = (VoltSecureMailFromZDMWriteCtx*)0;
  VtItem temp;
  unsigned char newLineChars[2] = { 0x0D, 0x0A };
  VOLT_DECLARE_FNCT_LINE(fnctLine)
  VOLT_DECLARE_ERROR_TYPE(errorType)

  VOLT_SET_ERROR_TYPE(errorType, VT_ERROR_TYPE_PRIMARY)

  do
  {
    /* Make sure this is being called appropriately. */
    VOLT_SET_FNCT_LINE(fnctLine)
    status = VT_ERROR_INVALID_TYPE;
    if (flag != VOLT_SECURE_MAIL_SET_TYPE_FLAG)
      break;

    /* Make sure the object is empty. */
    VOLT_SET_FNCT_LINE(fnctLine)
    status = VT_ERROR_INVALID_SECURE_MAIL_OBJ;
    if ((obj->state != 0) || (obj->localCtx != (Pointer)0))
      break;

    /* Check the info, we're expecting a VtZDMObject. */
    VOLT_SET_FNCT_LINE(fnctLine)
    status = VT_ERROR_INVALID_ASSOCIATED_INFO;
    if ((info == (Pointer)0) || VOLT_OBJECT_TYPE_NOT_EQUAL (info, VOLT_OBJECT_TYPE_ZDM))
      break;

    /* Build the local ctx. */
    VOLT_SET_FNCT_LINE(fnctLine)
    status = VT_ERROR_MEMORY;
    writeCtx = (VoltSecureMailFromZDMWriteCtx*)
      Z3Malloc(sizeof(VoltSecureMailFromZDMWriteCtx));
    if (writeCtx == (VoltSecureMailFromZDMWriteCtx*)0)
      break;
    Z2Memset(writeCtx, 0, sizeof(VoltSecureMailFromZDMWriteCtx));
    
    /* Copy the new line chars and the begin and end messages.
    * We may want to change the new line char later, so set it to the
    * default.
    */
    temp.data = newLineChars;
    temp.len = sizeof(newLineChars);
    
    VOLT_SET_ERROR_TYPE(errorType, 0)
    VOLT_SET_FNCT_LINE(fnctLine)
    status = VoltCopyItemDataAlloc(libCtx, 0, 0, &temp,
      &(writeCtx->baseCtx.itemArray[VOLT_WRITE_SM_ITEM_NEW_LINE]));
    if (status != 0)
      break;

    obj->formatType = VOLT_MESSAGE_FORMAT_SECURE_MAIL_2;
    obj->state = VOLT_SECURE_MAIL_STATE_WRITE_SET;
    obj->WriteInit = VoltSM2FromZDMWriteInit;
    obj->WriteUpdate = VoltSM2FromZDMWriteUpdate;
    obj->WriteFinal = VoltSM2FromZDMWriteFinal;
    obj->GetEncodeDecodeSize = VoltBase64GetEncodeDecodeSize;
    obj->localCtx = (Pointer)writeCtx;
    obj->LocalCtxDestroy = VoltWriteSecureMailCtxDestroy;
    writeCtx->zdmObj = (VtZDMObject)info;

  } while (0);

  /* If there was an error, free up the context */
  if (status != 0)
  {
    VoltWriteSecureMailCtxDestroy ((Pointer)obj, (Pointer)writeCtx);
    
    VOLT_LOG_ERROR(libCtx, status, errorType, fnctLine,
      "VtSecureMail2ImplWriteFromZDM", (unsigned char*)0)
  }

  return status;
}