When connecting with v1, the server logs a message when I exit my login
shell:
Closing connection to 130.207.167.32
However, when connecting with v2, it only ever logs:
Connection closed by remote host.
Tracing through the code, it appears that instead of breaking in
serverloop.c:server_loop2() at:
if (had_channel && !channel_still_open()) {
debug("!channel_still_open.");
break;
}
and returning to sshd.c:main() and logging the nice message, it continues
to process_input(), gets a len==0 from the read(), and does:
verbose("Connection closed by remote host.");
fatal_cleanup();
Comparing the v1 server_loop and the v2 server_loop2, the v1 loop appears
to have significantly more checks for breaking the loop:
if (((fdout_eof && fderr_eof) ||
(child_terminated && child_has_selected)) &&
!packet_have_data_to_write() &&
(buffer_len(&stdout_buffer) == 0) &&
(buffer_len(&stderr_buffer) == 0)) {
if (!channel_still_open())
break;
as well as other useful logging information, like:
debug("End of interactive session; stdin %ld, stdout (read %ld, sent
%ld), stderr %ld bytes.",
stdin_bytes, fdout_bytes, stdout_bytes, stderr_bytes);
which aren't in the v2 server_loop2.
I'd suggest a patch here, but I don't know enough about the code nor
protocols to know how much these v1 conventions can be applied to v2.
It sure would be nice to have a v2 connection log the same information a v1
connection does, though.
--
Will Day <PGP mail preferred> OIT / O&E / Technical Support
willday at rom.oit.gatech.edu Georgia Tech, Atlanta 30332-0715
-> Opinions expressed are mine alone and do not reflect OIT policy <-
Those who would give up essential Liberty, to purchase a little temporary
Safety, deserve neither Liberty nor Safety.
Benjamin Franklin, Pennsylvania Assembly, Nov. 11, 1755
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