static void connect_event(int unused_event, void *context)
{
int sock = CAST_ANY_PTR_TO_INT(context);
struct sockaddr_storage ss;
SOCKADDR_SIZE len = sizeof(ss);
struct sockaddr *sa = (struct sockaddr *) &ss;
SINK_STATE *state;
int fd;
if ((fd = accept(sock, sa, &len)) >= 0) {
if (msg_verbose)
msg_info("connect (%s)",
#ifdef AF_LOCAL
sa->sa_family == AF_LOCAL ? "AF_LOCAL" :
#else
sa->sa_family == AF_UNIX ? "AF_UNIX" :
#endif
sa->sa_family == AF_INET ? "AF_INET" :
#ifdef AF_INET6
sa->sa_family == AF_INET6 ? "AF_INET6" :
#endif
"unknown protocol family");
non_blocking(fd, NON_BLOCKING);
state = (SINK_STATE *) mymalloc(sizeof(*state));
state->stream = vstream_fdopen(fd, O_RDWR);
vstream_tweak_sock(state->stream);
netstring_setup(state->stream, var_tmout);
event_enable_read(fd, read_length, (void *) state);
}
}
static SMTP_SESSION *smtp_reuse_common(SMTP_STATE *state, int fd,
const char *label)
{
const char *myname = "smtp_reuse_common";
SMTP_ITERATOR *iter = state->iterator;
SMTP_SESSION *session;
/*
* Can't happen. Both smtp_reuse_nexthop() and smtp_reuse_addr() decline
* the request when the TLS policy is not TLS_LEV_NONE.
*/
#ifdef USE_TLS
if (state->tls->level > TLS_LEV_NONE)
msg_panic("%s: unexpected plain-text cached session to %s",
myname, label);
#endif
/*
* Re-activate the SMTP_SESSION object.
*/
session = smtp_session_activate(fd, state->iterator, state->dest_prop,
state->endp_prop);
if (session == 0) {
msg_warn("%s: bad cached session attribute for %s", myname, label);
(void) close(fd);
return (0);
}
state->session = session;
session->state = state;
#ifdef USE_TLS
session->tls = state->tls; /* TEMPORARY */
#endif
/*
* Send an RSET probe to verify that the session is still good.
*/
if (smtp_rset(state) < 0
|| (session->features & SMTP_FEATURE_RSET_REJECTED) != 0) {
smtp_session_free(session);
return (state->session = 0);
}
/*
* Avoid poor performance when TCP MSS > VSTREAM_BUFSIZE.
*/
vstream_tweak_sock(session->stream);
/*
* Update the list of used cached addresses.
*/
htable_enter(state->cache_used, STR(iter->addr), (char *) 0);
return (session);
}