cmscinfo.c
上传用户:lyxiangda
上传日期:2007-01-12
资源大小:3042k
文件大小:9k
- /*
- * 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 Netscape are
- * Copyright (C) 1994-2000 Netscape Communications Corporation. All
- * Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL"), in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your
- * version of this file only under the terms of the GPL and not to
- * allow others to use your version of this file under the MPL,
- * indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient
- * may use your version of this file under either the MPL or the
- * GPL.
- */
- /*
- * CMS contentInfo methods.
- *
- * $Id: cmscinfo.c,v 1.2 2000/06/13 21:56:27 chrisk%netscape.com Exp $
- */
- #include "cmslocal.h"
- #include "pk11func.h"
- #include "secitem.h"
- #include "secoid.h"
- #include "secerr.h"
- /*
- * NSS_CMSContentInfo_Create - create a content info
- *
- * version is set in the _Finalize procedures for each content type
- */
- /*
- * NSS_CMSContentInfo_Destroy - destroy a CMS contentInfo and all of its sub-pieces.
- */
- void
- NSS_CMSContentInfo_Destroy(NSSCMSContentInfo *cinfo)
- {
- SECOidTag kind;
- kind = NSS_CMSContentInfo_GetContentTypeTag(cinfo);
- switch (kind) {
- case SEC_OID_PKCS7_ENVELOPED_DATA:
- NSS_CMSEnvelopedData_Destroy(cinfo->content.envelopedData);
- break;
- case SEC_OID_PKCS7_SIGNED_DATA:
- NSS_CMSSignedData_Destroy(cinfo->content.signedData);
- break;
- case SEC_OID_PKCS7_ENCRYPTED_DATA:
- NSS_CMSEncryptedData_Destroy(cinfo->content.encryptedData);
- break;
- case SEC_OID_PKCS7_DIGESTED_DATA:
- NSS_CMSDigestedData_Destroy(cinfo->content.digestedData);
- break;
- default:
- /* XXX Anything else that needs to be "manually" freed/destroyed? */
- break;
- }
- if (cinfo->bulkkey)
- PK11_FreeSymKey(cinfo->bulkkey);
-
- /* we live in a pool, so no need to worry about storage */
- }
- /*
- * NSS_CMSContentInfo_GetChildContentInfo - get content's contentInfo (if it exists)
- */
- NSSCMSContentInfo *
- NSS_CMSContentInfo_GetChildContentInfo(NSSCMSContentInfo *cinfo)
- {
- switch (NSS_CMSContentInfo_GetContentTypeTag(cinfo)) {
- case SEC_OID_PKCS7_DATA:
- return NULL;
- case SEC_OID_PKCS7_SIGNED_DATA:
- return &(cinfo->content.signedData->contentInfo);
- case SEC_OID_PKCS7_ENVELOPED_DATA:
- return &(cinfo->content.envelopedData->contentInfo);
- case SEC_OID_PKCS7_DIGESTED_DATA:
- return &(cinfo->content.digestedData->contentInfo);
- case SEC_OID_PKCS7_ENCRYPTED_DATA:
- return &(cinfo->content.encryptedData->contentInfo);
- default:
- return NULL;
- }
- }
- /*
- * NSS_CMSContentInfo_SetContent - set content type & content
- */
- SECStatus
- NSS_CMSContentInfo_SetContent(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, SECOidTag type, void *ptr)
- {
- SECStatus rv;
- cinfo->contentTypeTag = SECOID_FindOIDByTag(type);
- if (cinfo->contentTypeTag == NULL)
- return SECFailure;
-
- /* do not copy the oid, just create a reference */
- rv = SECITEM_CopyItem (cmsg->poolp, &(cinfo->contentType), &(cinfo->contentTypeTag->oid));
- if (rv != SECSuccess)
- return SECFailure;
- cinfo->content.pointer = ptr;
- if (type != SEC_OID_PKCS7_DATA) {
- /* as we always have some inner data,
- * we need to set it to something, just to fool the encoder enough to work on it
- * and get us into nss_cms_encoder_notify at that point */
- cinfo->rawContent = SECITEM_AllocItem(cmsg->poolp, NULL, 1);
- if (cinfo->rawContent == NULL) {
- PORT_SetError(SEC_ERROR_NO_MEMORY);
- return SECFailure;
- }
- }
- return SECSuccess;
- }
- /*
- * NSS_CMSContentInfo_SetContent_XXXX - typesafe wrappers for NSS_CMSContentInfo_SetContent
- */
- /*
- * data == NULL -> pass in data via NSS_CMSEncoder_Update
- * data != NULL -> take this data
- */
- SECStatus
- NSS_CMSContentInfo_SetContent_Data(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, SECItem *data, PRBool detached)
- {
- if (NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_DATA, (void *)data) != SECSuccess)
- return SECFailure;
- cinfo->rawContent = (detached) ?
- NULL : (data) ?
- data : SECITEM_AllocItem(cmsg->poolp, NULL, 1);
- return SECSuccess;
- }
- SECStatus
- NSS_CMSContentInfo_SetContent_SignedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSSignedData *sigd)
- {
- return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_SIGNED_DATA, (void *)sigd);
- }
- SECStatus
- NSS_CMSContentInfo_SetContent_EnvelopedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSEnvelopedData *envd)
- {
- return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_ENVELOPED_DATA, (void *)envd);
- }
- SECStatus
- NSS_CMSContentInfo_SetContent_DigestedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSDigestedData *digd)
- {
- return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_DIGESTED_DATA, (void *)digd);
- }
- SECStatus
- NSS_CMSContentInfo_SetContent_EncryptedData(NSSCMSMessage *cmsg, NSSCMSContentInfo *cinfo, NSSCMSEncryptedData *encd)
- {
- return NSS_CMSContentInfo_SetContent(cmsg, cinfo, SEC_OID_PKCS7_ENCRYPTED_DATA, (void *)encd);
- }
- /*
- * NSS_CMSContentInfo_GetContent - get pointer to inner content
- *
- * needs to be casted...
- */
- void *
- NSS_CMSContentInfo_GetContent(NSSCMSContentInfo *cinfo)
- {
- switch (cinfo->contentTypeTag->offset) {
- case SEC_OID_PKCS7_DATA:
- case SEC_OID_PKCS7_SIGNED_DATA:
- case SEC_OID_PKCS7_ENVELOPED_DATA:
- case SEC_OID_PKCS7_DIGESTED_DATA:
- case SEC_OID_PKCS7_ENCRYPTED_DATA:
- return cinfo->content.pointer;
- default:
- return NULL;
- }
- }
- /*
- * NSS_CMSContentInfo_GetInnerContent - get pointer to innermost content
- *
- * this is typically only called by NSS_CMSMessage_GetContent()
- */
- SECItem *
- NSS_CMSContentInfo_GetInnerContent(NSSCMSContentInfo *cinfo)
- {
- NSSCMSContentInfo *ccinfo;
- switch (NSS_CMSContentInfo_GetContentTypeTag(cinfo)) {
- case SEC_OID_PKCS7_DATA:
- return cinfo->content.data; /* end of recursion - every message has to have a data cinfo */
- case SEC_OID_PKCS7_DIGESTED_DATA:
- case SEC_OID_PKCS7_ENCRYPTED_DATA:
- case SEC_OID_PKCS7_ENVELOPED_DATA:
- case SEC_OID_PKCS7_SIGNED_DATA:
- if ((ccinfo = NSS_CMSContentInfo_GetChildContentInfo(cinfo)) == NULL)
- break;
- return NSS_CMSContentInfo_GetContent(ccinfo);
- default:
- PORT_Assert(0);
- break;
- }
- return NULL;
- }
- /*
- * NSS_CMSContentInfo_GetContentType{Tag,OID} - find out (saving pointer to lookup result
- * for future reference) and return the inner content type.
- */
- SECOidTag
- NSS_CMSContentInfo_GetContentTypeTag(NSSCMSContentInfo *cinfo)
- {
- if (cinfo->contentTypeTag == NULL)
- cinfo->contentTypeTag = SECOID_FindOID(&(cinfo->contentType));
- if (cinfo->contentTypeTag == NULL)
- return SEC_OID_UNKNOWN;
- return cinfo->contentTypeTag->offset;
- }
- SECItem *
- NSS_CMSContentInfo_GetContentTypeOID(NSSCMSContentInfo *cinfo)
- {
- if (cinfo->contentTypeTag == NULL)
- cinfo->contentTypeTag = SECOID_FindOID(&(cinfo->contentType));
- if (cinfo->contentTypeTag == NULL)
- return NULL;
- return &(cinfo->contentTypeTag->oid);
- }
- /*
- * NSS_CMSContentInfo_GetContentEncAlgTag - find out (saving pointer to lookup result
- * for future reference) and return the content encryption algorithm tag.
- */
- SECOidTag
- NSS_CMSContentInfo_GetContentEncAlgTag(NSSCMSContentInfo *cinfo)
- {
- if (cinfo->contentEncAlgTag == SEC_OID_UNKNOWN)
- cinfo->contentEncAlgTag = SECOID_GetAlgorithmTag(&(cinfo->contentEncAlg));
- return cinfo->contentEncAlgTag;
- }
- /*
- * NSS_CMSContentInfo_GetContentEncAlg - find out and return the content encryption algorithm tag.
- */
- SECAlgorithmID *
- NSS_CMSContentInfo_GetContentEncAlg(NSSCMSContentInfo *cinfo)
- {
- return &(cinfo->contentEncAlg);
- }
- SECStatus
- NSS_CMSContentInfo_SetContentEncAlg(PLArenaPool *poolp, NSSCMSContentInfo *cinfo,
- SECOidTag bulkalgtag, SECItem *parameters, int keysize)
- {
- SECStatus rv;
- rv = SECOID_SetAlgorithmID(poolp, &(cinfo->contentEncAlg), bulkalgtag, parameters);
- if (rv != SECSuccess)
- return SECFailure;
- cinfo->keysize = keysize;
- return SECSuccess;
- }
- SECStatus
- NSS_CMSContentInfo_SetContentEncAlgID(PLArenaPool *poolp, NSSCMSContentInfo *cinfo,
- SECAlgorithmID *algid, int keysize)
- {
- SECStatus rv;
- rv = SECOID_CopyAlgorithmID(poolp, &(cinfo->contentEncAlg), algid);
- if (rv != SECSuccess)
- return SECFailure;
- if (keysize >= 0)
- cinfo->keysize = keysize;
- return SECSuccess;
- }
- void
- NSS_CMSContentInfo_SetBulkKey(NSSCMSContentInfo *cinfo, PK11SymKey *bulkkey)
- {
- cinfo->bulkkey = PK11_ReferenceSymKey(bulkkey);
- cinfo->keysize = PK11_GetKeyStrength(cinfo->bulkkey, &(cinfo->contentEncAlg));
- }
- PK11SymKey *
- NSS_CMSContentInfo_GetBulkKey(NSSCMSContentInfo *cinfo)
- {
- if (cinfo->bulkkey == NULL)
- return NULL;
- return PK11_ReferenceSymKey(cinfo->bulkkey);
- }
- int
- NSS_CMSContentInfo_GetBulkKeySize(NSSCMSContentInfo *cinfo)
- {
- return cinfo->keysize;
- }