1/*
2**
3** Copyright 2009, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18#ifndef __KEYSTORE_GET_H__
19#define __KEYSTORE_GET_H__
20
21#include <stdio.h>
22#include <stdlib.h>
23#include <string.h>
24
25#include "certtool.h"
26
27/* This function is provided to native components to get values from keystore.
28 * Users are required to link against libcutils. If something goes wrong, NULL
29 * is returned. Otherwise it returns the value in dynamically allocated memory
30 * and sets the size if the pointer is not NULL. One can release the memory by
31 * calling free(). */
32static char *keystore_get(const char *key, int *size)
33{
34    char buffer[MAX_KEY_VALUE_LENGTH];
35    char *value;
36    int length;
37
38    if (get_cert(key, (unsigned char *)buffer, &length) != 0) {
39        return NULL;
40    }
41    value = malloc(length + 1);
42    if (!value) {
43        return NULL;
44    }
45    memcpy(value, buffer, length);
46    value[length] = 0;
47    if (size) {
48        *size = length;
49    }
50    return value;
51}
52
53#endif
54