/security/nss/lib/smime/cmsudf.c
http://github.com/zpao/v8monkey · C · 480 lines · 342 code · 55 blank · 83 comment · 66 complexity · 44f38f8edcc61133abc98fbdb54c3764 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 User Define Types
- *
- * $Id: cmsudf.c,v 1.3 2011/02/11 01:53:17 emaldona%redhat.com Exp $
- */
- #include "cmslocal.h"
- #include "prinit.h"
- #include "pk11func.h"
- #include "secitem.h"
- #include "secoid.h"
- #include "secerr.h"
- #include "nss.h"
- typedef struct nsscmstypeInfoStr nsscmstypeInfo;
- struct nsscmstypeInfoStr {
- SECOidTag type;
- SEC_ASN1Template *template;
- size_t size;
- PRBool isData;
- NSSCMSGenericWrapperDataDestroy destroy;
- NSSCMSGenericWrapperDataCallback decode_before;
- NSSCMSGenericWrapperDataCallback decode_after;
- NSSCMSGenericWrapperDataCallback decode_end;
- NSSCMSGenericWrapperDataCallback encode_start;
- NSSCMSGenericWrapperDataCallback encode_before;
- NSSCMSGenericWrapperDataCallback encode_after;
- };
- /* make sure the global tables are only initialized once */
- static PRCallOnceType nsscmstypeOnce;
- static PRCallOnceType nsscmstypeClearOnce;
- /* lock for adding a new entry */
- static PRLock *nsscmstypeAddLock;
- /* lock for the hash table */
- static PRLock *nsscmstypeHashLock;
- /* the hash table itself */
- static PLHashTable *nsscmstypeHash;
- /* arena to hold all the hash table data */
- static PRArenaPool *nsscmstypeArena;
- /*
- * clean up our global tables
- */
- SECStatus
- nss_cmstype_shutdown(void *appData, void *reserved)
- {
- if (nsscmstypeHashLock) {
- PR_Lock(nsscmstypeHashLock);
- }
- if (nsscmstypeHash) {
- PL_HashTableDestroy(nsscmstypeHash);
- nsscmstypeHash = NULL;
- }
- if (nsscmstypeArena) {
- PORT_FreeArena(nsscmstypeArena, PR_FALSE);
- nsscmstypeArena = NULL;
- }
- if (nsscmstypeAddLock) {
- PR_DestroyLock(nsscmstypeAddLock);
- }
- if (nsscmstypeHashLock) {
- PRLock *oldLock = nsscmstypeHashLock;
- nsscmstypeHashLock = NULL;
- PR_Unlock(oldLock);
- PR_DestroyLock(oldLock);
- }
- /* don't clear out the PR_ONCE data if we failed our inital call */
- if (appData == NULL) {
- nsscmstypeOnce = nsscmstypeClearOnce;
- }
- return SECSuccess;
- }
- static PLHashNumber
- nss_cmstype_hash_key(const void *key)
- {
- return (PLHashNumber) key;
- }
- static PRIntn
- nss_cmstype_compare_keys(const void *v1, const void *v2)
- {
- PLHashNumber value1 = (PLHashNumber) v1;
- PLHashNumber value2 = (PLHashNumber) v2;
- return (value1 == value2);
- }
- /*
- * initialize our hash tables, called once on the first attemat to register
- * a new SMIME type.
- */
- static PRStatus
- nss_cmstype_init(void)
- {
- SECStatus rv;
-
- nsscmstypeHashLock = PR_NewLock();
- if (nsscmstypeHashLock == NULL) {
- return PR_FAILURE;
- }
- nsscmstypeAddLock = PR_NewLock();
- if (nsscmstypeHashLock == NULL) {
- goto fail;
- }
- nsscmstypeHash = PL_NewHashTable(64, nss_cmstype_hash_key,
- nss_cmstype_compare_keys, PL_CompareValues, NULL, NULL);
- if (nsscmstypeHash == NULL) {
- goto fail;
- }
- nsscmstypeArena = PORT_NewArena(2048);
- if (nsscmstypeArena == NULL) {
- goto fail;
- }
- rv = NSS_RegisterShutdown(nss_cmstype_shutdown, NULL);
- if (rv != SECSuccess) {
- goto fail;
- }
- return PR_SUCCESS;
- fail:
- nss_cmstype_shutdown(&nsscmstypeOnce, NULL);
- return PR_FAILURE;
- }
-
- /*
- * look up and registered SIME type
- */
- static const nsscmstypeInfo *
- nss_cmstype_lookup(SECOidTag type)
- {
- nsscmstypeInfo *typeInfo = NULL;;
- if (!nsscmstypeHash) {
- return NULL;
- }
- PR_Lock(nsscmstypeHashLock);
- if (nsscmstypeHash) {
- typeInfo = PL_HashTableLookupConst(nsscmstypeHash, (void *)type);
- }
- PR_Unlock(nsscmstypeHashLock);
- return typeInfo;
- }
- /*
- * add a new type to the SMIME type table
- */
- static SECStatus
- nss_cmstype_add(SECOidTag type, nsscmstypeInfo *typeinfo)
- {
- PLHashEntry *entry;
- if (!nsscmstypeHash) {
- /* assert? this shouldn't happen */
- return SECFailure;
- }
- PR_Lock(nsscmstypeHashLock);
- /* this is really paranoia. If we really are racing nsscmstypeHash, we'll
- * also be racing nsscmstypeHashLock... */
- if (!nsscmstypeHash) {
- PR_Unlock(nsscmstypeHashLock);
- return SECFailure;
- }
- entry = PL_HashTableAdd(nsscmstypeHash, (void *)type, typeinfo);
- PR_Unlock(nsscmstypeHashLock);
- return entry ? SECSuccess : SECFailure;
- }
- /* helper functions to manage new content types
- */
- PRBool
- NSS_CMSType_IsWrapper(SECOidTag type)
- {
- const nsscmstypeInfo *typeInfo = NULL;
- switch (type) {
- 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 PR_TRUE;
- default:
- typeInfo = nss_cmstype_lookup(type);
- if (typeInfo && !typeInfo->isData) {
- return PR_TRUE;
- }
- }
- return PR_FALSE;
- }
- PRBool
- NSS_CMSType_IsData(SECOidTag type)
- {
- const nsscmstypeInfo *typeInfo = NULL;
- switch (type) {
- case SEC_OID_PKCS7_DATA:
- return PR_TRUE;
- default:
- typeInfo = nss_cmstype_lookup(type);
- if (typeInfo && typeInfo->isData) {
- return PR_TRUE;
- }
- }
- return PR_FALSE;
- }
- const SEC_ASN1Template *
- NSS_CMSType_GetTemplate(SECOidTag type)
- {
- const nsscmstypeInfo *typeInfo = nss_cmstype_lookup(type);
- if (typeInfo && typeInfo->template) {
- return typeInfo->template;
- }
- return SEC_ASN1_GET(SEC_PointerToOctetStringTemplate);
- }
- size_t
- NSS_CMSType_GetContentSize(SECOidTag type)
- {
- const nsscmstypeInfo *typeInfo = nss_cmstype_lookup(type);
- if (typeInfo) {
- return typeInfo->size;
- }
- return sizeof(SECItem *);
- }
- void
- NSS_CMSGenericWrapperData_Destroy(SECOidTag type, NSSCMSGenericWrapperData *gd)
- {
- const nsscmstypeInfo *typeInfo = nss_cmstype_lookup(type);
- if (typeInfo && typeInfo->destroy) {
- (*typeInfo->destroy)(gd);
- }
-
- }
- SECStatus
- NSS_CMSGenericWrapperData_Decode_BeforeData(SECOidTag type,
- NSSCMSGenericWrapperData *gd)
- {
- const nsscmstypeInfo *typeInfo;
- /* short cut common case */
- if (type == SEC_OID_PKCS7_DATA) {
- return SECSuccess;
- }
- typeInfo = nss_cmstype_lookup(type);
- if (typeInfo) {
- if (typeInfo->decode_before) {
- return (*typeInfo->decode_before)(gd);
- }
- /* decoder ops optional for data tags */
- if (typeInfo->isData) {
- return SECSuccess;
- }
- }
- /* expected a function, but none existed */
- return SECFailure;
-
- }
- SECStatus
- NSS_CMSGenericWrapperData_Decode_AfterData(SECOidTag type,
- NSSCMSGenericWrapperData *gd)
- {
- const nsscmstypeInfo *typeInfo;
- /* short cut common case */
- if (type == SEC_OID_PKCS7_DATA) {
- return SECSuccess;
- }
- typeInfo = nss_cmstype_lookup(type);
- if (typeInfo) {
- if (typeInfo->decode_after) {
- return (*typeInfo->decode_after)(gd);
- }
- /* decoder ops optional for data tags */
- if (typeInfo->isData) {
- return SECSuccess;
- }
- }
- /* expected a function, but none existed */
- return SECFailure;
- }
- SECStatus
- NSS_CMSGenericWrapperData_Decode_AfterEnd(SECOidTag type,
- NSSCMSGenericWrapperData *gd)
- {
- const nsscmstypeInfo *typeInfo;
- /* short cut common case */
- if (type == SEC_OID_PKCS7_DATA) {
- return SECSuccess;
- }
- typeInfo = nss_cmstype_lookup(type);
- if (typeInfo) {
- if (typeInfo->decode_end) {
- return (*typeInfo->decode_end)(gd);
- }
- /* decoder ops optional for data tags */
- if (typeInfo->isData) {
- return SECSuccess;
- }
- }
- /* expected a function, but none existed */
- return SECFailure;
- }
- SECStatus
- NSS_CMSGenericWrapperData_Encode_BeforeStart(SECOidTag type,
- NSSCMSGenericWrapperData *gd)
- {
- const nsscmstypeInfo *typeInfo;
- /* short cut common case */
- if (type == SEC_OID_PKCS7_DATA) {
- return SECSuccess;
- }
- typeInfo = nss_cmstype_lookup(type);
- if (typeInfo) {
- if (typeInfo->encode_start) {
- return (*typeInfo->encode_start)(gd);
- }
- /* decoder ops optional for data tags */
- if (typeInfo->isData) {
- return SECSuccess;
- }
- }
- /* expected a function, but none existed */
- return SECFailure;
- }
- SECStatus
- NSS_CMSGenericWrapperData_Encode_BeforeData(SECOidTag type,
- NSSCMSGenericWrapperData *gd)
- {
- const nsscmstypeInfo *typeInfo;
- /* short cut common case */
- if (type == SEC_OID_PKCS7_DATA) {
- return SECSuccess;
- }
- typeInfo = nss_cmstype_lookup(type);
- if (typeInfo) {
- if (typeInfo->encode_before) {
- return (*typeInfo->encode_before)(gd);
- }
- /* decoder ops optional for data tags */
- if (typeInfo->isData) {
- return SECSuccess;
- }
- }
- /* expected a function, but none existed */
- return SECFailure;
- }
- SECStatus
- NSS_CMSGenericWrapperData_Encode_AfterData(SECOidTag type,
- NSSCMSGenericWrapperData *gd)
- {
- const nsscmstypeInfo *typeInfo;
- /* short cut common case */
- if (type == SEC_OID_PKCS7_DATA) {
- return SECSuccess;
- }
- typeInfo = nss_cmstype_lookup(type);
- if (typeInfo) {
- if (typeInfo->encode_after) {
- return (*typeInfo->encode_after)(gd);
- }
- /* decoder ops optional for data tags */
- if (typeInfo->isData) {
- return SECSuccess;
- }
- }
- /* expected a function, but none existed */
- return SECFailure;
- }
- SECStatus
- NSS_CMSType_RegisterContentType(SECOidTag type,
- SEC_ASN1Template *asn1Template, size_t size,
- NSSCMSGenericWrapperDataDestroy destroy,
- NSSCMSGenericWrapperDataCallback decode_before,
- NSSCMSGenericWrapperDataCallback decode_after,
- NSSCMSGenericWrapperDataCallback decode_end,
- NSSCMSGenericWrapperDataCallback encode_start,
- NSSCMSGenericWrapperDataCallback encode_before,
- NSSCMSGenericWrapperDataCallback encode_after,
- PRBool isData)
- {
- PRStatus rc;
- SECStatus rv;
- nsscmstypeInfo *typeInfo;
- const nsscmstypeInfo *exists;
- rc = PR_CallOnce( &nsscmstypeOnce, nss_cmstype_init);
- if (rc == PR_FAILURE) {
- return SECFailure;
- }
- PR_Lock(nsscmstypeAddLock);
- exists = nss_cmstype_lookup(type);
- if (exists) {
- PR_Unlock(nsscmstypeAddLock);
- /* already added */
- return SECSuccess;
- }
- typeInfo = PORT_ArenaNew(nsscmstypeArena, nsscmstypeInfo);
- typeInfo->type = type;
- typeInfo->size = size;
- typeInfo->isData = isData;
- typeInfo->template = asn1Template;
- typeInfo->destroy = destroy;
- typeInfo->decode_before = decode_before;
- typeInfo->decode_after = decode_after;
- typeInfo->decode_end = decode_end;
- typeInfo->encode_start = encode_start;
- typeInfo->encode_before = encode_before;
- typeInfo->encode_after = encode_after;
- rv = nss_cmstype_add(type, typeInfo);
- PR_Unlock(nsscmstypeAddLock);
- return rv;
- }