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361 lines
10 KiB
C
361 lines
10 KiB
C
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1994-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* CMS contentInfo methods.
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*
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* $Id: cmscinfo.c,v 1.7 2004/04/25 15:03:16 gerv%gerv.net Exp $
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*/
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#include "cmslocal.h"
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#include "pk11func.h"
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#include "secitem.h"
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#include "secoid.h"
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#include "secerr.h"
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/*
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* NSS_CMSContentInfo_Create - create a content info
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*
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* version is set in the _Finalize procedures for each content type
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*/
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/*
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* NSS_CMSContentInfo_Destroy - destroy a CMS contentInfo and all of its sub-pieces.
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*/
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void
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NSS_CMSContentInfo_Destroy(NSSCMSContentInfo *cinfo)
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{
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SECOidTag kind;
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kind = NSS_CMSContentInfo_GetContentTypeTag(cinfo);
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switch (kind) {
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case SEC_OID_PKCS7_ENVELOPED_DATA:
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NSS_CMSEnvelopedData_Destroy(cinfo->content.envelopedData);
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break;
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case SEC_OID_PKCS7_SIGNED_DATA:
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NSS_CMSSignedData_Destroy(cinfo->content.signedData);
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break;
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case SEC_OID_PKCS7_ENCRYPTED_DATA:
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NSS_CMSEncryptedData_Destroy(cinfo->content.encryptedData);
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break;
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case SEC_OID_PKCS7_DIGESTED_DATA:
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NSS_CMSDigestedData_Destroy(cinfo->content.digestedData);
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break;
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default:
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/* XXX Anything else that needs to be "manually" freed/destroyed? */
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break;
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}
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if (cinfo->digcx) {
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/* must destroy digest objects */
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NSS_CMSDigestContext_Cancel(cinfo->digcx);
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cinfo->digcx = NULL;
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}
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if (cinfo->bulkkey)
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PK11_FreeSymKey(cinfo->bulkkey);
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if (cinfo->ciphcx) {
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NSS_CMSCipherContext_Destroy(cinfo->ciphcx);
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cinfo->ciphcx = NULL;
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}
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/* we live in a pool, so no need to worry about storage */
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}
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/*
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* NSS_CMSContentInfo_GetChildContentInfo - get content's contentInfo (if it exists)
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*/
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NSSCMSContentInfo *
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NSS_CMSContentInfo_GetChildContentInfo(NSSCMSContentInfo *cinfo)
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{
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void * ptr = NULL;
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NSSCMSContentInfo * ccinfo = NULL;
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SECOidTag tag = NSS_CMSContentInfo_GetContentTypeTag(cinfo);
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switch (tag) {
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case SEC_OID_PKCS7_SIGNED_DATA:
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ptr = (void *)cinfo->content.signedData;
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ccinfo = &(cinfo->content.signedData->contentInfo);
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break;
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case SEC_OID_PKCS7_ENVELOPED_DATA:
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ptr = (void *)cinfo->content.envelopedData;
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ccinfo = &(cinfo->content.envelopedData->contentInfo);
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break;
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case SEC_OID_PKCS7_DIGESTED_DATA:
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ptr = (void *)cinfo->content.digestedData;
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ccinfo = &(cinfo->content.digestedData->contentInfo);
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break;
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case SEC_OID_PKCS7_ENCRYPTED_DATA:
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ptr = (void *)cinfo->content.encryptedData;
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ccinfo = &(cinfo->content.encryptedData->contentInfo);
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break;
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case SEC_OID_PKCS7_DATA:
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default:
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break;
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}
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return (ptr ? ccinfo : NULL);
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}
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/*
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* NSS_CMSContentInfo_SetContent - set content type & content
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*/
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SECStatus
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NSS_CMSContentInfo_SetContent(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, SECOidTag type, void *ptr)
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{
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SECStatus rv;
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cinfo->contentTypeTag = SECOID_FindOIDByTag(type);
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if (cinfo->contentTypeTag == NULL)
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return SECFailure;
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/* do not copy the oid, just create a reference */
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rv = SECITEM_CopyItem (cmsg->poolp, &(cinfo->contentType), &(cinfo->contentTypeTag->oid));
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if (rv != SECSuccess)
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return SECFailure;
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cinfo->content.pointer = ptr;
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if (type != SEC_OID_PKCS7_DATA) {
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/* as we always have some inner data,
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* we need to set it to something, just to fool the encoder enough to work on it
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* and get us into nss_cms_encoder_notify at that point */
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cinfo->rawContent = SECITEM_AllocItem(cmsg->poolp, NULL, 1);
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if (cinfo->rawContent == NULL) {
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PORT_SetError(SEC_ERROR_NO_MEMORY);
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return SECFailure;
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}
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}
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return SECSuccess;
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}
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/*
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* NSS_CMSContentInfo_SetContent_XXXX - typesafe wrappers for NSS_CMSContentInfo_SetContent
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*/
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/*
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* data == NULL -> pass in data via NSS_CMSEncoder_Update
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* data != NULL -> take this data
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*/
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SECStatus
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NSS_CMSContentInfo_SetContent_Data(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, SECItem *data, PRBool detached)
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{
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if (NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_DATA, (void *)data) != SECSuccess)
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return SECFailure;
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cinfo->rawContent = (detached) ?
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NULL : (data) ?
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data : SECITEM_AllocItem(cmsg->poolp, NULL, 1);
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return SECSuccess;
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}
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SECStatus
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NSS_CMSContentInfo_SetContent_SignedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSSignedData *sigd)
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{
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return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_SIGNED_DATA, (void *)sigd);
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}
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SECStatus
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NSS_CMSContentInfo_SetContent_EnvelopedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSEnvelopedData *envd)
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{
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return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_ENVELOPED_DATA, (void *)envd);
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}
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SECStatus
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NSS_CMSContentInfo_SetContent_DigestedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSDigestedData *digd)
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{
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return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_DIGESTED_DATA, (void *)digd);
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}
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SECStatus
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NSS_CMSContentInfo_SetContent_EncryptedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSEncryptedData *encd)
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{
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return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_ENCRYPTED_DATA, (void *)encd);
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}
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/*
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* NSS_CMSContentInfo_GetContent - get pointer to inner content
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*
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* needs to be casted...
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*/
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void *
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NSS_CMSContentInfo_GetContent(NSSCMSContentInfo *cinfo)
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{
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SECOidTag tag = (cinfo && cinfo->contentTypeTag)
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? cinfo->contentTypeTag->offset
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: SEC_OID_UNKNOWN;
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switch (tag) {
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case SEC_OID_PKCS7_DATA:
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case SEC_OID_PKCS7_SIGNED_DATA:
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case SEC_OID_PKCS7_ENVELOPED_DATA:
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case SEC_OID_PKCS7_DIGESTED_DATA:
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case SEC_OID_PKCS7_ENCRYPTED_DATA:
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return cinfo->content.pointer;
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default:
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return NULL;
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}
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}
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/*
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* NSS_CMSContentInfo_GetInnerContent - get pointer to innermost content
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*
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* this is typically only called by NSS_CMSMessage_GetContent()
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*/
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SECItem *
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NSS_CMSContentInfo_GetInnerContent(NSSCMSContentInfo *cinfo)
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{
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NSSCMSContentInfo *ccinfo;
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SECOidTag tag;
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SECItem *pItem = NULL;
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tag = NSS_CMSContentInfo_GetContentTypeTag(cinfo);
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switch (tag) {
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case SEC_OID_PKCS7_DATA:
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/* end of recursion - every message has to have a data cinfo */
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pItem = cinfo->content.data;
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break;
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case SEC_OID_PKCS7_DIGESTED_DATA:
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case SEC_OID_PKCS7_ENCRYPTED_DATA:
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case SEC_OID_PKCS7_ENVELOPED_DATA:
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case SEC_OID_PKCS7_SIGNED_DATA:
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ccinfo = NSS_CMSContentInfo_GetChildContentInfo(cinfo);
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if (ccinfo != NULL)
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pItem = NSS_CMSContentInfo_GetContent(ccinfo);
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break;
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default:
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PORT_Assert(0);
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break;
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}
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return pItem;
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}
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/*
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* NSS_CMSContentInfo_GetContentType{Tag,OID} - find out (saving pointer to lookup result
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* for future reference) and return the inner content type.
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*/
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SECOidTag
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NSS_CMSContentInfo_GetContentTypeTag(NSSCMSContentInfo *cinfo)
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{
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if (cinfo->contentTypeTag == NULL)
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cinfo->contentTypeTag = SECOID_FindOID(&(cinfo->contentType));
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if (cinfo->contentTypeTag == NULL)
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return SEC_OID_UNKNOWN;
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return cinfo->contentTypeTag->offset;
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}
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SECItem *
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NSS_CMSContentInfo_GetContentTypeOID(NSSCMSContentInfo *cinfo)
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{
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if (cinfo->contentTypeTag == NULL)
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cinfo->contentTypeTag = SECOID_FindOID(&(cinfo->contentType));
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if (cinfo->contentTypeTag == NULL)
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return NULL;
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return &(cinfo->contentTypeTag->oid);
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}
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/*
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* NSS_CMSContentInfo_GetContentEncAlgTag - find out (saving pointer to lookup result
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* for future reference) and return the content encryption algorithm tag.
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*/
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SECOidTag
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NSS_CMSContentInfo_GetContentEncAlgTag(NSSCMSContentInfo *cinfo)
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{
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if (cinfo->contentEncAlgTag == SEC_OID_UNKNOWN)
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cinfo->contentEncAlgTag = SECOID_GetAlgorithmTag(&(cinfo->contentEncAlg));
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return cinfo->contentEncAlgTag;
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}
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/*
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* NSS_CMSContentInfo_GetContentEncAlg - find out and return the content encryption algorithm tag.
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*/
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SECAlgorithmID *
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NSS_CMSContentInfo_GetContentEncAlg(NSSCMSContentInfo *cinfo)
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{
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return &(cinfo->contentEncAlg);
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}
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SECStatus
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NSS_CMSContentInfo_SetContentEncAlg(PLArenaPool *poolp, NSSCMSContentInfo *cinfo,
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SECOidTag bulkalgtag, SECItem *parameters, int keysize)
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{
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SECStatus rv;
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rv = SECOID_SetAlgorithmID(poolp, &(cinfo->contentEncAlg), bulkalgtag, parameters);
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if (rv != SECSuccess)
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return SECFailure;
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cinfo->keysize = keysize;
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return SECSuccess;
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}
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SECStatus
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NSS_CMSContentInfo_SetContentEncAlgID(PLArenaPool *poolp, NSSCMSContentInfo *cinfo,
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SECAlgorithmID *algid, int keysize)
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{
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SECStatus rv;
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rv = SECOID_CopyAlgorithmID(poolp, &(cinfo->contentEncAlg), algid);
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if (rv != SECSuccess)
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return SECFailure;
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if (keysize >= 0)
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cinfo->keysize = keysize;
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return SECSuccess;
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}
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void
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NSS_CMSContentInfo_SetBulkKey(NSSCMSContentInfo *cinfo, PK11SymKey *bulkkey)
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{
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cinfo->bulkkey = PK11_ReferenceSymKey(bulkkey);
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cinfo->keysize = PK11_GetKeyStrength(cinfo->bulkkey, &(cinfo->contentEncAlg));
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}
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PK11SymKey *
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NSS_CMSContentInfo_GetBulkKey(NSSCMSContentInfo *cinfo)
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{
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if (cinfo->bulkkey == NULL)
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return NULL;
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return PK11_ReferenceSymKey(cinfo->bulkkey);
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}
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int
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NSS_CMSContentInfo_GetBulkKeySize(NSSCMSContentInfo *cinfo)
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{
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return cinfo->keysize;
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}
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