1 //* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6 #include "nsCRT.h"
7 #include "nsIFile.h"
8 #include "nsISupportsImpl.h"
9 #include "nsCheckSummedOutputStream.h"
10
11 ////////////////////////////////////////////////////////////////////////////////
12 // nsCheckSummedOutputStream
13
NS_IMPL_ISUPPORTS_INHERITED(nsCheckSummedOutputStream,nsBufferedOutputStream,nsISafeOutputStream)14 NS_IMPL_ISUPPORTS_INHERITED(nsCheckSummedOutputStream, nsBufferedOutputStream,
15 nsISafeOutputStream)
16
17 NS_IMETHODIMP
18 nsCheckSummedOutputStream::Init(nsIOutputStream *stream, uint32_t bufferSize) {
19 nsresult rv;
20 mHash = do_CreateInstance(NS_CRYPTO_HASH_CONTRACTID, &rv);
21 NS_ENSURE_SUCCESS(rv, rv);
22
23 rv = mHash->Init(nsICryptoHash::MD5);
24 NS_ENSURE_SUCCESS(rv, rv);
25
26 return nsBufferedOutputStream::Init(stream, bufferSize);
27 }
28
29 NS_IMETHODIMP
Finish()30 nsCheckSummedOutputStream::Finish() {
31 nsresult rv = mHash->Finish(false, mCheckSum);
32 NS_ENSURE_SUCCESS(rv, rv);
33
34 uint32_t written;
35 rv = nsBufferedOutputStream::Write(
36 reinterpret_cast<const char *>(mCheckSum.BeginReading()),
37 mCheckSum.Length(), &written);
38 NS_ASSERTION(written == mCheckSum.Length(), "Error writing stream checksum");
39 NS_ENSURE_SUCCESS(rv, rv);
40
41 return nsBufferedOutputStream::Finish();
42 }
43
44 NS_IMETHODIMP
Write(const char * buf,uint32_t count,uint32_t * result)45 nsCheckSummedOutputStream::Write(const char *buf, uint32_t count,
46 uint32_t *result) {
47 nsresult rv = mHash->Update(reinterpret_cast<const uint8_t *>(buf), count);
48 NS_ENSURE_SUCCESS(rv, rv);
49
50 return nsBufferedOutputStream::Write(buf, count, result);
51 }
52
53 ////////////////////////////////////////////////////////////////////////////////
54