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/* $Id$ */
/* Copyright 1998 by the Massachusetts Institute of Technology.
* Copyright (C) 2008-2010 by Daniel Stenberg
*
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting
* documentation, and that the name of M.I.T. not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is"
* without express or implied warranty.
*/
#include "ares_setup.h"
#include "ares.h"
#include "ares_data.h"
#include "ares_private.h"
int ares_get_servers(ares_channel channel,
struct ares_addr_node **servers)
{
struct ares_addr_node *srvr_head = NULL;
struct ares_addr_node *srvr_last = NULL;
struct ares_addr_node *srvr_curr;
int status = ARES_SUCCESS;
int i;
if (!channel)
return ARES_ENODATA;
for (i = 0; i < channel->nservers; i++)
{
/* Allocate storage for this server node appending it to the list */
srvr_curr = ares_malloc_data(ARES_DATATYPE_ADDR_NODE);
if (!srvr_curr)
{
status = ARES_ENOMEM;
break;
}
if (srvr_last)
{
srvr_last->next = srvr_curr;
}
else
{
srvr_head = srvr_curr;
}
srvr_last = srvr_curr;
/* Fill this server node data */
srvr_curr->family = channel->servers[i].addr.family;
if (srvr_curr->family == AF_INET)
memcpy(&srvr_curr->addrV4, &channel->servers[i].addr.addrV4,
sizeof(srvr_curr->addrV4));
else
memcpy(&srvr_curr->addrV6, &channel->servers[i].addr.addrV6,
sizeof(srvr_curr->addrV6));
}
if (status != ARES_SUCCESS)
{
if (srvr_head)
{
ares_free_data(srvr_head);
srvr_head = NULL;
}
}
*servers = srvr_head;
return status;
}
int ares_set_servers(ares_channel channel,
struct ares_addr_node *servers)
{
struct ares_addr_node *srvr;
int num_srvrs = 0;
int i;
if (ares_library_initialized() != ARES_SUCCESS)
return ARES_ENOTINITIALIZED;
if (!channel)
return ARES_ENODATA;
ares__destroy_servers_state(channel);
for (srvr = servers; srvr; srvr = srvr->next)
{
num_srvrs++;
}
if (num_srvrs > 0)
{
/* Allocate storage for servers state */
channel->servers = malloc(num_srvrs * sizeof(struct server_state));
if (!channel->servers)
{
return ARES_ENOMEM;
}
channel->nservers = num_srvrs;
/* Fill servers state address data */
for (i = 0, srvr = servers; srvr; i++, srvr = srvr->next)
{
channel->servers[i].addr.family = srvr->family;
if (srvr->family == AF_INET)
memcpy(&channel->servers[i].addr.addrV4, &srvr->addrV4,
sizeof(srvr->addrV4));
else
memcpy(&channel->servers[i].addr.addrV6, &srvr->addrV6,
sizeof(srvr->addrV6));
}
/* Initialize servers state remaining data */
ares__init_servers_state(channel);
}
return ARES_SUCCESS;
}
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