void ssh_packet_wrapper_send_encode_va(SshPacketWrapper down,
SshPacketType type,
va_list va)
{
/* Format the packet in a separate buffer. */
ssh_buffer_clear(&down->outgoing_packet);
ssh_packet_encode_va(&down->outgoing_packet, type, va);
/* Check that we don't overflow maximum buffer size. Drop the packet
if we would. */
if (ssh_buffer_len(&down->outgoing) +
ssh_buffer_len(&down->outgoing_packet) >= BUFFER_MAX_SIZE)
{
ssh_debug("ssh_packet_wrapper_send_encode_va: flow control problems; "
"outgoing packet dropped.");
return;
}
/* Append the packet to the outgoing buffer. */
ssh_buffer_append(&down->outgoing, ssh_buffer_ptr(&down->outgoing_packet),
ssh_buffer_len(&down->outgoing_packet));
/* Reset the callback to ensure that our callback gets called. */
ssh_stream_set_callback(down->stream, ssh_packet_wrapper_callback,
(void *)down);
}
size_t ssh_packet_encode(SshBuffer *buffer, SshPacketType type, ...)
{
va_list ap;
va_start(ap, type);
return ssh_packet_encode_va(buffer, type, ap);
}
void ssh_packet_impl_send_encode_va(SshStream up_stream,
SshPacketType type,
va_list va)
{
SshPacketImpl up;
/* Verify that it is a SshPacketImpl stream. */
if (ssh_stream_get_methods(up_stream) != &ssh_packet_impl_methods)
ssh_fatal("ssh_packet_impl_can_receive: not a SshPacketImpl stream");
/* Get the internal context. */
up = (SshPacketImpl)ssh_stream_get_context(up_stream);
/* Format the packet in a separate buffer. */
ssh_buffer_clear(&up->outgoing_packet);
ssh_packet_encode_va(&up->outgoing_packet, type, va);
/* Check that we don't overflow maximum buffer size. Drop the
packet if we would. */
if (ssh_buffer_len(&up->outgoing) + ssh_buffer_len(&up->outgoing_packet) >=
BUFFER_MAX_SIZE)
{
ssh_debug("ssh_packet_impl_send_encode_va: "
"flow control problems; outgoing packet dropped.");
return;
}
/* Append the packet to the outgoing buffer. */
if (ssh_buffer_append(&up->outgoing,
ssh_buffer_ptr(&up->outgoing_packet),
ssh_buffer_len(&up->outgoing_packet)) != SSH_BUFFER_OK)
{
return;
}
/* Restart reads by upper level. */
ssh_packet_impl_restart_input(up);
/* Sanity check that we didn't exceed max buffer size. */
if (ssh_buffer_len(&up->outgoing) > BUFFER_MAX_SIZE)
ssh_debug("ssh_packet_impl_send: buffer max size exceeded: size %ld",
(long)ssh_buffer_len(&up->outgoing));
}