1/*
2 * Copyright 2012, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef BCC_SUPPORT_SHA1_UTIL_H
18#define BCC_SUPPORT_SHA1_UTIL_H
19
20#include <stdint.h>
21
22#include <cstddef>
23
24// This guard prevents system sha1.h (such as the one in bionic) has been
25// included before this header.
26#ifndef SHA1_DIGEST_LENGTH
27#define SHA1_DIGEST_LENGTH 20
28#endif
29
30namespace bcc {
31
32class Sha1Util {
33private:
34  Sha1Util(); // DISABLED.
35  Sha1Util(Sha1Util &); // DISABLED.
36
37public:
38  // Return true on success.
39  static bool GetSHA1DigestFromFile(uint8_t pResult[SHA1_DIGEST_LENGTH],
40                                    const char *pFilename);
41
42  // Return true on success.
43  static bool GetSHA1DigestFromBuffer(uint8_t pResult[SHA1_DIGEST_LENGTH],
44                                      const uint8_t *pData, size_t pSize);
45
46  // Useful function when passing buffer of type  "const char *."
47  static bool GetSHA1DigestFromBuffer(uint8_t pResult[SHA1_DIGEST_LENGTH],
48                                      const char *pData, size_t pSize) {
49    return GetSHA1DigestFromBuffer(pResult,
50                                   reinterpret_cast<const uint8_t*>(pData),
51                                   pSize);
52  }
53};
54
55} // end namespace bcc
56
57#endif // BCC_SUPPORT_SHA1_UTIL_H
58