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fix crash when creating torrents and optimizing file order with pad files

This commit is contained in:
Arvid Norberg 2012-08-12 19:16:20 +00:00
parent a84c5e0e85
commit 1f32bdab5a
2 changed files with 21 additions and 1 deletions
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1
ChangeLog
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@ -1,6 +1,7 @@
* fix uTP edge case where udp socket buffer fills up
* fix nagle implementation in uTP
* fix crash when creating torrents and optimizing file order with pad files
* disable support for large MTUs in uTP until it is more reliable
* expose post_torrent_updates and state_update_alert to python bindings
* fix incorrect SSL error messages

21
src/file_storage.cpp
View File

@ -490,31 +490,40 @@ namespace libtorrent
void file_storage::reorder_file(int index, int dst)
{
TORRENT_ASSERT(index < int(m_files.size()));
TORRENT_ASSERT(dst < int(m_files.size()));
TORRENT_ASSERT(dst < index);
internal_file_entry e = m_files[index];
m_files.erase(m_files.begin() + index);
m_files.insert(m_files.begin() + dst, e);
if (!m_mtime.empty())
{
TORRENT_ASSERT(m_mtime.size() == m_files.size());
time_t mtime = 0;
if (int(m_mtime.size()) > index)
{
mtime = m_mtime[index];
m_mtime.erase(m_mtime.begin() + index);
}
if (dst > int(m_mtime.size())) m_mtime.resize(dst, 0);
m_mtime.insert(m_mtime.begin() + dst, mtime);
}
if (!m_file_hashes.empty())
{
TORRENT_ASSERT(m_file_hashes.size() == m_files.size());
char const* fh = 0;
if (int(m_file_hashes.size()) > index)
{
fh = m_file_hashes[index];
m_file_hashes.erase(m_file_hashes.begin() + index);
}
if (int(m_file_hashes.size()) < dst) m_file_hashes.resize(dst, NULL);
m_file_hashes.insert(m_file_hashes.begin() + dst, fh);
}
if (!m_file_base.empty())
{
TORRENT_ASSERT(m_file_base.size() == m_files.size());
size_type base = 0;
if (int(m_file_base.size()) > index)
{
@ -589,7 +598,6 @@ namespace libtorrent
int cur_index = file_index(*i);
reorder_file(index, cur_index);
i = m_files.begin() + cur_index;
i->offset = off;
off += i->size;
continue;
@ -601,6 +609,7 @@ namespace libtorrent
// new pad file. Once we're done adding it, we need
// to increment i to point to the current file again
internal_file_entry e;
int cur_index = file_index(*i);
i = m_files.insert(i, e);
i->size = pad_size;
i->offset = off;
@ -611,6 +620,16 @@ namespace libtorrent
i->pad_file = true;
off += pad_size;
++padding_file;
if (int(m_mtime.size()) > cur_index)
m_mtime.insert(m_mtime.begin() + cur_index, 0);
if (int(m_file_hashes.size()) > cur_index)
m_file_hashes.insert(m_file_hashes.begin() + cur_index, NULL);
if (int(m_file_base.size()) > cur_index)
m_file_base.insert(m_file_base.begin() + cur_index, 0);
// skip the pad file we just added and point
// at the current file again
++i;