am 3383df38: Merge change 6198 into donut

/*

**

** Copyright 2009, 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.

*/

#ifndef __KEYSTORE_GET_H__

#define __KEYSTORE_GET_H__

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "certtool.h"

/* This function is provided to native components to get values from keystore.

 * Users are required to link against libcutils. If something goes wrong, NULL

 * is returned. Otherwise it returns the value in dynamically allocated memory

 * and sets the size if the pointer is not NULL. One can release the memory by

 * calling free(). */

static char *keystore_get(char *key, int *size)

{

    char buffer[MAX_KEY_VALUE_LENGTH];

    char *value;

    int length;

    if (get_cert(key, (unsigned char *)buffer, &length) != 0) {

        return NULL;

    }

    value = malloc(length + 1);

    if (!value) {

        return NULL;

    }

    memcpy(value, buffer, length);

    value[length] = 0;

    if (size) {

        *size = length;

    }

    return value;

}

#endif