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 "ecl.h"
andre@0: #include "ecl-curve.h"
andre@0: #include "ecl-priv.h"
andre@0: #include <stdlib.h>
andre@0: #include <string.h>
andre@0: 
andre@0: #define CHECK(func) if ((func) == NULL) { res = 0; goto CLEANUP; }
andre@0: 
andre@0: /* Duplicates an ECCurveParams */
andre@0: ECCurveParams *
andre@0: ECCurveParams_dup(const ECCurveParams * params)
andre@0: {
andre@0: 	int res = 1;
andre@0: 	ECCurveParams *ret = NULL;
andre@0: 
andre@0: 	CHECK(ret = (ECCurveParams *) calloc(1, sizeof(ECCurveParams)));
andre@0: 	if (params->text != NULL) {
andre@0: 		CHECK(ret->text = strdup(params->text));
andre@0: 	}
andre@0: 	ret->field = params->field;
andre@0: 	ret->size = params->size;
andre@0: 	if (params->irr != NULL) {
andre@0: 		CHECK(ret->irr = strdup(params->irr));
andre@0: 	}
andre@0: 	if (params->curvea != NULL) {
andre@0: 		CHECK(ret->curvea = strdup(params->curvea));
andre@0: 	}
andre@0: 	if (params->curveb != NULL) {
andre@0: 		CHECK(ret->curveb = strdup(params->curveb));
andre@0: 	}
andre@0: 	if (params->genx != NULL) {
andre@0: 		CHECK(ret->genx = strdup(params->genx));
andre@0: 	}
andre@0: 	if (params->geny != NULL) {
andre@0: 		CHECK(ret->geny = strdup(params->geny));
andre@0: 	}
andre@0: 	if (params->order != NULL) {
andre@0: 		CHECK(ret->order = strdup(params->order));
andre@0: 	}
andre@0: 	ret->cofactor = params->cofactor;
andre@0: 
andre@0:   CLEANUP:
andre@0: 	if (res != 1) {
andre@0: 		EC_FreeCurveParams(ret);
andre@0: 		return NULL;
andre@0: 	}
andre@0: 	return ret;
andre@0: }
andre@0: 
andre@0: #undef CHECK
andre@0: 
andre@0: /* Construct ECCurveParams from an ECCurveName */
andre@0: ECCurveParams *
andre@0: EC_GetNamedCurveParams(const ECCurveName name)
andre@0: {
andre@0: 	if ((name <= ECCurve_noName) || (ECCurve_pastLastCurve <= name) ||
andre@0: 					(ecCurve_map[name] == NULL)) {
andre@0: 		return NULL;
andre@0: 	} else {
andre@0: 		return ECCurveParams_dup(ecCurve_map[name]);
andre@0: 	}
andre@0: }
andre@0: 
andre@0: /* Free the memory allocated (if any) to an ECCurveParams object. */
andre@0: void
andre@0: EC_FreeCurveParams(ECCurveParams * params)
andre@0: {
andre@0: 	if (params == NULL)
andre@0: 		return;
andre@0: 	if (params->text != NULL)
andre@0: 		free(params->text);
andre@0: 	if (params->irr != NULL)
andre@0: 		free(params->irr);
andre@0: 	if (params->curvea != NULL)
andre@0: 		free(params->curvea);
andre@0: 	if (params->curveb != NULL)
andre@0: 		free(params->curveb);
andre@0: 	if (params->genx != NULL)
andre@0: 		free(params->genx);
andre@0: 	if (params->geny != NULL)
andre@0: 		free(params->geny);
andre@0: 	if (params->order != NULL)
andre@0: 		free(params->order);
andre@0: 	free(params);
andre@0: }