andre@0: /* This Source Code Form is subject to the terms of the Mozilla Public
andre@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
andre@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
andre@0: 
andre@0: #include "secoid.h"
andre@0: #include "secder.h"	/* XXX remove this when remove the DERTemplate */
andre@0: #include "secasn1.h"
andre@0: #include "secitem.h"
andre@0: #include "secerr.h"
andre@0: 
andre@0: SECOidTag
andre@0: SECOID_GetAlgorithmTag(const SECAlgorithmID *id)
andre@0: {
andre@0:     if (id == NULL || id->algorithm.data == NULL)
andre@0: 	return SEC_OID_UNKNOWN;
andre@0: 
andre@0:     return SECOID_FindOIDTag (&(id->algorithm));
andre@0: }
andre@0: 
andre@0: SECStatus
andre@0: SECOID_SetAlgorithmID(PLArenaPool *arena, SECAlgorithmID *id, SECOidTag which,
andre@0: 		      SECItem *params)
andre@0: {
andre@0:     SECOidData *oiddata;
andre@0:     PRBool add_null_param;
andre@0: 
andre@0:     oiddata = SECOID_FindOIDByTag(which);
andre@0:     if ( !oiddata ) {
andre@0: 	PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
andre@0: 	return SECFailure;
andre@0:     }
andre@0: 
andre@0:     if (SECITEM_CopyItem(arena, &id->algorithm, &oiddata->oid))
andre@0: 	return SECFailure;
andre@0: 
andre@0:     switch (which) {
andre@0:       case SEC_OID_MD2:
andre@0:       case SEC_OID_MD4:
andre@0:       case SEC_OID_MD5:
andre@0:       case SEC_OID_SHA1:
andre@0:       case SEC_OID_SHA224:
andre@0:       case SEC_OID_SHA256:
andre@0:       case SEC_OID_SHA384:
andre@0:       case SEC_OID_SHA512:
andre@0:       case SEC_OID_PKCS1_RSA_ENCRYPTION:
andre@0:       case SEC_OID_PKCS1_MD2_WITH_RSA_ENCRYPTION:
andre@0:       case SEC_OID_PKCS1_MD4_WITH_RSA_ENCRYPTION:
andre@0:       case SEC_OID_PKCS1_MD5_WITH_RSA_ENCRYPTION:
andre@0:       case SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION:
andre@0:       case SEC_OID_PKCS1_SHA224_WITH_RSA_ENCRYPTION:
andre@0:       case SEC_OID_PKCS1_SHA256_WITH_RSA_ENCRYPTION:
andre@0:       case SEC_OID_PKCS1_SHA384_WITH_RSA_ENCRYPTION:
andre@0:       case SEC_OID_PKCS1_SHA512_WITH_RSA_ENCRYPTION:
andre@0: 	add_null_param = PR_TRUE;
andre@0: 	break;
andre@0:       default:
andre@0: 	add_null_param = PR_FALSE;
andre@0: 	break;
andre@0:     }
andre@0: 
andre@0:     if (params) {
andre@0: 	/*
andre@0: 	 * I am specifically *not* enforcing the following assertion
andre@0: 	 * (by following it up with an error and a return of failure)
andre@0: 	 * because I do not want to introduce any change in the current
andre@0: 	 * behavior.  But I do want for us to notice if the following is
andre@0: 	 * ever true, because I do not think it should be so and probably
andre@0: 	 * signifies an error/bug somewhere.
andre@0: 	 */
andre@0: 	PORT_Assert(!add_null_param || (params->len == 2
andre@0: 					&& params->data[0] == SEC_ASN1_NULL
andre@0: 					&& params->data[1] == 0)); 
andre@0: 	if (SECITEM_CopyItem(arena, &id->parameters, params)) {
andre@0: 	    return SECFailure;
andre@0: 	}
andre@0:     } else {
andre@0: 	/*
andre@0: 	 * Again, this is not considered an error.  But if we assume
andre@0: 	 * that nobody tries to set the parameters field themselves
andre@0: 	 * (but always uses this routine to do that), then we should
andre@0: 	 * not hit the following assertion.  Unless they forgot to zero
andre@0: 	 * the structure, which could also be a bad (and wrong) thing.
andre@0: 	 */
andre@0: 	PORT_Assert(id->parameters.data == NULL);
andre@0: 
andre@0: 	if (add_null_param) {
andre@0: 	    (void) SECITEM_AllocItem(arena, &id->parameters, 2);
andre@0: 	    if (id->parameters.data == NULL) {
andre@0: 		return SECFailure;
andre@0: 	    }
andre@0: 	    id->parameters.data[0] = SEC_ASN1_NULL;
andre@0: 	    id->parameters.data[1] = 0;
andre@0: 	}
andre@0:     }
andre@0: 
andre@0:     return SECSuccess;
andre@0: }
andre@0: 
andre@0: SECStatus
andre@0: SECOID_CopyAlgorithmID(PLArenaPool *arena, SECAlgorithmID *to,
andre@0:                        const SECAlgorithmID *from)
andre@0: {
andre@0:     SECStatus rv;
andre@0: 
andre@0:     rv = SECITEM_CopyItem(arena, &to->algorithm, &from->algorithm);
andre@0:     if (rv) return rv;
andre@0:     rv = SECITEM_CopyItem(arena, &to->parameters, &from->parameters);
andre@0:     return rv;
andre@0: }
andre@0: 
andre@0: void SECOID_DestroyAlgorithmID(SECAlgorithmID *algid, PRBool freeit)
andre@0: {
andre@0:     SECITEM_FreeItem(&algid->parameters, PR_FALSE);
andre@0:     SECITEM_FreeItem(&algid->algorithm, PR_FALSE);
andre@0:     if(freeit == PR_TRUE)
andre@0:         PORT_Free(algid);
andre@0: }
andre@0: 
andre@0: SECComparison
andre@0: SECOID_CompareAlgorithmID(SECAlgorithmID *a, SECAlgorithmID *b)
andre@0: {
andre@0:     SECComparison rv;
andre@0: 
andre@0:     rv = SECITEM_CompareItem(&a->algorithm, &b->algorithm);
andre@0:     if (rv) return rv;
andre@0:     rv = SECITEM_CompareItem(&a->parameters, &b->parameters);
andre@0:     return rv;
andre@0: }