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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "ScryptParameters.h"
#include <stdlib.h>
#include <string.h>
bool parse_scrypt_parameters(const char* paramstr, int *Nf, int *rf, int *pf) {
int params[3];
char *token;
char *saveptr;
int i;
/*
* The token we're looking for should be three integers separated by
* colons (e.g., "12:8:1"). Scan the property to make sure it matches.
*/
for (i = 0, token = strtok_r(const_cast<char *>(paramstr), ":", &saveptr);
token != nullptr && i < 3;
i++, token = strtok_r(nullptr, ":", &saveptr)) {
char *endptr;
params[i] = strtol(token, &endptr, 10);
/*
* Check that there was a valid number and it's 8-bit.
*/
if ((*token == '\0') || (*endptr != '\0') || params[i] < 0 || params[i] > 255) {
return false;
}
}
if (token != nullptr) {
return false;
}
*Nf = params[0]; *rf = params[1]; *pf = params[2];
return true;
}
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