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fix segfault in put_data 

If less than three nodes are found to put an item to then traversal_algorithm::start
will add router nodes. This leads to a crash in put_data::invoke when it tries to
read a token from uninitialized memory in a null_observer.
This commit is contained in:
Steven Siloti 2015-11-22 15:56:27 -08:00
parent adb70a8dc3
commit 9f7aa7f3a6
2 changed files with 9 additions and 0 deletions
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1
include/libtorrent/kademlia/put_data.hpp
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@ -58,6 +58,7 @@ struct put_data: traversal_algorithm
put_data(node& node, put_callback const& callback);
virtual char const* name() const;
virtual void start();
void set_data(item const& data) { m_data = data; }

8
src/kademlia/put_data.cpp
View File

@ -47,6 +47,14 @@ put_data::put_data(node& dht_node, put_callback const& callback)
char const* put_data::name() const { return "put_data"; }
void put_data::start()
{
// router nodes must not be added to puts
init();
bool is_done = add_requests();
if (is_done) done();
}
void put_data::set_targets(std::vector<std::pair<node_entry, std::string> > const& targets)
{
for (std::vector<std::pair<node_entry, std::string> >::const_iterator i = targets.begin()