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Check for truncation when converting buffer size from size_t to openssl's

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int argument.
This commit is contained in:
chris_kohlhoff 2008-01-14 11:40:52 +00:00
parent 2be103d536
commit 97e452dec4
1 changed files with 23 additions and 4 deletions
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27
asio/include/asio/ssl/detail/openssl_stream_service.hpp
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@ -20,6 +20,7 @@
#include "asio/detail/push_options.hpp"
#include <cstddef>
#include <climits>
#include <boost/config.hpp>
#include <boost/noncopyable.hpp>
#include <boost/function.hpp>
@ -42,6 +43,8 @@ class openssl_stream_service
: public asio::detail::service_base<openssl_stream_service>
{
private:
enum { max_buffer_size = INT_MAX };
//Base handler for asyncrhonous operations
template <typename Stream>
class base_handler
@ -324,10 +327,14 @@ public:
size_t bytes_transferred = 0;
try
{
std::size_t buffer_size = asio::buffer_size(*buffers.begin());
if (buffer_size > max_buffer_size)
buffer_size = max_buffer_size;
boost::function<int (SSL*)> send_func =
boost::bind(&::SSL_write, boost::arg<1>(),
asio::buffer_cast<const void*>(*buffers.begin()),
static_cast<int>(asio::buffer_size(*buffers.begin())));
static_cast<int>(buffer_size));
openssl_operation<Stream> op(
send_func,
next_layer,
@ -356,10 +363,14 @@ public:
send_handler* local_handler = new send_handler(handler, get_io_service());
std::size_t buffer_size = asio::buffer_size(*buffers.begin());
if (buffer_size > max_buffer_size)
buffer_size = max_buffer_size;
boost::function<int (SSL*)> send_func =
boost::bind(&::SSL_write, boost::arg<1>(),
asio::buffer_cast<const void*>(*buffers.begin()),
static_cast<int>(asio::buffer_size(*buffers.begin())));
static_cast<int>(buffer_size));
openssl_operation<Stream>* op = new openssl_operation<Stream>
(
@ -389,10 +400,14 @@ public:
size_t bytes_transferred = 0;
try
{
std::size_t buffer_size = asio::buffer_size(*buffers.begin());
if (buffer_size > max_buffer_size)
buffer_size = max_buffer_size;
boost::function<int (SSL*)> recv_func =
boost::bind(&::SSL_read, boost::arg<1>(),
asio::buffer_cast<void*>(*buffers.begin()),
asio::buffer_size(*buffers.begin()));
static_cast<int>(buffer_size));
openssl_operation<Stream> op(recv_func,
next_layer,
impl->recv_buf,
@ -421,10 +436,14 @@ public:
recv_handler* local_handler = new recv_handler(handler, get_io_service());
std::size_t buffer_size = asio::buffer_size(*buffers.begin());
if (buffer_size > max_buffer_size)
buffer_size = max_buffer_size;
boost::function<int (SSL*)> recv_func =
boost::bind(&::SSL_read, boost::arg<1>(),
asio::buffer_cast<void*>(*buffers.begin()),
asio::buffer_size(*buffers.begin()));
static_cast<int>(buffer_size));
openssl_operation<Stream>* op = new openssl_operation<Stream>
(