/*

 * Mailer management.

 *

 * Copyright 2015 Horms Solutions Ltd, Simon Horman <horms@verge.net.au>

 * Copyright 2020 Willy Tarreau <w@1wt.eu>

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version

 * 2 of the License, or (at your option) any later version.

 *

 */

#include <stdlib.h>

#include <haproxy/action-t.h>

#include <haproxy/api.h>

#include <haproxy/errors.h>

#include <haproxy/mailers.h>

#include <haproxy/proxy.h>

#include <haproxy/server-t.h>

#include <haproxy/task.h>

#include <haproxy/time.h>

#include <haproxy/tools.h>

int mailers_used_from_lua = 0;

struct mailers *mailers = NULL;

/* Initializes mailer alerts for the proxy <p> using <mls> parameters.

 *

 * The function returns 1 in success case, otherwise, it returns 0 and err is

 * filled.

 */

int init_email_alert(struct mailers *mls, struct proxy *p, char **err)

{

  mls->users++;

  free(p->email_alert.mailers.name);

  p->email_alert.mailers.m = mls;

  p->email_alert.flags |= PR_EMAIL_ALERT_RESOLVED;

  return 0;

}

void free_email_alert(struct proxy *p)

{

  if (!(p->email_alert.flags & PR_EMAIL_ALERT_RESOLVED))

    ha_free(&p->email_alert.mailers.name);

  ha_free(&p->email_alert.from);

  ha_free(&p->email_alert.to);

  ha_free(&p->email_alert.myhostname);

}

static int mailers_post_check(void)

{

  struct mailers *cur;

  for (cur = mailers; cur != NULL; cur = cur->next) {

    if (cur->users && !mailers_used_from_lua) {

      ha_warning("mailers '%s' is referenced on at least one proxy but Lua "

                 "mailers are not configured so the setting will be ignored. "

                 "Use 'examples/lua/mailers.lua' file for basic mailers support.\n", cur->id);

      return ERR_WARN;

    }

  }

  return ERR_NONE;

}

REGISTER_POST_CHECK(mailers_post_check);