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| author | Edwin Mons <edwin.mons@isode.com> | 2018-11-09 10:04:04 (GMT) |
|---|---|---|
| committer | Edwin Mons <edwin.mons@isode.com> | 2018-11-14 14:18:08 (GMT) |
| commit | ccad2debbf8d7322c9d2b517763d7b8e3902a828 (patch) | |
| tree | 50054ea69dcf21179920ffdde5790908e48848d8 /Swiften/FileTransfer/ByteArrayReadBytestream.cpp | |
| parent | c7ad127218e3901e0006e75aa7e1399b449a845e (diff) | |
| download | swift-ccad2debbf8d7322c9d2b517763d7b8e3902a828.zip swift-ccad2debbf8d7322c9d2b517763d7b8e3902a828.tar.bz2 | |
Address bad_numeric_casts for filetransfers
The filetransfer blockSize is now an unsigned integer, as 0 could be
used to denote an invalid block size as well (and indeed, already
indicated that better than -1 did).
All use of numeric_cast in filetransfer code has been fixed to deal with
the possibility of thrown exceptions.
Test-Information:
Unit tests pass on macOS and Debian
Change-Id: I1833d553bae071238be20ebc386ef602effb78b0
Diffstat (limited to 'Swiften/FileTransfer/ByteArrayReadBytestream.cpp')
| -rw-r--r-- | Swiften/FileTransfer/ByteArrayReadBytestream.cpp | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/Swiften/FileTransfer/ByteArrayReadBytestream.cpp b/Swiften/FileTransfer/ByteArrayReadBytestream.cpp index cd9fa4a..3fdff27 100644 --- a/Swiften/FileTransfer/ByteArrayReadBytestream.cpp +++ b/Swiften/FileTransfer/ByteArrayReadBytestream.cpp @@ -1,5 +1,5 @@ /* - * Copyright (c) 2010-2016 Isode Limited. + * Copyright (c) 2010-2018 Isode Limited. * All rights reserved. * See the COPYING file for more information. */ @@ -19,13 +19,19 @@ std::shared_ptr<ByteArray> ByteArrayReadBytestream::read(size_t size) { if (position + readSize > data.size()) { readSize = data.size() - position; } - std::shared_ptr<ByteArray> result = std::make_shared<ByteArray>( - data.begin() + boost::numeric_cast<long long>(position), - data.begin() + boost::numeric_cast<long long>(position) + boost::numeric_cast<long long>(readSize)); - - onRead(*result); - position += readSize; - return result; + try { + std::shared_ptr<ByteArray> result = std::make_shared<ByteArray>( + data.begin() + boost::numeric_cast<long long>(position), + data.begin() + boost::numeric_cast<long long>(position) + boost::numeric_cast<long long>(readSize)); + onRead(*result); + position += readSize; + return result; + } + catch (const boost::numeric::bad_numeric_cast&) { + // If we cannot cast to long long, we probably ran out of memory long ago + assert(false); + return {}; + } } void ByteArrayReadBytestream::addData(const std::vector<unsigned char>& moreData) { |