/security/nss/lib/smime/cmsdigdata.c
http://github.com/zpao/v8monkey · C · 244 lines · 108 code · 29 blank · 107 comment · 26 complexity · 23df21814c4ec54db893f5c4b28d9a07 MD5 · raw file
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is the Netscape security libraries.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1994-2000
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- /*
- * CMS digestedData methods.
- *
- * $Id: cmsdigdata.c,v 1.7 2011/02/11 01:53:17 emaldona%redhat.com Exp $
- */
- #include "cmslocal.h"
- #include "secitem.h"
- #include "secasn1.h"
- #include "secoid.h"
- #include "secerr.h"
- /*
- * NSS_CMSDigestedData_Create - create a digestedData object (presumably for encoding)
- *
- * version will be set by NSS_CMSDigestedData_Encode_BeforeStart
- * digestAlg is passed as parameter
- * contentInfo must be filled by the user
- * digest will be calculated while encoding
- */
- NSSCMSDigestedData *
- NSS_CMSDigestedData_Create(NSSCMSMessage *cmsg, SECAlgorithmID *digestalg)
- {
- void *mark;
- NSSCMSDigestedData *digd;
- PLArenaPool *poolp;
- poolp = cmsg->poolp;
- mark = PORT_ArenaMark(poolp);
- digd = (NSSCMSDigestedData *)PORT_ArenaZAlloc(poolp, sizeof(NSSCMSDigestedData));
- if (digd == NULL)
- goto loser;
- digd->cmsg = cmsg;
- if (SECOID_CopyAlgorithmID (poolp, &(digd->digestAlg), digestalg) != SECSuccess)
- goto loser;
- PORT_ArenaUnmark(poolp, mark);
- return digd;
- loser:
- PORT_ArenaRelease(poolp, mark);
- return NULL;
- }
- /*
- * NSS_CMSDigestedData_Destroy - destroy a digestedData object
- */
- void
- NSS_CMSDigestedData_Destroy(NSSCMSDigestedData *digd)
- {
- /* everything's in a pool, so don't worry about the storage */
- NSS_CMSContentInfo_Destroy(&(digd->contentInfo));
- return;
- }
- /*
- * NSS_CMSDigestedData_GetContentInfo - return pointer to digestedData object's contentInfo
- */
- NSSCMSContentInfo *
- NSS_CMSDigestedData_GetContentInfo(NSSCMSDigestedData *digd)
- {
- return &(digd->contentInfo);
- }
- /*
- * NSS_CMSDigestedData_Encode_BeforeStart - do all the necessary things to a DigestedData
- * before encoding begins.
- *
- * In particular:
- * - set the right version number. The contentInfo's content type must be set up already.
- */
- SECStatus
- NSS_CMSDigestedData_Encode_BeforeStart(NSSCMSDigestedData *digd)
- {
- unsigned long version;
- SECItem *dummy;
- version = NSS_CMS_DIGESTED_DATA_VERSION_DATA;
- if (!NSS_CMSType_IsData(NSS_CMSContentInfo_GetContentTypeTag(
- &(digd->contentInfo))))
- version = NSS_CMS_DIGESTED_DATA_VERSION_ENCAP;
- dummy = SEC_ASN1EncodeInteger(digd->cmsg->poolp, &(digd->version), version);
- return (dummy == NULL) ? SECFailure : SECSuccess;
- }
- /*
- * NSS_CMSDigestedData_Encode_BeforeData - do all the necessary things to a DigestedData
- * before the encapsulated data is passed through the encoder.
- *
- * In detail:
- * - set up the digests if necessary
- */
- SECStatus
- NSS_CMSDigestedData_Encode_BeforeData(NSSCMSDigestedData *digd)
- {
- SECStatus rv =NSS_CMSContentInfo_Private_Init(&digd->contentInfo);
- if (rv != SECSuccess) {
- return SECFailure;
- }
- /* set up the digests */
- if (digd->digestAlg.algorithm.len != 0 && digd->digest.len == 0) {
- /* if digest is already there, do nothing */
- digd->contentInfo.privateInfo->digcx = NSS_CMSDigestContext_StartSingle(&(digd->digestAlg));
- if (digd->contentInfo.privateInfo->digcx == NULL)
- return SECFailure;
- }
- return SECSuccess;
- }
- /*
- * NSS_CMSDigestedData_Encode_AfterData - do all the necessary things to a DigestedData
- * after all the encapsulated data was passed through the encoder.
- *
- * In detail:
- * - finish the digests
- */
- SECStatus
- NSS_CMSDigestedData_Encode_AfterData(NSSCMSDigestedData *digd)
- {
- SECStatus rv = SECSuccess;
- /* did we have digest calculation going on? */
- if (digd->contentInfo.privateInfo && digd->contentInfo.privateInfo->digcx) {
- rv = NSS_CMSDigestContext_FinishSingle(digd->contentInfo.privateInfo->digcx,
- digd->cmsg->poolp,
- &(digd->digest));
- /* error has been set by NSS_CMSDigestContext_FinishSingle */
- digd->contentInfo.privateInfo->digcx = NULL;
- }
- return rv;
- }
- /*
- * NSS_CMSDigestedData_Decode_BeforeData - do all the necessary things to a DigestedData
- * before the encapsulated data is passed through the encoder.
- *
- * In detail:
- * - set up the digests if necessary
- */
- SECStatus
- NSS_CMSDigestedData_Decode_BeforeData(NSSCMSDigestedData *digd)
- {
- SECStatus rv;
- /* is there a digest algorithm yet? */
- if (digd->digestAlg.algorithm.len == 0)
- return SECFailure;
- rv = NSS_CMSContentInfo_Private_Init(&digd->contentInfo);
- if (rv != SECSuccess) {
- return SECFailure;
- }
- digd->contentInfo.privateInfo->digcx = NSS_CMSDigestContext_StartSingle(&(digd->digestAlg));
- if (digd->contentInfo.privateInfo->digcx == NULL)
- return SECFailure;
- return SECSuccess;
- }
- /*
- * NSS_CMSDigestedData_Decode_AfterData - do all the necessary things to a DigestedData
- * after all the encapsulated data was passed through the encoder.
- *
- * In detail:
- * - finish the digests
- */
- SECStatus
- NSS_CMSDigestedData_Decode_AfterData(NSSCMSDigestedData *digd)
- {
- SECStatus rv = SECSuccess;
- /* did we have digest calculation going on? */
- if (digd->contentInfo.privateInfo && digd->contentInfo.privateInfo->digcx) {
- rv = NSS_CMSDigestContext_FinishSingle(digd->contentInfo.privateInfo->digcx,
- digd->cmsg->poolp,
- &(digd->cdigest));
- /* error has been set by NSS_CMSDigestContext_FinishSingle */
- digd->contentInfo.privateInfo->digcx = NULL;
- }
- return rv;
- }
- /*
- * NSS_CMSDigestedData_Decode_AfterEnd - finalize a digestedData.
- *
- * In detail:
- * - check the digests for equality
- */
- SECStatus
- NSS_CMSDigestedData_Decode_AfterEnd(NSSCMSDigestedData *digd)
- {
- /* did we have digest calculation going on? */
- if (digd->cdigest.len != 0) {
- /* XXX comparision btw digest & cdigest */
- /* XXX set status */
- /* TODO!!!! */
- }
- return SECSuccess;
- }