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/*
* run_tlsdate.c - events for running tlsdate
* Copyright (c) 2013 The Chromium Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "config.h"
#include <event2/event.h>
#include "src/conf.h"
#include "src/dbus.h"
#include "src/util.h"
#include "src/tlsdate.h"
/* TODO(wad) split out backoff logic to make this testable */
void action_run_tlsdate (evutil_socket_t fd, short what, void *arg)
{
struct state *state = arg;
debug ("[event:%s] fired", __func__);
if (state->last_sync_type == SYNC_TYPE_NET)
{
info ("[event:%s] called, but network time isn't needed");
return;
}
state->resolving = 0;
if (state->running)
{
/* It's possible that a network or proxy change occurred during a call. If
* the call succeeded, it doesn't matter. If the call fails, reissuing
* the attempt with the new configuration has a chance of succeeding. To
* avoid missing a retry, we decrement the try count and reset the
* backoff.
*/
if (state->tries > 0)
{
state->tries--;
/* TODO(wad) Make a shorter retry constant for this. */
state->backoff = state->opts.wait_between_tries;
}
info ("[event:%s] requested re-run of tlsdate while tlsdate is running",
__func__);
return;
}
/* Enforce maximum retries here instead of in sigchld.c */
if (state->tries < state->opts.max_tries)
{
state->tries++;
}
else
{
state->tries = 0;
state->backoff = state->opts.wait_between_tries;
error ("[event:%s] tlsdate tried and failed to get the time", __func__);
return;
}
state->running = 1;
info ("[event:%s] attempt %d backoff %d", __func__,
state->tries, state->backoff);
/* Setup a timeout before killing tlsdate */
trigger_event (state, E_TLSDATE_TIMEOUT,
state->opts.subprocess_wait_between_tries);
/* Add the response listener event */
trigger_event (state, E_TLSDATE_STATUS, -1);
/* Fire off the child process now! */
if (tlsdate (state))
{
/* TODO(wad) Should this be fatal? */
error ("[event:%s] tlsdate failed to launch!", __func__);
state->running = 0;
state->tries = 0;
event_del (state->events[E_TLSDATE_TIMEOUT]);
return;
}
}
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