50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "ScryptParameters.h"
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#include <stdlib.h>
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#include <string.h>
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bool parse_scrypt_parameters(const char* paramstr, int *Nf, int *rf, int *pf) {
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int params[3];
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char *token;
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char *saveptr;
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int i;
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/*
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* The token we're looking for should be three integers separated by
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* colons (e.g., "12:8:1"). Scan the property to make sure it matches.
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*/
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for (i = 0, token = strtok_r(const_cast<char *>(paramstr), ":", &saveptr);
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token != nullptr && i < 3;
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i++, token = strtok_r(nullptr, ":", &saveptr)) {
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char *endptr;
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params[i] = strtol(token, &endptr, 10);
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/*
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* Check that there was a valid number and it's 8-bit.
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*/
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if ((*token == '\0') || (*endptr != '\0') || params[i] < 0 || params[i] > 255) {
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return false;
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}
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}
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if (token != nullptr) {
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return false;
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}
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*Nf = params[0]; *rf = params[1]; *pf = params[2];
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return true;
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}
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