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/* cloning an subnet list, for libreswan
*
* Copyright (C) 2024 Andrew Cagney
*
* 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. See <https://www.gnu.org/licenses/gpl2.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include <stdarg.h>
#include "lswalloc.h"
#include "passert.h"
#include "lswlog.h" /* for dbg() */
#include "ip_subnet.h"
#include "ip_info.h"
static err_t parse_subnets(shunk_t token, const struct ip_info *afi,
void **ptr, unsigned len)
{
ip_subnet tmp_token;
ip_address nonzero_host;
err_t e = ttosubnet_num(token, afi, &tmp_token, &nonzero_host);
if (e != NULL) {
return e;
}
if (nonzero_host.is_set) {
return "subnet has non-zero address identifier";
}
/* save it */
ip_subnet *subnets = (*ptr);
realloc_things(subnets, len, len+1, "subnets");
subnets[len] = tmp_token;
(*ptr) = subnets;
return NULL;
}
diag_t ttosubnets_num(shunk_t input, const struct ip_info *afi, ip_subnets *output)
{
zero(output);
void *ptr = NULL;
unsigned len = 0;
diag_t d = ttoips_num(input, afi, &ptr, &len, parse_subnets);
if (d != NULL) {
return d;
}
output->list = ptr;
output->len = len;
return NULL;
}
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