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https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
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3bfb163a74
config.h should be included from every .c file, and it should be included before any other include. Fix that. (As a side effect of how I did this, this also changes us to consistently use "config.h" rather than <config.h>. To the extent that it matters [which is not much], quotes are more correct anyway, since we're talking about a file in our own build tree, not a system include.)
105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Copyright (C) 2010 Red Hat, Inc.
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*
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*/
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#include "config.h"
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#include <arpa/inet.h>
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#include <string.h>
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#include "nm-dns-utils.h"
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#include "nm-platform.h"
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#include "nm-utils.h"
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static void
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add_ip4_to_rdns_array (guint32 ip, GPtrArray *domains) /* network byte order */
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{
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guint32 defprefix;
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guchar *p;
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char *str = NULL;
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int i;
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defprefix = nm_utils_ip4_get_default_prefix (ip);
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/* Convert to host byte order, mask the host bits, and convert back */
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ip = ntohl (ip);
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ip &= 0xFFFFFFFF << (32 - defprefix);
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ip = htonl (ip);
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p = (guchar *) &ip;
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if (defprefix == 8)
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str = g_strdup_printf ("%u.in-addr.arpa", p[0] & 0xFF);
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else if (defprefix == 16)
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str = g_strdup_printf ("%u.%u.in-addr.arpa", p[1] & 0xFF, p[0] & 0xFF);
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else if (defprefix == 24)
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str = g_strdup_printf ("%u.%u.%u.in-addr.arpa", p[2] & 0xFF, p[1] & 0xFF, p[0] & 0xFF);
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if (!str) {
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g_return_if_fail (str != NULL);
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return;
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}
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/* Suppress duplicates */
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for (i = 0; i < domains->len; i++) {
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if (strcmp (str, g_ptr_array_index (domains, i)) == 0)
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break;
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}
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if (i == domains->len)
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g_ptr_array_add (domains, str);
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else
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g_free (str);
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}
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char **
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nm_dns_utils_get_ip4_rdns_domains (NMIP4Config *ip4)
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{
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GPtrArray *domains = NULL;
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int i;
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g_return_val_if_fail (ip4 != NULL, NULL);
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domains = g_ptr_array_sized_new (5);
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/* To calculate the reverse DNS domains for this IP4 config, we take
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* all the IP addresses and routes in the config, calculate the network
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* portion, and convert that to classful, and use the network bits for
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* the final domain. FIXME: better handle classless routing, which might
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* require us to add multiple domains for each actual network prefix to
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* cover all the separate networks in that block.
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*/
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for (i = 0; i < nm_ip4_config_get_num_addresses (ip4); i++) {
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const NMPlatformIP4Address *address = nm_ip4_config_get_address (ip4, i);
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add_ip4_to_rdns_array (address->address, domains);
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}
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for (i = 0; i < nm_ip4_config_get_num_routes (ip4); i++) {
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const NMPlatformIP4Route *route = nm_ip4_config_get_route (ip4, i);
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add_ip4_to_rdns_array (route->network, domains);
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}
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/* Terminating NULL so we can use g_strfreev() to free it */
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g_ptr_array_add (domains, NULL);
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/* Free the array and return NULL if the only element was the ending NULL */
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return (char **) g_ptr_array_free (domains, (domains->len == 1));
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}
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